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); 333 334 struct pfi_dynaddr { 335 TAILQ_ENTRY(pfi_dynaddr) entry; 336 struct pf_addr pfid_addr4; 337 struct pf_addr pfid_mask4; 338 struct pf_addr pfid_addr6; 339 struct pf_addr pfid_mask6; 340 struct pfr_ktable *pfid_kt; 341 struct pfi_kkif *pfid_kif; 342 int pfid_net; /* mask or 128 */ 343 int pfid_acnt4; /* address count IPv4 */ 344 int pfid_acnt6; /* address count IPv6 */ 345 sa_family_t pfid_af; /* rule af */ 346 u_int8_t pfid_iflags; /* PFI_AFLAG_* */ 347 }; 348 349 /* 350 * Address manipulation macros 351 */ 352 #define HTONL(x) (x) = htonl((__uint32_t)(x)) 353 #define HTONS(x) (x) = htons((__uint16_t)(x)) 354 #define NTOHL(x) (x) = ntohl((__uint32_t)(x)) 355 #define NTOHS(x) (x) = ntohs((__uint16_t)(x)) 356 357 #define PF_NAME "pf" 358 359 #define PF_HASHROW_ASSERT(h) mtx_assert(&(h)->lock, MA_OWNED) 360 #define PF_HASHROW_LOCK(h) mtx_lock(&(h)->lock) 361 #define PF_HASHROW_UNLOCK(h) mtx_unlock(&(h)->lock) 362 363 #ifdef INVARIANTS 364 #define PF_STATE_LOCK(s) \ 365 do { \ 366 struct pf_kstate *_s = (s); \ 367 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(_s)]; \ 368 MPASS(_s->lock == &_ih->lock); \ 369 mtx_lock(_s->lock); \ 370 } while (0) 371 #define PF_STATE_UNLOCK(s) \ 372 do { \ 373 struct pf_kstate *_s = (s); \ 374 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(_s)]; \ 375 MPASS(_s->lock == &_ih->lock); \ 376 mtx_unlock(_s->lock); \ 377 } while (0) 378 #else 379 #define PF_STATE_LOCK(s) mtx_lock((s)->lock) 380 #define PF_STATE_UNLOCK(s) mtx_unlock((s)->lock) 381 #endif 382 383 #ifdef INVARIANTS 384 #define PF_STATE_LOCK_ASSERT(s) \ 385 do { \ 386 struct pf_kstate *_s = (s); \ 387 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(_s)]; \ 388 MPASS(_s->lock == &_ih->lock); \ 389 PF_HASHROW_ASSERT(_ih); \ 390 } while (0) 391 #else /* !INVARIANTS */ 392 #define PF_STATE_LOCK_ASSERT(s) do {} while (0) 393 #endif /* INVARIANTS */ 394 395 #ifdef INVARIANTS 396 #define PF_SRC_NODE_LOCK(sn) \ 397 do { \ 398 struct pf_ksrc_node *_sn = (sn); \ 399 struct pf_srchash *_sh = &V_pf_srchash[ \ 400 pf_hashsrc(&_sn->addr, _sn->af)]; \ 401 MPASS(_sn->lock == &_sh->lock); \ 402 mtx_lock(_sn->lock); \ 403 } while (0) 404 #define PF_SRC_NODE_UNLOCK(sn) \ 405 do { \ 406 struct pf_ksrc_node *_sn = (sn); \ 407 struct pf_srchash *_sh = &V_pf_srchash[ \ 408 pf_hashsrc(&_sn->addr, _sn->af)]; \ 409 MPASS(_sn->lock == &_sh->lock); \ 410 mtx_unlock(_sn->lock); \ 411 } while (0) 412 #else 413 #define PF_SRC_NODE_LOCK(sn) mtx_lock((sn)->lock) 414 #define PF_SRC_NODE_UNLOCK(sn) mtx_unlock((sn)->lock) 415 #endif 416 417 #ifdef INVARIANTS 418 #define PF_SRC_NODE_LOCK_ASSERT(sn) \ 419 do { \ 420 struct pf_ksrc_node *_sn = (sn); \ 421 struct pf_srchash *_sh = &V_pf_srchash[ \ 422 pf_hashsrc(&_sn->addr, _sn->af)]; \ 423 MPASS(_sn->lock == &_sh->lock); \ 424 PF_HASHROW_ASSERT(_sh); \ 425 } while (0) 426 #else /* !INVARIANTS */ 427 #define PF_SRC_NODE_LOCK_ASSERT(sn) do {} while (0) 428 #endif /* INVARIANTS */ 429 430 extern struct mtx_padalign pf_unlnkdrules_mtx; 431 #define PF_UNLNKDRULES_LOCK() mtx_lock(&pf_unlnkdrules_mtx) 432 #define PF_UNLNKDRULES_UNLOCK() mtx_unlock(&pf_unlnkdrules_mtx) 433 #define PF_UNLNKDRULES_ASSERT() mtx_assert(&pf_unlnkdrules_mtx, MA_OWNED) 434 435 extern struct sx pf_config_lock; 436 #define PF_CONFIG_LOCK() sx_xlock(&pf_config_lock) 437 #define PF_CONFIG_UNLOCK() sx_xunlock(&pf_config_lock) 438 #define PF_CONFIG_ASSERT() sx_assert(&pf_config_lock, SA_XLOCKED) 439 440 VNET_DECLARE(struct rmlock, pf_rules_lock); 441 #define V_pf_rules_lock VNET(pf_rules_lock) 442 443 #define PF_RULES_RLOCK_TRACKER struct rm_priotracker _pf_rules_tracker 444 #define PF_RULES_RLOCK() rm_rlock(&V_pf_rules_lock, &_pf_rules_tracker) 445 #define PF_RULES_RUNLOCK() rm_runlock(&V_pf_rules_lock, &_pf_rules_tracker) 446 #define PF_RULES_WLOCK() rm_wlock(&V_pf_rules_lock) 447 #define PF_RULES_WUNLOCK() rm_wunlock(&V_pf_rules_lock) 448 #define PF_RULES_WOWNED() rm_wowned(&V_pf_rules_lock) 449 #define PF_RULES_ASSERT() rm_assert(&V_pf_rules_lock, RA_LOCKED) 450 #define PF_RULES_RASSERT() rm_assert(&V_pf_rules_lock, RA_RLOCKED) 451 #define PF_RULES_WASSERT() rm_assert(&V_pf_rules_lock, RA_WLOCKED) 452 453 extern struct mtx_padalign pf_table_stats_lock; 454 #define PF_TABLE_STATS_LOCK() mtx_lock(&pf_table_stats_lock) 455 #define PF_TABLE_STATS_UNLOCK() mtx_unlock(&pf_table_stats_lock) 456 #define PF_TABLE_STATS_OWNED() mtx_owned(&pf_table_stats_lock) 457 #define PF_TABLE_STATS_ASSERT() mtx_assert(&pf_table_stats_lock, MA_OWNED) 458 459 extern struct sx pf_end_lock; 460 461 #define PF_MODVER 1 462 #define PFLOG_MODVER 1 463 #define PFSYNC_MODVER 1 464 465 #define PFLOG_MINVER 1 466 #define PFLOG_PREFVER PFLOG_MODVER 467 #define PFLOG_MAXVER 1 468 #define PFSYNC_MINVER 1 469 #define PFSYNC_PREFVER PFSYNC_MODVER 470 #define PFSYNC_MAXVER 1 471 472 #ifdef INET 473 #ifndef INET6 474 #define PF_INET_ONLY 475 #endif /* ! INET6 */ 476 #endif /* INET */ 477 478 #ifdef INET6 479 #ifndef INET 480 #define PF_INET6_ONLY 481 #endif /* ! INET */ 482 #endif /* INET6 */ 483 484 #ifdef INET 485 #ifdef INET6 486 #define PF_INET_INET6 487 #endif /* INET6 */ 488 #endif /* INET */ 489 490 #else 491 492 #define PF_INET_INET6 493 494 #endif /* _KERNEL */ 495 496 /* Both IPv4 and IPv6 */ 497 #ifdef PF_INET_INET6 498 499 #define PF_AEQ(a, b, c) \ 500 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \ 501 (c == AF_INET6 && (a)->addr32[3] == (b)->addr32[3] && \ 502 (a)->addr32[2] == (b)->addr32[2] && \ 503 (a)->addr32[1] == (b)->addr32[1] && \ 504 (a)->addr32[0] == (b)->addr32[0])) \ 505 506 #define PF_ANEQ(a, b, c) \ 507 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \ 508 (c == AF_INET6 && ((a)->addr32[0] != (b)->addr32[0] || \ 509 (a)->addr32[1] != (b)->addr32[1] || \ 510 (a)->addr32[2] != (b)->addr32[2] || \ 511 (a)->addr32[3] != (b)->addr32[3]))) \ 512 513 #define PF_AZERO(a, c) \ 514 ((c == AF_INET && !(a)->addr32[0]) || \ 515 (c == AF_INET6 && !(a)->addr32[0] && !(a)->addr32[1] && \ 516 !(a)->addr32[2] && !(a)->addr32[3] )) \ 517 518 #define PF_MATCHA(n, a, m, b, f) \ 519 pf_match_addr(n, a, m, b, f) 520 521 #define PF_ACPY(a, b, f) \ 522 pf_addrcpy(a, b, f) 523 524 #define PF_AINC(a, f) \ 525 pf_addr_inc(a, f) 526 527 #define PF_POOLMASK(a, b, c, d, f) \ 528 pf_poolmask(a, b, c, d, f) 529 530 #else 531 532 /* Just IPv6 */ 533 534 #ifdef PF_INET6_ONLY 535 536 #define PF_AEQ(a, b, c) \ 537 ((a)->addr32[3] == (b)->addr32[3] && \ 538 (a)->addr32[2] == (b)->addr32[2] && \ 539 (a)->addr32[1] == (b)->addr32[1] && \ 540 (a)->addr32[0] == (b)->addr32[0]) \ 541 542 #define PF_ANEQ(a, b, c) \ 543 ((a)->addr32[3] != (b)->addr32[3] || \ 544 (a)->addr32[2] != (b)->addr32[2] || \ 545 (a)->addr32[1] != (b)->addr32[1] || \ 546 (a)->addr32[0] != (b)->addr32[0]) \ 547 548 #define PF_AZERO(a, c) \ 549 (!(a)->addr32[0] && \ 550 !(a)->addr32[1] && \ 551 !(a)->addr32[2] && \ 552 !(a)->addr32[3] ) \ 553 554 #define PF_MATCHA(n, a, m, b, f) \ 555 pf_match_addr(n, a, m, b, f) 556 557 #define PF_ACPY(a, b, f) \ 558 pf_addrcpy(a, b, f) 559 560 #define PF_AINC(a, f) \ 561 pf_addr_inc(a, f) 562 563 #define PF_POOLMASK(a, b, c, d, f) \ 564 pf_poolmask(a, b, c, d, f) 565 566 #else 567 568 /* Just IPv4 */ 569 #ifdef PF_INET_ONLY 570 571 #define PF_AEQ(a, b, c) \ 572 ((a)->addr32[0] == (b)->addr32[0]) 573 574 #define PF_ANEQ(a, b, c) \ 575 ((a)->addr32[0] != (b)->addr32[0]) 576 577 #define PF_AZERO(a, c) \ 578 (!(a)->addr32[0]) 579 580 #define PF_MATCHA(n, a, m, b, f) \ 581 pf_match_addr(n, a, m, b, f) 582 583 #define PF_ACPY(a, b, f) \ 584 (a)->v4.s_addr = (b)->v4.s_addr 585 586 #define PF_AINC(a, f) \ 587 do { \ 588 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \ 589 } while (0) 590 591 #define PF_POOLMASK(a, b, c, d, f) \ 592 do { \ 593 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \ 594 (((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \ 595 } while (0) 596 597 #endif /* PF_INET_ONLY */ 598 #endif /* PF_INET6_ONLY */ 599 #endif /* PF_INET_INET6 */ 600 601 /* 602 * XXX callers not FIB-aware in our version of pf yet. 603 * OpenBSD fixed it later it seems, 2010/05/07 13:33:16 claudio. 604 */ 605 #define PF_MISMATCHAW(aw, x, af, neg, ifp, rtid) \ 606 ( \ 607 (((aw)->type == PF_ADDR_NOROUTE && \ 608 pf_routable((x), (af), NULL, (rtid))) || \ 609 (((aw)->type == PF_ADDR_URPFFAILED && (ifp) != NULL && \ 610 pf_routable((x), (af), (ifp), (rtid))) || \ 611 ((aw)->type == PF_ADDR_TABLE && \ 612 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \ 613 ((aw)->type == PF_ADDR_DYNIFTL && \ 614 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \ 615 ((aw)->type == PF_ADDR_RANGE && \ 616 !pf_match_addr_range(&(aw)->v.a.addr, \ 617 &(aw)->v.a.mask, (x), (af))) || \ 618 ((aw)->type == PF_ADDR_ADDRMASK && \ 619 !PF_AZERO(&(aw)->v.a.mask, (af)) && \ 620 !PF_MATCHA(0, &(aw)->v.a.addr, \ 621 &(aw)->v.a.mask, (x), (af))))) != \ 622 (neg) \ 623 ) 624 625 #define PF_ALGNMNT(off) (((off) % 2) == 0) 626 627 #ifdef _KERNEL 628 629 struct pf_kpooladdr { 630 struct pf_addr_wrap addr; 631 TAILQ_ENTRY(pf_kpooladdr) entries; 632 char ifname[IFNAMSIZ]; 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 }; 649 650 struct pf_rule_actions { 651 struct pf_addr rt_addr; 652 struct pfi_kkif *rt_kif; 653 int32_t rtableid; 654 uint32_t flags; 655 uint16_t qid; 656 uint16_t pqid; 657 uint16_t max_mss; 658 uint16_t dnpipe; 659 uint16_t dnrpipe; /* Reverse direction pipe */ 660 uint8_t log; 661 uint8_t set_tos; 662 uint8_t min_ttl; 663 uint8_t set_prio[2]; 664 uint8_t rt; 665 }; 666 667 union pf_keth_rule_ptr { 668 struct pf_keth_rule *ptr; 669 uint32_t nr; 670 }; 671 672 struct pf_keth_rule_addr { 673 uint8_t addr[ETHER_ADDR_LEN]; 674 uint8_t mask[ETHER_ADDR_LEN]; 675 bool neg; 676 uint8_t isset; 677 }; 678 679 struct pf_keth_anchor; 680 681 TAILQ_HEAD(pf_keth_ruleq, pf_keth_rule); 682 683 struct pf_keth_ruleset { 684 struct pf_keth_ruleq rules[2]; 685 struct pf_keth_rules { 686 struct pf_keth_ruleq *rules; 687 int open; 688 uint32_t ticket; 689 } active, inactive; 690 struct epoch_context epoch_ctx; 691 struct vnet *vnet; 692 struct pf_keth_anchor *anchor; 693 }; 694 695 RB_HEAD(pf_keth_anchor_global, pf_keth_anchor); 696 RB_HEAD(pf_keth_anchor_node, pf_keth_anchor); 697 struct pf_keth_anchor { 698 RB_ENTRY(pf_keth_anchor) entry_node; 699 RB_ENTRY(pf_keth_anchor) entry_global; 700 struct pf_keth_anchor *parent; 701 struct pf_keth_anchor_node children; 702 char name[PF_ANCHOR_NAME_SIZE]; 703 char path[MAXPATHLEN]; 704 struct pf_keth_ruleset ruleset; 705 int refcnt; /* anchor rules */ 706 uint8_t anchor_relative; 707 uint8_t anchor_wildcard; 708 }; 709 RB_PROTOTYPE(pf_keth_anchor_node, pf_keth_anchor, entry_node, 710 pf_keth_anchor_compare); 711 RB_PROTOTYPE(pf_keth_anchor_global, pf_keth_anchor, entry_global, 712 pf_keth_anchor_compare); 713 714 struct pf_keth_rule { 715 #define PFE_SKIP_IFP 0 716 #define PFE_SKIP_DIR 1 717 #define PFE_SKIP_PROTO 2 718 #define PFE_SKIP_SRC_ADDR 3 719 #define PFE_SKIP_DST_ADDR 4 720 #define PFE_SKIP_SRC_IP_ADDR 5 721 #define PFE_SKIP_DST_IP_ADDR 6 722 #define PFE_SKIP_COUNT 7 723 union pf_keth_rule_ptr skip[PFE_SKIP_COUNT]; 724 725 TAILQ_ENTRY(pf_keth_rule) entries; 726 727 struct pf_keth_anchor *anchor; 728 u_int8_t anchor_relative; 729 u_int8_t anchor_wildcard; 730 731 uint32_t nr; 732 733 bool quick; 734 735 /* Filter */ 736 char ifname[IFNAMSIZ]; 737 struct pfi_kkif *kif; 738 bool ifnot; 739 uint8_t direction; 740 uint16_t proto; 741 struct pf_keth_rule_addr src, dst; 742 struct pf_rule_addr ipsrc, ipdst; 743 char match_tagname[PF_TAG_NAME_SIZE]; 744 uint16_t match_tag; 745 bool match_tag_not; 746 747 748 /* Stats */ 749 counter_u64_t evaluations; 750 counter_u64_t packets[2]; 751 counter_u64_t bytes[2]; 752 time_t *timestamp; 753 754 /* Action */ 755 char qname[PF_QNAME_SIZE]; 756 int qid; 757 char tagname[PF_TAG_NAME_SIZE]; 758 uint16_t tag; 759 char bridge_to_name[IFNAMSIZ]; 760 struct pfi_kkif *bridge_to; 761 uint8_t action; 762 uint16_t dnpipe; 763 uint32_t dnflags; 764 765 char label[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE]; 766 uint32_t ridentifier; 767 }; 768 769 RB_HEAD(pf_krule_global, pf_krule); 770 RB_PROTOTYPE(pf_krule_global, pf_krule, entry_global, pf_krule_compare); 771 772 struct pf_krule { 773 struct pf_rule_addr src; 774 struct pf_rule_addr dst; 775 struct pf_krule *skip[PF_SKIP_COUNT]; 776 char label[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE]; 777 uint32_t ridentifier; 778 char ifname[IFNAMSIZ]; 779 char rcv_ifname[IFNAMSIZ]; 780 char qname[PF_QNAME_SIZE]; 781 char pqname[PF_QNAME_SIZE]; 782 char tagname[PF_TAG_NAME_SIZE]; 783 char match_tagname[PF_TAG_NAME_SIZE]; 784 785 char overload_tblname[PF_TABLE_NAME_SIZE]; 786 787 TAILQ_ENTRY(pf_krule) entries; 788 struct pf_kpool nat; 789 struct pf_kpool rdr; 790 struct pf_kpool route; 791 792 struct pf_counter_u64 evaluations; 793 struct pf_counter_u64 packets[2]; 794 struct pf_counter_u64 bytes[2]; 795 time_t *timestamp; 796 797 struct pfi_kkif *kif; 798 struct pfi_kkif *rcv_kif; 799 struct pf_kanchor *anchor; 800 struct pfr_ktable *overload_tbl; 801 802 pf_osfp_t os_fingerprint; 803 804 int32_t rtableid; 805 u_int32_t timeout[PFTM_MAX]; 806 u_int32_t max_states; 807 u_int32_t max_src_nodes; 808 u_int32_t max_src_states; 809 u_int32_t max_src_conn; 810 struct { 811 u_int32_t limit; 812 u_int32_t seconds; 813 } max_src_conn_rate; 814 u_int16_t qid; 815 u_int16_t pqid; 816 u_int16_t dnpipe; 817 u_int16_t dnrpipe; 818 u_int32_t free_flags; 819 u_int32_t nr; 820 u_int32_t prob; 821 uid_t cuid; 822 pid_t cpid; 823 824 counter_u64_t states_cur; 825 counter_u64_t states_tot; 826 counter_u64_t src_nodes; 827 828 u_int16_t return_icmp; 829 u_int16_t return_icmp6; 830 u_int16_t max_mss; 831 u_int16_t tag; 832 u_int16_t match_tag; 833 u_int16_t scrub_flags; 834 835 struct pf_rule_uid uid; 836 struct pf_rule_gid gid; 837 838 u_int32_t rule_flag; 839 uint32_t rule_ref; 840 u_int8_t action; 841 u_int8_t direction; 842 u_int8_t log; 843 u_int8_t logif; 844 u_int8_t quick; 845 u_int8_t ifnot; 846 u_int8_t match_tag_not; 847 u_int8_t natpass; 848 849 u_int8_t keep_state; 850 sa_family_t af; 851 u_int8_t proto; 852 u_int8_t type; 853 u_int8_t code; 854 u_int8_t flags; 855 u_int8_t flagset; 856 u_int8_t min_ttl; 857 u_int8_t allow_opts; 858 u_int8_t rt; 859 u_int8_t return_ttl; 860 u_int8_t tos; 861 u_int8_t set_tos; 862 u_int8_t anchor_relative; 863 u_int8_t anchor_wildcard; 864 865 u_int8_t flush; 866 u_int8_t prio; 867 u_int8_t set_prio[2]; 868 sa_family_t naf; 869 870 struct { 871 struct pf_addr addr; 872 u_int16_t port; 873 } divert; 874 u_int8_t md5sum[PF_MD5_DIGEST_LENGTH]; 875 RB_ENTRY(pf_krule) entry_global; 876 877 #ifdef PF_WANT_32_TO_64_COUNTER 878 LIST_ENTRY(pf_krule) allrulelist; 879 bool allrulelinked; 880 #endif 881 }; 882 883 struct pf_krule_item { 884 SLIST_ENTRY(pf_krule_item) entry; 885 struct pf_krule *r; 886 }; 887 888 SLIST_HEAD(pf_krule_slist, pf_krule_item); 889 890 struct pf_ksrc_node { 891 LIST_ENTRY(pf_ksrc_node) entry; 892 struct pf_addr addr; 893 struct pf_addr raddr; 894 struct pf_krule_slist match_rules; 895 struct pf_krule *rule; 896 struct pfi_kkif *rkif; 897 counter_u64_t bytes[2]; 898 counter_u64_t packets[2]; 899 u_int32_t states; 900 u_int32_t conn; 901 struct pf_threshold conn_rate; 902 u_int32_t creation; 903 u_int32_t expire; 904 sa_family_t af; 905 sa_family_t naf; 906 u_int8_t ruletype; 907 struct mtx *lock; 908 }; 909 #endif 910 911 struct pf_state_scrub { 912 struct timeval pfss_last; /* time received last packet */ 913 u_int32_t pfss_tsecr; /* last echoed timestamp */ 914 u_int32_t pfss_tsval; /* largest timestamp */ 915 u_int32_t pfss_tsval0; /* original timestamp */ 916 u_int16_t pfss_flags; 917 #define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */ 918 #define PFSS_PAWS 0x0010 /* stricter PAWS checks */ 919 #define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */ 920 #define PFSS_DATA_TS 0x0040 /* timestamp on data packets */ 921 #define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */ 922 u_int8_t pfss_ttl; /* stashed TTL */ 923 u_int8_t pad; 924 union { 925 u_int32_t pfss_ts_mod; /* timestamp modulation */ 926 u_int32_t pfss_v_tag; /* SCTP verification tag */ 927 }; 928 }; 929 930 struct pf_state_host { 931 struct pf_addr addr; 932 u_int16_t port; 933 u_int16_t pad; 934 }; 935 936 struct pf_state_peer { 937 struct pf_state_scrub *scrub; /* state is scrubbed */ 938 u_int32_t seqlo; /* Max sequence number sent */ 939 u_int32_t seqhi; /* Max the other end ACKd + win */ 940 u_int32_t seqdiff; /* Sequence number modulator */ 941 u_int16_t max_win; /* largest window (pre scaling) */ 942 u_int16_t mss; /* Maximum segment size option */ 943 u_int8_t state; /* active state level */ 944 u_int8_t wscale; /* window scaling factor */ 945 u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */ 946 u_int8_t pad[1]; 947 }; 948 949 /* Keep synced with struct pf_udp_endpoint. */ 950 struct pf_udp_endpoint_cmp { 951 struct pf_addr addr; 952 uint16_t port; 953 sa_family_t af; 954 uint8_t pad[1]; 955 }; 956 957 struct pf_udp_endpoint { 958 struct pf_addr addr; 959 uint16_t port; 960 sa_family_t af; 961 uint8_t pad[1]; 962 963 struct pf_udp_mapping *mapping; 964 LIST_ENTRY(pf_udp_endpoint) entry; 965 }; 966 967 struct pf_udp_mapping { 968 struct pf_udp_endpoint endpoints[2]; 969 u_int refs; 970 }; 971 972 /* Keep synced with struct pf_state_key. */ 973 struct pf_state_key_cmp { 974 struct pf_addr addr[2]; 975 u_int16_t port[2]; 976 sa_family_t af; 977 u_int8_t proto; 978 u_int8_t pad[2]; 979 }; 980 981 struct pf_state_key { 982 struct pf_addr addr[2]; 983 u_int16_t port[2]; 984 sa_family_t af; 985 u_int8_t proto; 986 u_int8_t pad[2]; 987 988 LIST_ENTRY(pf_state_key) entry; 989 TAILQ_HEAD(, pf_kstate) states[2]; 990 }; 991 992 #define PF_REVERSED_KEY(key, family) \ 993 ((key[PF_SK_WIRE]->af != key[PF_SK_STACK]->af) && \ 994 (key[PF_SK_WIRE]->af != (family))) 995 996 /* Keep synced with struct pf_kstate. */ 997 struct pf_state_cmp { 998 u_int64_t id; 999 u_int32_t creatorid; 1000 u_int8_t direction; 1001 u_int8_t pad[3]; 1002 }; 1003 1004 struct pf_state_scrub_export { 1005 uint16_t pfss_flags; 1006 uint8_t pfss_ttl; /* stashed TTL */ 1007 #define PF_SCRUB_FLAG_VALID 0x01 1008 uint8_t scrub_flag; 1009 uint32_t pfss_ts_mod; /* timestamp modulation */ 1010 }; 1011 1012 struct pf_state_key_export { 1013 struct pf_addr addr[2]; 1014 uint16_t port[2]; 1015 }; 1016 1017 struct pf_state_peer_export { 1018 struct pf_state_scrub_export scrub; /* state is scrubbed */ 1019 uint32_t seqlo; /* Max sequence number sent */ 1020 uint32_t seqhi; /* Max the other end ACKd + win */ 1021 uint32_t seqdiff; /* Sequence number modulator */ 1022 uint16_t max_win; /* largest window (pre scaling) */ 1023 uint16_t mss; /* Maximum segment size option */ 1024 uint8_t state; /* active state level */ 1025 uint8_t wscale; /* window scaling factor */ 1026 uint8_t dummy[6]; 1027 }; 1028 _Static_assert(sizeof(struct pf_state_peer_export) == 32, "size incorrect"); 1029 1030 struct pf_state_export { 1031 uint64_t version; 1032 #define PF_STATE_VERSION 20230404 1033 uint64_t id; 1034 char ifname[IFNAMSIZ]; 1035 char orig_ifname[IFNAMSIZ]; 1036 struct pf_state_key_export key[2]; 1037 struct pf_state_peer_export src; 1038 struct pf_state_peer_export dst; 1039 struct pf_addr rt_addr; 1040 uint32_t rule; 1041 uint32_t anchor; 1042 uint32_t nat_rule; 1043 uint32_t creation; 1044 uint32_t expire; 1045 uint32_t spare0; 1046 uint64_t packets[2]; 1047 uint64_t bytes[2]; 1048 uint32_t creatorid; 1049 uint32_t spare1; 1050 sa_family_t af; 1051 uint8_t proto; 1052 uint8_t direction; 1053 uint8_t log; 1054 uint8_t state_flags_compat; 1055 uint8_t timeout; 1056 uint8_t sync_flags; 1057 uint8_t updates; 1058 uint16_t state_flags; 1059 uint16_t qid; 1060 uint16_t pqid; 1061 uint16_t dnpipe; 1062 uint16_t dnrpipe; 1063 int32_t rtableid; 1064 uint8_t min_ttl; 1065 uint8_t set_tos; 1066 uint16_t max_mss; 1067 uint8_t set_prio[2]; 1068 uint8_t rt; 1069 char rt_ifname[IFNAMSIZ]; 1070 1071 uint8_t spare[72]; 1072 }; 1073 _Static_assert(sizeof(struct pf_state_export) == 384, "size incorrect"); 1074 1075 #ifdef _KERNEL 1076 struct pf_kstate { 1077 /* 1078 * Area shared with pf_state_cmp 1079 */ 1080 u_int64_t id; 1081 u_int32_t creatorid; 1082 u_int8_t direction; 1083 u_int8_t pad[3]; 1084 /* 1085 * end of the area 1086 */ 1087 1088 u_int16_t state_flags; 1089 u_int8_t timeout; 1090 u_int8_t sync_state; /* PFSYNC_S_x */ 1091 u_int8_t sync_updates; /* XXX */ 1092 u_int refs; 1093 struct mtx *lock; 1094 TAILQ_ENTRY(pf_kstate) sync_list; 1095 TAILQ_ENTRY(pf_kstate) key_list[2]; 1096 LIST_ENTRY(pf_kstate) entry; 1097 struct pf_state_peer src; 1098 struct pf_state_peer dst; 1099 struct pf_krule_slist match_rules; 1100 struct pf_krule *rule; 1101 struct pf_krule *anchor; 1102 struct pf_krule *nat_rule; 1103 struct pf_state_key *key[2]; /* addresses stack and wire */ 1104 struct pf_udp_mapping *udp_mapping; 1105 struct pfi_kkif *kif; 1106 struct pfi_kkif *orig_kif; /* The real kif, even if we're a floating state (i.e. if == V_pfi_all). */ 1107 struct pf_ksrc_node *src_node; 1108 struct pf_ksrc_node *nat_src_node; 1109 u_int64_t packets[2]; 1110 u_int64_t bytes[2]; 1111 u_int64_t creation; 1112 u_int64_t expire; 1113 u_int32_t pfsync_time; 1114 struct pf_rule_actions act; 1115 u_int16_t tag; 1116 u_int16_t if_index_in; 1117 u_int16_t if_index_out; 1118 }; 1119 1120 /* 1121 * Size <= fits 11 objects per page on LP64. Try to not grow the struct beyond that. 1122 */ 1123 _Static_assert(sizeof(struct pf_kstate) <= 372, "pf_kstate size crosses 372 bytes"); 1124 #endif 1125 1126 /* 1127 * Unified state structures for pulling states out of the kernel 1128 * used by pfsync(4) and the pf(4) ioctl. 1129 */ 1130 struct pfsync_state_scrub { 1131 u_int16_t pfss_flags; 1132 u_int8_t pfss_ttl; /* stashed TTL */ 1133 #define PFSYNC_SCRUB_FLAG_VALID 0x01 1134 u_int8_t scrub_flag; 1135 u_int32_t pfss_ts_mod; /* timestamp modulation */ 1136 } __packed; 1137 1138 struct pfsync_state_peer { 1139 struct pfsync_state_scrub scrub; /* state is scrubbed */ 1140 u_int32_t seqlo; /* Max sequence number sent */ 1141 u_int32_t seqhi; /* Max the other end ACKd + win */ 1142 u_int32_t seqdiff; /* Sequence number modulator */ 1143 u_int16_t max_win; /* largest window (pre scaling) */ 1144 u_int16_t mss; /* Maximum segment size option */ 1145 u_int8_t state; /* active state level */ 1146 u_int8_t wscale; /* window scaling factor */ 1147 u_int8_t pad[6]; 1148 } __packed; 1149 1150 struct pfsync_state_key { 1151 struct pf_addr addr[2]; 1152 u_int16_t port[2]; 1153 }; 1154 1155 struct pfsync_state_1301 { 1156 u_int64_t id; 1157 char ifname[IFNAMSIZ]; 1158 struct pfsync_state_key key[2]; 1159 struct pfsync_state_peer src; 1160 struct pfsync_state_peer dst; 1161 struct pf_addr rt_addr; 1162 u_int32_t rule; 1163 u_int32_t anchor; 1164 u_int32_t nat_rule; 1165 u_int32_t creation; 1166 u_int32_t expire; 1167 u_int32_t packets[2][2]; 1168 u_int32_t bytes[2][2]; 1169 u_int32_t creatorid; 1170 sa_family_t af; 1171 u_int8_t proto; 1172 u_int8_t direction; 1173 u_int8_t __spare[2]; 1174 u_int8_t log; 1175 u_int8_t state_flags; 1176 u_int8_t timeout; 1177 u_int8_t sync_flags; 1178 u_int8_t updates; 1179 } __packed; 1180 1181 struct pfsync_state_1400 { 1182 /* The beginning of the struct is compatible with previous versions */ 1183 u_int64_t id; 1184 char ifname[IFNAMSIZ]; 1185 struct pfsync_state_key key[2]; 1186 struct pfsync_state_peer src; 1187 struct pfsync_state_peer dst; 1188 struct pf_addr rt_addr; 1189 u_int32_t rule; 1190 u_int32_t anchor; 1191 u_int32_t nat_rule; 1192 u_int32_t creation; 1193 u_int32_t expire; 1194 u_int32_t packets[2][2]; 1195 u_int32_t bytes[2][2]; 1196 u_int32_t creatorid; 1197 sa_family_t af; 1198 u_int8_t proto; 1199 u_int8_t direction; 1200 u_int16_t state_flags; 1201 u_int8_t log; 1202 u_int8_t __spare; 1203 u_int8_t timeout; 1204 u_int8_t sync_flags; 1205 u_int8_t updates; 1206 /* The rest is not */ 1207 u_int16_t qid; 1208 u_int16_t pqid; 1209 u_int16_t dnpipe; 1210 u_int16_t dnrpipe; 1211 int32_t rtableid; 1212 u_int8_t min_ttl; 1213 u_int8_t set_tos; 1214 u_int16_t max_mss; 1215 u_int8_t set_prio[2]; 1216 u_int8_t rt; 1217 char rt_ifname[IFNAMSIZ]; 1218 1219 } __packed; 1220 1221 union pfsync_state_union { 1222 struct pfsync_state_1301 pfs_1301; 1223 struct pfsync_state_1400 pfs_1400; 1224 } __packed; 1225 1226 #ifdef _KERNEL 1227 /* pfsync */ 1228 typedef int pfsync_state_import_t(union pfsync_state_union *, int, int); 1229 typedef void pfsync_insert_state_t(struct pf_kstate *); 1230 typedef void pfsync_update_state_t(struct pf_kstate *); 1231 typedef void pfsync_delete_state_t(struct pf_kstate *); 1232 typedef void pfsync_clear_states_t(u_int32_t, const char *); 1233 typedef int pfsync_defer_t(struct pf_kstate *, struct mbuf *); 1234 typedef void pfsync_detach_ifnet_t(struct ifnet *); 1235 typedef void pflow_export_state_t(const struct pf_kstate *); 1236 typedef bool pf_addr_filter_func_t(const sa_family_t, const struct pf_addr *); 1237 1238 VNET_DECLARE(pfsync_state_import_t *, pfsync_state_import_ptr); 1239 #define V_pfsync_state_import_ptr VNET(pfsync_state_import_ptr) 1240 VNET_DECLARE(pfsync_insert_state_t *, pfsync_insert_state_ptr); 1241 #define V_pfsync_insert_state_ptr VNET(pfsync_insert_state_ptr) 1242 VNET_DECLARE(pfsync_update_state_t *, pfsync_update_state_ptr); 1243 #define V_pfsync_update_state_ptr VNET(pfsync_update_state_ptr) 1244 VNET_DECLARE(pfsync_delete_state_t *, pfsync_delete_state_ptr); 1245 #define V_pfsync_delete_state_ptr VNET(pfsync_delete_state_ptr) 1246 VNET_DECLARE(pfsync_clear_states_t *, pfsync_clear_states_ptr); 1247 #define V_pfsync_clear_states_ptr VNET(pfsync_clear_states_ptr) 1248 VNET_DECLARE(pfsync_defer_t *, pfsync_defer_ptr); 1249 #define V_pfsync_defer_ptr VNET(pfsync_defer_ptr) 1250 VNET_DECLARE(pflow_export_state_t *, pflow_export_state_ptr); 1251 #define V_pflow_export_state_ptr VNET(pflow_export_state_ptr) 1252 extern pfsync_detach_ifnet_t *pfsync_detach_ifnet_ptr; 1253 1254 void pfsync_state_export(union pfsync_state_union *, 1255 struct pf_kstate *, int); 1256 void pf_state_export(struct pf_state_export *, 1257 struct pf_kstate *); 1258 1259 /* pflog */ 1260 struct pf_kruleset; 1261 struct pf_pdesc; 1262 typedef int pflog_packet_t(uint8_t, u_int8_t, 1263 struct pf_krule *, struct pf_krule *, struct pf_kruleset *, 1264 struct pf_pdesc *, int); 1265 extern pflog_packet_t *pflog_packet_ptr; 1266 1267 #endif /* _KERNEL */ 1268 1269 #define PFSYNC_FLAG_SRCNODE 0x04 1270 #define PFSYNC_FLAG_NATSRCNODE 0x08 1271 1272 /* for copies to/from network byte order */ 1273 /* ioctl interface also uses network byte order */ 1274 #define pf_state_peer_hton(s,d) do { \ 1275 (d)->seqlo = htonl((s)->seqlo); \ 1276 (d)->seqhi = htonl((s)->seqhi); \ 1277 (d)->seqdiff = htonl((s)->seqdiff); \ 1278 (d)->max_win = htons((s)->max_win); \ 1279 (d)->mss = htons((s)->mss); \ 1280 (d)->state = (s)->state; \ 1281 (d)->wscale = (s)->wscale; \ 1282 if ((s)->scrub) { \ 1283 (d)->scrub.pfss_flags = \ 1284 htons((s)->scrub->pfss_flags & PFSS_TIMESTAMP); \ 1285 (d)->scrub.pfss_ttl = (s)->scrub->pfss_ttl; \ 1286 (d)->scrub.pfss_ts_mod = htonl((s)->scrub->pfss_ts_mod);\ 1287 (d)->scrub.scrub_flag = PFSYNC_SCRUB_FLAG_VALID; \ 1288 } \ 1289 } while (0) 1290 1291 #define pf_state_peer_ntoh(s,d) do { \ 1292 (d)->seqlo = ntohl((s)->seqlo); \ 1293 (d)->seqhi = ntohl((s)->seqhi); \ 1294 (d)->seqdiff = ntohl((s)->seqdiff); \ 1295 (d)->max_win = ntohs((s)->max_win); \ 1296 (d)->mss = ntohs((s)->mss); \ 1297 (d)->state = (s)->state; \ 1298 (d)->wscale = (s)->wscale; \ 1299 if ((s)->scrub.scrub_flag == PFSYNC_SCRUB_FLAG_VALID && \ 1300 (d)->scrub != NULL) { \ 1301 (d)->scrub->pfss_flags = \ 1302 ntohs((s)->scrub.pfss_flags) & PFSS_TIMESTAMP; \ 1303 (d)->scrub->pfss_ttl = (s)->scrub.pfss_ttl; \ 1304 (d)->scrub->pfss_ts_mod = ntohl((s)->scrub.pfss_ts_mod);\ 1305 } \ 1306 } while (0) 1307 1308 #define pf_state_counter_hton(s,d) do { \ 1309 d[0] = htonl((s>>32)&0xffffffff); \ 1310 d[1] = htonl(s&0xffffffff); \ 1311 } while (0) 1312 1313 #define pf_state_counter_from_pfsync(s) \ 1314 (((u_int64_t)(s[0])<<32) | (u_int64_t)(s[1])) 1315 1316 #define pf_state_counter_ntoh(s,d) do { \ 1317 d = ntohl(s[0]); \ 1318 d = d<<32; \ 1319 d += ntohl(s[1]); \ 1320 } while (0) 1321 1322 TAILQ_HEAD(pf_krulequeue, pf_krule); 1323 1324 struct pf_kanchor; 1325 1326 struct pf_kruleset { 1327 struct { 1328 struct pf_krulequeue queues[2]; 1329 struct { 1330 struct pf_krulequeue *ptr; 1331 struct pf_krule **ptr_array; 1332 u_int32_t rcount; 1333 u_int32_t ticket; 1334 int open; 1335 struct pf_krule_global *tree; 1336 } active, inactive; 1337 } rules[PF_RULESET_MAX]; 1338 struct pf_kanchor *anchor; 1339 u_int32_t tticket; 1340 int tables; 1341 int topen; 1342 }; 1343 1344 RB_HEAD(pf_kanchor_global, pf_kanchor); 1345 RB_HEAD(pf_kanchor_node, pf_kanchor); 1346 struct pf_kanchor { 1347 RB_ENTRY(pf_kanchor) entry_global; 1348 RB_ENTRY(pf_kanchor) entry_node; 1349 struct pf_kanchor *parent; 1350 struct pf_kanchor_node children; 1351 char name[PF_ANCHOR_NAME_SIZE]; 1352 char path[MAXPATHLEN]; 1353 struct pf_kruleset ruleset; 1354 int refcnt; /* anchor rules */ 1355 }; 1356 RB_PROTOTYPE(pf_kanchor_global, pf_kanchor, entry_global, pf_anchor_compare); 1357 RB_PROTOTYPE(pf_kanchor_node, pf_kanchor, entry_node, pf_kanchor_compare); 1358 1359 #define PF_RESERVED_ANCHOR "_pf" 1360 1361 #define PFR_TFLAG_PERSIST 0x00000001 1362 #define PFR_TFLAG_CONST 0x00000002 1363 #define PFR_TFLAG_ACTIVE 0x00000004 1364 #define PFR_TFLAG_INACTIVE 0x00000008 1365 #define PFR_TFLAG_REFERENCED 0x00000010 1366 #define PFR_TFLAG_REFDANCHOR 0x00000020 1367 #define PFR_TFLAG_COUNTERS 0x00000040 1368 /* Adjust masks below when adding flags. */ 1369 #define PFR_TFLAG_USRMASK (PFR_TFLAG_PERSIST | \ 1370 PFR_TFLAG_CONST | \ 1371 PFR_TFLAG_COUNTERS) 1372 #define PFR_TFLAG_SETMASK (PFR_TFLAG_ACTIVE | \ 1373 PFR_TFLAG_INACTIVE | \ 1374 PFR_TFLAG_REFERENCED | \ 1375 PFR_TFLAG_REFDANCHOR) 1376 #define PFR_TFLAG_ALLMASK (PFR_TFLAG_PERSIST | \ 1377 PFR_TFLAG_CONST | \ 1378 PFR_TFLAG_ACTIVE | \ 1379 PFR_TFLAG_INACTIVE | \ 1380 PFR_TFLAG_REFERENCED | \ 1381 PFR_TFLAG_REFDANCHOR | \ 1382 PFR_TFLAG_COUNTERS) 1383 1384 struct pf_kanchor_stackframe; 1385 struct pf_keth_anchor_stackframe; 1386 1387 struct pfr_table { 1388 char pfrt_anchor[MAXPATHLEN]; 1389 char pfrt_name[PF_TABLE_NAME_SIZE]; 1390 u_int32_t pfrt_flags; 1391 u_int8_t pfrt_fback; 1392 }; 1393 1394 enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED, 1395 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE, 1396 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_NOCOUNT, PFR_FB_MAX }; 1397 1398 struct pfr_addr { 1399 union { 1400 struct in_addr _pfra_ip4addr; 1401 struct in6_addr _pfra_ip6addr; 1402 } pfra_u; 1403 u_int8_t pfra_af; 1404 u_int8_t pfra_net; 1405 u_int8_t pfra_not; 1406 u_int8_t pfra_fback; 1407 }; 1408 #define pfra_ip4addr pfra_u._pfra_ip4addr 1409 #define pfra_ip6addr pfra_u._pfra_ip6addr 1410 1411 enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX }; 1412 enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX }; 1413 enum { PFR_TYPE_PACKETS, PFR_TYPE_BYTES, PFR_TYPE_MAX }; 1414 #define PFR_NUM_COUNTERS (PFR_DIR_MAX * PFR_OP_ADDR_MAX * PFR_TYPE_MAX) 1415 #define PFR_OP_XPASS PFR_OP_ADDR_MAX 1416 1417 struct pfr_astats { 1418 struct pfr_addr pfras_a; 1419 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1420 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1421 long pfras_tzero; 1422 }; 1423 1424 enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX }; 1425 1426 struct pfr_tstats { 1427 struct pfr_table pfrts_t; 1428 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1429 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1430 u_int64_t pfrts_match; 1431 u_int64_t pfrts_nomatch; 1432 long pfrts_tzero; 1433 int pfrts_cnt; 1434 int pfrts_refcnt[PFR_REFCNT_MAX]; 1435 }; 1436 1437 #ifdef _KERNEL 1438 1439 struct pfr_kstate_counter { 1440 counter_u64_t pkc_pcpu; 1441 u_int64_t pkc_zero; 1442 }; 1443 1444 static inline int 1445 pfr_kstate_counter_init(struct pfr_kstate_counter *pfrc, int flags) 1446 { 1447 1448 pfrc->pkc_zero = 0; 1449 pfrc->pkc_pcpu = counter_u64_alloc(flags); 1450 if (pfrc->pkc_pcpu == NULL) 1451 return (ENOMEM); 1452 return (0); 1453 } 1454 1455 static inline void 1456 pfr_kstate_counter_deinit(struct pfr_kstate_counter *pfrc) 1457 { 1458 1459 counter_u64_free(pfrc->pkc_pcpu); 1460 } 1461 1462 static inline u_int64_t 1463 pfr_kstate_counter_fetch(struct pfr_kstate_counter *pfrc) 1464 { 1465 u_int64_t c; 1466 1467 c = counter_u64_fetch(pfrc->pkc_pcpu); 1468 c -= pfrc->pkc_zero; 1469 return (c); 1470 } 1471 1472 static inline void 1473 pfr_kstate_counter_zero(struct pfr_kstate_counter *pfrc) 1474 { 1475 u_int64_t c; 1476 1477 c = counter_u64_fetch(pfrc->pkc_pcpu); 1478 pfrc->pkc_zero = c; 1479 } 1480 1481 static inline void 1482 pfr_kstate_counter_add(struct pfr_kstate_counter *pfrc, int64_t n) 1483 { 1484 1485 counter_u64_add(pfrc->pkc_pcpu, n); 1486 } 1487 1488 struct pfr_ktstats { 1489 struct pfr_table pfrts_t; 1490 struct pfr_kstate_counter pfrkts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1491 struct pfr_kstate_counter pfrkts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1492 struct pfr_kstate_counter pfrkts_match; 1493 struct pfr_kstate_counter pfrkts_nomatch; 1494 long pfrkts_tzero; 1495 int pfrkts_cnt; 1496 int pfrkts_refcnt[PFR_REFCNT_MAX]; 1497 }; 1498 1499 #endif /* _KERNEL */ 1500 1501 #define pfrts_name pfrts_t.pfrt_name 1502 #define pfrts_flags pfrts_t.pfrt_flags 1503 1504 #ifndef _SOCKADDR_UNION_DEFINED 1505 #define _SOCKADDR_UNION_DEFINED 1506 union sockaddr_union { 1507 struct sockaddr sa; 1508 struct sockaddr_in sin; 1509 struct sockaddr_in6 sin6; 1510 }; 1511 #endif /* _SOCKADDR_UNION_DEFINED */ 1512 1513 struct pfr_kcounters { 1514 counter_u64_t pfrkc_counters; 1515 long pfrkc_tzero; 1516 }; 1517 #define pfr_kentry_counter(kc, dir, op, t) \ 1518 ((kc)->pfrkc_counters + \ 1519 (dir) * PFR_OP_ADDR_MAX * PFR_TYPE_MAX + (op) * PFR_TYPE_MAX + (t)) 1520 1521 #ifdef _KERNEL 1522 SLIST_HEAD(pfr_kentryworkq, pfr_kentry); 1523 struct pfr_kentry { 1524 struct radix_node pfrke_node[2]; 1525 union sockaddr_union pfrke_sa; 1526 SLIST_ENTRY(pfr_kentry) pfrke_workq; 1527 struct pfr_kcounters pfrke_counters; 1528 u_int8_t pfrke_af; 1529 u_int8_t pfrke_net; 1530 u_int8_t pfrke_not; 1531 u_int8_t pfrke_mark; 1532 }; 1533 1534 SLIST_HEAD(pfr_ktableworkq, pfr_ktable); 1535 RB_HEAD(pfr_ktablehead, pfr_ktable); 1536 struct pfr_ktable { 1537 struct pfr_ktstats pfrkt_kts; 1538 RB_ENTRY(pfr_ktable) pfrkt_tree; 1539 SLIST_ENTRY(pfr_ktable) pfrkt_workq; 1540 struct radix_node_head *pfrkt_ip4; 1541 struct radix_node_head *pfrkt_ip6; 1542 struct pfr_ktable *pfrkt_shadow; 1543 struct pfr_ktable *pfrkt_root; 1544 struct pf_kruleset *pfrkt_rs; 1545 long pfrkt_larg; 1546 int pfrkt_nflags; 1547 }; 1548 #define pfrkt_t pfrkt_kts.pfrts_t 1549 #define pfrkt_name pfrkt_t.pfrt_name 1550 #define pfrkt_anchor pfrkt_t.pfrt_anchor 1551 #define pfrkt_ruleset pfrkt_t.pfrt_ruleset 1552 #define pfrkt_flags pfrkt_t.pfrt_flags 1553 #define pfrkt_cnt pfrkt_kts.pfrkts_cnt 1554 #define pfrkt_refcnt pfrkt_kts.pfrkts_refcnt 1555 #define pfrkt_packets pfrkt_kts.pfrkts_packets 1556 #define pfrkt_bytes pfrkt_kts.pfrkts_bytes 1557 #define pfrkt_match pfrkt_kts.pfrkts_match 1558 #define pfrkt_nomatch pfrkt_kts.pfrkts_nomatch 1559 #define pfrkt_tzero pfrkt_kts.pfrkts_tzero 1560 #endif 1561 1562 #ifdef _KERNEL 1563 struct pfi_kkif { 1564 char pfik_name[IFNAMSIZ]; 1565 union { 1566 RB_ENTRY(pfi_kkif) _pfik_tree; 1567 LIST_ENTRY(pfi_kkif) _pfik_list; 1568 } _pfik_glue; 1569 #define pfik_tree _pfik_glue._pfik_tree 1570 #define pfik_list _pfik_glue._pfik_list 1571 struct pf_counter_u64 pfik_packets[2][2][2]; 1572 struct pf_counter_u64 pfik_bytes[2][2][2]; 1573 u_int32_t pfik_tzero; 1574 u_int pfik_flags; 1575 struct ifnet *pfik_ifp; 1576 struct ifg_group *pfik_group; 1577 u_int pfik_rulerefs; 1578 TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs; 1579 #ifdef PF_WANT_32_TO_64_COUNTER 1580 LIST_ENTRY(pfi_kkif) pfik_allkiflist; 1581 #endif 1582 }; 1583 #endif 1584 1585 #define PFI_IFLAG_REFS 0x0001 /* has state references */ 1586 #define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */ 1587 1588 #ifdef _KERNEL 1589 struct pf_sctp_multihome_job; 1590 TAILQ_HEAD(pf_sctp_multihome_jobs, pf_sctp_multihome_job); 1591 1592 struct pf_pdesc { 1593 struct { 1594 int done; 1595 uid_t uid; 1596 gid_t gid; 1597 } lookup; 1598 u_int64_t tot_len; /* Make Mickey money */ 1599 union pf_headers { 1600 struct tcphdr tcp; 1601 struct udphdr udp; 1602 struct sctphdr sctp; 1603 struct icmp icmp; 1604 #ifdef INET6 1605 struct icmp6_hdr icmp6; 1606 #endif /* INET6 */ 1607 char any[0]; 1608 } hdr; 1609 1610 struct pf_addr nsaddr; /* src address after NAT */ 1611 struct pf_addr ndaddr; /* dst address after NAT */ 1612 1613 struct pfi_kkif *kif; /* incomming interface */ 1614 struct mbuf *m; 1615 1616 struct pf_addr *src; /* src address */ 1617 struct pf_addr *dst; /* dst address */ 1618 u_int16_t *sport; 1619 u_int16_t *dport; 1620 u_int16_t osport; 1621 u_int16_t odport; 1622 u_int16_t nsport; /* src port after NAT */ 1623 u_int16_t ndport; /* dst port after NAT */ 1624 struct pf_mtag *pf_mtag; 1625 struct pf_rule_actions act; 1626 1627 u_int32_t off; /* protocol header offset */ 1628 u_int32_t hdrlen; /* protocol header length */ 1629 u_int32_t p_len; /* total length of protocol payload */ 1630 u_int32_t extoff; /* extentsion header offset */ 1631 u_int32_t fragoff; /* fragment header offset */ 1632 u_int32_t jumbolen; /* length from v6 jumbo header */ 1633 u_int32_t badopts; /* v4 options or v6 routing headers */ 1634 1635 u_int16_t *ip_sum; 1636 u_int16_t flags; /* Let SCRUB trigger behavior in 1637 * state code. Easier than tags */ 1638 #define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */ 1639 u_int16_t virtual_proto; 1640 #define PF_VPROTO_FRAGMENT 256 1641 sa_family_t af; 1642 sa_family_t naf; 1643 u_int8_t proto; 1644 u_int8_t tos; 1645 u_int8_t ttl; 1646 u_int8_t dir; /* direction */ 1647 u_int8_t sidx; /* key index for source */ 1648 u_int8_t didx; /* key index for destination */ 1649 #define PFDESC_SCTP_INIT 0x0001 1650 #define PFDESC_SCTP_INIT_ACK 0x0002 1651 #define PFDESC_SCTP_COOKIE 0x0004 1652 #define PFDESC_SCTP_COOKIE_ACK 0x0008 1653 #define PFDESC_SCTP_ABORT 0x0010 1654 #define PFDESC_SCTP_SHUTDOWN 0x0020 1655 #define PFDESC_SCTP_SHUTDOWN_COMPLETE 0x0040 1656 #define PFDESC_SCTP_DATA 0x0080 1657 #define PFDESC_SCTP_ASCONF 0x0100 1658 #define PFDESC_SCTP_HEARTBEAT 0x0200 1659 #define PFDESC_SCTP_HEARTBEAT_ACK 0x0400 1660 #define PFDESC_SCTP_OTHER 0x0800 1661 #define PFDESC_SCTP_ADD_IP 0x1000 1662 u_int16_t sctp_flags; 1663 u_int32_t sctp_initiate_tag; 1664 struct pf_krule *related_rule; 1665 1666 struct pf_sctp_multihome_jobs sctp_multihome_jobs; 1667 }; 1668 1669 struct pf_sctp_multihome_job { 1670 TAILQ_ENTRY(pf_sctp_multihome_job) next; 1671 struct pf_pdesc pd; 1672 struct pf_addr src; 1673 struct pf_addr dst; 1674 int op; 1675 }; 1676 1677 #endif 1678 1679 /* flags for RDR options */ 1680 #define PF_DPORT_RANGE 0x01 /* Dest port uses range */ 1681 #define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */ 1682 1683 /* UDP state enumeration */ 1684 #define PFUDPS_NO_TRAFFIC 0 1685 #define PFUDPS_SINGLE 1 1686 #define PFUDPS_MULTIPLE 2 1687 1688 #define PFUDPS_NSTATES 3 /* number of state levels */ 1689 1690 #define PFUDPS_NAMES { \ 1691 "NO_TRAFFIC", \ 1692 "SINGLE", \ 1693 "MULTIPLE", \ 1694 NULL \ 1695 } 1696 1697 /* Other protocol state enumeration */ 1698 #define PFOTHERS_NO_TRAFFIC 0 1699 #define PFOTHERS_SINGLE 1 1700 #define PFOTHERS_MULTIPLE 2 1701 1702 #define PFOTHERS_NSTATES 3 /* number of state levels */ 1703 1704 #define PFOTHERS_NAMES { \ 1705 "NO_TRAFFIC", \ 1706 "SINGLE", \ 1707 "MULTIPLE", \ 1708 NULL \ 1709 } 1710 1711 #define ACTION_SET(a, x) \ 1712 do { \ 1713 if ((a) != NULL) \ 1714 *(a) = (x); \ 1715 } while (0) 1716 1717 #define REASON_SET(a, x) \ 1718 do { \ 1719 if ((a) != NULL) \ 1720 *(a) = (x); \ 1721 if (x < PFRES_MAX) \ 1722 counter_u64_add(V_pf_status.counters[x], 1); \ 1723 } while (0) 1724 1725 enum pf_syncookies_mode { 1726 PF_SYNCOOKIES_NEVER = 0, 1727 PF_SYNCOOKIES_ALWAYS = 1, 1728 PF_SYNCOOKIES_ADAPTIVE = 2, 1729 PF_SYNCOOKIES_MODE_MAX = PF_SYNCOOKIES_ADAPTIVE 1730 }; 1731 1732 #define PF_SYNCOOKIES_HIWATPCT 25 1733 #define PF_SYNCOOKIES_LOWATPCT (PF_SYNCOOKIES_HIWATPCT / 2) 1734 1735 #ifdef _KERNEL 1736 struct pf_kstatus { 1737 counter_u64_t counters[PFRES_MAX]; /* reason for passing/dropping */ 1738 counter_u64_t lcounters[KLCNT_MAX]; /* limit counters */ 1739 struct pf_counter_u64 fcounters[FCNT_MAX]; /* state operation counters */ 1740 counter_u64_t scounters[SCNT_MAX]; /* src_node operation counters */ 1741 uint32_t states; 1742 uint32_t src_nodes; 1743 uint32_t running; 1744 uint32_t since; 1745 uint32_t debug; 1746 uint32_t hostid; 1747 char ifname[IFNAMSIZ]; 1748 uint8_t pf_chksum[PF_MD5_DIGEST_LENGTH]; 1749 bool keep_counters; 1750 enum pf_syncookies_mode syncookies_mode; 1751 bool syncookies_active; 1752 uint64_t syncookies_inflight[2]; 1753 uint32_t states_halfopen; 1754 uint32_t reass; 1755 }; 1756 #endif 1757 1758 struct pf_divert { 1759 union { 1760 struct in_addr ipv4; 1761 struct in6_addr ipv6; 1762 } addr; 1763 u_int16_t port; 1764 }; 1765 1766 #define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */ 1767 #define PFR_KENTRY_HIWAT 200000 /* Number of table entries */ 1768 1769 struct pf_fragment_tag { 1770 uint16_t ft_hdrlen; /* header length of reassembled pkt */ 1771 uint16_t ft_extoff; /* last extension header offset or 0 */ 1772 uint16_t ft_maxlen; /* maximum fragment payload length */ 1773 uint32_t ft_id; /* fragment id */ 1774 }; 1775 1776 /* 1777 * Limit the length of the fragment queue traversal. Remember 1778 * search entry points based on the fragment offset. 1779 */ 1780 #define PF_FRAG_ENTRY_POINTS 16 1781 1782 /* 1783 * The number of entries in the fragment queue must be limited 1784 * to avoid DoS by linear searching. Instead of a global limit, 1785 * use a limit per entry point. For large packets these sum up. 1786 */ 1787 #define PF_FRAG_ENTRY_LIMIT 64 1788 1789 /* 1790 * ioctl parameter structures 1791 */ 1792 1793 struct pfioc_pooladdr { 1794 u_int32_t action; 1795 u_int32_t ticket; 1796 u_int32_t nr; 1797 u_int32_t r_num; 1798 u_int8_t r_action; 1799 u_int8_t r_last; 1800 u_int8_t af; 1801 char anchor[MAXPATHLEN]; 1802 struct pf_pooladdr addr; 1803 }; 1804 1805 struct pfioc_rule { 1806 u_int32_t action; 1807 u_int32_t ticket; 1808 u_int32_t pool_ticket; 1809 u_int32_t nr; 1810 char anchor[MAXPATHLEN]; 1811 char anchor_call[MAXPATHLEN]; 1812 struct pf_rule rule; 1813 }; 1814 1815 struct pfioc_natlook { 1816 struct pf_addr saddr; 1817 struct pf_addr daddr; 1818 struct pf_addr rsaddr; 1819 struct pf_addr rdaddr; 1820 u_int16_t sport; 1821 u_int16_t dport; 1822 u_int16_t rsport; 1823 u_int16_t rdport; 1824 sa_family_t af; 1825 u_int8_t proto; 1826 u_int8_t direction; 1827 }; 1828 1829 struct pfioc_state { 1830 struct pfsync_state_1301 state; 1831 }; 1832 1833 struct pfioc_src_node_kill { 1834 sa_family_t psnk_af; 1835 struct pf_rule_addr psnk_src; 1836 struct pf_rule_addr psnk_dst; 1837 u_int psnk_killed; 1838 }; 1839 1840 #ifdef _KERNEL 1841 struct pf_kstate_kill { 1842 struct pf_state_cmp psk_pfcmp; 1843 sa_family_t psk_af; 1844 int psk_proto; 1845 struct pf_rule_addr psk_src; 1846 struct pf_rule_addr psk_dst; 1847 struct pf_rule_addr psk_rt_addr; 1848 char psk_ifname[IFNAMSIZ]; 1849 char psk_label[PF_RULE_LABEL_SIZE]; 1850 u_int psk_killed; 1851 bool psk_kill_match; 1852 bool psk_nat; 1853 }; 1854 #endif 1855 1856 struct pfioc_state_kill { 1857 struct pf_state_cmp psk_pfcmp; 1858 sa_family_t psk_af; 1859 int psk_proto; 1860 struct pf_rule_addr psk_src; 1861 struct pf_rule_addr psk_dst; 1862 char psk_ifname[IFNAMSIZ]; 1863 char psk_label[PF_RULE_LABEL_SIZE]; 1864 u_int psk_killed; 1865 }; 1866 1867 struct pfioc_states { 1868 int ps_len; 1869 union { 1870 void *ps_buf; 1871 struct pfsync_state_1301 *ps_states; 1872 }; 1873 }; 1874 1875 struct pfioc_states_v2 { 1876 int ps_len; 1877 uint64_t ps_req_version; 1878 union { 1879 void *ps_buf; 1880 struct pf_state_export *ps_states; 1881 }; 1882 }; 1883 1884 struct pfioc_src_nodes { 1885 int psn_len; 1886 union { 1887 void *psn_buf; 1888 struct pf_src_node *psn_src_nodes; 1889 }; 1890 }; 1891 1892 struct pfioc_if { 1893 char ifname[IFNAMSIZ]; 1894 }; 1895 1896 struct pfioc_tm { 1897 int timeout; 1898 int seconds; 1899 }; 1900 1901 struct pfioc_limit { 1902 int index; 1903 unsigned limit; 1904 }; 1905 1906 struct pfioc_altq_v0 { 1907 u_int32_t action; 1908 u_int32_t ticket; 1909 u_int32_t nr; 1910 struct pf_altq_v0 altq; 1911 }; 1912 1913 struct pfioc_altq_v1 { 1914 u_int32_t action; 1915 u_int32_t ticket; 1916 u_int32_t nr; 1917 /* 1918 * Placed here so code that only uses the above parameters can be 1919 * written entirely in terms of the v0 or v1 type. 1920 */ 1921 u_int32_t version; 1922 struct pf_altq_v1 altq; 1923 }; 1924 1925 /* 1926 * Latest version of struct pfioc_altq_vX. This must move in lock-step with 1927 * the latest version of struct pf_altq_vX as it has that struct as a 1928 * member. 1929 */ 1930 #define PFIOC_ALTQ_VERSION PF_ALTQ_VERSION 1931 1932 struct pfioc_qstats_v0 { 1933 u_int32_t ticket; 1934 u_int32_t nr; 1935 void *buf; 1936 int nbytes; 1937 u_int8_t scheduler; 1938 }; 1939 1940 struct pfioc_qstats_v1 { 1941 u_int32_t ticket; 1942 u_int32_t nr; 1943 void *buf; 1944 int nbytes; 1945 u_int8_t scheduler; 1946 /* 1947 * Placed here so code that only uses the above parameters can be 1948 * written entirely in terms of the v0 or v1 type. 1949 */ 1950 u_int32_t version; /* Requested version of stats struct */ 1951 }; 1952 1953 /* Latest version of struct pfioc_qstats_vX */ 1954 #define PFIOC_QSTATS_VERSION 1 1955 1956 struct pfioc_ruleset { 1957 u_int32_t nr; 1958 char path[MAXPATHLEN]; 1959 char name[PF_ANCHOR_NAME_SIZE]; 1960 }; 1961 1962 #define PF_RULESET_ALTQ (PF_RULESET_MAX) 1963 #define PF_RULESET_TABLE (PF_RULESET_MAX+1) 1964 #define PF_RULESET_ETH (PF_RULESET_MAX+2) 1965 struct pfioc_trans { 1966 int size; /* number of elements */ 1967 int esize; /* size of each element in bytes */ 1968 struct pfioc_trans_e { 1969 int rs_num; 1970 char anchor[MAXPATHLEN]; 1971 u_int32_t ticket; 1972 } *array; 1973 }; 1974 1975 #define PFR_FLAG_ATOMIC 0x00000001 /* unused */ 1976 #define PFR_FLAG_DUMMY 0x00000002 1977 #define PFR_FLAG_FEEDBACK 0x00000004 1978 #define PFR_FLAG_CLSTATS 0x00000008 1979 #define PFR_FLAG_ADDRSTOO 0x00000010 1980 #define PFR_FLAG_REPLACE 0x00000020 1981 #define PFR_FLAG_ALLRSETS 0x00000040 1982 #define PFR_FLAG_ALLMASK 0x0000007F 1983 #ifdef _KERNEL 1984 #define PFR_FLAG_USERIOCTL 0x10000000 1985 #endif 1986 1987 struct pfioc_table { 1988 struct pfr_table pfrio_table; 1989 void *pfrio_buffer; 1990 int pfrio_esize; 1991 int pfrio_size; 1992 int pfrio_size2; 1993 int pfrio_nadd; 1994 int pfrio_ndel; 1995 int pfrio_nchange; 1996 int pfrio_flags; 1997 u_int32_t pfrio_ticket; 1998 }; 1999 #define pfrio_exists pfrio_nadd 2000 #define pfrio_nzero pfrio_nadd 2001 #define pfrio_nmatch pfrio_nadd 2002 #define pfrio_naddr pfrio_size2 2003 #define pfrio_setflag pfrio_size2 2004 #define pfrio_clrflag pfrio_nadd 2005 2006 struct pfioc_iface { 2007 char pfiio_name[IFNAMSIZ]; 2008 void *pfiio_buffer; 2009 int pfiio_esize; 2010 int pfiio_size; 2011 int pfiio_nzero; 2012 int pfiio_flags; 2013 }; 2014 2015 /* 2016 * ioctl operations 2017 */ 2018 2019 #define DIOCSTART _IO ('D', 1) 2020 #define DIOCSTOP _IO ('D', 2) 2021 #define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule) 2022 #define DIOCADDRULENV _IOWR('D', 4, struct pfioc_nv) 2023 #define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule) 2024 #define DIOCGETRULENV _IOWR('D', 7, struct pfioc_nv) 2025 /* XXX cut 8 - 17 */ 2026 #define DIOCCLRSTATESNV _IOWR('D', 18, struct pfioc_nv) 2027 #define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state) 2028 #define DIOCGETSTATENV _IOWR('D', 19, struct pfioc_nv) 2029 #define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if) 2030 #define DIOCGETSTATUSNV _IOWR('D', 21, struct pfioc_nv) 2031 #define DIOCCLRSTATUS _IO ('D', 22) 2032 #define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook) 2033 #define DIOCSETDEBUG _IOWR('D', 24, u_int32_t) 2034 #ifdef COMPAT_FREEBSD14 2035 #define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states) 2036 #endif 2037 #define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule) 2038 /* XXX cut 26 - 28 */ 2039 #define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm) 2040 #define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm) 2041 #define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state) 2042 #define DIOCCLRRULECTRS _IO ('D', 38) 2043 #define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit) 2044 #define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit) 2045 #define DIOCKILLSTATESNV _IOWR('D', 41, struct pfioc_nv) 2046 #define DIOCSTARTALTQ _IO ('D', 42) 2047 #define DIOCSTOPALTQ _IO ('D', 43) 2048 #define DIOCADDALTQV0 _IOWR('D', 45, struct pfioc_altq_v0) 2049 #define DIOCADDALTQV1 _IOWR('D', 45, struct pfioc_altq_v1) 2050 #define DIOCGETALTQSV0 _IOWR('D', 47, struct pfioc_altq_v0) 2051 #define DIOCGETALTQSV1 _IOWR('D', 47, struct pfioc_altq_v1) 2052 #define DIOCGETALTQV0 _IOWR('D', 48, struct pfioc_altq_v0) 2053 #define DIOCGETALTQV1 _IOWR('D', 48, struct pfioc_altq_v1) 2054 #define DIOCCHANGEALTQV0 _IOWR('D', 49, struct pfioc_altq_v0) 2055 #define DIOCCHANGEALTQV1 _IOWR('D', 49, struct pfioc_altq_v1) 2056 #define DIOCGETQSTATSV0 _IOWR('D', 50, struct pfioc_qstats_v0) 2057 #define DIOCGETQSTATSV1 _IOWR('D', 50, struct pfioc_qstats_v1) 2058 #define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr) 2059 #define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr) 2060 #define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr) 2061 #define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr) 2062 #define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr) 2063 /* XXX cut 55 - 57 */ 2064 #define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset) 2065 #define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset) 2066 #define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table) 2067 #define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table) 2068 #define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table) 2069 #define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table) 2070 #define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table) 2071 #define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table) 2072 #define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table) 2073 #define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table) 2074 #define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table) 2075 #define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table) 2076 #define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table) 2077 #define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table) 2078 #define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table) 2079 #define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table) 2080 #define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table) 2081 #define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table) 2082 #define DIOCOSFPFLUSH _IO('D', 78) 2083 #define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl) 2084 #define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl) 2085 #define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans) 2086 #define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans) 2087 #define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans) 2088 #define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes) 2089 #define DIOCCLRSRCNODES _IO('D', 85) 2090 #define DIOCSETHOSTID _IOWR('D', 86, u_int32_t) 2091 #define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface) 2092 #define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface) 2093 #define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface) 2094 #define DIOCKILLSRCNODES _IOWR('D', 91, struct pfioc_src_node_kill) 2095 #define DIOCGIFSPEEDV0 _IOWR('D', 92, struct pf_ifspeed_v0) 2096 #define DIOCGIFSPEEDV1 _IOWR('D', 92, struct pf_ifspeed_v1) 2097 #ifdef COMPAT_FREEBSD14 2098 #define DIOCGETSTATESV2 _IOWR('D', 93, struct pfioc_states_v2) 2099 #endif 2100 #define DIOCGETSYNCOOKIES _IOWR('D', 94, struct pfioc_nv) 2101 #define DIOCSETSYNCOOKIES _IOWR('D', 95, struct pfioc_nv) 2102 #define DIOCKEEPCOUNTERS _IOWR('D', 96, struct pfioc_nv) 2103 #define DIOCKEEPCOUNTERS_FREEBSD13 _IOWR('D', 92, struct pfioc_nv) 2104 #define DIOCADDETHRULE _IOWR('D', 97, struct pfioc_nv) 2105 #define DIOCGETETHRULE _IOWR('D', 98, struct pfioc_nv) 2106 #define DIOCGETETHRULES _IOWR('D', 99, struct pfioc_nv) 2107 #define DIOCGETETHRULESETS _IOWR('D', 100, struct pfioc_nv) 2108 #define DIOCGETETHRULESET _IOWR('D', 101, struct pfioc_nv) 2109 #define DIOCSETREASS _IOWR('D', 102, u_int32_t) 2110 2111 struct pf_ifspeed_v0 { 2112 char ifname[IFNAMSIZ]; 2113 u_int32_t baudrate; 2114 }; 2115 2116 struct pf_ifspeed_v1 { 2117 char ifname[IFNAMSIZ]; 2118 u_int32_t baudrate32; 2119 /* layout identical to struct pf_ifspeed_v0 up to this point */ 2120 u_int64_t baudrate; 2121 }; 2122 2123 /* Latest version of struct pf_ifspeed_vX */ 2124 #define PF_IFSPEED_VERSION 1 2125 2126 /* 2127 * Compatibility and convenience macros 2128 */ 2129 #ifndef _KERNEL 2130 #ifdef PFIOC_USE_LATEST 2131 /* 2132 * Maintaining in-tree consumers of the ioctl interface is easier when that 2133 * code can be written in terms old names that refer to the latest interface 2134 * version as that reduces the required changes in the consumers to those 2135 * that are functionally necessary to accommodate a new interface version. 2136 */ 2137 #define pfioc_altq __CONCAT(pfioc_altq_v, PFIOC_ALTQ_VERSION) 2138 #define pfioc_qstats __CONCAT(pfioc_qstats_v, PFIOC_QSTATS_VERSION) 2139 #define pf_ifspeed __CONCAT(pf_ifspeed_v, PF_IFSPEED_VERSION) 2140 2141 #define DIOCADDALTQ __CONCAT(DIOCADDALTQV, PFIOC_ALTQ_VERSION) 2142 #define DIOCGETALTQS __CONCAT(DIOCGETALTQSV, PFIOC_ALTQ_VERSION) 2143 #define DIOCGETALTQ __CONCAT(DIOCGETALTQV, PFIOC_ALTQ_VERSION) 2144 #define DIOCCHANGEALTQ __CONCAT(DIOCCHANGEALTQV, PFIOC_ALTQ_VERSION) 2145 #define DIOCGETQSTATS __CONCAT(DIOCGETQSTATSV, PFIOC_QSTATS_VERSION) 2146 #define DIOCGIFSPEED __CONCAT(DIOCGIFSPEEDV, PF_IFSPEED_VERSION) 2147 #else 2148 /* 2149 * When building out-of-tree code that is written for the old interface, 2150 * such as may exist in ports for example, resolve the old struct tags and 2151 * ioctl command names to the v0 versions. 2152 */ 2153 #define pfioc_altq __CONCAT(pfioc_altq_v, 0) 2154 #define pfioc_qstats __CONCAT(pfioc_qstats_v, 0) 2155 #define pf_ifspeed __CONCAT(pf_ifspeed_v, 0) 2156 2157 #define DIOCADDALTQ __CONCAT(DIOCADDALTQV, 0) 2158 #define DIOCGETALTQS __CONCAT(DIOCGETALTQSV, 0) 2159 #define DIOCGETALTQ __CONCAT(DIOCGETALTQV, 0) 2160 #define DIOCCHANGEALTQ __CONCAT(DIOCCHANGEALTQV, 0) 2161 #define DIOCGETQSTATS __CONCAT(DIOCGETQSTATSV, 0) 2162 #define DIOCGIFSPEED __CONCAT(DIOCGIFSPEEDV, 0) 2163 #endif /* PFIOC_USE_LATEST */ 2164 #endif /* _KERNEL */ 2165 2166 #ifdef _KERNEL 2167 LIST_HEAD(pf_ksrc_node_list, pf_ksrc_node); 2168 struct pf_srchash { 2169 struct pf_ksrc_node_list nodes; 2170 struct mtx lock; 2171 }; 2172 2173 struct pf_keyhash { 2174 LIST_HEAD(, pf_state_key) keys; 2175 struct mtx lock; 2176 }; 2177 2178 struct pf_idhash { 2179 LIST_HEAD(, pf_kstate) states; 2180 struct mtx lock; 2181 }; 2182 2183 struct pf_udpendpointhash { 2184 LIST_HEAD(, pf_udp_endpoint) endpoints; 2185 /* refcont is synchronized on the source endpoint's row lock */ 2186 struct mtx lock; 2187 }; 2188 2189 extern u_long pf_ioctl_maxcount; 2190 VNET_DECLARE(u_long, pf_hashmask); 2191 #define V_pf_hashmask VNET(pf_hashmask) 2192 VNET_DECLARE(u_long, pf_srchashmask); 2193 #define V_pf_srchashmask VNET(pf_srchashmask) 2194 VNET_DECLARE(u_long, pf_udpendpointhashmask); 2195 #define V_pf_udpendpointhashmask VNET(pf_udpendpointhashmask) 2196 #define PF_HASHSIZ (131072) 2197 #define PF_SRCHASHSIZ (PF_HASHSIZ/4) 2198 #define PF_UDPENDHASHSIZ (PF_HASHSIZ/4) 2199 VNET_DECLARE(struct pf_keyhash *, pf_keyhash); 2200 VNET_DECLARE(struct pf_idhash *, pf_idhash); 2201 VNET_DECLARE(struct pf_udpendpointhash *, pf_udpendpointhash); 2202 #define V_pf_keyhash VNET(pf_keyhash) 2203 #define V_pf_idhash VNET(pf_idhash) 2204 #define V_pf_udpendpointhash VNET(pf_udpendpointhash) 2205 VNET_DECLARE(struct pf_srchash *, pf_srchash); 2206 #define V_pf_srchash VNET(pf_srchash) 2207 2208 #define PF_IDHASH(s) (be64toh((s)->id) % (V_pf_hashmask + 1)) 2209 2210 VNET_DECLARE(void *, pf_swi_cookie); 2211 #define V_pf_swi_cookie VNET(pf_swi_cookie) 2212 VNET_DECLARE(struct intr_event *, pf_swi_ie); 2213 #define V_pf_swi_ie VNET(pf_swi_ie) 2214 2215 VNET_DECLARE(struct unrhdr64, pf_stateid); 2216 #define V_pf_stateid VNET(pf_stateid) 2217 2218 TAILQ_HEAD(pf_altqqueue, pf_altq); 2219 VNET_DECLARE(struct pf_altqqueue, pf_altqs[4]); 2220 #define V_pf_altqs VNET(pf_altqs) 2221 VNET_DECLARE(struct pf_kpalist, pf_pabuf[3]); 2222 #define V_pf_pabuf VNET(pf_pabuf) 2223 2224 VNET_DECLARE(u_int32_t, ticket_altqs_active); 2225 #define V_ticket_altqs_active VNET(ticket_altqs_active) 2226 VNET_DECLARE(u_int32_t, ticket_altqs_inactive); 2227 #define V_ticket_altqs_inactive VNET(ticket_altqs_inactive) 2228 VNET_DECLARE(int, altqs_inactive_open); 2229 #define V_altqs_inactive_open VNET(altqs_inactive_open) 2230 VNET_DECLARE(u_int32_t, ticket_pabuf); 2231 #define V_ticket_pabuf VNET(ticket_pabuf) 2232 VNET_DECLARE(struct pf_altqqueue *, pf_altqs_active); 2233 #define V_pf_altqs_active VNET(pf_altqs_active) 2234 VNET_DECLARE(struct pf_altqqueue *, pf_altq_ifs_active); 2235 #define V_pf_altq_ifs_active VNET(pf_altq_ifs_active) 2236 VNET_DECLARE(struct pf_altqqueue *, pf_altqs_inactive); 2237 #define V_pf_altqs_inactive VNET(pf_altqs_inactive) 2238 VNET_DECLARE(struct pf_altqqueue *, pf_altq_ifs_inactive); 2239 #define V_pf_altq_ifs_inactive VNET(pf_altq_ifs_inactive) 2240 2241 VNET_DECLARE(struct pf_krulequeue, pf_unlinked_rules); 2242 #define V_pf_unlinked_rules VNET(pf_unlinked_rules) 2243 2244 #ifdef PF_WANT_32_TO_64_COUNTER 2245 LIST_HEAD(allkiflist_head, pfi_kkif); 2246 VNET_DECLARE(struct allkiflist_head, pf_allkiflist); 2247 #define V_pf_allkiflist VNET(pf_allkiflist) 2248 VNET_DECLARE(size_t, pf_allkifcount); 2249 #define V_pf_allkifcount VNET(pf_allkifcount) 2250 VNET_DECLARE(struct pfi_kkif *, pf_kifmarker); 2251 #define V_pf_kifmarker VNET(pf_kifmarker) 2252 2253 LIST_HEAD(allrulelist_head, pf_krule); 2254 VNET_DECLARE(struct allrulelist_head, pf_allrulelist); 2255 #define V_pf_allrulelist VNET(pf_allrulelist) 2256 VNET_DECLARE(size_t, pf_allrulecount); 2257 #define V_pf_allrulecount VNET(pf_allrulecount) 2258 VNET_DECLARE(struct pf_krule *, pf_rulemarker); 2259 #define V_pf_rulemarker VNET(pf_rulemarker) 2260 #endif 2261 2262 int pf_start(void); 2263 int pf_stop(void); 2264 void pf_initialize(void); 2265 void pf_mtag_initialize(void); 2266 void pf_mtag_cleanup(void); 2267 void pf_cleanup(void); 2268 2269 struct pf_mtag *pf_get_mtag(struct mbuf *); 2270 2271 extern void pf_calc_skip_steps(struct pf_krulequeue *); 2272 #ifdef ALTQ 2273 extern void pf_altq_ifnet_event(struct ifnet *, int); 2274 #endif 2275 VNET_DECLARE(uma_zone_t, pf_state_z); 2276 #define V_pf_state_z VNET(pf_state_z) 2277 VNET_DECLARE(uma_zone_t, pf_state_key_z); 2278 #define V_pf_state_key_z VNET(pf_state_key_z) 2279 VNET_DECLARE(uma_zone_t, pf_udp_mapping_z); 2280 #define V_pf_udp_mapping_z VNET(pf_udp_mapping_z) 2281 VNET_DECLARE(uma_zone_t, pf_state_scrub_z); 2282 #define V_pf_state_scrub_z VNET(pf_state_scrub_z) 2283 2284 extern void pf_purge_thread(void *); 2285 extern void pf_unload_vnet_purge(void); 2286 extern void pf_intr(void *); 2287 extern void pf_purge_expired_src_nodes(void); 2288 2289 extern int pf_unlink_state(struct pf_kstate *); 2290 extern int pf_state_insert(struct pfi_kkif *, 2291 struct pfi_kkif *, 2292 struct pf_state_key *, 2293 struct pf_state_key *, 2294 struct pf_kstate *); 2295 extern struct pf_kstate *pf_alloc_state(int); 2296 extern void pf_free_state(struct pf_kstate *); 2297 extern void pf_killstates(struct pf_kstate_kill *, 2298 unsigned int *); 2299 extern unsigned int pf_clear_states(const struct pf_kstate_kill *); 2300 2301 static __inline void 2302 pf_ref_state(struct pf_kstate *s) 2303 { 2304 2305 refcount_acquire(&s->refs); 2306 } 2307 2308 static __inline int 2309 pf_release_state(struct pf_kstate *s) 2310 { 2311 2312 if (refcount_release(&s->refs)) { 2313 pf_free_state(s); 2314 return (1); 2315 } else 2316 return (0); 2317 } 2318 2319 static __inline int 2320 pf_release_staten(struct pf_kstate *s, u_int n) 2321 { 2322 2323 if (refcount_releasen(&s->refs, n)) { 2324 pf_free_state(s); 2325 return (1); 2326 } else 2327 return (0); 2328 } 2329 2330 static __inline uint64_t 2331 pf_get_uptime(void) 2332 { 2333 struct timeval t; 2334 microuptime(&t); 2335 return ((t.tv_sec * 1000) + (t.tv_usec / 1000)); 2336 } 2337 2338 static __inline uint64_t 2339 pf_get_time(void) 2340 { 2341 struct timeval t; 2342 microtime(&t); 2343 return ((t.tv_sec * 1000) + (t.tv_usec / 1000)); 2344 } 2345 2346 extern struct pf_kstate *pf_find_state_byid(uint64_t, uint32_t); 2347 extern struct pf_kstate *pf_find_state_all( 2348 const struct pf_state_key_cmp *, 2349 u_int, int *); 2350 extern bool pf_find_state_all_exists( 2351 const struct pf_state_key_cmp *, 2352 u_int); 2353 extern struct pf_udp_mapping *pf_udp_mapping_find(struct pf_udp_endpoint_cmp 2354 *endpoint); 2355 extern struct pf_udp_mapping *pf_udp_mapping_create(sa_family_t af, 2356 struct pf_addr *src_addr, uint16_t src_port, 2357 struct pf_addr *nat_addr, uint16_t nat_port); 2358 extern int pf_udp_mapping_insert(struct pf_udp_mapping 2359 *mapping); 2360 extern void pf_udp_mapping_release(struct pf_udp_mapping 2361 *mapping); 2362 uint32_t pf_hashsrc(struct pf_addr *, sa_family_t); 2363 extern bool pf_src_node_exists(struct pf_ksrc_node **, 2364 struct pf_srchash *); 2365 extern struct pf_ksrc_node *pf_find_src_node(struct pf_addr *, 2366 struct pf_krule *, sa_family_t, 2367 struct pf_srchash **, bool); 2368 extern void pf_unlink_src_node(struct pf_ksrc_node *); 2369 extern u_int pf_free_src_nodes(struct pf_ksrc_node_list *); 2370 extern void pf_print_state(struct pf_kstate *); 2371 extern void pf_print_flags(uint16_t); 2372 extern int pf_addr_wrap_neq(struct pf_addr_wrap *, 2373 struct pf_addr_wrap *); 2374 extern u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t, 2375 u_int8_t); 2376 extern u_int16_t pf_proto_cksum_fixup(struct mbuf *, u_int16_t, 2377 u_int16_t, u_int16_t, u_int8_t); 2378 2379 VNET_DECLARE(struct ifnet *, sync_ifp); 2380 #define V_sync_ifp VNET(sync_ifp); 2381 VNET_DECLARE(struct pf_krule, pf_default_rule); 2382 #define V_pf_default_rule VNET(pf_default_rule) 2383 extern void pf_addrcpy(struct pf_addr *, const struct pf_addr *, 2384 sa_family_t); 2385 void pf_free_rule(struct pf_krule *); 2386 2387 int pf_test_eth(int, int, struct ifnet *, struct mbuf **, struct inpcb *); 2388 int pf_scan_sctp(struct pf_pdesc *); 2389 #if defined(INET) || defined(INET6) 2390 int pf_test(sa_family_t, int, int, struct ifnet *, struct mbuf **, struct inpcb *, 2391 struct pf_rule_actions *); 2392 #endif 2393 #ifdef INET 2394 int pf_normalize_ip(u_short *, struct pf_pdesc *); 2395 #endif /* INET */ 2396 2397 #ifdef INET6 2398 int pf_normalize_ip6(int, u_short *, struct pf_pdesc *); 2399 void pf_poolmask(struct pf_addr *, struct pf_addr*, 2400 struct pf_addr *, struct pf_addr *, sa_family_t); 2401 void pf_addr_inc(struct pf_addr *, sa_family_t); 2402 int pf_max_frag_size(struct mbuf *); 2403 int pf_refragment6(struct ifnet *, struct mbuf **, struct m_tag *, 2404 struct ifnet *, bool); 2405 #endif /* INET6 */ 2406 2407 int pf_multihome_scan_init(int, int, struct pf_pdesc *); 2408 int pf_multihome_scan_asconf(int, int, struct pf_pdesc *); 2409 2410 u_int32_t pf_new_isn(struct pf_kstate *); 2411 void *pf_pull_hdr(const struct mbuf *, int, void *, int, u_short *, u_short *, 2412 sa_family_t); 2413 void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t); 2414 void pf_change_proto_a(struct mbuf *, void *, u_int16_t *, u_int32_t, 2415 u_int8_t); 2416 void pf_change_tcp_a(struct mbuf *, void *, u_int16_t *, u_int32_t); 2417 void pf_patch_16_unaligned(struct mbuf *, u_int16_t *, void *, u_int16_t, 2418 bool, u_int8_t); 2419 void pf_patch_32_unaligned(struct mbuf *, u_int16_t *, void *, u_int32_t, 2420 bool, u_int8_t); 2421 void pf_send_deferred_syn(struct pf_kstate *); 2422 int pf_match_addr(u_int8_t, const struct pf_addr *, 2423 const struct pf_addr *, const struct pf_addr *, sa_family_t); 2424 int pf_match_addr_range(const struct pf_addr *, const struct pf_addr *, 2425 const struct pf_addr *, sa_family_t); 2426 int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t); 2427 2428 void pf_normalize_init(void); 2429 void pf_normalize_cleanup(void); 2430 int pf_normalize_tcp(struct pf_pdesc *); 2431 void pf_normalize_tcp_cleanup(struct pf_kstate *); 2432 int pf_normalize_tcp_init(struct pf_pdesc *, 2433 struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *); 2434 int pf_normalize_tcp_stateful(struct pf_pdesc *, 2435 u_short *, struct tcphdr *, struct pf_kstate *, 2436 struct pf_state_peer *, struct pf_state_peer *, int *); 2437 int pf_normalize_sctp_init(struct pf_pdesc *, 2438 struct pf_state_peer *, struct pf_state_peer *); 2439 int pf_normalize_sctp(struct pf_pdesc *); 2440 u_int32_t 2441 pf_state_expires(const struct pf_kstate *); 2442 void pf_purge_expired_fragments(void); 2443 void pf_purge_fragments(uint32_t); 2444 int pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kkif *, 2445 int); 2446 int pf_socket_lookup(struct pf_pdesc *); 2447 struct pf_state_key *pf_alloc_state_key(int); 2448 int pf_translate(struct pf_pdesc *, struct pf_addr *, u_int16_t, 2449 struct pf_addr *, u_int16_t, u_int16_t, int); 2450 int pf_translate_af(struct pf_pdesc *); 2451 void pfr_initialize(void); 2452 void pfr_cleanup(void); 2453 int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t); 2454 void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t, 2455 u_int64_t, int, int, int); 2456 int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, sa_family_t, 2457 pf_addr_filter_func_t); 2458 void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *); 2459 struct pfr_ktable * 2460 pfr_attach_table(struct pf_kruleset *, char *); 2461 struct pfr_ktable * 2462 pfr_eth_attach_table(struct pf_keth_ruleset *, char *); 2463 void pfr_detach_table(struct pfr_ktable *); 2464 int pfr_clr_tables(struct pfr_table *, int *, int); 2465 int pfr_add_tables(struct pfr_table *, int, int *, int); 2466 int pfr_del_tables(struct pfr_table *, int, int *, int); 2467 int pfr_table_count(struct pfr_table *, int); 2468 int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int); 2469 int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int); 2470 int pfr_clr_tstats(struct pfr_table *, int, int *, int); 2471 int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int); 2472 int pfr_clr_addrs(struct pfr_table *, int *, int); 2473 int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *, long); 2474 int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 2475 int); 2476 int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 2477 int); 2478 int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 2479 int *, int *, int *, int, u_int32_t); 2480 int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int); 2481 int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int); 2482 int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *, 2483 int); 2484 int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 2485 int); 2486 int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int); 2487 int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int); 2488 int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int); 2489 int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *, 2490 int *, u_int32_t, int); 2491 2492 MALLOC_DECLARE(PFI_MTYPE); 2493 VNET_DECLARE(struct pfi_kkif *, pfi_all); 2494 #define V_pfi_all VNET(pfi_all) 2495 2496 void pfi_initialize(void); 2497 void pfi_initialize_vnet(void); 2498 void pfi_cleanup(void); 2499 void pfi_cleanup_vnet(void); 2500 void pfi_kkif_ref(struct pfi_kkif *); 2501 void pfi_kkif_unref(struct pfi_kkif *); 2502 struct pfi_kkif *pfi_kkif_find(const char *); 2503 struct pfi_kkif *pfi_kkif_attach(struct pfi_kkif *, const char *); 2504 int pfi_kkif_match(struct pfi_kkif *, struct pfi_kkif *); 2505 void pfi_kkif_purge(void); 2506 int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *, 2507 sa_family_t); 2508 int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t); 2509 void pfi_dynaddr_remove(struct pfi_dynaddr *); 2510 void pfi_dynaddr_copyout(struct pf_addr_wrap *); 2511 void pfi_update_status(const char *, struct pf_status *); 2512 void pfi_get_ifaces(const char *, struct pfi_kif *, int *); 2513 int pfi_set_flags(const char *, int); 2514 int pfi_clear_flags(const char *, int); 2515 2516 int pf_match_tag(struct mbuf *, struct pf_krule *, int *, int); 2517 int pf_tag_packet(struct pf_pdesc *, int); 2518 int pf_addr_cmp(struct pf_addr *, struct pf_addr *, 2519 sa_family_t); 2520 2521 u_int16_t pf_get_mss(struct pf_pdesc *); 2522 u_int8_t pf_get_wscale(struct pf_pdesc *); 2523 struct mbuf *pf_build_tcp(const struct pf_krule *, sa_family_t, 2524 const struct pf_addr *, const struct pf_addr *, 2525 u_int16_t, u_int16_t, u_int32_t, u_int32_t, 2526 u_int8_t, u_int16_t, u_int16_t, u_int8_t, int, 2527 u_int16_t, u_int16_t, int); 2528 void pf_send_tcp(const struct pf_krule *, sa_family_t, 2529 const struct pf_addr *, const struct pf_addr *, 2530 u_int16_t, u_int16_t, u_int32_t, u_int32_t, 2531 u_int8_t, u_int16_t, u_int16_t, u_int8_t, int, 2532 u_int16_t, u_int16_t, int); 2533 2534 void pf_syncookies_init(void); 2535 void pf_syncookies_cleanup(void); 2536 int pf_get_syncookies(struct pfioc_nv *); 2537 int pf_set_syncookies(struct pfioc_nv *); 2538 int pf_synflood_check(struct pf_pdesc *); 2539 void pf_syncookie_send(struct pf_pdesc *); 2540 bool pf_syncookie_check(struct pf_pdesc *); 2541 u_int8_t pf_syncookie_validate(struct pf_pdesc *); 2542 struct mbuf * pf_syncookie_recreate_syn(struct pf_pdesc *); 2543 2544 VNET_DECLARE(struct pf_kstatus, pf_status); 2545 #define V_pf_status VNET(pf_status) 2546 2547 struct pf_limit { 2548 uma_zone_t zone; 2549 u_int limit; 2550 }; 2551 VNET_DECLARE(struct pf_limit, pf_limits[PF_LIMIT_MAX]); 2552 #define V_pf_limits VNET(pf_limits) 2553 2554 #endif /* _KERNEL */ 2555 2556 #ifdef _KERNEL 2557 struct pf_nl_pooladdr { 2558 u_int32_t action; 2559 u_int32_t ticket; 2560 u_int32_t nr; 2561 u_int32_t r_num; 2562 u_int8_t r_action; 2563 u_int8_t r_last; 2564 u_int8_t af; 2565 char anchor[MAXPATHLEN]; 2566 struct pf_pooladdr addr; 2567 /* Above this is identical to pfioc_pooladdr */ 2568 int which; 2569 }; 2570 2571 VNET_DECLARE(struct pf_kanchor_global, pf_anchors); 2572 #define V_pf_anchors VNET(pf_anchors) 2573 VNET_DECLARE(struct pf_kanchor, pf_main_anchor); 2574 #define V_pf_main_anchor VNET(pf_main_anchor) 2575 VNET_DECLARE(struct pf_keth_anchor_global, pf_keth_anchors); 2576 #define V_pf_keth_anchors VNET(pf_keth_anchors) 2577 #define pf_main_ruleset V_pf_main_anchor.ruleset 2578 2579 VNET_DECLARE(struct pf_keth_anchor, pf_main_keth_anchor); 2580 #define V_pf_main_keth_anchor VNET(pf_main_keth_anchor) 2581 VNET_DECLARE(struct pf_keth_ruleset*, pf_keth); 2582 #define V_pf_keth VNET(pf_keth) 2583 2584 void pf_init_kruleset(struct pf_kruleset *); 2585 void pf_init_keth(struct pf_keth_ruleset *); 2586 int pf_kanchor_setup(struct pf_krule *, 2587 const struct pf_kruleset *, const char *); 2588 int pf_kanchor_copyout(const struct pf_kruleset *, 2589 const struct pf_krule *, char *, size_t); 2590 int pf_kanchor_nvcopyout(const struct pf_kruleset *, 2591 const struct pf_krule *, nvlist_t *); 2592 void pf_kanchor_remove(struct pf_krule *); 2593 void pf_remove_if_empty_kruleset(struct pf_kruleset *); 2594 struct pf_kruleset *pf_find_kruleset(const char *); 2595 struct pf_kruleset *pf_find_or_create_kruleset(const char *); 2596 void pf_rs_initialize(void); 2597 2598 2599 struct pf_krule *pf_krule_alloc(void); 2600 2601 void pf_remove_if_empty_keth_ruleset( 2602 struct pf_keth_ruleset *); 2603 struct pf_keth_ruleset *pf_find_keth_ruleset(const char *); 2604 struct pf_keth_anchor *pf_find_keth_anchor(const char *); 2605 int pf_keth_anchor_setup(struct pf_keth_rule *, 2606 const struct pf_keth_ruleset *, const char *); 2607 int pf_keth_anchor_nvcopyout( 2608 const struct pf_keth_ruleset *, 2609 const struct pf_keth_rule *, nvlist_t *); 2610 struct pf_keth_ruleset *pf_find_or_create_keth_ruleset(const char *); 2611 void pf_keth_anchor_remove(struct pf_keth_rule *); 2612 2613 int pf_ioctl_getrules(struct pfioc_rule *); 2614 int pf_ioctl_addrule(struct pf_krule *, uint32_t, 2615 uint32_t, const char *, const char *, uid_t uid, 2616 pid_t); 2617 void pf_ioctl_clear_status(void); 2618 int pf_ioctl_get_timeout(int, int *); 2619 int pf_ioctl_set_timeout(int, int, int *); 2620 int pf_ioctl_get_limit(int, unsigned int *); 2621 int pf_ioctl_set_limit(int, unsigned int, unsigned int *); 2622 int pf_ioctl_begin_addrs(uint32_t *); 2623 int pf_ioctl_add_addr(struct pf_nl_pooladdr *); 2624 int pf_ioctl_get_addrs(struct pf_nl_pooladdr *); 2625 int pf_ioctl_get_addr(struct pf_nl_pooladdr *); 2626 int pf_ioctl_get_rulesets(struct pfioc_ruleset *); 2627 int pf_ioctl_get_ruleset(struct pfioc_ruleset *); 2628 2629 void pf_krule_free(struct pf_krule *); 2630 void pf_krule_clear_counters(struct pf_krule *); 2631 void pf_addr_copyout(struct pf_addr_wrap *); 2632 #endif 2633 2634 /* The fingerprint functions can be linked into userland programs (tcpdump) */ 2635 int pf_osfp_add(struct pf_osfp_ioctl *); 2636 #ifdef _KERNEL 2637 struct pf_osfp_enlist * 2638 pf_osfp_fingerprint(struct pf_pdesc *, const struct tcphdr *); 2639 #endif /* _KERNEL */ 2640 void pf_osfp_flush(void); 2641 int pf_osfp_get(struct pf_osfp_ioctl *); 2642 int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t); 2643 2644 #ifdef _KERNEL 2645 void pf_print_host(struct pf_addr *, u_int16_t, sa_family_t); 2646 2647 void pf_step_into_anchor(struct pf_kanchor_stackframe *, int *, 2648 struct pf_kruleset **, int, struct pf_krule **, 2649 struct pf_krule **, int *); 2650 int pf_step_out_of_anchor(struct pf_kanchor_stackframe *, int *, 2651 struct pf_kruleset **, int, struct pf_krule **, 2652 struct pf_krule **, int *); 2653 void pf_step_into_keth_anchor(struct pf_keth_anchor_stackframe *, 2654 int *, struct pf_keth_ruleset **, 2655 struct pf_keth_rule **, struct pf_keth_rule **, 2656 int *); 2657 int pf_step_out_of_keth_anchor(struct pf_keth_anchor_stackframe *, 2658 int *, struct pf_keth_ruleset **, 2659 struct pf_keth_rule **, struct pf_keth_rule **, 2660 int *); 2661 2662 u_short pf_map_addr(u_int8_t, struct pf_krule *, 2663 struct pf_addr *, struct pf_addr *, 2664 struct pfi_kkif **nkif, struct pf_addr *, 2665 struct pf_kpool *); 2666 u_short pf_map_addr_sn(u_int8_t, struct pf_krule *, 2667 struct pf_addr *, struct pf_addr *, 2668 struct pfi_kkif **nkif, struct pf_addr *, 2669 struct pf_ksrc_node **, struct pf_srchash **, 2670 struct pf_kpool *); 2671 int pf_get_transaddr_af(struct pf_krule *, 2672 struct pf_pdesc *); 2673 u_short pf_get_translation(struct pf_pdesc *, 2674 int, struct pf_state_key **, struct pf_state_key **, 2675 struct pf_kanchor_stackframe *, struct pf_krule **, 2676 struct pf_udp_mapping **udp_mapping); 2677 2678 int pf_state_key_setup(struct pf_pdesc *, 2679 u_int16_t, u_int16_t, 2680 struct pf_state_key **sk, struct pf_state_key **nk); 2681 struct pf_state_key *pf_state_key_clone(const struct pf_state_key *); 2682 void pf_rule_to_actions(struct pf_krule *, 2683 struct pf_rule_actions *); 2684 int pf_normalize_mss(struct pf_pdesc *pd); 2685 #if defined(INET) || defined(INET6) 2686 void pf_scrub(struct pf_pdesc *); 2687 #endif 2688 2689 struct pfi_kkif *pf_kkif_create(int); 2690 void pf_kkif_free(struct pfi_kkif *); 2691 void pf_kkif_zero(struct pfi_kkif *); 2692 2693 2694 /* NAT64 functions. */ 2695 int inet_nat64(int, const void *, void *, const void *, u_int8_t); 2696 int inet_nat64_inet(const void *, void *, const void *, u_int8_t); 2697 int inet_nat64_inet6(const void *, void *, const void *, u_int8_t); 2698 2699 int inet_nat46(int, const void *, void *, const void *, u_int8_t); 2700 int inet_nat46_inet(const void *, void *, const void *, u_int8_t); 2701 int inet_nat46_inet6(const void *, void *, const void *, u_int8_t); 2702 2703 #endif /* _KERNEL */ 2704 2705 #endif /* _NET_PFVAR_H_ */ 2706