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1 /*
2 * Copyright (c) 2007-2019 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 * NAT64 - Copyright (c) 2010 Viagenie Inc. (http://www.viagenie.ca)
35 * All rights reserved.
36 *
37 * Redistribution and use in source and binary forms, with or without
38 * modification, are permitted provided that the following conditions
39 * are met:
40 *
41 * - Redistributions of source code must retain the above copyright
42 * notice, this list of conditions and the following disclaimer.
43 * - Redistributions in binary form must reproduce the above
44 * copyright notice, this list of conditions and the following
45 * disclaimer in the documentation and/or other materials provided
46 * with the distribution.
47 *
48 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
49 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
50 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
51 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
52 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
53 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
54 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
55 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
56 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
57 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
58 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
59 * POSSIBILITY OF SUCH DAMAGE.
60 *
61 */
62
63 #ifndef _NET_PFVAR_H_
64 #define _NET_PFVAR_H_
65
66 #ifdef PRIVATE
67 /*
68 * XXX
69 * XXX Private interfaces. Do not include this file; use pfctl(8) instead.
70 * XXX
71 */
72 #if PF || !defined(KERNEL)
73
74 #ifdef __cplusplus
75 extern "C" {
76 #endif
77
78 #include <stdbool.h>
79 #include <sys/param.h>
80 #include <sys/types.h>
81 #include <sys/queue.h>
82 #include <libkern/tree.h>
83
84 #include <net/radix.h>
85 #include <netinet/in.h>
86 #include <net/if_var.h>
87 #ifdef KERNEL
88 #include <kern/kern_types.h>
89 #include <kern/zalloc.h>
90 #include <kern/locks.h>
91
92 #include <machine/endian.h>
93 #include <sys/systm.h>
94 #include <net/pf_pbuf.h>
95
96
97 #if BYTE_ORDER == BIG_ENDIAN
98 #define htobe64(x) (x)
99 #else /* LITTLE ENDIAN */
100 #define htobe64(x) __DARWIN_OSSwapInt64(x)
101 #endif /* LITTLE_ENDIAN */
102
103 #define be64toh(x) htobe64(x)
104
105 extern lck_rw_t *pf_perim_lock;
106 extern lck_mtx_t *pf_lock;
107
108 struct pool {
109 struct zone *pool_zone; /* pointer to backend zone */
110 const char *pool_name; /* name of pool */
111 unsigned int pool_count; /* # of outstanding elements */
112 unsigned int pool_hiwat; /* high watermark */
113 unsigned int pool_limit; /* hard limit */
114 unsigned int pool_fails; /* # of failed allocs due to limit */
115 };
116
117 #define PR_NOWAIT FALSE
118 #define PR_WAITOK TRUE
119
120 __private_extern__ void pool_init(struct pool *, size_t, unsigned int,
121 unsigned int, int, const char *, void *);
122 __private_extern__ void pool_destroy(struct pool *);
123 __private_extern__ void pool_sethiwat(struct pool *, int);
124 __private_extern__ void pool_sethardlimit(struct pool *, int,
125 const char *, int);
126 __private_extern__ void *pool_get(struct pool *, int);
127 __private_extern__ void pool_put(struct pool *, void *);
128 __private_extern__ u_int64_t pf_time_second(void);
129 __private_extern__ u_int64_t pf_calendar_time_second(void);
130 #endif /* KERNEL */
131
132 union sockaddr_union {
133 struct sockaddr sa;
134 struct sockaddr_in sin;
135 struct sockaddr_in6 sin6;
136 };
137
138 #define PF_TCPS_PROXY_SRC ((TCP_NSTATES)+0)
139 #define PF_TCPS_PROXY_DST ((TCP_NSTATES)+1)
140
141 #define PF_MD5_DIGEST_LENGTH 16
142 #ifdef MD5_DIGEST_LENGTH
143 #if PF_MD5_DIGEST_LENGTH != MD5_DIGEST_LENGTH
144 #error
145 #endif /* PF_MD5_DIGEST_LENGTH != MD5_DIGEST_LENGTH */
146 #endif /* MD5_DIGEST_LENGTH */
147
148 #ifdef KERNEL
149 struct ip;
150 struct ip6_hdr;
151 struct tcphdr;
152 struct pf_grev1_hdr;
153 struct pf_esp_hdr;
154 #endif /* KERNEL */
155
156 #define PF_GRE_PPTP_VARIANT 0x01
157
158 enum { PF_INOUT, PF_IN, PF_OUT };
159 enum { PF_PASS, PF_DROP, PF_SCRUB, PF_NOSCRUB, PF_NAT, PF_NONAT,
160 PF_BINAT, PF_NOBINAT, PF_RDR, PF_NORDR, PF_SYNPROXY_DROP,
161 PF_DUMMYNET, PF_NODUMMYNET, PF_NAT64, PF_NONAT64 };
162 enum { PF_RULESET_SCRUB, PF_RULESET_FILTER, PF_RULESET_NAT,
163 PF_RULESET_BINAT, PF_RULESET_RDR, PF_RULESET_DUMMYNET,
164 PF_RULESET_MAX };
165 enum { PF_OP_NONE, PF_OP_IRG, PF_OP_EQ, PF_OP_NE, PF_OP_LT,
166 PF_OP_LE, PF_OP_GT, PF_OP_GE, PF_OP_XRG, PF_OP_RRG };
167 enum { PF_DEBUG_NONE, PF_DEBUG_URGENT, PF_DEBUG_MISC, PF_DEBUG_NOISY };
168 enum { PF_CHANGE_NONE, PF_CHANGE_ADD_HEAD, PF_CHANGE_ADD_TAIL,
169 PF_CHANGE_ADD_BEFORE, PF_CHANGE_ADD_AFTER,
170 PF_CHANGE_REMOVE, PF_CHANGE_GET_TICKET };
171 enum { PF_GET_NONE, PF_GET_CLR_CNTR };
172
173 /*
174 * Note about PFTM_*: real indices into pf_rule.timeout[] come before
175 * PFTM_MAX, special cases afterwards. See pf_state_expires().
176 */
177 enum { PFTM_TCP_FIRST_PACKET, PFTM_TCP_OPENING, PFTM_TCP_ESTABLISHED,
178 PFTM_TCP_CLOSING, PFTM_TCP_FIN_WAIT, PFTM_TCP_CLOSED,
179 PFTM_UDP_FIRST_PACKET, PFTM_UDP_SINGLE, PFTM_UDP_MULTIPLE,
180 PFTM_ICMP_FIRST_PACKET, PFTM_ICMP_ERROR_REPLY,
181 PFTM_GREv1_FIRST_PACKET, PFTM_GREv1_INITIATING,
182 PFTM_GREv1_ESTABLISHED, PFTM_ESP_FIRST_PACKET, PFTM_ESP_INITIATING,
183 PFTM_ESP_ESTABLISHED, PFTM_OTHER_FIRST_PACKET, PFTM_OTHER_SINGLE,
184 PFTM_OTHER_MULTIPLE, PFTM_FRAG, PFTM_INTERVAL,
185 PFTM_ADAPTIVE_START, PFTM_ADAPTIVE_END, PFTM_SRC_NODE,
186 PFTM_TS_DIFF, PFTM_MAX, PFTM_PURGE, PFTM_UNLINKED };
187
188 /* PFTM default values */
189 #define PFTM_TCP_FIRST_PACKET_VAL 120 /* First TCP packet */
190 #define PFTM_TCP_OPENING_VAL 30 /* No response yet */
191 #define PFTM_TCP_ESTABLISHED_VAL (24 * 60 * 60) /* Established */
192 #define PFTM_TCP_CLOSING_VAL (15 * 60) /* Half closed */
193 #define PFTM_TCP_FIN_WAIT_VAL 45 /* Got both FINs */
194 #define PFTM_TCP_CLOSED_VAL 90 /* Got a RST */
195 #define PFTM_UDP_FIRST_PACKET_VAL 60 /* First UDP packet */
196 #define PFTM_UDP_SINGLE_VAL 30 /* Unidirectional */
197 #define PFTM_UDP_MULTIPLE_VAL 60 /* Bidirectional */
198 #define PFTM_ICMP_FIRST_PACKET_VAL 20 /* First ICMP packet */
199 #define PFTM_ICMP_ERROR_REPLY_VAL 10 /* Got error response */
200 #define PFTM_GREv1_FIRST_PACKET_VAL 120
201 #define PFTM_GREv1_INITIATING_VAL 30
202 #define PFTM_GREv1_ESTABLISHED_VAL 1800
203 #define PFTM_ESP_FIRST_PACKET_VAL 120
204 #define PFTM_ESP_INITIATING_VAL 30
205 #define PFTM_ESP_ESTABLISHED_VAL 900
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 PF_LIMIT_APP_STATES,
217 PF_LIMIT_SRC_NODES, PF_LIMIT_FRAGS,
218 PF_LIMIT_TABLES, PF_LIMIT_TABLE_ENTRIES, PF_LIMIT_MAX };
219 #define PF_POOL_IDMASK 0x0f
220 enum { PF_POOL_NONE, PF_POOL_BITMASK, PF_POOL_RANDOM,
221 PF_POOL_SRCHASH, PF_POOL_ROUNDROBIN };
222 enum { PF_ADDR_ADDRMASK, PF_ADDR_NOROUTE, PF_ADDR_DYNIFTL,
223 PF_ADDR_TABLE, PF_ADDR_RTLABEL, PF_ADDR_URPFFAILED,
224 PF_ADDR_RANGE };
225 #define PF_POOL_TYPEMASK 0x0f
226 #define PF_POOL_STICKYADDR 0x20
227 #define PF_WSCALE_FLAG 0x80
228 #define PF_WSCALE_MASK 0x0f
229
230 #define PF_LOG 0x01
231 #define PF_LOG_ALL 0x02
232 #define PF_LOG_SOCKET_LOOKUP 0x04
233
234 struct pf_addr {
235 union {
236 struct in_addr _v4addr;
237 struct in6_addr _v6addr;
238 u_int8_t _addr8[16];
239 u_int16_t _addr16[8];
240 u_int32_t _addr32[4];
241 } pfa; /* 128-bit address */
242 #define v4addr pfa._v4addr
243 #define v6addr pfa._v6addr
244 #define addr8 pfa._addr8
245 #define addr16 pfa._addr16
246 #define addr32 pfa._addr32
247 };
248
249 #define PF_TABLE_NAME_SIZE 32
250
251 #define PFI_AFLAG_NETWORK 0x01
252 #define PFI_AFLAG_BROADCAST 0x02
253 #define PFI_AFLAG_PEER 0x04
254 #define PFI_AFLAG_MODEMASK 0x07
255 #define PFI_AFLAG_NOALIAS 0x08
256
257 #ifndef RTLABEL_LEN
258 #define RTLABEL_LEN 32
259 #endif
260
261 struct pf_addr_wrap {
262 union {
263 struct {
264 struct pf_addr addr;
265 struct pf_addr mask;
266 } a;
267 char ifname[IFNAMSIZ];
268 char tblname[PF_TABLE_NAME_SIZE];
269 char rtlabelname[RTLABEL_LEN];
270 u_int32_t rtlabel;
271 } v;
272 union {
273 #ifdef KERNEL
274 struct pfi_dynaddr *dyn __attribute__((aligned(8)));
275 struct pfr_ktable *tbl __attribute__((aligned(8)));
276 #else /* !KERNEL */
277 void *dyn __attribute__((aligned(8)));
278 void *tbl __attribute__((aligned(8)));
279 #endif /* !KERNEL */
280 int dyncnt __attribute__((aligned(8)));
281 int tblcnt __attribute__((aligned(8)));
282 } p __attribute__((aligned(8)));
283 u_int8_t type; /* PF_ADDR_* */
284 u_int8_t iflags; /* PFI_AFLAG_* */
285 };
286
287 struct pf_port_range {
288 u_int16_t port[2];
289 u_int8_t op;
290 };
291
292 union pf_rule_xport {
293 struct pf_port_range range;
294 u_int16_t call_id;
295 u_int32_t spi;
296 };
297
298 #ifdef KERNEL
299 struct pfi_dynaddr {
300 TAILQ_ENTRY(pfi_dynaddr) entry;
301 struct pf_addr pfid_addr4;
302 struct pf_addr pfid_mask4;
303 struct pf_addr pfid_addr6;
304 struct pf_addr pfid_mask6;
305 struct pfr_ktable *pfid_kt;
306 struct pfi_kif *pfid_kif;
307 void *pfid_hook_cookie;
308 uint8_t pfid_net; /* mask or 128 */
309 int pfid_acnt4; /* address count IPv4 */
310 int pfid_acnt6; /* address count IPv6 */
311 sa_family_t pfid_af; /* rule af */
312 u_int8_t pfid_iflags; /* PFI_AFLAG_* */
313 };
314
315 /*
316 * Address manipulation macros
317 */
318
319 #if INET
320 #endif /* INET */
321
322 #if !INET
323 #define PF_INET6_ONLY
324 #endif /* ! INET */
325
326 #if INET
327 #define PF_INET_INET6
328 #endif /* INET */
329
330 #else /* !KERNEL */
331
332 #define PF_INET_INET6
333
334 #endif /* !KERNEL */
335
336 /* Both IPv4 and IPv6 */
337 #ifdef PF_INET_INET6
338
339 #define PF_AEQ(a, b, c) \
340 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \
341 ((a)->addr32[3] == (b)->addr32[3] && \
342 (a)->addr32[2] == (b)->addr32[2] && \
343 (a)->addr32[1] == (b)->addr32[1] && \
344 (a)->addr32[0] == (b)->addr32[0])) \
345
346 #define PF_ANEQ(a, b, c) \
347 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \
348 ((a)->addr32[3] != (b)->addr32[3] || \
349 (a)->addr32[2] != (b)->addr32[2] || \
350 (a)->addr32[1] != (b)->addr32[1] || \
351 (a)->addr32[0] != (b)->addr32[0])) \
352
353 #define PF_ALEQ(a, b, c) \
354 ((c == AF_INET && (a)->addr32[0] <= (b)->addr32[0]) || \
355 ((a)->addr32[3] <= (b)->addr32[3] && \
356 (a)->addr32[2] <= (b)->addr32[2] && \
357 (a)->addr32[1] <= (b)->addr32[1] && \
358 (a)->addr32[0] <= (b)->addr32[0])) \
359
360 #define PF_AZERO(a, c) \
361 ((c == AF_INET && !(a)->addr32[0]) || \
362 (!(a)->addr32[0] && !(a)->addr32[1] && \
363 !(a)->addr32[2] && !(a)->addr32[3])) \
364
365 #define PF_MATCHA(n, a, m, b, f) \
366 pf_match_addr(n, a, m, b, f)
367
368 #define PF_ACPY(a, b, f) \
369 pf_addrcpy(a, b, f)
370
371 #define PF_AINC(a, f) \
372 pf_addr_inc(a, f)
373
374 #define PF_POOLMASK(a, b, c, d, f) \
375 pf_poolmask(a, b, c, d, f)
376
377 #else
378
379 /* Just IPv6 */
380
381 #ifdef PF_INET6_ONLY
382
383 #define PF_AEQ(a, b, c) \
384 ((a)->addr32[3] == (b)->addr32[3] && \
385 (a)->addr32[2] == (b)->addr32[2] && \
386 (a)->addr32[1] == (b)->addr32[1] && \
387 (a)->addr32[0] == (b)->addr32[0]) \
388
389 #define PF_ANEQ(a, b, c) \
390 ((a)->addr32[3] != (b)->addr32[3] || \
391 (a)->addr32[2] != (b)->addr32[2] || \
392 (a)->addr32[1] != (b)->addr32[1] || \
393 (a)->addr32[0] != (b)->addr32[0]) \
394
395 #define PF_ALEQ(a, b, c) \
396 ((a)->addr32[3] <= (b)->addr32[3] && \
397 (a)->addr32[2] <= (b)->addr32[2] && \
398 (a)->addr32[1] <= (b)->addr32[1] && \
399 (a)->addr32[0] <= (b)->addr32[0]) \
400
401 #define PF_AZERO(a, c) \
402 (!(a)->addr32[0] && \
403 !(a)->addr32[1] && \
404 !(a)->addr32[2] && \
405 !(a)->addr32[3]) \
406
407 #define PF_MATCHA(n, a, m, b, f) \
408 pf_match_addr(n, a, m, b, f)
409
410 #define PF_ACPY(a, b, f) \
411 pf_addrcpy(a, b, f)
412
413 #define PF_AINC(a, f) \
414 pf_addr_inc(a, f)
415
416 #define PF_POOLMASK(a, b, c, d, f) \
417 pf_poolmask(a, b, c, d, f)
418
419 #else
420
421 /* Just IPv4 */
422 #ifdef PF_INET_ONLY
423
424 #define PF_AEQ(a, b, c) \
425 ((a)->addr32[0] == (b)->addr32[0])
426
427 #define PF_ANEQ(a, b, c) \
428 ((a)->addr32[0] != (b)->addr32[0])
429
430 #define PF_ALEQ(a, b, c) \
431 ((a)->addr32[0] <= (b)->addr32[0])
432
433 #define PF_AZERO(a, c) \
434 (!(a)->addr32[0])
435
436 #define PF_MATCHA(n, a, m, b, f) \
437 pf_match_addr(n, a, m, b, f)
438
439 #define PF_ACPY(a, b, f) \
440 (a)->v4.s_addr = (b)->v4.s_addr
441
442 #define PF_AINC(a, f) \
443 do { \
444 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \
445 } while (0)
446
447 #define PF_POOLMASK(a, b, c, d, f) \
448 do { \
449 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \
450 (((c)->addr32[0] ^ 0xffffffff) & (d)->addr32[0]); \
451 } while (0)
452
453 #endif /* PF_INET_ONLY */
454 #endif /* PF_INET6_ONLY */
455 #endif /* PF_INET_INET6 */
456
457 #ifdef KERNEL
458 #define PF_MISMATCHAW(aw, x, af, neg, ifp) \
459 ( \
460 (((aw)->type == PF_ADDR_NOROUTE && \
461 pf_routable((x), (af), NULL)) || \
462 (((aw)->type == PF_ADDR_URPFFAILED && (ifp) != NULL && \
463 pf_routable((x), (af), (ifp))) || \
464 ((aw)->type == PF_ADDR_RTLABEL && \
465 !pf_rtlabel_match((x), (af), (aw))) || \
466 ((aw)->type == PF_ADDR_TABLE && \
467 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \
468 ((aw)->type == PF_ADDR_DYNIFTL && \
469 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \
470 ((aw)->type == PF_ADDR_RANGE && \
471 !pf_match_addr_range(&(aw)->v.a.addr, \
472 &(aw)->v.a.mask, (x), (af))) || \
473 ((aw)->type == PF_ADDR_ADDRMASK && \
474 !PF_AZERO(&(aw)->v.a.mask, (af)) && \
475 !PF_MATCHA(0, &(aw)->v.a.addr, \
476 &(aw)->v.a.mask, (x), (af))))) != \
477 (neg) \
478 )
479 #endif /* KERNEL */
480
481 struct pf_rule_uid {
482 uid_t uid[2];
483 u_int8_t op;
484 u_int8_t _pad[3];
485 };
486
487 struct pf_rule_gid {
488 uid_t gid[2];
489 u_int8_t op;
490 u_int8_t _pad[3];
491 };
492
493 struct pf_rule_addr {
494 struct pf_addr_wrap addr;
495 union pf_rule_xport xport;
496 u_int8_t neg;
497 };
498
499 struct pf_pooladdr {
500 struct pf_addr_wrap addr;
501 TAILQ_ENTRY(pf_pooladdr) entries;
502 #if !defined(__LP64__)
503 u_int32_t _pad[2];
504 #endif /* !__LP64__ */
505 char ifname[IFNAMSIZ];
506 #ifdef KERNEL
507 struct pfi_kif *kif __attribute__((aligned(8)));
508 #else /* !KERNEL */
509 void *kif __attribute__((aligned(8)));
510 #endif /* !KERNEL */
511 };
512
513 TAILQ_HEAD(pf_palist, pf_pooladdr);
514
515 struct pf_poolhashkey {
516 union {
517 u_int8_t key8[16];
518 u_int16_t key16[8];
519 u_int32_t key32[4];
520 } pfk; /* 128-bit hash key */
521 #define key8 pfk.key8
522 #define key16 pfk.key16
523 #define key32 pfk.key32
524 };
525
526 struct pf_pool {
527 struct pf_palist list;
528 #if !defined(__LP64__)
529 u_int32_t _pad[2];
530 #endif /* !__LP64__ */
531 #ifdef KERNEL
532 struct pf_pooladdr *cur __attribute__((aligned(8)));
533 #else /* !KERNEL */
534 void *cur __attribute__((aligned(8)));
535 #endif /* !KERNEL */
536 struct pf_poolhashkey key __attribute__((aligned(8)));
537 struct pf_addr counter;
538 int tblidx;
539 u_int16_t proxy_port[2];
540 u_int8_t port_op;
541 u_int8_t opts;
542 sa_family_t af;
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(pf_tcpopts_t) * 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 u_int64_t ticket;
694 #define PF_OWNER_NAME_SIZE 64
695 char owner[PF_OWNER_NAME_SIZE];
696 u_int32_t priority;
697
698 #ifdef KERNEL
699 struct pfi_kif *kif __attribute__((aligned(8)));
700 #else /* !KERNEL */
701 void *kif __attribute__((aligned(8)));
702 #endif /* !KERNEL */
703 struct pf_anchor *anchor __attribute__((aligned(8)));
704 #ifdef KERNEL
705 struct pfr_ktable *overload_tbl __attribute__((aligned(8)));
706 #else /* !KERNEL */
707 void *overload_tbl __attribute__((aligned(8)));
708 #endif /* !KERNEL */
709
710 pf_osfp_t os_fingerprint __attribute__((aligned(8)));
711
712 unsigned int rtableid;
713 u_int32_t timeout[PFTM_MAX];
714 u_int32_t states;
715 u_int32_t max_states;
716 u_int32_t src_nodes;
717 u_int32_t max_src_nodes;
718 u_int32_t max_src_states;
719 u_int32_t max_src_conn;
720 struct {
721 u_int32_t limit;
722 u_int32_t seconds;
723 } max_src_conn_rate;
724 u_int32_t qid;
725 u_int32_t pqid;
726 u_int32_t rt_listid;
727 u_int32_t nr;
728 u_int32_t prob;
729 uid_t cuid;
730 pid_t cpid;
731
732 u_int16_t return_icmp;
733 u_int16_t return_icmp6;
734 u_int16_t max_mss;
735 u_int16_t tag;
736 u_int16_t match_tag;
737
738 struct pf_rule_uid uid;
739 struct pf_rule_gid gid;
740
741 u_int32_t rule_flag;
742 u_int8_t action;
743 u_int8_t direction;
744 u_int8_t log;
745 u_int8_t logif;
746 u_int8_t quick;
747 u_int8_t ifnot;
748 u_int8_t match_tag_not;
749 u_int8_t natpass;
750
751 #define PF_STATE_NORMAL 0x1
752 #define PF_STATE_MODULATE 0x2
753 #define PF_STATE_SYNPROXY 0x3
754 u_int8_t keep_state;
755 sa_family_t af;
756 u_int8_t proto;
757 u_int8_t type;
758 u_int8_t code;
759 u_int8_t flags;
760 u_int8_t flagset;
761 u_int8_t min_ttl;
762 u_int8_t allow_opts;
763 u_int8_t rt;
764 u_int8_t return_ttl;
765
766 /* service class categories */
767 #define SCIDX_MASK 0x0f
768 #define SC_BE 0x10
769 #define SC_BK_SYS 0x11
770 #define SC_BK 0x12
771 #define SC_RD 0x13
772 #define SC_OAM 0x14
773 #define SC_AV 0x15
774 #define SC_RV 0x16
775 #define SC_VI 0x17
776 #define SC_SIG 0x17
777 #define SC_VO 0x18
778 #define SC_CTL 0x19
779
780 /* diffserve code points */
781 #define DSCP_MASK 0xfc
782 #define DSCP_CUMASK 0x03
783 #define DSCP_EF 0xb8
784 #define DSCP_AF11 0x28
785 #define DSCP_AF12 0x30
786 #define DSCP_AF13 0x38
787 #define DSCP_AF21 0x48
788 #define DSCP_AF22 0x50
789 #define DSCP_AF23 0x58
790 #define DSCP_AF31 0x68
791 #define DSCP_AF32 0x70
792 #define DSCP_AF33 0x78
793 #define DSCP_AF41 0x88
794 #define DSCP_AF42 0x90
795 #define DSCP_AF43 0x98
796 #define AF_CLASSMASK 0xe0
797 #define AF_DROPPRECMASK 0x18
798 u_int8_t tos;
799 u_int8_t anchor_relative;
800 u_int8_t anchor_wildcard;
801
802 #define PF_FLUSH 0x01
803 #define PF_FLUSH_GLOBAL 0x02
804 u_int8_t flush;
805
806 u_int8_t proto_variant;
807 u_int8_t extfilter; /* Filter mode [PF_EXTFILTER_xxx] */
808 u_int8_t extmap; /* Mapping mode [PF_EXTMAP_xxx] */
809 u_int32_t dnpipe;
810 u_int32_t dntype;
811 };
812
813 /* pf device identifiers */
814 #define PFDEV_PF 0
815 #define PFDEV_PFM 1
816 #define PFDEV_MAX 2
817
818 /* rule flags */
819 #define PFRULE_DROP 0x0000
820 #define PFRULE_RETURNRST 0x0001
821 #define PFRULE_FRAGMENT 0x0002
822 #define PFRULE_RETURNICMP 0x0004
823 #define PFRULE_RETURN 0x0008
824 #define PFRULE_NOSYNC 0x0010
825 #define PFRULE_SRCTRACK 0x0020 /* track source states */
826 #define PFRULE_RULESRCTRACK 0x0040 /* per rule */
827
828 /* scrub flags */
829 #define PFRULE_NODF 0x0100
830 #define PFRULE_FRAGCROP 0x0200 /* non-buffering frag cache */
831 #define PFRULE_FRAGDROP 0x0400 /* drop funny fragments */
832 #define PFRULE_RANDOMID 0x0800
833 #define PFRULE_REASSEMBLE_TCP 0x1000
834
835 /* rule flags for TOS/DSCP/service class differentiation */
836 #define PFRULE_TOS 0x2000
837 #define PFRULE_DSCP 0x4000
838 #define PFRULE_SC 0x8000
839
840 /* rule flags again */
841 #define PFRULE_IFBOUND 0x00010000 /* if-bound */
842 #define PFRULE_PFM 0x00020000 /* created by pfm device */
843
844 #define PFSTATE_HIWAT 10000 /* default state table size */
845 #define PFSTATE_ADAPT_START 6000 /* default adaptive timeout start */
846 #define PFSTATE_ADAPT_END 12000 /* default adaptive timeout end */
847
848 #define PFAPPSTATE_HIWAT 10000 /* default same as state table */
849
850 /* PF reserved special purpose tags */
851 #define PF_TAG_NAME_SYSTEM_SERVICE "com.apple.pf.system_service_tag"
852 #define PF_TAG_NAME_STACK_DROP "com.apple.pf.stack_drop_tag"
853
854 enum pf_extmap {
855 PF_EXTMAP_APD = 1, /* Address-port-dependent mapping */
856 PF_EXTMAP_AD, /* Address-dependent mapping */
857 PF_EXTMAP_EI /* Endpoint-independent mapping */
858 };
859
860 enum pf_extfilter {
861 PF_EXTFILTER_APD = 1, /* Address-port-dependent filtering */
862 PF_EXTFILTER_AD, /* Address-dependent filtering */
863 PF_EXTFILTER_EI /* Endpoint-independent filtering */
864 };
865
866 struct pf_threshold {
867 u_int32_t limit;
868 #define PF_THRESHOLD_MULT 1000
869 #define PF_THRESHOLD_MAX 0xffffffff / PF_THRESHOLD_MULT
870 u_int32_t seconds;
871 u_int32_t count;
872 u_int32_t last;
873 };
874
875 struct pf_src_node {
876 RB_ENTRY(pf_src_node) entry;
877 struct pf_addr addr;
878 struct pf_addr raddr;
879 union pf_rule_ptr rule;
880 #ifdef KERNEL
881 struct pfi_kif *kif;
882 #else /* !KERNEL */
883 void *kif;
884 #endif /* !KERNEL */
885 u_int64_t bytes[2];
886 u_int64_t packets[2];
887 u_int32_t states;
888 u_int32_t conn;
889 struct pf_threshold conn_rate;
890 u_int64_t creation;
891 u_int64_t expire;
892 sa_family_t af;
893 u_int8_t ruletype;
894 };
895
896 #define PFSNODE_HIWAT 10000 /* default source node table size */
897
898 #ifdef KERNEL
899 struct pf_state_scrub {
900 struct timeval pfss_last; /* time received last packet */
901 u_int32_t pfss_tsecr; /* last echoed timestamp */
902 u_int32_t pfss_tsval; /* largest timestamp */
903 u_int32_t pfss_tsval0; /* original timestamp */
904 u_int16_t pfss_flags;
905 #define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */
906 #define PFSS_PAWS 0x0010 /* stricter PAWS checks */
907 #define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */
908 #define PFSS_DATA_TS 0x0040 /* timestamp on data packets */
909 #define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */
910 u_int8_t pfss_ttl; /* stashed TTL */
911 u_int8_t pad;
912 u_int32_t pfss_ts_mod; /* timestamp modulation */
913 };
914 #endif /* KERNEL */
915
916 union pf_state_xport {
917 u_int16_t port;
918 u_int16_t call_id;
919 u_int32_t spi;
920 };
921
922 struct pf_state_host {
923 struct pf_addr addr;
924 union pf_state_xport xport;
925 };
926
927 #ifdef KERNEL
928 struct pf_state_peer {
929 u_int32_t seqlo; /* Max sequence number sent */
930 u_int32_t seqhi; /* Max the other end ACKd + win */
931 u_int32_t seqdiff; /* Sequence number modulator */
932 u_int16_t max_win; /* largest window (pre scaling) */
933 u_int8_t state; /* active state level */
934 u_int8_t wscale; /* window scaling factor */
935 u_int16_t mss; /* Maximum segment size option */
936 u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */
937 struct pf_state_scrub *scrub; /* state is scrubbed */
938 u_int8_t pad[3];
939 };
940
941 TAILQ_HEAD(pf_state_queue, pf_state);
942
943 struct pf_state;
944 struct pf_pdesc;
945 struct pf_app_state;
946
947 typedef void (*pf_app_handler)(struct pf_state *, int, int, struct pf_pdesc *,
948 struct pfi_kif *);
949
950 typedef int (*pf_app_compare)(struct pf_app_state *, struct pf_app_state *);
951
952 struct pf_pptp_state {
953 struct pf_state *grev1_state;
954 };
955
956 struct pf_grev1_state {
957 struct pf_state *pptp_state;
958 };
959
960 struct pf_ike_state {
961 u_int64_t cookie;
962 };
963
964 struct pf_app_state {
965 pf_app_handler handler;
966 pf_app_compare compare_lan_ext;
967 pf_app_compare compare_ext_gwy;
968 union {
969 struct pf_pptp_state pptp;
970 struct pf_grev1_state grev1;
971 struct pf_ike_state ike;
972 } u;
973 };
974
975 /* keep synced with struct pf_state, used in RB_FIND */
976 struct pf_state_key_cmp {
977 struct pf_state_host lan;
978 struct pf_state_host gwy;
979 struct pf_state_host ext_lan;
980 struct pf_state_host ext_gwy;
981 sa_family_t af_lan;
982 sa_family_t af_gwy;
983 u_int8_t proto;
984 u_int8_t direction;
985 u_int8_t proto_variant;
986 struct pf_app_state *app_state;
987 };
988
989 TAILQ_HEAD(pf_statelist, pf_state);
990
991 struct pf_state_key {
992 struct pf_state_host lan;
993 struct pf_state_host gwy;
994 struct pf_state_host ext_lan;
995 struct pf_state_host ext_gwy;
996 sa_family_t af_lan;
997 sa_family_t af_gwy;
998 u_int8_t proto;
999 u_int8_t direction;
1000 u_int8_t proto_variant;
1001 struct pf_app_state *app_state;
1002 u_int32_t flowsrc;
1003 u_int32_t flowhash;
1004
1005 RB_ENTRY(pf_state_key) entry_lan_ext;
1006 RB_ENTRY(pf_state_key) entry_ext_gwy;
1007 struct pf_statelist states;
1008 u_int32_t refcnt;
1009 };
1010
1011
1012 /* keep synced with struct pf_state, used in RB_FIND */
1013 struct pf_state_cmp {
1014 u_int64_t id;
1015 u_int32_t creatorid;
1016 u_int32_t pad;
1017 };
1018
1019 /* flowhash key (12-bytes multiple for performance) */
1020 struct pf_flowhash_key {
1021 struct pf_state_host ap1; /* address+port blob 1 */
1022 struct pf_state_host ap2; /* address+port blob 2 */
1023 u_int32_t af;
1024 u_int32_t proto;
1025 };
1026 #endif /* KERNEL */
1027
1028 struct hook_desc;
1029 TAILQ_HEAD(hook_desc_head, hook_desc);
1030
1031 #ifdef KERNEL
1032 struct pf_state {
1033 u_int64_t id;
1034 u_int32_t creatorid;
1035 u_int32_t pad;
1036
1037 TAILQ_ENTRY(pf_state) entry_list;
1038 TAILQ_ENTRY(pf_state) next;
1039 RB_ENTRY(pf_state) entry_id;
1040 struct pf_state_peer src;
1041 struct pf_state_peer dst;
1042 union pf_rule_ptr rule;
1043 union pf_rule_ptr anchor;
1044 union pf_rule_ptr nat_rule;
1045 struct pf_addr rt_addr;
1046 struct hook_desc_head unlink_hooks;
1047 struct pf_state_key *state_key;
1048 struct pfi_kif *kif;
1049 struct pfi_kif *rt_kif;
1050 struct pf_src_node *src_node;
1051 struct pf_src_node *nat_src_node;
1052 u_int64_t packets[2];
1053 u_int64_t bytes[2];
1054 u_int64_t creation;
1055 u_int64_t expire;
1056 u_int64_t pfsync_time;
1057 u_int16_t tag;
1058 u_int8_t log;
1059 u_int8_t allow_opts;
1060 u_int8_t timeout;
1061 u_int8_t sync_flags;
1062 };
1063 #endif /* KERNEL */
1064
1065 #define PFSTATE_NOSYNC 0x01
1066 #define PFSTATE_FROMSYNC 0x02
1067 #define PFSTATE_STALE 0x04
1068
1069 #define __packed __attribute__((__packed__))
1070
1071 /*
1072 * Unified state structures for pulling states out of the kernel
1073 * used by pfsync(4) and the pf(4) ioctl.
1074 */
1075 struct pfsync_state_scrub {
1076 u_int16_t pfss_flags;
1077 u_int8_t pfss_ttl; /* stashed TTL */
1078 #define PFSYNC_SCRUB_FLAG_VALID 0x01
1079 u_int8_t scrub_flag;
1080 u_int32_t pfss_ts_mod; /* timestamp modulation */
1081 } __packed;
1082
1083 struct pfsync_state_host {
1084 struct pf_addr addr;
1085 union pf_state_xport xport;
1086 u_int16_t pad[2];
1087 } __packed;
1088
1089 struct pfsync_state_peer {
1090 struct pfsync_state_scrub scrub; /* state is scrubbed */
1091 u_int32_t seqlo; /* Max sequence number sent */
1092 u_int32_t seqhi; /* Max the other end ACKd + win */
1093 u_int32_t seqdiff; /* Sequence number modulator */
1094 u_int16_t max_win; /* largest window (pre scaling) */
1095 u_int16_t mss; /* Maximum segment size option */
1096 u_int8_t state; /* active state level */
1097 u_int8_t wscale; /* window scaling factor */
1098 u_int8_t pad[6];
1099 } __packed;
1100
1101 struct pfsync_state {
1102 u_int32_t id[2];
1103 char ifname[IFNAMSIZ];
1104 struct pfsync_state_host lan;
1105 struct pfsync_state_host gwy;
1106 struct pfsync_state_host ext_lan;
1107 struct pfsync_state_host ext_gwy;
1108 struct pfsync_state_peer src;
1109 struct pfsync_state_peer dst;
1110 struct pf_addr rt_addr;
1111 struct hook_desc_head unlink_hooks;
1112 #if !defined(__LP64__)
1113 u_int32_t _pad[2];
1114 #endif /* !__LP64__ */
1115 u_int32_t rule;
1116 u_int32_t anchor;
1117 u_int32_t nat_rule;
1118 u_int64_t creation;
1119 u_int64_t expire;
1120 u_int32_t packets[2][2];
1121 u_int32_t bytes[2][2];
1122 u_int32_t creatorid;
1123 u_int16_t tag;
1124 sa_family_t af_lan;
1125 sa_family_t af_gwy;
1126 u_int8_t proto;
1127 u_int8_t direction;
1128 u_int8_t log;
1129 u_int8_t allow_opts;
1130 u_int8_t timeout;
1131 u_int8_t sync_flags;
1132 u_int8_t updates;
1133 u_int8_t proto_variant;
1134 u_int8_t __pad;
1135 u_int32_t flowhash;
1136 } __packed;
1137
1138 #define PFSYNC_FLAG_COMPRESS 0x01
1139 #define PFSYNC_FLAG_STALE 0x02
1140 #define PFSYNC_FLAG_SRCNODE 0x04
1141 #define PFSYNC_FLAG_NATSRCNODE 0x08
1142
1143 #ifdef KERNEL
1144 /* for copies to/from userland via pf_ioctl() */
1145 #define pf_state_peer_to_pfsync(s, d) do { \
1146 (d)->seqlo = (s)->seqlo; \
1147 (d)->seqhi = (s)->seqhi; \
1148 (d)->seqdiff = (s)->seqdiff; \
1149 (d)->max_win = (s)->max_win; \
1150 (d)->mss = (s)->mss; \
1151 (d)->state = (s)->state; \
1152 (d)->wscale = (s)->wscale; \
1153 if ((s)->scrub) { \
1154 (d)->scrub.pfss_flags = \
1155 (s)->scrub->pfss_flags & PFSS_TIMESTAMP; \
1156 (d)->scrub.pfss_ttl = (s)->scrub->pfss_ttl; \
1157 (d)->scrub.pfss_ts_mod = (s)->scrub->pfss_ts_mod; \
1158 (d)->scrub.scrub_flag = PFSYNC_SCRUB_FLAG_VALID; \
1159 } \
1160 } while (0)
1161
1162 #define pf_state_peer_from_pfsync(s, d) do { \
1163 (d)->seqlo = (s)->seqlo; \
1164 (d)->seqhi = (s)->seqhi; \
1165 (d)->seqdiff = (s)->seqdiff; \
1166 (d)->max_win = (s)->max_win; \
1167 (d)->mss = ntohs((s)->mss); \
1168 (d)->state = (s)->state; \
1169 (d)->wscale = (s)->wscale; \
1170 if ((s)->scrub.scrub_flag == PFSYNC_SCRUB_FLAG_VALID && \
1171 (d)->scrub != NULL) { \
1172 (d)->scrub->pfss_flags = \
1173 ntohs((s)->scrub.pfss_flags) & PFSS_TIMESTAMP; \
1174 (d)->scrub->pfss_ttl = (s)->scrub.pfss_ttl; \
1175 (d)->scrub->pfss_ts_mod = (s)->scrub.pfss_ts_mod; \
1176 } \
1177 } while (0)
1178 #endif /* KERNEL */
1179
1180 #define pf_state_counter_to_pfsync(s, d) do { \
1181 d[0] = (s>>32)&0xffffffff; \
1182 d[1] = s&0xffffffff; \
1183 } while (0)
1184
1185 #define pf_state_counter_from_pfsync(s) \
1186 (((u_int64_t)(s[0])<<32) | (u_int64_t)(s[1]))
1187
1188
1189
1190 TAILQ_HEAD(pf_rulequeue, pf_rule);
1191
1192 struct pf_anchor;
1193
1194 struct pf_ruleset {
1195 struct {
1196 struct pf_rulequeue queues[2];
1197 struct {
1198 struct pf_rulequeue *ptr;
1199 struct pf_rule **ptr_array;
1200 u_int32_t rcount;
1201 u_int32_t ticket;
1202 int open;
1203 } active, inactive;
1204 } rules[PF_RULESET_MAX];
1205 struct pf_anchor *anchor;
1206 u_int32_t tticket;
1207 int tables;
1208 int topen;
1209 };
1210
1211 RB_HEAD(pf_anchor_global, pf_anchor);
1212 RB_HEAD(pf_anchor_node, pf_anchor);
1213 struct pf_anchor {
1214 RB_ENTRY(pf_anchor) entry_global;
1215 RB_ENTRY(pf_anchor) entry_node;
1216 struct pf_anchor *parent;
1217 struct pf_anchor_node children;
1218 char name[PF_ANCHOR_NAME_SIZE];
1219 char path[MAXPATHLEN];
1220 struct pf_ruleset ruleset;
1221 int refcnt; /* anchor rules */
1222 int match;
1223 char owner[PF_OWNER_NAME_SIZE];
1224 };
1225 #ifdef KERNEL
1226 RB_PROTOTYPE_SC(__private_extern__, pf_anchor_global, pf_anchor, entry_global,
1227 pf_anchor_compare);
1228 RB_PROTOTYPE_SC(__private_extern__, pf_anchor_node, pf_anchor, entry_node,
1229 pf_anchor_compare);
1230 #else /* !KERNEL */
1231 RB_PROTOTYPE(pf_anchor_global, pf_anchor, entry_global, pf_anchor_compare);
1232 RB_PROTOTYPE(pf_anchor_node, pf_anchor, entry_node, pf_anchor_compare);
1233 #endif /* !KERNEL */
1234
1235 #define PF_RESERVED_ANCHOR "_pf"
1236
1237 #define PFR_TFLAG_PERSIST 0x00000001
1238 #define PFR_TFLAG_CONST 0x00000002
1239 #define PFR_TFLAG_ACTIVE 0x00000004
1240 #define PFR_TFLAG_INACTIVE 0x00000008
1241 #define PFR_TFLAG_REFERENCED 0x00000010
1242 #define PFR_TFLAG_REFDANCHOR 0x00000020
1243 #define PFR_TFLAG_USRMASK 0x00000003
1244 #define PFR_TFLAG_SETMASK 0x0000003C
1245 #define PFR_TFLAG_ALLMASK 0x0000003F
1246
1247 struct pfr_table {
1248 char pfrt_anchor[MAXPATHLEN];
1249 char pfrt_name[PF_TABLE_NAME_SIZE];
1250 uint32_t pfrt_flags;
1251 uint8_t pfrt_fback;
1252 };
1253
1254 enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED,
1255 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE,
1256 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_MAX };
1257
1258 struct pfr_addr {
1259 union {
1260 struct in_addr _pfra_ip4addr;
1261 struct in6_addr _pfra_ip6addr;
1262 } pfra_u;
1263 uint8_t pfra_af;
1264 uint8_t pfra_net;
1265 uint8_t pfra_not;
1266 uint8_t pfra_fback;
1267 };
1268 #define pfra_ip4addr pfra_u._pfra_ip4addr
1269 #define pfra_ip6addr pfra_u._pfra_ip6addr
1270
1271 enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX };
1272 enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX };
1273 #define PFR_OP_XPASS PFR_OP_ADDR_MAX
1274
1275 struct pfr_astats {
1276 struct pfr_addr pfras_a;
1277 #if !defined(__LP64__)
1278 uint32_t _pad;
1279 #endif /* !__LP64__ */
1280 uint64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
1281 uint64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
1282 uint64_t pfras_tzero;
1283 };
1284
1285 enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX };
1286
1287 struct pfr_tstats {
1288 struct pfr_table pfrts_t;
1289 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
1290 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
1291 u_int64_t pfrts_match;
1292 u_int64_t pfrts_nomatch;
1293 u_int64_t pfrts_tzero;
1294 int pfrts_cnt;
1295 int pfrts_refcnt[PFR_REFCNT_MAX];
1296 #if !defined(__LP64__)
1297 u_int32_t _pad;
1298 #endif /* !__LP64__ */
1299 };
1300 #define pfrts_name pfrts_t.pfrt_name
1301 #define pfrts_flags pfrts_t.pfrt_flags
1302
1303 #ifdef KERNEL
1304 SLIST_HEAD(pfr_kentryworkq, pfr_kentry);
1305 struct pfr_kentry {
1306 struct radix_node pfrke_node[2];
1307 union sockaddr_union pfrke_sa;
1308 u_int64_t pfrke_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
1309 u_int64_t pfrke_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
1310 SLIST_ENTRY(pfr_kentry) pfrke_workq;
1311 u_int64_t pfrke_tzero;
1312 u_int8_t pfrke_af;
1313 u_int8_t pfrke_net;
1314 u_int8_t pfrke_not;
1315 u_int8_t pfrke_mark;
1316 u_int8_t pfrke_intrpool;
1317 };
1318
1319 SLIST_HEAD(pfr_ktableworkq, pfr_ktable);
1320 RB_HEAD(pfr_ktablehead, pfr_ktable);
1321 struct pfr_ktable {
1322 struct pfr_tstats pfrkt_ts;
1323 RB_ENTRY(pfr_ktable) pfrkt_tree;
1324 SLIST_ENTRY(pfr_ktable) pfrkt_workq;
1325 struct radix_node_head *pfrkt_ip4;
1326 struct radix_node_head *pfrkt_ip6;
1327 struct pfr_ktable *pfrkt_shadow;
1328 struct pfr_ktable *pfrkt_root;
1329 struct pf_ruleset *pfrkt_rs;
1330 u_int64_t pfrkt_larg;
1331 u_int32_t pfrkt_nflags;
1332 };
1333 #define pfrkt_t pfrkt_ts.pfrts_t
1334 #define pfrkt_name pfrkt_t.pfrt_name
1335 #define pfrkt_anchor pfrkt_t.pfrt_anchor
1336 #define pfrkt_ruleset pfrkt_t.pfrt_ruleset
1337 #define pfrkt_flags pfrkt_t.pfrt_flags
1338 #define pfrkt_cnt pfrkt_ts.pfrts_cnt
1339 #define pfrkt_refcnt pfrkt_ts.pfrts_refcnt
1340 #define pfrkt_packets pfrkt_ts.pfrts_packets
1341 #define pfrkt_bytes pfrkt_ts.pfrts_bytes
1342 #define pfrkt_match pfrkt_ts.pfrts_match
1343 #define pfrkt_nomatch pfrkt_ts.pfrts_nomatch
1344 #define pfrkt_tzero pfrkt_ts.pfrts_tzero
1345
1346 RB_HEAD(pf_state_tree_lan_ext, pf_state_key);
1347 RB_PROTOTYPE_SC(__private_extern__, pf_state_tree_lan_ext, pf_state_key,
1348 entry_lan_ext, pf_state_compare_lan_ext);
1349
1350 RB_HEAD(pf_state_tree_ext_gwy, pf_state_key);
1351 RB_PROTOTYPE_SC(__private_extern__, pf_state_tree_ext_gwy, pf_state_key,
1352 entry_ext_gwy, pf_state_compare_ext_gwy);
1353
1354 RB_HEAD(pfi_ifhead, pfi_kif);
1355
1356 /* state tables */
1357 extern struct pf_state_tree_lan_ext pf_statetbl_lan_ext;
1358 extern struct pf_state_tree_ext_gwy pf_statetbl_ext_gwy;
1359
1360 struct pfi_kif {
1361 char pfik_name[IFNAMSIZ];
1362 RB_ENTRY(pfi_kif) pfik_tree;
1363 u_int64_t pfik_packets[2][2][2];
1364 u_int64_t pfik_bytes[2][2][2];
1365 u_int64_t pfik_tzero;
1366 int pfik_flags;
1367 void *pfik_ah_cookie;
1368 struct ifnet *pfik_ifp;
1369 int pfik_states;
1370 int pfik_rules;
1371 TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs;
1372 };
1373
1374 enum pfi_kif_refs {
1375 PFI_KIF_REF_NONE,
1376 PFI_KIF_REF_STATE,
1377 PFI_KIF_REF_RULE
1378 };
1379
1380 struct pfi_uif {
1381 #else /* !KERNEL */
1382 struct pfi_kif {
1383 #endif /* !KERNEL */
1384 char pfik_name[IFNAMSIZ];
1385 u_int64_t pfik_packets[2][2][2];
1386 u_int64_t pfik_bytes[2][2][2];
1387 u_int64_t pfik_tzero;
1388 int pfik_flags;
1389 int pfik_states;
1390 int pfik_rules;
1391 #if !defined(__LP64__)
1392 u_int32_t _pad;
1393 #endif /* !__LP64__ */
1394 };
1395
1396 #define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */
1397
1398 #ifdef KERNEL
1399 struct pf_pdesc {
1400 struct {
1401 int done;
1402 uid_t uid;
1403 gid_t gid;
1404 pid_t pid;
1405 } lookup;
1406 u_int64_t tot_len; /* Make Mickey money */
1407 union {
1408 struct tcphdr *tcp;
1409 struct udphdr *udp;
1410 struct icmp *icmp;
1411 struct icmp6_hdr *icmp6;
1412 struct pf_grev1_hdr *grev1;
1413 struct pf_esp_hdr *esp;
1414 void *any;
1415 } hdr;
1416
1417 /* XXX TODO: Change baddr and naddr to *saddr */
1418 struct pf_addr baddr; /* src address before translation */
1419 struct pf_addr bdaddr; /* dst address before translation */
1420 struct pf_addr naddr; /* src address after translation */
1421 struct pf_addr ndaddr; /* dst address after translation */
1422 struct pf_rule *nat_rule; /* nat/rdr rule applied to packet */
1423 struct pf_addr *src;
1424 struct pf_addr *dst;
1425 struct ether_header *eh;
1426 pbuf_t *mp;
1427 int lmw; /* lazy writable offset */
1428 struct pf_mtag *pf_mtag;
1429 u_int16_t *ip_sum;
1430 u_int32_t off; /* protocol header offset */
1431 u_int32_t hdrlen; /* protocol header length */
1432 u_int32_t p_len; /* total length of payload */
1433 u_int16_t flags; /* Let SCRUB trigger behavior in */
1434 /* state code. Easier than tags */
1435 #define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */
1436 #define PFDESC_IP_REAS 0x0002 /* IP frags would've been reassembled */
1437 #define PFDESC_IP_FRAG 0x0004 /* This is a fragment */
1438 sa_family_t af;
1439 sa_family_t naf; /* address family after translation */
1440 u_int8_t proto;
1441 u_int8_t tos;
1442 u_int8_t ttl;
1443 u_int8_t proto_variant;
1444 mbuf_svc_class_t sc; /* mbuf service class (MBUF_SVC) */
1445 u_int32_t pktflags; /* mbuf packet flags (PKTF) */
1446 u_int32_t flowsrc; /* flow source (FLOWSRC) */
1447 u_int32_t flowhash; /* flow hash to identify the sender */
1448 };
1449 #endif /* KERNEL */
1450
1451 /* flags for RDR options */
1452 #define PF_DPORT_RANGE 0x01 /* Dest port uses range */
1453 #define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */
1454
1455 /* Reasons code for passing/dropping a packet */
1456 #define PFRES_MATCH 0 /* Explicit match of a rule */
1457 #define PFRES_BADOFF 1 /* Bad offset for pull_hdr */
1458 #define PFRES_FRAG 2 /* Dropping following fragment */
1459 #define PFRES_SHORT 3 /* Dropping short packet */
1460 #define PFRES_NORM 4 /* Dropping by normalizer */
1461 #define PFRES_MEMORY 5 /* Dropped due to lacking mem */
1462 #define PFRES_TS 6 /* Bad TCP Timestamp (RFC1323) */
1463 #define PFRES_CONGEST 7 /* Congestion (of ipintrq) */
1464 #define PFRES_IPOPTIONS 8 /* IP option */
1465 #define PFRES_PROTCKSUM 9 /* Protocol checksum invalid */
1466 #define PFRES_BADSTATE 10 /* State mismatch */
1467 #define PFRES_STATEINS 11 /* State insertion failure */
1468 #define PFRES_MAXSTATES 12 /* State limit */
1469 #define PFRES_SRCLIMIT 13 /* Source node/conn limit */
1470 #define PFRES_SYNPROXY 14 /* SYN proxy */
1471 #define PFRES_DUMMYNET 15 /* Dummynet */
1472 #define PFRES_MAX 16 /* total+1 */
1473
1474 #define PFRES_NAMES { \
1475 "match", \
1476 "bad-offset", \
1477 "fragment", \
1478 "short", \
1479 "normalize", \
1480 "memory", \
1481 "bad-timestamp", \
1482 "congestion", \
1483 "ip-option", \
1484 "proto-cksum", \
1485 "state-mismatch", \
1486 "state-insert", \
1487 "state-limit", \
1488 "src-limit", \
1489 "synproxy", \
1490 "dummynet", \
1491 NULL \
1492 }
1493
1494 /* Counters for other things we want to keep track of */
1495 #define LCNT_STATES 0 /* states */
1496 #define LCNT_SRCSTATES 1 /* max-src-states */
1497 #define LCNT_SRCNODES 2 /* max-src-nodes */
1498 #define LCNT_SRCCONN 3 /* max-src-conn */
1499 #define LCNT_SRCCONNRATE 4 /* max-src-conn-rate */
1500 #define LCNT_OVERLOAD_TABLE 5 /* entry added to overload table */
1501 #define LCNT_OVERLOAD_FLUSH 6 /* state entries flushed */
1502 #define LCNT_MAX 7 /* total+1 */
1503
1504 #define LCNT_NAMES { \
1505 "max states per rule", \
1506 "max-src-states", \
1507 "max-src-nodes", \
1508 "max-src-conn", \
1509 "max-src-conn-rate", \
1510 "overload table insertion", \
1511 "overload flush states", \
1512 NULL \
1513 }
1514
1515 /* UDP state enumeration */
1516 #define PFUDPS_NO_TRAFFIC 0
1517 #define PFUDPS_SINGLE 1
1518 #define PFUDPS_MULTIPLE 2
1519
1520 #define PFUDPS_NSTATES 3 /* number of state levels */
1521
1522 #define PFUDPS_NAMES { \
1523 "NO_TRAFFIC", \
1524 "SINGLE", \
1525 "MULTIPLE", \
1526 NULL \
1527 }
1528
1529 /* GREv1 protocol state enumeration */
1530 #define PFGRE1S_NO_TRAFFIC 0
1531 #define PFGRE1S_INITIATING 1
1532 #define PFGRE1S_ESTABLISHED 2
1533
1534 #define PFGRE1S_NSTATES 3 /* number of state levels */
1535
1536 #define PFGRE1S_NAMES { \
1537 "NO_TRAFFIC", \
1538 "INITIATING", \
1539 "ESTABLISHED", \
1540 NULL \
1541 }
1542
1543 #define PFESPS_NO_TRAFFIC 0
1544 #define PFESPS_INITIATING 1
1545 #define PFESPS_ESTABLISHED 2
1546
1547 #define PFESPS_NSTATES 3 /* number of state levels */
1548
1549 #define PFESPS_NAMES { "NO_TRAFFIC", "INITIATING", "ESTABLISHED", NULL }
1550
1551 /* Other protocol state enumeration */
1552 #define PFOTHERS_NO_TRAFFIC 0
1553 #define PFOTHERS_SINGLE 1
1554 #define PFOTHERS_MULTIPLE 2
1555
1556 #define PFOTHERS_NSTATES 3 /* number of state levels */
1557
1558 #define PFOTHERS_NAMES { \
1559 "NO_TRAFFIC", \
1560 "SINGLE", \
1561 "MULTIPLE", \
1562 NULL \
1563 }
1564
1565 #define FCNT_STATE_SEARCH 0
1566 #define FCNT_STATE_INSERT 1
1567 #define FCNT_STATE_REMOVALS 2
1568 #define FCNT_MAX 3
1569
1570 #define SCNT_SRC_NODE_SEARCH 0
1571 #define SCNT_SRC_NODE_INSERT 1
1572 #define SCNT_SRC_NODE_REMOVALS 2
1573 #define SCNT_MAX 3
1574
1575 #ifdef KERNEL
1576 #define ACTION_SET(a, x) \
1577 do { \
1578 if ((a) != NULL) \
1579 *(a) = (x); \
1580 } while (0)
1581
1582 #define REASON_SET(a, x) \
1583 do { \
1584 if ((a) != NULL) \
1585 *(a) = (x); \
1586 if (x < PFRES_MAX) \
1587 pf_status.counters[x]++; \
1588 } while (0)
1589 #endif /* KERNEL */
1590
1591 struct pf_status {
1592 u_int64_t counters[PFRES_MAX];
1593 u_int64_t lcounters[LCNT_MAX]; /* limit counters */
1594 u_int64_t fcounters[FCNT_MAX];
1595 u_int64_t scounters[SCNT_MAX];
1596 u_int64_t pcounters[2][2][3];
1597 u_int64_t bcounters[2][2];
1598 u_int64_t stateid;
1599 u_int32_t running;
1600 u_int32_t states;
1601 u_int32_t src_nodes;
1602 u_int64_t since __attribute__((aligned(8)));
1603 u_int32_t debug;
1604 u_int32_t hostid;
1605 char ifname[IFNAMSIZ];
1606 u_int8_t pf_chksum[PF_MD5_DIGEST_LENGTH];
1607 };
1608
1609 struct cbq_opts {
1610 u_int32_t minburst;
1611 u_int32_t maxburst;
1612 u_int32_t pktsize;
1613 u_int32_t maxpktsize;
1614 u_int32_t ns_per_byte;
1615 u_int32_t maxidle;
1616 int32_t minidle;
1617 u_int32_t offtime;
1618 u_int32_t flags;
1619 };
1620
1621 struct priq_opts {
1622 u_int32_t flags;
1623 };
1624
1625 struct hfsc_opts {
1626 /* real-time service curve */
1627 u_int64_t rtsc_m1; /* slope of the 1st segment in bps */
1628 u_int64_t rtsc_d; /* the x-projection of m1 in msec */
1629 u_int64_t rtsc_m2; /* slope of the 2nd segment in bps */
1630 u_int32_t rtsc_fl; /* service curve flags */
1631 #if !defined(__LP64__)
1632 u_int32_t _pad;
1633 #endif /* !__LP64__ */
1634 /* link-sharing service curve */
1635 u_int64_t lssc_m1;
1636 u_int64_t lssc_d;
1637 u_int64_t lssc_m2;
1638 u_int32_t lssc_fl;
1639 #if !defined(__LP64__)
1640 u_int32_t __pad;
1641 #endif /* !__LP64__ */
1642 /* upper-limit service curve */
1643 u_int64_t ulsc_m1;
1644 u_int64_t ulsc_d;
1645 u_int64_t ulsc_m2;
1646 u_int32_t ulsc_fl;
1647 u_int32_t flags; /* scheduler flags */
1648 };
1649
1650 struct fairq_opts {
1651 u_int32_t nbuckets; /* hash buckets */
1652 u_int32_t flags;
1653 u_int64_t hogs_m1; /* hog detection bandwidth */
1654
1655 /* link-sharing service curve */
1656 u_int64_t lssc_m1;
1657 u_int64_t lssc_d;
1658 u_int64_t lssc_m2;
1659 };
1660
1661 /* bandwidth types */
1662 #define PF_ALTQ_BW_ABSOLUTE 1 /* bw in absolute value (bps) */
1663 #define PF_ALTQ_BW_PERCENT 2 /* bandwidth in percentage */
1664
1665 /* ALTQ rule flags */
1666 #define PF_ALTQF_TBR 0x1 /* enable Token Bucket Regulator */
1667
1668 /* queue rule flags */
1669 #define PF_ALTQ_QRF_WEIGHT 0x1 /* weight instead of priority */
1670
1671 struct pf_altq {
1672 char ifname[IFNAMSIZ];
1673
1674 /* discipline-specific state */
1675 void *altq_disc __attribute__((aligned(8)));
1676 TAILQ_ENTRY(pf_altq) entries __attribute__((aligned(8)));
1677 #if !defined(__LP64__)
1678 u_int32_t _pad[2];
1679 #endif /* !__LP64__ */
1680
1681 u_int32_t aflags; /* ALTQ rule flags */
1682 u_int32_t bwtype; /* bandwidth type */
1683
1684 /* scheduler spec */
1685 u_int32_t scheduler; /* scheduler type */
1686 u_int32_t tbrsize; /* tokenbucket regulator size */
1687 u_int64_t ifbandwidth; /* interface bandwidth */
1688
1689 /* queue spec */
1690 char qname[PF_QNAME_SIZE]; /* queue name */
1691 char parent[PF_QNAME_SIZE]; /* parent name */
1692 u_int32_t parent_qid; /* parent queue id */
1693 u_int32_t qrflags; /* queue rule flags */
1694 union {
1695 u_int32_t priority; /* priority */
1696 u_int32_t weight; /* weight */
1697 };
1698 u_int32_t qlimit; /* queue size limit */
1699 u_int32_t flags; /* misc flags */
1700 #if !defined(__LP64__)
1701 u_int32_t __pad;
1702 #endif /* !__LP64__ */
1703 u_int64_t bandwidth; /* queue bandwidth */
1704 union {
1705 struct cbq_opts cbq_opts;
1706 struct priq_opts priq_opts;
1707 struct hfsc_opts hfsc_opts;
1708 struct fairq_opts fairq_opts;
1709 } pq_u;
1710
1711 u_int32_t qid; /* return value */
1712 };
1713
1714 struct pf_tagname {
1715 TAILQ_ENTRY(pf_tagname) entries;
1716 char name[PF_TAG_NAME_SIZE];
1717 u_int16_t tag;
1718 int ref;
1719 };
1720
1721 #define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */
1722 #define PFFRAG_FRAG_HIWAT 1000 /* Number of fragmented packets */
1723 #define PFFRAG_FRCENT_HIWAT 50000 /* Number of fragment cache entries */
1724 #define PFFRAG_FRCACHE_HIWAT 10000 /* Number of fragment descriptors */
1725
1726 #define PFR_KTABLE_HIWAT 1000 /* Number of tables */
1727 #define PFR_KENTRY_HIWAT 200000 /* Number of table entries */
1728 #define PFR_KENTRY_HIWAT_SMALL 100000 /* Number of table entries (tiny hosts) */
1729
1730 /*
1731 * ioctl parameter structures
1732 */
1733
1734 struct pfioc_pooladdr {
1735 u_int32_t action;
1736 u_int32_t ticket;
1737 u_int32_t nr;
1738 u_int32_t r_num;
1739 u_int8_t r_action;
1740 u_int8_t r_last;
1741 u_int8_t af;
1742 char anchor[MAXPATHLEN];
1743 struct pf_pooladdr addr;
1744 };
1745
1746 struct pfioc_rule {
1747 u_int32_t action;
1748 u_int32_t ticket;
1749 u_int32_t pool_ticket;
1750 u_int32_t nr;
1751 char anchor[MAXPATHLEN];
1752 char anchor_call[MAXPATHLEN];
1753 struct pf_rule rule;
1754 };
1755
1756 struct pfioc_natlook {
1757 struct pf_addr saddr;
1758 struct pf_addr daddr;
1759 struct pf_addr rsaddr;
1760 struct pf_addr rdaddr;
1761 union pf_state_xport sxport;
1762 union pf_state_xport dxport;
1763 union pf_state_xport rsxport;
1764 union pf_state_xport rdxport;
1765 sa_family_t af;
1766 u_int8_t proto;
1767 u_int8_t proto_variant;
1768 u_int8_t direction;
1769 };
1770
1771 struct pfioc_state {
1772 struct pfsync_state state;
1773 };
1774
1775 struct pfioc_src_node_kill {
1776 /* XXX returns the number of src nodes killed in psnk_af */
1777 sa_family_t psnk_af;
1778 struct pf_rule_addr psnk_src;
1779 struct pf_rule_addr psnk_dst;
1780 };
1781
1782 struct pfioc_state_addr_kill {
1783 struct pf_addr_wrap addr;
1784 u_int8_t reserved_[3];
1785 u_int8_t neg;
1786 union pf_rule_xport xport;
1787 };
1788
1789 struct pfioc_state_kill {
1790 /* XXX returns the number of states killed in psk_af */
1791 sa_family_t psk_af;
1792 u_int8_t psk_proto;
1793 u_int8_t psk_proto_variant;
1794 u_int8_t _pad;
1795 struct pfioc_state_addr_kill psk_src;
1796 struct pfioc_state_addr_kill psk_dst;
1797 char psk_ifname[IFNAMSIZ];
1798 char psk_ownername[PF_OWNER_NAME_SIZE];
1799 };
1800
1801 struct pfioc_states {
1802 int ps_len;
1803 union {
1804 caddr_t psu_buf;
1805 struct pfsync_state *psu_states;
1806 } ps_u __attribute__((aligned(8)));
1807 #define ps_buf ps_u.psu_buf
1808 #define ps_states ps_u.psu_states
1809 };
1810
1811 #ifdef KERNEL
1812 struct pfioc_states_32 {
1813 int ps_len;
1814 union {
1815 user32_addr_t psu_buf;
1816 user32_addr_t psu_states;
1817 } ps_u __attribute__((aligned(8)));
1818 };
1819
1820 struct pfioc_states_64 {
1821 int ps_len;
1822 union {
1823 user64_addr_t psu_buf;
1824 user64_addr_t psu_states;
1825 } ps_u __attribute__((aligned(8)));
1826 };
1827 #endif /* KERNEL */
1828
1829 #define PFTOK_PROCNAME_LEN 64
1830 #pragma pack(1)
1831 struct pfioc_token {
1832 u_int64_t token_value;
1833 u_int64_t timestamp;
1834 pid_t pid;
1835 char proc_name[PFTOK_PROCNAME_LEN];
1836 };
1837 #pragma pack()
1838
1839 struct pfioc_kernel_token {
1840 SLIST_ENTRY(pfioc_kernel_token) next;
1841 struct pfioc_token token;
1842 };
1843
1844 struct pfioc_remove_token {
1845 u_int64_t token_value;
1846 u_int64_t refcount;
1847 };
1848
1849 struct pfioc_tokens {
1850 int size;
1851 union {
1852 caddr_t pgtu_buf;
1853 struct pfioc_token *pgtu_tokens;
1854 } pgt_u __attribute__((aligned(8)));
1855 #define pgt_buf pgt_u.pgtu_buf
1856 #define pgt_tokens pgt_u.pgtu_tokens
1857 };
1858
1859 #ifdef KERNEL
1860 struct pfioc_tokens_32 {
1861 int size;
1862 union {
1863 user32_addr_t pgtu_buf;
1864 user32_addr_t pgtu_tokens;
1865 } pgt_u __attribute__((aligned(8)));
1866 };
1867
1868 struct pfioc_tokens_64 {
1869 int size;
1870 union {
1871 user64_addr_t pgtu_buf;
1872 user64_addr_t pgtu_tokens;
1873 } pgt_u __attribute__((aligned(8)));
1874 };
1875 #endif /* KERNEL */
1876
1877
1878 struct pfioc_src_nodes {
1879 int psn_len;
1880 union {
1881 caddr_t psu_buf;
1882 struct pf_src_node *psu_src_nodes;
1883 } psn_u __attribute__((aligned(8)));
1884 #define psn_buf psn_u.psu_buf
1885 #define psn_src_nodes psn_u.psu_src_nodes
1886 };
1887
1888 #ifdef KERNEL
1889 struct pfioc_src_nodes_32 {
1890 int psn_len;
1891 union {
1892 user32_addr_t psu_buf;
1893 user32_addr_t psu_src_nodes;
1894 } psn_u __attribute__((aligned(8)));
1895 };
1896
1897 struct pfioc_src_nodes_64 {
1898 int psn_len;
1899 union {
1900 user64_addr_t psu_buf;
1901 user64_addr_t psu_src_nodes;
1902 } psn_u __attribute__((aligned(8)));
1903 };
1904 #endif /* KERNEL */
1905
1906 struct pfioc_if {
1907 char ifname[IFNAMSIZ];
1908 };
1909
1910 struct pfioc_tm {
1911 int timeout;
1912 int seconds;
1913 };
1914
1915 struct pfioc_limit {
1916 int index;
1917 unsigned limit;
1918 };
1919
1920 struct pfioc_altq {
1921 u_int32_t action;
1922 u_int32_t ticket;
1923 u_int32_t nr;
1924 struct pf_altq altq __attribute__((aligned(8)));
1925 };
1926
1927 struct pfioc_qstats {
1928 u_int32_t ticket;
1929 u_int32_t nr;
1930 void *buf __attribute__((aligned(8)));
1931 int nbytes __attribute__((aligned(8)));
1932 u_int8_t scheduler;
1933 };
1934
1935 struct pfioc_ruleset {
1936 u_int32_t nr;
1937 char path[MAXPATHLEN];
1938 char name[PF_ANCHOR_NAME_SIZE];
1939 };
1940
1941 #define PF_RULESET_ALTQ (PF_RULESET_MAX)
1942 #define PF_RULESET_TABLE (PF_RULESET_MAX+1)
1943 struct pfioc_trans {
1944 int size; /* number of elements */
1945 int esize; /* size of each element in bytes */
1946 struct pfioc_trans_e {
1947 int rs_num;
1948 char anchor[MAXPATHLEN];
1949 u_int32_t ticket;
1950 } *array __attribute__((aligned(8)));
1951 };
1952
1953 #ifdef KERNEL
1954 struct pfioc_trans_32 {
1955 int size; /* number of elements */
1956 int esize; /* size of each element in bytes */
1957 user32_addr_t array __attribute__((aligned(8)));
1958 };
1959
1960 struct pfioc_trans_64 {
1961 int size; /* number of elements */
1962 int esize; /* size of each element in bytes */
1963 user64_addr_t array __attribute__((aligned(8)));
1964 };
1965 #endif /* KERNEL */
1966
1967
1968 #define PFR_FLAG_ATOMIC 0x00000001
1969 #define PFR_FLAG_DUMMY 0x00000002
1970 #define PFR_FLAG_FEEDBACK 0x00000004
1971 #define PFR_FLAG_CLSTATS 0x00000008
1972 #define PFR_FLAG_ADDRSTOO 0x00000010
1973 #define PFR_FLAG_REPLACE 0x00000020
1974 #define PFR_FLAG_ALLRSETS 0x00000040
1975 #define PFR_FLAG_ALLMASK 0x0000007F
1976 #ifdef KERNEL
1977 #define PFR_FLAG_USERIOCTL 0x10000000
1978 #endif /* KERNEL */
1979
1980 struct pfioc_table {
1981 struct pfr_table pfrio_table;
1982 void *pfrio_buffer __attribute__((aligned(8)));
1983 int pfrio_esize __attribute__((aligned(8)));
1984 int pfrio_size;
1985 int pfrio_size2;
1986 int pfrio_nadd;
1987 int pfrio_ndel;
1988 int pfrio_nchange;
1989 int pfrio_flags;
1990 u_int32_t pfrio_ticket;
1991 };
1992 #define pfrio_exists pfrio_nadd
1993 #define pfrio_nzero pfrio_nadd
1994 #define pfrio_nmatch pfrio_nadd
1995 #define pfrio_naddr pfrio_size2
1996 #define pfrio_setflag pfrio_size2
1997 #define pfrio_clrflag pfrio_nadd
1998
1999 #ifdef KERNEL
2000 struct pfioc_table_32 {
2001 struct pfr_table pfrio_table;
2002 user32_addr_t pfrio_buffer __attribute__((aligned(8)));
2003 int pfrio_esize __attribute__((aligned(8)));
2004 int pfrio_size;
2005 int pfrio_size2;
2006 int pfrio_nadd;
2007 int pfrio_ndel;
2008 int pfrio_nchange;
2009 int pfrio_flags;
2010 u_int32_t pfrio_ticket;
2011 };
2012
2013 struct pfioc_table_64 {
2014 struct pfr_table pfrio_table;
2015 user64_addr_t pfrio_buffer __attribute__((aligned(8)));
2016 int pfrio_esize __attribute__((aligned(8)));
2017 int pfrio_size;
2018 int pfrio_size2;
2019 int pfrio_nadd;
2020 int pfrio_ndel;
2021 int pfrio_nchange;
2022 int pfrio_flags;
2023 u_int32_t pfrio_ticket;
2024 };
2025 #endif /* KERNEL */
2026
2027 struct pfioc_iface {
2028 char pfiio_name[IFNAMSIZ];
2029 void *pfiio_buffer __attribute__((aligned(8)));
2030 int pfiio_esize __attribute__((aligned(8)));
2031 int pfiio_size;
2032 int pfiio_nzero;
2033 int pfiio_flags;
2034 };
2035
2036 #ifdef KERNEL
2037 struct pfioc_iface_32 {
2038 char pfiio_name[IFNAMSIZ];
2039 user32_addr_t pfiio_buffer __attribute__((aligned(8)));
2040 int pfiio_esize __attribute__((aligned(8)));
2041 int pfiio_size;
2042 int pfiio_nzero;
2043 int pfiio_flags;
2044 };
2045
2046 struct pfioc_iface_64 {
2047 char pfiio_name[IFNAMSIZ];
2048 user64_addr_t pfiio_buffer __attribute__((aligned(8)));
2049 int pfiio_esize __attribute__((aligned(8)));
2050 int pfiio_size;
2051 int pfiio_nzero;
2052 int pfiio_flags;
2053 };
2054 #endif /* KERNEL */
2055
2056 struct pf_ifspeed {
2057 char ifname[IFNAMSIZ];
2058 u_int64_t baudrate;
2059 };
2060
2061 /*
2062 * ioctl operations
2063 */
2064
2065 #define DIOCSTART _IO ('D', 1)
2066 #define DIOCSTOP _IO ('D', 2)
2067 #define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule)
2068 #define DIOCGETSTARTERS _IOWR('D', 5, struct pfioc_tokens)
2069 #define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule)
2070 #define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule)
2071 #define DIOCSTARTREF _IOR ('D', 8, u_int64_t)
2072 #define DIOCSTOPREF _IOWR('D', 9, struct pfioc_remove_token)
2073 /* XXX cut 10 - 17 */
2074 #define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill)
2075 #define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state)
2076 #define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if)
2077 #define DIOCGETSTATUS _IOWR('D', 21, struct pf_status)
2078 #define DIOCCLRSTATUS _IO ('D', 22)
2079 #define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook)
2080 #define DIOCSETDEBUG _IOWR('D', 24, u_int32_t)
2081 #define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states)
2082 #define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule)
2083 #define DIOCINSERTRULE _IOWR('D', 27, struct pfioc_rule)
2084 #define DIOCDELETERULE _IOWR('D', 28, struct pfioc_rule)
2085 #define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm)
2086 #define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm)
2087 #define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state)
2088 #define DIOCCLRRULECTRS _IO ('D', 38)
2089 #define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit)
2090 #define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit)
2091 #define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill)
2092 #define DIOCSTARTALTQ _IO ('D', 42)
2093 #define DIOCSTOPALTQ _IO ('D', 43)
2094 #define DIOCADDALTQ _IOWR('D', 45, struct pfioc_altq)
2095 #define DIOCGETALTQS _IOWR('D', 47, struct pfioc_altq)
2096 #define DIOCGETALTQ _IOWR('D', 48, struct pfioc_altq)
2097 #define DIOCCHANGEALTQ _IOWR('D', 49, struct pfioc_altq)
2098 #define DIOCGETQSTATS _IOWR('D', 50, struct pfioc_qstats)
2099 #define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr)
2100 #define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr)
2101 #define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr)
2102 #define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr)
2103 #define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr)
2104 /* XXX cut 55 - 57 */
2105 #define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset)
2106 #define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset)
2107 #define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table)
2108 #define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table)
2109 #define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table)
2110 #define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table)
2111 #define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table)
2112 #define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table)
2113 #define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table)
2114 #define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table)
2115 #define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table)
2116 #define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table)
2117 #define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table)
2118 #define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table)
2119 #define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table)
2120 #define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table)
2121 #define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table)
2122 #define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table)
2123 #define DIOCOSFPFLUSH _IO('D', 78)
2124 #define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl)
2125 #define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl)
2126 #define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans)
2127 #define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans)
2128 #define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans)
2129 #define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes)
2130 #define DIOCCLRSRCNODES _IO('D', 85)
2131 #define DIOCSETHOSTID _IOWR('D', 86, u_int32_t)
2132 #define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface)
2133 #define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface)
2134 #define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface)
2135 #define DIOCKILLSRCNODES _IOWR('D', 91, struct pfioc_src_node_kill)
2136 #define DIOCGIFSPEED _IOWR('D', 92, struct pf_ifspeed)
2137
2138 #ifdef KERNEL
2139 RB_HEAD(pf_src_tree, pf_src_node);
2140 RB_PROTOTYPE_SC(__private_extern__, pf_src_tree, pf_src_node, entry,
2141 pf_src_compare);
2142 extern struct pf_src_tree tree_src_tracking;
2143
2144 RB_HEAD(pf_state_tree_id, pf_state);
2145 RB_PROTOTYPE_SC(__private_extern__, pf_state_tree_id, pf_state,
2146 entry_id, pf_state_compare_id);
2147 extern struct pf_state_tree_id tree_id;
2148 extern struct pf_state_queue state_list;
2149
2150 TAILQ_HEAD(pf_poolqueue, pf_pool);
2151 extern struct pf_poolqueue pf_pools[2];
2152 extern struct pf_palist pf_pabuf;
2153 extern u_int32_t ticket_pabuf;
2154 extern struct pf_poolqueue *pf_pools_active;
2155 extern struct pf_poolqueue *pf_pools_inactive;
2156
2157 __private_extern__ int pf_tbladdr_setup(struct pf_ruleset *,
2158 struct pf_addr_wrap *);
2159 __private_extern__ void pf_tbladdr_remove(struct pf_addr_wrap *);
2160 __private_extern__ void pf_tbladdr_copyout(struct pf_addr_wrap *);
2161 __private_extern__ void pf_calc_skip_steps(struct pf_rulequeue *);
2162 __private_extern__ u_int32_t pf_calc_state_key_flowhash(struct pf_state_key *);
2163
2164 extern struct pool pf_src_tree_pl, pf_rule_pl;
2165 extern struct pool pf_state_pl, pf_state_key_pl, pf_pooladdr_pl;
2166 extern struct pool pf_state_scrub_pl;
2167 extern struct pool pf_app_state_pl;
2168
2169 extern struct thread *pf_purge_thread;
2170
2171 __private_extern__ void pfinit(void);
2172 __private_extern__ void pf_purge_thread_fn(void *, wait_result_t) __dead2;
2173 __private_extern__ void pf_purge_expired_src_nodes(void);
2174 __private_extern__ void pf_purge_expired_states(u_int32_t);
2175 __private_extern__ void pf_unlink_state(struct pf_state *);
2176 __private_extern__ void pf_free_state(struct pf_state *);
2177 __private_extern__ int pf_insert_state(struct pfi_kif *, struct pf_state *);
2178 __private_extern__ int pf_insert_src_node(struct pf_src_node **,
2179 struct pf_rule *, struct pf_addr *, sa_family_t);
2180 __private_extern__ void pf_src_tree_remove_state(struct pf_state *);
2181 __private_extern__ struct pf_state *pf_find_state_byid(struct pf_state_cmp *);
2182 __private_extern__ struct pf_state *pf_find_state_all(struct pf_state_key_cmp *,
2183 u_int, int *);
2184 __private_extern__ void pf_print_state(struct pf_state *);
2185 __private_extern__ void pf_print_flags(u_int8_t);
2186 __private_extern__ u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t,
2187 u_int8_t);
2188
2189 extern struct ifnet *sync_ifp;
2190 extern struct pf_rule pf_default_rule;
2191 __private_extern__ void pf_addrcpy(struct pf_addr *, struct pf_addr *,
2192 u_int8_t);
2193 __private_extern__ void pf_rm_rule(struct pf_rulequeue *, struct pf_rule *);
2194
2195 struct ip_fw_args;
2196
2197 extern boolean_t is_nlc_enabled_glb;
2198
2199 #if INET
2200 __private_extern__ int pf_test(int, struct ifnet *, pbuf_t **,
2201 struct ether_header *, struct ip_fw_args *);
2202 __private_extern__ int pf_test_mbuf(int, struct ifnet *, struct mbuf **,
2203 struct ether_header *, struct ip_fw_args *);
2204 #endif /* INET */
2205
2206 __private_extern__ int pf_test6(int, struct ifnet *, pbuf_t **,
2207 struct ether_header *, struct ip_fw_args *);
2208 __private_extern__ int pf_test6_mbuf(int, struct ifnet *, struct mbuf **,
2209 struct ether_header *, struct ip_fw_args *);
2210 __private_extern__ void pf_poolmask(struct pf_addr *, struct pf_addr *,
2211 struct pf_addr *, struct pf_addr *, u_int8_t);
2212 __private_extern__ void pf_addr_inc(struct pf_addr *, sa_family_t);
2213 __private_extern__ int pf_normalize_ip6(pbuf_t *, int, struct pfi_kif *,
2214 u_short *, struct pf_pdesc *);
2215 __private_extern__ int pf_refragment6(struct ifnet *, pbuf_t **,
2216 struct pf_fragment_tag *);
2217
2218 __private_extern__ void *pf_lazy_makewritable(struct pf_pdesc *,
2219 pbuf_t *, int);
2220 __private_extern__ void *pf_pull_hdr(pbuf_t *, int, void *, int,
2221 u_short *, u_short *, sa_family_t);
2222 __private_extern__ void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t);
2223 __private_extern__ int pflog_packet(struct pfi_kif *, pbuf_t *,
2224 sa_family_t, u_int8_t, u_int8_t, struct pf_rule *, struct pf_rule *,
2225 struct pf_ruleset *, struct pf_pdesc *);
2226 __private_extern__ int pf_match_addr(u_int8_t, struct pf_addr *,
2227 struct pf_addr *, struct pf_addr *, sa_family_t);
2228 __private_extern__ int pf_match_addr_range(struct pf_addr *, struct pf_addr *,
2229 struct pf_addr *, sa_family_t);
2230 __private_extern__ int pf_match(u_int8_t, u_int32_t, u_int32_t, u_int32_t);
2231 __private_extern__ int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t);
2232 __private_extern__ int pf_match_xport(u_int8_t, u_int8_t, union pf_rule_xport *,
2233 union pf_state_xport *);
2234 __private_extern__ int pf_match_uid(u_int8_t, uid_t, uid_t, uid_t);
2235 __private_extern__ int pf_match_gid(u_int8_t, gid_t, gid_t, gid_t);
2236
2237 __private_extern__ void pf_normalize_init(void);
2238 __private_extern__ int pf_normalize_isempty(void);
2239 __private_extern__ int pf_normalize_ip(pbuf_t *, int, struct pfi_kif *,
2240 u_short *, struct pf_pdesc *);
2241 __private_extern__ int pf_normalize_tcp(int, struct pfi_kif *, pbuf_t *,
2242 int, int, void *, struct pf_pdesc *);
2243 __private_extern__ void pf_normalize_tcp_cleanup(struct pf_state *);
2244 __private_extern__ int pf_normalize_tcp_init(pbuf_t *, int,
2245 struct pf_pdesc *, struct tcphdr *, struct pf_state_peer *,
2246 struct pf_state_peer *);
2247 __private_extern__ int pf_normalize_tcp_stateful(pbuf_t *, int,
2248 struct pf_pdesc *, u_short *, struct tcphdr *, struct pf_state *,
2249 struct pf_state_peer *, struct pf_state_peer *, int *);
2250 __private_extern__ u_int64_t pf_state_expires(const struct pf_state *);
2251 __private_extern__ void pf_purge_expired_fragments(void);
2252 __private_extern__ int pf_routable(struct pf_addr *addr, sa_family_t af,
2253 struct pfi_kif *);
2254 __private_extern__ int pf_rtlabel_match(struct pf_addr *, sa_family_t,
2255 struct pf_addr_wrap *);
2256 __private_extern__ int pf_socket_lookup(int, struct pf_pdesc *);
2257 __private_extern__ struct pf_state_key *pf_alloc_state_key(struct pf_state *,
2258 struct pf_state_key *);
2259 __private_extern__ void pfr_initialize(void);
2260 __private_extern__ int pfr_match_addr(struct pfr_ktable *, struct pf_addr *,
2261 sa_family_t);
2262 __private_extern__ void pfr_update_stats(struct pfr_ktable *, struct pf_addr *,
2263 sa_family_t, u_int64_t, int, int, int);
2264 __private_extern__ int pfr_pool_get(struct pfr_ktable *, int *,
2265 struct pf_addr *, struct pf_addr **, struct pf_addr **, sa_family_t);
2266 __private_extern__ void pfr_dynaddr_update(struct pfr_ktable *,
2267 struct pfi_dynaddr *);
2268 __private_extern__ void pfr_table_copyin_cleanup(struct pfr_table *);
2269 __private_extern__ struct pfr_ktable *pfr_attach_table(struct pf_ruleset *,
2270 char *);
2271 __private_extern__ void pfr_detach_table(struct pfr_ktable *);
2272 __private_extern__ int pfr_clr_tables(struct pfr_table *, int *, int);
2273 __private_extern__ int pfr_add_tables(user_addr_t, int, int *, int);
2274 __private_extern__ int pfr_del_tables(user_addr_t, int, int *, int);
2275 __private_extern__ int pfr_get_tables(struct pfr_table *, user_addr_t,
2276 int *, int);
2277 __private_extern__ int pfr_get_tstats(struct pfr_table *, user_addr_t,
2278 int *, int);
2279 __private_extern__ int pfr_clr_tstats(user_addr_t, int, int *, int);
2280 __private_extern__ int pfr_set_tflags(user_addr_t, int, int, int, int *,
2281 int *, int);
2282 __private_extern__ int pfr_clr_addrs(struct pfr_table *, int *, int);
2283 __private_extern__ int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *,
2284 u_int64_t);
2285 __private_extern__ int pfr_add_addrs(struct pfr_table *, user_addr_t,
2286 int, int *, int);
2287 __private_extern__ int pfr_del_addrs(struct pfr_table *, user_addr_t,
2288 int, int *, int);
2289 __private_extern__ int pfr_set_addrs(struct pfr_table *, user_addr_t,
2290 int, int *, int *, int *, int *, int, u_int32_t);
2291 __private_extern__ int pfr_get_addrs(struct pfr_table *, user_addr_t,
2292 int *, int);
2293 __private_extern__ int pfr_get_astats(struct pfr_table *, user_addr_t,
2294 int *, int);
2295 __private_extern__ int pfr_clr_astats(struct pfr_table *, user_addr_t,
2296 int, int *, int);
2297 __private_extern__ int pfr_tst_addrs(struct pfr_table *, user_addr_t,
2298 int, int *, int);
2299 __private_extern__ int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *,
2300 int);
2301 __private_extern__ int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *,
2302 int);
2303 __private_extern__ int pfr_ina_commit(struct pfr_table *, u_int32_t, int *,
2304 int *, int);
2305 __private_extern__ int pfr_ina_define(struct pfr_table *, user_addr_t,
2306 int, int *, int *, u_int32_t, int);
2307
2308 extern struct pfi_kif *pfi_all;
2309
2310 __private_extern__ void pfi_initialize(void);
2311 __private_extern__ struct pfi_kif *pfi_kif_get(const char *);
2312 __private_extern__ void pfi_kif_ref(struct pfi_kif *, enum pfi_kif_refs);
2313 __private_extern__ void pfi_kif_unref(struct pfi_kif *, enum pfi_kif_refs);
2314 __private_extern__ int pfi_kif_match(struct pfi_kif *, struct pfi_kif *);
2315 __private_extern__ void pfi_attach_ifnet(struct ifnet *);
2316 __private_extern__ void pfi_detach_ifnet(struct ifnet *);
2317 __private_extern__ int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *,
2318 sa_family_t);
2319 __private_extern__ int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t);
2320 __private_extern__ void pfi_dynaddr_remove(struct pf_addr_wrap *);
2321 __private_extern__ void pfi_dynaddr_copyout(struct pf_addr_wrap *);
2322 __private_extern__ void pfi_update_status(const char *, struct pf_status *);
2323 __private_extern__ int pfi_get_ifaces(const char *, user_addr_t, int *);
2324 __private_extern__ int pfi_set_flags(const char *, int);
2325 __private_extern__ int pfi_clear_flags(const char *, int);
2326
2327 __private_extern__ u_int16_t pf_tagname2tag(char *);
2328 __private_extern__ void pf_tag2tagname(u_int16_t, char *);
2329 __private_extern__ void pf_tag_ref(u_int16_t);
2330 __private_extern__ void pf_tag_unref(u_int16_t);
2331 __private_extern__ int pf_tag_packet(pbuf_t *, struct pf_mtag *,
2332 int, unsigned int, struct pf_pdesc *);
2333 __private_extern__ void pf_step_into_anchor(int *, struct pf_ruleset **, int,
2334 struct pf_rule **, struct pf_rule **, int *);
2335 __private_extern__ int pf_step_out_of_anchor(int *, struct pf_ruleset **, int,
2336 struct pf_rule **, struct pf_rule **, int *);
2337 __private_extern__ u_int32_t pf_qname2qid(char *);
2338 __private_extern__ void pf_qid2qname(u_int32_t, char *);
2339 __private_extern__ void pf_qid_unref(u_int32_t);
2340
2341 extern struct pf_status pf_status;
2342 extern struct pool pf_frent_pl, pf_frag_pl;
2343
2344 struct pf_pool_limit {
2345 void *pp;
2346 unsigned limit;
2347 };
2348 extern struct pf_pool_limit pf_pool_limits[PF_LIMIT_MAX];
2349
2350 __private_extern__ int pf_af_hook(struct ifnet *, struct mbuf **,
2351 struct mbuf **, unsigned int, int, struct ip_fw_args *);
2352 __private_extern__ int pf_ifaddr_hook(struct ifnet *);
2353 __private_extern__ void pf_ifnet_hook(struct ifnet *, int);
2354
2355 /*
2356 * The following are defined with "private extern" storage class for
2357 * kernel, and "extern" for user-space.
2358 */
2359 extern struct pf_anchor_global pf_anchors;
2360 extern struct pf_anchor pf_main_anchor;
2361 #define pf_main_ruleset pf_main_anchor.ruleset
2362
2363 extern int pf_is_enabled;
2364 extern int16_t pf_nat64_configured;
2365 #define PF_IS_ENABLED (pf_is_enabled != 0)
2366 extern u_int32_t pf_hash_seed;
2367
2368 /* these ruleset functions can be linked into userland programs (pfctl) */
2369 __private_extern__ int pf_get_ruleset_number(u_int8_t);
2370 __private_extern__ void pf_init_ruleset(struct pf_ruleset *);
2371 __private_extern__ int pf_anchor_setup(struct pf_rule *,
2372 const struct pf_ruleset *, const char *);
2373 __private_extern__ int pf_anchor_copyout(const struct pf_ruleset *,
2374 const struct pf_rule *, struct pfioc_rule *);
2375 __private_extern__ void pf_anchor_remove(struct pf_rule *);
2376 __private_extern__ void pf_remove_if_empty_ruleset(struct pf_ruleset *);
2377 __private_extern__ struct pf_anchor *pf_find_anchor(const char *);
2378 __private_extern__ struct pf_ruleset *pf_find_ruleset(const char *);
2379 __private_extern__ struct pf_ruleset *pf_find_ruleset_with_owner(const char *,
2380 const char *, int, int *);
2381 __private_extern__ struct pf_ruleset *pf_find_or_create_ruleset(const char *);
2382 __private_extern__ void pf_rs_initialize(void);
2383
2384 __private_extern__ int pf_osfp_add(struct pf_osfp_ioctl *);
2385 __private_extern__ struct pf_osfp_enlist *pf_osfp_fingerprint(struct pf_pdesc *,
2386 pbuf_t *, int, const struct tcphdr *);
2387 __private_extern__ struct pf_osfp_enlist *pf_osfp_fingerprint_hdr(
2388 const struct ip *, const struct ip6_hdr *, const struct tcphdr *);
2389 __private_extern__ void pf_osfp_flush(void);
2390 __private_extern__ int pf_osfp_get(struct pf_osfp_ioctl *);
2391 __private_extern__ void pf_osfp_initialize(void);
2392 __private_extern__ int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t);
2393 __private_extern__ struct pf_os_fingerprint *pf_osfp_validate(void);
2394 __private_extern__ struct pf_mtag *pf_find_mtag(struct mbuf *);
2395 __private_extern__ struct pf_mtag *pf_find_mtag_pbuf(pbuf_t *);
2396 __private_extern__ struct pf_mtag *pf_get_mtag(struct mbuf *);
2397 __private_extern__ struct pf_mtag *pf_get_mtag_pbuf(pbuf_t *);
2398 __private_extern__ struct pf_fragment_tag * pf_find_fragment_tag_pbuf(pbuf_t *);
2399 __private_extern__ struct pf_fragment_tag * pf_find_fragment_tag(struct mbuf *);
2400 __private_extern__ struct pf_fragment_tag * pf_copy_fragment_tag(struct mbuf *,
2401 struct pf_fragment_tag *, int);
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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