1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2001 Daniel Hartmeier
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
11 * - Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * - Redistributions in binary form must reproduce the above
14 * copyright notice, this list of conditions and the following
15 * disclaimer in the documentation and/or other materials provided
16 * with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
21 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
22 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
24 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
25 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
26 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
28 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 *
31 * $OpenBSD: pfvar.h,v 1.282 2009/01/29 15:12:28 pyr Exp $
32 */
33
34 #ifndef _NET_PFVAR_H_
35 #define _NET_PFVAR_H_
36
37 #include <sys/param.h>
38 #include <sys/queue.h>
39 #include <sys/counter.h>
40 #include <sys/cpuset.h>
41 #include <sys/epoch.h>
42 #include <sys/malloc.h>
43 #include <sys/nv.h>
44 #include <sys/refcount.h>
45 #include <sys/sdt.h>
46 #include <sys/sysctl.h>
47 #include <sys/smp.h>
48 #include <sys/lock.h>
49 #include <sys/rmlock.h>
50 #include <sys/tree.h>
51 #include <sys/seqc.h>
52 #include <vm/uma.h>
53
54 #include <net/if.h>
55 #include <net/ethernet.h>
56 #include <net/radix.h>
57 #include <netinet/in.h>
58 #ifdef _KERNEL
59 #include <netinet/ip.h>
60 #include <netinet/tcp.h>
61 #include <netinet/udp.h>
62 #include <netinet/sctp.h>
63 #include <netinet/ip_icmp.h>
64 #include <netinet/icmp6.h>
65 #endif
66
67 #include <netpfil/pf/pf.h>
68 #include <netpfil/pf/pf_altq.h>
69 #include <netpfil/pf/pf_mtag.h>
70
71 #ifdef _KERNEL
72
73 #if defined(__arm__)
74 #define PF_WANT_32_TO_64_COUNTER
75 #endif
76
77 /*
78 * A hybrid of 32-bit and 64-bit counters which can be used on platforms where
79 * counter(9) is very expensive.
80 *
81 * As 32-bit counters are expected to overflow, a periodic job sums them up to
82 * a saved 64-bit state. Fetching the value still walks all CPUs to get the most
83 * current snapshot.
84 */
85 #ifdef PF_WANT_32_TO_64_COUNTER
86 struct pf_counter_u64_pcpu {
87 u_int32_t current;
88 u_int32_t snapshot;
89 };
90
91 struct pf_counter_u64 {
92 struct pf_counter_u64_pcpu *pfcu64_pcpu;
93 u_int64_t pfcu64_value;
94 seqc_t pfcu64_seqc;
95 };
96
97 static inline int
pf_counter_u64_init(struct pf_counter_u64 * pfcu64,int flags)98 pf_counter_u64_init(struct pf_counter_u64 *pfcu64, int flags)
99 {
100
101 pfcu64->pfcu64_value = 0;
102 pfcu64->pfcu64_seqc = 0;
103 pfcu64->pfcu64_pcpu = uma_zalloc_pcpu(pcpu_zone_8, flags | M_ZERO);
104 if (__predict_false(pfcu64->pfcu64_pcpu == NULL))
105 return (ENOMEM);
106 return (0);
107 }
108
109 static inline void
pf_counter_u64_deinit(struct pf_counter_u64 * pfcu64)110 pf_counter_u64_deinit(struct pf_counter_u64 *pfcu64)
111 {
112
113 uma_zfree_pcpu(pcpu_zone_8, pfcu64->pfcu64_pcpu);
114 }
115
116 static inline void
pf_counter_u64_critical_enter(void)117 pf_counter_u64_critical_enter(void)
118 {
119
120 critical_enter();
121 }
122
123 static inline void
pf_counter_u64_critical_exit(void)124 pf_counter_u64_critical_exit(void)
125 {
126
127 critical_exit();
128 }
129
130 static inline void
pf_counter_u64_add_protected(struct pf_counter_u64 * pfcu64,uint32_t n)131 pf_counter_u64_add_protected(struct pf_counter_u64 *pfcu64, uint32_t n)
132 {
133 struct pf_counter_u64_pcpu *pcpu;
134 u_int32_t val;
135
136 MPASS(curthread->td_critnest > 0);
137 pcpu = zpcpu_get(pfcu64->pfcu64_pcpu);
138 val = atomic_load_int(&pcpu->current);
139 atomic_store_int(&pcpu->current, val + n);
140 }
141
142 static inline void
pf_counter_u64_add(struct pf_counter_u64 * pfcu64,uint32_t n)143 pf_counter_u64_add(struct pf_counter_u64 *pfcu64, uint32_t n)
144 {
145
146 critical_enter();
147 pf_counter_u64_add_protected(pfcu64, n);
148 critical_exit();
149 }
150
151 static inline u_int64_t
pf_counter_u64_periodic(struct pf_counter_u64 * pfcu64)152 pf_counter_u64_periodic(struct pf_counter_u64 *pfcu64)
153 {
154 struct pf_counter_u64_pcpu *pcpu;
155 u_int64_t sum;
156 u_int32_t val;
157 int cpu;
158
159 MPASS(curthread->td_critnest > 0);
160 seqc_write_begin(&pfcu64->pfcu64_seqc);
161 sum = pfcu64->pfcu64_value;
162 CPU_FOREACH(cpu) {
163 pcpu = zpcpu_get_cpu(pfcu64->pfcu64_pcpu, cpu);
164 val = atomic_load_int(&pcpu->current);
165 sum += (uint32_t)(val - pcpu->snapshot);
166 pcpu->snapshot = val;
167 }
168 pfcu64->pfcu64_value = sum;
169 seqc_write_end(&pfcu64->pfcu64_seqc);
170 return (sum);
171 }
172
173 static inline u_int64_t
pf_counter_u64_fetch(const struct pf_counter_u64 * pfcu64)174 pf_counter_u64_fetch(const struct pf_counter_u64 *pfcu64)
175 {
176 struct pf_counter_u64_pcpu *pcpu;
177 u_int64_t sum;
178 seqc_t seqc;
179 int cpu;
180
181 for (;;) {
182 seqc = seqc_read(&pfcu64->pfcu64_seqc);
183 sum = 0;
184 CPU_FOREACH(cpu) {
185 pcpu = zpcpu_get_cpu(pfcu64->pfcu64_pcpu, cpu);
186 sum += (uint32_t)(atomic_load_int(&pcpu->current) -pcpu->snapshot);
187 }
188 sum += pfcu64->pfcu64_value;
189 if (seqc_consistent(&pfcu64->pfcu64_seqc, seqc))
190 break;
191 }
192 return (sum);
193 }
194
195 static inline void
pf_counter_u64_zero_protected(struct pf_counter_u64 * pfcu64)196 pf_counter_u64_zero_protected(struct pf_counter_u64 *pfcu64)
197 {
198 struct pf_counter_u64_pcpu *pcpu;
199 int cpu;
200
201 MPASS(curthread->td_critnest > 0);
202 seqc_write_begin(&pfcu64->pfcu64_seqc);
203 CPU_FOREACH(cpu) {
204 pcpu = zpcpu_get_cpu(pfcu64->pfcu64_pcpu, cpu);
205 pcpu->snapshot = atomic_load_int(&pcpu->current);
206 }
207 pfcu64->pfcu64_value = 0;
208 seqc_write_end(&pfcu64->pfcu64_seqc);
209 }
210
211 static inline void
pf_counter_u64_zero(struct pf_counter_u64 * pfcu64)212 pf_counter_u64_zero(struct pf_counter_u64 *pfcu64)
213 {
214
215 critical_enter();
216 pf_counter_u64_zero_protected(pfcu64);
217 critical_exit();
218 }
219 #else
220 struct pf_counter_u64 {
221 counter_u64_t counter;
222 };
223
224 static inline int
pf_counter_u64_init(struct pf_counter_u64 * pfcu64,int flags)225 pf_counter_u64_init(struct pf_counter_u64 *pfcu64, int flags)
226 {
227
228 pfcu64->counter = counter_u64_alloc(flags);
229 if (__predict_false(pfcu64->counter == NULL))
230 return (ENOMEM);
231 return (0);
232 }
233
234 static inline void
pf_counter_u64_deinit(struct pf_counter_u64 * pfcu64)235 pf_counter_u64_deinit(struct pf_counter_u64 *pfcu64)
236 {
237
238 counter_u64_free(pfcu64->counter);
239 }
240
241 static inline void
pf_counter_u64_critical_enter(void)242 pf_counter_u64_critical_enter(void)
243 {
244
245 }
246
247 static inline void
pf_counter_u64_critical_exit(void)248 pf_counter_u64_critical_exit(void)
249 {
250
251 }
252
253 static inline void
pf_counter_u64_add_protected(struct pf_counter_u64 * pfcu64,uint32_t n)254 pf_counter_u64_add_protected(struct pf_counter_u64 *pfcu64, uint32_t n)
255 {
256
257 counter_u64_add(pfcu64->counter, n);
258 }
259
260 static inline void
pf_counter_u64_add(struct pf_counter_u64 * pfcu64,uint32_t n)261 pf_counter_u64_add(struct pf_counter_u64 *pfcu64, uint32_t n)
262 {
263
264 pf_counter_u64_add_protected(pfcu64, n);
265 }
266
267 static inline u_int64_t
pf_counter_u64_fetch(const struct pf_counter_u64 * pfcu64)268 pf_counter_u64_fetch(const struct pf_counter_u64 *pfcu64)
269 {
270
271 return (counter_u64_fetch(pfcu64->counter));
272 }
273
274 static inline void
pf_counter_u64_zero_protected(struct pf_counter_u64 * pfcu64)275 pf_counter_u64_zero_protected(struct pf_counter_u64 *pfcu64)
276 {
277
278 counter_u64_zero(pfcu64->counter);
279 }
280
281 static inline void
pf_counter_u64_zero(struct pf_counter_u64 * pfcu64)282 pf_counter_u64_zero(struct pf_counter_u64 *pfcu64)
283 {
284
285 pf_counter_u64_zero_protected(pfcu64);
286 }
287 #endif
288
289 #define pf_get_timestamp(prule)({ \
290 uint32_t _ts = 0; \
291 uint32_t __ts; \
292 int cpu; \
293 CPU_FOREACH(cpu) { \
294 __ts = *zpcpu_get_cpu(prule->timestamp, cpu); \
295 if (__ts > _ts) \
296 _ts = __ts; \
297 } \
298 _ts; \
299 })
300
301 #define pf_update_timestamp(prule) \
302 do { \
303 critical_enter(); \
304 *zpcpu_get((prule)->timestamp) = time_second; \
305 critical_exit(); \
306 } while (0)
307
308 #define pf_timestamp_pcpu_zone (sizeof(time_t) == 4 ? pcpu_zone_4 : pcpu_zone_8)
309 _Static_assert(sizeof(time_t) == 4 || sizeof(time_t) == 8, "unexpected time_t size");
310
311 SYSCTL_DECL(_net_pf);
312 MALLOC_DECLARE(M_PFHASH);
313 MALLOC_DECLARE(M_PF_RULE_ITEM);
314
315 SDT_PROVIDER_DECLARE(pf);
316
317 struct pfi_dynaddr {
318 TAILQ_ENTRY(pfi_dynaddr) entry;
319 struct pf_addr pfid_addr4;
320 struct pf_addr pfid_mask4;
321 struct pf_addr pfid_addr6;
322 struct pf_addr pfid_mask6;
323 struct pfr_ktable *pfid_kt;
324 struct pfi_kkif *pfid_kif;
325 int pfid_net; /* mask or 128 */
326 int pfid_acnt4; /* address count IPv4 */
327 int pfid_acnt6; /* address count IPv6 */
328 sa_family_t pfid_af; /* rule af */
329 u_int8_t pfid_iflags; /* PFI_AFLAG_* */
330 };
331
332 /*
333 * Address manipulation macros
334 */
335 #define HTONL(x) (x) = htonl((__uint32_t)(x))
336 #define HTONS(x) (x) = htons((__uint16_t)(x))
337 #define NTOHL(x) (x) = ntohl((__uint32_t)(x))
338 #define NTOHS(x) (x) = ntohs((__uint16_t)(x))
339
340 #define PF_NAME "pf"
341
342 #define PF_HASHROW_ASSERT(h) mtx_assert(&(h)->lock, MA_OWNED)
343 #define PF_HASHROW_LOCK(h) mtx_lock(&(h)->lock)
344 #define PF_HASHROW_UNLOCK(h) mtx_unlock(&(h)->lock)
345
346 #ifdef INVARIANTS
347 #define PF_STATE_LOCK(s) \
348 do { \
349 struct pf_kstate *_s = (s); \
350 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(_s)]; \
351 MPASS(_s->lock == &_ih->lock); \
352 mtx_lock(_s->lock); \
353 } while (0)
354 #define PF_STATE_UNLOCK(s) \
355 do { \
356 struct pf_kstate *_s = (s); \
357 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(_s)]; \
358 MPASS(_s->lock == &_ih->lock); \
359 mtx_unlock(_s->lock); \
360 } while (0)
361 #else
362 #define PF_STATE_LOCK(s) mtx_lock(s->lock)
363 #define PF_STATE_UNLOCK(s) mtx_unlock(s->lock)
364 #endif
365
366 #ifdef INVARIANTS
367 #define PF_STATE_LOCK_ASSERT(s) \
368 do { \
369 struct pf_kstate *_s = (s); \
370 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(_s)]; \
371 MPASS(_s->lock == &_ih->lock); \
372 PF_HASHROW_ASSERT(_ih); \
373 } while (0)
374 #else /* !INVARIANTS */
375 #define PF_STATE_LOCK_ASSERT(s) do {} while (0)
376 #endif /* INVARIANTS */
377
378 #ifdef INVARIANTS
379 #define PF_SRC_NODE_LOCK(sn) \
380 do { \
381 struct pf_ksrc_node *_sn = (sn); \
382 struct pf_srchash *_sh = &V_pf_srchash[ \
383 pf_hashsrc(&_sn->addr, _sn->af)]; \
384 MPASS(_sn->lock == &_sh->lock); \
385 mtx_lock(_sn->lock); \
386 } while (0)
387 #define PF_SRC_NODE_UNLOCK(sn) \
388 do { \
389 struct pf_ksrc_node *_sn = (sn); \
390 struct pf_srchash *_sh = &V_pf_srchash[ \
391 pf_hashsrc(&_sn->addr, _sn->af)]; \
392 MPASS(_sn->lock == &_sh->lock); \
393 mtx_unlock(_sn->lock); \
394 } while (0)
395 #else
396 #define PF_SRC_NODE_LOCK(sn) mtx_lock((sn)->lock)
397 #define PF_SRC_NODE_UNLOCK(sn) mtx_unlock((sn)->lock)
398 #endif
399
400 #ifdef INVARIANTS
401 #define PF_SRC_NODE_LOCK_ASSERT(sn) \
402 do { \
403 struct pf_ksrc_node *_sn = (sn); \
404 struct pf_srchash *_sh = &V_pf_srchash[ \
405 pf_hashsrc(&_sn->addr, _sn->af)]; \
406 MPASS(_sn->lock == &_sh->lock); \
407 PF_HASHROW_ASSERT(_sh); \
408 } while (0)
409 #else /* !INVARIANTS */
410 #define PF_SRC_NODE_LOCK_ASSERT(sn) do {} while (0)
411 #endif /* INVARIANTS */
412
413 extern struct mtx_padalign pf_unlnkdrules_mtx;
414 #define PF_UNLNKDRULES_LOCK() mtx_lock(&pf_unlnkdrules_mtx)
415 #define PF_UNLNKDRULES_UNLOCK() mtx_unlock(&pf_unlnkdrules_mtx)
416 #define PF_UNLNKDRULES_ASSERT() mtx_assert(&pf_unlnkdrules_mtx, MA_OWNED)
417
418 extern struct sx pf_config_lock;
419 #define PF_CONFIG_LOCK() sx_xlock(&pf_config_lock)
420 #define PF_CONFIG_UNLOCK() sx_xunlock(&pf_config_lock)
421 #define PF_CONFIG_ASSERT() sx_assert(&pf_config_lock, SA_XLOCKED)
422
423 VNET_DECLARE(struct rmlock, pf_rules_lock);
424 #define V_pf_rules_lock VNET(pf_rules_lock)
425
426 #define PF_RULES_RLOCK_TRACKER struct rm_priotracker _pf_rules_tracker
427 #define PF_RULES_RLOCK() rm_rlock(&V_pf_rules_lock, &_pf_rules_tracker)
428 #define PF_RULES_RUNLOCK() rm_runlock(&V_pf_rules_lock, &_pf_rules_tracker)
429 #define PF_RULES_WLOCK() rm_wlock(&V_pf_rules_lock)
430 #define PF_RULES_WUNLOCK() rm_wunlock(&V_pf_rules_lock)
431 #define PF_RULES_WOWNED() rm_wowned(&V_pf_rules_lock)
432 #define PF_RULES_ASSERT() rm_assert(&V_pf_rules_lock, RA_LOCKED)
433 #define PF_RULES_RASSERT() rm_assert(&V_pf_rules_lock, RA_RLOCKED)
434 #define PF_RULES_WASSERT() rm_assert(&V_pf_rules_lock, RA_WLOCKED)
435
436 extern struct mtx_padalign pf_table_stats_lock;
437 #define PF_TABLE_STATS_LOCK() mtx_lock(&pf_table_stats_lock)
438 #define PF_TABLE_STATS_UNLOCK() mtx_unlock(&pf_table_stats_lock)
439 #define PF_TABLE_STATS_OWNED() mtx_owned(&pf_table_stats_lock)
440 #define PF_TABLE_STATS_ASSERT() mtx_assert(&pf_table_stats_lock, MA_OWNED)
441
442 extern struct sx pf_end_lock;
443
444 #define PF_MODVER 1
445 #define PFLOG_MODVER 1
446 #define PFSYNC_MODVER 1
447
448 #define PFLOG_MINVER 1
449 #define PFLOG_PREFVER PFLOG_MODVER
450 #define PFLOG_MAXVER 1
451 #define PFSYNC_MINVER 1
452 #define PFSYNC_PREFVER PFSYNC_MODVER
453 #define PFSYNC_MAXVER 1
454
455 #ifdef INET
456 #ifndef INET6
457 #define PF_INET_ONLY
458 #endif /* ! INET6 */
459 #endif /* INET */
460
461 #ifdef INET6
462 #ifndef INET
463 #define PF_INET6_ONLY
464 #endif /* ! INET */
465 #endif /* INET6 */
466
467 #ifdef INET
468 #ifdef INET6
469 #define PF_INET_INET6
470 #endif /* INET6 */
471 #endif /* INET */
472
473 #else
474
475 #define PF_INET_INET6
476
477 #endif /* _KERNEL */
478
479 /* Both IPv4 and IPv6 */
480 #ifdef PF_INET_INET6
481
482 #define PF_AEQ(a, b, c) \
483 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \
484 (c == AF_INET6 && (a)->addr32[3] == (b)->addr32[3] && \
485 (a)->addr32[2] == (b)->addr32[2] && \
486 (a)->addr32[1] == (b)->addr32[1] && \
487 (a)->addr32[0] == (b)->addr32[0])) \
488
489 #define PF_ANEQ(a, b, c) \
490 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \
491 (c == AF_INET6 && ((a)->addr32[0] != (b)->addr32[0] || \
492 (a)->addr32[1] != (b)->addr32[1] || \
493 (a)->addr32[2] != (b)->addr32[2] || \
494 (a)->addr32[3] != (b)->addr32[3]))) \
495
496 #define PF_AZERO(a, c) \
497 ((c == AF_INET && !(a)->addr32[0]) || \
498 (c == AF_INET6 && !(a)->addr32[0] && !(a)->addr32[1] && \
499 !(a)->addr32[2] && !(a)->addr32[3] )) \
500
501 #define PF_MATCHA(n, a, m, b, f) \
502 pf_match_addr(n, a, m, b, f)
503
504 #define PF_ACPY(a, b, f) \
505 pf_addrcpy(a, b, f)
506
507 #define PF_AINC(a, f) \
508 pf_addr_inc(a, f)
509
510 #define PF_POOLMASK(a, b, c, d, f) \
511 pf_poolmask(a, b, c, d, f)
512
513 #else
514
515 /* Just IPv6 */
516
517 #ifdef PF_INET6_ONLY
518
519 #define PF_AEQ(a, b, c) \
520 ((a)->addr32[3] == (b)->addr32[3] && \
521 (a)->addr32[2] == (b)->addr32[2] && \
522 (a)->addr32[1] == (b)->addr32[1] && \
523 (a)->addr32[0] == (b)->addr32[0]) \
524
525 #define PF_ANEQ(a, b, c) \
526 ((a)->addr32[3] != (b)->addr32[3] || \
527 (a)->addr32[2] != (b)->addr32[2] || \
528 (a)->addr32[1] != (b)->addr32[1] || \
529 (a)->addr32[0] != (b)->addr32[0]) \
530
531 #define PF_AZERO(a, c) \
532 (!(a)->addr32[0] && \
533 !(a)->addr32[1] && \
534 !(a)->addr32[2] && \
535 !(a)->addr32[3] ) \
536
537 #define PF_MATCHA(n, a, m, b, f) \
538 pf_match_addr(n, a, m, b, f)
539
540 #define PF_ACPY(a, b, f) \
541 pf_addrcpy(a, b, f)
542
543 #define PF_AINC(a, f) \
544 pf_addr_inc(a, f)
545
546 #define PF_POOLMASK(a, b, c, d, f) \
547 pf_poolmask(a, b, c, d, f)
548
549 #else
550
551 /* Just IPv4 */
552 #ifdef PF_INET_ONLY
553
554 #define PF_AEQ(a, b, c) \
555 ((a)->addr32[0] == (b)->addr32[0])
556
557 #define PF_ANEQ(a, b, c) \
558 ((a)->addr32[0] != (b)->addr32[0])
559
560 #define PF_AZERO(a, c) \
561 (!(a)->addr32[0])
562
563 #define PF_MATCHA(n, a, m, b, f) \
564 pf_match_addr(n, a, m, b, f)
565
566 #define PF_ACPY(a, b, f) \
567 (a)->v4.s_addr = (b)->v4.s_addr
568
569 #define PF_AINC(a, f) \
570 do { \
571 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \
572 } while (0)
573
574 #define PF_POOLMASK(a, b, c, d, f) \
575 do { \
576 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \
577 (((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \
578 } while (0)
579
580 #endif /* PF_INET_ONLY */
581 #endif /* PF_INET6_ONLY */
582 #endif /* PF_INET_INET6 */
583
584 /*
585 * XXX callers not FIB-aware in our version of pf yet.
586 * OpenBSD fixed it later it seems, 2010/05/07 13:33:16 claudio.
587 */
588 #define PF_MISMATCHAW(aw, x, af, neg, ifp, rtid) \
589 ( \
590 (((aw)->type == PF_ADDR_NOROUTE && \
591 pf_routable((x), (af), NULL, (rtid))) || \
592 (((aw)->type == PF_ADDR_URPFFAILED && (ifp) != NULL && \
593 pf_routable((x), (af), (ifp), (rtid))) || \
594 ((aw)->type == PF_ADDR_TABLE && \
595 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \
596 ((aw)->type == PF_ADDR_DYNIFTL && \
597 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \
598 ((aw)->type == PF_ADDR_RANGE && \
599 !pf_match_addr_range(&(aw)->v.a.addr, \
600 &(aw)->v.a.mask, (x), (af))) || \
601 ((aw)->type == PF_ADDR_ADDRMASK && \
602 !PF_AZERO(&(aw)->v.a.mask, (af)) && \
603 !PF_MATCHA(0, &(aw)->v.a.addr, \
604 &(aw)->v.a.mask, (x), (af))))) != \
605 (neg) \
606 )
607
608 #define PF_ALGNMNT(off) (((off) % 2) == 0)
609
610 #ifdef _KERNEL
611
612 struct pf_kpooladdr {
613 struct pf_addr_wrap addr;
614 TAILQ_ENTRY(pf_kpooladdr) entries;
615 char ifname[IFNAMSIZ];
616 struct pfi_kkif *kif;
617 };
618
619 TAILQ_HEAD(pf_kpalist, pf_kpooladdr);
620
621 struct pf_kpool {
622 struct mtx mtx;
623 struct pf_kpalist list;
624 struct pf_kpooladdr *cur;
625 struct pf_poolhashkey key;
626 struct pf_addr counter;
627 struct pf_mape_portset mape;
628 int tblidx;
629 u_int16_t proxy_port[2];
630 u_int8_t opts;
631 };
632
633 struct pf_rule_actions {
634 int32_t rtableid;
635 uint16_t qid;
636 uint16_t pqid;
637 uint16_t max_mss;
638 uint8_t log;
639 uint8_t set_tos;
640 uint8_t min_ttl;
641 uint16_t dnpipe;
642 uint16_t dnrpipe; /* Reverse direction pipe */
643 uint32_t flags;
644 uint8_t set_prio[2];
645 };
646
647 union pf_keth_rule_ptr {
648 struct pf_keth_rule *ptr;
649 uint32_t nr;
650 };
651
652 struct pf_keth_rule_addr {
653 uint8_t addr[ETHER_ADDR_LEN];
654 uint8_t mask[ETHER_ADDR_LEN];
655 bool neg;
656 uint8_t isset;
657 };
658
659 struct pf_keth_anchor;
660
661 TAILQ_HEAD(pf_keth_ruleq, pf_keth_rule);
662
663 struct pf_keth_ruleset {
664 struct pf_keth_ruleq rules[2];
665 struct pf_keth_rules {
666 struct pf_keth_ruleq *rules;
667 int open;
668 uint32_t ticket;
669 } active, inactive;
670 struct epoch_context epoch_ctx;
671 struct vnet *vnet;
672 struct pf_keth_anchor *anchor;
673 };
674
675 RB_HEAD(pf_keth_anchor_global, pf_keth_anchor);
676 RB_HEAD(pf_keth_anchor_node, pf_keth_anchor);
677 struct pf_keth_anchor {
678 RB_ENTRY(pf_keth_anchor) entry_node;
679 RB_ENTRY(pf_keth_anchor) entry_global;
680 struct pf_keth_anchor *parent;
681 struct pf_keth_anchor_node children;
682 char name[PF_ANCHOR_NAME_SIZE];
683 char path[MAXPATHLEN];
684 struct pf_keth_ruleset ruleset;
685 int refcnt; /* anchor rules */
686 uint8_t anchor_relative;
687 uint8_t anchor_wildcard;
688 };
689 RB_PROTOTYPE(pf_keth_anchor_node, pf_keth_anchor, entry_node,
690 pf_keth_anchor_compare);
691 RB_PROTOTYPE(pf_keth_anchor_global, pf_keth_anchor, entry_global,
692 pf_keth_anchor_compare);
693
694 struct pf_keth_rule {
695 #define PFE_SKIP_IFP 0
696 #define PFE_SKIP_DIR 1
697 #define PFE_SKIP_PROTO 2
698 #define PFE_SKIP_SRC_ADDR 3
699 #define PFE_SKIP_DST_ADDR 4
700 #define PFE_SKIP_SRC_IP_ADDR 5
701 #define PFE_SKIP_DST_IP_ADDR 6
702 #define PFE_SKIP_COUNT 7
703 union pf_keth_rule_ptr skip[PFE_SKIP_COUNT];
704
705 TAILQ_ENTRY(pf_keth_rule) entries;
706
707 struct pf_keth_anchor *anchor;
708 u_int8_t anchor_relative;
709 u_int8_t anchor_wildcard;
710
711 uint32_t nr;
712
713 bool quick;
714
715 /* Filter */
716 char ifname[IFNAMSIZ];
717 struct pfi_kkif *kif;
718 bool ifnot;
719 uint8_t direction;
720 uint16_t proto;
721 struct pf_keth_rule_addr src, dst;
722 struct pf_rule_addr ipsrc, ipdst;
723 char match_tagname[PF_TAG_NAME_SIZE];
724 uint16_t match_tag;
725 bool match_tag_not;
726
727
728 /* Stats */
729 counter_u64_t evaluations;
730 counter_u64_t packets[2];
731 counter_u64_t bytes[2];
732 time_t *timestamp;
733
734 /* Action */
735 char qname[PF_QNAME_SIZE];
736 int qid;
737 char tagname[PF_TAG_NAME_SIZE];
738 uint16_t tag;
739 char bridge_to_name[IFNAMSIZ];
740 struct pfi_kkif *bridge_to;
741 uint8_t action;
742 uint16_t dnpipe;
743 uint32_t dnflags;
744
745 char label[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE];
746 uint32_t ridentifier;
747 };
748
749 union pf_krule_ptr {
750 struct pf_krule *ptr;
751 u_int32_t nr;
752 };
753
754 RB_HEAD(pf_krule_global, pf_krule);
755 RB_PROTOTYPE(pf_krule_global, pf_krule, entry_global, pf_krule_compare);
756
757 struct pf_krule {
758 struct pf_rule_addr src;
759 struct pf_rule_addr dst;
760 union pf_krule_ptr skip[PF_SKIP_COUNT];
761 char label[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE];
762 uint32_t ridentifier;
763 char ifname[IFNAMSIZ];
764 char qname[PF_QNAME_SIZE];
765 char pqname[PF_QNAME_SIZE];
766 char tagname[PF_TAG_NAME_SIZE];
767 char match_tagname[PF_TAG_NAME_SIZE];
768
769 char overload_tblname[PF_TABLE_NAME_SIZE];
770
771 TAILQ_ENTRY(pf_krule) entries;
772 struct pf_kpool rpool;
773
774 struct pf_counter_u64 evaluations;
775 struct pf_counter_u64 packets[2];
776 struct pf_counter_u64 bytes[2];
777 time_t *timestamp;
778
779 struct pfi_kkif *kif;
780 struct pf_kanchor *anchor;
781 struct pfr_ktable *overload_tbl;
782
783 pf_osfp_t os_fingerprint;
784
785 int32_t rtableid;
786 u_int32_t timeout[PFTM_MAX];
787 u_int32_t max_states;
788 u_int32_t max_src_nodes;
789 u_int32_t max_src_states;
790 u_int32_t max_src_conn;
791 struct {
792 u_int32_t limit;
793 u_int32_t seconds;
794 } max_src_conn_rate;
795 u_int16_t qid;
796 u_int16_t pqid;
797 u_int16_t dnpipe;
798 u_int16_t dnrpipe;
799 u_int32_t free_flags;
800 u_int32_t nr;
801 u_int32_t prob;
802 uid_t cuid;
803 pid_t cpid;
804
805 counter_u64_t states_cur;
806 counter_u64_t states_tot;
807 counter_u64_t src_nodes;
808
809 u_int16_t return_icmp;
810 u_int16_t return_icmp6;
811 u_int16_t max_mss;
812 u_int16_t tag;
813 u_int16_t match_tag;
814 u_int16_t scrub_flags;
815
816 struct pf_rule_uid uid;
817 struct pf_rule_gid gid;
818
819 u_int32_t rule_flag;
820 uint32_t rule_ref;
821 u_int8_t action;
822 u_int8_t direction;
823 u_int8_t log;
824 u_int8_t logif;
825 u_int8_t quick;
826 u_int8_t ifnot;
827 u_int8_t match_tag_not;
828 u_int8_t natpass;
829
830 u_int8_t keep_state;
831 sa_family_t af;
832 u_int8_t proto;
833 u_int8_t type;
834 u_int8_t code;
835 u_int8_t flags;
836 u_int8_t flagset;
837 u_int8_t min_ttl;
838 u_int8_t allow_opts;
839 u_int8_t rt;
840 u_int8_t return_ttl;
841 u_int8_t tos;
842 u_int8_t set_tos;
843 u_int8_t anchor_relative;
844 u_int8_t anchor_wildcard;
845
846 u_int8_t flush;
847 u_int8_t prio;
848 u_int8_t set_prio[2];
849
850 struct {
851 struct pf_addr addr;
852 u_int16_t port;
853 } divert;
854 u_int8_t md5sum[PF_MD5_DIGEST_LENGTH];
855 RB_ENTRY(pf_krule) entry_global;
856
857 #ifdef PF_WANT_32_TO_64_COUNTER
858 LIST_ENTRY(pf_krule) allrulelist;
859 bool allrulelinked;
860 #endif
861 };
862
863 struct pf_krule_item {
864 SLIST_ENTRY(pf_krule_item) entry;
865 struct pf_krule *r;
866 };
867
868 SLIST_HEAD(pf_krule_slist, pf_krule_item);
869
870 struct pf_ksrc_node {
871 LIST_ENTRY(pf_ksrc_node) entry;
872 struct pf_addr addr;
873 struct pf_addr raddr;
874 struct pf_krule_slist match_rules;
875 union pf_krule_ptr rule;
876 struct pfi_kkif *rkif;
877 counter_u64_t bytes[2];
878 counter_u64_t packets[2];
879 u_int32_t states;
880 u_int32_t conn;
881 struct pf_threshold conn_rate;
882 u_int32_t creation;
883 u_int32_t expire;
884 sa_family_t af;
885 u_int8_t ruletype;
886 struct mtx *lock;
887 };
888 #endif
889
890 struct pf_state_scrub {
891 struct timeval pfss_last; /* time received last packet */
892 u_int32_t pfss_tsecr; /* last echoed timestamp */
893 u_int32_t pfss_tsval; /* largest timestamp */
894 u_int32_t pfss_tsval0; /* original timestamp */
895 u_int16_t pfss_flags;
896 #define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */
897 #define PFSS_PAWS 0x0010 /* stricter PAWS checks */
898 #define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */
899 #define PFSS_DATA_TS 0x0040 /* timestamp on data packets */
900 #define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */
901 u_int8_t pfss_ttl; /* stashed TTL */
902 u_int8_t pad;
903 union {
904 u_int32_t pfss_ts_mod; /* timestamp modulation */
905 u_int32_t pfss_v_tag; /* SCTP verification tag */
906 };
907 };
908
909 struct pf_state_host {
910 struct pf_addr addr;
911 u_int16_t port;
912 u_int16_t pad;
913 };
914
915 struct pf_state_peer {
916 struct pf_state_scrub *scrub; /* state is scrubbed */
917 u_int32_t seqlo; /* Max sequence number sent */
918 u_int32_t seqhi; /* Max the other end ACKd + win */
919 u_int32_t seqdiff; /* Sequence number modulator */
920 u_int16_t max_win; /* largest window (pre scaling) */
921 u_int16_t mss; /* Maximum segment size option */
922 u_int8_t state; /* active state level */
923 u_int8_t wscale; /* window scaling factor */
924 u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */
925 u_int8_t pad[1];
926 };
927
928 /* Keep synced with struct pf_state_key. */
929 struct pf_state_key_cmp {
930 struct pf_addr addr[2];
931 u_int16_t port[2];
932 sa_family_t af;
933 u_int8_t proto;
934 u_int8_t pad[2];
935 };
936
937 struct pf_state_key {
938 struct pf_addr addr[2];
939 u_int16_t port[2];
940 sa_family_t af;
941 u_int8_t proto;
942 u_int8_t pad[2];
943
944 LIST_ENTRY(pf_state_key) entry;
945 TAILQ_HEAD(, pf_kstate) states[2];
946 };
947
948 /* Keep synced with struct pf_kstate. */
949 struct pf_state_cmp {
950 u_int64_t id;
951 u_int32_t creatorid;
952 u_int8_t direction;
953 u_int8_t pad[3];
954 };
955
956 struct pf_state_scrub_export {
957 uint16_t pfss_flags;
958 uint8_t pfss_ttl; /* stashed TTL */
959 #define PF_SCRUB_FLAG_VALID 0x01
960 uint8_t scrub_flag;
961 uint32_t pfss_ts_mod; /* timestamp modulation */
962 };
963
964 struct pf_state_key_export {
965 struct pf_addr addr[2];
966 uint16_t port[2];
967 };
968
969 struct pf_state_peer_export {
970 struct pf_state_scrub_export scrub; /* state is scrubbed */
971 uint32_t seqlo; /* Max sequence number sent */
972 uint32_t seqhi; /* Max the other end ACKd + win */
973 uint32_t seqdiff; /* Sequence number modulator */
974 uint16_t max_win; /* largest window (pre scaling) */
975 uint16_t mss; /* Maximum segment size option */
976 uint8_t state; /* active state level */
977 uint8_t wscale; /* window scaling factor */
978 uint8_t dummy[6];
979 };
980 _Static_assert(sizeof(struct pf_state_peer_export) == 32, "size incorrect");
981
982 struct pf_state_export {
983 uint64_t version;
984 #define PF_STATE_VERSION 20230404
985 uint64_t id;
986 char ifname[IFNAMSIZ];
987 char orig_ifname[IFNAMSIZ];
988 struct pf_state_key_export key[2];
989 struct pf_state_peer_export src;
990 struct pf_state_peer_export dst;
991 struct pf_addr rt_addr;
992 uint32_t rule;
993 uint32_t anchor;
994 uint32_t nat_rule;
995 uint32_t creation;
996 uint32_t expire;
997 uint32_t spare0;
998 uint64_t packets[2];
999 uint64_t bytes[2];
1000 uint32_t creatorid;
1001 uint32_t spare1;
1002 sa_family_t af;
1003 uint8_t proto;
1004 uint8_t direction;
1005 uint8_t log;
1006 uint8_t state_flags_compat;
1007 uint8_t timeout;
1008 uint8_t sync_flags;
1009 uint8_t updates;
1010 uint16_t state_flags;
1011 uint16_t qid;
1012 uint16_t pqid;
1013 uint16_t dnpipe;
1014 uint16_t dnrpipe;
1015 int32_t rtableid;
1016 uint8_t min_ttl;
1017 uint8_t set_tos;
1018 uint16_t max_mss;
1019 uint8_t set_prio[2];
1020 uint8_t rt;
1021 char rt_ifname[IFNAMSIZ];
1022
1023 uint8_t spare[72];
1024 };
1025 _Static_assert(sizeof(struct pf_state_export) == 384, "size incorrect");
1026
1027 #ifdef _KERNEL
1028 struct pf_kstate {
1029 /*
1030 * Area shared with pf_state_cmp
1031 */
1032 u_int64_t id;
1033 u_int32_t creatorid;
1034 u_int8_t direction;
1035 u_int8_t pad[3];
1036 /*
1037 * end of the area
1038 */
1039
1040 u_int16_t state_flags;
1041 u_int8_t timeout;
1042 u_int8_t sync_state; /* PFSYNC_S_x */
1043 u_int8_t sync_updates; /* XXX */
1044 u_int refs;
1045 struct mtx *lock;
1046 TAILQ_ENTRY(pf_kstate) sync_list;
1047 TAILQ_ENTRY(pf_kstate) key_list[2];
1048 LIST_ENTRY(pf_kstate) entry;
1049 struct pf_state_peer src;
1050 struct pf_state_peer dst;
1051 struct pf_krule_slist match_rules;
1052 union pf_krule_ptr rule;
1053 union pf_krule_ptr anchor;
1054 union pf_krule_ptr nat_rule;
1055 struct pf_addr rt_addr;
1056 struct pf_state_key *key[2]; /* addresses stack and wire */
1057 struct pfi_kkif *kif;
1058 struct pfi_kkif *orig_kif; /* The real kif, even if we're a floating state (i.e. if == V_pfi_all). */
1059 struct pfi_kkif *rt_kif;
1060 struct pf_ksrc_node *src_node;
1061 struct pf_ksrc_node *nat_src_node;
1062 u_int64_t packets[2];
1063 u_int64_t bytes[2];
1064 u_int64_t creation;
1065 u_int64_t expire;
1066 u_int32_t pfsync_time;
1067 struct pf_rule_actions act;
1068 u_int16_t tag;
1069 u_int8_t rt;
1070 u_int16_t if_index_in;
1071 u_int16_t if_index_out;
1072 };
1073
1074 /*
1075 * Size <= fits 11 objects per page on LP64. Try to not grow the struct beyond that.
1076 */
1077 _Static_assert(sizeof(struct pf_kstate) <= 372, "pf_kstate size crosses 372 bytes");
1078 #endif
1079
1080 /*
1081 * Unified state structures for pulling states out of the kernel
1082 * used by pfsync(4) and the pf(4) ioctl.
1083 */
1084 struct pfsync_state_scrub {
1085 u_int16_t pfss_flags;
1086 u_int8_t pfss_ttl; /* stashed TTL */
1087 #define PFSYNC_SCRUB_FLAG_VALID 0x01
1088 u_int8_t scrub_flag;
1089 u_int32_t pfss_ts_mod; /* timestamp modulation */
1090 } __packed;
1091
1092 struct pfsync_state_peer {
1093 struct pfsync_state_scrub scrub; /* state is scrubbed */
1094 u_int32_t seqlo; /* Max sequence number sent */
1095 u_int32_t seqhi; /* Max the other end ACKd + win */
1096 u_int32_t seqdiff; /* Sequence number modulator */
1097 u_int16_t max_win; /* largest window (pre scaling) */
1098 u_int16_t mss; /* Maximum segment size option */
1099 u_int8_t state; /* active state level */
1100 u_int8_t wscale; /* window scaling factor */
1101 u_int8_t pad[6];
1102 } __packed;
1103
1104 struct pfsync_state_key {
1105 struct pf_addr addr[2];
1106 u_int16_t port[2];
1107 };
1108
1109 struct pfsync_state_1301 {
1110 u_int64_t id;
1111 char ifname[IFNAMSIZ];
1112 struct pfsync_state_key key[2];
1113 struct pfsync_state_peer src;
1114 struct pfsync_state_peer dst;
1115 struct pf_addr rt_addr;
1116 u_int32_t rule;
1117 u_int32_t anchor;
1118 u_int32_t nat_rule;
1119 u_int32_t creation;
1120 u_int32_t expire;
1121 u_int32_t packets[2][2];
1122 u_int32_t bytes[2][2];
1123 u_int32_t creatorid;
1124 sa_family_t af;
1125 u_int8_t proto;
1126 u_int8_t direction;
1127 u_int8_t __spare[2];
1128 u_int8_t log;
1129 u_int8_t state_flags;
1130 u_int8_t timeout;
1131 u_int8_t sync_flags;
1132 u_int8_t updates;
1133 } __packed;
1134
1135 struct pfsync_state_1400 {
1136 /* The beginning of the struct is compatible with previous versions */
1137 u_int64_t id;
1138 char ifname[IFNAMSIZ];
1139 struct pfsync_state_key key[2];
1140 struct pfsync_state_peer src;
1141 struct pfsync_state_peer dst;
1142 struct pf_addr rt_addr;
1143 u_int32_t rule;
1144 u_int32_t anchor;
1145 u_int32_t nat_rule;
1146 u_int32_t creation;
1147 u_int32_t expire;
1148 u_int32_t packets[2][2];
1149 u_int32_t bytes[2][2];
1150 u_int32_t creatorid;
1151 sa_family_t af;
1152 u_int8_t proto;
1153 u_int8_t direction;
1154 u_int16_t state_flags;
1155 u_int8_t log;
1156 u_int8_t __spare;
1157 u_int8_t timeout;
1158 u_int8_t sync_flags;
1159 u_int8_t updates;
1160 /* The rest is not */
1161 u_int16_t qid;
1162 u_int16_t pqid;
1163 u_int16_t dnpipe;
1164 u_int16_t dnrpipe;
1165 int32_t rtableid;
1166 u_int8_t min_ttl;
1167 u_int8_t set_tos;
1168 u_int16_t max_mss;
1169 u_int8_t set_prio[2];
1170 u_int8_t rt;
1171 char rt_ifname[IFNAMSIZ];
1172
1173 } __packed;
1174
1175 union pfsync_state_union {
1176 struct pfsync_state_1301 pfs_1301;
1177 struct pfsync_state_1400 pfs_1400;
1178 } __packed;
1179
1180 #ifdef _KERNEL
1181 /* pfsync */
1182 typedef int pfsync_state_import_t(union pfsync_state_union *, int, int);
1183 typedef void pfsync_insert_state_t(struct pf_kstate *);
1184 typedef void pfsync_update_state_t(struct pf_kstate *);
1185 typedef void pfsync_delete_state_t(struct pf_kstate *);
1186 typedef void pfsync_clear_states_t(u_int32_t, const char *);
1187 typedef int pfsync_defer_t(struct pf_kstate *, struct mbuf *);
1188 typedef void pfsync_detach_ifnet_t(struct ifnet *);
1189 typedef void pflow_export_state_t(const struct pf_kstate *);
1190
1191 VNET_DECLARE(pfsync_state_import_t *, pfsync_state_import_ptr);
1192 #define V_pfsync_state_import_ptr VNET(pfsync_state_import_ptr)
1193 VNET_DECLARE(pfsync_insert_state_t *, pfsync_insert_state_ptr);
1194 #define V_pfsync_insert_state_ptr VNET(pfsync_insert_state_ptr)
1195 VNET_DECLARE(pfsync_update_state_t *, pfsync_update_state_ptr);
1196 #define V_pfsync_update_state_ptr VNET(pfsync_update_state_ptr)
1197 VNET_DECLARE(pfsync_delete_state_t *, pfsync_delete_state_ptr);
1198 #define V_pfsync_delete_state_ptr VNET(pfsync_delete_state_ptr)
1199 VNET_DECLARE(pfsync_clear_states_t *, pfsync_clear_states_ptr);
1200 #define V_pfsync_clear_states_ptr VNET(pfsync_clear_states_ptr)
1201 VNET_DECLARE(pfsync_defer_t *, pfsync_defer_ptr);
1202 #define V_pfsync_defer_ptr VNET(pfsync_defer_ptr)
1203 VNET_DECLARE(pflow_export_state_t *, pflow_export_state_ptr);
1204 #define V_pflow_export_state_ptr VNET(pflow_export_state_ptr)
1205 extern pfsync_detach_ifnet_t *pfsync_detach_ifnet_ptr;
1206
1207 void pfsync_state_export(union pfsync_state_union *,
1208 struct pf_kstate *, int);
1209 void pf_state_export(struct pf_state_export *,
1210 struct pf_kstate *);
1211
1212 /* pflog */
1213 struct pf_kruleset;
1214 struct pf_pdesc;
1215 typedef int pflog_packet_t(struct pfi_kkif *, struct mbuf *, sa_family_t,
1216 uint8_t, u_int8_t, struct pf_krule *, struct pf_krule *, struct pf_kruleset *,
1217 struct pf_pdesc *, int);
1218 extern pflog_packet_t *pflog_packet_ptr;
1219
1220 #endif /* _KERNEL */
1221
1222 #define PFSYNC_FLAG_SRCNODE 0x04
1223 #define PFSYNC_FLAG_NATSRCNODE 0x08
1224
1225 /* for copies to/from network byte order */
1226 /* ioctl interface also uses network byte order */
1227 #define pf_state_peer_hton(s,d) do { \
1228 (d)->seqlo = htonl((s)->seqlo); \
1229 (d)->seqhi = htonl((s)->seqhi); \
1230 (d)->seqdiff = htonl((s)->seqdiff); \
1231 (d)->max_win = htons((s)->max_win); \
1232 (d)->mss = htons((s)->mss); \
1233 (d)->state = (s)->state; \
1234 (d)->wscale = (s)->wscale; \
1235 if ((s)->scrub) { \
1236 (d)->scrub.pfss_flags = \
1237 htons((s)->scrub->pfss_flags & PFSS_TIMESTAMP); \
1238 (d)->scrub.pfss_ttl = (s)->scrub->pfss_ttl; \
1239 (d)->scrub.pfss_ts_mod = htonl((s)->scrub->pfss_ts_mod);\
1240 (d)->scrub.scrub_flag = PFSYNC_SCRUB_FLAG_VALID; \
1241 } \
1242 } while (0)
1243
1244 #define pf_state_peer_ntoh(s,d) do { \
1245 (d)->seqlo = ntohl((s)->seqlo); \
1246 (d)->seqhi = ntohl((s)->seqhi); \
1247 (d)->seqdiff = ntohl((s)->seqdiff); \
1248 (d)->max_win = ntohs((s)->max_win); \
1249 (d)->mss = ntohs((s)->mss); \
1250 (d)->state = (s)->state; \
1251 (d)->wscale = (s)->wscale; \
1252 if ((s)->scrub.scrub_flag == PFSYNC_SCRUB_FLAG_VALID && \
1253 (d)->scrub != NULL) { \
1254 (d)->scrub->pfss_flags = \
1255 ntohs((s)->scrub.pfss_flags) & PFSS_TIMESTAMP; \
1256 (d)->scrub->pfss_ttl = (s)->scrub.pfss_ttl; \
1257 (d)->scrub->pfss_ts_mod = ntohl((s)->scrub.pfss_ts_mod);\
1258 } \
1259 } while (0)
1260
1261 #define pf_state_counter_hton(s,d) do { \
1262 d[0] = htonl((s>>32)&0xffffffff); \
1263 d[1] = htonl(s&0xffffffff); \
1264 } while (0)
1265
1266 #define pf_state_counter_from_pfsync(s) \
1267 (((u_int64_t)(s[0])<<32) | (u_int64_t)(s[1]))
1268
1269 #define pf_state_counter_ntoh(s,d) do { \
1270 d = ntohl(s[0]); \
1271 d = d<<32; \
1272 d += ntohl(s[1]); \
1273 } while (0)
1274
1275 TAILQ_HEAD(pf_krulequeue, pf_krule);
1276
1277 struct pf_kanchor;
1278
1279 struct pf_kruleset {
1280 struct {
1281 struct pf_krulequeue queues[2];
1282 struct {
1283 struct pf_krulequeue *ptr;
1284 struct pf_krule **ptr_array;
1285 u_int32_t rcount;
1286 u_int32_t ticket;
1287 int open;
1288 struct pf_krule_global *tree;
1289 } active, inactive;
1290 } rules[PF_RULESET_MAX];
1291 struct pf_kanchor *anchor;
1292 u_int32_t tticket;
1293 int tables;
1294 int topen;
1295 };
1296
1297 RB_HEAD(pf_kanchor_global, pf_kanchor);
1298 RB_HEAD(pf_kanchor_node, pf_kanchor);
1299 struct pf_kanchor {
1300 RB_ENTRY(pf_kanchor) entry_global;
1301 RB_ENTRY(pf_kanchor) entry_node;
1302 struct pf_kanchor *parent;
1303 struct pf_kanchor_node children;
1304 char name[PF_ANCHOR_NAME_SIZE];
1305 char path[MAXPATHLEN];
1306 struct pf_kruleset ruleset;
1307 int refcnt; /* anchor rules */
1308 };
1309 RB_PROTOTYPE(pf_kanchor_global, pf_kanchor, entry_global, pf_anchor_compare);
1310 RB_PROTOTYPE(pf_kanchor_node, pf_kanchor, entry_node, pf_kanchor_compare);
1311
1312 #define PF_RESERVED_ANCHOR "_pf"
1313
1314 #define PFR_TFLAG_PERSIST 0x00000001
1315 #define PFR_TFLAG_CONST 0x00000002
1316 #define PFR_TFLAG_ACTIVE 0x00000004
1317 #define PFR_TFLAG_INACTIVE 0x00000008
1318 #define PFR_TFLAG_REFERENCED 0x00000010
1319 #define PFR_TFLAG_REFDANCHOR 0x00000020
1320 #define PFR_TFLAG_COUNTERS 0x00000040
1321 /* Adjust masks below when adding flags. */
1322 #define PFR_TFLAG_USRMASK (PFR_TFLAG_PERSIST | \
1323 PFR_TFLAG_CONST | \
1324 PFR_TFLAG_COUNTERS)
1325 #define PFR_TFLAG_SETMASK (PFR_TFLAG_ACTIVE | \
1326 PFR_TFLAG_INACTIVE | \
1327 PFR_TFLAG_REFERENCED | \
1328 PFR_TFLAG_REFDANCHOR)
1329 #define PFR_TFLAG_ALLMASK (PFR_TFLAG_PERSIST | \
1330 PFR_TFLAG_CONST | \
1331 PFR_TFLAG_ACTIVE | \
1332 PFR_TFLAG_INACTIVE | \
1333 PFR_TFLAG_REFERENCED | \
1334 PFR_TFLAG_REFDANCHOR | \
1335 PFR_TFLAG_COUNTERS)
1336
1337 struct pf_kanchor_stackframe;
1338 struct pf_keth_anchor_stackframe;
1339
1340 struct pfr_table {
1341 char pfrt_anchor[MAXPATHLEN];
1342 char pfrt_name[PF_TABLE_NAME_SIZE];
1343 u_int32_t pfrt_flags;
1344 u_int8_t pfrt_fback;
1345 };
1346
1347 enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED,
1348 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE,
1349 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_NOCOUNT, PFR_FB_MAX };
1350
1351 struct pfr_addr {
1352 union {
1353 struct in_addr _pfra_ip4addr;
1354 struct in6_addr _pfra_ip6addr;
1355 } pfra_u;
1356 u_int8_t pfra_af;
1357 u_int8_t pfra_net;
1358 u_int8_t pfra_not;
1359 u_int8_t pfra_fback;
1360 };
1361 #define pfra_ip4addr pfra_u._pfra_ip4addr
1362 #define pfra_ip6addr pfra_u._pfra_ip6addr
1363
1364 enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX };
1365 enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX };
1366 enum { PFR_TYPE_PACKETS, PFR_TYPE_BYTES, PFR_TYPE_MAX };
1367 #define PFR_NUM_COUNTERS (PFR_DIR_MAX * PFR_OP_ADDR_MAX * PFR_TYPE_MAX)
1368 #define PFR_OP_XPASS PFR_OP_ADDR_MAX
1369
1370 struct pfr_astats {
1371 struct pfr_addr pfras_a;
1372 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
1373 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
1374 long pfras_tzero;
1375 };
1376
1377 enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX };
1378
1379 struct pfr_tstats {
1380 struct pfr_table pfrts_t;
1381 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
1382 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
1383 u_int64_t pfrts_match;
1384 u_int64_t pfrts_nomatch;
1385 long pfrts_tzero;
1386 int pfrts_cnt;
1387 int pfrts_refcnt[PFR_REFCNT_MAX];
1388 };
1389
1390 #ifdef _KERNEL
1391
1392 struct pfr_kstate_counter {
1393 counter_u64_t pkc_pcpu;
1394 u_int64_t pkc_zero;
1395 };
1396
1397 static inline int
pfr_kstate_counter_init(struct pfr_kstate_counter * pfrc,int flags)1398 pfr_kstate_counter_init(struct pfr_kstate_counter *pfrc, int flags)
1399 {
1400
1401 pfrc->pkc_zero = 0;
1402 pfrc->pkc_pcpu = counter_u64_alloc(flags);
1403 if (pfrc->pkc_pcpu == NULL)
1404 return (ENOMEM);
1405 return (0);
1406 }
1407
1408 static inline void
pfr_kstate_counter_deinit(struct pfr_kstate_counter * pfrc)1409 pfr_kstate_counter_deinit(struct pfr_kstate_counter *pfrc)
1410 {
1411
1412 counter_u64_free(pfrc->pkc_pcpu);
1413 }
1414
1415 static inline u_int64_t
pfr_kstate_counter_fetch(struct pfr_kstate_counter * pfrc)1416 pfr_kstate_counter_fetch(struct pfr_kstate_counter *pfrc)
1417 {
1418 u_int64_t c;
1419
1420 c = counter_u64_fetch(pfrc->pkc_pcpu);
1421 c -= pfrc->pkc_zero;
1422 return (c);
1423 }
1424
1425 static inline void
pfr_kstate_counter_zero(struct pfr_kstate_counter * pfrc)1426 pfr_kstate_counter_zero(struct pfr_kstate_counter *pfrc)
1427 {
1428 u_int64_t c;
1429
1430 c = counter_u64_fetch(pfrc->pkc_pcpu);
1431 pfrc->pkc_zero = c;
1432 }
1433
1434 static inline void
pfr_kstate_counter_add(struct pfr_kstate_counter * pfrc,int64_t n)1435 pfr_kstate_counter_add(struct pfr_kstate_counter *pfrc, int64_t n)
1436 {
1437
1438 counter_u64_add(pfrc->pkc_pcpu, n);
1439 }
1440
1441 struct pfr_ktstats {
1442 struct pfr_table pfrts_t;
1443 struct pfr_kstate_counter pfrkts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
1444 struct pfr_kstate_counter pfrkts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
1445 struct pfr_kstate_counter pfrkts_match;
1446 struct pfr_kstate_counter pfrkts_nomatch;
1447 long pfrkts_tzero;
1448 int pfrkts_cnt;
1449 int pfrkts_refcnt[PFR_REFCNT_MAX];
1450 };
1451
1452 #endif /* _KERNEL */
1453
1454 #define pfrts_name pfrts_t.pfrt_name
1455 #define pfrts_flags pfrts_t.pfrt_flags
1456
1457 #ifndef _SOCKADDR_UNION_DEFINED
1458 #define _SOCKADDR_UNION_DEFINED
1459 union sockaddr_union {
1460 struct sockaddr sa;
1461 struct sockaddr_in sin;
1462 struct sockaddr_in6 sin6;
1463 };
1464 #endif /* _SOCKADDR_UNION_DEFINED */
1465
1466 struct pfr_kcounters {
1467 counter_u64_t pfrkc_counters;
1468 long pfrkc_tzero;
1469 };
1470 #define pfr_kentry_counter(kc, dir, op, t) \
1471 ((kc)->pfrkc_counters + \
1472 (dir) * PFR_OP_ADDR_MAX * PFR_TYPE_MAX + (op) * PFR_TYPE_MAX + (t))
1473
1474 #ifdef _KERNEL
1475 SLIST_HEAD(pfr_kentryworkq, pfr_kentry);
1476 struct pfr_kentry {
1477 struct radix_node pfrke_node[2];
1478 union sockaddr_union pfrke_sa;
1479 SLIST_ENTRY(pfr_kentry) pfrke_workq;
1480 struct pfr_kcounters pfrke_counters;
1481 u_int8_t pfrke_af;
1482 u_int8_t pfrke_net;
1483 u_int8_t pfrke_not;
1484 u_int8_t pfrke_mark;
1485 };
1486
1487 SLIST_HEAD(pfr_ktableworkq, pfr_ktable);
1488 RB_HEAD(pfr_ktablehead, pfr_ktable);
1489 struct pfr_ktable {
1490 struct pfr_ktstats pfrkt_kts;
1491 RB_ENTRY(pfr_ktable) pfrkt_tree;
1492 SLIST_ENTRY(pfr_ktable) pfrkt_workq;
1493 struct radix_node_head *pfrkt_ip4;
1494 struct radix_node_head *pfrkt_ip6;
1495 struct pfr_ktable *pfrkt_shadow;
1496 struct pfr_ktable *pfrkt_root;
1497 struct pf_kruleset *pfrkt_rs;
1498 long pfrkt_larg;
1499 int pfrkt_nflags;
1500 };
1501 #define pfrkt_t pfrkt_kts.pfrts_t
1502 #define pfrkt_name pfrkt_t.pfrt_name
1503 #define pfrkt_anchor pfrkt_t.pfrt_anchor
1504 #define pfrkt_ruleset pfrkt_t.pfrt_ruleset
1505 #define pfrkt_flags pfrkt_t.pfrt_flags
1506 #define pfrkt_cnt pfrkt_kts.pfrkts_cnt
1507 #define pfrkt_refcnt pfrkt_kts.pfrkts_refcnt
1508 #define pfrkt_packets pfrkt_kts.pfrkts_packets
1509 #define pfrkt_bytes pfrkt_kts.pfrkts_bytes
1510 #define pfrkt_match pfrkt_kts.pfrkts_match
1511 #define pfrkt_nomatch pfrkt_kts.pfrkts_nomatch
1512 #define pfrkt_tzero pfrkt_kts.pfrkts_tzero
1513 #endif
1514
1515 #ifdef _KERNEL
1516 struct pfi_kkif {
1517 char pfik_name[IFNAMSIZ];
1518 union {
1519 RB_ENTRY(pfi_kkif) _pfik_tree;
1520 LIST_ENTRY(pfi_kkif) _pfik_list;
1521 } _pfik_glue;
1522 #define pfik_tree _pfik_glue._pfik_tree
1523 #define pfik_list _pfik_glue._pfik_list
1524 struct pf_counter_u64 pfik_packets[2][2][2];
1525 struct pf_counter_u64 pfik_bytes[2][2][2];
1526 u_int32_t pfik_tzero;
1527 u_int pfik_flags;
1528 struct ifnet *pfik_ifp;
1529 struct ifg_group *pfik_group;
1530 u_int pfik_rulerefs;
1531 TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs;
1532 #ifdef PF_WANT_32_TO_64_COUNTER
1533 LIST_ENTRY(pfi_kkif) pfik_allkiflist;
1534 #endif
1535 };
1536 #endif
1537
1538 #define PFI_IFLAG_REFS 0x0001 /* has state references */
1539 #define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */
1540
1541 #ifdef _KERNEL
1542 struct pf_sctp_multihome_job;
1543 TAILQ_HEAD(pf_sctp_multihome_jobs, pf_sctp_multihome_job);
1544
1545 struct pf_pdesc {
1546 struct {
1547 int done;
1548 uid_t uid;
1549 gid_t gid;
1550 } lookup;
1551 u_int64_t tot_len; /* Make Mickey money */
1552 union pf_headers {
1553 struct tcphdr tcp;
1554 struct udphdr udp;
1555 struct sctphdr sctp;
1556 struct icmp icmp;
1557 #ifdef INET6
1558 struct icmp6_hdr icmp6;
1559 #endif /* INET6 */
1560 char any[0];
1561 } hdr;
1562
1563 struct pf_krule *nat_rule; /* nat/rdr rule applied to packet */
1564 struct pf_addr *src; /* src address */
1565 struct pf_addr *dst; /* dst address */
1566 u_int16_t *sport;
1567 u_int16_t *dport;
1568 struct pf_mtag *pf_mtag;
1569 struct pf_rule_actions act;
1570
1571 u_int32_t p_len; /* total length of payload */
1572
1573 u_int16_t *ip_sum;
1574 u_int16_t *proto_sum;
1575 u_int16_t flags; /* Let SCRUB trigger behavior in
1576 * state code. Easier than tags */
1577 #define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */
1578 #define PFDESC_IP_REAS 0x0002 /* IP frags would've been reassembled */
1579 sa_family_t af;
1580 u_int8_t proto;
1581 u_int8_t tos;
1582 u_int8_t dir; /* direction */
1583 u_int8_t sidx; /* key index for source */
1584 u_int8_t didx; /* key index for destination */
1585 #define PFDESC_SCTP_INIT 0x0001
1586 #define PFDESC_SCTP_INIT_ACK 0x0002
1587 #define PFDESC_SCTP_COOKIE 0x0004
1588 #define PFDESC_SCTP_COOKIE_ACK 0x0008
1589 #define PFDESC_SCTP_ABORT 0x0010
1590 #define PFDESC_SCTP_SHUTDOWN 0x0020
1591 #define PFDESC_SCTP_SHUTDOWN_COMPLETE 0x0040
1592 #define PFDESC_SCTP_DATA 0x0080
1593 #define PFDESC_SCTP_ASCONF 0x0100
1594 #define PFDESC_SCTP_HEARTBEAT 0x0200
1595 #define PFDESC_SCTP_HEARTBEAT_ACK 0x0400
1596 #define PFDESC_SCTP_OTHER 0x0800
1597 #define PFDESC_SCTP_ADD_IP 0x1000
1598 u_int16_t sctp_flags;
1599 u_int32_t sctp_initiate_tag;
1600
1601 struct pf_sctp_multihome_jobs sctp_multihome_jobs;
1602 };
1603
1604 struct pf_sctp_multihome_job {
1605 TAILQ_ENTRY(pf_sctp_multihome_job) next;
1606 struct pf_pdesc pd;
1607 struct pf_addr src;
1608 struct pf_addr dst;
1609 struct mbuf *m;
1610 int op;
1611 };
1612
1613 #endif
1614
1615 /* flags for RDR options */
1616 #define PF_DPORT_RANGE 0x01 /* Dest port uses range */
1617 #define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */
1618
1619 /* UDP state enumeration */
1620 #define PFUDPS_NO_TRAFFIC 0
1621 #define PFUDPS_SINGLE 1
1622 #define PFUDPS_MULTIPLE 2
1623
1624 #define PFUDPS_NSTATES 3 /* number of state levels */
1625
1626 #define PFUDPS_NAMES { \
1627 "NO_TRAFFIC", \
1628 "SINGLE", \
1629 "MULTIPLE", \
1630 NULL \
1631 }
1632
1633 /* Other protocol state enumeration */
1634 #define PFOTHERS_NO_TRAFFIC 0
1635 #define PFOTHERS_SINGLE 1
1636 #define PFOTHERS_MULTIPLE 2
1637
1638 #define PFOTHERS_NSTATES 3 /* number of state levels */
1639
1640 #define PFOTHERS_NAMES { \
1641 "NO_TRAFFIC", \
1642 "SINGLE", \
1643 "MULTIPLE", \
1644 NULL \
1645 }
1646
1647 #define ACTION_SET(a, x) \
1648 do { \
1649 if ((a) != NULL) \
1650 *(a) = (x); \
1651 } while (0)
1652
1653 #define REASON_SET(a, x) \
1654 do { \
1655 if ((a) != NULL) \
1656 *(a) = (x); \
1657 if (x < PFRES_MAX) \
1658 counter_u64_add(V_pf_status.counters[x], 1); \
1659 } while (0)
1660
1661 enum pf_syncookies_mode {
1662 PF_SYNCOOKIES_NEVER = 0,
1663 PF_SYNCOOKIES_ALWAYS = 1,
1664 PF_SYNCOOKIES_ADAPTIVE = 2,
1665 PF_SYNCOOKIES_MODE_MAX = PF_SYNCOOKIES_ADAPTIVE
1666 };
1667
1668 #define PF_SYNCOOKIES_HIWATPCT 25
1669 #define PF_SYNCOOKIES_LOWATPCT (PF_SYNCOOKIES_HIWATPCT / 2)
1670
1671 #ifdef _KERNEL
1672 struct pf_kstatus {
1673 counter_u64_t counters[PFRES_MAX]; /* reason for passing/dropping */
1674 counter_u64_t lcounters[KLCNT_MAX]; /* limit counters */
1675 struct pf_counter_u64 fcounters[FCNT_MAX]; /* state operation counters */
1676 counter_u64_t scounters[SCNT_MAX]; /* src_node operation counters */
1677 uint32_t states;
1678 uint32_t src_nodes;
1679 uint32_t running;
1680 uint32_t since;
1681 uint32_t debug;
1682 uint32_t hostid;
1683 char ifname[IFNAMSIZ];
1684 uint8_t pf_chksum[PF_MD5_DIGEST_LENGTH];
1685 bool keep_counters;
1686 enum pf_syncookies_mode syncookies_mode;
1687 bool syncookies_active;
1688 uint64_t syncookies_inflight[2];
1689 uint32_t states_halfopen;
1690 uint32_t reass;
1691 };
1692 #endif
1693
1694 struct pf_divert {
1695 union {
1696 struct in_addr ipv4;
1697 struct in6_addr ipv6;
1698 } addr;
1699 u_int16_t port;
1700 };
1701
1702 #define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */
1703 #define PFR_KENTRY_HIWAT 200000 /* Number of table entries */
1704
1705 /*
1706 * Limit the length of the fragment queue traversal. Remember
1707 * search entry points based on the fragment offset.
1708 */
1709 #define PF_FRAG_ENTRY_POINTS 16
1710
1711 /*
1712 * The number of entries in the fragment queue must be limited
1713 * to avoid DoS by linear searching. Instead of a global limit,
1714 * use a limit per entry point. For large packets these sum up.
1715 */
1716 #define PF_FRAG_ENTRY_LIMIT 64
1717
1718 /*
1719 * ioctl parameter structures
1720 */
1721
1722 struct pfioc_pooladdr {
1723 u_int32_t action;
1724 u_int32_t ticket;
1725 u_int32_t nr;
1726 u_int32_t r_num;
1727 u_int8_t r_action;
1728 u_int8_t r_last;
1729 u_int8_t af;
1730 char anchor[MAXPATHLEN];
1731 struct pf_pooladdr addr;
1732 };
1733
1734 struct pfioc_rule {
1735 u_int32_t action;
1736 u_int32_t ticket;
1737 u_int32_t pool_ticket;
1738 u_int32_t nr;
1739 char anchor[MAXPATHLEN];
1740 char anchor_call[MAXPATHLEN];
1741 struct pf_rule rule;
1742 };
1743
1744 struct pfioc_natlook {
1745 struct pf_addr saddr;
1746 struct pf_addr daddr;
1747 struct pf_addr rsaddr;
1748 struct pf_addr rdaddr;
1749 u_int16_t sport;
1750 u_int16_t dport;
1751 u_int16_t rsport;
1752 u_int16_t rdport;
1753 sa_family_t af;
1754 u_int8_t proto;
1755 u_int8_t direction;
1756 };
1757
1758 struct pfioc_state {
1759 struct pfsync_state_1301 state;
1760 };
1761
1762 struct pfioc_src_node_kill {
1763 sa_family_t psnk_af;
1764 struct pf_rule_addr psnk_src;
1765 struct pf_rule_addr psnk_dst;
1766 u_int psnk_killed;
1767 };
1768
1769 #ifdef _KERNEL
1770 struct pf_kstate_kill {
1771 struct pf_state_cmp psk_pfcmp;
1772 sa_family_t psk_af;
1773 int psk_proto;
1774 struct pf_rule_addr psk_src;
1775 struct pf_rule_addr psk_dst;
1776 struct pf_rule_addr psk_rt_addr;
1777 char psk_ifname[IFNAMSIZ];
1778 char psk_label[PF_RULE_LABEL_SIZE];
1779 u_int psk_killed;
1780 bool psk_kill_match;
1781 bool psk_nat;
1782 };
1783 #endif
1784
1785 struct pfioc_state_kill {
1786 struct pf_state_cmp psk_pfcmp;
1787 sa_family_t psk_af;
1788 int psk_proto;
1789 struct pf_rule_addr psk_src;
1790 struct pf_rule_addr psk_dst;
1791 char psk_ifname[IFNAMSIZ];
1792 char psk_label[PF_RULE_LABEL_SIZE];
1793 u_int psk_killed;
1794 };
1795
1796 struct pfioc_states {
1797 int ps_len;
1798 union {
1799 void *ps_buf;
1800 struct pfsync_state_1301 *ps_states;
1801 };
1802 };
1803
1804 struct pfioc_states_v2 {
1805 int ps_len;
1806 uint64_t ps_req_version;
1807 union {
1808 void *ps_buf;
1809 struct pf_state_export *ps_states;
1810 };
1811 };
1812
1813 struct pfioc_src_nodes {
1814 int psn_len;
1815 union {
1816 void *psn_buf;
1817 struct pf_src_node *psn_src_nodes;
1818 };
1819 };
1820
1821 struct pfioc_if {
1822 char ifname[IFNAMSIZ];
1823 };
1824
1825 struct pfioc_tm {
1826 int timeout;
1827 int seconds;
1828 };
1829
1830 struct pfioc_limit {
1831 int index;
1832 unsigned limit;
1833 };
1834
1835 struct pfioc_altq_v0 {
1836 u_int32_t action;
1837 u_int32_t ticket;
1838 u_int32_t nr;
1839 struct pf_altq_v0 altq;
1840 };
1841
1842 struct pfioc_altq_v1 {
1843 u_int32_t action;
1844 u_int32_t ticket;
1845 u_int32_t nr;
1846 /*
1847 * Placed here so code that only uses the above parameters can be
1848 * written entirely in terms of the v0 or v1 type.
1849 */
1850 u_int32_t version;
1851 struct pf_altq_v1 altq;
1852 };
1853
1854 /*
1855 * Latest version of struct pfioc_altq_vX. This must move in lock-step with
1856 * the latest version of struct pf_altq_vX as it has that struct as a
1857 * member.
1858 */
1859 #define PFIOC_ALTQ_VERSION PF_ALTQ_VERSION
1860
1861 struct pfioc_qstats_v0 {
1862 u_int32_t ticket;
1863 u_int32_t nr;
1864 void *buf;
1865 int nbytes;
1866 u_int8_t scheduler;
1867 };
1868
1869 struct pfioc_qstats_v1 {
1870 u_int32_t ticket;
1871 u_int32_t nr;
1872 void *buf;
1873 int nbytes;
1874 u_int8_t scheduler;
1875 /*
1876 * Placed here so code that only uses the above parameters can be
1877 * written entirely in terms of the v0 or v1 type.
1878 */
1879 u_int32_t version; /* Requested version of stats struct */
1880 };
1881
1882 /* Latest version of struct pfioc_qstats_vX */
1883 #define PFIOC_QSTATS_VERSION 1
1884
1885 struct pfioc_ruleset {
1886 u_int32_t nr;
1887 char path[MAXPATHLEN];
1888 char name[PF_ANCHOR_NAME_SIZE];
1889 };
1890
1891 #define PF_RULESET_ALTQ (PF_RULESET_MAX)
1892 #define PF_RULESET_TABLE (PF_RULESET_MAX+1)
1893 #define PF_RULESET_ETH (PF_RULESET_MAX+2)
1894 struct pfioc_trans {
1895 int size; /* number of elements */
1896 int esize; /* size of each element in bytes */
1897 struct pfioc_trans_e {
1898 int rs_num;
1899 char anchor[MAXPATHLEN];
1900 u_int32_t ticket;
1901 } *array;
1902 };
1903
1904 #define PFR_FLAG_ATOMIC 0x00000001 /* unused */
1905 #define PFR_FLAG_DUMMY 0x00000002
1906 #define PFR_FLAG_FEEDBACK 0x00000004
1907 #define PFR_FLAG_CLSTATS 0x00000008
1908 #define PFR_FLAG_ADDRSTOO 0x00000010
1909 #define PFR_FLAG_REPLACE 0x00000020
1910 #define PFR_FLAG_ALLRSETS 0x00000040
1911 #define PFR_FLAG_ALLMASK 0x0000007F
1912 #ifdef _KERNEL
1913 #define PFR_FLAG_USERIOCTL 0x10000000
1914 #endif
1915
1916 struct pfioc_table {
1917 struct pfr_table pfrio_table;
1918 void *pfrio_buffer;
1919 int pfrio_esize;
1920 int pfrio_size;
1921 int pfrio_size2;
1922 int pfrio_nadd;
1923 int pfrio_ndel;
1924 int pfrio_nchange;
1925 int pfrio_flags;
1926 u_int32_t pfrio_ticket;
1927 };
1928 #define pfrio_exists pfrio_nadd
1929 #define pfrio_nzero pfrio_nadd
1930 #define pfrio_nmatch pfrio_nadd
1931 #define pfrio_naddr pfrio_size2
1932 #define pfrio_setflag pfrio_size2
1933 #define pfrio_clrflag pfrio_nadd
1934
1935 struct pfioc_iface {
1936 char pfiio_name[IFNAMSIZ];
1937 void *pfiio_buffer;
1938 int pfiio_esize;
1939 int pfiio_size;
1940 int pfiio_nzero;
1941 int pfiio_flags;
1942 };
1943
1944 /*
1945 * ioctl operations
1946 */
1947
1948 #define DIOCSTART _IO ('D', 1)
1949 #define DIOCSTOP _IO ('D', 2)
1950 #define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule)
1951 #define DIOCADDRULENV _IOWR('D', 4, struct pfioc_nv)
1952 #define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule)
1953 #define DIOCGETRULENV _IOWR('D', 7, struct pfioc_nv)
1954 /* XXX cut 8 - 17 */
1955 #define DIOCCLRSTATESNV _IOWR('D', 18, struct pfioc_nv)
1956 #define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state)
1957 #define DIOCGETSTATENV _IOWR('D', 19, struct pfioc_nv)
1958 #define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if)
1959 #define DIOCGETSTATUSNV _IOWR('D', 21, struct pfioc_nv)
1960 #define DIOCCLRSTATUS _IO ('D', 22)
1961 #define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook)
1962 #define DIOCSETDEBUG _IOWR('D', 24, u_int32_t)
1963 #ifdef COMPAT_FREEBSD14
1964 #define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states)
1965 #endif
1966 #define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule)
1967 /* XXX cut 26 - 28 */
1968 #define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm)
1969 #define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm)
1970 #define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state)
1971 #define DIOCCLRRULECTRS _IO ('D', 38)
1972 #define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit)
1973 #define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit)
1974 #define DIOCKILLSTATESNV _IOWR('D', 41, struct pfioc_nv)
1975 #define DIOCSTARTALTQ _IO ('D', 42)
1976 #define DIOCSTOPALTQ _IO ('D', 43)
1977 #define DIOCADDALTQV0 _IOWR('D', 45, struct pfioc_altq_v0)
1978 #define DIOCADDALTQV1 _IOWR('D', 45, struct pfioc_altq_v1)
1979 #define DIOCGETALTQSV0 _IOWR('D', 47, struct pfioc_altq_v0)
1980 #define DIOCGETALTQSV1 _IOWR('D', 47, struct pfioc_altq_v1)
1981 #define DIOCGETALTQV0 _IOWR('D', 48, struct pfioc_altq_v0)
1982 #define DIOCGETALTQV1 _IOWR('D', 48, struct pfioc_altq_v1)
1983 #define DIOCCHANGEALTQV0 _IOWR('D', 49, struct pfioc_altq_v0)
1984 #define DIOCCHANGEALTQV1 _IOWR('D', 49, struct pfioc_altq_v1)
1985 #define DIOCGETQSTATSV0 _IOWR('D', 50, struct pfioc_qstats_v0)
1986 #define DIOCGETQSTATSV1 _IOWR('D', 50, struct pfioc_qstats_v1)
1987 #define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr)
1988 #define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr)
1989 #define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr)
1990 #define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr)
1991 #define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr)
1992 /* XXX cut 55 - 57 */
1993 #define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset)
1994 #define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset)
1995 #define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table)
1996 #define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table)
1997 #define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table)
1998 #define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table)
1999 #define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table)
2000 #define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table)
2001 #define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table)
2002 #define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table)
2003 #define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table)
2004 #define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table)
2005 #define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table)
2006 #define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table)
2007 #define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table)
2008 #define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table)
2009 #define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table)
2010 #define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table)
2011 #define DIOCOSFPFLUSH _IO('D', 78)
2012 #define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl)
2013 #define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl)
2014 #define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans)
2015 #define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans)
2016 #define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans)
2017 #define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes)
2018 #define DIOCCLRSRCNODES _IO('D', 85)
2019 #define DIOCSETHOSTID _IOWR('D', 86, u_int32_t)
2020 #define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface)
2021 #define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface)
2022 #define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface)
2023 #define DIOCKILLSRCNODES _IOWR('D', 91, struct pfioc_src_node_kill)
2024 #define DIOCGIFSPEEDV0 _IOWR('D', 92, struct pf_ifspeed_v0)
2025 #define DIOCGIFSPEEDV1 _IOWR('D', 92, struct pf_ifspeed_v1)
2026 #ifdef COMPAT_FREEBSD14
2027 #define DIOCGETSTATESV2 _IOWR('D', 93, struct pfioc_states_v2)
2028 #endif
2029 #define DIOCGETSYNCOOKIES _IOWR('D', 94, struct pfioc_nv)
2030 #define DIOCSETSYNCOOKIES _IOWR('D', 95, struct pfioc_nv)
2031 #define DIOCKEEPCOUNTERS _IOWR('D', 96, struct pfioc_nv)
2032 #define DIOCKEEPCOUNTERS_FREEBSD13 _IOWR('D', 92, struct pfioc_nv)
2033 #define DIOCADDETHRULE _IOWR('D', 97, struct pfioc_nv)
2034 #define DIOCGETETHRULE _IOWR('D', 98, struct pfioc_nv)
2035 #define DIOCGETETHRULES _IOWR('D', 99, struct pfioc_nv)
2036 #define DIOCGETETHRULESETS _IOWR('D', 100, struct pfioc_nv)
2037 #define DIOCGETETHRULESET _IOWR('D', 101, struct pfioc_nv)
2038 #define DIOCSETREASS _IOWR('D', 102, u_int32_t)
2039
2040 struct pf_ifspeed_v0 {
2041 char ifname[IFNAMSIZ];
2042 u_int32_t baudrate;
2043 };
2044
2045 struct pf_ifspeed_v1 {
2046 char ifname[IFNAMSIZ];
2047 u_int32_t baudrate32;
2048 /* layout identical to struct pf_ifspeed_v0 up to this point */
2049 u_int64_t baudrate;
2050 };
2051
2052 /* Latest version of struct pf_ifspeed_vX */
2053 #define PF_IFSPEED_VERSION 1
2054
2055 /*
2056 * Compatibility and convenience macros
2057 */
2058 #ifndef _KERNEL
2059 #ifdef PFIOC_USE_LATEST
2060 /*
2061 * Maintaining in-tree consumers of the ioctl interface is easier when that
2062 * code can be written in terms old names that refer to the latest interface
2063 * version as that reduces the required changes in the consumers to those
2064 * that are functionally necessary to accommodate a new interface version.
2065 */
2066 #define pfioc_altq __CONCAT(pfioc_altq_v, PFIOC_ALTQ_VERSION)
2067 #define pfioc_qstats __CONCAT(pfioc_qstats_v, PFIOC_QSTATS_VERSION)
2068 #define pf_ifspeed __CONCAT(pf_ifspeed_v, PF_IFSPEED_VERSION)
2069
2070 #define DIOCADDALTQ __CONCAT(DIOCADDALTQV, PFIOC_ALTQ_VERSION)
2071 #define DIOCGETALTQS __CONCAT(DIOCGETALTQSV, PFIOC_ALTQ_VERSION)
2072 #define DIOCGETALTQ __CONCAT(DIOCGETALTQV, PFIOC_ALTQ_VERSION)
2073 #define DIOCCHANGEALTQ __CONCAT(DIOCCHANGEALTQV, PFIOC_ALTQ_VERSION)
2074 #define DIOCGETQSTATS __CONCAT(DIOCGETQSTATSV, PFIOC_QSTATS_VERSION)
2075 #define DIOCGIFSPEED __CONCAT(DIOCGIFSPEEDV, PF_IFSPEED_VERSION)
2076 #else
2077 /*
2078 * When building out-of-tree code that is written for the old interface,
2079 * such as may exist in ports for example, resolve the old struct tags and
2080 * ioctl command names to the v0 versions.
2081 */
2082 #define pfioc_altq __CONCAT(pfioc_altq_v, 0)
2083 #define pfioc_qstats __CONCAT(pfioc_qstats_v, 0)
2084 #define pf_ifspeed __CONCAT(pf_ifspeed_v, 0)
2085
2086 #define DIOCADDALTQ __CONCAT(DIOCADDALTQV, 0)
2087 #define DIOCGETALTQS __CONCAT(DIOCGETALTQSV, 0)
2088 #define DIOCGETALTQ __CONCAT(DIOCGETALTQV, 0)
2089 #define DIOCCHANGEALTQ __CONCAT(DIOCCHANGEALTQV, 0)
2090 #define DIOCGETQSTATS __CONCAT(DIOCGETQSTATSV, 0)
2091 #define DIOCGIFSPEED __CONCAT(DIOCGIFSPEEDV, 0)
2092 #endif /* PFIOC_USE_LATEST */
2093 #endif /* _KERNEL */
2094
2095 #ifdef _KERNEL
2096 LIST_HEAD(pf_ksrc_node_list, pf_ksrc_node);
2097 struct pf_srchash {
2098 struct pf_ksrc_node_list nodes;
2099 struct mtx lock;
2100 };
2101
2102 struct pf_keyhash {
2103 LIST_HEAD(, pf_state_key) keys;
2104 struct mtx lock;
2105 };
2106
2107 struct pf_idhash {
2108 LIST_HEAD(, pf_kstate) states;
2109 struct mtx lock;
2110 };
2111
2112 extern u_long pf_ioctl_maxcount;
2113 extern u_long pf_hashmask;
2114 extern u_long pf_srchashmask;
2115 #define PF_HASHSIZ (131072)
2116 #define PF_SRCHASHSIZ (PF_HASHSIZ/4)
2117 VNET_DECLARE(struct pf_keyhash *, pf_keyhash);
2118 VNET_DECLARE(struct pf_idhash *, pf_idhash);
2119 #define V_pf_keyhash VNET(pf_keyhash)
2120 #define V_pf_idhash VNET(pf_idhash)
2121 VNET_DECLARE(struct pf_srchash *, pf_srchash);
2122 #define V_pf_srchash VNET(pf_srchash)
2123
2124 #define PF_IDHASH(s) (be64toh((s)->id) % (pf_hashmask + 1))
2125
2126 VNET_DECLARE(void *, pf_swi_cookie);
2127 #define V_pf_swi_cookie VNET(pf_swi_cookie)
2128 VNET_DECLARE(struct intr_event *, pf_swi_ie);
2129 #define V_pf_swi_ie VNET(pf_swi_ie)
2130
2131 VNET_DECLARE(struct unrhdr64, pf_stateid);
2132 #define V_pf_stateid VNET(pf_stateid)
2133
2134 TAILQ_HEAD(pf_altqqueue, pf_altq);
2135 VNET_DECLARE(struct pf_altqqueue, pf_altqs[4]);
2136 #define V_pf_altqs VNET(pf_altqs)
2137 VNET_DECLARE(struct pf_kpalist, pf_pabuf);
2138 #define V_pf_pabuf VNET(pf_pabuf)
2139
2140 VNET_DECLARE(u_int32_t, ticket_altqs_active);
2141 #define V_ticket_altqs_active VNET(ticket_altqs_active)
2142 VNET_DECLARE(u_int32_t, ticket_altqs_inactive);
2143 #define V_ticket_altqs_inactive VNET(ticket_altqs_inactive)
2144 VNET_DECLARE(int, altqs_inactive_open);
2145 #define V_altqs_inactive_open VNET(altqs_inactive_open)
2146 VNET_DECLARE(u_int32_t, ticket_pabuf);
2147 #define V_ticket_pabuf VNET(ticket_pabuf)
2148 VNET_DECLARE(struct pf_altqqueue *, pf_altqs_active);
2149 #define V_pf_altqs_active VNET(pf_altqs_active)
2150 VNET_DECLARE(struct pf_altqqueue *, pf_altq_ifs_active);
2151 #define V_pf_altq_ifs_active VNET(pf_altq_ifs_active)
2152 VNET_DECLARE(struct pf_altqqueue *, pf_altqs_inactive);
2153 #define V_pf_altqs_inactive VNET(pf_altqs_inactive)
2154 VNET_DECLARE(struct pf_altqqueue *, pf_altq_ifs_inactive);
2155 #define V_pf_altq_ifs_inactive VNET(pf_altq_ifs_inactive)
2156
2157 VNET_DECLARE(struct pf_krulequeue, pf_unlinked_rules);
2158 #define V_pf_unlinked_rules VNET(pf_unlinked_rules)
2159
2160 #ifdef PF_WANT_32_TO_64_COUNTER
2161 LIST_HEAD(allkiflist_head, pfi_kkif);
2162 VNET_DECLARE(struct allkiflist_head, pf_allkiflist);
2163 #define V_pf_allkiflist VNET(pf_allkiflist)
2164 VNET_DECLARE(size_t, pf_allkifcount);
2165 #define V_pf_allkifcount VNET(pf_allkifcount)
2166 VNET_DECLARE(struct pfi_kkif *, pf_kifmarker);
2167 #define V_pf_kifmarker VNET(pf_kifmarker)
2168
2169 LIST_HEAD(allrulelist_head, pf_krule);
2170 VNET_DECLARE(struct allrulelist_head, pf_allrulelist);
2171 #define V_pf_allrulelist VNET(pf_allrulelist)
2172 VNET_DECLARE(size_t, pf_allrulecount);
2173 #define V_pf_allrulecount VNET(pf_allrulecount)
2174 VNET_DECLARE(struct pf_krule *, pf_rulemarker);
2175 #define V_pf_rulemarker VNET(pf_rulemarker)
2176 #endif
2177
2178 int pf_start(void);
2179 int pf_stop(void);
2180 void pf_initialize(void);
2181 void pf_mtag_initialize(void);
2182 void pf_mtag_cleanup(void);
2183 void pf_cleanup(void);
2184
2185 struct pf_mtag *pf_get_mtag(struct mbuf *);
2186
2187 extern void pf_calc_skip_steps(struct pf_krulequeue *);
2188 #ifdef ALTQ
2189 extern void pf_altq_ifnet_event(struct ifnet *, int);
2190 #endif
2191 VNET_DECLARE(uma_zone_t, pf_state_z);
2192 #define V_pf_state_z VNET(pf_state_z)
2193 VNET_DECLARE(uma_zone_t, pf_state_key_z);
2194 #define V_pf_state_key_z VNET(pf_state_key_z)
2195 VNET_DECLARE(uma_zone_t, pf_state_scrub_z);
2196 #define V_pf_state_scrub_z VNET(pf_state_scrub_z)
2197
2198 extern void pf_purge_thread(void *);
2199 extern void pf_unload_vnet_purge(void);
2200 extern void pf_intr(void *);
2201 extern void pf_purge_expired_src_nodes(void);
2202
2203 extern int pf_unlink_state(struct pf_kstate *);
2204 extern int pf_state_insert(struct pfi_kkif *,
2205 struct pfi_kkif *,
2206 struct pf_state_key *,
2207 struct pf_state_key *,
2208 struct pf_kstate *);
2209 extern struct pf_kstate *pf_alloc_state(int);
2210 extern void pf_free_state(struct pf_kstate *);
2211 extern void pf_killstates(struct pf_kstate_kill *,
2212 unsigned int *);
2213 extern unsigned int pf_clear_states(const struct pf_kstate_kill *);
2214
2215 static __inline void
pf_ref_state(struct pf_kstate * s)2216 pf_ref_state(struct pf_kstate *s)
2217 {
2218
2219 refcount_acquire(&s->refs);
2220 }
2221
2222 static __inline int
pf_release_state(struct pf_kstate * s)2223 pf_release_state(struct pf_kstate *s)
2224 {
2225
2226 if (refcount_release(&s->refs)) {
2227 pf_free_state(s);
2228 return (1);
2229 } else
2230 return (0);
2231 }
2232
2233 static __inline int
pf_release_staten(struct pf_kstate * s,u_int n)2234 pf_release_staten(struct pf_kstate *s, u_int n)
2235 {
2236
2237 if (refcount_releasen(&s->refs, n)) {
2238 pf_free_state(s);
2239 return (1);
2240 } else
2241 return (0);
2242 }
2243
2244 static __inline uint64_t
pf_get_uptime(void)2245 pf_get_uptime(void)
2246 {
2247 struct timeval t;
2248 microuptime(&t);
2249 return ((t.tv_sec * 1000) + (t.tv_usec / 1000));
2250 }
2251
2252 static __inline uint64_t
pf_get_time(void)2253 pf_get_time(void)
2254 {
2255 struct timeval t;
2256 microtime(&t);
2257 return ((t.tv_sec * 1000) + (t.tv_usec / 1000));
2258 }
2259
2260 extern struct pf_kstate *pf_find_state_byid(uint64_t, uint32_t);
2261 extern struct pf_kstate *pf_find_state_all(struct pf_state_key_cmp *,
2262 u_int, int *);
2263 extern bool pf_find_state_all_exists(struct pf_state_key_cmp *,
2264 u_int);
2265 extern struct pf_ksrc_node *pf_find_src_node(struct pf_addr *,
2266 struct pf_krule *, sa_family_t,
2267 struct pf_srchash **, bool);
2268 extern void pf_unlink_src_node(struct pf_ksrc_node *);
2269 extern u_int pf_free_src_nodes(struct pf_ksrc_node_list *);
2270 extern void pf_print_state(struct pf_kstate *);
2271 extern void pf_print_flags(u_int8_t);
2272 extern int pf_addr_wrap_neq(struct pf_addr_wrap *,
2273 struct pf_addr_wrap *);
2274 extern u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t,
2275 u_int8_t);
2276 extern u_int16_t pf_proto_cksum_fixup(struct mbuf *, u_int16_t,
2277 u_int16_t, u_int16_t, u_int8_t);
2278
2279 VNET_DECLARE(struct ifnet *, sync_ifp);
2280 #define V_sync_ifp VNET(sync_ifp);
2281 VNET_DECLARE(struct pf_krule, pf_default_rule);
2282 #define V_pf_default_rule VNET(pf_default_rule)
2283 extern void pf_addrcpy(struct pf_addr *, struct pf_addr *,
2284 sa_family_t);
2285 void pf_free_rule(struct pf_krule *);
2286
2287 int pf_test_eth(int, int, struct ifnet *, struct mbuf **, struct inpcb *);
2288 #ifdef INET
2289 int pf_test(int, int, struct ifnet *, struct mbuf **, struct inpcb *,
2290 struct pf_rule_actions *);
2291 int pf_normalize_ip(struct mbuf **, struct pfi_kkif *, u_short *,
2292 struct pf_pdesc *);
2293 #endif /* INET */
2294
2295 #ifdef INET6
2296 int pf_test6(int, int, struct ifnet *, struct mbuf **, struct inpcb *,
2297 struct pf_rule_actions *);
2298 int pf_normalize_ip6(struct mbuf **, struct pfi_kkif *, u_short *,
2299 struct pf_pdesc *);
2300 void pf_poolmask(struct pf_addr *, struct pf_addr*,
2301 struct pf_addr *, struct pf_addr *, sa_family_t);
2302 void pf_addr_inc(struct pf_addr *, sa_family_t);
2303 int pf_max_frag_size(struct mbuf *);
2304 int pf_refragment6(struct ifnet *, struct mbuf **, struct m_tag *, bool);
2305 #endif /* INET6 */
2306
2307 int pf_multihome_scan_init(struct mbuf *, int, int, struct pf_pdesc *,
2308 struct pfi_kkif *);
2309 int pf_multihome_scan_asconf(struct mbuf *, int, int, struct pf_pdesc *,
2310 struct pfi_kkif *);
2311
2312 u_int32_t pf_new_isn(struct pf_kstate *);
2313 void *pf_pull_hdr(struct mbuf *, int, void *, int, u_short *, u_short *,
2314 sa_family_t);
2315 void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t);
2316 void pf_change_proto_a(struct mbuf *, void *, u_int16_t *, u_int32_t,
2317 u_int8_t);
2318 void pf_change_tcp_a(struct mbuf *, void *, u_int16_t *, u_int32_t);
2319 void pf_patch_16_unaligned(struct mbuf *, u_int16_t *, void *, u_int16_t,
2320 bool, u_int8_t);
2321 void pf_patch_32_unaligned(struct mbuf *, u_int16_t *, void *, u_int32_t,
2322 bool, u_int8_t);
2323 void pf_send_deferred_syn(struct pf_kstate *);
2324 int pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *,
2325 struct pf_addr *, sa_family_t);
2326 int pf_match_addr_range(struct pf_addr *, struct pf_addr *,
2327 struct pf_addr *, sa_family_t);
2328 int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t);
2329
2330 void pf_normalize_init(void);
2331 void pf_normalize_cleanup(void);
2332 int pf_normalize_tcp(struct pfi_kkif *, struct mbuf *, int, int, void *,
2333 struct pf_pdesc *);
2334 void pf_normalize_tcp_cleanup(struct pf_kstate *);
2335 int pf_normalize_tcp_init(struct mbuf *, int, struct pf_pdesc *,
2336 struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *);
2337 int pf_normalize_tcp_stateful(struct mbuf *, int, struct pf_pdesc *,
2338 u_short *, struct tcphdr *, struct pf_kstate *,
2339 struct pf_state_peer *, struct pf_state_peer *, int *);
2340 int pf_normalize_sctp_init(struct mbuf *, int, struct pf_pdesc *,
2341 struct pf_state_peer *, struct pf_state_peer *);
2342 int pf_normalize_sctp(int, struct pfi_kkif *, struct mbuf *, int,
2343 int, void *, struct pf_pdesc *);
2344 u_int32_t
2345 pf_state_expires(const struct pf_kstate *);
2346 void pf_purge_expired_fragments(void);
2347 void pf_purge_fragments(uint32_t);
2348 int pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kkif *,
2349 int);
2350 int pf_socket_lookup(struct pf_pdesc *, struct mbuf *);
2351 struct pf_state_key *pf_alloc_state_key(int);
2352 void pfr_initialize(void);
2353 void pfr_cleanup(void);
2354 int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t);
2355 void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t,
2356 u_int64_t, int, int, int);
2357 int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, sa_family_t);
2358 void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *);
2359 struct pfr_ktable *
2360 pfr_attach_table(struct pf_kruleset *, char *);
2361 struct pfr_ktable *
2362 pfr_eth_attach_table(struct pf_keth_ruleset *, char *);
2363 void pfr_detach_table(struct pfr_ktable *);
2364 int pfr_clr_tables(struct pfr_table *, int *, int);
2365 int pfr_add_tables(struct pfr_table *, int, int *, int);
2366 int pfr_del_tables(struct pfr_table *, int, int *, int);
2367 int pfr_table_count(struct pfr_table *, int);
2368 int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int);
2369 int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int);
2370 int pfr_clr_tstats(struct pfr_table *, int, int *, int);
2371 int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int);
2372 int pfr_clr_addrs(struct pfr_table *, int *, int);
2373 int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *, long);
2374 int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
2375 int);
2376 int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
2377 int);
2378 int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
2379 int *, int *, int *, int, u_int32_t);
2380 int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int);
2381 int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int);
2382 int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *,
2383 int);
2384 int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
2385 int);
2386 int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int);
2387 int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int);
2388 int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int);
2389 int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *,
2390 int *, u_int32_t, int);
2391
2392 MALLOC_DECLARE(PFI_MTYPE);
2393 VNET_DECLARE(struct pfi_kkif *, pfi_all);
2394 #define V_pfi_all VNET(pfi_all)
2395
2396 void pfi_initialize(void);
2397 void pfi_initialize_vnet(void);
2398 void pfi_cleanup(void);
2399 void pfi_cleanup_vnet(void);
2400 void pfi_kkif_ref(struct pfi_kkif *);
2401 void pfi_kkif_unref(struct pfi_kkif *);
2402 struct pfi_kkif *pfi_kkif_find(const char *);
2403 struct pfi_kkif *pfi_kkif_attach(struct pfi_kkif *, const char *);
2404 int pfi_kkif_match(struct pfi_kkif *, struct pfi_kkif *);
2405 void pfi_kkif_purge(void);
2406 int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *,
2407 sa_family_t);
2408 int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t);
2409 void pfi_dynaddr_remove(struct pfi_dynaddr *);
2410 void pfi_dynaddr_copyout(struct pf_addr_wrap *);
2411 void pfi_update_status(const char *, struct pf_status *);
2412 void pfi_get_ifaces(const char *, struct pfi_kif *, int *);
2413 int pfi_set_flags(const char *, int);
2414 int pfi_clear_flags(const char *, int);
2415
2416 int pf_match_tag(struct mbuf *, struct pf_krule *, int *, int);
2417 int pf_tag_packet(struct mbuf *, struct pf_pdesc *, int);
2418 int pf_addr_cmp(struct pf_addr *, struct pf_addr *,
2419 sa_family_t);
2420
2421 u_int16_t pf_get_mss(struct mbuf *, int, u_int16_t, sa_family_t);
2422 u_int8_t pf_get_wscale(struct mbuf *, int, u_int16_t, sa_family_t);
2423 struct mbuf *pf_build_tcp(const struct pf_krule *, sa_family_t,
2424 const struct pf_addr *, const struct pf_addr *,
2425 u_int16_t, u_int16_t, u_int32_t, u_int32_t,
2426 u_int8_t, u_int16_t, u_int16_t, u_int8_t, bool,
2427 u_int16_t, u_int16_t, int);
2428 void pf_send_tcp(const struct pf_krule *, sa_family_t,
2429 const struct pf_addr *, const struct pf_addr *,
2430 u_int16_t, u_int16_t, u_int32_t, u_int32_t,
2431 u_int8_t, u_int16_t, u_int16_t, u_int8_t, bool,
2432 u_int16_t, u_int16_t, int);
2433
2434 void pf_syncookies_init(void);
2435 void pf_syncookies_cleanup(void);
2436 int pf_get_syncookies(struct pfioc_nv *);
2437 int pf_set_syncookies(struct pfioc_nv *);
2438 int pf_synflood_check(struct pf_pdesc *);
2439 void pf_syncookie_send(struct mbuf *m, int off,
2440 struct pf_pdesc *);
2441 bool pf_syncookie_check(struct pf_pdesc *);
2442 u_int8_t pf_syncookie_validate(struct pf_pdesc *);
2443 struct mbuf * pf_syncookie_recreate_syn(uint8_t, int,
2444 struct pf_pdesc *);
2445
2446 VNET_DECLARE(struct pf_kstatus, pf_status);
2447 #define V_pf_status VNET(pf_status)
2448
2449 struct pf_limit {
2450 uma_zone_t zone;
2451 u_int limit;
2452 };
2453 VNET_DECLARE(struct pf_limit, pf_limits[PF_LIMIT_MAX]);
2454 #define V_pf_limits VNET(pf_limits)
2455
2456 #endif /* _KERNEL */
2457
2458 #ifdef _KERNEL
2459 VNET_DECLARE(struct pf_kanchor_global, pf_anchors);
2460 #define V_pf_anchors VNET(pf_anchors)
2461 VNET_DECLARE(struct pf_kanchor, pf_main_anchor);
2462 #define V_pf_main_anchor VNET(pf_main_anchor)
2463 VNET_DECLARE(struct pf_keth_anchor_global, pf_keth_anchors);
2464 #define V_pf_keth_anchors VNET(pf_keth_anchors)
2465 #define pf_main_ruleset V_pf_main_anchor.ruleset
2466
2467 VNET_DECLARE(struct pf_keth_anchor, pf_main_keth_anchor);
2468 #define V_pf_main_keth_anchor VNET(pf_main_keth_anchor)
2469 VNET_DECLARE(struct pf_keth_ruleset*, pf_keth);
2470 #define V_pf_keth VNET(pf_keth)
2471
2472 void pf_init_kruleset(struct pf_kruleset *);
2473 void pf_init_keth(struct pf_keth_ruleset *);
2474 int pf_kanchor_setup(struct pf_krule *,
2475 const struct pf_kruleset *, const char *);
2476 int pf_kanchor_copyout(const struct pf_kruleset *,
2477 const struct pf_krule *, char *);
2478 int pf_kanchor_nvcopyout(const struct pf_kruleset *,
2479 const struct pf_krule *, nvlist_t *);
2480 void pf_kanchor_remove(struct pf_krule *);
2481 void pf_remove_if_empty_kruleset(struct pf_kruleset *);
2482 struct pf_kruleset *pf_find_kruleset(const char *);
2483 struct pf_kruleset *pf_find_or_create_kruleset(const char *);
2484 void pf_rs_initialize(void);
2485
2486
2487 struct pf_krule *pf_krule_alloc(void);
2488
2489 void pf_remove_if_empty_keth_ruleset(
2490 struct pf_keth_ruleset *);
2491 struct pf_keth_ruleset *pf_find_keth_ruleset(const char *);
2492 struct pf_keth_anchor *pf_find_keth_anchor(const char *);
2493 int pf_keth_anchor_setup(struct pf_keth_rule *,
2494 const struct pf_keth_ruleset *, const char *);
2495 int pf_keth_anchor_nvcopyout(
2496 const struct pf_keth_ruleset *,
2497 const struct pf_keth_rule *, nvlist_t *);
2498 struct pf_keth_ruleset *pf_find_or_create_keth_ruleset(const char *);
2499 void pf_keth_anchor_remove(struct pf_keth_rule *);
2500
2501 int pf_ioctl_getrules(struct pfioc_rule *);
2502 int pf_ioctl_addrule(struct pf_krule *, uint32_t,
2503 uint32_t, const char *, const char *, uid_t uid,
2504 pid_t);
2505
2506 void pf_krule_free(struct pf_krule *);
2507 void pf_krule_clear_counters(struct pf_krule *);
2508 #endif
2509
2510 /* The fingerprint functions can be linked into userland programs (tcpdump) */
2511 int pf_osfp_add(struct pf_osfp_ioctl *);
2512 #ifdef _KERNEL
2513 struct pf_osfp_enlist *
2514 pf_osfp_fingerprint(struct pf_pdesc *, struct mbuf *, int,
2515 const struct tcphdr *);
2516 #endif /* _KERNEL */
2517 void pf_osfp_flush(void);
2518 int pf_osfp_get(struct pf_osfp_ioctl *);
2519 int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t);
2520
2521 #ifdef _KERNEL
2522 void pf_print_host(struct pf_addr *, u_int16_t, sa_family_t);
2523
2524 void pf_step_into_anchor(struct pf_kanchor_stackframe *, int *,
2525 struct pf_kruleset **, int, struct pf_krule **,
2526 struct pf_krule **, int *);
2527 int pf_step_out_of_anchor(struct pf_kanchor_stackframe *, int *,
2528 struct pf_kruleset **, int, struct pf_krule **,
2529 struct pf_krule **, int *);
2530 void pf_step_into_keth_anchor(struct pf_keth_anchor_stackframe *,
2531 int *, struct pf_keth_ruleset **,
2532 struct pf_keth_rule **, struct pf_keth_rule **,
2533 int *);
2534 int pf_step_out_of_keth_anchor(struct pf_keth_anchor_stackframe *,
2535 int *, struct pf_keth_ruleset **,
2536 struct pf_keth_rule **, struct pf_keth_rule **,
2537 int *);
2538
2539 u_short pf_map_addr(u_int8_t, struct pf_krule *,
2540 struct pf_addr *, struct pf_addr *,
2541 struct pfi_kkif **nkif, struct pf_addr *,
2542 struct pf_ksrc_node **);
2543 struct pf_krule *pf_get_translation(struct pf_pdesc *, struct mbuf *,
2544 int, struct pfi_kkif *, struct pf_ksrc_node **,
2545 struct pf_state_key **, struct pf_state_key **,
2546 struct pf_addr *, struct pf_addr *,
2547 uint16_t, uint16_t, struct pf_kanchor_stackframe *);
2548
2549 struct pf_state_key *pf_state_key_setup(struct pf_pdesc *, struct pf_addr *,
2550 struct pf_addr *, u_int16_t, u_int16_t);
2551 struct pf_state_key *pf_state_key_clone(struct pf_state_key *);
2552 void pf_rule_to_actions(struct pf_krule *,
2553 struct pf_rule_actions *);
2554 int pf_normalize_mss(struct mbuf *m, int off,
2555 struct pf_pdesc *pd);
2556 #ifdef INET
2557 void pf_scrub_ip(struct mbuf **, struct pf_pdesc *);
2558 #endif /* INET */
2559 #ifdef INET6
2560 void pf_scrub_ip6(struct mbuf **, struct pf_pdesc *);
2561 #endif /* INET6 */
2562
2563 struct pfi_kkif *pf_kkif_create(int);
2564 void pf_kkif_free(struct pfi_kkif *);
2565 void pf_kkif_zero(struct pfi_kkif *);
2566 #endif /* _KERNEL */
2567
2568 #endif /* _NET_PFVAR_H_ */
2569