1/* $NetBSD: pfvar.h,v 1.23 2020/03/05 07:46:36 riastradh Exp $ */
2/* $OpenBSD: pfvar.h,v 1.254 2007/07/13 09:17:48 markus Exp $ */
3
4/*
5 * Copyright (c) 2001 Daniel Hartmeier
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * - Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * - Redistributions in binary form must reproduce the above
15 * copyright notice, this list of conditions and the following
16 * disclaimer in the documentation and/or other materials provided
17 * with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
22 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
23 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
25 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
26 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
27 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
29 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 *
32 */
33
34#ifndef _NET_PFVAR_H_
35#define _NET_PFVAR_H_
36
37#ifdef _KERNEL_OPT
38#include "opt_inet.h"
39#endif
40
41#include <sys/param.h>
42#include <sys/types.h>
43#include <sys/queue.h>
44#include <sys/tree.h>
45#include <sys/rwlock.h>
46
47#include <net/radix.h>
48#ifndef __NetBSD__
49#include <net/route.h>
50#include <netinet/ip_ipsp.h>
51#else
52/* files above include netinet/in.h so include it too for compatibility */
53#include <netinet/in.h>
54#endif /* __NetBSD__ */
55#include <netinet/tcp_fsm.h>
56
57#if defined(__NetBSD__) && defined(_KERNEL)
58#include <net/if_compat.h>
59#include <net/pf_mtag.h>
60#endif /* __NetBSD__ && _KERNEL */
61
62struct ip;
63struct ip6_hdr;
64
65#define PF_TCPS_PROXY_SRC ((TCP_NSTATES)+0)
66#define PF_TCPS_PROXY_DST ((TCP_NSTATES)+1)
67
68#define PF_MD5_DIGEST_LENGTH 16
69#ifdef MD5_DIGEST_LENGTH
70#if PF_MD5_DIGEST_LENGTH != MD5_DIGEST_LENGTH
71#error
72#endif
73#endif
74
75enum { PF_INOUT, PF_IN, PF_OUT };
76enum { PF_LAN_EXT, PF_EXT_GWY, PF_ID };
77enum { PF_PASS, PF_DROP, PF_SCRUB, PF_NOSCRUB, PF_NAT, PF_NONAT,
78 PF_BINAT, PF_NOBINAT, PF_RDR, PF_NORDR, PF_SYNPROXY_DROP };
79enum { PF_RULESET_SCRUB, PF_RULESET_FILTER, PF_RULESET_NAT,
80 PF_RULESET_BINAT, PF_RULESET_RDR, PF_RULESET_MAX };
81enum { PF_OP_NONE, PF_OP_IRG, PF_OP_EQ, PF_OP_NE, PF_OP_LT,
82 PF_OP_LE, PF_OP_GT, PF_OP_GE, PF_OP_XRG, PF_OP_RRG };
83enum { PF_DEBUG_NONE, PF_DEBUG_URGENT, PF_DEBUG_MISC, PF_DEBUG_NOISY };
84enum { PF_CHANGE_NONE, PF_CHANGE_ADD_HEAD, PF_CHANGE_ADD_TAIL,
85 PF_CHANGE_ADD_BEFORE, PF_CHANGE_ADD_AFTER,
86 PF_CHANGE_REMOVE, PF_CHANGE_GET_TICKET };
87enum { PF_GET_NONE, PF_GET_CLR_CNTR };
88
89/*
90 * Note about PFTM_*: real indices into pf_rule.timeout[] come before
91 * PFTM_MAX, special cases afterwards. See pf_state_expires().
92 */
93enum { PFTM_TCP_FIRST_PACKET, PFTM_TCP_OPENING, PFTM_TCP_ESTABLISHED,
94 PFTM_TCP_CLOSING, PFTM_TCP_FIN_WAIT, PFTM_TCP_CLOSED,
95 PFTM_UDP_FIRST_PACKET, PFTM_UDP_SINGLE, PFTM_UDP_MULTIPLE,
96 PFTM_ICMP_FIRST_PACKET, PFTM_ICMP_ERROR_REPLY,
97 PFTM_OTHER_FIRST_PACKET, PFTM_OTHER_SINGLE,
98 PFTM_OTHER_MULTIPLE, PFTM_FRAG, PFTM_INTERVAL,
99 PFTM_ADAPTIVE_START, PFTM_ADAPTIVE_END, PFTM_SRC_NODE,
100 PFTM_TS_DIFF, PFTM_MAX, PFTM_PURGE, PFTM_UNLINKED,
101 PFTM_UNTIL_PACKET };
102
103/* PFTM default values */
104#define PFTM_TCP_FIRST_PACKET_VAL 120 /* First TCP packet */
105#define PFTM_TCP_OPENING_VAL 30 /* No response yet */
106#define PFTM_TCP_ESTABLISHED_VAL 24*60*60/* Established */
107#define PFTM_TCP_CLOSING_VAL 15 * 60 /* Half closed */
108#define PFTM_TCP_FIN_WAIT_VAL 45 /* Got both FINs */
109#define PFTM_TCP_CLOSED_VAL 90 /* Got a RST */
110#define PFTM_UDP_FIRST_PACKET_VAL 60 /* First UDP packet */
111#define PFTM_UDP_SINGLE_VAL 30 /* Unidirectional */
112#define PFTM_UDP_MULTIPLE_VAL 60 /* Bidirectional */
113#define PFTM_ICMP_FIRST_PACKET_VAL 20 /* First ICMP packet */
114#define PFTM_ICMP_ERROR_REPLY_VAL 10 /* Got error response */
115#define PFTM_OTHER_FIRST_PACKET_VAL 60 /* First packet */
116#define PFTM_OTHER_SINGLE_VAL 30 /* Unidirectional */
117#define PFTM_OTHER_MULTIPLE_VAL 60 /* Bidirectional */
118#define PFTM_FRAG_VAL 30 /* Fragment expire */
119#define PFTM_INTERVAL_VAL 10 /* Expire interval */
120#define PFTM_SRC_NODE_VAL 0 /* Source tracking */
121#define PFTM_TS_DIFF_VAL 30 /* Allowed TS diff */
122
123enum { PF_NOPFROUTE, PF_FASTROUTE, PF_ROUTETO, PF_DUPTO, PF_REPLYTO };
124enum { PF_LIMIT_STATES, PF_LIMIT_SRC_NODES, PF_LIMIT_FRAGS,
125 PF_LIMIT_TABLES, PF_LIMIT_TABLE_ENTRIES, PF_LIMIT_MAX };
126#define PF_POOL_IDMASK 0x0f
127enum { PF_POOL_NONE, PF_POOL_BITMASK, PF_POOL_RANDOM,
128 PF_POOL_SRCHASH, PF_POOL_ROUNDROBIN };
129enum { PF_ADDR_ADDRMASK, PF_ADDR_NOROUTE, PF_ADDR_DYNIFTL,
130 PF_ADDR_TABLE, PF_ADDR_RTLABEL, PF_ADDR_URPFFAILED };
131#define PF_POOL_TYPEMASK 0x0f
132#define PF_POOL_STICKYADDR 0x20
133#define PF_WSCALE_FLAG 0x80
134#define PF_WSCALE_MASK 0x0f
135
136#define PF_LOG 0x01
137#define PF_LOG_ALL 0x02
138#define PF_LOG_SOCKET_LOOKUP 0x04
139
140struct pf_addr {
141 union {
142 struct in_addr v4;
143 struct in6_addr v6;
144 u_int8_t addr8[16];
145 u_int16_t addr16[8];
146 u_int32_t addr32[4];
147 } pfa; /* 128-bit address */
148#define v4 pfa.v4
149#define v6 pfa.v6
150#define addr8 pfa.addr8
151#define addr16 pfa.addr16
152#define addr32 pfa.addr32
153};
154
155#define PF_TABLE_NAME_SIZE 32
156
157#define PFI_AFLAG_NETWORK 0x01
158#define PFI_AFLAG_BROADCAST 0x02
159#define PFI_AFLAG_PEER 0x04
160#define PFI_AFLAG_MODEMASK 0x07
161#define PFI_AFLAG_NOALIAS 0x08
162
163#ifndef RTLABEL_LEN
164#define RTLABEL_LEN 32
165#endif
166
167struct pf_addr_wrap {
168 union {
169 struct {
170 struct pf_addr addr;
171 struct pf_addr mask;
172 } a;
173 char ifname[IFNAMSIZ];
174 char tblname[PF_TABLE_NAME_SIZE];
175 char rtlabelname[RTLABEL_LEN];
176 u_int32_t rtlabel;
177 } v;
178 union {
179 struct pfi_dynaddr *dyn;
180 struct pfr_ktable *tbl;
181 int dyncnt;
182 int tblcnt;
183 } p;
184 u_int8_t type; /* PF_ADDR_* */
185 u_int8_t iflags; /* PFI_AFLAG_* */
186};
187
188#ifdef _KERNEL
189
190struct pfi_dynaddr {
191 TAILQ_ENTRY(pfi_dynaddr) entry;
192 struct pf_addr pfid_addr4;
193 struct pf_addr pfid_mask4;
194 struct pf_addr pfid_addr6;
195 struct pf_addr pfid_mask6;
196 struct pfr_ktable *pfid_kt;
197 struct pfi_kif *pfid_kif;
198 void *pfid_hook_cookie;
199 int pfid_net; /* mask or 128 */
200 int pfid_acnt4; /* address count IPv4 */
201 int pfid_acnt6; /* address count IPv6 */
202 sa_family_t pfid_af; /* rule af */
203 u_int8_t pfid_iflags; /* PFI_AFLAG_* */
204};
205
206/*
207 * Address manipulation macros
208 */
209
210#ifdef INET
211#ifndef INET6
212#define PF_INET_ONLY
213#endif /* ! INET6 */
214#endif /* INET */
215
216#ifdef INET6
217#ifndef INET
218#define PF_INET6_ONLY
219#endif /* ! INET */
220#endif /* INET6 */
221
222#ifdef INET
223#ifdef INET6
224#define PF_INET_INET6
225#endif /* INET6 */
226#endif /* INET */
227
228#else
229
230#define PF_INET_INET6
231
232#endif /* _KERNEL */
233
234/* Both IPv4 and IPv6 */
235#ifdef PF_INET_INET6
236
237#define PF_AEQ(a, b, c) \
238 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \
239 ((a)->addr32[3] == (b)->addr32[3] && \
240 (a)->addr32[2] == (b)->addr32[2] && \
241 (a)->addr32[1] == (b)->addr32[1] && \
242 (a)->addr32[0] == (b)->addr32[0])) \
243
244#define PF_ANEQ(a, b, c) \
245 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \
246 ((a)->addr32[3] != (b)->addr32[3] || \
247 (a)->addr32[2] != (b)->addr32[2] || \
248 (a)->addr32[1] != (b)->addr32[1] || \
249 (a)->addr32[0] != (b)->addr32[0])) \
250
251#define PF_AZERO(a, c) \
252 ((c == AF_INET && !(a)->addr32[0]) || \
253 (!(a)->addr32[0] && !(a)->addr32[1] && \
254 !(a)->addr32[2] && !(a)->addr32[3] )) \
255
256#define PF_MATCHA(n, a, m, b, f) \
257 pf_match_addr(n, a, m, b, f)
258
259#define PF_ACPY(a, b, f) \
260 pf_addrcpy(a, b, f)
261
262#define PF_AINC(a, f) \
263 pf_addr_inc(a, f)
264
265#define PF_POOLMASK(a, b, c, d, f) \
266 pf_poolmask(a, b, c, d, f)
267
268#else
269
270/* Just IPv6 */
271
272#ifdef PF_INET6_ONLY
273
274#define PF_AEQ(a, b, c) \
275 ((a)->addr32[3] == (b)->addr32[3] && \
276 (a)->addr32[2] == (b)->addr32[2] && \
277 (a)->addr32[1] == (b)->addr32[1] && \
278 (a)->addr32[0] == (b)->addr32[0]) \
279
280#define PF_ANEQ(a, b, c) \
281 ((a)->addr32[3] != (b)->addr32[3] || \
282 (a)->addr32[2] != (b)->addr32[2] || \
283 (a)->addr32[1] != (b)->addr32[1] || \
284 (a)->addr32[0] != (b)->addr32[0]) \
285
286#define PF_AZERO(a, c) \
287 (!(a)->addr32[0] && \
288 !(a)->addr32[1] && \
289 !(a)->addr32[2] && \
290 !(a)->addr32[3] ) \
291
292#define PF_MATCHA(n, a, m, b, f) \
293 pf_match_addr(n, a, m, b, f)
294
295#define PF_ACPY(a, b, f) \
296 pf_addrcpy(a, b, f)
297
298#define PF_AINC(a, f) \
299 pf_addr_inc(a, f)
300
301#define PF_POOLMASK(a, b, c, d, f) \
302 pf_poolmask(a, b, c, d, f)
303
304#else
305
306/* Just IPv4 */
307#ifdef PF_INET_ONLY
308
309#define PF_AEQ(a, b, c) \
310 ((a)->addr32[0] == (b)->addr32[0])
311
312#define PF_ANEQ(a, b, c) \
313 ((a)->addr32[0] != (b)->addr32[0])
314
315#define PF_AZERO(a, c) \
316 (!(a)->addr32[0])
317
318#define PF_MATCHA(n, a, m, b, f) \
319 pf_match_addr(n, a, m, b, f)
320
321#define PF_ACPY(a, b, f) \
322 (a)->v4.s_addr = (b)->v4.s_addr
323
324#define PF_AINC(a, f) \
325 do { \
326 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \
327 } while (0)
328
329#define PF_POOLMASK(a, b, c, d, f) \
330 do { \
331 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \
332 (((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \
333 } while (0)
334
335#endif /* PF_INET_ONLY */
336#endif /* PF_INET6_ONLY */
337#endif /* PF_INET_INET6 */
338
339#define PF_MISMATCHAW(aw, x, af, neg, ifp) \
340 ( \
341 (((aw)->type == PF_ADDR_NOROUTE && \
342 pf_routable((x), (af), NULL)) || \
343 (((aw)->type == PF_ADDR_URPFFAILED && (ifp) != NULL && \
344 pf_routable((x), (af), (ifp))) || \
345 ((aw)->type == PF_ADDR_RTLABEL && \
346 !pf_rtlabel_match((x), (af), (aw))) || \
347 ((aw)->type == PF_ADDR_TABLE && \
348 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \
349 ((aw)->type == PF_ADDR_DYNIFTL && \
350 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \
351 ((aw)->type == PF_ADDR_ADDRMASK && \
352 !PF_AZERO(&(aw)->v.a.mask, (af)) && \
353 !PF_MATCHA(0, &(aw)->v.a.addr, \
354 &(aw)->v.a.mask, (x), (af))))) != \
355 (neg) \
356 )
357
358
359struct pf_rule_uid {
360 uid_t uid[2];
361 u_int8_t op;
362};
363
364struct pf_rule_gid {
365 uid_t gid[2];
366 u_int8_t op;
367};
368
369struct pf_rule_addr {
370 struct pf_addr_wrap addr;
371 u_int16_t port[2];
372 u_int8_t neg;
373 u_int8_t port_op;
374};
375
376struct pf_pooladdr {
377 struct pf_addr_wrap addr;
378 TAILQ_ENTRY(pf_pooladdr) entries;
379 char ifname[IFNAMSIZ];
380 struct pfi_kif *kif;
381};
382
383TAILQ_HEAD(pf_palist, pf_pooladdr);
384
385struct pf_poolhashkey {
386 union {
387 u_int8_t key8[16];
388 u_int16_t key16[8];
389 u_int32_t key32[4];
390 } pfk; /* 128-bit hash key */
391#define key8 pfk.key8
392#define key16 pfk.key16
393#define key32 pfk.key32
394};
395
396struct pf_pool {
397 struct pf_palist list;
398 struct pf_pooladdr *cur;
399 struct pf_poolhashkey key;
400 struct pf_addr counter;
401 int tblidx;
402 u_int16_t proxy_port[2];
403 u_int8_t port_op;
404 u_int8_t opts;
405};
406
407
408/* A packed Operating System description for fingerprinting */
409typedef u_int32_t pf_osfp_t;
410#define PF_OSFP_ANY ((pf_osfp_t)0)
411#define PF_OSFP_UNKNOWN ((pf_osfp_t)-1)
412#define PF_OSFP_NOMATCH ((pf_osfp_t)-2)
413
414struct pf_osfp_entry {
415 SLIST_ENTRY(pf_osfp_entry) fp_entry;
416 pf_osfp_t fp_os;
417 int fp_enflags;
418#define PF_OSFP_EXPANDED 0x001 /* expanded entry */
419#define PF_OSFP_GENERIC 0x002 /* generic signature */
420#define PF_OSFP_NODETAIL 0x004 /* no p0f details */
421#define PF_OSFP_LEN 32
422 char fp_class_nm[PF_OSFP_LEN];
423 char fp_version_nm[PF_OSFP_LEN];
424 char fp_subtype_nm[PF_OSFP_LEN];
425};
426#define PF_OSFP_ENTRY_EQ(a, b) \
427 ((a)->fp_os == (b)->fp_os && \
428 memcmp((a)->fp_class_nm, (b)->fp_class_nm, PF_OSFP_LEN) == 0 && \
429 memcmp((a)->fp_version_nm, (b)->fp_version_nm, PF_OSFP_LEN) == 0 && \
430 memcmp((a)->fp_subtype_nm, (b)->fp_subtype_nm, PF_OSFP_LEN) == 0)
431
432/* handle pf_osfp_t packing */
433#define _FP_RESERVED_BIT 1 /* For the special negative #defines */
434#define _FP_UNUSED_BITS 1
435#define _FP_CLASS_BITS 10 /* OS Class (Windows, Linux) */
436#define _FP_VERSION_BITS 10 /* OS version (95, 98, NT, 2.4.54, 3.2) */
437#define _FP_SUBTYPE_BITS 10 /* patch level (NT SP4, SP3, ECN patch) */
438#define PF_OSFP_UNPACK(osfp, class, version, subtype) do { \
439 (class) = ((osfp) >> (_FP_VERSION_BITS+_FP_SUBTYPE_BITS)) & \
440 ((1 << _FP_CLASS_BITS) - 1); \
441 (version) = ((osfp) >> _FP_SUBTYPE_BITS) & \
442 ((1 << _FP_VERSION_BITS) - 1);\
443 (subtype) = (osfp) & ((1 << _FP_SUBTYPE_BITS) - 1); \
444} while(0)
445#define PF_OSFP_PACK(osfp, class, version, subtype) do { \
446 (osfp) = ((class) & ((1 << _FP_CLASS_BITS) - 1)) << (_FP_VERSION_BITS \
447 + _FP_SUBTYPE_BITS); \
448 (osfp) |= ((version) & ((1 << _FP_VERSION_BITS) - 1)) << \
449 _FP_SUBTYPE_BITS; \
450 (osfp) |= (subtype) & ((1 << _FP_SUBTYPE_BITS) - 1); \
451} while(0)
452
453/* the fingerprint of an OSes TCP SYN packet */
454typedef u_int64_t pf_tcpopts_t;
455struct pf_os_fingerprint {
456 SLIST_HEAD(pf_osfp_enlist, pf_osfp_entry) fp_oses; /* list of matches */
457 pf_tcpopts_t fp_tcpopts; /* packed TCP options */
458 u_int16_t fp_wsize; /* TCP window size */
459 u_int16_t fp_psize; /* ip->ip_len */
460 u_int16_t fp_mss; /* TCP MSS */
461 u_int16_t fp_flags;
462#define PF_OSFP_WSIZE_MOD 0x0001 /* Window modulus */
463#define PF_OSFP_WSIZE_DC 0x0002 /* Window don't care */
464#define PF_OSFP_WSIZE_MSS 0x0004 /* Window multiple of MSS */
465#define PF_OSFP_WSIZE_MTU 0x0008 /* Window multiple of MTU */
466#define PF_OSFP_PSIZE_MOD 0x0010 /* packet size modulus */
467#define PF_OSFP_PSIZE_DC 0x0020 /* packet size don't care */
468#define PF_OSFP_WSCALE 0x0040 /* TCP window scaling */
469#define PF_OSFP_WSCALE_MOD 0x0080 /* TCP window scale modulus */
470#define PF_OSFP_WSCALE_DC 0x0100 /* TCP window scale dont-care */
471#define PF_OSFP_MSS 0x0200 /* TCP MSS */
472#define PF_OSFP_MSS_MOD 0x0400 /* TCP MSS modulus */
473#define PF_OSFP_MSS_DC 0x0800 /* TCP MSS dont-care */
474#define PF_OSFP_DF 0x1000 /* IPv4 don't fragment bit */
475#define PF_OSFP_TS0 0x2000 /* Zero timestamp */
476#define PF_OSFP_INET6 0x4000 /* IPv6 */
477 u_int8_t fp_optcnt; /* TCP option count */
478 u_int8_t fp_wscale; /* TCP window scaling */
479 u_int8_t fp_ttl; /* IPv4 TTL */
480#define PF_OSFP_MAXTTL_OFFSET 40
481/* TCP options packing */
482#define PF_OSFP_TCPOPT_NOP 0x0 /* TCP NOP option */
483#define PF_OSFP_TCPOPT_WSCALE 0x1 /* TCP window scaling option */
484#define PF_OSFP_TCPOPT_MSS 0x2 /* TCP max segment size opt */
485#define PF_OSFP_TCPOPT_SACK 0x3 /* TCP SACK OK option */
486#define PF_OSFP_TCPOPT_TS 0x4 /* TCP timestamp option */
487#define PF_OSFP_TCPOPT_BITS 3 /* bits used by each option */
488#define PF_OSFP_MAX_OPTS \
489 (sizeof(((struct pf_os_fingerprint *)0)->fp_tcpopts) * 8) \
490 / PF_OSFP_TCPOPT_BITS
491
492 SLIST_ENTRY(pf_os_fingerprint) fp_next;
493};
494
495struct pf_osfp_ioctl {
496 struct pf_osfp_entry fp_os;
497 pf_tcpopts_t fp_tcpopts; /* packed TCP options */
498 u_int16_t fp_wsize; /* TCP window size */
499 u_int16_t fp_psize; /* ip->ip_len */
500 u_int16_t fp_mss; /* TCP MSS */
501 u_int16_t fp_flags;
502 u_int8_t fp_optcnt; /* TCP option count */
503 u_int8_t fp_wscale; /* TCP window scaling */
504 u_int8_t fp_ttl; /* IPv4 TTL */
505
506 int fp_getnum; /* DIOCOSFPGET number */
507};
508
509
510union pf_rule_ptr {
511 struct pf_rule *ptr;
512 u_int32_t nr;
513};
514
515#define PF_ANCHOR_NAME_SIZE 64
516
517struct pf_rule {
518 struct pf_rule_addr src;
519 struct pf_rule_addr dst;
520#define PF_SKIP_IFP 0
521#define PF_SKIP_DIR 1
522#define PF_SKIP_AF 2
523#define PF_SKIP_PROTO 3
524#define PF_SKIP_SRC_ADDR 4
525#define PF_SKIP_SRC_PORT 5
526#define PF_SKIP_DST_ADDR 6
527#define PF_SKIP_DST_PORT 7
528#define PF_SKIP_COUNT 8
529 union pf_rule_ptr skip[PF_SKIP_COUNT];
530#define PF_RULE_LABEL_SIZE 64
531 char label[PF_RULE_LABEL_SIZE];
532#define PF_QNAME_SIZE 64
533 char ifname[IFNAMSIZ];
534 char qname[PF_QNAME_SIZE];
535 char pqname[PF_QNAME_SIZE];
536#define PF_TAG_NAME_SIZE 64
537 char tagname[PF_TAG_NAME_SIZE];
538 char match_tagname[PF_TAG_NAME_SIZE];
539
540 char overload_tblname[PF_TABLE_NAME_SIZE];
541
542 TAILQ_ENTRY(pf_rule) entries;
543 struct pf_pool rpool;
544
545 u_int64_t evaluations;
546 u_int64_t packets[2];
547 u_int64_t bytes[2];
548
549 struct pfi_kif *kif;
550 struct pf_anchor *anchor;
551 struct pfr_ktable *overload_tbl;
552
553 pf_osfp_t os_fingerprint;
554
555 int rtableid;
556 u_int32_t timeout[PFTM_MAX];
557 u_int32_t states;
558 u_int32_t max_states;
559 u_int32_t src_nodes;
560 u_int32_t max_src_nodes;
561 u_int32_t max_src_states;
562 u_int32_t max_src_conn;
563 struct {
564 u_int32_t limit;
565 u_int32_t seconds;
566 } max_src_conn_rate;
567 u_int32_t qid;
568 u_int32_t pqid;
569 u_int32_t rt_listid;
570 u_int32_t nr;
571 u_int32_t prob;
572 uid_t cuid;
573 pid_t cpid;
574
575 u_int16_t return_icmp;
576 u_int16_t return_icmp6;
577 u_int16_t max_mss;
578 u_int16_t tag;
579 u_int16_t match_tag;
580
581 struct pf_rule_uid uid;
582 struct pf_rule_gid gid;
583
584 u_int32_t rule_flag;
585 u_int8_t action;
586 u_int8_t direction;
587 u_int8_t log;
588 u_int8_t logif;
589 u_int8_t quick;
590 u_int8_t ifnot;
591 u_int8_t match_tag_not;
592 u_int8_t natpass;
593
594#define PF_STATE_NORMAL 0x1
595#define PF_STATE_MODULATE 0x2
596#define PF_STATE_SYNPROXY 0x3
597 u_int8_t keep_state;
598 sa_family_t af;
599 u_int8_t proto;
600 u_int8_t type;
601 u_int8_t code;
602 u_int8_t flags;
603 u_int8_t flagset;
604 u_int8_t min_ttl;
605 u_int8_t allow_opts;
606 u_int8_t rt;
607 u_int8_t return_ttl;
608 u_int8_t tos;
609 u_int8_t anchor_relative;
610 u_int8_t anchor_wildcard;
611
612#define PF_FLUSH 0x01
613#define PF_FLUSH_GLOBAL 0x02
614 u_int8_t flush;
615};
616
617/* rule flags */
618#define PFRULE_DROP 0x0000
619#define PFRULE_RETURNRST 0x0001
620#define PFRULE_FRAGMENT 0x0002
621#define PFRULE_RETURNICMP 0x0004
622#define PFRULE_RETURN 0x0008
623#define PFRULE_NOSYNC 0x0010
624#define PFRULE_SRCTRACK 0x0020 /* track source states */
625#define PFRULE_RULESRCTRACK 0x0040 /* per rule */
626
627/* scrub flags */
628#define PFRULE_NODF 0x0100
629#define PFRULE_FRAGCROP 0x0200 /* non-buffering frag cache */
630#define PFRULE_FRAGDROP 0x0400 /* drop funny fragments */
631#define PFRULE_RANDOMID 0x0800
632#define PFRULE_REASSEMBLE_TCP 0x1000
633
634/* rule flags again */
635#define PFRULE_IFBOUND 0x00010000 /* if-bound */
636
637#define PFSTATE_HIWAT 10000 /* default state table size */
638#define PFSTATE_ADAPT_START 6000 /* default adaptive timeout start */
639#define PFSTATE_ADAPT_END 12000 /* default adaptive timeout end */
640
641
642struct pf_threshold {
643 u_int32_t limit;
644#define PF_THRESHOLD_MULT 1000
645#define PF_THRESHOLD_MAX 0xffffffff / PF_THRESHOLD_MULT
646 u_int32_t seconds;
647 u_int32_t count;
648 u_int32_t last;
649};
650
651struct pf_src_node {
652 RB_ENTRY(pf_src_node) entry;
653 struct pf_addr addr;
654 struct pf_addr raddr;
655 union pf_rule_ptr rule;
656 struct pfi_kif *kif;
657 u_int64_t bytes[2];
658 u_int64_t packets[2];
659 u_int32_t states;
660 u_int32_t conn;
661 struct pf_threshold conn_rate;
662 u_int32_t creation;
663 u_int32_t expire;
664 sa_family_t af;
665 u_int8_t ruletype;
666};
667
668#define PFSNODE_HIWAT 10000 /* default source node table size */
669
670struct pf_state_scrub {
671 struct timeval pfss_last; /* time received last packet */
672 u_int32_t pfss_tsecr; /* last echoed timestamp */
673 u_int32_t pfss_tsval; /* largest timestamp */
674 u_int32_t pfss_tsval0; /* original timestamp */
675 u_int16_t pfss_flags;
676#define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */
677#define PFSS_PAWS 0x0010 /* stricter PAWS checks */
678#define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */
679#define PFSS_DATA_TS 0x0040 /* timestamp on data packets */
680#define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */
681 u_int8_t pfss_ttl; /* stashed TTL */
682 u_int8_t pad;
683 u_int32_t pfss_ts_mod; /* timestamp modulation */
684};
685
686struct pf_state_host {
687 struct pf_addr addr;
688 u_int16_t port;
689 u_int16_t pad;
690};
691
692struct pf_state_peer {
693 u_int32_t seqlo; /* Max sequence number sent */
694 u_int32_t seqhi; /* Max the other end ACKd + win */
695 u_int32_t seqdiff; /* Sequence number modulator */
696 u_int16_t max_win; /* largest window (pre scaling) */
697 u_int8_t state; /* active state level */
698 u_int8_t wscale; /* window scaling factor */
699 u_int16_t mss; /* Maximum segment size option */
700 u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */
701 struct pf_state_scrub *scrub; /* state is scrubbed */
702 u_int8_t pad[3];
703};
704
705TAILQ_HEAD(pf_state_queue, pf_state);
706
707/* keep synced with struct pf_state_key, used in RB_FIND */
708struct pf_state_key_cmp {
709 struct pf_state_host lan;
710 struct pf_state_host gwy;
711 struct pf_state_host ext;
712 sa_family_t af;
713 u_int8_t proto;
714 u_int8_t direction;
715 u_int8_t pad;
716};
717
718TAILQ_HEAD(pf_statelist, pf_state);
719
720struct pf_state_key {
721 struct pf_state_host lan;
722 struct pf_state_host gwy;
723 struct pf_state_host ext;
724 sa_family_t af;
725 u_int8_t proto;
726 u_int8_t direction;
727 u_int8_t pad;
728
729 RB_ENTRY(pf_state_key) entry_lan_ext;
730 RB_ENTRY(pf_state_key) entry_ext_gwy;
731 struct pf_statelist states;
732 u_short refcnt; /* same size as if_index */
733};
734
735
736/* keep synced with struct pf_state, used in RB_FIND */
737struct pf_state_cmp {
738 u_int64_t id;
739 u_int32_t creatorid;
740 u_int32_t pad;
741};
742
743struct pf_state {
744 u_int64_t id;
745 u_int32_t creatorid;
746 u_int32_t pad;
747
748 TAILQ_ENTRY(pf_state) entry_list;
749 TAILQ_ENTRY(pf_state) next;
750 RB_ENTRY(pf_state) entry_id;
751 struct pf_state_peer src;
752 struct pf_state_peer dst;
753 union pf_rule_ptr rule;
754 union pf_rule_ptr anchor;
755 union pf_rule_ptr nat_rule;
756 struct pf_addr rt_addr;
757 struct pf_state_key *state_key;
758 struct pfi_kif *kif;
759 struct pfi_kif *rt_kif;
760 struct pf_src_node *src_node;
761 struct pf_src_node *nat_src_node;
762 u_int64_t packets[2];
763 u_int64_t bytes[2];
764 u_int32_t creation;
765 u_int32_t expire;
766 u_int32_t pfsync_time;
767 u_int16_t tag;
768 u_int8_t log;
769 u_int8_t allow_opts;
770 u_int8_t timeout;
771 u_int8_t sync_flags;
772#define PFSTATE_NOSYNC 0x01
773#define PFSTATE_FROMSYNC 0x02
774#define PFSTATE_STALE 0x04
775};
776
777/*
778 * Unified state structures for pulling states out of the kernel
779 * used by pfsync(4) and the pf(4) ioctl.
780 */
781struct pfsync_state_scrub {
782 u_int16_t pfss_flags;
783 u_int8_t pfss_ttl; /* stashed TTL */
784#define PFSYNC_SCRUB_FLAG_VALID 0x01
785 u_int8_t scrub_flag;
786 u_int32_t pfss_ts_mod; /* timestamp modulation */
787} __packed;
788
789struct pfsync_state_host {
790 struct pf_addr addr;
791 u_int16_t port;
792 u_int16_t pad[3];
793} __packed;
794
795struct pfsync_state_peer {
796 struct pfsync_state_scrub scrub; /* state is scrubbed */
797 u_int32_t seqlo; /* Max sequence number sent */
798 u_int32_t seqhi; /* Max the other end ACKd + win */
799 u_int32_t seqdiff; /* Sequence number modulator */
800 u_int16_t max_win; /* largest window (pre scaling) */
801 u_int16_t mss; /* Maximum segment size option */
802 u_int8_t state; /* active state level */
803 u_int8_t wscale; /* window scaling factor */
804 u_int8_t pad[6];
805} __packed;
806
807struct pfsync_state {
808 u_int32_t id[2];
809 char ifname[IFNAMSIZ];
810 struct pfsync_state_host lan;
811 struct pfsync_state_host gwy;
812 struct pfsync_state_host ext;
813 struct pfsync_state_peer src;
814 struct pfsync_state_peer dst;
815 struct pf_addr rt_addr;
816 u_int32_t rule;
817 u_int32_t anchor;
818 u_int32_t nat_rule;
819 u_int32_t creation;
820 u_int32_t expire;
821 u_int32_t packets[2][2];
822 u_int32_t bytes[2][2];
823 u_int32_t creatorid;
824 sa_family_t af;
825 u_int8_t proto;
826 u_int8_t direction;
827 u_int8_t log;
828 u_int8_t allow_opts;
829 u_int8_t timeout;
830 u_int8_t sync_flags;
831 u_int8_t updates;
832} __packed;
833
834#define PFSYNC_FLAG_COMPRESS 0x01
835#define PFSYNC_FLAG_STALE 0x02
836#define PFSYNC_FLAG_SRCNODE 0x04
837#define PFSYNC_FLAG_NATSRCNODE 0x08
838
839/* for copies to/from userland via pf_ioctl() */
840#define pf_state_peer_to_pfsync(s,d) do { \
841 (d)->seqlo = (s)->seqlo; \
842 (d)->seqhi = (s)->seqhi; \
843 (d)->seqdiff = (s)->seqdiff; \
844 (d)->max_win = (s)->max_win; \
845 (d)->mss = (s)->mss; \
846 (d)->state = (s)->state; \
847 (d)->wscale = (s)->wscale; \
848 if ((s)->scrub) { \
849 (d)->scrub.pfss_flags = \
850 (s)->scrub->pfss_flags & PFSS_TIMESTAMP; \
851 (d)->scrub.pfss_ttl = (s)->scrub->pfss_ttl; \
852 (d)->scrub.pfss_ts_mod = (s)->scrub->pfss_ts_mod; \
853 (d)->scrub.scrub_flag = PFSYNC_SCRUB_FLAG_VALID; \
854 } \
855} while (0)
856
857#define pf_state_peer_from_pfsync(s,d) do { \
858 (d)->seqlo = (s)->seqlo; \
859 (d)->seqhi = (s)->seqhi; \
860 (d)->seqdiff = (s)->seqdiff; \
861 (d)->max_win = (s)->max_win; \
862 (d)->mss = ntohs((s)->mss); \
863 (d)->state = (s)->state; \
864 (d)->wscale = (s)->wscale; \
865 if ((s)->scrub.scrub_flag == PFSYNC_SCRUB_FLAG_VALID && \
866 (d)->scrub != NULL) { \
867 (d)->scrub->pfss_flags = \
868 ntohs((s)->scrub.pfss_flags) & PFSS_TIMESTAMP; \
869 (d)->scrub->pfss_ttl = (s)->scrub.pfss_ttl; \
870 (d)->scrub->pfss_ts_mod = (s)->scrub.pfss_ts_mod; \
871 } \
872} while (0)
873
874#define pf_state_counter_to_pfsync(s,d) do { \
875 d[0] = (s>>32)&0xffffffff; \
876 d[1] = s&0xffffffff; \
877} while (0)
878
879#define pf_state_counter_from_pfsync(s) \
880 (((u_int64_t)(s[0])<<32) | (u_int64_t)(s[1]))
881
882
883
884TAILQ_HEAD(pf_rulequeue, pf_rule);
885
886struct pf_anchor;
887
888struct pf_ruleset {
889 struct {
890 struct pf_rulequeue queues[2];
891 struct {
892 struct pf_rulequeue *ptr;
893 struct pf_rule **ptr_array;
894 u_int32_t rcount;
895 u_int32_t ticket;
896 int open;
897 } active, inactive;
898 } rules[PF_RULESET_MAX];
899 struct pf_anchor *anchor;
900 u_int32_t tticket;
901 int tables;
902 int topen;
903};
904
905RB_HEAD(pf_anchor_global, pf_anchor);
906RB_HEAD(pf_anchor_node, pf_anchor);
907struct pf_anchor {
908 RB_ENTRY(pf_anchor) entry_global;
909 RB_ENTRY(pf_anchor) entry_node;
910 struct pf_anchor *parent;
911 struct pf_anchor_node children;
912 char name[PF_ANCHOR_NAME_SIZE];
913 char path[MAXPATHLEN];
914 struct pf_ruleset ruleset;
915 int refcnt; /* anchor rules */
916 int match;
917};
918RB_PROTOTYPE(pf_anchor_global, pf_anchor, entry_global, pf_anchor_compare);
919RB_PROTOTYPE(pf_anchor_node, pf_anchor, entry_node, pf_anchor_compare);
920
921#define PF_RESERVED_ANCHOR "_pf"
922
923#define PFR_TFLAG_PERSIST 0x00000001
924#define PFR_TFLAG_CONST 0x00000002
925#define PFR_TFLAG_ACTIVE 0x00000004
926#define PFR_TFLAG_INACTIVE 0x00000008
927#define PFR_TFLAG_REFERENCED 0x00000010
928#define PFR_TFLAG_REFDANCHOR 0x00000020
929#define PFR_TFLAG_USRMASK 0x00000003
930#define PFR_TFLAG_SETMASK 0x0000003C
931#define PFR_TFLAG_ALLMASK 0x0000003F
932
933struct pfr_table {
934 char pfrt_anchor[MAXPATHLEN];
935 char pfrt_name[PF_TABLE_NAME_SIZE];
936 u_int32_t pfrt_flags;
937 u_int8_t pfrt_fback;
938};
939
940enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED,
941 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE,
942 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_MAX };
943
944struct pfr_addr {
945 union {
946 struct in_addr _pfra_ip4addr;
947 struct in6_addr _pfra_ip6addr;
948 } pfra_u;
949 u_int8_t pfra_af;
950 u_int8_t pfra_net;
951 u_int8_t pfra_not;
952 u_int8_t pfra_fback;
953};
954#define pfra_ip4addr pfra_u._pfra_ip4addr
955#define pfra_ip6addr pfra_u._pfra_ip6addr
956
957enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX };
958enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX };
959#define PFR_OP_XPASS PFR_OP_ADDR_MAX
960
961struct pfr_astats {
962 struct pfr_addr pfras_a;
963 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
964 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
965 long pfras_tzero;
966};
967
968enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX };
969
970struct pfr_tstats {
971 struct pfr_table pfrts_t;
972 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
973 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
974 u_int64_t pfrts_match;
975 u_int64_t pfrts_nomatch;
976 long pfrts_tzero;
977 int pfrts_cnt;
978 int pfrts_refcnt[PFR_REFCNT_MAX];
979};
980#define pfrts_name pfrts_t.pfrt_name
981#define pfrts_flags pfrts_t.pfrt_flags
982
983#ifndef _SOCKADDR_UNION_DEFINED
984#define _SOCKADDR_UNION_DEFINED
985union sockaddr_union {
986 struct sockaddr sa;
987 struct sockaddr_in sin;
988 struct sockaddr_in6 sin6;
989};
990#endif /* _SOCKADDR_UNION_DEFINED */
991
992SLIST_HEAD(pfr_kentryworkq, pfr_kentry);
993struct pfr_kentry {
994 struct radix_node pfrke_node[2];
995 union sockaddr_union pfrke_sa;
996 u_int64_t pfrke_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
997 u_int64_t pfrke_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
998 SLIST_ENTRY(pfr_kentry) pfrke_workq;
999 long pfrke_tzero;
1000 u_int8_t pfrke_af;
1001 u_int8_t pfrke_net;
1002 u_int8_t pfrke_not;
1003 u_int8_t pfrke_mark;
1004 u_int8_t pfrke_intrpool;
1005};
1006
1007SLIST_HEAD(pfr_ktableworkq, pfr_ktable);
1008RB_HEAD(pfr_ktablehead, pfr_ktable);
1009struct pfr_ktable {
1010 struct pfr_tstats pfrkt_ts;
1011 RB_ENTRY(pfr_ktable) pfrkt_tree;
1012 SLIST_ENTRY(pfr_ktable) pfrkt_workq;
1013 struct radix_node_head *pfrkt_ip4;
1014 struct radix_node_head *pfrkt_ip6;
1015 struct pfr_ktable *pfrkt_shadow;
1016 struct pfr_ktable *pfrkt_root;
1017 struct pf_ruleset *pfrkt_rs;
1018 long pfrkt_larg;
1019 int pfrkt_nflags;
1020};
1021#define pfrkt_t pfrkt_ts.pfrts_t
1022#define pfrkt_name pfrkt_t.pfrt_name
1023#define pfrkt_anchor pfrkt_t.pfrt_anchor
1024#define pfrkt_ruleset pfrkt_t.pfrt_ruleset
1025#define pfrkt_flags pfrkt_t.pfrt_flags
1026#define pfrkt_cnt pfrkt_ts.pfrts_cnt
1027#define pfrkt_refcnt pfrkt_ts.pfrts_refcnt
1028#define pfrkt_packets pfrkt_ts.pfrts_packets
1029#define pfrkt_bytes pfrkt_ts.pfrts_bytes
1030#define pfrkt_match pfrkt_ts.pfrts_match
1031#define pfrkt_nomatch pfrkt_ts.pfrts_nomatch
1032#define pfrkt_tzero pfrkt_ts.pfrts_tzero
1033
1034RB_HEAD(pf_state_tree_lan_ext, pf_state_key);
1035RB_PROTOTYPE(pf_state_tree_lan_ext, pf_state_key,
1036 entry_lan_ext, pf_state_compare_lan_ext);
1037
1038RB_HEAD(pf_state_tree_ext_gwy, pf_state_key);
1039RB_PROTOTYPE(pf_state_tree_ext_gwy, pf_state_key,
1040 entry_ext_gwy, pf_state_compare_ext_gwy);
1041
1042RB_HEAD(pfi_ifhead, pfi_kif);
1043
1044/* state tables */
1045extern struct pf_state_tree_lan_ext pf_statetbl_lan_ext;
1046extern struct pf_state_tree_ext_gwy pf_statetbl_ext_gwy;
1047
1048/* keep synced with pfi_kif, used in RB_FIND */
1049struct pfi_kif_cmp {
1050 char pfik_name[IFNAMSIZ];
1051};
1052
1053struct pfi_kif {
1054 char pfik_name[IFNAMSIZ];
1055 RB_ENTRY(pfi_kif) pfik_tree;
1056 u_int64_t pfik_packets[2][2][2];
1057 u_int64_t pfik_bytes[2][2][2];
1058 u_int32_t pfik_tzero;
1059 int pfik_flags;
1060 void *pfik_ah_cookie;
1061 struct ifnet *pfik_ifp;
1062 struct ifg_group *pfik_group;
1063 int pfik_states;
1064 int pfik_rules;
1065 TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs;
1066};
1067
1068enum pfi_kif_refs {
1069 PFI_KIF_REF_NONE,
1070 PFI_KIF_REF_STATE,
1071 PFI_KIF_REF_RULE
1072};
1073
1074#define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */
1075
1076struct pf_pdesc {
1077 struct {
1078 int done;
1079 uid_t uid;
1080 gid_t gid;
1081 pid_t pid;
1082 } lookup;
1083 u_int64_t tot_len; /* Make Mickey money */
1084 union {
1085 struct tcphdr *tcp;
1086 struct udphdr *udp;
1087 struct icmp *icmp;
1088#ifdef INET6
1089 struct icmp6_hdr *icmp6;
1090#endif /* INET6 */
1091 void *any;
1092 } hdr;
1093 struct pf_addr baddr; /* address before translation */
1094 struct pf_addr naddr; /* address after translation */
1095 struct pf_rule *nat_rule; /* nat/rdr rule applied to packet */
1096 struct pf_addr *src;
1097 struct pf_addr *dst;
1098 struct ether_header
1099 *eh;
1100 u_int16_t *ip_sum;
1101 u_int32_t p_len; /* total length of payload */
1102 u_int16_t flags; /* Let SCRUB trigger behavior in
1103 * state code. Easier than tags */
1104#define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */
1105#define PFDESC_IP_REAS 0x0002 /* IP frags would've been reassembled */
1106 sa_family_t af;
1107 u_int8_t proto;
1108 u_int8_t tos;
1109};
1110
1111/* flags for RDR options */
1112#define PF_DPORT_RANGE 0x01 /* Dest port uses range */
1113#define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */
1114
1115/* Reasons code for passing/dropping a packet */
1116#define PFRES_MATCH 0 /* Explicit match of a rule */
1117#define PFRES_BADOFF 1 /* Bad offset for pull_hdr */
1118#define PFRES_FRAG 2 /* Dropping following fragment */
1119#define PFRES_SHORT 3 /* Dropping short packet */
1120#define PFRES_NORM 4 /* Dropping by normalizer */
1121#define PFRES_MEMORY 5 /* Dropped due to lacking mem */
1122#define PFRES_TS 6 /* Bad TCP Timestamp (RFC1323) */
1123#define PFRES_CONGEST 7 /* Congestion (of IP queue) */
1124#define PFRES_IPOPTIONS 8 /* IP option */
1125#define PFRES_PROTCKSUM 9 /* Protocol checksum invalid */
1126#define PFRES_BADSTATE 10 /* State mismatch */
1127#define PFRES_STATEINS 11 /* State insertion failure */
1128#define PFRES_MAXSTATES 12 /* State limit */
1129#define PFRES_SRCLIMIT 13 /* Source node/conn limit */
1130#define PFRES_SYNPROXY 14 /* SYN proxy */
1131#define PFRES_STATELOCKED 15 /* state table locked */
1132#define PFRES_MAX 16 /* total+1 */
1133
1134#define PFRES_NAMES { \
1135 "match", \
1136 "bad-offset", \
1137 "fragment", \
1138 "short", \
1139 "normalize", \
1140 "memory", \
1141 "bad-timestamp", \
1142 "congestion", \
1143 "ip-option", \
1144 "proto-cksum", \
1145 "state-mismatch", \
1146 "state-insert", \
1147 "state-limit", \
1148 "src-limit", \
1149 "synproxy", \
1150 "state-locked", \
1151 NULL \
1152}
1153
1154/* Counters for other things we want to keep track of */
1155#define LCNT_STATES 0 /* states */
1156#define LCNT_SRCSTATES 1 /* max-src-states */
1157#define LCNT_SRCNODES 2 /* max-src-nodes */
1158#define LCNT_SRCCONN 3 /* max-src-conn */
1159#define LCNT_SRCCONNRATE 4 /* max-src-conn-rate */
1160#define LCNT_OVERLOAD_TABLE 5 /* entry added to overload table */
1161#define LCNT_OVERLOAD_FLUSH 6 /* state entries flushed */
1162#define LCNT_MAX 7 /* total+1 */
1163
1164#define LCNT_NAMES { \
1165 "max states per rule", \
1166 "max-src-states", \
1167 "max-src-nodes", \
1168 "max-src-conn", \
1169 "max-src-conn-rate", \
1170 "overload table insertion", \
1171 "overload flush states", \
1172 NULL \
1173}
1174
1175/* UDP state enumeration */
1176#define PFUDPS_NO_TRAFFIC 0
1177#define PFUDPS_SINGLE 1
1178#define PFUDPS_MULTIPLE 2
1179
1180#define PFUDPS_NSTATES 3 /* number of state levels */
1181
1182#define PFUDPS_NAMES { \
1183 "NO_TRAFFIC", \
1184 "SINGLE", \
1185 "MULTIPLE", \
1186 NULL \
1187}
1188
1189/* Other protocol state enumeration */
1190#define PFOTHERS_NO_TRAFFIC 0
1191#define PFOTHERS_SINGLE 1
1192#define PFOTHERS_MULTIPLE 2
1193
1194#define PFOTHERS_NSTATES 3 /* number of state levels */
1195
1196#define PFOTHERS_NAMES { \
1197 "NO_TRAFFIC", \
1198 "SINGLE", \
1199 "MULTIPLE", \
1200 NULL \
1201}
1202
1203#define FCNT_STATE_SEARCH 0
1204#define FCNT_STATE_INSERT 1
1205#define FCNT_STATE_REMOVALS 2
1206#define FCNT_MAX 3
1207
1208#define SCNT_SRC_NODE_SEARCH 0
1209#define SCNT_SRC_NODE_INSERT 1
1210#define SCNT_SRC_NODE_REMOVALS 2
1211#define SCNT_MAX 3
1212
1213#define ACTION_SET(a, x) \
1214 do { \
1215 if ((a) != NULL) \
1216 *(a) = (x); \
1217 } while (0)
1218
1219#define REASON_SET(a, x) \
1220 do { \
1221 if ((a) != NULL) \
1222 *(a) = (x); \
1223 if (x < PFRES_MAX) \
1224 pf_status.counters[x]++; \
1225 } while (0)
1226#define REASON_SET_NOPTR(a, x) \
1227 do { \
1228 *(a) = (x); \
1229 if (x < PFRES_MAX) \
1230 pf_status.counters[x]++; \
1231 } while (0)
1232
1233struct pf_status {
1234 u_int64_t counters[PFRES_MAX];
1235 u_int64_t lcounters[LCNT_MAX]; /* limit counters */
1236 u_int64_t fcounters[FCNT_MAX];
1237 u_int64_t scounters[SCNT_MAX];
1238 u_int64_t pcounters[2][2][3];
1239 u_int64_t bcounters[2][2];
1240 u_int64_t stateid;
1241 u_int32_t running;
1242 u_int32_t states;
1243 u_int32_t src_nodes;
1244 u_int32_t since;
1245 u_int32_t debug;
1246 u_int32_t hostid;
1247 char ifname[IFNAMSIZ];
1248 u_int8_t pf_chksum[PF_MD5_DIGEST_LENGTH];
1249};
1250
1251struct cbq_opts {
1252 u_int minburst;
1253 u_int maxburst;
1254 u_int pktsize;
1255 u_int maxpktsize;
1256 u_int ns_per_byte;
1257 u_int maxidle;
1258 int minidle;
1259 u_int offtime;
1260 int flags;
1261};
1262
1263struct priq_opts {
1264 int flags;
1265};
1266
1267struct hfsc_opts {
1268 /* real-time service curve */
1269 u_int rtsc_m1; /* slope of the 1st segment in bps */
1270 u_int rtsc_d; /* the x-projection of m1 in msec */
1271 u_int rtsc_m2; /* slope of the 2nd segment in bps */
1272 /* link-sharing service curve */
1273 u_int lssc_m1;
1274 u_int lssc_d;
1275 u_int lssc_m2;
1276 /* upper-limit service curve */
1277 u_int ulsc_m1;
1278 u_int ulsc_d;
1279 u_int ulsc_m2;
1280 int flags;
1281};
1282
1283struct pf_altq {
1284 char ifname[IFNAMSIZ];
1285
1286 void *altq_disc; /* discipline-specific state */
1287 TAILQ_ENTRY(pf_altq) entries;
1288
1289 /* scheduler spec */
1290 u_int8_t scheduler; /* scheduler type */
1291 u_int16_t tbrsize; /* tokenbucket regulator size */
1292 u_int32_t ifbandwidth; /* interface bandwidth */
1293
1294 /* queue spec */
1295 char qname[PF_QNAME_SIZE]; /* queue name */
1296 char parent[PF_QNAME_SIZE]; /* parent name */
1297 u_int32_t parent_qid; /* parent queue id */
1298 u_int32_t bandwidth; /* queue bandwidth */
1299 u_int8_t priority; /* priority */
1300 u_int16_t qlimit; /* queue size limit */
1301 u_int16_t flags; /* misc flags */
1302 union {
1303 struct cbq_opts cbq_opts;
1304 struct priq_opts priq_opts;
1305 struct hfsc_opts hfsc_opts;
1306 } pq_u;
1307
1308 u_int32_t qid; /* return value */
1309};
1310
1311struct pf_tag {
1312 u_int16_t tag; /* tag id */
1313};
1314
1315struct pf_tagname {
1316 TAILQ_ENTRY(pf_tagname) entries;
1317 char name[PF_TAG_NAME_SIZE];
1318 u_int16_t tag;
1319 int ref;
1320};
1321
1322#define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */
1323#define PFFRAG_FRAG_HIWAT 1000 /* Number of fragmented packets */
1324#define PFFRAG_FRCENT_HIWAT 50000 /* Number of fragment cache entries */
1325#define PFFRAG_FRCACHE_HIWAT 10000 /* Number of fragment descriptors */
1326
1327#define PFR_KTABLE_HIWAT 1000 /* Number of tables */
1328#define PFR_KENTRY_HIWAT 200000 /* Number of table entries */
1329#define PFR_KENTRY_HIWAT_SMALL 100000 /* Number of table entries (tiny hosts) */
1330
1331/*
1332 * ioctl parameter structures
1333 */
1334
1335struct pfioc_pooladdr {
1336 u_int32_t action;
1337 u_int32_t ticket;
1338 u_int32_t nr;
1339 u_int32_t r_num;
1340 u_int8_t r_action;
1341 u_int8_t r_last;
1342 u_int8_t af;
1343 char anchor[MAXPATHLEN];
1344 struct pf_pooladdr addr;
1345};
1346
1347struct pfioc_rule {
1348 u_int32_t action;
1349 u_int32_t ticket;
1350 u_int32_t pool_ticket;
1351 u_int32_t nr;
1352 char anchor[MAXPATHLEN];
1353 char anchor_call[MAXPATHLEN];
1354 struct pf_rule rule;
1355};
1356
1357struct pfioc_natlook {
1358 struct pf_addr saddr;
1359 struct pf_addr daddr;
1360 struct pf_addr rsaddr;
1361 struct pf_addr rdaddr;
1362 u_int16_t sport;
1363 u_int16_t dport;
1364 u_int16_t rsport;
1365 u_int16_t rdport;
1366 sa_family_t af;
1367 u_int8_t proto;
1368 u_int8_t direction;
1369};
1370
1371struct pfioc_state {
1372 u_int32_t nr;
1373 void *state;
1374};
1375
1376struct pfioc_src_node_kill {
1377 /* XXX returns the number of src nodes killed in psnk_af */
1378 sa_family_t psnk_af;
1379 struct pf_rule_addr psnk_src;
1380 struct pf_rule_addr psnk_dst;
1381};
1382
1383struct pfioc_state_kill {
1384 /* XXX returns the number of states killed in psk_af */
1385 sa_family_t psk_af;
1386 int psk_proto;
1387 struct pf_rule_addr psk_src;
1388 struct pf_rule_addr psk_dst;
1389 char psk_ifname[IFNAMSIZ];
1390};
1391
1392struct pfioc_states {
1393 int ps_len;
1394 union {
1395 void *psu_buf;
1396 struct pfsync_state *psu_states;
1397 } ps_u;
1398#define ps_buf ps_u.psu_buf
1399#define ps_states ps_u.psu_states
1400};
1401
1402struct pfioc_src_nodes {
1403 int psn_len;
1404 union {
1405 void *psu_buf;
1406 struct pf_src_node *psu_src_nodes;
1407 } psn_u;
1408#define psn_buf psn_u.psu_buf
1409#define psn_src_nodes psn_u.psu_src_nodes
1410};
1411
1412struct pfioc_if {
1413 char ifname[IFNAMSIZ];
1414};
1415
1416struct pfioc_tm {
1417 int timeout;
1418 int seconds;
1419};
1420
1421struct pfioc_limit {
1422 int index;
1423 unsigned limit;
1424};
1425
1426struct pfioc_altq {
1427 u_int32_t action;
1428 u_int32_t ticket;
1429 u_int32_t nr;
1430 struct pf_altq altq;
1431};
1432
1433struct pfioc_qstats {
1434 u_int32_t ticket;
1435 u_int32_t nr;
1436 void *buf;
1437 int nbytes;
1438 u_int8_t scheduler;
1439};
1440
1441struct pfioc_ruleset {
1442 u_int32_t nr;
1443 char path[MAXPATHLEN];
1444 char name[PF_ANCHOR_NAME_SIZE];
1445};
1446
1447#define PF_RULESET_ALTQ (PF_RULESET_MAX)
1448#define PF_RULESET_TABLE (PF_RULESET_MAX+1)
1449struct pfioc_trans {
1450 int size; /* number of elements */
1451 int esize; /* size of each element in bytes */
1452 struct pfioc_trans_e {
1453 int rs_num;
1454 char anchor[MAXPATHLEN];
1455 u_int32_t ticket;
1456 } *array;
1457};
1458
1459#define PFR_FLAG_ATOMIC 0x00000001
1460#define PFR_FLAG_DUMMY 0x00000002
1461#define PFR_FLAG_FEEDBACK 0x00000004
1462#define PFR_FLAG_CLSTATS 0x00000008
1463#define PFR_FLAG_ADDRSTOO 0x00000010
1464#define PFR_FLAG_REPLACE 0x00000020
1465#define PFR_FLAG_ALLRSETS 0x00000040
1466#define PFR_FLAG_ALLMASK 0x0000007F
1467#ifdef _KERNEL
1468#define PFR_FLAG_USERIOCTL 0x10000000
1469#endif
1470
1471struct pfioc_table {
1472 struct pfr_table pfrio_table;
1473 void *pfrio_buffer;
1474 int pfrio_esize;
1475 int pfrio_size;
1476 int pfrio_size2;
1477 int pfrio_nadd;
1478 int pfrio_ndel;
1479 int pfrio_nchange;
1480 int pfrio_flags;
1481 u_int32_t pfrio_ticket;
1482};
1483#define pfrio_exists pfrio_nadd
1484#define pfrio_nzero pfrio_nadd
1485#define pfrio_nmatch pfrio_nadd
1486#define pfrio_naddr pfrio_size2
1487#define pfrio_setflag pfrio_size2
1488#define pfrio_clrflag pfrio_nadd
1489
1490struct pfioc_iface {
1491 char pfiio_name[IFNAMSIZ];
1492 void *pfiio_buffer;
1493 int pfiio_esize;
1494 int pfiio_size;
1495 int pfiio_nzero;
1496 int pfiio_flags;
1497};
1498
1499
1500/*
1501 * ioctl operations
1502 */
1503
1504#define DIOCSTART _IO ('D', 1)
1505#define DIOCSTOP _IO ('D', 2)
1506#define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule)
1507#define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule)
1508#define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule)
1509#define DIOCSETLCK _IOWR('D', 8, uint32_t)
1510/* XXX cut 9 - 17 */
1511#define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill)
1512#define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state)
1513#define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if)
1514#define DIOCGETSTATUS _IOWR('D', 21, struct pf_status)
1515#define DIOCCLRSTATUS _IO ('D', 22)
1516#define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook)
1517#define DIOCSETDEBUG _IOWR('D', 24, u_int32_t)
1518#define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states)
1519#define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule)
1520/* XXX cut 26 - 28 */
1521#define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm)
1522#define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm)
1523#define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state)
1524#define DIOCCLRRULECTRS _IO ('D', 38)
1525#define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit)
1526#define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit)
1527#define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill)
1528#define DIOCSTARTALTQ _IO ('D', 42)
1529#define DIOCSTOPALTQ _IO ('D', 43)
1530#define DIOCADDALTQ _IOWR('D', 45, struct pfioc_altq)
1531#define DIOCGETALTQS _IOWR('D', 47, struct pfioc_altq)
1532#define DIOCGETALTQ _IOWR('D', 48, struct pfioc_altq)
1533#define DIOCCHANGEALTQ _IOWR('D', 49, struct pfioc_altq)
1534#define DIOCGETQSTATS _IOWR('D', 50, struct pfioc_qstats)
1535#define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr)
1536#define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr)
1537#define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr)
1538#define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr)
1539#define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr)
1540#define DIOCADDSTATES _IOWR('D', 56, struct pfioc_states)
1541/* XXX cut 57 - 57 */
1542#define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset)
1543#define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset)
1544#define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table)
1545#define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table)
1546#define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table)
1547#define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table)
1548#define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table)
1549#define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table)
1550#define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table)
1551#define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table)
1552#define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table)
1553#define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table)
1554#define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table)
1555#define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table)
1556#define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table)
1557#define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table)
1558#define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table)
1559#define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table)
1560#define DIOCOSFPFLUSH _IO('D', 78)
1561#define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl)
1562#define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl)
1563#define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans)
1564#define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans)
1565#define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans)
1566#define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes)
1567#define DIOCCLRSRCNODES _IO('D', 85)
1568#define DIOCSETHOSTID _IOWR('D', 86, u_int32_t)
1569#define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface)
1570#define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface)
1571#define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface)
1572#define DIOCKILLSRCNODES _IOWR('D', 91, struct pfioc_src_node_kill)
1573
1574#ifdef _KERNEL
1575RB_HEAD(pf_src_tree, pf_src_node);
1576RB_PROTOTYPE(pf_src_tree, pf_src_node, entry, pf_src_compare);
1577extern struct pf_src_tree tree_src_tracking;
1578
1579RB_HEAD(pf_state_tree_id, pf_state);
1580RB_PROTOTYPE(pf_state_tree_id, pf_state,
1581 entry_id, pf_state_compare_id);
1582extern struct pf_state_tree_id tree_id;
1583extern struct pf_state_queue state_list;
1584
1585TAILQ_HEAD(pf_poolqueue, pf_pool);
1586extern struct pf_poolqueue pf_pools[2];
1587TAILQ_HEAD(pf_altqqueue, pf_altq);
1588extern struct pf_altqqueue pf_altqs[2];
1589extern struct pf_palist pf_pabuf;
1590
1591extern u_int32_t ticket_altqs_active;
1592extern u_int32_t ticket_altqs_inactive;
1593extern int altqs_inactive_open;
1594extern u_int32_t ticket_pabuf;
1595extern struct pf_altqqueue *pf_altqs_active;
1596extern struct pf_altqqueue *pf_altqs_inactive;
1597extern struct pf_poolqueue *pf_pools_active;
1598extern struct pf_poolqueue *pf_pools_inactive;
1599extern int pf_tbladdr_setup(struct pf_ruleset *,
1600 struct pf_addr_wrap *);
1601extern void pf_tbladdr_remove(struct pf_addr_wrap *);
1602extern void pf_tbladdr_copyout(struct pf_addr_wrap *);
1603extern void pf_calc_skip_steps(struct pf_rulequeue *);
1604extern struct pool pf_src_tree_pl, pf_rule_pl;
1605extern struct pool pf_state_pl, pf_state_key_pl, pf_altq_pl,
1606 pf_pooladdr_pl;
1607extern struct pool pf_state_scrub_pl;
1608extern void pf_purge_thread(void *);
1609extern void pf_purge_expired_src_nodes(int);
1610extern void pf_purge_expired_states(u_int32_t);
1611extern void pf_unlink_state(struct pf_state *);
1612extern void pf_free_state(struct pf_state *);
1613extern int pf_insert_state(struct pfi_kif *,
1614 struct pf_state *);
1615extern int pf_insert_src_node(struct pf_src_node **,
1616 struct pf_rule *, struct pf_addr *,
1617 sa_family_t);
1618void pf_src_tree_remove_state(struct pf_state *);
1619extern struct pf_state *pf_find_state_byid(struct pf_state_cmp *);
1620extern struct pf_state *pf_find_state_all(struct pf_state_key_cmp *,
1621 u_int8_t, int *);
1622extern void pf_print_state(struct pf_state *);
1623extern void pf_print_flags(u_int8_t);
1624extern u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t,
1625 u_int8_t);
1626
1627extern struct ifnet *sync_ifp;
1628extern struct pf_rule pf_default_rule;
1629extern void pf_addrcpy(struct pf_addr *,
1630 const struct pf_addr *, u_int8_t);
1631void pf_rm_rule(struct pf_rulequeue *,
1632 struct pf_rule *);
1633
1634#ifdef INET
1635int pf_test(int, struct ifnet *, struct mbuf **, struct ether_header *);
1636#endif /* INET */
1637
1638#ifdef INET6
1639int pf_test6(int, struct ifnet *, struct mbuf **, struct ether_header *);
1640void pf_poolmask(struct pf_addr *, struct pf_addr*,
1641 struct pf_addr *, const struct pf_addr *, u_int8_t);
1642void pf_addr_inc(struct pf_addr *, sa_family_t);
1643#endif /* INET6 */
1644
1645void *pf_pull_hdr(struct mbuf *, int, void *, int, u_short *, u_short *,
1646 sa_family_t);
1647void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t);
1648int pflog_packet(struct pfi_kif *, struct mbuf *, sa_family_t, u_int8_t,
1649 u_int8_t, struct pf_rule *, struct pf_rule *, struct pf_ruleset *,
1650 struct pf_pdesc *);
1651int pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *,
1652 struct pf_addr *, sa_family_t);
1653int pf_match(u_int8_t, u_int32_t, u_int32_t, u_int32_t);
1654int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t);
1655int pf_match_uid(u_int8_t, uid_t, uid_t, uid_t);
1656int pf_match_gid(u_int8_t, gid_t, gid_t, gid_t);
1657
1658void pf_normalize_init(void);
1659#ifdef _MODULE
1660void pf_normalize_destroy(void);
1661#endif /* _MODULE */
1662int pf_normalize_ip(struct mbuf **, int, struct pfi_kif *, u_short *,
1663 struct pf_pdesc *);
1664int pf_normalize_ip6(struct mbuf **, int, struct pfi_kif *, u_short *,
1665 struct pf_pdesc *);
1666int pf_normalize_tcp(int, struct pfi_kif *, struct mbuf *, int, int, void *,
1667 struct pf_pdesc *);
1668void pf_normalize_tcp_cleanup(struct pf_state *);
1669int pf_normalize_tcp_init(struct mbuf *, int, struct pf_pdesc *,
1670 struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *);
1671int pf_normalize_tcp_stateful(struct mbuf *, int, struct pf_pdesc *,
1672 u_short *, struct tcphdr *, struct pf_state *,
1673 struct pf_state_peer *, struct pf_state_peer *, int *);
1674u_int32_t
1675 pf_state_expires(const struct pf_state *);
1676void pf_purge_expired_fragments(void);
1677int pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kif *);
1678int pf_rtlabel_match(struct pf_addr *, sa_family_t, struct pf_addr_wrap *);
1679int pf_socket_lookup(int, struct pf_pdesc *);
1680struct pf_state_key *
1681 pf_alloc_state_key(struct pf_state *);
1682void pfr_initialize(void);
1683#ifdef _MODULE
1684void pfr_destroy(void);
1685#endif /* _MODULE */
1686int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t);
1687void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t,
1688 u_int64_t, int, int, int);
1689int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *,
1690 struct pf_addr **, struct pf_addr **, sa_family_t);
1691void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *);
1692struct pfr_ktable *
1693 pfr_attach_table(struct pf_ruleset *, char *);
1694void pfr_detach_table(struct pfr_ktable *);
1695int pfr_clr_tables(struct pfr_table *, int *, int);
1696int pfr_add_tables(struct pfr_table *, int, int *, int);
1697int pfr_del_tables(struct pfr_table *, int, int *, int);
1698int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int);
1699int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int);
1700int pfr_clr_tstats(struct pfr_table *, int, int *, int);
1701int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int);
1702int pfr_clr_addrs(struct pfr_table *, int *, int);
1703int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *, long);
1704int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
1705 int);
1706int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
1707 int);
1708int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
1709 int *, int *, int *, int, u_int32_t);
1710int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int);
1711int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int);
1712int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *,
1713 int);
1714int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
1715 int);
1716int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int);
1717int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int);
1718int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int);
1719int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *,
1720 int *, u_int32_t, int);
1721
1722extern struct pfi_kif *pfi_all;
1723
1724void pfi_initialize(void);
1725#ifdef _MODULE
1726void pfi_destroy(void);
1727#endif /* _MODULE */
1728struct pfi_kif *pfi_kif_get(const char *);
1729void pfi_kif_ref(struct pfi_kif *, enum pfi_kif_refs);
1730void pfi_kif_unref(struct pfi_kif *, enum pfi_kif_refs);
1731int pfi_kif_match(struct pfi_kif *, struct pfi_kif *);
1732void pfi_attach_ifnet(struct ifnet *);
1733void pfi_detach_ifnet(struct ifnet *);
1734void pfi_attach_ifgroup(struct ifg_group *);
1735void pfi_detach_ifgroup(struct ifg_group *);
1736void pfi_group_change(const char *);
1737int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *,
1738 sa_family_t);
1739int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t);
1740void pfi_dynaddr_remove(struct pf_addr_wrap *);
1741void pfi_dynaddr_copyout(struct pf_addr_wrap *);
1742void pfi_fill_oldstatus(struct pf_status *);
1743int pfi_clr_istats(const char *);
1744int pfi_get_ifaces(const char *, struct pfi_kif *, int *);
1745int pfi_set_flags(const char *, int);
1746int pfi_clear_flags(const char *, int);
1747
1748u_int16_t pf_tagname2tag(char *);
1749void pf_tag2tagname(u_int16_t, char *);
1750void pf_tag_ref(u_int16_t);
1751void pf_tag_unref(u_int16_t);
1752int pf_tag_packet(struct mbuf *, int, int);
1753u_int32_t pf_qname2qid(char *);
1754void pf_qid2qname(u_int32_t, char *);
1755void pf_qid_unref(u_int32_t);
1756
1757extern struct pf_status pf_status;
1758extern struct pool pf_frent_pl, pf_frag_pl;
1759#ifdef __NetBSD__
1760extern krwlock_t pf_consistency_lock;
1761#else
1762extern struct rwlock pf_consistency_lock;
1763#endif /* !__NetBSD__ */
1764
1765struct pf_pool_limit {
1766 void *pp;
1767 unsigned limit;
1768};
1769extern struct pf_pool_limit pf_pool_limits[PF_LIMIT_MAX];
1770
1771/*
1772 * misc compatibility definitions
1773 */
1774#if !defined(PRIu32)
1775#define PRIu32 "u" /* XXX */
1776#endif
1777
1778#if !defined(NO_PID)
1779#define NO_PID (PID_MAX + 1)
1780#endif
1781
1782#if defined(__NetBSD__)
1783/* rwlock compatibility definitions */
1784#define rw_enter_write(a) rw_enter((a), (RW_WRITER))
1785#define rw_exit_write(a) rw_exit((a))
1786#define rw_enter_read(a) rw_enter((a), (RW_READER))
1787#define rw_exit_read(a) rw_exit((a))
1788#endif /* __NetBSD__ */
1789
1790#endif /* _KERNEL */
1791
1792extern struct pf_anchor_global pf_anchors;
1793extern struct pf_anchor pf_main_anchor;
1794#define pf_main_ruleset pf_main_anchor.ruleset
1795
1796/* these ruleset functions can be linked into userland programs (pfctl) */
1797int pf_get_ruleset_number(u_int8_t);
1798void pf_init_ruleset(struct pf_ruleset *);
1799int pf_anchor_setup(struct pf_rule *,
1800 const struct pf_ruleset *, const char *);
1801int pf_anchor_copyout(const struct pf_ruleset *,
1802 const struct pf_rule *, struct pfioc_rule *);
1803void pf_anchor_remove(struct pf_rule *);
1804void pf_remove_if_empty_ruleset(struct pf_ruleset *);
1805struct pf_anchor *pf_find_anchor(const char *);
1806struct pf_ruleset *pf_find_ruleset(const char *);
1807struct pf_ruleset *pf_find_or_create_ruleset(const char *);
1808void pf_rs_initialize(void);
1809
1810#ifdef _KERNEL
1811int pf_anchor_copyout(const struct pf_ruleset *,
1812 const struct pf_rule *, struct pfioc_rule *);
1813void pf_anchor_remove(struct pf_rule *);
1814
1815#endif /* _KERNEL */
1816
1817/* The fingerprint functions can be linked into userland programs (tcpdump) */
1818int pf_osfp_add(struct pf_osfp_ioctl *);
1819#ifdef _KERNEL
1820struct pf_osfp_enlist *
1821 pf_osfp_fingerprint(struct pf_pdesc *, struct mbuf *, int,
1822 const struct tcphdr *);
1823#endif /* _KERNEL */
1824struct pf_osfp_enlist *
1825 pf_osfp_fingerprint_hdr(const struct ip *, const struct ip6_hdr *,
1826 const struct tcphdr *);
1827void pf_osfp_flush(void);
1828int pf_osfp_get(struct pf_osfp_ioctl *);
1829void pf_osfp_initialize(void);
1830#ifdef _MODULE
1831void pf_osfp_destroy(void);
1832#endif /* _MODULE */
1833int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t);
1834struct pf_os_fingerprint *
1835 pf_osfp_validate(void);
1836
1837
1838#endif /* _NET_PFVAR_H_ */