83
84/* PFTM default values */
85#define PFTM_TCP_FIRST_PACKET_VAL 120 /* First TCP packet */
86#define PFTM_TCP_OPENING_VAL 30 /* No response yet */
87#define PFTM_TCP_ESTABLISHED_VAL 24*60*60/* Established */
88#define PFTM_TCP_CLOSING_VAL 15 * 60 /* Half closed */
89#define PFTM_TCP_FIN_WAIT_VAL 45 /* Got both FINs */
90#define PFTM_TCP_CLOSED_VAL 90 /* Got a RST */
91#define PFTM_UDP_FIRST_PACKET_VAL 60 /* First UDP packet */
92#define PFTM_UDP_SINGLE_VAL 30 /* Unidirectional */
93#define PFTM_UDP_MULTIPLE_VAL 60 /* Bidirectional */
94#define PFTM_ICMP_FIRST_PACKET_VAL 20 /* First ICMP packet */
95#define PFTM_ICMP_ERROR_REPLY_VAL 10 /* Got error response */
96#define PFTM_OTHER_FIRST_PACKET_VAL 60 /* First packet */
97#define PFTM_OTHER_SINGLE_VAL 30 /* Unidirectional */
98#define PFTM_OTHER_MULTIPLE_VAL 60 /* Bidirectional */
99#define PFTM_FRAG_VAL 30 /* Fragment expire */
100#define PFTM_INTERVAL_VAL 10 /* Expire interval */
101#define PFTM_SRC_NODE_VAL 0 /* Source tracking */
102#define PFTM_TS_DIFF_VAL 30 /* Allowed TS diff */
103
104enum { PF_NOPFROUTE, PF_FASTROUTE, PF_ROUTETO, PF_DUPTO, PF_REPLYTO };
105enum { PF_LIMIT_STATES, PF_LIMIT_SRC_NODES, PF_LIMIT_FRAGS,
106 PF_LIMIT_TABLE_ENTRIES, PF_LIMIT_MAX };
107#define PF_POOL_IDMASK 0x0f
108enum { PF_POOL_NONE, PF_POOL_BITMASK, PF_POOL_RANDOM,
109 PF_POOL_SRCHASH, PF_POOL_ROUNDROBIN };
110enum { PF_ADDR_ADDRMASK, PF_ADDR_NOROUTE, PF_ADDR_DYNIFTL,
111 PF_ADDR_TABLE, PF_ADDR_URPFFAILED,
112 PF_ADDR_RANGE };
113#define PF_POOL_TYPEMASK 0x0f
114#define PF_POOL_STICKYADDR 0x20
115#define PF_WSCALE_FLAG 0x80
116#define PF_WSCALE_MASK 0x0f
117
118#define PF_LOG 0x01
119#define PF_LOG_ALL 0x02
120#define PF_LOG_SOCKET_LOOKUP 0x04
121
122struct pf_addr {
123 union {
124 struct in_addr v4;
125 struct in6_addr v6;
126 u_int8_t addr8[16];
127 u_int16_t addr16[8];
128 u_int32_t addr32[4];
129 } pfa; /* 128-bit address */
130#define v4 pfa.v4
131#define v6 pfa.v6
132#define addr8 pfa.addr8
133#define addr16 pfa.addr16
134#define addr32 pfa.addr32
135};
136
137#define PF_TABLE_NAME_SIZE 32
138
139#define PFI_AFLAG_NETWORK 0x01
140#define PFI_AFLAG_BROADCAST 0x02
141#define PFI_AFLAG_PEER 0x04
142#define PFI_AFLAG_MODEMASK 0x07
143#define PFI_AFLAG_NOALIAS 0x08
144
145struct pf_addr_wrap {
146 union {
147 struct {
148 struct pf_addr addr;
149 struct pf_addr mask;
150 } a;
151 char ifname[IFNAMSIZ];
152 char tblname[PF_TABLE_NAME_SIZE];
153 } v;
154 union {
155 struct pfi_dynaddr *dyn;
156 struct pfr_ktable *tbl;
157 int dyncnt;
158 int tblcnt;
159 } p;
160 u_int8_t type; /* PF_ADDR_* */
161 u_int8_t iflags; /* PFI_AFLAG_* */
162};
163
164#ifdef _KERNEL
165
166struct pfi_dynaddr {
167 TAILQ_ENTRY(pfi_dynaddr) entry;
168 struct pf_addr pfid_addr4;
169 struct pf_addr pfid_mask4;
170 struct pf_addr pfid_addr6;
171 struct pf_addr pfid_mask6;
172 struct pfr_ktable *pfid_kt;
173 struct pfi_kif *pfid_kif;
174 int pfid_net; /* mask or 128 */
175 int pfid_acnt4; /* address count IPv4 */
176 int pfid_acnt6; /* address count IPv6 */
177 sa_family_t pfid_af; /* rule af */
178 u_int8_t pfid_iflags; /* PFI_AFLAG_* */
179};
180
181/*
182 * Address manipulation macros
183 */
184#define HTONL(x) (x) = htonl((__uint32_t)(x))
185#define HTONS(x) (x) = htons((__uint16_t)(x))
186#define NTOHL(x) (x) = ntohl((__uint32_t)(x))
187#define NTOHS(x) (x) = ntohs((__uint16_t)(x))
188
189#define PF_NAME "pf"
190
191#define PF_HASHROW_ASSERT(h) mtx_assert(&(h)->lock, MA_OWNED)
192#define PF_HASHROW_LOCK(h) mtx_lock(&(h)->lock)
193#define PF_HASHROW_UNLOCK(h) mtx_unlock(&(h)->lock)
194
195#define PF_STATE_LOCK(s) \
196 do { \
197 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(s)]; \
198 PF_HASHROW_LOCK(_ih); \
199 } while (0)
200
201#define PF_STATE_UNLOCK(s) \
202 do { \
203 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH((s))]; \
204 PF_HASHROW_UNLOCK(_ih); \
205 } while (0)
206
207#ifdef INVARIANTS
208#define PF_STATE_LOCK_ASSERT(s) \
209 do { \
210 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(s)]; \
211 PF_HASHROW_ASSERT(_ih); \
212 } while (0)
213#else /* !INVARIANTS */
214#define PF_STATE_LOCK_ASSERT(s) do {} while (0)
215#endif /* INVARIANTS */
216
217extern struct mtx pf_unlnkdrules_mtx;
218#define PF_UNLNKDRULES_LOCK() mtx_lock(&pf_unlnkdrules_mtx)
219#define PF_UNLNKDRULES_UNLOCK() mtx_unlock(&pf_unlnkdrules_mtx)
220
221extern struct rwlock pf_rules_lock;
222#define PF_RULES_RLOCK() rw_rlock(&pf_rules_lock)
223#define PF_RULES_RUNLOCK() rw_runlock(&pf_rules_lock)
224#define PF_RULES_WLOCK() rw_wlock(&pf_rules_lock)
225#define PF_RULES_WUNLOCK() rw_wunlock(&pf_rules_lock)
226#define PF_RULES_ASSERT() rw_assert(&pf_rules_lock, RA_LOCKED)
227#define PF_RULES_RASSERT() rw_assert(&pf_rules_lock, RA_RLOCKED)
228#define PF_RULES_WASSERT() rw_assert(&pf_rules_lock, RA_WLOCKED)
229
230#define PF_MODVER 1
231#define PFLOG_MODVER 1
232#define PFSYNC_MODVER 1
233
234#define PFLOG_MINVER 1
235#define PFLOG_PREFVER PFLOG_MODVER
236#define PFLOG_MAXVER 1
237#define PFSYNC_MINVER 1
238#define PFSYNC_PREFVER PFSYNC_MODVER
239#define PFSYNC_MAXVER 1
240
241#ifdef INET
242#ifndef INET6
243#define PF_INET_ONLY
244#endif /* ! INET6 */
245#endif /* INET */
246
247#ifdef INET6
248#ifndef INET
249#define PF_INET6_ONLY
250#endif /* ! INET */
251#endif /* INET6 */
252
253#ifdef INET
254#ifdef INET6
255#define PF_INET_INET6
256#endif /* INET6 */
257#endif /* INET */
258
259#else
260
261#define PF_INET_INET6
262
263#endif /* _KERNEL */
264
265/* Both IPv4 and IPv6 */
266#ifdef PF_INET_INET6
267
268#define PF_AEQ(a, b, c) \
269 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \
270 ((a)->addr32[3] == (b)->addr32[3] && \
271 (a)->addr32[2] == (b)->addr32[2] && \
272 (a)->addr32[1] == (b)->addr32[1] && \
273 (a)->addr32[0] == (b)->addr32[0])) \
274
275#define PF_ANEQ(a, b, c) \
276 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \
277 ((a)->addr32[3] != (b)->addr32[3] || \
278 (a)->addr32[2] != (b)->addr32[2] || \
279 (a)->addr32[1] != (b)->addr32[1] || \
280 (a)->addr32[0] != (b)->addr32[0])) \
281
282#define PF_AZERO(a, c) \
283 ((c == AF_INET && !(a)->addr32[0]) || \
284 (!(a)->addr32[0] && !(a)->addr32[1] && \
285 !(a)->addr32[2] && !(a)->addr32[3] )) \
286
287#define PF_MATCHA(n, a, m, b, f) \
288 pf_match_addr(n, a, m, b, f)
289
290#define PF_ACPY(a, b, f) \
291 pf_addrcpy(a, b, f)
292
293#define PF_AINC(a, f) \
294 pf_addr_inc(a, f)
295
296#define PF_POOLMASK(a, b, c, d, f) \
297 pf_poolmask(a, b, c, d, f)
298
299#else
300
301/* Just IPv6 */
302
303#ifdef PF_INET6_ONLY
304
305#define PF_AEQ(a, b, c) \
306 ((a)->addr32[3] == (b)->addr32[3] && \
307 (a)->addr32[2] == (b)->addr32[2] && \
308 (a)->addr32[1] == (b)->addr32[1] && \
309 (a)->addr32[0] == (b)->addr32[0]) \
310
311#define PF_ANEQ(a, b, c) \
312 ((a)->addr32[3] != (b)->addr32[3] || \
313 (a)->addr32[2] != (b)->addr32[2] || \
314 (a)->addr32[1] != (b)->addr32[1] || \
315 (a)->addr32[0] != (b)->addr32[0]) \
316
317#define PF_AZERO(a, c) \
318 (!(a)->addr32[0] && \
319 !(a)->addr32[1] && \
320 !(a)->addr32[2] && \
321 !(a)->addr32[3] ) \
322
323#define PF_MATCHA(n, a, m, b, f) \
324 pf_match_addr(n, a, m, b, f)
325
326#define PF_ACPY(a, b, f) \
327 pf_addrcpy(a, b, f)
328
329#define PF_AINC(a, f) \
330 pf_addr_inc(a, f)
331
332#define PF_POOLMASK(a, b, c, d, f) \
333 pf_poolmask(a, b, c, d, f)
334
335#else
336
337/* Just IPv4 */
338#ifdef PF_INET_ONLY
339
340#define PF_AEQ(a, b, c) \
341 ((a)->addr32[0] == (b)->addr32[0])
342
343#define PF_ANEQ(a, b, c) \
344 ((a)->addr32[0] != (b)->addr32[0])
345
346#define PF_AZERO(a, c) \
347 (!(a)->addr32[0])
348
349#define PF_MATCHA(n, a, m, b, f) \
350 pf_match_addr(n, a, m, b, f)
351
352#define PF_ACPY(a, b, f) \
353 (a)->v4.s_addr = (b)->v4.s_addr
354
355#define PF_AINC(a, f) \
356 do { \
357 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \
358 } while (0)
359
360#define PF_POOLMASK(a, b, c, d, f) \
361 do { \
362 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \
363 (((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \
364 } while (0)
365
366#endif /* PF_INET_ONLY */
367#endif /* PF_INET6_ONLY */
368#endif /* PF_INET_INET6 */
369
370/*
371 * XXX callers not FIB-aware in our version of pf yet.
372 * OpenBSD fixed it later it seems, 2010/05/07 13:33:16 claudio.
373 */
374#define PF_MISMATCHAW(aw, x, af, neg, ifp, rtid) \
375 ( \
376 (((aw)->type == PF_ADDR_NOROUTE && \
377 pf_routable((x), (af), NULL, (rtid))) || \
378 (((aw)->type == PF_ADDR_URPFFAILED && (ifp) != NULL && \
379 pf_routable((x), (af), (ifp), (rtid))) || \
380 ((aw)->type == PF_ADDR_TABLE && \
381 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \
382 ((aw)->type == PF_ADDR_DYNIFTL && \
383 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \
384 ((aw)->type == PF_ADDR_RANGE && \
385 !pf_match_addr_range(&(aw)->v.a.addr, \
386 &(aw)->v.a.mask, (x), (af))) || \
387 ((aw)->type == PF_ADDR_ADDRMASK && \
388 !PF_AZERO(&(aw)->v.a.mask, (af)) && \
389 !PF_MATCHA(0, &(aw)->v.a.addr, \
390 &(aw)->v.a.mask, (x), (af))))) != \
391 (neg) \
392 )
393
394
395struct pf_rule_uid {
396 uid_t uid[2];
397 u_int8_t op;
398};
399
400struct pf_rule_gid {
401 uid_t gid[2];
402 u_int8_t op;
403};
404
405struct pf_rule_addr {
406 struct pf_addr_wrap addr;
407 u_int16_t port[2];
408 u_int8_t neg;
409 u_int8_t port_op;
410};
411
412struct pf_pooladdr {
413 struct pf_addr_wrap addr;
414 TAILQ_ENTRY(pf_pooladdr) entries;
415 char ifname[IFNAMSIZ];
416 struct pfi_kif *kif;
417};
418
419TAILQ_HEAD(pf_palist, pf_pooladdr);
420
421struct pf_poolhashkey {
422 union {
423 u_int8_t key8[16];
424 u_int16_t key16[8];
425 u_int32_t key32[4];
426 } pfk; /* 128-bit hash key */
427#define key8 pfk.key8
428#define key16 pfk.key16
429#define key32 pfk.key32
430};
431
432struct pf_pool {
433 struct pf_palist list;
434 struct pf_pooladdr *cur;
435 struct pf_poolhashkey key;
436 struct pf_addr counter;
437 int tblidx;
438 u_int16_t proxy_port[2];
439 u_int8_t opts;
440};
441
442
443/* A packed Operating System description for fingerprinting */
444typedef u_int32_t pf_osfp_t;
445#define PF_OSFP_ANY ((pf_osfp_t)0)
446#define PF_OSFP_UNKNOWN ((pf_osfp_t)-1)
447#define PF_OSFP_NOMATCH ((pf_osfp_t)-2)
448
449struct pf_osfp_entry {
450 SLIST_ENTRY(pf_osfp_entry) fp_entry;
451 pf_osfp_t fp_os;
452 int fp_enflags;
453#define PF_OSFP_EXPANDED 0x001 /* expanded entry */
454#define PF_OSFP_GENERIC 0x002 /* generic signature */
455#define PF_OSFP_NODETAIL 0x004 /* no p0f details */
456#define PF_OSFP_LEN 32
457 char fp_class_nm[PF_OSFP_LEN];
458 char fp_version_nm[PF_OSFP_LEN];
459 char fp_subtype_nm[PF_OSFP_LEN];
460};
461#define PF_OSFP_ENTRY_EQ(a, b) \
462 ((a)->fp_os == (b)->fp_os && \
463 memcmp((a)->fp_class_nm, (b)->fp_class_nm, PF_OSFP_LEN) == 0 && \
464 memcmp((a)->fp_version_nm, (b)->fp_version_nm, PF_OSFP_LEN) == 0 && \
465 memcmp((a)->fp_subtype_nm, (b)->fp_subtype_nm, PF_OSFP_LEN) == 0)
466
467/* handle pf_osfp_t packing */
468#define _FP_RESERVED_BIT 1 /* For the special negative #defines */
469#define _FP_UNUSED_BITS 1
470#define _FP_CLASS_BITS 10 /* OS Class (Windows, Linux) */
471#define _FP_VERSION_BITS 10 /* OS version (95, 98, NT, 2.4.54, 3.2) */
472#define _FP_SUBTYPE_BITS 10 /* patch level (NT SP4, SP3, ECN patch) */
473#define PF_OSFP_UNPACK(osfp, class, version, subtype) do { \
474 (class) = ((osfp) >> (_FP_VERSION_BITS+_FP_SUBTYPE_BITS)) & \
475 ((1 << _FP_CLASS_BITS) - 1); \
476 (version) = ((osfp) >> _FP_SUBTYPE_BITS) & \
477 ((1 << _FP_VERSION_BITS) - 1);\
478 (subtype) = (osfp) & ((1 << _FP_SUBTYPE_BITS) - 1); \
479} while(0)
480#define PF_OSFP_PACK(osfp, class, version, subtype) do { \
481 (osfp) = ((class) & ((1 << _FP_CLASS_BITS) - 1)) << (_FP_VERSION_BITS \
482 + _FP_SUBTYPE_BITS); \
483 (osfp) |= ((version) & ((1 << _FP_VERSION_BITS) - 1)) << \
484 _FP_SUBTYPE_BITS; \
485 (osfp) |= (subtype) & ((1 << _FP_SUBTYPE_BITS) - 1); \
486} while(0)
487
488/* the fingerprint of an OSes TCP SYN packet */
489typedef u_int64_t pf_tcpopts_t;
490struct pf_os_fingerprint {
491 SLIST_HEAD(pf_osfp_enlist, pf_osfp_entry) fp_oses; /* list of matches */
492 pf_tcpopts_t fp_tcpopts; /* packed TCP options */
493 u_int16_t fp_wsize; /* TCP window size */
494 u_int16_t fp_psize; /* ip->ip_len */
495 u_int16_t fp_mss; /* TCP MSS */
496 u_int16_t fp_flags;
497#define PF_OSFP_WSIZE_MOD 0x0001 /* Window modulus */
498#define PF_OSFP_WSIZE_DC 0x0002 /* Window don't care */
499#define PF_OSFP_WSIZE_MSS 0x0004 /* Window multiple of MSS */
500#define PF_OSFP_WSIZE_MTU 0x0008 /* Window multiple of MTU */
501#define PF_OSFP_PSIZE_MOD 0x0010 /* packet size modulus */
502#define PF_OSFP_PSIZE_DC 0x0020 /* packet size don't care */
503#define PF_OSFP_WSCALE 0x0040 /* TCP window scaling */
504#define PF_OSFP_WSCALE_MOD 0x0080 /* TCP window scale modulus */
505#define PF_OSFP_WSCALE_DC 0x0100 /* TCP window scale dont-care */
506#define PF_OSFP_MSS 0x0200 /* TCP MSS */
507#define PF_OSFP_MSS_MOD 0x0400 /* TCP MSS modulus */
508#define PF_OSFP_MSS_DC 0x0800 /* TCP MSS dont-care */
509#define PF_OSFP_DF 0x1000 /* IPv4 don't fragment bit */
510#define PF_OSFP_TS0 0x2000 /* Zero timestamp */
511#define PF_OSFP_INET6 0x4000 /* IPv6 */
512 u_int8_t fp_optcnt; /* TCP option count */
513 u_int8_t fp_wscale; /* TCP window scaling */
514 u_int8_t fp_ttl; /* IPv4 TTL */
515#define PF_OSFP_MAXTTL_OFFSET 40
516/* TCP options packing */
517#define PF_OSFP_TCPOPT_NOP 0x0 /* TCP NOP option */
518#define PF_OSFP_TCPOPT_WSCALE 0x1 /* TCP window scaling option */
519#define PF_OSFP_TCPOPT_MSS 0x2 /* TCP max segment size opt */
520#define PF_OSFP_TCPOPT_SACK 0x3 /* TCP SACK OK option */
521#define PF_OSFP_TCPOPT_TS 0x4 /* TCP timestamp option */
522#define PF_OSFP_TCPOPT_BITS 3 /* bits used by each option */
523#define PF_OSFP_MAX_OPTS \
524 (sizeof(((struct pf_os_fingerprint *)0)->fp_tcpopts) * 8) \
525 / PF_OSFP_TCPOPT_BITS
526
527 SLIST_ENTRY(pf_os_fingerprint) fp_next;
528};
529
530struct pf_osfp_ioctl {
531 struct pf_osfp_entry fp_os;
532 pf_tcpopts_t fp_tcpopts; /* packed TCP options */
533 u_int16_t fp_wsize; /* TCP window size */
534 u_int16_t fp_psize; /* ip->ip_len */
535 u_int16_t fp_mss; /* TCP MSS */
536 u_int16_t fp_flags;
537 u_int8_t fp_optcnt; /* TCP option count */
538 u_int8_t fp_wscale; /* TCP window scaling */
539 u_int8_t fp_ttl; /* IPv4 TTL */
540
541 int fp_getnum; /* DIOCOSFPGET number */
542};
543
544
545union pf_rule_ptr {
546 struct pf_rule *ptr;
547 u_int32_t nr;
548};
549
550#define PF_ANCHOR_NAME_SIZE 64
551
552struct pf_rule {
553 struct pf_rule_addr src;
554 struct pf_rule_addr dst;
555#define PF_SKIP_IFP 0
556#define PF_SKIP_DIR 1
557#define PF_SKIP_AF 2
558#define PF_SKIP_PROTO 3
559#define PF_SKIP_SRC_ADDR 4
560#define PF_SKIP_SRC_PORT 5
561#define PF_SKIP_DST_ADDR 6
562#define PF_SKIP_DST_PORT 7
563#define PF_SKIP_COUNT 8
564 union pf_rule_ptr skip[PF_SKIP_COUNT];
565#define PF_RULE_LABEL_SIZE 64
566 char label[PF_RULE_LABEL_SIZE];
567#define PF_QNAME_SIZE 64
568 char ifname[IFNAMSIZ];
569 char qname[PF_QNAME_SIZE];
570 char pqname[PF_QNAME_SIZE];
571#define PF_TAG_NAME_SIZE 64
572 char tagname[PF_TAG_NAME_SIZE];
573 char match_tagname[PF_TAG_NAME_SIZE];
574
575 char overload_tblname[PF_TABLE_NAME_SIZE];
576
577 TAILQ_ENTRY(pf_rule) entries;
578 struct pf_pool rpool;
579
580 u_int64_t evaluations;
581 u_int64_t packets[2];
582 u_int64_t bytes[2];
583
584 struct pfi_kif *kif;
585 struct pf_anchor *anchor;
586 struct pfr_ktable *overload_tbl;
587
588 pf_osfp_t os_fingerprint;
589
590 int rtableid;
591 u_int32_t timeout[PFTM_MAX];
592 u_int32_t states_cur;
593 u_int32_t states_tot;
594 u_int32_t max_states;
595 u_int32_t src_nodes;
596 u_int32_t max_src_nodes;
597 u_int32_t max_src_states;
598 u_int32_t spare1; /* netgraph */
599 u_int32_t max_src_conn;
600 struct {
601 u_int32_t limit;
602 u_int32_t seconds;
603 } max_src_conn_rate;
604 u_int32_t qid;
605 u_int32_t pqid;
606 u_int32_t rt_listid;
607 u_int32_t nr;
608 u_int32_t prob;
609 uid_t cuid;
610 pid_t cpid;
611
612 u_int16_t return_icmp;
613 u_int16_t return_icmp6;
614 u_int16_t max_mss;
615 u_int16_t tag;
616 u_int16_t match_tag;
617 u_int16_t spare2; /* netgraph */
618
619 struct pf_rule_uid uid;
620 struct pf_rule_gid gid;
621
622 u_int32_t rule_flag;
623 u_int8_t action;
624 u_int8_t direction;
625 u_int8_t log;
626 u_int8_t logif;
627 u_int8_t quick;
628 u_int8_t ifnot;
629 u_int8_t match_tag_not;
630 u_int8_t natpass;
631
632#define PF_STATE_NORMAL 0x1
633#define PF_STATE_MODULATE 0x2
634#define PF_STATE_SYNPROXY 0x3
635 u_int8_t keep_state;
636 sa_family_t af;
637 u_int8_t proto;
638 u_int8_t type;
639 u_int8_t code;
640 u_int8_t flags;
641 u_int8_t flagset;
642 u_int8_t min_ttl;
643 u_int8_t allow_opts;
644 u_int8_t rt;
645 u_int8_t return_ttl;
646 u_int8_t tos;
647 u_int8_t set_tos;
648 u_int8_t anchor_relative;
649 u_int8_t anchor_wildcard;
650
651#define PF_FLUSH 0x01
652#define PF_FLUSH_GLOBAL 0x02
653 u_int8_t flush;
654
655 struct {
656 struct pf_addr addr;
657 u_int16_t port;
658 } divert;
659};
660
661/* rule flags */
662#define PFRULE_DROP 0x0000
663#define PFRULE_RETURNRST 0x0001
664#define PFRULE_FRAGMENT 0x0002
665#define PFRULE_RETURNICMP 0x0004
666#define PFRULE_RETURN 0x0008
667#define PFRULE_NOSYNC 0x0010
668#define PFRULE_SRCTRACK 0x0020 /* track source states */
669#define PFRULE_RULESRCTRACK 0x0040 /* per rule */
670#define PFRULE_REFS 0x0080 /* rule has references */
671
672/* scrub flags */
673#define PFRULE_NODF 0x0100
674#define PFRULE_FRAGCROP 0x0200 /* non-buffering frag cache */
675#define PFRULE_FRAGDROP 0x0400 /* drop funny fragments */
676#define PFRULE_RANDOMID 0x0800
677#define PFRULE_REASSEMBLE_TCP 0x1000
678#define PFRULE_SET_TOS 0x2000
679
680/* rule flags again */
681#define PFRULE_IFBOUND 0x00010000 /* if-bound */
682#define PFRULE_STATESLOPPY 0x00020000 /* sloppy state tracking */
683
684#define PFSTATE_HIWAT 10000 /* default state table size */
685#define PFSTATE_ADAPT_START 6000 /* default adaptive timeout start */
686#define PFSTATE_ADAPT_END 12000 /* default adaptive timeout end */
687
688
689struct pf_threshold {
690 u_int32_t limit;
691#define PF_THRESHOLD_MULT 1000
692#define PF_THRESHOLD_MAX 0xffffffff / PF_THRESHOLD_MULT
693 u_int32_t seconds;
694 u_int32_t count;
695 u_int32_t last;
696};
697
698struct pf_src_node {
699 LIST_ENTRY(pf_src_node) entry;
700 struct pf_addr addr;
701 struct pf_addr raddr;
702 union pf_rule_ptr rule;
703 struct pfi_kif *kif;
704 u_int64_t bytes[2];
705 u_int64_t packets[2];
706 u_int32_t states;
707 u_int32_t conn;
708 struct pf_threshold conn_rate;
709 u_int32_t creation;
710 u_int32_t expire;
711 sa_family_t af;
712 u_int8_t ruletype;
713};
714
715#define PFSNODE_HIWAT 10000 /* default source node table size */
716
717struct pf_state_scrub {
718 struct timeval pfss_last; /* time received last packet */
719 u_int32_t pfss_tsecr; /* last echoed timestamp */
720 u_int32_t pfss_tsval; /* largest timestamp */
721 u_int32_t pfss_tsval0; /* original timestamp */
722 u_int16_t pfss_flags;
723#define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */
724#define PFSS_PAWS 0x0010 /* stricter PAWS checks */
725#define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */
726#define PFSS_DATA_TS 0x0040 /* timestamp on data packets */
727#define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */
728 u_int8_t pfss_ttl; /* stashed TTL */
729 u_int8_t pad;
730 u_int32_t pfss_ts_mod; /* timestamp modulation */
731};
732
733struct pf_state_host {
734 struct pf_addr addr;
735 u_int16_t port;
736 u_int16_t pad;
737};
738
739struct pf_state_peer {
740 struct pf_state_scrub *scrub; /* state is scrubbed */
741 u_int32_t seqlo; /* Max sequence number sent */
742 u_int32_t seqhi; /* Max the other end ACKd + win */
743 u_int32_t seqdiff; /* Sequence number modulator */
744 u_int16_t max_win; /* largest window (pre scaling) */
745 u_int16_t mss; /* Maximum segment size option */
746 u_int8_t state; /* active state level */
747 u_int8_t wscale; /* window scaling factor */
748 u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */
749 u_int8_t pad[1];
750};
751
752/* Keep synced with struct pf_state_key. */
753struct pf_state_key_cmp {
754 struct pf_addr addr[2];
755 u_int16_t port[2];
756 sa_family_t af;
757 u_int8_t proto;
758 u_int8_t pad[2];
759};
760
761struct pf_state_key {
762 struct pf_addr addr[2];
763 u_int16_t port[2];
764 sa_family_t af;
765 u_int8_t proto;
766 u_int8_t pad[2];
767
768 LIST_ENTRY(pf_state_key) entry;
769 TAILQ_HEAD(, pf_state) states[2];
770};
771
772/* Keep synced with struct pf_state. */
773struct pf_state_cmp {
774 u_int64_t id;
775 u_int32_t creatorid;
776 u_int8_t direction;
777 u_int8_t pad[3];
778};
779
780struct pf_state {
781 u_int64_t id;
782 u_int32_t creatorid;
783 u_int8_t direction;
784 u_int8_t pad[3];
785
786 u_int refs;
787 TAILQ_ENTRY(pf_state) sync_list;
788 TAILQ_ENTRY(pf_state) key_list[2];
789 LIST_ENTRY(pf_state) entry;
790 struct pf_state_peer src;
791 struct pf_state_peer dst;
792 union pf_rule_ptr rule;
793 union pf_rule_ptr anchor;
794 union pf_rule_ptr nat_rule;
795 struct pf_addr rt_addr;
796 struct pf_state_key *key[2]; /* addresses stack and wire */
797 struct pfi_kif *kif;
798 struct pfi_kif *rt_kif;
799 struct pf_src_node *src_node;
800 struct pf_src_node *nat_src_node;
801 u_int64_t packets[2];
802 u_int64_t bytes[2];
803 u_int32_t creation;
804 u_int32_t expire;
805 u_int32_t pfsync_time;
806 u_int16_t tag;
807 u_int8_t log;
808 u_int8_t state_flags;
809#define PFSTATE_ALLOWOPTS 0x01
810#define PFSTATE_SLOPPY 0x02
811/* was PFSTATE_PFLOW 0x04 */
812#define PFSTATE_NOSYNC 0x08
813#define PFSTATE_ACK 0x10
814 u_int8_t timeout;
815 u_int8_t sync_state; /* PFSYNC_S_x */
816
817 /* XXX */
818 u_int8_t sync_updates;
819 u_int8_t _tail[3];
820};
821
822/*
823 * Unified state structures for pulling states out of the kernel
824 * used by pfsync(4) and the pf(4) ioctl.
825 */
826struct pfsync_state_scrub {
827 u_int16_t pfss_flags;
828 u_int8_t pfss_ttl; /* stashed TTL */
829#define PFSYNC_SCRUB_FLAG_VALID 0x01
830 u_int8_t scrub_flag;
831 u_int32_t pfss_ts_mod; /* timestamp modulation */
832} __packed;
833
834struct pfsync_state_peer {
835 struct pfsync_state_scrub scrub; /* state is scrubbed */
836 u_int32_t seqlo; /* Max sequence number sent */
837 u_int32_t seqhi; /* Max the other end ACKd + win */
838 u_int32_t seqdiff; /* Sequence number modulator */
839 u_int16_t max_win; /* largest window (pre scaling) */
840 u_int16_t mss; /* Maximum segment size option */
841 u_int8_t state; /* active state level */
842 u_int8_t wscale; /* window scaling factor */
843 u_int8_t pad[6];
844} __packed;
845
846struct pfsync_state_key {
847 struct pf_addr addr[2];
848 u_int16_t port[2];
849};
850
851struct pfsync_state {
852 u_int64_t id;
853 char ifname[IFNAMSIZ];
854 struct pfsync_state_key key[2];
855 struct pfsync_state_peer src;
856 struct pfsync_state_peer dst;
857 struct pf_addr rt_addr;
858 u_int32_t rule;
859 u_int32_t anchor;
860 u_int32_t nat_rule;
861 u_int32_t creation;
862 u_int32_t expire;
863 u_int32_t packets[2][2];
864 u_int32_t bytes[2][2];
865 u_int32_t creatorid;
866 sa_family_t af;
867 u_int8_t proto;
868 u_int8_t direction;
869 u_int8_t __spare[2];
870 u_int8_t log;
871 u_int8_t state_flags;
872 u_int8_t timeout;
873 u_int8_t sync_flags;
874 u_int8_t updates;
875} __packed;
876
877#ifdef _KERNEL
878/* pfsync */
879typedef int pfsync_state_import_t(struct pfsync_state *, u_int8_t);
880typedef void pfsync_insert_state_t(struct pf_state *);
881typedef void pfsync_update_state_t(struct pf_state *);
882typedef void pfsync_delete_state_t(struct pf_state *);
883typedef void pfsync_clear_states_t(u_int32_t, const char *);
884typedef int pfsync_defer_t(struct pf_state *, struct mbuf *);
885
886extern pfsync_state_import_t *pfsync_state_import_ptr;
887extern pfsync_insert_state_t *pfsync_insert_state_ptr;
888extern pfsync_update_state_t *pfsync_update_state_ptr;
889extern pfsync_delete_state_t *pfsync_delete_state_ptr;
890extern pfsync_clear_states_t *pfsync_clear_states_ptr;
891extern pfsync_defer_t *pfsync_defer_ptr;
892
893void pfsync_state_export(struct pfsync_state *,
894 struct pf_state *);
895
896/* pflog */
897struct pf_ruleset;
898struct pf_pdesc;
899typedef int pflog_packet_t(struct pfi_kif *, struct mbuf *, sa_family_t,
900 u_int8_t, u_int8_t, struct pf_rule *, struct pf_rule *,
901 struct pf_ruleset *, struct pf_pdesc *, int);
902extern pflog_packet_t *pflog_packet_ptr;
903
904#define V_pf_end_threads VNET(pf_end_threads)
905#endif /* _KERNEL */
906
907#define PFSYNC_FLAG_SRCNODE 0x04
908#define PFSYNC_FLAG_NATSRCNODE 0x08
909
910/* for copies to/from network byte order */
911/* ioctl interface also uses network byte order */
912#define pf_state_peer_hton(s,d) do { \
913 (d)->seqlo = htonl((s)->seqlo); \
914 (d)->seqhi = htonl((s)->seqhi); \
915 (d)->seqdiff = htonl((s)->seqdiff); \
916 (d)->max_win = htons((s)->max_win); \
917 (d)->mss = htons((s)->mss); \
918 (d)->state = (s)->state; \
919 (d)->wscale = (s)->wscale; \
920 if ((s)->scrub) { \
921 (d)->scrub.pfss_flags = \
922 htons((s)->scrub->pfss_flags & PFSS_TIMESTAMP); \
923 (d)->scrub.pfss_ttl = (s)->scrub->pfss_ttl; \
924 (d)->scrub.pfss_ts_mod = htonl((s)->scrub->pfss_ts_mod);\
925 (d)->scrub.scrub_flag = PFSYNC_SCRUB_FLAG_VALID; \
926 } \
927} while (0)
928
929#define pf_state_peer_ntoh(s,d) do { \
930 (d)->seqlo = ntohl((s)->seqlo); \
931 (d)->seqhi = ntohl((s)->seqhi); \
932 (d)->seqdiff = ntohl((s)->seqdiff); \
933 (d)->max_win = ntohs((s)->max_win); \
934 (d)->mss = ntohs((s)->mss); \
935 (d)->state = (s)->state; \
936 (d)->wscale = (s)->wscale; \
937 if ((s)->scrub.scrub_flag == PFSYNC_SCRUB_FLAG_VALID && \
938 (d)->scrub != NULL) { \
939 (d)->scrub->pfss_flags = \
940 ntohs((s)->scrub.pfss_flags) & PFSS_TIMESTAMP; \
941 (d)->scrub->pfss_ttl = (s)->scrub.pfss_ttl; \
942 (d)->scrub->pfss_ts_mod = ntohl((s)->scrub.pfss_ts_mod);\
943 } \
944} while (0)
945
946#define pf_state_counter_hton(s,d) do { \
947 d[0] = htonl((s>>32)&0xffffffff); \
948 d[1] = htonl(s&0xffffffff); \
949} while (0)
950
951#define pf_state_counter_from_pfsync(s) \
952 (((u_int64_t)(s[0])<<32) | (u_int64_t)(s[1]))
953
954#define pf_state_counter_ntoh(s,d) do { \
955 d = ntohl(s[0]); \
956 d = d<<32; \
957 d += ntohl(s[1]); \
958} while (0)
959
960TAILQ_HEAD(pf_rulequeue, pf_rule);
961
962struct pf_anchor;
963
964struct pf_ruleset {
965 struct {
966 struct pf_rulequeue queues[2];
967 struct {
968 struct pf_rulequeue *ptr;
969 struct pf_rule **ptr_array;
970 u_int32_t rcount;
971 u_int32_t ticket;
972 int open;
973 } active, inactive;
974 } rules[PF_RULESET_MAX];
975 struct pf_anchor *anchor;
976 u_int32_t tticket;
977 int tables;
978 int topen;
979};
980
981RB_HEAD(pf_anchor_global, pf_anchor);
982RB_HEAD(pf_anchor_node, pf_anchor);
983struct pf_anchor {
984 RB_ENTRY(pf_anchor) entry_global;
985 RB_ENTRY(pf_anchor) entry_node;
986 struct pf_anchor *parent;
987 struct pf_anchor_node children;
988 char name[PF_ANCHOR_NAME_SIZE];
989 char path[MAXPATHLEN];
990 struct pf_ruleset ruleset;
991 int refcnt; /* anchor rules */
992 int match; /* XXX: used for pfctl black magic */
993};
994RB_PROTOTYPE(pf_anchor_global, pf_anchor, entry_global, pf_anchor_compare);
995RB_PROTOTYPE(pf_anchor_node, pf_anchor, entry_node, pf_anchor_compare);
996
997#define PF_RESERVED_ANCHOR "_pf"
998
999#define PFR_TFLAG_PERSIST 0x00000001
1000#define PFR_TFLAG_CONST 0x00000002
1001#define PFR_TFLAG_ACTIVE 0x00000004
1002#define PFR_TFLAG_INACTIVE 0x00000008
1003#define PFR_TFLAG_REFERENCED 0x00000010
1004#define PFR_TFLAG_REFDANCHOR 0x00000020
1005#define PFR_TFLAG_COUNTERS 0x00000040
1006/* Adjust masks below when adding flags. */
1007#define PFR_TFLAG_USRMASK (PFR_TFLAG_PERSIST | \
1008 PFR_TFLAG_CONST | \
1009 PFR_TFLAG_COUNTERS)
1010#define PFR_TFLAG_SETMASK (PFR_TFLAG_ACTIVE | \
1011 PFR_TFLAG_INACTIVE | \
1012 PFR_TFLAG_REFERENCED | \
1013 PFR_TFLAG_REFDANCHOR)
1014#define PFR_TFLAG_ALLMASK (PFR_TFLAG_PERSIST | \
1015 PFR_TFLAG_CONST | \
1016 PFR_TFLAG_ACTIVE | \
1017 PFR_TFLAG_INACTIVE | \
1018 PFR_TFLAG_REFERENCED | \
1019 PFR_TFLAG_REFDANCHOR | \
1020 PFR_TFLAG_COUNTERS)
1021
1022struct pf_anchor_stackframe;
1023
1024struct pfr_table {
1025 char pfrt_anchor[MAXPATHLEN];
1026 char pfrt_name[PF_TABLE_NAME_SIZE];
1027 u_int32_t pfrt_flags;
1028 u_int8_t pfrt_fback;
1029};
1030
1031enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED,
1032 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE,
1033 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_NOCOUNT, PFR_FB_MAX };
1034
1035struct pfr_addr {
1036 union {
1037 struct in_addr _pfra_ip4addr;
1038 struct in6_addr _pfra_ip6addr;
1039 } pfra_u;
1040 u_int8_t pfra_af;
1041 u_int8_t pfra_net;
1042 u_int8_t pfra_not;
1043 u_int8_t pfra_fback;
1044};
1045#define pfra_ip4addr pfra_u._pfra_ip4addr
1046#define pfra_ip6addr pfra_u._pfra_ip6addr
1047
1048enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX };
1049enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX };
1050#define PFR_OP_XPASS PFR_OP_ADDR_MAX
1051
1052struct pfr_astats {
1053 struct pfr_addr pfras_a;
1054 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
1055 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
1056 long pfras_tzero;
1057};
1058
1059enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX };
1060
1061struct pfr_tstats {
1062 struct pfr_table pfrts_t;
1063 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
1064 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
1065 u_int64_t pfrts_match;
1066 u_int64_t pfrts_nomatch;
1067 long pfrts_tzero;
1068 int pfrts_cnt;
1069 int pfrts_refcnt[PFR_REFCNT_MAX];
1070};
1071#define pfrts_name pfrts_t.pfrt_name
1072#define pfrts_flags pfrts_t.pfrt_flags
1073
1074#ifndef _SOCKADDR_UNION_DEFINED
1075#define _SOCKADDR_UNION_DEFINED
1076union sockaddr_union {
1077 struct sockaddr sa;
1078 struct sockaddr_in sin;
1079 struct sockaddr_in6 sin6;
1080};
1081#endif /* _SOCKADDR_UNION_DEFINED */
1082
1083struct 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];
1086};
1087
1088SLIST_HEAD(pfr_kentryworkq, pfr_kentry);
1089struct pfr_kentry {
1090 struct radix_node pfrke_node[2];
1091 union sockaddr_union pfrke_sa;
1092 SLIST_ENTRY(pfr_kentry) pfrke_workq;
1093 struct pfr_kcounters *pfrke_counters;
1094 long pfrke_tzero;
1095 u_int8_t pfrke_af;
1096 u_int8_t pfrke_net;
1097 u_int8_t pfrke_not;
1098 u_int8_t pfrke_mark;
1099};
1100
1101SLIST_HEAD(pfr_ktableworkq, pfr_ktable);
1102RB_HEAD(pfr_ktablehead, pfr_ktable);
1103struct pfr_ktable {
1104 struct pfr_tstats pfrkt_ts;
1105 RB_ENTRY(pfr_ktable) pfrkt_tree;
1106 SLIST_ENTRY(pfr_ktable) pfrkt_workq;
1107 struct radix_node_head *pfrkt_ip4;
1108 struct radix_node_head *pfrkt_ip6;
1109 struct pfr_ktable *pfrkt_shadow;
1110 struct pfr_ktable *pfrkt_root;
1111 struct pf_ruleset *pfrkt_rs;
1112 long pfrkt_larg;
1113 int pfrkt_nflags;
1114};
1115#define pfrkt_t pfrkt_ts.pfrts_t
1116#define pfrkt_name pfrkt_t.pfrt_name
1117#define pfrkt_anchor pfrkt_t.pfrt_anchor
1118#define pfrkt_ruleset pfrkt_t.pfrt_ruleset
1119#define pfrkt_flags pfrkt_t.pfrt_flags
1120#define pfrkt_cnt pfrkt_ts.pfrts_cnt
1121#define pfrkt_refcnt pfrkt_ts.pfrts_refcnt
1122#define pfrkt_packets pfrkt_ts.pfrts_packets
1123#define pfrkt_bytes pfrkt_ts.pfrts_bytes
1124#define pfrkt_match pfrkt_ts.pfrts_match
1125#define pfrkt_nomatch pfrkt_ts.pfrts_nomatch
1126#define pfrkt_tzero pfrkt_ts.pfrts_tzero
1127
1128/* keep synced with pfi_kif, used in RB_FIND */
1129struct pfi_kif_cmp {
1130 char pfik_name[IFNAMSIZ];
1131};
1132
1133struct pfi_kif {
1134 char pfik_name[IFNAMSIZ];
1135 union {
1136 RB_ENTRY(pfi_kif) _pfik_tree;
1137 LIST_ENTRY(pfi_kif) _pfik_list;
1138 } _pfik_glue;
1139#define pfik_tree _pfik_glue._pfik_tree
1140#define pfik_list _pfik_glue._pfik_list
1141 u_int64_t pfik_packets[2][2][2];
1142 u_int64_t pfik_bytes[2][2][2];
1143 u_int32_t pfik_tzero;
1144 u_int pfik_flags;
1145 struct ifnet *pfik_ifp;
1146 struct ifg_group *pfik_group;
1147 u_int pfik_rulerefs;
1148 TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs;
1149};
1150
1151#define PFI_IFLAG_REFS 0x0001 /* has state references */
1152#define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */
1153
1154struct pf_pdesc {
1155 struct {
1156 int done;
1157 uid_t uid;
1158 gid_t gid;
1159 } lookup;
1160 u_int64_t tot_len; /* Make Mickey money */
1161 union {
1162 struct tcphdr *tcp;
1163 struct udphdr *udp;
1164 struct icmp *icmp;
1165#ifdef INET6
1166 struct icmp6_hdr *icmp6;
1167#endif /* INET6 */
1168 void *any;
1169 } hdr;
1170
1171 struct pf_rule *nat_rule; /* nat/rdr rule applied to packet */
1172 struct pf_addr *src; /* src address */
1173 struct pf_addr *dst; /* dst address */
1174 u_int16_t *sport;
1175 u_int16_t *dport;
1176 struct pf_mtag *pf_mtag;
1177
1178 u_int32_t p_len; /* total length of payload */
1179
1180 u_int16_t *ip_sum;
1181 u_int16_t *proto_sum;
1182 u_int16_t flags; /* Let SCRUB trigger behavior in
1183 * state code. Easier than tags */
1184#define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */
1185#define PFDESC_IP_REAS 0x0002 /* IP frags would've been reassembled */
1186 sa_family_t af;
1187 u_int8_t proto;
1188 u_int8_t tos;
1189 u_int8_t dir; /* direction */
1190 u_int8_t sidx; /* key index for source */
1191 u_int8_t didx; /* key index for destination */
1192};
1193
1194/* flags for RDR options */
1195#define PF_DPORT_RANGE 0x01 /* Dest port uses range */
1196#define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */
1197
1198/* Reasons code for passing/dropping a packet */
1199#define PFRES_MATCH 0 /* Explicit match of a rule */
1200#define PFRES_BADOFF 1 /* Bad offset for pull_hdr */
1201#define PFRES_FRAG 2 /* Dropping following fragment */
1202#define PFRES_SHORT 3 /* Dropping short packet */
1203#define PFRES_NORM 4 /* Dropping by normalizer */
1204#define PFRES_MEMORY 5 /* Dropped due to lacking mem */
1205#define PFRES_TS 6 /* Bad TCP Timestamp (RFC1323) */
1206#define PFRES_CONGEST 7 /* Congestion (of ipintrq) */
1207#define PFRES_IPOPTIONS 8 /* IP option */
1208#define PFRES_PROTCKSUM 9 /* Protocol checksum invalid */
1209#define PFRES_BADSTATE 10 /* State mismatch */
1210#define PFRES_STATEINS 11 /* State insertion failure */
1211#define PFRES_MAXSTATES 12 /* State limit */
1212#define PFRES_SRCLIMIT 13 /* Source node/conn limit */
1213#define PFRES_SYNPROXY 14 /* SYN proxy */
1214#define PFRES_MAX 15 /* total+1 */
1215
1216#define PFRES_NAMES { \
1217 "match", \
1218 "bad-offset", \
1219 "fragment", \
1220 "short", \
1221 "normalize", \
1222 "memory", \
1223 "bad-timestamp", \
1224 "congestion", \
1225 "ip-option", \
1226 "proto-cksum", \
1227 "state-mismatch", \
1228 "state-insert", \
1229 "state-limit", \
1230 "src-limit", \
1231 "synproxy", \
1232 NULL \
1233}
1234
1235/* Counters for other things we want to keep track of */
1236#define LCNT_STATES 0 /* states */
1237#define LCNT_SRCSTATES 1 /* max-src-states */
1238#define LCNT_SRCNODES 2 /* max-src-nodes */
1239#define LCNT_SRCCONN 3 /* max-src-conn */
1240#define LCNT_SRCCONNRATE 4 /* max-src-conn-rate */
1241#define LCNT_OVERLOAD_TABLE 5 /* entry added to overload table */
1242#define LCNT_OVERLOAD_FLUSH 6 /* state entries flushed */
1243#define LCNT_MAX 7 /* total+1 */
1244
1245#define LCNT_NAMES { \
1246 "max states per rule", \
1247 "max-src-states", \
1248 "max-src-nodes", \
1249 "max-src-conn", \
1250 "max-src-conn-rate", \
1251 "overload table insertion", \
1252 "overload flush states", \
1253 NULL \
1254}
1255
1256/* UDP state enumeration */
1257#define PFUDPS_NO_TRAFFIC 0
1258#define PFUDPS_SINGLE 1
1259#define PFUDPS_MULTIPLE 2
1260
1261#define PFUDPS_NSTATES 3 /* number of state levels */
1262
1263#define PFUDPS_NAMES { \
1264 "NO_TRAFFIC", \
1265 "SINGLE", \
1266 "MULTIPLE", \
1267 NULL \
1268}
1269
1270/* Other protocol state enumeration */
1271#define PFOTHERS_NO_TRAFFIC 0
1272#define PFOTHERS_SINGLE 1
1273#define PFOTHERS_MULTIPLE 2
1274
1275#define PFOTHERS_NSTATES 3 /* number of state levels */
1276
1277#define PFOTHERS_NAMES { \
1278 "NO_TRAFFIC", \
1279 "SINGLE", \
1280 "MULTIPLE", \
1281 NULL \
1282}
1283
1284#define FCNT_STATE_SEARCH 0
1285#define FCNT_STATE_INSERT 1
1286#define FCNT_STATE_REMOVALS 2
1287#define FCNT_MAX 3
1288
1289#define SCNT_SRC_NODE_SEARCH 0
1290#define SCNT_SRC_NODE_INSERT 1
1291#define SCNT_SRC_NODE_REMOVALS 2
1292#define SCNT_MAX 3
1293
1294#define ACTION_SET(a, x) \
1295 do { \
1296 if ((a) != NULL) \
1297 *(a) = (x); \
1298 } while (0)
1299
1300#define REASON_SET(a, x) \
1301 do { \
1302 if ((a) != NULL) \
1303 *(a) = (x); \
1304 if (x < PFRES_MAX) \
1305 V_pf_status.counters[x]++; \
1306 } while (0)
1307
1308struct pf_status {
1309 u_int64_t counters[PFRES_MAX];
1310 u_int64_t lcounters[LCNT_MAX]; /* limit counters */
1311 u_int64_t fcounters[FCNT_MAX];
1312 u_int64_t scounters[SCNT_MAX];
1313 u_int64_t pcounters[2][2][3];
1314 u_int64_t bcounters[2][2];
1315 u_int32_t running;
1316 u_int32_t states;
1317 u_int32_t src_nodes;
1318 u_int32_t since;
1319 u_int32_t debug;
1320 u_int32_t hostid;
1321 char ifname[IFNAMSIZ];
1322 u_int8_t pf_chksum[PF_MD5_DIGEST_LENGTH];
1323};
1324
1325struct cbq_opts {
1326 u_int minburst;
1327 u_int maxburst;
1328 u_int pktsize;
1329 u_int maxpktsize;
1330 u_int ns_per_byte;
1331 u_int maxidle;
1332 int minidle;
1333 u_int offtime;
1334 int flags;
1335};
1336
1337struct priq_opts {
1338 int flags;
1339};
1340
1341struct hfsc_opts {
1342 /* real-time service curve */
1343 u_int rtsc_m1; /* slope of the 1st segment in bps */
1344 u_int rtsc_d; /* the x-projection of m1 in msec */
1345 u_int rtsc_m2; /* slope of the 2nd segment in bps */
1346 /* link-sharing service curve */
1347 u_int lssc_m1;
1348 u_int lssc_d;
1349 u_int lssc_m2;
1350 /* upper-limit service curve */
1351 u_int ulsc_m1;
1352 u_int ulsc_d;
1353 u_int ulsc_m2;
1354 int flags;
1355};
1356
1357struct pf_altq {
1358 char ifname[IFNAMSIZ];
1359
1360 void *altq_disc; /* discipline-specific state */
1361 TAILQ_ENTRY(pf_altq) entries;
1362
1363 /* scheduler spec */
1364 u_int8_t scheduler; /* scheduler type */
1365 u_int16_t tbrsize; /* tokenbucket regulator size */
1366 u_int32_t ifbandwidth; /* interface bandwidth */
1367
1368 /* queue spec */
1369 char qname[PF_QNAME_SIZE]; /* queue name */
1370 char parent[PF_QNAME_SIZE]; /* parent name */
1371 u_int32_t parent_qid; /* parent queue id */
1372 u_int32_t bandwidth; /* queue bandwidth */
1373 u_int8_t priority; /* priority */
1374 u_int8_t local_flags; /* dynamic interface */
1375#define PFALTQ_FLAG_IF_REMOVED 0x01
1376
1377 u_int16_t qlimit; /* queue size limit */
1378 u_int16_t flags; /* misc flags */
1379 union {
1380 struct cbq_opts cbq_opts;
1381 struct priq_opts priq_opts;
1382 struct hfsc_opts hfsc_opts;
1383 } pq_u;
1384
1385 u_int32_t qid; /* return value */
1386};
1387
1388struct pf_divert {
1389 union {
1390 struct in_addr ipv4;
1391 struct in6_addr ipv6;
1392 } addr;
1393 u_int16_t port;
1394};
1395
1396#define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */
1397#define PFR_KENTRY_HIWAT 200000 /* Number of table entries */
1398
1399/*
1400 * ioctl parameter structures
1401 */
1402
1403struct pfioc_pooladdr {
1404 u_int32_t action;
1405 u_int32_t ticket;
1406 u_int32_t nr;
1407 u_int32_t r_num;
1408 u_int8_t r_action;
1409 u_int8_t r_last;
1410 u_int8_t af;
1411 char anchor[MAXPATHLEN];
1412 struct pf_pooladdr addr;
1413};
1414
1415struct pfioc_rule {
1416 u_int32_t action;
1417 u_int32_t ticket;
1418 u_int32_t pool_ticket;
1419 u_int32_t nr;
1420 char anchor[MAXPATHLEN];
1421 char anchor_call[MAXPATHLEN];
1422 struct pf_rule rule;
1423};
1424
1425struct pfioc_natlook {
1426 struct pf_addr saddr;
1427 struct pf_addr daddr;
1428 struct pf_addr rsaddr;
1429 struct pf_addr rdaddr;
1430 u_int16_t sport;
1431 u_int16_t dport;
1432 u_int16_t rsport;
1433 u_int16_t rdport;
1434 sa_family_t af;
1435 u_int8_t proto;
1436 u_int8_t direction;
1437};
1438
1439struct pfioc_state {
1440 struct pfsync_state state;
1441};
1442
1443struct pfioc_src_node_kill {
1444 sa_family_t psnk_af;
1445 struct pf_rule_addr psnk_src;
1446 struct pf_rule_addr psnk_dst;
1447 u_int psnk_killed;
1448};
1449
1450struct pfioc_state_kill {
1451 struct pf_state_cmp psk_pfcmp;
1452 sa_family_t psk_af;
1453 int psk_proto;
1454 struct pf_rule_addr psk_src;
1455 struct pf_rule_addr psk_dst;
1456 char psk_ifname[IFNAMSIZ];
1457 char psk_label[PF_RULE_LABEL_SIZE];
1458 u_int psk_killed;
1459};
1460
1461struct pfioc_states {
1462 int ps_len;
1463 union {
1464 caddr_t psu_buf;
1465 struct pfsync_state *psu_states;
1466 } ps_u;
1467#define ps_buf ps_u.psu_buf
1468#define ps_states ps_u.psu_states
1469};
1470
1471struct pfioc_src_nodes {
1472 int psn_len;
1473 union {
1474 caddr_t psu_buf;
1475 struct pf_src_node *psu_src_nodes;
1476 } psn_u;
1477#define psn_buf psn_u.psu_buf
1478#define psn_src_nodes psn_u.psu_src_nodes
1479};
1480
1481struct pfioc_if {
1482 char ifname[IFNAMSIZ];
1483};
1484
1485struct pfioc_tm {
1486 int timeout;
1487 int seconds;
1488};
1489
1490struct pfioc_limit {
1491 int index;
1492 unsigned limit;
1493};
1494
1495struct pfioc_altq {
1496 u_int32_t action;
1497 u_int32_t ticket;
1498 u_int32_t nr;
1499 struct pf_altq altq;
1500};
1501
1502struct pfioc_qstats {
1503 u_int32_t ticket;
1504 u_int32_t nr;
1505 void *buf;
1506 int nbytes;
1507 u_int8_t scheduler;
1508};
1509
1510struct pfioc_ruleset {
1511 u_int32_t nr;
1512 char path[MAXPATHLEN];
1513 char name[PF_ANCHOR_NAME_SIZE];
1514};
1515
1516#define PF_RULESET_ALTQ (PF_RULESET_MAX)
1517#define PF_RULESET_TABLE (PF_RULESET_MAX+1)
1518struct pfioc_trans {
1519 int size; /* number of elements */
1520 int esize; /* size of each element in bytes */
1521 struct pfioc_trans_e {
1522 int rs_num;
1523 char anchor[MAXPATHLEN];
1524 u_int32_t ticket;
1525 } *array;
1526};
1527
1528#define PFR_FLAG_ATOMIC 0x00000001 /* unused */
1529#define PFR_FLAG_DUMMY 0x00000002
1530#define PFR_FLAG_FEEDBACK 0x00000004
1531#define PFR_FLAG_CLSTATS 0x00000008
1532#define PFR_FLAG_ADDRSTOO 0x00000010
1533#define PFR_FLAG_REPLACE 0x00000020
1534#define PFR_FLAG_ALLRSETS 0x00000040
1535#define PFR_FLAG_ALLMASK 0x0000007F
1536#ifdef _KERNEL
1537#define PFR_FLAG_USERIOCTL 0x10000000
1538#endif
1539
1540struct pfioc_table {
1541 struct pfr_table pfrio_table;
1542 void *pfrio_buffer;
1543 int pfrio_esize;
1544 int pfrio_size;
1545 int pfrio_size2;
1546 int pfrio_nadd;
1547 int pfrio_ndel;
1548 int pfrio_nchange;
1549 int pfrio_flags;
1550 u_int32_t pfrio_ticket;
1551};
1552#define pfrio_exists pfrio_nadd
1553#define pfrio_nzero pfrio_nadd
1554#define pfrio_nmatch pfrio_nadd
1555#define pfrio_naddr pfrio_size2
1556#define pfrio_setflag pfrio_size2
1557#define pfrio_clrflag pfrio_nadd
1558
1559struct pfioc_iface {
1560 char pfiio_name[IFNAMSIZ];
1561 void *pfiio_buffer;
1562 int pfiio_esize;
1563 int pfiio_size;
1564 int pfiio_nzero;
1565 int pfiio_flags;
1566};
1567
1568
1569/*
1570 * ioctl operations
1571 */
1572
1573#define DIOCSTART _IO ('D', 1)
1574#define DIOCSTOP _IO ('D', 2)
1575#define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule)
1576#define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule)
1577#define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule)
1578/* XXX cut 8 - 17 */
1579#define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill)
1580#define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state)
1581#define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if)
1582#define DIOCGETSTATUS _IOWR('D', 21, struct pf_status)
1583#define DIOCCLRSTATUS _IO ('D', 22)
1584#define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook)
1585#define DIOCSETDEBUG _IOWR('D', 24, u_int32_t)
1586#define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states)
1587#define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule)
1588/* XXX cut 26 - 28 */
1589#define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm)
1590#define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm)
1591#define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state)
1592#define DIOCCLRRULECTRS _IO ('D', 38)
1593#define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit)
1594#define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit)
1595#define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill)
1596#define DIOCSTARTALTQ _IO ('D', 42)
1597#define DIOCSTOPALTQ _IO ('D', 43)
1598#define DIOCADDALTQ _IOWR('D', 45, struct pfioc_altq)
1599#define DIOCGETALTQS _IOWR('D', 47, struct pfioc_altq)
1600#define DIOCGETALTQ _IOWR('D', 48, struct pfioc_altq)
1601#define DIOCCHANGEALTQ _IOWR('D', 49, struct pfioc_altq)
1602#define DIOCGETQSTATS _IOWR('D', 50, struct pfioc_qstats)
1603#define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr)
1604#define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr)
1605#define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr)
1606#define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr)
1607#define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr)
1608/* XXX cut 55 - 57 */
1609#define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset)
1610#define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset)
1611#define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table)
1612#define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table)
1613#define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table)
1614#define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table)
1615#define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table)
1616#define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table)
1617#define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table)
1618#define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table)
1619#define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table)
1620#define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table)
1621#define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table)
1622#define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table)
1623#define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table)
1624#define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table)
1625#define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table)
1626#define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table)
1627#define DIOCOSFPFLUSH _IO('D', 78)
1628#define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl)
1629#define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl)
1630#define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans)
1631#define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans)
1632#define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans)
1633#define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes)
1634#define DIOCCLRSRCNODES _IO('D', 85)
1635#define DIOCSETHOSTID _IOWR('D', 86, u_int32_t)
1636#define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface)
1637#define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface)
1638#define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface)
1639#define DIOCKILLSRCNODES _IOWR('D', 91, struct pfioc_src_node_kill)
1640struct pf_ifspeed {
1641 char ifname[IFNAMSIZ];
1642 u_int32_t baudrate;
1643};
1644#define DIOCGIFSPEED _IOWR('D', 92, struct pf_ifspeed)
1645
1646#ifdef _KERNEL
1647struct pf_srchash {
1648 LIST_HEAD(, pf_src_node) nodes;
1649 struct mtx lock;
1650};
1651
1652struct pf_keyhash {
1653 LIST_HEAD(, pf_state_key) keys;
1654 struct mtx lock;
1655};
1656
1657struct pf_idhash {
1658 LIST_HEAD(, pf_state) states;
1659 struct mtx lock;
1660};
1661
1662#define PF_HASHSIZ (32768)
1663VNET_DECLARE(struct pf_keyhash *, pf_keyhash);
1664VNET_DECLARE(struct pf_idhash *, pf_idhash);
1665VNET_DECLARE(u_long, pf_hashmask);
1666#define V_pf_keyhash VNET(pf_keyhash)
1667#define V_pf_idhash VNET(pf_idhash)
1668#define V_pf_hashmask VNET(pf_hashmask)
1669VNET_DECLARE(struct pf_srchash *, pf_srchash);
1670VNET_DECLARE(u_long, pf_srchashmask);
1671#define V_pf_srchash VNET(pf_srchash)
1672#define V_pf_srchashmask VNET(pf_srchashmask)
1673
1674#define PF_IDHASH(s) (be64toh((s)->id) % (V_pf_hashmask + 1))
1675
1676VNET_DECLARE(void *, pf_swi_cookie);
1677#define V_pf_swi_cookie VNET(pf_swi_cookie)
1678
1679VNET_DECLARE(uint64_t, pf_stateid[MAXCPU]);
1680#define V_pf_stateid VNET(pf_stateid)
1681
1682TAILQ_HEAD(pf_altqqueue, pf_altq);
1683VNET_DECLARE(struct pf_altqqueue, pf_altqs[2]);
1684#define V_pf_altqs VNET(pf_altqs)
1685VNET_DECLARE(struct pf_palist, pf_pabuf);
1686#define V_pf_pabuf VNET(pf_pabuf)
1687
1688VNET_DECLARE(u_int32_t, ticket_altqs_active);
1689#define V_ticket_altqs_active VNET(ticket_altqs_active)
1690VNET_DECLARE(u_int32_t, ticket_altqs_inactive);
1691#define V_ticket_altqs_inactive VNET(ticket_altqs_inactive)
1692VNET_DECLARE(int, altqs_inactive_open);
1693#define V_altqs_inactive_open VNET(altqs_inactive_open)
1694VNET_DECLARE(u_int32_t, ticket_pabuf);
1695#define V_ticket_pabuf VNET(ticket_pabuf)
1696VNET_DECLARE(struct pf_altqqueue *, pf_altqs_active);
1697#define V_pf_altqs_active VNET(pf_altqs_active)
1698VNET_DECLARE(struct pf_altqqueue *, pf_altqs_inactive);
1699#define V_pf_altqs_inactive VNET(pf_altqs_inactive)
1700
1701VNET_DECLARE(struct pf_rulequeue, pf_unlinked_rules);
1702#define V_pf_unlinked_rules VNET(pf_unlinked_rules)
1703
1704void pf_initialize(void);
1705void pf_cleanup(void);
1706
1707struct pf_mtag *pf_get_mtag(struct mbuf *);
1708
1709extern void pf_calc_skip_steps(struct pf_rulequeue *);
1710#ifdef ALTQ
1711extern void pf_altq_ifnet_event(struct ifnet *, int);
1712#endif
1713VNET_DECLARE(uma_zone_t, pf_state_z);
1714#define V_pf_state_z VNET(pf_state_z)
1715VNET_DECLARE(uma_zone_t, pf_state_key_z);
1716#define V_pf_state_key_z VNET(pf_state_key_z)
1717VNET_DECLARE(uma_zone_t, pf_state_scrub_z);
1718#define V_pf_state_scrub_z VNET(pf_state_scrub_z)
1719
1720extern void pf_purge_thread(void *);
1721extern void pf_intr(void *);
1722extern void pf_purge_expired_src_nodes(void);
1723
1724extern int pf_unlink_state(struct pf_state *, u_int);
1725#define PF_ENTER_LOCKED 0x00000001
1726#define PF_RETURN_LOCKED 0x00000002
1727extern int pf_state_insert(struct pfi_kif *,
1728 struct pf_state_key *,
1729 struct pf_state_key *,
1730 struct pf_state *);
1731extern void pf_free_state(struct pf_state *);
1732
1733static __inline void
1734pf_ref_state(struct pf_state *s)
1735{
1736
1737 refcount_acquire(&s->refs);
1738}
1739
1740static __inline int
1741pf_release_state(struct pf_state *s)
1742{
1743
1744 if (refcount_release(&s->refs)) {
1745 pf_free_state(s);
1746 return (1);
1747 } else
1748 return (0);
1749}
1750
1751extern struct pf_state *pf_find_state_byid(uint64_t, uint32_t);
1752extern struct pf_state *pf_find_state_all(struct pf_state_key_cmp *,
1753 u_int, int *);
1754struct pf_src_node *pf_find_src_node(struct pf_addr *, struct pf_rule *,
1755 sa_family_t, int);
1756extern void pf_print_state(struct pf_state *);
1757extern void pf_print_flags(u_int8_t);
1758extern u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t,
1759 u_int8_t);
1760
1761VNET_DECLARE(struct ifnet *, sync_ifp);
1762#define V_sync_ifp VNET(sync_ifp);
1763VNET_DECLARE(struct pf_rule, pf_default_rule);
1764#define V_pf_default_rule VNET(pf_default_rule)
1765extern void pf_addrcpy(struct pf_addr *, struct pf_addr *,
1766 u_int8_t);
1767void pf_free_rule(struct pf_rule *);
1768
1769#ifdef INET
1770int pf_test(int, struct ifnet *, struct mbuf **, struct inpcb *);
1771#endif /* INET */
1772
1773#ifdef INET6
1774int pf_test6(int, struct ifnet *, struct mbuf **, struct inpcb *);
1775void pf_poolmask(struct pf_addr *, struct pf_addr*,
1776 struct pf_addr *, struct pf_addr *, u_int8_t);
1777void pf_addr_inc(struct pf_addr *, sa_family_t);
1778#endif /* INET6 */
1779
1780u_int32_t pf_new_isn(struct pf_state *);
1781void *pf_pull_hdr(struct mbuf *, int, void *, int, u_short *, u_short *,
1782 sa_family_t);
1783void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t);
1784void pf_send_deferred_syn(struct pf_state *);
1785int pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *,
1786 struct pf_addr *, sa_family_t);
1787int pf_match_addr_range(struct pf_addr *, struct pf_addr *,
1788 struct pf_addr *, sa_family_t);
1789int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t);
1790
1791void pf_normalize_init(void);
1792void pf_normalize_cleanup(void);
1793int pf_normalize_ip(struct mbuf **, int, struct pfi_kif *, u_short *,
1794 struct pf_pdesc *);
1795int pf_normalize_ip6(struct mbuf **, int, struct pfi_kif *, u_short *,
1796 struct pf_pdesc *);
1797int pf_normalize_tcp(int, struct pfi_kif *, struct mbuf *, int, int, void *,
1798 struct pf_pdesc *);
1799void pf_normalize_tcp_cleanup(struct pf_state *);
1800int pf_normalize_tcp_init(struct mbuf *, int, struct pf_pdesc *,
1801 struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *);
1802int pf_normalize_tcp_stateful(struct mbuf *, int, struct pf_pdesc *,
1803 u_short *, struct tcphdr *, struct pf_state *,
1804 struct pf_state_peer *, struct pf_state_peer *, int *);
1805u_int32_t
1806 pf_state_expires(const struct pf_state *);
1807void pf_purge_expired_fragments(void);
1808int pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kif *,
1809 int);
1810int pf_socket_lookup(int, struct pf_pdesc *, struct mbuf *);
1811struct pf_state_key *pf_alloc_state_key(int);
1812void pfr_initialize(void);
1813void pfr_cleanup(void);
1814int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t);
1815void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t,
1816 u_int64_t, int, int, int);
1817int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, sa_family_t);
1818void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *);
1819struct pfr_ktable *
1820 pfr_attach_table(struct pf_ruleset *, char *);
1821void pfr_detach_table(struct pfr_ktable *);
1822int pfr_clr_tables(struct pfr_table *, int *, int);
1823int pfr_add_tables(struct pfr_table *, int, int *, int);
1824int pfr_del_tables(struct pfr_table *, int, int *, int);
1825int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int);
1826int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int);
1827int pfr_clr_tstats(struct pfr_table *, int, int *, int);
1828int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int);
1829int pfr_clr_addrs(struct pfr_table *, int *, int);
1830int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *, long);
1831int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
1832 int);
1833int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
1834 int);
1835int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
1836 int *, int *, int *, int, u_int32_t);
1837int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int);
1838int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int);
1839int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *,
1840 int);
1841int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
1842 int);
1843int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int);
1844int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int);
1845int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int);
1846int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *,
1847 int *, u_int32_t, int);
1848
1849MALLOC_DECLARE(PFI_MTYPE);
1850VNET_DECLARE(struct pfi_kif *, pfi_all);
1851#define V_pfi_all VNET(pfi_all)
1852
1853void pfi_initialize(void);
1854void pfi_cleanup(void);
1855void pfi_kif_ref(struct pfi_kif *);
1856void pfi_kif_unref(struct pfi_kif *);
1857struct pfi_kif *pfi_kif_find(const char *);
1858struct pfi_kif *pfi_kif_attach(struct pfi_kif *, const char *);
1859int pfi_kif_match(struct pfi_kif *, struct pfi_kif *);
1860void pfi_kif_purge(void);
1861int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *,
1862 sa_family_t);
1863int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t);
1864void pfi_dynaddr_remove(struct pfi_dynaddr *);
1865void pfi_dynaddr_copyout(struct pf_addr_wrap *);
1866void pfi_update_status(const char *, struct pf_status *);
1867void pfi_get_ifaces(const char *, struct pfi_kif *, int *);
1868int pfi_set_flags(const char *, int);
1869int pfi_clear_flags(const char *, int);
1870
1871int pf_match_tag(struct mbuf *, struct pf_rule *, int *, int);
1872int pf_tag_packet(struct mbuf *, struct pf_pdesc *, int);
1873void pf_qid2qname(u_int32_t, char *);
1874
1875VNET_DECLARE(struct pf_status, pf_status);
1876#define V_pf_status VNET(pf_status)
1877
1878struct pf_limit {
1879 uma_zone_t zone;
1880 u_int limit;
1881};
1882VNET_DECLARE(struct pf_limit, pf_limits[PF_LIMIT_MAX]);
1883#define V_pf_limits VNET(pf_limits)
1884
1885#endif /* _KERNEL */
1886
1887#ifdef _KERNEL
1888VNET_DECLARE(struct pf_anchor_global, pf_anchors);
1889#define V_pf_anchors VNET(pf_anchors)
1890VNET_DECLARE(struct pf_anchor, pf_main_anchor);
1891#define V_pf_main_anchor VNET(pf_main_anchor)
1892#define pf_main_ruleset V_pf_main_anchor.ruleset
1893#endif
1894
1895/* these ruleset functions can be linked into userland programs (pfctl) */
1896int pf_get_ruleset_number(u_int8_t);
1897void pf_init_ruleset(struct pf_ruleset *);
1898int pf_anchor_setup(struct pf_rule *,
1899 const struct pf_ruleset *, const char *);
1900int pf_anchor_copyout(const struct pf_ruleset *,
1901 const struct pf_rule *, struct pfioc_rule *);
1902void pf_anchor_remove(struct pf_rule *);
1903void pf_remove_if_empty_ruleset(struct pf_ruleset *);
1904struct pf_ruleset *pf_find_ruleset(const char *);
1905struct pf_ruleset *pf_find_or_create_ruleset(const char *);
1906void pf_rs_initialize(void);
1907
1908/* The fingerprint functions can be linked into userland programs (tcpdump) */
1909int pf_osfp_add(struct pf_osfp_ioctl *);
1910#ifdef _KERNEL
1911struct pf_osfp_enlist *
1912 pf_osfp_fingerprint(struct pf_pdesc *, struct mbuf *, int,
1913 const struct tcphdr *);
1914#endif /* _KERNEL */
1915void pf_osfp_flush(void);
1916int pf_osfp_get(struct pf_osfp_ioctl *);
1917int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t);
1918
1919#ifdef _KERNEL
1920void pf_print_host(struct pf_addr *, u_int16_t, u_int8_t);
1921
1922void pf_step_into_anchor(struct pf_anchor_stackframe *, int *,
1923 struct pf_ruleset **, int, struct pf_rule **,
1924 struct pf_rule **, int *);
1925int pf_step_out_of_anchor(struct pf_anchor_stackframe *, int *,
1926 struct pf_ruleset **, int, struct pf_rule **,
1927 struct pf_rule **, int *);
1928
1929int pf_map_addr(u_int8_t, struct pf_rule *,
1930 struct pf_addr *, struct pf_addr *,
1931 struct pf_addr *, struct pf_src_node **);
1932struct pf_rule *pf_get_translation(struct pf_pdesc *, struct mbuf *,
1933 int, int, struct pfi_kif *, struct pf_src_node **,
1934 struct pf_state_key **, struct pf_state_key **,
1935 struct pf_addr *, struct pf_addr *,
1936 uint16_t, uint16_t, struct pf_anchor_stackframe *);
1937
1938struct pf_state_key *pf_state_key_setup(struct pf_pdesc *, struct pf_addr *,
1939 struct pf_addr *, u_int16_t, u_int16_t);
1940struct pf_state_key *pf_state_key_clone(struct pf_state_key *);
1941#endif /* _KERNEL */
1942
1943#endif /* _NET_PFVAR_H_ */
| 82
83/* PFTM default values */
84#define PFTM_TCP_FIRST_PACKET_VAL 120 /* First TCP packet */
85#define PFTM_TCP_OPENING_VAL 30 /* No response yet */
86#define PFTM_TCP_ESTABLISHED_VAL 24*60*60/* Established */
87#define PFTM_TCP_CLOSING_VAL 15 * 60 /* Half closed */
88#define PFTM_TCP_FIN_WAIT_VAL 45 /* Got both FINs */
89#define PFTM_TCP_CLOSED_VAL 90 /* Got a RST */
90#define PFTM_UDP_FIRST_PACKET_VAL 60 /* First UDP packet */
91#define PFTM_UDP_SINGLE_VAL 30 /* Unidirectional */
92#define PFTM_UDP_MULTIPLE_VAL 60 /* Bidirectional */
93#define PFTM_ICMP_FIRST_PACKET_VAL 20 /* First ICMP packet */
94#define PFTM_ICMP_ERROR_REPLY_VAL 10 /* Got error response */
95#define PFTM_OTHER_FIRST_PACKET_VAL 60 /* First packet */
96#define PFTM_OTHER_SINGLE_VAL 30 /* Unidirectional */
97#define PFTM_OTHER_MULTIPLE_VAL 60 /* Bidirectional */
98#define PFTM_FRAG_VAL 30 /* Fragment expire */
99#define PFTM_INTERVAL_VAL 10 /* Expire interval */
100#define PFTM_SRC_NODE_VAL 0 /* Source tracking */
101#define PFTM_TS_DIFF_VAL 30 /* Allowed TS diff */
102
103enum { PF_NOPFROUTE, PF_FASTROUTE, PF_ROUTETO, PF_DUPTO, PF_REPLYTO };
104enum { PF_LIMIT_STATES, PF_LIMIT_SRC_NODES, PF_LIMIT_FRAGS,
105 PF_LIMIT_TABLE_ENTRIES, PF_LIMIT_MAX };
106#define PF_POOL_IDMASK 0x0f
107enum { PF_POOL_NONE, PF_POOL_BITMASK, PF_POOL_RANDOM,
108 PF_POOL_SRCHASH, PF_POOL_ROUNDROBIN };
109enum { PF_ADDR_ADDRMASK, PF_ADDR_NOROUTE, PF_ADDR_DYNIFTL,
110 PF_ADDR_TABLE, PF_ADDR_URPFFAILED,
111 PF_ADDR_RANGE };
112#define PF_POOL_TYPEMASK 0x0f
113#define PF_POOL_STICKYADDR 0x20
114#define PF_WSCALE_FLAG 0x80
115#define PF_WSCALE_MASK 0x0f
116
117#define PF_LOG 0x01
118#define PF_LOG_ALL 0x02
119#define PF_LOG_SOCKET_LOOKUP 0x04
120
121struct pf_addr {
122 union {
123 struct in_addr v4;
124 struct in6_addr v6;
125 u_int8_t addr8[16];
126 u_int16_t addr16[8];
127 u_int32_t addr32[4];
128 } pfa; /* 128-bit address */
129#define v4 pfa.v4
130#define v6 pfa.v6
131#define addr8 pfa.addr8
132#define addr16 pfa.addr16
133#define addr32 pfa.addr32
134};
135
136#define PF_TABLE_NAME_SIZE 32
137
138#define PFI_AFLAG_NETWORK 0x01
139#define PFI_AFLAG_BROADCAST 0x02
140#define PFI_AFLAG_PEER 0x04
141#define PFI_AFLAG_MODEMASK 0x07
142#define PFI_AFLAG_NOALIAS 0x08
143
144struct pf_addr_wrap {
145 union {
146 struct {
147 struct pf_addr addr;
148 struct pf_addr mask;
149 } a;
150 char ifname[IFNAMSIZ];
151 char tblname[PF_TABLE_NAME_SIZE];
152 } v;
153 union {
154 struct pfi_dynaddr *dyn;
155 struct pfr_ktable *tbl;
156 int dyncnt;
157 int tblcnt;
158 } p;
159 u_int8_t type; /* PF_ADDR_* */
160 u_int8_t iflags; /* PFI_AFLAG_* */
161};
162
163#ifdef _KERNEL
164
165struct pfi_dynaddr {
166 TAILQ_ENTRY(pfi_dynaddr) entry;
167 struct pf_addr pfid_addr4;
168 struct pf_addr pfid_mask4;
169 struct pf_addr pfid_addr6;
170 struct pf_addr pfid_mask6;
171 struct pfr_ktable *pfid_kt;
172 struct pfi_kif *pfid_kif;
173 int pfid_net; /* mask or 128 */
174 int pfid_acnt4; /* address count IPv4 */
175 int pfid_acnt6; /* address count IPv6 */
176 sa_family_t pfid_af; /* rule af */
177 u_int8_t pfid_iflags; /* PFI_AFLAG_* */
178};
179
180/*
181 * Address manipulation macros
182 */
183#define HTONL(x) (x) = htonl((__uint32_t)(x))
184#define HTONS(x) (x) = htons((__uint16_t)(x))
185#define NTOHL(x) (x) = ntohl((__uint32_t)(x))
186#define NTOHS(x) (x) = ntohs((__uint16_t)(x))
187
188#define PF_NAME "pf"
189
190#define PF_HASHROW_ASSERT(h) mtx_assert(&(h)->lock, MA_OWNED)
191#define PF_HASHROW_LOCK(h) mtx_lock(&(h)->lock)
192#define PF_HASHROW_UNLOCK(h) mtx_unlock(&(h)->lock)
193
194#define PF_STATE_LOCK(s) \
195 do { \
196 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(s)]; \
197 PF_HASHROW_LOCK(_ih); \
198 } while (0)
199
200#define PF_STATE_UNLOCK(s) \
201 do { \
202 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH((s))]; \
203 PF_HASHROW_UNLOCK(_ih); \
204 } while (0)
205
206#ifdef INVARIANTS
207#define PF_STATE_LOCK_ASSERT(s) \
208 do { \
209 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(s)]; \
210 PF_HASHROW_ASSERT(_ih); \
211 } while (0)
212#else /* !INVARIANTS */
213#define PF_STATE_LOCK_ASSERT(s) do {} while (0)
214#endif /* INVARIANTS */
215
216extern struct mtx pf_unlnkdrules_mtx;
217#define PF_UNLNKDRULES_LOCK() mtx_lock(&pf_unlnkdrules_mtx)
218#define PF_UNLNKDRULES_UNLOCK() mtx_unlock(&pf_unlnkdrules_mtx)
219
220extern struct rwlock pf_rules_lock;
221#define PF_RULES_RLOCK() rw_rlock(&pf_rules_lock)
222#define PF_RULES_RUNLOCK() rw_runlock(&pf_rules_lock)
223#define PF_RULES_WLOCK() rw_wlock(&pf_rules_lock)
224#define PF_RULES_WUNLOCK() rw_wunlock(&pf_rules_lock)
225#define PF_RULES_ASSERT() rw_assert(&pf_rules_lock, RA_LOCKED)
226#define PF_RULES_RASSERT() rw_assert(&pf_rules_lock, RA_RLOCKED)
227#define PF_RULES_WASSERT() rw_assert(&pf_rules_lock, RA_WLOCKED)
228
229#define PF_MODVER 1
230#define PFLOG_MODVER 1
231#define PFSYNC_MODVER 1
232
233#define PFLOG_MINVER 1
234#define PFLOG_PREFVER PFLOG_MODVER
235#define PFLOG_MAXVER 1
236#define PFSYNC_MINVER 1
237#define PFSYNC_PREFVER PFSYNC_MODVER
238#define PFSYNC_MAXVER 1
239
240#ifdef INET
241#ifndef INET6
242#define PF_INET_ONLY
243#endif /* ! INET6 */
244#endif /* INET */
245
246#ifdef INET6
247#ifndef INET
248#define PF_INET6_ONLY
249#endif /* ! INET */
250#endif /* INET6 */
251
252#ifdef INET
253#ifdef INET6
254#define PF_INET_INET6
255#endif /* INET6 */
256#endif /* INET */
257
258#else
259
260#define PF_INET_INET6
261
262#endif /* _KERNEL */
263
264/* Both IPv4 and IPv6 */
265#ifdef PF_INET_INET6
266
267#define PF_AEQ(a, b, c) \
268 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \
269 ((a)->addr32[3] == (b)->addr32[3] && \
270 (a)->addr32[2] == (b)->addr32[2] && \
271 (a)->addr32[1] == (b)->addr32[1] && \
272 (a)->addr32[0] == (b)->addr32[0])) \
273
274#define PF_ANEQ(a, b, c) \
275 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \
276 ((a)->addr32[3] != (b)->addr32[3] || \
277 (a)->addr32[2] != (b)->addr32[2] || \
278 (a)->addr32[1] != (b)->addr32[1] || \
279 (a)->addr32[0] != (b)->addr32[0])) \
280
281#define PF_AZERO(a, c) \
282 ((c == AF_INET && !(a)->addr32[0]) || \
283 (!(a)->addr32[0] && !(a)->addr32[1] && \
284 !(a)->addr32[2] && !(a)->addr32[3] )) \
285
286#define PF_MATCHA(n, a, m, b, f) \
287 pf_match_addr(n, a, m, b, f)
288
289#define PF_ACPY(a, b, f) \
290 pf_addrcpy(a, b, f)
291
292#define PF_AINC(a, f) \
293 pf_addr_inc(a, f)
294
295#define PF_POOLMASK(a, b, c, d, f) \
296 pf_poolmask(a, b, c, d, f)
297
298#else
299
300/* Just IPv6 */
301
302#ifdef PF_INET6_ONLY
303
304#define PF_AEQ(a, b, c) \
305 ((a)->addr32[3] == (b)->addr32[3] && \
306 (a)->addr32[2] == (b)->addr32[2] && \
307 (a)->addr32[1] == (b)->addr32[1] && \
308 (a)->addr32[0] == (b)->addr32[0]) \
309
310#define PF_ANEQ(a, b, c) \
311 ((a)->addr32[3] != (b)->addr32[3] || \
312 (a)->addr32[2] != (b)->addr32[2] || \
313 (a)->addr32[1] != (b)->addr32[1] || \
314 (a)->addr32[0] != (b)->addr32[0]) \
315
316#define PF_AZERO(a, c) \
317 (!(a)->addr32[0] && \
318 !(a)->addr32[1] && \
319 !(a)->addr32[2] && \
320 !(a)->addr32[3] ) \
321
322#define PF_MATCHA(n, a, m, b, f) \
323 pf_match_addr(n, a, m, b, f)
324
325#define PF_ACPY(a, b, f) \
326 pf_addrcpy(a, b, f)
327
328#define PF_AINC(a, f) \
329 pf_addr_inc(a, f)
330
331#define PF_POOLMASK(a, b, c, d, f) \
332 pf_poolmask(a, b, c, d, f)
333
334#else
335
336/* Just IPv4 */
337#ifdef PF_INET_ONLY
338
339#define PF_AEQ(a, b, c) \
340 ((a)->addr32[0] == (b)->addr32[0])
341
342#define PF_ANEQ(a, b, c) \
343 ((a)->addr32[0] != (b)->addr32[0])
344
345#define PF_AZERO(a, c) \
346 (!(a)->addr32[0])
347
348#define PF_MATCHA(n, a, m, b, f) \
349 pf_match_addr(n, a, m, b, f)
350
351#define PF_ACPY(a, b, f) \
352 (a)->v4.s_addr = (b)->v4.s_addr
353
354#define PF_AINC(a, f) \
355 do { \
356 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \
357 } while (0)
358
359#define PF_POOLMASK(a, b, c, d, f) \
360 do { \
361 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \
362 (((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \
363 } while (0)
364
365#endif /* PF_INET_ONLY */
366#endif /* PF_INET6_ONLY */
367#endif /* PF_INET_INET6 */
368
369/*
370 * XXX callers not FIB-aware in our version of pf yet.
371 * OpenBSD fixed it later it seems, 2010/05/07 13:33:16 claudio.
372 */
373#define PF_MISMATCHAW(aw, x, af, neg, ifp, rtid) \
374 ( \
375 (((aw)->type == PF_ADDR_NOROUTE && \
376 pf_routable((x), (af), NULL, (rtid))) || \
377 (((aw)->type == PF_ADDR_URPFFAILED && (ifp) != NULL && \
378 pf_routable((x), (af), (ifp), (rtid))) || \
379 ((aw)->type == PF_ADDR_TABLE && \
380 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \
381 ((aw)->type == PF_ADDR_DYNIFTL && \
382 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \
383 ((aw)->type == PF_ADDR_RANGE && \
384 !pf_match_addr_range(&(aw)->v.a.addr, \
385 &(aw)->v.a.mask, (x), (af))) || \
386 ((aw)->type == PF_ADDR_ADDRMASK && \
387 !PF_AZERO(&(aw)->v.a.mask, (af)) && \
388 !PF_MATCHA(0, &(aw)->v.a.addr, \
389 &(aw)->v.a.mask, (x), (af))))) != \
390 (neg) \
391 )
392
393
394struct pf_rule_uid {
395 uid_t uid[2];
396 u_int8_t op;
397};
398
399struct pf_rule_gid {
400 uid_t gid[2];
401 u_int8_t op;
402};
403
404struct pf_rule_addr {
405 struct pf_addr_wrap addr;
406 u_int16_t port[2];
407 u_int8_t neg;
408 u_int8_t port_op;
409};
410
411struct pf_pooladdr {
412 struct pf_addr_wrap addr;
413 TAILQ_ENTRY(pf_pooladdr) entries;
414 char ifname[IFNAMSIZ];
415 struct pfi_kif *kif;
416};
417
418TAILQ_HEAD(pf_palist, pf_pooladdr);
419
420struct pf_poolhashkey {
421 union {
422 u_int8_t key8[16];
423 u_int16_t key16[8];
424 u_int32_t key32[4];
425 } pfk; /* 128-bit hash key */
426#define key8 pfk.key8
427#define key16 pfk.key16
428#define key32 pfk.key32
429};
430
431struct pf_pool {
432 struct pf_palist list;
433 struct pf_pooladdr *cur;
434 struct pf_poolhashkey key;
435 struct pf_addr counter;
436 int tblidx;
437 u_int16_t proxy_port[2];
438 u_int8_t opts;
439};
440
441
442/* A packed Operating System description for fingerprinting */
443typedef u_int32_t pf_osfp_t;
444#define PF_OSFP_ANY ((pf_osfp_t)0)
445#define PF_OSFP_UNKNOWN ((pf_osfp_t)-1)
446#define PF_OSFP_NOMATCH ((pf_osfp_t)-2)
447
448struct pf_osfp_entry {
449 SLIST_ENTRY(pf_osfp_entry) fp_entry;
450 pf_osfp_t fp_os;
451 int fp_enflags;
452#define PF_OSFP_EXPANDED 0x001 /* expanded entry */
453#define PF_OSFP_GENERIC 0x002 /* generic signature */
454#define PF_OSFP_NODETAIL 0x004 /* no p0f details */
455#define PF_OSFP_LEN 32
456 char fp_class_nm[PF_OSFP_LEN];
457 char fp_version_nm[PF_OSFP_LEN];
458 char fp_subtype_nm[PF_OSFP_LEN];
459};
460#define PF_OSFP_ENTRY_EQ(a, b) \
461 ((a)->fp_os == (b)->fp_os && \
462 memcmp((a)->fp_class_nm, (b)->fp_class_nm, PF_OSFP_LEN) == 0 && \
463 memcmp((a)->fp_version_nm, (b)->fp_version_nm, PF_OSFP_LEN) == 0 && \
464 memcmp((a)->fp_subtype_nm, (b)->fp_subtype_nm, PF_OSFP_LEN) == 0)
465
466/* handle pf_osfp_t packing */
467#define _FP_RESERVED_BIT 1 /* For the special negative #defines */
468#define _FP_UNUSED_BITS 1
469#define _FP_CLASS_BITS 10 /* OS Class (Windows, Linux) */
470#define _FP_VERSION_BITS 10 /* OS version (95, 98, NT, 2.4.54, 3.2) */
471#define _FP_SUBTYPE_BITS 10 /* patch level (NT SP4, SP3, ECN patch) */
472#define PF_OSFP_UNPACK(osfp, class, version, subtype) do { \
473 (class) = ((osfp) >> (_FP_VERSION_BITS+_FP_SUBTYPE_BITS)) & \
474 ((1 << _FP_CLASS_BITS) - 1); \
475 (version) = ((osfp) >> _FP_SUBTYPE_BITS) & \
476 ((1 << _FP_VERSION_BITS) - 1);\
477 (subtype) = (osfp) & ((1 << _FP_SUBTYPE_BITS) - 1); \
478} while(0)
479#define PF_OSFP_PACK(osfp, class, version, subtype) do { \
480 (osfp) = ((class) & ((1 << _FP_CLASS_BITS) - 1)) << (_FP_VERSION_BITS \
481 + _FP_SUBTYPE_BITS); \
482 (osfp) |= ((version) & ((1 << _FP_VERSION_BITS) - 1)) << \
483 _FP_SUBTYPE_BITS; \
484 (osfp) |= (subtype) & ((1 << _FP_SUBTYPE_BITS) - 1); \
485} while(0)
486
487/* the fingerprint of an OSes TCP SYN packet */
488typedef u_int64_t pf_tcpopts_t;
489struct pf_os_fingerprint {
490 SLIST_HEAD(pf_osfp_enlist, pf_osfp_entry) fp_oses; /* list of matches */
491 pf_tcpopts_t fp_tcpopts; /* packed TCP options */
492 u_int16_t fp_wsize; /* TCP window size */
493 u_int16_t fp_psize; /* ip->ip_len */
494 u_int16_t fp_mss; /* TCP MSS */
495 u_int16_t fp_flags;
496#define PF_OSFP_WSIZE_MOD 0x0001 /* Window modulus */
497#define PF_OSFP_WSIZE_DC 0x0002 /* Window don't care */
498#define PF_OSFP_WSIZE_MSS 0x0004 /* Window multiple of MSS */
499#define PF_OSFP_WSIZE_MTU 0x0008 /* Window multiple of MTU */
500#define PF_OSFP_PSIZE_MOD 0x0010 /* packet size modulus */
501#define PF_OSFP_PSIZE_DC 0x0020 /* packet size don't care */
502#define PF_OSFP_WSCALE 0x0040 /* TCP window scaling */
503#define PF_OSFP_WSCALE_MOD 0x0080 /* TCP window scale modulus */
504#define PF_OSFP_WSCALE_DC 0x0100 /* TCP window scale dont-care */
505#define PF_OSFP_MSS 0x0200 /* TCP MSS */
506#define PF_OSFP_MSS_MOD 0x0400 /* TCP MSS modulus */
507#define PF_OSFP_MSS_DC 0x0800 /* TCP MSS dont-care */
508#define PF_OSFP_DF 0x1000 /* IPv4 don't fragment bit */
509#define PF_OSFP_TS0 0x2000 /* Zero timestamp */
510#define PF_OSFP_INET6 0x4000 /* IPv6 */
511 u_int8_t fp_optcnt; /* TCP option count */
512 u_int8_t fp_wscale; /* TCP window scaling */
513 u_int8_t fp_ttl; /* IPv4 TTL */
514#define PF_OSFP_MAXTTL_OFFSET 40
515/* TCP options packing */
516#define PF_OSFP_TCPOPT_NOP 0x0 /* TCP NOP option */
517#define PF_OSFP_TCPOPT_WSCALE 0x1 /* TCP window scaling option */
518#define PF_OSFP_TCPOPT_MSS 0x2 /* TCP max segment size opt */
519#define PF_OSFP_TCPOPT_SACK 0x3 /* TCP SACK OK option */
520#define PF_OSFP_TCPOPT_TS 0x4 /* TCP timestamp option */
521#define PF_OSFP_TCPOPT_BITS 3 /* bits used by each option */
522#define PF_OSFP_MAX_OPTS \
523 (sizeof(((struct pf_os_fingerprint *)0)->fp_tcpopts) * 8) \
524 / PF_OSFP_TCPOPT_BITS
525
526 SLIST_ENTRY(pf_os_fingerprint) fp_next;
527};
528
529struct pf_osfp_ioctl {
530 struct pf_osfp_entry fp_os;
531 pf_tcpopts_t fp_tcpopts; /* packed TCP options */
532 u_int16_t fp_wsize; /* TCP window size */
533 u_int16_t fp_psize; /* ip->ip_len */
534 u_int16_t fp_mss; /* TCP MSS */
535 u_int16_t fp_flags;
536 u_int8_t fp_optcnt; /* TCP option count */
537 u_int8_t fp_wscale; /* TCP window scaling */
538 u_int8_t fp_ttl; /* IPv4 TTL */
539
540 int fp_getnum; /* DIOCOSFPGET number */
541};
542
543
544union pf_rule_ptr {
545 struct pf_rule *ptr;
546 u_int32_t nr;
547};
548
549#define PF_ANCHOR_NAME_SIZE 64
550
551struct pf_rule {
552 struct pf_rule_addr src;
553 struct pf_rule_addr dst;
554#define PF_SKIP_IFP 0
555#define PF_SKIP_DIR 1
556#define PF_SKIP_AF 2
557#define PF_SKIP_PROTO 3
558#define PF_SKIP_SRC_ADDR 4
559#define PF_SKIP_SRC_PORT 5
560#define PF_SKIP_DST_ADDR 6
561#define PF_SKIP_DST_PORT 7
562#define PF_SKIP_COUNT 8
563 union pf_rule_ptr skip[PF_SKIP_COUNT];
564#define PF_RULE_LABEL_SIZE 64
565 char label[PF_RULE_LABEL_SIZE];
566#define PF_QNAME_SIZE 64
567 char ifname[IFNAMSIZ];
568 char qname[PF_QNAME_SIZE];
569 char pqname[PF_QNAME_SIZE];
570#define PF_TAG_NAME_SIZE 64
571 char tagname[PF_TAG_NAME_SIZE];
572 char match_tagname[PF_TAG_NAME_SIZE];
573
574 char overload_tblname[PF_TABLE_NAME_SIZE];
575
576 TAILQ_ENTRY(pf_rule) entries;
577 struct pf_pool rpool;
578
579 u_int64_t evaluations;
580 u_int64_t packets[2];
581 u_int64_t bytes[2];
582
583 struct pfi_kif *kif;
584 struct pf_anchor *anchor;
585 struct pfr_ktable *overload_tbl;
586
587 pf_osfp_t os_fingerprint;
588
589 int rtableid;
590 u_int32_t timeout[PFTM_MAX];
591 u_int32_t states_cur;
592 u_int32_t states_tot;
593 u_int32_t max_states;
594 u_int32_t src_nodes;
595 u_int32_t max_src_nodes;
596 u_int32_t max_src_states;
597 u_int32_t spare1; /* netgraph */
598 u_int32_t max_src_conn;
599 struct {
600 u_int32_t limit;
601 u_int32_t seconds;
602 } max_src_conn_rate;
603 u_int32_t qid;
604 u_int32_t pqid;
605 u_int32_t rt_listid;
606 u_int32_t nr;
607 u_int32_t prob;
608 uid_t cuid;
609 pid_t cpid;
610
611 u_int16_t return_icmp;
612 u_int16_t return_icmp6;
613 u_int16_t max_mss;
614 u_int16_t tag;
615 u_int16_t match_tag;
616 u_int16_t spare2; /* netgraph */
617
618 struct pf_rule_uid uid;
619 struct pf_rule_gid gid;
620
621 u_int32_t rule_flag;
622 u_int8_t action;
623 u_int8_t direction;
624 u_int8_t log;
625 u_int8_t logif;
626 u_int8_t quick;
627 u_int8_t ifnot;
628 u_int8_t match_tag_not;
629 u_int8_t natpass;
630
631#define PF_STATE_NORMAL 0x1
632#define PF_STATE_MODULATE 0x2
633#define PF_STATE_SYNPROXY 0x3
634 u_int8_t keep_state;
635 sa_family_t af;
636 u_int8_t proto;
637 u_int8_t type;
638 u_int8_t code;
639 u_int8_t flags;
640 u_int8_t flagset;
641 u_int8_t min_ttl;
642 u_int8_t allow_opts;
643 u_int8_t rt;
644 u_int8_t return_ttl;
645 u_int8_t tos;
646 u_int8_t set_tos;
647 u_int8_t anchor_relative;
648 u_int8_t anchor_wildcard;
649
650#define PF_FLUSH 0x01
651#define PF_FLUSH_GLOBAL 0x02
652 u_int8_t flush;
653
654 struct {
655 struct pf_addr addr;
656 u_int16_t port;
657 } divert;
658};
659
660/* rule flags */
661#define PFRULE_DROP 0x0000
662#define PFRULE_RETURNRST 0x0001
663#define PFRULE_FRAGMENT 0x0002
664#define PFRULE_RETURNICMP 0x0004
665#define PFRULE_RETURN 0x0008
666#define PFRULE_NOSYNC 0x0010
667#define PFRULE_SRCTRACK 0x0020 /* track source states */
668#define PFRULE_RULESRCTRACK 0x0040 /* per rule */
669#define PFRULE_REFS 0x0080 /* rule has references */
670
671/* scrub flags */
672#define PFRULE_NODF 0x0100
673#define PFRULE_FRAGCROP 0x0200 /* non-buffering frag cache */
674#define PFRULE_FRAGDROP 0x0400 /* drop funny fragments */
675#define PFRULE_RANDOMID 0x0800
676#define PFRULE_REASSEMBLE_TCP 0x1000
677#define PFRULE_SET_TOS 0x2000
678
679/* rule flags again */
680#define PFRULE_IFBOUND 0x00010000 /* if-bound */
681#define PFRULE_STATESLOPPY 0x00020000 /* sloppy state tracking */
682
683#define PFSTATE_HIWAT 10000 /* default state table size */
684#define PFSTATE_ADAPT_START 6000 /* default adaptive timeout start */
685#define PFSTATE_ADAPT_END 12000 /* default adaptive timeout end */
686
687
688struct pf_threshold {
689 u_int32_t limit;
690#define PF_THRESHOLD_MULT 1000
691#define PF_THRESHOLD_MAX 0xffffffff / PF_THRESHOLD_MULT
692 u_int32_t seconds;
693 u_int32_t count;
694 u_int32_t last;
695};
696
697struct pf_src_node {
698 LIST_ENTRY(pf_src_node) entry;
699 struct pf_addr addr;
700 struct pf_addr raddr;
701 union pf_rule_ptr rule;
702 struct pfi_kif *kif;
703 u_int64_t bytes[2];
704 u_int64_t packets[2];
705 u_int32_t states;
706 u_int32_t conn;
707 struct pf_threshold conn_rate;
708 u_int32_t creation;
709 u_int32_t expire;
710 sa_family_t af;
711 u_int8_t ruletype;
712};
713
714#define PFSNODE_HIWAT 10000 /* default source node table size */
715
716struct pf_state_scrub {
717 struct timeval pfss_last; /* time received last packet */
718 u_int32_t pfss_tsecr; /* last echoed timestamp */
719 u_int32_t pfss_tsval; /* largest timestamp */
720 u_int32_t pfss_tsval0; /* original timestamp */
721 u_int16_t pfss_flags;
722#define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */
723#define PFSS_PAWS 0x0010 /* stricter PAWS checks */
724#define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */
725#define PFSS_DATA_TS 0x0040 /* timestamp on data packets */
726#define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */
727 u_int8_t pfss_ttl; /* stashed TTL */
728 u_int8_t pad;
729 u_int32_t pfss_ts_mod; /* timestamp modulation */
730};
731
732struct pf_state_host {
733 struct pf_addr addr;
734 u_int16_t port;
735 u_int16_t pad;
736};
737
738struct pf_state_peer {
739 struct pf_state_scrub *scrub; /* state is scrubbed */
740 u_int32_t seqlo; /* Max sequence number sent */
741 u_int32_t seqhi; /* Max the other end ACKd + win */
742 u_int32_t seqdiff; /* Sequence number modulator */
743 u_int16_t max_win; /* largest window (pre scaling) */
744 u_int16_t mss; /* Maximum segment size option */
745 u_int8_t state; /* active state level */
746 u_int8_t wscale; /* window scaling factor */
747 u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */
748 u_int8_t pad[1];
749};
750
751/* Keep synced with struct pf_state_key. */
752struct pf_state_key_cmp {
753 struct pf_addr addr[2];
754 u_int16_t port[2];
755 sa_family_t af;
756 u_int8_t proto;
757 u_int8_t pad[2];
758};
759
760struct pf_state_key {
761 struct pf_addr addr[2];
762 u_int16_t port[2];
763 sa_family_t af;
764 u_int8_t proto;
765 u_int8_t pad[2];
766
767 LIST_ENTRY(pf_state_key) entry;
768 TAILQ_HEAD(, pf_state) states[2];
769};
770
771/* Keep synced with struct pf_state. */
772struct pf_state_cmp {
773 u_int64_t id;
774 u_int32_t creatorid;
775 u_int8_t direction;
776 u_int8_t pad[3];
777};
778
779struct pf_state {
780 u_int64_t id;
781 u_int32_t creatorid;
782 u_int8_t direction;
783 u_int8_t pad[3];
784
785 u_int refs;
786 TAILQ_ENTRY(pf_state) sync_list;
787 TAILQ_ENTRY(pf_state) key_list[2];
788 LIST_ENTRY(pf_state) entry;
789 struct pf_state_peer src;
790 struct pf_state_peer dst;
791 union pf_rule_ptr rule;
792 union pf_rule_ptr anchor;
793 union pf_rule_ptr nat_rule;
794 struct pf_addr rt_addr;
795 struct pf_state_key *key[2]; /* addresses stack and wire */
796 struct pfi_kif *kif;
797 struct pfi_kif *rt_kif;
798 struct pf_src_node *src_node;
799 struct pf_src_node *nat_src_node;
800 u_int64_t packets[2];
801 u_int64_t bytes[2];
802 u_int32_t creation;
803 u_int32_t expire;
804 u_int32_t pfsync_time;
805 u_int16_t tag;
806 u_int8_t log;
807 u_int8_t state_flags;
808#define PFSTATE_ALLOWOPTS 0x01
809#define PFSTATE_SLOPPY 0x02
810/* was PFSTATE_PFLOW 0x04 */
811#define PFSTATE_NOSYNC 0x08
812#define PFSTATE_ACK 0x10
813 u_int8_t timeout;
814 u_int8_t sync_state; /* PFSYNC_S_x */
815
816 /* XXX */
817 u_int8_t sync_updates;
818 u_int8_t _tail[3];
819};
820
821/*
822 * Unified state structures for pulling states out of the kernel
823 * used by pfsync(4) and the pf(4) ioctl.
824 */
825struct pfsync_state_scrub {
826 u_int16_t pfss_flags;
827 u_int8_t pfss_ttl; /* stashed TTL */
828#define PFSYNC_SCRUB_FLAG_VALID 0x01
829 u_int8_t scrub_flag;
830 u_int32_t pfss_ts_mod; /* timestamp modulation */
831} __packed;
832
833struct pfsync_state_peer {
834 struct pfsync_state_scrub scrub; /* state is scrubbed */
835 u_int32_t seqlo; /* Max sequence number sent */
836 u_int32_t seqhi; /* Max the other end ACKd + win */
837 u_int32_t seqdiff; /* Sequence number modulator */
838 u_int16_t max_win; /* largest window (pre scaling) */
839 u_int16_t mss; /* Maximum segment size option */
840 u_int8_t state; /* active state level */
841 u_int8_t wscale; /* window scaling factor */
842 u_int8_t pad[6];
843} __packed;
844
845struct pfsync_state_key {
846 struct pf_addr addr[2];
847 u_int16_t port[2];
848};
849
850struct pfsync_state {
851 u_int64_t id;
852 char ifname[IFNAMSIZ];
853 struct pfsync_state_key key[2];
854 struct pfsync_state_peer src;
855 struct pfsync_state_peer dst;
856 struct pf_addr rt_addr;
857 u_int32_t rule;
858 u_int32_t anchor;
859 u_int32_t nat_rule;
860 u_int32_t creation;
861 u_int32_t expire;
862 u_int32_t packets[2][2];
863 u_int32_t bytes[2][2];
864 u_int32_t creatorid;
865 sa_family_t af;
866 u_int8_t proto;
867 u_int8_t direction;
868 u_int8_t __spare[2];
869 u_int8_t log;
870 u_int8_t state_flags;
871 u_int8_t timeout;
872 u_int8_t sync_flags;
873 u_int8_t updates;
874} __packed;
875
876#ifdef _KERNEL
877/* pfsync */
878typedef int pfsync_state_import_t(struct pfsync_state *, u_int8_t);
879typedef void pfsync_insert_state_t(struct pf_state *);
880typedef void pfsync_update_state_t(struct pf_state *);
881typedef void pfsync_delete_state_t(struct pf_state *);
882typedef void pfsync_clear_states_t(u_int32_t, const char *);
883typedef int pfsync_defer_t(struct pf_state *, struct mbuf *);
884
885extern pfsync_state_import_t *pfsync_state_import_ptr;
886extern pfsync_insert_state_t *pfsync_insert_state_ptr;
887extern pfsync_update_state_t *pfsync_update_state_ptr;
888extern pfsync_delete_state_t *pfsync_delete_state_ptr;
889extern pfsync_clear_states_t *pfsync_clear_states_ptr;
890extern pfsync_defer_t *pfsync_defer_ptr;
891
892void pfsync_state_export(struct pfsync_state *,
893 struct pf_state *);
894
895/* pflog */
896struct pf_ruleset;
897struct pf_pdesc;
898typedef int pflog_packet_t(struct pfi_kif *, struct mbuf *, sa_family_t,
899 u_int8_t, u_int8_t, struct pf_rule *, struct pf_rule *,
900 struct pf_ruleset *, struct pf_pdesc *, int);
901extern pflog_packet_t *pflog_packet_ptr;
902
903#define V_pf_end_threads VNET(pf_end_threads)
904#endif /* _KERNEL */
905
906#define PFSYNC_FLAG_SRCNODE 0x04
907#define PFSYNC_FLAG_NATSRCNODE 0x08
908
909/* for copies to/from network byte order */
910/* ioctl interface also uses network byte order */
911#define pf_state_peer_hton(s,d) do { \
912 (d)->seqlo = htonl((s)->seqlo); \
913 (d)->seqhi = htonl((s)->seqhi); \
914 (d)->seqdiff = htonl((s)->seqdiff); \
915 (d)->max_win = htons((s)->max_win); \
916 (d)->mss = htons((s)->mss); \
917 (d)->state = (s)->state; \
918 (d)->wscale = (s)->wscale; \
919 if ((s)->scrub) { \
920 (d)->scrub.pfss_flags = \
921 htons((s)->scrub->pfss_flags & PFSS_TIMESTAMP); \
922 (d)->scrub.pfss_ttl = (s)->scrub->pfss_ttl; \
923 (d)->scrub.pfss_ts_mod = htonl((s)->scrub->pfss_ts_mod);\
924 (d)->scrub.scrub_flag = PFSYNC_SCRUB_FLAG_VALID; \
925 } \
926} while (0)
927
928#define pf_state_peer_ntoh(s,d) do { \
929 (d)->seqlo = ntohl((s)->seqlo); \
930 (d)->seqhi = ntohl((s)->seqhi); \
931 (d)->seqdiff = ntohl((s)->seqdiff); \
932 (d)->max_win = ntohs((s)->max_win); \
933 (d)->mss = ntohs((s)->mss); \
934 (d)->state = (s)->state; \
935 (d)->wscale = (s)->wscale; \
936 if ((s)->scrub.scrub_flag == PFSYNC_SCRUB_FLAG_VALID && \
937 (d)->scrub != NULL) { \
938 (d)->scrub->pfss_flags = \
939 ntohs((s)->scrub.pfss_flags) & PFSS_TIMESTAMP; \
940 (d)->scrub->pfss_ttl = (s)->scrub.pfss_ttl; \
941 (d)->scrub->pfss_ts_mod = ntohl((s)->scrub.pfss_ts_mod);\
942 } \
943} while (0)
944
945#define pf_state_counter_hton(s,d) do { \
946 d[0] = htonl((s>>32)&0xffffffff); \
947 d[1] = htonl(s&0xffffffff); \
948} while (0)
949
950#define pf_state_counter_from_pfsync(s) \
951 (((u_int64_t)(s[0])<<32) | (u_int64_t)(s[1]))
952
953#define pf_state_counter_ntoh(s,d) do { \
954 d = ntohl(s[0]); \
955 d = d<<32; \
956 d += ntohl(s[1]); \
957} while (0)
958
959TAILQ_HEAD(pf_rulequeue, pf_rule);
960
961struct pf_anchor;
962
963struct pf_ruleset {
964 struct {
965 struct pf_rulequeue queues[2];
966 struct {
967 struct pf_rulequeue *ptr;
968 struct pf_rule **ptr_array;
969 u_int32_t rcount;
970 u_int32_t ticket;
971 int open;
972 } active, inactive;
973 } rules[PF_RULESET_MAX];
974 struct pf_anchor *anchor;
975 u_int32_t tticket;
976 int tables;
977 int topen;
978};
979
980RB_HEAD(pf_anchor_global, pf_anchor);
981RB_HEAD(pf_anchor_node, pf_anchor);
982struct pf_anchor {
983 RB_ENTRY(pf_anchor) entry_global;
984 RB_ENTRY(pf_anchor) entry_node;
985 struct pf_anchor *parent;
986 struct pf_anchor_node children;
987 char name[PF_ANCHOR_NAME_SIZE];
988 char path[MAXPATHLEN];
989 struct pf_ruleset ruleset;
990 int refcnt; /* anchor rules */
991 int match; /* XXX: used for pfctl black magic */
992};
993RB_PROTOTYPE(pf_anchor_global, pf_anchor, entry_global, pf_anchor_compare);
994RB_PROTOTYPE(pf_anchor_node, pf_anchor, entry_node, pf_anchor_compare);
995
996#define PF_RESERVED_ANCHOR "_pf"
997
998#define PFR_TFLAG_PERSIST 0x00000001
999#define PFR_TFLAG_CONST 0x00000002
1000#define PFR_TFLAG_ACTIVE 0x00000004
1001#define PFR_TFLAG_INACTIVE 0x00000008
1002#define PFR_TFLAG_REFERENCED 0x00000010
1003#define PFR_TFLAG_REFDANCHOR 0x00000020
1004#define PFR_TFLAG_COUNTERS 0x00000040
1005/* Adjust masks below when adding flags. */
1006#define PFR_TFLAG_USRMASK (PFR_TFLAG_PERSIST | \
1007 PFR_TFLAG_CONST | \
1008 PFR_TFLAG_COUNTERS)
1009#define PFR_TFLAG_SETMASK (PFR_TFLAG_ACTIVE | \
1010 PFR_TFLAG_INACTIVE | \
1011 PFR_TFLAG_REFERENCED | \
1012 PFR_TFLAG_REFDANCHOR)
1013#define PFR_TFLAG_ALLMASK (PFR_TFLAG_PERSIST | \
1014 PFR_TFLAG_CONST | \
1015 PFR_TFLAG_ACTIVE | \
1016 PFR_TFLAG_INACTIVE | \
1017 PFR_TFLAG_REFERENCED | \
1018 PFR_TFLAG_REFDANCHOR | \
1019 PFR_TFLAG_COUNTERS)
1020
1021struct pf_anchor_stackframe;
1022
1023struct pfr_table {
1024 char pfrt_anchor[MAXPATHLEN];
1025 char pfrt_name[PF_TABLE_NAME_SIZE];
1026 u_int32_t pfrt_flags;
1027 u_int8_t pfrt_fback;
1028};
1029
1030enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED,
1031 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE,
1032 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_NOCOUNT, PFR_FB_MAX };
1033
1034struct pfr_addr {
1035 union {
1036 struct in_addr _pfra_ip4addr;
1037 struct in6_addr _pfra_ip6addr;
1038 } pfra_u;
1039 u_int8_t pfra_af;
1040 u_int8_t pfra_net;
1041 u_int8_t pfra_not;
1042 u_int8_t pfra_fback;
1043};
1044#define pfra_ip4addr pfra_u._pfra_ip4addr
1045#define pfra_ip6addr pfra_u._pfra_ip6addr
1046
1047enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX };
1048enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX };
1049#define PFR_OP_XPASS PFR_OP_ADDR_MAX
1050
1051struct pfr_astats {
1052 struct pfr_addr pfras_a;
1053 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
1054 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
1055 long pfras_tzero;
1056};
1057
1058enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX };
1059
1060struct pfr_tstats {
1061 struct pfr_table pfrts_t;
1062 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
1063 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX];
1064 u_int64_t pfrts_match;
1065 u_int64_t pfrts_nomatch;
1066 long pfrts_tzero;
1067 int pfrts_cnt;
1068 int pfrts_refcnt[PFR_REFCNT_MAX];
1069};
1070#define pfrts_name pfrts_t.pfrt_name
1071#define pfrts_flags pfrts_t.pfrt_flags
1072
1073#ifndef _SOCKADDR_UNION_DEFINED
1074#define _SOCKADDR_UNION_DEFINED
1075union sockaddr_union {
1076 struct sockaddr sa;
1077 struct sockaddr_in sin;
1078 struct sockaddr_in6 sin6;
1079};
1080#endif /* _SOCKADDR_UNION_DEFINED */
1081
1082struct pfr_kcounters {
1083 u_int64_t pfrkc_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
1084 u_int64_t pfrkc_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX];
1085};
1086
1087SLIST_HEAD(pfr_kentryworkq, pfr_kentry);
1088struct pfr_kentry {
1089 struct radix_node pfrke_node[2];
1090 union sockaddr_union pfrke_sa;
1091 SLIST_ENTRY(pfr_kentry) pfrke_workq;
1092 struct pfr_kcounters *pfrke_counters;
1093 long pfrke_tzero;
1094 u_int8_t pfrke_af;
1095 u_int8_t pfrke_net;
1096 u_int8_t pfrke_not;
1097 u_int8_t pfrke_mark;
1098};
1099
1100SLIST_HEAD(pfr_ktableworkq, pfr_ktable);
1101RB_HEAD(pfr_ktablehead, pfr_ktable);
1102struct pfr_ktable {
1103 struct pfr_tstats pfrkt_ts;
1104 RB_ENTRY(pfr_ktable) pfrkt_tree;
1105 SLIST_ENTRY(pfr_ktable) pfrkt_workq;
1106 struct radix_node_head *pfrkt_ip4;
1107 struct radix_node_head *pfrkt_ip6;
1108 struct pfr_ktable *pfrkt_shadow;
1109 struct pfr_ktable *pfrkt_root;
1110 struct pf_ruleset *pfrkt_rs;
1111 long pfrkt_larg;
1112 int pfrkt_nflags;
1113};
1114#define pfrkt_t pfrkt_ts.pfrts_t
1115#define pfrkt_name pfrkt_t.pfrt_name
1116#define pfrkt_anchor pfrkt_t.pfrt_anchor
1117#define pfrkt_ruleset pfrkt_t.pfrt_ruleset
1118#define pfrkt_flags pfrkt_t.pfrt_flags
1119#define pfrkt_cnt pfrkt_ts.pfrts_cnt
1120#define pfrkt_refcnt pfrkt_ts.pfrts_refcnt
1121#define pfrkt_packets pfrkt_ts.pfrts_packets
1122#define pfrkt_bytes pfrkt_ts.pfrts_bytes
1123#define pfrkt_match pfrkt_ts.pfrts_match
1124#define pfrkt_nomatch pfrkt_ts.pfrts_nomatch
1125#define pfrkt_tzero pfrkt_ts.pfrts_tzero
1126
1127/* keep synced with pfi_kif, used in RB_FIND */
1128struct pfi_kif_cmp {
1129 char pfik_name[IFNAMSIZ];
1130};
1131
1132struct pfi_kif {
1133 char pfik_name[IFNAMSIZ];
1134 union {
1135 RB_ENTRY(pfi_kif) _pfik_tree;
1136 LIST_ENTRY(pfi_kif) _pfik_list;
1137 } _pfik_glue;
1138#define pfik_tree _pfik_glue._pfik_tree
1139#define pfik_list _pfik_glue._pfik_list
1140 u_int64_t pfik_packets[2][2][2];
1141 u_int64_t pfik_bytes[2][2][2];
1142 u_int32_t pfik_tzero;
1143 u_int pfik_flags;
1144 struct ifnet *pfik_ifp;
1145 struct ifg_group *pfik_group;
1146 u_int pfik_rulerefs;
1147 TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs;
1148};
1149
1150#define PFI_IFLAG_REFS 0x0001 /* has state references */
1151#define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */
1152
1153struct pf_pdesc {
1154 struct {
1155 int done;
1156 uid_t uid;
1157 gid_t gid;
1158 } lookup;
1159 u_int64_t tot_len; /* Make Mickey money */
1160 union {
1161 struct tcphdr *tcp;
1162 struct udphdr *udp;
1163 struct icmp *icmp;
1164#ifdef INET6
1165 struct icmp6_hdr *icmp6;
1166#endif /* INET6 */
1167 void *any;
1168 } hdr;
1169
1170 struct pf_rule *nat_rule; /* nat/rdr rule applied to packet */
1171 struct pf_addr *src; /* src address */
1172 struct pf_addr *dst; /* dst address */
1173 u_int16_t *sport;
1174 u_int16_t *dport;
1175 struct pf_mtag *pf_mtag;
1176
1177 u_int32_t p_len; /* total length of payload */
1178
1179 u_int16_t *ip_sum;
1180 u_int16_t *proto_sum;
1181 u_int16_t flags; /* Let SCRUB trigger behavior in
1182 * state code. Easier than tags */
1183#define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */
1184#define PFDESC_IP_REAS 0x0002 /* IP frags would've been reassembled */
1185 sa_family_t af;
1186 u_int8_t proto;
1187 u_int8_t tos;
1188 u_int8_t dir; /* direction */
1189 u_int8_t sidx; /* key index for source */
1190 u_int8_t didx; /* key index for destination */
1191};
1192
1193/* flags for RDR options */
1194#define PF_DPORT_RANGE 0x01 /* Dest port uses range */
1195#define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */
1196
1197/* Reasons code for passing/dropping a packet */
1198#define PFRES_MATCH 0 /* Explicit match of a rule */
1199#define PFRES_BADOFF 1 /* Bad offset for pull_hdr */
1200#define PFRES_FRAG 2 /* Dropping following fragment */
1201#define PFRES_SHORT 3 /* Dropping short packet */
1202#define PFRES_NORM 4 /* Dropping by normalizer */
1203#define PFRES_MEMORY 5 /* Dropped due to lacking mem */
1204#define PFRES_TS 6 /* Bad TCP Timestamp (RFC1323) */
1205#define PFRES_CONGEST 7 /* Congestion (of ipintrq) */
1206#define PFRES_IPOPTIONS 8 /* IP option */
1207#define PFRES_PROTCKSUM 9 /* Protocol checksum invalid */
1208#define PFRES_BADSTATE 10 /* State mismatch */
1209#define PFRES_STATEINS 11 /* State insertion failure */
1210#define PFRES_MAXSTATES 12 /* State limit */
1211#define PFRES_SRCLIMIT 13 /* Source node/conn limit */
1212#define PFRES_SYNPROXY 14 /* SYN proxy */
1213#define PFRES_MAX 15 /* total+1 */
1214
1215#define PFRES_NAMES { \
1216 "match", \
1217 "bad-offset", \
1218 "fragment", \
1219 "short", \
1220 "normalize", \
1221 "memory", \
1222 "bad-timestamp", \
1223 "congestion", \
1224 "ip-option", \
1225 "proto-cksum", \
1226 "state-mismatch", \
1227 "state-insert", \
1228 "state-limit", \
1229 "src-limit", \
1230 "synproxy", \
1231 NULL \
1232}
1233
1234/* Counters for other things we want to keep track of */
1235#define LCNT_STATES 0 /* states */
1236#define LCNT_SRCSTATES 1 /* max-src-states */
1237#define LCNT_SRCNODES 2 /* max-src-nodes */
1238#define LCNT_SRCCONN 3 /* max-src-conn */
1239#define LCNT_SRCCONNRATE 4 /* max-src-conn-rate */
1240#define LCNT_OVERLOAD_TABLE 5 /* entry added to overload table */
1241#define LCNT_OVERLOAD_FLUSH 6 /* state entries flushed */
1242#define LCNT_MAX 7 /* total+1 */
1243
1244#define LCNT_NAMES { \
1245 "max states per rule", \
1246 "max-src-states", \
1247 "max-src-nodes", \
1248 "max-src-conn", \
1249 "max-src-conn-rate", \
1250 "overload table insertion", \
1251 "overload flush states", \
1252 NULL \
1253}
1254
1255/* UDP state enumeration */
1256#define PFUDPS_NO_TRAFFIC 0
1257#define PFUDPS_SINGLE 1
1258#define PFUDPS_MULTIPLE 2
1259
1260#define PFUDPS_NSTATES 3 /* number of state levels */
1261
1262#define PFUDPS_NAMES { \
1263 "NO_TRAFFIC", \
1264 "SINGLE", \
1265 "MULTIPLE", \
1266 NULL \
1267}
1268
1269/* Other protocol state enumeration */
1270#define PFOTHERS_NO_TRAFFIC 0
1271#define PFOTHERS_SINGLE 1
1272#define PFOTHERS_MULTIPLE 2
1273
1274#define PFOTHERS_NSTATES 3 /* number of state levels */
1275
1276#define PFOTHERS_NAMES { \
1277 "NO_TRAFFIC", \
1278 "SINGLE", \
1279 "MULTIPLE", \
1280 NULL \
1281}
1282
1283#define FCNT_STATE_SEARCH 0
1284#define FCNT_STATE_INSERT 1
1285#define FCNT_STATE_REMOVALS 2
1286#define FCNT_MAX 3
1287
1288#define SCNT_SRC_NODE_SEARCH 0
1289#define SCNT_SRC_NODE_INSERT 1
1290#define SCNT_SRC_NODE_REMOVALS 2
1291#define SCNT_MAX 3
1292
1293#define ACTION_SET(a, x) \
1294 do { \
1295 if ((a) != NULL) \
1296 *(a) = (x); \
1297 } while (0)
1298
1299#define REASON_SET(a, x) \
1300 do { \
1301 if ((a) != NULL) \
1302 *(a) = (x); \
1303 if (x < PFRES_MAX) \
1304 V_pf_status.counters[x]++; \
1305 } while (0)
1306
1307struct pf_status {
1308 u_int64_t counters[PFRES_MAX];
1309 u_int64_t lcounters[LCNT_MAX]; /* limit counters */
1310 u_int64_t fcounters[FCNT_MAX];
1311 u_int64_t scounters[SCNT_MAX];
1312 u_int64_t pcounters[2][2][3];
1313 u_int64_t bcounters[2][2];
1314 u_int32_t running;
1315 u_int32_t states;
1316 u_int32_t src_nodes;
1317 u_int32_t since;
1318 u_int32_t debug;
1319 u_int32_t hostid;
1320 char ifname[IFNAMSIZ];
1321 u_int8_t pf_chksum[PF_MD5_DIGEST_LENGTH];
1322};
1323
1324struct cbq_opts {
1325 u_int minburst;
1326 u_int maxburst;
1327 u_int pktsize;
1328 u_int maxpktsize;
1329 u_int ns_per_byte;
1330 u_int maxidle;
1331 int minidle;
1332 u_int offtime;
1333 int flags;
1334};
1335
1336struct priq_opts {
1337 int flags;
1338};
1339
1340struct hfsc_opts {
1341 /* real-time service curve */
1342 u_int rtsc_m1; /* slope of the 1st segment in bps */
1343 u_int rtsc_d; /* the x-projection of m1 in msec */
1344 u_int rtsc_m2; /* slope of the 2nd segment in bps */
1345 /* link-sharing service curve */
1346 u_int lssc_m1;
1347 u_int lssc_d;
1348 u_int lssc_m2;
1349 /* upper-limit service curve */
1350 u_int ulsc_m1;
1351 u_int ulsc_d;
1352 u_int ulsc_m2;
1353 int flags;
1354};
1355
1356struct pf_altq {
1357 char ifname[IFNAMSIZ];
1358
1359 void *altq_disc; /* discipline-specific state */
1360 TAILQ_ENTRY(pf_altq) entries;
1361
1362 /* scheduler spec */
1363 u_int8_t scheduler; /* scheduler type */
1364 u_int16_t tbrsize; /* tokenbucket regulator size */
1365 u_int32_t ifbandwidth; /* interface bandwidth */
1366
1367 /* queue spec */
1368 char qname[PF_QNAME_SIZE]; /* queue name */
1369 char parent[PF_QNAME_SIZE]; /* parent name */
1370 u_int32_t parent_qid; /* parent queue id */
1371 u_int32_t bandwidth; /* queue bandwidth */
1372 u_int8_t priority; /* priority */
1373 u_int8_t local_flags; /* dynamic interface */
1374#define PFALTQ_FLAG_IF_REMOVED 0x01
1375
1376 u_int16_t qlimit; /* queue size limit */
1377 u_int16_t flags; /* misc flags */
1378 union {
1379 struct cbq_opts cbq_opts;
1380 struct priq_opts priq_opts;
1381 struct hfsc_opts hfsc_opts;
1382 } pq_u;
1383
1384 u_int32_t qid; /* return value */
1385};
1386
1387struct pf_divert {
1388 union {
1389 struct in_addr ipv4;
1390 struct in6_addr ipv6;
1391 } addr;
1392 u_int16_t port;
1393};
1394
1395#define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */
1396#define PFR_KENTRY_HIWAT 200000 /* Number of table entries */
1397
1398/*
1399 * ioctl parameter structures
1400 */
1401
1402struct pfioc_pooladdr {
1403 u_int32_t action;
1404 u_int32_t ticket;
1405 u_int32_t nr;
1406 u_int32_t r_num;
1407 u_int8_t r_action;
1408 u_int8_t r_last;
1409 u_int8_t af;
1410 char anchor[MAXPATHLEN];
1411 struct pf_pooladdr addr;
1412};
1413
1414struct pfioc_rule {
1415 u_int32_t action;
1416 u_int32_t ticket;
1417 u_int32_t pool_ticket;
1418 u_int32_t nr;
1419 char anchor[MAXPATHLEN];
1420 char anchor_call[MAXPATHLEN];
1421 struct pf_rule rule;
1422};
1423
1424struct pfioc_natlook {
1425 struct pf_addr saddr;
1426 struct pf_addr daddr;
1427 struct pf_addr rsaddr;
1428 struct pf_addr rdaddr;
1429 u_int16_t sport;
1430 u_int16_t dport;
1431 u_int16_t rsport;
1432 u_int16_t rdport;
1433 sa_family_t af;
1434 u_int8_t proto;
1435 u_int8_t direction;
1436};
1437
1438struct pfioc_state {
1439 struct pfsync_state state;
1440};
1441
1442struct pfioc_src_node_kill {
1443 sa_family_t psnk_af;
1444 struct pf_rule_addr psnk_src;
1445 struct pf_rule_addr psnk_dst;
1446 u_int psnk_killed;
1447};
1448
1449struct pfioc_state_kill {
1450 struct pf_state_cmp psk_pfcmp;
1451 sa_family_t psk_af;
1452 int psk_proto;
1453 struct pf_rule_addr psk_src;
1454 struct pf_rule_addr psk_dst;
1455 char psk_ifname[IFNAMSIZ];
1456 char psk_label[PF_RULE_LABEL_SIZE];
1457 u_int psk_killed;
1458};
1459
1460struct pfioc_states {
1461 int ps_len;
1462 union {
1463 caddr_t psu_buf;
1464 struct pfsync_state *psu_states;
1465 } ps_u;
1466#define ps_buf ps_u.psu_buf
1467#define ps_states ps_u.psu_states
1468};
1469
1470struct pfioc_src_nodes {
1471 int psn_len;
1472 union {
1473 caddr_t psu_buf;
1474 struct pf_src_node *psu_src_nodes;
1475 } psn_u;
1476#define psn_buf psn_u.psu_buf
1477#define psn_src_nodes psn_u.psu_src_nodes
1478};
1479
1480struct pfioc_if {
1481 char ifname[IFNAMSIZ];
1482};
1483
1484struct pfioc_tm {
1485 int timeout;
1486 int seconds;
1487};
1488
1489struct pfioc_limit {
1490 int index;
1491 unsigned limit;
1492};
1493
1494struct pfioc_altq {
1495 u_int32_t action;
1496 u_int32_t ticket;
1497 u_int32_t nr;
1498 struct pf_altq altq;
1499};
1500
1501struct pfioc_qstats {
1502 u_int32_t ticket;
1503 u_int32_t nr;
1504 void *buf;
1505 int nbytes;
1506 u_int8_t scheduler;
1507};
1508
1509struct pfioc_ruleset {
1510 u_int32_t nr;
1511 char path[MAXPATHLEN];
1512 char name[PF_ANCHOR_NAME_SIZE];
1513};
1514
1515#define PF_RULESET_ALTQ (PF_RULESET_MAX)
1516#define PF_RULESET_TABLE (PF_RULESET_MAX+1)
1517struct pfioc_trans {
1518 int size; /* number of elements */
1519 int esize; /* size of each element in bytes */
1520 struct pfioc_trans_e {
1521 int rs_num;
1522 char anchor[MAXPATHLEN];
1523 u_int32_t ticket;
1524 } *array;
1525};
1526
1527#define PFR_FLAG_ATOMIC 0x00000001 /* unused */
1528#define PFR_FLAG_DUMMY 0x00000002
1529#define PFR_FLAG_FEEDBACK 0x00000004
1530#define PFR_FLAG_CLSTATS 0x00000008
1531#define PFR_FLAG_ADDRSTOO 0x00000010
1532#define PFR_FLAG_REPLACE 0x00000020
1533#define PFR_FLAG_ALLRSETS 0x00000040
1534#define PFR_FLAG_ALLMASK 0x0000007F
1535#ifdef _KERNEL
1536#define PFR_FLAG_USERIOCTL 0x10000000
1537#endif
1538
1539struct pfioc_table {
1540 struct pfr_table pfrio_table;
1541 void *pfrio_buffer;
1542 int pfrio_esize;
1543 int pfrio_size;
1544 int pfrio_size2;
1545 int pfrio_nadd;
1546 int pfrio_ndel;
1547 int pfrio_nchange;
1548 int pfrio_flags;
1549 u_int32_t pfrio_ticket;
1550};
1551#define pfrio_exists pfrio_nadd
1552#define pfrio_nzero pfrio_nadd
1553#define pfrio_nmatch pfrio_nadd
1554#define pfrio_naddr pfrio_size2
1555#define pfrio_setflag pfrio_size2
1556#define pfrio_clrflag pfrio_nadd
1557
1558struct pfioc_iface {
1559 char pfiio_name[IFNAMSIZ];
1560 void *pfiio_buffer;
1561 int pfiio_esize;
1562 int pfiio_size;
1563 int pfiio_nzero;
1564 int pfiio_flags;
1565};
1566
1567
1568/*
1569 * ioctl operations
1570 */
1571
1572#define DIOCSTART _IO ('D', 1)
1573#define DIOCSTOP _IO ('D', 2)
1574#define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule)
1575#define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule)
1576#define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule)
1577/* XXX cut 8 - 17 */
1578#define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill)
1579#define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state)
1580#define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if)
1581#define DIOCGETSTATUS _IOWR('D', 21, struct pf_status)
1582#define DIOCCLRSTATUS _IO ('D', 22)
1583#define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook)
1584#define DIOCSETDEBUG _IOWR('D', 24, u_int32_t)
1585#define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states)
1586#define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule)
1587/* XXX cut 26 - 28 */
1588#define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm)
1589#define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm)
1590#define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state)
1591#define DIOCCLRRULECTRS _IO ('D', 38)
1592#define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit)
1593#define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit)
1594#define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill)
1595#define DIOCSTARTALTQ _IO ('D', 42)
1596#define DIOCSTOPALTQ _IO ('D', 43)
1597#define DIOCADDALTQ _IOWR('D', 45, struct pfioc_altq)
1598#define DIOCGETALTQS _IOWR('D', 47, struct pfioc_altq)
1599#define DIOCGETALTQ _IOWR('D', 48, struct pfioc_altq)
1600#define DIOCCHANGEALTQ _IOWR('D', 49, struct pfioc_altq)
1601#define DIOCGETQSTATS _IOWR('D', 50, struct pfioc_qstats)
1602#define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr)
1603#define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr)
1604#define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr)
1605#define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr)
1606#define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr)
1607/* XXX cut 55 - 57 */
1608#define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset)
1609#define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset)
1610#define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table)
1611#define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table)
1612#define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table)
1613#define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table)
1614#define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table)
1615#define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table)
1616#define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table)
1617#define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table)
1618#define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table)
1619#define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table)
1620#define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table)
1621#define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table)
1622#define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table)
1623#define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table)
1624#define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table)
1625#define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table)
1626#define DIOCOSFPFLUSH _IO('D', 78)
1627#define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl)
1628#define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl)
1629#define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans)
1630#define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans)
1631#define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans)
1632#define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes)
1633#define DIOCCLRSRCNODES _IO('D', 85)
1634#define DIOCSETHOSTID _IOWR('D', 86, u_int32_t)
1635#define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface)
1636#define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface)
1637#define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface)
1638#define DIOCKILLSRCNODES _IOWR('D', 91, struct pfioc_src_node_kill)
1639struct pf_ifspeed {
1640 char ifname[IFNAMSIZ];
1641 u_int32_t baudrate;
1642};
1643#define DIOCGIFSPEED _IOWR('D', 92, struct pf_ifspeed)
1644
1645#ifdef _KERNEL
1646struct pf_srchash {
1647 LIST_HEAD(, pf_src_node) nodes;
1648 struct mtx lock;
1649};
1650
1651struct pf_keyhash {
1652 LIST_HEAD(, pf_state_key) keys;
1653 struct mtx lock;
1654};
1655
1656struct pf_idhash {
1657 LIST_HEAD(, pf_state) states;
1658 struct mtx lock;
1659};
1660
1661#define PF_HASHSIZ (32768)
1662VNET_DECLARE(struct pf_keyhash *, pf_keyhash);
1663VNET_DECLARE(struct pf_idhash *, pf_idhash);
1664VNET_DECLARE(u_long, pf_hashmask);
1665#define V_pf_keyhash VNET(pf_keyhash)
1666#define V_pf_idhash VNET(pf_idhash)
1667#define V_pf_hashmask VNET(pf_hashmask)
1668VNET_DECLARE(struct pf_srchash *, pf_srchash);
1669VNET_DECLARE(u_long, pf_srchashmask);
1670#define V_pf_srchash VNET(pf_srchash)
1671#define V_pf_srchashmask VNET(pf_srchashmask)
1672
1673#define PF_IDHASH(s) (be64toh((s)->id) % (V_pf_hashmask + 1))
1674
1675VNET_DECLARE(void *, pf_swi_cookie);
1676#define V_pf_swi_cookie VNET(pf_swi_cookie)
1677
1678VNET_DECLARE(uint64_t, pf_stateid[MAXCPU]);
1679#define V_pf_stateid VNET(pf_stateid)
1680
1681TAILQ_HEAD(pf_altqqueue, pf_altq);
1682VNET_DECLARE(struct pf_altqqueue, pf_altqs[2]);
1683#define V_pf_altqs VNET(pf_altqs)
1684VNET_DECLARE(struct pf_palist, pf_pabuf);
1685#define V_pf_pabuf VNET(pf_pabuf)
1686
1687VNET_DECLARE(u_int32_t, ticket_altqs_active);
1688#define V_ticket_altqs_active VNET(ticket_altqs_active)
1689VNET_DECLARE(u_int32_t, ticket_altqs_inactive);
1690#define V_ticket_altqs_inactive VNET(ticket_altqs_inactive)
1691VNET_DECLARE(int, altqs_inactive_open);
1692#define V_altqs_inactive_open VNET(altqs_inactive_open)
1693VNET_DECLARE(u_int32_t, ticket_pabuf);
1694#define V_ticket_pabuf VNET(ticket_pabuf)
1695VNET_DECLARE(struct pf_altqqueue *, pf_altqs_active);
1696#define V_pf_altqs_active VNET(pf_altqs_active)
1697VNET_DECLARE(struct pf_altqqueue *, pf_altqs_inactive);
1698#define V_pf_altqs_inactive VNET(pf_altqs_inactive)
1699
1700VNET_DECLARE(struct pf_rulequeue, pf_unlinked_rules);
1701#define V_pf_unlinked_rules VNET(pf_unlinked_rules)
1702
1703void pf_initialize(void);
1704void pf_cleanup(void);
1705
1706struct pf_mtag *pf_get_mtag(struct mbuf *);
1707
1708extern void pf_calc_skip_steps(struct pf_rulequeue *);
1709#ifdef ALTQ
1710extern void pf_altq_ifnet_event(struct ifnet *, int);
1711#endif
1712VNET_DECLARE(uma_zone_t, pf_state_z);
1713#define V_pf_state_z VNET(pf_state_z)
1714VNET_DECLARE(uma_zone_t, pf_state_key_z);
1715#define V_pf_state_key_z VNET(pf_state_key_z)
1716VNET_DECLARE(uma_zone_t, pf_state_scrub_z);
1717#define V_pf_state_scrub_z VNET(pf_state_scrub_z)
1718
1719extern void pf_purge_thread(void *);
1720extern void pf_intr(void *);
1721extern void pf_purge_expired_src_nodes(void);
1722
1723extern int pf_unlink_state(struct pf_state *, u_int);
1724#define PF_ENTER_LOCKED 0x00000001
1725#define PF_RETURN_LOCKED 0x00000002
1726extern int pf_state_insert(struct pfi_kif *,
1727 struct pf_state_key *,
1728 struct pf_state_key *,
1729 struct pf_state *);
1730extern void pf_free_state(struct pf_state *);
1731
1732static __inline void
1733pf_ref_state(struct pf_state *s)
1734{
1735
1736 refcount_acquire(&s->refs);
1737}
1738
1739static __inline int
1740pf_release_state(struct pf_state *s)
1741{
1742
1743 if (refcount_release(&s->refs)) {
1744 pf_free_state(s);
1745 return (1);
1746 } else
1747 return (0);
1748}
1749
1750extern struct pf_state *pf_find_state_byid(uint64_t, uint32_t);
1751extern struct pf_state *pf_find_state_all(struct pf_state_key_cmp *,
1752 u_int, int *);
1753struct pf_src_node *pf_find_src_node(struct pf_addr *, struct pf_rule *,
1754 sa_family_t, int);
1755extern void pf_print_state(struct pf_state *);
1756extern void pf_print_flags(u_int8_t);
1757extern u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t,
1758 u_int8_t);
1759
1760VNET_DECLARE(struct ifnet *, sync_ifp);
1761#define V_sync_ifp VNET(sync_ifp);
1762VNET_DECLARE(struct pf_rule, pf_default_rule);
1763#define V_pf_default_rule VNET(pf_default_rule)
1764extern void pf_addrcpy(struct pf_addr *, struct pf_addr *,
1765 u_int8_t);
1766void pf_free_rule(struct pf_rule *);
1767
1768#ifdef INET
1769int pf_test(int, struct ifnet *, struct mbuf **, struct inpcb *);
1770#endif /* INET */
1771
1772#ifdef INET6
1773int pf_test6(int, struct ifnet *, struct mbuf **, struct inpcb *);
1774void pf_poolmask(struct pf_addr *, struct pf_addr*,
1775 struct pf_addr *, struct pf_addr *, u_int8_t);
1776void pf_addr_inc(struct pf_addr *, sa_family_t);
1777#endif /* INET6 */
1778
1779u_int32_t pf_new_isn(struct pf_state *);
1780void *pf_pull_hdr(struct mbuf *, int, void *, int, u_short *, u_short *,
1781 sa_family_t);
1782void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t);
1783void pf_send_deferred_syn(struct pf_state *);
1784int pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *,
1785 struct pf_addr *, sa_family_t);
1786int pf_match_addr_range(struct pf_addr *, struct pf_addr *,
1787 struct pf_addr *, sa_family_t);
1788int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t);
1789
1790void pf_normalize_init(void);
1791void pf_normalize_cleanup(void);
1792int pf_normalize_ip(struct mbuf **, int, struct pfi_kif *, u_short *,
1793 struct pf_pdesc *);
1794int pf_normalize_ip6(struct mbuf **, int, struct pfi_kif *, u_short *,
1795 struct pf_pdesc *);
1796int pf_normalize_tcp(int, struct pfi_kif *, struct mbuf *, int, int, void *,
1797 struct pf_pdesc *);
1798void pf_normalize_tcp_cleanup(struct pf_state *);
1799int pf_normalize_tcp_init(struct mbuf *, int, struct pf_pdesc *,
1800 struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *);
1801int pf_normalize_tcp_stateful(struct mbuf *, int, struct pf_pdesc *,
1802 u_short *, struct tcphdr *, struct pf_state *,
1803 struct pf_state_peer *, struct pf_state_peer *, int *);
1804u_int32_t
1805 pf_state_expires(const struct pf_state *);
1806void pf_purge_expired_fragments(void);
1807int pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kif *,
1808 int);
1809int pf_socket_lookup(int, struct pf_pdesc *, struct mbuf *);
1810struct pf_state_key *pf_alloc_state_key(int);
1811void pfr_initialize(void);
1812void pfr_cleanup(void);
1813int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t);
1814void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t,
1815 u_int64_t, int, int, int);
1816int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, sa_family_t);
1817void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *);
1818struct pfr_ktable *
1819 pfr_attach_table(struct pf_ruleset *, char *);
1820void pfr_detach_table(struct pfr_ktable *);
1821int pfr_clr_tables(struct pfr_table *, int *, int);
1822int pfr_add_tables(struct pfr_table *, int, int *, int);
1823int pfr_del_tables(struct pfr_table *, int, int *, int);
1824int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int);
1825int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int);
1826int pfr_clr_tstats(struct pfr_table *, int, int *, int);
1827int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int);
1828int pfr_clr_addrs(struct pfr_table *, int *, int);
1829int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *, long);
1830int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
1831 int);
1832int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
1833 int);
1834int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
1835 int *, int *, int *, int, u_int32_t);
1836int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int);
1837int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int);
1838int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *,
1839 int);
1840int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *,
1841 int);
1842int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int);
1843int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int);
1844int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int);
1845int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *,
1846 int *, u_int32_t, int);
1847
1848MALLOC_DECLARE(PFI_MTYPE);
1849VNET_DECLARE(struct pfi_kif *, pfi_all);
1850#define V_pfi_all VNET(pfi_all)
1851
1852void pfi_initialize(void);
1853void pfi_cleanup(void);
1854void pfi_kif_ref(struct pfi_kif *);
1855void pfi_kif_unref(struct pfi_kif *);
1856struct pfi_kif *pfi_kif_find(const char *);
1857struct pfi_kif *pfi_kif_attach(struct pfi_kif *, const char *);
1858int pfi_kif_match(struct pfi_kif *, struct pfi_kif *);
1859void pfi_kif_purge(void);
1860int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *,
1861 sa_family_t);
1862int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t);
1863void pfi_dynaddr_remove(struct pfi_dynaddr *);
1864void pfi_dynaddr_copyout(struct pf_addr_wrap *);
1865void pfi_update_status(const char *, struct pf_status *);
1866void pfi_get_ifaces(const char *, struct pfi_kif *, int *);
1867int pfi_set_flags(const char *, int);
1868int pfi_clear_flags(const char *, int);
1869
1870int pf_match_tag(struct mbuf *, struct pf_rule *, int *, int);
1871int pf_tag_packet(struct mbuf *, struct pf_pdesc *, int);
1872void pf_qid2qname(u_int32_t, char *);
1873
1874VNET_DECLARE(struct pf_status, pf_status);
1875#define V_pf_status VNET(pf_status)
1876
1877struct pf_limit {
1878 uma_zone_t zone;
1879 u_int limit;
1880};
1881VNET_DECLARE(struct pf_limit, pf_limits[PF_LIMIT_MAX]);
1882#define V_pf_limits VNET(pf_limits)
1883
1884#endif /* _KERNEL */
1885
1886#ifdef _KERNEL
1887VNET_DECLARE(struct pf_anchor_global, pf_anchors);
1888#define V_pf_anchors VNET(pf_anchors)
1889VNET_DECLARE(struct pf_anchor, pf_main_anchor);
1890#define V_pf_main_anchor VNET(pf_main_anchor)
1891#define pf_main_ruleset V_pf_main_anchor.ruleset
1892#endif
1893
1894/* these ruleset functions can be linked into userland programs (pfctl) */
1895int pf_get_ruleset_number(u_int8_t);
1896void pf_init_ruleset(struct pf_ruleset *);
1897int pf_anchor_setup(struct pf_rule *,
1898 const struct pf_ruleset *, const char *);
1899int pf_anchor_copyout(const struct pf_ruleset *,
1900 const struct pf_rule *, struct pfioc_rule *);
1901void pf_anchor_remove(struct pf_rule *);
1902void pf_remove_if_empty_ruleset(struct pf_ruleset *);
1903struct pf_ruleset *pf_find_ruleset(const char *);
1904struct pf_ruleset *pf_find_or_create_ruleset(const char *);
1905void pf_rs_initialize(void);
1906
1907/* The fingerprint functions can be linked into userland programs (tcpdump) */
1908int pf_osfp_add(struct pf_osfp_ioctl *);
1909#ifdef _KERNEL
1910struct pf_osfp_enlist *
1911 pf_osfp_fingerprint(struct pf_pdesc *, struct mbuf *, int,
1912 const struct tcphdr *);
1913#endif /* _KERNEL */
1914void pf_osfp_flush(void);
1915int pf_osfp_get(struct pf_osfp_ioctl *);
1916int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t);
1917
1918#ifdef _KERNEL
1919void pf_print_host(struct pf_addr *, u_int16_t, u_int8_t);
1920
1921void pf_step_into_anchor(struct pf_anchor_stackframe *, int *,
1922 struct pf_ruleset **, int, struct pf_rule **,
1923 struct pf_rule **, int *);
1924int pf_step_out_of_anchor(struct pf_anchor_stackframe *, int *,
1925 struct pf_ruleset **, int, struct pf_rule **,
1926 struct pf_rule **, int *);
1927
1928int pf_map_addr(u_int8_t, struct pf_rule *,
1929 struct pf_addr *, struct pf_addr *,
1930 struct pf_addr *, struct pf_src_node **);
1931struct pf_rule *pf_get_translation(struct pf_pdesc *, struct mbuf *,
1932 int, int, struct pfi_kif *, struct pf_src_node **,
1933 struct pf_state_key **, struct pf_state_key **,
1934 struct pf_addr *, struct pf_addr *,
1935 uint16_t, uint16_t, struct pf_anchor_stackframe *);
1936
1937struct pf_state_key *pf_state_key_setup(struct pf_pdesc *, struct pf_addr *,
1938 struct pf_addr *, u_int16_t, u_int16_t);
1939struct pf_state_key *pf_state_key_clone(struct pf_state_key *);
1940#endif /* _KERNEL */
1941
1942#endif /* _NET_PFVAR_H_ */
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