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