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: stable/10/sys/net/pfvar.h 284579 2015-06-18 21:21:52Z kp $
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/refcount.h>
40#include <sys/tree.h>
41
42#include <net/radix.h>
43#include <netinet/in.h>
44
45#include <netpfil/pf/pf.h>
46#include <netpfil/pf/pf_altq.h>
47#include <netpfil/pf/pf_mtag.h>
48
49struct pf_addr {
50 union {
51 struct in_addr v4;
52 struct in6_addr v6;
53 u_int8_t addr8[16];
54 u_int16_t addr16[8];
55 u_int32_t addr32[4];
56 } pfa; /* 128-bit address */
57#define v4 pfa.v4
58#define v6 pfa.v6
59#define addr8 pfa.addr8
60#define addr16 pfa.addr16
61#define addr32 pfa.addr32
62};
63
64#define PFI_AFLAG_NETWORK 0x01
65#define PFI_AFLAG_BROADCAST 0x02
66#define PFI_AFLAG_PEER 0x04
67#define PFI_AFLAG_MODEMASK 0x07
68#define PFI_AFLAG_NOALIAS 0x08
69
70struct pf_addr_wrap {
71 union {
72 struct {
73 struct pf_addr addr;
74 struct pf_addr mask;
75 } a;
76 char ifname[IFNAMSIZ];
77 char tblname[PF_TABLE_NAME_SIZE];
78 } v;
79 union {
80 struct pfi_dynaddr *dyn;
81 struct pfr_ktable *tbl;
82 int dyncnt;
83 int tblcnt;
84 } p;
85 u_int8_t type; /* PF_ADDR_* */
86 u_int8_t iflags; /* PFI_AFLAG_* */
87};
88
89#ifdef _KERNEL
90
91struct pfi_dynaddr {
92 TAILQ_ENTRY(pfi_dynaddr) entry;
93 struct pf_addr pfid_addr4;
94 struct pf_addr pfid_mask4;
95 struct pf_addr pfid_addr6;
96 struct pf_addr pfid_mask6;
97 struct pfr_ktable *pfid_kt;
98 struct pfi_kif *pfid_kif;
99 int pfid_net; /* mask or 128 */
100 int pfid_acnt4; /* address count IPv4 */
101 int pfid_acnt6; /* address count IPv6 */
102 sa_family_t pfid_af; /* rule af */
103 u_int8_t pfid_iflags; /* PFI_AFLAG_* */
104};
105
106/*
107 * Address manipulation macros
108 */
109#define HTONL(x) (x) = htonl((__uint32_t)(x))
110#define HTONS(x) (x) = htons((__uint16_t)(x))
111#define NTOHL(x) (x) = ntohl((__uint32_t)(x))
112#define NTOHS(x) (x) = ntohs((__uint16_t)(x))
113
114#define PF_NAME "pf"
115
116#define PF_HASHROW_ASSERT(h) mtx_assert(&(h)->lock, MA_OWNED)
117#define PF_HASHROW_LOCK(h) mtx_lock(&(h)->lock)
118#define PF_HASHROW_UNLOCK(h) mtx_unlock(&(h)->lock)
119
120#define PF_STATE_LOCK(s) \
121 do { \
122 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(s)]; \
123 PF_HASHROW_LOCK(_ih); \
124 } while (0)
125
126#define PF_STATE_UNLOCK(s) \
127 do { \
128 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH((s))]; \
129 PF_HASHROW_UNLOCK(_ih); \
130 } while (0)
131
132#ifdef INVARIANTS
133#define PF_STATE_LOCK_ASSERT(s) \
134 do { \
135 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(s)]; \
136 PF_HASHROW_ASSERT(_ih); \
137 } while (0)
138#else /* !INVARIANTS */
139#define PF_STATE_LOCK_ASSERT(s) do {} while (0)
140#endif /* INVARIANTS */
141
142extern struct mtx pf_unlnkdrules_mtx;
143#define PF_UNLNKDRULES_LOCK() mtx_lock(&pf_unlnkdrules_mtx)
144#define PF_UNLNKDRULES_UNLOCK() mtx_unlock(&pf_unlnkdrules_mtx)
145
146extern struct rwlock pf_rules_lock;
147#define PF_RULES_RLOCK() rw_rlock(&pf_rules_lock)
148#define PF_RULES_RUNLOCK() rw_runlock(&pf_rules_lock)
149#define PF_RULES_WLOCK() rw_wlock(&pf_rules_lock)
150#define PF_RULES_WUNLOCK() rw_wunlock(&pf_rules_lock)
151#define PF_RULES_ASSERT() rw_assert(&pf_rules_lock, RA_LOCKED)
152#define PF_RULES_RASSERT() rw_assert(&pf_rules_lock, RA_RLOCKED)
153#define PF_RULES_WASSERT() rw_assert(&pf_rules_lock, RA_WLOCKED)
154
155#define PF_MODVER 1
156#define PFLOG_MODVER 1
157#define PFSYNC_MODVER 1
158
159#define PFLOG_MINVER 1
160#define PFLOG_PREFVER PFLOG_MODVER
161#define PFLOG_MAXVER 1
162#define PFSYNC_MINVER 1
163#define PFSYNC_PREFVER PFSYNC_MODVER
164#define PFSYNC_MAXVER 1
165
166#ifdef INET
167#ifndef INET6
168#define PF_INET_ONLY
169#endif /* ! INET6 */
170#endif /* INET */
171
172#ifdef INET6
173#ifndef INET
174#define PF_INET6_ONLY
175#endif /* ! INET */
176#endif /* INET6 */
177
178#ifdef INET
179#ifdef INET6
180#define PF_INET_INET6
181#endif /* INET6 */
182#endif /* INET */
183
184#else
185
186#define PF_INET_INET6
187
188#endif /* _KERNEL */
189
190/* Both IPv4 and IPv6 */
191#ifdef PF_INET_INET6
192
193#define PF_AEQ(a, b, c) \
194 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \
195 (c == AF_INET6 && (a)->addr32[3] == (b)->addr32[3] && \
196 (a)->addr32[2] == (b)->addr32[2] && \
197 (a)->addr32[1] == (b)->addr32[1] && \
198 (a)->addr32[0] == (b)->addr32[0])) \
199
200#define PF_ANEQ(a, b, c) \
201 ((a)->addr32[0] != (b)->addr32[0] || \
202 (a)->addr32[1] != (b)->addr32[1] || \
203 (a)->addr32[2] != (b)->addr32[2] || \
204 (a)->addr32[3] != (b)->addr32[3]) \
205
206#define PF_AZERO(a, c) \
207 ((c == AF_INET && !(a)->addr32[0]) || \
208 (c == AF_INET6 && !(a)->addr32[0] && !(a)->addr32[1] && \
209 !(a)->addr32[2] && !(a)->addr32[3] )) \
210
211#define PF_MATCHA(n, a, m, b, f) \
212 pf_match_addr(n, a, m, b, f)
213
214#define PF_ACPY(a, b, f) \
215 pf_addrcpy(a, b, f)
216
217#define PF_AINC(a, f) \
218 pf_addr_inc(a, f)
219
220#define PF_POOLMASK(a, b, c, d, f) \
221 pf_poolmask(a, b, c, d, f)
222
223#else
224
225/* Just IPv6 */
226
227#ifdef PF_INET6_ONLY
228
229#define PF_AEQ(a, b, c) \
230 ((a)->addr32[3] == (b)->addr32[3] && \
231 (a)->addr32[2] == (b)->addr32[2] && \
232 (a)->addr32[1] == (b)->addr32[1] && \
233 (a)->addr32[0] == (b)->addr32[0]) \
234
235#define PF_ANEQ(a, b, c) \
236 ((a)->addr32[3] != (b)->addr32[3] || \
237 (a)->addr32[2] != (b)->addr32[2] || \
238 (a)->addr32[1] != (b)->addr32[1] || \
239 (a)->addr32[0] != (b)->addr32[0]) \
240
241#define PF_AZERO(a, c) \
242 (!(a)->addr32[0] && \
243 !(a)->addr32[1] && \
244 !(a)->addr32[2] && \
245 !(a)->addr32[3] ) \
246
247#define PF_MATCHA(n, a, m, b, f) \
248 pf_match_addr(n, a, m, b, f)
249
250#define PF_ACPY(a, b, f) \
251 pf_addrcpy(a, b, f)
252
253#define PF_AINC(a, f) \
254 pf_addr_inc(a, f)
255
256#define PF_POOLMASK(a, b, c, d, f) \
257 pf_poolmask(a, b, c, d, f)
258
259#else
260
261/* Just IPv4 */
262#ifdef PF_INET_ONLY
263
264#define PF_AEQ(a, b, c) \
265 ((a)->addr32[0] == (b)->addr32[0])
266
267#define PF_ANEQ(a, b, c) \
268 ((a)->addr32[0] != (b)->addr32[0])
269
270#define PF_AZERO(a, c) \
271 (!(a)->addr32[0])
272
273#define PF_MATCHA(n, a, m, b, f) \
274 pf_match_addr(n, a, m, b, f)
275
276#define PF_ACPY(a, b, f) \
277 (a)->v4.s_addr = (b)->v4.s_addr
278
279#define PF_AINC(a, f) \
280 do { \
281 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \
282 } while (0)
283
284#define PF_POOLMASK(a, b, c, d, f) \
285 do { \
286 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \
287 (((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \
288 } while (0)
289
290#endif /* PF_INET_ONLY */
291#endif /* PF_INET6_ONLY */
292#endif /* PF_INET_INET6 */
293
294/*
295 * XXX callers not FIB-aware in our version of pf yet.
296 * OpenBSD fixed it later it seems, 2010/05/07 13:33:16 claudio.
297 */
298#define PF_MISMATCHAW(aw, x, af, neg, ifp, rtid) \
299 ( \
300 (((aw)->type == PF_ADDR_NOROUTE && \
301 pf_routable((x), (af), NULL, (rtid))) || \
302 (((aw)->type == PF_ADDR_URPFFAILED && (ifp) != NULL && \
303 pf_routable((x), (af), (ifp), (rtid))) || \
304 ((aw)->type == PF_ADDR_TABLE && \
305 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \
306 ((aw)->type == PF_ADDR_DYNIFTL && \
307 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \
308 ((aw)->type == PF_ADDR_RANGE && \
309 !pf_match_addr_range(&(aw)->v.a.addr, \
310 &(aw)->v.a.mask, (x), (af))) || \
311 ((aw)->type == PF_ADDR_ADDRMASK && \
312 !PF_AZERO(&(aw)->v.a.mask, (af)) && \
313 !PF_MATCHA(0, &(aw)->v.a.addr, \
314 &(aw)->v.a.mask, (x), (af))))) != \
315 (neg) \
316 )
317
318
319struct pf_rule_uid {
320 uid_t uid[2];
321 u_int8_t op;
322};
323
324struct pf_rule_gid {
325 uid_t gid[2];
326 u_int8_t op;
327};
328
329struct pf_rule_addr {
330 struct pf_addr_wrap addr;
331 u_int16_t port[2];
332 u_int8_t neg;
333 u_int8_t port_op;
334};
335
336struct pf_pooladdr {
337 struct pf_addr_wrap addr;
338 TAILQ_ENTRY(pf_pooladdr) entries;
339 char ifname[IFNAMSIZ];
340 struct pfi_kif *kif;
341};
342
343TAILQ_HEAD(pf_palist, pf_pooladdr);
344
345struct pf_poolhashkey {
346 union {
347 u_int8_t key8[16];
348 u_int16_t key16[8];
349 u_int32_t key32[4];
350 } pfk; /* 128-bit hash key */
351#define key8 pfk.key8
352#define key16 pfk.key16
353#define key32 pfk.key32
354};
355
356struct pf_pool {
357 struct pf_palist list;
358 struct pf_pooladdr *cur;
359 struct pf_poolhashkey key;
360 struct pf_addr counter;
361 int tblidx;
362 u_int16_t proxy_port[2];
363 u_int8_t opts;
364};
365
366
367/* A packed Operating System description for fingerprinting */
368typedef u_int32_t pf_osfp_t;
369#define PF_OSFP_ANY ((pf_osfp_t)0)
370#define PF_OSFP_UNKNOWN ((pf_osfp_t)-1)
371#define PF_OSFP_NOMATCH ((pf_osfp_t)-2)
372
373struct pf_osfp_entry {
374 SLIST_ENTRY(pf_osfp_entry) fp_entry;
375 pf_osfp_t fp_os;
376 int fp_enflags;
377#define PF_OSFP_EXPANDED 0x001 /* expanded entry */
378#define PF_OSFP_GENERIC 0x002 /* generic signature */
379#define PF_OSFP_NODETAIL 0x004 /* no p0f details */
380#define PF_OSFP_LEN 32
381 char fp_class_nm[PF_OSFP_LEN];
382 char fp_version_nm[PF_OSFP_LEN];
383 char fp_subtype_nm[PF_OSFP_LEN];
384};
385#define PF_OSFP_ENTRY_EQ(a, b) \
386 ((a)->fp_os == (b)->fp_os && \
387 memcmp((a)->fp_class_nm, (b)->fp_class_nm, PF_OSFP_LEN) == 0 && \
388 memcmp((a)->fp_version_nm, (b)->fp_version_nm, PF_OSFP_LEN) == 0 && \
389 memcmp((a)->fp_subtype_nm, (b)->fp_subtype_nm, PF_OSFP_LEN) == 0)
390
391/* handle pf_osfp_t packing */
392#define _FP_RESERVED_BIT 1 /* For the special negative #defines */
393#define _FP_UNUSED_BITS 1
394#define _FP_CLASS_BITS 10 /* OS Class (Windows, Linux) */
395#define _FP_VERSION_BITS 10 /* OS version (95, 98, NT, 2.4.54, 3.2) */
396#define _FP_SUBTYPE_BITS 10 /* patch level (NT SP4, SP3, ECN patch) */
397#define PF_OSFP_UNPACK(osfp, class, version, subtype) do { \
398 (class) = ((osfp) >> (_FP_VERSION_BITS+_FP_SUBTYPE_BITS)) & \
399 ((1 << _FP_CLASS_BITS) - 1); \
400 (version) = ((osfp) >> _FP_SUBTYPE_BITS) & \
401 ((1 << _FP_VERSION_BITS) - 1);\
402 (subtype) = (osfp) & ((1 << _FP_SUBTYPE_BITS) - 1); \
403} while(0)
404#define PF_OSFP_PACK(osfp, class, version, subtype) do { \
405 (osfp) = ((class) & ((1 << _FP_CLASS_BITS) - 1)) << (_FP_VERSION_BITS \
406 + _FP_SUBTYPE_BITS); \
407 (osfp) |= ((version) & ((1 << _FP_VERSION_BITS) - 1)) << \
408 _FP_SUBTYPE_BITS; \
409 (osfp) |= (subtype) & ((1 << _FP_SUBTYPE_BITS) - 1); \
410} while(0)
411
412/* the fingerprint of an OSes TCP SYN packet */
413typedef u_int64_t pf_tcpopts_t;
414struct pf_os_fingerprint {
415 SLIST_HEAD(pf_osfp_enlist, pf_osfp_entry) fp_oses; /* list of matches */
416 pf_tcpopts_t fp_tcpopts; /* packed TCP options */
417 u_int16_t fp_wsize; /* TCP window size */
418 u_int16_t fp_psize; /* ip->ip_len */
419 u_int16_t fp_mss; /* TCP MSS */
420 u_int16_t fp_flags;
421#define PF_OSFP_WSIZE_MOD 0x0001 /* Window modulus */
422#define PF_OSFP_WSIZE_DC 0x0002 /* Window don't care */
423#define PF_OSFP_WSIZE_MSS 0x0004 /* Window multiple of MSS */
424#define PF_OSFP_WSIZE_MTU 0x0008 /* Window multiple of MTU */
425#define PF_OSFP_PSIZE_MOD 0x0010 /* packet size modulus */
426#define PF_OSFP_PSIZE_DC 0x0020 /* packet size don't care */
427#define PF_OSFP_WSCALE 0x0040 /* TCP window scaling */
428#define PF_OSFP_WSCALE_MOD 0x0080 /* TCP window scale modulus */
429#define PF_OSFP_WSCALE_DC 0x0100 /* TCP window scale dont-care */
430#define PF_OSFP_MSS 0x0200 /* TCP MSS */
431#define PF_OSFP_MSS_MOD 0x0400 /* TCP MSS modulus */
432#define PF_OSFP_MSS_DC 0x0800 /* TCP MSS dont-care */
433#define PF_OSFP_DF 0x1000 /* IPv4 don't fragment bit */
434#define PF_OSFP_TS0 0x2000 /* Zero timestamp */
435#define PF_OSFP_INET6 0x4000 /* IPv6 */
436 u_int8_t fp_optcnt; /* TCP option count */
437 u_int8_t fp_wscale; /* TCP window scaling */
438 u_int8_t fp_ttl; /* IPv4 TTL */
439#define PF_OSFP_MAXTTL_OFFSET 40
440/* TCP options packing */
441#define PF_OSFP_TCPOPT_NOP 0x0 /* TCP NOP option */
442#define PF_OSFP_TCPOPT_WSCALE 0x1 /* TCP window scaling option */
443#define PF_OSFP_TCPOPT_MSS 0x2 /* TCP max segment size opt */
444#define PF_OSFP_TCPOPT_SACK 0x3 /* TCP SACK OK option */
445#define PF_OSFP_TCPOPT_TS 0x4 /* TCP timestamp option */
446#define PF_OSFP_TCPOPT_BITS 3 /* bits used by each option */
447#define PF_OSFP_MAX_OPTS \
448 (sizeof(((struct pf_os_fingerprint *)0)->fp_tcpopts) * 8) \
449 / PF_OSFP_TCPOPT_BITS
450
451 SLIST_ENTRY(pf_os_fingerprint) fp_next;
452};
453
454struct pf_osfp_ioctl {
455 struct pf_osfp_entry fp_os;
456 pf_tcpopts_t fp_tcpopts; /* packed TCP options */
457 u_int16_t fp_wsize; /* TCP window size */
458 u_int16_t fp_psize; /* ip->ip_len */
459 u_int16_t fp_mss; /* TCP MSS */
460 u_int16_t fp_flags;
461 u_int8_t fp_optcnt; /* TCP option count */
462 u_int8_t fp_wscale; /* TCP window scaling */
463 u_int8_t fp_ttl; /* IPv4 TTL */
464
465 int fp_getnum; /* DIOCOSFPGET number */
466};
467
468
469union pf_rule_ptr {
470 struct pf_rule *ptr;
471 u_int32_t nr;
472};
473
474#define PF_ANCHOR_NAME_SIZE 64
475
476struct pf_rule {
477 struct pf_rule_addr src;
478 struct pf_rule_addr dst;
479#define PF_SKIP_IFP 0
480#define PF_SKIP_DIR 1
481#define PF_SKIP_AF 2
482#define PF_SKIP_PROTO 3
483#define PF_SKIP_SRC_ADDR 4
484#define PF_SKIP_SRC_PORT 5
485#define PF_SKIP_DST_ADDR 6
486#define PF_SKIP_DST_PORT 7
487#define PF_SKIP_COUNT 8
488 union pf_rule_ptr skip[PF_SKIP_COUNT];
489#define PF_RULE_LABEL_SIZE 64
490 char label[PF_RULE_LABEL_SIZE];
491 char ifname[IFNAMSIZ];
492 char qname[PF_QNAME_SIZE];
493 char pqname[PF_QNAME_SIZE];
494#define PF_TAG_NAME_SIZE 64
495 char tagname[PF_TAG_NAME_SIZE];
496 char match_tagname[PF_TAG_NAME_SIZE];
497
498 char overload_tblname[PF_TABLE_NAME_SIZE];
499
500 TAILQ_ENTRY(pf_rule) entries;
501 struct pf_pool rpool;
502
503 u_int64_t evaluations;
504 u_int64_t packets[2];
505 u_int64_t bytes[2];
506
507 struct pfi_kif *kif;
508 struct pf_anchor *anchor;
509 struct pfr_ktable *overload_tbl;
510
511 pf_osfp_t os_fingerprint;
512
513 int rtableid;
514 u_int32_t timeout[PFTM_MAX];
515 u_int32_t max_states;
516 u_int32_t max_src_nodes;
517 u_int32_t max_src_states;
518 u_int32_t max_src_conn;
519 struct {
520 u_int32_t limit;
521 u_int32_t seconds;
522 } max_src_conn_rate;
523 u_int32_t qid;
524 u_int32_t pqid;
525 u_int32_t rt_listid;
526 u_int32_t nr;
527 u_int32_t prob;
528 uid_t cuid;
529 pid_t cpid;
530
531 counter_u64_t states_cur;
532 counter_u64_t states_tot;
533 counter_u64_t src_nodes;
534
535 u_int16_t return_icmp;
536 u_int16_t return_icmp6;
537 u_int16_t max_mss;
538 u_int16_t tag;
539 u_int16_t match_tag;
540 u_int16_t spare2; /* netgraph */
541
542 struct pf_rule_uid uid;
543 struct pf_rule_gid gid;
544
545 u_int32_t rule_flag;
546 u_int8_t action;
547 u_int8_t direction;
548 u_int8_t log;
549 u_int8_t logif;
550 u_int8_t quick;
551 u_int8_t ifnot;
552 u_int8_t match_tag_not;
553 u_int8_t natpass;
554
555#define PF_STATE_NORMAL 0x1
556#define PF_STATE_MODULATE 0x2
557#define PF_STATE_SYNPROXY 0x3
558 u_int8_t keep_state;
559 sa_family_t af;
560 u_int8_t proto;
561 u_int8_t type;
562 u_int8_t code;
563 u_int8_t flags;
564 u_int8_t flagset;
565 u_int8_t min_ttl;
566 u_int8_t allow_opts;
567 u_int8_t rt;
568 u_int8_t return_ttl;
569 u_int8_t tos;
570 u_int8_t set_tos;
571 u_int8_t anchor_relative;
572 u_int8_t anchor_wildcard;
573
574#define PF_FLUSH 0x01
575#define PF_FLUSH_GLOBAL 0x02
576 u_int8_t flush;
577
578 struct {
579 struct pf_addr addr;
580 u_int16_t port;
581 } divert;
582
583 uint64_t u_states_cur;
584 uint64_t u_states_tot;
585 uint64_t u_src_nodes;
586};
587
588/* rule flags */
589#define PFRULE_DROP 0x0000
590#define PFRULE_RETURNRST 0x0001
591#define PFRULE_FRAGMENT 0x0002
592#define PFRULE_RETURNICMP 0x0004
593#define PFRULE_RETURN 0x0008
594#define PFRULE_NOSYNC 0x0010
595#define PFRULE_SRCTRACK 0x0020 /* track source states */
596#define PFRULE_RULESRCTRACK 0x0040 /* per rule */
597#define PFRULE_REFS 0x0080 /* rule has references */
598
599/* scrub flags */
600#define PFRULE_NODF 0x0100
601#define PFRULE_FRAGCROP 0x0200 /* non-buffering frag cache */
602#define PFRULE_FRAGDROP 0x0400 /* drop funny fragments */
603#define PFRULE_RANDOMID 0x0800
604#define PFRULE_REASSEMBLE_TCP 0x1000
605#define PFRULE_SET_TOS 0x2000
606
607/* rule flags again */
608#define PFRULE_IFBOUND 0x00010000 /* if-bound */
609#define PFRULE_STATESLOPPY 0x00020000 /* sloppy state tracking */
610
611#define PFSTATE_HIWAT 10000 /* default state table size */
612#define PFSTATE_ADAPT_START 6000 /* default adaptive timeout start */
613#define PFSTATE_ADAPT_END 12000 /* default adaptive timeout end */
614
615
616struct pf_threshold {
617 u_int32_t limit;
618#define PF_THRESHOLD_MULT 1000
619#define PF_THRESHOLD_MAX 0xffffffff / PF_THRESHOLD_MULT
620 u_int32_t seconds;
621 u_int32_t count;
622 u_int32_t last;
623};
624
625struct pf_src_node {
626 LIST_ENTRY(pf_src_node) entry;
627 struct pf_addr addr;
628 struct pf_addr raddr;
629 union pf_rule_ptr rule;
630 struct pfi_kif *kif;
631 u_int64_t bytes[2];
632 u_int64_t packets[2];
633 u_int32_t states;
634 u_int32_t conn;
635 struct pf_threshold conn_rate;
636 u_int32_t creation;
637 u_int32_t expire;
638 sa_family_t af;
639 u_int8_t ruletype;
640};
641
642#define PFSNODE_HIWAT 10000 /* default source node table size */
643
644struct pf_state_scrub {
645 struct timeval pfss_last; /* time received last packet */
646 u_int32_t pfss_tsecr; /* last echoed timestamp */
647 u_int32_t pfss_tsval; /* largest timestamp */
648 u_int32_t pfss_tsval0; /* original timestamp */
649 u_int16_t pfss_flags;
650#define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */
651#define PFSS_PAWS 0x0010 /* stricter PAWS checks */
652#define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */
653#define PFSS_DATA_TS 0x0040 /* timestamp on data packets */
654#define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */
655 u_int8_t pfss_ttl; /* stashed TTL */
656 u_int8_t pad;
657 u_int32_t pfss_ts_mod; /* timestamp modulation */
658};
659
660struct pf_state_host {
661 struct pf_addr addr;
662 u_int16_t port;
663 u_int16_t pad;
664};
665
666struct pf_state_peer {
667 struct pf_state_scrub *scrub; /* state is scrubbed */
668 u_int32_t seqlo; /* Max sequence number sent */
669 u_int32_t seqhi; /* Max the other end ACKd + win */
670 u_int32_t seqdiff; /* Sequence number modulator */
671 u_int16_t max_win; /* largest window (pre scaling) */
672 u_int16_t mss; /* Maximum segment size option */
673 u_int8_t state; /* active state level */
674 u_int8_t wscale; /* window scaling factor */
675 u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */
676 u_int8_t pad[1];
677};
678
679/* Keep synced with struct pf_state_key. */
680struct pf_state_key_cmp {
681 struct pf_addr addr[2];
682 u_int16_t port[2];
683 sa_family_t af;
684 u_int8_t proto;
685 u_int8_t pad[2];
686};
687
688struct pf_state_key {
689 struct pf_addr addr[2];
690 u_int16_t port[2];
691 sa_family_t af;
692 u_int8_t proto;
693 u_int8_t pad[2];
694
695 LIST_ENTRY(pf_state_key) entry;
696 TAILQ_HEAD(, pf_state) states[2];
697};
698
699/* Keep synced with struct pf_state. */
700struct pf_state_cmp {
701 u_int64_t id;
702 u_int32_t creatorid;
703 u_int8_t direction;
704 u_int8_t pad[3];
705};
706
707struct pf_state {
708 u_int64_t id;
709 u_int32_t creatorid;
710 u_int8_t direction;
711 u_int8_t pad[3];
712
713 u_int refs;
714 TAILQ_ENTRY(pf_state) sync_list;
715 TAILQ_ENTRY(pf_state) key_list[2];
716 LIST_ENTRY(pf_state) entry;
717 struct pf_state_peer src;
718 struct pf_state_peer dst;
719 union pf_rule_ptr rule;
720 union pf_rule_ptr anchor;
721 union pf_rule_ptr nat_rule;
722 struct pf_addr rt_addr;
723 struct pf_state_key *key[2]; /* addresses stack and wire */
724 struct pfi_kif *kif;
725 struct pfi_kif *rt_kif;
726 struct pf_src_node *src_node;
727 struct pf_src_node *nat_src_node;
728 u_int64_t packets[2];
729 u_int64_t bytes[2];
730 u_int32_t creation;
731 u_int32_t expire;
732 u_int32_t pfsync_time;
733 u_int16_t tag;
734 u_int8_t log;
735 u_int8_t state_flags;
736#define PFSTATE_ALLOWOPTS 0x01
737#define PFSTATE_SLOPPY 0x02
738/* was PFSTATE_PFLOW 0x04 */
739#define PFSTATE_NOSYNC 0x08
740#define PFSTATE_ACK 0x10
741 u_int8_t timeout;
742 u_int8_t sync_state; /* PFSYNC_S_x */
743
744 /* XXX */
745 u_int8_t sync_updates;
746 u_int8_t _tail[3];
747};
748
749/*
750 * Unified state structures for pulling states out of the kernel
751 * used by pfsync(4) and the pf(4) ioctl.
752 */
753struct pfsync_state_scrub {
754 u_int16_t pfss_flags;
755 u_int8_t pfss_ttl; /* stashed TTL */
756#define PFSYNC_SCRUB_FLAG_VALID 0x01
757 u_int8_t scrub_flag;
758 u_int32_t pfss_ts_mod; /* timestamp modulation */
759} __packed;
760
761struct pfsync_state_peer {
762 struct pfsync_state_scrub scrub; /* state is scrubbed */
763 u_int32_t seqlo; /* Max sequence number sent */
764 u_int32_t seqhi; /* Max the other end ACKd + win */
765 u_int32_t seqdiff; /* Sequence number modulator */
766 u_int16_t max_win; /* largest window (pre scaling) */
767 u_int16_t mss; /* Maximum segment size option */
768 u_int8_t state; /* active state level */
769 u_int8_t wscale; /* window scaling factor */
770 u_int8_t pad[6];
771} __packed;
772
773struct pfsync_state_key {
774 struct pf_addr addr[2];
775 u_int16_t port[2];
776};
777
778struct pfsync_state {
779 u_int64_t id;
780 char ifname[IFNAMSIZ];
781 struct pfsync_state_key key[2];
782 struct pfsync_state_peer src;
783 struct pfsync_state_peer dst;
784 struct pf_addr rt_addr;
785 u_int32_t rule;
786 u_int32_t anchor;
787 u_int32_t nat_rule;
788 u_int32_t creation;
789 u_int32_t expire;
790 u_int32_t packets[2][2];
791 u_int32_t bytes[2][2];
792 u_int32_t creatorid;
793 sa_family_t af;
794 u_int8_t proto;
795 u_int8_t direction;
796 u_int8_t __spare[2];
797 u_int8_t log;
798 u_int8_t state_flags;
799 u_int8_t timeout;
800 u_int8_t sync_flags;
801 u_int8_t updates;
802} __packed;
803
804#ifdef _KERNEL
805/* pfsync */
806typedef int pfsync_state_import_t(struct pfsync_state *, u_int8_t);
807typedef void pfsync_insert_state_t(struct pf_state *);
808typedef void pfsync_update_state_t(struct pf_state *);
809typedef void pfsync_delete_state_t(struct pf_state *);
810typedef void pfsync_clear_states_t(u_int32_t, const char *);
811typedef int pfsync_defer_t(struct pf_state *, struct mbuf *);
812
813extern pfsync_state_import_t *pfsync_state_import_ptr;
814extern pfsync_insert_state_t *pfsync_insert_state_ptr;
815extern pfsync_update_state_t *pfsync_update_state_ptr;
816extern pfsync_delete_state_t *pfsync_delete_state_ptr;
817extern pfsync_clear_states_t *pfsync_clear_states_ptr;
818extern pfsync_defer_t *pfsync_defer_ptr;
819
820void pfsync_state_export(struct pfsync_state *,
821 struct pf_state *);
822
823/* pflog */
824struct pf_ruleset;
825struct pf_pdesc;
826typedef int pflog_packet_t(struct pfi_kif *, struct mbuf *, sa_family_t,
827 u_int8_t, u_int8_t, struct pf_rule *, struct pf_rule *,
828 struct pf_ruleset *, struct pf_pdesc *, int);
829extern pflog_packet_t *pflog_packet_ptr;
830
831#define V_pf_end_threads VNET(pf_end_threads)
832#endif /* _KERNEL */
833
834#define PFSYNC_FLAG_SRCNODE 0x04
835#define PFSYNC_FLAG_NATSRCNODE 0x08
836
837/* for copies to/from network byte order */
838/* ioctl interface also uses network byte order */
839#define pf_state_peer_hton(s,d) do { \
840 (d)->seqlo = htonl((s)->seqlo); \
841 (d)->seqhi = htonl((s)->seqhi); \
842 (d)->seqdiff = htonl((s)->seqdiff); \
843 (d)->max_win = htons((s)->max_win); \
844 (d)->mss = htons((s)->mss); \
845 (d)->state = (s)->state; \
846 (d)->wscale = (s)->wscale; \
847 if ((s)->scrub) { \
848 (d)->scrub.pfss_flags = \
849 htons((s)->scrub->pfss_flags & PFSS_TIMESTAMP); \
850 (d)->scrub.pfss_ttl = (s)->scrub->pfss_ttl; \
851 (d)->scrub.pfss_ts_mod = htonl((s)->scrub->pfss_ts_mod);\
852 (d)->scrub.scrub_flag = PFSYNC_SCRUB_FLAG_VALID; \
853 } \
854} while (0)
855
856#define pf_state_peer_ntoh(s,d) do { \
857 (d)->seqlo = ntohl((s)->seqlo); \
858 (d)->seqhi = ntohl((s)->seqhi); \
859 (d)->seqdiff = ntohl((s)->seqdiff); \
860 (d)->max_win = ntohs((s)->max_win); \
861 (d)->mss = ntohs((s)->mss); \
862 (d)->state = (s)->state; \
863 (d)->wscale = (s)->wscale; \
864 if ((s)->scrub.scrub_flag == PFSYNC_SCRUB_FLAG_VALID && \
865 (d)->scrub != NULL) { \
866 (d)->scrub->pfss_flags = \
867 ntohs((s)->scrub.pfss_flags) & PFSS_TIMESTAMP; \
868 (d)->scrub->pfss_ttl = (s)->scrub.pfss_ttl; \
869 (d)->scrub->pfss_ts_mod = ntohl((s)->scrub.pfss_ts_mod);\
870 } \
871} while (0)
872
873#define pf_state_counter_hton(s,d) do { \
874 d[0] = htonl((s>>32)&0xffffffff); \
875 d[1] = htonl(s&0xffffffff); \
876} while (0)
877
878#define pf_state_counter_from_pfsync(s) \
879 (((u_int64_t)(s[0])<<32) | (u_int64_t)(s[1]))
880
881#define pf_state_counter_ntoh(s,d) do { \
882 d = ntohl(s[0]); \
883 d = d<<32; \
884 d += ntohl(s[1]); \
885} while (0)
886
887TAILQ_HEAD(pf_rulequeue, pf_rule);
888
889struct pf_anchor;
890
891struct pf_ruleset {
892 struct {
893 struct pf_rulequeue queues[2];
894 struct {
895 struct pf_rulequeue *ptr;
896 struct pf_rule **ptr_array;
897 u_int32_t rcount;
898 u_int32_t ticket;
899 int open;
900 } active, inactive;
901 } rules[PF_RULESET_MAX];
902 struct pf_anchor *anchor;
903 u_int32_t tticket;
904 int tables;
905 int topen;
906};
907
908RB_HEAD(pf_anchor_global, pf_anchor);
909RB_HEAD(pf_anchor_node, pf_anchor);
910struct pf_anchor {
911 RB_ENTRY(pf_anchor) entry_global;
912 RB_ENTRY(pf_anchor) entry_node;
913 struct pf_anchor *parent;
914 struct pf_anchor_node children;
915 char name[PF_ANCHOR_NAME_SIZE];
916 char path[MAXPATHLEN];
917 struct pf_ruleset ruleset;
918 int refcnt; /* anchor rules */
919 int match; /* XXX: used for pfctl black magic */
920};
921RB_PROTOTYPE(pf_anchor_global, pf_anchor, entry_global, pf_anchor_compare);
922RB_PROTOTYPE(pf_anchor_node, pf_anchor, entry_node, pf_anchor_compare);
923
924#define PF_RESERVED_ANCHOR "_pf"
925
926#define PFR_TFLAG_PERSIST 0x00000001
927#define PFR_TFLAG_CONST 0x00000002
928#define PFR_TFLAG_ACTIVE 0x00000004
929#define PFR_TFLAG_INACTIVE 0x00000008
930#define PFR_TFLAG_REFERENCED 0x00000010
931#define PFR_TFLAG_REFDANCHOR 0x00000020
932#define PFR_TFLAG_COUNTERS 0x00000040
933/* Adjust masks below when adding flags. */
934#define PFR_TFLAG_USRMASK (PFR_TFLAG_PERSIST | \
935 PFR_TFLAG_CONST | \
936 PFR_TFLAG_COUNTERS)
937#define PFR_TFLAG_SETMASK (PFR_TFLAG_ACTIVE | \
938 PFR_TFLAG_INACTIVE | \
939 PFR_TFLAG_REFERENCED | \
940 PFR_TFLAG_REFDANCHOR)
941#define PFR_TFLAG_ALLMASK (PFR_TFLAG_PERSIST | \
942 PFR_TFLAG_CONST | \
943 PFR_TFLAG_ACTIVE | \
944 PFR_TFLAG_INACTIVE | \
945 PFR_TFLAG_REFERENCED | \
946 PFR_TFLAG_REFDANCHOR | \
947 PFR_TFLAG_COUNTERS)
948
949struct pf_anchor_stackframe;
950
951struct pfr_table {
952 char pfrt_anchor[MAXPATHLEN];
953 char pfrt_name[PF_TABLE_NAME_SIZE];
954 u_int32_t pfrt_flags;
955 u_int8_t pfrt_fback;
956};
957
958enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED,
959 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE,
960 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_NOCOUNT, PFR_FB_MAX };
961
962struct pfr_addr {
963 union {
964 struct in_addr _pfra_ip4addr;
965 struct in6_addr _pfra_ip6addr;
966 } pfra_u;
967 u_int8_t pfra_af;
968 u_int8_t pfra_net;
969 u_int8_t pfra_not;
970 u_int8_t pfra_fback;
971};
972#define pfra_ip4addr pfra_u._pfra_ip4addr
973#define pfra_ip6addr pfra_u._pfra_ip6addr
974
975enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX };
976enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX };
977#define PFR_OP_XPASS PFR_OP_ADDR_MAX
978
979struct pfr_astats {
980 struct pfr_addr pfras_a;
981 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
982 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
983 long pfras_tzero;
984};
985
986enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX };
987
988struct pfr_tstats {
989 struct pfr_table pfrts_t;
990 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
991 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
992 u_int64_t pfrts_match;
993 u_int64_t pfrts_nomatch;
994 long pfrts_tzero;
995 int pfrts_cnt;
996 int pfrts_refcnt[PFR_REFCNT_MAX];
997};
998#define pfrts_name pfrts_t.pfrt_name
999#define pfrts_flags pfrts_t.pfrt_flags
1000
1001#ifndef _SOCKADDR_UNION_DEFINED
1002#define _SOCKADDR_UNION_DEFINED
1003union sockaddr_union {
1004 struct sockaddr sa;
1005 struct sockaddr_in sin;
1006 struct sockaddr_in6 sin6;
1007};
1008#endif /* _SOCKADDR_UNION_DEFINED */
1009
1010struct pfr_kcounters {
1011 u_int64_t pfrkc_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
1012 u_int64_t pfrkc_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
1013};
1014
1015SLIST_HEAD(pfr_kentryworkq, pfr_kentry);
1016struct pfr_kentry {
1017 struct radix_node pfrke_node[2];
1018 union sockaddr_union pfrke_sa;
1019 SLIST_ENTRY(pfr_kentry) pfrke_workq;
1020 struct pfr_kcounters *pfrke_counters;
1021 long pfrke_tzero;
1022 u_int8_t pfrke_af;
1023 u_int8_t pfrke_net;
1024 u_int8_t pfrke_not;
1025 u_int8_t pfrke_mark;
1026};
1027
1028SLIST_HEAD(pfr_ktableworkq, pfr_ktable);
1029RB_HEAD(pfr_ktablehead, pfr_ktable);
1030struct pfr_ktable {
1031 struct pfr_tstats pfrkt_ts;
1032 RB_ENTRY(pfr_ktable) pfrkt_tree;
1033 SLIST_ENTRY(pfr_ktable) pfrkt_workq;
1034 struct radix_node_head *pfrkt_ip4;
1035 struct radix_node_head *pfrkt_ip6;
1036 struct pfr_ktable *pfrkt_shadow;
1037 struct pfr_ktable *pfrkt_root;
1038 struct pf_ruleset *pfrkt_rs;
1039 long pfrkt_larg;
1040 int pfrkt_nflags;
1041};
1042#define pfrkt_t pfrkt_ts.pfrts_t
1043#define pfrkt_name pfrkt_t.pfrt_name
1044#define pfrkt_anchor pfrkt_t.pfrt_anchor
1045#define pfrkt_ruleset pfrkt_t.pfrt_ruleset
1046#define pfrkt_flags pfrkt_t.pfrt_flags
1047#define pfrkt_cnt pfrkt_ts.pfrts_cnt
1048#define pfrkt_refcnt pfrkt_ts.pfrts_refcnt
1049#define pfrkt_packets pfrkt_ts.pfrts_packets
1050#define pfrkt_bytes pfrkt_ts.pfrts_bytes
1051#define pfrkt_match pfrkt_ts.pfrts_match
1052#define pfrkt_nomatch pfrkt_ts.pfrts_nomatch
1053#define pfrkt_tzero pfrkt_ts.pfrts_tzero
1054
1055/* keep synced with pfi_kif, used in RB_FIND */
1056struct pfi_kif_cmp {
1057 char pfik_name[IFNAMSIZ];
1058};
1059
1060struct pfi_kif {
1061 char pfik_name[IFNAMSIZ];
1062 union {
1063 RB_ENTRY(pfi_kif) _pfik_tree;
1064 LIST_ENTRY(pfi_kif) _pfik_list;
1065 } _pfik_glue;
1066#define pfik_tree _pfik_glue._pfik_tree
1067#define pfik_list _pfik_glue._pfik_list
1068 u_int64_t pfik_packets[2][2][2];
1069 u_int64_t pfik_bytes[2][2][2];
1070 u_int32_t pfik_tzero;
1071 u_int pfik_flags;
1072 struct ifnet *pfik_ifp;
1073 struct ifg_group *pfik_group;
1074 u_int pfik_rulerefs;
1075 TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs;
1076};
1077
1078#define PFI_IFLAG_REFS 0x0001 /* has state references */
1079#define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */
1080
1081struct pf_pdesc {
1082 struct {
1083 int done;
1084 uid_t uid;
1085 gid_t gid;
1086 } lookup;
1087 u_int64_t tot_len; /* Make Mickey money */
1088 union {
1089 struct tcphdr *tcp;
1090 struct udphdr *udp;
1091 struct icmp *icmp;
1092#ifdef INET6
1093 struct icmp6_hdr *icmp6;
1094#endif /* INET6 */
1095 void *any;
1096 } hdr;
1097
1098 struct pf_rule *nat_rule; /* nat/rdr rule applied to packet */
1099 struct pf_addr *src; /* src address */
1100 struct pf_addr *dst; /* dst address */
1101 u_int16_t *sport;
1102 u_int16_t *dport;
1103 struct pf_mtag *pf_mtag;
1104
1105 u_int32_t p_len; /* total length of payload */
1106
1107 u_int16_t *ip_sum;
1108 u_int16_t *proto_sum;
1109 u_int16_t flags; /* Let SCRUB trigger behavior in
1110 * state code. Easier than tags */
1111#define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */
1112#define PFDESC_IP_REAS 0x0002 /* IP frags would've been reassembled */
1113 sa_family_t af;
1114 u_int8_t proto;
1115 u_int8_t tos;
1116 u_int8_t dir; /* direction */
1117 u_int8_t sidx; /* key index for source */
1118 u_int8_t didx; /* key index for destination */
1119};
1120
1121/* flags for RDR options */
1122#define PF_DPORT_RANGE 0x01 /* Dest port uses range */
1123#define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */
1124
1125/* UDP state enumeration */
1126#define PFUDPS_NO_TRAFFIC 0
1127#define PFUDPS_SINGLE 1
1128#define PFUDPS_MULTIPLE 2
1129
1130#define PFUDPS_NSTATES 3 /* number of state levels */
1131
1132#define PFUDPS_NAMES { \
1133 "NO_TRAFFIC", \
1134 "SINGLE", \
1135 "MULTIPLE", \
1136 NULL \
1137}
1138
1139/* Other protocol state enumeration */
1140#define PFOTHERS_NO_TRAFFIC 0
1141#define PFOTHERS_SINGLE 1
1142#define PFOTHERS_MULTIPLE 2
1143
1144#define PFOTHERS_NSTATES 3 /* number of state levels */
1145
1146#define PFOTHERS_NAMES { \
1147 "NO_TRAFFIC", \
1148 "SINGLE", \
1149 "MULTIPLE", \
1150 NULL \
1151}
1152
1153#define ACTION_SET(a, x) \
1154 do { \
1155 if ((a) != NULL) \
1156 *(a) = (x); \
1157 } while (0)
1158
1159#define REASON_SET(a, x) \
1160 do { \
1161 if ((a) != NULL) \
1162 *(a) = (x); \
1163 if (x < PFRES_MAX) \
1164 counter_u64_add(V_pf_status.counters[x], 1); \
1165 } while (0)
1166
1167struct pf_kstatus {
1168 counter_u64_t counters[PFRES_MAX]; /* reason for passing/dropping */
1169 counter_u64_t lcounters[LCNT_MAX]; /* limit counters */
1170 counter_u64_t fcounters[FCNT_MAX]; /* state operation counters */
1171 counter_u64_t scounters[SCNT_MAX]; /* src_node operation counters */
1172 uint32_t states;
1173 uint32_t src_nodes;
1174 uint32_t running;
1175 uint32_t since;
1176 uint32_t debug;
1177 uint32_t hostid;
1178 char ifname[IFNAMSIZ];
1179 uint8_t pf_chksum[PF_MD5_DIGEST_LENGTH];
1180};
1181
1182struct pf_divert {
1183 union {
1184 struct in_addr ipv4;
1185 struct in6_addr ipv6;
1186 } addr;
1187 u_int16_t port;
1188};
1189
1190#define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */
1191#define PFR_KENTRY_HIWAT 200000 /* Number of table entries */
1192
1193/*
1194 * ioctl parameter structures
1195 */
1196
1197struct pfioc_pooladdr {
1198 u_int32_t action;
1199 u_int32_t ticket;
1200 u_int32_t nr;
1201 u_int32_t r_num;
1202 u_int8_t r_action;
1203 u_int8_t r_last;
1204 u_int8_t af;
1205 char anchor[MAXPATHLEN];
1206 struct pf_pooladdr addr;
1207};
1208
1209struct pfioc_rule {
1210 u_int32_t action;
1211 u_int32_t ticket;
1212 u_int32_t pool_ticket;
1213 u_int32_t nr;
1214 char anchor[MAXPATHLEN];
1215 char anchor_call[MAXPATHLEN];
1216 struct pf_rule rule;
1217};
1218
1219struct pfioc_natlook {
1220 struct pf_addr saddr;
1221 struct pf_addr daddr;
1222 struct pf_addr rsaddr;
1223 struct pf_addr rdaddr;
1224 u_int16_t sport;
1225 u_int16_t dport;
1226 u_int16_t rsport;
1227 u_int16_t rdport;
1228 sa_family_t af;
1229 u_int8_t proto;
1230 u_int8_t direction;
1231};
1232
1233struct pfioc_state {
1234 struct pfsync_state state;
1235};
1236
1237struct pfioc_src_node_kill {
1238 sa_family_t psnk_af;
1239 struct pf_rule_addr psnk_src;
1240 struct pf_rule_addr psnk_dst;
1241 u_int psnk_killed;
1242};
1243
1244struct pfioc_state_kill {
1245 struct pf_state_cmp psk_pfcmp;
1246 sa_family_t psk_af;
1247 int psk_proto;
1248 struct pf_rule_addr psk_src;
1249 struct pf_rule_addr psk_dst;
1250 char psk_ifname[IFNAMSIZ];
1251 char psk_label[PF_RULE_LABEL_SIZE];
1252 u_int psk_killed;
1253};
1254
1255struct pfioc_states {
1256 int ps_len;
1257 union {
1258 caddr_t psu_buf;
1259 struct pfsync_state *psu_states;
1260 } ps_u;
1261#define ps_buf ps_u.psu_buf
1262#define ps_states ps_u.psu_states
1263};
1264
1265struct pfioc_src_nodes {
1266 int psn_len;
1267 union {
1268 caddr_t psu_buf;
1269 struct pf_src_node *psu_src_nodes;
1270 } psn_u;
1271#define psn_buf psn_u.psu_buf
1272#define psn_src_nodes psn_u.psu_src_nodes
1273};
1274
1275struct pfioc_if {
1276 char ifname[IFNAMSIZ];
1277};
1278
1279struct pfioc_tm {
1280 int timeout;
1281 int seconds;
1282};
1283
1284struct pfioc_limit {
1285 int index;
1286 unsigned limit;
1287};
1288
1289struct pfioc_altq {
1290 u_int32_t action;
1291 u_int32_t ticket;
1292 u_int32_t nr;
1293 struct pf_altq altq;
1294};
1295
1296struct pfioc_qstats {
1297 u_int32_t ticket;
1298 u_int32_t nr;
1299 void *buf;
1300 int nbytes;
1301 u_int8_t scheduler;
1302};
1303
1304struct pfioc_ruleset {
1305 u_int32_t nr;
1306 char path[MAXPATHLEN];
1307 char name[PF_ANCHOR_NAME_SIZE];
1308};
1309
1310#define PF_RULESET_ALTQ (PF_RULESET_MAX)
1311#define PF_RULESET_TABLE (PF_RULESET_MAX+1)
1312struct pfioc_trans {
1313 int size; /* number of elements */
1314 int esize; /* size of each element in bytes */
1315 struct pfioc_trans_e {
1316 int rs_num;
1317 char anchor[MAXPATHLEN];
1318 u_int32_t ticket;
1319 } *array;
1320};
1321
1322#define PFR_FLAG_ATOMIC 0x00000001 /* unused */
1323#define PFR_FLAG_DUMMY 0x00000002
1324#define PFR_FLAG_FEEDBACK 0x00000004
1325#define PFR_FLAG_CLSTATS 0x00000008
1326#define PFR_FLAG_ADDRSTOO 0x00000010
1327#define PFR_FLAG_REPLACE 0x00000020
1328#define PFR_FLAG_ALLRSETS 0x00000040
1329#define PFR_FLAG_ALLMASK 0x0000007F
1330#ifdef _KERNEL
1331#define PFR_FLAG_USERIOCTL 0x10000000
1332#endif
1333
1334struct pfioc_table {
1335 struct pfr_table pfrio_table;
1336 void *pfrio_buffer;
1337 int pfrio_esize;
1338 int pfrio_size;
1339 int pfrio_size2;
1340 int pfrio_nadd;
1341 int pfrio_ndel;
1342 int pfrio_nchange;
1343 int pfrio_flags;
1344 u_int32_t pfrio_ticket;
1345};
1346#define pfrio_exists pfrio_nadd
1347#define pfrio_nzero pfrio_nadd
1348#define pfrio_nmatch pfrio_nadd
1349#define pfrio_naddr pfrio_size2
1350#define pfrio_setflag pfrio_size2
1351#define pfrio_clrflag pfrio_nadd
1352
1353struct pfioc_iface {
1354 char pfiio_name[IFNAMSIZ];
1355 void *pfiio_buffer;
1356 int pfiio_esize;
1357 int pfiio_size;
1358 int pfiio_nzero;
1359 int pfiio_flags;
1360};
1361
1362
1363/*
1364 * ioctl operations
1365 */
1366
1367#define DIOCSTART _IO ('D', 1)
1368#define DIOCSTOP _IO ('D', 2)
1369#define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule)
1370#define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule)
1371#define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule)
1372/* XXX cut 8 - 17 */
1373#define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill)
1374#define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state)
1375#define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if)
1376#define DIOCGETSTATUS _IOWR('D', 21, struct pf_status)
1377#define DIOCCLRSTATUS _IO ('D', 22)
1378#define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook)
1379#define DIOCSETDEBUG _IOWR('D', 24, u_int32_t)
1380#define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states)
1381#define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule)
1382/* XXX cut 26 - 28 */
1383#define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm)
1384#define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm)
1385#define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state)
1386#define DIOCCLRRULECTRS _IO ('D', 38)
1387#define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit)
1388#define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit)
1389#define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill)
1390#define DIOCSTARTALTQ _IO ('D', 42)
1391#define DIOCSTOPALTQ _IO ('D', 43)
1392#define DIOCADDALTQ _IOWR('D', 45, struct pfioc_altq)
1393#define DIOCGETALTQS _IOWR('D', 47, struct pfioc_altq)
1394#define DIOCGETALTQ _IOWR('D', 48, struct pfioc_altq)
1395#define DIOCCHANGEALTQ _IOWR('D', 49, struct pfioc_altq)
1396#define DIOCGETQSTATS _IOWR('D', 50, struct pfioc_qstats)
1397#define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr)
1398#define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr)
1399#define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr)
1400#define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr)
1401#define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr)
1402/* XXX cut 55 - 57 */
1403#define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset)
1404#define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset)
1405#define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table)
1406#define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table)
1407#define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table)
1408#define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table)
1409#define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table)
1410#define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table)
1411#define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table)
1412#define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table)
1413#define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table)
1414#define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table)
1415#define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table)
1416#define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table)
1417#define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table)
1418#define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table)
1419#define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table)
1420#define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table)
1421#define DIOCOSFPFLUSH _IO('D', 78)
1422#define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl)
1423#define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl)
1424#define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans)
1425#define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans)
1426#define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans)
1427#define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes)
1428#define DIOCCLRSRCNODES _IO('D', 85)
1429#define DIOCSETHOSTID _IOWR('D', 86, u_int32_t)
1430#define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface)
1431#define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface)
1432#define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface)
1433#define DIOCKILLSRCNODES _IOWR('D', 91, struct pfioc_src_node_kill)
1434struct pf_ifspeed {
1435 char ifname[IFNAMSIZ];
1436 u_int32_t baudrate;
1437};
1438#define DIOCGIFSPEED _IOWR('D', 92, struct pf_ifspeed)
1439
1440#ifdef _KERNEL
1441LIST_HEAD(pf_src_node_list, pf_src_node);
1442struct pf_srchash {
1443 struct pf_src_node_list nodes;
1444 struct mtx lock;
1445};
1446
1447struct pf_keyhash {
1448 LIST_HEAD(, pf_state_key) keys;
1449 struct mtx lock;
1450};
1451
1452struct pf_idhash {
1453 LIST_HEAD(, pf_state) states;
1454 struct mtx lock;
1455};
1456
1457extern u_long pf_hashmask;
1458extern u_long pf_srchashmask;
1459#define PF_HASHSIZ (32768)
1460VNET_DECLARE(struct pf_keyhash *, pf_keyhash);
1461VNET_DECLARE(struct pf_idhash *, pf_idhash);
1462#define V_pf_keyhash VNET(pf_keyhash)
1463#define V_pf_idhash VNET(pf_idhash)
1464VNET_DECLARE(struct pf_srchash *, pf_srchash);
1465#define V_pf_srchash VNET(pf_srchash)
1466
1467#define PF_IDHASH(s) (be64toh((s)->id) % (pf_hashmask + 1))
1468
1469VNET_DECLARE(void *, pf_swi_cookie);
1470#define V_pf_swi_cookie VNET(pf_swi_cookie)
1471
1472VNET_DECLARE(uint64_t, pf_stateid[MAXCPU]);
1473#define V_pf_stateid VNET(pf_stateid)
1474
1475TAILQ_HEAD(pf_altqqueue, pf_altq);
1476VNET_DECLARE(struct pf_altqqueue, pf_altqs[2]);
1477#define V_pf_altqs VNET(pf_altqs)
1478VNET_DECLARE(struct pf_palist, pf_pabuf);
1479#define V_pf_pabuf VNET(pf_pabuf)
1480
1481VNET_DECLARE(u_int32_t, ticket_altqs_active);
1482#define V_ticket_altqs_active VNET(ticket_altqs_active)
1483VNET_DECLARE(u_int32_t, ticket_altqs_inactive);
1484#define V_ticket_altqs_inactive VNET(ticket_altqs_inactive)
1485VNET_DECLARE(int, altqs_inactive_open);
1486#define V_altqs_inactive_open VNET(altqs_inactive_open)
1487VNET_DECLARE(u_int32_t, ticket_pabuf);
1488#define V_ticket_pabuf VNET(ticket_pabuf)
1489VNET_DECLARE(struct pf_altqqueue *, pf_altqs_active);
1490#define V_pf_altqs_active VNET(pf_altqs_active)
1491VNET_DECLARE(struct pf_altqqueue *, pf_altqs_inactive);
1492#define V_pf_altqs_inactive VNET(pf_altqs_inactive)
1493
1494VNET_DECLARE(struct pf_rulequeue, pf_unlinked_rules);
1495#define V_pf_unlinked_rules VNET(pf_unlinked_rules)
1496
1497void pf_initialize(void);
1498void pf_mtag_initialize(void);
1499void pf_mtag_cleanup(void);
1500void pf_cleanup(void);
1501
1502struct pf_mtag *pf_get_mtag(struct mbuf *);
1503
1504extern void pf_calc_skip_steps(struct pf_rulequeue *);
1505#ifdef ALTQ
1506extern void pf_altq_ifnet_event(struct ifnet *, int);
1507#endif
1508VNET_DECLARE(uma_zone_t, pf_state_z);
1509#define V_pf_state_z VNET(pf_state_z)
1510VNET_DECLARE(uma_zone_t, pf_state_key_z);
1511#define V_pf_state_key_z VNET(pf_state_key_z)
1512VNET_DECLARE(uma_zone_t, pf_state_scrub_z);
1513#define V_pf_state_scrub_z VNET(pf_state_scrub_z)
1514
1515extern void pf_purge_thread(void *);
1516extern void pf_intr(void *);
1517extern void pf_purge_expired_src_nodes(void);
1518
1519extern int pf_unlink_state(struct pf_state *, u_int);
1520#define PF_ENTER_LOCKED 0x00000001
1521#define PF_RETURN_LOCKED 0x00000002
1522extern int pf_state_insert(struct pfi_kif *,
1523 struct pf_state_key *,
1524 struct pf_state_key *,
1525 struct pf_state *);
1526extern void pf_free_state(struct pf_state *);
1527
1528static __inline void
1529pf_ref_state(struct pf_state *s)
1530{
1531
1532 refcount_acquire(&s->refs);
1533}
1534
1535static __inline int
1536pf_release_state(struct pf_state *s)
1537{
1538
1539 if (refcount_release(&s->refs)) {
1540 pf_free_state(s);
1541 return (1);
1542 } else
1543 return (0);
1544}
1545
1546extern struct pf_state *pf_find_state_byid(uint64_t, uint32_t);
1547extern struct pf_state *pf_find_state_all(struct pf_state_key_cmp *,
1548 u_int, int *);
1549extern struct pf_src_node *pf_find_src_node(struct pf_addr *,
1550 struct pf_rule *, sa_family_t, int);
1551extern void pf_unlink_src_node(struct pf_src_node *);
1552extern void pf_unlink_src_node_locked(struct pf_src_node *);
1553extern u_int pf_free_src_nodes(struct pf_src_node_list *);
1554extern void pf_print_state(struct pf_state *);
1555extern void pf_print_flags(u_int8_t);
1556extern u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t,
1557 u_int8_t);
1558
1559VNET_DECLARE(struct ifnet *, sync_ifp);
1560#define V_sync_ifp VNET(sync_ifp);
1561VNET_DECLARE(struct pf_rule, pf_default_rule);
1562#define V_pf_default_rule VNET(pf_default_rule)
1563extern void pf_addrcpy(struct pf_addr *, struct pf_addr *,
1564 u_int8_t);
1565void pf_free_rule(struct pf_rule *);
1566
1567#ifdef INET
1568int pf_test(int, struct ifnet *, struct mbuf **, struct inpcb *);
1569int pf_normalize_ip(struct mbuf **, int, struct pfi_kif *, u_short *,
1570 struct pf_pdesc *);
1571#endif /* INET */
1572
1573#ifdef INET6
1574int pf_test6(int, struct ifnet *, struct mbuf **, struct inpcb *);
1575int pf_normalize_ip6(struct mbuf **, int, struct pfi_kif *, u_short *,
1576 struct pf_pdesc *);
1577void pf_poolmask(struct pf_addr *, struct pf_addr*,
1578 struct pf_addr *, struct pf_addr *, u_int8_t);
1579void pf_addr_inc(struct pf_addr *, sa_family_t);
1580int pf_refragment6(struct ifnet *, struct mbuf **, struct m_tag *);
1581#endif /* INET6 */
1582
1583u_int32_t pf_new_isn(struct pf_state *);
1584void *pf_pull_hdr(struct mbuf *, int, void *, int, u_short *, u_short *,
1585 sa_family_t);
1586void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t);
1587void pf_send_deferred_syn(struct pf_state *);
1588int pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *,
1589 struct pf_addr *, sa_family_t);
1590int pf_match_addr_range(struct pf_addr *, struct pf_addr *,
1591 struct pf_addr *, sa_family_t);
1592int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t);
1593
1594void pf_normalize_init(void);
1595void pf_normalize_cleanup(void);
1596int pf_normalize_tcp(int, struct pfi_kif *, struct mbuf *, int, int, void *,
1597 struct pf_pdesc *);
1598void pf_normalize_tcp_cleanup(struct pf_state *);
1599int pf_normalize_tcp_init(struct mbuf *, int, struct pf_pdesc *,
1600 struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *);
1601int pf_normalize_tcp_stateful(struct mbuf *, int, struct pf_pdesc *,
1602 u_short *, struct tcphdr *, struct pf_state *,
1603 struct pf_state_peer *, struct pf_state_peer *, int *);
1604u_int32_t
1605 pf_state_expires(const struct pf_state *);
1606void pf_purge_expired_fragments(void);
1607int pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kif *,
1608 int);
1609int pf_socket_lookup(int, struct pf_pdesc *, struct mbuf *);
1610struct pf_state_key *pf_alloc_state_key(int);
1611void pfr_initialize(void);
1612void pfr_cleanup(void);
1613int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t);
1614void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t,
1615 u_int64_t, int, int, int);
1616int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, sa_family_t);
1617void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *);
1618struct pfr_ktable *
1619 pfr_attach_table(struct pf_ruleset *, char *);
1620void pfr_detach_table(struct pfr_ktable *);
1621int pfr_clr_tables(struct pfr_table *, int *, int);
1622int pfr_add_tables(struct pfr_table *, int, int *, int);
1623int pfr_del_tables(struct pfr_table *, int, int *, int);
1624int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int);
1625int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int);
1626int pfr_clr_tstats(struct pfr_table *, int, int *, int);
1627int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int);
1628int pfr_clr_addrs(struct pfr_table *, int *, int);
1629int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *, long);
1630int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
1631 int);
1632int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
1633 int);
1634int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
1635 int *, int *, int *, int, u_int32_t);
1636int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int);
1637int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int);
1638int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *,
1639 int);
1640int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
1641 int);
1642int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int);
1643int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int);
1644int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int);
1645int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *,
1646 int *, u_int32_t, int);
1647
1648MALLOC_DECLARE(PFI_MTYPE);
1649VNET_DECLARE(struct pfi_kif *, pfi_all);
1650#define V_pfi_all VNET(pfi_all)
1651
1652void pfi_initialize(void);
1653void pfi_cleanup(void);
1654void pfi_kif_ref(struct pfi_kif *);
1655void pfi_kif_unref(struct pfi_kif *);
1656struct pfi_kif *pfi_kif_find(const char *);
1657struct pfi_kif *pfi_kif_attach(struct pfi_kif *, const char *);
1658int pfi_kif_match(struct pfi_kif *, struct pfi_kif *);
1659void pfi_kif_purge(void);
1660int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *,
1661 sa_family_t);
1662int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t);
1663void pfi_dynaddr_remove(struct pfi_dynaddr *);
1664void pfi_dynaddr_copyout(struct pf_addr_wrap *);
1665void pfi_update_status(const char *, struct pf_status *);
1666void pfi_get_ifaces(const char *, struct pfi_kif *, int *);
1667int pfi_set_flags(const char *, int);
1668int pfi_clear_flags(const char *, int);
1669
1670int pf_match_tag(struct mbuf *, struct pf_rule *, int *, int);
1671int pf_tag_packet(struct mbuf *, struct pf_pdesc *, int);
1672int pf_addr_cmp(struct pf_addr *, struct pf_addr *,
1673 sa_family_t);
1674void pf_qid2qname(u_int32_t, char *);
1675
1676VNET_DECLARE(struct pf_kstatus, pf_status);
1677#define V_pf_status VNET(pf_status)
1678
1679struct pf_limit {
1680 uma_zone_t zone;
1681 u_int limit;
1682};
1683VNET_DECLARE(struct pf_limit, pf_limits[PF_LIMIT_MAX]);
1684#define V_pf_limits VNET(pf_limits)
1685
1686#endif /* _KERNEL */
1687
1688#ifdef _KERNEL
1689VNET_DECLARE(struct pf_anchor_global, pf_anchors);
1690#define V_pf_anchors VNET(pf_anchors)
1691VNET_DECLARE(struct pf_anchor, pf_main_anchor);
1692#define V_pf_main_anchor VNET(pf_main_anchor)
1693#define pf_main_ruleset V_pf_main_anchor.ruleset
1694#endif
1695
1696/* these ruleset functions can be linked into userland programs (pfctl) */
1697int pf_get_ruleset_number(u_int8_t);
1698void pf_init_ruleset(struct pf_ruleset *);
1699int pf_anchor_setup(struct pf_rule *,
1700 const struct pf_ruleset *, const char *);
1701int pf_anchor_copyout(const struct pf_ruleset *,
1702 const struct pf_rule *, struct pfioc_rule *);
1703void pf_anchor_remove(struct pf_rule *);
1704void pf_remove_if_empty_ruleset(struct pf_ruleset *);
1705struct pf_ruleset *pf_find_ruleset(const char *);
1706struct pf_ruleset *pf_find_or_create_ruleset(const char *);
1707void pf_rs_initialize(void);
1708
1709/* The fingerprint functions can be linked into userland programs (tcpdump) */
1710int pf_osfp_add(struct pf_osfp_ioctl *);
1711#ifdef _KERNEL
1712struct pf_osfp_enlist *
1713 pf_osfp_fingerprint(struct pf_pdesc *, struct mbuf *, int,
1714 const struct tcphdr *);
1715#endif /* _KERNEL */
1716void pf_osfp_flush(void);
1717int pf_osfp_get(struct pf_osfp_ioctl *);
1718int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t);
1719
1720#ifdef _KERNEL
1721void pf_print_host(struct pf_addr *, u_int16_t, u_int8_t);
1722
1723void pf_step_into_anchor(struct pf_anchor_stackframe *, int *,
1724 struct pf_ruleset **, int, struct pf_rule **,
1725 struct pf_rule **, int *);
1726int pf_step_out_of_anchor(struct pf_anchor_stackframe *, int *,
1727 struct pf_ruleset **, int, struct pf_rule **,
1728 struct pf_rule **, int *);
1729
1730int pf_map_addr(u_int8_t, struct pf_rule *,
1731 struct pf_addr *, struct pf_addr *,
1732 struct pf_addr *, struct pf_src_node **);
1733struct pf_rule *pf_get_translation(struct pf_pdesc *, struct mbuf *,
1734 int, int, struct pfi_kif *, struct pf_src_node **,
1735 struct pf_state_key **, struct pf_state_key **,
1736 struct pf_addr *, struct pf_addr *,
1737 uint16_t, uint16_t, struct pf_anchor_stackframe *);
1738
1739struct pf_state_key *pf_state_key_setup(struct pf_pdesc *, struct pf_addr *,
1740 struct pf_addr *, u_int16_t, u_int16_t);
1741struct pf_state_key *pf_state_key_clone(struct pf_state_key *);
1742#endif /* _KERNEL */
1743
1744#endif /* _NET_PFVAR_H_ */
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: stable/10/sys/net/pfvar.h 284579 2015-06-18 21:21:52Z kp $
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/refcount.h>
40#include <sys/tree.h>
41
42#include <net/radix.h>
43#include <netinet/in.h>
44
45#include <netpfil/pf/pf.h>
46#include <netpfil/pf/pf_altq.h>
47#include <netpfil/pf/pf_mtag.h>
48
49struct pf_addr {
50 union {
51 struct in_addr v4;
52 struct in6_addr v6;
53 u_int8_t addr8[16];
54 u_int16_t addr16[8];
55 u_int32_t addr32[4];
56 } pfa; /* 128-bit address */
57#define v4 pfa.v4
58#define v6 pfa.v6
59#define addr8 pfa.addr8
60#define addr16 pfa.addr16
61#define addr32 pfa.addr32
62};
63
64#define PFI_AFLAG_NETWORK 0x01
65#define PFI_AFLAG_BROADCAST 0x02
66#define PFI_AFLAG_PEER 0x04
67#define PFI_AFLAG_MODEMASK 0x07
68#define PFI_AFLAG_NOALIAS 0x08
69
70struct pf_addr_wrap {
71 union {
72 struct {
73 struct pf_addr addr;
74 struct pf_addr mask;
75 } a;
76 char ifname[IFNAMSIZ];
77 char tblname[PF_TABLE_NAME_SIZE];
78 } v;
79 union {
80 struct pfi_dynaddr *dyn;
81 struct pfr_ktable *tbl;
82 int dyncnt;
83 int tblcnt;
84 } p;
85 u_int8_t type; /* PF_ADDR_* */
86 u_int8_t iflags; /* PFI_AFLAG_* */
87};
88
89#ifdef _KERNEL
90
91struct pfi_dynaddr {
92 TAILQ_ENTRY(pfi_dynaddr) entry;
93 struct pf_addr pfid_addr4;
94 struct pf_addr pfid_mask4;
95 struct pf_addr pfid_addr6;
96 struct pf_addr pfid_mask6;
97 struct pfr_ktable *pfid_kt;
98 struct pfi_kif *pfid_kif;
99 int pfid_net; /* mask or 128 */
100 int pfid_acnt4; /* address count IPv4 */
101 int pfid_acnt6; /* address count IPv6 */
102 sa_family_t pfid_af; /* rule af */
103 u_int8_t pfid_iflags; /* PFI_AFLAG_* */
104};
105
106/*
107 * Address manipulation macros
108 */
109#define HTONL(x) (x) = htonl((__uint32_t)(x))
110#define HTONS(x) (x) = htons((__uint16_t)(x))
111#define NTOHL(x) (x) = ntohl((__uint32_t)(x))
112#define NTOHS(x) (x) = ntohs((__uint16_t)(x))
113
114#define PF_NAME "pf"
115
116#define PF_HASHROW_ASSERT(h) mtx_assert(&(h)->lock, MA_OWNED)
117#define PF_HASHROW_LOCK(h) mtx_lock(&(h)->lock)
118#define PF_HASHROW_UNLOCK(h) mtx_unlock(&(h)->lock)
119
120#define PF_STATE_LOCK(s) \
121 do { \
122 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(s)]; \
123 PF_HASHROW_LOCK(_ih); \
124 } while (0)
125
126#define PF_STATE_UNLOCK(s) \
127 do { \
128 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH((s))]; \
129 PF_HASHROW_UNLOCK(_ih); \
130 } while (0)
131
132#ifdef INVARIANTS
133#define PF_STATE_LOCK_ASSERT(s) \
134 do { \
135 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(s)]; \
136 PF_HASHROW_ASSERT(_ih); \
137 } while (0)
138#else /* !INVARIANTS */
139#define PF_STATE_LOCK_ASSERT(s) do {} while (0)
140#endif /* INVARIANTS */
141
142extern struct mtx pf_unlnkdrules_mtx;
143#define PF_UNLNKDRULES_LOCK() mtx_lock(&pf_unlnkdrules_mtx)
144#define PF_UNLNKDRULES_UNLOCK() mtx_unlock(&pf_unlnkdrules_mtx)
145
146extern struct rwlock pf_rules_lock;
147#define PF_RULES_RLOCK() rw_rlock(&pf_rules_lock)
148#define PF_RULES_RUNLOCK() rw_runlock(&pf_rules_lock)
149#define PF_RULES_WLOCK() rw_wlock(&pf_rules_lock)
150#define PF_RULES_WUNLOCK() rw_wunlock(&pf_rules_lock)
151#define PF_RULES_ASSERT() rw_assert(&pf_rules_lock, RA_LOCKED)
152#define PF_RULES_RASSERT() rw_assert(&pf_rules_lock, RA_RLOCKED)
153#define PF_RULES_WASSERT() rw_assert(&pf_rules_lock, RA_WLOCKED)
154
155#define PF_MODVER 1
156#define PFLOG_MODVER 1
157#define PFSYNC_MODVER 1
158
159#define PFLOG_MINVER 1
160#define PFLOG_PREFVER PFLOG_MODVER
161#define PFLOG_MAXVER 1
162#define PFSYNC_MINVER 1
163#define PFSYNC_PREFVER PFSYNC_MODVER
164#define PFSYNC_MAXVER 1
165
166#ifdef INET
167#ifndef INET6
168#define PF_INET_ONLY
169#endif /* ! INET6 */
170#endif /* INET */
171
172#ifdef INET6
173#ifndef INET
174#define PF_INET6_ONLY
175#endif /* ! INET */
176#endif /* INET6 */
177
178#ifdef INET
179#ifdef INET6
180#define PF_INET_INET6
181#endif /* INET6 */
182#endif /* INET */
183
184#else
185
186#define PF_INET_INET6
187
188#endif /* _KERNEL */
189
190/* Both IPv4 and IPv6 */
191#ifdef PF_INET_INET6
192
193#define PF_AEQ(a, b, c) \
194 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \
195 (c == AF_INET6 && (a)->addr32[3] == (b)->addr32[3] && \
196 (a)->addr32[2] == (b)->addr32[2] && \
197 (a)->addr32[1] == (b)->addr32[1] && \
198 (a)->addr32[0] == (b)->addr32[0])) \
199
200#define PF_ANEQ(a, b, c) \
201 ((a)->addr32[0] != (b)->addr32[0] || \
202 (a)->addr32[1] != (b)->addr32[1] || \
203 (a)->addr32[2] != (b)->addr32[2] || \
204 (a)->addr32[3] != (b)->addr32[3]) \
205
206#define PF_AZERO(a, c) \
207 ((c == AF_INET && !(a)->addr32[0]) || \
208 (c == AF_INET6 && !(a)->addr32[0] && !(a)->addr32[1] && \
209 !(a)->addr32[2] && !(a)->addr32[3] )) \
210
211#define PF_MATCHA(n, a, m, b, f) \
212 pf_match_addr(n, a, m, b, f)
213
214#define PF_ACPY(a, b, f) \
215 pf_addrcpy(a, b, f)
216
217#define PF_AINC(a, f) \
218 pf_addr_inc(a, f)
219
220#define PF_POOLMASK(a, b, c, d, f) \
221 pf_poolmask(a, b, c, d, f)
222
223#else
224
225/* Just IPv6 */
226
227#ifdef PF_INET6_ONLY
228
229#define PF_AEQ(a, b, c) \
230 ((a)->addr32[3] == (b)->addr32[3] && \
231 (a)->addr32[2] == (b)->addr32[2] && \
232 (a)->addr32[1] == (b)->addr32[1] && \
233 (a)->addr32[0] == (b)->addr32[0]) \
234
235#define PF_ANEQ(a, b, c) \
236 ((a)->addr32[3] != (b)->addr32[3] || \
237 (a)->addr32[2] != (b)->addr32[2] || \
238 (a)->addr32[1] != (b)->addr32[1] || \
239 (a)->addr32[0] != (b)->addr32[0]) \
240
241#define PF_AZERO(a, c) \
242 (!(a)->addr32[0] && \
243 !(a)->addr32[1] && \
244 !(a)->addr32[2] && \
245 !(a)->addr32[3] ) \
246
247#define PF_MATCHA(n, a, m, b, f) \
248 pf_match_addr(n, a, m, b, f)
249
250#define PF_ACPY(a, b, f) \
251 pf_addrcpy(a, b, f)
252
253#define PF_AINC(a, f) \
254 pf_addr_inc(a, f)
255
256#define PF_POOLMASK(a, b, c, d, f) \
257 pf_poolmask(a, b, c, d, f)
258
259#else
260
261/* Just IPv4 */
262#ifdef PF_INET_ONLY
263
264#define PF_AEQ(a, b, c) \
265 ((a)->addr32[0] == (b)->addr32[0])
266
267#define PF_ANEQ(a, b, c) \
268 ((a)->addr32[0] != (b)->addr32[0])
269
270#define PF_AZERO(a, c) \
271 (!(a)->addr32[0])
272
273#define PF_MATCHA(n, a, m, b, f) \
274 pf_match_addr(n, a, m, b, f)
275
276#define PF_ACPY(a, b, f) \
277 (a)->v4.s_addr = (b)->v4.s_addr
278
279#define PF_AINC(a, f) \
280 do { \
281 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \
282 } while (0)
283
284#define PF_POOLMASK(a, b, c, d, f) \
285 do { \
286 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \
287 (((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \
288 } while (0)
289
290#endif /* PF_INET_ONLY */
291#endif /* PF_INET6_ONLY */
292#endif /* PF_INET_INET6 */
293
294/*
295 * XXX callers not FIB-aware in our version of pf yet.
296 * OpenBSD fixed it later it seems, 2010/05/07 13:33:16 claudio.
297 */
298#define PF_MISMATCHAW(aw, x, af, neg, ifp, rtid) \
299 ( \
300 (((aw)->type == PF_ADDR_NOROUTE && \
301 pf_routable((x), (af), NULL, (rtid))) || \
302 (((aw)->type == PF_ADDR_URPFFAILED && (ifp) != NULL && \
303 pf_routable((x), (af), (ifp), (rtid))) || \
304 ((aw)->type == PF_ADDR_TABLE && \
305 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \
306 ((aw)->type == PF_ADDR_DYNIFTL && \
307 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \
308 ((aw)->type == PF_ADDR_RANGE && \
309 !pf_match_addr_range(&(aw)->v.a.addr, \
310 &(aw)->v.a.mask, (x), (af))) || \
311 ((aw)->type == PF_ADDR_ADDRMASK && \
312 !PF_AZERO(&(aw)->v.a.mask, (af)) && \
313 !PF_MATCHA(0, &(aw)->v.a.addr, \
314 &(aw)->v.a.mask, (x), (af))))) != \
315 (neg) \
316 )
317
318
319struct pf_rule_uid {
320 uid_t uid[2];
321 u_int8_t op;
322};
323
324struct pf_rule_gid {
325 uid_t gid[2];
326 u_int8_t op;
327};
328
329struct pf_rule_addr {
330 struct pf_addr_wrap addr;
331 u_int16_t port[2];
332 u_int8_t neg;
333 u_int8_t port_op;
334};
335
336struct pf_pooladdr {
337 struct pf_addr_wrap addr;
338 TAILQ_ENTRY(pf_pooladdr) entries;
339 char ifname[IFNAMSIZ];
340 struct pfi_kif *kif;
341};
342
343TAILQ_HEAD(pf_palist, pf_pooladdr);
344
345struct pf_poolhashkey {
346 union {
347 u_int8_t key8[16];
348 u_int16_t key16[8];
349 u_int32_t key32[4];
350 } pfk; /* 128-bit hash key */
351#define key8 pfk.key8
352#define key16 pfk.key16
353#define key32 pfk.key32
354};
355
356struct pf_pool {
357 struct pf_palist list;
358 struct pf_pooladdr *cur;
359 struct pf_poolhashkey key;
360 struct pf_addr counter;
361 int tblidx;
362 u_int16_t proxy_port[2];
363 u_int8_t opts;
364};
365
366
367/* A packed Operating System description for fingerprinting */
368typedef u_int32_t pf_osfp_t;
369#define PF_OSFP_ANY ((pf_osfp_t)0)
370#define PF_OSFP_UNKNOWN ((pf_osfp_t)-1)
371#define PF_OSFP_NOMATCH ((pf_osfp_t)-2)
372
373struct pf_osfp_entry {
374 SLIST_ENTRY(pf_osfp_entry) fp_entry;
375 pf_osfp_t fp_os;
376 int fp_enflags;
377#define PF_OSFP_EXPANDED 0x001 /* expanded entry */
378#define PF_OSFP_GENERIC 0x002 /* generic signature */
379#define PF_OSFP_NODETAIL 0x004 /* no p0f details */
380#define PF_OSFP_LEN 32
381 char fp_class_nm[PF_OSFP_LEN];
382 char fp_version_nm[PF_OSFP_LEN];
383 char fp_subtype_nm[PF_OSFP_LEN];
384};
385#define PF_OSFP_ENTRY_EQ(a, b) \
386 ((a)->fp_os == (b)->fp_os && \
387 memcmp((a)->fp_class_nm, (b)->fp_class_nm, PF_OSFP_LEN) == 0 && \
388 memcmp((a)->fp_version_nm, (b)->fp_version_nm, PF_OSFP_LEN) == 0 && \
389 memcmp((a)->fp_subtype_nm, (b)->fp_subtype_nm, PF_OSFP_LEN) == 0)
390
391/* handle pf_osfp_t packing */
392#define _FP_RESERVED_BIT 1 /* For the special negative #defines */
393#define _FP_UNUSED_BITS 1
394#define _FP_CLASS_BITS 10 /* OS Class (Windows, Linux) */
395#define _FP_VERSION_BITS 10 /* OS version (95, 98, NT, 2.4.54, 3.2) */
396#define _FP_SUBTYPE_BITS 10 /* patch level (NT SP4, SP3, ECN patch) */
397#define PF_OSFP_UNPACK(osfp, class, version, subtype) do { \
398 (class) = ((osfp) >> (_FP_VERSION_BITS+_FP_SUBTYPE_BITS)) & \
399 ((1 << _FP_CLASS_BITS) - 1); \
400 (version) = ((osfp) >> _FP_SUBTYPE_BITS) & \
401 ((1 << _FP_VERSION_BITS) - 1);\
402 (subtype) = (osfp) & ((1 << _FP_SUBTYPE_BITS) - 1); \
403} while(0)
404#define PF_OSFP_PACK(osfp, class, version, subtype) do { \
405 (osfp) = ((class) & ((1 << _FP_CLASS_BITS) - 1)) << (_FP_VERSION_BITS \
406 + _FP_SUBTYPE_BITS); \
407 (osfp) |= ((version) & ((1 << _FP_VERSION_BITS) - 1)) << \
408 _FP_SUBTYPE_BITS; \
409 (osfp) |= (subtype) & ((1 << _FP_SUBTYPE_BITS) - 1); \
410} while(0)
411
412/* the fingerprint of an OSes TCP SYN packet */
413typedef u_int64_t pf_tcpopts_t;
414struct pf_os_fingerprint {
415 SLIST_HEAD(pf_osfp_enlist, pf_osfp_entry) fp_oses; /* list of matches */
416 pf_tcpopts_t fp_tcpopts; /* packed TCP options */
417 u_int16_t fp_wsize; /* TCP window size */
418 u_int16_t fp_psize; /* ip->ip_len */
419 u_int16_t fp_mss; /* TCP MSS */
420 u_int16_t fp_flags;
421#define PF_OSFP_WSIZE_MOD 0x0001 /* Window modulus */
422#define PF_OSFP_WSIZE_DC 0x0002 /* Window don't care */
423#define PF_OSFP_WSIZE_MSS 0x0004 /* Window multiple of MSS */
424#define PF_OSFP_WSIZE_MTU 0x0008 /* Window multiple of MTU */
425#define PF_OSFP_PSIZE_MOD 0x0010 /* packet size modulus */
426#define PF_OSFP_PSIZE_DC 0x0020 /* packet size don't care */
427#define PF_OSFP_WSCALE 0x0040 /* TCP window scaling */
428#define PF_OSFP_WSCALE_MOD 0x0080 /* TCP window scale modulus */
429#define PF_OSFP_WSCALE_DC 0x0100 /* TCP window scale dont-care */
430#define PF_OSFP_MSS 0x0200 /* TCP MSS */
431#define PF_OSFP_MSS_MOD 0x0400 /* TCP MSS modulus */
432#define PF_OSFP_MSS_DC 0x0800 /* TCP MSS dont-care */
433#define PF_OSFP_DF 0x1000 /* IPv4 don't fragment bit */
434#define PF_OSFP_TS0 0x2000 /* Zero timestamp */
435#define PF_OSFP_INET6 0x4000 /* IPv6 */
436 u_int8_t fp_optcnt; /* TCP option count */
437 u_int8_t fp_wscale; /* TCP window scaling */
438 u_int8_t fp_ttl; /* IPv4 TTL */
439#define PF_OSFP_MAXTTL_OFFSET 40
440/* TCP options packing */
441#define PF_OSFP_TCPOPT_NOP 0x0 /* TCP NOP option */
442#define PF_OSFP_TCPOPT_WSCALE 0x1 /* TCP window scaling option */
443#define PF_OSFP_TCPOPT_MSS 0x2 /* TCP max segment size opt */
444#define PF_OSFP_TCPOPT_SACK 0x3 /* TCP SACK OK option */
445#define PF_OSFP_TCPOPT_TS 0x4 /* TCP timestamp option */
446#define PF_OSFP_TCPOPT_BITS 3 /* bits used by each option */
447#define PF_OSFP_MAX_OPTS \
448 (sizeof(((struct pf_os_fingerprint *)0)->fp_tcpopts) * 8) \
449 / PF_OSFP_TCPOPT_BITS
450
451 SLIST_ENTRY(pf_os_fingerprint) fp_next;
452};
453
454struct pf_osfp_ioctl {
455 struct pf_osfp_entry fp_os;
456 pf_tcpopts_t fp_tcpopts; /* packed TCP options */
457 u_int16_t fp_wsize; /* TCP window size */
458 u_int16_t fp_psize; /* ip->ip_len */
459 u_int16_t fp_mss; /* TCP MSS */
460 u_int16_t fp_flags;
461 u_int8_t fp_optcnt; /* TCP option count */
462 u_int8_t fp_wscale; /* TCP window scaling */
463 u_int8_t fp_ttl; /* IPv4 TTL */
464
465 int fp_getnum; /* DIOCOSFPGET number */
466};
467
468
469union pf_rule_ptr {
470 struct pf_rule *ptr;
471 u_int32_t nr;
472};
473
474#define PF_ANCHOR_NAME_SIZE 64
475
476struct pf_rule {
477 struct pf_rule_addr src;
478 struct pf_rule_addr dst;
479#define PF_SKIP_IFP 0
480#define PF_SKIP_DIR 1
481#define PF_SKIP_AF 2
482#define PF_SKIP_PROTO 3
483#define PF_SKIP_SRC_ADDR 4
484#define PF_SKIP_SRC_PORT 5
485#define PF_SKIP_DST_ADDR 6
486#define PF_SKIP_DST_PORT 7
487#define PF_SKIP_COUNT 8
488 union pf_rule_ptr skip[PF_SKIP_COUNT];
489#define PF_RULE_LABEL_SIZE 64
490 char label[PF_RULE_LABEL_SIZE];
491 char ifname[IFNAMSIZ];
492 char qname[PF_QNAME_SIZE];
493 char pqname[PF_QNAME_SIZE];
494#define PF_TAG_NAME_SIZE 64
495 char tagname[PF_TAG_NAME_SIZE];
496 char match_tagname[PF_TAG_NAME_SIZE];
497
498 char overload_tblname[PF_TABLE_NAME_SIZE];
499
500 TAILQ_ENTRY(pf_rule) entries;
501 struct pf_pool rpool;
502
503 u_int64_t evaluations;
504 u_int64_t packets[2];
505 u_int64_t bytes[2];
506
507 struct pfi_kif *kif;
508 struct pf_anchor *anchor;
509 struct pfr_ktable *overload_tbl;
510
511 pf_osfp_t os_fingerprint;
512
513 int rtableid;
514 u_int32_t timeout[PFTM_MAX];
515 u_int32_t max_states;
516 u_int32_t max_src_nodes;
517 u_int32_t max_src_states;
518 u_int32_t max_src_conn;
519 struct {
520 u_int32_t limit;
521 u_int32_t seconds;
522 } max_src_conn_rate;
523 u_int32_t qid;
524 u_int32_t pqid;
525 u_int32_t rt_listid;
526 u_int32_t nr;
527 u_int32_t prob;
528 uid_t cuid;
529 pid_t cpid;
530
531 counter_u64_t states_cur;
532 counter_u64_t states_tot;
533 counter_u64_t src_nodes;
534
535 u_int16_t return_icmp;
536 u_int16_t return_icmp6;
537 u_int16_t max_mss;
538 u_int16_t tag;
539 u_int16_t match_tag;
540 u_int16_t spare2; /* netgraph */
541
542 struct pf_rule_uid uid;
543 struct pf_rule_gid gid;
544
545 u_int32_t rule_flag;
546 u_int8_t action;
547 u_int8_t direction;
548 u_int8_t log;
549 u_int8_t logif;
550 u_int8_t quick;
551 u_int8_t ifnot;
552 u_int8_t match_tag_not;
553 u_int8_t natpass;
554
555#define PF_STATE_NORMAL 0x1
556#define PF_STATE_MODULATE 0x2
557#define PF_STATE_SYNPROXY 0x3
558 u_int8_t keep_state;
559 sa_family_t af;
560 u_int8_t proto;
561 u_int8_t type;
562 u_int8_t code;
563 u_int8_t flags;
564 u_int8_t flagset;
565 u_int8_t min_ttl;
566 u_int8_t allow_opts;
567 u_int8_t rt;
568 u_int8_t return_ttl;
569 u_int8_t tos;
570 u_int8_t set_tos;
571 u_int8_t anchor_relative;
572 u_int8_t anchor_wildcard;
573
574#define PF_FLUSH 0x01
575#define PF_FLUSH_GLOBAL 0x02
576 u_int8_t flush;
577
578 struct {
579 struct pf_addr addr;
580 u_int16_t port;
581 } divert;
582
583 uint64_t u_states_cur;
584 uint64_t u_states_tot;
585 uint64_t u_src_nodes;
586};
587
588/* rule flags */
589#define PFRULE_DROP 0x0000
590#define PFRULE_RETURNRST 0x0001
591#define PFRULE_FRAGMENT 0x0002
592#define PFRULE_RETURNICMP 0x0004
593#define PFRULE_RETURN 0x0008
594#define PFRULE_NOSYNC 0x0010
595#define PFRULE_SRCTRACK 0x0020 /* track source states */
596#define PFRULE_RULESRCTRACK 0x0040 /* per rule */
597#define PFRULE_REFS 0x0080 /* rule has references */
598
599/* scrub flags */
600#define PFRULE_NODF 0x0100
601#define PFRULE_FRAGCROP 0x0200 /* non-buffering frag cache */
602#define PFRULE_FRAGDROP 0x0400 /* drop funny fragments */
603#define PFRULE_RANDOMID 0x0800
604#define PFRULE_REASSEMBLE_TCP 0x1000
605#define PFRULE_SET_TOS 0x2000
606
607/* rule flags again */
608#define PFRULE_IFBOUND 0x00010000 /* if-bound */
609#define PFRULE_STATESLOPPY 0x00020000 /* sloppy state tracking */
610
611#define PFSTATE_HIWAT 10000 /* default state table size */
612#define PFSTATE_ADAPT_START 6000 /* default adaptive timeout start */
613#define PFSTATE_ADAPT_END 12000 /* default adaptive timeout end */
614
615
616struct pf_threshold {
617 u_int32_t limit;
618#define PF_THRESHOLD_MULT 1000
619#define PF_THRESHOLD_MAX 0xffffffff / PF_THRESHOLD_MULT
620 u_int32_t seconds;
621 u_int32_t count;
622 u_int32_t last;
623};
624
625struct pf_src_node {
626 LIST_ENTRY(pf_src_node) entry;
627 struct pf_addr addr;
628 struct pf_addr raddr;
629 union pf_rule_ptr rule;
630 struct pfi_kif *kif;
631 u_int64_t bytes[2];
632 u_int64_t packets[2];
633 u_int32_t states;
634 u_int32_t conn;
635 struct pf_threshold conn_rate;
636 u_int32_t creation;
637 u_int32_t expire;
638 sa_family_t af;
639 u_int8_t ruletype;
640};
641
642#define PFSNODE_HIWAT 10000 /* default source node table size */
643
644struct pf_state_scrub {
645 struct timeval pfss_last; /* time received last packet */
646 u_int32_t pfss_tsecr; /* last echoed timestamp */
647 u_int32_t pfss_tsval; /* largest timestamp */
648 u_int32_t pfss_tsval0; /* original timestamp */
649 u_int16_t pfss_flags;
650#define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */
651#define PFSS_PAWS 0x0010 /* stricter PAWS checks */
652#define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */
653#define PFSS_DATA_TS 0x0040 /* timestamp on data packets */
654#define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */
655 u_int8_t pfss_ttl; /* stashed TTL */
656 u_int8_t pad;
657 u_int32_t pfss_ts_mod; /* timestamp modulation */
658};
659
660struct pf_state_host {
661 struct pf_addr addr;
662 u_int16_t port;
663 u_int16_t pad;
664};
665
666struct pf_state_peer {
667 struct pf_state_scrub *scrub; /* state is scrubbed */
668 u_int32_t seqlo; /* Max sequence number sent */
669 u_int32_t seqhi; /* Max the other end ACKd + win */
670 u_int32_t seqdiff; /* Sequence number modulator */
671 u_int16_t max_win; /* largest window (pre scaling) */
672 u_int16_t mss; /* Maximum segment size option */
673 u_int8_t state; /* active state level */
674 u_int8_t wscale; /* window scaling factor */
675 u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */
676 u_int8_t pad[1];
677};
678
679/* Keep synced with struct pf_state_key. */
680struct pf_state_key_cmp {
681 struct pf_addr addr[2];
682 u_int16_t port[2];
683 sa_family_t af;
684 u_int8_t proto;
685 u_int8_t pad[2];
686};
687
688struct pf_state_key {
689 struct pf_addr addr[2];
690 u_int16_t port[2];
691 sa_family_t af;
692 u_int8_t proto;
693 u_int8_t pad[2];
694
695 LIST_ENTRY(pf_state_key) entry;
696 TAILQ_HEAD(, pf_state) states[2];
697};
698
699/* Keep synced with struct pf_state. */
700struct pf_state_cmp {
701 u_int64_t id;
702 u_int32_t creatorid;
703 u_int8_t direction;
704 u_int8_t pad[3];
705};
706
707struct pf_state {
708 u_int64_t id;
709 u_int32_t creatorid;
710 u_int8_t direction;
711 u_int8_t pad[3];
712
713 u_int refs;
714 TAILQ_ENTRY(pf_state) sync_list;
715 TAILQ_ENTRY(pf_state) key_list[2];
716 LIST_ENTRY(pf_state) entry;
717 struct pf_state_peer src;
718 struct pf_state_peer dst;
719 union pf_rule_ptr rule;
720 union pf_rule_ptr anchor;
721 union pf_rule_ptr nat_rule;
722 struct pf_addr rt_addr;
723 struct pf_state_key *key[2]; /* addresses stack and wire */
724 struct pfi_kif *kif;
725 struct pfi_kif *rt_kif;
726 struct pf_src_node *src_node;
727 struct pf_src_node *nat_src_node;
728 u_int64_t packets[2];
729 u_int64_t bytes[2];
730 u_int32_t creation;
731 u_int32_t expire;
732 u_int32_t pfsync_time;
733 u_int16_t tag;
734 u_int8_t log;
735 u_int8_t state_flags;
736#define PFSTATE_ALLOWOPTS 0x01
737#define PFSTATE_SLOPPY 0x02
738/* was PFSTATE_PFLOW 0x04 */
739#define PFSTATE_NOSYNC 0x08
740#define PFSTATE_ACK 0x10
741 u_int8_t timeout;
742 u_int8_t sync_state; /* PFSYNC_S_x */
743
744 /* XXX */
745 u_int8_t sync_updates;
746 u_int8_t _tail[3];
747};
748
749/*
750 * Unified state structures for pulling states out of the kernel
751 * used by pfsync(4) and the pf(4) ioctl.
752 */
753struct pfsync_state_scrub {
754 u_int16_t pfss_flags;
755 u_int8_t pfss_ttl; /* stashed TTL */
756#define PFSYNC_SCRUB_FLAG_VALID 0x01
757 u_int8_t scrub_flag;
758 u_int32_t pfss_ts_mod; /* timestamp modulation */
759} __packed;
760
761struct pfsync_state_peer {
762 struct pfsync_state_scrub scrub; /* state is scrubbed */
763 u_int32_t seqlo; /* Max sequence number sent */
764 u_int32_t seqhi; /* Max the other end ACKd + win */
765 u_int32_t seqdiff; /* Sequence number modulator */
766 u_int16_t max_win; /* largest window (pre scaling) */
767 u_int16_t mss; /* Maximum segment size option */
768 u_int8_t state; /* active state level */
769 u_int8_t wscale; /* window scaling factor */
770 u_int8_t pad[6];
771} __packed;
772
773struct pfsync_state_key {
774 struct pf_addr addr[2];
775 u_int16_t port[2];
776};
777
778struct pfsync_state {
779 u_int64_t id;
780 char ifname[IFNAMSIZ];
781 struct pfsync_state_key key[2];
782 struct pfsync_state_peer src;
783 struct pfsync_state_peer dst;
784 struct pf_addr rt_addr;
785 u_int32_t rule;
786 u_int32_t anchor;
787 u_int32_t nat_rule;
788 u_int32_t creation;
789 u_int32_t expire;
790 u_int32_t packets[2][2];
791 u_int32_t bytes[2][2];
792 u_int32_t creatorid;
793 sa_family_t af;
794 u_int8_t proto;
795 u_int8_t direction;
796 u_int8_t __spare[2];
797 u_int8_t log;
798 u_int8_t state_flags;
799 u_int8_t timeout;
800 u_int8_t sync_flags;
801 u_int8_t updates;
802} __packed;
803
804#ifdef _KERNEL
805/* pfsync */
806typedef int pfsync_state_import_t(struct pfsync_state *, u_int8_t);
807typedef void pfsync_insert_state_t(struct pf_state *);
808typedef void pfsync_update_state_t(struct pf_state *);
809typedef void pfsync_delete_state_t(struct pf_state *);
810typedef void pfsync_clear_states_t(u_int32_t, const char *);
811typedef int pfsync_defer_t(struct pf_state *, struct mbuf *);
812
813extern pfsync_state_import_t *pfsync_state_import_ptr;
814extern pfsync_insert_state_t *pfsync_insert_state_ptr;
815extern pfsync_update_state_t *pfsync_update_state_ptr;
816extern pfsync_delete_state_t *pfsync_delete_state_ptr;
817extern pfsync_clear_states_t *pfsync_clear_states_ptr;
818extern pfsync_defer_t *pfsync_defer_ptr;
819
820void pfsync_state_export(struct pfsync_state *,
821 struct pf_state *);
822
823/* pflog */
824struct pf_ruleset;
825struct pf_pdesc;
826typedef int pflog_packet_t(struct pfi_kif *, struct mbuf *, sa_family_t,
827 u_int8_t, u_int8_t, struct pf_rule *, struct pf_rule *,
828 struct pf_ruleset *, struct pf_pdesc *, int);
829extern pflog_packet_t *pflog_packet_ptr;
830
831#define V_pf_end_threads VNET(pf_end_threads)
832#endif /* _KERNEL */
833
834#define PFSYNC_FLAG_SRCNODE 0x04
835#define PFSYNC_FLAG_NATSRCNODE 0x08
836
837/* for copies to/from network byte order */
838/* ioctl interface also uses network byte order */
839#define pf_state_peer_hton(s,d) do { \
840 (d)->seqlo = htonl((s)->seqlo); \
841 (d)->seqhi = htonl((s)->seqhi); \
842 (d)->seqdiff = htonl((s)->seqdiff); \
843 (d)->max_win = htons((s)->max_win); \
844 (d)->mss = htons((s)->mss); \
845 (d)->state = (s)->state; \
846 (d)->wscale = (s)->wscale; \
847 if ((s)->scrub) { \
848 (d)->scrub.pfss_flags = \
849 htons((s)->scrub->pfss_flags & PFSS_TIMESTAMP); \
850 (d)->scrub.pfss_ttl = (s)->scrub->pfss_ttl; \
851 (d)->scrub.pfss_ts_mod = htonl((s)->scrub->pfss_ts_mod);\
852 (d)->scrub.scrub_flag = PFSYNC_SCRUB_FLAG_VALID; \
853 } \
854} while (0)
855
856#define pf_state_peer_ntoh(s,d) do { \
857 (d)->seqlo = ntohl((s)->seqlo); \
858 (d)->seqhi = ntohl((s)->seqhi); \
859 (d)->seqdiff = ntohl((s)->seqdiff); \
860 (d)->max_win = ntohs((s)->max_win); \
861 (d)->mss = ntohs((s)->mss); \
862 (d)->state = (s)->state; \
863 (d)->wscale = (s)->wscale; \
864 if ((s)->scrub.scrub_flag == PFSYNC_SCRUB_FLAG_VALID && \
865 (d)->scrub != NULL) { \
866 (d)->scrub->pfss_flags = \
867 ntohs((s)->scrub.pfss_flags) & PFSS_TIMESTAMP; \
868 (d)->scrub->pfss_ttl = (s)->scrub.pfss_ttl; \
869 (d)->scrub->pfss_ts_mod = ntohl((s)->scrub.pfss_ts_mod);\
870 } \
871} while (0)
872
873#define pf_state_counter_hton(s,d) do { \
874 d[0] = htonl((s>>32)&0xffffffff); \
875 d[1] = htonl(s&0xffffffff); \
876} while (0)
877
878#define pf_state_counter_from_pfsync(s) \
879 (((u_int64_t)(s[0])<<32) | (u_int64_t)(s[1]))
880
881#define pf_state_counter_ntoh(s,d) do { \
882 d = ntohl(s[0]); \
883 d = d<<32; \
884 d += ntohl(s[1]); \
885} while (0)
886
887TAILQ_HEAD(pf_rulequeue, pf_rule);
888
889struct pf_anchor;
890
891struct pf_ruleset {
892 struct {
893 struct pf_rulequeue queues[2];
894 struct {
895 struct pf_rulequeue *ptr;
896 struct pf_rule **ptr_array;
897 u_int32_t rcount;
898 u_int32_t ticket;
899 int open;
900 } active, inactive;
901 } rules[PF_RULESET_MAX];
902 struct pf_anchor *anchor;
903 u_int32_t tticket;
904 int tables;
905 int topen;
906};
907
908RB_HEAD(pf_anchor_global, pf_anchor);
909RB_HEAD(pf_anchor_node, pf_anchor);
910struct pf_anchor {
911 RB_ENTRY(pf_anchor) entry_global;
912 RB_ENTRY(pf_anchor) entry_node;
913 struct pf_anchor *parent;
914 struct pf_anchor_node children;
915 char name[PF_ANCHOR_NAME_SIZE];
916 char path[MAXPATHLEN];
917 struct pf_ruleset ruleset;
918 int refcnt; /* anchor rules */
919 int match; /* XXX: used for pfctl black magic */
920};
921RB_PROTOTYPE(pf_anchor_global, pf_anchor, entry_global, pf_anchor_compare);
922RB_PROTOTYPE(pf_anchor_node, pf_anchor, entry_node, pf_anchor_compare);
923
924#define PF_RESERVED_ANCHOR "_pf"
925
926#define PFR_TFLAG_PERSIST 0x00000001
927#define PFR_TFLAG_CONST 0x00000002
928#define PFR_TFLAG_ACTIVE 0x00000004
929#define PFR_TFLAG_INACTIVE 0x00000008
930#define PFR_TFLAG_REFERENCED 0x00000010
931#define PFR_TFLAG_REFDANCHOR 0x00000020
932#define PFR_TFLAG_COUNTERS 0x00000040
933/* Adjust masks below when adding flags. */
934#define PFR_TFLAG_USRMASK (PFR_TFLAG_PERSIST | \
935 PFR_TFLAG_CONST | \
936 PFR_TFLAG_COUNTERS)
937#define PFR_TFLAG_SETMASK (PFR_TFLAG_ACTIVE | \
938 PFR_TFLAG_INACTIVE | \
939 PFR_TFLAG_REFERENCED | \
940 PFR_TFLAG_REFDANCHOR)
941#define PFR_TFLAG_ALLMASK (PFR_TFLAG_PERSIST | \
942 PFR_TFLAG_CONST | \
943 PFR_TFLAG_ACTIVE | \
944 PFR_TFLAG_INACTIVE | \
945 PFR_TFLAG_REFERENCED | \
946 PFR_TFLAG_REFDANCHOR | \
947 PFR_TFLAG_COUNTERS)
948
949struct pf_anchor_stackframe;
950
951struct pfr_table {
952 char pfrt_anchor[MAXPATHLEN];
953 char pfrt_name[PF_TABLE_NAME_SIZE];
954 u_int32_t pfrt_flags;
955 u_int8_t pfrt_fback;
956};
957
958enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED,
959 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE,
960 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_NOCOUNT, PFR_FB_MAX };
961
962struct pfr_addr {
963 union {
964 struct in_addr _pfra_ip4addr;
965 struct in6_addr _pfra_ip6addr;
966 } pfra_u;
967 u_int8_t pfra_af;
968 u_int8_t pfra_net;
969 u_int8_t pfra_not;
970 u_int8_t pfra_fback;
971};
972#define pfra_ip4addr pfra_u._pfra_ip4addr
973#define pfra_ip6addr pfra_u._pfra_ip6addr
974
975enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX };
976enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX };
977#define PFR_OP_XPASS PFR_OP_ADDR_MAX
978
979struct pfr_astats {
980 struct pfr_addr pfras_a;
981 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
982 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
983 long pfras_tzero;
984};
985
986enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX };
987
988struct pfr_tstats {
989 struct pfr_table pfrts_t;
990 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
991 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
992 u_int64_t pfrts_match;
993 u_int64_t pfrts_nomatch;
994 long pfrts_tzero;
995 int pfrts_cnt;
996 int pfrts_refcnt[PFR_REFCNT_MAX];
997};
998#define pfrts_name pfrts_t.pfrt_name
999#define pfrts_flags pfrts_t.pfrt_flags
1000
1001#ifndef _SOCKADDR_UNION_DEFINED
1002#define _SOCKADDR_UNION_DEFINED
1003union sockaddr_union {
1004 struct sockaddr sa;
1005 struct sockaddr_in sin;
1006 struct sockaddr_in6 sin6;
1007};
1008#endif /* _SOCKADDR_UNION_DEFINED */
1009
1010struct pfr_kcounters {
1011 u_int64_t pfrkc_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
1012 u_int64_t pfrkc_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
1013};
1014
1015SLIST_HEAD(pfr_kentryworkq, pfr_kentry);
1016struct pfr_kentry {
1017 struct radix_node pfrke_node[2];
1018 union sockaddr_union pfrke_sa;
1019 SLIST_ENTRY(pfr_kentry) pfrke_workq;
1020 struct pfr_kcounters *pfrke_counters;
1021 long pfrke_tzero;
1022 u_int8_t pfrke_af;
1023 u_int8_t pfrke_net;
1024 u_int8_t pfrke_not;
1025 u_int8_t pfrke_mark;
1026};
1027
1028SLIST_HEAD(pfr_ktableworkq, pfr_ktable);
1029RB_HEAD(pfr_ktablehead, pfr_ktable);
1030struct pfr_ktable {
1031 struct pfr_tstats pfrkt_ts;
1032 RB_ENTRY(pfr_ktable) pfrkt_tree;
1033 SLIST_ENTRY(pfr_ktable) pfrkt_workq;
1034 struct radix_node_head *pfrkt_ip4;
1035 struct radix_node_head *pfrkt_ip6;
1036 struct pfr_ktable *pfrkt_shadow;
1037 struct pfr_ktable *pfrkt_root;
1038 struct pf_ruleset *pfrkt_rs;
1039 long pfrkt_larg;
1040 int pfrkt_nflags;
1041};
1042#define pfrkt_t pfrkt_ts.pfrts_t
1043#define pfrkt_name pfrkt_t.pfrt_name
1044#define pfrkt_anchor pfrkt_t.pfrt_anchor
1045#define pfrkt_ruleset pfrkt_t.pfrt_ruleset
1046#define pfrkt_flags pfrkt_t.pfrt_flags
1047#define pfrkt_cnt pfrkt_ts.pfrts_cnt
1048#define pfrkt_refcnt pfrkt_ts.pfrts_refcnt
1049#define pfrkt_packets pfrkt_ts.pfrts_packets
1050#define pfrkt_bytes pfrkt_ts.pfrts_bytes
1051#define pfrkt_match pfrkt_ts.pfrts_match
1052#define pfrkt_nomatch pfrkt_ts.pfrts_nomatch
1053#define pfrkt_tzero pfrkt_ts.pfrts_tzero
1054
1055/* keep synced with pfi_kif, used in RB_FIND */
1056struct pfi_kif_cmp {
1057 char pfik_name[IFNAMSIZ];
1058};
1059
1060struct pfi_kif {
1061 char pfik_name[IFNAMSIZ];
1062 union {
1063 RB_ENTRY(pfi_kif) _pfik_tree;
1064 LIST_ENTRY(pfi_kif) _pfik_list;
1065 } _pfik_glue;
1066#define pfik_tree _pfik_glue._pfik_tree
1067#define pfik_list _pfik_glue._pfik_list
1068 u_int64_t pfik_packets[2][2][2];
1069 u_int64_t pfik_bytes[2][2][2];
1070 u_int32_t pfik_tzero;
1071 u_int pfik_flags;
1072 struct ifnet *pfik_ifp;
1073 struct ifg_group *pfik_group;
1074 u_int pfik_rulerefs;
1075 TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs;
1076};
1077
1078#define PFI_IFLAG_REFS 0x0001 /* has state references */
1079#define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */
1080
1081struct pf_pdesc {
1082 struct {
1083 int done;
1084 uid_t uid;
1085 gid_t gid;
1086 } lookup;
1087 u_int64_t tot_len; /* Make Mickey money */
1088 union {
1089 struct tcphdr *tcp;
1090 struct udphdr *udp;
1091 struct icmp *icmp;
1092#ifdef INET6
1093 struct icmp6_hdr *icmp6;
1094#endif /* INET6 */
1095 void *any;
1096 } hdr;
1097
1098 struct pf_rule *nat_rule; /* nat/rdr rule applied to packet */
1099 struct pf_addr *src; /* src address */
1100 struct pf_addr *dst; /* dst address */
1101 u_int16_t *sport;
1102 u_int16_t *dport;
1103 struct pf_mtag *pf_mtag;
1104
1105 u_int32_t p_len; /* total length of payload */
1106
1107 u_int16_t *ip_sum;
1108 u_int16_t *proto_sum;
1109 u_int16_t flags; /* Let SCRUB trigger behavior in
1110 * state code. Easier than tags */
1111#define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */
1112#define PFDESC_IP_REAS 0x0002 /* IP frags would've been reassembled */
1113 sa_family_t af;
1114 u_int8_t proto;
1115 u_int8_t tos;
1116 u_int8_t dir; /* direction */
1117 u_int8_t sidx; /* key index for source */
1118 u_int8_t didx; /* key index for destination */
1119};
1120
1121/* flags for RDR options */
1122#define PF_DPORT_RANGE 0x01 /* Dest port uses range */
1123#define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */
1124
1125/* UDP state enumeration */
1126#define PFUDPS_NO_TRAFFIC 0
1127#define PFUDPS_SINGLE 1
1128#define PFUDPS_MULTIPLE 2
1129
1130#define PFUDPS_NSTATES 3 /* number of state levels */
1131
1132#define PFUDPS_NAMES { \
1133 "NO_TRAFFIC", \
1134 "SINGLE", \
1135 "MULTIPLE", \
1136 NULL \
1137}
1138
1139/* Other protocol state enumeration */
1140#define PFOTHERS_NO_TRAFFIC 0
1141#define PFOTHERS_SINGLE 1
1142#define PFOTHERS_MULTIPLE 2
1143
1144#define PFOTHERS_NSTATES 3 /* number of state levels */
1145
1146#define PFOTHERS_NAMES { \
1147 "NO_TRAFFIC", \
1148 "SINGLE", \
1149 "MULTIPLE", \
1150 NULL \
1151}
1152
1153#define ACTION_SET(a, x) \
1154 do { \
1155 if ((a) != NULL) \
1156 *(a) = (x); \
1157 } while (0)
1158
1159#define REASON_SET(a, x) \
1160 do { \
1161 if ((a) != NULL) \
1162 *(a) = (x); \
1163 if (x < PFRES_MAX) \
1164 counter_u64_add(V_pf_status.counters[x], 1); \
1165 } while (0)
1166
1167struct pf_kstatus {
1168 counter_u64_t counters[PFRES_MAX]; /* reason for passing/dropping */
1169 counter_u64_t lcounters[LCNT_MAX]; /* limit counters */
1170 counter_u64_t fcounters[FCNT_MAX]; /* state operation counters */
1171 counter_u64_t scounters[SCNT_MAX]; /* src_node operation counters */
1172 uint32_t states;
1173 uint32_t src_nodes;
1174 uint32_t running;
1175 uint32_t since;
1176 uint32_t debug;
1177 uint32_t hostid;
1178 char ifname[IFNAMSIZ];
1179 uint8_t pf_chksum[PF_MD5_DIGEST_LENGTH];
1180};
1181
1182struct pf_divert {
1183 union {
1184 struct in_addr ipv4;
1185 struct in6_addr ipv6;
1186 } addr;
1187 u_int16_t port;
1188};
1189
1190#define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */
1191#define PFR_KENTRY_HIWAT 200000 /* Number of table entries */
1192
1193/*
1194 * ioctl parameter structures
1195 */
1196
1197struct pfioc_pooladdr {
1198 u_int32_t action;
1199 u_int32_t ticket;
1200 u_int32_t nr;
1201 u_int32_t r_num;
1202 u_int8_t r_action;
1203 u_int8_t r_last;
1204 u_int8_t af;
1205 char anchor[MAXPATHLEN];
1206 struct pf_pooladdr addr;
1207};
1208
1209struct pfioc_rule {
1210 u_int32_t action;
1211 u_int32_t ticket;
1212 u_int32_t pool_ticket;
1213 u_int32_t nr;
1214 char anchor[MAXPATHLEN];
1215 char anchor_call[MAXPATHLEN];
1216 struct pf_rule rule;
1217};
1218
1219struct pfioc_natlook {
1220 struct pf_addr saddr;
1221 struct pf_addr daddr;
1222 struct pf_addr rsaddr;
1223 struct pf_addr rdaddr;
1224 u_int16_t sport;
1225 u_int16_t dport;
1226 u_int16_t rsport;
1227 u_int16_t rdport;
1228 sa_family_t af;
1229 u_int8_t proto;
1230 u_int8_t direction;
1231};
1232
1233struct pfioc_state {
1234 struct pfsync_state state;
1235};
1236
1237struct pfioc_src_node_kill {
1238 sa_family_t psnk_af;
1239 struct pf_rule_addr psnk_src;
1240 struct pf_rule_addr psnk_dst;
1241 u_int psnk_killed;
1242};
1243
1244struct pfioc_state_kill {
1245 struct pf_state_cmp psk_pfcmp;
1246 sa_family_t psk_af;
1247 int psk_proto;
1248 struct pf_rule_addr psk_src;
1249 struct pf_rule_addr psk_dst;
1250 char psk_ifname[IFNAMSIZ];
1251 char psk_label[PF_RULE_LABEL_SIZE];
1252 u_int psk_killed;
1253};
1254
1255struct pfioc_states {
1256 int ps_len;
1257 union {
1258 caddr_t psu_buf;
1259 struct pfsync_state *psu_states;
1260 } ps_u;
1261#define ps_buf ps_u.psu_buf
1262#define ps_states ps_u.psu_states
1263};
1264
1265struct pfioc_src_nodes {
1266 int psn_len;
1267 union {
1268 caddr_t psu_buf;
1269 struct pf_src_node *psu_src_nodes;
1270 } psn_u;
1271#define psn_buf psn_u.psu_buf
1272#define psn_src_nodes psn_u.psu_src_nodes
1273};
1274
1275struct pfioc_if {
1276 char ifname[IFNAMSIZ];
1277};
1278
1279struct pfioc_tm {
1280 int timeout;
1281 int seconds;
1282};
1283
1284struct pfioc_limit {
1285 int index;
1286 unsigned limit;
1287};
1288
1289struct pfioc_altq {
1290 u_int32_t action;
1291 u_int32_t ticket;
1292 u_int32_t nr;
1293 struct pf_altq altq;
1294};
1295
1296struct pfioc_qstats {
1297 u_int32_t ticket;
1298 u_int32_t nr;
1299 void *buf;
1300 int nbytes;
1301 u_int8_t scheduler;
1302};
1303
1304struct pfioc_ruleset {
1305 u_int32_t nr;
1306 char path[MAXPATHLEN];
1307 char name[PF_ANCHOR_NAME_SIZE];
1308};
1309
1310#define PF_RULESET_ALTQ (PF_RULESET_MAX)
1311#define PF_RULESET_TABLE (PF_RULESET_MAX+1)
1312struct pfioc_trans {
1313 int size; /* number of elements */
1314 int esize; /* size of each element in bytes */
1315 struct pfioc_trans_e {
1316 int rs_num;
1317 char anchor[MAXPATHLEN];
1318 u_int32_t ticket;
1319 } *array;
1320};
1321
1322#define PFR_FLAG_ATOMIC 0x00000001 /* unused */
1323#define PFR_FLAG_DUMMY 0x00000002
1324#define PFR_FLAG_FEEDBACK 0x00000004
1325#define PFR_FLAG_CLSTATS 0x00000008
1326#define PFR_FLAG_ADDRSTOO 0x00000010
1327#define PFR_FLAG_REPLACE 0x00000020
1328#define PFR_FLAG_ALLRSETS 0x00000040
1329#define PFR_FLAG_ALLMASK 0x0000007F
1330#ifdef _KERNEL
1331#define PFR_FLAG_USERIOCTL 0x10000000
1332#endif
1333
1334struct pfioc_table {
1335 struct pfr_table pfrio_table;
1336 void *pfrio_buffer;
1337 int pfrio_esize;
1338 int pfrio_size;
1339 int pfrio_size2;
1340 int pfrio_nadd;
1341 int pfrio_ndel;
1342 int pfrio_nchange;
1343 int pfrio_flags;
1344 u_int32_t pfrio_ticket;
1345};
1346#define pfrio_exists pfrio_nadd
1347#define pfrio_nzero pfrio_nadd
1348#define pfrio_nmatch pfrio_nadd
1349#define pfrio_naddr pfrio_size2
1350#define pfrio_setflag pfrio_size2
1351#define pfrio_clrflag pfrio_nadd
1352
1353struct pfioc_iface {
1354 char pfiio_name[IFNAMSIZ];
1355 void *pfiio_buffer;
1356 int pfiio_esize;
1357 int pfiio_size;
1358 int pfiio_nzero;
1359 int pfiio_flags;
1360};
1361
1362
1363/*
1364 * ioctl operations
1365 */
1366
1367#define DIOCSTART _IO ('D', 1)
1368#define DIOCSTOP _IO ('D', 2)
1369#define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule)
1370#define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule)
1371#define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule)
1372/* XXX cut 8 - 17 */
1373#define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill)
1374#define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state)
1375#define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if)
1376#define DIOCGETSTATUS _IOWR('D', 21, struct pf_status)
1377#define DIOCCLRSTATUS _IO ('D', 22)
1378#define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook)
1379#define DIOCSETDEBUG _IOWR('D', 24, u_int32_t)
1380#define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states)
1381#define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule)
1382/* XXX cut 26 - 28 */
1383#define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm)
1384#define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm)
1385#define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state)
1386#define DIOCCLRRULECTRS _IO ('D', 38)
1387#define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit)
1388#define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit)
1389#define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill)
1390#define DIOCSTARTALTQ _IO ('D', 42)
1391#define DIOCSTOPALTQ _IO ('D', 43)
1392#define DIOCADDALTQ _IOWR('D', 45, struct pfioc_altq)
1393#define DIOCGETALTQS _IOWR('D', 47, struct pfioc_altq)
1394#define DIOCGETALTQ _IOWR('D', 48, struct pfioc_altq)
1395#define DIOCCHANGEALTQ _IOWR('D', 49, struct pfioc_altq)
1396#define DIOCGETQSTATS _IOWR('D', 50, struct pfioc_qstats)
1397#define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr)
1398#define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr)
1399#define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr)
1400#define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr)
1401#define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr)
1402/* XXX cut 55 - 57 */
1403#define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset)
1404#define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset)
1405#define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table)
1406#define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table)
1407#define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table)
1408#define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table)
1409#define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table)
1410#define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table)
1411#define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table)
1412#define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table)
1413#define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table)
1414#define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table)
1415#define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table)
1416#define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table)
1417#define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table)
1418#define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table)
1419#define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table)
1420#define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table)
1421#define DIOCOSFPFLUSH _IO('D', 78)
1422#define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl)
1423#define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl)
1424#define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans)
1425#define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans)
1426#define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans)
1427#define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes)
1428#define DIOCCLRSRCNODES _IO('D', 85)
1429#define DIOCSETHOSTID _IOWR('D', 86, u_int32_t)
1430#define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface)
1431#define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface)
1432#define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface)
1433#define DIOCKILLSRCNODES _IOWR('D', 91, struct pfioc_src_node_kill)
1434struct pf_ifspeed {
1435 char ifname[IFNAMSIZ];
1436 u_int32_t baudrate;
1437};
1438#define DIOCGIFSPEED _IOWR('D', 92, struct pf_ifspeed)
1439
1440#ifdef _KERNEL
1441LIST_HEAD(pf_src_node_list, pf_src_node);
1442struct pf_srchash {
1443 struct pf_src_node_list nodes;
1444 struct mtx lock;
1445};
1446
1447struct pf_keyhash {
1448 LIST_HEAD(, pf_state_key) keys;
1449 struct mtx lock;
1450};
1451
1452struct pf_idhash {
1453 LIST_HEAD(, pf_state) states;
1454 struct mtx lock;
1455};
1456
1457extern u_long pf_hashmask;
1458extern u_long pf_srchashmask;
1459#define PF_HASHSIZ (32768)
1460VNET_DECLARE(struct pf_keyhash *, pf_keyhash);
1461VNET_DECLARE(struct pf_idhash *, pf_idhash);
1462#define V_pf_keyhash VNET(pf_keyhash)
1463#define V_pf_idhash VNET(pf_idhash)
1464VNET_DECLARE(struct pf_srchash *, pf_srchash);
1465#define V_pf_srchash VNET(pf_srchash)
1466
1467#define PF_IDHASH(s) (be64toh((s)->id) % (pf_hashmask + 1))
1468
1469VNET_DECLARE(void *, pf_swi_cookie);
1470#define V_pf_swi_cookie VNET(pf_swi_cookie)
1471
1472VNET_DECLARE(uint64_t, pf_stateid[MAXCPU]);
1473#define V_pf_stateid VNET(pf_stateid)
1474
1475TAILQ_HEAD(pf_altqqueue, pf_altq);
1476VNET_DECLARE(struct pf_altqqueue, pf_altqs[2]);
1477#define V_pf_altqs VNET(pf_altqs)
1478VNET_DECLARE(struct pf_palist, pf_pabuf);
1479#define V_pf_pabuf VNET(pf_pabuf)
1480
1481VNET_DECLARE(u_int32_t, ticket_altqs_active);
1482#define V_ticket_altqs_active VNET(ticket_altqs_active)
1483VNET_DECLARE(u_int32_t, ticket_altqs_inactive);
1484#define V_ticket_altqs_inactive VNET(ticket_altqs_inactive)
1485VNET_DECLARE(int, altqs_inactive_open);
1486#define V_altqs_inactive_open VNET(altqs_inactive_open)
1487VNET_DECLARE(u_int32_t, ticket_pabuf);
1488#define V_ticket_pabuf VNET(ticket_pabuf)
1489VNET_DECLARE(struct pf_altqqueue *, pf_altqs_active);
1490#define V_pf_altqs_active VNET(pf_altqs_active)
1491VNET_DECLARE(struct pf_altqqueue *, pf_altqs_inactive);
1492#define V_pf_altqs_inactive VNET(pf_altqs_inactive)
1493
1494VNET_DECLARE(struct pf_rulequeue, pf_unlinked_rules);
1495#define V_pf_unlinked_rules VNET(pf_unlinked_rules)
1496
1497void pf_initialize(void);
1498void pf_mtag_initialize(void);
1499void pf_mtag_cleanup(void);
1500void pf_cleanup(void);
1501
1502struct pf_mtag *pf_get_mtag(struct mbuf *);
1503
1504extern void pf_calc_skip_steps(struct pf_rulequeue *);
1505#ifdef ALTQ
1506extern void pf_altq_ifnet_event(struct ifnet *, int);
1507#endif
1508VNET_DECLARE(uma_zone_t, pf_state_z);
1509#define V_pf_state_z VNET(pf_state_z)
1510VNET_DECLARE(uma_zone_t, pf_state_key_z);
1511#define V_pf_state_key_z VNET(pf_state_key_z)
1512VNET_DECLARE(uma_zone_t, pf_state_scrub_z);
1513#define V_pf_state_scrub_z VNET(pf_state_scrub_z)
1514
1515extern void pf_purge_thread(void *);
1516extern void pf_intr(void *);
1517extern void pf_purge_expired_src_nodes(void);
1518
1519extern int pf_unlink_state(struct pf_state *, u_int);
1520#define PF_ENTER_LOCKED 0x00000001
1521#define PF_RETURN_LOCKED 0x00000002
1522extern int pf_state_insert(struct pfi_kif *,
1523 struct pf_state_key *,
1524 struct pf_state_key *,
1525 struct pf_state *);
1526extern void pf_free_state(struct pf_state *);
1527
1528static __inline void
1529pf_ref_state(struct pf_state *s)
1530{
1531
1532 refcount_acquire(&s->refs);
1533}
1534
1535static __inline int
1536pf_release_state(struct pf_state *s)
1537{
1538
1539 if (refcount_release(&s->refs)) {
1540 pf_free_state(s);
1541 return (1);
1542 } else
1543 return (0);
1544}
1545
1546extern struct pf_state *pf_find_state_byid(uint64_t, uint32_t);
1547extern struct pf_state *pf_find_state_all(struct pf_state_key_cmp *,
1548 u_int, int *);
1549extern struct pf_src_node *pf_find_src_node(struct pf_addr *,
1550 struct pf_rule *, sa_family_t, int);
1551extern void pf_unlink_src_node(struct pf_src_node *);
1552extern void pf_unlink_src_node_locked(struct pf_src_node *);
1553extern u_int pf_free_src_nodes(struct pf_src_node_list *);
1554extern void pf_print_state(struct pf_state *);
1555extern void pf_print_flags(u_int8_t);
1556extern u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t,
1557 u_int8_t);
1558
1559VNET_DECLARE(struct ifnet *, sync_ifp);
1560#define V_sync_ifp VNET(sync_ifp);
1561VNET_DECLARE(struct pf_rule, pf_default_rule);
1562#define V_pf_default_rule VNET(pf_default_rule)
1563extern void pf_addrcpy(struct pf_addr *, struct pf_addr *,
1564 u_int8_t);
1565void pf_free_rule(struct pf_rule *);
1566
1567#ifdef INET
1568int pf_test(int, struct ifnet *, struct mbuf **, struct inpcb *);
1569int pf_normalize_ip(struct mbuf **, int, struct pfi_kif *, u_short *,
1570 struct pf_pdesc *);
1571#endif /* INET */
1572
1573#ifdef INET6
1574int pf_test6(int, struct ifnet *, struct mbuf **, struct inpcb *);
1575int pf_normalize_ip6(struct mbuf **, int, struct pfi_kif *, u_short *,
1576 struct pf_pdesc *);
1577void pf_poolmask(struct pf_addr *, struct pf_addr*,
1578 struct pf_addr *, struct pf_addr *, u_int8_t);
1579void pf_addr_inc(struct pf_addr *, sa_family_t);
1580int pf_refragment6(struct ifnet *, struct mbuf **, struct m_tag *);
1581#endif /* INET6 */
1582
1583u_int32_t pf_new_isn(struct pf_state *);
1584void *pf_pull_hdr(struct mbuf *, int, void *, int, u_short *, u_short *,
1585 sa_family_t);
1586void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t);
1587void pf_send_deferred_syn(struct pf_state *);
1588int pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *,
1589 struct pf_addr *, sa_family_t);
1590int pf_match_addr_range(struct pf_addr *, struct pf_addr *,
1591 struct pf_addr *, sa_family_t);
1592int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t);
1593
1594void pf_normalize_init(void);
1595void pf_normalize_cleanup(void);
1596int pf_normalize_tcp(int, struct pfi_kif *, struct mbuf *, int, int, void *,
1597 struct pf_pdesc *);
1598void pf_normalize_tcp_cleanup(struct pf_state *);
1599int pf_normalize_tcp_init(struct mbuf *, int, struct pf_pdesc *,
1600 struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *);
1601int pf_normalize_tcp_stateful(struct mbuf *, int, struct pf_pdesc *,
1602 u_short *, struct tcphdr *, struct pf_state *,
1603 struct pf_state_peer *, struct pf_state_peer *, int *);
1604u_int32_t
1605 pf_state_expires(const struct pf_state *);
1606void pf_purge_expired_fragments(void);
1607int pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kif *,
1608 int);
1609int pf_socket_lookup(int, struct pf_pdesc *, struct mbuf *);
1610struct pf_state_key *pf_alloc_state_key(int);
1611void pfr_initialize(void);
1612void pfr_cleanup(void);
1613int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t);
1614void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t,
1615 u_int64_t, int, int, int);
1616int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, sa_family_t);
1617void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *);
1618struct pfr_ktable *
1619 pfr_attach_table(struct pf_ruleset *, char *);
1620void pfr_detach_table(struct pfr_ktable *);
1621int pfr_clr_tables(struct pfr_table *, int *, int);
1622int pfr_add_tables(struct pfr_table *, int, int *, int);
1623int pfr_del_tables(struct pfr_table *, int, int *, int);
1624int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int);
1625int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int);
1626int pfr_clr_tstats(struct pfr_table *, int, int *, int);
1627int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int);
1628int pfr_clr_addrs(struct pfr_table *, int *, int);
1629int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *, long);
1630int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
1631 int);
1632int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
1633 int);
1634int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
1635 int *, int *, int *, int, u_int32_t);
1636int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int);
1637int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int);
1638int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *,
1639 int);
1640int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
1641 int);
1642int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int);
1643int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int);
1644int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int);
1645int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *,
1646 int *, u_int32_t, int);
1647
1648MALLOC_DECLARE(PFI_MTYPE);
1649VNET_DECLARE(struct pfi_kif *, pfi_all);
1650#define V_pfi_all VNET(pfi_all)
1651
1652void pfi_initialize(void);
1653void pfi_cleanup(void);
1654void pfi_kif_ref(struct pfi_kif *);
1655void pfi_kif_unref(struct pfi_kif *);
1656struct pfi_kif *pfi_kif_find(const char *);
1657struct pfi_kif *pfi_kif_attach(struct pfi_kif *, const char *);
1658int pfi_kif_match(struct pfi_kif *, struct pfi_kif *);
1659void pfi_kif_purge(void);
1660int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *,
1661 sa_family_t);
1662int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t);
1663void pfi_dynaddr_remove(struct pfi_dynaddr *);
1664void pfi_dynaddr_copyout(struct pf_addr_wrap *);
1665void pfi_update_status(const char *, struct pf_status *);
1666void pfi_get_ifaces(const char *, struct pfi_kif *, int *);
1667int pfi_set_flags(const char *, int);
1668int pfi_clear_flags(const char *, int);
1669
1670int pf_match_tag(struct mbuf *, struct pf_rule *, int *, int);
1671int pf_tag_packet(struct mbuf *, struct pf_pdesc *, int);
1672int pf_addr_cmp(struct pf_addr *, struct pf_addr *,
1673 sa_family_t);
1674void pf_qid2qname(u_int32_t, char *);
1675
1676VNET_DECLARE(struct pf_kstatus, pf_status);
1677#define V_pf_status VNET(pf_status)
1678
1679struct pf_limit {
1680 uma_zone_t zone;
1681 u_int limit;
1682};
1683VNET_DECLARE(struct pf_limit, pf_limits[PF_LIMIT_MAX]);
1684#define V_pf_limits VNET(pf_limits)
1685
1686#endif /* _KERNEL */
1687
1688#ifdef _KERNEL
1689VNET_DECLARE(struct pf_anchor_global, pf_anchors);
1690#define V_pf_anchors VNET(pf_anchors)
1691VNET_DECLARE(struct pf_anchor, pf_main_anchor);
1692#define V_pf_main_anchor VNET(pf_main_anchor)
1693#define pf_main_ruleset V_pf_main_anchor.ruleset
1694#endif
1695
1696/* these ruleset functions can be linked into userland programs (pfctl) */
1697int pf_get_ruleset_number(u_int8_t);
1698void pf_init_ruleset(struct pf_ruleset *);
1699int pf_anchor_setup(struct pf_rule *,
1700 const struct pf_ruleset *, const char *);
1701int pf_anchor_copyout(const struct pf_ruleset *,
1702 const struct pf_rule *, struct pfioc_rule *);
1703void pf_anchor_remove(struct pf_rule *);
1704void pf_remove_if_empty_ruleset(struct pf_ruleset *);
1705struct pf_ruleset *pf_find_ruleset(const char *);
1706struct pf_ruleset *pf_find_or_create_ruleset(const char *);
1707void pf_rs_initialize(void);
1708
1709/* The fingerprint functions can be linked into userland programs (tcpdump) */
1710int pf_osfp_add(struct pf_osfp_ioctl *);
1711#ifdef _KERNEL
1712struct pf_osfp_enlist *
1713 pf_osfp_fingerprint(struct pf_pdesc *, struct mbuf *, int,
1714 const struct tcphdr *);
1715#endif /* _KERNEL */
1716void pf_osfp_flush(void);
1717int pf_osfp_get(struct pf_osfp_ioctl *);
1718int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t);
1719
1720#ifdef _KERNEL
1721void pf_print_host(struct pf_addr *, u_int16_t, u_int8_t);
1722
1723void pf_step_into_anchor(struct pf_anchor_stackframe *, int *,
1724 struct pf_ruleset **, int, struct pf_rule **,
1725 struct pf_rule **, int *);
1726int pf_step_out_of_anchor(struct pf_anchor_stackframe *, int *,
1727 struct pf_ruleset **, int, struct pf_rule **,
1728 struct pf_rule **, int *);
1729
1730int pf_map_addr(u_int8_t, struct pf_rule *,
1731 struct pf_addr *, struct pf_addr *,
1732 struct pf_addr *, struct pf_src_node **);
1733struct pf_rule *pf_get_translation(struct pf_pdesc *, struct mbuf *,
1734 int, int, struct pfi_kif *, struct pf_src_node **,
1735 struct pf_state_key **, struct pf_state_key **,
1736 struct pf_addr *, struct pf_addr *,
1737 uint16_t, uint16_t, struct pf_anchor_stackframe *);
1738
1739struct pf_state_key *pf_state_key_setup(struct pf_pdesc *, struct pf_addr *,
1740 struct pf_addr *, u_int16_t, u_int16_t);
1741struct pf_state_key *pf_state_key_clone(struct pf_state_key *);
1742#endif /* _KERNEL */
1743
1744#endif /* _NET_PFVAR_H_ */