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