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 SDT_PROBE_DECLARE(pf, , test, reason_set);
334
335 struct pfi_dynaddr {
336 TAILQ_ENTRY(pfi_dynaddr) entry;
337 struct pf_addr pfid_addr4;
338 struct pf_addr pfid_mask4;
339 struct pf_addr pfid_addr6;
340 struct pf_addr pfid_mask6;
341 struct pfr_ktable *pfid_kt;
342 struct pfi_kkif *pfid_kif;
343 int pfid_net; /* mask or 128 */
344 int pfid_acnt4; /* address count IPv4 */
345 int pfid_acnt6; /* address count IPv6 */
346 sa_family_t pfid_af; /* rule af */
347 u_int8_t pfid_iflags; /* PFI_AFLAG_* */
348 };
349
350 #define PF_NAME "pf"
351
352 #define PF_HASHROW_ASSERT(h) mtx_assert(&(h)->lock, MA_OWNED)
353 #define PF_HASHROW_LOCK(h) mtx_lock(&(h)->lock)
354 #define PF_HASHROW_UNLOCK(h) mtx_unlock(&(h)->lock)
355
356 #ifdef INVARIANTS
357 #define PF_STATE_LOCK(s) \
358 do { \
359 struct pf_kstate *_s = (s); \
360 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(_s)]; \
361 MPASS(_s->lock == &_ih->lock); \
362 mtx_lock(_s->lock); \
363 } while (0)
364 #define PF_STATE_UNLOCK(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_unlock(_s->lock); \
370 } while (0)
371 #else
372 #define PF_STATE_LOCK(s) mtx_lock((s)->lock)
373 #define PF_STATE_UNLOCK(s) mtx_unlock((s)->lock)
374 #endif
375
376 #ifdef INVARIANTS
377 #define PF_STATE_LOCK_ASSERT(s) \
378 do { \
379 struct pf_kstate *_s = (s); \
380 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(_s)]; \
381 MPASS(_s->lock == &_ih->lock); \
382 PF_HASHROW_ASSERT(_ih); \
383 } while (0)
384 #else /* !INVARIANTS */
385 #define PF_STATE_LOCK_ASSERT(s) do {} while (0)
386 #endif /* INVARIANTS */
387
388 #ifdef INVARIANTS
389 #define PF_SRC_NODE_LOCK(sn) \
390 do { \
391 struct pf_ksrc_node *_sn = (sn); \
392 struct pf_srchash *_sh = &V_pf_srchash[ \
393 pf_hashsrc(&_sn->addr, _sn->af)]; \
394 MPASS(_sn->lock == &_sh->lock); \
395 mtx_lock(_sn->lock); \
396 } while (0)
397 #define PF_SRC_NODE_UNLOCK(sn) \
398 do { \
399 struct pf_ksrc_node *_sn = (sn); \
400 struct pf_srchash *_sh = &V_pf_srchash[ \
401 pf_hashsrc(&_sn->addr, _sn->af)]; \
402 MPASS(_sn->lock == &_sh->lock); \
403 mtx_unlock(_sn->lock); \
404 } while (0)
405 #else
406 #define PF_SRC_NODE_LOCK(sn) mtx_lock((sn)->lock)
407 #define PF_SRC_NODE_UNLOCK(sn) mtx_unlock((sn)->lock)
408 #endif
409
410 #ifdef INVARIANTS
411 #define PF_SRC_NODE_LOCK_ASSERT(sn) \
412 do { \
413 struct pf_ksrc_node *_sn = (sn); \
414 struct pf_srchash *_sh = &V_pf_srchash[ \
415 pf_hashsrc(&_sn->addr, _sn->af)]; \
416 MPASS(_sn->lock == &_sh->lock); \
417 PF_HASHROW_ASSERT(_sh); \
418 } while (0)
419 #else /* !INVARIANTS */
420 #define PF_SRC_NODE_LOCK_ASSERT(sn) do {} while (0)
421 #endif /* INVARIANTS */
422
423 extern struct mtx_padalign pf_unlnkdrules_mtx;
424 #define PF_UNLNKDRULES_LOCK() mtx_lock(&pf_unlnkdrules_mtx)
425 #define PF_UNLNKDRULES_UNLOCK() mtx_unlock(&pf_unlnkdrules_mtx)
426 #define PF_UNLNKDRULES_ASSERT() mtx_assert(&pf_unlnkdrules_mtx, MA_OWNED)
427
428 extern struct sx pf_config_lock;
429 #define PF_CONFIG_LOCK() sx_xlock(&pf_config_lock)
430 #define PF_CONFIG_UNLOCK() sx_xunlock(&pf_config_lock)
431 #define PF_CONFIG_ASSERT() sx_assert(&pf_config_lock, SA_XLOCKED)
432
433 VNET_DECLARE(struct rmlock, pf_rules_lock);
434 #define V_pf_rules_lock VNET(pf_rules_lock)
435
436 #define PF_RULES_RLOCK_TRACKER struct rm_priotracker _pf_rules_tracker
437 #define PF_RULES_RLOCK() rm_rlock(&V_pf_rules_lock, &_pf_rules_tracker)
438 #define PF_RULES_RUNLOCK() rm_runlock(&V_pf_rules_lock, &_pf_rules_tracker)
439 #define PF_RULES_WLOCK() rm_wlock(&V_pf_rules_lock)
440 #define PF_RULES_WUNLOCK() rm_wunlock(&V_pf_rules_lock)
441 #define PF_RULES_WOWNED() rm_wowned(&V_pf_rules_lock)
442 #define PF_RULES_ASSERT() rm_assert(&V_pf_rules_lock, RA_LOCKED)
443 #define PF_RULES_RASSERT() rm_assert(&V_pf_rules_lock, RA_RLOCKED)
444 #define PF_RULES_WASSERT() rm_assert(&V_pf_rules_lock, RA_WLOCKED)
445
446 extern struct mtx_padalign pf_table_stats_lock;
447 #define PF_TABLE_STATS_LOCK() mtx_lock(&pf_table_stats_lock)
448 #define PF_TABLE_STATS_UNLOCK() mtx_unlock(&pf_table_stats_lock)
449 #define PF_TABLE_STATS_OWNED() mtx_owned(&pf_table_stats_lock)
450 #define PF_TABLE_STATS_ASSERT() mtx_assert(&pf_table_stats_lock, MA_OWNED)
451
452 extern struct sx pf_end_lock;
453
454 #define PF_MODVER 1
455 #define PFLOG_MODVER 1
456 #define PFSYNC_MODVER 1
457
458 #define PFLOG_MINVER 1
459 #define PFLOG_PREFVER PFLOG_MODVER
460 #define PFLOG_MAXVER 1
461 #define PFSYNC_MINVER 1
462 #define PFSYNC_PREFVER PFSYNC_MODVER
463 #define PFSYNC_MAXVER 1
464
465 #ifdef INET
466 #ifndef INET6
467 #define PF_INET_ONLY
468 #endif /* ! INET6 */
469 #endif /* INET */
470
471 #ifdef INET6
472 #ifndef INET
473 #define PF_INET6_ONLY
474 #endif /* ! INET */
475 #endif /* INET6 */
476
477 #ifdef INET
478 #ifdef INET6
479 #define PF_INET_INET6
480 #endif /* INET6 */
481 #endif /* INET */
482
483 #else
484
485 #define PF_INET_INET6
486
487 #endif /* _KERNEL */
488
489 /* Both IPv4 and IPv6 */
490 #ifdef PF_INET_INET6
491
492 #define PF_AEQ(a, b, c) \
493 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \
494 (c == AF_INET6 && (a)->addr32[3] == (b)->addr32[3] && \
495 (a)->addr32[2] == (b)->addr32[2] && \
496 (a)->addr32[1] == (b)->addr32[1] && \
497 (a)->addr32[0] == (b)->addr32[0])) \
498
499 #define PF_ANEQ(a, b, c) \
500 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \
501 (c == AF_INET6 && ((a)->addr32[0] != (b)->addr32[0] || \
502 (a)->addr32[1] != (b)->addr32[1] || \
503 (a)->addr32[2] != (b)->addr32[2] || \
504 (a)->addr32[3] != (b)->addr32[3]))) \
505
506 #define PF_AZERO(a, c) \
507 ((c == AF_INET && !(a)->addr32[0]) || \
508 (c == AF_INET6 && !(a)->addr32[0] && !(a)->addr32[1] && \
509 !(a)->addr32[2] && !(a)->addr32[3] )) \
510
511 #else
512
513 /* Just IPv6 */
514
515 #ifdef PF_INET6_ONLY
516
517 #define PF_AEQ(a, b, c) \
518 ((a)->addr32[3] == (b)->addr32[3] && \
519 (a)->addr32[2] == (b)->addr32[2] && \
520 (a)->addr32[1] == (b)->addr32[1] && \
521 (a)->addr32[0] == (b)->addr32[0]) \
522
523 #define PF_ANEQ(a, b, c) \
524 ((a)->addr32[3] != (b)->addr32[3] || \
525 (a)->addr32[2] != (b)->addr32[2] || \
526 (a)->addr32[1] != (b)->addr32[1] || \
527 (a)->addr32[0] != (b)->addr32[0]) \
528
529 #define PF_AZERO(a, c) \
530 (!(a)->addr32[0] && \
531 !(a)->addr32[1] && \
532 !(a)->addr32[2] && \
533 !(a)->addr32[3] ) \
534
535 #else
536
537 /* Just IPv4 */
538 #ifdef PF_INET_ONLY
539
540 #define PF_AEQ(a, b, c) \
541 ((a)->addr32[0] == (b)->addr32[0])
542
543 #define PF_ANEQ(a, b, c) \
544 ((a)->addr32[0] != (b)->addr32[0])
545
546 #define PF_AZERO(a, c) \
547 (!(a)->addr32[0])
548
549 #endif /* PF_INET_ONLY */
550 #endif /* PF_INET6_ONLY */
551 #endif /* PF_INET_INET6 */
552
553 #ifdef _KERNEL
554
555 void unhandled_af(int) __dead2;
556
557 static void inline
pf_addrcpy(struct pf_addr * dst,const struct pf_addr * src,sa_family_t af)558 pf_addrcpy(struct pf_addr *dst, const struct pf_addr *src, sa_family_t af)
559 {
560 switch (af) {
561 #ifdef INET
562 case AF_INET:
563 memcpy(&dst->v4, &src->v4, sizeof(dst->v4));
564 break;
565 #endif /* INET */
566 #ifdef INET6
567 case AF_INET6:
568 memcpy(&dst->v6, &src->v6, sizeof(dst->v6));
569 break;
570 #endif /* INET6 */
571 default:
572 unhandled_af(af);
573 }
574 }
575 #endif
576
577 /*
578 * XXX callers not FIB-aware in our version of pf yet.
579 * OpenBSD fixed it later it seems, 2010/05/07 13:33:16 claudio.
580 */
581 #define PF_MISMATCHAW(aw, x, af, neg, ifp, rtid) \
582 ( \
583 (((aw)->type == PF_ADDR_NOROUTE && \
584 pf_routable((x), (af), NULL, (rtid))) || \
585 (((aw)->type == PF_ADDR_URPFFAILED && (ifp) != NULL && \
586 pf_routable((x), (af), (ifp), (rtid))) || \
587 ((aw)->type == PF_ADDR_TABLE && \
588 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \
589 ((aw)->type == PF_ADDR_DYNIFTL && \
590 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \
591 ((aw)->type == PF_ADDR_RANGE && \
592 !pf_match_addr_range(&(aw)->v.a.addr, \
593 &(aw)->v.a.mask, (x), (af))) || \
594 ((aw)->type == PF_ADDR_ADDRMASK && \
595 !PF_AZERO(&(aw)->v.a.mask, (af)) && \
596 !pf_match_addr(0, &(aw)->v.a.addr, \
597 &(aw)->v.a.mask, (x), (af))))) != \
598 (neg) \
599 )
600
601 #define PF_ALGNMNT(off) (((off) % 2) == 0)
602
603 /*
604 * At the moment there are no rules which have both NAT and RDR actions,
605 * apart from af-to rules, but those don't to source tracking for address
606 * translation. And the r->rdr pool is used for both NAT and RDR.
607 * So there is no PF_SN_RDR.
608 */
609 enum pf_sn_types { PF_SN_LIMIT, PF_SN_NAT, PF_SN_ROUTE, PF_SN_MAX };
610 typedef enum pf_sn_types pf_sn_types_t;
611 #define PF_SN_TYPE_NAMES { \
612 "limit source-track", \
613 "NAT/RDR sticky-address", \
614 "route sticky-address", \
615 NULL \
616 }
617
618 #ifdef _KERNEL
619
620 struct pf_kpooladdr {
621 struct pf_addr_wrap addr;
622 TAILQ_ENTRY(pf_kpooladdr) entries;
623 char ifname[IFNAMSIZ];
624 struct pfi_kkif *kif;
625 };
626
627 TAILQ_HEAD(pf_kpalist, pf_kpooladdr);
628
629 struct pf_kpool {
630 struct mtx mtx;
631 struct pf_kpalist list;
632 struct pf_kpooladdr *cur;
633 struct pf_poolhashkey key;
634 struct pf_addr counter;
635 struct pf_mape_portset mape;
636 int tblidx;
637 u_int16_t proxy_port[2];
638 u_int8_t opts;
639 };
640
641 struct pf_rule_actions {
642 struct pf_addr rt_addr;
643 struct pfi_kkif *rt_kif;
644 int32_t rtableid;
645 uint32_t flags;
646 uint16_t qid;
647 uint16_t pqid;
648 uint16_t max_mss;
649 uint16_t dnpipe;
650 uint16_t dnrpipe; /* Reverse direction pipe */
651 uint8_t log;
652 uint8_t set_tos;
653 uint8_t min_ttl;
654 uint8_t set_prio[2];
655 uint8_t rt;
656 uint8_t allow_opts;
657 uint16_t max_pkt_size;
658 };
659
660 union pf_keth_rule_ptr {
661 struct pf_keth_rule *ptr;
662 uint32_t nr;
663 };
664
665 struct pf_keth_rule_addr {
666 uint8_t addr[ETHER_ADDR_LEN];
667 uint8_t mask[ETHER_ADDR_LEN];
668 bool neg;
669 uint8_t isset;
670 };
671
672 struct pf_keth_anchor;
673
674 TAILQ_HEAD(pf_keth_ruleq, pf_keth_rule);
675
676 struct pf_keth_ruleset {
677 struct pf_keth_ruleq rules[2];
678 struct pf_keth_rules {
679 struct pf_keth_ruleq *rules;
680 int open;
681 uint32_t ticket;
682 } active, inactive;
683 struct vnet *vnet;
684 struct pf_keth_anchor *anchor;
685 };
686
687 RB_HEAD(pf_keth_anchor_global, pf_keth_anchor);
688 RB_HEAD(pf_keth_anchor_node, pf_keth_anchor);
689 struct pf_keth_anchor {
690 RB_ENTRY(pf_keth_anchor) entry_node;
691 RB_ENTRY(pf_keth_anchor) entry_global;
692 struct pf_keth_anchor *parent;
693 struct pf_keth_anchor_node children;
694 char name[PF_ANCHOR_NAME_SIZE];
695 char path[MAXPATHLEN];
696 struct pf_keth_ruleset ruleset;
697 int refcnt; /* anchor rules */
698 uint8_t anchor_relative;
699 uint8_t anchor_wildcard;
700 };
701 RB_PROTOTYPE(pf_keth_anchor_node, pf_keth_anchor, entry_node,
702 pf_keth_anchor_compare);
703 RB_PROTOTYPE(pf_keth_anchor_global, pf_keth_anchor, entry_global,
704 pf_keth_anchor_compare);
705
706 struct pf_keth_rule {
707 #define PFE_SKIP_IFP 0
708 #define PFE_SKIP_DIR 1
709 #define PFE_SKIP_PROTO 2
710 #define PFE_SKIP_SRC_ADDR 3
711 #define PFE_SKIP_DST_ADDR 4
712 #define PFE_SKIP_SRC_IP_ADDR 5
713 #define PFE_SKIP_DST_IP_ADDR 6
714 #define PFE_SKIP_COUNT 7
715 union pf_keth_rule_ptr skip[PFE_SKIP_COUNT];
716
717 TAILQ_ENTRY(pf_keth_rule) entries;
718
719 struct pf_keth_anchor *anchor;
720 u_int8_t anchor_relative;
721 u_int8_t anchor_wildcard;
722
723 uint32_t nr;
724
725 bool quick;
726
727 /* Filter */
728 char ifname[IFNAMSIZ];
729 struct pfi_kkif *kif;
730 bool ifnot;
731 uint8_t direction;
732 uint16_t proto;
733 struct pf_keth_rule_addr src, dst;
734 struct pf_rule_addr ipsrc, ipdst;
735 char match_tagname[PF_TAG_NAME_SIZE];
736 uint16_t match_tag;
737 bool match_tag_not;
738
739
740 /* Stats */
741 counter_u64_t evaluations;
742 counter_u64_t packets[2];
743 counter_u64_t bytes[2];
744 time_t *timestamp;
745
746 /* Action */
747 char qname[PF_QNAME_SIZE];
748 int qid;
749 char tagname[PF_TAG_NAME_SIZE];
750 uint16_t tag;
751 char bridge_to_name[IFNAMSIZ];
752 struct pfi_kkif *bridge_to;
753 uint8_t action;
754 uint16_t dnpipe;
755 uint32_t dnflags;
756
757 char label[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE];
758 uint32_t ridentifier;
759 };
760
761 struct pf_kthreshold {
762 uint32_t limit;
763 uint32_t seconds;
764 struct counter_rate *cr;
765 };
766
767 RB_HEAD(pf_krule_global, pf_krule);
768 RB_PROTOTYPE(pf_krule_global, pf_krule, entry_global, pf_krule_compare);
769
770 struct pf_krule {
771 struct pf_rule_addr src;
772 struct pf_rule_addr dst;
773 struct pf_krule *skip[PF_SKIP_COUNT];
774 char label[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE];
775 uint32_t ridentifier;
776 char ifname[IFNAMSIZ];
777 char rcv_ifname[IFNAMSIZ];
778 char qname[PF_QNAME_SIZE];
779 char pqname[PF_QNAME_SIZE];
780 char tagname[PF_TAG_NAME_SIZE];
781 char match_tagname[PF_TAG_NAME_SIZE];
782
783 char overload_tblname[PF_TABLE_NAME_SIZE];
784
785 TAILQ_ENTRY(pf_krule) entries;
786 struct pf_kpool nat;
787 struct pf_kpool rdr;
788 struct pf_kpool route;
789 struct pf_kthreshold pktrate;
790
791 struct pf_counter_u64 evaluations;
792 struct pf_counter_u64 packets[2];
793 struct pf_counter_u64 bytes[2];
794 time_t *timestamp;
795
796 struct pfi_kkif *kif;
797 struct pfi_kkif *rcv_kif;
798 struct pf_kanchor *anchor;
799 struct pfr_ktable *overload_tbl;
800
801 pf_osfp_t os_fingerprint;
802
803 int32_t rtableid;
804 u_int32_t timeout[PFTM_MAX];
805 u_int32_t max_states;
806 u_int32_t max_src_nodes;
807 u_int32_t max_src_states;
808 u_int32_t max_src_conn;
809 struct {
810 u_int32_t limit;
811 u_int32_t seconds;
812 } max_src_conn_rate;
813 uint16_t max_pkt_size;
814 u_int16_t qid;
815 u_int16_t pqid;
816 u_int16_t dnpipe;
817 u_int16_t dnrpipe;
818 u_int32_t free_flags;
819 u_int32_t nr;
820 u_int32_t prob;
821 uid_t cuid;
822 pid_t cpid;
823
824 counter_u64_t states_cur;
825 counter_u64_t states_tot;
826 counter_u64_t src_nodes[PF_SN_MAX];
827
828 u_int16_t return_icmp;
829 u_int16_t return_icmp6;
830 u_int16_t max_mss;
831 u_int16_t tag;
832 u_int16_t match_tag;
833 u_int16_t scrub_flags;
834
835 struct pf_rule_uid uid;
836 struct pf_rule_gid gid;
837
838 u_int32_t rule_flag;
839 uint32_t rule_ref;
840 u_int8_t action;
841 u_int8_t direction;
842 u_int8_t log;
843 u_int8_t logif;
844 u_int8_t quick;
845 u_int8_t ifnot;
846 u_int8_t match_tag_not;
847 u_int8_t natpass;
848
849 u_int8_t keep_state;
850 sa_family_t af;
851 u_int8_t proto;
852 u_int8_t type;
853 u_int8_t code;
854 u_int8_t flags;
855 u_int8_t flagset;
856 u_int8_t min_ttl;
857 u_int8_t allow_opts;
858 u_int8_t rt;
859 u_int8_t return_ttl;
860 u_int8_t tos;
861 u_int8_t set_tos;
862 u_int8_t anchor_relative;
863 u_int8_t anchor_wildcard;
864
865 u_int8_t flush;
866 u_int8_t prio;
867 u_int8_t set_prio[2];
868 sa_family_t naf;
869 u_int8_t rcvifnot;
870
871 struct {
872 struct pf_addr addr;
873 u_int16_t port;
874 } divert;
875 u_int8_t md5sum[PF_MD5_DIGEST_LENGTH];
876 RB_ENTRY(pf_krule) entry_global;
877
878 #ifdef PF_WANT_32_TO_64_COUNTER
879 LIST_ENTRY(pf_krule) allrulelist;
880 bool allrulelinked;
881 #endif
882 };
883
884 struct pf_krule_item {
885 SLIST_ENTRY(pf_krule_item) entry;
886 struct pf_krule *r;
887 };
888
889 SLIST_HEAD(pf_krule_slist, pf_krule_item);
890
891 struct pf_ksrc_node {
892 LIST_ENTRY(pf_ksrc_node) entry;
893 struct pf_addr addr;
894 struct pf_addr raddr;
895 struct pf_krule_slist match_rules;
896 struct pf_krule *rule;
897 struct pfi_kkif *rkif;
898 counter_u64_t bytes[2];
899 counter_u64_t packets[2];
900 u_int32_t states;
901 u_int32_t conn;
902 struct pf_kthreshold conn_rate;
903 u_int32_t creation;
904 u_int32_t expire;
905 sa_family_t af;
906 sa_family_t naf;
907 u_int8_t ruletype;
908 pf_sn_types_t type;
909 struct mtx *lock;
910 };
911 #endif
912
913 struct pf_state_scrub {
914 struct timeval pfss_last; /* time received last packet */
915 u_int32_t pfss_tsecr; /* last echoed timestamp */
916 u_int32_t pfss_tsval; /* largest timestamp */
917 u_int32_t pfss_tsval0; /* original timestamp */
918 u_int16_t pfss_flags;
919 #define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */
920 #define PFSS_PAWS 0x0010 /* stricter PAWS checks */
921 #define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */
922 #define PFSS_DATA_TS 0x0040 /* timestamp on data packets */
923 #define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */
924 u_int8_t pfss_ttl; /* stashed TTL */
925 u_int8_t pad;
926 union {
927 u_int32_t pfss_ts_mod; /* timestamp modulation */
928 u_int32_t pfss_v_tag; /* SCTP verification tag */
929 };
930 };
931
932 struct pf_state_host {
933 struct pf_addr addr;
934 u_int16_t port;
935 u_int16_t pad;
936 };
937
938 struct pf_state_peer {
939 struct pf_state_scrub *scrub; /* state is scrubbed */
940 u_int32_t seqlo; /* Max sequence number sent */
941 u_int32_t seqhi; /* Max the other end ACKd + win */
942 u_int32_t seqdiff; /* Sequence number modulator */
943 u_int16_t max_win; /* largest window (pre scaling) */
944 u_int16_t mss; /* Maximum segment size option */
945 u_int8_t state; /* active state level */
946 u_int8_t wscale; /* window scaling factor */
947 u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */
948 u_int8_t pad[1];
949 };
950
951 /* Keep synced with struct pf_udp_endpoint. */
952 struct pf_udp_endpoint_cmp {
953 struct pf_addr addr;
954 uint16_t port;
955 sa_family_t af;
956 uint8_t pad[1];
957 };
958
959 struct pf_udp_endpoint {
960 struct pf_addr addr;
961 uint16_t port;
962 sa_family_t af;
963 uint8_t pad[1];
964
965 struct pf_udp_mapping *mapping;
966 LIST_ENTRY(pf_udp_endpoint) entry;
967 };
968
969 struct pf_udp_mapping {
970 struct pf_udp_endpoint endpoints[2];
971 u_int refs;
972 };
973
974 /* Keep synced with struct pf_state_key. */
975 struct pf_state_key_cmp {
976 struct pf_addr addr[2];
977 u_int16_t port[2];
978 sa_family_t af;
979 u_int8_t proto;
980 u_int8_t pad[2];
981 };
982
983 struct pf_state_key {
984 struct pf_addr addr[2];
985 u_int16_t port[2];
986 sa_family_t af;
987 u_int8_t proto;
988 u_int8_t pad[2];
989
990 LIST_ENTRY(pf_state_key) entry;
991 TAILQ_HEAD(, pf_kstate) states[2];
992 };
993
994 #define PF_REVERSED_KEY(state, family) \
995 (((state)->key[PF_SK_WIRE]->af != (state)->key[PF_SK_STACK]->af) && \
996 ((state)->key[PF_SK_WIRE]->af != (family)) && \
997 ((state)->direction == PF_IN))
998
999 /* Keep synced with struct pf_kstate. */
1000 struct pf_state_cmp {
1001 u_int64_t id;
1002 u_int32_t creatorid;
1003 u_int8_t direction;
1004 u_int8_t pad[3];
1005 };
1006
1007 struct pf_state_scrub_export {
1008 uint16_t pfss_flags;
1009 uint8_t pfss_ttl; /* stashed TTL */
1010 #define PF_SCRUB_FLAG_VALID 0x01
1011 uint8_t scrub_flag;
1012 uint32_t pfss_ts_mod; /* timestamp modulation */
1013 };
1014
1015 struct pf_state_key_export {
1016 struct pf_addr addr[2];
1017 uint16_t port[2];
1018 };
1019
1020 struct pf_state_peer_export {
1021 struct pf_state_scrub_export scrub; /* state is scrubbed */
1022 uint32_t seqlo; /* Max sequence number sent */
1023 uint32_t seqhi; /* Max the other end ACKd + win */
1024 uint32_t seqdiff; /* Sequence number modulator */
1025 uint16_t max_win; /* largest window (pre scaling) */
1026 uint16_t mss; /* Maximum segment size option */
1027 uint8_t state; /* active state level */
1028 uint8_t wscale; /* window scaling factor */
1029 uint8_t dummy[6];
1030 };
1031 _Static_assert(sizeof(struct pf_state_peer_export) == 32, "size incorrect");
1032
1033 struct pf_state_export {
1034 uint64_t version;
1035 #define PF_STATE_VERSION 20230404
1036 uint64_t id;
1037 char ifname[IFNAMSIZ];
1038 char orig_ifname[IFNAMSIZ];
1039 struct pf_state_key_export key[2];
1040 struct pf_state_peer_export src;
1041 struct pf_state_peer_export dst;
1042 struct pf_addr rt_addr;
1043 uint32_t rule;
1044 uint32_t anchor;
1045 uint32_t nat_rule;
1046 uint32_t creation;
1047 uint32_t expire;
1048 uint32_t spare0;
1049 uint64_t packets[2];
1050 uint64_t bytes[2];
1051 uint32_t creatorid;
1052 uint32_t spare1;
1053 sa_family_t af;
1054 uint8_t proto;
1055 uint8_t direction;
1056 uint8_t log;
1057 uint8_t state_flags_compat;
1058 uint8_t timeout;
1059 uint8_t sync_flags;
1060 uint8_t updates;
1061 uint16_t state_flags;
1062 uint16_t qid;
1063 uint16_t pqid;
1064 uint16_t dnpipe;
1065 uint16_t dnrpipe;
1066 int32_t rtableid;
1067 uint8_t min_ttl;
1068 uint8_t set_tos;
1069 uint16_t max_mss;
1070 uint8_t set_prio[2];
1071 uint8_t rt;
1072 char rt_ifname[IFNAMSIZ];
1073
1074 uint8_t spare[72];
1075 };
1076 _Static_assert(sizeof(struct pf_state_export) == 384, "size incorrect");
1077
1078 #ifdef _KERNEL
1079 struct pf_kstate {
1080 /*
1081 * Area shared with pf_state_cmp
1082 */
1083 u_int64_t id;
1084 u_int32_t creatorid;
1085 u_int8_t direction;
1086 u_int8_t pad[3];
1087 /*
1088 * end of the area
1089 */
1090
1091 u_int16_t state_flags;
1092 u_int8_t timeout;
1093 u_int8_t sync_state; /* PFSYNC_S_x */
1094 u_int8_t sync_updates;
1095 u_int refs;
1096 struct mtx *lock;
1097 TAILQ_ENTRY(pf_kstate) sync_list;
1098 TAILQ_ENTRY(pf_kstate) key_list[2];
1099 LIST_ENTRY(pf_kstate) entry;
1100 struct pf_state_peer src;
1101 struct pf_state_peer dst;
1102 struct pf_krule_slist match_rules;
1103 struct pf_krule *rule;
1104 struct pf_krule *anchor;
1105 struct pf_krule *nat_rule;
1106 struct pf_state_key *key[2]; /* addresses stack and wire */
1107 struct pf_udp_mapping *udp_mapping;
1108 struct pfi_kkif *kif;
1109 struct pfi_kkif *orig_kif; /* The real kif, even if we're a floating state (i.e. if == V_pfi_all). */
1110 struct pf_ksrc_node *sns[PF_SN_MAX];/* source nodes */
1111 u_int64_t packets[2];
1112 u_int64_t bytes[2];
1113 u_int64_t creation;
1114 u_int64_t expire;
1115 u_int32_t pfsync_time;
1116 struct pf_rule_actions act;
1117 u_int16_t tag;
1118 u_int16_t if_index_in;
1119 u_int16_t if_index_out;
1120 };
1121
1122 /*
1123 * 6 cache lines per struct, 10 structs per page.
1124 * Try to not grow the struct beyond that.
1125 */
1126 _Static_assert(sizeof(struct pf_kstate) <= 384, "pf_kstate size crosses 384 bytes");
1127
1128 enum pf_test_status {
1129 PF_TEST_FAIL = -1,
1130 PF_TEST_OK,
1131 PF_TEST_QUICK
1132 };
1133
1134 struct pf_test_ctx {
1135 enum pf_test_status test_status;
1136 struct pf_pdesc *pd;
1137 struct pf_rule_actions act;
1138 uint8_t icmpcode;
1139 uint8_t icmptype;
1140 int icmp_dir;
1141 int state_icmp;
1142 int tag;
1143 int rewrite;
1144 u_short reason;
1145 struct pf_src_node *sns[PF_SN_MAX];
1146 struct pf_krule_slist rules;
1147 struct pf_krule *nr;
1148 struct pf_krule *tr;
1149 struct pf_krule **rm;
1150 struct pf_krule *a;
1151 struct pf_krule **am;
1152 struct pf_kruleset **rsm;
1153 struct pf_kruleset *arsm;
1154 struct pf_kruleset *aruleset;
1155 struct pf_state_key *sk;
1156 struct pf_state_key *nk;
1157 struct tcphdr *th;
1158 struct pf_udp_mapping *udp_mapping;
1159 struct pf_kpool *nat_pool;
1160 uint16_t virtual_type;
1161 uint16_t virtual_id;
1162 int depth;
1163 };
1164
1165 #define PF_ANCHOR_STACK_MAX 32
1166 #endif
1167
1168 /*
1169 * Unified state structures for pulling states out of the kernel
1170 * used by pfsync(4) and the pf(4) ioctl.
1171 */
1172 struct pfsync_state_scrub {
1173 u_int16_t pfss_flags;
1174 u_int8_t pfss_ttl; /* stashed TTL */
1175 #define PFSYNC_SCRUB_FLAG_VALID 0x01
1176 u_int8_t scrub_flag;
1177 u_int32_t pfss_ts_mod; /* timestamp modulation */
1178 } __packed;
1179
1180 struct pfsync_state_peer {
1181 struct pfsync_state_scrub scrub; /* state is scrubbed */
1182 u_int32_t seqlo; /* Max sequence number sent */
1183 u_int32_t seqhi; /* Max the other end ACKd + win */
1184 u_int32_t seqdiff; /* Sequence number modulator */
1185 u_int16_t max_win; /* largest window (pre scaling) */
1186 u_int16_t mss; /* Maximum segment size option */
1187 u_int8_t state; /* active state level */
1188 u_int8_t wscale; /* window scaling factor */
1189 u_int8_t pad[6];
1190 } __packed;
1191
1192 struct pfsync_state_key {
1193 struct pf_addr addr[2];
1194 u_int16_t port[2];
1195 };
1196
1197 struct pfsync_state_1301 {
1198 u_int64_t id;
1199 char ifname[IFNAMSIZ];
1200 struct pfsync_state_key key[2];
1201 struct pfsync_state_peer src;
1202 struct pfsync_state_peer dst;
1203 struct pf_addr rt_addr;
1204 u_int32_t rule;
1205 u_int32_t anchor;
1206 u_int32_t nat_rule;
1207 u_int32_t creation;
1208 u_int32_t expire;
1209 u_int32_t packets[2][2];
1210 u_int32_t bytes[2][2];
1211 u_int32_t creatorid;
1212 sa_family_t af;
1213 u_int8_t proto;
1214 u_int8_t direction;
1215 u_int8_t __spare[2];
1216 u_int8_t log;
1217 u_int8_t state_flags;
1218 u_int8_t timeout;
1219 u_int8_t sync_flags;
1220 u_int8_t updates;
1221 } __packed;
1222
1223 struct pfsync_state_1400 {
1224 /* The beginning of the struct is compatible with previous versions */
1225 u_int64_t id;
1226 char ifname[IFNAMSIZ];
1227 struct pfsync_state_key key[2];
1228 struct pfsync_state_peer src;
1229 struct pfsync_state_peer dst;
1230 struct pf_addr rt_addr;
1231 u_int32_t rule;
1232 u_int32_t anchor;
1233 u_int32_t nat_rule;
1234 u_int32_t creation;
1235 u_int32_t expire;
1236 u_int32_t packets[2][2];
1237 u_int32_t bytes[2][2];
1238 u_int32_t creatorid;
1239 sa_family_t af;
1240 u_int8_t proto;
1241 u_int8_t direction;
1242 u_int16_t state_flags;
1243 u_int8_t log;
1244 u_int8_t __spare;
1245 u_int8_t timeout;
1246 u_int8_t sync_flags;
1247 u_int8_t updates;
1248 /* The rest is not */
1249 u_int16_t qid;
1250 u_int16_t pqid;
1251 u_int16_t dnpipe;
1252 u_int16_t dnrpipe;
1253 int32_t rtableid;
1254 u_int8_t min_ttl;
1255 u_int8_t set_tos;
1256 u_int16_t max_mss;
1257 u_int8_t set_prio[2];
1258 u_int8_t rt;
1259 char rt_ifname[IFNAMSIZ];
1260
1261 } __packed;
1262
1263 union pfsync_state_union {
1264 struct pfsync_state_1301 pfs_1301;
1265 struct pfsync_state_1400 pfs_1400;
1266 } __packed;
1267
1268 #ifdef _KERNEL
1269 /* pfsync */
1270 typedef int pfsync_state_import_t(union pfsync_state_union *, int, int);
1271 typedef void pfsync_insert_state_t(struct pf_kstate *);
1272 typedef void pfsync_update_state_t(struct pf_kstate *);
1273 typedef void pfsync_delete_state_t(struct pf_kstate *);
1274 typedef void pfsync_clear_states_t(u_int32_t, const char *);
1275 typedef int pfsync_defer_t(struct pf_kstate *, struct mbuf *);
1276 typedef void pfsync_detach_ifnet_t(struct ifnet *);
1277 typedef void pflow_export_state_t(const struct pf_kstate *);
1278 typedef bool pf_addr_filter_func_t(const sa_family_t, const struct pf_addr *);
1279
1280 VNET_DECLARE(pfsync_state_import_t *, pfsync_state_import_ptr);
1281 #define V_pfsync_state_import_ptr VNET(pfsync_state_import_ptr)
1282 VNET_DECLARE(pfsync_insert_state_t *, pfsync_insert_state_ptr);
1283 #define V_pfsync_insert_state_ptr VNET(pfsync_insert_state_ptr)
1284 VNET_DECLARE(pfsync_update_state_t *, pfsync_update_state_ptr);
1285 #define V_pfsync_update_state_ptr VNET(pfsync_update_state_ptr)
1286 VNET_DECLARE(pfsync_delete_state_t *, pfsync_delete_state_ptr);
1287 #define V_pfsync_delete_state_ptr VNET(pfsync_delete_state_ptr)
1288 VNET_DECLARE(pfsync_clear_states_t *, pfsync_clear_states_ptr);
1289 #define V_pfsync_clear_states_ptr VNET(pfsync_clear_states_ptr)
1290 VNET_DECLARE(pfsync_defer_t *, pfsync_defer_ptr);
1291 #define V_pfsync_defer_ptr VNET(pfsync_defer_ptr)
1292 VNET_DECLARE(pflow_export_state_t *, pflow_export_state_ptr);
1293 #define V_pflow_export_state_ptr VNET(pflow_export_state_ptr)
1294 extern pfsync_detach_ifnet_t *pfsync_detach_ifnet_ptr;
1295
1296 void pfsync_state_export(union pfsync_state_union *,
1297 struct pf_kstate *, int);
1298 void pf_state_export(struct pf_state_export *,
1299 struct pf_kstate *);
1300
1301 /* pflog */
1302 struct pf_kruleset;
1303 struct pf_pdesc;
1304 typedef int pflog_packet_t(uint8_t, u_int8_t,
1305 struct pf_krule *, struct pf_krule *, struct pf_kruleset *,
1306 struct pf_pdesc *, int, struct pf_krule *);
1307 extern pflog_packet_t *pflog_packet_ptr;
1308
1309 #endif /* _KERNEL */
1310
1311 #define PFSYNC_FLAG_SRCNODE 0x04
1312 #define PFSYNC_FLAG_NATSRCNODE 0x08
1313
1314 /* for copies to/from network byte order */
1315 /* ioctl interface also uses network byte order */
1316 #define pf_state_peer_hton(s,d) do { \
1317 (d)->seqlo = htonl((s)->seqlo); \
1318 (d)->seqhi = htonl((s)->seqhi); \
1319 (d)->seqdiff = htonl((s)->seqdiff); \
1320 (d)->max_win = htons((s)->max_win); \
1321 (d)->mss = htons((s)->mss); \
1322 (d)->state = (s)->state; \
1323 (d)->wscale = (s)->wscale; \
1324 if ((s)->scrub) { \
1325 (d)->scrub.pfss_flags = \
1326 htons((s)->scrub->pfss_flags & PFSS_TIMESTAMP); \
1327 (d)->scrub.pfss_ttl = (s)->scrub->pfss_ttl; \
1328 (d)->scrub.pfss_ts_mod = htonl((s)->scrub->pfss_ts_mod);\
1329 (d)->scrub.scrub_flag = PFSYNC_SCRUB_FLAG_VALID; \
1330 } \
1331 } while (0)
1332
1333 #define pf_state_peer_ntoh(s,d) do { \
1334 (d)->seqlo = ntohl((s)->seqlo); \
1335 (d)->seqhi = ntohl((s)->seqhi); \
1336 (d)->seqdiff = ntohl((s)->seqdiff); \
1337 (d)->max_win = ntohs((s)->max_win); \
1338 (d)->mss = ntohs((s)->mss); \
1339 (d)->state = (s)->state; \
1340 (d)->wscale = (s)->wscale; \
1341 if ((s)->scrub.scrub_flag == PFSYNC_SCRUB_FLAG_VALID && \
1342 (d)->scrub != NULL) { \
1343 (d)->scrub->pfss_flags = \
1344 ntohs((s)->scrub.pfss_flags) & PFSS_TIMESTAMP; \
1345 (d)->scrub->pfss_ttl = (s)->scrub.pfss_ttl; \
1346 (d)->scrub->pfss_ts_mod = ntohl((s)->scrub.pfss_ts_mod);\
1347 } \
1348 } while (0)
1349
1350 #define pf_state_counter_hton(s,d) do { \
1351 d[0] = htonl((s>>32)&0xffffffff); \
1352 d[1] = htonl(s&0xffffffff); \
1353 } while (0)
1354
1355 #define pf_state_counter_from_pfsync(s) \
1356 (((u_int64_t)(s[0])<<32) | (u_int64_t)(s[1]))
1357
1358 #define pf_state_counter_ntoh(s,d) do { \
1359 d = ntohl(s[0]); \
1360 d = d<<32; \
1361 d += ntohl(s[1]); \
1362 } while (0)
1363
1364 TAILQ_HEAD(pf_krulequeue, pf_krule);
1365
1366 struct pf_kanchor;
1367
1368 struct pf_kruleset {
1369 struct {
1370 struct pf_krulequeue queues[2];
1371 struct {
1372 struct pf_krulequeue *ptr;
1373 struct pf_krule **ptr_array;
1374 u_int32_t rcount;
1375 u_int32_t ticket;
1376 int open;
1377 struct pf_krule_global *tree;
1378 } active, inactive;
1379 } rules[PF_RULESET_MAX];
1380 struct pf_kanchor *anchor;
1381 u_int32_t tticket;
1382 int tables;
1383 int topen;
1384 };
1385
1386 RB_HEAD(pf_kanchor_global, pf_kanchor);
1387 RB_HEAD(pf_kanchor_node, pf_kanchor);
1388 struct pf_kanchor {
1389 RB_ENTRY(pf_kanchor) entry_global;
1390 RB_ENTRY(pf_kanchor) entry_node;
1391 struct pf_kanchor *parent;
1392 struct pf_kanchor_node children;
1393 char name[PF_ANCHOR_NAME_SIZE];
1394 char path[MAXPATHLEN];
1395 struct pf_kruleset ruleset;
1396 int refcnt; /* anchor rules */
1397 };
1398 RB_PROTOTYPE(pf_kanchor_global, pf_kanchor, entry_global, pf_anchor_compare);
1399 RB_PROTOTYPE(pf_kanchor_node, pf_kanchor, entry_node, pf_kanchor_compare);
1400
1401 #define PF_RESERVED_ANCHOR "_pf"
1402
1403 #define PFR_TFLAG_PERSIST 0x00000001
1404 #define PFR_TFLAG_CONST 0x00000002
1405 #define PFR_TFLAG_ACTIVE 0x00000004
1406 #define PFR_TFLAG_INACTIVE 0x00000008
1407 #define PFR_TFLAG_REFERENCED 0x00000010
1408 #define PFR_TFLAG_REFDANCHOR 0x00000020
1409 #define PFR_TFLAG_COUNTERS 0x00000040
1410 /* Adjust masks below when adding flags. */
1411 #define PFR_TFLAG_USRMASK (PFR_TFLAG_PERSIST | \
1412 PFR_TFLAG_CONST | \
1413 PFR_TFLAG_COUNTERS)
1414 #define PFR_TFLAG_SETMASK (PFR_TFLAG_ACTIVE | \
1415 PFR_TFLAG_INACTIVE | \
1416 PFR_TFLAG_REFERENCED | \
1417 PFR_TFLAG_REFDANCHOR)
1418 #define PFR_TFLAG_ALLMASK (PFR_TFLAG_PERSIST | \
1419 PFR_TFLAG_CONST | \
1420 PFR_TFLAG_ACTIVE | \
1421 PFR_TFLAG_INACTIVE | \
1422 PFR_TFLAG_REFERENCED | \
1423 PFR_TFLAG_REFDANCHOR | \
1424 PFR_TFLAG_COUNTERS)
1425
1426 struct pf_keth_anchor_stackframe;
1427
1428 struct pfr_table {
1429 char pfrt_anchor[MAXPATHLEN];
1430 char pfrt_name[PF_TABLE_NAME_SIZE];
1431 u_int32_t pfrt_flags;
1432 u_int8_t pfrt_fback;
1433 };
1434
1435 enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED,
1436 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE,
1437 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_NOCOUNT, PFR_FB_MAX };
1438
1439 struct pfr_addr {
1440 union {
1441 struct in_addr _pfra_ip4addr;
1442 struct in6_addr _pfra_ip6addr;
1443 } pfra_u;
1444 u_int8_t pfra_af;
1445 u_int8_t pfra_net;
1446 u_int8_t pfra_not;
1447 u_int8_t pfra_fback;
1448 };
1449 #define pfra_ip4addr pfra_u._pfra_ip4addr
1450 #define pfra_ip6addr pfra_u._pfra_ip6addr
1451
1452 enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX };
1453 enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX };
1454 enum { PFR_TYPE_PACKETS, PFR_TYPE_BYTES, PFR_TYPE_MAX };
1455 #define PFR_NUM_COUNTERS (PFR_DIR_MAX * PFR_OP_ADDR_MAX * PFR_TYPE_MAX)
1456 #define PFR_OP_XPASS PFR_OP_ADDR_MAX
1457
1458 struct pfr_astats {
1459 struct pfr_addr pfras_a;
1460 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
1461 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
1462 time_t pfras_tzero;
1463 };
1464
1465 enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX };
1466
1467 struct pfr_tstats {
1468 struct pfr_table pfrts_t;
1469 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
1470 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
1471 u_int64_t pfrts_match;
1472 u_int64_t pfrts_nomatch;
1473 time_t pfrts_tzero;
1474 int pfrts_cnt;
1475 int pfrts_refcnt[PFR_REFCNT_MAX];
1476 };
1477
1478 #ifdef _KERNEL
1479
1480 struct pfr_kstate_counter {
1481 counter_u64_t pkc_pcpu;
1482 u_int64_t pkc_zero;
1483 };
1484
1485 static inline int
pfr_kstate_counter_init(struct pfr_kstate_counter * pfrc,int flags)1486 pfr_kstate_counter_init(struct pfr_kstate_counter *pfrc, int flags)
1487 {
1488
1489 pfrc->pkc_zero = 0;
1490 pfrc->pkc_pcpu = counter_u64_alloc(flags);
1491 if (pfrc->pkc_pcpu == NULL)
1492 return (ENOMEM);
1493 return (0);
1494 }
1495
1496 static inline void
pfr_kstate_counter_deinit(struct pfr_kstate_counter * pfrc)1497 pfr_kstate_counter_deinit(struct pfr_kstate_counter *pfrc)
1498 {
1499
1500 counter_u64_free(pfrc->pkc_pcpu);
1501 }
1502
1503 static inline u_int64_t
pfr_kstate_counter_fetch(struct pfr_kstate_counter * pfrc)1504 pfr_kstate_counter_fetch(struct pfr_kstate_counter *pfrc)
1505 {
1506 u_int64_t c;
1507
1508 c = counter_u64_fetch(pfrc->pkc_pcpu);
1509 c -= pfrc->pkc_zero;
1510 return (c);
1511 }
1512
1513 static inline void
pfr_kstate_counter_zero(struct pfr_kstate_counter * pfrc)1514 pfr_kstate_counter_zero(struct pfr_kstate_counter *pfrc)
1515 {
1516 u_int64_t c;
1517
1518 c = counter_u64_fetch(pfrc->pkc_pcpu);
1519 pfrc->pkc_zero = c;
1520 }
1521
1522 static inline void
pfr_kstate_counter_add(struct pfr_kstate_counter * pfrc,int64_t n)1523 pfr_kstate_counter_add(struct pfr_kstate_counter *pfrc, int64_t n)
1524 {
1525
1526 counter_u64_add(pfrc->pkc_pcpu, n);
1527 }
1528
1529 struct pfr_ktstats {
1530 struct pfr_table pfrts_t;
1531 struct pfr_kstate_counter pfrkts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
1532 struct pfr_kstate_counter pfrkts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
1533 struct pfr_kstate_counter pfrkts_match;
1534 struct pfr_kstate_counter pfrkts_nomatch;
1535 time_t pfrkts_tzero;
1536 int pfrkts_cnt;
1537 int pfrkts_refcnt[PFR_REFCNT_MAX];
1538 };
1539
1540 #endif /* _KERNEL */
1541
1542 #define pfrts_name pfrts_t.pfrt_name
1543 #define pfrts_flags pfrts_t.pfrt_flags
1544
1545 #ifndef _SOCKADDR_UNION_DEFINED
1546 #define _SOCKADDR_UNION_DEFINED
1547 union sockaddr_union {
1548 struct sockaddr sa;
1549 struct sockaddr_in sin;
1550 struct sockaddr_in6 sin6;
1551 };
1552 #endif /* _SOCKADDR_UNION_DEFINED */
1553
1554 struct pfr_kcounters {
1555 counter_u64_t pfrkc_counters;
1556 time_t pfrkc_tzero;
1557 };
1558 #define pfr_kentry_counter(kc, dir, op, t) \
1559 ((kc)->pfrkc_counters + \
1560 (dir) * PFR_OP_ADDR_MAX * PFR_TYPE_MAX + (op) * PFR_TYPE_MAX + (t))
1561
1562 #ifdef _KERNEL
1563 SLIST_HEAD(pfr_kentryworkq, pfr_kentry);
1564 struct pfr_kentry {
1565 struct radix_node pfrke_node[2];
1566 union sockaddr_union pfrke_sa;
1567 SLIST_ENTRY(pfr_kentry) pfrke_workq;
1568 struct pfr_kcounters pfrke_counters;
1569 u_int8_t pfrke_af;
1570 u_int8_t pfrke_net;
1571 u_int8_t pfrke_not;
1572 u_int8_t pfrke_mark;
1573 };
1574
1575 SLIST_HEAD(pfr_ktableworkq, pfr_ktable);
1576 RB_HEAD(pfr_ktablehead, pfr_ktable);
1577 struct pfr_ktable {
1578 struct pfr_ktstats pfrkt_kts;
1579 RB_ENTRY(pfr_ktable) pfrkt_tree;
1580 SLIST_ENTRY(pfr_ktable) pfrkt_workq;
1581 struct radix_node_head *pfrkt_ip4;
1582 struct radix_node_head *pfrkt_ip6;
1583 struct pfr_ktable *pfrkt_shadow;
1584 struct pfr_ktable *pfrkt_root;
1585 struct pf_kruleset *pfrkt_rs;
1586 long pfrkt_larg;
1587 int pfrkt_nflags;
1588 };
1589 #define pfrkt_t pfrkt_kts.pfrts_t
1590 #define pfrkt_name pfrkt_t.pfrt_name
1591 #define pfrkt_anchor pfrkt_t.pfrt_anchor
1592 #define pfrkt_ruleset pfrkt_t.pfrt_ruleset
1593 #define pfrkt_flags pfrkt_t.pfrt_flags
1594 #define pfrkt_cnt pfrkt_kts.pfrkts_cnt
1595 #define pfrkt_refcnt pfrkt_kts.pfrkts_refcnt
1596 #define pfrkt_packets pfrkt_kts.pfrkts_packets
1597 #define pfrkt_bytes pfrkt_kts.pfrkts_bytes
1598 #define pfrkt_match pfrkt_kts.pfrkts_match
1599 #define pfrkt_nomatch pfrkt_kts.pfrkts_nomatch
1600 #define pfrkt_tzero pfrkt_kts.pfrkts_tzero
1601 #endif
1602
1603 #ifdef _KERNEL
1604 struct pfi_kkif {
1605 char pfik_name[IFNAMSIZ];
1606 union {
1607 RB_ENTRY(pfi_kkif) _pfik_tree;
1608 LIST_ENTRY(pfi_kkif) _pfik_list;
1609 } _pfik_glue;
1610 #define pfik_tree _pfik_glue._pfik_tree
1611 #define pfik_list _pfik_glue._pfik_list
1612 struct pf_counter_u64 pfik_packets[2][2][2];
1613 struct pf_counter_u64 pfik_bytes[2][2][2];
1614 time_t pfik_tzero;
1615 u_int pfik_flags;
1616 struct ifnet *pfik_ifp;
1617 struct ifg_group *pfik_group;
1618 u_int pfik_rulerefs;
1619 TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs;
1620 #ifdef PF_WANT_32_TO_64_COUNTER
1621 LIST_ENTRY(pfi_kkif) pfik_allkiflist;
1622 #endif
1623 };
1624 #endif
1625
1626 #define PFI_IFLAG_REFS 0x0001 /* has state references */
1627 #define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */
1628 #define PFI_IFLAG_ANY 0x0200 /* match any non-loopback interface */
1629
1630 #ifdef _KERNEL
1631 struct pf_sctp_multihome_job;
1632 TAILQ_HEAD(pf_sctp_multihome_jobs, pf_sctp_multihome_job);
1633
1634 struct pf_pdesc {
1635 struct {
1636 int done;
1637 uid_t uid;
1638 gid_t gid;
1639 } lookup;
1640 u_int64_t tot_len; /* Make Mickey money */
1641 union pf_headers {
1642 struct tcphdr tcp;
1643 struct udphdr udp;
1644 struct sctphdr sctp;
1645 struct icmp icmp;
1646 #ifdef INET6
1647 struct icmp6_hdr icmp6;
1648 #endif /* INET6 */
1649 char any[0];
1650 } hdr;
1651
1652 struct pf_addr nsaddr; /* src address after NAT */
1653 struct pf_addr ndaddr; /* dst address after NAT */
1654
1655 struct pfi_kkif *kif; /* incomming interface */
1656 struct mbuf *m;
1657
1658 struct pf_addr *src; /* src address */
1659 struct pf_addr *dst; /* dst address */
1660 struct pf_addr osrc;
1661 struct pf_addr odst;
1662 u_int16_t *pcksum; /* proto cksum */
1663 u_int16_t *sport;
1664 u_int16_t *dport;
1665 u_int16_t osport;
1666 u_int16_t odport;
1667 u_int16_t nsport; /* src port after NAT */
1668 u_int16_t ndport; /* dst port after NAT */
1669 struct pf_mtag *pf_mtag;
1670 struct pf_rule_actions act;
1671
1672 u_int32_t off; /* protocol header offset */
1673 bool df; /* IPv4 Don't fragment flag. */
1674 u_int32_t hdrlen; /* protocol header length */
1675 u_int32_t p_len; /* total length of protocol payload */
1676 u_int32_t extoff; /* extentsion header offset */
1677 u_int32_t fragoff; /* fragment header offset */
1678 u_int32_t jumbolen; /* length from v6 jumbo header */
1679 u_int32_t badopts; /* v4 options or v6 routing headers */
1680
1681 u_int16_t *ip_sum;
1682 u_int16_t flags; /* Let SCRUB trigger behavior in
1683 * state code. Easier than tags */
1684 #define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */
1685 u_int16_t virtual_proto;
1686 #define PF_VPROTO_FRAGMENT 256
1687 sa_family_t af;
1688 sa_family_t naf;
1689 u_int8_t proto;
1690 u_int8_t tos;
1691 u_int8_t ttl;
1692 u_int8_t dir; /* direction */
1693 u_int8_t sidx; /* key index for source */
1694 u_int8_t didx; /* key index for destination */
1695 #define PFDESC_SCTP_INIT 0x0001
1696 #define PFDESC_SCTP_INIT_ACK 0x0002
1697 #define PFDESC_SCTP_COOKIE 0x0004
1698 #define PFDESC_SCTP_COOKIE_ACK 0x0008
1699 #define PFDESC_SCTP_ABORT 0x0010
1700 #define PFDESC_SCTP_SHUTDOWN 0x0020
1701 #define PFDESC_SCTP_SHUTDOWN_COMPLETE 0x0040
1702 #define PFDESC_SCTP_DATA 0x0080
1703 #define PFDESC_SCTP_ASCONF 0x0100
1704 #define PFDESC_SCTP_HEARTBEAT 0x0200
1705 #define PFDESC_SCTP_HEARTBEAT_ACK 0x0400
1706 #define PFDESC_SCTP_OTHER 0x0800
1707 #define PFDESC_SCTP_ADD_IP 0x1000
1708 u_int16_t sctp_flags;
1709 u_int32_t sctp_initiate_tag;
1710 u_int16_t sctp_dummy_sum;
1711 struct pf_krule *related_rule;
1712
1713 struct pf_sctp_multihome_jobs sctp_multihome_jobs;
1714 };
1715
1716 struct pf_sctp_multihome_job {
1717 TAILQ_ENTRY(pf_sctp_multihome_job) next;
1718 struct pf_pdesc pd;
1719 struct pf_addr src;
1720 struct pf_addr dst;
1721 int op;
1722 };
1723
1724 #endif
1725
1726 /* flags for RDR options */
1727 #define PF_DPORT_RANGE 0x01 /* Dest port uses range */
1728 #define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */
1729
1730 /* UDP state enumeration */
1731 #define PFUDPS_NO_TRAFFIC 0
1732 #define PFUDPS_SINGLE 1
1733 #define PFUDPS_MULTIPLE 2
1734
1735 #define PFUDPS_NSTATES 3 /* number of state levels */
1736
1737 #define PFUDPS_NAMES { \
1738 "NO_TRAFFIC", \
1739 "SINGLE", \
1740 "MULTIPLE", \
1741 NULL \
1742 }
1743
1744 /* Other protocol state enumeration */
1745 #define PFOTHERS_NO_TRAFFIC 0
1746 #define PFOTHERS_SINGLE 1
1747 #define PFOTHERS_MULTIPLE 2
1748
1749 #define PFOTHERS_NSTATES 3 /* number of state levels */
1750
1751 #define PFOTHERS_NAMES { \
1752 "NO_TRAFFIC", \
1753 "SINGLE", \
1754 "MULTIPLE", \
1755 NULL \
1756 }
1757
1758 #define ACTION_SET(a, x) \
1759 do { \
1760 if ((a) != NULL) \
1761 *(a) = (x); \
1762 } while (0)
1763
1764 #define REASON_SET(a, x) \
1765 do { \
1766 SDT_PROBE2(pf, , test, reason_set, x, __LINE__); \
1767 if ((a) != NULL) \
1768 *(a) = (x); \
1769 if (x < PFRES_MAX) \
1770 counter_u64_add(V_pf_status.counters[x], 1); \
1771 } while (0)
1772
1773 enum pf_syncookies_mode {
1774 PF_SYNCOOKIES_NEVER = 0,
1775 PF_SYNCOOKIES_ALWAYS = 1,
1776 PF_SYNCOOKIES_ADAPTIVE = 2,
1777 PF_SYNCOOKIES_MODE_MAX = PF_SYNCOOKIES_ADAPTIVE
1778 };
1779
1780 #define PF_SYNCOOKIES_HIWATPCT 25
1781 #define PF_SYNCOOKIES_LOWATPCT (PF_SYNCOOKIES_HIWATPCT / 2)
1782
1783 #ifdef _KERNEL
1784 struct pf_kstatus {
1785 counter_u64_t counters[PFRES_MAX]; /* reason for passing/dropping */
1786 counter_u64_t lcounters[KLCNT_MAX]; /* limit counters */
1787 struct pf_counter_u64 fcounters[FCNT_MAX]; /* state operation counters */
1788 counter_u64_t scounters[SCNT_MAX]; /* src_node operation counters */
1789 uint32_t states;
1790 uint32_t src_nodes;
1791 uint32_t running;
1792 uint32_t since;
1793 uint32_t debug;
1794 uint32_t hostid;
1795 char ifname[IFNAMSIZ];
1796 uint8_t pf_chksum[PF_MD5_DIGEST_LENGTH];
1797 bool keep_counters;
1798 enum pf_syncookies_mode syncookies_mode;
1799 bool syncookies_active;
1800 uint64_t syncookies_inflight[2];
1801 uint32_t states_halfopen;
1802 uint32_t reass;
1803 };
1804 #endif
1805
1806 struct pf_divert {
1807 union {
1808 struct in_addr ipv4;
1809 struct in6_addr ipv6;
1810 } addr;
1811 u_int16_t port;
1812 };
1813
1814 #define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */
1815 #define PFR_KENTRY_HIWAT 200000 /* Number of table entries */
1816
1817 struct pf_fragment_tag {
1818 uint16_t ft_hdrlen; /* header length of reassembled pkt */
1819 uint16_t ft_extoff; /* last extension header offset or 0 */
1820 uint16_t ft_maxlen; /* maximum fragment payload length */
1821 uint32_t ft_id; /* fragment id */
1822 };
1823
1824 /*
1825 * Limit the length of the fragment queue traversal. Remember
1826 * search entry points based on the fragment offset.
1827 */
1828 #define PF_FRAG_ENTRY_POINTS 16
1829
1830 /*
1831 * The number of entries in the fragment queue must be limited
1832 * to avoid DoS by linear searching. Instead of a global limit,
1833 * use a limit per entry point. For large packets these sum up.
1834 */
1835 #define PF_FRAG_ENTRY_LIMIT 64
1836
1837 /*
1838 * ioctl parameter structures
1839 */
1840
1841 struct pfioc_pooladdr {
1842 u_int32_t action;
1843 u_int32_t ticket;
1844 u_int32_t nr;
1845 u_int32_t r_num;
1846 u_int8_t r_action;
1847 u_int8_t r_last;
1848 u_int8_t af;
1849 char anchor[MAXPATHLEN];
1850 struct pf_pooladdr addr;
1851 };
1852
1853 struct pfioc_rule {
1854 u_int32_t action;
1855 u_int32_t ticket;
1856 u_int32_t pool_ticket;
1857 u_int32_t nr;
1858 char anchor[MAXPATHLEN];
1859 char anchor_call[MAXPATHLEN];
1860 struct pf_rule rule;
1861 };
1862
1863 struct pfioc_natlook {
1864 struct pf_addr saddr;
1865 struct pf_addr daddr;
1866 struct pf_addr rsaddr;
1867 struct pf_addr rdaddr;
1868 u_int16_t sport;
1869 u_int16_t dport;
1870 u_int16_t rsport;
1871 u_int16_t rdport;
1872 sa_family_t af;
1873 u_int8_t proto;
1874 u_int8_t direction;
1875 };
1876
1877 struct pfioc_state {
1878 struct pfsync_state_1301 state;
1879 };
1880
1881 struct pfioc_src_node_kill {
1882 sa_family_t psnk_af;
1883 struct pf_rule_addr psnk_src;
1884 struct pf_rule_addr psnk_dst;
1885 u_int psnk_killed;
1886 };
1887
1888 #ifdef _KERNEL
1889 struct pf_kstate_kill {
1890 struct pf_state_cmp psk_pfcmp;
1891 sa_family_t psk_af;
1892 int psk_proto;
1893 struct pf_rule_addr psk_src;
1894 struct pf_rule_addr psk_dst;
1895 struct pf_rule_addr psk_rt_addr;
1896 char psk_ifname[IFNAMSIZ];
1897 char psk_label[PF_RULE_LABEL_SIZE];
1898 u_int psk_killed;
1899 bool psk_kill_match;
1900 bool psk_nat;
1901 };
1902 #endif
1903
1904 struct pfioc_state_kill {
1905 struct pf_state_cmp psk_pfcmp;
1906 sa_family_t psk_af;
1907 int psk_proto;
1908 struct pf_rule_addr psk_src;
1909 struct pf_rule_addr psk_dst;
1910 char psk_ifname[IFNAMSIZ];
1911 char psk_label[PF_RULE_LABEL_SIZE];
1912 u_int psk_killed;
1913 };
1914
1915 struct pfioc_states {
1916 int ps_len;
1917 union {
1918 void *ps_buf;
1919 struct pfsync_state_1301 *ps_states;
1920 };
1921 };
1922
1923 struct pfioc_states_v2 {
1924 int ps_len;
1925 uint64_t ps_req_version;
1926 union {
1927 void *ps_buf;
1928 struct pf_state_export *ps_states;
1929 };
1930 };
1931
1932 struct pfioc_src_nodes {
1933 int psn_len;
1934 union {
1935 void *psn_buf;
1936 struct pf_src_node *psn_src_nodes;
1937 };
1938 };
1939
1940 struct pfioc_if {
1941 char ifname[IFNAMSIZ];
1942 };
1943
1944 struct pfioc_tm {
1945 int timeout;
1946 int seconds;
1947 };
1948
1949 struct pfioc_limit {
1950 int index;
1951 unsigned limit;
1952 };
1953
1954 struct pfioc_altq_v0 {
1955 u_int32_t action;
1956 u_int32_t ticket;
1957 u_int32_t nr;
1958 struct pf_altq_v0 altq;
1959 };
1960
1961 struct pfioc_altq_v1 {
1962 u_int32_t action;
1963 u_int32_t ticket;
1964 u_int32_t nr;
1965 /*
1966 * Placed here so code that only uses the above parameters can be
1967 * written entirely in terms of the v0 or v1 type.
1968 */
1969 u_int32_t version;
1970 struct pf_altq_v1 altq;
1971 };
1972
1973 /*
1974 * Latest version of struct pfioc_altq_vX. This must move in lock-step with
1975 * the latest version of struct pf_altq_vX as it has that struct as a
1976 * member.
1977 */
1978 #define PFIOC_ALTQ_VERSION PF_ALTQ_VERSION
1979
1980 struct pfioc_qstats_v0 {
1981 u_int32_t ticket;
1982 u_int32_t nr;
1983 void *buf;
1984 int nbytes;
1985 u_int8_t scheduler;
1986 };
1987
1988 struct pfioc_qstats_v1 {
1989 u_int32_t ticket;
1990 u_int32_t nr;
1991 void *buf;
1992 int nbytes;
1993 u_int8_t scheduler;
1994 /*
1995 * Placed here so code that only uses the above parameters can be
1996 * written entirely in terms of the v0 or v1 type.
1997 */
1998 u_int32_t version; /* Requested version of stats struct */
1999 };
2000
2001 /* Latest version of struct pfioc_qstats_vX */
2002 #define PFIOC_QSTATS_VERSION 1
2003
2004 struct pfioc_ruleset {
2005 u_int32_t nr;
2006 char path[MAXPATHLEN];
2007 char name[PF_ANCHOR_NAME_SIZE];
2008 };
2009
2010 #define PF_RULESET_ALTQ (PF_RULESET_MAX)
2011 #define PF_RULESET_TABLE (PF_RULESET_MAX+1)
2012 #define PF_RULESET_ETH (PF_RULESET_MAX+2)
2013 struct pfioc_trans {
2014 int size; /* number of elements */
2015 int esize; /* size of each element in bytes */
2016 struct pfioc_trans_e {
2017 int rs_num;
2018 char anchor[MAXPATHLEN];
2019 u_int32_t ticket;
2020 } *array;
2021 };
2022
2023 #define PFR_FLAG_ATOMIC 0x00000001 /* unused */
2024 #define PFR_FLAG_DUMMY 0x00000002
2025 #define PFR_FLAG_FEEDBACK 0x00000004
2026 #define PFR_FLAG_CLSTATS 0x00000008
2027 #define PFR_FLAG_ADDRSTOO 0x00000010
2028 #define PFR_FLAG_REPLACE 0x00000020
2029 #define PFR_FLAG_ALLRSETS 0x00000040
2030 #define PFR_FLAG_ALLMASK 0x0000007F
2031 #ifdef _KERNEL
2032 #define PFR_FLAG_USERIOCTL 0x10000000
2033 #endif
2034
2035 struct pfioc_table {
2036 struct pfr_table pfrio_table;
2037 void *pfrio_buffer;
2038 int pfrio_esize;
2039 int pfrio_size;
2040 int pfrio_size2;
2041 int pfrio_nadd;
2042 int pfrio_ndel;
2043 int pfrio_nchange;
2044 int pfrio_flags;
2045 u_int32_t pfrio_ticket;
2046 };
2047 #define pfrio_exists pfrio_nadd
2048 #define pfrio_nzero pfrio_nadd
2049 #define pfrio_nmatch pfrio_nadd
2050 #define pfrio_naddr pfrio_size2
2051 #define pfrio_setflag pfrio_size2
2052 #define pfrio_clrflag pfrio_nadd
2053
2054 struct pfioc_iface {
2055 char pfiio_name[IFNAMSIZ];
2056 void *pfiio_buffer;
2057 int pfiio_esize;
2058 int pfiio_size;
2059 int pfiio_nzero;
2060 int pfiio_flags;
2061 };
2062
2063 /*
2064 * ioctl operations
2065 */
2066
2067 #define DIOCSTART _IO ('D', 1)
2068 #define DIOCSTOP _IO ('D', 2)
2069 #define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule)
2070 #define DIOCADDRULENV _IOWR('D', 4, struct pfioc_nv)
2071 #define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule)
2072 #define DIOCGETRULENV _IOWR('D', 7, struct pfioc_nv)
2073 #define DIOCCLRSTATESNV _IOWR('D', 18, struct pfioc_nv)
2074 #define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state)
2075 #define DIOCGETSTATENV _IOWR('D', 19, struct pfioc_nv)
2076 #define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if)
2077 #define DIOCGETSTATUSNV _IOWR('D', 21, struct pfioc_nv)
2078 #define DIOCCLRSTATUS _IO ('D', 22)
2079 #define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook)
2080 #define DIOCSETDEBUG _IOWR('D', 24, u_int32_t)
2081 #ifdef COMPAT_FREEBSD14
2082 #define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states)
2083 #endif
2084 #define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule)
2085 #define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm)
2086 #define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm)
2087 #define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state)
2088 #define DIOCCLRRULECTRS _IO ('D', 38)
2089 #define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit)
2090 #define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit)
2091 #define DIOCKILLSTATESNV _IOWR('D', 41, struct pfioc_nv)
2092 #define DIOCSTARTALTQ _IO ('D', 42)
2093 #define DIOCSTOPALTQ _IO ('D', 43)
2094 #define DIOCADDALTQV0 _IOWR('D', 45, struct pfioc_altq_v0)
2095 #define DIOCADDALTQV1 _IOWR('D', 45, struct pfioc_altq_v1)
2096 #define DIOCGETALTQSV0 _IOWR('D', 47, struct pfioc_altq_v0)
2097 #define DIOCGETALTQSV1 _IOWR('D', 47, struct pfioc_altq_v1)
2098 #define DIOCGETALTQV0 _IOWR('D', 48, struct pfioc_altq_v0)
2099 #define DIOCGETALTQV1 _IOWR('D', 48, struct pfioc_altq_v1)
2100 #define DIOCCHANGEALTQV0 _IOWR('D', 49, struct pfioc_altq_v0)
2101 #define DIOCCHANGEALTQV1 _IOWR('D', 49, struct pfioc_altq_v1)
2102 #define DIOCGETQSTATSV0 _IOWR('D', 50, struct pfioc_qstats_v0)
2103 #define DIOCGETQSTATSV1 _IOWR('D', 50, struct pfioc_qstats_v1)
2104 #define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr)
2105 #define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr)
2106 #define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr)
2107 #define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr)
2108 #define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr)
2109 #define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset)
2110 #define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset)
2111 #define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table)
2112 #define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table)
2113 #define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table)
2114 #define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table)
2115 #define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table)
2116 #define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table)
2117 #define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table)
2118 #define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table)
2119 #define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table)
2120 #define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table)
2121 #define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table)
2122 #define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table)
2123 #define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table)
2124 #define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table)
2125 #define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table)
2126 #define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table)
2127 #define DIOCOSFPFLUSH _IO('D', 78)
2128 #define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl)
2129 #define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl)
2130 #define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans)
2131 #define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans)
2132 #define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans)
2133 #define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes)
2134 #define DIOCCLRSRCNODES _IO('D', 85)
2135 #define DIOCSETHOSTID _IOWR('D', 86, u_int32_t)
2136 #define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface)
2137 #define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface)
2138 #define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface)
2139 #define DIOCKILLSRCNODES _IOWR('D', 91, struct pfioc_src_node_kill)
2140 #define DIOCGIFSPEEDV0 _IOWR('D', 92, struct pf_ifspeed_v0)
2141 #define DIOCGIFSPEEDV1 _IOWR('D', 92, struct pf_ifspeed_v1)
2142 #ifdef COMPAT_FREEBSD14
2143 #define DIOCGETSTATESV2 _IOWR('D', 93, struct pfioc_states_v2)
2144 #endif
2145 #define DIOCGETSYNCOOKIES _IOWR('D', 94, struct pfioc_nv)
2146 #define DIOCSETSYNCOOKIES _IOWR('D', 95, struct pfioc_nv)
2147 #define DIOCKEEPCOUNTERS _IOWR('D', 96, struct pfioc_nv)
2148 #define DIOCKEEPCOUNTERS_FREEBSD13 _IOWR('D', 92, struct pfioc_nv)
2149 #define DIOCADDETHRULE _IOWR('D', 97, struct pfioc_nv)
2150 #define DIOCGETETHRULE _IOWR('D', 98, struct pfioc_nv)
2151 #define DIOCGETETHRULES _IOWR('D', 99, struct pfioc_nv)
2152 #define DIOCGETETHRULESETS _IOWR('D', 100, struct pfioc_nv)
2153 #define DIOCGETETHRULESET _IOWR('D', 101, struct pfioc_nv)
2154 #define DIOCSETREASS _IOWR('D', 102, u_int32_t)
2155
2156 struct pf_ifspeed_v0 {
2157 char ifname[IFNAMSIZ];
2158 u_int32_t baudrate;
2159 };
2160
2161 struct pf_ifspeed_v1 {
2162 char ifname[IFNAMSIZ];
2163 u_int32_t baudrate32;
2164 /* layout identical to struct pf_ifspeed_v0 up to this point */
2165 u_int64_t baudrate;
2166 };
2167
2168 /* Latest version of struct pf_ifspeed_vX */
2169 #define PF_IFSPEED_VERSION 1
2170
2171 /*
2172 * Compatibility and convenience macros
2173 */
2174 #ifndef _KERNEL
2175 #ifdef PFIOC_USE_LATEST
2176 /*
2177 * Maintaining in-tree consumers of the ioctl interface is easier when that
2178 * code can be written in terms old names that refer to the latest interface
2179 * version as that reduces the required changes in the consumers to those
2180 * that are functionally necessary to accommodate a new interface version.
2181 */
2182 #define pfioc_altq __CONCAT(pfioc_altq_v, PFIOC_ALTQ_VERSION)
2183 #define pfioc_qstats __CONCAT(pfioc_qstats_v, PFIOC_QSTATS_VERSION)
2184 #define pf_ifspeed __CONCAT(pf_ifspeed_v, PF_IFSPEED_VERSION)
2185
2186 #define DIOCADDALTQ __CONCAT(DIOCADDALTQV, PFIOC_ALTQ_VERSION)
2187 #define DIOCGETALTQS __CONCAT(DIOCGETALTQSV, PFIOC_ALTQ_VERSION)
2188 #define DIOCGETALTQ __CONCAT(DIOCGETALTQV, PFIOC_ALTQ_VERSION)
2189 #define DIOCCHANGEALTQ __CONCAT(DIOCCHANGEALTQV, PFIOC_ALTQ_VERSION)
2190 #define DIOCGETQSTATS __CONCAT(DIOCGETQSTATSV, PFIOC_QSTATS_VERSION)
2191 #define DIOCGIFSPEED __CONCAT(DIOCGIFSPEEDV, PF_IFSPEED_VERSION)
2192 #else
2193 /*
2194 * When building out-of-tree code that is written for the old interface,
2195 * such as may exist in ports for example, resolve the old struct tags and
2196 * ioctl command names to the v0 versions.
2197 */
2198 #define pfioc_altq __CONCAT(pfioc_altq_v, 0)
2199 #define pfioc_qstats __CONCAT(pfioc_qstats_v, 0)
2200 #define pf_ifspeed __CONCAT(pf_ifspeed_v, 0)
2201
2202 #define DIOCADDALTQ __CONCAT(DIOCADDALTQV, 0)
2203 #define DIOCGETALTQS __CONCAT(DIOCGETALTQSV, 0)
2204 #define DIOCGETALTQ __CONCAT(DIOCGETALTQV, 0)
2205 #define DIOCCHANGEALTQ __CONCAT(DIOCCHANGEALTQV, 0)
2206 #define DIOCGETQSTATS __CONCAT(DIOCGETQSTATSV, 0)
2207 #define DIOCGIFSPEED __CONCAT(DIOCGIFSPEEDV, 0)
2208 #endif /* PFIOC_USE_LATEST */
2209 #endif /* _KERNEL */
2210
2211 #ifdef _KERNEL
2212 LIST_HEAD(pf_ksrc_node_list, pf_ksrc_node);
2213 struct pf_srchash {
2214 struct pf_ksrc_node_list nodes;
2215 struct mtx lock;
2216 };
2217
2218 struct pf_keyhash {
2219 LIST_HEAD(, pf_state_key) keys;
2220 struct mtx lock;
2221 };
2222
2223 struct pf_idhash {
2224 LIST_HEAD(, pf_kstate) states;
2225 struct mtx lock;
2226 };
2227
2228 struct pf_udpendpointhash {
2229 LIST_HEAD(, pf_udp_endpoint) endpoints;
2230 /* refcont is synchronized on the source endpoint's row lock */
2231 struct mtx lock;
2232 };
2233
2234 extern u_long pf_ioctl_maxcount;
2235 VNET_DECLARE(u_long, pf_hashmask);
2236 #define V_pf_hashmask VNET(pf_hashmask)
2237 VNET_DECLARE(u_long, pf_srchashmask);
2238 #define V_pf_srchashmask VNET(pf_srchashmask)
2239 VNET_DECLARE(u_long, pf_udpendpointhashmask);
2240 #define V_pf_udpendpointhashmask VNET(pf_udpendpointhashmask)
2241 #define PF_HASHSIZ (131072)
2242 #define PF_SRCHASHSIZ (PF_HASHSIZ/4)
2243 #define PF_UDPENDHASHSIZ (PF_HASHSIZ/4)
2244 VNET_DECLARE(struct pf_keyhash *, pf_keyhash);
2245 VNET_DECLARE(struct pf_idhash *, pf_idhash);
2246 VNET_DECLARE(struct pf_udpendpointhash *, pf_udpendpointhash);
2247 #define V_pf_keyhash VNET(pf_keyhash)
2248 #define V_pf_idhash VNET(pf_idhash)
2249 #define V_pf_udpendpointhash VNET(pf_udpendpointhash)
2250 VNET_DECLARE(struct pf_srchash *, pf_srchash);
2251 #define V_pf_srchash VNET(pf_srchash)
2252
2253 #define PF_IDHASHID(id) (be64toh(id) % (V_pf_hashmask + 1))
2254 #define PF_IDHASH(s) PF_IDHASHID((s)->id)
2255
2256 VNET_DECLARE(void *, pf_swi_cookie);
2257 #define V_pf_swi_cookie VNET(pf_swi_cookie)
2258 VNET_DECLARE(struct intr_event *, pf_swi_ie);
2259 #define V_pf_swi_ie VNET(pf_swi_ie)
2260
2261 VNET_DECLARE(struct unrhdr64, pf_stateid);
2262 #define V_pf_stateid VNET(pf_stateid)
2263
2264 TAILQ_HEAD(pf_altqqueue, pf_altq);
2265 VNET_DECLARE(struct pf_altqqueue, pf_altqs[4]);
2266 #define V_pf_altqs VNET(pf_altqs)
2267 VNET_DECLARE(struct pf_kpalist, pf_pabuf[3]);
2268 #define V_pf_pabuf VNET(pf_pabuf)
2269
2270 VNET_DECLARE(u_int32_t, ticket_altqs_active);
2271 #define V_ticket_altqs_active VNET(ticket_altqs_active)
2272 VNET_DECLARE(u_int32_t, ticket_altqs_inactive);
2273 #define V_ticket_altqs_inactive VNET(ticket_altqs_inactive)
2274 VNET_DECLARE(int, altqs_inactive_open);
2275 #define V_altqs_inactive_open VNET(altqs_inactive_open)
2276 VNET_DECLARE(u_int32_t, ticket_pabuf);
2277 #define V_ticket_pabuf VNET(ticket_pabuf)
2278 VNET_DECLARE(struct pf_altqqueue *, pf_altqs_active);
2279 #define V_pf_altqs_active VNET(pf_altqs_active)
2280 VNET_DECLARE(struct pf_altqqueue *, pf_altq_ifs_active);
2281 #define V_pf_altq_ifs_active VNET(pf_altq_ifs_active)
2282 VNET_DECLARE(struct pf_altqqueue *, pf_altqs_inactive);
2283 #define V_pf_altqs_inactive VNET(pf_altqs_inactive)
2284 VNET_DECLARE(struct pf_altqqueue *, pf_altq_ifs_inactive);
2285 #define V_pf_altq_ifs_inactive VNET(pf_altq_ifs_inactive)
2286
2287 VNET_DECLARE(struct pf_krulequeue, pf_unlinked_rules);
2288 #define V_pf_unlinked_rules VNET(pf_unlinked_rules)
2289
2290 #ifdef PF_WANT_32_TO_64_COUNTER
2291 LIST_HEAD(allkiflist_head, pfi_kkif);
2292 VNET_DECLARE(struct allkiflist_head, pf_allkiflist);
2293 #define V_pf_allkiflist VNET(pf_allkiflist)
2294 VNET_DECLARE(size_t, pf_allkifcount);
2295 #define V_pf_allkifcount VNET(pf_allkifcount)
2296 VNET_DECLARE(struct pfi_kkif *, pf_kifmarker);
2297 #define V_pf_kifmarker VNET(pf_kifmarker)
2298
2299 LIST_HEAD(allrulelist_head, pf_krule);
2300 VNET_DECLARE(struct allrulelist_head, pf_allrulelist);
2301 #define V_pf_allrulelist VNET(pf_allrulelist)
2302 VNET_DECLARE(size_t, pf_allrulecount);
2303 #define V_pf_allrulecount VNET(pf_allrulecount)
2304 VNET_DECLARE(struct pf_krule *, pf_rulemarker);
2305 #define V_pf_rulemarker VNET(pf_rulemarker)
2306 #endif
2307
2308 int pf_start(void);
2309 int pf_stop(void);
2310 void pf_initialize(void);
2311 void pf_mtag_initialize(void);
2312 void pf_mtag_cleanup(void);
2313 void pf_cleanup(void);
2314
2315 struct pf_mtag *pf_get_mtag(struct mbuf *);
2316
2317 extern void pf_calc_skip_steps(struct pf_krulequeue *);
2318 #ifdef ALTQ
2319 extern void pf_altq_ifnet_event(struct ifnet *, int);
2320 #endif
2321 VNET_DECLARE(uma_zone_t, pf_state_z);
2322 #define V_pf_state_z VNET(pf_state_z)
2323 VNET_DECLARE(uma_zone_t, pf_state_key_z);
2324 #define V_pf_state_key_z VNET(pf_state_key_z)
2325 VNET_DECLARE(uma_zone_t, pf_udp_mapping_z);
2326 #define V_pf_udp_mapping_z VNET(pf_udp_mapping_z)
2327 VNET_DECLARE(uma_zone_t, pf_state_scrub_z);
2328 #define V_pf_state_scrub_z VNET(pf_state_scrub_z)
2329
2330 extern void pf_purge_thread(void *);
2331 extern void pf_unload_vnet_purge(void);
2332 extern void pf_intr(void *);
2333 extern void pf_purge_expired_src_nodes(void);
2334
2335 extern int pf_remove_state(struct pf_kstate *);
2336 extern int pf_state_insert(struct pfi_kkif *,
2337 struct pfi_kkif *,
2338 struct pf_state_key *,
2339 struct pf_state_key *,
2340 struct pf_kstate *);
2341 extern struct pf_kstate *pf_alloc_state(int);
2342 extern void pf_free_state(struct pf_kstate *);
2343 extern void pf_killstates(struct pf_kstate_kill *,
2344 unsigned int *);
2345 extern unsigned int pf_clear_states(const struct pf_kstate_kill *);
2346
2347 static __inline void
pf_ref_state(struct pf_kstate * s)2348 pf_ref_state(struct pf_kstate *s)
2349 {
2350
2351 refcount_acquire(&s->refs);
2352 }
2353
2354 static __inline int
pf_release_state(struct pf_kstate * s)2355 pf_release_state(struct pf_kstate *s)
2356 {
2357
2358 if (refcount_release(&s->refs)) {
2359 pf_free_state(s);
2360 return (1);
2361 } else
2362 return (0);
2363 }
2364
2365 static __inline int
pf_release_staten(struct pf_kstate * s,u_int n)2366 pf_release_staten(struct pf_kstate *s, u_int n)
2367 {
2368
2369 if (refcount_releasen(&s->refs, n)) {
2370 pf_free_state(s);
2371 return (1);
2372 } else
2373 return (0);
2374 }
2375
2376 static __inline uint64_t
pf_get_uptime(void)2377 pf_get_uptime(void)
2378 {
2379 struct timeval t;
2380 microuptime(&t);
2381 return ((t.tv_sec * 1000) + (t.tv_usec / 1000));
2382 }
2383
2384 static __inline uint64_t
pf_get_time(void)2385 pf_get_time(void)
2386 {
2387 struct timeval t;
2388 microtime(&t);
2389 return ((t.tv_sec * 1000) + (t.tv_usec / 1000));
2390 }
2391
2392 extern struct pf_kstate *pf_find_state_byid(uint64_t, uint32_t);
2393 extern struct pf_kstate *pf_find_state_all(
2394 const struct pf_state_key_cmp *,
2395 u_int, int *);
2396 extern bool pf_find_state_all_exists(
2397 const struct pf_state_key_cmp *,
2398 u_int);
2399 extern struct pf_udp_mapping *pf_udp_mapping_find(struct pf_udp_endpoint_cmp
2400 *endpoint);
2401 extern struct pf_udp_mapping *pf_udp_mapping_create(sa_family_t af,
2402 struct pf_addr *src_addr, uint16_t src_port,
2403 struct pf_addr *nat_addr, uint16_t nat_port);
2404 extern int pf_udp_mapping_insert(struct pf_udp_mapping
2405 *mapping);
2406 extern void pf_udp_mapping_release(struct pf_udp_mapping
2407 *mapping);
2408 uint32_t pf_hashsrc(struct pf_addr *, sa_family_t);
2409 extern bool pf_src_node_exists(struct pf_ksrc_node **,
2410 struct pf_srchash *);
2411 extern struct pf_ksrc_node *pf_find_src_node(struct pf_addr *,
2412 struct pf_krule *, sa_family_t,
2413 struct pf_srchash **, pf_sn_types_t, bool);
2414 extern void pf_unlink_src_node(struct pf_ksrc_node *);
2415 extern u_int pf_free_src_nodes(struct pf_ksrc_node_list *);
2416 extern void pf_print_state(struct pf_kstate *);
2417 extern void pf_print_flags(uint16_t);
2418 extern int pf_addr_wrap_neq(struct pf_addr_wrap *,
2419 struct pf_addr_wrap *);
2420 extern u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t,
2421 u_int8_t);
2422 extern u_int16_t pf_proto_cksum_fixup(struct mbuf *, u_int16_t,
2423 u_int16_t, u_int16_t, u_int8_t);
2424
2425 VNET_DECLARE(struct ifnet *, sync_ifp);
2426 #define V_sync_ifp VNET(sync_ifp);
2427 VNET_DECLARE(struct pf_krule, pf_default_rule);
2428 #define V_pf_default_rule VNET(pf_default_rule)
2429 extern void pf_addrcpy(struct pf_addr *, const struct pf_addr *,
2430 sa_family_t);
2431 void pf_free_rule(struct pf_krule *);
2432
2433 int pf_test_eth(int, int, struct ifnet *, struct mbuf **, struct inpcb *);
2434 int pf_scan_sctp(struct pf_pdesc *);
2435 #if defined(INET) || defined(INET6)
2436 int pf_test(sa_family_t, int, int, struct ifnet *, struct mbuf **, struct inpcb *,
2437 struct pf_rule_actions *);
2438 #endif
2439 #ifdef INET
2440 int pf_normalize_ip(u_short *, struct pf_pdesc *);
2441 #endif /* INET */
2442
2443 void pf_poolmask(struct pf_addr *, struct pf_addr*,
2444 struct pf_addr *, struct pf_addr *, sa_family_t);
2445 void pf_addr_inc(struct pf_addr *, sa_family_t);
2446 #ifdef INET6
2447 int pf_normalize_ip6(int, u_short *, struct pf_pdesc *);
2448 int pf_max_frag_size(struct mbuf *);
2449 int pf_refragment6(struct ifnet *, struct mbuf **, struct m_tag *,
2450 struct ifnet *, bool);
2451 #endif /* INET6 */
2452
2453 int pf_multihome_scan_init(int, int, struct pf_pdesc *);
2454 int pf_multihome_scan_asconf(int, int, struct pf_pdesc *);
2455
2456 u_int32_t pf_new_isn(struct pf_kstate *);
2457 void *pf_pull_hdr(const struct mbuf *, int, void *, int, u_short *, u_short *,
2458 sa_family_t);
2459 void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t);
2460 void pf_change_proto_a(struct mbuf *, void *, u_int16_t *, u_int32_t,
2461 u_int8_t);
2462 void pf_change_tcp_a(struct mbuf *, void *, u_int16_t *, u_int32_t);
2463 int pf_patch_16(struct pf_pdesc *, void *, u_int16_t, bool);
2464 int pf_patch_32(struct pf_pdesc *, void *, u_int32_t, bool);
2465 void pf_send_deferred_syn(struct pf_kstate *);
2466 int pf_match_addr(u_int8_t, const struct pf_addr *,
2467 const struct pf_addr *, const struct pf_addr *, sa_family_t);
2468 int pf_match_addr_range(const struct pf_addr *, const struct pf_addr *,
2469 const struct pf_addr *, sa_family_t);
2470 int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t);
2471
2472 void pf_normalize_init(void);
2473 void pf_normalize_cleanup(void);
2474 int pf_normalize_tcp(struct pf_pdesc *);
2475 void pf_normalize_tcp_cleanup(struct pf_kstate *);
2476 int pf_normalize_tcp_init(struct pf_pdesc *,
2477 struct tcphdr *, struct pf_state_peer *);
2478 int pf_normalize_tcp_stateful(struct pf_pdesc *,
2479 u_short *, struct tcphdr *, struct pf_kstate *,
2480 struct pf_state_peer *, struct pf_state_peer *, int *);
2481 int pf_normalize_sctp_init(struct pf_pdesc *,
2482 struct pf_state_peer *, struct pf_state_peer *);
2483 int pf_normalize_sctp(struct pf_pdesc *);
2484 u_int32_t
2485 pf_state_expires(const struct pf_kstate *);
2486 void pf_purge_expired_fragments(void);
2487 void pf_purge_fragments(uint32_t);
2488 int pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kkif *,
2489 int);
2490 int pf_socket_lookup(struct pf_pdesc *);
2491 struct pf_state_key *pf_alloc_state_key(int);
2492 int pf_translate(struct pf_pdesc *, struct pf_addr *, u_int16_t,
2493 struct pf_addr *, u_int16_t, u_int16_t, int);
2494 int pf_translate_af(struct pf_pdesc *);
2495 bool pf_init_threshold(struct pf_kthreshold *, uint32_t, uint32_t);
2496
2497 void pfr_initialize(void);
2498 void pfr_cleanup(void);
2499 int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t);
2500 void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t,
2501 u_int64_t, int, int, int);
2502 int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, sa_family_t,
2503 pf_addr_filter_func_t);
2504 void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *);
2505 struct pfr_ktable *
2506 pfr_attach_table(struct pf_kruleset *, char *);
2507 struct pfr_ktable *
2508 pfr_eth_attach_table(struct pf_keth_ruleset *, char *);
2509 void pfr_detach_table(struct pfr_ktable *);
2510 int pfr_clr_tables(struct pfr_table *, int *, int);
2511 int pfr_add_tables(struct pfr_table *, int, int *, int);
2512 int pfr_del_tables(struct pfr_table *, int, int *, int);
2513 int pfr_table_count(struct pfr_table *, int);
2514 int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int);
2515 int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int);
2516 int pfr_clr_tstats(struct pfr_table *, int, int *, int);
2517 int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int);
2518 int pfr_clr_addrs(struct pfr_table *, int *, int);
2519 int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *, time_t);
2520 int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
2521 int);
2522 int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
2523 int);
2524 int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
2525 int *, int *, int *, int, u_int32_t);
2526 int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int);
2527 int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int);
2528 int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *,
2529 int);
2530 int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
2531 int);
2532 int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int);
2533 int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int);
2534 int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int);
2535 int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *,
2536 int *, u_int32_t, int);
2537
2538 MALLOC_DECLARE(PFI_MTYPE);
2539 VNET_DECLARE(struct pfi_kkif *, pfi_all);
2540 #define V_pfi_all VNET(pfi_all)
2541
2542 void pfi_initialize(void);
2543 void pfi_initialize_vnet(void);
2544 void pfi_cleanup(void);
2545 void pfi_cleanup_vnet(void);
2546 void pfi_kkif_ref(struct pfi_kkif *);
2547 void pfi_kkif_unref(struct pfi_kkif *);
2548 struct pfi_kkif *pfi_kkif_find(const char *);
2549 struct pfi_kkif *pfi_kkif_attach(struct pfi_kkif *, const char *);
2550 int pfi_kkif_match(struct pfi_kkif *, struct pfi_kkif *);
2551 void pfi_kkif_purge(void);
2552 int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *,
2553 sa_family_t);
2554 int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t);
2555 void pfi_dynaddr_remove(struct pfi_dynaddr *);
2556 void pfi_dynaddr_copyout(struct pf_addr_wrap *);
2557 void pfi_update_status(const char *, struct pf_status *);
2558 void pfi_get_ifaces(const char *, struct pfi_kif *, int *);
2559 int pfi_set_flags(const char *, int);
2560 int pfi_clear_flags(const char *, int);
2561
2562 int pf_match_tag(struct mbuf *, struct pf_krule *, int *, int);
2563 int pf_tag_packet(struct pf_pdesc *, int);
2564 int pf_addr_cmp(struct pf_addr *, struct pf_addr *,
2565 sa_family_t);
2566
2567 uint8_t* pf_find_tcpopt(u_int8_t *, u_int8_t *, size_t,
2568 u_int8_t, u_int8_t);
2569 u_int16_t pf_get_mss(struct pf_pdesc *);
2570 u_int8_t pf_get_wscale(struct pf_pdesc *);
2571 struct mbuf *pf_build_tcp(const struct pf_krule *, sa_family_t,
2572 const struct pf_addr *, const struct pf_addr *,
2573 u_int16_t, u_int16_t, u_int32_t, u_int32_t,
2574 u_int8_t, u_int16_t, u_int16_t, u_int8_t, int,
2575 u_int16_t, u_int16_t, u_int, int);
2576 void pf_send_tcp(const struct pf_krule *, sa_family_t,
2577 const struct pf_addr *, const struct pf_addr *,
2578 u_int16_t, u_int16_t, u_int32_t, u_int32_t,
2579 u_int8_t, u_int16_t, u_int16_t, u_int8_t, int,
2580 u_int16_t, u_int16_t, int);
2581
2582 void pf_syncookies_init(void);
2583 void pf_syncookies_cleanup(void);
2584 int pf_get_syncookies(struct pfioc_nv *);
2585 int pf_set_syncookies(struct pfioc_nv *);
2586 int pf_synflood_check(struct pf_pdesc *);
2587 void pf_syncookie_send(struct pf_pdesc *);
2588 bool pf_syncookie_check(struct pf_pdesc *);
2589 u_int8_t pf_syncookie_validate(struct pf_pdesc *);
2590 struct mbuf * pf_syncookie_recreate_syn(struct pf_pdesc *);
2591
2592 VNET_DECLARE(struct pf_kstatus, pf_status);
2593 #define V_pf_status VNET(pf_status)
2594
2595 struct pf_limit {
2596 uma_zone_t zone;
2597 u_int limit;
2598 };
2599 VNET_DECLARE(struct pf_limit, pf_limits[PF_LIMIT_MAX]);
2600 #define V_pf_limits VNET(pf_limits)
2601
2602 #endif /* _KERNEL */
2603
2604 #ifdef _KERNEL
2605 struct pf_nl_pooladdr {
2606 u_int32_t action;
2607 u_int32_t ticket;
2608 u_int32_t nr;
2609 u_int32_t r_num;
2610 u_int8_t r_action;
2611 u_int8_t r_last;
2612 u_int8_t af;
2613 char anchor[MAXPATHLEN];
2614 struct pf_pooladdr addr;
2615 /* Above this is identical to pfioc_pooladdr */
2616 int which;
2617 };
2618
2619 VNET_DECLARE(struct pf_kanchor_global, pf_anchors);
2620 #define V_pf_anchors VNET(pf_anchors)
2621 VNET_DECLARE(struct pf_kanchor, pf_main_anchor);
2622 #define V_pf_main_anchor VNET(pf_main_anchor)
2623 VNET_DECLARE(struct pf_keth_anchor_global, pf_keth_anchors);
2624 #define V_pf_keth_anchors VNET(pf_keth_anchors)
2625 #define pf_main_ruleset V_pf_main_anchor.ruleset
2626
2627 VNET_DECLARE(struct pf_keth_anchor, pf_main_keth_anchor);
2628 #define V_pf_main_keth_anchor VNET(pf_main_keth_anchor)
2629 VNET_DECLARE(struct pf_keth_ruleset*, pf_keth);
2630 #define V_pf_keth VNET(pf_keth)
2631
2632 void pf_init_kruleset(struct pf_kruleset *);
2633 void pf_init_keth(struct pf_keth_ruleset *);
2634 int pf_kanchor_setup(struct pf_krule *,
2635 const struct pf_kruleset *, const char *);
2636 int pf_kanchor_copyout(const struct pf_kruleset *,
2637 const struct pf_krule *, char *, size_t);
2638 int pf_kanchor_nvcopyout(const struct pf_kruleset *,
2639 const struct pf_krule *, nvlist_t *);
2640 void pf_remove_kanchor(struct pf_krule *);
2641 void pf_remove_if_empty_kruleset(struct pf_kruleset *);
2642 struct pf_kruleset *pf_find_kruleset(const char *);
2643 struct pf_kruleset *pf_get_leaf_kruleset(char *, char **);
2644 struct pf_kruleset *pf_find_or_create_kruleset(const char *);
2645 void pf_rs_initialize(void);
2646
2647
2648 struct pf_krule *pf_krule_alloc(void);
2649
2650 void pf_remove_if_empty_keth_ruleset(
2651 struct pf_keth_ruleset *);
2652 struct pf_keth_ruleset *pf_find_keth_ruleset(const char *);
2653 struct pf_keth_anchor *pf_find_keth_anchor(const char *);
2654 int pf_keth_anchor_setup(struct pf_keth_rule *,
2655 const struct pf_keth_ruleset *, const char *);
2656 int pf_keth_anchor_nvcopyout(
2657 const struct pf_keth_ruleset *,
2658 const struct pf_keth_rule *, nvlist_t *);
2659 struct pf_keth_ruleset *pf_find_or_create_keth_ruleset(const char *);
2660 void pf_keth_anchor_remove(struct pf_keth_rule *);
2661
2662 int pf_ioctl_getrules(struct pfioc_rule *);
2663 int pf_ioctl_addrule(struct pf_krule *, uint32_t,
2664 uint32_t, const char *, const char *, uid_t uid,
2665 pid_t);
2666 void pf_ioctl_clear_status(void);
2667 int pf_ioctl_get_timeout(int, int *);
2668 int pf_ioctl_set_timeout(int, int, int *);
2669 int pf_ioctl_get_limit(int, unsigned int *);
2670 int pf_ioctl_set_limit(int, unsigned int, unsigned int *);
2671 int pf_ioctl_begin_addrs(uint32_t *);
2672 int pf_ioctl_add_addr(struct pf_nl_pooladdr *);
2673 int pf_ioctl_get_addrs(struct pf_nl_pooladdr *);
2674 int pf_ioctl_get_addr(struct pf_nl_pooladdr *);
2675 int pf_ioctl_get_rulesets(struct pfioc_ruleset *);
2676 int pf_ioctl_get_ruleset(struct pfioc_ruleset *);
2677 int pf_ioctl_natlook(struct pfioc_natlook *);
2678
2679 void pf_krule_free(struct pf_krule *);
2680 void pf_krule_clear_counters(struct pf_krule *);
2681 void pf_addr_copyout(struct pf_addr_wrap *);
2682 #endif
2683
2684 /* The fingerprint functions can be linked into userland programs (tcpdump) */
2685 int pf_osfp_add(struct pf_osfp_ioctl *);
2686 #ifdef _KERNEL
2687 struct pf_osfp_enlist *
2688 pf_osfp_fingerprint(struct pf_pdesc *, const struct tcphdr *);
2689 #endif /* _KERNEL */
2690 void pf_osfp_flush(void);
2691 int pf_osfp_get(struct pf_osfp_ioctl *);
2692 int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t);
2693
2694 #ifdef _KERNEL
2695 void pf_print_host(struct pf_addr *, u_int16_t, sa_family_t);
2696
2697 enum pf_test_status pf_step_into_anchor(struct pf_test_ctx *, struct pf_krule *);
2698 enum pf_test_status pf_match_rule(struct pf_test_ctx *, struct pf_kruleset *);
2699 void pf_step_into_keth_anchor(struct pf_keth_anchor_stackframe *,
2700 int *, struct pf_keth_ruleset **,
2701 struct pf_keth_rule **, struct pf_keth_rule **,
2702 int *);
2703 int pf_step_out_of_keth_anchor(struct pf_keth_anchor_stackframe *,
2704 int *, struct pf_keth_ruleset **,
2705 struct pf_keth_rule **, struct pf_keth_rule **,
2706 int *);
2707
2708 u_short pf_map_addr(u_int8_t, struct pf_krule *,
2709 struct pf_addr *, struct pf_addr *,
2710 struct pfi_kkif **nkif, struct pf_addr *,
2711 struct pf_kpool *);
2712 u_short pf_map_addr_sn(u_int8_t, struct pf_krule *,
2713 struct pf_addr *, struct pf_addr *,
2714 struct pfi_kkif **nkif, struct pf_addr *,
2715 struct pf_ksrc_node **, struct pf_srchash **,
2716 struct pf_kpool *, pf_sn_types_t);
2717 int pf_get_transaddr_af(struct pf_krule *,
2718 struct pf_pdesc *);
2719 u_short pf_get_translation(struct pf_test_ctx *);
2720 u_short pf_get_transaddr(struct pf_test_ctx *,
2721 struct pf_krule *,
2722 u_int8_t, struct pf_kpool *);
2723 int pf_translate_compat(struct pf_test_ctx *);
2724
2725 int pf_state_key_setup(struct pf_pdesc *,
2726 u_int16_t, u_int16_t,
2727 struct pf_state_key **sk, struct pf_state_key **nk);
2728 struct pf_state_key *pf_state_key_clone(const struct pf_state_key *);
2729 void pf_rule_to_actions(struct pf_krule *,
2730 struct pf_rule_actions *);
2731 int pf_normalize_mss(struct pf_pdesc *pd);
2732 #if defined(INET) || defined(INET6)
2733 void pf_scrub(struct pf_pdesc *);
2734 #endif
2735
2736 struct pfi_kkif *pf_kkif_create(int);
2737 void pf_kkif_free(struct pfi_kkif *);
2738 void pf_kkif_zero(struct pfi_kkif *);
2739
2740
2741 /* NAT64 functions. */
2742 int inet_nat64(int, const void *, void *, const void *, u_int8_t);
2743 int inet_nat64_inet(const void *, void *, const void *, u_int8_t);
2744 int inet_nat64_inet6(const void *, void *, const void *, u_int8_t);
2745
2746 int inet_nat46(int, const void *, void *, const void *, u_int8_t);
2747 int inet_nat46_inet(const void *, void *, const void *, u_int8_t);
2748 int inet_nat46_inet6(const void *, void *, const void *, u_int8_t);
2749
2750 #endif /* _KERNEL */
2751
2752 #endif /* _NET_PFVAR_H_ */
2753