1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2001 Daniel Hartmeier
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 *
11 * - Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * - Redistributions in binary form must reproduce the above
14 * copyright notice, this list of conditions and the following
15 * disclaimer in the documentation and/or other materials provided
16 * with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
21 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
22 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
24 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
25 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
26 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
28 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 *
31 * $OpenBSD: pfvar.h,v 1.282 2009/01/29 15:12:28 pyr Exp $
32 */
33
34 #ifndef _NET_PFVAR_H_
35 #define _NET_PFVAR_H_
36
37 #include <sys/param.h>
38 #include <sys/queue.h>
39 #include <sys/counter.h>
40 #include <sys/cpuset.h>
41 #include <sys/epoch.h>
42 #include <sys/malloc.h>
43 #include <sys/nv.h>
44 #include <sys/refcount.h>
45 #include <sys/sdt.h>
46 #include <sys/sysctl.h>
47 #include <sys/smp.h>
48 #include <sys/lock.h>
49 #include <sys/rmlock.h>
50 #include <sys/tree.h>
51 #include <sys/seqc.h>
52 #include <vm/uma.h>
53
54 #include <net/if.h>
55 #include <net/ethernet.h>
56 #include <net/radix.h>
57 #include <netinet/in.h>
58 #ifdef _KERNEL
59 #include <netinet/ip.h>
60 #include <netinet/tcp.h>
61 #include <netinet/udp.h>
62 #include <netinet/sctp.h>
63 #include <netinet/ip_icmp.h>
64 #include <netinet/icmp6.h>
65 #endif
66
67 #include <netpfil/pf/pf.h>
68 #include <netpfil/pf/pf_altq.h>
69 #include <netpfil/pf/pf_mtag.h>
70
71 #ifdef _KERNEL
72
73 #define PF_PFIL_NOREFRAGMENT 0x80000000
74
75 #if defined(__arm__)
76 #define PF_WANT_32_TO_64_COUNTER
77 #endif
78
79 /*
80 * A hybrid of 32-bit and 64-bit counters which can be used on platforms where
81 * counter(9) is very expensive.
82 *
83 * As 32-bit counters are expected to overflow, a periodic job sums them up to
84 * a saved 64-bit state. Fetching the value still walks all CPUs to get the most
85 * current snapshot.
86 */
87 #ifdef PF_WANT_32_TO_64_COUNTER
88 struct pf_counter_u64_pcpu {
89 u_int32_t current;
90 u_int32_t snapshot;
91 };
92
93 struct pf_counter_u64 {
94 struct pf_counter_u64_pcpu *pfcu64_pcpu;
95 u_int64_t pfcu64_value;
96 seqc_t pfcu64_seqc;
97 };
98
99 static inline int
pf_counter_u64_init(struct pf_counter_u64 * pfcu64,int flags)100 pf_counter_u64_init(struct pf_counter_u64 *pfcu64, int flags)
101 {
102
103 pfcu64->pfcu64_value = 0;
104 pfcu64->pfcu64_seqc = 0;
105 pfcu64->pfcu64_pcpu = uma_zalloc_pcpu(pcpu_zone_8, flags | M_ZERO);
106 if (__predict_false(pfcu64->pfcu64_pcpu == NULL))
107 return (ENOMEM);
108 return (0);
109 }
110
111 static inline void
pf_counter_u64_deinit(struct pf_counter_u64 * pfcu64)112 pf_counter_u64_deinit(struct pf_counter_u64 *pfcu64)
113 {
114
115 uma_zfree_pcpu(pcpu_zone_8, pfcu64->pfcu64_pcpu);
116 }
117
118 static inline void
pf_counter_u64_critical_enter(void)119 pf_counter_u64_critical_enter(void)
120 {
121
122 critical_enter();
123 }
124
125 static inline void
pf_counter_u64_critical_exit(void)126 pf_counter_u64_critical_exit(void)
127 {
128
129 critical_exit();
130 }
131
132 static inline void
pf_counter_u64_rollup_protected(struct pf_counter_u64 * pfcu64,uint64_t n)133 pf_counter_u64_rollup_protected(struct pf_counter_u64 *pfcu64, uint64_t n)
134 {
135
136 MPASS(curthread->td_critnest > 0);
137 pfcu64->pfcu64_value += n;
138 }
139
140 static inline void
pf_counter_u64_add_protected(struct pf_counter_u64 * pfcu64,uint32_t n)141 pf_counter_u64_add_protected(struct pf_counter_u64 *pfcu64, uint32_t n)
142 {
143 struct pf_counter_u64_pcpu *pcpu;
144 u_int32_t val;
145
146 MPASS(curthread->td_critnest > 0);
147 pcpu = zpcpu_get(pfcu64->pfcu64_pcpu);
148 val = atomic_load_int(&pcpu->current);
149 atomic_store_int(&pcpu->current, val + n);
150 }
151
152 static inline void
pf_counter_u64_add(struct pf_counter_u64 * pfcu64,uint32_t n)153 pf_counter_u64_add(struct pf_counter_u64 *pfcu64, uint32_t n)
154 {
155
156 critical_enter();
157 pf_counter_u64_add_protected(pfcu64, n);
158 critical_exit();
159 }
160
161 static inline u_int64_t
pf_counter_u64_periodic(struct pf_counter_u64 * pfcu64)162 pf_counter_u64_periodic(struct pf_counter_u64 *pfcu64)
163 {
164 struct pf_counter_u64_pcpu *pcpu;
165 u_int64_t sum;
166 u_int32_t val;
167 int cpu;
168
169 MPASS(curthread->td_critnest > 0);
170 seqc_write_begin(&pfcu64->pfcu64_seqc);
171 sum = pfcu64->pfcu64_value;
172 CPU_FOREACH(cpu) {
173 pcpu = zpcpu_get_cpu(pfcu64->pfcu64_pcpu, cpu);
174 val = atomic_load_int(&pcpu->current);
175 sum += (uint32_t)(val - pcpu->snapshot);
176 pcpu->snapshot = val;
177 }
178 pfcu64->pfcu64_value = sum;
179 seqc_write_end(&pfcu64->pfcu64_seqc);
180 return (sum);
181 }
182
183 static inline u_int64_t
pf_counter_u64_fetch(const struct pf_counter_u64 * pfcu64)184 pf_counter_u64_fetch(const struct pf_counter_u64 *pfcu64)
185 {
186 struct pf_counter_u64_pcpu *pcpu;
187 u_int64_t sum;
188 seqc_t seqc;
189 int cpu;
190
191 for (;;) {
192 seqc = seqc_read(&pfcu64->pfcu64_seqc);
193 sum = 0;
194 CPU_FOREACH(cpu) {
195 pcpu = zpcpu_get_cpu(pfcu64->pfcu64_pcpu, cpu);
196 sum += (uint32_t)(atomic_load_int(&pcpu->current) -pcpu->snapshot);
197 }
198 sum += pfcu64->pfcu64_value;
199 if (seqc_consistent(&pfcu64->pfcu64_seqc, seqc))
200 break;
201 }
202 return (sum);
203 }
204
205 static inline void
pf_counter_u64_zero_protected(struct pf_counter_u64 * pfcu64)206 pf_counter_u64_zero_protected(struct pf_counter_u64 *pfcu64)
207 {
208 struct pf_counter_u64_pcpu *pcpu;
209 int cpu;
210
211 MPASS(curthread->td_critnest > 0);
212 seqc_write_begin(&pfcu64->pfcu64_seqc);
213 CPU_FOREACH(cpu) {
214 pcpu = zpcpu_get_cpu(pfcu64->pfcu64_pcpu, cpu);
215 pcpu->snapshot = atomic_load_int(&pcpu->current);
216 }
217 pfcu64->pfcu64_value = 0;
218 seqc_write_end(&pfcu64->pfcu64_seqc);
219 }
220
221 static inline void
pf_counter_u64_zero(struct pf_counter_u64 * pfcu64)222 pf_counter_u64_zero(struct pf_counter_u64 *pfcu64)
223 {
224
225 critical_enter();
226 pf_counter_u64_zero_protected(pfcu64);
227 critical_exit();
228 }
229 #else
230 struct pf_counter_u64 {
231 counter_u64_t counter;
232 };
233
234 static inline int
pf_counter_u64_init(struct pf_counter_u64 * pfcu64,int flags)235 pf_counter_u64_init(struct pf_counter_u64 *pfcu64, int flags)
236 {
237
238 pfcu64->counter = counter_u64_alloc(flags);
239 if (__predict_false(pfcu64->counter == NULL))
240 return (ENOMEM);
241 return (0);
242 }
243
244 static inline void
pf_counter_u64_deinit(struct pf_counter_u64 * pfcu64)245 pf_counter_u64_deinit(struct pf_counter_u64 *pfcu64)
246 {
247
248 counter_u64_free(pfcu64->counter);
249 }
250
251 static inline void
pf_counter_u64_critical_enter(void)252 pf_counter_u64_critical_enter(void)
253 {
254
255 }
256
257 static inline void
pf_counter_u64_critical_exit(void)258 pf_counter_u64_critical_exit(void)
259 {
260
261 }
262
263 static inline void
pf_counter_u64_rollup_protected(struct pf_counter_u64 * pfcu64,uint64_t n)264 pf_counter_u64_rollup_protected(struct pf_counter_u64 *pfcu64, uint64_t n)
265 {
266
267 counter_u64_add(pfcu64->counter, n);
268 }
269
270 static inline void
pf_counter_u64_add_protected(struct pf_counter_u64 * pfcu64,uint32_t n)271 pf_counter_u64_add_protected(struct pf_counter_u64 *pfcu64, uint32_t n)
272 {
273
274 counter_u64_add(pfcu64->counter, n);
275 }
276
277 static inline void
pf_counter_u64_add(struct pf_counter_u64 * pfcu64,uint32_t n)278 pf_counter_u64_add(struct pf_counter_u64 *pfcu64, uint32_t n)
279 {
280
281 pf_counter_u64_add_protected(pfcu64, n);
282 }
283
284 static inline u_int64_t
pf_counter_u64_fetch(const struct pf_counter_u64 * pfcu64)285 pf_counter_u64_fetch(const struct pf_counter_u64 *pfcu64)
286 {
287
288 return (counter_u64_fetch(pfcu64->counter));
289 }
290
291 static inline void
pf_counter_u64_zero_protected(struct pf_counter_u64 * pfcu64)292 pf_counter_u64_zero_protected(struct pf_counter_u64 *pfcu64)
293 {
294
295 counter_u64_zero(pfcu64->counter);
296 }
297
298 static inline void
pf_counter_u64_zero(struct pf_counter_u64 * pfcu64)299 pf_counter_u64_zero(struct pf_counter_u64 *pfcu64)
300 {
301
302 pf_counter_u64_zero_protected(pfcu64);
303 }
304 #endif
305
306 #define pf_get_timestamp(prule)({ \
307 uint32_t _ts = 0; \
308 uint32_t __ts; \
309 int cpu; \
310 CPU_FOREACH(cpu) { \
311 __ts = *zpcpu_get_cpu(prule->timestamp, cpu); \
312 if (__ts > _ts) \
313 _ts = __ts; \
314 } \
315 _ts; \
316 })
317
318 #define pf_update_timestamp(prule) \
319 do { \
320 critical_enter(); \
321 *zpcpu_get((prule)->timestamp) = time_second; \
322 critical_exit(); \
323 } while (0)
324
325 #define pf_timestamp_pcpu_zone (sizeof(time_t) == 4 ? pcpu_zone_4 : pcpu_zone_8)
326 _Static_assert(sizeof(time_t) == 4 || sizeof(time_t) == 8, "unexpected time_t size");
327
328 SYSCTL_DECL(_net_pf);
329 MALLOC_DECLARE(M_PFHASH);
330 MALLOC_DECLARE(M_PF_RULE_ITEM);
331
332 SDT_PROVIDER_DECLARE(pf);
333
334 struct pfi_dynaddr {
335 TAILQ_ENTRY(pfi_dynaddr) entry;
336 struct pf_addr pfid_addr4;
337 struct pf_addr pfid_mask4;
338 struct pf_addr pfid_addr6;
339 struct pf_addr pfid_mask6;
340 struct pfr_ktable *pfid_kt;
341 struct pfi_kkif *pfid_kif;
342 int pfid_net; /* mask or 128 */
343 int pfid_acnt4; /* address count IPv4 */
344 int pfid_acnt6; /* address count IPv6 */
345 sa_family_t pfid_af; /* rule af */
346 u_int8_t pfid_iflags; /* PFI_AFLAG_* */
347 };
348
349 /*
350 * Address manipulation macros
351 */
352 #define HTONL(x) (x) = htonl((__uint32_t)(x))
353 #define HTONS(x) (x) = htons((__uint16_t)(x))
354 #define NTOHL(x) (x) = ntohl((__uint32_t)(x))
355 #define NTOHS(x) (x) = ntohs((__uint16_t)(x))
356
357 #define PF_NAME "pf"
358
359 #define PF_HASHROW_ASSERT(h) mtx_assert(&(h)->lock, MA_OWNED)
360 #define PF_HASHROW_LOCK(h) mtx_lock(&(h)->lock)
361 #define PF_HASHROW_UNLOCK(h) mtx_unlock(&(h)->lock)
362
363 #ifdef INVARIANTS
364 #define PF_STATE_LOCK(s) \
365 do { \
366 struct pf_kstate *_s = (s); \
367 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(_s)]; \
368 MPASS(_s->lock == &_ih->lock); \
369 mtx_lock(_s->lock); \
370 } while (0)
371 #define PF_STATE_UNLOCK(s) \
372 do { \
373 struct pf_kstate *_s = (s); \
374 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(_s)]; \
375 MPASS(_s->lock == &_ih->lock); \
376 mtx_unlock(_s->lock); \
377 } while (0)
378 #else
379 #define PF_STATE_LOCK(s) mtx_lock((s)->lock)
380 #define PF_STATE_UNLOCK(s) mtx_unlock((s)->lock)
381 #endif
382
383 #ifdef INVARIANTS
384 #define PF_STATE_LOCK_ASSERT(s) \
385 do { \
386 struct pf_kstate *_s = (s); \
387 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(_s)]; \
388 MPASS(_s->lock == &_ih->lock); \
389 PF_HASHROW_ASSERT(_ih); \
390 } while (0)
391 #else /* !INVARIANTS */
392 #define PF_STATE_LOCK_ASSERT(s) do {} while (0)
393 #endif /* INVARIANTS */
394
395 #ifdef INVARIANTS
396 #define PF_SRC_NODE_LOCK(sn) \
397 do { \
398 struct pf_ksrc_node *_sn = (sn); \
399 struct pf_srchash *_sh = &V_pf_srchash[ \
400 pf_hashsrc(&_sn->addr, _sn->af)]; \
401 MPASS(_sn->lock == &_sh->lock); \
402 mtx_lock(_sn->lock); \
403 } while (0)
404 #define PF_SRC_NODE_UNLOCK(sn) \
405 do { \
406 struct pf_ksrc_node *_sn = (sn); \
407 struct pf_srchash *_sh = &V_pf_srchash[ \
408 pf_hashsrc(&_sn->addr, _sn->af)]; \
409 MPASS(_sn->lock == &_sh->lock); \
410 mtx_unlock(_sn->lock); \
411 } while (0)
412 #else
413 #define PF_SRC_NODE_LOCK(sn) mtx_lock((sn)->lock)
414 #define PF_SRC_NODE_UNLOCK(sn) mtx_unlock((sn)->lock)
415 #endif
416
417 #ifdef INVARIANTS
418 #define PF_SRC_NODE_LOCK_ASSERT(sn) \
419 do { \
420 struct pf_ksrc_node *_sn = (sn); \
421 struct pf_srchash *_sh = &V_pf_srchash[ \
422 pf_hashsrc(&_sn->addr, _sn->af)]; \
423 MPASS(_sn->lock == &_sh->lock); \
424 PF_HASHROW_ASSERT(_sh); \
425 } while (0)
426 #else /* !INVARIANTS */
427 #define PF_SRC_NODE_LOCK_ASSERT(sn) do {} while (0)
428 #endif /* INVARIANTS */
429
430 extern struct mtx_padalign pf_unlnkdrules_mtx;
431 #define PF_UNLNKDRULES_LOCK() mtx_lock(&pf_unlnkdrules_mtx)
432 #define PF_UNLNKDRULES_UNLOCK() mtx_unlock(&pf_unlnkdrules_mtx)
433 #define PF_UNLNKDRULES_ASSERT() mtx_assert(&pf_unlnkdrules_mtx, MA_OWNED)
434
435 extern struct sx pf_config_lock;
436 #define PF_CONFIG_LOCK() sx_xlock(&pf_config_lock)
437 #define PF_CONFIG_UNLOCK() sx_xunlock(&pf_config_lock)
438 #define PF_CONFIG_ASSERT() sx_assert(&pf_config_lock, SA_XLOCKED)
439
440 VNET_DECLARE(struct rmlock, pf_rules_lock);
441 #define V_pf_rules_lock VNET(pf_rules_lock)
442
443 #define PF_RULES_RLOCK_TRACKER struct rm_priotracker _pf_rules_tracker
444 #define PF_RULES_RLOCK() rm_rlock(&V_pf_rules_lock, &_pf_rules_tracker)
445 #define PF_RULES_RUNLOCK() rm_runlock(&V_pf_rules_lock, &_pf_rules_tracker)
446 #define PF_RULES_WLOCK() rm_wlock(&V_pf_rules_lock)
447 #define PF_RULES_WUNLOCK() rm_wunlock(&V_pf_rules_lock)
448 #define PF_RULES_WOWNED() rm_wowned(&V_pf_rules_lock)
449 #define PF_RULES_ASSERT() rm_assert(&V_pf_rules_lock, RA_LOCKED)
450 #define PF_RULES_RASSERT() rm_assert(&V_pf_rules_lock, RA_RLOCKED)
451 #define PF_RULES_WASSERT() rm_assert(&V_pf_rules_lock, RA_WLOCKED)
452
453 extern struct mtx_padalign pf_table_stats_lock;
454 #define PF_TABLE_STATS_LOCK() mtx_lock(&pf_table_stats_lock)
455 #define PF_TABLE_STATS_UNLOCK() mtx_unlock(&pf_table_stats_lock)
456 #define PF_TABLE_STATS_OWNED() mtx_owned(&pf_table_stats_lock)
457 #define PF_TABLE_STATS_ASSERT() mtx_assert(&pf_table_stats_lock, MA_OWNED)
458
459 extern struct sx pf_end_lock;
460
461 #define PF_MODVER 1
462 #define PFLOG_MODVER 1
463 #define PFSYNC_MODVER 1
464
465 #define PFLOG_MINVER 1
466 #define PFLOG_PREFVER PFLOG_MODVER
467 #define PFLOG_MAXVER 1
468 #define PFSYNC_MINVER 1
469 #define PFSYNC_PREFVER PFSYNC_MODVER
470 #define PFSYNC_MAXVER 1
471
472 #ifdef INET
473 #ifndef INET6
474 #define PF_INET_ONLY
475 #endif /* ! INET6 */
476 #endif /* INET */
477
478 #ifdef INET6
479 #ifndef INET
480 #define PF_INET6_ONLY
481 #endif /* ! INET */
482 #endif /* INET6 */
483
484 #ifdef INET
485 #ifdef INET6
486 #define PF_INET_INET6
487 #endif /* INET6 */
488 #endif /* INET */
489
490 #else
491
492 #define PF_INET_INET6
493
494 #endif /* _KERNEL */
495
496 /* Both IPv4 and IPv6 */
497 #ifdef PF_INET_INET6
498
499 #define PF_AEQ(a, b, c) \
500 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \
501 (c == AF_INET6 && (a)->addr32[3] == (b)->addr32[3] && \
502 (a)->addr32[2] == (b)->addr32[2] && \
503 (a)->addr32[1] == (b)->addr32[1] && \
504 (a)->addr32[0] == (b)->addr32[0])) \
505
506 #define PF_ANEQ(a, b, c) \
507 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \
508 (c == AF_INET6 && ((a)->addr32[0] != (b)->addr32[0] || \
509 (a)->addr32[1] != (b)->addr32[1] || \
510 (a)->addr32[2] != (b)->addr32[2] || \
511 (a)->addr32[3] != (b)->addr32[3]))) \
512
513 #define PF_AZERO(a, c) \
514 ((c == AF_INET && !(a)->addr32[0]) || \
515 (c == AF_INET6 && !(a)->addr32[0] && !(a)->addr32[1] && \
516 !(a)->addr32[2] && !(a)->addr32[3] )) \
517
518 #define PF_MATCHA(n, a, m, b, f) \
519 pf_match_addr(n, a, m, b, f)
520
521 #define PF_ACPY(a, b, f) \
522 pf_addrcpy(a, b, f)
523
524 #define PF_AINC(a, f) \
525 pf_addr_inc(a, f)
526
527 #define PF_POOLMASK(a, b, c, d, f) \
528 pf_poolmask(a, b, c, d, f)
529
530 #else
531
532 /* Just IPv6 */
533
534 #ifdef PF_INET6_ONLY
535
536 #define PF_AEQ(a, b, c) \
537 ((a)->addr32[3] == (b)->addr32[3] && \
538 (a)->addr32[2] == (b)->addr32[2] && \
539 (a)->addr32[1] == (b)->addr32[1] && \
540 (a)->addr32[0] == (b)->addr32[0]) \
541
542 #define PF_ANEQ(a, b, c) \
543 ((a)->addr32[3] != (b)->addr32[3] || \
544 (a)->addr32[2] != (b)->addr32[2] || \
545 (a)->addr32[1] != (b)->addr32[1] || \
546 (a)->addr32[0] != (b)->addr32[0]) \
547
548 #define PF_AZERO(a, c) \
549 (!(a)->addr32[0] && \
550 !(a)->addr32[1] && \
551 !(a)->addr32[2] && \
552 !(a)->addr32[3] ) \
553
554 #define PF_MATCHA(n, a, m, b, f) \
555 pf_match_addr(n, a, m, b, f)
556
557 #define PF_ACPY(a, b, f) \
558 pf_addrcpy(a, b, f)
559
560 #define PF_AINC(a, f) \
561 pf_addr_inc(a, f)
562
563 #define PF_POOLMASK(a, b, c, d, f) \
564 pf_poolmask(a, b, c, d, f)
565
566 #else
567
568 /* Just IPv4 */
569 #ifdef PF_INET_ONLY
570
571 #define PF_AEQ(a, b, c) \
572 ((a)->addr32[0] == (b)->addr32[0])
573
574 #define PF_ANEQ(a, b, c) \
575 ((a)->addr32[0] != (b)->addr32[0])
576
577 #define PF_AZERO(a, c) \
578 (!(a)->addr32[0])
579
580 #define PF_MATCHA(n, a, m, b, f) \
581 pf_match_addr(n, a, m, b, f)
582
583 #define PF_ACPY(a, b, f) \
584 (a)->v4.s_addr = (b)->v4.s_addr
585
586 #define PF_AINC(a, f) \
587 do { \
588 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \
589 } while (0)
590
591 #define PF_POOLMASK(a, b, c, d, f) \
592 do { \
593 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \
594 (((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \
595 } while (0)
596
597 #endif /* PF_INET_ONLY */
598 #endif /* PF_INET6_ONLY */
599 #endif /* PF_INET_INET6 */
600
601 /*
602 * XXX callers not FIB-aware in our version of pf yet.
603 * OpenBSD fixed it later it seems, 2010/05/07 13:33:16 claudio.
604 */
605 #define PF_MISMATCHAW(aw, x, af, neg, ifp, rtid) \
606 ( \
607 (((aw)->type == PF_ADDR_NOROUTE && \
608 pf_routable((x), (af), NULL, (rtid))) || \
609 (((aw)->type == PF_ADDR_URPFFAILED && (ifp) != NULL && \
610 pf_routable((x), (af), (ifp), (rtid))) || \
611 ((aw)->type == PF_ADDR_TABLE && \
612 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \
613 ((aw)->type == PF_ADDR_DYNIFTL && \
614 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \
615 ((aw)->type == PF_ADDR_RANGE && \
616 !pf_match_addr_range(&(aw)->v.a.addr, \
617 &(aw)->v.a.mask, (x), (af))) || \
618 ((aw)->type == PF_ADDR_ADDRMASK && \
619 !PF_AZERO(&(aw)->v.a.mask, (af)) && \
620 !PF_MATCHA(0, &(aw)->v.a.addr, \
621 &(aw)->v.a.mask, (x), (af))))) != \
622 (neg) \
623 )
624
625 #define PF_ALGNMNT(off) (((off) % 2) == 0)
626
627 /*
628 * At the moment there are no rules which have both NAT and RDR actions,
629 * apart from af-to rules, but those don't to source tracking for address
630 * translation. And the r->rdr pool is used for both NAT and RDR.
631 * So there is no PF_SN_RDR.
632 */
633 enum pf_sn_types { PF_SN_LIMIT, PF_SN_NAT, PF_SN_ROUTE, PF_SN_MAX };
634 typedef enum pf_sn_types pf_sn_types_t;
635 #define PF_SN_TYPE_NAMES { \
636 "limit source-track", \
637 "NAT/RDR sticky-address", \
638 "route sticky-address", \
639 NULL \
640 }
641
642 #ifdef _KERNEL
643
644 struct pf_kpooladdr {
645 struct pf_addr_wrap addr;
646 TAILQ_ENTRY(pf_kpooladdr) entries;
647 char ifname[IFNAMSIZ];
648 struct pfi_kkif *kif;
649 };
650
651 TAILQ_HEAD(pf_kpalist, pf_kpooladdr);
652
653 struct pf_kpool {
654 struct mtx mtx;
655 struct pf_kpalist list;
656 struct pf_kpooladdr *cur;
657 struct pf_poolhashkey key;
658 struct pf_addr counter;
659 struct pf_mape_portset mape;
660 int tblidx;
661 u_int16_t proxy_port[2];
662 u_int8_t opts;
663 };
664
665 struct pf_rule_actions {
666 struct pf_addr rt_addr;
667 struct pfi_kkif *rt_kif;
668 int32_t rtableid;
669 uint32_t flags;
670 uint16_t qid;
671 uint16_t pqid;
672 uint16_t max_mss;
673 uint16_t dnpipe;
674 uint16_t dnrpipe; /* Reverse direction pipe */
675 uint8_t log;
676 uint8_t set_tos;
677 uint8_t min_ttl;
678 uint8_t set_prio[2];
679 uint8_t rt;
680 };
681
682 union pf_keth_rule_ptr {
683 struct pf_keth_rule *ptr;
684 uint32_t nr;
685 };
686
687 struct pf_keth_rule_addr {
688 uint8_t addr[ETHER_ADDR_LEN];
689 uint8_t mask[ETHER_ADDR_LEN];
690 bool neg;
691 uint8_t isset;
692 };
693
694 struct pf_keth_anchor;
695
696 TAILQ_HEAD(pf_keth_ruleq, pf_keth_rule);
697
698 struct pf_keth_ruleset {
699 struct pf_keth_ruleq rules[2];
700 struct pf_keth_rules {
701 struct pf_keth_ruleq *rules;
702 int open;
703 uint32_t ticket;
704 } active, inactive;
705 struct vnet *vnet;
706 struct pf_keth_anchor *anchor;
707 };
708
709 RB_HEAD(pf_keth_anchor_global, pf_keth_anchor);
710 RB_HEAD(pf_keth_anchor_node, pf_keth_anchor);
711 struct pf_keth_anchor {
712 RB_ENTRY(pf_keth_anchor) entry_node;
713 RB_ENTRY(pf_keth_anchor) entry_global;
714 struct pf_keth_anchor *parent;
715 struct pf_keth_anchor_node children;
716 char name[PF_ANCHOR_NAME_SIZE];
717 char path[MAXPATHLEN];
718 struct pf_keth_ruleset ruleset;
719 int refcnt; /* anchor rules */
720 uint8_t anchor_relative;
721 uint8_t anchor_wildcard;
722 };
723 RB_PROTOTYPE(pf_keth_anchor_node, pf_keth_anchor, entry_node,
724 pf_keth_anchor_compare);
725 RB_PROTOTYPE(pf_keth_anchor_global, pf_keth_anchor, entry_global,
726 pf_keth_anchor_compare);
727
728 struct pf_keth_rule {
729 #define PFE_SKIP_IFP 0
730 #define PFE_SKIP_DIR 1
731 #define PFE_SKIP_PROTO 2
732 #define PFE_SKIP_SRC_ADDR 3
733 #define PFE_SKIP_DST_ADDR 4
734 #define PFE_SKIP_SRC_IP_ADDR 5
735 #define PFE_SKIP_DST_IP_ADDR 6
736 #define PFE_SKIP_COUNT 7
737 union pf_keth_rule_ptr skip[PFE_SKIP_COUNT];
738
739 TAILQ_ENTRY(pf_keth_rule) entries;
740
741 struct pf_keth_anchor *anchor;
742 u_int8_t anchor_relative;
743 u_int8_t anchor_wildcard;
744
745 uint32_t nr;
746
747 bool quick;
748
749 /* Filter */
750 char ifname[IFNAMSIZ];
751 struct pfi_kkif *kif;
752 bool ifnot;
753 uint8_t direction;
754 uint16_t proto;
755 struct pf_keth_rule_addr src, dst;
756 struct pf_rule_addr ipsrc, ipdst;
757 char match_tagname[PF_TAG_NAME_SIZE];
758 uint16_t match_tag;
759 bool match_tag_not;
760
761
762 /* Stats */
763 counter_u64_t evaluations;
764 counter_u64_t packets[2];
765 counter_u64_t bytes[2];
766 time_t *timestamp;
767
768 /* Action */
769 char qname[PF_QNAME_SIZE];
770 int qid;
771 char tagname[PF_TAG_NAME_SIZE];
772 uint16_t tag;
773 char bridge_to_name[IFNAMSIZ];
774 struct pfi_kkif *bridge_to;
775 uint8_t action;
776 uint16_t dnpipe;
777 uint32_t dnflags;
778
779 char label[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE];
780 uint32_t ridentifier;
781 };
782
783 RB_HEAD(pf_krule_global, pf_krule);
784 RB_PROTOTYPE(pf_krule_global, pf_krule, entry_global, pf_krule_compare);
785
786 struct pf_krule {
787 struct pf_rule_addr src;
788 struct pf_rule_addr dst;
789 struct pf_krule *skip[PF_SKIP_COUNT];
790 char label[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE];
791 uint32_t ridentifier;
792 char ifname[IFNAMSIZ];
793 char rcv_ifname[IFNAMSIZ];
794 char qname[PF_QNAME_SIZE];
795 char pqname[PF_QNAME_SIZE];
796 char tagname[PF_TAG_NAME_SIZE];
797 char match_tagname[PF_TAG_NAME_SIZE];
798
799 char overload_tblname[PF_TABLE_NAME_SIZE];
800
801 TAILQ_ENTRY(pf_krule) entries;
802 struct pf_kpool nat;
803 struct pf_kpool rdr;
804 struct pf_kpool route;
805
806 struct pf_counter_u64 evaluations;
807 struct pf_counter_u64 packets[2];
808 struct pf_counter_u64 bytes[2];
809 time_t *timestamp;
810
811 struct pfi_kkif *kif;
812 struct pfi_kkif *rcv_kif;
813 struct pf_kanchor *anchor;
814 struct pfr_ktable *overload_tbl;
815
816 pf_osfp_t os_fingerprint;
817
818 int32_t rtableid;
819 u_int32_t timeout[PFTM_MAX];
820 u_int32_t max_states;
821 u_int32_t max_src_nodes;
822 u_int32_t max_src_states;
823 u_int32_t max_src_conn;
824 struct {
825 u_int32_t limit;
826 u_int32_t seconds;
827 } max_src_conn_rate;
828 u_int16_t qid;
829 u_int16_t pqid;
830 u_int16_t dnpipe;
831 u_int16_t dnrpipe;
832 u_int32_t free_flags;
833 u_int32_t nr;
834 u_int32_t prob;
835 uid_t cuid;
836 pid_t cpid;
837
838 counter_u64_t states_cur;
839 counter_u64_t states_tot;
840 counter_u64_t src_nodes[PF_SN_MAX];
841
842 u_int16_t return_icmp;
843 u_int16_t return_icmp6;
844 u_int16_t max_mss;
845 u_int16_t tag;
846 u_int16_t match_tag;
847 u_int16_t scrub_flags;
848
849 struct pf_rule_uid uid;
850 struct pf_rule_gid gid;
851
852 u_int32_t rule_flag;
853 uint32_t rule_ref;
854 u_int8_t action;
855 u_int8_t direction;
856 u_int8_t log;
857 u_int8_t logif;
858 u_int8_t quick;
859 u_int8_t ifnot;
860 u_int8_t match_tag_not;
861 u_int8_t natpass;
862
863 u_int8_t keep_state;
864 sa_family_t af;
865 u_int8_t proto;
866 u_int8_t type;
867 u_int8_t code;
868 u_int8_t flags;
869 u_int8_t flagset;
870 u_int8_t min_ttl;
871 u_int8_t allow_opts;
872 u_int8_t rt;
873 u_int8_t return_ttl;
874 u_int8_t tos;
875 u_int8_t set_tos;
876 u_int8_t anchor_relative;
877 u_int8_t anchor_wildcard;
878
879 u_int8_t flush;
880 u_int8_t prio;
881 u_int8_t set_prio[2];
882 sa_family_t naf;
883 u_int8_t rcvifnot;
884
885 struct {
886 struct pf_addr addr;
887 u_int16_t port;
888 } divert;
889 u_int8_t md5sum[PF_MD5_DIGEST_LENGTH];
890 RB_ENTRY(pf_krule) entry_global;
891
892 #ifdef PF_WANT_32_TO_64_COUNTER
893 LIST_ENTRY(pf_krule) allrulelist;
894 bool allrulelinked;
895 #endif
896 };
897
898 struct pf_krule_item {
899 SLIST_ENTRY(pf_krule_item) entry;
900 struct pf_krule *r;
901 };
902
903 SLIST_HEAD(pf_krule_slist, pf_krule_item);
904
905 struct pf_ksrc_node {
906 LIST_ENTRY(pf_ksrc_node) entry;
907 struct pf_addr addr;
908 struct pf_addr raddr;
909 struct pf_krule_slist match_rules;
910 struct pf_krule *rule;
911 struct pfi_kkif *rkif;
912 counter_u64_t bytes[2];
913 counter_u64_t packets[2];
914 u_int32_t states;
915 u_int32_t conn;
916 struct pf_threshold conn_rate;
917 u_int32_t creation;
918 u_int32_t expire;
919 sa_family_t af;
920 sa_family_t naf;
921 u_int8_t ruletype;
922 pf_sn_types_t type;
923 struct mtx *lock;
924 };
925 #endif
926
927 struct pf_state_scrub {
928 struct timeval pfss_last; /* time received last packet */
929 u_int32_t pfss_tsecr; /* last echoed timestamp */
930 u_int32_t pfss_tsval; /* largest timestamp */
931 u_int32_t pfss_tsval0; /* original timestamp */
932 u_int16_t pfss_flags;
933 #define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */
934 #define PFSS_PAWS 0x0010 /* stricter PAWS checks */
935 #define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */
936 #define PFSS_DATA_TS 0x0040 /* timestamp on data packets */
937 #define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */
938 u_int8_t pfss_ttl; /* stashed TTL */
939 u_int8_t pad;
940 union {
941 u_int32_t pfss_ts_mod; /* timestamp modulation */
942 u_int32_t pfss_v_tag; /* SCTP verification tag */
943 };
944 };
945
946 struct pf_state_host {
947 struct pf_addr addr;
948 u_int16_t port;
949 u_int16_t pad;
950 };
951
952 struct pf_state_peer {
953 struct pf_state_scrub *scrub; /* state is scrubbed */
954 u_int32_t seqlo; /* Max sequence number sent */
955 u_int32_t seqhi; /* Max the other end ACKd + win */
956 u_int32_t seqdiff; /* Sequence number modulator */
957 u_int16_t max_win; /* largest window (pre scaling) */
958 u_int16_t mss; /* Maximum segment size option */
959 u_int8_t state; /* active state level */
960 u_int8_t wscale; /* window scaling factor */
961 u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */
962 u_int8_t pad[1];
963 };
964
965 /* Keep synced with struct pf_udp_endpoint. */
966 struct pf_udp_endpoint_cmp {
967 struct pf_addr addr;
968 uint16_t port;
969 sa_family_t af;
970 uint8_t pad[1];
971 };
972
973 struct pf_udp_endpoint {
974 struct pf_addr addr;
975 uint16_t port;
976 sa_family_t af;
977 uint8_t pad[1];
978
979 struct pf_udp_mapping *mapping;
980 LIST_ENTRY(pf_udp_endpoint) entry;
981 };
982
983 struct pf_udp_mapping {
984 struct pf_udp_endpoint endpoints[2];
985 u_int refs;
986 };
987
988 /* Keep synced with struct pf_state_key. */
989 struct pf_state_key_cmp {
990 struct pf_addr addr[2];
991 u_int16_t port[2];
992 sa_family_t af;
993 u_int8_t proto;
994 u_int8_t pad[2];
995 };
996
997 struct pf_state_key {
998 struct pf_addr addr[2];
999 u_int16_t port[2];
1000 sa_family_t af;
1001 u_int8_t proto;
1002 u_int8_t pad[2];
1003
1004 LIST_ENTRY(pf_state_key) entry;
1005 TAILQ_HEAD(, pf_kstate) states[2];
1006 };
1007
1008 #define PF_REVERSED_KEY(key, family) \
1009 ((key[PF_SK_WIRE]->af != key[PF_SK_STACK]->af) && \
1010 (key[PF_SK_WIRE]->af != (family)))
1011
1012 /* Keep synced with struct pf_kstate. */
1013 struct pf_state_cmp {
1014 u_int64_t id;
1015 u_int32_t creatorid;
1016 u_int8_t direction;
1017 u_int8_t pad[3];
1018 };
1019
1020 struct pf_state_scrub_export {
1021 uint16_t pfss_flags;
1022 uint8_t pfss_ttl; /* stashed TTL */
1023 #define PF_SCRUB_FLAG_VALID 0x01
1024 uint8_t scrub_flag;
1025 uint32_t pfss_ts_mod; /* timestamp modulation */
1026 };
1027
1028 struct pf_state_key_export {
1029 struct pf_addr addr[2];
1030 uint16_t port[2];
1031 };
1032
1033 struct pf_state_peer_export {
1034 struct pf_state_scrub_export scrub; /* state is scrubbed */
1035 uint32_t seqlo; /* Max sequence number sent */
1036 uint32_t seqhi; /* Max the other end ACKd + win */
1037 uint32_t seqdiff; /* Sequence number modulator */
1038 uint16_t max_win; /* largest window (pre scaling) */
1039 uint16_t mss; /* Maximum segment size option */
1040 uint8_t state; /* active state level */
1041 uint8_t wscale; /* window scaling factor */
1042 uint8_t dummy[6];
1043 };
1044 _Static_assert(sizeof(struct pf_state_peer_export) == 32, "size incorrect");
1045
1046 struct pf_state_export {
1047 uint64_t version;
1048 #define PF_STATE_VERSION 20230404
1049 uint64_t id;
1050 char ifname[IFNAMSIZ];
1051 char orig_ifname[IFNAMSIZ];
1052 struct pf_state_key_export key[2];
1053 struct pf_state_peer_export src;
1054 struct pf_state_peer_export dst;
1055 struct pf_addr rt_addr;
1056 uint32_t rule;
1057 uint32_t anchor;
1058 uint32_t nat_rule;
1059 uint32_t creation;
1060 uint32_t expire;
1061 uint32_t spare0;
1062 uint64_t packets[2];
1063 uint64_t bytes[2];
1064 uint32_t creatorid;
1065 uint32_t spare1;
1066 sa_family_t af;
1067 uint8_t proto;
1068 uint8_t direction;
1069 uint8_t log;
1070 uint8_t state_flags_compat;
1071 uint8_t timeout;
1072 uint8_t sync_flags;
1073 uint8_t updates;
1074 uint16_t state_flags;
1075 uint16_t qid;
1076 uint16_t pqid;
1077 uint16_t dnpipe;
1078 uint16_t dnrpipe;
1079 int32_t rtableid;
1080 uint8_t min_ttl;
1081 uint8_t set_tos;
1082 uint16_t max_mss;
1083 uint8_t set_prio[2];
1084 uint8_t rt;
1085 char rt_ifname[IFNAMSIZ];
1086
1087 uint8_t spare[72];
1088 };
1089 _Static_assert(sizeof(struct pf_state_export) == 384, "size incorrect");
1090
1091 #ifdef _KERNEL
1092 struct pf_kstate {
1093 /*
1094 * Area shared with pf_state_cmp
1095 */
1096 u_int64_t id;
1097 u_int32_t creatorid;
1098 u_int8_t direction;
1099 u_int8_t pad[3];
1100 /*
1101 * end of the area
1102 */
1103
1104 u_int16_t state_flags;
1105 u_int8_t timeout;
1106 u_int8_t sync_state; /* PFSYNC_S_x */
1107 u_int8_t sync_updates;
1108 u_int refs;
1109 struct mtx *lock;
1110 TAILQ_ENTRY(pf_kstate) sync_list;
1111 TAILQ_ENTRY(pf_kstate) key_list[2];
1112 LIST_ENTRY(pf_kstate) entry;
1113 struct pf_state_peer src;
1114 struct pf_state_peer dst;
1115 struct pf_krule_slist match_rules;
1116 struct pf_krule *rule;
1117 struct pf_krule *anchor;
1118 struct pf_krule *nat_rule;
1119 struct pf_state_key *key[2]; /* addresses stack and wire */
1120 struct pf_udp_mapping *udp_mapping;
1121 struct pfi_kkif *kif;
1122 struct pfi_kkif *orig_kif; /* The real kif, even if we're a floating state (i.e. if == V_pfi_all). */
1123 struct pf_ksrc_node *sns[PF_SN_MAX];/* source nodes */
1124 u_int64_t packets[2];
1125 u_int64_t bytes[2];
1126 u_int64_t creation;
1127 u_int64_t expire;
1128 u_int32_t pfsync_time;
1129 struct pf_rule_actions act;
1130 u_int16_t tag;
1131 u_int16_t if_index_in;
1132 u_int16_t if_index_out;
1133 };
1134
1135 /*
1136 * 6 cache lines per struct, 10 structs per page.
1137 * Try to not grow the struct beyond that.
1138 */
1139 _Static_assert(sizeof(struct pf_kstate) <= 384, "pf_kstate size crosses 384 bytes");
1140 #endif
1141
1142 /*
1143 * Unified state structures for pulling states out of the kernel
1144 * used by pfsync(4) and the pf(4) ioctl.
1145 */
1146 struct pfsync_state_scrub {
1147 u_int16_t pfss_flags;
1148 u_int8_t pfss_ttl; /* stashed TTL */
1149 #define PFSYNC_SCRUB_FLAG_VALID 0x01
1150 u_int8_t scrub_flag;
1151 u_int32_t pfss_ts_mod; /* timestamp modulation */
1152 } __packed;
1153
1154 struct pfsync_state_peer {
1155 struct pfsync_state_scrub scrub; /* state is scrubbed */
1156 u_int32_t seqlo; /* Max sequence number sent */
1157 u_int32_t seqhi; /* Max the other end ACKd + win */
1158 u_int32_t seqdiff; /* Sequence number modulator */
1159 u_int16_t max_win; /* largest window (pre scaling) */
1160 u_int16_t mss; /* Maximum segment size option */
1161 u_int8_t state; /* active state level */
1162 u_int8_t wscale; /* window scaling factor */
1163 u_int8_t pad[6];
1164 } __packed;
1165
1166 struct pfsync_state_key {
1167 struct pf_addr addr[2];
1168 u_int16_t port[2];
1169 };
1170
1171 struct pfsync_state_1301 {
1172 u_int64_t id;
1173 char ifname[IFNAMSIZ];
1174 struct pfsync_state_key key[2];
1175 struct pfsync_state_peer src;
1176 struct pfsync_state_peer dst;
1177 struct pf_addr rt_addr;
1178 u_int32_t rule;
1179 u_int32_t anchor;
1180 u_int32_t nat_rule;
1181 u_int32_t creation;
1182 u_int32_t expire;
1183 u_int32_t packets[2][2];
1184 u_int32_t bytes[2][2];
1185 u_int32_t creatorid;
1186 sa_family_t af;
1187 u_int8_t proto;
1188 u_int8_t direction;
1189 u_int8_t __spare[2];
1190 u_int8_t log;
1191 u_int8_t state_flags;
1192 u_int8_t timeout;
1193 u_int8_t sync_flags;
1194 u_int8_t updates;
1195 } __packed;
1196
1197 struct pfsync_state_1400 {
1198 /* The beginning of the struct is compatible with previous versions */
1199 u_int64_t id;
1200 char ifname[IFNAMSIZ];
1201 struct pfsync_state_key key[2];
1202 struct pfsync_state_peer src;
1203 struct pfsync_state_peer dst;
1204 struct pf_addr rt_addr;
1205 u_int32_t rule;
1206 u_int32_t anchor;
1207 u_int32_t nat_rule;
1208 u_int32_t creation;
1209 u_int32_t expire;
1210 u_int32_t packets[2][2];
1211 u_int32_t bytes[2][2];
1212 u_int32_t creatorid;
1213 sa_family_t af;
1214 u_int8_t proto;
1215 u_int8_t direction;
1216 u_int16_t state_flags;
1217 u_int8_t log;
1218 u_int8_t __spare;
1219 u_int8_t timeout;
1220 u_int8_t sync_flags;
1221 u_int8_t updates;
1222 /* The rest is not */
1223 u_int16_t qid;
1224 u_int16_t pqid;
1225 u_int16_t dnpipe;
1226 u_int16_t dnrpipe;
1227 int32_t rtableid;
1228 u_int8_t min_ttl;
1229 u_int8_t set_tos;
1230 u_int16_t max_mss;
1231 u_int8_t set_prio[2];
1232 u_int8_t rt;
1233 char rt_ifname[IFNAMSIZ];
1234
1235 } __packed;
1236
1237 union pfsync_state_union {
1238 struct pfsync_state_1301 pfs_1301;
1239 struct pfsync_state_1400 pfs_1400;
1240 } __packed;
1241
1242 #ifdef _KERNEL
1243 /* pfsync */
1244 typedef int pfsync_state_import_t(union pfsync_state_union *, int, int);
1245 typedef void pfsync_insert_state_t(struct pf_kstate *);
1246 typedef void pfsync_update_state_t(struct pf_kstate *);
1247 typedef void pfsync_delete_state_t(struct pf_kstate *);
1248 typedef void pfsync_clear_states_t(u_int32_t, const char *);
1249 typedef int pfsync_defer_t(struct pf_kstate *, struct mbuf *);
1250 typedef void pfsync_detach_ifnet_t(struct ifnet *);
1251 typedef void pflow_export_state_t(const struct pf_kstate *);
1252 typedef bool pf_addr_filter_func_t(const sa_family_t, const struct pf_addr *);
1253
1254 VNET_DECLARE(pfsync_state_import_t *, pfsync_state_import_ptr);
1255 #define V_pfsync_state_import_ptr VNET(pfsync_state_import_ptr)
1256 VNET_DECLARE(pfsync_insert_state_t *, pfsync_insert_state_ptr);
1257 #define V_pfsync_insert_state_ptr VNET(pfsync_insert_state_ptr)
1258 VNET_DECLARE(pfsync_update_state_t *, pfsync_update_state_ptr);
1259 #define V_pfsync_update_state_ptr VNET(pfsync_update_state_ptr)
1260 VNET_DECLARE(pfsync_delete_state_t *, pfsync_delete_state_ptr);
1261 #define V_pfsync_delete_state_ptr VNET(pfsync_delete_state_ptr)
1262 VNET_DECLARE(pfsync_clear_states_t *, pfsync_clear_states_ptr);
1263 #define V_pfsync_clear_states_ptr VNET(pfsync_clear_states_ptr)
1264 VNET_DECLARE(pfsync_defer_t *, pfsync_defer_ptr);
1265 #define V_pfsync_defer_ptr VNET(pfsync_defer_ptr)
1266 VNET_DECLARE(pflow_export_state_t *, pflow_export_state_ptr);
1267 #define V_pflow_export_state_ptr VNET(pflow_export_state_ptr)
1268 extern pfsync_detach_ifnet_t *pfsync_detach_ifnet_ptr;
1269
1270 void pfsync_state_export(union pfsync_state_union *,
1271 struct pf_kstate *, int);
1272 void pf_state_export(struct pf_state_export *,
1273 struct pf_kstate *);
1274
1275 /* pflog */
1276 struct pf_kruleset;
1277 struct pf_pdesc;
1278 typedef int pflog_packet_t(uint8_t, u_int8_t,
1279 struct pf_krule *, struct pf_krule *, struct pf_kruleset *,
1280 struct pf_pdesc *, int);
1281 extern pflog_packet_t *pflog_packet_ptr;
1282
1283 #endif /* _KERNEL */
1284
1285 #define PFSYNC_FLAG_SRCNODE 0x04
1286 #define PFSYNC_FLAG_NATSRCNODE 0x08
1287
1288 /* for copies to/from network byte order */
1289 /* ioctl interface also uses network byte order */
1290 #define pf_state_peer_hton(s,d) do { \
1291 (d)->seqlo = htonl((s)->seqlo); \
1292 (d)->seqhi = htonl((s)->seqhi); \
1293 (d)->seqdiff = htonl((s)->seqdiff); \
1294 (d)->max_win = htons((s)->max_win); \
1295 (d)->mss = htons((s)->mss); \
1296 (d)->state = (s)->state; \
1297 (d)->wscale = (s)->wscale; \
1298 if ((s)->scrub) { \
1299 (d)->scrub.pfss_flags = \
1300 htons((s)->scrub->pfss_flags & PFSS_TIMESTAMP); \
1301 (d)->scrub.pfss_ttl = (s)->scrub->pfss_ttl; \
1302 (d)->scrub.pfss_ts_mod = htonl((s)->scrub->pfss_ts_mod);\
1303 (d)->scrub.scrub_flag = PFSYNC_SCRUB_FLAG_VALID; \
1304 } \
1305 } while (0)
1306
1307 #define pf_state_peer_ntoh(s,d) do { \
1308 (d)->seqlo = ntohl((s)->seqlo); \
1309 (d)->seqhi = ntohl((s)->seqhi); \
1310 (d)->seqdiff = ntohl((s)->seqdiff); \
1311 (d)->max_win = ntohs((s)->max_win); \
1312 (d)->mss = ntohs((s)->mss); \
1313 (d)->state = (s)->state; \
1314 (d)->wscale = (s)->wscale; \
1315 if ((s)->scrub.scrub_flag == PFSYNC_SCRUB_FLAG_VALID && \
1316 (d)->scrub != NULL) { \
1317 (d)->scrub->pfss_flags = \
1318 ntohs((s)->scrub.pfss_flags) & PFSS_TIMESTAMP; \
1319 (d)->scrub->pfss_ttl = (s)->scrub.pfss_ttl; \
1320 (d)->scrub->pfss_ts_mod = ntohl((s)->scrub.pfss_ts_mod);\
1321 } \
1322 } while (0)
1323
1324 #define pf_state_counter_hton(s,d) do { \
1325 d[0] = htonl((s>>32)&0xffffffff); \
1326 d[1] = htonl(s&0xffffffff); \
1327 } while (0)
1328
1329 #define pf_state_counter_from_pfsync(s) \
1330 (((u_int64_t)(s[0])<<32) | (u_int64_t)(s[1]))
1331
1332 #define pf_state_counter_ntoh(s,d) do { \
1333 d = ntohl(s[0]); \
1334 d = d<<32; \
1335 d += ntohl(s[1]); \
1336 } while (0)
1337
1338 TAILQ_HEAD(pf_krulequeue, pf_krule);
1339
1340 struct pf_kanchor;
1341
1342 struct pf_kruleset {
1343 struct {
1344 struct pf_krulequeue queues[2];
1345 struct {
1346 struct pf_krulequeue *ptr;
1347 struct pf_krule **ptr_array;
1348 u_int32_t rcount;
1349 u_int32_t ticket;
1350 int open;
1351 struct pf_krule_global *tree;
1352 } active, inactive;
1353 } rules[PF_RULESET_MAX];
1354 struct pf_kanchor *anchor;
1355 u_int32_t tticket;
1356 int tables;
1357 int topen;
1358 };
1359
1360 RB_HEAD(pf_kanchor_global, pf_kanchor);
1361 RB_HEAD(pf_kanchor_node, pf_kanchor);
1362 struct pf_kanchor {
1363 RB_ENTRY(pf_kanchor) entry_global;
1364 RB_ENTRY(pf_kanchor) entry_node;
1365 struct pf_kanchor *parent;
1366 struct pf_kanchor_node children;
1367 char name[PF_ANCHOR_NAME_SIZE];
1368 char path[MAXPATHLEN];
1369 struct pf_kruleset ruleset;
1370 int refcnt; /* anchor rules */
1371 };
1372 RB_PROTOTYPE(pf_kanchor_global, pf_kanchor, entry_global, pf_anchor_compare);
1373 RB_PROTOTYPE(pf_kanchor_node, pf_kanchor, entry_node, pf_kanchor_compare);
1374
1375 #define PF_RESERVED_ANCHOR "_pf"
1376
1377 #define PFR_TFLAG_PERSIST 0x00000001
1378 #define PFR_TFLAG_CONST 0x00000002
1379 #define PFR_TFLAG_ACTIVE 0x00000004
1380 #define PFR_TFLAG_INACTIVE 0x00000008
1381 #define PFR_TFLAG_REFERENCED 0x00000010
1382 #define PFR_TFLAG_REFDANCHOR 0x00000020
1383 #define PFR_TFLAG_COUNTERS 0x00000040
1384 /* Adjust masks below when adding flags. */
1385 #define PFR_TFLAG_USRMASK (PFR_TFLAG_PERSIST | \
1386 PFR_TFLAG_CONST | \
1387 PFR_TFLAG_COUNTERS)
1388 #define PFR_TFLAG_SETMASK (PFR_TFLAG_ACTIVE | \
1389 PFR_TFLAG_INACTIVE | \
1390 PFR_TFLAG_REFERENCED | \
1391 PFR_TFLAG_REFDANCHOR)
1392 #define PFR_TFLAG_ALLMASK (PFR_TFLAG_PERSIST | \
1393 PFR_TFLAG_CONST | \
1394 PFR_TFLAG_ACTIVE | \
1395 PFR_TFLAG_INACTIVE | \
1396 PFR_TFLAG_REFERENCED | \
1397 PFR_TFLAG_REFDANCHOR | \
1398 PFR_TFLAG_COUNTERS)
1399
1400 struct pf_kanchor_stackframe;
1401 struct pf_keth_anchor_stackframe;
1402
1403 struct pfr_table {
1404 char pfrt_anchor[MAXPATHLEN];
1405 char pfrt_name[PF_TABLE_NAME_SIZE];
1406 u_int32_t pfrt_flags;
1407 u_int8_t pfrt_fback;
1408 };
1409
1410 enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED,
1411 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE,
1412 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_NOCOUNT, PFR_FB_MAX };
1413
1414 struct pfr_addr {
1415 union {
1416 struct in_addr _pfra_ip4addr;
1417 struct in6_addr _pfra_ip6addr;
1418 } pfra_u;
1419 u_int8_t pfra_af;
1420 u_int8_t pfra_net;
1421 u_int8_t pfra_not;
1422 u_int8_t pfra_fback;
1423 };
1424 #define pfra_ip4addr pfra_u._pfra_ip4addr
1425 #define pfra_ip6addr pfra_u._pfra_ip6addr
1426
1427 enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX };
1428 enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX };
1429 enum { PFR_TYPE_PACKETS, PFR_TYPE_BYTES, PFR_TYPE_MAX };
1430 #define PFR_NUM_COUNTERS (PFR_DIR_MAX * PFR_OP_ADDR_MAX * PFR_TYPE_MAX)
1431 #define PFR_OP_XPASS PFR_OP_ADDR_MAX
1432
1433 struct pfr_astats {
1434 struct pfr_addr pfras_a;
1435 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
1436 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
1437 time_t pfras_tzero;
1438 };
1439
1440 enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX };
1441
1442 struct pfr_tstats {
1443 struct pfr_table pfrts_t;
1444 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
1445 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
1446 u_int64_t pfrts_match;
1447 u_int64_t pfrts_nomatch;
1448 time_t pfrts_tzero;
1449 int pfrts_cnt;
1450 int pfrts_refcnt[PFR_REFCNT_MAX];
1451 };
1452
1453 #ifdef _KERNEL
1454
1455 struct pfr_kstate_counter {
1456 counter_u64_t pkc_pcpu;
1457 u_int64_t pkc_zero;
1458 };
1459
1460 static inline int
pfr_kstate_counter_init(struct pfr_kstate_counter * pfrc,int flags)1461 pfr_kstate_counter_init(struct pfr_kstate_counter *pfrc, int flags)
1462 {
1463
1464 pfrc->pkc_zero = 0;
1465 pfrc->pkc_pcpu = counter_u64_alloc(flags);
1466 if (pfrc->pkc_pcpu == NULL)
1467 return (ENOMEM);
1468 return (0);
1469 }
1470
1471 static inline void
pfr_kstate_counter_deinit(struct pfr_kstate_counter * pfrc)1472 pfr_kstate_counter_deinit(struct pfr_kstate_counter *pfrc)
1473 {
1474
1475 counter_u64_free(pfrc->pkc_pcpu);
1476 }
1477
1478 static inline u_int64_t
pfr_kstate_counter_fetch(struct pfr_kstate_counter * pfrc)1479 pfr_kstate_counter_fetch(struct pfr_kstate_counter *pfrc)
1480 {
1481 u_int64_t c;
1482
1483 c = counter_u64_fetch(pfrc->pkc_pcpu);
1484 c -= pfrc->pkc_zero;
1485 return (c);
1486 }
1487
1488 static inline void
pfr_kstate_counter_zero(struct pfr_kstate_counter * pfrc)1489 pfr_kstate_counter_zero(struct pfr_kstate_counter *pfrc)
1490 {
1491 u_int64_t c;
1492
1493 c = counter_u64_fetch(pfrc->pkc_pcpu);
1494 pfrc->pkc_zero = c;
1495 }
1496
1497 static inline void
pfr_kstate_counter_add(struct pfr_kstate_counter * pfrc,int64_t n)1498 pfr_kstate_counter_add(struct pfr_kstate_counter *pfrc, int64_t n)
1499 {
1500
1501 counter_u64_add(pfrc->pkc_pcpu, n);
1502 }
1503
1504 struct pfr_ktstats {
1505 struct pfr_table pfrts_t;
1506 struct pfr_kstate_counter pfrkts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
1507 struct pfr_kstate_counter pfrkts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
1508 struct pfr_kstate_counter pfrkts_match;
1509 struct pfr_kstate_counter pfrkts_nomatch;
1510 time_t pfrkts_tzero;
1511 int pfrkts_cnt;
1512 int pfrkts_refcnt[PFR_REFCNT_MAX];
1513 };
1514
1515 #endif /* _KERNEL */
1516
1517 #define pfrts_name pfrts_t.pfrt_name
1518 #define pfrts_flags pfrts_t.pfrt_flags
1519
1520 #ifndef _SOCKADDR_UNION_DEFINED
1521 #define _SOCKADDR_UNION_DEFINED
1522 union sockaddr_union {
1523 struct sockaddr sa;
1524 struct sockaddr_in sin;
1525 struct sockaddr_in6 sin6;
1526 };
1527 #endif /* _SOCKADDR_UNION_DEFINED */
1528
1529 struct pfr_kcounters {
1530 counter_u64_t pfrkc_counters;
1531 time_t pfrkc_tzero;
1532 };
1533 #define pfr_kentry_counter(kc, dir, op, t) \
1534 ((kc)->pfrkc_counters + \
1535 (dir) * PFR_OP_ADDR_MAX * PFR_TYPE_MAX + (op) * PFR_TYPE_MAX + (t))
1536
1537 #ifdef _KERNEL
1538 SLIST_HEAD(pfr_kentryworkq, pfr_kentry);
1539 struct pfr_kentry {
1540 struct radix_node pfrke_node[2];
1541 union sockaddr_union pfrke_sa;
1542 SLIST_ENTRY(pfr_kentry) pfrke_workq;
1543 struct pfr_kcounters pfrke_counters;
1544 u_int8_t pfrke_af;
1545 u_int8_t pfrke_net;
1546 u_int8_t pfrke_not;
1547 u_int8_t pfrke_mark;
1548 };
1549
1550 SLIST_HEAD(pfr_ktableworkq, pfr_ktable);
1551 RB_HEAD(pfr_ktablehead, pfr_ktable);
1552 struct pfr_ktable {
1553 struct pfr_ktstats pfrkt_kts;
1554 RB_ENTRY(pfr_ktable) pfrkt_tree;
1555 SLIST_ENTRY(pfr_ktable) pfrkt_workq;
1556 struct radix_node_head *pfrkt_ip4;
1557 struct radix_node_head *pfrkt_ip6;
1558 struct pfr_ktable *pfrkt_shadow;
1559 struct pfr_ktable *pfrkt_root;
1560 struct pf_kruleset *pfrkt_rs;
1561 long pfrkt_larg;
1562 int pfrkt_nflags;
1563 };
1564 #define pfrkt_t pfrkt_kts.pfrts_t
1565 #define pfrkt_name pfrkt_t.pfrt_name
1566 #define pfrkt_anchor pfrkt_t.pfrt_anchor
1567 #define pfrkt_ruleset pfrkt_t.pfrt_ruleset
1568 #define pfrkt_flags pfrkt_t.pfrt_flags
1569 #define pfrkt_cnt pfrkt_kts.pfrkts_cnt
1570 #define pfrkt_refcnt pfrkt_kts.pfrkts_refcnt
1571 #define pfrkt_packets pfrkt_kts.pfrkts_packets
1572 #define pfrkt_bytes pfrkt_kts.pfrkts_bytes
1573 #define pfrkt_match pfrkt_kts.pfrkts_match
1574 #define pfrkt_nomatch pfrkt_kts.pfrkts_nomatch
1575 #define pfrkt_tzero pfrkt_kts.pfrkts_tzero
1576 #endif
1577
1578 #ifdef _KERNEL
1579 struct pfi_kkif {
1580 char pfik_name[IFNAMSIZ];
1581 union {
1582 RB_ENTRY(pfi_kkif) _pfik_tree;
1583 LIST_ENTRY(pfi_kkif) _pfik_list;
1584 } _pfik_glue;
1585 #define pfik_tree _pfik_glue._pfik_tree
1586 #define pfik_list _pfik_glue._pfik_list
1587 struct pf_counter_u64 pfik_packets[2][2][2];
1588 struct pf_counter_u64 pfik_bytes[2][2][2];
1589 time_t pfik_tzero;
1590 u_int pfik_flags;
1591 struct ifnet *pfik_ifp;
1592 struct ifg_group *pfik_group;
1593 u_int pfik_rulerefs;
1594 TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs;
1595 #ifdef PF_WANT_32_TO_64_COUNTER
1596 LIST_ENTRY(pfi_kkif) pfik_allkiflist;
1597 #endif
1598 };
1599 #endif
1600
1601 #define PFI_IFLAG_REFS 0x0001 /* has state references */
1602 #define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */
1603 #define PFI_IFLAG_ANY 0x0200 /* match any non-loopback interface */
1604
1605 #ifdef _KERNEL
1606 struct pf_sctp_multihome_job;
1607 TAILQ_HEAD(pf_sctp_multihome_jobs, pf_sctp_multihome_job);
1608
1609 struct pf_pdesc {
1610 struct {
1611 int done;
1612 uid_t uid;
1613 gid_t gid;
1614 } lookup;
1615 u_int64_t tot_len; /* Make Mickey money */
1616 union pf_headers {
1617 struct tcphdr tcp;
1618 struct udphdr udp;
1619 struct sctphdr sctp;
1620 struct icmp icmp;
1621 #ifdef INET6
1622 struct icmp6_hdr icmp6;
1623 #endif /* INET6 */
1624 char any[0];
1625 } hdr;
1626
1627 struct pf_addr nsaddr; /* src address after NAT */
1628 struct pf_addr ndaddr; /* dst address after NAT */
1629
1630 struct pfi_kkif *kif; /* incomming interface */
1631 struct mbuf *m;
1632
1633 struct pf_addr *src; /* src address */
1634 struct pf_addr *dst; /* dst address */
1635 u_int16_t *pcksum; /* proto cksum */
1636 u_int16_t *sport;
1637 u_int16_t *dport;
1638 u_int16_t osport;
1639 u_int16_t odport;
1640 u_int16_t nsport; /* src port after NAT */
1641 u_int16_t ndport; /* dst port after NAT */
1642 struct pf_mtag *pf_mtag;
1643 struct pf_rule_actions act;
1644
1645 u_int32_t off; /* protocol header offset */
1646 bool df; /* IPv4 Don't fragment flag. */
1647 u_int32_t hdrlen; /* protocol header length */
1648 u_int32_t p_len; /* total length of protocol payload */
1649 u_int32_t extoff; /* extentsion header offset */
1650 u_int32_t fragoff; /* fragment header offset */
1651 u_int32_t jumbolen; /* length from v6 jumbo header */
1652 u_int32_t badopts; /* v4 options or v6 routing headers */
1653
1654 u_int16_t *ip_sum;
1655 u_int16_t flags; /* Let SCRUB trigger behavior in
1656 * state code. Easier than tags */
1657 #define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */
1658 u_int16_t virtual_proto;
1659 #define PF_VPROTO_FRAGMENT 256
1660 sa_family_t af;
1661 sa_family_t naf;
1662 u_int8_t proto;
1663 u_int8_t tos;
1664 u_int8_t ttl;
1665 u_int8_t dir; /* direction */
1666 u_int8_t sidx; /* key index for source */
1667 u_int8_t didx; /* key index for destination */
1668 #define PFDESC_SCTP_INIT 0x0001
1669 #define PFDESC_SCTP_INIT_ACK 0x0002
1670 #define PFDESC_SCTP_COOKIE 0x0004
1671 #define PFDESC_SCTP_COOKIE_ACK 0x0008
1672 #define PFDESC_SCTP_ABORT 0x0010
1673 #define PFDESC_SCTP_SHUTDOWN 0x0020
1674 #define PFDESC_SCTP_SHUTDOWN_COMPLETE 0x0040
1675 #define PFDESC_SCTP_DATA 0x0080
1676 #define PFDESC_SCTP_ASCONF 0x0100
1677 #define PFDESC_SCTP_HEARTBEAT 0x0200
1678 #define PFDESC_SCTP_HEARTBEAT_ACK 0x0400
1679 #define PFDESC_SCTP_OTHER 0x0800
1680 #define PFDESC_SCTP_ADD_IP 0x1000
1681 u_int16_t sctp_flags;
1682 u_int32_t sctp_initiate_tag;
1683 u_int16_t sctp_dummy_sum;
1684 struct pf_krule *related_rule;
1685
1686 struct pf_sctp_multihome_jobs sctp_multihome_jobs;
1687 };
1688
1689 struct pf_sctp_multihome_job {
1690 TAILQ_ENTRY(pf_sctp_multihome_job) next;
1691 struct pf_pdesc pd;
1692 struct pf_addr src;
1693 struct pf_addr dst;
1694 int op;
1695 };
1696
1697 #endif
1698
1699 /* flags for RDR options */
1700 #define PF_DPORT_RANGE 0x01 /* Dest port uses range */
1701 #define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */
1702
1703 /* UDP state enumeration */
1704 #define PFUDPS_NO_TRAFFIC 0
1705 #define PFUDPS_SINGLE 1
1706 #define PFUDPS_MULTIPLE 2
1707
1708 #define PFUDPS_NSTATES 3 /* number of state levels */
1709
1710 #define PFUDPS_NAMES { \
1711 "NO_TRAFFIC", \
1712 "SINGLE", \
1713 "MULTIPLE", \
1714 NULL \
1715 }
1716
1717 /* Other protocol state enumeration */
1718 #define PFOTHERS_NO_TRAFFIC 0
1719 #define PFOTHERS_SINGLE 1
1720 #define PFOTHERS_MULTIPLE 2
1721
1722 #define PFOTHERS_NSTATES 3 /* number of state levels */
1723
1724 #define PFOTHERS_NAMES { \
1725 "NO_TRAFFIC", \
1726 "SINGLE", \
1727 "MULTIPLE", \
1728 NULL \
1729 }
1730
1731 #define ACTION_SET(a, x) \
1732 do { \
1733 if ((a) != NULL) \
1734 *(a) = (x); \
1735 } while (0)
1736
1737 #define REASON_SET(a, x) \
1738 do { \
1739 if ((a) != NULL) \
1740 *(a) = (x); \
1741 if (x < PFRES_MAX) \
1742 counter_u64_add(V_pf_status.counters[x], 1); \
1743 } while (0)
1744
1745 enum pf_syncookies_mode {
1746 PF_SYNCOOKIES_NEVER = 0,
1747 PF_SYNCOOKIES_ALWAYS = 1,
1748 PF_SYNCOOKIES_ADAPTIVE = 2,
1749 PF_SYNCOOKIES_MODE_MAX = PF_SYNCOOKIES_ADAPTIVE
1750 };
1751
1752 #define PF_SYNCOOKIES_HIWATPCT 25
1753 #define PF_SYNCOOKIES_LOWATPCT (PF_SYNCOOKIES_HIWATPCT / 2)
1754
1755 #ifdef _KERNEL
1756 struct pf_kstatus {
1757 counter_u64_t counters[PFRES_MAX]; /* reason for passing/dropping */
1758 counter_u64_t lcounters[KLCNT_MAX]; /* limit counters */
1759 struct pf_counter_u64 fcounters[FCNT_MAX]; /* state operation counters */
1760 counter_u64_t scounters[SCNT_MAX]; /* src_node operation counters */
1761 uint32_t states;
1762 uint32_t src_nodes;
1763 uint32_t running;
1764 uint32_t since;
1765 uint32_t debug;
1766 uint32_t hostid;
1767 char ifname[IFNAMSIZ];
1768 uint8_t pf_chksum[PF_MD5_DIGEST_LENGTH];
1769 bool keep_counters;
1770 enum pf_syncookies_mode syncookies_mode;
1771 bool syncookies_active;
1772 uint64_t syncookies_inflight[2];
1773 uint32_t states_halfopen;
1774 uint32_t reass;
1775 };
1776 #endif
1777
1778 struct pf_divert {
1779 union {
1780 struct in_addr ipv4;
1781 struct in6_addr ipv6;
1782 } addr;
1783 u_int16_t port;
1784 };
1785
1786 #define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */
1787 #define PFR_KENTRY_HIWAT 200000 /* Number of table entries */
1788
1789 struct pf_fragment_tag {
1790 uint16_t ft_hdrlen; /* header length of reassembled pkt */
1791 uint16_t ft_extoff; /* last extension header offset or 0 */
1792 uint16_t ft_maxlen; /* maximum fragment payload length */
1793 uint32_t ft_id; /* fragment id */
1794 };
1795
1796 /*
1797 * Limit the length of the fragment queue traversal. Remember
1798 * search entry points based on the fragment offset.
1799 */
1800 #define PF_FRAG_ENTRY_POINTS 16
1801
1802 /*
1803 * The number of entries in the fragment queue must be limited
1804 * to avoid DoS by linear searching. Instead of a global limit,
1805 * use a limit per entry point. For large packets these sum up.
1806 */
1807 #define PF_FRAG_ENTRY_LIMIT 64
1808
1809 /*
1810 * ioctl parameter structures
1811 */
1812
1813 struct pfioc_pooladdr {
1814 u_int32_t action;
1815 u_int32_t ticket;
1816 u_int32_t nr;
1817 u_int32_t r_num;
1818 u_int8_t r_action;
1819 u_int8_t r_last;
1820 u_int8_t af;
1821 char anchor[MAXPATHLEN];
1822 struct pf_pooladdr addr;
1823 };
1824
1825 struct pfioc_rule {
1826 u_int32_t action;
1827 u_int32_t ticket;
1828 u_int32_t pool_ticket;
1829 u_int32_t nr;
1830 char anchor[MAXPATHLEN];
1831 char anchor_call[MAXPATHLEN];
1832 struct pf_rule rule;
1833 };
1834
1835 struct pfioc_natlook {
1836 struct pf_addr saddr;
1837 struct pf_addr daddr;
1838 struct pf_addr rsaddr;
1839 struct pf_addr rdaddr;
1840 u_int16_t sport;
1841 u_int16_t dport;
1842 u_int16_t rsport;
1843 u_int16_t rdport;
1844 sa_family_t af;
1845 u_int8_t proto;
1846 u_int8_t direction;
1847 };
1848
1849 struct pfioc_state {
1850 struct pfsync_state_1301 state;
1851 };
1852
1853 struct pfioc_src_node_kill {
1854 sa_family_t psnk_af;
1855 struct pf_rule_addr psnk_src;
1856 struct pf_rule_addr psnk_dst;
1857 u_int psnk_killed;
1858 };
1859
1860 #ifdef _KERNEL
1861 struct pf_kstate_kill {
1862 struct pf_state_cmp psk_pfcmp;
1863 sa_family_t psk_af;
1864 int psk_proto;
1865 struct pf_rule_addr psk_src;
1866 struct pf_rule_addr psk_dst;
1867 struct pf_rule_addr psk_rt_addr;
1868 char psk_ifname[IFNAMSIZ];
1869 char psk_label[PF_RULE_LABEL_SIZE];
1870 u_int psk_killed;
1871 bool psk_kill_match;
1872 bool psk_nat;
1873 };
1874 #endif
1875
1876 struct pfioc_state_kill {
1877 struct pf_state_cmp psk_pfcmp;
1878 sa_family_t psk_af;
1879 int psk_proto;
1880 struct pf_rule_addr psk_src;
1881 struct pf_rule_addr psk_dst;
1882 char psk_ifname[IFNAMSIZ];
1883 char psk_label[PF_RULE_LABEL_SIZE];
1884 u_int psk_killed;
1885 };
1886
1887 struct pfioc_states {
1888 int ps_len;
1889 union {
1890 void *ps_buf;
1891 struct pfsync_state_1301 *ps_states;
1892 };
1893 };
1894
1895 struct pfioc_states_v2 {
1896 int ps_len;
1897 uint64_t ps_req_version;
1898 union {
1899 void *ps_buf;
1900 struct pf_state_export *ps_states;
1901 };
1902 };
1903
1904 struct pfioc_src_nodes {
1905 int psn_len;
1906 union {
1907 void *psn_buf;
1908 struct pf_src_node *psn_src_nodes;
1909 };
1910 };
1911
1912 struct pfioc_if {
1913 char ifname[IFNAMSIZ];
1914 };
1915
1916 struct pfioc_tm {
1917 int timeout;
1918 int seconds;
1919 };
1920
1921 struct pfioc_limit {
1922 int index;
1923 unsigned limit;
1924 };
1925
1926 struct pfioc_altq_v0 {
1927 u_int32_t action;
1928 u_int32_t ticket;
1929 u_int32_t nr;
1930 struct pf_altq_v0 altq;
1931 };
1932
1933 struct pfioc_altq_v1 {
1934 u_int32_t action;
1935 u_int32_t ticket;
1936 u_int32_t nr;
1937 /*
1938 * Placed here so code that only uses the above parameters can be
1939 * written entirely in terms of the v0 or v1 type.
1940 */
1941 u_int32_t version;
1942 struct pf_altq_v1 altq;
1943 };
1944
1945 /*
1946 * Latest version of struct pfioc_altq_vX. This must move in lock-step with
1947 * the latest version of struct pf_altq_vX as it has that struct as a
1948 * member.
1949 */
1950 #define PFIOC_ALTQ_VERSION PF_ALTQ_VERSION
1951
1952 struct pfioc_qstats_v0 {
1953 u_int32_t ticket;
1954 u_int32_t nr;
1955 void *buf;
1956 int nbytes;
1957 u_int8_t scheduler;
1958 };
1959
1960 struct pfioc_qstats_v1 {
1961 u_int32_t ticket;
1962 u_int32_t nr;
1963 void *buf;
1964 int nbytes;
1965 u_int8_t scheduler;
1966 /*
1967 * Placed here so code that only uses the above parameters can be
1968 * written entirely in terms of the v0 or v1 type.
1969 */
1970 u_int32_t version; /* Requested version of stats struct */
1971 };
1972
1973 /* Latest version of struct pfioc_qstats_vX */
1974 #define PFIOC_QSTATS_VERSION 1
1975
1976 struct pfioc_ruleset {
1977 u_int32_t nr;
1978 char path[MAXPATHLEN];
1979 char name[PF_ANCHOR_NAME_SIZE];
1980 };
1981
1982 #define PF_RULESET_ALTQ (PF_RULESET_MAX)
1983 #define PF_RULESET_TABLE (PF_RULESET_MAX+1)
1984 #define PF_RULESET_ETH (PF_RULESET_MAX+2)
1985 struct pfioc_trans {
1986 int size; /* number of elements */
1987 int esize; /* size of each element in bytes */
1988 struct pfioc_trans_e {
1989 int rs_num;
1990 char anchor[MAXPATHLEN];
1991 u_int32_t ticket;
1992 } *array;
1993 };
1994
1995 #define PFR_FLAG_ATOMIC 0x00000001 /* unused */
1996 #define PFR_FLAG_DUMMY 0x00000002
1997 #define PFR_FLAG_FEEDBACK 0x00000004
1998 #define PFR_FLAG_CLSTATS 0x00000008
1999 #define PFR_FLAG_ADDRSTOO 0x00000010
2000 #define PFR_FLAG_REPLACE 0x00000020
2001 #define PFR_FLAG_ALLRSETS 0x00000040
2002 #define PFR_FLAG_ALLMASK 0x0000007F
2003 #ifdef _KERNEL
2004 #define PFR_FLAG_USERIOCTL 0x10000000
2005 #endif
2006
2007 struct pfioc_table {
2008 struct pfr_table pfrio_table;
2009 void *pfrio_buffer;
2010 int pfrio_esize;
2011 int pfrio_size;
2012 int pfrio_size2;
2013 int pfrio_nadd;
2014 int pfrio_ndel;
2015 int pfrio_nchange;
2016 int pfrio_flags;
2017 u_int32_t pfrio_ticket;
2018 };
2019 #define pfrio_exists pfrio_nadd
2020 #define pfrio_nzero pfrio_nadd
2021 #define pfrio_nmatch pfrio_nadd
2022 #define pfrio_naddr pfrio_size2
2023 #define pfrio_setflag pfrio_size2
2024 #define pfrio_clrflag pfrio_nadd
2025
2026 struct pfioc_iface {
2027 char pfiio_name[IFNAMSIZ];
2028 void *pfiio_buffer;
2029 int pfiio_esize;
2030 int pfiio_size;
2031 int pfiio_nzero;
2032 int pfiio_flags;
2033 };
2034
2035 /*
2036 * ioctl operations
2037 */
2038
2039 #define DIOCSTART _IO ('D', 1)
2040 #define DIOCSTOP _IO ('D', 2)
2041 #define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule)
2042 #define DIOCADDRULENV _IOWR('D', 4, struct pfioc_nv)
2043 #define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule)
2044 #define DIOCGETRULENV _IOWR('D', 7, struct pfioc_nv)
2045 /* XXX cut 8 - 17 */
2046 #define DIOCCLRSTATESNV _IOWR('D', 18, struct pfioc_nv)
2047 #define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state)
2048 #define DIOCGETSTATENV _IOWR('D', 19, struct pfioc_nv)
2049 #define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if)
2050 #define DIOCGETSTATUSNV _IOWR('D', 21, struct pfioc_nv)
2051 #define DIOCCLRSTATUS _IO ('D', 22)
2052 #define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook)
2053 #define DIOCSETDEBUG _IOWR('D', 24, u_int32_t)
2054 #ifdef COMPAT_FREEBSD14
2055 #define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states)
2056 #endif
2057 #define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule)
2058 /* XXX cut 26 - 28 */
2059 #define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm)
2060 #define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm)
2061 #define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state)
2062 #define DIOCCLRRULECTRS _IO ('D', 38)
2063 #define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit)
2064 #define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit)
2065 #define DIOCKILLSTATESNV _IOWR('D', 41, struct pfioc_nv)
2066 #define DIOCSTARTALTQ _IO ('D', 42)
2067 #define DIOCSTOPALTQ _IO ('D', 43)
2068 #define DIOCADDALTQV0 _IOWR('D', 45, struct pfioc_altq_v0)
2069 #define DIOCADDALTQV1 _IOWR('D', 45, struct pfioc_altq_v1)
2070 #define DIOCGETALTQSV0 _IOWR('D', 47, struct pfioc_altq_v0)
2071 #define DIOCGETALTQSV1 _IOWR('D', 47, struct pfioc_altq_v1)
2072 #define DIOCGETALTQV0 _IOWR('D', 48, struct pfioc_altq_v0)
2073 #define DIOCGETALTQV1 _IOWR('D', 48, struct pfioc_altq_v1)
2074 #define DIOCCHANGEALTQV0 _IOWR('D', 49, struct pfioc_altq_v0)
2075 #define DIOCCHANGEALTQV1 _IOWR('D', 49, struct pfioc_altq_v1)
2076 #define DIOCGETQSTATSV0 _IOWR('D', 50, struct pfioc_qstats_v0)
2077 #define DIOCGETQSTATSV1 _IOWR('D', 50, struct pfioc_qstats_v1)
2078 #define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr)
2079 #define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr)
2080 #define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr)
2081 #define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr)
2082 #define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr)
2083 /* XXX cut 55 - 57 */
2084 #define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset)
2085 #define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset)
2086 #define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table)
2087 #define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table)
2088 #define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table)
2089 #define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table)
2090 #define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table)
2091 #define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table)
2092 #define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table)
2093 #define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table)
2094 #define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table)
2095 #define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table)
2096 #define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table)
2097 #define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table)
2098 #define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table)
2099 #define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table)
2100 #define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table)
2101 #define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table)
2102 #define DIOCOSFPFLUSH _IO('D', 78)
2103 #define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl)
2104 #define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl)
2105 #define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans)
2106 #define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans)
2107 #define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans)
2108 #define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes)
2109 #define DIOCCLRSRCNODES _IO('D', 85)
2110 #define DIOCSETHOSTID _IOWR('D', 86, u_int32_t)
2111 #define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface)
2112 #define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface)
2113 #define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface)
2114 #define DIOCKILLSRCNODES _IOWR('D', 91, struct pfioc_src_node_kill)
2115 #define DIOCGIFSPEEDV0 _IOWR('D', 92, struct pf_ifspeed_v0)
2116 #define DIOCGIFSPEEDV1 _IOWR('D', 92, struct pf_ifspeed_v1)
2117 #ifdef COMPAT_FREEBSD14
2118 #define DIOCGETSTATESV2 _IOWR('D', 93, struct pfioc_states_v2)
2119 #endif
2120 #define DIOCGETSYNCOOKIES _IOWR('D', 94, struct pfioc_nv)
2121 #define DIOCSETSYNCOOKIES _IOWR('D', 95, struct pfioc_nv)
2122 #define DIOCKEEPCOUNTERS _IOWR('D', 96, struct pfioc_nv)
2123 #define DIOCKEEPCOUNTERS_FREEBSD13 _IOWR('D', 92, struct pfioc_nv)
2124 #define DIOCADDETHRULE _IOWR('D', 97, struct pfioc_nv)
2125 #define DIOCGETETHRULE _IOWR('D', 98, struct pfioc_nv)
2126 #define DIOCGETETHRULES _IOWR('D', 99, struct pfioc_nv)
2127 #define DIOCGETETHRULESETS _IOWR('D', 100, struct pfioc_nv)
2128 #define DIOCGETETHRULESET _IOWR('D', 101, struct pfioc_nv)
2129 #define DIOCSETREASS _IOWR('D', 102, u_int32_t)
2130
2131 struct pf_ifspeed_v0 {
2132 char ifname[IFNAMSIZ];
2133 u_int32_t baudrate;
2134 };
2135
2136 struct pf_ifspeed_v1 {
2137 char ifname[IFNAMSIZ];
2138 u_int32_t baudrate32;
2139 /* layout identical to struct pf_ifspeed_v0 up to this point */
2140 u_int64_t baudrate;
2141 };
2142
2143 /* Latest version of struct pf_ifspeed_vX */
2144 #define PF_IFSPEED_VERSION 1
2145
2146 /*
2147 * Compatibility and convenience macros
2148 */
2149 #ifndef _KERNEL
2150 #ifdef PFIOC_USE_LATEST
2151 /*
2152 * Maintaining in-tree consumers of the ioctl interface is easier when that
2153 * code can be written in terms old names that refer to the latest interface
2154 * version as that reduces the required changes in the consumers to those
2155 * that are functionally necessary to accommodate a new interface version.
2156 */
2157 #define pfioc_altq __CONCAT(pfioc_altq_v, PFIOC_ALTQ_VERSION)
2158 #define pfioc_qstats __CONCAT(pfioc_qstats_v, PFIOC_QSTATS_VERSION)
2159 #define pf_ifspeed __CONCAT(pf_ifspeed_v, PF_IFSPEED_VERSION)
2160
2161 #define DIOCADDALTQ __CONCAT(DIOCADDALTQV, PFIOC_ALTQ_VERSION)
2162 #define DIOCGETALTQS __CONCAT(DIOCGETALTQSV, PFIOC_ALTQ_VERSION)
2163 #define DIOCGETALTQ __CONCAT(DIOCGETALTQV, PFIOC_ALTQ_VERSION)
2164 #define DIOCCHANGEALTQ __CONCAT(DIOCCHANGEALTQV, PFIOC_ALTQ_VERSION)
2165 #define DIOCGETQSTATS __CONCAT(DIOCGETQSTATSV, PFIOC_QSTATS_VERSION)
2166 #define DIOCGIFSPEED __CONCAT(DIOCGIFSPEEDV, PF_IFSPEED_VERSION)
2167 #else
2168 /*
2169 * When building out-of-tree code that is written for the old interface,
2170 * such as may exist in ports for example, resolve the old struct tags and
2171 * ioctl command names to the v0 versions.
2172 */
2173 #define pfioc_altq __CONCAT(pfioc_altq_v, 0)
2174 #define pfioc_qstats __CONCAT(pfioc_qstats_v, 0)
2175 #define pf_ifspeed __CONCAT(pf_ifspeed_v, 0)
2176
2177 #define DIOCADDALTQ __CONCAT(DIOCADDALTQV, 0)
2178 #define DIOCGETALTQS __CONCAT(DIOCGETALTQSV, 0)
2179 #define DIOCGETALTQ __CONCAT(DIOCGETALTQV, 0)
2180 #define DIOCCHANGEALTQ __CONCAT(DIOCCHANGEALTQV, 0)
2181 #define DIOCGETQSTATS __CONCAT(DIOCGETQSTATSV, 0)
2182 #define DIOCGIFSPEED __CONCAT(DIOCGIFSPEEDV, 0)
2183 #endif /* PFIOC_USE_LATEST */
2184 #endif /* _KERNEL */
2185
2186 #ifdef _KERNEL
2187 LIST_HEAD(pf_ksrc_node_list, pf_ksrc_node);
2188 struct pf_srchash {
2189 struct pf_ksrc_node_list nodes;
2190 struct mtx lock;
2191 };
2192
2193 struct pf_keyhash {
2194 LIST_HEAD(, pf_state_key) keys;
2195 struct mtx lock;
2196 };
2197
2198 struct pf_idhash {
2199 LIST_HEAD(, pf_kstate) states;
2200 struct mtx lock;
2201 };
2202
2203 struct pf_udpendpointhash {
2204 LIST_HEAD(, pf_udp_endpoint) endpoints;
2205 /* refcont is synchronized on the source endpoint's row lock */
2206 struct mtx lock;
2207 };
2208
2209 extern u_long pf_ioctl_maxcount;
2210 VNET_DECLARE(u_long, pf_hashmask);
2211 #define V_pf_hashmask VNET(pf_hashmask)
2212 VNET_DECLARE(u_long, pf_srchashmask);
2213 #define V_pf_srchashmask VNET(pf_srchashmask)
2214 VNET_DECLARE(u_long, pf_udpendpointhashmask);
2215 #define V_pf_udpendpointhashmask VNET(pf_udpendpointhashmask)
2216 #define PF_HASHSIZ (131072)
2217 #define PF_SRCHASHSIZ (PF_HASHSIZ/4)
2218 #define PF_UDPENDHASHSIZ (PF_HASHSIZ/4)
2219 VNET_DECLARE(struct pf_keyhash *, pf_keyhash);
2220 VNET_DECLARE(struct pf_idhash *, pf_idhash);
2221 VNET_DECLARE(struct pf_udpendpointhash *, pf_udpendpointhash);
2222 #define V_pf_keyhash VNET(pf_keyhash)
2223 #define V_pf_idhash VNET(pf_idhash)
2224 #define V_pf_udpendpointhash VNET(pf_udpendpointhash)
2225 VNET_DECLARE(struct pf_srchash *, pf_srchash);
2226 #define V_pf_srchash VNET(pf_srchash)
2227
2228 #define PF_IDHASH(s) (be64toh((s)->id) % (V_pf_hashmask + 1))
2229
2230 VNET_DECLARE(void *, pf_swi_cookie);
2231 #define V_pf_swi_cookie VNET(pf_swi_cookie)
2232 VNET_DECLARE(struct intr_event *, pf_swi_ie);
2233 #define V_pf_swi_ie VNET(pf_swi_ie)
2234
2235 VNET_DECLARE(struct unrhdr64, pf_stateid);
2236 #define V_pf_stateid VNET(pf_stateid)
2237
2238 TAILQ_HEAD(pf_altqqueue, pf_altq);
2239 VNET_DECLARE(struct pf_altqqueue, pf_altqs[4]);
2240 #define V_pf_altqs VNET(pf_altqs)
2241 VNET_DECLARE(struct pf_kpalist, pf_pabuf[3]);
2242 #define V_pf_pabuf VNET(pf_pabuf)
2243
2244 VNET_DECLARE(u_int32_t, ticket_altqs_active);
2245 #define V_ticket_altqs_active VNET(ticket_altqs_active)
2246 VNET_DECLARE(u_int32_t, ticket_altqs_inactive);
2247 #define V_ticket_altqs_inactive VNET(ticket_altqs_inactive)
2248 VNET_DECLARE(int, altqs_inactive_open);
2249 #define V_altqs_inactive_open VNET(altqs_inactive_open)
2250 VNET_DECLARE(u_int32_t, ticket_pabuf);
2251 #define V_ticket_pabuf VNET(ticket_pabuf)
2252 VNET_DECLARE(struct pf_altqqueue *, pf_altqs_active);
2253 #define V_pf_altqs_active VNET(pf_altqs_active)
2254 VNET_DECLARE(struct pf_altqqueue *, pf_altq_ifs_active);
2255 #define V_pf_altq_ifs_active VNET(pf_altq_ifs_active)
2256 VNET_DECLARE(struct pf_altqqueue *, pf_altqs_inactive);
2257 #define V_pf_altqs_inactive VNET(pf_altqs_inactive)
2258 VNET_DECLARE(struct pf_altqqueue *, pf_altq_ifs_inactive);
2259 #define V_pf_altq_ifs_inactive VNET(pf_altq_ifs_inactive)
2260
2261 VNET_DECLARE(struct pf_krulequeue, pf_unlinked_rules);
2262 #define V_pf_unlinked_rules VNET(pf_unlinked_rules)
2263
2264 #ifdef PF_WANT_32_TO_64_COUNTER
2265 LIST_HEAD(allkiflist_head, pfi_kkif);
2266 VNET_DECLARE(struct allkiflist_head, pf_allkiflist);
2267 #define V_pf_allkiflist VNET(pf_allkiflist)
2268 VNET_DECLARE(size_t, pf_allkifcount);
2269 #define V_pf_allkifcount VNET(pf_allkifcount)
2270 VNET_DECLARE(struct pfi_kkif *, pf_kifmarker);
2271 #define V_pf_kifmarker VNET(pf_kifmarker)
2272
2273 LIST_HEAD(allrulelist_head, pf_krule);
2274 VNET_DECLARE(struct allrulelist_head, pf_allrulelist);
2275 #define V_pf_allrulelist VNET(pf_allrulelist)
2276 VNET_DECLARE(size_t, pf_allrulecount);
2277 #define V_pf_allrulecount VNET(pf_allrulecount)
2278 VNET_DECLARE(struct pf_krule *, pf_rulemarker);
2279 #define V_pf_rulemarker VNET(pf_rulemarker)
2280 #endif
2281
2282 int pf_start(void);
2283 int pf_stop(void);
2284 void pf_initialize(void);
2285 void pf_mtag_initialize(void);
2286 void pf_mtag_cleanup(void);
2287 void pf_cleanup(void);
2288
2289 struct pf_mtag *pf_get_mtag(struct mbuf *);
2290
2291 extern void pf_calc_skip_steps(struct pf_krulequeue *);
2292 #ifdef ALTQ
2293 extern void pf_altq_ifnet_event(struct ifnet *, int);
2294 #endif
2295 VNET_DECLARE(uma_zone_t, pf_state_z);
2296 #define V_pf_state_z VNET(pf_state_z)
2297 VNET_DECLARE(uma_zone_t, pf_state_key_z);
2298 #define V_pf_state_key_z VNET(pf_state_key_z)
2299 VNET_DECLARE(uma_zone_t, pf_udp_mapping_z);
2300 #define V_pf_udp_mapping_z VNET(pf_udp_mapping_z)
2301 VNET_DECLARE(uma_zone_t, pf_state_scrub_z);
2302 #define V_pf_state_scrub_z VNET(pf_state_scrub_z)
2303
2304 extern void pf_purge_thread(void *);
2305 extern void pf_unload_vnet_purge(void);
2306 extern void pf_intr(void *);
2307 extern void pf_purge_expired_src_nodes(void);
2308
2309 extern int pf_unlink_state(struct pf_kstate *);
2310 extern int pf_state_insert(struct pfi_kkif *,
2311 struct pfi_kkif *,
2312 struct pf_state_key *,
2313 struct pf_state_key *,
2314 struct pf_kstate *);
2315 extern struct pf_kstate *pf_alloc_state(int);
2316 extern void pf_free_state(struct pf_kstate *);
2317 extern void pf_killstates(struct pf_kstate_kill *,
2318 unsigned int *);
2319 extern unsigned int pf_clear_states(const struct pf_kstate_kill *);
2320
2321 static __inline void
pf_ref_state(struct pf_kstate * s)2322 pf_ref_state(struct pf_kstate *s)
2323 {
2324
2325 refcount_acquire(&s->refs);
2326 }
2327
2328 static __inline int
pf_release_state(struct pf_kstate * s)2329 pf_release_state(struct pf_kstate *s)
2330 {
2331
2332 if (refcount_release(&s->refs)) {
2333 pf_free_state(s);
2334 return (1);
2335 } else
2336 return (0);
2337 }
2338
2339 static __inline int
pf_release_staten(struct pf_kstate * s,u_int n)2340 pf_release_staten(struct pf_kstate *s, u_int n)
2341 {
2342
2343 if (refcount_releasen(&s->refs, n)) {
2344 pf_free_state(s);
2345 return (1);
2346 } else
2347 return (0);
2348 }
2349
2350 static __inline uint64_t
pf_get_uptime(void)2351 pf_get_uptime(void)
2352 {
2353 struct timeval t;
2354 microuptime(&t);
2355 return ((t.tv_sec * 1000) + (t.tv_usec / 1000));
2356 }
2357
2358 static __inline uint64_t
pf_get_time(void)2359 pf_get_time(void)
2360 {
2361 struct timeval t;
2362 microtime(&t);
2363 return ((t.tv_sec * 1000) + (t.tv_usec / 1000));
2364 }
2365
2366 extern struct pf_kstate *pf_find_state_byid(uint64_t, uint32_t);
2367 extern struct pf_kstate *pf_find_state_all(
2368 const struct pf_state_key_cmp *,
2369 u_int, int *);
2370 extern bool pf_find_state_all_exists(
2371 const struct pf_state_key_cmp *,
2372 u_int);
2373 extern struct pf_udp_mapping *pf_udp_mapping_find(struct pf_udp_endpoint_cmp
2374 *endpoint);
2375 extern struct pf_udp_mapping *pf_udp_mapping_create(sa_family_t af,
2376 struct pf_addr *src_addr, uint16_t src_port,
2377 struct pf_addr *nat_addr, uint16_t nat_port);
2378 extern int pf_udp_mapping_insert(struct pf_udp_mapping
2379 *mapping);
2380 extern void pf_udp_mapping_release(struct pf_udp_mapping
2381 *mapping);
2382 uint32_t pf_hashsrc(struct pf_addr *, sa_family_t);
2383 extern bool pf_src_node_exists(struct pf_ksrc_node **,
2384 struct pf_srchash *);
2385 extern struct pf_ksrc_node *pf_find_src_node(struct pf_addr *,
2386 struct pf_krule *, sa_family_t,
2387 struct pf_srchash **, pf_sn_types_t, bool);
2388 extern void pf_unlink_src_node(struct pf_ksrc_node *);
2389 extern u_int pf_free_src_nodes(struct pf_ksrc_node_list *);
2390 extern void pf_print_state(struct pf_kstate *);
2391 extern void pf_print_flags(uint16_t);
2392 extern int pf_addr_wrap_neq(struct pf_addr_wrap *,
2393 struct pf_addr_wrap *);
2394 extern u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t,
2395 u_int8_t);
2396 extern u_int16_t pf_proto_cksum_fixup(struct mbuf *, u_int16_t,
2397 u_int16_t, u_int16_t, u_int8_t);
2398
2399 VNET_DECLARE(struct ifnet *, sync_ifp);
2400 #define V_sync_ifp VNET(sync_ifp);
2401 VNET_DECLARE(struct pf_krule, pf_default_rule);
2402 #define V_pf_default_rule VNET(pf_default_rule)
2403 extern void pf_addrcpy(struct pf_addr *, const struct pf_addr *,
2404 sa_family_t);
2405 void pf_free_rule(struct pf_krule *);
2406
2407 int pf_test_eth(int, int, struct ifnet *, struct mbuf **, struct inpcb *);
2408 int pf_scan_sctp(struct pf_pdesc *);
2409 #if defined(INET) || defined(INET6)
2410 int pf_test(sa_family_t, int, int, struct ifnet *, struct mbuf **, struct inpcb *,
2411 struct pf_rule_actions *);
2412 #endif
2413 #ifdef INET
2414 int pf_normalize_ip(u_short *, struct pf_pdesc *);
2415 #endif /* INET */
2416
2417 #ifdef INET6
2418 int pf_normalize_ip6(int, u_short *, struct pf_pdesc *);
2419 void pf_poolmask(struct pf_addr *, struct pf_addr*,
2420 struct pf_addr *, struct pf_addr *, sa_family_t);
2421 void pf_addr_inc(struct pf_addr *, sa_family_t);
2422 int pf_max_frag_size(struct mbuf *);
2423 int pf_refragment6(struct ifnet *, struct mbuf **, struct m_tag *,
2424 struct ifnet *, bool);
2425 #endif /* INET6 */
2426
2427 int pf_multihome_scan_init(int, int, struct pf_pdesc *);
2428 int pf_multihome_scan_asconf(int, int, struct pf_pdesc *);
2429
2430 u_int32_t pf_new_isn(struct pf_kstate *);
2431 void *pf_pull_hdr(const struct mbuf *, int, void *, int, u_short *, u_short *,
2432 sa_family_t);
2433 void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t);
2434 void pf_change_proto_a(struct mbuf *, void *, u_int16_t *, u_int32_t,
2435 u_int8_t);
2436 void pf_change_tcp_a(struct mbuf *, void *, u_int16_t *, u_int32_t);
2437 void pf_patch_16_unaligned(struct mbuf *, u_int16_t *, void *, u_int16_t,
2438 bool, u_int8_t);
2439 void pf_patch_32_unaligned(struct mbuf *, u_int16_t *, void *, u_int32_t,
2440 bool, u_int8_t);
2441 void pf_send_deferred_syn(struct pf_kstate *);
2442 int pf_match_addr(u_int8_t, const struct pf_addr *,
2443 const struct pf_addr *, const struct pf_addr *, sa_family_t);
2444 int pf_match_addr_range(const struct pf_addr *, const struct pf_addr *,
2445 const struct pf_addr *, sa_family_t);
2446 int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t);
2447
2448 void pf_normalize_init(void);
2449 void pf_normalize_cleanup(void);
2450 int pf_normalize_tcp(struct pf_pdesc *);
2451 void pf_normalize_tcp_cleanup(struct pf_kstate *);
2452 int pf_normalize_tcp_init(struct pf_pdesc *,
2453 struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *);
2454 int pf_normalize_tcp_stateful(struct pf_pdesc *,
2455 u_short *, struct tcphdr *, struct pf_kstate *,
2456 struct pf_state_peer *, struct pf_state_peer *, int *);
2457 int pf_normalize_sctp_init(struct pf_pdesc *,
2458 struct pf_state_peer *, struct pf_state_peer *);
2459 int pf_normalize_sctp(struct pf_pdesc *);
2460 u_int32_t
2461 pf_state_expires(const struct pf_kstate *);
2462 void pf_purge_expired_fragments(void);
2463 void pf_purge_fragments(uint32_t);
2464 int pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kkif *,
2465 int);
2466 int pf_socket_lookup(struct pf_pdesc *);
2467 struct pf_state_key *pf_alloc_state_key(int);
2468 int pf_translate(struct pf_pdesc *, struct pf_addr *, u_int16_t,
2469 struct pf_addr *, u_int16_t, u_int16_t, int);
2470 int pf_translate_af(struct pf_pdesc *);
2471 void pfr_initialize(void);
2472 void pfr_cleanup(void);
2473 int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t);
2474 void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t,
2475 u_int64_t, int, int, int);
2476 int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, sa_family_t,
2477 pf_addr_filter_func_t);
2478 void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *);
2479 struct pfr_ktable *
2480 pfr_attach_table(struct pf_kruleset *, char *);
2481 struct pfr_ktable *
2482 pfr_eth_attach_table(struct pf_keth_ruleset *, char *);
2483 void pfr_detach_table(struct pfr_ktable *);
2484 int pfr_clr_tables(struct pfr_table *, int *, int);
2485 int pfr_add_tables(struct pfr_table *, int, int *, int);
2486 int pfr_del_tables(struct pfr_table *, int, int *, int);
2487 int pfr_table_count(struct pfr_table *, int);
2488 int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int);
2489 int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int);
2490 int pfr_clr_tstats(struct pfr_table *, int, int *, int);
2491 int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int);
2492 int pfr_clr_addrs(struct pfr_table *, int *, int);
2493 int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *, time_t);
2494 int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
2495 int);
2496 int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
2497 int);
2498 int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
2499 int *, int *, int *, int, u_int32_t);
2500 int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int);
2501 int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int);
2502 int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *,
2503 int);
2504 int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
2505 int);
2506 int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int);
2507 int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int);
2508 int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int);
2509 int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *,
2510 int *, u_int32_t, int);
2511
2512 MALLOC_DECLARE(PFI_MTYPE);
2513 VNET_DECLARE(struct pfi_kkif *, pfi_all);
2514 #define V_pfi_all VNET(pfi_all)
2515
2516 void pfi_initialize(void);
2517 void pfi_initialize_vnet(void);
2518 void pfi_cleanup(void);
2519 void pfi_cleanup_vnet(void);
2520 void pfi_kkif_ref(struct pfi_kkif *);
2521 void pfi_kkif_unref(struct pfi_kkif *);
2522 struct pfi_kkif *pfi_kkif_find(const char *);
2523 struct pfi_kkif *pfi_kkif_attach(struct pfi_kkif *, const char *);
2524 int pfi_kkif_match(struct pfi_kkif *, struct pfi_kkif *);
2525 void pfi_kkif_purge(void);
2526 int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *,
2527 sa_family_t);
2528 int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t);
2529 void pfi_dynaddr_remove(struct pfi_dynaddr *);
2530 void pfi_dynaddr_copyout(struct pf_addr_wrap *);
2531 void pfi_update_status(const char *, struct pf_status *);
2532 void pfi_get_ifaces(const char *, struct pfi_kif *, int *);
2533 int pfi_set_flags(const char *, int);
2534 int pfi_clear_flags(const char *, int);
2535
2536 int pf_match_tag(struct mbuf *, struct pf_krule *, int *, int);
2537 int pf_tag_packet(struct pf_pdesc *, int);
2538 int pf_addr_cmp(struct pf_addr *, struct pf_addr *,
2539 sa_family_t);
2540
2541 u_int16_t pf_get_mss(struct pf_pdesc *);
2542 u_int8_t pf_get_wscale(struct pf_pdesc *);
2543 struct mbuf *pf_build_tcp(const struct pf_krule *, sa_family_t,
2544 const struct pf_addr *, const struct pf_addr *,
2545 u_int16_t, u_int16_t, u_int32_t, u_int32_t,
2546 u_int8_t, u_int16_t, u_int16_t, u_int8_t, int,
2547 u_int16_t, u_int16_t, int);
2548 void pf_send_tcp(const struct pf_krule *, sa_family_t,
2549 const struct pf_addr *, const struct pf_addr *,
2550 u_int16_t, u_int16_t, u_int32_t, u_int32_t,
2551 u_int8_t, u_int16_t, u_int16_t, u_int8_t, int,
2552 u_int16_t, u_int16_t, int);
2553
2554 void pf_syncookies_init(void);
2555 void pf_syncookies_cleanup(void);
2556 int pf_get_syncookies(struct pfioc_nv *);
2557 int pf_set_syncookies(struct pfioc_nv *);
2558 int pf_synflood_check(struct pf_pdesc *);
2559 void pf_syncookie_send(struct pf_pdesc *);
2560 bool pf_syncookie_check(struct pf_pdesc *);
2561 u_int8_t pf_syncookie_validate(struct pf_pdesc *);
2562 struct mbuf * pf_syncookie_recreate_syn(struct pf_pdesc *);
2563
2564 VNET_DECLARE(struct pf_kstatus, pf_status);
2565 #define V_pf_status VNET(pf_status)
2566
2567 struct pf_limit {
2568 uma_zone_t zone;
2569 u_int limit;
2570 };
2571 VNET_DECLARE(struct pf_limit, pf_limits[PF_LIMIT_MAX]);
2572 #define V_pf_limits VNET(pf_limits)
2573
2574 #endif /* _KERNEL */
2575
2576 #ifdef _KERNEL
2577 struct pf_nl_pooladdr {
2578 u_int32_t action;
2579 u_int32_t ticket;
2580 u_int32_t nr;
2581 u_int32_t r_num;
2582 u_int8_t r_action;
2583 u_int8_t r_last;
2584 u_int8_t af;
2585 char anchor[MAXPATHLEN];
2586 struct pf_pooladdr addr;
2587 /* Above this is identical to pfioc_pooladdr */
2588 int which;
2589 };
2590
2591 VNET_DECLARE(struct pf_kanchor_global, pf_anchors);
2592 #define V_pf_anchors VNET(pf_anchors)
2593 VNET_DECLARE(struct pf_kanchor, pf_main_anchor);
2594 #define V_pf_main_anchor VNET(pf_main_anchor)
2595 VNET_DECLARE(struct pf_keth_anchor_global, pf_keth_anchors);
2596 #define V_pf_keth_anchors VNET(pf_keth_anchors)
2597 #define pf_main_ruleset V_pf_main_anchor.ruleset
2598
2599 VNET_DECLARE(struct pf_keth_anchor, pf_main_keth_anchor);
2600 #define V_pf_main_keth_anchor VNET(pf_main_keth_anchor)
2601 VNET_DECLARE(struct pf_keth_ruleset*, pf_keth);
2602 #define V_pf_keth VNET(pf_keth)
2603
2604 void pf_init_kruleset(struct pf_kruleset *);
2605 void pf_init_keth(struct pf_keth_ruleset *);
2606 int pf_kanchor_setup(struct pf_krule *,
2607 const struct pf_kruleset *, const char *);
2608 int pf_kanchor_copyout(const struct pf_kruleset *,
2609 const struct pf_krule *, char *, size_t);
2610 int pf_kanchor_nvcopyout(const struct pf_kruleset *,
2611 const struct pf_krule *, nvlist_t *);
2612 void pf_kanchor_remove(struct pf_krule *);
2613 void pf_remove_if_empty_kruleset(struct pf_kruleset *);
2614 struct pf_kruleset *pf_find_kruleset(const char *);
2615 struct pf_kruleset *pf_find_or_create_kruleset(const char *);
2616 void pf_rs_initialize(void);
2617
2618
2619 struct pf_krule *pf_krule_alloc(void);
2620
2621 void pf_remove_if_empty_keth_ruleset(
2622 struct pf_keth_ruleset *);
2623 struct pf_keth_ruleset *pf_find_keth_ruleset(const char *);
2624 struct pf_keth_anchor *pf_find_keth_anchor(const char *);
2625 int pf_keth_anchor_setup(struct pf_keth_rule *,
2626 const struct pf_keth_ruleset *, const char *);
2627 int pf_keth_anchor_nvcopyout(
2628 const struct pf_keth_ruleset *,
2629 const struct pf_keth_rule *, nvlist_t *);
2630 struct pf_keth_ruleset *pf_find_or_create_keth_ruleset(const char *);
2631 void pf_keth_anchor_remove(struct pf_keth_rule *);
2632
2633 int pf_ioctl_getrules(struct pfioc_rule *);
2634 int pf_ioctl_addrule(struct pf_krule *, uint32_t,
2635 uint32_t, const char *, const char *, uid_t uid,
2636 pid_t);
2637 void pf_ioctl_clear_status(void);
2638 int pf_ioctl_get_timeout(int, int *);
2639 int pf_ioctl_set_timeout(int, int, int *);
2640 int pf_ioctl_get_limit(int, unsigned int *);
2641 int pf_ioctl_set_limit(int, unsigned int, unsigned int *);
2642 int pf_ioctl_begin_addrs(uint32_t *);
2643 int pf_ioctl_add_addr(struct pf_nl_pooladdr *);
2644 int pf_ioctl_get_addrs(struct pf_nl_pooladdr *);
2645 int pf_ioctl_get_addr(struct pf_nl_pooladdr *);
2646 int pf_ioctl_get_rulesets(struct pfioc_ruleset *);
2647 int pf_ioctl_get_ruleset(struct pfioc_ruleset *);
2648
2649 void pf_krule_free(struct pf_krule *);
2650 void pf_krule_clear_counters(struct pf_krule *);
2651 void pf_addr_copyout(struct pf_addr_wrap *);
2652 #endif
2653
2654 /* The fingerprint functions can be linked into userland programs (tcpdump) */
2655 int pf_osfp_add(struct pf_osfp_ioctl *);
2656 #ifdef _KERNEL
2657 struct pf_osfp_enlist *
2658 pf_osfp_fingerprint(struct pf_pdesc *, const struct tcphdr *);
2659 #endif /* _KERNEL */
2660 void pf_osfp_flush(void);
2661 int pf_osfp_get(struct pf_osfp_ioctl *);
2662 int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t);
2663
2664 #ifdef _KERNEL
2665 void pf_print_host(struct pf_addr *, u_int16_t, sa_family_t);
2666
2667 void pf_step_into_anchor(struct pf_kanchor_stackframe *, int *,
2668 struct pf_kruleset **, int, struct pf_krule **,
2669 struct pf_krule **);
2670 int pf_step_out_of_anchor(struct pf_kanchor_stackframe *, int *,
2671 struct pf_kruleset **, int, struct pf_krule **,
2672 struct pf_krule **, int *);
2673 void pf_step_into_keth_anchor(struct pf_keth_anchor_stackframe *,
2674 int *, struct pf_keth_ruleset **,
2675 struct pf_keth_rule **, struct pf_keth_rule **,
2676 int *);
2677 int pf_step_out_of_keth_anchor(struct pf_keth_anchor_stackframe *,
2678 int *, struct pf_keth_ruleset **,
2679 struct pf_keth_rule **, struct pf_keth_rule **,
2680 int *);
2681
2682 u_short pf_map_addr(u_int8_t, struct pf_krule *,
2683 struct pf_addr *, struct pf_addr *,
2684 struct pfi_kkif **nkif, struct pf_addr *,
2685 struct pf_kpool *);
2686 u_short pf_map_addr_sn(u_int8_t, struct pf_krule *,
2687 struct pf_addr *, struct pf_addr *,
2688 struct pfi_kkif **nkif, struct pf_addr *,
2689 struct pf_ksrc_node **, struct pf_srchash **,
2690 struct pf_kpool *, pf_sn_types_t);
2691 int pf_get_transaddr_af(struct pf_krule *,
2692 struct pf_pdesc *);
2693 u_short pf_get_translation(struct pf_pdesc *,
2694 int, struct pf_state_key **, struct pf_state_key **,
2695 struct pf_kanchor_stackframe *, struct pf_krule **,
2696 struct pf_udp_mapping **udp_mapping);
2697
2698 int pf_state_key_setup(struct pf_pdesc *,
2699 u_int16_t, u_int16_t,
2700 struct pf_state_key **sk, struct pf_state_key **nk);
2701 struct pf_state_key *pf_state_key_clone(const struct pf_state_key *);
2702 void pf_rule_to_actions(struct pf_krule *,
2703 struct pf_rule_actions *);
2704 int pf_normalize_mss(struct pf_pdesc *pd);
2705 #if defined(INET) || defined(INET6)
2706 void pf_scrub(struct pf_pdesc *);
2707 #endif
2708
2709 struct pfi_kkif *pf_kkif_create(int);
2710 void pf_kkif_free(struct pfi_kkif *);
2711 void pf_kkif_zero(struct pfi_kkif *);
2712
2713
2714 /* NAT64 functions. */
2715 int inet_nat64(int, const void *, void *, const void *, u_int8_t);
2716 int inet_nat64_inet(const void *, void *, const void *, u_int8_t);
2717 int inet_nat64_inet6(const void *, void *, const void *, u_int8_t);
2718
2719 int inet_nat46(int, const void *, void *, const void *, u_int8_t);
2720 int inet_nat46_inet(const void *, void *, const void *, u_int8_t);
2721 int inet_nat46_inet6(const void *, void *, const void *, u_int8_t);
2722
2723 #endif /* _KERNEL */
2724
2725 #endif /* _NET_PFVAR_H_ */
2726