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 * $FreeBSD$
33 */
34
35 #ifndef _NET_PFVAR_H_
36 #define _NET_PFVAR_H_
37
38 #include <sys/param.h>
39 #include <sys/queue.h>
40 #include <sys/counter.h>
41 #include <sys/cpuset.h>
42 #include <sys/malloc.h>
43 #include <sys/nv.h>
44 #include <sys/refcount.h>
45 #include <sys/sysctl.h>
46 #include <sys/smp.h>
47 #include <sys/lock.h>
48 #include <sys/rmlock.h>
49 #include <sys/tree.h>
50 #include <sys/seqc.h>
51 #include <vm/uma.h>
52
53 #include <net/radix.h>
54 #include <netinet/in.h>
55 #ifdef _KERNEL
56 #include <netinet/ip.h>
57 #include <netinet/tcp.h>
58 #include <netinet/udp.h>
59 #include <netinet/ip_icmp.h>
60 #include <netinet/icmp6.h>
61 #endif
62
63 #include <netpfil/pf/pf.h>
64 #include <netpfil/pf/pf_altq.h>
65 #include <netpfil/pf/pf_mtag.h>
66
67 #ifdef _KERNEL
68
69 #if defined(__arm__)
70 #define PF_WANT_32_TO_64_COUNTER
71 #endif
72
73 /*
74 * A hybrid of 32-bit and 64-bit counters which can be used on platforms where
75 * counter(9) is very expensive.
76 *
77 * As 32-bit counters are expected to overflow, a periodic job sums them up to
78 * a saved 64-bit state. Fetching the value still walks all CPUs to get the most
79 * current snapshot.
80 */
81 #ifdef PF_WANT_32_TO_64_COUNTER
82 struct pf_counter_u64_pcpu {
83 u_int32_t current;
84 u_int32_t snapshot;
85 };
86
87 struct pf_counter_u64 {
88 struct pf_counter_u64_pcpu *pfcu64_pcpu;
89 u_int64_t pfcu64_value;
90 seqc_t pfcu64_seqc;
91 };
92
93 static inline int
pf_counter_u64_init(struct pf_counter_u64 * pfcu64,int flags)94 pf_counter_u64_init(struct pf_counter_u64 *pfcu64, int flags)
95 {
96
97 pfcu64->pfcu64_value = 0;
98 pfcu64->pfcu64_seqc = 0;
99 pfcu64->pfcu64_pcpu = uma_zalloc_pcpu(pcpu_zone_8, flags | M_ZERO);
100 if (__predict_false(pfcu64->pfcu64_pcpu == NULL))
101 return (ENOMEM);
102 return (0);
103 }
104
105 static inline void
pf_counter_u64_deinit(struct pf_counter_u64 * pfcu64)106 pf_counter_u64_deinit(struct pf_counter_u64 *pfcu64)
107 {
108
109 uma_zfree_pcpu(pcpu_zone_8, pfcu64->pfcu64_pcpu);
110 }
111
112 static inline void
pf_counter_u64_critical_enter(void)113 pf_counter_u64_critical_enter(void)
114 {
115
116 critical_enter();
117 }
118
119 static inline void
pf_counter_u64_critical_exit(void)120 pf_counter_u64_critical_exit(void)
121 {
122
123 critical_exit();
124 }
125
126 static inline void
pf_counter_u64_add_protected(struct pf_counter_u64 * pfcu64,uint32_t n)127 pf_counter_u64_add_protected(struct pf_counter_u64 *pfcu64, uint32_t n)
128 {
129 struct pf_counter_u64_pcpu *pcpu;
130 u_int32_t val;
131
132 MPASS(curthread->td_critnest > 0);
133 pcpu = zpcpu_get(pfcu64->pfcu64_pcpu);
134 val = atomic_load_int(&pcpu->current);
135 atomic_store_int(&pcpu->current, val + n);
136 }
137
138 static inline void
pf_counter_u64_add(struct pf_counter_u64 * pfcu64,uint32_t n)139 pf_counter_u64_add(struct pf_counter_u64 *pfcu64, uint32_t n)
140 {
141
142 critical_enter();
143 pf_counter_u64_add_protected(pfcu64, n);
144 critical_exit();
145 }
146
147 static inline u_int64_t
pf_counter_u64_periodic(struct pf_counter_u64 * pfcu64)148 pf_counter_u64_periodic(struct pf_counter_u64 *pfcu64)
149 {
150 struct pf_counter_u64_pcpu *pcpu;
151 u_int64_t sum;
152 u_int32_t val;
153 int cpu;
154
155 MPASS(curthread->td_critnest > 0);
156 seqc_write_begin(&pfcu64->pfcu64_seqc);
157 sum = pfcu64->pfcu64_value;
158 CPU_FOREACH(cpu) {
159 pcpu = zpcpu_get_cpu(pfcu64->pfcu64_pcpu, cpu);
160 val = atomic_load_int(&pcpu->current);
161 sum += (uint32_t)(val - pcpu->snapshot);
162 pcpu->snapshot = val;
163 }
164 pfcu64->pfcu64_value = sum;
165 seqc_write_end(&pfcu64->pfcu64_seqc);
166 return (sum);
167 }
168
169 static inline u_int64_t
pf_counter_u64_fetch(const struct pf_counter_u64 * pfcu64)170 pf_counter_u64_fetch(const struct pf_counter_u64 *pfcu64)
171 {
172 struct pf_counter_u64_pcpu *pcpu;
173 u_int64_t sum;
174 seqc_t seqc;
175 int cpu;
176
177 for (;;) {
178 seqc = seqc_read(&pfcu64->pfcu64_seqc);
179 sum = 0;
180 CPU_FOREACH(cpu) {
181 pcpu = zpcpu_get_cpu(pfcu64->pfcu64_pcpu, cpu);
182 sum += (uint32_t)(atomic_load_int(&pcpu->current) -pcpu->snapshot);
183 }
184 sum += pfcu64->pfcu64_value;
185 if (seqc_consistent(&pfcu64->pfcu64_seqc, seqc))
186 break;
187 }
188 return (sum);
189 }
190
191 static inline void
pf_counter_u64_zero_protected(struct pf_counter_u64 * pfcu64)192 pf_counter_u64_zero_protected(struct pf_counter_u64 *pfcu64)
193 {
194 struct pf_counter_u64_pcpu *pcpu;
195 int cpu;
196
197 MPASS(curthread->td_critnest > 0);
198 seqc_write_begin(&pfcu64->pfcu64_seqc);
199 CPU_FOREACH(cpu) {
200 pcpu = zpcpu_get_cpu(pfcu64->pfcu64_pcpu, cpu);
201 pcpu->snapshot = atomic_load_int(&pcpu->current);
202 }
203 pfcu64->pfcu64_value = 0;
204 seqc_write_end(&pfcu64->pfcu64_seqc);
205 }
206
207 static inline void
pf_counter_u64_zero(struct pf_counter_u64 * pfcu64)208 pf_counter_u64_zero(struct pf_counter_u64 *pfcu64)
209 {
210
211 critical_enter();
212 pf_counter_u64_zero_protected(pfcu64);
213 critical_exit();
214 }
215 #else
216 struct pf_counter_u64 {
217 counter_u64_t counter;
218 };
219
220 static inline int
pf_counter_u64_init(struct pf_counter_u64 * pfcu64,int flags)221 pf_counter_u64_init(struct pf_counter_u64 *pfcu64, int flags)
222 {
223
224 pfcu64->counter = counter_u64_alloc(flags);
225 if (__predict_false(pfcu64->counter == NULL))
226 return (ENOMEM);
227 return (0);
228 }
229
230 static inline void
pf_counter_u64_deinit(struct pf_counter_u64 * pfcu64)231 pf_counter_u64_deinit(struct pf_counter_u64 *pfcu64)
232 {
233
234 counter_u64_free(pfcu64->counter);
235 }
236
237 static inline void
pf_counter_u64_critical_enter(void)238 pf_counter_u64_critical_enter(void)
239 {
240
241 }
242
243 static inline void
pf_counter_u64_critical_exit(void)244 pf_counter_u64_critical_exit(void)
245 {
246
247 }
248
249 static inline void
pf_counter_u64_add_protected(struct pf_counter_u64 * pfcu64,uint32_t n)250 pf_counter_u64_add_protected(struct pf_counter_u64 *pfcu64, uint32_t n)
251 {
252
253 counter_u64_add(pfcu64->counter, n);
254 }
255
256 static inline void
pf_counter_u64_add(struct pf_counter_u64 * pfcu64,uint32_t n)257 pf_counter_u64_add(struct pf_counter_u64 *pfcu64, uint32_t n)
258 {
259
260 pf_counter_u64_add_protected(pfcu64, n);
261 }
262
263 static inline u_int64_t
pf_counter_u64_fetch(const struct pf_counter_u64 * pfcu64)264 pf_counter_u64_fetch(const struct pf_counter_u64 *pfcu64)
265 {
266
267 return (counter_u64_fetch(pfcu64->counter));
268 }
269
270 static inline void
pf_counter_u64_zero_protected(struct pf_counter_u64 * pfcu64)271 pf_counter_u64_zero_protected(struct pf_counter_u64 *pfcu64)
272 {
273
274 counter_u64_zero(pfcu64->counter);
275 }
276
277 static inline void
pf_counter_u64_zero(struct pf_counter_u64 * pfcu64)278 pf_counter_u64_zero(struct pf_counter_u64 *pfcu64)
279 {
280
281 pf_counter_u64_zero_protected(pfcu64);
282 }
283 #endif
284
285 SYSCTL_DECL(_net_pf);
286 MALLOC_DECLARE(M_PFHASH);
287
288 struct pfi_dynaddr {
289 TAILQ_ENTRY(pfi_dynaddr) entry;
290 struct pf_addr pfid_addr4;
291 struct pf_addr pfid_mask4;
292 struct pf_addr pfid_addr6;
293 struct pf_addr pfid_mask6;
294 struct pfr_ktable *pfid_kt;
295 struct pfi_kkif *pfid_kif;
296 int pfid_net; /* mask or 128 */
297 int pfid_acnt4; /* address count IPv4 */
298 int pfid_acnt6; /* address count IPv6 */
299 sa_family_t pfid_af; /* rule af */
300 u_int8_t pfid_iflags; /* PFI_AFLAG_* */
301 };
302
303 /*
304 * Address manipulation macros
305 */
306 #define HTONL(x) (x) = htonl((__uint32_t)(x))
307 #define HTONS(x) (x) = htons((__uint16_t)(x))
308 #define NTOHL(x) (x) = ntohl((__uint32_t)(x))
309 #define NTOHS(x) (x) = ntohs((__uint16_t)(x))
310
311 #define PF_NAME "pf"
312
313 #define PF_HASHROW_ASSERT(h) mtx_assert(&(h)->lock, MA_OWNED)
314 #define PF_HASHROW_LOCK(h) mtx_lock(&(h)->lock)
315 #define PF_HASHROW_UNLOCK(h) mtx_unlock(&(h)->lock)
316
317 #ifdef INVARIANTS
318 #define PF_STATE_LOCK(s) \
319 do { \
320 struct pf_kstate *_s = (s); \
321 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(_s)]; \
322 MPASS(_s->lock == &_ih->lock); \
323 mtx_lock(_s->lock); \
324 } while (0)
325 #define PF_STATE_UNLOCK(s) \
326 do { \
327 struct pf_kstate *_s = (s); \
328 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(_s)]; \
329 MPASS(_s->lock == &_ih->lock); \
330 mtx_unlock(_s->lock); \
331 } while (0)
332 #else
333 #define PF_STATE_LOCK(s) mtx_lock(s->lock)
334 #define PF_STATE_UNLOCK(s) mtx_unlock(s->lock)
335 #endif
336
337 #ifdef INVARIANTS
338 #define PF_STATE_LOCK_ASSERT(s) \
339 do { \
340 struct pf_kstate *_s = (s); \
341 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(_s)]; \
342 MPASS(_s->lock == &_ih->lock); \
343 PF_HASHROW_ASSERT(_ih); \
344 } while (0)
345 #else /* !INVARIANTS */
346 #define PF_STATE_LOCK_ASSERT(s) do {} while (0)
347 #endif /* INVARIANTS */
348
349 extern struct mtx_padalign pf_unlnkdrules_mtx;
350 #define PF_UNLNKDRULES_LOCK() mtx_lock(&pf_unlnkdrules_mtx)
351 #define PF_UNLNKDRULES_UNLOCK() mtx_unlock(&pf_unlnkdrules_mtx)
352
353 extern struct rmlock pf_rules_lock;
354 #define PF_RULES_RLOCK_TRACKER struct rm_priotracker _pf_rules_tracker
355 #define PF_RULES_RLOCK() rm_rlock(&pf_rules_lock, &_pf_rules_tracker)
356 #define PF_RULES_RUNLOCK() rm_runlock(&pf_rules_lock, &_pf_rules_tracker)
357 #define PF_RULES_WLOCK() rm_wlock(&pf_rules_lock)
358 #define PF_RULES_WUNLOCK() rm_wunlock(&pf_rules_lock)
359 #define PF_RULES_WOWNED() rm_wowned(&pf_rules_lock)
360 #define PF_RULES_ASSERT() rm_assert(&pf_rules_lock, RA_LOCKED)
361 #define PF_RULES_RASSERT() rm_assert(&pf_rules_lock, RA_RLOCKED)
362 #define PF_RULES_WASSERT() rm_assert(&pf_rules_lock, RA_WLOCKED)
363
364 extern struct mtx_padalign pf_table_stats_lock;
365 #define PF_TABLE_STATS_LOCK() mtx_lock(&pf_table_stats_lock)
366 #define PF_TABLE_STATS_UNLOCK() mtx_unlock(&pf_table_stats_lock)
367 #define PF_TABLE_STATS_OWNED() mtx_owned(&pf_table_stats_lock)
368 #define PF_TABLE_STATS_ASSERT() mtx_assert(&pf_rules_lock, MA_OWNED)
369
370 extern struct sx pf_end_lock;
371
372 #define PF_MODVER 1
373 #define PFLOG_MODVER 1
374 #define PFSYNC_MODVER 1
375
376 #define PFLOG_MINVER 1
377 #define PFLOG_PREFVER PFLOG_MODVER
378 #define PFLOG_MAXVER 1
379 #define PFSYNC_MINVER 1
380 #define PFSYNC_PREFVER PFSYNC_MODVER
381 #define PFSYNC_MAXVER 1
382
383 #ifdef INET
384 #ifndef INET6
385 #define PF_INET_ONLY
386 #endif /* ! INET6 */
387 #endif /* INET */
388
389 #ifdef INET6
390 #ifndef INET
391 #define PF_INET6_ONLY
392 #endif /* ! INET */
393 #endif /* INET6 */
394
395 #ifdef INET
396 #ifdef INET6
397 #define PF_INET_INET6
398 #endif /* INET6 */
399 #endif /* INET */
400
401 #else
402
403 #define PF_INET_INET6
404
405 #endif /* _KERNEL */
406
407 /* Both IPv4 and IPv6 */
408 #ifdef PF_INET_INET6
409
410 #define PF_AEQ(a, b, c) \
411 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \
412 (c == AF_INET6 && (a)->addr32[3] == (b)->addr32[3] && \
413 (a)->addr32[2] == (b)->addr32[2] && \
414 (a)->addr32[1] == (b)->addr32[1] && \
415 (a)->addr32[0] == (b)->addr32[0])) \
416
417 #define PF_ANEQ(a, b, c) \
418 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \
419 (c == AF_INET6 && ((a)->addr32[0] != (b)->addr32[0] || \
420 (a)->addr32[1] != (b)->addr32[1] || \
421 (a)->addr32[2] != (b)->addr32[2] || \
422 (a)->addr32[3] != (b)->addr32[3]))) \
423
424 #define PF_AZERO(a, c) \
425 ((c == AF_INET && !(a)->addr32[0]) || \
426 (c == AF_INET6 && !(a)->addr32[0] && !(a)->addr32[1] && \
427 !(a)->addr32[2] && !(a)->addr32[3] )) \
428
429 #define PF_MATCHA(n, a, m, b, f) \
430 pf_match_addr(n, a, m, b, f)
431
432 #define PF_ACPY(a, b, f) \
433 pf_addrcpy(a, b, f)
434
435 #define PF_AINC(a, f) \
436 pf_addr_inc(a, f)
437
438 #define PF_POOLMASK(a, b, c, d, f) \
439 pf_poolmask(a, b, c, d, f)
440
441 #else
442
443 /* Just IPv6 */
444
445 #ifdef PF_INET6_ONLY
446
447 #define PF_AEQ(a, b, c) \
448 ((a)->addr32[3] == (b)->addr32[3] && \
449 (a)->addr32[2] == (b)->addr32[2] && \
450 (a)->addr32[1] == (b)->addr32[1] && \
451 (a)->addr32[0] == (b)->addr32[0]) \
452
453 #define PF_ANEQ(a, b, c) \
454 ((a)->addr32[3] != (b)->addr32[3] || \
455 (a)->addr32[2] != (b)->addr32[2] || \
456 (a)->addr32[1] != (b)->addr32[1] || \
457 (a)->addr32[0] != (b)->addr32[0]) \
458
459 #define PF_AZERO(a, c) \
460 (!(a)->addr32[0] && \
461 !(a)->addr32[1] && \
462 !(a)->addr32[2] && \
463 !(a)->addr32[3] ) \
464
465 #define PF_MATCHA(n, a, m, b, f) \
466 pf_match_addr(n, a, m, b, f)
467
468 #define PF_ACPY(a, b, f) \
469 pf_addrcpy(a, b, f)
470
471 #define PF_AINC(a, f) \
472 pf_addr_inc(a, f)
473
474 #define PF_POOLMASK(a, b, c, d, f) \
475 pf_poolmask(a, b, c, d, f)
476
477 #else
478
479 /* Just IPv4 */
480 #ifdef PF_INET_ONLY
481
482 #define PF_AEQ(a, b, c) \
483 ((a)->addr32[0] == (b)->addr32[0])
484
485 #define PF_ANEQ(a, b, c) \
486 ((a)->addr32[0] != (b)->addr32[0])
487
488 #define PF_AZERO(a, c) \
489 (!(a)->addr32[0])
490
491 #define PF_MATCHA(n, a, m, b, f) \
492 pf_match_addr(n, a, m, b, f)
493
494 #define PF_ACPY(a, b, f) \
495 (a)->v4.s_addr = (b)->v4.s_addr
496
497 #define PF_AINC(a, f) \
498 do { \
499 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \
500 } while (0)
501
502 #define PF_POOLMASK(a, b, c, d, f) \
503 do { \
504 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \
505 (((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \
506 } while (0)
507
508 #endif /* PF_INET_ONLY */
509 #endif /* PF_INET6_ONLY */
510 #endif /* PF_INET_INET6 */
511
512 /*
513 * XXX callers not FIB-aware in our version of pf yet.
514 * OpenBSD fixed it later it seems, 2010/05/07 13:33:16 claudio.
515 */
516 #define PF_MISMATCHAW(aw, x, af, neg, ifp, rtid) \
517 ( \
518 (((aw)->type == PF_ADDR_NOROUTE && \
519 pf_routable((x), (af), NULL, (rtid))) || \
520 (((aw)->type == PF_ADDR_URPFFAILED && (ifp) != NULL && \
521 pf_routable((x), (af), (ifp), (rtid))) || \
522 ((aw)->type == PF_ADDR_TABLE && \
523 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \
524 ((aw)->type == PF_ADDR_DYNIFTL && \
525 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \
526 ((aw)->type == PF_ADDR_RANGE && \
527 !pf_match_addr_range(&(aw)->v.a.addr, \
528 &(aw)->v.a.mask, (x), (af))) || \
529 ((aw)->type == PF_ADDR_ADDRMASK && \
530 !PF_AZERO(&(aw)->v.a.mask, (af)) && \
531 !PF_MATCHA(0, &(aw)->v.a.addr, \
532 &(aw)->v.a.mask, (x), (af))))) != \
533 (neg) \
534 )
535
536 #define PF_ALGNMNT(off) (((off) % 2) == 0)
537
538 #ifdef _KERNEL
539
540 struct pf_kpooladdr {
541 struct pf_addr_wrap addr;
542 TAILQ_ENTRY(pf_kpooladdr) entries;
543 char ifname[IFNAMSIZ];
544 struct pfi_kkif *kif;
545 };
546
547 TAILQ_HEAD(pf_kpalist, pf_kpooladdr);
548
549 struct pf_kpool {
550 struct mtx mtx;
551 struct pf_kpalist list;
552 struct pf_kpooladdr *cur;
553 struct pf_poolhashkey key;
554 struct pf_addr counter;
555 struct pf_mape_portset mape;
556 int tblidx;
557 u_int16_t proxy_port[2];
558 u_int8_t opts;
559 };
560
561 struct pf_rule_actions {
562 uint16_t qid;
563 uint16_t pqid;
564 };
565
566 union pf_krule_ptr {
567 struct pf_krule *ptr;
568 u_int32_t nr;
569 };
570
571 struct pf_krule {
572 struct pf_rule_addr src;
573 struct pf_rule_addr dst;
574 union pf_krule_ptr skip[PF_SKIP_COUNT];
575 char label[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE];
576 uint32_t ridentifier;
577 char ifname[IFNAMSIZ];
578 char qname[PF_QNAME_SIZE];
579 char pqname[PF_QNAME_SIZE];
580 char tagname[PF_TAG_NAME_SIZE];
581 char match_tagname[PF_TAG_NAME_SIZE];
582
583 char overload_tblname[PF_TABLE_NAME_SIZE];
584
585 TAILQ_ENTRY(pf_krule) entries;
586 struct pf_kpool rpool;
587
588 struct pf_counter_u64 evaluations;
589 struct pf_counter_u64 packets[2];
590 struct pf_counter_u64 bytes[2];
591
592 struct pfi_kkif *kif;
593 struct pf_kanchor *anchor;
594 struct pfr_ktable *overload_tbl;
595
596 pf_osfp_t os_fingerprint;
597
598 int rtableid;
599 u_int32_t timeout[PFTM_MAX];
600 u_int32_t max_states;
601 u_int32_t max_src_nodes;
602 u_int32_t max_src_states;
603 u_int32_t max_src_conn;
604 struct {
605 u_int32_t limit;
606 u_int32_t seconds;
607 } max_src_conn_rate;
608 u_int16_t qid;
609 u_int16_t pqid;
610 u_int32_t nr;
611 u_int32_t prob;
612 uid_t cuid;
613 pid_t cpid;
614
615 counter_u64_t states_cur;
616 counter_u64_t states_tot;
617 counter_u64_t src_nodes;
618
619 u_int16_t return_icmp;
620 u_int16_t return_icmp6;
621 u_int16_t max_mss;
622 u_int16_t tag;
623 u_int16_t match_tag;
624 u_int16_t scrub_flags;
625
626 struct pf_rule_uid uid;
627 struct pf_rule_gid gid;
628
629 u_int32_t rule_flag;
630 uint32_t rule_ref;
631 u_int8_t action;
632 u_int8_t direction;
633 u_int8_t log;
634 u_int8_t logif;
635 u_int8_t quick;
636 u_int8_t ifnot;
637 u_int8_t match_tag_not;
638 u_int8_t natpass;
639
640 u_int8_t keep_state;
641 sa_family_t af;
642 u_int8_t proto;
643 u_int8_t type;
644 u_int8_t code;
645 u_int8_t flags;
646 u_int8_t flagset;
647 u_int8_t min_ttl;
648 u_int8_t allow_opts;
649 u_int8_t rt;
650 u_int8_t return_ttl;
651 u_int8_t tos;
652 u_int8_t set_tos;
653 u_int8_t anchor_relative;
654 u_int8_t anchor_wildcard;
655
656 u_int8_t flush;
657 u_int8_t prio;
658 u_int8_t set_prio[2];
659
660 struct {
661 struct pf_addr addr;
662 u_int16_t port;
663 } divert;
664
665 #ifdef PF_WANT_32_TO_64_COUNTER
666 LIST_ENTRY(pf_krule) allrulelist;
667 bool allrulelinked;
668 #endif
669 };
670
671 struct pf_ksrc_node {
672 LIST_ENTRY(pf_ksrc_node) entry;
673 struct pf_addr addr;
674 struct pf_addr raddr;
675 union pf_krule_ptr rule;
676 struct pfi_kkif *kif;
677 counter_u64_t bytes[2];
678 counter_u64_t packets[2];
679 u_int32_t states;
680 u_int32_t conn;
681 struct pf_threshold conn_rate;
682 u_int32_t creation;
683 u_int32_t expire;
684 sa_family_t af;
685 u_int8_t ruletype;
686 };
687 #endif
688
689 struct pf_state_scrub {
690 struct timeval pfss_last; /* time received last packet */
691 u_int32_t pfss_tsecr; /* last echoed timestamp */
692 u_int32_t pfss_tsval; /* largest timestamp */
693 u_int32_t pfss_tsval0; /* original timestamp */
694 u_int16_t pfss_flags;
695 #define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */
696 #define PFSS_PAWS 0x0010 /* stricter PAWS checks */
697 #define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */
698 #define PFSS_DATA_TS 0x0040 /* timestamp on data packets */
699 #define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */
700 u_int8_t pfss_ttl; /* stashed TTL */
701 u_int8_t pad;
702 u_int32_t pfss_ts_mod; /* timestamp modulation */
703 };
704
705 struct pf_state_host {
706 struct pf_addr addr;
707 u_int16_t port;
708 u_int16_t pad;
709 };
710
711 struct pf_state_peer {
712 struct pf_state_scrub *scrub; /* state is scrubbed */
713 u_int32_t seqlo; /* Max sequence number sent */
714 u_int32_t seqhi; /* Max the other end ACKd + win */
715 u_int32_t seqdiff; /* Sequence number modulator */
716 u_int16_t max_win; /* largest window (pre scaling) */
717 u_int16_t mss; /* Maximum segment size option */
718 u_int8_t state; /* active state level */
719 u_int8_t wscale; /* window scaling factor */
720 u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */
721 u_int8_t pad[1];
722 };
723
724 /* Keep synced with struct pf_state_key. */
725 struct pf_state_key_cmp {
726 struct pf_addr addr[2];
727 u_int16_t port[2];
728 sa_family_t af;
729 u_int8_t proto;
730 u_int8_t pad[2];
731 };
732
733 struct pf_state_key {
734 struct pf_addr addr[2];
735 u_int16_t port[2];
736 sa_family_t af;
737 u_int8_t proto;
738 u_int8_t pad[2];
739
740 LIST_ENTRY(pf_state_key) entry;
741 TAILQ_HEAD(, pf_kstate) states[2];
742 };
743
744 /* Keep synced with struct pf_kstate. */
745 struct pf_state_cmp {
746 u_int64_t id;
747 u_int32_t creatorid;
748 u_int8_t direction;
749 u_int8_t pad[3];
750 };
751
752 #define PFSTATE_ALLOWOPTS 0x01
753 #define PFSTATE_SLOPPY 0x02
754 /* was PFSTATE_PFLOW 0x04 */
755 #define PFSTATE_NOSYNC 0x08
756 #define PFSTATE_ACK 0x10
757 #define PFSTATE_SETPRIO 0x0200
758 #define PFSTATE_SETMASK (PFSTATE_SETPRIO)
759
760 struct pf_state_scrub_export {
761 uint16_t pfss_flags;
762 uint8_t pfss_ttl; /* stashed TTL */
763 #define PF_SCRUB_FLAG_VALID 0x01
764 uint8_t scrub_flag;
765 uint32_t pfss_ts_mod; /* timestamp modulation */
766 };
767
768 struct pf_state_key_export {
769 struct pf_addr addr[2];
770 uint16_t port[2];
771 };
772
773 struct pf_state_peer_export {
774 struct pf_state_scrub_export scrub; /* state is scrubbed */
775 uint32_t seqlo; /* Max sequence number sent */
776 uint32_t seqhi; /* Max the other end ACKd + win */
777 uint32_t seqdiff; /* Sequence number modulator */
778 uint16_t max_win; /* largest window (pre scaling) */
779 uint16_t mss; /* Maximum segment size option */
780 uint8_t state; /* active state level */
781 uint8_t wscale; /* window scaling factor */
782 uint8_t dummy[6];
783 };
784 _Static_assert(sizeof(struct pf_state_peer_export) == 32, "size incorrect");
785
786 struct pf_state_export {
787 uint64_t version;
788 #define PF_STATE_VERSION 20210706
789 uint64_t id;
790 char ifname[IFNAMSIZ];
791 char orig_ifname[IFNAMSIZ];
792 struct pf_state_key_export key[2];
793 struct pf_state_peer_export src;
794 struct pf_state_peer_export dst;
795 struct pf_addr rt_addr;
796 uint32_t rule;
797 uint32_t anchor;
798 uint32_t nat_rule;
799 uint32_t creation;
800 uint32_t expire;
801 uint32_t spare0;
802 uint64_t packets[2];
803 uint64_t bytes[2];
804 uint32_t creatorid;
805 uint32_t spare1;
806 sa_family_t af;
807 uint8_t proto;
808 uint8_t direction;
809 uint8_t log;
810 uint8_t state_flags;
811 uint8_t timeout;
812 uint8_t sync_flags;
813 uint8_t updates;
814
815 uint8_t spare[112];
816 };
817 _Static_assert(sizeof(struct pf_state_export) == 384, "size incorrect");
818
819 #ifdef _KERNEL
820 struct pf_kstate {
821 /*
822 * Area shared with pf_state_cmp
823 */
824 u_int64_t id;
825 u_int32_t creatorid;
826 u_int8_t direction;
827 u_int8_t pad[3];
828 /*
829 * end of the area
830 */
831
832 u_int8_t state_flags;
833 u_int8_t timeout;
834 u_int8_t sync_state; /* PFSYNC_S_x */
835 u_int8_t sync_updates; /* XXX */
836 u_int refs;
837 struct mtx *lock;
838 TAILQ_ENTRY(pf_kstate) sync_list;
839 TAILQ_ENTRY(pf_kstate) key_list[2];
840 LIST_ENTRY(pf_kstate) entry;
841 struct pf_state_peer src;
842 struct pf_state_peer dst;
843 union pf_krule_ptr rule;
844 union pf_krule_ptr anchor;
845 union pf_krule_ptr nat_rule;
846 struct pf_addr rt_addr;
847 struct pf_state_key *key[2]; /* addresses stack and wire */
848 struct pfi_kkif *kif;
849 struct pfi_kkif *orig_kif; /* The real kif, even if we're a floating state (i.e. if == V_pfi_all). */
850 struct pfi_kkif *rt_kif;
851 struct pf_ksrc_node *src_node;
852 struct pf_ksrc_node *nat_src_node;
853 u_int64_t packets[2];
854 u_int64_t bytes[2];
855 u_int32_t creation;
856 u_int32_t expire;
857 u_int32_t pfsync_time;
858 u_int16_t qid;
859 u_int16_t pqid;
860 u_int16_t tag;
861 u_int8_t log;
862 };
863
864 /*
865 * Size <= fits 13 objects per page on LP64. Try to not grow the struct beyond that.
866 */
867 _Static_assert(sizeof(struct pf_kstate) <= 312, "pf_kstate size crosses 312 bytes");
868 #endif
869
870 /*
871 * Unified state structures for pulling states out of the kernel
872 * used by pfsync(4) and the pf(4) ioctl.
873 */
874 struct pfsync_state_scrub {
875 u_int16_t pfss_flags;
876 u_int8_t pfss_ttl; /* stashed TTL */
877 #define PFSYNC_SCRUB_FLAG_VALID 0x01
878 u_int8_t scrub_flag;
879 u_int32_t pfss_ts_mod; /* timestamp modulation */
880 } __packed;
881
882 struct pfsync_state_peer {
883 struct pfsync_state_scrub scrub; /* state is scrubbed */
884 u_int32_t seqlo; /* Max sequence number sent */
885 u_int32_t seqhi; /* Max the other end ACKd + win */
886 u_int32_t seqdiff; /* Sequence number modulator */
887 u_int16_t max_win; /* largest window (pre scaling) */
888 u_int16_t mss; /* Maximum segment size option */
889 u_int8_t state; /* active state level */
890 u_int8_t wscale; /* window scaling factor */
891 u_int8_t pad[6];
892 } __packed;
893
894 struct pfsync_state_key {
895 struct pf_addr addr[2];
896 u_int16_t port[2];
897 };
898
899 struct pfsync_state {
900 u_int64_t id;
901 char ifname[IFNAMSIZ];
902 struct pfsync_state_key key[2];
903 struct pfsync_state_peer src;
904 struct pfsync_state_peer dst;
905 struct pf_addr rt_addr;
906 u_int32_t rule;
907 u_int32_t anchor;
908 u_int32_t nat_rule;
909 u_int32_t creation;
910 u_int32_t expire;
911 u_int32_t packets[2][2];
912 u_int32_t bytes[2][2];
913 u_int32_t creatorid;
914 sa_family_t af;
915 u_int8_t proto;
916 u_int8_t direction;
917 u_int8_t __spare[2];
918 u_int8_t log;
919 u_int8_t state_flags;
920 u_int8_t timeout;
921 u_int8_t sync_flags;
922 u_int8_t updates;
923 } __packed;
924
925 #ifdef _KERNEL
926 /* pfsync */
927 typedef int pfsync_state_import_t(struct pfsync_state *, u_int8_t);
928 typedef void pfsync_insert_state_t(struct pf_kstate *);
929 typedef void pfsync_update_state_t(struct pf_kstate *);
930 typedef void pfsync_delete_state_t(struct pf_kstate *);
931 typedef void pfsync_clear_states_t(u_int32_t, const char *);
932 typedef int pfsync_defer_t(struct pf_kstate *, struct mbuf *);
933 typedef void pfsync_detach_ifnet_t(struct ifnet *);
934
935 VNET_DECLARE(pfsync_state_import_t *, pfsync_state_import_ptr);
936 #define V_pfsync_state_import_ptr VNET(pfsync_state_import_ptr)
937 VNET_DECLARE(pfsync_insert_state_t *, pfsync_insert_state_ptr);
938 #define V_pfsync_insert_state_ptr VNET(pfsync_insert_state_ptr)
939 VNET_DECLARE(pfsync_update_state_t *, pfsync_update_state_ptr);
940 #define V_pfsync_update_state_ptr VNET(pfsync_update_state_ptr)
941 VNET_DECLARE(pfsync_delete_state_t *, pfsync_delete_state_ptr);
942 #define V_pfsync_delete_state_ptr VNET(pfsync_delete_state_ptr)
943 VNET_DECLARE(pfsync_clear_states_t *, pfsync_clear_states_ptr);
944 #define V_pfsync_clear_states_ptr VNET(pfsync_clear_states_ptr)
945 VNET_DECLARE(pfsync_defer_t *, pfsync_defer_ptr);
946 #define V_pfsync_defer_ptr VNET(pfsync_defer_ptr)
947 extern pfsync_detach_ifnet_t *pfsync_detach_ifnet_ptr;
948
949 void pfsync_state_export(struct pfsync_state *,
950 struct pf_kstate *);
951 void pf_state_export(struct pf_state_export *,
952 struct pf_kstate *);
953
954 /* pflog */
955 struct pf_kruleset;
956 struct pf_pdesc;
957 typedef int pflog_packet_t(struct pfi_kkif *, struct mbuf *, sa_family_t,
958 u_int8_t, u_int8_t, struct pf_krule *, struct pf_krule *,
959 struct pf_kruleset *, struct pf_pdesc *, int);
960 extern pflog_packet_t *pflog_packet_ptr;
961
962 #endif /* _KERNEL */
963
964 #define PFSYNC_FLAG_SRCNODE 0x04
965 #define PFSYNC_FLAG_NATSRCNODE 0x08
966
967 /* for copies to/from network byte order */
968 /* ioctl interface also uses network byte order */
969 #define pf_state_peer_hton(s,d) do { \
970 (d)->seqlo = htonl((s)->seqlo); \
971 (d)->seqhi = htonl((s)->seqhi); \
972 (d)->seqdiff = htonl((s)->seqdiff); \
973 (d)->max_win = htons((s)->max_win); \
974 (d)->mss = htons((s)->mss); \
975 (d)->state = (s)->state; \
976 (d)->wscale = (s)->wscale; \
977 if ((s)->scrub) { \
978 (d)->scrub.pfss_flags = \
979 htons((s)->scrub->pfss_flags & PFSS_TIMESTAMP); \
980 (d)->scrub.pfss_ttl = (s)->scrub->pfss_ttl; \
981 (d)->scrub.pfss_ts_mod = htonl((s)->scrub->pfss_ts_mod);\
982 (d)->scrub.scrub_flag = PFSYNC_SCRUB_FLAG_VALID; \
983 } \
984 } while (0)
985
986 #define pf_state_peer_ntoh(s,d) do { \
987 (d)->seqlo = ntohl((s)->seqlo); \
988 (d)->seqhi = ntohl((s)->seqhi); \
989 (d)->seqdiff = ntohl((s)->seqdiff); \
990 (d)->max_win = ntohs((s)->max_win); \
991 (d)->mss = ntohs((s)->mss); \
992 (d)->state = (s)->state; \
993 (d)->wscale = (s)->wscale; \
994 if ((s)->scrub.scrub_flag == PFSYNC_SCRUB_FLAG_VALID && \
995 (d)->scrub != NULL) { \
996 (d)->scrub->pfss_flags = \
997 ntohs((s)->scrub.pfss_flags) & PFSS_TIMESTAMP; \
998 (d)->scrub->pfss_ttl = (s)->scrub.pfss_ttl; \
999 (d)->scrub->pfss_ts_mod = ntohl((s)->scrub.pfss_ts_mod);\
1000 } \
1001 } while (0)
1002
1003 #define pf_state_counter_hton(s,d) do { \
1004 d[0] = htonl((s>>32)&0xffffffff); \
1005 d[1] = htonl(s&0xffffffff); \
1006 } while (0)
1007
1008 #define pf_state_counter_from_pfsync(s) \
1009 (((u_int64_t)(s[0])<<32) | (u_int64_t)(s[1]))
1010
1011 #define pf_state_counter_ntoh(s,d) do { \
1012 d = ntohl(s[0]); \
1013 d = d<<32; \
1014 d += ntohl(s[1]); \
1015 } while (0)
1016
1017 TAILQ_HEAD(pf_krulequeue, pf_krule);
1018
1019 struct pf_kanchor;
1020
1021 struct pf_kruleset {
1022 struct {
1023 struct pf_krulequeue queues[2];
1024 struct {
1025 struct pf_krulequeue *ptr;
1026 struct pf_krule **ptr_array;
1027 u_int32_t rcount;
1028 u_int32_t ticket;
1029 int open;
1030 } active, inactive;
1031 } rules[PF_RULESET_MAX];
1032 struct pf_kanchor *anchor;
1033 u_int32_t tticket;
1034 int tables;
1035 int topen;
1036 };
1037
1038 RB_HEAD(pf_kanchor_global, pf_kanchor);
1039 RB_HEAD(pf_kanchor_node, pf_kanchor);
1040 struct pf_kanchor {
1041 RB_ENTRY(pf_kanchor) entry_global;
1042 RB_ENTRY(pf_kanchor) entry_node;
1043 struct pf_kanchor *parent;
1044 struct pf_kanchor_node children;
1045 char name[PF_ANCHOR_NAME_SIZE];
1046 char path[MAXPATHLEN];
1047 struct pf_kruleset ruleset;
1048 int refcnt; /* anchor rules */
1049 };
1050 RB_PROTOTYPE(pf_kanchor_global, pf_kanchor, entry_global, pf_anchor_compare);
1051 RB_PROTOTYPE(pf_kanchor_node, pf_kanchor, entry_node, pf_kanchor_compare);
1052
1053 #define PF_RESERVED_ANCHOR "_pf"
1054
1055 #define PFR_TFLAG_PERSIST 0x00000001
1056 #define PFR_TFLAG_CONST 0x00000002
1057 #define PFR_TFLAG_ACTIVE 0x00000004
1058 #define PFR_TFLAG_INACTIVE 0x00000008
1059 #define PFR_TFLAG_REFERENCED 0x00000010
1060 #define PFR_TFLAG_REFDANCHOR 0x00000020
1061 #define PFR_TFLAG_COUNTERS 0x00000040
1062 /* Adjust masks below when adding flags. */
1063 #define PFR_TFLAG_USRMASK (PFR_TFLAG_PERSIST | \
1064 PFR_TFLAG_CONST | \
1065 PFR_TFLAG_COUNTERS)
1066 #define PFR_TFLAG_SETMASK (PFR_TFLAG_ACTIVE | \
1067 PFR_TFLAG_INACTIVE | \
1068 PFR_TFLAG_REFERENCED | \
1069 PFR_TFLAG_REFDANCHOR)
1070 #define PFR_TFLAG_ALLMASK (PFR_TFLAG_PERSIST | \
1071 PFR_TFLAG_CONST | \
1072 PFR_TFLAG_ACTIVE | \
1073 PFR_TFLAG_INACTIVE | \
1074 PFR_TFLAG_REFERENCED | \
1075 PFR_TFLAG_REFDANCHOR | \
1076 PFR_TFLAG_COUNTERS)
1077
1078 struct pf_kanchor_stackframe;
1079
1080 struct pfr_table {
1081 char pfrt_anchor[MAXPATHLEN];
1082 char pfrt_name[PF_TABLE_NAME_SIZE];
1083 u_int32_t pfrt_flags;
1084 u_int8_t pfrt_fback;
1085 };
1086
1087 enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED,
1088 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE,
1089 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_NOCOUNT, PFR_FB_MAX };
1090
1091 struct pfr_addr {
1092 union {
1093 struct in_addr _pfra_ip4addr;
1094 struct in6_addr _pfra_ip6addr;
1095 } pfra_u;
1096 u_int8_t pfra_af;
1097 u_int8_t pfra_net;
1098 u_int8_t pfra_not;
1099 u_int8_t pfra_fback;
1100 };
1101 #define pfra_ip4addr pfra_u._pfra_ip4addr
1102 #define pfra_ip6addr pfra_u._pfra_ip6addr
1103
1104 enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX };
1105 enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX };
1106 enum { PFR_TYPE_PACKETS, PFR_TYPE_BYTES, PFR_TYPE_MAX };
1107 #define PFR_NUM_COUNTERS (PFR_DIR_MAX * PFR_OP_ADDR_MAX * PFR_TYPE_MAX)
1108 #define PFR_OP_XPASS PFR_OP_ADDR_MAX
1109
1110 struct pfr_astats {
1111 struct pfr_addr pfras_a;
1112 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
1113 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
1114 long pfras_tzero;
1115 };
1116
1117 enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX };
1118
1119 struct pfr_tstats {
1120 struct pfr_table pfrts_t;
1121 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
1122 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
1123 u_int64_t pfrts_match;
1124 u_int64_t pfrts_nomatch;
1125 long pfrts_tzero;
1126 int pfrts_cnt;
1127 int pfrts_refcnt[PFR_REFCNT_MAX];
1128 };
1129
1130 #ifdef _KERNEL
1131
1132 struct pfr_kstate_counter {
1133 counter_u64_t pkc_pcpu;
1134 u_int64_t pkc_zero;
1135 };
1136
1137 static inline int
pfr_kstate_counter_init(struct pfr_kstate_counter * pfrc,int flags)1138 pfr_kstate_counter_init(struct pfr_kstate_counter *pfrc, int flags)
1139 {
1140
1141 pfrc->pkc_zero = 0;
1142 pfrc->pkc_pcpu = counter_u64_alloc(flags);
1143 if (pfrc->pkc_pcpu == NULL)
1144 return (ENOMEM);
1145 return (0);
1146 }
1147
1148 static inline void
pfr_kstate_counter_deinit(struct pfr_kstate_counter * pfrc)1149 pfr_kstate_counter_deinit(struct pfr_kstate_counter *pfrc)
1150 {
1151
1152 counter_u64_free(pfrc->pkc_pcpu);
1153 }
1154
1155 static inline u_int64_t
pfr_kstate_counter_fetch(struct pfr_kstate_counter * pfrc)1156 pfr_kstate_counter_fetch(struct pfr_kstate_counter *pfrc)
1157 {
1158 u_int64_t c;
1159
1160 c = counter_u64_fetch(pfrc->pkc_pcpu);
1161 c -= pfrc->pkc_zero;
1162 return (c);
1163 }
1164
1165 static inline void
pfr_kstate_counter_zero(struct pfr_kstate_counter * pfrc)1166 pfr_kstate_counter_zero(struct pfr_kstate_counter *pfrc)
1167 {
1168 u_int64_t c;
1169
1170 c = counter_u64_fetch(pfrc->pkc_pcpu);
1171 pfrc->pkc_zero = c;
1172 }
1173
1174 static inline void
pfr_kstate_counter_add(struct pfr_kstate_counter * pfrc,int64_t n)1175 pfr_kstate_counter_add(struct pfr_kstate_counter *pfrc, int64_t n)
1176 {
1177
1178 counter_u64_add(pfrc->pkc_pcpu, n);
1179 }
1180
1181 struct pfr_ktstats {
1182 struct pfr_table pfrts_t;
1183 struct pfr_kstate_counter pfrkts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
1184 struct pfr_kstate_counter pfrkts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
1185 struct pfr_kstate_counter pfrkts_match;
1186 struct pfr_kstate_counter pfrkts_nomatch;
1187 long pfrkts_tzero;
1188 int pfrkts_cnt;
1189 int pfrkts_refcnt[PFR_REFCNT_MAX];
1190 };
1191
1192 #endif /* _KERNEL */
1193
1194 #define pfrts_name pfrts_t.pfrt_name
1195 #define pfrts_flags pfrts_t.pfrt_flags
1196
1197 #ifndef _SOCKADDR_UNION_DEFINED
1198 #define _SOCKADDR_UNION_DEFINED
1199 union sockaddr_union {
1200 struct sockaddr sa;
1201 struct sockaddr_in sin;
1202 struct sockaddr_in6 sin6;
1203 };
1204 #endif /* _SOCKADDR_UNION_DEFINED */
1205
1206 struct pfr_kcounters {
1207 counter_u64_t pfrkc_counters;
1208 long pfrkc_tzero;
1209 };
1210 #define pfr_kentry_counter(kc, dir, op, t) \
1211 ((kc)->pfrkc_counters + \
1212 (dir) * PFR_OP_ADDR_MAX * PFR_TYPE_MAX + (op) * PFR_TYPE_MAX + (t))
1213
1214 #ifdef _KERNEL
1215 SLIST_HEAD(pfr_kentryworkq, pfr_kentry);
1216 struct pfr_kentry {
1217 struct radix_node pfrke_node[2];
1218 union sockaddr_union pfrke_sa;
1219 SLIST_ENTRY(pfr_kentry) pfrke_workq;
1220 struct pfr_kcounters pfrke_counters;
1221 u_int8_t pfrke_af;
1222 u_int8_t pfrke_net;
1223 u_int8_t pfrke_not;
1224 u_int8_t pfrke_mark;
1225 };
1226
1227 SLIST_HEAD(pfr_ktableworkq, pfr_ktable);
1228 RB_HEAD(pfr_ktablehead, pfr_ktable);
1229 struct pfr_ktable {
1230 struct pfr_ktstats pfrkt_kts;
1231 RB_ENTRY(pfr_ktable) pfrkt_tree;
1232 SLIST_ENTRY(pfr_ktable) pfrkt_workq;
1233 struct radix_node_head *pfrkt_ip4;
1234 struct radix_node_head *pfrkt_ip6;
1235 struct pfr_ktable *pfrkt_shadow;
1236 struct pfr_ktable *pfrkt_root;
1237 struct pf_kruleset *pfrkt_rs;
1238 long pfrkt_larg;
1239 int pfrkt_nflags;
1240 };
1241 #define pfrkt_t pfrkt_kts.pfrts_t
1242 #define pfrkt_name pfrkt_t.pfrt_name
1243 #define pfrkt_anchor pfrkt_t.pfrt_anchor
1244 #define pfrkt_ruleset pfrkt_t.pfrt_ruleset
1245 #define pfrkt_flags pfrkt_t.pfrt_flags
1246 #define pfrkt_cnt pfrkt_kts.pfrkts_cnt
1247 #define pfrkt_refcnt pfrkt_kts.pfrkts_refcnt
1248 #define pfrkt_packets pfrkt_kts.pfrkts_packets
1249 #define pfrkt_bytes pfrkt_kts.pfrkts_bytes
1250 #define pfrkt_match pfrkt_kts.pfrkts_match
1251 #define pfrkt_nomatch pfrkt_kts.pfrkts_nomatch
1252 #define pfrkt_tzero pfrkt_kts.pfrkts_tzero
1253 #endif
1254
1255 #ifdef _KERNEL
1256 struct pfi_kkif {
1257 char pfik_name[IFNAMSIZ];
1258 union {
1259 RB_ENTRY(pfi_kkif) _pfik_tree;
1260 LIST_ENTRY(pfi_kkif) _pfik_list;
1261 } _pfik_glue;
1262 #define pfik_tree _pfik_glue._pfik_tree
1263 #define pfik_list _pfik_glue._pfik_list
1264 struct pf_counter_u64 pfik_packets[2][2][2];
1265 struct pf_counter_u64 pfik_bytes[2][2][2];
1266 u_int32_t pfik_tzero;
1267 u_int pfik_flags;
1268 struct ifnet *pfik_ifp;
1269 struct ifg_group *pfik_group;
1270 u_int pfik_rulerefs;
1271 TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs;
1272 #ifdef PF_WANT_32_TO_64_COUNTER
1273 LIST_ENTRY(pfi_kkif) pfik_allkiflist;
1274 #endif
1275 };
1276 #endif
1277
1278 #define PFI_IFLAG_REFS 0x0001 /* has state references */
1279 #define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */
1280
1281 #ifdef _KERNEL
1282 struct pf_pdesc {
1283 struct {
1284 int done;
1285 uid_t uid;
1286 gid_t gid;
1287 } lookup;
1288 u_int64_t tot_len; /* Make Mickey money */
1289 union pf_headers {
1290 struct tcphdr tcp;
1291 struct udphdr udp;
1292 struct icmp icmp;
1293 #ifdef INET6
1294 struct icmp6_hdr icmp6;
1295 #endif /* INET6 */
1296 char any[0];
1297 } hdr;
1298
1299 struct pf_krule *nat_rule; /* nat/rdr rule applied to packet */
1300 struct pf_addr *src; /* src address */
1301 struct pf_addr *dst; /* dst address */
1302 u_int16_t *sport;
1303 u_int16_t *dport;
1304 struct pf_mtag *pf_mtag;
1305 struct pf_rule_actions act;
1306
1307 u_int32_t p_len; /* total length of payload */
1308
1309 u_int16_t *ip_sum;
1310 u_int16_t *proto_sum;
1311 u_int16_t flags; /* Let SCRUB trigger behavior in
1312 * state code. Easier than tags */
1313 #define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */
1314 #define PFDESC_IP_REAS 0x0002 /* IP frags would've been reassembled */
1315 sa_family_t af;
1316 u_int8_t proto;
1317 u_int8_t tos;
1318 u_int8_t dir; /* direction */
1319 u_int8_t sidx; /* key index for source */
1320 u_int8_t didx; /* key index for destination */
1321 };
1322 #endif
1323
1324 /* flags for RDR options */
1325 #define PF_DPORT_RANGE 0x01 /* Dest port uses range */
1326 #define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */
1327
1328 /* UDP state enumeration */
1329 #define PFUDPS_NO_TRAFFIC 0
1330 #define PFUDPS_SINGLE 1
1331 #define PFUDPS_MULTIPLE 2
1332
1333 #define PFUDPS_NSTATES 3 /* number of state levels */
1334
1335 #define PFUDPS_NAMES { \
1336 "NO_TRAFFIC", \
1337 "SINGLE", \
1338 "MULTIPLE", \
1339 NULL \
1340 }
1341
1342 /* Other protocol state enumeration */
1343 #define PFOTHERS_NO_TRAFFIC 0
1344 #define PFOTHERS_SINGLE 1
1345 #define PFOTHERS_MULTIPLE 2
1346
1347 #define PFOTHERS_NSTATES 3 /* number of state levels */
1348
1349 #define PFOTHERS_NAMES { \
1350 "NO_TRAFFIC", \
1351 "SINGLE", \
1352 "MULTIPLE", \
1353 NULL \
1354 }
1355
1356 #define ACTION_SET(a, x) \
1357 do { \
1358 if ((a) != NULL) \
1359 *(a) = (x); \
1360 } while (0)
1361
1362 #define REASON_SET(a, x) \
1363 do { \
1364 if ((a) != NULL) \
1365 *(a) = (x); \
1366 if (x < PFRES_MAX) \
1367 counter_u64_add(V_pf_status.counters[x], 1); \
1368 } while (0)
1369
1370 enum pf_syncookies_mode {
1371 PF_SYNCOOKIES_NEVER = 0,
1372 PF_SYNCOOKIES_ALWAYS = 1,
1373 PF_SYNCOOKIES_ADAPTIVE = 2,
1374 PF_SYNCOOKIES_MODE_MAX = PF_SYNCOOKIES_ADAPTIVE
1375 };
1376
1377 #define PF_SYNCOOKIES_HIWATPCT 25
1378 #define PF_SYNCOOKIES_LOWATPCT (PF_SYNCOOKIES_HIWATPCT / 2)
1379
1380 #ifdef _KERNEL
1381 struct pf_kstatus {
1382 counter_u64_t counters[PFRES_MAX]; /* reason for passing/dropping */
1383 counter_u64_t lcounters[KLCNT_MAX]; /* limit counters */
1384 struct pf_counter_u64 fcounters[FCNT_MAX]; /* state operation counters */
1385 counter_u64_t scounters[SCNT_MAX]; /* src_node operation counters */
1386 uint32_t states;
1387 uint32_t src_nodes;
1388 uint32_t running;
1389 uint32_t since;
1390 uint32_t debug;
1391 uint32_t hostid;
1392 char ifname[IFNAMSIZ];
1393 uint8_t pf_chksum[PF_MD5_DIGEST_LENGTH];
1394 bool keep_counters;
1395 enum pf_syncookies_mode syncookies_mode;
1396 bool syncookies_active;
1397 uint64_t syncookies_inflight[2];
1398 uint32_t states_halfopen;
1399 };
1400 #endif
1401
1402 struct pf_divert {
1403 union {
1404 struct in_addr ipv4;
1405 struct in6_addr ipv6;
1406 } addr;
1407 u_int16_t port;
1408 };
1409
1410 #define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */
1411 #define PFR_KENTRY_HIWAT 200000 /* Number of table entries */
1412
1413 /*
1414 * Limit the length of the fragment queue traversal. Remember
1415 * search entry points based on the fragment offset.
1416 */
1417 #define PF_FRAG_ENTRY_POINTS 16
1418
1419 /*
1420 * The number of entries in the fragment queue must be limited
1421 * to avoid DoS by linear seaching. Instead of a global limit,
1422 * use a limit per entry point. For large packets these sum up.
1423 */
1424 #define PF_FRAG_ENTRY_LIMIT 64
1425
1426 /*
1427 * ioctl parameter structures
1428 */
1429
1430 struct pfioc_pooladdr {
1431 u_int32_t action;
1432 u_int32_t ticket;
1433 u_int32_t nr;
1434 u_int32_t r_num;
1435 u_int8_t r_action;
1436 u_int8_t r_last;
1437 u_int8_t af;
1438 char anchor[MAXPATHLEN];
1439 struct pf_pooladdr addr;
1440 };
1441
1442 struct pfioc_rule {
1443 u_int32_t action;
1444 u_int32_t ticket;
1445 u_int32_t pool_ticket;
1446 u_int32_t nr;
1447 char anchor[MAXPATHLEN];
1448 char anchor_call[MAXPATHLEN];
1449 struct pf_rule rule;
1450 };
1451
1452 struct pfioc_natlook {
1453 struct pf_addr saddr;
1454 struct pf_addr daddr;
1455 struct pf_addr rsaddr;
1456 struct pf_addr rdaddr;
1457 u_int16_t sport;
1458 u_int16_t dport;
1459 u_int16_t rsport;
1460 u_int16_t rdport;
1461 sa_family_t af;
1462 u_int8_t proto;
1463 u_int8_t direction;
1464 };
1465
1466 struct pfioc_state {
1467 struct pfsync_state state;
1468 };
1469
1470 struct pfioc_src_node_kill {
1471 sa_family_t psnk_af;
1472 struct pf_rule_addr psnk_src;
1473 struct pf_rule_addr psnk_dst;
1474 u_int psnk_killed;
1475 };
1476
1477 #ifdef _KERNEL
1478 struct pf_kstate_kill {
1479 struct pf_state_cmp psk_pfcmp;
1480 sa_family_t psk_af;
1481 int psk_proto;
1482 struct pf_rule_addr psk_src;
1483 struct pf_rule_addr psk_dst;
1484 struct pf_rule_addr psk_rt_addr;
1485 char psk_ifname[IFNAMSIZ];
1486 char psk_label[PF_RULE_LABEL_SIZE];
1487 u_int psk_killed;
1488 bool psk_kill_match;
1489 };
1490 #endif
1491
1492 struct pfioc_state_kill {
1493 struct pf_state_cmp psk_pfcmp;
1494 sa_family_t psk_af;
1495 int psk_proto;
1496 struct pf_rule_addr psk_src;
1497 struct pf_rule_addr psk_dst;
1498 char psk_ifname[IFNAMSIZ];
1499 char psk_label[PF_RULE_LABEL_SIZE];
1500 u_int psk_killed;
1501 };
1502
1503 struct pfioc_states {
1504 int ps_len;
1505 union {
1506 caddr_t psu_buf;
1507 struct pfsync_state *psu_states;
1508 } ps_u;
1509 #define ps_buf ps_u.psu_buf
1510 #define ps_states ps_u.psu_states
1511 };
1512
1513 struct pfioc_states_v2 {
1514 int ps_len;
1515 uint64_t ps_req_version;
1516 union {
1517 caddr_t psu_buf;
1518 struct pf_state_export *psu_states;
1519 } ps_u;
1520 #define ps_buf ps_u.psu_buf
1521 #define ps_states ps_u.psu_states
1522 };
1523
1524 struct pfioc_src_nodes {
1525 int psn_len;
1526 union {
1527 caddr_t psu_buf;
1528 struct pf_src_node *psu_src_nodes;
1529 } psn_u;
1530 #define psn_buf psn_u.psu_buf
1531 #define psn_src_nodes psn_u.psu_src_nodes
1532 };
1533
1534 struct pfioc_if {
1535 char ifname[IFNAMSIZ];
1536 };
1537
1538 struct pfioc_tm {
1539 int timeout;
1540 int seconds;
1541 };
1542
1543 struct pfioc_limit {
1544 int index;
1545 unsigned limit;
1546 };
1547
1548 struct pfioc_altq_v0 {
1549 u_int32_t action;
1550 u_int32_t ticket;
1551 u_int32_t nr;
1552 struct pf_altq_v0 altq;
1553 };
1554
1555 struct pfioc_altq_v1 {
1556 u_int32_t action;
1557 u_int32_t ticket;
1558 u_int32_t nr;
1559 /*
1560 * Placed here so code that only uses the above parameters can be
1561 * written entirely in terms of the v0 or v1 type.
1562 */
1563 u_int32_t version;
1564 struct pf_altq_v1 altq;
1565 };
1566
1567 /*
1568 * Latest version of struct pfioc_altq_vX. This must move in lock-step with
1569 * the latest version of struct pf_altq_vX as it has that struct as a
1570 * member.
1571 */
1572 #define PFIOC_ALTQ_VERSION PF_ALTQ_VERSION
1573
1574 struct pfioc_qstats_v0 {
1575 u_int32_t ticket;
1576 u_int32_t nr;
1577 void *buf;
1578 int nbytes;
1579 u_int8_t scheduler;
1580 };
1581
1582 struct pfioc_qstats_v1 {
1583 u_int32_t ticket;
1584 u_int32_t nr;
1585 void *buf;
1586 int nbytes;
1587 u_int8_t scheduler;
1588 /*
1589 * Placed here so code that only uses the above parameters can be
1590 * written entirely in terms of the v0 or v1 type.
1591 */
1592 u_int32_t version; /* Requested version of stats struct */
1593 };
1594
1595 /* Latest version of struct pfioc_qstats_vX */
1596 #define PFIOC_QSTATS_VERSION 1
1597
1598 struct pfioc_ruleset {
1599 u_int32_t nr;
1600 char path[MAXPATHLEN];
1601 char name[PF_ANCHOR_NAME_SIZE];
1602 };
1603
1604 #define PF_RULESET_ALTQ (PF_RULESET_MAX)
1605 #define PF_RULESET_TABLE (PF_RULESET_MAX+1)
1606 struct pfioc_trans {
1607 int size; /* number of elements */
1608 int esize; /* size of each element in bytes */
1609 struct pfioc_trans_e {
1610 int rs_num;
1611 char anchor[MAXPATHLEN];
1612 u_int32_t ticket;
1613 } *array;
1614 };
1615
1616 #define PFR_FLAG_ATOMIC 0x00000001 /* unused */
1617 #define PFR_FLAG_DUMMY 0x00000002
1618 #define PFR_FLAG_FEEDBACK 0x00000004
1619 #define PFR_FLAG_CLSTATS 0x00000008
1620 #define PFR_FLAG_ADDRSTOO 0x00000010
1621 #define PFR_FLAG_REPLACE 0x00000020
1622 #define PFR_FLAG_ALLRSETS 0x00000040
1623 #define PFR_FLAG_ALLMASK 0x0000007F
1624 #ifdef _KERNEL
1625 #define PFR_FLAG_USERIOCTL 0x10000000
1626 #endif
1627
1628 struct pfioc_table {
1629 struct pfr_table pfrio_table;
1630 void *pfrio_buffer;
1631 int pfrio_esize;
1632 int pfrio_size;
1633 int pfrio_size2;
1634 int pfrio_nadd;
1635 int pfrio_ndel;
1636 int pfrio_nchange;
1637 int pfrio_flags;
1638 u_int32_t pfrio_ticket;
1639 };
1640 #define pfrio_exists pfrio_nadd
1641 #define pfrio_nzero pfrio_nadd
1642 #define pfrio_nmatch pfrio_nadd
1643 #define pfrio_naddr pfrio_size2
1644 #define pfrio_setflag pfrio_size2
1645 #define pfrio_clrflag pfrio_nadd
1646
1647 struct pfioc_iface {
1648 char pfiio_name[IFNAMSIZ];
1649 void *pfiio_buffer;
1650 int pfiio_esize;
1651 int pfiio_size;
1652 int pfiio_nzero;
1653 int pfiio_flags;
1654 };
1655
1656 /*
1657 * ioctl operations
1658 */
1659
1660 #define DIOCSTART _IO ('D', 1)
1661 #define DIOCSTOP _IO ('D', 2)
1662 #define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule)
1663 #define DIOCADDRULENV _IOWR('D', 4, struct pfioc_nv)
1664 #define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule)
1665 #define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule)
1666 #define DIOCGETRULENV _IOWR('D', 7, struct pfioc_nv)
1667 /* XXX cut 8 - 17 */
1668 #define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill)
1669 #define DIOCCLRSTATESNV _IOWR('D', 18, struct pfioc_nv)
1670 #define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state)
1671 #define DIOCGETSTATENV _IOWR('D', 19, struct pfioc_nv)
1672 #define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if)
1673 #define DIOCGETSTATUS _IOWR('D', 21, struct pf_status)
1674 #define DIOCGETSTATUSNV _IOWR('D', 21, struct pfioc_nv)
1675 #define DIOCCLRSTATUS _IO ('D', 22)
1676 #define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook)
1677 #define DIOCSETDEBUG _IOWR('D', 24, u_int32_t)
1678 #define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states)
1679 #define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule)
1680 /* XXX cut 26 - 28 */
1681 #define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm)
1682 #define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm)
1683 #define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state)
1684 #define DIOCCLRRULECTRS _IO ('D', 38)
1685 #define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit)
1686 #define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit)
1687 #define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill)
1688 #define DIOCKILLSTATESNV _IOWR('D', 41, struct pfioc_nv)
1689 #define DIOCSTARTALTQ _IO ('D', 42)
1690 #define DIOCSTOPALTQ _IO ('D', 43)
1691 #define DIOCADDALTQV0 _IOWR('D', 45, struct pfioc_altq_v0)
1692 #define DIOCADDALTQV1 _IOWR('D', 45, struct pfioc_altq_v1)
1693 #define DIOCGETALTQSV0 _IOWR('D', 47, struct pfioc_altq_v0)
1694 #define DIOCGETALTQSV1 _IOWR('D', 47, struct pfioc_altq_v1)
1695 #define DIOCGETALTQV0 _IOWR('D', 48, struct pfioc_altq_v0)
1696 #define DIOCGETALTQV1 _IOWR('D', 48, struct pfioc_altq_v1)
1697 #define DIOCCHANGEALTQV0 _IOWR('D', 49, struct pfioc_altq_v0)
1698 #define DIOCCHANGEALTQV1 _IOWR('D', 49, struct pfioc_altq_v1)
1699 #define DIOCGETQSTATSV0 _IOWR('D', 50, struct pfioc_qstats_v0)
1700 #define DIOCGETQSTATSV1 _IOWR('D', 50, struct pfioc_qstats_v1)
1701 #define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr)
1702 #define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr)
1703 #define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr)
1704 #define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr)
1705 #define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr)
1706 /* XXX cut 55 - 57 */
1707 #define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset)
1708 #define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset)
1709 #define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table)
1710 #define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table)
1711 #define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table)
1712 #define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table)
1713 #define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table)
1714 #define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table)
1715 #define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table)
1716 #define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table)
1717 #define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table)
1718 #define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table)
1719 #define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table)
1720 #define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table)
1721 #define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table)
1722 #define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table)
1723 #define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table)
1724 #define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table)
1725 #define DIOCOSFPFLUSH _IO('D', 78)
1726 #define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl)
1727 #define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl)
1728 #define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans)
1729 #define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans)
1730 #define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans)
1731 #define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes)
1732 #define DIOCCLRSRCNODES _IO('D', 85)
1733 #define DIOCSETHOSTID _IOWR('D', 86, u_int32_t)
1734 #define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface)
1735 #define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface)
1736 #define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface)
1737 #define DIOCKILLSRCNODES _IOWR('D', 91, struct pfioc_src_node_kill)
1738 #define DIOCKEEPCOUNTERS _IOWR('D', 92, struct pfioc_nv)
1739 #define DIOCGETSTATESV2 _IOWR('D', 93, struct pfioc_states_v2)
1740 #define DIOCGETSYNCOOKIES _IOWR('D', 94, struct pfioc_nv)
1741 #define DIOCSETSYNCOOKIES _IOWR('D', 95, struct pfioc_nv)
1742
1743 struct pf_ifspeed_v0 {
1744 char ifname[IFNAMSIZ];
1745 u_int32_t baudrate;
1746 };
1747
1748 struct pf_ifspeed_v1 {
1749 char ifname[IFNAMSIZ];
1750 u_int32_t baudrate32;
1751 /* layout identical to struct pf_ifspeed_v0 up to this point */
1752 u_int64_t baudrate;
1753 };
1754
1755 /* Latest version of struct pf_ifspeed_vX */
1756 #define PF_IFSPEED_VERSION 1
1757
1758 #define DIOCGIFSPEEDV0 _IOWR('D', 92, struct pf_ifspeed_v0)
1759 #define DIOCGIFSPEEDV1 _IOWR('D', 92, struct pf_ifspeed_v1)
1760
1761 /*
1762 * Compatibility and convenience macros
1763 */
1764 #ifndef _KERNEL
1765 #ifdef PFIOC_USE_LATEST
1766 /*
1767 * Maintaining in-tree consumers of the ioctl interface is easier when that
1768 * code can be written in terms old names that refer to the latest interface
1769 * version as that reduces the required changes in the consumers to those
1770 * that are functionally necessary to accommodate a new interface version.
1771 */
1772 #define pfioc_altq __CONCAT(pfioc_altq_v, PFIOC_ALTQ_VERSION)
1773 #define pfioc_qstats __CONCAT(pfioc_qstats_v, PFIOC_QSTATS_VERSION)
1774 #define pf_ifspeed __CONCAT(pf_ifspeed_v, PF_IFSPEED_VERSION)
1775
1776 #define DIOCADDALTQ __CONCAT(DIOCADDALTQV, PFIOC_ALTQ_VERSION)
1777 #define DIOCGETALTQS __CONCAT(DIOCGETALTQSV, PFIOC_ALTQ_VERSION)
1778 #define DIOCGETALTQ __CONCAT(DIOCGETALTQV, PFIOC_ALTQ_VERSION)
1779 #define DIOCCHANGEALTQ __CONCAT(DIOCCHANGEALTQV, PFIOC_ALTQ_VERSION)
1780 #define DIOCGETQSTATS __CONCAT(DIOCGETQSTATSV, PFIOC_QSTATS_VERSION)
1781 #define DIOCGIFSPEED __CONCAT(DIOCGIFSPEEDV, PF_IFSPEED_VERSION)
1782 #else
1783 /*
1784 * When building out-of-tree code that is written for the old interface,
1785 * such as may exist in ports for example, resolve the old struct tags and
1786 * ioctl command names to the v0 versions.
1787 */
1788 #define pfioc_altq __CONCAT(pfioc_altq_v, 0)
1789 #define pfioc_qstats __CONCAT(pfioc_qstats_v, 0)
1790 #define pf_ifspeed __CONCAT(pf_ifspeed_v, 0)
1791
1792 #define DIOCADDALTQ __CONCAT(DIOCADDALTQV, 0)
1793 #define DIOCGETALTQS __CONCAT(DIOCGETALTQSV, 0)
1794 #define DIOCGETALTQ __CONCAT(DIOCGETALTQV, 0)
1795 #define DIOCCHANGEALTQ __CONCAT(DIOCCHANGEALTQV, 0)
1796 #define DIOCGETQSTATS __CONCAT(DIOCGETQSTATSV, 0)
1797 #define DIOCGIFSPEED __CONCAT(DIOCGIFSPEEDV, 0)
1798 #endif /* PFIOC_USE_LATEST */
1799 #endif /* _KERNEL */
1800
1801 #ifdef _KERNEL
1802 LIST_HEAD(pf_ksrc_node_list, pf_ksrc_node);
1803 struct pf_srchash {
1804 struct pf_ksrc_node_list nodes;
1805 struct mtx lock;
1806 };
1807
1808 struct pf_keyhash {
1809 LIST_HEAD(, pf_state_key) keys;
1810 struct mtx lock;
1811 };
1812
1813 struct pf_idhash {
1814 LIST_HEAD(, pf_kstate) states;
1815 struct mtx lock;
1816 };
1817
1818 extern u_long pf_ioctl_maxcount;
1819 extern u_long pf_hashmask;
1820 extern u_long pf_srchashmask;
1821 #define PF_HASHSIZ (131072)
1822 #define PF_SRCHASHSIZ (PF_HASHSIZ/4)
1823 VNET_DECLARE(struct pf_keyhash *, pf_keyhash);
1824 VNET_DECLARE(struct pf_idhash *, pf_idhash);
1825 #define V_pf_keyhash VNET(pf_keyhash)
1826 #define V_pf_idhash VNET(pf_idhash)
1827 VNET_DECLARE(struct pf_srchash *, pf_srchash);
1828 #define V_pf_srchash VNET(pf_srchash)
1829
1830 #define PF_IDHASH(s) (be64toh((s)->id) % (pf_hashmask + 1))
1831
1832 VNET_DECLARE(void *, pf_swi_cookie);
1833 #define V_pf_swi_cookie VNET(pf_swi_cookie)
1834 VNET_DECLARE(struct intr_event *, pf_swi_ie);
1835 #define V_pf_swi_ie VNET(pf_swi_ie)
1836
1837 VNET_DECLARE(uint64_t, pf_stateid[MAXCPU]);
1838 #define V_pf_stateid VNET(pf_stateid)
1839
1840 TAILQ_HEAD(pf_altqqueue, pf_altq);
1841 VNET_DECLARE(struct pf_altqqueue, pf_altqs[4]);
1842 #define V_pf_altqs VNET(pf_altqs)
1843 VNET_DECLARE(struct pf_kpalist, pf_pabuf);
1844 #define V_pf_pabuf VNET(pf_pabuf)
1845
1846 VNET_DECLARE(u_int32_t, ticket_altqs_active);
1847 #define V_ticket_altqs_active VNET(ticket_altqs_active)
1848 VNET_DECLARE(u_int32_t, ticket_altqs_inactive);
1849 #define V_ticket_altqs_inactive VNET(ticket_altqs_inactive)
1850 VNET_DECLARE(int, altqs_inactive_open);
1851 #define V_altqs_inactive_open VNET(altqs_inactive_open)
1852 VNET_DECLARE(u_int32_t, ticket_pabuf);
1853 #define V_ticket_pabuf VNET(ticket_pabuf)
1854 VNET_DECLARE(struct pf_altqqueue *, pf_altqs_active);
1855 #define V_pf_altqs_active VNET(pf_altqs_active)
1856 VNET_DECLARE(struct pf_altqqueue *, pf_altq_ifs_active);
1857 #define V_pf_altq_ifs_active VNET(pf_altq_ifs_active)
1858 VNET_DECLARE(struct pf_altqqueue *, pf_altqs_inactive);
1859 #define V_pf_altqs_inactive VNET(pf_altqs_inactive)
1860 VNET_DECLARE(struct pf_altqqueue *, pf_altq_ifs_inactive);
1861 #define V_pf_altq_ifs_inactive VNET(pf_altq_ifs_inactive)
1862
1863 VNET_DECLARE(struct pf_krulequeue, pf_unlinked_rules);
1864 #define V_pf_unlinked_rules VNET(pf_unlinked_rules)
1865
1866 #ifdef PF_WANT_32_TO_64_COUNTER
1867 LIST_HEAD(allkiflist_head, pfi_kkif);
1868 VNET_DECLARE(struct allkiflist_head, pf_allkiflist);
1869 #define V_pf_allkiflist VNET(pf_allkiflist)
1870 VNET_DECLARE(size_t, pf_allkifcount);
1871 #define V_pf_allkifcount VNET(pf_allkifcount)
1872 VNET_DECLARE(struct pfi_kkif *, pf_kifmarker);
1873 #define V_pf_kifmarker VNET(pf_kifmarker)
1874
1875 LIST_HEAD(allrulelist_head, pf_krule);
1876 VNET_DECLARE(struct allrulelist_head, pf_allrulelist);
1877 #define V_pf_allrulelist VNET(pf_allrulelist)
1878 VNET_DECLARE(size_t, pf_allrulecount);
1879 #define V_pf_allrulecount VNET(pf_allrulecount)
1880 VNET_DECLARE(struct pf_krule *, pf_rulemarker);
1881 #define V_pf_rulemarker VNET(pf_rulemarker)
1882 #endif
1883
1884 void pf_initialize(void);
1885 void pf_mtag_initialize(void);
1886 void pf_mtag_cleanup(void);
1887 void pf_cleanup(void);
1888
1889 struct pf_mtag *pf_get_mtag(struct mbuf *);
1890
1891 extern void pf_calc_skip_steps(struct pf_krulequeue *);
1892 #ifdef ALTQ
1893 extern void pf_altq_ifnet_event(struct ifnet *, int);
1894 #endif
1895 VNET_DECLARE(uma_zone_t, pf_state_z);
1896 #define V_pf_state_z VNET(pf_state_z)
1897 VNET_DECLARE(uma_zone_t, pf_state_key_z);
1898 #define V_pf_state_key_z VNET(pf_state_key_z)
1899 VNET_DECLARE(uma_zone_t, pf_state_scrub_z);
1900 #define V_pf_state_scrub_z VNET(pf_state_scrub_z)
1901
1902 extern void pf_purge_thread(void *);
1903 extern void pf_unload_vnet_purge(void);
1904 extern void pf_intr(void *);
1905 extern void pf_purge_expired_src_nodes(void);
1906
1907 extern int pf_unlink_state(struct pf_kstate *, u_int);
1908 #define PF_ENTER_LOCKED 0x00000001
1909 #define PF_RETURN_LOCKED 0x00000002
1910 extern int pf_state_insert(struct pfi_kkif *,
1911 struct pfi_kkif *,
1912 struct pf_state_key *,
1913 struct pf_state_key *,
1914 struct pf_kstate *);
1915 extern struct pf_kstate *pf_alloc_state(int);
1916 extern void pf_free_state(struct pf_kstate *);
1917
1918 static __inline void
pf_ref_state(struct pf_kstate * s)1919 pf_ref_state(struct pf_kstate *s)
1920 {
1921
1922 refcount_acquire(&s->refs);
1923 }
1924
1925 static __inline int
pf_release_state(struct pf_kstate * s)1926 pf_release_state(struct pf_kstate *s)
1927 {
1928
1929 if (refcount_release(&s->refs)) {
1930 pf_free_state(s);
1931 return (1);
1932 } else
1933 return (0);
1934 }
1935
1936 static __inline int
pf_release_staten(struct pf_kstate * s,u_int n)1937 pf_release_staten(struct pf_kstate *s, u_int n)
1938 {
1939
1940 if (refcount_releasen(&s->refs, n)) {
1941 pf_free_state(s);
1942 return (1);
1943 } else
1944 return (0);
1945 }
1946
1947 extern struct pf_kstate *pf_find_state_byid(uint64_t, uint32_t);
1948 extern struct pf_kstate *pf_find_state_all(struct pf_state_key_cmp *,
1949 u_int, int *);
1950 extern bool pf_find_state_all_exists(struct pf_state_key_cmp *,
1951 u_int);
1952 extern struct pf_ksrc_node *pf_find_src_node(struct pf_addr *,
1953 struct pf_krule *, sa_family_t, int);
1954 extern void pf_unlink_src_node(struct pf_ksrc_node *);
1955 extern u_int pf_free_src_nodes(struct pf_ksrc_node_list *);
1956 extern void pf_print_state(struct pf_kstate *);
1957 extern void pf_print_flags(u_int8_t);
1958 extern u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t,
1959 u_int8_t);
1960 extern u_int16_t pf_proto_cksum_fixup(struct mbuf *, u_int16_t,
1961 u_int16_t, u_int16_t, u_int8_t);
1962
1963 VNET_DECLARE(struct ifnet *, sync_ifp);
1964 #define V_sync_ifp VNET(sync_ifp);
1965 VNET_DECLARE(struct pf_krule, pf_default_rule);
1966 #define V_pf_default_rule VNET(pf_default_rule)
1967 extern void pf_addrcpy(struct pf_addr *, struct pf_addr *,
1968 u_int8_t);
1969 void pf_free_rule(struct pf_krule *);
1970
1971 #ifdef INET
1972 int pf_test(int, int, struct ifnet *, struct mbuf **, struct inpcb *);
1973 int pf_normalize_ip(struct mbuf **, int, struct pfi_kkif *, u_short *,
1974 struct pf_pdesc *);
1975 #endif /* INET */
1976
1977 #ifdef INET6
1978 int pf_test6(int, int, struct ifnet *, struct mbuf **, struct inpcb *);
1979 int pf_normalize_ip6(struct mbuf **, int, struct pfi_kkif *, u_short *,
1980 struct pf_pdesc *);
1981 void pf_poolmask(struct pf_addr *, struct pf_addr*,
1982 struct pf_addr *, struct pf_addr *, u_int8_t);
1983 void pf_addr_inc(struct pf_addr *, sa_family_t);
1984 int pf_refragment6(struct ifnet *, struct mbuf **, struct m_tag *);
1985 #endif /* INET6 */
1986
1987 u_int32_t pf_new_isn(struct pf_kstate *);
1988 void *pf_pull_hdr(struct mbuf *, int, void *, int, u_short *, u_short *,
1989 sa_family_t);
1990 void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t);
1991 void pf_change_proto_a(struct mbuf *, void *, u_int16_t *, u_int32_t,
1992 u_int8_t);
1993 void pf_change_tcp_a(struct mbuf *, void *, u_int16_t *, u_int32_t);
1994 void pf_patch_16_unaligned(struct mbuf *, u_int16_t *, void *, u_int16_t,
1995 bool, u_int8_t);
1996 void pf_patch_32_unaligned(struct mbuf *, u_int16_t *, void *, u_int32_t,
1997 bool, u_int8_t);
1998 void pf_send_deferred_syn(struct pf_kstate *);
1999 int pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *,
2000 struct pf_addr *, sa_family_t);
2001 int pf_match_addr_range(struct pf_addr *, struct pf_addr *,
2002 struct pf_addr *, sa_family_t);
2003 int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t);
2004
2005 void pf_normalize_init(void);
2006 void pf_normalize_cleanup(void);
2007 int pf_normalize_tcp(int, struct pfi_kkif *, struct mbuf *, int, int, void *,
2008 struct pf_pdesc *);
2009 void pf_normalize_tcp_cleanup(struct pf_kstate *);
2010 int pf_normalize_tcp_init(struct mbuf *, int, struct pf_pdesc *,
2011 struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *);
2012 int pf_normalize_tcp_stateful(struct mbuf *, int, struct pf_pdesc *,
2013 u_short *, struct tcphdr *, struct pf_kstate *,
2014 struct pf_state_peer *, struct pf_state_peer *, int *);
2015 u_int32_t
2016 pf_state_expires(const struct pf_kstate *);
2017 void pf_purge_expired_fragments(void);
2018 void pf_purge_fragments(uint32_t);
2019 int pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kkif *,
2020 int);
2021 int pf_socket_lookup(int, struct pf_pdesc *, struct mbuf *);
2022 struct pf_state_key *pf_alloc_state_key(int);
2023 void pfr_initialize(void);
2024 void pfr_cleanup(void);
2025 int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t);
2026 void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t,
2027 u_int64_t, int, int, int);
2028 int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, sa_family_t);
2029 void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *);
2030 struct pfr_ktable *
2031 pfr_attach_table(struct pf_kruleset *, char *);
2032 void pfr_detach_table(struct pfr_ktable *);
2033 int pfr_clr_tables(struct pfr_table *, int *, int);
2034 int pfr_add_tables(struct pfr_table *, int, int *, int);
2035 int pfr_del_tables(struct pfr_table *, int, int *, int);
2036 int pfr_table_count(struct pfr_table *, int);
2037 int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int);
2038 int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int);
2039 int pfr_clr_tstats(struct pfr_table *, int, int *, int);
2040 int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int);
2041 int pfr_clr_addrs(struct pfr_table *, int *, int);
2042 int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *, long);
2043 int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
2044 int);
2045 int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
2046 int);
2047 int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
2048 int *, int *, int *, int, u_int32_t);
2049 int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int);
2050 int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int);
2051 int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *,
2052 int);
2053 int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
2054 int);
2055 int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int);
2056 int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int);
2057 int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int);
2058 int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *,
2059 int *, u_int32_t, int);
2060
2061 MALLOC_DECLARE(PFI_MTYPE);
2062 VNET_DECLARE(struct pfi_kkif *, pfi_all);
2063 #define V_pfi_all VNET(pfi_all)
2064
2065 void pfi_initialize(void);
2066 void pfi_initialize_vnet(void);
2067 void pfi_cleanup(void);
2068 void pfi_cleanup_vnet(void);
2069 void pfi_kkif_ref(struct pfi_kkif *);
2070 void pfi_kkif_unref(struct pfi_kkif *);
2071 struct pfi_kkif *pfi_kkif_find(const char *);
2072 struct pfi_kkif *pfi_kkif_attach(struct pfi_kkif *, const char *);
2073 int pfi_kkif_match(struct pfi_kkif *, struct pfi_kkif *);
2074 void pfi_kkif_purge(void);
2075 int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *,
2076 sa_family_t);
2077 int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t);
2078 void pfi_dynaddr_remove(struct pfi_dynaddr *);
2079 void pfi_dynaddr_copyout(struct pf_addr_wrap *);
2080 void pfi_update_status(const char *, struct pf_status *);
2081 void pfi_get_ifaces(const char *, struct pfi_kif *, int *);
2082 int pfi_set_flags(const char *, int);
2083 int pfi_clear_flags(const char *, int);
2084
2085 int pf_match_tag(struct mbuf *, struct pf_krule *, int *, int);
2086 int pf_tag_packet(struct mbuf *, struct pf_pdesc *, int);
2087 int pf_addr_cmp(struct pf_addr *, struct pf_addr *,
2088 sa_family_t);
2089
2090 u_int16_t pf_get_mss(struct mbuf *, int, u_int16_t, sa_family_t);
2091 u_int8_t pf_get_wscale(struct mbuf *, int, u_int16_t, sa_family_t);
2092 struct mbuf *pf_build_tcp(const struct pf_krule *, sa_family_t,
2093 const struct pf_addr *, const struct pf_addr *,
2094 u_int16_t, u_int16_t, u_int32_t, u_int32_t,
2095 u_int8_t, u_int16_t, u_int16_t, u_int8_t, int,
2096 u_int16_t);
2097 void pf_send_tcp(const struct pf_krule *, sa_family_t,
2098 const struct pf_addr *, const struct pf_addr *,
2099 u_int16_t, u_int16_t, u_int32_t, u_int32_t,
2100 u_int8_t, u_int16_t, u_int16_t, u_int8_t, int,
2101 u_int16_t);
2102
2103 void pf_syncookies_init(void);
2104 void pf_syncookies_cleanup(void);
2105 int pf_get_syncookies(struct pfioc_nv *);
2106 int pf_set_syncookies(struct pfioc_nv *);
2107 int pf_synflood_check(struct pf_pdesc *);
2108 void pf_syncookie_send(struct mbuf *m, int off,
2109 struct pf_pdesc *);
2110 u_int8_t pf_syncookie_validate(struct pf_pdesc *);
2111 struct mbuf * pf_syncookie_recreate_syn(uint8_t, int,
2112 struct pf_pdesc *);
2113
2114 VNET_DECLARE(struct pf_kstatus, pf_status);
2115 #define V_pf_status VNET(pf_status)
2116
2117 struct pf_limit {
2118 uma_zone_t zone;
2119 u_int limit;
2120 };
2121 VNET_DECLARE(struct pf_limit, pf_limits[PF_LIMIT_MAX]);
2122 #define V_pf_limits VNET(pf_limits)
2123
2124 #endif /* _KERNEL */
2125
2126 #ifdef _KERNEL
2127 VNET_DECLARE(struct pf_kanchor_global, pf_anchors);
2128 #define V_pf_anchors VNET(pf_anchors)
2129 VNET_DECLARE(struct pf_kanchor, pf_main_anchor);
2130 #define V_pf_main_anchor VNET(pf_main_anchor)
2131 #define pf_main_ruleset V_pf_main_anchor.ruleset
2132
2133 void pf_init_kruleset(struct pf_kruleset *);
2134 int pf_kanchor_setup(struct pf_krule *,
2135 const struct pf_kruleset *, const char *);
2136 int pf_kanchor_nvcopyout(const struct pf_kruleset *,
2137 const struct pf_krule *, nvlist_t *);
2138 int pf_kanchor_copyout(const struct pf_kruleset *,
2139 const struct pf_krule *, struct pfioc_rule *);
2140 void pf_kanchor_remove(struct pf_krule *);
2141 void pf_remove_if_empty_kruleset(struct pf_kruleset *);
2142 struct pf_kruleset *pf_find_kruleset(const char *);
2143 struct pf_kruleset *pf_find_or_create_kruleset(const char *);
2144 void pf_rs_initialize(void);
2145
2146 struct pf_krule *pf_krule_alloc(void);
2147 void pf_krule_free(struct pf_krule *);
2148 #endif
2149
2150 /* The fingerprint functions can be linked into userland programs (tcpdump) */
2151 int pf_osfp_add(struct pf_osfp_ioctl *);
2152 #ifdef _KERNEL
2153 struct pf_osfp_enlist *
2154 pf_osfp_fingerprint(struct pf_pdesc *, struct mbuf *, int,
2155 const struct tcphdr *);
2156 #endif /* _KERNEL */
2157 void pf_osfp_flush(void);
2158 int pf_osfp_get(struct pf_osfp_ioctl *);
2159 int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t);
2160
2161 #ifdef _KERNEL
2162 void pf_print_host(struct pf_addr *, u_int16_t, u_int8_t);
2163
2164 void pf_step_into_anchor(struct pf_kanchor_stackframe *, int *,
2165 struct pf_kruleset **, int, struct pf_krule **,
2166 struct pf_krule **, int *);
2167 int pf_step_out_of_anchor(struct pf_kanchor_stackframe *, int *,
2168 struct pf_kruleset **, int, struct pf_krule **,
2169 struct pf_krule **, int *);
2170
2171 int pf_map_addr(u_int8_t, struct pf_krule *,
2172 struct pf_addr *, struct pf_addr *,
2173 struct pf_addr *, struct pf_ksrc_node **);
2174 struct pf_krule *pf_get_translation(struct pf_pdesc *, struct mbuf *,
2175 int, int, struct pfi_kkif *, struct pf_ksrc_node **,
2176 struct pf_state_key **, struct pf_state_key **,
2177 struct pf_addr *, struct pf_addr *,
2178 uint16_t, uint16_t, struct pf_kanchor_stackframe *);
2179
2180 struct pf_state_key *pf_state_key_setup(struct pf_pdesc *, struct pf_addr *,
2181 struct pf_addr *, u_int16_t, u_int16_t);
2182 struct pf_state_key *pf_state_key_clone(struct pf_state_key *);
2183
2184 struct pfi_kkif *pf_kkif_create(int);
2185 void pf_kkif_free(struct pfi_kkif *);
2186 void pf_kkif_zero(struct pfi_kkif *);
2187 #endif /* _KERNEL */
2188
2189 #endif /* _NET_PFVAR_H_ */
2190