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 #define PF_MATCHA(n, a, m, b, f) \
512 pf_match_addr(n, a, m, b, f)
513
514 #define PF_ACPY(a, b, f) \
515 pf_addrcpy(a, b, f)
516
517 #define PF_AINC(a, f) \
518 pf_addr_inc(a, f)
519
520 #define PF_POOLMASK(a, b, c, d, f) \
521 pf_poolmask(a, b, c, d, f)
522
523 #else
524
525 /* Just IPv6 */
526
527 #ifdef PF_INET6_ONLY
528
529 #define PF_AEQ(a, b, c) \
530 ((a)->addr32[3] == (b)->addr32[3] && \
531 (a)->addr32[2] == (b)->addr32[2] && \
532 (a)->addr32[1] == (b)->addr32[1] && \
533 (a)->addr32[0] == (b)->addr32[0]) \
534
535 #define PF_ANEQ(a, b, c) \
536 ((a)->addr32[3] != (b)->addr32[3] || \
537 (a)->addr32[2] != (b)->addr32[2] || \
538 (a)->addr32[1] != (b)->addr32[1] || \
539 (a)->addr32[0] != (b)->addr32[0]) \
540
541 #define PF_AZERO(a, c) \
542 (!(a)->addr32[0] && \
543 !(a)->addr32[1] && \
544 !(a)->addr32[2] && \
545 !(a)->addr32[3] ) \
546
547 #define PF_MATCHA(n, a, m, b, f) \
548 pf_match_addr(n, a, m, b, f)
549
550 #define PF_ACPY(a, b, f) \
551 pf_addrcpy(a, b, f)
552
553 #define PF_AINC(a, f) \
554 pf_addr_inc(a, f)
555
556 #define PF_POOLMASK(a, b, c, d, f) \
557 pf_poolmask(a, b, c, d, f)
558
559 #else
560
561 /* Just IPv4 */
562 #ifdef PF_INET_ONLY
563
564 #define PF_AEQ(a, b, c) \
565 ((a)->addr32[0] == (b)->addr32[0])
566
567 #define PF_ANEQ(a, b, c) \
568 ((a)->addr32[0] != (b)->addr32[0])
569
570 #define PF_AZERO(a, c) \
571 (!(a)->addr32[0])
572
573 #define PF_MATCHA(n, a, m, b, f) \
574 pf_match_addr(n, a, m, b, f)
575
576 #define PF_ACPY(a, b, f) \
577 (a)->v4.s_addr = (b)->v4.s_addr
578
579 #define PF_AINC(a, f) \
580 do { \
581 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \
582 } while (0)
583
584 #define PF_POOLMASK(a, b, c, d, f) \
585 do { \
586 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \
587 (((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \
588 } while (0)
589
590 #endif /* PF_INET_ONLY */
591 #endif /* PF_INET6_ONLY */
592 #endif /* PF_INET_INET6 */
593
594 #ifdef _KERNEL
595 #ifdef INET6
596 static void inline
pf_addrcpy(struct pf_addr * dst,const struct pf_addr * src,sa_family_t af)597 pf_addrcpy(struct pf_addr *dst, const struct pf_addr *src, sa_family_t af)
598 {
599 switch (af) {
600 #ifdef INET
601 case AF_INET:
602 memcpy(&dst->v4, &src->v4, sizeof(dst->v4));
603 break;
604 #endif /* INET */
605 case AF_INET6:
606 memcpy(&dst->v6, &src->v6, sizeof(dst->v6));
607 break;
608 }
609 }
610 #endif /* INET6 */
611 #endif
612
613 /*
614 * XXX callers not FIB-aware in our version of pf yet.
615 * OpenBSD fixed it later it seems, 2010/05/07 13:33:16 claudio.
616 */
617 #define PF_MISMATCHAW(aw, x, af, neg, ifp, rtid) \
618 ( \
619 (((aw)->type == PF_ADDR_NOROUTE && \
620 pf_routable((x), (af), NULL, (rtid))) || \
621 (((aw)->type == PF_ADDR_URPFFAILED && (ifp) != NULL && \
622 pf_routable((x), (af), (ifp), (rtid))) || \
623 ((aw)->type == PF_ADDR_TABLE && \
624 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \
625 ((aw)->type == PF_ADDR_DYNIFTL && \
626 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \
627 ((aw)->type == PF_ADDR_RANGE && \
628 !pf_match_addr_range(&(aw)->v.a.addr, \
629 &(aw)->v.a.mask, (x), (af))) || \
630 ((aw)->type == PF_ADDR_ADDRMASK && \
631 !PF_AZERO(&(aw)->v.a.mask, (af)) && \
632 !PF_MATCHA(0, &(aw)->v.a.addr, \
633 &(aw)->v.a.mask, (x), (af))))) != \
634 (neg) \
635 )
636
637 #define PF_ALGNMNT(off) (((off) % 2) == 0)
638
639 /*
640 * At the moment there are no rules which have both NAT and RDR actions,
641 * apart from af-to rules, but those don't to source tracking for address
642 * translation. And the r->rdr pool is used for both NAT and RDR.
643 * So there is no PF_SN_RDR.
644 */
645 enum pf_sn_types { PF_SN_LIMIT, PF_SN_NAT, PF_SN_ROUTE, PF_SN_MAX };
646 typedef enum pf_sn_types pf_sn_types_t;
647 #define PF_SN_TYPE_NAMES { \
648 "limit source-track", \
649 "NAT/RDR sticky-address", \
650 "route sticky-address", \
651 NULL \
652 }
653
654 #ifdef _KERNEL
655
656 struct pf_kpooladdr {
657 struct pf_addr_wrap addr;
658 TAILQ_ENTRY(pf_kpooladdr) entries;
659 char ifname[IFNAMSIZ];
660 struct pfi_kkif *kif;
661 };
662
663 TAILQ_HEAD(pf_kpalist, pf_kpooladdr);
664
665 struct pf_kpool {
666 struct mtx mtx;
667 struct pf_kpalist list;
668 struct pf_kpooladdr *cur;
669 struct pf_poolhashkey key;
670 struct pf_addr counter;
671 struct pf_mape_portset mape;
672 int tblidx;
673 u_int16_t proxy_port[2];
674 u_int8_t opts;
675 };
676
677 struct pf_rule_actions {
678 struct pf_addr rt_addr;
679 struct pfi_kkif *rt_kif;
680 int32_t rtableid;
681 uint32_t flags;
682 uint16_t qid;
683 uint16_t pqid;
684 uint16_t max_mss;
685 uint16_t dnpipe;
686 uint16_t dnrpipe; /* Reverse direction pipe */
687 uint8_t log;
688 uint8_t set_tos;
689 uint8_t min_ttl;
690 uint8_t set_prio[2];
691 uint8_t rt;
692 uint8_t allow_opts;
693 };
694
695 union pf_keth_rule_ptr {
696 struct pf_keth_rule *ptr;
697 uint32_t nr;
698 };
699
700 struct pf_keth_rule_addr {
701 uint8_t addr[ETHER_ADDR_LEN];
702 uint8_t mask[ETHER_ADDR_LEN];
703 bool neg;
704 uint8_t isset;
705 };
706
707 struct pf_keth_anchor;
708
709 TAILQ_HEAD(pf_keth_ruleq, pf_keth_rule);
710
711 struct pf_keth_ruleset {
712 struct pf_keth_ruleq rules[2];
713 struct pf_keth_rules {
714 struct pf_keth_ruleq *rules;
715 int open;
716 uint32_t ticket;
717 } active, inactive;
718 struct vnet *vnet;
719 struct pf_keth_anchor *anchor;
720 };
721
722 RB_HEAD(pf_keth_anchor_global, pf_keth_anchor);
723 RB_HEAD(pf_keth_anchor_node, pf_keth_anchor);
724 struct pf_keth_anchor {
725 RB_ENTRY(pf_keth_anchor) entry_node;
726 RB_ENTRY(pf_keth_anchor) entry_global;
727 struct pf_keth_anchor *parent;
728 struct pf_keth_anchor_node children;
729 char name[PF_ANCHOR_NAME_SIZE];
730 char path[MAXPATHLEN];
731 struct pf_keth_ruleset ruleset;
732 int refcnt; /* anchor rules */
733 uint8_t anchor_relative;
734 uint8_t anchor_wildcard;
735 };
736 RB_PROTOTYPE(pf_keth_anchor_node, pf_keth_anchor, entry_node,
737 pf_keth_anchor_compare);
738 RB_PROTOTYPE(pf_keth_anchor_global, pf_keth_anchor, entry_global,
739 pf_keth_anchor_compare);
740
741 struct pf_keth_rule {
742 #define PFE_SKIP_IFP 0
743 #define PFE_SKIP_DIR 1
744 #define PFE_SKIP_PROTO 2
745 #define PFE_SKIP_SRC_ADDR 3
746 #define PFE_SKIP_DST_ADDR 4
747 #define PFE_SKIP_SRC_IP_ADDR 5
748 #define PFE_SKIP_DST_IP_ADDR 6
749 #define PFE_SKIP_COUNT 7
750 union pf_keth_rule_ptr skip[PFE_SKIP_COUNT];
751
752 TAILQ_ENTRY(pf_keth_rule) entries;
753
754 struct pf_keth_anchor *anchor;
755 u_int8_t anchor_relative;
756 u_int8_t anchor_wildcard;
757
758 uint32_t nr;
759
760 bool quick;
761
762 /* Filter */
763 char ifname[IFNAMSIZ];
764 struct pfi_kkif *kif;
765 bool ifnot;
766 uint8_t direction;
767 uint16_t proto;
768 struct pf_keth_rule_addr src, dst;
769 struct pf_rule_addr ipsrc, ipdst;
770 char match_tagname[PF_TAG_NAME_SIZE];
771 uint16_t match_tag;
772 bool match_tag_not;
773
774
775 /* Stats */
776 counter_u64_t evaluations;
777 counter_u64_t packets[2];
778 counter_u64_t bytes[2];
779 time_t *timestamp;
780
781 /* Action */
782 char qname[PF_QNAME_SIZE];
783 int qid;
784 char tagname[PF_TAG_NAME_SIZE];
785 uint16_t tag;
786 char bridge_to_name[IFNAMSIZ];
787 struct pfi_kkif *bridge_to;
788 uint8_t action;
789 uint16_t dnpipe;
790 uint32_t dnflags;
791
792 char label[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE];
793 uint32_t ridentifier;
794 };
795
796 RB_HEAD(pf_krule_global, pf_krule);
797 RB_PROTOTYPE(pf_krule_global, pf_krule, entry_global, pf_krule_compare);
798
799 struct pf_krule {
800 struct pf_rule_addr src;
801 struct pf_rule_addr dst;
802 struct pf_krule *skip[PF_SKIP_COUNT];
803 char label[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE];
804 uint32_t ridentifier;
805 char ifname[IFNAMSIZ];
806 char rcv_ifname[IFNAMSIZ];
807 char qname[PF_QNAME_SIZE];
808 char pqname[PF_QNAME_SIZE];
809 char tagname[PF_TAG_NAME_SIZE];
810 char match_tagname[PF_TAG_NAME_SIZE];
811
812 char overload_tblname[PF_TABLE_NAME_SIZE];
813
814 TAILQ_ENTRY(pf_krule) entries;
815 struct pf_kpool nat;
816 struct pf_kpool rdr;
817 struct pf_kpool route;
818
819 struct pf_counter_u64 evaluations;
820 struct pf_counter_u64 packets[2];
821 struct pf_counter_u64 bytes[2];
822 time_t *timestamp;
823
824 struct pfi_kkif *kif;
825 struct pfi_kkif *rcv_kif;
826 struct pf_kanchor *anchor;
827 struct pfr_ktable *overload_tbl;
828
829 pf_osfp_t os_fingerprint;
830
831 int32_t rtableid;
832 u_int32_t timeout[PFTM_MAX];
833 u_int32_t max_states;
834 u_int32_t max_src_nodes;
835 u_int32_t max_src_states;
836 u_int32_t max_src_conn;
837 struct {
838 u_int32_t limit;
839 u_int32_t seconds;
840 } max_src_conn_rate;
841 u_int16_t qid;
842 u_int16_t pqid;
843 u_int16_t dnpipe;
844 u_int16_t dnrpipe;
845 u_int32_t free_flags;
846 u_int32_t nr;
847 u_int32_t prob;
848 uid_t cuid;
849 pid_t cpid;
850
851 counter_u64_t states_cur;
852 counter_u64_t states_tot;
853 counter_u64_t src_nodes[PF_SN_MAX];
854
855 u_int16_t return_icmp;
856 u_int16_t return_icmp6;
857 u_int16_t max_mss;
858 u_int16_t tag;
859 u_int16_t match_tag;
860 u_int16_t scrub_flags;
861
862 struct pf_rule_uid uid;
863 struct pf_rule_gid gid;
864
865 u_int32_t rule_flag;
866 uint32_t rule_ref;
867 u_int8_t action;
868 u_int8_t direction;
869 u_int8_t log;
870 u_int8_t logif;
871 u_int8_t quick;
872 u_int8_t ifnot;
873 u_int8_t match_tag_not;
874 u_int8_t natpass;
875
876 u_int8_t keep_state;
877 sa_family_t af;
878 u_int8_t proto;
879 u_int8_t type;
880 u_int8_t code;
881 u_int8_t flags;
882 u_int8_t flagset;
883 u_int8_t min_ttl;
884 u_int8_t allow_opts;
885 u_int8_t rt;
886 u_int8_t return_ttl;
887 u_int8_t tos;
888 u_int8_t set_tos;
889 u_int8_t anchor_relative;
890 u_int8_t anchor_wildcard;
891
892 u_int8_t flush;
893 u_int8_t prio;
894 u_int8_t set_prio[2];
895 sa_family_t naf;
896 u_int8_t rcvifnot;
897
898 struct {
899 struct pf_addr addr;
900 u_int16_t port;
901 } divert;
902 u_int8_t md5sum[PF_MD5_DIGEST_LENGTH];
903 RB_ENTRY(pf_krule) entry_global;
904
905 #ifdef PF_WANT_32_TO_64_COUNTER
906 LIST_ENTRY(pf_krule) allrulelist;
907 bool allrulelinked;
908 #endif
909 };
910
911 struct pf_krule_item {
912 SLIST_ENTRY(pf_krule_item) entry;
913 struct pf_krule *r;
914 };
915
916 SLIST_HEAD(pf_krule_slist, pf_krule_item);
917
918 struct pf_ksrc_node {
919 LIST_ENTRY(pf_ksrc_node) entry;
920 struct pf_addr addr;
921 struct pf_addr raddr;
922 struct pf_krule_slist match_rules;
923 struct pf_krule *rule;
924 struct pfi_kkif *rkif;
925 counter_u64_t bytes[2];
926 counter_u64_t packets[2];
927 u_int32_t states;
928 u_int32_t conn;
929 struct pf_threshold conn_rate;
930 u_int32_t creation;
931 u_int32_t expire;
932 sa_family_t af;
933 sa_family_t naf;
934 u_int8_t ruletype;
935 pf_sn_types_t type;
936 struct mtx *lock;
937 };
938 #endif
939
940 struct pf_state_scrub {
941 struct timeval pfss_last; /* time received last packet */
942 u_int32_t pfss_tsecr; /* last echoed timestamp */
943 u_int32_t pfss_tsval; /* largest timestamp */
944 u_int32_t pfss_tsval0; /* original timestamp */
945 u_int16_t pfss_flags;
946 #define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */
947 #define PFSS_PAWS 0x0010 /* stricter PAWS checks */
948 #define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */
949 #define PFSS_DATA_TS 0x0040 /* timestamp on data packets */
950 #define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */
951 u_int8_t pfss_ttl; /* stashed TTL */
952 u_int8_t pad;
953 union {
954 u_int32_t pfss_ts_mod; /* timestamp modulation */
955 u_int32_t pfss_v_tag; /* SCTP verification tag */
956 };
957 };
958
959 struct pf_state_host {
960 struct pf_addr addr;
961 u_int16_t port;
962 u_int16_t pad;
963 };
964
965 struct pf_state_peer {
966 struct pf_state_scrub *scrub; /* state is scrubbed */
967 u_int32_t seqlo; /* Max sequence number sent */
968 u_int32_t seqhi; /* Max the other end ACKd + win */
969 u_int32_t seqdiff; /* Sequence number modulator */
970 u_int16_t max_win; /* largest window (pre scaling) */
971 u_int16_t mss; /* Maximum segment size option */
972 u_int8_t state; /* active state level */
973 u_int8_t wscale; /* window scaling factor */
974 u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */
975 u_int8_t pad[1];
976 };
977
978 /* Keep synced with struct pf_udp_endpoint. */
979 struct pf_udp_endpoint_cmp {
980 struct pf_addr addr;
981 uint16_t port;
982 sa_family_t af;
983 uint8_t pad[1];
984 };
985
986 struct pf_udp_endpoint {
987 struct pf_addr addr;
988 uint16_t port;
989 sa_family_t af;
990 uint8_t pad[1];
991
992 struct pf_udp_mapping *mapping;
993 LIST_ENTRY(pf_udp_endpoint) entry;
994 };
995
996 struct pf_udp_mapping {
997 struct pf_udp_endpoint endpoints[2];
998 u_int refs;
999 };
1000
1001 /* Keep synced with struct pf_state_key. */
1002 struct pf_state_key_cmp {
1003 struct pf_addr addr[2];
1004 u_int16_t port[2];
1005 sa_family_t af;
1006 u_int8_t proto;
1007 u_int8_t pad[2];
1008 };
1009
1010 struct pf_state_key {
1011 struct pf_addr addr[2];
1012 u_int16_t port[2];
1013 sa_family_t af;
1014 u_int8_t proto;
1015 u_int8_t pad[2];
1016
1017 LIST_ENTRY(pf_state_key) entry;
1018 TAILQ_HEAD(, pf_kstate) states[2];
1019 };
1020
1021 #define PF_REVERSED_KEY(state, family) \
1022 (((state)->key[PF_SK_WIRE]->af != (state)->key[PF_SK_STACK]->af) && \
1023 ((state)->key[PF_SK_WIRE]->af != (family)) && \
1024 ((state)->direction == PF_IN))
1025
1026 /* Keep synced with struct pf_kstate. */
1027 struct pf_state_cmp {
1028 u_int64_t id;
1029 u_int32_t creatorid;
1030 u_int8_t direction;
1031 u_int8_t pad[3];
1032 };
1033
1034 struct pf_state_scrub_export {
1035 uint16_t pfss_flags;
1036 uint8_t pfss_ttl; /* stashed TTL */
1037 #define PF_SCRUB_FLAG_VALID 0x01
1038 uint8_t scrub_flag;
1039 uint32_t pfss_ts_mod; /* timestamp modulation */
1040 };
1041
1042 struct pf_state_key_export {
1043 struct pf_addr addr[2];
1044 uint16_t port[2];
1045 };
1046
1047 struct pf_state_peer_export {
1048 struct pf_state_scrub_export scrub; /* state is scrubbed */
1049 uint32_t seqlo; /* Max sequence number sent */
1050 uint32_t seqhi; /* Max the other end ACKd + win */
1051 uint32_t seqdiff; /* Sequence number modulator */
1052 uint16_t max_win; /* largest window (pre scaling) */
1053 uint16_t mss; /* Maximum segment size option */
1054 uint8_t state; /* active state level */
1055 uint8_t wscale; /* window scaling factor */
1056 uint8_t dummy[6];
1057 };
1058 _Static_assert(sizeof(struct pf_state_peer_export) == 32, "size incorrect");
1059
1060 struct pf_state_export {
1061 uint64_t version;
1062 #define PF_STATE_VERSION 20230404
1063 uint64_t id;
1064 char ifname[IFNAMSIZ];
1065 char orig_ifname[IFNAMSIZ];
1066 struct pf_state_key_export key[2];
1067 struct pf_state_peer_export src;
1068 struct pf_state_peer_export dst;
1069 struct pf_addr rt_addr;
1070 uint32_t rule;
1071 uint32_t anchor;
1072 uint32_t nat_rule;
1073 uint32_t creation;
1074 uint32_t expire;
1075 uint32_t spare0;
1076 uint64_t packets[2];
1077 uint64_t bytes[2];
1078 uint32_t creatorid;
1079 uint32_t spare1;
1080 sa_family_t af;
1081 uint8_t proto;
1082 uint8_t direction;
1083 uint8_t log;
1084 uint8_t state_flags_compat;
1085 uint8_t timeout;
1086 uint8_t sync_flags;
1087 uint8_t updates;
1088 uint16_t state_flags;
1089 uint16_t qid;
1090 uint16_t pqid;
1091 uint16_t dnpipe;
1092 uint16_t dnrpipe;
1093 int32_t rtableid;
1094 uint8_t min_ttl;
1095 uint8_t set_tos;
1096 uint16_t max_mss;
1097 uint8_t set_prio[2];
1098 uint8_t rt;
1099 char rt_ifname[IFNAMSIZ];
1100
1101 uint8_t spare[72];
1102 };
1103 _Static_assert(sizeof(struct pf_state_export) == 384, "size incorrect");
1104
1105 #ifdef _KERNEL
1106 struct pf_kstate {
1107 /*
1108 * Area shared with pf_state_cmp
1109 */
1110 u_int64_t id;
1111 u_int32_t creatorid;
1112 u_int8_t direction;
1113 u_int8_t pad[3];
1114 /*
1115 * end of the area
1116 */
1117
1118 u_int16_t state_flags;
1119 u_int8_t timeout;
1120 u_int8_t sync_state; /* PFSYNC_S_x */
1121 u_int8_t sync_updates;
1122 u_int refs;
1123 struct mtx *lock;
1124 TAILQ_ENTRY(pf_kstate) sync_list;
1125 TAILQ_ENTRY(pf_kstate) key_list[2];
1126 LIST_ENTRY(pf_kstate) entry;
1127 struct pf_state_peer src;
1128 struct pf_state_peer dst;
1129 struct pf_krule_slist match_rules;
1130 struct pf_krule *rule;
1131 struct pf_krule *anchor;
1132 struct pf_krule *nat_rule;
1133 struct pf_state_key *key[2]; /* addresses stack and wire */
1134 struct pf_udp_mapping *udp_mapping;
1135 struct pfi_kkif *kif;
1136 struct pfi_kkif *orig_kif; /* The real kif, even if we're a floating state (i.e. if == V_pfi_all). */
1137 struct pf_ksrc_node *sns[PF_SN_MAX];/* source nodes */
1138 u_int64_t packets[2];
1139 u_int64_t bytes[2];
1140 u_int64_t creation;
1141 u_int64_t expire;
1142 u_int32_t pfsync_time;
1143 struct pf_rule_actions act;
1144 u_int16_t tag;
1145 u_int16_t if_index_in;
1146 u_int16_t if_index_out;
1147 };
1148
1149 /*
1150 * 6 cache lines per struct, 10 structs per page.
1151 * Try to not grow the struct beyond that.
1152 */
1153 _Static_assert(sizeof(struct pf_kstate) <= 384, "pf_kstate size crosses 384 bytes");
1154 #endif
1155
1156 /*
1157 * Unified state structures for pulling states out of the kernel
1158 * used by pfsync(4) and the pf(4) ioctl.
1159 */
1160 struct pfsync_state_scrub {
1161 u_int16_t pfss_flags;
1162 u_int8_t pfss_ttl; /* stashed TTL */
1163 #define PFSYNC_SCRUB_FLAG_VALID 0x01
1164 u_int8_t scrub_flag;
1165 u_int32_t pfss_ts_mod; /* timestamp modulation */
1166 } __packed;
1167
1168 struct pfsync_state_peer {
1169 struct pfsync_state_scrub scrub; /* state is scrubbed */
1170 u_int32_t seqlo; /* Max sequence number sent */
1171 u_int32_t seqhi; /* Max the other end ACKd + win */
1172 u_int32_t seqdiff; /* Sequence number modulator */
1173 u_int16_t max_win; /* largest window (pre scaling) */
1174 u_int16_t mss; /* Maximum segment size option */
1175 u_int8_t state; /* active state level */
1176 u_int8_t wscale; /* window scaling factor */
1177 u_int8_t pad[6];
1178 } __packed;
1179
1180 struct pfsync_state_key {
1181 struct pf_addr addr[2];
1182 u_int16_t port[2];
1183 };
1184
1185 struct pfsync_state_1301 {
1186 u_int64_t id;
1187 char ifname[IFNAMSIZ];
1188 struct pfsync_state_key key[2];
1189 struct pfsync_state_peer src;
1190 struct pfsync_state_peer dst;
1191 struct pf_addr rt_addr;
1192 u_int32_t rule;
1193 u_int32_t anchor;
1194 u_int32_t nat_rule;
1195 u_int32_t creation;
1196 u_int32_t expire;
1197 u_int32_t packets[2][2];
1198 u_int32_t bytes[2][2];
1199 u_int32_t creatorid;
1200 sa_family_t af;
1201 u_int8_t proto;
1202 u_int8_t direction;
1203 u_int8_t __spare[2];
1204 u_int8_t log;
1205 u_int8_t state_flags;
1206 u_int8_t timeout;
1207 u_int8_t sync_flags;
1208 u_int8_t updates;
1209 } __packed;
1210
1211 struct pfsync_state_1400 {
1212 /* The beginning of the struct is compatible with previous versions */
1213 u_int64_t id;
1214 char ifname[IFNAMSIZ];
1215 struct pfsync_state_key key[2];
1216 struct pfsync_state_peer src;
1217 struct pfsync_state_peer dst;
1218 struct pf_addr rt_addr;
1219 u_int32_t rule;
1220 u_int32_t anchor;
1221 u_int32_t nat_rule;
1222 u_int32_t creation;
1223 u_int32_t expire;
1224 u_int32_t packets[2][2];
1225 u_int32_t bytes[2][2];
1226 u_int32_t creatorid;
1227 sa_family_t af;
1228 u_int8_t proto;
1229 u_int8_t direction;
1230 u_int16_t state_flags;
1231 u_int8_t log;
1232 u_int8_t __spare;
1233 u_int8_t timeout;
1234 u_int8_t sync_flags;
1235 u_int8_t updates;
1236 /* The rest is not */
1237 u_int16_t qid;
1238 u_int16_t pqid;
1239 u_int16_t dnpipe;
1240 u_int16_t dnrpipe;
1241 int32_t rtableid;
1242 u_int8_t min_ttl;
1243 u_int8_t set_tos;
1244 u_int16_t max_mss;
1245 u_int8_t set_prio[2];
1246 u_int8_t rt;
1247 char rt_ifname[IFNAMSIZ];
1248
1249 } __packed;
1250
1251 union pfsync_state_union {
1252 struct pfsync_state_1301 pfs_1301;
1253 struct pfsync_state_1400 pfs_1400;
1254 } __packed;
1255
1256 #ifdef _KERNEL
1257 /* pfsync */
1258 typedef int pfsync_state_import_t(union pfsync_state_union *, int, int);
1259 typedef void pfsync_insert_state_t(struct pf_kstate *);
1260 typedef void pfsync_update_state_t(struct pf_kstate *);
1261 typedef void pfsync_delete_state_t(struct pf_kstate *);
1262 typedef void pfsync_clear_states_t(u_int32_t, const char *);
1263 typedef int pfsync_defer_t(struct pf_kstate *, struct mbuf *);
1264 typedef void pfsync_detach_ifnet_t(struct ifnet *);
1265 typedef void pflow_export_state_t(const struct pf_kstate *);
1266 typedef bool pf_addr_filter_func_t(const sa_family_t, const struct pf_addr *);
1267
1268 VNET_DECLARE(pfsync_state_import_t *, pfsync_state_import_ptr);
1269 #define V_pfsync_state_import_ptr VNET(pfsync_state_import_ptr)
1270 VNET_DECLARE(pfsync_insert_state_t *, pfsync_insert_state_ptr);
1271 #define V_pfsync_insert_state_ptr VNET(pfsync_insert_state_ptr)
1272 VNET_DECLARE(pfsync_update_state_t *, pfsync_update_state_ptr);
1273 #define V_pfsync_update_state_ptr VNET(pfsync_update_state_ptr)
1274 VNET_DECLARE(pfsync_delete_state_t *, pfsync_delete_state_ptr);
1275 #define V_pfsync_delete_state_ptr VNET(pfsync_delete_state_ptr)
1276 VNET_DECLARE(pfsync_clear_states_t *, pfsync_clear_states_ptr);
1277 #define V_pfsync_clear_states_ptr VNET(pfsync_clear_states_ptr)
1278 VNET_DECLARE(pfsync_defer_t *, pfsync_defer_ptr);
1279 #define V_pfsync_defer_ptr VNET(pfsync_defer_ptr)
1280 VNET_DECLARE(pflow_export_state_t *, pflow_export_state_ptr);
1281 #define V_pflow_export_state_ptr VNET(pflow_export_state_ptr)
1282 extern pfsync_detach_ifnet_t *pfsync_detach_ifnet_ptr;
1283
1284 void pfsync_state_export(union pfsync_state_union *,
1285 struct pf_kstate *, int);
1286 void pf_state_export(struct pf_state_export *,
1287 struct pf_kstate *);
1288
1289 /* pflog */
1290 struct pf_kruleset;
1291 struct pf_pdesc;
1292 typedef int pflog_packet_t(uint8_t, u_int8_t,
1293 struct pf_krule *, struct pf_krule *, struct pf_kruleset *,
1294 struct pf_pdesc *, int, struct pf_krule *);
1295 extern pflog_packet_t *pflog_packet_ptr;
1296
1297 #endif /* _KERNEL */
1298
1299 #define PFSYNC_FLAG_SRCNODE 0x04
1300 #define PFSYNC_FLAG_NATSRCNODE 0x08
1301
1302 /* for copies to/from network byte order */
1303 /* ioctl interface also uses network byte order */
1304 #define pf_state_peer_hton(s,d) do { \
1305 (d)->seqlo = htonl((s)->seqlo); \
1306 (d)->seqhi = htonl((s)->seqhi); \
1307 (d)->seqdiff = htonl((s)->seqdiff); \
1308 (d)->max_win = htons((s)->max_win); \
1309 (d)->mss = htons((s)->mss); \
1310 (d)->state = (s)->state; \
1311 (d)->wscale = (s)->wscale; \
1312 if ((s)->scrub) { \
1313 (d)->scrub.pfss_flags = \
1314 htons((s)->scrub->pfss_flags & PFSS_TIMESTAMP); \
1315 (d)->scrub.pfss_ttl = (s)->scrub->pfss_ttl; \
1316 (d)->scrub.pfss_ts_mod = htonl((s)->scrub->pfss_ts_mod);\
1317 (d)->scrub.scrub_flag = PFSYNC_SCRUB_FLAG_VALID; \
1318 } \
1319 } while (0)
1320
1321 #define pf_state_peer_ntoh(s,d) do { \
1322 (d)->seqlo = ntohl((s)->seqlo); \
1323 (d)->seqhi = ntohl((s)->seqhi); \
1324 (d)->seqdiff = ntohl((s)->seqdiff); \
1325 (d)->max_win = ntohs((s)->max_win); \
1326 (d)->mss = ntohs((s)->mss); \
1327 (d)->state = (s)->state; \
1328 (d)->wscale = (s)->wscale; \
1329 if ((s)->scrub.scrub_flag == PFSYNC_SCRUB_FLAG_VALID && \
1330 (d)->scrub != NULL) { \
1331 (d)->scrub->pfss_flags = \
1332 ntohs((s)->scrub.pfss_flags) & PFSS_TIMESTAMP; \
1333 (d)->scrub->pfss_ttl = (s)->scrub.pfss_ttl; \
1334 (d)->scrub->pfss_ts_mod = ntohl((s)->scrub.pfss_ts_mod);\
1335 } \
1336 } while (0)
1337
1338 #define pf_state_counter_hton(s,d) do { \
1339 d[0] = htonl((s>>32)&0xffffffff); \
1340 d[1] = htonl(s&0xffffffff); \
1341 } while (0)
1342
1343 #define pf_state_counter_from_pfsync(s) \
1344 (((u_int64_t)(s[0])<<32) | (u_int64_t)(s[1]))
1345
1346 #define pf_state_counter_ntoh(s,d) do { \
1347 d = ntohl(s[0]); \
1348 d = d<<32; \
1349 d += ntohl(s[1]); \
1350 } while (0)
1351
1352 TAILQ_HEAD(pf_krulequeue, pf_krule);
1353
1354 struct pf_kanchor;
1355
1356 struct pf_kruleset {
1357 struct {
1358 struct pf_krulequeue queues[2];
1359 struct {
1360 struct pf_krulequeue *ptr;
1361 struct pf_krule **ptr_array;
1362 u_int32_t rcount;
1363 u_int32_t ticket;
1364 int open;
1365 struct pf_krule_global *tree;
1366 } active, inactive;
1367 } rules[PF_RULESET_MAX];
1368 struct pf_kanchor *anchor;
1369 u_int32_t tticket;
1370 int tables;
1371 int topen;
1372 };
1373
1374 RB_HEAD(pf_kanchor_global, pf_kanchor);
1375 RB_HEAD(pf_kanchor_node, pf_kanchor);
1376 struct pf_kanchor {
1377 RB_ENTRY(pf_kanchor) entry_global;
1378 RB_ENTRY(pf_kanchor) entry_node;
1379 struct pf_kanchor *parent;
1380 struct pf_kanchor_node children;
1381 char name[PF_ANCHOR_NAME_SIZE];
1382 char path[MAXPATHLEN];
1383 struct pf_kruleset ruleset;
1384 int refcnt; /* anchor rules */
1385 };
1386 RB_PROTOTYPE(pf_kanchor_global, pf_kanchor, entry_global, pf_anchor_compare);
1387 RB_PROTOTYPE(pf_kanchor_node, pf_kanchor, entry_node, pf_kanchor_compare);
1388
1389 #define PF_RESERVED_ANCHOR "_pf"
1390
1391 #define PFR_TFLAG_PERSIST 0x00000001
1392 #define PFR_TFLAG_CONST 0x00000002
1393 #define PFR_TFLAG_ACTIVE 0x00000004
1394 #define PFR_TFLAG_INACTIVE 0x00000008
1395 #define PFR_TFLAG_REFERENCED 0x00000010
1396 #define PFR_TFLAG_REFDANCHOR 0x00000020
1397 #define PFR_TFLAG_COUNTERS 0x00000040
1398 /* Adjust masks below when adding flags. */
1399 #define PFR_TFLAG_USRMASK (PFR_TFLAG_PERSIST | \
1400 PFR_TFLAG_CONST | \
1401 PFR_TFLAG_COUNTERS)
1402 #define PFR_TFLAG_SETMASK (PFR_TFLAG_ACTIVE | \
1403 PFR_TFLAG_INACTIVE | \
1404 PFR_TFLAG_REFERENCED | \
1405 PFR_TFLAG_REFDANCHOR)
1406 #define PFR_TFLAG_ALLMASK (PFR_TFLAG_PERSIST | \
1407 PFR_TFLAG_CONST | \
1408 PFR_TFLAG_ACTIVE | \
1409 PFR_TFLAG_INACTIVE | \
1410 PFR_TFLAG_REFERENCED | \
1411 PFR_TFLAG_REFDANCHOR | \
1412 PFR_TFLAG_COUNTERS)
1413
1414 struct pf_kanchor_stackframe;
1415 struct pf_keth_anchor_stackframe;
1416
1417 struct pfr_table {
1418 char pfrt_anchor[MAXPATHLEN];
1419 char pfrt_name[PF_TABLE_NAME_SIZE];
1420 u_int32_t pfrt_flags;
1421 u_int8_t pfrt_fback;
1422 };
1423
1424 enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED,
1425 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE,
1426 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_NOCOUNT, PFR_FB_MAX };
1427
1428 struct pfr_addr {
1429 union {
1430 struct in_addr _pfra_ip4addr;
1431 struct in6_addr _pfra_ip6addr;
1432 } pfra_u;
1433 u_int8_t pfra_af;
1434 u_int8_t pfra_net;
1435 u_int8_t pfra_not;
1436 u_int8_t pfra_fback;
1437 };
1438 #define pfra_ip4addr pfra_u._pfra_ip4addr
1439 #define pfra_ip6addr pfra_u._pfra_ip6addr
1440
1441 enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX };
1442 enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX };
1443 enum { PFR_TYPE_PACKETS, PFR_TYPE_BYTES, PFR_TYPE_MAX };
1444 #define PFR_NUM_COUNTERS (PFR_DIR_MAX * PFR_OP_ADDR_MAX * PFR_TYPE_MAX)
1445 #define PFR_OP_XPASS PFR_OP_ADDR_MAX
1446
1447 struct pfr_astats {
1448 struct pfr_addr pfras_a;
1449 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
1450 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
1451 time_t pfras_tzero;
1452 };
1453
1454 enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX };
1455
1456 struct pfr_tstats {
1457 struct pfr_table pfrts_t;
1458 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
1459 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
1460 u_int64_t pfrts_match;
1461 u_int64_t pfrts_nomatch;
1462 time_t pfrts_tzero;
1463 int pfrts_cnt;
1464 int pfrts_refcnt[PFR_REFCNT_MAX];
1465 };
1466
1467 #ifdef _KERNEL
1468
1469 struct pfr_kstate_counter {
1470 counter_u64_t pkc_pcpu;
1471 u_int64_t pkc_zero;
1472 };
1473
1474 static inline int
pfr_kstate_counter_init(struct pfr_kstate_counter * pfrc,int flags)1475 pfr_kstate_counter_init(struct pfr_kstate_counter *pfrc, int flags)
1476 {
1477
1478 pfrc->pkc_zero = 0;
1479 pfrc->pkc_pcpu = counter_u64_alloc(flags);
1480 if (pfrc->pkc_pcpu == NULL)
1481 return (ENOMEM);
1482 return (0);
1483 }
1484
1485 static inline void
pfr_kstate_counter_deinit(struct pfr_kstate_counter * pfrc)1486 pfr_kstate_counter_deinit(struct pfr_kstate_counter *pfrc)
1487 {
1488
1489 counter_u64_free(pfrc->pkc_pcpu);
1490 }
1491
1492 static inline u_int64_t
pfr_kstate_counter_fetch(struct pfr_kstate_counter * pfrc)1493 pfr_kstate_counter_fetch(struct pfr_kstate_counter *pfrc)
1494 {
1495 u_int64_t c;
1496
1497 c = counter_u64_fetch(pfrc->pkc_pcpu);
1498 c -= pfrc->pkc_zero;
1499 return (c);
1500 }
1501
1502 static inline void
pfr_kstate_counter_zero(struct pfr_kstate_counter * pfrc)1503 pfr_kstate_counter_zero(struct pfr_kstate_counter *pfrc)
1504 {
1505 u_int64_t c;
1506
1507 c = counter_u64_fetch(pfrc->pkc_pcpu);
1508 pfrc->pkc_zero = c;
1509 }
1510
1511 static inline void
pfr_kstate_counter_add(struct pfr_kstate_counter * pfrc,int64_t n)1512 pfr_kstate_counter_add(struct pfr_kstate_counter *pfrc, int64_t n)
1513 {
1514
1515 counter_u64_add(pfrc->pkc_pcpu, n);
1516 }
1517
1518 struct pfr_ktstats {
1519 struct pfr_table pfrts_t;
1520 struct pfr_kstate_counter pfrkts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
1521 struct pfr_kstate_counter pfrkts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
1522 struct pfr_kstate_counter pfrkts_match;
1523 struct pfr_kstate_counter pfrkts_nomatch;
1524 time_t pfrkts_tzero;
1525 int pfrkts_cnt;
1526 int pfrkts_refcnt[PFR_REFCNT_MAX];
1527 };
1528
1529 #endif /* _KERNEL */
1530
1531 #define pfrts_name pfrts_t.pfrt_name
1532 #define pfrts_flags pfrts_t.pfrt_flags
1533
1534 #ifndef _SOCKADDR_UNION_DEFINED
1535 #define _SOCKADDR_UNION_DEFINED
1536 union sockaddr_union {
1537 struct sockaddr sa;
1538 struct sockaddr_in sin;
1539 struct sockaddr_in6 sin6;
1540 };
1541 #endif /* _SOCKADDR_UNION_DEFINED */
1542
1543 struct pfr_kcounters {
1544 counter_u64_t pfrkc_counters;
1545 time_t pfrkc_tzero;
1546 };
1547 #define pfr_kentry_counter(kc, dir, op, t) \
1548 ((kc)->pfrkc_counters + \
1549 (dir) * PFR_OP_ADDR_MAX * PFR_TYPE_MAX + (op) * PFR_TYPE_MAX + (t))
1550
1551 #ifdef _KERNEL
1552 SLIST_HEAD(pfr_kentryworkq, pfr_kentry);
1553 struct pfr_kentry {
1554 struct radix_node pfrke_node[2];
1555 union sockaddr_union pfrke_sa;
1556 SLIST_ENTRY(pfr_kentry) pfrke_workq;
1557 struct pfr_kcounters pfrke_counters;
1558 u_int8_t pfrke_af;
1559 u_int8_t pfrke_net;
1560 u_int8_t pfrke_not;
1561 u_int8_t pfrke_mark;
1562 };
1563
1564 SLIST_HEAD(pfr_ktableworkq, pfr_ktable);
1565 RB_HEAD(pfr_ktablehead, pfr_ktable);
1566 struct pfr_ktable {
1567 struct pfr_ktstats pfrkt_kts;
1568 RB_ENTRY(pfr_ktable) pfrkt_tree;
1569 SLIST_ENTRY(pfr_ktable) pfrkt_workq;
1570 struct radix_node_head *pfrkt_ip4;
1571 struct radix_node_head *pfrkt_ip6;
1572 struct pfr_ktable *pfrkt_shadow;
1573 struct pfr_ktable *pfrkt_root;
1574 struct pf_kruleset *pfrkt_rs;
1575 long pfrkt_larg;
1576 int pfrkt_nflags;
1577 };
1578 #define pfrkt_t pfrkt_kts.pfrts_t
1579 #define pfrkt_name pfrkt_t.pfrt_name
1580 #define pfrkt_anchor pfrkt_t.pfrt_anchor
1581 #define pfrkt_ruleset pfrkt_t.pfrt_ruleset
1582 #define pfrkt_flags pfrkt_t.pfrt_flags
1583 #define pfrkt_cnt pfrkt_kts.pfrkts_cnt
1584 #define pfrkt_refcnt pfrkt_kts.pfrkts_refcnt
1585 #define pfrkt_packets pfrkt_kts.pfrkts_packets
1586 #define pfrkt_bytes pfrkt_kts.pfrkts_bytes
1587 #define pfrkt_match pfrkt_kts.pfrkts_match
1588 #define pfrkt_nomatch pfrkt_kts.pfrkts_nomatch
1589 #define pfrkt_tzero pfrkt_kts.pfrkts_tzero
1590 #endif
1591
1592 #ifdef _KERNEL
1593 struct pfi_kkif {
1594 char pfik_name[IFNAMSIZ];
1595 union {
1596 RB_ENTRY(pfi_kkif) _pfik_tree;
1597 LIST_ENTRY(pfi_kkif) _pfik_list;
1598 } _pfik_glue;
1599 #define pfik_tree _pfik_glue._pfik_tree
1600 #define pfik_list _pfik_glue._pfik_list
1601 struct pf_counter_u64 pfik_packets[2][2][2];
1602 struct pf_counter_u64 pfik_bytes[2][2][2];
1603 time_t pfik_tzero;
1604 u_int pfik_flags;
1605 struct ifnet *pfik_ifp;
1606 struct ifg_group *pfik_group;
1607 u_int pfik_rulerefs;
1608 TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs;
1609 #ifdef PF_WANT_32_TO_64_COUNTER
1610 LIST_ENTRY(pfi_kkif) pfik_allkiflist;
1611 #endif
1612 };
1613 #endif
1614
1615 #define PFI_IFLAG_REFS 0x0001 /* has state references */
1616 #define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */
1617 #define PFI_IFLAG_ANY 0x0200 /* match any non-loopback interface */
1618
1619 #ifdef _KERNEL
1620 struct pf_sctp_multihome_job;
1621 TAILQ_HEAD(pf_sctp_multihome_jobs, pf_sctp_multihome_job);
1622
1623 struct pf_pdesc {
1624 struct {
1625 int done;
1626 uid_t uid;
1627 gid_t gid;
1628 } lookup;
1629 u_int64_t tot_len; /* Make Mickey money */
1630 union pf_headers {
1631 struct tcphdr tcp;
1632 struct udphdr udp;
1633 struct sctphdr sctp;
1634 struct icmp icmp;
1635 #ifdef INET6
1636 struct icmp6_hdr icmp6;
1637 #endif /* INET6 */
1638 char any[0];
1639 } hdr;
1640
1641 struct pf_addr nsaddr; /* src address after NAT */
1642 struct pf_addr ndaddr; /* dst address after NAT */
1643
1644 struct pfi_kkif *kif; /* incomming interface */
1645 struct mbuf *m;
1646
1647 struct pf_addr *src; /* src address */
1648 struct pf_addr *dst; /* dst address */
1649 struct pf_addr osrc;
1650 struct pf_addr odst;
1651 u_int16_t *pcksum; /* proto cksum */
1652 u_int16_t *sport;
1653 u_int16_t *dport;
1654 u_int16_t osport;
1655 u_int16_t odport;
1656 u_int16_t nsport; /* src port after NAT */
1657 u_int16_t ndport; /* dst port after NAT */
1658 struct pf_mtag *pf_mtag;
1659 struct pf_rule_actions act;
1660
1661 u_int32_t off; /* protocol header offset */
1662 bool df; /* IPv4 Don't fragment flag. */
1663 u_int32_t hdrlen; /* protocol header length */
1664 u_int32_t p_len; /* total length of protocol payload */
1665 u_int32_t extoff; /* extentsion header offset */
1666 u_int32_t fragoff; /* fragment header offset */
1667 u_int32_t jumbolen; /* length from v6 jumbo header */
1668 u_int32_t badopts; /* v4 options or v6 routing headers */
1669
1670 u_int16_t *ip_sum;
1671 u_int16_t flags; /* Let SCRUB trigger behavior in
1672 * state code. Easier than tags */
1673 #define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */
1674 u_int16_t virtual_proto;
1675 #define PF_VPROTO_FRAGMENT 256
1676 sa_family_t af;
1677 sa_family_t naf;
1678 u_int8_t proto;
1679 u_int8_t tos;
1680 u_int8_t ttl;
1681 u_int8_t dir; /* direction */
1682 u_int8_t sidx; /* key index for source */
1683 u_int8_t didx; /* key index for destination */
1684 #define PFDESC_SCTP_INIT 0x0001
1685 #define PFDESC_SCTP_INIT_ACK 0x0002
1686 #define PFDESC_SCTP_COOKIE 0x0004
1687 #define PFDESC_SCTP_COOKIE_ACK 0x0008
1688 #define PFDESC_SCTP_ABORT 0x0010
1689 #define PFDESC_SCTP_SHUTDOWN 0x0020
1690 #define PFDESC_SCTP_SHUTDOWN_COMPLETE 0x0040
1691 #define PFDESC_SCTP_DATA 0x0080
1692 #define PFDESC_SCTP_ASCONF 0x0100
1693 #define PFDESC_SCTP_HEARTBEAT 0x0200
1694 #define PFDESC_SCTP_HEARTBEAT_ACK 0x0400
1695 #define PFDESC_SCTP_OTHER 0x0800
1696 #define PFDESC_SCTP_ADD_IP 0x1000
1697 u_int16_t sctp_flags;
1698 u_int32_t sctp_initiate_tag;
1699 u_int16_t sctp_dummy_sum;
1700 struct pf_krule *related_rule;
1701
1702 struct pf_sctp_multihome_jobs sctp_multihome_jobs;
1703 };
1704
1705 struct pf_sctp_multihome_job {
1706 TAILQ_ENTRY(pf_sctp_multihome_job) next;
1707 struct pf_pdesc pd;
1708 struct pf_addr src;
1709 struct pf_addr dst;
1710 int op;
1711 };
1712
1713 #endif
1714
1715 /* flags for RDR options */
1716 #define PF_DPORT_RANGE 0x01 /* Dest port uses range */
1717 #define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */
1718
1719 /* UDP state enumeration */
1720 #define PFUDPS_NO_TRAFFIC 0
1721 #define PFUDPS_SINGLE 1
1722 #define PFUDPS_MULTIPLE 2
1723
1724 #define PFUDPS_NSTATES 3 /* number of state levels */
1725
1726 #define PFUDPS_NAMES { \
1727 "NO_TRAFFIC", \
1728 "SINGLE", \
1729 "MULTIPLE", \
1730 NULL \
1731 }
1732
1733 /* Other protocol state enumeration */
1734 #define PFOTHERS_NO_TRAFFIC 0
1735 #define PFOTHERS_SINGLE 1
1736 #define PFOTHERS_MULTIPLE 2
1737
1738 #define PFOTHERS_NSTATES 3 /* number of state levels */
1739
1740 #define PFOTHERS_NAMES { \
1741 "NO_TRAFFIC", \
1742 "SINGLE", \
1743 "MULTIPLE", \
1744 NULL \
1745 }
1746
1747 #define ACTION_SET(a, x) \
1748 do { \
1749 if ((a) != NULL) \
1750 *(a) = (x); \
1751 } while (0)
1752
1753 #define REASON_SET(a, x) \
1754 do { \
1755 SDT_PROBE2(pf, , test, reason_set, x, __LINE__); \
1756 if ((a) != NULL) \
1757 *(a) = (x); \
1758 if (x < PFRES_MAX) \
1759 counter_u64_add(V_pf_status.counters[x], 1); \
1760 } while (0)
1761
1762 enum pf_syncookies_mode {
1763 PF_SYNCOOKIES_NEVER = 0,
1764 PF_SYNCOOKIES_ALWAYS = 1,
1765 PF_SYNCOOKIES_ADAPTIVE = 2,
1766 PF_SYNCOOKIES_MODE_MAX = PF_SYNCOOKIES_ADAPTIVE
1767 };
1768
1769 #define PF_SYNCOOKIES_HIWATPCT 25
1770 #define PF_SYNCOOKIES_LOWATPCT (PF_SYNCOOKIES_HIWATPCT / 2)
1771
1772 #ifdef _KERNEL
1773 struct pf_kstatus {
1774 counter_u64_t counters[PFRES_MAX]; /* reason for passing/dropping */
1775 counter_u64_t lcounters[KLCNT_MAX]; /* limit counters */
1776 struct pf_counter_u64 fcounters[FCNT_MAX]; /* state operation counters */
1777 counter_u64_t scounters[SCNT_MAX]; /* src_node operation counters */
1778 uint32_t states;
1779 uint32_t src_nodes;
1780 uint32_t running;
1781 uint32_t since;
1782 uint32_t debug;
1783 uint32_t hostid;
1784 char ifname[IFNAMSIZ];
1785 uint8_t pf_chksum[PF_MD5_DIGEST_LENGTH];
1786 bool keep_counters;
1787 enum pf_syncookies_mode syncookies_mode;
1788 bool syncookies_active;
1789 uint64_t syncookies_inflight[2];
1790 uint32_t states_halfopen;
1791 uint32_t reass;
1792 };
1793 #endif
1794
1795 struct pf_divert {
1796 union {
1797 struct in_addr ipv4;
1798 struct in6_addr ipv6;
1799 } addr;
1800 u_int16_t port;
1801 };
1802
1803 #define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */
1804 #define PFR_KENTRY_HIWAT 200000 /* Number of table entries */
1805
1806 struct pf_fragment_tag {
1807 uint16_t ft_hdrlen; /* header length of reassembled pkt */
1808 uint16_t ft_extoff; /* last extension header offset or 0 */
1809 uint16_t ft_maxlen; /* maximum fragment payload length */
1810 uint32_t ft_id; /* fragment id */
1811 };
1812
1813 /*
1814 * Limit the length of the fragment queue traversal. Remember
1815 * search entry points based on the fragment offset.
1816 */
1817 #define PF_FRAG_ENTRY_POINTS 16
1818
1819 /*
1820 * The number of entries in the fragment queue must be limited
1821 * to avoid DoS by linear searching. Instead of a global limit,
1822 * use a limit per entry point. For large packets these sum up.
1823 */
1824 #define PF_FRAG_ENTRY_LIMIT 64
1825
1826 /*
1827 * ioctl parameter structures
1828 */
1829
1830 struct pfioc_pooladdr {
1831 u_int32_t action;
1832 u_int32_t ticket;
1833 u_int32_t nr;
1834 u_int32_t r_num;
1835 u_int8_t r_action;
1836 u_int8_t r_last;
1837 u_int8_t af;
1838 char anchor[MAXPATHLEN];
1839 struct pf_pooladdr addr;
1840 };
1841
1842 struct pfioc_rule {
1843 u_int32_t action;
1844 u_int32_t ticket;
1845 u_int32_t pool_ticket;
1846 u_int32_t nr;
1847 char anchor[MAXPATHLEN];
1848 char anchor_call[MAXPATHLEN];
1849 struct pf_rule rule;
1850 };
1851
1852 struct pfioc_natlook {
1853 struct pf_addr saddr;
1854 struct pf_addr daddr;
1855 struct pf_addr rsaddr;
1856 struct pf_addr rdaddr;
1857 u_int16_t sport;
1858 u_int16_t dport;
1859 u_int16_t rsport;
1860 u_int16_t rdport;
1861 sa_family_t af;
1862 u_int8_t proto;
1863 u_int8_t direction;
1864 };
1865
1866 struct pfioc_state {
1867 struct pfsync_state_1301 state;
1868 };
1869
1870 struct pfioc_src_node_kill {
1871 sa_family_t psnk_af;
1872 struct pf_rule_addr psnk_src;
1873 struct pf_rule_addr psnk_dst;
1874 u_int psnk_killed;
1875 };
1876
1877 #ifdef _KERNEL
1878 struct pf_kstate_kill {
1879 struct pf_state_cmp psk_pfcmp;
1880 sa_family_t psk_af;
1881 int psk_proto;
1882 struct pf_rule_addr psk_src;
1883 struct pf_rule_addr psk_dst;
1884 struct pf_rule_addr psk_rt_addr;
1885 char psk_ifname[IFNAMSIZ];
1886 char psk_label[PF_RULE_LABEL_SIZE];
1887 u_int psk_killed;
1888 bool psk_kill_match;
1889 bool psk_nat;
1890 };
1891 #endif
1892
1893 struct pfioc_state_kill {
1894 struct pf_state_cmp psk_pfcmp;
1895 sa_family_t psk_af;
1896 int psk_proto;
1897 struct pf_rule_addr psk_src;
1898 struct pf_rule_addr psk_dst;
1899 char psk_ifname[IFNAMSIZ];
1900 char psk_label[PF_RULE_LABEL_SIZE];
1901 u_int psk_killed;
1902 };
1903
1904 struct pfioc_states {
1905 int ps_len;
1906 union {
1907 void *ps_buf;
1908 struct pfsync_state_1301 *ps_states;
1909 };
1910 };
1911
1912 struct pfioc_states_v2 {
1913 int ps_len;
1914 uint64_t ps_req_version;
1915 union {
1916 void *ps_buf;
1917 struct pf_state_export *ps_states;
1918 };
1919 };
1920
1921 struct pfioc_src_nodes {
1922 int psn_len;
1923 union {
1924 void *psn_buf;
1925 struct pf_src_node *psn_src_nodes;
1926 };
1927 };
1928
1929 struct pfioc_if {
1930 char ifname[IFNAMSIZ];
1931 };
1932
1933 struct pfioc_tm {
1934 int timeout;
1935 int seconds;
1936 };
1937
1938 struct pfioc_limit {
1939 int index;
1940 unsigned limit;
1941 };
1942
1943 struct pfioc_altq_v0 {
1944 u_int32_t action;
1945 u_int32_t ticket;
1946 u_int32_t nr;
1947 struct pf_altq_v0 altq;
1948 };
1949
1950 struct pfioc_altq_v1 {
1951 u_int32_t action;
1952 u_int32_t ticket;
1953 u_int32_t nr;
1954 /*
1955 * Placed here so code that only uses the above parameters can be
1956 * written entirely in terms of the v0 or v1 type.
1957 */
1958 u_int32_t version;
1959 struct pf_altq_v1 altq;
1960 };
1961
1962 /*
1963 * Latest version of struct pfioc_altq_vX. This must move in lock-step with
1964 * the latest version of struct pf_altq_vX as it has that struct as a
1965 * member.
1966 */
1967 #define PFIOC_ALTQ_VERSION PF_ALTQ_VERSION
1968
1969 struct pfioc_qstats_v0 {
1970 u_int32_t ticket;
1971 u_int32_t nr;
1972 void *buf;
1973 int nbytes;
1974 u_int8_t scheduler;
1975 };
1976
1977 struct pfioc_qstats_v1 {
1978 u_int32_t ticket;
1979 u_int32_t nr;
1980 void *buf;
1981 int nbytes;
1982 u_int8_t scheduler;
1983 /*
1984 * Placed here so code that only uses the above parameters can be
1985 * written entirely in terms of the v0 or v1 type.
1986 */
1987 u_int32_t version; /* Requested version of stats struct */
1988 };
1989
1990 /* Latest version of struct pfioc_qstats_vX */
1991 #define PFIOC_QSTATS_VERSION 1
1992
1993 struct pfioc_ruleset {
1994 u_int32_t nr;
1995 char path[MAXPATHLEN];
1996 char name[PF_ANCHOR_NAME_SIZE];
1997 };
1998
1999 #define PF_RULESET_ALTQ (PF_RULESET_MAX)
2000 #define PF_RULESET_TABLE (PF_RULESET_MAX+1)
2001 #define PF_RULESET_ETH (PF_RULESET_MAX+2)
2002 struct pfioc_trans {
2003 int size; /* number of elements */
2004 int esize; /* size of each element in bytes */
2005 struct pfioc_trans_e {
2006 int rs_num;
2007 char anchor[MAXPATHLEN];
2008 u_int32_t ticket;
2009 } *array;
2010 };
2011
2012 #define PFR_FLAG_ATOMIC 0x00000001 /* unused */
2013 #define PFR_FLAG_DUMMY 0x00000002
2014 #define PFR_FLAG_FEEDBACK 0x00000004
2015 #define PFR_FLAG_CLSTATS 0x00000008
2016 #define PFR_FLAG_ADDRSTOO 0x00000010
2017 #define PFR_FLAG_REPLACE 0x00000020
2018 #define PFR_FLAG_ALLRSETS 0x00000040
2019 #define PFR_FLAG_ALLMASK 0x0000007F
2020 #ifdef _KERNEL
2021 #define PFR_FLAG_USERIOCTL 0x10000000
2022 #endif
2023
2024 struct pfioc_table {
2025 struct pfr_table pfrio_table;
2026 void *pfrio_buffer;
2027 int pfrio_esize;
2028 int pfrio_size;
2029 int pfrio_size2;
2030 int pfrio_nadd;
2031 int pfrio_ndel;
2032 int pfrio_nchange;
2033 int pfrio_flags;
2034 u_int32_t pfrio_ticket;
2035 };
2036 #define pfrio_exists pfrio_nadd
2037 #define pfrio_nzero pfrio_nadd
2038 #define pfrio_nmatch pfrio_nadd
2039 #define pfrio_naddr pfrio_size2
2040 #define pfrio_setflag pfrio_size2
2041 #define pfrio_clrflag pfrio_nadd
2042
2043 struct pfioc_iface {
2044 char pfiio_name[IFNAMSIZ];
2045 void *pfiio_buffer;
2046 int pfiio_esize;
2047 int pfiio_size;
2048 int pfiio_nzero;
2049 int pfiio_flags;
2050 };
2051
2052 /*
2053 * ioctl operations
2054 */
2055
2056 #define DIOCSTART _IO ('D', 1)
2057 #define DIOCSTOP _IO ('D', 2)
2058 #define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule)
2059 #define DIOCADDRULENV _IOWR('D', 4, struct pfioc_nv)
2060 #define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule)
2061 #define DIOCGETRULENV _IOWR('D', 7, struct pfioc_nv)
2062 /* XXX cut 8 - 17 */
2063 #define DIOCCLRSTATESNV _IOWR('D', 18, struct pfioc_nv)
2064 #define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state)
2065 #define DIOCGETSTATENV _IOWR('D', 19, struct pfioc_nv)
2066 #define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if)
2067 #define DIOCGETSTATUSNV _IOWR('D', 21, struct pfioc_nv)
2068 #define DIOCCLRSTATUS _IO ('D', 22)
2069 #define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook)
2070 #define DIOCSETDEBUG _IOWR('D', 24, u_int32_t)
2071 #ifdef COMPAT_FREEBSD14
2072 #define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states)
2073 #endif
2074 #define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule)
2075 /* XXX cut 26 - 28 */
2076 #define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm)
2077 #define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm)
2078 #define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state)
2079 #define DIOCCLRRULECTRS _IO ('D', 38)
2080 #define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit)
2081 #define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit)
2082 #define DIOCKILLSTATESNV _IOWR('D', 41, struct pfioc_nv)
2083 #define DIOCSTARTALTQ _IO ('D', 42)
2084 #define DIOCSTOPALTQ _IO ('D', 43)
2085 #define DIOCADDALTQV0 _IOWR('D', 45, struct pfioc_altq_v0)
2086 #define DIOCADDALTQV1 _IOWR('D', 45, struct pfioc_altq_v1)
2087 #define DIOCGETALTQSV0 _IOWR('D', 47, struct pfioc_altq_v0)
2088 #define DIOCGETALTQSV1 _IOWR('D', 47, struct pfioc_altq_v1)
2089 #define DIOCGETALTQV0 _IOWR('D', 48, struct pfioc_altq_v0)
2090 #define DIOCGETALTQV1 _IOWR('D', 48, struct pfioc_altq_v1)
2091 #define DIOCCHANGEALTQV0 _IOWR('D', 49, struct pfioc_altq_v0)
2092 #define DIOCCHANGEALTQV1 _IOWR('D', 49, struct pfioc_altq_v1)
2093 #define DIOCGETQSTATSV0 _IOWR('D', 50, struct pfioc_qstats_v0)
2094 #define DIOCGETQSTATSV1 _IOWR('D', 50, struct pfioc_qstats_v1)
2095 #define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr)
2096 #define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr)
2097 #define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr)
2098 #define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr)
2099 #define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr)
2100 /* XXX cut 55 - 57 */
2101 #define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset)
2102 #define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset)
2103 #define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table)
2104 #define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table)
2105 #define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table)
2106 #define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table)
2107 #define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table)
2108 #define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table)
2109 #define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table)
2110 #define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table)
2111 #define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table)
2112 #define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table)
2113 #define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table)
2114 #define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table)
2115 #define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table)
2116 #define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table)
2117 #define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table)
2118 #define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table)
2119 #define DIOCOSFPFLUSH _IO('D', 78)
2120 #define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl)
2121 #define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl)
2122 #define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans)
2123 #define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans)
2124 #define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans)
2125 #define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes)
2126 #define DIOCCLRSRCNODES _IO('D', 85)
2127 #define DIOCSETHOSTID _IOWR('D', 86, u_int32_t)
2128 #define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface)
2129 #define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface)
2130 #define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface)
2131 #define DIOCKILLSRCNODES _IOWR('D', 91, struct pfioc_src_node_kill)
2132 #define DIOCGIFSPEEDV0 _IOWR('D', 92, struct pf_ifspeed_v0)
2133 #define DIOCGIFSPEEDV1 _IOWR('D', 92, struct pf_ifspeed_v1)
2134 #ifdef COMPAT_FREEBSD14
2135 #define DIOCGETSTATESV2 _IOWR('D', 93, struct pfioc_states_v2)
2136 #endif
2137 #define DIOCGETSYNCOOKIES _IOWR('D', 94, struct pfioc_nv)
2138 #define DIOCSETSYNCOOKIES _IOWR('D', 95, struct pfioc_nv)
2139 #define DIOCKEEPCOUNTERS _IOWR('D', 96, struct pfioc_nv)
2140 #define DIOCKEEPCOUNTERS_FREEBSD13 _IOWR('D', 92, struct pfioc_nv)
2141 #define DIOCADDETHRULE _IOWR('D', 97, struct pfioc_nv)
2142 #define DIOCGETETHRULE _IOWR('D', 98, struct pfioc_nv)
2143 #define DIOCGETETHRULES _IOWR('D', 99, struct pfioc_nv)
2144 #define DIOCGETETHRULESETS _IOWR('D', 100, struct pfioc_nv)
2145 #define DIOCGETETHRULESET _IOWR('D', 101, struct pfioc_nv)
2146 #define DIOCSETREASS _IOWR('D', 102, u_int32_t)
2147
2148 struct pf_ifspeed_v0 {
2149 char ifname[IFNAMSIZ];
2150 u_int32_t baudrate;
2151 };
2152
2153 struct pf_ifspeed_v1 {
2154 char ifname[IFNAMSIZ];
2155 u_int32_t baudrate32;
2156 /* layout identical to struct pf_ifspeed_v0 up to this point */
2157 u_int64_t baudrate;
2158 };
2159
2160 /* Latest version of struct pf_ifspeed_vX */
2161 #define PF_IFSPEED_VERSION 1
2162
2163 /*
2164 * Compatibility and convenience macros
2165 */
2166 #ifndef _KERNEL
2167 #ifdef PFIOC_USE_LATEST
2168 /*
2169 * Maintaining in-tree consumers of the ioctl interface is easier when that
2170 * code can be written in terms old names that refer to the latest interface
2171 * version as that reduces the required changes in the consumers to those
2172 * that are functionally necessary to accommodate a new interface version.
2173 */
2174 #define pfioc_altq __CONCAT(pfioc_altq_v, PFIOC_ALTQ_VERSION)
2175 #define pfioc_qstats __CONCAT(pfioc_qstats_v, PFIOC_QSTATS_VERSION)
2176 #define pf_ifspeed __CONCAT(pf_ifspeed_v, PF_IFSPEED_VERSION)
2177
2178 #define DIOCADDALTQ __CONCAT(DIOCADDALTQV, PFIOC_ALTQ_VERSION)
2179 #define DIOCGETALTQS __CONCAT(DIOCGETALTQSV, PFIOC_ALTQ_VERSION)
2180 #define DIOCGETALTQ __CONCAT(DIOCGETALTQV, PFIOC_ALTQ_VERSION)
2181 #define DIOCCHANGEALTQ __CONCAT(DIOCCHANGEALTQV, PFIOC_ALTQ_VERSION)
2182 #define DIOCGETQSTATS __CONCAT(DIOCGETQSTATSV, PFIOC_QSTATS_VERSION)
2183 #define DIOCGIFSPEED __CONCAT(DIOCGIFSPEEDV, PF_IFSPEED_VERSION)
2184 #else
2185 /*
2186 * When building out-of-tree code that is written for the old interface,
2187 * such as may exist in ports for example, resolve the old struct tags and
2188 * ioctl command names to the v0 versions.
2189 */
2190 #define pfioc_altq __CONCAT(pfioc_altq_v, 0)
2191 #define pfioc_qstats __CONCAT(pfioc_qstats_v, 0)
2192 #define pf_ifspeed __CONCAT(pf_ifspeed_v, 0)
2193
2194 #define DIOCADDALTQ __CONCAT(DIOCADDALTQV, 0)
2195 #define DIOCGETALTQS __CONCAT(DIOCGETALTQSV, 0)
2196 #define DIOCGETALTQ __CONCAT(DIOCGETALTQV, 0)
2197 #define DIOCCHANGEALTQ __CONCAT(DIOCCHANGEALTQV, 0)
2198 #define DIOCGETQSTATS __CONCAT(DIOCGETQSTATSV, 0)
2199 #define DIOCGIFSPEED __CONCAT(DIOCGIFSPEEDV, 0)
2200 #endif /* PFIOC_USE_LATEST */
2201 #endif /* _KERNEL */
2202
2203 #ifdef _KERNEL
2204 LIST_HEAD(pf_ksrc_node_list, pf_ksrc_node);
2205 struct pf_srchash {
2206 struct pf_ksrc_node_list nodes;
2207 struct mtx lock;
2208 };
2209
2210 struct pf_keyhash {
2211 LIST_HEAD(, pf_state_key) keys;
2212 struct mtx lock;
2213 };
2214
2215 struct pf_idhash {
2216 LIST_HEAD(, pf_kstate) states;
2217 struct mtx lock;
2218 };
2219
2220 struct pf_udpendpointhash {
2221 LIST_HEAD(, pf_udp_endpoint) endpoints;
2222 /* refcont is synchronized on the source endpoint's row lock */
2223 struct mtx lock;
2224 };
2225
2226 extern u_long pf_ioctl_maxcount;
2227 VNET_DECLARE(u_long, pf_hashmask);
2228 #define V_pf_hashmask VNET(pf_hashmask)
2229 VNET_DECLARE(u_long, pf_srchashmask);
2230 #define V_pf_srchashmask VNET(pf_srchashmask)
2231 VNET_DECLARE(u_long, pf_udpendpointhashmask);
2232 #define V_pf_udpendpointhashmask VNET(pf_udpendpointhashmask)
2233 #define PF_HASHSIZ (131072)
2234 #define PF_SRCHASHSIZ (PF_HASHSIZ/4)
2235 #define PF_UDPENDHASHSIZ (PF_HASHSIZ/4)
2236 VNET_DECLARE(struct pf_keyhash *, pf_keyhash);
2237 VNET_DECLARE(struct pf_idhash *, pf_idhash);
2238 VNET_DECLARE(struct pf_udpendpointhash *, pf_udpendpointhash);
2239 #define V_pf_keyhash VNET(pf_keyhash)
2240 #define V_pf_idhash VNET(pf_idhash)
2241 #define V_pf_udpendpointhash VNET(pf_udpendpointhash)
2242 VNET_DECLARE(struct pf_srchash *, pf_srchash);
2243 #define V_pf_srchash VNET(pf_srchash)
2244
2245 #define PF_IDHASHID(id) (be64toh(id) % (V_pf_hashmask + 1))
2246 #define PF_IDHASH(s) PF_IDHASHID((s)->id)
2247
2248 VNET_DECLARE(void *, pf_swi_cookie);
2249 #define V_pf_swi_cookie VNET(pf_swi_cookie)
2250 VNET_DECLARE(struct intr_event *, pf_swi_ie);
2251 #define V_pf_swi_ie VNET(pf_swi_ie)
2252
2253 VNET_DECLARE(struct unrhdr64, pf_stateid);
2254 #define V_pf_stateid VNET(pf_stateid)
2255
2256 TAILQ_HEAD(pf_altqqueue, pf_altq);
2257 VNET_DECLARE(struct pf_altqqueue, pf_altqs[4]);
2258 #define V_pf_altqs VNET(pf_altqs)
2259 VNET_DECLARE(struct pf_kpalist, pf_pabuf[3]);
2260 #define V_pf_pabuf VNET(pf_pabuf)
2261
2262 VNET_DECLARE(u_int32_t, ticket_altqs_active);
2263 #define V_ticket_altqs_active VNET(ticket_altqs_active)
2264 VNET_DECLARE(u_int32_t, ticket_altqs_inactive);
2265 #define V_ticket_altqs_inactive VNET(ticket_altqs_inactive)
2266 VNET_DECLARE(int, altqs_inactive_open);
2267 #define V_altqs_inactive_open VNET(altqs_inactive_open)
2268 VNET_DECLARE(u_int32_t, ticket_pabuf);
2269 #define V_ticket_pabuf VNET(ticket_pabuf)
2270 VNET_DECLARE(struct pf_altqqueue *, pf_altqs_active);
2271 #define V_pf_altqs_active VNET(pf_altqs_active)
2272 VNET_DECLARE(struct pf_altqqueue *, pf_altq_ifs_active);
2273 #define V_pf_altq_ifs_active VNET(pf_altq_ifs_active)
2274 VNET_DECLARE(struct pf_altqqueue *, pf_altqs_inactive);
2275 #define V_pf_altqs_inactive VNET(pf_altqs_inactive)
2276 VNET_DECLARE(struct pf_altqqueue *, pf_altq_ifs_inactive);
2277 #define V_pf_altq_ifs_inactive VNET(pf_altq_ifs_inactive)
2278
2279 VNET_DECLARE(struct pf_krulequeue, pf_unlinked_rules);
2280 #define V_pf_unlinked_rules VNET(pf_unlinked_rules)
2281
2282 #ifdef PF_WANT_32_TO_64_COUNTER
2283 LIST_HEAD(allkiflist_head, pfi_kkif);
2284 VNET_DECLARE(struct allkiflist_head, pf_allkiflist);
2285 #define V_pf_allkiflist VNET(pf_allkiflist)
2286 VNET_DECLARE(size_t, pf_allkifcount);
2287 #define V_pf_allkifcount VNET(pf_allkifcount)
2288 VNET_DECLARE(struct pfi_kkif *, pf_kifmarker);
2289 #define V_pf_kifmarker VNET(pf_kifmarker)
2290
2291 LIST_HEAD(allrulelist_head, pf_krule);
2292 VNET_DECLARE(struct allrulelist_head, pf_allrulelist);
2293 #define V_pf_allrulelist VNET(pf_allrulelist)
2294 VNET_DECLARE(size_t, pf_allrulecount);
2295 #define V_pf_allrulecount VNET(pf_allrulecount)
2296 VNET_DECLARE(struct pf_krule *, pf_rulemarker);
2297 #define V_pf_rulemarker VNET(pf_rulemarker)
2298 #endif
2299
2300 void unhandled_af(int) __dead2;
2301 int pf_start(void);
2302 int pf_stop(void);
2303 void pf_initialize(void);
2304 void pf_mtag_initialize(void);
2305 void pf_mtag_cleanup(void);
2306 void pf_cleanup(void);
2307
2308 struct pf_mtag *pf_get_mtag(struct mbuf *);
2309
2310 extern void pf_calc_skip_steps(struct pf_krulequeue *);
2311 #ifdef ALTQ
2312 extern void pf_altq_ifnet_event(struct ifnet *, int);
2313 #endif
2314 VNET_DECLARE(uma_zone_t, pf_state_z);
2315 #define V_pf_state_z VNET(pf_state_z)
2316 VNET_DECLARE(uma_zone_t, pf_state_key_z);
2317 #define V_pf_state_key_z VNET(pf_state_key_z)
2318 VNET_DECLARE(uma_zone_t, pf_udp_mapping_z);
2319 #define V_pf_udp_mapping_z VNET(pf_udp_mapping_z)
2320 VNET_DECLARE(uma_zone_t, pf_state_scrub_z);
2321 #define V_pf_state_scrub_z VNET(pf_state_scrub_z)
2322
2323 extern void pf_purge_thread(void *);
2324 extern void pf_unload_vnet_purge(void);
2325 extern void pf_intr(void *);
2326 extern void pf_purge_expired_src_nodes(void);
2327
2328 extern int pf_remove_state(struct pf_kstate *);
2329 extern int pf_state_insert(struct pfi_kkif *,
2330 struct pfi_kkif *,
2331 struct pf_state_key *,
2332 struct pf_state_key *,
2333 struct pf_kstate *);
2334 extern struct pf_kstate *pf_alloc_state(int);
2335 extern void pf_free_state(struct pf_kstate *);
2336 extern void pf_killstates(struct pf_kstate_kill *,
2337 unsigned int *);
2338 extern unsigned int pf_clear_states(const struct pf_kstate_kill *);
2339
2340 static __inline void
pf_ref_state(struct pf_kstate * s)2341 pf_ref_state(struct pf_kstate *s)
2342 {
2343
2344 refcount_acquire(&s->refs);
2345 }
2346
2347 static __inline int
pf_release_state(struct pf_kstate * s)2348 pf_release_state(struct pf_kstate *s)
2349 {
2350
2351 if (refcount_release(&s->refs)) {
2352 pf_free_state(s);
2353 return (1);
2354 } else
2355 return (0);
2356 }
2357
2358 static __inline int
pf_release_staten(struct pf_kstate * s,u_int n)2359 pf_release_staten(struct pf_kstate *s, u_int n)
2360 {
2361
2362 if (refcount_releasen(&s->refs, n)) {
2363 pf_free_state(s);
2364 return (1);
2365 } else
2366 return (0);
2367 }
2368
2369 static __inline uint64_t
pf_get_uptime(void)2370 pf_get_uptime(void)
2371 {
2372 struct timeval t;
2373 microuptime(&t);
2374 return ((t.tv_sec * 1000) + (t.tv_usec / 1000));
2375 }
2376
2377 static __inline uint64_t
pf_get_time(void)2378 pf_get_time(void)
2379 {
2380 struct timeval t;
2381 microtime(&t);
2382 return ((t.tv_sec * 1000) + (t.tv_usec / 1000));
2383 }
2384
2385 extern struct pf_kstate *pf_find_state_byid(uint64_t, uint32_t);
2386 extern struct pf_kstate *pf_find_state_all(
2387 const struct pf_state_key_cmp *,
2388 u_int, int *);
2389 extern bool pf_find_state_all_exists(
2390 const struct pf_state_key_cmp *,
2391 u_int);
2392 extern struct pf_udp_mapping *pf_udp_mapping_find(struct pf_udp_endpoint_cmp
2393 *endpoint);
2394 extern struct pf_udp_mapping *pf_udp_mapping_create(sa_family_t af,
2395 struct pf_addr *src_addr, uint16_t src_port,
2396 struct pf_addr *nat_addr, uint16_t nat_port);
2397 extern int pf_udp_mapping_insert(struct pf_udp_mapping
2398 *mapping);
2399 extern void pf_udp_mapping_release(struct pf_udp_mapping
2400 *mapping);
2401 uint32_t pf_hashsrc(struct pf_addr *, sa_family_t);
2402 extern bool pf_src_node_exists(struct pf_ksrc_node **,
2403 struct pf_srchash *);
2404 extern struct pf_ksrc_node *pf_find_src_node(struct pf_addr *,
2405 struct pf_krule *, sa_family_t,
2406 struct pf_srchash **, pf_sn_types_t, bool);
2407 extern void pf_unlink_src_node(struct pf_ksrc_node *);
2408 extern u_int pf_free_src_nodes(struct pf_ksrc_node_list *);
2409 extern void pf_print_state(struct pf_kstate *);
2410 extern void pf_print_flags(uint16_t);
2411 extern int pf_addr_wrap_neq(struct pf_addr_wrap *,
2412 struct pf_addr_wrap *);
2413 extern u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t,
2414 u_int8_t);
2415 extern u_int16_t pf_proto_cksum_fixup(struct mbuf *, u_int16_t,
2416 u_int16_t, u_int16_t, u_int8_t);
2417
2418 VNET_DECLARE(struct ifnet *, sync_ifp);
2419 #define V_sync_ifp VNET(sync_ifp);
2420 VNET_DECLARE(struct pf_krule, pf_default_rule);
2421 #define V_pf_default_rule VNET(pf_default_rule)
2422 extern void pf_addrcpy(struct pf_addr *, const struct pf_addr *,
2423 sa_family_t);
2424 void pf_free_rule(struct pf_krule *);
2425
2426 int pf_test_eth(int, int, struct ifnet *, struct mbuf **, struct inpcb *);
2427 int pf_scan_sctp(struct pf_pdesc *);
2428 #if defined(INET) || defined(INET6)
2429 int pf_test(sa_family_t, int, int, struct ifnet *, struct mbuf **, struct inpcb *,
2430 struct pf_rule_actions *);
2431 #endif
2432 #ifdef INET
2433 int pf_normalize_ip(u_short *, struct pf_pdesc *);
2434 #endif /* INET */
2435
2436 #ifdef INET6
2437 int pf_normalize_ip6(int, u_short *, struct pf_pdesc *);
2438 void pf_poolmask(struct pf_addr *, struct pf_addr*,
2439 struct pf_addr *, struct pf_addr *, sa_family_t);
2440 void pf_addr_inc(struct pf_addr *, sa_family_t);
2441 int pf_max_frag_size(struct mbuf *);
2442 int pf_refragment6(struct ifnet *, struct mbuf **, struct m_tag *,
2443 struct ifnet *, bool);
2444 #endif /* INET6 */
2445
2446 int pf_multihome_scan_init(int, int, struct pf_pdesc *);
2447 int pf_multihome_scan_asconf(int, int, struct pf_pdesc *);
2448
2449 u_int32_t pf_new_isn(struct pf_kstate *);
2450 void *pf_pull_hdr(const struct mbuf *, int, void *, int, u_short *, u_short *,
2451 sa_family_t);
2452 void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t);
2453 void pf_change_proto_a(struct mbuf *, void *, u_int16_t *, u_int32_t,
2454 u_int8_t);
2455 void pf_change_tcp_a(struct mbuf *, void *, u_int16_t *, u_int32_t);
2456 void pf_patch_16(struct pf_pdesc *, void *, u_int16_t, bool);
2457 void pf_patch_32(struct pf_pdesc *, void *, u_int32_t, bool);
2458 void pf_send_deferred_syn(struct pf_kstate *);
2459 int pf_match_addr(u_int8_t, const struct pf_addr *,
2460 const struct pf_addr *, const struct pf_addr *, sa_family_t);
2461 int pf_match_addr_range(const struct pf_addr *, const struct pf_addr *,
2462 const struct pf_addr *, sa_family_t);
2463 int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t);
2464
2465 void pf_normalize_init(void);
2466 void pf_normalize_cleanup(void);
2467 int pf_normalize_tcp(struct pf_pdesc *);
2468 void pf_normalize_tcp_cleanup(struct pf_kstate *);
2469 int pf_normalize_tcp_init(struct pf_pdesc *,
2470 struct tcphdr *, struct pf_state_peer *);
2471 int pf_normalize_tcp_stateful(struct pf_pdesc *,
2472 u_short *, struct tcphdr *, struct pf_kstate *,
2473 struct pf_state_peer *, struct pf_state_peer *, int *);
2474 int pf_normalize_sctp_init(struct pf_pdesc *,
2475 struct pf_state_peer *, struct pf_state_peer *);
2476 int pf_normalize_sctp(struct pf_pdesc *);
2477 u_int32_t
2478 pf_state_expires(const struct pf_kstate *);
2479 void pf_purge_expired_fragments(void);
2480 void pf_purge_fragments(uint32_t);
2481 int pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kkif *,
2482 int);
2483 int pf_socket_lookup(struct pf_pdesc *);
2484 struct pf_state_key *pf_alloc_state_key(int);
2485 int pf_translate(struct pf_pdesc *, struct pf_addr *, u_int16_t,
2486 struct pf_addr *, u_int16_t, u_int16_t, int);
2487 int pf_translate_af(struct pf_pdesc *);
2488 void pfr_initialize(void);
2489 void pfr_cleanup(void);
2490 int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t);
2491 void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t,
2492 u_int64_t, int, int, int);
2493 int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, sa_family_t,
2494 pf_addr_filter_func_t);
2495 void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *);
2496 struct pfr_ktable *
2497 pfr_attach_table(struct pf_kruleset *, char *);
2498 struct pfr_ktable *
2499 pfr_eth_attach_table(struct pf_keth_ruleset *, char *);
2500 void pfr_detach_table(struct pfr_ktable *);
2501 int pfr_clr_tables(struct pfr_table *, int *, int);
2502 int pfr_add_tables(struct pfr_table *, int, int *, int);
2503 int pfr_del_tables(struct pfr_table *, int, int *, int);
2504 int pfr_table_count(struct pfr_table *, int);
2505 int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int);
2506 int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int);
2507 int pfr_clr_tstats(struct pfr_table *, int, int *, int);
2508 int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int);
2509 int pfr_clr_addrs(struct pfr_table *, int *, int);
2510 int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *, time_t);
2511 int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
2512 int);
2513 int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
2514 int);
2515 int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
2516 int *, int *, int *, int, u_int32_t);
2517 int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int);
2518 int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int);
2519 int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *,
2520 int);
2521 int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
2522 int);
2523 int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int);
2524 int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int);
2525 int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int);
2526 int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *,
2527 int *, u_int32_t, int);
2528
2529 MALLOC_DECLARE(PFI_MTYPE);
2530 VNET_DECLARE(struct pfi_kkif *, pfi_all);
2531 #define V_pfi_all VNET(pfi_all)
2532
2533 void pfi_initialize(void);
2534 void pfi_initialize_vnet(void);
2535 void pfi_cleanup(void);
2536 void pfi_cleanup_vnet(void);
2537 void pfi_kkif_ref(struct pfi_kkif *);
2538 void pfi_kkif_unref(struct pfi_kkif *);
2539 struct pfi_kkif *pfi_kkif_find(const char *);
2540 struct pfi_kkif *pfi_kkif_attach(struct pfi_kkif *, const char *);
2541 int pfi_kkif_match(struct pfi_kkif *, struct pfi_kkif *);
2542 void pfi_kkif_purge(void);
2543 int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *,
2544 sa_family_t);
2545 int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t);
2546 void pfi_dynaddr_remove(struct pfi_dynaddr *);
2547 void pfi_dynaddr_copyout(struct pf_addr_wrap *);
2548 void pfi_update_status(const char *, struct pf_status *);
2549 void pfi_get_ifaces(const char *, struct pfi_kif *, int *);
2550 int pfi_set_flags(const char *, int);
2551 int pfi_clear_flags(const char *, int);
2552
2553 int pf_match_tag(struct mbuf *, struct pf_krule *, int *, int);
2554 int pf_tag_packet(struct pf_pdesc *, int);
2555 int pf_addr_cmp(struct pf_addr *, struct pf_addr *,
2556 sa_family_t);
2557
2558 u_int16_t pf_get_mss(struct pf_pdesc *);
2559 u_int8_t pf_get_wscale(struct pf_pdesc *);
2560 struct mbuf *pf_build_tcp(const struct pf_krule *, sa_family_t,
2561 const struct pf_addr *, const struct pf_addr *,
2562 u_int16_t, u_int16_t, u_int32_t, u_int32_t,
2563 u_int8_t, u_int16_t, u_int16_t, u_int8_t, int,
2564 u_int16_t, u_int16_t, int);
2565 void pf_send_tcp(const struct pf_krule *, sa_family_t,
2566 const struct pf_addr *, const struct pf_addr *,
2567 u_int16_t, u_int16_t, u_int32_t, u_int32_t,
2568 u_int8_t, u_int16_t, u_int16_t, u_int8_t, int,
2569 u_int16_t, u_int16_t, int);
2570
2571 void pf_syncookies_init(void);
2572 void pf_syncookies_cleanup(void);
2573 int pf_get_syncookies(struct pfioc_nv *);
2574 int pf_set_syncookies(struct pfioc_nv *);
2575 int pf_synflood_check(struct pf_pdesc *);
2576 void pf_syncookie_send(struct pf_pdesc *);
2577 bool pf_syncookie_check(struct pf_pdesc *);
2578 u_int8_t pf_syncookie_validate(struct pf_pdesc *);
2579 struct mbuf * pf_syncookie_recreate_syn(struct pf_pdesc *);
2580
2581 VNET_DECLARE(struct pf_kstatus, pf_status);
2582 #define V_pf_status VNET(pf_status)
2583
2584 struct pf_limit {
2585 uma_zone_t zone;
2586 u_int limit;
2587 };
2588 VNET_DECLARE(struct pf_limit, pf_limits[PF_LIMIT_MAX]);
2589 #define V_pf_limits VNET(pf_limits)
2590
2591 #endif /* _KERNEL */
2592
2593 #ifdef _KERNEL
2594 struct pf_nl_pooladdr {
2595 u_int32_t action;
2596 u_int32_t ticket;
2597 u_int32_t nr;
2598 u_int32_t r_num;
2599 u_int8_t r_action;
2600 u_int8_t r_last;
2601 u_int8_t af;
2602 char anchor[MAXPATHLEN];
2603 struct pf_pooladdr addr;
2604 /* Above this is identical to pfioc_pooladdr */
2605 int which;
2606 };
2607
2608 VNET_DECLARE(struct pf_kanchor_global, pf_anchors);
2609 #define V_pf_anchors VNET(pf_anchors)
2610 VNET_DECLARE(struct pf_kanchor, pf_main_anchor);
2611 #define V_pf_main_anchor VNET(pf_main_anchor)
2612 VNET_DECLARE(struct pf_keth_anchor_global, pf_keth_anchors);
2613 #define V_pf_keth_anchors VNET(pf_keth_anchors)
2614 #define pf_main_ruleset V_pf_main_anchor.ruleset
2615
2616 VNET_DECLARE(struct pf_keth_anchor, pf_main_keth_anchor);
2617 #define V_pf_main_keth_anchor VNET(pf_main_keth_anchor)
2618 VNET_DECLARE(struct pf_keth_ruleset*, pf_keth);
2619 #define V_pf_keth VNET(pf_keth)
2620
2621 void pf_init_kruleset(struct pf_kruleset *);
2622 void pf_init_keth(struct pf_keth_ruleset *);
2623 int pf_kanchor_setup(struct pf_krule *,
2624 const struct pf_kruleset *, const char *);
2625 int pf_kanchor_copyout(const struct pf_kruleset *,
2626 const struct pf_krule *, char *, size_t);
2627 int pf_kanchor_nvcopyout(const struct pf_kruleset *,
2628 const struct pf_krule *, nvlist_t *);
2629 void pf_kanchor_remove(struct pf_krule *);
2630 void pf_remove_if_empty_kruleset(struct pf_kruleset *);
2631 struct pf_kruleset *pf_find_kruleset(const char *);
2632 struct pf_kruleset *pf_find_or_create_kruleset(const char *);
2633 void pf_rs_initialize(void);
2634
2635
2636 struct pf_krule *pf_krule_alloc(void);
2637
2638 void pf_remove_if_empty_keth_ruleset(
2639 struct pf_keth_ruleset *);
2640 struct pf_keth_ruleset *pf_find_keth_ruleset(const char *);
2641 struct pf_keth_anchor *pf_find_keth_anchor(const char *);
2642 int pf_keth_anchor_setup(struct pf_keth_rule *,
2643 const struct pf_keth_ruleset *, const char *);
2644 int pf_keth_anchor_nvcopyout(
2645 const struct pf_keth_ruleset *,
2646 const struct pf_keth_rule *, nvlist_t *);
2647 struct pf_keth_ruleset *pf_find_or_create_keth_ruleset(const char *);
2648 void pf_keth_anchor_remove(struct pf_keth_rule *);
2649
2650 int pf_ioctl_getrules(struct pfioc_rule *);
2651 int pf_ioctl_addrule(struct pf_krule *, uint32_t,
2652 uint32_t, const char *, const char *, uid_t uid,
2653 pid_t);
2654 void pf_ioctl_clear_status(void);
2655 int pf_ioctl_get_timeout(int, int *);
2656 int pf_ioctl_set_timeout(int, int, int *);
2657 int pf_ioctl_get_limit(int, unsigned int *);
2658 int pf_ioctl_set_limit(int, unsigned int, unsigned int *);
2659 int pf_ioctl_begin_addrs(uint32_t *);
2660 int pf_ioctl_add_addr(struct pf_nl_pooladdr *);
2661 int pf_ioctl_get_addrs(struct pf_nl_pooladdr *);
2662 int pf_ioctl_get_addr(struct pf_nl_pooladdr *);
2663 int pf_ioctl_get_rulesets(struct pfioc_ruleset *);
2664 int pf_ioctl_get_ruleset(struct pfioc_ruleset *);
2665
2666 void pf_krule_free(struct pf_krule *);
2667 void pf_krule_clear_counters(struct pf_krule *);
2668 void pf_addr_copyout(struct pf_addr_wrap *);
2669 #endif
2670
2671 /* The fingerprint functions can be linked into userland programs (tcpdump) */
2672 int pf_osfp_add(struct pf_osfp_ioctl *);
2673 #ifdef _KERNEL
2674 struct pf_osfp_enlist *
2675 pf_osfp_fingerprint(struct pf_pdesc *, const struct tcphdr *);
2676 #endif /* _KERNEL */
2677 void pf_osfp_flush(void);
2678 int pf_osfp_get(struct pf_osfp_ioctl *);
2679 int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t);
2680
2681 #ifdef _KERNEL
2682 void pf_print_host(struct pf_addr *, u_int16_t, sa_family_t);
2683
2684 void pf_step_into_anchor(struct pf_kanchor_stackframe *, int *,
2685 struct pf_kruleset **, int, struct pf_krule **,
2686 struct pf_krule **);
2687 int pf_step_out_of_anchor(struct pf_kanchor_stackframe *, int *,
2688 struct pf_kruleset **, int, struct pf_krule **,
2689 struct pf_krule **, int *);
2690 void pf_step_into_keth_anchor(struct pf_keth_anchor_stackframe *,
2691 int *, struct pf_keth_ruleset **,
2692 struct pf_keth_rule **, struct pf_keth_rule **,
2693 int *);
2694 int pf_step_out_of_keth_anchor(struct pf_keth_anchor_stackframe *,
2695 int *, struct pf_keth_ruleset **,
2696 struct pf_keth_rule **, struct pf_keth_rule **,
2697 int *);
2698
2699 u_short pf_map_addr(u_int8_t, struct pf_krule *,
2700 struct pf_addr *, struct pf_addr *,
2701 struct pfi_kkif **nkif, struct pf_addr *,
2702 struct pf_kpool *);
2703 u_short pf_map_addr_sn(u_int8_t, struct pf_krule *,
2704 struct pf_addr *, struct pf_addr *,
2705 struct pfi_kkif **nkif, struct pf_addr *,
2706 struct pf_ksrc_node **, struct pf_srchash **,
2707 struct pf_kpool *, pf_sn_types_t);
2708 int pf_get_transaddr_af(struct pf_krule *,
2709 struct pf_pdesc *);
2710 u_short pf_get_translation(struct pf_pdesc *,
2711 int, struct pf_state_key **, struct pf_state_key **,
2712 struct pf_kanchor_stackframe *, struct pf_krule **,
2713 struct pf_udp_mapping **udp_mapping);
2714
2715 int pf_state_key_setup(struct pf_pdesc *,
2716 u_int16_t, u_int16_t,
2717 struct pf_state_key **sk, struct pf_state_key **nk);
2718 struct pf_state_key *pf_state_key_clone(const struct pf_state_key *);
2719 void pf_rule_to_actions(struct pf_krule *,
2720 struct pf_rule_actions *);
2721 int pf_normalize_mss(struct pf_pdesc *pd);
2722 #if defined(INET) || defined(INET6)
2723 void pf_scrub(struct pf_pdesc *);
2724 #endif
2725
2726 struct pfi_kkif *pf_kkif_create(int);
2727 void pf_kkif_free(struct pfi_kkif *);
2728 void pf_kkif_zero(struct pfi_kkif *);
2729
2730
2731 /* NAT64 functions. */
2732 int inet_nat64(int, const void *, void *, const void *, u_int8_t);
2733 int inet_nat64_inet(const void *, void *, const void *, u_int8_t);
2734 int inet_nat64_inet6(const void *, void *, const void *, u_int8_t);
2735
2736 int inet_nat46(int, const void *, void *, const void *, u_int8_t);
2737 int inet_nat46_inet(const void *, void *, const void *, u_int8_t);
2738 int inet_nat46_inet6(const void *, void *, const void *, u_int8_t);
2739
2740 #endif /* _KERNEL */
2741
2742 #endif /* _NET_PFVAR_H_ */
2743