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 uint16_t max_pkt_size;
694 };
695
696 union pf_keth_rule_ptr {
697 struct pf_keth_rule *ptr;
698 uint32_t nr;
699 };
700
701 struct pf_keth_rule_addr {
702 uint8_t addr[ETHER_ADDR_LEN];
703 uint8_t mask[ETHER_ADDR_LEN];
704 bool neg;
705 uint8_t isset;
706 };
707
708 struct pf_keth_anchor;
709
710 TAILQ_HEAD(pf_keth_ruleq, pf_keth_rule);
711
712 struct pf_keth_ruleset {
713 struct pf_keth_ruleq rules[2];
714 struct pf_keth_rules {
715 struct pf_keth_ruleq *rules;
716 int open;
717 uint32_t ticket;
718 } active, inactive;
719 struct vnet *vnet;
720 struct pf_keth_anchor *anchor;
721 };
722
723 RB_HEAD(pf_keth_anchor_global, pf_keth_anchor);
724 RB_HEAD(pf_keth_anchor_node, pf_keth_anchor);
725 struct pf_keth_anchor {
726 RB_ENTRY(pf_keth_anchor) entry_node;
727 RB_ENTRY(pf_keth_anchor) entry_global;
728 struct pf_keth_anchor *parent;
729 struct pf_keth_anchor_node children;
730 char name[PF_ANCHOR_NAME_SIZE];
731 char path[MAXPATHLEN];
732 struct pf_keth_ruleset ruleset;
733 int refcnt; /* anchor rules */
734 uint8_t anchor_relative;
735 uint8_t anchor_wildcard;
736 };
737 RB_PROTOTYPE(pf_keth_anchor_node, pf_keth_anchor, entry_node,
738 pf_keth_anchor_compare);
739 RB_PROTOTYPE(pf_keth_anchor_global, pf_keth_anchor, entry_global,
740 pf_keth_anchor_compare);
741
742 struct pf_keth_rule {
743 #define PFE_SKIP_IFP 0
744 #define PFE_SKIP_DIR 1
745 #define PFE_SKIP_PROTO 2
746 #define PFE_SKIP_SRC_ADDR 3
747 #define PFE_SKIP_DST_ADDR 4
748 #define PFE_SKIP_SRC_IP_ADDR 5
749 #define PFE_SKIP_DST_IP_ADDR 6
750 #define PFE_SKIP_COUNT 7
751 union pf_keth_rule_ptr skip[PFE_SKIP_COUNT];
752
753 TAILQ_ENTRY(pf_keth_rule) entries;
754
755 struct pf_keth_anchor *anchor;
756 u_int8_t anchor_relative;
757 u_int8_t anchor_wildcard;
758
759 uint32_t nr;
760
761 bool quick;
762
763 /* Filter */
764 char ifname[IFNAMSIZ];
765 struct pfi_kkif *kif;
766 bool ifnot;
767 uint8_t direction;
768 uint16_t proto;
769 struct pf_keth_rule_addr src, dst;
770 struct pf_rule_addr ipsrc, ipdst;
771 char match_tagname[PF_TAG_NAME_SIZE];
772 uint16_t match_tag;
773 bool match_tag_not;
774
775
776 /* Stats */
777 counter_u64_t evaluations;
778 counter_u64_t packets[2];
779 counter_u64_t bytes[2];
780 time_t *timestamp;
781
782 /* Action */
783 char qname[PF_QNAME_SIZE];
784 int qid;
785 char tagname[PF_TAG_NAME_SIZE];
786 uint16_t tag;
787 char bridge_to_name[IFNAMSIZ];
788 struct pfi_kkif *bridge_to;
789 uint8_t action;
790 uint16_t dnpipe;
791 uint32_t dnflags;
792
793 char label[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE];
794 uint32_t ridentifier;
795 };
796
797 struct pf_kthreshold {
798 uint32_t limit;
799 uint32_t seconds;
800 struct counter_rate *cr;
801 };
802
803 RB_HEAD(pf_krule_global, pf_krule);
804 RB_PROTOTYPE(pf_krule_global, pf_krule, entry_global, pf_krule_compare);
805
806 struct pf_krule {
807 struct pf_rule_addr src;
808 struct pf_rule_addr dst;
809 struct pf_krule *skip[PF_SKIP_COUNT];
810 char label[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE];
811 uint32_t ridentifier;
812 char ifname[IFNAMSIZ];
813 char rcv_ifname[IFNAMSIZ];
814 char qname[PF_QNAME_SIZE];
815 char pqname[PF_QNAME_SIZE];
816 char tagname[PF_TAG_NAME_SIZE];
817 char match_tagname[PF_TAG_NAME_SIZE];
818
819 char overload_tblname[PF_TABLE_NAME_SIZE];
820
821 TAILQ_ENTRY(pf_krule) entries;
822 struct pf_kpool nat;
823 struct pf_kpool rdr;
824 struct pf_kpool route;
825 struct pf_kthreshold pktrate;
826
827 struct pf_counter_u64 evaluations;
828 struct pf_counter_u64 packets[2];
829 struct pf_counter_u64 bytes[2];
830 time_t *timestamp;
831
832 struct pfi_kkif *kif;
833 struct pfi_kkif *rcv_kif;
834 struct pf_kanchor *anchor;
835 struct pfr_ktable *overload_tbl;
836
837 pf_osfp_t os_fingerprint;
838
839 int32_t rtableid;
840 u_int32_t timeout[PFTM_MAX];
841 u_int32_t max_states;
842 u_int32_t max_src_nodes;
843 u_int32_t max_src_states;
844 u_int32_t max_src_conn;
845 struct {
846 u_int32_t limit;
847 u_int32_t seconds;
848 } max_src_conn_rate;
849 uint16_t max_pkt_size;
850 u_int16_t qid;
851 u_int16_t pqid;
852 u_int16_t dnpipe;
853 u_int16_t dnrpipe;
854 u_int32_t free_flags;
855 u_int32_t nr;
856 u_int32_t prob;
857 uid_t cuid;
858 pid_t cpid;
859
860 counter_u64_t states_cur;
861 counter_u64_t states_tot;
862 counter_u64_t src_nodes[PF_SN_MAX];
863
864 u_int16_t return_icmp;
865 u_int16_t return_icmp6;
866 u_int16_t max_mss;
867 u_int16_t tag;
868 u_int16_t match_tag;
869 u_int16_t scrub_flags;
870
871 struct pf_rule_uid uid;
872 struct pf_rule_gid gid;
873
874 u_int32_t rule_flag;
875 uint32_t rule_ref;
876 u_int8_t action;
877 u_int8_t direction;
878 u_int8_t log;
879 u_int8_t logif;
880 u_int8_t quick;
881 u_int8_t ifnot;
882 u_int8_t match_tag_not;
883 u_int8_t natpass;
884
885 u_int8_t keep_state;
886 sa_family_t af;
887 u_int8_t proto;
888 u_int8_t type;
889 u_int8_t code;
890 u_int8_t flags;
891 u_int8_t flagset;
892 u_int8_t min_ttl;
893 u_int8_t allow_opts;
894 u_int8_t rt;
895 u_int8_t return_ttl;
896 u_int8_t tos;
897 u_int8_t set_tos;
898 u_int8_t anchor_relative;
899 u_int8_t anchor_wildcard;
900
901 u_int8_t flush;
902 u_int8_t prio;
903 u_int8_t set_prio[2];
904 sa_family_t naf;
905 u_int8_t rcvifnot;
906
907 struct {
908 struct pf_addr addr;
909 u_int16_t port;
910 } divert;
911 u_int8_t md5sum[PF_MD5_DIGEST_LENGTH];
912 RB_ENTRY(pf_krule) entry_global;
913
914 #ifdef PF_WANT_32_TO_64_COUNTER
915 LIST_ENTRY(pf_krule) allrulelist;
916 bool allrulelinked;
917 #endif
918 };
919
920 struct pf_krule_item {
921 SLIST_ENTRY(pf_krule_item) entry;
922 struct pf_krule *r;
923 };
924
925 SLIST_HEAD(pf_krule_slist, pf_krule_item);
926
927 struct pf_ksrc_node {
928 LIST_ENTRY(pf_ksrc_node) entry;
929 struct pf_addr addr;
930 struct pf_addr raddr;
931 struct pf_krule_slist match_rules;
932 struct pf_krule *rule;
933 struct pfi_kkif *rkif;
934 counter_u64_t bytes[2];
935 counter_u64_t packets[2];
936 u_int32_t states;
937 u_int32_t conn;
938 struct pf_kthreshold conn_rate;
939 u_int32_t creation;
940 u_int32_t expire;
941 sa_family_t af;
942 sa_family_t naf;
943 u_int8_t ruletype;
944 pf_sn_types_t type;
945 struct mtx *lock;
946 };
947 #endif
948
949 struct pf_state_scrub {
950 struct timeval pfss_last; /* time received last packet */
951 u_int32_t pfss_tsecr; /* last echoed timestamp */
952 u_int32_t pfss_tsval; /* largest timestamp */
953 u_int32_t pfss_tsval0; /* original timestamp */
954 u_int16_t pfss_flags;
955 #define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */
956 #define PFSS_PAWS 0x0010 /* stricter PAWS checks */
957 #define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */
958 #define PFSS_DATA_TS 0x0040 /* timestamp on data packets */
959 #define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */
960 u_int8_t pfss_ttl; /* stashed TTL */
961 u_int8_t pad;
962 union {
963 u_int32_t pfss_ts_mod; /* timestamp modulation */
964 u_int32_t pfss_v_tag; /* SCTP verification tag */
965 };
966 };
967
968 struct pf_state_host {
969 struct pf_addr addr;
970 u_int16_t port;
971 u_int16_t pad;
972 };
973
974 struct pf_state_peer {
975 struct pf_state_scrub *scrub; /* state is scrubbed */
976 u_int32_t seqlo; /* Max sequence number sent */
977 u_int32_t seqhi; /* Max the other end ACKd + win */
978 u_int32_t seqdiff; /* Sequence number modulator */
979 u_int16_t max_win; /* largest window (pre scaling) */
980 u_int16_t mss; /* Maximum segment size option */
981 u_int8_t state; /* active state level */
982 u_int8_t wscale; /* window scaling factor */
983 u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */
984 u_int8_t pad[1];
985 };
986
987 /* Keep synced with struct pf_udp_endpoint. */
988 struct pf_udp_endpoint_cmp {
989 struct pf_addr addr;
990 uint16_t port;
991 sa_family_t af;
992 uint8_t pad[1];
993 };
994
995 struct pf_udp_endpoint {
996 struct pf_addr addr;
997 uint16_t port;
998 sa_family_t af;
999 uint8_t pad[1];
1000
1001 struct pf_udp_mapping *mapping;
1002 LIST_ENTRY(pf_udp_endpoint) entry;
1003 };
1004
1005 struct pf_udp_mapping {
1006 struct pf_udp_endpoint endpoints[2];
1007 u_int refs;
1008 };
1009
1010 /* Keep synced with struct pf_state_key. */
1011 struct pf_state_key_cmp {
1012 struct pf_addr addr[2];
1013 u_int16_t port[2];
1014 sa_family_t af;
1015 u_int8_t proto;
1016 u_int8_t pad[2];
1017 };
1018
1019 struct pf_state_key {
1020 struct pf_addr addr[2];
1021 u_int16_t port[2];
1022 sa_family_t af;
1023 u_int8_t proto;
1024 u_int8_t pad[2];
1025
1026 LIST_ENTRY(pf_state_key) entry;
1027 TAILQ_HEAD(, pf_kstate) states[2];
1028 };
1029
1030 #define PF_REVERSED_KEY(state, family) \
1031 (((state)->key[PF_SK_WIRE]->af != (state)->key[PF_SK_STACK]->af) && \
1032 ((state)->key[PF_SK_WIRE]->af != (family)) && \
1033 ((state)->direction == PF_IN))
1034
1035 /* Keep synced with struct pf_kstate. */
1036 struct pf_state_cmp {
1037 u_int64_t id;
1038 u_int32_t creatorid;
1039 u_int8_t direction;
1040 u_int8_t pad[3];
1041 };
1042
1043 struct pf_state_scrub_export {
1044 uint16_t pfss_flags;
1045 uint8_t pfss_ttl; /* stashed TTL */
1046 #define PF_SCRUB_FLAG_VALID 0x01
1047 uint8_t scrub_flag;
1048 uint32_t pfss_ts_mod; /* timestamp modulation */
1049 };
1050
1051 struct pf_state_key_export {
1052 struct pf_addr addr[2];
1053 uint16_t port[2];
1054 };
1055
1056 struct pf_state_peer_export {
1057 struct pf_state_scrub_export scrub; /* state is scrubbed */
1058 uint32_t seqlo; /* Max sequence number sent */
1059 uint32_t seqhi; /* Max the other end ACKd + win */
1060 uint32_t seqdiff; /* Sequence number modulator */
1061 uint16_t max_win; /* largest window (pre scaling) */
1062 uint16_t mss; /* Maximum segment size option */
1063 uint8_t state; /* active state level */
1064 uint8_t wscale; /* window scaling factor */
1065 uint8_t dummy[6];
1066 };
1067 _Static_assert(sizeof(struct pf_state_peer_export) == 32, "size incorrect");
1068
1069 struct pf_state_export {
1070 uint64_t version;
1071 #define PF_STATE_VERSION 20230404
1072 uint64_t id;
1073 char ifname[IFNAMSIZ];
1074 char orig_ifname[IFNAMSIZ];
1075 struct pf_state_key_export key[2];
1076 struct pf_state_peer_export src;
1077 struct pf_state_peer_export dst;
1078 struct pf_addr rt_addr;
1079 uint32_t rule;
1080 uint32_t anchor;
1081 uint32_t nat_rule;
1082 uint32_t creation;
1083 uint32_t expire;
1084 uint32_t spare0;
1085 uint64_t packets[2];
1086 uint64_t bytes[2];
1087 uint32_t creatorid;
1088 uint32_t spare1;
1089 sa_family_t af;
1090 uint8_t proto;
1091 uint8_t direction;
1092 uint8_t log;
1093 uint8_t state_flags_compat;
1094 uint8_t timeout;
1095 uint8_t sync_flags;
1096 uint8_t updates;
1097 uint16_t state_flags;
1098 uint16_t qid;
1099 uint16_t pqid;
1100 uint16_t dnpipe;
1101 uint16_t dnrpipe;
1102 int32_t rtableid;
1103 uint8_t min_ttl;
1104 uint8_t set_tos;
1105 uint16_t max_mss;
1106 uint8_t set_prio[2];
1107 uint8_t rt;
1108 char rt_ifname[IFNAMSIZ];
1109
1110 uint8_t spare[72];
1111 };
1112 _Static_assert(sizeof(struct pf_state_export) == 384, "size incorrect");
1113
1114 #ifdef _KERNEL
1115 struct pf_kstate {
1116 /*
1117 * Area shared with pf_state_cmp
1118 */
1119 u_int64_t id;
1120 u_int32_t creatorid;
1121 u_int8_t direction;
1122 u_int8_t pad[3];
1123 /*
1124 * end of the area
1125 */
1126
1127 u_int16_t state_flags;
1128 u_int8_t timeout;
1129 u_int8_t sync_state; /* PFSYNC_S_x */
1130 u_int8_t sync_updates;
1131 u_int refs;
1132 struct mtx *lock;
1133 TAILQ_ENTRY(pf_kstate) sync_list;
1134 TAILQ_ENTRY(pf_kstate) key_list[2];
1135 LIST_ENTRY(pf_kstate) entry;
1136 struct pf_state_peer src;
1137 struct pf_state_peer dst;
1138 struct pf_krule_slist match_rules;
1139 struct pf_krule *rule;
1140 struct pf_krule *anchor;
1141 struct pf_krule *nat_rule;
1142 struct pf_state_key *key[2]; /* addresses stack and wire */
1143 struct pf_udp_mapping *udp_mapping;
1144 struct pfi_kkif *kif;
1145 struct pfi_kkif *orig_kif; /* The real kif, even if we're a floating state (i.e. if == V_pfi_all). */
1146 struct pf_ksrc_node *sns[PF_SN_MAX];/* source nodes */
1147 u_int64_t packets[2];
1148 u_int64_t bytes[2];
1149 u_int64_t creation;
1150 u_int64_t expire;
1151 u_int32_t pfsync_time;
1152 struct pf_rule_actions act;
1153 u_int16_t tag;
1154 u_int16_t if_index_in;
1155 u_int16_t if_index_out;
1156 };
1157
1158 /*
1159 * 6 cache lines per struct, 10 structs per page.
1160 * Try to not grow the struct beyond that.
1161 */
1162 _Static_assert(sizeof(struct pf_kstate) <= 384, "pf_kstate size crosses 384 bytes");
1163
1164 enum pf_test_status {
1165 PF_TEST_FAIL = -1,
1166 PF_TEST_OK,
1167 PF_TEST_QUICK
1168 };
1169
1170 struct pf_test_ctx {
1171 enum pf_test_status test_status;
1172 struct pf_pdesc *pd;
1173 struct pf_rule_actions act;
1174 uint8_t icmpcode;
1175 uint8_t icmptype;
1176 int icmp_dir;
1177 int state_icmp;
1178 int tag;
1179 int rewrite;
1180 u_short reason;
1181 struct pf_src_node *sns[PF_SN_MAX];
1182 struct pf_krule_slist rules;
1183 struct pf_krule *nr;
1184 struct pf_krule *tr;
1185 struct pf_krule **rm;
1186 struct pf_krule *a;
1187 struct pf_krule **am;
1188 struct pf_kruleset **rsm;
1189 struct pf_kruleset *arsm;
1190 struct pf_kruleset *aruleset;
1191 struct pf_state_key *sk;
1192 struct pf_state_key *nk;
1193 struct tcphdr *th;
1194 struct pf_udp_mapping *udp_mapping;
1195 struct pf_kpool *nat_pool;
1196 uint16_t virtual_type;
1197 uint16_t virtual_id;
1198 int depth;
1199 };
1200
1201 #define PF_ANCHOR_STACK_MAX 32
1202 #endif
1203
1204 /*
1205 * Unified state structures for pulling states out of the kernel
1206 * used by pfsync(4) and the pf(4) ioctl.
1207 */
1208 struct pfsync_state_scrub {
1209 u_int16_t pfss_flags;
1210 u_int8_t pfss_ttl; /* stashed TTL */
1211 #define PFSYNC_SCRUB_FLAG_VALID 0x01
1212 u_int8_t scrub_flag;
1213 u_int32_t pfss_ts_mod; /* timestamp modulation */
1214 } __packed;
1215
1216 struct pfsync_state_peer {
1217 struct pfsync_state_scrub scrub; /* state is scrubbed */
1218 u_int32_t seqlo; /* Max sequence number sent */
1219 u_int32_t seqhi; /* Max the other end ACKd + win */
1220 u_int32_t seqdiff; /* Sequence number modulator */
1221 u_int16_t max_win; /* largest window (pre scaling) */
1222 u_int16_t mss; /* Maximum segment size option */
1223 u_int8_t state; /* active state level */
1224 u_int8_t wscale; /* window scaling factor */
1225 u_int8_t pad[6];
1226 } __packed;
1227
1228 struct pfsync_state_key {
1229 struct pf_addr addr[2];
1230 u_int16_t port[2];
1231 };
1232
1233 struct pfsync_state_1301 {
1234 u_int64_t id;
1235 char ifname[IFNAMSIZ];
1236 struct pfsync_state_key key[2];
1237 struct pfsync_state_peer src;
1238 struct pfsync_state_peer dst;
1239 struct pf_addr rt_addr;
1240 u_int32_t rule;
1241 u_int32_t anchor;
1242 u_int32_t nat_rule;
1243 u_int32_t creation;
1244 u_int32_t expire;
1245 u_int32_t packets[2][2];
1246 u_int32_t bytes[2][2];
1247 u_int32_t creatorid;
1248 sa_family_t af;
1249 u_int8_t proto;
1250 u_int8_t direction;
1251 u_int8_t __spare[2];
1252 u_int8_t log;
1253 u_int8_t state_flags;
1254 u_int8_t timeout;
1255 u_int8_t sync_flags;
1256 u_int8_t updates;
1257 } __packed;
1258
1259 struct pfsync_state_1400 {
1260 /* The beginning of the struct is compatible with previous versions */
1261 u_int64_t id;
1262 char ifname[IFNAMSIZ];
1263 struct pfsync_state_key key[2];
1264 struct pfsync_state_peer src;
1265 struct pfsync_state_peer dst;
1266 struct pf_addr rt_addr;
1267 u_int32_t rule;
1268 u_int32_t anchor;
1269 u_int32_t nat_rule;
1270 u_int32_t creation;
1271 u_int32_t expire;
1272 u_int32_t packets[2][2];
1273 u_int32_t bytes[2][2];
1274 u_int32_t creatorid;
1275 sa_family_t af;
1276 u_int8_t proto;
1277 u_int8_t direction;
1278 u_int16_t state_flags;
1279 u_int8_t log;
1280 u_int8_t __spare;
1281 u_int8_t timeout;
1282 u_int8_t sync_flags;
1283 u_int8_t updates;
1284 /* The rest is not */
1285 u_int16_t qid;
1286 u_int16_t pqid;
1287 u_int16_t dnpipe;
1288 u_int16_t dnrpipe;
1289 int32_t rtableid;
1290 u_int8_t min_ttl;
1291 u_int8_t set_tos;
1292 u_int16_t max_mss;
1293 u_int8_t set_prio[2];
1294 u_int8_t rt;
1295 char rt_ifname[IFNAMSIZ];
1296
1297 } __packed;
1298
1299 union pfsync_state_union {
1300 struct pfsync_state_1301 pfs_1301;
1301 struct pfsync_state_1400 pfs_1400;
1302 } __packed;
1303
1304 #ifdef _KERNEL
1305 /* pfsync */
1306 typedef int pfsync_state_import_t(union pfsync_state_union *, int, int);
1307 typedef void pfsync_insert_state_t(struct pf_kstate *);
1308 typedef void pfsync_update_state_t(struct pf_kstate *);
1309 typedef void pfsync_delete_state_t(struct pf_kstate *);
1310 typedef void pfsync_clear_states_t(u_int32_t, const char *);
1311 typedef int pfsync_defer_t(struct pf_kstate *, struct mbuf *);
1312 typedef void pfsync_detach_ifnet_t(struct ifnet *);
1313 typedef void pflow_export_state_t(const struct pf_kstate *);
1314 typedef bool pf_addr_filter_func_t(const sa_family_t, const struct pf_addr *);
1315
1316 VNET_DECLARE(pfsync_state_import_t *, pfsync_state_import_ptr);
1317 #define V_pfsync_state_import_ptr VNET(pfsync_state_import_ptr)
1318 VNET_DECLARE(pfsync_insert_state_t *, pfsync_insert_state_ptr);
1319 #define V_pfsync_insert_state_ptr VNET(pfsync_insert_state_ptr)
1320 VNET_DECLARE(pfsync_update_state_t *, pfsync_update_state_ptr);
1321 #define V_pfsync_update_state_ptr VNET(pfsync_update_state_ptr)
1322 VNET_DECLARE(pfsync_delete_state_t *, pfsync_delete_state_ptr);
1323 #define V_pfsync_delete_state_ptr VNET(pfsync_delete_state_ptr)
1324 VNET_DECLARE(pfsync_clear_states_t *, pfsync_clear_states_ptr);
1325 #define V_pfsync_clear_states_ptr VNET(pfsync_clear_states_ptr)
1326 VNET_DECLARE(pfsync_defer_t *, pfsync_defer_ptr);
1327 #define V_pfsync_defer_ptr VNET(pfsync_defer_ptr)
1328 VNET_DECLARE(pflow_export_state_t *, pflow_export_state_ptr);
1329 #define V_pflow_export_state_ptr VNET(pflow_export_state_ptr)
1330 extern pfsync_detach_ifnet_t *pfsync_detach_ifnet_ptr;
1331
1332 void pfsync_state_export(union pfsync_state_union *,
1333 struct pf_kstate *, int);
1334 void pf_state_export(struct pf_state_export *,
1335 struct pf_kstate *);
1336
1337 /* pflog */
1338 struct pf_kruleset;
1339 struct pf_pdesc;
1340 typedef int pflog_packet_t(uint8_t, u_int8_t,
1341 struct pf_krule *, struct pf_krule *, struct pf_kruleset *,
1342 struct pf_pdesc *, int, struct pf_krule *);
1343 extern pflog_packet_t *pflog_packet_ptr;
1344
1345 #endif /* _KERNEL */
1346
1347 #define PFSYNC_FLAG_SRCNODE 0x04
1348 #define PFSYNC_FLAG_NATSRCNODE 0x08
1349
1350 /* for copies to/from network byte order */
1351 /* ioctl interface also uses network byte order */
1352 #define pf_state_peer_hton(s,d) do { \
1353 (d)->seqlo = htonl((s)->seqlo); \
1354 (d)->seqhi = htonl((s)->seqhi); \
1355 (d)->seqdiff = htonl((s)->seqdiff); \
1356 (d)->max_win = htons((s)->max_win); \
1357 (d)->mss = htons((s)->mss); \
1358 (d)->state = (s)->state; \
1359 (d)->wscale = (s)->wscale; \
1360 if ((s)->scrub) { \
1361 (d)->scrub.pfss_flags = \
1362 htons((s)->scrub->pfss_flags & PFSS_TIMESTAMP); \
1363 (d)->scrub.pfss_ttl = (s)->scrub->pfss_ttl; \
1364 (d)->scrub.pfss_ts_mod = htonl((s)->scrub->pfss_ts_mod);\
1365 (d)->scrub.scrub_flag = PFSYNC_SCRUB_FLAG_VALID; \
1366 } \
1367 } while (0)
1368
1369 #define pf_state_peer_ntoh(s,d) do { \
1370 (d)->seqlo = ntohl((s)->seqlo); \
1371 (d)->seqhi = ntohl((s)->seqhi); \
1372 (d)->seqdiff = ntohl((s)->seqdiff); \
1373 (d)->max_win = ntohs((s)->max_win); \
1374 (d)->mss = ntohs((s)->mss); \
1375 (d)->state = (s)->state; \
1376 (d)->wscale = (s)->wscale; \
1377 if ((s)->scrub.scrub_flag == PFSYNC_SCRUB_FLAG_VALID && \
1378 (d)->scrub != NULL) { \
1379 (d)->scrub->pfss_flags = \
1380 ntohs((s)->scrub.pfss_flags) & PFSS_TIMESTAMP; \
1381 (d)->scrub->pfss_ttl = (s)->scrub.pfss_ttl; \
1382 (d)->scrub->pfss_ts_mod = ntohl((s)->scrub.pfss_ts_mod);\
1383 } \
1384 } while (0)
1385
1386 #define pf_state_counter_hton(s,d) do { \
1387 d[0] = htonl((s>>32)&0xffffffff); \
1388 d[1] = htonl(s&0xffffffff); \
1389 } while (0)
1390
1391 #define pf_state_counter_from_pfsync(s) \
1392 (((u_int64_t)(s[0])<<32) | (u_int64_t)(s[1]))
1393
1394 #define pf_state_counter_ntoh(s,d) do { \
1395 d = ntohl(s[0]); \
1396 d = d<<32; \
1397 d += ntohl(s[1]); \
1398 } while (0)
1399
1400 TAILQ_HEAD(pf_krulequeue, pf_krule);
1401
1402 struct pf_kanchor;
1403
1404 struct pf_kruleset {
1405 struct {
1406 struct pf_krulequeue queues[2];
1407 struct {
1408 struct pf_krulequeue *ptr;
1409 struct pf_krule **ptr_array;
1410 u_int32_t rcount;
1411 u_int32_t ticket;
1412 int open;
1413 struct pf_krule_global *tree;
1414 } active, inactive;
1415 } rules[PF_RULESET_MAX];
1416 struct pf_kanchor *anchor;
1417 u_int32_t tticket;
1418 int tables;
1419 int topen;
1420 };
1421
1422 RB_HEAD(pf_kanchor_global, pf_kanchor);
1423 RB_HEAD(pf_kanchor_node, pf_kanchor);
1424 struct pf_kanchor {
1425 RB_ENTRY(pf_kanchor) entry_global;
1426 RB_ENTRY(pf_kanchor) entry_node;
1427 struct pf_kanchor *parent;
1428 struct pf_kanchor_node children;
1429 char name[PF_ANCHOR_NAME_SIZE];
1430 char path[MAXPATHLEN];
1431 struct pf_kruleset ruleset;
1432 int refcnt; /* anchor rules */
1433 };
1434 RB_PROTOTYPE(pf_kanchor_global, pf_kanchor, entry_global, pf_anchor_compare);
1435 RB_PROTOTYPE(pf_kanchor_node, pf_kanchor, entry_node, pf_kanchor_compare);
1436
1437 #define PF_RESERVED_ANCHOR "_pf"
1438
1439 #define PFR_TFLAG_PERSIST 0x00000001
1440 #define PFR_TFLAG_CONST 0x00000002
1441 #define PFR_TFLAG_ACTIVE 0x00000004
1442 #define PFR_TFLAG_INACTIVE 0x00000008
1443 #define PFR_TFLAG_REFERENCED 0x00000010
1444 #define PFR_TFLAG_REFDANCHOR 0x00000020
1445 #define PFR_TFLAG_COUNTERS 0x00000040
1446 /* Adjust masks below when adding flags. */
1447 #define PFR_TFLAG_USRMASK (PFR_TFLAG_PERSIST | \
1448 PFR_TFLAG_CONST | \
1449 PFR_TFLAG_COUNTERS)
1450 #define PFR_TFLAG_SETMASK (PFR_TFLAG_ACTIVE | \
1451 PFR_TFLAG_INACTIVE | \
1452 PFR_TFLAG_REFERENCED | \
1453 PFR_TFLAG_REFDANCHOR)
1454 #define PFR_TFLAG_ALLMASK (PFR_TFLAG_PERSIST | \
1455 PFR_TFLAG_CONST | \
1456 PFR_TFLAG_ACTIVE | \
1457 PFR_TFLAG_INACTIVE | \
1458 PFR_TFLAG_REFERENCED | \
1459 PFR_TFLAG_REFDANCHOR | \
1460 PFR_TFLAG_COUNTERS)
1461
1462 struct pf_keth_anchor_stackframe;
1463
1464 struct pfr_table {
1465 char pfrt_anchor[MAXPATHLEN];
1466 char pfrt_name[PF_TABLE_NAME_SIZE];
1467 u_int32_t pfrt_flags;
1468 u_int8_t pfrt_fback;
1469 };
1470
1471 enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED,
1472 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE,
1473 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_NOCOUNT, PFR_FB_MAX };
1474
1475 struct pfr_addr {
1476 union {
1477 struct in_addr _pfra_ip4addr;
1478 struct in6_addr _pfra_ip6addr;
1479 } pfra_u;
1480 u_int8_t pfra_af;
1481 u_int8_t pfra_net;
1482 u_int8_t pfra_not;
1483 u_int8_t pfra_fback;
1484 };
1485 #define pfra_ip4addr pfra_u._pfra_ip4addr
1486 #define pfra_ip6addr pfra_u._pfra_ip6addr
1487
1488 enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX };
1489 enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX };
1490 enum { PFR_TYPE_PACKETS, PFR_TYPE_BYTES, PFR_TYPE_MAX };
1491 #define PFR_NUM_COUNTERS (PFR_DIR_MAX * PFR_OP_ADDR_MAX * PFR_TYPE_MAX)
1492 #define PFR_OP_XPASS PFR_OP_ADDR_MAX
1493
1494 struct pfr_astats {
1495 struct pfr_addr pfras_a;
1496 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
1497 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
1498 time_t pfras_tzero;
1499 };
1500
1501 enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX };
1502
1503 struct pfr_tstats {
1504 struct pfr_table pfrts_t;
1505 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
1506 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
1507 u_int64_t pfrts_match;
1508 u_int64_t pfrts_nomatch;
1509 time_t pfrts_tzero;
1510 int pfrts_cnt;
1511 int pfrts_refcnt[PFR_REFCNT_MAX];
1512 };
1513
1514 #ifdef _KERNEL
1515
1516 struct pfr_kstate_counter {
1517 counter_u64_t pkc_pcpu;
1518 u_int64_t pkc_zero;
1519 };
1520
1521 static inline int
pfr_kstate_counter_init(struct pfr_kstate_counter * pfrc,int flags)1522 pfr_kstate_counter_init(struct pfr_kstate_counter *pfrc, int flags)
1523 {
1524
1525 pfrc->pkc_zero = 0;
1526 pfrc->pkc_pcpu = counter_u64_alloc(flags);
1527 if (pfrc->pkc_pcpu == NULL)
1528 return (ENOMEM);
1529 return (0);
1530 }
1531
1532 static inline void
pfr_kstate_counter_deinit(struct pfr_kstate_counter * pfrc)1533 pfr_kstate_counter_deinit(struct pfr_kstate_counter *pfrc)
1534 {
1535
1536 counter_u64_free(pfrc->pkc_pcpu);
1537 }
1538
1539 static inline u_int64_t
pfr_kstate_counter_fetch(struct pfr_kstate_counter * pfrc)1540 pfr_kstate_counter_fetch(struct pfr_kstate_counter *pfrc)
1541 {
1542 u_int64_t c;
1543
1544 c = counter_u64_fetch(pfrc->pkc_pcpu);
1545 c -= pfrc->pkc_zero;
1546 return (c);
1547 }
1548
1549 static inline void
pfr_kstate_counter_zero(struct pfr_kstate_counter * pfrc)1550 pfr_kstate_counter_zero(struct pfr_kstate_counter *pfrc)
1551 {
1552 u_int64_t c;
1553
1554 c = counter_u64_fetch(pfrc->pkc_pcpu);
1555 pfrc->pkc_zero = c;
1556 }
1557
1558 static inline void
pfr_kstate_counter_add(struct pfr_kstate_counter * pfrc,int64_t n)1559 pfr_kstate_counter_add(struct pfr_kstate_counter *pfrc, int64_t n)
1560 {
1561
1562 counter_u64_add(pfrc->pkc_pcpu, n);
1563 }
1564
1565 struct pfr_ktstats {
1566 struct pfr_table pfrts_t;
1567 struct pfr_kstate_counter pfrkts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
1568 struct pfr_kstate_counter pfrkts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
1569 struct pfr_kstate_counter pfrkts_match;
1570 struct pfr_kstate_counter pfrkts_nomatch;
1571 time_t pfrkts_tzero;
1572 int pfrkts_cnt;
1573 int pfrkts_refcnt[PFR_REFCNT_MAX];
1574 };
1575
1576 #endif /* _KERNEL */
1577
1578 #define pfrts_name pfrts_t.pfrt_name
1579 #define pfrts_flags pfrts_t.pfrt_flags
1580
1581 #ifndef _SOCKADDR_UNION_DEFINED
1582 #define _SOCKADDR_UNION_DEFINED
1583 union sockaddr_union {
1584 struct sockaddr sa;
1585 struct sockaddr_in sin;
1586 struct sockaddr_in6 sin6;
1587 };
1588 #endif /* _SOCKADDR_UNION_DEFINED */
1589
1590 struct pfr_kcounters {
1591 counter_u64_t pfrkc_counters;
1592 time_t pfrkc_tzero;
1593 };
1594 #define pfr_kentry_counter(kc, dir, op, t) \
1595 ((kc)->pfrkc_counters + \
1596 (dir) * PFR_OP_ADDR_MAX * PFR_TYPE_MAX + (op) * PFR_TYPE_MAX + (t))
1597
1598 #ifdef _KERNEL
1599 SLIST_HEAD(pfr_kentryworkq, pfr_kentry);
1600 struct pfr_kentry {
1601 struct radix_node pfrke_node[2];
1602 union sockaddr_union pfrke_sa;
1603 SLIST_ENTRY(pfr_kentry) pfrke_workq;
1604 struct pfr_kcounters pfrke_counters;
1605 u_int8_t pfrke_af;
1606 u_int8_t pfrke_net;
1607 u_int8_t pfrke_not;
1608 u_int8_t pfrke_mark;
1609 };
1610
1611 SLIST_HEAD(pfr_ktableworkq, pfr_ktable);
1612 RB_HEAD(pfr_ktablehead, pfr_ktable);
1613 struct pfr_ktable {
1614 struct pfr_ktstats pfrkt_kts;
1615 RB_ENTRY(pfr_ktable) pfrkt_tree;
1616 SLIST_ENTRY(pfr_ktable) pfrkt_workq;
1617 struct radix_node_head *pfrkt_ip4;
1618 struct radix_node_head *pfrkt_ip6;
1619 struct pfr_ktable *pfrkt_shadow;
1620 struct pfr_ktable *pfrkt_root;
1621 struct pf_kruleset *pfrkt_rs;
1622 long pfrkt_larg;
1623 int pfrkt_nflags;
1624 };
1625 #define pfrkt_t pfrkt_kts.pfrts_t
1626 #define pfrkt_name pfrkt_t.pfrt_name
1627 #define pfrkt_anchor pfrkt_t.pfrt_anchor
1628 #define pfrkt_ruleset pfrkt_t.pfrt_ruleset
1629 #define pfrkt_flags pfrkt_t.pfrt_flags
1630 #define pfrkt_cnt pfrkt_kts.pfrkts_cnt
1631 #define pfrkt_refcnt pfrkt_kts.pfrkts_refcnt
1632 #define pfrkt_packets pfrkt_kts.pfrkts_packets
1633 #define pfrkt_bytes pfrkt_kts.pfrkts_bytes
1634 #define pfrkt_match pfrkt_kts.pfrkts_match
1635 #define pfrkt_nomatch pfrkt_kts.pfrkts_nomatch
1636 #define pfrkt_tzero pfrkt_kts.pfrkts_tzero
1637 #endif
1638
1639 #ifdef _KERNEL
1640 struct pfi_kkif {
1641 char pfik_name[IFNAMSIZ];
1642 union {
1643 RB_ENTRY(pfi_kkif) _pfik_tree;
1644 LIST_ENTRY(pfi_kkif) _pfik_list;
1645 } _pfik_glue;
1646 #define pfik_tree _pfik_glue._pfik_tree
1647 #define pfik_list _pfik_glue._pfik_list
1648 struct pf_counter_u64 pfik_packets[2][2][2];
1649 struct pf_counter_u64 pfik_bytes[2][2][2];
1650 time_t pfik_tzero;
1651 u_int pfik_flags;
1652 struct ifnet *pfik_ifp;
1653 struct ifg_group *pfik_group;
1654 u_int pfik_rulerefs;
1655 TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs;
1656 #ifdef PF_WANT_32_TO_64_COUNTER
1657 LIST_ENTRY(pfi_kkif) pfik_allkiflist;
1658 #endif
1659 };
1660 #endif
1661
1662 #define PFI_IFLAG_REFS 0x0001 /* has state references */
1663 #define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */
1664 #define PFI_IFLAG_ANY 0x0200 /* match any non-loopback interface */
1665
1666 #ifdef _KERNEL
1667 struct pf_sctp_multihome_job;
1668 TAILQ_HEAD(pf_sctp_multihome_jobs, pf_sctp_multihome_job);
1669
1670 struct pf_pdesc {
1671 struct {
1672 int done;
1673 uid_t uid;
1674 gid_t gid;
1675 } lookup;
1676 u_int64_t tot_len; /* Make Mickey money */
1677 union pf_headers {
1678 struct tcphdr tcp;
1679 struct udphdr udp;
1680 struct sctphdr sctp;
1681 struct icmp icmp;
1682 #ifdef INET6
1683 struct icmp6_hdr icmp6;
1684 #endif /* INET6 */
1685 char any[0];
1686 } hdr;
1687
1688 struct pf_addr nsaddr; /* src address after NAT */
1689 struct pf_addr ndaddr; /* dst address after NAT */
1690
1691 struct pfi_kkif *kif; /* incomming interface */
1692 struct mbuf *m;
1693
1694 struct pf_addr *src; /* src address */
1695 struct pf_addr *dst; /* dst address */
1696 struct pf_addr osrc;
1697 struct pf_addr odst;
1698 u_int16_t *pcksum; /* proto cksum */
1699 u_int16_t *sport;
1700 u_int16_t *dport;
1701 u_int16_t osport;
1702 u_int16_t odport;
1703 u_int16_t nsport; /* src port after NAT */
1704 u_int16_t ndport; /* dst port after NAT */
1705 struct pf_mtag *pf_mtag;
1706 struct pf_rule_actions act;
1707
1708 u_int32_t off; /* protocol header offset */
1709 bool df; /* IPv4 Don't fragment flag. */
1710 u_int32_t hdrlen; /* protocol header length */
1711 u_int32_t p_len; /* total length of protocol payload */
1712 u_int32_t extoff; /* extentsion header offset */
1713 u_int32_t fragoff; /* fragment header offset */
1714 u_int32_t jumbolen; /* length from v6 jumbo header */
1715 u_int32_t badopts; /* v4 options or v6 routing headers */
1716
1717 u_int16_t *ip_sum;
1718 u_int16_t flags; /* Let SCRUB trigger behavior in
1719 * state code. Easier than tags */
1720 #define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */
1721 u_int16_t virtual_proto;
1722 #define PF_VPROTO_FRAGMENT 256
1723 sa_family_t af;
1724 sa_family_t naf;
1725 u_int8_t proto;
1726 u_int8_t tos;
1727 u_int8_t ttl;
1728 u_int8_t dir; /* direction */
1729 u_int8_t sidx; /* key index for source */
1730 u_int8_t didx; /* key index for destination */
1731 #define PFDESC_SCTP_INIT 0x0001
1732 #define PFDESC_SCTP_INIT_ACK 0x0002
1733 #define PFDESC_SCTP_COOKIE 0x0004
1734 #define PFDESC_SCTP_COOKIE_ACK 0x0008
1735 #define PFDESC_SCTP_ABORT 0x0010
1736 #define PFDESC_SCTP_SHUTDOWN 0x0020
1737 #define PFDESC_SCTP_SHUTDOWN_COMPLETE 0x0040
1738 #define PFDESC_SCTP_DATA 0x0080
1739 #define PFDESC_SCTP_ASCONF 0x0100
1740 #define PFDESC_SCTP_HEARTBEAT 0x0200
1741 #define PFDESC_SCTP_HEARTBEAT_ACK 0x0400
1742 #define PFDESC_SCTP_OTHER 0x0800
1743 #define PFDESC_SCTP_ADD_IP 0x1000
1744 u_int16_t sctp_flags;
1745 u_int32_t sctp_initiate_tag;
1746 u_int16_t sctp_dummy_sum;
1747 struct pf_krule *related_rule;
1748
1749 struct pf_sctp_multihome_jobs sctp_multihome_jobs;
1750 };
1751
1752 struct pf_sctp_multihome_job {
1753 TAILQ_ENTRY(pf_sctp_multihome_job) next;
1754 struct pf_pdesc pd;
1755 struct pf_addr src;
1756 struct pf_addr dst;
1757 int op;
1758 };
1759
1760 #endif
1761
1762 /* flags for RDR options */
1763 #define PF_DPORT_RANGE 0x01 /* Dest port uses range */
1764 #define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */
1765
1766 /* UDP state enumeration */
1767 #define PFUDPS_NO_TRAFFIC 0
1768 #define PFUDPS_SINGLE 1
1769 #define PFUDPS_MULTIPLE 2
1770
1771 #define PFUDPS_NSTATES 3 /* number of state levels */
1772
1773 #define PFUDPS_NAMES { \
1774 "NO_TRAFFIC", \
1775 "SINGLE", \
1776 "MULTIPLE", \
1777 NULL \
1778 }
1779
1780 /* Other protocol state enumeration */
1781 #define PFOTHERS_NO_TRAFFIC 0
1782 #define PFOTHERS_SINGLE 1
1783 #define PFOTHERS_MULTIPLE 2
1784
1785 #define PFOTHERS_NSTATES 3 /* number of state levels */
1786
1787 #define PFOTHERS_NAMES { \
1788 "NO_TRAFFIC", \
1789 "SINGLE", \
1790 "MULTIPLE", \
1791 NULL \
1792 }
1793
1794 #define ACTION_SET(a, x) \
1795 do { \
1796 if ((a) != NULL) \
1797 *(a) = (x); \
1798 } while (0)
1799
1800 #define REASON_SET(a, x) \
1801 do { \
1802 SDT_PROBE2(pf, , test, reason_set, x, __LINE__); \
1803 if ((a) != NULL) \
1804 *(a) = (x); \
1805 if (x < PFRES_MAX) \
1806 counter_u64_add(V_pf_status.counters[x], 1); \
1807 } while (0)
1808
1809 enum pf_syncookies_mode {
1810 PF_SYNCOOKIES_NEVER = 0,
1811 PF_SYNCOOKIES_ALWAYS = 1,
1812 PF_SYNCOOKIES_ADAPTIVE = 2,
1813 PF_SYNCOOKIES_MODE_MAX = PF_SYNCOOKIES_ADAPTIVE
1814 };
1815
1816 #define PF_SYNCOOKIES_HIWATPCT 25
1817 #define PF_SYNCOOKIES_LOWATPCT (PF_SYNCOOKIES_HIWATPCT / 2)
1818
1819 #ifdef _KERNEL
1820 struct pf_kstatus {
1821 counter_u64_t counters[PFRES_MAX]; /* reason for passing/dropping */
1822 counter_u64_t lcounters[KLCNT_MAX]; /* limit counters */
1823 struct pf_counter_u64 fcounters[FCNT_MAX]; /* state operation counters */
1824 counter_u64_t scounters[SCNT_MAX]; /* src_node operation counters */
1825 uint32_t states;
1826 uint32_t src_nodes;
1827 uint32_t running;
1828 uint32_t since;
1829 uint32_t debug;
1830 uint32_t hostid;
1831 char ifname[IFNAMSIZ];
1832 uint8_t pf_chksum[PF_MD5_DIGEST_LENGTH];
1833 bool keep_counters;
1834 enum pf_syncookies_mode syncookies_mode;
1835 bool syncookies_active;
1836 uint64_t syncookies_inflight[2];
1837 uint32_t states_halfopen;
1838 uint32_t reass;
1839 };
1840 #endif
1841
1842 struct pf_divert {
1843 union {
1844 struct in_addr ipv4;
1845 struct in6_addr ipv6;
1846 } addr;
1847 u_int16_t port;
1848 };
1849
1850 #define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */
1851 #define PFR_KENTRY_HIWAT 200000 /* Number of table entries */
1852
1853 struct pf_fragment_tag {
1854 uint16_t ft_hdrlen; /* header length of reassembled pkt */
1855 uint16_t ft_extoff; /* last extension header offset or 0 */
1856 uint16_t ft_maxlen; /* maximum fragment payload length */
1857 uint32_t ft_id; /* fragment id */
1858 };
1859
1860 /*
1861 * Limit the length of the fragment queue traversal. Remember
1862 * search entry points based on the fragment offset.
1863 */
1864 #define PF_FRAG_ENTRY_POINTS 16
1865
1866 /*
1867 * The number of entries in the fragment queue must be limited
1868 * to avoid DoS by linear searching. Instead of a global limit,
1869 * use a limit per entry point. For large packets these sum up.
1870 */
1871 #define PF_FRAG_ENTRY_LIMIT 64
1872
1873 /*
1874 * ioctl parameter structures
1875 */
1876
1877 struct pfioc_pooladdr {
1878 u_int32_t action;
1879 u_int32_t ticket;
1880 u_int32_t nr;
1881 u_int32_t r_num;
1882 u_int8_t r_action;
1883 u_int8_t r_last;
1884 u_int8_t af;
1885 char anchor[MAXPATHLEN];
1886 struct pf_pooladdr addr;
1887 };
1888
1889 struct pfioc_rule {
1890 u_int32_t action;
1891 u_int32_t ticket;
1892 u_int32_t pool_ticket;
1893 u_int32_t nr;
1894 char anchor[MAXPATHLEN];
1895 char anchor_call[MAXPATHLEN];
1896 struct pf_rule rule;
1897 };
1898
1899 struct pfioc_natlook {
1900 struct pf_addr saddr;
1901 struct pf_addr daddr;
1902 struct pf_addr rsaddr;
1903 struct pf_addr rdaddr;
1904 u_int16_t sport;
1905 u_int16_t dport;
1906 u_int16_t rsport;
1907 u_int16_t rdport;
1908 sa_family_t af;
1909 u_int8_t proto;
1910 u_int8_t direction;
1911 };
1912
1913 struct pfioc_state {
1914 struct pfsync_state_1301 state;
1915 };
1916
1917 struct pfioc_src_node_kill {
1918 sa_family_t psnk_af;
1919 struct pf_rule_addr psnk_src;
1920 struct pf_rule_addr psnk_dst;
1921 u_int psnk_killed;
1922 };
1923
1924 #ifdef _KERNEL
1925 struct pf_kstate_kill {
1926 struct pf_state_cmp psk_pfcmp;
1927 sa_family_t psk_af;
1928 int psk_proto;
1929 struct pf_rule_addr psk_src;
1930 struct pf_rule_addr psk_dst;
1931 struct pf_rule_addr psk_rt_addr;
1932 char psk_ifname[IFNAMSIZ];
1933 char psk_label[PF_RULE_LABEL_SIZE];
1934 u_int psk_killed;
1935 bool psk_kill_match;
1936 bool psk_nat;
1937 };
1938 #endif
1939
1940 struct pfioc_state_kill {
1941 struct pf_state_cmp psk_pfcmp;
1942 sa_family_t psk_af;
1943 int psk_proto;
1944 struct pf_rule_addr psk_src;
1945 struct pf_rule_addr psk_dst;
1946 char psk_ifname[IFNAMSIZ];
1947 char psk_label[PF_RULE_LABEL_SIZE];
1948 u_int psk_killed;
1949 };
1950
1951 struct pfioc_states {
1952 int ps_len;
1953 union {
1954 void *ps_buf;
1955 struct pfsync_state_1301 *ps_states;
1956 };
1957 };
1958
1959 struct pfioc_states_v2 {
1960 int ps_len;
1961 uint64_t ps_req_version;
1962 union {
1963 void *ps_buf;
1964 struct pf_state_export *ps_states;
1965 };
1966 };
1967
1968 struct pfioc_src_nodes {
1969 int psn_len;
1970 union {
1971 void *psn_buf;
1972 struct pf_src_node *psn_src_nodes;
1973 };
1974 };
1975
1976 struct pfioc_if {
1977 char ifname[IFNAMSIZ];
1978 };
1979
1980 struct pfioc_tm {
1981 int timeout;
1982 int seconds;
1983 };
1984
1985 struct pfioc_limit {
1986 int index;
1987 unsigned limit;
1988 };
1989
1990 struct pfioc_altq_v0 {
1991 u_int32_t action;
1992 u_int32_t ticket;
1993 u_int32_t nr;
1994 struct pf_altq_v0 altq;
1995 };
1996
1997 struct pfioc_altq_v1 {
1998 u_int32_t action;
1999 u_int32_t ticket;
2000 u_int32_t nr;
2001 /*
2002 * Placed here so code that only uses the above parameters can be
2003 * written entirely in terms of the v0 or v1 type.
2004 */
2005 u_int32_t version;
2006 struct pf_altq_v1 altq;
2007 };
2008
2009 /*
2010 * Latest version of struct pfioc_altq_vX. This must move in lock-step with
2011 * the latest version of struct pf_altq_vX as it has that struct as a
2012 * member.
2013 */
2014 #define PFIOC_ALTQ_VERSION PF_ALTQ_VERSION
2015
2016 struct pfioc_qstats_v0 {
2017 u_int32_t ticket;
2018 u_int32_t nr;
2019 void *buf;
2020 int nbytes;
2021 u_int8_t scheduler;
2022 };
2023
2024 struct pfioc_qstats_v1 {
2025 u_int32_t ticket;
2026 u_int32_t nr;
2027 void *buf;
2028 int nbytes;
2029 u_int8_t scheduler;
2030 /*
2031 * Placed here so code that only uses the above parameters can be
2032 * written entirely in terms of the v0 or v1 type.
2033 */
2034 u_int32_t version; /* Requested version of stats struct */
2035 };
2036
2037 /* Latest version of struct pfioc_qstats_vX */
2038 #define PFIOC_QSTATS_VERSION 1
2039
2040 struct pfioc_ruleset {
2041 u_int32_t nr;
2042 char path[MAXPATHLEN];
2043 char name[PF_ANCHOR_NAME_SIZE];
2044 };
2045
2046 #define PF_RULESET_ALTQ (PF_RULESET_MAX)
2047 #define PF_RULESET_TABLE (PF_RULESET_MAX+1)
2048 #define PF_RULESET_ETH (PF_RULESET_MAX+2)
2049 struct pfioc_trans {
2050 int size; /* number of elements */
2051 int esize; /* size of each element in bytes */
2052 struct pfioc_trans_e {
2053 int rs_num;
2054 char anchor[MAXPATHLEN];
2055 u_int32_t ticket;
2056 } *array;
2057 };
2058
2059 #define PFR_FLAG_ATOMIC 0x00000001 /* unused */
2060 #define PFR_FLAG_DUMMY 0x00000002
2061 #define PFR_FLAG_FEEDBACK 0x00000004
2062 #define PFR_FLAG_CLSTATS 0x00000008
2063 #define PFR_FLAG_ADDRSTOO 0x00000010
2064 #define PFR_FLAG_REPLACE 0x00000020
2065 #define PFR_FLAG_ALLRSETS 0x00000040
2066 #define PFR_FLAG_ALLMASK 0x0000007F
2067 #ifdef _KERNEL
2068 #define PFR_FLAG_USERIOCTL 0x10000000
2069 #endif
2070
2071 struct pfioc_table {
2072 struct pfr_table pfrio_table;
2073 void *pfrio_buffer;
2074 int pfrio_esize;
2075 int pfrio_size;
2076 int pfrio_size2;
2077 int pfrio_nadd;
2078 int pfrio_ndel;
2079 int pfrio_nchange;
2080 int pfrio_flags;
2081 u_int32_t pfrio_ticket;
2082 };
2083 #define pfrio_exists pfrio_nadd
2084 #define pfrio_nzero pfrio_nadd
2085 #define pfrio_nmatch pfrio_nadd
2086 #define pfrio_naddr pfrio_size2
2087 #define pfrio_setflag pfrio_size2
2088 #define pfrio_clrflag pfrio_nadd
2089
2090 struct pfioc_iface {
2091 char pfiio_name[IFNAMSIZ];
2092 void *pfiio_buffer;
2093 int pfiio_esize;
2094 int pfiio_size;
2095 int pfiio_nzero;
2096 int pfiio_flags;
2097 };
2098
2099 /*
2100 * ioctl operations
2101 */
2102
2103 #define DIOCSTART _IO ('D', 1)
2104 #define DIOCSTOP _IO ('D', 2)
2105 #define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule)
2106 #define DIOCADDRULENV _IOWR('D', 4, struct pfioc_nv)
2107 #define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule)
2108 #define DIOCGETRULENV _IOWR('D', 7, struct pfioc_nv)
2109 #define DIOCCLRSTATESNV _IOWR('D', 18, struct pfioc_nv)
2110 #define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state)
2111 #define DIOCGETSTATENV _IOWR('D', 19, struct pfioc_nv)
2112 #define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if)
2113 #define DIOCGETSTATUSNV _IOWR('D', 21, struct pfioc_nv)
2114 #define DIOCCLRSTATUS _IO ('D', 22)
2115 #define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook)
2116 #define DIOCSETDEBUG _IOWR('D', 24, u_int32_t)
2117 #ifdef COMPAT_FREEBSD14
2118 #define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states)
2119 #endif
2120 #define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule)
2121 #define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm)
2122 #define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm)
2123 #define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state)
2124 #define DIOCCLRRULECTRS _IO ('D', 38)
2125 #define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit)
2126 #define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit)
2127 #define DIOCKILLSTATESNV _IOWR('D', 41, struct pfioc_nv)
2128 #define DIOCSTARTALTQ _IO ('D', 42)
2129 #define DIOCSTOPALTQ _IO ('D', 43)
2130 #define DIOCADDALTQV0 _IOWR('D', 45, struct pfioc_altq_v0)
2131 #define DIOCADDALTQV1 _IOWR('D', 45, struct pfioc_altq_v1)
2132 #define DIOCGETALTQSV0 _IOWR('D', 47, struct pfioc_altq_v0)
2133 #define DIOCGETALTQSV1 _IOWR('D', 47, struct pfioc_altq_v1)
2134 #define DIOCGETALTQV0 _IOWR('D', 48, struct pfioc_altq_v0)
2135 #define DIOCGETALTQV1 _IOWR('D', 48, struct pfioc_altq_v1)
2136 #define DIOCCHANGEALTQV0 _IOWR('D', 49, struct pfioc_altq_v0)
2137 #define DIOCCHANGEALTQV1 _IOWR('D', 49, struct pfioc_altq_v1)
2138 #define DIOCGETQSTATSV0 _IOWR('D', 50, struct pfioc_qstats_v0)
2139 #define DIOCGETQSTATSV1 _IOWR('D', 50, struct pfioc_qstats_v1)
2140 #define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr)
2141 #define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr)
2142 #define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr)
2143 #define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr)
2144 #define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr)
2145 #define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset)
2146 #define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset)
2147 #define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table)
2148 #define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table)
2149 #define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table)
2150 #define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table)
2151 #define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table)
2152 #define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table)
2153 #define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table)
2154 #define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table)
2155 #define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table)
2156 #define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table)
2157 #define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table)
2158 #define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table)
2159 #define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table)
2160 #define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table)
2161 #define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table)
2162 #define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table)
2163 #define DIOCOSFPFLUSH _IO('D', 78)
2164 #define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl)
2165 #define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl)
2166 #define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans)
2167 #define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans)
2168 #define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans)
2169 #define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes)
2170 #define DIOCCLRSRCNODES _IO('D', 85)
2171 #define DIOCSETHOSTID _IOWR('D', 86, u_int32_t)
2172 #define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface)
2173 #define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface)
2174 #define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface)
2175 #define DIOCKILLSRCNODES _IOWR('D', 91, struct pfioc_src_node_kill)
2176 #define DIOCGIFSPEEDV0 _IOWR('D', 92, struct pf_ifspeed_v0)
2177 #define DIOCGIFSPEEDV1 _IOWR('D', 92, struct pf_ifspeed_v1)
2178 #ifdef COMPAT_FREEBSD14
2179 #define DIOCGETSTATESV2 _IOWR('D', 93, struct pfioc_states_v2)
2180 #endif
2181 #define DIOCGETSYNCOOKIES _IOWR('D', 94, struct pfioc_nv)
2182 #define DIOCSETSYNCOOKIES _IOWR('D', 95, struct pfioc_nv)
2183 #define DIOCKEEPCOUNTERS _IOWR('D', 96, struct pfioc_nv)
2184 #define DIOCKEEPCOUNTERS_FREEBSD13 _IOWR('D', 92, struct pfioc_nv)
2185 #define DIOCADDETHRULE _IOWR('D', 97, struct pfioc_nv)
2186 #define DIOCGETETHRULE _IOWR('D', 98, struct pfioc_nv)
2187 #define DIOCGETETHRULES _IOWR('D', 99, struct pfioc_nv)
2188 #define DIOCGETETHRULESETS _IOWR('D', 100, struct pfioc_nv)
2189 #define DIOCGETETHRULESET _IOWR('D', 101, struct pfioc_nv)
2190 #define DIOCSETREASS _IOWR('D', 102, u_int32_t)
2191
2192 struct pf_ifspeed_v0 {
2193 char ifname[IFNAMSIZ];
2194 u_int32_t baudrate;
2195 };
2196
2197 struct pf_ifspeed_v1 {
2198 char ifname[IFNAMSIZ];
2199 u_int32_t baudrate32;
2200 /* layout identical to struct pf_ifspeed_v0 up to this point */
2201 u_int64_t baudrate;
2202 };
2203
2204 /* Latest version of struct pf_ifspeed_vX */
2205 #define PF_IFSPEED_VERSION 1
2206
2207 /*
2208 * Compatibility and convenience macros
2209 */
2210 #ifndef _KERNEL
2211 #ifdef PFIOC_USE_LATEST
2212 /*
2213 * Maintaining in-tree consumers of the ioctl interface is easier when that
2214 * code can be written in terms old names that refer to the latest interface
2215 * version as that reduces the required changes in the consumers to those
2216 * that are functionally necessary to accommodate a new interface version.
2217 */
2218 #define pfioc_altq __CONCAT(pfioc_altq_v, PFIOC_ALTQ_VERSION)
2219 #define pfioc_qstats __CONCAT(pfioc_qstats_v, PFIOC_QSTATS_VERSION)
2220 #define pf_ifspeed __CONCAT(pf_ifspeed_v, PF_IFSPEED_VERSION)
2221
2222 #define DIOCADDALTQ __CONCAT(DIOCADDALTQV, PFIOC_ALTQ_VERSION)
2223 #define DIOCGETALTQS __CONCAT(DIOCGETALTQSV, PFIOC_ALTQ_VERSION)
2224 #define DIOCGETALTQ __CONCAT(DIOCGETALTQV, PFIOC_ALTQ_VERSION)
2225 #define DIOCCHANGEALTQ __CONCAT(DIOCCHANGEALTQV, PFIOC_ALTQ_VERSION)
2226 #define DIOCGETQSTATS __CONCAT(DIOCGETQSTATSV, PFIOC_QSTATS_VERSION)
2227 #define DIOCGIFSPEED __CONCAT(DIOCGIFSPEEDV, PF_IFSPEED_VERSION)
2228 #else
2229 /*
2230 * When building out-of-tree code that is written for the old interface,
2231 * such as may exist in ports for example, resolve the old struct tags and
2232 * ioctl command names to the v0 versions.
2233 */
2234 #define pfioc_altq __CONCAT(pfioc_altq_v, 0)
2235 #define pfioc_qstats __CONCAT(pfioc_qstats_v, 0)
2236 #define pf_ifspeed __CONCAT(pf_ifspeed_v, 0)
2237
2238 #define DIOCADDALTQ __CONCAT(DIOCADDALTQV, 0)
2239 #define DIOCGETALTQS __CONCAT(DIOCGETALTQSV, 0)
2240 #define DIOCGETALTQ __CONCAT(DIOCGETALTQV, 0)
2241 #define DIOCCHANGEALTQ __CONCAT(DIOCCHANGEALTQV, 0)
2242 #define DIOCGETQSTATS __CONCAT(DIOCGETQSTATSV, 0)
2243 #define DIOCGIFSPEED __CONCAT(DIOCGIFSPEEDV, 0)
2244 #endif /* PFIOC_USE_LATEST */
2245 #endif /* _KERNEL */
2246
2247 #ifdef _KERNEL
2248 LIST_HEAD(pf_ksrc_node_list, pf_ksrc_node);
2249 struct pf_srchash {
2250 struct pf_ksrc_node_list nodes;
2251 struct mtx lock;
2252 };
2253
2254 struct pf_keyhash {
2255 LIST_HEAD(, pf_state_key) keys;
2256 struct mtx lock;
2257 };
2258
2259 struct pf_idhash {
2260 LIST_HEAD(, pf_kstate) states;
2261 struct mtx lock;
2262 };
2263
2264 struct pf_udpendpointhash {
2265 LIST_HEAD(, pf_udp_endpoint) endpoints;
2266 /* refcont is synchronized on the source endpoint's row lock */
2267 struct mtx lock;
2268 };
2269
2270 extern u_long pf_ioctl_maxcount;
2271 VNET_DECLARE(u_long, pf_hashmask);
2272 #define V_pf_hashmask VNET(pf_hashmask)
2273 VNET_DECLARE(u_long, pf_srchashmask);
2274 #define V_pf_srchashmask VNET(pf_srchashmask)
2275 VNET_DECLARE(u_long, pf_udpendpointhashmask);
2276 #define V_pf_udpendpointhashmask VNET(pf_udpendpointhashmask)
2277 #define PF_HASHSIZ (131072)
2278 #define PF_SRCHASHSIZ (PF_HASHSIZ/4)
2279 #define PF_UDPENDHASHSIZ (PF_HASHSIZ/4)
2280 VNET_DECLARE(struct pf_keyhash *, pf_keyhash);
2281 VNET_DECLARE(struct pf_idhash *, pf_idhash);
2282 VNET_DECLARE(struct pf_udpendpointhash *, pf_udpendpointhash);
2283 #define V_pf_keyhash VNET(pf_keyhash)
2284 #define V_pf_idhash VNET(pf_idhash)
2285 #define V_pf_udpendpointhash VNET(pf_udpendpointhash)
2286 VNET_DECLARE(struct pf_srchash *, pf_srchash);
2287 #define V_pf_srchash VNET(pf_srchash)
2288
2289 #define PF_IDHASHID(id) (be64toh(id) % (V_pf_hashmask + 1))
2290 #define PF_IDHASH(s) PF_IDHASHID((s)->id)
2291
2292 VNET_DECLARE(void *, pf_swi_cookie);
2293 #define V_pf_swi_cookie VNET(pf_swi_cookie)
2294 VNET_DECLARE(struct intr_event *, pf_swi_ie);
2295 #define V_pf_swi_ie VNET(pf_swi_ie)
2296
2297 VNET_DECLARE(struct unrhdr64, pf_stateid);
2298 #define V_pf_stateid VNET(pf_stateid)
2299
2300 TAILQ_HEAD(pf_altqqueue, pf_altq);
2301 VNET_DECLARE(struct pf_altqqueue, pf_altqs[4]);
2302 #define V_pf_altqs VNET(pf_altqs)
2303 VNET_DECLARE(struct pf_kpalist, pf_pabuf[3]);
2304 #define V_pf_pabuf VNET(pf_pabuf)
2305
2306 VNET_DECLARE(u_int32_t, ticket_altqs_active);
2307 #define V_ticket_altqs_active VNET(ticket_altqs_active)
2308 VNET_DECLARE(u_int32_t, ticket_altqs_inactive);
2309 #define V_ticket_altqs_inactive VNET(ticket_altqs_inactive)
2310 VNET_DECLARE(int, altqs_inactive_open);
2311 #define V_altqs_inactive_open VNET(altqs_inactive_open)
2312 VNET_DECLARE(u_int32_t, ticket_pabuf);
2313 #define V_ticket_pabuf VNET(ticket_pabuf)
2314 VNET_DECLARE(struct pf_altqqueue *, pf_altqs_active);
2315 #define V_pf_altqs_active VNET(pf_altqs_active)
2316 VNET_DECLARE(struct pf_altqqueue *, pf_altq_ifs_active);
2317 #define V_pf_altq_ifs_active VNET(pf_altq_ifs_active)
2318 VNET_DECLARE(struct pf_altqqueue *, pf_altqs_inactive);
2319 #define V_pf_altqs_inactive VNET(pf_altqs_inactive)
2320 VNET_DECLARE(struct pf_altqqueue *, pf_altq_ifs_inactive);
2321 #define V_pf_altq_ifs_inactive VNET(pf_altq_ifs_inactive)
2322
2323 VNET_DECLARE(struct pf_krulequeue, pf_unlinked_rules);
2324 #define V_pf_unlinked_rules VNET(pf_unlinked_rules)
2325
2326 #ifdef PF_WANT_32_TO_64_COUNTER
2327 LIST_HEAD(allkiflist_head, pfi_kkif);
2328 VNET_DECLARE(struct allkiflist_head, pf_allkiflist);
2329 #define V_pf_allkiflist VNET(pf_allkiflist)
2330 VNET_DECLARE(size_t, pf_allkifcount);
2331 #define V_pf_allkifcount VNET(pf_allkifcount)
2332 VNET_DECLARE(struct pfi_kkif *, pf_kifmarker);
2333 #define V_pf_kifmarker VNET(pf_kifmarker)
2334
2335 LIST_HEAD(allrulelist_head, pf_krule);
2336 VNET_DECLARE(struct allrulelist_head, pf_allrulelist);
2337 #define V_pf_allrulelist VNET(pf_allrulelist)
2338 VNET_DECLARE(size_t, pf_allrulecount);
2339 #define V_pf_allrulecount VNET(pf_allrulecount)
2340 VNET_DECLARE(struct pf_krule *, pf_rulemarker);
2341 #define V_pf_rulemarker VNET(pf_rulemarker)
2342 #endif
2343
2344 void unhandled_af(int) __dead2;
2345 int pf_start(void);
2346 int pf_stop(void);
2347 void pf_initialize(void);
2348 void pf_mtag_initialize(void);
2349 void pf_mtag_cleanup(void);
2350 void pf_cleanup(void);
2351
2352 struct pf_mtag *pf_get_mtag(struct mbuf *);
2353
2354 extern void pf_calc_skip_steps(struct pf_krulequeue *);
2355 #ifdef ALTQ
2356 extern void pf_altq_ifnet_event(struct ifnet *, int);
2357 #endif
2358 VNET_DECLARE(uma_zone_t, pf_state_z);
2359 #define V_pf_state_z VNET(pf_state_z)
2360 VNET_DECLARE(uma_zone_t, pf_state_key_z);
2361 #define V_pf_state_key_z VNET(pf_state_key_z)
2362 VNET_DECLARE(uma_zone_t, pf_udp_mapping_z);
2363 #define V_pf_udp_mapping_z VNET(pf_udp_mapping_z)
2364 VNET_DECLARE(uma_zone_t, pf_state_scrub_z);
2365 #define V_pf_state_scrub_z VNET(pf_state_scrub_z)
2366
2367 extern void pf_purge_thread(void *);
2368 extern void pf_unload_vnet_purge(void);
2369 extern void pf_intr(void *);
2370 extern void pf_purge_expired_src_nodes(void);
2371
2372 extern int pf_remove_state(struct pf_kstate *);
2373 extern int pf_state_insert(struct pfi_kkif *,
2374 struct pfi_kkif *,
2375 struct pf_state_key *,
2376 struct pf_state_key *,
2377 struct pf_kstate *);
2378 extern struct pf_kstate *pf_alloc_state(int);
2379 extern void pf_free_state(struct pf_kstate *);
2380 extern void pf_killstates(struct pf_kstate_kill *,
2381 unsigned int *);
2382 extern unsigned int pf_clear_states(const struct pf_kstate_kill *);
2383
2384 static __inline void
pf_ref_state(struct pf_kstate * s)2385 pf_ref_state(struct pf_kstate *s)
2386 {
2387
2388 refcount_acquire(&s->refs);
2389 }
2390
2391 static __inline int
pf_release_state(struct pf_kstate * s)2392 pf_release_state(struct pf_kstate *s)
2393 {
2394
2395 if (refcount_release(&s->refs)) {
2396 pf_free_state(s);
2397 return (1);
2398 } else
2399 return (0);
2400 }
2401
2402 static __inline int
pf_release_staten(struct pf_kstate * s,u_int n)2403 pf_release_staten(struct pf_kstate *s, u_int n)
2404 {
2405
2406 if (refcount_releasen(&s->refs, n)) {
2407 pf_free_state(s);
2408 return (1);
2409 } else
2410 return (0);
2411 }
2412
2413 static __inline uint64_t
pf_get_uptime(void)2414 pf_get_uptime(void)
2415 {
2416 struct timeval t;
2417 microuptime(&t);
2418 return ((t.tv_sec * 1000) + (t.tv_usec / 1000));
2419 }
2420
2421 static __inline uint64_t
pf_get_time(void)2422 pf_get_time(void)
2423 {
2424 struct timeval t;
2425 microtime(&t);
2426 return ((t.tv_sec * 1000) + (t.tv_usec / 1000));
2427 }
2428
2429 extern struct pf_kstate *pf_find_state_byid(uint64_t, uint32_t);
2430 extern struct pf_kstate *pf_find_state_all(
2431 const struct pf_state_key_cmp *,
2432 u_int, int *);
2433 extern bool pf_find_state_all_exists(
2434 const struct pf_state_key_cmp *,
2435 u_int);
2436 extern struct pf_udp_mapping *pf_udp_mapping_find(struct pf_udp_endpoint_cmp
2437 *endpoint);
2438 extern struct pf_udp_mapping *pf_udp_mapping_create(sa_family_t af,
2439 struct pf_addr *src_addr, uint16_t src_port,
2440 struct pf_addr *nat_addr, uint16_t nat_port);
2441 extern int pf_udp_mapping_insert(struct pf_udp_mapping
2442 *mapping);
2443 extern void pf_udp_mapping_release(struct pf_udp_mapping
2444 *mapping);
2445 uint32_t pf_hashsrc(struct pf_addr *, sa_family_t);
2446 extern bool pf_src_node_exists(struct pf_ksrc_node **,
2447 struct pf_srchash *);
2448 extern struct pf_ksrc_node *pf_find_src_node(struct pf_addr *,
2449 struct pf_krule *, sa_family_t,
2450 struct pf_srchash **, pf_sn_types_t, bool);
2451 extern void pf_unlink_src_node(struct pf_ksrc_node *);
2452 extern u_int pf_free_src_nodes(struct pf_ksrc_node_list *);
2453 extern void pf_print_state(struct pf_kstate *);
2454 extern void pf_print_flags(uint16_t);
2455 extern int pf_addr_wrap_neq(struct pf_addr_wrap *,
2456 struct pf_addr_wrap *);
2457 extern u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t,
2458 u_int8_t);
2459 extern u_int16_t pf_proto_cksum_fixup(struct mbuf *, u_int16_t,
2460 u_int16_t, u_int16_t, u_int8_t);
2461
2462 VNET_DECLARE(struct ifnet *, sync_ifp);
2463 #define V_sync_ifp VNET(sync_ifp);
2464 VNET_DECLARE(struct pf_krule, pf_default_rule);
2465 #define V_pf_default_rule VNET(pf_default_rule)
2466 extern void pf_addrcpy(struct pf_addr *, const struct pf_addr *,
2467 sa_family_t);
2468 void pf_free_rule(struct pf_krule *);
2469
2470 int pf_test_eth(int, int, struct ifnet *, struct mbuf **, struct inpcb *);
2471 int pf_scan_sctp(struct pf_pdesc *);
2472 #if defined(INET) || defined(INET6)
2473 int pf_test(sa_family_t, int, int, struct ifnet *, struct mbuf **, struct inpcb *,
2474 struct pf_rule_actions *);
2475 #endif
2476 #ifdef INET
2477 int pf_normalize_ip(u_short *, struct pf_pdesc *);
2478 #endif /* INET */
2479
2480 #ifdef INET6
2481 int pf_normalize_ip6(int, u_short *, struct pf_pdesc *);
2482 void pf_poolmask(struct pf_addr *, struct pf_addr*,
2483 struct pf_addr *, struct pf_addr *, sa_family_t);
2484 void pf_addr_inc(struct pf_addr *, sa_family_t);
2485 int pf_max_frag_size(struct mbuf *);
2486 int pf_refragment6(struct ifnet *, struct mbuf **, struct m_tag *,
2487 struct ifnet *, bool);
2488 #endif /* INET6 */
2489
2490 int pf_multihome_scan_init(int, int, struct pf_pdesc *);
2491 int pf_multihome_scan_asconf(int, int, struct pf_pdesc *);
2492
2493 u_int32_t pf_new_isn(struct pf_kstate *);
2494 void *pf_pull_hdr(const struct mbuf *, int, void *, int, u_short *, u_short *,
2495 sa_family_t);
2496 void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t);
2497 void pf_change_proto_a(struct mbuf *, void *, u_int16_t *, u_int32_t,
2498 u_int8_t);
2499 void pf_change_tcp_a(struct mbuf *, void *, u_int16_t *, u_int32_t);
2500 int pf_patch_16(struct pf_pdesc *, void *, u_int16_t, bool);
2501 int pf_patch_32(struct pf_pdesc *, void *, u_int32_t, bool);
2502 void pf_send_deferred_syn(struct pf_kstate *);
2503 int pf_match_addr(u_int8_t, const struct pf_addr *,
2504 const struct pf_addr *, const struct pf_addr *, sa_family_t);
2505 int pf_match_addr_range(const struct pf_addr *, const struct pf_addr *,
2506 const struct pf_addr *, sa_family_t);
2507 int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t);
2508
2509 void pf_normalize_init(void);
2510 void pf_normalize_cleanup(void);
2511 int pf_normalize_tcp(struct pf_pdesc *);
2512 void pf_normalize_tcp_cleanup(struct pf_kstate *);
2513 int pf_normalize_tcp_init(struct pf_pdesc *,
2514 struct tcphdr *, struct pf_state_peer *);
2515 int pf_normalize_tcp_stateful(struct pf_pdesc *,
2516 u_short *, struct tcphdr *, struct pf_kstate *,
2517 struct pf_state_peer *, struct pf_state_peer *, int *);
2518 int pf_normalize_sctp_init(struct pf_pdesc *,
2519 struct pf_state_peer *, struct pf_state_peer *);
2520 int pf_normalize_sctp(struct pf_pdesc *);
2521 u_int32_t
2522 pf_state_expires(const struct pf_kstate *);
2523 void pf_purge_expired_fragments(void);
2524 void pf_purge_fragments(uint32_t);
2525 int pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kkif *,
2526 int);
2527 int pf_socket_lookup(struct pf_pdesc *);
2528 struct pf_state_key *pf_alloc_state_key(int);
2529 int pf_translate(struct pf_pdesc *, struct pf_addr *, u_int16_t,
2530 struct pf_addr *, u_int16_t, u_int16_t, int);
2531 int pf_translate_af(struct pf_pdesc *);
2532 bool pf_init_threshold(struct pf_kthreshold *, uint32_t, uint32_t);
2533
2534 void pfr_initialize(void);
2535 void pfr_cleanup(void);
2536 int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t);
2537 void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t,
2538 u_int64_t, int, int, int);
2539 int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, sa_family_t,
2540 pf_addr_filter_func_t);
2541 void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *);
2542 struct pfr_ktable *
2543 pfr_attach_table(struct pf_kruleset *, char *);
2544 struct pfr_ktable *
2545 pfr_eth_attach_table(struct pf_keth_ruleset *, char *);
2546 void pfr_detach_table(struct pfr_ktable *);
2547 int pfr_clr_tables(struct pfr_table *, int *, int);
2548 int pfr_add_tables(struct pfr_table *, int, int *, int);
2549 int pfr_del_tables(struct pfr_table *, int, int *, int);
2550 int pfr_table_count(struct pfr_table *, int);
2551 int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int);
2552 int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int);
2553 int pfr_clr_tstats(struct pfr_table *, int, int *, int);
2554 int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int);
2555 int pfr_clr_addrs(struct pfr_table *, int *, int);
2556 int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *, time_t);
2557 int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
2558 int);
2559 int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
2560 int);
2561 int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
2562 int *, int *, int *, int, u_int32_t);
2563 int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int);
2564 int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int);
2565 int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *,
2566 int);
2567 int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
2568 int);
2569 int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int);
2570 int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int);
2571 int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int);
2572 int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *,
2573 int *, u_int32_t, int);
2574
2575 MALLOC_DECLARE(PFI_MTYPE);
2576 VNET_DECLARE(struct pfi_kkif *, pfi_all);
2577 #define V_pfi_all VNET(pfi_all)
2578
2579 void pfi_initialize(void);
2580 void pfi_initialize_vnet(void);
2581 void pfi_cleanup(void);
2582 void pfi_cleanup_vnet(void);
2583 void pfi_kkif_ref(struct pfi_kkif *);
2584 void pfi_kkif_unref(struct pfi_kkif *);
2585 struct pfi_kkif *pfi_kkif_find(const char *);
2586 struct pfi_kkif *pfi_kkif_attach(struct pfi_kkif *, const char *);
2587 int pfi_kkif_match(struct pfi_kkif *, struct pfi_kkif *);
2588 void pfi_kkif_purge(void);
2589 int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *,
2590 sa_family_t);
2591 int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t);
2592 void pfi_dynaddr_remove(struct pfi_dynaddr *);
2593 void pfi_dynaddr_copyout(struct pf_addr_wrap *);
2594 void pfi_update_status(const char *, struct pf_status *);
2595 void pfi_get_ifaces(const char *, struct pfi_kif *, int *);
2596 int pfi_set_flags(const char *, int);
2597 int pfi_clear_flags(const char *, int);
2598
2599 int pf_match_tag(struct mbuf *, struct pf_krule *, int *, int);
2600 int pf_tag_packet(struct pf_pdesc *, int);
2601 int pf_addr_cmp(struct pf_addr *, struct pf_addr *,
2602 sa_family_t);
2603
2604 uint8_t* pf_find_tcpopt(u_int8_t *, u_int8_t *, size_t,
2605 u_int8_t, u_int8_t);
2606 u_int16_t pf_get_mss(struct pf_pdesc *);
2607 u_int8_t pf_get_wscale(struct pf_pdesc *);
2608 struct mbuf *pf_build_tcp(const struct pf_krule *, sa_family_t,
2609 const struct pf_addr *, const struct pf_addr *,
2610 u_int16_t, u_int16_t, u_int32_t, u_int32_t,
2611 u_int8_t, u_int16_t, u_int16_t, u_int8_t, int,
2612 u_int16_t, u_int16_t, u_int, int);
2613 void pf_send_tcp(const struct pf_krule *, sa_family_t,
2614 const struct pf_addr *, const struct pf_addr *,
2615 u_int16_t, u_int16_t, u_int32_t, u_int32_t,
2616 u_int8_t, u_int16_t, u_int16_t, u_int8_t, int,
2617 u_int16_t, u_int16_t, int);
2618
2619 void pf_syncookies_init(void);
2620 void pf_syncookies_cleanup(void);
2621 int pf_get_syncookies(struct pfioc_nv *);
2622 int pf_set_syncookies(struct pfioc_nv *);
2623 int pf_synflood_check(struct pf_pdesc *);
2624 void pf_syncookie_send(struct pf_pdesc *);
2625 bool pf_syncookie_check(struct pf_pdesc *);
2626 u_int8_t pf_syncookie_validate(struct pf_pdesc *);
2627 struct mbuf * pf_syncookie_recreate_syn(struct pf_pdesc *);
2628
2629 VNET_DECLARE(struct pf_kstatus, pf_status);
2630 #define V_pf_status VNET(pf_status)
2631
2632 struct pf_limit {
2633 uma_zone_t zone;
2634 u_int limit;
2635 };
2636 VNET_DECLARE(struct pf_limit, pf_limits[PF_LIMIT_MAX]);
2637 #define V_pf_limits VNET(pf_limits)
2638
2639 #endif /* _KERNEL */
2640
2641 #ifdef _KERNEL
2642 struct pf_nl_pooladdr {
2643 u_int32_t action;
2644 u_int32_t ticket;
2645 u_int32_t nr;
2646 u_int32_t r_num;
2647 u_int8_t r_action;
2648 u_int8_t r_last;
2649 u_int8_t af;
2650 char anchor[MAXPATHLEN];
2651 struct pf_pooladdr addr;
2652 /* Above this is identical to pfioc_pooladdr */
2653 int which;
2654 };
2655
2656 VNET_DECLARE(struct pf_kanchor_global, pf_anchors);
2657 #define V_pf_anchors VNET(pf_anchors)
2658 VNET_DECLARE(struct pf_kanchor, pf_main_anchor);
2659 #define V_pf_main_anchor VNET(pf_main_anchor)
2660 VNET_DECLARE(struct pf_keth_anchor_global, pf_keth_anchors);
2661 #define V_pf_keth_anchors VNET(pf_keth_anchors)
2662 #define pf_main_ruleset V_pf_main_anchor.ruleset
2663
2664 VNET_DECLARE(struct pf_keth_anchor, pf_main_keth_anchor);
2665 #define V_pf_main_keth_anchor VNET(pf_main_keth_anchor)
2666 VNET_DECLARE(struct pf_keth_ruleset*, pf_keth);
2667 #define V_pf_keth VNET(pf_keth)
2668
2669 void pf_init_kruleset(struct pf_kruleset *);
2670 void pf_init_keth(struct pf_keth_ruleset *);
2671 int pf_kanchor_setup(struct pf_krule *,
2672 const struct pf_kruleset *, const char *);
2673 int pf_kanchor_copyout(const struct pf_kruleset *,
2674 const struct pf_krule *, char *, size_t);
2675 int pf_kanchor_nvcopyout(const struct pf_kruleset *,
2676 const struct pf_krule *, nvlist_t *);
2677 void pf_kanchor_remove(struct pf_krule *);
2678 void pf_remove_if_empty_kruleset(struct pf_kruleset *);
2679 struct pf_kruleset *pf_find_kruleset(const char *);
2680 struct pf_kruleset *pf_get_leaf_kruleset(char *, char **);
2681 struct pf_kanchor *pf_create_kanchor(struct pf_kanchor *, const char *);
2682 struct pf_kruleset *pf_find_or_create_kruleset(const char *);
2683 void pf_rs_initialize(void);
2684
2685
2686 struct pf_krule *pf_krule_alloc(void);
2687
2688 void pf_remove_if_empty_keth_ruleset(
2689 struct pf_keth_ruleset *);
2690 struct pf_keth_ruleset *pf_find_keth_ruleset(const char *);
2691 struct pf_keth_anchor *pf_find_keth_anchor(const char *);
2692 int pf_keth_anchor_setup(struct pf_keth_rule *,
2693 const struct pf_keth_ruleset *, const char *);
2694 int pf_keth_anchor_nvcopyout(
2695 const struct pf_keth_ruleset *,
2696 const struct pf_keth_rule *, nvlist_t *);
2697 struct pf_keth_ruleset *pf_find_or_create_keth_ruleset(const char *);
2698 void pf_keth_anchor_remove(struct pf_keth_rule *);
2699
2700 int pf_ioctl_getrules(struct pfioc_rule *);
2701 int pf_ioctl_addrule(struct pf_krule *, uint32_t,
2702 uint32_t, const char *, const char *, uid_t uid,
2703 pid_t);
2704 void pf_ioctl_clear_status(void);
2705 int pf_ioctl_get_timeout(int, int *);
2706 int pf_ioctl_set_timeout(int, int, int *);
2707 int pf_ioctl_get_limit(int, unsigned int *);
2708 int pf_ioctl_set_limit(int, unsigned int, unsigned int *);
2709 int pf_ioctl_begin_addrs(uint32_t *);
2710 int pf_ioctl_add_addr(struct pf_nl_pooladdr *);
2711 int pf_ioctl_get_addrs(struct pf_nl_pooladdr *);
2712 int pf_ioctl_get_addr(struct pf_nl_pooladdr *);
2713 int pf_ioctl_get_rulesets(struct pfioc_ruleset *);
2714 int pf_ioctl_get_ruleset(struct pfioc_ruleset *);
2715
2716 void pf_krule_free(struct pf_krule *);
2717 void pf_krule_clear_counters(struct pf_krule *);
2718 void pf_addr_copyout(struct pf_addr_wrap *);
2719 #endif
2720
2721 /* The fingerprint functions can be linked into userland programs (tcpdump) */
2722 int pf_osfp_add(struct pf_osfp_ioctl *);
2723 #ifdef _KERNEL
2724 struct pf_osfp_enlist *
2725 pf_osfp_fingerprint(struct pf_pdesc *, const struct tcphdr *);
2726 #endif /* _KERNEL */
2727 void pf_osfp_flush(void);
2728 int pf_osfp_get(struct pf_osfp_ioctl *);
2729 int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t);
2730
2731 #ifdef _KERNEL
2732 void pf_print_host(struct pf_addr *, u_int16_t, sa_family_t);
2733
2734 enum pf_test_status pf_step_into_anchor(struct pf_test_ctx *, struct pf_krule *);
2735 enum pf_test_status pf_match_rule(struct pf_test_ctx *, struct pf_kruleset *);
2736 void pf_step_into_keth_anchor(struct pf_keth_anchor_stackframe *,
2737 int *, struct pf_keth_ruleset **,
2738 struct pf_keth_rule **, struct pf_keth_rule **,
2739 int *);
2740 int pf_step_out_of_keth_anchor(struct pf_keth_anchor_stackframe *,
2741 int *, struct pf_keth_ruleset **,
2742 struct pf_keth_rule **, struct pf_keth_rule **,
2743 int *);
2744
2745 u_short pf_map_addr(u_int8_t, struct pf_krule *,
2746 struct pf_addr *, struct pf_addr *,
2747 struct pfi_kkif **nkif, struct pf_addr *,
2748 struct pf_kpool *);
2749 u_short pf_map_addr_sn(u_int8_t, struct pf_krule *,
2750 struct pf_addr *, struct pf_addr *,
2751 struct pfi_kkif **nkif, struct pf_addr *,
2752 struct pf_ksrc_node **, struct pf_srchash **,
2753 struct pf_kpool *, pf_sn_types_t);
2754 int pf_get_transaddr_af(struct pf_krule *,
2755 struct pf_pdesc *);
2756 u_short pf_get_translation(struct pf_test_ctx *);
2757 u_short pf_get_transaddr(struct pf_test_ctx *,
2758 struct pf_krule *,
2759 u_int8_t, struct pf_kpool *);
2760 int pf_translate_compat(struct pf_test_ctx *);
2761
2762 int pf_state_key_setup(struct pf_pdesc *,
2763 u_int16_t, u_int16_t,
2764 struct pf_state_key **sk, struct pf_state_key **nk);
2765 struct pf_state_key *pf_state_key_clone(const struct pf_state_key *);
2766 void pf_rule_to_actions(struct pf_krule *,
2767 struct pf_rule_actions *);
2768 int pf_normalize_mss(struct pf_pdesc *pd);
2769 #if defined(INET) || defined(INET6)
2770 void pf_scrub(struct pf_pdesc *);
2771 #endif
2772
2773 struct pfi_kkif *pf_kkif_create(int);
2774 void pf_kkif_free(struct pfi_kkif *);
2775 void pf_kkif_zero(struct pfi_kkif *);
2776
2777
2778 /* NAT64 functions. */
2779 int inet_nat64(int, const void *, void *, const void *, u_int8_t);
2780 int inet_nat64_inet(const void *, void *, const void *, u_int8_t);
2781 int inet_nat64_inet6(const void *, void *, const void *, u_int8_t);
2782
2783 int inet_nat46(int, const void *, void *, const void *, u_int8_t);
2784 int inet_nat46_inet(const void *, void *, const void *, u_int8_t);
2785 int inet_nat46_inet6(const void *, void *, const void *, u_int8_t);
2786
2787 #endif /* _KERNEL */
2788
2789 #endif /* _NET_PFVAR_H_ */
2790