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1 /*
2 * Copyright (c) 2008 Apple Inc. All rights reserved.
3 *
4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. The rights granted to you under the License
10 * may not be used to create, or enable the creation or redistribution of,
11 * unlawful or unlicensed copies of an Apple operating system, or to
12 * circumvent, violate, or enable the circumvention or violation of, any
13 * terms of an Apple operating system software license agreement.
14 *
15 * Please obtain a copy of the License at
16 * http://www.opensource.apple.com/apsl/ and read it before using this file.
17 *
18 * The Original Code and all software distributed under the License are
19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23 * Please see the License for the specific language governing rights and
24 * limitations under the License.
25 *
26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27 */
28
29 /* $apfw: pfvar.h,v 1.12 2008/08/27 00:01:32 jhw Exp $ */
30 /* $OpenBSD: pfvar.h,v 1.259 2007/12/02 12:08:04 pascoe Exp $ */
31
32 /*
33 * Copyright (c) 2001 Daniel Hartmeier
34 * All rights reserved.
35 *
36 * Redistribution and use in source and binary forms, with or without
37 * modification, are permitted provided that the following conditions
38 * are met:
39 *
40 * - Redistributions of source code must retain the above copyright
41 * notice, this list of conditions and the following disclaimer.
42 * - Redistributions in binary form must reproduce the above
43 * copyright notice, this list of conditions and the following
44 * disclaimer in the documentation and/or other materials provided
45 * with the distribution.
46 *
47 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
48 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
49 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
50 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
51 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
52 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
53 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
54 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
55 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
56 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
57 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
58 * POSSIBILITY OF SUCH DAMAGE.
59 *
60 */
61
62 #ifndef _NET_PFVAR_H_
63 #define _NET_PFVAR_H_
64
65 #ifdef PRIVATE
66 #if PF || !defined(KERNEL)
67
68 #ifdef __cplusplus
69 extern "C" {
70 #endif
71
72 #include <sys/param.h>
73 #include <sys/types.h>
74 #include <sys/queue.h>
75 #include <sys/tree.h>
76
77 #include <net/radix.h>
78 #include <netinet/in.h>
79
80 #ifdef KERNEL
81 #include <kern/kern_types.h>
82 #include <kern/zalloc.h>
83 #include <kern/lock.h>
84
85 #include <machine/endian.h>
86 #include <sys/systm.h>
87 #include <net/pf_mtag.h>
88
89 #if BYTE_ORDER == BIG_ENDIAN
90 #define htobe64(x) (x)
91 #else /* LITTLE ENDIAN */
92 #define htobe64(x) __DARWIN_OSSwapInt64(x)
93 #endif /* LITTLE_ENDIAN */
94
95 #define be64toh(x) htobe64(x)
96
97 __private_extern__ lck_rw_t *pf_perim_lock;
98 __private_extern__ lck_mtx_t *pf_lock;
99
100 struct pool {
101 struct zone *pool_zone; /* pointer to backend zone */
102 const char *pool_name; /* name of pool */
103 unsigned int pool_count; /* # of outstanding elements */
104 unsigned int pool_hiwat; /* high watermark */
105 unsigned int pool_limit; /* hard limit */
106 unsigned int pool_fails; /* # of failed allocs due to limit */
107 };
108
109 #define PR_NOWAIT FALSE
110 #define PR_WAITOK TRUE
111
112 __private_extern__ void pool_init(struct pool *, size_t, unsigned int,
113 unsigned int, int, const char *, void *);
114 __private_extern__ void pool_destroy(struct pool *);
115 __private_extern__ void pool_sethiwat(struct pool *, int);
116 __private_extern__ void pool_sethardlimit(struct pool *, int,
117 const char *, int);
118 __private_extern__ void *pool_get(struct pool *, int);
119 __private_extern__ void pool_put(struct pool *, void *);
120 __private_extern__ u_int64_t pf_time_second(void);
121 __private_extern__ u_int64_t pf_calendar_time_second(void);
122 #endif /* KERNEL */
123
124 union sockaddr_union {
125 struct sockaddr sa;
126 struct sockaddr_in sin;
127 struct sockaddr_in6 sin6;
128 };
129
130 struct ip;
131 struct ip6_hdr;
132 struct tcphdr;
133
134 #define PF_TCPS_PROXY_SRC ((TCP_NSTATES)+0)
135 #define PF_TCPS_PROXY_DST ((TCP_NSTATES)+1)
136
137 #define PF_MD5_DIGEST_LENGTH 16
138 #ifdef MD5_DIGEST_LENGTH
139 #if PF_MD5_DIGEST_LENGTH != MD5_DIGEST_LENGTH
140 #error
141 #endif
142 #endif
143
144 #ifndef NO_APPLE_EXTENSIONS
145 struct pf_grev1_hdr;
146 struct pf_esp_hdr;
147 #endif
148
149 enum { PF_INOUT, PF_IN, PF_OUT };
150 enum { PF_PASS, PF_DROP, PF_SCRUB, PF_NOSCRUB, PF_NAT, PF_NONAT,
151 PF_BINAT, PF_NOBINAT, PF_RDR, PF_NORDR, PF_SYNPROXY_DROP };
152 enum { PF_RULESET_SCRUB, PF_RULESET_FILTER, PF_RULESET_NAT,
153 PF_RULESET_BINAT, PF_RULESET_RDR, PF_RULESET_MAX };
154 enum { PF_OP_NONE, PF_OP_IRG, PF_OP_EQ, PF_OP_NE, PF_OP_LT,
155 PF_OP_LE, PF_OP_GT, PF_OP_GE, PF_OP_XRG, PF_OP_RRG };
156 enum { PF_DEBUG_NONE, PF_DEBUG_URGENT, PF_DEBUG_MISC, PF_DEBUG_NOISY };
157 enum { PF_CHANGE_NONE, PF_CHANGE_ADD_HEAD, PF_CHANGE_ADD_TAIL,
158 PF_CHANGE_ADD_BEFORE, PF_CHANGE_ADD_AFTER,
159 PF_CHANGE_REMOVE, PF_CHANGE_GET_TICKET };
160 enum { PF_GET_NONE, PF_GET_CLR_CNTR };
161
162 /*
163 * Note about PFTM_*: real indices into pf_rule.timeout[] come before
164 * PFTM_MAX, special cases afterwards. See pf_state_expires().
165 */
166 enum { PFTM_TCP_FIRST_PACKET, PFTM_TCP_OPENING, PFTM_TCP_ESTABLISHED,
167 PFTM_TCP_CLOSING, PFTM_TCP_FIN_WAIT, PFTM_TCP_CLOSED,
168 PFTM_UDP_FIRST_PACKET, PFTM_UDP_SINGLE, PFTM_UDP_MULTIPLE,
169 PFTM_ICMP_FIRST_PACKET, PFTM_ICMP_ERROR_REPLY,
170 #ifndef NO_APPLE_EXTENSIONS
171 PFTM_GREv1_FIRST_PACKET, PFTM_GREv1_INITIATING, PFTM_GREv1_ESTABLISHED,
172 PFTM_ESP_FIRST_PACKET, PFTM_ESP_INITIATING, PFTM_ESP_ESTABLISHED,
173 #endif
174 PFTM_OTHER_FIRST_PACKET, PFTM_OTHER_SINGLE,
175 PFTM_OTHER_MULTIPLE, PFTM_FRAG, PFTM_INTERVAL,
176 PFTM_ADAPTIVE_START, PFTM_ADAPTIVE_END, PFTM_SRC_NODE,
177 PFTM_TS_DIFF, PFTM_MAX, PFTM_PURGE, PFTM_UNLINKED,
178 PFTM_UNTIL_PACKET };
179
180 /* PFTM default values */
181 #define PFTM_TCP_FIRST_PACKET_VAL 120 /* First TCP packet */
182 #define PFTM_TCP_OPENING_VAL 30 /* No response yet */
183 #define PFTM_TCP_ESTABLISHED_VAL (24 * 60 * 60) /* Established */
184 #define PFTM_TCP_CLOSING_VAL (15 * 60) /* Half closed */
185 #define PFTM_TCP_FIN_WAIT_VAL 45 /* Got both FINs */
186 #define PFTM_TCP_CLOSED_VAL 90 /* Got a RST */
187 #define PFTM_UDP_FIRST_PACKET_VAL 60 /* First UDP packet */
188 #define PFTM_UDP_SINGLE_VAL 30 /* Unidirectional */
189 #define PFTM_UDP_MULTIPLE_VAL 60 /* Bidirectional */
190 #define PFTM_ICMP_FIRST_PACKET_VAL 20 /* First ICMP packet */
191 #define PFTM_ICMP_ERROR_REPLY_VAL 10 /* Got error response */
192 #ifndef NO_APPLE_EXTENSIONS
193 #define PFTM_GREv1_FIRST_PACKET_VAL 120
194 #define PFTM_GREv1_INITIATING_VAL 30
195 #define PFTM_GREv1_ESTABLISHED_VAL 1800
196 #define PFTM_ESP_FIRST_PACKET_VAL 120
197 #define PFTM_ESP_INITIATING_VAL 30
198 #define PFTM_ESP_ESTABLISHED_VAL 900
199 #endif
200 #define PFTM_OTHER_FIRST_PACKET_VAL 60 /* First packet */
201 #define PFTM_OTHER_SINGLE_VAL 30 /* Unidirectional */
202 #define PFTM_OTHER_MULTIPLE_VAL 60 /* Bidirectional */
203 #define PFTM_FRAG_VAL 30 /* Fragment expire */
204 #define PFTM_INTERVAL_VAL 10 /* Expire interval */
205 #define PFTM_SRC_NODE_VAL 0 /* Source tracking */
206 #define PFTM_TS_DIFF_VAL 30 /* Allowed TS diff */
207
208 enum { PF_NOPFROUTE, PF_FASTROUTE, PF_ROUTETO, PF_DUPTO, PF_REPLYTO };
209 enum { PF_LIMIT_STATES,
210 #ifndef NO_APPLE_EXTENSIONS
211 PF_LIMIT_APP_STATES,
212 #endif
213 PF_LIMIT_SRC_NODES, PF_LIMIT_FRAGS,
214 PF_LIMIT_TABLES, PF_LIMIT_TABLE_ENTRIES, PF_LIMIT_MAX };
215 #define PF_POOL_IDMASK 0x0f
216 enum { PF_POOL_NONE, PF_POOL_BITMASK, PF_POOL_RANDOM,
217 PF_POOL_SRCHASH, PF_POOL_ROUNDROBIN };
218 enum { PF_ADDR_ADDRMASK, PF_ADDR_NOROUTE, PF_ADDR_DYNIFTL,
219 PF_ADDR_TABLE, PF_ADDR_RTLABEL, PF_ADDR_URPFFAILED,
220 PF_ADDR_RANGE };
221 #define PF_POOL_TYPEMASK 0x0f
222 #define PF_POOL_STICKYADDR 0x20
223 #define PF_WSCALE_FLAG 0x80
224 #define PF_WSCALE_MASK 0x0f
225
226 #define PF_LOG 0x01
227 #define PF_LOG_ALL 0x02
228 #define PF_LOG_SOCKET_LOOKUP 0x04
229
230 struct pf_addr {
231 union {
232 struct in_addr v4;
233 struct in6_addr v6;
234 u_int8_t addr8[16];
235 u_int16_t addr16[8];
236 u_int32_t addr32[4];
237 } pfa; /* 128-bit address */
238 #define v4 pfa.v4
239 #define v6 pfa.v6
240 #define addr8 pfa.addr8
241 #define addr16 pfa.addr16
242 #define addr32 pfa.addr32
243 };
244
245 #define PF_TABLE_NAME_SIZE 32
246
247 #define PFI_AFLAG_NETWORK 0x01
248 #define PFI_AFLAG_BROADCAST 0x02
249 #define PFI_AFLAG_PEER 0x04
250 #define PFI_AFLAG_MODEMASK 0x07
251 #define PFI_AFLAG_NOALIAS 0x08
252
253 #ifndef RTLABEL_LEN
254 #define RTLABEL_LEN 32
255 #endif
256
257 struct pf_addr_wrap {
258 union {
259 struct {
260 struct pf_addr addr;
261 struct pf_addr mask;
262 } a;
263 char ifname[IFNAMSIZ];
264 char tblname[PF_TABLE_NAME_SIZE];
265 char rtlabelname[RTLABEL_LEN];
266 u_int32_t rtlabel;
267 } v;
268 union {
269 struct pfi_dynaddr *dyn __attribute__((aligned(8)));
270 struct pfr_ktable *tbl __attribute__((aligned(8)));
271 int dyncnt __attribute__((aligned(8)));
272 int tblcnt __attribute__((aligned(8)));
273 } p __attribute__((aligned(8)));
274 u_int8_t type; /* PF_ADDR_* */
275 u_int8_t iflags; /* PFI_AFLAG_* */
276 };
277
278 #ifndef NO_APPLE_EXTENSIONS
279 struct pf_port_range {
280 u_int16_t port[2];
281 u_int8_t op;
282 };
283
284 union pf_rule_xport {
285 struct pf_port_range range;
286 u_int16_t call_id;
287 u_int32_t spi;
288 };
289 #endif
290
291 #ifdef KERNEL
292 struct pfi_dynaddr {
293 TAILQ_ENTRY(pfi_dynaddr) entry;
294 struct pf_addr pfid_addr4;
295 struct pf_addr pfid_mask4;
296 struct pf_addr pfid_addr6;
297 struct pf_addr pfid_mask6;
298 struct pfr_ktable *pfid_kt;
299 struct pfi_kif *pfid_kif;
300 void *pfid_hook_cookie;
301 int pfid_net; /* mask or 128 */
302 int pfid_acnt4; /* address count IPv4 */
303 int pfid_acnt6; /* address count IPv6 */
304 sa_family_t pfid_af; /* rule af */
305 u_int8_t pfid_iflags; /* PFI_AFLAG_* */
306 };
307
308 /*
309 * Address manipulation macros
310 */
311
312 #if INET
313 #if !INET6
314 #define PF_INET_ONLY
315 #endif /* ! INET6 */
316 #endif /* INET */
317
318 #if INET6
319 #if !INET
320 #define PF_INET6_ONLY
321 #endif /* ! INET */
322 #endif /* INET6 */
323
324 #if INET
325 #if INET6
326 #define PF_INET_INET6
327 #endif /* INET6 */
328 #endif /* INET */
329
330 #else
331
332 #define PF_INET_INET6
333
334 #endif /* KERNEL */
335
336 /* Both IPv4 and IPv6 */
337 #ifdef PF_INET_INET6
338
339 #define PF_AEQ(a, b, c) \
340 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \
341 ((a)->addr32[3] == (b)->addr32[3] && \
342 (a)->addr32[2] == (b)->addr32[2] && \
343 (a)->addr32[1] == (b)->addr32[1] && \
344 (a)->addr32[0] == (b)->addr32[0])) \
345
346 #define PF_ANEQ(a, b, c) \
347 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \
348 ((a)->addr32[3] != (b)->addr32[3] || \
349 (a)->addr32[2] != (b)->addr32[2] || \
350 (a)->addr32[1] != (b)->addr32[1] || \
351 (a)->addr32[0] != (b)->addr32[0])) \
352
353 #define PF_AZERO(a, c) \
354 ((c == AF_INET && !(a)->addr32[0]) || \
355 (!(a)->addr32[0] && !(a)->addr32[1] && \
356 !(a)->addr32[2] && !(a)->addr32[3])) \
357
358 #define PF_MATCHA(n, a, m, b, f) \
359 pf_match_addr(n, a, m, b, f)
360
361 #define PF_ACPY(a, b, f) \
362 pf_addrcpy(a, b, f)
363
364 #define PF_AINC(a, f) \
365 pf_addr_inc(a, f)
366
367 #define PF_POOLMASK(a, b, c, d, f) \
368 pf_poolmask(a, b, c, d, f)
369
370 #else
371
372 /* Just IPv6 */
373
374 #ifdef PF_INET6_ONLY
375
376 #define PF_AEQ(a, b, c) \
377 ((a)->addr32[3] == (b)->addr32[3] && \
378 (a)->addr32[2] == (b)->addr32[2] && \
379 (a)->addr32[1] == (b)->addr32[1] && \
380 (a)->addr32[0] == (b)->addr32[0]) \
381
382 #define PF_ANEQ(a, b, c) \
383 ((a)->addr32[3] != (b)->addr32[3] || \
384 (a)->addr32[2] != (b)->addr32[2] || \
385 (a)->addr32[1] != (b)->addr32[1] || \
386 (a)->addr32[0] != (b)->addr32[0]) \
387
388 #define PF_AZERO(a, c) \
389 (!(a)->addr32[0] && \
390 !(a)->addr32[1] && \
391 !(a)->addr32[2] && \
392 !(a)->addr32[3]) \
393
394 #define PF_MATCHA(n, a, m, b, f) \
395 pf_match_addr(n, a, m, b, f)
396
397 #define PF_ACPY(a, b, f) \
398 pf_addrcpy(a, b, f)
399
400 #define PF_AINC(a, f) \
401 pf_addr_inc(a, f)
402
403 #define PF_POOLMASK(a, b, c, d, f) \
404 pf_poolmask(a, b, c, d, f)
405
406 #else
407
408 /* Just IPv4 */
409 #ifdef PF_INET_ONLY
410
411 #define PF_AEQ(a, b, c) \
412 ((a)->addr32[0] == (b)->addr32[0])
413
414 #define PF_ANEQ(a, b, c) \
415 ((a)->addr32[0] != (b)->addr32[0])
416
417 #define PF_AZERO(a, c) \
418 (!(a)->addr32[0])
419
420 #define PF_MATCHA(n, a, m, b, f) \
421 pf_match_addr(n, a, m, b, f)
422
423 #define PF_ACPY(a, b, f) \
424 (a)->v4.s_addr = (b)->v4.s_addr
425
426 #define PF_AINC(a, f) \
427 do { \
428 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \
429 } while (0)
430
431 #define PF_POOLMASK(a, b, c, d, f) \
432 do { \
433 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \
434 (((c)->addr32[0] ^ 0xffffffff) & (d)->addr32[0]); \
435 } while (0)
436
437 #endif /* PF_INET_ONLY */
438 #endif /* PF_INET6_ONLY */
439 #endif /* PF_INET_INET6 */
440
441 #define PF_MISMATCHAW(aw, x, af, neg, ifp) \
442 ( \
443 (((aw)->type == PF_ADDR_NOROUTE && \
444 pf_routable((x), (af), NULL)) || \
445 (((aw)->type == PF_ADDR_URPFFAILED && (ifp) != NULL && \
446 pf_routable((x), (af), (ifp))) || \
447 ((aw)->type == PF_ADDR_RTLABEL && \
448 !pf_rtlabel_match((x), (af), (aw))) || \
449 ((aw)->type == PF_ADDR_TABLE && \
450 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \
451 ((aw)->type == PF_ADDR_DYNIFTL && \
452 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \
453 ((aw)->type == PF_ADDR_RANGE && \
454 !pf_match_addr_range(&(aw)->v.a.addr, \
455 &(aw)->v.a.mask, (x), (af))) || \
456 ((aw)->type == PF_ADDR_ADDRMASK && \
457 !PF_AZERO(&(aw)->v.a.mask, (af)) && \
458 !PF_MATCHA(0, &(aw)->v.a.addr, \
459 &(aw)->v.a.mask, (x), (af))))) != \
460 (neg) \
461 )
462
463
464 struct pf_rule_uid {
465 uid_t uid[2];
466 u_int8_t op;
467 u_int8_t _pad[3];
468 };
469
470 struct pf_rule_gid {
471 uid_t gid[2];
472 u_int8_t op;
473 u_int8_t _pad[3];
474 };
475
476 struct pf_rule_addr {
477 struct pf_addr_wrap addr;
478 #ifndef NO_APPLE_EXTENSIONS
479 union pf_rule_xport xport;
480 u_int8_t neg;
481 #else
482 u_int16_t port[2];
483 u_int8_t neg;
484 u_int8_t port_op;
485 #endif
486 };
487
488 struct pf_pooladdr {
489 struct pf_addr_wrap addr;
490 TAILQ_ENTRY(pf_pooladdr) entries;
491 #if !defined(__LP64__)
492 u_int32_t _pad[2];
493 #endif /* !__LP64__ */
494 char ifname[IFNAMSIZ];
495 struct pfi_kif *kif __attribute__((aligned(8)));
496 };
497
498 TAILQ_HEAD(pf_palist, pf_pooladdr);
499
500 struct pf_poolhashkey {
501 union {
502 u_int8_t key8[16];
503 u_int16_t key16[8];
504 u_int32_t key32[4];
505 } pfk; /* 128-bit hash key */
506 #define key8 pfk.key8
507 #define key16 pfk.key16
508 #define key32 pfk.key32
509 };
510
511 struct pf_pool {
512 struct pf_palist list;
513 #if !defined(__LP64__)
514 u_int32_t _pad[2];
515 #endif /* !__LP64__ */
516 struct pf_pooladdr *cur __attribute__((aligned(8)));
517 struct pf_poolhashkey key __attribute__((aligned(8)));
518 struct pf_addr counter;
519 int tblidx;
520 u_int16_t proxy_port[2];
521 u_int8_t port_op;
522 u_int8_t opts;
523 };
524
525
526 /* A packed Operating System description for fingerprinting */
527 typedef u_int32_t pf_osfp_t;
528 #define PF_OSFP_ANY ((pf_osfp_t)0)
529 #define PF_OSFP_UNKNOWN ((pf_osfp_t)-1)
530 #define PF_OSFP_NOMATCH ((pf_osfp_t)-2)
531
532 struct pf_osfp_entry {
533 SLIST_ENTRY(pf_osfp_entry) fp_entry;
534 #if !defined(__LP64__)
535 u_int32_t _pad;
536 #endif /* !__LP64__ */
537 pf_osfp_t fp_os;
538 int fp_enflags;
539 #define PF_OSFP_EXPANDED 0x001 /* expanded entry */
540 #define PF_OSFP_GENERIC 0x002 /* generic signature */
541 #define PF_OSFP_NODETAIL 0x004 /* no p0f details */
542 #define PF_OSFP_LEN 32
543 char fp_class_nm[PF_OSFP_LEN];
544 char fp_version_nm[PF_OSFP_LEN];
545 char fp_subtype_nm[PF_OSFP_LEN];
546 };
547 #define PF_OSFP_ENTRY_EQ(a, b) \
548 ((a)->fp_os == (b)->fp_os && \
549 memcmp((a)->fp_class_nm, (b)->fp_class_nm, PF_OSFP_LEN) == 0 && \
550 memcmp((a)->fp_version_nm, (b)->fp_version_nm, PF_OSFP_LEN) == 0 && \
551 memcmp((a)->fp_subtype_nm, (b)->fp_subtype_nm, PF_OSFP_LEN) == 0)
552
553 /* handle pf_osfp_t packing */
554 #define _FP_RESERVED_BIT 1 /* For the special negative #defines */
555 #define _FP_UNUSED_BITS 1
556 #define _FP_CLASS_BITS 10 /* OS Class (Windows, Linux) */
557 #define _FP_VERSION_BITS 10 /* OS version (95, 98, NT, 2.4.54, 3.2) */
558 #define _FP_SUBTYPE_BITS 10 /* patch level (NT SP4, SP3, ECN patch) */
559 #define PF_OSFP_UNPACK(osfp, class, version, subtype) do { \
560 (class) = ((osfp) >> (_FP_VERSION_BITS+_FP_SUBTYPE_BITS)) & \
561 ((1 << _FP_CLASS_BITS) - 1); \
562 (version) = ((osfp) >> _FP_SUBTYPE_BITS) & \
563 ((1 << _FP_VERSION_BITS) - 1);\
564 (subtype) = (osfp) & ((1 << _FP_SUBTYPE_BITS) - 1); \
565 } while (0)
566 #define PF_OSFP_PACK(osfp, class, version, subtype) do { \
567 (osfp) = ((class) & ((1 << _FP_CLASS_BITS) - 1)) << (_FP_VERSION_BITS \
568 + _FP_SUBTYPE_BITS); \
569 (osfp) |= ((version) & ((1 << _FP_VERSION_BITS) - 1)) << \
570 _FP_SUBTYPE_BITS; \
571 (osfp) |= (subtype) & ((1 << _FP_SUBTYPE_BITS) - 1); \
572 } while (0)
573
574 /* the fingerprint of an OSes TCP SYN packet */
575 typedef u_int64_t pf_tcpopts_t;
576 struct pf_os_fingerprint {
577 SLIST_HEAD(pf_osfp_enlist, pf_osfp_entry) fp_oses; /* list of matches */
578 pf_tcpopts_t fp_tcpopts; /* packed TCP options */
579 u_int16_t fp_wsize; /* TCP window size */
580 u_int16_t fp_psize; /* ip->ip_len */
581 u_int16_t fp_mss; /* TCP MSS */
582 u_int16_t fp_flags;
583 #define PF_OSFP_WSIZE_MOD 0x0001 /* Window modulus */
584 #define PF_OSFP_WSIZE_DC 0x0002 /* Window don't care */
585 #define PF_OSFP_WSIZE_MSS 0x0004 /* Window multiple of MSS */
586 #define PF_OSFP_WSIZE_MTU 0x0008 /* Window multiple of MTU */
587 #define PF_OSFP_PSIZE_MOD 0x0010 /* packet size modulus */
588 #define PF_OSFP_PSIZE_DC 0x0020 /* packet size don't care */
589 #define PF_OSFP_WSCALE 0x0040 /* TCP window scaling */
590 #define PF_OSFP_WSCALE_MOD 0x0080 /* TCP window scale modulus */
591 #define PF_OSFP_WSCALE_DC 0x0100 /* TCP window scale dont-care */
592 #define PF_OSFP_MSS 0x0200 /* TCP MSS */
593 #define PF_OSFP_MSS_MOD 0x0400 /* TCP MSS modulus */
594 #define PF_OSFP_MSS_DC 0x0800 /* TCP MSS dont-care */
595 #define PF_OSFP_DF 0x1000 /* IPv4 don't fragment bit */
596 #define PF_OSFP_TS0 0x2000 /* Zero timestamp */
597 #define PF_OSFP_INET6 0x4000 /* IPv6 */
598 u_int8_t fp_optcnt; /* TCP option count */
599 u_int8_t fp_wscale; /* TCP window scaling */
600 u_int8_t fp_ttl; /* IPv4 TTL */
601 #define PF_OSFP_MAXTTL_OFFSET 40
602 /* TCP options packing */
603 #define PF_OSFP_TCPOPT_NOP 0x0 /* TCP NOP option */
604 #define PF_OSFP_TCPOPT_WSCALE 0x1 /* TCP window scaling option */
605 #define PF_OSFP_TCPOPT_MSS 0x2 /* TCP max segment size opt */
606 #define PF_OSFP_TCPOPT_SACK 0x3 /* TCP SACK OK option */
607 #define PF_OSFP_TCPOPT_TS 0x4 /* TCP timestamp option */
608 #define PF_OSFP_TCPOPT_BITS 3 /* bits used by each option */
609 #define PF_OSFP_MAX_OPTS \
610 (sizeof(((struct pf_os_fingerprint *)0)->fp_tcpopts) * 8) \
611 / PF_OSFP_TCPOPT_BITS
612
613 SLIST_ENTRY(pf_os_fingerprint) fp_next;
614 };
615
616 struct pf_osfp_ioctl {
617 struct pf_osfp_entry fp_os;
618 pf_tcpopts_t fp_tcpopts; /* packed TCP options */
619 u_int16_t fp_wsize; /* TCP window size */
620 u_int16_t fp_psize; /* ip->ip_len */
621 u_int16_t fp_mss; /* TCP MSS */
622 u_int16_t fp_flags;
623 u_int8_t fp_optcnt; /* TCP option count */
624 u_int8_t fp_wscale; /* TCP window scaling */
625 u_int8_t fp_ttl; /* IPv4 TTL */
626
627 int fp_getnum; /* DIOCOSFPGET number */
628 };
629
630
631 union pf_rule_ptr {
632 struct pf_rule *ptr __attribute__((aligned(8)));
633 u_int32_t nr __attribute__((aligned(8)));
634 } __attribute__((aligned(8)));
635
636 #define PF_ANCHOR_NAME_SIZE 64
637
638 struct pf_rule {
639 struct pf_rule_addr src;
640 struct pf_rule_addr dst;
641 #define PF_SKIP_IFP 0
642 #define PF_SKIP_DIR 1
643 #define PF_SKIP_AF 2
644 #define PF_SKIP_PROTO 3
645 #define PF_SKIP_SRC_ADDR 4
646 #define PF_SKIP_SRC_PORT 5
647 #define PF_SKIP_DST_ADDR 6
648 #define PF_SKIP_DST_PORT 7
649 #define PF_SKIP_COUNT 8
650 union pf_rule_ptr skip[PF_SKIP_COUNT];
651 #define PF_RULE_LABEL_SIZE 64
652 char label[PF_RULE_LABEL_SIZE];
653 #define PF_QNAME_SIZE 64
654 char ifname[IFNAMSIZ];
655 char qname[PF_QNAME_SIZE];
656 char pqname[PF_QNAME_SIZE];
657 #define PF_TAG_NAME_SIZE 64
658 char tagname[PF_TAG_NAME_SIZE];
659 char match_tagname[PF_TAG_NAME_SIZE];
660
661 char overload_tblname[PF_TABLE_NAME_SIZE];
662
663 TAILQ_ENTRY(pf_rule) entries;
664 #if !defined(__LP64__)
665 u_int32_t _pad[2];
666 #endif /* !__LP64__ */
667 struct pf_pool rpool;
668
669 u_int64_t evaluations;
670 u_int64_t packets[2];
671 u_int64_t bytes[2];
672
673 struct pfi_kif *kif __attribute__((aligned(8)));
674 struct pf_anchor *anchor __attribute__((aligned(8)));
675 struct pfr_ktable *overload_tbl __attribute__((aligned(8)));
676
677 pf_osfp_t os_fingerprint __attribute__((aligned(8)));
678
679 unsigned int rtableid;
680 u_int32_t timeout[PFTM_MAX];
681 u_int32_t states;
682 u_int32_t max_states;
683 u_int32_t src_nodes;
684 u_int32_t max_src_nodes;
685 u_int32_t max_src_states;
686 u_int32_t max_src_conn;
687 struct {
688 u_int32_t limit;
689 u_int32_t seconds;
690 } max_src_conn_rate;
691 u_int32_t qid;
692 u_int32_t pqid;
693 u_int32_t rt_listid;
694 u_int32_t nr;
695 u_int32_t prob;
696 uid_t cuid;
697 pid_t cpid;
698
699 u_int16_t return_icmp;
700 u_int16_t return_icmp6;
701 u_int16_t max_mss;
702 u_int16_t tag;
703 u_int16_t match_tag;
704
705 struct pf_rule_uid uid;
706 struct pf_rule_gid gid;
707
708 u_int32_t rule_flag;
709 u_int8_t action;
710 u_int8_t direction;
711 u_int8_t log;
712 u_int8_t logif;
713 u_int8_t quick;
714 u_int8_t ifnot;
715 u_int8_t match_tag_not;
716 u_int8_t natpass;
717
718 #define PF_STATE_NORMAL 0x1
719 #define PF_STATE_MODULATE 0x2
720 #define PF_STATE_SYNPROXY 0x3
721 u_int8_t keep_state;
722 sa_family_t af;
723 u_int8_t proto;
724 u_int8_t type;
725 u_int8_t code;
726 u_int8_t flags;
727 u_int8_t flagset;
728 u_int8_t min_ttl;
729 u_int8_t allow_opts;
730 u_int8_t rt;
731 u_int8_t return_ttl;
732 u_int8_t tos;
733 u_int8_t anchor_relative;
734 u_int8_t anchor_wildcard;
735
736 #define PF_FLUSH 0x01
737 #define PF_FLUSH_GLOBAL 0x02
738 u_int8_t flush;
739
740 #ifndef NO_APPLE_EXTENSIONS
741 u_int8_t proto_variant;
742 u_int8_t extfilter; /* Filter mode [PF_EXTFILTER_xxx] */
743 u_int8_t extmap; /* Mapping mode [PF_EXTMAP_xxx] */
744 #endif
745 };
746
747 /* rule flags */
748 #define PFRULE_DROP 0x0000
749 #define PFRULE_RETURNRST 0x0001
750 #define PFRULE_FRAGMENT 0x0002
751 #define PFRULE_RETURNICMP 0x0004
752 #define PFRULE_RETURN 0x0008
753 #define PFRULE_NOSYNC 0x0010
754 #define PFRULE_SRCTRACK 0x0020 /* track source states */
755 #define PFRULE_RULESRCTRACK 0x0040 /* per rule */
756
757 /* scrub flags */
758 #define PFRULE_NODF 0x0100
759 #define PFRULE_FRAGCROP 0x0200 /* non-buffering frag cache */
760 #define PFRULE_FRAGDROP 0x0400 /* drop funny fragments */
761 #define PFRULE_RANDOMID 0x0800
762 #define PFRULE_REASSEMBLE_TCP 0x1000
763
764 /* rule flags again */
765 #define PFRULE_IFBOUND 0x00010000 /* if-bound */
766
767 #define PFSTATE_HIWAT 10000 /* default state table size */
768 #define PFSTATE_ADAPT_START 6000 /* default adaptive timeout start */
769 #define PFSTATE_ADAPT_END 12000 /* default adaptive timeout end */
770
771 #ifndef NO_APPLE_EXTENSIONS
772 #define PFAPPSTATE_HIWAT 10000 /* default same as state table */
773
774 enum pf_extmap {
775 PF_EXTMAP_APD = 1, /* Address-port-dependent mapping */
776 PF_EXTMAP_AD, /* Address-dependent mapping */
777 PF_EXTMAP_EI /* Endpoint-independent mapping */
778 };
779
780 enum pf_extfilter {
781 PF_EXTFILTER_APD = 1, /* Address-port-dependent filtering */
782 PF_EXTFILTER_AD, /* Address-dependent filtering */
783 PF_EXTFILTER_EI /* Endpoint-independent filtering */
784 };
785 #endif
786
787 struct pf_threshold {
788 u_int32_t limit;
789 #define PF_THRESHOLD_MULT 1000
790 #define PF_THRESHOLD_MAX 0xffffffff / PF_THRESHOLD_MULT
791 u_int32_t seconds;
792 u_int32_t count;
793 u_int32_t last;
794 };
795
796 struct pf_src_node {
797 RB_ENTRY(pf_src_node) entry;
798 struct pf_addr addr;
799 struct pf_addr raddr;
800 union pf_rule_ptr rule;
801 struct pfi_kif *kif;
802 u_int64_t bytes[2];
803 u_int64_t packets[2];
804 u_int32_t states;
805 u_int32_t conn;
806 struct pf_threshold conn_rate;
807 u_int64_t creation;
808 u_int64_t expire;
809 sa_family_t af;
810 u_int8_t ruletype;
811 };
812
813 #define PFSNODE_HIWAT 10000 /* default source node table size */
814
815 struct pf_state_scrub {
816 struct timeval pfss_last; /* time received last packet */
817 u_int32_t pfss_tsecr; /* last echoed timestamp */
818 u_int32_t pfss_tsval; /* largest timestamp */
819 u_int32_t pfss_tsval0; /* original timestamp */
820 u_int16_t pfss_flags;
821 #define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */
822 #define PFSS_PAWS 0x0010 /* stricter PAWS checks */
823 #define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */
824 #define PFSS_DATA_TS 0x0040 /* timestamp on data packets */
825 #define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */
826 u_int8_t pfss_ttl; /* stashed TTL */
827 u_int8_t pad;
828 u_int32_t pfss_ts_mod; /* timestamp modulation */
829 };
830
831 #ifndef NO_APPLE_EXTENSIONS
832 union pf_state_xport {
833 u_int16_t port;
834 u_int16_t call_id;
835 u_int32_t spi;
836 };
837
838 struct pf_state_host {
839 struct pf_addr addr;
840 union pf_state_xport xport;
841 };
842 #else
843 struct pf_state_host {
844 struct pf_addr addr;
845 u_int16_t port;
846 u_int16_t pad;
847 };
848 #endif
849
850 struct pf_state_peer {
851 u_int32_t seqlo; /* Max sequence number sent */
852 u_int32_t seqhi; /* Max the other end ACKd + win */
853 u_int32_t seqdiff; /* Sequence number modulator */
854 u_int16_t max_win; /* largest window (pre scaling) */
855 u_int8_t state; /* active state level */
856 u_int8_t wscale; /* window scaling factor */
857 u_int16_t mss; /* Maximum segment size option */
858 u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */
859 struct pf_state_scrub *scrub; /* state is scrubbed */
860 u_int8_t pad[3];
861 };
862
863 TAILQ_HEAD(pf_state_queue, pf_state);
864
865 #ifndef NO_APPLE_EXTENSIONS
866 #ifdef KERNEL
867 struct pf_state;
868 struct pf_pdesc;
869 struct pf_app_state;
870
871 typedef void (*pf_app_handler)(struct pf_state *, int, int, struct pf_pdesc *,
872 struct pfi_kif *);
873
874 typedef int (*pf_app_compare)(struct pf_app_state *, struct pf_app_state *);
875
876 struct pf_pptp_state {
877 struct pf_state *grev1_state;
878 };
879
880 struct pf_ike_state {
881 u_int64_t cookie;
882 };
883
884 struct pf_app_state {
885 pf_app_handler handler;
886 pf_app_compare compare_lan_ext;
887 pf_app_compare compare_ext_gwy;
888 union {
889 struct pf_pptp_state pptp;
890 struct pf_ike_state ike;
891 } u;
892 };
893 #endif /* KERNEL */
894 #define PF_GRE_PPTP_VARIANT 0x01
895 #endif
896
897 /* keep synced with struct pf_state, used in RB_FIND */
898 struct pf_state_key_cmp {
899 struct pf_state_host lan;
900 struct pf_state_host gwy;
901 struct pf_state_host ext;
902 sa_family_t af;
903 u_int8_t proto;
904 u_int8_t direction;
905 #ifndef NO_APPLE_EXTENSIONS
906 u_int8_t proto_variant;
907 struct pf_app_state *app_state;
908 #else
909 u_int8_t pad;
910 #endif
911 };
912
913 TAILQ_HEAD(pf_statelist, pf_state);
914
915 struct pf_state_key {
916 struct pf_state_host lan;
917 struct pf_state_host gwy;
918 struct pf_state_host ext;
919 sa_family_t af;
920 u_int8_t proto;
921 u_int8_t direction;
922 #ifndef NO_APPLE_EXTENSIONS
923 u_int8_t proto_variant;
924 struct pf_app_state *app_state;
925 #else
926 u_int8_t pad;
927 #endif
928
929 RB_ENTRY(pf_state_key) entry_lan_ext;
930 RB_ENTRY(pf_state_key) entry_ext_gwy;
931 struct pf_statelist states;
932 u_short refcnt; /* same size as if_index */
933 };
934
935
936 /* keep synced with struct pf_state, used in RB_FIND */
937 struct pf_state_cmp {
938 u_int64_t id;
939 u_int32_t creatorid;
940 u_int32_t pad;
941 };
942
943 struct hook_desc;
944 TAILQ_HEAD(hook_desc_head, hook_desc);
945
946 struct pf_state {
947 u_int64_t id;
948 u_int32_t creatorid;
949 u_int32_t pad;
950
951 TAILQ_ENTRY(pf_state) entry_list;
952 TAILQ_ENTRY(pf_state) next;
953 RB_ENTRY(pf_state) entry_id;
954 struct pf_state_peer src;
955 struct pf_state_peer dst;
956 union pf_rule_ptr rule;
957 union pf_rule_ptr anchor;
958 union pf_rule_ptr nat_rule;
959 struct pf_addr rt_addr;
960 #ifndef NO_APPLE_EXTENSIONS
961 struct hook_desc_head unlink_hooks;
962 #endif
963 struct pf_state_key *state_key;
964 struct pfi_kif *kif;
965 struct pfi_kif *rt_kif;
966 struct pf_src_node *src_node;
967 struct pf_src_node *nat_src_node;
968 u_int64_t packets[2];
969 u_int64_t bytes[2];
970 u_int64_t creation;
971 u_int64_t expire;
972 u_int64_t pfsync_time;
973 u_int16_t tag;
974 u_int8_t log;
975 u_int8_t allow_opts;
976 u_int8_t timeout;
977 u_int8_t sync_flags;
978 #define PFSTATE_NOSYNC 0x01
979 #define PFSTATE_FROMSYNC 0x02
980 #define PFSTATE_STALE 0x04
981 };
982
983 #define __packed __attribute__((__packed__))
984
985 /*
986 * Unified state structures for pulling states out of the kernel
987 * used by pfsync(4) and the pf(4) ioctl.
988 */
989 struct pfsync_state_scrub {
990 u_int16_t pfss_flags;
991 u_int8_t pfss_ttl; /* stashed TTL */
992 #define PFSYNC_SCRUB_FLAG_VALID 0x01
993 u_int8_t scrub_flag;
994 u_int32_t pfss_ts_mod; /* timestamp modulation */
995 } __packed;
996
997 struct pfsync_state_host {
998 struct pf_addr addr;
999 #ifndef NO_APPLE_EXTENSIONS
1000 union pf_state_xport xport;
1001 u_int16_t pad[2];
1002 #else
1003 u_int16_t port;
1004 u_int16_t pad[3];
1005 #endif
1006 } __packed;
1007
1008 struct pfsync_state_peer {
1009 struct pfsync_state_scrub scrub; /* state is scrubbed */
1010 u_int32_t seqlo; /* Max sequence number sent */
1011 u_int32_t seqhi; /* Max the other end ACKd + win */
1012 u_int32_t seqdiff; /* Sequence number modulator */
1013 u_int16_t max_win; /* largest window (pre scaling) */
1014 u_int16_t mss; /* Maximum segment size option */
1015 u_int8_t state; /* active state level */
1016 u_int8_t wscale; /* window scaling factor */
1017 u_int8_t pad[6];
1018 } __packed;
1019
1020 struct pfsync_state {
1021 u_int32_t id[2];
1022 char ifname[IFNAMSIZ];
1023 struct pfsync_state_host lan;
1024 struct pfsync_state_host gwy;
1025 struct pfsync_state_host ext;
1026 struct pfsync_state_peer src;
1027 struct pfsync_state_peer dst;
1028 struct pf_addr rt_addr;
1029 #ifndef NO_APPLE_EXTENSIONS
1030 struct hook_desc_head unlink_hooks;
1031 #if !defined(__LP64__)
1032 u_int32_t _pad[2];
1033 #endif /* !__LP64__ */
1034 #endif
1035 u_int32_t rule;
1036 u_int32_t anchor;
1037 u_int32_t nat_rule;
1038 u_int64_t creation;
1039 u_int64_t expire;
1040 u_int32_t packets[2][2];
1041 u_int32_t bytes[2][2];
1042 u_int32_t creatorid;
1043 #ifndef NO_APPLE_EXTENSIONS
1044 u_int16_t tag;
1045 #endif
1046 sa_family_t af;
1047 u_int8_t proto;
1048 u_int8_t direction;
1049 u_int8_t log;
1050 u_int8_t allow_opts;
1051 u_int8_t timeout;
1052 u_int8_t sync_flags;
1053 u_int8_t updates;
1054 #ifndef NO_APPLE_EXTENSIONS
1055 u_int8_t proto_variant;
1056 #endif
1057 } __packed;
1058
1059 #define PFSYNC_FLAG_COMPRESS 0x01
1060 #define PFSYNC_FLAG_STALE 0x02
1061 #define PFSYNC_FLAG_SRCNODE 0x04
1062 #define PFSYNC_FLAG_NATSRCNODE 0x08
1063
1064 /* for copies to/from userland via pf_ioctl() */
1065 #define pf_state_peer_to_pfsync(s, d) do { \
1066 (d)->seqlo = (s)->seqlo; \
1067 (d)->seqhi = (s)->seqhi; \
1068 (d)->seqdiff = (s)->seqdiff; \
1069 (d)->max_win = (s)->max_win; \
1070 (d)->mss = (s)->mss; \
1071 (d)->state = (s)->state; \
1072 (d)->wscale = (s)->wscale; \
1073 if ((s)->scrub) { \
1074 (d)->scrub.pfss_flags = \
1075 (s)->scrub->pfss_flags & PFSS_TIMESTAMP; \
1076 (d)->scrub.pfss_ttl = (s)->scrub->pfss_ttl; \
1077 (d)->scrub.pfss_ts_mod = (s)->scrub->pfss_ts_mod; \
1078 (d)->scrub.scrub_flag = PFSYNC_SCRUB_FLAG_VALID; \
1079 } \
1080 } while (0)
1081
1082 #define pf_state_peer_from_pfsync(s, d) do { \
1083 (d)->seqlo = (s)->seqlo; \
1084 (d)->seqhi = (s)->seqhi; \
1085 (d)->seqdiff = (s)->seqdiff; \
1086 (d)->max_win = (s)->max_win; \
1087 (d)->mss = ntohs((s)->mss); \
1088 (d)->state = (s)->state; \
1089 (d)->wscale = (s)->wscale; \
1090 if ((s)->scrub.scrub_flag == PFSYNC_SCRUB_FLAG_VALID && \
1091 (d)->scrub != NULL) { \
1092 (d)->scrub->pfss_flags = \
1093 ntohs((s)->scrub.pfss_flags) & PFSS_TIMESTAMP; \
1094 (d)->scrub->pfss_ttl = (s)->scrub.pfss_ttl; \
1095 (d)->scrub->pfss_ts_mod = (s)->scrub.pfss_ts_mod; \
1096 } \
1097 } while (0)
1098
1099 #define pf_state_counter_to_pfsync(s, d) do { \
1100 d[0] = (s>>32)&0xffffffff; \
1101 d[1] = s&0xffffffff; \
1102 } while (0)
1103
1104 #define pf_state_counter_from_pfsync(s) \
1105 (((u_int64_t)(s[0])<<32) | (u_int64_t)(s[1]))
1106
1107
1108
1109 TAILQ_HEAD(pf_rulequeue, pf_rule);
1110
1111 struct pf_anchor;
1112
1113 struct pf_ruleset {
1114 struct {
1115 struct pf_rulequeue queues[2];
1116 struct {
1117 struct pf_rulequeue *ptr;
1118 struct pf_rule **ptr_array;
1119 u_int32_t rcount;
1120 u_int32_t ticket;
1121 int open;
1122 } active, inactive;
1123 } rules[PF_RULESET_MAX];
1124 struct pf_anchor *anchor;
1125 u_int32_t tticket;
1126 int tables;
1127 int topen;
1128 };
1129
1130 RB_HEAD(pf_anchor_global, pf_anchor);
1131 RB_HEAD(pf_anchor_node, pf_anchor);
1132 struct pf_anchor {
1133 RB_ENTRY(pf_anchor) entry_global;
1134 RB_ENTRY(pf_anchor) entry_node;
1135 struct pf_anchor *parent;
1136 struct pf_anchor_node children;
1137 char name[PF_ANCHOR_NAME_SIZE];
1138 char path[MAXPATHLEN];
1139 struct pf_ruleset ruleset;
1140 int refcnt; /* anchor rules */
1141 int match;
1142 };
1143 #ifdef KERNEL
1144 RB_PROTOTYPE_SC(__private_extern__, pf_anchor_global, pf_anchor, entry_global,
1145 pf_anchor_compare);
1146 RB_PROTOTYPE_SC(__private_extern__, pf_anchor_node, pf_anchor, entry_node,
1147 pf_anchor_compare);
1148 #else /* !KERNEL */
1149 RB_PROTOTYPE(pf_anchor_global, pf_anchor, entry_global, pf_anchor_compare);
1150 RB_PROTOTYPE(pf_anchor_node, pf_anchor, entry_node, pf_anchor_compare);
1151 #endif /* !KERNEL */
1152
1153 #define PF_RESERVED_ANCHOR "_pf"
1154
1155 #define PFR_TFLAG_PERSIST 0x00000001
1156 #define PFR_TFLAG_CONST 0x00000002
1157 #define PFR_TFLAG_ACTIVE 0x00000004
1158 #define PFR_TFLAG_INACTIVE 0x00000008
1159 #define PFR_TFLAG_REFERENCED 0x00000010
1160 #define PFR_TFLAG_REFDANCHOR 0x00000020
1161 #define PFR_TFLAG_USRMASK 0x00000003
1162 #define PFR_TFLAG_SETMASK 0x0000003C
1163 #define PFR_TFLAG_ALLMASK 0x0000003F
1164
1165 struct pfr_table {
1166 char pfrt_anchor[MAXPATHLEN];
1167 char pfrt_name[PF_TABLE_NAME_SIZE];
1168 u_int32_t pfrt_flags;
1169 u_int8_t pfrt_fback;
1170 };
1171
1172 enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED,
1173 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE,
1174 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_MAX };
1175
1176 struct pfr_addr {
1177 union {
1178 struct in_addr _pfra_ip4addr;
1179 struct in6_addr _pfra_ip6addr;
1180 } pfra_u;
1181 u_int8_t pfra_af;
1182 u_int8_t pfra_net;
1183 u_int8_t pfra_not;
1184 u_int8_t pfra_fback;
1185 };
1186 #define pfra_ip4addr pfra_u._pfra_ip4addr
1187 #define pfra_ip6addr pfra_u._pfra_ip6addr
1188
1189 enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX };
1190 enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX };
1191 #define PFR_OP_XPASS PFR_OP_ADDR_MAX
1192
1193 struct pfr_astats {
1194 struct pfr_addr pfras_a;
1195 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
1196 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
1197 u_int64_t pfras_tzero;
1198 };
1199
1200 enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX };
1201
1202 struct pfr_tstats {
1203 struct pfr_table pfrts_t;
1204 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
1205 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
1206 u_int64_t pfrts_match;
1207 u_int64_t pfrts_nomatch;
1208 u_int64_t pfrts_tzero;
1209 int pfrts_cnt;
1210 int pfrts_refcnt[PFR_REFCNT_MAX];
1211 };
1212 #define pfrts_name pfrts_t.pfrt_name
1213 #define pfrts_flags pfrts_t.pfrt_flags
1214
1215 SLIST_HEAD(pfr_kentryworkq, pfr_kentry);
1216 struct pfr_kentry {
1217 struct radix_node pfrke_node[2];
1218 union sockaddr_union pfrke_sa;
1219 u_int64_t pfrke_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
1220 u_int64_t pfrke_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
1221 SLIST_ENTRY(pfr_kentry) pfrke_workq;
1222 u_int64_t pfrke_tzero;
1223 u_int8_t pfrke_af;
1224 u_int8_t pfrke_net;
1225 u_int8_t pfrke_not;
1226 u_int8_t pfrke_mark;
1227 u_int8_t pfrke_intrpool;
1228 };
1229
1230 SLIST_HEAD(pfr_ktableworkq, pfr_ktable);
1231 RB_HEAD(pfr_ktablehead, pfr_ktable);
1232 struct pfr_ktable {
1233 struct pfr_tstats pfrkt_ts;
1234 RB_ENTRY(pfr_ktable) pfrkt_tree;
1235 SLIST_ENTRY(pfr_ktable) pfrkt_workq;
1236 struct radix_node_head *pfrkt_ip4;
1237 struct radix_node_head *pfrkt_ip6;
1238 struct pfr_ktable *pfrkt_shadow;
1239 struct pfr_ktable *pfrkt_root;
1240 struct pf_ruleset *pfrkt_rs;
1241 u_int64_t pfrkt_larg;
1242 u_int32_t pfrkt_nflags;
1243 };
1244 #define pfrkt_t pfrkt_ts.pfrts_t
1245 #define pfrkt_name pfrkt_t.pfrt_name
1246 #define pfrkt_anchor pfrkt_t.pfrt_anchor
1247 #define pfrkt_ruleset pfrkt_t.pfrt_ruleset
1248 #define pfrkt_flags pfrkt_t.pfrt_flags
1249 #define pfrkt_cnt pfrkt_ts.pfrts_cnt
1250 #define pfrkt_refcnt pfrkt_ts.pfrts_refcnt
1251 #define pfrkt_packets pfrkt_ts.pfrts_packets
1252 #define pfrkt_bytes pfrkt_ts.pfrts_bytes
1253 #define pfrkt_match pfrkt_ts.pfrts_match
1254 #define pfrkt_nomatch pfrkt_ts.pfrts_nomatch
1255 #define pfrkt_tzero pfrkt_ts.pfrts_tzero
1256
1257 RB_HEAD(pf_state_tree_lan_ext, pf_state_key);
1258 #ifdef KERNEL
1259 RB_PROTOTYPE_SC(__private_extern__, pf_state_tree_lan_ext, pf_state_key,
1260 entry_lan_ext, pf_state_compare_lan_ext);
1261 #else /* !KERNEL */
1262 RB_PROTOTYPE(pf_state_tree_lan_ext, pf_state_key, entry_lan_ext,
1263 pf_state_compare_lan_ext);
1264 #endif /* !KERNEL */
1265
1266 RB_HEAD(pf_state_tree_ext_gwy, pf_state_key);
1267 #ifdef KERNEL
1268 RB_PROTOTYPE_SC(__private_extern__, pf_state_tree_ext_gwy, pf_state_key,
1269 entry_ext_gwy, pf_state_compare_ext_gwy);
1270 #else /* !KERNEL */
1271 RB_PROTOTYPE(pf_state_tree_ext_gwy, pf_state_key, entry_ext_gwy,
1272 pf_state_compare_ext_gwy);
1273 #endif /* !KERNEL */
1274
1275 RB_HEAD(pfi_ifhead, pfi_kif);
1276
1277 /* state tables */
1278 #ifdef KERNEL
1279 __private_extern__ struct pf_state_tree_lan_ext pf_statetbl_lan_ext;
1280 __private_extern__ struct pf_state_tree_ext_gwy pf_statetbl_ext_gwy;
1281 #else /* !KERNEL */
1282 extern struct pf_state_tree_lan_ext pf_statetbl_lan_ext;
1283 extern struct pf_state_tree_ext_gwy pf_statetbl_ext_gwy;
1284 #endif /* !KERNEL */
1285
1286 /* keep synced with pfi_kif, used in RB_FIND */
1287 struct pfi_kif_cmp {
1288 char pfik_name[IFNAMSIZ];
1289 };
1290
1291 struct pfi_kif {
1292 char pfik_name[IFNAMSIZ];
1293 RB_ENTRY(pfi_kif) pfik_tree;
1294 u_int64_t pfik_packets[2][2][2];
1295 u_int64_t pfik_bytes[2][2][2];
1296 u_int64_t pfik_tzero;
1297 int pfik_flags;
1298 void *pfik_ah_cookie;
1299 struct ifnet *pfik_ifp;
1300 int pfik_states;
1301 int pfik_rules;
1302 TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs;
1303 };
1304
1305 enum pfi_kif_refs {
1306 PFI_KIF_REF_NONE,
1307 PFI_KIF_REF_STATE,
1308 PFI_KIF_REF_RULE
1309 };
1310
1311 #define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */
1312
1313 #ifdef KERNEL
1314 struct pf_pdesc {
1315 struct {
1316 int done;
1317 uid_t uid;
1318 gid_t gid;
1319 pid_t pid;
1320 } lookup;
1321 u_int64_t tot_len; /* Make Mickey money */
1322 union {
1323 struct tcphdr *tcp;
1324 struct udphdr *udp;
1325 struct icmp *icmp;
1326 #if INET6
1327 struct icmp6_hdr *icmp6;
1328 #endif /* INET6 */
1329 #ifndef NO_APPLE_EXTENSIONS
1330 struct pf_grev1_hdr *grev1;
1331 struct pf_esp_hdr *esp;
1332 #endif
1333 void *any;
1334 } hdr;
1335 struct pf_addr baddr; /* address before translation */
1336 struct pf_addr naddr; /* address after translation */
1337 struct pf_rule *nat_rule; /* nat/rdr rule applied to packet */
1338 struct pf_addr *src;
1339 struct pf_addr *dst;
1340 struct ether_header
1341 *eh;
1342 #ifndef NO_APPLE_EXTENSIONS
1343 struct mbuf *mp;
1344 int lmw; /* lazy writable offset */
1345 #endif
1346 struct pf_mtag *pf_mtag;
1347 u_int16_t *ip_sum;
1348 u_int32_t p_len; /* total length of payload */
1349 u_int16_t flags; /* Let SCRUB trigger behavior in */
1350 /* state code. Easier than tags */
1351 #define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */
1352 #define PFDESC_IP_REAS 0x0002 /* IP frags would've been reassembled */
1353 sa_family_t af;
1354 u_int8_t proto;
1355 u_int8_t tos;
1356 #ifndef NO_APPLE_EXTENSIONS
1357 u_int8_t proto_variant;
1358 #endif
1359 };
1360 #endif /* KERNEL */
1361
1362 /* flags for RDR options */
1363 #define PF_DPORT_RANGE 0x01 /* Dest port uses range */
1364 #define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */
1365
1366 /* Reasons code for passing/dropping a packet */
1367 #define PFRES_MATCH 0 /* Explicit match of a rule */
1368 #define PFRES_BADOFF 1 /* Bad offset for pull_hdr */
1369 #define PFRES_FRAG 2 /* Dropping following fragment */
1370 #define PFRES_SHORT 3 /* Dropping short packet */
1371 #define PFRES_NORM 4 /* Dropping by normalizer */
1372 #define PFRES_MEMORY 5 /* Dropped due to lacking mem */
1373 #define PFRES_TS 6 /* Bad TCP Timestamp (RFC1323) */
1374 #define PFRES_CONGEST 7 /* Congestion (of ipintrq) */
1375 #define PFRES_IPOPTIONS 8 /* IP option */
1376 #define PFRES_PROTCKSUM 9 /* Protocol checksum invalid */
1377 #define PFRES_BADSTATE 10 /* State mismatch */
1378 #define PFRES_STATEINS 11 /* State insertion failure */
1379 #define PFRES_MAXSTATES 12 /* State limit */
1380 #define PFRES_SRCLIMIT 13 /* Source node/conn limit */
1381 #define PFRES_SYNPROXY 14 /* SYN proxy */
1382 #define PFRES_MAX 15 /* total+1 */
1383
1384 #define PFRES_NAMES { \
1385 "match", \
1386 "bad-offset", \
1387 "fragment", \
1388 "short", \
1389 "normalize", \
1390 "memory", \
1391 "bad-timestamp", \
1392 "congestion", \
1393 "ip-option", \
1394 "proto-cksum", \
1395 "state-mismatch", \
1396 "state-insert", \
1397 "state-limit", \
1398 "src-limit", \
1399 "synproxy", \
1400 NULL \
1401 }
1402
1403 /* Counters for other things we want to keep track of */
1404 #define LCNT_STATES 0 /* states */
1405 #define LCNT_SRCSTATES 1 /* max-src-states */
1406 #define LCNT_SRCNODES 2 /* max-src-nodes */
1407 #define LCNT_SRCCONN 3 /* max-src-conn */
1408 #define LCNT_SRCCONNRATE 4 /* max-src-conn-rate */
1409 #define LCNT_OVERLOAD_TABLE 5 /* entry added to overload table */
1410 #define LCNT_OVERLOAD_FLUSH 6 /* state entries flushed */
1411 #define LCNT_MAX 7 /* total+1 */
1412
1413 #define LCNT_NAMES { \
1414 "max states per rule", \
1415 "max-src-states", \
1416 "max-src-nodes", \
1417 "max-src-conn", \
1418 "max-src-conn-rate", \
1419 "overload table insertion", \
1420 "overload flush states", \
1421 NULL \
1422 }
1423
1424 /* UDP state enumeration */
1425 #define PFUDPS_NO_TRAFFIC 0
1426 #define PFUDPS_SINGLE 1
1427 #define PFUDPS_MULTIPLE 2
1428
1429 #define PFUDPS_NSTATES 3 /* number of state levels */
1430
1431 #define PFUDPS_NAMES { \
1432 "NO_TRAFFIC", \
1433 "SINGLE", \
1434 "MULTIPLE", \
1435 NULL \
1436 }
1437
1438 #ifndef NO_APPLE_EXTENSIONS
1439 /* GREv1 protocol state enumeration */
1440 #define PFGRE1S_NO_TRAFFIC 0
1441 #define PFGRE1S_INITIATING 1
1442 #define PFGRE1S_ESTABLISHED 2
1443
1444 #define PFGRE1S_NSTATES 3 /* number of state levels */
1445
1446 #define PFGRE1S_NAMES { \
1447 "NO_TRAFFIC", \
1448 "INITIATING", \
1449 "ESTABLISHED", \
1450 NULL \
1451 }
1452
1453 #define PFESPS_NO_TRAFFIC 0
1454 #define PFESPS_INITIATING 1
1455 #define PFESPS_ESTABLISHED 2
1456
1457 #define PFESPS_NSTATES 3 /* number of state levels */
1458
1459 #define PFESPS_NAMES { "NO_TRAFFIC", "INITIATING", "ESTABLISHED", NULL }
1460 #endif
1461
1462 /* Other protocol state enumeration */
1463 #define PFOTHERS_NO_TRAFFIC 0
1464 #define PFOTHERS_SINGLE 1
1465 #define PFOTHERS_MULTIPLE 2
1466
1467 #define PFOTHERS_NSTATES 3 /* number of state levels */
1468
1469 #define PFOTHERS_NAMES { \
1470 "NO_TRAFFIC", \
1471 "SINGLE", \
1472 "MULTIPLE", \
1473 NULL \
1474 }
1475
1476 #define FCNT_STATE_SEARCH 0
1477 #define FCNT_STATE_INSERT 1
1478 #define FCNT_STATE_REMOVALS 2
1479 #define FCNT_MAX 3
1480
1481 #define SCNT_SRC_NODE_SEARCH 0
1482 #define SCNT_SRC_NODE_INSERT 1
1483 #define SCNT_SRC_NODE_REMOVALS 2
1484 #define SCNT_MAX 3
1485
1486 #define ACTION_SET(a, x) \
1487 do { \
1488 if ((a) != NULL) \
1489 *(a) = (x); \
1490 } while (0)
1491
1492 #define REASON_SET(a, x) \
1493 do { \
1494 if ((a) != NULL) \
1495 *(a) = (x); \
1496 if (x < PFRES_MAX) \
1497 pf_status.counters[x]++; \
1498 } while (0)
1499
1500 struct pf_status {
1501 u_int64_t counters[PFRES_MAX];
1502 u_int64_t lcounters[LCNT_MAX]; /* limit counters */
1503 u_int64_t fcounters[FCNT_MAX];
1504 u_int64_t scounters[SCNT_MAX];
1505 u_int64_t pcounters[2][2][3];
1506 u_int64_t bcounters[2][2];
1507 u_int64_t stateid;
1508 u_int32_t running;
1509 u_int32_t states;
1510 u_int32_t src_nodes;
1511 u_int64_t since __attribute__((aligned(8)));
1512 u_int32_t debug;
1513 u_int32_t hostid;
1514 char ifname[IFNAMSIZ];
1515 u_int8_t pf_chksum[PF_MD5_DIGEST_LENGTH];
1516 };
1517
1518 struct cbq_opts {
1519 u_int minburst;
1520 u_int maxburst;
1521 u_int pktsize;
1522 u_int maxpktsize;
1523 u_int ns_per_byte;
1524 u_int maxidle;
1525 int minidle;
1526 u_int offtime;
1527 int flags;
1528 };
1529
1530 struct priq_opts {
1531 int flags;
1532 };
1533
1534 struct hfsc_opts {
1535 /* real-time service curve */
1536 u_int rtsc_m1; /* slope of the 1st segment in bps */
1537 u_int rtsc_d; /* the x-projection of m1 in msec */
1538 u_int rtsc_m2; /* slope of the 2nd segment in bps */
1539 /* link-sharing service curve */
1540 u_int lssc_m1;
1541 u_int lssc_d;
1542 u_int lssc_m2;
1543 /* upper-limit service curve */
1544 u_int ulsc_m1;
1545 u_int ulsc_d;
1546 u_int ulsc_m2;
1547 int flags;
1548 };
1549
1550 struct pf_altq {
1551 char ifname[IFNAMSIZ];
1552
1553 void *altq_disc; /* discipline-specific state */
1554 #if !defined(__LP64__)
1555 u_int32_t _pad;
1556 #endif /* !__LP64__ */
1557 TAILQ_ENTRY(pf_altq) entries;
1558 #if !defined(__LP64__)
1559 u_int32_t __pad[2];
1560 #endif /* !__LP64__ */
1561
1562 /* scheduler spec */
1563 u_int8_t scheduler; /* scheduler type */
1564 u_int16_t tbrsize; /* tokenbucket regulator size */
1565 u_int32_t ifbandwidth; /* interface bandwidth */
1566
1567 /* queue spec */
1568 char qname[PF_QNAME_SIZE]; /* queue name */
1569 char parent[PF_QNAME_SIZE]; /* parent name */
1570 u_int32_t parent_qid; /* parent queue id */
1571 u_int32_t bandwidth; /* queue bandwidth */
1572 u_int8_t priority; /* priority */
1573 u_int16_t qlimit; /* queue size limit */
1574 u_int16_t flags; /* misc flags */
1575 union {
1576 struct cbq_opts cbq_opts;
1577 struct priq_opts priq_opts;
1578 struct hfsc_opts hfsc_opts;
1579 } pq_u;
1580
1581 u_int32_t qid; /* return value */
1582 };
1583
1584 struct pf_tagname {
1585 TAILQ_ENTRY(pf_tagname) entries;
1586 char name[PF_TAG_NAME_SIZE];
1587 u_int16_t tag;
1588 int ref;
1589 };
1590
1591 #define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */
1592 #define PFFRAG_FRAG_HIWAT 1000 /* Number of fragmented packets */
1593 #define PFFRAG_FRCENT_HIWAT 50000 /* Number of fragment cache entries */
1594 #define PFFRAG_FRCACHE_HIWAT 10000 /* Number of fragment descriptors */
1595
1596 #define PFR_KTABLE_HIWAT 1000 /* Number of tables */
1597 #define PFR_KENTRY_HIWAT 200000 /* Number of table entries */
1598 #define PFR_KENTRY_HIWAT_SMALL 100000 /* Number of table entries (tiny hosts) */
1599
1600 /*
1601 * ioctl parameter structures
1602 */
1603
1604 struct pfioc_pooladdr {
1605 u_int32_t action;
1606 u_int32_t ticket;
1607 u_int32_t nr;
1608 u_int32_t r_num;
1609 u_int8_t r_action;
1610 u_int8_t r_last;
1611 u_int8_t af;
1612 char anchor[MAXPATHLEN];
1613 struct pf_pooladdr addr;
1614 };
1615
1616 struct pfioc_rule {
1617 u_int32_t action;
1618 u_int32_t ticket;
1619 u_int32_t pool_ticket;
1620 u_int32_t nr;
1621 char anchor[MAXPATHLEN];
1622 char anchor_call[MAXPATHLEN];
1623 struct pf_rule rule;
1624 };
1625
1626 struct pfioc_natlook {
1627 struct pf_addr saddr;
1628 struct pf_addr daddr;
1629 struct pf_addr rsaddr;
1630 struct pf_addr rdaddr;
1631 #ifndef NO_APPLE_EXTENSIONS
1632 union pf_state_xport sxport;
1633 union pf_state_xport dxport;
1634 union pf_state_xport rsxport;
1635 union pf_state_xport rdxport;
1636 sa_family_t af;
1637 u_int8_t proto;
1638 u_int8_t proto_variant;
1639 u_int8_t direction;
1640 #else
1641 u_int16_t sport;
1642 u_int16_t dport;
1643 u_int16_t rsport;
1644 u_int16_t rdport;
1645 sa_family_t af;
1646 u_int8_t proto;
1647 u_int8_t direction;
1648 #endif
1649 };
1650
1651 struct pfioc_state {
1652 struct pfsync_state state;
1653 };
1654
1655 struct pfioc_src_node_kill {
1656 /* XXX returns the number of src nodes killed in psnk_af */
1657 sa_family_t psnk_af;
1658 struct pf_rule_addr psnk_src;
1659 struct pf_rule_addr psnk_dst;
1660 };
1661
1662 #ifndef NO_APPLE_EXTENSIONS
1663 struct pfioc_state_addr_kill {
1664 struct pf_addr_wrap addr;
1665 u_int8_t reserved_[3];
1666 u_int8_t neg;
1667 union pf_rule_xport xport;
1668 };
1669 #endif
1670
1671 struct pfioc_state_kill {
1672 /* XXX returns the number of states killed in psk_af */
1673 sa_family_t psk_af;
1674 #ifndef NO_APPLE_EXTENSIONS
1675 u_int8_t psk_proto;
1676 u_int8_t psk_proto_variant;
1677 u_int8_t _pad;
1678 struct pfioc_state_addr_kill psk_src;
1679 struct pfioc_state_addr_kill psk_dst;
1680 #else
1681 int psk_proto;
1682 struct pf_rule_addr psk_src;
1683 struct pf_rule_addr psk_dst;
1684 #endif
1685 char psk_ifname[IFNAMSIZ];
1686 };
1687
1688 struct pfioc_states {
1689 int ps_len;
1690 union {
1691 caddr_t psu_buf;
1692 struct pfsync_state *psu_states;
1693 } ps_u __attribute__((aligned(8)));
1694 #define ps_buf ps_u.psu_buf
1695 #define ps_states ps_u.psu_states
1696 };
1697
1698 struct pfioc_src_nodes {
1699 int psn_len;
1700 union {
1701 caddr_t psu_buf;
1702 struct pf_src_node *psu_src_nodes;
1703 } psn_u __attribute__((aligned(8)));
1704 #define psn_buf psn_u.psu_buf
1705 #define psn_src_nodes psn_u.psu_src_nodes
1706 };
1707
1708 struct pfioc_if {
1709 char ifname[IFNAMSIZ];
1710 };
1711
1712 struct pfioc_tm {
1713 int timeout;
1714 int seconds;
1715 };
1716
1717 struct pfioc_limit {
1718 int index;
1719 unsigned limit;
1720 };
1721
1722 struct pfioc_altq {
1723 u_int32_t action;
1724 u_int32_t ticket;
1725 u_int32_t nr;
1726 struct pf_altq altq __attribute__((aligned(8)));
1727 };
1728
1729 struct pfioc_qstats {
1730 u_int32_t ticket;
1731 u_int32_t nr;
1732 void *buf __attribute__((aligned(8)));
1733 int nbytes __attribute__((aligned(8)));
1734 u_int8_t scheduler;
1735 };
1736
1737 struct pfioc_ruleset {
1738 u_int32_t nr;
1739 char path[MAXPATHLEN];
1740 char name[PF_ANCHOR_NAME_SIZE];
1741 };
1742
1743 #define PF_RULESET_ALTQ (PF_RULESET_MAX)
1744 #define PF_RULESET_TABLE (PF_RULESET_MAX+1)
1745 struct pfioc_trans {
1746 int size; /* number of elements */
1747 int esize; /* size of each element in bytes */
1748 struct pfioc_trans_e {
1749 int rs_num;
1750 char anchor[MAXPATHLEN];
1751 u_int32_t ticket;
1752 } *array __attribute__((aligned(8)));
1753 };
1754
1755 #define PFR_FLAG_ATOMIC 0x00000001
1756 #define PFR_FLAG_DUMMY 0x00000002
1757 #define PFR_FLAG_FEEDBACK 0x00000004
1758 #define PFR_FLAG_CLSTATS 0x00000008
1759 #define PFR_FLAG_ADDRSTOO 0x00000010
1760 #define PFR_FLAG_REPLACE 0x00000020
1761 #define PFR_FLAG_ALLRSETS 0x00000040
1762 #define PFR_FLAG_ALLMASK 0x0000007F
1763 #ifdef KERNEL
1764 #define PFR_FLAG_USERIOCTL 0x10000000
1765 #endif
1766
1767 struct pfioc_table {
1768 struct pfr_table pfrio_table;
1769 void *pfrio_buffer __attribute__((aligned(8)));
1770 int pfrio_esize __attribute__((aligned(8)));
1771 int pfrio_size;
1772 int pfrio_size2;
1773 int pfrio_nadd;
1774 int pfrio_ndel;
1775 int pfrio_nchange;
1776 int pfrio_flags;
1777 u_int32_t pfrio_ticket;
1778 };
1779 #define pfrio_exists pfrio_nadd
1780 #define pfrio_nzero pfrio_nadd
1781 #define pfrio_nmatch pfrio_nadd
1782 #define pfrio_naddr pfrio_size2
1783 #define pfrio_setflag pfrio_size2
1784 #define pfrio_clrflag pfrio_nadd
1785
1786 struct pfioc_iface {
1787 char pfiio_name[IFNAMSIZ];
1788 void *pfiio_buffer __attribute__((aligned(8)));
1789 int pfiio_esize __attribute__((aligned(8)));
1790 int pfiio_size;
1791 int pfiio_nzero;
1792 int pfiio_flags;
1793 };
1794
1795
1796 /*
1797 * ioctl operations
1798 */
1799
1800 #define DIOCSTART _IO ('D', 1)
1801 #define DIOCSTOP _IO ('D', 2)
1802 #define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule)
1803 #define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule)
1804 #define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule)
1805 /* XXX cut 8 - 17 */
1806 #define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill)
1807 #define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state)
1808 #define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if)
1809 #define DIOCGETSTATUS _IOWR('D', 21, struct pf_status)
1810 #define DIOCCLRSTATUS _IO ('D', 22)
1811 #define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook)
1812 #define DIOCSETDEBUG _IOWR('D', 24, u_int32_t)
1813 #define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states)
1814 #define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule)
1815 /* XXX cut 26 - 28 */
1816 #define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm)
1817 #define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm)
1818 #define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state)
1819 #define DIOCCLRRULECTRS _IO ('D', 38)
1820 #define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit)
1821 #define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit)
1822 #define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill)
1823 #define DIOCSTARTALTQ _IO ('D', 42)
1824 #define DIOCSTOPALTQ _IO ('D', 43)
1825 #define DIOCADDALTQ _IOWR('D', 45, struct pfioc_altq)
1826 #define DIOCGETALTQS _IOWR('D', 47, struct pfioc_altq)
1827 #define DIOCGETALTQ _IOWR('D', 48, struct pfioc_altq)
1828 #define DIOCCHANGEALTQ _IOWR('D', 49, struct pfioc_altq)
1829 #define DIOCGETQSTATS _IOWR('D', 50, struct pfioc_qstats)
1830 #define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr)
1831 #define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr)
1832 #define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr)
1833 #define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr)
1834 #define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr)
1835 /* XXX cut 55 - 57 */
1836 #define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset)
1837 #define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset)
1838 #define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table)
1839 #define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table)
1840 #define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table)
1841 #define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table)
1842 #define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table)
1843 #define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table)
1844 #define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table)
1845 #define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table)
1846 #define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table)
1847 #define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table)
1848 #define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table)
1849 #define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table)
1850 #define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table)
1851 #define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table)
1852 #define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table)
1853 #define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table)
1854 #define DIOCOSFPFLUSH _IO('D', 78)
1855 #define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl)
1856 #define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl)
1857 #define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans)
1858 #define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans)
1859 #define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans)
1860 #define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes)
1861 #define DIOCCLRSRCNODES _IO('D', 85)
1862 #define DIOCSETHOSTID _IOWR('D', 86, u_int32_t)
1863 #define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface)
1864 #define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface)
1865 #define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface)
1866 #define DIOCKILLSRCNODES _IOWR('D', 91, struct pfioc_src_node_kill)
1867
1868 #ifdef KERNEL
1869 RB_HEAD(pf_src_tree, pf_src_node);
1870 RB_PROTOTYPE_SC(__private_extern__, pf_src_tree, pf_src_node, entry,
1871 pf_src_compare);
1872 __private_extern__ struct pf_src_tree tree_src_tracking;
1873
1874 RB_HEAD(pf_state_tree_id, pf_state);
1875 RB_PROTOTYPE_SC(__private_extern__, pf_state_tree_id, pf_state,
1876 entry_id, pf_state_compare_id);
1877 __private_extern__ struct pf_state_tree_id tree_id;
1878 __private_extern__ struct pf_state_queue state_list;
1879
1880 TAILQ_HEAD(pf_poolqueue, pf_pool);
1881 __private_extern__ struct pf_poolqueue pf_pools[2];
1882 __private_extern__ struct pf_palist pf_pabuf;
1883 __private_extern__ u_int32_t ticket_pabuf;
1884 #if ALTQ
1885 TAILQ_HEAD(pf_altqqueue, pf_altq);
1886 __private_extern__ struct pf_altqqueue pf_altqs[2];
1887 __private_extern__ u_int32_t ticket_altqs_active;
1888 __private_extern__ u_int32_t ticket_altqs_inactive;
1889 __private_extern__ int altqs_inactive_open;
1890 __private_extern__ struct pf_altqqueue *pf_altqs_active;
1891 __private_extern__ struct pf_altqqueue *pf_altqs_inactive;
1892 #endif /* ALTQ */
1893 __private_extern__ struct pf_poolqueue *pf_pools_active;
1894 __private_extern__ struct pf_poolqueue *pf_pools_inactive;
1895
1896 __private_extern__ int pf_tbladdr_setup(struct pf_ruleset *,
1897 struct pf_addr_wrap *);
1898 __private_extern__ void pf_tbladdr_remove(struct pf_addr_wrap *);
1899 __private_extern__ void pf_tbladdr_copyout(struct pf_addr_wrap *);
1900 __private_extern__ void pf_calc_skip_steps(struct pf_rulequeue *);
1901
1902 __private_extern__ struct pool pf_src_tree_pl, pf_rule_pl;
1903 __private_extern__ struct pool pf_state_pl, pf_state_key_pl, pf_pooladdr_pl;
1904 __private_extern__ struct pool pf_state_scrub_pl;
1905 #if ALTQ
1906 __private_extern__ struct pool pf_altq_pl;
1907 #endif /* ALTQ */
1908 #ifndef NO_APPLE_EXTENSIONS
1909 __private_extern__ struct pool pf_app_state_pl;
1910 #endif
1911
1912 __private_extern__ struct thread *pf_purge_thread;
1913
1914 __private_extern__ void pfinit(void);
1915 __private_extern__ void pf_purge_thread_fn(void *, wait_result_t);
1916 __private_extern__ void pf_purge_expired_src_nodes(void);
1917 __private_extern__ void pf_purge_expired_states(u_int32_t);
1918 __private_extern__ void pf_unlink_state(struct pf_state *);
1919 __private_extern__ void pf_free_state(struct pf_state *);
1920 __private_extern__ int pf_insert_state(struct pfi_kif *, struct pf_state *);
1921 __private_extern__ int pf_insert_src_node(struct pf_src_node **,
1922 struct pf_rule *, struct pf_addr *, sa_family_t);
1923 __private_extern__ void pf_src_tree_remove_state(struct pf_state *);
1924 __private_extern__ struct pf_state *pf_find_state_byid(struct pf_state_cmp *);
1925 __private_extern__ struct pf_state *pf_find_state_all(struct pf_state_key_cmp *,
1926 u_int, int *);
1927 __private_extern__ void pf_print_state(struct pf_state *);
1928 __private_extern__ void pf_print_flags(u_int8_t);
1929 __private_extern__ u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t,
1930 u_int8_t);
1931
1932 __private_extern__ struct ifnet *sync_ifp;
1933 __private_extern__ struct pf_rule pf_default_rule;
1934 __private_extern__ void pf_addrcpy(struct pf_addr *, struct pf_addr *,
1935 u_int8_t);
1936 __private_extern__ void pf_rm_rule(struct pf_rulequeue *, struct pf_rule *);
1937
1938 #if INET
1939 __private_extern__ int pf_test(int, struct ifnet *, struct mbuf **,
1940 struct ether_header *);
1941 #endif /* INET */
1942
1943 #if INET6
1944 __private_extern__ int pf_test6(int, struct ifnet *, struct mbuf **,
1945 struct ether_header *);
1946 __private_extern__ void pf_poolmask(struct pf_addr *, struct pf_addr *,
1947 struct pf_addr *, struct pf_addr *, u_int8_t);
1948 __private_extern__ void pf_addr_inc(struct pf_addr *, sa_family_t);
1949 #endif /* INET6 */
1950
1951 #ifndef NO_APPLE_EXTENSIONS
1952 __private_extern__ struct mbuf *pf_lazy_makewritable(struct pf_pdesc *,
1953 struct mbuf *, int);
1954 #endif
1955 __private_extern__ void *pf_pull_hdr(struct mbuf *, int, void *, int,
1956 u_short *, u_short *, sa_family_t);
1957 __private_extern__ void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t);
1958 __private_extern__ int pflog_packet(struct pfi_kif *, struct mbuf *,
1959 sa_family_t, u_int8_t, u_int8_t, struct pf_rule *, struct pf_rule *,
1960 struct pf_ruleset *, struct pf_pdesc *);
1961 __private_extern__ int pf_match_addr(u_int8_t, struct pf_addr *,
1962 struct pf_addr *, struct pf_addr *, sa_family_t);
1963 __private_extern__ int pf_match_addr_range(struct pf_addr *, struct pf_addr *,
1964 struct pf_addr *, sa_family_t);
1965 __private_extern__ int pf_match(u_int8_t, u_int32_t, u_int32_t, u_int32_t);
1966 __private_extern__ int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t);
1967 #ifndef NO_APPLE_EXTENSIONS
1968 __private_extern__ int pf_match_xport(u_int8_t, u_int8_t, union pf_rule_xport *,
1969 union pf_state_xport *);
1970 #endif
1971 __private_extern__ int pf_match_uid(u_int8_t, uid_t, uid_t, uid_t);
1972 __private_extern__ int pf_match_gid(u_int8_t, gid_t, gid_t, gid_t);
1973
1974 __private_extern__ void pf_normalize_init(void);
1975 __private_extern__ int pf_normalize_isempty(void);
1976 __private_extern__ int pf_normalize_ip(struct mbuf **, int, struct pfi_kif *,
1977 u_short *, struct pf_pdesc *);
1978 __private_extern__ int pf_normalize_ip6(struct mbuf **, int, struct pfi_kif *,
1979 u_short *, struct pf_pdesc *);
1980 __private_extern__ int pf_normalize_tcp(int, struct pfi_kif *, struct mbuf *,
1981 int, int, void *, struct pf_pdesc *);
1982 __private_extern__ void pf_normalize_tcp_cleanup(struct pf_state *);
1983 __private_extern__ int pf_normalize_tcp_init(struct mbuf *, int,
1984 struct pf_pdesc *, struct tcphdr *, struct pf_state_peer *,
1985 struct pf_state_peer *);
1986 __private_extern__ int pf_normalize_tcp_stateful(struct mbuf *, int,
1987 struct pf_pdesc *, u_short *, struct tcphdr *, struct pf_state *,
1988 struct pf_state_peer *, struct pf_state_peer *, int *);
1989 __private_extern__ u_int64_t pf_state_expires(const struct pf_state *);
1990 __private_extern__ void pf_purge_expired_fragments(void);
1991 __private_extern__ int pf_routable(struct pf_addr *addr, sa_family_t af,
1992 struct pfi_kif *);
1993 __private_extern__ int pf_rtlabel_match(struct pf_addr *, sa_family_t,
1994 struct pf_addr_wrap *);
1995 __private_extern__ int pf_socket_lookup(int, struct pf_pdesc *);
1996 __private_extern__ struct pf_state_key *pf_alloc_state_key(struct pf_state *);
1997 __private_extern__ void pfr_initialize(void);
1998 __private_extern__ int pfr_match_addr(struct pfr_ktable *, struct pf_addr *,
1999 sa_family_t);
2000 __private_extern__ void pfr_update_stats(struct pfr_ktable *, struct pf_addr *,
2001 sa_family_t, u_int64_t, int, int, int);
2002 __private_extern__ int pfr_pool_get(struct pfr_ktable *, int *,
2003 struct pf_addr *, struct pf_addr **, struct pf_addr **, sa_family_t);
2004 __private_extern__ void pfr_dynaddr_update(struct pfr_ktable *,
2005 struct pfi_dynaddr *);
2006 __private_extern__ struct pfr_ktable *pfr_attach_table(struct pf_ruleset *,
2007 char *);
2008 __private_extern__ void pfr_detach_table(struct pfr_ktable *);
2009 __private_extern__ int pfr_clr_tables(struct pfr_table *, int *, int);
2010 __private_extern__ int pfr_add_tables(struct pfr_table *, int, int *, int);
2011 __private_extern__ int pfr_del_tables(struct pfr_table *, int, int *, int);
2012 __private_extern__ int pfr_get_tables(struct pfr_table *, struct pfr_table *,
2013 int *, int);
2014 __private_extern__ int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *,
2015 int *, int);
2016 __private_extern__ int pfr_clr_tstats(struct pfr_table *, int, int *, int);
2017 __private_extern__ int pfr_set_tflags(struct pfr_table *, int, int, int, int *,
2018 int *, int);
2019 __private_extern__ int pfr_clr_addrs(struct pfr_table *, int *, int);
2020 __private_extern__ int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *,
2021 u_int64_t);
2022 __private_extern__ int pfr_add_addrs(struct pfr_table *, struct pfr_addr *,
2023 int, int *, int);
2024 __private_extern__ int pfr_del_addrs(struct pfr_table *, struct pfr_addr *,
2025 int, int *, int);
2026 __private_extern__ int pfr_set_addrs(struct pfr_table *, struct pfr_addr *,
2027 int, int *, int *, int *, int *, int, u_int32_t);
2028 __private_extern__ int pfr_get_addrs(struct pfr_table *, struct pfr_addr *,
2029 int *, int);
2030 __private_extern__ int pfr_get_astats(struct pfr_table *, struct pfr_astats *,
2031 int *, int);
2032 __private_extern__ int pfr_clr_astats(struct pfr_table *, struct pfr_addr *,
2033 int, int *, int);
2034 __private_extern__ int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *,
2035 int, int *, int);
2036 __private_extern__ int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *,
2037 int);
2038 __private_extern__ int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *,
2039 int);
2040 __private_extern__ int pfr_ina_commit(struct pfr_table *, u_int32_t, int *,
2041 int *, int);
2042 __private_extern__ int pfr_ina_define(struct pfr_table *, struct pfr_addr *,
2043 int, int *, int *, u_int32_t, int);
2044
2045 __private_extern__ struct pfi_kif *pfi_all;
2046
2047 __private_extern__ void pfi_initialize(void);
2048 __private_extern__ struct pfi_kif *pfi_kif_get(const char *);
2049 __private_extern__ void pfi_kif_ref(struct pfi_kif *, enum pfi_kif_refs);
2050 __private_extern__ void pfi_kif_unref(struct pfi_kif *, enum pfi_kif_refs);
2051 __private_extern__ int pfi_kif_match(struct pfi_kif *, struct pfi_kif *);
2052 __private_extern__ void pfi_attach_ifnet(struct ifnet *);
2053 __private_extern__ void pfi_detach_ifnet(struct ifnet *);
2054 __private_extern__ int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *,
2055 sa_family_t);
2056 __private_extern__ int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t);
2057 __private_extern__ void pfi_dynaddr_remove(struct pf_addr_wrap *);
2058 __private_extern__ void pfi_dynaddr_copyout(struct pf_addr_wrap *);
2059 __private_extern__ void pfi_update_status(const char *, struct pf_status *);
2060 __private_extern__ int pfi_get_ifaces(const char *, struct pfi_kif *, int *);
2061 __private_extern__ int pfi_set_flags(const char *, int);
2062 __private_extern__ int pfi_clear_flags(const char *, int);
2063
2064 __private_extern__ u_int16_t pf_tagname2tag(char *);
2065 __private_extern__ void pf_tag2tagname(u_int16_t, char *);
2066 __private_extern__ void pf_tag_ref(u_int16_t);
2067 __private_extern__ void pf_tag_unref(u_int16_t);
2068 __private_extern__ int pf_tag_packet(struct mbuf *, struct pf_mtag *,
2069 int, unsigned int);
2070 __private_extern__ u_int32_t pf_qname2qid(char *);
2071 __private_extern__ void pf_qid2qname(u_int32_t, char *);
2072 __private_extern__ void pf_qid_unref(u_int32_t);
2073
2074 __private_extern__ struct pf_status pf_status;
2075 __private_extern__ struct pool pf_frent_pl, pf_frag_pl;
2076
2077 struct pf_pool_limit {
2078 void *pp;
2079 unsigned limit;
2080 };
2081 __private_extern__ struct pf_pool_limit pf_pool_limits[PF_LIMIT_MAX];
2082
2083 __private_extern__ int pf_af_hook(struct ifnet *, struct mbuf **,
2084 struct mbuf **, unsigned int, int);
2085 __private_extern__ int pf_ifaddr_hook(struct ifnet *, unsigned long);
2086 __private_extern__ void pf_ifnet_hook(struct ifnet *, int);
2087
2088 /*
2089 * The following are defined with "private extern" storage class for
2090 * kernel, and "extern" for user-space.
2091 */
2092 __private_extern__ struct pf_anchor_global pf_anchors;
2093 __private_extern__ struct pf_anchor pf_main_anchor;
2094 #define pf_main_ruleset pf_main_anchor.ruleset
2095
2096 /* these ruleset functions can be linked into userland programs (pfctl) */
2097 __private_extern__ int pf_get_ruleset_number(u_int8_t);
2098 __private_extern__ void pf_init_ruleset(struct pf_ruleset *);
2099 __private_extern__ int pf_anchor_setup(struct pf_rule *,
2100 const struct pf_ruleset *, const char *);
2101 __private_extern__ int pf_anchor_copyout(const struct pf_ruleset *,
2102 const struct pf_rule *, struct pfioc_rule *);
2103 __private_extern__ void pf_anchor_remove(struct pf_rule *);
2104 __private_extern__ void pf_remove_if_empty_ruleset(struct pf_ruleset *);
2105 __private_extern__ struct pf_anchor *pf_find_anchor(const char *);
2106 __private_extern__ struct pf_ruleset *pf_find_ruleset(const char *);
2107 __private_extern__ struct pf_ruleset *pf_find_or_create_ruleset(const char *);
2108 __private_extern__ void pf_rs_initialize(void);
2109
2110 __private_extern__ int pf_osfp_add(struct pf_osfp_ioctl *);
2111 __private_extern__ struct pf_osfp_enlist *pf_osfp_fingerprint(struct pf_pdesc *,
2112 struct mbuf *, int, const struct tcphdr *);
2113 __private_extern__ struct pf_osfp_enlist *pf_osfp_fingerprint_hdr(
2114 const struct ip *, const struct ip6_hdr *, const struct tcphdr *);
2115 __private_extern__ void pf_osfp_flush(void);
2116 __private_extern__ int pf_osfp_get(struct pf_osfp_ioctl *);
2117 __private_extern__ void pf_osfp_initialize(void);
2118 __private_extern__ int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t);
2119 __private_extern__ struct pf_os_fingerprint *pf_osfp_validate(void);
2120 #else /* !KERNEL */
2121 extern struct pf_anchor_global pf_anchors;
2122 extern struct pf_anchor pf_main_anchor;
2123 #define pf_main_ruleset pf_main_anchor.ruleset
2124
2125 /* these ruleset functions can be linked into userland programs (pfctl) */
2126 extern int pf_get_ruleset_number(u_int8_t);
2127 extern void pf_init_ruleset(struct pf_ruleset *);
2128 extern int pf_anchor_setup(struct pf_rule *, const struct pf_ruleset *,
2129 const char *);
2130 extern int pf_anchor_copyout(const struct pf_ruleset *, const struct pf_rule *,
2131 struct pfioc_rule *);
2132 extern void pf_anchor_remove(struct pf_rule *);
2133 extern void pf_remove_if_empty_ruleset(struct pf_ruleset *);
2134 extern struct pf_anchor *pf_find_anchor(const char *);
2135 extern struct pf_ruleset *pf_find_ruleset(const char *);
2136 extern struct pf_ruleset *pf_find_or_create_ruleset(const char *);
2137 extern void pf_rs_initialize(void);
2138 #endif /* !KERNEL */
2139
2140 #ifdef __cplusplus
2141 }
2142 #endif
2143 #endif /* PF || !KERNEL */
2144 #endif /* PRIVATE */
2145 #endif /* _NET_PFVAR_H_ */
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