1/* $OpenBSD: pfvar.h,v 1.170 2003/08/22 21:50:34 david Exp $ */
2
3/*
4 * Copyright (c) 2001 Daniel Hartmeier
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
11 * - Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * - Redistributions in binary form must reproduce the above
14 * copyright notice, this list of conditions and the following
15 * disclaimer in the documentation and/or other materials provided
16 * with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
21 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
22 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
24 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
25 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
26 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
28 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 *
31 */
32
33#ifndef _NET_PFVAR_H_
34#define _NET_PFVAR_H_
35
36#include <sys/types.h>
37#include <sys/queue.h>
38#include <sys/tree.h>
39
40#include <net/radix.h>
41#include <netinet/ip_ipsp.h>
42#include <netinet/tcp_fsm.h>
43
44struct ip;
45
46#define PF_TCPS_PROXY_SRC ((TCP_NSTATES)+0)
47#define PF_TCPS_PROXY_DST ((TCP_NSTATES)+1)
48
49enum { PF_INOUT, PF_IN, PF_OUT };
50enum { PF_PASS, PF_DROP, PF_SCRUB, PF_NAT, PF_NONAT,
51 PF_BINAT, PF_NOBINAT, PF_RDR, PF_NORDR, PF_SYNPROXY_DROP };
52enum { PF_RULESET_SCRUB, PF_RULESET_FILTER, PF_RULESET_NAT,
53 PF_RULESET_BINAT, PF_RULESET_RDR, PF_RULESET_MAX };
54enum { PF_OP_NONE, PF_OP_IRG, PF_OP_EQ, PF_OP_NE, PF_OP_LT,
55 PF_OP_LE, PF_OP_GT, PF_OP_GE, PF_OP_XRG, PF_OP_RRG };
56enum { PF_DEBUG_NONE, PF_DEBUG_URGENT, PF_DEBUG_MISC, PF_DEBUG_NOISY };
57enum { PF_CHANGE_NONE, PF_CHANGE_ADD_HEAD, PF_CHANGE_ADD_TAIL,
58 PF_CHANGE_ADD_BEFORE, PF_CHANGE_ADD_AFTER,
59 PF_CHANGE_REMOVE, PF_CHANGE_GET_TICKET };
60/*
61 * Note about PFTM_*: real indices into pf_rule.timeout[] come before
62 * PFTM_MAX, special cases afterwards. See pf_state_expires().
63 */
64enum { PFTM_TCP_FIRST_PACKET, PFTM_TCP_OPENING, PFTM_TCP_ESTABLISHED,
65 PFTM_TCP_CLOSING, PFTM_TCP_FIN_WAIT, PFTM_TCP_CLOSED,
66 PFTM_UDP_FIRST_PACKET, PFTM_UDP_SINGLE, PFTM_UDP_MULTIPLE,
67 PFTM_ICMP_FIRST_PACKET, PFTM_ICMP_ERROR_REPLY,
68 PFTM_OTHER_FIRST_PACKET, PFTM_OTHER_SINGLE,
69 PFTM_OTHER_MULTIPLE, PFTM_FRAG, PFTM_INTERVAL,
70 PFTM_ADAPTIVE_START, PFTM_ADAPTIVE_END, PFTM_MAX,
71 PFTM_PURGE, PFTM_UNTIL_PACKET };
72enum { PF_NOPFROUTE, PF_FASTROUTE, PF_ROUTETO, PF_DUPTO, PF_REPLYTO };
73enum { PF_LIMIT_STATES, PF_LIMIT_FRAGS, PF_LIMIT_MAX };
74#define PF_POOL_IDMASK 0x0f
75enum { PF_POOL_NONE, PF_POOL_BITMASK, PF_POOL_RANDOM,
76 PF_POOL_SRCHASH, PF_POOL_ROUNDROBIN };
77enum { PF_ADDR_ADDRMASK, PF_ADDR_NOROUTE, PF_ADDR_DYNIFTL,
78 PF_ADDR_TABLE };
79#define PF_POOL_TYPEMASK 0x0f
80#define PF_WSCALE_FLAG 0x80
81#define PF_WSCALE_MASK 0x0f
82
83struct pf_addr {
84 union {
85 struct in_addr v4;
86 struct in6_addr v6;
87 u_int8_t addr8[16];
88 u_int16_t addr16[8];
89 u_int32_t addr32[4];
90 } pfa; /* 128-bit address */
91#define v4 pfa.v4
92#define v6 pfa.v6
93#define addr8 pfa.addr8
94#define addr16 pfa.addr16
95#define addr32 pfa.addr32
96};
97
98#define PF_TABLE_NAME_SIZE 32
99
100struct pf_addr_wrap {
101 union {
102 struct {
103 struct pf_addr addr;
104 struct pf_addr mask;
105 } a;
106 char ifname[IFNAMSIZ];
107 char tblname[PF_TABLE_NAME_SIZE];
108 } v;
109 union {
110 struct pf_addr_dyn *dyn;
111 struct pfr_ktable *tbl;
112 int tblcnt;
113 } p;
114 u_int8_t type; /* PF_ADDR_* */
115};
116
117struct pf_addr_dyn {
118 char ifname[IFNAMSIZ];
119 struct ifnet *ifp;
120 struct pf_addr *addr;
121 sa_family_t af;
122 void *hook_cookie;
123 u_int8_t undefined;
124};
125
126/*
127 * Address manipulation macros
128 */
129
130#ifdef _KERNEL
131
132#ifdef INET
133#ifndef INET6
134#define PF_INET_ONLY
135#endif /* ! INET6 */
136#endif /* INET */
137
138#ifdef INET6
139#ifndef INET
140#define PF_INET6_ONLY
141#endif /* ! INET */
142#endif /* INET6 */
143
144#ifdef INET
145#ifdef INET6
146#define PF_INET_INET6
147#endif /* INET6 */
148#endif /* INET */
149
150#else
151
152#define PF_INET_INET6
153
154#endif /* _KERNEL */
155
156/* Both IPv4 and IPv6 */
157#ifdef PF_INET_INET6
158
159#define PF_AEQ(a, b, c) \
160 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \
161 ((a)->addr32[3] == (b)->addr32[3] && \
162 (a)->addr32[2] == (b)->addr32[2] && \
163 (a)->addr32[1] == (b)->addr32[1] && \
164 (a)->addr32[0] == (b)->addr32[0])) \
165
166#define PF_ANEQ(a, b, c) \
167 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \
168 ((a)->addr32[3] != (b)->addr32[3] || \
169 (a)->addr32[2] != (b)->addr32[2] || \
170 (a)->addr32[1] != (b)->addr32[1] || \
171 (a)->addr32[0] != (b)->addr32[0])) \
172
173#define PF_AZERO(a, c) \
174 ((c == AF_INET && !(a)->addr32[0]) || \
175 (!(a)->addr32[0] && !(a)->addr32[1] && \
176 !(a)->addr32[2] && !(a)->addr32[3] )) \
177
178#define PF_MATCHA(n, a, m, b, f) \
179 pf_match_addr(n, a, m, b, f)
180
181#define PF_ACPY(a, b, f) \
182 pf_addrcpy(a, b, f)
183
184#define PF_AINC(a, f) \
185 pf_addr_inc(a, f)
186
187#define PF_POOLMASK(a, b, c, d, f) \
188 pf_poolmask(a, b, c, d, f)
189
190#else
191
192/* Just IPv6 */
193
194#ifdef PF_INET6_ONLY
195
196#define PF_AEQ(a, b, c) \
197 ((a)->addr32[3] == (b)->addr32[3] && \
198 (a)->addr32[2] == (b)->addr32[2] && \
199 (a)->addr32[1] == (b)->addr32[1] && \
200 (a)->addr32[0] == (b)->addr32[0]) \
201
202#define PF_ANEQ(a, b, c) \
203 ((a)->addr32[3] != (b)->addr32[3] || \
204 (a)->addr32[2] != (b)->addr32[2] || \
205 (a)->addr32[1] != (b)->addr32[1] || \
206 (a)->addr32[0] != (b)->addr32[0]) \
207
208#define PF_AZERO(a, c) \
209 (!(a)->addr32[0] && \
210 !(a)->addr32[1] && \
211 !(a)->addr32[2] && \
212 !(a)->addr32[3] ) \
213
214#define PF_MATCHA(n, a, m, b, f) \
215 pf_match_addr(n, a, m, b, f)
216
217#define PF_ACPY(a, b, f) \
218 pf_addrcpy(a, b, f)
219
220#define PF_AINC(a, f) \
221 pf_addr_inc(a, f)
222
223#define PF_POOLMASK(a, b, c, d, f) \
224 pf_poolmask(a, b, c, d, f)
225
226#else
227
228/* Just IPv4 */
229#ifdef PF_INET_ONLY
230
231#define PF_AEQ(a, b, c) \
232 ((a)->addr32[0] == (b)->addr32[0])
233
234#define PF_ANEQ(a, b, c) \
235 ((a)->addr32[0] != (b)->addr32[0])
236
237#define PF_AZERO(a, c) \
238 (!(a)->addr32[0])
239
240#define PF_MATCHA(n, a, m, b, f) \
241 pf_match_addr(n, a, m, b, f)
242
243#define PF_ACPY(a, b, f) \
244 (a)->v4.s_addr = (b)->v4.s_addr
245
246#define PF_AINC(a, f) \
247 do { \
248 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \
249 } while (0)
250
251#define PF_POOLMASK(a, b, c, d, f) \
252 do { \
253 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \
254 (((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \
255 } while (0)
256
257#endif /* PF_INET_ONLY */
258#endif /* PF_INET6_ONLY */
259#endif /* PF_INET_INET6 */
260
261#define PF_MISMATCHAW(aw, x, af, not) \
262 ( \
263 (((aw)->type == PF_ADDR_NOROUTE && \
264 pf_routable((x), (af))) || \
265 ((aw)->type == PF_ADDR_TABLE && \
266 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \
267 ((aw)->type == PF_ADDR_DYNIFTL && \
268 ((aw)->p.dyn->undefined || \
269 (!PF_AZERO(&(aw)->v.a.mask, (af)) && \
270 !PF_MATCHA(0, &(aw)->v.a.addr, \
271 &(aw)->v.a.mask, (x), (af))))) || \
272 ((aw)->type == PF_ADDR_ADDRMASK && \
273 !PF_AZERO(&(aw)->v.a.mask, (af)) && \
274 !PF_MATCHA(0, &(aw)->v.a.addr, \
275 &(aw)->v.a.mask, (x), (af)))) != \
276 (not) \
277 )
278
279struct pf_rule_uid {
280 uid_t uid[2];
281 u_int8_t op;
282};
283
284struct pf_rule_gid {
285 uid_t gid[2];
286 u_int8_t op;
287};
288
289struct pf_rule_addr {
290 struct pf_addr_wrap addr;
291 u_int16_t port[2];
292 u_int8_t not;
293 u_int8_t port_op;
294};
295
296struct pf_pooladdr {
297 struct pf_addr_wrap addr;
298 TAILQ_ENTRY(pf_pooladdr) entries;
299 char ifname[IFNAMSIZ];
300 struct ifnet *ifp;
301};
302
303TAILQ_HEAD(pf_palist, pf_pooladdr);
304
305struct pf_poolhashkey {
306 union {
307 u_int8_t key8[16];
308 u_int16_t key16[8];
309 u_int32_t key32[4];
310 } pfk; /* 128-bit hash key */
311#define key8 pfk.key8
312#define key16 pfk.key16
313#define key32 pfk.key32
314};
315
316struct pf_pool {
317 struct pf_palist list;
318 struct pf_pooladdr *cur;
319 struct pf_poolhashkey key;
320 struct pf_addr counter;
321 int tblidx;
322 u_int16_t proxy_port[2];
323 u_int8_t port_op;
324 u_int8_t opts;
325};
326
327
328/* A packed Operating System description for fingerprinting */
329typedef u_int32_t pf_osfp_t;
330#define PF_OSFP_ANY ((pf_osfp_t)0)
331#define PF_OSFP_UNKNOWN ((pf_osfp_t)-1)
332#define PF_OSFP_NOMATCH ((pf_osfp_t)-2)
333
334struct pf_osfp_entry {
335 SLIST_ENTRY(pf_osfp_entry) fp_entry;
336 pf_osfp_t fp_os;
337 int fp_enflags;
338#define PF_OSFP_EXPANDED 0x001 /* expanded entry */
339#define PF_OSFP_GENERIC 0x002 /* generic signature */
340#define PF_OSFP_NODETAIL 0x004 /* no p0f details */
341#define PF_OSFP_LEN 32
342 char fp_class_nm[PF_OSFP_LEN];
343 char fp_version_nm[PF_OSFP_LEN];
344 char fp_subtype_nm[PF_OSFP_LEN];
345};
346#define PF_OSFP_ENTRY_EQ(a, b) \
347 ((a)->fp_os == (b)->fp_os && \
348 memcmp((a)->fp_class_nm, (b)->fp_class_nm, PF_OSFP_LEN) == 0 && \
349 memcmp((a)->fp_version_nm, (b)->fp_version_nm, PF_OSFP_LEN) == 0 && \
350 memcmp((a)->fp_subtype_nm, (b)->fp_subtype_nm, PF_OSFP_LEN) == 0)
351
352/* handle pf_osfp_t packing */
353#define _FP_RESERVED_BIT 1 /* For the special negative #defines */
354#define _FP_UNUSED_BITS 1
355#define _FP_CLASS_BITS 10 /* OS Class (Windows, Linux) */
356#define _FP_VERSION_BITS 10 /* OS version (95, 98, NT, 2.4.54, 3.2) */
357#define _FP_SUBTYPE_BITS 10 /* patch level (NT SP4, SP3, ECN patch) */
358#define PF_OSFP_UNPACK(osfp, class, version, subtype) do { \
359 (class) = ((osfp) >> (_FP_VERSION_BITS+_FP_SUBTYPE_BITS)) & \
360 ((1 << _FP_CLASS_BITS) - 1); \
361 (version) = ((osfp) >> _FP_SUBTYPE_BITS) & \
362 ((1 << _FP_VERSION_BITS) - 1);\
363 (subtype) = (osfp) & ((1 << _FP_SUBTYPE_BITS) - 1); \
364} while(0)
365#define PF_OSFP_PACK(osfp, class, version, subtype) do { \
366 (osfp) = ((class) & ((1 << _FP_CLASS_BITS) - 1)) << (_FP_VERSION_BITS \
367 + _FP_SUBTYPE_BITS); \
368 (osfp) |= ((version) & ((1 << _FP_VERSION_BITS) - 1)) << \
369 _FP_SUBTYPE_BITS; \
370 (osfp) |= (subtype) & ((1 << _FP_SUBTYPE_BITS) - 1); \
371} while(0)
372
373/* the fingerprint of an OSes TCP SYN packet */
374typedef u_int64_t pf_tcpopts_t;
375struct pf_os_fingerprint {
376 SLIST_HEAD(pf_osfp_enlist, pf_osfp_entry) fp_oses; /* list of matches */
377 pf_tcpopts_t fp_tcpopts; /* packed TCP options */
378 u_int16_t fp_wsize; /* TCP window size */
379 u_int16_t fp_psize; /* ip->ip_len */
380 u_int16_t fp_mss; /* TCP MSS */
381 u_int16_t fp_flags;
382#define PF_OSFP_WSIZE_MOD 0x0001 /* Window modulus */
383#define PF_OSFP_WSIZE_DC 0x0002 /* Window don't care */
384#define PF_OSFP_WSIZE_MSS 0x0004 /* Window multiple of MSS */
385#define PF_OSFP_WSIZE_MTU 0x0008 /* Window multiple of MTU */
386#define PF_OSFP_PSIZE_MOD 0x0010 /* packet size modulus */
387#define PF_OSFP_PSIZE_DC 0x0020 /* packet size don't care */
388#define PF_OSFP_WSCALE 0x0040 /* TCP window scaling */
389#define PF_OSFP_WSCALE_MOD 0x0080 /* TCP window scale modulus */
390#define PF_OSFP_WSCALE_DC 0x0100 /* TCP window scale dont-care */
391#define PF_OSFP_MSS 0x0200 /* TCP MSS */
392#define PF_OSFP_MSS_MOD 0x0400 /* TCP MSS modulus */
393#define PF_OSFP_MSS_DC 0x0800 /* TCP MSS dont-care */
394#define PF_OSFP_DF 0x1000 /* IPv4 don't fragment bit */
395#define PF_OSFP_TS0 0x2000 /* Zero timestamp */
396 u_int8_t fp_optcnt; /* TCP option count */
397 u_int8_t fp_wscale; /* TCP window scaling */
398 u_int8_t fp_ttl; /* IPv4 TTL */
399#define PF_OSFP_MAXTTL_OFFSET 40
400/* TCP options packing */
401#define PF_OSFP_TCPOPT_NOP 0x0 /* TCP NOP option */
402#define PF_OSFP_TCPOPT_WSCALE 0x1 /* TCP window scaling option */
403#define PF_OSFP_TCPOPT_MSS 0x2 /* TCP max segment size opt */
404#define PF_OSFP_TCPOPT_SACK 0x3 /* TCP SACK OK option */
405#define PF_OSFP_TCPOPT_TS 0x4 /* TCP timestamp option */
406#define PF_OSFP_TCPOPT_BITS 3 /* bits used by each option */
407#define PF_OSFP_MAX_OPTS \
408 (sizeof(((struct pf_os_fingerprint *)0)->fp_tcpopts) * 8) \
409 / PF_OSFP_TCPOPT_BITS
410
411 SLIST_ENTRY(pf_os_fingerprint) fp_next;
412};
413
414struct pf_osfp_ioctl {
415 struct pf_osfp_entry fp_os;
416 pf_tcpopts_t fp_tcpopts; /* packed TCP options */
417 u_int16_t fp_wsize; /* TCP window size */
418 u_int16_t fp_psize; /* ip->ip_len */
419 u_int16_t fp_mss; /* TCP MSS */
420 u_int16_t fp_flags;
421 u_int8_t fp_optcnt; /* TCP option count */
422 u_int8_t fp_wscale; /* TCP window scaling */
423 u_int8_t fp_ttl; /* IPv4 TTL */
424
425 int fp_getnum; /* DIOCOSFPGET number */
426};
427
428
429union pf_rule_ptr {
430 struct pf_rule *ptr;
431 u_int32_t nr;
432};
433
434struct pf_rule {
435 struct pf_rule_addr src;
436 struct pf_rule_addr dst;
437#define PF_SKIP_IFP 0
438#define PF_SKIP_DIR 1
439#define PF_SKIP_AF 2
440#define PF_SKIP_PROTO 3
441#define PF_SKIP_SRC_ADDR 4
442#define PF_SKIP_SRC_PORT 5
443#define PF_SKIP_DST_ADDR 6
444#define PF_SKIP_DST_PORT 7
445#define PF_SKIP_COUNT 8
446 union pf_rule_ptr skip[PF_SKIP_COUNT];
447#define PF_RULE_LABEL_SIZE 64
448 char label[PF_RULE_LABEL_SIZE];
449 u_int32_t timeout[PFTM_MAX];
450#define PF_QNAME_SIZE 16
451 char ifname[IFNAMSIZ];
452 char qname[PF_QNAME_SIZE];
453 char pqname[PF_QNAME_SIZE];
454#define PF_ANCHOR_NAME_SIZE 16
455 char anchorname[PF_ANCHOR_NAME_SIZE];
456#define PF_TAG_NAME_SIZE 16
457 char tagname[PF_TAG_NAME_SIZE];
458 char match_tagname[PF_TAG_NAME_SIZE];
459
460 TAILQ_ENTRY(pf_rule) entries;
461 struct pf_pool rpool;
462
463 u_int64_t evaluations;
464 u_int64_t packets;
465 u_int64_t bytes;
466
467 struct ifnet *ifp;
468 struct pf_anchor *anchor;
469
470 pf_osfp_t os_fingerprint;
471 u_int32_t states;
472 u_int32_t max_states;
473 u_int32_t qid;
474 u_int32_t pqid;
475 u_int32_t rt_listid;
476 u_int32_t nr;
477
478 u_int16_t return_icmp;
479 u_int16_t return_icmp6;
480 u_int16_t max_mss;
481 u_int16_t tag;
482 u_int16_t match_tag;
483
484 struct pf_rule_uid uid;
485 struct pf_rule_gid gid;
486
487 u_int32_t rule_flag;
488 u_int8_t action;
489 u_int8_t direction;
490 u_int8_t log;
491 u_int8_t quick;
492 u_int8_t ifnot;
493 u_int8_t match_tag_not;
494 u_int8_t natpass;
495
496#define PF_STATE_NORMAL 0x1
497#define PF_STATE_MODULATE 0x2
498#define PF_STATE_SYNPROXY 0x3
499 u_int8_t keep_state;
500 sa_family_t af;
501 u_int8_t proto;
502 u_int8_t type;
503 u_int8_t code;
504 u_int8_t flags;
505 u_int8_t flagset;
506 u_int8_t min_ttl;
507 u_int8_t allow_opts;
508 u_int8_t rt;
509 u_int8_t return_ttl;
510 u_int8_t tos;
511};
512
513/* rule flags */
514#define PFRULE_DROP 0x0000
515#define PFRULE_RETURNRST 0x0001
516#define PFRULE_FRAGMENT 0x0002
517#define PFRULE_RETURNICMP 0x0004
518#define PFRULE_RETURN 0x0008
519
520/* scrub flags */
521#define PFRULE_NODF 0x0100
522#define PFRULE_FRAGCROP 0x0200 /* non-buffering frag cache */
523#define PFRULE_FRAGDROP 0x0400 /* drop funny fragments */
524#define PFRULE_RANDOMID 0x0800
525#define PFRULE_REASSEMBLE_TCP 0x1000
526
527#define PFSTATE_HIWAT 10000 /* default state table size */
528
529
530struct pf_state_scrub {
531 u_int16_t pfss_flags;
532#define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */
533 u_int8_t pfss_ttl; /* stashed TTL */
534 u_int8_t pad;
535 u_int32_t pfss_ts_mod; /* timestamp modulation */
536};
537
538struct pf_state_host {
539 struct pf_addr addr;
540 u_int16_t port;
541 u_int16_t pad;
542};
543
544struct pf_state_peer {
545 u_int32_t seqlo; /* Max sequence number sent */
546 u_int32_t seqhi; /* Max the other end ACKd + win */
547 u_int32_t seqdiff; /* Sequence number modulator */
548 u_int16_t max_win; /* largest window (pre scaling) */
549 u_int8_t state; /* active state level */
550 u_int8_t wscale; /* window scaling factor */
551 u_int16_t mss; /* Maximum segment size option */
552 struct pf_state_scrub *scrub; /* state is scrubbed */
553};
554
555struct pf_state {
556 struct pf_state_host lan;
557 struct pf_state_host gwy;
558 struct pf_state_host ext;
559 struct pf_state_peer src;
560 struct pf_state_peer dst;
561 union pf_rule_ptr rule;
562 union pf_rule_ptr anchor;
563 union pf_rule_ptr nat_rule;
564 struct pf_addr rt_addr;
565 struct ifnet *rt_ifp;
566 u_int32_t creation;
567 u_int32_t expire;
568 u_int32_t packets[2];
569 u_int32_t bytes[2];
570 sa_family_t af;
571 u_int8_t proto;
572 u_int8_t direction;
573 u_int8_t log;
574 u_int8_t allow_opts;
575 u_int8_t timeout;
576 u_int8_t pad[2];
577};
578
579struct pf_tree_node {
580 RB_ENTRY(pf_tree_node) entry;
581 struct pf_state *state;
582 struct pf_addr addr[2];
583 u_int16_t port[2];
584 sa_family_t af;
585 u_int8_t proto;
586};
587
588TAILQ_HEAD(pf_rulequeue, pf_rule);
589
590struct pf_anchor;
591
592struct pf_ruleset {
593 TAILQ_ENTRY(pf_ruleset) entries;
594#define PF_RULESET_NAME_SIZE 16
595 char name[PF_RULESET_NAME_SIZE];
596 struct {
597 struct pf_rulequeue queues[2];
598 struct {
599 struct pf_rulequeue *ptr;
600 u_int32_t ticket;
601 } active, inactive;
602 } rules[PF_RULESET_MAX];
603 struct pf_anchor *anchor;
604 u_int32_t tticket;
605 int tables;
606 int topen;
607};
608
609TAILQ_HEAD(pf_rulesetqueue, pf_ruleset);
610
611struct pf_anchor {
612 TAILQ_ENTRY(pf_anchor) entries;
613 char name[PF_ANCHOR_NAME_SIZE];
614 struct pf_rulesetqueue rulesets;
615 int tables;
616};
617
618TAILQ_HEAD(pf_anchorqueue, pf_anchor);
619
620#define PFR_TFLAG_PERSIST 0x00000001
621#define PFR_TFLAG_CONST 0x00000002
622#define PFR_TFLAG_ACTIVE 0x00000004
623#define PFR_TFLAG_INACTIVE 0x00000008
624#define PFR_TFLAG_REFERENCED 0x00000010
625#define PFR_TFLAG_REFDANCHOR 0x00000020
626#define PFR_TFLAG_USRMASK 0x00000003
627#define PFR_TFLAG_SETMASK 0x0000003C
628#define PFR_TFLAG_ALLMASK 0x0000003F
629
630struct pfr_table {
631 char pfrt_anchor[PF_ANCHOR_NAME_SIZE];
632 char pfrt_ruleset[PF_RULESET_NAME_SIZE];
633 char pfrt_name[PF_TABLE_NAME_SIZE];
634 u_int32_t pfrt_flags;
635 u_int8_t pfrt_fback;
636};
637
638enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED,
639 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE,
640 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_MAX };
641
642struct pfr_addr {
643 union {
644 struct in_addr _pfra_ip4addr;
645 struct in6_addr _pfra_ip6addr;
646 } pfra_u;
647 u_int8_t pfra_af;
648 u_int8_t pfra_net;
649 u_int8_t pfra_not;
650 u_int8_t pfra_fback;
651};
652#define pfra_ip4addr pfra_u._pfra_ip4addr
653#define pfra_ip6addr pfra_u._pfra_ip6addr
654
655enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX };
656enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX };
657#define PFR_OP_XPASS PFR_OP_ADDR_MAX
658
659struct pfr_astats {
660 struct pfr_addr pfras_a;
661 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
662 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
663 long pfras_tzero;
664};
665
666enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX };
667
668struct pfr_tstats {
669 struct pfr_table pfrts_t;
670 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
671 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
672 u_int64_t pfrts_match;
673 u_int64_t pfrts_nomatch;
674 long pfrts_tzero;
675 int pfrts_cnt;
676 int pfrts_refcnt[PFR_REFCNT_MAX];
677};
678#define pfrts_name pfrts_t.pfrt_name
679#define pfrts_flags pfrts_t.pfrt_flags
680
681SLIST_HEAD(pfr_kentryworkq, pfr_kentry);
682struct pfr_kentry {
683 struct radix_node pfrke_node[2];
684 union sockaddr_union pfrke_sa;
685 u_int64_t pfrke_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
686 u_int64_t pfrke_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
687 SLIST_ENTRY(pfr_kentry) pfrke_workq;
688 long pfrke_tzero;
689 u_int8_t pfrke_af;
690 u_int8_t pfrke_net;
691 u_int8_t pfrke_not;
692 u_int8_t pfrke_mark;
693};
694
695SLIST_HEAD(pfr_ktableworkq, pfr_ktable);
696RB_HEAD(pfr_ktablehead, pfr_ktable);
697struct pfr_ktable {
698 struct pfr_tstats pfrkt_ts;
699 RB_ENTRY(pfr_ktable) pfrkt_tree;
700 SLIST_ENTRY(pfr_ktable) pfrkt_workq;
701 struct radix_node_head *pfrkt_ip4;
702 struct radix_node_head *pfrkt_ip6;
703 struct pfr_ktable *pfrkt_shadow;
704 struct pfr_ktable *pfrkt_root;
705 struct pf_ruleset *pfrkt_rs;
706 int pfrkt_nflags;
707};
708#define pfrkt_t pfrkt_ts.pfrts_t
709#define pfrkt_name pfrkt_t.pfrt_name
710#define pfrkt_anchor pfrkt_t.pfrt_anchor
711#define pfrkt_ruleset pfrkt_t.pfrt_ruleset
712#define pfrkt_flags pfrkt_t.pfrt_flags
713#define pfrkt_cnt pfrkt_ts.pfrts_cnt
714#define pfrkt_refcnt pfrkt_ts.pfrts_refcnt
715#define pfrkt_packets pfrkt_ts.pfrts_packets
716#define pfrkt_bytes pfrkt_ts.pfrts_bytes
717#define pfrkt_match pfrkt_ts.pfrts_match
718#define pfrkt_nomatch pfrkt_ts.pfrts_nomatch
719#define pfrkt_tzero pfrkt_ts.pfrts_tzero
720
721struct pf_pdesc {
722 u_int64_t tot_len; /* Make Mickey money */
723 union {
724 struct tcphdr *tcp;
725 struct udphdr *udp;
726 struct icmp *icmp;
727#ifdef INET6
728 struct icmp6_hdr *icmp6;
729#endif /* INET6 */
730 void *any;
731 } hdr;
732 struct pf_addr *src;
733 struct pf_addr *dst;
734 u_int16_t *ip_sum;
735 u_int32_t p_len; /* total length of payload */
736 u_int16_t flags; /* Let SCRUB trigger behavior in
737 * state code. Easier than tags */
738#define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */
739 sa_family_t af;
740 u_int8_t proto;
741 u_int8_t tos;
742};
743
744/* flags for RDR options */
745#define PF_DPORT_RANGE 0x01 /* Dest port uses range */
746#define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */
747
748/* Reasons code for passing/dropping a packet */
749#define PFRES_MATCH 0 /* Explicit match of a rule */
750#define PFRES_BADOFF 1 /* Bad offset for pull_hdr */
751#define PFRES_FRAG 2 /* Dropping following fragment */
752#define PFRES_SHORT 3 /* Dropping short packet */
753#define PFRES_NORM 4 /* Dropping by normalizer */
754#define PFRES_MEMORY 5 /* Dropped due to lacking mem */
755#define PFRES_MAX 6 /* total+1 */
756
757#define PFRES_NAMES { \
758 "match", \
759 "bad-offset", \
760 "fragment", \
761 "short", \
762 "normalize", \
763 "memory", \
764 NULL \
765}
766
767/* UDP state enumeration */
768#define PFUDPS_NO_TRAFFIC 0
769#define PFUDPS_SINGLE 1
770#define PFUDPS_MULTIPLE 2
771
772#define PFUDPS_NSTATES 3 /* number of state levels */
773
774#define PFUDPS_NAMES { \
775 "NO_TRAFFIC", \
776 "SINGLE", \
777 "MULTIPLE", \
778 NULL \
779}
780
781/* Other protocol state enumeration */
782#define PFOTHERS_NO_TRAFFIC 0
783#define PFOTHERS_SINGLE 1
784#define PFOTHERS_MULTIPLE 2
785
786#define PFOTHERS_NSTATES 3 /* number of state levels */
787
788#define PFOTHERS_NAMES { \
789 "NO_TRAFFIC", \
790 "SINGLE", \
791 "MULTIPLE", \
792 NULL \
793}
794
795#define FCNT_STATE_SEARCH 0
796#define FCNT_STATE_INSERT 1
797#define FCNT_STATE_REMOVALS 2
798#define FCNT_MAX 3
799
800
801#define ACTION_SET(a, x) \
802 do { \
803 if ((a) != NULL) \
804 *(a) = (x); \
805 } while (0)
806
807#define REASON_SET(a, x) \
808 do { \
809 if ((a) != NULL) \
810 *(a) = (x); \
811 if (x < PFRES_MAX) \
812 pf_status.counters[x]++; \
813 } while (0)
814
815struct pf_status {
816 u_int64_t counters[PFRES_MAX];
817 u_int64_t fcounters[FCNT_MAX];
818 u_int64_t pcounters[2][2][3];
819 u_int64_t bcounters[2][2];
820 u_int32_t running;
821 u_int32_t states;
822 u_int32_t since;
823 u_int32_t debug;
824 char ifname[IFNAMSIZ];
825};
826
827struct cbq_opts {
828 u_int minburst;
829 u_int maxburst;
830 u_int pktsize;
831 u_int maxpktsize;
832 u_int ns_per_byte;
833 u_int maxidle;
834 int minidle;
835 u_int offtime;
836 int flags;
837};
838
839struct priq_opts {
840 int flags;
841};
842
843struct hfsc_opts {
844 /* real-time service curve */
845 u_int rtsc_m1; /* slope of the 1st segment in bps */
846 u_int rtsc_d; /* the x-projection of m1 in msec */
847 u_int rtsc_m2; /* slope of the 2nd segment in bps */
848 /* link-sharing service curve */
849 u_int lssc_m1;
850 u_int lssc_d;
851 u_int lssc_m2;
852 /* upper-limit service curve */
853 u_int ulsc_m1;
854 u_int ulsc_d;
855 u_int ulsc_m2;
856 int flags;
857};
858
859struct pf_altq {
860 char ifname[IFNAMSIZ];
861
862 void *altq_disc; /* discipline-specific state */
863 TAILQ_ENTRY(pf_altq) entries;
864
865 /* scheduler spec */
866 u_int8_t scheduler; /* scheduler type */
867 u_int16_t tbrsize; /* tokenbucket regulator size */
868 u_int32_t ifbandwidth; /* interface bandwidth */
869
870 /* queue spec */
871 char qname[PF_QNAME_SIZE]; /* queue name */
872 char parent[PF_QNAME_SIZE]; /* parent name */
873 u_int32_t parent_qid; /* parent queue id */
874 u_int32_t bandwidth; /* queue bandwidth */
875 u_int8_t priority; /* priority */
876 u_int16_t qlimit; /* queue size limit */
877 u_int16_t flags; /* misc flags */
878 union {
879 struct cbq_opts cbq_opts;
880 struct priq_opts priq_opts;
881 struct hfsc_opts hfsc_opts;
882 } pq_u;
883
884 u_int32_t qid; /* return value */
885};
886
887struct pf_tag {
888 u_int16_t tag; /* tag id */
889};
890
891struct pf_tagname {
892 TAILQ_ENTRY(pf_tagname) entries;
893 char name[PF_TAG_NAME_SIZE];
894 u_int16_t tag;
895 int ref;
896};
897
898#define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */
899#define PFFRAG_FRAG_HIWAT 1000 /* Number of fragmented packets */
900#define PFFRAG_FRCENT_HIWAT 50000 /* Number of fragment cache entries */
901#define PFFRAG_FRCACHE_HIWAT 10000 /* Number of fragment descriptors */
902
903/*
904 * ioctl parameter structures
905 */
906
907struct pfioc_pooladdr {
908 u_int32_t action;
909 u_int32_t ticket;
910 u_int32_t nr;
911 u_int32_t r_num;
912 u_int8_t r_action;
913 u_int8_t r_last;
914 u_int8_t af;
915 char anchor[PF_ANCHOR_NAME_SIZE];
916 char ruleset[PF_RULESET_NAME_SIZE];
917 struct pf_pooladdr addr;
918};
919
920struct pfioc_rule {
921 u_int32_t action;
922 u_int32_t ticket;
923 u_int32_t pool_ticket;
924 u_int32_t nr;
925 char anchor[PF_ANCHOR_NAME_SIZE];
926 char ruleset[PF_RULESET_NAME_SIZE];
927 struct pf_rule rule;
928};
929
930struct pfioc_natlook {
931 struct pf_addr saddr;
932 struct pf_addr daddr;
933 struct pf_addr rsaddr;
934 struct pf_addr rdaddr;
935 u_int16_t sport;
936 u_int16_t dport;
937 u_int16_t rsport;
938 u_int16_t rdport;
939 sa_family_t af;
940 u_int8_t proto;
941 u_int8_t direction;
942};
943
944struct pfioc_state {
945 u_int32_t nr;
946 struct pf_state state;
947};
948
949struct pfioc_state_kill {
950 /* XXX returns the number of states killed in psk_af */
951 sa_family_t psk_af;
952 int psk_proto;
953 struct pf_rule_addr psk_src;
954 struct pf_rule_addr psk_dst;
955};
956
957struct pfioc_states {
958 int ps_len;
959 union {
960 caddr_t psu_buf;
961 struct pf_state *psu_states;
962 } ps_u;
963#define ps_buf ps_u.psu_buf
964#define ps_states ps_u.psu_states
965};
966
967struct pfioc_if {
968 char ifname[IFNAMSIZ];
969};
970
971struct pfioc_tm {
972 int timeout;
973 int seconds;
974};
975
976struct pfioc_limit {
977 int index;
978 unsigned limit;
979};
980
981struct pfioc_altq {
982 u_int32_t action;
983 u_int32_t ticket;
984 u_int32_t nr;
985 struct pf_altq altq;
986};
987
988struct pfioc_qstats {
989 u_int32_t ticket;
990 u_int32_t nr;
991 void *buf;
992 int nbytes;
993 u_int8_t scheduler;
994};
995
996struct pfioc_anchor {
997 u_int32_t nr;
998 char name[PF_ANCHOR_NAME_SIZE];
999};
1000
1001struct pfioc_ruleset {
1002 u_int32_t nr;
1003 char anchor[PF_ANCHOR_NAME_SIZE];
1004 char name[PF_RULESET_NAME_SIZE];
1005};
1006
1007#define PFR_FLAG_ATOMIC 0x00000001
1008#define PFR_FLAG_DUMMY 0x00000002
1009#define PFR_FLAG_FEEDBACK 0x00000004
1010#define PFR_FLAG_CLSTATS 0x00000008
1011#define PFR_FLAG_ADDRSTOO 0x00000010
1012#define PFR_FLAG_REPLACE 0x00000020
1013#define PFR_FLAG_ALLRSETS 0x00000040
1014#define PFR_FLAG_ALLMASK 0x0000007F
1015
1016struct pfioc_table {
1017 struct pfr_table pfrio_table;
1018 void *pfrio_buffer;
1019 int pfrio_esize;
1020 int pfrio_size;
1021 int pfrio_size2;
1022 int pfrio_nadd;
1023 int pfrio_ndel;
1024 int pfrio_nchange;
1025 int pfrio_flags;
1026 u_int32_t pfrio_ticket;
1027};
1028#define pfrio_exists pfrio_nadd
1029#define pfrio_nzero pfrio_nadd
1030#define pfrio_nmatch pfrio_nadd
1031#define pfrio_naddr pfrio_size2
1032#define pfrio_setflag pfrio_size2
1033#define pfrio_clrflag pfrio_nadd
1034
1035
1036/*
1037 * ioctl operations
1038 */
1039
1040#define DIOCSTART _IO ('D', 1)
1041#define DIOCSTOP _IO ('D', 2)
1042#define DIOCBEGINRULES _IOWR('D', 3, struct pfioc_rule)
1043#define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule)
1044#define DIOCCOMMITRULES _IOWR('D', 5, struct pfioc_rule)
1045#define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule)
1046#define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule)
1047/* XXX cut 8 - 17 */
1048#define DIOCCLRSTATES _IO ('D', 18)
1049#define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state)
1050#define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if)
1051#define DIOCGETSTATUS _IOWR('D', 21, struct pf_status)
1052#define DIOCCLRSTATUS _IO ('D', 22)
1053#define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook)
1054#define DIOCSETDEBUG _IOWR('D', 24, u_int32_t)
1055#define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states)
1056#define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule)
1057/* XXX cut 26 - 28 */
1058#define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm)
1059#define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm)
1060#define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state)
1061#define DIOCCLRRULECTRS _IO ('D', 38)
1062#define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit)
1063#define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit)
1064#define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill)
1065#define DIOCSTARTALTQ _IO ('D', 42)
1066#define DIOCSTOPALTQ _IO ('D', 43)
1067#define DIOCBEGINALTQS _IOWR('D', 44, u_int32_t)
1068#define DIOCADDALTQ _IOWR('D', 45, struct pfioc_altq)
1069#define DIOCCOMMITALTQS _IOWR('D', 46, u_int32_t)
1070#define DIOCGETALTQS _IOWR('D', 47, struct pfioc_altq)
1071#define DIOCGETALTQ _IOWR('D', 48, struct pfioc_altq)
1072#define DIOCCHANGEALTQ _IOWR('D', 49, struct pfioc_altq)
1073#define DIOCGETQSTATS _IOWR('D', 50, struct pfioc_qstats)
1074#define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr)
1075#define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr)
1076#define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr)
1077#define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr)
1078#define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr)
1079#define DIOCGETANCHORS _IOWR('D', 56, struct pfioc_anchor)
1080#define DIOCGETANCHOR _IOWR('D', 57, struct pfioc_anchor)
1081#define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset)
1082#define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset)
1083#define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table)
1084#define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table)
1085#define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table)
1086#define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table)
1087#define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table)
1088#define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table)
1089#define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table)
1090#define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table)
1091#define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table)
1092#define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table)
1093#define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table)
1094#define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table)
1095#define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table)
1096#define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table)
1097#define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table)
1098#define DIOCRINABEGIN _IOWR('D', 75, struct pfioc_table)
1099#define DIOCRINACOMMIT _IOWR('D', 76, struct pfioc_table)
1100#define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table)
1101#define DIOCOSFPFLUSH _IO('D', 78)
1102#define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl)
1103#define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl)
1104
1105#ifdef _KERNEL
1106RB_HEAD(pf_state_tree, pf_tree_node);
1107RB_PROTOTYPE(pf_state_tree, pf_tree_node, entry, pf_state_compare);
1108extern struct pf_state_tree tree_lan_ext, tree_ext_gwy;
1109
1110extern struct pf_anchorqueue pf_anchors;
1111extern struct pf_ruleset pf_main_ruleset;
1112TAILQ_HEAD(pf_poolqueue, pf_pool);
1113extern struct pf_poolqueue pf_pools[2];
1114TAILQ_HEAD(pf_altqqueue, pf_altq);
1115extern struct pf_altqqueue pf_altqs[2];
1116extern struct pf_palist pf_pabuf;
1117
1118
1119extern u_int32_t ticket_altqs_active;
1120extern u_int32_t ticket_altqs_inactive;
1121extern u_int32_t ticket_pabuf;
1122extern struct pf_altqqueue *pf_altqs_active;
1123extern struct pf_altqqueue *pf_altqs_inactive;
1124extern struct pf_poolqueue *pf_pools_active;
1125extern struct pf_poolqueue *pf_pools_inactive;
1126extern int pf_tbladdr_setup(struct pf_ruleset *,
1127 struct pf_addr_wrap *);
1128extern void pf_tbladdr_remove(struct pf_addr_wrap *);
1129extern void pf_tbladdr_copyout(struct pf_addr_wrap *);
1130extern int pf_dynaddr_setup(struct pf_addr_wrap *,
1131 sa_family_t);
1132extern void pf_dynaddr_copyout(struct pf_addr_wrap *);
1133extern void pf_dynaddr_remove(struct pf_addr_wrap *);
1134extern void pf_calc_skip_steps(struct pf_rulequeue *);
1135extern void pf_rule_set_qid(struct pf_rulequeue *);
1136extern u_int32_t pf_qname_to_qid(char *);
1137extern void pf_update_anchor_rules(void);
1138extern struct pool pf_tree_pl, pf_rule_pl, pf_addr_pl;
1139extern struct pool pf_state_pl, pf_altq_pl, pf_pooladdr_pl;
1140extern struct pool pf_state_scrub_pl;
1141extern void pf_purge_timeout(void *);
1142extern void pf_purge_expired_states(void);
1143extern int pf_insert_state(struct pf_state *);
1144extern struct pf_state *pf_find_state(struct pf_state_tree *,
1145 struct pf_tree_node *);
1146extern struct pf_anchor *pf_find_anchor(const char *);
1147extern struct pf_ruleset *pf_find_ruleset(char *, char *);
1148extern struct pf_ruleset *pf_find_or_create_ruleset(char *, char *);
1149extern void pf_remove_if_empty_ruleset(
1150 struct pf_ruleset *);
1151
1152extern struct ifnet *status_ifp;
1153extern struct pf_rule pf_default_rule;
1154extern void pf_addrcpy(struct pf_addr *, struct pf_addr *,
1155 u_int8_t);
1156void pf_rm_rule(struct pf_rulequeue *,
1157 struct pf_rule *);
1158
1159#ifdef INET
1160int pf_test(int, struct ifnet *, struct mbuf **);
1161#endif /* INET */
1162
1163#ifdef INET6
1164int pf_test6(int, struct ifnet *, struct mbuf **);
1165void pf_poolmask(struct pf_addr *, struct pf_addr*,
1166 struct pf_addr *, struct pf_addr *, u_int8_t);
1167void pf_addr_inc(struct pf_addr *, sa_family_t);
1168#endif /* INET6 */
1169
1170void *pf_pull_hdr(struct mbuf *, int, void *, int, u_short *, u_short *,
1171 sa_family_t);
1172void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t);
1173int pflog_packet(struct ifnet *, struct mbuf *, sa_family_t, u_int8_t,
1174 u_int8_t, struct pf_rule *, struct pf_rule *, struct pf_ruleset *);
1175int pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *,
1176 struct pf_addr *, sa_family_t);
1177int pf_match(u_int8_t, u_int32_t, u_int32_t, u_int32_t);
1178int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t);
1179int pf_match_uid(u_int8_t, uid_t, uid_t, uid_t);
1180int pf_match_gid(u_int8_t, gid_t, gid_t, gid_t);
1181
1182void pf_normalize_init(void);
1183int pf_normalize_ip(struct mbuf **, int, struct ifnet *, u_short *);
1184int pf_normalize_ip6(struct mbuf **, int, struct ifnet *, u_short *);
1185int pf_normalize_tcp(int, struct ifnet *, struct mbuf *, int, int, void *,
1186 struct pf_pdesc *);
1187void pf_normalize_tcp_cleanup(struct pf_state *);
1188int pf_normalize_tcp_init(struct mbuf *, int, struct pf_pdesc *,
1189 struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *);
1190int pf_normalize_tcp_stateful(struct mbuf *, int, struct pf_pdesc *,
1191 u_short *, struct tcphdr *, struct pf_state_peer *,
1192 struct pf_state_peer *, int *);
1193u_int32_t
1194 pf_state_expires(const struct pf_state *);
1195void pf_purge_expired_fragments(void);
1196int pf_routable(struct pf_addr *addr, sa_family_t af);
1197void pfr_initialize(void);
1198int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t);
1199void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t,
1200 u_int64_t, int, int, int);
1201int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *,
1202 struct pf_addr **, struct pf_addr **, sa_family_t);
1203struct pfr_ktable *
1204 pfr_attach_table(struct pf_ruleset *, char *);
1205void pfr_detach_table(struct pfr_ktable *);
1206int pfr_clr_tables(struct pfr_table *, int *, int);
1207int pfr_add_tables(struct pfr_table *, int, int *, int);
1208int pfr_del_tables(struct pfr_table *, int, int *, int);
1209int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int);
1210int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int);
1211int pfr_clr_tstats(struct pfr_table *, int, int *, int);
1212int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int);
1213int pfr_clr_addrs(struct pfr_table *, int *, int);
1214int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
1215 int);
1216int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
1217 int);
1218int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
1219 int *, int *, int *, int);
1220int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int);
1221int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int);
1222int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *,
1223 int);
1224int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
1225 int);
1226int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int);
1227int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int);
1228int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *,
1229 int *, u_int32_t, int);
1230
1231u_int16_t pf_tagname2tag(char *);
1232void pf_tag2tagname(u_int16_t, char *);
1233void pf_tag_unref(u_int16_t);
1234int pf_tag_packet(struct mbuf *, struct pf_tag *, int);
1235
1236extern struct pf_status pf_status;
1237extern struct pool pf_frent_pl, pf_frag_pl;
1238
1239struct pf_pool_limit {
1240 void *pp;
1241 unsigned limit;
1242};
1243extern struct pf_pool_limit pf_pool_limits[PF_LIMIT_MAX];
1244
1245#endif /* _KERNEL */
1246
1247/* The fingerprint functions can be linked into userland programs (tcpdump) */
1248int pf_osfp_add(struct pf_osfp_ioctl *);
1249#ifdef _KERNEL
1250struct pf_osfp_enlist *
1251 pf_osfp_fingerprint(struct pf_pdesc *, struct mbuf *, int,
1252 const struct tcphdr *);
1253#endif /* _KERNEL */
1254struct pf_osfp_enlist *
1255 pf_osfp_fingerprint_hdr(const struct ip *, const struct tcphdr *);
1256void pf_osfp_flush(void);
1257int pf_osfp_get(struct pf_osfp_ioctl *);
1258void pf_osfp_initialize(void);
1259int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t);
1260struct pf_os_fingerprint *
1261 pf_osfp_validate(void);
1262
1263
1264#endif /* _NET_PFVAR_H_ */
2
3/*
4 * Copyright (c) 2001 Daniel Hartmeier
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
11 * - Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * - Redistributions in binary form must reproduce the above
14 * copyright notice, this list of conditions and the following
15 * disclaimer in the documentation and/or other materials provided
16 * with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
21 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
22 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
24 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
25 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
26 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
28 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 *
31 */
32
33#ifndef _NET_PFVAR_H_
34#define _NET_PFVAR_H_
35
36#include <sys/types.h>
37#include <sys/queue.h>
38#include <sys/tree.h>
39
40#include <net/radix.h>
41#include <netinet/ip_ipsp.h>
42#include <netinet/tcp_fsm.h>
43
44struct ip;
45
46#define PF_TCPS_PROXY_SRC ((TCP_NSTATES)+0)
47#define PF_TCPS_PROXY_DST ((TCP_NSTATES)+1)
48
49enum { PF_INOUT, PF_IN, PF_OUT };
50enum { PF_PASS, PF_DROP, PF_SCRUB, PF_NAT, PF_NONAT,
51 PF_BINAT, PF_NOBINAT, PF_RDR, PF_NORDR, PF_SYNPROXY_DROP };
52enum { PF_RULESET_SCRUB, PF_RULESET_FILTER, PF_RULESET_NAT,
53 PF_RULESET_BINAT, PF_RULESET_RDR, PF_RULESET_MAX };
54enum { PF_OP_NONE, PF_OP_IRG, PF_OP_EQ, PF_OP_NE, PF_OP_LT,
55 PF_OP_LE, PF_OP_GT, PF_OP_GE, PF_OP_XRG, PF_OP_RRG };
56enum { PF_DEBUG_NONE, PF_DEBUG_URGENT, PF_DEBUG_MISC, PF_DEBUG_NOISY };
57enum { PF_CHANGE_NONE, PF_CHANGE_ADD_HEAD, PF_CHANGE_ADD_TAIL,
58 PF_CHANGE_ADD_BEFORE, PF_CHANGE_ADD_AFTER,
59 PF_CHANGE_REMOVE, PF_CHANGE_GET_TICKET };
60/*
61 * Note about PFTM_*: real indices into pf_rule.timeout[] come before
62 * PFTM_MAX, special cases afterwards. See pf_state_expires().
63 */
64enum { PFTM_TCP_FIRST_PACKET, PFTM_TCP_OPENING, PFTM_TCP_ESTABLISHED,
65 PFTM_TCP_CLOSING, PFTM_TCP_FIN_WAIT, PFTM_TCP_CLOSED,
66 PFTM_UDP_FIRST_PACKET, PFTM_UDP_SINGLE, PFTM_UDP_MULTIPLE,
67 PFTM_ICMP_FIRST_PACKET, PFTM_ICMP_ERROR_REPLY,
68 PFTM_OTHER_FIRST_PACKET, PFTM_OTHER_SINGLE,
69 PFTM_OTHER_MULTIPLE, PFTM_FRAG, PFTM_INTERVAL,
70 PFTM_ADAPTIVE_START, PFTM_ADAPTIVE_END, PFTM_MAX,
71 PFTM_PURGE, PFTM_UNTIL_PACKET };
72enum { PF_NOPFROUTE, PF_FASTROUTE, PF_ROUTETO, PF_DUPTO, PF_REPLYTO };
73enum { PF_LIMIT_STATES, PF_LIMIT_FRAGS, PF_LIMIT_MAX };
74#define PF_POOL_IDMASK 0x0f
75enum { PF_POOL_NONE, PF_POOL_BITMASK, PF_POOL_RANDOM,
76 PF_POOL_SRCHASH, PF_POOL_ROUNDROBIN };
77enum { PF_ADDR_ADDRMASK, PF_ADDR_NOROUTE, PF_ADDR_DYNIFTL,
78 PF_ADDR_TABLE };
79#define PF_POOL_TYPEMASK 0x0f
80#define PF_WSCALE_FLAG 0x80
81#define PF_WSCALE_MASK 0x0f
82
83struct pf_addr {
84 union {
85 struct in_addr v4;
86 struct in6_addr v6;
87 u_int8_t addr8[16];
88 u_int16_t addr16[8];
89 u_int32_t addr32[4];
90 } pfa; /* 128-bit address */
91#define v4 pfa.v4
92#define v6 pfa.v6
93#define addr8 pfa.addr8
94#define addr16 pfa.addr16
95#define addr32 pfa.addr32
96};
97
98#define PF_TABLE_NAME_SIZE 32
99
100struct pf_addr_wrap {
101 union {
102 struct {
103 struct pf_addr addr;
104 struct pf_addr mask;
105 } a;
106 char ifname[IFNAMSIZ];
107 char tblname[PF_TABLE_NAME_SIZE];
108 } v;
109 union {
110 struct pf_addr_dyn *dyn;
111 struct pfr_ktable *tbl;
112 int tblcnt;
113 } p;
114 u_int8_t type; /* PF_ADDR_* */
115};
116
117struct pf_addr_dyn {
118 char ifname[IFNAMSIZ];
119 struct ifnet *ifp;
120 struct pf_addr *addr;
121 sa_family_t af;
122 void *hook_cookie;
123 u_int8_t undefined;
124};
125
126/*
127 * Address manipulation macros
128 */
129
130#ifdef _KERNEL
131
132#ifdef INET
133#ifndef INET6
134#define PF_INET_ONLY
135#endif /* ! INET6 */
136#endif /* INET */
137
138#ifdef INET6
139#ifndef INET
140#define PF_INET6_ONLY
141#endif /* ! INET */
142#endif /* INET6 */
143
144#ifdef INET
145#ifdef INET6
146#define PF_INET_INET6
147#endif /* INET6 */
148#endif /* INET */
149
150#else
151
152#define PF_INET_INET6
153
154#endif /* _KERNEL */
155
156/* Both IPv4 and IPv6 */
157#ifdef PF_INET_INET6
158
159#define PF_AEQ(a, b, c) \
160 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \
161 ((a)->addr32[3] == (b)->addr32[3] && \
162 (a)->addr32[2] == (b)->addr32[2] && \
163 (a)->addr32[1] == (b)->addr32[1] && \
164 (a)->addr32[0] == (b)->addr32[0])) \
165
166#define PF_ANEQ(a, b, c) \
167 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \
168 ((a)->addr32[3] != (b)->addr32[3] || \
169 (a)->addr32[2] != (b)->addr32[2] || \
170 (a)->addr32[1] != (b)->addr32[1] || \
171 (a)->addr32[0] != (b)->addr32[0])) \
172
173#define PF_AZERO(a, c) \
174 ((c == AF_INET && !(a)->addr32[0]) || \
175 (!(a)->addr32[0] && !(a)->addr32[1] && \
176 !(a)->addr32[2] && !(a)->addr32[3] )) \
177
178#define PF_MATCHA(n, a, m, b, f) \
179 pf_match_addr(n, a, m, b, f)
180
181#define PF_ACPY(a, b, f) \
182 pf_addrcpy(a, b, f)
183
184#define PF_AINC(a, f) \
185 pf_addr_inc(a, f)
186
187#define PF_POOLMASK(a, b, c, d, f) \
188 pf_poolmask(a, b, c, d, f)
189
190#else
191
192/* Just IPv6 */
193
194#ifdef PF_INET6_ONLY
195
196#define PF_AEQ(a, b, c) \
197 ((a)->addr32[3] == (b)->addr32[3] && \
198 (a)->addr32[2] == (b)->addr32[2] && \
199 (a)->addr32[1] == (b)->addr32[1] && \
200 (a)->addr32[0] == (b)->addr32[0]) \
201
202#define PF_ANEQ(a, b, c) \
203 ((a)->addr32[3] != (b)->addr32[3] || \
204 (a)->addr32[2] != (b)->addr32[2] || \
205 (a)->addr32[1] != (b)->addr32[1] || \
206 (a)->addr32[0] != (b)->addr32[0]) \
207
208#define PF_AZERO(a, c) \
209 (!(a)->addr32[0] && \
210 !(a)->addr32[1] && \
211 !(a)->addr32[2] && \
212 !(a)->addr32[3] ) \
213
214#define PF_MATCHA(n, a, m, b, f) \
215 pf_match_addr(n, a, m, b, f)
216
217#define PF_ACPY(a, b, f) \
218 pf_addrcpy(a, b, f)
219
220#define PF_AINC(a, f) \
221 pf_addr_inc(a, f)
222
223#define PF_POOLMASK(a, b, c, d, f) \
224 pf_poolmask(a, b, c, d, f)
225
226#else
227
228/* Just IPv4 */
229#ifdef PF_INET_ONLY
230
231#define PF_AEQ(a, b, c) \
232 ((a)->addr32[0] == (b)->addr32[0])
233
234#define PF_ANEQ(a, b, c) \
235 ((a)->addr32[0] != (b)->addr32[0])
236
237#define PF_AZERO(a, c) \
238 (!(a)->addr32[0])
239
240#define PF_MATCHA(n, a, m, b, f) \
241 pf_match_addr(n, a, m, b, f)
242
243#define PF_ACPY(a, b, f) \
244 (a)->v4.s_addr = (b)->v4.s_addr
245
246#define PF_AINC(a, f) \
247 do { \
248 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \
249 } while (0)
250
251#define PF_POOLMASK(a, b, c, d, f) \
252 do { \
253 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \
254 (((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \
255 } while (0)
256
257#endif /* PF_INET_ONLY */
258#endif /* PF_INET6_ONLY */
259#endif /* PF_INET_INET6 */
260
261#define PF_MISMATCHAW(aw, x, af, not) \
262 ( \
263 (((aw)->type == PF_ADDR_NOROUTE && \
264 pf_routable((x), (af))) || \
265 ((aw)->type == PF_ADDR_TABLE && \
266 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \
267 ((aw)->type == PF_ADDR_DYNIFTL && \
268 ((aw)->p.dyn->undefined || \
269 (!PF_AZERO(&(aw)->v.a.mask, (af)) && \
270 !PF_MATCHA(0, &(aw)->v.a.addr, \
271 &(aw)->v.a.mask, (x), (af))))) || \
272 ((aw)->type == PF_ADDR_ADDRMASK && \
273 !PF_AZERO(&(aw)->v.a.mask, (af)) && \
274 !PF_MATCHA(0, &(aw)->v.a.addr, \
275 &(aw)->v.a.mask, (x), (af)))) != \
276 (not) \
277 )
278
279struct pf_rule_uid {
280 uid_t uid[2];
281 u_int8_t op;
282};
283
284struct pf_rule_gid {
285 uid_t gid[2];
286 u_int8_t op;
287};
288
289struct pf_rule_addr {
290 struct pf_addr_wrap addr;
291 u_int16_t port[2];
292 u_int8_t not;
293 u_int8_t port_op;
294};
295
296struct pf_pooladdr {
297 struct pf_addr_wrap addr;
298 TAILQ_ENTRY(pf_pooladdr) entries;
299 char ifname[IFNAMSIZ];
300 struct ifnet *ifp;
301};
302
303TAILQ_HEAD(pf_palist, pf_pooladdr);
304
305struct pf_poolhashkey {
306 union {
307 u_int8_t key8[16];
308 u_int16_t key16[8];
309 u_int32_t key32[4];
310 } pfk; /* 128-bit hash key */
311#define key8 pfk.key8
312#define key16 pfk.key16
313#define key32 pfk.key32
314};
315
316struct pf_pool {
317 struct pf_palist list;
318 struct pf_pooladdr *cur;
319 struct pf_poolhashkey key;
320 struct pf_addr counter;
321 int tblidx;
322 u_int16_t proxy_port[2];
323 u_int8_t port_op;
324 u_int8_t opts;
325};
326
327
328/* A packed Operating System description for fingerprinting */
329typedef u_int32_t pf_osfp_t;
330#define PF_OSFP_ANY ((pf_osfp_t)0)
331#define PF_OSFP_UNKNOWN ((pf_osfp_t)-1)
332#define PF_OSFP_NOMATCH ((pf_osfp_t)-2)
333
334struct pf_osfp_entry {
335 SLIST_ENTRY(pf_osfp_entry) fp_entry;
336 pf_osfp_t fp_os;
337 int fp_enflags;
338#define PF_OSFP_EXPANDED 0x001 /* expanded entry */
339#define PF_OSFP_GENERIC 0x002 /* generic signature */
340#define PF_OSFP_NODETAIL 0x004 /* no p0f details */
341#define PF_OSFP_LEN 32
342 char fp_class_nm[PF_OSFP_LEN];
343 char fp_version_nm[PF_OSFP_LEN];
344 char fp_subtype_nm[PF_OSFP_LEN];
345};
346#define PF_OSFP_ENTRY_EQ(a, b) \
347 ((a)->fp_os == (b)->fp_os && \
348 memcmp((a)->fp_class_nm, (b)->fp_class_nm, PF_OSFP_LEN) == 0 && \
349 memcmp((a)->fp_version_nm, (b)->fp_version_nm, PF_OSFP_LEN) == 0 && \
350 memcmp((a)->fp_subtype_nm, (b)->fp_subtype_nm, PF_OSFP_LEN) == 0)
351
352/* handle pf_osfp_t packing */
353#define _FP_RESERVED_BIT 1 /* For the special negative #defines */
354#define _FP_UNUSED_BITS 1
355#define _FP_CLASS_BITS 10 /* OS Class (Windows, Linux) */
356#define _FP_VERSION_BITS 10 /* OS version (95, 98, NT, 2.4.54, 3.2) */
357#define _FP_SUBTYPE_BITS 10 /* patch level (NT SP4, SP3, ECN patch) */
358#define PF_OSFP_UNPACK(osfp, class, version, subtype) do { \
359 (class) = ((osfp) >> (_FP_VERSION_BITS+_FP_SUBTYPE_BITS)) & \
360 ((1 << _FP_CLASS_BITS) - 1); \
361 (version) = ((osfp) >> _FP_SUBTYPE_BITS) & \
362 ((1 << _FP_VERSION_BITS) - 1);\
363 (subtype) = (osfp) & ((1 << _FP_SUBTYPE_BITS) - 1); \
364} while(0)
365#define PF_OSFP_PACK(osfp, class, version, subtype) do { \
366 (osfp) = ((class) & ((1 << _FP_CLASS_BITS) - 1)) << (_FP_VERSION_BITS \
367 + _FP_SUBTYPE_BITS); \
368 (osfp) |= ((version) & ((1 << _FP_VERSION_BITS) - 1)) << \
369 _FP_SUBTYPE_BITS; \
370 (osfp) |= (subtype) & ((1 << _FP_SUBTYPE_BITS) - 1); \
371} while(0)
372
373/* the fingerprint of an OSes TCP SYN packet */
374typedef u_int64_t pf_tcpopts_t;
375struct pf_os_fingerprint {
376 SLIST_HEAD(pf_osfp_enlist, pf_osfp_entry) fp_oses; /* list of matches */
377 pf_tcpopts_t fp_tcpopts; /* packed TCP options */
378 u_int16_t fp_wsize; /* TCP window size */
379 u_int16_t fp_psize; /* ip->ip_len */
380 u_int16_t fp_mss; /* TCP MSS */
381 u_int16_t fp_flags;
382#define PF_OSFP_WSIZE_MOD 0x0001 /* Window modulus */
383#define PF_OSFP_WSIZE_DC 0x0002 /* Window don't care */
384#define PF_OSFP_WSIZE_MSS 0x0004 /* Window multiple of MSS */
385#define PF_OSFP_WSIZE_MTU 0x0008 /* Window multiple of MTU */
386#define PF_OSFP_PSIZE_MOD 0x0010 /* packet size modulus */
387#define PF_OSFP_PSIZE_DC 0x0020 /* packet size don't care */
388#define PF_OSFP_WSCALE 0x0040 /* TCP window scaling */
389#define PF_OSFP_WSCALE_MOD 0x0080 /* TCP window scale modulus */
390#define PF_OSFP_WSCALE_DC 0x0100 /* TCP window scale dont-care */
391#define PF_OSFP_MSS 0x0200 /* TCP MSS */
392#define PF_OSFP_MSS_MOD 0x0400 /* TCP MSS modulus */
393#define PF_OSFP_MSS_DC 0x0800 /* TCP MSS dont-care */
394#define PF_OSFP_DF 0x1000 /* IPv4 don't fragment bit */
395#define PF_OSFP_TS0 0x2000 /* Zero timestamp */
396 u_int8_t fp_optcnt; /* TCP option count */
397 u_int8_t fp_wscale; /* TCP window scaling */
398 u_int8_t fp_ttl; /* IPv4 TTL */
399#define PF_OSFP_MAXTTL_OFFSET 40
400/* TCP options packing */
401#define PF_OSFP_TCPOPT_NOP 0x0 /* TCP NOP option */
402#define PF_OSFP_TCPOPT_WSCALE 0x1 /* TCP window scaling option */
403#define PF_OSFP_TCPOPT_MSS 0x2 /* TCP max segment size opt */
404#define PF_OSFP_TCPOPT_SACK 0x3 /* TCP SACK OK option */
405#define PF_OSFP_TCPOPT_TS 0x4 /* TCP timestamp option */
406#define PF_OSFP_TCPOPT_BITS 3 /* bits used by each option */
407#define PF_OSFP_MAX_OPTS \
408 (sizeof(((struct pf_os_fingerprint *)0)->fp_tcpopts) * 8) \
409 / PF_OSFP_TCPOPT_BITS
410
411 SLIST_ENTRY(pf_os_fingerprint) fp_next;
412};
413
414struct pf_osfp_ioctl {
415 struct pf_osfp_entry fp_os;
416 pf_tcpopts_t fp_tcpopts; /* packed TCP options */
417 u_int16_t fp_wsize; /* TCP window size */
418 u_int16_t fp_psize; /* ip->ip_len */
419 u_int16_t fp_mss; /* TCP MSS */
420 u_int16_t fp_flags;
421 u_int8_t fp_optcnt; /* TCP option count */
422 u_int8_t fp_wscale; /* TCP window scaling */
423 u_int8_t fp_ttl; /* IPv4 TTL */
424
425 int fp_getnum; /* DIOCOSFPGET number */
426};
427
428
429union pf_rule_ptr {
430 struct pf_rule *ptr;
431 u_int32_t nr;
432};
433
434struct pf_rule {
435 struct pf_rule_addr src;
436 struct pf_rule_addr dst;
437#define PF_SKIP_IFP 0
438#define PF_SKIP_DIR 1
439#define PF_SKIP_AF 2
440#define PF_SKIP_PROTO 3
441#define PF_SKIP_SRC_ADDR 4
442#define PF_SKIP_SRC_PORT 5
443#define PF_SKIP_DST_ADDR 6
444#define PF_SKIP_DST_PORT 7
445#define PF_SKIP_COUNT 8
446 union pf_rule_ptr skip[PF_SKIP_COUNT];
447#define PF_RULE_LABEL_SIZE 64
448 char label[PF_RULE_LABEL_SIZE];
449 u_int32_t timeout[PFTM_MAX];
450#define PF_QNAME_SIZE 16
451 char ifname[IFNAMSIZ];
452 char qname[PF_QNAME_SIZE];
453 char pqname[PF_QNAME_SIZE];
454#define PF_ANCHOR_NAME_SIZE 16
455 char anchorname[PF_ANCHOR_NAME_SIZE];
456#define PF_TAG_NAME_SIZE 16
457 char tagname[PF_TAG_NAME_SIZE];
458 char match_tagname[PF_TAG_NAME_SIZE];
459
460 TAILQ_ENTRY(pf_rule) entries;
461 struct pf_pool rpool;
462
463 u_int64_t evaluations;
464 u_int64_t packets;
465 u_int64_t bytes;
466
467 struct ifnet *ifp;
468 struct pf_anchor *anchor;
469
470 pf_osfp_t os_fingerprint;
471 u_int32_t states;
472 u_int32_t max_states;
473 u_int32_t qid;
474 u_int32_t pqid;
475 u_int32_t rt_listid;
476 u_int32_t nr;
477
478 u_int16_t return_icmp;
479 u_int16_t return_icmp6;
480 u_int16_t max_mss;
481 u_int16_t tag;
482 u_int16_t match_tag;
483
484 struct pf_rule_uid uid;
485 struct pf_rule_gid gid;
486
487 u_int32_t rule_flag;
488 u_int8_t action;
489 u_int8_t direction;
490 u_int8_t log;
491 u_int8_t quick;
492 u_int8_t ifnot;
493 u_int8_t match_tag_not;
494 u_int8_t natpass;
495
496#define PF_STATE_NORMAL 0x1
497#define PF_STATE_MODULATE 0x2
498#define PF_STATE_SYNPROXY 0x3
499 u_int8_t keep_state;
500 sa_family_t af;
501 u_int8_t proto;
502 u_int8_t type;
503 u_int8_t code;
504 u_int8_t flags;
505 u_int8_t flagset;
506 u_int8_t min_ttl;
507 u_int8_t allow_opts;
508 u_int8_t rt;
509 u_int8_t return_ttl;
510 u_int8_t tos;
511};
512
513/* rule flags */
514#define PFRULE_DROP 0x0000
515#define PFRULE_RETURNRST 0x0001
516#define PFRULE_FRAGMENT 0x0002
517#define PFRULE_RETURNICMP 0x0004
518#define PFRULE_RETURN 0x0008
519
520/* scrub flags */
521#define PFRULE_NODF 0x0100
522#define PFRULE_FRAGCROP 0x0200 /* non-buffering frag cache */
523#define PFRULE_FRAGDROP 0x0400 /* drop funny fragments */
524#define PFRULE_RANDOMID 0x0800
525#define PFRULE_REASSEMBLE_TCP 0x1000
526
527#define PFSTATE_HIWAT 10000 /* default state table size */
528
529
530struct pf_state_scrub {
531 u_int16_t pfss_flags;
532#define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */
533 u_int8_t pfss_ttl; /* stashed TTL */
534 u_int8_t pad;
535 u_int32_t pfss_ts_mod; /* timestamp modulation */
536};
537
538struct pf_state_host {
539 struct pf_addr addr;
540 u_int16_t port;
541 u_int16_t pad;
542};
543
544struct pf_state_peer {
545 u_int32_t seqlo; /* Max sequence number sent */
546 u_int32_t seqhi; /* Max the other end ACKd + win */
547 u_int32_t seqdiff; /* Sequence number modulator */
548 u_int16_t max_win; /* largest window (pre scaling) */
549 u_int8_t state; /* active state level */
550 u_int8_t wscale; /* window scaling factor */
551 u_int16_t mss; /* Maximum segment size option */
552 struct pf_state_scrub *scrub; /* state is scrubbed */
553};
554
555struct pf_state {
556 struct pf_state_host lan;
557 struct pf_state_host gwy;
558 struct pf_state_host ext;
559 struct pf_state_peer src;
560 struct pf_state_peer dst;
561 union pf_rule_ptr rule;
562 union pf_rule_ptr anchor;
563 union pf_rule_ptr nat_rule;
564 struct pf_addr rt_addr;
565 struct ifnet *rt_ifp;
566 u_int32_t creation;
567 u_int32_t expire;
568 u_int32_t packets[2];
569 u_int32_t bytes[2];
570 sa_family_t af;
571 u_int8_t proto;
572 u_int8_t direction;
573 u_int8_t log;
574 u_int8_t allow_opts;
575 u_int8_t timeout;
576 u_int8_t pad[2];
577};
578
579struct pf_tree_node {
580 RB_ENTRY(pf_tree_node) entry;
581 struct pf_state *state;
582 struct pf_addr addr[2];
583 u_int16_t port[2];
584 sa_family_t af;
585 u_int8_t proto;
586};
587
588TAILQ_HEAD(pf_rulequeue, pf_rule);
589
590struct pf_anchor;
591
592struct pf_ruleset {
593 TAILQ_ENTRY(pf_ruleset) entries;
594#define PF_RULESET_NAME_SIZE 16
595 char name[PF_RULESET_NAME_SIZE];
596 struct {
597 struct pf_rulequeue queues[2];
598 struct {
599 struct pf_rulequeue *ptr;
600 u_int32_t ticket;
601 } active, inactive;
602 } rules[PF_RULESET_MAX];
603 struct pf_anchor *anchor;
604 u_int32_t tticket;
605 int tables;
606 int topen;
607};
608
609TAILQ_HEAD(pf_rulesetqueue, pf_ruleset);
610
611struct pf_anchor {
612 TAILQ_ENTRY(pf_anchor) entries;
613 char name[PF_ANCHOR_NAME_SIZE];
614 struct pf_rulesetqueue rulesets;
615 int tables;
616};
617
618TAILQ_HEAD(pf_anchorqueue, pf_anchor);
619
620#define PFR_TFLAG_PERSIST 0x00000001
621#define PFR_TFLAG_CONST 0x00000002
622#define PFR_TFLAG_ACTIVE 0x00000004
623#define PFR_TFLAG_INACTIVE 0x00000008
624#define PFR_TFLAG_REFERENCED 0x00000010
625#define PFR_TFLAG_REFDANCHOR 0x00000020
626#define PFR_TFLAG_USRMASK 0x00000003
627#define PFR_TFLAG_SETMASK 0x0000003C
628#define PFR_TFLAG_ALLMASK 0x0000003F
629
630struct pfr_table {
631 char pfrt_anchor[PF_ANCHOR_NAME_SIZE];
632 char pfrt_ruleset[PF_RULESET_NAME_SIZE];
633 char pfrt_name[PF_TABLE_NAME_SIZE];
634 u_int32_t pfrt_flags;
635 u_int8_t pfrt_fback;
636};
637
638enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED,
639 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE,
640 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_MAX };
641
642struct pfr_addr {
643 union {
644 struct in_addr _pfra_ip4addr;
645 struct in6_addr _pfra_ip6addr;
646 } pfra_u;
647 u_int8_t pfra_af;
648 u_int8_t pfra_net;
649 u_int8_t pfra_not;
650 u_int8_t pfra_fback;
651};
652#define pfra_ip4addr pfra_u._pfra_ip4addr
653#define pfra_ip6addr pfra_u._pfra_ip6addr
654
655enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX };
656enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX };
657#define PFR_OP_XPASS PFR_OP_ADDR_MAX
658
659struct pfr_astats {
660 struct pfr_addr pfras_a;
661 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
662 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
663 long pfras_tzero;
664};
665
666enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX };
667
668struct pfr_tstats {
669 struct pfr_table pfrts_t;
670 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
671 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
672 u_int64_t pfrts_match;
673 u_int64_t pfrts_nomatch;
674 long pfrts_tzero;
675 int pfrts_cnt;
676 int pfrts_refcnt[PFR_REFCNT_MAX];
677};
678#define pfrts_name pfrts_t.pfrt_name
679#define pfrts_flags pfrts_t.pfrt_flags
680
681SLIST_HEAD(pfr_kentryworkq, pfr_kentry);
682struct pfr_kentry {
683 struct radix_node pfrke_node[2];
684 union sockaddr_union pfrke_sa;
685 u_int64_t pfrke_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
686 u_int64_t pfrke_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
687 SLIST_ENTRY(pfr_kentry) pfrke_workq;
688 long pfrke_tzero;
689 u_int8_t pfrke_af;
690 u_int8_t pfrke_net;
691 u_int8_t pfrke_not;
692 u_int8_t pfrke_mark;
693};
694
695SLIST_HEAD(pfr_ktableworkq, pfr_ktable);
696RB_HEAD(pfr_ktablehead, pfr_ktable);
697struct pfr_ktable {
698 struct pfr_tstats pfrkt_ts;
699 RB_ENTRY(pfr_ktable) pfrkt_tree;
700 SLIST_ENTRY(pfr_ktable) pfrkt_workq;
701 struct radix_node_head *pfrkt_ip4;
702 struct radix_node_head *pfrkt_ip6;
703 struct pfr_ktable *pfrkt_shadow;
704 struct pfr_ktable *pfrkt_root;
705 struct pf_ruleset *pfrkt_rs;
706 int pfrkt_nflags;
707};
708#define pfrkt_t pfrkt_ts.pfrts_t
709#define pfrkt_name pfrkt_t.pfrt_name
710#define pfrkt_anchor pfrkt_t.pfrt_anchor
711#define pfrkt_ruleset pfrkt_t.pfrt_ruleset
712#define pfrkt_flags pfrkt_t.pfrt_flags
713#define pfrkt_cnt pfrkt_ts.pfrts_cnt
714#define pfrkt_refcnt pfrkt_ts.pfrts_refcnt
715#define pfrkt_packets pfrkt_ts.pfrts_packets
716#define pfrkt_bytes pfrkt_ts.pfrts_bytes
717#define pfrkt_match pfrkt_ts.pfrts_match
718#define pfrkt_nomatch pfrkt_ts.pfrts_nomatch
719#define pfrkt_tzero pfrkt_ts.pfrts_tzero
720
721struct pf_pdesc {
722 u_int64_t tot_len; /* Make Mickey money */
723 union {
724 struct tcphdr *tcp;
725 struct udphdr *udp;
726 struct icmp *icmp;
727#ifdef INET6
728 struct icmp6_hdr *icmp6;
729#endif /* INET6 */
730 void *any;
731 } hdr;
732 struct pf_addr *src;
733 struct pf_addr *dst;
734 u_int16_t *ip_sum;
735 u_int32_t p_len; /* total length of payload */
736 u_int16_t flags; /* Let SCRUB trigger behavior in
737 * state code. Easier than tags */
738#define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */
739 sa_family_t af;
740 u_int8_t proto;
741 u_int8_t tos;
742};
743
744/* flags for RDR options */
745#define PF_DPORT_RANGE 0x01 /* Dest port uses range */
746#define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */
747
748/* Reasons code for passing/dropping a packet */
749#define PFRES_MATCH 0 /* Explicit match of a rule */
750#define PFRES_BADOFF 1 /* Bad offset for pull_hdr */
751#define PFRES_FRAG 2 /* Dropping following fragment */
752#define PFRES_SHORT 3 /* Dropping short packet */
753#define PFRES_NORM 4 /* Dropping by normalizer */
754#define PFRES_MEMORY 5 /* Dropped due to lacking mem */
755#define PFRES_MAX 6 /* total+1 */
756
757#define PFRES_NAMES { \
758 "match", \
759 "bad-offset", \
760 "fragment", \
761 "short", \
762 "normalize", \
763 "memory", \
764 NULL \
765}
766
767/* UDP state enumeration */
768#define PFUDPS_NO_TRAFFIC 0
769#define PFUDPS_SINGLE 1
770#define PFUDPS_MULTIPLE 2
771
772#define PFUDPS_NSTATES 3 /* number of state levels */
773
774#define PFUDPS_NAMES { \
775 "NO_TRAFFIC", \
776 "SINGLE", \
777 "MULTIPLE", \
778 NULL \
779}
780
781/* Other protocol state enumeration */
782#define PFOTHERS_NO_TRAFFIC 0
783#define PFOTHERS_SINGLE 1
784#define PFOTHERS_MULTIPLE 2
785
786#define PFOTHERS_NSTATES 3 /* number of state levels */
787
788#define PFOTHERS_NAMES { \
789 "NO_TRAFFIC", \
790 "SINGLE", \
791 "MULTIPLE", \
792 NULL \
793}
794
795#define FCNT_STATE_SEARCH 0
796#define FCNT_STATE_INSERT 1
797#define FCNT_STATE_REMOVALS 2
798#define FCNT_MAX 3
799
800
801#define ACTION_SET(a, x) \
802 do { \
803 if ((a) != NULL) \
804 *(a) = (x); \
805 } while (0)
806
807#define REASON_SET(a, x) \
808 do { \
809 if ((a) != NULL) \
810 *(a) = (x); \
811 if (x < PFRES_MAX) \
812 pf_status.counters[x]++; \
813 } while (0)
814
815struct pf_status {
816 u_int64_t counters[PFRES_MAX];
817 u_int64_t fcounters[FCNT_MAX];
818 u_int64_t pcounters[2][2][3];
819 u_int64_t bcounters[2][2];
820 u_int32_t running;
821 u_int32_t states;
822 u_int32_t since;
823 u_int32_t debug;
824 char ifname[IFNAMSIZ];
825};
826
827struct cbq_opts {
828 u_int minburst;
829 u_int maxburst;
830 u_int pktsize;
831 u_int maxpktsize;
832 u_int ns_per_byte;
833 u_int maxidle;
834 int minidle;
835 u_int offtime;
836 int flags;
837};
838
839struct priq_opts {
840 int flags;
841};
842
843struct hfsc_opts {
844 /* real-time service curve */
845 u_int rtsc_m1; /* slope of the 1st segment in bps */
846 u_int rtsc_d; /* the x-projection of m1 in msec */
847 u_int rtsc_m2; /* slope of the 2nd segment in bps */
848 /* link-sharing service curve */
849 u_int lssc_m1;
850 u_int lssc_d;
851 u_int lssc_m2;
852 /* upper-limit service curve */
853 u_int ulsc_m1;
854 u_int ulsc_d;
855 u_int ulsc_m2;
856 int flags;
857};
858
859struct pf_altq {
860 char ifname[IFNAMSIZ];
861
862 void *altq_disc; /* discipline-specific state */
863 TAILQ_ENTRY(pf_altq) entries;
864
865 /* scheduler spec */
866 u_int8_t scheduler; /* scheduler type */
867 u_int16_t tbrsize; /* tokenbucket regulator size */
868 u_int32_t ifbandwidth; /* interface bandwidth */
869
870 /* queue spec */
871 char qname[PF_QNAME_SIZE]; /* queue name */
872 char parent[PF_QNAME_SIZE]; /* parent name */
873 u_int32_t parent_qid; /* parent queue id */
874 u_int32_t bandwidth; /* queue bandwidth */
875 u_int8_t priority; /* priority */
876 u_int16_t qlimit; /* queue size limit */
877 u_int16_t flags; /* misc flags */
878 union {
879 struct cbq_opts cbq_opts;
880 struct priq_opts priq_opts;
881 struct hfsc_opts hfsc_opts;
882 } pq_u;
883
884 u_int32_t qid; /* return value */
885};
886
887struct pf_tag {
888 u_int16_t tag; /* tag id */
889};
890
891struct pf_tagname {
892 TAILQ_ENTRY(pf_tagname) entries;
893 char name[PF_TAG_NAME_SIZE];
894 u_int16_t tag;
895 int ref;
896};
897
898#define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */
899#define PFFRAG_FRAG_HIWAT 1000 /* Number of fragmented packets */
900#define PFFRAG_FRCENT_HIWAT 50000 /* Number of fragment cache entries */
901#define PFFRAG_FRCACHE_HIWAT 10000 /* Number of fragment descriptors */
902
903/*
904 * ioctl parameter structures
905 */
906
907struct pfioc_pooladdr {
908 u_int32_t action;
909 u_int32_t ticket;
910 u_int32_t nr;
911 u_int32_t r_num;
912 u_int8_t r_action;
913 u_int8_t r_last;
914 u_int8_t af;
915 char anchor[PF_ANCHOR_NAME_SIZE];
916 char ruleset[PF_RULESET_NAME_SIZE];
917 struct pf_pooladdr addr;
918};
919
920struct pfioc_rule {
921 u_int32_t action;
922 u_int32_t ticket;
923 u_int32_t pool_ticket;
924 u_int32_t nr;
925 char anchor[PF_ANCHOR_NAME_SIZE];
926 char ruleset[PF_RULESET_NAME_SIZE];
927 struct pf_rule rule;
928};
929
930struct pfioc_natlook {
931 struct pf_addr saddr;
932 struct pf_addr daddr;
933 struct pf_addr rsaddr;
934 struct pf_addr rdaddr;
935 u_int16_t sport;
936 u_int16_t dport;
937 u_int16_t rsport;
938 u_int16_t rdport;
939 sa_family_t af;
940 u_int8_t proto;
941 u_int8_t direction;
942};
943
944struct pfioc_state {
945 u_int32_t nr;
946 struct pf_state state;
947};
948
949struct pfioc_state_kill {
950 /* XXX returns the number of states killed in psk_af */
951 sa_family_t psk_af;
952 int psk_proto;
953 struct pf_rule_addr psk_src;
954 struct pf_rule_addr psk_dst;
955};
956
957struct pfioc_states {
958 int ps_len;
959 union {
960 caddr_t psu_buf;
961 struct pf_state *psu_states;
962 } ps_u;
963#define ps_buf ps_u.psu_buf
964#define ps_states ps_u.psu_states
965};
966
967struct pfioc_if {
968 char ifname[IFNAMSIZ];
969};
970
971struct pfioc_tm {
972 int timeout;
973 int seconds;
974};
975
976struct pfioc_limit {
977 int index;
978 unsigned limit;
979};
980
981struct pfioc_altq {
982 u_int32_t action;
983 u_int32_t ticket;
984 u_int32_t nr;
985 struct pf_altq altq;
986};
987
988struct pfioc_qstats {
989 u_int32_t ticket;
990 u_int32_t nr;
991 void *buf;
992 int nbytes;
993 u_int8_t scheduler;
994};
995
996struct pfioc_anchor {
997 u_int32_t nr;
998 char name[PF_ANCHOR_NAME_SIZE];
999};
1000
1001struct pfioc_ruleset {
1002 u_int32_t nr;
1003 char anchor[PF_ANCHOR_NAME_SIZE];
1004 char name[PF_RULESET_NAME_SIZE];
1005};
1006
1007#define PFR_FLAG_ATOMIC 0x00000001
1008#define PFR_FLAG_DUMMY 0x00000002
1009#define PFR_FLAG_FEEDBACK 0x00000004
1010#define PFR_FLAG_CLSTATS 0x00000008
1011#define PFR_FLAG_ADDRSTOO 0x00000010
1012#define PFR_FLAG_REPLACE 0x00000020
1013#define PFR_FLAG_ALLRSETS 0x00000040
1014#define PFR_FLAG_ALLMASK 0x0000007F
1015
1016struct pfioc_table {
1017 struct pfr_table pfrio_table;
1018 void *pfrio_buffer;
1019 int pfrio_esize;
1020 int pfrio_size;
1021 int pfrio_size2;
1022 int pfrio_nadd;
1023 int pfrio_ndel;
1024 int pfrio_nchange;
1025 int pfrio_flags;
1026 u_int32_t pfrio_ticket;
1027};
1028#define pfrio_exists pfrio_nadd
1029#define pfrio_nzero pfrio_nadd
1030#define pfrio_nmatch pfrio_nadd
1031#define pfrio_naddr pfrio_size2
1032#define pfrio_setflag pfrio_size2
1033#define pfrio_clrflag pfrio_nadd
1034
1035
1036/*
1037 * ioctl operations
1038 */
1039
1040#define DIOCSTART _IO ('D', 1)
1041#define DIOCSTOP _IO ('D', 2)
1042#define DIOCBEGINRULES _IOWR('D', 3, struct pfioc_rule)
1043#define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule)
1044#define DIOCCOMMITRULES _IOWR('D', 5, struct pfioc_rule)
1045#define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule)
1046#define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule)
1047/* XXX cut 8 - 17 */
1048#define DIOCCLRSTATES _IO ('D', 18)
1049#define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state)
1050#define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if)
1051#define DIOCGETSTATUS _IOWR('D', 21, struct pf_status)
1052#define DIOCCLRSTATUS _IO ('D', 22)
1053#define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook)
1054#define DIOCSETDEBUG _IOWR('D', 24, u_int32_t)
1055#define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states)
1056#define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule)
1057/* XXX cut 26 - 28 */
1058#define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm)
1059#define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm)
1060#define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state)
1061#define DIOCCLRRULECTRS _IO ('D', 38)
1062#define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit)
1063#define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit)
1064#define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill)
1065#define DIOCSTARTALTQ _IO ('D', 42)
1066#define DIOCSTOPALTQ _IO ('D', 43)
1067#define DIOCBEGINALTQS _IOWR('D', 44, u_int32_t)
1068#define DIOCADDALTQ _IOWR('D', 45, struct pfioc_altq)
1069#define DIOCCOMMITALTQS _IOWR('D', 46, u_int32_t)
1070#define DIOCGETALTQS _IOWR('D', 47, struct pfioc_altq)
1071#define DIOCGETALTQ _IOWR('D', 48, struct pfioc_altq)
1072#define DIOCCHANGEALTQ _IOWR('D', 49, struct pfioc_altq)
1073#define DIOCGETQSTATS _IOWR('D', 50, struct pfioc_qstats)
1074#define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr)
1075#define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr)
1076#define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr)
1077#define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr)
1078#define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr)
1079#define DIOCGETANCHORS _IOWR('D', 56, struct pfioc_anchor)
1080#define DIOCGETANCHOR _IOWR('D', 57, struct pfioc_anchor)
1081#define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset)
1082#define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset)
1083#define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table)
1084#define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table)
1085#define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table)
1086#define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table)
1087#define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table)
1088#define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table)
1089#define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table)
1090#define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table)
1091#define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table)
1092#define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table)
1093#define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table)
1094#define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table)
1095#define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table)
1096#define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table)
1097#define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table)
1098#define DIOCRINABEGIN _IOWR('D', 75, struct pfioc_table)
1099#define DIOCRINACOMMIT _IOWR('D', 76, struct pfioc_table)
1100#define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table)
1101#define DIOCOSFPFLUSH _IO('D', 78)
1102#define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl)
1103#define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl)
1104
1105#ifdef _KERNEL
1106RB_HEAD(pf_state_tree, pf_tree_node);
1107RB_PROTOTYPE(pf_state_tree, pf_tree_node, entry, pf_state_compare);
1108extern struct pf_state_tree tree_lan_ext, tree_ext_gwy;
1109
1110extern struct pf_anchorqueue pf_anchors;
1111extern struct pf_ruleset pf_main_ruleset;
1112TAILQ_HEAD(pf_poolqueue, pf_pool);
1113extern struct pf_poolqueue pf_pools[2];
1114TAILQ_HEAD(pf_altqqueue, pf_altq);
1115extern struct pf_altqqueue pf_altqs[2];
1116extern struct pf_palist pf_pabuf;
1117
1118
1119extern u_int32_t ticket_altqs_active;
1120extern u_int32_t ticket_altqs_inactive;
1121extern u_int32_t ticket_pabuf;
1122extern struct pf_altqqueue *pf_altqs_active;
1123extern struct pf_altqqueue *pf_altqs_inactive;
1124extern struct pf_poolqueue *pf_pools_active;
1125extern struct pf_poolqueue *pf_pools_inactive;
1126extern int pf_tbladdr_setup(struct pf_ruleset *,
1127 struct pf_addr_wrap *);
1128extern void pf_tbladdr_remove(struct pf_addr_wrap *);
1129extern void pf_tbladdr_copyout(struct pf_addr_wrap *);
1130extern int pf_dynaddr_setup(struct pf_addr_wrap *,
1131 sa_family_t);
1132extern void pf_dynaddr_copyout(struct pf_addr_wrap *);
1133extern void pf_dynaddr_remove(struct pf_addr_wrap *);
1134extern void pf_calc_skip_steps(struct pf_rulequeue *);
1135extern void pf_rule_set_qid(struct pf_rulequeue *);
1136extern u_int32_t pf_qname_to_qid(char *);
1137extern void pf_update_anchor_rules(void);
1138extern struct pool pf_tree_pl, pf_rule_pl, pf_addr_pl;
1139extern struct pool pf_state_pl, pf_altq_pl, pf_pooladdr_pl;
1140extern struct pool pf_state_scrub_pl;
1141extern void pf_purge_timeout(void *);
1142extern void pf_purge_expired_states(void);
1143extern int pf_insert_state(struct pf_state *);
1144extern struct pf_state *pf_find_state(struct pf_state_tree *,
1145 struct pf_tree_node *);
1146extern struct pf_anchor *pf_find_anchor(const char *);
1147extern struct pf_ruleset *pf_find_ruleset(char *, char *);
1148extern struct pf_ruleset *pf_find_or_create_ruleset(char *, char *);
1149extern void pf_remove_if_empty_ruleset(
1150 struct pf_ruleset *);
1151
1152extern struct ifnet *status_ifp;
1153extern struct pf_rule pf_default_rule;
1154extern void pf_addrcpy(struct pf_addr *, struct pf_addr *,
1155 u_int8_t);
1156void pf_rm_rule(struct pf_rulequeue *,
1157 struct pf_rule *);
1158
1159#ifdef INET
1160int pf_test(int, struct ifnet *, struct mbuf **);
1161#endif /* INET */
1162
1163#ifdef INET6
1164int pf_test6(int, struct ifnet *, struct mbuf **);
1165void pf_poolmask(struct pf_addr *, struct pf_addr*,
1166 struct pf_addr *, struct pf_addr *, u_int8_t);
1167void pf_addr_inc(struct pf_addr *, sa_family_t);
1168#endif /* INET6 */
1169
1170void *pf_pull_hdr(struct mbuf *, int, void *, int, u_short *, u_short *,
1171 sa_family_t);
1172void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t);
1173int pflog_packet(struct ifnet *, struct mbuf *, sa_family_t, u_int8_t,
1174 u_int8_t, struct pf_rule *, struct pf_rule *, struct pf_ruleset *);
1175int pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *,
1176 struct pf_addr *, sa_family_t);
1177int pf_match(u_int8_t, u_int32_t, u_int32_t, u_int32_t);
1178int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t);
1179int pf_match_uid(u_int8_t, uid_t, uid_t, uid_t);
1180int pf_match_gid(u_int8_t, gid_t, gid_t, gid_t);
1181
1182void pf_normalize_init(void);
1183int pf_normalize_ip(struct mbuf **, int, struct ifnet *, u_short *);
1184int pf_normalize_ip6(struct mbuf **, int, struct ifnet *, u_short *);
1185int pf_normalize_tcp(int, struct ifnet *, struct mbuf *, int, int, void *,
1186 struct pf_pdesc *);
1187void pf_normalize_tcp_cleanup(struct pf_state *);
1188int pf_normalize_tcp_init(struct mbuf *, int, struct pf_pdesc *,
1189 struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *);
1190int pf_normalize_tcp_stateful(struct mbuf *, int, struct pf_pdesc *,
1191 u_short *, struct tcphdr *, struct pf_state_peer *,
1192 struct pf_state_peer *, int *);
1193u_int32_t
1194 pf_state_expires(const struct pf_state *);
1195void pf_purge_expired_fragments(void);
1196int pf_routable(struct pf_addr *addr, sa_family_t af);
1197void pfr_initialize(void);
1198int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t);
1199void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t,
1200 u_int64_t, int, int, int);
1201int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *,
1202 struct pf_addr **, struct pf_addr **, sa_family_t);
1203struct pfr_ktable *
1204 pfr_attach_table(struct pf_ruleset *, char *);
1205void pfr_detach_table(struct pfr_ktable *);
1206int pfr_clr_tables(struct pfr_table *, int *, int);
1207int pfr_add_tables(struct pfr_table *, int, int *, int);
1208int pfr_del_tables(struct pfr_table *, int, int *, int);
1209int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int);
1210int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int);
1211int pfr_clr_tstats(struct pfr_table *, int, int *, int);
1212int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int);
1213int pfr_clr_addrs(struct pfr_table *, int *, int);
1214int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
1215 int);
1216int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
1217 int);
1218int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
1219 int *, int *, int *, int);
1220int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int);
1221int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int);
1222int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *,
1223 int);
1224int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
1225 int);
1226int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int);
1227int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int);
1228int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *,
1229 int *, u_int32_t, int);
1230
1231u_int16_t pf_tagname2tag(char *);
1232void pf_tag2tagname(u_int16_t, char *);
1233void pf_tag_unref(u_int16_t);
1234int pf_tag_packet(struct mbuf *, struct pf_tag *, int);
1235
1236extern struct pf_status pf_status;
1237extern struct pool pf_frent_pl, pf_frag_pl;
1238
1239struct pf_pool_limit {
1240 void *pp;
1241 unsigned limit;
1242};
1243extern struct pf_pool_limit pf_pool_limits[PF_LIMIT_MAX];
1244
1245#endif /* _KERNEL */
1246
1247/* The fingerprint functions can be linked into userland programs (tcpdump) */
1248int pf_osfp_add(struct pf_osfp_ioctl *);
1249#ifdef _KERNEL
1250struct pf_osfp_enlist *
1251 pf_osfp_fingerprint(struct pf_pdesc *, struct mbuf *, int,
1252 const struct tcphdr *);
1253#endif /* _KERNEL */
1254struct pf_osfp_enlist *
1255 pf_osfp_fingerprint_hdr(const struct ip *, const struct tcphdr *);
1256void pf_osfp_flush(void);
1257int pf_osfp_get(struct pf_osfp_ioctl *);
1258void pf_osfp_initialize(void);
1259int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t);
1260struct pf_os_fingerprint *
1261 pf_osfp_validate(void);
1262
1263
1264#endif /* _NET_PFVAR_H_ */