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1 /*
2 * Copyright (c) 2007-2013 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 <stdbool.h>
78 #include <sys/param.h>
79 #include <sys/types.h>
80 #include <sys/queue.h>
81 #include <libkern/tree.h>
82
83 #include <net/radix.h>
84 #include <netinet/in.h>
85
86 #ifdef KERNEL
87 #include <kern/kern_types.h>
88 #include <kern/zalloc.h>
89 #include <kern/lock.h>
90
91 #include <machine/endian.h>
92 #include <sys/systm.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 extern lck_rw_t *pf_perim_lock;
103 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 struct pf_grev1_hdr;
150 struct pf_esp_hdr;
151 #endif /* KERNEL */
152
153 #define PF_GRE_PPTP_VARIANT 0x01
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 PF_DUMMYNET, PF_NODUMMYNET };
159 enum { PF_RULESET_SCRUB, PF_RULESET_FILTER, PF_RULESET_NAT,
160 PF_RULESET_BINAT, PF_RULESET_RDR, PF_RULESET_DUMMYNET,
161 PF_RULESET_MAX };
162 enum { PF_OP_NONE, PF_OP_IRG, PF_OP_EQ, PF_OP_NE, PF_OP_LT,
163 PF_OP_LE, PF_OP_GT, PF_OP_GE, PF_OP_XRG, PF_OP_RRG };
164 enum { PF_DEBUG_NONE, PF_DEBUG_URGENT, PF_DEBUG_MISC, PF_DEBUG_NOISY };
165 enum { PF_CHANGE_NONE, PF_CHANGE_ADD_HEAD, PF_CHANGE_ADD_TAIL,
166 PF_CHANGE_ADD_BEFORE, PF_CHANGE_ADD_AFTER,
167 PF_CHANGE_REMOVE, PF_CHANGE_GET_TICKET };
168 enum { PF_GET_NONE, PF_GET_CLR_CNTR };
169
170 /*
171 * Note about PFTM_*: real indices into pf_rule.timeout[] come before
172 * PFTM_MAX, special cases afterwards. See pf_state_expires().
173 */
174 enum { PFTM_TCP_FIRST_PACKET, PFTM_TCP_OPENING, PFTM_TCP_ESTABLISHED,
175 PFTM_TCP_CLOSING, PFTM_TCP_FIN_WAIT, PFTM_TCP_CLOSED,
176 PFTM_UDP_FIRST_PACKET, PFTM_UDP_SINGLE, PFTM_UDP_MULTIPLE,
177 PFTM_ICMP_FIRST_PACKET, PFTM_ICMP_ERROR_REPLY,
178 PFTM_GREv1_FIRST_PACKET, PFTM_GREv1_INITIATING,
179 PFTM_GREv1_ESTABLISHED, PFTM_ESP_FIRST_PACKET, PFTM_ESP_INITIATING,
180 PFTM_ESP_ESTABLISHED, 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 #define PFTM_GREv1_FIRST_PACKET_VAL 120
199 #define PFTM_GREv1_INITIATING_VAL 30
200 #define PFTM_GREv1_ESTABLISHED_VAL 1800
201 #define PFTM_ESP_FIRST_PACKET_VAL 120
202 #define PFTM_ESP_INITIATING_VAL 30
203 #define PFTM_ESP_ESTABLISHED_VAL 900
204 #define PFTM_OTHER_FIRST_PACKET_VAL 60 /* First packet */
205 #define PFTM_OTHER_SINGLE_VAL 30 /* Unidirectional */
206 #define PFTM_OTHER_MULTIPLE_VAL 60 /* Bidirectional */
207 #define PFTM_FRAG_VAL 30 /* Fragment expire */
208 #define PFTM_INTERVAL_VAL 10 /* Expire interval */
209 #define PFTM_SRC_NODE_VAL 0 /* Source tracking */
210 #define PFTM_TS_DIFF_VAL 30 /* Allowed TS diff */
211
212 enum { PF_NOPFROUTE, PF_FASTROUTE, PF_ROUTETO, PF_DUPTO, PF_REPLYTO };
213 enum { PF_LIMIT_STATES,
214 PF_LIMIT_APP_STATES,
215 PF_LIMIT_SRC_NODES, PF_LIMIT_FRAGS,
216 PF_LIMIT_TABLES, PF_LIMIT_TABLE_ENTRIES, PF_LIMIT_MAX };
217 #define PF_POOL_IDMASK 0x0f
218 enum { PF_POOL_NONE, PF_POOL_BITMASK, PF_POOL_RANDOM,
219 PF_POOL_SRCHASH, PF_POOL_ROUNDROBIN };
220 enum { PF_ADDR_ADDRMASK, PF_ADDR_NOROUTE, PF_ADDR_DYNIFTL,
221 PF_ADDR_TABLE, PF_ADDR_RTLABEL, PF_ADDR_URPFFAILED,
222 PF_ADDR_RANGE };
223 #define PF_POOL_TYPEMASK 0x0f
224 #define PF_POOL_STICKYADDR 0x20
225 #define PF_WSCALE_FLAG 0x80
226 #define PF_WSCALE_MASK 0x0f
227
228 #define PF_LOG 0x01
229 #define PF_LOG_ALL 0x02
230 #define PF_LOG_SOCKET_LOOKUP 0x04
231
232 struct pf_addr {
233 union {
234 struct in_addr v4;
235 struct in6_addr v6;
236 u_int8_t addr8[16];
237 u_int16_t addr16[8];
238 u_int32_t addr32[4];
239 } pfa; /* 128-bit address */
240 #define v4 pfa.v4
241 #define v6 pfa.v6
242 #define addr8 pfa.addr8
243 #define addr16 pfa.addr16
244 #define addr32 pfa.addr32
245 };
246
247 #define PF_TABLE_NAME_SIZE 32
248
249 #define PFI_AFLAG_NETWORK 0x01
250 #define PFI_AFLAG_BROADCAST 0x02
251 #define PFI_AFLAG_PEER 0x04
252 #define PFI_AFLAG_MODEMASK 0x07
253 #define PFI_AFLAG_NOALIAS 0x08
254
255 #ifndef RTLABEL_LEN
256 #define RTLABEL_LEN 32
257 #endif
258
259 struct pf_addr_wrap {
260 union {
261 struct {
262 struct pf_addr addr;
263 struct pf_addr mask;
264 } a;
265 char ifname[IFNAMSIZ];
266 char tblname[PF_TABLE_NAME_SIZE];
267 char rtlabelname[RTLABEL_LEN];
268 u_int32_t rtlabel;
269 } v;
270 union {
271 #ifdef KERNEL
272 struct pfi_dynaddr *dyn __attribute__((aligned(8)));
273 struct pfr_ktable *tbl __attribute__((aligned(8)));
274 #else /* !KERNEL */
275 void *dyn __attribute__((aligned(8)));
276 void *tbl __attribute__((aligned(8)));
277 #endif /* !KERNEL */
278 int dyncnt __attribute__((aligned(8)));
279 int tblcnt __attribute__((aligned(8)));
280 } p __attribute__((aligned(8)));
281 u_int8_t type; /* PF_ADDR_* */
282 u_int8_t iflags; /* PFI_AFLAG_* */
283 };
284
285 struct pf_port_range {
286 u_int16_t port[2];
287 u_int8_t op;
288 };
289
290 union pf_rule_xport {
291 struct pf_port_range range;
292 u_int16_t call_id;
293 u_int32_t spi;
294 };
295
296 #ifdef KERNEL
297 struct pfi_dynaddr {
298 TAILQ_ENTRY(pfi_dynaddr) entry;
299 struct pf_addr pfid_addr4;
300 struct pf_addr pfid_mask4;
301 struct pf_addr pfid_addr6;
302 struct pf_addr pfid_mask6;
303 struct pfr_ktable *pfid_kt;
304 struct pfi_kif *pfid_kif;
305 void *pfid_hook_cookie;
306 int pfid_net; /* mask or 128 */
307 int pfid_acnt4; /* address count IPv4 */
308 int pfid_acnt6; /* address count IPv6 */
309 sa_family_t pfid_af; /* rule af */
310 u_int8_t pfid_iflags; /* PFI_AFLAG_* */
311 };
312
313 /*
314 * Address manipulation macros
315 */
316
317 #if INET
318 #if !INET6
319 #define PF_INET_ONLY
320 #endif /* ! INET6 */
321 #endif /* INET */
322
323 #if INET6
324 #if !INET
325 #define PF_INET6_ONLY
326 #endif /* ! INET */
327 #endif /* INET6 */
328
329 #if INET
330 #if INET6
331 #define PF_INET_INET6
332 #endif /* INET6 */
333 #endif /* INET */
334
335 #else /* !KERNEL */
336
337 #define PF_INET_INET6
338
339 #endif /* !KERNEL */
340
341 /* Both IPv4 and IPv6 */
342 #ifdef PF_INET_INET6
343
344 #define PF_AEQ(a, b, c) \
345 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \
346 ((a)->addr32[3] == (b)->addr32[3] && \
347 (a)->addr32[2] == (b)->addr32[2] && \
348 (a)->addr32[1] == (b)->addr32[1] && \
349 (a)->addr32[0] == (b)->addr32[0])) \
350
351 #define PF_ANEQ(a, b, c) \
352 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \
353 ((a)->addr32[3] != (b)->addr32[3] || \
354 (a)->addr32[2] != (b)->addr32[2] || \
355 (a)->addr32[1] != (b)->addr32[1] || \
356 (a)->addr32[0] != (b)->addr32[0])) \
357
358 #define PF_ALEQ(a, b, c) \
359 ((c == AF_INET && (a)->addr32[0] <= (b)->addr32[0]) || \
360 ((a)->addr32[3] <= (b)->addr32[3] && \
361 (a)->addr32[2] <= (b)->addr32[2] && \
362 (a)->addr32[1] <= (b)->addr32[1] && \
363 (a)->addr32[0] <= (b)->addr32[0])) \
364
365 #define PF_AZERO(a, c) \
366 ((c == AF_INET && !(a)->addr32[0]) || \
367 (!(a)->addr32[0] && !(a)->addr32[1] && \
368 !(a)->addr32[2] && !(a)->addr32[3])) \
369
370 #define PF_MATCHA(n, a, m, b, f) \
371 pf_match_addr(n, a, m, b, f)
372
373 #define PF_ACPY(a, b, f) \
374 pf_addrcpy(a, b, f)
375
376 #define PF_AINC(a, f) \
377 pf_addr_inc(a, f)
378
379 #define PF_POOLMASK(a, b, c, d, f) \
380 pf_poolmask(a, b, c, d, f)
381
382 #else
383
384 /* Just IPv6 */
385
386 #ifdef PF_INET6_ONLY
387
388 #define PF_AEQ(a, b, c) \
389 ((a)->addr32[3] == (b)->addr32[3] && \
390 (a)->addr32[2] == (b)->addr32[2] && \
391 (a)->addr32[1] == (b)->addr32[1] && \
392 (a)->addr32[0] == (b)->addr32[0]) \
393
394 #define PF_ANEQ(a, b, c) \
395 ((a)->addr32[3] != (b)->addr32[3] || \
396 (a)->addr32[2] != (b)->addr32[2] || \
397 (a)->addr32[1] != (b)->addr32[1] || \
398 (a)->addr32[0] != (b)->addr32[0]) \
399
400 #define PF_ALEQ(a, b, c) \
401 ((a)->addr32[3] <= (b)->addr32[3] && \
402 (a)->addr32[2] <= (b)->addr32[2] && \
403 (a)->addr32[1] <= (b)->addr32[1] && \
404 (a)->addr32[0] <= (b)->addr32[0]) \
405
406 #define PF_AZERO(a, c) \
407 (!(a)->addr32[0] && \
408 !(a)->addr32[1] && \
409 !(a)->addr32[2] && \
410 !(a)->addr32[3]) \
411
412 #define PF_MATCHA(n, a, m, b, f) \
413 pf_match_addr(n, a, m, b, f)
414
415 #define PF_ACPY(a, b, f) \
416 pf_addrcpy(a, b, f)
417
418 #define PF_AINC(a, f) \
419 pf_addr_inc(a, f)
420
421 #define PF_POOLMASK(a, b, c, d, f) \
422 pf_poolmask(a, b, c, d, f)
423
424 #else
425
426 /* Just IPv4 */
427 #ifdef PF_INET_ONLY
428
429 #define PF_AEQ(a, b, c) \
430 ((a)->addr32[0] == (b)->addr32[0])
431
432 #define PF_ANEQ(a, b, c) \
433 ((a)->addr32[0] != (b)->addr32[0])
434
435 #define PF_ALEQ(a, b, c) \
436 ((a)->addr32[0] <= (b)->addr32[0])
437
438 #define PF_AZERO(a, c) \
439 (!(a)->addr32[0])
440
441 #define PF_MATCHA(n, a, m, b, f) \
442 pf_match_addr(n, a, m, b, f)
443
444 #define PF_ACPY(a, b, f) \
445 (a)->v4.s_addr = (b)->v4.s_addr
446
447 #define PF_AINC(a, f) \
448 do { \
449 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \
450 } while (0)
451
452 #define PF_POOLMASK(a, b, c, d, f) \
453 do { \
454 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \
455 (((c)->addr32[0] ^ 0xffffffff) & (d)->addr32[0]); \
456 } while (0)
457
458 #endif /* PF_INET_ONLY */
459 #endif /* PF_INET6_ONLY */
460 #endif /* PF_INET_INET6 */
461
462 #ifdef KERNEL
463 #define PF_MISMATCHAW(aw, x, af, neg, ifp) \
464 ( \
465 (((aw)->type == PF_ADDR_NOROUTE && \
466 pf_routable((x), (af), NULL)) || \
467 (((aw)->type == PF_ADDR_URPFFAILED && (ifp) != NULL && \
468 pf_routable((x), (af), (ifp))) || \
469 ((aw)->type == PF_ADDR_RTLABEL && \
470 !pf_rtlabel_match((x), (af), (aw))) || \
471 ((aw)->type == PF_ADDR_TABLE && \
472 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \
473 ((aw)->type == PF_ADDR_DYNIFTL && \
474 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \
475 ((aw)->type == PF_ADDR_RANGE && \
476 !pf_match_addr_range(&(aw)->v.a.addr, \
477 &(aw)->v.a.mask, (x), (af))) || \
478 ((aw)->type == PF_ADDR_ADDRMASK && \
479 !PF_AZERO(&(aw)->v.a.mask, (af)) && \
480 !PF_MATCHA(0, &(aw)->v.a.addr, \
481 &(aw)->v.a.mask, (x), (af))))) != \
482 (neg) \
483 )
484 #endif /* KERNEL */
485
486 struct pf_rule_uid {
487 uid_t uid[2];
488 u_int8_t op;
489 u_int8_t _pad[3];
490 };
491
492 struct pf_rule_gid {
493 uid_t gid[2];
494 u_int8_t op;
495 u_int8_t _pad[3];
496 };
497
498 struct pf_rule_addr {
499 struct pf_addr_wrap addr;
500 union pf_rule_xport xport;
501 u_int8_t neg;
502 };
503
504 struct pf_pooladdr {
505 struct pf_addr_wrap addr;
506 TAILQ_ENTRY(pf_pooladdr) entries;
507 #if !defined(__LP64__)
508 u_int32_t _pad[2];
509 #endif /* !__LP64__ */
510 char ifname[IFNAMSIZ];
511 #ifdef KERNEL
512 struct pfi_kif *kif __attribute__((aligned(8)));
513 #else /* !KERNEL */
514 void *kif __attribute__((aligned(8)));
515 #endif /* !KERNEL */
516 };
517
518 TAILQ_HEAD(pf_palist, pf_pooladdr);
519
520 struct pf_poolhashkey {
521 union {
522 u_int8_t key8[16];
523 u_int16_t key16[8];
524 u_int32_t key32[4];
525 } pfk; /* 128-bit hash key */
526 #define key8 pfk.key8
527 #define key16 pfk.key16
528 #define key32 pfk.key32
529 };
530
531 struct pf_pool {
532 struct pf_palist list;
533 #if !defined(__LP64__)
534 u_int32_t _pad[2];
535 #endif /* !__LP64__ */
536 #ifdef KERNEL
537 struct pf_pooladdr *cur __attribute__((aligned(8)));
538 #else /* !KERNEL */
539 void *cur __attribute__((aligned(8)));
540 #endif /* !KERNEL */
541 struct pf_poolhashkey key __attribute__((aligned(8)));
542 struct pf_addr counter;
543 int tblidx;
544 u_int16_t proxy_port[2];
545 u_int8_t port_op;
546 u_int8_t opts;
547 };
548
549
550 /* A packed Operating System description for fingerprinting */
551 typedef u_int32_t pf_osfp_t;
552 #define PF_OSFP_ANY ((pf_osfp_t)0)
553 #define PF_OSFP_UNKNOWN ((pf_osfp_t)-1)
554 #define PF_OSFP_NOMATCH ((pf_osfp_t)-2)
555
556 struct pf_osfp_entry {
557 SLIST_ENTRY(pf_osfp_entry) fp_entry;
558 #if !defined(__LP64__)
559 u_int32_t _pad;
560 #endif /* !__LP64__ */
561 pf_osfp_t fp_os;
562 int fp_enflags;
563 #define PF_OSFP_EXPANDED 0x001 /* expanded entry */
564 #define PF_OSFP_GENERIC 0x002 /* generic signature */
565 #define PF_OSFP_NODETAIL 0x004 /* no p0f details */
566 #define PF_OSFP_LEN 32
567 char fp_class_nm[PF_OSFP_LEN];
568 char fp_version_nm[PF_OSFP_LEN];
569 char fp_subtype_nm[PF_OSFP_LEN];
570 };
571 #define PF_OSFP_ENTRY_EQ(a, b) \
572 ((a)->fp_os == (b)->fp_os && \
573 memcmp((a)->fp_class_nm, (b)->fp_class_nm, PF_OSFP_LEN) == 0 && \
574 memcmp((a)->fp_version_nm, (b)->fp_version_nm, PF_OSFP_LEN) == 0 && \
575 memcmp((a)->fp_subtype_nm, (b)->fp_subtype_nm, PF_OSFP_LEN) == 0)
576
577 /* handle pf_osfp_t packing */
578 #define _FP_RESERVED_BIT 1 /* For the special negative #defines */
579 #define _FP_UNUSED_BITS 1
580 #define _FP_CLASS_BITS 10 /* OS Class (Windows, Linux) */
581 #define _FP_VERSION_BITS 10 /* OS version (95, 98, NT, 2.4.54, 3.2) */
582 #define _FP_SUBTYPE_BITS 10 /* patch level (NT SP4, SP3, ECN patch) */
583 #define PF_OSFP_UNPACK(osfp, class, version, subtype) do { \
584 (class) = ((osfp) >> (_FP_VERSION_BITS+_FP_SUBTYPE_BITS)) & \
585 ((1 << _FP_CLASS_BITS) - 1); \
586 (version) = ((osfp) >> _FP_SUBTYPE_BITS) & \
587 ((1 << _FP_VERSION_BITS) - 1);\
588 (subtype) = (osfp) & ((1 << _FP_SUBTYPE_BITS) - 1); \
589 } while (0)
590 #define PF_OSFP_PACK(osfp, class, version, subtype) do { \
591 (osfp) = ((class) & ((1 << _FP_CLASS_BITS) - 1)) << (_FP_VERSION_BITS \
592 + _FP_SUBTYPE_BITS); \
593 (osfp) |= ((version) & ((1 << _FP_VERSION_BITS) - 1)) << \
594 _FP_SUBTYPE_BITS; \
595 (osfp) |= (subtype) & ((1 << _FP_SUBTYPE_BITS) - 1); \
596 } while (0)
597
598 /* the fingerprint of an OSes TCP SYN packet */
599 typedef u_int64_t pf_tcpopts_t;
600 struct pf_os_fingerprint {
601 SLIST_HEAD(pf_osfp_enlist, pf_osfp_entry) fp_oses; /* list of matches */
602 pf_tcpopts_t fp_tcpopts; /* packed TCP options */
603 u_int16_t fp_wsize; /* TCP window size */
604 u_int16_t fp_psize; /* ip->ip_len */
605 u_int16_t fp_mss; /* TCP MSS */
606 u_int16_t fp_flags;
607 #define PF_OSFP_WSIZE_MOD 0x0001 /* Window modulus */
608 #define PF_OSFP_WSIZE_DC 0x0002 /* Window don't care */
609 #define PF_OSFP_WSIZE_MSS 0x0004 /* Window multiple of MSS */
610 #define PF_OSFP_WSIZE_MTU 0x0008 /* Window multiple of MTU */
611 #define PF_OSFP_PSIZE_MOD 0x0010 /* packet size modulus */
612 #define PF_OSFP_PSIZE_DC 0x0020 /* packet size don't care */
613 #define PF_OSFP_WSCALE 0x0040 /* TCP window scaling */
614 #define PF_OSFP_WSCALE_MOD 0x0080 /* TCP window scale modulus */
615 #define PF_OSFP_WSCALE_DC 0x0100 /* TCP window scale dont-care */
616 #define PF_OSFP_MSS 0x0200 /* TCP MSS */
617 #define PF_OSFP_MSS_MOD 0x0400 /* TCP MSS modulus */
618 #define PF_OSFP_MSS_DC 0x0800 /* TCP MSS dont-care */
619 #define PF_OSFP_DF 0x1000 /* IPv4 don't fragment bit */
620 #define PF_OSFP_TS0 0x2000 /* Zero timestamp */
621 #define PF_OSFP_INET6 0x4000 /* IPv6 */
622 u_int8_t fp_optcnt; /* TCP option count */
623 u_int8_t fp_wscale; /* TCP window scaling */
624 u_int8_t fp_ttl; /* IPv4 TTL */
625 #define PF_OSFP_MAXTTL_OFFSET 40
626 /* TCP options packing */
627 #define PF_OSFP_TCPOPT_NOP 0x0 /* TCP NOP option */
628 #define PF_OSFP_TCPOPT_WSCALE 0x1 /* TCP window scaling option */
629 #define PF_OSFP_TCPOPT_MSS 0x2 /* TCP max segment size opt */
630 #define PF_OSFP_TCPOPT_SACK 0x3 /* TCP SACK OK option */
631 #define PF_OSFP_TCPOPT_TS 0x4 /* TCP timestamp option */
632 #define PF_OSFP_TCPOPT_BITS 3 /* bits used by each option */
633 #define PF_OSFP_MAX_OPTS \
634 (sizeof(((struct pf_os_fingerprint *)0)->fp_tcpopts) * 8) \
635 / PF_OSFP_TCPOPT_BITS
636
637 SLIST_ENTRY(pf_os_fingerprint) fp_next;
638 };
639
640 struct pf_osfp_ioctl {
641 struct pf_osfp_entry fp_os;
642 pf_tcpopts_t fp_tcpopts; /* packed TCP options */
643 u_int16_t fp_wsize; /* TCP window size */
644 u_int16_t fp_psize; /* ip->ip_len */
645 u_int16_t fp_mss; /* TCP MSS */
646 u_int16_t fp_flags;
647 u_int8_t fp_optcnt; /* TCP option count */
648 u_int8_t fp_wscale; /* TCP window scaling */
649 u_int8_t fp_ttl; /* IPv4 TTL */
650
651 int fp_getnum; /* DIOCOSFPGET number */
652 };
653
654
655 union pf_rule_ptr {
656 struct pf_rule *ptr __attribute__((aligned(8)));
657 u_int32_t nr __attribute__((aligned(8)));
658 } __attribute__((aligned(8)));
659
660 #define PF_ANCHOR_NAME_SIZE 64
661
662 struct pf_rule {
663 struct pf_rule_addr src;
664 struct pf_rule_addr dst;
665 #define PF_SKIP_IFP 0
666 #define PF_SKIP_DIR 1
667 #define PF_SKIP_AF 2
668 #define PF_SKIP_PROTO 3
669 #define PF_SKIP_SRC_ADDR 4
670 #define PF_SKIP_SRC_PORT 5
671 #define PF_SKIP_DST_ADDR 6
672 #define PF_SKIP_DST_PORT 7
673 #define PF_SKIP_COUNT 8
674 union pf_rule_ptr skip[PF_SKIP_COUNT];
675 #define PF_RULE_LABEL_SIZE 64
676 char label[PF_RULE_LABEL_SIZE];
677 #define PF_QNAME_SIZE 64
678 char ifname[IFNAMSIZ];
679 char qname[PF_QNAME_SIZE];
680 char pqname[PF_QNAME_SIZE];
681 #define PF_TAG_NAME_SIZE 64
682 char tagname[PF_TAG_NAME_SIZE];
683 char match_tagname[PF_TAG_NAME_SIZE];
684
685 char overload_tblname[PF_TABLE_NAME_SIZE];
686
687 TAILQ_ENTRY(pf_rule) entries;
688 #if !defined(__LP64__)
689 u_int32_t _pad[2];
690 #endif /* !__LP64__ */
691 struct pf_pool rpool;
692
693 u_int64_t evaluations;
694 u_int64_t packets[2];
695 u_int64_t bytes[2];
696
697 u_int64_t ticket;
698 #define PF_OWNER_NAME_SIZE 64
699 char owner[PF_OWNER_NAME_SIZE];
700 u_int32_t priority;
701
702 #ifdef KERNEL
703 struct pfi_kif *kif __attribute__((aligned(8)));
704 #else /* !KERNEL */
705 void *kif __attribute__((aligned(8)));
706 #endif /* !KERNEL */
707 struct pf_anchor *anchor __attribute__((aligned(8)));
708 #ifdef KERNEL
709 struct pfr_ktable *overload_tbl __attribute__((aligned(8)));
710 #else /* !KERNEL */
711 void *overload_tbl __attribute__((aligned(8)));
712 #endif /* !KERNEL */
713
714 pf_osfp_t os_fingerprint __attribute__((aligned(8)));
715
716 unsigned int rtableid;
717 u_int32_t timeout[PFTM_MAX];
718 u_int32_t states;
719 u_int32_t max_states;
720 u_int32_t src_nodes;
721 u_int32_t max_src_nodes;
722 u_int32_t max_src_states;
723 u_int32_t max_src_conn;
724 struct {
725 u_int32_t limit;
726 u_int32_t seconds;
727 } max_src_conn_rate;
728 u_int32_t qid;
729 u_int32_t pqid;
730 u_int32_t rt_listid;
731 u_int32_t nr;
732 u_int32_t prob;
733 uid_t cuid;
734 pid_t cpid;
735
736 u_int16_t return_icmp;
737 u_int16_t return_icmp6;
738 u_int16_t max_mss;
739 u_int16_t tag;
740 u_int16_t match_tag;
741
742 struct pf_rule_uid uid;
743 struct pf_rule_gid gid;
744
745 u_int32_t rule_flag;
746 u_int8_t action;
747 u_int8_t direction;
748 u_int8_t log;
749 u_int8_t logif;
750 u_int8_t quick;
751 u_int8_t ifnot;
752 u_int8_t match_tag_not;
753 u_int8_t natpass;
754
755 #define PF_STATE_NORMAL 0x1
756 #define PF_STATE_MODULATE 0x2
757 #define PF_STATE_SYNPROXY 0x3
758 u_int8_t keep_state;
759 sa_family_t af;
760 u_int8_t proto;
761 u_int8_t type;
762 u_int8_t code;
763 u_int8_t flags;
764 u_int8_t flagset;
765 u_int8_t min_ttl;
766 u_int8_t allow_opts;
767 u_int8_t rt;
768 u_int8_t return_ttl;
769
770 /* service class categories */
771 #define SCIDX_MASK 0x0f
772 #define SC_BE 0x10
773 #define SC_BK_SYS 0x11
774 #define SC_BK 0x12
775 #define SC_RD 0x13
776 #define SC_OAM 0x14
777 #define SC_AV 0x15
778 #define SC_RV 0x16
779 #define SC_VI 0x17
780 #define SC_VO 0x18
781 #define SC_CTL 0x19
782
783 /* diffserve code points */
784 #define DSCP_MASK 0xfc
785 #define DSCP_CUMASK 0x03
786 #define DSCP_EF 0xb8
787 #define DSCP_AF11 0x28
788 #define DSCP_AF12 0x30
789 #define DSCP_AF13 0x38
790 #define DSCP_AF21 0x48
791 #define DSCP_AF22 0x50
792 #define DSCP_AF23 0x58
793 #define DSCP_AF31 0x68
794 #define DSCP_AF32 0x70
795 #define DSCP_AF33 0x78
796 #define DSCP_AF41 0x88
797 #define DSCP_AF42 0x90
798 #define DSCP_AF43 0x98
799 #define AF_CLASSMASK 0xe0
800 #define AF_DROPPRECMASK 0x18
801 u_int8_t tos;
802 u_int8_t anchor_relative;
803 u_int8_t anchor_wildcard;
804
805 #define PF_FLUSH 0x01
806 #define PF_FLUSH_GLOBAL 0x02
807 u_int8_t flush;
808
809 u_int8_t proto_variant;
810 u_int8_t extfilter; /* Filter mode [PF_EXTFILTER_xxx] */
811 u_int8_t extmap; /* Mapping mode [PF_EXTMAP_xxx] */
812 u_int32_t dnpipe;
813 u_int32_t dntype;
814 };
815
816 /* pf device identifiers */
817 #define PFDEV_PF 0
818 #define PFDEV_PFM 1
819 #define PFDEV_MAX 2
820
821 /* rule flags */
822 #define PFRULE_DROP 0x0000
823 #define PFRULE_RETURNRST 0x0001
824 #define PFRULE_FRAGMENT 0x0002
825 #define PFRULE_RETURNICMP 0x0004
826 #define PFRULE_RETURN 0x0008
827 #define PFRULE_NOSYNC 0x0010
828 #define PFRULE_SRCTRACK 0x0020 /* track source states */
829 #define PFRULE_RULESRCTRACK 0x0040 /* per rule */
830
831 /* scrub flags */
832 #define PFRULE_NODF 0x0100
833 #define PFRULE_FRAGCROP 0x0200 /* non-buffering frag cache */
834 #define PFRULE_FRAGDROP 0x0400 /* drop funny fragments */
835 #define PFRULE_RANDOMID 0x0800
836 #define PFRULE_REASSEMBLE_TCP 0x1000
837
838 /* rule flags for TOS/DSCP/service class differentiation */
839 #define PFRULE_TOS 0x2000
840 #define PFRULE_DSCP 0x4000
841 #define PFRULE_SC 0x8000
842
843 /* rule flags again */
844 #define PFRULE_IFBOUND 0x00010000 /* if-bound */
845 #define PFRULE_PFM 0x00020000 /* created by pfm device */
846
847 #define PFSTATE_HIWAT 10000 /* default state table size */
848 #define PFSTATE_ADAPT_START 6000 /* default adaptive timeout start */
849 #define PFSTATE_ADAPT_END 12000 /* default adaptive timeout end */
850
851 #define PFAPPSTATE_HIWAT 10000 /* default same as state table */
852
853 enum pf_extmap {
854 PF_EXTMAP_APD = 1, /* Address-port-dependent mapping */
855 PF_EXTMAP_AD, /* Address-dependent mapping */
856 PF_EXTMAP_EI /* Endpoint-independent mapping */
857 };
858
859 enum pf_extfilter {
860 PF_EXTFILTER_APD = 1, /* Address-port-dependent filtering */
861 PF_EXTFILTER_AD, /* Address-dependent filtering */
862 PF_EXTFILTER_EI /* Endpoint-independent filtering */
863 };
864
865 struct pf_threshold {
866 u_int32_t limit;
867 #define PF_THRESHOLD_MULT 1000
868 #define PF_THRESHOLD_MAX 0xffffffff / PF_THRESHOLD_MULT
869 u_int32_t seconds;
870 u_int32_t count;
871 u_int32_t last;
872 };
873
874 struct pf_src_node {
875 RB_ENTRY(pf_src_node) entry;
876 struct pf_addr addr;
877 struct pf_addr raddr;
878 union pf_rule_ptr rule;
879 #ifdef KERNEL
880 struct pfi_kif *kif;
881 #else /* !KERNEL */
882 void *kif;
883 #endif /* !KERNEL */
884 u_int64_t bytes[2];
885 u_int64_t packets[2];
886 u_int32_t states;
887 u_int32_t conn;
888 struct pf_threshold conn_rate;
889 u_int64_t creation;
890 u_int64_t expire;
891 sa_family_t af;
892 u_int8_t ruletype;
893 };
894
895 #define PFSNODE_HIWAT 10000 /* default source node table size */
896
897 #ifdef KERNEL
898 struct pf_state_scrub {
899 struct timeval pfss_last; /* time received last packet */
900 u_int32_t pfss_tsecr; /* last echoed timestamp */
901 u_int32_t pfss_tsval; /* largest timestamp */
902 u_int32_t pfss_tsval0; /* original timestamp */
903 u_int16_t pfss_flags;
904 #define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */
905 #define PFSS_PAWS 0x0010 /* stricter PAWS checks */
906 #define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */
907 #define PFSS_DATA_TS 0x0040 /* timestamp on data packets */
908 #define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */
909 u_int8_t pfss_ttl; /* stashed TTL */
910 u_int8_t pad;
911 u_int32_t pfss_ts_mod; /* timestamp modulation */
912 };
913 #endif /* KERNEL */
914
915 union pf_state_xport {
916 u_int16_t port;
917 u_int16_t call_id;
918 u_int32_t spi;
919 };
920
921 struct pf_state_host {
922 struct pf_addr addr;
923 union pf_state_xport xport;
924 };
925
926 #ifdef KERNEL
927 struct pf_state_peer {
928 u_int32_t seqlo; /* Max sequence number sent */
929 u_int32_t seqhi; /* Max the other end ACKd + win */
930 u_int32_t seqdiff; /* Sequence number modulator */
931 u_int16_t max_win; /* largest window (pre scaling) */
932 u_int8_t state; /* active state level */
933 u_int8_t wscale; /* window scaling factor */
934 u_int16_t mss; /* Maximum segment size option */
935 u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */
936 struct pf_state_scrub *scrub; /* state is scrubbed */
937 u_int8_t pad[3];
938 };
939
940 TAILQ_HEAD(pf_state_queue, pf_state);
941
942 struct pf_state;
943 struct pf_pdesc;
944 struct pf_app_state;
945
946 typedef void (*pf_app_handler)(struct pf_state *, int, int, struct pf_pdesc *,
947 struct pfi_kif *);
948
949 typedef int (*pf_app_compare)(struct pf_app_state *, struct pf_app_state *);
950
951 struct pf_pptp_state {
952 struct pf_state *grev1_state;
953 };
954
955 struct pf_grev1_state {
956 struct pf_state *pptp_state;
957 };
958
959 struct pf_ike_state {
960 u_int64_t cookie;
961 };
962
963 struct pf_app_state {
964 pf_app_handler handler;
965 pf_app_compare compare_lan_ext;
966 pf_app_compare compare_ext_gwy;
967 union {
968 struct pf_pptp_state pptp;
969 struct pf_grev1_state grev1;
970 struct pf_ike_state ike;
971 } u;
972 };
973
974 /* keep synced with struct pf_state, used in RB_FIND */
975 struct pf_state_key_cmp {
976 struct pf_state_host lan;
977 struct pf_state_host gwy;
978 struct pf_state_host ext;
979 sa_family_t af;
980 u_int8_t proto;
981 u_int8_t direction;
982 u_int8_t proto_variant;
983 struct pf_app_state *app_state;
984 };
985
986 TAILQ_HEAD(pf_statelist, pf_state);
987
988 struct pf_state_key {
989 struct pf_state_host lan;
990 struct pf_state_host gwy;
991 struct pf_state_host ext;
992 sa_family_t af;
993 u_int8_t proto;
994 u_int8_t direction;
995 u_int8_t proto_variant;
996 struct pf_app_state *app_state;
997 u_int32_t flowsrc;
998 u_int32_t flowhash;
999
1000 RB_ENTRY(pf_state_key) entry_lan_ext;
1001 RB_ENTRY(pf_state_key) entry_ext_gwy;
1002 struct pf_statelist states;
1003 u_int32_t refcnt;
1004 };
1005
1006
1007 /* keep synced with struct pf_state, used in RB_FIND */
1008 struct pf_state_cmp {
1009 u_int64_t id;
1010 u_int32_t creatorid;
1011 u_int32_t pad;
1012 };
1013
1014 /* flowhash key (12-bytes multiple for performance) */
1015 struct pf_flowhash_key {
1016 struct pf_state_host ap1; /* address+port blob 1 */
1017 struct pf_state_host ap2; /* address+port blob 2 */
1018 u_int32_t af;
1019 u_int32_t proto;
1020 };
1021 #endif /* KERNEL */
1022
1023 struct hook_desc;
1024 TAILQ_HEAD(hook_desc_head, hook_desc);
1025
1026 #ifdef KERNEL
1027 struct pf_state {
1028 u_int64_t id;
1029 u_int32_t creatorid;
1030 u_int32_t pad;
1031
1032 TAILQ_ENTRY(pf_state) entry_list;
1033 TAILQ_ENTRY(pf_state) next;
1034 RB_ENTRY(pf_state) entry_id;
1035 struct pf_state_peer src;
1036 struct pf_state_peer dst;
1037 union pf_rule_ptr rule;
1038 union pf_rule_ptr anchor;
1039 union pf_rule_ptr nat_rule;
1040 struct pf_addr rt_addr;
1041 struct hook_desc_head unlink_hooks;
1042 struct pf_state_key *state_key;
1043 struct pfi_kif *kif;
1044 struct pfi_kif *rt_kif;
1045 struct pf_src_node *src_node;
1046 struct pf_src_node *nat_src_node;
1047 u_int64_t packets[2];
1048 u_int64_t bytes[2];
1049 u_int64_t creation;
1050 u_int64_t expire;
1051 u_int64_t pfsync_time;
1052 u_int16_t tag;
1053 u_int8_t log;
1054 u_int8_t allow_opts;
1055 u_int8_t timeout;
1056 u_int8_t sync_flags;
1057 };
1058 #endif /* KERNEL */
1059
1060 #define PFSTATE_NOSYNC 0x01
1061 #define PFSTATE_FROMSYNC 0x02
1062 #define PFSTATE_STALE 0x04
1063
1064 #define __packed __attribute__((__packed__))
1065
1066 /*
1067 * Unified state structures for pulling states out of the kernel
1068 * used by pfsync(4) and the pf(4) ioctl.
1069 */
1070 struct pfsync_state_scrub {
1071 u_int16_t pfss_flags;
1072 u_int8_t pfss_ttl; /* stashed TTL */
1073 #define PFSYNC_SCRUB_FLAG_VALID 0x01
1074 u_int8_t scrub_flag;
1075 u_int32_t pfss_ts_mod; /* timestamp modulation */
1076 } __packed;
1077
1078 struct pfsync_state_host {
1079 struct pf_addr addr;
1080 union pf_state_xport xport;
1081 u_int16_t pad[2];
1082 } __packed;
1083
1084 struct pfsync_state_peer {
1085 struct pfsync_state_scrub scrub; /* state is scrubbed */
1086 u_int32_t seqlo; /* Max sequence number sent */
1087 u_int32_t seqhi; /* Max the other end ACKd + win */
1088 u_int32_t seqdiff; /* Sequence number modulator */
1089 u_int16_t max_win; /* largest window (pre scaling) */
1090 u_int16_t mss; /* Maximum segment size option */
1091 u_int8_t state; /* active state level */
1092 u_int8_t wscale; /* window scaling factor */
1093 u_int8_t pad[6];
1094 } __packed;
1095
1096 struct pfsync_state {
1097 u_int32_t id[2];
1098 char ifname[IFNAMSIZ];
1099 struct pfsync_state_host lan;
1100 struct pfsync_state_host gwy;
1101 struct pfsync_state_host ext;
1102 struct pfsync_state_peer src;
1103 struct pfsync_state_peer dst;
1104 struct pf_addr rt_addr;
1105 struct hook_desc_head unlink_hooks;
1106 #if !defined(__LP64__)
1107 u_int32_t _pad[2];
1108 #endif /* !__LP64__ */
1109 u_int32_t rule;
1110 u_int32_t anchor;
1111 u_int32_t nat_rule;
1112 u_int64_t creation;
1113 u_int64_t expire;
1114 u_int32_t packets[2][2];
1115 u_int32_t bytes[2][2];
1116 u_int32_t creatorid;
1117 u_int16_t tag;
1118 sa_family_t af;
1119 u_int8_t proto;
1120 u_int8_t direction;
1121 u_int8_t log;
1122 u_int8_t allow_opts;
1123 u_int8_t timeout;
1124 u_int8_t sync_flags;
1125 u_int8_t updates;
1126 u_int8_t proto_variant;
1127 u_int8_t __pad;
1128 u_int32_t flowhash;
1129 } __packed;
1130
1131 #define PFSYNC_FLAG_COMPRESS 0x01
1132 #define PFSYNC_FLAG_STALE 0x02
1133 #define PFSYNC_FLAG_SRCNODE 0x04
1134 #define PFSYNC_FLAG_NATSRCNODE 0x08
1135
1136 #ifdef KERNEL
1137 /* for copies to/from userland via pf_ioctl() */
1138 #define pf_state_peer_to_pfsync(s, d) do { \
1139 (d)->seqlo = (s)->seqlo; \
1140 (d)->seqhi = (s)->seqhi; \
1141 (d)->seqdiff = (s)->seqdiff; \
1142 (d)->max_win = (s)->max_win; \
1143 (d)->mss = (s)->mss; \
1144 (d)->state = (s)->state; \
1145 (d)->wscale = (s)->wscale; \
1146 if ((s)->scrub) { \
1147 (d)->scrub.pfss_flags = \
1148 (s)->scrub->pfss_flags & PFSS_TIMESTAMP; \
1149 (d)->scrub.pfss_ttl = (s)->scrub->pfss_ttl; \
1150 (d)->scrub.pfss_ts_mod = (s)->scrub->pfss_ts_mod; \
1151 (d)->scrub.scrub_flag = PFSYNC_SCRUB_FLAG_VALID; \
1152 } \
1153 } while (0)
1154
1155 #define pf_state_peer_from_pfsync(s, d) do { \
1156 (d)->seqlo = (s)->seqlo; \
1157 (d)->seqhi = (s)->seqhi; \
1158 (d)->seqdiff = (s)->seqdiff; \
1159 (d)->max_win = (s)->max_win; \
1160 (d)->mss = ntohs((s)->mss); \
1161 (d)->state = (s)->state; \
1162 (d)->wscale = (s)->wscale; \
1163 if ((s)->scrub.scrub_flag == PFSYNC_SCRUB_FLAG_VALID && \
1164 (d)->scrub != NULL) { \
1165 (d)->scrub->pfss_flags = \
1166 ntohs((s)->scrub.pfss_flags) & PFSS_TIMESTAMP; \
1167 (d)->scrub->pfss_ttl = (s)->scrub.pfss_ttl; \
1168 (d)->scrub->pfss_ts_mod = (s)->scrub.pfss_ts_mod; \
1169 } \
1170 } while (0)
1171 #endif /* KERNEL */
1172
1173 #define pf_state_counter_to_pfsync(s, d) do { \
1174 d[0] = (s>>32)&0xffffffff; \
1175 d[1] = s&0xffffffff; \
1176 } while (0)
1177
1178 #define pf_state_counter_from_pfsync(s) \
1179 (((u_int64_t)(s[0])<<32) | (u_int64_t)(s[1]))
1180
1181
1182
1183 TAILQ_HEAD(pf_rulequeue, pf_rule);
1184
1185 struct pf_anchor;
1186
1187 struct pf_ruleset {
1188 struct {
1189 struct pf_rulequeue queues[2];
1190 struct {
1191 struct pf_rulequeue *ptr;
1192 struct pf_rule **ptr_array;
1193 u_int32_t rcount;
1194 u_int32_t ticket;
1195 int open;
1196 } active, inactive;
1197 } rules[PF_RULESET_MAX];
1198 struct pf_anchor *anchor;
1199 u_int32_t tticket;
1200 int tables;
1201 int topen;
1202 };
1203
1204 RB_HEAD(pf_anchor_global, pf_anchor);
1205 RB_HEAD(pf_anchor_node, pf_anchor);
1206 struct pf_anchor {
1207 RB_ENTRY(pf_anchor) entry_global;
1208 RB_ENTRY(pf_anchor) entry_node;
1209 struct pf_anchor *parent;
1210 struct pf_anchor_node children;
1211 char name[PF_ANCHOR_NAME_SIZE];
1212 char path[MAXPATHLEN];
1213 struct pf_ruleset ruleset;
1214 int refcnt; /* anchor rules */
1215 int match;
1216 char owner[PF_OWNER_NAME_SIZE];
1217 };
1218 #ifdef KERNEL
1219 RB_PROTOTYPE_SC(__private_extern__, pf_anchor_global, pf_anchor, entry_global,
1220 pf_anchor_compare);
1221 RB_PROTOTYPE_SC(__private_extern__, pf_anchor_node, pf_anchor, entry_node,
1222 pf_anchor_compare);
1223 #else /* !KERNEL */
1224 RB_PROTOTYPE(pf_anchor_global, pf_anchor, entry_global, pf_anchor_compare);
1225 RB_PROTOTYPE(pf_anchor_node, pf_anchor, entry_node, pf_anchor_compare);
1226 #endif /* !KERNEL */
1227
1228 #define PF_RESERVED_ANCHOR "_pf"
1229
1230 #define PFR_TFLAG_PERSIST 0x00000001
1231 #define PFR_TFLAG_CONST 0x00000002
1232 #define PFR_TFLAG_ACTIVE 0x00000004
1233 #define PFR_TFLAG_INACTIVE 0x00000008
1234 #define PFR_TFLAG_REFERENCED 0x00000010
1235 #define PFR_TFLAG_REFDANCHOR 0x00000020
1236 #define PFR_TFLAG_USRMASK 0x00000003
1237 #define PFR_TFLAG_SETMASK 0x0000003C
1238 #define PFR_TFLAG_ALLMASK 0x0000003F
1239
1240 struct pfr_table {
1241 char pfrt_anchor[MAXPATHLEN];
1242 char pfrt_name[PF_TABLE_NAME_SIZE];
1243 u_int32_t pfrt_flags;
1244 u_int8_t pfrt_fback;
1245 };
1246
1247 enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED,
1248 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE,
1249 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_MAX };
1250
1251 struct pfr_addr {
1252 union {
1253 struct in_addr _pfra_ip4addr;
1254 struct in6_addr _pfra_ip6addr;
1255 } pfra_u;
1256 u_int8_t pfra_af;
1257 u_int8_t pfra_net;
1258 u_int8_t pfra_not;
1259 u_int8_t pfra_fback;
1260 };
1261 #define pfra_ip4addr pfra_u._pfra_ip4addr
1262 #define pfra_ip6addr pfra_u._pfra_ip6addr
1263
1264 enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX };
1265 enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX };
1266 #define PFR_OP_XPASS PFR_OP_ADDR_MAX
1267
1268 struct pfr_astats {
1269 struct pfr_addr pfras_a;
1270 #if !defined(__LP64__)
1271 u_int32_t _pad;
1272 #endif /* !__LP64__ */
1273 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
1274 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
1275 u_int64_t pfras_tzero;
1276 };
1277
1278 enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX };
1279
1280 struct pfr_tstats {
1281 struct pfr_table pfrts_t;
1282 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
1283 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
1284 u_int64_t pfrts_match;
1285 u_int64_t pfrts_nomatch;
1286 u_int64_t pfrts_tzero;
1287 int pfrts_cnt;
1288 int pfrts_refcnt[PFR_REFCNT_MAX];
1289 #if !defined(__LP64__)
1290 u_int32_t _pad;
1291 #endif /* !__LP64__ */
1292 };
1293 #define pfrts_name pfrts_t.pfrt_name
1294 #define pfrts_flags pfrts_t.pfrt_flags
1295
1296 #ifdef KERNEL
1297 SLIST_HEAD(pfr_kentryworkq, pfr_kentry);
1298 struct pfr_kentry {
1299 struct radix_node pfrke_node[2];
1300 union sockaddr_union pfrke_sa;
1301 u_int64_t pfrke_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
1302 u_int64_t pfrke_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
1303 SLIST_ENTRY(pfr_kentry) pfrke_workq;
1304 u_int64_t pfrke_tzero;
1305 u_int8_t pfrke_af;
1306 u_int8_t pfrke_net;
1307 u_int8_t pfrke_not;
1308 u_int8_t pfrke_mark;
1309 u_int8_t pfrke_intrpool;
1310 };
1311
1312 SLIST_HEAD(pfr_ktableworkq, pfr_ktable);
1313 RB_HEAD(pfr_ktablehead, pfr_ktable);
1314 struct pfr_ktable {
1315 struct pfr_tstats pfrkt_ts;
1316 RB_ENTRY(pfr_ktable) pfrkt_tree;
1317 SLIST_ENTRY(pfr_ktable) pfrkt_workq;
1318 struct radix_node_head *pfrkt_ip4;
1319 struct radix_node_head *pfrkt_ip6;
1320 struct pfr_ktable *pfrkt_shadow;
1321 struct pfr_ktable *pfrkt_root;
1322 struct pf_ruleset *pfrkt_rs;
1323 u_int64_t pfrkt_larg;
1324 u_int32_t pfrkt_nflags;
1325 };
1326 #define pfrkt_t pfrkt_ts.pfrts_t
1327 #define pfrkt_name pfrkt_t.pfrt_name
1328 #define pfrkt_anchor pfrkt_t.pfrt_anchor
1329 #define pfrkt_ruleset pfrkt_t.pfrt_ruleset
1330 #define pfrkt_flags pfrkt_t.pfrt_flags
1331 #define pfrkt_cnt pfrkt_ts.pfrts_cnt
1332 #define pfrkt_refcnt pfrkt_ts.pfrts_refcnt
1333 #define pfrkt_packets pfrkt_ts.pfrts_packets
1334 #define pfrkt_bytes pfrkt_ts.pfrts_bytes
1335 #define pfrkt_match pfrkt_ts.pfrts_match
1336 #define pfrkt_nomatch pfrkt_ts.pfrts_nomatch
1337 #define pfrkt_tzero pfrkt_ts.pfrts_tzero
1338
1339 RB_HEAD(pf_state_tree_lan_ext, pf_state_key);
1340 RB_PROTOTYPE_SC(__private_extern__, pf_state_tree_lan_ext, pf_state_key,
1341 entry_lan_ext, pf_state_compare_lan_ext);
1342
1343 RB_HEAD(pf_state_tree_ext_gwy, pf_state_key);
1344 RB_PROTOTYPE_SC(__private_extern__, pf_state_tree_ext_gwy, pf_state_key,
1345 entry_ext_gwy, pf_state_compare_ext_gwy);
1346
1347 RB_HEAD(pfi_ifhead, pfi_kif);
1348
1349 /* state tables */
1350 extern struct pf_state_tree_lan_ext pf_statetbl_lan_ext;
1351 extern struct pf_state_tree_ext_gwy pf_statetbl_ext_gwy;
1352
1353 /* keep synced with pfi_kif, used in RB_FIND */
1354 struct pfi_kif_cmp {
1355 char pfik_name[IFNAMSIZ];
1356 };
1357
1358 struct pfi_kif {
1359 char pfik_name[IFNAMSIZ];
1360 RB_ENTRY(pfi_kif) pfik_tree;
1361 u_int64_t pfik_packets[2][2][2];
1362 u_int64_t pfik_bytes[2][2][2];
1363 u_int64_t pfik_tzero;
1364 int pfik_flags;
1365 void *pfik_ah_cookie;
1366 struct ifnet *pfik_ifp;
1367 int pfik_states;
1368 int pfik_rules;
1369 TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs;
1370 };
1371
1372 enum pfi_kif_refs {
1373 PFI_KIF_REF_NONE,
1374 PFI_KIF_REF_STATE,
1375 PFI_KIF_REF_RULE
1376 };
1377
1378 struct pfi_uif {
1379 #else /* !KERNEL */
1380 struct pfi_kif {
1381 #endif /* !KERNEL */
1382 char pfik_name[IFNAMSIZ];
1383 u_int64_t pfik_packets[2][2][2];
1384 u_int64_t pfik_bytes[2][2][2];
1385 u_int64_t pfik_tzero;
1386 int pfik_flags;
1387 int pfik_states;
1388 int pfik_rules;
1389 #if !defined(__LP64__)
1390 u_int32_t _pad;
1391 #endif /* !__LP64__ */
1392 };
1393
1394 #define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */
1395
1396 #ifdef KERNEL
1397 struct pf_pdesc {
1398 struct {
1399 int done;
1400 uid_t uid;
1401 gid_t gid;
1402 pid_t pid;
1403 } lookup;
1404 u_int64_t tot_len; /* Make Mickey money */
1405 union {
1406 struct tcphdr *tcp;
1407 struct udphdr *udp;
1408 struct icmp *icmp;
1409 #if INET6
1410 struct icmp6_hdr *icmp6;
1411 #endif /* INET6 */
1412 struct pf_grev1_hdr *grev1;
1413 struct pf_esp_hdr *esp;
1414 void *any;
1415 } hdr;
1416 struct pf_addr baddr; /* address before translation */
1417 struct pf_addr naddr; /* address after translation */
1418 struct pf_rule *nat_rule; /* nat/rdr rule applied to packet */
1419 struct pf_addr *src;
1420 struct pf_addr *dst;
1421 struct ether_header
1422 *eh;
1423 struct mbuf *mp;
1424 int lmw; /* lazy writable offset */
1425 struct pf_mtag *pf_mtag;
1426 u_int16_t *ip_sum;
1427 u_int32_t p_len; /* total length of payload */
1428 u_int16_t flags; /* Let SCRUB trigger behavior in */
1429 /* state code. Easier than tags */
1430 #define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */
1431 #define PFDESC_IP_REAS 0x0002 /* IP frags would've been reassembled */
1432 #define PFDESC_IP_FRAG 0x0004 /* This is a fragment */
1433 sa_family_t af;
1434 u_int8_t proto;
1435 u_int8_t tos;
1436 u_int8_t proto_variant;
1437 mbuf_svc_class_t sc; /* mbuf service class (MBUF_SVC) */
1438 u_int32_t pktflags; /* mbuf packet flags (PKTF) */
1439 u_int32_t flowsrc; /* flow source (FLOWSRC) */
1440 u_int32_t flowhash; /* flow hash to identify the sender */
1441 };
1442 #endif /* KERNEL */
1443
1444 /* flags for RDR options */
1445 #define PF_DPORT_RANGE 0x01 /* Dest port uses range */
1446 #define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */
1447
1448 /* Reasons code for passing/dropping a packet */
1449 #define PFRES_MATCH 0 /* Explicit match of a rule */
1450 #define PFRES_BADOFF 1 /* Bad offset for pull_hdr */
1451 #define PFRES_FRAG 2 /* Dropping following fragment */
1452 #define PFRES_SHORT 3 /* Dropping short packet */
1453 #define PFRES_NORM 4 /* Dropping by normalizer */
1454 #define PFRES_MEMORY 5 /* Dropped due to lacking mem */
1455 #define PFRES_TS 6 /* Bad TCP Timestamp (RFC1323) */
1456 #define PFRES_CONGEST 7 /* Congestion (of ipintrq) */
1457 #define PFRES_IPOPTIONS 8 /* IP option */
1458 #define PFRES_PROTCKSUM 9 /* Protocol checksum invalid */
1459 #define PFRES_BADSTATE 10 /* State mismatch */
1460 #define PFRES_STATEINS 11 /* State insertion failure */
1461 #define PFRES_MAXSTATES 12 /* State limit */
1462 #define PFRES_SRCLIMIT 13 /* Source node/conn limit */
1463 #define PFRES_SYNPROXY 14 /* SYN proxy */
1464 #define PFRES_DUMMYNET 15 /* Dummynet */
1465 #define PFRES_MAX 16 /* total+1 */
1466
1467 #define PFRES_NAMES { \
1468 "match", \
1469 "bad-offset", \
1470 "fragment", \
1471 "short", \
1472 "normalize", \
1473 "memory", \
1474 "bad-timestamp", \
1475 "congestion", \
1476 "ip-option", \
1477 "proto-cksum", \
1478 "state-mismatch", \
1479 "state-insert", \
1480 "state-limit", \
1481 "src-limit", \
1482 "synproxy", \
1483 "dummynet", \
1484 NULL \
1485 }
1486
1487 /* Counters for other things we want to keep track of */
1488 #define LCNT_STATES 0 /* states */
1489 #define LCNT_SRCSTATES 1 /* max-src-states */
1490 #define LCNT_SRCNODES 2 /* max-src-nodes */
1491 #define LCNT_SRCCONN 3 /* max-src-conn */
1492 #define LCNT_SRCCONNRATE 4 /* max-src-conn-rate */
1493 #define LCNT_OVERLOAD_TABLE 5 /* entry added to overload table */
1494 #define LCNT_OVERLOAD_FLUSH 6 /* state entries flushed */
1495 #define LCNT_MAX 7 /* total+1 */
1496
1497 #define LCNT_NAMES { \
1498 "max states per rule", \
1499 "max-src-states", \
1500 "max-src-nodes", \
1501 "max-src-conn", \
1502 "max-src-conn-rate", \
1503 "overload table insertion", \
1504 "overload flush states", \
1505 NULL \
1506 }
1507
1508 /* UDP state enumeration */
1509 #define PFUDPS_NO_TRAFFIC 0
1510 #define PFUDPS_SINGLE 1
1511 #define PFUDPS_MULTIPLE 2
1512
1513 #define PFUDPS_NSTATES 3 /* number of state levels */
1514
1515 #define PFUDPS_NAMES { \
1516 "NO_TRAFFIC", \
1517 "SINGLE", \
1518 "MULTIPLE", \
1519 NULL \
1520 }
1521
1522 /* GREv1 protocol state enumeration */
1523 #define PFGRE1S_NO_TRAFFIC 0
1524 #define PFGRE1S_INITIATING 1
1525 #define PFGRE1S_ESTABLISHED 2
1526
1527 #define PFGRE1S_NSTATES 3 /* number of state levels */
1528
1529 #define PFGRE1S_NAMES { \
1530 "NO_TRAFFIC", \
1531 "INITIATING", \
1532 "ESTABLISHED", \
1533 NULL \
1534 }
1535
1536 #define PFESPS_NO_TRAFFIC 0
1537 #define PFESPS_INITIATING 1
1538 #define PFESPS_ESTABLISHED 2
1539
1540 #define PFESPS_NSTATES 3 /* number of state levels */
1541
1542 #define PFESPS_NAMES { "NO_TRAFFIC", "INITIATING", "ESTABLISHED", NULL }
1543
1544 /* Other protocol state enumeration */
1545 #define PFOTHERS_NO_TRAFFIC 0
1546 #define PFOTHERS_SINGLE 1
1547 #define PFOTHERS_MULTIPLE 2
1548
1549 #define PFOTHERS_NSTATES 3 /* number of state levels */
1550
1551 #define PFOTHERS_NAMES { \
1552 "NO_TRAFFIC", \
1553 "SINGLE", \
1554 "MULTIPLE", \
1555 NULL \
1556 }
1557
1558 #define FCNT_STATE_SEARCH 0
1559 #define FCNT_STATE_INSERT 1
1560 #define FCNT_STATE_REMOVALS 2
1561 #define FCNT_MAX 3
1562
1563 #define SCNT_SRC_NODE_SEARCH 0
1564 #define SCNT_SRC_NODE_INSERT 1
1565 #define SCNT_SRC_NODE_REMOVALS 2
1566 #define SCNT_MAX 3
1567
1568 #ifdef KERNEL
1569 #define ACTION_SET(a, x) \
1570 do { \
1571 if ((a) != NULL) \
1572 *(a) = (x); \
1573 } while (0)
1574
1575 #define REASON_SET(a, x) \
1576 do { \
1577 if ((a) != NULL) \
1578 *(a) = (x); \
1579 if (x < PFRES_MAX) \
1580 pf_status.counters[x]++; \
1581 } while (0)
1582 #endif /* KERNEL */
1583
1584 struct pf_status {
1585 u_int64_t counters[PFRES_MAX];
1586 u_int64_t lcounters[LCNT_MAX]; /* limit counters */
1587 u_int64_t fcounters[FCNT_MAX];
1588 u_int64_t scounters[SCNT_MAX];
1589 u_int64_t pcounters[2][2][3];
1590 u_int64_t bcounters[2][2];
1591 u_int64_t stateid;
1592 u_int32_t running;
1593 u_int32_t states;
1594 u_int32_t src_nodes;
1595 u_int64_t since __attribute__((aligned(8)));
1596 u_int32_t debug;
1597 u_int32_t hostid;
1598 char ifname[IFNAMSIZ];
1599 u_int8_t pf_chksum[PF_MD5_DIGEST_LENGTH];
1600 };
1601
1602 struct cbq_opts {
1603 u_int32_t minburst;
1604 u_int32_t maxburst;
1605 u_int32_t pktsize;
1606 u_int32_t maxpktsize;
1607 u_int32_t ns_per_byte;
1608 u_int32_t maxidle;
1609 int32_t minidle;
1610 u_int32_t offtime;
1611 u_int32_t flags;
1612 };
1613
1614 struct priq_opts {
1615 u_int32_t flags;
1616 };
1617
1618 struct qfq_opts {
1619 u_int32_t flags;
1620 u_int32_t lmax;
1621 };
1622
1623 struct hfsc_opts {
1624 /* real-time service curve */
1625 u_int64_t rtsc_m1; /* slope of the 1st segment in bps */
1626 u_int64_t rtsc_d; /* the x-projection of m1 in msec */
1627 u_int64_t rtsc_m2; /* slope of the 2nd segment in bps */
1628 u_int32_t rtsc_fl; /* service curve flags */
1629 #if !defined(__LP64__)
1630 u_int32_t _pad;
1631 #endif /* !__LP64__ */
1632 /* link-sharing service curve */
1633 u_int64_t lssc_m1;
1634 u_int64_t lssc_d;
1635 u_int64_t lssc_m2;
1636 u_int32_t lssc_fl;
1637 #if !defined(__LP64__)
1638 u_int32_t __pad;
1639 #endif /* !__LP64__ */
1640 /* upper-limit service curve */
1641 u_int64_t ulsc_m1;
1642 u_int64_t ulsc_d;
1643 u_int64_t ulsc_m2;
1644 u_int32_t ulsc_fl;
1645 u_int32_t flags; /* scheduler flags */
1646 };
1647
1648 struct fairq_opts {
1649 u_int32_t nbuckets; /* hash buckets */
1650 u_int32_t flags;
1651 u_int64_t hogs_m1; /* hog detection bandwidth */
1652
1653 /* link-sharing service curve */
1654 u_int64_t lssc_m1;
1655 u_int64_t lssc_d;
1656 u_int64_t lssc_m2;
1657 };
1658
1659 /* bandwidth types */
1660 #define PF_ALTQ_BW_ABSOLUTE 1 /* bw in absolute value (bps) */
1661 #define PF_ALTQ_BW_PERCENT 2 /* bandwidth in percentage */
1662
1663 /* ALTQ rule flags */
1664 #define PF_ALTQF_TBR 0x1 /* enable Token Bucket Regulator */
1665
1666 /* queue rule flags */
1667 #define PF_ALTQ_QRF_WEIGHT 0x1 /* weight instead of priority */
1668
1669 struct pf_altq {
1670 char ifname[IFNAMSIZ];
1671
1672 /* discipline-specific state */
1673 void *altq_disc __attribute__((aligned(8)));
1674 TAILQ_ENTRY(pf_altq) entries __attribute__((aligned(8)));
1675 #if !defined(__LP64__)
1676 u_int32_t _pad[2];
1677 #endif /* !__LP64__ */
1678
1679 u_int32_t aflags; /* ALTQ rule flags */
1680 u_int32_t bwtype; /* bandwidth type */
1681
1682 /* scheduler spec */
1683 u_int32_t scheduler; /* scheduler type */
1684 u_int32_t tbrsize; /* tokenbucket regulator size */
1685 u_int64_t ifbandwidth; /* interface bandwidth */
1686
1687 /* queue spec */
1688 char qname[PF_QNAME_SIZE]; /* queue name */
1689 char parent[PF_QNAME_SIZE]; /* parent name */
1690 u_int32_t parent_qid; /* parent queue id */
1691 u_int32_t qrflags; /* queue rule flags */
1692 union {
1693 u_int32_t priority; /* priority */
1694 u_int32_t weight; /* weight */
1695 };
1696 u_int32_t qlimit; /* queue size limit */
1697 u_int32_t flags; /* misc flags */
1698 #if !defined(__LP64__)
1699 u_int32_t __pad;
1700 #endif /* !__LP64__ */
1701 u_int64_t bandwidth; /* queue bandwidth */
1702 union {
1703 struct cbq_opts cbq_opts;
1704 struct priq_opts priq_opts;
1705 struct hfsc_opts hfsc_opts;
1706 struct fairq_opts fairq_opts;
1707 struct qfq_opts qfq_opts;
1708 } pq_u;
1709
1710 u_int32_t qid; /* return value */
1711 };
1712
1713 struct pf_tagname {
1714 TAILQ_ENTRY(pf_tagname) entries;
1715 char name[PF_TAG_NAME_SIZE];
1716 u_int16_t tag;
1717 int ref;
1718 };
1719
1720 #define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */
1721 #define PFFRAG_FRAG_HIWAT 1000 /* Number of fragmented packets */
1722 #define PFFRAG_FRCENT_HIWAT 50000 /* Number of fragment cache entries */
1723 #define PFFRAG_FRCACHE_HIWAT 10000 /* Number of fragment descriptors */
1724
1725 #define PFR_KTABLE_HIWAT 1000 /* Number of tables */
1726 #define PFR_KENTRY_HIWAT 200000 /* Number of table entries */
1727 #define PFR_KENTRY_HIWAT_SMALL 100000 /* Number of table entries (tiny hosts) */
1728
1729 /*
1730 * ioctl parameter structures
1731 */
1732
1733 struct pfioc_pooladdr {
1734 u_int32_t action;
1735 u_int32_t ticket;
1736 u_int32_t nr;
1737 u_int32_t r_num;
1738 u_int8_t r_action;
1739 u_int8_t r_last;
1740 u_int8_t af;
1741 char anchor[MAXPATHLEN];
1742 struct pf_pooladdr addr;
1743 };
1744
1745 struct pfioc_rule {
1746 u_int32_t action;
1747 u_int32_t ticket;
1748 u_int32_t pool_ticket;
1749 u_int32_t nr;
1750 char anchor[MAXPATHLEN];
1751 char anchor_call[MAXPATHLEN];
1752 struct pf_rule rule;
1753 };
1754
1755 struct pfioc_natlook {
1756 struct pf_addr saddr;
1757 struct pf_addr daddr;
1758 struct pf_addr rsaddr;
1759 struct pf_addr rdaddr;
1760 union pf_state_xport sxport;
1761 union pf_state_xport dxport;
1762 union pf_state_xport rsxport;
1763 union pf_state_xport rdxport;
1764 sa_family_t af;
1765 u_int8_t proto;
1766 u_int8_t proto_variant;
1767 u_int8_t direction;
1768 };
1769
1770 struct pfioc_state {
1771 struct pfsync_state state;
1772 };
1773
1774 struct pfioc_src_node_kill {
1775 /* XXX returns the number of src nodes killed in psnk_af */
1776 sa_family_t psnk_af;
1777 struct pf_rule_addr psnk_src;
1778 struct pf_rule_addr psnk_dst;
1779 };
1780
1781 struct pfioc_state_addr_kill {
1782 struct pf_addr_wrap addr;
1783 u_int8_t reserved_[3];
1784 u_int8_t neg;
1785 union pf_rule_xport xport;
1786 };
1787
1788 struct pfioc_state_kill {
1789 /* XXX returns the number of states killed in psk_af */
1790 sa_family_t psk_af;
1791 u_int8_t psk_proto;
1792 u_int8_t psk_proto_variant;
1793 u_int8_t _pad;
1794 struct pfioc_state_addr_kill psk_src;
1795 struct pfioc_state_addr_kill psk_dst;
1796 char psk_ifname[IFNAMSIZ];
1797 };
1798
1799 struct pfioc_states {
1800 int ps_len;
1801 union {
1802 caddr_t psu_buf;
1803 struct pfsync_state *psu_states;
1804 } ps_u __attribute__((aligned(8)));
1805 #define ps_buf ps_u.psu_buf
1806 #define ps_states ps_u.psu_states
1807 };
1808
1809 #ifdef KERNEL
1810 struct pfioc_states_32 {
1811 int ps_len;
1812 union {
1813 user32_addr_t psu_buf;
1814 user32_addr_t psu_states;
1815 } ps_u __attribute__((aligned(8)));
1816 };
1817
1818 struct pfioc_states_64 {
1819 int ps_len;
1820 union {
1821 user64_addr_t psu_buf;
1822 user64_addr_t psu_states;
1823 } ps_u __attribute__((aligned(8)));
1824 };
1825 #endif /* KERNEL */
1826
1827 #define PFTOK_PROCNAME_LEN 64
1828 #pragma pack(1)
1829 struct pfioc_token {
1830 u_int64_t token_value;
1831 u_int64_t timestamp;
1832 pid_t pid;
1833 char proc_name[PFTOK_PROCNAME_LEN];
1834 };
1835 #pragma pack()
1836
1837 struct pfioc_kernel_token {
1838 SLIST_ENTRY(pfioc_kernel_token) next;
1839 struct pfioc_token token;
1840 };
1841
1842 struct pfioc_remove_token {
1843 u_int64_t token_value;
1844 u_int64_t refcount;
1845 };
1846
1847 struct pfioc_tokens {
1848 int size;
1849 union {
1850 caddr_t pgtu_buf;
1851 struct pfioc_token *pgtu_tokens;
1852 } pgt_u __attribute__((aligned(8)));
1853 #define pgt_buf pgt_u.pgtu_buf
1854 #define pgt_tokens pgt_u.pgtu_tokens
1855 };
1856
1857 #ifdef KERNEL
1858 struct pfioc_tokens_32 {
1859 int size;
1860 union {
1861 user32_addr_t pgtu_buf;
1862 user32_addr_t pgtu_tokens;
1863 } pgt_u __attribute__((aligned(8)));
1864 };
1865
1866 struct pfioc_tokens_64 {
1867 int size;
1868 union {
1869 user64_addr_t pgtu_buf;
1870 user64_addr_t pgtu_tokens;
1871 } pgt_u __attribute__((aligned(8)));
1872 };
1873 #endif /* KERNEL */
1874
1875
1876 struct pfioc_src_nodes {
1877 int psn_len;
1878 union {
1879 caddr_t psu_buf;
1880 struct pf_src_node *psu_src_nodes;
1881 } psn_u __attribute__((aligned(8)));
1882 #define psn_buf psn_u.psu_buf
1883 #define psn_src_nodes psn_u.psu_src_nodes
1884 };
1885
1886 #ifdef KERNEL
1887 struct pfioc_src_nodes_32 {
1888 int psn_len;
1889 union {
1890 user32_addr_t psu_buf;
1891 user32_addr_t psu_src_nodes;
1892 } psn_u __attribute__((aligned(8)));
1893 };
1894
1895 struct pfioc_src_nodes_64 {
1896 int psn_len;
1897 union {
1898 user64_addr_t psu_buf;
1899 user64_addr_t psu_src_nodes;
1900 } psn_u __attribute__((aligned(8)));
1901 };
1902 #endif /* KERNEL */
1903
1904 struct pfioc_if {
1905 char ifname[IFNAMSIZ];
1906 };
1907
1908 struct pfioc_tm {
1909 int timeout;
1910 int seconds;
1911 };
1912
1913 struct pfioc_limit {
1914 int index;
1915 unsigned limit;
1916 };
1917
1918 struct pfioc_altq {
1919 u_int32_t action;
1920 u_int32_t ticket;
1921 u_int32_t nr;
1922 struct pf_altq altq __attribute__((aligned(8)));
1923 };
1924
1925 struct pfioc_qstats {
1926 u_int32_t ticket;
1927 u_int32_t nr;
1928 void *buf __attribute__((aligned(8)));
1929 int nbytes __attribute__((aligned(8)));
1930 u_int8_t scheduler;
1931 };
1932
1933 struct pfioc_ruleset {
1934 u_int32_t nr;
1935 char path[MAXPATHLEN];
1936 char name[PF_ANCHOR_NAME_SIZE];
1937 };
1938
1939 #define PF_RULESET_ALTQ (PF_RULESET_MAX)
1940 #define PF_RULESET_TABLE (PF_RULESET_MAX+1)
1941 struct pfioc_trans {
1942 int size; /* number of elements */
1943 int esize; /* size of each element in bytes */
1944 struct pfioc_trans_e {
1945 int rs_num;
1946 char anchor[MAXPATHLEN];
1947 u_int32_t ticket;
1948 } *array __attribute__((aligned(8)));
1949 };
1950
1951 #ifdef KERNEL
1952 struct pfioc_trans_32 {
1953 int size; /* number of elements */
1954 int esize; /* size of each element in bytes */
1955 user32_addr_t array __attribute__((aligned(8)));
1956 };
1957
1958 struct pfioc_trans_64 {
1959 int size; /* number of elements */
1960 int esize; /* size of each element in bytes */
1961 user64_addr_t array __attribute__((aligned(8)));
1962 };
1963 #endif /* KERNEL */
1964
1965
1966 #define PFR_FLAG_ATOMIC 0x00000001
1967 #define PFR_FLAG_DUMMY 0x00000002
1968 #define PFR_FLAG_FEEDBACK 0x00000004
1969 #define PFR_FLAG_CLSTATS 0x00000008
1970 #define PFR_FLAG_ADDRSTOO 0x00000010
1971 #define PFR_FLAG_REPLACE 0x00000020
1972 #define PFR_FLAG_ALLRSETS 0x00000040
1973 #define PFR_FLAG_ALLMASK 0x0000007F
1974 #ifdef KERNEL
1975 #define PFR_FLAG_USERIOCTL 0x10000000
1976 #endif /* KERNEL */
1977
1978 struct pfioc_table {
1979 struct pfr_table pfrio_table;
1980 void *pfrio_buffer __attribute__((aligned(8)));
1981 int pfrio_esize __attribute__((aligned(8)));
1982 int pfrio_size;
1983 int pfrio_size2;
1984 int pfrio_nadd;
1985 int pfrio_ndel;
1986 int pfrio_nchange;
1987 int pfrio_flags;
1988 u_int32_t pfrio_ticket;
1989 };
1990 #define pfrio_exists pfrio_nadd
1991 #define pfrio_nzero pfrio_nadd
1992 #define pfrio_nmatch pfrio_nadd
1993 #define pfrio_naddr pfrio_size2
1994 #define pfrio_setflag pfrio_size2
1995 #define pfrio_clrflag pfrio_nadd
1996
1997 #ifdef KERNEL
1998 struct pfioc_table_32 {
1999 struct pfr_table pfrio_table;
2000 user32_addr_t pfrio_buffer __attribute__((aligned(8)));
2001 int pfrio_esize __attribute__((aligned(8)));
2002 int pfrio_size;
2003 int pfrio_size2;
2004 int pfrio_nadd;
2005 int pfrio_ndel;
2006 int pfrio_nchange;
2007 int pfrio_flags;
2008 u_int32_t pfrio_ticket;
2009 };
2010
2011 struct pfioc_table_64 {
2012 struct pfr_table pfrio_table;
2013 user64_addr_t pfrio_buffer __attribute__((aligned(8)));
2014 int pfrio_esize __attribute__((aligned(8)));
2015 int pfrio_size;
2016 int pfrio_size2;
2017 int pfrio_nadd;
2018 int pfrio_ndel;
2019 int pfrio_nchange;
2020 int pfrio_flags;
2021 u_int32_t pfrio_ticket;
2022 };
2023 #endif /* KERNEL */
2024
2025 struct pfioc_iface {
2026 char pfiio_name[IFNAMSIZ];
2027 void *pfiio_buffer __attribute__((aligned(8)));
2028 int pfiio_esize __attribute__((aligned(8)));
2029 int pfiio_size;
2030 int pfiio_nzero;
2031 int pfiio_flags;
2032 };
2033
2034 #ifdef KERNEL
2035 struct pfioc_iface_32 {
2036 char pfiio_name[IFNAMSIZ];
2037 user32_addr_t pfiio_buffer __attribute__((aligned(8)));
2038 int pfiio_esize __attribute__((aligned(8)));
2039 int pfiio_size;
2040 int pfiio_nzero;
2041 int pfiio_flags;
2042 };
2043
2044 struct pfioc_iface_64 {
2045 char pfiio_name[IFNAMSIZ];
2046 user64_addr_t pfiio_buffer __attribute__((aligned(8)));
2047 int pfiio_esize __attribute__((aligned(8)));
2048 int pfiio_size;
2049 int pfiio_nzero;
2050 int pfiio_flags;
2051 };
2052 #endif /* KERNEL */
2053
2054 struct pf_ifspeed {
2055 char ifname[IFNAMSIZ];
2056 u_int64_t baudrate;
2057 };
2058
2059 /*
2060 * ioctl operations
2061 */
2062
2063 #define DIOCSTART _IO ('D', 1)
2064 #define DIOCSTOP _IO ('D', 2)
2065 #define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule)
2066 #define DIOCGETSTARTERS _IOWR('D', 5, struct pfioc_tokens)
2067 #define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule)
2068 #define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule)
2069 #define DIOCSTARTREF _IOR ('D', 8, u_int64_t)
2070 #define DIOCSTOPREF _IOWR('D', 9, struct pfioc_remove_token)
2071 /* XXX cut 10 - 17 */
2072 #define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill)
2073 #define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state)
2074 #define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if)
2075 #define DIOCGETSTATUS _IOWR('D', 21, struct pf_status)
2076 #define DIOCCLRSTATUS _IO ('D', 22)
2077 #define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook)
2078 #define DIOCSETDEBUG _IOWR('D', 24, u_int32_t)
2079 #define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states)
2080 #define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule)
2081 #define DIOCINSERTRULE _IOWR('D', 27, struct pfioc_rule)
2082 #define DIOCDELETERULE _IOWR('D', 28, struct pfioc_rule)
2083 #define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm)
2084 #define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm)
2085 #define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state)
2086 #define DIOCCLRRULECTRS _IO ('D', 38)
2087 #define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit)
2088 #define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit)
2089 #define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill)
2090 #define DIOCSTARTALTQ _IO ('D', 42)
2091 #define DIOCSTOPALTQ _IO ('D', 43)
2092 #define DIOCADDALTQ _IOWR('D', 45, struct pfioc_altq)
2093 #define DIOCGETALTQS _IOWR('D', 47, struct pfioc_altq)
2094 #define DIOCGETALTQ _IOWR('D', 48, struct pfioc_altq)
2095 #define DIOCCHANGEALTQ _IOWR('D', 49, struct pfioc_altq)
2096 #define DIOCGETQSTATS _IOWR('D', 50, struct pfioc_qstats)
2097 #define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr)
2098 #define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr)
2099 #define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr)
2100 #define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr)
2101 #define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr)
2102 /* XXX cut 55 - 57 */
2103 #define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset)
2104 #define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset)
2105 #define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table)
2106 #define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table)
2107 #define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table)
2108 #define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table)
2109 #define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table)
2110 #define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table)
2111 #define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table)
2112 #define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table)
2113 #define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table)
2114 #define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table)
2115 #define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table)
2116 #define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table)
2117 #define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table)
2118 #define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table)
2119 #define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table)
2120 #define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table)
2121 #define DIOCOSFPFLUSH _IO('D', 78)
2122 #define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl)
2123 #define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl)
2124 #define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans)
2125 #define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans)
2126 #define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans)
2127 #define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes)
2128 #define DIOCCLRSRCNODES _IO('D', 85)
2129 #define DIOCSETHOSTID _IOWR('D', 86, u_int32_t)
2130 #define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface)
2131 #define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface)
2132 #define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface)
2133 #define DIOCKILLSRCNODES _IOWR('D', 91, struct pfioc_src_node_kill)
2134 #define DIOCGIFSPEED _IOWR('D', 92, struct pf_ifspeed)
2135
2136 #ifdef KERNEL
2137 RB_HEAD(pf_src_tree, pf_src_node);
2138 RB_PROTOTYPE_SC(__private_extern__, pf_src_tree, pf_src_node, entry,
2139 pf_src_compare);
2140 extern struct pf_src_tree tree_src_tracking;
2141
2142 RB_HEAD(pf_state_tree_id, pf_state);
2143 RB_PROTOTYPE_SC(__private_extern__, pf_state_tree_id, pf_state,
2144 entry_id, pf_state_compare_id);
2145 extern struct pf_state_tree_id tree_id;
2146 extern struct pf_state_queue state_list;
2147
2148 TAILQ_HEAD(pf_poolqueue, pf_pool);
2149 extern struct pf_poolqueue pf_pools[2];
2150 extern struct pf_palist pf_pabuf;
2151 extern u_int32_t ticket_pabuf;
2152 #if PF_ALTQ
2153 TAILQ_HEAD(pf_altqqueue, pf_altq);
2154 extern struct pf_altqqueue pf_altqs[2];
2155 extern u_int32_t ticket_altqs_active;
2156 extern u_int32_t ticket_altqs_inactive;
2157 extern int altqs_inactive_open;
2158 extern struct pf_altqqueue *pf_altqs_active;
2159 extern struct pf_altqqueue *pf_altqs_inactive;
2160 #endif /* PF_ALTQ */
2161 extern struct pf_poolqueue *pf_pools_active;
2162 extern struct pf_poolqueue *pf_pools_inactive;
2163
2164 __private_extern__ int pf_tbladdr_setup(struct pf_ruleset *,
2165 struct pf_addr_wrap *);
2166 __private_extern__ void pf_tbladdr_remove(struct pf_addr_wrap *);
2167 __private_extern__ void pf_tbladdr_copyout(struct pf_addr_wrap *);
2168 __private_extern__ void pf_calc_skip_steps(struct pf_rulequeue *);
2169 __private_extern__ u_int32_t pf_calc_state_key_flowhash(struct pf_state_key *);
2170
2171 extern struct pool pf_src_tree_pl, pf_rule_pl;
2172 extern struct pool pf_state_pl, pf_state_key_pl, pf_pooladdr_pl;
2173 extern struct pool pf_state_scrub_pl;
2174 #if PF_ALTQ
2175 extern struct pool pf_altq_pl;
2176 #endif /* PF_ALTQ */
2177 extern struct pool pf_app_state_pl;
2178
2179 extern struct thread *pf_purge_thread;
2180
2181 __private_extern__ void pfinit(void);
2182 __private_extern__ void pf_purge_thread_fn(void *, wait_result_t);
2183 __private_extern__ void pf_purge_expired_src_nodes(void);
2184 __private_extern__ void pf_purge_expired_states(u_int32_t);
2185 __private_extern__ void pf_unlink_state(struct pf_state *);
2186 __private_extern__ void pf_free_state(struct pf_state *);
2187 __private_extern__ int pf_insert_state(struct pfi_kif *, struct pf_state *);
2188 __private_extern__ int pf_insert_src_node(struct pf_src_node **,
2189 struct pf_rule *, struct pf_addr *, sa_family_t);
2190 __private_extern__ void pf_src_tree_remove_state(struct pf_state *);
2191 __private_extern__ struct pf_state *pf_find_state_byid(struct pf_state_cmp *);
2192 __private_extern__ struct pf_state *pf_find_state_all(struct pf_state_key_cmp *,
2193 u_int, int *);
2194 __private_extern__ void pf_print_state(struct pf_state *);
2195 __private_extern__ void pf_print_flags(u_int8_t);
2196 __private_extern__ u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t,
2197 u_int8_t);
2198
2199 extern struct ifnet *sync_ifp;
2200 extern struct pf_rule pf_default_rule;
2201 __private_extern__ void pf_addrcpy(struct pf_addr *, struct pf_addr *,
2202 u_int8_t);
2203 __private_extern__ void pf_rm_rule(struct pf_rulequeue *, struct pf_rule *);
2204
2205 struct ip_fw_args;
2206 #if INET
2207 __private_extern__ int pf_test(int, struct ifnet *, struct mbuf **,
2208 struct ether_header *, struct ip_fw_args *);
2209 #endif /* INET */
2210
2211 #if INET6
2212 __private_extern__ int pf_test6(int, struct ifnet *, struct mbuf **,
2213 struct ether_header *, struct ip_fw_args *);
2214 __private_extern__ void pf_poolmask(struct pf_addr *, struct pf_addr *,
2215 struct pf_addr *, struct pf_addr *, u_int8_t);
2216 __private_extern__ void pf_addr_inc(struct pf_addr *, sa_family_t);
2217 #endif /* INET6 */
2218
2219 __private_extern__ struct mbuf *pf_lazy_makewritable(struct pf_pdesc *,
2220 struct mbuf *, int);
2221 __private_extern__ void *pf_pull_hdr(struct mbuf *, int, void *, int,
2222 u_short *, u_short *, sa_family_t);
2223 __private_extern__ void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t);
2224 __private_extern__ int pflog_packet(struct pfi_kif *, struct mbuf *,
2225 sa_family_t, u_int8_t, u_int8_t, struct pf_rule *, struct pf_rule *,
2226 struct pf_ruleset *, struct pf_pdesc *);
2227 __private_extern__ int pf_match_addr(u_int8_t, struct pf_addr *,
2228 struct pf_addr *, struct pf_addr *, sa_family_t);
2229 __private_extern__ int pf_match_addr_range(struct pf_addr *, struct pf_addr *,
2230 struct pf_addr *, sa_family_t);
2231 __private_extern__ int pf_match(u_int8_t, u_int32_t, u_int32_t, u_int32_t);
2232 __private_extern__ int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t);
2233 __private_extern__ int pf_match_xport(u_int8_t, u_int8_t, union pf_rule_xport *,
2234 union pf_state_xport *);
2235 __private_extern__ int pf_match_uid(u_int8_t, uid_t, uid_t, uid_t);
2236 __private_extern__ int pf_match_gid(u_int8_t, gid_t, gid_t, gid_t);
2237
2238 __private_extern__ void pf_normalize_init(void);
2239 __private_extern__ int pf_normalize_isempty(void);
2240 __private_extern__ int pf_normalize_ip(struct mbuf **, int, struct pfi_kif *,
2241 u_short *, struct pf_pdesc *);
2242 __private_extern__ int pf_normalize_ip6(struct mbuf **, int, struct pfi_kif *,
2243 u_short *, struct pf_pdesc *);
2244 __private_extern__ int pf_normalize_tcp(int, struct pfi_kif *, struct mbuf *,
2245 int, int, void *, struct pf_pdesc *);
2246 __private_extern__ void pf_normalize_tcp_cleanup(struct pf_state *);
2247 __private_extern__ int pf_normalize_tcp_init(struct mbuf *, int,
2248 struct pf_pdesc *, struct tcphdr *, struct pf_state_peer *,
2249 struct pf_state_peer *);
2250 __private_extern__ int pf_normalize_tcp_stateful(struct mbuf *, int,
2251 struct pf_pdesc *, u_short *, struct tcphdr *, struct pf_state *,
2252 struct pf_state_peer *, struct pf_state_peer *, int *);
2253 __private_extern__ u_int64_t pf_state_expires(const struct pf_state *);
2254 __private_extern__ void pf_purge_expired_fragments(void);
2255 __private_extern__ int pf_routable(struct pf_addr *addr, sa_family_t af,
2256 struct pfi_kif *);
2257 __private_extern__ int pf_rtlabel_match(struct pf_addr *, sa_family_t,
2258 struct pf_addr_wrap *);
2259 __private_extern__ int pf_socket_lookup(int, struct pf_pdesc *);
2260 __private_extern__ struct pf_state_key *pf_alloc_state_key(struct pf_state *,
2261 struct pf_state_key *);
2262 __private_extern__ void pfr_initialize(void);
2263 __private_extern__ int pfr_match_addr(struct pfr_ktable *, struct pf_addr *,
2264 sa_family_t);
2265 __private_extern__ void pfr_update_stats(struct pfr_ktable *, struct pf_addr *,
2266 sa_family_t, u_int64_t, int, int, int);
2267 __private_extern__ int pfr_pool_get(struct pfr_ktable *, int *,
2268 struct pf_addr *, struct pf_addr **, struct pf_addr **, sa_family_t);
2269 __private_extern__ void pfr_dynaddr_update(struct pfr_ktable *,
2270 struct pfi_dynaddr *);
2271 __private_extern__ void pfr_table_copyin_cleanup(struct pfr_table *);
2272 __private_extern__ struct pfr_ktable *pfr_attach_table(struct pf_ruleset *,
2273 char *);
2274 __private_extern__ void pfr_detach_table(struct pfr_ktable *);
2275 __private_extern__ int pfr_clr_tables(struct pfr_table *, int *, int);
2276 __private_extern__ int pfr_add_tables(user_addr_t, int, int *, int);
2277 __private_extern__ int pfr_del_tables(user_addr_t, int, int *, int);
2278 __private_extern__ int pfr_get_tables(struct pfr_table *, user_addr_t,
2279 int *, int);
2280 __private_extern__ int pfr_get_tstats(struct pfr_table *, user_addr_t,
2281 int *, int);
2282 __private_extern__ int pfr_clr_tstats(user_addr_t, int, int *, int);
2283 __private_extern__ int pfr_set_tflags(user_addr_t, int, int, int, int *,
2284 int *, int);
2285 __private_extern__ int pfr_clr_addrs(struct pfr_table *, int *, int);
2286 __private_extern__ int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *,
2287 u_int64_t);
2288 __private_extern__ int pfr_add_addrs(struct pfr_table *, user_addr_t,
2289 int, int *, int);
2290 __private_extern__ int pfr_del_addrs(struct pfr_table *, user_addr_t,
2291 int, int *, int);
2292 __private_extern__ int pfr_set_addrs(struct pfr_table *, user_addr_t,
2293 int, int *, int *, int *, int *, int, u_int32_t);
2294 __private_extern__ int pfr_get_addrs(struct pfr_table *, user_addr_t,
2295 int *, int);
2296 __private_extern__ int pfr_get_astats(struct pfr_table *, user_addr_t,
2297 int *, int);
2298 __private_extern__ int pfr_clr_astats(struct pfr_table *, user_addr_t,
2299 int, int *, int);
2300 __private_extern__ int pfr_tst_addrs(struct pfr_table *, user_addr_t,
2301 int, int *, int);
2302 __private_extern__ int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *,
2303 int);
2304 __private_extern__ int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *,
2305 int);
2306 __private_extern__ int pfr_ina_commit(struct pfr_table *, u_int32_t, int *,
2307 int *, int);
2308 __private_extern__ int pfr_ina_define(struct pfr_table *, user_addr_t,
2309 int, int *, int *, u_int32_t, int);
2310
2311 extern struct pfi_kif *pfi_all;
2312
2313 __private_extern__ void pfi_initialize(void);
2314 __private_extern__ struct pfi_kif *pfi_kif_get(const char *);
2315 __private_extern__ void pfi_kif_ref(struct pfi_kif *, enum pfi_kif_refs);
2316 __private_extern__ void pfi_kif_unref(struct pfi_kif *, enum pfi_kif_refs);
2317 __private_extern__ int pfi_kif_match(struct pfi_kif *, struct pfi_kif *);
2318 __private_extern__ void pfi_attach_ifnet(struct ifnet *);
2319 __private_extern__ void pfi_detach_ifnet(struct ifnet *);
2320 __private_extern__ int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *,
2321 sa_family_t);
2322 __private_extern__ int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t);
2323 __private_extern__ void pfi_dynaddr_remove(struct pf_addr_wrap *);
2324 __private_extern__ void pfi_dynaddr_copyout(struct pf_addr_wrap *);
2325 __private_extern__ void pfi_update_status(const char *, struct pf_status *);
2326 __private_extern__ int pfi_get_ifaces(const char *, user_addr_t, int *);
2327 __private_extern__ int pfi_set_flags(const char *, int);
2328 __private_extern__ int pfi_clear_flags(const char *, int);
2329
2330 __private_extern__ u_int16_t pf_tagname2tag(char *);
2331 __private_extern__ void pf_tag2tagname(u_int16_t, char *);
2332 __private_extern__ void pf_tag_ref(u_int16_t);
2333 __private_extern__ void pf_tag_unref(u_int16_t);
2334 __private_extern__ int pf_tag_packet(struct mbuf *, struct pf_mtag *,
2335 int, unsigned int, struct pf_pdesc *);
2336 __private_extern__ void pf_step_into_anchor(int *, struct pf_ruleset **, int,
2337 struct pf_rule **, struct pf_rule **, int *);
2338 __private_extern__ int pf_step_out_of_anchor(int *, struct pf_ruleset **, int,
2339 struct pf_rule **, struct pf_rule **, int *);
2340 __private_extern__ u_int32_t pf_qname2qid(char *);
2341 __private_extern__ void pf_qid2qname(u_int32_t, char *);
2342 __private_extern__ void pf_qid_unref(u_int32_t);
2343
2344 extern struct pf_status pf_status;
2345 extern struct pool pf_frent_pl, pf_frag_pl;
2346
2347 struct pf_pool_limit {
2348 void *pp;
2349 unsigned limit;
2350 };
2351 extern struct pf_pool_limit pf_pool_limits[PF_LIMIT_MAX];
2352
2353 __private_extern__ int pf_af_hook(struct ifnet *, struct mbuf **,
2354 struct mbuf **, unsigned int, int, struct ip_fw_args *);
2355 __private_extern__ int pf_ifaddr_hook(struct ifnet *);
2356 __private_extern__ void pf_ifnet_hook(struct ifnet *, int);
2357
2358 /*
2359 * The following are defined with "private extern" storage class for
2360 * kernel, and "extern" for user-space.
2361 */
2362 extern struct pf_anchor_global pf_anchors;
2363 extern struct pf_anchor pf_main_anchor;
2364 #define pf_main_ruleset pf_main_anchor.ruleset
2365
2366 extern int pf_is_enabled;
2367 #define PF_IS_ENABLED (pf_is_enabled != 0)
2368 extern u_int32_t pf_hash_seed;
2369
2370 #if PF_ALTQ
2371 extern u_int32_t altq_allowed;
2372 #endif /* PF_ALTQ */
2373
2374 /* these ruleset functions can be linked into userland programs (pfctl) */
2375 __private_extern__ int pf_get_ruleset_number(u_int8_t);
2376 __private_extern__ void pf_init_ruleset(struct pf_ruleset *);
2377 __private_extern__ int pf_anchor_setup(struct pf_rule *,
2378 const struct pf_ruleset *, const char *);
2379 __private_extern__ int pf_anchor_copyout(const struct pf_ruleset *,
2380 const struct pf_rule *, struct pfioc_rule *);
2381 __private_extern__ void pf_anchor_remove(struct pf_rule *);
2382 __private_extern__ void pf_remove_if_empty_ruleset(struct pf_ruleset *);
2383 __private_extern__ struct pf_anchor *pf_find_anchor(const char *);
2384 __private_extern__ struct pf_ruleset *pf_find_ruleset(const char *);
2385 __private_extern__ struct pf_ruleset *pf_find_ruleset_with_owner(const char *,
2386 const char *, int, int *);
2387 __private_extern__ struct pf_ruleset *pf_find_or_create_ruleset(const char *);
2388 __private_extern__ void pf_rs_initialize(void);
2389
2390 __private_extern__ int pf_osfp_add(struct pf_osfp_ioctl *);
2391 __private_extern__ struct pf_osfp_enlist *pf_osfp_fingerprint(struct pf_pdesc *,
2392 struct mbuf *, int, const struct tcphdr *);
2393 __private_extern__ struct pf_osfp_enlist *pf_osfp_fingerprint_hdr(
2394 const struct ip *, const struct ip6_hdr *, const struct tcphdr *);
2395 __private_extern__ void pf_osfp_flush(void);
2396 __private_extern__ int pf_osfp_get(struct pf_osfp_ioctl *);
2397 __private_extern__ void pf_osfp_initialize(void);
2398 __private_extern__ int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t);
2399 __private_extern__ struct pf_os_fingerprint *pf_osfp_validate(void);
2400 __private_extern__ struct pf_mtag *pf_find_mtag(struct mbuf *);
2401 __private_extern__ struct pf_mtag *pf_get_mtag(struct mbuf *);
2402 #else /* !KERNEL */
2403 extern struct pf_anchor_global pf_anchors;
2404 extern struct pf_anchor pf_main_anchor;
2405 #define pf_main_ruleset pf_main_anchor.ruleset
2406
2407 /* these ruleset functions can be linked into userland programs (pfctl) */
2408 extern int pf_get_ruleset_number(u_int8_t);
2409 extern void pf_init_ruleset(struct pf_ruleset *);
2410 extern int pf_anchor_setup(struct pf_rule *, const struct pf_ruleset *,
2411 const char *);
2412 extern int pf_anchor_copyout(const struct pf_ruleset *, const struct pf_rule *,
2413 struct pfioc_rule *);
2414 extern void pf_anchor_remove(struct pf_rule *);
2415 extern void pf_remove_if_empty_ruleset(struct pf_ruleset *);
2416 extern struct pf_anchor *pf_find_anchor(const char *);
2417 extern struct pf_ruleset *pf_find_ruleset(const char *);
2418 extern struct pf_ruleset *pf_find_ruleset_with_owner(const char *,
2419 const char *, int, int *);
2420 extern struct pf_ruleset *pf_find_or_create_ruleset(const char *);
2421 extern void pf_rs_initialize(void);
2422 #endif /* !KERNEL */
2423
2424 #ifdef __cplusplus
2425 }
2426 #endif
2427 #endif /* PF || !KERNEL */
2428 #endif /* PRIVATE */
2429 #endif /* _NET_PFVAR_H_ */
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