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ed(1): simplify by using arc4random_buf().
[freebsd-src.git] / sys / net / pfvar.h
blobed23eb5b20a74d6aa56886070b85ab74f835b5eb
1 /*
2 * Copyright (c) 2001 Daniel Hartmeier
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * - Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above
12 * copyright notice, this list of conditions and the following
13 * disclaimer in the documentation and/or other materials provided
14 * with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
19 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
20 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
22 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
24 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
26 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
27 * POSSIBILITY OF SUCH DAMAGE.
28 *
29 * $OpenBSD: pfvar.h,v 1.282 2009/01/29 15:12:28 pyr Exp $
30 * $FreeBSD$
31 */
32
33 #ifndef _NET_PFVAR_H_
34 #define _NET_PFVAR_H_
35
36 #include <sys/param.h>
37 #include <sys/queue.h>
38 #include <sys/counter.h>
39 #include <sys/malloc.h>
40 #include <sys/refcount.h>
41 #include <sys/tree.h>
42 #include <vm/uma.h>
43
44 #include <net/radix.h>
45 #include <netinet/in.h>
46
47 #include <netpfil/pf/pf.h>
48 #include <netpfil/pf/pf_altq.h>
49 #include <netpfil/pf/pf_mtag.h>
50
51 struct pf_addr {
52 union {
53 struct in_addr v4;
54 struct in6_addr v6;
55 u_int8_t addr8[16];
56 u_int16_t addr16[8];
57 u_int32_t addr32[4];
58 } pfa; /* 128-bit address */
59 #define v4 pfa.v4
60 #define v6 pfa.v6
61 #define addr8 pfa.addr8
62 #define addr16 pfa.addr16
63 #define addr32 pfa.addr32
64 };
65
66 #define PFI_AFLAG_NETWORK 0x01
67 #define PFI_AFLAG_BROADCAST 0x02
68 #define PFI_AFLAG_PEER 0x04
69 #define PFI_AFLAG_MODEMASK 0x07
70 #define PFI_AFLAG_NOALIAS 0x08
71
72 struct pf_addr_wrap {
73 union {
74 struct {
75 struct pf_addr addr;
76 struct pf_addr mask;
77 } a;
78 char ifname[IFNAMSIZ];
79 char tblname[PF_TABLE_NAME_SIZE];
80 } v;
81 union {
82 struct pfi_dynaddr *dyn;
83 struct pfr_ktable *tbl;
84 int dyncnt;
85 int tblcnt;
86 } p;
87 u_int8_t type; /* PF_ADDR_* */
88 u_int8_t iflags; /* PFI_AFLAG_* */
89 };
90
91 #ifdef _KERNEL
92
93 struct pfi_dynaddr {
94 TAILQ_ENTRY(pfi_dynaddr) entry;
95 struct pf_addr pfid_addr4;
96 struct pf_addr pfid_mask4;
97 struct pf_addr pfid_addr6;
98 struct pf_addr pfid_mask6;
99 struct pfr_ktable *pfid_kt;
100 struct pfi_kif *pfid_kif;
101 int pfid_net; /* mask or 128 */
102 int pfid_acnt4; /* address count IPv4 */
103 int pfid_acnt6; /* address count IPv6 */
104 sa_family_t pfid_af; /* rule af */
105 u_int8_t pfid_iflags; /* PFI_AFLAG_* */
106 };
107
108 /*
109 * Address manipulation macros
110 */
111 #define HTONL(x) (x) = htonl((__uint32_t)(x))
112 #define HTONS(x) (x) = htons((__uint16_t)(x))
113 #define NTOHL(x) (x) = ntohl((__uint32_t)(x))
114 #define NTOHS(x) (x) = ntohs((__uint16_t)(x))
115
116 #define PF_NAME "pf"
117
118 #define PF_HASHROW_ASSERT(h) mtx_assert(&(h)->lock, MA_OWNED)
119 #define PF_HASHROW_LOCK(h) mtx_lock(&(h)->lock)
120 #define PF_HASHROW_UNLOCK(h) mtx_unlock(&(h)->lock)
121
122 #define PF_STATE_LOCK(s) \
123 do { \
124 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(s)]; \
125 PF_HASHROW_LOCK(_ih); \
126 } while (0)
127
128 #define PF_STATE_UNLOCK(s) \
129 do { \
130 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH((s))]; \
131 PF_HASHROW_UNLOCK(_ih); \
132 } while (0)
133
134 #ifdef INVARIANTS
135 #define PF_STATE_LOCK_ASSERT(s) \
136 do { \
137 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(s)]; \
138 PF_HASHROW_ASSERT(_ih); \
139 } while (0)
140 #else /* !INVARIANTS */
141 #define PF_STATE_LOCK_ASSERT(s) do {} while (0)
142 #endif /* INVARIANTS */
143
144 extern struct mtx pf_unlnkdrules_mtx;
145 #define PF_UNLNKDRULES_LOCK() mtx_lock(&pf_unlnkdrules_mtx)
146 #define PF_UNLNKDRULES_UNLOCK() mtx_unlock(&pf_unlnkdrules_mtx)
147
148 extern struct rwlock pf_rules_lock;
149 #define PF_RULES_RLOCK() rw_rlock(&pf_rules_lock)
150 #define PF_RULES_RUNLOCK() rw_runlock(&pf_rules_lock)
151 #define PF_RULES_WLOCK() rw_wlock(&pf_rules_lock)
152 #define PF_RULES_WUNLOCK() rw_wunlock(&pf_rules_lock)
153 #define PF_RULES_ASSERT() rw_assert(&pf_rules_lock, RA_LOCKED)
154 #define PF_RULES_RASSERT() rw_assert(&pf_rules_lock, RA_RLOCKED)
155 #define PF_RULES_WASSERT() rw_assert(&pf_rules_lock, RA_WLOCKED)
156
157 #define PF_MODVER 1
158 #define PFLOG_MODVER 1
159 #define PFSYNC_MODVER 1
160
161 #define PFLOG_MINVER 1
162 #define PFLOG_PREFVER PFLOG_MODVER
163 #define PFLOG_MAXVER 1
164 #define PFSYNC_MINVER 1
165 #define PFSYNC_PREFVER PFSYNC_MODVER
166 #define PFSYNC_MAXVER 1
167
168 #ifdef INET
169 #ifndef INET6
170 #define PF_INET_ONLY
171 #endif /* ! INET6 */
172 #endif /* INET */
173
174 #ifdef INET6
175 #ifndef INET
176 #define PF_INET6_ONLY
177 #endif /* ! INET */
178 #endif /* INET6 */
179
180 #ifdef INET
181 #ifdef INET6
182 #define PF_INET_INET6
183 #endif /* INET6 */
184 #endif /* INET */
185
186 #else
187
188 #define PF_INET_INET6
189
190 #endif /* _KERNEL */
191
192 /* Both IPv4 and IPv6 */
193 #ifdef PF_INET_INET6
194
195 #define PF_AEQ(a, b, c) \
196 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \
197 (c == AF_INET6 && (a)->addr32[3] == (b)->addr32[3] && \
198 (a)->addr32[2] == (b)->addr32[2] && \
199 (a)->addr32[1] == (b)->addr32[1] && \
200 (a)->addr32[0] == (b)->addr32[0])) \
201
202 #define PF_ANEQ(a, b, c) \
203 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \
204 (c == AF_INET6 && ((a)->addr32[0] != (b)->addr32[0] || \
205 (a)->addr32[1] != (b)->addr32[1] || \
206 (a)->addr32[2] != (b)->addr32[2] || \
207 (a)->addr32[3] != (b)->addr32[3]))) \
208
209 #define PF_AZERO(a, c) \
210 ((c == AF_INET && !(a)->addr32[0]) || \
211 (c == AF_INET6 && !(a)->addr32[0] && !(a)->addr32[1] && \
212 !(a)->addr32[2] && !(a)->addr32[3] )) \
213
214 #define PF_MATCHA(n, a, m, b, f) \
215 pf_match_addr(n, a, m, b, f)
216
217 #define PF_ACPY(a, b, f) \
218 pf_addrcpy(a, b, f)
219
220 #define PF_AINC(a, f) \
221 pf_addr_inc(a, f)
222
223 #define PF_POOLMASK(a, b, c, d, f) \
224 pf_poolmask(a, b, c, d, f)
225
226 #else
227
228 /* Just IPv6 */
229
230 #ifdef PF_INET6_ONLY
231
232 #define PF_AEQ(a, b, c) \
233 ((a)->addr32[3] == (b)->addr32[3] && \
234 (a)->addr32[2] == (b)->addr32[2] && \
235 (a)->addr32[1] == (b)->addr32[1] && \
236 (a)->addr32[0] == (b)->addr32[0]) \
237
238 #define PF_ANEQ(a, b, c) \
239 ((a)->addr32[3] != (b)->addr32[3] || \
240 (a)->addr32[2] != (b)->addr32[2] || \
241 (a)->addr32[1] != (b)->addr32[1] || \
242 (a)->addr32[0] != (b)->addr32[0]) \
243
244 #define PF_AZERO(a, c) \
245 (!(a)->addr32[0] && \
246 !(a)->addr32[1] && \
247 !(a)->addr32[2] && \
248 !(a)->addr32[3] ) \
249
250 #define PF_MATCHA(n, a, m, b, f) \
251 pf_match_addr(n, a, m, b, f)
252
253 #define PF_ACPY(a, b, f) \
254 pf_addrcpy(a, b, f)
255
256 #define PF_AINC(a, f) \
257 pf_addr_inc(a, f)
258
259 #define PF_POOLMASK(a, b, c, d, f) \
260 pf_poolmask(a, b, c, d, f)
261
262 #else
263
264 /* Just IPv4 */
265 #ifdef PF_INET_ONLY
266
267 #define PF_AEQ(a, b, c) \
268 ((a)->addr32[0] == (b)->addr32[0])
269
270 #define PF_ANEQ(a, b, c) \
271 ((a)->addr32[0] != (b)->addr32[0])
272
273 #define PF_AZERO(a, c) \
274 (!(a)->addr32[0])
275
276 #define PF_MATCHA(n, a, m, b, f) \
277 pf_match_addr(n, a, m, b, f)
278
279 #define PF_ACPY(a, b, f) \
280 (a)->v4.s_addr = (b)->v4.s_addr
281
282 #define PF_AINC(a, f) \
283 do { \
284 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \
285 } while (0)
286
287 #define PF_POOLMASK(a, b, c, d, f) \
288 do { \
289 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \
290 (((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \
291 } while (0)
292
293 #endif /* PF_INET_ONLY */
294 #endif /* PF_INET6_ONLY */
295 #endif /* PF_INET_INET6 */
296
297 /*
298 * XXX callers not FIB-aware in our version of pf yet.
299 * OpenBSD fixed it later it seems, 2010/05/07 13:33:16 claudio.
300 */
301 #define PF_MISMATCHAW(aw, x, af, neg, ifp, rtid) \
302 ( \
303 (((aw)->type == PF_ADDR_NOROUTE && \
304 pf_routable((x), (af), NULL, (rtid))) || \
305 (((aw)->type == PF_ADDR_URPFFAILED && (ifp) != NULL && \
306 pf_routable((x), (af), (ifp), (rtid))) || \
307 ((aw)->type == PF_ADDR_TABLE && \
308 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \
309 ((aw)->type == PF_ADDR_DYNIFTL && \
310 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \
311 ((aw)->type == PF_ADDR_RANGE && \
312 !pf_match_addr_range(&(aw)->v.a.addr, \
313 &(aw)->v.a.mask, (x), (af))) || \
314 ((aw)->type == PF_ADDR_ADDRMASK && \
315 !PF_AZERO(&(aw)->v.a.mask, (af)) && \
316 !PF_MATCHA(0, &(aw)->v.a.addr, \
317 &(aw)->v.a.mask, (x), (af))))) != \
318 (neg) \
319 )
320
321
322 struct pf_rule_uid {
323 uid_t uid[2];
324 u_int8_t op;
325 };
326
327 struct pf_rule_gid {
328 uid_t gid[2];
329 u_int8_t op;
330 };
331
332 struct pf_rule_addr {
333 struct pf_addr_wrap addr;
334 u_int16_t port[2];
335 u_int8_t neg;
336 u_int8_t port_op;
337 };
338
339 struct pf_pooladdr {
340 struct pf_addr_wrap addr;
341 TAILQ_ENTRY(pf_pooladdr) entries;
342 char ifname[IFNAMSIZ];
343 struct pfi_kif *kif;
344 };
345
346 TAILQ_HEAD(pf_palist, pf_pooladdr);
347
348 struct pf_poolhashkey {
349 union {
350 u_int8_t key8[16];
351 u_int16_t key16[8];
352 u_int32_t key32[4];
353 } pfk; /* 128-bit hash key */
354 #define key8 pfk.key8
355 #define key16 pfk.key16
356 #define key32 pfk.key32
357 };
358
359 struct pf_pool {
360 struct pf_palist list;
361 struct pf_pooladdr *cur;
362 struct pf_poolhashkey key;
363 struct pf_addr counter;
364 int tblidx;
365 u_int16_t proxy_port[2];
366 u_int8_t opts;
367 };
368
369
370 /* A packed Operating System description for fingerprinting */
371 typedef u_int32_t pf_osfp_t;
372 #define PF_OSFP_ANY ((pf_osfp_t)0)
373 #define PF_OSFP_UNKNOWN ((pf_osfp_t)-1)
374 #define PF_OSFP_NOMATCH ((pf_osfp_t)-2)
375
376 struct pf_osfp_entry {
377 SLIST_ENTRY(pf_osfp_entry) fp_entry;
378 pf_osfp_t fp_os;
379 int fp_enflags;
380 #define PF_OSFP_EXPANDED 0x001 /* expanded entry */
381 #define PF_OSFP_GENERIC 0x002 /* generic signature */
382 #define PF_OSFP_NODETAIL 0x004 /* no p0f details */
383 #define PF_OSFP_LEN 32
384 char fp_class_nm[PF_OSFP_LEN];
385 char fp_version_nm[PF_OSFP_LEN];
386 char fp_subtype_nm[PF_OSFP_LEN];
387 };
388 #define PF_OSFP_ENTRY_EQ(a, b) \
389 ((a)->fp_os == (b)->fp_os && \
390 memcmp((a)->fp_class_nm, (b)->fp_class_nm, PF_OSFP_LEN) == 0 && \
391 memcmp((a)->fp_version_nm, (b)->fp_version_nm, PF_OSFP_LEN) == 0 && \
392 memcmp((a)->fp_subtype_nm, (b)->fp_subtype_nm, PF_OSFP_LEN) == 0)
393
394 /* handle pf_osfp_t packing */
395 #define _FP_RESERVED_BIT 1 /* For the special negative #defines */
396 #define _FP_UNUSED_BITS 1
397 #define _FP_CLASS_BITS 10 /* OS Class (Windows, Linux) */
398 #define _FP_VERSION_BITS 10 /* OS version (95, 98, NT, 2.4.54, 3.2) */
399 #define _FP_SUBTYPE_BITS 10 /* patch level (NT SP4, SP3, ECN patch) */
400 #define PF_OSFP_UNPACK(osfp, class, version, subtype) do { \
401 (class) = ((osfp) >> (_FP_VERSION_BITS+_FP_SUBTYPE_BITS)) & \
402 ((1 << _FP_CLASS_BITS) - 1); \
403 (version) = ((osfp) >> _FP_SUBTYPE_BITS) & \
404 ((1 << _FP_VERSION_BITS) - 1);\
405 (subtype) = (osfp) & ((1 << _FP_SUBTYPE_BITS) - 1); \
406 } while(0)
407 #define PF_OSFP_PACK(osfp, class, version, subtype) do { \
408 (osfp) = ((class) & ((1 << _FP_CLASS_BITS) - 1)) << (_FP_VERSION_BITS \
409 + _FP_SUBTYPE_BITS); \
410 (osfp) |= ((version) & ((1 << _FP_VERSION_BITS) - 1)) << \
411 _FP_SUBTYPE_BITS; \
412 (osfp) |= (subtype) & ((1 << _FP_SUBTYPE_BITS) - 1); \
413 } while(0)
414
415 /* the fingerprint of an OSes TCP SYN packet */
416 typedef u_int64_t pf_tcpopts_t;
417 struct pf_os_fingerprint {
418 SLIST_HEAD(pf_osfp_enlist, pf_osfp_entry) fp_oses; /* list of matches */
419 pf_tcpopts_t fp_tcpopts; /* packed TCP options */
420 u_int16_t fp_wsize; /* TCP window size */
421 u_int16_t fp_psize; /* ip->ip_len */
422 u_int16_t fp_mss; /* TCP MSS */
423 u_int16_t fp_flags;
424 #define PF_OSFP_WSIZE_MOD 0x0001 /* Window modulus */
425 #define PF_OSFP_WSIZE_DC 0x0002 /* Window don't care */
426 #define PF_OSFP_WSIZE_MSS 0x0004 /* Window multiple of MSS */
427 #define PF_OSFP_WSIZE_MTU 0x0008 /* Window multiple of MTU */
428 #define PF_OSFP_PSIZE_MOD 0x0010 /* packet size modulus */
429 #define PF_OSFP_PSIZE_DC 0x0020 /* packet size don't care */
430 #define PF_OSFP_WSCALE 0x0040 /* TCP window scaling */
431 #define PF_OSFP_WSCALE_MOD 0x0080 /* TCP window scale modulus */
432 #define PF_OSFP_WSCALE_DC 0x0100 /* TCP window scale dont-care */
433 #define PF_OSFP_MSS 0x0200 /* TCP MSS */
434 #define PF_OSFP_MSS_MOD 0x0400 /* TCP MSS modulus */
435 #define PF_OSFP_MSS_DC 0x0800 /* TCP MSS dont-care */
436 #define PF_OSFP_DF 0x1000 /* IPv4 don't fragment bit */
437 #define PF_OSFP_TS0 0x2000 /* Zero timestamp */
438 #define PF_OSFP_INET6 0x4000 /* IPv6 */
439 u_int8_t fp_optcnt; /* TCP option count */
440 u_int8_t fp_wscale; /* TCP window scaling */
441 u_int8_t fp_ttl; /* IPv4 TTL */
442 #define PF_OSFP_MAXTTL_OFFSET 40
443 /* TCP options packing */
444 #define PF_OSFP_TCPOPT_NOP 0x0 /* TCP NOP option */
445 #define PF_OSFP_TCPOPT_WSCALE 0x1 /* TCP window scaling option */
446 #define PF_OSFP_TCPOPT_MSS 0x2 /* TCP max segment size opt */
447 #define PF_OSFP_TCPOPT_SACK 0x3 /* TCP SACK OK option */
448 #define PF_OSFP_TCPOPT_TS 0x4 /* TCP timestamp option */
449 #define PF_OSFP_TCPOPT_BITS 3 /* bits used by each option */
450 #define PF_OSFP_MAX_OPTS \
451 (sizeof(((struct pf_os_fingerprint *)0)->fp_tcpopts) * 8) \
452 / PF_OSFP_TCPOPT_BITS
453
454 SLIST_ENTRY(pf_os_fingerprint) fp_next;
455 };
456
457 struct pf_osfp_ioctl {
458 struct pf_osfp_entry fp_os;
459 pf_tcpopts_t fp_tcpopts; /* packed TCP options */
460 u_int16_t fp_wsize; /* TCP window size */
461 u_int16_t fp_psize; /* ip->ip_len */
462 u_int16_t fp_mss; /* TCP MSS */
463 u_int16_t fp_flags;
464 u_int8_t fp_optcnt; /* TCP option count */
465 u_int8_t fp_wscale; /* TCP window scaling */
466 u_int8_t fp_ttl; /* IPv4 TTL */
467
468 int fp_getnum; /* DIOCOSFPGET number */
469 };
470
471
472 union pf_rule_ptr {
473 struct pf_rule *ptr;
474 u_int32_t nr;
475 };
476
477 #define PF_ANCHOR_NAME_SIZE 64
478
479 struct pf_rule {
480 struct pf_rule_addr src;
481 struct pf_rule_addr dst;
482 #define PF_SKIP_IFP 0
483 #define PF_SKIP_DIR 1
484 #define PF_SKIP_AF 2
485 #define PF_SKIP_PROTO 3
486 #define PF_SKIP_SRC_ADDR 4
487 #define PF_SKIP_SRC_PORT 5
488 #define PF_SKIP_DST_ADDR 6
489 #define PF_SKIP_DST_PORT 7
490 #define PF_SKIP_COUNT 8
491 union pf_rule_ptr skip[PF_SKIP_COUNT];
492 #define PF_RULE_LABEL_SIZE 64
493 char label[PF_RULE_LABEL_SIZE];
494 char ifname[IFNAMSIZ];
495 char qname[PF_QNAME_SIZE];
496 char pqname[PF_QNAME_SIZE];
497 #define PF_TAG_NAME_SIZE 64
498 char tagname[PF_TAG_NAME_SIZE];
499 char match_tagname[PF_TAG_NAME_SIZE];
500
501 char overload_tblname[PF_TABLE_NAME_SIZE];
502
503 TAILQ_ENTRY(pf_rule) entries;
504 struct pf_pool rpool;
505
506 u_int64_t evaluations;
507 u_int64_t packets[2];
508 u_int64_t bytes[2];
509
510 struct pfi_kif *kif;
511 struct pf_anchor *anchor;
512 struct pfr_ktable *overload_tbl;
513
514 pf_osfp_t os_fingerprint;
515
516 int rtableid;
517 u_int32_t timeout[PFTM_MAX];
518 u_int32_t max_states;
519 u_int32_t max_src_nodes;
520 u_int32_t max_src_states;
521 u_int32_t max_src_conn;
522 struct {
523 u_int32_t limit;
524 u_int32_t seconds;
525 } max_src_conn_rate;
526 u_int32_t qid;
527 u_int32_t pqid;
528 u_int32_t rt_listid;
529 u_int32_t nr;
530 u_int32_t prob;
531 uid_t cuid;
532 pid_t cpid;
533
534 counter_u64_t states_cur;
535 counter_u64_t states_tot;
536 counter_u64_t src_nodes;
537
538 u_int16_t return_icmp;
539 u_int16_t return_icmp6;
540 u_int16_t max_mss;
541 u_int16_t tag;
542 u_int16_t match_tag;
543 u_int16_t spare2; /* netgraph */
544
545 struct pf_rule_uid uid;
546 struct pf_rule_gid gid;
547
548 u_int32_t rule_flag;
549 u_int8_t action;
550 u_int8_t direction;
551 u_int8_t log;
552 u_int8_t logif;
553 u_int8_t quick;
554 u_int8_t ifnot;
555 u_int8_t match_tag_not;
556 u_int8_t natpass;
557
558 #define PF_STATE_NORMAL 0x1
559 #define PF_STATE_MODULATE 0x2
560 #define PF_STATE_SYNPROXY 0x3
561 u_int8_t keep_state;
562 sa_family_t af;
563 u_int8_t proto;
564 u_int8_t type;
565 u_int8_t code;
566 u_int8_t flags;
567 u_int8_t flagset;
568 u_int8_t min_ttl;
569 u_int8_t allow_opts;
570 u_int8_t rt;
571 u_int8_t return_ttl;
572 u_int8_t tos;
573 u_int8_t set_tos;
574 u_int8_t anchor_relative;
575 u_int8_t anchor_wildcard;
576
577 #define PF_FLUSH 0x01
578 #define PF_FLUSH_GLOBAL 0x02
579 u_int8_t flush;
580
581 struct {
582 struct pf_addr addr;
583 u_int16_t port;
584 } divert;
585
586 uint64_t u_states_cur;
587 uint64_t u_states_tot;
588 uint64_t u_src_nodes;
589 };
590
591 /* rule flags */
592 #define PFRULE_DROP 0x0000
593 #define PFRULE_RETURNRST 0x0001
594 #define PFRULE_FRAGMENT 0x0002
595 #define PFRULE_RETURNICMP 0x0004
596 #define PFRULE_RETURN 0x0008
597 #define PFRULE_NOSYNC 0x0010
598 #define PFRULE_SRCTRACK 0x0020 /* track source states */
599 #define PFRULE_RULESRCTRACK 0x0040 /* per rule */
600 #define PFRULE_REFS 0x0080 /* rule has references */
601
602 /* scrub flags */
603 #define PFRULE_NODF 0x0100
604 #define PFRULE_RANDOMID 0x0800
605 #define PFRULE_REASSEMBLE_TCP 0x1000
606 #define PFRULE_SET_TOS 0x2000
607
608 /* rule flags again */
609 #define PFRULE_IFBOUND 0x00010000 /* if-bound */
610 #define PFRULE_STATESLOPPY 0x00020000 /* sloppy state tracking */
611
612 #define PFSTATE_HIWAT 10000 /* default state table size */
613 #define PFSTATE_ADAPT_START 6000 /* default adaptive timeout start */
614 #define PFSTATE_ADAPT_END 12000 /* default adaptive timeout end */
615
616
617 struct pf_threshold {
618 u_int32_t limit;
619 #define PF_THRESHOLD_MULT 1000
620 #define PF_THRESHOLD_MAX 0xffffffff / PF_THRESHOLD_MULT
621 u_int32_t seconds;
622 u_int32_t count;
623 u_int32_t last;
624 };
625
626 struct pf_src_node {
627 LIST_ENTRY(pf_src_node) entry;
628 struct pf_addr addr;
629 struct pf_addr raddr;
630 union pf_rule_ptr rule;
631 struct pfi_kif *kif;
632 u_int64_t bytes[2];
633 u_int64_t packets[2];
634 u_int32_t states;
635 u_int32_t conn;
636 struct pf_threshold conn_rate;
637 u_int32_t creation;
638 u_int32_t expire;
639 sa_family_t af;
640 u_int8_t ruletype;
641 };
642
643 #define PFSNODE_HIWAT 10000 /* default source node table size */
644
645 struct pf_state_scrub {
646 struct timeval pfss_last; /* time received last packet */
647 u_int32_t pfss_tsecr; /* last echoed timestamp */
648 u_int32_t pfss_tsval; /* largest timestamp */
649 u_int32_t pfss_tsval0; /* original timestamp */
650 u_int16_t pfss_flags;
651 #define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */
652 #define PFSS_PAWS 0x0010 /* stricter PAWS checks */
653 #define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */
654 #define PFSS_DATA_TS 0x0040 /* timestamp on data packets */
655 #define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */
656 u_int8_t pfss_ttl; /* stashed TTL */
657 u_int8_t pad;
658 u_int32_t pfss_ts_mod; /* timestamp modulation */
659 };
660
661 struct pf_state_host {
662 struct pf_addr addr;
663 u_int16_t port;
664 u_int16_t pad;
665 };
666
667 struct pf_state_peer {
668 struct pf_state_scrub *scrub; /* state is scrubbed */
669 u_int32_t seqlo; /* Max sequence number sent */
670 u_int32_t seqhi; /* Max the other end ACKd + win */
671 u_int32_t seqdiff; /* Sequence number modulator */
672 u_int16_t max_win; /* largest window (pre scaling) */
673 u_int16_t mss; /* Maximum segment size option */
674 u_int8_t state; /* active state level */
675 u_int8_t wscale; /* window scaling factor */
676 u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */
677 u_int8_t pad[1];
678 };
679
680 /* Keep synced with struct pf_state_key. */
681 struct pf_state_key_cmp {
682 struct pf_addr addr[2];
683 u_int16_t port[2];
684 sa_family_t af;
685 u_int8_t proto;
686 u_int8_t pad[2];
687 };
688
689 struct pf_state_key {
690 struct pf_addr addr[2];
691 u_int16_t port[2];
692 sa_family_t af;
693 u_int8_t proto;
694 u_int8_t pad[2];
695
696 LIST_ENTRY(pf_state_key) entry;
697 TAILQ_HEAD(, pf_state) states[2];
698 };
699
700 /* Keep synced with struct pf_state. */
701 struct pf_state_cmp {
702 u_int64_t id;
703 u_int32_t creatorid;
704 u_int8_t direction;
705 u_int8_t pad[3];
706 };
707
708 struct pf_state {
709 u_int64_t id;
710 u_int32_t creatorid;
711 u_int8_t direction;
712 u_int8_t pad[3];
713
714 u_int refs;
715 TAILQ_ENTRY(pf_state) sync_list;
716 TAILQ_ENTRY(pf_state) key_list[2];
717 LIST_ENTRY(pf_state) entry;
718 struct pf_state_peer src;
719 struct pf_state_peer dst;
720 union pf_rule_ptr rule;
721 union pf_rule_ptr anchor;
722 union pf_rule_ptr nat_rule;
723 struct pf_addr rt_addr;
724 struct pf_state_key *key[2]; /* addresses stack and wire */
725 struct pfi_kif *kif;
726 struct pfi_kif *rt_kif;
727 struct pf_src_node *src_node;
728 struct pf_src_node *nat_src_node;
729 u_int64_t packets[2];
730 u_int64_t bytes[2];
731 u_int32_t creation;
732 u_int32_t expire;
733 u_int32_t pfsync_time;
734 u_int16_t tag;
735 u_int8_t log;
736 u_int8_t state_flags;
737 #define PFSTATE_ALLOWOPTS 0x01
738 #define PFSTATE_SLOPPY 0x02
739 /* was PFSTATE_PFLOW 0x04 */
740 #define PFSTATE_NOSYNC 0x08
741 #define PFSTATE_ACK 0x10
742 u_int8_t timeout;
743 u_int8_t sync_state; /* PFSYNC_S_x */
744
745 /* XXX */
746 u_int8_t sync_updates;
747 u_int8_t _tail[3];
748 };
749
750 /*
751 * Unified state structures for pulling states out of the kernel
752 * used by pfsync(4) and the pf(4) ioctl.
753 */
754 struct pfsync_state_scrub {
755 u_int16_t pfss_flags;
756 u_int8_t pfss_ttl; /* stashed TTL */
757 #define PFSYNC_SCRUB_FLAG_VALID 0x01
758 u_int8_t scrub_flag;
759 u_int32_t pfss_ts_mod; /* timestamp modulation */
760 } __packed;
761
762 struct pfsync_state_peer {
763 struct pfsync_state_scrub scrub; /* state is scrubbed */
764 u_int32_t seqlo; /* Max sequence number sent */
765 u_int32_t seqhi; /* Max the other end ACKd + win */
766 u_int32_t seqdiff; /* Sequence number modulator */
767 u_int16_t max_win; /* largest window (pre scaling) */
768 u_int16_t mss; /* Maximum segment size option */
769 u_int8_t state; /* active state level */
770 u_int8_t wscale; /* window scaling factor */
771 u_int8_t pad[6];
772 } __packed;
773
774 struct pfsync_state_key {
775 struct pf_addr addr[2];
776 u_int16_t port[2];
777 };
778
779 struct pfsync_state {
780 u_int64_t id;
781 char ifname[IFNAMSIZ];
782 struct pfsync_state_key key[2];
783 struct pfsync_state_peer src;
784 struct pfsync_state_peer dst;
785 struct pf_addr rt_addr;
786 u_int32_t rule;
787 u_int32_t anchor;
788 u_int32_t nat_rule;
789 u_int32_t creation;
790 u_int32_t expire;
791 u_int32_t packets[2][2];
792 u_int32_t bytes[2][2];
793 u_int32_t creatorid;
794 sa_family_t af;
795 u_int8_t proto;
796 u_int8_t direction;
797 u_int8_t __spare[2];
798 u_int8_t log;
799 u_int8_t state_flags;
800 u_int8_t timeout;
801 u_int8_t sync_flags;
802 u_int8_t updates;
803 } __packed;
804
805 #ifdef _KERNEL
806 /* pfsync */
807 typedef int pfsync_state_import_t(struct pfsync_state *, u_int8_t);
808 typedef void pfsync_insert_state_t(struct pf_state *);
809 typedef void pfsync_update_state_t(struct pf_state *);
810 typedef void pfsync_delete_state_t(struct pf_state *);
811 typedef void pfsync_clear_states_t(u_int32_t, const char *);
812 typedef int pfsync_defer_t(struct pf_state *, struct mbuf *);
813
814 extern pfsync_state_import_t *pfsync_state_import_ptr;
815 extern pfsync_insert_state_t *pfsync_insert_state_ptr;
816 extern pfsync_update_state_t *pfsync_update_state_ptr;
817 extern pfsync_delete_state_t *pfsync_delete_state_ptr;
818 extern pfsync_clear_states_t *pfsync_clear_states_ptr;
819 extern pfsync_defer_t *pfsync_defer_ptr;
820
821 void pfsync_state_export(struct pfsync_state *,
822 struct pf_state *);
823
824 /* pflog */
825 struct pf_ruleset;
826 struct pf_pdesc;
827 typedef int pflog_packet_t(struct pfi_kif *, struct mbuf *, sa_family_t,
828 u_int8_t, u_int8_t, struct pf_rule *, struct pf_rule *,
829 struct pf_ruleset *, struct pf_pdesc *, int);
830 extern pflog_packet_t *pflog_packet_ptr;
831
832 #define V_pf_end_threads VNET(pf_end_threads)
833 #endif /* _KERNEL */
834
835 #define PFSYNC_FLAG_SRCNODE 0x04
836 #define PFSYNC_FLAG_NATSRCNODE 0x08
837
838 /* for copies to/from network byte order */
839 /* ioctl interface also uses network byte order */
840 #define pf_state_peer_hton(s,d) do { \
841 (d)->seqlo = htonl((s)->seqlo); \
842 (d)->seqhi = htonl((s)->seqhi); \
843 (d)->seqdiff = htonl((s)->seqdiff); \
844 (d)->max_win = htons((s)->max_win); \
845 (d)->mss = htons((s)->mss); \
846 (d)->state = (s)->state; \
847 (d)->wscale = (s)->wscale; \
848 if ((s)->scrub) { \
849 (d)->scrub.pfss_flags = \
850 htons((s)->scrub->pfss_flags & PFSS_TIMESTAMP); \
851 (d)->scrub.pfss_ttl = (s)->scrub->pfss_ttl; \
852 (d)->scrub.pfss_ts_mod = htonl((s)->scrub->pfss_ts_mod);\
853 (d)->scrub.scrub_flag = PFSYNC_SCRUB_FLAG_VALID; \
854 } \
855 } while (0)
856
857 #define pf_state_peer_ntoh(s,d) do { \
858 (d)->seqlo = ntohl((s)->seqlo); \
859 (d)->seqhi = ntohl((s)->seqhi); \
860 (d)->seqdiff = ntohl((s)->seqdiff); \
861 (d)->max_win = ntohs((s)->max_win); \
862 (d)->mss = ntohs((s)->mss); \
863 (d)->state = (s)->state; \
864 (d)->wscale = (s)->wscale; \
865 if ((s)->scrub.scrub_flag == PFSYNC_SCRUB_FLAG_VALID && \
866 (d)->scrub != NULL) { \
867 (d)->scrub->pfss_flags = \
868 ntohs((s)->scrub.pfss_flags) & PFSS_TIMESTAMP; \
869 (d)->scrub->pfss_ttl = (s)->scrub.pfss_ttl; \
870 (d)->scrub->pfss_ts_mod = ntohl((s)->scrub.pfss_ts_mod);\
871 } \
872 } while (0)
873
874 #define pf_state_counter_hton(s,d) do { \
875 d[0] = htonl((s>>32)&0xffffffff); \
876 d[1] = htonl(s&0xffffffff); \
877 } while (0)
878
879 #define pf_state_counter_from_pfsync(s) \
880 (((u_int64_t)(s[0])<<32) | (u_int64_t)(s[1]))
881
882 #define pf_state_counter_ntoh(s,d) do { \
883 d = ntohl(s[0]); \
884 d = d<<32; \
885 d += ntohl(s[1]); \
886 } while (0)
887
888 TAILQ_HEAD(pf_rulequeue, pf_rule);
889
890 struct pf_anchor;
891
892 struct pf_ruleset {
893 struct {
894 struct pf_rulequeue queues[2];
895 struct {
896 struct pf_rulequeue *ptr;
897 struct pf_rule **ptr_array;
898 u_int32_t rcount;
899 u_int32_t ticket;
900 int open;
901 } active, inactive;
902 } rules[PF_RULESET_MAX];
903 struct pf_anchor *anchor;
904 u_int32_t tticket;
905 int tables;
906 int topen;
907 };
908
909 RB_HEAD(pf_anchor_global, pf_anchor);
910 RB_HEAD(pf_anchor_node, pf_anchor);
911 struct pf_anchor {
912 RB_ENTRY(pf_anchor) entry_global;
913 RB_ENTRY(pf_anchor) entry_node;
914 struct pf_anchor *parent;
915 struct pf_anchor_node children;
916 char name[PF_ANCHOR_NAME_SIZE];
917 char path[MAXPATHLEN];
918 struct pf_ruleset ruleset;
919 int refcnt; /* anchor rules */
920 int match; /* XXX: used for pfctl black magic */
921 };
922 RB_PROTOTYPE(pf_anchor_global, pf_anchor, entry_global, pf_anchor_compare);
923 RB_PROTOTYPE(pf_anchor_node, pf_anchor, entry_node, pf_anchor_compare);
924
925 #define PF_RESERVED_ANCHOR "_pf"
926
927 #define PFR_TFLAG_PERSIST 0x00000001
928 #define PFR_TFLAG_CONST 0x00000002
929 #define PFR_TFLAG_ACTIVE 0x00000004
930 #define PFR_TFLAG_INACTIVE 0x00000008
931 #define PFR_TFLAG_REFERENCED 0x00000010
932 #define PFR_TFLAG_REFDANCHOR 0x00000020
933 #define PFR_TFLAG_COUNTERS 0x00000040
934 /* Adjust masks below when adding flags. */
935 #define PFR_TFLAG_USRMASK (PFR_TFLAG_PERSIST | \
936 PFR_TFLAG_CONST | \
937 PFR_TFLAG_COUNTERS)
938 #define PFR_TFLAG_SETMASK (PFR_TFLAG_ACTIVE | \
939 PFR_TFLAG_INACTIVE | \
940 PFR_TFLAG_REFERENCED | \
941 PFR_TFLAG_REFDANCHOR)
942 #define PFR_TFLAG_ALLMASK (PFR_TFLAG_PERSIST | \
943 PFR_TFLAG_CONST | \
944 PFR_TFLAG_ACTIVE | \
945 PFR_TFLAG_INACTIVE | \
946 PFR_TFLAG_REFERENCED | \
947 PFR_TFLAG_REFDANCHOR | \
948 PFR_TFLAG_COUNTERS)
949
950 struct pf_anchor_stackframe;
951
952 struct pfr_table {
953 char pfrt_anchor[MAXPATHLEN];
954 char pfrt_name[PF_TABLE_NAME_SIZE];
955 u_int32_t pfrt_flags;
956 u_int8_t pfrt_fback;
957 };
958
959 enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED,
960 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE,
961 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_NOCOUNT, PFR_FB_MAX };
962
963 struct pfr_addr {
964 union {
965 struct in_addr _pfra_ip4addr;
966 struct in6_addr _pfra_ip6addr;
967 } pfra_u;
968 u_int8_t pfra_af;
969 u_int8_t pfra_net;
970 u_int8_t pfra_not;
971 u_int8_t pfra_fback;
972 };
973 #define pfra_ip4addr pfra_u._pfra_ip4addr
974 #define pfra_ip6addr pfra_u._pfra_ip6addr
975
976 enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX };
977 enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX };
978 #define PFR_OP_XPASS PFR_OP_ADDR_MAX
979
980 struct pfr_astats {
981 struct pfr_addr pfras_a;
982 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
983 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
984 long pfras_tzero;
985 };
986
987 enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX };
988
989 struct pfr_tstats {
990 struct pfr_table pfrts_t;
991 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
992 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
993 u_int64_t pfrts_match;
994 u_int64_t pfrts_nomatch;
995 long pfrts_tzero;
996 int pfrts_cnt;
997 int pfrts_refcnt[PFR_REFCNT_MAX];
998 };
999 #define pfrts_name pfrts_t.pfrt_name
1000 #define pfrts_flags pfrts_t.pfrt_flags
1001
1002 #ifndef _SOCKADDR_UNION_DEFINED
1003 #define _SOCKADDR_UNION_DEFINED
1004 union sockaddr_union {
1005 struct sockaddr sa;
1006 struct sockaddr_in sin;
1007 struct sockaddr_in6 sin6;
1008 };
1009 #endif /* _SOCKADDR_UNION_DEFINED */
1010
1011 struct pfr_kcounters {
1012 u_int64_t pfrkc_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
1013 u_int64_t pfrkc_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
1014 };
1015
1016 SLIST_HEAD(pfr_kentryworkq, pfr_kentry);
1017 struct pfr_kentry {
1018 struct radix_node pfrke_node[2];
1019 union sockaddr_union pfrke_sa;
1020 SLIST_ENTRY(pfr_kentry) pfrke_workq;
1021 struct pfr_kcounters *pfrke_counters;
1022 long pfrke_tzero;
1023 u_int8_t pfrke_af;
1024 u_int8_t pfrke_net;
1025 u_int8_t pfrke_not;
1026 u_int8_t pfrke_mark;
1027 };
1028
1029 SLIST_HEAD(pfr_ktableworkq, pfr_ktable);
1030 RB_HEAD(pfr_ktablehead, pfr_ktable);
1031 struct pfr_ktable {
1032 struct pfr_tstats pfrkt_ts;
1033 RB_ENTRY(pfr_ktable) pfrkt_tree;
1034 SLIST_ENTRY(pfr_ktable) pfrkt_workq;
1035 struct radix_node_head *pfrkt_ip4;
1036 struct radix_node_head *pfrkt_ip6;
1037 struct pfr_ktable *pfrkt_shadow;
1038 struct pfr_ktable *pfrkt_root;
1039 struct pf_ruleset *pfrkt_rs;
1040 long pfrkt_larg;
1041 int pfrkt_nflags;
1042 };
1043 #define pfrkt_t pfrkt_ts.pfrts_t
1044 #define pfrkt_name pfrkt_t.pfrt_name
1045 #define pfrkt_anchor pfrkt_t.pfrt_anchor
1046 #define pfrkt_ruleset pfrkt_t.pfrt_ruleset
1047 #define pfrkt_flags pfrkt_t.pfrt_flags
1048 #define pfrkt_cnt pfrkt_ts.pfrts_cnt
1049 #define pfrkt_refcnt pfrkt_ts.pfrts_refcnt
1050 #define pfrkt_packets pfrkt_ts.pfrts_packets
1051 #define pfrkt_bytes pfrkt_ts.pfrts_bytes
1052 #define pfrkt_match pfrkt_ts.pfrts_match
1053 #define pfrkt_nomatch pfrkt_ts.pfrts_nomatch
1054 #define pfrkt_tzero pfrkt_ts.pfrts_tzero
1055
1056 /* keep synced with pfi_kif, used in RB_FIND */
1057 struct pfi_kif_cmp {
1058 char pfik_name[IFNAMSIZ];
1059 };
1060
1061 struct pfi_kif {
1062 char pfik_name[IFNAMSIZ];
1063 union {
1064 RB_ENTRY(pfi_kif) _pfik_tree;
1065 LIST_ENTRY(pfi_kif) _pfik_list;
1066 } _pfik_glue;
1067 #define pfik_tree _pfik_glue._pfik_tree
1068 #define pfik_list _pfik_glue._pfik_list
1069 u_int64_t pfik_packets[2][2][2];
1070 u_int64_t pfik_bytes[2][2][2];
1071 u_int32_t pfik_tzero;
1072 u_int pfik_flags;
1073 struct ifnet *pfik_ifp;
1074 struct ifg_group *pfik_group;
1075 u_int pfik_rulerefs;
1076 TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs;
1077 };
1078
1079 #define PFI_IFLAG_REFS 0x0001 /* has state references */
1080 #define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */
1081
1082 struct pf_pdesc {
1083 struct {
1084 int done;
1085 uid_t uid;
1086 gid_t gid;
1087 } lookup;
1088 u_int64_t tot_len; /* Make Mickey money */
1089 union {
1090 struct tcphdr *tcp;
1091 struct udphdr *udp;
1092 struct icmp *icmp;
1093 #ifdef INET6
1094 struct icmp6_hdr *icmp6;
1095 #endif /* INET6 */
1096 void *any;
1097 } hdr;
1098
1099 struct pf_rule *nat_rule; /* nat/rdr rule applied to packet */
1100 struct pf_addr *src; /* src address */
1101 struct pf_addr *dst; /* dst address */
1102 u_int16_t *sport;
1103 u_int16_t *dport;
1104 struct pf_mtag *pf_mtag;
1105
1106 u_int32_t p_len; /* total length of payload */
1107
1108 u_int16_t *ip_sum;
1109 u_int16_t *proto_sum;
1110 u_int16_t flags; /* Let SCRUB trigger behavior in
1111 * state code. Easier than tags */
1112 #define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */
1113 #define PFDESC_IP_REAS 0x0002 /* IP frags would've been reassembled */
1114 sa_family_t af;
1115 u_int8_t proto;
1116 u_int8_t tos;
1117 u_int8_t dir; /* direction */
1118 u_int8_t sidx; /* key index for source */
1119 u_int8_t didx; /* key index for destination */
1120 };
1121
1122 /* flags for RDR options */
1123 #define PF_DPORT_RANGE 0x01 /* Dest port uses range */
1124 #define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */
1125
1126 /* UDP state enumeration */
1127 #define PFUDPS_NO_TRAFFIC 0
1128 #define PFUDPS_SINGLE 1
1129 #define PFUDPS_MULTIPLE 2
1130
1131 #define PFUDPS_NSTATES 3 /* number of state levels */
1132
1133 #define PFUDPS_NAMES { \
1134 "NO_TRAFFIC", \
1135 "SINGLE", \
1136 "MULTIPLE", \
1137 NULL \
1138 }
1139
1140 /* Other protocol state enumeration */
1141 #define PFOTHERS_NO_TRAFFIC 0
1142 #define PFOTHERS_SINGLE 1
1143 #define PFOTHERS_MULTIPLE 2
1144
1145 #define PFOTHERS_NSTATES 3 /* number of state levels */
1146
1147 #define PFOTHERS_NAMES { \
1148 "NO_TRAFFIC", \
1149 "SINGLE", \
1150 "MULTIPLE", \
1151 NULL \
1152 }
1153
1154 #define ACTION_SET(a, x) \
1155 do { \
1156 if ((a) != NULL) \
1157 *(a) = (x); \
1158 } while (0)
1159
1160 #define REASON_SET(a, x) \
1161 do { \
1162 if ((a) != NULL) \
1163 *(a) = (x); \
1164 if (x < PFRES_MAX) \
1165 counter_u64_add(V_pf_status.counters[x], 1); \
1166 } while (0)
1167
1168 struct pf_kstatus {
1169 counter_u64_t counters[PFRES_MAX]; /* reason for passing/dropping */
1170 counter_u64_t lcounters[LCNT_MAX]; /* limit counters */
1171 counter_u64_t fcounters[FCNT_MAX]; /* state operation counters */
1172 counter_u64_t scounters[SCNT_MAX]; /* src_node operation counters */
1173 uint32_t states;
1174 uint32_t src_nodes;
1175 uint32_t running;
1176 uint32_t since;
1177 uint32_t debug;
1178 uint32_t hostid;
1179 char ifname[IFNAMSIZ];
1180 uint8_t pf_chksum[PF_MD5_DIGEST_LENGTH];
1181 };
1182
1183 struct pf_divert {
1184 union {
1185 struct in_addr ipv4;
1186 struct in6_addr ipv6;
1187 } addr;
1188 u_int16_t port;
1189 };
1190
1191 #define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */
1192 #define PFR_KENTRY_HIWAT 200000 /* Number of table entries */
1193
1194 /*
1195 * ioctl parameter structures
1196 */
1197
1198 struct pfioc_pooladdr {
1199 u_int32_t action;
1200 u_int32_t ticket;
1201 u_int32_t nr;
1202 u_int32_t r_num;
1203 u_int8_t r_action;
1204 u_int8_t r_last;
1205 u_int8_t af;
1206 char anchor[MAXPATHLEN];
1207 struct pf_pooladdr addr;
1208 };
1209
1210 struct pfioc_rule {
1211 u_int32_t action;
1212 u_int32_t ticket;
1213 u_int32_t pool_ticket;
1214 u_int32_t nr;
1215 char anchor[MAXPATHLEN];
1216 char anchor_call[MAXPATHLEN];
1217 struct pf_rule rule;
1218 };
1219
1220 struct pfioc_natlook {
1221 struct pf_addr saddr;
1222 struct pf_addr daddr;
1223 struct pf_addr rsaddr;
1224 struct pf_addr rdaddr;
1225 u_int16_t sport;
1226 u_int16_t dport;
1227 u_int16_t rsport;
1228 u_int16_t rdport;
1229 sa_family_t af;
1230 u_int8_t proto;
1231 u_int8_t direction;
1232 };
1233
1234 struct pfioc_state {
1235 struct pfsync_state state;
1236 };
1237
1238 struct pfioc_src_node_kill {
1239 sa_family_t psnk_af;
1240 struct pf_rule_addr psnk_src;
1241 struct pf_rule_addr psnk_dst;
1242 u_int psnk_killed;
1243 };
1244
1245 struct pfioc_state_kill {
1246 struct pf_state_cmp psk_pfcmp;
1247 sa_family_t psk_af;
1248 int psk_proto;
1249 struct pf_rule_addr psk_src;
1250 struct pf_rule_addr psk_dst;
1251 char psk_ifname[IFNAMSIZ];
1252 char psk_label[PF_RULE_LABEL_SIZE];
1253 u_int psk_killed;
1254 };
1255
1256 struct pfioc_states {
1257 int ps_len;
1258 union {
1259 caddr_t psu_buf;
1260 struct pfsync_state *psu_states;
1261 } ps_u;
1262 #define ps_buf ps_u.psu_buf
1263 #define ps_states ps_u.psu_states
1264 };
1265
1266 struct pfioc_src_nodes {
1267 int psn_len;
1268 union {
1269 caddr_t psu_buf;
1270 struct pf_src_node *psu_src_nodes;
1271 } psn_u;
1272 #define psn_buf psn_u.psu_buf
1273 #define psn_src_nodes psn_u.psu_src_nodes
1274 };
1275
1276 struct pfioc_if {
1277 char ifname[IFNAMSIZ];
1278 };
1279
1280 struct pfioc_tm {
1281 int timeout;
1282 int seconds;
1283 };
1284
1285 struct pfioc_limit {
1286 int index;
1287 unsigned limit;
1288 };
1289
1290 struct pfioc_altq {
1291 u_int32_t action;
1292 u_int32_t ticket;
1293 u_int32_t nr;
1294 struct pf_altq altq;
1295 };
1296
1297 struct pfioc_qstats {
1298 u_int32_t ticket;
1299 u_int32_t nr;
1300 void *buf;
1301 int nbytes;
1302 u_int8_t scheduler;
1303 };
1304
1305 struct pfioc_ruleset {
1306 u_int32_t nr;
1307 char path[MAXPATHLEN];
1308 char name[PF_ANCHOR_NAME_SIZE];
1309 };
1310
1311 #define PF_RULESET_ALTQ (PF_RULESET_MAX)
1312 #define PF_RULESET_TABLE (PF_RULESET_MAX+1)
1313 struct pfioc_trans {
1314 int size; /* number of elements */
1315 int esize; /* size of each element in bytes */
1316 struct pfioc_trans_e {
1317 int rs_num;
1318 char anchor[MAXPATHLEN];
1319 u_int32_t ticket;
1320 } *array;
1321 };
1322
1323 #define PFR_FLAG_ATOMIC 0x00000001 /* unused */
1324 #define PFR_FLAG_DUMMY 0x00000002
1325 #define PFR_FLAG_FEEDBACK 0x00000004
1326 #define PFR_FLAG_CLSTATS 0x00000008
1327 #define PFR_FLAG_ADDRSTOO 0x00000010
1328 #define PFR_FLAG_REPLACE 0x00000020
1329 #define PFR_FLAG_ALLRSETS 0x00000040
1330 #define PFR_FLAG_ALLMASK 0x0000007F
1331 #ifdef _KERNEL
1332 #define PFR_FLAG_USERIOCTL 0x10000000
1333 #endif
1334
1335 struct pfioc_table {
1336 struct pfr_table pfrio_table;
1337 void *pfrio_buffer;
1338 int pfrio_esize;
1339 int pfrio_size;
1340 int pfrio_size2;
1341 int pfrio_nadd;
1342 int pfrio_ndel;
1343 int pfrio_nchange;
1344 int pfrio_flags;
1345 u_int32_t pfrio_ticket;
1346 };
1347 #define pfrio_exists pfrio_nadd
1348 #define pfrio_nzero pfrio_nadd
1349 #define pfrio_nmatch pfrio_nadd
1350 #define pfrio_naddr pfrio_size2
1351 #define pfrio_setflag pfrio_size2
1352 #define pfrio_clrflag pfrio_nadd
1353
1354 struct pfioc_iface {
1355 char pfiio_name[IFNAMSIZ];
1356 void *pfiio_buffer;
1357 int pfiio_esize;
1358 int pfiio_size;
1359 int pfiio_nzero;
1360 int pfiio_flags;
1361 };
1362
1363
1364 /*
1365 * ioctl operations
1366 */
1367
1368 #define DIOCSTART _IO ('D', 1)
1369 #define DIOCSTOP _IO ('D', 2)
1370 #define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule)
1371 #define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule)
1372 #define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule)
1373 /* XXX cut 8 - 17 */
1374 #define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill)
1375 #define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state)
1376 #define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if)
1377 #define DIOCGETSTATUS _IOWR('D', 21, struct pf_status)
1378 #define DIOCCLRSTATUS _IO ('D', 22)
1379 #define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook)
1380 #define DIOCSETDEBUG _IOWR('D', 24, u_int32_t)
1381 #define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states)
1382 #define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule)
1383 /* XXX cut 26 - 28 */
1384 #define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm)
1385 #define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm)
1386 #define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state)
1387 #define DIOCCLRRULECTRS _IO ('D', 38)
1388 #define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit)
1389 #define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit)
1390 #define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill)
1391 #define DIOCSTARTALTQ _IO ('D', 42)
1392 #define DIOCSTOPALTQ _IO ('D', 43)
1393 #define DIOCADDALTQ _IOWR('D', 45, struct pfioc_altq)
1394 #define DIOCGETALTQS _IOWR('D', 47, struct pfioc_altq)
1395 #define DIOCGETALTQ _IOWR('D', 48, struct pfioc_altq)
1396 #define DIOCCHANGEALTQ _IOWR('D', 49, struct pfioc_altq)
1397 #define DIOCGETQSTATS _IOWR('D', 50, struct pfioc_qstats)
1398 #define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr)
1399 #define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr)
1400 #define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr)
1401 #define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr)
1402 #define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr)
1403 /* XXX cut 55 - 57 */
1404 #define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset)
1405 #define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset)
1406 #define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table)
1407 #define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table)
1408 #define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table)
1409 #define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table)
1410 #define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table)
1411 #define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table)
1412 #define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table)
1413 #define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table)
1414 #define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table)
1415 #define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table)
1416 #define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table)
1417 #define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table)
1418 #define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table)
1419 #define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table)
1420 #define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table)
1421 #define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table)
1422 #define DIOCOSFPFLUSH _IO('D', 78)
1423 #define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl)
1424 #define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl)
1425 #define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans)
1426 #define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans)
1427 #define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans)
1428 #define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes)
1429 #define DIOCCLRSRCNODES _IO('D', 85)
1430 #define DIOCSETHOSTID _IOWR('D', 86, u_int32_t)
1431 #define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface)
1432 #define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface)
1433 #define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface)
1434 #define DIOCKILLSRCNODES _IOWR('D', 91, struct pfioc_src_node_kill)
1435 struct pf_ifspeed {
1436 char ifname[IFNAMSIZ];
1437 u_int32_t baudrate;
1438 };
1439 #define DIOCGIFSPEED _IOWR('D', 92, struct pf_ifspeed)
1440
1441 #ifdef _KERNEL
1442 LIST_HEAD(pf_src_node_list, pf_src_node);
1443 struct pf_srchash {
1444 struct pf_src_node_list nodes;
1445 struct mtx lock;
1446 };
1447
1448 struct pf_keyhash {
1449 LIST_HEAD(, pf_state_key) keys;
1450 struct mtx lock;
1451 };
1452
1453 struct pf_idhash {
1454 LIST_HEAD(, pf_state) states;
1455 struct mtx lock;
1456 };
1457
1458 extern u_long pf_hashmask;
1459 extern u_long pf_srchashmask;
1460 #define PF_HASHSIZ (32768)
1461 VNET_DECLARE(struct pf_keyhash *, pf_keyhash);
1462 VNET_DECLARE(struct pf_idhash *, pf_idhash);
1463 #define V_pf_keyhash VNET(pf_keyhash)
1464 #define V_pf_idhash VNET(pf_idhash)
1465 VNET_DECLARE(struct pf_srchash *, pf_srchash);
1466 #define V_pf_srchash VNET(pf_srchash)
1467
1468 #define PF_IDHASH(s) (be64toh((s)->id) % (pf_hashmask + 1))
1469
1470 VNET_DECLARE(void *, pf_swi_cookie);
1471 #define V_pf_swi_cookie VNET(pf_swi_cookie)
1472
1473 VNET_DECLARE(uint64_t, pf_stateid[MAXCPU]);
1474 #define V_pf_stateid VNET(pf_stateid)
1475
1476 TAILQ_HEAD(pf_altqqueue, pf_altq);
1477 VNET_DECLARE(struct pf_altqqueue, pf_altqs[2]);
1478 #define V_pf_altqs VNET(pf_altqs)
1479 VNET_DECLARE(struct pf_palist, pf_pabuf);
1480 #define V_pf_pabuf VNET(pf_pabuf)
1481
1482 VNET_DECLARE(u_int32_t, ticket_altqs_active);
1483 #define V_ticket_altqs_active VNET(ticket_altqs_active)
1484 VNET_DECLARE(u_int32_t, ticket_altqs_inactive);
1485 #define V_ticket_altqs_inactive VNET(ticket_altqs_inactive)
1486 VNET_DECLARE(int, altqs_inactive_open);
1487 #define V_altqs_inactive_open VNET(altqs_inactive_open)
1488 VNET_DECLARE(u_int32_t, ticket_pabuf);
1489 #define V_ticket_pabuf VNET(ticket_pabuf)
1490 VNET_DECLARE(struct pf_altqqueue *, pf_altqs_active);
1491 #define V_pf_altqs_active VNET(pf_altqs_active)
1492 VNET_DECLARE(struct pf_altqqueue *, pf_altqs_inactive);
1493 #define V_pf_altqs_inactive VNET(pf_altqs_inactive)
1494
1495 VNET_DECLARE(struct pf_rulequeue, pf_unlinked_rules);
1496 #define V_pf_unlinked_rules VNET(pf_unlinked_rules)
1497
1498 void pf_initialize(void);
1499 void pf_mtag_initialize(void);
1500 void pf_mtag_cleanup(void);
1501 void pf_cleanup(void);
1502
1503 struct pf_mtag *pf_get_mtag(struct mbuf *);
1504
1505 extern void pf_calc_skip_steps(struct pf_rulequeue *);
1506 #ifdef ALTQ
1507 extern void pf_altq_ifnet_event(struct ifnet *, int);
1508 #endif
1509 VNET_DECLARE(uma_zone_t, pf_state_z);
1510 #define V_pf_state_z VNET(pf_state_z)
1511 VNET_DECLARE(uma_zone_t, pf_state_key_z);
1512 #define V_pf_state_key_z VNET(pf_state_key_z)
1513 VNET_DECLARE(uma_zone_t, pf_state_scrub_z);
1514 #define V_pf_state_scrub_z VNET(pf_state_scrub_z)
1515
1516 extern void pf_purge_thread(void *);
1517 extern void pf_intr(void *);
1518 extern void pf_purge_expired_src_nodes(void);
1519
1520 extern int pf_unlink_state(struct pf_state *, u_int);
1521 #define PF_ENTER_LOCKED 0x00000001
1522 #define PF_RETURN_LOCKED 0x00000002
1523 extern int pf_state_insert(struct pfi_kif *,
1524 struct pf_state_key *,
1525 struct pf_state_key *,
1526 struct pf_state *);
1527 extern void pf_free_state(struct pf_state *);
1528
1529 static __inline void
1530 pf_ref_state(struct pf_state *s)
1531 {
1532
1533 refcount_acquire(&s->refs);
1534 }
1535
1536 static __inline int
1537 pf_release_state(struct pf_state *s)
1538 {
1539
1540 if (refcount_release(&s->refs)) {
1541 pf_free_state(s);
1542 return (1);
1543 } else
1544 return (0);
1545 }
1546
1547 extern struct pf_state *pf_find_state_byid(uint64_t, uint32_t);
1548 extern struct pf_state *pf_find_state_all(struct pf_state_key_cmp *,
1549 u_int, int *);
1550 extern struct pf_src_node *pf_find_src_node(struct pf_addr *,
1551 struct pf_rule *, sa_family_t, int);
1552 extern void pf_unlink_src_node(struct pf_src_node *);
1553 extern u_int pf_free_src_nodes(struct pf_src_node_list *);
1554 extern void pf_print_state(struct pf_state *);
1555 extern void pf_print_flags(u_int8_t);
1556 extern u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t,
1557 u_int8_t);
1558 extern u_int16_t pf_proto_cksum_fixup(struct mbuf *, u_int16_t,
1559 u_int16_t, u_int16_t, u_int8_t);
1560
1561 VNET_DECLARE(struct ifnet *, sync_ifp);
1562 #define V_sync_ifp VNET(sync_ifp);
1563 VNET_DECLARE(struct pf_rule, pf_default_rule);
1564 #define V_pf_default_rule VNET(pf_default_rule)
1565 extern void pf_addrcpy(struct pf_addr *, struct pf_addr *,
1566 u_int8_t);
1567 void pf_free_rule(struct pf_rule *);
1568
1569 #ifdef INET
1570 int pf_test(int, struct ifnet *, struct mbuf **, struct inpcb *);
1571 int pf_normalize_ip(struct mbuf **, int, struct pfi_kif *, u_short *,
1572 struct pf_pdesc *);
1573 #endif /* INET */
1574
1575 #ifdef INET6
1576 int pf_test6(int, struct ifnet *, struct mbuf **, struct inpcb *);
1577 int pf_normalize_ip6(struct mbuf **, int, struct pfi_kif *, u_short *,
1578 struct pf_pdesc *);
1579 void pf_poolmask(struct pf_addr *, struct pf_addr*,
1580 struct pf_addr *, struct pf_addr *, u_int8_t);
1581 void pf_addr_inc(struct pf_addr *, sa_family_t);
1582 int pf_refragment6(struct ifnet *, struct mbuf **, struct m_tag *);
1583 #endif /* INET6 */
1584
1585 u_int32_t pf_new_isn(struct pf_state *);
1586 void *pf_pull_hdr(struct mbuf *, int, void *, int, u_short *, u_short *,
1587 sa_family_t);
1588 void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t);
1589 void pf_change_proto_a(struct mbuf *, void *, u_int16_t *, u_int32_t,
1590 u_int8_t);
1591 void pf_change_tcp_a(struct mbuf *, void *, u_int16_t *, u_int32_t);
1592 void pf_send_deferred_syn(struct pf_state *);
1593 int pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *,
1594 struct pf_addr *, sa_family_t);
1595 int pf_match_addr_range(struct pf_addr *, struct pf_addr *,
1596 struct pf_addr *, sa_family_t);
1597 int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t);
1598
1599 void pf_normalize_init(void);
1600 void pf_normalize_cleanup(void);
1601 int pf_normalize_tcp(int, struct pfi_kif *, struct mbuf *, int, int, void *,
1602 struct pf_pdesc *);
1603 void pf_normalize_tcp_cleanup(struct pf_state *);
1604 int pf_normalize_tcp_init(struct mbuf *, int, struct pf_pdesc *,
1605 struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *);
1606 int pf_normalize_tcp_stateful(struct mbuf *, int, struct pf_pdesc *,
1607 u_short *, struct tcphdr *, struct pf_state *,
1608 struct pf_state_peer *, struct pf_state_peer *, int *);
1609 u_int32_t
1610 pf_state_expires(const struct pf_state *);
1611 void pf_purge_expired_fragments(void);
1612 int pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kif *,
1613 int);
1614 int pf_socket_lookup(int, struct pf_pdesc *, struct mbuf *);
1615 struct pf_state_key *pf_alloc_state_key(int);
1616 void pfr_initialize(void);
1617 void pfr_cleanup(void);
1618 int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t);
1619 void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t,
1620 u_int64_t, int, int, int);
1621 int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, sa_family_t);
1622 void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *);
1623 struct pfr_ktable *
1624 pfr_attach_table(struct pf_ruleset *, char *);
1625 void pfr_detach_table(struct pfr_ktable *);
1626 int pfr_clr_tables(struct pfr_table *, int *, int);
1627 int pfr_add_tables(struct pfr_table *, int, int *, int);
1628 int pfr_del_tables(struct pfr_table *, int, int *, int);
1629 int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int);
1630 int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int);
1631 int pfr_clr_tstats(struct pfr_table *, int, int *, int);
1632 int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int);
1633 int pfr_clr_addrs(struct pfr_table *, int *, int);
1634 int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *, long);
1635 int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
1636 int);
1637 int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
1638 int);
1639 int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
1640 int *, int *, int *, int, u_int32_t);
1641 int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int);
1642 int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int);
1643 int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *,
1644 int);
1645 int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
1646 int);
1647 int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int);
1648 int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int);
1649 int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int);
1650 int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *,
1651 int *, u_int32_t, int);
1652
1653 MALLOC_DECLARE(PFI_MTYPE);
1654 VNET_DECLARE(struct pfi_kif *, pfi_all);
1655 #define V_pfi_all VNET(pfi_all)
1656
1657 void pfi_initialize(void);
1658 void pfi_cleanup(void);
1659 void pfi_kif_ref(struct pfi_kif *);
1660 void pfi_kif_unref(struct pfi_kif *);
1661 struct pfi_kif *pfi_kif_find(const char *);
1662 struct pfi_kif *pfi_kif_attach(struct pfi_kif *, const char *);
1663 int pfi_kif_match(struct pfi_kif *, struct pfi_kif *);
1664 void pfi_kif_purge(void);
1665 int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *,
1666 sa_family_t);
1667 int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t);
1668 void pfi_dynaddr_remove(struct pfi_dynaddr *);
1669 void pfi_dynaddr_copyout(struct pf_addr_wrap *);
1670 void pfi_update_status(const char *, struct pf_status *);
1671 void pfi_get_ifaces(const char *, struct pfi_kif *, int *);
1672 int pfi_set_flags(const char *, int);
1673 int pfi_clear_flags(const char *, int);
1674
1675 int pf_match_tag(struct mbuf *, struct pf_rule *, int *, int);
1676 int pf_tag_packet(struct mbuf *, struct pf_pdesc *, int);
1677 int pf_addr_cmp(struct pf_addr *, struct pf_addr *,
1678 sa_family_t);
1679 void pf_qid2qname(u_int32_t, char *);
1680
1681 VNET_DECLARE(struct pf_kstatus, pf_status);
1682 #define V_pf_status VNET(pf_status)
1683
1684 struct pf_limit {
1685 uma_zone_t zone;
1686 u_int limit;
1687 };
1688 VNET_DECLARE(struct pf_limit, pf_limits[PF_LIMIT_MAX]);
1689 #define V_pf_limits VNET(pf_limits)
1690
1691 #endif /* _KERNEL */
1692
1693 #ifdef _KERNEL
1694 VNET_DECLARE(struct pf_anchor_global, pf_anchors);
1695 #define V_pf_anchors VNET(pf_anchors)
1696 VNET_DECLARE(struct pf_anchor, pf_main_anchor);
1697 #define V_pf_main_anchor VNET(pf_main_anchor)
1698 #define pf_main_ruleset V_pf_main_anchor.ruleset
1699 #endif
1700
1701 /* these ruleset functions can be linked into userland programs (pfctl) */
1702 int pf_get_ruleset_number(u_int8_t);
1703 void pf_init_ruleset(struct pf_ruleset *);
1704 int pf_anchor_setup(struct pf_rule *,
1705 const struct pf_ruleset *, const char *);
1706 int pf_anchor_copyout(const struct pf_ruleset *,
1707 const struct pf_rule *, struct pfioc_rule *);
1708 void pf_anchor_remove(struct pf_rule *);
1709 void pf_remove_if_empty_ruleset(struct pf_ruleset *);
1710 struct pf_ruleset *pf_find_ruleset(const char *);
1711 struct pf_ruleset *pf_find_or_create_ruleset(const char *);
1712 void pf_rs_initialize(void);
1713
1714 /* The fingerprint functions can be linked into userland programs (tcpdump) */
1715 int pf_osfp_add(struct pf_osfp_ioctl *);
1716 #ifdef _KERNEL
1717 struct pf_osfp_enlist *
1718 pf_osfp_fingerprint(struct pf_pdesc *, struct mbuf *, int,
1719 const struct tcphdr *);
1720 #endif /* _KERNEL */
1721 void pf_osfp_flush(void);
1722 int pf_osfp_get(struct pf_osfp_ioctl *);
1723 int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t);
1724
1725 #ifdef _KERNEL
1726 void pf_print_host(struct pf_addr *, u_int16_t, u_int8_t);
1727
1728 void pf_step_into_anchor(struct pf_anchor_stackframe *, int *,
1729 struct pf_ruleset **, int, struct pf_rule **,
1730 struct pf_rule **, int *);
1731 int pf_step_out_of_anchor(struct pf_anchor_stackframe *, int *,
1732 struct pf_ruleset **, int, struct pf_rule **,
1733 struct pf_rule **, int *);
1734
1735 int pf_map_addr(u_int8_t, struct pf_rule *,
1736 struct pf_addr *, struct pf_addr *,
1737 struct pf_addr *, struct pf_src_node **);
1738 struct pf_rule *pf_get_translation(struct pf_pdesc *, struct mbuf *,
1739 int, int, struct pfi_kif *, struct pf_src_node **,
1740 struct pf_state_key **, struct pf_state_key **,
1741 struct pf_addr *, struct pf_addr *,
1742 uint16_t, uint16_t, struct pf_anchor_stackframe *);
1743
1744 struct pf_state_key *pf_state_key_setup(struct pf_pdesc *, struct pf_addr *,
1745 struct pf_addr *, u_int16_t, u_int16_t);
1746 struct pf_state_key *pf_state_key_clone(struct pf_state_key *);
1747 #endif /* _KERNEL */
1748
1749 #endif /* _NET_PFVAR_H_ */
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