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1 /*
2 * Copyright (c) 2007-2010 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: git commit b6bf13f8321283cd7ee82b1795e86506084b1b95 $ */
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 /*
67 * XXX
68 * XXX Private interfaces. Do not include this file; use pfctl(8) instead.
69 * XXX
70 */
71 #if PF || !defined(KERNEL)
72
73 #ifdef __cplusplus
74 extern "C" {
75 #endif
76
77 #include <sys/param.h>
78 #include <sys/types.h>
79 #include <sys/queue.h>
80 #include <libkern/tree.h>
81
82 #include <net/radix.h>
83 #include <netinet/in.h>
84
85 #ifdef KERNEL
86 #include <kern/kern_types.h>
87 #include <kern/zalloc.h>
88 #include <kern/lock.h>
89
90 #include <machine/endian.h>
91 #include <sys/systm.h>
92 #include <net/pf_mtag.h>
93
94 #if BYTE_ORDER == BIG_ENDIAN
95 #define htobe64(x) (x)
96 #else /* LITTLE ENDIAN */
97 #define htobe64(x) __DARWIN_OSSwapInt64(x)
98 #endif /* LITTLE_ENDIAN */
99
100 #define be64toh(x) htobe64(x)
101
102 __private_extern__ lck_rw_t *pf_perim_lock;
103 __private_extern__ lck_mtx_t *pf_lock;
104
105 struct pool {
106 struct zone *pool_zone; /* pointer to backend zone */
107 const char *pool_name; /* name of pool */
108 unsigned int pool_count; /* # of outstanding elements */
109 unsigned int pool_hiwat; /* high watermark */
110 unsigned int pool_limit; /* hard limit */
111 unsigned int pool_fails; /* # of failed allocs due to limit */
112 };
113
114 #define PR_NOWAIT FALSE
115 #define PR_WAITOK TRUE
116
117 __private_extern__ void pool_init(struct pool *, size_t, unsigned int,
118 unsigned int, int, const char *, void *);
119 __private_extern__ void pool_destroy(struct pool *);
120 __private_extern__ void pool_sethiwat(struct pool *, int);
121 __private_extern__ void pool_sethardlimit(struct pool *, int,
122 const char *, int);
123 __private_extern__ void *pool_get(struct pool *, int);
124 __private_extern__ void pool_put(struct pool *, void *);
125 __private_extern__ u_int64_t pf_time_second(void);
126 __private_extern__ u_int64_t pf_calendar_time_second(void);
127 #endif /* KERNEL */
128
129 union sockaddr_union {
130 struct sockaddr sa;
131 struct sockaddr_in sin;
132 struct sockaddr_in6 sin6;
133 };
134
135 #define PF_TCPS_PROXY_SRC ((TCP_NSTATES)+0)
136 #define PF_TCPS_PROXY_DST ((TCP_NSTATES)+1)
137
138 #define PF_MD5_DIGEST_LENGTH 16
139 #ifdef MD5_DIGEST_LENGTH
140 #if PF_MD5_DIGEST_LENGTH != MD5_DIGEST_LENGTH
141 #error
142 #endif /* PF_MD5_DIGEST_LENGTH != MD5_DIGEST_LENGTH */
143 #endif /* MD5_DIGEST_LENGTH */
144
145 #ifdef KERNEL
146 struct ip;
147 struct ip6_hdr;
148 struct tcphdr;
149 #ifndef NO_APPLE_EXTENSIONS
150 struct pf_grev1_hdr;
151 struct pf_esp_hdr;
152 #endif /* !NO_APPLE_EXTENSIONS */
153 #endif /* KERNEL */
154
155 enum { PF_INOUT, PF_IN, PF_OUT };
156 enum { PF_PASS, PF_DROP, PF_SCRUB, PF_NOSCRUB, PF_NAT, PF_NONAT,
157 PF_BINAT, PF_NOBINAT, PF_RDR, PF_NORDR, PF_SYNPROXY_DROP };
158 enum { PF_RULESET_SCRUB, PF_RULESET_FILTER, PF_RULESET_NAT,
159 PF_RULESET_BINAT, PF_RULESET_RDR, PF_RULESET_MAX };
160 enum { PF_OP_NONE, PF_OP_IRG, PF_OP_EQ, PF_OP_NE, PF_OP_LT,
161 PF_OP_LE, PF_OP_GT, PF_OP_GE, PF_OP_XRG, PF_OP_RRG };
162 enum { PF_DEBUG_NONE, PF_DEBUG_URGENT, PF_DEBUG_MISC, PF_DEBUG_NOISY };
163 enum { PF_CHANGE_NONE, PF_CHANGE_ADD_HEAD, PF_CHANGE_ADD_TAIL,
164 PF_CHANGE_ADD_BEFORE, PF_CHANGE_ADD_AFTER,
165 PF_CHANGE_REMOVE, PF_CHANGE_GET_TICKET };
166 enum { PF_GET_NONE, PF_GET_CLR_CNTR };
167
168 /*
169 * Note about PFTM_*: real indices into pf_rule.timeout[] come before
170 * PFTM_MAX, special cases afterwards. See pf_state_expires().
171 */
172 enum { PFTM_TCP_FIRST_PACKET, PFTM_TCP_OPENING, PFTM_TCP_ESTABLISHED,
173 PFTM_TCP_CLOSING, PFTM_TCP_FIN_WAIT, PFTM_TCP_CLOSED,
174 PFTM_UDP_FIRST_PACKET, PFTM_UDP_SINGLE, PFTM_UDP_MULTIPLE,
175 PFTM_ICMP_FIRST_PACKET, PFTM_ICMP_ERROR_REPLY,
176 #ifndef NO_APPLE_EXTENSIONS
177 PFTM_GREv1_FIRST_PACKET, PFTM_GREv1_INITIATING, PFTM_GREv1_ESTABLISHED,
178 PFTM_ESP_FIRST_PACKET, PFTM_ESP_INITIATING, PFTM_ESP_ESTABLISHED,
179 #endif /* !NO_APPLE_EXTENSIONS */
180 PFTM_OTHER_FIRST_PACKET, PFTM_OTHER_SINGLE,
181 PFTM_OTHER_MULTIPLE, PFTM_FRAG, PFTM_INTERVAL,
182 PFTM_ADAPTIVE_START, PFTM_ADAPTIVE_END, PFTM_SRC_NODE,
183 PFTM_TS_DIFF, PFTM_MAX, PFTM_PURGE, PFTM_UNLINKED,
184 PFTM_UNTIL_PACKET };
185
186 /* PFTM default values */
187 #define PFTM_TCP_FIRST_PACKET_VAL 120 /* First TCP packet */
188 #define PFTM_TCP_OPENING_VAL 30 /* No response yet */
189 #define PFTM_TCP_ESTABLISHED_VAL (24 * 60 * 60) /* Established */
190 #define PFTM_TCP_CLOSING_VAL (15 * 60) /* Half closed */
191 #define PFTM_TCP_FIN_WAIT_VAL 45 /* Got both FINs */
192 #define PFTM_TCP_CLOSED_VAL 90 /* Got a RST */
193 #define PFTM_UDP_FIRST_PACKET_VAL 60 /* First UDP packet */
194 #define PFTM_UDP_SINGLE_VAL 30 /* Unidirectional */
195 #define PFTM_UDP_MULTIPLE_VAL 60 /* Bidirectional */
196 #define PFTM_ICMP_FIRST_PACKET_VAL 20 /* First ICMP packet */
197 #define PFTM_ICMP_ERROR_REPLY_VAL 10 /* Got error response */
198 #ifndef NO_APPLE_EXTENSIONS
199 #define PFTM_GREv1_FIRST_PACKET_VAL 120
200 #define PFTM_GREv1_INITIATING_VAL 30
201 #define PFTM_GREv1_ESTABLISHED_VAL 1800
202 #define PFTM_ESP_FIRST_PACKET_VAL 120
203 #define PFTM_ESP_INITIATING_VAL 30
204 #define PFTM_ESP_ESTABLISHED_VAL 900
205 #endif /* !NO_APPLE_EXTENSIONS */
206 #define PFTM_OTHER_FIRST_PACKET_VAL 60 /* First packet */
207 #define PFTM_OTHER_SINGLE_VAL 30 /* Unidirectional */
208 #define PFTM_OTHER_MULTIPLE_VAL 60 /* Bidirectional */
209 #define PFTM_FRAG_VAL 30 /* Fragment expire */
210 #define PFTM_INTERVAL_VAL 10 /* Expire interval */
211 #define PFTM_SRC_NODE_VAL 0 /* Source tracking */
212 #define PFTM_TS_DIFF_VAL 30 /* Allowed TS diff */
213
214 enum { PF_NOPFROUTE, PF_FASTROUTE, PF_ROUTETO, PF_DUPTO, PF_REPLYTO };
215 enum { PF_LIMIT_STATES,
216 #ifndef NO_APPLE_EXTENSIONS
217 PF_LIMIT_APP_STATES,
218 #endif /* !NO_APPLE_EXTENSIONS */
219 PF_LIMIT_SRC_NODES, PF_LIMIT_FRAGS,
220 PF_LIMIT_TABLES, PF_LIMIT_TABLE_ENTRIES, PF_LIMIT_MAX };
221 #define PF_POOL_IDMASK 0x0f
222 enum { PF_POOL_NONE, PF_POOL_BITMASK, PF_POOL_RANDOM,
223 PF_POOL_SRCHASH, PF_POOL_ROUNDROBIN };
224 enum { PF_ADDR_ADDRMASK, PF_ADDR_NOROUTE, PF_ADDR_DYNIFTL,
225 PF_ADDR_TABLE, PF_ADDR_RTLABEL, PF_ADDR_URPFFAILED,
226 PF_ADDR_RANGE };
227 #define PF_POOL_TYPEMASK 0x0f
228 #define PF_POOL_STICKYADDR 0x20
229 #define PF_WSCALE_FLAG 0x80
230 #define PF_WSCALE_MASK 0x0f
231
232 #define PF_LOG 0x01
233 #define PF_LOG_ALL 0x02
234 #define PF_LOG_SOCKET_LOOKUP 0x04
235
236 struct pf_addr {
237 union {
238 struct in_addr v4;
239 struct in6_addr v6;
240 u_int8_t addr8[16];
241 u_int16_t addr16[8];
242 u_int32_t addr32[4];
243 } pfa; /* 128-bit address */
244 #define v4 pfa.v4
245 #define v6 pfa.v6
246 #define addr8 pfa.addr8
247 #define addr16 pfa.addr16
248 #define addr32 pfa.addr32
249 };
250
251 #define PF_TABLE_NAME_SIZE 32
252
253 #define PFI_AFLAG_NETWORK 0x01
254 #define PFI_AFLAG_BROADCAST 0x02
255 #define PFI_AFLAG_PEER 0x04
256 #define PFI_AFLAG_MODEMASK 0x07
257 #define PFI_AFLAG_NOALIAS 0x08
258
259 #ifndef RTLABEL_LEN
260 #define RTLABEL_LEN 32
261 #endif
262
263 struct pf_addr_wrap {
264 union {
265 struct {
266 struct pf_addr addr;
267 struct pf_addr mask;
268 } a;
269 char ifname[IFNAMSIZ];
270 char tblname[PF_TABLE_NAME_SIZE];
271 char rtlabelname[RTLABEL_LEN];
272 u_int32_t rtlabel;
273 } v;
274 union {
275 #ifdef KERNEL
276 struct pfi_dynaddr *dyn __attribute__((aligned(8)));
277 struct pfr_ktable *tbl __attribute__((aligned(8)));
278 #else /* !KERNEL */
279 void *dyn __attribute__((aligned(8)));
280 void *tbl __attribute__((aligned(8)));
281 #endif /* !KERNEL */
282 int dyncnt __attribute__((aligned(8)));
283 int tblcnt __attribute__((aligned(8)));
284 } p __attribute__((aligned(8)));
285 u_int8_t type; /* PF_ADDR_* */
286 u_int8_t iflags; /* PFI_AFLAG_* */
287 };
288
289 #ifndef NO_APPLE_EXTENSIONS
290 struct pf_port_range {
291 u_int16_t port[2];
292 u_int8_t op;
293 };
294
295 union pf_rule_xport {
296 struct pf_port_range range;
297 u_int16_t call_id;
298 u_int32_t spi;
299 };
300 #endif /* !NO_APPLE_EXTENSIONS */
301
302 #ifdef KERNEL
303 struct pfi_dynaddr {
304 TAILQ_ENTRY(pfi_dynaddr) entry;
305 struct pf_addr pfid_addr4;
306 struct pf_addr pfid_mask4;
307 struct pf_addr pfid_addr6;
308 struct pf_addr pfid_mask6;
309 struct pfr_ktable *pfid_kt;
310 struct pfi_kif *pfid_kif;
311 void *pfid_hook_cookie;
312 int pfid_net; /* mask or 128 */
313 int pfid_acnt4; /* address count IPv4 */
314 int pfid_acnt6; /* address count IPv6 */
315 sa_family_t pfid_af; /* rule af */
316 u_int8_t pfid_iflags; /* PFI_AFLAG_* */
317 };
318
319 /*
320 * Address manipulation macros
321 */
322
323 #if INET
324 #if !INET6
325 #define PF_INET_ONLY
326 #endif /* ! INET6 */
327 #endif /* INET */
328
329 #if INET6
330 #if !INET
331 #define PF_INET6_ONLY
332 #endif /* ! INET */
333 #endif /* INET6 */
334
335 #if INET
336 #if INET6
337 #define PF_INET_INET6
338 #endif /* INET6 */
339 #endif /* INET */
340
341 #else /* !KERNEL */
342
343 #define PF_INET_INET6
344
345 #endif /* !KERNEL */
346
347 /* Both IPv4 and IPv6 */
348 #ifdef PF_INET_INET6
349
350 #define PF_AEQ(a, b, c) \
351 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \
352 ((a)->addr32[3] == (b)->addr32[3] && \
353 (a)->addr32[2] == (b)->addr32[2] && \
354 (a)->addr32[1] == (b)->addr32[1] && \
355 (a)->addr32[0] == (b)->addr32[0])) \
356
357 #define PF_ANEQ(a, b, c) \
358 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \
359 ((a)->addr32[3] != (b)->addr32[3] || \
360 (a)->addr32[2] != (b)->addr32[2] || \
361 (a)->addr32[1] != (b)->addr32[1] || \
362 (a)->addr32[0] != (b)->addr32[0])) \
363
364 #define PF_AZERO(a, c) \
365 ((c == AF_INET && !(a)->addr32[0]) || \
366 (!(a)->addr32[0] && !(a)->addr32[1] && \
367 !(a)->addr32[2] && !(a)->addr32[3])) \
368
369 #define PF_MATCHA(n, a, m, b, f) \
370 pf_match_addr(n, a, m, b, f)
371
372 #define PF_ACPY(a, b, f) \
373 pf_addrcpy(a, b, f)
374
375 #define PF_AINC(a, f) \
376 pf_addr_inc(a, f)
377
378 #define PF_POOLMASK(a, b, c, d, f) \
379 pf_poolmask(a, b, c, d, f)
380
381 #else
382
383 /* Just IPv6 */
384
385 #ifdef PF_INET6_ONLY
386
387 #define PF_AEQ(a, b, c) \
388 ((a)->addr32[3] == (b)->addr32[3] && \
389 (a)->addr32[2] == (b)->addr32[2] && \
390 (a)->addr32[1] == (b)->addr32[1] && \
391 (a)->addr32[0] == (b)->addr32[0]) \
392
393 #define PF_ANEQ(a, b, c) \
394 ((a)->addr32[3] != (b)->addr32[3] || \
395 (a)->addr32[2] != (b)->addr32[2] || \
396 (a)->addr32[1] != (b)->addr32[1] || \
397 (a)->addr32[0] != (b)->addr32[0]) \
398
399 #define PF_AZERO(a, c) \
400 (!(a)->addr32[0] && \
401 !(a)->addr32[1] && \
402 !(a)->addr32[2] && \
403 !(a)->addr32[3]) \
404
405 #define PF_MATCHA(n, a, m, b, f) \
406 pf_match_addr(n, a, m, b, f)
407
408 #define PF_ACPY(a, b, f) \
409 pf_addrcpy(a, b, f)
410
411 #define PF_AINC(a, f) \
412 pf_addr_inc(a, f)
413
414 #define PF_POOLMASK(a, b, c, d, f) \
415 pf_poolmask(a, b, c, d, f)
416
417 #else
418
419 /* Just IPv4 */
420 #ifdef PF_INET_ONLY
421
422 #define PF_AEQ(a, b, c) \
423 ((a)->addr32[0] == (b)->addr32[0])
424
425 #define PF_ANEQ(a, b, c) \
426 ((a)->addr32[0] != (b)->addr32[0])
427
428 #define PF_AZERO(a, c) \
429 (!(a)->addr32[0])
430
431 #define PF_MATCHA(n, a, m, b, f) \
432 pf_match_addr(n, a, m, b, f)
433
434 #define PF_ACPY(a, b, f) \
435 (a)->v4.s_addr = (b)->v4.s_addr
436
437 #define PF_AINC(a, f) \
438 do { \
439 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \
440 } while (0)
441
442 #define PF_POOLMASK(a, b, c, d, f) \
443 do { \
444 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \
445 (((c)->addr32[0] ^ 0xffffffff) & (d)->addr32[0]); \
446 } while (0)
447
448 #endif /* PF_INET_ONLY */
449 #endif /* PF_INET6_ONLY */
450 #endif /* PF_INET_INET6 */
451
452 #ifdef KERNEL
453 #define PF_MISMATCHAW(aw, x, af, neg, ifp) \
454 ( \
455 (((aw)->type == PF_ADDR_NOROUTE && \
456 pf_routable((x), (af), NULL)) || \
457 (((aw)->type == PF_ADDR_URPFFAILED && (ifp) != NULL && \
458 pf_routable((x), (af), (ifp))) || \
459 ((aw)->type == PF_ADDR_RTLABEL && \
460 !pf_rtlabel_match((x), (af), (aw))) || \
461 ((aw)->type == PF_ADDR_TABLE && \
462 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \
463 ((aw)->type == PF_ADDR_DYNIFTL && \
464 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \
465 ((aw)->type == PF_ADDR_RANGE && \
466 !pf_match_addr_range(&(aw)->v.a.addr, \
467 &(aw)->v.a.mask, (x), (af))) || \
468 ((aw)->type == PF_ADDR_ADDRMASK && \
469 !PF_AZERO(&(aw)->v.a.mask, (af)) && \
470 !PF_MATCHA(0, &(aw)->v.a.addr, \
471 &(aw)->v.a.mask, (x), (af))))) != \
472 (neg) \
473 )
474 #endif /* KERNEL */
475
476 struct pf_rule_uid {
477 uid_t uid[2];
478 u_int8_t op;
479 u_int8_t _pad[3];
480 };
481
482 struct pf_rule_gid {
483 uid_t gid[2];
484 u_int8_t op;
485 u_int8_t _pad[3];
486 };
487
488 struct pf_rule_addr {
489 struct pf_addr_wrap addr;
490 #ifndef NO_APPLE_EXTENSIONS
491 union pf_rule_xport xport;
492 u_int8_t neg;
493 #else /* NO_APPLE_EXTENSIONS */
494 u_int16_t port[2];
495 u_int8_t neg;
496 u_int8_t port_op;
497 #endif /* NO_APPLE_EXTENSIONS */
498 };
499
500 struct pf_pooladdr {
501 struct pf_addr_wrap addr;
502 TAILQ_ENTRY(pf_pooladdr) entries;
503 #if !defined(__LP64__)
504 u_int32_t _pad[2];
505 #endif /* !__LP64__ */
506 char ifname[IFNAMSIZ];
507 #ifdef KERNEL
508 struct pfi_kif *kif __attribute__((aligned(8)));
509 #else /* !KERNEL */
510 void *kif __attribute__((aligned(8)));
511 #endif /* !KERNEL */
512 };
513
514 TAILQ_HEAD(pf_palist, pf_pooladdr);
515
516 struct pf_poolhashkey {
517 union {
518 u_int8_t key8[16];
519 u_int16_t key16[8];
520 u_int32_t key32[4];
521 } pfk; /* 128-bit hash key */
522 #define key8 pfk.key8
523 #define key16 pfk.key16
524 #define key32 pfk.key32
525 };
526
527 struct pf_pool {
528 struct pf_palist list;
529 #if !defined(__LP64__)
530 u_int32_t _pad[2];
531 #endif /* !__LP64__ */
532 #ifdef KERNEL
533 struct pf_pooladdr *cur __attribute__((aligned(8)));
534 #else /* !KERNEL */
535 void *cur __attribute__((aligned(8)));
536 #endif /* !KERNEL */
537 struct pf_poolhashkey key __attribute__((aligned(8)));
538 struct pf_addr counter;
539 int tblidx;
540 u_int16_t proxy_port[2];
541 u_int8_t port_op;
542 u_int8_t opts;
543 };
544
545
546 /* A packed Operating System description for fingerprinting */
547 typedef u_int32_t pf_osfp_t;
548 #define PF_OSFP_ANY ((pf_osfp_t)0)
549 #define PF_OSFP_UNKNOWN ((pf_osfp_t)-1)
550 #define PF_OSFP_NOMATCH ((pf_osfp_t)-2)
551
552 struct pf_osfp_entry {
553 SLIST_ENTRY(pf_osfp_entry) fp_entry;
554 #if !defined(__LP64__)
555 u_int32_t _pad;
556 #endif /* !__LP64__ */
557 pf_osfp_t fp_os;
558 int fp_enflags;
559 #define PF_OSFP_EXPANDED 0x001 /* expanded entry */
560 #define PF_OSFP_GENERIC 0x002 /* generic signature */
561 #define PF_OSFP_NODETAIL 0x004 /* no p0f details */
562 #define PF_OSFP_LEN 32
563 char fp_class_nm[PF_OSFP_LEN];
564 char fp_version_nm[PF_OSFP_LEN];
565 char fp_subtype_nm[PF_OSFP_LEN];
566 };
567 #define PF_OSFP_ENTRY_EQ(a, b) \
568 ((a)->fp_os == (b)->fp_os && \
569 memcmp((a)->fp_class_nm, (b)->fp_class_nm, PF_OSFP_LEN) == 0 && \
570 memcmp((a)->fp_version_nm, (b)->fp_version_nm, PF_OSFP_LEN) == 0 && \
571 memcmp((a)->fp_subtype_nm, (b)->fp_subtype_nm, PF_OSFP_LEN) == 0)
572
573 /* handle pf_osfp_t packing */
574 #define _FP_RESERVED_BIT 1 /* For the special negative #defines */
575 #define _FP_UNUSED_BITS 1
576 #define _FP_CLASS_BITS 10 /* OS Class (Windows, Linux) */
577 #define _FP_VERSION_BITS 10 /* OS version (95, 98, NT, 2.4.54, 3.2) */
578 #define _FP_SUBTYPE_BITS 10 /* patch level (NT SP4, SP3, ECN patch) */
579 #define PF_OSFP_UNPACK(osfp, class, version, subtype) do { \
580 (class) = ((osfp) >> (_FP_VERSION_BITS+_FP_SUBTYPE_BITS)) & \
581 ((1 << _FP_CLASS_BITS) - 1); \
582 (version) = ((osfp) >> _FP_SUBTYPE_BITS) & \
583 ((1 << _FP_VERSION_BITS) - 1);\
584 (subtype) = (osfp) & ((1 << _FP_SUBTYPE_BITS) - 1); \
585 } while (0)
586 #define PF_OSFP_PACK(osfp, class, version, subtype) do { \
587 (osfp) = ((class) & ((1 << _FP_CLASS_BITS) - 1)) << (_FP_VERSION_BITS \
588 + _FP_SUBTYPE_BITS); \
589 (osfp) |= ((version) & ((1 << _FP_VERSION_BITS) - 1)) << \
590 _FP_SUBTYPE_BITS; \
591 (osfp) |= (subtype) & ((1 << _FP_SUBTYPE_BITS) - 1); \
592 } while (0)
593
594 /* the fingerprint of an OSes TCP SYN packet */
595 typedef u_int64_t pf_tcpopts_t;
596 struct pf_os_fingerprint {
597 SLIST_HEAD(pf_osfp_enlist, pf_osfp_entry) fp_oses; /* list of matches */
598 pf_tcpopts_t fp_tcpopts; /* packed TCP options */
599 u_int16_t fp_wsize; /* TCP window size */
600 u_int16_t fp_psize; /* ip->ip_len */
601 u_int16_t fp_mss; /* TCP MSS */
602 u_int16_t fp_flags;
603 #define PF_OSFP_WSIZE_MOD 0x0001 /* Window modulus */
604 #define PF_OSFP_WSIZE_DC 0x0002 /* Window don't care */
605 #define PF_OSFP_WSIZE_MSS 0x0004 /* Window multiple of MSS */
606 #define PF_OSFP_WSIZE_MTU 0x0008 /* Window multiple of MTU */
607 #define PF_OSFP_PSIZE_MOD 0x0010 /* packet size modulus */
608 #define PF_OSFP_PSIZE_DC 0x0020 /* packet size don't care */
609 #define PF_OSFP_WSCALE 0x0040 /* TCP window scaling */
610 #define PF_OSFP_WSCALE_MOD 0x0080 /* TCP window scale modulus */
611 #define PF_OSFP_WSCALE_DC 0x0100 /* TCP window scale dont-care */
612 #define PF_OSFP_MSS 0x0200 /* TCP MSS */
613 #define PF_OSFP_MSS_MOD 0x0400 /* TCP MSS modulus */
614 #define PF_OSFP_MSS_DC 0x0800 /* TCP MSS dont-care */
615 #define PF_OSFP_DF 0x1000 /* IPv4 don't fragment bit */
616 #define PF_OSFP_TS0 0x2000 /* Zero timestamp */
617 #define PF_OSFP_INET6 0x4000 /* IPv6 */
618 u_int8_t fp_optcnt; /* TCP option count */
619 u_int8_t fp_wscale; /* TCP window scaling */
620 u_int8_t fp_ttl; /* IPv4 TTL */
621 #define PF_OSFP_MAXTTL_OFFSET 40
622 /* TCP options packing */
623 #define PF_OSFP_TCPOPT_NOP 0x0 /* TCP NOP option */
624 #define PF_OSFP_TCPOPT_WSCALE 0x1 /* TCP window scaling option */
625 #define PF_OSFP_TCPOPT_MSS 0x2 /* TCP max segment size opt */
626 #define PF_OSFP_TCPOPT_SACK 0x3 /* TCP SACK OK option */
627 #define PF_OSFP_TCPOPT_TS 0x4 /* TCP timestamp option */
628 #define PF_OSFP_TCPOPT_BITS 3 /* bits used by each option */
629 #define PF_OSFP_MAX_OPTS \
630 (sizeof(((struct pf_os_fingerprint *)0)->fp_tcpopts) * 8) \
631 / PF_OSFP_TCPOPT_BITS
632
633 SLIST_ENTRY(pf_os_fingerprint) fp_next;
634 };
635
636 struct pf_osfp_ioctl {
637 struct pf_osfp_entry fp_os;
638 pf_tcpopts_t fp_tcpopts; /* packed TCP options */
639 u_int16_t fp_wsize; /* TCP window size */
640 u_int16_t fp_psize; /* ip->ip_len */
641 u_int16_t fp_mss; /* TCP MSS */
642 u_int16_t fp_flags;
643 u_int8_t fp_optcnt; /* TCP option count */
644 u_int8_t fp_wscale; /* TCP window scaling */
645 u_int8_t fp_ttl; /* IPv4 TTL */
646
647 int fp_getnum; /* DIOCOSFPGET number */
648 };
649
650
651 union pf_rule_ptr {
652 struct pf_rule *ptr __attribute__((aligned(8)));
653 u_int32_t nr __attribute__((aligned(8)));
654 } __attribute__((aligned(8)));
655
656 #define PF_ANCHOR_NAME_SIZE 64
657
658 struct pf_rule {
659 struct pf_rule_addr src;
660 struct pf_rule_addr dst;
661 #define PF_SKIP_IFP 0
662 #define PF_SKIP_DIR 1
663 #define PF_SKIP_AF 2
664 #define PF_SKIP_PROTO 3
665 #define PF_SKIP_SRC_ADDR 4
666 #define PF_SKIP_SRC_PORT 5
667 #define PF_SKIP_DST_ADDR 6
668 #define PF_SKIP_DST_PORT 7
669 #define PF_SKIP_COUNT 8
670 union pf_rule_ptr skip[PF_SKIP_COUNT];
671 #define PF_RULE_LABEL_SIZE 64
672 char label[PF_RULE_LABEL_SIZE];
673 #define PF_QNAME_SIZE 64
674 char ifname[IFNAMSIZ];
675 char qname[PF_QNAME_SIZE];
676 char pqname[PF_QNAME_SIZE];
677 #define PF_TAG_NAME_SIZE 64
678 char tagname[PF_TAG_NAME_SIZE];
679 char match_tagname[PF_TAG_NAME_SIZE];
680
681 char overload_tblname[PF_TABLE_NAME_SIZE];
682
683 TAILQ_ENTRY(pf_rule) entries;
684 #if !defined(__LP64__)
685 u_int32_t _pad[2];
686 #endif /* !__LP64__ */
687 struct pf_pool rpool;
688
689 u_int64_t evaluations;
690 u_int64_t packets[2];
691 u_int64_t bytes[2];
692
693 #ifdef KERNEL
694 struct pfi_kif *kif __attribute__((aligned(8)));
695 #else /* !KERNEL */
696 void *kif __attribute__((aligned(8)));
697 #endif /* !KERNEL */
698 struct pf_anchor *anchor __attribute__((aligned(8)));
699 #ifdef KERNEL
700 struct pfr_ktable *overload_tbl __attribute__((aligned(8)));
701 #else /* !KERNEL */
702 void *overload_tbl __attribute__((aligned(8)));
703 #endif /* !KERNEL */
704
705 pf_osfp_t os_fingerprint __attribute__((aligned(8)));
706
707 unsigned int rtableid;
708 u_int32_t timeout[PFTM_MAX];
709 u_int32_t states;
710 u_int32_t max_states;
711 u_int32_t src_nodes;
712 u_int32_t max_src_nodes;
713 u_int32_t max_src_states;
714 u_int32_t max_src_conn;
715 struct {
716 u_int32_t limit;
717 u_int32_t seconds;
718 } max_src_conn_rate;
719 u_int32_t qid;
720 u_int32_t pqid;
721 u_int32_t rt_listid;
722 u_int32_t nr;
723 u_int32_t prob;
724 uid_t cuid;
725 pid_t cpid;
726
727 u_int16_t return_icmp;
728 u_int16_t return_icmp6;
729 u_int16_t max_mss;
730 u_int16_t tag;
731 u_int16_t match_tag;
732
733 struct pf_rule_uid uid;
734 struct pf_rule_gid gid;
735
736 u_int32_t rule_flag;
737 u_int8_t action;
738 u_int8_t direction;
739 u_int8_t log;
740 u_int8_t logif;
741 u_int8_t quick;
742 u_int8_t ifnot;
743 u_int8_t match_tag_not;
744 u_int8_t natpass;
745
746 #define PF_STATE_NORMAL 0x1
747 #define PF_STATE_MODULATE 0x2
748 #define PF_STATE_SYNPROXY 0x3
749 u_int8_t keep_state;
750 sa_family_t af;
751 u_int8_t proto;
752 u_int8_t type;
753 u_int8_t code;
754 u_int8_t flags;
755 u_int8_t flagset;
756 u_int8_t min_ttl;
757 u_int8_t allow_opts;
758 u_int8_t rt;
759 u_int8_t return_ttl;
760 u_int8_t tos;
761 u_int8_t anchor_relative;
762 u_int8_t anchor_wildcard;
763
764 #define PF_FLUSH 0x01
765 #define PF_FLUSH_GLOBAL 0x02
766 u_int8_t flush;
767
768 #ifndef NO_APPLE_EXTENSIONS
769 u_int8_t proto_variant;
770 u_int8_t extfilter; /* Filter mode [PF_EXTFILTER_xxx] */
771 u_int8_t extmap; /* Mapping mode [PF_EXTMAP_xxx] */
772 #endif /* !NO_APPLE_EXTENSIONS */
773 };
774
775 /* rule flags */
776 #define PFRULE_DROP 0x0000
777 #define PFRULE_RETURNRST 0x0001
778 #define PFRULE_FRAGMENT 0x0002
779 #define PFRULE_RETURNICMP 0x0004
780 #define PFRULE_RETURN 0x0008
781 #define PFRULE_NOSYNC 0x0010
782 #define PFRULE_SRCTRACK 0x0020 /* track source states */
783 #define PFRULE_RULESRCTRACK 0x0040 /* per rule */
784
785 /* scrub flags */
786 #define PFRULE_NODF 0x0100
787 #define PFRULE_FRAGCROP 0x0200 /* non-buffering frag cache */
788 #define PFRULE_FRAGDROP 0x0400 /* drop funny fragments */
789 #define PFRULE_RANDOMID 0x0800
790 #define PFRULE_REASSEMBLE_TCP 0x1000
791
792 /* rule flags again */
793 #define PFRULE_IFBOUND 0x00010000 /* if-bound */
794
795 #define PFSTATE_HIWAT 10000 /* default state table size */
796 #define PFSTATE_ADAPT_START 6000 /* default adaptive timeout start */
797 #define PFSTATE_ADAPT_END 12000 /* default adaptive timeout end */
798
799 #ifndef NO_APPLE_EXTENSIONS
800 #define PFAPPSTATE_HIWAT 10000 /* default same as state table */
801
802 enum pf_extmap {
803 PF_EXTMAP_APD = 1, /* Address-port-dependent mapping */
804 PF_EXTMAP_AD, /* Address-dependent mapping */
805 PF_EXTMAP_EI /* Endpoint-independent mapping */
806 };
807
808 enum pf_extfilter {
809 PF_EXTFILTER_APD = 1, /* Address-port-dependent filtering */
810 PF_EXTFILTER_AD, /* Address-dependent filtering */
811 PF_EXTFILTER_EI /* Endpoint-independent filtering */
812 };
813 #endif /* !NO_APPLE_EXTENSIONS */
814
815 struct pf_threshold {
816 u_int32_t limit;
817 #define PF_THRESHOLD_MULT 1000
818 #define PF_THRESHOLD_MAX 0xffffffff / PF_THRESHOLD_MULT
819 u_int32_t seconds;
820 u_int32_t count;
821 u_int32_t last;
822 };
823
824 struct pf_src_node {
825 RB_ENTRY(pf_src_node) entry;
826 struct pf_addr addr;
827 struct pf_addr raddr;
828 union pf_rule_ptr rule;
829 #ifdef KERNEL
830 struct pfi_kif *kif;
831 #else /* !KERNEL */
832 void *kif;
833 #endif /* !KERNEL */
834 u_int64_t bytes[2];
835 u_int64_t packets[2];
836 u_int32_t states;
837 u_int32_t conn;
838 struct pf_threshold conn_rate;
839 u_int64_t creation;
840 u_int64_t expire;
841 sa_family_t af;
842 u_int8_t ruletype;
843 };
844
845 #define PFSNODE_HIWAT 10000 /* default source node table size */
846
847 #ifdef KERNEL
848 struct pf_state_scrub {
849 struct timeval pfss_last; /* time received last packet */
850 u_int32_t pfss_tsecr; /* last echoed timestamp */
851 u_int32_t pfss_tsval; /* largest timestamp */
852 u_int32_t pfss_tsval0; /* original timestamp */
853 u_int16_t pfss_flags;
854 #define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */
855 #define PFSS_PAWS 0x0010 /* stricter PAWS checks */
856 #define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */
857 #define PFSS_DATA_TS 0x0040 /* timestamp on data packets */
858 #define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */
859 u_int8_t pfss_ttl; /* stashed TTL */
860 u_int8_t pad;
861 u_int32_t pfss_ts_mod; /* timestamp modulation */
862 };
863 #endif /* KERNEL */
864
865 #ifndef NO_APPLE_EXTENSIONS
866 union pf_state_xport {
867 u_int16_t port;
868 u_int16_t call_id;
869 u_int32_t spi;
870 };
871
872 struct pf_state_host {
873 struct pf_addr addr;
874 union pf_state_xport xport;
875 };
876 #else /* NO_APPLE_EXTENSIONS */
877 struct pf_state_host {
878 struct pf_addr addr;
879 u_int16_t port;
880 u_int16_t pad;
881 };
882 #endif /* NO_APPLE_EXTENSIONS */
883
884 #ifdef KERNEL
885 struct pf_state_peer {
886 u_int32_t seqlo; /* Max sequence number sent */
887 u_int32_t seqhi; /* Max the other end ACKd + win */
888 u_int32_t seqdiff; /* Sequence number modulator */
889 u_int16_t max_win; /* largest window (pre scaling) */
890 u_int8_t state; /* active state level */
891 u_int8_t wscale; /* window scaling factor */
892 u_int16_t mss; /* Maximum segment size option */
893 u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */
894 struct pf_state_scrub *scrub; /* state is scrubbed */
895 u_int8_t pad[3];
896 };
897
898 TAILQ_HEAD(pf_state_queue, pf_state);
899 #endif /* KERNEL */
900
901 #ifndef NO_APPLE_EXTENSIONS
902 #ifdef KERNEL
903 struct pf_state;
904 struct pf_pdesc;
905 struct pf_app_state;
906
907 typedef void (*pf_app_handler)(struct pf_state *, int, int, struct pf_pdesc *,
908 struct pfi_kif *);
909
910 typedef int (*pf_app_compare)(struct pf_app_state *, struct pf_app_state *);
911
912 struct pf_pptp_state {
913 struct pf_state *grev1_state;
914 };
915
916 struct pf_grev1_state {
917 struct pf_state *pptp_state;
918 };
919
920 struct pf_ike_state {
921 u_int64_t cookie;
922 };
923
924 struct pf_app_state {
925 pf_app_handler handler;
926 pf_app_compare compare_lan_ext;
927 pf_app_compare compare_ext_gwy;
928 union {
929 struct pf_pptp_state pptp;
930 struct pf_grev1_state grev1;
931 struct pf_ike_state ike;
932 } u;
933 };
934 #endif /* KERNEL */
935 #define PF_GRE_PPTP_VARIANT 0x01
936 #endif /* !NO_APPLE_EXTENSIONS */
937
938 #ifdef KERNEL
939 /* keep synced with struct pf_state, used in RB_FIND */
940 struct pf_state_key_cmp {
941 struct pf_state_host lan;
942 struct pf_state_host gwy;
943 struct pf_state_host ext;
944 sa_family_t af;
945 u_int8_t proto;
946 u_int8_t direction;
947 #ifndef NO_APPLE_EXTENSIONS
948 u_int8_t proto_variant;
949 struct pf_app_state *app_state;
950 #else /* NO_APPLE_EXTENSIONS */
951 u_int8_t pad;
952 #endif /* NO_APPLE_EXTENSIONS */
953 };
954
955 TAILQ_HEAD(pf_statelist, pf_state);
956
957 struct pf_state_key {
958 struct pf_state_host lan;
959 struct pf_state_host gwy;
960 struct pf_state_host ext;
961 sa_family_t af;
962 u_int8_t proto;
963 u_int8_t direction;
964 #ifndef NO_APPLE_EXTENSIONS
965 u_int8_t proto_variant;
966 struct pf_app_state *app_state;
967 #else /* NO_APPLE_EXTENSIONS */
968 u_int8_t pad;
969 #endif /* NO_APPLE_EXTENSIONS */
970
971 RB_ENTRY(pf_state_key) entry_lan_ext;
972 RB_ENTRY(pf_state_key) entry_ext_gwy;
973 struct pf_statelist states;
974 u_short refcnt; /* same size as if_index */
975 };
976
977
978 /* keep synced with struct pf_state, used in RB_FIND */
979 struct pf_state_cmp {
980 u_int64_t id;
981 u_int32_t creatorid;
982 u_int32_t pad;
983 };
984 #endif /* KERNEL */
985
986 struct hook_desc;
987 TAILQ_HEAD(hook_desc_head, hook_desc);
988
989 #ifdef KERNEL
990 struct pf_state {
991 u_int64_t id;
992 u_int32_t creatorid;
993 u_int32_t pad;
994
995 TAILQ_ENTRY(pf_state) entry_list;
996 TAILQ_ENTRY(pf_state) next;
997 RB_ENTRY(pf_state) entry_id;
998 struct pf_state_peer src;
999 struct pf_state_peer dst;
1000 union pf_rule_ptr rule;
1001 union pf_rule_ptr anchor;
1002 union pf_rule_ptr nat_rule;
1003 struct pf_addr rt_addr;
1004 #ifndef NO_APPLE_EXTENSIONS
1005 struct hook_desc_head unlink_hooks;
1006 #endif /* !NO_APPLE_EXTENSIONS */
1007 struct pf_state_key *state_key;
1008 struct pfi_kif *kif;
1009 struct pfi_kif *rt_kif;
1010 struct pf_src_node *src_node;
1011 struct pf_src_node *nat_src_node;
1012 u_int64_t packets[2];
1013 u_int64_t bytes[2];
1014 u_int64_t creation;
1015 u_int64_t expire;
1016 u_int64_t pfsync_time;
1017 u_int16_t tag;
1018 u_int8_t log;
1019 u_int8_t allow_opts;
1020 u_int8_t timeout;
1021 u_int8_t sync_flags;
1022 };
1023 #endif /* KERNEL */
1024
1025 #define PFSTATE_NOSYNC 0x01
1026 #define PFSTATE_FROMSYNC 0x02
1027 #define PFSTATE_STALE 0x04
1028
1029 #define __packed __attribute__((__packed__))
1030
1031 /*
1032 * Unified state structures for pulling states out of the kernel
1033 * used by pfsync(4) and the pf(4) ioctl.
1034 */
1035 struct pfsync_state_scrub {
1036 u_int16_t pfss_flags;
1037 u_int8_t pfss_ttl; /* stashed TTL */
1038 #define PFSYNC_SCRUB_FLAG_VALID 0x01
1039 u_int8_t scrub_flag;
1040 u_int32_t pfss_ts_mod; /* timestamp modulation */
1041 } __packed;
1042
1043 struct pfsync_state_host {
1044 struct pf_addr addr;
1045 #ifndef NO_APPLE_EXTENSIONS
1046 union pf_state_xport xport;
1047 u_int16_t pad[2];
1048 #else /* NO_APPLE_EXTENSIONS */
1049 u_int16_t port;
1050 u_int16_t pad[3];
1051 #endif /* NO_APPLE_EXTENSIONS */
1052 } __packed;
1053
1054 struct pfsync_state_peer {
1055 struct pfsync_state_scrub scrub; /* state is scrubbed */
1056 u_int32_t seqlo; /* Max sequence number sent */
1057 u_int32_t seqhi; /* Max the other end ACKd + win */
1058 u_int32_t seqdiff; /* Sequence number modulator */
1059 u_int16_t max_win; /* largest window (pre scaling) */
1060 u_int16_t mss; /* Maximum segment size option */
1061 u_int8_t state; /* active state level */
1062 u_int8_t wscale; /* window scaling factor */
1063 u_int8_t pad[6];
1064 } __packed;
1065
1066 struct pfsync_state {
1067 u_int32_t id[2];
1068 char ifname[IFNAMSIZ];
1069 struct pfsync_state_host lan;
1070 struct pfsync_state_host gwy;
1071 struct pfsync_state_host ext;
1072 struct pfsync_state_peer src;
1073 struct pfsync_state_peer dst;
1074 struct pf_addr rt_addr;
1075 #ifndef NO_APPLE_EXTENSIONS
1076 struct hook_desc_head unlink_hooks;
1077 #if !defined(__LP64__)
1078 u_int32_t _pad[2];
1079 #endif /* !__LP64__ */
1080 #endif /* !NO_APPLE_EXTENSIONS */
1081 u_int32_t rule;
1082 u_int32_t anchor;
1083 u_int32_t nat_rule;
1084 u_int64_t creation;
1085 u_int64_t expire;
1086 u_int32_t packets[2][2];
1087 u_int32_t bytes[2][2];
1088 u_int32_t creatorid;
1089 #ifndef NO_APPLE_EXTENSIONS
1090 u_int16_t tag;
1091 #endif /* !NO_APPLE_EXTENSIONS */
1092 sa_family_t af;
1093 u_int8_t proto;
1094 u_int8_t direction;
1095 u_int8_t log;
1096 u_int8_t allow_opts;
1097 u_int8_t timeout;
1098 u_int8_t sync_flags;
1099 u_int8_t updates;
1100 #ifndef NO_APPLE_EXTENSIONS
1101 u_int8_t proto_variant;
1102 #endif /* !NO_APPLE_EXTENSIONS */
1103 } __packed;
1104
1105 #define PFSYNC_FLAG_COMPRESS 0x01
1106 #define PFSYNC_FLAG_STALE 0x02
1107 #define PFSYNC_FLAG_SRCNODE 0x04
1108 #define PFSYNC_FLAG_NATSRCNODE 0x08
1109
1110 #ifdef KERNEL
1111 /* for copies to/from userland via pf_ioctl() */
1112 #define pf_state_peer_to_pfsync(s, d) do { \
1113 (d)->seqlo = (s)->seqlo; \
1114 (d)->seqhi = (s)->seqhi; \
1115 (d)->seqdiff = (s)->seqdiff; \
1116 (d)->max_win = (s)->max_win; \
1117 (d)->mss = (s)->mss; \
1118 (d)->state = (s)->state; \
1119 (d)->wscale = (s)->wscale; \
1120 if ((s)->scrub) { \
1121 (d)->scrub.pfss_flags = \
1122 (s)->scrub->pfss_flags & PFSS_TIMESTAMP; \
1123 (d)->scrub.pfss_ttl = (s)->scrub->pfss_ttl; \
1124 (d)->scrub.pfss_ts_mod = (s)->scrub->pfss_ts_mod; \
1125 (d)->scrub.scrub_flag = PFSYNC_SCRUB_FLAG_VALID; \
1126 } \
1127 } while (0)
1128
1129 #define pf_state_peer_from_pfsync(s, d) do { \
1130 (d)->seqlo = (s)->seqlo; \
1131 (d)->seqhi = (s)->seqhi; \
1132 (d)->seqdiff = (s)->seqdiff; \
1133 (d)->max_win = (s)->max_win; \
1134 (d)->mss = ntohs((s)->mss); \
1135 (d)->state = (s)->state; \
1136 (d)->wscale = (s)->wscale; \
1137 if ((s)->scrub.scrub_flag == PFSYNC_SCRUB_FLAG_VALID && \
1138 (d)->scrub != NULL) { \
1139 (d)->scrub->pfss_flags = \
1140 ntohs((s)->scrub.pfss_flags) & PFSS_TIMESTAMP; \
1141 (d)->scrub->pfss_ttl = (s)->scrub.pfss_ttl; \
1142 (d)->scrub->pfss_ts_mod = (s)->scrub.pfss_ts_mod; \
1143 } \
1144 } while (0)
1145 #endif /* KERNEL */
1146
1147 #define pf_state_counter_to_pfsync(s, d) do { \
1148 d[0] = (s>>32)&0xffffffff; \
1149 d[1] = s&0xffffffff; \
1150 } while (0)
1151
1152 #define pf_state_counter_from_pfsync(s) \
1153 (((u_int64_t)(s[0])<<32) | (u_int64_t)(s[1]))
1154
1155
1156
1157 TAILQ_HEAD(pf_rulequeue, pf_rule);
1158
1159 struct pf_anchor;
1160
1161 struct pf_ruleset {
1162 struct {
1163 struct pf_rulequeue queues[2];
1164 struct {
1165 struct pf_rulequeue *ptr;
1166 struct pf_rule **ptr_array;
1167 u_int32_t rcount;
1168 u_int32_t ticket;
1169 int open;
1170 } active, inactive;
1171 } rules[PF_RULESET_MAX];
1172 struct pf_anchor *anchor;
1173 u_int32_t tticket;
1174 int tables;
1175 int topen;
1176 };
1177
1178 RB_HEAD(pf_anchor_global, pf_anchor);
1179 RB_HEAD(pf_anchor_node, pf_anchor);
1180 struct pf_anchor {
1181 RB_ENTRY(pf_anchor) entry_global;
1182 RB_ENTRY(pf_anchor) entry_node;
1183 struct pf_anchor *parent;
1184 struct pf_anchor_node children;
1185 char name[PF_ANCHOR_NAME_SIZE];
1186 char path[MAXPATHLEN];
1187 struct pf_ruleset ruleset;
1188 int refcnt; /* anchor rules */
1189 int match;
1190 };
1191 #ifdef KERNEL
1192 RB_PROTOTYPE_SC(__private_extern__, pf_anchor_global, pf_anchor, entry_global,
1193 pf_anchor_compare);
1194 RB_PROTOTYPE_SC(__private_extern__, pf_anchor_node, pf_anchor, entry_node,
1195 pf_anchor_compare);
1196 #else /* !KERNEL */
1197 RB_PROTOTYPE(pf_anchor_global, pf_anchor, entry_global, pf_anchor_compare);
1198 RB_PROTOTYPE(pf_anchor_node, pf_anchor, entry_node, pf_anchor_compare);
1199 #endif /* !KERNEL */
1200
1201 #define PF_RESERVED_ANCHOR "_pf"
1202
1203 #define PFR_TFLAG_PERSIST 0x00000001
1204 #define PFR_TFLAG_CONST 0x00000002
1205 #define PFR_TFLAG_ACTIVE 0x00000004
1206 #define PFR_TFLAG_INACTIVE 0x00000008
1207 #define PFR_TFLAG_REFERENCED 0x00000010
1208 #define PFR_TFLAG_REFDANCHOR 0x00000020
1209 #define PFR_TFLAG_USRMASK 0x00000003
1210 #define PFR_TFLAG_SETMASK 0x0000003C
1211 #define PFR_TFLAG_ALLMASK 0x0000003F
1212
1213 struct pfr_table {
1214 char pfrt_anchor[MAXPATHLEN];
1215 char pfrt_name[PF_TABLE_NAME_SIZE];
1216 u_int32_t pfrt_flags;
1217 u_int8_t pfrt_fback;
1218 };
1219
1220 enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED,
1221 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE,
1222 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_MAX };
1223
1224 struct pfr_addr {
1225 union {
1226 struct in_addr _pfra_ip4addr;
1227 struct in6_addr _pfra_ip6addr;
1228 } pfra_u;
1229 u_int8_t pfra_af;
1230 u_int8_t pfra_net;
1231 u_int8_t pfra_not;
1232 u_int8_t pfra_fback;
1233 };
1234 #define pfra_ip4addr pfra_u._pfra_ip4addr
1235 #define pfra_ip6addr pfra_u._pfra_ip6addr
1236
1237 enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX };
1238 enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX };
1239 #define PFR_OP_XPASS PFR_OP_ADDR_MAX
1240
1241 struct pfr_astats {
1242 struct pfr_addr pfras_a;
1243 #if !defined(__LP64__)
1244 u_int32_t _pad;
1245 #endif /* !__LP64__ */
1246 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
1247 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
1248 u_int64_t pfras_tzero;
1249 };
1250
1251 enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX };
1252
1253 struct pfr_tstats {
1254 struct pfr_table pfrts_t;
1255 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
1256 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
1257 u_int64_t pfrts_match;
1258 u_int64_t pfrts_nomatch;
1259 u_int64_t pfrts_tzero;
1260 int pfrts_cnt;
1261 int pfrts_refcnt[PFR_REFCNT_MAX];
1262 #if !defined(__LP64__)
1263 u_int32_t _pad;
1264 #endif /* !__LP64__ */
1265 };
1266 #define pfrts_name pfrts_t.pfrt_name
1267 #define pfrts_flags pfrts_t.pfrt_flags
1268
1269 #ifdef KERNEL
1270 SLIST_HEAD(pfr_kentryworkq, pfr_kentry);
1271 struct pfr_kentry {
1272 struct radix_node pfrke_node[2];
1273 union sockaddr_union pfrke_sa;
1274 u_int64_t pfrke_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
1275 u_int64_t pfrke_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
1276 SLIST_ENTRY(pfr_kentry) pfrke_workq;
1277 u_int64_t pfrke_tzero;
1278 u_int8_t pfrke_af;
1279 u_int8_t pfrke_net;
1280 u_int8_t pfrke_not;
1281 u_int8_t pfrke_mark;
1282 u_int8_t pfrke_intrpool;
1283 };
1284
1285 SLIST_HEAD(pfr_ktableworkq, pfr_ktable);
1286 RB_HEAD(pfr_ktablehead, pfr_ktable);
1287 struct pfr_ktable {
1288 struct pfr_tstats pfrkt_ts;
1289 RB_ENTRY(pfr_ktable) pfrkt_tree;
1290 SLIST_ENTRY(pfr_ktable) pfrkt_workq;
1291 struct radix_node_head *pfrkt_ip4;
1292 struct radix_node_head *pfrkt_ip6;
1293 struct pfr_ktable *pfrkt_shadow;
1294 struct pfr_ktable *pfrkt_root;
1295 struct pf_ruleset *pfrkt_rs;
1296 u_int64_t pfrkt_larg;
1297 u_int32_t pfrkt_nflags;
1298 };
1299 #define pfrkt_t pfrkt_ts.pfrts_t
1300 #define pfrkt_name pfrkt_t.pfrt_name
1301 #define pfrkt_anchor pfrkt_t.pfrt_anchor
1302 #define pfrkt_ruleset pfrkt_t.pfrt_ruleset
1303 #define pfrkt_flags pfrkt_t.pfrt_flags
1304 #define pfrkt_cnt pfrkt_ts.pfrts_cnt
1305 #define pfrkt_refcnt pfrkt_ts.pfrts_refcnt
1306 #define pfrkt_packets pfrkt_ts.pfrts_packets
1307 #define pfrkt_bytes pfrkt_ts.pfrts_bytes
1308 #define pfrkt_match pfrkt_ts.pfrts_match
1309 #define pfrkt_nomatch pfrkt_ts.pfrts_nomatch
1310 #define pfrkt_tzero pfrkt_ts.pfrts_tzero
1311
1312 RB_HEAD(pf_state_tree_lan_ext, pf_state_key);
1313 RB_PROTOTYPE_SC(__private_extern__, pf_state_tree_lan_ext, pf_state_key,
1314 entry_lan_ext, pf_state_compare_lan_ext);
1315
1316 RB_HEAD(pf_state_tree_ext_gwy, pf_state_key);
1317 RB_PROTOTYPE_SC(__private_extern__, pf_state_tree_ext_gwy, pf_state_key,
1318 entry_ext_gwy, pf_state_compare_ext_gwy);
1319
1320 RB_HEAD(pfi_ifhead, pfi_kif);
1321
1322 /* state tables */
1323 __private_extern__ struct pf_state_tree_lan_ext pf_statetbl_lan_ext;
1324 __private_extern__ struct pf_state_tree_ext_gwy pf_statetbl_ext_gwy;
1325
1326 /* keep synced with pfi_kif, used in RB_FIND */
1327 struct pfi_kif_cmp {
1328 char pfik_name[IFNAMSIZ];
1329 };
1330
1331 struct pfi_kif {
1332 char pfik_name[IFNAMSIZ];
1333 RB_ENTRY(pfi_kif) pfik_tree;
1334 u_int64_t pfik_packets[2][2][2];
1335 u_int64_t pfik_bytes[2][2][2];
1336 u_int64_t pfik_tzero;
1337 int pfik_flags;
1338 void *pfik_ah_cookie;
1339 struct ifnet *pfik_ifp;
1340 int pfik_states;
1341 int pfik_rules;
1342 TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs;
1343 };
1344
1345 enum pfi_kif_refs {
1346 PFI_KIF_REF_NONE,
1347 PFI_KIF_REF_STATE,
1348 PFI_KIF_REF_RULE
1349 };
1350
1351 struct pfi_uif {
1352 #else /* !KERNEL */
1353 struct pfi_kif {
1354 #endif /* !KERNEL */
1355 char pfik_name[IFNAMSIZ];
1356 u_int64_t pfik_packets[2][2][2];
1357 u_int64_t pfik_bytes[2][2][2];
1358 u_int64_t pfik_tzero;
1359 int pfik_flags;
1360 int pfik_states;
1361 int pfik_rules;
1362 #if !defined(__LP64__)
1363 u_int32_t _pad;
1364 #endif /* !__LP64__ */
1365 };
1366
1367 #define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */
1368
1369 #ifdef KERNEL
1370 struct pf_pdesc {
1371 struct {
1372 int done;
1373 uid_t uid;
1374 gid_t gid;
1375 pid_t pid;
1376 } lookup;
1377 u_int64_t tot_len; /* Make Mickey money */
1378 union {
1379 struct tcphdr *tcp;
1380 struct udphdr *udp;
1381 struct icmp *icmp;
1382 #if INET6
1383 struct icmp6_hdr *icmp6;
1384 #endif /* INET6 */
1385 #ifndef NO_APPLE_EXTENSIONS
1386 struct pf_grev1_hdr *grev1;
1387 struct pf_esp_hdr *esp;
1388 #endif /* !NO_APPLE_EXTENSIONS */
1389 void *any;
1390 } hdr;
1391 struct pf_addr baddr; /* address before translation */
1392 struct pf_addr naddr; /* address after translation */
1393 struct pf_rule *nat_rule; /* nat/rdr rule applied to packet */
1394 struct pf_addr *src;
1395 struct pf_addr *dst;
1396 struct ether_header
1397 *eh;
1398 #ifndef NO_APPLE_EXTENSIONS
1399 struct mbuf *mp;
1400 int lmw; /* lazy writable offset */
1401 #endif /* !NO_APPLE_EXTENSIONS */
1402 struct pf_mtag *pf_mtag;
1403 u_int16_t *ip_sum;
1404 u_int32_t p_len; /* total length of payload */
1405 u_int16_t flags; /* Let SCRUB trigger behavior in */
1406 /* state code. Easier than tags */
1407 #define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */
1408 #define PFDESC_IP_REAS 0x0002 /* IP frags would've been reassembled */
1409 sa_family_t af;
1410 u_int8_t proto;
1411 u_int8_t tos;
1412 #ifndef NO_APPLE_EXTENSIONS
1413 u_int8_t proto_variant;
1414 #endif /* !NO_APPLE_EXTENSIONS */
1415 };
1416 #endif /* KERNEL */
1417
1418 /* flags for RDR options */
1419 #define PF_DPORT_RANGE 0x01 /* Dest port uses range */
1420 #define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */
1421
1422 /* Reasons code for passing/dropping a packet */
1423 #define PFRES_MATCH 0 /* Explicit match of a rule */
1424 #define PFRES_BADOFF 1 /* Bad offset for pull_hdr */
1425 #define PFRES_FRAG 2 /* Dropping following fragment */
1426 #define PFRES_SHORT 3 /* Dropping short packet */
1427 #define PFRES_NORM 4 /* Dropping by normalizer */
1428 #define PFRES_MEMORY 5 /* Dropped due to lacking mem */
1429 #define PFRES_TS 6 /* Bad TCP Timestamp (RFC1323) */
1430 #define PFRES_CONGEST 7 /* Congestion (of ipintrq) */
1431 #define PFRES_IPOPTIONS 8 /* IP option */
1432 #define PFRES_PROTCKSUM 9 /* Protocol checksum invalid */
1433 #define PFRES_BADSTATE 10 /* State mismatch */
1434 #define PFRES_STATEINS 11 /* State insertion failure */
1435 #define PFRES_MAXSTATES 12 /* State limit */
1436 #define PFRES_SRCLIMIT 13 /* Source node/conn limit */
1437 #define PFRES_SYNPROXY 14 /* SYN proxy */
1438 #define PFRES_MAX 15 /* total+1 */
1439
1440 #define PFRES_NAMES { \
1441 "match", \
1442 "bad-offset", \
1443 "fragment", \
1444 "short", \
1445 "normalize", \
1446 "memory", \
1447 "bad-timestamp", \
1448 "congestion", \
1449 "ip-option", \
1450 "proto-cksum", \
1451 "state-mismatch", \
1452 "state-insert", \
1453 "state-limit", \
1454 "src-limit", \
1455 "synproxy", \
1456 NULL \
1457 }
1458
1459 /* Counters for other things we want to keep track of */
1460 #define LCNT_STATES 0 /* states */
1461 #define LCNT_SRCSTATES 1 /* max-src-states */
1462 #define LCNT_SRCNODES 2 /* max-src-nodes */
1463 #define LCNT_SRCCONN 3 /* max-src-conn */
1464 #define LCNT_SRCCONNRATE 4 /* max-src-conn-rate */
1465 #define LCNT_OVERLOAD_TABLE 5 /* entry added to overload table */
1466 #define LCNT_OVERLOAD_FLUSH 6 /* state entries flushed */
1467 #define LCNT_MAX 7 /* total+1 */
1468
1469 #define LCNT_NAMES { \
1470 "max states per rule", \
1471 "max-src-states", \
1472 "max-src-nodes", \
1473 "max-src-conn", \
1474 "max-src-conn-rate", \
1475 "overload table insertion", \
1476 "overload flush states", \
1477 NULL \
1478 }
1479
1480 /* UDP state enumeration */
1481 #define PFUDPS_NO_TRAFFIC 0
1482 #define PFUDPS_SINGLE 1
1483 #define PFUDPS_MULTIPLE 2
1484
1485 #define PFUDPS_NSTATES 3 /* number of state levels */
1486
1487 #define PFUDPS_NAMES { \
1488 "NO_TRAFFIC", \
1489 "SINGLE", \
1490 "MULTIPLE", \
1491 NULL \
1492 }
1493
1494 #ifndef NO_APPLE_EXTENSIONS
1495 /* GREv1 protocol state enumeration */
1496 #define PFGRE1S_NO_TRAFFIC 0
1497 #define PFGRE1S_INITIATING 1
1498 #define PFGRE1S_ESTABLISHED 2
1499
1500 #define PFGRE1S_NSTATES 3 /* number of state levels */
1501
1502 #define PFGRE1S_NAMES { \
1503 "NO_TRAFFIC", \
1504 "INITIATING", \
1505 "ESTABLISHED", \
1506 NULL \
1507 }
1508
1509 #define PFESPS_NO_TRAFFIC 0
1510 #define PFESPS_INITIATING 1
1511 #define PFESPS_ESTABLISHED 2
1512
1513 #define PFESPS_NSTATES 3 /* number of state levels */
1514
1515 #define PFESPS_NAMES { "NO_TRAFFIC", "INITIATING", "ESTABLISHED", NULL }
1516 #endif /* !NO_APPLE_EXTENSIONS */
1517
1518 /* Other protocol state enumeration */
1519 #define PFOTHERS_NO_TRAFFIC 0
1520 #define PFOTHERS_SINGLE 1
1521 #define PFOTHERS_MULTIPLE 2
1522
1523 #define PFOTHERS_NSTATES 3 /* number of state levels */
1524
1525 #define PFOTHERS_NAMES { \
1526 "NO_TRAFFIC", \
1527 "SINGLE", \
1528 "MULTIPLE", \
1529 NULL \
1530 }
1531
1532 #define FCNT_STATE_SEARCH 0
1533 #define FCNT_STATE_INSERT 1
1534 #define FCNT_STATE_REMOVALS 2
1535 #define FCNT_MAX 3
1536
1537 #define SCNT_SRC_NODE_SEARCH 0
1538 #define SCNT_SRC_NODE_INSERT 1
1539 #define SCNT_SRC_NODE_REMOVALS 2
1540 #define SCNT_MAX 3
1541
1542 #ifdef KERNEL
1543 #define ACTION_SET(a, x) \
1544 do { \
1545 if ((a) != NULL) \
1546 *(a) = (x); \
1547 } while (0)
1548
1549 #define REASON_SET(a, x) \
1550 do { \
1551 if ((a) != NULL) \
1552 *(a) = (x); \
1553 if (x < PFRES_MAX) \
1554 pf_status.counters[x]++; \
1555 } while (0)
1556 #endif /* KERNEL */
1557
1558 struct pf_status {
1559 u_int64_t counters[PFRES_MAX];
1560 u_int64_t lcounters[LCNT_MAX]; /* limit counters */
1561 u_int64_t fcounters[FCNT_MAX];
1562 u_int64_t scounters[SCNT_MAX];
1563 u_int64_t pcounters[2][2][3];
1564 u_int64_t bcounters[2][2];
1565 u_int64_t stateid;
1566 u_int32_t running;
1567 u_int32_t states;
1568 u_int32_t src_nodes;
1569 u_int64_t since __attribute__((aligned(8)));
1570 u_int32_t debug;
1571 u_int32_t hostid;
1572 char ifname[IFNAMSIZ];
1573 u_int8_t pf_chksum[PF_MD5_DIGEST_LENGTH];
1574 };
1575
1576 struct cbq_opts {
1577 u_int minburst;
1578 u_int maxburst;
1579 u_int pktsize;
1580 u_int maxpktsize;
1581 u_int ns_per_byte;
1582 u_int maxidle;
1583 int minidle;
1584 u_int offtime;
1585 int flags;
1586 };
1587
1588 struct priq_opts {
1589 int flags;
1590 };
1591
1592 struct hfsc_opts {
1593 /* real-time service curve */
1594 u_int rtsc_m1; /* slope of the 1st segment in bps */
1595 u_int rtsc_d; /* the x-projection of m1 in msec */
1596 u_int rtsc_m2; /* slope of the 2nd segment in bps */
1597 /* link-sharing service curve */
1598 u_int lssc_m1;
1599 u_int lssc_d;
1600 u_int lssc_m2;
1601 /* upper-limit service curve */
1602 u_int ulsc_m1;
1603 u_int ulsc_d;
1604 u_int ulsc_m2;
1605 int flags;
1606 };
1607
1608 struct pf_altq {
1609 char ifname[IFNAMSIZ];
1610
1611 void *altq_disc; /* discipline-specific state */
1612 #if !defined(__LP64__)
1613 u_int32_t _pad;
1614 #endif /* !__LP64__ */
1615 TAILQ_ENTRY(pf_altq) entries;
1616 #if !defined(__LP64__)
1617 u_int32_t __pad[2];
1618 #endif /* !__LP64__ */
1619
1620 /* scheduler spec */
1621 u_int8_t scheduler; /* scheduler type */
1622 u_int16_t tbrsize; /* tokenbucket regulator size */
1623 u_int32_t ifbandwidth; /* interface bandwidth */
1624
1625 /* queue spec */
1626 char qname[PF_QNAME_SIZE]; /* queue name */
1627 char parent[PF_QNAME_SIZE]; /* parent name */
1628 u_int32_t parent_qid; /* parent queue id */
1629 u_int32_t bandwidth; /* queue bandwidth */
1630 u_int8_t priority; /* priority */
1631 u_int16_t qlimit; /* queue size limit */
1632 u_int16_t flags; /* misc flags */
1633 union {
1634 struct cbq_opts cbq_opts;
1635 struct priq_opts priq_opts;
1636 struct hfsc_opts hfsc_opts;
1637 } pq_u;
1638
1639 u_int32_t qid; /* return value */
1640 };
1641
1642 struct pf_tagname {
1643 TAILQ_ENTRY(pf_tagname) entries;
1644 char name[PF_TAG_NAME_SIZE];
1645 u_int16_t tag;
1646 int ref;
1647 };
1648
1649 #define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */
1650 #define PFFRAG_FRAG_HIWAT 1000 /* Number of fragmented packets */
1651 #define PFFRAG_FRCENT_HIWAT 50000 /* Number of fragment cache entries */
1652 #define PFFRAG_FRCACHE_HIWAT 10000 /* Number of fragment descriptors */
1653
1654 #define PFR_KTABLE_HIWAT 1000 /* Number of tables */
1655 #define PFR_KENTRY_HIWAT 200000 /* Number of table entries */
1656 #define PFR_KENTRY_HIWAT_SMALL 100000 /* Number of table entries (tiny hosts) */
1657
1658 /*
1659 * ioctl parameter structures
1660 */
1661
1662 struct pfioc_pooladdr {
1663 u_int32_t action;
1664 u_int32_t ticket;
1665 u_int32_t nr;
1666 u_int32_t r_num;
1667 u_int8_t r_action;
1668 u_int8_t r_last;
1669 u_int8_t af;
1670 char anchor[MAXPATHLEN];
1671 struct pf_pooladdr addr;
1672 };
1673
1674 struct pfioc_rule {
1675 u_int32_t action;
1676 u_int32_t ticket;
1677 u_int32_t pool_ticket;
1678 u_int32_t nr;
1679 char anchor[MAXPATHLEN];
1680 char anchor_call[MAXPATHLEN];
1681 struct pf_rule rule;
1682 };
1683
1684 struct pfioc_natlook {
1685 struct pf_addr saddr;
1686 struct pf_addr daddr;
1687 struct pf_addr rsaddr;
1688 struct pf_addr rdaddr;
1689 #ifndef NO_APPLE_EXTENSIONS
1690 union pf_state_xport sxport;
1691 union pf_state_xport dxport;
1692 union pf_state_xport rsxport;
1693 union pf_state_xport rdxport;
1694 sa_family_t af;
1695 u_int8_t proto;
1696 u_int8_t proto_variant;
1697 u_int8_t direction;
1698 #else /* NO_APPLE_EXTENSIONS */
1699 u_int16_t sport;
1700 u_int16_t dport;
1701 u_int16_t rsport;
1702 u_int16_t rdport;
1703 sa_family_t af;
1704 u_int8_t proto;
1705 u_int8_t direction;
1706 #endif /* NO_APPLE_EXTENSIONS */
1707 };
1708
1709 struct pfioc_state {
1710 struct pfsync_state state;
1711 };
1712
1713 struct pfioc_src_node_kill {
1714 /* XXX returns the number of src nodes killed in psnk_af */
1715 sa_family_t psnk_af;
1716 struct pf_rule_addr psnk_src;
1717 struct pf_rule_addr psnk_dst;
1718 };
1719
1720 #ifndef NO_APPLE_EXTENSIONS
1721 struct pfioc_state_addr_kill {
1722 struct pf_addr_wrap addr;
1723 u_int8_t reserved_[3];
1724 u_int8_t neg;
1725 union pf_rule_xport xport;
1726 };
1727 #endif /* !NO_APPLE_EXTENSIONS */
1728
1729 struct pfioc_state_kill {
1730 /* XXX returns the number of states killed in psk_af */
1731 sa_family_t psk_af;
1732 #ifndef NO_APPLE_EXTENSIONS
1733 u_int8_t psk_proto;
1734 u_int8_t psk_proto_variant;
1735 u_int8_t _pad;
1736 struct pfioc_state_addr_kill psk_src;
1737 struct pfioc_state_addr_kill psk_dst;
1738 #else /* NO_APPLE_EXTENSIONS */
1739 int psk_proto;
1740 struct pf_rule_addr psk_src;
1741 struct pf_rule_addr psk_dst;
1742 #endif /* NO_APPLE_EXTENSIONS */
1743 char psk_ifname[IFNAMSIZ];
1744 };
1745
1746 struct pfioc_states {
1747 int ps_len;
1748 union {
1749 caddr_t psu_buf;
1750 struct pfsync_state *psu_states;
1751 } ps_u __attribute__((aligned(8)));
1752 #define ps_buf ps_u.psu_buf
1753 #define ps_states ps_u.psu_states
1754 };
1755
1756 #ifdef KERNEL
1757 struct pfioc_states_32 {
1758 int ps_len;
1759 union {
1760 user32_addr_t psu_buf;
1761 user32_addr_t psu_states;
1762 } ps_u __attribute__((aligned(8)));
1763 };
1764
1765 struct pfioc_states_64 {
1766 int ps_len;
1767 union {
1768 user64_addr_t psu_buf;
1769 user64_addr_t psu_states;
1770 } ps_u __attribute__((aligned(8)));
1771 };
1772 #endif /* KERNEL */
1773
1774 #define PFTOK_PROCNAME_LEN 64
1775 #pragma pack(1)
1776 struct pfioc_token {
1777 u_int64_t token_value;
1778 u_int64_t timestamp;
1779 pid_t pid;
1780 char proc_name[PFTOK_PROCNAME_LEN];
1781 };
1782 #pragma pack()
1783
1784 struct pfioc_kernel_token {
1785 SLIST_ENTRY(pfioc_kernel_token) next;
1786 struct pfioc_token token;
1787 };
1788
1789 struct pfioc_remove_token {
1790 u_int64_t token_value;
1791 u_int64_t refcount;
1792 };
1793
1794 struct pfioc_tokens {
1795 int size;
1796 union {
1797 caddr_t pgtu_buf;
1798 struct pfioc_token *pgtu_tokens;
1799 } pgt_u __attribute__((aligned(8)));
1800 #define pgt_buf pgt_u.pgtu_buf
1801 #define pgt_tokens pgt_u.pgtu_tokens
1802 };
1803
1804 #ifdef KERNEL
1805 struct pfioc_tokens_32 {
1806 int size;
1807 union {
1808 user32_addr_t pgtu_buf;
1809 user32_addr_t pgtu_tokens;
1810 } pgt_u __attribute__((aligned(8)));
1811 };
1812
1813 struct pfioc_tokens_64 {
1814 int size;
1815 union {
1816 user64_addr_t pgtu_buf;
1817 user64_addr_t pgtu_tokens;
1818 } pgt_u __attribute__((aligned(8)));
1819 };
1820 #endif /* KERNEL */
1821
1822
1823 struct pfioc_src_nodes {
1824 int psn_len;
1825 union {
1826 caddr_t psu_buf;
1827 struct pf_src_node *psu_src_nodes;
1828 } psn_u __attribute__((aligned(8)));
1829 #define psn_buf psn_u.psu_buf
1830 #define psn_src_nodes psn_u.psu_src_nodes
1831 };
1832
1833 #ifdef KERNEL
1834 struct pfioc_src_nodes_32 {
1835 int psn_len;
1836 union {
1837 user32_addr_t psu_buf;
1838 user32_addr_t psu_src_nodes;
1839 } psn_u __attribute__((aligned(8)));
1840 };
1841
1842 struct pfioc_src_nodes_64 {
1843 int psn_len;
1844 union {
1845 user64_addr_t psu_buf;
1846 user64_addr_t psu_src_nodes;
1847 } psn_u __attribute__((aligned(8)));
1848 };
1849 #endif /* KERNEL */
1850
1851 struct pfioc_if {
1852 char ifname[IFNAMSIZ];
1853 };
1854
1855 struct pfioc_tm {
1856 int timeout;
1857 int seconds;
1858 };
1859
1860 struct pfioc_limit {
1861 int index;
1862 unsigned limit;
1863 };
1864
1865 struct pfioc_altq {
1866 u_int32_t action;
1867 u_int32_t ticket;
1868 u_int32_t nr;
1869 struct pf_altq altq __attribute__((aligned(8)));
1870 };
1871
1872 struct pfioc_qstats {
1873 u_int32_t ticket;
1874 u_int32_t nr;
1875 void *buf __attribute__((aligned(8)));
1876 int nbytes __attribute__((aligned(8)));
1877 u_int8_t scheduler;
1878 };
1879
1880 struct pfioc_ruleset {
1881 u_int32_t nr;
1882 char path[MAXPATHLEN];
1883 char name[PF_ANCHOR_NAME_SIZE];
1884 };
1885
1886 #define PF_RULESET_ALTQ (PF_RULESET_MAX)
1887 #define PF_RULESET_TABLE (PF_RULESET_MAX+1)
1888 struct pfioc_trans {
1889 int size; /* number of elements */
1890 int esize; /* size of each element in bytes */
1891 struct pfioc_trans_e {
1892 int rs_num;
1893 char anchor[MAXPATHLEN];
1894 u_int32_t ticket;
1895 } *array __attribute__((aligned(8)));
1896 };
1897
1898 #ifdef KERNEL
1899 struct pfioc_trans_32 {
1900 int size; /* number of elements */
1901 int esize; /* size of each element in bytes */
1902 user32_addr_t array __attribute__((aligned(8)));
1903 };
1904
1905 struct pfioc_trans_64 {
1906 int size; /* number of elements */
1907 int esize; /* size of each element in bytes */
1908 user64_addr_t array __attribute__((aligned(8)));
1909 };
1910 #endif /* KERNEL */
1911
1912
1913 #define PFR_FLAG_ATOMIC 0x00000001
1914 #define PFR_FLAG_DUMMY 0x00000002
1915 #define PFR_FLAG_FEEDBACK 0x00000004
1916 #define PFR_FLAG_CLSTATS 0x00000008
1917 #define PFR_FLAG_ADDRSTOO 0x00000010
1918 #define PFR_FLAG_REPLACE 0x00000020
1919 #define PFR_FLAG_ALLRSETS 0x00000040
1920 #define PFR_FLAG_ALLMASK 0x0000007F
1921 #ifdef KERNEL
1922 #define PFR_FLAG_USERIOCTL 0x10000000
1923 #endif /* KERNEL */
1924
1925 struct pfioc_table {
1926 struct pfr_table pfrio_table;
1927 void *pfrio_buffer __attribute__((aligned(8)));
1928 int pfrio_esize __attribute__((aligned(8)));
1929 int pfrio_size;
1930 int pfrio_size2;
1931 int pfrio_nadd;
1932 int pfrio_ndel;
1933 int pfrio_nchange;
1934 int pfrio_flags;
1935 u_int32_t pfrio_ticket;
1936 };
1937 #define pfrio_exists pfrio_nadd
1938 #define pfrio_nzero pfrio_nadd
1939 #define pfrio_nmatch pfrio_nadd
1940 #define pfrio_naddr pfrio_size2
1941 #define pfrio_setflag pfrio_size2
1942 #define pfrio_clrflag pfrio_nadd
1943
1944 #ifdef KERNEL
1945 struct pfioc_table_32 {
1946 struct pfr_table pfrio_table;
1947 user32_addr_t pfrio_buffer __attribute__((aligned(8)));
1948 int pfrio_esize __attribute__((aligned(8)));
1949 int pfrio_size;
1950 int pfrio_size2;
1951 int pfrio_nadd;
1952 int pfrio_ndel;
1953 int pfrio_nchange;
1954 int pfrio_flags;
1955 u_int32_t pfrio_ticket;
1956 };
1957
1958 struct pfioc_table_64 {
1959 struct pfr_table pfrio_table;
1960 user64_addr_t pfrio_buffer __attribute__((aligned(8)));
1961 int pfrio_esize __attribute__((aligned(8)));
1962 int pfrio_size;
1963 int pfrio_size2;
1964 int pfrio_nadd;
1965 int pfrio_ndel;
1966 int pfrio_nchange;
1967 int pfrio_flags;
1968 u_int32_t pfrio_ticket;
1969 };
1970 #endif /* KERNEL */
1971
1972 struct pfioc_iface {
1973 char pfiio_name[IFNAMSIZ];
1974 void *pfiio_buffer __attribute__((aligned(8)));
1975 int pfiio_esize __attribute__((aligned(8)));
1976 int pfiio_size;
1977 int pfiio_nzero;
1978 int pfiio_flags;
1979 };
1980
1981 #ifdef KERNEL
1982 struct pfioc_iface_32 {
1983 char pfiio_name[IFNAMSIZ];
1984 user32_addr_t pfiio_buffer __attribute__((aligned(8)));
1985 int pfiio_esize __attribute__((aligned(8)));
1986 int pfiio_size;
1987 int pfiio_nzero;
1988 int pfiio_flags;
1989 };
1990
1991 struct pfioc_iface_64 {
1992 char pfiio_name[IFNAMSIZ];
1993 user64_addr_t pfiio_buffer __attribute__((aligned(8)));
1994 int pfiio_esize __attribute__((aligned(8)));
1995 int pfiio_size;
1996 int pfiio_nzero;
1997 int pfiio_flags;
1998 };
1999 #endif /* KERNEL */
2000
2001 /*
2002 * ioctl operations
2003 */
2004
2005 #define DIOCSTART _IO ('D', 1)
2006 #define DIOCSTOP _IO ('D', 2)
2007 #define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule)
2008 #define DIOCGETSTARTERS _IOWR('D', 5, struct pfioc_tokens)
2009 #define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule)
2010 #define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule)
2011 #define DIOCSTARTREF _IOR ('D', 8, u_int64_t)
2012 #define DIOCSTOPREF _IOWR('D', 9, struct pfioc_remove_token)
2013 /* XXX cut 10 - 17 */
2014 #define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill)
2015 #define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state)
2016 #define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if)
2017 #define DIOCGETSTATUS _IOWR('D', 21, struct pf_status)
2018 #define DIOCCLRSTATUS _IO ('D', 22)
2019 #define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook)
2020 #define DIOCSETDEBUG _IOWR('D', 24, u_int32_t)
2021 #define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states)
2022 #define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule)
2023 /* XXX cut 26 - 28 */
2024 #define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm)
2025 #define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm)
2026 #define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state)
2027 #define DIOCCLRRULECTRS _IO ('D', 38)
2028 #define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit)
2029 #define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit)
2030 #define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill)
2031 #define DIOCSTARTALTQ _IO ('D', 42)
2032 #define DIOCSTOPALTQ _IO ('D', 43)
2033 #define DIOCADDALTQ _IOWR('D', 45, struct pfioc_altq)
2034 #define DIOCGETALTQS _IOWR('D', 47, struct pfioc_altq)
2035 #define DIOCGETALTQ _IOWR('D', 48, struct pfioc_altq)
2036 #define DIOCCHANGEALTQ _IOWR('D', 49, struct pfioc_altq)
2037 #define DIOCGETQSTATS _IOWR('D', 50, struct pfioc_qstats)
2038 #define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr)
2039 #define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr)
2040 #define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr)
2041 #define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr)
2042 #define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr)
2043 /* XXX cut 55 - 57 */
2044 #define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset)
2045 #define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset)
2046 #define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table)
2047 #define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table)
2048 #define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table)
2049 #define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table)
2050 #define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table)
2051 #define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table)
2052 #define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table)
2053 #define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table)
2054 #define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table)
2055 #define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table)
2056 #define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table)
2057 #define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table)
2058 #define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table)
2059 #define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table)
2060 #define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table)
2061 #define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table)
2062 #define DIOCOSFPFLUSH _IO('D', 78)
2063 #define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl)
2064 #define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl)
2065 #define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans)
2066 #define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans)
2067 #define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans)
2068 #define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes)
2069 #define DIOCCLRSRCNODES _IO('D', 85)
2070 #define DIOCSETHOSTID _IOWR('D', 86, u_int32_t)
2071 #define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface)
2072 #define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface)
2073 #define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface)
2074 #define DIOCKILLSRCNODES _IOWR('D', 91, struct pfioc_src_node_kill)
2075
2076 #ifdef KERNEL
2077 RB_HEAD(pf_src_tree, pf_src_node);
2078 RB_PROTOTYPE_SC(__private_extern__, pf_src_tree, pf_src_node, entry,
2079 pf_src_compare);
2080 __private_extern__ struct pf_src_tree tree_src_tracking;
2081
2082 RB_HEAD(pf_state_tree_id, pf_state);
2083 RB_PROTOTYPE_SC(__private_extern__, pf_state_tree_id, pf_state,
2084 entry_id, pf_state_compare_id);
2085 __private_extern__ struct pf_state_tree_id tree_id;
2086 __private_extern__ struct pf_state_queue state_list;
2087
2088 TAILQ_HEAD(pf_poolqueue, pf_pool);
2089 __private_extern__ struct pf_poolqueue pf_pools[2];
2090 __private_extern__ struct pf_palist pf_pabuf;
2091 __private_extern__ u_int32_t ticket_pabuf;
2092 #if ALTQ
2093 TAILQ_HEAD(pf_altqqueue, pf_altq);
2094 __private_extern__ struct pf_altqqueue pf_altqs[2];
2095 __private_extern__ u_int32_t ticket_altqs_active;
2096 __private_extern__ u_int32_t ticket_altqs_inactive;
2097 __private_extern__ int altqs_inactive_open;
2098 __private_extern__ struct pf_altqqueue *pf_altqs_active;
2099 __private_extern__ struct pf_altqqueue *pf_altqs_inactive;
2100 #endif /* ALTQ */
2101 __private_extern__ struct pf_poolqueue *pf_pools_active;
2102 __private_extern__ struct pf_poolqueue *pf_pools_inactive;
2103
2104 __private_extern__ int pf_tbladdr_setup(struct pf_ruleset *,
2105 struct pf_addr_wrap *);
2106 __private_extern__ void pf_tbladdr_remove(struct pf_addr_wrap *);
2107 __private_extern__ void pf_tbladdr_copyout(struct pf_addr_wrap *);
2108 __private_extern__ void pf_calc_skip_steps(struct pf_rulequeue *);
2109
2110 __private_extern__ struct pool pf_src_tree_pl, pf_rule_pl;
2111 __private_extern__ struct pool pf_state_pl, pf_state_key_pl, pf_pooladdr_pl;
2112 __private_extern__ struct pool pf_state_scrub_pl;
2113 #if ALTQ
2114 __private_extern__ struct pool pf_altq_pl;
2115 #endif /* ALTQ */
2116 #ifndef NO_APPLE_EXTENSIONS
2117 __private_extern__ struct pool pf_app_state_pl;
2118 #endif /* !NO_APPLE_EXTENSIONS */
2119
2120 __private_extern__ struct thread *pf_purge_thread;
2121
2122 __private_extern__ void pfinit(void);
2123 __private_extern__ void pf_purge_thread_fn(void *, wait_result_t);
2124 __private_extern__ void pf_purge_expired_src_nodes(void);
2125 __private_extern__ void pf_purge_expired_states(u_int32_t);
2126 __private_extern__ void pf_unlink_state(struct pf_state *);
2127 __private_extern__ void pf_free_state(struct pf_state *);
2128 __private_extern__ int pf_insert_state(struct pfi_kif *, struct pf_state *);
2129 __private_extern__ int pf_insert_src_node(struct pf_src_node **,
2130 struct pf_rule *, struct pf_addr *, sa_family_t);
2131 __private_extern__ void pf_src_tree_remove_state(struct pf_state *);
2132 __private_extern__ struct pf_state *pf_find_state_byid(struct pf_state_cmp *);
2133 __private_extern__ struct pf_state *pf_find_state_all(struct pf_state_key_cmp *,
2134 u_int, int *);
2135 __private_extern__ void pf_print_state(struct pf_state *);
2136 __private_extern__ void pf_print_flags(u_int8_t);
2137 __private_extern__ u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t,
2138 u_int8_t);
2139
2140 __private_extern__ struct ifnet *sync_ifp;
2141 __private_extern__ struct pf_rule pf_default_rule;
2142 __private_extern__ void pf_addrcpy(struct pf_addr *, struct pf_addr *,
2143 u_int8_t);
2144 __private_extern__ void pf_rm_rule(struct pf_rulequeue *, struct pf_rule *);
2145
2146 #if INET
2147 __private_extern__ int pf_test(int, struct ifnet *, struct mbuf **,
2148 struct ether_header *);
2149 #endif /* INET */
2150
2151 #if INET6
2152 __private_extern__ int pf_test6(int, struct ifnet *, struct mbuf **,
2153 struct ether_header *);
2154 __private_extern__ void pf_poolmask(struct pf_addr *, struct pf_addr *,
2155 struct pf_addr *, struct pf_addr *, u_int8_t);
2156 __private_extern__ void pf_addr_inc(struct pf_addr *, sa_family_t);
2157 #endif /* INET6 */
2158
2159 #ifndef NO_APPLE_EXTENSIONS
2160 __private_extern__ struct mbuf *pf_lazy_makewritable(struct pf_pdesc *,
2161 struct mbuf *, int);
2162 #endif /* !NO_APPLE_EXTENSIONS */
2163 __private_extern__ void *pf_pull_hdr(struct mbuf *, int, void *, int,
2164 u_short *, u_short *, sa_family_t);
2165 __private_extern__ void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t);
2166 __private_extern__ int pflog_packet(struct pfi_kif *, struct mbuf *,
2167 sa_family_t, u_int8_t, u_int8_t, struct pf_rule *, struct pf_rule *,
2168 struct pf_ruleset *, struct pf_pdesc *);
2169 __private_extern__ int pf_match_addr(u_int8_t, struct pf_addr *,
2170 struct pf_addr *, struct pf_addr *, sa_family_t);
2171 __private_extern__ int pf_match_addr_range(struct pf_addr *, struct pf_addr *,
2172 struct pf_addr *, sa_family_t);
2173 __private_extern__ int pf_match(u_int8_t, u_int32_t, u_int32_t, u_int32_t);
2174 __private_extern__ int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t);
2175 #ifndef NO_APPLE_EXTENSIONS
2176 __private_extern__ int pf_match_xport(u_int8_t, u_int8_t, union pf_rule_xport *,
2177 union pf_state_xport *);
2178 #endif /* !NO_APPLE_EXTENSIONS */
2179 __private_extern__ int pf_match_uid(u_int8_t, uid_t, uid_t, uid_t);
2180 __private_extern__ int pf_match_gid(u_int8_t, gid_t, gid_t, gid_t);
2181
2182 __private_extern__ void pf_normalize_init(void);
2183 __private_extern__ int pf_normalize_isempty(void);
2184 __private_extern__ int pf_normalize_ip(struct mbuf **, int, struct pfi_kif *,
2185 u_short *, struct pf_pdesc *);
2186 __private_extern__ int pf_normalize_ip6(struct mbuf **, int, struct pfi_kif *,
2187 u_short *, struct pf_pdesc *);
2188 __private_extern__ int pf_normalize_tcp(int, struct pfi_kif *, struct mbuf *,
2189 int, int, void *, struct pf_pdesc *);
2190 __private_extern__ void pf_normalize_tcp_cleanup(struct pf_state *);
2191 __private_extern__ int pf_normalize_tcp_init(struct mbuf *, int,
2192 struct pf_pdesc *, struct tcphdr *, struct pf_state_peer *,
2193 struct pf_state_peer *);
2194 __private_extern__ int pf_normalize_tcp_stateful(struct mbuf *, int,
2195 struct pf_pdesc *, u_short *, struct tcphdr *, struct pf_state *,
2196 struct pf_state_peer *, struct pf_state_peer *, int *);
2197 __private_extern__ u_int64_t pf_state_expires(const struct pf_state *);
2198 __private_extern__ void pf_purge_expired_fragments(void);
2199 __private_extern__ int pf_routable(struct pf_addr *addr, sa_family_t af,
2200 struct pfi_kif *);
2201 __private_extern__ int pf_rtlabel_match(struct pf_addr *, sa_family_t,
2202 struct pf_addr_wrap *);
2203 __private_extern__ int pf_socket_lookup(int, struct pf_pdesc *);
2204 __private_extern__ struct pf_state_key *pf_alloc_state_key(struct pf_state *);
2205 __private_extern__ void pfr_initialize(void);
2206 __private_extern__ int pfr_match_addr(struct pfr_ktable *, struct pf_addr *,
2207 sa_family_t);
2208 __private_extern__ void pfr_update_stats(struct pfr_ktable *, struct pf_addr *,
2209 sa_family_t, u_int64_t, int, int, int);
2210 __private_extern__ int pfr_pool_get(struct pfr_ktable *, int *,
2211 struct pf_addr *, struct pf_addr **, struct pf_addr **, sa_family_t);
2212 __private_extern__ void pfr_dynaddr_update(struct pfr_ktable *,
2213 struct pfi_dynaddr *);
2214 __private_extern__ void pfr_table_copyin_cleanup(struct pfr_table *);
2215 __private_extern__ struct pfr_ktable *pfr_attach_table(struct pf_ruleset *,
2216 char *);
2217 __private_extern__ void pfr_detach_table(struct pfr_ktable *);
2218 __private_extern__ int pfr_clr_tables(struct pfr_table *, int *, int);
2219 __private_extern__ int pfr_add_tables(user_addr_t, int, int *, int);
2220 __private_extern__ int pfr_del_tables(user_addr_t, int, int *, int);
2221 __private_extern__ int pfr_get_tables(struct pfr_table *, user_addr_t,
2222 int *, int);
2223 __private_extern__ int pfr_get_tstats(struct pfr_table *, user_addr_t,
2224 int *, int);
2225 __private_extern__ int pfr_clr_tstats(user_addr_t, int, int *, int);
2226 __private_extern__ int pfr_set_tflags(user_addr_t, int, int, int, int *,
2227 int *, int);
2228 __private_extern__ int pfr_clr_addrs(struct pfr_table *, int *, int);
2229 __private_extern__ int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *,
2230 u_int64_t);
2231 __private_extern__ int pfr_add_addrs(struct pfr_table *, user_addr_t,
2232 int, int *, int);
2233 __private_extern__ int pfr_del_addrs(struct pfr_table *, user_addr_t,
2234 int, int *, int);
2235 __private_extern__ int pfr_set_addrs(struct pfr_table *, user_addr_t,
2236 int, int *, int *, int *, int *, int, u_int32_t);
2237 __private_extern__ int pfr_get_addrs(struct pfr_table *, user_addr_t,
2238 int *, int);
2239 __private_extern__ int pfr_get_astats(struct pfr_table *, user_addr_t,
2240 int *, int);
2241 __private_extern__ int pfr_clr_astats(struct pfr_table *, user_addr_t,
2242 int, int *, int);
2243 __private_extern__ int pfr_tst_addrs(struct pfr_table *, user_addr_t,
2244 int, int *, int);
2245 __private_extern__ int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *,
2246 int);
2247 __private_extern__ int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *,
2248 int);
2249 __private_extern__ int pfr_ina_commit(struct pfr_table *, u_int32_t, int *,
2250 int *, int);
2251 __private_extern__ int pfr_ina_define(struct pfr_table *, user_addr_t,
2252 int, int *, int *, u_int32_t, int);
2253
2254 __private_extern__ struct pfi_kif *pfi_all;
2255
2256 __private_extern__ void pfi_initialize(void);
2257 __private_extern__ struct pfi_kif *pfi_kif_get(const char *);
2258 __private_extern__ void pfi_kif_ref(struct pfi_kif *, enum pfi_kif_refs);
2259 __private_extern__ void pfi_kif_unref(struct pfi_kif *, enum pfi_kif_refs);
2260 __private_extern__ int pfi_kif_match(struct pfi_kif *, struct pfi_kif *);
2261 __private_extern__ void pfi_attach_ifnet(struct ifnet *);
2262 __private_extern__ void pfi_detach_ifnet(struct ifnet *);
2263 __private_extern__ int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *,
2264 sa_family_t);
2265 __private_extern__ int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t);
2266 __private_extern__ void pfi_dynaddr_remove(struct pf_addr_wrap *);
2267 __private_extern__ void pfi_dynaddr_copyout(struct pf_addr_wrap *);
2268 __private_extern__ void pfi_update_status(const char *, struct pf_status *);
2269 __private_extern__ int pfi_get_ifaces(const char *, user_addr_t, int *);
2270 __private_extern__ int pfi_set_flags(const char *, int);
2271 __private_extern__ int pfi_clear_flags(const char *, int);
2272
2273 __private_extern__ u_int16_t pf_tagname2tag(char *);
2274 __private_extern__ void pf_tag2tagname(u_int16_t, char *);
2275 __private_extern__ void pf_tag_ref(u_int16_t);
2276 __private_extern__ void pf_tag_unref(u_int16_t);
2277 __private_extern__ int pf_tag_packet(struct mbuf *, struct pf_mtag *,
2278 int, unsigned int);
2279 __private_extern__ u_int32_t pf_qname2qid(char *);
2280 __private_extern__ void pf_qid2qname(u_int32_t, char *);
2281 __private_extern__ void pf_qid_unref(u_int32_t);
2282
2283 __private_extern__ struct pf_status pf_status;
2284 __private_extern__ struct pool pf_frent_pl, pf_frag_pl;
2285
2286 struct pf_pool_limit {
2287 void *pp;
2288 unsigned limit;
2289 };
2290 __private_extern__ struct pf_pool_limit pf_pool_limits[PF_LIMIT_MAX];
2291
2292 __private_extern__ int pf_af_hook(struct ifnet *, struct mbuf **,
2293 struct mbuf **, unsigned int, int);
2294 __private_extern__ int pf_ifaddr_hook(struct ifnet *, unsigned long);
2295 __private_extern__ void pf_ifnet_hook(struct ifnet *, int);
2296
2297 /*
2298 * The following are defined with "private extern" storage class for
2299 * kernel, and "extern" for user-space.
2300 */
2301 __private_extern__ struct pf_anchor_global pf_anchors;
2302 __private_extern__ struct pf_anchor pf_main_anchor;
2303 #define pf_main_ruleset pf_main_anchor.ruleset
2304
2305 __private_extern__ int pf_is_enabled;
2306 #define PF_IS_ENABLED (pf_is_enabled != 0)
2307
2308 /* these ruleset functions can be linked into userland programs (pfctl) */
2309 __private_extern__ int pf_get_ruleset_number(u_int8_t);
2310 __private_extern__ void pf_init_ruleset(struct pf_ruleset *);
2311 __private_extern__ int pf_anchor_setup(struct pf_rule *,
2312 const struct pf_ruleset *, const char *);
2313 __private_extern__ int pf_anchor_copyout(const struct pf_ruleset *,
2314 const struct pf_rule *, struct pfioc_rule *);
2315 __private_extern__ void pf_anchor_remove(struct pf_rule *);
2316 __private_extern__ void pf_remove_if_empty_ruleset(struct pf_ruleset *);
2317 __private_extern__ struct pf_anchor *pf_find_anchor(const char *);
2318 __private_extern__ struct pf_ruleset *pf_find_ruleset(const char *);
2319 __private_extern__ struct pf_ruleset *pf_find_or_create_ruleset(const char *);
2320 __private_extern__ void pf_rs_initialize(void);
2321
2322 __private_extern__ int pf_osfp_add(struct pf_osfp_ioctl *);
2323 __private_extern__ struct pf_osfp_enlist *pf_osfp_fingerprint(struct pf_pdesc *,
2324 struct mbuf *, int, const struct tcphdr *);
2325 __private_extern__ struct pf_osfp_enlist *pf_osfp_fingerprint_hdr(
2326 const struct ip *, const struct ip6_hdr *, const struct tcphdr *);
2327 __private_extern__ void pf_osfp_flush(void);
2328 __private_extern__ int pf_osfp_get(struct pf_osfp_ioctl *);
2329 __private_extern__ void pf_osfp_initialize(void);
2330 __private_extern__ int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t);
2331 __private_extern__ struct pf_os_fingerprint *pf_osfp_validate(void);
2332 #else /* !KERNEL */
2333 extern struct pf_anchor_global pf_anchors;
2334 extern struct pf_anchor pf_main_anchor;
2335 #define pf_main_ruleset pf_main_anchor.ruleset
2336
2337 /* these ruleset functions can be linked into userland programs (pfctl) */
2338 extern int pf_get_ruleset_number(u_int8_t);
2339 extern void pf_init_ruleset(struct pf_ruleset *);
2340 extern int pf_anchor_setup(struct pf_rule *, const struct pf_ruleset *,
2341 const char *);
2342 extern int pf_anchor_copyout(const struct pf_ruleset *, const struct pf_rule *,
2343 struct pfioc_rule *);
2344 extern void pf_anchor_remove(struct pf_rule *);
2345 extern void pf_remove_if_empty_ruleset(struct pf_ruleset *);
2346 extern struct pf_anchor *pf_find_anchor(const char *);
2347 extern struct pf_ruleset *pf_find_ruleset(const char *);
2348 extern struct pf_ruleset *pf_find_or_create_ruleset(const char *);
2349 extern void pf_rs_initialize(void);
2350 #endif /* !KERNEL */
2351
2352 #ifdef __cplusplus
2353 }
2354 #endif
2355 #endif /* PF || !KERNEL */
2356 #endif /* PRIVATE */
2357 #endif /* _NET_PFVAR_H_ */
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