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 #if defined(__arm__) 74 #define PF_WANT_32_TO_64_COUNTER 75 #endif 76 77 /* 78 * A hybrid of 32-bit and 64-bit counters which can be used on platforms where 79 * counter(9) is very expensive. 80 * 81 * As 32-bit counters are expected to overflow, a periodic job sums them up to 82 * a saved 64-bit state. Fetching the value still walks all CPUs to get the most 83 * current snapshot. 84 */ 85 #ifdef PF_WANT_32_TO_64_COUNTER 86 struct pf_counter_u64_pcpu { 87 u_int32_t current; 88 u_int32_t snapshot; 89 }; 90 91 struct pf_counter_u64 { 92 struct pf_counter_u64_pcpu *pfcu64_pcpu; 93 u_int64_t pfcu64_value; 94 seqc_t pfcu64_seqc; 95 }; 96 97 static inline int 98 pf_counter_u64_init(struct pf_counter_u64 *pfcu64, int flags) 99 { 100 101 pfcu64->pfcu64_value = 0; 102 pfcu64->pfcu64_seqc = 0; 103 pfcu64->pfcu64_pcpu = uma_zalloc_pcpu(pcpu_zone_8, flags | M_ZERO); 104 if (__predict_false(pfcu64->pfcu64_pcpu == NULL)) 105 return (ENOMEM); 106 return (0); 107 } 108 109 static inline void 110 pf_counter_u64_deinit(struct pf_counter_u64 *pfcu64) 111 { 112 113 uma_zfree_pcpu(pcpu_zone_8, pfcu64->pfcu64_pcpu); 114 } 115 116 static inline void 117 pf_counter_u64_critical_enter(void) 118 { 119 120 critical_enter(); 121 } 122 123 static inline void 124 pf_counter_u64_critical_exit(void) 125 { 126 127 critical_exit(); 128 } 129 130 static inline void 131 pf_counter_u64_rollup_protected(struct pf_counter_u64 *pfcu64, uint64_t n) 132 { 133 134 MPASS(curthread->td_critnest > 0); 135 pfcu64->pfcu64_value += n; 136 } 137 138 static inline void 139 pf_counter_u64_add_protected(struct pf_counter_u64 *pfcu64, uint32_t n) 140 { 141 struct pf_counter_u64_pcpu *pcpu; 142 u_int32_t val; 143 144 MPASS(curthread->td_critnest > 0); 145 pcpu = zpcpu_get(pfcu64->pfcu64_pcpu); 146 val = atomic_load_int(&pcpu->current); 147 atomic_store_int(&pcpu->current, val + n); 148 } 149 150 static inline void 151 pf_counter_u64_add(struct pf_counter_u64 *pfcu64, uint32_t n) 152 { 153 154 critical_enter(); 155 pf_counter_u64_add_protected(pfcu64, n); 156 critical_exit(); 157 } 158 159 static inline u_int64_t 160 pf_counter_u64_periodic(struct pf_counter_u64 *pfcu64) 161 { 162 struct pf_counter_u64_pcpu *pcpu; 163 u_int64_t sum; 164 u_int32_t val; 165 int cpu; 166 167 MPASS(curthread->td_critnest > 0); 168 seqc_write_begin(&pfcu64->pfcu64_seqc); 169 sum = pfcu64->pfcu64_value; 170 CPU_FOREACH(cpu) { 171 pcpu = zpcpu_get_cpu(pfcu64->pfcu64_pcpu, cpu); 172 val = atomic_load_int(&pcpu->current); 173 sum += (uint32_t)(val - pcpu->snapshot); 174 pcpu->snapshot = val; 175 } 176 pfcu64->pfcu64_value = sum; 177 seqc_write_end(&pfcu64->pfcu64_seqc); 178 return (sum); 179 } 180 181 static inline u_int64_t 182 pf_counter_u64_fetch(const struct pf_counter_u64 *pfcu64) 183 { 184 struct pf_counter_u64_pcpu *pcpu; 185 u_int64_t sum; 186 seqc_t seqc; 187 int cpu; 188 189 for (;;) { 190 seqc = seqc_read(&pfcu64->pfcu64_seqc); 191 sum = 0; 192 CPU_FOREACH(cpu) { 193 pcpu = zpcpu_get_cpu(pfcu64->pfcu64_pcpu, cpu); 194 sum += (uint32_t)(atomic_load_int(&pcpu->current) -pcpu->snapshot); 195 } 196 sum += pfcu64->pfcu64_value; 197 if (seqc_consistent(&pfcu64->pfcu64_seqc, seqc)) 198 break; 199 } 200 return (sum); 201 } 202 203 static inline void 204 pf_counter_u64_zero_protected(struct pf_counter_u64 *pfcu64) 205 { 206 struct pf_counter_u64_pcpu *pcpu; 207 int cpu; 208 209 MPASS(curthread->td_critnest > 0); 210 seqc_write_begin(&pfcu64->pfcu64_seqc); 211 CPU_FOREACH(cpu) { 212 pcpu = zpcpu_get_cpu(pfcu64->pfcu64_pcpu, cpu); 213 pcpu->snapshot = atomic_load_int(&pcpu->current); 214 } 215 pfcu64->pfcu64_value = 0; 216 seqc_write_end(&pfcu64->pfcu64_seqc); 217 } 218 219 static inline void 220 pf_counter_u64_zero(struct pf_counter_u64 *pfcu64) 221 { 222 223 critical_enter(); 224 pf_counter_u64_zero_protected(pfcu64); 225 critical_exit(); 226 } 227 #else 228 struct pf_counter_u64 { 229 counter_u64_t counter; 230 }; 231 232 static inline int 233 pf_counter_u64_init(struct pf_counter_u64 *pfcu64, int flags) 234 { 235 236 pfcu64->counter = counter_u64_alloc(flags); 237 if (__predict_false(pfcu64->counter == NULL)) 238 return (ENOMEM); 239 return (0); 240 } 241 242 static inline void 243 pf_counter_u64_deinit(struct pf_counter_u64 *pfcu64) 244 { 245 246 counter_u64_free(pfcu64->counter); 247 } 248 249 static inline void 250 pf_counter_u64_critical_enter(void) 251 { 252 253 } 254 255 static inline void 256 pf_counter_u64_critical_exit(void) 257 { 258 259 } 260 261 static inline void 262 pf_counter_u64_rollup_protected(struct pf_counter_u64 *pfcu64, uint64_t n) 263 { 264 265 counter_u64_add(pfcu64->counter, n); 266 } 267 268 static inline void 269 pf_counter_u64_add_protected(struct pf_counter_u64 *pfcu64, uint32_t n) 270 { 271 272 counter_u64_add(pfcu64->counter, n); 273 } 274 275 static inline void 276 pf_counter_u64_add(struct pf_counter_u64 *pfcu64, uint32_t n) 277 { 278 279 pf_counter_u64_add_protected(pfcu64, n); 280 } 281 282 static inline u_int64_t 283 pf_counter_u64_fetch(const struct pf_counter_u64 *pfcu64) 284 { 285 286 return (counter_u64_fetch(pfcu64->counter)); 287 } 288 289 static inline void 290 pf_counter_u64_zero_protected(struct pf_counter_u64 *pfcu64) 291 { 292 293 counter_u64_zero(pfcu64->counter); 294 } 295 296 static inline void 297 pf_counter_u64_zero(struct pf_counter_u64 *pfcu64) 298 { 299 300 pf_counter_u64_zero_protected(pfcu64); 301 } 302 #endif 303 304 #define pf_get_timestamp(prule)({ \ 305 uint32_t _ts = 0; \ 306 uint32_t __ts; \ 307 int cpu; \ 308 CPU_FOREACH(cpu) { \ 309 __ts = *zpcpu_get_cpu(prule->timestamp, cpu); \ 310 if (__ts > _ts) \ 311 _ts = __ts; \ 312 } \ 313 _ts; \ 314 }) 315 316 #define pf_update_timestamp(prule) \ 317 do { \ 318 critical_enter(); \ 319 *zpcpu_get((prule)->timestamp) = time_second; \ 320 critical_exit(); \ 321 } while (0) 322 323 #define pf_timestamp_pcpu_zone (sizeof(time_t) == 4 ? pcpu_zone_4 : pcpu_zone_8) 324 _Static_assert(sizeof(time_t) == 4 || sizeof(time_t) == 8, "unexpected time_t size"); 325 326 SYSCTL_DECL(_net_pf); 327 MALLOC_DECLARE(M_PFHASH); 328 MALLOC_DECLARE(M_PF_RULE_ITEM); 329 330 SDT_PROVIDER_DECLARE(pf); 331 332 struct pfi_dynaddr { 333 TAILQ_ENTRY(pfi_dynaddr) entry; 334 struct pf_addr pfid_addr4; 335 struct pf_addr pfid_mask4; 336 struct pf_addr pfid_addr6; 337 struct pf_addr pfid_mask6; 338 struct pfr_ktable *pfid_kt; 339 struct pfi_kkif *pfid_kif; 340 int pfid_net; /* mask or 128 */ 341 int pfid_acnt4; /* address count IPv4 */ 342 int pfid_acnt6; /* address count IPv6 */ 343 sa_family_t pfid_af; /* rule af */ 344 u_int8_t pfid_iflags; /* PFI_AFLAG_* */ 345 }; 346 347 /* 348 * Address manipulation macros 349 */ 350 #define HTONL(x) (x) = htonl((__uint32_t)(x)) 351 #define HTONS(x) (x) = htons((__uint16_t)(x)) 352 #define NTOHL(x) (x) = ntohl((__uint32_t)(x)) 353 #define NTOHS(x) (x) = ntohs((__uint16_t)(x)) 354 355 #define PF_NAME "pf" 356 357 #define PF_HASHROW_ASSERT(h) mtx_assert(&(h)->lock, MA_OWNED) 358 #define PF_HASHROW_LOCK(h) mtx_lock(&(h)->lock) 359 #define PF_HASHROW_UNLOCK(h) mtx_unlock(&(h)->lock) 360 361 #ifdef INVARIANTS 362 #define PF_STATE_LOCK(s) \ 363 do { \ 364 struct pf_kstate *_s = (s); \ 365 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(_s)]; \ 366 MPASS(_s->lock == &_ih->lock); \ 367 mtx_lock(_s->lock); \ 368 } while (0) 369 #define PF_STATE_UNLOCK(s) \ 370 do { \ 371 struct pf_kstate *_s = (s); \ 372 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(_s)]; \ 373 MPASS(_s->lock == &_ih->lock); \ 374 mtx_unlock(_s->lock); \ 375 } while (0) 376 #else 377 #define PF_STATE_LOCK(s) mtx_lock((s)->lock) 378 #define PF_STATE_UNLOCK(s) mtx_unlock((s)->lock) 379 #endif 380 381 #ifdef INVARIANTS 382 #define PF_STATE_LOCK_ASSERT(s) \ 383 do { \ 384 struct pf_kstate *_s = (s); \ 385 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(_s)]; \ 386 MPASS(_s->lock == &_ih->lock); \ 387 PF_HASHROW_ASSERT(_ih); \ 388 } while (0) 389 #else /* !INVARIANTS */ 390 #define PF_STATE_LOCK_ASSERT(s) do {} while (0) 391 #endif /* INVARIANTS */ 392 393 #ifdef INVARIANTS 394 #define PF_SRC_NODE_LOCK(sn) \ 395 do { \ 396 struct pf_ksrc_node *_sn = (sn); \ 397 struct pf_srchash *_sh = &V_pf_srchash[ \ 398 pf_hashsrc(&_sn->addr, _sn->af)]; \ 399 MPASS(_sn->lock == &_sh->lock); \ 400 mtx_lock(_sn->lock); \ 401 } while (0) 402 #define PF_SRC_NODE_UNLOCK(sn) \ 403 do { \ 404 struct pf_ksrc_node *_sn = (sn); \ 405 struct pf_srchash *_sh = &V_pf_srchash[ \ 406 pf_hashsrc(&_sn->addr, _sn->af)]; \ 407 MPASS(_sn->lock == &_sh->lock); \ 408 mtx_unlock(_sn->lock); \ 409 } while (0) 410 #else 411 #define PF_SRC_NODE_LOCK(sn) mtx_lock((sn)->lock) 412 #define PF_SRC_NODE_UNLOCK(sn) mtx_unlock((sn)->lock) 413 #endif 414 415 #ifdef INVARIANTS 416 #define PF_SRC_NODE_LOCK_ASSERT(sn) \ 417 do { \ 418 struct pf_ksrc_node *_sn = (sn); \ 419 struct pf_srchash *_sh = &V_pf_srchash[ \ 420 pf_hashsrc(&_sn->addr, _sn->af)]; \ 421 MPASS(_sn->lock == &_sh->lock); \ 422 PF_HASHROW_ASSERT(_sh); \ 423 } while (0) 424 #else /* !INVARIANTS */ 425 #define PF_SRC_NODE_LOCK_ASSERT(sn) do {} while (0) 426 #endif /* INVARIANTS */ 427 428 extern struct mtx_padalign pf_unlnkdrules_mtx; 429 #define PF_UNLNKDRULES_LOCK() mtx_lock(&pf_unlnkdrules_mtx) 430 #define PF_UNLNKDRULES_UNLOCK() mtx_unlock(&pf_unlnkdrules_mtx) 431 #define PF_UNLNKDRULES_ASSERT() mtx_assert(&pf_unlnkdrules_mtx, MA_OWNED) 432 433 extern struct sx pf_config_lock; 434 #define PF_CONFIG_LOCK() sx_xlock(&pf_config_lock) 435 #define PF_CONFIG_UNLOCK() sx_xunlock(&pf_config_lock) 436 #define PF_CONFIG_ASSERT() sx_assert(&pf_config_lock, SA_XLOCKED) 437 438 VNET_DECLARE(struct rmlock, pf_rules_lock); 439 #define V_pf_rules_lock VNET(pf_rules_lock) 440 441 #define PF_RULES_RLOCK_TRACKER struct rm_priotracker _pf_rules_tracker 442 #define PF_RULES_RLOCK() rm_rlock(&V_pf_rules_lock, &_pf_rules_tracker) 443 #define PF_RULES_RUNLOCK() rm_runlock(&V_pf_rules_lock, &_pf_rules_tracker) 444 #define PF_RULES_WLOCK() rm_wlock(&V_pf_rules_lock) 445 #define PF_RULES_WUNLOCK() rm_wunlock(&V_pf_rules_lock) 446 #define PF_RULES_WOWNED() rm_wowned(&V_pf_rules_lock) 447 #define PF_RULES_ASSERT() rm_assert(&V_pf_rules_lock, RA_LOCKED) 448 #define PF_RULES_RASSERT() rm_assert(&V_pf_rules_lock, RA_RLOCKED) 449 #define PF_RULES_WASSERT() rm_assert(&V_pf_rules_lock, RA_WLOCKED) 450 451 extern struct mtx_padalign pf_table_stats_lock; 452 #define PF_TABLE_STATS_LOCK() mtx_lock(&pf_table_stats_lock) 453 #define PF_TABLE_STATS_UNLOCK() mtx_unlock(&pf_table_stats_lock) 454 #define PF_TABLE_STATS_OWNED() mtx_owned(&pf_table_stats_lock) 455 #define PF_TABLE_STATS_ASSERT() mtx_assert(&pf_table_stats_lock, MA_OWNED) 456 457 extern struct sx pf_end_lock; 458 459 #define PF_MODVER 1 460 #define PFLOG_MODVER 1 461 #define PFSYNC_MODVER 1 462 463 #define PFLOG_MINVER 1 464 #define PFLOG_PREFVER PFLOG_MODVER 465 #define PFLOG_MAXVER 1 466 #define PFSYNC_MINVER 1 467 #define PFSYNC_PREFVER PFSYNC_MODVER 468 #define PFSYNC_MAXVER 1 469 470 #ifdef INET 471 #ifndef INET6 472 #define PF_INET_ONLY 473 #endif /* ! INET6 */ 474 #endif /* INET */ 475 476 #ifdef INET6 477 #ifndef INET 478 #define PF_INET6_ONLY 479 #endif /* ! INET */ 480 #endif /* INET6 */ 481 482 #ifdef INET 483 #ifdef INET6 484 #define PF_INET_INET6 485 #endif /* INET6 */ 486 #endif /* INET */ 487 488 #else 489 490 #define PF_INET_INET6 491 492 #endif /* _KERNEL */ 493 494 /* Both IPv4 and IPv6 */ 495 #ifdef PF_INET_INET6 496 497 #define PF_AEQ(a, b, c) \ 498 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \ 499 (c == AF_INET6 && (a)->addr32[3] == (b)->addr32[3] && \ 500 (a)->addr32[2] == (b)->addr32[2] && \ 501 (a)->addr32[1] == (b)->addr32[1] && \ 502 (a)->addr32[0] == (b)->addr32[0])) \ 503 504 #define PF_ANEQ(a, b, c) \ 505 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \ 506 (c == AF_INET6 && ((a)->addr32[0] != (b)->addr32[0] || \ 507 (a)->addr32[1] != (b)->addr32[1] || \ 508 (a)->addr32[2] != (b)->addr32[2] || \ 509 (a)->addr32[3] != (b)->addr32[3]))) \ 510 511 #define PF_AZERO(a, c) \ 512 ((c == AF_INET && !(a)->addr32[0]) || \ 513 (c == AF_INET6 && !(a)->addr32[0] && !(a)->addr32[1] && \ 514 !(a)->addr32[2] && !(a)->addr32[3] )) \ 515 516 #define PF_MATCHA(n, a, m, b, f) \ 517 pf_match_addr(n, a, m, b, f) 518 519 #define PF_ACPY(a, b, f) \ 520 pf_addrcpy(a, b, f) 521 522 #define PF_AINC(a, f) \ 523 pf_addr_inc(a, f) 524 525 #define PF_POOLMASK(a, b, c, d, f) \ 526 pf_poolmask(a, b, c, d, f) 527 528 #else 529 530 /* Just IPv6 */ 531 532 #ifdef PF_INET6_ONLY 533 534 #define PF_AEQ(a, b, c) \ 535 ((a)->addr32[3] == (b)->addr32[3] && \ 536 (a)->addr32[2] == (b)->addr32[2] && \ 537 (a)->addr32[1] == (b)->addr32[1] && \ 538 (a)->addr32[0] == (b)->addr32[0]) \ 539 540 #define PF_ANEQ(a, b, c) \ 541 ((a)->addr32[3] != (b)->addr32[3] || \ 542 (a)->addr32[2] != (b)->addr32[2] || \ 543 (a)->addr32[1] != (b)->addr32[1] || \ 544 (a)->addr32[0] != (b)->addr32[0]) \ 545 546 #define PF_AZERO(a, c) \ 547 (!(a)->addr32[0] && \ 548 !(a)->addr32[1] && \ 549 !(a)->addr32[2] && \ 550 !(a)->addr32[3] ) \ 551 552 #define PF_MATCHA(n, a, m, b, f) \ 553 pf_match_addr(n, a, m, b, f) 554 555 #define PF_ACPY(a, b, f) \ 556 pf_addrcpy(a, b, f) 557 558 #define PF_AINC(a, f) \ 559 pf_addr_inc(a, f) 560 561 #define PF_POOLMASK(a, b, c, d, f) \ 562 pf_poolmask(a, b, c, d, f) 563 564 #else 565 566 /* Just IPv4 */ 567 #ifdef PF_INET_ONLY 568 569 #define PF_AEQ(a, b, c) \ 570 ((a)->addr32[0] == (b)->addr32[0]) 571 572 #define PF_ANEQ(a, b, c) \ 573 ((a)->addr32[0] != (b)->addr32[0]) 574 575 #define PF_AZERO(a, c) \ 576 (!(a)->addr32[0]) 577 578 #define PF_MATCHA(n, a, m, b, f) \ 579 pf_match_addr(n, a, m, b, f) 580 581 #define PF_ACPY(a, b, f) \ 582 (a)->v4.s_addr = (b)->v4.s_addr 583 584 #define PF_AINC(a, f) \ 585 do { \ 586 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \ 587 } while (0) 588 589 #define PF_POOLMASK(a, b, c, d, f) \ 590 do { \ 591 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \ 592 (((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \ 593 } while (0) 594 595 #endif /* PF_INET_ONLY */ 596 #endif /* PF_INET6_ONLY */ 597 #endif /* PF_INET_INET6 */ 598 599 /* 600 * XXX callers not FIB-aware in our version of pf yet. 601 * OpenBSD fixed it later it seems, 2010/05/07 13:33:16 claudio. 602 */ 603 #define PF_MISMATCHAW(aw, x, af, neg, ifp, rtid) \ 604 ( \ 605 (((aw)->type == PF_ADDR_NOROUTE && \ 606 pf_routable((x), (af), NULL, (rtid))) || \ 607 (((aw)->type == PF_ADDR_URPFFAILED && (ifp) != NULL && \ 608 pf_routable((x), (af), (ifp), (rtid))) || \ 609 ((aw)->type == PF_ADDR_TABLE && \ 610 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \ 611 ((aw)->type == PF_ADDR_DYNIFTL && \ 612 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \ 613 ((aw)->type == PF_ADDR_RANGE && \ 614 !pf_match_addr_range(&(aw)->v.a.addr, \ 615 &(aw)->v.a.mask, (x), (af))) || \ 616 ((aw)->type == PF_ADDR_ADDRMASK && \ 617 !PF_AZERO(&(aw)->v.a.mask, (af)) && \ 618 !PF_MATCHA(0, &(aw)->v.a.addr, \ 619 &(aw)->v.a.mask, (x), (af))))) != \ 620 (neg) \ 621 ) 622 623 #define PF_ALGNMNT(off) (((off) % 2) == 0) 624 625 #ifdef _KERNEL 626 627 struct pf_kpooladdr { 628 struct pf_addr_wrap addr; 629 TAILQ_ENTRY(pf_kpooladdr) entries; 630 char ifname[IFNAMSIZ]; 631 struct pfi_kkif *kif; 632 }; 633 634 TAILQ_HEAD(pf_kpalist, pf_kpooladdr); 635 636 struct pf_kpool { 637 struct mtx mtx; 638 struct pf_kpalist list; 639 struct pf_kpooladdr *cur; 640 struct pf_poolhashkey key; 641 struct pf_addr counter; 642 struct pf_mape_portset mape; 643 int tblidx; 644 u_int16_t proxy_port[2]; 645 u_int8_t opts; 646 }; 647 648 struct pf_rule_actions { 649 int32_t rtableid; 650 uint16_t qid; 651 uint16_t pqid; 652 uint16_t max_mss; 653 uint8_t log; 654 uint8_t set_tos; 655 uint8_t min_ttl; 656 uint16_t dnpipe; 657 uint16_t dnrpipe; /* Reverse direction pipe */ 658 uint32_t flags; 659 uint8_t set_prio[2]; 660 }; 661 662 union pf_keth_rule_ptr { 663 struct pf_keth_rule *ptr; 664 uint32_t nr; 665 }; 666 667 struct pf_keth_rule_addr { 668 uint8_t addr[ETHER_ADDR_LEN]; 669 uint8_t mask[ETHER_ADDR_LEN]; 670 bool neg; 671 uint8_t isset; 672 }; 673 674 struct pf_keth_anchor; 675 676 TAILQ_HEAD(pf_keth_ruleq, pf_keth_rule); 677 678 struct pf_keth_ruleset { 679 struct pf_keth_ruleq rules[2]; 680 struct pf_keth_rules { 681 struct pf_keth_ruleq *rules; 682 int open; 683 uint32_t ticket; 684 } active, inactive; 685 struct epoch_context epoch_ctx; 686 struct vnet *vnet; 687 struct pf_keth_anchor *anchor; 688 }; 689 690 RB_HEAD(pf_keth_anchor_global, pf_keth_anchor); 691 RB_HEAD(pf_keth_anchor_node, pf_keth_anchor); 692 struct pf_keth_anchor { 693 RB_ENTRY(pf_keth_anchor) entry_node; 694 RB_ENTRY(pf_keth_anchor) entry_global; 695 struct pf_keth_anchor *parent; 696 struct pf_keth_anchor_node children; 697 char name[PF_ANCHOR_NAME_SIZE]; 698 char path[MAXPATHLEN]; 699 struct pf_keth_ruleset ruleset; 700 int refcnt; /* anchor rules */ 701 uint8_t anchor_relative; 702 uint8_t anchor_wildcard; 703 }; 704 RB_PROTOTYPE(pf_keth_anchor_node, pf_keth_anchor, entry_node, 705 pf_keth_anchor_compare); 706 RB_PROTOTYPE(pf_keth_anchor_global, pf_keth_anchor, entry_global, 707 pf_keth_anchor_compare); 708 709 struct pf_keth_rule { 710 #define PFE_SKIP_IFP 0 711 #define PFE_SKIP_DIR 1 712 #define PFE_SKIP_PROTO 2 713 #define PFE_SKIP_SRC_ADDR 3 714 #define PFE_SKIP_DST_ADDR 4 715 #define PFE_SKIP_SRC_IP_ADDR 5 716 #define PFE_SKIP_DST_IP_ADDR 6 717 #define PFE_SKIP_COUNT 7 718 union pf_keth_rule_ptr skip[PFE_SKIP_COUNT]; 719 720 TAILQ_ENTRY(pf_keth_rule) entries; 721 722 struct pf_keth_anchor *anchor; 723 u_int8_t anchor_relative; 724 u_int8_t anchor_wildcard; 725 726 uint32_t nr; 727 728 bool quick; 729 730 /* Filter */ 731 char ifname[IFNAMSIZ]; 732 struct pfi_kkif *kif; 733 bool ifnot; 734 uint8_t direction; 735 uint16_t proto; 736 struct pf_keth_rule_addr src, dst; 737 struct pf_rule_addr ipsrc, ipdst; 738 char match_tagname[PF_TAG_NAME_SIZE]; 739 uint16_t match_tag; 740 bool match_tag_not; 741 742 743 /* Stats */ 744 counter_u64_t evaluations; 745 counter_u64_t packets[2]; 746 counter_u64_t bytes[2]; 747 time_t *timestamp; 748 749 /* Action */ 750 char qname[PF_QNAME_SIZE]; 751 int qid; 752 char tagname[PF_TAG_NAME_SIZE]; 753 uint16_t tag; 754 char bridge_to_name[IFNAMSIZ]; 755 struct pfi_kkif *bridge_to; 756 uint8_t action; 757 uint16_t dnpipe; 758 uint32_t dnflags; 759 760 char label[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE]; 761 uint32_t ridentifier; 762 }; 763 764 RB_HEAD(pf_krule_global, pf_krule); 765 RB_PROTOTYPE(pf_krule_global, pf_krule, entry_global, pf_krule_compare); 766 767 struct pf_krule { 768 struct pf_rule_addr src; 769 struct pf_rule_addr dst; 770 struct pf_krule *skip[PF_SKIP_COUNT]; 771 char label[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE]; 772 uint32_t ridentifier; 773 char ifname[IFNAMSIZ]; 774 char rcv_ifname[IFNAMSIZ]; 775 char qname[PF_QNAME_SIZE]; 776 char pqname[PF_QNAME_SIZE]; 777 char tagname[PF_TAG_NAME_SIZE]; 778 char match_tagname[PF_TAG_NAME_SIZE]; 779 780 char overload_tblname[PF_TABLE_NAME_SIZE]; 781 782 TAILQ_ENTRY(pf_krule) entries; 783 struct pf_kpool rpool; 784 785 struct pf_counter_u64 evaluations; 786 struct pf_counter_u64 packets[2]; 787 struct pf_counter_u64 bytes[2]; 788 time_t *timestamp; 789 790 struct pfi_kkif *kif; 791 struct pfi_kkif *rcv_kif; 792 struct pf_kanchor *anchor; 793 struct pfr_ktable *overload_tbl; 794 795 pf_osfp_t os_fingerprint; 796 797 int32_t rtableid; 798 u_int32_t timeout[PFTM_MAX]; 799 u_int32_t max_states; 800 u_int32_t max_src_nodes; 801 u_int32_t max_src_states; 802 u_int32_t max_src_conn; 803 struct { 804 u_int32_t limit; 805 u_int32_t seconds; 806 } max_src_conn_rate; 807 u_int16_t qid; 808 u_int16_t pqid; 809 u_int16_t dnpipe; 810 u_int16_t dnrpipe; 811 u_int32_t free_flags; 812 u_int32_t nr; 813 u_int32_t prob; 814 uid_t cuid; 815 pid_t cpid; 816 817 counter_u64_t states_cur; 818 counter_u64_t states_tot; 819 counter_u64_t src_nodes; 820 821 u_int16_t return_icmp; 822 u_int16_t return_icmp6; 823 u_int16_t max_mss; 824 u_int16_t tag; 825 u_int16_t match_tag; 826 u_int16_t scrub_flags; 827 828 struct pf_rule_uid uid; 829 struct pf_rule_gid gid; 830 831 u_int32_t rule_flag; 832 uint32_t rule_ref; 833 u_int8_t action; 834 u_int8_t direction; 835 u_int8_t log; 836 u_int8_t logif; 837 u_int8_t quick; 838 u_int8_t ifnot; 839 u_int8_t match_tag_not; 840 u_int8_t natpass; 841 842 u_int8_t keep_state; 843 sa_family_t af; 844 u_int8_t proto; 845 u_int8_t type; 846 u_int8_t code; 847 u_int8_t flags; 848 u_int8_t flagset; 849 u_int8_t min_ttl; 850 u_int8_t allow_opts; 851 u_int8_t rt; 852 u_int8_t return_ttl; 853 u_int8_t tos; 854 u_int8_t set_tos; 855 u_int8_t anchor_relative; 856 u_int8_t anchor_wildcard; 857 858 u_int8_t flush; 859 u_int8_t prio; 860 u_int8_t set_prio[2]; 861 862 struct { 863 struct pf_addr addr; 864 u_int16_t port; 865 } divert; 866 u_int8_t md5sum[PF_MD5_DIGEST_LENGTH]; 867 RB_ENTRY(pf_krule) entry_global; 868 869 #ifdef PF_WANT_32_TO_64_COUNTER 870 LIST_ENTRY(pf_krule) allrulelist; 871 bool allrulelinked; 872 #endif 873 }; 874 875 struct pf_krule_item { 876 SLIST_ENTRY(pf_krule_item) entry; 877 struct pf_krule *r; 878 }; 879 880 SLIST_HEAD(pf_krule_slist, pf_krule_item); 881 882 struct pf_ksrc_node { 883 LIST_ENTRY(pf_ksrc_node) entry; 884 struct pf_addr addr; 885 struct pf_addr raddr; 886 struct pf_krule_slist match_rules; 887 struct pf_krule *rule; 888 struct pfi_kkif *rkif; 889 counter_u64_t bytes[2]; 890 counter_u64_t packets[2]; 891 u_int32_t states; 892 u_int32_t conn; 893 struct pf_threshold conn_rate; 894 u_int32_t creation; 895 u_int32_t expire; 896 sa_family_t af; 897 u_int8_t ruletype; 898 struct mtx *lock; 899 }; 900 #endif 901 902 struct pf_state_scrub { 903 struct timeval pfss_last; /* time received last packet */ 904 u_int32_t pfss_tsecr; /* last echoed timestamp */ 905 u_int32_t pfss_tsval; /* largest timestamp */ 906 u_int32_t pfss_tsval0; /* original timestamp */ 907 u_int16_t pfss_flags; 908 #define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */ 909 #define PFSS_PAWS 0x0010 /* stricter PAWS checks */ 910 #define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */ 911 #define PFSS_DATA_TS 0x0040 /* timestamp on data packets */ 912 #define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */ 913 u_int8_t pfss_ttl; /* stashed TTL */ 914 u_int8_t pad; 915 union { 916 u_int32_t pfss_ts_mod; /* timestamp modulation */ 917 u_int32_t pfss_v_tag; /* SCTP verification tag */ 918 }; 919 }; 920 921 struct pf_state_host { 922 struct pf_addr addr; 923 u_int16_t port; 924 u_int16_t pad; 925 }; 926 927 struct pf_state_peer { 928 struct pf_state_scrub *scrub; /* state is scrubbed */ 929 u_int32_t seqlo; /* Max sequence number sent */ 930 u_int32_t seqhi; /* Max the other end ACKd + win */ 931 u_int32_t seqdiff; /* Sequence number modulator */ 932 u_int16_t max_win; /* largest window (pre scaling) */ 933 u_int16_t mss; /* Maximum segment size option */ 934 u_int8_t state; /* active state level */ 935 u_int8_t wscale; /* window scaling factor */ 936 u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */ 937 u_int8_t pad[1]; 938 }; 939 940 /* Keep synced with struct pf_udp_endpoint. */ 941 struct pf_udp_endpoint_cmp { 942 struct pf_addr addr; 943 uint16_t port; 944 sa_family_t af; 945 uint8_t pad[1]; 946 }; 947 948 struct pf_udp_endpoint { 949 struct pf_addr addr; 950 uint16_t port; 951 sa_family_t af; 952 uint8_t pad[1]; 953 954 struct pf_udp_mapping *mapping; 955 LIST_ENTRY(pf_udp_endpoint) entry; 956 }; 957 958 struct pf_udp_mapping { 959 struct pf_udp_endpoint endpoints[2]; 960 u_int refs; 961 }; 962 963 /* Keep synced with struct pf_state_key. */ 964 struct pf_state_key_cmp { 965 struct pf_addr addr[2]; 966 u_int16_t port[2]; 967 sa_family_t af; 968 u_int8_t proto; 969 u_int8_t pad[2]; 970 }; 971 972 struct pf_state_key { 973 struct pf_addr addr[2]; 974 u_int16_t port[2]; 975 sa_family_t af; 976 u_int8_t proto; 977 u_int8_t pad[2]; 978 979 LIST_ENTRY(pf_state_key) entry; 980 TAILQ_HEAD(, pf_kstate) states[2]; 981 }; 982 983 /* Keep synced with struct pf_kstate. */ 984 struct pf_state_cmp { 985 u_int64_t id; 986 u_int32_t creatorid; 987 u_int8_t direction; 988 u_int8_t pad[3]; 989 }; 990 991 struct pf_state_scrub_export { 992 uint16_t pfss_flags; 993 uint8_t pfss_ttl; /* stashed TTL */ 994 #define PF_SCRUB_FLAG_VALID 0x01 995 uint8_t scrub_flag; 996 uint32_t pfss_ts_mod; /* timestamp modulation */ 997 }; 998 999 struct pf_state_key_export { 1000 struct pf_addr addr[2]; 1001 uint16_t port[2]; 1002 }; 1003 1004 struct pf_state_peer_export { 1005 struct pf_state_scrub_export scrub; /* state is scrubbed */ 1006 uint32_t seqlo; /* Max sequence number sent */ 1007 uint32_t seqhi; /* Max the other end ACKd + win */ 1008 uint32_t seqdiff; /* Sequence number modulator */ 1009 uint16_t max_win; /* largest window (pre scaling) */ 1010 uint16_t mss; /* Maximum segment size option */ 1011 uint8_t state; /* active state level */ 1012 uint8_t wscale; /* window scaling factor */ 1013 uint8_t dummy[6]; 1014 }; 1015 _Static_assert(sizeof(struct pf_state_peer_export) == 32, "size incorrect"); 1016 1017 struct pf_state_export { 1018 uint64_t version; 1019 #define PF_STATE_VERSION 20230404 1020 uint64_t id; 1021 char ifname[IFNAMSIZ]; 1022 char orig_ifname[IFNAMSIZ]; 1023 struct pf_state_key_export key[2]; 1024 struct pf_state_peer_export src; 1025 struct pf_state_peer_export dst; 1026 struct pf_addr rt_addr; 1027 uint32_t rule; 1028 uint32_t anchor; 1029 uint32_t nat_rule; 1030 uint32_t creation; 1031 uint32_t expire; 1032 uint32_t spare0; 1033 uint64_t packets[2]; 1034 uint64_t bytes[2]; 1035 uint32_t creatorid; 1036 uint32_t spare1; 1037 sa_family_t af; 1038 uint8_t proto; 1039 uint8_t direction; 1040 uint8_t log; 1041 uint8_t state_flags_compat; 1042 uint8_t timeout; 1043 uint8_t sync_flags; 1044 uint8_t updates; 1045 uint16_t state_flags; 1046 uint16_t qid; 1047 uint16_t pqid; 1048 uint16_t dnpipe; 1049 uint16_t dnrpipe; 1050 int32_t rtableid; 1051 uint8_t min_ttl; 1052 uint8_t set_tos; 1053 uint16_t max_mss; 1054 uint8_t set_prio[2]; 1055 uint8_t rt; 1056 char rt_ifname[IFNAMSIZ]; 1057 1058 uint8_t spare[72]; 1059 }; 1060 _Static_assert(sizeof(struct pf_state_export) == 384, "size incorrect"); 1061 1062 #ifdef _KERNEL 1063 struct pf_kstate { 1064 /* 1065 * Area shared with pf_state_cmp 1066 */ 1067 u_int64_t id; 1068 u_int32_t creatorid; 1069 u_int8_t direction; 1070 u_int8_t pad[3]; 1071 /* 1072 * end of the area 1073 */ 1074 1075 u_int16_t state_flags; 1076 u_int8_t timeout; 1077 u_int8_t sync_state; /* PFSYNC_S_x */ 1078 u_int8_t sync_updates; /* XXX */ 1079 u_int refs; 1080 struct mtx *lock; 1081 TAILQ_ENTRY(pf_kstate) sync_list; 1082 TAILQ_ENTRY(pf_kstate) key_list[2]; 1083 LIST_ENTRY(pf_kstate) entry; 1084 struct pf_state_peer src; 1085 struct pf_state_peer dst; 1086 struct pf_krule_slist match_rules; 1087 struct pf_krule *rule; 1088 struct pf_krule *anchor; 1089 struct pf_krule *nat_rule; 1090 struct pf_addr rt_addr; 1091 struct pf_state_key *key[2]; /* addresses stack and wire */ 1092 struct pf_udp_mapping *udp_mapping; 1093 struct pfi_kkif *kif; 1094 struct pfi_kkif *orig_kif; /* The real kif, even if we're a floating state (i.e. if == V_pfi_all). */ 1095 struct pfi_kkif *rt_kif; 1096 struct pf_ksrc_node *src_node; 1097 struct pf_ksrc_node *nat_src_node; 1098 u_int64_t packets[2]; 1099 u_int64_t bytes[2]; 1100 u_int64_t creation; 1101 u_int64_t expire; 1102 u_int32_t pfsync_time; 1103 struct pf_rule_actions act; 1104 u_int16_t tag; 1105 u_int8_t rt; 1106 u_int16_t if_index_in; 1107 u_int16_t if_index_out; 1108 }; 1109 1110 /* 1111 * Size <= fits 11 objects per page on LP64. Try to not grow the struct beyond that. 1112 */ 1113 _Static_assert(sizeof(struct pf_kstate) <= 372, "pf_kstate size crosses 372 bytes"); 1114 #endif 1115 1116 /* 1117 * Unified state structures for pulling states out of the kernel 1118 * used by pfsync(4) and the pf(4) ioctl. 1119 */ 1120 struct pfsync_state_scrub { 1121 u_int16_t pfss_flags; 1122 u_int8_t pfss_ttl; /* stashed TTL */ 1123 #define PFSYNC_SCRUB_FLAG_VALID 0x01 1124 u_int8_t scrub_flag; 1125 u_int32_t pfss_ts_mod; /* timestamp modulation */ 1126 } __packed; 1127 1128 struct pfsync_state_peer { 1129 struct pfsync_state_scrub scrub; /* state is scrubbed */ 1130 u_int32_t seqlo; /* Max sequence number sent */ 1131 u_int32_t seqhi; /* Max the other end ACKd + win */ 1132 u_int32_t seqdiff; /* Sequence number modulator */ 1133 u_int16_t max_win; /* largest window (pre scaling) */ 1134 u_int16_t mss; /* Maximum segment size option */ 1135 u_int8_t state; /* active state level */ 1136 u_int8_t wscale; /* window scaling factor */ 1137 u_int8_t pad[6]; 1138 } __packed; 1139 1140 struct pfsync_state_key { 1141 struct pf_addr addr[2]; 1142 u_int16_t port[2]; 1143 }; 1144 1145 struct pfsync_state_1301 { 1146 u_int64_t id; 1147 char ifname[IFNAMSIZ]; 1148 struct pfsync_state_key key[2]; 1149 struct pfsync_state_peer src; 1150 struct pfsync_state_peer dst; 1151 struct pf_addr rt_addr; 1152 u_int32_t rule; 1153 u_int32_t anchor; 1154 u_int32_t nat_rule; 1155 u_int32_t creation; 1156 u_int32_t expire; 1157 u_int32_t packets[2][2]; 1158 u_int32_t bytes[2][2]; 1159 u_int32_t creatorid; 1160 sa_family_t af; 1161 u_int8_t proto; 1162 u_int8_t direction; 1163 u_int8_t __spare[2]; 1164 u_int8_t log; 1165 u_int8_t state_flags; 1166 u_int8_t timeout; 1167 u_int8_t sync_flags; 1168 u_int8_t updates; 1169 } __packed; 1170 1171 struct pfsync_state_1400 { 1172 /* The beginning of the struct is compatible with previous versions */ 1173 u_int64_t id; 1174 char ifname[IFNAMSIZ]; 1175 struct pfsync_state_key key[2]; 1176 struct pfsync_state_peer src; 1177 struct pfsync_state_peer dst; 1178 struct pf_addr rt_addr; 1179 u_int32_t rule; 1180 u_int32_t anchor; 1181 u_int32_t nat_rule; 1182 u_int32_t creation; 1183 u_int32_t expire; 1184 u_int32_t packets[2][2]; 1185 u_int32_t bytes[2][2]; 1186 u_int32_t creatorid; 1187 sa_family_t af; 1188 u_int8_t proto; 1189 u_int8_t direction; 1190 u_int16_t state_flags; 1191 u_int8_t log; 1192 u_int8_t __spare; 1193 u_int8_t timeout; 1194 u_int8_t sync_flags; 1195 u_int8_t updates; 1196 /* The rest is not */ 1197 u_int16_t qid; 1198 u_int16_t pqid; 1199 u_int16_t dnpipe; 1200 u_int16_t dnrpipe; 1201 int32_t rtableid; 1202 u_int8_t min_ttl; 1203 u_int8_t set_tos; 1204 u_int16_t max_mss; 1205 u_int8_t set_prio[2]; 1206 u_int8_t rt; 1207 char rt_ifname[IFNAMSIZ]; 1208 1209 } __packed; 1210 1211 union pfsync_state_union { 1212 struct pfsync_state_1301 pfs_1301; 1213 struct pfsync_state_1400 pfs_1400; 1214 } __packed; 1215 1216 #ifdef _KERNEL 1217 /* pfsync */ 1218 typedef int pfsync_state_import_t(union pfsync_state_union *, int, int); 1219 typedef void pfsync_insert_state_t(struct pf_kstate *); 1220 typedef void pfsync_update_state_t(struct pf_kstate *); 1221 typedef void pfsync_delete_state_t(struct pf_kstate *); 1222 typedef void pfsync_clear_states_t(u_int32_t, const char *); 1223 typedef int pfsync_defer_t(struct pf_kstate *, struct mbuf *); 1224 typedef void pfsync_detach_ifnet_t(struct ifnet *); 1225 typedef void pflow_export_state_t(const struct pf_kstate *); 1226 typedef bool pf_addr_filter_func_t(const sa_family_t, const struct pf_addr *); 1227 1228 VNET_DECLARE(pfsync_state_import_t *, pfsync_state_import_ptr); 1229 #define V_pfsync_state_import_ptr VNET(pfsync_state_import_ptr) 1230 VNET_DECLARE(pfsync_insert_state_t *, pfsync_insert_state_ptr); 1231 #define V_pfsync_insert_state_ptr VNET(pfsync_insert_state_ptr) 1232 VNET_DECLARE(pfsync_update_state_t *, pfsync_update_state_ptr); 1233 #define V_pfsync_update_state_ptr VNET(pfsync_update_state_ptr) 1234 VNET_DECLARE(pfsync_delete_state_t *, pfsync_delete_state_ptr); 1235 #define V_pfsync_delete_state_ptr VNET(pfsync_delete_state_ptr) 1236 VNET_DECLARE(pfsync_clear_states_t *, pfsync_clear_states_ptr); 1237 #define V_pfsync_clear_states_ptr VNET(pfsync_clear_states_ptr) 1238 VNET_DECLARE(pfsync_defer_t *, pfsync_defer_ptr); 1239 #define V_pfsync_defer_ptr VNET(pfsync_defer_ptr) 1240 VNET_DECLARE(pflow_export_state_t *, pflow_export_state_ptr); 1241 #define V_pflow_export_state_ptr VNET(pflow_export_state_ptr) 1242 extern pfsync_detach_ifnet_t *pfsync_detach_ifnet_ptr; 1243 1244 void pfsync_state_export(union pfsync_state_union *, 1245 struct pf_kstate *, int); 1246 void pf_state_export(struct pf_state_export *, 1247 struct pf_kstate *); 1248 1249 /* pflog */ 1250 struct pf_kruleset; 1251 struct pf_pdesc; 1252 typedef int pflog_packet_t(uint8_t, u_int8_t, 1253 struct pf_krule *, struct pf_krule *, struct pf_kruleset *, 1254 struct pf_pdesc *, int); 1255 extern pflog_packet_t *pflog_packet_ptr; 1256 1257 #endif /* _KERNEL */ 1258 1259 #define PFSYNC_FLAG_SRCNODE 0x04 1260 #define PFSYNC_FLAG_NATSRCNODE 0x08 1261 1262 /* for copies to/from network byte order */ 1263 /* ioctl interface also uses network byte order */ 1264 #define pf_state_peer_hton(s,d) do { \ 1265 (d)->seqlo = htonl((s)->seqlo); \ 1266 (d)->seqhi = htonl((s)->seqhi); \ 1267 (d)->seqdiff = htonl((s)->seqdiff); \ 1268 (d)->max_win = htons((s)->max_win); \ 1269 (d)->mss = htons((s)->mss); \ 1270 (d)->state = (s)->state; \ 1271 (d)->wscale = (s)->wscale; \ 1272 if ((s)->scrub) { \ 1273 (d)->scrub.pfss_flags = \ 1274 htons((s)->scrub->pfss_flags & PFSS_TIMESTAMP); \ 1275 (d)->scrub.pfss_ttl = (s)->scrub->pfss_ttl; \ 1276 (d)->scrub.pfss_ts_mod = htonl((s)->scrub->pfss_ts_mod);\ 1277 (d)->scrub.scrub_flag = PFSYNC_SCRUB_FLAG_VALID; \ 1278 } \ 1279 } while (0) 1280 1281 #define pf_state_peer_ntoh(s,d) do { \ 1282 (d)->seqlo = ntohl((s)->seqlo); \ 1283 (d)->seqhi = ntohl((s)->seqhi); \ 1284 (d)->seqdiff = ntohl((s)->seqdiff); \ 1285 (d)->max_win = ntohs((s)->max_win); \ 1286 (d)->mss = ntohs((s)->mss); \ 1287 (d)->state = (s)->state; \ 1288 (d)->wscale = (s)->wscale; \ 1289 if ((s)->scrub.scrub_flag == PFSYNC_SCRUB_FLAG_VALID && \ 1290 (d)->scrub != NULL) { \ 1291 (d)->scrub->pfss_flags = \ 1292 ntohs((s)->scrub.pfss_flags) & PFSS_TIMESTAMP; \ 1293 (d)->scrub->pfss_ttl = (s)->scrub.pfss_ttl; \ 1294 (d)->scrub->pfss_ts_mod = ntohl((s)->scrub.pfss_ts_mod);\ 1295 } \ 1296 } while (0) 1297 1298 #define pf_state_counter_hton(s,d) do { \ 1299 d[0] = htonl((s>>32)&0xffffffff); \ 1300 d[1] = htonl(s&0xffffffff); \ 1301 } while (0) 1302 1303 #define pf_state_counter_from_pfsync(s) \ 1304 (((u_int64_t)(s[0])<<32) | (u_int64_t)(s[1])) 1305 1306 #define pf_state_counter_ntoh(s,d) do { \ 1307 d = ntohl(s[0]); \ 1308 d = d<<32; \ 1309 d += ntohl(s[1]); \ 1310 } while (0) 1311 1312 TAILQ_HEAD(pf_krulequeue, pf_krule); 1313 1314 struct pf_kanchor; 1315 1316 struct pf_kruleset { 1317 struct { 1318 struct pf_krulequeue queues[2]; 1319 struct { 1320 struct pf_krulequeue *ptr; 1321 struct pf_krule **ptr_array; 1322 u_int32_t rcount; 1323 u_int32_t ticket; 1324 int open; 1325 struct pf_krule_global *tree; 1326 } active, inactive; 1327 } rules[PF_RULESET_MAX]; 1328 struct pf_kanchor *anchor; 1329 u_int32_t tticket; 1330 int tables; 1331 int topen; 1332 }; 1333 1334 RB_HEAD(pf_kanchor_global, pf_kanchor); 1335 RB_HEAD(pf_kanchor_node, pf_kanchor); 1336 struct pf_kanchor { 1337 RB_ENTRY(pf_kanchor) entry_global; 1338 RB_ENTRY(pf_kanchor) entry_node; 1339 struct pf_kanchor *parent; 1340 struct pf_kanchor_node children; 1341 char name[PF_ANCHOR_NAME_SIZE]; 1342 char path[MAXPATHLEN]; 1343 struct pf_kruleset ruleset; 1344 int refcnt; /* anchor rules */ 1345 }; 1346 RB_PROTOTYPE(pf_kanchor_global, pf_kanchor, entry_global, pf_anchor_compare); 1347 RB_PROTOTYPE(pf_kanchor_node, pf_kanchor, entry_node, pf_kanchor_compare); 1348 1349 #define PF_RESERVED_ANCHOR "_pf" 1350 1351 #define PFR_TFLAG_PERSIST 0x00000001 1352 #define PFR_TFLAG_CONST 0x00000002 1353 #define PFR_TFLAG_ACTIVE 0x00000004 1354 #define PFR_TFLAG_INACTIVE 0x00000008 1355 #define PFR_TFLAG_REFERENCED 0x00000010 1356 #define PFR_TFLAG_REFDANCHOR 0x00000020 1357 #define PFR_TFLAG_COUNTERS 0x00000040 1358 /* Adjust masks below when adding flags. */ 1359 #define PFR_TFLAG_USRMASK (PFR_TFLAG_PERSIST | \ 1360 PFR_TFLAG_CONST | \ 1361 PFR_TFLAG_COUNTERS) 1362 #define PFR_TFLAG_SETMASK (PFR_TFLAG_ACTIVE | \ 1363 PFR_TFLAG_INACTIVE | \ 1364 PFR_TFLAG_REFERENCED | \ 1365 PFR_TFLAG_REFDANCHOR) 1366 #define PFR_TFLAG_ALLMASK (PFR_TFLAG_PERSIST | \ 1367 PFR_TFLAG_CONST | \ 1368 PFR_TFLAG_ACTIVE | \ 1369 PFR_TFLAG_INACTIVE | \ 1370 PFR_TFLAG_REFERENCED | \ 1371 PFR_TFLAG_REFDANCHOR | \ 1372 PFR_TFLAG_COUNTERS) 1373 1374 struct pf_kanchor_stackframe; 1375 struct pf_keth_anchor_stackframe; 1376 1377 struct pfr_table { 1378 char pfrt_anchor[MAXPATHLEN]; 1379 char pfrt_name[PF_TABLE_NAME_SIZE]; 1380 u_int32_t pfrt_flags; 1381 u_int8_t pfrt_fback; 1382 }; 1383 1384 enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED, 1385 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE, 1386 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_NOCOUNT, PFR_FB_MAX }; 1387 1388 struct pfr_addr { 1389 union { 1390 struct in_addr _pfra_ip4addr; 1391 struct in6_addr _pfra_ip6addr; 1392 } pfra_u; 1393 u_int8_t pfra_af; 1394 u_int8_t pfra_net; 1395 u_int8_t pfra_not; 1396 u_int8_t pfra_fback; 1397 }; 1398 #define pfra_ip4addr pfra_u._pfra_ip4addr 1399 #define pfra_ip6addr pfra_u._pfra_ip6addr 1400 1401 enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX }; 1402 enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX }; 1403 enum { PFR_TYPE_PACKETS, PFR_TYPE_BYTES, PFR_TYPE_MAX }; 1404 #define PFR_NUM_COUNTERS (PFR_DIR_MAX * PFR_OP_ADDR_MAX * PFR_TYPE_MAX) 1405 #define PFR_OP_XPASS PFR_OP_ADDR_MAX 1406 1407 struct pfr_astats { 1408 struct pfr_addr pfras_a; 1409 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1410 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1411 long pfras_tzero; 1412 }; 1413 1414 enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX }; 1415 1416 struct pfr_tstats { 1417 struct pfr_table pfrts_t; 1418 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1419 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1420 u_int64_t pfrts_match; 1421 u_int64_t pfrts_nomatch; 1422 long pfrts_tzero; 1423 int pfrts_cnt; 1424 int pfrts_refcnt[PFR_REFCNT_MAX]; 1425 }; 1426 1427 #ifdef _KERNEL 1428 1429 struct pfr_kstate_counter { 1430 counter_u64_t pkc_pcpu; 1431 u_int64_t pkc_zero; 1432 }; 1433 1434 static inline int 1435 pfr_kstate_counter_init(struct pfr_kstate_counter *pfrc, int flags) 1436 { 1437 1438 pfrc->pkc_zero = 0; 1439 pfrc->pkc_pcpu = counter_u64_alloc(flags); 1440 if (pfrc->pkc_pcpu == NULL) 1441 return (ENOMEM); 1442 return (0); 1443 } 1444 1445 static inline void 1446 pfr_kstate_counter_deinit(struct pfr_kstate_counter *pfrc) 1447 { 1448 1449 counter_u64_free(pfrc->pkc_pcpu); 1450 } 1451 1452 static inline u_int64_t 1453 pfr_kstate_counter_fetch(struct pfr_kstate_counter *pfrc) 1454 { 1455 u_int64_t c; 1456 1457 c = counter_u64_fetch(pfrc->pkc_pcpu); 1458 c -= pfrc->pkc_zero; 1459 return (c); 1460 } 1461 1462 static inline void 1463 pfr_kstate_counter_zero(struct pfr_kstate_counter *pfrc) 1464 { 1465 u_int64_t c; 1466 1467 c = counter_u64_fetch(pfrc->pkc_pcpu); 1468 pfrc->pkc_zero = c; 1469 } 1470 1471 static inline void 1472 pfr_kstate_counter_add(struct pfr_kstate_counter *pfrc, int64_t n) 1473 { 1474 1475 counter_u64_add(pfrc->pkc_pcpu, n); 1476 } 1477 1478 struct pfr_ktstats { 1479 struct pfr_table pfrts_t; 1480 struct pfr_kstate_counter pfrkts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1481 struct pfr_kstate_counter pfrkts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1482 struct pfr_kstate_counter pfrkts_match; 1483 struct pfr_kstate_counter pfrkts_nomatch; 1484 long pfrkts_tzero; 1485 int pfrkts_cnt; 1486 int pfrkts_refcnt[PFR_REFCNT_MAX]; 1487 }; 1488 1489 #endif /* _KERNEL */ 1490 1491 #define pfrts_name pfrts_t.pfrt_name 1492 #define pfrts_flags pfrts_t.pfrt_flags 1493 1494 #ifndef _SOCKADDR_UNION_DEFINED 1495 #define _SOCKADDR_UNION_DEFINED 1496 union sockaddr_union { 1497 struct sockaddr sa; 1498 struct sockaddr_in sin; 1499 struct sockaddr_in6 sin6; 1500 }; 1501 #endif /* _SOCKADDR_UNION_DEFINED */ 1502 1503 struct pfr_kcounters { 1504 counter_u64_t pfrkc_counters; 1505 long pfrkc_tzero; 1506 }; 1507 #define pfr_kentry_counter(kc, dir, op, t) \ 1508 ((kc)->pfrkc_counters + \ 1509 (dir) * PFR_OP_ADDR_MAX * PFR_TYPE_MAX + (op) * PFR_TYPE_MAX + (t)) 1510 1511 #ifdef _KERNEL 1512 SLIST_HEAD(pfr_kentryworkq, pfr_kentry); 1513 struct pfr_kentry { 1514 struct radix_node pfrke_node[2]; 1515 union sockaddr_union pfrke_sa; 1516 SLIST_ENTRY(pfr_kentry) pfrke_workq; 1517 struct pfr_kcounters pfrke_counters; 1518 u_int8_t pfrke_af; 1519 u_int8_t pfrke_net; 1520 u_int8_t pfrke_not; 1521 u_int8_t pfrke_mark; 1522 }; 1523 1524 SLIST_HEAD(pfr_ktableworkq, pfr_ktable); 1525 RB_HEAD(pfr_ktablehead, pfr_ktable); 1526 struct pfr_ktable { 1527 struct pfr_ktstats pfrkt_kts; 1528 RB_ENTRY(pfr_ktable) pfrkt_tree; 1529 SLIST_ENTRY(pfr_ktable) pfrkt_workq; 1530 struct radix_node_head *pfrkt_ip4; 1531 struct radix_node_head *pfrkt_ip6; 1532 struct pfr_ktable *pfrkt_shadow; 1533 struct pfr_ktable *pfrkt_root; 1534 struct pf_kruleset *pfrkt_rs; 1535 long pfrkt_larg; 1536 int pfrkt_nflags; 1537 }; 1538 #define pfrkt_t pfrkt_kts.pfrts_t 1539 #define pfrkt_name pfrkt_t.pfrt_name 1540 #define pfrkt_anchor pfrkt_t.pfrt_anchor 1541 #define pfrkt_ruleset pfrkt_t.pfrt_ruleset 1542 #define pfrkt_flags pfrkt_t.pfrt_flags 1543 #define pfrkt_cnt pfrkt_kts.pfrkts_cnt 1544 #define pfrkt_refcnt pfrkt_kts.pfrkts_refcnt 1545 #define pfrkt_packets pfrkt_kts.pfrkts_packets 1546 #define pfrkt_bytes pfrkt_kts.pfrkts_bytes 1547 #define pfrkt_match pfrkt_kts.pfrkts_match 1548 #define pfrkt_nomatch pfrkt_kts.pfrkts_nomatch 1549 #define pfrkt_tzero pfrkt_kts.pfrkts_tzero 1550 #endif 1551 1552 #ifdef _KERNEL 1553 struct pfi_kkif { 1554 char pfik_name[IFNAMSIZ]; 1555 union { 1556 RB_ENTRY(pfi_kkif) _pfik_tree; 1557 LIST_ENTRY(pfi_kkif) _pfik_list; 1558 } _pfik_glue; 1559 #define pfik_tree _pfik_glue._pfik_tree 1560 #define pfik_list _pfik_glue._pfik_list 1561 struct pf_counter_u64 pfik_packets[2][2][2]; 1562 struct pf_counter_u64 pfik_bytes[2][2][2]; 1563 u_int32_t pfik_tzero; 1564 u_int pfik_flags; 1565 struct ifnet *pfik_ifp; 1566 struct ifg_group *pfik_group; 1567 u_int pfik_rulerefs; 1568 TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs; 1569 #ifdef PF_WANT_32_TO_64_COUNTER 1570 LIST_ENTRY(pfi_kkif) pfik_allkiflist; 1571 #endif 1572 }; 1573 #endif 1574 1575 #define PFI_IFLAG_REFS 0x0001 /* has state references */ 1576 #define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */ 1577 1578 #ifdef _KERNEL 1579 struct pf_sctp_multihome_job; 1580 TAILQ_HEAD(pf_sctp_multihome_jobs, pf_sctp_multihome_job); 1581 1582 struct pf_pdesc { 1583 struct { 1584 int done; 1585 uid_t uid; 1586 gid_t gid; 1587 } lookup; 1588 u_int64_t tot_len; /* Make Mickey money */ 1589 union pf_headers { 1590 struct tcphdr tcp; 1591 struct udphdr udp; 1592 struct sctphdr sctp; 1593 struct icmp icmp; 1594 #ifdef INET6 1595 struct icmp6_hdr icmp6; 1596 #endif /* INET6 */ 1597 char any[0]; 1598 } hdr; 1599 1600 struct pfi_kkif *kif; /* incomming interface */ 1601 struct mbuf *m; 1602 1603 struct pf_addr *src; /* src address */ 1604 struct pf_addr *dst; /* dst address */ 1605 u_int16_t *sport; 1606 u_int16_t *dport; 1607 struct pf_mtag *pf_mtag; 1608 struct pf_rule_actions act; 1609 1610 u_int32_t off; /* protocol header offset */ 1611 u_int32_t hdrlen; /* protocol header length */ 1612 u_int32_t p_len; /* total length of protocol payload */ 1613 u_int32_t badopts; /* v4 options or v6 routing headers */ 1614 1615 u_int16_t *ip_sum; 1616 u_int16_t *proto_sum; 1617 u_int16_t flags; /* Let SCRUB trigger behavior in 1618 * state code. Easier than tags */ 1619 #define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */ 1620 u_int16_t virtual_proto; 1621 #define PF_VPROTO_FRAGMENT 256 1622 int extoff; 1623 sa_family_t af; 1624 u_int8_t proto; 1625 u_int8_t tos; 1626 u_int8_t ttl; 1627 u_int8_t dir; /* direction */ 1628 u_int8_t sidx; /* key index for source */ 1629 u_int8_t didx; /* key index for destination */ 1630 #define PFDESC_SCTP_INIT 0x0001 1631 #define PFDESC_SCTP_INIT_ACK 0x0002 1632 #define PFDESC_SCTP_COOKIE 0x0004 1633 #define PFDESC_SCTP_COOKIE_ACK 0x0008 1634 #define PFDESC_SCTP_ABORT 0x0010 1635 #define PFDESC_SCTP_SHUTDOWN 0x0020 1636 #define PFDESC_SCTP_SHUTDOWN_COMPLETE 0x0040 1637 #define PFDESC_SCTP_DATA 0x0080 1638 #define PFDESC_SCTP_ASCONF 0x0100 1639 #define PFDESC_SCTP_HEARTBEAT 0x0200 1640 #define PFDESC_SCTP_HEARTBEAT_ACK 0x0400 1641 #define PFDESC_SCTP_OTHER 0x0800 1642 #define PFDESC_SCTP_ADD_IP 0x1000 1643 u_int16_t sctp_flags; 1644 u_int32_t sctp_initiate_tag; 1645 1646 struct pf_sctp_multihome_jobs sctp_multihome_jobs; 1647 }; 1648 1649 struct pf_sctp_multihome_job { 1650 TAILQ_ENTRY(pf_sctp_multihome_job) next; 1651 struct pf_pdesc pd; 1652 struct pf_addr src; 1653 struct pf_addr dst; 1654 int op; 1655 }; 1656 1657 #endif 1658 1659 /* flags for RDR options */ 1660 #define PF_DPORT_RANGE 0x01 /* Dest port uses range */ 1661 #define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */ 1662 1663 /* UDP state enumeration */ 1664 #define PFUDPS_NO_TRAFFIC 0 1665 #define PFUDPS_SINGLE 1 1666 #define PFUDPS_MULTIPLE 2 1667 1668 #define PFUDPS_NSTATES 3 /* number of state levels */ 1669 1670 #define PFUDPS_NAMES { \ 1671 "NO_TRAFFIC", \ 1672 "SINGLE", \ 1673 "MULTIPLE", \ 1674 NULL \ 1675 } 1676 1677 /* Other protocol state enumeration */ 1678 #define PFOTHERS_NO_TRAFFIC 0 1679 #define PFOTHERS_SINGLE 1 1680 #define PFOTHERS_MULTIPLE 2 1681 1682 #define PFOTHERS_NSTATES 3 /* number of state levels */ 1683 1684 #define PFOTHERS_NAMES { \ 1685 "NO_TRAFFIC", \ 1686 "SINGLE", \ 1687 "MULTIPLE", \ 1688 NULL \ 1689 } 1690 1691 #define ACTION_SET(a, x) \ 1692 do { \ 1693 if ((a) != NULL) \ 1694 *(a) = (x); \ 1695 } while (0) 1696 1697 #define REASON_SET(a, x) \ 1698 do { \ 1699 if ((a) != NULL) \ 1700 *(a) = (x); \ 1701 if (x < PFRES_MAX) \ 1702 counter_u64_add(V_pf_status.counters[x], 1); \ 1703 } while (0) 1704 1705 enum pf_syncookies_mode { 1706 PF_SYNCOOKIES_NEVER = 0, 1707 PF_SYNCOOKIES_ALWAYS = 1, 1708 PF_SYNCOOKIES_ADAPTIVE = 2, 1709 PF_SYNCOOKIES_MODE_MAX = PF_SYNCOOKIES_ADAPTIVE 1710 }; 1711 1712 #define PF_SYNCOOKIES_HIWATPCT 25 1713 #define PF_SYNCOOKIES_LOWATPCT (PF_SYNCOOKIES_HIWATPCT / 2) 1714 1715 #ifdef _KERNEL 1716 struct pf_kstatus { 1717 counter_u64_t counters[PFRES_MAX]; /* reason for passing/dropping */ 1718 counter_u64_t lcounters[KLCNT_MAX]; /* limit counters */ 1719 struct pf_counter_u64 fcounters[FCNT_MAX]; /* state operation counters */ 1720 counter_u64_t scounters[SCNT_MAX]; /* src_node operation counters */ 1721 uint32_t states; 1722 uint32_t src_nodes; 1723 uint32_t running; 1724 uint32_t since; 1725 uint32_t debug; 1726 uint32_t hostid; 1727 char ifname[IFNAMSIZ]; 1728 uint8_t pf_chksum[PF_MD5_DIGEST_LENGTH]; 1729 bool keep_counters; 1730 enum pf_syncookies_mode syncookies_mode; 1731 bool syncookies_active; 1732 uint64_t syncookies_inflight[2]; 1733 uint32_t states_halfopen; 1734 uint32_t reass; 1735 }; 1736 #endif 1737 1738 struct pf_divert { 1739 union { 1740 struct in_addr ipv4; 1741 struct in6_addr ipv6; 1742 } addr; 1743 u_int16_t port; 1744 }; 1745 1746 #define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */ 1747 #define PFR_KENTRY_HIWAT 200000 /* Number of table entries */ 1748 1749 /* 1750 * Limit the length of the fragment queue traversal. Remember 1751 * search entry points based on the fragment offset. 1752 */ 1753 #define PF_FRAG_ENTRY_POINTS 16 1754 1755 /* 1756 * The number of entries in the fragment queue must be limited 1757 * to avoid DoS by linear searching. Instead of a global limit, 1758 * use a limit per entry point. For large packets these sum up. 1759 */ 1760 #define PF_FRAG_ENTRY_LIMIT 64 1761 1762 /* 1763 * ioctl parameter structures 1764 */ 1765 1766 struct pfioc_pooladdr { 1767 u_int32_t action; 1768 u_int32_t ticket; 1769 u_int32_t nr; 1770 u_int32_t r_num; 1771 u_int8_t r_action; 1772 u_int8_t r_last; 1773 u_int8_t af; 1774 char anchor[MAXPATHLEN]; 1775 struct pf_pooladdr addr; 1776 }; 1777 1778 struct pfioc_rule { 1779 u_int32_t action; 1780 u_int32_t ticket; 1781 u_int32_t pool_ticket; 1782 u_int32_t nr; 1783 char anchor[MAXPATHLEN]; 1784 char anchor_call[MAXPATHLEN]; 1785 struct pf_rule rule; 1786 }; 1787 1788 struct pfioc_natlook { 1789 struct pf_addr saddr; 1790 struct pf_addr daddr; 1791 struct pf_addr rsaddr; 1792 struct pf_addr rdaddr; 1793 u_int16_t sport; 1794 u_int16_t dport; 1795 u_int16_t rsport; 1796 u_int16_t rdport; 1797 sa_family_t af; 1798 u_int8_t proto; 1799 u_int8_t direction; 1800 }; 1801 1802 struct pfioc_state { 1803 struct pfsync_state_1301 state; 1804 }; 1805 1806 struct pfioc_src_node_kill { 1807 sa_family_t psnk_af; 1808 struct pf_rule_addr psnk_src; 1809 struct pf_rule_addr psnk_dst; 1810 u_int psnk_killed; 1811 }; 1812 1813 #ifdef _KERNEL 1814 struct pf_kstate_kill { 1815 struct pf_state_cmp psk_pfcmp; 1816 sa_family_t psk_af; 1817 int psk_proto; 1818 struct pf_rule_addr psk_src; 1819 struct pf_rule_addr psk_dst; 1820 struct pf_rule_addr psk_rt_addr; 1821 char psk_ifname[IFNAMSIZ]; 1822 char psk_label[PF_RULE_LABEL_SIZE]; 1823 u_int psk_killed; 1824 bool psk_kill_match; 1825 bool psk_nat; 1826 }; 1827 #endif 1828 1829 struct pfioc_state_kill { 1830 struct pf_state_cmp psk_pfcmp; 1831 sa_family_t psk_af; 1832 int psk_proto; 1833 struct pf_rule_addr psk_src; 1834 struct pf_rule_addr psk_dst; 1835 char psk_ifname[IFNAMSIZ]; 1836 char psk_label[PF_RULE_LABEL_SIZE]; 1837 u_int psk_killed; 1838 }; 1839 1840 struct pfioc_states { 1841 int ps_len; 1842 union { 1843 void *ps_buf; 1844 struct pfsync_state_1301 *ps_states; 1845 }; 1846 }; 1847 1848 struct pfioc_states_v2 { 1849 int ps_len; 1850 uint64_t ps_req_version; 1851 union { 1852 void *ps_buf; 1853 struct pf_state_export *ps_states; 1854 }; 1855 }; 1856 1857 struct pfioc_src_nodes { 1858 int psn_len; 1859 union { 1860 void *psn_buf; 1861 struct pf_src_node *psn_src_nodes; 1862 }; 1863 }; 1864 1865 struct pfioc_if { 1866 char ifname[IFNAMSIZ]; 1867 }; 1868 1869 struct pfioc_tm { 1870 int timeout; 1871 int seconds; 1872 }; 1873 1874 struct pfioc_limit { 1875 int index; 1876 unsigned limit; 1877 }; 1878 1879 struct pfioc_altq_v0 { 1880 u_int32_t action; 1881 u_int32_t ticket; 1882 u_int32_t nr; 1883 struct pf_altq_v0 altq; 1884 }; 1885 1886 struct pfioc_altq_v1 { 1887 u_int32_t action; 1888 u_int32_t ticket; 1889 u_int32_t nr; 1890 /* 1891 * Placed here so code that only uses the above parameters can be 1892 * written entirely in terms of the v0 or v1 type. 1893 */ 1894 u_int32_t version; 1895 struct pf_altq_v1 altq; 1896 }; 1897 1898 /* 1899 * Latest version of struct pfioc_altq_vX. This must move in lock-step with 1900 * the latest version of struct pf_altq_vX as it has that struct as a 1901 * member. 1902 */ 1903 #define PFIOC_ALTQ_VERSION PF_ALTQ_VERSION 1904 1905 struct pfioc_qstats_v0 { 1906 u_int32_t ticket; 1907 u_int32_t nr; 1908 void *buf; 1909 int nbytes; 1910 u_int8_t scheduler; 1911 }; 1912 1913 struct pfioc_qstats_v1 { 1914 u_int32_t ticket; 1915 u_int32_t nr; 1916 void *buf; 1917 int nbytes; 1918 u_int8_t scheduler; 1919 /* 1920 * Placed here so code that only uses the above parameters can be 1921 * written entirely in terms of the v0 or v1 type. 1922 */ 1923 u_int32_t version; /* Requested version of stats struct */ 1924 }; 1925 1926 /* Latest version of struct pfioc_qstats_vX */ 1927 #define PFIOC_QSTATS_VERSION 1 1928 1929 struct pfioc_ruleset { 1930 u_int32_t nr; 1931 char path[MAXPATHLEN]; 1932 char name[PF_ANCHOR_NAME_SIZE]; 1933 }; 1934 1935 #define PF_RULESET_ALTQ (PF_RULESET_MAX) 1936 #define PF_RULESET_TABLE (PF_RULESET_MAX+1) 1937 #define PF_RULESET_ETH (PF_RULESET_MAX+2) 1938 struct pfioc_trans { 1939 int size; /* number of elements */ 1940 int esize; /* size of each element in bytes */ 1941 struct pfioc_trans_e { 1942 int rs_num; 1943 char anchor[MAXPATHLEN]; 1944 u_int32_t ticket; 1945 } *array; 1946 }; 1947 1948 #define PFR_FLAG_ATOMIC 0x00000001 /* unused */ 1949 #define PFR_FLAG_DUMMY 0x00000002 1950 #define PFR_FLAG_FEEDBACK 0x00000004 1951 #define PFR_FLAG_CLSTATS 0x00000008 1952 #define PFR_FLAG_ADDRSTOO 0x00000010 1953 #define PFR_FLAG_REPLACE 0x00000020 1954 #define PFR_FLAG_ALLRSETS 0x00000040 1955 #define PFR_FLAG_ALLMASK 0x0000007F 1956 #ifdef _KERNEL 1957 #define PFR_FLAG_USERIOCTL 0x10000000 1958 #endif 1959 1960 struct pfioc_table { 1961 struct pfr_table pfrio_table; 1962 void *pfrio_buffer; 1963 int pfrio_esize; 1964 int pfrio_size; 1965 int pfrio_size2; 1966 int pfrio_nadd; 1967 int pfrio_ndel; 1968 int pfrio_nchange; 1969 int pfrio_flags; 1970 u_int32_t pfrio_ticket; 1971 }; 1972 #define pfrio_exists pfrio_nadd 1973 #define pfrio_nzero pfrio_nadd 1974 #define pfrio_nmatch pfrio_nadd 1975 #define pfrio_naddr pfrio_size2 1976 #define pfrio_setflag pfrio_size2 1977 #define pfrio_clrflag pfrio_nadd 1978 1979 struct pfioc_iface { 1980 char pfiio_name[IFNAMSIZ]; 1981 void *pfiio_buffer; 1982 int pfiio_esize; 1983 int pfiio_size; 1984 int pfiio_nzero; 1985 int pfiio_flags; 1986 }; 1987 1988 /* 1989 * ioctl operations 1990 */ 1991 1992 #define DIOCSTART _IO ('D', 1) 1993 #define DIOCSTOP _IO ('D', 2) 1994 #define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule) 1995 #define DIOCADDRULENV _IOWR('D', 4, struct pfioc_nv) 1996 #define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule) 1997 #define DIOCGETRULENV _IOWR('D', 7, struct pfioc_nv) 1998 /* XXX cut 8 - 17 */ 1999 #define DIOCCLRSTATESNV _IOWR('D', 18, struct pfioc_nv) 2000 #define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state) 2001 #define DIOCGETSTATENV _IOWR('D', 19, struct pfioc_nv) 2002 #define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if) 2003 #define DIOCGETSTATUSNV _IOWR('D', 21, struct pfioc_nv) 2004 #define DIOCCLRSTATUS _IO ('D', 22) 2005 #define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook) 2006 #define DIOCSETDEBUG _IOWR('D', 24, u_int32_t) 2007 #ifdef COMPAT_FREEBSD14 2008 #define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states) 2009 #endif 2010 #define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule) 2011 /* XXX cut 26 - 28 */ 2012 #define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm) 2013 #define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm) 2014 #define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state) 2015 #define DIOCCLRRULECTRS _IO ('D', 38) 2016 #define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit) 2017 #define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit) 2018 #define DIOCKILLSTATESNV _IOWR('D', 41, struct pfioc_nv) 2019 #define DIOCSTARTALTQ _IO ('D', 42) 2020 #define DIOCSTOPALTQ _IO ('D', 43) 2021 #define DIOCADDALTQV0 _IOWR('D', 45, struct pfioc_altq_v0) 2022 #define DIOCADDALTQV1 _IOWR('D', 45, struct pfioc_altq_v1) 2023 #define DIOCGETALTQSV0 _IOWR('D', 47, struct pfioc_altq_v0) 2024 #define DIOCGETALTQSV1 _IOWR('D', 47, struct pfioc_altq_v1) 2025 #define DIOCGETALTQV0 _IOWR('D', 48, struct pfioc_altq_v0) 2026 #define DIOCGETALTQV1 _IOWR('D', 48, struct pfioc_altq_v1) 2027 #define DIOCCHANGEALTQV0 _IOWR('D', 49, struct pfioc_altq_v0) 2028 #define DIOCCHANGEALTQV1 _IOWR('D', 49, struct pfioc_altq_v1) 2029 #define DIOCGETQSTATSV0 _IOWR('D', 50, struct pfioc_qstats_v0) 2030 #define DIOCGETQSTATSV1 _IOWR('D', 50, struct pfioc_qstats_v1) 2031 #define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr) 2032 #define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr) 2033 #define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr) 2034 #define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr) 2035 #define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr) 2036 /* XXX cut 55 - 57 */ 2037 #define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset) 2038 #define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset) 2039 #define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table) 2040 #define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table) 2041 #define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table) 2042 #define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table) 2043 #define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table) 2044 #define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table) 2045 #define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table) 2046 #define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table) 2047 #define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table) 2048 #define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table) 2049 #define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table) 2050 #define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table) 2051 #define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table) 2052 #define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table) 2053 #define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table) 2054 #define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table) 2055 #define DIOCOSFPFLUSH _IO('D', 78) 2056 #define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl) 2057 #define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl) 2058 #define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans) 2059 #define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans) 2060 #define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans) 2061 #define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes) 2062 #define DIOCCLRSRCNODES _IO('D', 85) 2063 #define DIOCSETHOSTID _IOWR('D', 86, u_int32_t) 2064 #define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface) 2065 #define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface) 2066 #define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface) 2067 #define DIOCKILLSRCNODES _IOWR('D', 91, struct pfioc_src_node_kill) 2068 #define DIOCGIFSPEEDV0 _IOWR('D', 92, struct pf_ifspeed_v0) 2069 #define DIOCGIFSPEEDV1 _IOWR('D', 92, struct pf_ifspeed_v1) 2070 #ifdef COMPAT_FREEBSD14 2071 #define DIOCGETSTATESV2 _IOWR('D', 93, struct pfioc_states_v2) 2072 #endif 2073 #define DIOCGETSYNCOOKIES _IOWR('D', 94, struct pfioc_nv) 2074 #define DIOCSETSYNCOOKIES _IOWR('D', 95, struct pfioc_nv) 2075 #define DIOCKEEPCOUNTERS _IOWR('D', 96, struct pfioc_nv) 2076 #define DIOCKEEPCOUNTERS_FREEBSD13 _IOWR('D', 92, struct pfioc_nv) 2077 #define DIOCADDETHRULE _IOWR('D', 97, struct pfioc_nv) 2078 #define DIOCGETETHRULE _IOWR('D', 98, struct pfioc_nv) 2079 #define DIOCGETETHRULES _IOWR('D', 99, struct pfioc_nv) 2080 #define DIOCGETETHRULESETS _IOWR('D', 100, struct pfioc_nv) 2081 #define DIOCGETETHRULESET _IOWR('D', 101, struct pfioc_nv) 2082 #define DIOCSETREASS _IOWR('D', 102, u_int32_t) 2083 2084 struct pf_ifspeed_v0 { 2085 char ifname[IFNAMSIZ]; 2086 u_int32_t baudrate; 2087 }; 2088 2089 struct pf_ifspeed_v1 { 2090 char ifname[IFNAMSIZ]; 2091 u_int32_t baudrate32; 2092 /* layout identical to struct pf_ifspeed_v0 up to this point */ 2093 u_int64_t baudrate; 2094 }; 2095 2096 /* Latest version of struct pf_ifspeed_vX */ 2097 #define PF_IFSPEED_VERSION 1 2098 2099 /* 2100 * Compatibility and convenience macros 2101 */ 2102 #ifndef _KERNEL 2103 #ifdef PFIOC_USE_LATEST 2104 /* 2105 * Maintaining in-tree consumers of the ioctl interface is easier when that 2106 * code can be written in terms old names that refer to the latest interface 2107 * version as that reduces the required changes in the consumers to those 2108 * that are functionally necessary to accommodate a new interface version. 2109 */ 2110 #define pfioc_altq __CONCAT(pfioc_altq_v, PFIOC_ALTQ_VERSION) 2111 #define pfioc_qstats __CONCAT(pfioc_qstats_v, PFIOC_QSTATS_VERSION) 2112 #define pf_ifspeed __CONCAT(pf_ifspeed_v, PF_IFSPEED_VERSION) 2113 2114 #define DIOCADDALTQ __CONCAT(DIOCADDALTQV, PFIOC_ALTQ_VERSION) 2115 #define DIOCGETALTQS __CONCAT(DIOCGETALTQSV, PFIOC_ALTQ_VERSION) 2116 #define DIOCGETALTQ __CONCAT(DIOCGETALTQV, PFIOC_ALTQ_VERSION) 2117 #define DIOCCHANGEALTQ __CONCAT(DIOCCHANGEALTQV, PFIOC_ALTQ_VERSION) 2118 #define DIOCGETQSTATS __CONCAT(DIOCGETQSTATSV, PFIOC_QSTATS_VERSION) 2119 #define DIOCGIFSPEED __CONCAT(DIOCGIFSPEEDV, PF_IFSPEED_VERSION) 2120 #else 2121 /* 2122 * When building out-of-tree code that is written for the old interface, 2123 * such as may exist in ports for example, resolve the old struct tags and 2124 * ioctl command names to the v0 versions. 2125 */ 2126 #define pfioc_altq __CONCAT(pfioc_altq_v, 0) 2127 #define pfioc_qstats __CONCAT(pfioc_qstats_v, 0) 2128 #define pf_ifspeed __CONCAT(pf_ifspeed_v, 0) 2129 2130 #define DIOCADDALTQ __CONCAT(DIOCADDALTQV, 0) 2131 #define DIOCGETALTQS __CONCAT(DIOCGETALTQSV, 0) 2132 #define DIOCGETALTQ __CONCAT(DIOCGETALTQV, 0) 2133 #define DIOCCHANGEALTQ __CONCAT(DIOCCHANGEALTQV, 0) 2134 #define DIOCGETQSTATS __CONCAT(DIOCGETQSTATSV, 0) 2135 #define DIOCGIFSPEED __CONCAT(DIOCGIFSPEEDV, 0) 2136 #endif /* PFIOC_USE_LATEST */ 2137 #endif /* _KERNEL */ 2138 2139 #ifdef _KERNEL 2140 LIST_HEAD(pf_ksrc_node_list, pf_ksrc_node); 2141 struct pf_srchash { 2142 struct pf_ksrc_node_list nodes; 2143 struct mtx lock; 2144 }; 2145 2146 struct pf_keyhash { 2147 LIST_HEAD(, pf_state_key) keys; 2148 struct mtx lock; 2149 }; 2150 2151 struct pf_idhash { 2152 LIST_HEAD(, pf_kstate) states; 2153 struct mtx lock; 2154 }; 2155 2156 struct pf_udpendpointhash { 2157 LIST_HEAD(, pf_udp_endpoint) endpoints; 2158 /* refcont is synchronized on the source endpoint's row lock */ 2159 struct mtx lock; 2160 }; 2161 2162 extern u_long pf_ioctl_maxcount; 2163 VNET_DECLARE(u_long, pf_hashmask); 2164 #define V_pf_hashmask VNET(pf_hashmask) 2165 VNET_DECLARE(u_long, pf_srchashmask); 2166 #define V_pf_srchashmask VNET(pf_srchashmask) 2167 VNET_DECLARE(u_long, pf_udpendpointhashmask); 2168 #define V_pf_udpendpointhashmask VNET(pf_udpendpointhashmask) 2169 #define PF_HASHSIZ (131072) 2170 #define PF_SRCHASHSIZ (PF_HASHSIZ/4) 2171 #define PF_UDPENDHASHSIZ (PF_HASHSIZ/4) 2172 VNET_DECLARE(struct pf_keyhash *, pf_keyhash); 2173 VNET_DECLARE(struct pf_idhash *, pf_idhash); 2174 VNET_DECLARE(struct pf_udpendpointhash *, pf_udpendpointhash); 2175 #define V_pf_keyhash VNET(pf_keyhash) 2176 #define V_pf_idhash VNET(pf_idhash) 2177 #define V_pf_udpendpointhash VNET(pf_udpendpointhash) 2178 VNET_DECLARE(struct pf_srchash *, pf_srchash); 2179 #define V_pf_srchash VNET(pf_srchash) 2180 2181 #define PF_IDHASH(s) (be64toh((s)->id) % (V_pf_hashmask + 1)) 2182 2183 VNET_DECLARE(void *, pf_swi_cookie); 2184 #define V_pf_swi_cookie VNET(pf_swi_cookie) 2185 VNET_DECLARE(struct intr_event *, pf_swi_ie); 2186 #define V_pf_swi_ie VNET(pf_swi_ie) 2187 2188 VNET_DECLARE(struct unrhdr64, pf_stateid); 2189 #define V_pf_stateid VNET(pf_stateid) 2190 2191 TAILQ_HEAD(pf_altqqueue, pf_altq); 2192 VNET_DECLARE(struct pf_altqqueue, pf_altqs[4]); 2193 #define V_pf_altqs VNET(pf_altqs) 2194 VNET_DECLARE(struct pf_kpalist, pf_pabuf); 2195 #define V_pf_pabuf VNET(pf_pabuf) 2196 2197 VNET_DECLARE(u_int32_t, ticket_altqs_active); 2198 #define V_ticket_altqs_active VNET(ticket_altqs_active) 2199 VNET_DECLARE(u_int32_t, ticket_altqs_inactive); 2200 #define V_ticket_altqs_inactive VNET(ticket_altqs_inactive) 2201 VNET_DECLARE(int, altqs_inactive_open); 2202 #define V_altqs_inactive_open VNET(altqs_inactive_open) 2203 VNET_DECLARE(u_int32_t, ticket_pabuf); 2204 #define V_ticket_pabuf VNET(ticket_pabuf) 2205 VNET_DECLARE(struct pf_altqqueue *, pf_altqs_active); 2206 #define V_pf_altqs_active VNET(pf_altqs_active) 2207 VNET_DECLARE(struct pf_altqqueue *, pf_altq_ifs_active); 2208 #define V_pf_altq_ifs_active VNET(pf_altq_ifs_active) 2209 VNET_DECLARE(struct pf_altqqueue *, pf_altqs_inactive); 2210 #define V_pf_altqs_inactive VNET(pf_altqs_inactive) 2211 VNET_DECLARE(struct pf_altqqueue *, pf_altq_ifs_inactive); 2212 #define V_pf_altq_ifs_inactive VNET(pf_altq_ifs_inactive) 2213 2214 VNET_DECLARE(struct pf_krulequeue, pf_unlinked_rules); 2215 #define V_pf_unlinked_rules VNET(pf_unlinked_rules) 2216 2217 #ifdef PF_WANT_32_TO_64_COUNTER 2218 LIST_HEAD(allkiflist_head, pfi_kkif); 2219 VNET_DECLARE(struct allkiflist_head, pf_allkiflist); 2220 #define V_pf_allkiflist VNET(pf_allkiflist) 2221 VNET_DECLARE(size_t, pf_allkifcount); 2222 #define V_pf_allkifcount VNET(pf_allkifcount) 2223 VNET_DECLARE(struct pfi_kkif *, pf_kifmarker); 2224 #define V_pf_kifmarker VNET(pf_kifmarker) 2225 2226 LIST_HEAD(allrulelist_head, pf_krule); 2227 VNET_DECLARE(struct allrulelist_head, pf_allrulelist); 2228 #define V_pf_allrulelist VNET(pf_allrulelist) 2229 VNET_DECLARE(size_t, pf_allrulecount); 2230 #define V_pf_allrulecount VNET(pf_allrulecount) 2231 VNET_DECLARE(struct pf_krule *, pf_rulemarker); 2232 #define V_pf_rulemarker VNET(pf_rulemarker) 2233 #endif 2234 2235 int pf_start(void); 2236 int pf_stop(void); 2237 void pf_initialize(void); 2238 void pf_mtag_initialize(void); 2239 void pf_mtag_cleanup(void); 2240 void pf_cleanup(void); 2241 2242 struct pf_mtag *pf_get_mtag(struct mbuf *); 2243 2244 extern void pf_calc_skip_steps(struct pf_krulequeue *); 2245 #ifdef ALTQ 2246 extern void pf_altq_ifnet_event(struct ifnet *, int); 2247 #endif 2248 VNET_DECLARE(uma_zone_t, pf_state_z); 2249 #define V_pf_state_z VNET(pf_state_z) 2250 VNET_DECLARE(uma_zone_t, pf_state_key_z); 2251 #define V_pf_state_key_z VNET(pf_state_key_z) 2252 VNET_DECLARE(uma_zone_t, pf_udp_mapping_z); 2253 #define V_pf_udp_mapping_z VNET(pf_udp_mapping_z) 2254 VNET_DECLARE(uma_zone_t, pf_state_scrub_z); 2255 #define V_pf_state_scrub_z VNET(pf_state_scrub_z) 2256 2257 extern void pf_purge_thread(void *); 2258 extern void pf_unload_vnet_purge(void); 2259 extern void pf_intr(void *); 2260 extern void pf_purge_expired_src_nodes(void); 2261 2262 extern int pf_unlink_state(struct pf_kstate *); 2263 extern int pf_state_insert(struct pfi_kkif *, 2264 struct pfi_kkif *, 2265 struct pf_state_key *, 2266 struct pf_state_key *, 2267 struct pf_kstate *); 2268 extern struct pf_kstate *pf_alloc_state(int); 2269 extern void pf_free_state(struct pf_kstate *); 2270 extern void pf_killstates(struct pf_kstate_kill *, 2271 unsigned int *); 2272 extern unsigned int pf_clear_states(const struct pf_kstate_kill *); 2273 2274 static __inline void 2275 pf_ref_state(struct pf_kstate *s) 2276 { 2277 2278 refcount_acquire(&s->refs); 2279 } 2280 2281 static __inline int 2282 pf_release_state(struct pf_kstate *s) 2283 { 2284 2285 if (refcount_release(&s->refs)) { 2286 pf_free_state(s); 2287 return (1); 2288 } else 2289 return (0); 2290 } 2291 2292 static __inline int 2293 pf_release_staten(struct pf_kstate *s, u_int n) 2294 { 2295 2296 if (refcount_releasen(&s->refs, n)) { 2297 pf_free_state(s); 2298 return (1); 2299 } else 2300 return (0); 2301 } 2302 2303 static __inline uint64_t 2304 pf_get_uptime(void) 2305 { 2306 struct timeval t; 2307 microuptime(&t); 2308 return ((t.tv_sec * 1000) + (t.tv_usec / 1000)); 2309 } 2310 2311 static __inline uint64_t 2312 pf_get_time(void) 2313 { 2314 struct timeval t; 2315 microtime(&t); 2316 return ((t.tv_sec * 1000) + (t.tv_usec / 1000)); 2317 } 2318 2319 extern struct pf_kstate *pf_find_state_byid(uint64_t, uint32_t); 2320 extern struct pf_kstate *pf_find_state_all( 2321 const struct pf_state_key_cmp *, 2322 u_int, int *); 2323 extern bool pf_find_state_all_exists( 2324 const struct pf_state_key_cmp *, 2325 u_int); 2326 extern struct pf_udp_mapping *pf_udp_mapping_find(struct pf_udp_endpoint_cmp 2327 *endpoint); 2328 extern struct pf_udp_mapping *pf_udp_mapping_create(sa_family_t af, 2329 struct pf_addr *src_addr, uint16_t src_port, 2330 struct pf_addr *nat_addr, uint16_t nat_port); 2331 extern int pf_udp_mapping_insert(struct pf_udp_mapping 2332 *mapping); 2333 extern void pf_udp_mapping_release(struct pf_udp_mapping 2334 *mapping); 2335 extern struct pf_ksrc_node *pf_find_src_node(struct pf_addr *, 2336 struct pf_krule *, sa_family_t, 2337 struct pf_srchash **, bool); 2338 extern void pf_unlink_src_node(struct pf_ksrc_node *); 2339 extern u_int pf_free_src_nodes(struct pf_ksrc_node_list *); 2340 extern void pf_print_state(struct pf_kstate *); 2341 extern void pf_print_flags(u_int8_t); 2342 extern int pf_addr_wrap_neq(struct pf_addr_wrap *, 2343 struct pf_addr_wrap *); 2344 extern u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t, 2345 u_int8_t); 2346 extern u_int16_t pf_proto_cksum_fixup(struct mbuf *, u_int16_t, 2347 u_int16_t, u_int16_t, u_int8_t); 2348 2349 VNET_DECLARE(struct ifnet *, sync_ifp); 2350 #define V_sync_ifp VNET(sync_ifp); 2351 VNET_DECLARE(struct pf_krule, pf_default_rule); 2352 #define V_pf_default_rule VNET(pf_default_rule) 2353 extern void pf_addrcpy(struct pf_addr *, struct pf_addr *, 2354 sa_family_t); 2355 void pf_free_rule(struct pf_krule *); 2356 2357 int pf_test_eth(int, int, struct ifnet *, struct mbuf **, struct inpcb *); 2358 int pf_scan_sctp(struct pf_pdesc *); 2359 #if defined(INET) || defined(INET6) 2360 int pf_test(sa_family_t, int, int, struct ifnet *, struct mbuf **, struct inpcb *, 2361 struct pf_rule_actions *); 2362 #endif 2363 #ifdef INET 2364 int pf_normalize_ip(struct mbuf **, u_short *, struct pf_pdesc *); 2365 #endif /* INET */ 2366 2367 #ifdef INET6 2368 int pf_walk_header6(struct mbuf *, struct ip6_hdr *, int *, int *, int *, 2369 uint8_t *, uint32_t *, u_short *); 2370 int pf_normalize_ip6(struct mbuf **, int, u_short *, struct pf_pdesc *); 2371 void pf_poolmask(struct pf_addr *, struct pf_addr*, 2372 struct pf_addr *, struct pf_addr *, sa_family_t); 2373 void pf_addr_inc(struct pf_addr *, sa_family_t); 2374 int pf_max_frag_size(struct mbuf *); 2375 int pf_refragment6(struct ifnet *, struct mbuf **, struct m_tag *, bool); 2376 #endif /* INET6 */ 2377 2378 int pf_multihome_scan_init(int, int, struct pf_pdesc *); 2379 int pf_multihome_scan_asconf(int, int, struct pf_pdesc *); 2380 2381 u_int32_t pf_new_isn(struct pf_kstate *); 2382 void *pf_pull_hdr(const struct mbuf *, int, void *, int, u_short *, u_short *, 2383 sa_family_t); 2384 void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t); 2385 void pf_change_proto_a(struct mbuf *, void *, u_int16_t *, u_int32_t, 2386 u_int8_t); 2387 void pf_change_tcp_a(struct mbuf *, void *, u_int16_t *, u_int32_t); 2388 void pf_patch_16_unaligned(struct mbuf *, u_int16_t *, void *, u_int16_t, 2389 bool, u_int8_t); 2390 void pf_patch_32_unaligned(struct mbuf *, u_int16_t *, void *, u_int32_t, 2391 bool, u_int8_t); 2392 void pf_send_deferred_syn(struct pf_kstate *); 2393 int pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *, 2394 struct pf_addr *, sa_family_t); 2395 int pf_match_addr_range(struct pf_addr *, struct pf_addr *, 2396 struct pf_addr *, sa_family_t); 2397 int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t); 2398 2399 void pf_normalize_init(void); 2400 void pf_normalize_cleanup(void); 2401 int pf_normalize_tcp(struct pf_pdesc *); 2402 void pf_normalize_tcp_cleanup(struct pf_kstate *); 2403 int pf_normalize_tcp_init(struct pf_pdesc *, 2404 struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *); 2405 int pf_normalize_tcp_stateful(struct pf_pdesc *, 2406 u_short *, struct tcphdr *, struct pf_kstate *, 2407 struct pf_state_peer *, struct pf_state_peer *, int *); 2408 int pf_normalize_sctp_init(struct pf_pdesc *, 2409 struct pf_state_peer *, struct pf_state_peer *); 2410 int pf_normalize_sctp(struct pf_pdesc *); 2411 u_int32_t 2412 pf_state_expires(const struct pf_kstate *); 2413 void pf_purge_expired_fragments(void); 2414 void pf_purge_fragments(uint32_t); 2415 int pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kkif *, 2416 int); 2417 int pf_socket_lookup(struct pf_pdesc *); 2418 struct pf_state_key *pf_alloc_state_key(int); 2419 void pfr_initialize(void); 2420 void pfr_cleanup(void); 2421 int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t); 2422 void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t, 2423 u_int64_t, int, int, int); 2424 int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, sa_family_t, 2425 pf_addr_filter_func_t); 2426 void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *); 2427 struct pfr_ktable * 2428 pfr_attach_table(struct pf_kruleset *, char *); 2429 struct pfr_ktable * 2430 pfr_eth_attach_table(struct pf_keth_ruleset *, char *); 2431 void pfr_detach_table(struct pfr_ktable *); 2432 int pfr_clr_tables(struct pfr_table *, int *, int); 2433 int pfr_add_tables(struct pfr_table *, int, int *, int); 2434 int pfr_del_tables(struct pfr_table *, int, int *, int); 2435 int pfr_table_count(struct pfr_table *, int); 2436 int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int); 2437 int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int); 2438 int pfr_clr_tstats(struct pfr_table *, int, int *, int); 2439 int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int); 2440 int pfr_clr_addrs(struct pfr_table *, int *, int); 2441 int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *, long); 2442 int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 2443 int); 2444 int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 2445 int); 2446 int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 2447 int *, int *, int *, int, u_int32_t); 2448 int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int); 2449 int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int); 2450 int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *, 2451 int); 2452 int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 2453 int); 2454 int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int); 2455 int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int); 2456 int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int); 2457 int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *, 2458 int *, u_int32_t, int); 2459 2460 MALLOC_DECLARE(PFI_MTYPE); 2461 VNET_DECLARE(struct pfi_kkif *, pfi_all); 2462 #define V_pfi_all VNET(pfi_all) 2463 2464 void pfi_initialize(void); 2465 void pfi_initialize_vnet(void); 2466 void pfi_cleanup(void); 2467 void pfi_cleanup_vnet(void); 2468 void pfi_kkif_ref(struct pfi_kkif *); 2469 void pfi_kkif_unref(struct pfi_kkif *); 2470 struct pfi_kkif *pfi_kkif_find(const char *); 2471 struct pfi_kkif *pfi_kkif_attach(struct pfi_kkif *, const char *); 2472 int pfi_kkif_match(struct pfi_kkif *, struct pfi_kkif *); 2473 void pfi_kkif_purge(void); 2474 int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *, 2475 sa_family_t); 2476 int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t); 2477 void pfi_dynaddr_remove(struct pfi_dynaddr *); 2478 void pfi_dynaddr_copyout(struct pf_addr_wrap *); 2479 void pfi_update_status(const char *, struct pf_status *); 2480 void pfi_get_ifaces(const char *, struct pfi_kif *, int *); 2481 int pfi_set_flags(const char *, int); 2482 int pfi_clear_flags(const char *, int); 2483 2484 int pf_match_tag(struct mbuf *, struct pf_krule *, int *, int); 2485 int pf_tag_packet(struct pf_pdesc *, int); 2486 int pf_addr_cmp(struct pf_addr *, struct pf_addr *, 2487 sa_family_t); 2488 2489 u_int16_t pf_get_mss(struct pf_pdesc *); 2490 u_int8_t pf_get_wscale(struct pf_pdesc *); 2491 struct mbuf *pf_build_tcp(const struct pf_krule *, sa_family_t, 2492 const struct pf_addr *, const struct pf_addr *, 2493 u_int16_t, u_int16_t, u_int32_t, u_int32_t, 2494 u_int8_t, u_int16_t, u_int16_t, u_int8_t, bool, 2495 u_int16_t, u_int16_t, int); 2496 void pf_send_tcp(const struct pf_krule *, sa_family_t, 2497 const struct pf_addr *, const struct pf_addr *, 2498 u_int16_t, u_int16_t, u_int32_t, u_int32_t, 2499 u_int8_t, u_int16_t, u_int16_t, u_int8_t, bool, 2500 u_int16_t, u_int16_t, int); 2501 2502 void pf_syncookies_init(void); 2503 void pf_syncookies_cleanup(void); 2504 int pf_get_syncookies(struct pfioc_nv *); 2505 int pf_set_syncookies(struct pfioc_nv *); 2506 int pf_synflood_check(struct pf_pdesc *); 2507 void pf_syncookie_send(struct pf_pdesc *); 2508 bool pf_syncookie_check(struct pf_pdesc *); 2509 u_int8_t pf_syncookie_validate(struct pf_pdesc *); 2510 struct mbuf * pf_syncookie_recreate_syn(struct pf_pdesc *); 2511 2512 VNET_DECLARE(struct pf_kstatus, pf_status); 2513 #define V_pf_status VNET(pf_status) 2514 2515 struct pf_limit { 2516 uma_zone_t zone; 2517 u_int limit; 2518 }; 2519 VNET_DECLARE(struct pf_limit, pf_limits[PF_LIMIT_MAX]); 2520 #define V_pf_limits VNET(pf_limits) 2521 2522 #endif /* _KERNEL */ 2523 2524 #ifdef _KERNEL 2525 VNET_DECLARE(struct pf_kanchor_global, pf_anchors); 2526 #define V_pf_anchors VNET(pf_anchors) 2527 VNET_DECLARE(struct pf_kanchor, pf_main_anchor); 2528 #define V_pf_main_anchor VNET(pf_main_anchor) 2529 VNET_DECLARE(struct pf_keth_anchor_global, pf_keth_anchors); 2530 #define V_pf_keth_anchors VNET(pf_keth_anchors) 2531 #define pf_main_ruleset V_pf_main_anchor.ruleset 2532 2533 VNET_DECLARE(struct pf_keth_anchor, pf_main_keth_anchor); 2534 #define V_pf_main_keth_anchor VNET(pf_main_keth_anchor) 2535 VNET_DECLARE(struct pf_keth_ruleset*, pf_keth); 2536 #define V_pf_keth VNET(pf_keth) 2537 2538 void pf_init_kruleset(struct pf_kruleset *); 2539 void pf_init_keth(struct pf_keth_ruleset *); 2540 int pf_kanchor_setup(struct pf_krule *, 2541 const struct pf_kruleset *, const char *); 2542 int pf_kanchor_copyout(const struct pf_kruleset *, 2543 const struct pf_krule *, char *, size_t); 2544 int pf_kanchor_nvcopyout(const struct pf_kruleset *, 2545 const struct pf_krule *, nvlist_t *); 2546 void pf_kanchor_remove(struct pf_krule *); 2547 void pf_remove_if_empty_kruleset(struct pf_kruleset *); 2548 struct pf_kruleset *pf_find_kruleset(const char *); 2549 struct pf_kruleset *pf_find_or_create_kruleset(const char *); 2550 void pf_rs_initialize(void); 2551 2552 2553 struct pf_krule *pf_krule_alloc(void); 2554 2555 void pf_remove_if_empty_keth_ruleset( 2556 struct pf_keth_ruleset *); 2557 struct pf_keth_ruleset *pf_find_keth_ruleset(const char *); 2558 struct pf_keth_anchor *pf_find_keth_anchor(const char *); 2559 int pf_keth_anchor_setup(struct pf_keth_rule *, 2560 const struct pf_keth_ruleset *, const char *); 2561 int pf_keth_anchor_nvcopyout( 2562 const struct pf_keth_ruleset *, 2563 const struct pf_keth_rule *, nvlist_t *); 2564 struct pf_keth_ruleset *pf_find_or_create_keth_ruleset(const char *); 2565 void pf_keth_anchor_remove(struct pf_keth_rule *); 2566 2567 int pf_ioctl_getrules(struct pfioc_rule *); 2568 int pf_ioctl_addrule(struct pf_krule *, uint32_t, 2569 uint32_t, const char *, const char *, uid_t uid, 2570 pid_t); 2571 void pf_ioctl_clear_status(void); 2572 int pf_ioctl_get_timeout(int, int *); 2573 int pf_ioctl_set_timeout(int, int, int *); 2574 int pf_ioctl_get_limit(int, unsigned int *); 2575 int pf_ioctl_set_limit(int, unsigned int, unsigned int *); 2576 int pf_ioctl_begin_addrs(uint32_t *); 2577 int pf_ioctl_add_addr(struct pfioc_pooladdr *); 2578 int pf_ioctl_get_addrs(struct pfioc_pooladdr *); 2579 int pf_ioctl_get_addr(struct pfioc_pooladdr *); 2580 int pf_ioctl_get_rulesets(struct pfioc_ruleset *); 2581 int pf_ioctl_get_ruleset(struct pfioc_ruleset *); 2582 2583 void pf_krule_free(struct pf_krule *); 2584 void pf_krule_clear_counters(struct pf_krule *); 2585 void pf_addr_copyout(struct pf_addr_wrap *); 2586 #endif 2587 2588 /* The fingerprint functions can be linked into userland programs (tcpdump) */ 2589 int pf_osfp_add(struct pf_osfp_ioctl *); 2590 #ifdef _KERNEL 2591 struct pf_osfp_enlist * 2592 pf_osfp_fingerprint(struct pf_pdesc *, const struct tcphdr *); 2593 #endif /* _KERNEL */ 2594 void pf_osfp_flush(void); 2595 int pf_osfp_get(struct pf_osfp_ioctl *); 2596 int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t); 2597 2598 #ifdef _KERNEL 2599 void pf_print_host(struct pf_addr *, u_int16_t, sa_family_t); 2600 2601 void pf_step_into_anchor(struct pf_kanchor_stackframe *, int *, 2602 struct pf_kruleset **, int, struct pf_krule **, 2603 struct pf_krule **, int *); 2604 int pf_step_out_of_anchor(struct pf_kanchor_stackframe *, int *, 2605 struct pf_kruleset **, int, struct pf_krule **, 2606 struct pf_krule **, int *); 2607 void pf_step_into_keth_anchor(struct pf_keth_anchor_stackframe *, 2608 int *, struct pf_keth_ruleset **, 2609 struct pf_keth_rule **, struct pf_keth_rule **, 2610 int *); 2611 int pf_step_out_of_keth_anchor(struct pf_keth_anchor_stackframe *, 2612 int *, struct pf_keth_ruleset **, 2613 struct pf_keth_rule **, struct pf_keth_rule **, 2614 int *); 2615 2616 u_short pf_map_addr(u_int8_t, struct pf_krule *, 2617 struct pf_addr *, struct pf_addr *, 2618 struct pfi_kkif **nkif, struct pf_addr *); 2619 u_short pf_map_addr_sn(u_int8_t, struct pf_krule *, 2620 struct pf_addr *, struct pf_addr *, 2621 struct pfi_kkif **nkif, struct pf_addr *, 2622 struct pf_ksrc_node **); 2623 u_short pf_get_translation(struct pf_pdesc *, 2624 int, struct pf_ksrc_node **, 2625 struct pf_state_key **, struct pf_state_key **, 2626 struct pf_addr *, struct pf_addr *, 2627 uint16_t, uint16_t, struct pf_kanchor_stackframe *, 2628 struct pf_krule **, 2629 struct pf_udp_mapping **udp_mapping); 2630 2631 struct pf_state_key *pf_state_key_setup(struct pf_pdesc *, 2632 struct pf_addr *, struct pf_addr *, u_int16_t, u_int16_t); 2633 struct pf_state_key *pf_state_key_clone(const struct pf_state_key *); 2634 void pf_rule_to_actions(struct pf_krule *, 2635 struct pf_rule_actions *); 2636 int pf_normalize_mss(struct pf_pdesc *pd); 2637 #if defined(INET) || defined(INET6) 2638 void pf_scrub(struct pf_pdesc *); 2639 #endif 2640 2641 struct pfi_kkif *pf_kkif_create(int); 2642 void pf_kkif_free(struct pfi_kkif *); 2643 void pf_kkif_zero(struct pfi_kkif *); 2644 #endif /* _KERNEL */ 2645 2646 #endif /* _NET_PFVAR_H_ */ 2647