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/malloc.h>
42 #include <sys/nv.h>
43 #include <sys/refcount.h>
44 #include <sys/sysctl.h>
45 #include <sys/smp.h>
46 #include <sys/lock.h>
47 #include <sys/rmlock.h>
48 #include <sys/tree.h>
49 #include <sys/seqc.h>
50 #include <vm/uma.h>
51
52 #include <net/radix.h>
53 #include <netinet/in.h>
54 #ifdef _KERNEL
55 #include <netinet/ip.h>
56 #include <netinet/tcp.h>
57 #include <netinet/udp.h>
58 #include <netinet/sctp.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 #define PF_UNLNKDRULES_ASSERT() mtx_assert(&pf_unlnkdrules_mtx, MA_OWNED)
353
354 extern struct rmlock pf_rules_lock;
355 #define PF_RULES_RLOCK_TRACKER struct rm_priotracker _pf_rules_tracker
356 #define PF_RULES_RLOCK() rm_rlock(&pf_rules_lock, &_pf_rules_tracker)
357 #define PF_RULES_RUNLOCK() rm_runlock(&pf_rules_lock, &_pf_rules_tracker)
358 #define PF_RULES_WLOCK() rm_wlock(&pf_rules_lock)
359 #define PF_RULES_WUNLOCK() rm_wunlock(&pf_rules_lock)
360 #define PF_RULES_WOWNED() rm_wowned(&pf_rules_lock)
361 #define PF_RULES_ASSERT() rm_assert(&pf_rules_lock, RA_LOCKED)
362 #define PF_RULES_RASSERT() rm_assert(&pf_rules_lock, RA_RLOCKED)
363 #define PF_RULES_WASSERT() rm_assert(&pf_rules_lock, RA_WLOCKED)
364
365 extern struct mtx_padalign pf_table_stats_lock;
366 #define PF_TABLE_STATS_LOCK() mtx_lock(&pf_table_stats_lock)
367 #define PF_TABLE_STATS_UNLOCK() mtx_unlock(&pf_table_stats_lock)
368 #define PF_TABLE_STATS_OWNED() mtx_owned(&pf_table_stats_lock)
369 #define PF_TABLE_STATS_ASSERT() mtx_assert(&pf_rules_lock, MA_OWNED)
370
371 extern struct sx pf_end_lock;
372
373 #define PF_MODVER 1
374 #define PFLOG_MODVER 1
375 #define PFSYNC_MODVER 1
376
377 #define PFLOG_MINVER 1
378 #define PFLOG_PREFVER PFLOG_MODVER
379 #define PFLOG_MAXVER 1
380 #define PFSYNC_MINVER 1
381 #define PFSYNC_PREFVER PFSYNC_MODVER
382 #define PFSYNC_MAXVER 1
383
384 #ifdef INET
385 #ifndef INET6
386 #define PF_INET_ONLY
387 #endif /* ! INET6 */
388 #endif /* INET */
389
390 #ifdef INET6
391 #ifndef INET
392 #define PF_INET6_ONLY
393 #endif /* ! INET */
394 #endif /* INET6 */
395
396 #ifdef INET
397 #ifdef INET6
398 #define PF_INET_INET6
399 #endif /* INET6 */
400 #endif /* INET */
401
402 #else
403
404 #define PF_INET_INET6
405
406 #endif /* _KERNEL */
407
408 /* Both IPv4 and IPv6 */
409 #ifdef PF_INET_INET6
410
411 #define PF_AEQ(a, b, c) \
412 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \
413 (c == AF_INET6 && (a)->addr32[3] == (b)->addr32[3] && \
414 (a)->addr32[2] == (b)->addr32[2] && \
415 (a)->addr32[1] == (b)->addr32[1] && \
416 (a)->addr32[0] == (b)->addr32[0])) \
417
418 #define PF_ANEQ(a, b, c) \
419 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \
420 (c == AF_INET6 && ((a)->addr32[0] != (b)->addr32[0] || \
421 (a)->addr32[1] != (b)->addr32[1] || \
422 (a)->addr32[2] != (b)->addr32[2] || \
423 (a)->addr32[3] != (b)->addr32[3]))) \
424
425 #define PF_AZERO(a, c) \
426 ((c == AF_INET && !(a)->addr32[0]) || \
427 (c == AF_INET6 && !(a)->addr32[0] && !(a)->addr32[1] && \
428 !(a)->addr32[2] && !(a)->addr32[3] )) \
429
430 #define PF_MATCHA(n, a, m, b, f) \
431 pf_match_addr(n, a, m, b, f)
432
433 #define PF_ACPY(a, b, f) \
434 pf_addrcpy(a, b, f)
435
436 #define PF_AINC(a, f) \
437 pf_addr_inc(a, f)
438
439 #define PF_POOLMASK(a, b, c, d, f) \
440 pf_poolmask(a, b, c, d, f)
441
442 #else
443
444 /* Just IPv6 */
445
446 #ifdef PF_INET6_ONLY
447
448 #define PF_AEQ(a, b, c) \
449 ((a)->addr32[3] == (b)->addr32[3] && \
450 (a)->addr32[2] == (b)->addr32[2] && \
451 (a)->addr32[1] == (b)->addr32[1] && \
452 (a)->addr32[0] == (b)->addr32[0]) \
453
454 #define PF_ANEQ(a, b, c) \
455 ((a)->addr32[3] != (b)->addr32[3] || \
456 (a)->addr32[2] != (b)->addr32[2] || \
457 (a)->addr32[1] != (b)->addr32[1] || \
458 (a)->addr32[0] != (b)->addr32[0]) \
459
460 #define PF_AZERO(a, c) \
461 (!(a)->addr32[0] && \
462 !(a)->addr32[1] && \
463 !(a)->addr32[2] && \
464 !(a)->addr32[3] ) \
465
466 #define PF_MATCHA(n, a, m, b, f) \
467 pf_match_addr(n, a, m, b, f)
468
469 #define PF_ACPY(a, b, f) \
470 pf_addrcpy(a, b, f)
471
472 #define PF_AINC(a, f) \
473 pf_addr_inc(a, f)
474
475 #define PF_POOLMASK(a, b, c, d, f) \
476 pf_poolmask(a, b, c, d, f)
477
478 #else
479
480 /* Just IPv4 */
481 #ifdef PF_INET_ONLY
482
483 #define PF_AEQ(a, b, c) \
484 ((a)->addr32[0] == (b)->addr32[0])
485
486 #define PF_ANEQ(a, b, c) \
487 ((a)->addr32[0] != (b)->addr32[0])
488
489 #define PF_AZERO(a, c) \
490 (!(a)->addr32[0])
491
492 #define PF_MATCHA(n, a, m, b, f) \
493 pf_match_addr(n, a, m, b, f)
494
495 #define PF_ACPY(a, b, f) \
496 (a)->v4.s_addr = (b)->v4.s_addr
497
498 #define PF_AINC(a, f) \
499 do { \
500 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \
501 } while (0)
502
503 #define PF_POOLMASK(a, b, c, d, f) \
504 do { \
505 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \
506 (((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \
507 } while (0)
508
509 #endif /* PF_INET_ONLY */
510 #endif /* PF_INET6_ONLY */
511 #endif /* PF_INET_INET6 */
512
513 /*
514 * XXX callers not FIB-aware in our version of pf yet.
515 * OpenBSD fixed it later it seems, 2010/05/07 13:33:16 claudio.
516 */
517 #define PF_MISMATCHAW(aw, x, af, neg, ifp, rtid) \
518 ( \
519 (((aw)->type == PF_ADDR_NOROUTE && \
520 pf_routable((x), (af), NULL, (rtid))) || \
521 (((aw)->type == PF_ADDR_URPFFAILED && (ifp) != NULL && \
522 pf_routable((x), (af), (ifp), (rtid))) || \
523 ((aw)->type == PF_ADDR_TABLE && \
524 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \
525 ((aw)->type == PF_ADDR_DYNIFTL && \
526 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \
527 ((aw)->type == PF_ADDR_RANGE && \
528 !pf_match_addr_range(&(aw)->v.a.addr, \
529 &(aw)->v.a.mask, (x), (af))) || \
530 ((aw)->type == PF_ADDR_ADDRMASK && \
531 !PF_AZERO(&(aw)->v.a.mask, (af)) && \
532 !PF_MATCHA(0, &(aw)->v.a.addr, \
533 &(aw)->v.a.mask, (x), (af))))) != \
534 (neg) \
535 )
536
537 #define PF_ALGNMNT(off) (((off) % 2) == 0)
538
539 #ifdef _KERNEL
540
541 struct pf_kpooladdr {
542 struct pf_addr_wrap addr;
543 TAILQ_ENTRY(pf_kpooladdr) entries;
544 char ifname[IFNAMSIZ];
545 struct pfi_kkif *kif;
546 };
547
548 TAILQ_HEAD(pf_kpalist, pf_kpooladdr);
549
550 struct pf_kpool {
551 struct mtx mtx;
552 struct pf_kpalist list;
553 struct pf_kpooladdr *cur;
554 struct pf_poolhashkey key;
555 struct pf_addr counter;
556 struct pf_mape_portset mape;
557 int tblidx;
558 u_int16_t proxy_port[2];
559 u_int8_t opts;
560 };
561
562 struct pf_rule_actions {
563 uint16_t qid;
564 uint16_t pqid;
565 };
566
567 union pf_krule_ptr {
568 struct pf_krule *ptr;
569 u_int32_t nr;
570 };
571
572 struct pf_krule {
573 struct pf_rule_addr src;
574 struct pf_rule_addr dst;
575 union pf_krule_ptr skip[PF_SKIP_COUNT];
576 char label[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE];
577 uint32_t ridentifier;
578 char ifname[IFNAMSIZ];
579 char qname[PF_QNAME_SIZE];
580 char pqname[PF_QNAME_SIZE];
581 char tagname[PF_TAG_NAME_SIZE];
582 char match_tagname[PF_TAG_NAME_SIZE];
583
584 char overload_tblname[PF_TABLE_NAME_SIZE];
585
586 TAILQ_ENTRY(pf_krule) entries;
587 struct pf_kpool rpool;
588
589 struct pf_counter_u64 evaluations;
590 struct pf_counter_u64 packets[2];
591 struct pf_counter_u64 bytes[2];
592
593 struct pfi_kkif *kif;
594 struct pf_kanchor *anchor;
595 struct pfr_ktable *overload_tbl;
596
597 pf_osfp_t os_fingerprint;
598
599 int rtableid;
600 u_int32_t timeout[PFTM_MAX];
601 u_int32_t max_states;
602 u_int32_t max_src_nodes;
603 u_int32_t max_src_states;
604 u_int32_t max_src_conn;
605 struct {
606 u_int32_t limit;
607 u_int32_t seconds;
608 } max_src_conn_rate;
609 u_int16_t qid;
610 u_int16_t pqid;
611 u_int32_t nr;
612 u_int32_t prob;
613 uid_t cuid;
614 pid_t cpid;
615
616 counter_u64_t states_cur;
617 counter_u64_t states_tot;
618 counter_u64_t src_nodes;
619
620 u_int16_t return_icmp;
621 u_int16_t return_icmp6;
622 u_int16_t max_mss;
623 u_int16_t tag;
624 u_int16_t match_tag;
625 u_int16_t scrub_flags;
626
627 struct pf_rule_uid uid;
628 struct pf_rule_gid gid;
629
630 u_int32_t rule_flag;
631 uint32_t rule_ref;
632 u_int8_t action;
633 u_int8_t direction;
634 u_int8_t log;
635 u_int8_t logif;
636 u_int8_t quick;
637 u_int8_t ifnot;
638 u_int8_t match_tag_not;
639 u_int8_t natpass;
640
641 u_int8_t keep_state;
642 sa_family_t af;
643 u_int8_t proto;
644 u_int8_t type;
645 u_int8_t code;
646 u_int8_t flags;
647 u_int8_t flagset;
648 u_int8_t min_ttl;
649 u_int8_t allow_opts;
650 u_int8_t rt;
651 u_int8_t return_ttl;
652 u_int8_t tos;
653 u_int8_t set_tos;
654 u_int8_t anchor_relative;
655 u_int8_t anchor_wildcard;
656
657 u_int8_t flush;
658 u_int8_t prio;
659 u_int8_t set_prio[2];
660
661 struct {
662 struct pf_addr addr;
663 u_int16_t port;
664 } divert;
665
666 #ifdef PF_WANT_32_TO_64_COUNTER
667 LIST_ENTRY(pf_krule) allrulelist;
668 bool allrulelinked;
669 #endif
670 };
671
672 struct pf_ksrc_node {
673 LIST_ENTRY(pf_ksrc_node) entry;
674 struct pf_addr addr;
675 struct pf_addr raddr;
676 union pf_krule_ptr rule;
677 struct pfi_kkif *kif;
678 counter_u64_t bytes[2];
679 counter_u64_t packets[2];
680 u_int32_t states;
681 u_int32_t conn;
682 struct pf_threshold conn_rate;
683 u_int32_t creation;
684 u_int32_t expire;
685 sa_family_t af;
686 u_int8_t ruletype;
687 };
688 #endif
689
690 struct pf_state_scrub {
691 struct timeval pfss_last; /* time received last packet */
692 u_int32_t pfss_tsecr; /* last echoed timestamp */
693 u_int32_t pfss_tsval; /* largest timestamp */
694 u_int32_t pfss_tsval0; /* original timestamp */
695 u_int16_t pfss_flags;
696 #define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */
697 #define PFSS_PAWS 0x0010 /* stricter PAWS checks */
698 #define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */
699 #define PFSS_DATA_TS 0x0040 /* timestamp on data packets */
700 #define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */
701 u_int8_t pfss_ttl; /* stashed TTL */
702 u_int8_t pad;
703 union {
704 u_int32_t pfss_ts_mod; /* timestamp modulation */
705 u_int32_t pfss_v_tag; /* SCTP verification tag */
706 };
707 };
708
709 struct pf_state_host {
710 struct pf_addr addr;
711 u_int16_t port;
712 u_int16_t pad;
713 };
714
715 struct pf_state_peer {
716 struct pf_state_scrub *scrub; /* state is scrubbed */
717 u_int32_t seqlo; /* Max sequence number sent */
718 u_int32_t seqhi; /* Max the other end ACKd + win */
719 u_int32_t seqdiff; /* Sequence number modulator */
720 u_int16_t max_win; /* largest window (pre scaling) */
721 u_int16_t mss; /* Maximum segment size option */
722 u_int8_t state; /* active state level */
723 u_int8_t wscale; /* window scaling factor */
724 u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */
725 u_int8_t pad[1];
726 };
727
728 /* Keep synced with struct pf_state_key. */
729 struct pf_state_key_cmp {
730 struct pf_addr addr[2];
731 u_int16_t port[2];
732 sa_family_t af;
733 u_int8_t proto;
734 u_int8_t pad[2];
735 };
736
737 struct pf_state_key {
738 struct pf_addr addr[2];
739 u_int16_t port[2];
740 sa_family_t af;
741 u_int8_t proto;
742 u_int8_t pad[2];
743
744 LIST_ENTRY(pf_state_key) entry;
745 TAILQ_HEAD(, pf_kstate) states[2];
746 };
747
748 /* Keep synced with struct pf_kstate. */
749 struct pf_state_cmp {
750 u_int64_t id;
751 u_int32_t creatorid;
752 u_int8_t direction;
753 u_int8_t pad[3];
754 };
755
756 #define PFSTATE_ALLOWOPTS 0x01
757 #define PFSTATE_SLOPPY 0x02
758 /* was PFSTATE_PFLOW 0x04 */
759 #define PFSTATE_NOSYNC 0x08
760 #define PFSTATE_ACK 0x10
761 #define PFSTATE_SETPRIO 0x0200
762 #define PFSTATE_SETMASK (PFSTATE_SETPRIO)
763
764 struct pf_state_scrub_export {
765 uint16_t pfss_flags;
766 uint8_t pfss_ttl; /* stashed TTL */
767 #define PF_SCRUB_FLAG_VALID 0x01
768 uint8_t scrub_flag;
769 uint32_t pfss_ts_mod; /* timestamp modulation */
770 };
771
772 struct pf_state_key_export {
773 struct pf_addr addr[2];
774 uint16_t port[2];
775 };
776
777 struct pf_state_peer_export {
778 struct pf_state_scrub_export scrub; /* state is scrubbed */
779 uint32_t seqlo; /* Max sequence number sent */
780 uint32_t seqhi; /* Max the other end ACKd + win */
781 uint32_t seqdiff; /* Sequence number modulator */
782 uint16_t max_win; /* largest window (pre scaling) */
783 uint16_t mss; /* Maximum segment size option */
784 uint8_t state; /* active state level */
785 uint8_t wscale; /* window scaling factor */
786 uint8_t dummy[6];
787 };
788 _Static_assert(sizeof(struct pf_state_peer_export) == 32, "size incorrect");
789
790 struct pf_state_export {
791 uint64_t version;
792 #define PF_STATE_VERSION 20210706
793 uint64_t id;
794 char ifname[IFNAMSIZ];
795 char orig_ifname[IFNAMSIZ];
796 struct pf_state_key_export key[2];
797 struct pf_state_peer_export src;
798 struct pf_state_peer_export dst;
799 struct pf_addr rt_addr;
800 uint32_t rule;
801 uint32_t anchor;
802 uint32_t nat_rule;
803 uint32_t creation;
804 uint32_t expire;
805 uint32_t spare0;
806 uint64_t packets[2];
807 uint64_t bytes[2];
808 uint32_t creatorid;
809 uint32_t spare1;
810 sa_family_t af;
811 uint8_t proto;
812 uint8_t direction;
813 uint8_t log;
814 uint8_t state_flags;
815 uint8_t timeout;
816 uint8_t sync_flags;
817 uint8_t updates;
818
819 uint8_t spare[112];
820 };
821 _Static_assert(sizeof(struct pf_state_export) == 384, "size incorrect");
822
823 #ifdef _KERNEL
824 struct pf_kstate {
825 /*
826 * Area shared with pf_state_cmp
827 */
828 u_int64_t id;
829 u_int32_t creatorid;
830 u_int8_t direction;
831 u_int8_t pad[3];
832 /*
833 * end of the area
834 */
835
836 u_int8_t state_flags;
837 u_int8_t timeout;
838 u_int8_t sync_state; /* PFSYNC_S_x */
839 u_int8_t sync_updates; /* XXX */
840 u_int refs;
841 struct mtx *lock;
842 TAILQ_ENTRY(pf_kstate) sync_list;
843 TAILQ_ENTRY(pf_kstate) key_list[2];
844 LIST_ENTRY(pf_kstate) entry;
845 struct pf_state_peer src;
846 struct pf_state_peer dst;
847 union pf_krule_ptr rule;
848 union pf_krule_ptr anchor;
849 union pf_krule_ptr nat_rule;
850 struct pf_addr rt_addr;
851 struct pf_state_key *key[2]; /* addresses stack and wire */
852 struct pfi_kkif *kif;
853 struct pfi_kkif *orig_kif; /* The real kif, even if we're a floating state (i.e. if == V_pfi_all). */
854 struct pfi_kkif *rt_kif;
855 struct pf_ksrc_node *src_node;
856 struct pf_ksrc_node *nat_src_node;
857 u_int64_t packets[2];
858 u_int64_t bytes[2];
859 u_int32_t creation;
860 u_int32_t expire;
861 u_int32_t pfsync_time;
862 u_int16_t qid;
863 u_int16_t pqid;
864 u_int16_t tag;
865 u_int8_t log;
866 };
867
868 /*
869 * Size <= fits 13 objects per page on LP64. Try to not grow the struct beyond that.
870 */
871 _Static_assert(sizeof(struct pf_kstate) <= 312, "pf_kstate size crosses 312 bytes");
872 #endif
873
874 /*
875 * Unified state structures for pulling states out of the kernel
876 * used by pfsync(4) and the pf(4) ioctl.
877 */
878 struct pfsync_state_scrub {
879 u_int16_t pfss_flags;
880 u_int8_t pfss_ttl; /* stashed TTL */
881 #define PFSYNC_SCRUB_FLAG_VALID 0x01
882 u_int8_t scrub_flag;
883 u_int32_t pfss_ts_mod; /* timestamp modulation */
884 } __packed;
885
886 struct pfsync_state_peer {
887 struct pfsync_state_scrub scrub; /* state is scrubbed */
888 u_int32_t seqlo; /* Max sequence number sent */
889 u_int32_t seqhi; /* Max the other end ACKd + win */
890 u_int32_t seqdiff; /* Sequence number modulator */
891 u_int16_t max_win; /* largest window (pre scaling) */
892 u_int16_t mss; /* Maximum segment size option */
893 u_int8_t state; /* active state level */
894 u_int8_t wscale; /* window scaling factor */
895 u_int8_t pad[6];
896 } __packed;
897
898 struct pfsync_state_key {
899 struct pf_addr addr[2];
900 u_int16_t port[2];
901 };
902
903 struct pfsync_state {
904 u_int64_t id;
905 char ifname[IFNAMSIZ];
906 struct pfsync_state_key key[2];
907 struct pfsync_state_peer src;
908 struct pfsync_state_peer dst;
909 struct pf_addr rt_addr;
910 u_int32_t rule;
911 u_int32_t anchor;
912 u_int32_t nat_rule;
913 u_int32_t creation;
914 u_int32_t expire;
915 u_int32_t packets[2][2];
916 u_int32_t bytes[2][2];
917 u_int32_t creatorid;
918 sa_family_t af;
919 u_int8_t proto;
920 u_int8_t direction;
921 u_int8_t __spare[2];
922 u_int8_t log;
923 u_int8_t state_flags;
924 u_int8_t timeout;
925 u_int8_t sync_flags;
926 u_int8_t updates;
927 } __packed;
928
929 #ifdef _KERNEL
930 /* pfsync */
931 typedef int pfsync_state_import_t(struct pfsync_state *, u_int8_t);
932 typedef void pfsync_insert_state_t(struct pf_kstate *);
933 typedef void pfsync_update_state_t(struct pf_kstate *);
934 typedef void pfsync_delete_state_t(struct pf_kstate *);
935 typedef void pfsync_clear_states_t(u_int32_t, const char *);
936 typedef int pfsync_defer_t(struct pf_kstate *, struct mbuf *);
937 typedef void pfsync_detach_ifnet_t(struct ifnet *);
938
939 VNET_DECLARE(pfsync_state_import_t *, pfsync_state_import_ptr);
940 #define V_pfsync_state_import_ptr VNET(pfsync_state_import_ptr)
941 VNET_DECLARE(pfsync_insert_state_t *, pfsync_insert_state_ptr);
942 #define V_pfsync_insert_state_ptr VNET(pfsync_insert_state_ptr)
943 VNET_DECLARE(pfsync_update_state_t *, pfsync_update_state_ptr);
944 #define V_pfsync_update_state_ptr VNET(pfsync_update_state_ptr)
945 VNET_DECLARE(pfsync_delete_state_t *, pfsync_delete_state_ptr);
946 #define V_pfsync_delete_state_ptr VNET(pfsync_delete_state_ptr)
947 VNET_DECLARE(pfsync_clear_states_t *, pfsync_clear_states_ptr);
948 #define V_pfsync_clear_states_ptr VNET(pfsync_clear_states_ptr)
949 VNET_DECLARE(pfsync_defer_t *, pfsync_defer_ptr);
950 #define V_pfsync_defer_ptr VNET(pfsync_defer_ptr)
951 extern pfsync_detach_ifnet_t *pfsync_detach_ifnet_ptr;
952
953 void pfsync_state_export(struct pfsync_state *,
954 struct pf_kstate *);
955 void pf_state_export(struct pf_state_export *,
956 struct pf_kstate *);
957
958 /* pflog */
959 struct pf_kruleset;
960 struct pf_pdesc;
961 typedef int pflog_packet_t(struct pfi_kkif *, struct mbuf *, sa_family_t,
962 u_int8_t, u_int8_t, struct pf_krule *, struct pf_krule *,
963 struct pf_kruleset *, struct pf_pdesc *, int);
964 extern pflog_packet_t *pflog_packet_ptr;
965
966 #endif /* _KERNEL */
967
968 #define PFSYNC_FLAG_SRCNODE 0x04
969 #define PFSYNC_FLAG_NATSRCNODE 0x08
970
971 /* for copies to/from network byte order */
972 /* ioctl interface also uses network byte order */
973 #define pf_state_peer_hton(s,d) do { \
974 (d)->seqlo = htonl((s)->seqlo); \
975 (d)->seqhi = htonl((s)->seqhi); \
976 (d)->seqdiff = htonl((s)->seqdiff); \
977 (d)->max_win = htons((s)->max_win); \
978 (d)->mss = htons((s)->mss); \
979 (d)->state = (s)->state; \
980 (d)->wscale = (s)->wscale; \
981 if ((s)->scrub) { \
982 (d)->scrub.pfss_flags = \
983 htons((s)->scrub->pfss_flags & PFSS_TIMESTAMP); \
984 (d)->scrub.pfss_ttl = (s)->scrub->pfss_ttl; \
985 (d)->scrub.pfss_ts_mod = htonl((s)->scrub->pfss_ts_mod);\
986 (d)->scrub.scrub_flag = PFSYNC_SCRUB_FLAG_VALID; \
987 } \
988 } while (0)
989
990 #define pf_state_peer_ntoh(s,d) do { \
991 (d)->seqlo = ntohl((s)->seqlo); \
992 (d)->seqhi = ntohl((s)->seqhi); \
993 (d)->seqdiff = ntohl((s)->seqdiff); \
994 (d)->max_win = ntohs((s)->max_win); \
995 (d)->mss = ntohs((s)->mss); \
996 (d)->state = (s)->state; \
997 (d)->wscale = (s)->wscale; \
998 if ((s)->scrub.scrub_flag == PFSYNC_SCRUB_FLAG_VALID && \
999 (d)->scrub != NULL) { \
1000 (d)->scrub->pfss_flags = \
1001 ntohs((s)->scrub.pfss_flags) & PFSS_TIMESTAMP; \
1002 (d)->scrub->pfss_ttl = (s)->scrub.pfss_ttl; \
1003 (d)->scrub->pfss_ts_mod = ntohl((s)->scrub.pfss_ts_mod);\
1004 } \
1005 } while (0)
1006
1007 #define pf_state_counter_hton(s,d) do { \
1008 d[0] = htonl((s>>32)&0xffffffff); \
1009 d[1] = htonl(s&0xffffffff); \
1010 } while (0)
1011
1012 #define pf_state_counter_from_pfsync(s) \
1013 (((u_int64_t)(s[0])<<32) | (u_int64_t)(s[1]))
1014
1015 #define pf_state_counter_ntoh(s,d) do { \
1016 d = ntohl(s[0]); \
1017 d = d<<32; \
1018 d += ntohl(s[1]); \
1019 } while (0)
1020
1021 TAILQ_HEAD(pf_krulequeue, pf_krule);
1022
1023 struct pf_kanchor;
1024
1025 struct pf_kruleset {
1026 struct {
1027 struct pf_krulequeue queues[2];
1028 struct {
1029 struct pf_krulequeue *ptr;
1030 struct pf_krule **ptr_array;
1031 u_int32_t rcount;
1032 u_int32_t ticket;
1033 int open;
1034 } active, inactive;
1035 } rules[PF_RULESET_MAX];
1036 struct pf_kanchor *anchor;
1037 u_int32_t tticket;
1038 int tables;
1039 int topen;
1040 };
1041
1042 RB_HEAD(pf_kanchor_global, pf_kanchor);
1043 RB_HEAD(pf_kanchor_node, pf_kanchor);
1044 struct pf_kanchor {
1045 RB_ENTRY(pf_kanchor) entry_global;
1046 RB_ENTRY(pf_kanchor) entry_node;
1047 struct pf_kanchor *parent;
1048 struct pf_kanchor_node children;
1049 char name[PF_ANCHOR_NAME_SIZE];
1050 char path[MAXPATHLEN];
1051 struct pf_kruleset ruleset;
1052 int refcnt; /* anchor rules */
1053 };
1054 RB_PROTOTYPE(pf_kanchor_global, pf_kanchor, entry_global, pf_anchor_compare);
1055 RB_PROTOTYPE(pf_kanchor_node, pf_kanchor, entry_node, pf_kanchor_compare);
1056
1057 #define PF_RESERVED_ANCHOR "_pf"
1058
1059 #define PFR_TFLAG_PERSIST 0x00000001
1060 #define PFR_TFLAG_CONST 0x00000002
1061 #define PFR_TFLAG_ACTIVE 0x00000004
1062 #define PFR_TFLAG_INACTIVE 0x00000008
1063 #define PFR_TFLAG_REFERENCED 0x00000010
1064 #define PFR_TFLAG_REFDANCHOR 0x00000020
1065 #define PFR_TFLAG_COUNTERS 0x00000040
1066 /* Adjust masks below when adding flags. */
1067 #define PFR_TFLAG_USRMASK (PFR_TFLAG_PERSIST | \
1068 PFR_TFLAG_CONST | \
1069 PFR_TFLAG_COUNTERS)
1070 #define PFR_TFLAG_SETMASK (PFR_TFLAG_ACTIVE | \
1071 PFR_TFLAG_INACTIVE | \
1072 PFR_TFLAG_REFERENCED | \
1073 PFR_TFLAG_REFDANCHOR)
1074 #define PFR_TFLAG_ALLMASK (PFR_TFLAG_PERSIST | \
1075 PFR_TFLAG_CONST | \
1076 PFR_TFLAG_ACTIVE | \
1077 PFR_TFLAG_INACTIVE | \
1078 PFR_TFLAG_REFERENCED | \
1079 PFR_TFLAG_REFDANCHOR | \
1080 PFR_TFLAG_COUNTERS)
1081
1082 struct pf_kanchor_stackframe;
1083
1084 struct pfr_table {
1085 char pfrt_anchor[MAXPATHLEN];
1086 char pfrt_name[PF_TABLE_NAME_SIZE];
1087 u_int32_t pfrt_flags;
1088 u_int8_t pfrt_fback;
1089 };
1090
1091 enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED,
1092 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE,
1093 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_NOCOUNT, PFR_FB_MAX };
1094
1095 struct pfr_addr {
1096 union {
1097 struct in_addr _pfra_ip4addr;
1098 struct in6_addr _pfra_ip6addr;
1099 } pfra_u;
1100 u_int8_t pfra_af;
1101 u_int8_t pfra_net;
1102 u_int8_t pfra_not;
1103 u_int8_t pfra_fback;
1104 };
1105 #define pfra_ip4addr pfra_u._pfra_ip4addr
1106 #define pfra_ip6addr pfra_u._pfra_ip6addr
1107
1108 enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX };
1109 enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX };
1110 enum { PFR_TYPE_PACKETS, PFR_TYPE_BYTES, PFR_TYPE_MAX };
1111 #define PFR_NUM_COUNTERS (PFR_DIR_MAX * PFR_OP_ADDR_MAX * PFR_TYPE_MAX)
1112 #define PFR_OP_XPASS PFR_OP_ADDR_MAX
1113
1114 struct pfr_astats {
1115 struct pfr_addr pfras_a;
1116 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
1117 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
1118 long pfras_tzero;
1119 };
1120
1121 enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX };
1122
1123 struct pfr_tstats {
1124 struct pfr_table pfrts_t;
1125 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
1126 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
1127 u_int64_t pfrts_match;
1128 u_int64_t pfrts_nomatch;
1129 long pfrts_tzero;
1130 int pfrts_cnt;
1131 int pfrts_refcnt[PFR_REFCNT_MAX];
1132 };
1133
1134 #ifdef _KERNEL
1135
1136 struct pfr_kstate_counter {
1137 counter_u64_t pkc_pcpu;
1138 u_int64_t pkc_zero;
1139 };
1140
1141 static inline int
pfr_kstate_counter_init(struct pfr_kstate_counter * pfrc,int flags)1142 pfr_kstate_counter_init(struct pfr_kstate_counter *pfrc, int flags)
1143 {
1144
1145 pfrc->pkc_zero = 0;
1146 pfrc->pkc_pcpu = counter_u64_alloc(flags);
1147 if (pfrc->pkc_pcpu == NULL)
1148 return (ENOMEM);
1149 return (0);
1150 }
1151
1152 static inline void
pfr_kstate_counter_deinit(struct pfr_kstate_counter * pfrc)1153 pfr_kstate_counter_deinit(struct pfr_kstate_counter *pfrc)
1154 {
1155
1156 counter_u64_free(pfrc->pkc_pcpu);
1157 }
1158
1159 static inline u_int64_t
pfr_kstate_counter_fetch(struct pfr_kstate_counter * pfrc)1160 pfr_kstate_counter_fetch(struct pfr_kstate_counter *pfrc)
1161 {
1162 u_int64_t c;
1163
1164 c = counter_u64_fetch(pfrc->pkc_pcpu);
1165 c -= pfrc->pkc_zero;
1166 return (c);
1167 }
1168
1169 static inline void
pfr_kstate_counter_zero(struct pfr_kstate_counter * pfrc)1170 pfr_kstate_counter_zero(struct pfr_kstate_counter *pfrc)
1171 {
1172 u_int64_t c;
1173
1174 c = counter_u64_fetch(pfrc->pkc_pcpu);
1175 pfrc->pkc_zero = c;
1176 }
1177
1178 static inline void
pfr_kstate_counter_add(struct pfr_kstate_counter * pfrc,int64_t n)1179 pfr_kstate_counter_add(struct pfr_kstate_counter *pfrc, int64_t n)
1180 {
1181
1182 counter_u64_add(pfrc->pkc_pcpu, n);
1183 }
1184
1185 struct pfr_ktstats {
1186 struct pfr_table pfrts_t;
1187 struct pfr_kstate_counter pfrkts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
1188 struct pfr_kstate_counter pfrkts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
1189 struct pfr_kstate_counter pfrkts_match;
1190 struct pfr_kstate_counter pfrkts_nomatch;
1191 long pfrkts_tzero;
1192 int pfrkts_cnt;
1193 int pfrkts_refcnt[PFR_REFCNT_MAX];
1194 };
1195
1196 #endif /* _KERNEL */
1197
1198 #define pfrts_name pfrts_t.pfrt_name
1199 #define pfrts_flags pfrts_t.pfrt_flags
1200
1201 #ifndef _SOCKADDR_UNION_DEFINED
1202 #define _SOCKADDR_UNION_DEFINED
1203 union sockaddr_union {
1204 struct sockaddr sa;
1205 struct sockaddr_in sin;
1206 struct sockaddr_in6 sin6;
1207 };
1208 #endif /* _SOCKADDR_UNION_DEFINED */
1209
1210 struct pfr_kcounters {
1211 counter_u64_t pfrkc_counters;
1212 long pfrkc_tzero;
1213 };
1214 #define pfr_kentry_counter(kc, dir, op, t) \
1215 ((kc)->pfrkc_counters + \
1216 (dir) * PFR_OP_ADDR_MAX * PFR_TYPE_MAX + (op) * PFR_TYPE_MAX + (t))
1217
1218 #ifdef _KERNEL
1219 SLIST_HEAD(pfr_kentryworkq, pfr_kentry);
1220 struct pfr_kentry {
1221 struct radix_node pfrke_node[2];
1222 union sockaddr_union pfrke_sa;
1223 SLIST_ENTRY(pfr_kentry) pfrke_workq;
1224 struct pfr_kcounters pfrke_counters;
1225 u_int8_t pfrke_af;
1226 u_int8_t pfrke_net;
1227 u_int8_t pfrke_not;
1228 u_int8_t pfrke_mark;
1229 };
1230
1231 SLIST_HEAD(pfr_ktableworkq, pfr_ktable);
1232 RB_HEAD(pfr_ktablehead, pfr_ktable);
1233 struct pfr_ktable {
1234 struct pfr_ktstats pfrkt_kts;
1235 RB_ENTRY(pfr_ktable) pfrkt_tree;
1236 SLIST_ENTRY(pfr_ktable) pfrkt_workq;
1237 struct radix_node_head *pfrkt_ip4;
1238 struct radix_node_head *pfrkt_ip6;
1239 struct pfr_ktable *pfrkt_shadow;
1240 struct pfr_ktable *pfrkt_root;
1241 struct pf_kruleset *pfrkt_rs;
1242 long pfrkt_larg;
1243 int pfrkt_nflags;
1244 };
1245 #define pfrkt_t pfrkt_kts.pfrts_t
1246 #define pfrkt_name pfrkt_t.pfrt_name
1247 #define pfrkt_anchor pfrkt_t.pfrt_anchor
1248 #define pfrkt_ruleset pfrkt_t.pfrt_ruleset
1249 #define pfrkt_flags pfrkt_t.pfrt_flags
1250 #define pfrkt_cnt pfrkt_kts.pfrkts_cnt
1251 #define pfrkt_refcnt pfrkt_kts.pfrkts_refcnt
1252 #define pfrkt_packets pfrkt_kts.pfrkts_packets
1253 #define pfrkt_bytes pfrkt_kts.pfrkts_bytes
1254 #define pfrkt_match pfrkt_kts.pfrkts_match
1255 #define pfrkt_nomatch pfrkt_kts.pfrkts_nomatch
1256 #define pfrkt_tzero pfrkt_kts.pfrkts_tzero
1257 #endif
1258
1259 #ifdef _KERNEL
1260 struct pfi_kkif {
1261 char pfik_name[IFNAMSIZ];
1262 union {
1263 RB_ENTRY(pfi_kkif) _pfik_tree;
1264 LIST_ENTRY(pfi_kkif) _pfik_list;
1265 } _pfik_glue;
1266 #define pfik_tree _pfik_glue._pfik_tree
1267 #define pfik_list _pfik_glue._pfik_list
1268 struct pf_counter_u64 pfik_packets[2][2][2];
1269 struct pf_counter_u64 pfik_bytes[2][2][2];
1270 u_int32_t pfik_tzero;
1271 u_int pfik_flags;
1272 struct ifnet *pfik_ifp;
1273 struct ifg_group *pfik_group;
1274 u_int pfik_rulerefs;
1275 TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs;
1276 #ifdef PF_WANT_32_TO_64_COUNTER
1277 LIST_ENTRY(pfi_kkif) pfik_allkiflist;
1278 #endif
1279 };
1280 #endif
1281
1282 #define PFI_IFLAG_REFS 0x0001 /* has state references */
1283 #define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */
1284
1285 #ifdef _KERNEL
1286 struct pf_sctp_multihome_job;
1287 TAILQ_HEAD(pf_sctp_multihome_jobs, pf_sctp_multihome_job);
1288
1289 struct pf_pdesc {
1290 struct {
1291 int done;
1292 uid_t uid;
1293 gid_t gid;
1294 } lookup;
1295 u_int64_t tot_len; /* Make Mickey money */
1296 union pf_headers {
1297 struct tcphdr tcp;
1298 struct udphdr udp;
1299 struct sctphdr sctp;
1300 struct icmp icmp;
1301 #ifdef INET6
1302 struct icmp6_hdr icmp6;
1303 #endif /* INET6 */
1304 char any[0];
1305 } hdr;
1306
1307 struct pf_krule *nat_rule; /* nat/rdr rule applied to packet */
1308 struct pf_addr *src; /* src address */
1309 struct pf_addr *dst; /* dst address */
1310 struct pf_addr osrc;
1311 struct pf_addr odst;
1312 u_int16_t *sport;
1313 u_int16_t *dport;
1314 struct pf_mtag *pf_mtag;
1315 struct pf_rule_actions act;
1316
1317 u_int32_t p_len; /* total length of payload */
1318
1319 u_int16_t *ip_sum;
1320 u_int16_t *proto_sum;
1321 u_int16_t flags; /* Let SCRUB trigger behavior in
1322 * state code. Easier than tags */
1323 #define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */
1324 #define PFDESC_IP_REAS 0x0002 /* IP frags would've been reassembled */
1325 sa_family_t af;
1326 u_int8_t proto;
1327 u_int8_t tos;
1328 u_int8_t dir; /* direction */
1329 u_int8_t sidx; /* key index for source */
1330 u_int8_t didx; /* key index for destination */
1331 #define PFDESC_SCTP_INIT 0x0001
1332 #define PFDESC_SCTP_INIT_ACK 0x0002
1333 #define PFDESC_SCTP_COOKIE 0x0004
1334 #define PFDESC_SCTP_COOKIE_ACK 0x0008
1335 #define PFDESC_SCTP_ABORT 0x0010
1336 #define PFDESC_SCTP_SHUTDOWN 0x0020
1337 #define PFDESC_SCTP_SHUTDOWN_COMPLETE 0x0040
1338 #define PFDESC_SCTP_DATA 0x0080
1339 #define PFDESC_SCTP_ASCONF 0x0100
1340 #define PFDESC_SCTP_HEARTBEAT 0x0200
1341 #define PFDESC_SCTP_HEARTBEAT_ACK 0x0400
1342 #define PFDESC_SCTP_OTHER 0x0800
1343 #define PFDESC_SCTP_ADD_IP 0x1000
1344 u_int16_t sctp_flags;
1345 u_int32_t sctp_initiate_tag;
1346
1347 struct pf_sctp_multihome_jobs sctp_multihome_jobs;
1348 };
1349
1350 struct pf_sctp_multihome_job {
1351 TAILQ_ENTRY(pf_sctp_multihome_job) next;
1352 struct pf_pdesc pd;
1353 struct pf_addr src;
1354 struct pf_addr dst;
1355 struct mbuf *m;
1356 int op;
1357 };
1358
1359 #endif
1360
1361 /* flags for RDR options */
1362 #define PF_DPORT_RANGE 0x01 /* Dest port uses range */
1363 #define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */
1364
1365 /* UDP state enumeration */
1366 #define PFUDPS_NO_TRAFFIC 0
1367 #define PFUDPS_SINGLE 1
1368 #define PFUDPS_MULTIPLE 2
1369
1370 #define PFUDPS_NSTATES 3 /* number of state levels */
1371
1372 #define PFUDPS_NAMES { \
1373 "NO_TRAFFIC", \
1374 "SINGLE", \
1375 "MULTIPLE", \
1376 NULL \
1377 }
1378
1379 /* Other protocol state enumeration */
1380 #define PFOTHERS_NO_TRAFFIC 0
1381 #define PFOTHERS_SINGLE 1
1382 #define PFOTHERS_MULTIPLE 2
1383
1384 #define PFOTHERS_NSTATES 3 /* number of state levels */
1385
1386 #define PFOTHERS_NAMES { \
1387 "NO_TRAFFIC", \
1388 "SINGLE", \
1389 "MULTIPLE", \
1390 NULL \
1391 }
1392
1393 #define ACTION_SET(a, x) \
1394 do { \
1395 if ((a) != NULL) \
1396 *(a) = (x); \
1397 } while (0)
1398
1399 #define REASON_SET(a, x) \
1400 do { \
1401 if ((a) != NULL) \
1402 *(a) = (x); \
1403 if (x < PFRES_MAX) \
1404 counter_u64_add(V_pf_status.counters[x], 1); \
1405 } while (0)
1406
1407 enum pf_syncookies_mode {
1408 PF_SYNCOOKIES_NEVER = 0,
1409 PF_SYNCOOKIES_ALWAYS = 1,
1410 PF_SYNCOOKIES_ADAPTIVE = 2,
1411 PF_SYNCOOKIES_MODE_MAX = PF_SYNCOOKIES_ADAPTIVE
1412 };
1413
1414 #define PF_SYNCOOKIES_HIWATPCT 25
1415 #define PF_SYNCOOKIES_LOWATPCT (PF_SYNCOOKIES_HIWATPCT / 2)
1416
1417 #ifdef _KERNEL
1418 struct pf_kstatus {
1419 counter_u64_t counters[PFRES_MAX]; /* reason for passing/dropping */
1420 counter_u64_t lcounters[KLCNT_MAX]; /* limit counters */
1421 struct pf_counter_u64 fcounters[FCNT_MAX]; /* state operation counters */
1422 counter_u64_t scounters[SCNT_MAX]; /* src_node operation counters */
1423 uint32_t states;
1424 uint32_t src_nodes;
1425 uint32_t running;
1426 uint32_t since;
1427 uint32_t debug;
1428 uint32_t hostid;
1429 char ifname[IFNAMSIZ];
1430 uint8_t pf_chksum[PF_MD5_DIGEST_LENGTH];
1431 bool keep_counters;
1432 enum pf_syncookies_mode syncookies_mode;
1433 bool syncookies_active;
1434 uint64_t syncookies_inflight[2];
1435 uint32_t states_halfopen;
1436 };
1437 #endif
1438
1439 struct pf_divert {
1440 union {
1441 struct in_addr ipv4;
1442 struct in6_addr ipv6;
1443 } addr;
1444 u_int16_t port;
1445 };
1446
1447 #define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */
1448 #define PFR_KENTRY_HIWAT 200000 /* Number of table entries */
1449
1450 /*
1451 * Limit the length of the fragment queue traversal. Remember
1452 * search entry points based on the fragment offset.
1453 */
1454 #define PF_FRAG_ENTRY_POINTS 16
1455
1456 /*
1457 * The number of entries in the fragment queue must be limited
1458 * to avoid DoS by linear searching. Instead of a global limit,
1459 * use a limit per entry point. For large packets these sum up.
1460 */
1461 #define PF_FRAG_ENTRY_LIMIT 64
1462
1463 /*
1464 * ioctl parameter structures
1465 */
1466
1467 struct pfioc_pooladdr {
1468 u_int32_t action;
1469 u_int32_t ticket;
1470 u_int32_t nr;
1471 u_int32_t r_num;
1472 u_int8_t r_action;
1473 u_int8_t r_last;
1474 u_int8_t af;
1475 char anchor[MAXPATHLEN];
1476 struct pf_pooladdr addr;
1477 };
1478
1479 struct pfioc_rule {
1480 u_int32_t action;
1481 u_int32_t ticket;
1482 u_int32_t pool_ticket;
1483 u_int32_t nr;
1484 char anchor[MAXPATHLEN];
1485 char anchor_call[MAXPATHLEN];
1486 struct pf_rule rule;
1487 };
1488
1489 struct pfioc_natlook {
1490 struct pf_addr saddr;
1491 struct pf_addr daddr;
1492 struct pf_addr rsaddr;
1493 struct pf_addr rdaddr;
1494 u_int16_t sport;
1495 u_int16_t dport;
1496 u_int16_t rsport;
1497 u_int16_t rdport;
1498 sa_family_t af;
1499 u_int8_t proto;
1500 u_int8_t direction;
1501 };
1502
1503 struct pfioc_state {
1504 struct pfsync_state state;
1505 };
1506
1507 struct pfioc_src_node_kill {
1508 sa_family_t psnk_af;
1509 struct pf_rule_addr psnk_src;
1510 struct pf_rule_addr psnk_dst;
1511 u_int psnk_killed;
1512 };
1513
1514 #ifdef _KERNEL
1515 struct pf_kstate_kill {
1516 struct pf_state_cmp psk_pfcmp;
1517 sa_family_t psk_af;
1518 int psk_proto;
1519 struct pf_rule_addr psk_src;
1520 struct pf_rule_addr psk_dst;
1521 struct pf_rule_addr psk_rt_addr;
1522 char psk_ifname[IFNAMSIZ];
1523 char psk_label[PF_RULE_LABEL_SIZE];
1524 u_int psk_killed;
1525 bool psk_kill_match;
1526 };
1527 #endif
1528
1529 struct pfioc_state_kill {
1530 struct pf_state_cmp psk_pfcmp;
1531 sa_family_t psk_af;
1532 int psk_proto;
1533 struct pf_rule_addr psk_src;
1534 struct pf_rule_addr psk_dst;
1535 char psk_ifname[IFNAMSIZ];
1536 char psk_label[PF_RULE_LABEL_SIZE];
1537 u_int psk_killed;
1538 };
1539
1540 struct pfioc_states {
1541 int ps_len;
1542 union {
1543 caddr_t psu_buf;
1544 struct pfsync_state *psu_states;
1545 } ps_u;
1546 #define ps_buf ps_u.psu_buf
1547 #define ps_states ps_u.psu_states
1548 };
1549
1550 struct pfioc_states_v2 {
1551 int ps_len;
1552 uint64_t ps_req_version;
1553 union {
1554 caddr_t psu_buf;
1555 struct pf_state_export *psu_states;
1556 } ps_u;
1557 #define ps_buf ps_u.psu_buf
1558 #define ps_states ps_u.psu_states
1559 };
1560
1561 struct pfioc_src_nodes {
1562 int psn_len;
1563 union {
1564 caddr_t psu_buf;
1565 struct pf_src_node *psu_src_nodes;
1566 } psn_u;
1567 #define psn_buf psn_u.psu_buf
1568 #define psn_src_nodes psn_u.psu_src_nodes
1569 };
1570
1571 struct pfioc_if {
1572 char ifname[IFNAMSIZ];
1573 };
1574
1575 struct pfioc_tm {
1576 int timeout;
1577 int seconds;
1578 };
1579
1580 struct pfioc_limit {
1581 int index;
1582 unsigned limit;
1583 };
1584
1585 struct pfioc_altq_v0 {
1586 u_int32_t action;
1587 u_int32_t ticket;
1588 u_int32_t nr;
1589 struct pf_altq_v0 altq;
1590 };
1591
1592 struct pfioc_altq_v1 {
1593 u_int32_t action;
1594 u_int32_t ticket;
1595 u_int32_t nr;
1596 /*
1597 * Placed here so code that only uses the above parameters can be
1598 * written entirely in terms of the v0 or v1 type.
1599 */
1600 u_int32_t version;
1601 struct pf_altq_v1 altq;
1602 };
1603
1604 /*
1605 * Latest version of struct pfioc_altq_vX. This must move in lock-step with
1606 * the latest version of struct pf_altq_vX as it has that struct as a
1607 * member.
1608 */
1609 #define PFIOC_ALTQ_VERSION PF_ALTQ_VERSION
1610
1611 struct pfioc_qstats_v0 {
1612 u_int32_t ticket;
1613 u_int32_t nr;
1614 void *buf;
1615 int nbytes;
1616 u_int8_t scheduler;
1617 };
1618
1619 struct pfioc_qstats_v1 {
1620 u_int32_t ticket;
1621 u_int32_t nr;
1622 void *buf;
1623 int nbytes;
1624 u_int8_t scheduler;
1625 /*
1626 * Placed here so code that only uses the above parameters can be
1627 * written entirely in terms of the v0 or v1 type.
1628 */
1629 u_int32_t version; /* Requested version of stats struct */
1630 };
1631
1632 /* Latest version of struct pfioc_qstats_vX */
1633 #define PFIOC_QSTATS_VERSION 1
1634
1635 struct pfioc_ruleset {
1636 u_int32_t nr;
1637 char path[MAXPATHLEN];
1638 char name[PF_ANCHOR_NAME_SIZE];
1639 };
1640
1641 #define PF_RULESET_ALTQ (PF_RULESET_MAX)
1642 #define PF_RULESET_TABLE (PF_RULESET_MAX+1)
1643 struct pfioc_trans {
1644 int size; /* number of elements */
1645 int esize; /* size of each element in bytes */
1646 struct pfioc_trans_e {
1647 int rs_num;
1648 char anchor[MAXPATHLEN];
1649 u_int32_t ticket;
1650 } *array;
1651 };
1652
1653 #define PFR_FLAG_ATOMIC 0x00000001 /* unused */
1654 #define PFR_FLAG_DUMMY 0x00000002
1655 #define PFR_FLAG_FEEDBACK 0x00000004
1656 #define PFR_FLAG_CLSTATS 0x00000008
1657 #define PFR_FLAG_ADDRSTOO 0x00000010
1658 #define PFR_FLAG_REPLACE 0x00000020
1659 #define PFR_FLAG_ALLRSETS 0x00000040
1660 #define PFR_FLAG_ALLMASK 0x0000007F
1661 #ifdef _KERNEL
1662 #define PFR_FLAG_USERIOCTL 0x10000000
1663 #endif
1664
1665 struct pfioc_table {
1666 struct pfr_table pfrio_table;
1667 void *pfrio_buffer;
1668 int pfrio_esize;
1669 int pfrio_size;
1670 int pfrio_size2;
1671 int pfrio_nadd;
1672 int pfrio_ndel;
1673 int pfrio_nchange;
1674 int pfrio_flags;
1675 u_int32_t pfrio_ticket;
1676 };
1677 #define pfrio_exists pfrio_nadd
1678 #define pfrio_nzero pfrio_nadd
1679 #define pfrio_nmatch pfrio_nadd
1680 #define pfrio_naddr pfrio_size2
1681 #define pfrio_setflag pfrio_size2
1682 #define pfrio_clrflag pfrio_nadd
1683
1684 struct pfioc_iface {
1685 char pfiio_name[IFNAMSIZ];
1686 void *pfiio_buffer;
1687 int pfiio_esize;
1688 int pfiio_size;
1689 int pfiio_nzero;
1690 int pfiio_flags;
1691 };
1692
1693 /*
1694 * ioctl operations
1695 */
1696
1697 #define DIOCSTART _IO ('D', 1)
1698 #define DIOCSTOP _IO ('D', 2)
1699 #define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule)
1700 #define DIOCADDRULENV _IOWR('D', 4, struct pfioc_nv)
1701 #define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule)
1702 #define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule)
1703 #define DIOCGETRULENV _IOWR('D', 7, struct pfioc_nv)
1704 /* XXX cut 8 - 17 */
1705 #define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill)
1706 #define DIOCCLRSTATESNV _IOWR('D', 18, struct pfioc_nv)
1707 #define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state)
1708 #define DIOCGETSTATENV _IOWR('D', 19, struct pfioc_nv)
1709 #define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if)
1710 #define DIOCGETSTATUS _IOWR('D', 21, struct pf_status)
1711 #define DIOCGETSTATUSNV _IOWR('D', 21, struct pfioc_nv)
1712 #define DIOCCLRSTATUS _IO ('D', 22)
1713 #define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook)
1714 #define DIOCSETDEBUG _IOWR('D', 24, u_int32_t)
1715 #define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states)
1716 #define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule)
1717 /* XXX cut 26 - 28 */
1718 #define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm)
1719 #define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm)
1720 #define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state)
1721 #define DIOCCLRRULECTRS _IO ('D', 38)
1722 #define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit)
1723 #define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit)
1724 #define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill)
1725 #define DIOCKILLSTATESNV _IOWR('D', 41, struct pfioc_nv)
1726 #define DIOCSTARTALTQ _IO ('D', 42)
1727 #define DIOCSTOPALTQ _IO ('D', 43)
1728 #define DIOCADDALTQV0 _IOWR('D', 45, struct pfioc_altq_v0)
1729 #define DIOCADDALTQV1 _IOWR('D', 45, struct pfioc_altq_v1)
1730 #define DIOCGETALTQSV0 _IOWR('D', 47, struct pfioc_altq_v0)
1731 #define DIOCGETALTQSV1 _IOWR('D', 47, struct pfioc_altq_v1)
1732 #define DIOCGETALTQV0 _IOWR('D', 48, struct pfioc_altq_v0)
1733 #define DIOCGETALTQV1 _IOWR('D', 48, struct pfioc_altq_v1)
1734 #define DIOCCHANGEALTQV0 _IOWR('D', 49, struct pfioc_altq_v0)
1735 #define DIOCCHANGEALTQV1 _IOWR('D', 49, struct pfioc_altq_v1)
1736 #define DIOCGETQSTATSV0 _IOWR('D', 50, struct pfioc_qstats_v0)
1737 #define DIOCGETQSTATSV1 _IOWR('D', 50, struct pfioc_qstats_v1)
1738 #define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr)
1739 #define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr)
1740 #define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr)
1741 #define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr)
1742 #define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr)
1743 /* XXX cut 55 - 57 */
1744 #define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset)
1745 #define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset)
1746 #define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table)
1747 #define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table)
1748 #define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table)
1749 #define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table)
1750 #define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table)
1751 #define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table)
1752 #define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table)
1753 #define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table)
1754 #define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table)
1755 #define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table)
1756 #define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table)
1757 #define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table)
1758 #define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table)
1759 #define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table)
1760 #define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table)
1761 #define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table)
1762 #define DIOCOSFPFLUSH _IO('D', 78)
1763 #define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl)
1764 #define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl)
1765 #define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans)
1766 #define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans)
1767 #define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans)
1768 #define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes)
1769 #define DIOCCLRSRCNODES _IO('D', 85)
1770 #define DIOCSETHOSTID _IOWR('D', 86, u_int32_t)
1771 #define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface)
1772 #define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface)
1773 #define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface)
1774 #define DIOCKILLSRCNODES _IOWR('D', 91, struct pfioc_src_node_kill)
1775 #define DIOCKEEPCOUNTERS _IOWR('D', 92, struct pfioc_nv)
1776 #define DIOCGETSTATESV2 _IOWR('D', 93, struct pfioc_states_v2)
1777 #define DIOCGETSYNCOOKIES _IOWR('D', 94, struct pfioc_nv)
1778 #define DIOCSETSYNCOOKIES _IOWR('D', 95, struct pfioc_nv)
1779
1780 struct pf_ifspeed_v0 {
1781 char ifname[IFNAMSIZ];
1782 u_int32_t baudrate;
1783 };
1784
1785 struct pf_ifspeed_v1 {
1786 char ifname[IFNAMSIZ];
1787 u_int32_t baudrate32;
1788 /* layout identical to struct pf_ifspeed_v0 up to this point */
1789 u_int64_t baudrate;
1790 };
1791
1792 /* Latest version of struct pf_ifspeed_vX */
1793 #define PF_IFSPEED_VERSION 1
1794
1795 #define DIOCGIFSPEEDV0 _IOWR('D', 92, struct pf_ifspeed_v0)
1796 #define DIOCGIFSPEEDV1 _IOWR('D', 92, struct pf_ifspeed_v1)
1797
1798 /*
1799 * Compatibility and convenience macros
1800 */
1801 #ifndef _KERNEL
1802 #ifdef PFIOC_USE_LATEST
1803 /*
1804 * Maintaining in-tree consumers of the ioctl interface is easier when that
1805 * code can be written in terms old names that refer to the latest interface
1806 * version as that reduces the required changes in the consumers to those
1807 * that are functionally necessary to accommodate a new interface version.
1808 */
1809 #define pfioc_altq __CONCAT(pfioc_altq_v, PFIOC_ALTQ_VERSION)
1810 #define pfioc_qstats __CONCAT(pfioc_qstats_v, PFIOC_QSTATS_VERSION)
1811 #define pf_ifspeed __CONCAT(pf_ifspeed_v, PF_IFSPEED_VERSION)
1812
1813 #define DIOCADDALTQ __CONCAT(DIOCADDALTQV, PFIOC_ALTQ_VERSION)
1814 #define DIOCGETALTQS __CONCAT(DIOCGETALTQSV, PFIOC_ALTQ_VERSION)
1815 #define DIOCGETALTQ __CONCAT(DIOCGETALTQV, PFIOC_ALTQ_VERSION)
1816 #define DIOCCHANGEALTQ __CONCAT(DIOCCHANGEALTQV, PFIOC_ALTQ_VERSION)
1817 #define DIOCGETQSTATS __CONCAT(DIOCGETQSTATSV, PFIOC_QSTATS_VERSION)
1818 #define DIOCGIFSPEED __CONCAT(DIOCGIFSPEEDV, PF_IFSPEED_VERSION)
1819 #else
1820 /*
1821 * When building out-of-tree code that is written for the old interface,
1822 * such as may exist in ports for example, resolve the old struct tags and
1823 * ioctl command names to the v0 versions.
1824 */
1825 #define pfioc_altq __CONCAT(pfioc_altq_v, 0)
1826 #define pfioc_qstats __CONCAT(pfioc_qstats_v, 0)
1827 #define pf_ifspeed __CONCAT(pf_ifspeed_v, 0)
1828
1829 #define DIOCADDALTQ __CONCAT(DIOCADDALTQV, 0)
1830 #define DIOCGETALTQS __CONCAT(DIOCGETALTQSV, 0)
1831 #define DIOCGETALTQ __CONCAT(DIOCGETALTQV, 0)
1832 #define DIOCCHANGEALTQ __CONCAT(DIOCCHANGEALTQV, 0)
1833 #define DIOCGETQSTATS __CONCAT(DIOCGETQSTATSV, 0)
1834 #define DIOCGIFSPEED __CONCAT(DIOCGIFSPEEDV, 0)
1835 #endif /* PFIOC_USE_LATEST */
1836 #endif /* _KERNEL */
1837
1838 #ifdef _KERNEL
1839 LIST_HEAD(pf_ksrc_node_list, pf_ksrc_node);
1840 struct pf_srchash {
1841 struct pf_ksrc_node_list nodes;
1842 struct mtx lock;
1843 };
1844
1845 struct pf_keyhash {
1846 LIST_HEAD(, pf_state_key) keys;
1847 struct mtx lock;
1848 };
1849
1850 struct pf_idhash {
1851 LIST_HEAD(, pf_kstate) states;
1852 struct mtx lock;
1853 };
1854
1855 extern u_long pf_ioctl_maxcount;
1856 VNET_DECLARE(u_long, pf_hashmask);
1857 #define V_pf_hashmask VNET(pf_hashmask)
1858 VNET_DECLARE(u_long, pf_srchashmask);
1859 #define V_pf_srchashmask VNET(pf_srchashmask)
1860 #define PF_HASHSIZ (131072)
1861 #define PF_SRCHASHSIZ (PF_HASHSIZ/4)
1862 VNET_DECLARE(struct pf_keyhash *, pf_keyhash);
1863 VNET_DECLARE(struct pf_idhash *, pf_idhash);
1864 #define V_pf_keyhash VNET(pf_keyhash)
1865 #define V_pf_idhash VNET(pf_idhash)
1866 VNET_DECLARE(struct pf_srchash *, pf_srchash);
1867 #define V_pf_srchash VNET(pf_srchash)
1868
1869 #define PF_IDHASH(s) (be64toh((s)->id) % (V_pf_hashmask + 1))
1870
1871 VNET_DECLARE(void *, pf_swi_cookie);
1872 #define V_pf_swi_cookie VNET(pf_swi_cookie)
1873 VNET_DECLARE(struct intr_event *, pf_swi_ie);
1874 #define V_pf_swi_ie VNET(pf_swi_ie)
1875
1876 VNET_DECLARE(uint64_t, pf_stateid[MAXCPU]);
1877 #define V_pf_stateid VNET(pf_stateid)
1878
1879 TAILQ_HEAD(pf_altqqueue, pf_altq);
1880 VNET_DECLARE(struct pf_altqqueue, pf_altqs[4]);
1881 #define V_pf_altqs VNET(pf_altqs)
1882 VNET_DECLARE(struct pf_kpalist, pf_pabuf);
1883 #define V_pf_pabuf VNET(pf_pabuf)
1884
1885 VNET_DECLARE(u_int32_t, ticket_altqs_active);
1886 #define V_ticket_altqs_active VNET(ticket_altqs_active)
1887 VNET_DECLARE(u_int32_t, ticket_altqs_inactive);
1888 #define V_ticket_altqs_inactive VNET(ticket_altqs_inactive)
1889 VNET_DECLARE(int, altqs_inactive_open);
1890 #define V_altqs_inactive_open VNET(altqs_inactive_open)
1891 VNET_DECLARE(u_int32_t, ticket_pabuf);
1892 #define V_ticket_pabuf VNET(ticket_pabuf)
1893 VNET_DECLARE(struct pf_altqqueue *, pf_altqs_active);
1894 #define V_pf_altqs_active VNET(pf_altqs_active)
1895 VNET_DECLARE(struct pf_altqqueue *, pf_altq_ifs_active);
1896 #define V_pf_altq_ifs_active VNET(pf_altq_ifs_active)
1897 VNET_DECLARE(struct pf_altqqueue *, pf_altqs_inactive);
1898 #define V_pf_altqs_inactive VNET(pf_altqs_inactive)
1899 VNET_DECLARE(struct pf_altqqueue *, pf_altq_ifs_inactive);
1900 #define V_pf_altq_ifs_inactive VNET(pf_altq_ifs_inactive)
1901
1902 VNET_DECLARE(struct pf_krulequeue, pf_unlinked_rules);
1903 #define V_pf_unlinked_rules VNET(pf_unlinked_rules)
1904
1905 #ifdef PF_WANT_32_TO_64_COUNTER
1906 LIST_HEAD(allkiflist_head, pfi_kkif);
1907 VNET_DECLARE(struct allkiflist_head, pf_allkiflist);
1908 #define V_pf_allkiflist VNET(pf_allkiflist)
1909 VNET_DECLARE(size_t, pf_allkifcount);
1910 #define V_pf_allkifcount VNET(pf_allkifcount)
1911 VNET_DECLARE(struct pfi_kkif *, pf_kifmarker);
1912 #define V_pf_kifmarker VNET(pf_kifmarker)
1913
1914 LIST_HEAD(allrulelist_head, pf_krule);
1915 VNET_DECLARE(struct allrulelist_head, pf_allrulelist);
1916 #define V_pf_allrulelist VNET(pf_allrulelist)
1917 VNET_DECLARE(size_t, pf_allrulecount);
1918 #define V_pf_allrulecount VNET(pf_allrulecount)
1919 VNET_DECLARE(struct pf_krule *, pf_rulemarker);
1920 #define V_pf_rulemarker VNET(pf_rulemarker)
1921 #endif
1922
1923 void pf_initialize(void);
1924 void pf_mtag_initialize(void);
1925 void pf_mtag_cleanup(void);
1926 void pf_cleanup(void);
1927
1928 struct pf_mtag *pf_get_mtag(struct mbuf *);
1929
1930 extern void pf_calc_skip_steps(struct pf_krulequeue *);
1931 #ifdef ALTQ
1932 extern void pf_altq_ifnet_event(struct ifnet *, int);
1933 #endif
1934 VNET_DECLARE(uma_zone_t, pf_state_z);
1935 #define V_pf_state_z VNET(pf_state_z)
1936 VNET_DECLARE(uma_zone_t, pf_state_key_z);
1937 #define V_pf_state_key_z VNET(pf_state_key_z)
1938 VNET_DECLARE(uma_zone_t, pf_state_scrub_z);
1939 #define V_pf_state_scrub_z VNET(pf_state_scrub_z)
1940
1941 extern void pf_purge_thread(void *);
1942 extern void pf_unload_vnet_purge(void);
1943 extern void pf_intr(void *);
1944 extern void pf_purge_expired_src_nodes(void);
1945
1946 extern int pf_unlink_state(struct pf_kstate *, u_int);
1947 #define PF_ENTER_LOCKED 0x00000001
1948 #define PF_RETURN_LOCKED 0x00000002
1949 extern int pf_state_insert(struct pfi_kkif *,
1950 struct pfi_kkif *,
1951 struct pf_state_key *,
1952 struct pf_state_key *,
1953 struct pf_kstate *);
1954 extern struct pf_kstate *pf_alloc_state(int);
1955 extern void pf_free_state(struct pf_kstate *);
1956
1957 static __inline void
pf_ref_state(struct pf_kstate * s)1958 pf_ref_state(struct pf_kstate *s)
1959 {
1960
1961 refcount_acquire(&s->refs);
1962 }
1963
1964 static __inline int
pf_release_state(struct pf_kstate * s)1965 pf_release_state(struct pf_kstate *s)
1966 {
1967
1968 if (refcount_release(&s->refs)) {
1969 pf_free_state(s);
1970 return (1);
1971 } else
1972 return (0);
1973 }
1974
1975 static __inline int
pf_release_staten(struct pf_kstate * s,u_int n)1976 pf_release_staten(struct pf_kstate *s, u_int n)
1977 {
1978
1979 if (refcount_releasen(&s->refs, n)) {
1980 pf_free_state(s);
1981 return (1);
1982 } else
1983 return (0);
1984 }
1985
1986 extern struct pf_kstate *pf_find_state_byid(uint64_t, uint32_t);
1987 extern struct pf_kstate *pf_find_state_all(struct pf_state_key_cmp *,
1988 u_int, int *);
1989 extern bool pf_find_state_all_exists(struct pf_state_key_cmp *,
1990 u_int);
1991 extern struct pf_ksrc_node *pf_find_src_node(struct pf_addr *,
1992 struct pf_krule *, sa_family_t, int);
1993 extern void pf_unlink_src_node(struct pf_ksrc_node *);
1994 extern u_int pf_free_src_nodes(struct pf_ksrc_node_list *);
1995 extern void pf_print_state(struct pf_kstate *);
1996 extern void pf_print_flags(u_int8_t);
1997 extern u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t,
1998 u_int8_t);
1999 extern u_int16_t pf_proto_cksum_fixup(struct mbuf *, u_int16_t,
2000 u_int16_t, u_int16_t, u_int8_t);
2001
2002 VNET_DECLARE(struct ifnet *, sync_ifp);
2003 #define V_sync_ifp VNET(sync_ifp);
2004 VNET_DECLARE(struct pf_krule, pf_default_rule);
2005 #define V_pf_default_rule VNET(pf_default_rule)
2006 extern void pf_addrcpy(struct pf_addr *, struct pf_addr *,
2007 u_int8_t);
2008 void pf_free_rule(struct pf_krule *);
2009
2010 #ifdef INET
2011 int pf_test(int, int, struct ifnet *, struct mbuf **, struct inpcb *);
2012 int pf_normalize_ip(struct mbuf **, int, struct pfi_kkif *, u_short *,
2013 struct pf_pdesc *);
2014 #endif /* INET */
2015
2016 #ifdef INET6
2017 int pf_test6(int, int, struct ifnet *, struct mbuf **, struct inpcb *);
2018 int pf_normalize_ip6(struct mbuf **, int, struct pfi_kkif *, u_short *,
2019 struct pf_pdesc *);
2020 void pf_poolmask(struct pf_addr *, struct pf_addr*,
2021 struct pf_addr *, struct pf_addr *, u_int8_t);
2022 void pf_addr_inc(struct pf_addr *, sa_family_t);
2023 int pf_refragment6(struct ifnet *, struct mbuf **, struct m_tag *);
2024 #endif /* INET6 */
2025
2026 int pf_multihome_scan_init(struct mbuf *, int, int, struct pf_pdesc *,
2027 struct pfi_kkif *);
2028 int pf_multihome_scan_asconf(struct mbuf *, int, int, struct pf_pdesc *,
2029 struct pfi_kkif *);
2030
2031 u_int32_t pf_new_isn(struct pf_kstate *);
2032 void *pf_pull_hdr(struct mbuf *, int, void *, int, u_short *, u_short *,
2033 sa_family_t);
2034 void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t);
2035 void pf_change_proto_a(struct mbuf *, void *, u_int16_t *, u_int32_t,
2036 u_int8_t);
2037 void pf_change_tcp_a(struct mbuf *, void *, u_int16_t *, u_int32_t);
2038 void pf_patch_16_unaligned(struct mbuf *, u_int16_t *, void *, u_int16_t,
2039 bool, u_int8_t);
2040 void pf_patch_32_unaligned(struct mbuf *, u_int16_t *, void *, u_int32_t,
2041 bool, u_int8_t);
2042 void pf_send_deferred_syn(struct pf_kstate *);
2043 int pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *,
2044 struct pf_addr *, sa_family_t);
2045 int pf_match_addr_range(struct pf_addr *, struct pf_addr *,
2046 struct pf_addr *, sa_family_t);
2047 int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t);
2048
2049 void pf_normalize_init(void);
2050 void pf_normalize_cleanup(void);
2051 int pf_normalize_tcp(int, struct pfi_kkif *, struct mbuf *, int, int, void *,
2052 struct pf_pdesc *);
2053 void pf_normalize_tcp_cleanup(struct pf_kstate *);
2054 int pf_normalize_tcp_init(struct mbuf *, int, struct pf_pdesc *,
2055 struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *);
2056 int pf_normalize_tcp_stateful(struct mbuf *, int, struct pf_pdesc *,
2057 u_short *, struct tcphdr *, struct pf_kstate *,
2058 struct pf_state_peer *, struct pf_state_peer *, int *);
2059 int pf_normalize_sctp_init(struct mbuf *, int, struct pf_pdesc *,
2060 struct pf_state_peer *, struct pf_state_peer *);
2061 int pf_normalize_sctp(int, struct pfi_kkif *, struct mbuf *, int,
2062 int, void *, struct pf_pdesc *);
2063 u_int32_t
2064 pf_state_expires(const struct pf_kstate *);
2065 void pf_purge_expired_fragments(void);
2066 void pf_purge_fragments(uint32_t);
2067 int pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kkif *,
2068 int);
2069 int pf_socket_lookup(int, struct pf_pdesc *, struct mbuf *);
2070 struct pf_state_key *pf_alloc_state_key(int);
2071 void pfr_initialize(void);
2072 void pfr_cleanup(void);
2073 int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t);
2074 void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t,
2075 u_int64_t, int, int, int);
2076 int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, sa_family_t);
2077 void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *);
2078 struct pfr_ktable *
2079 pfr_attach_table(struct pf_kruleset *, char *);
2080 void pfr_detach_table(struct pfr_ktable *);
2081 int pfr_clr_tables(struct pfr_table *, int *, int);
2082 int pfr_add_tables(struct pfr_table *, int, int *, int);
2083 int pfr_del_tables(struct pfr_table *, int, int *, int);
2084 int pfr_table_count(struct pfr_table *, int);
2085 int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int);
2086 int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int);
2087 int pfr_clr_tstats(struct pfr_table *, int, int *, int);
2088 int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int);
2089 int pfr_clr_addrs(struct pfr_table *, int *, int);
2090 int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *, long);
2091 int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
2092 int);
2093 int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
2094 int);
2095 int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
2096 int *, int *, int *, int, u_int32_t);
2097 int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int);
2098 int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int);
2099 int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *,
2100 int);
2101 int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
2102 int);
2103 int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int);
2104 int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int);
2105 int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int);
2106 int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *,
2107 int *, u_int32_t, int);
2108
2109 MALLOC_DECLARE(PFI_MTYPE);
2110 VNET_DECLARE(struct pfi_kkif *, pfi_all);
2111 #define V_pfi_all VNET(pfi_all)
2112
2113 void pfi_initialize(void);
2114 void pfi_initialize_vnet(void);
2115 void pfi_cleanup(void);
2116 void pfi_cleanup_vnet(void);
2117 void pfi_kkif_ref(struct pfi_kkif *);
2118 void pfi_kkif_unref(struct pfi_kkif *);
2119 struct pfi_kkif *pfi_kkif_find(const char *);
2120 struct pfi_kkif *pfi_kkif_attach(struct pfi_kkif *, const char *);
2121 int pfi_kkif_match(struct pfi_kkif *, struct pfi_kkif *);
2122 void pfi_kkif_purge(void);
2123 int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *,
2124 sa_family_t);
2125 int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t);
2126 void pfi_dynaddr_remove(struct pfi_dynaddr *);
2127 void pfi_dynaddr_copyout(struct pf_addr_wrap *);
2128 void pfi_update_status(const char *, struct pf_status *);
2129 void pfi_get_ifaces(const char *, struct pfi_kif *, int *);
2130 int pfi_set_flags(const char *, int);
2131 int pfi_clear_flags(const char *, int);
2132
2133 int pf_match_tag(struct mbuf *, struct pf_krule *, int *, int);
2134 int pf_tag_packet(struct mbuf *, struct pf_pdesc *, int);
2135 int pf_addr_cmp(struct pf_addr *, struct pf_addr *,
2136 sa_family_t);
2137
2138 u_int16_t pf_get_mss(struct mbuf *, int, u_int16_t, sa_family_t);
2139 u_int8_t pf_get_wscale(struct mbuf *, int, u_int16_t, sa_family_t);
2140 struct mbuf *pf_build_tcp(const struct pf_krule *, sa_family_t,
2141 const struct pf_addr *, const struct pf_addr *,
2142 u_int16_t, u_int16_t, u_int32_t, u_int32_t,
2143 u_int8_t, u_int16_t, u_int16_t, u_int8_t, int,
2144 u_int16_t);
2145 void pf_send_tcp(const struct pf_krule *, sa_family_t,
2146 const struct pf_addr *, const struct pf_addr *,
2147 u_int16_t, u_int16_t, u_int32_t, u_int32_t,
2148 u_int8_t, u_int16_t, u_int16_t, u_int8_t, int,
2149 u_int16_t);
2150
2151 void pf_syncookies_init(void);
2152 void pf_syncookies_cleanup(void);
2153 int pf_get_syncookies(struct pfioc_nv *);
2154 int pf_set_syncookies(struct pfioc_nv *);
2155 int pf_synflood_check(struct pf_pdesc *);
2156 void pf_syncookie_send(struct mbuf *m, int off,
2157 struct pf_pdesc *);
2158 bool pf_syncookie_check(struct pf_pdesc *);
2159 u_int8_t pf_syncookie_validate(struct pf_pdesc *);
2160 struct mbuf * pf_syncookie_recreate_syn(uint8_t, int,
2161 struct pf_pdesc *);
2162
2163 VNET_DECLARE(struct pf_kstatus, pf_status);
2164 #define V_pf_status VNET(pf_status)
2165
2166 struct pf_limit {
2167 uma_zone_t zone;
2168 u_int limit;
2169 };
2170 VNET_DECLARE(struct pf_limit, pf_limits[PF_LIMIT_MAX]);
2171 #define V_pf_limits VNET(pf_limits)
2172
2173 #endif /* _KERNEL */
2174
2175 #ifdef _KERNEL
2176 VNET_DECLARE(struct pf_kanchor_global, pf_anchors);
2177 #define V_pf_anchors VNET(pf_anchors)
2178 VNET_DECLARE(struct pf_kanchor, pf_main_anchor);
2179 #define V_pf_main_anchor VNET(pf_main_anchor)
2180 #define pf_main_ruleset V_pf_main_anchor.ruleset
2181
2182 void pf_init_kruleset(struct pf_kruleset *);
2183 int pf_kanchor_setup(struct pf_krule *,
2184 const struct pf_kruleset *, const char *);
2185 int pf_kanchor_nvcopyout(const struct pf_kruleset *,
2186 const struct pf_krule *, nvlist_t *);
2187 int pf_kanchor_copyout(const struct pf_kruleset *,
2188 const struct pf_krule *, struct pfioc_rule *);
2189 void pf_kanchor_remove(struct pf_krule *);
2190 void pf_remove_if_empty_kruleset(struct pf_kruleset *);
2191 struct pf_kruleset *pf_find_kruleset(const char *);
2192 struct pf_kruleset *pf_find_or_create_kruleset(const char *);
2193 void pf_rs_initialize(void);
2194
2195 struct pf_krule *pf_krule_alloc(void);
2196 void pf_krule_free(struct pf_krule *);
2197 #endif
2198
2199 /* The fingerprint functions can be linked into userland programs (tcpdump) */
2200 int pf_osfp_add(struct pf_osfp_ioctl *);
2201 #ifdef _KERNEL
2202 struct pf_osfp_enlist *
2203 pf_osfp_fingerprint(struct pf_pdesc *, struct mbuf *, int,
2204 const struct tcphdr *);
2205 #endif /* _KERNEL */
2206 void pf_osfp_flush(void);
2207 int pf_osfp_get(struct pf_osfp_ioctl *);
2208 int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t);
2209
2210 #ifdef _KERNEL
2211 void pf_print_host(struct pf_addr *, u_int16_t, u_int8_t);
2212
2213 void pf_step_into_anchor(struct pf_kanchor_stackframe *, int *,
2214 struct pf_kruleset **, int, struct pf_krule **,
2215 struct pf_krule **, int *);
2216 int pf_step_out_of_anchor(struct pf_kanchor_stackframe *, int *,
2217 struct pf_kruleset **, int, struct pf_krule **,
2218 struct pf_krule **, int *);
2219
2220 int pf_map_addr(u_int8_t, struct pf_krule *,
2221 struct pf_addr *, struct pf_addr *,
2222 struct pf_addr *, struct pf_ksrc_node **);
2223 struct pf_krule *pf_get_translation(struct pf_pdesc *, struct mbuf *,
2224 int, int, struct pfi_kkif *, struct pf_ksrc_node **,
2225 struct pf_state_key **, struct pf_state_key **,
2226 struct pf_addr *, struct pf_addr *,
2227 uint16_t, uint16_t, struct pf_kanchor_stackframe *);
2228
2229 struct pf_state_key *pf_state_key_setup(struct pf_pdesc *, struct mbuf *, int, struct pf_addr *,
2230 struct pf_addr *, u_int16_t, u_int16_t);
2231 struct pf_state_key *pf_state_key_clone(struct pf_state_key *);
2232
2233 struct pfi_kkif *pf_kkif_create(int);
2234 void pf_kkif_free(struct pfi_kkif *);
2235 void pf_kkif_zero(struct pfi_kkif *);
2236 #endif /* _KERNEL */
2237
2238 #endif /* _NET_PFVAR_H_ */
2239