1/* $FreeBSD: head/sys/contrib/pf/net/pfvar.h 145836 2005-05-03 16:43:32Z mlaier $ */
2/* $OpenBSD: pfvar.h,v 1.213 2005/03/03 07:13:39 dhartmei 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#include <sys/param.h>
38#include <sys/types.h>
39#include <sys/queue.h>
40#include <sys/tree.h>
41
42#include <net/radix.h>
43#include <net/route.h>
44#ifdef __FreeBSD__
45#include <net/if_clone.h>
46#include <vm/uma.h>
47#else
48#include <netinet/ip_ipsp.h>
49#endif
50
51#ifdef __FreeBSD__
52#include <netinet/in.h>
53#endif
54
55#include <netinet/tcp_fsm.h>
56
57struct ip;
58#ifdef __FreeBSD__
59struct inpcb;
60#endif
61
62#define PF_TCPS_PROXY_SRC ((TCP_NSTATES)+0)
63#define PF_TCPS_PROXY_DST ((TCP_NSTATES)+1)
64
65enum { PF_INOUT, PF_IN, PF_OUT };
66enum { PF_LAN_EXT, PF_EXT_GWY, PF_ID };
67enum { PF_PASS, PF_DROP, PF_SCRUB, PF_NOSCRUB, PF_NAT, PF_NONAT,
68 PF_BINAT, PF_NOBINAT, PF_RDR, PF_NORDR, PF_SYNPROXY_DROP };
69enum { PF_RULESET_SCRUB, PF_RULESET_FILTER, PF_RULESET_NAT,
70 PF_RULESET_BINAT, PF_RULESET_RDR, PF_RULESET_MAX };
71enum { PF_OP_NONE, PF_OP_IRG, PF_OP_EQ, PF_OP_NE, PF_OP_LT,
72 PF_OP_LE, PF_OP_GT, PF_OP_GE, PF_OP_XRG, PF_OP_RRG };
73enum { PF_DEBUG_NONE, PF_DEBUG_URGENT, PF_DEBUG_MISC, PF_DEBUG_NOISY };
74enum { PF_CHANGE_NONE, PF_CHANGE_ADD_HEAD, PF_CHANGE_ADD_TAIL,
75 PF_CHANGE_ADD_BEFORE, PF_CHANGE_ADD_AFTER,
76 PF_CHANGE_REMOVE, PF_CHANGE_GET_TICKET };
77/*
78 * Note about PFTM_*: real indices into pf_rule.timeout[] come before
79 * PFTM_MAX, special cases afterwards. See pf_state_expires().
80 */
81enum { PFTM_TCP_FIRST_PACKET, PFTM_TCP_OPENING, PFTM_TCP_ESTABLISHED,
82 PFTM_TCP_CLOSING, PFTM_TCP_FIN_WAIT, PFTM_TCP_CLOSED,
83 PFTM_UDP_FIRST_PACKET, PFTM_UDP_SINGLE, PFTM_UDP_MULTIPLE,
84 PFTM_ICMP_FIRST_PACKET, PFTM_ICMP_ERROR_REPLY,
85 PFTM_OTHER_FIRST_PACKET, PFTM_OTHER_SINGLE,
86 PFTM_OTHER_MULTIPLE, PFTM_FRAG, PFTM_INTERVAL,
87 PFTM_ADAPTIVE_START, PFTM_ADAPTIVE_END, PFTM_SRC_NODE,
88 PFTM_TS_DIFF, PFTM_MAX, PFTM_PURGE, PFTM_UNTIL_PACKET };
89
90/* PFTM default values */
91#define PFTM_TCP_FIRST_PACKET_VAL 120 /* First TCP packet */
92#define PFTM_TCP_OPENING_VAL 30 /* No response yet */
93#define PFTM_TCP_ESTABLISHED_VAL 24*60*60/* Established */
94#define PFTM_TCP_CLOSING_VAL 15 * 60 /* Half closed */
95#define PFTM_TCP_FIN_WAIT_VAL 45 /* Got both FINs */
96#define PFTM_TCP_CLOSED_VAL 90 /* Got a RST */
97#define PFTM_UDP_FIRST_PACKET_VAL 60 /* First UDP packet */
98#define PFTM_UDP_SINGLE_VAL 30 /* Unidirectional */
99#define PFTM_UDP_MULTIPLE_VAL 60 /* Bidirectional */
100#define PFTM_ICMP_FIRST_PACKET_VAL 20 /* First ICMP packet */
101#define PFTM_ICMP_ERROR_REPLY_VAL 10 /* Got error response */
102#define PFTM_OTHER_FIRST_PACKET_VAL 60 /* First packet */
103#define PFTM_OTHER_SINGLE_VAL 30 /* Unidirectional */
104#define PFTM_OTHER_MULTIPLE_VAL 60 /* Bidirectional */
105#define PFTM_FRAG_VAL 30 /* Fragment expire */
106#define PFTM_INTERVAL_VAL 10 /* Expire interval */
107#define PFTM_SRC_NODE_VAL 0 /* Source tracking */
108#define PFTM_TS_DIFF_VAL 30 /* Allowed TS diff */
109
110enum { PF_NOPFROUTE, PF_FASTROUTE, PF_ROUTETO, PF_DUPTO, PF_REPLYTO };
111enum { PF_LIMIT_STATES, PF_LIMIT_SRC_NODES, PF_LIMIT_FRAGS, PF_LIMIT_MAX };
112#define PF_POOL_IDMASK 0x0f
113enum { PF_POOL_NONE, PF_POOL_BITMASK, PF_POOL_RANDOM,
114 PF_POOL_SRCHASH, PF_POOL_ROUNDROBIN };
115enum { PF_ADDR_ADDRMASK, PF_ADDR_NOROUTE, PF_ADDR_DYNIFTL,
116 PF_ADDR_TABLE, PF_ADDR_RTLABEL };
117#define PF_POOL_TYPEMASK 0x0f
118#define PF_POOL_STICKYADDR 0x20
119#define PF_WSCALE_FLAG 0x80
120#define PF_WSCALE_MASK 0x0f
121
122struct pf_addr {
123 union {
124 struct in_addr v4;
125 struct in6_addr v6;
126 u_int8_t addr8[16];
127 u_int16_t addr16[8];
128 u_int32_t addr32[4];
129 } pfa; /* 128-bit address */
130#define v4 pfa.v4
131#define v6 pfa.v6
132#define addr8 pfa.addr8
133#define addr16 pfa.addr16
134#define addr32 pfa.addr32
135};
136
137#define PF_TABLE_NAME_SIZE 32
138
139#define PFI_AFLAG_NETWORK 0x01
140#define PFI_AFLAG_BROADCAST 0x02
141#define PFI_AFLAG_PEER 0x04
142#define PFI_AFLAG_MODEMASK 0x07
143#define PFI_AFLAG_NOALIAS 0x08
144
145struct pf_addr_wrap {
146 union {
147 struct {
148 struct pf_addr addr;
149 struct pf_addr mask;
150 } a;
151 char ifname[IFNAMSIZ];
152 char tblname[PF_TABLE_NAME_SIZE];
153#ifdef __FreeBSD__
154#define RTLABEL_LEN 32
155#endif
156 char rtlabelname[RTLABEL_LEN];
157 u_int32_t rtlabel;
158 } v;
159 union {
160 struct pfi_dynaddr *dyn;
161 struct pfr_ktable *tbl;
162 int dyncnt;
163 int tblcnt;
164 } p;
165 u_int8_t type; /* PF_ADDR_* */
166 u_int8_t iflags; /* PFI_AFLAG_* */
167};
168
169#ifdef _KERNEL
170
171struct pfi_dynaddr {
172 struct pf_addr pfid_addr4;
173 struct pf_addr pfid_mask4;
174 struct pf_addr pfid_addr6;
175 struct pf_addr pfid_mask6;
176 struct pfr_ktable *pfid_kt;
177 struct pfi_kif *pfid_kif;
178 void *pfid_hook_cookie;
179 int pfid_net; /* optional mask, or 128 */
180 int pfid_acnt4; /* address count, IPv4 */
181 int pfid_acnt6; /* address count, IPv6 */
182 sa_family_t pfid_af; /* rule address family */
183 u_int8_t pfid_iflags; /* PFI_AFLAG_* */
184};
185
186/*
187 * Address manipulation macros
188 */
189
190#ifdef __FreeBSD__
191#define splsoftnet() splnet()
192
193#define HTONL(x) (x) = htonl((__uint32_t)(x))
194#define HTONS(x) (x) = htons((__uint16_t)(x))
195#define NTOHL(x) (x) = ntohl((__uint32_t)(x))
196#define NTOHS(x) (x) = ntohs((__uint16_t)(x))
197
198#define PF_NAME "pf"
199
200#define PR_NOWAIT M_NOWAIT
201#define pool_get(p, f) uma_zalloc(*(p), (f))
202#define pool_put(p, o) uma_zfree(*(p), (o))
203
204#define UMA_CREATE(var, type, desc) \
205 var = uma_zcreate(desc, sizeof(type), \
206 NULL, NULL, NULL, NULL, UMA_ALIGN_PTR, 0); \
207 if (var == NULL) break
208#define UMA_DESTROY(var) \
209 if(var) uma_zdestroy(var)
210
211extern struct mtx pf_task_mtx;
212
213#define PF_ASSERT(h) mtx_assert(&pf_task_mtx, (h))
214
215#define PF_LOCK() do { \
216 PF_ASSERT(MA_NOTOWNED); \
217 mtx_lock(&pf_task_mtx); \
218} while(0)
219#define PF_UNLOCK() do { \
220 PF_ASSERT(MA_OWNED); \
221 mtx_unlock(&pf_task_mtx); \
222} while(0)
223
224#define PF_COPYIN(uaddr, kaddr, len, r) do { \
225 PF_UNLOCK(); \
226 r = copyin((uaddr), (kaddr), (len)); \
227 PF_LOCK(); \
228} while(0)
229
230#define PF_COPYOUT(kaddr, uaddr, len, r) do { \
231 PF_UNLOCK(); \
232 r = copyout((kaddr), (uaddr), (len)); \
233 PF_LOCK(); \
234} while(0)
235
236extern void init_pf_mutex(void);
237extern void destroy_pf_mutex(void);
238
239#define PF_MODVER 1
240#define PFLOG_MODVER 1
241#define PFSYNC_MODVER 1
242
243#define PFLOG_MINVER 1
244#define PFLOG_PREFVER PFLOG_MODVER
245#define PFLOG_MAXVER 1
246#define PFSYNC_MINVER 1
247#define PFSYNC_PREFVER PFSYNC_MODVER
248#define PFSYNC_MAXVER 1
249
250/* prototyped for pf_subr.c */
251struct hook_desc {
252 TAILQ_ENTRY(hook_desc) hd_list;
253 void (*hd_fn)(void *);
254 void *hd_arg;
255};
256TAILQ_HEAD(hook_desc_head, hook_desc);
257
258void *hook_establish(struct hook_desc_head *, int, void (*)(void *), void *);
259void hook_disestablish(struct hook_desc_head *, void *);
260void dohooks(struct hook_desc_head *, int);
261
262#define HOOK_REMOVE 0x01
263#define HOOK_FREE 0x02
264#endif /* __FreeBSD__ */
265
266#ifdef INET
267#ifndef INET6
268#define PF_INET_ONLY
269#endif /* ! INET6 */
270#endif /* INET */
271
272#ifdef INET6
273#ifndef INET
274#define PF_INET6_ONLY
275#endif /* ! INET */
276#endif /* INET6 */
277
278#ifdef INET
279#ifdef INET6
280#define PF_INET_INET6
281#endif /* INET6 */
282#endif /* INET */
283
284#else
285
286#define PF_INET_INET6
287
288#endif /* _KERNEL */
289
290/* Both IPv4 and IPv6 */
291#ifdef PF_INET_INET6
292
293#define PF_AEQ(a, b, c) \
294 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \
295 ((a)->addr32[3] == (b)->addr32[3] && \
296 (a)->addr32[2] == (b)->addr32[2] && \
297 (a)->addr32[1] == (b)->addr32[1] && \
298 (a)->addr32[0] == (b)->addr32[0])) \
299
300#define PF_ANEQ(a, b, c) \
301 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \
302 ((a)->addr32[3] != (b)->addr32[3] || \
303 (a)->addr32[2] != (b)->addr32[2] || \
304 (a)->addr32[1] != (b)->addr32[1] || \
305 (a)->addr32[0] != (b)->addr32[0])) \
306
307#define PF_AZERO(a, c) \
308 ((c == AF_INET && !(a)->addr32[0]) || \
309 (!(a)->addr32[0] && !(a)->addr32[1] && \
310 !(a)->addr32[2] && !(a)->addr32[3] )) \
311
312#define PF_MATCHA(n, a, m, b, f) \
313 pf_match_addr(n, a, m, b, f)
314
315#define PF_ACPY(a, b, f) \
316 pf_addrcpy(a, b, f)
317
318#define PF_AINC(a, f) \
319 pf_addr_inc(a, f)
320
321#define PF_POOLMASK(a, b, c, d, f) \
322 pf_poolmask(a, b, c, d, f)
323
324#else
325
326/* Just IPv6 */
327
328#ifdef PF_INET6_ONLY
329
330#define PF_AEQ(a, b, c) \
331 ((a)->addr32[3] == (b)->addr32[3] && \
332 (a)->addr32[2] == (b)->addr32[2] && \
333 (a)->addr32[1] == (b)->addr32[1] && \
334 (a)->addr32[0] == (b)->addr32[0]) \
335
336#define PF_ANEQ(a, b, c) \
337 ((a)->addr32[3] != (b)->addr32[3] || \
338 (a)->addr32[2] != (b)->addr32[2] || \
339 (a)->addr32[1] != (b)->addr32[1] || \
340 (a)->addr32[0] != (b)->addr32[0]) \
341
342#define PF_AZERO(a, c) \
343 (!(a)->addr32[0] && \
344 !(a)->addr32[1] && \
345 !(a)->addr32[2] && \
346 !(a)->addr32[3] ) \
347
348#define PF_MATCHA(n, a, m, b, f) \
349 pf_match_addr(n, a, m, b, f)
350
351#define PF_ACPY(a, b, f) \
352 pf_addrcpy(a, b, f)
353
354#define PF_AINC(a, f) \
355 pf_addr_inc(a, f)
356
357#define PF_POOLMASK(a, b, c, d, f) \
358 pf_poolmask(a, b, c, d, f)
359
360#else
361
362/* Just IPv4 */
363#ifdef PF_INET_ONLY
364
365#define PF_AEQ(a, b, c) \
366 ((a)->addr32[0] == (b)->addr32[0])
367
368#define PF_ANEQ(a, b, c) \
369 ((a)->addr32[0] != (b)->addr32[0])
370
371#define PF_AZERO(a, c) \
372 (!(a)->addr32[0])
373
374#define PF_MATCHA(n, a, m, b, f) \
375 pf_match_addr(n, a, m, b, f)
376
377#define PF_ACPY(a, b, f) \
378 (a)->v4.s_addr = (b)->v4.s_addr
379
380#define PF_AINC(a, f) \
381 do { \
382 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \
383 } while (0)
384
385#define PF_POOLMASK(a, b, c, d, f) \
386 do { \
387 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \
388 (((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \
389 } while (0)
390
391#endif /* PF_INET_ONLY */
392#endif /* PF_INET6_ONLY */
393#endif /* PF_INET_INET6 */
394
395#define PF_MISMATCHAW(aw, x, af, neg) \
396 ( \
397 (((aw)->type == PF_ADDR_NOROUTE && \
398 pf_routable((x), (af))) || \
399 ((aw)->type == PF_ADDR_RTLABEL && \
400 !pf_rtlabel_match((x), (af), (aw))) || \
401 ((aw)->type == PF_ADDR_TABLE && \
402 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \
403 ((aw)->type == PF_ADDR_DYNIFTL && \
404 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \
405 ((aw)->type == PF_ADDR_ADDRMASK && \
406 !PF_AZERO(&(aw)->v.a.mask, (af)) && \
407 !PF_MATCHA(0, &(aw)->v.a.addr, \
408 &(aw)->v.a.mask, (x), (af)))) != \
409 (neg) \
410 )
411
412struct pf_rule_uid {
413 uid_t uid[2];
414 u_int8_t op;
415};
416
417struct pf_rule_gid {
418 uid_t gid[2];
419 u_int8_t op;
420};
421
422struct pf_rule_addr {
423 struct pf_addr_wrap addr;
424 u_int16_t port[2];
425 u_int8_t neg;
426 u_int8_t port_op;
427};
428
429struct pf_pooladdr {
430 struct pf_addr_wrap addr;
431 TAILQ_ENTRY(pf_pooladdr) entries;
432 char ifname[IFNAMSIZ];
433 struct pfi_kif *kif;
434};
435
436TAILQ_HEAD(pf_palist, pf_pooladdr);
437
438struct pf_poolhashkey {
439 union {
440 u_int8_t key8[16];
441 u_int16_t key16[8];
442 u_int32_t key32[4];
443 } pfk; /* 128-bit hash key */
444#define key8 pfk.key8
445#define key16 pfk.key16
446#define key32 pfk.key32
447};
448
449struct pf_pool {
450 struct pf_palist list;
451 struct pf_pooladdr *cur;
452 struct pf_poolhashkey key;
453 struct pf_addr counter;
454 int tblidx;
455 u_int16_t proxy_port[2];
456 u_int8_t port_op;
457 u_int8_t opts;
458};
459
460
461/* A packed Operating System description for fingerprinting */
462typedef u_int32_t pf_osfp_t;
463#define PF_OSFP_ANY ((pf_osfp_t)0)
464#define PF_OSFP_UNKNOWN ((pf_osfp_t)-1)
465#define PF_OSFP_NOMATCH ((pf_osfp_t)-2)
466
467struct pf_osfp_entry {
468 SLIST_ENTRY(pf_osfp_entry) fp_entry;
469 pf_osfp_t fp_os;
470 int fp_enflags;
471#define PF_OSFP_EXPANDED 0x001 /* expanded entry */
472#define PF_OSFP_GENERIC 0x002 /* generic signature */
473#define PF_OSFP_NODETAIL 0x004 /* no p0f details */
474#define PF_OSFP_LEN 32
475 char fp_class_nm[PF_OSFP_LEN];
476 char fp_version_nm[PF_OSFP_LEN];
477 char fp_subtype_nm[PF_OSFP_LEN];
478};
479#define PF_OSFP_ENTRY_EQ(a, b) \
480 ((a)->fp_os == (b)->fp_os && \
481 memcmp((a)->fp_class_nm, (b)->fp_class_nm, PF_OSFP_LEN) == 0 && \
482 memcmp((a)->fp_version_nm, (b)->fp_version_nm, PF_OSFP_LEN) == 0 && \
483 memcmp((a)->fp_subtype_nm, (b)->fp_subtype_nm, PF_OSFP_LEN) == 0)
484
485/* handle pf_osfp_t packing */
486#define _FP_RESERVED_BIT 1 /* For the special negative #defines */
487#define _FP_UNUSED_BITS 1
488#define _FP_CLASS_BITS 10 /* OS Class (Windows, Linux) */
489#define _FP_VERSION_BITS 10 /* OS version (95, 98, NT, 2.4.54, 3.2) */
490#define _FP_SUBTYPE_BITS 10 /* patch level (NT SP4, SP3, ECN patch) */
491#define PF_OSFP_UNPACK(osfp, class, version, subtype) do { \
492 (class) = ((osfp) >> (_FP_VERSION_BITS+_FP_SUBTYPE_BITS)) & \
493 ((1 << _FP_CLASS_BITS) - 1); \
494 (version) = ((osfp) >> _FP_SUBTYPE_BITS) & \
495 ((1 << _FP_VERSION_BITS) - 1);\
496 (subtype) = (osfp) & ((1 << _FP_SUBTYPE_BITS) - 1); \
497} while(0)
498#define PF_OSFP_PACK(osfp, class, version, subtype) do { \
499 (osfp) = ((class) & ((1 << _FP_CLASS_BITS) - 1)) << (_FP_VERSION_BITS \
500 + _FP_SUBTYPE_BITS); \
501 (osfp) |= ((version) & ((1 << _FP_VERSION_BITS) - 1)) << \
502 _FP_SUBTYPE_BITS; \
503 (osfp) |= (subtype) & ((1 << _FP_SUBTYPE_BITS) - 1); \
504} while(0)
505
506/* the fingerprint of an OSes TCP SYN packet */
507typedef u_int64_t pf_tcpopts_t;
508struct pf_os_fingerprint {
509 SLIST_HEAD(pf_osfp_enlist, pf_osfp_entry) fp_oses; /* list of matches */
510 pf_tcpopts_t fp_tcpopts; /* packed TCP options */
511 u_int16_t fp_wsize; /* TCP window size */
512 u_int16_t fp_psize; /* ip->ip_len */
513 u_int16_t fp_mss; /* TCP MSS */
514 u_int16_t fp_flags;
515#define PF_OSFP_WSIZE_MOD 0x0001 /* Window modulus */
516#define PF_OSFP_WSIZE_DC 0x0002 /* Window don't care */
517#define PF_OSFP_WSIZE_MSS 0x0004 /* Window multiple of MSS */
518#define PF_OSFP_WSIZE_MTU 0x0008 /* Window multiple of MTU */
519#define PF_OSFP_PSIZE_MOD 0x0010 /* packet size modulus */
520#define PF_OSFP_PSIZE_DC 0x0020 /* packet size don't care */
521#define PF_OSFP_WSCALE 0x0040 /* TCP window scaling */
522#define PF_OSFP_WSCALE_MOD 0x0080 /* TCP window scale modulus */
523#define PF_OSFP_WSCALE_DC 0x0100 /* TCP window scale dont-care */
524#define PF_OSFP_MSS 0x0200 /* TCP MSS */
525#define PF_OSFP_MSS_MOD 0x0400 /* TCP MSS modulus */
526#define PF_OSFP_MSS_DC 0x0800 /* TCP MSS dont-care */
527#define PF_OSFP_DF 0x1000 /* IPv4 don't fragment bit */
528#define PF_OSFP_TS0 0x2000 /* Zero timestamp */
529 u_int8_t fp_optcnt; /* TCP option count */
530 u_int8_t fp_wscale; /* TCP window scaling */
531 u_int8_t fp_ttl; /* IPv4 TTL */
532#define PF_OSFP_MAXTTL_OFFSET 40
533/* TCP options packing */
534#define PF_OSFP_TCPOPT_NOP 0x0 /* TCP NOP option */
535#define PF_OSFP_TCPOPT_WSCALE 0x1 /* TCP window scaling option */
536#define PF_OSFP_TCPOPT_MSS 0x2 /* TCP max segment size opt */
537#define PF_OSFP_TCPOPT_SACK 0x3 /* TCP SACK OK option */
538#define PF_OSFP_TCPOPT_TS 0x4 /* TCP timestamp option */
539#define PF_OSFP_TCPOPT_BITS 3 /* bits used by each option */
540#define PF_OSFP_MAX_OPTS \
541 (sizeof(((struct pf_os_fingerprint *)0)->fp_tcpopts) * 8) \
542 / PF_OSFP_TCPOPT_BITS
543
544 SLIST_ENTRY(pf_os_fingerprint) fp_next;
545};
546
547struct pf_osfp_ioctl {
548 struct pf_osfp_entry fp_os;
549 pf_tcpopts_t fp_tcpopts; /* packed TCP options */
550 u_int16_t fp_wsize; /* TCP window size */
551 u_int16_t fp_psize; /* ip->ip_len */
552 u_int16_t fp_mss; /* TCP MSS */
553 u_int16_t fp_flags;
554 u_int8_t fp_optcnt; /* TCP option count */
555 u_int8_t fp_wscale; /* TCP window scaling */
556 u_int8_t fp_ttl; /* IPv4 TTL */
557
558 int fp_getnum; /* DIOCOSFPGET number */
559};
560
561
562union pf_rule_ptr {
563 struct pf_rule *ptr;
564 u_int32_t nr;
565};
566
567#define PF_ANCHOR_NAME_SIZE 64
568
569struct pf_rule {
570 struct pf_rule_addr src;
571 struct pf_rule_addr dst;
572#define PF_SKIP_IFP 0
573#define PF_SKIP_DIR 1
574#define PF_SKIP_AF 2
575#define PF_SKIP_PROTO 3
576#define PF_SKIP_SRC_ADDR 4
577#define PF_SKIP_SRC_PORT 5
578#define PF_SKIP_DST_ADDR 6
579#define PF_SKIP_DST_PORT 7
580#define PF_SKIP_COUNT 8
581 union pf_rule_ptr skip[PF_SKIP_COUNT];
582#define PF_RULE_LABEL_SIZE 64
583 char label[PF_RULE_LABEL_SIZE];
584#define PF_QNAME_SIZE 16
585 char ifname[IFNAMSIZ];
586 char qname[PF_QNAME_SIZE];
587 char pqname[PF_QNAME_SIZE];
588#define PF_TAG_NAME_SIZE 16
589 char tagname[PF_TAG_NAME_SIZE];
590 char match_tagname[PF_TAG_NAME_SIZE];
591
592 char overload_tblname[PF_TABLE_NAME_SIZE];
593
594 TAILQ_ENTRY(pf_rule) entries;
595 struct pf_pool rpool;
596
597 u_int64_t evaluations;
598 u_int64_t packets;
599 u_int64_t bytes;
600
601 struct pfi_kif *kif;
602 struct pf_anchor *anchor;
603 struct pfr_ktable *overload_tbl;
604
605 pf_osfp_t os_fingerprint;
606
607 u_int32_t timeout[PFTM_MAX];
608 u_int32_t states;
609 u_int32_t max_states;
610 u_int32_t src_nodes;
611 u_int32_t max_src_nodes;
612 u_int32_t max_src_states;
613 u_int32_t max_src_conn;
614 struct {
615 u_int32_t limit;
616 u_int32_t seconds;
617 } max_src_conn_rate;
618 u_int32_t qid;
619 u_int32_t pqid;
620 u_int32_t rt_listid;
621 u_int32_t nr;
622 u_int32_t prob;
623
624 u_int16_t return_icmp;
625 u_int16_t return_icmp6;
626 u_int16_t max_mss;
627 u_int16_t tag;
628 u_int16_t match_tag;
629
630 struct pf_rule_uid uid;
631 struct pf_rule_gid gid;
632
633 u_int32_t rule_flag;
634 u_int8_t action;
635 u_int8_t direction;
636 u_int8_t log;
637 u_int8_t quick;
638 u_int8_t ifnot;
639 u_int8_t match_tag_not;
640 u_int8_t natpass;
641
642#define PF_STATE_NORMAL 0x1
643#define PF_STATE_MODULATE 0x2
644#define PF_STATE_SYNPROXY 0x3
645 u_int8_t keep_state;
646 sa_family_t af;
647 u_int8_t proto;
648 u_int8_t type;
649 u_int8_t code;
650 u_int8_t flags;
651 u_int8_t flagset;
652 u_int8_t min_ttl;
653 u_int8_t allow_opts;
654 u_int8_t rt;
655 u_int8_t return_ttl;
656 u_int8_t tos;
657 u_int8_t anchor_relative;
658 u_int8_t anchor_wildcard;
659
660#define PF_FLUSH 0x01
661#define PF_FLUSH_GLOBAL 0x02
662 u_int8_t flush;
663};
664
665/* rule flags */
666#define PFRULE_DROP 0x0000
667#define PFRULE_RETURNRST 0x0001
668#define PFRULE_FRAGMENT 0x0002
669#define PFRULE_RETURNICMP 0x0004
670#define PFRULE_RETURN 0x0008
671#define PFRULE_NOSYNC 0x0010
672#define PFRULE_SRCTRACK 0x0020 /* track source states */
673#define PFRULE_RULESRCTRACK 0x0040 /* per rule */
674
675/* scrub flags */
676#define PFRULE_NODF 0x0100
677#define PFRULE_FRAGCROP 0x0200 /* non-buffering frag cache */
678#define PFRULE_FRAGDROP 0x0400 /* drop funny fragments */
679#define PFRULE_RANDOMID 0x0800
680#define PFRULE_REASSEMBLE_TCP 0x1000
681
682/* rule flags again */
683#define PFRULE_IFBOUND 0x00010000 /* if-bound */
684#define PFRULE_GRBOUND 0x00020000 /* group-bound */
685
686#define PFSTATE_HIWAT 10000 /* default state table size */
687
688
689struct pf_threshold {
690 u_int32_t limit;
691#define PF_THRESHOLD_MULT 1000
692#define PF_THRESHOLD_MAX 0xffffffff / PF_THRESHOLD_MULT
693 u_int32_t seconds;
694 u_int32_t count;
695 u_int32_t last;
696};
697
698struct pf_src_node {
699 RB_ENTRY(pf_src_node) entry;
700 struct pf_addr addr;
701 struct pf_addr raddr;
702 union pf_rule_ptr rule;
703 struct pfi_kif *kif;
704 u_int32_t bytes;
705 u_int32_t packets;
706 u_int32_t states;
707 u_int32_t conn;
708 struct pf_threshold conn_rate;
709 u_int32_t creation;
710 u_int32_t expire;
711 sa_family_t af;
712 u_int8_t ruletype;
713};
714
715#define PFSNODE_HIWAT 10000 /* default source node table size */
716
717struct pf_state_scrub {
718 struct timeval pfss_last; /* time received last packet */
719 u_int32_t pfss_tsecr; /* last echoed timestamp */
720 u_int32_t pfss_tsval; /* largest timestamp */
721 u_int32_t pfss_tsval0; /* original timestamp */
722 u_int16_t pfss_flags;
723#define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */
724#define PFSS_PAWS 0x0010 /* stricter PAWS checks */
725#define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */
726#define PFSS_DATA_TS 0x0040 /* timestamp on data packets */
727#define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */
728 u_int8_t pfss_ttl; /* stashed TTL */
729 u_int8_t pad;
730 u_int32_t pfss_ts_mod; /* timestamp modulation */
731};
732
733struct pf_state_host {
734 struct pf_addr addr;
735 u_int16_t port;
736 u_int16_t pad;
737};
738
739struct pf_state_peer {
740 u_int32_t seqlo; /* Max sequence number sent */
741 u_int32_t seqhi; /* Max the other end ACKd + win */
742 u_int32_t seqdiff; /* Sequence number modulator */
743 u_int16_t max_win; /* largest window (pre scaling) */
744 u_int8_t state; /* active state level */
745 u_int8_t wscale; /* window scaling factor */
746 u_int16_t mss; /* Maximum segment size option */
747 struct pf_state_scrub *scrub; /* state is scrubbed */
748};
749
750TAILQ_HEAD(pf_state_queue, pf_state);
751
752struct pf_state {
753 u_int64_t id;
754 union {
755 struct {
756 RB_ENTRY(pf_state) entry_lan_ext;
757 RB_ENTRY(pf_state) entry_ext_gwy;
758 RB_ENTRY(pf_state) entry_id;
759 TAILQ_ENTRY(pf_state) entry_updates;
760 struct pfi_kif *kif;
761 } s;
762 char ifname[IFNAMSIZ];
763 } u;
764 struct pf_state_host lan;
765 struct pf_state_host gwy;
766 struct pf_state_host ext;
767 struct pf_state_peer src;
768 struct pf_state_peer dst;
769 union pf_rule_ptr rule;
770 union pf_rule_ptr anchor;
771 union pf_rule_ptr nat_rule;
772 struct pf_addr rt_addr;
773 struct pfi_kif *rt_kif;
774 struct pf_src_node *src_node;
775 struct pf_src_node *nat_src_node;
776 u_int32_t creation;
777 u_int32_t expire;
778 u_int32_t pfsync_time;
779 u_int32_t packets[2];
780 u_int32_t bytes[2];
781 u_int32_t creatorid;
782 u_int16_t tag;
783 sa_family_t af;
784 u_int8_t proto;
785 u_int8_t direction;
786 u_int8_t log;
787 u_int8_t allow_opts;
788 u_int8_t timeout;
789 u_int8_t sync_flags;
790#define PFSTATE_NOSYNC 0x01
791#define PFSTATE_FROMSYNC 0x02
792#define PFSTATE_STALE 0x04
793 u_int8_t pad;
794};
795
796TAILQ_HEAD(pf_rulequeue, pf_rule);
797
798struct pf_anchor;
799
800struct pf_ruleset {
801 struct {
802 struct pf_rulequeue queues[2];
803 struct {
804 struct pf_rulequeue *ptr;
805 u_int32_t ticket;
806 int open;
807 } active, inactive;
808 } rules[PF_RULESET_MAX];
809 struct pf_anchor *anchor;
810 u_int32_t tticket;
811 int tables;
812 int topen;
813};
814
815RB_HEAD(pf_anchor_global, pf_anchor);
816RB_HEAD(pf_anchor_node, pf_anchor);
817struct pf_anchor {
818 RB_ENTRY(pf_anchor) entry_global;
819 RB_ENTRY(pf_anchor) entry_node;
820 struct pf_anchor *parent;
821 struct pf_anchor_node children;
822 char name[PF_ANCHOR_NAME_SIZE];
823 char path[MAXPATHLEN];
824 struct pf_ruleset ruleset;
825 int refcnt; /* anchor rules */
826};
827RB_PROTOTYPE(pf_anchor_global, pf_anchor, entry_global, pf_anchor_compare);
828RB_PROTOTYPE(pf_anchor_node, pf_anchor, entry_node, pf_anchor_compare);
829
830#define PF_RESERVED_ANCHOR "_pf"
831
832#define PFR_TFLAG_PERSIST 0x00000001
833#define PFR_TFLAG_CONST 0x00000002
834#define PFR_TFLAG_ACTIVE 0x00000004
835#define PFR_TFLAG_INACTIVE 0x00000008
836#define PFR_TFLAG_REFERENCED 0x00000010
837#define PFR_TFLAG_REFDANCHOR 0x00000020
838#define PFR_TFLAG_USRMASK 0x00000003
839#define PFR_TFLAG_SETMASK 0x0000003C
840#define PFR_TFLAG_ALLMASK 0x0000003F
841
842struct pfr_table {
843 char pfrt_anchor[MAXPATHLEN];
844 char pfrt_name[PF_TABLE_NAME_SIZE];
845 u_int32_t pfrt_flags;
846 u_int8_t pfrt_fback;
847};
848
849enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED,
850 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE,
851 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_MAX };
852
853struct pfr_addr {
854 union {
855 struct in_addr _pfra_ip4addr;
856 struct in6_addr _pfra_ip6addr;
857 } pfra_u;
858 u_int8_t pfra_af;
859 u_int8_t pfra_net;
860 u_int8_t pfra_not;
861 u_int8_t pfra_fback;
862};
863#define pfra_ip4addr pfra_u._pfra_ip4addr
864#define pfra_ip6addr pfra_u._pfra_ip6addr
865
866enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX };
867enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX };
868#define PFR_OP_XPASS PFR_OP_ADDR_MAX
869
870struct pfr_astats {
871 struct pfr_addr pfras_a;
872 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
873 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
874 long pfras_tzero;
875};
876
877enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX };
878
879struct pfr_tstats {
880 struct pfr_table pfrts_t;
881 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
882 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
883 u_int64_t pfrts_match;
884 u_int64_t pfrts_nomatch;
885 long pfrts_tzero;
886 int pfrts_cnt;
887 int pfrts_refcnt[PFR_REFCNT_MAX];
888};
889#define pfrts_name pfrts_t.pfrt_name
890#define pfrts_flags pfrts_t.pfrt_flags
891
892#ifndef _SOCKADDR_UNION_DEFINED
893#define _SOCKADDR_UNION_DEFINED
894union sockaddr_union {
895 struct sockaddr sa;
896 struct sockaddr_in sin;
897 struct sockaddr_in6 sin6;
898};
899#endif /* _SOCKADDR_UNION_DEFINED */
900
901SLIST_HEAD(pfr_kentryworkq, pfr_kentry);
902struct pfr_kentry {
903 struct radix_node pfrke_node[2];
904 union sockaddr_union pfrke_sa;
905 u_int64_t pfrke_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
906 u_int64_t pfrke_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
907 SLIST_ENTRY(pfr_kentry) pfrke_workq;
908 long pfrke_tzero;
909 u_int8_t pfrke_af;
910 u_int8_t pfrke_net;
911 u_int8_t pfrke_not;
912 u_int8_t pfrke_mark;
913 u_int8_t pfrke_intrpool;
914};
915
916SLIST_HEAD(pfr_ktableworkq, pfr_ktable);
917RB_HEAD(pfr_ktablehead, pfr_ktable);
918struct pfr_ktable {
919 struct pfr_tstats pfrkt_ts;
920 RB_ENTRY(pfr_ktable) pfrkt_tree;
921 SLIST_ENTRY(pfr_ktable) pfrkt_workq;
922 struct radix_node_head *pfrkt_ip4;
923 struct radix_node_head *pfrkt_ip6;
924 struct pfr_ktable *pfrkt_shadow;
925 struct pfr_ktable *pfrkt_root;
926 struct pf_ruleset *pfrkt_rs;
927 long pfrkt_larg;
928 int pfrkt_nflags;
929};
930#define pfrkt_t pfrkt_ts.pfrts_t
931#define pfrkt_name pfrkt_t.pfrt_name
932#define pfrkt_anchor pfrkt_t.pfrt_anchor
933#define pfrkt_ruleset pfrkt_t.pfrt_ruleset
934#define pfrkt_flags pfrkt_t.pfrt_flags
935#define pfrkt_cnt pfrkt_ts.pfrts_cnt
936#define pfrkt_refcnt pfrkt_ts.pfrts_refcnt
937#define pfrkt_packets pfrkt_ts.pfrts_packets
938#define pfrkt_bytes pfrkt_ts.pfrts_bytes
939#define pfrkt_match pfrkt_ts.pfrts_match
940#define pfrkt_nomatch pfrkt_ts.pfrts_nomatch
941#define pfrkt_tzero pfrkt_ts.pfrts_tzero
942
943RB_HEAD(pf_state_tree_lan_ext, pf_state);
944RB_PROTOTYPE(pf_state_tree_lan_ext, pf_state,
945 u.s.entry_lan_ext, pf_state_compare_lan_ext);
946
947RB_HEAD(pf_state_tree_ext_gwy, pf_state);
948RB_PROTOTYPE(pf_state_tree_ext_gwy, pf_state,
949 u.s.entry_ext_gwy, pf_state_compare_ext_gwy);
950
951struct pfi_if {
952 char pfif_name[IFNAMSIZ];
953 u_int64_t pfif_packets[2][2][2];
954 u_int64_t pfif_bytes[2][2][2];
955 u_int64_t pfif_addcnt;
956 u_int64_t pfif_delcnt;
957 long pfif_tzero;
958 int pfif_states;
959 int pfif_rules;
960 int pfif_flags;
961};
962
963TAILQ_HEAD(pfi_grouphead, pfi_kif);
964TAILQ_HEAD(pfi_statehead, pfi_kif);
965RB_HEAD(pfi_ifhead, pfi_kif);
966struct pfi_kif {
967 struct pfi_if pfik_if;
968 RB_ENTRY(pfi_kif) pfik_tree;
969 struct pf_state_tree_lan_ext pfik_lan_ext;
970 struct pf_state_tree_ext_gwy pfik_ext_gwy;
971 struct pfi_grouphead pfik_grouphead;
972 TAILQ_ENTRY(pfi_kif) pfik_instances;
973 TAILQ_ENTRY(pfi_kif) pfik_w_states;
974 struct hook_desc_head *pfik_ah_head;
975 void *pfik_ah_cookie;
976 struct pfi_kif *pfik_parent;
977 struct ifnet *pfik_ifp;
978 int pfik_states;
979 int pfik_rules;
980};
981#define pfik_name pfik_if.pfif_name
982#define pfik_packets pfik_if.pfif_packets
983#define pfik_bytes pfik_if.pfif_bytes
984#define pfik_tzero pfik_if.pfif_tzero
985#define pfik_flags pfik_if.pfif_flags
986#define pfik_addcnt pfik_if.pfif_addcnt
987#define pfik_delcnt pfik_if.pfif_delcnt
988#define pfik_states pfik_if.pfif_states
989#define pfik_rules pfik_if.pfif_rules
990
991#define PFI_IFLAG_GROUP 0x0001 /* group of interfaces */
992#define PFI_IFLAG_INSTANCE 0x0002 /* single instance */
993#define PFI_IFLAG_CLONABLE 0x0010 /* clonable group */
994#define PFI_IFLAG_DYNAMIC 0x0020 /* dynamic group */
995#define PFI_IFLAG_ATTACHED 0x0040 /* interface attached */
996#define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */
997#define PFI_IFLAG_SETABLE_MASK 0x0100 /* setable via DIOC{SET,CLR}IFFLAG */
998#define PFI_IFLAG_PLACEHOLDER 0x8000 /* placeholder group/interface */
999
1000struct pf_pdesc {
1001 u_int64_t tot_len; /* Make Mickey money */
1002 union {
1003 struct tcphdr *tcp;
1004 struct udphdr *udp;
1005 struct icmp *icmp;
1006#ifdef INET6
1007 struct icmp6_hdr *icmp6;
1008#endif /* INET6 */
1009 void *any;
1010 } hdr;
1011 struct pf_addr baddr; /* address before translation */
1012 struct pf_addr naddr; /* address after translation */
1013 struct pf_rule *nat_rule; /* nat/rdr rule applied to packet */
1014 struct pf_addr *src;
1015 struct pf_addr *dst;
1016 struct ether_header
1017 *eh;
1018 u_int16_t *ip_sum;
1019 u_int32_t p_len; /* total length of payload */
1020 u_int16_t flags; /* Let SCRUB trigger behavior in
1021 * state code. Easier than tags */
1022#define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */
1023#define PFDESC_IP_REAS 0x0002 /* IP frags would've been reassembled */
1024 sa_family_t af;
1025 u_int8_t proto;
1026 u_int8_t tos;
1027};
1028
1029/* flags for RDR options */
1030#define PF_DPORT_RANGE 0x01 /* Dest port uses range */
1031#define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */
1032
1033/* Reasons code for passing/dropping a packet */
1034#define PFRES_MATCH 0 /* Explicit match of a rule */
1035#define PFRES_BADOFF 1 /* Bad offset for pull_hdr */
1036#define PFRES_FRAG 2 /* Dropping following fragment */
1037#define PFRES_SHORT 3 /* Dropping short packet */
1038#define PFRES_NORM 4 /* Dropping by normalizer */
1039#define PFRES_MEMORY 5 /* Dropped due to lacking mem */
1040#define PFRES_TS 6 /* Bad TCP Timestamp (RFC1323) */
1041#define PFRES_CONGEST 7 /* Congestion (of ipintrq) */
1042#define PFRES_IPOPTIONS 8 /* IP option */
1043#define PFRES_PROTCKSUM 9 /* Protocol checksum invalid */
1044#define PFRES_BADSTATE 10 /* State mismatch */
1045#define PFRES_STATEINS 11 /* State insertion failure */
1046#define PFRES_MAXSTATES 12 /* State limit */
1047#define PFRES_SRCLIMIT 13 /* Source node/conn limit */
1048#define PFRES_SYNPROXY 14 /* SYN proxy */
1049#define PFRES_MAX 15 /* total+1 */
1050
1051#define PFRES_NAMES { \
1052 "match", \
1053 "bad-offset", \
1054 "fragment", \
1055 "short", \
1056 "normalize", \
1057 "memory", \
1058 "bad-timestamp", \
1059 "congestion", \
1060 "ip-option", \
1061 "proto-cksum", \
1062 "state-mismatch", \
1063 "state-insert", \
1064 "state-limit", \
1065 "src-limit", \
1066 "synproxy", \
1067 NULL \
1068}
1069
1070/* Counters for other things we want to keep track of */
1071#define LCNT_STATES 0 /* states */
1072#define LCNT_SRCSTATES 1 /* max-src-states */
1073#define LCNT_SRCNODES 2 /* max-src-nodes */
1074#define LCNT_SRCCONN 3 /* max-src-conn */
1075#define LCNT_SRCCONNRATE 4 /* max-src-conn-rate */
1076#define LCNT_OVERLOAD_TABLE 5 /* entry added to overload table */
1077#define LCNT_OVERLOAD_FLUSH 6 /* state entries flushed */
1078#define LCNT_MAX 7 /* total+1 */
1079
1080#define LCNT_NAMES { \
1081 "max states per rule", \
1082 "max-src-states", \
1083 "max-src-nodes", \
1084 "max-src-conn", \
1085 "max-src-conn-rate", \
1086 "overload table insertion", \
1087 "overload flush states", \
1088 NULL \
1089}
1090
1091/* UDP state enumeration */
1092#define PFUDPS_NO_TRAFFIC 0
1093#define PFUDPS_SINGLE 1
1094#define PFUDPS_MULTIPLE 2
1095
1096#define PFUDPS_NSTATES 3 /* number of state levels */
1097
1098#define PFUDPS_NAMES { \
1099 "NO_TRAFFIC", \
1100 "SINGLE", \
1101 "MULTIPLE", \
1102 NULL \
1103}
1104
1105/* Other protocol state enumeration */
1106#define PFOTHERS_NO_TRAFFIC 0
1107#define PFOTHERS_SINGLE 1
1108#define PFOTHERS_MULTIPLE 2
1109
1110#define PFOTHERS_NSTATES 3 /* number of state levels */
1111
1112#define PFOTHERS_NAMES { \
1113 "NO_TRAFFIC", \
1114 "SINGLE", \
1115 "MULTIPLE", \
1116 NULL \
1117}
1118
1119#define FCNT_STATE_SEARCH 0
1120#define FCNT_STATE_INSERT 1
1121#define FCNT_STATE_REMOVALS 2
1122#define FCNT_MAX 3
1123
1124#define SCNT_SRC_NODE_SEARCH 0
1125#define SCNT_SRC_NODE_INSERT 1
1126#define SCNT_SRC_NODE_REMOVALS 2
1127#define SCNT_MAX 3
1128
1129#define ACTION_SET(a, x) \
1130 do { \
1131 if ((a) != NULL) \
1132 *(a) = (x); \
1133 } while (0)
1134
1135#define REASON_SET(a, x) \
1136 do { \
1137 if ((a) != NULL) \
1138 *(a) = (x); \
1139 if (x < PFRES_MAX) \
1140 pf_status.counters[x]++; \
1141 } while (0)
1142
1143struct pf_status {
1144 u_int64_t counters[PFRES_MAX];
1145 u_int64_t lcounters[LCNT_MAX]; /* limit counters */
1146 u_int64_t fcounters[FCNT_MAX];
1147 u_int64_t scounters[SCNT_MAX];
1148 u_int64_t pcounters[2][2][3];
1149 u_int64_t bcounters[2][2];
1150 u_int64_t stateid;
1151 u_int32_t running;
1152 u_int32_t states;
1153 u_int32_t src_nodes;
1154 u_int32_t since;
1155 u_int32_t debug;
1156 u_int32_t hostid;
1157 char ifname[IFNAMSIZ];
1158};
1159
1160struct cbq_opts {
1161 u_int minburst;
1162 u_int maxburst;
1163 u_int pktsize;
1164 u_int maxpktsize;
1165 u_int ns_per_byte;
1166 u_int maxidle;
1167 int minidle;
1168 u_int offtime;
1169 int flags;
1170};
1171
1172struct priq_opts {
1173 int flags;
1174};
1175
1176struct hfsc_opts {
1177 /* real-time service curve */
1178 u_int rtsc_m1; /* slope of the 1st segment in bps */
1179 u_int rtsc_d; /* the x-projection of m1 in msec */
1180 u_int rtsc_m2; /* slope of the 2nd segment in bps */
1181 /* link-sharing service curve */
1182 u_int lssc_m1;
1183 u_int lssc_d;
1184 u_int lssc_m2;
1185 /* upper-limit service curve */
1186 u_int ulsc_m1;
1187 u_int ulsc_d;
1188 u_int ulsc_m2;
1189 int flags;
1190};
1191
1192struct pf_altq {
1193 char ifname[IFNAMSIZ];
1194
1195 void *altq_disc; /* discipline-specific state */
1196 TAILQ_ENTRY(pf_altq) entries;
1197
1198 /* scheduler spec */
1199 u_int8_t scheduler; /* scheduler type */
1200 u_int16_t tbrsize; /* tokenbucket regulator size */
1201 u_int32_t ifbandwidth; /* interface bandwidth */
1202
1203 /* queue spec */
1204 char qname[PF_QNAME_SIZE]; /* queue name */
1205 char parent[PF_QNAME_SIZE]; /* parent name */
1206 u_int32_t parent_qid; /* parent queue id */
1207 u_int32_t bandwidth; /* queue bandwidth */
1208 u_int8_t priority; /* priority */
1209 u_int16_t qlimit; /* queue size limit */
1210 u_int16_t flags; /* misc flags */
1211 union {
1212 struct cbq_opts cbq_opts;
1213 struct priq_opts priq_opts;
1214 struct hfsc_opts hfsc_opts;
1215 } pq_u;
1216
1217 u_int32_t qid; /* return value */
1218};
1219
1220struct pf_tag {
1221 u_int16_t tag; /* tag id */
1222};
1223
1224struct pf_tagname {
1225 TAILQ_ENTRY(pf_tagname) entries;
1226 char name[PF_TAG_NAME_SIZE];
1227 u_int16_t tag;
1228 int ref;
1229};
1230
1231#define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */
1232#define PFFRAG_FRAG_HIWAT 1000 /* Number of fragmented packets */
1233#define PFFRAG_FRCENT_HIWAT 50000 /* Number of fragment cache entries */
1234#define PFFRAG_FRCACHE_HIWAT 10000 /* Number of fragment descriptors */
1235
1236/*
1237 * ioctl parameter structures
1238 */
1239
1240struct pfioc_pooladdr {
1241 u_int32_t action;
1242 u_int32_t ticket;
1243 u_int32_t nr;
1244 u_int32_t r_num;
1245 u_int8_t r_action;
1246 u_int8_t r_last;
1247 u_int8_t af;
1248 char anchor[MAXPATHLEN];
1249 struct pf_pooladdr addr;
1250};
1251
1252struct pfioc_rule {
1253 u_int32_t action;
1254 u_int32_t ticket;
1255 u_int32_t pool_ticket;
1256 u_int32_t nr;
1257 char anchor[MAXPATHLEN];
1258 char anchor_call[MAXPATHLEN];
1259 struct pf_rule rule;
1260};
1261
1262struct pfioc_natlook {
1263 struct pf_addr saddr;
1264 struct pf_addr daddr;
1265 struct pf_addr rsaddr;
1266 struct pf_addr rdaddr;
1267 u_int16_t sport;
1268 u_int16_t dport;
1269 u_int16_t rsport;
1270 u_int16_t rdport;
1271 sa_family_t af;
1272 u_int8_t proto;
1273 u_int8_t direction;
1274};
1275
1276struct pfioc_state {
1277 u_int32_t nr;
1278 struct pf_state state;
1279};
1280
1281struct pfioc_state_kill {
1282 /* XXX returns the number of states killed in psk_af */
1283 sa_family_t psk_af;
1284 int psk_proto;
1285 struct pf_rule_addr psk_src;
1286 struct pf_rule_addr psk_dst;
1287 char psk_ifname[IFNAMSIZ];
1288};
1289
1290struct pfioc_states {
1291 int ps_len;
1292 union {
1293 caddr_t psu_buf;
1294 struct pf_state *psu_states;
1295 } ps_u;
1296#define ps_buf ps_u.psu_buf
1297#define ps_states ps_u.psu_states
1298};
1299
1300struct pfioc_src_nodes {
1301 int psn_len;
1302 union {
1303 caddr_t psu_buf;
1304 struct pf_src_node *psu_src_nodes;
1305 } psn_u;
1306#define psn_buf psn_u.psu_buf
1307#define psn_src_nodes psn_u.psu_src_nodes
1308};
1309
1310struct pfioc_if {
1311 char ifname[IFNAMSIZ];
1312};
1313
1314struct pfioc_tm {
1315 int timeout;
1316 int seconds;
1317};
1318
1319struct pfioc_limit {
1320 int index;
1321 unsigned limit;
1322};
1323
1324struct pfioc_altq {
1325 u_int32_t action;
1326 u_int32_t ticket;
1327 u_int32_t nr;
1328 struct pf_altq altq;
1329};
1330
1331struct pfioc_qstats {
1332 u_int32_t ticket;
1333 u_int32_t nr;
1334 void *buf;
1335 int nbytes;
1336 u_int8_t scheduler;
1337};
1338
1339struct pfioc_ruleset {
1340 u_int32_t nr;
1341 char path[MAXPATHLEN];
1342 char name[PF_ANCHOR_NAME_SIZE];
1343};
1344
1345#define PF_RULESET_ALTQ (PF_RULESET_MAX)
1346#define PF_RULESET_TABLE (PF_RULESET_MAX+1)
1347struct pfioc_trans {
1348 int size; /* number of elements */
1349 int esize; /* size of each element in bytes */
1350 struct pfioc_trans_e {
1351 int rs_num;
1352 char anchor[MAXPATHLEN];
1353 u_int32_t ticket;
1354 } *array;
1355};
1356
1357#define PFR_FLAG_ATOMIC 0x00000001
1358#define PFR_FLAG_DUMMY 0x00000002
1359#define PFR_FLAG_FEEDBACK 0x00000004
1360#define PFR_FLAG_CLSTATS 0x00000008
1361#define PFR_FLAG_ADDRSTOO 0x00000010
1362#define PFR_FLAG_REPLACE 0x00000020
1363#define PFR_FLAG_ALLRSETS 0x00000040
1364#define PFR_FLAG_ALLMASK 0x0000007F
1365#ifdef _KERNEL
1366#define PFR_FLAG_USERIOCTL 0x10000000
1367#endif
1368
1369struct pfioc_table {
1370 struct pfr_table pfrio_table;
1371 void *pfrio_buffer;
1372 int pfrio_esize;
1373 int pfrio_size;
1374 int pfrio_size2;
1375 int pfrio_nadd;
1376 int pfrio_ndel;
1377 int pfrio_nchange;
1378 int pfrio_flags;
1379 u_int32_t pfrio_ticket;
1380};
1381#define pfrio_exists pfrio_nadd
1382#define pfrio_nzero pfrio_nadd
1383#define pfrio_nmatch pfrio_nadd
1384#define pfrio_naddr pfrio_size2
1385#define pfrio_setflag pfrio_size2
1386#define pfrio_clrflag pfrio_nadd
1387
1388
1389#define PFI_FLAG_GROUP 0x0001 /* gets groups of interfaces */
1390#define PFI_FLAG_INSTANCE 0x0002 /* gets single interfaces */
1391#define PFI_FLAG_ALLMASK 0x0003
1392
1393struct pfioc_iface {
1394 char pfiio_name[IFNAMSIZ];
1395 void *pfiio_buffer;
1396 int pfiio_esize;
1397 int pfiio_size;
1398 int pfiio_nzero;
1399 int pfiio_flags;
1400};
1401
1402
1403/*
1404 * ioctl operations
1405 */
1406
1407#define DIOCSTART _IO ('D', 1)
1408#define DIOCSTOP _IO ('D', 2)
1409#define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule)
1410#define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule)
1411#define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule)
1412/* XXX cut 8 - 17 */
1413#define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill)
1414#define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state)
1415#define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if)
1416#define DIOCGETSTATUS _IOWR('D', 21, struct pf_status)
1417#define DIOCCLRSTATUS _IO ('D', 22)
1418#define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook)
1419#define DIOCSETDEBUG _IOWR('D', 24, u_int32_t)
1420#define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states)
1421#define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule)
1422/* XXX cut 26 - 28 */
1423#define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm)
1424#define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm)
1425#define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state)
1426#define DIOCCLRRULECTRS _IO ('D', 38)
1427#define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit)
1428#define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit)
1429#define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill)
1430#define DIOCSTARTALTQ _IO ('D', 42)
1431#define DIOCSTOPALTQ _IO ('D', 43)
1432#define DIOCADDALTQ _IOWR('D', 45, struct pfioc_altq)
1433#define DIOCGETALTQS _IOWR('D', 47, struct pfioc_altq)
1434#define DIOCGETALTQ _IOWR('D', 48, struct pfioc_altq)
1435#define DIOCCHANGEALTQ _IOWR('D', 49, struct pfioc_altq)
1436#define DIOCGETQSTATS _IOWR('D', 50, struct pfioc_qstats)
1437#define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr)
1438#define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr)
1439#define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr)
1440#define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr)
1441#define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr)
1442/* XXX cut 55 - 57 */
1443#define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset)
1444#define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset)
1445#define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table)
1446#define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table)
1447#define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table)
1448#define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table)
1449#define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table)
1450#define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table)
1451#define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table)
1452#define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table)
1453#define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table)
1454#define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table)
1455#define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table)
1456#define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table)
1457#define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table)
1458#define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table)
1459#define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table)
1460#define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table)
1461#define DIOCOSFPFLUSH _IO('D', 78)
1462#define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl)
1463#define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl)
1464#define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans)
1465#define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans)
1466#define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans)
1467#define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes)
1468#define DIOCCLRSRCNODES _IO('D', 85)
1469#define DIOCSETHOSTID _IOWR('D', 86, u_int32_t)
1470#define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface)
1471#define DIOCICLRISTATS _IOWR('D', 88, struct pfioc_iface)
1472#define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface)
1473#define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface)
1474#ifdef __FreeBSD__
1475struct pf_ifspeed {
1476 char ifname[IFNAMSIZ];
1477 u_int32_t baudrate;
1478};
1479#define DIOCGIFSPEED _IOWR('D', 91, struct pf_ifspeed)
1480#endif
1481
1482#ifdef _KERNEL
1483RB_HEAD(pf_src_tree, pf_src_node);
1484RB_PROTOTYPE(pf_src_tree, pf_src_node, entry, pf_src_compare);
1485extern struct pf_src_tree tree_src_tracking;
1486
1487RB_HEAD(pf_state_tree_id, pf_state);
1488RB_PROTOTYPE(pf_state_tree_id, pf_state,
1489 entry_id, pf_state_compare_id);
1490extern struct pf_state_tree_id tree_id;
1491extern struct pf_state_queue state_updates;
1492
1493extern struct pf_anchor_global pf_anchors;
1494extern struct pf_ruleset pf_main_ruleset;
1495TAILQ_HEAD(pf_poolqueue, pf_pool);
1496extern struct pf_poolqueue pf_pools[2];
1497TAILQ_HEAD(pf_altqqueue, pf_altq);
1498extern struct pf_altqqueue pf_altqs[2];
1499extern struct pf_palist pf_pabuf;
1500extern struct pfi_kif **pfi_index2kif;
1501
1502extern u_int32_t ticket_altqs_active;
1503extern u_int32_t ticket_altqs_inactive;
1504extern int altqs_inactive_open;
1505extern u_int32_t ticket_pabuf;
1506extern struct pf_altqqueue *pf_altqs_active;
1507extern struct pf_altqqueue *pf_altqs_inactive;
1508extern struct pf_poolqueue *pf_pools_active;
1509extern struct pf_poolqueue *pf_pools_inactive;
1510extern int pf_tbladdr_setup(struct pf_ruleset *,
1511 struct pf_addr_wrap *);
1512extern void pf_tbladdr_remove(struct pf_addr_wrap *);
1513extern void pf_tbladdr_copyout(struct pf_addr_wrap *);
1514extern void pf_calc_skip_steps(struct pf_rulequeue *);
1515#ifdef __FreeBSD__
1516extern uma_zone_t pf_src_tree_pl, pf_rule_pl;
1517extern uma_zone_t pf_state_pl, pf_altq_pl, pf_pooladdr_pl;
1518extern uma_zone_t pfr_ktable_pl, pfr_kentry_pl, pfr_kentry_pl2;
1519extern uma_zone_t pf_cache_pl, pf_cent_pl;
1520extern uma_zone_t pf_state_scrub_pl;
1521extern uma_zone_t pfi_addr_pl;
1522#else
1523extern struct pool pf_src_tree_pl, pf_rule_pl;
1524extern struct pool pf_state_pl, pf_altq_pl, pf_pooladdr_pl;
1525extern struct pool pf_state_scrub_pl;
1526#endif
1527extern void pf_purge_timeout(void *);
1528extern void pf_purge_expired_src_nodes(void);
1529extern void pf_purge_expired_states(void);
1530extern void pf_purge_expired_state(struct pf_state *);
1531extern int pf_insert_state(struct pfi_kif *,
1532 struct pf_state *);
1533extern int pf_insert_src_node(struct pf_src_node **,
1534 struct pf_rule *, struct pf_addr *,
1535 sa_family_t);
1536void pf_src_tree_remove_state(struct pf_state *);
1537extern struct pf_state *pf_find_state_byid(struct pf_state *);
1538extern struct pf_state *pf_find_state_all(struct pf_state *key,
1539 u_int8_t tree, int *more);
1540extern void pf_print_state(struct pf_state *);
1541extern void pf_print_flags(u_int8_t);
1542extern struct pf_anchor *pf_find_anchor(const char *);
1543extern struct pf_ruleset *pf_find_ruleset(const char *);
1544extern struct pf_ruleset *pf_find_or_create_ruleset(const char *);
1545extern void pf_remove_if_empty_ruleset(
1546 struct pf_ruleset *);
1547extern u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t,
1548 u_int8_t);
1549
1550extern struct ifnet *sync_ifp;
1551extern struct pf_rule pf_default_rule;
1552extern void pf_addrcpy(struct pf_addr *, struct pf_addr *,
1553 u_int8_t);
1554void pf_rm_rule(struct pf_rulequeue *,
1555 struct pf_rule *);
1556
1557#ifdef INET
1558#ifdef __FreeBSD__
1559int pf_test(int, struct ifnet *, struct mbuf **, struct ether_header *,
1560 struct inpcb *);
1561#else
1562int pf_test(int, struct ifnet *, struct mbuf **, struct ether_header *);
1563#endif
1564#endif /* INET */
1565
1566#ifdef INET6
1567#ifdef __FreeBSD__
1568int pf_test6(int, struct ifnet *, struct mbuf **, struct ether_header *,
1569 struct inpcb *);
1570#else
1571int pf_test6(int, struct ifnet *, struct mbuf **, struct ether_header *);
1572#endif
1573void pf_poolmask(struct pf_addr *, struct pf_addr*,
1574 struct pf_addr *, struct pf_addr *, u_int8_t);
1575void pf_addr_inc(struct pf_addr *, sa_family_t);
1576#endif /* INET6 */
1577
1578void *pf_pull_hdr(struct mbuf *, int, void *, int, u_short *, u_short *,
1579 sa_family_t);
1580void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t);
1581int pflog_packet(struct pfi_kif *, struct mbuf *, sa_family_t, u_int8_t,
1582 u_int8_t, struct pf_rule *, struct pf_rule *, struct pf_ruleset *);
1583int pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *,
1584 struct pf_addr *, sa_family_t);
1585int pf_match(u_int8_t, u_int32_t, u_int32_t, u_int32_t);
1586int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t);
1587int pf_match_uid(u_int8_t, uid_t, uid_t, uid_t);
1588int pf_match_gid(u_int8_t, gid_t, gid_t, gid_t);
1589
1590void pf_normalize_init(void);
1591int pf_normalize_ip(struct mbuf **, int, struct pfi_kif *, u_short *,
1592 struct pf_pdesc *);
1593int pf_normalize_ip6(struct mbuf **, int, struct pfi_kif *, u_short *,
1594 struct pf_pdesc *);
1595int pf_normalize_tcp(int, struct pfi_kif *, struct mbuf *, int, int, void *,
1596 struct pf_pdesc *);
1597void pf_normalize_tcp_cleanup(struct pf_state *);
1598int pf_normalize_tcp_init(struct mbuf *, int, struct pf_pdesc *,
1599 struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *);
1600int pf_normalize_tcp_stateful(struct mbuf *, int, struct pf_pdesc *,
1601 u_short *, struct tcphdr *, struct pf_state *,
1602 struct pf_state_peer *, struct pf_state_peer *, int *);
1603u_int32_t
1604 pf_state_expires(const struct pf_state *);
1605void pf_purge_expired_fragments(void);
1606int pf_routable(struct pf_addr *addr, sa_family_t af);
1607int pf_rtlabel_match(struct pf_addr *, sa_family_t, struct pf_addr_wrap *);
1608void pfr_initialize(void);
1609int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t);
1610void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t,
1611 u_int64_t, int, int, int);
1612int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *,
1613 struct pf_addr **, struct pf_addr **, sa_family_t);
1614void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *);
1615struct pfr_ktable *
1616 pfr_attach_table(struct pf_ruleset *, char *);
1617void pfr_detach_table(struct pfr_ktable *);
1618int pfr_clr_tables(struct pfr_table *, int *, int);
1619int pfr_add_tables(struct pfr_table *, int, int *, int);
1620int pfr_del_tables(struct pfr_table *, int, int *, int);
1621int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int);
1622int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int);
1623int pfr_clr_tstats(struct pfr_table *, int, int *, int);
1624int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int);
1625int pfr_clr_addrs(struct pfr_table *, int *, int);
1626int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *, long);
1627int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
1628 int);
1629int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
1630 int);
1631int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
1632 int *, int *, int *, int);
1633int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int);
1634int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int);
1635int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *,
1636 int);
1637int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
1638 int);
1639int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int);
1640int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int);
1641int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int);
1642int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *,
1643 int *, u_int32_t, int);
1644
1645void pfi_initialize(void);
1646#ifdef __FreeBSD__
1647void pfi_cleanup(void);
1648#endif
1649void pfi_attach_clone(struct if_clone *);
1650void pfi_attach_ifnet(struct ifnet *);
1651void pfi_detach_ifnet(struct ifnet *);
1652struct pfi_kif *pfi_lookup_create(const char *);
1653struct pfi_kif *pfi_lookup_if(const char *);
1654int pfi_maybe_destroy(struct pfi_kif *);
1655struct pfi_kif *pfi_attach_rule(const char *);
1656void pfi_detach_rule(struct pfi_kif *);
1657void pfi_attach_state(struct pfi_kif *);
1658void pfi_detach_state(struct pfi_kif *);
1659int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t);
1660void pfi_dynaddr_copyout(struct pf_addr_wrap *);
1661void pfi_dynaddr_remove(struct pf_addr_wrap *);
1662void pfi_fill_oldstatus(struct pf_status *);
1663int pfi_clr_istats(const char *, int *, int);
1664int pfi_get_ifaces(const char *, struct pfi_if *, int *, int);
1665int pfi_set_flags(const char *, int);
1666int pfi_clear_flags(const char *, int);
1667int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *,
1668 sa_family_t);
1669
1670extern struct pfi_statehead pfi_statehead;
1671
1672u_int16_t pf_tagname2tag(char *);
1673void pf_tag2tagname(u_int16_t, char *);
1674void pf_tag_ref(u_int16_t);
1675void pf_tag_unref(u_int16_t);
1676int pf_tag_packet(struct mbuf *, struct pf_tag *, int);
1677u_int32_t pf_qname2qid(char *);
1678void pf_qid2qname(u_int32_t, char *);
1679void pf_qid_unref(u_int32_t);
1680
1681extern struct pf_status pf_status;
1682
1683#ifdef __FreeBSD__
1684extern uma_zone_t pf_frent_pl, pf_frag_pl;
1685#else
1686extern struct pool pf_frent_pl, pf_frag_pl;
1687#endif
1688
1689struct pf_pool_limit {
1690 void *pp;
1691 unsigned limit;
1692};
1693extern struct pf_pool_limit pf_pool_limits[PF_LIMIT_MAX];
1694
1695#ifdef __FreeBSD__
1696struct pf_frent {
1697 LIST_ENTRY(pf_frent) fr_next;
1698 struct ip *fr_ip;
1699 struct mbuf *fr_m;
1700};
1701
1702struct pf_frcache {
1703 LIST_ENTRY(pf_frcache) fr_next;
1704 uint16_t fr_off;
1705 uint16_t fr_end;
1706};
1707
1708struct pf_fragment {
1709 RB_ENTRY(pf_fragment) fr_entry;
1710 TAILQ_ENTRY(pf_fragment) frag_next;
1711 struct in_addr fr_src;
1712 struct in_addr fr_dst;
1713 u_int8_t fr_p; /* protocol of this fragment */
1714 u_int8_t fr_flags; /* status flags */
1715 u_int16_t fr_id; /* fragment id for reassemble */
1716 u_int16_t fr_max; /* fragment data max */
1717 u_int32_t fr_timeout;
1718#define fr_queue fr_u.fru_queue
1719#define fr_cache fr_u.fru_cache
1720 union {
1721 LIST_HEAD(pf_fragq, pf_frent) fru_queue; /* buffering */
1722 LIST_HEAD(pf_cacheq, pf_frcache) fru_cache; /* non-buf */
1723 } fr_u;
1724};
1725#endif /* (__FreeBSD__) */
1726
1727#endif /* _KERNEL */
1728
1729/* The fingerprint functions can be linked into userland programs (tcpdump) */
1730int pf_osfp_add(struct pf_osfp_ioctl *);
1731#ifdef _KERNEL
1732struct pf_osfp_enlist *
1733 pf_osfp_fingerprint(struct pf_pdesc *, struct mbuf *, int,
1734 const struct tcphdr *);
1735#endif /* _KERNEL */
1736struct pf_osfp_enlist *
1737 pf_osfp_fingerprint_hdr(const struct ip *, const struct tcphdr *);
1738void pf_osfp_flush(void);
1739int pf_osfp_get(struct pf_osfp_ioctl *);
1740#ifdef __FreeBSD__
1741int pf_osfp_initialize(void);
1742void pf_osfp_cleanup(void);
1743#else
1744void pf_osfp_initialize(void);
1745#endif
1746int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t);
1747struct pf_os_fingerprint *
1748 pf_osfp_validate(void);
1749
1750
1751#endif /* _NET_PFVAR_H_ */