1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2001 Daniel Hartmeier 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * - Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * - Redistributions in binary form must reproduce the above 14 * copyright notice, this list of conditions and the following 15 * disclaimer in the documentation and/or other materials provided 16 * with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 21 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 22 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 24 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 25 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 26 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 28 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 * 31 * $OpenBSD: pfvar.h,v 1.282 2009/01/29 15:12:28 pyr Exp $ 32 */ 33 34 #ifndef _NET_PFVAR_H_ 35 #define _NET_PFVAR_H_ 36 37 #include <sys/param.h> 38 #include <sys/queue.h> 39 #include <sys/counter.h> 40 #include <sys/cpuset.h> 41 #include <sys/epoch.h> 42 #include <sys/malloc.h> 43 #include <sys/nv.h> 44 #include <sys/refcount.h> 45 #include <sys/sdt.h> 46 #include <sys/sysctl.h> 47 #include <sys/smp.h> 48 #include <sys/lock.h> 49 #include <sys/rmlock.h> 50 #include <sys/tree.h> 51 #include <sys/seqc.h> 52 #include <vm/uma.h> 53 54 #include <net/if.h> 55 #include <net/ethernet.h> 56 #include <net/radix.h> 57 #include <netinet/in.h> 58 #ifdef _KERNEL 59 #include <netinet/ip.h> 60 #include <netinet/tcp.h> 61 #include <netinet/udp.h> 62 #include <netinet/sctp.h> 63 #include <netinet/ip_icmp.h> 64 #include <netinet/icmp6.h> 65 #endif 66 67 #include <netpfil/pf/pf.h> 68 #include <netpfil/pf/pf_altq.h> 69 #include <netpfil/pf/pf_mtag.h> 70 71 #ifdef _KERNEL 72 73 #define PF_PFIL_NOREFRAGMENT 0x80000000 74 75 #if defined(__arm__) 76 #define PF_WANT_32_TO_64_COUNTER 77 #endif 78 79 /* 80 * A hybrid of 32-bit and 64-bit counters which can be used on platforms where 81 * counter(9) is very expensive. 82 * 83 * As 32-bit counters are expected to overflow, a periodic job sums them up to 84 * a saved 64-bit state. Fetching the value still walks all CPUs to get the most 85 * current snapshot. 86 */ 87 #ifdef PF_WANT_32_TO_64_COUNTER 88 struct pf_counter_u64_pcpu { 89 u_int32_t current; 90 u_int32_t snapshot; 91 }; 92 93 struct pf_counter_u64 { 94 struct pf_counter_u64_pcpu *pfcu64_pcpu; 95 u_int64_t pfcu64_value; 96 seqc_t pfcu64_seqc; 97 }; 98 99 static inline int 100 pf_counter_u64_init(struct pf_counter_u64 *pfcu64, int flags) 101 { 102 103 pfcu64->pfcu64_value = 0; 104 pfcu64->pfcu64_seqc = 0; 105 pfcu64->pfcu64_pcpu = uma_zalloc_pcpu(pcpu_zone_8, flags | M_ZERO); 106 if (__predict_false(pfcu64->pfcu64_pcpu == NULL)) 107 return (ENOMEM); 108 return (0); 109 } 110 111 static inline void 112 pf_counter_u64_deinit(struct pf_counter_u64 *pfcu64) 113 { 114 115 uma_zfree_pcpu(pcpu_zone_8, pfcu64->pfcu64_pcpu); 116 } 117 118 static inline void 119 pf_counter_u64_critical_enter(void) 120 { 121 122 critical_enter(); 123 } 124 125 static inline void 126 pf_counter_u64_critical_exit(void) 127 { 128 129 critical_exit(); 130 } 131 132 static inline void 133 pf_counter_u64_rollup_protected(struct pf_counter_u64 *pfcu64, uint64_t n) 134 { 135 136 MPASS(curthread->td_critnest > 0); 137 pfcu64->pfcu64_value += n; 138 } 139 140 static inline void 141 pf_counter_u64_add_protected(struct pf_counter_u64 *pfcu64, uint32_t n) 142 { 143 struct pf_counter_u64_pcpu *pcpu; 144 u_int32_t val; 145 146 MPASS(curthread->td_critnest > 0); 147 pcpu = zpcpu_get(pfcu64->pfcu64_pcpu); 148 val = atomic_load_int(&pcpu->current); 149 atomic_store_int(&pcpu->current, val + n); 150 } 151 152 static inline void 153 pf_counter_u64_add(struct pf_counter_u64 *pfcu64, uint32_t n) 154 { 155 156 critical_enter(); 157 pf_counter_u64_add_protected(pfcu64, n); 158 critical_exit(); 159 } 160 161 static inline u_int64_t 162 pf_counter_u64_periodic(struct pf_counter_u64 *pfcu64) 163 { 164 struct pf_counter_u64_pcpu *pcpu; 165 u_int64_t sum; 166 u_int32_t val; 167 int cpu; 168 169 MPASS(curthread->td_critnest > 0); 170 seqc_write_begin(&pfcu64->pfcu64_seqc); 171 sum = pfcu64->pfcu64_value; 172 CPU_FOREACH(cpu) { 173 pcpu = zpcpu_get_cpu(pfcu64->pfcu64_pcpu, cpu); 174 val = atomic_load_int(&pcpu->current); 175 sum += (uint32_t)(val - pcpu->snapshot); 176 pcpu->snapshot = val; 177 } 178 pfcu64->pfcu64_value = sum; 179 seqc_write_end(&pfcu64->pfcu64_seqc); 180 return (sum); 181 } 182 183 static inline u_int64_t 184 pf_counter_u64_fetch(const struct pf_counter_u64 *pfcu64) 185 { 186 struct pf_counter_u64_pcpu *pcpu; 187 u_int64_t sum; 188 seqc_t seqc; 189 int cpu; 190 191 for (;;) { 192 seqc = seqc_read(&pfcu64->pfcu64_seqc); 193 sum = 0; 194 CPU_FOREACH(cpu) { 195 pcpu = zpcpu_get_cpu(pfcu64->pfcu64_pcpu, cpu); 196 sum += (uint32_t)(atomic_load_int(&pcpu->current) -pcpu->snapshot); 197 } 198 sum += pfcu64->pfcu64_value; 199 if (seqc_consistent(&pfcu64->pfcu64_seqc, seqc)) 200 break; 201 } 202 return (sum); 203 } 204 205 static inline void 206 pf_counter_u64_zero_protected(struct pf_counter_u64 *pfcu64) 207 { 208 struct pf_counter_u64_pcpu *pcpu; 209 int cpu; 210 211 MPASS(curthread->td_critnest > 0); 212 seqc_write_begin(&pfcu64->pfcu64_seqc); 213 CPU_FOREACH(cpu) { 214 pcpu = zpcpu_get_cpu(pfcu64->pfcu64_pcpu, cpu); 215 pcpu->snapshot = atomic_load_int(&pcpu->current); 216 } 217 pfcu64->pfcu64_value = 0; 218 seqc_write_end(&pfcu64->pfcu64_seqc); 219 } 220 221 static inline void 222 pf_counter_u64_zero(struct pf_counter_u64 *pfcu64) 223 { 224 225 critical_enter(); 226 pf_counter_u64_zero_protected(pfcu64); 227 critical_exit(); 228 } 229 #else 230 struct pf_counter_u64 { 231 counter_u64_t counter; 232 }; 233 234 static inline int 235 pf_counter_u64_init(struct pf_counter_u64 *pfcu64, int flags) 236 { 237 238 pfcu64->counter = counter_u64_alloc(flags); 239 if (__predict_false(pfcu64->counter == NULL)) 240 return (ENOMEM); 241 return (0); 242 } 243 244 static inline void 245 pf_counter_u64_deinit(struct pf_counter_u64 *pfcu64) 246 { 247 248 counter_u64_free(pfcu64->counter); 249 } 250 251 static inline void 252 pf_counter_u64_critical_enter(void) 253 { 254 255 } 256 257 static inline void 258 pf_counter_u64_critical_exit(void) 259 { 260 261 } 262 263 static inline void 264 pf_counter_u64_rollup_protected(struct pf_counter_u64 *pfcu64, uint64_t n) 265 { 266 267 counter_u64_add(pfcu64->counter, n); 268 } 269 270 static inline void 271 pf_counter_u64_add_protected(struct pf_counter_u64 *pfcu64, uint32_t n) 272 { 273 274 counter_u64_add(pfcu64->counter, n); 275 } 276 277 static inline void 278 pf_counter_u64_add(struct pf_counter_u64 *pfcu64, uint32_t n) 279 { 280 281 pf_counter_u64_add_protected(pfcu64, n); 282 } 283 284 static inline u_int64_t 285 pf_counter_u64_fetch(const struct pf_counter_u64 *pfcu64) 286 { 287 288 return (counter_u64_fetch(pfcu64->counter)); 289 } 290 291 static inline void 292 pf_counter_u64_zero_protected(struct pf_counter_u64 *pfcu64) 293 { 294 295 counter_u64_zero(pfcu64->counter); 296 } 297 298 static inline void 299 pf_counter_u64_zero(struct pf_counter_u64 *pfcu64) 300 { 301 302 pf_counter_u64_zero_protected(pfcu64); 303 } 304 #endif 305 306 #define pf_get_timestamp(prule)({ \ 307 uint32_t _ts = 0; \ 308 uint32_t __ts; \ 309 int cpu; \ 310 CPU_FOREACH(cpu) { \ 311 __ts = *zpcpu_get_cpu(prule->timestamp, cpu); \ 312 if (__ts > _ts) \ 313 _ts = __ts; \ 314 } \ 315 _ts; \ 316 }) 317 318 #define pf_update_timestamp(prule) \ 319 do { \ 320 critical_enter(); \ 321 *zpcpu_get((prule)->timestamp) = time_second; \ 322 critical_exit(); \ 323 } while (0) 324 325 #define pf_timestamp_pcpu_zone (sizeof(time_t) == 4 ? pcpu_zone_4 : pcpu_zone_8) 326 _Static_assert(sizeof(time_t) == 4 || sizeof(time_t) == 8, "unexpected time_t size"); 327 328 SYSCTL_DECL(_net_pf); 329 MALLOC_DECLARE(M_PFHASH); 330 MALLOC_DECLARE(M_PF_RULE_ITEM); 331 332 SDT_PROVIDER_DECLARE(pf); 333 SDT_PROBE_DECLARE(pf, , test, reason_set); 334 SDT_PROBE_DECLARE(pf, , log, log); 335 336 #define DPFPRINTF(n, fmt, x...) \ 337 do { \ 338 SDT_PROBE2(pf, , log, log, (n), fmt); \ 339 if (V_pf_status.debug >= (n)) \ 340 printf(fmt "\n", ##x); \ 341 } while (0) 342 343 struct pfi_dynaddr { 344 TAILQ_ENTRY(pfi_dynaddr) entry; 345 struct pf_addr pfid_addr4; 346 struct pf_addr pfid_mask4; 347 struct pf_addr pfid_addr6; 348 struct pf_addr pfid_mask6; 349 struct pfr_ktable *pfid_kt; 350 struct pfi_kkif *pfid_kif; 351 int pfid_net; /* mask or 128 */ 352 int pfid_acnt4; /* address count IPv4 */ 353 int pfid_acnt6; /* address count IPv6 */ 354 sa_family_t pfid_af; /* rule af */ 355 u_int8_t pfid_iflags; /* PFI_AFLAG_* */ 356 }; 357 358 #define PF_NAME "pf" 359 360 #define PF_HASHROW_ASSERT(h) mtx_assert(&(h)->lock, MA_OWNED) 361 #define PF_HASHROW_LOCK(h) mtx_lock(&(h)->lock) 362 #define PF_HASHROW_UNLOCK(h) mtx_unlock(&(h)->lock) 363 364 #ifdef INVARIANTS 365 #define PF_STATE_LOCK(s) \ 366 do { \ 367 struct pf_kstate *_s = (s); \ 368 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(_s)]; \ 369 MPASS(_s->lock == &_ih->lock); \ 370 mtx_lock(_s->lock); \ 371 } while (0) 372 #define PF_STATE_UNLOCK(s) \ 373 do { \ 374 struct pf_kstate *_s = (s); \ 375 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(_s)]; \ 376 MPASS(_s->lock == &_ih->lock); \ 377 mtx_unlock(_s->lock); \ 378 } while (0) 379 #else 380 #define PF_STATE_LOCK(s) mtx_lock((s)->lock) 381 #define PF_STATE_UNLOCK(s) mtx_unlock((s)->lock) 382 #endif 383 384 #ifdef INVARIANTS 385 #define PF_STATE_LOCK_ASSERT(s) \ 386 do { \ 387 struct pf_kstate *_s = (s); \ 388 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(_s)]; \ 389 MPASS(_s->lock == &_ih->lock); \ 390 PF_HASHROW_ASSERT(_ih); \ 391 } while (0) 392 #else /* !INVARIANTS */ 393 #define PF_STATE_LOCK_ASSERT(s) do {} while (0) 394 #endif /* INVARIANTS */ 395 396 #ifdef INVARIANTS 397 #define PF_SRC_NODE_LOCK(sn) \ 398 do { \ 399 struct pf_ksrc_node *_sn = (sn); \ 400 struct pf_srchash *_sh = &V_pf_srchash[ \ 401 pf_hashsrc(&_sn->addr, _sn->af)]; \ 402 MPASS(_sn->lock == &_sh->lock); \ 403 mtx_lock(_sn->lock); \ 404 } while (0) 405 #define PF_SRC_NODE_UNLOCK(sn) \ 406 do { \ 407 struct pf_ksrc_node *_sn = (sn); \ 408 struct pf_srchash *_sh = &V_pf_srchash[ \ 409 pf_hashsrc(&_sn->addr, _sn->af)]; \ 410 MPASS(_sn->lock == &_sh->lock); \ 411 mtx_unlock(_sn->lock); \ 412 } while (0) 413 #else 414 #define PF_SRC_NODE_LOCK(sn) mtx_lock((sn)->lock) 415 #define PF_SRC_NODE_UNLOCK(sn) mtx_unlock((sn)->lock) 416 #endif 417 418 #ifdef INVARIANTS 419 #define PF_SRC_NODE_LOCK_ASSERT(sn) \ 420 do { \ 421 struct pf_ksrc_node *_sn = (sn); \ 422 struct pf_srchash *_sh = &V_pf_srchash[ \ 423 pf_hashsrc(&_sn->addr, _sn->af)]; \ 424 MPASS(_sn->lock == &_sh->lock); \ 425 PF_HASHROW_ASSERT(_sh); \ 426 } while (0) 427 #else /* !INVARIANTS */ 428 #define PF_SRC_NODE_LOCK_ASSERT(sn) do {} while (0) 429 #endif /* INVARIANTS */ 430 431 extern struct mtx_padalign pf_unlnkdrules_mtx; 432 #define PF_UNLNKDRULES_LOCK() mtx_lock(&pf_unlnkdrules_mtx) 433 #define PF_UNLNKDRULES_UNLOCK() mtx_unlock(&pf_unlnkdrules_mtx) 434 #define PF_UNLNKDRULES_ASSERT() mtx_assert(&pf_unlnkdrules_mtx, MA_OWNED) 435 436 extern struct sx pf_config_lock; 437 #define PF_CONFIG_LOCK() sx_xlock(&pf_config_lock) 438 #define PF_CONFIG_UNLOCK() sx_xunlock(&pf_config_lock) 439 #define PF_CONFIG_ASSERT() sx_assert(&pf_config_lock, SA_XLOCKED) 440 441 VNET_DECLARE(struct rmlock, pf_rules_lock); 442 #define V_pf_rules_lock VNET(pf_rules_lock) 443 444 #define PF_RULES_RLOCK_TRACKER struct rm_priotracker _pf_rules_tracker 445 #define PF_RULES_RLOCK() rm_rlock(&V_pf_rules_lock, &_pf_rules_tracker) 446 #define PF_RULES_RUNLOCK() rm_runlock(&V_pf_rules_lock, &_pf_rules_tracker) 447 #define PF_RULES_WLOCK() rm_wlock(&V_pf_rules_lock) 448 #define PF_RULES_WUNLOCK() rm_wunlock(&V_pf_rules_lock) 449 #define PF_RULES_WOWNED() rm_wowned(&V_pf_rules_lock) 450 #define PF_RULES_ASSERT() rm_assert(&V_pf_rules_lock, RA_LOCKED) 451 #define PF_RULES_RASSERT() rm_assert(&V_pf_rules_lock, RA_RLOCKED) 452 #define PF_RULES_WASSERT() rm_assert(&V_pf_rules_lock, RA_WLOCKED) 453 454 extern struct mtx_padalign pf_table_stats_lock; 455 #define PF_TABLE_STATS_LOCK() mtx_lock(&pf_table_stats_lock) 456 #define PF_TABLE_STATS_UNLOCK() mtx_unlock(&pf_table_stats_lock) 457 #define PF_TABLE_STATS_OWNED() mtx_owned(&pf_table_stats_lock) 458 #define PF_TABLE_STATS_ASSERT() mtx_assert(&pf_table_stats_lock, MA_OWNED) 459 460 extern struct sx pf_end_lock; 461 462 #define PF_MODVER 1 463 #define PFLOG_MODVER 1 464 #define PFSYNC_MODVER 1 465 466 #define PFLOG_MINVER 1 467 #define PFLOG_PREFVER PFLOG_MODVER 468 #define PFLOG_MAXVER 1 469 #define PFSYNC_MINVER 1 470 #define PFSYNC_PREFVER PFSYNC_MODVER 471 #define PFSYNC_MAXVER 1 472 473 #ifdef INET 474 #ifndef INET6 475 #define PF_INET_ONLY 476 #endif /* ! INET6 */ 477 #endif /* INET */ 478 479 #ifdef INET6 480 #ifndef INET 481 #define PF_INET6_ONLY 482 #endif /* ! INET */ 483 #endif /* INET6 */ 484 485 #ifdef INET 486 #ifdef INET6 487 #define PF_INET_INET6 488 #endif /* INET6 */ 489 #endif /* INET */ 490 491 #else 492 493 #define PF_INET_INET6 494 495 #endif /* _KERNEL */ 496 497 /* Both IPv4 and IPv6 */ 498 #ifdef PF_INET_INET6 499 500 #define PF_AEQ(a, b, c) \ 501 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \ 502 (c == AF_INET6 && (a)->addr32[3] == (b)->addr32[3] && \ 503 (a)->addr32[2] == (b)->addr32[2] && \ 504 (a)->addr32[1] == (b)->addr32[1] && \ 505 (a)->addr32[0] == (b)->addr32[0])) \ 506 507 #define PF_ANEQ(a, b, c) \ 508 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \ 509 (c == AF_INET6 && ((a)->addr32[0] != (b)->addr32[0] || \ 510 (a)->addr32[1] != (b)->addr32[1] || \ 511 (a)->addr32[2] != (b)->addr32[2] || \ 512 (a)->addr32[3] != (b)->addr32[3]))) \ 513 514 #define PF_AZERO(a, c) \ 515 ((c == AF_INET && !(a)->addr32[0]) || \ 516 (c == AF_INET6 && !(a)->addr32[0] && !(a)->addr32[1] && \ 517 !(a)->addr32[2] && !(a)->addr32[3] )) \ 518 519 #else 520 521 /* Just IPv6 */ 522 523 #ifdef PF_INET6_ONLY 524 525 #define PF_AEQ(a, b, c) \ 526 ((a)->addr32[3] == (b)->addr32[3] && \ 527 (a)->addr32[2] == (b)->addr32[2] && \ 528 (a)->addr32[1] == (b)->addr32[1] && \ 529 (a)->addr32[0] == (b)->addr32[0]) \ 530 531 #define PF_ANEQ(a, b, c) \ 532 ((a)->addr32[3] != (b)->addr32[3] || \ 533 (a)->addr32[2] != (b)->addr32[2] || \ 534 (a)->addr32[1] != (b)->addr32[1] || \ 535 (a)->addr32[0] != (b)->addr32[0]) \ 536 537 #define PF_AZERO(a, c) \ 538 (!(a)->addr32[0] && \ 539 !(a)->addr32[1] && \ 540 !(a)->addr32[2] && \ 541 !(a)->addr32[3] ) \ 542 543 #else 544 545 /* Just IPv4 */ 546 #ifdef PF_INET_ONLY 547 548 #define PF_AEQ(a, b, c) \ 549 ((a)->addr32[0] == (b)->addr32[0]) 550 551 #define PF_ANEQ(a, b, c) \ 552 ((a)->addr32[0] != (b)->addr32[0]) 553 554 #define PF_AZERO(a, c) \ 555 (!(a)->addr32[0]) 556 557 #endif /* PF_INET_ONLY */ 558 #endif /* PF_INET6_ONLY */ 559 #endif /* PF_INET_INET6 */ 560 561 #ifdef _KERNEL 562 563 void unhandled_af(int) __dead2; 564 565 static void inline 566 pf_addrcpy(struct pf_addr *dst, const struct pf_addr *src, sa_family_t af) 567 { 568 switch (af) { 569 #ifdef INET 570 case AF_INET: 571 memcpy(&dst->v4, &src->v4, sizeof(dst->v4)); 572 break; 573 #endif /* INET */ 574 #ifdef INET6 575 case AF_INET6: 576 memcpy(&dst->v6, &src->v6, sizeof(dst->v6)); 577 break; 578 #endif /* INET6 */ 579 default: 580 unhandled_af(af); 581 } 582 } 583 #endif 584 585 /* 586 * XXX callers not FIB-aware in our version of pf yet. 587 * OpenBSD fixed it later it seems, 2010/05/07 13:33:16 claudio. 588 */ 589 #define PF_MISMATCHAW(aw, x, af, neg, ifp, rtid) \ 590 ( \ 591 (((aw)->type == PF_ADDR_NOROUTE && \ 592 pf_routable((x), (af), NULL, (rtid))) || \ 593 (((aw)->type == PF_ADDR_URPFFAILED && (ifp) != NULL && \ 594 pf_routable((x), (af), (ifp), (rtid))) || \ 595 ((aw)->type == PF_ADDR_TABLE && \ 596 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \ 597 ((aw)->type == PF_ADDR_DYNIFTL && \ 598 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \ 599 ((aw)->type == PF_ADDR_RANGE && \ 600 !pf_match_addr_range(&(aw)->v.a.addr, \ 601 &(aw)->v.a.mask, (x), (af))) || \ 602 ((aw)->type == PF_ADDR_ADDRMASK && \ 603 !PF_AZERO(&(aw)->v.a.mask, (af)) && \ 604 !pf_match_addr(0, &(aw)->v.a.addr, \ 605 &(aw)->v.a.mask, (x), (af))))) != \ 606 (neg) \ 607 ) 608 609 #define PF_ALGNMNT(off) (((off) % 2) == 0) 610 611 /* 612 * At the moment there are no rules which have both NAT and RDR actions, 613 * apart from af-to rules, but those don't to source tracking for address 614 * translation. And the r->rdr pool is used for both NAT and RDR. 615 * So there is no PF_SN_RDR. 616 */ 617 enum pf_sn_types { PF_SN_LIMIT, PF_SN_NAT, PF_SN_ROUTE, PF_SN_MAX }; 618 typedef enum pf_sn_types pf_sn_types_t; 619 #define PF_SN_TYPE_NAMES { \ 620 "limit source-track", \ 621 "NAT/RDR sticky-address", \ 622 "route sticky-address", \ 623 NULL \ 624 } 625 626 #ifdef _KERNEL 627 628 struct pf_kpooladdr { 629 struct pf_addr_wrap addr; 630 TAILQ_ENTRY(pf_kpooladdr) entries; 631 char ifname[IFNAMSIZ]; 632 sa_family_t af; 633 struct pfi_kkif *kif; 634 }; 635 636 TAILQ_HEAD(pf_kpalist, pf_kpooladdr); 637 638 struct pf_kpool { 639 struct mtx mtx; 640 struct pf_kpalist list; 641 struct pf_kpooladdr *cur; 642 struct pf_poolhashkey key; 643 struct pf_addr counter; 644 struct pf_mape_portset mape; 645 int tblidx; 646 u_int16_t proxy_port[2]; 647 u_int8_t opts; 648 sa_family_t ipv6_nexthop_af; 649 }; 650 651 struct pf_rule_actions { 652 struct pf_addr rt_addr; 653 struct pfi_kkif *rt_kif; 654 int32_t rtableid; 655 uint32_t flags; 656 uint16_t qid; 657 uint16_t pqid; 658 uint16_t max_mss; 659 uint16_t dnpipe; 660 uint16_t dnrpipe; /* Reverse direction pipe */ 661 sa_family_t rt_af; 662 uint8_t log; 663 uint8_t set_tos; 664 uint8_t min_ttl; 665 uint8_t set_prio[2]; 666 uint8_t rt; 667 uint8_t allow_opts; 668 uint16_t max_pkt_size; 669 }; 670 671 union pf_keth_rule_ptr { 672 struct pf_keth_rule *ptr; 673 uint32_t nr; 674 }; 675 676 struct pf_keth_rule_addr { 677 uint8_t addr[ETHER_ADDR_LEN]; 678 uint8_t mask[ETHER_ADDR_LEN]; 679 bool neg; 680 uint8_t isset; 681 }; 682 683 struct pf_keth_anchor; 684 685 TAILQ_HEAD(pf_keth_ruleq, pf_keth_rule); 686 687 struct pf_keth_ruleset { 688 struct pf_keth_ruleq rules[2]; 689 struct pf_keth_rules { 690 struct pf_keth_ruleq *rules; 691 int open; 692 uint32_t ticket; 693 } active, inactive; 694 struct vnet *vnet; 695 struct pf_keth_anchor *anchor; 696 }; 697 698 RB_HEAD(pf_keth_anchor_global, pf_keth_anchor); 699 RB_HEAD(pf_keth_anchor_node, pf_keth_anchor); 700 struct pf_keth_anchor { 701 RB_ENTRY(pf_keth_anchor) entry_node; 702 RB_ENTRY(pf_keth_anchor) entry_global; 703 struct pf_keth_anchor *parent; 704 struct pf_keth_anchor_node children; 705 char name[PF_ANCHOR_NAME_SIZE]; 706 char path[MAXPATHLEN]; 707 struct pf_keth_ruleset ruleset; 708 int refcnt; /* anchor rules */ 709 uint8_t anchor_relative; 710 uint8_t anchor_wildcard; 711 }; 712 RB_PROTOTYPE(pf_keth_anchor_node, pf_keth_anchor, entry_node, 713 pf_keth_anchor_compare); 714 RB_PROTOTYPE(pf_keth_anchor_global, pf_keth_anchor, entry_global, 715 pf_keth_anchor_compare); 716 717 struct pf_keth_rule { 718 #define PFE_SKIP_IFP 0 719 #define PFE_SKIP_DIR 1 720 #define PFE_SKIP_PROTO 2 721 #define PFE_SKIP_SRC_ADDR 3 722 #define PFE_SKIP_DST_ADDR 4 723 #define PFE_SKIP_SRC_IP_ADDR 5 724 #define PFE_SKIP_DST_IP_ADDR 6 725 #define PFE_SKIP_COUNT 7 726 union pf_keth_rule_ptr skip[PFE_SKIP_COUNT]; 727 728 TAILQ_ENTRY(pf_keth_rule) entries; 729 730 struct pf_keth_anchor *anchor; 731 u_int8_t anchor_relative; 732 u_int8_t anchor_wildcard; 733 734 uint32_t nr; 735 736 bool quick; 737 738 /* Filter */ 739 char ifname[IFNAMSIZ]; 740 struct pfi_kkif *kif; 741 bool ifnot; 742 uint8_t direction; 743 uint16_t proto; 744 struct pf_keth_rule_addr src, dst; 745 struct pf_rule_addr ipsrc, ipdst; 746 char match_tagname[PF_TAG_NAME_SIZE]; 747 uint16_t match_tag; 748 bool match_tag_not; 749 750 751 /* Stats */ 752 counter_u64_t evaluations; 753 counter_u64_t packets[2]; 754 counter_u64_t bytes[2]; 755 time_t *timestamp; 756 757 /* Action */ 758 char qname[PF_QNAME_SIZE]; 759 int qid; 760 char tagname[PF_TAG_NAME_SIZE]; 761 uint16_t tag; 762 char bridge_to_name[IFNAMSIZ]; 763 struct pfi_kkif *bridge_to; 764 uint8_t action; 765 uint16_t dnpipe; 766 uint32_t dnflags; 767 768 char label[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE]; 769 uint32_t ridentifier; 770 }; 771 772 struct pf_kthreshold { 773 uint32_t limit; 774 uint32_t seconds; 775 struct counter_rate *cr; 776 }; 777 778 RB_HEAD(pf_krule_global, pf_krule); 779 RB_PROTOTYPE(pf_krule_global, pf_krule, entry_global, pf_krule_compare); 780 781 struct pf_krule { 782 struct pf_rule_addr src; 783 struct pf_rule_addr dst; 784 struct pf_krule *skip[PF_SKIP_COUNT]; 785 char label[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE]; 786 uint32_t ridentifier; 787 char ifname[IFNAMSIZ]; 788 char rcv_ifname[IFNAMSIZ]; 789 char qname[PF_QNAME_SIZE]; 790 char pqname[PF_QNAME_SIZE]; 791 char tagname[PF_TAG_NAME_SIZE]; 792 char match_tagname[PF_TAG_NAME_SIZE]; 793 794 char overload_tblname[PF_TABLE_NAME_SIZE]; 795 796 TAILQ_ENTRY(pf_krule) entries; 797 struct pf_kpool nat; 798 struct pf_kpool rdr; 799 struct pf_kpool route; 800 struct pf_kthreshold pktrate; 801 802 struct pf_counter_u64 evaluations; 803 struct pf_counter_u64 packets[2]; 804 struct pf_counter_u64 bytes[2]; 805 time_t *timestamp; 806 807 struct pfi_kkif *kif; 808 struct pfi_kkif *rcv_kif; 809 struct pf_kanchor *anchor; 810 struct pfr_ktable *overload_tbl; 811 812 pf_osfp_t os_fingerprint; 813 814 int32_t rtableid; 815 u_int32_t timeout[PFTM_MAX]; 816 u_int32_t max_states; 817 u_int32_t max_src_nodes; 818 u_int32_t max_src_states; 819 u_int32_t max_src_conn; 820 struct { 821 u_int32_t limit; 822 u_int32_t seconds; 823 } max_src_conn_rate; 824 uint16_t max_pkt_size; 825 u_int16_t qid; 826 u_int16_t pqid; 827 u_int16_t dnpipe; 828 u_int16_t dnrpipe; 829 u_int32_t free_flags; 830 u_int32_t nr; 831 u_int32_t prob; 832 uid_t cuid; 833 pid_t cpid; 834 835 counter_u64_t states_cur; 836 counter_u64_t states_tot; 837 counter_u64_t src_nodes[PF_SN_MAX]; 838 839 u_int16_t return_icmp; 840 u_int16_t return_icmp6; 841 u_int16_t max_mss; 842 u_int16_t tag; 843 u_int16_t match_tag; 844 u_int16_t scrub_flags; 845 846 struct pf_rule_uid uid; 847 struct pf_rule_gid gid; 848 849 u_int32_t rule_flag; 850 uint32_t rule_ref; 851 u_int8_t action; 852 u_int8_t direction; 853 u_int8_t log; 854 u_int8_t logif; 855 u_int8_t quick; 856 u_int8_t ifnot; 857 u_int8_t match_tag_not; 858 u_int8_t natpass; 859 860 u_int8_t keep_state; 861 sa_family_t af; 862 u_int8_t proto; 863 u_int8_t type; 864 u_int8_t code; 865 u_int8_t flags; 866 u_int8_t flagset; 867 u_int8_t min_ttl; 868 u_int8_t allow_opts; 869 u_int8_t rt; 870 u_int8_t return_ttl; 871 u_int8_t tos; 872 u_int8_t set_tos; 873 u_int8_t anchor_relative; 874 u_int8_t anchor_wildcard; 875 876 u_int8_t flush; 877 u_int8_t prio; 878 u_int8_t set_prio[2]; 879 sa_family_t naf; 880 u_int8_t rcvifnot; 881 882 struct { 883 struct pf_addr addr; 884 u_int16_t port; 885 } divert; 886 u_int8_t md5sum[PF_MD5_DIGEST_LENGTH]; 887 RB_ENTRY(pf_krule) entry_global; 888 889 #ifdef PF_WANT_32_TO_64_COUNTER 890 LIST_ENTRY(pf_krule) allrulelist; 891 bool allrulelinked; 892 #endif 893 }; 894 895 struct pf_krule_item { 896 SLIST_ENTRY(pf_krule_item) entry; 897 struct pf_krule *r; 898 }; 899 900 SLIST_HEAD(pf_krule_slist, pf_krule_item); 901 902 struct pf_ksrc_node { 903 LIST_ENTRY(pf_ksrc_node) entry; 904 struct pf_addr addr; 905 struct pf_addr raddr; 906 struct pf_krule_slist match_rules; 907 struct pf_krule *rule; 908 struct pfi_kkif *rkif; 909 counter_u64_t bytes[2]; 910 counter_u64_t packets[2]; 911 u_int32_t states; 912 u_int32_t conn; 913 struct pf_kthreshold conn_rate; 914 u_int32_t creation; 915 u_int32_t expire; 916 sa_family_t af; 917 sa_family_t raf; 918 u_int8_t ruletype; 919 pf_sn_types_t type; 920 struct mtx *lock; 921 }; 922 #endif 923 924 struct pf_state_scrub { 925 struct timeval pfss_last; /* time received last packet */ 926 u_int32_t pfss_tsecr; /* last echoed timestamp */ 927 u_int32_t pfss_tsval; /* largest timestamp */ 928 u_int32_t pfss_tsval0; /* original timestamp */ 929 u_int16_t pfss_flags; 930 #define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */ 931 #define PFSS_PAWS 0x0010 /* stricter PAWS checks */ 932 #define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */ 933 #define PFSS_DATA_TS 0x0040 /* timestamp on data packets */ 934 #define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */ 935 u_int8_t pfss_ttl; /* stashed TTL */ 936 u_int8_t pad; 937 union { 938 u_int32_t pfss_ts_mod; /* timestamp modulation */ 939 u_int32_t pfss_v_tag; /* SCTP verification tag */ 940 }; 941 }; 942 943 struct pf_state_host { 944 struct pf_addr addr; 945 u_int16_t port; 946 u_int16_t pad; 947 }; 948 949 struct pf_state_peer { 950 struct pf_state_scrub *scrub; /* state is scrubbed */ 951 u_int32_t seqlo; /* Max sequence number sent */ 952 u_int32_t seqhi; /* Max the other end ACKd + win */ 953 u_int32_t seqdiff; /* Sequence number modulator */ 954 u_int16_t max_win; /* largest window (pre scaling) */ 955 u_int16_t mss; /* Maximum segment size option */ 956 u_int8_t state; /* active state level */ 957 u_int8_t wscale; /* window scaling factor */ 958 u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */ 959 u_int8_t pad[1]; 960 }; 961 962 /* Keep synced with struct pf_udp_endpoint. */ 963 struct pf_udp_endpoint_cmp { 964 struct pf_addr addr; 965 uint16_t port; 966 sa_family_t af; 967 uint8_t pad[1]; 968 }; 969 970 struct pf_udp_endpoint { 971 struct pf_addr addr; 972 uint16_t port; 973 sa_family_t af; 974 uint8_t pad[1]; 975 976 struct pf_udp_mapping *mapping; 977 LIST_ENTRY(pf_udp_endpoint) entry; 978 }; 979 980 struct pf_udp_mapping { 981 struct pf_udp_endpoint endpoints[2]; 982 u_int refs; 983 }; 984 985 /* Keep synced with struct pf_state_key. */ 986 struct pf_state_key_cmp { 987 struct pf_addr addr[2]; 988 u_int16_t port[2]; 989 sa_family_t af; 990 u_int8_t proto; 991 u_int8_t pad[2]; 992 }; 993 994 struct pf_state_key { 995 struct pf_addr addr[2]; 996 u_int16_t port[2]; 997 sa_family_t af; 998 u_int8_t proto; 999 u_int8_t pad[2]; 1000 1001 LIST_ENTRY(pf_state_key) entry; 1002 TAILQ_HEAD(, pf_kstate) states[2]; 1003 }; 1004 1005 #define PF_REVERSED_KEY(state, family) \ 1006 (((state)->key[PF_SK_WIRE]->af != (state)->key[PF_SK_STACK]->af) && \ 1007 ((state)->key[PF_SK_WIRE]->af != (family)) && \ 1008 ((state)->direction == PF_IN)) 1009 1010 /* Keep synced with struct pf_kstate. */ 1011 struct pf_state_cmp { 1012 u_int64_t id; 1013 u_int32_t creatorid; 1014 u_int8_t direction; 1015 u_int8_t pad[3]; 1016 }; 1017 1018 struct pf_state_scrub_export { 1019 uint16_t pfss_flags; 1020 uint8_t pfss_ttl; /* stashed TTL */ 1021 #define PF_SCRUB_FLAG_VALID 0x01 1022 uint8_t scrub_flag; 1023 uint32_t pfss_ts_mod; /* timestamp modulation */ 1024 } __packed; 1025 1026 struct pf_state_key_export { 1027 struct pf_addr addr[2]; 1028 uint16_t port[2]; 1029 }; 1030 1031 struct pf_state_peer_export { 1032 struct pf_state_scrub_export scrub; /* state is scrubbed */ 1033 uint32_t seqlo; /* Max sequence number sent */ 1034 uint32_t seqhi; /* Max the other end ACKd + win */ 1035 uint32_t seqdiff; /* Sequence number modulator */ 1036 uint16_t max_win; /* largest window (pre scaling) */ 1037 uint16_t mss; /* Maximum segment size option */ 1038 uint8_t state; /* active state level */ 1039 uint8_t wscale; /* window scaling factor */ 1040 uint8_t dummy[6]; 1041 } __packed; 1042 _Static_assert(sizeof(struct pf_state_peer_export) == 32, "size incorrect"); 1043 1044 struct pf_state_export { 1045 uint64_t version; 1046 #define PF_STATE_VERSION 20230404 1047 uint64_t id; 1048 char ifname[IFNAMSIZ]; 1049 char orig_ifname[IFNAMSIZ]; 1050 struct pf_state_key_export key[2]; 1051 struct pf_state_peer_export src; 1052 struct pf_state_peer_export dst; 1053 struct pf_addr rt_addr; 1054 uint32_t rule; 1055 uint32_t anchor; 1056 uint32_t nat_rule; 1057 uint32_t creation; 1058 uint32_t expire; 1059 uint32_t spare0; 1060 uint64_t packets[2]; 1061 uint64_t bytes[2]; 1062 uint32_t creatorid; 1063 uint32_t spare1; 1064 sa_family_t af; 1065 uint8_t proto; 1066 uint8_t direction; 1067 uint8_t log; 1068 uint8_t state_flags_compat; 1069 uint8_t timeout; 1070 uint8_t sync_flags; 1071 uint8_t updates; 1072 uint16_t state_flags; 1073 uint16_t qid; 1074 uint16_t pqid; 1075 uint16_t dnpipe; 1076 uint16_t dnrpipe; 1077 int32_t rtableid; 1078 uint8_t min_ttl; 1079 uint8_t set_tos; 1080 uint16_t max_mss; 1081 uint8_t set_prio[2]; 1082 uint8_t rt; 1083 char rt_ifname[IFNAMSIZ]; 1084 1085 uint8_t spare[72]; 1086 }; 1087 _Static_assert(sizeof(struct pf_state_export) == 384, "size incorrect"); 1088 1089 #ifdef _KERNEL 1090 struct pf_kstate { 1091 /* 1092 * Area shared with pf_state_cmp 1093 */ 1094 u_int64_t id; 1095 u_int32_t creatorid; 1096 u_int8_t direction; 1097 u_int8_t pad[3]; 1098 /* 1099 * end of the area 1100 */ 1101 1102 u_int16_t state_flags; 1103 u_int8_t timeout; 1104 u_int8_t sync_state; /* PFSYNC_S_x */ 1105 u_int8_t sync_updates; 1106 u_int refs; 1107 struct mtx *lock; 1108 TAILQ_ENTRY(pf_kstate) sync_list; 1109 TAILQ_ENTRY(pf_kstate) key_list[2]; 1110 LIST_ENTRY(pf_kstate) entry; 1111 struct pf_state_peer src; 1112 struct pf_state_peer dst; 1113 struct pf_krule_slist match_rules; 1114 struct pf_krule *rule; 1115 struct pf_krule *anchor; 1116 struct pf_krule *nat_rule; 1117 struct pf_state_key *key[2]; /* addresses stack and wire */ 1118 struct pf_udp_mapping *udp_mapping; 1119 struct pfi_kkif *kif; 1120 struct pfi_kkif *orig_kif; /* The real kif, even if we're a floating state (i.e. if == V_pfi_all). */ 1121 struct pf_ksrc_node *sns[PF_SN_MAX];/* source nodes */ 1122 u_int64_t packets[2]; 1123 u_int64_t bytes[2]; 1124 u_int64_t creation; 1125 u_int64_t expire; 1126 u_int32_t pfsync_time; 1127 struct pf_rule_actions act; 1128 u_int16_t tag; 1129 u_int16_t if_index_in; 1130 u_int16_t if_index_out; 1131 }; 1132 1133 /* 1134 * 6 cache lines per struct, 10 structs per page. 1135 * Try to not grow the struct beyond that. 1136 */ 1137 _Static_assert(sizeof(struct pf_kstate) <= 384, "pf_kstate size crosses 384 bytes"); 1138 1139 enum pf_test_status { 1140 PF_TEST_FAIL = -1, 1141 PF_TEST_OK, 1142 PF_TEST_QUICK 1143 }; 1144 1145 struct pf_test_ctx { 1146 enum pf_test_status test_status; 1147 struct pf_pdesc *pd; 1148 struct pf_rule_actions act; 1149 uint8_t icmpcode; 1150 uint8_t icmptype; 1151 int icmp_dir; 1152 int state_icmp; 1153 int tag; 1154 int rewrite; 1155 u_short reason; 1156 struct pf_src_node *sns[PF_SN_MAX]; 1157 struct pf_krule_slist rules; 1158 struct pf_krule *nr; 1159 struct pf_krule *tr; 1160 struct pf_krule **rm; 1161 struct pf_krule *a; 1162 struct pf_krule **am; 1163 struct pf_kruleset **rsm; 1164 struct pf_kruleset *arsm; 1165 struct pf_kruleset *aruleset; 1166 struct pf_state_key *sk; 1167 struct pf_state_key *nk; 1168 struct tcphdr *th; 1169 struct pf_udp_mapping *udp_mapping; 1170 struct pf_kpool *nat_pool; 1171 uint16_t virtual_type; 1172 uint16_t virtual_id; 1173 int depth; 1174 }; 1175 1176 #define PF_ANCHOR_STACK_MAX 32 1177 #endif 1178 1179 /* 1180 * Unified state structures for pulling states out of the kernel 1181 * used by pfsync(4) and the pf(4) ioctl. 1182 */ 1183 struct pfsync_state_key { 1184 struct pf_addr addr[2]; 1185 u_int16_t port[2]; 1186 }; 1187 1188 struct pfsync_state_1301 { 1189 u_int64_t id; 1190 char ifname[IFNAMSIZ]; 1191 struct pfsync_state_key key[2]; 1192 struct pf_state_peer_export src; 1193 struct pf_state_peer_export dst; 1194 struct pf_addr rt_addr; 1195 u_int32_t rule; 1196 u_int32_t anchor; 1197 u_int32_t nat_rule; 1198 u_int32_t creation; 1199 u_int32_t expire; 1200 u_int32_t packets[2][2]; 1201 u_int32_t bytes[2][2]; 1202 u_int32_t creatorid; 1203 sa_family_t af; 1204 u_int8_t proto; 1205 u_int8_t direction; 1206 u_int8_t __spare[2]; 1207 u_int8_t log; 1208 u_int8_t state_flags; 1209 u_int8_t timeout; 1210 u_int8_t sync_flags; 1211 u_int8_t updates; 1212 } __packed; 1213 1214 struct pfsync_state_1400 { 1215 /* The beginning of the struct is compatible with previous versions */ 1216 u_int64_t id; 1217 char ifname[IFNAMSIZ]; 1218 struct pfsync_state_key key[2]; 1219 struct pf_state_peer_export src; 1220 struct pf_state_peer_export dst; 1221 struct pf_addr rt_addr; 1222 u_int32_t rule; 1223 u_int32_t anchor; 1224 u_int32_t nat_rule; 1225 u_int32_t creation; 1226 u_int32_t expire; 1227 u_int32_t packets[2][2]; 1228 u_int32_t bytes[2][2]; 1229 u_int32_t creatorid; 1230 sa_family_t af; 1231 u_int8_t proto; 1232 u_int8_t direction; 1233 u_int16_t state_flags; 1234 u_int8_t log; 1235 u_int8_t __spare; 1236 u_int8_t timeout; 1237 u_int8_t sync_flags; 1238 u_int8_t updates; 1239 /* The rest is not */ 1240 u_int16_t qid; 1241 u_int16_t pqid; 1242 u_int16_t dnpipe; 1243 u_int16_t dnrpipe; 1244 int32_t rtableid; 1245 u_int8_t min_ttl; 1246 u_int8_t set_tos; 1247 u_int16_t max_mss; 1248 u_int8_t set_prio[2]; 1249 u_int8_t rt; 1250 char rt_ifname[IFNAMSIZ]; 1251 1252 } __packed; 1253 1254 union pfsync_state_union { 1255 struct pfsync_state_1301 pfs_1301; 1256 struct pfsync_state_1400 pfs_1400; 1257 } __packed; 1258 1259 #ifdef _KERNEL 1260 /* pfsync */ 1261 typedef int pfsync_state_import_t(union pfsync_state_union *, int, int); 1262 typedef void pfsync_insert_state_t(struct pf_kstate *); 1263 typedef void pfsync_update_state_t(struct pf_kstate *); 1264 typedef void pfsync_delete_state_t(struct pf_kstate *); 1265 typedef void pfsync_clear_states_t(u_int32_t, const char *); 1266 typedef int pfsync_defer_t(struct pf_kstate *, struct mbuf *); 1267 typedef void pfsync_detach_ifnet_t(struct ifnet *); 1268 typedef void pflow_export_state_t(const struct pf_kstate *); 1269 typedef bool pf_addr_filter_func_t(const sa_family_t, const struct pf_addr *); 1270 1271 VNET_DECLARE(pfsync_state_import_t *, pfsync_state_import_ptr); 1272 #define V_pfsync_state_import_ptr VNET(pfsync_state_import_ptr) 1273 VNET_DECLARE(pfsync_insert_state_t *, pfsync_insert_state_ptr); 1274 #define V_pfsync_insert_state_ptr VNET(pfsync_insert_state_ptr) 1275 VNET_DECLARE(pfsync_update_state_t *, pfsync_update_state_ptr); 1276 #define V_pfsync_update_state_ptr VNET(pfsync_update_state_ptr) 1277 VNET_DECLARE(pfsync_delete_state_t *, pfsync_delete_state_ptr); 1278 #define V_pfsync_delete_state_ptr VNET(pfsync_delete_state_ptr) 1279 VNET_DECLARE(pfsync_clear_states_t *, pfsync_clear_states_ptr); 1280 #define V_pfsync_clear_states_ptr VNET(pfsync_clear_states_ptr) 1281 VNET_DECLARE(pfsync_defer_t *, pfsync_defer_ptr); 1282 #define V_pfsync_defer_ptr VNET(pfsync_defer_ptr) 1283 VNET_DECLARE(pflow_export_state_t *, pflow_export_state_ptr); 1284 #define V_pflow_export_state_ptr VNET(pflow_export_state_ptr) 1285 extern pfsync_detach_ifnet_t *pfsync_detach_ifnet_ptr; 1286 1287 void pfsync_state_export(union pfsync_state_union *, 1288 struct pf_kstate *, int); 1289 void pf_state_export(struct pf_state_export *, 1290 struct pf_kstate *); 1291 1292 /* pflog */ 1293 struct pf_kruleset; 1294 struct pf_pdesc; 1295 typedef int pflog_packet_t(uint8_t, u_int8_t, 1296 struct pf_krule *, struct pf_krule *, struct pf_kruleset *, 1297 struct pf_pdesc *, int, struct pf_krule *); 1298 extern pflog_packet_t *pflog_packet_ptr; 1299 1300 #endif /* _KERNEL */ 1301 1302 #define PFSYNC_FLAG_SRCNODE 0x04 1303 #define PFSYNC_FLAG_NATSRCNODE 0x08 1304 1305 /* for copies to/from network byte order */ 1306 /* ioctl interface also uses network byte order */ 1307 void pf_state_peer_hton(const struct pf_state_peer *, 1308 struct pf_state_peer_export *); 1309 void pf_state_peer_ntoh(const struct pf_state_peer_export *, 1310 struct pf_state_peer *); 1311 1312 #define pf_state_counter_hton(s,d) do { \ 1313 d[0] = htonl((s>>32)&0xffffffff); \ 1314 d[1] = htonl(s&0xffffffff); \ 1315 } while (0) 1316 1317 #define pf_state_counter_from_pfsync(s) \ 1318 (((u_int64_t)(s[0])<<32) | (u_int64_t)(s[1])) 1319 1320 #define pf_state_counter_ntoh(s,d) do { \ 1321 d = ntohl(s[0]); \ 1322 d = d<<32; \ 1323 d += ntohl(s[1]); \ 1324 } while (0) 1325 1326 TAILQ_HEAD(pf_krulequeue, pf_krule); 1327 1328 struct pf_kanchor; 1329 1330 struct pf_kruleset { 1331 struct { 1332 struct pf_krulequeue queues[2]; 1333 struct { 1334 struct pf_krulequeue *ptr; 1335 u_int32_t rcount; 1336 u_int32_t ticket; 1337 int open; 1338 struct pf_krule_global *tree; 1339 } active, inactive; 1340 } rules[PF_RULESET_MAX]; 1341 struct pf_kanchor *anchor; 1342 u_int32_t tticket; 1343 int tables; 1344 int topen; 1345 }; 1346 1347 RB_HEAD(pf_kanchor_global, pf_kanchor); 1348 RB_HEAD(pf_kanchor_node, pf_kanchor); 1349 struct pf_kanchor { 1350 RB_ENTRY(pf_kanchor) entry_global; 1351 RB_ENTRY(pf_kanchor) entry_node; 1352 struct pf_kanchor *parent; 1353 struct pf_kanchor_node children; 1354 char name[PF_ANCHOR_NAME_SIZE]; 1355 char path[MAXPATHLEN]; 1356 struct pf_kruleset ruleset; 1357 int refcnt; /* anchor rules */ 1358 }; 1359 RB_PROTOTYPE(pf_kanchor_global, pf_kanchor, entry_global, pf_anchor_compare); 1360 RB_PROTOTYPE(pf_kanchor_node, pf_kanchor, entry_node, pf_kanchor_compare); 1361 1362 #define PF_RESERVED_ANCHOR "_pf" 1363 1364 #define PFR_TFLAG_PERSIST 0x00000001 1365 #define PFR_TFLAG_CONST 0x00000002 1366 #define PFR_TFLAG_ACTIVE 0x00000004 1367 #define PFR_TFLAG_INACTIVE 0x00000008 1368 #define PFR_TFLAG_REFERENCED 0x00000010 1369 #define PFR_TFLAG_REFDANCHOR 0x00000020 1370 #define PFR_TFLAG_COUNTERS 0x00000040 1371 /* Adjust masks below when adding flags. */ 1372 #define PFR_TFLAG_USRMASK (PFR_TFLAG_PERSIST | \ 1373 PFR_TFLAG_CONST | \ 1374 PFR_TFLAG_COUNTERS) 1375 #define PFR_TFLAG_SETMASK (PFR_TFLAG_ACTIVE | \ 1376 PFR_TFLAG_INACTIVE | \ 1377 PFR_TFLAG_REFERENCED | \ 1378 PFR_TFLAG_REFDANCHOR) 1379 #define PFR_TFLAG_ALLMASK (PFR_TFLAG_PERSIST | \ 1380 PFR_TFLAG_CONST | \ 1381 PFR_TFLAG_ACTIVE | \ 1382 PFR_TFLAG_INACTIVE | \ 1383 PFR_TFLAG_REFERENCED | \ 1384 PFR_TFLAG_REFDANCHOR | \ 1385 PFR_TFLAG_COUNTERS) 1386 1387 struct pf_keth_anchor_stackframe; 1388 1389 struct pfr_table { 1390 char pfrt_anchor[MAXPATHLEN]; 1391 char pfrt_name[PF_TABLE_NAME_SIZE]; 1392 u_int32_t pfrt_flags; 1393 u_int8_t pfrt_fback; 1394 }; 1395 1396 enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED, 1397 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE, 1398 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_NOCOUNT, PFR_FB_MAX }; 1399 1400 struct pfr_addr { 1401 union { 1402 struct in_addr _pfra_ip4addr; 1403 struct in6_addr _pfra_ip6addr; 1404 } pfra_u; 1405 u_int8_t pfra_af; 1406 u_int8_t pfra_net; 1407 u_int8_t pfra_not; 1408 u_int8_t pfra_fback; 1409 }; 1410 #define pfra_ip4addr pfra_u._pfra_ip4addr 1411 #define pfra_ip6addr pfra_u._pfra_ip6addr 1412 1413 enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX }; 1414 enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX }; 1415 enum { PFR_TYPE_PACKETS, PFR_TYPE_BYTES, PFR_TYPE_MAX }; 1416 #define PFR_NUM_COUNTERS (PFR_DIR_MAX * PFR_OP_ADDR_MAX * PFR_TYPE_MAX) 1417 #define PFR_OP_XPASS PFR_OP_ADDR_MAX 1418 1419 struct pfr_astats { 1420 struct pfr_addr pfras_a; 1421 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1422 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1423 time_t pfras_tzero; 1424 }; 1425 1426 enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX }; 1427 1428 struct pfr_tstats { 1429 struct pfr_table pfrts_t; 1430 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1431 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1432 u_int64_t pfrts_match; 1433 u_int64_t pfrts_nomatch; 1434 time_t pfrts_tzero; 1435 int pfrts_cnt; 1436 int pfrts_refcnt[PFR_REFCNT_MAX]; 1437 }; 1438 1439 #ifdef _KERNEL 1440 1441 struct pfr_kstate_counter { 1442 counter_u64_t pkc_pcpu; 1443 u_int64_t pkc_zero; 1444 }; 1445 1446 static inline int 1447 pfr_kstate_counter_init(struct pfr_kstate_counter *pfrc, int flags) 1448 { 1449 1450 pfrc->pkc_zero = 0; 1451 pfrc->pkc_pcpu = counter_u64_alloc(flags); 1452 if (pfrc->pkc_pcpu == NULL) 1453 return (ENOMEM); 1454 return (0); 1455 } 1456 1457 static inline void 1458 pfr_kstate_counter_deinit(struct pfr_kstate_counter *pfrc) 1459 { 1460 1461 counter_u64_free(pfrc->pkc_pcpu); 1462 } 1463 1464 static inline u_int64_t 1465 pfr_kstate_counter_fetch(struct pfr_kstate_counter *pfrc) 1466 { 1467 u_int64_t c; 1468 1469 c = counter_u64_fetch(pfrc->pkc_pcpu); 1470 c -= pfrc->pkc_zero; 1471 return (c); 1472 } 1473 1474 static inline void 1475 pfr_kstate_counter_zero(struct pfr_kstate_counter *pfrc) 1476 { 1477 u_int64_t c; 1478 1479 c = counter_u64_fetch(pfrc->pkc_pcpu); 1480 pfrc->pkc_zero = c; 1481 } 1482 1483 static inline void 1484 pfr_kstate_counter_add(struct pfr_kstate_counter *pfrc, int64_t n) 1485 { 1486 1487 counter_u64_add(pfrc->pkc_pcpu, n); 1488 } 1489 1490 struct pfr_ktstats { 1491 struct pfr_table pfrts_t; 1492 struct pfr_kstate_counter pfrkts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1493 struct pfr_kstate_counter pfrkts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1494 struct pfr_kstate_counter pfrkts_match; 1495 struct pfr_kstate_counter pfrkts_nomatch; 1496 time_t pfrkts_tzero; 1497 int pfrkts_cnt; 1498 int pfrkts_refcnt[PFR_REFCNT_MAX]; 1499 }; 1500 1501 #endif /* _KERNEL */ 1502 1503 #define pfrts_name pfrts_t.pfrt_name 1504 #define pfrts_flags pfrts_t.pfrt_flags 1505 1506 #ifndef _SOCKADDR_UNION_DEFINED 1507 #define _SOCKADDR_UNION_DEFINED 1508 union sockaddr_union { 1509 struct sockaddr sa; 1510 struct sockaddr_in sin; 1511 struct sockaddr_in6 sin6; 1512 }; 1513 #endif /* _SOCKADDR_UNION_DEFINED */ 1514 1515 struct pfr_kcounters { 1516 counter_u64_t pfrkc_counters; 1517 time_t pfrkc_tzero; 1518 }; 1519 #define pfr_kentry_counter(kc, dir, op, t) \ 1520 ((kc)->pfrkc_counters + \ 1521 (dir) * PFR_OP_ADDR_MAX * PFR_TYPE_MAX + (op) * PFR_TYPE_MAX + (t)) 1522 1523 #ifdef _KERNEL 1524 SLIST_HEAD(pfr_kentryworkq, pfr_kentry); 1525 struct pfr_kentry { 1526 struct radix_node pfrke_node[2]; 1527 union sockaddr_union pfrke_sa; 1528 SLIST_ENTRY(pfr_kentry) pfrke_workq; 1529 struct pfr_kcounters pfrke_counters; 1530 u_int8_t pfrke_af; 1531 u_int8_t pfrke_net; 1532 u_int8_t pfrke_not; 1533 u_int8_t pfrke_mark; 1534 }; 1535 1536 SLIST_HEAD(pfr_ktableworkq, pfr_ktable); 1537 RB_HEAD(pfr_ktablehead, pfr_ktable); 1538 struct pfr_ktable { 1539 struct pfr_ktstats pfrkt_kts; 1540 RB_ENTRY(pfr_ktable) pfrkt_tree; 1541 SLIST_ENTRY(pfr_ktable) pfrkt_workq; 1542 struct radix_node_head *pfrkt_ip4; 1543 struct radix_node_head *pfrkt_ip6; 1544 struct pfr_ktable *pfrkt_shadow; 1545 struct pfr_ktable *pfrkt_root; 1546 struct pf_kruleset *pfrkt_rs; 1547 long pfrkt_larg; 1548 int pfrkt_nflags; 1549 }; 1550 #define pfrkt_t pfrkt_kts.pfrts_t 1551 #define pfrkt_name pfrkt_t.pfrt_name 1552 #define pfrkt_anchor pfrkt_t.pfrt_anchor 1553 #define pfrkt_ruleset pfrkt_t.pfrt_ruleset 1554 #define pfrkt_flags pfrkt_t.pfrt_flags 1555 #define pfrkt_cnt pfrkt_kts.pfrkts_cnt 1556 #define pfrkt_refcnt pfrkt_kts.pfrkts_refcnt 1557 #define pfrkt_packets pfrkt_kts.pfrkts_packets 1558 #define pfrkt_bytes pfrkt_kts.pfrkts_bytes 1559 #define pfrkt_match pfrkt_kts.pfrkts_match 1560 #define pfrkt_nomatch pfrkt_kts.pfrkts_nomatch 1561 #define pfrkt_tzero pfrkt_kts.pfrkts_tzero 1562 #endif 1563 1564 #ifdef _KERNEL 1565 struct pfi_kkif { 1566 char pfik_name[IFNAMSIZ]; 1567 union { 1568 RB_ENTRY(pfi_kkif) _pfik_tree; 1569 LIST_ENTRY(pfi_kkif) _pfik_list; 1570 } _pfik_glue; 1571 #define pfik_tree _pfik_glue._pfik_tree 1572 #define pfik_list _pfik_glue._pfik_list 1573 struct pf_counter_u64 pfik_packets[2][2][2]; 1574 struct pf_counter_u64 pfik_bytes[2][2][2]; 1575 time_t pfik_tzero; 1576 u_int pfik_flags; 1577 struct ifnet *pfik_ifp; 1578 struct ifg_group *pfik_group; 1579 u_int pfik_rulerefs; 1580 TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs; 1581 #ifdef PF_WANT_32_TO_64_COUNTER 1582 LIST_ENTRY(pfi_kkif) pfik_allkiflist; 1583 #endif 1584 }; 1585 #endif 1586 1587 #define PFI_IFLAG_REFS 0x0001 /* has state references */ 1588 #define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */ 1589 #define PFI_IFLAG_ANY 0x0200 /* match any non-loopback interface */ 1590 1591 #ifdef _KERNEL 1592 struct pf_sctp_multihome_job; 1593 TAILQ_HEAD(pf_sctp_multihome_jobs, pf_sctp_multihome_job); 1594 1595 struct pf_pdesc { 1596 struct { 1597 int done; 1598 uid_t uid; 1599 gid_t gid; 1600 } lookup; 1601 u_int64_t tot_len; /* Make Mickey money */ 1602 union pf_headers { 1603 struct tcphdr tcp; 1604 struct udphdr udp; 1605 struct sctphdr sctp; 1606 struct icmp icmp; 1607 #ifdef INET6 1608 struct icmp6_hdr icmp6; 1609 #endif /* INET6 */ 1610 char any[0]; 1611 } hdr; 1612 1613 struct pf_addr nsaddr; /* src address after NAT */ 1614 struct pf_addr ndaddr; /* dst address after NAT */ 1615 1616 struct pfi_kkif *kif; /* incomming interface */ 1617 struct mbuf *m; 1618 1619 struct pf_addr *src; /* src address */ 1620 struct pf_addr *dst; /* dst address */ 1621 struct pf_addr osrc; 1622 struct pf_addr odst; 1623 u_int16_t *pcksum; /* proto cksum */ 1624 u_int16_t *sport; 1625 u_int16_t *dport; 1626 u_int16_t osport; 1627 u_int16_t odport; 1628 u_int16_t nsport; /* src port after NAT */ 1629 u_int16_t ndport; /* dst port after NAT */ 1630 struct pf_mtag *pf_mtag; 1631 struct pf_rule_actions act; 1632 1633 u_int32_t off; /* protocol header offset */ 1634 bool df; /* IPv4 Don't fragment flag. */ 1635 u_int32_t hdrlen; /* protocol header length */ 1636 u_int32_t p_len; /* total length of protocol payload */ 1637 u_int32_t extoff; /* extentsion header offset */ 1638 u_int32_t fragoff; /* fragment header offset */ 1639 u_int32_t jumbolen; /* length from v6 jumbo header */ 1640 u_int32_t badopts; /* v4 options or v6 routing headers */ 1641 #define PF_OPT_OTHER 0x0001 1642 #define PF_OPT_JUMBO 0x0002 1643 #define PF_OPT_ROUTER_ALERT 0x0004 1644 1645 u_int16_t *ip_sum; 1646 u_int16_t flags; /* Let SCRUB trigger behavior in 1647 * state code. Easier than tags */ 1648 #define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */ 1649 u_int16_t virtual_proto; 1650 #define PF_VPROTO_FRAGMENT 256 1651 sa_family_t af; 1652 sa_family_t naf; 1653 u_int8_t proto; 1654 u_int8_t tos; 1655 u_int8_t ttl; 1656 u_int8_t dir; /* direction */ 1657 u_int8_t sidx; /* key index for source */ 1658 u_int8_t didx; /* key index for destination */ 1659 #define PFDESC_SCTP_INIT 0x0001 1660 #define PFDESC_SCTP_INIT_ACK 0x0002 1661 #define PFDESC_SCTP_COOKIE 0x0004 1662 #define PFDESC_SCTP_COOKIE_ACK 0x0008 1663 #define PFDESC_SCTP_ABORT 0x0010 1664 #define PFDESC_SCTP_SHUTDOWN 0x0020 1665 #define PFDESC_SCTP_SHUTDOWN_COMPLETE 0x0040 1666 #define PFDESC_SCTP_DATA 0x0080 1667 #define PFDESC_SCTP_ASCONF 0x0100 1668 #define PFDESC_SCTP_HEARTBEAT 0x0200 1669 #define PFDESC_SCTP_HEARTBEAT_ACK 0x0400 1670 #define PFDESC_SCTP_OTHER 0x0800 1671 #define PFDESC_SCTP_ADD_IP 0x1000 1672 u_int16_t sctp_flags; 1673 u_int32_t sctp_initiate_tag; 1674 u_int16_t sctp_dummy_sum; 1675 struct pf_krule *related_rule; 1676 1677 struct pf_sctp_multihome_jobs sctp_multihome_jobs; 1678 }; 1679 1680 struct pf_sctp_multihome_job { 1681 TAILQ_ENTRY(pf_sctp_multihome_job) next; 1682 struct pf_pdesc pd; 1683 struct pf_addr src; 1684 struct pf_addr dst; 1685 int op; 1686 }; 1687 1688 #endif 1689 1690 /* flags for RDR options */ 1691 #define PF_DPORT_RANGE 0x01 /* Dest port uses range */ 1692 #define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */ 1693 1694 /* UDP state enumeration */ 1695 #define PFUDPS_NO_TRAFFIC 0 1696 #define PFUDPS_SINGLE 1 1697 #define PFUDPS_MULTIPLE 2 1698 1699 #define PFUDPS_NSTATES 3 /* number of state levels */ 1700 1701 #define PFUDPS_NAMES { \ 1702 "NO_TRAFFIC", \ 1703 "SINGLE", \ 1704 "MULTIPLE", \ 1705 NULL \ 1706 } 1707 1708 /* Other protocol state enumeration */ 1709 #define PFOTHERS_NO_TRAFFIC 0 1710 #define PFOTHERS_SINGLE 1 1711 #define PFOTHERS_MULTIPLE 2 1712 1713 #define PFOTHERS_NSTATES 3 /* number of state levels */ 1714 1715 #define PFOTHERS_NAMES { \ 1716 "NO_TRAFFIC", \ 1717 "SINGLE", \ 1718 "MULTIPLE", \ 1719 NULL \ 1720 } 1721 1722 #define ACTION_SET(a, x) \ 1723 do { \ 1724 if ((a) != NULL) \ 1725 *(a) = (x); \ 1726 } while (0) 1727 1728 #define REASON_SET(a, x) \ 1729 do { \ 1730 SDT_PROBE2(pf, , test, reason_set, x, __LINE__); \ 1731 if ((a) != NULL) \ 1732 *(a) = (x); \ 1733 if (x < PFRES_MAX) \ 1734 counter_u64_add(V_pf_status.counters[x], 1); \ 1735 } while (0) 1736 1737 enum pf_syncookies_mode { 1738 PF_SYNCOOKIES_NEVER = 0, 1739 PF_SYNCOOKIES_ALWAYS = 1, 1740 PF_SYNCOOKIES_ADAPTIVE = 2, 1741 PF_SYNCOOKIES_MODE_MAX = PF_SYNCOOKIES_ADAPTIVE 1742 }; 1743 1744 #define PF_SYNCOOKIES_HIWATPCT 25 1745 #define PF_SYNCOOKIES_LOWATPCT (PF_SYNCOOKIES_HIWATPCT / 2) 1746 1747 #ifdef _KERNEL 1748 struct pf_kstatus { 1749 counter_u64_t counters[PFRES_MAX]; /* reason for passing/dropping */ 1750 counter_u64_t lcounters[KLCNT_MAX]; /* limit counters */ 1751 struct pf_counter_u64 fcounters[FCNT_MAX]; /* state operation counters */ 1752 counter_u64_t scounters[SCNT_MAX]; /* src_node operation counters */ 1753 uint32_t states; 1754 uint32_t src_nodes; 1755 uint32_t running; 1756 uint32_t since; 1757 uint32_t debug; 1758 uint32_t hostid; 1759 char ifname[IFNAMSIZ]; 1760 uint8_t pf_chksum[PF_MD5_DIGEST_LENGTH]; 1761 bool keep_counters; 1762 enum pf_syncookies_mode syncookies_mode; 1763 bool syncookies_active; 1764 uint64_t syncookies_inflight[2]; 1765 uint32_t states_halfopen; 1766 uint32_t reass; 1767 }; 1768 #endif 1769 1770 struct pf_divert { 1771 union { 1772 struct in_addr ipv4; 1773 struct in6_addr ipv6; 1774 } addr; 1775 u_int16_t port; 1776 }; 1777 1778 #define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */ 1779 #define PFR_KENTRY_HIWAT 200000 /* Number of table entries */ 1780 1781 struct pf_fragment_tag { 1782 uint16_t ft_hdrlen; /* header length of reassembled pkt */ 1783 uint16_t ft_extoff; /* last extension header offset or 0 */ 1784 uint16_t ft_maxlen; /* maximum fragment payload length */ 1785 uint32_t ft_id; /* fragment id */ 1786 }; 1787 1788 /* 1789 * Limit the length of the fragment queue traversal. Remember 1790 * search entry points based on the fragment offset. 1791 */ 1792 #define PF_FRAG_ENTRY_POINTS 16 1793 1794 /* 1795 * The number of entries in the fragment queue must be limited 1796 * to avoid DoS by linear searching. Instead of a global limit, 1797 * use a limit per entry point. For large packets these sum up. 1798 */ 1799 #define PF_FRAG_ENTRY_LIMIT 64 1800 1801 /* 1802 * ioctl parameter structures 1803 */ 1804 1805 struct pfioc_pooladdr { 1806 u_int32_t action; 1807 u_int32_t ticket; 1808 u_int32_t nr; 1809 u_int32_t r_num; 1810 u_int8_t r_action; 1811 u_int8_t r_last; 1812 u_int8_t af; 1813 char anchor[MAXPATHLEN]; 1814 struct pf_pooladdr addr; 1815 }; 1816 1817 struct pfioc_rule { 1818 u_int32_t action; 1819 u_int32_t ticket; 1820 u_int32_t pool_ticket; 1821 u_int32_t nr; 1822 char anchor[MAXPATHLEN]; 1823 char anchor_call[MAXPATHLEN]; 1824 struct pf_rule rule; 1825 }; 1826 1827 struct pfioc_natlook { 1828 struct pf_addr saddr; 1829 struct pf_addr daddr; 1830 struct pf_addr rsaddr; 1831 struct pf_addr rdaddr; 1832 u_int16_t sport; 1833 u_int16_t dport; 1834 u_int16_t rsport; 1835 u_int16_t rdport; 1836 sa_family_t af; 1837 u_int8_t proto; 1838 u_int8_t direction; 1839 }; 1840 1841 struct pfioc_state { 1842 struct pfsync_state_1301 state; 1843 }; 1844 1845 struct pfioc_src_node_kill { 1846 sa_family_t psnk_af; 1847 struct pf_rule_addr psnk_src; 1848 struct pf_rule_addr psnk_dst; 1849 u_int psnk_killed; 1850 }; 1851 1852 #ifdef _KERNEL 1853 struct pf_kstate_kill { 1854 struct pf_state_cmp psk_pfcmp; 1855 sa_family_t psk_af; 1856 int psk_proto; 1857 struct pf_rule_addr psk_src; 1858 struct pf_rule_addr psk_dst; 1859 struct pf_rule_addr psk_rt_addr; 1860 char psk_ifname[IFNAMSIZ]; 1861 char psk_label[PF_RULE_LABEL_SIZE]; 1862 u_int psk_killed; 1863 bool psk_kill_match; 1864 bool psk_nat; 1865 }; 1866 #endif 1867 1868 struct pfioc_state_kill { 1869 struct pf_state_cmp psk_pfcmp; 1870 sa_family_t psk_af; 1871 int psk_proto; 1872 struct pf_rule_addr psk_src; 1873 struct pf_rule_addr psk_dst; 1874 char psk_ifname[IFNAMSIZ]; 1875 char psk_label[PF_RULE_LABEL_SIZE]; 1876 u_int psk_killed; 1877 }; 1878 1879 struct pfioc_states { 1880 int ps_len; 1881 union { 1882 void *ps_buf; 1883 struct pfsync_state_1301 *ps_states; 1884 }; 1885 }; 1886 1887 struct pfioc_states_v2 { 1888 int ps_len; 1889 uint64_t ps_req_version; 1890 union { 1891 void *ps_buf; 1892 struct pf_state_export *ps_states; 1893 }; 1894 }; 1895 1896 struct pfioc_src_nodes { 1897 int psn_len; 1898 union { 1899 void *psn_buf; 1900 struct pf_src_node *psn_src_nodes; 1901 }; 1902 }; 1903 1904 struct pfioc_if { 1905 char ifname[IFNAMSIZ]; 1906 }; 1907 1908 struct pfioc_tm { 1909 int timeout; 1910 int seconds; 1911 }; 1912 1913 struct pfioc_limit { 1914 int index; 1915 unsigned limit; 1916 }; 1917 1918 struct pfioc_altq_v0 { 1919 u_int32_t action; 1920 u_int32_t ticket; 1921 u_int32_t nr; 1922 struct pf_altq_v0 altq; 1923 }; 1924 1925 struct pfioc_altq_v1 { 1926 u_int32_t action; 1927 u_int32_t ticket; 1928 u_int32_t nr; 1929 /* 1930 * Placed here so code that only uses the above parameters can be 1931 * written entirely in terms of the v0 or v1 type. 1932 */ 1933 u_int32_t version; 1934 struct pf_altq_v1 altq; 1935 }; 1936 1937 /* 1938 * Latest version of struct pfioc_altq_vX. This must move in lock-step with 1939 * the latest version of struct pf_altq_vX as it has that struct as a 1940 * member. 1941 */ 1942 #define PFIOC_ALTQ_VERSION PF_ALTQ_VERSION 1943 1944 struct pfioc_qstats_v0 { 1945 u_int32_t ticket; 1946 u_int32_t nr; 1947 void *buf; 1948 int nbytes; 1949 u_int8_t scheduler; 1950 }; 1951 1952 struct pfioc_qstats_v1 { 1953 u_int32_t ticket; 1954 u_int32_t nr; 1955 void *buf; 1956 int nbytes; 1957 u_int8_t scheduler; 1958 /* 1959 * Placed here so code that only uses the above parameters can be 1960 * written entirely in terms of the v0 or v1 type. 1961 */ 1962 u_int32_t version; /* Requested version of stats struct */ 1963 }; 1964 1965 /* Latest version of struct pfioc_qstats_vX */ 1966 #define PFIOC_QSTATS_VERSION 1 1967 1968 struct pfioc_ruleset { 1969 u_int32_t nr; 1970 char path[MAXPATHLEN]; 1971 char name[PF_ANCHOR_NAME_SIZE]; 1972 }; 1973 1974 #define PF_RULESET_ALTQ (PF_RULESET_MAX) 1975 #define PF_RULESET_TABLE (PF_RULESET_MAX+1) 1976 #define PF_RULESET_ETH (PF_RULESET_MAX+2) 1977 struct pfioc_trans { 1978 int size; /* number of elements */ 1979 int esize; /* size of each element in bytes */ 1980 struct pfioc_trans_e { 1981 int rs_num; 1982 char anchor[MAXPATHLEN]; 1983 u_int32_t ticket; 1984 } *array; 1985 }; 1986 1987 #define PFR_FLAG_ATOMIC 0x00000001 /* unused */ 1988 #define PFR_FLAG_DUMMY 0x00000002 1989 #define PFR_FLAG_FEEDBACK 0x00000004 1990 #define PFR_FLAG_CLSTATS 0x00000008 1991 #define PFR_FLAG_ADDRSTOO 0x00000010 1992 #define PFR_FLAG_REPLACE 0x00000020 1993 #define PFR_FLAG_ALLRSETS 0x00000040 1994 #define PFR_FLAG_ALLMASK 0x0000007F 1995 #ifdef _KERNEL 1996 #define PFR_FLAG_USERIOCTL 0x10000000 1997 #endif 1998 1999 struct pfioc_table { 2000 struct pfr_table pfrio_table; 2001 void *pfrio_buffer; 2002 int pfrio_esize; 2003 int pfrio_size; 2004 int pfrio_size2; 2005 int pfrio_nadd; 2006 int pfrio_ndel; 2007 int pfrio_nchange; 2008 int pfrio_flags; 2009 u_int32_t pfrio_ticket; 2010 }; 2011 #define pfrio_exists pfrio_nadd 2012 #define pfrio_nzero pfrio_nadd 2013 #define pfrio_nmatch pfrio_nadd 2014 #define pfrio_naddr pfrio_size2 2015 #define pfrio_setflag pfrio_size2 2016 #define pfrio_clrflag pfrio_nadd 2017 2018 struct pfioc_iface { 2019 char pfiio_name[IFNAMSIZ]; 2020 void *pfiio_buffer; 2021 int pfiio_esize; 2022 int pfiio_size; 2023 int pfiio_nzero; 2024 int pfiio_flags; 2025 }; 2026 2027 /* 2028 * ioctl operations 2029 */ 2030 2031 #define DIOCSTART _IO ('D', 1) 2032 #define DIOCSTOP _IO ('D', 2) 2033 #define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule) 2034 #define DIOCADDRULENV _IOWR('D', 4, struct pfioc_nv) 2035 #define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule) 2036 #define DIOCGETRULENV _IOWR('D', 7, struct pfioc_nv) 2037 #define DIOCCLRSTATESNV _IOWR('D', 18, struct pfioc_nv) 2038 #define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state) 2039 #define DIOCGETSTATENV _IOWR('D', 19, struct pfioc_nv) 2040 #define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if) 2041 #define DIOCGETSTATUSNV _IOWR('D', 21, struct pfioc_nv) 2042 #define DIOCCLRSTATUS _IO ('D', 22) 2043 #define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook) 2044 #define DIOCSETDEBUG _IOWR('D', 24, u_int32_t) 2045 #ifdef COMPAT_FREEBSD14 2046 #define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states) 2047 #endif 2048 #define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule) 2049 #define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm) 2050 #define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm) 2051 #define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state) 2052 #define DIOCCLRRULECTRS _IO ('D', 38) 2053 #define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit) 2054 #define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit) 2055 #define DIOCKILLSTATESNV _IOWR('D', 41, struct pfioc_nv) 2056 #define DIOCSTARTALTQ _IO ('D', 42) 2057 #define DIOCSTOPALTQ _IO ('D', 43) 2058 #define DIOCADDALTQV0 _IOWR('D', 45, struct pfioc_altq_v0) 2059 #define DIOCADDALTQV1 _IOWR('D', 45, struct pfioc_altq_v1) 2060 #define DIOCGETALTQSV0 _IOWR('D', 47, struct pfioc_altq_v0) 2061 #define DIOCGETALTQSV1 _IOWR('D', 47, struct pfioc_altq_v1) 2062 #define DIOCGETALTQV0 _IOWR('D', 48, struct pfioc_altq_v0) 2063 #define DIOCGETALTQV1 _IOWR('D', 48, struct pfioc_altq_v1) 2064 #define DIOCCHANGEALTQV0 _IOWR('D', 49, struct pfioc_altq_v0) 2065 #define DIOCCHANGEALTQV1 _IOWR('D', 49, struct pfioc_altq_v1) 2066 #define DIOCGETQSTATSV0 _IOWR('D', 50, struct pfioc_qstats_v0) 2067 #define DIOCGETQSTATSV1 _IOWR('D', 50, struct pfioc_qstats_v1) 2068 #define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr) 2069 #define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr) 2070 #define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr) 2071 #define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr) 2072 #define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr) 2073 #define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset) 2074 #define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset) 2075 #define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table) 2076 #define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table) 2077 #define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table) 2078 #define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table) 2079 #define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table) 2080 #define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table) 2081 #define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table) 2082 #define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table) 2083 #define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table) 2084 #define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table) 2085 #define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table) 2086 #define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table) 2087 #define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table) 2088 #define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table) 2089 #define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table) 2090 #define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table) 2091 #define DIOCOSFPFLUSH _IO('D', 78) 2092 #define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl) 2093 #define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl) 2094 #define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans) 2095 #define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans) 2096 #define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans) 2097 #define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes) 2098 #define DIOCCLRSRCNODES _IO('D', 85) 2099 #define DIOCSETHOSTID _IOWR('D', 86, u_int32_t) 2100 #define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface) 2101 #define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface) 2102 #define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface) 2103 #define DIOCKILLSRCNODES _IOWR('D', 91, struct pfioc_src_node_kill) 2104 #define DIOCGIFSPEEDV0 _IOWR('D', 92, struct pf_ifspeed_v0) 2105 #define DIOCGIFSPEEDV1 _IOWR('D', 92, struct pf_ifspeed_v1) 2106 #ifdef COMPAT_FREEBSD14 2107 #define DIOCGETSTATESV2 _IOWR('D', 93, struct pfioc_states_v2) 2108 #endif 2109 #define DIOCGETSYNCOOKIES _IOWR('D', 94, struct pfioc_nv) 2110 #define DIOCSETSYNCOOKIES _IOWR('D', 95, struct pfioc_nv) 2111 #define DIOCKEEPCOUNTERS _IOWR('D', 96, struct pfioc_nv) 2112 #define DIOCKEEPCOUNTERS_FREEBSD13 _IOWR('D', 92, struct pfioc_nv) 2113 #define DIOCADDETHRULE _IOWR('D', 97, struct pfioc_nv) 2114 #define DIOCGETETHRULE _IOWR('D', 98, struct pfioc_nv) 2115 #define DIOCGETETHRULES _IOWR('D', 99, struct pfioc_nv) 2116 #define DIOCGETETHRULESETS _IOWR('D', 100, struct pfioc_nv) 2117 #define DIOCGETETHRULESET _IOWR('D', 101, struct pfioc_nv) 2118 #define DIOCSETREASS _IOWR('D', 102, u_int32_t) 2119 2120 struct pf_ifspeed_v0 { 2121 char ifname[IFNAMSIZ]; 2122 u_int32_t baudrate; 2123 }; 2124 2125 struct pf_ifspeed_v1 { 2126 char ifname[IFNAMSIZ]; 2127 u_int32_t baudrate32; 2128 /* layout identical to struct pf_ifspeed_v0 up to this point */ 2129 u_int64_t baudrate; 2130 }; 2131 2132 /* Latest version of struct pf_ifspeed_vX */ 2133 #define PF_IFSPEED_VERSION 1 2134 2135 /* 2136 * Compatibility and convenience macros 2137 */ 2138 #ifndef _KERNEL 2139 #ifdef PFIOC_USE_LATEST 2140 /* 2141 * Maintaining in-tree consumers of the ioctl interface is easier when that 2142 * code can be written in terms old names that refer to the latest interface 2143 * version as that reduces the required changes in the consumers to those 2144 * that are functionally necessary to accommodate a new interface version. 2145 */ 2146 #define pfioc_altq __CONCAT(pfioc_altq_v, PFIOC_ALTQ_VERSION) 2147 #define pfioc_qstats __CONCAT(pfioc_qstats_v, PFIOC_QSTATS_VERSION) 2148 #define pf_ifspeed __CONCAT(pf_ifspeed_v, PF_IFSPEED_VERSION) 2149 2150 #define DIOCADDALTQ __CONCAT(DIOCADDALTQV, PFIOC_ALTQ_VERSION) 2151 #define DIOCGETALTQS __CONCAT(DIOCGETALTQSV, PFIOC_ALTQ_VERSION) 2152 #define DIOCGETALTQ __CONCAT(DIOCGETALTQV, PFIOC_ALTQ_VERSION) 2153 #define DIOCCHANGEALTQ __CONCAT(DIOCCHANGEALTQV, PFIOC_ALTQ_VERSION) 2154 #define DIOCGETQSTATS __CONCAT(DIOCGETQSTATSV, PFIOC_QSTATS_VERSION) 2155 #define DIOCGIFSPEED __CONCAT(DIOCGIFSPEEDV, PF_IFSPEED_VERSION) 2156 #else 2157 /* 2158 * When building out-of-tree code that is written for the old interface, 2159 * such as may exist in ports for example, resolve the old struct tags and 2160 * ioctl command names to the v0 versions. 2161 */ 2162 #define pfioc_altq __CONCAT(pfioc_altq_v, 0) 2163 #define pfioc_qstats __CONCAT(pfioc_qstats_v, 0) 2164 #define pf_ifspeed __CONCAT(pf_ifspeed_v, 0) 2165 2166 #define DIOCADDALTQ __CONCAT(DIOCADDALTQV, 0) 2167 #define DIOCGETALTQS __CONCAT(DIOCGETALTQSV, 0) 2168 #define DIOCGETALTQ __CONCAT(DIOCGETALTQV, 0) 2169 #define DIOCCHANGEALTQ __CONCAT(DIOCCHANGEALTQV, 0) 2170 #define DIOCGETQSTATS __CONCAT(DIOCGETQSTATSV, 0) 2171 #define DIOCGIFSPEED __CONCAT(DIOCGIFSPEEDV, 0) 2172 #endif /* PFIOC_USE_LATEST */ 2173 #endif /* _KERNEL */ 2174 2175 #ifdef _KERNEL 2176 LIST_HEAD(pf_ksrc_node_list, pf_ksrc_node); 2177 struct pf_srchash { 2178 struct pf_ksrc_node_list nodes; 2179 struct mtx lock; 2180 }; 2181 2182 struct pf_keyhash { 2183 LIST_HEAD(, pf_state_key) keys; 2184 struct mtx lock; 2185 }; 2186 2187 struct pf_idhash { 2188 LIST_HEAD(, pf_kstate) states; 2189 struct mtx lock; 2190 }; 2191 2192 struct pf_udpendpointhash { 2193 LIST_HEAD(, pf_udp_endpoint) endpoints; 2194 /* refcont is synchronized on the source endpoint's row lock */ 2195 struct mtx lock; 2196 }; 2197 2198 extern u_long pf_ioctl_maxcount; 2199 VNET_DECLARE(u_long, pf_hashmask); 2200 #define V_pf_hashmask VNET(pf_hashmask) 2201 VNET_DECLARE(u_long, pf_srchashmask); 2202 #define V_pf_srchashmask VNET(pf_srchashmask) 2203 VNET_DECLARE(u_long, pf_udpendpointhashmask); 2204 #define V_pf_udpendpointhashmask VNET(pf_udpendpointhashmask) 2205 #define PF_HASHSIZ (131072) 2206 #define PF_SRCHASHSIZ (PF_HASHSIZ/4) 2207 #define PF_UDPENDHASHSIZ (PF_HASHSIZ/4) 2208 VNET_DECLARE(struct pf_keyhash *, pf_keyhash); 2209 VNET_DECLARE(struct pf_idhash *, pf_idhash); 2210 VNET_DECLARE(struct pf_udpendpointhash *, pf_udpendpointhash); 2211 #define V_pf_keyhash VNET(pf_keyhash) 2212 #define V_pf_idhash VNET(pf_idhash) 2213 #define V_pf_udpendpointhash VNET(pf_udpendpointhash) 2214 VNET_DECLARE(struct pf_srchash *, pf_srchash); 2215 #define V_pf_srchash VNET(pf_srchash) 2216 2217 #define PF_IDHASHID(id) (be64toh(id) % (V_pf_hashmask + 1)) 2218 #define PF_IDHASH(s) PF_IDHASHID((s)->id) 2219 2220 VNET_DECLARE(void *, pf_swi_cookie); 2221 #define V_pf_swi_cookie VNET(pf_swi_cookie) 2222 VNET_DECLARE(struct intr_event *, pf_swi_ie); 2223 #define V_pf_swi_ie VNET(pf_swi_ie) 2224 2225 VNET_DECLARE(struct unrhdr64, pf_stateid); 2226 #define V_pf_stateid VNET(pf_stateid) 2227 2228 TAILQ_HEAD(pf_altqqueue, pf_altq); 2229 VNET_DECLARE(struct pf_altqqueue, pf_altqs[4]); 2230 #define V_pf_altqs VNET(pf_altqs) 2231 VNET_DECLARE(struct pf_kpalist, pf_pabuf[3]); 2232 #define V_pf_pabuf VNET(pf_pabuf) 2233 2234 VNET_DECLARE(u_int32_t, ticket_altqs_active); 2235 #define V_ticket_altqs_active VNET(ticket_altqs_active) 2236 VNET_DECLARE(u_int32_t, ticket_altqs_inactive); 2237 #define V_ticket_altqs_inactive VNET(ticket_altqs_inactive) 2238 VNET_DECLARE(int, altqs_inactive_open); 2239 #define V_altqs_inactive_open VNET(altqs_inactive_open) 2240 VNET_DECLARE(u_int32_t, ticket_pabuf); 2241 #define V_ticket_pabuf VNET(ticket_pabuf) 2242 VNET_DECLARE(struct pf_altqqueue *, pf_altqs_active); 2243 #define V_pf_altqs_active VNET(pf_altqs_active) 2244 VNET_DECLARE(struct pf_altqqueue *, pf_altq_ifs_active); 2245 #define V_pf_altq_ifs_active VNET(pf_altq_ifs_active) 2246 VNET_DECLARE(struct pf_altqqueue *, pf_altqs_inactive); 2247 #define V_pf_altqs_inactive VNET(pf_altqs_inactive) 2248 VNET_DECLARE(struct pf_altqqueue *, pf_altq_ifs_inactive); 2249 #define V_pf_altq_ifs_inactive VNET(pf_altq_ifs_inactive) 2250 2251 VNET_DECLARE(struct pf_krulequeue, pf_unlinked_rules); 2252 #define V_pf_unlinked_rules VNET(pf_unlinked_rules) 2253 2254 #ifdef PF_WANT_32_TO_64_COUNTER 2255 LIST_HEAD(allkiflist_head, pfi_kkif); 2256 VNET_DECLARE(struct allkiflist_head, pf_allkiflist); 2257 #define V_pf_allkiflist VNET(pf_allkiflist) 2258 VNET_DECLARE(size_t, pf_allkifcount); 2259 #define V_pf_allkifcount VNET(pf_allkifcount) 2260 VNET_DECLARE(struct pfi_kkif *, pf_kifmarker); 2261 #define V_pf_kifmarker VNET(pf_kifmarker) 2262 2263 LIST_HEAD(allrulelist_head, pf_krule); 2264 VNET_DECLARE(struct allrulelist_head, pf_allrulelist); 2265 #define V_pf_allrulelist VNET(pf_allrulelist) 2266 VNET_DECLARE(size_t, pf_allrulecount); 2267 #define V_pf_allrulecount VNET(pf_allrulecount) 2268 VNET_DECLARE(struct pf_krule *, pf_rulemarker); 2269 #define V_pf_rulemarker VNET(pf_rulemarker) 2270 #endif 2271 2272 int pf_start(void); 2273 int pf_stop(void); 2274 void pf_initialize(void); 2275 void pf_mtag_initialize(void); 2276 void pf_mtag_cleanup(void); 2277 void pf_cleanup(void); 2278 2279 struct pf_mtag *pf_get_mtag(struct mbuf *); 2280 2281 extern void pf_calc_skip_steps(struct pf_krulequeue *); 2282 #ifdef ALTQ 2283 extern void pf_altq_ifnet_event(struct ifnet *, int); 2284 #endif 2285 VNET_DECLARE(uma_zone_t, pf_state_z); 2286 #define V_pf_state_z VNET(pf_state_z) 2287 VNET_DECLARE(uma_zone_t, pf_state_key_z); 2288 #define V_pf_state_key_z VNET(pf_state_key_z) 2289 VNET_DECLARE(uma_zone_t, pf_udp_mapping_z); 2290 #define V_pf_udp_mapping_z VNET(pf_udp_mapping_z) 2291 VNET_DECLARE(uma_zone_t, pf_state_scrub_z); 2292 #define V_pf_state_scrub_z VNET(pf_state_scrub_z) 2293 VNET_DECLARE(uma_zone_t, pf_anchor_z); 2294 #define V_pf_anchor_z VNET(pf_anchor_z) 2295 VNET_DECLARE(uma_zone_t, pf_eth_anchor_z); 2296 #define V_pf_eth_anchor_z VNET(pf_eth_anchor_z) 2297 2298 extern void pf_purge_thread(void *); 2299 extern void pf_unload_vnet_purge(void); 2300 extern void pf_intr(void *); 2301 extern void pf_purge_expired_src_nodes(void); 2302 2303 extern int pf_remove_state(struct pf_kstate *); 2304 extern int pf_state_insert(struct pfi_kkif *, 2305 struct pfi_kkif *, 2306 struct pf_state_key *, 2307 struct pf_state_key *, 2308 struct pf_kstate *); 2309 extern struct pf_kstate *pf_alloc_state(int); 2310 extern void pf_free_state(struct pf_kstate *); 2311 extern void pf_killstates(struct pf_kstate_kill *, 2312 unsigned int *); 2313 extern unsigned int pf_clear_states(const struct pf_kstate_kill *); 2314 2315 static __inline void 2316 pf_ref_state(struct pf_kstate *s) 2317 { 2318 2319 refcount_acquire(&s->refs); 2320 } 2321 2322 static __inline int 2323 pf_release_state(struct pf_kstate *s) 2324 { 2325 2326 if (refcount_release(&s->refs)) { 2327 pf_free_state(s); 2328 return (1); 2329 } else 2330 return (0); 2331 } 2332 2333 static __inline int 2334 pf_release_staten(struct pf_kstate *s, u_int n) 2335 { 2336 2337 if (refcount_releasen(&s->refs, n)) { 2338 pf_free_state(s); 2339 return (1); 2340 } else 2341 return (0); 2342 } 2343 2344 static __inline uint64_t 2345 pf_get_uptime(void) 2346 { 2347 struct timeval t; 2348 microuptime(&t); 2349 return ((t.tv_sec * 1000) + (t.tv_usec / 1000)); 2350 } 2351 2352 static __inline uint64_t 2353 pf_get_time(void) 2354 { 2355 struct timeval t; 2356 microtime(&t); 2357 return ((t.tv_sec * 1000) + (t.tv_usec / 1000)); 2358 } 2359 2360 extern struct pf_kstate *pf_find_state_byid(uint64_t, uint32_t); 2361 extern struct pf_kstate *pf_find_state_all( 2362 const struct pf_state_key_cmp *, 2363 u_int, int *); 2364 extern bool pf_find_state_all_exists( 2365 const struct pf_state_key_cmp *, 2366 u_int); 2367 extern struct pf_udp_mapping *pf_udp_mapping_find(struct pf_udp_endpoint_cmp 2368 *endpoint); 2369 extern struct pf_udp_mapping *pf_udp_mapping_create(sa_family_t af, 2370 struct pf_addr *src_addr, uint16_t src_port, 2371 struct pf_addr *nat_addr, uint16_t nat_port); 2372 extern int pf_udp_mapping_insert(struct pf_udp_mapping 2373 *mapping); 2374 extern void pf_udp_mapping_release(struct pf_udp_mapping 2375 *mapping); 2376 uint32_t pf_hashsrc(struct pf_addr *, sa_family_t); 2377 extern bool pf_src_node_exists(struct pf_ksrc_node **, 2378 struct pf_srchash *); 2379 extern struct pf_ksrc_node *pf_find_src_node(struct pf_addr *, 2380 struct pf_krule *, sa_family_t, 2381 struct pf_srchash **, pf_sn_types_t, bool); 2382 extern void pf_unlink_src_node(struct pf_ksrc_node *); 2383 extern u_int pf_free_src_nodes(struct pf_ksrc_node_list *); 2384 extern void pf_print_state(struct pf_kstate *); 2385 extern void pf_print_flags(uint16_t); 2386 extern int pf_addr_wrap_neq(struct pf_addr_wrap *, 2387 struct pf_addr_wrap *); 2388 extern u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t, 2389 u_int8_t); 2390 extern u_int16_t pf_proto_cksum_fixup(struct mbuf *, u_int16_t, 2391 u_int16_t, u_int16_t, u_int8_t); 2392 2393 VNET_DECLARE(struct ifnet *, sync_ifp); 2394 #define V_sync_ifp VNET(sync_ifp); 2395 VNET_DECLARE(struct pf_krule, pf_default_rule); 2396 #define V_pf_default_rule VNET(pf_default_rule) 2397 extern void pf_addrcpy(struct pf_addr *, const struct pf_addr *, 2398 sa_family_t); 2399 void pf_free_rule(struct pf_krule *); 2400 2401 int pf_test_eth(int, int, struct ifnet *, struct mbuf **, struct inpcb *); 2402 int pf_scan_sctp(struct pf_pdesc *); 2403 #if defined(INET) || defined(INET6) 2404 int pf_test(sa_family_t, int, int, struct ifnet *, struct mbuf **, struct inpcb *, 2405 struct pf_rule_actions *); 2406 #endif 2407 #ifdef INET 2408 int pf_normalize_ip(u_short *, struct pf_pdesc *); 2409 #endif /* INET */ 2410 2411 void pf_poolmask(struct pf_addr *, struct pf_addr*, 2412 struct pf_addr *, struct pf_addr *, sa_family_t); 2413 void pf_addr_inc(struct pf_addr *, sa_family_t); 2414 #ifdef INET6 2415 int pf_normalize_ip6(int, u_short *, struct pf_pdesc *); 2416 int pf_max_frag_size(struct mbuf *); 2417 int pf_refragment6(struct ifnet *, struct mbuf **, struct m_tag *, 2418 struct ifnet *, bool); 2419 #endif /* INET6 */ 2420 2421 int pf_multihome_scan_init(int, int, struct pf_pdesc *); 2422 int pf_multihome_scan_asconf(int, int, struct pf_pdesc *); 2423 2424 u_int32_t pf_new_isn(struct pf_kstate *); 2425 void *pf_pull_hdr(const struct mbuf *, int, void *, int, u_short *, u_short *, 2426 sa_family_t); 2427 void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t); 2428 void pf_change_proto_a(struct mbuf *, void *, u_int16_t *, u_int32_t, 2429 u_int8_t); 2430 void pf_change_tcp_a(struct mbuf *, void *, u_int16_t *, u_int32_t); 2431 int pf_patch_16(struct pf_pdesc *, void *, u_int16_t, bool); 2432 int pf_patch_32(struct pf_pdesc *, void *, u_int32_t, bool); 2433 void pf_send_deferred_syn(struct pf_kstate *); 2434 int pf_match_addr(u_int8_t, const struct pf_addr *, 2435 const struct pf_addr *, const struct pf_addr *, sa_family_t); 2436 int pf_match_addr_range(const struct pf_addr *, const struct pf_addr *, 2437 const struct pf_addr *, sa_family_t); 2438 int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t); 2439 2440 void pf_normalize_init(void); 2441 void pf_normalize_cleanup(void); 2442 int pf_normalize_tcp(struct pf_pdesc *); 2443 void pf_normalize_tcp_cleanup(struct pf_kstate *); 2444 int pf_normalize_tcp_init(struct pf_pdesc *, 2445 struct tcphdr *, struct pf_state_peer *); 2446 int pf_normalize_tcp_stateful(struct pf_pdesc *, 2447 u_short *, struct tcphdr *, struct pf_kstate *, 2448 struct pf_state_peer *, struct pf_state_peer *, int *); 2449 int pf_normalize_sctp_init(struct pf_pdesc *, 2450 struct pf_state_peer *, struct pf_state_peer *); 2451 int pf_normalize_sctp(struct pf_pdesc *); 2452 u_int32_t 2453 pf_state_expires(const struct pf_kstate *); 2454 void pf_purge_expired_fragments(void); 2455 void pf_purge_fragments(uint32_t); 2456 int pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kkif *, 2457 int); 2458 int pf_socket_lookup(struct pf_pdesc *); 2459 struct pf_state_key *pf_alloc_state_key(int); 2460 int pf_translate(struct pf_pdesc *, struct pf_addr *, u_int16_t, 2461 struct pf_addr *, u_int16_t, u_int16_t, int); 2462 int pf_translate_af(struct pf_pdesc *); 2463 bool pf_init_threshold(struct pf_kthreshold *, uint32_t, uint32_t); 2464 2465 void pfr_initialize(void); 2466 void pfr_cleanup(void); 2467 int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t); 2468 void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t, 2469 u_int64_t, int, int, int); 2470 int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, sa_family_t, 2471 pf_addr_filter_func_t, bool); 2472 void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *); 2473 struct pfr_ktable * 2474 pfr_attach_table(struct pf_kruleset *, char *); 2475 struct pfr_ktable * 2476 pfr_eth_attach_table(struct pf_keth_ruleset *, char *); 2477 void pfr_detach_table(struct pfr_ktable *); 2478 int pfr_clr_tables(struct pfr_table *, int *, int); 2479 int pfr_add_tables(struct pfr_table *, int, int *, int); 2480 int pfr_del_tables(struct pfr_table *, int, int *, int); 2481 int pfr_table_count(struct pfr_table *, int); 2482 int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int); 2483 int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int); 2484 int pfr_clr_tstats(struct pfr_table *, int, int *, int); 2485 int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int); 2486 int pfr_clr_addrs(struct pfr_table *, int *, int); 2487 int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *, time_t); 2488 int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 2489 int); 2490 int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 2491 int); 2492 int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 2493 int *, int *, int *, int, u_int32_t); 2494 int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int); 2495 int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int); 2496 int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *, 2497 int); 2498 int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 2499 int); 2500 int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int); 2501 int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int); 2502 int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int); 2503 int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *, 2504 int *, u_int32_t, int); 2505 struct pfr_ktable 2506 *pfr_ktable_select_active(struct pfr_ktable *); 2507 2508 MALLOC_DECLARE(PFI_MTYPE); 2509 VNET_DECLARE(struct pfi_kkif *, pfi_all); 2510 #define V_pfi_all VNET(pfi_all) 2511 2512 void pfi_initialize(void); 2513 void pfi_initialize_vnet(void); 2514 void pfi_cleanup(void); 2515 void pfi_cleanup_vnet(void); 2516 void pfi_kkif_ref(struct pfi_kkif *); 2517 void pfi_kkif_unref(struct pfi_kkif *); 2518 struct pfi_kkif *pfi_kkif_find(const char *); 2519 struct pfi_kkif *pfi_kkif_attach(struct pfi_kkif *, const char *); 2520 int pfi_kkif_match(struct pfi_kkif *, struct pfi_kkif *); 2521 void pfi_kkif_purge(void); 2522 int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *, 2523 sa_family_t); 2524 int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t); 2525 void pfi_dynaddr_remove(struct pfi_dynaddr *); 2526 void pfi_dynaddr_copyout(struct pf_addr_wrap *); 2527 void pfi_update_status(const char *, struct pf_status *); 2528 void pfi_get_ifaces(const char *, struct pfi_kif *, int *); 2529 int pfi_set_flags(const char *, int); 2530 int pfi_clear_flags(const char *, int); 2531 2532 int pf_match_tag(struct mbuf *, struct pf_krule *, int *, int); 2533 int pf_tag_packet(struct pf_pdesc *, int); 2534 int pf_addr_cmp(struct pf_addr *, struct pf_addr *, 2535 sa_family_t); 2536 2537 uint8_t* pf_find_tcpopt(u_int8_t *, u_int8_t *, size_t, 2538 u_int8_t, u_int8_t); 2539 u_int16_t pf_get_mss(struct pf_pdesc *); 2540 u_int8_t pf_get_wscale(struct pf_pdesc *); 2541 struct mbuf *pf_build_tcp(const struct pf_krule *, sa_family_t, 2542 const struct pf_addr *, const struct pf_addr *, 2543 u_int16_t, u_int16_t, u_int32_t, u_int32_t, 2544 u_int8_t, u_int16_t, u_int16_t, u_int8_t, int, 2545 u_int16_t, u_int16_t, u_int, int); 2546 void pf_send_tcp(const struct pf_krule *, sa_family_t, 2547 const struct pf_addr *, const struct pf_addr *, 2548 u_int16_t, u_int16_t, u_int32_t, u_int32_t, 2549 u_int8_t, u_int16_t, u_int16_t, u_int8_t, int, 2550 u_int16_t, u_int16_t, int); 2551 2552 void pf_syncookies_init(void); 2553 void pf_syncookies_cleanup(void); 2554 int pf_get_syncookies(struct pfioc_nv *); 2555 int pf_set_syncookies(struct pfioc_nv *); 2556 int pf_synflood_check(struct pf_pdesc *); 2557 void pf_syncookie_send(struct pf_pdesc *); 2558 bool pf_syncookie_check(struct pf_pdesc *); 2559 u_int8_t pf_syncookie_validate(struct pf_pdesc *); 2560 struct mbuf * pf_syncookie_recreate_syn(struct pf_pdesc *); 2561 2562 VNET_DECLARE(struct pf_kstatus, pf_status); 2563 #define V_pf_status VNET(pf_status) 2564 2565 struct pf_limit { 2566 uma_zone_t zone; 2567 u_int limit; 2568 }; 2569 VNET_DECLARE(struct pf_limit, pf_limits[PF_LIMIT_MAX]); 2570 #define V_pf_limits VNET(pf_limits) 2571 2572 #endif /* _KERNEL */ 2573 2574 #ifdef _KERNEL 2575 struct pf_nl_pooladdr { 2576 u_int32_t action; 2577 u_int32_t ticket; 2578 u_int32_t nr; 2579 u_int32_t r_num; 2580 u_int8_t r_action; 2581 u_int8_t r_last; 2582 u_int8_t af; 2583 char anchor[MAXPATHLEN]; 2584 struct pf_pooladdr addr; 2585 /* Above this is identical to pfioc_pooladdr */ 2586 int which; 2587 }; 2588 2589 VNET_DECLARE(struct pf_kanchor_global, pf_anchors); 2590 #define V_pf_anchors VNET(pf_anchors) 2591 VNET_DECLARE(struct pf_kanchor, pf_main_anchor); 2592 #define V_pf_main_anchor VNET(pf_main_anchor) 2593 VNET_DECLARE(struct pf_keth_anchor_global, pf_keth_anchors); 2594 #define V_pf_keth_anchors VNET(pf_keth_anchors) 2595 #define pf_main_ruleset V_pf_main_anchor.ruleset 2596 2597 VNET_DECLARE(struct pf_keth_anchor, pf_main_keth_anchor); 2598 #define V_pf_main_keth_anchor VNET(pf_main_keth_anchor) 2599 VNET_DECLARE(struct pf_keth_ruleset*, pf_keth); 2600 #define V_pf_keth VNET(pf_keth) 2601 2602 void pf_init_kruleset(struct pf_kruleset *); 2603 void pf_init_keth(struct pf_keth_ruleset *); 2604 int pf_kanchor_setup(struct pf_krule *, 2605 const struct pf_kruleset *, const char *); 2606 int pf_kanchor_copyout(const struct pf_kruleset *, 2607 const struct pf_krule *, char *, size_t); 2608 int pf_kanchor_nvcopyout(const struct pf_kruleset *, 2609 const struct pf_krule *, nvlist_t *); 2610 void pf_remove_kanchor(struct pf_krule *); 2611 void pf_remove_if_empty_kruleset(struct pf_kruleset *); 2612 struct pf_kruleset *pf_find_kruleset(const char *); 2613 struct pf_kruleset *pf_get_leaf_kruleset(char *, char **); 2614 struct pf_kruleset *pf_find_or_create_kruleset(const char *); 2615 void pf_rs_initialize(void); 2616 2617 2618 struct pf_krule *pf_krule_alloc(void); 2619 2620 void pf_remove_if_empty_keth_ruleset( 2621 struct pf_keth_ruleset *); 2622 struct pf_keth_ruleset *pf_find_keth_ruleset(const char *); 2623 struct pf_keth_anchor *pf_find_keth_anchor(const char *); 2624 int pf_keth_anchor_setup(struct pf_keth_rule *, 2625 const struct pf_keth_ruleset *, const char *); 2626 int pf_keth_anchor_nvcopyout( 2627 const struct pf_keth_ruleset *, 2628 const struct pf_keth_rule *, nvlist_t *); 2629 struct pf_keth_ruleset *pf_find_or_create_keth_ruleset(const char *); 2630 void pf_keth_anchor_remove(struct pf_keth_rule *); 2631 2632 int pf_ioctl_getrules(struct pfioc_rule *); 2633 int pf_ioctl_addrule(struct pf_krule *, uint32_t, 2634 uint32_t, const char *, const char *, uid_t uid, 2635 pid_t); 2636 void pf_ioctl_clear_status(void); 2637 int pf_ioctl_get_timeout(int, int *); 2638 int pf_ioctl_set_timeout(int, int, int *); 2639 int pf_ioctl_get_limit(int, unsigned int *); 2640 int pf_ioctl_set_limit(int, unsigned int, unsigned int *); 2641 int pf_ioctl_begin_addrs(uint32_t *); 2642 int pf_ioctl_add_addr(struct pf_nl_pooladdr *); 2643 int pf_ioctl_get_addrs(struct pf_nl_pooladdr *); 2644 int pf_ioctl_get_addr(struct pf_nl_pooladdr *); 2645 int pf_ioctl_get_rulesets(struct pfioc_ruleset *); 2646 int pf_ioctl_get_ruleset(struct pfioc_ruleset *); 2647 int pf_ioctl_natlook(struct pfioc_natlook *); 2648 2649 void pf_krule_free(struct pf_krule *); 2650 void pf_krule_clear_counters(struct pf_krule *); 2651 void pf_addr_copyout(struct pf_addr_wrap *); 2652 #endif 2653 2654 /* The fingerprint functions can be linked into userland programs (tcpdump) */ 2655 int pf_osfp_add(struct pf_osfp_ioctl *); 2656 #ifdef _KERNEL 2657 struct pf_osfp_enlist * 2658 pf_osfp_fingerprint(struct pf_pdesc *, const struct tcphdr *); 2659 #endif /* _KERNEL */ 2660 void pf_osfp_flush(void); 2661 int pf_osfp_get(struct pf_osfp_ioctl *); 2662 int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t); 2663 2664 #ifdef _KERNEL 2665 void pf_print_host(struct pf_addr *, u_int16_t, sa_family_t); 2666 2667 enum pf_test_status pf_step_into_anchor(struct pf_test_ctx *, struct pf_krule *); 2668 enum pf_test_status pf_match_rule(struct pf_test_ctx *, struct pf_kruleset *); 2669 void pf_step_into_keth_anchor(struct pf_keth_anchor_stackframe *, 2670 int *, struct pf_keth_ruleset **, 2671 struct pf_keth_rule **, struct pf_keth_rule **, 2672 int *); 2673 int pf_step_out_of_keth_anchor(struct pf_keth_anchor_stackframe *, 2674 int *, struct pf_keth_ruleset **, 2675 struct pf_keth_rule **, struct pf_keth_rule **, 2676 int *); 2677 2678 u_short pf_map_addr(sa_family_t, struct pf_krule *, 2679 struct pf_addr *, struct pf_addr *, 2680 struct pfi_kkif **nkif, sa_family_t *, 2681 struct pf_addr *, struct pf_kpool *); 2682 u_short pf_map_addr_sn(u_int8_t, struct pf_krule *, 2683 struct pf_addr *, struct pf_addr *, 2684 sa_family_t *, struct pfi_kkif **, 2685 struct pf_addr *, struct pf_kpool *, 2686 pf_sn_types_t); 2687 int pf_get_transaddr_af(struct pf_krule *, 2688 struct pf_pdesc *); 2689 u_short pf_get_translation(struct pf_test_ctx *); 2690 u_short pf_get_transaddr(struct pf_test_ctx *, 2691 struct pf_krule *, 2692 u_int8_t, struct pf_kpool *); 2693 int pf_translate_compat(struct pf_test_ctx *); 2694 2695 int pf_state_key_setup(struct pf_pdesc *, 2696 u_int16_t, u_int16_t, 2697 struct pf_state_key **sk, struct pf_state_key **nk); 2698 struct pf_state_key *pf_state_key_clone(const struct pf_state_key *); 2699 void pf_rule_to_actions(struct pf_krule *, 2700 struct pf_rule_actions *); 2701 int pf_normalize_mss(struct pf_pdesc *pd); 2702 #if defined(INET) || defined(INET6) 2703 void pf_scrub(struct pf_pdesc *); 2704 #endif 2705 2706 struct pfi_kkif *pf_kkif_create(int); 2707 void pf_kkif_free(struct pfi_kkif *); 2708 void pf_kkif_zero(struct pfi_kkif *); 2709 2710 2711 /* NAT64 functions. */ 2712 int inet_nat64(int, const void *, void *, const void *, u_int8_t); 2713 int inet_nat64_inet(const void *, void *, const void *, u_int8_t); 2714 int inet_nat64_inet6(const void *, void *, const void *, u_int8_t); 2715 2716 int inet_nat46(int, const void *, void *, const void *, u_int8_t); 2717 int inet_nat46_inet(const void *, void *, const void *, u_int8_t); 2718 int inet_nat46_inet6(const void *, void *, const void *, u_int8_t); 2719 2720 #endif /* _KERNEL */ 2721 2722 #endif /* _NET_PFVAR_H_ */ 2723