1 | /* |
2 | * Copyright (c) 2000-2022 Apple Inc. All rights reserved. |
3 | * |
4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ |
5 | * |
6 | * This file contains Original Code and/or Modifications of Original Code |
7 | * as defined in and that are subject to the Apple Public Source License |
8 | * Version 2.0 (the 'License'). You may not use this file except in |
9 | * compliance with the License. The rights granted to you under the License |
10 | * may not be used to create, or enable the creation or redistribution of, |
11 | * unlawful or unlicensed copies of an Apple operating system, or to |
12 | * circumvent, violate, or enable the circumvention or violation of, any |
13 | * terms of an Apple operating system software license agreement. |
14 | * |
15 | * Please obtain a copy of the License at |
16 | * http://www.opensource.apple.com/apsl/ and read it before using this file. |
17 | * |
18 | * The Original Code and all software distributed under the License are |
19 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER |
20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, |
22 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. |
23 | * Please see the License for the specific language governing rights and |
24 | * limitations under the License. |
25 | * |
26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ |
27 | */ |
28 | /* |
29 | * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. |
30 | * All rights reserved. |
31 | * |
32 | * Redistribution and use in source and binary forms, with or without |
33 | * modification, are permitted provided that the following conditions |
34 | * are met: |
35 | * 1. Redistributions of source code must retain the above copyright |
36 | * notice, this list of conditions and the following disclaimer. |
37 | * 2. Redistributions in binary form must reproduce the above copyright |
38 | * notice, this list of conditions and the following disclaimer in the |
39 | * documentation and/or other materials provided with the distribution. |
40 | * 3. Neither the name of the project nor the names of its contributors |
41 | * may be used to endorse or promote products derived from this software |
42 | * without specific prior written permission. |
43 | * |
44 | * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND |
45 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
46 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
47 | * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE |
48 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
49 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
50 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
51 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
52 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
53 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
54 | * SUCH DAMAGE. |
55 | */ |
56 | |
57 | #ifndef _NETINET6_ND6_H_ |
58 | #define _NETINET6_ND6_H_ |
59 | #include <sys/appleapiopts.h> |
60 | #include <net/net_kev.h> |
61 | |
62 | /* see net/route.h, or net/if_inarp.h */ |
63 | #ifndef RTF_ANNOUNCE |
64 | #define RTF_ANNOUNCE RTF_PROTO2 |
65 | #endif |
66 | |
67 | #include <sys/queue.h> |
68 | |
69 | #ifdef BSD_KERNEL_PRIVATE |
70 | #include <net/flowadv.h> |
71 | #include <kern/locks.h> |
72 | #include <sys/tree.h> |
73 | #include <sys/eventhandler.h> |
74 | #include <netinet6/nd6_var.h> |
75 | #include <sys/sdt.h> |
76 | |
77 | struct llinfo_nd6 { |
78 | /* |
79 | * The following are protected by rnh_lock |
80 | */ |
81 | struct llinfo_nd6 *ln_next; |
82 | struct llinfo_nd6 *ln_prev; |
83 | struct rtentry *ln_rt; |
84 | /* |
85 | * The following are protected by rt_lock |
86 | */ |
87 | struct ifnet *ln_exclifp; /* excluded interface (prefix proxy) */ |
88 | struct mbuf *ln_hold; /* last packet until resolved/timeout */ |
89 | uint32_t ln_asked; /* # of queries already sent for this addr */ |
90 | short ln_state; /* reachability state */ |
91 | short ln_router; /* 2^0: ND6 router bit */ |
92 | u_int32_t ln_flags; /* flags; see below */ |
93 | u_int64_t ln_expire; /* lifetime for NDP state transition */ |
94 | u_int64_t ln_lastused; /* last used timestamp */ |
95 | struct if_llreach *ln_llreach; /* link-layer reachability record */ |
96 | }; |
97 | |
98 | /* Values for ln_flags */ |
99 | #define ND6_LNF_TIMER_SKIP 0x1 /* modified by nd6_timer() */ |
100 | #define ND6_LNF_IN_USE 0x2 /* currently in llinfo_nd6 list */ |
101 | #endif /* BSD_KERNEL_PRIVATE */ |
102 | |
103 | #define ND6_LLINFO_PURGE -3 |
104 | #define ND6_LLINFO_NOSTATE -2 |
105 | /* |
106 | * We don't need the WAITDELETE state any more, but we keep the definition |
107 | * in a comment line instead of removing it. This is necessary to avoid |
108 | * unintentionally reusing the value for another purpose, which might |
109 | * affect backward compatibility with old applications. |
110 | * (20000711 jinmei@kame.net) |
111 | */ |
112 | /* #define ND6_LLINFO_WAITDELETE -1 */ |
113 | #define ND6_LLINFO_INCOMPLETE 0 |
114 | #define ND6_LLINFO_REACHABLE 1 |
115 | #define ND6_LLINFO_STALE 2 |
116 | #define ND6_LLINFO_DELAY 3 |
117 | #define ND6_LLINFO_PROBE 4 |
118 | |
119 | #ifdef BSD_KERNEL_PRIVATE |
120 | |
121 | #define ND6_CACHE_STATE_TRANSITION(ln, nstate) do {\ |
122 | DTRACE_IP2(nd6_state_transition, struct llinfo_nd6 *, (ln), int, (nstate));\ |
123 | if (nd6_debug >= 1) {\ |
124 | struct rtentry *ln_rt = (ln) != NULL ? (ln)->ln_rt : NULL; \ |
125 | nd6log(info,\ |
126 | "[%s:%d]: NDP cache entry changed from %s -> %s for address %s.\n",\ |
127 | __func__,\ |
128 | __LINE__,\ |
129 | ndcache_state2str((ln)->ln_state),\ |
130 | ndcache_state2str((nstate)),\ |
131 | ln_rt != NULL ? ip6_sprintf(&SIN6(rt_key(ln_rt))->sin6_addr) : "N/A");\ |
132 | }\ |
133 | if ((ln) != NULL) {\ |
134 | if ((ln)->ln_rt != NULL && (ln)->ln_rt->rt_ifp != NULL &&\ |
135 | ((ln)->ln_rt->rt_ifp->if_eflags & IFEF_IPV6_ND6ALT) &&\ |
136 | ((ln)->ln_state == ND6_LLINFO_REACHABLE)) {\ |
137 | VERIFY((nstate) != ND6_LLINFO_STALE &&\ |
138 | (nstate) != ND6_LLINFO_DELAY &&\ |
139 | (nstate) != ND6_LLINFO_PROBE);\ |
140 | }\ |
141 | (ln)->ln_state = (nstate);\ |
142 | }\ |
143 | } while(0) |
144 | |
145 | #define ND6_IS_LLINFO_PROBREACH(n) ((n)->ln_state > ND6_LLINFO_INCOMPLETE) |
146 | #define ND6_LLINFO_PERMANENT(n) \ |
147 | (((n)->ln_expire == 0) && ((n)->ln_state > ND6_LLINFO_INCOMPLETE)) |
148 | |
149 | #define ND6_EUI64_GBIT 0x01 |
150 | #define ND6_EUI64_UBIT 0x02 |
151 | |
152 | #define ND6_EUI64_TO_IFID(in6) \ |
153 | do {(in6)->s6_addr[8] ^= ND6_EUI64_UBIT; } while (0) |
154 | |
155 | #define ND6_EUI64_GROUP(in6) ((in6)->s6_addr[8] & ND6_EUI64_GBIT) |
156 | #define ND6_EUI64_INDIVIDUAL(in6) (!ND6_EUI64_GROUP(in6)) |
157 | #define ND6_EUI64_LOCAL(in6) ((in6)->s6_addr[8] & ND6_EUI64_UBIT) |
158 | #define ND6_EUI64_UNIVERSAL(in6) (!ND6_EUI64_LOCAL(in6)) |
159 | #define ND6_IFID_LOCAL(in6) (!ND6_EUI64_LOCAL(in6)) |
160 | #define ND6_IFID_UNIVERSAL(in6) (!ND6_EUI64_UNIVERSAL(in6)) |
161 | #endif /* BSD_KERNEL_PRIVATE */ |
162 | |
163 | #if !defined(BSD_KERNEL_PRIVATE) |
164 | struct nd_ifinfo { |
165 | #else |
166 | /* For binary compatibility, this structure must not change */ |
167 | /* NOTE: nd_ifinfo is defined in nd6_var.h */ |
168 | struct nd_ifinfo_compat { |
169 | #endif /* !BSD_KERNEL_PRIVATE */ |
170 | u_int32_t linkmtu; /* LinkMTU */ |
171 | u_int32_t maxmtu; /* Upper bound of LinkMTU */ |
172 | u_int32_t basereachable; /* BaseReachableTime */ |
173 | u_int32_t reachable; /* Reachable Time */ |
174 | u_int32_t retrans; /* Retrans Timer */ |
175 | u_int32_t flags; /* Flags */ |
176 | int recalctm; /* BaseReacable re-calculation timer */ |
177 | u_int8_t chlim; /* CurHopLimit */ |
178 | u_int8_t receivedra; |
179 | /* the following 3 members are for privacy extension for addrconf */ |
180 | u_int8_t randomseed0[8]; /* upper 64 bits of SHA256 digest */ |
181 | u_int8_t randomseed1[8]; /* lower 64 bits (usually the EUI64 IFID) */ |
182 | u_int8_t randomid[8]; /* current random ID */ |
183 | }; |
184 | |
185 | #define ND6_IFF_PERFORMNUD 0x1 |
186 | #if defined(PRIVATE) |
187 | |
188 | /* |
189 | * APPLE: not used. Interface specific router advertisements are handled with a |
190 | * specific ifnet flag: IFEF_ACCEPT_RTADVD |
191 | */ |
192 | #define ND6_IFF_ACCEPT_RTADV 0x2 |
193 | |
194 | /* APPLE: NOT USED not related to ND. */ |
195 | #define ND6_IFF_PREFER_SOURCE 0x4 |
196 | |
197 | /* IPv6 operation is disabled due to * DAD failure. (XXX: not ND-specific) */ |
198 | #define ND6_IFF_IFDISABLED 0x8 |
199 | |
200 | #define ND6_IFF_DONT_SET_IFROUTE 0x10 /* NOT USED */ |
201 | #endif /* PRIVATE */ |
202 | #define ND6_IFF_PROXY_PREFIXES 0x20 |
203 | #define ND6_IFF_IGNORE_NA 0x40 |
204 | #if defined(PRIVATE) |
205 | #define ND6_IFF_INSECURE 0x80 |
206 | #endif |
207 | #define ND6_IFF_REPLICATED 0x100 /* sleep proxy registered */ |
208 | #define ND6_IFF_DAD 0x200 /* Perform DAD on the interface */ |
209 | |
210 | extern int dad_enhanced; |
211 | #define ND6_DAD_ENHANCED_DEFAULT 1 |
212 | |
213 | struct in6_nbrinfo { |
214 | char ifname[IFNAMSIZ]; /* if name, e.g. "en0" */ |
215 | struct in6_addr addr; /* IPv6 address of the neighbor */ |
216 | long asked; /* # of queries already sent for this addr */ |
217 | int isrouter; /* if it acts as a router */ |
218 | int state; /* reachability state */ |
219 | int expire; /* lifetime for NDP state transition */ |
220 | }; |
221 | |
222 | #if defined(BSD_KERNEL_PRIVATE) |
223 | struct in6_nbrinfo_32 { |
224 | char ifname[IFNAMSIZ]; |
225 | struct in6_addr addr; |
226 | u_int32_t asked; |
227 | int isrouter; |
228 | int state; |
229 | int expire; |
230 | }; |
231 | |
232 | struct in6_nbrinfo_64 { |
233 | char ifname[IFNAMSIZ]; |
234 | struct in6_addr addr; |
235 | long asked; |
236 | int isrouter __attribute__((aligned(8))); |
237 | int state; |
238 | int expire; |
239 | } __attribute__((aligned(8))); |
240 | #endif /* BSD_KERNEL_PRIVATE */ |
241 | |
242 | #define DRLSTSIZ 10 |
243 | #define PRLSTSIZ 10 |
244 | |
245 | struct in6_drlist { |
246 | char ifname[IFNAMSIZ]; |
247 | struct { |
248 | struct in6_addr rtaddr; |
249 | u_char flags; |
250 | u_short rtlifetime; |
251 | u_long expire; |
252 | u_short if_index; |
253 | } defrouter[DRLSTSIZ]; |
254 | }; |
255 | |
256 | #if defined(BSD_KERNEL_PRIVATE) |
257 | #define ND6_PROCESS_RTI_ENABLE 1 |
258 | #define ND6_PROCESS_RTI_DISABLE 0 |
259 | #define ND6_PROCESS_RTI_DEFAULT ND6_PROCESS_RTI_ENABLE |
260 | |
261 | extern int nd6_process_rti; |
262 | |
263 | struct in6_drlist_32 { |
264 | char ifname[IFNAMSIZ]; |
265 | struct { |
266 | struct in6_addr rtaddr; |
267 | u_char flags; |
268 | u_short rtlifetime; |
269 | u_int32_t expire; |
270 | u_short if_index; |
271 | } defrouter[DRLSTSIZ]; |
272 | }; |
273 | |
274 | struct in6_drlist_64 { |
275 | char ifname[IFNAMSIZ]; |
276 | struct { |
277 | struct in6_addr rtaddr; |
278 | u_char flags; |
279 | u_short rtlifetime; |
280 | u_long expire __attribute__((aligned(8))); |
281 | u_short if_index __attribute__((aligned(8))); |
282 | } defrouter[DRLSTSIZ] __attribute__((aligned(8))); |
283 | }; |
284 | #endif /* BSD_KERNEL_PRIVATE */ |
285 | |
286 | /* valid values for stateflags */ |
287 | #define NDDRF_INSTALLED 0x01 /* installed in the routing table */ |
288 | #define NDDRF_IFSCOPE 0x02 /* installed as a scoped route */ |
289 | #define NDDRF_STATIC 0x04 /* for internal use only */ |
290 | #define NDDRF_MAPPED 0x08 /* Default router addr is mapped to a different one for routing */ |
291 | #define NDDRF_INELIGIBLE 0x10 /* Default router entry is ineligible for default router selection */ |
292 | |
293 | struct in6_defrouter { |
294 | struct sockaddr_in6 rtaddr; |
295 | u_char flags; |
296 | u_char stateflags; |
297 | u_short rtlifetime; |
298 | u_long expire; |
299 | u_short if_index; |
300 | }; |
301 | |
302 | #if defined(BSD_KERNEL_PRIVATE) |
303 | struct in6_defrouter_32 { |
304 | struct sockaddr_in6 rtaddr; |
305 | u_char flags; |
306 | u_char stateflags; |
307 | u_short rtlifetime; |
308 | u_int32_t expire; |
309 | u_short if_index; |
310 | }; |
311 | |
312 | struct in6_defrouter_64 { |
313 | struct sockaddr_in6 rtaddr; |
314 | u_char flags; |
315 | u_char stateflags; |
316 | u_short rtlifetime; |
317 | u_long expire __attribute__((aligned(8))); |
318 | u_short if_index __attribute__((aligned(8))); |
319 | } __attribute__((aligned(8))); |
320 | #endif /* BSD_KERNEL_PRIVATE */ |
321 | |
322 | struct in6_prlist { |
323 | char ifname[IFNAMSIZ]; |
324 | struct { |
325 | struct in6_addr prefix; |
326 | struct prf_ra raflags; |
327 | u_char prefixlen; |
328 | u_char origin; |
329 | u_long vltime; |
330 | u_long pltime; |
331 | u_long expire; |
332 | u_short if_index; |
333 | u_short advrtrs; /* number of advertisement routers */ |
334 | struct in6_addr advrtr[DRLSTSIZ]; /* XXX: explicit limit */ |
335 | } prefix[PRLSTSIZ]; |
336 | }; |
337 | |
338 | #if defined(BSD_KERNEL_PRIVATE) |
339 | struct in6_prlist_32 { |
340 | char ifname[IFNAMSIZ]; |
341 | struct { |
342 | struct in6_addr prefix; |
343 | struct prf_ra raflags; |
344 | u_char prefixlen; |
345 | u_char origin; |
346 | u_int32_t vltime; |
347 | u_int32_t pltime; |
348 | u_int32_t expire; |
349 | u_short if_index; |
350 | u_short advrtrs; |
351 | struct in6_addr advrtr[DRLSTSIZ]; |
352 | } prefix[PRLSTSIZ]; |
353 | }; |
354 | |
355 | struct in6_prlist_64 { |
356 | char ifname[IFNAMSIZ]; |
357 | struct { |
358 | struct in6_addr prefix; |
359 | struct prf_ra raflags; |
360 | u_char prefixlen; |
361 | u_char origin; |
362 | u_long vltime __attribute__((aligned(8))); |
363 | u_long pltime __attribute__((aligned(8))); |
364 | u_long expire __attribute__((aligned(8))); |
365 | u_short if_index; |
366 | u_short advrtrs; |
367 | u_int32_t pad; |
368 | struct in6_addr advrtr[DRLSTSIZ]; |
369 | } prefix[PRLSTSIZ]; |
370 | }; |
371 | #endif /* BSD_KERNEL_PRIVATE */ |
372 | |
373 | struct in6_prefix { |
374 | struct sockaddr_in6 prefix; |
375 | struct prf_ra raflags; |
376 | u_char prefixlen; |
377 | u_char origin; |
378 | u_long vltime; |
379 | u_long pltime; |
380 | u_long expire; |
381 | u_int32_t flags; |
382 | int refcnt; |
383 | u_short if_index; |
384 | u_short advrtrs; /* number of advertisement routers */ |
385 | /* struct sockaddr_in6 advrtr[] */ |
386 | }; |
387 | |
388 | #if defined(BSD_KERNEL_PRIVATE) |
389 | struct in6_prefix_32 { |
390 | struct sockaddr_in6 prefix; |
391 | struct prf_ra raflags; |
392 | u_char prefixlen; |
393 | u_char origin; |
394 | u_int32_t vltime; |
395 | u_int32_t pltime; |
396 | u_int32_t expire; |
397 | u_int32_t flags; |
398 | int refcnt; |
399 | u_short if_index; |
400 | u_short advrtrs; /* number of advertisement routers */ |
401 | /* struct sockaddr_in6 advrtr[] */ |
402 | }; |
403 | |
404 | struct in6_prefix_64 { |
405 | struct sockaddr_in6 prefix; |
406 | struct prf_ra raflags; |
407 | u_char prefixlen; |
408 | u_char origin; |
409 | u_long vltime __attribute__((aligned(8))); |
410 | u_long pltime __attribute__((aligned(8))); |
411 | u_long expire __attribute__((aligned(8))); |
412 | u_int32_t flags __attribute__((aligned(8))); |
413 | int refcnt; |
414 | u_short if_index; |
415 | u_short advrtrs; |
416 | /* struct sockaddr_in6 advrtr[] */ |
417 | }; |
418 | #endif /* BSD_KERNEL_PRIVATE */ |
419 | |
420 | struct in6_ondireq { |
421 | char ifname[IFNAMSIZ]; |
422 | struct { |
423 | u_int32_t linkmtu; /* LinkMTU */ |
424 | u_int32_t maxmtu; /* Upper bound of LinkMTU */ |
425 | u_int32_t basereachable; /* BaseReachableTime */ |
426 | u_int32_t reachable; /* Reachable Time */ |
427 | u_int32_t retrans; /* Retrans Timer */ |
428 | u_int32_t flags; /* Flags */ |
429 | int recalctm; /* BaseReacable re-calculation timer */ |
430 | u_int8_t chlim; /* CurHopLimit */ |
431 | /* Number of routers learned on the interface */ |
432 | u_int8_t receivedra; |
433 | /* |
434 | * The current collision count value |
435 | * being used for secure address generation. |
436 | */ |
437 | u_int8_t collision_count; |
438 | } ndi; |
439 | }; |
440 | |
441 | #if !defined(BSD_KERNEL_PRIVATE) |
442 | struct in6_ndireq { |
443 | char ifname[IFNAMSIZ]; |
444 | struct nd_ifinfo ndi; |
445 | }; |
446 | #else |
447 | struct in6_ndireq { |
448 | char ifname[IFNAMSIZ]; |
449 | struct nd_ifinfo_compat ndi; |
450 | }; |
451 | #endif /* !BSD_KERNEL_PRIVATE */ |
452 | |
453 | struct in6_ndifreq { |
454 | char ifname[IFNAMSIZ]; |
455 | u_long ifindex; |
456 | }; |
457 | |
458 | #define MAX_RTR_SOLICITATION_DELAY 1 /* 1sec */ |
459 | #define RTR_SOLICITATION_INTERVAL 4 /* 4sec */ |
460 | |
461 | #if defined(BSD_KERNEL_PRIVATE) |
462 | struct in6_ndifreq_32 { |
463 | char ifname[IFNAMSIZ]; |
464 | u_int32_t ifindex; |
465 | }; |
466 | |
467 | struct in6_ndifreq_64 { |
468 | char ifname[IFNAMSIZ]; |
469 | u_int64_t ifindex __attribute__((aligned(8))); |
470 | }; |
471 | #endif /* BSD_KERNEL_PRIVATE */ |
472 | |
473 | /* Prefix status */ |
474 | #define NDPRF_ONLINK 0x1 |
475 | #define NDPRF_DETACHED 0x2 |
476 | #define NDPRF_STATIC 0x100 |
477 | #define NDPRF_IFSCOPE 0x1000 |
478 | #define NDPRF_PRPROXY 0x2000 |
479 | #ifdef BSD_KERNEL_PRIVATE |
480 | #define NDPRF_PROCESSED_ONLINK 0x08000 |
481 | #define NDPRF_PROCESSED_SERVICE 0x10000 |
482 | #define NDPRF_DEFUNCT 0x20000 |
483 | #define NDPRF_CLAT46 0x40000 |
484 | |
485 | #define CLAT46_COLLISION_COUNT_OFFSET 128 |
486 | #endif |
487 | |
488 | /* protocol constants */ |
489 | #define MAX_RTR_SOLICITATION_DELAY 1 /* 1sec */ |
490 | #define RTR_SOLICITATION_INTERVAL 4 /* 4sec */ |
491 | #define MAX_RTR_SOLICITATIONS 3 |
492 | |
493 | #define ND6_INFINITE_LIFETIME 0xffffffff |
494 | #define ND6_MAX_LIFETIME 0x7fffffff |
495 | |
496 | #ifdef BSD_KERNEL_PRIVATE |
497 | #define ND_IFINFO(ifp) \ |
498 | ((ifp == NULL) ? NULL : \ |
499 | ((IN6_IFEXTRA(ifp) == NULL) ? NULL : \ |
500 | (&IN6_IFEXTRA(ifp)->nd_ifinfo))) |
501 | |
502 | /* |
503 | * In a more readable form, we derive linkmtu based on: |
504 | * |
505 | * if (ifp == NULL) |
506 | * linkmtu = IPV6_MMTU |
507 | * else if (ND_IFINFO(ifp) == NULL || !ND_IFINFO(ifp)->initialized) |
508 | * linkmtu = ifp->if_mtu; |
509 | * else if (ND_IFINFO(ifp)->linkmtu && ND_IFINFO(ifp)->linkmtu < ifp->if_mtu) |
510 | * linkmtu = ND_IFINFO(ifp)->linkmtu; |
511 | * else if ((ND_IFINFO(ifp)->maxmtu && ND_IFINFO(ifp)->maxmtu < ifp->if_mtu)) |
512 | * linkmtu = ND_IFINFO(ifp)->maxmtu; |
513 | * else |
514 | * linkmtu = ifp->if_mtu; |
515 | */ |
516 | #define IN6_LINKMTU(ifp) \ |
517 | (ifp == NULL ? IPV6_MMTU : \ |
518 | (ND_IFINFO(ifp) == NULL || !ND_IFINFO(ifp)->initialized) ? \ |
519 | (ifp)->if_mtu : ((ND_IFINFO(ifp)->linkmtu && \ |
520 | ND_IFINFO(ifp)->linkmtu < (ifp)->if_mtu) ? ND_IFINFO(ifp)->linkmtu : \ |
521 | ((ND_IFINFO(ifp)->maxmtu && ND_IFINFO(ifp)->maxmtu < (ifp)->if_mtu) ? \ |
522 | ND_IFINFO(ifp)->maxmtu : (ifp)->if_mtu))) |
523 | |
524 | /* node constants */ |
525 | #define MAX_REACHABLE_TIME 3600000 /* msec */ |
526 | #define REACHABLE_TIME 30000 /* msec */ |
527 | #define RETRANS_TIMER 1000 /* msec */ |
528 | #define MIN_RANDOM_FACTOR 512 /* 1024 * 0.5 */ |
529 | #define MAX_RANDOM_FACTOR 1536 /* 1024 * 1.5 */ |
530 | #define DEF_TEMP_VALID_LIFETIME 604800 /* 1 week */ |
531 | #define DEF_TEMP_PREFERRED_LIFETIME 86400 /* 1 day */ |
532 | #define TEMPADDR_REGEN_ADVANCE 5 /* sec */ |
533 | #define MAX_TEMP_DESYNC_FACTOR 600 /* 10 min */ |
534 | #define ND_COMPUTE_RTIME(x) \ |
535 | (((MIN_RANDOM_FACTOR * (x >> 10)) + (RandomULong() & \ |
536 | ((MAX_RANDOM_FACTOR - MIN_RANDOM_FACTOR) * (x >> 10)))) /1000) |
537 | |
538 | #define IP6_USE_TMPADDR_DEFAULT 1 |
539 | #define IP6_ULA_USE_TMPADDR_DEFAULT 0 |
540 | /* prefix expiry times */ |
541 | #define ND6_PREFIX_EXPIRY_UNSPEC -1 |
542 | #define ND6_PREFIX_EXPIRY_NEVER 0 |
543 | |
544 | TAILQ_HEAD(nd_drhead, nd_defrouter); |
545 | struct nd_defrouter { |
546 | decl_lck_mtx_data(, nddr_lock); |
547 | decl_lck_mtx_data(, nddr_ref_lock); |
548 | TAILQ_ENTRY(nd_defrouter) dr_entry; |
549 | struct in6_addr rtaddr; |
550 | u_int32_t nddr_refcount; |
551 | u_int32_t nddr_debug; |
552 | u_int64_t expire; |
553 | u_int64_t base_calendartime; /* calendar time at creation */ |
554 | u_int64_t base_uptime; /* uptime at creation */ |
555 | u_char flags; /* flags on RA message */ |
556 | u_char stateflags; |
557 | u_int32_t rtlifetime; |
558 | int err; |
559 | struct ifnet *ifp; |
560 | struct in6_addr rtaddr_mapped; /* Mapped gateway address for routing */ |
561 | boolean_t is_reachable; |
562 | void (*nddr_trace)(struct nd_defrouter *, int); /* trace callback fn */ |
563 | }; |
564 | |
565 | #define NDDR_LOCK_ASSERT_HELD(_nddr) \ |
566 | LCK_MTX_ASSERT(&(_nddr)->nddr_lock, LCK_MTX_ASSERT_OWNED) |
567 | |
568 | #define NDDR_LOCK_ASSERT_NOTHELD(_nddr) \ |
569 | LCK_MTX_ASSERT(&(_nddr)->nddr_lock, LCK_MTX_ASSERT_NOTOWNED) |
570 | |
571 | #define NDDR_LOCK(_nddr) \ |
572 | lck_mtx_lock(&(_nddr)->nddr_lock) |
573 | |
574 | #define NDDR_LOCK_SPIN(_nddr) \ |
575 | lck_mtx_lock_spin(&(_nddr)->nddr_lock) |
576 | |
577 | #define NDDR_CONVERT_LOCK(_nddr) do { \ |
578 | NDPR_LOCK_ASSERT_HELD(_nddr); \ |
579 | lck_mtx_convert_spin(&(_nddr)->nddr_lock); \ |
580 | } while (0) |
581 | |
582 | #define NDDR_UNLOCK(_nddr) \ |
583 | lck_mtx_unlock(&(_nddr)->nddr_lock) |
584 | |
585 | #define NDDR_REF_LOCK(_nddr) \ |
586 | lck_mtx_lock(&(_nddr)->nddr_ref_lock) |
587 | |
588 | #define NDDR_REF_LOCK_SPIN(_nddr) \ |
589 | lck_mtx_lock_spin(&(_nddr)->nddr_ref_lock) |
590 | |
591 | #define NDDR_REF_UNLOCK(_nddr) \ |
592 | lck_mtx_unlock(&(_nddr)->nddr_ref_lock) |
593 | |
594 | #define NDDR_ADDREF(_nddr) \ |
595 | nddr_addref(_nddr) |
596 | |
597 | #define NDDR_REMREF(_nddr) \ |
598 | nddr_remref(_nddr) \ |
599 | |
600 | TAILQ_HEAD(nd_rtihead, nd_route_info); |
601 | /* |
602 | * The ordering below is important and it should always start |
603 | * with nd_drhead as the first element. |
604 | * It gets passed in as the generic nd_drhead to router management code. |
605 | * The extra information stored here includes the prefix/prefix-length |
606 | * which the router list belongs to. |
607 | */ |
608 | struct nd_route_info { |
609 | struct nd_drhead nd_rti_router_list; |
610 | TAILQ_ENTRY(nd_route_info) nd_rti_entry; |
611 | struct in6_addr nd_rti_prefix; |
612 | u_int8_t nd_rti_prefixlen; |
613 | }; |
614 | |
615 | struct nd_route_info *ndrti_alloc(void); |
616 | void nd6_rti_list_wait(const char *); |
617 | void nd6_rti_list_signal_done(void); |
618 | void ndrti_free(struct nd_route_info *rti); |
619 | void nd6_rtilist_remove(struct nd_route_info *); |
620 | void nd6_rtilist_update(struct nd_route_info *, struct nd_defrouter *); |
621 | int nd6_rtilist_add(struct nd_route_info *, struct nd_defrouter *, |
622 | struct nd_route_info **); |
623 | void nd6_rti_purge(struct nd_route_info *); |
624 | |
625 | /* define struct prproxy_sols_tree */ |
626 | RB_HEAD(prproxy_sols_tree, nd6_prproxy_soltgt); |
627 | |
628 | struct nd_prefix { |
629 | decl_lck_mtx_data(, ndpr_lock); |
630 | decl_lck_mtx_data(, ndpr_ref_lock); |
631 | u_int32_t ndpr_refcount; /* reference count */ |
632 | u_int32_t ndpr_debug; /* see ifa_debug flags */ |
633 | struct ifnet *ndpr_ifp; |
634 | struct rtentry *ndpr_rt; |
635 | LIST_ENTRY(nd_prefix) ndpr_entry; |
636 | struct sockaddr_in6 ndpr_prefix; /* prefix */ |
637 | struct in6_addr ndpr_mask; /* netmask derived from the prefix */ |
638 | struct in6_addr ndpr_addr; /* address that is derived from the prefix */ |
639 | u_int32_t ndpr_vltime; /* advertised valid lifetime */ |
640 | u_int32_t ndpr_pltime; /* advertised preferred lifetime */ |
641 | u_int64_t ndpr_preferred; /* preferred time of the prefix */ |
642 | u_int64_t ndpr_expire; /* expiration time of the prefix */ |
643 | u_int64_t ndpr_lastupdate; /* rx time of last advertisement */ |
644 | u_int64_t ndpr_base_calendartime; /* calendar time at creation */ |
645 | u_int64_t ndpr_base_uptime; /* uptime at creation */ |
646 | struct prf_ra ndpr_flags; |
647 | unsigned int ndpr_genid; /* protects ndpr_advrtrs */ |
648 | u_int32_t ndpr_stateflags; /* actual state flags */ |
649 | /* list of routers that advertise the prefix: */ |
650 | LIST_HEAD(pr_rtrhead, nd_pfxrouter) ndpr_advrtrs; |
651 | u_char ndpr_plen; |
652 | int ndpr_addrcnt; /* reference counter from addresses */ |
653 | int ndpr_manual_addrcnt; /* reference counter non-autoconf addresses */ |
654 | u_int32_t ndpr_allmulti_cnt; /* total all-multi reqs */ |
655 | u_int32_t ndpr_prproxy_sols_cnt; /* total # of proxied NS */ |
656 | struct prproxy_sols_tree ndpr_prproxy_sols; /* tree of proxied NS */ |
657 | void (*ndpr_trace)(struct nd_prefix *, int); /* trace callback fn */ |
658 | }; |
659 | |
660 | #define ndpr_next ndpr_entry.le_next |
661 | |
662 | #define ndpr_raf ndpr_flags |
663 | #define ndpr_raf_onlink ndpr_flags.onlink |
664 | #define ndpr_raf_auto ndpr_flags.autonomous |
665 | #define ndpr_raf_router ndpr_flags.router |
666 | /* |
667 | * We keep expired prefix for certain amount of time, for validation purposes. |
668 | * 1800s = MaxRtrAdvInterval |
669 | */ |
670 | #define NDPR_KEEP_EXPIRED (1800 * 2) |
671 | |
672 | #define NDPR_LOCK_ASSERT_HELD(_ndpr) \ |
673 | LCK_MTX_ASSERT(&(_ndpr)->ndpr_lock, LCK_MTX_ASSERT_OWNED) |
674 | |
675 | #define NDPR_LOCK_ASSERT_NOTHELD(_ndpr) \ |
676 | LCK_MTX_ASSERT(&(_ndpr)->ndpr_lock, LCK_MTX_ASSERT_NOTOWNED) |
677 | |
678 | #define NDPR_LOCK(_ndpr) \ |
679 | lck_mtx_lock(&(_ndpr)->ndpr_lock) |
680 | |
681 | #define NDPR_LOCK_SPIN(_ndpr) \ |
682 | lck_mtx_lock_spin(&(_ndpr)->ndpr_lock) |
683 | |
684 | #define NDPR_CONVERT_LOCK(_ndpr) do { \ |
685 | NDPR_LOCK_ASSERT_HELD(_ndpr); \ |
686 | lck_mtx_convert_spin(&(_ndpr)->ndpr_lock); \ |
687 | } while (0) |
688 | |
689 | #define NDPR_UNLOCK(_ndpr) \ |
690 | lck_mtx_unlock(&(_ndpr)->ndpr_lock) |
691 | |
692 | #define NDPR_REF_LOCK(_ndpr) \ |
693 | lck_mtx_lock(&(_ndpr)->ndpr_ref_lock) |
694 | |
695 | #define NDPR_REF_LOCK_SPIN(_ndpr) \ |
696 | lck_mtx_lock_spin(&(_ndpr)->ndpr_ref_lock) |
697 | |
698 | #define NDPR_REF_UNLOCK(_ndpr) \ |
699 | lck_mtx_unlock(&(_ndpr)->ndpr_ref_lock) |
700 | |
701 | #define NDPR_ADDREF(_ndpr) \ |
702 | ndpr_addref(_ndpr) |
703 | |
704 | #define NDPR_REMREF(_ndpr) \ |
705 | ndpr_remref(_ndpr) \ |
706 | |
707 | /* |
708 | * Message format for use in obtaining information about prefixes |
709 | * from inet6 sysctl function |
710 | */ |
711 | struct inet6_ndpr_msghdr { |
712 | u_short inpm_msglen; /* to skip over non-understood messages */ |
713 | u_char inpm_version; /* future binary compatibility */ |
714 | u_char inpm_type; /* message type */ |
715 | struct in6_addr inpm_prefix; |
716 | u_int32_t prm_vltim; |
717 | u_int32_t prm_pltime; |
718 | u_int32_t prm_expire; |
719 | u_int32_t prm_preferred; |
720 | struct in6_prflags prm_flags; |
721 | u_short prm_index; /* index for associated ifp */ |
722 | u_char prm_plen; /* length of prefix in bits */ |
723 | }; |
724 | |
725 | #define prm_raf_onlink prm_flags.prf_ra.onlink |
726 | #define prm_raf_auto prm_flags.prf_ra.autonomous |
727 | |
728 | #define prm_statef_onlink prm_flags.prf_state.onlink |
729 | |
730 | #define prm_rrf_decrvalid prm_flags.prf_rr.decrvalid |
731 | #define prm_rrf_decrprefd prm_flags.prf_rr.decrprefd |
732 | |
733 | struct nd_pfxrouter { |
734 | LIST_ENTRY(nd_pfxrouter) pfr_entry; |
735 | #define pfr_next pfr_entry.le_next |
736 | struct nd_defrouter *router; |
737 | }; |
738 | |
739 | LIST_HEAD(nd_prhead, nd_prefix); |
740 | |
741 | struct nd_prefix_list { |
742 | struct nd_prefix_list *next; |
743 | struct nd_prefix pr; |
744 | }; |
745 | #endif /* BSD_KERNEL_PRIVATE */ |
746 | |
747 | #if defined(PRIVATE) |
748 | struct kev_nd6_ndfailure { |
749 | struct net_event_data link_data; |
750 | }; |
751 | |
752 | struct kev_nd6_ndalive { |
753 | struct net_event_data link_data; |
754 | }; |
755 | |
756 | struct nd6_ra_prefix { |
757 | struct sockaddr_in6 prefix; |
758 | struct prf_ra raflags; |
759 | u_int32_t prefixlen; |
760 | u_int32_t origin; |
761 | u_int64_t vltime; |
762 | u_int64_t pltime; |
763 | u_int64_t expire; |
764 | u_int32_t flags; |
765 | u_int32_t refcnt; |
766 | u_int32_t if_index; |
767 | u_int32_t pad; |
768 | }; |
769 | |
770 | /* ND6 router advertisement valid bits */ |
771 | #define KEV_ND6_DATA_VALID_MTU (0x1 << 0) |
772 | #define KEV_ND6_DATA_VALID_PREFIX (0x1 << 1) |
773 | |
774 | struct kev_nd6_ra_data { |
775 | u_int32_t mtu; |
776 | u_int32_t list_index; |
777 | u_int32_t list_length; |
778 | u_int32_t flags; |
779 | struct nd6_ra_prefix prefix; |
780 | u_int32_t pad; |
781 | }; |
782 | |
783 | struct kev_nd6_event { |
784 | struct net_event_data link_data; |
785 | struct in6_addr in6_address; |
786 | uint32_t val; |
787 | }; |
788 | |
789 | struct nd6_lookup_ipv6_args { |
790 | char ifname[IFNAMSIZ]; |
791 | struct sockaddr_in6 ip6_dest; |
792 | u_int32_t ll_dest_len; |
793 | union { |
794 | char buffer[256]; |
795 | struct sockaddr_dl _sdl; |
796 | } ll_dest_; |
797 | }; |
798 | #define ll_dest_sdl ll_dest_._sdl |
799 | |
800 | #endif /* PRIVATE */ |
801 | |
802 | #if defined(BSD_KERNEL_PRIVATE) |
803 | /* nd6.c */ |
804 | extern int nd6_prune; |
805 | extern int nd6_prune_lazy; |
806 | extern int nd6_delay; |
807 | extern int nd6_umaxtries; |
808 | extern int nd6_mmaxtries; |
809 | extern int nd6_useloopback; |
810 | extern int nd6_accept_6to4; |
811 | extern int nd6_maxnudhint; |
812 | extern int nd6_gctimer; |
813 | extern struct llinfo_nd6 llinfo_nd6; |
814 | extern struct nd_drhead nd_defrouter_list; |
815 | extern struct nd_rtihead nd_rti_list; |
816 | extern struct nd_prhead nd_prefix; |
817 | extern int nd6_debug; |
818 | extern int nd6_onlink_ns_rfc4861; |
819 | extern int nd6_optimistic_dad; |
820 | |
821 | #include <os/log.h> |
822 | |
823 | #define nd6log0(type, ...) do { os_log_##type(OS_LOG_DEFAULT, __VA_ARGS__); } while (0) |
824 | #define nd6log(type, ...) do { if (nd6_debug >= 1) os_log_##type(OS_LOG_DEFAULT, __VA_ARGS__); } while (0) |
825 | #define nd6log2(type, ...) do { if (nd6_debug >= 2) os_log_##type(OS_LOG_DEFAULT, __VA_ARGS__); } while (0) |
826 | |
827 | #define ND6_OPTIMISTIC_DAD_LINKLOCAL (1 << 0) |
828 | #define ND6_OPTIMISTIC_DAD_AUTOCONF (1 << 1) |
829 | #define ND6_OPTIMISTIC_DAD_TEMPORARY (1 << 2) |
830 | #define ND6_OPTIMISTIC_DAD_DYNAMIC (1 << 3) |
831 | #define ND6_OPTIMISTIC_DAD_SECURED (1 << 4) |
832 | #define ND6_OPTIMISTIC_DAD_MANUAL (1 << 5) |
833 | |
834 | #define ND6_OPTIMISTIC_DAD_DEFAULT \ |
835 | (ND6_OPTIMISTIC_DAD_LINKLOCAL | ND6_OPTIMISTIC_DAD_AUTOCONF | \ |
836 | ND6_OPTIMISTIC_DAD_TEMPORARY | ND6_OPTIMISTIC_DAD_DYNAMIC | \ |
837 | ND6_OPTIMISTIC_DAD_SECURED | ND6_OPTIMISTIC_DAD_MANUAL) |
838 | |
839 | /* nd6_rtr.c */ |
840 | extern int nd6_defifindex; |
841 | extern int ip6_desync_factor; /* seconds */ |
842 | /* ND6_INFINITE_LIFETIME does not apply to temporary addresses */ |
843 | extern u_int32_t ip6_temp_preferred_lifetime; /* seconds */ |
844 | extern u_int32_t ip6_temp_valid_lifetime; /* seconds */ |
845 | extern int ip6_temp_regen_advance; /* seconds */ |
846 | |
847 | union nd_opts { |
848 | struct nd_opt_hdr *nd_opt_array[26]; /* max = Route information option */ |
849 | struct { |
850 | struct nd_opt_hdr *zero; |
851 | struct nd_opt_hdr *src_lladdr; |
852 | struct nd_opt_hdr *tgt_lladdr; |
853 | struct nd_opt_prefix_info *pi_beg; /* multiple opts, start */ |
854 | struct nd_opt_rd_hdr *rh; |
855 | struct nd_opt_mtu *mtu; |
856 | struct nd_opt_hdr *__res6; |
857 | struct nd_opt_hdr *__res7; |
858 | struct nd_opt_hdr *__res8; |
859 | struct nd_opt_hdr *__res9; |
860 | struct nd_opt_hdr *__res10; |
861 | struct nd_opt_hdr *__res11; |
862 | struct nd_opt_hdr *__res12; |
863 | struct nd_opt_hdr *__res13; |
864 | struct nd_opt_nonce *nonce; |
865 | struct nd_opt_hdr *__res15; |
866 | struct nd_opt_hdr *__res16; |
867 | struct nd_opt_hdr *__res17; |
868 | struct nd_opt_hdr *__res18; |
869 | struct nd_opt_hdr *__res19; |
870 | struct nd_opt_hdr *__res20; |
871 | struct nd_opt_hdr *__res21; |
872 | struct nd_opt_hdr *__res22; |
873 | struct nd_opt_hdr *__res23; |
874 | struct nd_opt_route_info *rti_beg; |
875 | struct nd_opt_hdr *__res25; |
876 | struct nd_opt_hdr *search; /* multiple opts */ |
877 | struct nd_opt_hdr *last; /* multiple opts */ |
878 | int done; |
879 | struct nd_opt_prefix_info *pi_end; /* multiple prefix opts, end */ |
880 | struct nd_opt_route_info *rti_end; /* multiple route info opts, end */ |
881 | } nd_opt_each; |
882 | }; |
883 | #define nd_opts_src_lladdr nd_opt_each.src_lladdr |
884 | #define nd_opts_tgt_lladdr nd_opt_each.tgt_lladdr |
885 | #define nd_opts_pi nd_opt_each.pi_beg |
886 | #define nd_opts_pi_end nd_opt_each.pi_end |
887 | #define nd_opts_rh nd_opt_each.rh |
888 | #define nd_opts_mtu nd_opt_each.mtu |
889 | #define nd_opts_nonce nd_opt_each.nonce |
890 | #define nd_opts_rti nd_opt_each.rti_beg |
891 | #define nd_opts_rti_end nd_opt_each.rti_end |
892 | #define nd_opts_search nd_opt_each.search |
893 | #define nd_opts_last nd_opt_each.last |
894 | #define nd_opts_done nd_opt_each.done |
895 | |
896 | /* XXX: need nd6_var.h?? */ |
897 | /* nd6.c */ |
898 | extern int nd6_sched_timeout_want; |
899 | extern void nd6_sched_timeout(struct timeval *, struct timeval *); |
900 | extern void nd6_init(void); |
901 | extern void nd6_ifreset(struct ifnet *ifp); |
902 | extern void nd6_ifattach(struct ifnet *); |
903 | extern int nd6_is_addr_neighbor(struct sockaddr_in6 *, struct ifnet *, int); |
904 | extern void nd6_option_init(void *, int, union nd_opts *); |
905 | extern struct nd_opt_hdr *nd6_option(union nd_opts *); |
906 | extern int nd6_options(union nd_opts *); |
907 | extern struct rtentry *nd6_lookup(struct in6_addr *, int, struct ifnet *, int); |
908 | extern void nd6_setmtu(struct ifnet *); |
909 | extern void nd6_purge(struct ifnet *); |
910 | extern void nd6_free(struct rtentry *); |
911 | extern void nd6_nud_hint(struct rtentry *, struct in6_addr *, int); |
912 | extern int nd6_resolve(struct ifnet *, struct rtentry *, |
913 | struct mbuf *, struct sockaddr *, u_char *); |
914 | extern void nd6_rtrequest(int, struct rtentry *, struct sockaddr *); |
915 | extern int nd6_ioctl(u_long, caddr_t, struct ifnet *); |
916 | extern void nd6_cache_lladdr(struct ifnet *, struct in6_addr *, |
917 | char *, int, int, int, int *); |
918 | extern int nd6_output_list(struct ifnet *, struct ifnet *, struct mbuf *, |
919 | struct sockaddr_in6 *, struct rtentry *, struct flowadv *); |
920 | extern int nd6_output(struct ifnet *, struct ifnet *, struct mbuf *, |
921 | struct sockaddr_in6 *, struct rtentry *, struct flowadv *); |
922 | extern int nd6_storelladdr(struct ifnet *, struct rtentry *, struct mbuf *, |
923 | struct sockaddr *, u_char *); |
924 | extern int nd6_need_cache(struct ifnet *); |
925 | extern void nd6_drain(void *); |
926 | extern void nd6_post_msg(u_int32_t, struct nd_prefix_list *, u_int32_t, |
927 | u_int32_t); |
928 | extern int nd6_setifinfo(struct ifnet *, u_int32_t, u_int32_t); |
929 | extern const char *ndcache_state2str(short); |
930 | extern void ln_setexpire(struct llinfo_nd6 *, uint64_t); |
931 | |
932 | /* nd6_nbr.c */ |
933 | extern void nd6_nbr_init(void); |
934 | extern void nd6_na_input(struct mbuf *, int, int); |
935 | extern void nd6_na_output(struct ifnet *, const struct in6_addr *, |
936 | const struct in6_addr *, u_int32_t, int, struct sockaddr *); |
937 | extern void nd6_ns_input(struct mbuf *, int, int); |
938 | extern void nd6_ns_output(struct ifnet *, const struct in6_addr *, |
939 | const struct in6_addr *, struct llinfo_nd6 *, uint8_t *); |
940 | extern caddr_t nd6_ifptomac(struct ifnet *); |
941 | extern void nd6_dad_start(struct ifaddr *, int *); |
942 | extern void nd6_dad_stop(struct ifaddr *); |
943 | extern void nd6_llreach_alloc(struct rtentry *, struct ifnet *, void *, |
944 | unsigned int, boolean_t); |
945 | extern void nd6_llreach_set_reachable(struct ifnet *, void *, unsigned int); |
946 | extern void nd6_llreach_use(struct llinfo_nd6 *); |
947 | extern void nd6_alt_node_addr_decompose(struct ifnet *, struct sockaddr *, |
948 | struct sockaddr_dl *, struct sockaddr_in6 *); |
949 | extern int nd6_alt_node_present(struct ifnet *, struct sockaddr_in6 *, |
950 | struct sockaddr_dl *, int32_t, int, int); |
951 | extern int nd6_alt_node_absent(struct ifnet *, struct sockaddr_in6 *, struct sockaddr_dl *); |
952 | |
953 | /* nd6_rtr.c */ |
954 | extern struct in6_ifaddr *in6_pfx_newpersistaddr(struct nd_prefix *, int, |
955 | int *, boolean_t, uint8_t); |
956 | extern void nd6_rtr_init(void); |
957 | extern void nd6_rs_input(struct mbuf *, int, int); |
958 | extern void nd6_ra_input(struct mbuf *, int, int); |
959 | extern void prelist_del(struct nd_prefix *); |
960 | extern struct nd_defrouter *defrtrlist_update(struct nd_defrouter *, |
961 | struct nd_drhead *); |
962 | extern void defrouter_select(struct ifnet *, struct nd_drhead *); |
963 | extern void defrouter_reset(void); |
964 | extern int defrtrlist_ioctl(u_long, caddr_t); |
965 | extern void defrtrlist_del(struct nd_defrouter *, struct nd_drhead *); |
966 | extern int defrtrlist_add_static(struct nd_defrouter *); |
967 | extern int defrtrlist_del_static(struct nd_defrouter *); |
968 | extern void prelist_remove(struct nd_prefix *); |
969 | extern int prelist_update(struct nd_prefix *, struct nd_defrouter *, |
970 | struct mbuf *, int); |
971 | extern int nd6_prelist_add(struct nd_prefix *, struct nd_defrouter *, |
972 | struct nd_prefix **, boolean_t); |
973 | extern int nd6_prefix_onlink(struct nd_prefix *); |
974 | extern int nd6_prefix_onlink_scoped(struct nd_prefix *, unsigned int); |
975 | extern int nd6_prefix_offlink(struct nd_prefix *); |
976 | extern void pfxlist_onlink_check(void); |
977 | extern void defrouter_set_reachability(struct in6_addr *, struct ifnet *, boolean_t); |
978 | extern struct nd_defrouter *defrouter_lookup(struct nd_drhead *, |
979 | struct in6_addr *, struct ifnet *); |
980 | extern struct nd_pfxrouter *pfxrtr_lookup(struct nd_prefix *, struct nd_defrouter *); |
981 | extern struct nd_prefix *nd6_prefix_lookup(struct nd_prefix *, int); |
982 | extern int in6_init_prefix_ltimes(struct nd_prefix *ndpr); |
983 | extern void rt6_flush(struct in6_addr *, struct ifnet *); |
984 | extern int nd6_setdefaultiface(int); |
985 | extern int in6_tmpifadd(const struct in6_ifaddr *, int); |
986 | extern void nddr_addref(struct nd_defrouter *); |
987 | extern struct nd_defrouter *nddr_remref(struct nd_defrouter *); |
988 | extern uint64_t nddr_getexpire(struct nd_defrouter *); |
989 | extern void ndpr_addref(struct nd_prefix *); |
990 | extern struct nd_prefix *ndpr_remref(struct nd_prefix *); |
991 | extern uint64_t ndpr_getexpire(struct nd_prefix *); |
992 | |
993 | /* nd6_prproxy.c */ |
994 | struct ip6_hdr; |
995 | extern u_int32_t nd6_prproxy; |
996 | extern int nd6_if_prproxy(struct ifnet *, boolean_t); |
997 | extern void nd6_prproxy_prelist_update(struct nd_prefix *, struct nd_prefix *); |
998 | extern boolean_t nd6_prproxy_ifaddr(struct in6_ifaddr *); |
999 | extern void nd6_proxy_find_fwdroute(struct ifnet *, struct route_in6 *); |
1000 | extern boolean_t nd6_prproxy_isours(struct mbuf *, struct ip6_hdr *, |
1001 | struct route_in6 *, unsigned int); |
1002 | extern void nd6_prproxy_ns_output(struct ifnet *, struct ifnet *, |
1003 | struct in6_addr *, struct in6_addr *, struct llinfo_nd6 *); |
1004 | extern void nd6_prproxy_ns_input(struct ifnet *, struct in6_addr *, |
1005 | char *, int, struct in6_addr *, struct in6_addr *, uint8_t *nonce); |
1006 | extern void nd6_prproxy_na_input(struct ifnet *, struct in6_addr *, |
1007 | struct in6_addr *, struct in6_addr *, int); |
1008 | extern void nd6_prproxy_sols_reap(struct nd_prefix *); |
1009 | extern void nd6_prproxy_sols_prune(struct nd_prefix *, u_int32_t); |
1010 | extern int nd6_if_disable(struct ifnet *, boolean_t); |
1011 | void in6_ifaddr_set_dadprogress(struct in6_ifaddr *ia); |
1012 | #endif /* BSD_KERNEL_PRIVATE */ |
1013 | |
1014 | #ifdef KERNEL |
1015 | |
1016 | /* |
1017 | * @function nd6_lookup_ipv6 |
1018 | * @discussion This function will check the routing table for a cached |
1019 | * neighbor discovery entry or trigger an neighbor discovery query |
1020 | * to resolve the IPv6 address to a link-layer address. |
1021 | * nd entries are stored in the routing table. This function will |
1022 | * lookup the IPv6 destination in the routing table. If the |
1023 | * destination requires forwarding to a gateway, the route of the |
1024 | * gateway will be looked up. The route entry is inspected to |
1025 | * determine if the link layer destination address is known. If |
1026 | * unknown, neighbor discovery will be used to resolve the entry. |
1027 | * @param interface The interface the packet is being sent on. |
1028 | * @param ip6_dest The IPv6 destination of the packet. |
1029 | * @param ll_dest On output, the link-layer destination. |
1030 | * @param ll_dest_len The length of the buffer for ll_dest. |
1031 | * @param hint Any routing hint passed down from the protocol. |
1032 | * @param packet The packet being transmitted. |
1033 | * @result May return an error such as EHOSTDOWN or ENETUNREACH. If |
1034 | * this function returns EJUSTRETURN, the packet has been queued |
1035 | * and will be sent when the address is resolved. If any other |
1036 | * value is returned, the caller is responsible for disposing of |
1037 | * the packet. |
1038 | */ |
1039 | extern errno_t nd6_lookup_ipv6(ifnet_t interface, |
1040 | const struct sockaddr_in6 *ip6_dest, struct sockaddr_dl *ll_dest, |
1041 | size_t ll_dest_len, route_t hint, mbuf_t packet); |
1042 | |
1043 | #endif /* KERNEL */ |
1044 | |
1045 | /* nd6_send.c */ |
1046 | #ifdef BSD_KERNEL_PRIVATE |
1047 | /* |
1048 | * nd6_send_opmode |
1049 | * |
1050 | * value using CGA tx SEND rx SEND |
1051 | * -------- --------- ------- ------- |
1052 | * DISABLED NO NO NO |
1053 | * QUIET YES NO NO |
1054 | */ |
1055 | extern int nd6_send_opstate; |
1056 | |
1057 | #define ND6_SEND_OPMODE_DISABLED 0 |
1058 | #define ND6_SEND_OPMODE_CGA_QUIET 1 |
1059 | |
1060 | #endif /* BSD_KERNEL_PRIVATE */ |
1061 | #endif /* _NETINET6_ND6_H_ */ |
1062 | |