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 extern struct mtx_padalign pf_unlnkdrules_mtx; 379 #define PF_UNLNKDRULES_LOCK() mtx_lock(&pf_unlnkdrules_mtx) 380 #define PF_UNLNKDRULES_UNLOCK() mtx_unlock(&pf_unlnkdrules_mtx) 381 #define PF_UNLNKDRULES_ASSERT() mtx_assert(&pf_unlnkdrules_mtx, MA_OWNED) 382 383 extern struct sx pf_config_lock; 384 #define PF_CONFIG_LOCK() sx_xlock(&pf_config_lock) 385 #define PF_CONFIG_UNLOCK() sx_xunlock(&pf_config_lock) 386 #define PF_CONFIG_ASSERT() sx_assert(&pf_config_lock, SA_XLOCKED) 387 388 VNET_DECLARE(struct rmlock, pf_rules_lock); 389 #define V_pf_rules_lock VNET(pf_rules_lock) 390 391 #define PF_RULES_RLOCK_TRACKER struct rm_priotracker _pf_rules_tracker 392 #define PF_RULES_RLOCK() rm_rlock(&V_pf_rules_lock, &_pf_rules_tracker) 393 #define PF_RULES_RUNLOCK() rm_runlock(&V_pf_rules_lock, &_pf_rules_tracker) 394 #define PF_RULES_WLOCK() rm_wlock(&V_pf_rules_lock) 395 #define PF_RULES_WUNLOCK() rm_wunlock(&V_pf_rules_lock) 396 #define PF_RULES_WOWNED() rm_wowned(&V_pf_rules_lock) 397 #define PF_RULES_ASSERT() rm_assert(&V_pf_rules_lock, RA_LOCKED) 398 #define PF_RULES_RASSERT() rm_assert(&V_pf_rules_lock, RA_RLOCKED) 399 #define PF_RULES_WASSERT() rm_assert(&V_pf_rules_lock, RA_WLOCKED) 400 401 extern struct mtx_padalign pf_table_stats_lock; 402 #define PF_TABLE_STATS_LOCK() mtx_lock(&pf_table_stats_lock) 403 #define PF_TABLE_STATS_UNLOCK() mtx_unlock(&pf_table_stats_lock) 404 #define PF_TABLE_STATS_OWNED() mtx_owned(&pf_table_stats_lock) 405 #define PF_TABLE_STATS_ASSERT() mtx_assert(&pf_table_stats_lock, MA_OWNED) 406 407 extern struct sx pf_end_lock; 408 409 #define PF_MODVER 1 410 #define PFLOG_MODVER 1 411 #define PFSYNC_MODVER 1 412 413 #define PFLOG_MINVER 1 414 #define PFLOG_PREFVER PFLOG_MODVER 415 #define PFLOG_MAXVER 1 416 #define PFSYNC_MINVER 1 417 #define PFSYNC_PREFVER PFSYNC_MODVER 418 #define PFSYNC_MAXVER 1 419 420 #ifdef INET 421 #ifndef INET6 422 #define PF_INET_ONLY 423 #endif /* ! INET6 */ 424 #endif /* INET */ 425 426 #ifdef INET6 427 #ifndef INET 428 #define PF_INET6_ONLY 429 #endif /* ! INET */ 430 #endif /* INET6 */ 431 432 #ifdef INET 433 #ifdef INET6 434 #define PF_INET_INET6 435 #endif /* INET6 */ 436 #endif /* INET */ 437 438 #else 439 440 #define PF_INET_INET6 441 442 #endif /* _KERNEL */ 443 444 /* Both IPv4 and IPv6 */ 445 #ifdef PF_INET_INET6 446 447 #define PF_AEQ(a, b, c) \ 448 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \ 449 (c == AF_INET6 && (a)->addr32[3] == (b)->addr32[3] && \ 450 (a)->addr32[2] == (b)->addr32[2] && \ 451 (a)->addr32[1] == (b)->addr32[1] && \ 452 (a)->addr32[0] == (b)->addr32[0])) \ 453 454 #define PF_ANEQ(a, b, c) \ 455 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \ 456 (c == AF_INET6 && ((a)->addr32[0] != (b)->addr32[0] || \ 457 (a)->addr32[1] != (b)->addr32[1] || \ 458 (a)->addr32[2] != (b)->addr32[2] || \ 459 (a)->addr32[3] != (b)->addr32[3]))) \ 460 461 #define PF_AZERO(a, c) \ 462 ((c == AF_INET && !(a)->addr32[0]) || \ 463 (c == AF_INET6 && !(a)->addr32[0] && !(a)->addr32[1] && \ 464 !(a)->addr32[2] && !(a)->addr32[3] )) \ 465 466 #define PF_MATCHA(n, a, m, b, f) \ 467 pf_match_addr(n, a, m, b, f) 468 469 #define PF_ACPY(a, b, f) \ 470 pf_addrcpy(a, b, f) 471 472 #define PF_AINC(a, f) \ 473 pf_addr_inc(a, f) 474 475 #define PF_POOLMASK(a, b, c, d, f) \ 476 pf_poolmask(a, b, c, d, f) 477 478 #else 479 480 /* Just IPv6 */ 481 482 #ifdef PF_INET6_ONLY 483 484 #define PF_AEQ(a, b, c) \ 485 ((a)->addr32[3] == (b)->addr32[3] && \ 486 (a)->addr32[2] == (b)->addr32[2] && \ 487 (a)->addr32[1] == (b)->addr32[1] && \ 488 (a)->addr32[0] == (b)->addr32[0]) \ 489 490 #define PF_ANEQ(a, b, c) \ 491 ((a)->addr32[3] != (b)->addr32[3] || \ 492 (a)->addr32[2] != (b)->addr32[2] || \ 493 (a)->addr32[1] != (b)->addr32[1] || \ 494 (a)->addr32[0] != (b)->addr32[0]) \ 495 496 #define PF_AZERO(a, c) \ 497 (!(a)->addr32[0] && \ 498 !(a)->addr32[1] && \ 499 !(a)->addr32[2] && \ 500 !(a)->addr32[3] ) \ 501 502 #define PF_MATCHA(n, a, m, b, f) \ 503 pf_match_addr(n, a, m, b, f) 504 505 #define PF_ACPY(a, b, f) \ 506 pf_addrcpy(a, b, f) 507 508 #define PF_AINC(a, f) \ 509 pf_addr_inc(a, f) 510 511 #define PF_POOLMASK(a, b, c, d, f) \ 512 pf_poolmask(a, b, c, d, f) 513 514 #else 515 516 /* Just IPv4 */ 517 #ifdef PF_INET_ONLY 518 519 #define PF_AEQ(a, b, c) \ 520 ((a)->addr32[0] == (b)->addr32[0]) 521 522 #define PF_ANEQ(a, b, c) \ 523 ((a)->addr32[0] != (b)->addr32[0]) 524 525 #define PF_AZERO(a, c) \ 526 (!(a)->addr32[0]) 527 528 #define PF_MATCHA(n, a, m, b, f) \ 529 pf_match_addr(n, a, m, b, f) 530 531 #define PF_ACPY(a, b, f) \ 532 (a)->v4.s_addr = (b)->v4.s_addr 533 534 #define PF_AINC(a, f) \ 535 do { \ 536 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \ 537 } while (0) 538 539 #define PF_POOLMASK(a, b, c, d, f) \ 540 do { \ 541 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \ 542 (((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \ 543 } while (0) 544 545 #endif /* PF_INET_ONLY */ 546 #endif /* PF_INET6_ONLY */ 547 #endif /* PF_INET_INET6 */ 548 549 /* 550 * XXX callers not FIB-aware in our version of pf yet. 551 * OpenBSD fixed it later it seems, 2010/05/07 13:33:16 claudio. 552 */ 553 #define PF_MISMATCHAW(aw, x, af, neg, ifp, rtid) \ 554 ( \ 555 (((aw)->type == PF_ADDR_NOROUTE && \ 556 pf_routable((x), (af), NULL, (rtid))) || \ 557 (((aw)->type == PF_ADDR_URPFFAILED && (ifp) != NULL && \ 558 pf_routable((x), (af), (ifp), (rtid))) || \ 559 ((aw)->type == PF_ADDR_TABLE && \ 560 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \ 561 ((aw)->type == PF_ADDR_DYNIFTL && \ 562 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \ 563 ((aw)->type == PF_ADDR_RANGE && \ 564 !pf_match_addr_range(&(aw)->v.a.addr, \ 565 &(aw)->v.a.mask, (x), (af))) || \ 566 ((aw)->type == PF_ADDR_ADDRMASK && \ 567 !PF_AZERO(&(aw)->v.a.mask, (af)) && \ 568 !PF_MATCHA(0, &(aw)->v.a.addr, \ 569 &(aw)->v.a.mask, (x), (af))))) != \ 570 (neg) \ 571 ) 572 573 #define PF_ALGNMNT(off) (((off) % 2) == 0) 574 575 #ifdef _KERNEL 576 577 struct pf_kpooladdr { 578 struct pf_addr_wrap addr; 579 TAILQ_ENTRY(pf_kpooladdr) entries; 580 char ifname[IFNAMSIZ]; 581 struct pfi_kkif *kif; 582 }; 583 584 TAILQ_HEAD(pf_kpalist, pf_kpooladdr); 585 586 struct pf_kpool { 587 struct mtx mtx; 588 struct pf_kpalist list; 589 struct pf_kpooladdr *cur; 590 struct pf_poolhashkey key; 591 struct pf_addr counter; 592 struct pf_mape_portset mape; 593 int tblidx; 594 u_int16_t proxy_port[2]; 595 u_int8_t opts; 596 }; 597 598 struct pf_rule_actions { 599 int rtableid; 600 uint16_t qid; 601 uint16_t pqid; 602 uint16_t max_mss; 603 uint8_t log; 604 uint8_t set_tos; 605 uint8_t min_ttl; 606 uint16_t dnpipe; 607 uint16_t dnrpipe; /* Reverse direction pipe */ 608 uint32_t flags; 609 }; 610 611 union pf_keth_rule_ptr { 612 struct pf_keth_rule *ptr; 613 uint32_t nr; 614 }; 615 616 struct pf_keth_rule_addr { 617 uint8_t addr[ETHER_ADDR_LEN]; 618 uint8_t mask[ETHER_ADDR_LEN]; 619 bool neg; 620 uint8_t isset; 621 }; 622 623 struct pf_keth_anchor; 624 625 TAILQ_HEAD(pf_keth_ruleq, pf_keth_rule); 626 627 struct pf_keth_ruleset { 628 struct pf_keth_ruleq rules[2]; 629 struct pf_keth_rules { 630 struct pf_keth_ruleq *rules; 631 int open; 632 uint32_t ticket; 633 } active, inactive; 634 struct epoch_context epoch_ctx; 635 struct vnet *vnet; 636 struct pf_keth_anchor *anchor; 637 }; 638 639 RB_HEAD(pf_keth_anchor_global, pf_keth_anchor); 640 RB_HEAD(pf_keth_anchor_node, pf_keth_anchor); 641 struct pf_keth_anchor { 642 RB_ENTRY(pf_keth_anchor) entry_node; 643 RB_ENTRY(pf_keth_anchor) entry_global; 644 struct pf_keth_anchor *parent; 645 struct pf_keth_anchor_node children; 646 char name[PF_ANCHOR_NAME_SIZE]; 647 char path[MAXPATHLEN]; 648 struct pf_keth_ruleset ruleset; 649 int refcnt; /* anchor rules */ 650 uint8_t anchor_relative; 651 uint8_t anchor_wildcard; 652 }; 653 RB_PROTOTYPE(pf_keth_anchor_node, pf_keth_anchor, entry_node, 654 pf_keth_anchor_compare); 655 RB_PROTOTYPE(pf_keth_anchor_global, pf_keth_anchor, entry_global, 656 pf_keth_anchor_compare); 657 658 struct pf_keth_rule { 659 #define PFE_SKIP_IFP 0 660 #define PFE_SKIP_DIR 1 661 #define PFE_SKIP_PROTO 2 662 #define PFE_SKIP_SRC_ADDR 3 663 #define PFE_SKIP_DST_ADDR 4 664 #define PFE_SKIP_COUNT 5 665 union pf_keth_rule_ptr skip[PFE_SKIP_COUNT]; 666 667 TAILQ_ENTRY(pf_keth_rule) entries; 668 669 struct pf_keth_anchor *anchor; 670 u_int8_t anchor_relative; 671 u_int8_t anchor_wildcard; 672 673 uint32_t nr; 674 675 bool quick; 676 677 /* Filter */ 678 char ifname[IFNAMSIZ]; 679 struct pfi_kkif *kif; 680 bool ifnot; 681 uint8_t direction; 682 uint16_t proto; 683 struct pf_keth_rule_addr src, dst; 684 struct pf_rule_addr ipsrc, ipdst; 685 char match_tagname[PF_TAG_NAME_SIZE]; 686 uint16_t match_tag; 687 bool match_tag_not; 688 689 690 /* Stats */ 691 counter_u64_t evaluations; 692 counter_u64_t packets[2]; 693 counter_u64_t bytes[2]; 694 time_t *timestamp; 695 696 /* Action */ 697 char qname[PF_QNAME_SIZE]; 698 int qid; 699 char tagname[PF_TAG_NAME_SIZE]; 700 uint16_t tag; 701 char bridge_to_name[IFNAMSIZ]; 702 struct pfi_kkif *bridge_to; 703 uint8_t action; 704 uint16_t dnpipe; 705 uint32_t dnflags; 706 }; 707 708 union pf_krule_ptr { 709 struct pf_krule *ptr; 710 u_int32_t nr; 711 }; 712 713 RB_HEAD(pf_krule_global, pf_krule); 714 RB_PROTOTYPE(pf_krule_global, pf_krule, entry_global, pf_krule_compare); 715 716 struct pf_krule { 717 struct pf_rule_addr src; 718 struct pf_rule_addr dst; 719 union pf_krule_ptr skip[PF_SKIP_COUNT]; 720 char label[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE]; 721 uint32_t ridentifier; 722 char ifname[IFNAMSIZ]; 723 char qname[PF_QNAME_SIZE]; 724 char pqname[PF_QNAME_SIZE]; 725 char tagname[PF_TAG_NAME_SIZE]; 726 char match_tagname[PF_TAG_NAME_SIZE]; 727 728 char overload_tblname[PF_TABLE_NAME_SIZE]; 729 730 TAILQ_ENTRY(pf_krule) entries; 731 struct pf_kpool rpool; 732 733 struct pf_counter_u64 evaluations; 734 struct pf_counter_u64 packets[2]; 735 struct pf_counter_u64 bytes[2]; 736 time_t *timestamp; 737 738 struct pfi_kkif *kif; 739 struct pf_kanchor *anchor; 740 struct pfr_ktable *overload_tbl; 741 742 pf_osfp_t os_fingerprint; 743 744 int rtableid; 745 u_int32_t timeout[PFTM_MAX]; 746 u_int32_t max_states; 747 u_int32_t max_src_nodes; 748 u_int32_t max_src_states; 749 u_int32_t max_src_conn; 750 struct { 751 u_int32_t limit; 752 u_int32_t seconds; 753 } max_src_conn_rate; 754 u_int16_t qid; 755 u_int16_t pqid; 756 u_int16_t dnpipe; 757 u_int16_t dnrpipe; 758 u_int32_t free_flags; 759 u_int32_t nr; 760 u_int32_t prob; 761 uid_t cuid; 762 pid_t cpid; 763 764 counter_u64_t states_cur; 765 counter_u64_t states_tot; 766 counter_u64_t src_nodes; 767 768 u_int16_t return_icmp; 769 u_int16_t return_icmp6; 770 u_int16_t max_mss; 771 u_int16_t tag; 772 u_int16_t match_tag; 773 u_int16_t scrub_flags; 774 775 struct pf_rule_uid uid; 776 struct pf_rule_gid gid; 777 778 u_int32_t rule_flag; 779 uint32_t rule_ref; 780 u_int8_t action; 781 u_int8_t direction; 782 u_int8_t log; 783 u_int8_t logif; 784 u_int8_t quick; 785 u_int8_t ifnot; 786 u_int8_t match_tag_not; 787 u_int8_t natpass; 788 789 u_int8_t keep_state; 790 sa_family_t af; 791 u_int8_t proto; 792 u_int8_t type; 793 u_int8_t code; 794 u_int8_t flags; 795 u_int8_t flagset; 796 u_int8_t min_ttl; 797 u_int8_t allow_opts; 798 u_int8_t rt; 799 u_int8_t return_ttl; 800 u_int8_t tos; 801 u_int8_t set_tos; 802 u_int8_t anchor_relative; 803 u_int8_t anchor_wildcard; 804 805 u_int8_t flush; 806 u_int8_t prio; 807 u_int8_t set_prio[2]; 808 809 struct { 810 struct pf_addr addr; 811 u_int16_t port; 812 } divert; 813 u_int8_t md5sum[PF_MD5_DIGEST_LENGTH]; 814 RB_ENTRY(pf_krule) entry_global; 815 816 #ifdef PF_WANT_32_TO_64_COUNTER 817 LIST_ENTRY(pf_krule) allrulelist; 818 bool allrulelinked; 819 #endif 820 }; 821 822 struct pf_krule_item { 823 SLIST_ENTRY(pf_krule_item) entry; 824 struct pf_krule *r; 825 }; 826 827 SLIST_HEAD(pf_krule_slist, pf_krule_item); 828 829 struct pf_ksrc_node { 830 LIST_ENTRY(pf_ksrc_node) entry; 831 struct pf_addr addr; 832 struct pf_addr raddr; 833 struct pf_krule_slist match_rules; 834 union pf_krule_ptr rule; 835 struct pfi_kkif *kif; 836 counter_u64_t bytes[2]; 837 counter_u64_t packets[2]; 838 u_int32_t states; 839 u_int32_t conn; 840 struct pf_threshold conn_rate; 841 u_int32_t creation; 842 u_int32_t expire; 843 sa_family_t af; 844 u_int8_t ruletype; 845 }; 846 #endif 847 848 struct pf_state_scrub { 849 struct timeval pfss_last; /* time received last packet */ 850 u_int32_t pfss_tsecr; /* last echoed timestamp */ 851 u_int32_t pfss_tsval; /* largest timestamp */ 852 u_int32_t pfss_tsval0; /* original timestamp */ 853 u_int16_t pfss_flags; 854 #define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */ 855 #define PFSS_PAWS 0x0010 /* stricter PAWS checks */ 856 #define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */ 857 #define PFSS_DATA_TS 0x0040 /* timestamp on data packets */ 858 #define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */ 859 u_int8_t pfss_ttl; /* stashed TTL */ 860 u_int8_t pad; 861 u_int32_t pfss_ts_mod; /* timestamp modulation */ 862 }; 863 864 struct pf_state_host { 865 struct pf_addr addr; 866 u_int16_t port; 867 u_int16_t pad; 868 }; 869 870 struct pf_state_peer { 871 struct pf_state_scrub *scrub; /* state is scrubbed */ 872 u_int32_t seqlo; /* Max sequence number sent */ 873 u_int32_t seqhi; /* Max the other end ACKd + win */ 874 u_int32_t seqdiff; /* Sequence number modulator */ 875 u_int16_t max_win; /* largest window (pre scaling) */ 876 u_int16_t mss; /* Maximum segment size option */ 877 u_int8_t state; /* active state level */ 878 u_int8_t wscale; /* window scaling factor */ 879 u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */ 880 u_int8_t pad[1]; 881 }; 882 883 /* Keep synced with struct pf_state_key. */ 884 struct pf_state_key_cmp { 885 struct pf_addr addr[2]; 886 u_int16_t port[2]; 887 sa_family_t af; 888 u_int8_t proto; 889 u_int8_t pad[2]; 890 }; 891 892 struct pf_state_key { 893 struct pf_addr addr[2]; 894 u_int16_t port[2]; 895 sa_family_t af; 896 u_int8_t proto; 897 u_int8_t pad[2]; 898 899 LIST_ENTRY(pf_state_key) entry; 900 TAILQ_HEAD(, pf_kstate) states[2]; 901 }; 902 903 /* Keep synced with struct pf_kstate. */ 904 struct pf_state_cmp { 905 u_int64_t id; 906 u_int32_t creatorid; 907 u_int8_t direction; 908 u_int8_t pad[3]; 909 }; 910 911 struct pf_state_scrub_export { 912 uint16_t pfss_flags; 913 uint8_t pfss_ttl; /* stashed TTL */ 914 #define PF_SCRUB_FLAG_VALID 0x01 915 uint8_t scrub_flag; 916 uint32_t pfss_ts_mod; /* timestamp modulation */ 917 }; 918 919 struct pf_state_key_export { 920 struct pf_addr addr[2]; 921 uint16_t port[2]; 922 }; 923 924 struct pf_state_peer_export { 925 struct pf_state_scrub_export scrub; /* state is scrubbed */ 926 uint32_t seqlo; /* Max sequence number sent */ 927 uint32_t seqhi; /* Max the other end ACKd + win */ 928 uint32_t seqdiff; /* Sequence number modulator */ 929 uint16_t max_win; /* largest window (pre scaling) */ 930 uint16_t mss; /* Maximum segment size option */ 931 uint8_t state; /* active state level */ 932 uint8_t wscale; /* window scaling factor */ 933 uint8_t dummy[6]; 934 }; 935 _Static_assert(sizeof(struct pf_state_peer_export) == 32, "size incorrect"); 936 937 struct pf_state_export { 938 uint64_t version; 939 #define PF_STATE_VERSION 20210706 940 uint64_t id; 941 char ifname[IFNAMSIZ]; 942 char orig_ifname[IFNAMSIZ]; 943 struct pf_state_key_export key[2]; 944 struct pf_state_peer_export src; 945 struct pf_state_peer_export dst; 946 struct pf_addr rt_addr; 947 uint32_t rule; 948 uint32_t anchor; 949 uint32_t nat_rule; 950 uint32_t creation; 951 uint32_t expire; 952 uint32_t spare0; 953 uint64_t packets[2]; 954 uint64_t bytes[2]; 955 uint32_t creatorid; 956 uint32_t spare1; 957 sa_family_t af; 958 uint8_t proto; 959 uint8_t direction; 960 uint8_t log; 961 uint8_t state_flags_compat; 962 uint8_t timeout; 963 uint8_t sync_flags; 964 uint8_t updates; 965 uint16_t state_flags; 966 967 uint8_t spare[110]; 968 }; 969 _Static_assert(sizeof(struct pf_state_export) == 384, "size incorrect"); 970 971 #ifdef _KERNEL 972 struct pf_kstate { 973 /* 974 * Area shared with pf_state_cmp 975 */ 976 u_int64_t id; 977 u_int32_t creatorid; 978 u_int8_t direction; 979 u_int8_t pad[3]; 980 /* 981 * end of the area 982 */ 983 984 u_int16_t state_flags; 985 u_int8_t timeout; 986 u_int8_t sync_state; /* PFSYNC_S_x */ 987 u_int8_t sync_updates; /* XXX */ 988 u_int refs; 989 struct mtx *lock; 990 TAILQ_ENTRY(pf_kstate) sync_list; 991 TAILQ_ENTRY(pf_kstate) key_list[2]; 992 LIST_ENTRY(pf_kstate) entry; 993 struct pf_state_peer src; 994 struct pf_state_peer dst; 995 struct pf_krule_slist match_rules; 996 union pf_krule_ptr rule; 997 union pf_krule_ptr anchor; 998 union pf_krule_ptr nat_rule; 999 struct pf_addr rt_addr; 1000 struct pf_state_key *key[2]; /* addresses stack and wire */ 1001 struct pfi_kkif *kif; 1002 struct pfi_kkif *orig_kif; /* The real kif, even if we're a floating state (i.e. if == V_pfi_all). */ 1003 struct pfi_kkif *rt_kif; 1004 struct pf_ksrc_node *src_node; 1005 struct pf_ksrc_node *nat_src_node; 1006 u_int64_t packets[2]; 1007 u_int64_t bytes[2]; 1008 u_int32_t creation; 1009 u_int32_t expire; 1010 u_int32_t pfsync_time; 1011 u_int16_t qid; 1012 u_int16_t pqid; 1013 u_int16_t dnpipe; 1014 u_int16_t dnrpipe; 1015 u_int16_t tag; 1016 u_int8_t log; 1017 int rtableid; 1018 u_int8_t min_ttl; 1019 u_int8_t set_tos; 1020 u_int16_t max_mss; 1021 }; 1022 1023 /* 1024 * Size <= fits 12 objects per page on LP64. Try to not grow the struct beyond that. 1025 */ 1026 _Static_assert(sizeof(struct pf_kstate) <= 336, "pf_kstate size crosses 336 bytes"); 1027 #endif 1028 1029 /* 1030 * Unified state structures for pulling states out of the kernel 1031 * used by pfsync(4) and the pf(4) ioctl. 1032 */ 1033 struct pfsync_state_scrub { 1034 u_int16_t pfss_flags; 1035 u_int8_t pfss_ttl; /* stashed TTL */ 1036 #define PFSYNC_SCRUB_FLAG_VALID 0x01 1037 u_int8_t scrub_flag; 1038 u_int32_t pfss_ts_mod; /* timestamp modulation */ 1039 } __packed; 1040 1041 struct pfsync_state_peer { 1042 struct pfsync_state_scrub scrub; /* state is scrubbed */ 1043 u_int32_t seqlo; /* Max sequence number sent */ 1044 u_int32_t seqhi; /* Max the other end ACKd + win */ 1045 u_int32_t seqdiff; /* Sequence number modulator */ 1046 u_int16_t max_win; /* largest window (pre scaling) */ 1047 u_int16_t mss; /* Maximum segment size option */ 1048 u_int8_t state; /* active state level */ 1049 u_int8_t wscale; /* window scaling factor */ 1050 u_int8_t pad[6]; 1051 } __packed; 1052 1053 struct pfsync_state_key { 1054 struct pf_addr addr[2]; 1055 u_int16_t port[2]; 1056 }; 1057 1058 struct pfsync_state { 1059 u_int64_t id; 1060 char ifname[IFNAMSIZ]; 1061 struct pfsync_state_key key[2]; 1062 struct pfsync_state_peer src; 1063 struct pfsync_state_peer dst; 1064 struct pf_addr rt_addr; 1065 u_int32_t rule; 1066 u_int32_t anchor; 1067 u_int32_t nat_rule; 1068 u_int32_t creation; 1069 u_int32_t expire; 1070 u_int32_t packets[2][2]; 1071 u_int32_t bytes[2][2]; 1072 u_int32_t creatorid; 1073 sa_family_t af; 1074 u_int8_t proto; 1075 u_int8_t direction; 1076 u_int16_t state_flags; 1077 u_int8_t log; 1078 u_int8_t state_flags_compat; 1079 u_int8_t timeout; 1080 u_int8_t sync_flags; 1081 u_int8_t updates; 1082 } __packed; 1083 1084 #ifdef _KERNEL 1085 /* pfsync */ 1086 typedef int pfsync_state_import_t(struct pfsync_state *, int); 1087 typedef void pfsync_insert_state_t(struct pf_kstate *); 1088 typedef void pfsync_update_state_t(struct pf_kstate *); 1089 typedef void pfsync_delete_state_t(struct pf_kstate *); 1090 typedef void pfsync_clear_states_t(u_int32_t, const char *); 1091 typedef int pfsync_defer_t(struct pf_kstate *, struct mbuf *); 1092 typedef void pfsync_detach_ifnet_t(struct ifnet *); 1093 1094 VNET_DECLARE(pfsync_state_import_t *, pfsync_state_import_ptr); 1095 #define V_pfsync_state_import_ptr VNET(pfsync_state_import_ptr) 1096 VNET_DECLARE(pfsync_insert_state_t *, pfsync_insert_state_ptr); 1097 #define V_pfsync_insert_state_ptr VNET(pfsync_insert_state_ptr) 1098 VNET_DECLARE(pfsync_update_state_t *, pfsync_update_state_ptr); 1099 #define V_pfsync_update_state_ptr VNET(pfsync_update_state_ptr) 1100 VNET_DECLARE(pfsync_delete_state_t *, pfsync_delete_state_ptr); 1101 #define V_pfsync_delete_state_ptr VNET(pfsync_delete_state_ptr) 1102 VNET_DECLARE(pfsync_clear_states_t *, pfsync_clear_states_ptr); 1103 #define V_pfsync_clear_states_ptr VNET(pfsync_clear_states_ptr) 1104 VNET_DECLARE(pfsync_defer_t *, pfsync_defer_ptr); 1105 #define V_pfsync_defer_ptr VNET(pfsync_defer_ptr) 1106 extern pfsync_detach_ifnet_t *pfsync_detach_ifnet_ptr; 1107 1108 void pfsync_state_export(struct pfsync_state *, 1109 struct pf_kstate *); 1110 void pf_state_export(struct pf_state_export *, 1111 struct pf_kstate *); 1112 1113 /* pflog */ 1114 struct pf_kruleset; 1115 struct pf_pdesc; 1116 typedef int pflog_packet_t(struct pfi_kkif *, struct mbuf *, sa_family_t, 1117 u_int8_t, u_int8_t, struct pf_krule *, struct pf_krule *, 1118 struct pf_kruleset *, struct pf_pdesc *, int); 1119 extern pflog_packet_t *pflog_packet_ptr; 1120 1121 #endif /* _KERNEL */ 1122 1123 #define PFSYNC_FLAG_SRCNODE 0x04 1124 #define PFSYNC_FLAG_NATSRCNODE 0x08 1125 1126 /* for copies to/from network byte order */ 1127 /* ioctl interface also uses network byte order */ 1128 #define pf_state_peer_hton(s,d) do { \ 1129 (d)->seqlo = htonl((s)->seqlo); \ 1130 (d)->seqhi = htonl((s)->seqhi); \ 1131 (d)->seqdiff = htonl((s)->seqdiff); \ 1132 (d)->max_win = htons((s)->max_win); \ 1133 (d)->mss = htons((s)->mss); \ 1134 (d)->state = (s)->state; \ 1135 (d)->wscale = (s)->wscale; \ 1136 if ((s)->scrub) { \ 1137 (d)->scrub.pfss_flags = \ 1138 htons((s)->scrub->pfss_flags & PFSS_TIMESTAMP); \ 1139 (d)->scrub.pfss_ttl = (s)->scrub->pfss_ttl; \ 1140 (d)->scrub.pfss_ts_mod = htonl((s)->scrub->pfss_ts_mod);\ 1141 (d)->scrub.scrub_flag = PFSYNC_SCRUB_FLAG_VALID; \ 1142 } \ 1143 } while (0) 1144 1145 #define pf_state_peer_ntoh(s,d) do { \ 1146 (d)->seqlo = ntohl((s)->seqlo); \ 1147 (d)->seqhi = ntohl((s)->seqhi); \ 1148 (d)->seqdiff = ntohl((s)->seqdiff); \ 1149 (d)->max_win = ntohs((s)->max_win); \ 1150 (d)->mss = ntohs((s)->mss); \ 1151 (d)->state = (s)->state; \ 1152 (d)->wscale = (s)->wscale; \ 1153 if ((s)->scrub.scrub_flag == PFSYNC_SCRUB_FLAG_VALID && \ 1154 (d)->scrub != NULL) { \ 1155 (d)->scrub->pfss_flags = \ 1156 ntohs((s)->scrub.pfss_flags) & PFSS_TIMESTAMP; \ 1157 (d)->scrub->pfss_ttl = (s)->scrub.pfss_ttl; \ 1158 (d)->scrub->pfss_ts_mod = ntohl((s)->scrub.pfss_ts_mod);\ 1159 } \ 1160 } while (0) 1161 1162 #define pf_state_counter_hton(s,d) do { \ 1163 d[0] = htonl((s>>32)&0xffffffff); \ 1164 d[1] = htonl(s&0xffffffff); \ 1165 } while (0) 1166 1167 #define pf_state_counter_from_pfsync(s) \ 1168 (((u_int64_t)(s[0])<<32) | (u_int64_t)(s[1])) 1169 1170 #define pf_state_counter_ntoh(s,d) do { \ 1171 d = ntohl(s[0]); \ 1172 d = d<<32; \ 1173 d += ntohl(s[1]); \ 1174 } while (0) 1175 1176 TAILQ_HEAD(pf_krulequeue, pf_krule); 1177 1178 struct pf_kanchor; 1179 1180 struct pf_kruleset { 1181 struct { 1182 struct pf_krulequeue queues[2]; 1183 struct { 1184 struct pf_krulequeue *ptr; 1185 struct pf_krule **ptr_array; 1186 u_int32_t rcount; 1187 u_int32_t ticket; 1188 int open; 1189 struct pf_krule_global *tree; 1190 } active, inactive; 1191 } rules[PF_RULESET_MAX]; 1192 struct pf_kanchor *anchor; 1193 u_int32_t tticket; 1194 int tables; 1195 int topen; 1196 }; 1197 1198 RB_HEAD(pf_kanchor_global, pf_kanchor); 1199 RB_HEAD(pf_kanchor_node, pf_kanchor); 1200 struct pf_kanchor { 1201 RB_ENTRY(pf_kanchor) entry_global; 1202 RB_ENTRY(pf_kanchor) entry_node; 1203 struct pf_kanchor *parent; 1204 struct pf_kanchor_node children; 1205 char name[PF_ANCHOR_NAME_SIZE]; 1206 char path[MAXPATHLEN]; 1207 struct pf_kruleset ruleset; 1208 int refcnt; /* anchor rules */ 1209 }; 1210 RB_PROTOTYPE(pf_kanchor_global, pf_kanchor, entry_global, pf_anchor_compare); 1211 RB_PROTOTYPE(pf_kanchor_node, pf_kanchor, entry_node, pf_kanchor_compare); 1212 1213 #define PF_RESERVED_ANCHOR "_pf" 1214 1215 #define PFR_TFLAG_PERSIST 0x00000001 1216 #define PFR_TFLAG_CONST 0x00000002 1217 #define PFR_TFLAG_ACTIVE 0x00000004 1218 #define PFR_TFLAG_INACTIVE 0x00000008 1219 #define PFR_TFLAG_REFERENCED 0x00000010 1220 #define PFR_TFLAG_REFDANCHOR 0x00000020 1221 #define PFR_TFLAG_COUNTERS 0x00000040 1222 /* Adjust masks below when adding flags. */ 1223 #define PFR_TFLAG_USRMASK (PFR_TFLAG_PERSIST | \ 1224 PFR_TFLAG_CONST | \ 1225 PFR_TFLAG_COUNTERS) 1226 #define PFR_TFLAG_SETMASK (PFR_TFLAG_ACTIVE | \ 1227 PFR_TFLAG_INACTIVE | \ 1228 PFR_TFLAG_REFERENCED | \ 1229 PFR_TFLAG_REFDANCHOR) 1230 #define PFR_TFLAG_ALLMASK (PFR_TFLAG_PERSIST | \ 1231 PFR_TFLAG_CONST | \ 1232 PFR_TFLAG_ACTIVE | \ 1233 PFR_TFLAG_INACTIVE | \ 1234 PFR_TFLAG_REFERENCED | \ 1235 PFR_TFLAG_REFDANCHOR | \ 1236 PFR_TFLAG_COUNTERS) 1237 1238 struct pf_kanchor_stackframe; 1239 struct pf_keth_anchor_stackframe; 1240 1241 struct pfr_table { 1242 char pfrt_anchor[MAXPATHLEN]; 1243 char pfrt_name[PF_TABLE_NAME_SIZE]; 1244 u_int32_t pfrt_flags; 1245 u_int8_t pfrt_fback; 1246 }; 1247 1248 enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED, 1249 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE, 1250 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_NOCOUNT, PFR_FB_MAX }; 1251 1252 struct pfr_addr { 1253 union { 1254 struct in_addr _pfra_ip4addr; 1255 struct in6_addr _pfra_ip6addr; 1256 } pfra_u; 1257 u_int8_t pfra_af; 1258 u_int8_t pfra_net; 1259 u_int8_t pfra_not; 1260 u_int8_t pfra_fback; 1261 }; 1262 #define pfra_ip4addr pfra_u._pfra_ip4addr 1263 #define pfra_ip6addr pfra_u._pfra_ip6addr 1264 1265 enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX }; 1266 enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX }; 1267 enum { PFR_TYPE_PACKETS, PFR_TYPE_BYTES, PFR_TYPE_MAX }; 1268 #define PFR_NUM_COUNTERS (PFR_DIR_MAX * PFR_OP_ADDR_MAX * PFR_TYPE_MAX) 1269 #define PFR_OP_XPASS PFR_OP_ADDR_MAX 1270 1271 struct pfr_astats { 1272 struct pfr_addr pfras_a; 1273 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1274 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1275 long pfras_tzero; 1276 }; 1277 1278 enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX }; 1279 1280 struct pfr_tstats { 1281 struct pfr_table pfrts_t; 1282 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1283 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1284 u_int64_t pfrts_match; 1285 u_int64_t pfrts_nomatch; 1286 long pfrts_tzero; 1287 int pfrts_cnt; 1288 int pfrts_refcnt[PFR_REFCNT_MAX]; 1289 }; 1290 1291 #ifdef _KERNEL 1292 1293 struct pfr_kstate_counter { 1294 counter_u64_t pkc_pcpu; 1295 u_int64_t pkc_zero; 1296 }; 1297 1298 static inline int 1299 pfr_kstate_counter_init(struct pfr_kstate_counter *pfrc, int flags) 1300 { 1301 1302 pfrc->pkc_zero = 0; 1303 pfrc->pkc_pcpu = counter_u64_alloc(flags); 1304 if (pfrc->pkc_pcpu == NULL) 1305 return (ENOMEM); 1306 return (0); 1307 } 1308 1309 static inline void 1310 pfr_kstate_counter_deinit(struct pfr_kstate_counter *pfrc) 1311 { 1312 1313 counter_u64_free(pfrc->pkc_pcpu); 1314 } 1315 1316 static inline u_int64_t 1317 pfr_kstate_counter_fetch(struct pfr_kstate_counter *pfrc) 1318 { 1319 u_int64_t c; 1320 1321 c = counter_u64_fetch(pfrc->pkc_pcpu); 1322 c -= pfrc->pkc_zero; 1323 return (c); 1324 } 1325 1326 static inline void 1327 pfr_kstate_counter_zero(struct pfr_kstate_counter *pfrc) 1328 { 1329 u_int64_t c; 1330 1331 c = counter_u64_fetch(pfrc->pkc_pcpu); 1332 pfrc->pkc_zero = c; 1333 } 1334 1335 static inline void 1336 pfr_kstate_counter_add(struct pfr_kstate_counter *pfrc, int64_t n) 1337 { 1338 1339 counter_u64_add(pfrc->pkc_pcpu, n); 1340 } 1341 1342 struct pfr_ktstats { 1343 struct pfr_table pfrts_t; 1344 struct pfr_kstate_counter pfrkts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1345 struct pfr_kstate_counter pfrkts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1346 struct pfr_kstate_counter pfrkts_match; 1347 struct pfr_kstate_counter pfrkts_nomatch; 1348 long pfrkts_tzero; 1349 int pfrkts_cnt; 1350 int pfrkts_refcnt[PFR_REFCNT_MAX]; 1351 }; 1352 1353 #endif /* _KERNEL */ 1354 1355 #define pfrts_name pfrts_t.pfrt_name 1356 #define pfrts_flags pfrts_t.pfrt_flags 1357 1358 #ifndef _SOCKADDR_UNION_DEFINED 1359 #define _SOCKADDR_UNION_DEFINED 1360 union sockaddr_union { 1361 struct sockaddr sa; 1362 struct sockaddr_in sin; 1363 struct sockaddr_in6 sin6; 1364 }; 1365 #endif /* _SOCKADDR_UNION_DEFINED */ 1366 1367 struct pfr_kcounters { 1368 counter_u64_t pfrkc_counters; 1369 long pfrkc_tzero; 1370 }; 1371 #define pfr_kentry_counter(kc, dir, op, t) \ 1372 ((kc)->pfrkc_counters + \ 1373 (dir) * PFR_OP_ADDR_MAX * PFR_TYPE_MAX + (op) * PFR_TYPE_MAX + (t)) 1374 1375 #ifdef _KERNEL 1376 SLIST_HEAD(pfr_kentryworkq, pfr_kentry); 1377 struct pfr_kentry { 1378 struct radix_node pfrke_node[2]; 1379 union sockaddr_union pfrke_sa; 1380 SLIST_ENTRY(pfr_kentry) pfrke_workq; 1381 struct pfr_kcounters pfrke_counters; 1382 u_int8_t pfrke_af; 1383 u_int8_t pfrke_net; 1384 u_int8_t pfrke_not; 1385 u_int8_t pfrke_mark; 1386 }; 1387 1388 SLIST_HEAD(pfr_ktableworkq, pfr_ktable); 1389 RB_HEAD(pfr_ktablehead, pfr_ktable); 1390 struct pfr_ktable { 1391 struct pfr_ktstats pfrkt_kts; 1392 RB_ENTRY(pfr_ktable) pfrkt_tree; 1393 SLIST_ENTRY(pfr_ktable) pfrkt_workq; 1394 struct radix_node_head *pfrkt_ip4; 1395 struct radix_node_head *pfrkt_ip6; 1396 struct pfr_ktable *pfrkt_shadow; 1397 struct pfr_ktable *pfrkt_root; 1398 struct pf_kruleset *pfrkt_rs; 1399 long pfrkt_larg; 1400 int pfrkt_nflags; 1401 }; 1402 #define pfrkt_t pfrkt_kts.pfrts_t 1403 #define pfrkt_name pfrkt_t.pfrt_name 1404 #define pfrkt_anchor pfrkt_t.pfrt_anchor 1405 #define pfrkt_ruleset pfrkt_t.pfrt_ruleset 1406 #define pfrkt_flags pfrkt_t.pfrt_flags 1407 #define pfrkt_cnt pfrkt_kts.pfrkts_cnt 1408 #define pfrkt_refcnt pfrkt_kts.pfrkts_refcnt 1409 #define pfrkt_packets pfrkt_kts.pfrkts_packets 1410 #define pfrkt_bytes pfrkt_kts.pfrkts_bytes 1411 #define pfrkt_match pfrkt_kts.pfrkts_match 1412 #define pfrkt_nomatch pfrkt_kts.pfrkts_nomatch 1413 #define pfrkt_tzero pfrkt_kts.pfrkts_tzero 1414 #endif 1415 1416 #ifdef _KERNEL 1417 struct pfi_kkif { 1418 char pfik_name[IFNAMSIZ]; 1419 union { 1420 RB_ENTRY(pfi_kkif) _pfik_tree; 1421 LIST_ENTRY(pfi_kkif) _pfik_list; 1422 } _pfik_glue; 1423 #define pfik_tree _pfik_glue._pfik_tree 1424 #define pfik_list _pfik_glue._pfik_list 1425 struct pf_counter_u64 pfik_packets[2][2][2]; 1426 struct pf_counter_u64 pfik_bytes[2][2][2]; 1427 u_int32_t pfik_tzero; 1428 u_int pfik_flags; 1429 struct ifnet *pfik_ifp; 1430 struct ifg_group *pfik_group; 1431 u_int pfik_rulerefs; 1432 TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs; 1433 #ifdef PF_WANT_32_TO_64_COUNTER 1434 LIST_ENTRY(pfi_kkif) pfik_allkiflist; 1435 #endif 1436 }; 1437 #endif 1438 1439 #define PFI_IFLAG_REFS 0x0001 /* has state references */ 1440 #define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */ 1441 1442 #ifdef _KERNEL 1443 struct pf_pdesc { 1444 struct { 1445 int done; 1446 uid_t uid; 1447 gid_t gid; 1448 } lookup; 1449 u_int64_t tot_len; /* Make Mickey money */ 1450 union pf_headers { 1451 struct tcphdr tcp; 1452 struct udphdr udp; 1453 struct icmp icmp; 1454 #ifdef INET6 1455 struct icmp6_hdr icmp6; 1456 #endif /* INET6 */ 1457 char any[0]; 1458 } hdr; 1459 1460 struct pf_krule *nat_rule; /* nat/rdr rule applied to packet */ 1461 struct pf_addr *src; /* src address */ 1462 struct pf_addr *dst; /* dst address */ 1463 u_int16_t *sport; 1464 u_int16_t *dport; 1465 struct pf_mtag *pf_mtag; 1466 struct pf_rule_actions act; 1467 1468 u_int32_t p_len; /* total length of payload */ 1469 1470 u_int16_t *ip_sum; 1471 u_int16_t *proto_sum; 1472 u_int16_t flags; /* Let SCRUB trigger behavior in 1473 * state code. Easier than tags */ 1474 #define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */ 1475 #define PFDESC_IP_REAS 0x0002 /* IP frags would've been reassembled */ 1476 sa_family_t af; 1477 u_int8_t proto; 1478 u_int8_t tos; 1479 u_int8_t dir; /* direction */ 1480 u_int8_t sidx; /* key index for source */ 1481 u_int8_t didx; /* key index for destination */ 1482 }; 1483 #endif 1484 1485 /* flags for RDR options */ 1486 #define PF_DPORT_RANGE 0x01 /* Dest port uses range */ 1487 #define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */ 1488 1489 /* UDP state enumeration */ 1490 #define PFUDPS_NO_TRAFFIC 0 1491 #define PFUDPS_SINGLE 1 1492 #define PFUDPS_MULTIPLE 2 1493 1494 #define PFUDPS_NSTATES 3 /* number of state levels */ 1495 1496 #define PFUDPS_NAMES { \ 1497 "NO_TRAFFIC", \ 1498 "SINGLE", \ 1499 "MULTIPLE", \ 1500 NULL \ 1501 } 1502 1503 /* Other protocol state enumeration */ 1504 #define PFOTHERS_NO_TRAFFIC 0 1505 #define PFOTHERS_SINGLE 1 1506 #define PFOTHERS_MULTIPLE 2 1507 1508 #define PFOTHERS_NSTATES 3 /* number of state levels */ 1509 1510 #define PFOTHERS_NAMES { \ 1511 "NO_TRAFFIC", \ 1512 "SINGLE", \ 1513 "MULTIPLE", \ 1514 NULL \ 1515 } 1516 1517 #define ACTION_SET(a, x) \ 1518 do { \ 1519 if ((a) != NULL) \ 1520 *(a) = (x); \ 1521 } while (0) 1522 1523 #define REASON_SET(a, x) \ 1524 do { \ 1525 if ((a) != NULL) \ 1526 *(a) = (x); \ 1527 if (x < PFRES_MAX) \ 1528 counter_u64_add(V_pf_status.counters[x], 1); \ 1529 } while (0) 1530 1531 enum pf_syncookies_mode { 1532 PF_SYNCOOKIES_NEVER = 0, 1533 PF_SYNCOOKIES_ALWAYS = 1, 1534 PF_SYNCOOKIES_ADAPTIVE = 2, 1535 PF_SYNCOOKIES_MODE_MAX = PF_SYNCOOKIES_ADAPTIVE 1536 }; 1537 1538 #define PF_SYNCOOKIES_HIWATPCT 25 1539 #define PF_SYNCOOKIES_LOWATPCT (PF_SYNCOOKIES_HIWATPCT / 2) 1540 1541 #ifdef _KERNEL 1542 struct pf_kstatus { 1543 counter_u64_t counters[PFRES_MAX]; /* reason for passing/dropping */ 1544 counter_u64_t lcounters[KLCNT_MAX]; /* limit counters */ 1545 struct pf_counter_u64 fcounters[FCNT_MAX]; /* state operation counters */ 1546 counter_u64_t scounters[SCNT_MAX]; /* src_node operation counters */ 1547 uint32_t states; 1548 uint32_t src_nodes; 1549 uint32_t running; 1550 uint32_t since; 1551 uint32_t debug; 1552 uint32_t hostid; 1553 char ifname[IFNAMSIZ]; 1554 uint8_t pf_chksum[PF_MD5_DIGEST_LENGTH]; 1555 bool keep_counters; 1556 enum pf_syncookies_mode syncookies_mode; 1557 bool syncookies_active; 1558 uint64_t syncookies_inflight[2]; 1559 uint32_t states_halfopen; 1560 uint32_t reass; 1561 }; 1562 #endif 1563 1564 struct pf_divert { 1565 union { 1566 struct in_addr ipv4; 1567 struct in6_addr ipv6; 1568 } addr; 1569 u_int16_t port; 1570 }; 1571 1572 #define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */ 1573 #define PFR_KENTRY_HIWAT 200000 /* Number of table entries */ 1574 1575 /* 1576 * Limit the length of the fragment queue traversal. Remember 1577 * search entry points based on the fragment offset. 1578 */ 1579 #define PF_FRAG_ENTRY_POINTS 16 1580 1581 /* 1582 * The number of entries in the fragment queue must be limited 1583 * to avoid DoS by linear searching. Instead of a global limit, 1584 * use a limit per entry point. For large packets these sum up. 1585 */ 1586 #define PF_FRAG_ENTRY_LIMIT 64 1587 1588 /* 1589 * ioctl parameter structures 1590 */ 1591 1592 struct pfioc_pooladdr { 1593 u_int32_t action; 1594 u_int32_t ticket; 1595 u_int32_t nr; 1596 u_int32_t r_num; 1597 u_int8_t r_action; 1598 u_int8_t r_last; 1599 u_int8_t af; 1600 char anchor[MAXPATHLEN]; 1601 struct pf_pooladdr addr; 1602 }; 1603 1604 struct pfioc_rule { 1605 u_int32_t action; 1606 u_int32_t ticket; 1607 u_int32_t pool_ticket; 1608 u_int32_t nr; 1609 char anchor[MAXPATHLEN]; 1610 char anchor_call[MAXPATHLEN]; 1611 struct pf_rule rule; 1612 }; 1613 1614 struct pfioc_natlook { 1615 struct pf_addr saddr; 1616 struct pf_addr daddr; 1617 struct pf_addr rsaddr; 1618 struct pf_addr rdaddr; 1619 u_int16_t sport; 1620 u_int16_t dport; 1621 u_int16_t rsport; 1622 u_int16_t rdport; 1623 sa_family_t af; 1624 u_int8_t proto; 1625 u_int8_t direction; 1626 }; 1627 1628 struct pfioc_state { 1629 struct pfsync_state state; 1630 }; 1631 1632 struct pfioc_src_node_kill { 1633 sa_family_t psnk_af; 1634 struct pf_rule_addr psnk_src; 1635 struct pf_rule_addr psnk_dst; 1636 u_int psnk_killed; 1637 }; 1638 1639 #ifdef _KERNEL 1640 struct pf_kstate_kill { 1641 struct pf_state_cmp psk_pfcmp; 1642 sa_family_t psk_af; 1643 int psk_proto; 1644 struct pf_rule_addr psk_src; 1645 struct pf_rule_addr psk_dst; 1646 struct pf_rule_addr psk_rt_addr; 1647 char psk_ifname[IFNAMSIZ]; 1648 char psk_label[PF_RULE_LABEL_SIZE]; 1649 u_int psk_killed; 1650 bool psk_kill_match; 1651 }; 1652 #endif 1653 1654 struct pfioc_state_kill { 1655 struct pf_state_cmp psk_pfcmp; 1656 sa_family_t psk_af; 1657 int psk_proto; 1658 struct pf_rule_addr psk_src; 1659 struct pf_rule_addr psk_dst; 1660 char psk_ifname[IFNAMSIZ]; 1661 char psk_label[PF_RULE_LABEL_SIZE]; 1662 u_int psk_killed; 1663 }; 1664 1665 struct pfioc_states { 1666 int ps_len; 1667 union { 1668 caddr_t psu_buf; 1669 struct pfsync_state *psu_states; 1670 } ps_u; 1671 #define ps_buf ps_u.psu_buf 1672 #define ps_states ps_u.psu_states 1673 }; 1674 1675 struct pfioc_states_v2 { 1676 int ps_len; 1677 uint64_t ps_req_version; 1678 union { 1679 caddr_t psu_buf; 1680 struct pf_state_export *psu_states; 1681 } ps_u; 1682 #define ps_buf ps_u.psu_buf 1683 #define ps_states ps_u.psu_states 1684 }; 1685 1686 struct pfioc_src_nodes { 1687 int psn_len; 1688 union { 1689 caddr_t psu_buf; 1690 struct pf_src_node *psu_src_nodes; 1691 } psn_u; 1692 #define psn_buf psn_u.psu_buf 1693 #define psn_src_nodes psn_u.psu_src_nodes 1694 }; 1695 1696 struct pfioc_if { 1697 char ifname[IFNAMSIZ]; 1698 }; 1699 1700 struct pfioc_tm { 1701 int timeout; 1702 int seconds; 1703 }; 1704 1705 struct pfioc_limit { 1706 int index; 1707 unsigned limit; 1708 }; 1709 1710 struct pfioc_altq_v0 { 1711 u_int32_t action; 1712 u_int32_t ticket; 1713 u_int32_t nr; 1714 struct pf_altq_v0 altq; 1715 }; 1716 1717 struct pfioc_altq_v1 { 1718 u_int32_t action; 1719 u_int32_t ticket; 1720 u_int32_t nr; 1721 /* 1722 * Placed here so code that only uses the above parameters can be 1723 * written entirely in terms of the v0 or v1 type. 1724 */ 1725 u_int32_t version; 1726 struct pf_altq_v1 altq; 1727 }; 1728 1729 /* 1730 * Latest version of struct pfioc_altq_vX. This must move in lock-step with 1731 * the latest version of struct pf_altq_vX as it has that struct as a 1732 * member. 1733 */ 1734 #define PFIOC_ALTQ_VERSION PF_ALTQ_VERSION 1735 1736 struct pfioc_qstats_v0 { 1737 u_int32_t ticket; 1738 u_int32_t nr; 1739 void *buf; 1740 int nbytes; 1741 u_int8_t scheduler; 1742 }; 1743 1744 struct pfioc_qstats_v1 { 1745 u_int32_t ticket; 1746 u_int32_t nr; 1747 void *buf; 1748 int nbytes; 1749 u_int8_t scheduler; 1750 /* 1751 * Placed here so code that only uses the above parameters can be 1752 * written entirely in terms of the v0 or v1 type. 1753 */ 1754 u_int32_t version; /* Requested version of stats struct */ 1755 }; 1756 1757 /* Latest version of struct pfioc_qstats_vX */ 1758 #define PFIOC_QSTATS_VERSION 1 1759 1760 struct pfioc_ruleset { 1761 u_int32_t nr; 1762 char path[MAXPATHLEN]; 1763 char name[PF_ANCHOR_NAME_SIZE]; 1764 }; 1765 1766 #define PF_RULESET_ALTQ (PF_RULESET_MAX) 1767 #define PF_RULESET_TABLE (PF_RULESET_MAX+1) 1768 #define PF_RULESET_ETH (PF_RULESET_MAX+2) 1769 struct pfioc_trans { 1770 int size; /* number of elements */ 1771 int esize; /* size of each element in bytes */ 1772 struct pfioc_trans_e { 1773 int rs_num; 1774 char anchor[MAXPATHLEN]; 1775 u_int32_t ticket; 1776 } *array; 1777 }; 1778 1779 #define PFR_FLAG_ATOMIC 0x00000001 /* unused */ 1780 #define PFR_FLAG_DUMMY 0x00000002 1781 #define PFR_FLAG_FEEDBACK 0x00000004 1782 #define PFR_FLAG_CLSTATS 0x00000008 1783 #define PFR_FLAG_ADDRSTOO 0x00000010 1784 #define PFR_FLAG_REPLACE 0x00000020 1785 #define PFR_FLAG_ALLRSETS 0x00000040 1786 #define PFR_FLAG_ALLMASK 0x0000007F 1787 #ifdef _KERNEL 1788 #define PFR_FLAG_USERIOCTL 0x10000000 1789 #endif 1790 1791 struct pfioc_table { 1792 struct pfr_table pfrio_table; 1793 void *pfrio_buffer; 1794 int pfrio_esize; 1795 int pfrio_size; 1796 int pfrio_size2; 1797 int pfrio_nadd; 1798 int pfrio_ndel; 1799 int pfrio_nchange; 1800 int pfrio_flags; 1801 u_int32_t pfrio_ticket; 1802 }; 1803 #define pfrio_exists pfrio_nadd 1804 #define pfrio_nzero pfrio_nadd 1805 #define pfrio_nmatch pfrio_nadd 1806 #define pfrio_naddr pfrio_size2 1807 #define pfrio_setflag pfrio_size2 1808 #define pfrio_clrflag pfrio_nadd 1809 1810 struct pfioc_iface { 1811 char pfiio_name[IFNAMSIZ]; 1812 void *pfiio_buffer; 1813 int pfiio_esize; 1814 int pfiio_size; 1815 int pfiio_nzero; 1816 int pfiio_flags; 1817 }; 1818 1819 /* 1820 * ioctl operations 1821 */ 1822 1823 #define DIOCSTART _IO ('D', 1) 1824 #define DIOCSTOP _IO ('D', 2) 1825 #define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule) 1826 #define DIOCADDRULENV _IOWR('D', 4, struct pfioc_nv) 1827 #define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule) 1828 #define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule) 1829 #define DIOCGETRULENV _IOWR('D', 7, struct pfioc_nv) 1830 /* XXX cut 8 - 17 */ 1831 #define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill) 1832 #define DIOCCLRSTATESNV _IOWR('D', 18, struct pfioc_nv) 1833 #define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state) 1834 #define DIOCGETSTATENV _IOWR('D', 19, struct pfioc_nv) 1835 #define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if) 1836 #define DIOCGETSTATUS _IOWR('D', 21, struct pf_status) 1837 #define DIOCGETSTATUSNV _IOWR('D', 21, struct pfioc_nv) 1838 #define DIOCCLRSTATUS _IO ('D', 22) 1839 #define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook) 1840 #define DIOCSETDEBUG _IOWR('D', 24, u_int32_t) 1841 #define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states) 1842 #define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule) 1843 /* XXX cut 26 - 28 */ 1844 #define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm) 1845 #define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm) 1846 #define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state) 1847 #define DIOCCLRRULECTRS _IO ('D', 38) 1848 #define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit) 1849 #define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit) 1850 #define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill) 1851 #define DIOCKILLSTATESNV _IOWR('D', 41, struct pfioc_nv) 1852 #define DIOCSTARTALTQ _IO ('D', 42) 1853 #define DIOCSTOPALTQ _IO ('D', 43) 1854 #define DIOCADDALTQV0 _IOWR('D', 45, struct pfioc_altq_v0) 1855 #define DIOCADDALTQV1 _IOWR('D', 45, struct pfioc_altq_v1) 1856 #define DIOCGETALTQSV0 _IOWR('D', 47, struct pfioc_altq_v0) 1857 #define DIOCGETALTQSV1 _IOWR('D', 47, struct pfioc_altq_v1) 1858 #define DIOCGETALTQV0 _IOWR('D', 48, struct pfioc_altq_v0) 1859 #define DIOCGETALTQV1 _IOWR('D', 48, struct pfioc_altq_v1) 1860 #define DIOCCHANGEALTQV0 _IOWR('D', 49, struct pfioc_altq_v0) 1861 #define DIOCCHANGEALTQV1 _IOWR('D', 49, struct pfioc_altq_v1) 1862 #define DIOCGETQSTATSV0 _IOWR('D', 50, struct pfioc_qstats_v0) 1863 #define DIOCGETQSTATSV1 _IOWR('D', 50, struct pfioc_qstats_v1) 1864 #define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr) 1865 #define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr) 1866 #define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr) 1867 #define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr) 1868 #define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr) 1869 /* XXX cut 55 - 57 */ 1870 #define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset) 1871 #define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset) 1872 #define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table) 1873 #define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table) 1874 #define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table) 1875 #define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table) 1876 #define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table) 1877 #define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table) 1878 #define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table) 1879 #define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table) 1880 #define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table) 1881 #define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table) 1882 #define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table) 1883 #define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table) 1884 #define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table) 1885 #define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table) 1886 #define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table) 1887 #define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table) 1888 #define DIOCOSFPFLUSH _IO('D', 78) 1889 #define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl) 1890 #define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl) 1891 #define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans) 1892 #define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans) 1893 #define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans) 1894 #define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes) 1895 #define DIOCCLRSRCNODES _IO('D', 85) 1896 #define DIOCSETHOSTID _IOWR('D', 86, u_int32_t) 1897 #define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface) 1898 #define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface) 1899 #define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface) 1900 #define DIOCKILLSRCNODES _IOWR('D', 91, struct pfioc_src_node_kill) 1901 #define DIOCGIFSPEEDV0 _IOWR('D', 92, struct pf_ifspeed_v0) 1902 #define DIOCGIFSPEEDV1 _IOWR('D', 92, struct pf_ifspeed_v1) 1903 #define DIOCGETSTATESV2 _IOWR('D', 93, struct pfioc_states_v2) 1904 #define DIOCGETSYNCOOKIES _IOWR('D', 94, struct pfioc_nv) 1905 #define DIOCSETSYNCOOKIES _IOWR('D', 95, struct pfioc_nv) 1906 #define DIOCKEEPCOUNTERS _IOWR('D', 96, struct pfioc_nv) 1907 #define DIOCKEEPCOUNTERS_FREEBSD13 _IOWR('D', 92, struct pfioc_nv) 1908 #define DIOCADDETHRULE _IOWR('D', 97, struct pfioc_nv) 1909 #define DIOCGETETHRULE _IOWR('D', 98, struct pfioc_nv) 1910 #define DIOCGETETHRULES _IOWR('D', 99, struct pfioc_nv) 1911 #define DIOCGETETHRULESETS _IOWR('D', 100, struct pfioc_nv) 1912 #define DIOCGETETHRULESET _IOWR('D', 101, struct pfioc_nv) 1913 #define DIOCSETREASS _IOWR('D', 102, u_int32_t) 1914 1915 struct pf_ifspeed_v0 { 1916 char ifname[IFNAMSIZ]; 1917 u_int32_t baudrate; 1918 }; 1919 1920 struct pf_ifspeed_v1 { 1921 char ifname[IFNAMSIZ]; 1922 u_int32_t baudrate32; 1923 /* layout identical to struct pf_ifspeed_v0 up to this point */ 1924 u_int64_t baudrate; 1925 }; 1926 1927 /* Latest version of struct pf_ifspeed_vX */ 1928 #define PF_IFSPEED_VERSION 1 1929 1930 /* 1931 * Compatibility and convenience macros 1932 */ 1933 #ifndef _KERNEL 1934 #ifdef PFIOC_USE_LATEST 1935 /* 1936 * Maintaining in-tree consumers of the ioctl interface is easier when that 1937 * code can be written in terms old names that refer to the latest interface 1938 * version as that reduces the required changes in the consumers to those 1939 * that are functionally necessary to accommodate a new interface version. 1940 */ 1941 #define pfioc_altq __CONCAT(pfioc_altq_v, PFIOC_ALTQ_VERSION) 1942 #define pfioc_qstats __CONCAT(pfioc_qstats_v, PFIOC_QSTATS_VERSION) 1943 #define pf_ifspeed __CONCAT(pf_ifspeed_v, PF_IFSPEED_VERSION) 1944 1945 #define DIOCADDALTQ __CONCAT(DIOCADDALTQV, PFIOC_ALTQ_VERSION) 1946 #define DIOCGETALTQS __CONCAT(DIOCGETALTQSV, PFIOC_ALTQ_VERSION) 1947 #define DIOCGETALTQ __CONCAT(DIOCGETALTQV, PFIOC_ALTQ_VERSION) 1948 #define DIOCCHANGEALTQ __CONCAT(DIOCCHANGEALTQV, PFIOC_ALTQ_VERSION) 1949 #define DIOCGETQSTATS __CONCAT(DIOCGETQSTATSV, PFIOC_QSTATS_VERSION) 1950 #define DIOCGIFSPEED __CONCAT(DIOCGIFSPEEDV, PF_IFSPEED_VERSION) 1951 #else 1952 /* 1953 * When building out-of-tree code that is written for the old interface, 1954 * such as may exist in ports for example, resolve the old struct tags and 1955 * ioctl command names to the v0 versions. 1956 */ 1957 #define pfioc_altq __CONCAT(pfioc_altq_v, 0) 1958 #define pfioc_qstats __CONCAT(pfioc_qstats_v, 0) 1959 #define pf_ifspeed __CONCAT(pf_ifspeed_v, 0) 1960 1961 #define DIOCADDALTQ __CONCAT(DIOCADDALTQV, 0) 1962 #define DIOCGETALTQS __CONCAT(DIOCGETALTQSV, 0) 1963 #define DIOCGETALTQ __CONCAT(DIOCGETALTQV, 0) 1964 #define DIOCCHANGEALTQ __CONCAT(DIOCCHANGEALTQV, 0) 1965 #define DIOCGETQSTATS __CONCAT(DIOCGETQSTATSV, 0) 1966 #define DIOCGIFSPEED __CONCAT(DIOCGIFSPEEDV, 0) 1967 #endif /* PFIOC_USE_LATEST */ 1968 #endif /* _KERNEL */ 1969 1970 #ifdef _KERNEL 1971 LIST_HEAD(pf_ksrc_node_list, pf_ksrc_node); 1972 struct pf_srchash { 1973 struct pf_ksrc_node_list nodes; 1974 struct mtx lock; 1975 }; 1976 1977 struct pf_keyhash { 1978 LIST_HEAD(, pf_state_key) keys; 1979 struct mtx lock; 1980 }; 1981 1982 struct pf_idhash { 1983 LIST_HEAD(, pf_kstate) states; 1984 struct mtx lock; 1985 }; 1986 1987 extern u_long pf_ioctl_maxcount; 1988 extern u_long pf_hashmask; 1989 extern u_long pf_srchashmask; 1990 #define PF_HASHSIZ (131072) 1991 #define PF_SRCHASHSIZ (PF_HASHSIZ/4) 1992 VNET_DECLARE(struct pf_keyhash *, pf_keyhash); 1993 VNET_DECLARE(struct pf_idhash *, pf_idhash); 1994 #define V_pf_keyhash VNET(pf_keyhash) 1995 #define V_pf_idhash VNET(pf_idhash) 1996 VNET_DECLARE(struct pf_srchash *, pf_srchash); 1997 #define V_pf_srchash VNET(pf_srchash) 1998 1999 #define PF_IDHASH(s) (be64toh((s)->id) % (pf_hashmask + 1)) 2000 2001 VNET_DECLARE(void *, pf_swi_cookie); 2002 #define V_pf_swi_cookie VNET(pf_swi_cookie) 2003 VNET_DECLARE(struct intr_event *, pf_swi_ie); 2004 #define V_pf_swi_ie VNET(pf_swi_ie) 2005 2006 VNET_DECLARE(struct unrhdr64, pf_stateid); 2007 #define V_pf_stateid VNET(pf_stateid) 2008 2009 TAILQ_HEAD(pf_altqqueue, pf_altq); 2010 VNET_DECLARE(struct pf_altqqueue, pf_altqs[4]); 2011 #define V_pf_altqs VNET(pf_altqs) 2012 VNET_DECLARE(struct pf_kpalist, pf_pabuf); 2013 #define V_pf_pabuf VNET(pf_pabuf) 2014 2015 VNET_DECLARE(u_int32_t, ticket_altqs_active); 2016 #define V_ticket_altqs_active VNET(ticket_altqs_active) 2017 VNET_DECLARE(u_int32_t, ticket_altqs_inactive); 2018 #define V_ticket_altqs_inactive VNET(ticket_altqs_inactive) 2019 VNET_DECLARE(int, altqs_inactive_open); 2020 #define V_altqs_inactive_open VNET(altqs_inactive_open) 2021 VNET_DECLARE(u_int32_t, ticket_pabuf); 2022 #define V_ticket_pabuf VNET(ticket_pabuf) 2023 VNET_DECLARE(struct pf_altqqueue *, pf_altqs_active); 2024 #define V_pf_altqs_active VNET(pf_altqs_active) 2025 VNET_DECLARE(struct pf_altqqueue *, pf_altq_ifs_active); 2026 #define V_pf_altq_ifs_active VNET(pf_altq_ifs_active) 2027 VNET_DECLARE(struct pf_altqqueue *, pf_altqs_inactive); 2028 #define V_pf_altqs_inactive VNET(pf_altqs_inactive) 2029 VNET_DECLARE(struct pf_altqqueue *, pf_altq_ifs_inactive); 2030 #define V_pf_altq_ifs_inactive VNET(pf_altq_ifs_inactive) 2031 2032 VNET_DECLARE(struct pf_krulequeue, pf_unlinked_rules); 2033 #define V_pf_unlinked_rules VNET(pf_unlinked_rules) 2034 2035 #ifdef PF_WANT_32_TO_64_COUNTER 2036 LIST_HEAD(allkiflist_head, pfi_kkif); 2037 VNET_DECLARE(struct allkiflist_head, pf_allkiflist); 2038 #define V_pf_allkiflist VNET(pf_allkiflist) 2039 VNET_DECLARE(size_t, pf_allkifcount); 2040 #define V_pf_allkifcount VNET(pf_allkifcount) 2041 VNET_DECLARE(struct pfi_kkif *, pf_kifmarker); 2042 #define V_pf_kifmarker VNET(pf_kifmarker) 2043 2044 LIST_HEAD(allrulelist_head, pf_krule); 2045 VNET_DECLARE(struct allrulelist_head, pf_allrulelist); 2046 #define V_pf_allrulelist VNET(pf_allrulelist) 2047 VNET_DECLARE(size_t, pf_allrulecount); 2048 #define V_pf_allrulecount VNET(pf_allrulecount) 2049 VNET_DECLARE(struct pf_krule *, pf_rulemarker); 2050 #define V_pf_rulemarker VNET(pf_rulemarker) 2051 #endif 2052 2053 void pf_initialize(void); 2054 void pf_mtag_initialize(void); 2055 void pf_mtag_cleanup(void); 2056 void pf_cleanup(void); 2057 2058 struct pf_mtag *pf_get_mtag(struct mbuf *); 2059 2060 extern void pf_calc_skip_steps(struct pf_krulequeue *); 2061 #ifdef ALTQ 2062 extern void pf_altq_ifnet_event(struct ifnet *, int); 2063 #endif 2064 VNET_DECLARE(uma_zone_t, pf_state_z); 2065 #define V_pf_state_z VNET(pf_state_z) 2066 VNET_DECLARE(uma_zone_t, pf_state_key_z); 2067 #define V_pf_state_key_z VNET(pf_state_key_z) 2068 VNET_DECLARE(uma_zone_t, pf_state_scrub_z); 2069 #define V_pf_state_scrub_z VNET(pf_state_scrub_z) 2070 2071 extern void pf_purge_thread(void *); 2072 extern void pf_unload_vnet_purge(void); 2073 extern void pf_intr(void *); 2074 extern void pf_purge_expired_src_nodes(void); 2075 2076 extern int pf_unlink_state(struct pf_kstate *); 2077 extern int pf_state_insert(struct pfi_kkif *, 2078 struct pfi_kkif *, 2079 struct pf_state_key *, 2080 struct pf_state_key *, 2081 struct pf_kstate *); 2082 extern struct pf_kstate *pf_alloc_state(int); 2083 extern void pf_free_state(struct pf_kstate *); 2084 2085 static __inline void 2086 pf_ref_state(struct pf_kstate *s) 2087 { 2088 2089 refcount_acquire(&s->refs); 2090 } 2091 2092 static __inline int 2093 pf_release_state(struct pf_kstate *s) 2094 { 2095 2096 if (refcount_release(&s->refs)) { 2097 pf_free_state(s); 2098 return (1); 2099 } else 2100 return (0); 2101 } 2102 2103 static __inline int 2104 pf_release_staten(struct pf_kstate *s, u_int n) 2105 { 2106 2107 if (refcount_releasen(&s->refs, n)) { 2108 pf_free_state(s); 2109 return (1); 2110 } else 2111 return (0); 2112 } 2113 2114 extern struct pf_kstate *pf_find_state_byid(uint64_t, uint32_t); 2115 extern struct pf_kstate *pf_find_state_all(struct pf_state_key_cmp *, 2116 u_int, int *); 2117 extern bool pf_find_state_all_exists(struct pf_state_key_cmp *, 2118 u_int); 2119 extern struct pf_ksrc_node *pf_find_src_node(struct pf_addr *, 2120 struct pf_krule *, sa_family_t, int); 2121 extern void pf_unlink_src_node(struct pf_ksrc_node *); 2122 extern u_int pf_free_src_nodes(struct pf_ksrc_node_list *); 2123 extern void pf_print_state(struct pf_kstate *); 2124 extern void pf_print_flags(u_int8_t); 2125 extern u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t, 2126 u_int8_t); 2127 extern u_int16_t pf_proto_cksum_fixup(struct mbuf *, u_int16_t, 2128 u_int16_t, u_int16_t, u_int8_t); 2129 2130 VNET_DECLARE(struct ifnet *, sync_ifp); 2131 #define V_sync_ifp VNET(sync_ifp); 2132 VNET_DECLARE(struct pf_krule, pf_default_rule); 2133 #define V_pf_default_rule VNET(pf_default_rule) 2134 extern void pf_addrcpy(struct pf_addr *, struct pf_addr *, 2135 u_int8_t); 2136 void pf_free_rule(struct pf_krule *); 2137 2138 int pf_test_eth(int, int, struct ifnet *, struct mbuf **, struct inpcb *); 2139 #ifdef INET 2140 int pf_test(int, int, struct ifnet *, struct mbuf **, struct inpcb *); 2141 int pf_normalize_ip(struct mbuf **, int, struct pfi_kkif *, u_short *, 2142 struct pf_pdesc *); 2143 #endif /* INET */ 2144 2145 #ifdef INET6 2146 int pf_test6(int, int, struct ifnet *, struct mbuf **, struct inpcb *); 2147 int pf_normalize_ip6(struct mbuf **, int, struct pfi_kkif *, u_short *, 2148 struct pf_pdesc *); 2149 void pf_poolmask(struct pf_addr *, struct pf_addr*, 2150 struct pf_addr *, struct pf_addr *, u_int8_t); 2151 void pf_addr_inc(struct pf_addr *, sa_family_t); 2152 int pf_refragment6(struct ifnet *, struct mbuf **, struct m_tag *, bool); 2153 #endif /* INET6 */ 2154 2155 u_int32_t pf_new_isn(struct pf_kstate *); 2156 void *pf_pull_hdr(struct mbuf *, int, void *, int, u_short *, u_short *, 2157 sa_family_t); 2158 void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t); 2159 void pf_change_proto_a(struct mbuf *, void *, u_int16_t *, u_int32_t, 2160 u_int8_t); 2161 void pf_change_tcp_a(struct mbuf *, void *, u_int16_t *, u_int32_t); 2162 void pf_patch_16_unaligned(struct mbuf *, u_int16_t *, void *, u_int16_t, 2163 bool, u_int8_t); 2164 void pf_patch_32_unaligned(struct mbuf *, u_int16_t *, void *, u_int32_t, 2165 bool, u_int8_t); 2166 void pf_send_deferred_syn(struct pf_kstate *); 2167 int pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *, 2168 struct pf_addr *, sa_family_t); 2169 int pf_match_addr_range(struct pf_addr *, struct pf_addr *, 2170 struct pf_addr *, sa_family_t); 2171 int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t); 2172 2173 void pf_normalize_init(void); 2174 void pf_normalize_cleanup(void); 2175 int pf_normalize_tcp(int, struct pfi_kkif *, struct mbuf *, int, int, void *, 2176 struct pf_pdesc *); 2177 void pf_normalize_tcp_cleanup(struct pf_kstate *); 2178 int pf_normalize_tcp_init(struct mbuf *, int, struct pf_pdesc *, 2179 struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *); 2180 int pf_normalize_tcp_stateful(struct mbuf *, int, struct pf_pdesc *, 2181 u_short *, struct tcphdr *, struct pf_kstate *, 2182 struct pf_state_peer *, struct pf_state_peer *, int *); 2183 u_int32_t 2184 pf_state_expires(const struct pf_kstate *); 2185 void pf_purge_expired_fragments(void); 2186 void pf_purge_fragments(uint32_t); 2187 int pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kkif *, 2188 int); 2189 int pf_socket_lookup(int, struct pf_pdesc *, struct mbuf *); 2190 struct pf_state_key *pf_alloc_state_key(int); 2191 void pfr_initialize(void); 2192 void pfr_cleanup(void); 2193 int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t); 2194 void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t, 2195 u_int64_t, int, int, int); 2196 int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, sa_family_t); 2197 void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *); 2198 struct pfr_ktable * 2199 pfr_attach_table(struct pf_kruleset *, char *); 2200 struct pfr_ktable * 2201 pfr_eth_attach_table(struct pf_keth_ruleset *, char *); 2202 void pfr_detach_table(struct pfr_ktable *); 2203 int pfr_clr_tables(struct pfr_table *, int *, int); 2204 int pfr_add_tables(struct pfr_table *, int, int *, int); 2205 int pfr_del_tables(struct pfr_table *, int, int *, int); 2206 int pfr_table_count(struct pfr_table *, int); 2207 int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int); 2208 int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int); 2209 int pfr_clr_tstats(struct pfr_table *, int, int *, int); 2210 int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int); 2211 int pfr_clr_addrs(struct pfr_table *, int *, int); 2212 int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *, long); 2213 int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 2214 int); 2215 int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 2216 int); 2217 int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 2218 int *, int *, int *, int, u_int32_t); 2219 int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int); 2220 int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int); 2221 int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *, 2222 int); 2223 int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 2224 int); 2225 int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int); 2226 int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int); 2227 int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int); 2228 int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *, 2229 int *, u_int32_t, int); 2230 2231 MALLOC_DECLARE(PFI_MTYPE); 2232 VNET_DECLARE(struct pfi_kkif *, pfi_all); 2233 #define V_pfi_all VNET(pfi_all) 2234 2235 void pfi_initialize(void); 2236 void pfi_initialize_vnet(void); 2237 void pfi_cleanup(void); 2238 void pfi_cleanup_vnet(void); 2239 void pfi_kkif_ref(struct pfi_kkif *); 2240 void pfi_kkif_unref(struct pfi_kkif *); 2241 struct pfi_kkif *pfi_kkif_find(const char *); 2242 struct pfi_kkif *pfi_kkif_attach(struct pfi_kkif *, const char *); 2243 int pfi_kkif_match(struct pfi_kkif *, struct pfi_kkif *); 2244 void pfi_kkif_purge(void); 2245 int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *, 2246 sa_family_t); 2247 int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t); 2248 void pfi_dynaddr_remove(struct pfi_dynaddr *); 2249 void pfi_dynaddr_copyout(struct pf_addr_wrap *); 2250 void pfi_update_status(const char *, struct pf_status *); 2251 void pfi_get_ifaces(const char *, struct pfi_kif *, int *); 2252 int pfi_set_flags(const char *, int); 2253 int pfi_clear_flags(const char *, int); 2254 2255 int pf_match_tag(struct mbuf *, struct pf_krule *, int *, int); 2256 int pf_tag_packet(struct mbuf *, struct pf_pdesc *, int); 2257 int pf_addr_cmp(struct pf_addr *, struct pf_addr *, 2258 sa_family_t); 2259 2260 u_int16_t pf_get_mss(struct mbuf *, int, u_int16_t, sa_family_t); 2261 u_int8_t pf_get_wscale(struct mbuf *, int, u_int16_t, sa_family_t); 2262 struct mbuf *pf_build_tcp(const struct pf_krule *, sa_family_t, 2263 const struct pf_addr *, const struct pf_addr *, 2264 u_int16_t, u_int16_t, u_int32_t, u_int32_t, 2265 u_int8_t, u_int16_t, u_int16_t, u_int8_t, int, 2266 u_int16_t, int); 2267 void pf_send_tcp(const struct pf_krule *, sa_family_t, 2268 const struct pf_addr *, const struct pf_addr *, 2269 u_int16_t, u_int16_t, u_int32_t, u_int32_t, 2270 u_int8_t, u_int16_t, u_int16_t, u_int8_t, int, 2271 u_int16_t, int); 2272 2273 void pf_syncookies_init(void); 2274 void pf_syncookies_cleanup(void); 2275 int pf_get_syncookies(struct pfioc_nv *); 2276 int pf_set_syncookies(struct pfioc_nv *); 2277 int pf_synflood_check(struct pf_pdesc *); 2278 void pf_syncookie_send(struct mbuf *m, int off, 2279 struct pf_pdesc *); 2280 bool pf_syncookie_check(struct pf_pdesc *); 2281 u_int8_t pf_syncookie_validate(struct pf_pdesc *); 2282 struct mbuf * pf_syncookie_recreate_syn(uint8_t, int, 2283 struct pf_pdesc *); 2284 2285 VNET_DECLARE(struct pf_kstatus, pf_status); 2286 #define V_pf_status VNET(pf_status) 2287 2288 struct pf_limit { 2289 uma_zone_t zone; 2290 u_int limit; 2291 }; 2292 VNET_DECLARE(struct pf_limit, pf_limits[PF_LIMIT_MAX]); 2293 #define V_pf_limits VNET(pf_limits) 2294 2295 #endif /* _KERNEL */ 2296 2297 #ifdef _KERNEL 2298 VNET_DECLARE(struct pf_kanchor_global, pf_anchors); 2299 #define V_pf_anchors VNET(pf_anchors) 2300 VNET_DECLARE(struct pf_kanchor, pf_main_anchor); 2301 #define V_pf_main_anchor VNET(pf_main_anchor) 2302 VNET_DECLARE(struct pf_keth_anchor_global, pf_keth_anchors); 2303 #define V_pf_keth_anchors VNET(pf_keth_anchors) 2304 #define pf_main_ruleset V_pf_main_anchor.ruleset 2305 2306 VNET_DECLARE(struct pf_keth_anchor, pf_main_keth_anchor); 2307 #define V_pf_main_keth_anchor VNET(pf_main_keth_anchor) 2308 VNET_DECLARE(struct pf_keth_ruleset*, pf_keth); 2309 #define V_pf_keth VNET(pf_keth) 2310 2311 void pf_init_kruleset(struct pf_kruleset *); 2312 void pf_init_keth(struct pf_keth_ruleset *); 2313 int pf_kanchor_setup(struct pf_krule *, 2314 const struct pf_kruleset *, const char *); 2315 int pf_kanchor_nvcopyout(const struct pf_kruleset *, 2316 const struct pf_krule *, nvlist_t *); 2317 int pf_kanchor_copyout(const struct pf_kruleset *, 2318 const struct pf_krule *, struct pfioc_rule *); 2319 void pf_kanchor_remove(struct pf_krule *); 2320 void pf_remove_if_empty_kruleset(struct pf_kruleset *); 2321 struct pf_kruleset *pf_find_kruleset(const char *); 2322 struct pf_kruleset *pf_find_or_create_kruleset(const char *); 2323 void pf_rs_initialize(void); 2324 2325 2326 struct pf_krule *pf_krule_alloc(void); 2327 2328 void pf_remove_if_empty_keth_ruleset( 2329 struct pf_keth_ruleset *); 2330 struct pf_keth_ruleset *pf_find_keth_ruleset(const char *); 2331 struct pf_keth_anchor *pf_find_keth_anchor(const char *); 2332 int pf_keth_anchor_setup(struct pf_keth_rule *, 2333 const struct pf_keth_ruleset *, const char *); 2334 int pf_keth_anchor_nvcopyout( 2335 const struct pf_keth_ruleset *, 2336 const struct pf_keth_rule *, nvlist_t *); 2337 struct pf_keth_ruleset *pf_find_or_create_keth_ruleset(const char *); 2338 void pf_keth_anchor_remove(struct pf_keth_rule *); 2339 2340 void pf_krule_free(struct pf_krule *); 2341 #endif 2342 2343 /* The fingerprint functions can be linked into userland programs (tcpdump) */ 2344 int pf_osfp_add(struct pf_osfp_ioctl *); 2345 #ifdef _KERNEL 2346 struct pf_osfp_enlist * 2347 pf_osfp_fingerprint(struct pf_pdesc *, struct mbuf *, int, 2348 const struct tcphdr *); 2349 #endif /* _KERNEL */ 2350 void pf_osfp_flush(void); 2351 int pf_osfp_get(struct pf_osfp_ioctl *); 2352 int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t); 2353 2354 #ifdef _KERNEL 2355 void pf_print_host(struct pf_addr *, u_int16_t, u_int8_t); 2356 2357 void pf_step_into_anchor(struct pf_kanchor_stackframe *, int *, 2358 struct pf_kruleset **, int, struct pf_krule **, 2359 struct pf_krule **, int *); 2360 int pf_step_out_of_anchor(struct pf_kanchor_stackframe *, int *, 2361 struct pf_kruleset **, int, struct pf_krule **, 2362 struct pf_krule **, int *); 2363 void pf_step_into_keth_anchor(struct pf_keth_anchor_stackframe *, 2364 int *, struct pf_keth_ruleset **, 2365 struct pf_keth_rule **, struct pf_keth_rule **, 2366 int *); 2367 int pf_step_out_of_keth_anchor(struct pf_keth_anchor_stackframe *, 2368 int *, struct pf_keth_ruleset **, 2369 struct pf_keth_rule **, struct pf_keth_rule **, 2370 int *); 2371 2372 int pf_map_addr(u_int8_t, struct pf_krule *, 2373 struct pf_addr *, struct pf_addr *, 2374 struct pf_addr *, struct pf_ksrc_node **); 2375 struct pf_krule *pf_get_translation(struct pf_pdesc *, struct mbuf *, 2376 int, int, struct pfi_kkif *, struct pf_ksrc_node **, 2377 struct pf_state_key **, struct pf_state_key **, 2378 struct pf_addr *, struct pf_addr *, 2379 uint16_t, uint16_t, struct pf_kanchor_stackframe *); 2380 2381 struct pf_state_key *pf_state_key_setup(struct pf_pdesc *, struct pf_addr *, 2382 struct pf_addr *, u_int16_t, u_int16_t); 2383 struct pf_state_key *pf_state_key_clone(struct pf_state_key *); 2384 2385 int pf_normalize_mss(struct mbuf *m, int off, 2386 struct pf_pdesc *pd, u_int16_t maxmss); 2387 u_int16_t pf_rule_to_scrub_flags(u_int32_t); 2388 #ifdef INET 2389 void pf_scrub_ip(struct mbuf **, uint32_t, uint8_t, uint8_t); 2390 #endif /* INET */ 2391 #ifdef INET6 2392 void pf_scrub_ip6(struct mbuf **, uint32_t, uint8_t, uint8_t); 2393 #endif /* INET6 */ 2394 2395 struct pfi_kkif *pf_kkif_create(int); 2396 void pf_kkif_free(struct pfi_kkif *); 2397 void pf_kkif_zero(struct pfi_kkif *); 2398 #endif /* _KERNEL */ 2399 2400 #endif /* _NET_PFVAR_H_ */ 2401