2 * Copyright (c) 2010-2014 The DragonFly Project. All rights reserved.
3 * Copyright (c) 2001 Daniel Hartmeier. All rights reserved.
4 * Originally imported from OpenBSD.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
10 * - Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * - Redistributions in binary form must reproduce the above
13 * copyright notice, this list of conditions and the following
14 * disclaimer in the documentation and/or other materials provided
15 * with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
19 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
20 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
21 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
23 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
24 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
27 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
28 * POSSIBILITY OF SUCH DAMAGE.
34 #include <sys/param.h>
35 #include <sys/types.h>
36 #include <sys/limits.h>
37 #include <sys/ioccom.h>
38 #include <sys/queue.h>
42 #include <net/radix.h>
43 #include <net/if_clone.h>
44 #include <netinet/in.h>
45 #include <netinet/in_pcb.h>
50 * If we include <netipsec/keydb.h>, we need _KERNEL definition.
51 * This makes pfctl compilation difficult.
53 union sockaddr_union {
55 struct sockaddr_in sin;
56 struct sockaddr_in6 sin6;
59 #include <netinet/tcp_fsm.h>
65 extern struct lwkt_token pf_token;
66 extern struct lwkt_token pf_gtoken;
68 #define PF_TCPS_PROXY_SRC ((TCP_NSTATES)+0)
69 #define PF_TCPS_PROXY_DST ((TCP_NSTATES)+1)
72 #define RTLABEL_LEN 32
73 #define BPF_DIRECTION_OUT (1<<1)
76 #define ALTQ_IS_ENABLED(ifq) ((ifq)->altq_flags & ALTQF_ENABLED)
79 #define PF_MD5_DIGEST_LENGTH 16
80 #ifdef MD5_DIGEST_LENGTH
81 #if PF_MD5_DIGEST_LENGTH != MD5_DIGEST_LENGTH
86 enum { PF_INOUT, PF_IN, PF_OUT };
87 enum { PF_PASS, PF_DROP, PF_SCRUB, PF_NOSCRUB, PF_NAT, PF_NONAT,
88 PF_BINAT, PF_NOBINAT, PF_RDR, PF_NORDR, PF_SYNPROXY_DROP };
89 enum { PF_RULESET_SCRUB, PF_RULESET_FILTER, PF_RULESET_NAT,
90 PF_RULESET_BINAT, PF_RULESET_RDR, PF_RULESET_MAX };
91 enum { PF_OP_NONE, PF_OP_IRG, PF_OP_EQ, PF_OP_NE, PF_OP_LT,
92 PF_OP_LE, PF_OP_GT, PF_OP_GE, PF_OP_XRG, PF_OP_RRG };
93 enum { PF_DEBUG_NONE, PF_DEBUG_URGENT, PF_DEBUG_MISC, PF_DEBUG_NOISY };
94 enum { PF_CHANGE_NONE, PF_CHANGE_ADD_HEAD, PF_CHANGE_ADD_TAIL,
95 PF_CHANGE_ADD_BEFORE, PF_CHANGE_ADD_AFTER,
96 PF_CHANGE_REMOVE, PF_CHANGE_GET_TICKET };
97 enum { PF_GET_NONE, PF_GET_CLR_CNTR };
98 enum { PF_SK_WIRE, PF_SK_STACK, PF_SK_BOTH };
101 * Note about PFTM_*: real indices into pf_rule.timeout[] come before
102 * PFTM_MAX, special cases afterwards. See pf_state_expires().
104 enum { PFTM_TCP_FIRST_PACKET, PFTM_TCP_OPENING, PFTM_TCP_ESTABLISHED,
105 PFTM_TCP_CLOSING, PFTM_TCP_FIN_WAIT, PFTM_TCP_CLOSED,
106 PFTM_UDP_FIRST_PACKET, PFTM_UDP_SINGLE, PFTM_UDP_MULTIPLE,
107 PFTM_ICMP_FIRST_PACKET, PFTM_ICMP_ERROR_REPLY,
108 PFTM_OTHER_FIRST_PACKET, PFTM_OTHER_SINGLE,
109 PFTM_OTHER_MULTIPLE, PFTM_FRAG, PFTM_INTERVAL,
110 PFTM_ADAPTIVE_START, PFTM_ADAPTIVE_END, PFTM_SRC_NODE,
111 PFTM_TS_DIFF, PFTM_MAX, PFTM_PURGE, PFTM_UNLINKED,
114 /* PFTM default values */
115 #define PFTM_TCP_FIRST_PACKET_VAL 120 /* First TCP packet */
116 #define PFTM_TCP_OPENING_VAL 30 /* No response yet */
117 #define PFTM_TCP_ESTABLISHED_VAL 24*60*60/* Established */
118 #define PFTM_TCP_CLOSING_VAL 15 * 60 /* Half closed */
119 #define PFTM_TCP_FIN_WAIT_VAL 45 /* Got both FINs */
120 #define PFTM_TCP_CLOSED_VAL 90 /* Got a RST */
121 #define PFTM_UDP_FIRST_PACKET_VAL 60 /* First UDP packet */
122 #define PFTM_UDP_SINGLE_VAL 30 /* Unidirectional */
123 #define PFTM_UDP_MULTIPLE_VAL 60 /* Bidirectional */
124 #define PFTM_ICMP_FIRST_PACKET_VAL 20 /* First ICMP packet */
125 #define PFTM_ICMP_ERROR_REPLY_VAL 10 /* Got error response */
126 #define PFTM_OTHER_FIRST_PACKET_VAL 60 /* First packet */
127 #define PFTM_OTHER_SINGLE_VAL 30 /* Unidirectional */
128 #define PFTM_OTHER_MULTIPLE_VAL 60 /* Bidirectional */
129 #define PFTM_FRAG_VAL 30 /* Fragment expire */
130 #define PFTM_INTERVAL_VAL 10 /* Expire interval */
131 #define PFTM_SRC_NODE_VAL 0 /* Source tracking */
132 #define PFTM_TS_DIFF_VAL 30 /* Allowed TS diff */
134 enum { PF_NOPFROUTE, PF_FASTROUTE, PF_ROUTETO, PF_DUPTO, PF_REPLYTO };
135 enum { PF_LIMIT_STATES, PF_LIMIT_SRC_NODES, PF_LIMIT_FRAGS,
136 PF_LIMIT_TABLES, PF_LIMIT_TABLE_ENTRIES, PF_LIMIT_MAX };
137 #define PF_POOL_IDMASK 0x0f
138 enum { PF_POOL_NONE, PF_POOL_BITMASK, PF_POOL_RANDOM,
139 PF_POOL_SRCHASH, PF_POOL_ROUNDROBIN };
140 enum { PF_ADDR_ADDRMASK, PF_ADDR_NOROUTE, PF_ADDR_DYNIFTL,
141 PF_ADDR_TABLE, PF_ADDR_RTLABEL, PF_ADDR_URPFFAILED,
143 #define PF_POOL_TYPEMASK 0x0f
144 #define PF_POOL_STICKYADDR 0x20
145 #define PF_WSCALE_FLAG 0x80
146 #define PF_WSCALE_MASK 0x0f
149 #define PF_LOG_ALL 0x02
150 #define PF_LOG_SOCKET_LOOKUP 0x04
152 #define PR_WAITOK 0x0001 /* M_WAITOK */
153 #define PR_NOWAIT 0x0002 /* M_NOWAIT */
154 #define PR_LIMITFAIL 0x0004 /* M_CANFAIL */
155 #define PR_ZERO 0x0008 /* M_ZERO */
165 } pfa; /* 128-bit address */
168 #define addr8 pfa.addr8
169 #define addr16 pfa.addr16
170 #define addr32 pfa.addr32
173 #define PF_TABLE_NAME_SIZE 32
175 #define PFI_AFLAG_NETWORK 0x01
176 #define PFI_AFLAG_BROADCAST 0x02
177 #define PFI_AFLAG_PEER 0x04
178 #define PFI_AFLAG_MODEMASK 0x07
179 #define PFI_AFLAG_NOALIAS 0x08
181 struct pf_addr_wrap {
187 char ifname[IFNAMSIZ];
188 char tblname[PF_TABLE_NAME_SIZE];
189 char rtlabelname[RTLABEL_LEN];
193 struct pfi_dynaddr *dyn;
194 struct pfr_ktable *tbl;
198 u_int8_t type; /* PF_ADDR_* */
199 u_int8_t iflags; /* PFI_AFLAG_* */
205 TAILQ_ENTRY(pfi_dynaddr) entry;
206 struct pf_addr pfid_addr4;
207 struct pf_addr pfid_mask4;
208 struct pf_addr pfid_addr6;
209 struct pf_addr pfid_mask6;
210 struct pfr_ktable *pfid_kt;
211 struct pfi_kif *pfid_kif;
212 void *pfid_hook_cookie;
213 int pfid_net; /* mask or 128 */
214 int pfid_acnt4; /* address count IPv4 */
215 int pfid_acnt6; /* address count IPv6 */
216 sa_family_t pfid_af; /* rule af */
217 u_int8_t pfid_iflags; /* PFI_AFLAG_* */
221 * Address manipulation macros
224 #define NTOHS(x) (x) = ntohs((__uint16_t)(x))
225 #define HTONS(x) (x) = htons((__uint16_t)(x))
230 #define PFLOG_MODVER 44
231 #define PFSYNC_MODVER 44
233 #define PFLOG_MINVER 44
234 #define PFLOG_PREFVER PFLOG_MODVER
235 #define PFLOG_MAXVER 44
236 #define PFSYNC_MINVER 44
237 #define PFSYNC_PREFVER PFSYNC_MODVER
238 #define PFSYNC_MAXVER 44
240 /* prototyped for pf_subr.c */
242 TAILQ_ENTRY(hook_desc) hd_list;
243 void (*hd_fn)(void *);
246 TAILQ_HEAD(hook_desc_head, hook_desc);
248 void *hook_establish(struct hook_desc_head *, int, void (*)(void *), void *);
249 void hook_disestablish(struct hook_desc_head *, void *);
250 void dohooks(struct hook_desc_head *, int);
252 #define HOOK_REMOVE 0x01
253 #define HOOK_FREE 0x02
263 #define PF_INET6_ONLY
269 #define PF_INET_INET6
275 #define PF_INET_INET6
279 /* Both IPv4 and IPv6 */
282 #define PF_AEQ(a, b, c) \
283 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \
284 ((a)->addr32[3] == (b)->addr32[3] && \
285 (a)->addr32[2] == (b)->addr32[2] && \
286 (a)->addr32[1] == (b)->addr32[1] && \
287 (a)->addr32[0] == (b)->addr32[0])) \
289 #define PF_ANEQ(a, b, c) \
290 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \
291 ((a)->addr32[3] != (b)->addr32[3] || \
292 (a)->addr32[2] != (b)->addr32[2] || \
293 (a)->addr32[1] != (b)->addr32[1] || \
294 (a)->addr32[0] != (b)->addr32[0])) \
296 #define PF_AZERO(a, c) \
297 ((c == AF_INET && !(a)->addr32[0]) || \
298 (!(a)->addr32[0] && !(a)->addr32[1] && \
299 !(a)->addr32[2] && !(a)->addr32[3] )) \
301 #define PF_MATCHA(n, a, m, b, f) \
302 pf_match_addr(n, a, m, b, f)
304 #define PF_ACPY(a, b, f) \
307 #define PF_AINC(a, f) \
310 #define PF_POOLMASK(a, b, c, d, f) \
311 pf_poolmask(a, b, c, d, f)
319 #define PF_AEQ(a, b, c) \
320 ((a)->addr32[3] == (b)->addr32[3] && \
321 (a)->addr32[2] == (b)->addr32[2] && \
322 (a)->addr32[1] == (b)->addr32[1] && \
323 (a)->addr32[0] == (b)->addr32[0]) \
325 #define PF_ANEQ(a, b, c) \
326 ((a)->addr32[3] != (b)->addr32[3] || \
327 (a)->addr32[2] != (b)->addr32[2] || \
328 (a)->addr32[1] != (b)->addr32[1] || \
329 (a)->addr32[0] != (b)->addr32[0]) \
331 #define PF_AZERO(a, c) \
332 (!(a)->addr32[0] && \
337 #define PF_MATCHA(n, a, m, b, f) \
338 pf_match_addr(n, a, m, b, f)
340 #define PF_ACPY(a, b, f) \
343 #define PF_AINC(a, f) \
346 #define PF_POOLMASK(a, b, c, d, f) \
347 pf_poolmask(a, b, c, d, f)
354 #define PF_AEQ(a, b, c) \
355 ((a)->addr32[0] == (b)->addr32[0])
357 #define PF_ANEQ(a, b, c) \
358 ((a)->addr32[0] != (b)->addr32[0])
360 #define PF_AZERO(a, c) \
363 #define PF_MATCHA(n, a, m, b, f) \
364 pf_match_addr(n, a, m, b, f)
366 #define PF_ACPY(a, b, f) \
367 (a)->v4.s_addr = (b)->v4.s_addr
369 #define PF_AINC(a, f) \
371 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \
374 #define PF_POOLMASK(a, b, c, d, f) \
376 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \
377 (((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \
380 #endif /* PF_INET_ONLY */
381 #endif /* PF_INET6_ONLY */
382 #endif /* PF_INET_INET6 */
384 #define PF_MISMATCHAW(aw, x, af, neg, ifp) \
386 (((aw)->type == PF_ADDR_NOROUTE && \
387 pf_routable((x), (af), NULL)) || \
388 (((aw)->type == PF_ADDR_URPFFAILED && (ifp) != NULL && \
389 pf_routable((x), (af), (ifp))) || \
390 ((aw)->type == PF_ADDR_RTLABEL && \
391 !pf_rtlabel_match((x), (af), (aw))) || \
392 ((aw)->type == PF_ADDR_TABLE && \
393 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \
394 ((aw)->type == PF_ADDR_DYNIFTL && \
395 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \
396 ((aw)->type == PF_ADDR_RANGE && \
397 !pf_match_addr_range(&(aw)->v.a.addr, \
398 &(aw)->v.a.mask, (x), (af))) || \
399 ((aw)->type == PF_ADDR_ADDRMASK && \
400 !PF_AZERO(&(aw)->v.a.mask, (af)) && \
401 !PF_MATCHA(0, &(aw)->v.a.addr, \
402 &(aw)->v.a.mask, (x), (af))))) != \
416 struct pf_rule_addr {
417 struct pf_addr_wrap addr;
424 struct pf_addr_wrap addr;
425 TAILQ_ENTRY(pf_pooladdr) entries;
426 char ifname[IFNAMSIZ];
430 TAILQ_HEAD(pf_palist, pf_pooladdr);
432 struct pf_poolhashkey {
437 } pfk; /* 128-bit hash key */
438 #define key8 pfk.key8
439 #define key16 pfk.key16
440 #define key32 pfk.key32
444 struct pf_palist list;
445 struct pf_pooladdr *cur;
446 struct pf_poolhashkey key;
447 struct pf_addr counter;
449 u_int16_t proxy_port[2];
455 /* A packed Operating System description for fingerprinting */
456 typedef u_int32_t pf_osfp_t;
457 #define PF_OSFP_ANY ((pf_osfp_t)0)
458 #define PF_OSFP_UNKNOWN ((pf_osfp_t)-1)
459 #define PF_OSFP_NOMATCH ((pf_osfp_t)-2)
461 struct pf_osfp_entry {
462 SLIST_ENTRY(pf_osfp_entry) fp_entry;
465 #define PF_OSFP_EXPANDED 0x001 /* expanded entry */
466 #define PF_OSFP_GENERIC 0x002 /* generic signature */
467 #define PF_OSFP_NODETAIL 0x004 /* no p0f details */
468 #define PF_OSFP_LEN 32
469 char fp_class_nm[PF_OSFP_LEN];
470 char fp_version_nm[PF_OSFP_LEN];
471 char fp_subtype_nm[PF_OSFP_LEN];
473 #define PF_OSFP_ENTRY_EQ(a, b) \
474 ((a)->fp_os == (b)->fp_os && \
475 memcmp((a)->fp_class_nm, (b)->fp_class_nm, PF_OSFP_LEN) == 0 && \
476 memcmp((a)->fp_version_nm, (b)->fp_version_nm, PF_OSFP_LEN) == 0 && \
477 memcmp((a)->fp_subtype_nm, (b)->fp_subtype_nm, PF_OSFP_LEN) == 0)
479 /* handle pf_osfp_t packing */
480 #define _FP_RESERVED_BIT 1 /* For the special negative #defines */
481 #define _FP_UNUSED_BITS 1
482 #define _FP_CLASS_BITS 10 /* OS Class (Windows, Linux) */
483 #define _FP_VERSION_BITS 10 /* OS version (95, 98, NT, 2.4.54, 3.2) */
484 #define _FP_SUBTYPE_BITS 10 /* patch level (NT SP4, SP3, ECN patch) */
485 #define PF_OSFP_UNPACK(osfp, class, version, subtype) do { \
486 (class) = ((osfp) >> (_FP_VERSION_BITS+_FP_SUBTYPE_BITS)) & \
487 ((1 << _FP_CLASS_BITS) - 1); \
488 (version) = ((osfp) >> _FP_SUBTYPE_BITS) & \
489 ((1 << _FP_VERSION_BITS) - 1);\
490 (subtype) = (osfp) & ((1 << _FP_SUBTYPE_BITS) - 1); \
492 #define PF_OSFP_PACK(osfp, class, version, subtype) do { \
493 (osfp) = ((class) & ((1 << _FP_CLASS_BITS) - 1)) << (_FP_VERSION_BITS \
494 + _FP_SUBTYPE_BITS); \
495 (osfp) |= ((version) & ((1 << _FP_VERSION_BITS) - 1)) << \
497 (osfp) |= (subtype) & ((1 << _FP_SUBTYPE_BITS) - 1); \
500 /* the fingerprint of an OSes TCP SYN packet */
501 typedef u_int64_t pf_tcpopts_t;
502 struct pf_os_fingerprint {
503 SLIST_HEAD(pf_osfp_enlist, pf_osfp_entry) fp_oses; /* list of matches */
504 pf_tcpopts_t fp_tcpopts; /* packed TCP options */
505 u_int16_t fp_wsize; /* TCP window size */
506 u_int16_t fp_psize; /* ip->ip_len */
507 u_int16_t fp_mss; /* TCP MSS */
509 #define PF_OSFP_WSIZE_MOD 0x0001 /* Window modulus */
510 #define PF_OSFP_WSIZE_DC 0x0002 /* Window don't care */
511 #define PF_OSFP_WSIZE_MSS 0x0004 /* Window multiple of MSS */
512 #define PF_OSFP_WSIZE_MTU 0x0008 /* Window multiple of MTU */
513 #define PF_OSFP_PSIZE_MOD 0x0010 /* packet size modulus */
514 #define PF_OSFP_PSIZE_DC 0x0020 /* packet size don't care */
515 #define PF_OSFP_WSCALE 0x0040 /* TCP window scaling */
516 #define PF_OSFP_WSCALE_MOD 0x0080 /* TCP window scale modulus */
517 #define PF_OSFP_WSCALE_DC 0x0100 /* TCP window scale dont-care */
518 #define PF_OSFP_MSS 0x0200 /* TCP MSS */
519 #define PF_OSFP_MSS_MOD 0x0400 /* TCP MSS modulus */
520 #define PF_OSFP_MSS_DC 0x0800 /* TCP MSS dont-care */
521 #define PF_OSFP_DF 0x1000 /* IPv4 don't fragment bit */
522 #define PF_OSFP_TS0 0x2000 /* Zero timestamp */
523 #define PF_OSFP_INET6 0x4000 /* IPv6 */
524 u_int8_t fp_optcnt; /* TCP option count */
525 u_int8_t fp_wscale; /* TCP window scaling */
526 u_int8_t fp_ttl; /* IPv4 TTL */
527 #define PF_OSFP_MAXTTL_OFFSET 40
528 /* TCP options packing */
529 #define PF_OSFP_TCPOPT_NOP 0x0 /* TCP NOP option */
530 #define PF_OSFP_TCPOPT_WSCALE 0x1 /* TCP window scaling option */
531 #define PF_OSFP_TCPOPT_MSS 0x2 /* TCP max segment size opt */
532 #define PF_OSFP_TCPOPT_SACK 0x3 /* TCP SACK OK option */
533 #define PF_OSFP_TCPOPT_TS 0x4 /* TCP timestamp option */
534 #define PF_OSFP_TCPOPT_BITS 3 /* bits used by each option */
535 #define PF_OSFP_MAX_OPTS \
536 (sizeof(((struct pf_os_fingerprint *)0)->fp_tcpopts) * 8) \
537 / PF_OSFP_TCPOPT_BITS
539 SLIST_ENTRY(pf_os_fingerprint) fp_next;
542 struct pf_osfp_ioctl {
543 struct pf_osfp_entry fp_os;
544 pf_tcpopts_t fp_tcpopts; /* packed TCP options */
545 u_int16_t fp_wsize; /* TCP window size */
546 u_int16_t fp_psize; /* ip->ip_len */
547 u_int16_t fp_mss; /* TCP MSS */
549 u_int8_t fp_optcnt; /* TCP option count */
550 u_int8_t fp_wscale; /* TCP window scaling */
551 u_int8_t fp_ttl; /* IPv4 TTL */
553 int fp_getnum; /* DIOCOSFPGET number */
562 #define PF_ANCHOR_NAME_SIZE 64
565 struct pf_rule_addr src;
566 struct pf_rule_addr dst;
567 #define PF_SKIP_IFP 0
568 #define PF_SKIP_DIR 1
570 #define PF_SKIP_PROTO 3
571 #define PF_SKIP_SRC_ADDR 4
572 #define PF_SKIP_SRC_PORT 5
573 #define PF_SKIP_DST_ADDR 6
574 #define PF_SKIP_DST_PORT 7
575 #define PF_SKIP_COUNT 8
576 union pf_rule_ptr skip[PF_SKIP_COUNT];
577 #define PF_RULE_LABEL_SIZE 64
578 char label[PF_RULE_LABEL_SIZE];
579 #define PF_QNAME_SIZE 64
580 char ifname[IFNAMSIZ];
581 char qname[PF_QNAME_SIZE];
582 char pqname[PF_QNAME_SIZE];
583 #define PF_TAG_NAME_SIZE 64
584 char tagname[PF_TAG_NAME_SIZE];
585 char match_tagname[PF_TAG_NAME_SIZE];
587 char overload_tblname[PF_TABLE_NAME_SIZE];
589 TAILQ_ENTRY(pf_rule) entries;
590 struct pf_pool rpool;
592 u_int64_t evaluations;
593 u_int64_t packets[2];
597 struct pf_anchor *anchor;
598 struct pfr_ktable *overload_tbl;
600 pf_osfp_t os_fingerprint;
603 u_int32_t timeout[PFTM_MAX];
604 u_int32_t states_cur;
605 u_int32_t states_tot;
606 u_int32_t max_states;
608 u_int32_t max_src_nodes;
609 u_int32_t max_src_states;
610 u_int32_t max_src_conn;
623 u_int16_t return_icmp;
624 u_int16_t return_icmp6;
629 struct pf_rule_uid uid;
630 struct pf_rule_gid gid;
639 u_int8_t match_tag_not;
642 #define PF_STATE_NORMAL 0x1
643 #define PF_STATE_MODULATE 0x2
644 #define PF_STATE_SYNPROXY 0x3
658 u_int8_t anchor_relative;
659 u_int8_t anchor_wildcard;
661 #define PF_FLUSH 0x01
662 #define PF_FLUSH_GLOBAL 0x02
670 #define PF_PICKUPS_UNSPECIFIED 0
671 #define PF_PICKUPS_DISABLED 1
672 #define PF_PICKUPS_HASHONLY 2
673 #define PF_PICKUPS_ENABLED 3
674 u_int8_t pickup_mode;
675 u_int8_t unused01; /* available for use */
679 #define PFRULE_DROP 0x0000
680 #define PFRULE_RETURNRST 0x0001
681 #define PFRULE_FRAGMENT 0x0002
682 #define PFRULE_RETURNICMP 0x0004
683 #define PFRULE_RETURN 0x0008
684 #define PFRULE_NOSYNC 0x0010
685 #define PFRULE_SRCTRACK 0x0020 /* track source states */
686 #define PFRULE_RULESRCTRACK 0x0040 /* per rule */
689 #define PFRULE_NODF 0x0100
690 #define PFRULE_FRAGCROP 0x0200 /* non-buffering frag cache */
691 #define PFRULE_FRAGDROP 0x0400 /* drop funny fragments */
692 #define PFRULE_RANDOMID 0x0800
693 #define PFRULE_REASSEMBLE_TCP 0x1000
694 #define PFRULE_SET_TOS 0x2000
696 /* rule flags again */
697 #define PFRULE_IFBOUND 0x00010000 /* if-bound */
698 #define PFRULE_STATESLOPPY 0x00020000 /* sloppy state tracking */
700 #define PFSTATE_HIWAT 10000 /* default state table size */
701 #define PFSTATE_ADAPT_START 6000 /* default adaptive timeout start */
702 #define PFSTATE_ADAPT_END 12000 /* default adaptive timeout end */
705 struct pf_threshold {
707 #define PF_THRESHOLD_MULT 1000
708 #define PF_THRESHOLD_MAX 0xffffffff / PF_THRESHOLD_MULT
715 RB_ENTRY(pf_src_node) entry;
717 struct pf_addr raddr;
718 union pf_rule_ptr rule;
721 u_int64_t packets[2];
724 struct pf_threshold conn_rate;
731 #define PFSNODE_HIWAT 10000 /* default source node table size */
733 struct pf_state_scrub {
734 struct timeval pfss_last; /* time received last packet */
735 u_int32_t pfss_tsecr; /* last echoed timestamp */
736 u_int32_t pfss_tsval; /* largest timestamp */
737 u_int32_t pfss_tsval0; /* original timestamp */
738 u_int16_t pfss_flags;
739 #define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */
740 #define PFSS_PAWS 0x0010 /* stricter PAWS checks */
741 #define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */
742 #define PFSS_DATA_TS 0x0040 /* timestamp on data packets */
743 #define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */
744 u_int8_t pfss_ttl; /* stashed TTL */
746 u_int32_t pfss_ts_mod; /* timestamp modulation */
749 struct pf_state_host {
755 struct pf_state_peer {
756 struct pf_state_scrub *scrub; /* state is scrubbed */
757 u_int32_t seqlo; /* Max sequence number sent */
758 u_int32_t seqhi; /* Max the other end ACKd + win */
759 u_int32_t seqdiff; /* Sequence number modulator */
760 u_int16_t max_win; /* largest window (pre scaling) */
761 u_int16_t mss; /* Maximum segment size option */
762 u_int8_t state; /* active state level */
763 u_int8_t wscale; /* window scaling factor */
764 u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */
768 TAILQ_HEAD(pf_state_queue, pf_state);
770 /* keep synced with struct pf_state_key, used in RB_FIND */
771 struct pf_state_key_cmp {
772 struct pf_addr addr[2];
779 struct pf_state_item {
780 TAILQ_ENTRY(pf_state_item) entry;
784 TAILQ_HEAD(pf_statelisthead, pf_state_item);
786 struct pf_state_key {
787 struct pf_addr addr[2];
793 RB_ENTRY(pf_state_key) entry;
794 struct pf_statelisthead states;
795 struct pf_state_key *reverse;
799 #define PF_STATE_KEY_HASH_LENGTH offsetof(struct pf_state_key, pad[0])
801 /* keep synced with struct pf_state, used in RB_FIND */
802 struct pf_state_cmp {
809 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
818 TAILQ_ENTRY(pf_state) entry_list;
819 RB_ENTRY(pf_state) entry_id;
820 struct pf_state_peer src;
821 struct pf_state_peer dst;
822 union pf_rule_ptr rule;
823 union pf_rule_ptr anchor;
824 union pf_rule_ptr nat_rule;
825 struct pf_addr rt_addr;
826 struct pf_state_key *key[2]; /* addresses stack and wire */
828 struct pfi_kif *rt_kif;
829 struct pf_src_node *src_node;
830 struct pf_src_node *nat_src_node;
831 u_int64_t packets[2];
836 u_int32_t pfsync_time;
839 u_int8_t state_flags;
842 u_int8_t pickup_mode;
851 #define PFSTATE_ALLOWOPTS 0x01
852 #define PFSTATE_SLOPPY 0x02
853 #define PFSTATE_STACK_GLOBAL 0x04 /* pf_state_key[1] is global */
854 #define PFSTATE_CREATEINPROG 0x08 /* prevent find from finding it */
855 #define PFSTATE_HALF_DUPLEX 0x10 /* collision against translation */
860 #define PFSTATE_NOSYNC 0x01
861 #define PFSTATE_FROMSYNC 0x02
862 #define PFSTATE_STALE 0x04
865 * Unified state structures for pulling states out of the kernel
866 * used by pfsync(4) and the pf(4) ioctl.
868 struct pfsync_state_scrub {
869 u_int16_t pfss_flags;
870 u_int8_t pfss_ttl; /* stashed TTL */
871 #define PFSYNC_SCRUB_FLAG_VALID 0x01
873 u_int32_t pfss_ts_mod; /* timestamp modulation */
876 struct pfsync_state_peer {
877 struct pfsync_state_scrub scrub; /* state is scrubbed */
878 u_int32_t seqlo; /* Max sequence number sent */
879 u_int32_t seqhi; /* Max the other end ACKd + win */
880 u_int32_t seqdiff; /* Sequence number modulator */
881 u_int16_t max_win; /* largest window (pre scaling) */
882 u_int16_t mss; /* Maximum segment size option */
883 u_int8_t state; /* active state level */
884 u_int8_t wscale; /* window scaling factor */
888 struct pfsync_state_key {
889 struct pf_addr addr[2];
893 struct pfsync_state {
895 char ifname[IFNAMSIZ];
896 struct pfsync_state_key key[2];
897 struct pfsync_state_peer src;
898 struct pfsync_state_peer dst;
899 struct pf_addr rt_addr;
905 u_int32_t packets[2][2];
906 u_int32_t bytes[2][2];
912 u_int8_t state_flags;
916 u_int8_t pickup_mode;
918 u_int16_t reserved01; /* future expansion */
919 u_int32_t reserved02;
920 u_int16_t reserved03[8];
921 u_int32_t reserved04[8];
924 #define PFSYNC_FLAG_COMPRESS 0x01
925 #define PFSYNC_FLAG_STALE 0x02
926 #define PFSYNC_FLAG_SRCNODE 0x04
927 #define PFSYNC_FLAG_NATSRCNODE 0x08
928 #define PFSTATE_GOT_SYN_MASK (PFSTATE_GOT_SYN1|PFSTATE_GOT_SYN2)
929 #define PFSTATE_GOT_SYN1 0x04 /* got SYN in one direction */
930 #define PFSTATE_GOT_SYN2 0x08 /* got SYN in the other direction */
932 /* for copies to/from network byte order */
933 /* ioctl interface also uses network byte order */
934 #define pf_state_peer_hton(s,d) do { \
935 (d)->seqlo = htonl((s)->seqlo); \
936 (d)->seqhi = htonl((s)->seqhi); \
937 (d)->seqdiff = htonl((s)->seqdiff); \
938 (d)->max_win = htons((s)->max_win); \
939 (d)->mss = htons((s)->mss); \
940 (d)->state = (s)->state; \
941 (d)->wscale = (s)->wscale; \
943 (d)->scrub.pfss_flags = \
944 htons((s)->scrub->pfss_flags & PFSS_TIMESTAMP); \
945 (d)->scrub.pfss_ttl = (s)->scrub->pfss_ttl; \
946 (d)->scrub.pfss_ts_mod = htonl((s)->scrub->pfss_ts_mod);\
947 (d)->scrub.scrub_flag = PFSYNC_SCRUB_FLAG_VALID; \
951 #define pf_state_peer_ntoh(s,d) do { \
952 (d)->seqlo = ntohl((s)->seqlo); \
953 (d)->seqhi = ntohl((s)->seqhi); \
954 (d)->seqdiff = ntohl((s)->seqdiff); \
955 (d)->max_win = ntohs((s)->max_win); \
956 (d)->mss = ntohs((s)->mss); \
957 (d)->state = (s)->state; \
958 (d)->wscale = (s)->wscale; \
959 if ((s)->scrub.scrub_flag == PFSYNC_SCRUB_FLAG_VALID && \
960 (d)->scrub != NULL) { \
961 (d)->scrub->pfss_flags = \
962 ntohs((s)->scrub.pfss_flags) & PFSS_TIMESTAMP; \
963 (d)->scrub->pfss_ttl = (s)->scrub.pfss_ttl; \
964 (d)->scrub->pfss_ts_mod = ntohl((s)->scrub.pfss_ts_mod);\
968 #define pf_state_counter_hton(s,d) do { \
969 d[0] = htonl((s>>32)&0xffffffff); \
970 d[1] = htonl(s&0xffffffff); \
973 #define pf_state_counter_from_pfsync(s) \
974 (((u_int64_t)(s[0])<<32) | (u_int64_t)(s[1]))
976 #define pf_state_counter_ntoh(s,d) do { \
982 TAILQ_HEAD(pf_rulequeue, pf_rule);
988 struct pf_rulequeue queues[2];
990 struct pf_rulequeue *ptr;
991 struct pf_rule **ptr_array;
996 } rules[PF_RULESET_MAX];
997 struct pf_anchor *anchor;
1003 RB_HEAD(pf_anchor_global, pf_anchor);
1004 RB_HEAD(pf_anchor_node, pf_anchor);
1006 RB_ENTRY(pf_anchor) entry_global;
1007 RB_ENTRY(pf_anchor) entry_node;
1008 struct pf_anchor *parent;
1009 struct pf_anchor_node children;
1010 char name[PF_ANCHOR_NAME_SIZE];
1011 char path[MAXPATHLEN];
1012 struct pf_ruleset ruleset;
1013 int refcnt; /* anchor rules */
1016 RB_PROTOTYPE(pf_anchor_global, pf_anchor, entry_global, pf_anchor_compare);
1017 RB_PROTOTYPE(pf_anchor_node, pf_anchor, entry_node, pf_anchor_compare);
1019 #define PF_RESERVED_ANCHOR "_pf"
1021 #define PFR_TFLAG_PERSIST 0x00000001
1022 #define PFR_TFLAG_CONST 0x00000002
1023 #define PFR_TFLAG_ACTIVE 0x00000004
1024 #define PFR_TFLAG_INACTIVE 0x00000008
1025 #define PFR_TFLAG_REFERENCED 0x00000010
1026 #define PFR_TFLAG_REFDANCHOR 0x00000020
1027 #define PFR_TFLAG_COUNTERS 0x00000040
1028 /* Adjust masks below when adding flags. */
1029 #define PFR_TFLAG_USRMASK 0x00000043
1030 #define PFR_TFLAG_SETMASK 0x0000003C
1031 #define PFR_TFLAG_ALLMASK 0x0000007F
1034 char pfrt_anchor[MAXPATHLEN];
1035 char pfrt_name[PF_TABLE_NAME_SIZE];
1036 u_int32_t pfrt_flags;
1037 u_int8_t pfrt_fback;
1040 enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED,
1041 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE,
1042 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_NOCOUNT, PFR_FB_MAX };
1046 struct in_addr _pfra_ip4addr;
1047 struct in6_addr _pfra_ip6addr;
1052 u_int8_t pfra_fback;
1054 #define pfra_ip4addr pfra_u._pfra_ip4addr
1055 #define pfra_ip6addr pfra_u._pfra_ip6addr
1057 enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX };
1058 enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX };
1059 #define PFR_OP_XPASS PFR_OP_ADDR_MAX
1062 struct pfr_addr pfras_a;
1063 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
1064 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
1068 enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX };
1071 struct pfr_table pfrts_t;
1072 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
1073 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
1074 u_int64_t pfrts_match;
1075 u_int64_t pfrts_nomatch;
1078 int pfrts_refcnt[PFR_REFCNT_MAX];
1080 #define pfrts_name pfrts_t.pfrt_name
1081 #define pfrts_flags pfrts_t.pfrt_flags
1083 struct pfr_kcounters {
1084 u_int64_t pfrkc_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
1085 u_int64_t pfrkc_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
1088 SLIST_HEAD(pfr_kentryworkq, pfr_kentry);
1090 struct radix_node pfrke_node[2];
1091 union sockaddr_union pfrke_sa;
1092 SLIST_ENTRY(pfr_kentry) pfrke_workq;
1095 struct pfr_kcounters *pfrke_counters;
1097 struct pfr_kroute *pfrke_route;
1104 u_int8_t pfrke_mark;
1105 u_int8_t pfrke_intrpool;
1107 #define pfrke_counters u.pfrke_counters
1108 #define pfrke_route u.pfrke_route
1111 SLIST_HEAD(pfr_ktableworkq, pfr_ktable);
1112 RB_HEAD(pfr_ktablehead, pfr_ktable);
1114 struct pfr_tstats pfrkt_ts;
1115 RB_ENTRY(pfr_ktable) pfrkt_tree;
1116 SLIST_ENTRY(pfr_ktable) pfrkt_workq;
1117 struct radix_node_head *pfrkt_ip4;
1118 struct radix_node_head *pfrkt_ip6;
1119 struct pfr_ktable *pfrkt_shadow;
1120 struct pfr_ktable *pfrkt_root;
1121 struct pf_ruleset *pfrkt_rs;
1125 #define pfrkt_t pfrkt_ts.pfrts_t
1126 #define pfrkt_name pfrkt_t.pfrt_name
1127 #define pfrkt_anchor pfrkt_t.pfrt_anchor
1128 #define pfrkt_ruleset pfrkt_t.pfrt_ruleset
1129 #define pfrkt_flags pfrkt_t.pfrt_flags
1130 #define pfrkt_cnt pfrkt_ts.pfrts_cnt
1131 #define pfrkt_refcnt pfrkt_ts.pfrts_refcnt
1132 #define pfrkt_packets pfrkt_ts.pfrts_packets
1133 #define pfrkt_bytes pfrkt_ts.pfrts_bytes
1134 #define pfrkt_match pfrkt_ts.pfrts_match
1135 #define pfrkt_nomatch pfrkt_ts.pfrts_nomatch
1136 #define pfrkt_tzero pfrkt_ts.pfrts_tzero
1138 RB_HEAD(pf_state_tree, pf_state_key);
1139 RB_PROTOTYPE(pf_state_tree, pf_state_key, entry, pf_state_compare_key);
1140 RB_HEAD(pf_state_rtree, pf_state_key);
1141 RB_PROTOTYPE(pf_state_rtree, pf_state_key, entry, pf_state_compare_rkey);
1143 RB_HEAD(pf_state_tree_ext_gwy, pf_state_key);
1144 RB_PROTOTYPE(pf_state_tree_ext_gwy, pf_state_key,
1145 entry_ext_gwy, pf_state_compare_ext_gwy);
1148 char pfif_name[IFNAMSIZ];
1149 u_int64_t pfif_packets[2][2][2];
1150 u_int64_t pfif_bytes[2][2][2];
1151 u_int64_t pfif_addcnt;
1152 u_int64_t pfif_delcnt;
1159 TAILQ_HEAD(pfi_grouphead, pfi_kif);
1160 TAILQ_HEAD(pfi_statehead, pfi_kif);
1161 RB_HEAD(pfi_ifhead, pfi_kif);
1164 extern struct pf_state_tree pf_statetbl[MAXCPU+1];
1166 /* keep synced with pfi_kif, used in RB_FIND */
1167 struct pfi_kif_cmp {
1168 char pfik_name[IFNAMSIZ];
1172 char pfik_name[IFNAMSIZ];
1173 RB_ENTRY(pfi_kif) pfik_tree;
1174 u_int64_t pfik_packets[2][2][2];
1175 u_int64_t pfik_bytes[2][2][2];
1176 u_int32_t pfik_tzero;
1178 struct ifnet *pfik_ifp;
1179 struct ifg_group *pfik_group;
1182 TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs;
1191 #define PFI_IFLAG_GROUP 0x0001 /* group of interfaces */
1192 #define PFI_IFLAG_INSTANCE 0x0002 /* single instance */
1193 #define PFI_IFLAG_CLONABLE 0x0010 /* clonable group */
1194 #define PFI_IFLAG_DYNAMIC 0x0020 /* dynamic group */
1195 #define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */
1196 #define PFI_IFLAG_PLACEHOLDER 0x8000 /* placeholder group/interface */
1205 u_int64_t tot_len; /* Make Mickey money */
1211 struct icmp6_hdr *icmp6;
1216 struct pf_rule *nat_rule; /* nat/rdr rule applied to packet */
1219 struct pf_addr *src; /* src address */
1220 struct pf_addr *dst; /* dst address */
1224 u_int32_t p_len; /* total length of payload */
1227 u_int16_t *proto_sum;
1228 u_int16_t flags; /* Let SCRUB trigger behavior in
1229 * state code. Easier than tags */
1230 #define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */
1231 #define PFDESC_IP_REAS 0x0002 /* IP frags would've been reassembled */
1235 u_int8_t dir; /* direction */
1236 u_int8_t sidx; /* key index for source */
1237 u_int8_t didx; /* key index for destination */
1238 u_int8_t not_cpu_localized; /* translation not localized */
1241 /* flags for RDR options */
1242 #define PF_DPORT_RANGE 0x01 /* Dest port uses range */
1243 #define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */
1245 /* Reasons code for passing/dropping a packet */
1246 #define PFRES_MATCH 0 /* Explicit match of a rule */
1247 #define PFRES_BADOFF 1 /* Bad offset for pull_hdr */
1248 #define PFRES_FRAG 2 /* Dropping following fragment */
1249 #define PFRES_SHORT 3 /* Dropping short packet */
1250 #define PFRES_NORM 4 /* Dropping by normalizer */
1251 #define PFRES_MEMORY 5 /* Dropped due to lacking mem */
1252 #define PFRES_TS 6 /* Bad TCP Timestamp (RFC1323) */
1253 #define PFRES_CONGEST 7 /* Congestion (of ipintrq) */
1254 #define PFRES_IPOPTIONS 8 /* IP option */
1255 #define PFRES_PROTCKSUM 9 /* Protocol checksum invalid */
1256 #define PFRES_BADSTATE 10 /* State mismatch */
1257 #define PFRES_STATEINS 11 /* State insertion failure */
1258 #define PFRES_MAXSTATES 12 /* State limit */
1259 #define PFRES_SRCLIMIT 13 /* Source node/conn limit */
1260 #define PFRES_SYNPROXY 14 /* SYN proxy */
1261 #define PFRES_MAX 15 /* total+1 */
1263 #define PFRES_NAMES { \
1282 /* Counters for other things we want to keep track of */
1283 #define LCNT_STATES 0 /* states */
1284 #define LCNT_SRCSTATES 1 /* max-src-states */
1285 #define LCNT_SRCNODES 2 /* max-src-nodes */
1286 #define LCNT_SRCCONN 3 /* max-src-conn */
1287 #define LCNT_SRCCONNRATE 4 /* max-src-conn-rate */
1288 #define LCNT_OVERLOAD_TABLE 5 /* entry added to overload table */
1289 #define LCNT_OVERLOAD_FLUSH 6 /* state entries flushed */
1290 #define LCNT_MAX 7 /* total+1 */
1292 #define LCNT_NAMES { \
1293 "max states per rule", \
1297 "max-src-conn-rate", \
1298 "overload table insertion", \
1299 "overload flush states", \
1303 /* UDP state enumeration */
1304 #define PFUDPS_NO_TRAFFIC 0
1305 #define PFUDPS_SINGLE 1
1306 #define PFUDPS_MULTIPLE 2
1308 #define PFUDPS_NSTATES 3 /* number of state levels */
1310 #define PFUDPS_NAMES { \
1317 /* Other protocol state enumeration */
1318 #define PFOTHERS_NO_TRAFFIC 0
1319 #define PFOTHERS_SINGLE 1
1320 #define PFOTHERS_MULTIPLE 2
1322 #define PFOTHERS_NSTATES 3 /* number of state levels */
1324 #define PFOTHERS_NAMES { \
1331 #define FCNT_STATE_SEARCH 0
1332 #define FCNT_STATE_INSERT 1
1333 #define FCNT_STATE_REMOVALS 2
1336 #define SCNT_SRC_NODE_SEARCH 0
1337 #define SCNT_SRC_NODE_INSERT 1
1338 #define SCNT_SRC_NODE_REMOVALS 2
1341 #define ACTION_SET(a, x) \
1347 #define REASON_SET(a, x) \
1349 u_short *r = (a); /* keep -Waddress happy */ \
1352 if ((x) < PFRES_MAX) \
1353 pf_status.counters[(x)]++; \
1357 u_int64_t counters[PFRES_MAX];
1358 u_int64_t lcounters[LCNT_MAX]; /* limit counters */
1359 u_int64_t fcounters[FCNT_MAX];
1360 u_int64_t scounters[SCNT_MAX];
1361 u_int64_t pcounters[2][2][3];
1362 u_int64_t bcounters[2][2];
1363 u_int64_t stateid; /* atomic */
1365 u_int32_t states; /* atomic */
1366 u_int32_t src_nodes; /* atomic */
1370 char ifname[IFNAMSIZ];
1371 u_int8_t pf_chksum[PF_MD5_DIGEST_LENGTH];
1391 /* real-time service curve */
1392 u_int rtsc_m1; /* slope of the 1st segment in bps */
1393 u_int rtsc_d; /* the x-projection of m1 in msec */
1394 u_int rtsc_m2; /* slope of the 2nd segment in bps */
1395 /* link-sharing service curve */
1399 /* upper-limit service curve */
1407 * XXX this needs some work
1410 u_int nbuckets; /* hash buckets */
1411 u_int hogs_m1; /* hog detection bandwidth */
1414 /* link-sharing service curve */
1421 char ifname[IFNAMSIZ];
1423 void *altq_disc; /* discipline-specific state */
1424 TAILQ_ENTRY(pf_altq) entries;
1426 /* scheduler spec */
1427 u_int8_t scheduler; /* scheduler type */
1428 u_int16_t tbrsize; /* tokenbucket regulator size */
1429 u_int32_t ifbandwidth; /* interface bandwidth */
1432 char qname[PF_QNAME_SIZE]; /* queue name */
1433 char parent[PF_QNAME_SIZE]; /* parent name */
1434 u_int32_t parent_qid; /* parent queue id */
1435 u_int32_t bandwidth; /* queue bandwidth */
1436 u_int8_t priority; /* priority */
1437 u_int16_t qlimit; /* queue size limit */
1438 u_int16_t flags; /* misc flags */
1440 struct cbq_opts cbq_opts;
1441 struct priq_opts priq_opts;
1442 struct hfsc_opts hfsc_opts;
1443 struct fairq_opts fairq_opts;
1446 u_int32_t qid; /* return value */
1450 * DO NOT USE PF_TAG_GENERATED! Set PF_MBUF_TAGGED in fw_flags instead and
1451 * then clear pf.flags. The mbuf allocator does not automatically clear
1452 * the pf fields in the mbuf packet header.
1454 /*#define PF_TAG_GENERATED 0x01*/
1455 #define PF_TAG_FRAGCACHE 0x02
1456 #define PF_TAG_TRANSLATE_LOCALHOST 0x04
1457 #define PF_TAG_STATE_HASHED 0x08
1460 TAILQ_ENTRY(pf_tagname) entries;
1461 char name[PF_TAG_NAME_SIZE];
1468 struct in_addr ipv4;
1469 struct in6_addr ipv6;
1474 #define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */
1475 #define PFFRAG_FRAG_HIWAT 1000 /* Number of fragmented packets */
1476 #define PFFRAG_FRCENT_HIWAT 50000 /* Number of fragment cache entries */
1477 #define PFFRAG_FRCACHE_HIWAT 10000 /* Number of fragment descriptors */
1479 #define PFR_KTABLE_HIWAT 1000 /* Number of tables */
1480 #define PFR_KENTRY_HIWAT 200000 /* Number of table entries */
1481 #define PFR_KENTRY_HIWAT_SMALL 100000 /* Number of table entries (tiny hosts) */
1484 * ioctl parameter structures
1487 struct pfioc_pooladdr {
1495 char anchor[MAXPATHLEN];
1496 struct pf_pooladdr addr;
1502 u_int32_t pool_ticket;
1504 char anchor[MAXPATHLEN];
1505 char anchor_call[MAXPATHLEN];
1506 struct pf_rule rule;
1509 struct pfioc_natlook {
1510 struct pf_addr saddr;
1511 struct pf_addr daddr;
1512 struct pf_addr rsaddr;
1513 struct pf_addr rdaddr;
1523 struct pfioc_state {
1524 struct pfsync_state state;
1527 struct pfioc_src_node_kill {
1528 sa_family_t psnk_af;
1529 struct pf_rule_addr psnk_src;
1530 struct pf_rule_addr psnk_dst;
1534 struct pfioc_state_kill {
1535 struct pf_state_cmp psk_pfcmp;
1538 struct pf_rule_addr psk_src;
1539 struct pf_rule_addr psk_dst;
1540 char psk_ifname[IFNAMSIZ];
1541 char psk_label[PF_RULE_LABEL_SIZE];
1545 struct pfioc_states {
1549 struct pfsync_state *psu_states;
1551 #define ps_buf ps_u.psu_buf
1552 #define ps_states ps_u.psu_states
1555 struct pfioc_src_nodes {
1559 struct pf_src_node *psu_src_nodes;
1561 #define psn_buf psn_u.psu_buf
1562 #define psn_src_nodes psn_u.psu_src_nodes
1566 char ifname[IFNAMSIZ];
1574 struct pfioc_limit {
1583 struct pf_altq altq;
1586 struct pfioc_qstats {
1594 struct pfioc_anchor {
1596 char name[PF_ANCHOR_NAME_SIZE];
1599 struct pfioc_ruleset {
1601 char path[MAXPATHLEN];
1602 char name[PF_ANCHOR_NAME_SIZE];
1605 #define PF_RULESET_ALTQ (PF_RULESET_MAX)
1606 #define PF_RULESET_TABLE (PF_RULESET_MAX+1)
1607 struct pfioc_trans {
1608 int size; /* number of elements */
1609 int esize; /* size of each element in bytes */
1610 struct pfioc_trans_e {
1612 char anchor[MAXPATHLEN];
1617 #define PFR_FLAG_ATOMIC 0x00000001
1618 #define PFR_FLAG_DUMMY 0x00000002
1619 #define PFR_FLAG_FEEDBACK 0x00000004
1620 #define PFR_FLAG_CLSTATS 0x00000008
1621 #define PFR_FLAG_ADDRSTOO 0x00000010
1622 #define PFR_FLAG_REPLACE 0x00000020
1623 #define PFR_FLAG_ALLRSETS 0x00000040
1624 #define PFR_FLAG_ALLMASK 0x0000007F
1626 #define PFR_FLAG_USERIOCTL 0x10000000
1629 struct pfioc_table {
1630 struct pfr_table pfrio_table;
1639 u_int32_t pfrio_ticket;
1641 #define pfrio_exists pfrio_nadd
1642 #define pfrio_nzero pfrio_nadd
1643 #define pfrio_nmatch pfrio_nadd
1644 #define pfrio_naddr pfrio_size2
1645 #define pfrio_setflag pfrio_size2
1646 #define pfrio_clrflag pfrio_nadd
1648 struct pfioc_iface {
1649 char pfiio_name[IFNAMSIZ];
1662 #define DIOCSTART _IO ('D', 1)
1663 #define DIOCSTOP _IO ('D', 2)
1664 #define DIOCBEGINRULES _IOWR('D', 3, struct pfioc_rule)
1665 #define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule)
1666 #define DIOCCOMMITRULES _IOWR('D', 5, struct pfioc_rule)
1667 #define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule)
1668 #define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule)
1669 /* XXX cut 8 - 17 */
1670 #define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill)
1671 #define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state)
1672 #define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if)
1673 #define DIOCGETSTATUS _IOWR('D', 21, struct pf_status)
1674 #define DIOCCLRSTATUS _IO ('D', 22)
1675 #define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook)
1676 #define DIOCSETDEBUG _IOWR('D', 24, u_int32_t)
1677 #define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states)
1678 #define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule)
1679 /* XXX cut 26 - 28 */
1680 #define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm)
1681 #define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm)
1682 #define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state)
1683 #define DIOCCLRRULECTRS _IO ('D', 38)
1684 #define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit)
1685 #define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit)
1686 #define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill)
1687 #define DIOCSTARTALTQ _IO ('D', 42)
1688 #define DIOCSTOPALTQ _IO ('D', 43)
1689 #define DIOCBEGINALTQS _IOWR('D', 44, u_int32_t)
1690 #define DIOCADDALTQ _IOWR('D', 45, struct pfioc_altq)
1691 #define DIOCCOMMITALTQS _IOWR('D', 46, u_int32_t)
1692 #define DIOCGETALTQS _IOWR('D', 47, struct pfioc_altq)
1693 #define DIOCGETALTQ _IOWR('D', 48, struct pfioc_altq)
1694 #define DIOCCHANGEALTQ _IOWR('D', 49, struct pfioc_altq)
1695 #define DIOCGETQSTATS _IOWR('D', 50, struct pfioc_qstats)
1696 #define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr)
1697 #define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr)
1698 #define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr)
1699 #define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr)
1700 #define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr)
1701 /* XXX cut 55 - 57 */
1702 #define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset)
1703 #define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset)
1704 #define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table)
1705 #define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table)
1706 #define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table)
1707 #define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table)
1708 #define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table)
1709 #define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table)
1710 #define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table)
1711 #define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table)
1712 #define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table)
1713 #define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table)
1714 #define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table)
1715 #define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table)
1716 #define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table)
1717 #define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table)
1718 #define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table)
1719 #define DIOCRINABEGIN _IOWR('D', 75, struct pfioc_table)
1720 #define DIOCRINACOMMIT _IOWR('D', 76, struct pfioc_table)
1721 #define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table)
1722 #define DIOCOSFPFLUSH _IO('D', 78)
1723 #define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl)
1724 #define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl)
1725 #define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans)
1726 #define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans)
1727 #define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans)
1728 #define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes)
1729 #define DIOCCLRSRCNODES _IO('D', 85)
1730 #define DIOCSETHOSTID _IOWR('D', 86, u_int32_t)
1731 #define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface)
1732 #define DIOCICLRISTATS _IOWR('D', 88, struct pfioc_iface)
1733 #define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface)
1734 #define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface)
1735 #define DIOCKILLSRCNODES _IOWR('D', 91, struct pfioc_src_node_kill)
1737 char ifname[IFNAMSIZ];
1740 #define DIOCGIFSPEED _IOWR('D', 89, struct pf_ifspeed)
1743 RB_HEAD(pf_src_tree, pf_src_node);
1744 RB_PROTOTYPE(pf_src_tree, pf_src_node, entry, pf_src_compare);
1745 extern struct pf_src_tree tree_src_tracking[MAXCPU];
1747 RB_HEAD(pf_state_tree_id, pf_state);
1748 RB_PROTOTYPE(pf_state_tree_id, pf_state,
1749 entry_id, pf_state_compare_id);
1750 extern struct pf_state_tree_id tree_id[MAXCPU];
1751 extern struct pf_state_queue state_list[MAXCPU];
1753 TAILQ_HEAD(pf_poolqueue, pf_pool);
1754 extern struct pf_poolqueue pf_pools[2];
1755 TAILQ_HEAD(pf_altqqueue, pf_altq);
1756 extern struct pf_altqqueue pf_altqs[2];
1757 extern struct pf_palist pf_pabuf;
1759 extern u_int32_t ticket_altqs_active;
1760 extern u_int32_t ticket_altqs_inactive;
1761 extern int altqs_inactive_open;
1762 extern u_int32_t ticket_pabuf;
1763 extern struct pf_altqqueue *pf_altqs_active;
1764 extern struct pf_altqqueue *pf_altqs_inactive;
1765 extern struct pf_poolqueue *pf_pools_active;
1766 extern struct pf_poolqueue *pf_pools_inactive;
1767 extern int pf_tbladdr_setup(struct pf_ruleset *,
1768 struct pf_addr_wrap *);
1769 extern void pf_tbladdr_remove(struct pf_addr_wrap *);
1770 extern void pf_tbladdr_copyout(struct pf_addr_wrap *);
1771 extern void pf_calc_skip_steps(struct pf_rulequeue *);
1772 extern struct malloc_type *pf_src_tree_pl, *pf_rule_pl;
1773 extern struct malloc_type *pf_state_pl, *pf_state_key_pl, *pf_state_item_pl,
1774 *pf_altq_pl, *pf_pooladdr_pl;
1775 extern struct malloc_type *pfr_ktable_pl, *pfr_kentry_pl;
1776 extern struct malloc_type *pfr_kentry_pl2;
1777 extern struct malloc_type *pf_cache_pl, *pf_cent_pl;
1778 extern struct malloc_type *pf_state_scrub_pl;
1779 extern struct malloc_type *pfi_addr_pl;
1780 extern void pf_purge_thread(void *);
1781 extern int pf_purge_expired_src_nodes(int);
1782 extern int pf_purge_expired_states(u_int32_t, int);
1783 extern void pf_unlink_state(struct pf_state *);
1784 extern void pf_free_state(struct pf_state *);
1785 extern int pf_state_insert(struct pfi_kif *,
1786 struct pf_state_key *,
1787 struct pf_state_key *,
1789 extern int pf_insert_src_node(struct pf_src_node **,
1790 struct pf_rule *, struct pf_addr *,
1792 void pf_src_tree_remove_state(struct pf_state *);
1793 u_int32_t pf_state_hash(struct pf_state_key *sk);
1794 extern struct pf_state *pf_find_state_byid(struct pf_state_cmp *);
1795 extern struct pf_state *pf_find_state_all(struct pf_state_key_cmp *,
1797 extern void pf_print_state(struct pf_state *);
1798 extern void pf_print_flags(u_int8_t);
1799 extern u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t,
1802 extern struct ifnet *sync_ifp;
1803 extern struct pf_rule pf_default_rule;
1804 extern void pf_addrcpy(struct pf_addr *, struct pf_addr *,
1806 void pf_rm_rule(struct pf_rulequeue *,
1808 struct pf_divert *pf_find_divert(struct mbuf *);
1811 int pf_test(int, struct ifnet *, struct mbuf **, struct ether_header *, struct inpcb *);
1815 int pf_test6(int, struct ifnet *, struct mbuf **, struct ether_header *, struct inpcb *);
1816 void pf_poolmask(struct pf_addr *, struct pf_addr*,
1817 struct pf_addr *, struct pf_addr *, u_int8_t);
1818 void pf_addr_inc(struct pf_addr *, sa_family_t);
1821 void *pf_pull_hdr(struct mbuf *, int, void *, int, u_short *, u_short *,
1823 void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t);
1824 int pflog_packet(struct pfi_kif *, struct mbuf *, sa_family_t, u_int8_t,
1825 u_int8_t, struct pf_rule *, struct pf_rule *, struct pf_ruleset *,
1827 int pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *,
1828 struct pf_addr *, sa_family_t);
1829 int pf_match_addr_range(struct pf_addr *, struct pf_addr *,
1830 struct pf_addr *, sa_family_t);
1831 int pf_match(u_int8_t, u_int32_t, u_int32_t, u_int32_t);
1832 int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t);
1833 int pf_match_uid(u_int8_t, uid_t, uid_t, uid_t);
1834 int pf_match_gid(u_int8_t, gid_t, gid_t, gid_t);
1836 void pf_normalize_init(void);
1837 int pf_normalize_ip(struct mbuf **, int, struct pfi_kif *, u_short *,
1839 int pf_normalize_ip6(struct mbuf **, int, struct pfi_kif *, u_short *,
1841 int pf_normalize_tcp(int, struct pfi_kif *, struct mbuf *, int, int, void *,
1843 void pf_normalize_tcp_cleanup(struct pf_state *);
1844 int pf_normalize_tcp_init(struct mbuf *, int, struct pf_pdesc *,
1845 struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *);
1846 int pf_normalize_tcp_stateful(struct mbuf *, int, struct pf_pdesc *,
1847 u_short *, struct tcphdr *, struct pf_state *,
1848 struct pf_state_peer *, struct pf_state_peer *, int *);
1850 pf_state_expires(const struct pf_state *);
1851 void pf_purge_expired_fragments(void);
1852 int pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kif *);
1853 int pf_rtlabel_match(struct pf_addr *, sa_family_t, struct pf_addr_wrap *);
1854 int pf_socket_lookup(int, struct pf_pdesc *);
1855 struct pf_state_key *pf_alloc_state_key(int);
1856 int pf_state_key_attach(struct pf_state_key *, struct pf_state *, int);
1857 void pfr_initialize(void);
1858 int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t);
1859 void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t,
1860 u_int64_t, int, int, int);
1861 int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *,
1862 struct pf_addr **, struct pf_addr **, sa_family_t);
1863 void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *);
1865 pfr_attach_table(struct pf_ruleset *, char *);
1866 void pfr_detach_table(struct pfr_ktable *);
1867 int pfr_clr_tables(struct pfr_table *, int *, int);
1868 int pfr_add_tables(struct pfr_table *, int, int *, int);
1869 int pfr_del_tables(struct pfr_table *, int, int *, int);
1870 int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int);
1871 int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int);
1872 int pfr_clr_tstats(struct pfr_table *, int, int *, int);
1873 int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int);
1874 int pfr_clr_addrs(struct pfr_table *, int *, int);
1875 int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *, long);
1876 int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
1878 int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
1880 int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
1881 int *, int *, int *, int, u_int32_t);
1882 int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int);
1883 int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int);
1884 int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *,
1886 int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
1888 int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int);
1889 int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int);
1890 int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int);
1891 int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *,
1892 int *, u_int32_t, int);
1894 extern struct pfi_kif *pfi_all;
1896 void pfi_initialize(void);
1897 struct pfi_kif *pfi_kif_get(const char *);
1898 void pfi_cleanup(void);
1899 void pfi_attach_clone(struct if_clone *);
1900 void pfi_kif_ref(struct pfi_kif *, enum pfi_kif_refs);
1901 void pfi_kif_unref(struct pfi_kif *, enum pfi_kif_refs);
1902 struct pfi_kif *pfi_kif_find(const char *);
1903 int pfi_kif_match(struct pfi_kif *, struct pfi_kif *);
1904 void pfi_attach_ifnet(struct ifnet *);
1905 void pfi_detach_ifnet(struct ifnet *);
1906 struct pfi_kif *pfi_lookup_create(const char *);
1907 struct pfi_kif *pfi_lookup_if(const char *);
1908 void pfi_attach_ifgroup(struct ifg_group *);
1909 void pfi_detach_ifgroup(struct ifg_group *);
1910 void pfi_group_change(const char *);
1911 int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *,
1913 int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t);
1914 void pfi_dynaddr_remove(struct pf_addr_wrap *);
1915 void pfi_dynaddr_copyout(struct pf_addr_wrap *);
1916 void pfi_update_status(const char *, struct pf_status *);
1917 int pfi_get_ifaces(const char *, struct pfi_kif *, int *);
1918 int pfi_set_flags(const char *, int);
1919 int pfi_clear_flags(const char *, int);
1921 int pf_match_tag(struct mbuf *, struct pf_rule *, int *);
1922 u_int16_t pf_tagname2tag(char *);
1923 void pf_tag2tagname(u_int16_t, char *);
1924 void pf_tag_ref(u_int16_t);
1925 void pf_tag_unref(u_int16_t);
1926 int pf_tag_packet(struct mbuf *, int, int);
1927 u_int32_t pf_qname2qid(char *);
1928 void pf_qid2qname(u_int32_t, char *);
1929 void pf_qid_unref(u_int32_t);
1931 extern struct pf_status pf_status;
1932 extern struct malloc_type *pf_frent_pl, *pf_frag_pl;
1933 extern struct lock pf_consistency_lock;
1934 extern struct lock pf_global_statetbl_lock;
1936 struct pf_pool_limit {
1940 extern struct pf_pool_limit pf_pool_limits[PF_LIMIT_MAX];
1943 LIST_ENTRY(pf_frent) fr_next;
1949 LIST_ENTRY(pf_frcache) fr_next;
1954 struct pf_fragment {
1955 RB_ENTRY(pf_fragment) fr_entry;
1956 TAILQ_ENTRY(pf_fragment) frag_next;
1957 struct in_addr fr_src;
1958 struct in_addr fr_dst;
1959 u_int8_t fr_p; /* protocol of this fragment */
1960 u_int8_t fr_flags; /* status flags */
1961 u_int16_t fr_id; /* fragment id for reassemble */
1962 u_int16_t fr_max; /* fragment data max */
1963 u_int32_t fr_timeout;
1964 #define fr_queue fr_u.fru_queue
1965 #define fr_cache fr_u.fru_cache
1967 LIST_HEAD(pf_fragq, pf_frent) fru_queue; /* buffering */
1968 LIST_HEAD(pf_cacheq, pf_frcache) fru_cache; /* non-buf */
1972 #endif /* _KERNEL */
1974 extern struct radix_node_head *pf_maskhead;
1975 extern struct pf_anchor_global pf_anchors;
1976 extern struct pf_anchor pf_main_anchor;
1977 #define pf_main_ruleset pf_main_anchor.ruleset
1979 /* these ruleset functions can be linked into userland programs (pfctl) */
1980 int pf_get_ruleset_number(u_int8_t);
1981 void pf_init_ruleset(struct pf_ruleset *);
1982 int pf_anchor_setup(struct pf_rule *,
1983 const struct pf_ruleset *, const char *);
1984 int pf_anchor_copyout(const struct pf_ruleset *,
1985 const struct pf_rule *, struct pfioc_rule *);
1986 void pf_anchor_remove(struct pf_rule *);
1987 void pf_remove_if_empty_ruleset(struct pf_ruleset *);
1988 struct pf_anchor *pf_find_anchor(const char *);
1989 struct pf_ruleset *pf_find_ruleset(const char *);
1990 struct pf_ruleset *pf_find_or_create_ruleset(const char *);
1991 void pf_rs_initialize(void);
1993 /* The fingerprint functions can be linked into userland programs (tcpdump) */
1994 int pf_osfp_add(struct pf_osfp_ioctl *);
1996 struct pf_osfp_enlist *
1997 pf_osfp_fingerprint(struct pf_pdesc *, struct mbuf *, int,
1998 const struct tcphdr *);
1999 #endif /* _KERNEL */
2000 struct pf_osfp_enlist *
2001 pf_osfp_fingerprint_hdr(const struct ip *, const struct ip6_hdr *,
2002 const struct tcphdr *);
2003 void pf_osfp_flush(void);
2004 int pf_osfp_get(struct pf_osfp_ioctl *);
2005 void pf_osfp_initialize(void);
2006 int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t);
2007 struct pf_os_fingerprint *
2008 pf_osfp_validate(void);
2011 #endif /* _NET_PFVAR_H_ */