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 * $FreeBSD$ 33 */ 34 35 #ifndef _NET_PFVAR_H_ 36 #define _NET_PFVAR_H_ 37 38 #include <sys/param.h> 39 #include <sys/queue.h> 40 #include <sys/counter.h> 41 #include <sys/cpuset.h> 42 #include <sys/epoch.h> 43 #include <sys/malloc.h> 44 #include <sys/nv.h> 45 #include <sys/refcount.h> 46 #include <sys/sdt.h> 47 #include <sys/sysctl.h> 48 #include <sys/smp.h> 49 #include <sys/lock.h> 50 #include <sys/rmlock.h> 51 #include <sys/tree.h> 52 #include <sys/seqc.h> 53 #include <vm/uma.h> 54 55 #include <net/if.h> 56 #include <net/ethernet.h> 57 #include <net/radix.h> 58 #include <netinet/in.h> 59 #ifdef _KERNEL 60 #include <netinet/ip.h> 61 #include <netinet/tcp.h> 62 #include <netinet/udp.h> 63 #include <netinet/ip_icmp.h> 64 #include <netinet/icmp6.h> 65 #endif 66 67 #include <netpfil/pf/pf.h> 68 #include <netpfil/pf/pf_altq.h> 69 #include <netpfil/pf/pf_mtag.h> 70 71 #ifdef _KERNEL 72 73 #if defined(__arm__) 74 #define PF_WANT_32_TO_64_COUNTER 75 #endif 76 77 /* 78 * A hybrid of 32-bit and 64-bit counters which can be used on platforms where 79 * counter(9) is very expensive. 80 * 81 * As 32-bit counters are expected to overflow, a periodic job sums them up to 82 * a saved 64-bit state. Fetching the value still walks all CPUs to get the most 83 * current snapshot. 84 */ 85 #ifdef PF_WANT_32_TO_64_COUNTER 86 struct pf_counter_u64_pcpu { 87 u_int32_t current; 88 u_int32_t snapshot; 89 }; 90 91 struct pf_counter_u64 { 92 struct pf_counter_u64_pcpu *pfcu64_pcpu; 93 u_int64_t pfcu64_value; 94 seqc_t pfcu64_seqc; 95 }; 96 97 static inline int 98 pf_counter_u64_init(struct pf_counter_u64 *pfcu64, int flags) 99 { 100 101 pfcu64->pfcu64_value = 0; 102 pfcu64->pfcu64_seqc = 0; 103 pfcu64->pfcu64_pcpu = uma_zalloc_pcpu(pcpu_zone_8, flags | M_ZERO); 104 if (__predict_false(pfcu64->pfcu64_pcpu == NULL)) 105 return (ENOMEM); 106 return (0); 107 } 108 109 static inline void 110 pf_counter_u64_deinit(struct pf_counter_u64 *pfcu64) 111 { 112 113 uma_zfree_pcpu(pcpu_zone_8, pfcu64->pfcu64_pcpu); 114 } 115 116 static inline void 117 pf_counter_u64_critical_enter(void) 118 { 119 120 critical_enter(); 121 } 122 123 static inline void 124 pf_counter_u64_critical_exit(void) 125 { 126 127 critical_exit(); 128 } 129 130 static inline void 131 pf_counter_u64_add_protected(struct pf_counter_u64 *pfcu64, uint32_t n) 132 { 133 struct pf_counter_u64_pcpu *pcpu; 134 u_int32_t val; 135 136 MPASS(curthread->td_critnest > 0); 137 pcpu = zpcpu_get(pfcu64->pfcu64_pcpu); 138 val = atomic_load_int(&pcpu->current); 139 atomic_store_int(&pcpu->current, val + n); 140 } 141 142 static inline void 143 pf_counter_u64_add(struct pf_counter_u64 *pfcu64, uint32_t n) 144 { 145 146 critical_enter(); 147 pf_counter_u64_add_protected(pfcu64, n); 148 critical_exit(); 149 } 150 151 static inline u_int64_t 152 pf_counter_u64_periodic(struct pf_counter_u64 *pfcu64) 153 { 154 struct pf_counter_u64_pcpu *pcpu; 155 u_int64_t sum; 156 u_int32_t val; 157 int cpu; 158 159 MPASS(curthread->td_critnest > 0); 160 seqc_write_begin(&pfcu64->pfcu64_seqc); 161 sum = pfcu64->pfcu64_value; 162 CPU_FOREACH(cpu) { 163 pcpu = zpcpu_get_cpu(pfcu64->pfcu64_pcpu, cpu); 164 val = atomic_load_int(&pcpu->current); 165 sum += (uint32_t)(val - pcpu->snapshot); 166 pcpu->snapshot = val; 167 } 168 pfcu64->pfcu64_value = sum; 169 seqc_write_end(&pfcu64->pfcu64_seqc); 170 return (sum); 171 } 172 173 static inline u_int64_t 174 pf_counter_u64_fetch(const struct pf_counter_u64 *pfcu64) 175 { 176 struct pf_counter_u64_pcpu *pcpu; 177 u_int64_t sum; 178 seqc_t seqc; 179 int cpu; 180 181 for (;;) { 182 seqc = seqc_read(&pfcu64->pfcu64_seqc); 183 sum = 0; 184 CPU_FOREACH(cpu) { 185 pcpu = zpcpu_get_cpu(pfcu64->pfcu64_pcpu, cpu); 186 sum += (uint32_t)(atomic_load_int(&pcpu->current) -pcpu->snapshot); 187 } 188 sum += pfcu64->pfcu64_value; 189 if (seqc_consistent(&pfcu64->pfcu64_seqc, seqc)) 190 break; 191 } 192 return (sum); 193 } 194 195 static inline void 196 pf_counter_u64_zero_protected(struct pf_counter_u64 *pfcu64) 197 { 198 struct pf_counter_u64_pcpu *pcpu; 199 int cpu; 200 201 MPASS(curthread->td_critnest > 0); 202 seqc_write_begin(&pfcu64->pfcu64_seqc); 203 CPU_FOREACH(cpu) { 204 pcpu = zpcpu_get_cpu(pfcu64->pfcu64_pcpu, cpu); 205 pcpu->snapshot = atomic_load_int(&pcpu->current); 206 } 207 pfcu64->pfcu64_value = 0; 208 seqc_write_end(&pfcu64->pfcu64_seqc); 209 } 210 211 static inline void 212 pf_counter_u64_zero(struct pf_counter_u64 *pfcu64) 213 { 214 215 critical_enter(); 216 pf_counter_u64_zero_protected(pfcu64); 217 critical_exit(); 218 } 219 #else 220 struct pf_counter_u64 { 221 counter_u64_t counter; 222 }; 223 224 static inline int 225 pf_counter_u64_init(struct pf_counter_u64 *pfcu64, int flags) 226 { 227 228 pfcu64->counter = counter_u64_alloc(flags); 229 if (__predict_false(pfcu64->counter == NULL)) 230 return (ENOMEM); 231 return (0); 232 } 233 234 static inline void 235 pf_counter_u64_deinit(struct pf_counter_u64 *pfcu64) 236 { 237 238 counter_u64_free(pfcu64->counter); 239 } 240 241 static inline void 242 pf_counter_u64_critical_enter(void) 243 { 244 245 } 246 247 static inline void 248 pf_counter_u64_critical_exit(void) 249 { 250 251 } 252 253 static inline void 254 pf_counter_u64_add_protected(struct pf_counter_u64 *pfcu64, uint32_t n) 255 { 256 257 counter_u64_add(pfcu64->counter, n); 258 } 259 260 static inline void 261 pf_counter_u64_add(struct pf_counter_u64 *pfcu64, uint32_t n) 262 { 263 264 pf_counter_u64_add_protected(pfcu64, n); 265 } 266 267 static inline u_int64_t 268 pf_counter_u64_fetch(const struct pf_counter_u64 *pfcu64) 269 { 270 271 return (counter_u64_fetch(pfcu64->counter)); 272 } 273 274 static inline void 275 pf_counter_u64_zero_protected(struct pf_counter_u64 *pfcu64) 276 { 277 278 counter_u64_zero(pfcu64->counter); 279 } 280 281 static inline void 282 pf_counter_u64_zero(struct pf_counter_u64 *pfcu64) 283 { 284 285 pf_counter_u64_zero_protected(pfcu64); 286 } 287 #endif 288 289 #define pf_get_timestamp(prule)({ \ 290 uint32_t _ts = 0; \ 291 uint32_t __ts; \ 292 int cpu; \ 293 CPU_FOREACH(cpu) { \ 294 __ts = *zpcpu_get_cpu(prule->timestamp, cpu); \ 295 if (__ts > _ts) \ 296 _ts = __ts; \ 297 } \ 298 _ts; \ 299 }) 300 301 #define pf_update_timestamp(prule) \ 302 do { \ 303 critical_enter(); \ 304 *zpcpu_get((prule)->timestamp) = time_second; \ 305 critical_exit(); \ 306 } while (0) 307 308 #define pf_timestamp_pcpu_zone (sizeof(time_t) == 4 ? pcpu_zone_4 : pcpu_zone_8) 309 _Static_assert(sizeof(time_t) == 4 || sizeof(time_t) == 8, "unexpected time_t size"); 310 311 SYSCTL_DECL(_net_pf); 312 MALLOC_DECLARE(M_PFHASH); 313 MALLOC_DECLARE(M_PF_RULE_ITEM); 314 315 SDT_PROVIDER_DECLARE(pf); 316 317 struct pfi_dynaddr { 318 TAILQ_ENTRY(pfi_dynaddr) entry; 319 struct pf_addr pfid_addr4; 320 struct pf_addr pfid_mask4; 321 struct pf_addr pfid_addr6; 322 struct pf_addr pfid_mask6; 323 struct pfr_ktable *pfid_kt; 324 struct pfi_kkif *pfid_kif; 325 int pfid_net; /* mask or 128 */ 326 int pfid_acnt4; /* address count IPv4 */ 327 int pfid_acnt6; /* address count IPv6 */ 328 sa_family_t pfid_af; /* rule af */ 329 u_int8_t pfid_iflags; /* PFI_AFLAG_* */ 330 }; 331 332 /* 333 * Address manipulation macros 334 */ 335 #define HTONL(x) (x) = htonl((__uint32_t)(x)) 336 #define HTONS(x) (x) = htons((__uint16_t)(x)) 337 #define NTOHL(x) (x) = ntohl((__uint32_t)(x)) 338 #define NTOHS(x) (x) = ntohs((__uint16_t)(x)) 339 340 #define PF_NAME "pf" 341 342 #define PF_HASHROW_ASSERT(h) mtx_assert(&(h)->lock, MA_OWNED) 343 #define PF_HASHROW_LOCK(h) mtx_lock(&(h)->lock) 344 #define PF_HASHROW_UNLOCK(h) mtx_unlock(&(h)->lock) 345 346 #ifdef INVARIANTS 347 #define PF_STATE_LOCK(s) \ 348 do { \ 349 struct pf_kstate *_s = (s); \ 350 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(_s)]; \ 351 MPASS(_s->lock == &_ih->lock); \ 352 mtx_lock(_s->lock); \ 353 } while (0) 354 #define PF_STATE_UNLOCK(s) \ 355 do { \ 356 struct pf_kstate *_s = (s); \ 357 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(_s)]; \ 358 MPASS(_s->lock == &_ih->lock); \ 359 mtx_unlock(_s->lock); \ 360 } while (0) 361 #else 362 #define PF_STATE_LOCK(s) mtx_lock(s->lock) 363 #define PF_STATE_UNLOCK(s) mtx_unlock(s->lock) 364 #endif 365 366 #ifdef INVARIANTS 367 #define PF_STATE_LOCK_ASSERT(s) \ 368 do { \ 369 struct pf_kstate *_s = (s); \ 370 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(_s)]; \ 371 MPASS(_s->lock == &_ih->lock); \ 372 PF_HASHROW_ASSERT(_ih); \ 373 } while (0) 374 #else /* !INVARIANTS */ 375 #define PF_STATE_LOCK_ASSERT(s) do {} while (0) 376 #endif /* INVARIANTS */ 377 378 #ifdef INVARIANTS 379 #define PF_SRC_NODE_LOCK(sn) \ 380 do { \ 381 struct pf_ksrc_node *_sn = (sn); \ 382 struct pf_srchash *_sh = &V_pf_srchash[ \ 383 pf_hashsrc(&_sn->addr, _sn->af)]; \ 384 MPASS(_sn->lock == &_sh->lock); \ 385 mtx_lock(_sn->lock); \ 386 } while (0) 387 #define PF_SRC_NODE_UNLOCK(sn) \ 388 do { \ 389 struct pf_ksrc_node *_sn = (sn); \ 390 struct pf_srchash *_sh = &V_pf_srchash[ \ 391 pf_hashsrc(&_sn->addr, _sn->af)]; \ 392 MPASS(_sn->lock == &_sh->lock); \ 393 mtx_unlock(_sn->lock); \ 394 } while (0) 395 #else 396 #define PF_SRC_NODE_LOCK(sn) mtx_lock((sn)->lock) 397 #define PF_SRC_NODE_UNLOCK(sn) mtx_unlock((sn)->lock) 398 #endif 399 400 #ifdef INVARIANTS 401 #define PF_SRC_NODE_LOCK_ASSERT(sn) \ 402 do { \ 403 struct pf_ksrc_node *_sn = (sn); \ 404 struct pf_srchash *_sh = &V_pf_srchash[ \ 405 pf_hashsrc(&_sn->addr, _sn->af)]; \ 406 MPASS(_sn->lock == &_sh->lock); \ 407 PF_HASHROW_ASSERT(_sh); \ 408 } while (0) 409 #else /* !INVARIANTS */ 410 #define PF_SRC_NODE_LOCK_ASSERT(sn) do {} while (0) 411 #endif /* INVARIANTS */ 412 413 extern struct mtx_padalign pf_unlnkdrules_mtx; 414 #define PF_UNLNKDRULES_LOCK() mtx_lock(&pf_unlnkdrules_mtx) 415 #define PF_UNLNKDRULES_UNLOCK() mtx_unlock(&pf_unlnkdrules_mtx) 416 #define PF_UNLNKDRULES_ASSERT() mtx_assert(&pf_unlnkdrules_mtx, MA_OWNED) 417 418 extern struct sx pf_config_lock; 419 #define PF_CONFIG_LOCK() sx_xlock(&pf_config_lock) 420 #define PF_CONFIG_UNLOCK() sx_xunlock(&pf_config_lock) 421 #define PF_CONFIG_ASSERT() sx_assert(&pf_config_lock, SA_XLOCKED) 422 423 VNET_DECLARE(struct rmlock, pf_rules_lock); 424 #define V_pf_rules_lock VNET(pf_rules_lock) 425 426 #define PF_RULES_RLOCK_TRACKER struct rm_priotracker _pf_rules_tracker 427 #define PF_RULES_RLOCK() rm_rlock(&V_pf_rules_lock, &_pf_rules_tracker) 428 #define PF_RULES_RUNLOCK() rm_runlock(&V_pf_rules_lock, &_pf_rules_tracker) 429 #define PF_RULES_WLOCK() rm_wlock(&V_pf_rules_lock) 430 #define PF_RULES_WUNLOCK() rm_wunlock(&V_pf_rules_lock) 431 #define PF_RULES_WOWNED() rm_wowned(&V_pf_rules_lock) 432 #define PF_RULES_ASSERT() rm_assert(&V_pf_rules_lock, RA_LOCKED) 433 #define PF_RULES_RASSERT() rm_assert(&V_pf_rules_lock, RA_RLOCKED) 434 #define PF_RULES_WASSERT() rm_assert(&V_pf_rules_lock, RA_WLOCKED) 435 436 extern struct mtx_padalign pf_table_stats_lock; 437 #define PF_TABLE_STATS_LOCK() mtx_lock(&pf_table_stats_lock) 438 #define PF_TABLE_STATS_UNLOCK() mtx_unlock(&pf_table_stats_lock) 439 #define PF_TABLE_STATS_OWNED() mtx_owned(&pf_table_stats_lock) 440 #define PF_TABLE_STATS_ASSERT() mtx_assert(&pf_table_stats_lock, MA_OWNED) 441 442 extern struct sx pf_end_lock; 443 444 #define PF_MODVER 1 445 #define PFLOG_MODVER 1 446 #define PFSYNC_MODVER 1 447 448 #define PFLOG_MINVER 1 449 #define PFLOG_PREFVER PFLOG_MODVER 450 #define PFLOG_MAXVER 1 451 #define PFSYNC_MINVER 1 452 #define PFSYNC_PREFVER PFSYNC_MODVER 453 #define PFSYNC_MAXVER 1 454 455 #ifdef INET 456 #ifndef INET6 457 #define PF_INET_ONLY 458 #endif /* ! INET6 */ 459 #endif /* INET */ 460 461 #ifdef INET6 462 #ifndef INET 463 #define PF_INET6_ONLY 464 #endif /* ! INET */ 465 #endif /* INET6 */ 466 467 #ifdef INET 468 #ifdef INET6 469 #define PF_INET_INET6 470 #endif /* INET6 */ 471 #endif /* INET */ 472 473 #else 474 475 #define PF_INET_INET6 476 477 #endif /* _KERNEL */ 478 479 /* Both IPv4 and IPv6 */ 480 #ifdef PF_INET_INET6 481 482 #define PF_AEQ(a, b, c) \ 483 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \ 484 (c == AF_INET6 && (a)->addr32[3] == (b)->addr32[3] && \ 485 (a)->addr32[2] == (b)->addr32[2] && \ 486 (a)->addr32[1] == (b)->addr32[1] && \ 487 (a)->addr32[0] == (b)->addr32[0])) \ 488 489 #define PF_ANEQ(a, b, c) \ 490 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \ 491 (c == AF_INET6 && ((a)->addr32[0] != (b)->addr32[0] || \ 492 (a)->addr32[1] != (b)->addr32[1] || \ 493 (a)->addr32[2] != (b)->addr32[2] || \ 494 (a)->addr32[3] != (b)->addr32[3]))) \ 495 496 #define PF_AZERO(a, c) \ 497 ((c == AF_INET && !(a)->addr32[0]) || \ 498 (c == AF_INET6 && !(a)->addr32[0] && !(a)->addr32[1] && \ 499 !(a)->addr32[2] && !(a)->addr32[3] )) \ 500 501 #define PF_MATCHA(n, a, m, b, f) \ 502 pf_match_addr(n, a, m, b, f) 503 504 #define PF_ACPY(a, b, f) \ 505 pf_addrcpy(a, b, f) 506 507 #define PF_AINC(a, f) \ 508 pf_addr_inc(a, f) 509 510 #define PF_POOLMASK(a, b, c, d, f) \ 511 pf_poolmask(a, b, c, d, f) 512 513 #else 514 515 /* Just IPv6 */ 516 517 #ifdef PF_INET6_ONLY 518 519 #define PF_AEQ(a, b, c) \ 520 ((a)->addr32[3] == (b)->addr32[3] && \ 521 (a)->addr32[2] == (b)->addr32[2] && \ 522 (a)->addr32[1] == (b)->addr32[1] && \ 523 (a)->addr32[0] == (b)->addr32[0]) \ 524 525 #define PF_ANEQ(a, b, c) \ 526 ((a)->addr32[3] != (b)->addr32[3] || \ 527 (a)->addr32[2] != (b)->addr32[2] || \ 528 (a)->addr32[1] != (b)->addr32[1] || \ 529 (a)->addr32[0] != (b)->addr32[0]) \ 530 531 #define PF_AZERO(a, c) \ 532 (!(a)->addr32[0] && \ 533 !(a)->addr32[1] && \ 534 !(a)->addr32[2] && \ 535 !(a)->addr32[3] ) \ 536 537 #define PF_MATCHA(n, a, m, b, f) \ 538 pf_match_addr(n, a, m, b, f) 539 540 #define PF_ACPY(a, b, f) \ 541 pf_addrcpy(a, b, f) 542 543 #define PF_AINC(a, f) \ 544 pf_addr_inc(a, f) 545 546 #define PF_POOLMASK(a, b, c, d, f) \ 547 pf_poolmask(a, b, c, d, f) 548 549 #else 550 551 /* Just IPv4 */ 552 #ifdef PF_INET_ONLY 553 554 #define PF_AEQ(a, b, c) \ 555 ((a)->addr32[0] == (b)->addr32[0]) 556 557 #define PF_ANEQ(a, b, c) \ 558 ((a)->addr32[0] != (b)->addr32[0]) 559 560 #define PF_AZERO(a, c) \ 561 (!(a)->addr32[0]) 562 563 #define PF_MATCHA(n, a, m, b, f) \ 564 pf_match_addr(n, a, m, b, f) 565 566 #define PF_ACPY(a, b, f) \ 567 (a)->v4.s_addr = (b)->v4.s_addr 568 569 #define PF_AINC(a, f) \ 570 do { \ 571 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \ 572 } while (0) 573 574 #define PF_POOLMASK(a, b, c, d, f) \ 575 do { \ 576 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \ 577 (((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \ 578 } while (0) 579 580 #endif /* PF_INET_ONLY */ 581 #endif /* PF_INET6_ONLY */ 582 #endif /* PF_INET_INET6 */ 583 584 /* 585 * XXX callers not FIB-aware in our version of pf yet. 586 * OpenBSD fixed it later it seems, 2010/05/07 13:33:16 claudio. 587 */ 588 #define PF_MISMATCHAW(aw, x, af, neg, ifp, rtid) \ 589 ( \ 590 (((aw)->type == PF_ADDR_NOROUTE && \ 591 pf_routable((x), (af), NULL, (rtid))) || \ 592 (((aw)->type == PF_ADDR_URPFFAILED && (ifp) != NULL && \ 593 pf_routable((x), (af), (ifp), (rtid))) || \ 594 ((aw)->type == PF_ADDR_TABLE && \ 595 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \ 596 ((aw)->type == PF_ADDR_DYNIFTL && \ 597 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \ 598 ((aw)->type == PF_ADDR_RANGE && \ 599 !pf_match_addr_range(&(aw)->v.a.addr, \ 600 &(aw)->v.a.mask, (x), (af))) || \ 601 ((aw)->type == PF_ADDR_ADDRMASK && \ 602 !PF_AZERO(&(aw)->v.a.mask, (af)) && \ 603 !PF_MATCHA(0, &(aw)->v.a.addr, \ 604 &(aw)->v.a.mask, (x), (af))))) != \ 605 (neg) \ 606 ) 607 608 #define PF_ALGNMNT(off) (((off) % 2) == 0) 609 610 #ifdef _KERNEL 611 612 struct pf_kpooladdr { 613 struct pf_addr_wrap addr; 614 TAILQ_ENTRY(pf_kpooladdr) entries; 615 char ifname[IFNAMSIZ]; 616 struct pfi_kkif *kif; 617 }; 618 619 TAILQ_HEAD(pf_kpalist, pf_kpooladdr); 620 621 struct pf_kpool { 622 struct mtx mtx; 623 struct pf_kpalist list; 624 struct pf_kpooladdr *cur; 625 struct pf_poolhashkey key; 626 struct pf_addr counter; 627 struct pf_mape_portset mape; 628 int tblidx; 629 u_int16_t proxy_port[2]; 630 u_int8_t opts; 631 }; 632 633 struct pf_rule_actions { 634 int32_t rtableid; 635 uint16_t qid; 636 uint16_t pqid; 637 uint16_t max_mss; 638 uint8_t log; 639 uint8_t set_tos; 640 uint8_t min_ttl; 641 uint16_t dnpipe; 642 uint16_t dnrpipe; /* Reverse direction pipe */ 643 uint32_t flags; 644 uint8_t set_prio[2]; 645 }; 646 647 union pf_keth_rule_ptr { 648 struct pf_keth_rule *ptr; 649 uint32_t nr; 650 }; 651 652 struct pf_keth_rule_addr { 653 uint8_t addr[ETHER_ADDR_LEN]; 654 uint8_t mask[ETHER_ADDR_LEN]; 655 bool neg; 656 uint8_t isset; 657 }; 658 659 struct pf_keth_anchor; 660 661 TAILQ_HEAD(pf_keth_ruleq, pf_keth_rule); 662 663 struct pf_keth_ruleset { 664 struct pf_keth_ruleq rules[2]; 665 struct pf_keth_rules { 666 struct pf_keth_ruleq *rules; 667 int open; 668 uint32_t ticket; 669 } active, inactive; 670 struct epoch_context epoch_ctx; 671 struct vnet *vnet; 672 struct pf_keth_anchor *anchor; 673 }; 674 675 RB_HEAD(pf_keth_anchor_global, pf_keth_anchor); 676 RB_HEAD(pf_keth_anchor_node, pf_keth_anchor); 677 struct pf_keth_anchor { 678 RB_ENTRY(pf_keth_anchor) entry_node; 679 RB_ENTRY(pf_keth_anchor) entry_global; 680 struct pf_keth_anchor *parent; 681 struct pf_keth_anchor_node children; 682 char name[PF_ANCHOR_NAME_SIZE]; 683 char path[MAXPATHLEN]; 684 struct pf_keth_ruleset ruleset; 685 int refcnt; /* anchor rules */ 686 uint8_t anchor_relative; 687 uint8_t anchor_wildcard; 688 }; 689 RB_PROTOTYPE(pf_keth_anchor_node, pf_keth_anchor, entry_node, 690 pf_keth_anchor_compare); 691 RB_PROTOTYPE(pf_keth_anchor_global, pf_keth_anchor, entry_global, 692 pf_keth_anchor_compare); 693 694 struct pf_keth_rule { 695 #define PFE_SKIP_IFP 0 696 #define PFE_SKIP_DIR 1 697 #define PFE_SKIP_PROTO 2 698 #define PFE_SKIP_SRC_ADDR 3 699 #define PFE_SKIP_DST_ADDR 4 700 #define PFE_SKIP_COUNT 5 701 union pf_keth_rule_ptr skip[PFE_SKIP_COUNT]; 702 703 TAILQ_ENTRY(pf_keth_rule) entries; 704 705 struct pf_keth_anchor *anchor; 706 u_int8_t anchor_relative; 707 u_int8_t anchor_wildcard; 708 709 uint32_t nr; 710 711 bool quick; 712 713 /* Filter */ 714 char ifname[IFNAMSIZ]; 715 struct pfi_kkif *kif; 716 bool ifnot; 717 uint8_t direction; 718 uint16_t proto; 719 struct pf_keth_rule_addr src, dst; 720 struct pf_rule_addr ipsrc, ipdst; 721 char match_tagname[PF_TAG_NAME_SIZE]; 722 uint16_t match_tag; 723 bool match_tag_not; 724 725 726 /* Stats */ 727 counter_u64_t evaluations; 728 counter_u64_t packets[2]; 729 counter_u64_t bytes[2]; 730 time_t *timestamp; 731 732 /* Action */ 733 char qname[PF_QNAME_SIZE]; 734 int qid; 735 char tagname[PF_TAG_NAME_SIZE]; 736 uint16_t tag; 737 char bridge_to_name[IFNAMSIZ]; 738 struct pfi_kkif *bridge_to; 739 uint8_t action; 740 uint16_t dnpipe; 741 uint32_t dnflags; 742 743 char label[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE]; 744 uint32_t ridentifier; 745 }; 746 747 union pf_krule_ptr { 748 struct pf_krule *ptr; 749 u_int32_t nr; 750 }; 751 752 RB_HEAD(pf_krule_global, pf_krule); 753 RB_PROTOTYPE(pf_krule_global, pf_krule, entry_global, pf_krule_compare); 754 755 struct pf_krule { 756 struct pf_rule_addr src; 757 struct pf_rule_addr dst; 758 union pf_krule_ptr skip[PF_SKIP_COUNT]; 759 char label[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE]; 760 uint32_t ridentifier; 761 char ifname[IFNAMSIZ]; 762 char qname[PF_QNAME_SIZE]; 763 char pqname[PF_QNAME_SIZE]; 764 char tagname[PF_TAG_NAME_SIZE]; 765 char match_tagname[PF_TAG_NAME_SIZE]; 766 767 char overload_tblname[PF_TABLE_NAME_SIZE]; 768 769 TAILQ_ENTRY(pf_krule) entries; 770 struct pf_kpool rpool; 771 772 struct pf_counter_u64 evaluations; 773 struct pf_counter_u64 packets[2]; 774 struct pf_counter_u64 bytes[2]; 775 time_t *timestamp; 776 777 struct pfi_kkif *kif; 778 struct pf_kanchor *anchor; 779 struct pfr_ktable *overload_tbl; 780 781 pf_osfp_t os_fingerprint; 782 783 int32_t rtableid; 784 u_int32_t timeout[PFTM_MAX]; 785 u_int32_t max_states; 786 u_int32_t max_src_nodes; 787 u_int32_t max_src_states; 788 u_int32_t max_src_conn; 789 struct { 790 u_int32_t limit; 791 u_int32_t seconds; 792 } max_src_conn_rate; 793 u_int16_t qid; 794 u_int16_t pqid; 795 u_int16_t dnpipe; 796 u_int16_t dnrpipe; 797 u_int32_t free_flags; 798 u_int32_t nr; 799 u_int32_t prob; 800 uid_t cuid; 801 pid_t cpid; 802 803 counter_u64_t states_cur; 804 counter_u64_t states_tot; 805 counter_u64_t src_nodes; 806 807 u_int16_t return_icmp; 808 u_int16_t return_icmp6; 809 u_int16_t max_mss; 810 u_int16_t tag; 811 u_int16_t match_tag; 812 u_int16_t scrub_flags; 813 814 struct pf_rule_uid uid; 815 struct pf_rule_gid gid; 816 817 u_int32_t rule_flag; 818 uint32_t rule_ref; 819 u_int8_t action; 820 u_int8_t direction; 821 u_int8_t log; 822 u_int8_t logif; 823 u_int8_t quick; 824 u_int8_t ifnot; 825 u_int8_t match_tag_not; 826 u_int8_t natpass; 827 828 u_int8_t keep_state; 829 sa_family_t af; 830 u_int8_t proto; 831 u_int8_t type; 832 u_int8_t code; 833 u_int8_t flags; 834 u_int8_t flagset; 835 u_int8_t min_ttl; 836 u_int8_t allow_opts; 837 u_int8_t rt; 838 u_int8_t return_ttl; 839 u_int8_t tos; 840 u_int8_t set_tos; 841 u_int8_t anchor_relative; 842 u_int8_t anchor_wildcard; 843 844 u_int8_t flush; 845 u_int8_t prio; 846 u_int8_t set_prio[2]; 847 848 struct { 849 struct pf_addr addr; 850 u_int16_t port; 851 } divert; 852 u_int8_t md5sum[PF_MD5_DIGEST_LENGTH]; 853 RB_ENTRY(pf_krule) entry_global; 854 855 #ifdef PF_WANT_32_TO_64_COUNTER 856 LIST_ENTRY(pf_krule) allrulelist; 857 bool allrulelinked; 858 #endif 859 }; 860 861 struct pf_krule_item { 862 SLIST_ENTRY(pf_krule_item) entry; 863 struct pf_krule *r; 864 }; 865 866 SLIST_HEAD(pf_krule_slist, pf_krule_item); 867 868 struct pf_ksrc_node { 869 LIST_ENTRY(pf_ksrc_node) entry; 870 struct pf_addr addr; 871 struct pf_addr raddr; 872 struct pf_krule_slist match_rules; 873 union pf_krule_ptr rule; 874 struct pfi_kkif *kif; 875 counter_u64_t bytes[2]; 876 counter_u64_t packets[2]; 877 u_int32_t states; 878 u_int32_t conn; 879 struct pf_threshold conn_rate; 880 u_int32_t creation; 881 u_int32_t expire; 882 sa_family_t af; 883 u_int8_t ruletype; 884 struct mtx *lock; 885 }; 886 #endif 887 888 struct pf_state_scrub { 889 struct timeval pfss_last; /* time received last packet */ 890 u_int32_t pfss_tsecr; /* last echoed timestamp */ 891 u_int32_t pfss_tsval; /* largest timestamp */ 892 u_int32_t pfss_tsval0; /* original timestamp */ 893 u_int16_t pfss_flags; 894 #define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */ 895 #define PFSS_PAWS 0x0010 /* stricter PAWS checks */ 896 #define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */ 897 #define PFSS_DATA_TS 0x0040 /* timestamp on data packets */ 898 #define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */ 899 u_int8_t pfss_ttl; /* stashed TTL */ 900 u_int8_t pad; 901 u_int32_t pfss_ts_mod; /* timestamp modulation */ 902 }; 903 904 struct pf_state_host { 905 struct pf_addr addr; 906 u_int16_t port; 907 u_int16_t pad; 908 }; 909 910 struct pf_state_peer { 911 struct pf_state_scrub *scrub; /* state is scrubbed */ 912 u_int32_t seqlo; /* Max sequence number sent */ 913 u_int32_t seqhi; /* Max the other end ACKd + win */ 914 u_int32_t seqdiff; /* Sequence number modulator */ 915 u_int16_t max_win; /* largest window (pre scaling) */ 916 u_int16_t mss; /* Maximum segment size option */ 917 u_int8_t state; /* active state level */ 918 u_int8_t wscale; /* window scaling factor */ 919 u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */ 920 u_int8_t pad[1]; 921 }; 922 923 /* Keep synced with struct pf_state_key. */ 924 struct pf_state_key_cmp { 925 struct pf_addr addr[2]; 926 u_int16_t port[2]; 927 sa_family_t af; 928 u_int8_t proto; 929 u_int8_t pad[2]; 930 }; 931 932 struct pf_state_key { 933 struct pf_addr addr[2]; 934 u_int16_t port[2]; 935 sa_family_t af; 936 u_int8_t proto; 937 u_int8_t pad[2]; 938 939 LIST_ENTRY(pf_state_key) entry; 940 TAILQ_HEAD(, pf_kstate) states[2]; 941 }; 942 943 /* Keep synced with struct pf_kstate. */ 944 struct pf_state_cmp { 945 u_int64_t id; 946 u_int32_t creatorid; 947 u_int8_t direction; 948 u_int8_t pad[3]; 949 }; 950 951 struct pf_state_scrub_export { 952 uint16_t pfss_flags; 953 uint8_t pfss_ttl; /* stashed TTL */ 954 #define PF_SCRUB_FLAG_VALID 0x01 955 uint8_t scrub_flag; 956 uint32_t pfss_ts_mod; /* timestamp modulation */ 957 }; 958 959 struct pf_state_key_export { 960 struct pf_addr addr[2]; 961 uint16_t port[2]; 962 }; 963 964 struct pf_state_peer_export { 965 struct pf_state_scrub_export scrub; /* state is scrubbed */ 966 uint32_t seqlo; /* Max sequence number sent */ 967 uint32_t seqhi; /* Max the other end ACKd + win */ 968 uint32_t seqdiff; /* Sequence number modulator */ 969 uint16_t max_win; /* largest window (pre scaling) */ 970 uint16_t mss; /* Maximum segment size option */ 971 uint8_t state; /* active state level */ 972 uint8_t wscale; /* window scaling factor */ 973 uint8_t dummy[6]; 974 }; 975 _Static_assert(sizeof(struct pf_state_peer_export) == 32, "size incorrect"); 976 977 struct pf_state_export { 978 uint64_t version; 979 #define PF_STATE_VERSION 20230404 980 uint64_t id; 981 char ifname[IFNAMSIZ]; 982 char orig_ifname[IFNAMSIZ]; 983 struct pf_state_key_export key[2]; 984 struct pf_state_peer_export src; 985 struct pf_state_peer_export dst; 986 struct pf_addr rt_addr; 987 uint32_t rule; 988 uint32_t anchor; 989 uint32_t nat_rule; 990 uint32_t creation; 991 uint32_t expire; 992 uint32_t spare0; 993 uint64_t packets[2]; 994 uint64_t bytes[2]; 995 uint32_t creatorid; 996 uint32_t spare1; 997 sa_family_t af; 998 uint8_t proto; 999 uint8_t direction; 1000 uint8_t log; 1001 uint8_t state_flags_compat; 1002 uint8_t timeout; 1003 uint8_t sync_flags; 1004 uint8_t updates; 1005 uint16_t state_flags; 1006 uint16_t qid; 1007 uint16_t pqid; 1008 uint16_t dnpipe; 1009 uint16_t dnrpipe; 1010 int32_t rtableid; 1011 uint8_t min_ttl; 1012 uint8_t set_tos; 1013 uint16_t max_mss; 1014 uint8_t set_prio[2]; 1015 uint8_t rt; 1016 char rt_ifname[IFNAMSIZ]; 1017 1018 uint8_t spare[72]; 1019 }; 1020 _Static_assert(sizeof(struct pf_state_export) == 384, "size incorrect"); 1021 1022 #ifdef _KERNEL 1023 struct pf_kstate { 1024 /* 1025 * Area shared with pf_state_cmp 1026 */ 1027 u_int64_t id; 1028 u_int32_t creatorid; 1029 u_int8_t direction; 1030 u_int8_t pad[3]; 1031 /* 1032 * end of the area 1033 */ 1034 1035 u_int16_t state_flags; 1036 u_int8_t timeout; 1037 u_int8_t sync_state; /* PFSYNC_S_x */ 1038 u_int8_t sync_updates; /* XXX */ 1039 u_int refs; 1040 struct mtx *lock; 1041 TAILQ_ENTRY(pf_kstate) sync_list; 1042 TAILQ_ENTRY(pf_kstate) key_list[2]; 1043 LIST_ENTRY(pf_kstate) entry; 1044 struct pf_state_peer src; 1045 struct pf_state_peer dst; 1046 struct pf_krule_slist match_rules; 1047 union pf_krule_ptr rule; 1048 union pf_krule_ptr anchor; 1049 union pf_krule_ptr nat_rule; 1050 struct pf_addr rt_addr; 1051 struct pf_state_key *key[2]; /* addresses stack and wire */ 1052 struct pfi_kkif *kif; 1053 struct pfi_kkif *orig_kif; /* The real kif, even if we're a floating state (i.e. if == V_pfi_all). */ 1054 struct pfi_kkif *rt_kif; 1055 struct pf_ksrc_node *src_node; 1056 struct pf_ksrc_node *nat_src_node; 1057 u_int64_t packets[2]; 1058 u_int64_t bytes[2]; 1059 u_int32_t creation; 1060 u_int32_t expire; 1061 u_int32_t pfsync_time; 1062 u_int16_t qid; 1063 u_int16_t pqid; 1064 u_int16_t dnpipe; 1065 u_int16_t dnrpipe; 1066 u_int16_t tag; 1067 u_int8_t log; 1068 int32_t rtableid; 1069 u_int8_t min_ttl; 1070 u_int8_t set_tos; 1071 u_int16_t max_mss; 1072 u_int8_t rt; 1073 u_int8_t set_prio[2]; 1074 }; 1075 1076 /* 1077 * Size <= fits 11 objects per page on LP64. Try to not grow the struct beyond that. 1078 */ 1079 _Static_assert(sizeof(struct pf_kstate) <= 368, "pf_kstate size crosses 368 bytes"); 1080 #endif 1081 1082 /* 1083 * Unified state structures for pulling states out of the kernel 1084 * used by pfsync(4) and the pf(4) ioctl. 1085 */ 1086 struct pfsync_state_scrub { 1087 u_int16_t pfss_flags; 1088 u_int8_t pfss_ttl; /* stashed TTL */ 1089 #define PFSYNC_SCRUB_FLAG_VALID 0x01 1090 u_int8_t scrub_flag; 1091 u_int32_t pfss_ts_mod; /* timestamp modulation */ 1092 } __packed; 1093 1094 struct pfsync_state_peer { 1095 struct pfsync_state_scrub scrub; /* state is scrubbed */ 1096 u_int32_t seqlo; /* Max sequence number sent */ 1097 u_int32_t seqhi; /* Max the other end ACKd + win */ 1098 u_int32_t seqdiff; /* Sequence number modulator */ 1099 u_int16_t max_win; /* largest window (pre scaling) */ 1100 u_int16_t mss; /* Maximum segment size option */ 1101 u_int8_t state; /* active state level */ 1102 u_int8_t wscale; /* window scaling factor */ 1103 u_int8_t pad[6]; 1104 } __packed; 1105 1106 struct pfsync_state_key { 1107 struct pf_addr addr[2]; 1108 u_int16_t port[2]; 1109 }; 1110 1111 struct pfsync_state_1301 { 1112 u_int64_t id; 1113 char ifname[IFNAMSIZ]; 1114 struct pfsync_state_key key[2]; 1115 struct pfsync_state_peer src; 1116 struct pfsync_state_peer dst; 1117 struct pf_addr rt_addr; 1118 u_int32_t rule; 1119 u_int32_t anchor; 1120 u_int32_t nat_rule; 1121 u_int32_t creation; 1122 u_int32_t expire; 1123 u_int32_t packets[2][2]; 1124 u_int32_t bytes[2][2]; 1125 u_int32_t creatorid; 1126 sa_family_t af; 1127 u_int8_t proto; 1128 u_int8_t direction; 1129 u_int8_t __spare[2]; 1130 u_int8_t log; 1131 u_int8_t state_flags; 1132 u_int8_t timeout; 1133 u_int8_t sync_flags; 1134 u_int8_t updates; 1135 } __packed; 1136 1137 struct pfsync_state_1400 { 1138 /* The beginning of the struct is compatible with previous versions */ 1139 u_int64_t id; 1140 char ifname[IFNAMSIZ]; 1141 struct pfsync_state_key key[2]; 1142 struct pfsync_state_peer src; 1143 struct pfsync_state_peer dst; 1144 struct pf_addr rt_addr; 1145 u_int32_t rule; 1146 u_int32_t anchor; 1147 u_int32_t nat_rule; 1148 u_int32_t creation; 1149 u_int32_t expire; 1150 u_int32_t packets[2][2]; 1151 u_int32_t bytes[2][2]; 1152 u_int32_t creatorid; 1153 sa_family_t af; 1154 u_int8_t proto; 1155 u_int8_t direction; 1156 u_int16_t state_flags; 1157 u_int8_t log; 1158 u_int8_t __spare; 1159 u_int8_t timeout; 1160 u_int8_t sync_flags; 1161 u_int8_t updates; 1162 /* The rest is not */ 1163 u_int16_t qid; 1164 u_int16_t pqid; 1165 u_int16_t dnpipe; 1166 u_int16_t dnrpipe; 1167 int32_t rtableid; 1168 u_int8_t min_ttl; 1169 u_int8_t set_tos; 1170 u_int16_t max_mss; 1171 u_int8_t set_prio[2]; 1172 u_int8_t rt; 1173 char rt_ifname[IFNAMSIZ]; 1174 1175 } __packed; 1176 1177 union pfsync_state_union { 1178 struct pfsync_state_1301 pfs_1301; 1179 struct pfsync_state_1400 pfs_1400; 1180 } __packed; 1181 1182 #ifdef _KERNEL 1183 /* pfsync */ 1184 typedef int pfsync_state_import_t(union pfsync_state_union *, int, int); 1185 typedef void pfsync_insert_state_t(struct pf_kstate *); 1186 typedef void pfsync_update_state_t(struct pf_kstate *); 1187 typedef void pfsync_delete_state_t(struct pf_kstate *); 1188 typedef void pfsync_clear_states_t(u_int32_t, const char *); 1189 typedef int pfsync_defer_t(struct pf_kstate *, struct mbuf *); 1190 typedef void pfsync_detach_ifnet_t(struct ifnet *); 1191 1192 VNET_DECLARE(pfsync_state_import_t *, pfsync_state_import_ptr); 1193 #define V_pfsync_state_import_ptr VNET(pfsync_state_import_ptr) 1194 VNET_DECLARE(pfsync_insert_state_t *, pfsync_insert_state_ptr); 1195 #define V_pfsync_insert_state_ptr VNET(pfsync_insert_state_ptr) 1196 VNET_DECLARE(pfsync_update_state_t *, pfsync_update_state_ptr); 1197 #define V_pfsync_update_state_ptr VNET(pfsync_update_state_ptr) 1198 VNET_DECLARE(pfsync_delete_state_t *, pfsync_delete_state_ptr); 1199 #define V_pfsync_delete_state_ptr VNET(pfsync_delete_state_ptr) 1200 VNET_DECLARE(pfsync_clear_states_t *, pfsync_clear_states_ptr); 1201 #define V_pfsync_clear_states_ptr VNET(pfsync_clear_states_ptr) 1202 VNET_DECLARE(pfsync_defer_t *, pfsync_defer_ptr); 1203 #define V_pfsync_defer_ptr VNET(pfsync_defer_ptr) 1204 extern pfsync_detach_ifnet_t *pfsync_detach_ifnet_ptr; 1205 1206 void pfsync_state_export(union pfsync_state_union *, 1207 struct pf_kstate *, int); 1208 void pf_state_export(struct pf_state_export *, 1209 struct pf_kstate *); 1210 1211 /* pflog */ 1212 struct pf_kruleset; 1213 struct pf_pdesc; 1214 typedef int pflog_packet_t(struct pfi_kkif *, struct mbuf *, sa_family_t, 1215 u_int8_t, u_int8_t, struct pf_krule *, struct pf_krule *, 1216 struct pf_kruleset *, struct pf_pdesc *, int); 1217 extern pflog_packet_t *pflog_packet_ptr; 1218 1219 #endif /* _KERNEL */ 1220 1221 #define PFSYNC_FLAG_SRCNODE 0x04 1222 #define PFSYNC_FLAG_NATSRCNODE 0x08 1223 1224 /* for copies to/from network byte order */ 1225 /* ioctl interface also uses network byte order */ 1226 #define pf_state_peer_hton(s,d) do { \ 1227 (d)->seqlo = htonl((s)->seqlo); \ 1228 (d)->seqhi = htonl((s)->seqhi); \ 1229 (d)->seqdiff = htonl((s)->seqdiff); \ 1230 (d)->max_win = htons((s)->max_win); \ 1231 (d)->mss = htons((s)->mss); \ 1232 (d)->state = (s)->state; \ 1233 (d)->wscale = (s)->wscale; \ 1234 if ((s)->scrub) { \ 1235 (d)->scrub.pfss_flags = \ 1236 htons((s)->scrub->pfss_flags & PFSS_TIMESTAMP); \ 1237 (d)->scrub.pfss_ttl = (s)->scrub->pfss_ttl; \ 1238 (d)->scrub.pfss_ts_mod = htonl((s)->scrub->pfss_ts_mod);\ 1239 (d)->scrub.scrub_flag = PFSYNC_SCRUB_FLAG_VALID; \ 1240 } \ 1241 } while (0) 1242 1243 #define pf_state_peer_ntoh(s,d) do { \ 1244 (d)->seqlo = ntohl((s)->seqlo); \ 1245 (d)->seqhi = ntohl((s)->seqhi); \ 1246 (d)->seqdiff = ntohl((s)->seqdiff); \ 1247 (d)->max_win = ntohs((s)->max_win); \ 1248 (d)->mss = ntohs((s)->mss); \ 1249 (d)->state = (s)->state; \ 1250 (d)->wscale = (s)->wscale; \ 1251 if ((s)->scrub.scrub_flag == PFSYNC_SCRUB_FLAG_VALID && \ 1252 (d)->scrub != NULL) { \ 1253 (d)->scrub->pfss_flags = \ 1254 ntohs((s)->scrub.pfss_flags) & PFSS_TIMESTAMP; \ 1255 (d)->scrub->pfss_ttl = (s)->scrub.pfss_ttl; \ 1256 (d)->scrub->pfss_ts_mod = ntohl((s)->scrub.pfss_ts_mod);\ 1257 } \ 1258 } while (0) 1259 1260 #define pf_state_counter_hton(s,d) do { \ 1261 d[0] = htonl((s>>32)&0xffffffff); \ 1262 d[1] = htonl(s&0xffffffff); \ 1263 } while (0) 1264 1265 #define pf_state_counter_from_pfsync(s) \ 1266 (((u_int64_t)(s[0])<<32) | (u_int64_t)(s[1])) 1267 1268 #define pf_state_counter_ntoh(s,d) do { \ 1269 d = ntohl(s[0]); \ 1270 d = d<<32; \ 1271 d += ntohl(s[1]); \ 1272 } while (0) 1273 1274 TAILQ_HEAD(pf_krulequeue, pf_krule); 1275 1276 struct pf_kanchor; 1277 1278 struct pf_kruleset { 1279 struct { 1280 struct pf_krulequeue queues[2]; 1281 struct { 1282 struct pf_krulequeue *ptr; 1283 struct pf_krule **ptr_array; 1284 u_int32_t rcount; 1285 u_int32_t ticket; 1286 int open; 1287 struct pf_krule_global *tree; 1288 } active, inactive; 1289 } rules[PF_RULESET_MAX]; 1290 struct pf_kanchor *anchor; 1291 u_int32_t tticket; 1292 int tables; 1293 int topen; 1294 }; 1295 1296 RB_HEAD(pf_kanchor_global, pf_kanchor); 1297 RB_HEAD(pf_kanchor_node, pf_kanchor); 1298 struct pf_kanchor { 1299 RB_ENTRY(pf_kanchor) entry_global; 1300 RB_ENTRY(pf_kanchor) entry_node; 1301 struct pf_kanchor *parent; 1302 struct pf_kanchor_node children; 1303 char name[PF_ANCHOR_NAME_SIZE]; 1304 char path[MAXPATHLEN]; 1305 struct pf_kruleset ruleset; 1306 int refcnt; /* anchor rules */ 1307 }; 1308 RB_PROTOTYPE(pf_kanchor_global, pf_kanchor, entry_global, pf_anchor_compare); 1309 RB_PROTOTYPE(pf_kanchor_node, pf_kanchor, entry_node, pf_kanchor_compare); 1310 1311 #define PF_RESERVED_ANCHOR "_pf" 1312 1313 #define PFR_TFLAG_PERSIST 0x00000001 1314 #define PFR_TFLAG_CONST 0x00000002 1315 #define PFR_TFLAG_ACTIVE 0x00000004 1316 #define PFR_TFLAG_INACTIVE 0x00000008 1317 #define PFR_TFLAG_REFERENCED 0x00000010 1318 #define PFR_TFLAG_REFDANCHOR 0x00000020 1319 #define PFR_TFLAG_COUNTERS 0x00000040 1320 /* Adjust masks below when adding flags. */ 1321 #define PFR_TFLAG_USRMASK (PFR_TFLAG_PERSIST | \ 1322 PFR_TFLAG_CONST | \ 1323 PFR_TFLAG_COUNTERS) 1324 #define PFR_TFLAG_SETMASK (PFR_TFLAG_ACTIVE | \ 1325 PFR_TFLAG_INACTIVE | \ 1326 PFR_TFLAG_REFERENCED | \ 1327 PFR_TFLAG_REFDANCHOR) 1328 #define PFR_TFLAG_ALLMASK (PFR_TFLAG_PERSIST | \ 1329 PFR_TFLAG_CONST | \ 1330 PFR_TFLAG_ACTIVE | \ 1331 PFR_TFLAG_INACTIVE | \ 1332 PFR_TFLAG_REFERENCED | \ 1333 PFR_TFLAG_REFDANCHOR | \ 1334 PFR_TFLAG_COUNTERS) 1335 1336 struct pf_kanchor_stackframe; 1337 struct pf_keth_anchor_stackframe; 1338 1339 struct pfr_table { 1340 char pfrt_anchor[MAXPATHLEN]; 1341 char pfrt_name[PF_TABLE_NAME_SIZE]; 1342 u_int32_t pfrt_flags; 1343 u_int8_t pfrt_fback; 1344 }; 1345 1346 enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED, 1347 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE, 1348 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_NOCOUNT, PFR_FB_MAX }; 1349 1350 struct pfr_addr { 1351 union { 1352 struct in_addr _pfra_ip4addr; 1353 struct in6_addr _pfra_ip6addr; 1354 } pfra_u; 1355 u_int8_t pfra_af; 1356 u_int8_t pfra_net; 1357 u_int8_t pfra_not; 1358 u_int8_t pfra_fback; 1359 }; 1360 #define pfra_ip4addr pfra_u._pfra_ip4addr 1361 #define pfra_ip6addr pfra_u._pfra_ip6addr 1362 1363 enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX }; 1364 enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX }; 1365 enum { PFR_TYPE_PACKETS, PFR_TYPE_BYTES, PFR_TYPE_MAX }; 1366 #define PFR_NUM_COUNTERS (PFR_DIR_MAX * PFR_OP_ADDR_MAX * PFR_TYPE_MAX) 1367 #define PFR_OP_XPASS PFR_OP_ADDR_MAX 1368 1369 struct pfr_astats { 1370 struct pfr_addr pfras_a; 1371 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1372 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1373 long pfras_tzero; 1374 }; 1375 1376 enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX }; 1377 1378 struct pfr_tstats { 1379 struct pfr_table pfrts_t; 1380 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1381 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1382 u_int64_t pfrts_match; 1383 u_int64_t pfrts_nomatch; 1384 long pfrts_tzero; 1385 int pfrts_cnt; 1386 int pfrts_refcnt[PFR_REFCNT_MAX]; 1387 }; 1388 1389 #ifdef _KERNEL 1390 1391 struct pfr_kstate_counter { 1392 counter_u64_t pkc_pcpu; 1393 u_int64_t pkc_zero; 1394 }; 1395 1396 static inline int 1397 pfr_kstate_counter_init(struct pfr_kstate_counter *pfrc, int flags) 1398 { 1399 1400 pfrc->pkc_zero = 0; 1401 pfrc->pkc_pcpu = counter_u64_alloc(flags); 1402 if (pfrc->pkc_pcpu == NULL) 1403 return (ENOMEM); 1404 return (0); 1405 } 1406 1407 static inline void 1408 pfr_kstate_counter_deinit(struct pfr_kstate_counter *pfrc) 1409 { 1410 1411 counter_u64_free(pfrc->pkc_pcpu); 1412 } 1413 1414 static inline u_int64_t 1415 pfr_kstate_counter_fetch(struct pfr_kstate_counter *pfrc) 1416 { 1417 u_int64_t c; 1418 1419 c = counter_u64_fetch(pfrc->pkc_pcpu); 1420 c -= pfrc->pkc_zero; 1421 return (c); 1422 } 1423 1424 static inline void 1425 pfr_kstate_counter_zero(struct pfr_kstate_counter *pfrc) 1426 { 1427 u_int64_t c; 1428 1429 c = counter_u64_fetch(pfrc->pkc_pcpu); 1430 pfrc->pkc_zero = c; 1431 } 1432 1433 static inline void 1434 pfr_kstate_counter_add(struct pfr_kstate_counter *pfrc, int64_t n) 1435 { 1436 1437 counter_u64_add(pfrc->pkc_pcpu, n); 1438 } 1439 1440 struct pfr_ktstats { 1441 struct pfr_table pfrts_t; 1442 struct pfr_kstate_counter pfrkts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1443 struct pfr_kstate_counter pfrkts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1444 struct pfr_kstate_counter pfrkts_match; 1445 struct pfr_kstate_counter pfrkts_nomatch; 1446 long pfrkts_tzero; 1447 int pfrkts_cnt; 1448 int pfrkts_refcnt[PFR_REFCNT_MAX]; 1449 }; 1450 1451 #endif /* _KERNEL */ 1452 1453 #define pfrts_name pfrts_t.pfrt_name 1454 #define pfrts_flags pfrts_t.pfrt_flags 1455 1456 #ifndef _SOCKADDR_UNION_DEFINED 1457 #define _SOCKADDR_UNION_DEFINED 1458 union sockaddr_union { 1459 struct sockaddr sa; 1460 struct sockaddr_in sin; 1461 struct sockaddr_in6 sin6; 1462 }; 1463 #endif /* _SOCKADDR_UNION_DEFINED */ 1464 1465 struct pfr_kcounters { 1466 counter_u64_t pfrkc_counters; 1467 long pfrkc_tzero; 1468 }; 1469 #define pfr_kentry_counter(kc, dir, op, t) \ 1470 ((kc)->pfrkc_counters + \ 1471 (dir) * PFR_OP_ADDR_MAX * PFR_TYPE_MAX + (op) * PFR_TYPE_MAX + (t)) 1472 1473 #ifdef _KERNEL 1474 SLIST_HEAD(pfr_kentryworkq, pfr_kentry); 1475 struct pfr_kentry { 1476 struct radix_node pfrke_node[2]; 1477 union sockaddr_union pfrke_sa; 1478 SLIST_ENTRY(pfr_kentry) pfrke_workq; 1479 struct pfr_kcounters pfrke_counters; 1480 u_int8_t pfrke_af; 1481 u_int8_t pfrke_net; 1482 u_int8_t pfrke_not; 1483 u_int8_t pfrke_mark; 1484 }; 1485 1486 SLIST_HEAD(pfr_ktableworkq, pfr_ktable); 1487 RB_HEAD(pfr_ktablehead, pfr_ktable); 1488 struct pfr_ktable { 1489 struct pfr_ktstats pfrkt_kts; 1490 RB_ENTRY(pfr_ktable) pfrkt_tree; 1491 SLIST_ENTRY(pfr_ktable) pfrkt_workq; 1492 struct radix_node_head *pfrkt_ip4; 1493 struct radix_node_head *pfrkt_ip6; 1494 struct pfr_ktable *pfrkt_shadow; 1495 struct pfr_ktable *pfrkt_root; 1496 struct pf_kruleset *pfrkt_rs; 1497 long pfrkt_larg; 1498 int pfrkt_nflags; 1499 }; 1500 #define pfrkt_t pfrkt_kts.pfrts_t 1501 #define pfrkt_name pfrkt_t.pfrt_name 1502 #define pfrkt_anchor pfrkt_t.pfrt_anchor 1503 #define pfrkt_ruleset pfrkt_t.pfrt_ruleset 1504 #define pfrkt_flags pfrkt_t.pfrt_flags 1505 #define pfrkt_cnt pfrkt_kts.pfrkts_cnt 1506 #define pfrkt_refcnt pfrkt_kts.pfrkts_refcnt 1507 #define pfrkt_packets pfrkt_kts.pfrkts_packets 1508 #define pfrkt_bytes pfrkt_kts.pfrkts_bytes 1509 #define pfrkt_match pfrkt_kts.pfrkts_match 1510 #define pfrkt_nomatch pfrkt_kts.pfrkts_nomatch 1511 #define pfrkt_tzero pfrkt_kts.pfrkts_tzero 1512 #endif 1513 1514 #ifdef _KERNEL 1515 struct pfi_kkif { 1516 char pfik_name[IFNAMSIZ]; 1517 union { 1518 RB_ENTRY(pfi_kkif) _pfik_tree; 1519 LIST_ENTRY(pfi_kkif) _pfik_list; 1520 } _pfik_glue; 1521 #define pfik_tree _pfik_glue._pfik_tree 1522 #define pfik_list _pfik_glue._pfik_list 1523 struct pf_counter_u64 pfik_packets[2][2][2]; 1524 struct pf_counter_u64 pfik_bytes[2][2][2]; 1525 u_int32_t pfik_tzero; 1526 u_int pfik_flags; 1527 struct ifnet *pfik_ifp; 1528 struct ifg_group *pfik_group; 1529 u_int pfik_rulerefs; 1530 TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs; 1531 #ifdef PF_WANT_32_TO_64_COUNTER 1532 LIST_ENTRY(pfi_kkif) pfik_allkiflist; 1533 #endif 1534 }; 1535 #endif 1536 1537 #define PFI_IFLAG_REFS 0x0001 /* has state references */ 1538 #define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */ 1539 1540 #ifdef _KERNEL 1541 struct pf_pdesc { 1542 struct { 1543 int done; 1544 uid_t uid; 1545 gid_t gid; 1546 } lookup; 1547 u_int64_t tot_len; /* Make Mickey money */ 1548 union pf_headers { 1549 struct tcphdr tcp; 1550 struct udphdr udp; 1551 struct icmp icmp; 1552 #ifdef INET6 1553 struct icmp6_hdr icmp6; 1554 #endif /* INET6 */ 1555 char any[0]; 1556 } hdr; 1557 1558 struct pf_krule *nat_rule; /* nat/rdr rule applied to packet */ 1559 struct pf_addr *src; /* src address */ 1560 struct pf_addr *dst; /* dst address */ 1561 u_int16_t *sport; 1562 u_int16_t *dport; 1563 struct pf_mtag *pf_mtag; 1564 struct pf_rule_actions act; 1565 1566 u_int32_t p_len; /* total length of payload */ 1567 1568 u_int16_t *ip_sum; 1569 u_int16_t *proto_sum; 1570 u_int16_t flags; /* Let SCRUB trigger behavior in 1571 * state code. Easier than tags */ 1572 #define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */ 1573 #define PFDESC_IP_REAS 0x0002 /* IP frags would've been reassembled */ 1574 sa_family_t af; 1575 u_int8_t proto; 1576 u_int8_t tos; 1577 u_int8_t dir; /* direction */ 1578 u_int8_t sidx; /* key index for source */ 1579 u_int8_t didx; /* key index for destination */ 1580 }; 1581 #endif 1582 1583 /* flags for RDR options */ 1584 #define PF_DPORT_RANGE 0x01 /* Dest port uses range */ 1585 #define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */ 1586 1587 /* UDP state enumeration */ 1588 #define PFUDPS_NO_TRAFFIC 0 1589 #define PFUDPS_SINGLE 1 1590 #define PFUDPS_MULTIPLE 2 1591 1592 #define PFUDPS_NSTATES 3 /* number of state levels */ 1593 1594 #define PFUDPS_NAMES { \ 1595 "NO_TRAFFIC", \ 1596 "SINGLE", \ 1597 "MULTIPLE", \ 1598 NULL \ 1599 } 1600 1601 /* Other protocol state enumeration */ 1602 #define PFOTHERS_NO_TRAFFIC 0 1603 #define PFOTHERS_SINGLE 1 1604 #define PFOTHERS_MULTIPLE 2 1605 1606 #define PFOTHERS_NSTATES 3 /* number of state levels */ 1607 1608 #define PFOTHERS_NAMES { \ 1609 "NO_TRAFFIC", \ 1610 "SINGLE", \ 1611 "MULTIPLE", \ 1612 NULL \ 1613 } 1614 1615 #define ACTION_SET(a, x) \ 1616 do { \ 1617 if ((a) != NULL) \ 1618 *(a) = (x); \ 1619 } while (0) 1620 1621 #define REASON_SET(a, x) \ 1622 do { \ 1623 if ((a) != NULL) \ 1624 *(a) = (x); \ 1625 if (x < PFRES_MAX) \ 1626 counter_u64_add(V_pf_status.counters[x], 1); \ 1627 } while (0) 1628 1629 enum pf_syncookies_mode { 1630 PF_SYNCOOKIES_NEVER = 0, 1631 PF_SYNCOOKIES_ALWAYS = 1, 1632 PF_SYNCOOKIES_ADAPTIVE = 2, 1633 PF_SYNCOOKIES_MODE_MAX = PF_SYNCOOKIES_ADAPTIVE 1634 }; 1635 1636 #define PF_SYNCOOKIES_HIWATPCT 25 1637 #define PF_SYNCOOKIES_LOWATPCT (PF_SYNCOOKIES_HIWATPCT / 2) 1638 1639 #ifdef _KERNEL 1640 struct pf_kstatus { 1641 counter_u64_t counters[PFRES_MAX]; /* reason for passing/dropping */ 1642 counter_u64_t lcounters[KLCNT_MAX]; /* limit counters */ 1643 struct pf_counter_u64 fcounters[FCNT_MAX]; /* state operation counters */ 1644 counter_u64_t scounters[SCNT_MAX]; /* src_node operation counters */ 1645 uint32_t states; 1646 uint32_t src_nodes; 1647 uint32_t running; 1648 uint32_t since; 1649 uint32_t debug; 1650 uint32_t hostid; 1651 char ifname[IFNAMSIZ]; 1652 uint8_t pf_chksum[PF_MD5_DIGEST_LENGTH]; 1653 bool keep_counters; 1654 enum pf_syncookies_mode syncookies_mode; 1655 bool syncookies_active; 1656 uint64_t syncookies_inflight[2]; 1657 uint32_t states_halfopen; 1658 uint32_t reass; 1659 }; 1660 #endif 1661 1662 struct pf_divert { 1663 union { 1664 struct in_addr ipv4; 1665 struct in6_addr ipv6; 1666 } addr; 1667 u_int16_t port; 1668 }; 1669 1670 #define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */ 1671 #define PFR_KENTRY_HIWAT 200000 /* Number of table entries */ 1672 1673 /* 1674 * Limit the length of the fragment queue traversal. Remember 1675 * search entry points based on the fragment offset. 1676 */ 1677 #define PF_FRAG_ENTRY_POINTS 16 1678 1679 /* 1680 * The number of entries in the fragment queue must be limited 1681 * to avoid DoS by linear searching. Instead of a global limit, 1682 * use a limit per entry point. For large packets these sum up. 1683 */ 1684 #define PF_FRAG_ENTRY_LIMIT 64 1685 1686 /* 1687 * ioctl parameter structures 1688 */ 1689 1690 struct pfioc_pooladdr { 1691 u_int32_t action; 1692 u_int32_t ticket; 1693 u_int32_t nr; 1694 u_int32_t r_num; 1695 u_int8_t r_action; 1696 u_int8_t r_last; 1697 u_int8_t af; 1698 char anchor[MAXPATHLEN]; 1699 struct pf_pooladdr addr; 1700 }; 1701 1702 struct pfioc_rule { 1703 u_int32_t action; 1704 u_int32_t ticket; 1705 u_int32_t pool_ticket; 1706 u_int32_t nr; 1707 char anchor[MAXPATHLEN]; 1708 char anchor_call[MAXPATHLEN]; 1709 struct pf_rule rule; 1710 }; 1711 1712 struct pfioc_natlook { 1713 struct pf_addr saddr; 1714 struct pf_addr daddr; 1715 struct pf_addr rsaddr; 1716 struct pf_addr rdaddr; 1717 u_int16_t sport; 1718 u_int16_t dport; 1719 u_int16_t rsport; 1720 u_int16_t rdport; 1721 sa_family_t af; 1722 u_int8_t proto; 1723 u_int8_t direction; 1724 }; 1725 1726 struct pfioc_state { 1727 struct pfsync_state_1301 state; 1728 }; 1729 1730 struct pfioc_src_node_kill { 1731 sa_family_t psnk_af; 1732 struct pf_rule_addr psnk_src; 1733 struct pf_rule_addr psnk_dst; 1734 u_int psnk_killed; 1735 }; 1736 1737 #ifdef _KERNEL 1738 struct pf_kstate_kill { 1739 struct pf_state_cmp psk_pfcmp; 1740 sa_family_t psk_af; 1741 int psk_proto; 1742 struct pf_rule_addr psk_src; 1743 struct pf_rule_addr psk_dst; 1744 struct pf_rule_addr psk_rt_addr; 1745 char psk_ifname[IFNAMSIZ]; 1746 char psk_label[PF_RULE_LABEL_SIZE]; 1747 u_int psk_killed; 1748 bool psk_kill_match; 1749 }; 1750 #endif 1751 1752 struct pfioc_state_kill { 1753 struct pf_state_cmp psk_pfcmp; 1754 sa_family_t psk_af; 1755 int psk_proto; 1756 struct pf_rule_addr psk_src; 1757 struct pf_rule_addr psk_dst; 1758 char psk_ifname[IFNAMSIZ]; 1759 char psk_label[PF_RULE_LABEL_SIZE]; 1760 u_int psk_killed; 1761 }; 1762 1763 struct pfioc_states { 1764 int ps_len; 1765 union { 1766 void *ps_buf; 1767 struct pfsync_state_1301 *ps_states; 1768 }; 1769 }; 1770 1771 struct pfioc_states_v2 { 1772 int ps_len; 1773 uint64_t ps_req_version; 1774 union { 1775 void *ps_buf; 1776 struct pf_state_export *ps_states; 1777 }; 1778 }; 1779 1780 struct pfioc_src_nodes { 1781 int psn_len; 1782 union { 1783 void *psn_buf; 1784 struct pf_src_node *psn_src_nodes; 1785 }; 1786 }; 1787 1788 struct pfioc_if { 1789 char ifname[IFNAMSIZ]; 1790 }; 1791 1792 struct pfioc_tm { 1793 int timeout; 1794 int seconds; 1795 }; 1796 1797 struct pfioc_limit { 1798 int index; 1799 unsigned limit; 1800 }; 1801 1802 struct pfioc_altq_v0 { 1803 u_int32_t action; 1804 u_int32_t ticket; 1805 u_int32_t nr; 1806 struct pf_altq_v0 altq; 1807 }; 1808 1809 struct pfioc_altq_v1 { 1810 u_int32_t action; 1811 u_int32_t ticket; 1812 u_int32_t nr; 1813 /* 1814 * Placed here so code that only uses the above parameters can be 1815 * written entirely in terms of the v0 or v1 type. 1816 */ 1817 u_int32_t version; 1818 struct pf_altq_v1 altq; 1819 }; 1820 1821 /* 1822 * Latest version of struct pfioc_altq_vX. This must move in lock-step with 1823 * the latest version of struct pf_altq_vX as it has that struct as a 1824 * member. 1825 */ 1826 #define PFIOC_ALTQ_VERSION PF_ALTQ_VERSION 1827 1828 struct pfioc_qstats_v0 { 1829 u_int32_t ticket; 1830 u_int32_t nr; 1831 void *buf; 1832 int nbytes; 1833 u_int8_t scheduler; 1834 }; 1835 1836 struct pfioc_qstats_v1 { 1837 u_int32_t ticket; 1838 u_int32_t nr; 1839 void *buf; 1840 int nbytes; 1841 u_int8_t scheduler; 1842 /* 1843 * Placed here so code that only uses the above parameters can be 1844 * written entirely in terms of the v0 or v1 type. 1845 */ 1846 u_int32_t version; /* Requested version of stats struct */ 1847 }; 1848 1849 /* Latest version of struct pfioc_qstats_vX */ 1850 #define PFIOC_QSTATS_VERSION 1 1851 1852 struct pfioc_ruleset { 1853 u_int32_t nr; 1854 char path[MAXPATHLEN]; 1855 char name[PF_ANCHOR_NAME_SIZE]; 1856 }; 1857 1858 #define PF_RULESET_ALTQ (PF_RULESET_MAX) 1859 #define PF_RULESET_TABLE (PF_RULESET_MAX+1) 1860 #define PF_RULESET_ETH (PF_RULESET_MAX+2) 1861 struct pfioc_trans { 1862 int size; /* number of elements */ 1863 int esize; /* size of each element in bytes */ 1864 struct pfioc_trans_e { 1865 int rs_num; 1866 char anchor[MAXPATHLEN]; 1867 u_int32_t ticket; 1868 } *array; 1869 }; 1870 1871 #define PFR_FLAG_ATOMIC 0x00000001 /* unused */ 1872 #define PFR_FLAG_DUMMY 0x00000002 1873 #define PFR_FLAG_FEEDBACK 0x00000004 1874 #define PFR_FLAG_CLSTATS 0x00000008 1875 #define PFR_FLAG_ADDRSTOO 0x00000010 1876 #define PFR_FLAG_REPLACE 0x00000020 1877 #define PFR_FLAG_ALLRSETS 0x00000040 1878 #define PFR_FLAG_ALLMASK 0x0000007F 1879 #ifdef _KERNEL 1880 #define PFR_FLAG_USERIOCTL 0x10000000 1881 #endif 1882 1883 struct pfioc_table { 1884 struct pfr_table pfrio_table; 1885 void *pfrio_buffer; 1886 int pfrio_esize; 1887 int pfrio_size; 1888 int pfrio_size2; 1889 int pfrio_nadd; 1890 int pfrio_ndel; 1891 int pfrio_nchange; 1892 int pfrio_flags; 1893 u_int32_t pfrio_ticket; 1894 }; 1895 #define pfrio_exists pfrio_nadd 1896 #define pfrio_nzero pfrio_nadd 1897 #define pfrio_nmatch pfrio_nadd 1898 #define pfrio_naddr pfrio_size2 1899 #define pfrio_setflag pfrio_size2 1900 #define pfrio_clrflag pfrio_nadd 1901 1902 struct pfioc_iface { 1903 char pfiio_name[IFNAMSIZ]; 1904 void *pfiio_buffer; 1905 int pfiio_esize; 1906 int pfiio_size; 1907 int pfiio_nzero; 1908 int pfiio_flags; 1909 }; 1910 1911 /* 1912 * ioctl operations 1913 */ 1914 1915 #define DIOCSTART _IO ('D', 1) 1916 #define DIOCSTOP _IO ('D', 2) 1917 #define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule) 1918 #define DIOCADDRULENV _IOWR('D', 4, struct pfioc_nv) 1919 #define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule) 1920 #define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule) 1921 #define DIOCGETRULENV _IOWR('D', 7, struct pfioc_nv) 1922 /* XXX cut 8 - 17 */ 1923 #define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill) 1924 #define DIOCCLRSTATESNV _IOWR('D', 18, struct pfioc_nv) 1925 #define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state) 1926 #define DIOCGETSTATENV _IOWR('D', 19, struct pfioc_nv) 1927 #define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if) 1928 #define DIOCGETSTATUS _IOWR('D', 21, struct pf_status) 1929 #define DIOCGETSTATUSNV _IOWR('D', 21, struct pfioc_nv) 1930 #define DIOCCLRSTATUS _IO ('D', 22) 1931 #define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook) 1932 #define DIOCSETDEBUG _IOWR('D', 24, u_int32_t) 1933 #define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states) 1934 #define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule) 1935 /* XXX cut 26 - 28 */ 1936 #define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm) 1937 #define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm) 1938 #define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state) 1939 #define DIOCCLRRULECTRS _IO ('D', 38) 1940 #define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit) 1941 #define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit) 1942 #define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill) 1943 #define DIOCKILLSTATESNV _IOWR('D', 41, struct pfioc_nv) 1944 #define DIOCSTARTALTQ _IO ('D', 42) 1945 #define DIOCSTOPALTQ _IO ('D', 43) 1946 #define DIOCADDALTQV0 _IOWR('D', 45, struct pfioc_altq_v0) 1947 #define DIOCADDALTQV1 _IOWR('D', 45, struct pfioc_altq_v1) 1948 #define DIOCGETALTQSV0 _IOWR('D', 47, struct pfioc_altq_v0) 1949 #define DIOCGETALTQSV1 _IOWR('D', 47, struct pfioc_altq_v1) 1950 #define DIOCGETALTQV0 _IOWR('D', 48, struct pfioc_altq_v0) 1951 #define DIOCGETALTQV1 _IOWR('D', 48, struct pfioc_altq_v1) 1952 #define DIOCCHANGEALTQV0 _IOWR('D', 49, struct pfioc_altq_v0) 1953 #define DIOCCHANGEALTQV1 _IOWR('D', 49, struct pfioc_altq_v1) 1954 #define DIOCGETQSTATSV0 _IOWR('D', 50, struct pfioc_qstats_v0) 1955 #define DIOCGETQSTATSV1 _IOWR('D', 50, struct pfioc_qstats_v1) 1956 #define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr) 1957 #define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr) 1958 #define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr) 1959 #define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr) 1960 #define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr) 1961 /* XXX cut 55 - 57 */ 1962 #define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset) 1963 #define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset) 1964 #define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table) 1965 #define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table) 1966 #define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table) 1967 #define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table) 1968 #define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table) 1969 #define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table) 1970 #define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table) 1971 #define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table) 1972 #define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table) 1973 #define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table) 1974 #define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table) 1975 #define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table) 1976 #define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table) 1977 #define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table) 1978 #define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table) 1979 #define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table) 1980 #define DIOCOSFPFLUSH _IO('D', 78) 1981 #define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl) 1982 #define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl) 1983 #define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans) 1984 #define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans) 1985 #define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans) 1986 #define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes) 1987 #define DIOCCLRSRCNODES _IO('D', 85) 1988 #define DIOCSETHOSTID _IOWR('D', 86, u_int32_t) 1989 #define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface) 1990 #define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface) 1991 #define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface) 1992 #define DIOCKILLSRCNODES _IOWR('D', 91, struct pfioc_src_node_kill) 1993 #define DIOCGIFSPEEDV0 _IOWR('D', 92, struct pf_ifspeed_v0) 1994 #define DIOCGIFSPEEDV1 _IOWR('D', 92, struct pf_ifspeed_v1) 1995 #define DIOCGETSTATESV2 _IOWR('D', 93, struct pfioc_states_v2) 1996 #define DIOCGETSYNCOOKIES _IOWR('D', 94, struct pfioc_nv) 1997 #define DIOCSETSYNCOOKIES _IOWR('D', 95, struct pfioc_nv) 1998 #define DIOCKEEPCOUNTERS _IOWR('D', 96, struct pfioc_nv) 1999 #define DIOCKEEPCOUNTERS_FREEBSD13 _IOWR('D', 92, struct pfioc_nv) 2000 #define DIOCADDETHRULE _IOWR('D', 97, struct pfioc_nv) 2001 #define DIOCGETETHRULE _IOWR('D', 98, struct pfioc_nv) 2002 #define DIOCGETETHRULES _IOWR('D', 99, struct pfioc_nv) 2003 #define DIOCGETETHRULESETS _IOWR('D', 100, struct pfioc_nv) 2004 #define DIOCGETETHRULESET _IOWR('D', 101, struct pfioc_nv) 2005 #define DIOCSETREASS _IOWR('D', 102, u_int32_t) 2006 2007 struct pf_ifspeed_v0 { 2008 char ifname[IFNAMSIZ]; 2009 u_int32_t baudrate; 2010 }; 2011 2012 struct pf_ifspeed_v1 { 2013 char ifname[IFNAMSIZ]; 2014 u_int32_t baudrate32; 2015 /* layout identical to struct pf_ifspeed_v0 up to this point */ 2016 u_int64_t baudrate; 2017 }; 2018 2019 /* Latest version of struct pf_ifspeed_vX */ 2020 #define PF_IFSPEED_VERSION 1 2021 2022 /* 2023 * Compatibility and convenience macros 2024 */ 2025 #ifndef _KERNEL 2026 #ifdef PFIOC_USE_LATEST 2027 /* 2028 * Maintaining in-tree consumers of the ioctl interface is easier when that 2029 * code can be written in terms old names that refer to the latest interface 2030 * version as that reduces the required changes in the consumers to those 2031 * that are functionally necessary to accommodate a new interface version. 2032 */ 2033 #define pfioc_altq __CONCAT(pfioc_altq_v, PFIOC_ALTQ_VERSION) 2034 #define pfioc_qstats __CONCAT(pfioc_qstats_v, PFIOC_QSTATS_VERSION) 2035 #define pf_ifspeed __CONCAT(pf_ifspeed_v, PF_IFSPEED_VERSION) 2036 2037 #define DIOCADDALTQ __CONCAT(DIOCADDALTQV, PFIOC_ALTQ_VERSION) 2038 #define DIOCGETALTQS __CONCAT(DIOCGETALTQSV, PFIOC_ALTQ_VERSION) 2039 #define DIOCGETALTQ __CONCAT(DIOCGETALTQV, PFIOC_ALTQ_VERSION) 2040 #define DIOCCHANGEALTQ __CONCAT(DIOCCHANGEALTQV, PFIOC_ALTQ_VERSION) 2041 #define DIOCGETQSTATS __CONCAT(DIOCGETQSTATSV, PFIOC_QSTATS_VERSION) 2042 #define DIOCGIFSPEED __CONCAT(DIOCGIFSPEEDV, PF_IFSPEED_VERSION) 2043 #else 2044 /* 2045 * When building out-of-tree code that is written for the old interface, 2046 * such as may exist in ports for example, resolve the old struct tags and 2047 * ioctl command names to the v0 versions. 2048 */ 2049 #define pfioc_altq __CONCAT(pfioc_altq_v, 0) 2050 #define pfioc_qstats __CONCAT(pfioc_qstats_v, 0) 2051 #define pf_ifspeed __CONCAT(pf_ifspeed_v, 0) 2052 2053 #define DIOCADDALTQ __CONCAT(DIOCADDALTQV, 0) 2054 #define DIOCGETALTQS __CONCAT(DIOCGETALTQSV, 0) 2055 #define DIOCGETALTQ __CONCAT(DIOCGETALTQV, 0) 2056 #define DIOCCHANGEALTQ __CONCAT(DIOCCHANGEALTQV, 0) 2057 #define DIOCGETQSTATS __CONCAT(DIOCGETQSTATSV, 0) 2058 #define DIOCGIFSPEED __CONCAT(DIOCGIFSPEEDV, 0) 2059 #endif /* PFIOC_USE_LATEST */ 2060 #endif /* _KERNEL */ 2061 2062 #ifdef _KERNEL 2063 LIST_HEAD(pf_ksrc_node_list, pf_ksrc_node); 2064 struct pf_srchash { 2065 struct pf_ksrc_node_list nodes; 2066 struct mtx lock; 2067 }; 2068 2069 struct pf_keyhash { 2070 LIST_HEAD(, pf_state_key) keys; 2071 struct mtx lock; 2072 }; 2073 2074 struct pf_idhash { 2075 LIST_HEAD(, pf_kstate) states; 2076 struct mtx lock; 2077 }; 2078 2079 extern u_long pf_ioctl_maxcount; 2080 extern u_long pf_hashmask; 2081 extern u_long pf_srchashmask; 2082 #define PF_HASHSIZ (131072) 2083 #define PF_SRCHASHSIZ (PF_HASHSIZ/4) 2084 VNET_DECLARE(struct pf_keyhash *, pf_keyhash); 2085 VNET_DECLARE(struct pf_idhash *, pf_idhash); 2086 #define V_pf_keyhash VNET(pf_keyhash) 2087 #define V_pf_idhash VNET(pf_idhash) 2088 VNET_DECLARE(struct pf_srchash *, pf_srchash); 2089 #define V_pf_srchash VNET(pf_srchash) 2090 2091 #define PF_IDHASH(s) (be64toh((s)->id) % (pf_hashmask + 1)) 2092 2093 VNET_DECLARE(void *, pf_swi_cookie); 2094 #define V_pf_swi_cookie VNET(pf_swi_cookie) 2095 VNET_DECLARE(struct intr_event *, pf_swi_ie); 2096 #define V_pf_swi_ie VNET(pf_swi_ie) 2097 2098 VNET_DECLARE(struct unrhdr64, pf_stateid); 2099 #define V_pf_stateid VNET(pf_stateid) 2100 2101 TAILQ_HEAD(pf_altqqueue, pf_altq); 2102 VNET_DECLARE(struct pf_altqqueue, pf_altqs[4]); 2103 #define V_pf_altqs VNET(pf_altqs) 2104 VNET_DECLARE(struct pf_kpalist, pf_pabuf); 2105 #define V_pf_pabuf VNET(pf_pabuf) 2106 2107 VNET_DECLARE(u_int32_t, ticket_altqs_active); 2108 #define V_ticket_altqs_active VNET(ticket_altqs_active) 2109 VNET_DECLARE(u_int32_t, ticket_altqs_inactive); 2110 #define V_ticket_altqs_inactive VNET(ticket_altqs_inactive) 2111 VNET_DECLARE(int, altqs_inactive_open); 2112 #define V_altqs_inactive_open VNET(altqs_inactive_open) 2113 VNET_DECLARE(u_int32_t, ticket_pabuf); 2114 #define V_ticket_pabuf VNET(ticket_pabuf) 2115 VNET_DECLARE(struct pf_altqqueue *, pf_altqs_active); 2116 #define V_pf_altqs_active VNET(pf_altqs_active) 2117 VNET_DECLARE(struct pf_altqqueue *, pf_altq_ifs_active); 2118 #define V_pf_altq_ifs_active VNET(pf_altq_ifs_active) 2119 VNET_DECLARE(struct pf_altqqueue *, pf_altqs_inactive); 2120 #define V_pf_altqs_inactive VNET(pf_altqs_inactive) 2121 VNET_DECLARE(struct pf_altqqueue *, pf_altq_ifs_inactive); 2122 #define V_pf_altq_ifs_inactive VNET(pf_altq_ifs_inactive) 2123 2124 VNET_DECLARE(struct pf_krulequeue, pf_unlinked_rules); 2125 #define V_pf_unlinked_rules VNET(pf_unlinked_rules) 2126 2127 #ifdef PF_WANT_32_TO_64_COUNTER 2128 LIST_HEAD(allkiflist_head, pfi_kkif); 2129 VNET_DECLARE(struct allkiflist_head, pf_allkiflist); 2130 #define V_pf_allkiflist VNET(pf_allkiflist) 2131 VNET_DECLARE(size_t, pf_allkifcount); 2132 #define V_pf_allkifcount VNET(pf_allkifcount) 2133 VNET_DECLARE(struct pfi_kkif *, pf_kifmarker); 2134 #define V_pf_kifmarker VNET(pf_kifmarker) 2135 2136 LIST_HEAD(allrulelist_head, pf_krule); 2137 VNET_DECLARE(struct allrulelist_head, pf_allrulelist); 2138 #define V_pf_allrulelist VNET(pf_allrulelist) 2139 VNET_DECLARE(size_t, pf_allrulecount); 2140 #define V_pf_allrulecount VNET(pf_allrulecount) 2141 VNET_DECLARE(struct pf_krule *, pf_rulemarker); 2142 #define V_pf_rulemarker VNET(pf_rulemarker) 2143 #endif 2144 2145 void pf_initialize(void); 2146 void pf_mtag_initialize(void); 2147 void pf_mtag_cleanup(void); 2148 void pf_cleanup(void); 2149 2150 struct pf_mtag *pf_get_mtag(struct mbuf *); 2151 2152 extern void pf_calc_skip_steps(struct pf_krulequeue *); 2153 #ifdef ALTQ 2154 extern void pf_altq_ifnet_event(struct ifnet *, int); 2155 #endif 2156 VNET_DECLARE(uma_zone_t, pf_state_z); 2157 #define V_pf_state_z VNET(pf_state_z) 2158 VNET_DECLARE(uma_zone_t, pf_state_key_z); 2159 #define V_pf_state_key_z VNET(pf_state_key_z) 2160 VNET_DECLARE(uma_zone_t, pf_state_scrub_z); 2161 #define V_pf_state_scrub_z VNET(pf_state_scrub_z) 2162 2163 extern void pf_purge_thread(void *); 2164 extern void pf_unload_vnet_purge(void); 2165 extern void pf_intr(void *); 2166 extern void pf_purge_expired_src_nodes(void); 2167 2168 extern int pf_unlink_state(struct pf_kstate *); 2169 extern int pf_state_insert(struct pfi_kkif *, 2170 struct pfi_kkif *, 2171 struct pf_state_key *, 2172 struct pf_state_key *, 2173 struct pf_kstate *); 2174 extern struct pf_kstate *pf_alloc_state(int); 2175 extern void pf_free_state(struct pf_kstate *); 2176 2177 static __inline void 2178 pf_ref_state(struct pf_kstate *s) 2179 { 2180 2181 refcount_acquire(&s->refs); 2182 } 2183 2184 static __inline int 2185 pf_release_state(struct pf_kstate *s) 2186 { 2187 2188 if (refcount_release(&s->refs)) { 2189 pf_free_state(s); 2190 return (1); 2191 } else 2192 return (0); 2193 } 2194 2195 static __inline int 2196 pf_release_staten(struct pf_kstate *s, u_int n) 2197 { 2198 2199 if (refcount_releasen(&s->refs, n)) { 2200 pf_free_state(s); 2201 return (1); 2202 } else 2203 return (0); 2204 } 2205 2206 extern struct pf_kstate *pf_find_state_byid(uint64_t, uint32_t); 2207 extern struct pf_kstate *pf_find_state_all(struct pf_state_key_cmp *, 2208 u_int, int *); 2209 extern bool pf_find_state_all_exists(struct pf_state_key_cmp *, 2210 u_int); 2211 extern struct pf_ksrc_node *pf_find_src_node(struct pf_addr *, 2212 struct pf_krule *, sa_family_t, 2213 struct pf_srchash **, bool); 2214 extern void pf_unlink_src_node(struct pf_ksrc_node *); 2215 extern u_int pf_free_src_nodes(struct pf_ksrc_node_list *); 2216 extern void pf_print_state(struct pf_kstate *); 2217 extern void pf_print_flags(u_int8_t); 2218 extern u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t, 2219 u_int8_t); 2220 extern u_int16_t pf_proto_cksum_fixup(struct mbuf *, u_int16_t, 2221 u_int16_t, u_int16_t, u_int8_t); 2222 2223 VNET_DECLARE(struct ifnet *, sync_ifp); 2224 #define V_sync_ifp VNET(sync_ifp); 2225 VNET_DECLARE(struct pf_krule, pf_default_rule); 2226 #define V_pf_default_rule VNET(pf_default_rule) 2227 extern void pf_addrcpy(struct pf_addr *, struct pf_addr *, 2228 sa_family_t); 2229 void pf_free_rule(struct pf_krule *); 2230 2231 int pf_test_eth(int, int, struct ifnet *, struct mbuf **, struct inpcb *); 2232 #ifdef INET 2233 int pf_test(int, int, struct ifnet *, struct mbuf **, struct inpcb *, 2234 struct pf_rule_actions *); 2235 int pf_normalize_ip(struct mbuf **, int, struct pfi_kkif *, u_short *, 2236 struct pf_pdesc *); 2237 #endif /* INET */ 2238 2239 #ifdef INET6 2240 int pf_test6(int, int, struct ifnet *, struct mbuf **, struct inpcb *, 2241 struct pf_rule_actions *); 2242 int pf_normalize_ip6(struct mbuf **, int, struct pfi_kkif *, u_short *, 2243 struct pf_pdesc *); 2244 void pf_poolmask(struct pf_addr *, struct pf_addr*, 2245 struct pf_addr *, struct pf_addr *, sa_family_t); 2246 void pf_addr_inc(struct pf_addr *, sa_family_t); 2247 int pf_refragment6(struct ifnet *, struct mbuf **, struct m_tag *, bool); 2248 #endif /* INET6 */ 2249 2250 u_int32_t pf_new_isn(struct pf_kstate *); 2251 void *pf_pull_hdr(struct mbuf *, int, void *, int, u_short *, u_short *, 2252 sa_family_t); 2253 void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t); 2254 void pf_change_proto_a(struct mbuf *, void *, u_int16_t *, u_int32_t, 2255 u_int8_t); 2256 void pf_change_tcp_a(struct mbuf *, void *, u_int16_t *, u_int32_t); 2257 void pf_patch_16_unaligned(struct mbuf *, u_int16_t *, void *, u_int16_t, 2258 bool, u_int8_t); 2259 void pf_patch_32_unaligned(struct mbuf *, u_int16_t *, void *, u_int32_t, 2260 bool, u_int8_t); 2261 void pf_send_deferred_syn(struct pf_kstate *); 2262 int pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *, 2263 struct pf_addr *, sa_family_t); 2264 int pf_match_addr_range(struct pf_addr *, struct pf_addr *, 2265 struct pf_addr *, sa_family_t); 2266 int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t); 2267 2268 void pf_normalize_init(void); 2269 void pf_normalize_cleanup(void); 2270 int pf_normalize_tcp(int, struct pfi_kkif *, struct mbuf *, int, int, void *, 2271 struct pf_pdesc *); 2272 void pf_normalize_tcp_cleanup(struct pf_kstate *); 2273 int pf_normalize_tcp_init(struct mbuf *, int, struct pf_pdesc *, 2274 struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *); 2275 int pf_normalize_tcp_stateful(struct mbuf *, int, struct pf_pdesc *, 2276 u_short *, struct tcphdr *, struct pf_kstate *, 2277 struct pf_state_peer *, struct pf_state_peer *, int *); 2278 u_int32_t 2279 pf_state_expires(const struct pf_kstate *); 2280 void pf_purge_expired_fragments(void); 2281 void pf_purge_fragments(uint32_t); 2282 int pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kkif *, 2283 int); 2284 int pf_socket_lookup(int, struct pf_pdesc *, struct mbuf *); 2285 struct pf_state_key *pf_alloc_state_key(int); 2286 void pfr_initialize(void); 2287 void pfr_cleanup(void); 2288 int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t); 2289 void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t, 2290 u_int64_t, int, int, int); 2291 int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, sa_family_t); 2292 void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *); 2293 struct pfr_ktable * 2294 pfr_attach_table(struct pf_kruleset *, char *); 2295 struct pfr_ktable * 2296 pfr_eth_attach_table(struct pf_keth_ruleset *, char *); 2297 void pfr_detach_table(struct pfr_ktable *); 2298 int pfr_clr_tables(struct pfr_table *, int *, int); 2299 int pfr_add_tables(struct pfr_table *, int, int *, int); 2300 int pfr_del_tables(struct pfr_table *, int, int *, int); 2301 int pfr_table_count(struct pfr_table *, int); 2302 int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int); 2303 int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int); 2304 int pfr_clr_tstats(struct pfr_table *, int, int *, int); 2305 int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int); 2306 int pfr_clr_addrs(struct pfr_table *, int *, int); 2307 int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *, long); 2308 int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 2309 int); 2310 int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 2311 int); 2312 int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 2313 int *, int *, int *, int, u_int32_t); 2314 int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int); 2315 int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int); 2316 int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *, 2317 int); 2318 int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 2319 int); 2320 int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int); 2321 int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int); 2322 int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int); 2323 int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *, 2324 int *, u_int32_t, int); 2325 2326 MALLOC_DECLARE(PFI_MTYPE); 2327 VNET_DECLARE(struct pfi_kkif *, pfi_all); 2328 #define V_pfi_all VNET(pfi_all) 2329 2330 void pfi_initialize(void); 2331 void pfi_initialize_vnet(void); 2332 void pfi_cleanup(void); 2333 void pfi_cleanup_vnet(void); 2334 void pfi_kkif_ref(struct pfi_kkif *); 2335 void pfi_kkif_unref(struct pfi_kkif *); 2336 struct pfi_kkif *pfi_kkif_find(const char *); 2337 struct pfi_kkif *pfi_kkif_attach(struct pfi_kkif *, const char *); 2338 int pfi_kkif_match(struct pfi_kkif *, struct pfi_kkif *); 2339 void pfi_kkif_purge(void); 2340 int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *, 2341 sa_family_t); 2342 int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t); 2343 void pfi_dynaddr_remove(struct pfi_dynaddr *); 2344 void pfi_dynaddr_copyout(struct pf_addr_wrap *); 2345 void pfi_update_status(const char *, struct pf_status *); 2346 void pfi_get_ifaces(const char *, struct pfi_kif *, int *); 2347 int pfi_set_flags(const char *, int); 2348 int pfi_clear_flags(const char *, int); 2349 2350 int pf_match_tag(struct mbuf *, struct pf_krule *, int *, int); 2351 int pf_tag_packet(struct mbuf *, struct pf_pdesc *, int); 2352 int pf_addr_cmp(struct pf_addr *, struct pf_addr *, 2353 sa_family_t); 2354 2355 u_int16_t pf_get_mss(struct mbuf *, int, u_int16_t, sa_family_t); 2356 u_int8_t pf_get_wscale(struct mbuf *, int, u_int16_t, sa_family_t); 2357 struct mbuf *pf_build_tcp(const struct pf_krule *, sa_family_t, 2358 const struct pf_addr *, const struct pf_addr *, 2359 u_int16_t, u_int16_t, u_int32_t, u_int32_t, 2360 u_int8_t, u_int16_t, u_int16_t, u_int8_t, int, 2361 u_int16_t, int); 2362 void pf_send_tcp(const struct pf_krule *, sa_family_t, 2363 const struct pf_addr *, const struct pf_addr *, 2364 u_int16_t, u_int16_t, u_int32_t, u_int32_t, 2365 u_int8_t, u_int16_t, u_int16_t, u_int8_t, int, 2366 u_int16_t, int); 2367 2368 void pf_syncookies_init(void); 2369 void pf_syncookies_cleanup(void); 2370 int pf_get_syncookies(struct pfioc_nv *); 2371 int pf_set_syncookies(struct pfioc_nv *); 2372 int pf_synflood_check(struct pf_pdesc *); 2373 void pf_syncookie_send(struct mbuf *m, int off, 2374 struct pf_pdesc *); 2375 bool pf_syncookie_check(struct pf_pdesc *); 2376 u_int8_t pf_syncookie_validate(struct pf_pdesc *); 2377 struct mbuf * pf_syncookie_recreate_syn(uint8_t, int, 2378 struct pf_pdesc *); 2379 2380 VNET_DECLARE(struct pf_kstatus, pf_status); 2381 #define V_pf_status VNET(pf_status) 2382 2383 struct pf_limit { 2384 uma_zone_t zone; 2385 u_int limit; 2386 }; 2387 VNET_DECLARE(struct pf_limit, pf_limits[PF_LIMIT_MAX]); 2388 #define V_pf_limits VNET(pf_limits) 2389 2390 #endif /* _KERNEL */ 2391 2392 #ifdef _KERNEL 2393 VNET_DECLARE(struct pf_kanchor_global, pf_anchors); 2394 #define V_pf_anchors VNET(pf_anchors) 2395 VNET_DECLARE(struct pf_kanchor, pf_main_anchor); 2396 #define V_pf_main_anchor VNET(pf_main_anchor) 2397 VNET_DECLARE(struct pf_keth_anchor_global, pf_keth_anchors); 2398 #define V_pf_keth_anchors VNET(pf_keth_anchors) 2399 #define pf_main_ruleset V_pf_main_anchor.ruleset 2400 2401 VNET_DECLARE(struct pf_keth_anchor, pf_main_keth_anchor); 2402 #define V_pf_main_keth_anchor VNET(pf_main_keth_anchor) 2403 VNET_DECLARE(struct pf_keth_ruleset*, pf_keth); 2404 #define V_pf_keth VNET(pf_keth) 2405 2406 void pf_init_kruleset(struct pf_kruleset *); 2407 void pf_init_keth(struct pf_keth_ruleset *); 2408 int pf_kanchor_setup(struct pf_krule *, 2409 const struct pf_kruleset *, const char *); 2410 int pf_kanchor_nvcopyout(const struct pf_kruleset *, 2411 const struct pf_krule *, nvlist_t *); 2412 int pf_kanchor_copyout(const struct pf_kruleset *, 2413 const struct pf_krule *, struct pfioc_rule *); 2414 void pf_kanchor_remove(struct pf_krule *); 2415 void pf_remove_if_empty_kruleset(struct pf_kruleset *); 2416 struct pf_kruleset *pf_find_kruleset(const char *); 2417 struct pf_kruleset *pf_find_or_create_kruleset(const char *); 2418 void pf_rs_initialize(void); 2419 2420 2421 struct pf_krule *pf_krule_alloc(void); 2422 2423 void pf_remove_if_empty_keth_ruleset( 2424 struct pf_keth_ruleset *); 2425 struct pf_keth_ruleset *pf_find_keth_ruleset(const char *); 2426 struct pf_keth_anchor *pf_find_keth_anchor(const char *); 2427 int pf_keth_anchor_setup(struct pf_keth_rule *, 2428 const struct pf_keth_ruleset *, const char *); 2429 int pf_keth_anchor_nvcopyout( 2430 const struct pf_keth_ruleset *, 2431 const struct pf_keth_rule *, nvlist_t *); 2432 struct pf_keth_ruleset *pf_find_or_create_keth_ruleset(const char *); 2433 void pf_keth_anchor_remove(struct pf_keth_rule *); 2434 2435 void pf_krule_free(struct pf_krule *); 2436 #endif 2437 2438 /* The fingerprint functions can be linked into userland programs (tcpdump) */ 2439 int pf_osfp_add(struct pf_osfp_ioctl *); 2440 #ifdef _KERNEL 2441 struct pf_osfp_enlist * 2442 pf_osfp_fingerprint(struct pf_pdesc *, struct mbuf *, int, 2443 const struct tcphdr *); 2444 #endif /* _KERNEL */ 2445 void pf_osfp_flush(void); 2446 int pf_osfp_get(struct pf_osfp_ioctl *); 2447 int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t); 2448 2449 #ifdef _KERNEL 2450 void pf_print_host(struct pf_addr *, u_int16_t, sa_family_t); 2451 2452 void pf_step_into_anchor(struct pf_kanchor_stackframe *, int *, 2453 struct pf_kruleset **, int, struct pf_krule **, 2454 struct pf_krule **, int *); 2455 int pf_step_out_of_anchor(struct pf_kanchor_stackframe *, int *, 2456 struct pf_kruleset **, int, struct pf_krule **, 2457 struct pf_krule **, int *); 2458 void pf_step_into_keth_anchor(struct pf_keth_anchor_stackframe *, 2459 int *, struct pf_keth_ruleset **, 2460 struct pf_keth_rule **, struct pf_keth_rule **, 2461 int *); 2462 int pf_step_out_of_keth_anchor(struct pf_keth_anchor_stackframe *, 2463 int *, struct pf_keth_ruleset **, 2464 struct pf_keth_rule **, struct pf_keth_rule **, 2465 int *); 2466 2467 u_short pf_map_addr(u_int8_t, struct pf_krule *, 2468 struct pf_addr *, struct pf_addr *, 2469 struct pf_addr *, struct pf_ksrc_node **); 2470 struct pf_krule *pf_get_translation(struct pf_pdesc *, struct mbuf *, 2471 int, int, struct pfi_kkif *, struct pf_ksrc_node **, 2472 struct pf_state_key **, struct pf_state_key **, 2473 struct pf_addr *, struct pf_addr *, 2474 uint16_t, uint16_t, struct pf_kanchor_stackframe *); 2475 2476 struct pf_state_key *pf_state_key_setup(struct pf_pdesc *, struct pf_addr *, 2477 struct pf_addr *, u_int16_t, u_int16_t); 2478 struct pf_state_key *pf_state_key_clone(struct pf_state_key *); 2479 2480 int pf_normalize_mss(struct mbuf *m, int off, 2481 struct pf_pdesc *pd, u_int16_t maxmss); 2482 u_int16_t pf_rule_to_scrub_flags(u_int32_t); 2483 #ifdef INET 2484 void pf_scrub_ip(struct mbuf **, uint32_t, uint8_t, uint8_t); 2485 #endif /* INET */ 2486 #ifdef INET6 2487 void pf_scrub_ip6(struct mbuf **, uint32_t, uint8_t, uint8_t); 2488 #endif /* INET6 */ 2489 2490 struct pfi_kkif *pf_kkif_create(int); 2491 void pf_kkif_free(struct pfi_kkif *); 2492 void pf_kkif_zero(struct pfi_kkif *); 2493 #endif /* _KERNEL */ 2494 2495 #endif /* _NET_PFVAR_H_ */ 2496