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 IFG_ALL "all" /* group contains all interfaces */
74 #define BPF_DIRECTION_OUT (1<<1)
77 #define ALTQ_IS_ENABLED(ifq) ((ifq)->altq_flags & ALTQF_ENABLED)
80 #define PF_MD5_DIGEST_LENGTH 16
81 #ifdef MD5_DIGEST_LENGTH
82 #if PF_MD5_DIGEST_LENGTH != MD5_DIGEST_LENGTH
87 enum { PF_INOUT, PF_IN, PF_OUT };
88 enum { PF_PASS, PF_DROP, PF_SCRUB, PF_NOSCRUB, PF_NAT, PF_NONAT,
89 PF_BINAT, PF_NOBINAT, PF_RDR, PF_NORDR, PF_SYNPROXY_DROP };
90 enum { PF_RULESET_SCRUB, PF_RULESET_FILTER, PF_RULESET_NAT,
91 PF_RULESET_BINAT, PF_RULESET_RDR, PF_RULESET_MAX };
92 enum { PF_OP_NONE, PF_OP_IRG, PF_OP_EQ, PF_OP_NE, PF_OP_LT,
93 PF_OP_LE, PF_OP_GT, PF_OP_GE, PF_OP_XRG, PF_OP_RRG };
94 enum { PF_DEBUG_NONE, PF_DEBUG_URGENT, PF_DEBUG_MISC, PF_DEBUG_NOISY };
95 enum { PF_CHANGE_NONE, PF_CHANGE_ADD_HEAD, PF_CHANGE_ADD_TAIL,
96 PF_CHANGE_ADD_BEFORE, PF_CHANGE_ADD_AFTER,
97 PF_CHANGE_REMOVE, PF_CHANGE_GET_TICKET };
98 enum { PF_GET_NONE, PF_GET_CLR_CNTR };
99 enum { PF_SK_WIRE, PF_SK_STACK, PF_SK_BOTH };
102 * Note about PFTM_*: real indices into pf_rule.timeout[] come before
103 * PFTM_MAX, special cases afterwards. See pf_state_expires().
105 enum { PFTM_TCP_FIRST_PACKET, PFTM_TCP_OPENING, PFTM_TCP_ESTABLISHED,
106 PFTM_TCP_CLOSING, PFTM_TCP_FIN_WAIT, PFTM_TCP_CLOSED,
107 PFTM_UDP_FIRST_PACKET, PFTM_UDP_SINGLE, PFTM_UDP_MULTIPLE,
108 PFTM_ICMP_FIRST_PACKET, PFTM_ICMP_ERROR_REPLY,
109 PFTM_OTHER_FIRST_PACKET, PFTM_OTHER_SINGLE,
110 PFTM_OTHER_MULTIPLE, PFTM_FRAG, PFTM_INTERVAL,
111 PFTM_ADAPTIVE_START, PFTM_ADAPTIVE_END, PFTM_SRC_NODE,
112 PFTM_TS_DIFF, PFTM_MAX, PFTM_PURGE, PFTM_UNLINKED,
115 /* PFTM default values */
116 #define PFTM_TCP_FIRST_PACKET_VAL 120 /* First TCP packet */
117 #define PFTM_TCP_OPENING_VAL 30 /* No response yet */
118 #define PFTM_TCP_ESTABLISHED_VAL 24*60*60/* Established */
119 #define PFTM_TCP_CLOSING_VAL 15 * 60 /* Half closed */
120 #define PFTM_TCP_FIN_WAIT_VAL 45 /* Got both FINs */
121 #define PFTM_TCP_CLOSED_VAL 90 /* Got a RST */
122 #define PFTM_UDP_FIRST_PACKET_VAL 60 /* First UDP packet */
123 #define PFTM_UDP_SINGLE_VAL 30 /* Unidirectional */
124 #define PFTM_UDP_MULTIPLE_VAL 60 /* Bidirectional */
125 #define PFTM_ICMP_FIRST_PACKET_VAL 20 /* First ICMP packet */
126 #define PFTM_ICMP_ERROR_REPLY_VAL 10 /* Got error response */
127 #define PFTM_OTHER_FIRST_PACKET_VAL 60 /* First packet */
128 #define PFTM_OTHER_SINGLE_VAL 30 /* Unidirectional */
129 #define PFTM_OTHER_MULTIPLE_VAL 60 /* Bidirectional */
130 #define PFTM_FRAG_VAL 30 /* Fragment expire */
131 #define PFTM_INTERVAL_VAL 10 /* Expire interval */
132 #define PFTM_SRC_NODE_VAL 0 /* Source tracking */
133 #define PFTM_TS_DIFF_VAL 30 /* Allowed TS diff */
135 enum { PF_NOPFROUTE, PF_FASTROUTE, PF_ROUTETO, PF_DUPTO, PF_REPLYTO };
136 enum { PF_LIMIT_STATES, PF_LIMIT_SRC_NODES, PF_LIMIT_FRAGS,
137 PF_LIMIT_TABLES, PF_LIMIT_TABLE_ENTRIES, PF_LIMIT_MAX };
138 #define PF_POOL_IDMASK 0x0f
139 enum { PF_POOL_NONE, PF_POOL_BITMASK, PF_POOL_RANDOM,
140 PF_POOL_SRCHASH, PF_POOL_ROUNDROBIN };
141 enum { PF_ADDR_ADDRMASK, PF_ADDR_NOROUTE, PF_ADDR_DYNIFTL,
142 PF_ADDR_TABLE, PF_ADDR_RTLABEL, PF_ADDR_URPFFAILED,
144 #define PF_POOL_TYPEMASK 0x0f
145 #define PF_POOL_STICKYADDR 0x20
146 #define PF_WSCALE_FLAG 0x80
147 #define PF_WSCALE_MASK 0x0f
150 #define PF_LOG_ALL 0x02
151 #define PF_LOG_SOCKET_LOOKUP 0x04
153 #define PR_WAITOK 0x0001 /* M_WAITOK */
154 #define PR_NOWAIT 0x0002 /* M_NOWAIT */
155 #define PR_LIMITFAIL 0x0004 /* M_CANFAIL */
156 #define PR_ZERO 0x0008 /* M_ZERO */
166 } pfa; /* 128-bit address */
169 #define addr8 pfa.addr8
170 #define addr16 pfa.addr16
171 #define addr32 pfa.addr32
174 #define PF_TABLE_NAME_SIZE 32
176 #define PFI_AFLAG_NETWORK 0x01
177 #define PFI_AFLAG_BROADCAST 0x02
178 #define PFI_AFLAG_PEER 0x04
179 #define PFI_AFLAG_MODEMASK 0x07
180 #define PFI_AFLAG_NOALIAS 0x08
182 struct pf_addr_wrap {
188 char ifname[IFNAMSIZ];
189 char tblname[PF_TABLE_NAME_SIZE];
190 char rtlabelname[RTLABEL_LEN];
194 struct pfi_dynaddr *dyn;
195 struct pfr_ktable *tbl;
199 u_int8_t type; /* PF_ADDR_* */
200 u_int8_t iflags; /* PFI_AFLAG_* */
206 TAILQ_ENTRY(pfi_dynaddr) entry;
207 struct pf_addr pfid_addr4;
208 struct pf_addr pfid_mask4;
209 struct pf_addr pfid_addr6;
210 struct pf_addr pfid_mask6;
211 struct pfr_ktable *pfid_kt;
212 struct pfi_kif *pfid_kif;
213 void *pfid_hook_cookie;
214 int pfid_net; /* mask or 128 */
215 int pfid_acnt4; /* address count IPv4 */
216 int pfid_acnt6; /* address count IPv6 */
217 sa_family_t pfid_af; /* rule af */
218 u_int8_t pfid_iflags; /* PFI_AFLAG_* */
222 * Address manipulation macros
225 #define NTOHS(x) (x) = ntohs((__uint16_t)(x))
226 #define HTONS(x) (x) = htons((__uint16_t)(x))
231 #define PFLOG_MODVER 44
232 #define PFSYNC_MODVER 44
234 #define PFLOG_MINVER 44
235 #define PFLOG_PREFVER PFLOG_MODVER
236 #define PFLOG_MAXVER 44
237 #define PFSYNC_MINVER 44
238 #define PFSYNC_PREFVER PFSYNC_MODVER
239 #define PFSYNC_MAXVER 44
241 /* prototyped for pf_subr.c */
243 TAILQ_ENTRY(hook_desc) hd_list;
244 void (*hd_fn)(void *);
247 TAILQ_HEAD(hook_desc_head, hook_desc);
249 void *hook_establish(struct hook_desc_head *, int, void (*)(void *), void *);
250 void hook_disestablish(struct hook_desc_head *, void *);
251 void dohooks(struct hook_desc_head *, int);
253 #define HOOK_REMOVE 0x01
254 #define HOOK_FREE 0x02
264 #define PF_INET6_ONLY
270 #define PF_INET_INET6
276 #define PF_INET_INET6
280 /* Both IPv4 and IPv6 */
283 #define PF_AEQ(a, b, c) \
284 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \
285 ((a)->addr32[3] == (b)->addr32[3] && \
286 (a)->addr32[2] == (b)->addr32[2] && \
287 (a)->addr32[1] == (b)->addr32[1] && \
288 (a)->addr32[0] == (b)->addr32[0])) \
290 #define PF_ANEQ(a, b, c) \
291 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \
292 ((a)->addr32[3] != (b)->addr32[3] || \
293 (a)->addr32[2] != (b)->addr32[2] || \
294 (a)->addr32[1] != (b)->addr32[1] || \
295 (a)->addr32[0] != (b)->addr32[0])) \
297 #define PF_AZERO(a, c) \
298 ((c == AF_INET && !(a)->addr32[0]) || \
299 (!(a)->addr32[0] && !(a)->addr32[1] && \
300 !(a)->addr32[2] && !(a)->addr32[3] )) \
302 #define PF_MATCHA(n, a, m, b, f) \
303 pf_match_addr(n, a, m, b, f)
305 #define PF_ACPY(a, b, f) \
308 #define PF_AINC(a, f) \
311 #define PF_POOLMASK(a, b, c, d, f) \
312 pf_poolmask(a, b, c, d, f)
320 #define PF_AEQ(a, b, c) \
321 ((a)->addr32[3] == (b)->addr32[3] && \
322 (a)->addr32[2] == (b)->addr32[2] && \
323 (a)->addr32[1] == (b)->addr32[1] && \
324 (a)->addr32[0] == (b)->addr32[0]) \
326 #define PF_ANEQ(a, b, c) \
327 ((a)->addr32[3] != (b)->addr32[3] || \
328 (a)->addr32[2] != (b)->addr32[2] || \
329 (a)->addr32[1] != (b)->addr32[1] || \
330 (a)->addr32[0] != (b)->addr32[0]) \
332 #define PF_AZERO(a, c) \
333 (!(a)->addr32[0] && \
338 #define PF_MATCHA(n, a, m, b, f) \
339 pf_match_addr(n, a, m, b, f)
341 #define PF_ACPY(a, b, f) \
344 #define PF_AINC(a, f) \
347 #define PF_POOLMASK(a, b, c, d, f) \
348 pf_poolmask(a, b, c, d, f)
355 #define PF_AEQ(a, b, c) \
356 ((a)->addr32[0] == (b)->addr32[0])
358 #define PF_ANEQ(a, b, c) \
359 ((a)->addr32[0] != (b)->addr32[0])
361 #define PF_AZERO(a, c) \
364 #define PF_MATCHA(n, a, m, b, f) \
365 pf_match_addr(n, a, m, b, f)
367 #define PF_ACPY(a, b, f) \
368 (a)->v4.s_addr = (b)->v4.s_addr
370 #define PF_AINC(a, f) \
372 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \
375 #define PF_POOLMASK(a, b, c, d, f) \
377 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \
378 (((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \
381 #endif /* PF_INET_ONLY */
382 #endif /* PF_INET6_ONLY */
383 #endif /* PF_INET_INET6 */
385 #define PF_MISMATCHAW(aw, x, af, neg, ifp) \
387 (((aw)->type == PF_ADDR_NOROUTE && \
388 pf_routable((x), (af), NULL)) || \
389 (((aw)->type == PF_ADDR_URPFFAILED && (ifp) != NULL && \
390 pf_routable((x), (af), (ifp))) || \
391 ((aw)->type == PF_ADDR_RTLABEL && \
392 !pf_rtlabel_match((x), (af), (aw))) || \
393 ((aw)->type == PF_ADDR_TABLE && \
394 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \
395 ((aw)->type == PF_ADDR_DYNIFTL && \
396 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \
397 ((aw)->type == PF_ADDR_RANGE && \
398 !pf_match_addr_range(&(aw)->v.a.addr, \
399 &(aw)->v.a.mask, (x), (af))) || \
400 ((aw)->type == PF_ADDR_ADDRMASK && \
401 !PF_AZERO(&(aw)->v.a.mask, (af)) && \
402 !PF_MATCHA(0, &(aw)->v.a.addr, \
403 &(aw)->v.a.mask, (x), (af))))) != \
417 struct pf_rule_addr {
418 struct pf_addr_wrap addr;
425 struct pf_addr_wrap addr;
426 TAILQ_ENTRY(pf_pooladdr) entries;
427 char ifname[IFNAMSIZ];
431 TAILQ_HEAD(pf_palist, pf_pooladdr);
433 struct pf_poolhashkey {
438 } pfk; /* 128-bit hash key */
439 #define key8 pfk.key8
440 #define key16 pfk.key16
441 #define key32 pfk.key32
445 struct pf_palist list;
446 struct pf_pooladdr *cur;
447 struct pf_poolhashkey key;
448 struct pf_addr counter;
450 u_int16_t proxy_port[2];
456 /* A packed Operating System description for fingerprinting */
457 typedef u_int32_t pf_osfp_t;
458 #define PF_OSFP_ANY ((pf_osfp_t)0)
459 #define PF_OSFP_UNKNOWN ((pf_osfp_t)-1)
460 #define PF_OSFP_NOMATCH ((pf_osfp_t)-2)
462 struct pf_osfp_entry {
463 SLIST_ENTRY(pf_osfp_entry) fp_entry;
466 #define PF_OSFP_EXPANDED 0x001 /* expanded entry */
467 #define PF_OSFP_GENERIC 0x002 /* generic signature */
468 #define PF_OSFP_NODETAIL 0x004 /* no p0f details */
469 #define PF_OSFP_LEN 32
470 char fp_class_nm[PF_OSFP_LEN];
471 char fp_version_nm[PF_OSFP_LEN];
472 char fp_subtype_nm[PF_OSFP_LEN];
474 #define PF_OSFP_ENTRY_EQ(a, b) \
475 ((a)->fp_os == (b)->fp_os && \
476 memcmp((a)->fp_class_nm, (b)->fp_class_nm, PF_OSFP_LEN) == 0 && \
477 memcmp((a)->fp_version_nm, (b)->fp_version_nm, PF_OSFP_LEN) == 0 && \
478 memcmp((a)->fp_subtype_nm, (b)->fp_subtype_nm, PF_OSFP_LEN) == 0)
480 /* handle pf_osfp_t packing */
481 #define _FP_RESERVED_BIT 1 /* For the special negative #defines */
482 #define _FP_UNUSED_BITS 1
483 #define _FP_CLASS_BITS 10 /* OS Class (Windows, Linux) */
484 #define _FP_VERSION_BITS 10 /* OS version (95, 98, NT, 2.4.54, 3.2) */
485 #define _FP_SUBTYPE_BITS 10 /* patch level (NT SP4, SP3, ECN patch) */
486 #define PF_OSFP_UNPACK(osfp, class, version, subtype) do { \
487 (class) = ((osfp) >> (_FP_VERSION_BITS+_FP_SUBTYPE_BITS)) & \
488 ((1 << _FP_CLASS_BITS) - 1); \
489 (version) = ((osfp) >> _FP_SUBTYPE_BITS) & \
490 ((1 << _FP_VERSION_BITS) - 1);\
491 (subtype) = (osfp) & ((1 << _FP_SUBTYPE_BITS) - 1); \
493 #define PF_OSFP_PACK(osfp, class, version, subtype) do { \
494 (osfp) = ((class) & ((1 << _FP_CLASS_BITS) - 1)) << (_FP_VERSION_BITS \
495 + _FP_SUBTYPE_BITS); \
496 (osfp) |= ((version) & ((1 << _FP_VERSION_BITS) - 1)) << \
498 (osfp) |= (subtype) & ((1 << _FP_SUBTYPE_BITS) - 1); \
501 /* the fingerprint of an OSes TCP SYN packet */
502 typedef u_int64_t pf_tcpopts_t;
503 struct pf_os_fingerprint {
504 SLIST_HEAD(pf_osfp_enlist, pf_osfp_entry) fp_oses; /* list of matches */
505 pf_tcpopts_t fp_tcpopts; /* packed TCP options */
506 u_int16_t fp_wsize; /* TCP window size */
507 u_int16_t fp_psize; /* ip->ip_len */
508 u_int16_t fp_mss; /* TCP MSS */
510 #define PF_OSFP_WSIZE_MOD 0x0001 /* Window modulus */
511 #define PF_OSFP_WSIZE_DC 0x0002 /* Window don't care */
512 #define PF_OSFP_WSIZE_MSS 0x0004 /* Window multiple of MSS */
513 #define PF_OSFP_WSIZE_MTU 0x0008 /* Window multiple of MTU */
514 #define PF_OSFP_PSIZE_MOD 0x0010 /* packet size modulus */
515 #define PF_OSFP_PSIZE_DC 0x0020 /* packet size don't care */
516 #define PF_OSFP_WSCALE 0x0040 /* TCP window scaling */
517 #define PF_OSFP_WSCALE_MOD 0x0080 /* TCP window scale modulus */
518 #define PF_OSFP_WSCALE_DC 0x0100 /* TCP window scale dont-care */
519 #define PF_OSFP_MSS 0x0200 /* TCP MSS */
520 #define PF_OSFP_MSS_MOD 0x0400 /* TCP MSS modulus */
521 #define PF_OSFP_MSS_DC 0x0800 /* TCP MSS dont-care */
522 #define PF_OSFP_DF 0x1000 /* IPv4 don't fragment bit */
523 #define PF_OSFP_TS0 0x2000 /* Zero timestamp */
524 #define PF_OSFP_INET6 0x4000 /* IPv6 */
525 u_int8_t fp_optcnt; /* TCP option count */
526 u_int8_t fp_wscale; /* TCP window scaling */
527 u_int8_t fp_ttl; /* IPv4 TTL */
528 #define PF_OSFP_MAXTTL_OFFSET 40
529 /* TCP options packing */
530 #define PF_OSFP_TCPOPT_NOP 0x0 /* TCP NOP option */
531 #define PF_OSFP_TCPOPT_WSCALE 0x1 /* TCP window scaling option */
532 #define PF_OSFP_TCPOPT_MSS 0x2 /* TCP max segment size opt */
533 #define PF_OSFP_TCPOPT_SACK 0x3 /* TCP SACK OK option */
534 #define PF_OSFP_TCPOPT_TS 0x4 /* TCP timestamp option */
535 #define PF_OSFP_TCPOPT_BITS 3 /* bits used by each option */
536 #define PF_OSFP_MAX_OPTS \
537 (sizeof(((struct pf_os_fingerprint *)0)->fp_tcpopts) * 8) \
538 / PF_OSFP_TCPOPT_BITS
540 SLIST_ENTRY(pf_os_fingerprint) fp_next;
543 struct pf_osfp_ioctl {
544 struct pf_osfp_entry fp_os;
545 pf_tcpopts_t fp_tcpopts; /* packed TCP options */
546 u_int16_t fp_wsize; /* TCP window size */
547 u_int16_t fp_psize; /* ip->ip_len */
548 u_int16_t fp_mss; /* TCP MSS */
550 u_int8_t fp_optcnt; /* TCP option count */
551 u_int8_t fp_wscale; /* TCP window scaling */
552 u_int8_t fp_ttl; /* IPv4 TTL */
554 int fp_getnum; /* DIOCOSFPGET number */
563 #define PF_ANCHOR_NAME_SIZE 64
566 struct pf_rule_addr src;
567 struct pf_rule_addr dst;
568 #define PF_SKIP_IFP 0
569 #define PF_SKIP_DIR 1
571 #define PF_SKIP_PROTO 3
572 #define PF_SKIP_SRC_ADDR 4
573 #define PF_SKIP_SRC_PORT 5
574 #define PF_SKIP_DST_ADDR 6
575 #define PF_SKIP_DST_PORT 7
576 #define PF_SKIP_COUNT 8
577 union pf_rule_ptr skip[PF_SKIP_COUNT];
578 #define PF_RULE_LABEL_SIZE 64
579 char label[PF_RULE_LABEL_SIZE];
580 #define PF_QNAME_SIZE 64
581 char ifname[IFNAMSIZ];
582 char qname[PF_QNAME_SIZE];
583 char pqname[PF_QNAME_SIZE];
584 #define PF_TAG_NAME_SIZE 64
585 char tagname[PF_TAG_NAME_SIZE];
586 char match_tagname[PF_TAG_NAME_SIZE];
588 char overload_tblname[PF_TABLE_NAME_SIZE];
590 TAILQ_ENTRY(pf_rule) entries;
591 struct pf_pool rpool;
593 u_int64_t evaluations;
594 u_int64_t packets[2];
598 struct pf_anchor *anchor;
599 struct pfr_ktable *overload_tbl;
601 pf_osfp_t os_fingerprint;
604 u_int32_t timeout[PFTM_MAX];
605 u_int32_t states_cur;
606 u_int32_t states_tot;
607 u_int32_t max_states;
609 u_int32_t max_src_nodes;
610 u_int32_t max_src_states;
611 u_int32_t max_src_conn;
624 u_int16_t return_icmp;
625 u_int16_t return_icmp6;
630 struct pf_rule_uid uid;
631 struct pf_rule_gid gid;
640 u_int8_t match_tag_not;
643 #define PF_STATE_NORMAL 0x1
644 #define PF_STATE_MODULATE 0x2
645 #define PF_STATE_SYNPROXY 0x3
659 u_int8_t anchor_relative;
660 u_int8_t anchor_wildcard;
662 #define PF_FLUSH 0x01
663 #define PF_FLUSH_GLOBAL 0x02
671 #define PF_PICKUPS_UNSPECIFIED 0
672 #define PF_PICKUPS_DISABLED 1
673 #define PF_PICKUPS_HASHONLY 2
674 #define PF_PICKUPS_ENABLED 3
675 u_int8_t pickup_mode;
676 u_int8_t unused01; /* available for use */
680 #define PFRULE_DROP 0x0000
681 #define PFRULE_RETURNRST 0x0001
682 #define PFRULE_FRAGMENT 0x0002
683 #define PFRULE_RETURNICMP 0x0004
684 #define PFRULE_RETURN 0x0008
685 #define PFRULE_NOSYNC 0x0010
686 #define PFRULE_SRCTRACK 0x0020 /* track source states */
687 #define PFRULE_RULESRCTRACK 0x0040 /* per rule */
690 #define PFRULE_NODF 0x0100
691 #define PFRULE_FRAGCROP 0x0200 /* non-buffering frag cache */
692 #define PFRULE_FRAGDROP 0x0400 /* drop funny fragments */
693 #define PFRULE_RANDOMID 0x0800
694 #define PFRULE_REASSEMBLE_TCP 0x1000
695 #define PFRULE_SET_TOS 0x2000
697 /* rule flags again */
698 #define PFRULE_IFBOUND 0x00010000 /* if-bound */
699 #define PFRULE_STATESLOPPY 0x00020000 /* sloppy state tracking */
701 #define PFSTATE_HIWAT 10000 /* default state table size */
702 #define PFSTATE_ADAPT_START 6000 /* default adaptive timeout start */
703 #define PFSTATE_ADAPT_END 12000 /* default adaptive timeout end */
706 struct pf_threshold {
708 #define PF_THRESHOLD_MULT 1000
709 #define PF_THRESHOLD_MAX 0xffffffff / PF_THRESHOLD_MULT
716 RB_ENTRY(pf_src_node) entry;
718 struct pf_addr raddr;
719 union pf_rule_ptr rule;
722 u_int64_t packets[2];
725 struct pf_threshold conn_rate;
732 #define PFSNODE_HIWAT 10000 /* default source node table size */
734 struct pf_state_scrub {
735 struct timeval pfss_last; /* time received last packet */
736 u_int32_t pfss_tsecr; /* last echoed timestamp */
737 u_int32_t pfss_tsval; /* largest timestamp */
738 u_int32_t pfss_tsval0; /* original timestamp */
739 u_int16_t pfss_flags;
740 #define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */
741 #define PFSS_PAWS 0x0010 /* stricter PAWS checks */
742 #define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */
743 #define PFSS_DATA_TS 0x0040 /* timestamp on data packets */
744 #define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */
745 u_int8_t pfss_ttl; /* stashed TTL */
747 u_int32_t pfss_ts_mod; /* timestamp modulation */
750 struct pf_state_host {
756 struct pf_state_peer {
757 struct pf_state_scrub *scrub; /* state is scrubbed */
758 u_int32_t seqlo; /* Max sequence number sent */
759 u_int32_t seqhi; /* Max the other end ACKd + win */
760 u_int32_t seqdiff; /* Sequence number modulator */
761 u_int16_t max_win; /* largest window (pre scaling) */
762 u_int16_t mss; /* Maximum segment size option */
763 u_int8_t state; /* active state level */
764 u_int8_t wscale; /* window scaling factor */
765 u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */
769 TAILQ_HEAD(pf_state_queue, pf_state);
771 /* keep synced with struct pf_state_key, used in RB_FIND */
772 struct pf_state_key_cmp {
773 struct pf_addr addr[2];
780 struct pf_state_item {
781 TAILQ_ENTRY(pf_state_item) entry;
785 TAILQ_HEAD(pf_statelisthead, pf_state_item);
787 struct pf_state_key {
788 struct pf_addr addr[2];
794 RB_ENTRY(pf_state_key) entry;
795 struct pf_statelisthead states;
796 struct pf_state_key *reverse;
800 #define PF_STATE_KEY_HASH_LENGTH offsetof(struct pf_state_key, pad[0])
802 /* keep synced with struct pf_state, used in RB_FIND */
803 struct pf_state_cmp {
810 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
819 TAILQ_ENTRY(pf_state) entry_list;
820 RB_ENTRY(pf_state) entry_id;
821 struct pf_state_peer src;
822 struct pf_state_peer dst;
823 union pf_rule_ptr rule;
824 union pf_rule_ptr anchor;
825 union pf_rule_ptr nat_rule;
826 struct pf_addr rt_addr;
827 struct pf_state_key *key[2]; /* addresses stack and wire */
829 struct pfi_kif *rt_kif;
830 struct pf_src_node *src_node;
831 struct pf_src_node *nat_src_node;
832 u_int64_t packets[2];
837 u_int32_t pfsync_time;
840 u_int8_t state_flags;
843 u_int8_t pickup_mode;
852 #define PFSTATE_ALLOWOPTS 0x01
853 #define PFSTATE_SLOPPY 0x02
854 #define PFSTATE_STACK_GLOBAL 0x04 /* pf_state_key[1] is global */
855 #define PFSTATE_CREATEINPROG 0x08 /* prevent find from finding it */
856 #define PFSTATE_HALF_DUPLEX 0x10 /* collision against translation */
861 #define PFSTATE_NOSYNC 0x01
862 #define PFSTATE_FROMSYNC 0x02
863 #define PFSTATE_STALE 0x04
866 * Unified state structures for pulling states out of the kernel
867 * used by pfsync(4) and the pf(4) ioctl.
869 struct pfsync_state_scrub {
870 u_int16_t pfss_flags;
871 u_int8_t pfss_ttl; /* stashed TTL */
872 #define PFSYNC_SCRUB_FLAG_VALID 0x01
874 u_int32_t pfss_ts_mod; /* timestamp modulation */
877 struct pfsync_state_peer {
878 struct pfsync_state_scrub scrub; /* state is scrubbed */
879 u_int32_t seqlo; /* Max sequence number sent */
880 u_int32_t seqhi; /* Max the other end ACKd + win */
881 u_int32_t seqdiff; /* Sequence number modulator */
882 u_int16_t max_win; /* largest window (pre scaling) */
883 u_int16_t mss; /* Maximum segment size option */
884 u_int8_t state; /* active state level */
885 u_int8_t wscale; /* window scaling factor */
889 struct pfsync_state_key {
890 struct pf_addr addr[2];
894 struct pfsync_state {
896 char ifname[IFNAMSIZ];
897 struct pfsync_state_key key[2];
898 struct pfsync_state_peer src;
899 struct pfsync_state_peer dst;
900 struct pf_addr rt_addr;
906 u_int32_t packets[2][2];
907 u_int32_t bytes[2][2];
913 u_int8_t state_flags;
917 u_int8_t pickup_mode;
919 u_int16_t reserved01; /* future expansion */
920 u_int32_t reserved02;
921 u_int16_t reserved03[8];
922 u_int32_t reserved04[8];
925 #define PFSYNC_FLAG_COMPRESS 0x01
926 #define PFSYNC_FLAG_STALE 0x02
927 #define PFSYNC_FLAG_SRCNODE 0x04
928 #define PFSYNC_FLAG_NATSRCNODE 0x08
929 #define PFSTATE_GOT_SYN_MASK (PFSTATE_GOT_SYN1|PFSTATE_GOT_SYN2)
930 #define PFSTATE_GOT_SYN1 0x04 /* got SYN in one direction */
931 #define PFSTATE_GOT_SYN2 0x08 /* got SYN in the other direction */
933 /* for copies to/from network byte order */
934 /* ioctl interface also uses network byte order */
935 #define pf_state_peer_hton(s,d) do { \
936 (d)->seqlo = htonl((s)->seqlo); \
937 (d)->seqhi = htonl((s)->seqhi); \
938 (d)->seqdiff = htonl((s)->seqdiff); \
939 (d)->max_win = htons((s)->max_win); \
940 (d)->mss = htons((s)->mss); \
941 (d)->state = (s)->state; \
942 (d)->wscale = (s)->wscale; \
944 (d)->scrub.pfss_flags = \
945 htons((s)->scrub->pfss_flags & PFSS_TIMESTAMP); \
946 (d)->scrub.pfss_ttl = (s)->scrub->pfss_ttl; \
947 (d)->scrub.pfss_ts_mod = htonl((s)->scrub->pfss_ts_mod);\
948 (d)->scrub.scrub_flag = PFSYNC_SCRUB_FLAG_VALID; \
952 #define pf_state_peer_ntoh(s,d) do { \
953 (d)->seqlo = ntohl((s)->seqlo); \
954 (d)->seqhi = ntohl((s)->seqhi); \
955 (d)->seqdiff = ntohl((s)->seqdiff); \
956 (d)->max_win = ntohs((s)->max_win); \
957 (d)->mss = ntohs((s)->mss); \
958 (d)->state = (s)->state; \
959 (d)->wscale = (s)->wscale; \
960 if ((s)->scrub.scrub_flag == PFSYNC_SCRUB_FLAG_VALID && \
961 (d)->scrub != NULL) { \
962 (d)->scrub->pfss_flags = \
963 ntohs((s)->scrub.pfss_flags) & PFSS_TIMESTAMP; \
964 (d)->scrub->pfss_ttl = (s)->scrub.pfss_ttl; \
965 (d)->scrub->pfss_ts_mod = ntohl((s)->scrub.pfss_ts_mod);\
969 #define pf_state_counter_hton(s,d) do { \
970 d[0] = htonl((s>>32)&0xffffffff); \
971 d[1] = htonl(s&0xffffffff); \
974 #define pf_state_counter_from_pfsync(s) \
975 (((u_int64_t)(s[0])<<32) | (u_int64_t)(s[1]))
977 #define pf_state_counter_ntoh(s,d) do { \
983 TAILQ_HEAD(pf_rulequeue, pf_rule);
989 struct pf_rulequeue queues[2];
991 struct pf_rulequeue *ptr;
992 struct pf_rule **ptr_array;
997 } rules[PF_RULESET_MAX];
998 struct pf_anchor *anchor;
1004 RB_HEAD(pf_anchor_global, pf_anchor);
1005 RB_HEAD(pf_anchor_node, pf_anchor);
1007 RB_ENTRY(pf_anchor) entry_global;
1008 RB_ENTRY(pf_anchor) entry_node;
1009 struct pf_anchor *parent;
1010 struct pf_anchor_node children;
1011 char name[PF_ANCHOR_NAME_SIZE];
1012 char path[MAXPATHLEN];
1013 struct pf_ruleset ruleset;
1014 int refcnt; /* anchor rules */
1017 RB_PROTOTYPE(pf_anchor_global, pf_anchor, entry_global, pf_anchor_compare);
1018 RB_PROTOTYPE(pf_anchor_node, pf_anchor, entry_node, pf_anchor_compare);
1020 #define PF_RESERVED_ANCHOR "_pf"
1022 #define PFR_TFLAG_PERSIST 0x00000001
1023 #define PFR_TFLAG_CONST 0x00000002
1024 #define PFR_TFLAG_ACTIVE 0x00000004
1025 #define PFR_TFLAG_INACTIVE 0x00000008
1026 #define PFR_TFLAG_REFERENCED 0x00000010
1027 #define PFR_TFLAG_REFDANCHOR 0x00000020
1028 #define PFR_TFLAG_COUNTERS 0x00000040
1029 /* Adjust masks below when adding flags. */
1030 #define PFR_TFLAG_USRMASK 0x00000043
1031 #define PFR_TFLAG_SETMASK 0x0000003C
1032 #define PFR_TFLAG_ALLMASK 0x0000007F
1035 char pfrt_anchor[MAXPATHLEN];
1036 char pfrt_name[PF_TABLE_NAME_SIZE];
1037 u_int32_t pfrt_flags;
1038 u_int8_t pfrt_fback;
1041 enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED,
1042 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE,
1043 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_NOCOUNT, PFR_FB_MAX };
1047 struct in_addr _pfra_ip4addr;
1048 struct in6_addr _pfra_ip6addr;
1053 u_int8_t pfra_fback;
1055 #define pfra_ip4addr pfra_u._pfra_ip4addr
1056 #define pfra_ip6addr pfra_u._pfra_ip6addr
1058 enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX };
1059 enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX };
1060 #define PFR_OP_XPASS PFR_OP_ADDR_MAX
1063 struct pfr_addr pfras_a;
1064 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
1065 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
1069 enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX };
1072 struct pfr_table pfrts_t;
1073 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
1074 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
1075 u_int64_t pfrts_match;
1076 u_int64_t pfrts_nomatch;
1079 int pfrts_refcnt[PFR_REFCNT_MAX];
1081 #define pfrts_name pfrts_t.pfrt_name
1082 #define pfrts_flags pfrts_t.pfrt_flags
1084 struct pfr_kcounters {
1085 u_int64_t pfrkc_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
1086 u_int64_t pfrkc_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
1089 SLIST_HEAD(pfr_kentryworkq, pfr_kentry);
1091 struct radix_node pfrke_node[2];
1092 union sockaddr_union pfrke_sa;
1093 SLIST_ENTRY(pfr_kentry) pfrke_workq;
1096 struct pfr_kcounters *pfrke_counters;
1098 struct pfr_kroute *pfrke_route;
1105 u_int8_t pfrke_mark;
1106 u_int8_t pfrke_intrpool;
1108 #define pfrke_counters u.pfrke_counters
1109 #define pfrke_route u.pfrke_route
1112 SLIST_HEAD(pfr_ktableworkq, pfr_ktable);
1113 RB_HEAD(pfr_ktablehead, pfr_ktable);
1115 struct pfr_tstats pfrkt_ts;
1116 RB_ENTRY(pfr_ktable) pfrkt_tree;
1117 SLIST_ENTRY(pfr_ktable) pfrkt_workq;
1118 struct radix_node_head *pfrkt_ip4;
1119 struct radix_node_head *pfrkt_ip6;
1120 struct pfr_ktable *pfrkt_shadow;
1121 struct pfr_ktable *pfrkt_root;
1122 struct pf_ruleset *pfrkt_rs;
1126 #define pfrkt_t pfrkt_ts.pfrts_t
1127 #define pfrkt_name pfrkt_t.pfrt_name
1128 #define pfrkt_anchor pfrkt_t.pfrt_anchor
1129 #define pfrkt_ruleset pfrkt_t.pfrt_ruleset
1130 #define pfrkt_flags pfrkt_t.pfrt_flags
1131 #define pfrkt_cnt pfrkt_ts.pfrts_cnt
1132 #define pfrkt_refcnt pfrkt_ts.pfrts_refcnt
1133 #define pfrkt_packets pfrkt_ts.pfrts_packets
1134 #define pfrkt_bytes pfrkt_ts.pfrts_bytes
1135 #define pfrkt_match pfrkt_ts.pfrts_match
1136 #define pfrkt_nomatch pfrkt_ts.pfrts_nomatch
1137 #define pfrkt_tzero pfrkt_ts.pfrts_tzero
1139 RB_HEAD(pf_state_tree, pf_state_key);
1140 RB_PROTOTYPE(pf_state_tree, pf_state_key, entry, pf_state_compare_key);
1141 RB_HEAD(pf_state_rtree, pf_state_key);
1142 RB_PROTOTYPE(pf_state_rtree, pf_state_key, entry, pf_state_compare_rkey);
1144 RB_HEAD(pf_state_tree_ext_gwy, pf_state_key);
1145 RB_PROTOTYPE(pf_state_tree_ext_gwy, pf_state_key,
1146 entry_ext_gwy, pf_state_compare_ext_gwy);
1149 char pfif_name[IFNAMSIZ];
1150 u_int64_t pfif_packets[2][2][2];
1151 u_int64_t pfif_bytes[2][2][2];
1152 u_int64_t pfif_addcnt;
1153 u_int64_t pfif_delcnt;
1160 TAILQ_HEAD(pfi_grouphead, pfi_kif);
1161 TAILQ_HEAD(pfi_statehead, pfi_kif);
1162 RB_HEAD(pfi_ifhead, pfi_kif);
1165 extern struct pf_state_tree pf_statetbl[MAXCPU+1];
1167 /* keep synced with pfi_kif, used in RB_FIND */
1168 struct pfi_kif_cmp {
1169 char pfik_ifname[IFNAMSIZ];
1173 struct pfi_if pfik_if;
1174 RB_ENTRY(pfi_kif) pfik_tree;
1175 u_int64_t pfik_packets[2][2][2];
1176 u_int64_t pfik_bytes[2][2][2];
1177 u_int32_t pfik_tzero;
1179 struct hook_desc_head *pfik_ah_head;
1180 void *pfik_ah_cookie;
1181 struct pfi_kif *pfik_parent;
1182 struct ifnet *pfik_ifp;
1183 struct ifg_group *pfik_group;
1186 TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs;
1188 #define pfik_name pfik_if.pfif_name
1189 #define pfik_packets pfik_if.pfif_packets
1190 #define pfik_bytes pfik_if.pfif_bytes
1191 #define pfik_tzero pfik_if.pfif_tzero
1192 #define pfik_flags pfik_if.pfif_flags
1193 #define pfik_addcnt pfik_if.pfif_addcnt
1194 #define pfik_delcnt pfik_if.pfif_delcnt
1195 #define pfik_states pfik_if.pfif_states
1196 #define pfik_rules pfik_if.pfif_rules
1204 #define PFI_IFLAG_GROUP 0x0001 /* group of interfaces */
1205 #define PFI_IFLAG_INSTANCE 0x0002 /* single instance */
1206 #define PFI_IFLAG_CLONABLE 0x0010 /* clonable group */
1207 #define PFI_IFLAG_DYNAMIC 0x0020 /* dynamic group */
1208 #define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */
1209 #define PFI_IFLAG_PLACEHOLDER 0x8000 /* placeholder group/interface */
1218 u_int64_t tot_len; /* Make Mickey money */
1224 struct icmp6_hdr *icmp6;
1229 struct pf_rule *nat_rule; /* nat/rdr rule applied to packet */
1232 struct pf_addr *src; /* src address */
1233 struct pf_addr *dst; /* dst address */
1237 u_int32_t p_len; /* total length of payload */
1240 u_int16_t *proto_sum;
1241 u_int16_t flags; /* Let SCRUB trigger behavior in
1242 * state code. Easier than tags */
1243 #define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */
1244 #define PFDESC_IP_REAS 0x0002 /* IP frags would've been reassembled */
1248 u_int8_t dir; /* direction */
1249 u_int8_t sidx; /* key index for source */
1250 u_int8_t didx; /* key index for destination */
1251 u_int8_t not_cpu_localized; /* translation not localized */
1254 /* flags for RDR options */
1255 #define PF_DPORT_RANGE 0x01 /* Dest port uses range */
1256 #define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */
1258 /* Reasons code for passing/dropping a packet */
1259 #define PFRES_MATCH 0 /* Explicit match of a rule */
1260 #define PFRES_BADOFF 1 /* Bad offset for pull_hdr */
1261 #define PFRES_FRAG 2 /* Dropping following fragment */
1262 #define PFRES_SHORT 3 /* Dropping short packet */
1263 #define PFRES_NORM 4 /* Dropping by normalizer */
1264 #define PFRES_MEMORY 5 /* Dropped due to lacking mem */
1265 #define PFRES_TS 6 /* Bad TCP Timestamp (RFC1323) */
1266 #define PFRES_CONGEST 7 /* Congestion (of ipintrq) */
1267 #define PFRES_IPOPTIONS 8 /* IP option */
1268 #define PFRES_PROTCKSUM 9 /* Protocol checksum invalid */
1269 #define PFRES_BADSTATE 10 /* State mismatch */
1270 #define PFRES_STATEINS 11 /* State insertion failure */
1271 #define PFRES_MAXSTATES 12 /* State limit */
1272 #define PFRES_SRCLIMIT 13 /* Source node/conn limit */
1273 #define PFRES_SYNPROXY 14 /* SYN proxy */
1274 #define PFRES_MAX 15 /* total+1 */
1276 #define PFRES_NAMES { \
1295 /* Counters for other things we want to keep track of */
1296 #define LCNT_STATES 0 /* states */
1297 #define LCNT_SRCSTATES 1 /* max-src-states */
1298 #define LCNT_SRCNODES 2 /* max-src-nodes */
1299 #define LCNT_SRCCONN 3 /* max-src-conn */
1300 #define LCNT_SRCCONNRATE 4 /* max-src-conn-rate */
1301 #define LCNT_OVERLOAD_TABLE 5 /* entry added to overload table */
1302 #define LCNT_OVERLOAD_FLUSH 6 /* state entries flushed */
1303 #define LCNT_MAX 7 /* total+1 */
1305 #define LCNT_NAMES { \
1306 "max states per rule", \
1310 "max-src-conn-rate", \
1311 "overload table insertion", \
1312 "overload flush states", \
1316 /* UDP state enumeration */
1317 #define PFUDPS_NO_TRAFFIC 0
1318 #define PFUDPS_SINGLE 1
1319 #define PFUDPS_MULTIPLE 2
1321 #define PFUDPS_NSTATES 3 /* number of state levels */
1323 #define PFUDPS_NAMES { \
1330 /* Other protocol state enumeration */
1331 #define PFOTHERS_NO_TRAFFIC 0
1332 #define PFOTHERS_SINGLE 1
1333 #define PFOTHERS_MULTIPLE 2
1335 #define PFOTHERS_NSTATES 3 /* number of state levels */
1337 #define PFOTHERS_NAMES { \
1344 #define FCNT_STATE_SEARCH 0
1345 #define FCNT_STATE_INSERT 1
1346 #define FCNT_STATE_REMOVALS 2
1349 #define SCNT_SRC_NODE_SEARCH 0
1350 #define SCNT_SRC_NODE_INSERT 1
1351 #define SCNT_SRC_NODE_REMOVALS 2
1354 #define ACTION_SET(a, x) \
1360 #define REASON_SET(a, x) \
1362 u_short *r = (a); /* keep -Waddress happy */ \
1365 if ((x) < PFRES_MAX) \
1366 pf_status.counters[(x)]++; \
1370 u_int64_t counters[PFRES_MAX];
1371 u_int64_t lcounters[LCNT_MAX]; /* limit counters */
1372 u_int64_t fcounters[FCNT_MAX];
1373 u_int64_t scounters[SCNT_MAX];
1374 u_int64_t pcounters[2][2][3];
1375 u_int64_t bcounters[2][2];
1376 u_int64_t stateid; /* atomic */
1378 u_int32_t states; /* atomic */
1379 u_int32_t src_nodes; /* atomic */
1383 char ifname[IFNAMSIZ];
1384 u_int8_t pf_chksum[PF_MD5_DIGEST_LENGTH];
1404 /* real-time service curve */
1405 u_int rtsc_m1; /* slope of the 1st segment in bps */
1406 u_int rtsc_d; /* the x-projection of m1 in msec */
1407 u_int rtsc_m2; /* slope of the 2nd segment in bps */
1408 /* link-sharing service curve */
1412 /* upper-limit service curve */
1420 * XXX this needs some work
1423 u_int nbuckets; /* hash buckets */
1424 u_int hogs_m1; /* hog detection bandwidth */
1427 /* link-sharing service curve */
1434 char ifname[IFNAMSIZ];
1436 void *altq_disc; /* discipline-specific state */
1437 TAILQ_ENTRY(pf_altq) entries;
1439 /* scheduler spec */
1440 u_int8_t scheduler; /* scheduler type */
1441 u_int16_t tbrsize; /* tokenbucket regulator size */
1442 u_int32_t ifbandwidth; /* interface bandwidth */
1445 char qname[PF_QNAME_SIZE]; /* queue name */
1446 char parent[PF_QNAME_SIZE]; /* parent name */
1447 u_int32_t parent_qid; /* parent queue id */
1448 u_int32_t bandwidth; /* queue bandwidth */
1449 u_int8_t priority; /* priority */
1450 u_int16_t qlimit; /* queue size limit */
1451 u_int16_t flags; /* misc flags */
1453 struct cbq_opts cbq_opts;
1454 struct priq_opts priq_opts;
1455 struct hfsc_opts hfsc_opts;
1456 struct fairq_opts fairq_opts;
1459 u_int32_t qid; /* return value */
1463 * DO NOT USE PF_TAG_GENERATED! Set PF_MBUF_TAGGED in fw_flags instead and
1464 * then clear pf.flags. The mbuf allocator does not automatically clear
1465 * the pf fields in the mbuf packet header.
1467 /*#define PF_TAG_GENERATED 0x01*/
1468 #define PF_TAG_FRAGCACHE 0x02
1469 #define PF_TAG_TRANSLATE_LOCALHOST 0x04
1470 #define PF_TAG_STATE_HASHED 0x08
1473 TAILQ_ENTRY(pf_tagname) entries;
1474 char name[PF_TAG_NAME_SIZE];
1481 struct in_addr ipv4;
1482 struct in6_addr ipv6;
1487 #define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */
1488 #define PFFRAG_FRAG_HIWAT 1000 /* Number of fragmented packets */
1489 #define PFFRAG_FRCENT_HIWAT 50000 /* Number of fragment cache entries */
1490 #define PFFRAG_FRCACHE_HIWAT 10000 /* Number of fragment descriptors */
1492 #define PFR_KTABLE_HIWAT 1000 /* Number of tables */
1493 #define PFR_KENTRY_HIWAT 200000 /* Number of table entries */
1494 #define PFR_KENTRY_HIWAT_SMALL 100000 /* Number of table entries (tiny hosts) */
1497 * ioctl parameter structures
1500 struct pfioc_pooladdr {
1508 char anchor[MAXPATHLEN];
1509 struct pf_pooladdr addr;
1515 u_int32_t pool_ticket;
1517 char anchor[MAXPATHLEN];
1518 char anchor_call[MAXPATHLEN];
1519 struct pf_rule rule;
1522 struct pfioc_natlook {
1523 struct pf_addr saddr;
1524 struct pf_addr daddr;
1525 struct pf_addr rsaddr;
1526 struct pf_addr rdaddr;
1536 struct pfioc_state {
1537 struct pfsync_state state;
1540 struct pfioc_src_node_kill {
1541 sa_family_t psnk_af;
1542 struct pf_rule_addr psnk_src;
1543 struct pf_rule_addr psnk_dst;
1547 struct pfioc_state_kill {
1548 struct pf_state_cmp psk_pfcmp;
1551 struct pf_rule_addr psk_src;
1552 struct pf_rule_addr psk_dst;
1553 char psk_ifname[IFNAMSIZ];
1554 char psk_label[PF_RULE_LABEL_SIZE];
1558 struct pfioc_states {
1562 struct pfsync_state *psu_states;
1564 #define ps_buf ps_u.psu_buf
1565 #define ps_states ps_u.psu_states
1568 struct pfioc_src_nodes {
1572 struct pf_src_node *psu_src_nodes;
1574 #define psn_buf psn_u.psu_buf
1575 #define psn_src_nodes psn_u.psu_src_nodes
1579 char ifname[IFNAMSIZ];
1587 struct pfioc_limit {
1596 struct pf_altq altq;
1599 struct pfioc_qstats {
1607 struct pfioc_anchor {
1609 char name[PF_ANCHOR_NAME_SIZE];
1612 struct pfioc_ruleset {
1614 char path[MAXPATHLEN];
1615 char name[PF_ANCHOR_NAME_SIZE];
1618 #define PF_RULESET_ALTQ (PF_RULESET_MAX)
1619 #define PF_RULESET_TABLE (PF_RULESET_MAX+1)
1620 struct pfioc_trans {
1621 int size; /* number of elements */
1622 int esize; /* size of each element in bytes */
1623 struct pfioc_trans_e {
1625 char anchor[MAXPATHLEN];
1630 #define PFR_FLAG_ATOMIC 0x00000001
1631 #define PFR_FLAG_DUMMY 0x00000002
1632 #define PFR_FLAG_FEEDBACK 0x00000004
1633 #define PFR_FLAG_CLSTATS 0x00000008
1634 #define PFR_FLAG_ADDRSTOO 0x00000010
1635 #define PFR_FLAG_REPLACE 0x00000020
1636 #define PFR_FLAG_ALLRSETS 0x00000040
1637 #define PFR_FLAG_ALLMASK 0x0000007F
1639 #define PFR_FLAG_USERIOCTL 0x10000000
1642 struct pfioc_table {
1643 struct pfr_table pfrio_table;
1652 u_int32_t pfrio_ticket;
1654 #define pfrio_exists pfrio_nadd
1655 #define pfrio_nzero pfrio_nadd
1656 #define pfrio_nmatch pfrio_nadd
1657 #define pfrio_naddr pfrio_size2
1658 #define pfrio_setflag pfrio_size2
1659 #define pfrio_clrflag pfrio_nadd
1661 struct pfioc_iface {
1662 char pfiio_name[IFNAMSIZ];
1675 #define DIOCSTART _IO ('D', 1)
1676 #define DIOCSTOP _IO ('D', 2)
1677 #define DIOCBEGINRULES _IOWR('D', 3, struct pfioc_rule)
1678 #define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule)
1679 #define DIOCCOMMITRULES _IOWR('D', 5, struct pfioc_rule)
1680 #define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule)
1681 #define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule)
1682 /* XXX cut 8 - 17 */
1683 #define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill)
1684 #define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state)
1685 #define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if)
1686 #define DIOCGETSTATUS _IOWR('D', 21, struct pf_status)
1687 #define DIOCCLRSTATUS _IO ('D', 22)
1688 #define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook)
1689 #define DIOCSETDEBUG _IOWR('D', 24, u_int32_t)
1690 #define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states)
1691 #define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule)
1692 /* XXX cut 26 - 28 */
1693 #define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm)
1694 #define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm)
1695 #define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state)
1696 #define DIOCCLRRULECTRS _IO ('D', 38)
1697 #define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit)
1698 #define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit)
1699 #define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill)
1700 #define DIOCSTARTALTQ _IO ('D', 42)
1701 #define DIOCSTOPALTQ _IO ('D', 43)
1702 #define DIOCBEGINALTQS _IOWR('D', 44, u_int32_t)
1703 #define DIOCADDALTQ _IOWR('D', 45, struct pfioc_altq)
1704 #define DIOCCOMMITALTQS _IOWR('D', 46, u_int32_t)
1705 #define DIOCGETALTQS _IOWR('D', 47, struct pfioc_altq)
1706 #define DIOCGETALTQ _IOWR('D', 48, struct pfioc_altq)
1707 #define DIOCCHANGEALTQ _IOWR('D', 49, struct pfioc_altq)
1708 #define DIOCGETQSTATS _IOWR('D', 50, struct pfioc_qstats)
1709 #define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr)
1710 #define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr)
1711 #define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr)
1712 #define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr)
1713 #define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr)
1714 /* XXX cut 55 - 57 */
1715 #define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset)
1716 #define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset)
1717 #define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table)
1718 #define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table)
1719 #define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table)
1720 #define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table)
1721 #define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table)
1722 #define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table)
1723 #define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table)
1724 #define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table)
1725 #define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table)
1726 #define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table)
1727 #define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table)
1728 #define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table)
1729 #define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table)
1730 #define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table)
1731 #define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table)
1732 #define DIOCRINABEGIN _IOWR('D', 75, struct pfioc_table)
1733 #define DIOCRINACOMMIT _IOWR('D', 76, struct pfioc_table)
1734 #define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table)
1735 #define DIOCOSFPFLUSH _IO('D', 78)
1736 #define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl)
1737 #define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl)
1738 #define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans)
1739 #define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans)
1740 #define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans)
1741 #define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes)
1742 #define DIOCCLRSRCNODES _IO('D', 85)
1743 #define DIOCSETHOSTID _IOWR('D', 86, u_int32_t)
1744 #define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface)
1745 #define DIOCICLRISTATS _IOWR('D', 88, struct pfioc_iface)
1746 #define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface)
1747 #define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface)
1748 #define DIOCKILLSRCNODES _IOWR('D', 91, struct pfioc_src_node_kill)
1750 char ifname[IFNAMSIZ];
1753 #define DIOCGIFSPEED _IOWR('D', 89, struct pf_ifspeed)
1756 RB_HEAD(pf_src_tree, pf_src_node);
1757 RB_PROTOTYPE(pf_src_tree, pf_src_node, entry, pf_src_compare);
1758 extern struct pf_src_tree tree_src_tracking[MAXCPU];
1760 RB_HEAD(pf_state_tree_id, pf_state);
1761 RB_PROTOTYPE(pf_state_tree_id, pf_state,
1762 entry_id, pf_state_compare_id);
1763 extern struct pf_state_tree_id tree_id[MAXCPU];
1764 extern struct pf_state_queue state_list[MAXCPU];
1766 TAILQ_HEAD(pf_poolqueue, pf_pool);
1767 extern struct pf_poolqueue pf_pools[2];
1768 TAILQ_HEAD(pf_altqqueue, pf_altq);
1769 extern struct pf_altqqueue pf_altqs[2];
1770 extern struct pf_palist pf_pabuf;
1772 extern u_int32_t ticket_altqs_active;
1773 extern u_int32_t ticket_altqs_inactive;
1774 extern int altqs_inactive_open;
1775 extern u_int32_t ticket_pabuf;
1776 extern struct pf_altqqueue *pf_altqs_active;
1777 extern struct pf_altqqueue *pf_altqs_inactive;
1778 extern struct pf_poolqueue *pf_pools_active;
1779 extern struct pf_poolqueue *pf_pools_inactive;
1780 extern int pf_tbladdr_setup(struct pf_ruleset *,
1781 struct pf_addr_wrap *);
1782 extern void pf_tbladdr_remove(struct pf_addr_wrap *);
1783 extern void pf_tbladdr_copyout(struct pf_addr_wrap *);
1784 extern void pf_calc_skip_steps(struct pf_rulequeue *);
1785 extern struct malloc_type *pf_src_tree_pl, *pf_rule_pl;
1786 extern struct malloc_type *pf_state_pl, *pf_state_key_pl, *pf_state_item_pl,
1787 *pf_altq_pl, *pf_pooladdr_pl;
1788 extern struct malloc_type *pfr_ktable_pl, *pfr_kentry_pl;
1789 extern struct malloc_type *pfr_kentry_pl2;
1790 extern struct malloc_type *pf_cache_pl, *pf_cent_pl;
1791 extern struct malloc_type *pf_state_scrub_pl;
1792 extern struct malloc_type *pfi_addr_pl;
1793 extern void pf_purge_thread(void *);
1794 extern int pf_purge_expired_src_nodes(int);
1795 extern int pf_purge_expired_states(u_int32_t, int);
1796 extern void pf_unlink_state(struct pf_state *);
1797 extern void pf_free_state(struct pf_state *);
1798 extern int pf_state_insert(struct pfi_kif *,
1799 struct pf_state_key *,
1800 struct pf_state_key *,
1802 extern int pf_insert_src_node(struct pf_src_node **,
1803 struct pf_rule *, struct pf_addr *,
1805 void pf_src_tree_remove_state(struct pf_state *);
1806 u_int32_t pf_state_hash(struct pf_state_key *sk);
1807 extern struct pf_state *pf_find_state_byid(struct pf_state_cmp *);
1808 extern struct pf_state *pf_find_state_all(struct pf_state_key_cmp *,
1810 extern void pf_print_state(struct pf_state *);
1811 extern void pf_print_flags(u_int8_t);
1812 extern u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t,
1815 extern struct ifnet *sync_ifp;
1816 extern struct pf_rule pf_default_rule;
1817 extern void pf_addrcpy(struct pf_addr *, struct pf_addr *,
1819 void pf_rm_rule(struct pf_rulequeue *,
1821 struct pf_divert *pf_find_divert(struct mbuf *);
1824 int pf_test(int, struct ifnet *, struct mbuf **, struct ether_header *, struct inpcb *);
1828 int pf_test6(int, struct ifnet *, struct mbuf **, struct ether_header *, struct inpcb *);
1829 void pf_poolmask(struct pf_addr *, struct pf_addr*,
1830 struct pf_addr *, struct pf_addr *, u_int8_t);
1831 void pf_addr_inc(struct pf_addr *, sa_family_t);
1834 void *pf_pull_hdr(struct mbuf *, int, void *, int, u_short *, u_short *,
1836 void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t);
1837 int pflog_packet(struct pfi_kif *, struct mbuf *, sa_family_t, u_int8_t,
1838 u_int8_t, struct pf_rule *, struct pf_rule *, struct pf_ruleset *,
1840 int pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *,
1841 struct pf_addr *, sa_family_t);
1842 int pf_match_addr_range(struct pf_addr *, struct pf_addr *,
1843 struct pf_addr *, sa_family_t);
1844 int pf_match(u_int8_t, u_int32_t, u_int32_t, u_int32_t);
1845 int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t);
1846 int pf_match_uid(u_int8_t, uid_t, uid_t, uid_t);
1847 int pf_match_gid(u_int8_t, gid_t, gid_t, gid_t);
1849 void pf_normalize_init(void);
1850 int pf_normalize_ip(struct mbuf **, int, struct pfi_kif *, u_short *,
1852 int pf_normalize_ip6(struct mbuf **, int, struct pfi_kif *, u_short *,
1854 int pf_normalize_tcp(int, struct pfi_kif *, struct mbuf *, int, int, void *,
1856 void pf_normalize_tcp_cleanup(struct pf_state *);
1857 int pf_normalize_tcp_init(struct mbuf *, int, struct pf_pdesc *,
1858 struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *);
1859 int pf_normalize_tcp_stateful(struct mbuf *, int, struct pf_pdesc *,
1860 u_short *, struct tcphdr *, struct pf_state *,
1861 struct pf_state_peer *, struct pf_state_peer *, int *);
1863 pf_state_expires(const struct pf_state *);
1864 void pf_purge_expired_fragments(void);
1865 int pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kif *);
1866 int pf_rtlabel_match(struct pf_addr *, sa_family_t, struct pf_addr_wrap *);
1867 int pf_socket_lookup(int, struct pf_pdesc *);
1868 struct pf_state_key *pf_alloc_state_key(int);
1869 int pf_state_key_attach(struct pf_state_key *, struct pf_state *, int);
1870 void pfr_initialize(void);
1871 int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t);
1872 void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t,
1873 u_int64_t, int, int, int);
1874 int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *,
1875 struct pf_addr **, struct pf_addr **, sa_family_t);
1876 void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *);
1878 pfr_attach_table(struct pf_ruleset *, char *);
1879 void pfr_detach_table(struct pfr_ktable *);
1880 int pfr_clr_tables(struct pfr_table *, int *, int);
1881 int pfr_add_tables(struct pfr_table *, int, int *, int);
1882 int pfr_del_tables(struct pfr_table *, int, int *, int);
1883 int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int);
1884 int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int);
1885 int pfr_clr_tstats(struct pfr_table *, int, int *, int);
1886 int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int);
1887 int pfr_clr_addrs(struct pfr_table *, int *, int);
1888 int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *, long);
1889 int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
1891 int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
1893 int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
1894 int *, int *, int *, int, u_int32_t);
1895 int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int);
1896 int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int);
1897 int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *,
1899 int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
1901 int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int);
1902 int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int);
1903 int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int);
1904 int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *,
1905 int *, u_int32_t, int);
1907 extern struct pfi_kif *pfi_all;
1909 void pfi_initialize(void);
1910 struct pfi_kif *pfi_kif_get(const char *);
1911 void pfi_cleanup(void);
1912 void pfi_attach_clone(struct if_clone *);
1913 void pfi_kif_ref(struct pfi_kif *, enum pfi_kif_refs);
1914 void pfi_kif_unref(struct pfi_kif *, enum pfi_kif_refs);
1915 int pfi_kif_match(struct pfi_kif *, struct pfi_kif *);
1916 void pfi_attach_ifnet(struct ifnet *);
1917 void pfi_detach_ifnet(struct ifnet *);
1918 struct pfi_kif *pfi_lookup_create(const char *);
1919 struct pfi_kif *pfi_lookup_if(const char *);
1920 void pfi_attach_ifgroup(struct ifg_group *);
1921 void pfi_detach_ifgroup(struct ifg_group *);
1922 void pfi_group_change(const char *);
1923 int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *,
1925 int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t);
1926 void pfi_dynaddr_remove(struct pf_addr_wrap *);
1927 void pfi_dynaddr_copyout(struct pf_addr_wrap *);
1928 void pfi_update_status(const char *, struct pf_status *);
1929 int pfi_get_ifaces(const char *, struct pfi_kif *, int *);
1930 int pfi_set_flags(const char *, int);
1931 int pfi_clear_flags(const char *, int);
1933 int pf_match_tag(struct mbuf *, struct pf_rule *, int *);
1934 u_int16_t pf_tagname2tag(char *);
1935 void pf_tag2tagname(u_int16_t, char *);
1936 void pf_tag_ref(u_int16_t);
1937 void pf_tag_unref(u_int16_t);
1938 int pf_tag_packet(struct mbuf *, int, int);
1939 u_int32_t pf_qname2qid(char *);
1940 void pf_qid2qname(u_int32_t, char *);
1941 void pf_qid_unref(u_int32_t);
1943 extern struct pf_status pf_status;
1944 extern struct malloc_type *pf_frent_pl, *pf_frag_pl;
1945 extern struct lock pf_consistency_lock;
1946 extern struct lock pf_global_statetbl_lock;
1948 struct pf_pool_limit {
1952 extern struct pf_pool_limit pf_pool_limits[PF_LIMIT_MAX];
1955 LIST_ENTRY(pf_frent) fr_next;
1961 LIST_ENTRY(pf_frcache) fr_next;
1966 struct pf_fragment {
1967 RB_ENTRY(pf_fragment) fr_entry;
1968 TAILQ_ENTRY(pf_fragment) frag_next;
1969 struct in_addr fr_src;
1970 struct in_addr fr_dst;
1971 u_int8_t fr_p; /* protocol of this fragment */
1972 u_int8_t fr_flags; /* status flags */
1973 u_int16_t fr_id; /* fragment id for reassemble */
1974 u_int16_t fr_max; /* fragment data max */
1975 u_int32_t fr_timeout;
1976 #define fr_queue fr_u.fru_queue
1977 #define fr_cache fr_u.fru_cache
1979 LIST_HEAD(pf_fragq, pf_frent) fru_queue; /* buffering */
1980 LIST_HEAD(pf_cacheq, pf_frcache) fru_cache; /* non-buf */
1984 #endif /* _KERNEL */
1986 extern struct radix_node_head *pf_maskhead;
1987 extern struct pf_anchor_global pf_anchors;
1988 extern struct pf_anchor pf_main_anchor;
1989 #define pf_main_ruleset pf_main_anchor.ruleset
1991 /* these ruleset functions can be linked into userland programs (pfctl) */
1992 int pf_get_ruleset_number(u_int8_t);
1993 void pf_init_ruleset(struct pf_ruleset *);
1994 int pf_anchor_setup(struct pf_rule *,
1995 const struct pf_ruleset *, const char *);
1996 int pf_anchor_copyout(const struct pf_ruleset *,
1997 const struct pf_rule *, struct pfioc_rule *);
1998 void pf_anchor_remove(struct pf_rule *);
1999 void pf_remove_if_empty_ruleset(struct pf_ruleset *);
2000 struct pf_anchor *pf_find_anchor(const char *);
2001 struct pf_ruleset *pf_find_ruleset(const char *);
2002 struct pf_ruleset *pf_find_or_create_ruleset(const char *);
2003 void pf_rs_initialize(void);
2005 /* The fingerprint functions can be linked into userland programs (tcpdump) */
2006 int pf_osfp_add(struct pf_osfp_ioctl *);
2008 struct pf_osfp_enlist *
2009 pf_osfp_fingerprint(struct pf_pdesc *, struct mbuf *, int,
2010 const struct tcphdr *);
2011 #endif /* _KERNEL */
2012 struct pf_osfp_enlist *
2013 pf_osfp_fingerprint_hdr(const struct ip *, const struct ip6_hdr *,
2014 const struct tcphdr *);
2015 void pf_osfp_flush(void);
2016 int pf_osfp_get(struct pf_osfp_ioctl *);
2017 void pf_osfp_initialize(void);
2018 int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t);
2019 struct pf_os_fingerprint *
2020 pf_osfp_validate(void);
2023 #endif /* _NET_PFVAR_H_ */