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
63 #ifndef _NETINET6_IN6_VAR_H_
64 #define _NETINET6_IN6_VAR_H_
65
66 #include <sys/tree.h>
67 #include <sys/counter.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 */
89 struct 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
96 #ifdef _KERNEL
97
98 SLIST_HEAD(in6_multi_head, in6_multi);
99 MALLOC_DECLARE(M_IP6MADDR);
100
101 struct in6_ifaddr {
102 struct ifaddr ia_ifa; /* protocol-independent info */
103 #define ia_ifp ia_ifa.ifa_ifp
104 #define ia_flags ia_ifa.ifa_flags
105 struct sockaddr_in6 ia_addr; /* interface address */
106 struct sockaddr_in6 ia_net; /* network number of interface */
107 struct sockaddr_in6 ia_dstaddr; /* space for destination addr */
108 struct sockaddr_in6 ia_prefixmask; /* prefix mask */
109 u_int32_t ia_plen; /* prefix length */
110 CK_STAILQ_ENTRY(in6_ifaddr) ia_link; /* list of IPv6 addresses */
111 int ia6_flags;
112
113 struct in6_addrlifetime ia6_lifetime;
114 time_t ia6_createtime; /* the creation time of this address, which is
115 * currently used for temporary addresses only.
116 */
117 time_t ia6_updatetime;
118
119 /* back pointer to the ND prefix (for autoconfigured addresses only) */
120 struct nd_prefix *ia6_ndpr;
121
122 /* multicast addresses joined from the kernel */
123 LIST_HEAD(, in6_multi_mship) ia6_memberships;
124 /* entry in bucket of inet6 addresses */
125 CK_LIST_ENTRY(in6_ifaddr) ia6_hash;
126 };
127
128 /* List of in6_ifaddr's. */
129 CK_STAILQ_HEAD(in6_ifaddrhead, in6_ifaddr);
130 CK_LIST_HEAD(in6_ifaddrlisthead, in6_ifaddr);
131 #endif /* _KERNEL */
132
133 /* control structure to manage address selection policy */
134 struct in6_addrpolicy {
135 struct sockaddr_in6 addr; /* prefix address */
136 struct sockaddr_in6 addrmask; /* prefix mask */
137 int preced; /* precedence */
138 int label; /* matching label */
139 u_quad_t use; /* statistics */
140 };
141
142 /*
143 * IPv6 interface statistics, as defined in RFC2465 Ipv6IfStatsEntry (p12).
144 */
145 struct in6_ifstat {
146 uint64_t ifs6_in_receive; /* # of total input datagram */
147 uint64_t ifs6_in_hdrerr; /* # of datagrams with invalid hdr */
148 uint64_t ifs6_in_toobig; /* # of datagrams exceeded MTU */
149 uint64_t ifs6_in_noroute; /* # of datagrams with no route */
150 uint64_t ifs6_in_addrerr; /* # of datagrams with invalid dst */
151 uint64_t ifs6_in_protounknown; /* # of datagrams with unknown proto */
152 /* NOTE: increment on final dst if */
153 uint64_t ifs6_in_truncated; /* # of truncated datagrams */
154 uint64_t ifs6_in_discard; /* # of discarded datagrams */
155 /* NOTE: fragment timeout is not here */
156 uint64_t ifs6_in_deliver; /* # of datagrams delivered to ULP */
157 /* NOTE: increment on final dst if */
158 uint64_t ifs6_out_forward; /* # of datagrams forwarded */
159 /* NOTE: increment on outgoing if */
160 uint64_t ifs6_out_request; /* # of outgoing datagrams from ULP */
161 /* NOTE: does not include forwrads */
162 uint64_t ifs6_out_discard; /* # of discarded datagrams */
163 uint64_t ifs6_out_fragok; /* # of datagrams fragmented */
164 uint64_t ifs6_out_fragfail; /* # of datagrams failed on fragment */
165 uint64_t ifs6_out_fragcreat; /* # of fragment datagrams */
166 /* NOTE: this is # after fragment */
167 uint64_t ifs6_reass_reqd; /* # of incoming fragmented packets */
168 /* NOTE: increment on final dst if */
169 uint64_t ifs6_reass_ok; /* # of reassembled packets */
170 /* NOTE: this is # after reass */
171 /* NOTE: increment on final dst if */
172 uint64_t ifs6_reass_fail; /* # of reass failures */
173 /* NOTE: may not be packet count */
174 /* NOTE: increment on final dst if */
175 uint64_t ifs6_in_mcast; /* # of inbound multicast datagrams */
176 uint64_t ifs6_out_mcast; /* # of outbound multicast datagrams */
177 };
178
179 /*
180 * ICMPv6 interface statistics, as defined in RFC2466 Ipv6IfIcmpEntry.
181 * XXX: I'm not sure if this file is the right place for this structure...
182 */
183 struct icmp6_ifstat {
184 /*
185 * Input statistics
186 */
187 /* ipv6IfIcmpInMsgs, total # of input messages */
188 uint64_t ifs6_in_msg;
189 /* ipv6IfIcmpInErrors, # of input error messages */
190 uint64_t ifs6_in_error;
191 /* ipv6IfIcmpInDestUnreachs, # of input dest unreach errors */
192 uint64_t ifs6_in_dstunreach;
193 /* ipv6IfIcmpInAdminProhibs, # of input administratively prohibited errs */
194 uint64_t ifs6_in_adminprohib;
195 /* ipv6IfIcmpInTimeExcds, # of input time exceeded errors */
196 uint64_t ifs6_in_timeexceed;
197 /* ipv6IfIcmpInParmProblems, # of input parameter problem errors */
198 uint64_t ifs6_in_paramprob;
199 /* ipv6IfIcmpInPktTooBigs, # of input packet too big errors */
200 uint64_t ifs6_in_pkttoobig;
201 /* ipv6IfIcmpInEchos, # of input echo requests */
202 uint64_t ifs6_in_echo;
203 /* ipv6IfIcmpInEchoReplies, # of input echo replies */
204 uint64_t ifs6_in_echoreply;
205 /* ipv6IfIcmpInRouterSolicits, # of input router solicitations */
206 uint64_t ifs6_in_routersolicit;
207 /* ipv6IfIcmpInRouterAdvertisements, # of input router advertisements */
208 uint64_t ifs6_in_routeradvert;
209 /* ipv6IfIcmpInNeighborSolicits, # of input neighbor solicitations */
210 uint64_t ifs6_in_neighborsolicit;
211 /* ipv6IfIcmpInNeighborAdvertisements, # of input neighbor advertisements */
212 uint64_t ifs6_in_neighboradvert;
213 /* ipv6IfIcmpInRedirects, # of input redirects */
214 uint64_t ifs6_in_redirect;
215 /* ipv6IfIcmpInGroupMembQueries, # of input MLD queries */
216 uint64_t ifs6_in_mldquery;
217 /* ipv6IfIcmpInGroupMembResponses, # of input MLD reports */
218 uint64_t ifs6_in_mldreport;
219 /* ipv6IfIcmpInGroupMembReductions, # of input MLD done */
220 uint64_t ifs6_in_mlddone;
221
222 /*
223 * Output statistics. We should solve unresolved routing problem...
224 */
225 /* ipv6IfIcmpOutMsgs, total # of output messages */
226 uint64_t ifs6_out_msg;
227 /* ipv6IfIcmpOutErrors, # of output error messages */
228 uint64_t ifs6_out_error;
229 /* ipv6IfIcmpOutDestUnreachs, # of output dest unreach errors */
230 uint64_t ifs6_out_dstunreach;
231 /* ipv6IfIcmpOutAdminProhibs, # of output administratively prohibited errs */
232 uint64_t ifs6_out_adminprohib;
233 /* ipv6IfIcmpOutTimeExcds, # of output time exceeded errors */
234 uint64_t ifs6_out_timeexceed;
235 /* ipv6IfIcmpOutParmProblems, # of output parameter problem errors */
236 uint64_t ifs6_out_paramprob;
237 /* ipv6IfIcmpOutPktTooBigs, # of output packet too big errors */
238 uint64_t ifs6_out_pkttoobig;
239 /* ipv6IfIcmpOutEchos, # of output echo requests */
240 uint64_t ifs6_out_echo;
241 /* ipv6IfIcmpOutEchoReplies, # of output echo replies */
242 uint64_t ifs6_out_echoreply;
243 /* ipv6IfIcmpOutRouterSolicits, # of output router solicitations */
244 uint64_t ifs6_out_routersolicit;
245 /* ipv6IfIcmpOutRouterAdvertisements, # of output router advertisements */
246 uint64_t ifs6_out_routeradvert;
247 /* ipv6IfIcmpOutNeighborSolicits, # of output neighbor solicitations */
248 uint64_t ifs6_out_neighborsolicit;
249 /* ipv6IfIcmpOutNeighborAdvertisements, # of output neighbor advertisements */
250 uint64_t ifs6_out_neighboradvert;
251 /* ipv6IfIcmpOutRedirects, # of output redirects */
252 uint64_t ifs6_out_redirect;
253 /* ipv6IfIcmpOutGroupMembQueries, # of output MLD queries */
254 uint64_t ifs6_out_mldquery;
255 /* ipv6IfIcmpOutGroupMembResponses, # of output MLD reports */
256 uint64_t ifs6_out_mldreport;
257 /* ipv6IfIcmpOutGroupMembReductions, # of output MLD done */
258 uint64_t ifs6_out_mlddone;
259 };
260
261 struct in6_ifreq {
262 char ifr_name[IFNAMSIZ];
263 union {
264 struct sockaddr_in6 ifru_addr;
265 struct sockaddr_in6 ifru_dstaddr;
266 int ifru_flags;
267 int ifru_flags6;
268 int ifru_metric;
269 caddr_t ifru_data;
270 struct in6_addrlifetime ifru_lifetime;
271 struct in6_ifstat ifru_stat;
272 struct icmp6_ifstat ifru_icmp6stat;
273 u_int32_t ifru_scope_id[16];
274 } ifr_ifru;
275 };
276
277 struct in6_aliasreq {
278 char ifra_name[IFNAMSIZ];
279 struct sockaddr_in6 ifra_addr;
280 struct sockaddr_in6 ifra_dstaddr;
281 struct sockaddr_in6 ifra_prefixmask;
282 int ifra_flags;
283 struct in6_addrlifetime ifra_lifetime;
284 int ifra_vhid;
285 };
286
287 /* pre-10.x compat */
288 struct oin6_aliasreq {
289 char ifra_name[IFNAMSIZ];
290 struct sockaddr_in6 ifra_addr;
291 struct sockaddr_in6 ifra_dstaddr;
292 struct sockaddr_in6 ifra_prefixmask;
293 int ifra_flags;
294 struct in6_addrlifetime ifra_lifetime;
295 };
296
297 /* prefix type macro */
298 #define IN6_PREFIX_ND 1
299 #define IN6_PREFIX_RR 2
300
301 /*
302 * prefix related flags passed between kernel(NDP related part) and
303 * user land command(ifconfig) and daemon(rtadvd).
304 */
305 struct in6_prflags {
306 struct prf_ra {
307 u_char onlink : 1;
308 u_char autonomous : 1;
309 u_char router : 1;
310 u_char dhcp6_pd : 1;
311 u_char reserved : 4;
312 } prf_ra;
313 u_char prf_reserved1;
314 u_short prf_reserved2;
315 /* want to put this on 4byte offset */
316 struct prf_rr {
317 u_char decrvalid : 1;
318 u_char decrprefd : 1;
319 u_char reserved : 6;
320 } prf_rr;
321 u_char prf_reserved3;
322 u_short prf_reserved4;
323 };
324
325 struct in6_prefixreq {
326 char ipr_name[IFNAMSIZ];
327 u_char ipr_origin;
328 u_char ipr_plen;
329 u_int32_t ipr_vltime;
330 u_int32_t ipr_pltime;
331 struct in6_prflags ipr_flags;
332 struct sockaddr_in6 ipr_prefix;
333 };
334
335 #define PR_ORIG_RA 0
336 #define PR_ORIG_RR 1
337 #define PR_ORIG_STATIC 2
338 #define PR_ORIG_KERNEL 3
339
340 #define ipr_raf_onlink ipr_flags.prf_ra.onlink
341 #define ipr_raf_auto ipr_flags.prf_ra.autonomous
342 #define ipr_raf_router ipr_flags.prf_ra.router
343 #define ipr_raf_dhcp6pd ipr_flags.prf_ra.dhcp6_pd
344
345 #define ipr_statef_onlink ipr_flags.prf_state.onlink
346
347 #define ipr_rrf_decrvalid ipr_flags.prf_rr.decrvalid
348 #define ipr_rrf_decrprefd ipr_flags.prf_rr.decrprefd
349
350 struct in6_rrenumreq {
351 char irr_name[IFNAMSIZ];
352 u_char irr_origin;
353 u_char irr_m_len; /* match len for matchprefix */
354 u_char irr_m_minlen; /* minlen for matching prefix */
355 u_char irr_m_maxlen; /* maxlen for matching prefix */
356 u_char irr_u_uselen; /* uselen for adding prefix */
357 u_char irr_u_keeplen; /* keeplen from matching prefix */
358 struct irr_raflagmask {
359 u_char onlink : 1;
360 u_char autonomous : 1;
361 u_char reserved : 6;
362 } irr_raflagmask;
363 u_int32_t irr_vltime;
364 u_int32_t irr_pltime;
365 struct in6_prflags irr_flags;
366 struct sockaddr_in6 irr_matchprefix;
367 struct sockaddr_in6 irr_useprefix;
368 };
369
370 #define irr_raf_mask_onlink irr_raflagmask.onlink
371 #define irr_raf_mask_auto irr_raflagmask.autonomous
372 #define irr_raf_mask_reserved irr_raflagmask.reserved
373
374 #define irr_raf_onlink irr_flags.prf_ra.onlink
375 #define irr_raf_auto irr_flags.prf_ra.autonomous
376
377 #define irr_statef_onlink irr_flags.prf_state.onlink
378
379 #define irr_rrf irr_flags.prf_rr
380 #define irr_rrf_decrvalid irr_flags.prf_rr.decrvalid
381 #define irr_rrf_decrprefd irr_flags.prf_rr.decrprefd
382
383 /*
384 * Given a pointer to an in6_ifaddr (ifaddr),
385 * return a pointer to the addr as a sockaddr_in6
386 */
387 #define IA6_IN6(ia) (&((ia)->ia_addr.sin6_addr))
388 #define IA6_DSTIN6(ia) (&((ia)->ia_dstaddr.sin6_addr))
389 #define IA6_MASKIN6(ia) (&((ia)->ia_prefixmask.sin6_addr))
390 #define IA6_SIN6(ia) (&((ia)->ia_addr))
391 #define IA6_DSTSIN6(ia) (&((ia)->ia_dstaddr))
392 #define IFA_IN6(x) (&((struct sockaddr_in6 *)((x)->ifa_addr))->sin6_addr)
393 #define IFA_DSTIN6(x) (&((struct sockaddr_in6 *)((x)->ifa_dstaddr))->sin6_addr)
394 #define IFA_MASKIN6(x) (&((struct sockaddr_in6 *)((x)->ifa_netmask))->sin6_addr)
395
396 #define IFPR_IN6(x) (&((struct sockaddr_in6 *)((x)->ifpr_prefix))->sin6_addr)
397
398 #ifdef _KERNEL
399 #define IN6_ARE_MASKED_ADDR_EQUAL(d, a, m) ( \
400 (((d)->s6_addr32[0] ^ (a)->s6_addr32[0]) & (m)->s6_addr32[0]) == 0 && \
401 (((d)->s6_addr32[1] ^ (a)->s6_addr32[1]) & (m)->s6_addr32[1]) == 0 && \
402 (((d)->s6_addr32[2] ^ (a)->s6_addr32[2]) & (m)->s6_addr32[2]) == 0 && \
403 (((d)->s6_addr32[3] ^ (a)->s6_addr32[3]) & (m)->s6_addr32[3]) == 0 )
404 #define IN6_MASK_ADDR(a, m) do { \
405 (a)->s6_addr32[0] &= (m)->s6_addr32[0]; \
406 (a)->s6_addr32[1] &= (m)->s6_addr32[1]; \
407 (a)->s6_addr32[2] &= (m)->s6_addr32[2]; \
408 (a)->s6_addr32[3] &= (m)->s6_addr32[3]; \
409 } while (0)
410 #endif
411
412 #define SIOCSIFADDR_IN6 _IOW('i', 12, struct in6_ifreq)
413 #define SIOCGIFADDR_IN6 _IOWR('i', 33, struct in6_ifreq)
414
415 #ifdef _KERNEL
416 /*
417 * SIOCSxxx ioctls should be unused (see comments in in6.c), but
418 * we do not shift numbers for binary compatibility.
419 */
420 #define SIOCSIFDSTADDR_IN6 _IOW('i', 14, struct in6_ifreq)
421 #define SIOCSIFNETMASK_IN6 _IOW('i', 22, struct in6_ifreq)
422 #endif
423
424 #define SIOCGIFDSTADDR_IN6 _IOWR('i', 34, struct in6_ifreq)
425 #define SIOCGIFNETMASK_IN6 _IOWR('i', 37, struct in6_ifreq)
426
427 #define SIOCDIFADDR_IN6 _IOW('i', 25, struct in6_ifreq)
428 #define OSIOCAIFADDR_IN6 _IOW('i', 26, struct oin6_aliasreq)
429 #define SIOCAIFADDR_IN6 _IOW('i', 27, struct in6_aliasreq)
430
431 #define SIOCSIFPHYADDR_IN6 _IOW('i', 70, struct in6_aliasreq)
432 #define SIOCGIFPSRCADDR_IN6 _IOWR('i', 71, struct in6_ifreq)
433 #define SIOCGIFPDSTADDR_IN6 _IOWR('i', 72, struct in6_ifreq)
434
435 #define SIOCGIFAFLAG_IN6 _IOWR('i', 73, struct in6_ifreq)
436
437 #define SIOCGIFINFO_IN6 _IOWR('i', 108, struct in6_ndireq)
438 #define SIOCSIFINFO_IN6 _IOWR('i', 109, struct in6_ndireq)
439 #define SIOCSNDFLUSH_IN6 _IOWR('i', 77, struct in6_ifreq)
440 #define SIOCGNBRINFO_IN6 _IOWR('i', 78, struct in6_nbrinfo)
441 #define SIOCSPFXFLUSH_IN6 _IOWR('i', 79, struct in6_ifreq)
442 #define SIOCSRTRFLUSH_IN6 _IOWR('i', 80, struct in6_ifreq)
443
444 #define SIOCGIFALIFETIME_IN6 _IOWR('i', 81, struct in6_ifreq)
445 #define SIOCGIFSTAT_IN6 _IOWR('i', 83, struct in6_ifreq)
446 #define SIOCGIFSTAT_ICMP6 _IOWR('i', 84, struct in6_ifreq)
447
448 #define SIOCSDEFIFACE_IN6 _IOWR('i', 85, struct in6_ndifreq)
449 #define SIOCGDEFIFACE_IN6 _IOWR('i', 86, struct in6_ndifreq)
450
451 #define SIOCSIFINFO_FLAGS _IOWR('i', 87, struct in6_ndireq) /* XXX */
452
453 #define SIOCSSCOPE6 _IOW('i', 88, struct in6_ifreq)
454 #define SIOCGSCOPE6 _IOWR('i', 89, struct in6_ifreq)
455 #define SIOCGSCOPE6DEF _IOWR('i', 90, struct in6_ifreq)
456
457 #define SIOCSIFPREFIX_IN6 _IOW('i', 100, struct in6_prefixreq) /* set */
458 #define SIOCGIFPREFIX_IN6 _IOWR('i', 101, struct in6_prefixreq) /* get */
459 #define SIOCDIFPREFIX_IN6 _IOW('i', 102, struct in6_prefixreq) /* del */
460 #define SIOCAIFPREFIX_IN6 _IOW('i', 103, struct in6_rrenumreq) /* add */
461 #define SIOCCIFPREFIX_IN6 _IOW('i', 104, \
462 struct in6_rrenumreq) /* change */
463 #define SIOCSGIFPREFIX_IN6 _IOW('i', 105, \
464 struct in6_rrenumreq) /* set global */
465
466 #define SIOCGETSGCNT_IN6 _IOWR('u', 106, \
467 struct sioc_sg_req6) /* get s,g pkt cnt */
468 #define SIOCGETMIFCNT_IN6 _IOWR('u', 107, \
469 struct sioc_mif_req6) /* get pkt cnt per if */
470
471 #define SIOCAADDRCTL_POLICY _IOW('u', 108, struct in6_addrpolicy)
472 #define SIOCDADDRCTL_POLICY _IOW('u', 109, struct in6_addrpolicy)
473
474 #define IN6_IFF_ANYCAST 0x01 /* anycast address */
475 #define IN6_IFF_TENTATIVE 0x02 /* tentative address */
476 #define IN6_IFF_DUPLICATED 0x04 /* DAD detected duplicate */
477 #define IN6_IFF_DETACHED 0x08 /* may be detached from the link */
478 #define IN6_IFF_DEPRECATED 0x10 /* deprecated address */
479 #define IN6_IFF_NODAD 0x20 /* don't perform DAD on this address
480 * (obsolete)
481 */
482 #define IN6_IFF_AUTOCONF 0x40 /* autoconfigurable address. */
483 #define IN6_IFF_TEMPORARY 0x80 /* temporary (anonymous) address. */
484 #define IN6_IFF_PREFER_SOURCE 0x0100 /* preferred address for SAS */
485
486 /* do not input/output */
487 #define IN6_IFF_NOTREADY (IN6_IFF_TENTATIVE|IN6_IFF_DUPLICATED)
488
489 #ifdef _KERNEL
490 #define IN6_ARE_SCOPE_CMP(a,b) ((a)-(b))
491 #define IN6_ARE_SCOPE_EQUAL(a,b) ((a)==(b))
492 #endif
493
494 #ifdef _KERNEL
495 /*
496 * Structure pointed at by ifp->if_inet6.
497 */
498 struct in6_ifextra {
499 counter_u64_t in6_ifstat[sizeof(struct in6_ifstat) / sizeof(uint64_t)];
500 counter_u64_t icmp6_ifstat[sizeof(struct icmp6_ifstat) /
501 sizeof(uint64_t)];
502 /* ND6 */
503 uint32_t nd_linkmtu;
504 uint32_t nd_maxmtu;
505 uint32_t nd_basereachable;
506 uint32_t nd_reachable;
507 uint32_t nd_retrans;
508 uint32_t nd_flags;
509 int nd_recalc_timer;
510 u_int nd_dad_failures;
511 uint8_t nd_curhoplimit;
512 TAILQ_HEAD(, nd_queue) nd_queue;
513
514 struct mld_ifsoftc {
515 /* Timers and invervals measured in seconds. */
516 LIST_ENTRY(mld_ifsoftc) mli_link;
517 struct ifnet *mli_ifp; /* interface this instance belongs to */
518 uint32_t mli_version; /* MLDv1 Host Compatibility Mode */
519 uint32_t mli_v1_timer; /* MLDv1 Querier Present timer */
520 uint32_t mli_v2_timer; /* MLDv2 General Query timer */
521 uint32_t mli_flags; /* MLD per-interface flags */
522 uint32_t mli_rv; /* MLDv2 Robustness Variable */
523 uint32_t mli_qi; /* MLDv2 Query Interval */
524 uint32_t mli_qri; /* MLDv2 Query Response Interval */
525 uint32_t mli_uri; /* MLDv2 Unsolicited Report Interval */
526 struct mbufq mli_gq; /* queue of general query responses */
527 } mld_ifsoftc;
528
529 struct scope6_id {
530 /*
531 * 16 is correspondent to 4bit multicast scope field. i.e. from
532 * node-local to global with some reserved/unassigned types.
533 */
534 #define IPV6_ADDR_SCOPES_COUNT 16
535 uint32_t s6id_list[IPV6_ADDR_SCOPES_COUNT];
536 } scope6_id;
537
538 struct lltable *lltable;
539
540 struct epoch_context epoch_ctx;
541 };
542
543 #define LLTABLE6(ifp) ((ifp)->if_inet6->lltable)
544 #define DAD_FAILURES(ifp) ((ifp)->if_inet6->nd_dad_failures)
545
546 VNET_DECLARE(struct in6_ifaddrhead, in6_ifaddrhead);
547 VNET_DECLARE(struct in6_ifaddrlisthead *, in6_ifaddrhashtbl);
548 VNET_DECLARE(u_long, in6_ifaddrhmask);
549 #define V_in6_ifaddrhead VNET(in6_ifaddrhead)
550 #define V_in6_ifaddrhashtbl VNET(in6_ifaddrhashtbl)
551 #define V_in6_ifaddrhmask VNET(in6_ifaddrhmask)
552
553 #define IN6ADDR_NHASH_LOG2 8
554 #define IN6ADDR_NHASH (1 << IN6ADDR_NHASH_LOG2)
555 #define IN6ADDR_HASHVAL(x) (in6_addrhash(x))
556 #define IN6ADDR_HASH(x) \
557 (&V_in6_ifaddrhashtbl[IN6ADDR_HASHVAL(x) & V_in6_ifaddrhmask])
558
559 static __inline uint32_t
in6_addrhash(const struct in6_addr * in6)560 in6_addrhash(const struct in6_addr *in6)
561 {
562 uint32_t x;
563
564 x = in6->s6_addr32[0] ^ in6->s6_addr32[1] ^ in6->s6_addr32[2] ^
565 in6->s6_addr32[3];
566 return (fnv_32_buf(&x, sizeof(x), FNV1_32_INIT));
567 }
568
569 extern struct rmlock in6_ifaddr_lock;
570 #define IN6_IFADDR_LOCK_ASSERT() rm_assert(&in6_ifaddr_lock, RA_LOCKED)
571 #define IN6_IFADDR_RLOCK(t) rm_rlock(&in6_ifaddr_lock, (t))
572 #define IN6_IFADDR_RLOCK_ASSERT() rm_assert(&in6_ifaddr_lock, RA_RLOCKED)
573 #define IN6_IFADDR_RUNLOCK(t) rm_runlock(&in6_ifaddr_lock, (t))
574 #define IN6_IFADDR_WLOCK() rm_wlock(&in6_ifaddr_lock)
575 #define IN6_IFADDR_WLOCK_ASSERT() rm_assert(&in6_ifaddr_lock, RA_WLOCKED)
576 #define IN6_IFADDR_WUNLOCK() rm_wunlock(&in6_ifaddr_lock)
577
578 #define in6_ifstat_inc(ifp, tag) \
579 do { \
580 if (ifp) \
581 counter_u64_add((ifp)->if_inet6->in6_ifstat[ \
582 offsetof(struct in6_ifstat, tag) / sizeof(uint64_t)], 1);\
583 } while (/*CONSTCOND*/ 0)
584 #endif /* _KERNEL */
585
586 /*
587 * IPv6 multicast MLD-layer source entry.
588 */
589 struct ip6_msource {
590 RB_ENTRY(ip6_msource) im6s_link; /* RB tree links */
591 struct in6_addr im6s_addr;
592 struct im6s_st {
593 uint16_t ex; /* # of exclusive members */
594 uint16_t in; /* # of inclusive members */
595 } im6s_st[2]; /* state at t0, t1 */
596 uint8_t im6s_stp; /* pending query */
597 };
598 RB_HEAD(ip6_msource_tree, ip6_msource);
599
600 /*
601 * IPv6 multicast PCB-layer source entry.
602 *
603 * NOTE: overlapping use of struct ip6_msource fields at start.
604 */
605 struct in6_msource {
606 RB_ENTRY(ip6_msource) im6s_link; /* Common field */
607 struct in6_addr im6s_addr; /* Common field */
608 uint8_t im6sl_st[2]; /* state before/at commit */
609 };
610
611 #ifdef _KERNEL
612 /*
613 * IPv6 source tree comparison function.
614 *
615 * An ordered predicate is necessary; bcmp() is not documented to return
616 * an indication of order, memcmp() is, and is an ISO C99 requirement.
617 */
618 static __inline int
ip6_msource_cmp(const struct ip6_msource * a,const struct ip6_msource * b)619 ip6_msource_cmp(const struct ip6_msource *a, const struct ip6_msource *b)
620 {
621
622 return (memcmp(&a->im6s_addr, &b->im6s_addr, sizeof(struct in6_addr)));
623 }
624 RB_PROTOTYPE(ip6_msource_tree, ip6_msource, im6s_link, ip6_msource_cmp);
625
626 /*
627 * IPv6 multicast PCB-layer group filter descriptor.
628 */
629 struct in6_mfilter {
630 struct ip6_msource_tree im6f_sources; /* source list for (S,G) */
631 u_long im6f_nsrc; /* # of source entries */
632 uint8_t im6f_st[2]; /* state before/at commit */
633 struct in6_multi *im6f_in6m; /* associated multicast address */
634 STAILQ_ENTRY(in6_mfilter) im6f_entry; /* list entry */
635 };
636
637 /*
638 * Structure attached to inpcb.in6p_moptions and passed to ip6_output() when
639 * IPv6 multicast options are in use.
640 * This structure is lazy-allocated.
641 */
642 struct ip6_moptions {
643 struct ifnet *im6o_multicast_ifp; /* ifp for outgoing multicasts */
644 u_char im6o_multicast_hlim; /* hoplimit for outgoing multicasts */
645 u_char im6o_multicast_loop; /* 1 >= hear sends if a member */
646 STAILQ_HEAD(ip6_mfilter_head, in6_mfilter) im6o_head;
647 };
648
649 struct in6_mfilter *ip6_mfilter_alloc(int mflags, int st0, int st1);
650 void ip6_mfilter_free(struct in6_mfilter *);
651
652 static inline void
ip6_mfilter_init(struct ip6_mfilter_head * head)653 ip6_mfilter_init(struct ip6_mfilter_head *head)
654 {
655
656 STAILQ_INIT(head);
657 }
658
659 static inline struct in6_mfilter *
ip6_mfilter_first(const struct ip6_mfilter_head * head)660 ip6_mfilter_first(const struct ip6_mfilter_head *head)
661 {
662
663 return (STAILQ_FIRST(head));
664 }
665
666 static inline void
ip6_mfilter_insert(struct ip6_mfilter_head * head,struct in6_mfilter * imf)667 ip6_mfilter_insert(struct ip6_mfilter_head *head, struct in6_mfilter *imf)
668 {
669
670 STAILQ_INSERT_TAIL(head, imf, im6f_entry);
671 }
672
673 static inline void
ip6_mfilter_remove(struct ip6_mfilter_head * head,struct in6_mfilter * imf)674 ip6_mfilter_remove(struct ip6_mfilter_head *head, struct in6_mfilter *imf)
675 {
676
677 STAILQ_REMOVE(head, imf, in6_mfilter, im6f_entry);
678 }
679
680 #define IP6_MFILTER_FOREACH(imf, head) \
681 STAILQ_FOREACH(imf, head, im6f_entry)
682
683 static inline size_t
ip6_mfilter_count(struct ip6_mfilter_head * head)684 ip6_mfilter_count(struct ip6_mfilter_head *head)
685 {
686 struct in6_mfilter *imf;
687 size_t num = 0;
688
689 STAILQ_FOREACH(imf, head, im6f_entry)
690 num++;
691 return (num);
692 }
693
694 /*
695 * Legacy KAME IPv6 multicast membership descriptor.
696 */
697 struct in6_multi_mship {
698 struct in6_multi *i6mm_maddr;
699 LIST_ENTRY(in6_multi_mship) i6mm_chain;
700 };
701
702 /*
703 * IPv6 group descriptor.
704 *
705 * For every entry on an ifnet's if_multiaddrs list which represents
706 * an IP multicast group, there is one of these structures.
707 *
708 * If any source filters are present, then a node will exist in the RB-tree
709 * to permit fast lookup by source whenever an operation takes place.
710 * This permits pre-order traversal when we issue reports.
711 * Source filter trees are kept separately from the socket layer to
712 * greatly simplify locking.
713 *
714 * When MLDv2 is active, in6m_timer is the response to group query timer.
715 * The state-change timer in6m_sctimer is separate; whenever state changes
716 * for the group the state change record is generated and transmitted,
717 * and kept if retransmissions are necessary.
718 *
719 * FUTURE: in6m_link is now only used when groups are being purged
720 * on a detaching ifnet. It could be demoted to a SLIST_ENTRY, but
721 * because it is at the very start of the struct, we can't do this
722 * w/o breaking the ABI for ifmcstat.
723 */
724 struct in6_multi {
725 struct in6_addr in6m_addr; /* IPv6 multicast address */
726 struct ifnet *in6m_ifp; /* back pointer to ifnet */
727 struct ifmultiaddr *in6m_ifma; /* back pointer to ifmultiaddr */
728 u_int in6m_refcount; /* reference count */
729 u_int in6m_state; /* state of the membership */
730 u_int in6m_timer; /* MLD6 listener report timer */
731
732 /* New fields for MLDv2 follow. */
733 struct mld_ifsoftc *in6m_mli; /* MLD info */
734 SLIST_ENTRY(in6_multi) in6m_nrele; /* to-be-released by MLD */
735 SLIST_ENTRY(in6_multi) in6m_defer; /* deferred MLDv1 */
736 struct ip6_msource_tree in6m_srcs; /* tree of sources */
737 u_long in6m_nsrc; /* # of tree entries */
738
739 struct mbufq in6m_scq; /* queue of pending
740 * state-change packets */
741 struct timeval in6m_lastgsrtv; /* last G-S-R query */
742 uint16_t in6m_sctimer; /* state-change timer */
743 uint16_t in6m_scrv; /* state-change rexmit count */
744
745 /*
746 * SSM state counters which track state at T0 (the time the last
747 * state-change report's RV timer went to zero) and T1
748 * (time of pending report, i.e. now).
749 * Used for computing MLDv2 state-change reports. Several refcounts
750 * are maintained here to optimize for common use-cases.
751 */
752 struct in6m_st {
753 uint16_t iss_fmode; /* MLD filter mode */
754 uint16_t iss_asm; /* # of ASM listeners */
755 uint16_t iss_ex; /* # of exclusive members */
756 uint16_t iss_in; /* # of inclusive members */
757 uint16_t iss_rec; /* # of recorded sources */
758 } in6m_st[2]; /* state at t0, t1 */
759 };
760
761 void in6m_disconnect_locked(struct in6_multi_head *inmh, struct in6_multi *inm);
762
763 /*
764 * Helper function to derive the filter mode on a source entry
765 * from its internal counters. Predicates are:
766 * A source is only excluded if all listeners exclude it.
767 * A source is only included if no listeners exclude it,
768 * and at least one listener includes it.
769 * May be used by ifmcstat(8).
770 */
771 static __inline uint8_t
im6s_get_mode(const struct in6_multi * inm,const struct ip6_msource * ims,uint8_t t)772 im6s_get_mode(const struct in6_multi *inm, const struct ip6_msource *ims,
773 uint8_t t)
774 {
775
776 t = !!t;
777 if (inm->in6m_st[t].iss_ex > 0 &&
778 inm->in6m_st[t].iss_ex == ims->im6s_st[t].ex)
779 return (MCAST_EXCLUDE);
780 else if (ims->im6s_st[t].in > 0 && ims->im6s_st[t].ex == 0)
781 return (MCAST_INCLUDE);
782 return (MCAST_UNDEFINED);
783 }
784
785 /*
786 * Lock macros for IPv6 layer multicast address lists. IPv6 lock goes
787 * before link layer multicast locks in the lock order. In most cases,
788 * consumers of IN_*_MULTI() macros should acquire the locks before
789 * calling them; users of the in_{add,del}multi() functions should not.
790 */
791 extern struct mtx in6_multi_list_mtx;
792 extern struct sx in6_multi_sx;
793
794 #define IN6_MULTI_LIST_LOCK() mtx_lock(&in6_multi_list_mtx)
795 #define IN6_MULTI_LIST_UNLOCK() mtx_unlock(&in6_multi_list_mtx)
796 #define IN6_MULTI_LIST_LOCK_ASSERT() mtx_assert(&in6_multi_list_mtx, MA_OWNED)
797 #define IN6_MULTI_LIST_UNLOCK_ASSERT() mtx_assert(&in6_multi_list_mtx, MA_NOTOWNED)
798
799 #define IN6_MULTI_LOCK() sx_xlock(&in6_multi_sx)
800 #define IN6_MULTI_UNLOCK() sx_xunlock(&in6_multi_sx)
801 #define IN6_MULTI_LOCK_ASSERT() sx_assert(&in6_multi_sx, SA_XLOCKED)
802 #define IN6_MULTI_UNLOCK_ASSERT() sx_assert(&in6_multi_sx, SA_XUNLOCKED)
803
804 /*
805 * Get the in6_multi pointer from a ifmultiaddr.
806 * Returns NULL if ifmultiaddr is no longer valid.
807 */
808 static __inline struct in6_multi *
in6m_ifmultiaddr_get_inm(struct ifmultiaddr * ifma)809 in6m_ifmultiaddr_get_inm(struct ifmultiaddr *ifma)
810 {
811
812 return ((ifma->ifma_addr->sa_family != AF_INET6 ||
813 (ifma->ifma_flags & IFMA_F_ENQUEUED) == 0) ? NULL :
814 ifma->ifma_protospec);
815 }
816
817 struct in6_multi *
818 in6m_lookup_locked(struct ifnet *ifp, const struct in6_addr *mcaddr);
819
820 /*
821 * Wrapper for in6m_lookup_locked().
822 *
823 * SMPng: Assumes network epoch entered and that IN6_MULTI_LOCK() isn't held.
824 */
825 static __inline struct in6_multi *
in6m_lookup(struct ifnet * ifp,const struct in6_addr * mcaddr)826 in6m_lookup(struct ifnet *ifp, const struct in6_addr *mcaddr)
827 {
828 struct in6_multi *inm;
829
830 NET_EPOCH_ASSERT();
831
832 IN6_MULTI_LIST_LOCK();
833 inm = in6m_lookup_locked(ifp, mcaddr);
834 IN6_MULTI_LIST_UNLOCK();
835
836 return (inm);
837 }
838
839 /* Acquire an in6_multi record. */
840 static __inline void
in6m_acquire_locked(struct in6_multi * inm)841 in6m_acquire_locked(struct in6_multi *inm)
842 {
843
844 IN6_MULTI_LIST_LOCK_ASSERT();
845 ++inm->in6m_refcount;
846 }
847
848 static __inline void
in6m_acquire(struct in6_multi * inm)849 in6m_acquire(struct in6_multi *inm)
850 {
851 IN6_MULTI_LIST_LOCK();
852 in6m_acquire_locked(inm);
853 IN6_MULTI_LIST_UNLOCK();
854 }
855
856 static __inline void
in6m_rele_locked(struct in6_multi_head * inmh,struct in6_multi * inm)857 in6m_rele_locked(struct in6_multi_head *inmh, struct in6_multi *inm)
858 {
859 KASSERT(inm->in6m_refcount > 0, ("refcount == %d inm: %p", inm->in6m_refcount, inm));
860 IN6_MULTI_LIST_LOCK_ASSERT();
861
862 if (--inm->in6m_refcount == 0) {
863 MPASS(inm->in6m_ifp == NULL);
864 inm->in6m_ifma->ifma_protospec = NULL;
865 MPASS(inm->in6m_ifma->ifma_llifma == NULL);
866 SLIST_INSERT_HEAD(inmh, inm, in6m_nrele);
867 }
868 }
869
870 struct sockopt;
871 struct inpcbinfo;
872 struct rib_head;
873 struct ucred;
874
875 /* Multicast KPIs. */
876 int im6o_mc_filter(const struct ip6_moptions *, const struct ifnet *,
877 const struct sockaddr *, const struct sockaddr *);
878 int in6_joingroup(struct ifnet *, const struct in6_addr *,
879 struct in6_mfilter *, struct in6_multi **, int);
880 int in6_leavegroup(struct in6_multi *, struct in6_mfilter *);
881 int in6_leavegroup_locked(struct in6_multi *, struct in6_mfilter *);
882 void in6m_clear_recorded(struct in6_multi *);
883 void in6m_commit(struct in6_multi *);
884 void in6m_print(const struct in6_multi *);
885 int in6m_record_source(struct in6_multi *, const struct in6_addr *);
886 void in6m_release_list_deferred(struct in6_multi_head *);
887 void in6m_release_wait(void *);
888 void ip6_freemoptions(struct ip6_moptions *);
889 int ip6_getmoptions(struct inpcb *, struct sockopt *);
890 int ip6_setmoptions(struct inpcb *, struct sockopt *);
891
892 /* flags to in6_update_ifa */
893 #define IN6_IFAUPDATE_DADDELAY 0x1 /* first time to configure an address */
894
895 int in6_mask2len(struct in6_addr *, u_char *);
896 int in6_control(struct socket *, u_long, void *, struct ifnet *,
897 struct thread *);
898 int in6_control_ioctl(u_long, void *, struct ifnet *, struct ucred *);
899 int in6_update_ifa(struct ifnet *, struct in6_aliasreq *,
900 struct in6_ifaddr *, int);
901 void in6_prepare_ifra(struct in6_aliasreq *, const struct in6_addr *,
902 const struct in6_addr *);
903 int in6_addifaddr(struct ifnet *, struct in6_aliasreq *, struct in6_ifaddr *);
904 void in6_purgeaddr(struct ifaddr *);
905 void in6_purgeifaddr(struct in6_ifaddr *);
906 int in6if_do_dad(struct ifnet *);
907 void in6_savemkludge(struct in6_ifaddr *);
908 uint32_t in6_ifmtu(const struct ifnet *);
909 struct rib_head *in6_inithead(uint32_t fibnum);
910 void in6_detachhead(struct rib_head *rh);
911 int in6_if2idlen(struct ifnet *);
912 struct in6_ifaddr *in6ifa_ifpforlinklocal(struct ifnet *, int);
913 struct in6_ifaddr *in6ifa_ifpwithaddr(struct ifnet *, const struct in6_addr *);
914 struct in6_ifaddr *in6ifa_ifwithaddr(const struct in6_addr *, uint32_t, bool);
915 struct in6_ifaddr *in6ifa_llaonifp(struct ifnet *);
916 int in6_addr2zoneid(struct ifnet *, struct in6_addr *, u_int32_t *);
917 int in6_matchlen(struct in6_addr *, struct in6_addr *);
918 int in6_are_prefix_equal(struct in6_addr *, struct in6_addr *, int);
919 void in6_prefixlen2mask(struct in6_addr *, int);
920 int in6_prefix_ioctl(struct socket *, u_long, caddr_t,
921 struct ifnet *);
922 int in6_prefix_add_ifid(int, struct in6_ifaddr *);
923 void in6_prefix_remove_ifid(int, struct in6_ifaddr *);
924 void in6_purgeprefix(struct ifnet *);
925
926 int in6_is_addr_deprecated(struct sockaddr_in6 *);
927 int in6_src_ioctl(u_long, caddr_t);
928
929 void in6_newaddrmsg(struct in6_ifaddr *, int);
930
931 void in6_purge_proxy_ndp(struct ifnet *);
932 void in6_ifarrival(void *, struct ifnet *);
933
934 /*
935 * Extended API for IPv6 FIB support.
936 */
937 struct mbuf *ip6_tryforward(struct mbuf *);
938 #endif /* _KERNEL */
939
940 #endif /* _NETINET6_IN6_VAR_H_ */
941