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 /* 628 * At the moment there are no rules which have both NAT and RDR actions, 629 * apart from af-to rules, but those don't to source tracking for address 630 * translation. And the r->rdr pool is used for both NAT and RDR. 631 * So there is no PF_SN_RDR. 632 */ 633 enum pf_sn_types { PF_SN_LIMIT, PF_SN_NAT, PF_SN_ROUTE, PF_SN_MAX }; 634 typedef enum pf_sn_types pf_sn_types_t; 635 #define PF_SN_TYPE_NAMES { \ 636 "limit source-track", \ 637 "NAT/RDR sticky-address", \ 638 "route sticky-address", \ 639 NULL \ 640 } 641 642 #ifdef _KERNEL 643 644 struct pf_kpooladdr { 645 struct pf_addr_wrap addr; 646 TAILQ_ENTRY(pf_kpooladdr) entries; 647 char ifname[IFNAMSIZ]; 648 struct pfi_kkif *kif; 649 }; 650 651 TAILQ_HEAD(pf_kpalist, pf_kpooladdr); 652 653 struct pf_kpool { 654 struct mtx mtx; 655 struct pf_kpalist list; 656 struct pf_kpooladdr *cur; 657 struct pf_poolhashkey key; 658 struct pf_addr counter; 659 struct pf_mape_portset mape; 660 int tblidx; 661 u_int16_t proxy_port[2]; 662 u_int8_t opts; 663 }; 664 665 struct pf_rule_actions { 666 struct pf_addr rt_addr; 667 struct pfi_kkif *rt_kif; 668 int32_t rtableid; 669 uint32_t flags; 670 uint16_t qid; 671 uint16_t pqid; 672 uint16_t max_mss; 673 uint16_t dnpipe; 674 uint16_t dnrpipe; /* Reverse direction pipe */ 675 uint8_t log; 676 uint8_t set_tos; 677 uint8_t min_ttl; 678 uint8_t set_prio[2]; 679 uint8_t rt; 680 }; 681 682 union pf_keth_rule_ptr { 683 struct pf_keth_rule *ptr; 684 uint32_t nr; 685 }; 686 687 struct pf_keth_rule_addr { 688 uint8_t addr[ETHER_ADDR_LEN]; 689 uint8_t mask[ETHER_ADDR_LEN]; 690 bool neg; 691 uint8_t isset; 692 }; 693 694 struct pf_keth_anchor; 695 696 TAILQ_HEAD(pf_keth_ruleq, pf_keth_rule); 697 698 struct pf_keth_ruleset { 699 struct pf_keth_ruleq rules[2]; 700 struct pf_keth_rules { 701 struct pf_keth_ruleq *rules; 702 int open; 703 uint32_t ticket; 704 } active, inactive; 705 struct vnet *vnet; 706 struct pf_keth_anchor *anchor; 707 }; 708 709 RB_HEAD(pf_keth_anchor_global, pf_keth_anchor); 710 RB_HEAD(pf_keth_anchor_node, pf_keth_anchor); 711 struct pf_keth_anchor { 712 RB_ENTRY(pf_keth_anchor) entry_node; 713 RB_ENTRY(pf_keth_anchor) entry_global; 714 struct pf_keth_anchor *parent; 715 struct pf_keth_anchor_node children; 716 char name[PF_ANCHOR_NAME_SIZE]; 717 char path[MAXPATHLEN]; 718 struct pf_keth_ruleset ruleset; 719 int refcnt; /* anchor rules */ 720 uint8_t anchor_relative; 721 uint8_t anchor_wildcard; 722 }; 723 RB_PROTOTYPE(pf_keth_anchor_node, pf_keth_anchor, entry_node, 724 pf_keth_anchor_compare); 725 RB_PROTOTYPE(pf_keth_anchor_global, pf_keth_anchor, entry_global, 726 pf_keth_anchor_compare); 727 728 struct pf_keth_rule { 729 #define PFE_SKIP_IFP 0 730 #define PFE_SKIP_DIR 1 731 #define PFE_SKIP_PROTO 2 732 #define PFE_SKIP_SRC_ADDR 3 733 #define PFE_SKIP_DST_ADDR 4 734 #define PFE_SKIP_SRC_IP_ADDR 5 735 #define PFE_SKIP_DST_IP_ADDR 6 736 #define PFE_SKIP_COUNT 7 737 union pf_keth_rule_ptr skip[PFE_SKIP_COUNT]; 738 739 TAILQ_ENTRY(pf_keth_rule) entries; 740 741 struct pf_keth_anchor *anchor; 742 u_int8_t anchor_relative; 743 u_int8_t anchor_wildcard; 744 745 uint32_t nr; 746 747 bool quick; 748 749 /* Filter */ 750 char ifname[IFNAMSIZ]; 751 struct pfi_kkif *kif; 752 bool ifnot; 753 uint8_t direction; 754 uint16_t proto; 755 struct pf_keth_rule_addr src, dst; 756 struct pf_rule_addr ipsrc, ipdst; 757 char match_tagname[PF_TAG_NAME_SIZE]; 758 uint16_t match_tag; 759 bool match_tag_not; 760 761 762 /* Stats */ 763 counter_u64_t evaluations; 764 counter_u64_t packets[2]; 765 counter_u64_t bytes[2]; 766 time_t *timestamp; 767 768 /* Action */ 769 char qname[PF_QNAME_SIZE]; 770 int qid; 771 char tagname[PF_TAG_NAME_SIZE]; 772 uint16_t tag; 773 char bridge_to_name[IFNAMSIZ]; 774 struct pfi_kkif *bridge_to; 775 uint8_t action; 776 uint16_t dnpipe; 777 uint32_t dnflags; 778 779 char label[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE]; 780 uint32_t ridentifier; 781 }; 782 783 RB_HEAD(pf_krule_global, pf_krule); 784 RB_PROTOTYPE(pf_krule_global, pf_krule, entry_global, pf_krule_compare); 785 786 struct pf_krule { 787 struct pf_rule_addr src; 788 struct pf_rule_addr dst; 789 struct pf_krule *skip[PF_SKIP_COUNT]; 790 char label[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE]; 791 uint32_t ridentifier; 792 char ifname[IFNAMSIZ]; 793 char rcv_ifname[IFNAMSIZ]; 794 char qname[PF_QNAME_SIZE]; 795 char pqname[PF_QNAME_SIZE]; 796 char tagname[PF_TAG_NAME_SIZE]; 797 char match_tagname[PF_TAG_NAME_SIZE]; 798 799 char overload_tblname[PF_TABLE_NAME_SIZE]; 800 801 TAILQ_ENTRY(pf_krule) entries; 802 struct pf_kpool nat; 803 struct pf_kpool rdr; 804 struct pf_kpool route; 805 806 struct pf_counter_u64 evaluations; 807 struct pf_counter_u64 packets[2]; 808 struct pf_counter_u64 bytes[2]; 809 time_t *timestamp; 810 811 struct pfi_kkif *kif; 812 struct pfi_kkif *rcv_kif; 813 struct pf_kanchor *anchor; 814 struct pfr_ktable *overload_tbl; 815 816 pf_osfp_t os_fingerprint; 817 818 int32_t rtableid; 819 u_int32_t timeout[PFTM_MAX]; 820 u_int32_t max_states; 821 u_int32_t max_src_nodes; 822 u_int32_t max_src_states; 823 u_int32_t max_src_conn; 824 struct { 825 u_int32_t limit; 826 u_int32_t seconds; 827 } max_src_conn_rate; 828 u_int16_t qid; 829 u_int16_t pqid; 830 u_int16_t dnpipe; 831 u_int16_t dnrpipe; 832 u_int32_t free_flags; 833 u_int32_t nr; 834 u_int32_t prob; 835 uid_t cuid; 836 pid_t cpid; 837 838 counter_u64_t states_cur; 839 counter_u64_t states_tot; 840 counter_u64_t src_nodes[PF_SN_MAX]; 841 842 u_int16_t return_icmp; 843 u_int16_t return_icmp6; 844 u_int16_t max_mss; 845 u_int16_t tag; 846 u_int16_t match_tag; 847 u_int16_t scrub_flags; 848 849 struct pf_rule_uid uid; 850 struct pf_rule_gid gid; 851 852 u_int32_t rule_flag; 853 uint32_t rule_ref; 854 u_int8_t action; 855 u_int8_t direction; 856 u_int8_t log; 857 u_int8_t logif; 858 u_int8_t quick; 859 u_int8_t ifnot; 860 u_int8_t match_tag_not; 861 u_int8_t natpass; 862 863 u_int8_t keep_state; 864 sa_family_t af; 865 u_int8_t proto; 866 u_int8_t type; 867 u_int8_t code; 868 u_int8_t flags; 869 u_int8_t flagset; 870 u_int8_t min_ttl; 871 u_int8_t allow_opts; 872 u_int8_t rt; 873 u_int8_t return_ttl; 874 u_int8_t tos; 875 u_int8_t set_tos; 876 u_int8_t anchor_relative; 877 u_int8_t anchor_wildcard; 878 879 u_int8_t flush; 880 u_int8_t prio; 881 u_int8_t set_prio[2]; 882 sa_family_t naf; 883 u_int8_t rcvifnot; 884 885 struct { 886 struct pf_addr addr; 887 u_int16_t port; 888 } divert; 889 u_int8_t md5sum[PF_MD5_DIGEST_LENGTH]; 890 RB_ENTRY(pf_krule) entry_global; 891 892 #ifdef PF_WANT_32_TO_64_COUNTER 893 LIST_ENTRY(pf_krule) allrulelist; 894 bool allrulelinked; 895 #endif 896 }; 897 898 struct pf_krule_item { 899 SLIST_ENTRY(pf_krule_item) entry; 900 struct pf_krule *r; 901 }; 902 903 SLIST_HEAD(pf_krule_slist, pf_krule_item); 904 905 struct pf_ksrc_node { 906 LIST_ENTRY(pf_ksrc_node) entry; 907 struct pf_addr addr; 908 struct pf_addr raddr; 909 struct pf_krule_slist match_rules; 910 struct pf_krule *rule; 911 struct pfi_kkif *rkif; 912 counter_u64_t bytes[2]; 913 counter_u64_t packets[2]; 914 u_int32_t states; 915 u_int32_t conn; 916 struct pf_threshold conn_rate; 917 u_int32_t creation; 918 u_int32_t expire; 919 sa_family_t af; 920 sa_family_t naf; 921 u_int8_t ruletype; 922 pf_sn_types_t type; 923 struct mtx *lock; 924 }; 925 #endif 926 927 struct pf_state_scrub { 928 struct timeval pfss_last; /* time received last packet */ 929 u_int32_t pfss_tsecr; /* last echoed timestamp */ 930 u_int32_t pfss_tsval; /* largest timestamp */ 931 u_int32_t pfss_tsval0; /* original timestamp */ 932 u_int16_t pfss_flags; 933 #define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */ 934 #define PFSS_PAWS 0x0010 /* stricter PAWS checks */ 935 #define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */ 936 #define PFSS_DATA_TS 0x0040 /* timestamp on data packets */ 937 #define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */ 938 u_int8_t pfss_ttl; /* stashed TTL */ 939 u_int8_t pad; 940 union { 941 u_int32_t pfss_ts_mod; /* timestamp modulation */ 942 u_int32_t pfss_v_tag; /* SCTP verification tag */ 943 }; 944 }; 945 946 struct pf_state_host { 947 struct pf_addr addr; 948 u_int16_t port; 949 u_int16_t pad; 950 }; 951 952 struct pf_state_peer { 953 struct pf_state_scrub *scrub; /* state is scrubbed */ 954 u_int32_t seqlo; /* Max sequence number sent */ 955 u_int32_t seqhi; /* Max the other end ACKd + win */ 956 u_int32_t seqdiff; /* Sequence number modulator */ 957 u_int16_t max_win; /* largest window (pre scaling) */ 958 u_int16_t mss; /* Maximum segment size option */ 959 u_int8_t state; /* active state level */ 960 u_int8_t wscale; /* window scaling factor */ 961 u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */ 962 u_int8_t pad[1]; 963 }; 964 965 /* Keep synced with struct pf_udp_endpoint. */ 966 struct pf_udp_endpoint_cmp { 967 struct pf_addr addr; 968 uint16_t port; 969 sa_family_t af; 970 uint8_t pad[1]; 971 }; 972 973 struct pf_udp_endpoint { 974 struct pf_addr addr; 975 uint16_t port; 976 sa_family_t af; 977 uint8_t pad[1]; 978 979 struct pf_udp_mapping *mapping; 980 LIST_ENTRY(pf_udp_endpoint) entry; 981 }; 982 983 struct pf_udp_mapping { 984 struct pf_udp_endpoint endpoints[2]; 985 u_int refs; 986 }; 987 988 /* Keep synced with struct pf_state_key. */ 989 struct pf_state_key_cmp { 990 struct pf_addr addr[2]; 991 u_int16_t port[2]; 992 sa_family_t af; 993 u_int8_t proto; 994 u_int8_t pad[2]; 995 }; 996 997 struct pf_state_key { 998 struct pf_addr addr[2]; 999 u_int16_t port[2]; 1000 sa_family_t af; 1001 u_int8_t proto; 1002 u_int8_t pad[2]; 1003 1004 LIST_ENTRY(pf_state_key) entry; 1005 TAILQ_HEAD(, pf_kstate) states[2]; 1006 }; 1007 1008 #define PF_REVERSED_KEY(state, family) \ 1009 (((state)->key[PF_SK_WIRE]->af != (state)->key[PF_SK_STACK]->af) && \ 1010 ((state)->key[PF_SK_WIRE]->af != (family)) && \ 1011 ((state)->direction == PF_IN)) 1012 1013 /* Keep synced with struct pf_kstate. */ 1014 struct pf_state_cmp { 1015 u_int64_t id; 1016 u_int32_t creatorid; 1017 u_int8_t direction; 1018 u_int8_t pad[3]; 1019 }; 1020 1021 struct pf_state_scrub_export { 1022 uint16_t pfss_flags; 1023 uint8_t pfss_ttl; /* stashed TTL */ 1024 #define PF_SCRUB_FLAG_VALID 0x01 1025 uint8_t scrub_flag; 1026 uint32_t pfss_ts_mod; /* timestamp modulation */ 1027 }; 1028 1029 struct pf_state_key_export { 1030 struct pf_addr addr[2]; 1031 uint16_t port[2]; 1032 }; 1033 1034 struct pf_state_peer_export { 1035 struct pf_state_scrub_export scrub; /* state is scrubbed */ 1036 uint32_t seqlo; /* Max sequence number sent */ 1037 uint32_t seqhi; /* Max the other end ACKd + win */ 1038 uint32_t seqdiff; /* Sequence number modulator */ 1039 uint16_t max_win; /* largest window (pre scaling) */ 1040 uint16_t mss; /* Maximum segment size option */ 1041 uint8_t state; /* active state level */ 1042 uint8_t wscale; /* window scaling factor */ 1043 uint8_t dummy[6]; 1044 }; 1045 _Static_assert(sizeof(struct pf_state_peer_export) == 32, "size incorrect"); 1046 1047 struct pf_state_export { 1048 uint64_t version; 1049 #define PF_STATE_VERSION 20230404 1050 uint64_t id; 1051 char ifname[IFNAMSIZ]; 1052 char orig_ifname[IFNAMSIZ]; 1053 struct pf_state_key_export key[2]; 1054 struct pf_state_peer_export src; 1055 struct pf_state_peer_export dst; 1056 struct pf_addr rt_addr; 1057 uint32_t rule; 1058 uint32_t anchor; 1059 uint32_t nat_rule; 1060 uint32_t creation; 1061 uint32_t expire; 1062 uint32_t spare0; 1063 uint64_t packets[2]; 1064 uint64_t bytes[2]; 1065 uint32_t creatorid; 1066 uint32_t spare1; 1067 sa_family_t af; 1068 uint8_t proto; 1069 uint8_t direction; 1070 uint8_t log; 1071 uint8_t state_flags_compat; 1072 uint8_t timeout; 1073 uint8_t sync_flags; 1074 uint8_t updates; 1075 uint16_t state_flags; 1076 uint16_t qid; 1077 uint16_t pqid; 1078 uint16_t dnpipe; 1079 uint16_t dnrpipe; 1080 int32_t rtableid; 1081 uint8_t min_ttl; 1082 uint8_t set_tos; 1083 uint16_t max_mss; 1084 uint8_t set_prio[2]; 1085 uint8_t rt; 1086 char rt_ifname[IFNAMSIZ]; 1087 1088 uint8_t spare[72]; 1089 }; 1090 _Static_assert(sizeof(struct pf_state_export) == 384, "size incorrect"); 1091 1092 #ifdef _KERNEL 1093 struct pf_kstate { 1094 /* 1095 * Area shared with pf_state_cmp 1096 */ 1097 u_int64_t id; 1098 u_int32_t creatorid; 1099 u_int8_t direction; 1100 u_int8_t pad[3]; 1101 /* 1102 * end of the area 1103 */ 1104 1105 u_int16_t state_flags; 1106 u_int8_t timeout; 1107 u_int8_t sync_state; /* PFSYNC_S_x */ 1108 u_int8_t sync_updates; 1109 u_int refs; 1110 struct mtx *lock; 1111 TAILQ_ENTRY(pf_kstate) sync_list; 1112 TAILQ_ENTRY(pf_kstate) key_list[2]; 1113 LIST_ENTRY(pf_kstate) entry; 1114 struct pf_state_peer src; 1115 struct pf_state_peer dst; 1116 struct pf_krule_slist match_rules; 1117 struct pf_krule *rule; 1118 struct pf_krule *anchor; 1119 struct pf_krule *nat_rule; 1120 struct pf_state_key *key[2]; /* addresses stack and wire */ 1121 struct pf_udp_mapping *udp_mapping; 1122 struct pfi_kkif *kif; 1123 struct pfi_kkif *orig_kif; /* The real kif, even if we're a floating state (i.e. if == V_pfi_all). */ 1124 struct pf_ksrc_node *sns[PF_SN_MAX];/* source nodes */ 1125 u_int64_t packets[2]; 1126 u_int64_t bytes[2]; 1127 u_int64_t creation; 1128 u_int64_t expire; 1129 u_int32_t pfsync_time; 1130 struct pf_rule_actions act; 1131 u_int16_t tag; 1132 u_int16_t if_index_in; 1133 u_int16_t if_index_out; 1134 }; 1135 1136 /* 1137 * 6 cache lines per struct, 10 structs per page. 1138 * Try to not grow the struct beyond that. 1139 */ 1140 _Static_assert(sizeof(struct pf_kstate) <= 384, "pf_kstate size crosses 384 bytes"); 1141 #endif 1142 1143 /* 1144 * Unified state structures for pulling states out of the kernel 1145 * used by pfsync(4) and the pf(4) ioctl. 1146 */ 1147 struct pfsync_state_scrub { 1148 u_int16_t pfss_flags; 1149 u_int8_t pfss_ttl; /* stashed TTL */ 1150 #define PFSYNC_SCRUB_FLAG_VALID 0x01 1151 u_int8_t scrub_flag; 1152 u_int32_t pfss_ts_mod; /* timestamp modulation */ 1153 } __packed; 1154 1155 struct pfsync_state_peer { 1156 struct pfsync_state_scrub scrub; /* state is scrubbed */ 1157 u_int32_t seqlo; /* Max sequence number sent */ 1158 u_int32_t seqhi; /* Max the other end ACKd + win */ 1159 u_int32_t seqdiff; /* Sequence number modulator */ 1160 u_int16_t max_win; /* largest window (pre scaling) */ 1161 u_int16_t mss; /* Maximum segment size option */ 1162 u_int8_t state; /* active state level */ 1163 u_int8_t wscale; /* window scaling factor */ 1164 u_int8_t pad[6]; 1165 } __packed; 1166 1167 struct pfsync_state_key { 1168 struct pf_addr addr[2]; 1169 u_int16_t port[2]; 1170 }; 1171 1172 struct pfsync_state_1301 { 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_int8_t __spare[2]; 1191 u_int8_t log; 1192 u_int8_t state_flags; 1193 u_int8_t timeout; 1194 u_int8_t sync_flags; 1195 u_int8_t updates; 1196 } __packed; 1197 1198 struct pfsync_state_1400 { 1199 /* The beginning of the struct is compatible with previous versions */ 1200 u_int64_t id; 1201 char ifname[IFNAMSIZ]; 1202 struct pfsync_state_key key[2]; 1203 struct pfsync_state_peer src; 1204 struct pfsync_state_peer dst; 1205 struct pf_addr rt_addr; 1206 u_int32_t rule; 1207 u_int32_t anchor; 1208 u_int32_t nat_rule; 1209 u_int32_t creation; 1210 u_int32_t expire; 1211 u_int32_t packets[2][2]; 1212 u_int32_t bytes[2][2]; 1213 u_int32_t creatorid; 1214 sa_family_t af; 1215 u_int8_t proto; 1216 u_int8_t direction; 1217 u_int16_t state_flags; 1218 u_int8_t log; 1219 u_int8_t __spare; 1220 u_int8_t timeout; 1221 u_int8_t sync_flags; 1222 u_int8_t updates; 1223 /* The rest is not */ 1224 u_int16_t qid; 1225 u_int16_t pqid; 1226 u_int16_t dnpipe; 1227 u_int16_t dnrpipe; 1228 int32_t rtableid; 1229 u_int8_t min_ttl; 1230 u_int8_t set_tos; 1231 u_int16_t max_mss; 1232 u_int8_t set_prio[2]; 1233 u_int8_t rt; 1234 char rt_ifname[IFNAMSIZ]; 1235 1236 } __packed; 1237 1238 union pfsync_state_union { 1239 struct pfsync_state_1301 pfs_1301; 1240 struct pfsync_state_1400 pfs_1400; 1241 } __packed; 1242 1243 #ifdef _KERNEL 1244 /* pfsync */ 1245 typedef int pfsync_state_import_t(union pfsync_state_union *, int, int); 1246 typedef void pfsync_insert_state_t(struct pf_kstate *); 1247 typedef void pfsync_update_state_t(struct pf_kstate *); 1248 typedef void pfsync_delete_state_t(struct pf_kstate *); 1249 typedef void pfsync_clear_states_t(u_int32_t, const char *); 1250 typedef int pfsync_defer_t(struct pf_kstate *, struct mbuf *); 1251 typedef void pfsync_detach_ifnet_t(struct ifnet *); 1252 typedef void pflow_export_state_t(const struct pf_kstate *); 1253 typedef bool pf_addr_filter_func_t(const sa_family_t, const struct pf_addr *); 1254 1255 VNET_DECLARE(pfsync_state_import_t *, pfsync_state_import_ptr); 1256 #define V_pfsync_state_import_ptr VNET(pfsync_state_import_ptr) 1257 VNET_DECLARE(pfsync_insert_state_t *, pfsync_insert_state_ptr); 1258 #define V_pfsync_insert_state_ptr VNET(pfsync_insert_state_ptr) 1259 VNET_DECLARE(pfsync_update_state_t *, pfsync_update_state_ptr); 1260 #define V_pfsync_update_state_ptr VNET(pfsync_update_state_ptr) 1261 VNET_DECLARE(pfsync_delete_state_t *, pfsync_delete_state_ptr); 1262 #define V_pfsync_delete_state_ptr VNET(pfsync_delete_state_ptr) 1263 VNET_DECLARE(pfsync_clear_states_t *, pfsync_clear_states_ptr); 1264 #define V_pfsync_clear_states_ptr VNET(pfsync_clear_states_ptr) 1265 VNET_DECLARE(pfsync_defer_t *, pfsync_defer_ptr); 1266 #define V_pfsync_defer_ptr VNET(pfsync_defer_ptr) 1267 VNET_DECLARE(pflow_export_state_t *, pflow_export_state_ptr); 1268 #define V_pflow_export_state_ptr VNET(pflow_export_state_ptr) 1269 extern pfsync_detach_ifnet_t *pfsync_detach_ifnet_ptr; 1270 1271 void pfsync_state_export(union pfsync_state_union *, 1272 struct pf_kstate *, int); 1273 void pf_state_export(struct pf_state_export *, 1274 struct pf_kstate *); 1275 1276 /* pflog */ 1277 struct pf_kruleset; 1278 struct pf_pdesc; 1279 typedef int pflog_packet_t(uint8_t, u_int8_t, 1280 struct pf_krule *, struct pf_krule *, struct pf_kruleset *, 1281 struct pf_pdesc *, int, struct pf_krule *); 1282 extern pflog_packet_t *pflog_packet_ptr; 1283 1284 #endif /* _KERNEL */ 1285 1286 #define PFSYNC_FLAG_SRCNODE 0x04 1287 #define PFSYNC_FLAG_NATSRCNODE 0x08 1288 1289 /* for copies to/from network byte order */ 1290 /* ioctl interface also uses network byte order */ 1291 #define pf_state_peer_hton(s,d) do { \ 1292 (d)->seqlo = htonl((s)->seqlo); \ 1293 (d)->seqhi = htonl((s)->seqhi); \ 1294 (d)->seqdiff = htonl((s)->seqdiff); \ 1295 (d)->max_win = htons((s)->max_win); \ 1296 (d)->mss = htons((s)->mss); \ 1297 (d)->state = (s)->state; \ 1298 (d)->wscale = (s)->wscale; \ 1299 if ((s)->scrub) { \ 1300 (d)->scrub.pfss_flags = \ 1301 htons((s)->scrub->pfss_flags & PFSS_TIMESTAMP); \ 1302 (d)->scrub.pfss_ttl = (s)->scrub->pfss_ttl; \ 1303 (d)->scrub.pfss_ts_mod = htonl((s)->scrub->pfss_ts_mod);\ 1304 (d)->scrub.scrub_flag = PFSYNC_SCRUB_FLAG_VALID; \ 1305 } \ 1306 } while (0) 1307 1308 #define pf_state_peer_ntoh(s,d) do { \ 1309 (d)->seqlo = ntohl((s)->seqlo); \ 1310 (d)->seqhi = ntohl((s)->seqhi); \ 1311 (d)->seqdiff = ntohl((s)->seqdiff); \ 1312 (d)->max_win = ntohs((s)->max_win); \ 1313 (d)->mss = ntohs((s)->mss); \ 1314 (d)->state = (s)->state; \ 1315 (d)->wscale = (s)->wscale; \ 1316 if ((s)->scrub.scrub_flag == PFSYNC_SCRUB_FLAG_VALID && \ 1317 (d)->scrub != NULL) { \ 1318 (d)->scrub->pfss_flags = \ 1319 ntohs((s)->scrub.pfss_flags) & PFSS_TIMESTAMP; \ 1320 (d)->scrub->pfss_ttl = (s)->scrub.pfss_ttl; \ 1321 (d)->scrub->pfss_ts_mod = ntohl((s)->scrub.pfss_ts_mod);\ 1322 } \ 1323 } while (0) 1324 1325 #define pf_state_counter_hton(s,d) do { \ 1326 d[0] = htonl((s>>32)&0xffffffff); \ 1327 d[1] = htonl(s&0xffffffff); \ 1328 } while (0) 1329 1330 #define pf_state_counter_from_pfsync(s) \ 1331 (((u_int64_t)(s[0])<<32) | (u_int64_t)(s[1])) 1332 1333 #define pf_state_counter_ntoh(s,d) do { \ 1334 d = ntohl(s[0]); \ 1335 d = d<<32; \ 1336 d += ntohl(s[1]); \ 1337 } while (0) 1338 1339 TAILQ_HEAD(pf_krulequeue, pf_krule); 1340 1341 struct pf_kanchor; 1342 1343 struct pf_kruleset { 1344 struct { 1345 struct pf_krulequeue queues[2]; 1346 struct { 1347 struct pf_krulequeue *ptr; 1348 struct pf_krule **ptr_array; 1349 u_int32_t rcount; 1350 u_int32_t ticket; 1351 int open; 1352 struct pf_krule_global *tree; 1353 } active, inactive; 1354 } rules[PF_RULESET_MAX]; 1355 struct pf_kanchor *anchor; 1356 u_int32_t tticket; 1357 int tables; 1358 int topen; 1359 }; 1360 1361 RB_HEAD(pf_kanchor_global, pf_kanchor); 1362 RB_HEAD(pf_kanchor_node, pf_kanchor); 1363 struct pf_kanchor { 1364 RB_ENTRY(pf_kanchor) entry_global; 1365 RB_ENTRY(pf_kanchor) entry_node; 1366 struct pf_kanchor *parent; 1367 struct pf_kanchor_node children; 1368 char name[PF_ANCHOR_NAME_SIZE]; 1369 char path[MAXPATHLEN]; 1370 struct pf_kruleset ruleset; 1371 int refcnt; /* anchor rules */ 1372 }; 1373 RB_PROTOTYPE(pf_kanchor_global, pf_kanchor, entry_global, pf_anchor_compare); 1374 RB_PROTOTYPE(pf_kanchor_node, pf_kanchor, entry_node, pf_kanchor_compare); 1375 1376 #define PF_RESERVED_ANCHOR "_pf" 1377 1378 #define PFR_TFLAG_PERSIST 0x00000001 1379 #define PFR_TFLAG_CONST 0x00000002 1380 #define PFR_TFLAG_ACTIVE 0x00000004 1381 #define PFR_TFLAG_INACTIVE 0x00000008 1382 #define PFR_TFLAG_REFERENCED 0x00000010 1383 #define PFR_TFLAG_REFDANCHOR 0x00000020 1384 #define PFR_TFLAG_COUNTERS 0x00000040 1385 /* Adjust masks below when adding flags. */ 1386 #define PFR_TFLAG_USRMASK (PFR_TFLAG_PERSIST | \ 1387 PFR_TFLAG_CONST | \ 1388 PFR_TFLAG_COUNTERS) 1389 #define PFR_TFLAG_SETMASK (PFR_TFLAG_ACTIVE | \ 1390 PFR_TFLAG_INACTIVE | \ 1391 PFR_TFLAG_REFERENCED | \ 1392 PFR_TFLAG_REFDANCHOR) 1393 #define PFR_TFLAG_ALLMASK (PFR_TFLAG_PERSIST | \ 1394 PFR_TFLAG_CONST | \ 1395 PFR_TFLAG_ACTIVE | \ 1396 PFR_TFLAG_INACTIVE | \ 1397 PFR_TFLAG_REFERENCED | \ 1398 PFR_TFLAG_REFDANCHOR | \ 1399 PFR_TFLAG_COUNTERS) 1400 1401 struct pf_kanchor_stackframe; 1402 struct pf_keth_anchor_stackframe; 1403 1404 struct pfr_table { 1405 char pfrt_anchor[MAXPATHLEN]; 1406 char pfrt_name[PF_TABLE_NAME_SIZE]; 1407 u_int32_t pfrt_flags; 1408 u_int8_t pfrt_fback; 1409 }; 1410 1411 enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED, 1412 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE, 1413 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_NOCOUNT, PFR_FB_MAX }; 1414 1415 struct pfr_addr { 1416 union { 1417 struct in_addr _pfra_ip4addr; 1418 struct in6_addr _pfra_ip6addr; 1419 } pfra_u; 1420 u_int8_t pfra_af; 1421 u_int8_t pfra_net; 1422 u_int8_t pfra_not; 1423 u_int8_t pfra_fback; 1424 }; 1425 #define pfra_ip4addr pfra_u._pfra_ip4addr 1426 #define pfra_ip6addr pfra_u._pfra_ip6addr 1427 1428 enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX }; 1429 enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX }; 1430 enum { PFR_TYPE_PACKETS, PFR_TYPE_BYTES, PFR_TYPE_MAX }; 1431 #define PFR_NUM_COUNTERS (PFR_DIR_MAX * PFR_OP_ADDR_MAX * PFR_TYPE_MAX) 1432 #define PFR_OP_XPASS PFR_OP_ADDR_MAX 1433 1434 struct pfr_astats { 1435 struct pfr_addr pfras_a; 1436 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1437 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1438 time_t pfras_tzero; 1439 }; 1440 1441 enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX }; 1442 1443 struct pfr_tstats { 1444 struct pfr_table pfrts_t; 1445 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1446 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1447 u_int64_t pfrts_match; 1448 u_int64_t pfrts_nomatch; 1449 time_t pfrts_tzero; 1450 int pfrts_cnt; 1451 int pfrts_refcnt[PFR_REFCNT_MAX]; 1452 }; 1453 1454 #ifdef _KERNEL 1455 1456 struct pfr_kstate_counter { 1457 counter_u64_t pkc_pcpu; 1458 u_int64_t pkc_zero; 1459 }; 1460 1461 static inline int 1462 pfr_kstate_counter_init(struct pfr_kstate_counter *pfrc, int flags) 1463 { 1464 1465 pfrc->pkc_zero = 0; 1466 pfrc->pkc_pcpu = counter_u64_alloc(flags); 1467 if (pfrc->pkc_pcpu == NULL) 1468 return (ENOMEM); 1469 return (0); 1470 } 1471 1472 static inline void 1473 pfr_kstate_counter_deinit(struct pfr_kstate_counter *pfrc) 1474 { 1475 1476 counter_u64_free(pfrc->pkc_pcpu); 1477 } 1478 1479 static inline u_int64_t 1480 pfr_kstate_counter_fetch(struct pfr_kstate_counter *pfrc) 1481 { 1482 u_int64_t c; 1483 1484 c = counter_u64_fetch(pfrc->pkc_pcpu); 1485 c -= pfrc->pkc_zero; 1486 return (c); 1487 } 1488 1489 static inline void 1490 pfr_kstate_counter_zero(struct pfr_kstate_counter *pfrc) 1491 { 1492 u_int64_t c; 1493 1494 c = counter_u64_fetch(pfrc->pkc_pcpu); 1495 pfrc->pkc_zero = c; 1496 } 1497 1498 static inline void 1499 pfr_kstate_counter_add(struct pfr_kstate_counter *pfrc, int64_t n) 1500 { 1501 1502 counter_u64_add(pfrc->pkc_pcpu, n); 1503 } 1504 1505 struct pfr_ktstats { 1506 struct pfr_table pfrts_t; 1507 struct pfr_kstate_counter pfrkts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1508 struct pfr_kstate_counter pfrkts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1509 struct pfr_kstate_counter pfrkts_match; 1510 struct pfr_kstate_counter pfrkts_nomatch; 1511 time_t pfrkts_tzero; 1512 int pfrkts_cnt; 1513 int pfrkts_refcnt[PFR_REFCNT_MAX]; 1514 }; 1515 1516 #endif /* _KERNEL */ 1517 1518 #define pfrts_name pfrts_t.pfrt_name 1519 #define pfrts_flags pfrts_t.pfrt_flags 1520 1521 #ifndef _SOCKADDR_UNION_DEFINED 1522 #define _SOCKADDR_UNION_DEFINED 1523 union sockaddr_union { 1524 struct sockaddr sa; 1525 struct sockaddr_in sin; 1526 struct sockaddr_in6 sin6; 1527 }; 1528 #endif /* _SOCKADDR_UNION_DEFINED */ 1529 1530 struct pfr_kcounters { 1531 counter_u64_t pfrkc_counters; 1532 time_t pfrkc_tzero; 1533 }; 1534 #define pfr_kentry_counter(kc, dir, op, t) \ 1535 ((kc)->pfrkc_counters + \ 1536 (dir) * PFR_OP_ADDR_MAX * PFR_TYPE_MAX + (op) * PFR_TYPE_MAX + (t)) 1537 1538 #ifdef _KERNEL 1539 SLIST_HEAD(pfr_kentryworkq, pfr_kentry); 1540 struct pfr_kentry { 1541 struct radix_node pfrke_node[2]; 1542 union sockaddr_union pfrke_sa; 1543 SLIST_ENTRY(pfr_kentry) pfrke_workq; 1544 struct pfr_kcounters pfrke_counters; 1545 u_int8_t pfrke_af; 1546 u_int8_t pfrke_net; 1547 u_int8_t pfrke_not; 1548 u_int8_t pfrke_mark; 1549 }; 1550 1551 SLIST_HEAD(pfr_ktableworkq, pfr_ktable); 1552 RB_HEAD(pfr_ktablehead, pfr_ktable); 1553 struct pfr_ktable { 1554 struct pfr_ktstats pfrkt_kts; 1555 RB_ENTRY(pfr_ktable) pfrkt_tree; 1556 SLIST_ENTRY(pfr_ktable) pfrkt_workq; 1557 struct radix_node_head *pfrkt_ip4; 1558 struct radix_node_head *pfrkt_ip6; 1559 struct pfr_ktable *pfrkt_shadow; 1560 struct pfr_ktable *pfrkt_root; 1561 struct pf_kruleset *pfrkt_rs; 1562 long pfrkt_larg; 1563 int pfrkt_nflags; 1564 }; 1565 #define pfrkt_t pfrkt_kts.pfrts_t 1566 #define pfrkt_name pfrkt_t.pfrt_name 1567 #define pfrkt_anchor pfrkt_t.pfrt_anchor 1568 #define pfrkt_ruleset pfrkt_t.pfrt_ruleset 1569 #define pfrkt_flags pfrkt_t.pfrt_flags 1570 #define pfrkt_cnt pfrkt_kts.pfrkts_cnt 1571 #define pfrkt_refcnt pfrkt_kts.pfrkts_refcnt 1572 #define pfrkt_packets pfrkt_kts.pfrkts_packets 1573 #define pfrkt_bytes pfrkt_kts.pfrkts_bytes 1574 #define pfrkt_match pfrkt_kts.pfrkts_match 1575 #define pfrkt_nomatch pfrkt_kts.pfrkts_nomatch 1576 #define pfrkt_tzero pfrkt_kts.pfrkts_tzero 1577 #endif 1578 1579 #ifdef _KERNEL 1580 struct pfi_kkif { 1581 char pfik_name[IFNAMSIZ]; 1582 union { 1583 RB_ENTRY(pfi_kkif) _pfik_tree; 1584 LIST_ENTRY(pfi_kkif) _pfik_list; 1585 } _pfik_glue; 1586 #define pfik_tree _pfik_glue._pfik_tree 1587 #define pfik_list _pfik_glue._pfik_list 1588 struct pf_counter_u64 pfik_packets[2][2][2]; 1589 struct pf_counter_u64 pfik_bytes[2][2][2]; 1590 time_t pfik_tzero; 1591 u_int pfik_flags; 1592 struct ifnet *pfik_ifp; 1593 struct ifg_group *pfik_group; 1594 u_int pfik_rulerefs; 1595 TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs; 1596 #ifdef PF_WANT_32_TO_64_COUNTER 1597 LIST_ENTRY(pfi_kkif) pfik_allkiflist; 1598 #endif 1599 }; 1600 #endif 1601 1602 #define PFI_IFLAG_REFS 0x0001 /* has state references */ 1603 #define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */ 1604 #define PFI_IFLAG_ANY 0x0200 /* match any non-loopback interface */ 1605 1606 #ifdef _KERNEL 1607 struct pf_sctp_multihome_job; 1608 TAILQ_HEAD(pf_sctp_multihome_jobs, pf_sctp_multihome_job); 1609 1610 struct pf_pdesc { 1611 struct { 1612 int done; 1613 uid_t uid; 1614 gid_t gid; 1615 } lookup; 1616 u_int64_t tot_len; /* Make Mickey money */ 1617 union pf_headers { 1618 struct tcphdr tcp; 1619 struct udphdr udp; 1620 struct sctphdr sctp; 1621 struct icmp icmp; 1622 #ifdef INET6 1623 struct icmp6_hdr icmp6; 1624 #endif /* INET6 */ 1625 char any[0]; 1626 } hdr; 1627 1628 struct pf_addr nsaddr; /* src address after NAT */ 1629 struct pf_addr ndaddr; /* dst address after NAT */ 1630 1631 struct pfi_kkif *kif; /* incomming interface */ 1632 struct mbuf *m; 1633 1634 struct pf_addr *src; /* src address */ 1635 struct pf_addr *dst; /* dst address */ 1636 u_int16_t *pcksum; /* proto cksum */ 1637 u_int16_t *sport; 1638 u_int16_t *dport; 1639 u_int16_t osport; 1640 u_int16_t odport; 1641 u_int16_t nsport; /* src port after NAT */ 1642 u_int16_t ndport; /* dst port after NAT */ 1643 struct pf_mtag *pf_mtag; 1644 struct pf_rule_actions act; 1645 1646 u_int32_t off; /* protocol header offset */ 1647 bool df; /* IPv4 Don't fragment flag. */ 1648 u_int32_t hdrlen; /* protocol header length */ 1649 u_int32_t p_len; /* total length of protocol payload */ 1650 u_int32_t extoff; /* extentsion header offset */ 1651 u_int32_t fragoff; /* fragment header offset */ 1652 u_int32_t jumbolen; /* length from v6 jumbo header */ 1653 u_int32_t badopts; /* v4 options or v6 routing headers */ 1654 1655 u_int16_t *ip_sum; 1656 u_int16_t flags; /* Let SCRUB trigger behavior in 1657 * state code. Easier than tags */ 1658 #define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */ 1659 u_int16_t virtual_proto; 1660 #define PF_VPROTO_FRAGMENT 256 1661 sa_family_t af; 1662 sa_family_t naf; 1663 u_int8_t proto; 1664 u_int8_t tos; 1665 u_int8_t ttl; 1666 u_int8_t dir; /* direction */ 1667 u_int8_t sidx; /* key index for source */ 1668 u_int8_t didx; /* key index for destination */ 1669 #define PFDESC_SCTP_INIT 0x0001 1670 #define PFDESC_SCTP_INIT_ACK 0x0002 1671 #define PFDESC_SCTP_COOKIE 0x0004 1672 #define PFDESC_SCTP_COOKIE_ACK 0x0008 1673 #define PFDESC_SCTP_ABORT 0x0010 1674 #define PFDESC_SCTP_SHUTDOWN 0x0020 1675 #define PFDESC_SCTP_SHUTDOWN_COMPLETE 0x0040 1676 #define PFDESC_SCTP_DATA 0x0080 1677 #define PFDESC_SCTP_ASCONF 0x0100 1678 #define PFDESC_SCTP_HEARTBEAT 0x0200 1679 #define PFDESC_SCTP_HEARTBEAT_ACK 0x0400 1680 #define PFDESC_SCTP_OTHER 0x0800 1681 #define PFDESC_SCTP_ADD_IP 0x1000 1682 u_int16_t sctp_flags; 1683 u_int32_t sctp_initiate_tag; 1684 u_int16_t sctp_dummy_sum; 1685 struct pf_krule *related_rule; 1686 1687 struct pf_sctp_multihome_jobs sctp_multihome_jobs; 1688 }; 1689 1690 struct pf_sctp_multihome_job { 1691 TAILQ_ENTRY(pf_sctp_multihome_job) next; 1692 struct pf_pdesc pd; 1693 struct pf_addr src; 1694 struct pf_addr dst; 1695 int op; 1696 }; 1697 1698 #endif 1699 1700 /* flags for RDR options */ 1701 #define PF_DPORT_RANGE 0x01 /* Dest port uses range */ 1702 #define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */ 1703 1704 /* UDP state enumeration */ 1705 #define PFUDPS_NO_TRAFFIC 0 1706 #define PFUDPS_SINGLE 1 1707 #define PFUDPS_MULTIPLE 2 1708 1709 #define PFUDPS_NSTATES 3 /* number of state levels */ 1710 1711 #define PFUDPS_NAMES { \ 1712 "NO_TRAFFIC", \ 1713 "SINGLE", \ 1714 "MULTIPLE", \ 1715 NULL \ 1716 } 1717 1718 /* Other protocol state enumeration */ 1719 #define PFOTHERS_NO_TRAFFIC 0 1720 #define PFOTHERS_SINGLE 1 1721 #define PFOTHERS_MULTIPLE 2 1722 1723 #define PFOTHERS_NSTATES 3 /* number of state levels */ 1724 1725 #define PFOTHERS_NAMES { \ 1726 "NO_TRAFFIC", \ 1727 "SINGLE", \ 1728 "MULTIPLE", \ 1729 NULL \ 1730 } 1731 1732 #define ACTION_SET(a, x) \ 1733 do { \ 1734 if ((a) != NULL) \ 1735 *(a) = (x); \ 1736 } while (0) 1737 1738 #define REASON_SET(a, x) \ 1739 do { \ 1740 if ((a) != NULL) \ 1741 *(a) = (x); \ 1742 if (x < PFRES_MAX) \ 1743 counter_u64_add(V_pf_status.counters[x], 1); \ 1744 } while (0) 1745 1746 enum pf_syncookies_mode { 1747 PF_SYNCOOKIES_NEVER = 0, 1748 PF_SYNCOOKIES_ALWAYS = 1, 1749 PF_SYNCOOKIES_ADAPTIVE = 2, 1750 PF_SYNCOOKIES_MODE_MAX = PF_SYNCOOKIES_ADAPTIVE 1751 }; 1752 1753 #define PF_SYNCOOKIES_HIWATPCT 25 1754 #define PF_SYNCOOKIES_LOWATPCT (PF_SYNCOOKIES_HIWATPCT / 2) 1755 1756 #ifdef _KERNEL 1757 struct pf_kstatus { 1758 counter_u64_t counters[PFRES_MAX]; /* reason for passing/dropping */ 1759 counter_u64_t lcounters[KLCNT_MAX]; /* limit counters */ 1760 struct pf_counter_u64 fcounters[FCNT_MAX]; /* state operation counters */ 1761 counter_u64_t scounters[SCNT_MAX]; /* src_node operation counters */ 1762 uint32_t states; 1763 uint32_t src_nodes; 1764 uint32_t running; 1765 uint32_t since; 1766 uint32_t debug; 1767 uint32_t hostid; 1768 char ifname[IFNAMSIZ]; 1769 uint8_t pf_chksum[PF_MD5_DIGEST_LENGTH]; 1770 bool keep_counters; 1771 enum pf_syncookies_mode syncookies_mode; 1772 bool syncookies_active; 1773 uint64_t syncookies_inflight[2]; 1774 uint32_t states_halfopen; 1775 uint32_t reass; 1776 }; 1777 #endif 1778 1779 struct pf_divert { 1780 union { 1781 struct in_addr ipv4; 1782 struct in6_addr ipv6; 1783 } addr; 1784 u_int16_t port; 1785 }; 1786 1787 #define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */ 1788 #define PFR_KENTRY_HIWAT 200000 /* Number of table entries */ 1789 1790 struct pf_fragment_tag { 1791 uint16_t ft_hdrlen; /* header length of reassembled pkt */ 1792 uint16_t ft_extoff; /* last extension header offset or 0 */ 1793 uint16_t ft_maxlen; /* maximum fragment payload length */ 1794 uint32_t ft_id; /* fragment id */ 1795 }; 1796 1797 /* 1798 * Limit the length of the fragment queue traversal. Remember 1799 * search entry points based on the fragment offset. 1800 */ 1801 #define PF_FRAG_ENTRY_POINTS 16 1802 1803 /* 1804 * The number of entries in the fragment queue must be limited 1805 * to avoid DoS by linear searching. Instead of a global limit, 1806 * use a limit per entry point. For large packets these sum up. 1807 */ 1808 #define PF_FRAG_ENTRY_LIMIT 64 1809 1810 /* 1811 * ioctl parameter structures 1812 */ 1813 1814 struct pfioc_pooladdr { 1815 u_int32_t action; 1816 u_int32_t ticket; 1817 u_int32_t nr; 1818 u_int32_t r_num; 1819 u_int8_t r_action; 1820 u_int8_t r_last; 1821 u_int8_t af; 1822 char anchor[MAXPATHLEN]; 1823 struct pf_pooladdr addr; 1824 }; 1825 1826 struct pfioc_rule { 1827 u_int32_t action; 1828 u_int32_t ticket; 1829 u_int32_t pool_ticket; 1830 u_int32_t nr; 1831 char anchor[MAXPATHLEN]; 1832 char anchor_call[MAXPATHLEN]; 1833 struct pf_rule rule; 1834 }; 1835 1836 struct pfioc_natlook { 1837 struct pf_addr saddr; 1838 struct pf_addr daddr; 1839 struct pf_addr rsaddr; 1840 struct pf_addr rdaddr; 1841 u_int16_t sport; 1842 u_int16_t dport; 1843 u_int16_t rsport; 1844 u_int16_t rdport; 1845 sa_family_t af; 1846 u_int8_t proto; 1847 u_int8_t direction; 1848 }; 1849 1850 struct pfioc_state { 1851 struct pfsync_state_1301 state; 1852 }; 1853 1854 struct pfioc_src_node_kill { 1855 sa_family_t psnk_af; 1856 struct pf_rule_addr psnk_src; 1857 struct pf_rule_addr psnk_dst; 1858 u_int psnk_killed; 1859 }; 1860 1861 #ifdef _KERNEL 1862 struct pf_kstate_kill { 1863 struct pf_state_cmp psk_pfcmp; 1864 sa_family_t psk_af; 1865 int psk_proto; 1866 struct pf_rule_addr psk_src; 1867 struct pf_rule_addr psk_dst; 1868 struct pf_rule_addr psk_rt_addr; 1869 char psk_ifname[IFNAMSIZ]; 1870 char psk_label[PF_RULE_LABEL_SIZE]; 1871 u_int psk_killed; 1872 bool psk_kill_match; 1873 bool psk_nat; 1874 }; 1875 #endif 1876 1877 struct pfioc_state_kill { 1878 struct pf_state_cmp psk_pfcmp; 1879 sa_family_t psk_af; 1880 int psk_proto; 1881 struct pf_rule_addr psk_src; 1882 struct pf_rule_addr psk_dst; 1883 char psk_ifname[IFNAMSIZ]; 1884 char psk_label[PF_RULE_LABEL_SIZE]; 1885 u_int psk_killed; 1886 }; 1887 1888 struct pfioc_states { 1889 int ps_len; 1890 union { 1891 void *ps_buf; 1892 struct pfsync_state_1301 *ps_states; 1893 }; 1894 }; 1895 1896 struct pfioc_states_v2 { 1897 int ps_len; 1898 uint64_t ps_req_version; 1899 union { 1900 void *ps_buf; 1901 struct pf_state_export *ps_states; 1902 }; 1903 }; 1904 1905 struct pfioc_src_nodes { 1906 int psn_len; 1907 union { 1908 void *psn_buf; 1909 struct pf_src_node *psn_src_nodes; 1910 }; 1911 }; 1912 1913 struct pfioc_if { 1914 char ifname[IFNAMSIZ]; 1915 }; 1916 1917 struct pfioc_tm { 1918 int timeout; 1919 int seconds; 1920 }; 1921 1922 struct pfioc_limit { 1923 int index; 1924 unsigned limit; 1925 }; 1926 1927 struct pfioc_altq_v0 { 1928 u_int32_t action; 1929 u_int32_t ticket; 1930 u_int32_t nr; 1931 struct pf_altq_v0 altq; 1932 }; 1933 1934 struct pfioc_altq_v1 { 1935 u_int32_t action; 1936 u_int32_t ticket; 1937 u_int32_t nr; 1938 /* 1939 * Placed here so code that only uses the above parameters can be 1940 * written entirely in terms of the v0 or v1 type. 1941 */ 1942 u_int32_t version; 1943 struct pf_altq_v1 altq; 1944 }; 1945 1946 /* 1947 * Latest version of struct pfioc_altq_vX. This must move in lock-step with 1948 * the latest version of struct pf_altq_vX as it has that struct as a 1949 * member. 1950 */ 1951 #define PFIOC_ALTQ_VERSION PF_ALTQ_VERSION 1952 1953 struct pfioc_qstats_v0 { 1954 u_int32_t ticket; 1955 u_int32_t nr; 1956 void *buf; 1957 int nbytes; 1958 u_int8_t scheduler; 1959 }; 1960 1961 struct pfioc_qstats_v1 { 1962 u_int32_t ticket; 1963 u_int32_t nr; 1964 void *buf; 1965 int nbytes; 1966 u_int8_t scheduler; 1967 /* 1968 * Placed here so code that only uses the above parameters can be 1969 * written entirely in terms of the v0 or v1 type. 1970 */ 1971 u_int32_t version; /* Requested version of stats struct */ 1972 }; 1973 1974 /* Latest version of struct pfioc_qstats_vX */ 1975 #define PFIOC_QSTATS_VERSION 1 1976 1977 struct pfioc_ruleset { 1978 u_int32_t nr; 1979 char path[MAXPATHLEN]; 1980 char name[PF_ANCHOR_NAME_SIZE]; 1981 }; 1982 1983 #define PF_RULESET_ALTQ (PF_RULESET_MAX) 1984 #define PF_RULESET_TABLE (PF_RULESET_MAX+1) 1985 #define PF_RULESET_ETH (PF_RULESET_MAX+2) 1986 struct pfioc_trans { 1987 int size; /* number of elements */ 1988 int esize; /* size of each element in bytes */ 1989 struct pfioc_trans_e { 1990 int rs_num; 1991 char anchor[MAXPATHLEN]; 1992 u_int32_t ticket; 1993 } *array; 1994 }; 1995 1996 #define PFR_FLAG_ATOMIC 0x00000001 /* unused */ 1997 #define PFR_FLAG_DUMMY 0x00000002 1998 #define PFR_FLAG_FEEDBACK 0x00000004 1999 #define PFR_FLAG_CLSTATS 0x00000008 2000 #define PFR_FLAG_ADDRSTOO 0x00000010 2001 #define PFR_FLAG_REPLACE 0x00000020 2002 #define PFR_FLAG_ALLRSETS 0x00000040 2003 #define PFR_FLAG_ALLMASK 0x0000007F 2004 #ifdef _KERNEL 2005 #define PFR_FLAG_USERIOCTL 0x10000000 2006 #endif 2007 2008 struct pfioc_table { 2009 struct pfr_table pfrio_table; 2010 void *pfrio_buffer; 2011 int pfrio_esize; 2012 int pfrio_size; 2013 int pfrio_size2; 2014 int pfrio_nadd; 2015 int pfrio_ndel; 2016 int pfrio_nchange; 2017 int pfrio_flags; 2018 u_int32_t pfrio_ticket; 2019 }; 2020 #define pfrio_exists pfrio_nadd 2021 #define pfrio_nzero pfrio_nadd 2022 #define pfrio_nmatch pfrio_nadd 2023 #define pfrio_naddr pfrio_size2 2024 #define pfrio_setflag pfrio_size2 2025 #define pfrio_clrflag pfrio_nadd 2026 2027 struct pfioc_iface { 2028 char pfiio_name[IFNAMSIZ]; 2029 void *pfiio_buffer; 2030 int pfiio_esize; 2031 int pfiio_size; 2032 int pfiio_nzero; 2033 int pfiio_flags; 2034 }; 2035 2036 /* 2037 * ioctl operations 2038 */ 2039 2040 #define DIOCSTART _IO ('D', 1) 2041 #define DIOCSTOP _IO ('D', 2) 2042 #define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule) 2043 #define DIOCADDRULENV _IOWR('D', 4, struct pfioc_nv) 2044 #define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule) 2045 #define DIOCGETRULENV _IOWR('D', 7, struct pfioc_nv) 2046 /* XXX cut 8 - 17 */ 2047 #define DIOCCLRSTATESNV _IOWR('D', 18, struct pfioc_nv) 2048 #define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state) 2049 #define DIOCGETSTATENV _IOWR('D', 19, struct pfioc_nv) 2050 #define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if) 2051 #define DIOCGETSTATUSNV _IOWR('D', 21, struct pfioc_nv) 2052 #define DIOCCLRSTATUS _IO ('D', 22) 2053 #define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook) 2054 #define DIOCSETDEBUG _IOWR('D', 24, u_int32_t) 2055 #ifdef COMPAT_FREEBSD14 2056 #define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states) 2057 #endif 2058 #define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule) 2059 /* XXX cut 26 - 28 */ 2060 #define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm) 2061 #define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm) 2062 #define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state) 2063 #define DIOCCLRRULECTRS _IO ('D', 38) 2064 #define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit) 2065 #define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit) 2066 #define DIOCKILLSTATESNV _IOWR('D', 41, struct pfioc_nv) 2067 #define DIOCSTARTALTQ _IO ('D', 42) 2068 #define DIOCSTOPALTQ _IO ('D', 43) 2069 #define DIOCADDALTQV0 _IOWR('D', 45, struct pfioc_altq_v0) 2070 #define DIOCADDALTQV1 _IOWR('D', 45, struct pfioc_altq_v1) 2071 #define DIOCGETALTQSV0 _IOWR('D', 47, struct pfioc_altq_v0) 2072 #define DIOCGETALTQSV1 _IOWR('D', 47, struct pfioc_altq_v1) 2073 #define DIOCGETALTQV0 _IOWR('D', 48, struct pfioc_altq_v0) 2074 #define DIOCGETALTQV1 _IOWR('D', 48, struct pfioc_altq_v1) 2075 #define DIOCCHANGEALTQV0 _IOWR('D', 49, struct pfioc_altq_v0) 2076 #define DIOCCHANGEALTQV1 _IOWR('D', 49, struct pfioc_altq_v1) 2077 #define DIOCGETQSTATSV0 _IOWR('D', 50, struct pfioc_qstats_v0) 2078 #define DIOCGETQSTATSV1 _IOWR('D', 50, struct pfioc_qstats_v1) 2079 #define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr) 2080 #define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr) 2081 #define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr) 2082 #define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr) 2083 #define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr) 2084 /* XXX cut 55 - 57 */ 2085 #define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset) 2086 #define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset) 2087 #define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table) 2088 #define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table) 2089 #define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table) 2090 #define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table) 2091 #define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table) 2092 #define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table) 2093 #define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table) 2094 #define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table) 2095 #define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table) 2096 #define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table) 2097 #define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table) 2098 #define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table) 2099 #define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table) 2100 #define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table) 2101 #define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table) 2102 #define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table) 2103 #define DIOCOSFPFLUSH _IO('D', 78) 2104 #define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl) 2105 #define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl) 2106 #define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans) 2107 #define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans) 2108 #define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans) 2109 #define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes) 2110 #define DIOCCLRSRCNODES _IO('D', 85) 2111 #define DIOCSETHOSTID _IOWR('D', 86, u_int32_t) 2112 #define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface) 2113 #define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface) 2114 #define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface) 2115 #define DIOCKILLSRCNODES _IOWR('D', 91, struct pfioc_src_node_kill) 2116 #define DIOCGIFSPEEDV0 _IOWR('D', 92, struct pf_ifspeed_v0) 2117 #define DIOCGIFSPEEDV1 _IOWR('D', 92, struct pf_ifspeed_v1) 2118 #ifdef COMPAT_FREEBSD14 2119 #define DIOCGETSTATESV2 _IOWR('D', 93, struct pfioc_states_v2) 2120 #endif 2121 #define DIOCGETSYNCOOKIES _IOWR('D', 94, struct pfioc_nv) 2122 #define DIOCSETSYNCOOKIES _IOWR('D', 95, struct pfioc_nv) 2123 #define DIOCKEEPCOUNTERS _IOWR('D', 96, struct pfioc_nv) 2124 #define DIOCKEEPCOUNTERS_FREEBSD13 _IOWR('D', 92, struct pfioc_nv) 2125 #define DIOCADDETHRULE _IOWR('D', 97, struct pfioc_nv) 2126 #define DIOCGETETHRULE _IOWR('D', 98, struct pfioc_nv) 2127 #define DIOCGETETHRULES _IOWR('D', 99, struct pfioc_nv) 2128 #define DIOCGETETHRULESETS _IOWR('D', 100, struct pfioc_nv) 2129 #define DIOCGETETHRULESET _IOWR('D', 101, struct pfioc_nv) 2130 #define DIOCSETREASS _IOWR('D', 102, u_int32_t) 2131 2132 struct pf_ifspeed_v0 { 2133 char ifname[IFNAMSIZ]; 2134 u_int32_t baudrate; 2135 }; 2136 2137 struct pf_ifspeed_v1 { 2138 char ifname[IFNAMSIZ]; 2139 u_int32_t baudrate32; 2140 /* layout identical to struct pf_ifspeed_v0 up to this point */ 2141 u_int64_t baudrate; 2142 }; 2143 2144 /* Latest version of struct pf_ifspeed_vX */ 2145 #define PF_IFSPEED_VERSION 1 2146 2147 /* 2148 * Compatibility and convenience macros 2149 */ 2150 #ifndef _KERNEL 2151 #ifdef PFIOC_USE_LATEST 2152 /* 2153 * Maintaining in-tree consumers of the ioctl interface is easier when that 2154 * code can be written in terms old names that refer to the latest interface 2155 * version as that reduces the required changes in the consumers to those 2156 * that are functionally necessary to accommodate a new interface version. 2157 */ 2158 #define pfioc_altq __CONCAT(pfioc_altq_v, PFIOC_ALTQ_VERSION) 2159 #define pfioc_qstats __CONCAT(pfioc_qstats_v, PFIOC_QSTATS_VERSION) 2160 #define pf_ifspeed __CONCAT(pf_ifspeed_v, PF_IFSPEED_VERSION) 2161 2162 #define DIOCADDALTQ __CONCAT(DIOCADDALTQV, PFIOC_ALTQ_VERSION) 2163 #define DIOCGETALTQS __CONCAT(DIOCGETALTQSV, PFIOC_ALTQ_VERSION) 2164 #define DIOCGETALTQ __CONCAT(DIOCGETALTQV, PFIOC_ALTQ_VERSION) 2165 #define DIOCCHANGEALTQ __CONCAT(DIOCCHANGEALTQV, PFIOC_ALTQ_VERSION) 2166 #define DIOCGETQSTATS __CONCAT(DIOCGETQSTATSV, PFIOC_QSTATS_VERSION) 2167 #define DIOCGIFSPEED __CONCAT(DIOCGIFSPEEDV, PF_IFSPEED_VERSION) 2168 #else 2169 /* 2170 * When building out-of-tree code that is written for the old interface, 2171 * such as may exist in ports for example, resolve the old struct tags and 2172 * ioctl command names to the v0 versions. 2173 */ 2174 #define pfioc_altq __CONCAT(pfioc_altq_v, 0) 2175 #define pfioc_qstats __CONCAT(pfioc_qstats_v, 0) 2176 #define pf_ifspeed __CONCAT(pf_ifspeed_v, 0) 2177 2178 #define DIOCADDALTQ __CONCAT(DIOCADDALTQV, 0) 2179 #define DIOCGETALTQS __CONCAT(DIOCGETALTQSV, 0) 2180 #define DIOCGETALTQ __CONCAT(DIOCGETALTQV, 0) 2181 #define DIOCCHANGEALTQ __CONCAT(DIOCCHANGEALTQV, 0) 2182 #define DIOCGETQSTATS __CONCAT(DIOCGETQSTATSV, 0) 2183 #define DIOCGIFSPEED __CONCAT(DIOCGIFSPEEDV, 0) 2184 #endif /* PFIOC_USE_LATEST */ 2185 #endif /* _KERNEL */ 2186 2187 #ifdef _KERNEL 2188 LIST_HEAD(pf_ksrc_node_list, pf_ksrc_node); 2189 struct pf_srchash { 2190 struct pf_ksrc_node_list nodes; 2191 struct mtx lock; 2192 }; 2193 2194 struct pf_keyhash { 2195 LIST_HEAD(, pf_state_key) keys; 2196 struct mtx lock; 2197 }; 2198 2199 struct pf_idhash { 2200 LIST_HEAD(, pf_kstate) states; 2201 struct mtx lock; 2202 }; 2203 2204 struct pf_udpendpointhash { 2205 LIST_HEAD(, pf_udp_endpoint) endpoints; 2206 /* refcont is synchronized on the source endpoint's row lock */ 2207 struct mtx lock; 2208 }; 2209 2210 extern u_long pf_ioctl_maxcount; 2211 VNET_DECLARE(u_long, pf_hashmask); 2212 #define V_pf_hashmask VNET(pf_hashmask) 2213 VNET_DECLARE(u_long, pf_srchashmask); 2214 #define V_pf_srchashmask VNET(pf_srchashmask) 2215 VNET_DECLARE(u_long, pf_udpendpointhashmask); 2216 #define V_pf_udpendpointhashmask VNET(pf_udpendpointhashmask) 2217 #define PF_HASHSIZ (131072) 2218 #define PF_SRCHASHSIZ (PF_HASHSIZ/4) 2219 #define PF_UDPENDHASHSIZ (PF_HASHSIZ/4) 2220 VNET_DECLARE(struct pf_keyhash *, pf_keyhash); 2221 VNET_DECLARE(struct pf_idhash *, pf_idhash); 2222 VNET_DECLARE(struct pf_udpendpointhash *, pf_udpendpointhash); 2223 #define V_pf_keyhash VNET(pf_keyhash) 2224 #define V_pf_idhash VNET(pf_idhash) 2225 #define V_pf_udpendpointhash VNET(pf_udpendpointhash) 2226 VNET_DECLARE(struct pf_srchash *, pf_srchash); 2227 #define V_pf_srchash VNET(pf_srchash) 2228 2229 #define PF_IDHASHID(id) (be64toh(id) % (V_pf_hashmask + 1)) 2230 #define PF_IDHASH(s) PF_IDHASHID((s)->id) 2231 2232 VNET_DECLARE(void *, pf_swi_cookie); 2233 #define V_pf_swi_cookie VNET(pf_swi_cookie) 2234 VNET_DECLARE(struct intr_event *, pf_swi_ie); 2235 #define V_pf_swi_ie VNET(pf_swi_ie) 2236 2237 VNET_DECLARE(struct unrhdr64, pf_stateid); 2238 #define V_pf_stateid VNET(pf_stateid) 2239 2240 TAILQ_HEAD(pf_altqqueue, pf_altq); 2241 VNET_DECLARE(struct pf_altqqueue, pf_altqs[4]); 2242 #define V_pf_altqs VNET(pf_altqs) 2243 VNET_DECLARE(struct pf_kpalist, pf_pabuf[3]); 2244 #define V_pf_pabuf VNET(pf_pabuf) 2245 2246 VNET_DECLARE(u_int32_t, ticket_altqs_active); 2247 #define V_ticket_altqs_active VNET(ticket_altqs_active) 2248 VNET_DECLARE(u_int32_t, ticket_altqs_inactive); 2249 #define V_ticket_altqs_inactive VNET(ticket_altqs_inactive) 2250 VNET_DECLARE(int, altqs_inactive_open); 2251 #define V_altqs_inactive_open VNET(altqs_inactive_open) 2252 VNET_DECLARE(u_int32_t, ticket_pabuf); 2253 #define V_ticket_pabuf VNET(ticket_pabuf) 2254 VNET_DECLARE(struct pf_altqqueue *, pf_altqs_active); 2255 #define V_pf_altqs_active VNET(pf_altqs_active) 2256 VNET_DECLARE(struct pf_altqqueue *, pf_altq_ifs_active); 2257 #define V_pf_altq_ifs_active VNET(pf_altq_ifs_active) 2258 VNET_DECLARE(struct pf_altqqueue *, pf_altqs_inactive); 2259 #define V_pf_altqs_inactive VNET(pf_altqs_inactive) 2260 VNET_DECLARE(struct pf_altqqueue *, pf_altq_ifs_inactive); 2261 #define V_pf_altq_ifs_inactive VNET(pf_altq_ifs_inactive) 2262 2263 VNET_DECLARE(struct pf_krulequeue, pf_unlinked_rules); 2264 #define V_pf_unlinked_rules VNET(pf_unlinked_rules) 2265 2266 #ifdef PF_WANT_32_TO_64_COUNTER 2267 LIST_HEAD(allkiflist_head, pfi_kkif); 2268 VNET_DECLARE(struct allkiflist_head, pf_allkiflist); 2269 #define V_pf_allkiflist VNET(pf_allkiflist) 2270 VNET_DECLARE(size_t, pf_allkifcount); 2271 #define V_pf_allkifcount VNET(pf_allkifcount) 2272 VNET_DECLARE(struct pfi_kkif *, pf_kifmarker); 2273 #define V_pf_kifmarker VNET(pf_kifmarker) 2274 2275 LIST_HEAD(allrulelist_head, pf_krule); 2276 VNET_DECLARE(struct allrulelist_head, pf_allrulelist); 2277 #define V_pf_allrulelist VNET(pf_allrulelist) 2278 VNET_DECLARE(size_t, pf_allrulecount); 2279 #define V_pf_allrulecount VNET(pf_allrulecount) 2280 VNET_DECLARE(struct pf_krule *, pf_rulemarker); 2281 #define V_pf_rulemarker VNET(pf_rulemarker) 2282 #endif 2283 2284 void unhandled_af(int) __dead2; 2285 int pf_start(void); 2286 int pf_stop(void); 2287 void pf_initialize(void); 2288 void pf_mtag_initialize(void); 2289 void pf_mtag_cleanup(void); 2290 void pf_cleanup(void); 2291 2292 struct pf_mtag *pf_get_mtag(struct mbuf *); 2293 2294 extern void pf_calc_skip_steps(struct pf_krulequeue *); 2295 #ifdef ALTQ 2296 extern void pf_altq_ifnet_event(struct ifnet *, int); 2297 #endif 2298 VNET_DECLARE(uma_zone_t, pf_state_z); 2299 #define V_pf_state_z VNET(pf_state_z) 2300 VNET_DECLARE(uma_zone_t, pf_state_key_z); 2301 #define V_pf_state_key_z VNET(pf_state_key_z) 2302 VNET_DECLARE(uma_zone_t, pf_udp_mapping_z); 2303 #define V_pf_udp_mapping_z VNET(pf_udp_mapping_z) 2304 VNET_DECLARE(uma_zone_t, pf_state_scrub_z); 2305 #define V_pf_state_scrub_z VNET(pf_state_scrub_z) 2306 2307 extern void pf_purge_thread(void *); 2308 extern void pf_unload_vnet_purge(void); 2309 extern void pf_intr(void *); 2310 extern void pf_purge_expired_src_nodes(void); 2311 2312 extern int pf_unlink_state(struct pf_kstate *); 2313 extern int pf_state_insert(struct pfi_kkif *, 2314 struct pfi_kkif *, 2315 struct pf_state_key *, 2316 struct pf_state_key *, 2317 struct pf_kstate *); 2318 extern struct pf_kstate *pf_alloc_state(int); 2319 extern void pf_free_state(struct pf_kstate *); 2320 extern void pf_killstates(struct pf_kstate_kill *, 2321 unsigned int *); 2322 extern unsigned int pf_clear_states(const struct pf_kstate_kill *); 2323 2324 static __inline void 2325 pf_ref_state(struct pf_kstate *s) 2326 { 2327 2328 refcount_acquire(&s->refs); 2329 } 2330 2331 static __inline int 2332 pf_release_state(struct pf_kstate *s) 2333 { 2334 2335 if (refcount_release(&s->refs)) { 2336 pf_free_state(s); 2337 return (1); 2338 } else 2339 return (0); 2340 } 2341 2342 static __inline int 2343 pf_release_staten(struct pf_kstate *s, u_int n) 2344 { 2345 2346 if (refcount_releasen(&s->refs, n)) { 2347 pf_free_state(s); 2348 return (1); 2349 } else 2350 return (0); 2351 } 2352 2353 static __inline uint64_t 2354 pf_get_uptime(void) 2355 { 2356 struct timeval t; 2357 microuptime(&t); 2358 return ((t.tv_sec * 1000) + (t.tv_usec / 1000)); 2359 } 2360 2361 static __inline uint64_t 2362 pf_get_time(void) 2363 { 2364 struct timeval t; 2365 microtime(&t); 2366 return ((t.tv_sec * 1000) + (t.tv_usec / 1000)); 2367 } 2368 2369 extern struct pf_kstate *pf_find_state_byid(uint64_t, uint32_t); 2370 extern struct pf_kstate *pf_find_state_all( 2371 const struct pf_state_key_cmp *, 2372 u_int, int *); 2373 extern bool pf_find_state_all_exists( 2374 const struct pf_state_key_cmp *, 2375 u_int); 2376 extern struct pf_udp_mapping *pf_udp_mapping_find(struct pf_udp_endpoint_cmp 2377 *endpoint); 2378 extern struct pf_udp_mapping *pf_udp_mapping_create(sa_family_t af, 2379 struct pf_addr *src_addr, uint16_t src_port, 2380 struct pf_addr *nat_addr, uint16_t nat_port); 2381 extern int pf_udp_mapping_insert(struct pf_udp_mapping 2382 *mapping); 2383 extern void pf_udp_mapping_release(struct pf_udp_mapping 2384 *mapping); 2385 uint32_t pf_hashsrc(struct pf_addr *, sa_family_t); 2386 extern bool pf_src_node_exists(struct pf_ksrc_node **, 2387 struct pf_srchash *); 2388 extern struct pf_ksrc_node *pf_find_src_node(struct pf_addr *, 2389 struct pf_krule *, sa_family_t, 2390 struct pf_srchash **, pf_sn_types_t, bool); 2391 extern void pf_unlink_src_node(struct pf_ksrc_node *); 2392 extern u_int pf_free_src_nodes(struct pf_ksrc_node_list *); 2393 extern void pf_print_state(struct pf_kstate *); 2394 extern void pf_print_flags(uint16_t); 2395 extern int pf_addr_wrap_neq(struct pf_addr_wrap *, 2396 struct pf_addr_wrap *); 2397 extern u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t, 2398 u_int8_t); 2399 extern u_int16_t pf_proto_cksum_fixup(struct mbuf *, u_int16_t, 2400 u_int16_t, u_int16_t, u_int8_t); 2401 2402 VNET_DECLARE(struct ifnet *, sync_ifp); 2403 #define V_sync_ifp VNET(sync_ifp); 2404 VNET_DECLARE(struct pf_krule, pf_default_rule); 2405 #define V_pf_default_rule VNET(pf_default_rule) 2406 extern void pf_addrcpy(struct pf_addr *, const struct pf_addr *, 2407 sa_family_t); 2408 void pf_free_rule(struct pf_krule *); 2409 2410 int pf_test_eth(int, int, struct ifnet *, struct mbuf **, struct inpcb *); 2411 int pf_scan_sctp(struct pf_pdesc *); 2412 #if defined(INET) || defined(INET6) 2413 int pf_test(sa_family_t, int, int, struct ifnet *, struct mbuf **, struct inpcb *, 2414 struct pf_rule_actions *); 2415 #endif 2416 #ifdef INET 2417 int pf_normalize_ip(u_short *, struct pf_pdesc *); 2418 #endif /* INET */ 2419 2420 #ifdef INET6 2421 int pf_normalize_ip6(int, u_short *, struct pf_pdesc *); 2422 void pf_poolmask(struct pf_addr *, struct pf_addr*, 2423 struct pf_addr *, struct pf_addr *, sa_family_t); 2424 void pf_addr_inc(struct pf_addr *, sa_family_t); 2425 int pf_max_frag_size(struct mbuf *); 2426 int pf_refragment6(struct ifnet *, struct mbuf **, struct m_tag *, 2427 struct ifnet *, bool); 2428 #endif /* INET6 */ 2429 2430 int pf_multihome_scan_init(int, int, struct pf_pdesc *); 2431 int pf_multihome_scan_asconf(int, int, struct pf_pdesc *); 2432 2433 u_int32_t pf_new_isn(struct pf_kstate *); 2434 void *pf_pull_hdr(const struct mbuf *, int, void *, int, u_short *, u_short *, 2435 sa_family_t); 2436 void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t); 2437 void pf_change_proto_a(struct mbuf *, void *, u_int16_t *, u_int32_t, 2438 u_int8_t); 2439 void pf_change_tcp_a(struct mbuf *, void *, u_int16_t *, u_int32_t); 2440 void pf_patch_16_unaligned(struct mbuf *, u_int16_t *, void *, u_int16_t, 2441 bool, u_int8_t); 2442 void pf_patch_32_unaligned(struct mbuf *, u_int16_t *, void *, u_int32_t, 2443 bool, u_int8_t); 2444 void pf_send_deferred_syn(struct pf_kstate *); 2445 int pf_match_addr(u_int8_t, const struct pf_addr *, 2446 const struct pf_addr *, const struct pf_addr *, sa_family_t); 2447 int pf_match_addr_range(const struct pf_addr *, const struct pf_addr *, 2448 const struct pf_addr *, sa_family_t); 2449 int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t); 2450 2451 void pf_normalize_init(void); 2452 void pf_normalize_cleanup(void); 2453 int pf_normalize_tcp(struct pf_pdesc *); 2454 void pf_normalize_tcp_cleanup(struct pf_kstate *); 2455 int pf_normalize_tcp_init(struct pf_pdesc *, 2456 struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *); 2457 int pf_normalize_tcp_stateful(struct pf_pdesc *, 2458 u_short *, struct tcphdr *, struct pf_kstate *, 2459 struct pf_state_peer *, struct pf_state_peer *, int *); 2460 int pf_normalize_sctp_init(struct pf_pdesc *, 2461 struct pf_state_peer *, struct pf_state_peer *); 2462 int pf_normalize_sctp(struct pf_pdesc *); 2463 u_int32_t 2464 pf_state_expires(const struct pf_kstate *); 2465 void pf_purge_expired_fragments(void); 2466 void pf_purge_fragments(uint32_t); 2467 int pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kkif *, 2468 int); 2469 int pf_socket_lookup(struct pf_pdesc *); 2470 struct pf_state_key *pf_alloc_state_key(int); 2471 int pf_translate(struct pf_pdesc *, struct pf_addr *, u_int16_t, 2472 struct pf_addr *, u_int16_t, u_int16_t, int); 2473 int pf_translate_af(struct pf_pdesc *); 2474 void pfr_initialize(void); 2475 void pfr_cleanup(void); 2476 int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t); 2477 void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t, 2478 u_int64_t, int, int, int); 2479 int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, sa_family_t, 2480 pf_addr_filter_func_t); 2481 void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *); 2482 struct pfr_ktable * 2483 pfr_attach_table(struct pf_kruleset *, char *); 2484 struct pfr_ktable * 2485 pfr_eth_attach_table(struct pf_keth_ruleset *, char *); 2486 void pfr_detach_table(struct pfr_ktable *); 2487 int pfr_clr_tables(struct pfr_table *, int *, int); 2488 int pfr_add_tables(struct pfr_table *, int, int *, int); 2489 int pfr_del_tables(struct pfr_table *, int, int *, int); 2490 int pfr_table_count(struct pfr_table *, int); 2491 int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int); 2492 int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int); 2493 int pfr_clr_tstats(struct pfr_table *, int, int *, int); 2494 int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int); 2495 int pfr_clr_addrs(struct pfr_table *, int *, int); 2496 int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *, time_t); 2497 int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 2498 int); 2499 int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 2500 int); 2501 int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 2502 int *, int *, int *, int, u_int32_t); 2503 int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int); 2504 int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int); 2505 int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *, 2506 int); 2507 int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 2508 int); 2509 int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int); 2510 int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int); 2511 int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int); 2512 int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *, 2513 int *, u_int32_t, int); 2514 2515 MALLOC_DECLARE(PFI_MTYPE); 2516 VNET_DECLARE(struct pfi_kkif *, pfi_all); 2517 #define V_pfi_all VNET(pfi_all) 2518 2519 void pfi_initialize(void); 2520 void pfi_initialize_vnet(void); 2521 void pfi_cleanup(void); 2522 void pfi_cleanup_vnet(void); 2523 void pfi_kkif_ref(struct pfi_kkif *); 2524 void pfi_kkif_unref(struct pfi_kkif *); 2525 struct pfi_kkif *pfi_kkif_find(const char *); 2526 struct pfi_kkif *pfi_kkif_attach(struct pfi_kkif *, const char *); 2527 int pfi_kkif_match(struct pfi_kkif *, struct pfi_kkif *); 2528 void pfi_kkif_purge(void); 2529 int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *, 2530 sa_family_t); 2531 int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t); 2532 void pfi_dynaddr_remove(struct pfi_dynaddr *); 2533 void pfi_dynaddr_copyout(struct pf_addr_wrap *); 2534 void pfi_update_status(const char *, struct pf_status *); 2535 void pfi_get_ifaces(const char *, struct pfi_kif *, int *); 2536 int pfi_set_flags(const char *, int); 2537 int pfi_clear_flags(const char *, int); 2538 2539 int pf_match_tag(struct mbuf *, struct pf_krule *, int *, int); 2540 int pf_tag_packet(struct pf_pdesc *, int); 2541 int pf_addr_cmp(struct pf_addr *, struct pf_addr *, 2542 sa_family_t); 2543 2544 u_int16_t pf_get_mss(struct pf_pdesc *); 2545 u_int8_t pf_get_wscale(struct pf_pdesc *); 2546 struct mbuf *pf_build_tcp(const struct pf_krule *, sa_family_t, 2547 const struct pf_addr *, const struct pf_addr *, 2548 u_int16_t, u_int16_t, u_int32_t, u_int32_t, 2549 u_int8_t, u_int16_t, u_int16_t, u_int8_t, int, 2550 u_int16_t, u_int16_t, int); 2551 void pf_send_tcp(const struct pf_krule *, sa_family_t, 2552 const struct pf_addr *, const struct pf_addr *, 2553 u_int16_t, u_int16_t, u_int32_t, u_int32_t, 2554 u_int8_t, u_int16_t, u_int16_t, u_int8_t, int, 2555 u_int16_t, u_int16_t, int); 2556 2557 void pf_syncookies_init(void); 2558 void pf_syncookies_cleanup(void); 2559 int pf_get_syncookies(struct pfioc_nv *); 2560 int pf_set_syncookies(struct pfioc_nv *); 2561 int pf_synflood_check(struct pf_pdesc *); 2562 void pf_syncookie_send(struct pf_pdesc *); 2563 bool pf_syncookie_check(struct pf_pdesc *); 2564 u_int8_t pf_syncookie_validate(struct pf_pdesc *); 2565 struct mbuf * pf_syncookie_recreate_syn(struct pf_pdesc *); 2566 2567 VNET_DECLARE(struct pf_kstatus, pf_status); 2568 #define V_pf_status VNET(pf_status) 2569 2570 struct pf_limit { 2571 uma_zone_t zone; 2572 u_int limit; 2573 }; 2574 VNET_DECLARE(struct pf_limit, pf_limits[PF_LIMIT_MAX]); 2575 #define V_pf_limits VNET(pf_limits) 2576 2577 #endif /* _KERNEL */ 2578 2579 #ifdef _KERNEL 2580 struct pf_nl_pooladdr { 2581 u_int32_t action; 2582 u_int32_t ticket; 2583 u_int32_t nr; 2584 u_int32_t r_num; 2585 u_int8_t r_action; 2586 u_int8_t r_last; 2587 u_int8_t af; 2588 char anchor[MAXPATHLEN]; 2589 struct pf_pooladdr addr; 2590 /* Above this is identical to pfioc_pooladdr */ 2591 int which; 2592 }; 2593 2594 VNET_DECLARE(struct pf_kanchor_global, pf_anchors); 2595 #define V_pf_anchors VNET(pf_anchors) 2596 VNET_DECLARE(struct pf_kanchor, pf_main_anchor); 2597 #define V_pf_main_anchor VNET(pf_main_anchor) 2598 VNET_DECLARE(struct pf_keth_anchor_global, pf_keth_anchors); 2599 #define V_pf_keth_anchors VNET(pf_keth_anchors) 2600 #define pf_main_ruleset V_pf_main_anchor.ruleset 2601 2602 VNET_DECLARE(struct pf_keth_anchor, pf_main_keth_anchor); 2603 #define V_pf_main_keth_anchor VNET(pf_main_keth_anchor) 2604 VNET_DECLARE(struct pf_keth_ruleset*, pf_keth); 2605 #define V_pf_keth VNET(pf_keth) 2606 2607 void pf_init_kruleset(struct pf_kruleset *); 2608 void pf_init_keth(struct pf_keth_ruleset *); 2609 int pf_kanchor_setup(struct pf_krule *, 2610 const struct pf_kruleset *, const char *); 2611 int pf_kanchor_copyout(const struct pf_kruleset *, 2612 const struct pf_krule *, char *, size_t); 2613 int pf_kanchor_nvcopyout(const struct pf_kruleset *, 2614 const struct pf_krule *, nvlist_t *); 2615 void pf_kanchor_remove(struct pf_krule *); 2616 void pf_remove_if_empty_kruleset(struct pf_kruleset *); 2617 struct pf_kruleset *pf_find_kruleset(const char *); 2618 struct pf_kruleset *pf_find_or_create_kruleset(const char *); 2619 void pf_rs_initialize(void); 2620 2621 2622 struct pf_krule *pf_krule_alloc(void); 2623 2624 void pf_remove_if_empty_keth_ruleset( 2625 struct pf_keth_ruleset *); 2626 struct pf_keth_ruleset *pf_find_keth_ruleset(const char *); 2627 struct pf_keth_anchor *pf_find_keth_anchor(const char *); 2628 int pf_keth_anchor_setup(struct pf_keth_rule *, 2629 const struct pf_keth_ruleset *, const char *); 2630 int pf_keth_anchor_nvcopyout( 2631 const struct pf_keth_ruleset *, 2632 const struct pf_keth_rule *, nvlist_t *); 2633 struct pf_keth_ruleset *pf_find_or_create_keth_ruleset(const char *); 2634 void pf_keth_anchor_remove(struct pf_keth_rule *); 2635 2636 int pf_ioctl_getrules(struct pfioc_rule *); 2637 int pf_ioctl_addrule(struct pf_krule *, uint32_t, 2638 uint32_t, const char *, const char *, uid_t uid, 2639 pid_t); 2640 void pf_ioctl_clear_status(void); 2641 int pf_ioctl_get_timeout(int, int *); 2642 int pf_ioctl_set_timeout(int, int, int *); 2643 int pf_ioctl_get_limit(int, unsigned int *); 2644 int pf_ioctl_set_limit(int, unsigned int, unsigned int *); 2645 int pf_ioctl_begin_addrs(uint32_t *); 2646 int pf_ioctl_add_addr(struct pf_nl_pooladdr *); 2647 int pf_ioctl_get_addrs(struct pf_nl_pooladdr *); 2648 int pf_ioctl_get_addr(struct pf_nl_pooladdr *); 2649 int pf_ioctl_get_rulesets(struct pfioc_ruleset *); 2650 int pf_ioctl_get_ruleset(struct pfioc_ruleset *); 2651 2652 void pf_krule_free(struct pf_krule *); 2653 void pf_krule_clear_counters(struct pf_krule *); 2654 void pf_addr_copyout(struct pf_addr_wrap *); 2655 #endif 2656 2657 /* The fingerprint functions can be linked into userland programs (tcpdump) */ 2658 int pf_osfp_add(struct pf_osfp_ioctl *); 2659 #ifdef _KERNEL 2660 struct pf_osfp_enlist * 2661 pf_osfp_fingerprint(struct pf_pdesc *, const struct tcphdr *); 2662 #endif /* _KERNEL */ 2663 void pf_osfp_flush(void); 2664 int pf_osfp_get(struct pf_osfp_ioctl *); 2665 int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t); 2666 2667 #ifdef _KERNEL 2668 void pf_print_host(struct pf_addr *, u_int16_t, sa_family_t); 2669 2670 void pf_step_into_anchor(struct pf_kanchor_stackframe *, int *, 2671 struct pf_kruleset **, int, struct pf_krule **, 2672 struct pf_krule **); 2673 int pf_step_out_of_anchor(struct pf_kanchor_stackframe *, int *, 2674 struct pf_kruleset **, int, struct pf_krule **, 2675 struct pf_krule **, int *); 2676 void pf_step_into_keth_anchor(struct pf_keth_anchor_stackframe *, 2677 int *, struct pf_keth_ruleset **, 2678 struct pf_keth_rule **, struct pf_keth_rule **, 2679 int *); 2680 int pf_step_out_of_keth_anchor(struct pf_keth_anchor_stackframe *, 2681 int *, struct pf_keth_ruleset **, 2682 struct pf_keth_rule **, struct pf_keth_rule **, 2683 int *); 2684 2685 u_short pf_map_addr(u_int8_t, struct pf_krule *, 2686 struct pf_addr *, struct pf_addr *, 2687 struct pfi_kkif **nkif, struct pf_addr *, 2688 struct pf_kpool *); 2689 u_short pf_map_addr_sn(u_int8_t, struct pf_krule *, 2690 struct pf_addr *, struct pf_addr *, 2691 struct pfi_kkif **nkif, struct pf_addr *, 2692 struct pf_ksrc_node **, struct pf_srchash **, 2693 struct pf_kpool *, pf_sn_types_t); 2694 int pf_get_transaddr_af(struct pf_krule *, 2695 struct pf_pdesc *); 2696 u_short pf_get_translation(struct pf_pdesc *, 2697 int, struct pf_state_key **, struct pf_state_key **, 2698 struct pf_kanchor_stackframe *, struct pf_krule **, 2699 struct pf_udp_mapping **udp_mapping); 2700 2701 int pf_state_key_setup(struct pf_pdesc *, 2702 u_int16_t, u_int16_t, 2703 struct pf_state_key **sk, struct pf_state_key **nk); 2704 struct pf_state_key *pf_state_key_clone(const struct pf_state_key *); 2705 void pf_rule_to_actions(struct pf_krule *, 2706 struct pf_rule_actions *); 2707 int pf_normalize_mss(struct pf_pdesc *pd); 2708 #if defined(INET) || defined(INET6) 2709 void pf_scrub(struct pf_pdesc *); 2710 #endif 2711 2712 struct pfi_kkif *pf_kkif_create(int); 2713 void pf_kkif_free(struct pfi_kkif *); 2714 void pf_kkif_zero(struct pfi_kkif *); 2715 2716 2717 /* NAT64 functions. */ 2718 int inet_nat64(int, const void *, void *, const void *, u_int8_t); 2719 int inet_nat64_inet(const void *, void *, const void *, u_int8_t); 2720 int inet_nat64_inet6(const void *, void *, const void *, u_int8_t); 2721 2722 int inet_nat46(int, const void *, void *, const void *, u_int8_t); 2723 int inet_nat46_inet(const void *, void *, const void *, u_int8_t); 2724 int inet_nat46_inet6(const void *, void *, const void *, u_int8_t); 2725 2726 #endif /* _KERNEL */ 2727 2728 #endif /* _NET_PFVAR_H_ */ 2729