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_PF);
330 MALLOC_DECLARE(M_PFHASH);
331 MALLOC_DECLARE(M_PF_RULE_ITEM);
332
333 SDT_PROVIDER_DECLARE(pf);
334 SDT_PROBE_DECLARE(pf, , test, reason_set);
335 SDT_PROBE_DECLARE(pf, , log, log);
336
337 #define DPFPRINTF(n, fmt, x...) \
338 do { \
339 SDT_PROBE2(pf, , log, log, (n), fmt); \
340 if (V_pf_status.debug >= (n)) \
341 printf(fmt "\n", ##x); \
342 } while (0)
343
344 struct pfi_dynaddr {
345 TAILQ_ENTRY(pfi_dynaddr) entry;
346 struct pf_addr pfid_addr4;
347 struct pf_addr pfid_mask4;
348 struct pf_addr pfid_addr6;
349 struct pf_addr pfid_mask6;
350 struct pfr_ktable *pfid_kt;
351 struct pfi_kkif *pfid_kif;
352 int pfid_net; /* mask or 128 */
353 int pfid_acnt4; /* address count IPv4 */
354 int pfid_acnt6; /* address count IPv6 */
355 sa_family_t pfid_af; /* rule af */
356 u_int8_t pfid_iflags; /* PFI_AFLAG_* */
357 };
358
359 #define PF_NAME "pf"
360
361 #define PF_HASHROW_ASSERT(h) mtx_assert(&(h)->lock, MA_OWNED)
362 #define PF_HASHROW_LOCK(h) mtx_lock(&(h)->lock)
363 #define PF_HASHROW_UNLOCK(h) mtx_unlock(&(h)->lock)
364
365 #ifdef INVARIANTS
366 #define PF_STATE_LOCK(s) \
367 do { \
368 struct pf_kstate *_s = (s); \
369 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(_s)]; \
370 MPASS(_s->lock == &_ih->lock); \
371 mtx_lock(_s->lock); \
372 } while (0)
373 #define PF_STATE_UNLOCK(s) \
374 do { \
375 struct pf_kstate *_s = (s); \
376 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(_s)]; \
377 MPASS(_s->lock == &_ih->lock); \
378 mtx_unlock(_s->lock); \
379 } while (0)
380 #else
381 #define PF_STATE_LOCK(s) mtx_lock((s)->lock)
382 #define PF_STATE_UNLOCK(s) mtx_unlock((s)->lock)
383 #endif
384
385 #ifdef INVARIANTS
386 #define PF_STATE_LOCK_ASSERT(s) \
387 do { \
388 struct pf_kstate *_s = (s); \
389 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(_s)]; \
390 MPASS(_s->lock == &_ih->lock); \
391 PF_HASHROW_ASSERT(_ih); \
392 } while (0)
393 #else /* !INVARIANTS */
394 #define PF_STATE_LOCK_ASSERT(s) do {} while (0)
395 #endif /* INVARIANTS */
396
397 #ifdef INVARIANTS
398 #define PF_SRC_NODE_LOCK(sn) \
399 do { \
400 struct pf_ksrc_node *_sn = (sn); \
401 struct pf_srchash *_sh = &V_pf_srchash[ \
402 pf_hashsrc(&_sn->addr, _sn->af)]; \
403 MPASS(_sn->lock == &_sh->lock); \
404 mtx_lock(_sn->lock); \
405 } while (0)
406 #define PF_SRC_NODE_UNLOCK(sn) \
407 do { \
408 struct pf_ksrc_node *_sn = (sn); \
409 struct pf_srchash *_sh = &V_pf_srchash[ \
410 pf_hashsrc(&_sn->addr, _sn->af)]; \
411 MPASS(_sn->lock == &_sh->lock); \
412 mtx_unlock(_sn->lock); \
413 } while (0)
414 #else
415 #define PF_SRC_NODE_LOCK(sn) mtx_lock((sn)->lock)
416 #define PF_SRC_NODE_UNLOCK(sn) mtx_unlock((sn)->lock)
417 #endif
418
419 #ifdef INVARIANTS
420 #define PF_SRC_NODE_LOCK_ASSERT(sn) \
421 do { \
422 struct pf_ksrc_node *_sn = (sn); \
423 struct pf_srchash *_sh = &V_pf_srchash[ \
424 pf_hashsrc(&_sn->addr, _sn->af)]; \
425 MPASS(_sn->lock == &_sh->lock); \
426 PF_HASHROW_ASSERT(_sh); \
427 } while (0)
428 #else /* !INVARIANTS */
429 #define PF_SRC_NODE_LOCK_ASSERT(sn) do {} while (0)
430 #endif /* INVARIANTS */
431
432 extern struct mtx_padalign pf_unlnkdrules_mtx;
433 #define PF_UNLNKDRULES_LOCK() mtx_lock(&pf_unlnkdrules_mtx)
434 #define PF_UNLNKDRULES_UNLOCK() mtx_unlock(&pf_unlnkdrules_mtx)
435 #define PF_UNLNKDRULES_ASSERT() mtx_assert(&pf_unlnkdrules_mtx, MA_OWNED)
436
437 extern struct sx pf_config_lock;
438 #define PF_CONFIG_LOCK() sx_xlock(&pf_config_lock)
439 #define PF_CONFIG_UNLOCK() sx_xunlock(&pf_config_lock)
440 #define PF_CONFIG_ASSERT() sx_assert(&pf_config_lock, SA_XLOCKED)
441
442 VNET_DECLARE(struct rmlock, pf_rules_lock);
443 #define V_pf_rules_lock VNET(pf_rules_lock)
444
445 #define PF_RULES_RLOCK_TRACKER struct rm_priotracker _pf_rules_tracker
446 #define PF_RULES_RLOCK() rm_rlock(&V_pf_rules_lock, &_pf_rules_tracker)
447 #define PF_RULES_RUNLOCK() rm_runlock(&V_pf_rules_lock, &_pf_rules_tracker)
448 #define PF_RULES_WLOCK() rm_wlock(&V_pf_rules_lock)
449 #define PF_RULES_WUNLOCK() rm_wunlock(&V_pf_rules_lock)
450 #define PF_RULES_WOWNED() rm_wowned(&V_pf_rules_lock)
451 #define PF_RULES_ASSERT() rm_assert(&V_pf_rules_lock, RA_LOCKED)
452 #define PF_RULES_RASSERT() rm_assert(&V_pf_rules_lock, RA_RLOCKED)
453 #define PF_RULES_WASSERT() rm_assert(&V_pf_rules_lock, RA_WLOCKED)
454
455 VNET_DECLARE(struct rmlock, pf_tags_lock);
456 #define V_pf_tags_lock VNET(pf_tags_lock)
457
458 #define PF_TAGS_RLOCK_TRACKER struct rm_priotracker _pf_tags_tracker
459 #define PF_TAGS_RLOCK() rm_rlock(&V_pf_tags_lock, &_pf_tags_tracker)
460 #define PF_TAGS_RUNLOCK() rm_runlock(&V_pf_tags_lock, &_pf_tags_tracker)
461 #define PF_TAGS_WLOCK() rm_wlock(&V_pf_tags_lock)
462 #define PF_TAGS_WUNLOCK() rm_wunlock(&V_pf_tags_lock)
463 #define PF_TAGS_WASSERT() rm_assert(&V_pf_tags_lock, RA_WLOCKED)
464
465 extern struct mtx_padalign pf_table_stats_lock;
466 #define PF_TABLE_STATS_LOCK() mtx_lock(&pf_table_stats_lock)
467 #define PF_TABLE_STATS_UNLOCK() mtx_unlock(&pf_table_stats_lock)
468 #define PF_TABLE_STATS_OWNED() mtx_owned(&pf_table_stats_lock)
469 #define PF_TABLE_STATS_ASSERT() mtx_assert(&pf_table_stats_lock, MA_OWNED)
470
471 extern struct sx pf_end_lock;
472
473 #define PF_MODVER 1
474 #define PFLOG_MODVER 1
475 #define PFSYNC_MODVER 1
476
477 #define PFLOG_MINVER 1
478 #define PFLOG_PREFVER PFLOG_MODVER
479 #define PFLOG_MAXVER 1
480 #define PFSYNC_MINVER 1
481 #define PFSYNC_PREFVER PFSYNC_MODVER
482 #define PFSYNC_MAXVER 1
483
484 #ifdef INET
485 #ifndef INET6
486 #define PF_INET_ONLY
487 #endif /* ! INET6 */
488 #endif /* INET */
489
490 #ifdef INET6
491 #ifndef INET
492 #define PF_INET6_ONLY
493 #endif /* ! INET */
494 #endif /* INET6 */
495
496 #ifdef INET
497 #ifdef INET6
498 #define PF_INET_INET6
499 #endif /* INET6 */
500 #endif /* INET */
501
502 #else
503
504 #define PF_INET_INET6
505
506 #endif /* _KERNEL */
507
508 /* Both IPv4 and IPv6 */
509 #ifdef PF_INET_INET6
510
511 #define PF_AEQ(a, b, c) \
512 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \
513 (c == AF_INET6 && (a)->addr32[3] == (b)->addr32[3] && \
514 (a)->addr32[2] == (b)->addr32[2] && \
515 (a)->addr32[1] == (b)->addr32[1] && \
516 (a)->addr32[0] == (b)->addr32[0])) \
517
518 #define PF_ANEQ(a, b, c) \
519 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \
520 (c == AF_INET6 && ((a)->addr32[0] != (b)->addr32[0] || \
521 (a)->addr32[1] != (b)->addr32[1] || \
522 (a)->addr32[2] != (b)->addr32[2] || \
523 (a)->addr32[3] != (b)->addr32[3]))) \
524
525 #define PF_AZERO(a, c) \
526 ((c == AF_INET && !(a)->addr32[0]) || \
527 (c == AF_INET6 && !(a)->addr32[0] && !(a)->addr32[1] && \
528 !(a)->addr32[2] && !(a)->addr32[3] )) \
529
530 #else
531
532 /* Just IPv6 */
533
534 #ifdef PF_INET6_ONLY
535
536 #define PF_AEQ(a, b, c) \
537 ((a)->addr32[3] == (b)->addr32[3] && \
538 (a)->addr32[2] == (b)->addr32[2] && \
539 (a)->addr32[1] == (b)->addr32[1] && \
540 (a)->addr32[0] == (b)->addr32[0]) \
541
542 #define PF_ANEQ(a, b, c) \
543 ((a)->addr32[3] != (b)->addr32[3] || \
544 (a)->addr32[2] != (b)->addr32[2] || \
545 (a)->addr32[1] != (b)->addr32[1] || \
546 (a)->addr32[0] != (b)->addr32[0]) \
547
548 #define PF_AZERO(a, c) \
549 (!(a)->addr32[0] && \
550 !(a)->addr32[1] && \
551 !(a)->addr32[2] && \
552 !(a)->addr32[3] ) \
553
554 #else
555
556 /* Just IPv4 */
557 #ifdef PF_INET_ONLY
558
559 #define PF_AEQ(a, b, c) \
560 ((a)->addr32[0] == (b)->addr32[0])
561
562 #define PF_ANEQ(a, b, c) \
563 ((a)->addr32[0] != (b)->addr32[0])
564
565 #define PF_AZERO(a, c) \
566 (!(a)->addr32[0])
567
568 #endif /* PF_INET_ONLY */
569 #endif /* PF_INET6_ONLY */
570 #endif /* PF_INET_INET6 */
571
572 #ifdef _KERNEL
573
574 void unhandled_af(int) __dead2;
575
576 static void inline
pf_addrcpy(struct pf_addr * dst,const struct pf_addr * src,sa_family_t af)577 pf_addrcpy(struct pf_addr *dst, const struct pf_addr *src, sa_family_t af)
578 {
579 switch (af) {
580 #ifdef INET
581 case AF_INET:
582 memcpy(&dst->v4, &src->v4, sizeof(dst->v4));
583 break;
584 #endif /* INET */
585 #ifdef INET6
586 case AF_INET6:
587 memcpy(&dst->v6, &src->v6, sizeof(dst->v6));
588 break;
589 #endif /* INET6 */
590 default:
591 unhandled_af(af);
592 }
593 }
594 #endif
595
596 /*
597 * XXX callers not FIB-aware in our version of pf yet.
598 * OpenBSD fixed it later it seems, 2010/05/07 13:33:16 claudio.
599 */
600 #define PF_MISMATCHAW(aw, x, af, neg, ifp, rtid) \
601 ( \
602 (((aw)->type == PF_ADDR_NOROUTE && \
603 pf_routable((x), (af), NULL, (rtid))) || \
604 (((aw)->type == PF_ADDR_URPFFAILED && (ifp) != NULL && \
605 pf_routable((x), (af), (ifp), (rtid))) || \
606 ((aw)->type == PF_ADDR_TABLE && \
607 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \
608 ((aw)->type == PF_ADDR_DYNIFTL && \
609 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \
610 ((aw)->type == PF_ADDR_RANGE && \
611 !pf_match_addr_range(&(aw)->v.a.addr, \
612 &(aw)->v.a.mask, (x), (af))) || \
613 ((aw)->type == PF_ADDR_ADDRMASK && \
614 !PF_AZERO(&(aw)->v.a.mask, (af)) && \
615 !pf_match_addr(0, &(aw)->v.a.addr, \
616 &(aw)->v.a.mask, (x), (af))))) != \
617 (neg) \
618 )
619
620 #define PF_ALGNMNT(off) (((off) % 2) == 0)
621
622 /*
623 * At the moment there are no rules which have both NAT and RDR actions,
624 * apart from af-to rules, but those don't to source tracking for address
625 * translation. And the r->rdr pool is used for both NAT and RDR.
626 * So there is no PF_SN_RDR.
627 */
628 enum pf_sn_types { PF_SN_LIMIT, PF_SN_NAT, PF_SN_ROUTE, PF_SN_MAX };
629 typedef enum pf_sn_types pf_sn_types_t;
630 #define PF_SN_TYPE_NAMES { \
631 "limit source-track", \
632 "NAT/RDR sticky-address", \
633 "route sticky-address", \
634 NULL \
635 }
636
637 #ifdef _KERNEL
638
639 struct pf_kpooladdr {
640 struct pf_addr_wrap addr;
641 TAILQ_ENTRY(pf_kpooladdr) entries;
642 char ifname[IFNAMSIZ];
643 sa_family_t af;
644 struct pfi_kkif *kif;
645 };
646
647 TAILQ_HEAD(pf_kpalist, pf_kpooladdr);
648
649 struct pf_kpool {
650 struct mtx mtx;
651 struct pf_kpalist list;
652 struct pf_kpooladdr *cur;
653 struct pf_poolhashkey key;
654 struct pf_addr counter;
655 struct pf_mape_portset mape;
656 int tblidx;
657 u_int16_t proxy_port[2];
658 u_int8_t opts;
659 sa_family_t ipv6_nexthop_af;
660 };
661
662 struct pf_rule_actions {
663 struct pf_addr rt_addr;
664 struct pfi_kkif *rt_kif;
665 int32_t rtableid;
666 uint32_t flags;
667 uint16_t qid;
668 uint16_t pqid;
669 uint16_t max_mss;
670 uint16_t dnpipe;
671 uint16_t dnrpipe; /* Reverse direction pipe */
672 sa_family_t rt_af;
673 uint8_t log;
674 uint8_t set_tos;
675 uint8_t min_ttl;
676 uint8_t set_prio[2];
677 uint8_t rt;
678 uint8_t allow_opts;
679 uint16_t max_pkt_size;
680 };
681
682 union pf_keth_rule_ptr {
683 struct pf_keth_rule *ptr;
684 uint32_t nr;
685 };
686
687 struct pf_keth_rule_addr {
688 uint8_t addr[ETHER_ADDR_LEN];
689 uint8_t mask[ETHER_ADDR_LEN];
690 bool neg;
691 uint8_t isset;
692 };
693
694 struct pf_keth_anchor;
695
696 TAILQ_HEAD(pf_keth_ruleq, pf_keth_rule);
697
698 struct pf_keth_ruleset {
699 struct pf_keth_ruleq rules[2];
700 struct pf_keth_rules {
701 struct pf_keth_ruleq *rules;
702 int open;
703 uint32_t ticket;
704 } active, inactive;
705 struct vnet *vnet;
706 struct pf_keth_anchor *anchor;
707 };
708
709 RB_HEAD(pf_keth_anchor_global, pf_keth_anchor);
710 RB_HEAD(pf_keth_anchor_node, pf_keth_anchor);
711 struct pf_keth_anchor {
712 RB_ENTRY(pf_keth_anchor) entry_node;
713 RB_ENTRY(pf_keth_anchor) entry_global;
714 struct pf_keth_anchor *parent;
715 struct pf_keth_anchor_node children;
716 char name[PF_ANCHOR_NAME_SIZE];
717 char path[MAXPATHLEN];
718 struct pf_keth_ruleset ruleset;
719 int refcnt; /* anchor rules */
720 uint8_t anchor_relative;
721 uint8_t anchor_wildcard;
722 };
723 RB_PROTOTYPE(pf_keth_anchor_node, pf_keth_anchor, entry_node,
724 pf_keth_anchor_compare);
725 RB_PROTOTYPE(pf_keth_anchor_global, pf_keth_anchor, entry_global,
726 pf_keth_anchor_compare);
727
728 struct pf_keth_rule {
729 #define PFE_SKIP_IFP 0
730 #define PFE_SKIP_DIR 1
731 #define PFE_SKIP_PROTO 2
732 #define PFE_SKIP_SRC_ADDR 3
733 #define PFE_SKIP_DST_ADDR 4
734 #define PFE_SKIP_SRC_IP_ADDR 5
735 #define PFE_SKIP_DST_IP_ADDR 6
736 #define PFE_SKIP_COUNT 7
737 union pf_keth_rule_ptr skip[PFE_SKIP_COUNT];
738
739 TAILQ_ENTRY(pf_keth_rule) entries;
740
741 struct pf_keth_anchor *anchor;
742 u_int8_t anchor_relative;
743 u_int8_t anchor_wildcard;
744
745 uint32_t nr;
746
747 bool quick;
748
749 /* Filter */
750 char ifname[IFNAMSIZ];
751 struct pfi_kkif *kif;
752 bool ifnot;
753 uint8_t direction;
754 uint16_t proto;
755 struct pf_keth_rule_addr src, dst;
756 struct pf_rule_addr ipsrc, ipdst;
757 char match_tagname[PF_TAG_NAME_SIZE];
758 uint16_t match_tag;
759 bool match_tag_not;
760
761
762 /* Stats */
763 counter_u64_t evaluations;
764 counter_u64_t packets[2];
765 counter_u64_t bytes[2];
766 time_t *timestamp;
767
768 /* Action */
769 char qname[PF_QNAME_SIZE];
770 int qid;
771 char tagname[PF_TAG_NAME_SIZE];
772 uint16_t tag;
773 char bridge_to_name[IFNAMSIZ];
774 struct pfi_kkif *bridge_to;
775 uint8_t action;
776 uint16_t dnpipe;
777 uint32_t dnflags;
778
779 char label[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE];
780 uint32_t ridentifier;
781 };
782
783 struct pf_kthreshold {
784 uint32_t limit;
785 uint32_t seconds;
786 struct counter_rate *cr;
787 };
788
789 RB_HEAD(pf_krule_global, pf_krule);
790 RB_PROTOTYPE(pf_krule_global, pf_krule, entry_global, pf_krule_compare);
791
792 struct pf_krule {
793 struct pf_rule_addr src;
794 struct pf_rule_addr dst;
795 struct pf_krule *skip[PF_SKIP_COUNT];
796 char label[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE];
797 uint32_t ridentifier;
798 char ifname[IFNAMSIZ];
799 char rcv_ifname[IFNAMSIZ];
800 char qname[PF_QNAME_SIZE];
801 char pqname[PF_QNAME_SIZE];
802 char tagname[PF_TAG_NAME_SIZE];
803 char match_tagname[PF_TAG_NAME_SIZE];
804
805 char overload_tblname[PF_TABLE_NAME_SIZE];
806
807 TAILQ_ENTRY(pf_krule) entries;
808 struct pf_kpool nat;
809 struct pf_kpool rdr;
810 struct pf_kpool route;
811 struct pf_kthreshold pktrate;
812
813 struct pf_counter_u64 evaluations;
814 struct pf_counter_u64 packets[2];
815 struct pf_counter_u64 bytes[2];
816 time_t *timestamp;
817
818 struct pfi_kkif *kif;
819 struct pfi_kkif *rcv_kif;
820 struct pf_kanchor *anchor;
821 struct pfr_ktable *overload_tbl;
822
823 pf_osfp_t os_fingerprint;
824
825 int32_t rtableid;
826 u_int32_t timeout[PFTM_MAX];
827 u_int32_t max_states;
828 u_int32_t max_src_nodes;
829 u_int32_t max_src_states;
830 u_int32_t max_src_conn;
831 struct {
832 u_int32_t limit;
833 u_int32_t seconds;
834 } max_src_conn_rate;
835 uint16_t max_pkt_size;
836 u_int16_t qid;
837 u_int16_t pqid;
838 u_int16_t dnpipe;
839 u_int16_t dnrpipe;
840 u_int32_t free_flags;
841 u_int32_t nr;
842 u_int32_t prob;
843 uid_t cuid;
844 pid_t cpid;
845
846 counter_u64_t states_cur;
847 counter_u64_t states_tot;
848 counter_u64_t src_nodes[PF_SN_MAX];
849
850 u_int16_t return_icmp;
851 u_int16_t return_icmp6;
852 u_int16_t max_mss;
853 u_int16_t tag;
854 u_int16_t match_tag;
855 u_int16_t scrub_flags;
856
857 struct pf_rule_uid uid;
858 struct pf_rule_gid gid;
859
860 u_int32_t rule_flag;
861 uint32_t rule_ref;
862 u_int8_t action;
863 u_int8_t direction;
864 u_int8_t log;
865 u_int8_t logif;
866 u_int8_t quick;
867 u_int8_t ifnot;
868 u_int8_t match_tag_not;
869 u_int8_t natpass;
870
871 u_int8_t keep_state;
872 sa_family_t af;
873 u_int8_t proto;
874 uint16_t type;
875 uint16_t code;
876 u_int8_t flags;
877 u_int8_t flagset;
878 u_int8_t min_ttl;
879 u_int8_t allow_opts;
880 u_int8_t rt;
881 u_int8_t return_ttl;
882 u_int8_t tos;
883 u_int8_t set_tos;
884 u_int8_t anchor_relative;
885 u_int8_t anchor_wildcard;
886
887 u_int8_t flush;
888 u_int8_t prio;
889 u_int8_t set_prio[2];
890 sa_family_t naf;
891 u_int8_t rcvifnot;
892
893 struct {
894 struct pf_addr addr;
895 u_int16_t port;
896 } divert;
897 u_int8_t md5sum[PF_MD5_DIGEST_LENGTH];
898 RB_ENTRY(pf_krule) entry_global;
899
900 #ifdef PF_WANT_32_TO_64_COUNTER
901 LIST_ENTRY(pf_krule) allrulelist;
902 bool allrulelinked;
903 #endif
904 time_t exptime;
905 };
906
907 struct pf_krule_item {
908 SLIST_ENTRY(pf_krule_item) entry;
909 struct pf_krule *r;
910 };
911
912 SLIST_HEAD(pf_krule_slist, pf_krule_item);
913
914 struct pf_ksrc_node {
915 LIST_ENTRY(pf_ksrc_node) entry;
916 struct pf_addr addr;
917 struct pf_addr raddr;
918 struct pf_krule_slist match_rules;
919 struct pf_krule *rule;
920 struct pfi_kkif *rkif;
921 counter_u64_t bytes[2];
922 counter_u64_t packets[2];
923 u_int32_t states;
924 u_int32_t conn;
925 struct pf_kthreshold conn_rate;
926 u_int32_t creation;
927 u_int32_t expire;
928 sa_family_t af;
929 sa_family_t raf;
930 u_int8_t ruletype;
931 pf_sn_types_t type;
932 struct mtx *lock;
933 };
934 #endif
935
936 struct pf_state_scrub {
937 struct timeval pfss_last; /* time received last packet */
938 u_int32_t pfss_tsecr; /* last echoed timestamp */
939 u_int32_t pfss_tsval; /* largest timestamp */
940 u_int32_t pfss_tsval0; /* original timestamp */
941 u_int16_t pfss_flags;
942 #define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */
943 #define PFSS_PAWS 0x0010 /* stricter PAWS checks */
944 #define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */
945 #define PFSS_DATA_TS 0x0040 /* timestamp on data packets */
946 #define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */
947 u_int8_t pfss_ttl; /* stashed TTL */
948 u_int8_t pad;
949 union {
950 u_int32_t pfss_ts_mod; /* timestamp modulation */
951 u_int32_t pfss_v_tag; /* SCTP verification tag */
952 };
953 };
954
955 struct pf_state_host {
956 struct pf_addr addr;
957 u_int16_t port;
958 u_int16_t pad;
959 };
960
961 struct pf_state_peer {
962 struct pf_state_scrub *scrub; /* state is scrubbed */
963 u_int32_t seqlo; /* Max sequence number sent */
964 u_int32_t seqhi; /* Max the other end ACKd + win */
965 u_int32_t seqdiff; /* Sequence number modulator */
966 u_int16_t max_win; /* largest window (pre scaling) */
967 u_int16_t mss; /* Maximum segment size option */
968 u_int8_t state; /* active state level */
969 u_int8_t wscale; /* window scaling factor */
970 u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */
971 u_int8_t pad[1];
972 };
973
974 /* Keep synced with struct pf_udp_endpoint. */
975 struct pf_udp_endpoint_cmp {
976 struct pf_addr addr;
977 uint16_t port;
978 sa_family_t af;
979 uint8_t pad[1];
980 };
981
982 struct pf_udp_endpoint {
983 struct pf_addr addr;
984 uint16_t port;
985 sa_family_t af;
986 uint8_t pad[1];
987
988 struct pf_udp_mapping *mapping;
989 LIST_ENTRY(pf_udp_endpoint) entry;
990 };
991
992 struct pf_udp_mapping {
993 struct pf_udp_endpoint endpoints[2];
994 u_int refs;
995 };
996
997 /* Keep synced with struct pf_state_key. */
998 struct pf_state_key_cmp {
999 struct pf_addr addr[2];
1000 u_int16_t port[2];
1001 sa_family_t af;
1002 u_int8_t proto;
1003 u_int8_t pad[2];
1004 };
1005
1006 struct pf_state_key {
1007 struct pf_addr addr[2];
1008 u_int16_t port[2];
1009 sa_family_t af;
1010 u_int8_t proto;
1011 u_int8_t pad[2];
1012
1013 LIST_ENTRY(pf_state_key) entry;
1014 TAILQ_HEAD(, pf_kstate) states[2];
1015 };
1016
1017 #define PF_REVERSED_KEY(state, family) \
1018 (((state)->key[PF_SK_WIRE]->af != (state)->key[PF_SK_STACK]->af) && \
1019 ((state)->key[PF_SK_WIRE]->af != (family)) && \
1020 ((state)->direction == PF_IN))
1021
1022 /* Keep synced with struct pf_kstate. */
1023 struct pf_state_cmp {
1024 u_int64_t id;
1025 u_int32_t creatorid;
1026 u_int8_t direction;
1027 u_int8_t pad[3];
1028 };
1029
1030 struct pf_state_scrub_export {
1031 uint16_t pfss_flags;
1032 uint8_t pfss_ttl; /* stashed TTL */
1033 #define PF_SCRUB_FLAG_VALID 0x01
1034 uint8_t scrub_flag;
1035 uint32_t pfss_ts_mod; /* timestamp modulation */
1036 } __packed;
1037
1038 struct pf_state_key_export {
1039 struct pf_addr addr[2];
1040 uint16_t port[2];
1041 };
1042
1043 struct pf_state_peer_export {
1044 struct pf_state_scrub_export scrub; /* state is scrubbed */
1045 uint32_t seqlo; /* Max sequence number sent */
1046 uint32_t seqhi; /* Max the other end ACKd + win */
1047 uint32_t seqdiff; /* Sequence number modulator */
1048 uint16_t max_win; /* largest window (pre scaling) */
1049 uint16_t mss; /* Maximum segment size option */
1050 uint8_t state; /* active state level */
1051 uint8_t wscale; /* window scaling factor */
1052 uint8_t dummy[6];
1053 } __packed;
1054 _Static_assert(sizeof(struct pf_state_peer_export) == 32, "size incorrect");
1055
1056 struct pf_state_export {
1057 uint64_t version;
1058 #define PF_STATE_VERSION 20230404
1059 uint64_t id;
1060 char ifname[IFNAMSIZ];
1061 char orig_ifname[IFNAMSIZ];
1062 struct pf_state_key_export key[2];
1063 struct pf_state_peer_export src;
1064 struct pf_state_peer_export dst;
1065 struct pf_addr rt_addr;
1066 uint32_t rule;
1067 uint32_t anchor;
1068 uint32_t nat_rule;
1069 uint32_t creation;
1070 uint32_t expire;
1071 uint32_t spare0;
1072 uint64_t packets[2];
1073 uint64_t bytes[2];
1074 uint32_t creatorid;
1075 uint32_t spare1;
1076 sa_family_t af;
1077 uint8_t proto;
1078 uint8_t direction;
1079 uint8_t log;
1080 uint8_t state_flags_compat;
1081 uint8_t timeout;
1082 uint8_t sync_flags;
1083 uint8_t updates;
1084 uint16_t state_flags;
1085 uint16_t qid;
1086 uint16_t pqid;
1087 uint16_t dnpipe;
1088 uint16_t dnrpipe;
1089 int32_t rtableid;
1090 uint8_t min_ttl;
1091 uint8_t set_tos;
1092 uint16_t max_mss;
1093 uint8_t set_prio[2];
1094 uint8_t rt;
1095 char rt_ifname[IFNAMSIZ];
1096
1097 uint8_t spare[72];
1098 };
1099 _Static_assert(sizeof(struct pf_state_export) == 384, "size incorrect");
1100
1101 #ifdef _KERNEL
1102 struct pf_kstate {
1103 /*
1104 * Area shared with pf_state_cmp
1105 */
1106 u_int64_t id;
1107 u_int32_t creatorid;
1108 u_int8_t direction;
1109 u_int8_t pad[3];
1110 /*
1111 * end of the area
1112 */
1113
1114 u_int16_t state_flags;
1115 u_int8_t timeout;
1116 u_int8_t sync_state; /* PFSYNC_S_x */
1117 u_int8_t sync_updates;
1118 u_int refs;
1119 struct mtx *lock;
1120 TAILQ_ENTRY(pf_kstate) sync_list;
1121 TAILQ_ENTRY(pf_kstate) key_list[2];
1122 LIST_ENTRY(pf_kstate) entry;
1123 struct pf_state_peer src;
1124 struct pf_state_peer dst;
1125 struct pf_krule_slist match_rules;
1126 struct pf_krule *rule;
1127 struct pf_krule *anchor;
1128 struct pf_krule *nat_rule;
1129 struct pf_state_key *key[2]; /* addresses stack and wire */
1130 struct pf_udp_mapping *udp_mapping;
1131 struct pfi_kkif *kif;
1132 struct pfi_kkif *orig_kif; /* The real kif, even if we're a floating state (i.e. if == V_pfi_all). */
1133 struct pf_ksrc_node *sns[PF_SN_MAX];/* source nodes */
1134 u_int64_t packets[2];
1135 u_int64_t bytes[2];
1136 u_int64_t creation;
1137 u_int64_t expire;
1138 u_int32_t pfsync_time;
1139 struct pf_rule_actions act;
1140 u_int16_t tag;
1141 u_int16_t if_index_in;
1142 u_int16_t if_index_out;
1143 };
1144
1145 /*
1146 * 6 cache lines per struct, 10 structs per page.
1147 * Try to not grow the struct beyond that.
1148 */
1149 _Static_assert(sizeof(struct pf_kstate) <= 384, "pf_kstate size crosses 384 bytes");
1150
1151 enum pf_test_status {
1152 PF_TEST_FAIL = -1,
1153 PF_TEST_OK,
1154 PF_TEST_QUICK
1155 };
1156
1157 struct pf_test_ctx {
1158 enum pf_test_status test_status;
1159 struct pf_pdesc *pd;
1160 struct pf_rule_actions act;
1161 uint8_t icmpcode;
1162 uint8_t icmptype;
1163 int icmp_dir;
1164 int state_icmp;
1165 int tag;
1166 int rewrite;
1167 u_short reason;
1168 struct pf_src_node *sns[PF_SN_MAX];
1169 struct pf_krule *nr;
1170 struct pf_krule *tr;
1171 struct pf_krule **rm;
1172 struct pf_krule *a;
1173 struct pf_krule **am;
1174 struct pf_kruleset **rsm;
1175 struct pf_kruleset *arsm;
1176 struct pf_kruleset *aruleset;
1177 struct pf_state_key *sk;
1178 struct pf_state_key *nk;
1179 struct tcphdr *th;
1180 struct pf_udp_mapping *udp_mapping;
1181 struct pf_kpool *nat_pool;
1182 uint16_t virtual_type;
1183 uint16_t virtual_id;
1184 int depth;
1185 };
1186
1187 #define PF_ANCHOR_STACK_MAX 32
1188 #endif
1189
1190 /*
1191 * Unified state structures for pulling states out of the kernel
1192 * used by pfsync(4) and the pf(4) ioctl.
1193 */
1194 struct pfsync_state_key {
1195 struct pf_addr addr[2];
1196 u_int16_t port[2];
1197 };
1198
1199 struct pfsync_state_1301 {
1200 u_int64_t id;
1201 char ifname[IFNAMSIZ];
1202 struct pfsync_state_key key[2];
1203 struct pf_state_peer_export src;
1204 struct pf_state_peer_export dst;
1205 struct pf_addr rt_addr;
1206 u_int32_t rule;
1207 u_int32_t anchor;
1208 u_int32_t nat_rule;
1209 u_int32_t creation;
1210 u_int32_t expire;
1211 u_int32_t packets[2][2];
1212 u_int32_t bytes[2][2];
1213 u_int32_t creatorid;
1214 sa_family_t af;
1215 u_int8_t proto;
1216 u_int8_t direction;
1217 u_int8_t __spare[2];
1218 u_int8_t log;
1219 u_int8_t state_flags;
1220 u_int8_t timeout;
1221 u_int8_t sync_flags;
1222 u_int8_t updates; /* unused */
1223 } __packed;
1224
1225 struct pfsync_state_1400 {
1226 /* The beginning of the struct is compatible with pfsync_state_1301 */
1227 u_int64_t id;
1228 char ifname[IFNAMSIZ];
1229 struct pfsync_state_key key[2];
1230 struct pf_state_peer_export src;
1231 struct pf_state_peer_export dst;
1232 struct pf_addr rt_addr;
1233 u_int32_t rule;
1234 u_int32_t anchor;
1235 u_int32_t nat_rule;
1236 u_int32_t creation;
1237 u_int32_t expire;
1238 u_int32_t packets[2][2];
1239 u_int32_t bytes[2][2];
1240 u_int32_t creatorid;
1241 sa_family_t af;
1242 u_int8_t proto;
1243 u_int8_t direction;
1244 u_int16_t state_flags;
1245 u_int8_t log;
1246 u_int8_t __spare;
1247 u_int8_t timeout;
1248 u_int8_t sync_flags;
1249 u_int8_t updates; /* unused */
1250 /* The rest is not */
1251 u_int16_t qid;
1252 u_int16_t pqid;
1253 u_int16_t dnpipe;
1254 u_int16_t dnrpipe;
1255 int32_t rtableid;
1256 u_int8_t min_ttl;
1257 u_int8_t set_tos;
1258 u_int16_t max_mss;
1259 u_int8_t set_prio[2];
1260 u_int8_t rt;
1261 char rt_ifname[IFNAMSIZ];
1262 } __packed;
1263
1264 struct pfsync_state_1500 {
1265 /* The beginning of the struct is compatible with pfsync_state_1301 */
1266 u_int64_t id;
1267 char ifname[IFNAMSIZ];
1268 struct pfsync_state_key key[2];
1269 struct pf_state_peer_export src;
1270 struct pf_state_peer_export dst;
1271 struct pf_addr rt_addr;
1272 u_int32_t rule;
1273 u_int32_t anchor;
1274 u_int32_t nat_rule;
1275 u_int32_t creation;
1276 u_int32_t expire;
1277 u_int32_t packets[2][2];
1278 u_int32_t bytes[2][2];
1279 u_int32_t creatorid;
1280 /* The rest is not, use the opportunity to fix alignment */
1281 char tagname[PF_TAG_NAME_SIZE];
1282 char rt_ifname[IFNAMSIZ];
1283 char orig_ifname[IFNAMSIZ];
1284 int32_t rtableid;
1285 u_int16_t state_flags;
1286 u_int16_t qid;
1287 u_int16_t pqid;
1288 u_int16_t dnpipe;
1289 u_int16_t dnrpipe;
1290 u_int16_t max_mss;
1291 sa_family_t wire_af;
1292 sa_family_t stack_af;
1293 sa_family_t rt_af;
1294 u_int8_t wire_proto;
1295 u_int8_t stack_proto;
1296 u_int8_t log;
1297 u_int8_t timeout;
1298 u_int8_t direction;
1299 u_int8_t rt;
1300 u_int8_t min_ttl;
1301 u_int8_t set_tos;
1302 u_int8_t set_prio[2];
1303 u_int8_t spare[3]; /* Improve struct alignment */
1304 } __packed;
1305
1306 union pfsync_state_union {
1307 struct pfsync_state_1301 pfs_1301;
1308 struct pfsync_state_1400 pfs_1400;
1309 struct pfsync_state_1500 pfs_1500;
1310 } __packed;
1311
1312 #ifdef _KERNEL
1313 /* pfsync */
1314 typedef int pfsync_state_import_t(union pfsync_state_union *, int, int);
1315 typedef void pfsync_insert_state_t(struct pf_kstate *);
1316 typedef void pfsync_update_state_t(struct pf_kstate *);
1317 typedef void pfsync_delete_state_t(struct pf_kstate *);
1318 typedef void pfsync_clear_states_t(u_int32_t, const char *);
1319 typedef int pfsync_defer_t(struct pf_kstate *, struct mbuf *);
1320 typedef void pfsync_detach_ifnet_t(struct ifnet *);
1321 typedef void pflow_export_state_t(const struct pf_kstate *);
1322 typedef bool pf_addr_filter_func_t(const sa_family_t, const struct pf_addr *);
1323
1324 VNET_DECLARE(pfsync_state_import_t *, pfsync_state_import_ptr);
1325 #define V_pfsync_state_import_ptr VNET(pfsync_state_import_ptr)
1326 VNET_DECLARE(pfsync_insert_state_t *, pfsync_insert_state_ptr);
1327 #define V_pfsync_insert_state_ptr VNET(pfsync_insert_state_ptr)
1328 VNET_DECLARE(pfsync_update_state_t *, pfsync_update_state_ptr);
1329 #define V_pfsync_update_state_ptr VNET(pfsync_update_state_ptr)
1330 VNET_DECLARE(pfsync_delete_state_t *, pfsync_delete_state_ptr);
1331 #define V_pfsync_delete_state_ptr VNET(pfsync_delete_state_ptr)
1332 VNET_DECLARE(pfsync_clear_states_t *, pfsync_clear_states_ptr);
1333 #define V_pfsync_clear_states_ptr VNET(pfsync_clear_states_ptr)
1334 VNET_DECLARE(pfsync_defer_t *, pfsync_defer_ptr);
1335 #define V_pfsync_defer_ptr VNET(pfsync_defer_ptr)
1336 VNET_DECLARE(pflow_export_state_t *, pflow_export_state_ptr);
1337 #define V_pflow_export_state_ptr VNET(pflow_export_state_ptr)
1338 extern pfsync_detach_ifnet_t *pfsync_detach_ifnet_ptr;
1339
1340 void pfsync_state_export(union pfsync_state_union *,
1341 struct pf_kstate *, int);
1342 void pf_state_export(struct pf_state_export *,
1343 struct pf_kstate *);
1344
1345 /* pflog */
1346 struct pf_kruleset;
1347 struct pf_pdesc;
1348 typedef int pflog_packet_t(uint8_t, u_int8_t,
1349 struct pf_krule *, struct pf_krule *, struct pf_kruleset *,
1350 struct pf_pdesc *, int, struct pf_krule *);
1351 extern pflog_packet_t *pflog_packet_ptr;
1352
1353 #endif /* _KERNEL */
1354
1355 #define PFSYNC_FLAG_SRCNODE 0x04
1356 #define PFSYNC_FLAG_NATSRCNODE 0x08
1357
1358 /* for copies to/from network byte order */
1359 /* ioctl interface also uses network byte order */
1360 void pf_state_peer_hton(const struct pf_state_peer *,
1361 struct pf_state_peer_export *);
1362 void pf_state_peer_ntoh(const struct pf_state_peer_export *,
1363 struct pf_state_peer *);
1364
1365 #define pf_state_counter_hton(s,d) do { \
1366 d[0] = htonl((s>>32)&0xffffffff); \
1367 d[1] = htonl(s&0xffffffff); \
1368 } while (0)
1369
1370 #define pf_state_counter_from_pfsync(s) \
1371 (((u_int64_t)(s[0])<<32) | (u_int64_t)(s[1]))
1372
1373 #define pf_state_counter_ntoh(s,d) do { \
1374 d = ntohl(s[0]); \
1375 d = d<<32; \
1376 d += ntohl(s[1]); \
1377 } while (0)
1378
1379 TAILQ_HEAD(pf_krulequeue, pf_krule);
1380
1381 struct pf_kanchor;
1382
1383 struct pf_kruleset {
1384 struct {
1385 struct pf_krulequeue queues[2];
1386 struct {
1387 struct pf_krulequeue *ptr;
1388 u_int32_t rcount;
1389 u_int32_t ticket;
1390 int open;
1391 struct pf_krule_global *tree;
1392 } active, inactive;
1393 } rules[PF_RULESET_MAX];
1394 struct pf_kanchor *anchor;
1395 u_int32_t tticket;
1396 int tables;
1397 int topen;
1398 };
1399
1400 RB_HEAD(pf_kanchor_global, pf_kanchor);
1401 RB_HEAD(pf_kanchor_node, pf_kanchor);
1402 struct pf_kanchor {
1403 RB_ENTRY(pf_kanchor) entry_global;
1404 RB_ENTRY(pf_kanchor) entry_node;
1405 struct pf_kanchor *parent;
1406 struct pf_kanchor_node children;
1407 char name[PF_ANCHOR_NAME_SIZE];
1408 char path[MAXPATHLEN];
1409 struct pf_kruleset ruleset;
1410 int refcnt; /* anchor rules */
1411 };
1412 RB_PROTOTYPE(pf_kanchor_global, pf_kanchor, entry_global, pf_anchor_compare);
1413 RB_PROTOTYPE(pf_kanchor_node, pf_kanchor, entry_node, pf_kanchor_compare);
1414
1415 #define PF_RESERVED_ANCHOR "_pf"
1416
1417 #define PFR_TFLAG_PERSIST 0x00000001
1418 #define PFR_TFLAG_CONST 0x00000002
1419 #define PFR_TFLAG_ACTIVE 0x00000004
1420 #define PFR_TFLAG_INACTIVE 0x00000008
1421 #define PFR_TFLAG_REFERENCED 0x00000010
1422 #define PFR_TFLAG_REFDANCHOR 0x00000020
1423 #define PFR_TFLAG_COUNTERS 0x00000040
1424 /* Adjust masks below when adding flags. */
1425 #define PFR_TFLAG_USRMASK (PFR_TFLAG_PERSIST | \
1426 PFR_TFLAG_CONST | \
1427 PFR_TFLAG_COUNTERS)
1428 #define PFR_TFLAG_SETMASK (PFR_TFLAG_ACTIVE | \
1429 PFR_TFLAG_INACTIVE | \
1430 PFR_TFLAG_REFERENCED | \
1431 PFR_TFLAG_REFDANCHOR)
1432 #define PFR_TFLAG_ALLMASK (PFR_TFLAG_PERSIST | \
1433 PFR_TFLAG_CONST | \
1434 PFR_TFLAG_ACTIVE | \
1435 PFR_TFLAG_INACTIVE | \
1436 PFR_TFLAG_REFERENCED | \
1437 PFR_TFLAG_REFDANCHOR | \
1438 PFR_TFLAG_COUNTERS)
1439
1440 struct pf_keth_anchor_stackframe;
1441
1442 struct pfr_table {
1443 char pfrt_anchor[MAXPATHLEN];
1444 char pfrt_name[PF_TABLE_NAME_SIZE];
1445 u_int32_t pfrt_flags;
1446 u_int8_t pfrt_fback;
1447 };
1448
1449 enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED,
1450 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE,
1451 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_NOCOUNT, PFR_FB_MAX };
1452
1453 struct pfr_addr {
1454 union {
1455 struct in_addr _pfra_ip4addr;
1456 struct in6_addr _pfra_ip6addr;
1457 } pfra_u;
1458 u_int8_t pfra_af;
1459 u_int8_t pfra_net;
1460 u_int8_t pfra_not;
1461 u_int8_t pfra_fback;
1462 };
1463 #define pfra_ip4addr pfra_u._pfra_ip4addr
1464 #define pfra_ip6addr pfra_u._pfra_ip6addr
1465
1466 enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX };
1467 enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX };
1468 enum { PFR_TYPE_PACKETS, PFR_TYPE_BYTES, PFR_TYPE_MAX };
1469 #define PFR_NUM_COUNTERS (PFR_DIR_MAX * PFR_OP_ADDR_MAX * PFR_TYPE_MAX)
1470 #define PFR_OP_XPASS PFR_OP_ADDR_MAX
1471
1472 struct pfr_astats {
1473 struct pfr_addr pfras_a;
1474 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
1475 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
1476 time_t pfras_tzero;
1477 };
1478
1479 enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX };
1480
1481 struct pfr_tstats {
1482 struct pfr_table pfrts_t;
1483 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
1484 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
1485 u_int64_t pfrts_match;
1486 u_int64_t pfrts_nomatch;
1487 time_t pfrts_tzero;
1488 int pfrts_cnt;
1489 int pfrts_refcnt[PFR_REFCNT_MAX];
1490 };
1491
1492 #ifdef _KERNEL
1493
1494 struct pfr_kstate_counter {
1495 counter_u64_t pkc_pcpu;
1496 u_int64_t pkc_zero;
1497 };
1498
1499 static inline int
pfr_kstate_counter_init(struct pfr_kstate_counter * pfrc,int flags)1500 pfr_kstate_counter_init(struct pfr_kstate_counter *pfrc, int flags)
1501 {
1502
1503 pfrc->pkc_zero = 0;
1504 pfrc->pkc_pcpu = counter_u64_alloc(flags);
1505 if (pfrc->pkc_pcpu == NULL)
1506 return (ENOMEM);
1507 return (0);
1508 }
1509
1510 static inline void
pfr_kstate_counter_deinit(struct pfr_kstate_counter * pfrc)1511 pfr_kstate_counter_deinit(struct pfr_kstate_counter *pfrc)
1512 {
1513
1514 counter_u64_free(pfrc->pkc_pcpu);
1515 }
1516
1517 static inline u_int64_t
pfr_kstate_counter_fetch(struct pfr_kstate_counter * pfrc)1518 pfr_kstate_counter_fetch(struct pfr_kstate_counter *pfrc)
1519 {
1520 u_int64_t c;
1521
1522 c = counter_u64_fetch(pfrc->pkc_pcpu);
1523 c -= pfrc->pkc_zero;
1524 return (c);
1525 }
1526
1527 static inline void
pfr_kstate_counter_zero(struct pfr_kstate_counter * pfrc)1528 pfr_kstate_counter_zero(struct pfr_kstate_counter *pfrc)
1529 {
1530 u_int64_t c;
1531
1532 c = counter_u64_fetch(pfrc->pkc_pcpu);
1533 pfrc->pkc_zero = c;
1534 }
1535
1536 static inline void
pfr_kstate_counter_add(struct pfr_kstate_counter * pfrc,int64_t n)1537 pfr_kstate_counter_add(struct pfr_kstate_counter *pfrc, int64_t n)
1538 {
1539
1540 counter_u64_add(pfrc->pkc_pcpu, n);
1541 }
1542
1543 struct pfr_ktstats {
1544 struct pfr_table pfrts_t;
1545 struct pfr_kstate_counter pfrkts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
1546 struct pfr_kstate_counter pfrkts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
1547 struct pfr_kstate_counter pfrkts_match;
1548 struct pfr_kstate_counter pfrkts_nomatch;
1549 time_t pfrkts_tzero;
1550 int pfrkts_cnt;
1551 int pfrkts_refcnt[PFR_REFCNT_MAX];
1552 };
1553
1554 #endif /* _KERNEL */
1555
1556 #define pfrts_name pfrts_t.pfrt_name
1557 #define pfrts_flags pfrts_t.pfrt_flags
1558
1559 #ifndef _SOCKADDR_UNION_DEFINED
1560 #define _SOCKADDR_UNION_DEFINED
1561 union sockaddr_union {
1562 struct sockaddr sa;
1563 struct sockaddr_in sin;
1564 struct sockaddr_in6 sin6;
1565 };
1566 #endif /* _SOCKADDR_UNION_DEFINED */
1567
1568 struct pfr_kcounters {
1569 counter_u64_t pfrkc_counters;
1570 time_t pfrkc_tzero;
1571 };
1572 #define pfr_kentry_counter(kc, dir, op, t) \
1573 ((kc)->pfrkc_counters + \
1574 (dir) * PFR_OP_ADDR_MAX * PFR_TYPE_MAX + (op) * PFR_TYPE_MAX + (t))
1575
1576 #ifdef _KERNEL
1577 SLIST_HEAD(pfr_kentryworkq, pfr_kentry);
1578 struct pfr_kentry {
1579 struct radix_node pfrke_node[2];
1580 union sockaddr_union pfrke_sa;
1581 SLIST_ENTRY(pfr_kentry) pfrke_workq;
1582 struct pfr_kcounters pfrke_counters;
1583 u_int8_t pfrke_af;
1584 u_int8_t pfrke_net;
1585 u_int8_t pfrke_not;
1586 u_int8_t pfrke_mark;
1587 };
1588
1589 SLIST_HEAD(pfr_ktableworkq, pfr_ktable);
1590 RB_HEAD(pfr_ktablehead, pfr_ktable);
1591 struct pfr_ktable {
1592 struct pfr_ktstats pfrkt_kts;
1593 RB_ENTRY(pfr_ktable) pfrkt_tree;
1594 SLIST_ENTRY(pfr_ktable) pfrkt_workq;
1595 struct radix_node_head *pfrkt_ip4;
1596 struct radix_node_head *pfrkt_ip6;
1597 struct pfr_ktable *pfrkt_shadow;
1598 struct pfr_ktable *pfrkt_root;
1599 struct pf_kruleset *pfrkt_rs;
1600 long pfrkt_larg;
1601 int pfrkt_nflags;
1602 };
1603 #define pfrkt_t pfrkt_kts.pfrts_t
1604 #define pfrkt_name pfrkt_t.pfrt_name
1605 #define pfrkt_anchor pfrkt_t.pfrt_anchor
1606 #define pfrkt_ruleset pfrkt_t.pfrt_ruleset
1607 #define pfrkt_flags pfrkt_t.pfrt_flags
1608 #define pfrkt_cnt pfrkt_kts.pfrkts_cnt
1609 #define pfrkt_refcnt pfrkt_kts.pfrkts_refcnt
1610 #define pfrkt_packets pfrkt_kts.pfrkts_packets
1611 #define pfrkt_bytes pfrkt_kts.pfrkts_bytes
1612 #define pfrkt_match pfrkt_kts.pfrkts_match
1613 #define pfrkt_nomatch pfrkt_kts.pfrkts_nomatch
1614 #define pfrkt_tzero pfrkt_kts.pfrkts_tzero
1615 #endif
1616
1617 #ifdef _KERNEL
1618 struct pfi_kkif {
1619 char pfik_name[IFNAMSIZ];
1620 union {
1621 RB_ENTRY(pfi_kkif) _pfik_tree;
1622 LIST_ENTRY(pfi_kkif) _pfik_list;
1623 } _pfik_glue;
1624 #define pfik_tree _pfik_glue._pfik_tree
1625 #define pfik_list _pfik_glue._pfik_list
1626 struct pf_counter_u64 pfik_packets[2][2][2];
1627 struct pf_counter_u64 pfik_bytes[2][2][2];
1628 time_t pfik_tzero;
1629 u_int pfik_flags;
1630 struct ifnet *pfik_ifp;
1631 struct ifg_group *pfik_group;
1632 u_int pfik_rulerefs;
1633 TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs;
1634 #ifdef PF_WANT_32_TO_64_COUNTER
1635 LIST_ENTRY(pfi_kkif) pfik_allkiflist;
1636 #endif
1637 };
1638 #endif
1639
1640 #define PFI_IFLAG_REFS 0x0001 /* has state references */
1641 #define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */
1642 #define PFI_IFLAG_ANY 0x0200 /* match any non-loopback interface */
1643
1644 #ifdef _KERNEL
1645 struct pf_sctp_multihome_job;
1646 TAILQ_HEAD(pf_sctp_multihome_jobs, pf_sctp_multihome_job);
1647
1648 struct pf_pdesc {
1649 struct {
1650 int done;
1651 uid_t uid;
1652 gid_t gid;
1653 } lookup;
1654 u_int64_t tot_len; /* Make Mickey money */
1655 union pf_headers {
1656 struct tcphdr tcp;
1657 struct udphdr udp;
1658 struct sctphdr sctp;
1659 struct icmp icmp;
1660 #ifdef INET6
1661 struct icmp6_hdr icmp6;
1662 #endif /* INET6 */
1663 char any[0];
1664 } hdr;
1665
1666 struct pf_addr nsaddr; /* src address after NAT */
1667 struct pf_addr ndaddr; /* dst address after NAT */
1668
1669 struct pfi_kkif *kif; /* incomming interface */
1670 struct mbuf *m;
1671
1672 struct pf_addr *src; /* src address */
1673 struct pf_addr *dst; /* dst address */
1674 struct pf_addr osrc;
1675 struct pf_addr odst;
1676 u_int16_t *pcksum; /* proto cksum */
1677 u_int16_t *sport;
1678 u_int16_t *dport;
1679 u_int16_t osport;
1680 u_int16_t odport;
1681 u_int16_t nsport; /* src port after NAT */
1682 u_int16_t ndport; /* dst port after NAT */
1683 struct pf_mtag *pf_mtag;
1684 struct pf_rule_actions act;
1685
1686 u_int32_t off; /* protocol header offset */
1687 bool df; /* IPv4 Don't fragment flag. */
1688 u_int32_t hdrlen; /* protocol header length */
1689 u_int32_t p_len; /* total length of protocol payload */
1690 u_int32_t extoff; /* extentsion header offset */
1691 u_int32_t fragoff; /* fragment header offset */
1692 u_int32_t jumbolen; /* length from v6 jumbo header */
1693 u_int32_t badopts; /* v4 options or v6 routing headers */
1694 #define PF_OPT_OTHER 0x0001
1695 #define PF_OPT_JUMBO 0x0002
1696 #define PF_OPT_ROUTER_ALERT 0x0004
1697
1698 u_int16_t *ip_sum;
1699 u_int16_t flags; /* Let SCRUB trigger behavior in
1700 * state code. Easier than tags */
1701 #define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */
1702 u_int16_t virtual_proto;
1703 #define PF_VPROTO_FRAGMENT 256
1704 sa_family_t af;
1705 sa_family_t naf;
1706 u_int8_t proto;
1707 u_int8_t tos;
1708 u_int8_t ttl;
1709 u_int8_t dir; /* direction */
1710 u_int8_t sidx; /* key index for source */
1711 u_int8_t didx; /* key index for destination */
1712 #define PFDESC_SCTP_INIT 0x0001
1713 #define PFDESC_SCTP_INIT_ACK 0x0002
1714 #define PFDESC_SCTP_COOKIE 0x0004
1715 #define PFDESC_SCTP_COOKIE_ACK 0x0008
1716 #define PFDESC_SCTP_ABORT 0x0010
1717 #define PFDESC_SCTP_SHUTDOWN 0x0020
1718 #define PFDESC_SCTP_SHUTDOWN_COMPLETE 0x0040
1719 #define PFDESC_SCTP_DATA 0x0080
1720 #define PFDESC_SCTP_ASCONF 0x0100
1721 #define PFDESC_SCTP_HEARTBEAT 0x0200
1722 #define PFDESC_SCTP_HEARTBEAT_ACK 0x0400
1723 #define PFDESC_SCTP_OTHER 0x0800
1724 #define PFDESC_SCTP_ADD_IP 0x1000
1725 u_int16_t sctp_flags;
1726 u_int32_t sctp_initiate_tag;
1727 u_int16_t sctp_dummy_sum;
1728 struct pf_krule *related_rule;
1729
1730 struct pf_sctp_multihome_jobs sctp_multihome_jobs;
1731 };
1732
1733 struct pf_sctp_multihome_job {
1734 TAILQ_ENTRY(pf_sctp_multihome_job) next;
1735 struct pf_pdesc pd;
1736 struct pf_addr src;
1737 struct pf_addr dst;
1738 int op;
1739 };
1740
1741 #endif
1742
1743 /* flags for RDR options */
1744 #define PF_DPORT_RANGE 0x01 /* Dest port uses range */
1745 #define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */
1746
1747 /* UDP state enumeration */
1748 #define PFUDPS_NO_TRAFFIC 0
1749 #define PFUDPS_SINGLE 1
1750 #define PFUDPS_MULTIPLE 2
1751
1752 #define PFUDPS_NSTATES 3 /* number of state levels */
1753
1754 #define PFUDPS_NAMES { \
1755 "NO_TRAFFIC", \
1756 "SINGLE", \
1757 "MULTIPLE", \
1758 NULL \
1759 }
1760
1761 /* Other protocol state enumeration */
1762 #define PFOTHERS_NO_TRAFFIC 0
1763 #define PFOTHERS_SINGLE 1
1764 #define PFOTHERS_MULTIPLE 2
1765
1766 #define PFOTHERS_NSTATES 3 /* number of state levels */
1767
1768 #define PFOTHERS_NAMES { \
1769 "NO_TRAFFIC", \
1770 "SINGLE", \
1771 "MULTIPLE", \
1772 NULL \
1773 }
1774
1775 #define ACTION_SET(a, x) \
1776 do { \
1777 if ((a) != NULL) \
1778 *(a) = (x); \
1779 } while (0)
1780
1781 #define REASON_SET(a, x) \
1782 do { \
1783 SDT_PROBE2(pf, , test, reason_set, x, __LINE__); \
1784 if ((a) != NULL) \
1785 *(a) = (x); \
1786 if (x < PFRES_MAX) \
1787 counter_u64_add(V_pf_status.counters[x], 1); \
1788 } while (0)
1789
1790 enum pf_syncookies_mode {
1791 PF_SYNCOOKIES_NEVER = 0,
1792 PF_SYNCOOKIES_ALWAYS = 1,
1793 PF_SYNCOOKIES_ADAPTIVE = 2,
1794 PF_SYNCOOKIES_MODE_MAX = PF_SYNCOOKIES_ADAPTIVE
1795 };
1796
1797 #define PF_SYNCOOKIES_HIWATPCT 25
1798 #define PF_SYNCOOKIES_LOWATPCT (PF_SYNCOOKIES_HIWATPCT / 2)
1799
1800 #ifdef _KERNEL
1801 struct pf_kstatus {
1802 counter_u64_t counters[PFRES_MAX]; /* reason for passing/dropping */
1803 counter_u64_t lcounters[KLCNT_MAX]; /* limit counters */
1804 struct pf_counter_u64 fcounters[FCNT_MAX]; /* state operation counters */
1805 counter_u64_t scounters[SCNT_MAX]; /* src_node operation counters */
1806 counter_u64_t ncounters[NCNT_MAX];
1807 uint32_t states;
1808 uint32_t src_nodes;
1809 uint32_t running;
1810 uint32_t since;
1811 uint32_t debug;
1812 uint32_t hostid;
1813 char ifname[IFNAMSIZ];
1814 uint8_t pf_chksum[PF_MD5_DIGEST_LENGTH];
1815 bool keep_counters;
1816 enum pf_syncookies_mode syncookies_mode;
1817 bool syncookies_active;
1818 uint64_t syncookies_inflight[2];
1819 uint32_t states_halfopen;
1820 uint32_t reass;
1821 };
1822 #endif
1823
1824 struct pf_divert {
1825 union {
1826 struct in_addr ipv4;
1827 struct in6_addr ipv6;
1828 } addr;
1829 u_int16_t port;
1830 };
1831
1832 #define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */
1833 #define PFR_KENTRY_HIWAT 200000 /* Number of table entries */
1834
1835 struct pf_fragment_tag {
1836 uint16_t ft_hdrlen; /* header length of reassembled pkt */
1837 uint16_t ft_extoff; /* last extension header offset or 0 */
1838 uint16_t ft_maxlen; /* maximum fragment payload length */
1839 uint32_t ft_id; /* fragment id */
1840 };
1841
1842 /*
1843 * Limit the length of the fragment queue traversal. Remember
1844 * search entry points based on the fragment offset.
1845 */
1846 #define PF_FRAG_ENTRY_POINTS 16
1847
1848 /*
1849 * The number of entries in the fragment queue must be limited
1850 * to avoid DoS by linear searching. Instead of a global limit,
1851 * use a limit per entry point. For large packets these sum up.
1852 */
1853 #define PF_FRAG_ENTRY_LIMIT 64
1854
1855 /*
1856 * ioctl parameter structures
1857 */
1858
1859 struct pfioc_pooladdr {
1860 u_int32_t action;
1861 u_int32_t ticket;
1862 u_int32_t nr;
1863 u_int32_t r_num;
1864 u_int8_t r_action;
1865 u_int8_t r_last;
1866 u_int8_t af;
1867 char anchor[MAXPATHLEN];
1868 struct pf_pooladdr addr;
1869 };
1870
1871 struct pfioc_rule {
1872 u_int32_t action;
1873 u_int32_t ticket;
1874 u_int32_t pool_ticket;
1875 u_int32_t nr;
1876 char anchor[MAXPATHLEN];
1877 char anchor_call[MAXPATHLEN];
1878 struct pf_rule rule;
1879 };
1880
1881 struct pfioc_natlook {
1882 struct pf_addr saddr;
1883 struct pf_addr daddr;
1884 struct pf_addr rsaddr;
1885 struct pf_addr rdaddr;
1886 u_int16_t sport;
1887 u_int16_t dport;
1888 u_int16_t rsport;
1889 u_int16_t rdport;
1890 sa_family_t af;
1891 u_int8_t proto;
1892 u_int8_t direction;
1893 };
1894
1895 struct pfioc_state {
1896 struct pfsync_state_1301 state;
1897 };
1898
1899 struct pfioc_src_node_kill {
1900 sa_family_t psnk_af;
1901 struct pf_rule_addr psnk_src;
1902 struct pf_rule_addr psnk_dst;
1903 u_int psnk_killed;
1904 };
1905
1906 #ifdef _KERNEL
1907 struct pf_kstate_kill {
1908 struct pf_state_cmp psk_pfcmp;
1909 sa_family_t psk_af;
1910 int psk_proto;
1911 struct pf_rule_addr psk_src;
1912 struct pf_rule_addr psk_dst;
1913 struct pf_rule_addr psk_rt_addr;
1914 char psk_ifname[IFNAMSIZ];
1915 char psk_label[PF_RULE_LABEL_SIZE];
1916 u_int psk_killed;
1917 bool psk_kill_match;
1918 bool psk_nat;
1919 };
1920 #endif
1921
1922 struct pfioc_state_kill {
1923 struct pf_state_cmp psk_pfcmp;
1924 sa_family_t psk_af;
1925 int psk_proto;
1926 struct pf_rule_addr psk_src;
1927 struct pf_rule_addr psk_dst;
1928 char psk_ifname[IFNAMSIZ];
1929 char psk_label[PF_RULE_LABEL_SIZE];
1930 u_int psk_killed;
1931 };
1932
1933 struct pfioc_states {
1934 int ps_len;
1935 union {
1936 void *ps_buf;
1937 struct pfsync_state_1301 *ps_states;
1938 };
1939 };
1940
1941 struct pfioc_states_v2 {
1942 int ps_len;
1943 uint64_t ps_req_version;
1944 union {
1945 void *ps_buf;
1946 struct pf_state_export *ps_states;
1947 };
1948 };
1949
1950 struct pfioc_src_nodes {
1951 int psn_len;
1952 union {
1953 void *psn_buf;
1954 struct pf_src_node *psn_src_nodes;
1955 };
1956 };
1957
1958 struct pfioc_if {
1959 char ifname[IFNAMSIZ];
1960 };
1961
1962 struct pfioc_tm {
1963 int timeout;
1964 int seconds;
1965 };
1966
1967 struct pfioc_limit {
1968 int index;
1969 unsigned limit;
1970 };
1971
1972 struct pfioc_altq_v0 {
1973 u_int32_t action;
1974 u_int32_t ticket;
1975 u_int32_t nr;
1976 struct pf_altq_v0 altq;
1977 };
1978
1979 struct pfioc_altq_v1 {
1980 u_int32_t action;
1981 u_int32_t ticket;
1982 u_int32_t nr;
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;
1988 struct pf_altq_v1 altq;
1989 };
1990
1991 /*
1992 * Latest version of struct pfioc_altq_vX. This must move in lock-step with
1993 * the latest version of struct pf_altq_vX as it has that struct as a
1994 * member.
1995 */
1996 #define PFIOC_ALTQ_VERSION PF_ALTQ_VERSION
1997
1998 struct pfioc_qstats_v0 {
1999 u_int32_t ticket;
2000 u_int32_t nr;
2001 void *buf;
2002 int nbytes;
2003 u_int8_t scheduler;
2004 };
2005
2006 struct pfioc_qstats_v1 {
2007 u_int32_t ticket;
2008 u_int32_t nr;
2009 void *buf;
2010 int nbytes;
2011 u_int8_t scheduler;
2012 /*
2013 * Placed here so code that only uses the above parameters can be
2014 * written entirely in terms of the v0 or v1 type.
2015 */
2016 u_int32_t version; /* Requested version of stats struct */
2017 };
2018
2019 /* Latest version of struct pfioc_qstats_vX */
2020 #define PFIOC_QSTATS_VERSION 1
2021
2022 struct pfioc_ruleset {
2023 u_int32_t nr;
2024 char path[MAXPATHLEN];
2025 char name[PF_ANCHOR_NAME_SIZE];
2026 };
2027
2028 #define PF_RULESET_ALTQ (PF_RULESET_MAX)
2029 #define PF_RULESET_TABLE (PF_RULESET_MAX+1)
2030 #define PF_RULESET_ETH (PF_RULESET_MAX+2)
2031 struct pfioc_trans {
2032 int size; /* number of elements */
2033 int esize; /* size of each element in bytes */
2034 struct pfioc_trans_e {
2035 int rs_num;
2036 char anchor[MAXPATHLEN];
2037 u_int32_t ticket;
2038 } *array;
2039 };
2040
2041 #define PFR_FLAG_ATOMIC 0x00000001 /* unused */
2042 #define PFR_FLAG_DUMMY 0x00000002
2043 #define PFR_FLAG_FEEDBACK 0x00000004
2044 #define PFR_FLAG_CLSTATS 0x00000008
2045 #define PFR_FLAG_ADDRSTOO 0x00000010
2046 #define PFR_FLAG_REPLACE 0x00000020
2047 #define PFR_FLAG_ALLRSETS 0x00000040
2048 #define PFR_FLAG_ALLMASK 0x0000007F
2049 #ifdef _KERNEL
2050 #define PFR_FLAG_USERIOCTL 0x10000000
2051 #endif
2052
2053 struct pfioc_table {
2054 struct pfr_table pfrio_table;
2055 void *pfrio_buffer;
2056 int pfrio_esize;
2057 int pfrio_size;
2058 int pfrio_size2;
2059 int pfrio_nadd;
2060 int pfrio_ndel;
2061 int pfrio_nchange;
2062 int pfrio_flags;
2063 u_int32_t pfrio_ticket;
2064 };
2065 #define pfrio_exists pfrio_nadd
2066 #define pfrio_nzero pfrio_nadd
2067 #define pfrio_nmatch pfrio_nadd
2068 #define pfrio_naddr pfrio_size2
2069 #define pfrio_setflag pfrio_size2
2070 #define pfrio_clrflag pfrio_nadd
2071
2072 struct pfioc_iface {
2073 char pfiio_name[IFNAMSIZ];
2074 void *pfiio_buffer;
2075 int pfiio_esize;
2076 int pfiio_size;
2077 int pfiio_nzero;
2078 int pfiio_flags;
2079 };
2080
2081 /*
2082 * ioctl operations
2083 */
2084
2085 #define DIOCSTART _IO ('D', 1)
2086 #define DIOCSTOP _IO ('D', 2)
2087 #define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule)
2088 #define DIOCADDRULENV _IOWR('D', 4, struct pfioc_nv)
2089 #define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule)
2090 #define DIOCGETRULENV _IOWR('D', 7, struct pfioc_nv)
2091 #define DIOCCLRSTATESNV _IOWR('D', 18, struct pfioc_nv)
2092 #define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state)
2093 #define DIOCGETSTATENV _IOWR('D', 19, struct pfioc_nv)
2094 #define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if)
2095 #define DIOCGETSTATUSNV _IOWR('D', 21, struct pfioc_nv)
2096 #define DIOCCLRSTATUS _IO ('D', 22)
2097 #define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook)
2098 #define DIOCSETDEBUG _IOWR('D', 24, u_int32_t)
2099 #ifdef COMPAT_FREEBSD14
2100 #define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states)
2101 #endif
2102 #define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule)
2103 #define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm)
2104 #define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm)
2105 #define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state)
2106 #define DIOCCLRRULECTRS _IO ('D', 38)
2107 #define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit)
2108 #define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit)
2109 #define DIOCKILLSTATESNV _IOWR('D', 41, struct pfioc_nv)
2110 #define DIOCSTARTALTQ _IO ('D', 42)
2111 #define DIOCSTOPALTQ _IO ('D', 43)
2112 #define DIOCADDALTQV0 _IOWR('D', 45, struct pfioc_altq_v0)
2113 #define DIOCADDALTQV1 _IOWR('D', 45, struct pfioc_altq_v1)
2114 #define DIOCGETALTQSV0 _IOWR('D', 47, struct pfioc_altq_v0)
2115 #define DIOCGETALTQSV1 _IOWR('D', 47, struct pfioc_altq_v1)
2116 #define DIOCGETALTQV0 _IOWR('D', 48, struct pfioc_altq_v0)
2117 #define DIOCGETALTQV1 _IOWR('D', 48, struct pfioc_altq_v1)
2118 #define DIOCCHANGEALTQV0 _IOWR('D', 49, struct pfioc_altq_v0)
2119 #define DIOCCHANGEALTQV1 _IOWR('D', 49, struct pfioc_altq_v1)
2120 #define DIOCGETQSTATSV0 _IOWR('D', 50, struct pfioc_qstats_v0)
2121 #define DIOCGETQSTATSV1 _IOWR('D', 50, struct pfioc_qstats_v1)
2122 #define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr)
2123 #define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr)
2124 #define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr)
2125 #define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr)
2126 #define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr)
2127 #define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset)
2128 #define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset)
2129 #define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table)
2130 #define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table)
2131 #define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table)
2132 #define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table)
2133 #define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table)
2134 #define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table)
2135 #define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table)
2136 #define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table)
2137 #define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table)
2138 #define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table)
2139 #define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table)
2140 #define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table)
2141 #define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table)
2142 #define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table)
2143 #define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table)
2144 #define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table)
2145 #define DIOCOSFPFLUSH _IO('D', 78)
2146 #define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl)
2147 #define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl)
2148 #define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans)
2149 #define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans)
2150 #define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans)
2151 #define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes)
2152 #define DIOCCLRSRCNODES _IO('D', 85)
2153 #define DIOCSETHOSTID _IOWR('D', 86, u_int32_t)
2154 #define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface)
2155 #define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface)
2156 #define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface)
2157 #define DIOCKILLSRCNODES _IOWR('D', 91, struct pfioc_src_node_kill)
2158 #define DIOCGIFSPEEDV0 _IOWR('D', 92, struct pf_ifspeed_v0)
2159 #define DIOCGIFSPEEDV1 _IOWR('D', 92, struct pf_ifspeed_v1)
2160 #ifdef COMPAT_FREEBSD14
2161 #define DIOCGETSTATESV2 _IOWR('D', 93, struct pfioc_states_v2)
2162 #endif
2163 #define DIOCGETSYNCOOKIES _IOWR('D', 94, struct pfioc_nv)
2164 #define DIOCSETSYNCOOKIES _IOWR('D', 95, struct pfioc_nv)
2165 #define DIOCKEEPCOUNTERS _IOWR('D', 96, struct pfioc_nv)
2166 #define DIOCKEEPCOUNTERS_FREEBSD13 _IOWR('D', 92, struct pfioc_nv)
2167 #define DIOCADDETHRULE _IOWR('D', 97, struct pfioc_nv)
2168 #define DIOCGETETHRULE _IOWR('D', 98, struct pfioc_nv)
2169 #define DIOCGETETHRULES _IOWR('D', 99, struct pfioc_nv)
2170 #define DIOCGETETHRULESETS _IOWR('D', 100, struct pfioc_nv)
2171 #define DIOCGETETHRULESET _IOWR('D', 101, struct pfioc_nv)
2172 #define DIOCSETREASS _IOWR('D', 102, u_int32_t)
2173
2174 struct pf_ifspeed_v0 {
2175 char ifname[IFNAMSIZ];
2176 u_int32_t baudrate;
2177 };
2178
2179 struct pf_ifspeed_v1 {
2180 char ifname[IFNAMSIZ];
2181 u_int32_t baudrate32;
2182 /* layout identical to struct pf_ifspeed_v0 up to this point */
2183 u_int64_t baudrate;
2184 };
2185
2186 /* Latest version of struct pf_ifspeed_vX */
2187 #define PF_IFSPEED_VERSION 1
2188
2189 /*
2190 * Compatibility and convenience macros
2191 */
2192 #ifndef _KERNEL
2193 #ifdef PFIOC_USE_LATEST
2194 /*
2195 * Maintaining in-tree consumers of the ioctl interface is easier when that
2196 * code can be written in terms old names that refer to the latest interface
2197 * version as that reduces the required changes in the consumers to those
2198 * that are functionally necessary to accommodate a new interface version.
2199 */
2200 #define pfioc_altq __CONCAT(pfioc_altq_v, PFIOC_ALTQ_VERSION)
2201 #define pfioc_qstats __CONCAT(pfioc_qstats_v, PFIOC_QSTATS_VERSION)
2202 #define pf_ifspeed __CONCAT(pf_ifspeed_v, PF_IFSPEED_VERSION)
2203
2204 #define DIOCADDALTQ __CONCAT(DIOCADDALTQV, PFIOC_ALTQ_VERSION)
2205 #define DIOCGETALTQS __CONCAT(DIOCGETALTQSV, PFIOC_ALTQ_VERSION)
2206 #define DIOCGETALTQ __CONCAT(DIOCGETALTQV, PFIOC_ALTQ_VERSION)
2207 #define DIOCCHANGEALTQ __CONCAT(DIOCCHANGEALTQV, PFIOC_ALTQ_VERSION)
2208 #define DIOCGETQSTATS __CONCAT(DIOCGETQSTATSV, PFIOC_QSTATS_VERSION)
2209 #define DIOCGIFSPEED __CONCAT(DIOCGIFSPEEDV, PF_IFSPEED_VERSION)
2210 #else
2211 /*
2212 * When building out-of-tree code that is written for the old interface,
2213 * such as may exist in ports for example, resolve the old struct tags and
2214 * ioctl command names to the v0 versions.
2215 */
2216 #define pfioc_altq __CONCAT(pfioc_altq_v, 0)
2217 #define pfioc_qstats __CONCAT(pfioc_qstats_v, 0)
2218 #define pf_ifspeed __CONCAT(pf_ifspeed_v, 0)
2219
2220 #define DIOCADDALTQ __CONCAT(DIOCADDALTQV, 0)
2221 #define DIOCGETALTQS __CONCAT(DIOCGETALTQSV, 0)
2222 #define DIOCGETALTQ __CONCAT(DIOCGETALTQV, 0)
2223 #define DIOCCHANGEALTQ __CONCAT(DIOCCHANGEALTQV, 0)
2224 #define DIOCGETQSTATS __CONCAT(DIOCGETQSTATSV, 0)
2225 #define DIOCGIFSPEED __CONCAT(DIOCGIFSPEEDV, 0)
2226 #endif /* PFIOC_USE_LATEST */
2227 #endif /* _KERNEL */
2228
2229 #ifdef _KERNEL
2230 LIST_HEAD(pf_ksrc_node_list, pf_ksrc_node);
2231 struct pf_srchash {
2232 struct pf_ksrc_node_list nodes;
2233 struct mtx lock;
2234 };
2235
2236 struct pf_keyhash {
2237 LIST_HEAD(, pf_state_key) keys;
2238 struct mtx lock;
2239 };
2240
2241 struct pf_idhash {
2242 LIST_HEAD(, pf_kstate) states;
2243 struct mtx lock;
2244 };
2245
2246 struct pf_udpendpointhash {
2247 LIST_HEAD(, pf_udp_endpoint) endpoints;
2248 /* refcont is synchronized on the source endpoint's row lock */
2249 struct mtx lock;
2250 };
2251
2252 extern u_long pf_ioctl_maxcount;
2253 VNET_DECLARE(u_long, pf_hashmask);
2254 #define V_pf_hashmask VNET(pf_hashmask)
2255 VNET_DECLARE(u_long, pf_srchashmask);
2256 #define V_pf_srchashmask VNET(pf_srchashmask)
2257 VNET_DECLARE(u_long, pf_udpendpointhashmask);
2258 #define V_pf_udpendpointhashmask VNET(pf_udpendpointhashmask)
2259 #define PF_HASHSIZ (131072)
2260 #define PF_SRCHASHSIZ (PF_HASHSIZ/4)
2261 #define PF_UDPENDHASHSIZ (PF_HASHSIZ/4)
2262 VNET_DECLARE(struct pf_keyhash *, pf_keyhash);
2263 VNET_DECLARE(struct pf_idhash *, pf_idhash);
2264 VNET_DECLARE(struct pf_udpendpointhash *, pf_udpendpointhash);
2265 #define V_pf_keyhash VNET(pf_keyhash)
2266 #define V_pf_idhash VNET(pf_idhash)
2267 #define V_pf_udpendpointhash VNET(pf_udpendpointhash)
2268 VNET_DECLARE(struct pf_srchash *, pf_srchash);
2269 #define V_pf_srchash VNET(pf_srchash)
2270
2271 #define PF_IDHASHID(id) (be64toh(id) % (V_pf_hashmask + 1))
2272 #define PF_IDHASH(s) PF_IDHASHID((s)->id)
2273
2274 VNET_DECLARE(void *, pf_swi_cookie);
2275 #define V_pf_swi_cookie VNET(pf_swi_cookie)
2276 VNET_DECLARE(struct intr_event *, pf_swi_ie);
2277 #define V_pf_swi_ie VNET(pf_swi_ie)
2278
2279 VNET_DECLARE(struct unrhdr64, pf_stateid);
2280 #define V_pf_stateid VNET(pf_stateid)
2281
2282 TAILQ_HEAD(pf_altqqueue, pf_altq);
2283 VNET_DECLARE(struct pf_altqqueue, pf_altqs[4]);
2284 #define V_pf_altqs VNET(pf_altqs)
2285 VNET_DECLARE(struct pf_kpalist, pf_pabuf[3]);
2286 #define V_pf_pabuf VNET(pf_pabuf)
2287
2288 VNET_DECLARE(u_int32_t, ticket_altqs_active);
2289 #define V_ticket_altqs_active VNET(ticket_altqs_active)
2290 VNET_DECLARE(u_int32_t, ticket_altqs_inactive);
2291 #define V_ticket_altqs_inactive VNET(ticket_altqs_inactive)
2292 VNET_DECLARE(int, altqs_inactive_open);
2293 #define V_altqs_inactive_open VNET(altqs_inactive_open)
2294 VNET_DECLARE(u_int32_t, ticket_pabuf);
2295 #define V_ticket_pabuf VNET(ticket_pabuf)
2296 VNET_DECLARE(struct pf_altqqueue *, pf_altqs_active);
2297 #define V_pf_altqs_active VNET(pf_altqs_active)
2298 VNET_DECLARE(struct pf_altqqueue *, pf_altq_ifs_active);
2299 #define V_pf_altq_ifs_active VNET(pf_altq_ifs_active)
2300 VNET_DECLARE(struct pf_altqqueue *, pf_altqs_inactive);
2301 #define V_pf_altqs_inactive VNET(pf_altqs_inactive)
2302 VNET_DECLARE(struct pf_altqqueue *, pf_altq_ifs_inactive);
2303 #define V_pf_altq_ifs_inactive VNET(pf_altq_ifs_inactive)
2304
2305 VNET_DECLARE(struct pf_krulequeue, pf_unlinked_rules);
2306 #define V_pf_unlinked_rules VNET(pf_unlinked_rules)
2307
2308 #ifdef PF_WANT_32_TO_64_COUNTER
2309 LIST_HEAD(allkiflist_head, pfi_kkif);
2310 VNET_DECLARE(struct allkiflist_head, pf_allkiflist);
2311 #define V_pf_allkiflist VNET(pf_allkiflist)
2312 VNET_DECLARE(size_t, pf_allkifcount);
2313 #define V_pf_allkifcount VNET(pf_allkifcount)
2314 VNET_DECLARE(struct pfi_kkif *, pf_kifmarker);
2315 #define V_pf_kifmarker VNET(pf_kifmarker)
2316
2317 LIST_HEAD(allrulelist_head, pf_krule);
2318 VNET_DECLARE(struct allrulelist_head, pf_allrulelist);
2319 #define V_pf_allrulelist VNET(pf_allrulelist)
2320 VNET_DECLARE(size_t, pf_allrulecount);
2321 #define V_pf_allrulecount VNET(pf_allrulecount)
2322 VNET_DECLARE(struct pf_krule *, pf_rulemarker);
2323 #define V_pf_rulemarker VNET(pf_rulemarker)
2324 #endif
2325
2326 int pf_start(void);
2327 int pf_stop(void);
2328 void pf_initialize(void);
2329 void pf_mtag_initialize(void);
2330 void pf_mtag_cleanup(void);
2331 void pf_cleanup(void);
2332
2333 struct pf_mtag *pf_get_mtag(struct mbuf *);
2334
2335 extern void pf_calc_skip_steps(struct pf_krulequeue *);
2336 #ifdef ALTQ
2337 extern void pf_altq_ifnet_event(struct ifnet *, int);
2338 #endif
2339 VNET_DECLARE(uma_zone_t, pf_state_z);
2340 #define V_pf_state_z VNET(pf_state_z)
2341 VNET_DECLARE(uma_zone_t, pf_state_key_z);
2342 #define V_pf_state_key_z VNET(pf_state_key_z)
2343 VNET_DECLARE(uma_zone_t, pf_udp_mapping_z);
2344 #define V_pf_udp_mapping_z VNET(pf_udp_mapping_z)
2345 VNET_DECLARE(uma_zone_t, pf_state_scrub_z);
2346 #define V_pf_state_scrub_z VNET(pf_state_scrub_z)
2347 VNET_DECLARE(uma_zone_t, pf_anchor_z);
2348 #define V_pf_anchor_z VNET(pf_anchor_z)
2349 VNET_DECLARE(uma_zone_t, pf_eth_anchor_z);
2350 #define V_pf_eth_anchor_z VNET(pf_eth_anchor_z)
2351
2352 extern void pf_purge_thread(void *);
2353 extern void pf_unload_vnet_purge(void);
2354 extern void pf_intr(void *);
2355 extern void pf_purge_expired_src_nodes(void);
2356
2357 extern int pf_remove_state(struct pf_kstate *);
2358 extern int pf_state_insert(struct pfi_kkif *,
2359 struct pfi_kkif *,
2360 struct pf_state_key *,
2361 struct pf_state_key *,
2362 struct pf_kstate *);
2363 extern struct pf_kstate *pf_alloc_state(int);
2364 extern void pf_free_state(struct pf_kstate *);
2365 extern void pf_killstates(struct pf_kstate_kill *,
2366 unsigned int *);
2367 extern unsigned int pf_clear_states(const struct pf_kstate_kill *);
2368
2369 static __inline void
pf_ref_state(struct pf_kstate * s)2370 pf_ref_state(struct pf_kstate *s)
2371 {
2372
2373 refcount_acquire(&s->refs);
2374 }
2375
2376 static __inline int
pf_release_state(struct pf_kstate * s)2377 pf_release_state(struct pf_kstate *s)
2378 {
2379
2380 if (refcount_release(&s->refs)) {
2381 pf_free_state(s);
2382 return (1);
2383 } else
2384 return (0);
2385 }
2386
2387 static __inline int
pf_release_staten(struct pf_kstate * s,u_int n)2388 pf_release_staten(struct pf_kstate *s, u_int n)
2389 {
2390
2391 if (refcount_releasen(&s->refs, n)) {
2392 pf_free_state(s);
2393 return (1);
2394 } else
2395 return (0);
2396 }
2397
2398 static __inline uint64_t
pf_get_uptime(void)2399 pf_get_uptime(void)
2400 {
2401 struct timeval t;
2402 microuptime(&t);
2403 return ((t.tv_sec * 1000) + (t.tv_usec / 1000));
2404 }
2405
2406 static __inline uint64_t
pf_get_time(void)2407 pf_get_time(void)
2408 {
2409 struct timeval t;
2410 microtime(&t);
2411 return ((t.tv_sec * 1000) + (t.tv_usec / 1000));
2412 }
2413
2414 extern struct pf_kstate *pf_find_state_byid(uint64_t, uint32_t);
2415 extern struct pf_kstate *pf_find_state_all(
2416 const struct pf_state_key_cmp *,
2417 u_int, int *);
2418 extern bool pf_find_state_all_exists(
2419 const struct pf_state_key_cmp *,
2420 u_int);
2421 extern struct pf_udp_mapping *pf_udp_mapping_find(struct pf_udp_endpoint_cmp
2422 *endpoint);
2423 extern struct pf_udp_mapping *pf_udp_mapping_create(sa_family_t af,
2424 struct pf_addr *src_addr, uint16_t src_port,
2425 struct pf_addr *nat_addr, uint16_t nat_port);
2426 extern int pf_udp_mapping_insert(struct pf_udp_mapping
2427 *mapping);
2428 extern void pf_udp_mapping_release(struct pf_udp_mapping
2429 *mapping);
2430 uint32_t pf_hashsrc(struct pf_addr *, sa_family_t);
2431 extern bool pf_src_node_exists(struct pf_ksrc_node **,
2432 struct pf_srchash *);
2433 extern struct pf_ksrc_node *pf_find_src_node(struct pf_addr *,
2434 struct pf_krule *, sa_family_t,
2435 struct pf_srchash **, pf_sn_types_t, bool);
2436 extern void pf_unlink_src_node(struct pf_ksrc_node *);
2437 extern u_int pf_free_src_nodes(struct pf_ksrc_node_list *);
2438 extern void pf_print_state(struct pf_kstate *);
2439 extern void pf_print_flags(uint16_t);
2440 extern int pf_addr_wrap_neq(struct pf_addr_wrap *,
2441 struct pf_addr_wrap *);
2442 extern u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t,
2443 u_int8_t);
2444 extern u_int16_t pf_proto_cksum_fixup(struct mbuf *, u_int16_t,
2445 u_int16_t, u_int16_t, u_int8_t);
2446
2447 VNET_DECLARE(struct pf_krule, pf_default_rule);
2448 #define V_pf_default_rule VNET(pf_default_rule)
2449 extern void pf_addrcpy(struct pf_addr *, const struct pf_addr *,
2450 sa_family_t);
2451 void pf_free_rule(struct pf_krule *);
2452
2453 int pf_test_eth(int, int, struct ifnet *, struct mbuf **, struct inpcb *);
2454 int pf_scan_sctp(struct pf_pdesc *);
2455 #if defined(INET) || defined(INET6)
2456 int pf_test(sa_family_t, int, int, struct ifnet *, struct mbuf **, struct inpcb *,
2457 struct pf_rule_actions *);
2458 #endif
2459 #ifdef INET
2460 int pf_normalize_ip(u_short *, struct pf_pdesc *);
2461 #endif /* INET */
2462
2463 void pf_poolmask(struct pf_addr *, struct pf_addr*,
2464 struct pf_addr *, struct pf_addr *, sa_family_t);
2465 void pf_addr_inc(struct pf_addr *, sa_family_t);
2466 #ifdef INET6
2467 int pf_normalize_ip6(int, u_short *, struct pf_pdesc *);
2468 int pf_max_frag_size(struct mbuf *);
2469 int pf_refragment6(struct ifnet *, struct mbuf **, struct m_tag *,
2470 struct ifnet *, bool);
2471 #endif /* INET6 */
2472
2473 int pf_multihome_scan_init(int, int, struct pf_pdesc *);
2474 int pf_multihome_scan_asconf(int, int, struct pf_pdesc *);
2475
2476 u_int32_t pf_new_isn(struct pf_kstate *);
2477 void *pf_pull_hdr(const struct mbuf *, int, void *, int, u_short *,
2478 sa_family_t);
2479 void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t);
2480 void pf_change_proto_a(struct mbuf *, void *, u_int16_t *, u_int32_t,
2481 u_int8_t);
2482 void pf_change_tcp_a(struct mbuf *, void *, u_int16_t *, u_int32_t);
2483 int pf_patch_16(struct pf_pdesc *, void *, u_int16_t, bool);
2484 int pf_patch_32(struct pf_pdesc *, void *, u_int32_t, bool);
2485 void pf_send_deferred_syn(struct pf_kstate *);
2486 int pf_match_addr(u_int8_t, const struct pf_addr *,
2487 const struct pf_addr *, const struct pf_addr *, sa_family_t);
2488 int pf_match_addr_range(const struct pf_addr *, const struct pf_addr *,
2489 const struct pf_addr *, sa_family_t);
2490 int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t);
2491
2492 void pf_normalize_init(void);
2493 void pf_normalize_cleanup(void);
2494 uint64_t pf_normalize_get_frag_count(void);
2495 int pf_normalize_tcp(struct pf_pdesc *);
2496 void pf_normalize_tcp_cleanup(struct pf_kstate *);
2497 int pf_normalize_tcp_init(struct pf_pdesc *,
2498 struct tcphdr *, struct pf_state_peer *);
2499 int pf_normalize_tcp_stateful(struct pf_pdesc *,
2500 u_short *, struct tcphdr *, struct pf_kstate *,
2501 struct pf_state_peer *, struct pf_state_peer *, int *);
2502 int pf_normalize_sctp_init(struct pf_pdesc *,
2503 struct pf_state_peer *, struct pf_state_peer *);
2504 int pf_normalize_sctp(struct pf_pdesc *);
2505 u_int32_t
2506 pf_state_expires(const struct pf_kstate *);
2507 void pf_purge_expired_fragments(void);
2508 void pf_purge_fragments(uint32_t);
2509 int pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kkif *,
2510 int);
2511 int pf_socket_lookup(struct pf_pdesc *);
2512 struct pf_state_key *pf_alloc_state_key(int);
2513 int pf_translate(struct pf_pdesc *, struct pf_addr *, u_int16_t,
2514 struct pf_addr *, u_int16_t, u_int16_t, int);
2515 int pf_translate_af(struct pf_pdesc *);
2516 bool pf_init_threshold(struct pf_kthreshold *, uint32_t, uint32_t);
2517 uint16_t pf_tagname2tag(const char *);
2518 #ifdef ALTQ
2519 uint16_t pf_qname2qid(const char *, bool);
2520 #endif /* ALTQ */
2521
2522 void pfr_initialize(void);
2523 void pfr_cleanup(void);
2524 int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t);
2525 void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t,
2526 u_int64_t, int, int, int);
2527 int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, sa_family_t,
2528 pf_addr_filter_func_t, bool);
2529 void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *);
2530 struct pfr_ktable *
2531 pfr_attach_table(struct pf_kruleset *, char *);
2532 struct pfr_ktable *
2533 pfr_eth_attach_table(struct pf_keth_ruleset *, char *);
2534 void pfr_detach_table(struct pfr_ktable *);
2535 int pfr_clr_tables(struct pfr_table *, int *, int);
2536 int pfr_add_tables(struct pfr_table *, int, int *, int);
2537 int pfr_del_tables(struct pfr_table *, int, int *, int);
2538 int pfr_table_count(struct pfr_table *, int);
2539 int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int);
2540 int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int);
2541 int pfr_clr_tstats(struct pfr_table *, int, int *, int);
2542 int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int);
2543 int pfr_clr_addrs(struct pfr_table *, int *, int);
2544 int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *, time_t);
2545 int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
2546 int);
2547 int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
2548 int);
2549 int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
2550 int *, int *, int *, int, u_int32_t);
2551 int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int);
2552 int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int);
2553 int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *,
2554 int);
2555 int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
2556 int);
2557 int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int);
2558 int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int);
2559 int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int);
2560 int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *,
2561 int *, u_int32_t, int);
2562 struct pfr_ktable
2563 *pfr_ktable_select_active(struct pfr_ktable *);
2564
2565 MALLOC_DECLARE(PFI_MTYPE);
2566 VNET_DECLARE(struct pfi_kkif *, pfi_all);
2567 #define V_pfi_all VNET(pfi_all)
2568
2569 void pfi_initialize(void);
2570 void pfi_initialize_vnet(void);
2571 void pfi_cleanup(void);
2572 void pfi_cleanup_vnet(void);
2573 void pfi_kkif_ref(struct pfi_kkif *);
2574 void pfi_kkif_unref(struct pfi_kkif *);
2575 struct pfi_kkif *pfi_kkif_find(const char *);
2576 struct pfi_kkif *pfi_kkif_attach(struct pfi_kkif *, const char *);
2577 int pfi_kkif_match(struct pfi_kkif *, struct pfi_kkif *);
2578 void pfi_kkif_purge(void);
2579 int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *,
2580 sa_family_t);
2581 int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t);
2582 void pfi_dynaddr_remove(struct pfi_dynaddr *);
2583 void pfi_dynaddr_copyout(struct pf_addr_wrap *);
2584 void pfi_update_status(const char *, struct pf_status *);
2585 void pfi_get_ifaces(const char *, struct pfi_kif *, int *);
2586 int pfi_set_flags(const char *, int);
2587 int pfi_clear_flags(const char *, int);
2588
2589 int pf_match_tag(struct mbuf *, struct pf_krule *, int *, int);
2590 int pf_tag_packet(struct pf_pdesc *, int);
2591 int pf_addr_cmp(struct pf_addr *, struct pf_addr *,
2592 sa_family_t);
2593
2594 uint8_t* pf_find_tcpopt(u_int8_t *, u_int8_t *, size_t,
2595 u_int8_t, u_int8_t);
2596 u_int16_t pf_get_mss(struct pf_pdesc *);
2597 u_int8_t pf_get_wscale(struct pf_pdesc *);
2598 struct mbuf *pf_build_tcp(const struct pf_krule *, sa_family_t,
2599 const struct pf_addr *, const struct pf_addr *,
2600 u_int16_t, u_int16_t, u_int32_t, u_int32_t,
2601 u_int8_t, u_int16_t, u_int16_t, u_int8_t, int,
2602 u_int16_t, u_int16_t, u_int, int, u_short *);
2603 void pf_send_tcp(const struct pf_krule *, sa_family_t,
2604 const struct pf_addr *, const struct pf_addr *,
2605 u_int16_t, u_int16_t, u_int32_t, u_int32_t,
2606 u_int8_t, u_int16_t, u_int16_t, u_int8_t, int,
2607 u_int16_t, u_int16_t, int, u_short *);
2608
2609 void pf_syncookies_init(void);
2610 void pf_syncookies_cleanup(void);
2611 int pf_get_syncookies(struct pfioc_nv *);
2612 int pf_set_syncookies(struct pfioc_nv *);
2613 int pf_synflood_check(struct pf_pdesc *);
2614 void pf_syncookie_send(struct pf_pdesc *, u_short *);
2615 bool pf_syncookie_check(struct pf_pdesc *);
2616 u_int8_t pf_syncookie_validate(struct pf_pdesc *);
2617 struct mbuf * pf_syncookie_recreate_syn(struct pf_pdesc *,
2618 u_short *);
2619
2620 VNET_DECLARE(struct pf_kstatus, pf_status);
2621 #define V_pf_status VNET(pf_status)
2622
2623 struct pf_limit {
2624 uma_zone_t zone;
2625 u_int limit;
2626 };
2627 VNET_DECLARE(struct pf_limit, pf_limits[PF_LIMIT_MAX]);
2628 #define V_pf_limits VNET(pf_limits)
2629
2630 #endif /* _KERNEL */
2631
2632 #ifdef _KERNEL
2633 struct pf_nl_pooladdr {
2634 u_int32_t action;
2635 u_int32_t ticket;
2636 u_int32_t nr;
2637 u_int32_t r_num;
2638 u_int8_t r_action;
2639 u_int8_t r_last;
2640 u_int8_t af;
2641 char anchor[MAXPATHLEN];
2642 struct pf_pooladdr addr;
2643 /* Above this is identical to pfioc_pooladdr */
2644 int which;
2645 };
2646
2647 VNET_DECLARE(struct pf_kanchor_global, pf_anchors);
2648 #define V_pf_anchors VNET(pf_anchors)
2649 VNET_DECLARE(struct pf_kanchor, pf_main_anchor);
2650 #define V_pf_main_anchor VNET(pf_main_anchor)
2651 VNET_DECLARE(struct pf_keth_anchor_global, pf_keth_anchors);
2652 #define V_pf_keth_anchors VNET(pf_keth_anchors)
2653 #define pf_main_ruleset V_pf_main_anchor.ruleset
2654
2655 VNET_DECLARE(struct pf_keth_anchor, pf_main_keth_anchor);
2656 #define V_pf_main_keth_anchor VNET(pf_main_keth_anchor)
2657 VNET_DECLARE(struct pf_keth_ruleset*, pf_keth);
2658 #define V_pf_keth VNET(pf_keth)
2659
2660 void pf_init_kruleset(struct pf_kruleset *);
2661 void pf_init_keth(struct pf_keth_ruleset *);
2662 int pf_kanchor_setup(struct pf_krule *,
2663 const struct pf_kruleset *, const char *);
2664 int pf_kanchor_copyout(const struct pf_kruleset *,
2665 const struct pf_krule *, char *, size_t);
2666 int pf_kanchor_nvcopyout(const struct pf_kruleset *,
2667 const struct pf_krule *, nvlist_t *);
2668 void pf_remove_kanchor(struct pf_krule *);
2669 void pf_remove_if_empty_kruleset(struct pf_kruleset *);
2670 struct pf_kruleset *pf_find_kruleset(const char *);
2671 struct pf_kruleset *pf_get_leaf_kruleset(char *, char **);
2672 struct pf_kruleset *pf_find_or_create_kruleset(const char *);
2673 void pf_rs_initialize(void);
2674 void pf_rule_tree_free(struct pf_krule_global *);
2675
2676
2677 struct pf_krule *pf_krule_alloc(void);
2678
2679 void pf_remove_if_empty_keth_ruleset(
2680 struct pf_keth_ruleset *);
2681 struct pf_keth_ruleset *pf_find_keth_ruleset(const char *);
2682 struct pf_keth_anchor *pf_find_keth_anchor(const char *);
2683 int pf_keth_anchor_setup(struct pf_keth_rule *,
2684 const struct pf_keth_ruleset *, const char *);
2685 int pf_keth_anchor_nvcopyout(
2686 const struct pf_keth_ruleset *,
2687 const struct pf_keth_rule *, nvlist_t *);
2688 struct pf_keth_ruleset *pf_find_or_create_keth_ruleset(const char *);
2689 void pf_keth_anchor_remove(struct pf_keth_rule *);
2690
2691 int pf_ioctl_getrules(struct pfioc_rule *);
2692 int pf_ioctl_addrule(struct pf_krule *, uint32_t,
2693 uint32_t, const char *, const char *, uid_t uid,
2694 pid_t);
2695 void pf_ioctl_clear_status(void);
2696 int pf_ioctl_get_timeout(int, int *);
2697 int pf_ioctl_set_timeout(int, int, int *);
2698 int pf_ioctl_get_limit(int, unsigned int *);
2699 int pf_ioctl_set_limit(int, unsigned int, unsigned int *);
2700 int pf_ioctl_begin_addrs(uint32_t *);
2701 int pf_ioctl_add_addr(struct pf_nl_pooladdr *);
2702 int pf_ioctl_get_addrs(struct pf_nl_pooladdr *);
2703 int pf_ioctl_get_addr(struct pf_nl_pooladdr *);
2704 int pf_ioctl_get_rulesets(struct pfioc_ruleset *);
2705 int pf_ioctl_get_ruleset(struct pfioc_ruleset *);
2706 int pf_ioctl_natlook(struct pfioc_natlook *);
2707
2708 void pf_krule_free(struct pf_krule *);
2709 void pf_krule_clear_counters(struct pf_krule *);
2710 void pf_addr_copyout(struct pf_addr_wrap *);
2711 #endif
2712
2713 /* The fingerprint functions can be linked into userland programs (tcpdump) */
2714 int pf_osfp_add(struct pf_osfp_ioctl *);
2715 #ifdef _KERNEL
2716 struct pf_osfp_enlist *
2717 pf_osfp_fingerprint(struct pf_pdesc *, const struct tcphdr *);
2718 #endif /* _KERNEL */
2719 void pf_osfp_flush(void);
2720 int pf_osfp_get(struct pf_osfp_ioctl *);
2721 int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t);
2722
2723 #ifdef _KERNEL
2724 void pf_print_host(struct pf_addr *, u_int16_t, sa_family_t);
2725
2726 enum pf_test_status pf_step_into_anchor(struct pf_test_ctx *, struct pf_krule *,
2727 struct pf_krule_slist *match_rules);
2728 enum pf_test_status pf_match_rule(struct pf_test_ctx *, struct pf_kruleset *,
2729 struct pf_krule_slist *);
2730 void pf_step_into_keth_anchor(struct pf_keth_anchor_stackframe *,
2731 int *, struct pf_keth_ruleset **,
2732 struct pf_keth_rule **, struct pf_keth_rule **,
2733 int *);
2734 int pf_step_out_of_keth_anchor(struct pf_keth_anchor_stackframe *,
2735 int *, struct pf_keth_ruleset **,
2736 struct pf_keth_rule **, struct pf_keth_rule **,
2737 int *);
2738
2739 u_short pf_map_addr(sa_family_t, struct pf_krule *,
2740 struct pf_addr *, struct pf_addr *,
2741 struct pfi_kkif **nkif, sa_family_t *,
2742 struct pf_addr *, struct pf_kpool *);
2743 u_short pf_map_addr_sn(u_int8_t, struct pf_krule *,
2744 struct pf_addr *, struct pf_addr *,
2745 sa_family_t *, struct pfi_kkif **,
2746 struct pf_addr *, struct pf_kpool *,
2747 pf_sn_types_t);
2748 int pf_get_transaddr_af(struct pf_krule *,
2749 struct pf_pdesc *);
2750 u_short pf_get_translation(struct pf_test_ctx *);
2751 u_short pf_get_transaddr(struct pf_test_ctx *,
2752 struct pf_krule *,
2753 u_int8_t, struct pf_kpool *);
2754 int pf_translate_compat(struct pf_test_ctx *);
2755
2756 int pf_state_key_setup(struct pf_pdesc *,
2757 u_int16_t, u_int16_t,
2758 struct pf_state_key **sk, struct pf_state_key **nk);
2759 struct pf_state_key *pf_state_key_clone(const struct pf_state_key *);
2760 void pf_rule_to_actions(struct pf_krule *,
2761 struct pf_rule_actions *);
2762 int pf_normalize_mss(struct pf_pdesc *pd);
2763 #if defined(INET) || defined(INET6)
2764 void pf_scrub(struct pf_pdesc *);
2765 #endif
2766
2767 struct pfi_kkif *pf_kkif_create(int);
2768 void pf_kkif_free(struct pfi_kkif *);
2769 void pf_kkif_zero(struct pfi_kkif *);
2770
2771
2772 /* NAT64 functions. */
2773 int inet_nat64(int, const void *, void *, const void *, u_int8_t);
2774 int inet_nat64_inet(const void *, void *, const void *, u_int8_t);
2775 int inet_nat64_inet6(const void *, void *, const void *, u_int8_t);
2776
2777 int inet_nat46(int, const void *, void *, const void *, u_int8_t);
2778 int inet_nat46_inet(const void *, void *, const void *, u_int8_t);
2779 int inet_nat46_inet6(const void *, void *, const void *, u_int8_t);
2780
2781 #endif /* _KERNEL */
2782
2783 #endif /* _NET_PFVAR_H_ */
2784