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