1 /* $OpenBSD: pfvar.h,v 1.276 2008/07/03 15:46:23 henning Exp $ */
4 * Copyright (c) 2010 The DragonFly Project. All rights reserved.
6 * Copyright (c) 2001 Daniel Hartmeier
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
13 * - Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * - Redistributions in binary form must reproduce the above
16 * copyright notice, this list of conditions and the following
17 * disclaimer in the documentation and/or other materials provided
18 * with the distribution.
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
24 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
27 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
28 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
30 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
31 * POSSIBILITY OF SUCH DAMAGE.
38 #include <sys/param.h>
39 #include <sys/types.h>
40 #include <sys/limits.h>
41 #include <sys/ioccom.h>
42 #include <sys/queue.h>
46 #include <net/radix.h>
47 #include <net/if_clone.h>
48 #include <netinet/in.h>
49 #include <netinet/in_pcb.h>
54 * If we include <netipsec/keydb.h>, we need _KERNEL definition.
55 * This makes pfctl compilation difficult.
57 union sockaddr_union {
59 struct sockaddr_in sin;
60 struct sockaddr_in6 sin6;
63 #include <netinet/tcp_fsm.h>
68 extern struct lwkt_token pf_token;
70 #define PF_TCPS_PROXY_SRC ((TCP_NSTATES)+0)
71 #define PF_TCPS_PROXY_DST ((TCP_NSTATES)+1)
74 #define RTLABEL_LEN 32
75 #define IFG_ALL "all" /* group contains all interfaces */
76 #define BPF_DIRECTION_OUT (1<<1)
79 #define ALTQ_IS_ENABLED(ifq) ((ifq)->altq_flags & ALTQF_ENABLED)
82 #define PF_MD5_DIGEST_LENGTH 16
83 #ifdef MD5_DIGEST_LENGTH
84 #if PF_MD5_DIGEST_LENGTH != MD5_DIGEST_LENGTH
89 enum { PF_INOUT, PF_IN, PF_OUT };
90 enum { PF_PASS, PF_DROP, PF_SCRUB, PF_NOSCRUB, PF_NAT, PF_NONAT,
91 PF_BINAT, PF_NOBINAT, PF_RDR, PF_NORDR, PF_SYNPROXY_DROP };
92 enum { PF_RULESET_SCRUB, PF_RULESET_FILTER, PF_RULESET_NAT,
93 PF_RULESET_BINAT, PF_RULESET_RDR, PF_RULESET_MAX };
94 enum { PF_OP_NONE, PF_OP_IRG, PF_OP_EQ, PF_OP_NE, PF_OP_LT,
95 PF_OP_LE, PF_OP_GT, PF_OP_GE, PF_OP_XRG, PF_OP_RRG };
96 enum { PF_DEBUG_NONE, PF_DEBUG_URGENT, PF_DEBUG_MISC, PF_DEBUG_NOISY };
97 enum { PF_CHANGE_NONE, PF_CHANGE_ADD_HEAD, PF_CHANGE_ADD_TAIL,
98 PF_CHANGE_ADD_BEFORE, PF_CHANGE_ADD_AFTER,
99 PF_CHANGE_REMOVE, PF_CHANGE_GET_TICKET };
100 enum { PF_GET_NONE, PF_GET_CLR_CNTR };
101 enum { PF_SK_WIRE, PF_SK_STACK, PF_SK_BOTH };
104 * Note about PFTM_*: real indices into pf_rule.timeout[] come before
105 * PFTM_MAX, special cases afterwards. See pf_state_expires().
107 enum { PFTM_TCP_FIRST_PACKET, PFTM_TCP_OPENING, PFTM_TCP_ESTABLISHED,
108 PFTM_TCP_CLOSING, PFTM_TCP_FIN_WAIT, PFTM_TCP_CLOSED,
109 PFTM_UDP_FIRST_PACKET, PFTM_UDP_SINGLE, PFTM_UDP_MULTIPLE,
110 PFTM_ICMP_FIRST_PACKET, PFTM_ICMP_ERROR_REPLY,
111 PFTM_OTHER_FIRST_PACKET, PFTM_OTHER_SINGLE,
112 PFTM_OTHER_MULTIPLE, PFTM_FRAG, PFTM_INTERVAL,
113 PFTM_ADAPTIVE_START, PFTM_ADAPTIVE_END, PFTM_SRC_NODE,
114 PFTM_TS_DIFF, PFTM_MAX, PFTM_PURGE, PFTM_UNLINKED,
117 /* PFTM default values */
118 #define PFTM_TCP_FIRST_PACKET_VAL 120 /* First TCP packet */
119 #define PFTM_TCP_OPENING_VAL 30 /* No response yet */
120 #define PFTM_TCP_ESTABLISHED_VAL 24*60*60/* Established */
121 #define PFTM_TCP_CLOSING_VAL 15 * 60 /* Half closed */
122 #define PFTM_TCP_FIN_WAIT_VAL 45 /* Got both FINs */
123 #define PFTM_TCP_CLOSED_VAL 90 /* Got a RST */
124 #define PFTM_UDP_FIRST_PACKET_VAL 60 /* First UDP packet */
125 #define PFTM_UDP_SINGLE_VAL 30 /* Unidirectional */
126 #define PFTM_UDP_MULTIPLE_VAL 60 /* Bidirectional */
127 #define PFTM_ICMP_FIRST_PACKET_VAL 20 /* First ICMP packet */
128 #define PFTM_ICMP_ERROR_REPLY_VAL 10 /* Got error response */
129 #define PFTM_OTHER_FIRST_PACKET_VAL 60 /* First packet */
130 #define PFTM_OTHER_SINGLE_VAL 30 /* Unidirectional */
131 #define PFTM_OTHER_MULTIPLE_VAL 60 /* Bidirectional */
132 #define PFTM_FRAG_VAL 30 /* Fragment expire */
133 #define PFTM_INTERVAL_VAL 10 /* Expire interval */
134 #define PFTM_SRC_NODE_VAL 0 /* Source tracking */
135 #define PFTM_TS_DIFF_VAL 30 /* Allowed TS diff */
137 enum { PF_NOPFROUTE, PF_FASTROUTE, PF_ROUTETO, PF_DUPTO, PF_REPLYTO };
138 enum { PF_LIMIT_STATES, PF_LIMIT_SRC_NODES, PF_LIMIT_FRAGS,
139 PF_LIMIT_TABLES, PF_LIMIT_TABLE_ENTRIES, PF_LIMIT_MAX };
140 #define PF_POOL_IDMASK 0x0f
141 enum { PF_POOL_NONE, PF_POOL_BITMASK, PF_POOL_RANDOM,
142 PF_POOL_SRCHASH, PF_POOL_ROUNDROBIN };
143 enum { PF_ADDR_ADDRMASK, PF_ADDR_NOROUTE, PF_ADDR_DYNIFTL,
144 PF_ADDR_TABLE, PF_ADDR_RTLABEL, PF_ADDR_URPFFAILED,
146 #define PF_POOL_TYPEMASK 0x0f
147 #define PF_POOL_STICKYADDR 0x20
148 #define PF_WSCALE_FLAG 0x80
149 #define PF_WSCALE_MASK 0x0f
152 #define PF_LOG_ALL 0x02
153 #define PF_LOG_SOCKET_LOOKUP 0x04
155 #define PR_WAITOK 0x0001 /* M_WAITOK */
156 #define PR_NOWAIT 0x0002 /* M_NOWAIT */
157 #define PR_LIMITFAIL 0x0004 /* M_CANFAIL */
158 #define PR_ZERO 0x0008 /* M_ZERO */
168 } pfa; /* 128-bit address */
171 #define addr8 pfa.addr8
172 #define addr16 pfa.addr16
173 #define addr32 pfa.addr32
176 #define PF_TABLE_NAME_SIZE 32
178 #define PFI_AFLAG_NETWORK 0x01
179 #define PFI_AFLAG_BROADCAST 0x02
180 #define PFI_AFLAG_PEER 0x04
181 #define PFI_AFLAG_MODEMASK 0x07
182 #define PFI_AFLAG_NOALIAS 0x08
184 struct pf_addr_wrap {
190 char ifname[IFNAMSIZ];
191 char tblname[PF_TABLE_NAME_SIZE];
192 char rtlabelname[RTLABEL_LEN];
196 struct pfi_dynaddr *dyn;
197 struct pfr_ktable *tbl;
201 u_int8_t type; /* PF_ADDR_* */
202 u_int8_t iflags; /* PFI_AFLAG_* */
208 TAILQ_ENTRY(pfi_dynaddr) entry;
209 struct pf_addr pfid_addr4;
210 struct pf_addr pfid_mask4;
211 struct pf_addr pfid_addr6;
212 struct pf_addr pfid_mask6;
213 struct pfr_ktable *pfid_kt;
214 struct pfi_kif *pfid_kif;
215 void *pfid_hook_cookie;
216 int pfid_net; /* mask or 128 */
217 int pfid_acnt4; /* address count IPv4 */
218 int pfid_acnt6; /* address count IPv6 */
219 sa_family_t pfid_af; /* rule af */
220 u_int8_t pfid_iflags; /* PFI_AFLAG_* */
224 * Address manipulation macros
227 #define NTOHS(x) (x) = ntohs((__uint16_t)(x))
228 #define HTONS(x) (x) = htons((__uint16_t)(x))
233 #define PFLOG_MODVER 44
234 #define PFSYNC_MODVER 44
236 #define PFLOG_MINVER 44
237 #define PFLOG_PREFVER PFLOG_MODVER
238 #define PFLOG_MAXVER 44
239 #define PFSYNC_MINVER 44
240 #define PFSYNC_PREFVER PFSYNC_MODVER
241 #define PFSYNC_MAXVER 44
243 /* prototyped for pf_subr.c */
245 TAILQ_ENTRY(hook_desc) hd_list;
246 void (*hd_fn)(void *);
249 TAILQ_HEAD(hook_desc_head, hook_desc);
251 void *hook_establish(struct hook_desc_head *, int, void (*)(void *), void *);
252 void hook_disestablish(struct hook_desc_head *, void *);
253 void dohooks(struct hook_desc_head *, int);
255 #define HOOK_REMOVE 0x01
256 #define HOOK_FREE 0x02
266 #define PF_INET6_ONLY
272 #define PF_INET_INET6
278 #define PF_INET_INET6
282 /* Both IPv4 and IPv6 */
285 #define PF_AEQ(a, b, c) \
286 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \
287 ((a)->addr32[3] == (b)->addr32[3] && \
288 (a)->addr32[2] == (b)->addr32[2] && \
289 (a)->addr32[1] == (b)->addr32[1] && \
290 (a)->addr32[0] == (b)->addr32[0])) \
292 #define PF_ANEQ(a, b, c) \
293 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \
294 ((a)->addr32[3] != (b)->addr32[3] || \
295 (a)->addr32[2] != (b)->addr32[2] || \
296 (a)->addr32[1] != (b)->addr32[1] || \
297 (a)->addr32[0] != (b)->addr32[0])) \
299 #define PF_AZERO(a, c) \
300 ((c == AF_INET && !(a)->addr32[0]) || \
301 (!(a)->addr32[0] && !(a)->addr32[1] && \
302 !(a)->addr32[2] && !(a)->addr32[3] )) \
304 #define PF_MATCHA(n, a, m, b, f) \
305 pf_match_addr(n, a, m, b, f)
307 #define PF_ACPY(a, b, f) \
310 #define PF_AINC(a, f) \
313 #define PF_POOLMASK(a, b, c, d, f) \
314 pf_poolmask(a, b, c, d, f)
322 #define PF_AEQ(a, b, c) \
323 ((a)->addr32[3] == (b)->addr32[3] && \
324 (a)->addr32[2] == (b)->addr32[2] && \
325 (a)->addr32[1] == (b)->addr32[1] && \
326 (a)->addr32[0] == (b)->addr32[0]) \
328 #define PF_ANEQ(a, b, c) \
329 ((a)->addr32[3] != (b)->addr32[3] || \
330 (a)->addr32[2] != (b)->addr32[2] || \
331 (a)->addr32[1] != (b)->addr32[1] || \
332 (a)->addr32[0] != (b)->addr32[0]) \
334 #define PF_AZERO(a, c) \
335 (!(a)->addr32[0] && \
340 #define PF_MATCHA(n, a, m, b, f) \
341 pf_match_addr(n, a, m, b, f)
343 #define PF_ACPY(a, b, f) \
346 #define PF_AINC(a, f) \
349 #define PF_POOLMASK(a, b, c, d, f) \
350 pf_poolmask(a, b, c, d, f)
357 #define PF_AEQ(a, b, c) \
358 ((a)->addr32[0] == (b)->addr32[0])
360 #define PF_ANEQ(a, b, c) \
361 ((a)->addr32[0] != (b)->addr32[0])
363 #define PF_AZERO(a, c) \
366 #define PF_MATCHA(n, a, m, b, f) \
367 pf_match_addr(n, a, m, b, f)
369 #define PF_ACPY(a, b, f) \
370 (a)->v4.s_addr = (b)->v4.s_addr
372 #define PF_AINC(a, f) \
374 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \
377 #define PF_POOLMASK(a, b, c, d, f) \
379 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \
380 (((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \
383 #endif /* PF_INET_ONLY */
384 #endif /* PF_INET6_ONLY */
385 #endif /* PF_INET_INET6 */
387 #define PF_MISMATCHAW(aw, x, af, neg, ifp) \
389 (((aw)->type == PF_ADDR_NOROUTE && \
390 pf_routable((x), (af), NULL)) || \
391 (((aw)->type == PF_ADDR_URPFFAILED && (ifp) != NULL && \
392 pf_routable((x), (af), (ifp))) || \
393 ((aw)->type == PF_ADDR_RTLABEL && \
394 !pf_rtlabel_match((x), (af), (aw))) || \
395 ((aw)->type == PF_ADDR_TABLE && \
396 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \
397 ((aw)->type == PF_ADDR_DYNIFTL && \
398 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \
399 ((aw)->type == PF_ADDR_RANGE && \
400 !pf_match_addr_range(&(aw)->v.a.addr, \
401 &(aw)->v.a.mask, (x), (af))) || \
402 ((aw)->type == PF_ADDR_ADDRMASK && \
403 !PF_AZERO(&(aw)->v.a.mask, (af)) && \
404 !PF_MATCHA(0, &(aw)->v.a.addr, \
405 &(aw)->v.a.mask, (x), (af))))) != \
419 struct pf_rule_addr {
420 struct pf_addr_wrap addr;
427 struct pf_addr_wrap addr;
428 TAILQ_ENTRY(pf_pooladdr) entries;
429 char ifname[IFNAMSIZ];
433 TAILQ_HEAD(pf_palist, pf_pooladdr);
435 struct pf_poolhashkey {
440 } pfk; /* 128-bit hash key */
441 #define key8 pfk.key8
442 #define key16 pfk.key16
443 #define key32 pfk.key32
447 struct pf_palist list;
448 struct pf_pooladdr *cur;
449 struct pf_poolhashkey key;
450 struct pf_addr counter;
452 u_int16_t proxy_port[2];
458 /* A packed Operating System description for fingerprinting */
459 typedef u_int32_t pf_osfp_t;
460 #define PF_OSFP_ANY ((pf_osfp_t)0)
461 #define PF_OSFP_UNKNOWN ((pf_osfp_t)-1)
462 #define PF_OSFP_NOMATCH ((pf_osfp_t)-2)
464 struct pf_osfp_entry {
465 SLIST_ENTRY(pf_osfp_entry) fp_entry;
468 #define PF_OSFP_EXPANDED 0x001 /* expanded entry */
469 #define PF_OSFP_GENERIC 0x002 /* generic signature */
470 #define PF_OSFP_NODETAIL 0x004 /* no p0f details */
471 #define PF_OSFP_LEN 32
472 char fp_class_nm[PF_OSFP_LEN];
473 char fp_version_nm[PF_OSFP_LEN];
474 char fp_subtype_nm[PF_OSFP_LEN];
476 #define PF_OSFP_ENTRY_EQ(a, b) \
477 ((a)->fp_os == (b)->fp_os && \
478 memcmp((a)->fp_class_nm, (b)->fp_class_nm, PF_OSFP_LEN) == 0 && \
479 memcmp((a)->fp_version_nm, (b)->fp_version_nm, PF_OSFP_LEN) == 0 && \
480 memcmp((a)->fp_subtype_nm, (b)->fp_subtype_nm, PF_OSFP_LEN) == 0)
482 /* handle pf_osfp_t packing */
483 #define _FP_RESERVED_BIT 1 /* For the special negative #defines */
484 #define _FP_UNUSED_BITS 1
485 #define _FP_CLASS_BITS 10 /* OS Class (Windows, Linux) */
486 #define _FP_VERSION_BITS 10 /* OS version (95, 98, NT, 2.4.54, 3.2) */
487 #define _FP_SUBTYPE_BITS 10 /* patch level (NT SP4, SP3, ECN patch) */
488 #define PF_OSFP_UNPACK(osfp, class, version, subtype) do { \
489 (class) = ((osfp) >> (_FP_VERSION_BITS+_FP_SUBTYPE_BITS)) & \
490 ((1 << _FP_CLASS_BITS) - 1); \
491 (version) = ((osfp) >> _FP_SUBTYPE_BITS) & \
492 ((1 << _FP_VERSION_BITS) - 1);\
493 (subtype) = (osfp) & ((1 << _FP_SUBTYPE_BITS) - 1); \
495 #define PF_OSFP_PACK(osfp, class, version, subtype) do { \
496 (osfp) = ((class) & ((1 << _FP_CLASS_BITS) - 1)) << (_FP_VERSION_BITS \
497 + _FP_SUBTYPE_BITS); \
498 (osfp) |= ((version) & ((1 << _FP_VERSION_BITS) - 1)) << \
500 (osfp) |= (subtype) & ((1 << _FP_SUBTYPE_BITS) - 1); \
503 /* the fingerprint of an OSes TCP SYN packet */
504 typedef u_int64_t pf_tcpopts_t;
505 struct pf_os_fingerprint {
506 SLIST_HEAD(pf_osfp_enlist, pf_osfp_entry) fp_oses; /* list of matches */
507 pf_tcpopts_t fp_tcpopts; /* packed TCP options */
508 u_int16_t fp_wsize; /* TCP window size */
509 u_int16_t fp_psize; /* ip->ip_len */
510 u_int16_t fp_mss; /* TCP MSS */
512 #define PF_OSFP_WSIZE_MOD 0x0001 /* Window modulus */
513 #define PF_OSFP_WSIZE_DC 0x0002 /* Window don't care */
514 #define PF_OSFP_WSIZE_MSS 0x0004 /* Window multiple of MSS */
515 #define PF_OSFP_WSIZE_MTU 0x0008 /* Window multiple of MTU */
516 #define PF_OSFP_PSIZE_MOD 0x0010 /* packet size modulus */
517 #define PF_OSFP_PSIZE_DC 0x0020 /* packet size don't care */
518 #define PF_OSFP_WSCALE 0x0040 /* TCP window scaling */
519 #define PF_OSFP_WSCALE_MOD 0x0080 /* TCP window scale modulus */
520 #define PF_OSFP_WSCALE_DC 0x0100 /* TCP window scale dont-care */
521 #define PF_OSFP_MSS 0x0200 /* TCP MSS */
522 #define PF_OSFP_MSS_MOD 0x0400 /* TCP MSS modulus */
523 #define PF_OSFP_MSS_DC 0x0800 /* TCP MSS dont-care */
524 #define PF_OSFP_DF 0x1000 /* IPv4 don't fragment bit */
525 #define PF_OSFP_TS0 0x2000 /* Zero timestamp */
526 #define PF_OSFP_INET6 0x4000 /* IPv6 */
527 u_int8_t fp_optcnt; /* TCP option count */
528 u_int8_t fp_wscale; /* TCP window scaling */
529 u_int8_t fp_ttl; /* IPv4 TTL */
530 #define PF_OSFP_MAXTTL_OFFSET 40
531 /* TCP options packing */
532 #define PF_OSFP_TCPOPT_NOP 0x0 /* TCP NOP option */
533 #define PF_OSFP_TCPOPT_WSCALE 0x1 /* TCP window scaling option */
534 #define PF_OSFP_TCPOPT_MSS 0x2 /* TCP max segment size opt */
535 #define PF_OSFP_TCPOPT_SACK 0x3 /* TCP SACK OK option */
536 #define PF_OSFP_TCPOPT_TS 0x4 /* TCP timestamp option */
537 #define PF_OSFP_TCPOPT_BITS 3 /* bits used by each option */
538 #define PF_OSFP_MAX_OPTS \
539 (sizeof(((struct pf_os_fingerprint *)0)->fp_tcpopts) * 8) \
540 / PF_OSFP_TCPOPT_BITS
542 SLIST_ENTRY(pf_os_fingerprint) fp_next;
545 struct pf_osfp_ioctl {
546 struct pf_osfp_entry fp_os;
547 pf_tcpopts_t fp_tcpopts; /* packed TCP options */
548 u_int16_t fp_wsize; /* TCP window size */
549 u_int16_t fp_psize; /* ip->ip_len */
550 u_int16_t fp_mss; /* TCP MSS */
552 u_int8_t fp_optcnt; /* TCP option count */
553 u_int8_t fp_wscale; /* TCP window scaling */
554 u_int8_t fp_ttl; /* IPv4 TTL */
556 int fp_getnum; /* DIOCOSFPGET number */
565 #define PF_ANCHOR_NAME_SIZE 64
568 struct pf_rule_addr src;
569 struct pf_rule_addr dst;
570 #define PF_SKIP_IFP 0
571 #define PF_SKIP_DIR 1
573 #define PF_SKIP_PROTO 3
574 #define PF_SKIP_SRC_ADDR 4
575 #define PF_SKIP_SRC_PORT 5
576 #define PF_SKIP_DST_ADDR 6
577 #define PF_SKIP_DST_PORT 7
578 #define PF_SKIP_COUNT 8
579 union pf_rule_ptr skip[PF_SKIP_COUNT];
580 #define PF_RULE_LABEL_SIZE 64
581 char label[PF_RULE_LABEL_SIZE];
582 #define PF_QNAME_SIZE 64
583 char ifname[IFNAMSIZ];
584 char qname[PF_QNAME_SIZE];
585 char pqname[PF_QNAME_SIZE];
586 #define PF_TAG_NAME_SIZE 64
587 char tagname[PF_TAG_NAME_SIZE];
588 char match_tagname[PF_TAG_NAME_SIZE];
590 char overload_tblname[PF_TABLE_NAME_SIZE];
592 TAILQ_ENTRY(pf_rule) entries;
593 struct pf_pool rpool;
595 u_int64_t evaluations;
596 u_int64_t packets[2];
600 struct pf_anchor *anchor;
601 struct pfr_ktable *overload_tbl;
603 pf_osfp_t os_fingerprint;
606 u_int32_t timeout[PFTM_MAX];
607 u_int32_t states_cur;
608 u_int32_t states_tot;
609 u_int32_t max_states;
611 u_int32_t max_src_nodes;
612 u_int32_t max_src_states;
613 u_int32_t max_src_conn;
626 u_int16_t return_icmp;
627 u_int16_t return_icmp6;
632 struct pf_rule_uid uid;
633 struct pf_rule_gid gid;
642 u_int8_t match_tag_not;
645 #define PF_STATE_NORMAL 0x1
646 #define PF_STATE_MODULATE 0x2
647 #define PF_STATE_SYNPROXY 0x3
661 u_int8_t anchor_relative;
662 u_int8_t anchor_wildcard;
664 #define PF_FLUSH 0x01
665 #define PF_FLUSH_GLOBAL 0x02
673 #define PF_PICKUPS_UNSPECIFIED 0
674 #define PF_PICKUPS_DISABLED 1
675 #define PF_PICKUPS_HASHONLY 2
676 #define PF_PICKUPS_ENABLED 3
677 u_int8_t pickup_mode;
678 u_int8_t unused01; /* available for use */
682 #define PFRULE_DROP 0x0000
683 #define PFRULE_RETURNRST 0x0001
684 #define PFRULE_FRAGMENT 0x0002
685 #define PFRULE_RETURNICMP 0x0004
686 #define PFRULE_RETURN 0x0008
687 #define PFRULE_NOSYNC 0x0010
688 #define PFRULE_SRCTRACK 0x0020 /* track source states */
689 #define PFRULE_RULESRCTRACK 0x0040 /* per rule */
692 #define PFRULE_NODF 0x0100
693 #define PFRULE_FRAGCROP 0x0200 /* non-buffering frag cache */
694 #define PFRULE_FRAGDROP 0x0400 /* drop funny fragments */
695 #define PFRULE_RANDOMID 0x0800
696 #define PFRULE_REASSEMBLE_TCP 0x1000
697 #define PFRULE_SET_TOS 0x2000
699 /* rule flags again */
700 #define PFRULE_IFBOUND 0x00010000 /* if-bound */
701 #define PFRULE_STATESLOPPY 0x00020000 /* sloppy state tracking */
703 #define PFSTATE_HIWAT 10000 /* default state table size */
704 #define PFSTATE_ADAPT_START 6000 /* default adaptive timeout start */
705 #define PFSTATE_ADAPT_END 12000 /* default adaptive timeout end */
708 struct pf_threshold {
710 #define PF_THRESHOLD_MULT 1000
711 #define PF_THRESHOLD_MAX 0xffffffff / PF_THRESHOLD_MULT
718 RB_ENTRY(pf_src_node) entry;
720 struct pf_addr raddr;
721 union pf_rule_ptr rule;
724 u_int64_t packets[2];
727 struct pf_threshold conn_rate;
734 #define PFSNODE_HIWAT 10000 /* default source node table size */
736 struct pf_state_scrub {
737 struct timeval pfss_last; /* time received last packet */
738 u_int32_t pfss_tsecr; /* last echoed timestamp */
739 u_int32_t pfss_tsval; /* largest timestamp */
740 u_int32_t pfss_tsval0; /* original timestamp */
741 u_int16_t pfss_flags;
742 #define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */
743 #define PFSS_PAWS 0x0010 /* stricter PAWS checks */
744 #define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */
745 #define PFSS_DATA_TS 0x0040 /* timestamp on data packets */
746 #define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */
747 u_int8_t pfss_ttl; /* stashed TTL */
749 u_int32_t pfss_ts_mod; /* timestamp modulation */
752 struct pf_state_host {
758 struct pf_state_peer {
759 struct pf_state_scrub *scrub; /* state is scrubbed */
760 u_int32_t seqlo; /* Max sequence number sent */
761 u_int32_t seqhi; /* Max the other end ACKd + win */
762 u_int32_t seqdiff; /* Sequence number modulator */
763 u_int16_t max_win; /* largest window (pre scaling) */
764 u_int16_t mss; /* Maximum segment size option */
765 u_int8_t state; /* active state level */
766 u_int8_t wscale; /* window scaling factor */
767 u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */
771 TAILQ_HEAD(pf_state_queue, pf_state);
773 /* keep synced with struct pf_state_key, used in RB_FIND */
774 struct pf_state_key_cmp {
775 struct pf_addr addr[2];
782 struct pf_state_item {
783 TAILQ_ENTRY(pf_state_item) entry;
787 TAILQ_HEAD(pf_statelisthead, pf_state_item);
789 struct pf_state_key {
790 struct pf_addr addr[2];
796 RB_ENTRY(pf_state_key) entry;
797 struct pf_statelisthead states;
798 struct pf_state_key *reverse;
802 /* keep synced with struct pf_state, used in RB_FIND */
803 struct pf_state_cmp {
816 TAILQ_ENTRY(pf_state) entry_list;
817 RB_ENTRY(pf_state) entry_id;
818 struct pf_state_peer src;
819 struct pf_state_peer dst;
820 union pf_rule_ptr rule;
821 union pf_rule_ptr anchor;
822 union pf_rule_ptr nat_rule;
823 struct pf_addr rt_addr;
824 struct pf_state_key *key[2]; /* addresses stack and wire */
826 struct pfi_kif *rt_kif;
827 struct pf_src_node *src_node;
828 struct pf_src_node *nat_src_node;
829 u_int64_t packets[2];
834 u_int32_t pfsync_time;
837 u_int8_t state_flags;
838 #define PFSTATE_ALLOWOPTS 0x01
839 #define PFSTATE_SLOPPY 0x02
842 u_int8_t pickup_mode;
843 #define PFSTATE_NOSYNC 0x01
844 #define PFSTATE_FROMSYNC 0x02
845 #define PFSTATE_STALE 0x04
849 * Unified state structures for pulling states out of the kernel
850 * used by pfsync(4) and the pf(4) ioctl.
852 struct pfsync_state_scrub {
853 u_int16_t pfss_flags;
854 u_int8_t pfss_ttl; /* stashed TTL */
855 #define PFSYNC_SCRUB_FLAG_VALID 0x01
857 u_int32_t pfss_ts_mod; /* timestamp modulation */
860 struct pfsync_state_peer {
861 struct pfsync_state_scrub scrub; /* state is scrubbed */
862 u_int32_t seqlo; /* Max sequence number sent */
863 u_int32_t seqhi; /* Max the other end ACKd + win */
864 u_int32_t seqdiff; /* Sequence number modulator */
865 u_int16_t max_win; /* largest window (pre scaling) */
866 u_int16_t mss; /* Maximum segment size option */
867 u_int8_t state; /* active state level */
868 u_int8_t wscale; /* window scaling factor */
872 struct pfsync_state_key {
873 struct pf_addr addr[2];
877 struct pfsync_state {
879 char ifname[IFNAMSIZ];
880 struct pfsync_state_key key[2];
881 struct pfsync_state_peer src;
882 struct pfsync_state_peer dst;
883 struct pf_addr rt_addr;
889 u_int32_t packets[2][2];
890 u_int32_t bytes[2][2];
896 u_int8_t state_flags;
902 #define PFSYNC_FLAG_COMPRESS 0x01
903 #define PFSYNC_FLAG_STALE 0x02
904 #define PFSYNC_FLAG_SRCNODE 0x04
905 #define PFSYNC_FLAG_NATSRCNODE 0x08
906 #define PFSTATE_GOT_SYN_MASK (PFSTATE_GOT_SYN1|PFSTATE_GOT_SYN2)
907 #define PFSTATE_GOT_SYN1 0x04 /* got SYN in one direction */
908 #define PFSTATE_GOT_SYN2 0x08 /* got SYN in the other direction */
910 /* for copies to/from network byte order */
911 /* ioctl interface also uses network byte order */
912 #define pf_state_peer_hton(s,d) do { \
913 (d)->seqlo = htonl((s)->seqlo); \
914 (d)->seqhi = htonl((s)->seqhi); \
915 (d)->seqdiff = htonl((s)->seqdiff); \
916 (d)->max_win = htons((s)->max_win); \
917 (d)->mss = htons((s)->mss); \
918 (d)->state = (s)->state; \
919 (d)->wscale = (s)->wscale; \
921 (d)->scrub.pfss_flags = \
922 htons((s)->scrub->pfss_flags & PFSS_TIMESTAMP); \
923 (d)->scrub.pfss_ttl = (s)->scrub->pfss_ttl; \
924 (d)->scrub.pfss_ts_mod = htonl((s)->scrub->pfss_ts_mod);\
925 (d)->scrub.scrub_flag = PFSYNC_SCRUB_FLAG_VALID; \
929 #define pf_state_peer_ntoh(s,d) do { \
930 (d)->seqlo = ntohl((s)->seqlo); \
931 (d)->seqhi = ntohl((s)->seqhi); \
932 (d)->seqdiff = ntohl((s)->seqdiff); \
933 (d)->max_win = ntohs((s)->max_win); \
934 (d)->mss = ntohs((s)->mss); \
935 (d)->state = (s)->state; \
936 (d)->wscale = (s)->wscale; \
937 if ((s)->scrub.scrub_flag == PFSYNC_SCRUB_FLAG_VALID && \
938 (d)->scrub != NULL) { \
939 (d)->scrub->pfss_flags = \
940 ntohs((s)->scrub.pfss_flags) & PFSS_TIMESTAMP; \
941 (d)->scrub->pfss_ttl = (s)->scrub.pfss_ttl; \
942 (d)->scrub->pfss_ts_mod = ntohl((s)->scrub.pfss_ts_mod);\
946 #define pf_state_counter_hton(s,d) do { \
947 d[0] = htonl((s>>32)&0xffffffff); \
948 d[1] = htonl(s&0xffffffff); \
951 #define pf_state_counter_from_pfsync(s) \
952 (((u_int64_t)(s[0])<<32) | (u_int64_t)(s[1]))
954 #define pf_state_counter_ntoh(s,d) do { \
960 TAILQ_HEAD(pf_rulequeue, pf_rule);
966 struct pf_rulequeue queues[2];
968 struct pf_rulequeue *ptr;
969 struct pf_rule **ptr_array;
974 } rules[PF_RULESET_MAX];
975 struct pf_anchor *anchor;
981 RB_HEAD(pf_anchor_global, pf_anchor);
982 RB_HEAD(pf_anchor_node, pf_anchor);
984 RB_ENTRY(pf_anchor) entry_global;
985 RB_ENTRY(pf_anchor) entry_node;
986 struct pf_anchor *parent;
987 struct pf_anchor_node children;
988 char name[PF_ANCHOR_NAME_SIZE];
989 char path[MAXPATHLEN];
990 struct pf_ruleset ruleset;
991 int refcnt; /* anchor rules */
994 RB_PROTOTYPE(pf_anchor_global, pf_anchor, entry_global, pf_anchor_compare);
995 RB_PROTOTYPE(pf_anchor_node, pf_anchor, entry_node, pf_anchor_compare);
997 #define PF_RESERVED_ANCHOR "_pf"
999 #define PFR_TFLAG_PERSIST 0x00000001
1000 #define PFR_TFLAG_CONST 0x00000002
1001 #define PFR_TFLAG_ACTIVE 0x00000004
1002 #define PFR_TFLAG_INACTIVE 0x00000008
1003 #define PFR_TFLAG_REFERENCED 0x00000010
1004 #define PFR_TFLAG_REFDANCHOR 0x00000020
1005 #define PFR_TFLAG_COUNTERS 0x00000040
1006 /* Adjust masks below when adding flags. */
1007 #define PFR_TFLAG_USRMASK 0x00000043
1008 #define PFR_TFLAG_SETMASK 0x0000003C
1009 #define PFR_TFLAG_ALLMASK 0x0000007F
1012 char pfrt_anchor[MAXPATHLEN];
1013 char pfrt_name[PF_TABLE_NAME_SIZE];
1014 u_int32_t pfrt_flags;
1015 u_int8_t pfrt_fback;
1018 enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED,
1019 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE,
1020 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_NOCOUNT, PFR_FB_MAX };
1024 struct in_addr _pfra_ip4addr;
1025 struct in6_addr _pfra_ip6addr;
1030 u_int8_t pfra_fback;
1032 #define pfra_ip4addr pfra_u._pfra_ip4addr
1033 #define pfra_ip6addr pfra_u._pfra_ip6addr
1035 enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX };
1036 enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX };
1037 #define PFR_OP_XPASS PFR_OP_ADDR_MAX
1040 struct pfr_addr pfras_a;
1041 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
1042 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
1046 enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX };
1049 struct pfr_table pfrts_t;
1050 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
1051 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
1052 u_int64_t pfrts_match;
1053 u_int64_t pfrts_nomatch;
1056 int pfrts_refcnt[PFR_REFCNT_MAX];
1058 #define pfrts_name pfrts_t.pfrt_name
1059 #define pfrts_flags pfrts_t.pfrt_flags
1061 struct pfr_kcounters {
1062 u_int64_t pfrkc_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
1063 u_int64_t pfrkc_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
1066 SLIST_HEAD(pfr_kentryworkq, pfr_kentry);
1068 struct radix_node pfrke_node[2];
1069 union sockaddr_union pfrke_sa;
1070 SLIST_ENTRY(pfr_kentry) pfrke_workq;
1073 struct pfr_kcounters *pfrke_counters;
1075 struct pfr_kroute *pfrke_route;
1082 u_int8_t pfrke_mark;
1083 u_int8_t pfrke_intrpool;
1085 #define pfrke_counters u.pfrke_counters
1086 #define pfrke_route u.pfrke_route
1089 SLIST_HEAD(pfr_ktableworkq, pfr_ktable);
1090 RB_HEAD(pfr_ktablehead, pfr_ktable);
1092 struct pfr_tstats pfrkt_ts;
1093 RB_ENTRY(pfr_ktable) pfrkt_tree;
1094 SLIST_ENTRY(pfr_ktable) pfrkt_workq;
1095 struct radix_node_head *pfrkt_ip4;
1096 struct radix_node_head *pfrkt_ip6;
1097 struct pfr_ktable *pfrkt_shadow;
1098 struct pfr_ktable *pfrkt_root;
1099 struct pf_ruleset *pfrkt_rs;
1103 #define pfrkt_t pfrkt_ts.pfrts_t
1104 #define pfrkt_name pfrkt_t.pfrt_name
1105 #define pfrkt_anchor pfrkt_t.pfrt_anchor
1106 #define pfrkt_ruleset pfrkt_t.pfrt_ruleset
1107 #define pfrkt_flags pfrkt_t.pfrt_flags
1108 #define pfrkt_cnt pfrkt_ts.pfrts_cnt
1109 #define pfrkt_refcnt pfrkt_ts.pfrts_refcnt
1110 #define pfrkt_packets pfrkt_ts.pfrts_packets
1111 #define pfrkt_bytes pfrkt_ts.pfrts_bytes
1112 #define pfrkt_match pfrkt_ts.pfrts_match
1113 #define pfrkt_nomatch pfrkt_ts.pfrts_nomatch
1114 #define pfrkt_tzero pfrkt_ts.pfrts_tzero
1116 RB_HEAD(pf_state_tree, pf_state_key);
1117 RB_PROTOTYPE(pf_state_tree, pf_state_key, entry, pf_state_compare_key);
1119 RB_HEAD(pf_state_tree_ext_gwy, pf_state_key);
1120 RB_PROTOTYPE(pf_state_tree_ext_gwy, pf_state_key,
1121 entry_ext_gwy, pf_state_compare_ext_gwy);
1124 char pfif_name[IFNAMSIZ];
1125 u_int64_t pfif_packets[2][2][2];
1126 u_int64_t pfif_bytes[2][2][2];
1127 u_int64_t pfif_addcnt;
1128 u_int64_t pfif_delcnt;
1135 TAILQ_HEAD(pfi_grouphead, pfi_kif);
1136 TAILQ_HEAD(pfi_statehead, pfi_kif);
1137 RB_HEAD(pfi_ifhead, pfi_kif);
1140 extern struct pf_state_tree pf_statetbl;
1142 /* keep synced with pfi_kif, used in RB_FIND */
1143 struct pfi_kif_cmp {
1144 char pfik_ifname[IFNAMSIZ];
1148 struct pfi_if pfik_if;
1149 RB_ENTRY(pfi_kif) pfik_tree;
1150 u_int64_t pfik_packets[2][2][2];
1151 u_int64_t pfik_bytes[2][2][2];
1152 u_int32_t pfik_tzero;
1154 struct hook_desc_head *pfik_ah_head;
1155 void *pfik_ah_cookie;
1156 struct pfi_kif *pfik_parent;
1157 struct ifnet *pfik_ifp;
1158 struct ifg_group *pfik_group;
1161 TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs;
1163 #define pfik_name pfik_if.pfif_name
1164 #define pfik_packets pfik_if.pfif_packets
1165 #define pfik_bytes pfik_if.pfif_bytes
1166 #define pfik_tzero pfik_if.pfif_tzero
1167 #define pfik_flags pfik_if.pfif_flags
1168 #define pfik_addcnt pfik_if.pfif_addcnt
1169 #define pfik_delcnt pfik_if.pfif_delcnt
1170 #define pfik_states pfik_if.pfif_states
1171 #define pfik_rules pfik_if.pfif_rules
1179 #define PFI_IFLAG_GROUP 0x0001 /* group of interfaces */
1180 #define PFI_IFLAG_INSTANCE 0x0002 /* single instance */
1181 #define PFI_IFLAG_CLONABLE 0x0010 /* clonable group */
1182 #define PFI_IFLAG_DYNAMIC 0x0020 /* dynamic group */
1183 #define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */
1184 #define PFI_IFLAG_PLACEHOLDER 0x8000 /* placeholder group/interface */
1193 u_int64_t tot_len; /* Make Mickey money */
1199 struct icmp6_hdr *icmp6;
1204 struct pf_rule *nat_rule; /* nat/rdr rule applied to packet */
1207 struct pf_addr *src; /* src address */
1208 struct pf_addr *dst; /* dst address */
1212 u_int32_t p_len; /* total length of payload */
1215 u_int16_t *proto_sum;
1216 u_int16_t flags; /* Let SCRUB trigger behavior in
1217 * state code. Easier than tags */
1218 #define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */
1219 #define PFDESC_IP_REAS 0x0002 /* IP frags would've been reassembled */
1223 u_int8_t dir; /* direction */
1224 u_int8_t sidx; /* key index for source */
1225 u_int8_t didx; /* key index for destination */
1228 /* flags for RDR options */
1229 #define PF_DPORT_RANGE 0x01 /* Dest port uses range */
1230 #define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */
1232 /* Reasons code for passing/dropping a packet */
1233 #define PFRES_MATCH 0 /* Explicit match of a rule */
1234 #define PFRES_BADOFF 1 /* Bad offset for pull_hdr */
1235 #define PFRES_FRAG 2 /* Dropping following fragment */
1236 #define PFRES_SHORT 3 /* Dropping short packet */
1237 #define PFRES_NORM 4 /* Dropping by normalizer */
1238 #define PFRES_MEMORY 5 /* Dropped due to lacking mem */
1239 #define PFRES_TS 6 /* Bad TCP Timestamp (RFC1323) */
1240 #define PFRES_CONGEST 7 /* Congestion (of ipintrq) */
1241 #define PFRES_IPOPTIONS 8 /* IP option */
1242 #define PFRES_PROTCKSUM 9 /* Protocol checksum invalid */
1243 #define PFRES_BADSTATE 10 /* State mismatch */
1244 #define PFRES_STATEINS 11 /* State insertion failure */
1245 #define PFRES_MAXSTATES 12 /* State limit */
1246 #define PFRES_SRCLIMIT 13 /* Source node/conn limit */
1247 #define PFRES_SYNPROXY 14 /* SYN proxy */
1248 #define PFRES_MAX 15 /* total+1 */
1250 #define PFRES_NAMES { \
1269 /* Counters for other things we want to keep track of */
1270 #define LCNT_STATES 0 /* states */
1271 #define LCNT_SRCSTATES 1 /* max-src-states */
1272 #define LCNT_SRCNODES 2 /* max-src-nodes */
1273 #define LCNT_SRCCONN 3 /* max-src-conn */
1274 #define LCNT_SRCCONNRATE 4 /* max-src-conn-rate */
1275 #define LCNT_OVERLOAD_TABLE 5 /* entry added to overload table */
1276 #define LCNT_OVERLOAD_FLUSH 6 /* state entries flushed */
1277 #define LCNT_MAX 7 /* total+1 */
1279 #define LCNT_NAMES { \
1280 "max states per rule", \
1284 "max-src-conn-rate", \
1285 "overload table insertion", \
1286 "overload flush states", \
1290 /* UDP state enumeration */
1291 #define PFUDPS_NO_TRAFFIC 0
1292 #define PFUDPS_SINGLE 1
1293 #define PFUDPS_MULTIPLE 2
1295 #define PFUDPS_NSTATES 3 /* number of state levels */
1297 #define PFUDPS_NAMES { \
1304 /* Other protocol state enumeration */
1305 #define PFOTHERS_NO_TRAFFIC 0
1306 #define PFOTHERS_SINGLE 1
1307 #define PFOTHERS_MULTIPLE 2
1309 #define PFOTHERS_NSTATES 3 /* number of state levels */
1311 #define PFOTHERS_NAMES { \
1318 #define FCNT_STATE_SEARCH 0
1319 #define FCNT_STATE_INSERT 1
1320 #define FCNT_STATE_REMOVALS 2
1323 #define SCNT_SRC_NODE_SEARCH 0
1324 #define SCNT_SRC_NODE_INSERT 1
1325 #define SCNT_SRC_NODE_REMOVALS 2
1328 #define ACTION_SET(a, x) \
1334 #define REASON_SET(a, x) \
1338 if (x < PFRES_MAX) \
1339 pf_status.counters[x]++; \
1343 u_int64_t counters[PFRES_MAX];
1344 u_int64_t lcounters[LCNT_MAX]; /* limit counters */
1345 u_int64_t fcounters[FCNT_MAX];
1346 u_int64_t scounters[SCNT_MAX];
1347 u_int64_t pcounters[2][2][3];
1348 u_int64_t bcounters[2][2];
1352 u_int32_t src_nodes;
1356 char ifname[IFNAMSIZ];
1357 u_int8_t pf_chksum[PF_MD5_DIGEST_LENGTH];
1377 /* real-time service curve */
1378 u_int rtsc_m1; /* slope of the 1st segment in bps */
1379 u_int rtsc_d; /* the x-projection of m1 in msec */
1380 u_int rtsc_m2; /* slope of the 2nd segment in bps */
1381 /* link-sharing service curve */
1385 /* upper-limit service curve */
1393 * XXX this needs some work
1396 u_int nbuckets; /* hash buckets */
1397 u_int hogs_m1; /* hog detection bandwidth */
1400 /* link-sharing service curve */
1407 char ifname[IFNAMSIZ];
1409 void *altq_disc; /* discipline-specific state */
1410 TAILQ_ENTRY(pf_altq) entries;
1412 /* scheduler spec */
1413 u_int8_t scheduler; /* scheduler type */
1414 u_int16_t tbrsize; /* tokenbucket regulator size */
1415 u_int32_t ifbandwidth; /* interface bandwidth */
1418 char qname[PF_QNAME_SIZE]; /* queue name */
1419 char parent[PF_QNAME_SIZE]; /* parent name */
1420 u_int32_t parent_qid; /* parent queue id */
1421 u_int32_t bandwidth; /* queue bandwidth */
1422 u_int8_t priority; /* priority */
1423 u_int16_t qlimit; /* queue size limit */
1424 u_int16_t flags; /* misc flags */
1426 struct cbq_opts cbq_opts;
1427 struct priq_opts priq_opts;
1428 struct hfsc_opts hfsc_opts;
1429 struct fairq_opts fairq_opts;
1432 u_int32_t qid; /* return value */
1436 * DO NOT USE PF_TAG_GENERATED! Set PF_MBUF_TAGGED in fw_flags instead and
1437 * then clear pf.flags. The mbuf allocator does not automatically clear
1438 * the pf fields in the mbuf packet header.
1440 /*#define PF_TAG_GENERATED 0x01*/
1441 #define PF_TAG_FRAGCACHE 0x02
1442 #define PF_TAG_TRANSLATE_LOCALHOST 0x04
1443 #define PF_TAG_STATE_HASHED 0x08
1446 TAILQ_ENTRY(pf_tagname) entries;
1447 char name[PF_TAG_NAME_SIZE];
1454 struct in_addr ipv4;
1455 struct in6_addr ipv6;
1460 #define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */
1461 #define PFFRAG_FRAG_HIWAT 1000 /* Number of fragmented packets */
1462 #define PFFRAG_FRCENT_HIWAT 50000 /* Number of fragment cache entries */
1463 #define PFFRAG_FRCACHE_HIWAT 10000 /* Number of fragment descriptors */
1465 #define PFR_KTABLE_HIWAT 1000 /* Number of tables */
1466 #define PFR_KENTRY_HIWAT 200000 /* Number of table entries */
1467 #define PFR_KENTRY_HIWAT_SMALL 100000 /* Number of table entries (tiny hosts) */
1470 * ioctl parameter structures
1473 struct pfioc_pooladdr {
1481 char anchor[MAXPATHLEN];
1482 struct pf_pooladdr addr;
1488 u_int32_t pool_ticket;
1490 char anchor[MAXPATHLEN];
1491 char anchor_call[MAXPATHLEN];
1492 struct pf_rule rule;
1495 struct pfioc_natlook {
1496 struct pf_addr saddr;
1497 struct pf_addr daddr;
1498 struct pf_addr rsaddr;
1499 struct pf_addr rdaddr;
1509 struct pfioc_state {
1510 struct pfsync_state state;
1513 struct pfioc_src_node_kill {
1514 sa_family_t psnk_af;
1515 struct pf_rule_addr psnk_src;
1516 struct pf_rule_addr psnk_dst;
1520 struct pfioc_state_kill {
1521 struct pf_state_cmp psk_pfcmp;
1524 struct pf_rule_addr psk_src;
1525 struct pf_rule_addr psk_dst;
1526 char psk_ifname[IFNAMSIZ];
1527 char psk_label[PF_RULE_LABEL_SIZE];
1531 struct pfioc_states {
1535 struct pfsync_state *psu_states;
1537 #define ps_buf ps_u.psu_buf
1538 #define ps_states ps_u.psu_states
1541 struct pfioc_src_nodes {
1545 struct pf_src_node *psu_src_nodes;
1547 #define psn_buf psn_u.psu_buf
1548 #define psn_src_nodes psn_u.psu_src_nodes
1552 char ifname[IFNAMSIZ];
1560 struct pfioc_limit {
1569 struct pf_altq altq;
1572 struct pfioc_qstats {
1580 struct pfioc_anchor {
1582 char name[PF_ANCHOR_NAME_SIZE];
1585 struct pfioc_ruleset {
1587 char path[MAXPATHLEN];
1588 char name[PF_ANCHOR_NAME_SIZE];
1591 #define PF_RULESET_ALTQ (PF_RULESET_MAX)
1592 #define PF_RULESET_TABLE (PF_RULESET_MAX+1)
1593 struct pfioc_trans {
1594 int size; /* number of elements */
1595 int esize; /* size of each element in bytes */
1596 struct pfioc_trans_e {
1598 char anchor[MAXPATHLEN];
1603 #define PFR_FLAG_ATOMIC 0x00000001
1604 #define PFR_FLAG_DUMMY 0x00000002
1605 #define PFR_FLAG_FEEDBACK 0x00000004
1606 #define PFR_FLAG_CLSTATS 0x00000008
1607 #define PFR_FLAG_ADDRSTOO 0x00000010
1608 #define PFR_FLAG_REPLACE 0x00000020
1609 #define PFR_FLAG_ALLRSETS 0x00000040
1610 #define PFR_FLAG_ALLMASK 0x0000007F
1612 #define PFR_FLAG_USERIOCTL 0x10000000
1615 struct pfioc_table {
1616 struct pfr_table pfrio_table;
1625 u_int32_t pfrio_ticket;
1627 #define pfrio_exists pfrio_nadd
1628 #define pfrio_nzero pfrio_nadd
1629 #define pfrio_nmatch pfrio_nadd
1630 #define pfrio_naddr pfrio_size2
1631 #define pfrio_setflag pfrio_size2
1632 #define pfrio_clrflag pfrio_nadd
1634 struct pfioc_iface {
1635 char pfiio_name[IFNAMSIZ];
1648 #define DIOCSTART _IO ('D', 1)
1649 #define DIOCSTOP _IO ('D', 2)
1650 #define DIOCBEGINRULES _IOWR('D', 3, struct pfioc_rule)
1651 #define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule)
1652 #define DIOCCOMMITRULES _IOWR('D', 5, struct pfioc_rule)
1653 #define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule)
1654 #define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule)
1655 /* XXX cut 8 - 17 */
1656 #define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill)
1657 #define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state)
1658 #define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if)
1659 #define DIOCGETSTATUS _IOWR('D', 21, struct pf_status)
1660 #define DIOCCLRSTATUS _IO ('D', 22)
1661 #define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook)
1662 #define DIOCSETDEBUG _IOWR('D', 24, u_int32_t)
1663 #define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states)
1664 #define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule)
1665 /* XXX cut 26 - 28 */
1666 #define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm)
1667 #define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm)
1668 #define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state)
1669 #define DIOCCLRRULECTRS _IO ('D', 38)
1670 #define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit)
1671 #define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit)
1672 #define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill)
1673 #define DIOCSTARTALTQ _IO ('D', 42)
1674 #define DIOCSTOPALTQ _IO ('D', 43)
1675 #define DIOCBEGINALTQS _IOWR('D', 44, u_int32_t)
1676 #define DIOCADDALTQ _IOWR('D', 45, struct pfioc_altq)
1677 #define DIOCCOMMITALTQS _IOWR('D', 46, u_int32_t)
1678 #define DIOCGETALTQS _IOWR('D', 47, struct pfioc_altq)
1679 #define DIOCGETALTQ _IOWR('D', 48, struct pfioc_altq)
1680 #define DIOCCHANGEALTQ _IOWR('D', 49, struct pfioc_altq)
1681 #define DIOCGETQSTATS _IOWR('D', 50, struct pfioc_qstats)
1682 #define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr)
1683 #define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr)
1684 #define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr)
1685 #define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr)
1686 #define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr)
1687 /* XXX cut 55 - 57 */
1688 #define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset)
1689 #define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset)
1690 #define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table)
1691 #define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table)
1692 #define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table)
1693 #define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table)
1694 #define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table)
1695 #define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table)
1696 #define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table)
1697 #define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table)
1698 #define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table)
1699 #define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table)
1700 #define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table)
1701 #define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table)
1702 #define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table)
1703 #define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table)
1704 #define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table)
1705 #define DIOCRINABEGIN _IOWR('D', 75, struct pfioc_table)
1706 #define DIOCRINACOMMIT _IOWR('D', 76, struct pfioc_table)
1707 #define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table)
1708 #define DIOCOSFPFLUSH _IO('D', 78)
1709 #define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl)
1710 #define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl)
1711 #define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans)
1712 #define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans)
1713 #define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans)
1714 #define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes)
1715 #define DIOCCLRSRCNODES _IO('D', 85)
1716 #define DIOCSETHOSTID _IOWR('D', 86, u_int32_t)
1717 #define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface)
1718 #define DIOCICLRISTATS _IOWR('D', 88, struct pfioc_iface)
1719 #define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface)
1720 #define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface)
1721 #define DIOCKILLSRCNODES _IOWR('D', 91, struct pfioc_src_node_kill)
1723 char ifname[IFNAMSIZ];
1726 #define DIOCGIFSPEED _IOWR('D', 89, struct pf_ifspeed)
1729 RB_HEAD(pf_src_tree, pf_src_node);
1730 RB_PROTOTYPE(pf_src_tree, pf_src_node, entry, pf_src_compare);
1731 extern struct pf_src_tree tree_src_tracking;
1733 RB_HEAD(pf_state_tree_id, pf_state);
1734 RB_PROTOTYPE(pf_state_tree_id, pf_state,
1735 entry_id, pf_state_compare_id);
1736 extern struct pf_state_tree_id tree_id;
1737 extern struct pf_state_queue state_list;
1739 TAILQ_HEAD(pf_poolqueue, pf_pool);
1740 extern struct pf_poolqueue pf_pools[2];
1741 TAILQ_HEAD(pf_altqqueue, pf_altq);
1742 extern struct pf_altqqueue pf_altqs[2];
1743 extern struct pf_palist pf_pabuf;
1745 extern u_int32_t ticket_altqs_active;
1746 extern u_int32_t ticket_altqs_inactive;
1747 extern int altqs_inactive_open;
1748 extern u_int32_t ticket_pabuf;
1749 extern struct pf_altqqueue *pf_altqs_active;
1750 extern struct pf_altqqueue *pf_altqs_inactive;
1751 extern struct pf_poolqueue *pf_pools_active;
1752 extern struct pf_poolqueue *pf_pools_inactive;
1753 extern int pf_tbladdr_setup(struct pf_ruleset *,
1754 struct pf_addr_wrap *);
1755 extern void pf_tbladdr_remove(struct pf_addr_wrap *);
1756 extern void pf_tbladdr_copyout(struct pf_addr_wrap *);
1757 extern void pf_calc_skip_steps(struct pf_rulequeue *);
1758 extern struct malloc_type *pf_src_tree_pl, *pf_rule_pl;
1759 extern struct malloc_type *pf_state_pl, *pf_state_key_pl, *pf_state_item_pl,
1760 *pf_altq_pl, *pf_pooladdr_pl;
1761 extern struct malloc_type *pfr_ktable_pl, *pfr_kentry_pl;
1762 extern struct malloc_type *pfr_kentry_pl2;
1763 extern struct malloc_type *pf_cache_pl, *pf_cent_pl;
1764 extern struct malloc_type *pf_state_scrub_pl;
1765 extern struct malloc_type *pfi_addr_pl;
1766 extern void pf_purge_thread(void *);
1767 extern int pf_purge_expired_src_nodes(int);
1768 extern int pf_purge_expired_states(u_int32_t, int);
1769 extern void pf_unlink_state(struct pf_state *);
1770 extern void pf_free_state(struct pf_state *);
1771 extern int pf_state_insert(struct pfi_kif *,
1772 struct pf_state_key *,
1773 struct pf_state_key *,
1775 extern int pf_insert_src_node(struct pf_src_node **,
1776 struct pf_rule *, struct pf_addr *,
1778 void pf_src_tree_remove_state(struct pf_state *);
1779 u_int32_t pf_state_hash(struct pf_state_key *sk);
1780 extern struct pf_state *pf_find_state_byid(struct pf_state_cmp *);
1781 extern struct pf_state *pf_find_state_all(struct pf_state_key_cmp *,
1783 extern void pf_print_state(struct pf_state *);
1784 extern void pf_print_flags(u_int8_t);
1785 extern u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t,
1788 extern struct ifnet *sync_ifp;
1789 extern struct pf_rule pf_default_rule;
1790 extern void pf_addrcpy(struct pf_addr *, struct pf_addr *,
1792 void pf_rm_rule(struct pf_rulequeue *,
1794 struct pf_divert *pf_find_divert(struct mbuf *);
1797 int pf_test(int, struct ifnet *, struct mbuf **, struct ether_header *, struct inpcb *);
1801 int pf_test6(int, struct ifnet *, struct mbuf **, struct ether_header *, struct inpcb *);
1802 void pf_poolmask(struct pf_addr *, struct pf_addr*,
1803 struct pf_addr *, struct pf_addr *, u_int8_t);
1804 void pf_addr_inc(struct pf_addr *, sa_family_t);
1807 void *pf_pull_hdr(struct mbuf *, int, void *, int, u_short *, u_short *,
1809 void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t);
1810 int pflog_packet(struct pfi_kif *, struct mbuf *, sa_family_t, u_int8_t,
1811 u_int8_t, struct pf_rule *, struct pf_rule *, struct pf_ruleset *,
1813 int pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *,
1814 struct pf_addr *, sa_family_t);
1815 int pf_match_addr_range(struct pf_addr *, struct pf_addr *,
1816 struct pf_addr *, sa_family_t);
1817 int pf_match(u_int8_t, u_int32_t, u_int32_t, u_int32_t);
1818 int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t);
1819 int pf_match_uid(u_int8_t, uid_t, uid_t, uid_t);
1820 int pf_match_gid(u_int8_t, gid_t, gid_t, gid_t);
1822 void pf_normalize_init(void);
1823 int pf_normalize_ip(struct mbuf **, int, struct pfi_kif *, u_short *,
1825 int pf_normalize_ip6(struct mbuf **, int, struct pfi_kif *, u_short *,
1827 int pf_normalize_tcp(int, struct pfi_kif *, struct mbuf *, int, int, void *,
1829 void pf_normalize_tcp_cleanup(struct pf_state *);
1830 int pf_normalize_tcp_init(struct mbuf *, int, struct pf_pdesc *,
1831 struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *);
1832 int pf_normalize_tcp_stateful(struct mbuf *, int, struct pf_pdesc *,
1833 u_short *, struct tcphdr *, struct pf_state *,
1834 struct pf_state_peer *, struct pf_state_peer *, int *);
1836 pf_state_expires(const struct pf_state *);
1837 void pf_purge_expired_fragments(void);
1838 int pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kif *);
1839 int pf_rtlabel_match(struct pf_addr *, sa_family_t, struct pf_addr_wrap *);
1840 int pf_socket_lookup(int, struct pf_pdesc *);
1841 struct pf_state_key *pf_alloc_state_key(int);
1842 int pf_state_key_attach(struct pf_state_key *, struct pf_state *, int);
1843 void pfr_initialize(void);
1844 int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t);
1845 void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t,
1846 u_int64_t, int, int, int);
1847 int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *,
1848 struct pf_addr **, struct pf_addr **, sa_family_t);
1849 void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *);
1851 pfr_attach_table(struct pf_ruleset *, char *);
1852 void pfr_detach_table(struct pfr_ktable *);
1853 int pfr_clr_tables(struct pfr_table *, int *, int);
1854 int pfr_add_tables(struct pfr_table *, int, int *, int);
1855 int pfr_del_tables(struct pfr_table *, int, int *, int);
1856 int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int);
1857 int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int);
1858 int pfr_clr_tstats(struct pfr_table *, int, int *, int);
1859 int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int);
1860 int pfr_clr_addrs(struct pfr_table *, int *, int);
1861 int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *, long);
1862 int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
1864 int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
1866 int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
1867 int *, int *, int *, int, u_int32_t);
1868 int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int);
1869 int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int);
1870 int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *,
1872 int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
1874 int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int);
1875 int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int);
1876 int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int);
1877 int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *,
1878 int *, u_int32_t, int);
1880 extern struct pfi_kif *pfi_all;
1882 void pfi_initialize(void);
1883 struct pfi_kif *pfi_kif_get(const char *);
1884 void pfi_cleanup(void);
1885 void pfi_attach_clone(struct if_clone *);
1886 void pfi_kif_ref(struct pfi_kif *, enum pfi_kif_refs);
1887 void pfi_kif_unref(struct pfi_kif *, enum pfi_kif_refs);
1888 int pfi_kif_match(struct pfi_kif *, struct pfi_kif *);
1889 void pfi_attach_ifnet(struct ifnet *);
1890 void pfi_detach_ifnet(struct ifnet *);
1891 struct pfi_kif *pfi_lookup_create(const char *);
1892 struct pfi_kif *pfi_lookup_if(const char *);
1893 void pfi_attach_ifgroup(struct ifg_group *);
1894 void pfi_detach_ifgroup(struct ifg_group *);
1895 void pfi_group_change(const char *);
1896 int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *,
1898 int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t);
1899 void pfi_dynaddr_remove(struct pf_addr_wrap *);
1900 void pfi_dynaddr_copyout(struct pf_addr_wrap *);
1901 void pfi_update_status(const char *, struct pf_status *);
1902 int pfi_get_ifaces(const char *, struct pfi_kif *, int *);
1903 int pfi_set_flags(const char *, int);
1904 int pfi_clear_flags(const char *, int);
1906 int pf_match_tag(struct mbuf *, struct pf_rule *, int *);
1907 u_int16_t pf_tagname2tag(char *);
1908 void pf_tag2tagname(u_int16_t, char *);
1909 void pf_tag_ref(u_int16_t);
1910 void pf_tag_unref(u_int16_t);
1911 int pf_tag_packet(struct mbuf *, int, int);
1912 u_int32_t pf_qname2qid(char *);
1913 void pf_qid2qname(u_int32_t, char *);
1914 void pf_qid_unref(u_int32_t);
1916 extern struct pf_status pf_status;
1917 extern struct malloc_type *pf_frent_pl, *pf_frag_pl;
1918 extern struct lock pf_consistency_lock;
1920 struct pf_pool_limit {
1924 extern struct pf_pool_limit pf_pool_limits[PF_LIMIT_MAX];
1927 LIST_ENTRY(pf_frent) fr_next;
1933 LIST_ENTRY(pf_frcache) fr_next;
1938 struct pf_fragment {
1939 RB_ENTRY(pf_fragment) fr_entry;
1940 TAILQ_ENTRY(pf_fragment) frag_next;
1941 struct in_addr fr_src;
1942 struct in_addr fr_dst;
1943 u_int8_t fr_p; /* protocol of this fragment */
1944 u_int8_t fr_flags; /* status flags */
1945 u_int16_t fr_id; /* fragment id for reassemble */
1946 u_int16_t fr_max; /* fragment data max */
1947 u_int32_t fr_timeout;
1948 #define fr_queue fr_u.fru_queue
1949 #define fr_cache fr_u.fru_cache
1951 LIST_HEAD(pf_fragq, pf_frent) fru_queue; /* buffering */
1952 LIST_HEAD(pf_cacheq, pf_frcache) fru_cache; /* non-buf */
1956 #endif /* _KERNEL */
1958 extern struct radix_node_head *pf_maskhead;
1959 extern struct pf_anchor_global pf_anchors;
1960 extern struct pf_anchor pf_main_anchor;
1961 #define pf_main_ruleset pf_main_anchor.ruleset
1963 /* these ruleset functions can be linked into userland programs (pfctl) */
1964 int pf_get_ruleset_number(u_int8_t);
1965 void pf_init_ruleset(struct pf_ruleset *);
1966 int pf_anchor_setup(struct pf_rule *,
1967 const struct pf_ruleset *, const char *);
1968 int pf_anchor_copyout(const struct pf_ruleset *,
1969 const struct pf_rule *, struct pfioc_rule *);
1970 void pf_anchor_remove(struct pf_rule *);
1971 void pf_remove_if_empty_ruleset(struct pf_ruleset *);
1972 struct pf_anchor *pf_find_anchor(const char *);
1973 struct pf_ruleset *pf_find_ruleset(const char *);
1974 struct pf_ruleset *pf_find_or_create_ruleset(const char *);
1975 void pf_rs_initialize(void);
1977 /* The fingerprint functions can be linked into userland programs (tcpdump) */
1978 int pf_osfp_add(struct pf_osfp_ioctl *);
1980 struct pf_osfp_enlist *
1981 pf_osfp_fingerprint(struct pf_pdesc *, struct mbuf *, int,
1982 const struct tcphdr *);
1983 #endif /* _KERNEL */
1984 struct pf_osfp_enlist *
1985 pf_osfp_fingerprint_hdr(const struct ip *, const struct ip6_hdr *,
1986 const struct tcphdr *);
1987 void pf_osfp_flush(void);
1988 int pf_osfp_get(struct pf_osfp_ioctl *);
1989 void pf_osfp_initialize(void);
1990 int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t);
1991 struct pf_os_fingerprint *
1992 pf_osfp_validate(void);
1995 #endif /* _NET_PFVAR_H_ */