1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2001 Daniel Hartmeier
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
11 * - Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * - Redistributions in binary form must reproduce the above
14 * copyright notice, this list of conditions and the following
15 * disclaimer in the documentation and/or other materials provided
16 * with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
21 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
22 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
24 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
25 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
26 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
28 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 *
31 * $OpenBSD: pfvar.h,v 1.282 2009/01/29 15:12:28 pyr Exp $
32 * $FreeBSD$
33 */
34
35 #ifndef _NET_PFVAR_H_
36 #define _NET_PFVAR_H_
37
38 #include <sys/param.h>
39 #include <sys/queue.h>
40 #include <sys/counter.h>
41 #include <sys/cpuset.h>
42 #include <sys/malloc.h>
43 #include <sys/refcount.h>
44 #include <sys/sysctl.h>
45 #include <sys/lock.h>
46 #include <sys/rmlock.h>
47 #include <sys/tree.h>
48 #include <vm/uma.h>
49
50 #include <net/radix.h>
51 #include <netinet/in.h>
52
53 #include <netpfil/pf/pf.h>
54 #include <netpfil/pf/pf_altq.h>
55 #include <netpfil/pf/pf_mtag.h>
56
57 struct pf_addr {
58 union {
59 struct in_addr v4;
60 struct in6_addr v6;
61 u_int8_t addr8[16];
62 u_int16_t addr16[8];
63 u_int32_t addr32[4];
64 } pfa; /* 128-bit address */
65 #define v4 pfa.v4
66 #define v6 pfa.v6
67 #define addr8 pfa.addr8
68 #define addr16 pfa.addr16
69 #define addr32 pfa.addr32
70 };
71
72 #define PFI_AFLAG_NETWORK 0x01
73 #define PFI_AFLAG_BROADCAST 0x02
74 #define PFI_AFLAG_PEER 0x04
75 #define PFI_AFLAG_MODEMASK 0x07
76 #define PFI_AFLAG_NOALIAS 0x08
77
78 struct pf_addr_wrap {
79 union {
80 struct {
81 struct pf_addr addr;
82 struct pf_addr mask;
83 } a;
84 char ifname[IFNAMSIZ];
85 char tblname[PF_TABLE_NAME_SIZE];
86 } v;
87 union {
88 struct pfi_dynaddr *dyn;
89 struct pfr_ktable *tbl;
90 int dyncnt;
91 int tblcnt;
92 } p;
93 u_int8_t type; /* PF_ADDR_* */
94 u_int8_t iflags; /* PFI_AFLAG_* */
95 };
96
97 #ifdef _KERNEL
98
99 SYSCTL_DECL(_net_pf);
100 MALLOC_DECLARE(M_PFHASH);
101
102 struct pfi_dynaddr {
103 TAILQ_ENTRY(pfi_dynaddr) entry;
104 struct pf_addr pfid_addr4;
105 struct pf_addr pfid_mask4;
106 struct pf_addr pfid_addr6;
107 struct pf_addr pfid_mask6;
108 struct pfr_ktable *pfid_kt;
109 struct pfi_kif *pfid_kif;
110 int pfid_net; /* mask or 128 */
111 int pfid_acnt4; /* address count IPv4 */
112 int pfid_acnt6; /* address count IPv6 */
113 sa_family_t pfid_af; /* rule af */
114 u_int8_t pfid_iflags; /* PFI_AFLAG_* */
115 };
116
117 /*
118 * Address manipulation macros
119 */
120 #define HTONL(x) (x) = htonl((__uint32_t)(x))
121 #define HTONS(x) (x) = htons((__uint16_t)(x))
122 #define NTOHL(x) (x) = ntohl((__uint32_t)(x))
123 #define NTOHS(x) (x) = ntohs((__uint16_t)(x))
124
125 #define PF_NAME "pf"
126
127 #define PF_HASHROW_ASSERT(h) mtx_assert(&(h)->lock, MA_OWNED)
128 #define PF_HASHROW_LOCK(h) mtx_lock(&(h)->lock)
129 #define PF_HASHROW_UNLOCK(h) mtx_unlock(&(h)->lock)
130
131 #define PF_STATE_LOCK(s) \
132 do { \
133 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(s)]; \
134 PF_HASHROW_LOCK(_ih); \
135 } while (0)
136
137 #define PF_STATE_UNLOCK(s) \
138 do { \
139 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH((s))]; \
140 PF_HASHROW_UNLOCK(_ih); \
141 } while (0)
142
143 #ifdef INVARIANTS
144 #define PF_STATE_LOCK_ASSERT(s) \
145 do { \
146 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(s)]; \
147 PF_HASHROW_ASSERT(_ih); \
148 } while (0)
149 #else /* !INVARIANTS */
150 #define PF_STATE_LOCK_ASSERT(s) do {} while (0)
151 #endif /* INVARIANTS */
152
153 extern struct mtx pf_unlnkdrules_mtx;
154 #define PF_UNLNKDRULES_LOCK() mtx_lock(&pf_unlnkdrules_mtx)
155 #define PF_UNLNKDRULES_UNLOCK() mtx_unlock(&pf_unlnkdrules_mtx)
156
157 extern struct rmlock pf_rules_lock;
158 #define PF_RULES_RLOCK_TRACKER struct rm_priotracker _pf_rules_tracker
159 #define PF_RULES_RLOCK() rm_rlock(&pf_rules_lock, &_pf_rules_tracker)
160 #define PF_RULES_RUNLOCK() rm_runlock(&pf_rules_lock, &_pf_rules_tracker)
161 #define PF_RULES_WLOCK() rm_wlock(&pf_rules_lock)
162 #define PF_RULES_WUNLOCK() rm_wunlock(&pf_rules_lock)
163 #define PF_RULES_ASSERT() rm_assert(&pf_rules_lock, RA_LOCKED)
164 #define PF_RULES_RASSERT() rm_assert(&pf_rules_lock, RA_RLOCKED)
165 #define PF_RULES_WASSERT() rm_assert(&pf_rules_lock, RA_WLOCKED)
166
167 extern struct sx pf_end_lock;
168
169 #define PF_MODVER 1
170 #define PFLOG_MODVER 1
171 #define PFSYNC_MODVER 1
172
173 #define PFLOG_MINVER 1
174 #define PFLOG_PREFVER PFLOG_MODVER
175 #define PFLOG_MAXVER 1
176 #define PFSYNC_MINVER 1
177 #define PFSYNC_PREFVER PFSYNC_MODVER
178 #define PFSYNC_MAXVER 1
179
180 #ifdef INET
181 #ifndef INET6
182 #define PF_INET_ONLY
183 #endif /* ! INET6 */
184 #endif /* INET */
185
186 #ifdef INET6
187 #ifndef INET
188 #define PF_INET6_ONLY
189 #endif /* ! INET */
190 #endif /* INET6 */
191
192 #ifdef INET
193 #ifdef INET6
194 #define PF_INET_INET6
195 #endif /* INET6 */
196 #endif /* INET */
197
198 #else
199
200 #define PF_INET_INET6
201
202 #endif /* _KERNEL */
203
204 /* Both IPv4 and IPv6 */
205 #ifdef PF_INET_INET6
206
207 #define PF_AEQ(a, b, c) \
208 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \
209 (c == AF_INET6 && (a)->addr32[3] == (b)->addr32[3] && \
210 (a)->addr32[2] == (b)->addr32[2] && \
211 (a)->addr32[1] == (b)->addr32[1] && \
212 (a)->addr32[0] == (b)->addr32[0])) \
213
214 #define PF_ANEQ(a, b, c) \
215 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \
216 (c == AF_INET6 && ((a)->addr32[0] != (b)->addr32[0] || \
217 (a)->addr32[1] != (b)->addr32[1] || \
218 (a)->addr32[2] != (b)->addr32[2] || \
219 (a)->addr32[3] != (b)->addr32[3]))) \
220
221 #define PF_AZERO(a, c) \
222 ((c == AF_INET && !(a)->addr32[0]) || \
223 (c == AF_INET6 && !(a)->addr32[0] && !(a)->addr32[1] && \
224 !(a)->addr32[2] && !(a)->addr32[3] )) \
225
226 #define PF_MATCHA(n, a, m, b, f) \
227 pf_match_addr(n, a, m, b, f)
228
229 #define PF_ACPY(a, b, f) \
230 pf_addrcpy(a, b, f)
231
232 #define PF_AINC(a, f) \
233 pf_addr_inc(a, f)
234
235 #define PF_POOLMASK(a, b, c, d, f) \
236 pf_poolmask(a, b, c, d, f)
237
238 #else
239
240 /* Just IPv6 */
241
242 #ifdef PF_INET6_ONLY
243
244 #define PF_AEQ(a, b, c) \
245 ((a)->addr32[3] == (b)->addr32[3] && \
246 (a)->addr32[2] == (b)->addr32[2] && \
247 (a)->addr32[1] == (b)->addr32[1] && \
248 (a)->addr32[0] == (b)->addr32[0]) \
249
250 #define PF_ANEQ(a, b, c) \
251 ((a)->addr32[3] != (b)->addr32[3] || \
252 (a)->addr32[2] != (b)->addr32[2] || \
253 (a)->addr32[1] != (b)->addr32[1] || \
254 (a)->addr32[0] != (b)->addr32[0]) \
255
256 #define PF_AZERO(a, c) \
257 (!(a)->addr32[0] && \
258 !(a)->addr32[1] && \
259 !(a)->addr32[2] && \
260 !(a)->addr32[3] ) \
261
262 #define PF_MATCHA(n, a, m, b, f) \
263 pf_match_addr(n, a, m, b, f)
264
265 #define PF_ACPY(a, b, f) \
266 pf_addrcpy(a, b, f)
267
268 #define PF_AINC(a, f) \
269 pf_addr_inc(a, f)
270
271 #define PF_POOLMASK(a, b, c, d, f) \
272 pf_poolmask(a, b, c, d, f)
273
274 #else
275
276 /* Just IPv4 */
277 #ifdef PF_INET_ONLY
278
279 #define PF_AEQ(a, b, c) \
280 ((a)->addr32[0] == (b)->addr32[0])
281
282 #define PF_ANEQ(a, b, c) \
283 ((a)->addr32[0] != (b)->addr32[0])
284
285 #define PF_AZERO(a, c) \
286 (!(a)->addr32[0])
287
288 #define PF_MATCHA(n, a, m, b, f) \
289 pf_match_addr(n, a, m, b, f)
290
291 #define PF_ACPY(a, b, f) \
292 (a)->v4.s_addr = (b)->v4.s_addr
293
294 #define PF_AINC(a, f) \
295 do { \
296 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \
297 } while (0)
298
299 #define PF_POOLMASK(a, b, c, d, f) \
300 do { \
301 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \
302 (((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \
303 } while (0)
304
305 #endif /* PF_INET_ONLY */
306 #endif /* PF_INET6_ONLY */
307 #endif /* PF_INET_INET6 */
308
309 /*
310 * XXX callers not FIB-aware in our version of pf yet.
311 * OpenBSD fixed it later it seems, 2010/05/07 13:33:16 claudio.
312 */
313 #define PF_MISMATCHAW(aw, x, af, neg, ifp, rtid) \
314 ( \
315 (((aw)->type == PF_ADDR_NOROUTE && \
316 pf_routable((x), (af), NULL, (rtid))) || \
317 (((aw)->type == PF_ADDR_URPFFAILED && (ifp) != NULL && \
318 pf_routable((x), (af), (ifp), (rtid))) || \
319 ((aw)->type == PF_ADDR_TABLE && \
320 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \
321 ((aw)->type == PF_ADDR_DYNIFTL && \
322 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \
323 ((aw)->type == PF_ADDR_RANGE && \
324 !pf_match_addr_range(&(aw)->v.a.addr, \
325 &(aw)->v.a.mask, (x), (af))) || \
326 ((aw)->type == PF_ADDR_ADDRMASK && \
327 !PF_AZERO(&(aw)->v.a.mask, (af)) && \
328 !PF_MATCHA(0, &(aw)->v.a.addr, \
329 &(aw)->v.a.mask, (x), (af))))) != \
330 (neg) \
331 )
332
333
334 struct pf_rule_uid {
335 uid_t uid[2];
336 u_int8_t op;
337 };
338
339 struct pf_rule_gid {
340 uid_t gid[2];
341 u_int8_t op;
342 };
343
344 struct pf_rule_addr {
345 struct pf_addr_wrap addr;
346 u_int16_t port[2];
347 u_int8_t neg;
348 u_int8_t port_op;
349 };
350
351 struct pf_pooladdr {
352 struct pf_addr_wrap addr;
353 TAILQ_ENTRY(pf_pooladdr) entries;
354 char ifname[IFNAMSIZ];
355 struct pfi_kif *kif;
356 };
357
358 TAILQ_HEAD(pf_palist, pf_pooladdr);
359
360 struct pf_poolhashkey {
361 union {
362 u_int8_t key8[16];
363 u_int16_t key16[8];
364 u_int32_t key32[4];
365 } pfk; /* 128-bit hash key */
366 #define key8 pfk.key8
367 #define key16 pfk.key16
368 #define key32 pfk.key32
369 };
370
371 struct pf_pool {
372 struct pf_palist list;
373 struct pf_pooladdr *cur;
374 struct pf_poolhashkey key;
375 struct pf_addr counter;
376 int tblidx;
377 u_int16_t proxy_port[2];
378 u_int8_t opts;
379 };
380
381
382 /* A packed Operating System description for fingerprinting */
383 typedef u_int32_t pf_osfp_t;
384 #define PF_OSFP_ANY ((pf_osfp_t)0)
385 #define PF_OSFP_UNKNOWN ((pf_osfp_t)-1)
386 #define PF_OSFP_NOMATCH ((pf_osfp_t)-2)
387
388 struct pf_osfp_entry {
389 SLIST_ENTRY(pf_osfp_entry) fp_entry;
390 pf_osfp_t fp_os;
391 int fp_enflags;
392 #define PF_OSFP_EXPANDED 0x001 /* expanded entry */
393 #define PF_OSFP_GENERIC 0x002 /* generic signature */
394 #define PF_OSFP_NODETAIL 0x004 /* no p0f details */
395 #define PF_OSFP_LEN 32
396 char fp_class_nm[PF_OSFP_LEN];
397 char fp_version_nm[PF_OSFP_LEN];
398 char fp_subtype_nm[PF_OSFP_LEN];
399 };
400 #define PF_OSFP_ENTRY_EQ(a, b) \
401 ((a)->fp_os == (b)->fp_os && \
402 memcmp((a)->fp_class_nm, (b)->fp_class_nm, PF_OSFP_LEN) == 0 && \
403 memcmp((a)->fp_version_nm, (b)->fp_version_nm, PF_OSFP_LEN) == 0 && \
404 memcmp((a)->fp_subtype_nm, (b)->fp_subtype_nm, PF_OSFP_LEN) == 0)
405
406 /* handle pf_osfp_t packing */
407 #define _FP_RESERVED_BIT 1 /* For the special negative #defines */
408 #define _FP_UNUSED_BITS 1
409 #define _FP_CLASS_BITS 10 /* OS Class (Windows, Linux) */
410 #define _FP_VERSION_BITS 10 /* OS version (95, 98, NT, 2.4.54, 3.2) */
411 #define _FP_SUBTYPE_BITS 10 /* patch level (NT SP4, SP3, ECN patch) */
412 #define PF_OSFP_UNPACK(osfp, class, version, subtype) do { \
413 (class) = ((osfp) >> (_FP_VERSION_BITS+_FP_SUBTYPE_BITS)) & \
414 ((1 << _FP_CLASS_BITS) - 1); \
415 (version) = ((osfp) >> _FP_SUBTYPE_BITS) & \
416 ((1 << _FP_VERSION_BITS) - 1);\
417 (subtype) = (osfp) & ((1 << _FP_SUBTYPE_BITS) - 1); \
418 } while(0)
419 #define PF_OSFP_PACK(osfp, class, version, subtype) do { \
420 (osfp) = ((class) & ((1 << _FP_CLASS_BITS) - 1)) << (_FP_VERSION_BITS \
421 + _FP_SUBTYPE_BITS); \
422 (osfp) |= ((version) & ((1 << _FP_VERSION_BITS) - 1)) << \
423 _FP_SUBTYPE_BITS; \
424 (osfp) |= (subtype) & ((1 << _FP_SUBTYPE_BITS) - 1); \
425 } while(0)
426
427 /* the fingerprint of an OSes TCP SYN packet */
428 typedef u_int64_t pf_tcpopts_t;
429 struct pf_os_fingerprint {
430 SLIST_HEAD(pf_osfp_enlist, pf_osfp_entry) fp_oses; /* list of matches */
431 pf_tcpopts_t fp_tcpopts; /* packed TCP options */
432 u_int16_t fp_wsize; /* TCP window size */
433 u_int16_t fp_psize; /* ip->ip_len */
434 u_int16_t fp_mss; /* TCP MSS */
435 u_int16_t fp_flags;
436 #define PF_OSFP_WSIZE_MOD 0x0001 /* Window modulus */
437 #define PF_OSFP_WSIZE_DC 0x0002 /* Window don't care */
438 #define PF_OSFP_WSIZE_MSS 0x0004 /* Window multiple of MSS */
439 #define PF_OSFP_WSIZE_MTU 0x0008 /* Window multiple of MTU */
440 #define PF_OSFP_PSIZE_MOD 0x0010 /* packet size modulus */
441 #define PF_OSFP_PSIZE_DC 0x0020 /* packet size don't care */
442 #define PF_OSFP_WSCALE 0x0040 /* TCP window scaling */
443 #define PF_OSFP_WSCALE_MOD 0x0080 /* TCP window scale modulus */
444 #define PF_OSFP_WSCALE_DC 0x0100 /* TCP window scale dont-care */
445 #define PF_OSFP_MSS 0x0200 /* TCP MSS */
446 #define PF_OSFP_MSS_MOD 0x0400 /* TCP MSS modulus */
447 #define PF_OSFP_MSS_DC 0x0800 /* TCP MSS dont-care */
448 #define PF_OSFP_DF 0x1000 /* IPv4 don't fragment bit */
449 #define PF_OSFP_TS0 0x2000 /* Zero timestamp */
450 #define PF_OSFP_INET6 0x4000 /* IPv6 */
451 u_int8_t fp_optcnt; /* TCP option count */
452 u_int8_t fp_wscale; /* TCP window scaling */
453 u_int8_t fp_ttl; /* IPv4 TTL */
454 #define PF_OSFP_MAXTTL_OFFSET 40
455 /* TCP options packing */
456 #define PF_OSFP_TCPOPT_NOP 0x0 /* TCP NOP option */
457 #define PF_OSFP_TCPOPT_WSCALE 0x1 /* TCP window scaling option */
458 #define PF_OSFP_TCPOPT_MSS 0x2 /* TCP max segment size opt */
459 #define PF_OSFP_TCPOPT_SACK 0x3 /* TCP SACK OK option */
460 #define PF_OSFP_TCPOPT_TS 0x4 /* TCP timestamp option */
461 #define PF_OSFP_TCPOPT_BITS 3 /* bits used by each option */
462 #define PF_OSFP_MAX_OPTS \
463 (sizeof(((struct pf_os_fingerprint *)0)->fp_tcpopts) * 8) \
464 / PF_OSFP_TCPOPT_BITS
465
466 SLIST_ENTRY(pf_os_fingerprint) fp_next;
467 };
468
469 struct pf_osfp_ioctl {
470 struct pf_osfp_entry fp_os;
471 pf_tcpopts_t fp_tcpopts; /* packed TCP options */
472 u_int16_t fp_wsize; /* TCP window size */
473 u_int16_t fp_psize; /* ip->ip_len */
474 u_int16_t fp_mss; /* TCP MSS */
475 u_int16_t fp_flags;
476 u_int8_t fp_optcnt; /* TCP option count */
477 u_int8_t fp_wscale; /* TCP window scaling */
478 u_int8_t fp_ttl; /* IPv4 TTL */
479
480 int fp_getnum; /* DIOCOSFPGET number */
481 };
482
483
484 union pf_rule_ptr {
485 struct pf_rule *ptr;
486 u_int32_t nr;
487 };
488
489 #define PF_ANCHOR_NAME_SIZE 64
490
491 struct pf_rule {
492 struct pf_rule_addr src;
493 struct pf_rule_addr dst;
494 #define PF_SKIP_IFP 0
495 #define PF_SKIP_DIR 1
496 #define PF_SKIP_AF 2
497 #define PF_SKIP_PROTO 3
498 #define PF_SKIP_SRC_ADDR 4
499 #define PF_SKIP_SRC_PORT 5
500 #define PF_SKIP_DST_ADDR 6
501 #define PF_SKIP_DST_PORT 7
502 #define PF_SKIP_COUNT 8
503 union pf_rule_ptr skip[PF_SKIP_COUNT];
504 #define PF_RULE_LABEL_SIZE 64
505 char label[PF_RULE_LABEL_SIZE];
506 char ifname[IFNAMSIZ];
507 char qname[PF_QNAME_SIZE];
508 char pqname[PF_QNAME_SIZE];
509 #define PF_TAG_NAME_SIZE 64
510 char tagname[PF_TAG_NAME_SIZE];
511 char match_tagname[PF_TAG_NAME_SIZE];
512
513 char overload_tblname[PF_TABLE_NAME_SIZE];
514
515 TAILQ_ENTRY(pf_rule) entries;
516 struct pf_pool rpool;
517
518 u_int64_t evaluations;
519 u_int64_t packets[2];
520 u_int64_t bytes[2];
521
522 struct pfi_kif *kif;
523 struct pf_anchor *anchor;
524 struct pfr_ktable *overload_tbl;
525
526 pf_osfp_t os_fingerprint;
527
528 int rtableid;
529 u_int32_t timeout[PFTM_MAX];
530 u_int32_t max_states;
531 u_int32_t max_src_nodes;
532 u_int32_t max_src_states;
533 u_int32_t max_src_conn;
534 struct {
535 u_int32_t limit;
536 u_int32_t seconds;
537 } max_src_conn_rate;
538 u_int32_t qid;
539 u_int32_t pqid;
540 u_int32_t rt_listid;
541 u_int32_t nr;
542 u_int32_t prob;
543 uid_t cuid;
544 pid_t cpid;
545
546 counter_u64_t states_cur;
547 counter_u64_t states_tot;
548 counter_u64_t src_nodes;
549
550 u_int16_t return_icmp;
551 u_int16_t return_icmp6;
552 u_int16_t max_mss;
553 u_int16_t tag;
554 u_int16_t match_tag;
555 u_int16_t scrub_flags;
556
557 struct pf_rule_uid uid;
558 struct pf_rule_gid gid;
559
560 u_int32_t rule_flag;
561 u_int8_t action;
562 u_int8_t direction;
563 u_int8_t log;
564 u_int8_t logif;
565 u_int8_t quick;
566 u_int8_t ifnot;
567 u_int8_t match_tag_not;
568 u_int8_t natpass;
569
570 #define PF_STATE_NORMAL 0x1
571 #define PF_STATE_MODULATE 0x2
572 #define PF_STATE_SYNPROXY 0x3
573 u_int8_t keep_state;
574 sa_family_t af;
575 u_int8_t proto;
576 u_int8_t type;
577 u_int8_t code;
578 u_int8_t flags;
579 u_int8_t flagset;
580 u_int8_t min_ttl;
581 u_int8_t allow_opts;
582 u_int8_t rt;
583 u_int8_t return_ttl;
584 u_int8_t tos;
585 u_int8_t set_tos;
586 u_int8_t anchor_relative;
587 u_int8_t anchor_wildcard;
588
589 #define PF_FLUSH 0x01
590 #define PF_FLUSH_GLOBAL 0x02
591 u_int8_t flush;
592 #define PF_PRIO_ZERO 0xff /* match "prio 0" packets */
593 #define PF_PRIO_MAX 7
594 u_int8_t prio;
595 u_int8_t set_prio[2];
596
597 struct {
598 struct pf_addr addr;
599 u_int16_t port;
600 } divert;
601
602 uint64_t u_states_cur;
603 uint64_t u_states_tot;
604 uint64_t u_src_nodes;
605 };
606
607 /* rule flags */
608 #define PFRULE_DROP 0x0000
609 #define PFRULE_RETURNRST 0x0001
610 #define PFRULE_FRAGMENT 0x0002
611 #define PFRULE_RETURNICMP 0x0004
612 #define PFRULE_RETURN 0x0008
613 #define PFRULE_NOSYNC 0x0010
614 #define PFRULE_SRCTRACK 0x0020 /* track source states */
615 #define PFRULE_RULESRCTRACK 0x0040 /* per rule */
616 #define PFRULE_REFS 0x0080 /* rule has references */
617
618 /* scrub flags */
619 #define PFRULE_NODF 0x0100
620 #define PFRULE_RANDOMID 0x0800
621 #define PFRULE_REASSEMBLE_TCP 0x1000
622 #define PFRULE_SET_TOS 0x2000
623
624 /* rule flags again */
625 #define PFRULE_IFBOUND 0x00010000 /* if-bound */
626 #define PFRULE_STATESLOPPY 0x00020000 /* sloppy state tracking */
627
628 #define PFSTATE_HIWAT 100000 /* default state table size */
629 #define PFSTATE_ADAPT_START 60000 /* default adaptive timeout start */
630 #define PFSTATE_ADAPT_END 120000 /* default adaptive timeout end */
631
632
633 struct pf_threshold {
634 u_int32_t limit;
635 #define PF_THRESHOLD_MULT 1000
636 #define PF_THRESHOLD_MAX 0xffffffff / PF_THRESHOLD_MULT
637 u_int32_t seconds;
638 u_int32_t count;
639 u_int32_t last;
640 };
641
642 struct pf_src_node {
643 LIST_ENTRY(pf_src_node) entry;
644 struct pf_addr addr;
645 struct pf_addr raddr;
646 union pf_rule_ptr rule;
647 struct pfi_kif *kif;
648 u_int64_t bytes[2];
649 u_int64_t packets[2];
650 u_int32_t states;
651 u_int32_t conn;
652 struct pf_threshold conn_rate;
653 u_int32_t creation;
654 u_int32_t expire;
655 sa_family_t af;
656 u_int8_t ruletype;
657 };
658
659 #define PFSNODE_HIWAT 10000 /* default source node table size */
660
661 struct pf_state_scrub {
662 struct timeval pfss_last; /* time received last packet */
663 u_int32_t pfss_tsecr; /* last echoed timestamp */
664 u_int32_t pfss_tsval; /* largest timestamp */
665 u_int32_t pfss_tsval0; /* original timestamp */
666 u_int16_t pfss_flags;
667 #define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */
668 #define PFSS_PAWS 0x0010 /* stricter PAWS checks */
669 #define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */
670 #define PFSS_DATA_TS 0x0040 /* timestamp on data packets */
671 #define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */
672 u_int8_t pfss_ttl; /* stashed TTL */
673 u_int8_t pad;
674 u_int32_t pfss_ts_mod; /* timestamp modulation */
675 };
676
677 struct pf_state_host {
678 struct pf_addr addr;
679 u_int16_t port;
680 u_int16_t pad;
681 };
682
683 struct pf_state_peer {
684 struct pf_state_scrub *scrub; /* state is scrubbed */
685 u_int32_t seqlo; /* Max sequence number sent */
686 u_int32_t seqhi; /* Max the other end ACKd + win */
687 u_int32_t seqdiff; /* Sequence number modulator */
688 u_int16_t max_win; /* largest window (pre scaling) */
689 u_int16_t mss; /* Maximum segment size option */
690 u_int8_t state; /* active state level */
691 u_int8_t wscale; /* window scaling factor */
692 u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */
693 u_int8_t pad[1];
694 };
695
696 /* Keep synced with struct pf_state_key. */
697 struct pf_state_key_cmp {
698 struct pf_addr addr[2];
699 u_int16_t port[2];
700 sa_family_t af;
701 u_int8_t proto;
702 u_int8_t pad[2];
703 };
704
705 struct pf_state_key {
706 struct pf_addr addr[2];
707 u_int16_t port[2];
708 sa_family_t af;
709 u_int8_t proto;
710 u_int8_t pad[2];
711
712 LIST_ENTRY(pf_state_key) entry;
713 TAILQ_HEAD(, pf_state) states[2];
714 };
715
716 /* Keep synced with struct pf_state. */
717 struct pf_state_cmp {
718 u_int64_t id;
719 u_int32_t creatorid;
720 u_int8_t direction;
721 u_int8_t pad[3];
722 };
723
724 struct pf_state {
725 u_int64_t id;
726 u_int32_t creatorid;
727 u_int8_t direction;
728 u_int8_t pad[3];
729
730 u_int refs;
731 TAILQ_ENTRY(pf_state) sync_list;
732 TAILQ_ENTRY(pf_state) key_list[2];
733 LIST_ENTRY(pf_state) entry;
734 struct pf_state_peer src;
735 struct pf_state_peer dst;
736 union pf_rule_ptr rule;
737 union pf_rule_ptr anchor;
738 union pf_rule_ptr nat_rule;
739 struct pf_addr rt_addr;
740 struct pf_state_key *key[2]; /* addresses stack and wire */
741 struct pfi_kif *kif;
742 struct pfi_kif *rt_kif;
743 struct pf_src_node *src_node;
744 struct pf_src_node *nat_src_node;
745 u_int64_t packets[2];
746 u_int64_t bytes[2];
747 u_int32_t creation;
748 u_int32_t expire;
749 u_int32_t pfsync_time;
750 u_int16_t tag;
751 u_int8_t log;
752 u_int8_t state_flags;
753 #define PFSTATE_ALLOWOPTS 0x01
754 #define PFSTATE_SLOPPY 0x02
755 /* was PFSTATE_PFLOW 0x04 */
756 #define PFSTATE_NOSYNC 0x08
757 #define PFSTATE_ACK 0x10
758 #define PFSTATE_SETPRIO 0x0200
759 #define PFSTATE_SETMASK (PFSTATE_SETPRIO)
760 u_int8_t timeout;
761 u_int8_t sync_state; /* PFSYNC_S_x */
762
763 /* XXX */
764 u_int8_t sync_updates;
765 u_int8_t _tail[3];
766 };
767
768 /*
769 * Unified state structures for pulling states out of the kernel
770 * used by pfsync(4) and the pf(4) ioctl.
771 */
772 struct pfsync_state_scrub {
773 u_int16_t pfss_flags;
774 u_int8_t pfss_ttl; /* stashed TTL */
775 #define PFSYNC_SCRUB_FLAG_VALID 0x01
776 u_int8_t scrub_flag;
777 u_int32_t pfss_ts_mod; /* timestamp modulation */
778 } __packed;
779
780 struct pfsync_state_peer {
781 struct pfsync_state_scrub scrub; /* state is scrubbed */
782 u_int32_t seqlo; /* Max sequence number sent */
783 u_int32_t seqhi; /* Max the other end ACKd + win */
784 u_int32_t seqdiff; /* Sequence number modulator */
785 u_int16_t max_win; /* largest window (pre scaling) */
786 u_int16_t mss; /* Maximum segment size option */
787 u_int8_t state; /* active state level */
788 u_int8_t wscale; /* window scaling factor */
789 u_int8_t pad[6];
790 } __packed;
791
792 struct pfsync_state_key {
793 struct pf_addr addr[2];
794 u_int16_t port[2];
795 };
796
797 struct pfsync_state {
798 u_int64_t id;
799 char ifname[IFNAMSIZ];
800 struct pfsync_state_key key[2];
801 struct pfsync_state_peer src;
802 struct pfsync_state_peer dst;
803 struct pf_addr rt_addr;
804 u_int32_t rule;
805 u_int32_t anchor;
806 u_int32_t nat_rule;
807 u_int32_t creation;
808 u_int32_t expire;
809 u_int32_t packets[2][2];
810 u_int32_t bytes[2][2];
811 u_int32_t creatorid;
812 sa_family_t af;
813 u_int8_t proto;
814 u_int8_t direction;
815 u_int8_t __spare[2];
816 u_int8_t log;
817 u_int8_t state_flags;
818 u_int8_t timeout;
819 u_int8_t sync_flags;
820 u_int8_t updates;
821 } __packed;
822
823 #ifdef _KERNEL
824 /* pfsync */
825 typedef int pfsync_state_import_t(struct pfsync_state *, u_int8_t);
826 typedef void pfsync_insert_state_t(struct pf_state *);
827 typedef void pfsync_update_state_t(struct pf_state *);
828 typedef void pfsync_delete_state_t(struct pf_state *);
829 typedef void pfsync_clear_states_t(u_int32_t, const char *);
830 typedef int pfsync_defer_t(struct pf_state *, struct mbuf *);
831 typedef void pfsync_detach_ifnet_t(struct ifnet *);
832
833 VNET_DECLARE(pfsync_state_import_t *, pfsync_state_import_ptr);
834 #define V_pfsync_state_import_ptr VNET(pfsync_state_import_ptr)
835 VNET_DECLARE(pfsync_insert_state_t *, pfsync_insert_state_ptr);
836 #define V_pfsync_insert_state_ptr VNET(pfsync_insert_state_ptr)
837 VNET_DECLARE(pfsync_update_state_t *, pfsync_update_state_ptr);
838 #define V_pfsync_update_state_ptr VNET(pfsync_update_state_ptr)
839 VNET_DECLARE(pfsync_delete_state_t *, pfsync_delete_state_ptr);
840 #define V_pfsync_delete_state_ptr VNET(pfsync_delete_state_ptr)
841 VNET_DECLARE(pfsync_clear_states_t *, pfsync_clear_states_ptr);
842 #define V_pfsync_clear_states_ptr VNET(pfsync_clear_states_ptr)
843 VNET_DECLARE(pfsync_defer_t *, pfsync_defer_ptr);
844 #define V_pfsync_defer_ptr VNET(pfsync_defer_ptr)
845 extern pfsync_detach_ifnet_t *pfsync_detach_ifnet_ptr;
846
847 void pfsync_state_export(struct pfsync_state *,
848 struct pf_state *);
849
850 /* pflog */
851 struct pf_ruleset;
852 struct pf_pdesc;
853 typedef int pflog_packet_t(struct pfi_kif *, struct mbuf *, sa_family_t,
854 u_int8_t, u_int8_t, struct pf_rule *, struct pf_rule *,
855 struct pf_ruleset *, struct pf_pdesc *, int);
856 extern pflog_packet_t *pflog_packet_ptr;
857
858 #endif /* _KERNEL */
859
860 #define PFSYNC_FLAG_SRCNODE 0x04
861 #define PFSYNC_FLAG_NATSRCNODE 0x08
862
863 /* for copies to/from network byte order */
864 /* ioctl interface also uses network byte order */
865 #define pf_state_peer_hton(s,d) do { \
866 (d)->seqlo = htonl((s)->seqlo); \
867 (d)->seqhi = htonl((s)->seqhi); \
868 (d)->seqdiff = htonl((s)->seqdiff); \
869 (d)->max_win = htons((s)->max_win); \
870 (d)->mss = htons((s)->mss); \
871 (d)->state = (s)->state; \
872 (d)->wscale = (s)->wscale; \
873 if ((s)->scrub) { \
874 (d)->scrub.pfss_flags = \
875 htons((s)->scrub->pfss_flags & PFSS_TIMESTAMP); \
876 (d)->scrub.pfss_ttl = (s)->scrub->pfss_ttl; \
877 (d)->scrub.pfss_ts_mod = htonl((s)->scrub->pfss_ts_mod);\
878 (d)->scrub.scrub_flag = PFSYNC_SCRUB_FLAG_VALID; \
879 } \
880 } while (0)
881
882 #define pf_state_peer_ntoh(s,d) do { \
883 (d)->seqlo = ntohl((s)->seqlo); \
884 (d)->seqhi = ntohl((s)->seqhi); \
885 (d)->seqdiff = ntohl((s)->seqdiff); \
886 (d)->max_win = ntohs((s)->max_win); \
887 (d)->mss = ntohs((s)->mss); \
888 (d)->state = (s)->state; \
889 (d)->wscale = (s)->wscale; \
890 if ((s)->scrub.scrub_flag == PFSYNC_SCRUB_FLAG_VALID && \
891 (d)->scrub != NULL) { \
892 (d)->scrub->pfss_flags = \
893 ntohs((s)->scrub.pfss_flags) & PFSS_TIMESTAMP; \
894 (d)->scrub->pfss_ttl = (s)->scrub.pfss_ttl; \
895 (d)->scrub->pfss_ts_mod = ntohl((s)->scrub.pfss_ts_mod);\
896 } \
897 } while (0)
898
899 #define pf_state_counter_hton(s,d) do { \
900 d[0] = htonl((s>>32)&0xffffffff); \
901 d[1] = htonl(s&0xffffffff); \
902 } while (0)
903
904 #define pf_state_counter_from_pfsync(s) \
905 (((u_int64_t)(s[0])<<32) | (u_int64_t)(s[1]))
906
907 #define pf_state_counter_ntoh(s,d) do { \
908 d = ntohl(s[0]); \
909 d = d<<32; \
910 d += ntohl(s[1]); \
911 } while (0)
912
913 TAILQ_HEAD(pf_rulequeue, pf_rule);
914
915 struct pf_anchor;
916
917 struct pf_ruleset {
918 struct {
919 struct pf_rulequeue queues[2];
920 struct {
921 struct pf_rulequeue *ptr;
922 struct pf_rule **ptr_array;
923 u_int32_t rcount;
924 u_int32_t ticket;
925 int open;
926 } active, inactive;
927 } rules[PF_RULESET_MAX];
928 struct pf_anchor *anchor;
929 u_int32_t tticket;
930 int tables;
931 int topen;
932 };
933
934 RB_HEAD(pf_anchor_global, pf_anchor);
935 RB_HEAD(pf_anchor_node, pf_anchor);
936 struct pf_anchor {
937 RB_ENTRY(pf_anchor) entry_global;
938 RB_ENTRY(pf_anchor) entry_node;
939 struct pf_anchor *parent;
940 struct pf_anchor_node children;
941 char name[PF_ANCHOR_NAME_SIZE];
942 char path[MAXPATHLEN];
943 struct pf_ruleset ruleset;
944 int refcnt; /* anchor rules */
945 int match; /* XXX: used for pfctl black magic */
946 };
947 RB_PROTOTYPE(pf_anchor_global, pf_anchor, entry_global, pf_anchor_compare);
948 RB_PROTOTYPE(pf_anchor_node, pf_anchor, entry_node, pf_anchor_compare);
949
950 #define PF_RESERVED_ANCHOR "_pf"
951
952 #define PFR_TFLAG_PERSIST 0x00000001
953 #define PFR_TFLAG_CONST 0x00000002
954 #define PFR_TFLAG_ACTIVE 0x00000004
955 #define PFR_TFLAG_INACTIVE 0x00000008
956 #define PFR_TFLAG_REFERENCED 0x00000010
957 #define PFR_TFLAG_REFDANCHOR 0x00000020
958 #define PFR_TFLAG_COUNTERS 0x00000040
959 /* Adjust masks below when adding flags. */
960 #define PFR_TFLAG_USRMASK (PFR_TFLAG_PERSIST | \
961 PFR_TFLAG_CONST | \
962 PFR_TFLAG_COUNTERS)
963 #define PFR_TFLAG_SETMASK (PFR_TFLAG_ACTIVE | \
964 PFR_TFLAG_INACTIVE | \
965 PFR_TFLAG_REFERENCED | \
966 PFR_TFLAG_REFDANCHOR)
967 #define PFR_TFLAG_ALLMASK (PFR_TFLAG_PERSIST | \
968 PFR_TFLAG_CONST | \
969 PFR_TFLAG_ACTIVE | \
970 PFR_TFLAG_INACTIVE | \
971 PFR_TFLAG_REFERENCED | \
972 PFR_TFLAG_REFDANCHOR | \
973 PFR_TFLAG_COUNTERS)
974
975 struct pf_anchor_stackframe;
976
977 struct pfr_table {
978 char pfrt_anchor[MAXPATHLEN];
979 char pfrt_name[PF_TABLE_NAME_SIZE];
980 u_int32_t pfrt_flags;
981 u_int8_t pfrt_fback;
982 };
983
984 enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED,
985 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE,
986 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_NOCOUNT, PFR_FB_MAX };
987
988 struct pfr_addr {
989 union {
990 struct in_addr _pfra_ip4addr;
991 struct in6_addr _pfra_ip6addr;
992 } pfra_u;
993 u_int8_t pfra_af;
994 u_int8_t pfra_net;
995 u_int8_t pfra_not;
996 u_int8_t pfra_fback;
997 };
998 #define pfra_ip4addr pfra_u._pfra_ip4addr
999 #define pfra_ip6addr pfra_u._pfra_ip6addr
1000
1001 enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX };
1002 enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX };
1003 #define PFR_OP_XPASS PFR_OP_ADDR_MAX
1004
1005 struct pfr_astats {
1006 struct pfr_addr pfras_a;
1007 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
1008 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
1009 long pfras_tzero;
1010 };
1011
1012 enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX };
1013
1014 struct pfr_tstats {
1015 struct pfr_table pfrts_t;
1016 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
1017 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
1018 u_int64_t pfrts_match;
1019 u_int64_t pfrts_nomatch;
1020 long pfrts_tzero;
1021 int pfrts_cnt;
1022 int pfrts_refcnt[PFR_REFCNT_MAX];
1023 };
1024
1025 struct pfr_ktstats {
1026 struct pfr_table pfrts_t;
1027 counter_u64_t pfrkts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
1028 counter_u64_t pfrkts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
1029 counter_u64_t pfrkts_match;
1030 counter_u64_t pfrkts_nomatch;
1031 long pfrkts_tzero;
1032 int pfrkts_cnt;
1033 int pfrkts_refcnt[PFR_REFCNT_MAX];
1034 };
1035 #define pfrts_name pfrts_t.pfrt_name
1036 #define pfrts_flags pfrts_t.pfrt_flags
1037
1038 #ifndef _SOCKADDR_UNION_DEFINED
1039 #define _SOCKADDR_UNION_DEFINED
1040 union sockaddr_union {
1041 struct sockaddr sa;
1042 struct sockaddr_in sin;
1043 struct sockaddr_in6 sin6;
1044 };
1045 #endif /* _SOCKADDR_UNION_DEFINED */
1046
1047 struct pfr_kcounters {
1048 counter_u64_t pfrkc_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
1049 counter_u64_t pfrkc_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
1050 long pfrkc_tzero;
1051 };
1052
1053 SLIST_HEAD(pfr_kentryworkq, pfr_kentry);
1054 struct pfr_kentry {
1055 struct radix_node pfrke_node[2];
1056 union sockaddr_union pfrke_sa;
1057 SLIST_ENTRY(pfr_kentry) pfrke_workq;
1058 struct pfr_kcounters pfrke_counters;
1059 u_int8_t pfrke_af;
1060 u_int8_t pfrke_net;
1061 u_int8_t pfrke_not;
1062 u_int8_t pfrke_mark;
1063 };
1064
1065 SLIST_HEAD(pfr_ktableworkq, pfr_ktable);
1066 RB_HEAD(pfr_ktablehead, pfr_ktable);
1067 struct pfr_ktable {
1068 struct pfr_ktstats pfrkt_kts;
1069 RB_ENTRY(pfr_ktable) pfrkt_tree;
1070 SLIST_ENTRY(pfr_ktable) pfrkt_workq;
1071 struct radix_node_head *pfrkt_ip4;
1072 struct radix_node_head *pfrkt_ip6;
1073 struct pfr_ktable *pfrkt_shadow;
1074 struct pfr_ktable *pfrkt_root;
1075 struct pf_ruleset *pfrkt_rs;
1076 long pfrkt_larg;
1077 int pfrkt_nflags;
1078 };
1079 #define pfrkt_t pfrkt_kts.pfrts_t
1080 #define pfrkt_name pfrkt_t.pfrt_name
1081 #define pfrkt_anchor pfrkt_t.pfrt_anchor
1082 #define pfrkt_ruleset pfrkt_t.pfrt_ruleset
1083 #define pfrkt_flags pfrkt_t.pfrt_flags
1084 #define pfrkt_cnt pfrkt_kts.pfrkts_cnt
1085 #define pfrkt_refcnt pfrkt_kts.pfrkts_refcnt
1086 #define pfrkt_packets pfrkt_kts.pfrkts_packets
1087 #define pfrkt_bytes pfrkt_kts.pfrkts_bytes
1088 #define pfrkt_match pfrkt_kts.pfrkts_match
1089 #define pfrkt_nomatch pfrkt_kts.pfrkts_nomatch
1090 #define pfrkt_tzero pfrkt_kts.pfrkts_tzero
1091
1092 /* keep synced with pfi_kif, used in RB_FIND */
1093 struct pfi_kif_cmp {
1094 char pfik_name[IFNAMSIZ];
1095 };
1096
1097 struct pfi_kif {
1098 char pfik_name[IFNAMSIZ];
1099 union {
1100 RB_ENTRY(pfi_kif) _pfik_tree;
1101 LIST_ENTRY(pfi_kif) _pfik_list;
1102 } _pfik_glue;
1103 #define pfik_tree _pfik_glue._pfik_tree
1104 #define pfik_list _pfik_glue._pfik_list
1105 u_int64_t pfik_packets[2][2][2];
1106 u_int64_t pfik_bytes[2][2][2];
1107 u_int32_t pfik_tzero;
1108 u_int pfik_flags;
1109 struct ifnet *pfik_ifp;
1110 struct ifg_group *pfik_group;
1111 u_int pfik_rulerefs;
1112 TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs;
1113 };
1114
1115 #define PFI_IFLAG_REFS 0x0001 /* has state references */
1116 #define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */
1117
1118 struct pf_pdesc {
1119 struct {
1120 int done;
1121 uid_t uid;
1122 gid_t gid;
1123 } lookup;
1124 u_int64_t tot_len; /* Make Mickey money */
1125 union {
1126 struct tcphdr *tcp;
1127 struct udphdr *udp;
1128 struct icmp *icmp;
1129 #ifdef INET6
1130 struct icmp6_hdr *icmp6;
1131 #endif /* INET6 */
1132 void *any;
1133 } hdr;
1134
1135 struct pf_rule *nat_rule; /* nat/rdr rule applied to packet */
1136 struct pf_addr *src; /* src address */
1137 struct pf_addr *dst; /* dst address */
1138 u_int16_t *sport;
1139 u_int16_t *dport;
1140 struct pf_mtag *pf_mtag;
1141
1142 u_int32_t p_len; /* total length of payload */
1143
1144 u_int16_t *ip_sum;
1145 u_int16_t *proto_sum;
1146 u_int16_t flags; /* Let SCRUB trigger behavior in
1147 * state code. Easier than tags */
1148 #define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */
1149 #define PFDESC_IP_REAS 0x0002 /* IP frags would've been reassembled */
1150 sa_family_t af;
1151 u_int8_t proto;
1152 u_int8_t tos;
1153 u_int8_t dir; /* direction */
1154 u_int8_t sidx; /* key index for source */
1155 u_int8_t didx; /* key index for destination */
1156 };
1157
1158 /* flags for RDR options */
1159 #define PF_DPORT_RANGE 0x01 /* Dest port uses range */
1160 #define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */
1161
1162 /* UDP state enumeration */
1163 #define PFUDPS_NO_TRAFFIC 0
1164 #define PFUDPS_SINGLE 1
1165 #define PFUDPS_MULTIPLE 2
1166
1167 #define PFUDPS_NSTATES 3 /* number of state levels */
1168
1169 #define PFUDPS_NAMES { \
1170 "NO_TRAFFIC", \
1171 "SINGLE", \
1172 "MULTIPLE", \
1173 NULL \
1174 }
1175
1176 /* Other protocol state enumeration */
1177 #define PFOTHERS_NO_TRAFFIC 0
1178 #define PFOTHERS_SINGLE 1
1179 #define PFOTHERS_MULTIPLE 2
1180
1181 #define PFOTHERS_NSTATES 3 /* number of state levels */
1182
1183 #define PFOTHERS_NAMES { \
1184 "NO_TRAFFIC", \
1185 "SINGLE", \
1186 "MULTIPLE", \
1187 NULL \
1188 }
1189
1190 #define ACTION_SET(a, x) \
1191 do { \
1192 if ((a) != NULL) \
1193 *(a) = (x); \
1194 } while (0)
1195
1196 #define REASON_SET(a, x) \
1197 do { \
1198 if ((a) != NULL) \
1199 *(a) = (x); \
1200 if (x < PFRES_MAX) \
1201 counter_u64_add(V_pf_status.counters[x], 1); \
1202 } while (0)
1203
1204 struct pf_kstatus {
1205 counter_u64_t counters[PFRES_MAX]; /* reason for passing/dropping */
1206 counter_u64_t lcounters[LCNT_MAX]; /* limit counters */
1207 counter_u64_t fcounters[FCNT_MAX]; /* state operation counters */
1208 counter_u64_t scounters[SCNT_MAX]; /* src_node operation counters */
1209 uint32_t states;
1210 uint32_t src_nodes;
1211 uint32_t running;
1212 uint32_t since;
1213 uint32_t debug;
1214 uint32_t hostid;
1215 char ifname[IFNAMSIZ];
1216 uint8_t pf_chksum[PF_MD5_DIGEST_LENGTH];
1217 };
1218
1219 struct pf_divert {
1220 union {
1221 struct in_addr ipv4;
1222 struct in6_addr ipv6;
1223 } addr;
1224 u_int16_t port;
1225 };
1226
1227 #define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */
1228 #define PFR_KENTRY_HIWAT 200000 /* Number of table entries */
1229
1230 /*
1231 * ioctl parameter structures
1232 */
1233
1234 struct pfioc_pooladdr {
1235 u_int32_t action;
1236 u_int32_t ticket;
1237 u_int32_t nr;
1238 u_int32_t r_num;
1239 u_int8_t r_action;
1240 u_int8_t r_last;
1241 u_int8_t af;
1242 char anchor[MAXPATHLEN];
1243 struct pf_pooladdr addr;
1244 };
1245
1246 struct pfioc_rule {
1247 u_int32_t action;
1248 u_int32_t ticket;
1249 u_int32_t pool_ticket;
1250 u_int32_t nr;
1251 char anchor[MAXPATHLEN];
1252 char anchor_call[MAXPATHLEN];
1253 struct pf_rule rule;
1254 };
1255
1256 struct pfioc_natlook {
1257 struct pf_addr saddr;
1258 struct pf_addr daddr;
1259 struct pf_addr rsaddr;
1260 struct pf_addr rdaddr;
1261 u_int16_t sport;
1262 u_int16_t dport;
1263 u_int16_t rsport;
1264 u_int16_t rdport;
1265 sa_family_t af;
1266 u_int8_t proto;
1267 u_int8_t direction;
1268 };
1269
1270 struct pfioc_state {
1271 struct pfsync_state state;
1272 };
1273
1274 struct pfioc_src_node_kill {
1275 sa_family_t psnk_af;
1276 struct pf_rule_addr psnk_src;
1277 struct pf_rule_addr psnk_dst;
1278 u_int psnk_killed;
1279 };
1280
1281 struct pfioc_state_kill {
1282 struct pf_state_cmp psk_pfcmp;
1283 sa_family_t psk_af;
1284 int psk_proto;
1285 struct pf_rule_addr psk_src;
1286 struct pf_rule_addr psk_dst;
1287 char psk_ifname[IFNAMSIZ];
1288 char psk_label[PF_RULE_LABEL_SIZE];
1289 u_int psk_killed;
1290 };
1291
1292 struct pfioc_states {
1293 int ps_len;
1294 union {
1295 caddr_t psu_buf;
1296 struct pfsync_state *psu_states;
1297 } ps_u;
1298 #define ps_buf ps_u.psu_buf
1299 #define ps_states ps_u.psu_states
1300 };
1301
1302 struct pfioc_src_nodes {
1303 int psn_len;
1304 union {
1305 caddr_t psu_buf;
1306 struct pf_src_node *psu_src_nodes;
1307 } psn_u;
1308 #define psn_buf psn_u.psu_buf
1309 #define psn_src_nodes psn_u.psu_src_nodes
1310 };
1311
1312 struct pfioc_if {
1313 char ifname[IFNAMSIZ];
1314 };
1315
1316 struct pfioc_tm {
1317 int timeout;
1318 int seconds;
1319 };
1320
1321 struct pfioc_limit {
1322 int index;
1323 unsigned limit;
1324 };
1325
1326 struct pfioc_altq_v0 {
1327 u_int32_t action;
1328 u_int32_t ticket;
1329 u_int32_t nr;
1330 struct pf_altq_v0 altq;
1331 };
1332
1333 struct pfioc_altq_v1 {
1334 u_int32_t action;
1335 u_int32_t ticket;
1336 u_int32_t nr;
1337 /*
1338 * Placed here so code that only uses the above parameters can be
1339 * written entirely in terms of the v0 or v1 type.
1340 */
1341 u_int32_t version;
1342 struct pf_altq_v1 altq;
1343 };
1344
1345 /*
1346 * Latest version of struct pfioc_altq_vX. This must move in lock-step with
1347 * the latest version of struct pf_altq_vX as it has that struct as a
1348 * member.
1349 */
1350 #define PFIOC_ALTQ_VERSION PF_ALTQ_VERSION
1351
1352 struct pfioc_qstats_v0 {
1353 u_int32_t ticket;
1354 u_int32_t nr;
1355 void *buf;
1356 int nbytes;
1357 u_int8_t scheduler;
1358 };
1359
1360 struct pfioc_qstats_v1 {
1361 u_int32_t ticket;
1362 u_int32_t nr;
1363 void *buf;
1364 int nbytes;
1365 u_int8_t scheduler;
1366 /*
1367 * Placed here so code that only uses the above parameters can be
1368 * written entirely in terms of the v0 or v1 type.
1369 */
1370 u_int32_t version; /* Requested version of stats struct */
1371 };
1372
1373 /* Latest version of struct pfioc_qstats_vX */
1374 #define PFIOC_QSTATS_VERSION 1
1375
1376 struct pfioc_ruleset {
1377 u_int32_t nr;
1378 char path[MAXPATHLEN];
1379 char name[PF_ANCHOR_NAME_SIZE];
1380 };
1381
1382 #define PF_RULESET_ALTQ (PF_RULESET_MAX)
1383 #define PF_RULESET_TABLE (PF_RULESET_MAX+1)
1384 struct pfioc_trans {
1385 int size; /* number of elements */
1386 int esize; /* size of each element in bytes */
1387 struct pfioc_trans_e {
1388 int rs_num;
1389 char anchor[MAXPATHLEN];
1390 u_int32_t ticket;
1391 } *array;
1392 };
1393
1394 #define PFR_FLAG_ATOMIC 0x00000001 /* unused */
1395 #define PFR_FLAG_DUMMY 0x00000002
1396 #define PFR_FLAG_FEEDBACK 0x00000004
1397 #define PFR_FLAG_CLSTATS 0x00000008
1398 #define PFR_FLAG_ADDRSTOO 0x00000010
1399 #define PFR_FLAG_REPLACE 0x00000020
1400 #define PFR_FLAG_ALLRSETS 0x00000040
1401 #define PFR_FLAG_ALLMASK 0x0000007F
1402 #ifdef _KERNEL
1403 #define PFR_FLAG_USERIOCTL 0x10000000
1404 #endif
1405
1406 struct pfioc_table {
1407 struct pfr_table pfrio_table;
1408 void *pfrio_buffer;
1409 int pfrio_esize;
1410 int pfrio_size;
1411 int pfrio_size2;
1412 int pfrio_nadd;
1413 int pfrio_ndel;
1414 int pfrio_nchange;
1415 int pfrio_flags;
1416 u_int32_t pfrio_ticket;
1417 };
1418 #define pfrio_exists pfrio_nadd
1419 #define pfrio_nzero pfrio_nadd
1420 #define pfrio_nmatch pfrio_nadd
1421 #define pfrio_naddr pfrio_size2
1422 #define pfrio_setflag pfrio_size2
1423 #define pfrio_clrflag pfrio_nadd
1424
1425 struct pfioc_iface {
1426 char pfiio_name[IFNAMSIZ];
1427 void *pfiio_buffer;
1428 int pfiio_esize;
1429 int pfiio_size;
1430 int pfiio_nzero;
1431 int pfiio_flags;
1432 };
1433
1434
1435 /*
1436 * ioctl operations
1437 */
1438
1439 #define DIOCSTART _IO ('D', 1)
1440 #define DIOCSTOP _IO ('D', 2)
1441 #define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule)
1442 #define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule)
1443 #define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule)
1444 /* XXX cut 8 - 17 */
1445 #define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill)
1446 #define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state)
1447 #define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if)
1448 #define DIOCGETSTATUS _IOWR('D', 21, struct pf_status)
1449 #define DIOCCLRSTATUS _IO ('D', 22)
1450 #define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook)
1451 #define DIOCSETDEBUG _IOWR('D', 24, u_int32_t)
1452 #define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states)
1453 #define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule)
1454 /* XXX cut 26 - 28 */
1455 #define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm)
1456 #define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm)
1457 #define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state)
1458 #define DIOCCLRRULECTRS _IO ('D', 38)
1459 #define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit)
1460 #define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit)
1461 #define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill)
1462 #define DIOCSTARTALTQ _IO ('D', 42)
1463 #define DIOCSTOPALTQ _IO ('D', 43)
1464 #define DIOCADDALTQV0 _IOWR('D', 45, struct pfioc_altq_v0)
1465 #define DIOCADDALTQV1 _IOWR('D', 45, struct pfioc_altq_v1)
1466 #define DIOCGETALTQSV0 _IOWR('D', 47, struct pfioc_altq_v0)
1467 #define DIOCGETALTQSV1 _IOWR('D', 47, struct pfioc_altq_v1)
1468 #define DIOCGETALTQV0 _IOWR('D', 48, struct pfioc_altq_v0)
1469 #define DIOCGETALTQV1 _IOWR('D', 48, struct pfioc_altq_v1)
1470 #define DIOCCHANGEALTQV0 _IOWR('D', 49, struct pfioc_altq_v0)
1471 #define DIOCCHANGEALTQV1 _IOWR('D', 49, struct pfioc_altq_v1)
1472 #define DIOCGETQSTATSV0 _IOWR('D', 50, struct pfioc_qstats_v0)
1473 #define DIOCGETQSTATSV1 _IOWR('D', 50, struct pfioc_qstats_v1)
1474 #define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr)
1475 #define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr)
1476 #define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr)
1477 #define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr)
1478 #define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr)
1479 /* XXX cut 55 - 57 */
1480 #define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset)
1481 #define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset)
1482 #define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table)
1483 #define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table)
1484 #define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table)
1485 #define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table)
1486 #define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table)
1487 #define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table)
1488 #define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table)
1489 #define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table)
1490 #define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table)
1491 #define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table)
1492 #define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table)
1493 #define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table)
1494 #define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table)
1495 #define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table)
1496 #define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table)
1497 #define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table)
1498 #define DIOCOSFPFLUSH _IO('D', 78)
1499 #define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl)
1500 #define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl)
1501 #define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans)
1502 #define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans)
1503 #define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans)
1504 #define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes)
1505 #define DIOCCLRSRCNODES _IO('D', 85)
1506 #define DIOCSETHOSTID _IOWR('D', 86, u_int32_t)
1507 #define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface)
1508 #define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface)
1509 #define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface)
1510 #define DIOCKILLSRCNODES _IOWR('D', 91, struct pfioc_src_node_kill)
1511 struct pf_ifspeed_v0 {
1512 char ifname[IFNAMSIZ];
1513 u_int32_t baudrate;
1514 };
1515
1516 struct pf_ifspeed_v1 {
1517 char ifname[IFNAMSIZ];
1518 u_int32_t baudrate32;
1519 /* layout identical to struct pf_ifspeed_v0 up to this point */
1520 u_int64_t baudrate;
1521 };
1522
1523 /* Latest version of struct pf_ifspeed_vX */
1524 #define PF_IFSPEED_VERSION 1
1525
1526 #define DIOCGIFSPEEDV0 _IOWR('D', 92, struct pf_ifspeed_v0)
1527 #define DIOCGIFSPEEDV1 _IOWR('D', 92, struct pf_ifspeed_v1)
1528
1529 /*
1530 * Compatibility and convenience macros
1531 */
1532 #ifndef _KERNEL
1533 #ifdef PFIOC_USE_LATEST
1534 /*
1535 * Maintaining in-tree consumers of the ioctl interface is easier when that
1536 * code can be written in terms old names that refer to the latest interface
1537 * version as that reduces the required changes in the consumers to those
1538 * that are functionally necessary to accommodate a new interface version.
1539 */
1540 #define pfioc_altq __CONCAT(pfioc_altq_v, PFIOC_ALTQ_VERSION)
1541 #define pfioc_qstats __CONCAT(pfioc_qstats_v, PFIOC_QSTATS_VERSION)
1542 #define pf_ifspeed __CONCAT(pf_ifspeed_v, PF_IFSPEED_VERSION)
1543
1544 #define DIOCADDALTQ __CONCAT(DIOCADDALTQV, PFIOC_ALTQ_VERSION)
1545 #define DIOCGETALTQS __CONCAT(DIOCGETALTQSV, PFIOC_ALTQ_VERSION)
1546 #define DIOCGETALTQ __CONCAT(DIOCGETALTQV, PFIOC_ALTQ_VERSION)
1547 #define DIOCCHANGEALTQ __CONCAT(DIOCCHANGEALTQV, PFIOC_ALTQ_VERSION)
1548 #define DIOCGETQSTATS __CONCAT(DIOCGETQSTATSV, PFIOC_QSTATS_VERSION)
1549 #define DIOCGIFSPEED __CONCAT(DIOCGIFSPEEDV, PF_IFSPEED_VERSION)
1550 #else
1551 /*
1552 * When building out-of-tree code that is written for the old interface,
1553 * such as may exist in ports for example, resolve the old struct tags and
1554 * ioctl command names to the v0 versions.
1555 */
1556 #define pfioc_altq __CONCAT(pfioc_altq_v, 0)
1557 #define pfioc_qstats __CONCAT(pfioc_qstats_v, 0)
1558 #define pf_ifspeed __CONCAT(pf_ifspeed_v, 0)
1559
1560 #define DIOCADDALTQ __CONCAT(DIOCADDALTQV, 0)
1561 #define DIOCGETALTQS __CONCAT(DIOCGETALTQSV, 0)
1562 #define DIOCGETALTQ __CONCAT(DIOCGETALTQV, 0)
1563 #define DIOCCHANGEALTQ __CONCAT(DIOCCHANGEALTQV, 0)
1564 #define DIOCGETQSTATS __CONCAT(DIOCGETQSTATSV, 0)
1565 #define DIOCGIFSPEED __CONCAT(DIOCGIFSPEEDV, 0)
1566 #endif /* PFIOC_USE_LATEST */
1567 #endif /* _KERNEL */
1568
1569 #ifdef _KERNEL
1570 LIST_HEAD(pf_src_node_list, pf_src_node);
1571 struct pf_srchash {
1572 struct pf_src_node_list nodes;
1573 struct mtx lock;
1574 };
1575
1576 struct pf_keyhash {
1577 LIST_HEAD(, pf_state_key) keys;
1578 struct mtx lock;
1579 };
1580
1581 struct pf_idhash {
1582 LIST_HEAD(, pf_state) states;
1583 struct mtx lock;
1584 };
1585
1586 extern u_long pf_hashmask;
1587 extern u_long pf_srchashmask;
1588 #define PF_HASHSIZ (131072)
1589 #define PF_SRCHASHSIZ (PF_HASHSIZ/4)
1590 VNET_DECLARE(struct pf_keyhash *, pf_keyhash);
1591 VNET_DECLARE(struct pf_idhash *, pf_idhash);
1592 #define V_pf_keyhash VNET(pf_keyhash)
1593 #define V_pf_idhash VNET(pf_idhash)
1594 VNET_DECLARE(struct pf_srchash *, pf_srchash);
1595 #define V_pf_srchash VNET(pf_srchash)
1596
1597 #define PF_IDHASH(s) (be64toh((s)->id) % (pf_hashmask + 1))
1598
1599 VNET_DECLARE(void *, pf_swi_cookie);
1600 #define V_pf_swi_cookie VNET(pf_swi_cookie)
1601
1602 VNET_DECLARE(uint64_t, pf_stateid[MAXCPU]);
1603 #define V_pf_stateid VNET(pf_stateid)
1604
1605 TAILQ_HEAD(pf_altqqueue, pf_altq);
1606 VNET_DECLARE(struct pf_altqqueue, pf_altqs[4]);
1607 #define V_pf_altqs VNET(pf_altqs)
1608 VNET_DECLARE(struct pf_palist, pf_pabuf);
1609 #define V_pf_pabuf VNET(pf_pabuf)
1610
1611 VNET_DECLARE(u_int32_t, ticket_altqs_active);
1612 #define V_ticket_altqs_active VNET(ticket_altqs_active)
1613 VNET_DECLARE(u_int32_t, ticket_altqs_inactive);
1614 #define V_ticket_altqs_inactive VNET(ticket_altqs_inactive)
1615 VNET_DECLARE(int, altqs_inactive_open);
1616 #define V_altqs_inactive_open VNET(altqs_inactive_open)
1617 VNET_DECLARE(u_int32_t, ticket_pabuf);
1618 #define V_ticket_pabuf VNET(ticket_pabuf)
1619 VNET_DECLARE(struct pf_altqqueue *, pf_altqs_active);
1620 #define V_pf_altqs_active VNET(pf_altqs_active)
1621 VNET_DECLARE(struct pf_altqqueue *, pf_altq_ifs_active);
1622 #define V_pf_altq_ifs_active VNET(pf_altq_ifs_active)
1623 VNET_DECLARE(struct pf_altqqueue *, pf_altqs_inactive);
1624 #define V_pf_altqs_inactive VNET(pf_altqs_inactive)
1625 VNET_DECLARE(struct pf_altqqueue *, pf_altq_ifs_inactive);
1626 #define V_pf_altq_ifs_inactive VNET(pf_altq_ifs_inactive)
1627
1628 VNET_DECLARE(struct pf_rulequeue, pf_unlinked_rules);
1629 #define V_pf_unlinked_rules VNET(pf_unlinked_rules)
1630
1631 void pf_initialize(void);
1632 void pf_mtag_initialize(void);
1633 void pf_mtag_cleanup(void);
1634 void pf_cleanup(void);
1635
1636 struct pf_mtag *pf_get_mtag(struct mbuf *);
1637
1638 extern void pf_calc_skip_steps(struct pf_rulequeue *);
1639 #ifdef ALTQ
1640 extern void pf_altq_ifnet_event(struct ifnet *, int);
1641 #endif
1642 VNET_DECLARE(uma_zone_t, pf_state_z);
1643 #define V_pf_state_z VNET(pf_state_z)
1644 VNET_DECLARE(uma_zone_t, pf_state_key_z);
1645 #define V_pf_state_key_z VNET(pf_state_key_z)
1646 VNET_DECLARE(uma_zone_t, pf_state_scrub_z);
1647 #define V_pf_state_scrub_z VNET(pf_state_scrub_z)
1648
1649 extern void pf_purge_thread(void *);
1650 extern void pf_unload_vnet_purge(void);
1651 extern void pf_intr(void *);
1652 extern void pf_purge_expired_src_nodes(void);
1653
1654 extern int pf_unlink_state(struct pf_state *, u_int);
1655 #define PF_ENTER_LOCKED 0x00000001
1656 #define PF_RETURN_LOCKED 0x00000002
1657 extern int pf_state_insert(struct pfi_kif *,
1658 struct pf_state_key *,
1659 struct pf_state_key *,
1660 struct pf_state *);
1661 extern void pf_free_state(struct pf_state *);
1662
1663 static __inline void
pf_ref_state(struct pf_state * s)1664 pf_ref_state(struct pf_state *s)
1665 {
1666
1667 refcount_acquire(&s->refs);
1668 }
1669
1670 static __inline int
pf_release_state(struct pf_state * s)1671 pf_release_state(struct pf_state *s)
1672 {
1673
1674 if (refcount_release(&s->refs)) {
1675 pf_free_state(s);
1676 return (1);
1677 } else
1678 return (0);
1679 }
1680
1681 extern struct pf_state *pf_find_state_byid(uint64_t, uint32_t);
1682 extern struct pf_state *pf_find_state_all(struct pf_state_key_cmp *,
1683 u_int, int *);
1684 extern struct pf_src_node *pf_find_src_node(struct pf_addr *,
1685 struct pf_rule *, sa_family_t, int);
1686 extern void pf_unlink_src_node(struct pf_src_node *);
1687 extern u_int pf_free_src_nodes(struct pf_src_node_list *);
1688 extern void pf_print_state(struct pf_state *);
1689 extern void pf_print_flags(u_int8_t);
1690 extern u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t,
1691 u_int8_t);
1692 extern u_int16_t pf_proto_cksum_fixup(struct mbuf *, u_int16_t,
1693 u_int16_t, u_int16_t, u_int8_t);
1694
1695 VNET_DECLARE(struct ifnet *, sync_ifp);
1696 #define V_sync_ifp VNET(sync_ifp);
1697 VNET_DECLARE(struct pf_rule, pf_default_rule);
1698 #define V_pf_default_rule VNET(pf_default_rule)
1699 extern void pf_addrcpy(struct pf_addr *, struct pf_addr *,
1700 u_int8_t);
1701 void pf_free_rule(struct pf_rule *);
1702
1703 #ifdef INET
1704 int pf_test(int, int, struct ifnet *, struct mbuf **, struct inpcb *);
1705 int pf_normalize_ip(struct mbuf **, int, struct pfi_kif *, u_short *,
1706 struct pf_pdesc *);
1707 #endif /* INET */
1708
1709 #ifdef INET6
1710 int pf_test6(int, int, struct ifnet *, struct mbuf **, struct inpcb *);
1711 int pf_normalize_ip6(struct mbuf **, int, struct pfi_kif *, u_short *,
1712 struct pf_pdesc *);
1713 void pf_poolmask(struct pf_addr *, struct pf_addr*,
1714 struct pf_addr *, struct pf_addr *, u_int8_t);
1715 void pf_addr_inc(struct pf_addr *, sa_family_t);
1716 int pf_refragment6(struct ifnet *, struct mbuf **, struct m_tag *);
1717 #endif /* INET6 */
1718
1719 u_int32_t pf_new_isn(struct pf_state *);
1720 void *pf_pull_hdr(struct mbuf *, int, void *, int, u_short *, u_short *,
1721 sa_family_t);
1722 void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t);
1723 void pf_change_proto_a(struct mbuf *, void *, u_int16_t *, u_int32_t,
1724 u_int8_t);
1725 void pf_change_tcp_a(struct mbuf *, void *, u_int16_t *, u_int32_t);
1726 void pf_send_deferred_syn(struct pf_state *);
1727 int pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *,
1728 struct pf_addr *, sa_family_t);
1729 int pf_match_addr_range(struct pf_addr *, struct pf_addr *,
1730 struct pf_addr *, sa_family_t);
1731 int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t);
1732
1733 void pf_normalize_init(void);
1734 void pf_normalize_cleanup(void);
1735 int pf_normalize_tcp(int, struct pfi_kif *, struct mbuf *, int, int, void *,
1736 struct pf_pdesc *);
1737 void pf_normalize_tcp_cleanup(struct pf_state *);
1738 int pf_normalize_tcp_init(struct mbuf *, int, struct pf_pdesc *,
1739 struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *);
1740 int pf_normalize_tcp_stateful(struct mbuf *, int, struct pf_pdesc *,
1741 u_short *, struct tcphdr *, struct pf_state *,
1742 struct pf_state_peer *, struct pf_state_peer *, int *);
1743 u_int32_t
1744 pf_state_expires(const struct pf_state *);
1745 void pf_purge_expired_fragments(void);
1746 void pf_purge_fragments(uint32_t);
1747 int pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kif *,
1748 int);
1749 int pf_socket_lookup(int, struct pf_pdesc *, struct mbuf *);
1750 struct pf_state_key *pf_alloc_state_key(int);
1751 void pfr_initialize(void);
1752 void pfr_cleanup(void);
1753 int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t);
1754 void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t,
1755 u_int64_t, int, int, int);
1756 int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, sa_family_t);
1757 void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *);
1758 struct pfr_ktable *
1759 pfr_attach_table(struct pf_ruleset *, char *);
1760 void pfr_detach_table(struct pfr_ktable *);
1761 int pfr_clr_tables(struct pfr_table *, int *, int);
1762 int pfr_add_tables(struct pfr_table *, int, int *, int);
1763 int pfr_del_tables(struct pfr_table *, int, int *, int);
1764 int pfr_table_count(struct pfr_table *, int);
1765 int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int);
1766 int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int);
1767 int pfr_clr_tstats(struct pfr_table *, int, int *, int);
1768 int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int);
1769 int pfr_clr_addrs(struct pfr_table *, int *, int);
1770 int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *, long);
1771 int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
1772 int);
1773 int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
1774 int);
1775 int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
1776 int *, int *, int *, int, u_int32_t);
1777 int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int);
1778 int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int);
1779 int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *,
1780 int);
1781 int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
1782 int);
1783 int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int);
1784 int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int);
1785 int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int);
1786 int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *,
1787 int *, u_int32_t, int);
1788
1789 MALLOC_DECLARE(PFI_MTYPE);
1790 VNET_DECLARE(struct pfi_kif *, pfi_all);
1791 #define V_pfi_all VNET(pfi_all)
1792
1793 void pfi_initialize(void);
1794 void pfi_initialize_vnet(void);
1795 void pfi_cleanup(void);
1796 void pfi_cleanup_vnet(void);
1797 void pfi_kif_ref(struct pfi_kif *);
1798 void pfi_kif_unref(struct pfi_kif *);
1799 struct pfi_kif *pfi_kif_find(const char *);
1800 struct pfi_kif *pfi_kif_attach(struct pfi_kif *, const char *);
1801 int pfi_kif_match(struct pfi_kif *, struct pfi_kif *);
1802 void pfi_kif_purge(void);
1803 int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *,
1804 sa_family_t);
1805 int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t);
1806 void pfi_dynaddr_remove(struct pfi_dynaddr *);
1807 void pfi_dynaddr_copyout(struct pf_addr_wrap *);
1808 void pfi_update_status(const char *, struct pf_status *);
1809 void pfi_get_ifaces(const char *, struct pfi_kif *, int *);
1810 int pfi_set_flags(const char *, int);
1811 int pfi_clear_flags(const char *, int);
1812
1813 int pf_match_tag(struct mbuf *, struct pf_rule *, int *, int);
1814 int pf_tag_packet(struct mbuf *, struct pf_pdesc *, int);
1815 int pf_addr_cmp(struct pf_addr *, struct pf_addr *,
1816 sa_family_t);
1817 void pf_qid2qname(u_int32_t, char *);
1818
1819 VNET_DECLARE(struct pf_kstatus, pf_status);
1820 #define V_pf_status VNET(pf_status)
1821
1822 struct pf_limit {
1823 uma_zone_t zone;
1824 u_int limit;
1825 };
1826 VNET_DECLARE(struct pf_limit, pf_limits[PF_LIMIT_MAX]);
1827 #define V_pf_limits VNET(pf_limits)
1828
1829 #endif /* _KERNEL */
1830
1831 #ifdef _KERNEL
1832 VNET_DECLARE(struct pf_anchor_global, pf_anchors);
1833 #define V_pf_anchors VNET(pf_anchors)
1834 VNET_DECLARE(struct pf_anchor, pf_main_anchor);
1835 #define V_pf_main_anchor VNET(pf_main_anchor)
1836 #define pf_main_ruleset V_pf_main_anchor.ruleset
1837 #endif
1838
1839 /* these ruleset functions can be linked into userland programs (pfctl) */
1840 int pf_get_ruleset_number(u_int8_t);
1841 void pf_init_ruleset(struct pf_ruleset *);
1842 int pf_anchor_setup(struct pf_rule *,
1843 const struct pf_ruleset *, const char *);
1844 int pf_anchor_copyout(const struct pf_ruleset *,
1845 const struct pf_rule *, struct pfioc_rule *);
1846 void pf_anchor_remove(struct pf_rule *);
1847 void pf_remove_if_empty_ruleset(struct pf_ruleset *);
1848 struct pf_ruleset *pf_find_ruleset(const char *);
1849 struct pf_ruleset *pf_find_or_create_ruleset(const char *);
1850 void pf_rs_initialize(void);
1851
1852 /* The fingerprint functions can be linked into userland programs (tcpdump) */
1853 int pf_osfp_add(struct pf_osfp_ioctl *);
1854 #ifdef _KERNEL
1855 struct pf_osfp_enlist *
1856 pf_osfp_fingerprint(struct pf_pdesc *, struct mbuf *, int,
1857 const struct tcphdr *);
1858 #endif /* _KERNEL */
1859 void pf_osfp_flush(void);
1860 int pf_osfp_get(struct pf_osfp_ioctl *);
1861 int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t);
1862
1863 #ifdef _KERNEL
1864 void pf_print_host(struct pf_addr *, u_int16_t, u_int8_t);
1865
1866 void pf_step_into_anchor(struct pf_anchor_stackframe *, int *,
1867 struct pf_ruleset **, int, struct pf_rule **,
1868 struct pf_rule **, int *);
1869 int pf_step_out_of_anchor(struct pf_anchor_stackframe *, int *,
1870 struct pf_ruleset **, int, struct pf_rule **,
1871 struct pf_rule **, int *);
1872
1873 int pf_map_addr(u_int8_t, struct pf_rule *,
1874 struct pf_addr *, struct pf_addr *,
1875 struct pf_addr *, struct pf_src_node **);
1876 struct pf_rule *pf_get_translation(struct pf_pdesc *, struct mbuf *,
1877 int, int, struct pfi_kif *, struct pf_src_node **,
1878 struct pf_state_key **, struct pf_state_key **,
1879 struct pf_addr *, struct pf_addr *,
1880 uint16_t, uint16_t, struct pf_anchor_stackframe *);
1881
1882 struct pf_state_key *pf_state_key_setup(struct pf_pdesc *, struct pf_addr *,
1883 struct pf_addr *, u_int16_t, u_int16_t);
1884 struct pf_state_key *pf_state_key_clone(struct pf_state_key *);
1885 #endif /* _KERNEL */
1886
1887 #endif /* _NET_PFVAR_H_ */
1888