1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2001 Daniel Hartmeier 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * - Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * - Redistributions in binary form must reproduce the above 14 * copyright notice, this list of conditions and the following 15 * disclaimer in the documentation and/or other materials provided 16 * with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 21 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 22 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 24 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 25 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 26 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 28 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 * 31 * $OpenBSD: pfvar.h,v 1.282 2009/01/29 15:12:28 pyr Exp $ 32 */ 33 34 #ifndef _NET_PFVAR_H_ 35 #define _NET_PFVAR_H_ 36 37 #include <sys/param.h> 38 #include <sys/queue.h> 39 #include <sys/counter.h> 40 #include <sys/cpuset.h> 41 #include <sys/epoch.h> 42 #include <sys/malloc.h> 43 #include <sys/nv.h> 44 #include <sys/refcount.h> 45 #include <sys/sdt.h> 46 #include <sys/sysctl.h> 47 #include <sys/smp.h> 48 #include <sys/lock.h> 49 #include <sys/rmlock.h> 50 #include <sys/tree.h> 51 #include <sys/seqc.h> 52 #include <vm/uma.h> 53 54 #include <net/if.h> 55 #include <net/ethernet.h> 56 #include <net/radix.h> 57 #include <netinet/in.h> 58 #ifdef _KERNEL 59 #include <netinet/ip.h> 60 #include <netinet/tcp.h> 61 #include <netinet/udp.h> 62 #include <netinet/sctp.h> 63 #include <netinet/ip_icmp.h> 64 #include <netinet/icmp6.h> 65 #endif 66 67 #include <netpfil/pf/pf.h> 68 #include <netpfil/pf/pf_altq.h> 69 #include <netpfil/pf/pf_mtag.h> 70 71 #ifdef _KERNEL 72 73 #define PF_PFIL_NOREFRAGMENT 0x80000000 74 75 #if defined(__arm__) 76 #define PF_WANT_32_TO_64_COUNTER 77 #endif 78 79 /* 80 * A hybrid of 32-bit and 64-bit counters which can be used on platforms where 81 * counter(9) is very expensive. 82 * 83 * As 32-bit counters are expected to overflow, a periodic job sums them up to 84 * a saved 64-bit state. Fetching the value still walks all CPUs to get the most 85 * current snapshot. 86 */ 87 #ifdef PF_WANT_32_TO_64_COUNTER 88 struct pf_counter_u64_pcpu { 89 u_int32_t current; 90 u_int32_t snapshot; 91 }; 92 93 struct pf_counter_u64 { 94 struct pf_counter_u64_pcpu *pfcu64_pcpu; 95 u_int64_t pfcu64_value; 96 seqc_t pfcu64_seqc; 97 }; 98 99 static inline int 100 pf_counter_u64_init(struct pf_counter_u64 *pfcu64, int flags) 101 { 102 103 pfcu64->pfcu64_value = 0; 104 pfcu64->pfcu64_seqc = 0; 105 pfcu64->pfcu64_pcpu = uma_zalloc_pcpu(pcpu_zone_8, flags | M_ZERO); 106 if (__predict_false(pfcu64->pfcu64_pcpu == NULL)) 107 return (ENOMEM); 108 return (0); 109 } 110 111 static inline void 112 pf_counter_u64_deinit(struct pf_counter_u64 *pfcu64) 113 { 114 115 uma_zfree_pcpu(pcpu_zone_8, pfcu64->pfcu64_pcpu); 116 } 117 118 static inline void 119 pf_counter_u64_critical_enter(void) 120 { 121 122 critical_enter(); 123 } 124 125 static inline void 126 pf_counter_u64_critical_exit(void) 127 { 128 129 critical_exit(); 130 } 131 132 static inline void 133 pf_counter_u64_rollup_protected(struct pf_counter_u64 *pfcu64, uint64_t n) 134 { 135 136 MPASS(curthread->td_critnest > 0); 137 pfcu64->pfcu64_value += n; 138 } 139 140 static inline void 141 pf_counter_u64_add_protected(struct pf_counter_u64 *pfcu64, uint32_t n) 142 { 143 struct pf_counter_u64_pcpu *pcpu; 144 u_int32_t val; 145 146 MPASS(curthread->td_critnest > 0); 147 pcpu = zpcpu_get(pfcu64->pfcu64_pcpu); 148 val = atomic_load_int(&pcpu->current); 149 atomic_store_int(&pcpu->current, val + n); 150 } 151 152 static inline void 153 pf_counter_u64_add(struct pf_counter_u64 *pfcu64, uint32_t n) 154 { 155 156 critical_enter(); 157 pf_counter_u64_add_protected(pfcu64, n); 158 critical_exit(); 159 } 160 161 static inline u_int64_t 162 pf_counter_u64_periodic(struct pf_counter_u64 *pfcu64) 163 { 164 struct pf_counter_u64_pcpu *pcpu; 165 u_int64_t sum; 166 u_int32_t val; 167 int cpu; 168 169 MPASS(curthread->td_critnest > 0); 170 seqc_write_begin(&pfcu64->pfcu64_seqc); 171 sum = pfcu64->pfcu64_value; 172 CPU_FOREACH(cpu) { 173 pcpu = zpcpu_get_cpu(pfcu64->pfcu64_pcpu, cpu); 174 val = atomic_load_int(&pcpu->current); 175 sum += (uint32_t)(val - pcpu->snapshot); 176 pcpu->snapshot = val; 177 } 178 pfcu64->pfcu64_value = sum; 179 seqc_write_end(&pfcu64->pfcu64_seqc); 180 return (sum); 181 } 182 183 static inline u_int64_t 184 pf_counter_u64_fetch(const struct pf_counter_u64 *pfcu64) 185 { 186 struct pf_counter_u64_pcpu *pcpu; 187 u_int64_t sum; 188 seqc_t seqc; 189 int cpu; 190 191 for (;;) { 192 seqc = seqc_read(&pfcu64->pfcu64_seqc); 193 sum = 0; 194 CPU_FOREACH(cpu) { 195 pcpu = zpcpu_get_cpu(pfcu64->pfcu64_pcpu, cpu); 196 sum += (uint32_t)(atomic_load_int(&pcpu->current) -pcpu->snapshot); 197 } 198 sum += pfcu64->pfcu64_value; 199 if (seqc_consistent(&pfcu64->pfcu64_seqc, seqc)) 200 break; 201 } 202 return (sum); 203 } 204 205 static inline void 206 pf_counter_u64_zero_protected(struct pf_counter_u64 *pfcu64) 207 { 208 struct pf_counter_u64_pcpu *pcpu; 209 int cpu; 210 211 MPASS(curthread->td_critnest > 0); 212 seqc_write_begin(&pfcu64->pfcu64_seqc); 213 CPU_FOREACH(cpu) { 214 pcpu = zpcpu_get_cpu(pfcu64->pfcu64_pcpu, cpu); 215 pcpu->snapshot = atomic_load_int(&pcpu->current); 216 } 217 pfcu64->pfcu64_value = 0; 218 seqc_write_end(&pfcu64->pfcu64_seqc); 219 } 220 221 static inline void 222 pf_counter_u64_zero(struct pf_counter_u64 *pfcu64) 223 { 224 225 critical_enter(); 226 pf_counter_u64_zero_protected(pfcu64); 227 critical_exit(); 228 } 229 #else 230 struct pf_counter_u64 { 231 counter_u64_t counter; 232 }; 233 234 static inline int 235 pf_counter_u64_init(struct pf_counter_u64 *pfcu64, int flags) 236 { 237 238 pfcu64->counter = counter_u64_alloc(flags); 239 if (__predict_false(pfcu64->counter == NULL)) 240 return (ENOMEM); 241 return (0); 242 } 243 244 static inline void 245 pf_counter_u64_deinit(struct pf_counter_u64 *pfcu64) 246 { 247 248 counter_u64_free(pfcu64->counter); 249 } 250 251 static inline void 252 pf_counter_u64_critical_enter(void) 253 { 254 255 } 256 257 static inline void 258 pf_counter_u64_critical_exit(void) 259 { 260 261 } 262 263 static inline void 264 pf_counter_u64_rollup_protected(struct pf_counter_u64 *pfcu64, uint64_t n) 265 { 266 267 counter_u64_add(pfcu64->counter, n); 268 } 269 270 static inline void 271 pf_counter_u64_add_protected(struct pf_counter_u64 *pfcu64, uint32_t n) 272 { 273 274 counter_u64_add(pfcu64->counter, n); 275 } 276 277 static inline void 278 pf_counter_u64_add(struct pf_counter_u64 *pfcu64, uint32_t n) 279 { 280 281 pf_counter_u64_add_protected(pfcu64, n); 282 } 283 284 static inline u_int64_t 285 pf_counter_u64_fetch(const struct pf_counter_u64 *pfcu64) 286 { 287 288 return (counter_u64_fetch(pfcu64->counter)); 289 } 290 291 static inline void 292 pf_counter_u64_zero_protected(struct pf_counter_u64 *pfcu64) 293 { 294 295 counter_u64_zero(pfcu64->counter); 296 } 297 298 static inline void 299 pf_counter_u64_zero(struct pf_counter_u64 *pfcu64) 300 { 301 302 pf_counter_u64_zero_protected(pfcu64); 303 } 304 #endif 305 306 #define pf_get_timestamp(prule)({ \ 307 uint32_t _ts = 0; \ 308 uint32_t __ts; \ 309 int cpu; \ 310 CPU_FOREACH(cpu) { \ 311 __ts = *zpcpu_get_cpu(prule->timestamp, cpu); \ 312 if (__ts > _ts) \ 313 _ts = __ts; \ 314 } \ 315 _ts; \ 316 }) 317 318 #define pf_update_timestamp(prule) \ 319 do { \ 320 critical_enter(); \ 321 *zpcpu_get((prule)->timestamp) = time_second; \ 322 critical_exit(); \ 323 } while (0) 324 325 #define pf_timestamp_pcpu_zone (sizeof(time_t) == 4 ? pcpu_zone_4 : pcpu_zone_8) 326 _Static_assert(sizeof(time_t) == 4 || sizeof(time_t) == 8, "unexpected time_t size"); 327 328 SYSCTL_DECL(_net_pf); 329 MALLOC_DECLARE(M_PFHASH); 330 MALLOC_DECLARE(M_PF_RULE_ITEM); 331 332 SDT_PROVIDER_DECLARE(pf); 333 SDT_PROBE_DECLARE(pf, , test, reason_set); 334 SDT_PROBE_DECLARE(pf, , log, log); 335 336 #define DPFPRINTF(n, fmt, x...) \ 337 do { \ 338 SDT_PROBE2(pf, , log, log, (n), fmt); \ 339 if (V_pf_status.debug >= (n)) \ 340 printf(fmt "\n", ##x); \ 341 } while (0) 342 343 struct pfi_dynaddr { 344 TAILQ_ENTRY(pfi_dynaddr) entry; 345 struct pf_addr pfid_addr4; 346 struct pf_addr pfid_mask4; 347 struct pf_addr pfid_addr6; 348 struct pf_addr pfid_mask6; 349 struct pfr_ktable *pfid_kt; 350 struct pfi_kkif *pfid_kif; 351 int pfid_net; /* mask or 128 */ 352 int pfid_acnt4; /* address count IPv4 */ 353 int pfid_acnt6; /* address count IPv6 */ 354 sa_family_t pfid_af; /* rule af */ 355 u_int8_t pfid_iflags; /* PFI_AFLAG_* */ 356 }; 357 358 #define PF_NAME "pf" 359 360 #define PF_HASHROW_ASSERT(h) mtx_assert(&(h)->lock, MA_OWNED) 361 #define PF_HASHROW_LOCK(h) mtx_lock(&(h)->lock) 362 #define PF_HASHROW_UNLOCK(h) mtx_unlock(&(h)->lock) 363 364 #ifdef INVARIANTS 365 #define PF_STATE_LOCK(s) \ 366 do { \ 367 struct pf_kstate *_s = (s); \ 368 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(_s)]; \ 369 MPASS(_s->lock == &_ih->lock); \ 370 mtx_lock(_s->lock); \ 371 } while (0) 372 #define PF_STATE_UNLOCK(s) \ 373 do { \ 374 struct pf_kstate *_s = (s); \ 375 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(_s)]; \ 376 MPASS(_s->lock == &_ih->lock); \ 377 mtx_unlock(_s->lock); \ 378 } while (0) 379 #else 380 #define PF_STATE_LOCK(s) mtx_lock((s)->lock) 381 #define PF_STATE_UNLOCK(s) mtx_unlock((s)->lock) 382 #endif 383 384 #ifdef INVARIANTS 385 #define PF_STATE_LOCK_ASSERT(s) \ 386 do { \ 387 struct pf_kstate *_s = (s); \ 388 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(_s)]; \ 389 MPASS(_s->lock == &_ih->lock); \ 390 PF_HASHROW_ASSERT(_ih); \ 391 } while (0) 392 #else /* !INVARIANTS */ 393 #define PF_STATE_LOCK_ASSERT(s) do {} while (0) 394 #endif /* INVARIANTS */ 395 396 #ifdef INVARIANTS 397 #define PF_SRC_NODE_LOCK(sn) \ 398 do { \ 399 struct pf_ksrc_node *_sn = (sn); \ 400 struct pf_srchash *_sh = &V_pf_srchash[ \ 401 pf_hashsrc(&_sn->addr, _sn->af)]; \ 402 MPASS(_sn->lock == &_sh->lock); \ 403 mtx_lock(_sn->lock); \ 404 } while (0) 405 #define PF_SRC_NODE_UNLOCK(sn) \ 406 do { \ 407 struct pf_ksrc_node *_sn = (sn); \ 408 struct pf_srchash *_sh = &V_pf_srchash[ \ 409 pf_hashsrc(&_sn->addr, _sn->af)]; \ 410 MPASS(_sn->lock == &_sh->lock); \ 411 mtx_unlock(_sn->lock); \ 412 } while (0) 413 #else 414 #define PF_SRC_NODE_LOCK(sn) mtx_lock((sn)->lock) 415 #define PF_SRC_NODE_UNLOCK(sn) mtx_unlock((sn)->lock) 416 #endif 417 418 #ifdef INVARIANTS 419 #define PF_SRC_NODE_LOCK_ASSERT(sn) \ 420 do { \ 421 struct pf_ksrc_node *_sn = (sn); \ 422 struct pf_srchash *_sh = &V_pf_srchash[ \ 423 pf_hashsrc(&_sn->addr, _sn->af)]; \ 424 MPASS(_sn->lock == &_sh->lock); \ 425 PF_HASHROW_ASSERT(_sh); \ 426 } while (0) 427 #else /* !INVARIANTS */ 428 #define PF_SRC_NODE_LOCK_ASSERT(sn) do {} while (0) 429 #endif /* INVARIANTS */ 430 431 extern struct mtx_padalign pf_unlnkdrules_mtx; 432 #define PF_UNLNKDRULES_LOCK() mtx_lock(&pf_unlnkdrules_mtx) 433 #define PF_UNLNKDRULES_UNLOCK() mtx_unlock(&pf_unlnkdrules_mtx) 434 #define PF_UNLNKDRULES_ASSERT() mtx_assert(&pf_unlnkdrules_mtx, MA_OWNED) 435 436 extern struct sx pf_config_lock; 437 #define PF_CONFIG_LOCK() sx_xlock(&pf_config_lock) 438 #define PF_CONFIG_UNLOCK() sx_xunlock(&pf_config_lock) 439 #define PF_CONFIG_ASSERT() sx_assert(&pf_config_lock, SA_XLOCKED) 440 441 VNET_DECLARE(struct rmlock, pf_rules_lock); 442 #define V_pf_rules_lock VNET(pf_rules_lock) 443 444 #define PF_RULES_RLOCK_TRACKER struct rm_priotracker _pf_rules_tracker 445 #define PF_RULES_RLOCK() rm_rlock(&V_pf_rules_lock, &_pf_rules_tracker) 446 #define PF_RULES_RUNLOCK() rm_runlock(&V_pf_rules_lock, &_pf_rules_tracker) 447 #define PF_RULES_WLOCK() rm_wlock(&V_pf_rules_lock) 448 #define PF_RULES_WUNLOCK() rm_wunlock(&V_pf_rules_lock) 449 #define PF_RULES_WOWNED() rm_wowned(&V_pf_rules_lock) 450 #define PF_RULES_ASSERT() rm_assert(&V_pf_rules_lock, RA_LOCKED) 451 #define PF_RULES_RASSERT() rm_assert(&V_pf_rules_lock, RA_RLOCKED) 452 #define PF_RULES_WASSERT() rm_assert(&V_pf_rules_lock, RA_WLOCKED) 453 454 extern struct mtx_padalign pf_table_stats_lock; 455 #define PF_TABLE_STATS_LOCK() mtx_lock(&pf_table_stats_lock) 456 #define PF_TABLE_STATS_UNLOCK() mtx_unlock(&pf_table_stats_lock) 457 #define PF_TABLE_STATS_OWNED() mtx_owned(&pf_table_stats_lock) 458 #define PF_TABLE_STATS_ASSERT() mtx_assert(&pf_table_stats_lock, MA_OWNED) 459 460 extern struct sx pf_end_lock; 461 462 #define PF_MODVER 1 463 #define PFLOG_MODVER 1 464 #define PFSYNC_MODVER 1 465 466 #define PFLOG_MINVER 1 467 #define PFLOG_PREFVER PFLOG_MODVER 468 #define PFLOG_MAXVER 1 469 #define PFSYNC_MINVER 1 470 #define PFSYNC_PREFVER PFSYNC_MODVER 471 #define PFSYNC_MAXVER 1 472 473 #ifdef INET 474 #ifndef INET6 475 #define PF_INET_ONLY 476 #endif /* ! INET6 */ 477 #endif /* INET */ 478 479 #ifdef INET6 480 #ifndef INET 481 #define PF_INET6_ONLY 482 #endif /* ! INET */ 483 #endif /* INET6 */ 484 485 #ifdef INET 486 #ifdef INET6 487 #define PF_INET_INET6 488 #endif /* INET6 */ 489 #endif /* INET */ 490 491 #else 492 493 #define PF_INET_INET6 494 495 #endif /* _KERNEL */ 496 497 /* Both IPv4 and IPv6 */ 498 #ifdef PF_INET_INET6 499 500 #define PF_AEQ(a, b, c) \ 501 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \ 502 (c == AF_INET6 && (a)->addr32[3] == (b)->addr32[3] && \ 503 (a)->addr32[2] == (b)->addr32[2] && \ 504 (a)->addr32[1] == (b)->addr32[1] && \ 505 (a)->addr32[0] == (b)->addr32[0])) \ 506 507 #define PF_ANEQ(a, b, c) \ 508 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \ 509 (c == AF_INET6 && ((a)->addr32[0] != (b)->addr32[0] || \ 510 (a)->addr32[1] != (b)->addr32[1] || \ 511 (a)->addr32[2] != (b)->addr32[2] || \ 512 (a)->addr32[3] != (b)->addr32[3]))) \ 513 514 #define PF_AZERO(a, c) \ 515 ((c == AF_INET && !(a)->addr32[0]) || \ 516 (c == AF_INET6 && !(a)->addr32[0] && !(a)->addr32[1] && \ 517 !(a)->addr32[2] && !(a)->addr32[3] )) \ 518 519 #else 520 521 /* Just IPv6 */ 522 523 #ifdef PF_INET6_ONLY 524 525 #define PF_AEQ(a, b, c) \ 526 ((a)->addr32[3] == (b)->addr32[3] && \ 527 (a)->addr32[2] == (b)->addr32[2] && \ 528 (a)->addr32[1] == (b)->addr32[1] && \ 529 (a)->addr32[0] == (b)->addr32[0]) \ 530 531 #define PF_ANEQ(a, b, c) \ 532 ((a)->addr32[3] != (b)->addr32[3] || \ 533 (a)->addr32[2] != (b)->addr32[2] || \ 534 (a)->addr32[1] != (b)->addr32[1] || \ 535 (a)->addr32[0] != (b)->addr32[0]) \ 536 537 #define PF_AZERO(a, c) \ 538 (!(a)->addr32[0] && \ 539 !(a)->addr32[1] && \ 540 !(a)->addr32[2] && \ 541 !(a)->addr32[3] ) \ 542 543 #else 544 545 /* Just IPv4 */ 546 #ifdef PF_INET_ONLY 547 548 #define PF_AEQ(a, b, c) \ 549 ((a)->addr32[0] == (b)->addr32[0]) 550 551 #define PF_ANEQ(a, b, c) \ 552 ((a)->addr32[0] != (b)->addr32[0]) 553 554 #define PF_AZERO(a, c) \ 555 (!(a)->addr32[0]) 556 557 #endif /* PF_INET_ONLY */ 558 #endif /* PF_INET6_ONLY */ 559 #endif /* PF_INET_INET6 */ 560 561 #ifdef _KERNEL 562 563 void unhandled_af(int) __dead2; 564 565 static void inline 566 pf_addrcpy(struct pf_addr *dst, const struct pf_addr *src, sa_family_t af) 567 { 568 switch (af) { 569 #ifdef INET 570 case AF_INET: 571 memcpy(&dst->v4, &src->v4, sizeof(dst->v4)); 572 break; 573 #endif /* INET */ 574 #ifdef INET6 575 case AF_INET6: 576 memcpy(&dst->v6, &src->v6, sizeof(dst->v6)); 577 break; 578 #endif /* INET6 */ 579 default: 580 unhandled_af(af); 581 } 582 } 583 #endif 584 585 /* 586 * XXX callers not FIB-aware in our version of pf yet. 587 * OpenBSD fixed it later it seems, 2010/05/07 13:33:16 claudio. 588 */ 589 #define PF_MISMATCHAW(aw, x, af, neg, ifp, rtid) \ 590 ( \ 591 (((aw)->type == PF_ADDR_NOROUTE && \ 592 pf_routable((x), (af), NULL, (rtid))) || \ 593 (((aw)->type == PF_ADDR_URPFFAILED && (ifp) != NULL && \ 594 pf_routable((x), (af), (ifp), (rtid))) || \ 595 ((aw)->type == PF_ADDR_TABLE && \ 596 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \ 597 ((aw)->type == PF_ADDR_DYNIFTL && \ 598 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \ 599 ((aw)->type == PF_ADDR_RANGE && \ 600 !pf_match_addr_range(&(aw)->v.a.addr, \ 601 &(aw)->v.a.mask, (x), (af))) || \ 602 ((aw)->type == PF_ADDR_ADDRMASK && \ 603 !PF_AZERO(&(aw)->v.a.mask, (af)) && \ 604 !pf_match_addr(0, &(aw)->v.a.addr, \ 605 &(aw)->v.a.mask, (x), (af))))) != \ 606 (neg) \ 607 ) 608 609 #define PF_ALGNMNT(off) (((off) % 2) == 0) 610 611 /* 612 * At the moment there are no rules which have both NAT and RDR actions, 613 * apart from af-to rules, but those don't to source tracking for address 614 * translation. And the r->rdr pool is used for both NAT and RDR. 615 * So there is no PF_SN_RDR. 616 */ 617 enum pf_sn_types { PF_SN_LIMIT, PF_SN_NAT, PF_SN_ROUTE, PF_SN_MAX }; 618 typedef enum pf_sn_types pf_sn_types_t; 619 #define PF_SN_TYPE_NAMES { \ 620 "limit source-track", \ 621 "NAT/RDR sticky-address", \ 622 "route sticky-address", \ 623 NULL \ 624 } 625 626 #ifdef _KERNEL 627 628 struct pf_kpooladdr { 629 struct pf_addr_wrap addr; 630 TAILQ_ENTRY(pf_kpooladdr) entries; 631 char ifname[IFNAMSIZ]; 632 sa_family_t af; 633 struct pfi_kkif *kif; 634 }; 635 636 TAILQ_HEAD(pf_kpalist, pf_kpooladdr); 637 638 struct pf_kpool { 639 struct mtx mtx; 640 struct pf_kpalist list; 641 struct pf_kpooladdr *cur; 642 struct pf_poolhashkey key; 643 struct pf_addr counter; 644 struct pf_mape_portset mape; 645 int tblidx; 646 u_int16_t proxy_port[2]; 647 u_int8_t opts; 648 }; 649 650 struct pf_rule_actions { 651 struct pf_addr rt_addr; 652 struct pfi_kkif *rt_kif; 653 int32_t rtableid; 654 uint32_t flags; 655 uint16_t qid; 656 uint16_t pqid; 657 uint16_t max_mss; 658 uint16_t dnpipe; 659 uint16_t dnrpipe; /* Reverse direction pipe */ 660 sa_family_t rt_af; 661 uint8_t log; 662 uint8_t set_tos; 663 uint8_t min_ttl; 664 uint8_t set_prio[2]; 665 uint8_t rt; 666 uint8_t allow_opts; 667 uint16_t max_pkt_size; 668 }; 669 670 union pf_keth_rule_ptr { 671 struct pf_keth_rule *ptr; 672 uint32_t nr; 673 }; 674 675 struct pf_keth_rule_addr { 676 uint8_t addr[ETHER_ADDR_LEN]; 677 uint8_t mask[ETHER_ADDR_LEN]; 678 bool neg; 679 uint8_t isset; 680 }; 681 682 struct pf_keth_anchor; 683 684 TAILQ_HEAD(pf_keth_ruleq, pf_keth_rule); 685 686 struct pf_keth_ruleset { 687 struct pf_keth_ruleq rules[2]; 688 struct pf_keth_rules { 689 struct pf_keth_ruleq *rules; 690 int open; 691 uint32_t ticket; 692 } active, inactive; 693 struct vnet *vnet; 694 struct pf_keth_anchor *anchor; 695 }; 696 697 RB_HEAD(pf_keth_anchor_global, pf_keth_anchor); 698 RB_HEAD(pf_keth_anchor_node, pf_keth_anchor); 699 struct pf_keth_anchor { 700 RB_ENTRY(pf_keth_anchor) entry_node; 701 RB_ENTRY(pf_keth_anchor) entry_global; 702 struct pf_keth_anchor *parent; 703 struct pf_keth_anchor_node children; 704 char name[PF_ANCHOR_NAME_SIZE]; 705 char path[MAXPATHLEN]; 706 struct pf_keth_ruleset ruleset; 707 int refcnt; /* anchor rules */ 708 uint8_t anchor_relative; 709 uint8_t anchor_wildcard; 710 }; 711 RB_PROTOTYPE(pf_keth_anchor_node, pf_keth_anchor, entry_node, 712 pf_keth_anchor_compare); 713 RB_PROTOTYPE(pf_keth_anchor_global, pf_keth_anchor, entry_global, 714 pf_keth_anchor_compare); 715 716 struct pf_keth_rule { 717 #define PFE_SKIP_IFP 0 718 #define PFE_SKIP_DIR 1 719 #define PFE_SKIP_PROTO 2 720 #define PFE_SKIP_SRC_ADDR 3 721 #define PFE_SKIP_DST_ADDR 4 722 #define PFE_SKIP_SRC_IP_ADDR 5 723 #define PFE_SKIP_DST_IP_ADDR 6 724 #define PFE_SKIP_COUNT 7 725 union pf_keth_rule_ptr skip[PFE_SKIP_COUNT]; 726 727 TAILQ_ENTRY(pf_keth_rule) entries; 728 729 struct pf_keth_anchor *anchor; 730 u_int8_t anchor_relative; 731 u_int8_t anchor_wildcard; 732 733 uint32_t nr; 734 735 bool quick; 736 737 /* Filter */ 738 char ifname[IFNAMSIZ]; 739 struct pfi_kkif *kif; 740 bool ifnot; 741 uint8_t direction; 742 uint16_t proto; 743 struct pf_keth_rule_addr src, dst; 744 struct pf_rule_addr ipsrc, ipdst; 745 char match_tagname[PF_TAG_NAME_SIZE]; 746 uint16_t match_tag; 747 bool match_tag_not; 748 749 750 /* Stats */ 751 counter_u64_t evaluations; 752 counter_u64_t packets[2]; 753 counter_u64_t bytes[2]; 754 time_t *timestamp; 755 756 /* Action */ 757 char qname[PF_QNAME_SIZE]; 758 int qid; 759 char tagname[PF_TAG_NAME_SIZE]; 760 uint16_t tag; 761 char bridge_to_name[IFNAMSIZ]; 762 struct pfi_kkif *bridge_to; 763 uint8_t action; 764 uint16_t dnpipe; 765 uint32_t dnflags; 766 767 char label[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE]; 768 uint32_t ridentifier; 769 }; 770 771 struct pf_kthreshold { 772 uint32_t limit; 773 uint32_t seconds; 774 struct counter_rate *cr; 775 }; 776 777 RB_HEAD(pf_krule_global, pf_krule); 778 RB_PROTOTYPE(pf_krule_global, pf_krule, entry_global, pf_krule_compare); 779 780 struct pf_krule { 781 struct pf_rule_addr src; 782 struct pf_rule_addr dst; 783 struct pf_krule *skip[PF_SKIP_COUNT]; 784 char label[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE]; 785 uint32_t ridentifier; 786 char ifname[IFNAMSIZ]; 787 char rcv_ifname[IFNAMSIZ]; 788 char qname[PF_QNAME_SIZE]; 789 char pqname[PF_QNAME_SIZE]; 790 char tagname[PF_TAG_NAME_SIZE]; 791 char match_tagname[PF_TAG_NAME_SIZE]; 792 793 char overload_tblname[PF_TABLE_NAME_SIZE]; 794 795 TAILQ_ENTRY(pf_krule) entries; 796 struct pf_kpool nat; 797 struct pf_kpool rdr; 798 struct pf_kpool route; 799 struct pf_kthreshold pktrate; 800 801 struct pf_counter_u64 evaluations; 802 struct pf_counter_u64 packets[2]; 803 struct pf_counter_u64 bytes[2]; 804 time_t *timestamp; 805 806 struct pfi_kkif *kif; 807 struct pfi_kkif *rcv_kif; 808 struct pf_kanchor *anchor; 809 struct pfr_ktable *overload_tbl; 810 811 pf_osfp_t os_fingerprint; 812 813 int32_t rtableid; 814 u_int32_t timeout[PFTM_MAX]; 815 u_int32_t max_states; 816 u_int32_t max_src_nodes; 817 u_int32_t max_src_states; 818 u_int32_t max_src_conn; 819 struct { 820 u_int32_t limit; 821 u_int32_t seconds; 822 } max_src_conn_rate; 823 uint16_t max_pkt_size; 824 u_int16_t qid; 825 u_int16_t pqid; 826 u_int16_t dnpipe; 827 u_int16_t dnrpipe; 828 u_int32_t free_flags; 829 u_int32_t nr; 830 u_int32_t prob; 831 uid_t cuid; 832 pid_t cpid; 833 834 counter_u64_t states_cur; 835 counter_u64_t states_tot; 836 counter_u64_t src_nodes[PF_SN_MAX]; 837 838 u_int16_t return_icmp; 839 u_int16_t return_icmp6; 840 u_int16_t max_mss; 841 u_int16_t tag; 842 u_int16_t match_tag; 843 u_int16_t scrub_flags; 844 845 struct pf_rule_uid uid; 846 struct pf_rule_gid gid; 847 848 u_int32_t rule_flag; 849 uint32_t rule_ref; 850 u_int8_t action; 851 u_int8_t direction; 852 u_int8_t log; 853 u_int8_t logif; 854 u_int8_t quick; 855 u_int8_t ifnot; 856 u_int8_t match_tag_not; 857 u_int8_t natpass; 858 859 u_int8_t keep_state; 860 sa_family_t af; 861 u_int8_t proto; 862 u_int8_t type; 863 u_int8_t code; 864 u_int8_t flags; 865 u_int8_t flagset; 866 u_int8_t min_ttl; 867 u_int8_t allow_opts; 868 u_int8_t rt; 869 u_int8_t return_ttl; 870 u_int8_t tos; 871 u_int8_t set_tos; 872 u_int8_t anchor_relative; 873 u_int8_t anchor_wildcard; 874 875 u_int8_t flush; 876 u_int8_t prio; 877 u_int8_t set_prio[2]; 878 sa_family_t naf; 879 u_int8_t rcvifnot; 880 881 struct { 882 struct pf_addr addr; 883 u_int16_t port; 884 } divert; 885 u_int8_t md5sum[PF_MD5_DIGEST_LENGTH]; 886 RB_ENTRY(pf_krule) entry_global; 887 888 #ifdef PF_WANT_32_TO_64_COUNTER 889 LIST_ENTRY(pf_krule) allrulelist; 890 bool allrulelinked; 891 #endif 892 }; 893 894 struct pf_krule_item { 895 SLIST_ENTRY(pf_krule_item) entry; 896 struct pf_krule *r; 897 }; 898 899 SLIST_HEAD(pf_krule_slist, pf_krule_item); 900 901 struct pf_ksrc_node { 902 LIST_ENTRY(pf_ksrc_node) entry; 903 struct pf_addr addr; 904 struct pf_addr raddr; 905 struct pf_krule_slist match_rules; 906 struct pf_krule *rule; 907 struct pfi_kkif *rkif; 908 counter_u64_t bytes[2]; 909 counter_u64_t packets[2]; 910 u_int32_t states; 911 u_int32_t conn; 912 struct pf_kthreshold conn_rate; 913 u_int32_t creation; 914 u_int32_t expire; 915 sa_family_t af; 916 sa_family_t raf; 917 u_int8_t ruletype; 918 pf_sn_types_t type; 919 struct mtx *lock; 920 }; 921 #endif 922 923 struct pf_state_scrub { 924 struct timeval pfss_last; /* time received last packet */ 925 u_int32_t pfss_tsecr; /* last echoed timestamp */ 926 u_int32_t pfss_tsval; /* largest timestamp */ 927 u_int32_t pfss_tsval0; /* original timestamp */ 928 u_int16_t pfss_flags; 929 #define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */ 930 #define PFSS_PAWS 0x0010 /* stricter PAWS checks */ 931 #define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */ 932 #define PFSS_DATA_TS 0x0040 /* timestamp on data packets */ 933 #define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */ 934 u_int8_t pfss_ttl; /* stashed TTL */ 935 u_int8_t pad; 936 union { 937 u_int32_t pfss_ts_mod; /* timestamp modulation */ 938 u_int32_t pfss_v_tag; /* SCTP verification tag */ 939 }; 940 }; 941 942 struct pf_state_host { 943 struct pf_addr addr; 944 u_int16_t port; 945 u_int16_t pad; 946 }; 947 948 struct pf_state_peer { 949 struct pf_state_scrub *scrub; /* state is scrubbed */ 950 u_int32_t seqlo; /* Max sequence number sent */ 951 u_int32_t seqhi; /* Max the other end ACKd + win */ 952 u_int32_t seqdiff; /* Sequence number modulator */ 953 u_int16_t max_win; /* largest window (pre scaling) */ 954 u_int16_t mss; /* Maximum segment size option */ 955 u_int8_t state; /* active state level */ 956 u_int8_t wscale; /* window scaling factor */ 957 u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */ 958 u_int8_t pad[1]; 959 }; 960 961 /* Keep synced with struct pf_udp_endpoint. */ 962 struct pf_udp_endpoint_cmp { 963 struct pf_addr addr; 964 uint16_t port; 965 sa_family_t af; 966 uint8_t pad[1]; 967 }; 968 969 struct pf_udp_endpoint { 970 struct pf_addr addr; 971 uint16_t port; 972 sa_family_t af; 973 uint8_t pad[1]; 974 975 struct pf_udp_mapping *mapping; 976 LIST_ENTRY(pf_udp_endpoint) entry; 977 }; 978 979 struct pf_udp_mapping { 980 struct pf_udp_endpoint endpoints[2]; 981 u_int refs; 982 }; 983 984 /* Keep synced with struct pf_state_key. */ 985 struct pf_state_key_cmp { 986 struct pf_addr addr[2]; 987 u_int16_t port[2]; 988 sa_family_t af; 989 u_int8_t proto; 990 u_int8_t pad[2]; 991 }; 992 993 struct pf_state_key { 994 struct pf_addr addr[2]; 995 u_int16_t port[2]; 996 sa_family_t af; 997 u_int8_t proto; 998 u_int8_t pad[2]; 999 1000 LIST_ENTRY(pf_state_key) entry; 1001 TAILQ_HEAD(, pf_kstate) states[2]; 1002 }; 1003 1004 #define PF_REVERSED_KEY(state, family) \ 1005 (((state)->key[PF_SK_WIRE]->af != (state)->key[PF_SK_STACK]->af) && \ 1006 ((state)->key[PF_SK_WIRE]->af != (family)) && \ 1007 ((state)->direction == PF_IN)) 1008 1009 /* Keep synced with struct pf_kstate. */ 1010 struct pf_state_cmp { 1011 u_int64_t id; 1012 u_int32_t creatorid; 1013 u_int8_t direction; 1014 u_int8_t pad[3]; 1015 }; 1016 1017 struct pf_state_scrub_export { 1018 uint16_t pfss_flags; 1019 uint8_t pfss_ttl; /* stashed TTL */ 1020 #define PF_SCRUB_FLAG_VALID 0x01 1021 uint8_t scrub_flag; 1022 uint32_t pfss_ts_mod; /* timestamp modulation */ 1023 }; 1024 1025 struct pf_state_key_export { 1026 struct pf_addr addr[2]; 1027 uint16_t port[2]; 1028 }; 1029 1030 struct pf_state_peer_export { 1031 struct pf_state_scrub_export scrub; /* state is scrubbed */ 1032 uint32_t seqlo; /* Max sequence number sent */ 1033 uint32_t seqhi; /* Max the other end ACKd + win */ 1034 uint32_t seqdiff; /* Sequence number modulator */ 1035 uint16_t max_win; /* largest window (pre scaling) */ 1036 uint16_t mss; /* Maximum segment size option */ 1037 uint8_t state; /* active state level */ 1038 uint8_t wscale; /* window scaling factor */ 1039 uint8_t dummy[6]; 1040 }; 1041 _Static_assert(sizeof(struct pf_state_peer_export) == 32, "size incorrect"); 1042 1043 struct pf_state_export { 1044 uint64_t version; 1045 #define PF_STATE_VERSION 20230404 1046 uint64_t id; 1047 char ifname[IFNAMSIZ]; 1048 char orig_ifname[IFNAMSIZ]; 1049 struct pf_state_key_export key[2]; 1050 struct pf_state_peer_export src; 1051 struct pf_state_peer_export dst; 1052 struct pf_addr rt_addr; 1053 uint32_t rule; 1054 uint32_t anchor; 1055 uint32_t nat_rule; 1056 uint32_t creation; 1057 uint32_t expire; 1058 uint32_t spare0; 1059 uint64_t packets[2]; 1060 uint64_t bytes[2]; 1061 uint32_t creatorid; 1062 uint32_t spare1; 1063 sa_family_t af; 1064 uint8_t proto; 1065 uint8_t direction; 1066 uint8_t log; 1067 uint8_t state_flags_compat; 1068 uint8_t timeout; 1069 uint8_t sync_flags; 1070 uint8_t updates; 1071 uint16_t state_flags; 1072 uint16_t qid; 1073 uint16_t pqid; 1074 uint16_t dnpipe; 1075 uint16_t dnrpipe; 1076 int32_t rtableid; 1077 uint8_t min_ttl; 1078 uint8_t set_tos; 1079 uint16_t max_mss; 1080 uint8_t set_prio[2]; 1081 uint8_t rt; 1082 char rt_ifname[IFNAMSIZ]; 1083 1084 uint8_t spare[72]; 1085 }; 1086 _Static_assert(sizeof(struct pf_state_export) == 384, "size incorrect"); 1087 1088 #ifdef _KERNEL 1089 struct pf_kstate { 1090 /* 1091 * Area shared with pf_state_cmp 1092 */ 1093 u_int64_t id; 1094 u_int32_t creatorid; 1095 u_int8_t direction; 1096 u_int8_t pad[3]; 1097 /* 1098 * end of the area 1099 */ 1100 1101 u_int16_t state_flags; 1102 u_int8_t timeout; 1103 u_int8_t sync_state; /* PFSYNC_S_x */ 1104 u_int8_t sync_updates; 1105 u_int refs; 1106 struct mtx *lock; 1107 TAILQ_ENTRY(pf_kstate) sync_list; 1108 TAILQ_ENTRY(pf_kstate) key_list[2]; 1109 LIST_ENTRY(pf_kstate) entry; 1110 struct pf_state_peer src; 1111 struct pf_state_peer dst; 1112 struct pf_krule_slist match_rules; 1113 struct pf_krule *rule; 1114 struct pf_krule *anchor; 1115 struct pf_krule *nat_rule; 1116 struct pf_state_key *key[2]; /* addresses stack and wire */ 1117 struct pf_udp_mapping *udp_mapping; 1118 struct pfi_kkif *kif; 1119 struct pfi_kkif *orig_kif; /* The real kif, even if we're a floating state (i.e. if == V_pfi_all). */ 1120 struct pf_ksrc_node *sns[PF_SN_MAX];/* source nodes */ 1121 u_int64_t packets[2]; 1122 u_int64_t bytes[2]; 1123 u_int64_t creation; 1124 u_int64_t expire; 1125 u_int32_t pfsync_time; 1126 struct pf_rule_actions act; 1127 u_int16_t tag; 1128 u_int16_t if_index_in; 1129 u_int16_t if_index_out; 1130 }; 1131 1132 /* 1133 * 6 cache lines per struct, 10 structs per page. 1134 * Try to not grow the struct beyond that. 1135 */ 1136 _Static_assert(sizeof(struct pf_kstate) <= 384, "pf_kstate size crosses 384 bytes"); 1137 1138 enum pf_test_status { 1139 PF_TEST_FAIL = -1, 1140 PF_TEST_OK, 1141 PF_TEST_QUICK 1142 }; 1143 1144 struct pf_test_ctx { 1145 enum pf_test_status test_status; 1146 struct pf_pdesc *pd; 1147 struct pf_rule_actions act; 1148 uint8_t icmpcode; 1149 uint8_t icmptype; 1150 int icmp_dir; 1151 int state_icmp; 1152 int tag; 1153 int rewrite; 1154 u_short reason; 1155 struct pf_src_node *sns[PF_SN_MAX]; 1156 struct pf_krule_slist rules; 1157 struct pf_krule *nr; 1158 struct pf_krule *tr; 1159 struct pf_krule **rm; 1160 struct pf_krule *a; 1161 struct pf_krule **am; 1162 struct pf_kruleset **rsm; 1163 struct pf_kruleset *arsm; 1164 struct pf_kruleset *aruleset; 1165 struct pf_state_key *sk; 1166 struct pf_state_key *nk; 1167 struct tcphdr *th; 1168 struct pf_udp_mapping *udp_mapping; 1169 struct pf_kpool *nat_pool; 1170 uint16_t virtual_type; 1171 uint16_t virtual_id; 1172 int depth; 1173 }; 1174 1175 #define PF_ANCHOR_STACK_MAX 32 1176 #endif 1177 1178 /* 1179 * Unified state structures for pulling states out of the kernel 1180 * used by pfsync(4) and the pf(4) ioctl. 1181 */ 1182 struct pfsync_state_scrub { 1183 u_int16_t pfss_flags; 1184 u_int8_t pfss_ttl; /* stashed TTL */ 1185 #define PFSYNC_SCRUB_FLAG_VALID 0x01 1186 u_int8_t scrub_flag; 1187 u_int32_t pfss_ts_mod; /* timestamp modulation */ 1188 } __packed; 1189 1190 struct pfsync_state_peer { 1191 struct pfsync_state_scrub scrub; /* state is scrubbed */ 1192 u_int32_t seqlo; /* Max sequence number sent */ 1193 u_int32_t seqhi; /* Max the other end ACKd + win */ 1194 u_int32_t seqdiff; /* Sequence number modulator */ 1195 u_int16_t max_win; /* largest window (pre scaling) */ 1196 u_int16_t mss; /* Maximum segment size option */ 1197 u_int8_t state; /* active state level */ 1198 u_int8_t wscale; /* window scaling factor */ 1199 u_int8_t pad[6]; 1200 } __packed; 1201 1202 struct pfsync_state_key { 1203 struct pf_addr addr[2]; 1204 u_int16_t port[2]; 1205 }; 1206 1207 struct pfsync_state_1301 { 1208 u_int64_t id; 1209 char ifname[IFNAMSIZ]; 1210 struct pfsync_state_key key[2]; 1211 struct pfsync_state_peer src; 1212 struct pfsync_state_peer dst; 1213 struct pf_addr rt_addr; 1214 u_int32_t rule; 1215 u_int32_t anchor; 1216 u_int32_t nat_rule; 1217 u_int32_t creation; 1218 u_int32_t expire; 1219 u_int32_t packets[2][2]; 1220 u_int32_t bytes[2][2]; 1221 u_int32_t creatorid; 1222 sa_family_t af; 1223 u_int8_t proto; 1224 u_int8_t direction; 1225 u_int8_t __spare[2]; 1226 u_int8_t log; 1227 u_int8_t state_flags; 1228 u_int8_t timeout; 1229 u_int8_t sync_flags; 1230 u_int8_t updates; 1231 } __packed; 1232 1233 struct pfsync_state_1400 { 1234 /* The beginning of the struct is compatible with previous versions */ 1235 u_int64_t id; 1236 char ifname[IFNAMSIZ]; 1237 struct pfsync_state_key key[2]; 1238 struct pfsync_state_peer src; 1239 struct pfsync_state_peer dst; 1240 struct pf_addr rt_addr; 1241 u_int32_t rule; 1242 u_int32_t anchor; 1243 u_int32_t nat_rule; 1244 u_int32_t creation; 1245 u_int32_t expire; 1246 u_int32_t packets[2][2]; 1247 u_int32_t bytes[2][2]; 1248 u_int32_t creatorid; 1249 sa_family_t af; 1250 u_int8_t proto; 1251 u_int8_t direction; 1252 u_int16_t state_flags; 1253 u_int8_t log; 1254 u_int8_t __spare; 1255 u_int8_t timeout; 1256 u_int8_t sync_flags; 1257 u_int8_t updates; 1258 /* The rest is not */ 1259 u_int16_t qid; 1260 u_int16_t pqid; 1261 u_int16_t dnpipe; 1262 u_int16_t dnrpipe; 1263 int32_t rtableid; 1264 u_int8_t min_ttl; 1265 u_int8_t set_tos; 1266 u_int16_t max_mss; 1267 u_int8_t set_prio[2]; 1268 u_int8_t rt; 1269 char rt_ifname[IFNAMSIZ]; 1270 1271 } __packed; 1272 1273 union pfsync_state_union { 1274 struct pfsync_state_1301 pfs_1301; 1275 struct pfsync_state_1400 pfs_1400; 1276 } __packed; 1277 1278 #ifdef _KERNEL 1279 /* pfsync */ 1280 typedef int pfsync_state_import_t(union pfsync_state_union *, int, int); 1281 typedef void pfsync_insert_state_t(struct pf_kstate *); 1282 typedef void pfsync_update_state_t(struct pf_kstate *); 1283 typedef void pfsync_delete_state_t(struct pf_kstate *); 1284 typedef void pfsync_clear_states_t(u_int32_t, const char *); 1285 typedef int pfsync_defer_t(struct pf_kstate *, struct mbuf *); 1286 typedef void pfsync_detach_ifnet_t(struct ifnet *); 1287 typedef void pflow_export_state_t(const struct pf_kstate *); 1288 typedef bool pf_addr_filter_func_t(const sa_family_t, const struct pf_addr *); 1289 1290 VNET_DECLARE(pfsync_state_import_t *, pfsync_state_import_ptr); 1291 #define V_pfsync_state_import_ptr VNET(pfsync_state_import_ptr) 1292 VNET_DECLARE(pfsync_insert_state_t *, pfsync_insert_state_ptr); 1293 #define V_pfsync_insert_state_ptr VNET(pfsync_insert_state_ptr) 1294 VNET_DECLARE(pfsync_update_state_t *, pfsync_update_state_ptr); 1295 #define V_pfsync_update_state_ptr VNET(pfsync_update_state_ptr) 1296 VNET_DECLARE(pfsync_delete_state_t *, pfsync_delete_state_ptr); 1297 #define V_pfsync_delete_state_ptr VNET(pfsync_delete_state_ptr) 1298 VNET_DECLARE(pfsync_clear_states_t *, pfsync_clear_states_ptr); 1299 #define V_pfsync_clear_states_ptr VNET(pfsync_clear_states_ptr) 1300 VNET_DECLARE(pfsync_defer_t *, pfsync_defer_ptr); 1301 #define V_pfsync_defer_ptr VNET(pfsync_defer_ptr) 1302 VNET_DECLARE(pflow_export_state_t *, pflow_export_state_ptr); 1303 #define V_pflow_export_state_ptr VNET(pflow_export_state_ptr) 1304 extern pfsync_detach_ifnet_t *pfsync_detach_ifnet_ptr; 1305 1306 void pfsync_state_export(union pfsync_state_union *, 1307 struct pf_kstate *, int); 1308 void pf_state_export(struct pf_state_export *, 1309 struct pf_kstate *); 1310 1311 /* pflog */ 1312 struct pf_kruleset; 1313 struct pf_pdesc; 1314 typedef int pflog_packet_t(uint8_t, u_int8_t, 1315 struct pf_krule *, struct pf_krule *, struct pf_kruleset *, 1316 struct pf_pdesc *, int, struct pf_krule *); 1317 extern pflog_packet_t *pflog_packet_ptr; 1318 1319 #endif /* _KERNEL */ 1320 1321 #define PFSYNC_FLAG_SRCNODE 0x04 1322 #define PFSYNC_FLAG_NATSRCNODE 0x08 1323 1324 /* for copies to/from network byte order */ 1325 /* ioctl interface also uses network byte order */ 1326 #define pf_state_peer_hton(s,d) do { \ 1327 (d)->seqlo = htonl((s)->seqlo); \ 1328 (d)->seqhi = htonl((s)->seqhi); \ 1329 (d)->seqdiff = htonl((s)->seqdiff); \ 1330 (d)->max_win = htons((s)->max_win); \ 1331 (d)->mss = htons((s)->mss); \ 1332 (d)->state = (s)->state; \ 1333 (d)->wscale = (s)->wscale; \ 1334 if ((s)->scrub) { \ 1335 (d)->scrub.pfss_flags = \ 1336 htons((s)->scrub->pfss_flags & PFSS_TIMESTAMP); \ 1337 (d)->scrub.pfss_ttl = (s)->scrub->pfss_ttl; \ 1338 (d)->scrub.pfss_ts_mod = htonl((s)->scrub->pfss_ts_mod);\ 1339 (d)->scrub.scrub_flag = PFSYNC_SCRUB_FLAG_VALID; \ 1340 } \ 1341 } while (0) 1342 1343 #define pf_state_peer_ntoh(s,d) do { \ 1344 (d)->seqlo = ntohl((s)->seqlo); \ 1345 (d)->seqhi = ntohl((s)->seqhi); \ 1346 (d)->seqdiff = ntohl((s)->seqdiff); \ 1347 (d)->max_win = ntohs((s)->max_win); \ 1348 (d)->mss = ntohs((s)->mss); \ 1349 (d)->state = (s)->state; \ 1350 (d)->wscale = (s)->wscale; \ 1351 if ((s)->scrub.scrub_flag == PFSYNC_SCRUB_FLAG_VALID && \ 1352 (d)->scrub != NULL) { \ 1353 (d)->scrub->pfss_flags = \ 1354 ntohs((s)->scrub.pfss_flags) & PFSS_TIMESTAMP; \ 1355 (d)->scrub->pfss_ttl = (s)->scrub.pfss_ttl; \ 1356 (d)->scrub->pfss_ts_mod = ntohl((s)->scrub.pfss_ts_mod);\ 1357 } \ 1358 } while (0) 1359 1360 #define pf_state_counter_hton(s,d) do { \ 1361 d[0] = htonl((s>>32)&0xffffffff); \ 1362 d[1] = htonl(s&0xffffffff); \ 1363 } while (0) 1364 1365 #define pf_state_counter_from_pfsync(s) \ 1366 (((u_int64_t)(s[0])<<32) | (u_int64_t)(s[1])) 1367 1368 #define pf_state_counter_ntoh(s,d) do { \ 1369 d = ntohl(s[0]); \ 1370 d = d<<32; \ 1371 d += ntohl(s[1]); \ 1372 } while (0) 1373 1374 TAILQ_HEAD(pf_krulequeue, pf_krule); 1375 1376 struct pf_kanchor; 1377 1378 struct pf_kruleset { 1379 struct { 1380 struct pf_krulequeue queues[2]; 1381 struct { 1382 struct pf_krulequeue *ptr; 1383 u_int32_t rcount; 1384 u_int32_t ticket; 1385 int open; 1386 struct pf_krule_global *tree; 1387 } active, inactive; 1388 } rules[PF_RULESET_MAX]; 1389 struct pf_kanchor *anchor; 1390 u_int32_t tticket; 1391 int tables; 1392 int topen; 1393 }; 1394 1395 RB_HEAD(pf_kanchor_global, pf_kanchor); 1396 RB_HEAD(pf_kanchor_node, pf_kanchor); 1397 struct pf_kanchor { 1398 RB_ENTRY(pf_kanchor) entry_global; 1399 RB_ENTRY(pf_kanchor) entry_node; 1400 struct pf_kanchor *parent; 1401 struct pf_kanchor_node children; 1402 char name[PF_ANCHOR_NAME_SIZE]; 1403 char path[MAXPATHLEN]; 1404 struct pf_kruleset ruleset; 1405 int refcnt; /* anchor rules */ 1406 }; 1407 RB_PROTOTYPE(pf_kanchor_global, pf_kanchor, entry_global, pf_anchor_compare); 1408 RB_PROTOTYPE(pf_kanchor_node, pf_kanchor, entry_node, pf_kanchor_compare); 1409 1410 #define PF_RESERVED_ANCHOR "_pf" 1411 1412 #define PFR_TFLAG_PERSIST 0x00000001 1413 #define PFR_TFLAG_CONST 0x00000002 1414 #define PFR_TFLAG_ACTIVE 0x00000004 1415 #define PFR_TFLAG_INACTIVE 0x00000008 1416 #define PFR_TFLAG_REFERENCED 0x00000010 1417 #define PFR_TFLAG_REFDANCHOR 0x00000020 1418 #define PFR_TFLAG_COUNTERS 0x00000040 1419 /* Adjust masks below when adding flags. */ 1420 #define PFR_TFLAG_USRMASK (PFR_TFLAG_PERSIST | \ 1421 PFR_TFLAG_CONST | \ 1422 PFR_TFLAG_COUNTERS) 1423 #define PFR_TFLAG_SETMASK (PFR_TFLAG_ACTIVE | \ 1424 PFR_TFLAG_INACTIVE | \ 1425 PFR_TFLAG_REFERENCED | \ 1426 PFR_TFLAG_REFDANCHOR) 1427 #define PFR_TFLAG_ALLMASK (PFR_TFLAG_PERSIST | \ 1428 PFR_TFLAG_CONST | \ 1429 PFR_TFLAG_ACTIVE | \ 1430 PFR_TFLAG_INACTIVE | \ 1431 PFR_TFLAG_REFERENCED | \ 1432 PFR_TFLAG_REFDANCHOR | \ 1433 PFR_TFLAG_COUNTERS) 1434 1435 struct pf_keth_anchor_stackframe; 1436 1437 struct pfr_table { 1438 char pfrt_anchor[MAXPATHLEN]; 1439 char pfrt_name[PF_TABLE_NAME_SIZE]; 1440 u_int32_t pfrt_flags; 1441 u_int8_t pfrt_fback; 1442 }; 1443 1444 enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED, 1445 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE, 1446 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_NOCOUNT, PFR_FB_MAX }; 1447 1448 struct pfr_addr { 1449 union { 1450 struct in_addr _pfra_ip4addr; 1451 struct in6_addr _pfra_ip6addr; 1452 } pfra_u; 1453 u_int8_t pfra_af; 1454 u_int8_t pfra_net; 1455 u_int8_t pfra_not; 1456 u_int8_t pfra_fback; 1457 }; 1458 #define pfra_ip4addr pfra_u._pfra_ip4addr 1459 #define pfra_ip6addr pfra_u._pfra_ip6addr 1460 1461 enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX }; 1462 enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX }; 1463 enum { PFR_TYPE_PACKETS, PFR_TYPE_BYTES, PFR_TYPE_MAX }; 1464 #define PFR_NUM_COUNTERS (PFR_DIR_MAX * PFR_OP_ADDR_MAX * PFR_TYPE_MAX) 1465 #define PFR_OP_XPASS PFR_OP_ADDR_MAX 1466 1467 struct pfr_astats { 1468 struct pfr_addr pfras_a; 1469 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1470 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1471 time_t pfras_tzero; 1472 }; 1473 1474 enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX }; 1475 1476 struct pfr_tstats { 1477 struct pfr_table pfrts_t; 1478 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1479 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1480 u_int64_t pfrts_match; 1481 u_int64_t pfrts_nomatch; 1482 time_t pfrts_tzero; 1483 int pfrts_cnt; 1484 int pfrts_refcnt[PFR_REFCNT_MAX]; 1485 }; 1486 1487 #ifdef _KERNEL 1488 1489 struct pfr_kstate_counter { 1490 counter_u64_t pkc_pcpu; 1491 u_int64_t pkc_zero; 1492 }; 1493 1494 static inline int 1495 pfr_kstate_counter_init(struct pfr_kstate_counter *pfrc, int flags) 1496 { 1497 1498 pfrc->pkc_zero = 0; 1499 pfrc->pkc_pcpu = counter_u64_alloc(flags); 1500 if (pfrc->pkc_pcpu == NULL) 1501 return (ENOMEM); 1502 return (0); 1503 } 1504 1505 static inline void 1506 pfr_kstate_counter_deinit(struct pfr_kstate_counter *pfrc) 1507 { 1508 1509 counter_u64_free(pfrc->pkc_pcpu); 1510 } 1511 1512 static inline u_int64_t 1513 pfr_kstate_counter_fetch(struct pfr_kstate_counter *pfrc) 1514 { 1515 u_int64_t c; 1516 1517 c = counter_u64_fetch(pfrc->pkc_pcpu); 1518 c -= pfrc->pkc_zero; 1519 return (c); 1520 } 1521 1522 static inline void 1523 pfr_kstate_counter_zero(struct pfr_kstate_counter *pfrc) 1524 { 1525 u_int64_t c; 1526 1527 c = counter_u64_fetch(pfrc->pkc_pcpu); 1528 pfrc->pkc_zero = c; 1529 } 1530 1531 static inline void 1532 pfr_kstate_counter_add(struct pfr_kstate_counter *pfrc, int64_t n) 1533 { 1534 1535 counter_u64_add(pfrc->pkc_pcpu, n); 1536 } 1537 1538 struct pfr_ktstats { 1539 struct pfr_table pfrts_t; 1540 struct pfr_kstate_counter pfrkts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1541 struct pfr_kstate_counter pfrkts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1542 struct pfr_kstate_counter pfrkts_match; 1543 struct pfr_kstate_counter pfrkts_nomatch; 1544 time_t pfrkts_tzero; 1545 int pfrkts_cnt; 1546 int pfrkts_refcnt[PFR_REFCNT_MAX]; 1547 }; 1548 1549 #endif /* _KERNEL */ 1550 1551 #define pfrts_name pfrts_t.pfrt_name 1552 #define pfrts_flags pfrts_t.pfrt_flags 1553 1554 #ifndef _SOCKADDR_UNION_DEFINED 1555 #define _SOCKADDR_UNION_DEFINED 1556 union sockaddr_union { 1557 struct sockaddr sa; 1558 struct sockaddr_in sin; 1559 struct sockaddr_in6 sin6; 1560 }; 1561 #endif /* _SOCKADDR_UNION_DEFINED */ 1562 1563 struct pfr_kcounters { 1564 counter_u64_t pfrkc_counters; 1565 time_t pfrkc_tzero; 1566 }; 1567 #define pfr_kentry_counter(kc, dir, op, t) \ 1568 ((kc)->pfrkc_counters + \ 1569 (dir) * PFR_OP_ADDR_MAX * PFR_TYPE_MAX + (op) * PFR_TYPE_MAX + (t)) 1570 1571 #ifdef _KERNEL 1572 SLIST_HEAD(pfr_kentryworkq, pfr_kentry); 1573 struct pfr_kentry { 1574 struct radix_node pfrke_node[2]; 1575 union sockaddr_union pfrke_sa; 1576 SLIST_ENTRY(pfr_kentry) pfrke_workq; 1577 struct pfr_kcounters pfrke_counters; 1578 u_int8_t pfrke_af; 1579 u_int8_t pfrke_net; 1580 u_int8_t pfrke_not; 1581 u_int8_t pfrke_mark; 1582 }; 1583 1584 SLIST_HEAD(pfr_ktableworkq, pfr_ktable); 1585 RB_HEAD(pfr_ktablehead, pfr_ktable); 1586 struct pfr_ktable { 1587 struct pfr_ktstats pfrkt_kts; 1588 RB_ENTRY(pfr_ktable) pfrkt_tree; 1589 SLIST_ENTRY(pfr_ktable) pfrkt_workq; 1590 struct radix_node_head *pfrkt_ip4; 1591 struct radix_node_head *pfrkt_ip6; 1592 struct pfr_ktable *pfrkt_shadow; 1593 struct pfr_ktable *pfrkt_root; 1594 struct pf_kruleset *pfrkt_rs; 1595 long pfrkt_larg; 1596 int pfrkt_nflags; 1597 }; 1598 #define pfrkt_t pfrkt_kts.pfrts_t 1599 #define pfrkt_name pfrkt_t.pfrt_name 1600 #define pfrkt_anchor pfrkt_t.pfrt_anchor 1601 #define pfrkt_ruleset pfrkt_t.pfrt_ruleset 1602 #define pfrkt_flags pfrkt_t.pfrt_flags 1603 #define pfrkt_cnt pfrkt_kts.pfrkts_cnt 1604 #define pfrkt_refcnt pfrkt_kts.pfrkts_refcnt 1605 #define pfrkt_packets pfrkt_kts.pfrkts_packets 1606 #define pfrkt_bytes pfrkt_kts.pfrkts_bytes 1607 #define pfrkt_match pfrkt_kts.pfrkts_match 1608 #define pfrkt_nomatch pfrkt_kts.pfrkts_nomatch 1609 #define pfrkt_tzero pfrkt_kts.pfrkts_tzero 1610 #endif 1611 1612 #ifdef _KERNEL 1613 struct pfi_kkif { 1614 char pfik_name[IFNAMSIZ]; 1615 union { 1616 RB_ENTRY(pfi_kkif) _pfik_tree; 1617 LIST_ENTRY(pfi_kkif) _pfik_list; 1618 } _pfik_glue; 1619 #define pfik_tree _pfik_glue._pfik_tree 1620 #define pfik_list _pfik_glue._pfik_list 1621 struct pf_counter_u64 pfik_packets[2][2][2]; 1622 struct pf_counter_u64 pfik_bytes[2][2][2]; 1623 time_t pfik_tzero; 1624 u_int pfik_flags; 1625 struct ifnet *pfik_ifp; 1626 struct ifg_group *pfik_group; 1627 u_int pfik_rulerefs; 1628 TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs; 1629 #ifdef PF_WANT_32_TO_64_COUNTER 1630 LIST_ENTRY(pfi_kkif) pfik_allkiflist; 1631 #endif 1632 }; 1633 #endif 1634 1635 #define PFI_IFLAG_REFS 0x0001 /* has state references */ 1636 #define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */ 1637 #define PFI_IFLAG_ANY 0x0200 /* match any non-loopback interface */ 1638 1639 #ifdef _KERNEL 1640 struct pf_sctp_multihome_job; 1641 TAILQ_HEAD(pf_sctp_multihome_jobs, pf_sctp_multihome_job); 1642 1643 struct pf_pdesc { 1644 struct { 1645 int done; 1646 uid_t uid; 1647 gid_t gid; 1648 } lookup; 1649 u_int64_t tot_len; /* Make Mickey money */ 1650 union pf_headers { 1651 struct tcphdr tcp; 1652 struct udphdr udp; 1653 struct sctphdr sctp; 1654 struct icmp icmp; 1655 #ifdef INET6 1656 struct icmp6_hdr icmp6; 1657 #endif /* INET6 */ 1658 char any[0]; 1659 } hdr; 1660 1661 struct pf_addr nsaddr; /* src address after NAT */ 1662 struct pf_addr ndaddr; /* dst address after NAT */ 1663 1664 struct pfi_kkif *kif; /* incomming interface */ 1665 struct mbuf *m; 1666 1667 struct pf_addr *src; /* src address */ 1668 struct pf_addr *dst; /* dst address */ 1669 struct pf_addr osrc; 1670 struct pf_addr odst; 1671 u_int16_t *pcksum; /* proto cksum */ 1672 u_int16_t *sport; 1673 u_int16_t *dport; 1674 u_int16_t osport; 1675 u_int16_t odport; 1676 u_int16_t nsport; /* src port after NAT */ 1677 u_int16_t ndport; /* dst port after NAT */ 1678 struct pf_mtag *pf_mtag; 1679 struct pf_rule_actions act; 1680 1681 u_int32_t off; /* protocol header offset */ 1682 bool df; /* IPv4 Don't fragment flag. */ 1683 u_int32_t hdrlen; /* protocol header length */ 1684 u_int32_t p_len; /* total length of protocol payload */ 1685 u_int32_t extoff; /* extentsion header offset */ 1686 u_int32_t fragoff; /* fragment header offset */ 1687 u_int32_t jumbolen; /* length from v6 jumbo header */ 1688 u_int32_t badopts; /* v4 options or v6 routing headers */ 1689 #define PF_OPT_OTHER 0x0001 1690 #define PF_OPT_JUMBO 0x0002 1691 #define PF_OPT_ROUTER_ALERT 0x0004 1692 1693 u_int16_t *ip_sum; 1694 u_int16_t flags; /* Let SCRUB trigger behavior in 1695 * state code. Easier than tags */ 1696 #define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */ 1697 u_int16_t virtual_proto; 1698 #define PF_VPROTO_FRAGMENT 256 1699 sa_family_t af; 1700 sa_family_t naf; 1701 u_int8_t proto; 1702 u_int8_t tos; 1703 u_int8_t ttl; 1704 u_int8_t dir; /* direction */ 1705 u_int8_t sidx; /* key index for source */ 1706 u_int8_t didx; /* key index for destination */ 1707 #define PFDESC_SCTP_INIT 0x0001 1708 #define PFDESC_SCTP_INIT_ACK 0x0002 1709 #define PFDESC_SCTP_COOKIE 0x0004 1710 #define PFDESC_SCTP_COOKIE_ACK 0x0008 1711 #define PFDESC_SCTP_ABORT 0x0010 1712 #define PFDESC_SCTP_SHUTDOWN 0x0020 1713 #define PFDESC_SCTP_SHUTDOWN_COMPLETE 0x0040 1714 #define PFDESC_SCTP_DATA 0x0080 1715 #define PFDESC_SCTP_ASCONF 0x0100 1716 #define PFDESC_SCTP_HEARTBEAT 0x0200 1717 #define PFDESC_SCTP_HEARTBEAT_ACK 0x0400 1718 #define PFDESC_SCTP_OTHER 0x0800 1719 #define PFDESC_SCTP_ADD_IP 0x1000 1720 u_int16_t sctp_flags; 1721 u_int32_t sctp_initiate_tag; 1722 u_int16_t sctp_dummy_sum; 1723 struct pf_krule *related_rule; 1724 1725 struct pf_sctp_multihome_jobs sctp_multihome_jobs; 1726 }; 1727 1728 struct pf_sctp_multihome_job { 1729 TAILQ_ENTRY(pf_sctp_multihome_job) next; 1730 struct pf_pdesc pd; 1731 struct pf_addr src; 1732 struct pf_addr dst; 1733 int op; 1734 }; 1735 1736 #endif 1737 1738 /* flags for RDR options */ 1739 #define PF_DPORT_RANGE 0x01 /* Dest port uses range */ 1740 #define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */ 1741 1742 /* UDP state enumeration */ 1743 #define PFUDPS_NO_TRAFFIC 0 1744 #define PFUDPS_SINGLE 1 1745 #define PFUDPS_MULTIPLE 2 1746 1747 #define PFUDPS_NSTATES 3 /* number of state levels */ 1748 1749 #define PFUDPS_NAMES { \ 1750 "NO_TRAFFIC", \ 1751 "SINGLE", \ 1752 "MULTIPLE", \ 1753 NULL \ 1754 } 1755 1756 /* Other protocol state enumeration */ 1757 #define PFOTHERS_NO_TRAFFIC 0 1758 #define PFOTHERS_SINGLE 1 1759 #define PFOTHERS_MULTIPLE 2 1760 1761 #define PFOTHERS_NSTATES 3 /* number of state levels */ 1762 1763 #define PFOTHERS_NAMES { \ 1764 "NO_TRAFFIC", \ 1765 "SINGLE", \ 1766 "MULTIPLE", \ 1767 NULL \ 1768 } 1769 1770 #define ACTION_SET(a, x) \ 1771 do { \ 1772 if ((a) != NULL) \ 1773 *(a) = (x); \ 1774 } while (0) 1775 1776 #define REASON_SET(a, x) \ 1777 do { \ 1778 SDT_PROBE2(pf, , test, reason_set, x, __LINE__); \ 1779 if ((a) != NULL) \ 1780 *(a) = (x); \ 1781 if (x < PFRES_MAX) \ 1782 counter_u64_add(V_pf_status.counters[x], 1); \ 1783 } while (0) 1784 1785 enum pf_syncookies_mode { 1786 PF_SYNCOOKIES_NEVER = 0, 1787 PF_SYNCOOKIES_ALWAYS = 1, 1788 PF_SYNCOOKIES_ADAPTIVE = 2, 1789 PF_SYNCOOKIES_MODE_MAX = PF_SYNCOOKIES_ADAPTIVE 1790 }; 1791 1792 #define PF_SYNCOOKIES_HIWATPCT 25 1793 #define PF_SYNCOOKIES_LOWATPCT (PF_SYNCOOKIES_HIWATPCT / 2) 1794 1795 #ifdef _KERNEL 1796 struct pf_kstatus { 1797 counter_u64_t counters[PFRES_MAX]; /* reason for passing/dropping */ 1798 counter_u64_t lcounters[KLCNT_MAX]; /* limit counters */ 1799 struct pf_counter_u64 fcounters[FCNT_MAX]; /* state operation counters */ 1800 counter_u64_t scounters[SCNT_MAX]; /* src_node operation counters */ 1801 uint32_t states; 1802 uint32_t src_nodes; 1803 uint32_t running; 1804 uint32_t since; 1805 uint32_t debug; 1806 uint32_t hostid; 1807 char ifname[IFNAMSIZ]; 1808 uint8_t pf_chksum[PF_MD5_DIGEST_LENGTH]; 1809 bool keep_counters; 1810 enum pf_syncookies_mode syncookies_mode; 1811 bool syncookies_active; 1812 uint64_t syncookies_inflight[2]; 1813 uint32_t states_halfopen; 1814 uint32_t reass; 1815 }; 1816 #endif 1817 1818 struct pf_divert { 1819 union { 1820 struct in_addr ipv4; 1821 struct in6_addr ipv6; 1822 } addr; 1823 u_int16_t port; 1824 }; 1825 1826 #define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */ 1827 #define PFR_KENTRY_HIWAT 200000 /* Number of table entries */ 1828 1829 struct pf_fragment_tag { 1830 uint16_t ft_hdrlen; /* header length of reassembled pkt */ 1831 uint16_t ft_extoff; /* last extension header offset or 0 */ 1832 uint16_t ft_maxlen; /* maximum fragment payload length */ 1833 uint32_t ft_id; /* fragment id */ 1834 }; 1835 1836 /* 1837 * Limit the length of the fragment queue traversal. Remember 1838 * search entry points based on the fragment offset. 1839 */ 1840 #define PF_FRAG_ENTRY_POINTS 16 1841 1842 /* 1843 * The number of entries in the fragment queue must be limited 1844 * to avoid DoS by linear searching. Instead of a global limit, 1845 * use a limit per entry point. For large packets these sum up. 1846 */ 1847 #define PF_FRAG_ENTRY_LIMIT 64 1848 1849 /* 1850 * ioctl parameter structures 1851 */ 1852 1853 struct pfioc_pooladdr { 1854 u_int32_t action; 1855 u_int32_t ticket; 1856 u_int32_t nr; 1857 u_int32_t r_num; 1858 u_int8_t r_action; 1859 u_int8_t r_last; 1860 u_int8_t af; 1861 char anchor[MAXPATHLEN]; 1862 struct pf_pooladdr addr; 1863 }; 1864 1865 struct pfioc_rule { 1866 u_int32_t action; 1867 u_int32_t ticket; 1868 u_int32_t pool_ticket; 1869 u_int32_t nr; 1870 char anchor[MAXPATHLEN]; 1871 char anchor_call[MAXPATHLEN]; 1872 struct pf_rule rule; 1873 }; 1874 1875 struct pfioc_natlook { 1876 struct pf_addr saddr; 1877 struct pf_addr daddr; 1878 struct pf_addr rsaddr; 1879 struct pf_addr rdaddr; 1880 u_int16_t sport; 1881 u_int16_t dport; 1882 u_int16_t rsport; 1883 u_int16_t rdport; 1884 sa_family_t af; 1885 u_int8_t proto; 1886 u_int8_t direction; 1887 }; 1888 1889 struct pfioc_state { 1890 struct pfsync_state_1301 state; 1891 }; 1892 1893 struct pfioc_src_node_kill { 1894 sa_family_t psnk_af; 1895 struct pf_rule_addr psnk_src; 1896 struct pf_rule_addr psnk_dst; 1897 u_int psnk_killed; 1898 }; 1899 1900 #ifdef _KERNEL 1901 struct pf_kstate_kill { 1902 struct pf_state_cmp psk_pfcmp; 1903 sa_family_t psk_af; 1904 int psk_proto; 1905 struct pf_rule_addr psk_src; 1906 struct pf_rule_addr psk_dst; 1907 struct pf_rule_addr psk_rt_addr; 1908 char psk_ifname[IFNAMSIZ]; 1909 char psk_label[PF_RULE_LABEL_SIZE]; 1910 u_int psk_killed; 1911 bool psk_kill_match; 1912 bool psk_nat; 1913 }; 1914 #endif 1915 1916 struct pfioc_state_kill { 1917 struct pf_state_cmp psk_pfcmp; 1918 sa_family_t psk_af; 1919 int psk_proto; 1920 struct pf_rule_addr psk_src; 1921 struct pf_rule_addr psk_dst; 1922 char psk_ifname[IFNAMSIZ]; 1923 char psk_label[PF_RULE_LABEL_SIZE]; 1924 u_int psk_killed; 1925 }; 1926 1927 struct pfioc_states { 1928 int ps_len; 1929 union { 1930 void *ps_buf; 1931 struct pfsync_state_1301 *ps_states; 1932 }; 1933 }; 1934 1935 struct pfioc_states_v2 { 1936 int ps_len; 1937 uint64_t ps_req_version; 1938 union { 1939 void *ps_buf; 1940 struct pf_state_export *ps_states; 1941 }; 1942 }; 1943 1944 struct pfioc_src_nodes { 1945 int psn_len; 1946 union { 1947 void *psn_buf; 1948 struct pf_src_node *psn_src_nodes; 1949 }; 1950 }; 1951 1952 struct pfioc_if { 1953 char ifname[IFNAMSIZ]; 1954 }; 1955 1956 struct pfioc_tm { 1957 int timeout; 1958 int seconds; 1959 }; 1960 1961 struct pfioc_limit { 1962 int index; 1963 unsigned limit; 1964 }; 1965 1966 struct pfioc_altq_v0 { 1967 u_int32_t action; 1968 u_int32_t ticket; 1969 u_int32_t nr; 1970 struct pf_altq_v0 altq; 1971 }; 1972 1973 struct pfioc_altq_v1 { 1974 u_int32_t action; 1975 u_int32_t ticket; 1976 u_int32_t nr; 1977 /* 1978 * Placed here so code that only uses the above parameters can be 1979 * written entirely in terms of the v0 or v1 type. 1980 */ 1981 u_int32_t version; 1982 struct pf_altq_v1 altq; 1983 }; 1984 1985 /* 1986 * Latest version of struct pfioc_altq_vX. This must move in lock-step with 1987 * the latest version of struct pf_altq_vX as it has that struct as a 1988 * member. 1989 */ 1990 #define PFIOC_ALTQ_VERSION PF_ALTQ_VERSION 1991 1992 struct pfioc_qstats_v0 { 1993 u_int32_t ticket; 1994 u_int32_t nr; 1995 void *buf; 1996 int nbytes; 1997 u_int8_t scheduler; 1998 }; 1999 2000 struct pfioc_qstats_v1 { 2001 u_int32_t ticket; 2002 u_int32_t nr; 2003 void *buf; 2004 int nbytes; 2005 u_int8_t scheduler; 2006 /* 2007 * Placed here so code that only uses the above parameters can be 2008 * written entirely in terms of the v0 or v1 type. 2009 */ 2010 u_int32_t version; /* Requested version of stats struct */ 2011 }; 2012 2013 /* Latest version of struct pfioc_qstats_vX */ 2014 #define PFIOC_QSTATS_VERSION 1 2015 2016 struct pfioc_ruleset { 2017 u_int32_t nr; 2018 char path[MAXPATHLEN]; 2019 char name[PF_ANCHOR_NAME_SIZE]; 2020 }; 2021 2022 #define PF_RULESET_ALTQ (PF_RULESET_MAX) 2023 #define PF_RULESET_TABLE (PF_RULESET_MAX+1) 2024 #define PF_RULESET_ETH (PF_RULESET_MAX+2) 2025 struct pfioc_trans { 2026 int size; /* number of elements */ 2027 int esize; /* size of each element in bytes */ 2028 struct pfioc_trans_e { 2029 int rs_num; 2030 char anchor[MAXPATHLEN]; 2031 u_int32_t ticket; 2032 } *array; 2033 }; 2034 2035 #define PFR_FLAG_ATOMIC 0x00000001 /* unused */ 2036 #define PFR_FLAG_DUMMY 0x00000002 2037 #define PFR_FLAG_FEEDBACK 0x00000004 2038 #define PFR_FLAG_CLSTATS 0x00000008 2039 #define PFR_FLAG_ADDRSTOO 0x00000010 2040 #define PFR_FLAG_REPLACE 0x00000020 2041 #define PFR_FLAG_ALLRSETS 0x00000040 2042 #define PFR_FLAG_ALLMASK 0x0000007F 2043 #ifdef _KERNEL 2044 #define PFR_FLAG_USERIOCTL 0x10000000 2045 #endif 2046 2047 struct pfioc_table { 2048 struct pfr_table pfrio_table; 2049 void *pfrio_buffer; 2050 int pfrio_esize; 2051 int pfrio_size; 2052 int pfrio_size2; 2053 int pfrio_nadd; 2054 int pfrio_ndel; 2055 int pfrio_nchange; 2056 int pfrio_flags; 2057 u_int32_t pfrio_ticket; 2058 }; 2059 #define pfrio_exists pfrio_nadd 2060 #define pfrio_nzero pfrio_nadd 2061 #define pfrio_nmatch pfrio_nadd 2062 #define pfrio_naddr pfrio_size2 2063 #define pfrio_setflag pfrio_size2 2064 #define pfrio_clrflag pfrio_nadd 2065 2066 struct pfioc_iface { 2067 char pfiio_name[IFNAMSIZ]; 2068 void *pfiio_buffer; 2069 int pfiio_esize; 2070 int pfiio_size; 2071 int pfiio_nzero; 2072 int pfiio_flags; 2073 }; 2074 2075 /* 2076 * ioctl operations 2077 */ 2078 2079 #define DIOCSTART _IO ('D', 1) 2080 #define DIOCSTOP _IO ('D', 2) 2081 #define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule) 2082 #define DIOCADDRULENV _IOWR('D', 4, struct pfioc_nv) 2083 #define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule) 2084 #define DIOCGETRULENV _IOWR('D', 7, struct pfioc_nv) 2085 #define DIOCCLRSTATESNV _IOWR('D', 18, struct pfioc_nv) 2086 #define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state) 2087 #define DIOCGETSTATENV _IOWR('D', 19, struct pfioc_nv) 2088 #define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if) 2089 #define DIOCGETSTATUSNV _IOWR('D', 21, struct pfioc_nv) 2090 #define DIOCCLRSTATUS _IO ('D', 22) 2091 #define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook) 2092 #define DIOCSETDEBUG _IOWR('D', 24, u_int32_t) 2093 #ifdef COMPAT_FREEBSD14 2094 #define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states) 2095 #endif 2096 #define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule) 2097 #define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm) 2098 #define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm) 2099 #define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state) 2100 #define DIOCCLRRULECTRS _IO ('D', 38) 2101 #define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit) 2102 #define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit) 2103 #define DIOCKILLSTATESNV _IOWR('D', 41, struct pfioc_nv) 2104 #define DIOCSTARTALTQ _IO ('D', 42) 2105 #define DIOCSTOPALTQ _IO ('D', 43) 2106 #define DIOCADDALTQV0 _IOWR('D', 45, struct pfioc_altq_v0) 2107 #define DIOCADDALTQV1 _IOWR('D', 45, struct pfioc_altq_v1) 2108 #define DIOCGETALTQSV0 _IOWR('D', 47, struct pfioc_altq_v0) 2109 #define DIOCGETALTQSV1 _IOWR('D', 47, struct pfioc_altq_v1) 2110 #define DIOCGETALTQV0 _IOWR('D', 48, struct pfioc_altq_v0) 2111 #define DIOCGETALTQV1 _IOWR('D', 48, struct pfioc_altq_v1) 2112 #define DIOCCHANGEALTQV0 _IOWR('D', 49, struct pfioc_altq_v0) 2113 #define DIOCCHANGEALTQV1 _IOWR('D', 49, struct pfioc_altq_v1) 2114 #define DIOCGETQSTATSV0 _IOWR('D', 50, struct pfioc_qstats_v0) 2115 #define DIOCGETQSTATSV1 _IOWR('D', 50, struct pfioc_qstats_v1) 2116 #define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr) 2117 #define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr) 2118 #define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr) 2119 #define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr) 2120 #define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr) 2121 #define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset) 2122 #define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset) 2123 #define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table) 2124 #define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table) 2125 #define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table) 2126 #define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table) 2127 #define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table) 2128 #define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table) 2129 #define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table) 2130 #define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table) 2131 #define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table) 2132 #define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table) 2133 #define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table) 2134 #define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table) 2135 #define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table) 2136 #define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table) 2137 #define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table) 2138 #define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table) 2139 #define DIOCOSFPFLUSH _IO('D', 78) 2140 #define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl) 2141 #define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl) 2142 #define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans) 2143 #define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans) 2144 #define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans) 2145 #define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes) 2146 #define DIOCCLRSRCNODES _IO('D', 85) 2147 #define DIOCSETHOSTID _IOWR('D', 86, u_int32_t) 2148 #define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface) 2149 #define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface) 2150 #define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface) 2151 #define DIOCKILLSRCNODES _IOWR('D', 91, struct pfioc_src_node_kill) 2152 #define DIOCGIFSPEEDV0 _IOWR('D', 92, struct pf_ifspeed_v0) 2153 #define DIOCGIFSPEEDV1 _IOWR('D', 92, struct pf_ifspeed_v1) 2154 #ifdef COMPAT_FREEBSD14 2155 #define DIOCGETSTATESV2 _IOWR('D', 93, struct pfioc_states_v2) 2156 #endif 2157 #define DIOCGETSYNCOOKIES _IOWR('D', 94, struct pfioc_nv) 2158 #define DIOCSETSYNCOOKIES _IOWR('D', 95, struct pfioc_nv) 2159 #define DIOCKEEPCOUNTERS _IOWR('D', 96, struct pfioc_nv) 2160 #define DIOCKEEPCOUNTERS_FREEBSD13 _IOWR('D', 92, struct pfioc_nv) 2161 #define DIOCADDETHRULE _IOWR('D', 97, struct pfioc_nv) 2162 #define DIOCGETETHRULE _IOWR('D', 98, struct pfioc_nv) 2163 #define DIOCGETETHRULES _IOWR('D', 99, struct pfioc_nv) 2164 #define DIOCGETETHRULESETS _IOWR('D', 100, struct pfioc_nv) 2165 #define DIOCGETETHRULESET _IOWR('D', 101, struct pfioc_nv) 2166 #define DIOCSETREASS _IOWR('D', 102, u_int32_t) 2167 2168 struct pf_ifspeed_v0 { 2169 char ifname[IFNAMSIZ]; 2170 u_int32_t baudrate; 2171 }; 2172 2173 struct pf_ifspeed_v1 { 2174 char ifname[IFNAMSIZ]; 2175 u_int32_t baudrate32; 2176 /* layout identical to struct pf_ifspeed_v0 up to this point */ 2177 u_int64_t baudrate; 2178 }; 2179 2180 /* Latest version of struct pf_ifspeed_vX */ 2181 #define PF_IFSPEED_VERSION 1 2182 2183 /* 2184 * Compatibility and convenience macros 2185 */ 2186 #ifndef _KERNEL 2187 #ifdef PFIOC_USE_LATEST 2188 /* 2189 * Maintaining in-tree consumers of the ioctl interface is easier when that 2190 * code can be written in terms old names that refer to the latest interface 2191 * version as that reduces the required changes in the consumers to those 2192 * that are functionally necessary to accommodate a new interface version. 2193 */ 2194 #define pfioc_altq __CONCAT(pfioc_altq_v, PFIOC_ALTQ_VERSION) 2195 #define pfioc_qstats __CONCAT(pfioc_qstats_v, PFIOC_QSTATS_VERSION) 2196 #define pf_ifspeed __CONCAT(pf_ifspeed_v, PF_IFSPEED_VERSION) 2197 2198 #define DIOCADDALTQ __CONCAT(DIOCADDALTQV, PFIOC_ALTQ_VERSION) 2199 #define DIOCGETALTQS __CONCAT(DIOCGETALTQSV, PFIOC_ALTQ_VERSION) 2200 #define DIOCGETALTQ __CONCAT(DIOCGETALTQV, PFIOC_ALTQ_VERSION) 2201 #define DIOCCHANGEALTQ __CONCAT(DIOCCHANGEALTQV, PFIOC_ALTQ_VERSION) 2202 #define DIOCGETQSTATS __CONCAT(DIOCGETQSTATSV, PFIOC_QSTATS_VERSION) 2203 #define DIOCGIFSPEED __CONCAT(DIOCGIFSPEEDV, PF_IFSPEED_VERSION) 2204 #else 2205 /* 2206 * When building out-of-tree code that is written for the old interface, 2207 * such as may exist in ports for example, resolve the old struct tags and 2208 * ioctl command names to the v0 versions. 2209 */ 2210 #define pfioc_altq __CONCAT(pfioc_altq_v, 0) 2211 #define pfioc_qstats __CONCAT(pfioc_qstats_v, 0) 2212 #define pf_ifspeed __CONCAT(pf_ifspeed_v, 0) 2213 2214 #define DIOCADDALTQ __CONCAT(DIOCADDALTQV, 0) 2215 #define DIOCGETALTQS __CONCAT(DIOCGETALTQSV, 0) 2216 #define DIOCGETALTQ __CONCAT(DIOCGETALTQV, 0) 2217 #define DIOCCHANGEALTQ __CONCAT(DIOCCHANGEALTQV, 0) 2218 #define DIOCGETQSTATS __CONCAT(DIOCGETQSTATSV, 0) 2219 #define DIOCGIFSPEED __CONCAT(DIOCGIFSPEEDV, 0) 2220 #endif /* PFIOC_USE_LATEST */ 2221 #endif /* _KERNEL */ 2222 2223 #ifdef _KERNEL 2224 LIST_HEAD(pf_ksrc_node_list, pf_ksrc_node); 2225 struct pf_srchash { 2226 struct pf_ksrc_node_list nodes; 2227 struct mtx lock; 2228 }; 2229 2230 struct pf_keyhash { 2231 LIST_HEAD(, pf_state_key) keys; 2232 struct mtx lock; 2233 }; 2234 2235 struct pf_idhash { 2236 LIST_HEAD(, pf_kstate) states; 2237 struct mtx lock; 2238 }; 2239 2240 struct pf_udpendpointhash { 2241 LIST_HEAD(, pf_udp_endpoint) endpoints; 2242 /* refcont is synchronized on the source endpoint's row lock */ 2243 struct mtx lock; 2244 }; 2245 2246 extern u_long pf_ioctl_maxcount; 2247 VNET_DECLARE(u_long, pf_hashmask); 2248 #define V_pf_hashmask VNET(pf_hashmask) 2249 VNET_DECLARE(u_long, pf_srchashmask); 2250 #define V_pf_srchashmask VNET(pf_srchashmask) 2251 VNET_DECLARE(u_long, pf_udpendpointhashmask); 2252 #define V_pf_udpendpointhashmask VNET(pf_udpendpointhashmask) 2253 #define PF_HASHSIZ (131072) 2254 #define PF_SRCHASHSIZ (PF_HASHSIZ/4) 2255 #define PF_UDPENDHASHSIZ (PF_HASHSIZ/4) 2256 VNET_DECLARE(struct pf_keyhash *, pf_keyhash); 2257 VNET_DECLARE(struct pf_idhash *, pf_idhash); 2258 VNET_DECLARE(struct pf_udpendpointhash *, pf_udpendpointhash); 2259 #define V_pf_keyhash VNET(pf_keyhash) 2260 #define V_pf_idhash VNET(pf_idhash) 2261 #define V_pf_udpendpointhash VNET(pf_udpendpointhash) 2262 VNET_DECLARE(struct pf_srchash *, pf_srchash); 2263 #define V_pf_srchash VNET(pf_srchash) 2264 2265 #define PF_IDHASHID(id) (be64toh(id) % (V_pf_hashmask + 1)) 2266 #define PF_IDHASH(s) PF_IDHASHID((s)->id) 2267 2268 VNET_DECLARE(void *, pf_swi_cookie); 2269 #define V_pf_swi_cookie VNET(pf_swi_cookie) 2270 VNET_DECLARE(struct intr_event *, pf_swi_ie); 2271 #define V_pf_swi_ie VNET(pf_swi_ie) 2272 2273 VNET_DECLARE(struct unrhdr64, pf_stateid); 2274 #define V_pf_stateid VNET(pf_stateid) 2275 2276 TAILQ_HEAD(pf_altqqueue, pf_altq); 2277 VNET_DECLARE(struct pf_altqqueue, pf_altqs[4]); 2278 #define V_pf_altqs VNET(pf_altqs) 2279 VNET_DECLARE(struct pf_kpalist, pf_pabuf[3]); 2280 #define V_pf_pabuf VNET(pf_pabuf) 2281 2282 VNET_DECLARE(u_int32_t, ticket_altqs_active); 2283 #define V_ticket_altqs_active VNET(ticket_altqs_active) 2284 VNET_DECLARE(u_int32_t, ticket_altqs_inactive); 2285 #define V_ticket_altqs_inactive VNET(ticket_altqs_inactive) 2286 VNET_DECLARE(int, altqs_inactive_open); 2287 #define V_altqs_inactive_open VNET(altqs_inactive_open) 2288 VNET_DECLARE(u_int32_t, ticket_pabuf); 2289 #define V_ticket_pabuf VNET(ticket_pabuf) 2290 VNET_DECLARE(struct pf_altqqueue *, pf_altqs_active); 2291 #define V_pf_altqs_active VNET(pf_altqs_active) 2292 VNET_DECLARE(struct pf_altqqueue *, pf_altq_ifs_active); 2293 #define V_pf_altq_ifs_active VNET(pf_altq_ifs_active) 2294 VNET_DECLARE(struct pf_altqqueue *, pf_altqs_inactive); 2295 #define V_pf_altqs_inactive VNET(pf_altqs_inactive) 2296 VNET_DECLARE(struct pf_altqqueue *, pf_altq_ifs_inactive); 2297 #define V_pf_altq_ifs_inactive VNET(pf_altq_ifs_inactive) 2298 2299 VNET_DECLARE(struct pf_krulequeue, pf_unlinked_rules); 2300 #define V_pf_unlinked_rules VNET(pf_unlinked_rules) 2301 2302 #ifdef PF_WANT_32_TO_64_COUNTER 2303 LIST_HEAD(allkiflist_head, pfi_kkif); 2304 VNET_DECLARE(struct allkiflist_head, pf_allkiflist); 2305 #define V_pf_allkiflist VNET(pf_allkiflist) 2306 VNET_DECLARE(size_t, pf_allkifcount); 2307 #define V_pf_allkifcount VNET(pf_allkifcount) 2308 VNET_DECLARE(struct pfi_kkif *, pf_kifmarker); 2309 #define V_pf_kifmarker VNET(pf_kifmarker) 2310 2311 LIST_HEAD(allrulelist_head, pf_krule); 2312 VNET_DECLARE(struct allrulelist_head, pf_allrulelist); 2313 #define V_pf_allrulelist VNET(pf_allrulelist) 2314 VNET_DECLARE(size_t, pf_allrulecount); 2315 #define V_pf_allrulecount VNET(pf_allrulecount) 2316 VNET_DECLARE(struct pf_krule *, pf_rulemarker); 2317 #define V_pf_rulemarker VNET(pf_rulemarker) 2318 #endif 2319 2320 int pf_start(void); 2321 int pf_stop(void); 2322 void pf_initialize(void); 2323 void pf_mtag_initialize(void); 2324 void pf_mtag_cleanup(void); 2325 void pf_cleanup(void); 2326 2327 struct pf_mtag *pf_get_mtag(struct mbuf *); 2328 2329 extern void pf_calc_skip_steps(struct pf_krulequeue *); 2330 #ifdef ALTQ 2331 extern void pf_altq_ifnet_event(struct ifnet *, int); 2332 #endif 2333 VNET_DECLARE(uma_zone_t, pf_state_z); 2334 #define V_pf_state_z VNET(pf_state_z) 2335 VNET_DECLARE(uma_zone_t, pf_state_key_z); 2336 #define V_pf_state_key_z VNET(pf_state_key_z) 2337 VNET_DECLARE(uma_zone_t, pf_udp_mapping_z); 2338 #define V_pf_udp_mapping_z VNET(pf_udp_mapping_z) 2339 VNET_DECLARE(uma_zone_t, pf_state_scrub_z); 2340 #define V_pf_state_scrub_z VNET(pf_state_scrub_z) 2341 VNET_DECLARE(uma_zone_t, pf_anchor_z); 2342 #define V_pf_anchor_z VNET(pf_anchor_z) 2343 VNET_DECLARE(uma_zone_t, pf_eth_anchor_z); 2344 #define V_pf_eth_anchor_z VNET(pf_eth_anchor_z) 2345 2346 extern void pf_purge_thread(void *); 2347 extern void pf_unload_vnet_purge(void); 2348 extern void pf_intr(void *); 2349 extern void pf_purge_expired_src_nodes(void); 2350 2351 extern int pf_remove_state(struct pf_kstate *); 2352 extern int pf_state_insert(struct pfi_kkif *, 2353 struct pfi_kkif *, 2354 struct pf_state_key *, 2355 struct pf_state_key *, 2356 struct pf_kstate *); 2357 extern struct pf_kstate *pf_alloc_state(int); 2358 extern void pf_free_state(struct pf_kstate *); 2359 extern void pf_killstates(struct pf_kstate_kill *, 2360 unsigned int *); 2361 extern unsigned int pf_clear_states(const struct pf_kstate_kill *); 2362 2363 static __inline void 2364 pf_ref_state(struct pf_kstate *s) 2365 { 2366 2367 refcount_acquire(&s->refs); 2368 } 2369 2370 static __inline int 2371 pf_release_state(struct pf_kstate *s) 2372 { 2373 2374 if (refcount_release(&s->refs)) { 2375 pf_free_state(s); 2376 return (1); 2377 } else 2378 return (0); 2379 } 2380 2381 static __inline int 2382 pf_release_staten(struct pf_kstate *s, u_int n) 2383 { 2384 2385 if (refcount_releasen(&s->refs, n)) { 2386 pf_free_state(s); 2387 return (1); 2388 } else 2389 return (0); 2390 } 2391 2392 static __inline uint64_t 2393 pf_get_uptime(void) 2394 { 2395 struct timeval t; 2396 microuptime(&t); 2397 return ((t.tv_sec * 1000) + (t.tv_usec / 1000)); 2398 } 2399 2400 static __inline uint64_t 2401 pf_get_time(void) 2402 { 2403 struct timeval t; 2404 microtime(&t); 2405 return ((t.tv_sec * 1000) + (t.tv_usec / 1000)); 2406 } 2407 2408 extern struct pf_kstate *pf_find_state_byid(uint64_t, uint32_t); 2409 extern struct pf_kstate *pf_find_state_all( 2410 const struct pf_state_key_cmp *, 2411 u_int, int *); 2412 extern bool pf_find_state_all_exists( 2413 const struct pf_state_key_cmp *, 2414 u_int); 2415 extern struct pf_udp_mapping *pf_udp_mapping_find(struct pf_udp_endpoint_cmp 2416 *endpoint); 2417 extern struct pf_udp_mapping *pf_udp_mapping_create(sa_family_t af, 2418 struct pf_addr *src_addr, uint16_t src_port, 2419 struct pf_addr *nat_addr, uint16_t nat_port); 2420 extern int pf_udp_mapping_insert(struct pf_udp_mapping 2421 *mapping); 2422 extern void pf_udp_mapping_release(struct pf_udp_mapping 2423 *mapping); 2424 uint32_t pf_hashsrc(struct pf_addr *, sa_family_t); 2425 extern bool pf_src_node_exists(struct pf_ksrc_node **, 2426 struct pf_srchash *); 2427 extern struct pf_ksrc_node *pf_find_src_node(struct pf_addr *, 2428 struct pf_krule *, sa_family_t, 2429 struct pf_srchash **, pf_sn_types_t, bool); 2430 extern void pf_unlink_src_node(struct pf_ksrc_node *); 2431 extern u_int pf_free_src_nodes(struct pf_ksrc_node_list *); 2432 extern void pf_print_state(struct pf_kstate *); 2433 extern void pf_print_flags(uint16_t); 2434 extern int pf_addr_wrap_neq(struct pf_addr_wrap *, 2435 struct pf_addr_wrap *); 2436 extern u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t, 2437 u_int8_t); 2438 extern u_int16_t pf_proto_cksum_fixup(struct mbuf *, u_int16_t, 2439 u_int16_t, u_int16_t, u_int8_t); 2440 2441 VNET_DECLARE(struct ifnet *, sync_ifp); 2442 #define V_sync_ifp VNET(sync_ifp); 2443 VNET_DECLARE(struct pf_krule, pf_default_rule); 2444 #define V_pf_default_rule VNET(pf_default_rule) 2445 extern void pf_addrcpy(struct pf_addr *, const struct pf_addr *, 2446 sa_family_t); 2447 void pf_free_rule(struct pf_krule *); 2448 2449 int pf_test_eth(int, int, struct ifnet *, struct mbuf **, struct inpcb *); 2450 int pf_scan_sctp(struct pf_pdesc *); 2451 #if defined(INET) || defined(INET6) 2452 int pf_test(sa_family_t, int, int, struct ifnet *, struct mbuf **, struct inpcb *, 2453 struct pf_rule_actions *); 2454 #endif 2455 #ifdef INET 2456 int pf_normalize_ip(u_short *, struct pf_pdesc *); 2457 #endif /* INET */ 2458 2459 void pf_poolmask(struct pf_addr *, struct pf_addr*, 2460 struct pf_addr *, struct pf_addr *, sa_family_t); 2461 void pf_addr_inc(struct pf_addr *, sa_family_t); 2462 #ifdef INET6 2463 int pf_normalize_ip6(int, u_short *, struct pf_pdesc *); 2464 int pf_max_frag_size(struct mbuf *); 2465 int pf_refragment6(struct ifnet *, struct mbuf **, struct m_tag *, 2466 struct ifnet *, bool); 2467 #endif /* INET6 */ 2468 2469 int pf_multihome_scan_init(int, int, struct pf_pdesc *); 2470 int pf_multihome_scan_asconf(int, int, struct pf_pdesc *); 2471 2472 u_int32_t pf_new_isn(struct pf_kstate *); 2473 void *pf_pull_hdr(const struct mbuf *, int, void *, int, u_short *, u_short *, 2474 sa_family_t); 2475 void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t); 2476 void pf_change_proto_a(struct mbuf *, void *, u_int16_t *, u_int32_t, 2477 u_int8_t); 2478 void pf_change_tcp_a(struct mbuf *, void *, u_int16_t *, u_int32_t); 2479 int pf_patch_16(struct pf_pdesc *, void *, u_int16_t, bool); 2480 int pf_patch_32(struct pf_pdesc *, void *, u_int32_t, bool); 2481 void pf_send_deferred_syn(struct pf_kstate *); 2482 int pf_match_addr(u_int8_t, const struct pf_addr *, 2483 const struct pf_addr *, const struct pf_addr *, sa_family_t); 2484 int pf_match_addr_range(const struct pf_addr *, const struct pf_addr *, 2485 const struct pf_addr *, sa_family_t); 2486 int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t); 2487 2488 void pf_normalize_init(void); 2489 void pf_normalize_cleanup(void); 2490 int pf_normalize_tcp(struct pf_pdesc *); 2491 void pf_normalize_tcp_cleanup(struct pf_kstate *); 2492 int pf_normalize_tcp_init(struct pf_pdesc *, 2493 struct tcphdr *, struct pf_state_peer *); 2494 int pf_normalize_tcp_stateful(struct pf_pdesc *, 2495 u_short *, struct tcphdr *, struct pf_kstate *, 2496 struct pf_state_peer *, struct pf_state_peer *, int *); 2497 int pf_normalize_sctp_init(struct pf_pdesc *, 2498 struct pf_state_peer *, struct pf_state_peer *); 2499 int pf_normalize_sctp(struct pf_pdesc *); 2500 u_int32_t 2501 pf_state_expires(const struct pf_kstate *); 2502 void pf_purge_expired_fragments(void); 2503 void pf_purge_fragments(uint32_t); 2504 int pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kkif *, 2505 int); 2506 int pf_socket_lookup(struct pf_pdesc *); 2507 struct pf_state_key *pf_alloc_state_key(int); 2508 int pf_translate(struct pf_pdesc *, struct pf_addr *, u_int16_t, 2509 struct pf_addr *, u_int16_t, u_int16_t, int); 2510 int pf_translate_af(struct pf_pdesc *); 2511 bool pf_init_threshold(struct pf_kthreshold *, uint32_t, uint32_t); 2512 2513 void pfr_initialize(void); 2514 void pfr_cleanup(void); 2515 int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t); 2516 void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t, 2517 u_int64_t, int, int, int); 2518 int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, sa_family_t, 2519 pf_addr_filter_func_t, bool); 2520 void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *); 2521 struct pfr_ktable * 2522 pfr_attach_table(struct pf_kruleset *, char *); 2523 struct pfr_ktable * 2524 pfr_eth_attach_table(struct pf_keth_ruleset *, char *); 2525 void pfr_detach_table(struct pfr_ktable *); 2526 int pfr_clr_tables(struct pfr_table *, int *, int); 2527 int pfr_add_tables(struct pfr_table *, int, int *, int); 2528 int pfr_del_tables(struct pfr_table *, int, int *, int); 2529 int pfr_table_count(struct pfr_table *, int); 2530 int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int); 2531 int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int); 2532 int pfr_clr_tstats(struct pfr_table *, int, int *, int); 2533 int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int); 2534 int pfr_clr_addrs(struct pfr_table *, int *, int); 2535 int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *, time_t); 2536 int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 2537 int); 2538 int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 2539 int); 2540 int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 2541 int *, int *, int *, int, u_int32_t); 2542 int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int); 2543 int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int); 2544 int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *, 2545 int); 2546 int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 2547 int); 2548 int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int); 2549 int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int); 2550 int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int); 2551 int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *, 2552 int *, u_int32_t, int); 2553 struct pfr_ktable 2554 *pfr_ktable_select_active(struct pfr_ktable *); 2555 2556 MALLOC_DECLARE(PFI_MTYPE); 2557 VNET_DECLARE(struct pfi_kkif *, pfi_all); 2558 #define V_pfi_all VNET(pfi_all) 2559 2560 void pfi_initialize(void); 2561 void pfi_initialize_vnet(void); 2562 void pfi_cleanup(void); 2563 void pfi_cleanup_vnet(void); 2564 void pfi_kkif_ref(struct pfi_kkif *); 2565 void pfi_kkif_unref(struct pfi_kkif *); 2566 struct pfi_kkif *pfi_kkif_find(const char *); 2567 struct pfi_kkif *pfi_kkif_attach(struct pfi_kkif *, const char *); 2568 int pfi_kkif_match(struct pfi_kkif *, struct pfi_kkif *); 2569 void pfi_kkif_purge(void); 2570 int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *, 2571 sa_family_t); 2572 int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t); 2573 void pfi_dynaddr_remove(struct pfi_dynaddr *); 2574 void pfi_dynaddr_copyout(struct pf_addr_wrap *); 2575 void pfi_update_status(const char *, struct pf_status *); 2576 void pfi_get_ifaces(const char *, struct pfi_kif *, int *); 2577 int pfi_set_flags(const char *, int); 2578 int pfi_clear_flags(const char *, int); 2579 2580 int pf_match_tag(struct mbuf *, struct pf_krule *, int *, int); 2581 int pf_tag_packet(struct pf_pdesc *, int); 2582 int pf_addr_cmp(struct pf_addr *, struct pf_addr *, 2583 sa_family_t); 2584 2585 uint8_t* pf_find_tcpopt(u_int8_t *, u_int8_t *, size_t, 2586 u_int8_t, u_int8_t); 2587 u_int16_t pf_get_mss(struct pf_pdesc *); 2588 u_int8_t pf_get_wscale(struct pf_pdesc *); 2589 struct mbuf *pf_build_tcp(const struct pf_krule *, sa_family_t, 2590 const struct pf_addr *, const struct pf_addr *, 2591 u_int16_t, u_int16_t, u_int32_t, u_int32_t, 2592 u_int8_t, u_int16_t, u_int16_t, u_int8_t, int, 2593 u_int16_t, u_int16_t, u_int, int); 2594 void pf_send_tcp(const struct pf_krule *, sa_family_t, 2595 const struct pf_addr *, const struct pf_addr *, 2596 u_int16_t, u_int16_t, u_int32_t, u_int32_t, 2597 u_int8_t, u_int16_t, u_int16_t, u_int8_t, int, 2598 u_int16_t, u_int16_t, int); 2599 2600 void pf_syncookies_init(void); 2601 void pf_syncookies_cleanup(void); 2602 int pf_get_syncookies(struct pfioc_nv *); 2603 int pf_set_syncookies(struct pfioc_nv *); 2604 int pf_synflood_check(struct pf_pdesc *); 2605 void pf_syncookie_send(struct pf_pdesc *); 2606 bool pf_syncookie_check(struct pf_pdesc *); 2607 u_int8_t pf_syncookie_validate(struct pf_pdesc *); 2608 struct mbuf * pf_syncookie_recreate_syn(struct pf_pdesc *); 2609 2610 VNET_DECLARE(struct pf_kstatus, pf_status); 2611 #define V_pf_status VNET(pf_status) 2612 2613 struct pf_limit { 2614 uma_zone_t zone; 2615 u_int limit; 2616 }; 2617 VNET_DECLARE(struct pf_limit, pf_limits[PF_LIMIT_MAX]); 2618 #define V_pf_limits VNET(pf_limits) 2619 2620 #endif /* _KERNEL */ 2621 2622 #ifdef _KERNEL 2623 struct pf_nl_pooladdr { 2624 u_int32_t action; 2625 u_int32_t ticket; 2626 u_int32_t nr; 2627 u_int32_t r_num; 2628 u_int8_t r_action; 2629 u_int8_t r_last; 2630 u_int8_t af; 2631 char anchor[MAXPATHLEN]; 2632 struct pf_pooladdr addr; 2633 /* Above this is identical to pfioc_pooladdr */ 2634 int which; 2635 }; 2636 2637 VNET_DECLARE(struct pf_kanchor_global, pf_anchors); 2638 #define V_pf_anchors VNET(pf_anchors) 2639 VNET_DECLARE(struct pf_kanchor, pf_main_anchor); 2640 #define V_pf_main_anchor VNET(pf_main_anchor) 2641 VNET_DECLARE(struct pf_keth_anchor_global, pf_keth_anchors); 2642 #define V_pf_keth_anchors VNET(pf_keth_anchors) 2643 #define pf_main_ruleset V_pf_main_anchor.ruleset 2644 2645 VNET_DECLARE(struct pf_keth_anchor, pf_main_keth_anchor); 2646 #define V_pf_main_keth_anchor VNET(pf_main_keth_anchor) 2647 VNET_DECLARE(struct pf_keth_ruleset*, pf_keth); 2648 #define V_pf_keth VNET(pf_keth) 2649 2650 void pf_init_kruleset(struct pf_kruleset *); 2651 void pf_init_keth(struct pf_keth_ruleset *); 2652 int pf_kanchor_setup(struct pf_krule *, 2653 const struct pf_kruleset *, const char *); 2654 int pf_kanchor_copyout(const struct pf_kruleset *, 2655 const struct pf_krule *, char *, size_t); 2656 int pf_kanchor_nvcopyout(const struct pf_kruleset *, 2657 const struct pf_krule *, nvlist_t *); 2658 void pf_remove_kanchor(struct pf_krule *); 2659 void pf_remove_if_empty_kruleset(struct pf_kruleset *); 2660 struct pf_kruleset *pf_find_kruleset(const char *); 2661 struct pf_kruleset *pf_get_leaf_kruleset(char *, char **); 2662 struct pf_kruleset *pf_find_or_create_kruleset(const char *); 2663 void pf_rs_initialize(void); 2664 2665 2666 struct pf_krule *pf_krule_alloc(void); 2667 2668 void pf_remove_if_empty_keth_ruleset( 2669 struct pf_keth_ruleset *); 2670 struct pf_keth_ruleset *pf_find_keth_ruleset(const char *); 2671 struct pf_keth_anchor *pf_find_keth_anchor(const char *); 2672 int pf_keth_anchor_setup(struct pf_keth_rule *, 2673 const struct pf_keth_ruleset *, const char *); 2674 int pf_keth_anchor_nvcopyout( 2675 const struct pf_keth_ruleset *, 2676 const struct pf_keth_rule *, nvlist_t *); 2677 struct pf_keth_ruleset *pf_find_or_create_keth_ruleset(const char *); 2678 void pf_keth_anchor_remove(struct pf_keth_rule *); 2679 2680 int pf_ioctl_getrules(struct pfioc_rule *); 2681 int pf_ioctl_addrule(struct pf_krule *, uint32_t, 2682 uint32_t, const char *, const char *, uid_t uid, 2683 pid_t); 2684 void pf_ioctl_clear_status(void); 2685 int pf_ioctl_get_timeout(int, int *); 2686 int pf_ioctl_set_timeout(int, int, int *); 2687 int pf_ioctl_get_limit(int, unsigned int *); 2688 int pf_ioctl_set_limit(int, unsigned int, unsigned int *); 2689 int pf_ioctl_begin_addrs(uint32_t *); 2690 int pf_ioctl_add_addr(struct pf_nl_pooladdr *); 2691 int pf_ioctl_get_addrs(struct pf_nl_pooladdr *); 2692 int pf_ioctl_get_addr(struct pf_nl_pooladdr *); 2693 int pf_ioctl_get_rulesets(struct pfioc_ruleset *); 2694 int pf_ioctl_get_ruleset(struct pfioc_ruleset *); 2695 int pf_ioctl_natlook(struct pfioc_natlook *); 2696 2697 void pf_krule_free(struct pf_krule *); 2698 void pf_krule_clear_counters(struct pf_krule *); 2699 void pf_addr_copyout(struct pf_addr_wrap *); 2700 #endif 2701 2702 /* The fingerprint functions can be linked into userland programs (tcpdump) */ 2703 int pf_osfp_add(struct pf_osfp_ioctl *); 2704 #ifdef _KERNEL 2705 struct pf_osfp_enlist * 2706 pf_osfp_fingerprint(struct pf_pdesc *, const struct tcphdr *); 2707 #endif /* _KERNEL */ 2708 void pf_osfp_flush(void); 2709 int pf_osfp_get(struct pf_osfp_ioctl *); 2710 int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t); 2711 2712 #ifdef _KERNEL 2713 void pf_print_host(struct pf_addr *, u_int16_t, sa_family_t); 2714 2715 enum pf_test_status pf_step_into_anchor(struct pf_test_ctx *, struct pf_krule *); 2716 enum pf_test_status pf_match_rule(struct pf_test_ctx *, struct pf_kruleset *); 2717 void pf_step_into_keth_anchor(struct pf_keth_anchor_stackframe *, 2718 int *, struct pf_keth_ruleset **, 2719 struct pf_keth_rule **, struct pf_keth_rule **, 2720 int *); 2721 int pf_step_out_of_keth_anchor(struct pf_keth_anchor_stackframe *, 2722 int *, struct pf_keth_ruleset **, 2723 struct pf_keth_rule **, struct pf_keth_rule **, 2724 int *); 2725 2726 u_short pf_map_addr(sa_family_t, struct pf_krule *, 2727 struct pf_addr *, struct pf_addr *, 2728 struct pfi_kkif **nkif, sa_family_t *, 2729 struct pf_addr *, struct pf_kpool *); 2730 u_short pf_map_addr_sn(u_int8_t, struct pf_krule *, 2731 struct pf_addr *, struct pf_addr *, 2732 sa_family_t *, struct pfi_kkif **nkif, 2733 struct pf_addr *, struct pf_kpool *, 2734 pf_sn_types_t); 2735 int pf_get_transaddr_af(struct pf_krule *, 2736 struct pf_pdesc *); 2737 u_short pf_get_translation(struct pf_test_ctx *); 2738 u_short pf_get_transaddr(struct pf_test_ctx *, 2739 struct pf_krule *, 2740 u_int8_t, struct pf_kpool *); 2741 int pf_translate_compat(struct pf_test_ctx *); 2742 2743 int pf_state_key_setup(struct pf_pdesc *, 2744 u_int16_t, u_int16_t, 2745 struct pf_state_key **sk, struct pf_state_key **nk); 2746 struct pf_state_key *pf_state_key_clone(const struct pf_state_key *); 2747 void pf_rule_to_actions(struct pf_krule *, 2748 struct pf_rule_actions *); 2749 int pf_normalize_mss(struct pf_pdesc *pd); 2750 #if defined(INET) || defined(INET6) 2751 void pf_scrub(struct pf_pdesc *); 2752 #endif 2753 2754 struct pfi_kkif *pf_kkif_create(int); 2755 void pf_kkif_free(struct pfi_kkif *); 2756 void pf_kkif_zero(struct pfi_kkif *); 2757 2758 2759 /* NAT64 functions. */ 2760 int inet_nat64(int, const void *, void *, const void *, u_int8_t); 2761 int inet_nat64_inet(const void *, void *, const void *, u_int8_t); 2762 int inet_nat64_inet6(const void *, void *, const void *, u_int8_t); 2763 2764 int inet_nat46(int, const void *, void *, const void *, u_int8_t); 2765 int inet_nat46_inet(const void *, void *, const void *, u_int8_t); 2766 int inet_nat46_inet6(const void *, void *, const void *, u_int8_t); 2767 2768 #endif /* _KERNEL */ 2769 2770 #endif /* _NET_PFVAR_H_ */ 2771