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); 313 314 SDT_PROVIDER_DECLARE(pf); 315 316 struct pfi_dynaddr { 317 TAILQ_ENTRY(pfi_dynaddr) entry; 318 struct pf_addr pfid_addr4; 319 struct pf_addr pfid_mask4; 320 struct pf_addr pfid_addr6; 321 struct pf_addr pfid_mask6; 322 struct pfr_ktable *pfid_kt; 323 struct pfi_kkif *pfid_kif; 324 int pfid_net; /* mask or 128 */ 325 int pfid_acnt4; /* address count IPv4 */ 326 int pfid_acnt6; /* address count IPv6 */ 327 sa_family_t pfid_af; /* rule af */ 328 u_int8_t pfid_iflags; /* PFI_AFLAG_* */ 329 }; 330 331 /* 332 * Address manipulation macros 333 */ 334 #define HTONL(x) (x) = htonl((__uint32_t)(x)) 335 #define HTONS(x) (x) = htons((__uint16_t)(x)) 336 #define NTOHL(x) (x) = ntohl((__uint32_t)(x)) 337 #define NTOHS(x) (x) = ntohs((__uint16_t)(x)) 338 339 #define PF_NAME "pf" 340 341 #define PF_HASHROW_ASSERT(h) mtx_assert(&(h)->lock, MA_OWNED) 342 #define PF_HASHROW_LOCK(h) mtx_lock(&(h)->lock) 343 #define PF_HASHROW_UNLOCK(h) mtx_unlock(&(h)->lock) 344 345 #ifdef INVARIANTS 346 #define PF_STATE_LOCK(s) \ 347 do { \ 348 struct pf_kstate *_s = (s); \ 349 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(_s)]; \ 350 MPASS(_s->lock == &_ih->lock); \ 351 mtx_lock(_s->lock); \ 352 } while (0) 353 #define PF_STATE_UNLOCK(s) \ 354 do { \ 355 struct pf_kstate *_s = (s); \ 356 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(_s)]; \ 357 MPASS(_s->lock == &_ih->lock); \ 358 mtx_unlock(_s->lock); \ 359 } while (0) 360 #else 361 #define PF_STATE_LOCK(s) mtx_lock(s->lock) 362 #define PF_STATE_UNLOCK(s) mtx_unlock(s->lock) 363 #endif 364 365 #ifdef INVARIANTS 366 #define PF_STATE_LOCK_ASSERT(s) \ 367 do { \ 368 struct pf_kstate *_s = (s); \ 369 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(_s)]; \ 370 MPASS(_s->lock == &_ih->lock); \ 371 PF_HASHROW_ASSERT(_ih); \ 372 } while (0) 373 #else /* !INVARIANTS */ 374 #define PF_STATE_LOCK_ASSERT(s) do {} while (0) 375 #endif /* INVARIANTS */ 376 377 extern struct mtx_padalign pf_unlnkdrules_mtx; 378 #define PF_UNLNKDRULES_LOCK() mtx_lock(&pf_unlnkdrules_mtx) 379 #define PF_UNLNKDRULES_UNLOCK() mtx_unlock(&pf_unlnkdrules_mtx) 380 #define PF_UNLNKDRULES_ASSERT() mtx_assert(&pf_unlnkdrules_mtx, MA_OWNED) 381 382 extern struct sx pf_config_lock; 383 #define PF_CONFIG_LOCK() sx_xlock(&pf_config_lock) 384 #define PF_CONFIG_UNLOCK() sx_xunlock(&pf_config_lock) 385 #define PF_CONFIG_ASSERT() sx_assert(&pf_config_lock, SA_XLOCKED) 386 387 extern struct rmlock pf_rules_lock; 388 #define PF_RULES_RLOCK_TRACKER struct rm_priotracker _pf_rules_tracker 389 #define PF_RULES_RLOCK() rm_rlock(&pf_rules_lock, &_pf_rules_tracker) 390 #define PF_RULES_RUNLOCK() rm_runlock(&pf_rules_lock, &_pf_rules_tracker) 391 #define PF_RULES_WLOCK() rm_wlock(&pf_rules_lock) 392 #define PF_RULES_WUNLOCK() rm_wunlock(&pf_rules_lock) 393 #define PF_RULES_WOWNED() rm_wowned(&pf_rules_lock) 394 #define PF_RULES_ASSERT() rm_assert(&pf_rules_lock, RA_LOCKED) 395 #define PF_RULES_RASSERT() rm_assert(&pf_rules_lock, RA_RLOCKED) 396 #define PF_RULES_WASSERT() rm_assert(&pf_rules_lock, RA_WLOCKED) 397 398 extern struct mtx_padalign pf_table_stats_lock; 399 #define PF_TABLE_STATS_LOCK() mtx_lock(&pf_table_stats_lock) 400 #define PF_TABLE_STATS_UNLOCK() mtx_unlock(&pf_table_stats_lock) 401 #define PF_TABLE_STATS_OWNED() mtx_owned(&pf_table_stats_lock) 402 #define PF_TABLE_STATS_ASSERT() mtx_assert(&pf_rules_lock, MA_OWNED) 403 404 extern struct sx pf_end_lock; 405 406 #define PF_MODVER 1 407 #define PFLOG_MODVER 1 408 #define PFSYNC_MODVER 1 409 410 #define PFLOG_MINVER 1 411 #define PFLOG_PREFVER PFLOG_MODVER 412 #define PFLOG_MAXVER 1 413 #define PFSYNC_MINVER 1 414 #define PFSYNC_PREFVER PFSYNC_MODVER 415 #define PFSYNC_MAXVER 1 416 417 #ifdef INET 418 #ifndef INET6 419 #define PF_INET_ONLY 420 #endif /* ! INET6 */ 421 #endif /* INET */ 422 423 #ifdef INET6 424 #ifndef INET 425 #define PF_INET6_ONLY 426 #endif /* ! INET */ 427 #endif /* INET6 */ 428 429 #ifdef INET 430 #ifdef INET6 431 #define PF_INET_INET6 432 #endif /* INET6 */ 433 #endif /* INET */ 434 435 #else 436 437 #define PF_INET_INET6 438 439 #endif /* _KERNEL */ 440 441 /* Both IPv4 and IPv6 */ 442 #ifdef PF_INET_INET6 443 444 #define PF_AEQ(a, b, c) \ 445 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \ 446 (c == AF_INET6 && (a)->addr32[3] == (b)->addr32[3] && \ 447 (a)->addr32[2] == (b)->addr32[2] && \ 448 (a)->addr32[1] == (b)->addr32[1] && \ 449 (a)->addr32[0] == (b)->addr32[0])) \ 450 451 #define PF_ANEQ(a, b, c) \ 452 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \ 453 (c == AF_INET6 && ((a)->addr32[0] != (b)->addr32[0] || \ 454 (a)->addr32[1] != (b)->addr32[1] || \ 455 (a)->addr32[2] != (b)->addr32[2] || \ 456 (a)->addr32[3] != (b)->addr32[3]))) \ 457 458 #define PF_AZERO(a, c) \ 459 ((c == AF_INET && !(a)->addr32[0]) || \ 460 (c == AF_INET6 && !(a)->addr32[0] && !(a)->addr32[1] && \ 461 !(a)->addr32[2] && !(a)->addr32[3] )) \ 462 463 #define PF_MATCHA(n, a, m, b, f) \ 464 pf_match_addr(n, a, m, b, f) 465 466 #define PF_ACPY(a, b, f) \ 467 pf_addrcpy(a, b, f) 468 469 #define PF_AINC(a, f) \ 470 pf_addr_inc(a, f) 471 472 #define PF_POOLMASK(a, b, c, d, f) \ 473 pf_poolmask(a, b, c, d, f) 474 475 #else 476 477 /* Just IPv6 */ 478 479 #ifdef PF_INET6_ONLY 480 481 #define PF_AEQ(a, b, c) \ 482 ((a)->addr32[3] == (b)->addr32[3] && \ 483 (a)->addr32[2] == (b)->addr32[2] && \ 484 (a)->addr32[1] == (b)->addr32[1] && \ 485 (a)->addr32[0] == (b)->addr32[0]) \ 486 487 #define PF_ANEQ(a, b, c) \ 488 ((a)->addr32[3] != (b)->addr32[3] || \ 489 (a)->addr32[2] != (b)->addr32[2] || \ 490 (a)->addr32[1] != (b)->addr32[1] || \ 491 (a)->addr32[0] != (b)->addr32[0]) \ 492 493 #define PF_AZERO(a, c) \ 494 (!(a)->addr32[0] && \ 495 !(a)->addr32[1] && \ 496 !(a)->addr32[2] && \ 497 !(a)->addr32[3] ) \ 498 499 #define PF_MATCHA(n, a, m, b, f) \ 500 pf_match_addr(n, a, m, b, f) 501 502 #define PF_ACPY(a, b, f) \ 503 pf_addrcpy(a, b, f) 504 505 #define PF_AINC(a, f) \ 506 pf_addr_inc(a, f) 507 508 #define PF_POOLMASK(a, b, c, d, f) \ 509 pf_poolmask(a, b, c, d, f) 510 511 #else 512 513 /* Just IPv4 */ 514 #ifdef PF_INET_ONLY 515 516 #define PF_AEQ(a, b, c) \ 517 ((a)->addr32[0] == (b)->addr32[0]) 518 519 #define PF_ANEQ(a, b, c) \ 520 ((a)->addr32[0] != (b)->addr32[0]) 521 522 #define PF_AZERO(a, c) \ 523 (!(a)->addr32[0]) 524 525 #define PF_MATCHA(n, a, m, b, f) \ 526 pf_match_addr(n, a, m, b, f) 527 528 #define PF_ACPY(a, b, f) \ 529 (a)->v4.s_addr = (b)->v4.s_addr 530 531 #define PF_AINC(a, f) \ 532 do { \ 533 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \ 534 } while (0) 535 536 #define PF_POOLMASK(a, b, c, d, f) \ 537 do { \ 538 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \ 539 (((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \ 540 } while (0) 541 542 #endif /* PF_INET_ONLY */ 543 #endif /* PF_INET6_ONLY */ 544 #endif /* PF_INET_INET6 */ 545 546 /* 547 * XXX callers not FIB-aware in our version of pf yet. 548 * OpenBSD fixed it later it seems, 2010/05/07 13:33:16 claudio. 549 */ 550 #define PF_MISMATCHAW(aw, x, af, neg, ifp, rtid) \ 551 ( \ 552 (((aw)->type == PF_ADDR_NOROUTE && \ 553 pf_routable((x), (af), NULL, (rtid))) || \ 554 (((aw)->type == PF_ADDR_URPFFAILED && (ifp) != NULL && \ 555 pf_routable((x), (af), (ifp), (rtid))) || \ 556 ((aw)->type == PF_ADDR_TABLE && \ 557 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \ 558 ((aw)->type == PF_ADDR_DYNIFTL && \ 559 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \ 560 ((aw)->type == PF_ADDR_RANGE && \ 561 !pf_match_addr_range(&(aw)->v.a.addr, \ 562 &(aw)->v.a.mask, (x), (af))) || \ 563 ((aw)->type == PF_ADDR_ADDRMASK && \ 564 !PF_AZERO(&(aw)->v.a.mask, (af)) && \ 565 !PF_MATCHA(0, &(aw)->v.a.addr, \ 566 &(aw)->v.a.mask, (x), (af))))) != \ 567 (neg) \ 568 ) 569 570 #define PF_ALGNMNT(off) (((off) % 2) == 0) 571 572 #ifdef _KERNEL 573 574 struct pf_kpooladdr { 575 struct pf_addr_wrap addr; 576 TAILQ_ENTRY(pf_kpooladdr) entries; 577 char ifname[IFNAMSIZ]; 578 struct pfi_kkif *kif; 579 }; 580 581 TAILQ_HEAD(pf_kpalist, pf_kpooladdr); 582 583 struct pf_kpool { 584 struct mtx mtx; 585 struct pf_kpalist list; 586 struct pf_kpooladdr *cur; 587 struct pf_poolhashkey key; 588 struct pf_addr counter; 589 struct pf_mape_portset mape; 590 int tblidx; 591 u_int16_t proxy_port[2]; 592 u_int8_t opts; 593 }; 594 595 struct pf_rule_actions { 596 uint16_t qid; 597 uint16_t pqid; 598 uint16_t dnpipe; 599 uint16_t dnrpipe; /* Reverse direction pipe */ 600 uint32_t flags; 601 }; 602 603 union pf_keth_rule_ptr { 604 struct pf_keth_rule *ptr; 605 uint32_t nr; 606 }; 607 608 struct pf_keth_rule_addr { 609 uint8_t addr[ETHER_ADDR_LEN]; 610 uint8_t mask[ETHER_ADDR_LEN]; 611 bool neg; 612 uint8_t isset; 613 }; 614 615 struct pf_keth_anchor; 616 617 TAILQ_HEAD(pf_keth_ruleq, pf_keth_rule); 618 619 struct pf_keth_ruleset { 620 struct pf_keth_ruleq rules[2]; 621 struct pf_keth_rules { 622 struct pf_keth_ruleq *rules; 623 int open; 624 uint32_t ticket; 625 } active, inactive; 626 struct epoch_context epoch_ctx; 627 struct vnet *vnet; 628 struct pf_keth_anchor *anchor; 629 }; 630 631 RB_HEAD(pf_keth_anchor_global, pf_keth_anchor); 632 RB_HEAD(pf_keth_anchor_node, pf_keth_anchor); 633 struct pf_keth_anchor { 634 RB_ENTRY(pf_keth_anchor) entry_node; 635 RB_ENTRY(pf_keth_anchor) entry_global; 636 struct pf_keth_anchor *parent; 637 struct pf_keth_anchor_node children; 638 char name[PF_ANCHOR_NAME_SIZE]; 639 char path[MAXPATHLEN]; 640 struct pf_keth_ruleset ruleset; 641 int refcnt; /* anchor rules */ 642 uint8_t anchor_relative; 643 uint8_t anchor_wildcard; 644 }; 645 RB_PROTOTYPE(pf_keth_anchor_node, pf_keth_anchor, entry_node, 646 pf_keth_anchor_compare); 647 RB_PROTOTYPE(pf_keth_anchor_global, pf_keth_anchor, entry_global, 648 pf_keth_anchor_compare); 649 650 struct pf_keth_rule { 651 #define PFE_SKIP_IFP 0 652 #define PFE_SKIP_DIR 1 653 #define PFE_SKIP_PROTO 2 654 #define PFE_SKIP_SRC_ADDR 3 655 #define PFE_SKIP_DST_ADDR 4 656 #define PFE_SKIP_COUNT 5 657 union pf_keth_rule_ptr skip[PFE_SKIP_COUNT]; 658 659 TAILQ_ENTRY(pf_keth_rule) entries; 660 661 struct pf_keth_anchor *anchor; 662 u_int8_t anchor_relative; 663 u_int8_t anchor_wildcard; 664 665 uint32_t nr; 666 667 bool quick; 668 669 /* Filter */ 670 char ifname[IFNAMSIZ]; 671 struct pfi_kkif *kif; 672 bool ifnot; 673 uint8_t direction; 674 uint16_t proto; 675 struct pf_keth_rule_addr src, dst; 676 struct pf_rule_addr ipsrc, ipdst; 677 char match_tagname[PF_TAG_NAME_SIZE]; 678 uint16_t match_tag; 679 bool match_tag_not; 680 681 682 /* Stats */ 683 counter_u64_t evaluations; 684 counter_u64_t packets[2]; 685 counter_u64_t bytes[2]; 686 time_t *timestamp; 687 688 /* Action */ 689 char qname[PF_QNAME_SIZE]; 690 int qid; 691 char tagname[PF_TAG_NAME_SIZE]; 692 uint16_t tag; 693 char bridge_to_name[IFNAMSIZ]; 694 struct pfi_kkif *bridge_to; 695 uint8_t action; 696 uint16_t dnpipe; 697 uint32_t dnflags; 698 }; 699 700 union pf_krule_ptr { 701 struct pf_krule *ptr; 702 u_int32_t nr; 703 }; 704 705 RB_HEAD(pf_krule_global, pf_krule); 706 RB_PROTOTYPE(pf_krule_global, pf_krule, entry_global, pf_krule_compare); 707 708 struct pf_krule { 709 struct pf_rule_addr src; 710 struct pf_rule_addr dst; 711 union pf_krule_ptr skip[PF_SKIP_COUNT]; 712 char label[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE]; 713 uint32_t ridentifier; 714 char ifname[IFNAMSIZ]; 715 char qname[PF_QNAME_SIZE]; 716 char pqname[PF_QNAME_SIZE]; 717 char tagname[PF_TAG_NAME_SIZE]; 718 char match_tagname[PF_TAG_NAME_SIZE]; 719 720 char overload_tblname[PF_TABLE_NAME_SIZE]; 721 722 TAILQ_ENTRY(pf_krule) entries; 723 struct pf_kpool rpool; 724 725 struct pf_counter_u64 evaluations; 726 struct pf_counter_u64 packets[2]; 727 struct pf_counter_u64 bytes[2]; 728 time_t *timestamp; 729 730 struct pfi_kkif *kif; 731 struct pf_kanchor *anchor; 732 struct pfr_ktable *overload_tbl; 733 734 pf_osfp_t os_fingerprint; 735 736 int rtableid; 737 u_int32_t timeout[PFTM_MAX]; 738 u_int32_t max_states; 739 u_int32_t max_src_nodes; 740 u_int32_t max_src_states; 741 u_int32_t max_src_conn; 742 struct { 743 u_int32_t limit; 744 u_int32_t seconds; 745 } max_src_conn_rate; 746 u_int16_t qid; 747 u_int16_t pqid; 748 u_int16_t dnpipe; 749 u_int16_t dnrpipe; 750 u_int32_t free_flags; 751 u_int32_t nr; 752 u_int32_t prob; 753 uid_t cuid; 754 pid_t cpid; 755 756 counter_u64_t states_cur; 757 counter_u64_t states_tot; 758 counter_u64_t src_nodes; 759 760 u_int16_t return_icmp; 761 u_int16_t return_icmp6; 762 u_int16_t max_mss; 763 u_int16_t tag; 764 u_int16_t match_tag; 765 u_int16_t scrub_flags; 766 767 struct pf_rule_uid uid; 768 struct pf_rule_gid gid; 769 770 u_int32_t rule_flag; 771 uint32_t rule_ref; 772 u_int8_t action; 773 u_int8_t direction; 774 u_int8_t log; 775 u_int8_t logif; 776 u_int8_t quick; 777 u_int8_t ifnot; 778 u_int8_t match_tag_not; 779 u_int8_t natpass; 780 781 u_int8_t keep_state; 782 sa_family_t af; 783 u_int8_t proto; 784 u_int8_t type; 785 u_int8_t code; 786 u_int8_t flags; 787 u_int8_t flagset; 788 u_int8_t min_ttl; 789 u_int8_t allow_opts; 790 u_int8_t rt; 791 u_int8_t return_ttl; 792 u_int8_t tos; 793 u_int8_t set_tos; 794 u_int8_t anchor_relative; 795 u_int8_t anchor_wildcard; 796 797 u_int8_t flush; 798 u_int8_t prio; 799 u_int8_t set_prio[2]; 800 801 struct { 802 struct pf_addr addr; 803 u_int16_t port; 804 } divert; 805 u_int8_t md5sum[PF_MD5_DIGEST_LENGTH]; 806 RB_ENTRY(pf_krule) entry_global; 807 808 #ifdef PF_WANT_32_TO_64_COUNTER 809 LIST_ENTRY(pf_krule) allrulelist; 810 bool allrulelinked; 811 #endif 812 }; 813 814 struct pf_ksrc_node { 815 LIST_ENTRY(pf_ksrc_node) entry; 816 struct pf_addr addr; 817 struct pf_addr raddr; 818 union pf_krule_ptr rule; 819 struct pfi_kkif *kif; 820 counter_u64_t bytes[2]; 821 counter_u64_t packets[2]; 822 u_int32_t states; 823 u_int32_t conn; 824 struct pf_threshold conn_rate; 825 u_int32_t creation; 826 u_int32_t expire; 827 sa_family_t af; 828 u_int8_t ruletype; 829 }; 830 #endif 831 832 struct pf_state_scrub { 833 struct timeval pfss_last; /* time received last packet */ 834 u_int32_t pfss_tsecr; /* last echoed timestamp */ 835 u_int32_t pfss_tsval; /* largest timestamp */ 836 u_int32_t pfss_tsval0; /* original timestamp */ 837 u_int16_t pfss_flags; 838 #define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */ 839 #define PFSS_PAWS 0x0010 /* stricter PAWS checks */ 840 #define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */ 841 #define PFSS_DATA_TS 0x0040 /* timestamp on data packets */ 842 #define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */ 843 u_int8_t pfss_ttl; /* stashed TTL */ 844 u_int8_t pad; 845 u_int32_t pfss_ts_mod; /* timestamp modulation */ 846 }; 847 848 struct pf_state_host { 849 struct pf_addr addr; 850 u_int16_t port; 851 u_int16_t pad; 852 }; 853 854 struct pf_state_peer { 855 struct pf_state_scrub *scrub; /* state is scrubbed */ 856 u_int32_t seqlo; /* Max sequence number sent */ 857 u_int32_t seqhi; /* Max the other end ACKd + win */ 858 u_int32_t seqdiff; /* Sequence number modulator */ 859 u_int16_t max_win; /* largest window (pre scaling) */ 860 u_int16_t mss; /* Maximum segment size option */ 861 u_int8_t state; /* active state level */ 862 u_int8_t wscale; /* window scaling factor */ 863 u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */ 864 u_int8_t pad[1]; 865 }; 866 867 /* Keep synced with struct pf_state_key. */ 868 struct pf_state_key_cmp { 869 struct pf_addr addr[2]; 870 u_int16_t port[2]; 871 sa_family_t af; 872 u_int8_t proto; 873 u_int8_t pad[2]; 874 }; 875 876 struct pf_state_key { 877 struct pf_addr addr[2]; 878 u_int16_t port[2]; 879 sa_family_t af; 880 u_int8_t proto; 881 u_int8_t pad[2]; 882 883 LIST_ENTRY(pf_state_key) entry; 884 TAILQ_HEAD(, pf_kstate) states[2]; 885 }; 886 887 /* Keep synced with struct pf_kstate. */ 888 struct pf_state_cmp { 889 u_int64_t id; 890 u_int32_t creatorid; 891 u_int8_t direction; 892 u_int8_t pad[3]; 893 }; 894 895 #define PFSTATE_ALLOWOPTS 0x01 896 #define PFSTATE_SLOPPY 0x02 897 /* was PFSTATE_PFLOW 0x04 */ 898 #define PFSTATE_NOSYNC 0x08 899 #define PFSTATE_ACK 0x10 900 #define PFRULE_DN_IS_PIPE 0x40 901 #define PFRULE_DN_IS_QUEUE 0x80 902 #define PFSTATE_SETPRIO 0x0200 903 #define PFSTATE_SETMASK (PFSTATE_SETPRIO) 904 905 struct pf_state_scrub_export { 906 uint16_t pfss_flags; 907 uint8_t pfss_ttl; /* stashed TTL */ 908 #define PF_SCRUB_FLAG_VALID 0x01 909 uint8_t scrub_flag; 910 uint32_t pfss_ts_mod; /* timestamp modulation */ 911 }; 912 913 struct pf_state_key_export { 914 struct pf_addr addr[2]; 915 uint16_t port[2]; 916 }; 917 918 struct pf_state_peer_export { 919 struct pf_state_scrub_export scrub; /* state is scrubbed */ 920 uint32_t seqlo; /* Max sequence number sent */ 921 uint32_t seqhi; /* Max the other end ACKd + win */ 922 uint32_t seqdiff; /* Sequence number modulator */ 923 uint16_t max_win; /* largest window (pre scaling) */ 924 uint16_t mss; /* Maximum segment size option */ 925 uint8_t state; /* active state level */ 926 uint8_t wscale; /* window scaling factor */ 927 uint8_t dummy[6]; 928 }; 929 _Static_assert(sizeof(struct pf_state_peer_export) == 32, "size incorrect"); 930 931 struct pf_state_export { 932 uint64_t version; 933 #define PF_STATE_VERSION 20210706 934 uint64_t id; 935 char ifname[IFNAMSIZ]; 936 char orig_ifname[IFNAMSIZ]; 937 struct pf_state_key_export key[2]; 938 struct pf_state_peer_export src; 939 struct pf_state_peer_export dst; 940 struct pf_addr rt_addr; 941 uint32_t rule; 942 uint32_t anchor; 943 uint32_t nat_rule; 944 uint32_t creation; 945 uint32_t expire; 946 uint32_t spare0; 947 uint64_t packets[2]; 948 uint64_t bytes[2]; 949 uint32_t creatorid; 950 uint32_t spare1; 951 sa_family_t af; 952 uint8_t proto; 953 uint8_t direction; 954 uint8_t log; 955 uint8_t state_flags; 956 uint8_t timeout; 957 uint8_t sync_flags; 958 uint8_t updates; 959 960 uint8_t spare[112]; 961 }; 962 _Static_assert(sizeof(struct pf_state_export) == 384, "size incorrect"); 963 964 #ifdef _KERNEL 965 struct pf_kstate { 966 /* 967 * Area shared with pf_state_cmp 968 */ 969 u_int64_t id; 970 u_int32_t creatorid; 971 u_int8_t direction; 972 u_int8_t pad[3]; 973 /* 974 * end of the area 975 */ 976 977 u_int8_t state_flags; 978 u_int8_t timeout; 979 u_int8_t sync_state; /* PFSYNC_S_x */ 980 u_int8_t sync_updates; /* XXX */ 981 u_int refs; 982 struct mtx *lock; 983 TAILQ_ENTRY(pf_kstate) sync_list; 984 TAILQ_ENTRY(pf_kstate) key_list[2]; 985 LIST_ENTRY(pf_kstate) entry; 986 struct pf_state_peer src; 987 struct pf_state_peer dst; 988 union pf_krule_ptr rule; 989 union pf_krule_ptr anchor; 990 union pf_krule_ptr nat_rule; 991 struct pf_addr rt_addr; 992 struct pf_state_key *key[2]; /* addresses stack and wire */ 993 struct pfi_kkif *kif; 994 struct pfi_kkif *orig_kif; /* The real kif, even if we're a floating state (i.e. if == V_pfi_all). */ 995 struct pfi_kkif *rt_kif; 996 struct pf_ksrc_node *src_node; 997 struct pf_ksrc_node *nat_src_node; 998 u_int64_t packets[2]; 999 u_int64_t bytes[2]; 1000 u_int32_t creation; 1001 u_int32_t expire; 1002 u_int32_t pfsync_time; 1003 u_int16_t qid; 1004 u_int16_t pqid; 1005 u_int16_t dnpipe; 1006 u_int16_t dnrpipe; 1007 u_int16_t tag; 1008 u_int8_t log; 1009 }; 1010 1011 /* 1012 * Size <= fits 13 objects per page on LP64. Try to not grow the struct beyond that. 1013 */ 1014 _Static_assert(sizeof(struct pf_kstate) <= 312, "pf_kstate size crosses 312 bytes"); 1015 #endif 1016 1017 /* 1018 * Unified state structures for pulling states out of the kernel 1019 * used by pfsync(4) and the pf(4) ioctl. 1020 */ 1021 struct pfsync_state_scrub { 1022 u_int16_t pfss_flags; 1023 u_int8_t pfss_ttl; /* stashed TTL */ 1024 #define PFSYNC_SCRUB_FLAG_VALID 0x01 1025 u_int8_t scrub_flag; 1026 u_int32_t pfss_ts_mod; /* timestamp modulation */ 1027 } __packed; 1028 1029 struct pfsync_state_peer { 1030 struct pfsync_state_scrub scrub; /* state is scrubbed */ 1031 u_int32_t seqlo; /* Max sequence number sent */ 1032 u_int32_t seqhi; /* Max the other end ACKd + win */ 1033 u_int32_t seqdiff; /* Sequence number modulator */ 1034 u_int16_t max_win; /* largest window (pre scaling) */ 1035 u_int16_t mss; /* Maximum segment size option */ 1036 u_int8_t state; /* active state level */ 1037 u_int8_t wscale; /* window scaling factor */ 1038 u_int8_t pad[6]; 1039 } __packed; 1040 1041 struct pfsync_state_key { 1042 struct pf_addr addr[2]; 1043 u_int16_t port[2]; 1044 }; 1045 1046 struct pfsync_state { 1047 u_int64_t id; 1048 char ifname[IFNAMSIZ]; 1049 struct pfsync_state_key key[2]; 1050 struct pfsync_state_peer src; 1051 struct pfsync_state_peer dst; 1052 struct pf_addr rt_addr; 1053 u_int32_t rule; 1054 u_int32_t anchor; 1055 u_int32_t nat_rule; 1056 u_int32_t creation; 1057 u_int32_t expire; 1058 u_int32_t packets[2][2]; 1059 u_int32_t bytes[2][2]; 1060 u_int32_t creatorid; 1061 sa_family_t af; 1062 u_int8_t proto; 1063 u_int8_t direction; 1064 u_int8_t __spare[2]; 1065 u_int8_t log; 1066 u_int8_t state_flags; 1067 u_int8_t timeout; 1068 u_int8_t sync_flags; 1069 u_int8_t updates; 1070 } __packed; 1071 1072 #ifdef _KERNEL 1073 /* pfsync */ 1074 typedef int pfsync_state_import_t(struct pfsync_state *, int); 1075 typedef void pfsync_insert_state_t(struct pf_kstate *); 1076 typedef void pfsync_update_state_t(struct pf_kstate *); 1077 typedef void pfsync_delete_state_t(struct pf_kstate *); 1078 typedef void pfsync_clear_states_t(u_int32_t, const char *); 1079 typedef int pfsync_defer_t(struct pf_kstate *, struct mbuf *); 1080 typedef void pfsync_detach_ifnet_t(struct ifnet *); 1081 1082 VNET_DECLARE(pfsync_state_import_t *, pfsync_state_import_ptr); 1083 #define V_pfsync_state_import_ptr VNET(pfsync_state_import_ptr) 1084 VNET_DECLARE(pfsync_insert_state_t *, pfsync_insert_state_ptr); 1085 #define V_pfsync_insert_state_ptr VNET(pfsync_insert_state_ptr) 1086 VNET_DECLARE(pfsync_update_state_t *, pfsync_update_state_ptr); 1087 #define V_pfsync_update_state_ptr VNET(pfsync_update_state_ptr) 1088 VNET_DECLARE(pfsync_delete_state_t *, pfsync_delete_state_ptr); 1089 #define V_pfsync_delete_state_ptr VNET(pfsync_delete_state_ptr) 1090 VNET_DECLARE(pfsync_clear_states_t *, pfsync_clear_states_ptr); 1091 #define V_pfsync_clear_states_ptr VNET(pfsync_clear_states_ptr) 1092 VNET_DECLARE(pfsync_defer_t *, pfsync_defer_ptr); 1093 #define V_pfsync_defer_ptr VNET(pfsync_defer_ptr) 1094 extern pfsync_detach_ifnet_t *pfsync_detach_ifnet_ptr; 1095 1096 void pfsync_state_export(struct pfsync_state *, 1097 struct pf_kstate *); 1098 void pf_state_export(struct pf_state_export *, 1099 struct pf_kstate *); 1100 1101 /* pflog */ 1102 struct pf_kruleset; 1103 struct pf_pdesc; 1104 typedef int pflog_packet_t(struct pfi_kkif *, struct mbuf *, sa_family_t, 1105 u_int8_t, u_int8_t, struct pf_krule *, struct pf_krule *, 1106 struct pf_kruleset *, struct pf_pdesc *, int); 1107 extern pflog_packet_t *pflog_packet_ptr; 1108 1109 #endif /* _KERNEL */ 1110 1111 #define PFSYNC_FLAG_SRCNODE 0x04 1112 #define PFSYNC_FLAG_NATSRCNODE 0x08 1113 1114 /* for copies to/from network byte order */ 1115 /* ioctl interface also uses network byte order */ 1116 #define pf_state_peer_hton(s,d) do { \ 1117 (d)->seqlo = htonl((s)->seqlo); \ 1118 (d)->seqhi = htonl((s)->seqhi); \ 1119 (d)->seqdiff = htonl((s)->seqdiff); \ 1120 (d)->max_win = htons((s)->max_win); \ 1121 (d)->mss = htons((s)->mss); \ 1122 (d)->state = (s)->state; \ 1123 (d)->wscale = (s)->wscale; \ 1124 if ((s)->scrub) { \ 1125 (d)->scrub.pfss_flags = \ 1126 htons((s)->scrub->pfss_flags & PFSS_TIMESTAMP); \ 1127 (d)->scrub.pfss_ttl = (s)->scrub->pfss_ttl; \ 1128 (d)->scrub.pfss_ts_mod = htonl((s)->scrub->pfss_ts_mod);\ 1129 (d)->scrub.scrub_flag = PFSYNC_SCRUB_FLAG_VALID; \ 1130 } \ 1131 } while (0) 1132 1133 #define pf_state_peer_ntoh(s,d) do { \ 1134 (d)->seqlo = ntohl((s)->seqlo); \ 1135 (d)->seqhi = ntohl((s)->seqhi); \ 1136 (d)->seqdiff = ntohl((s)->seqdiff); \ 1137 (d)->max_win = ntohs((s)->max_win); \ 1138 (d)->mss = ntohs((s)->mss); \ 1139 (d)->state = (s)->state; \ 1140 (d)->wscale = (s)->wscale; \ 1141 if ((s)->scrub.scrub_flag == PFSYNC_SCRUB_FLAG_VALID && \ 1142 (d)->scrub != NULL) { \ 1143 (d)->scrub->pfss_flags = \ 1144 ntohs((s)->scrub.pfss_flags) & PFSS_TIMESTAMP; \ 1145 (d)->scrub->pfss_ttl = (s)->scrub.pfss_ttl; \ 1146 (d)->scrub->pfss_ts_mod = ntohl((s)->scrub.pfss_ts_mod);\ 1147 } \ 1148 } while (0) 1149 1150 #define pf_state_counter_hton(s,d) do { \ 1151 d[0] = htonl((s>>32)&0xffffffff); \ 1152 d[1] = htonl(s&0xffffffff); \ 1153 } while (0) 1154 1155 #define pf_state_counter_from_pfsync(s) \ 1156 (((u_int64_t)(s[0])<<32) | (u_int64_t)(s[1])) 1157 1158 #define pf_state_counter_ntoh(s,d) do { \ 1159 d = ntohl(s[0]); \ 1160 d = d<<32; \ 1161 d += ntohl(s[1]); \ 1162 } while (0) 1163 1164 TAILQ_HEAD(pf_krulequeue, pf_krule); 1165 1166 struct pf_kanchor; 1167 1168 struct pf_kruleset { 1169 struct { 1170 struct pf_krulequeue queues[2]; 1171 struct { 1172 struct pf_krulequeue *ptr; 1173 struct pf_krule **ptr_array; 1174 u_int32_t rcount; 1175 u_int32_t ticket; 1176 int open; 1177 struct pf_krule_global *tree; 1178 } active, inactive; 1179 } rules[PF_RULESET_MAX]; 1180 struct pf_kanchor *anchor; 1181 u_int32_t tticket; 1182 int tables; 1183 int topen; 1184 }; 1185 1186 RB_HEAD(pf_kanchor_global, pf_kanchor); 1187 RB_HEAD(pf_kanchor_node, pf_kanchor); 1188 struct pf_kanchor { 1189 RB_ENTRY(pf_kanchor) entry_global; 1190 RB_ENTRY(pf_kanchor) entry_node; 1191 struct pf_kanchor *parent; 1192 struct pf_kanchor_node children; 1193 char name[PF_ANCHOR_NAME_SIZE]; 1194 char path[MAXPATHLEN]; 1195 struct pf_kruleset ruleset; 1196 int refcnt; /* anchor rules */ 1197 }; 1198 RB_PROTOTYPE(pf_kanchor_global, pf_kanchor, entry_global, pf_anchor_compare); 1199 RB_PROTOTYPE(pf_kanchor_node, pf_kanchor, entry_node, pf_kanchor_compare); 1200 1201 #define PF_RESERVED_ANCHOR "_pf" 1202 1203 #define PFR_TFLAG_PERSIST 0x00000001 1204 #define PFR_TFLAG_CONST 0x00000002 1205 #define PFR_TFLAG_ACTIVE 0x00000004 1206 #define PFR_TFLAG_INACTIVE 0x00000008 1207 #define PFR_TFLAG_REFERENCED 0x00000010 1208 #define PFR_TFLAG_REFDANCHOR 0x00000020 1209 #define PFR_TFLAG_COUNTERS 0x00000040 1210 /* Adjust masks below when adding flags. */ 1211 #define PFR_TFLAG_USRMASK (PFR_TFLAG_PERSIST | \ 1212 PFR_TFLAG_CONST | \ 1213 PFR_TFLAG_COUNTERS) 1214 #define PFR_TFLAG_SETMASK (PFR_TFLAG_ACTIVE | \ 1215 PFR_TFLAG_INACTIVE | \ 1216 PFR_TFLAG_REFERENCED | \ 1217 PFR_TFLAG_REFDANCHOR) 1218 #define PFR_TFLAG_ALLMASK (PFR_TFLAG_PERSIST | \ 1219 PFR_TFLAG_CONST | \ 1220 PFR_TFLAG_ACTIVE | \ 1221 PFR_TFLAG_INACTIVE | \ 1222 PFR_TFLAG_REFERENCED | \ 1223 PFR_TFLAG_REFDANCHOR | \ 1224 PFR_TFLAG_COUNTERS) 1225 1226 struct pf_kanchor_stackframe; 1227 struct pf_keth_anchor_stackframe; 1228 1229 struct pfr_table { 1230 char pfrt_anchor[MAXPATHLEN]; 1231 char pfrt_name[PF_TABLE_NAME_SIZE]; 1232 u_int32_t pfrt_flags; 1233 u_int8_t pfrt_fback; 1234 }; 1235 1236 enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED, 1237 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE, 1238 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_NOCOUNT, PFR_FB_MAX }; 1239 1240 struct pfr_addr { 1241 union { 1242 struct in_addr _pfra_ip4addr; 1243 struct in6_addr _pfra_ip6addr; 1244 } pfra_u; 1245 u_int8_t pfra_af; 1246 u_int8_t pfra_net; 1247 u_int8_t pfra_not; 1248 u_int8_t pfra_fback; 1249 }; 1250 #define pfra_ip4addr pfra_u._pfra_ip4addr 1251 #define pfra_ip6addr pfra_u._pfra_ip6addr 1252 1253 enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX }; 1254 enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX }; 1255 enum { PFR_TYPE_PACKETS, PFR_TYPE_BYTES, PFR_TYPE_MAX }; 1256 #define PFR_NUM_COUNTERS (PFR_DIR_MAX * PFR_OP_ADDR_MAX * PFR_TYPE_MAX) 1257 #define PFR_OP_XPASS PFR_OP_ADDR_MAX 1258 1259 struct pfr_astats { 1260 struct pfr_addr pfras_a; 1261 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1262 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1263 long pfras_tzero; 1264 }; 1265 1266 enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX }; 1267 1268 struct pfr_tstats { 1269 struct pfr_table pfrts_t; 1270 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1271 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1272 u_int64_t pfrts_match; 1273 u_int64_t pfrts_nomatch; 1274 long pfrts_tzero; 1275 int pfrts_cnt; 1276 int pfrts_refcnt[PFR_REFCNT_MAX]; 1277 }; 1278 1279 #ifdef _KERNEL 1280 1281 struct pfr_kstate_counter { 1282 counter_u64_t pkc_pcpu; 1283 u_int64_t pkc_zero; 1284 }; 1285 1286 static inline int 1287 pfr_kstate_counter_init(struct pfr_kstate_counter *pfrc, int flags) 1288 { 1289 1290 pfrc->pkc_zero = 0; 1291 pfrc->pkc_pcpu = counter_u64_alloc(flags); 1292 if (pfrc->pkc_pcpu == NULL) 1293 return (ENOMEM); 1294 return (0); 1295 } 1296 1297 static inline void 1298 pfr_kstate_counter_deinit(struct pfr_kstate_counter *pfrc) 1299 { 1300 1301 counter_u64_free(pfrc->pkc_pcpu); 1302 } 1303 1304 static inline u_int64_t 1305 pfr_kstate_counter_fetch(struct pfr_kstate_counter *pfrc) 1306 { 1307 u_int64_t c; 1308 1309 c = counter_u64_fetch(pfrc->pkc_pcpu); 1310 c -= pfrc->pkc_zero; 1311 return (c); 1312 } 1313 1314 static inline void 1315 pfr_kstate_counter_zero(struct pfr_kstate_counter *pfrc) 1316 { 1317 u_int64_t c; 1318 1319 c = counter_u64_fetch(pfrc->pkc_pcpu); 1320 pfrc->pkc_zero = c; 1321 } 1322 1323 static inline void 1324 pfr_kstate_counter_add(struct pfr_kstate_counter *pfrc, int64_t n) 1325 { 1326 1327 counter_u64_add(pfrc->pkc_pcpu, n); 1328 } 1329 1330 struct pfr_ktstats { 1331 struct pfr_table pfrts_t; 1332 struct pfr_kstate_counter pfrkts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1333 struct pfr_kstate_counter pfrkts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1334 struct pfr_kstate_counter pfrkts_match; 1335 struct pfr_kstate_counter pfrkts_nomatch; 1336 long pfrkts_tzero; 1337 int pfrkts_cnt; 1338 int pfrkts_refcnt[PFR_REFCNT_MAX]; 1339 }; 1340 1341 #endif /* _KERNEL */ 1342 1343 #define pfrts_name pfrts_t.pfrt_name 1344 #define pfrts_flags pfrts_t.pfrt_flags 1345 1346 #ifndef _SOCKADDR_UNION_DEFINED 1347 #define _SOCKADDR_UNION_DEFINED 1348 union sockaddr_union { 1349 struct sockaddr sa; 1350 struct sockaddr_in sin; 1351 struct sockaddr_in6 sin6; 1352 }; 1353 #endif /* _SOCKADDR_UNION_DEFINED */ 1354 1355 struct pfr_kcounters { 1356 counter_u64_t pfrkc_counters; 1357 long pfrkc_tzero; 1358 }; 1359 #define pfr_kentry_counter(kc, dir, op, t) \ 1360 ((kc)->pfrkc_counters + \ 1361 (dir) * PFR_OP_ADDR_MAX * PFR_TYPE_MAX + (op) * PFR_TYPE_MAX + (t)) 1362 1363 #ifdef _KERNEL 1364 SLIST_HEAD(pfr_kentryworkq, pfr_kentry); 1365 struct pfr_kentry { 1366 struct radix_node pfrke_node[2]; 1367 union sockaddr_union pfrke_sa; 1368 SLIST_ENTRY(pfr_kentry) pfrke_workq; 1369 struct pfr_kcounters pfrke_counters; 1370 u_int8_t pfrke_af; 1371 u_int8_t pfrke_net; 1372 u_int8_t pfrke_not; 1373 u_int8_t pfrke_mark; 1374 }; 1375 1376 SLIST_HEAD(pfr_ktableworkq, pfr_ktable); 1377 RB_HEAD(pfr_ktablehead, pfr_ktable); 1378 struct pfr_ktable { 1379 struct pfr_ktstats pfrkt_kts; 1380 RB_ENTRY(pfr_ktable) pfrkt_tree; 1381 SLIST_ENTRY(pfr_ktable) pfrkt_workq; 1382 struct radix_node_head *pfrkt_ip4; 1383 struct radix_node_head *pfrkt_ip6; 1384 struct pfr_ktable *pfrkt_shadow; 1385 struct pfr_ktable *pfrkt_root; 1386 struct pf_kruleset *pfrkt_rs; 1387 long pfrkt_larg; 1388 int pfrkt_nflags; 1389 }; 1390 #define pfrkt_t pfrkt_kts.pfrts_t 1391 #define pfrkt_name pfrkt_t.pfrt_name 1392 #define pfrkt_anchor pfrkt_t.pfrt_anchor 1393 #define pfrkt_ruleset pfrkt_t.pfrt_ruleset 1394 #define pfrkt_flags pfrkt_t.pfrt_flags 1395 #define pfrkt_cnt pfrkt_kts.pfrkts_cnt 1396 #define pfrkt_refcnt pfrkt_kts.pfrkts_refcnt 1397 #define pfrkt_packets pfrkt_kts.pfrkts_packets 1398 #define pfrkt_bytes pfrkt_kts.pfrkts_bytes 1399 #define pfrkt_match pfrkt_kts.pfrkts_match 1400 #define pfrkt_nomatch pfrkt_kts.pfrkts_nomatch 1401 #define pfrkt_tzero pfrkt_kts.pfrkts_tzero 1402 #endif 1403 1404 #ifdef _KERNEL 1405 struct pfi_kkif { 1406 char pfik_name[IFNAMSIZ]; 1407 union { 1408 RB_ENTRY(pfi_kkif) _pfik_tree; 1409 LIST_ENTRY(pfi_kkif) _pfik_list; 1410 } _pfik_glue; 1411 #define pfik_tree _pfik_glue._pfik_tree 1412 #define pfik_list _pfik_glue._pfik_list 1413 struct pf_counter_u64 pfik_packets[2][2][2]; 1414 struct pf_counter_u64 pfik_bytes[2][2][2]; 1415 u_int32_t pfik_tzero; 1416 u_int pfik_flags; 1417 struct ifnet *pfik_ifp; 1418 struct ifg_group *pfik_group; 1419 u_int pfik_rulerefs; 1420 TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs; 1421 #ifdef PF_WANT_32_TO_64_COUNTER 1422 LIST_ENTRY(pfi_kkif) pfik_allkiflist; 1423 #endif 1424 }; 1425 #endif 1426 1427 #define PFI_IFLAG_REFS 0x0001 /* has state references */ 1428 #define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */ 1429 1430 #ifdef _KERNEL 1431 struct pf_pdesc { 1432 struct { 1433 int done; 1434 uid_t uid; 1435 gid_t gid; 1436 } lookup; 1437 u_int64_t tot_len; /* Make Mickey money */ 1438 union pf_headers { 1439 struct tcphdr tcp; 1440 struct udphdr udp; 1441 struct icmp icmp; 1442 #ifdef INET6 1443 struct icmp6_hdr icmp6; 1444 #endif /* INET6 */ 1445 char any[0]; 1446 } hdr; 1447 1448 struct pf_krule *nat_rule; /* nat/rdr rule applied to packet */ 1449 struct pf_addr *src; /* src address */ 1450 struct pf_addr *dst; /* dst address */ 1451 u_int16_t *sport; 1452 u_int16_t *dport; 1453 struct pf_mtag *pf_mtag; 1454 struct pf_rule_actions act; 1455 1456 u_int32_t p_len; /* total length of payload */ 1457 1458 u_int16_t *ip_sum; 1459 u_int16_t *proto_sum; 1460 u_int16_t flags; /* Let SCRUB trigger behavior in 1461 * state code. Easier than tags */ 1462 #define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */ 1463 #define PFDESC_IP_REAS 0x0002 /* IP frags would've been reassembled */ 1464 sa_family_t af; 1465 u_int8_t proto; 1466 u_int8_t tos; 1467 u_int8_t dir; /* direction */ 1468 u_int8_t sidx; /* key index for source */ 1469 u_int8_t didx; /* key index for destination */ 1470 }; 1471 #endif 1472 1473 /* flags for RDR options */ 1474 #define PF_DPORT_RANGE 0x01 /* Dest port uses range */ 1475 #define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */ 1476 1477 /* UDP state enumeration */ 1478 #define PFUDPS_NO_TRAFFIC 0 1479 #define PFUDPS_SINGLE 1 1480 #define PFUDPS_MULTIPLE 2 1481 1482 #define PFUDPS_NSTATES 3 /* number of state levels */ 1483 1484 #define PFUDPS_NAMES { \ 1485 "NO_TRAFFIC", \ 1486 "SINGLE", \ 1487 "MULTIPLE", \ 1488 NULL \ 1489 } 1490 1491 /* Other protocol state enumeration */ 1492 #define PFOTHERS_NO_TRAFFIC 0 1493 #define PFOTHERS_SINGLE 1 1494 #define PFOTHERS_MULTIPLE 2 1495 1496 #define PFOTHERS_NSTATES 3 /* number of state levels */ 1497 1498 #define PFOTHERS_NAMES { \ 1499 "NO_TRAFFIC", \ 1500 "SINGLE", \ 1501 "MULTIPLE", \ 1502 NULL \ 1503 } 1504 1505 #define ACTION_SET(a, x) \ 1506 do { \ 1507 if ((a) != NULL) \ 1508 *(a) = (x); \ 1509 } while (0) 1510 1511 #define REASON_SET(a, x) \ 1512 do { \ 1513 if ((a) != NULL) \ 1514 *(a) = (x); \ 1515 if (x < PFRES_MAX) \ 1516 counter_u64_add(V_pf_status.counters[x], 1); \ 1517 } while (0) 1518 1519 enum pf_syncookies_mode { 1520 PF_SYNCOOKIES_NEVER = 0, 1521 PF_SYNCOOKIES_ALWAYS = 1, 1522 PF_SYNCOOKIES_ADAPTIVE = 2, 1523 PF_SYNCOOKIES_MODE_MAX = PF_SYNCOOKIES_ADAPTIVE 1524 }; 1525 1526 #define PF_SYNCOOKIES_HIWATPCT 25 1527 #define PF_SYNCOOKIES_LOWATPCT (PF_SYNCOOKIES_HIWATPCT / 2) 1528 1529 #ifdef _KERNEL 1530 struct pf_kstatus { 1531 counter_u64_t counters[PFRES_MAX]; /* reason for passing/dropping */ 1532 counter_u64_t lcounters[KLCNT_MAX]; /* limit counters */ 1533 struct pf_counter_u64 fcounters[FCNT_MAX]; /* state operation counters */ 1534 counter_u64_t scounters[SCNT_MAX]; /* src_node operation counters */ 1535 uint32_t states; 1536 uint32_t src_nodes; 1537 uint32_t running; 1538 uint32_t since; 1539 uint32_t debug; 1540 uint32_t hostid; 1541 char ifname[IFNAMSIZ]; 1542 uint8_t pf_chksum[PF_MD5_DIGEST_LENGTH]; 1543 bool keep_counters; 1544 enum pf_syncookies_mode syncookies_mode; 1545 bool syncookies_active; 1546 uint64_t syncookies_inflight[2]; 1547 uint32_t states_halfopen; 1548 }; 1549 #endif 1550 1551 struct pf_divert { 1552 union { 1553 struct in_addr ipv4; 1554 struct in6_addr ipv6; 1555 } addr; 1556 u_int16_t port; 1557 }; 1558 1559 #define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */ 1560 #define PFR_KENTRY_HIWAT 200000 /* Number of table entries */ 1561 1562 /* 1563 * Limit the length of the fragment queue traversal. Remember 1564 * search entry points based on the fragment offset. 1565 */ 1566 #define PF_FRAG_ENTRY_POINTS 16 1567 1568 /* 1569 * The number of entries in the fragment queue must be limited 1570 * to avoid DoS by linear searching. Instead of a global limit, 1571 * use a limit per entry point. For large packets these sum up. 1572 */ 1573 #define PF_FRAG_ENTRY_LIMIT 64 1574 1575 /* 1576 * ioctl parameter structures 1577 */ 1578 1579 struct pfioc_pooladdr { 1580 u_int32_t action; 1581 u_int32_t ticket; 1582 u_int32_t nr; 1583 u_int32_t r_num; 1584 u_int8_t r_action; 1585 u_int8_t r_last; 1586 u_int8_t af; 1587 char anchor[MAXPATHLEN]; 1588 struct pf_pooladdr addr; 1589 }; 1590 1591 struct pfioc_rule { 1592 u_int32_t action; 1593 u_int32_t ticket; 1594 u_int32_t pool_ticket; 1595 u_int32_t nr; 1596 char anchor[MAXPATHLEN]; 1597 char anchor_call[MAXPATHLEN]; 1598 struct pf_rule rule; 1599 }; 1600 1601 struct pfioc_natlook { 1602 struct pf_addr saddr; 1603 struct pf_addr daddr; 1604 struct pf_addr rsaddr; 1605 struct pf_addr rdaddr; 1606 u_int16_t sport; 1607 u_int16_t dport; 1608 u_int16_t rsport; 1609 u_int16_t rdport; 1610 sa_family_t af; 1611 u_int8_t proto; 1612 u_int8_t direction; 1613 }; 1614 1615 struct pfioc_state { 1616 struct pfsync_state state; 1617 }; 1618 1619 struct pfioc_src_node_kill { 1620 sa_family_t psnk_af; 1621 struct pf_rule_addr psnk_src; 1622 struct pf_rule_addr psnk_dst; 1623 u_int psnk_killed; 1624 }; 1625 1626 #ifdef _KERNEL 1627 struct pf_kstate_kill { 1628 struct pf_state_cmp psk_pfcmp; 1629 sa_family_t psk_af; 1630 int psk_proto; 1631 struct pf_rule_addr psk_src; 1632 struct pf_rule_addr psk_dst; 1633 struct pf_rule_addr psk_rt_addr; 1634 char psk_ifname[IFNAMSIZ]; 1635 char psk_label[PF_RULE_LABEL_SIZE]; 1636 u_int psk_killed; 1637 bool psk_kill_match; 1638 }; 1639 #endif 1640 1641 struct pfioc_state_kill { 1642 struct pf_state_cmp psk_pfcmp; 1643 sa_family_t psk_af; 1644 int psk_proto; 1645 struct pf_rule_addr psk_src; 1646 struct pf_rule_addr psk_dst; 1647 char psk_ifname[IFNAMSIZ]; 1648 char psk_label[PF_RULE_LABEL_SIZE]; 1649 u_int psk_killed; 1650 }; 1651 1652 struct pfioc_states { 1653 int ps_len; 1654 union { 1655 caddr_t psu_buf; 1656 struct pfsync_state *psu_states; 1657 } ps_u; 1658 #define ps_buf ps_u.psu_buf 1659 #define ps_states ps_u.psu_states 1660 }; 1661 1662 struct pfioc_states_v2 { 1663 int ps_len; 1664 uint64_t ps_req_version; 1665 union { 1666 caddr_t psu_buf; 1667 struct pf_state_export *psu_states; 1668 } ps_u; 1669 #define ps_buf ps_u.psu_buf 1670 #define ps_states ps_u.psu_states 1671 }; 1672 1673 struct pfioc_src_nodes { 1674 int psn_len; 1675 union { 1676 caddr_t psu_buf; 1677 struct pf_src_node *psu_src_nodes; 1678 } psn_u; 1679 #define psn_buf psn_u.psu_buf 1680 #define psn_src_nodes psn_u.psu_src_nodes 1681 }; 1682 1683 struct pfioc_if { 1684 char ifname[IFNAMSIZ]; 1685 }; 1686 1687 struct pfioc_tm { 1688 int timeout; 1689 int seconds; 1690 }; 1691 1692 struct pfioc_limit { 1693 int index; 1694 unsigned limit; 1695 }; 1696 1697 struct pfioc_altq_v0 { 1698 u_int32_t action; 1699 u_int32_t ticket; 1700 u_int32_t nr; 1701 struct pf_altq_v0 altq; 1702 }; 1703 1704 struct pfioc_altq_v1 { 1705 u_int32_t action; 1706 u_int32_t ticket; 1707 u_int32_t nr; 1708 /* 1709 * Placed here so code that only uses the above parameters can be 1710 * written entirely in terms of the v0 or v1 type. 1711 */ 1712 u_int32_t version; 1713 struct pf_altq_v1 altq; 1714 }; 1715 1716 /* 1717 * Latest version of struct pfioc_altq_vX. This must move in lock-step with 1718 * the latest version of struct pf_altq_vX as it has that struct as a 1719 * member. 1720 */ 1721 #define PFIOC_ALTQ_VERSION PF_ALTQ_VERSION 1722 1723 struct pfioc_qstats_v0 { 1724 u_int32_t ticket; 1725 u_int32_t nr; 1726 void *buf; 1727 int nbytes; 1728 u_int8_t scheduler; 1729 }; 1730 1731 struct pfioc_qstats_v1 { 1732 u_int32_t ticket; 1733 u_int32_t nr; 1734 void *buf; 1735 int nbytes; 1736 u_int8_t scheduler; 1737 /* 1738 * Placed here so code that only uses the above parameters can be 1739 * written entirely in terms of the v0 or v1 type. 1740 */ 1741 u_int32_t version; /* Requested version of stats struct */ 1742 }; 1743 1744 /* Latest version of struct pfioc_qstats_vX */ 1745 #define PFIOC_QSTATS_VERSION 1 1746 1747 struct pfioc_ruleset { 1748 u_int32_t nr; 1749 char path[MAXPATHLEN]; 1750 char name[PF_ANCHOR_NAME_SIZE]; 1751 }; 1752 1753 #define PF_RULESET_ALTQ (PF_RULESET_MAX) 1754 #define PF_RULESET_TABLE (PF_RULESET_MAX+1) 1755 #define PF_RULESET_ETH (PF_RULESET_MAX+2) 1756 struct pfioc_trans { 1757 int size; /* number of elements */ 1758 int esize; /* size of each element in bytes */ 1759 struct pfioc_trans_e { 1760 int rs_num; 1761 char anchor[MAXPATHLEN]; 1762 u_int32_t ticket; 1763 } *array; 1764 }; 1765 1766 #define PFR_FLAG_ATOMIC 0x00000001 /* unused */ 1767 #define PFR_FLAG_DUMMY 0x00000002 1768 #define PFR_FLAG_FEEDBACK 0x00000004 1769 #define PFR_FLAG_CLSTATS 0x00000008 1770 #define PFR_FLAG_ADDRSTOO 0x00000010 1771 #define PFR_FLAG_REPLACE 0x00000020 1772 #define PFR_FLAG_ALLRSETS 0x00000040 1773 #define PFR_FLAG_ALLMASK 0x0000007F 1774 #ifdef _KERNEL 1775 #define PFR_FLAG_USERIOCTL 0x10000000 1776 #endif 1777 1778 struct pfioc_table { 1779 struct pfr_table pfrio_table; 1780 void *pfrio_buffer; 1781 int pfrio_esize; 1782 int pfrio_size; 1783 int pfrio_size2; 1784 int pfrio_nadd; 1785 int pfrio_ndel; 1786 int pfrio_nchange; 1787 int pfrio_flags; 1788 u_int32_t pfrio_ticket; 1789 }; 1790 #define pfrio_exists pfrio_nadd 1791 #define pfrio_nzero pfrio_nadd 1792 #define pfrio_nmatch pfrio_nadd 1793 #define pfrio_naddr pfrio_size2 1794 #define pfrio_setflag pfrio_size2 1795 #define pfrio_clrflag pfrio_nadd 1796 1797 struct pfioc_iface { 1798 char pfiio_name[IFNAMSIZ]; 1799 void *pfiio_buffer; 1800 int pfiio_esize; 1801 int pfiio_size; 1802 int pfiio_nzero; 1803 int pfiio_flags; 1804 }; 1805 1806 /* 1807 * ioctl operations 1808 */ 1809 1810 #define DIOCSTART _IO ('D', 1) 1811 #define DIOCSTOP _IO ('D', 2) 1812 #define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule) 1813 #define DIOCADDRULENV _IOWR('D', 4, struct pfioc_nv) 1814 #define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule) 1815 #define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule) 1816 #define DIOCGETRULENV _IOWR('D', 7, struct pfioc_nv) 1817 /* XXX cut 8 - 17 */ 1818 #define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill) 1819 #define DIOCCLRSTATESNV _IOWR('D', 18, struct pfioc_nv) 1820 #define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state) 1821 #define DIOCGETSTATENV _IOWR('D', 19, struct pfioc_nv) 1822 #define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if) 1823 #define DIOCGETSTATUS _IOWR('D', 21, struct pf_status) 1824 #define DIOCGETSTATUSNV _IOWR('D', 21, struct pfioc_nv) 1825 #define DIOCCLRSTATUS _IO ('D', 22) 1826 #define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook) 1827 #define DIOCSETDEBUG _IOWR('D', 24, u_int32_t) 1828 #define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states) 1829 #define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule) 1830 /* XXX cut 26 - 28 */ 1831 #define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm) 1832 #define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm) 1833 #define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state) 1834 #define DIOCCLRRULECTRS _IO ('D', 38) 1835 #define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit) 1836 #define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit) 1837 #define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill) 1838 #define DIOCKILLSTATESNV _IOWR('D', 41, struct pfioc_nv) 1839 #define DIOCSTARTALTQ _IO ('D', 42) 1840 #define DIOCSTOPALTQ _IO ('D', 43) 1841 #define DIOCADDALTQV0 _IOWR('D', 45, struct pfioc_altq_v0) 1842 #define DIOCADDALTQV1 _IOWR('D', 45, struct pfioc_altq_v1) 1843 #define DIOCGETALTQSV0 _IOWR('D', 47, struct pfioc_altq_v0) 1844 #define DIOCGETALTQSV1 _IOWR('D', 47, struct pfioc_altq_v1) 1845 #define DIOCGETALTQV0 _IOWR('D', 48, struct pfioc_altq_v0) 1846 #define DIOCGETALTQV1 _IOWR('D', 48, struct pfioc_altq_v1) 1847 #define DIOCCHANGEALTQV0 _IOWR('D', 49, struct pfioc_altq_v0) 1848 #define DIOCCHANGEALTQV1 _IOWR('D', 49, struct pfioc_altq_v1) 1849 #define DIOCGETQSTATSV0 _IOWR('D', 50, struct pfioc_qstats_v0) 1850 #define DIOCGETQSTATSV1 _IOWR('D', 50, struct pfioc_qstats_v1) 1851 #define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr) 1852 #define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr) 1853 #define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr) 1854 #define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr) 1855 #define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr) 1856 /* XXX cut 55 - 57 */ 1857 #define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset) 1858 #define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset) 1859 #define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table) 1860 #define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table) 1861 #define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table) 1862 #define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table) 1863 #define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table) 1864 #define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table) 1865 #define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table) 1866 #define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table) 1867 #define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table) 1868 #define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table) 1869 #define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table) 1870 #define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table) 1871 #define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table) 1872 #define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table) 1873 #define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table) 1874 #define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table) 1875 #define DIOCOSFPFLUSH _IO('D', 78) 1876 #define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl) 1877 #define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl) 1878 #define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans) 1879 #define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans) 1880 #define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans) 1881 #define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes) 1882 #define DIOCCLRSRCNODES _IO('D', 85) 1883 #define DIOCSETHOSTID _IOWR('D', 86, u_int32_t) 1884 #define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface) 1885 #define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface) 1886 #define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface) 1887 #define DIOCKILLSRCNODES _IOWR('D', 91, struct pfioc_src_node_kill) 1888 #define DIOCGIFSPEEDV0 _IOWR('D', 92, struct pf_ifspeed_v0) 1889 #define DIOCGIFSPEEDV1 _IOWR('D', 92, struct pf_ifspeed_v1) 1890 #define DIOCGETSTATESV2 _IOWR('D', 93, struct pfioc_states_v2) 1891 #define DIOCGETSYNCOOKIES _IOWR('D', 94, struct pfioc_nv) 1892 #define DIOCSETSYNCOOKIES _IOWR('D', 95, struct pfioc_nv) 1893 #define DIOCKEEPCOUNTERS _IOWR('D', 96, struct pfioc_nv) 1894 #define DIOCKEEPCOUNTERS_FREEBSD13 _IOWR('D', 92, struct pfioc_nv) 1895 #define DIOCADDETHRULE _IOWR('D', 97, struct pfioc_nv) 1896 #define DIOCGETETHRULE _IOWR('D', 98, struct pfioc_nv) 1897 #define DIOCGETETHRULES _IOWR('D', 99, struct pfioc_nv) 1898 #define DIOCGETETHRULESETS _IOWR('D', 100, struct pfioc_nv) 1899 #define DIOCGETETHRULESET _IOWR('D', 101, struct pfioc_nv) 1900 1901 struct pf_ifspeed_v0 { 1902 char ifname[IFNAMSIZ]; 1903 u_int32_t baudrate; 1904 }; 1905 1906 struct pf_ifspeed_v1 { 1907 char ifname[IFNAMSIZ]; 1908 u_int32_t baudrate32; 1909 /* layout identical to struct pf_ifspeed_v0 up to this point */ 1910 u_int64_t baudrate; 1911 }; 1912 1913 /* Latest version of struct pf_ifspeed_vX */ 1914 #define PF_IFSPEED_VERSION 1 1915 1916 /* 1917 * Compatibility and convenience macros 1918 */ 1919 #ifndef _KERNEL 1920 #ifdef PFIOC_USE_LATEST 1921 /* 1922 * Maintaining in-tree consumers of the ioctl interface is easier when that 1923 * code can be written in terms old names that refer to the latest interface 1924 * version as that reduces the required changes in the consumers to those 1925 * that are functionally necessary to accommodate a new interface version. 1926 */ 1927 #define pfioc_altq __CONCAT(pfioc_altq_v, PFIOC_ALTQ_VERSION) 1928 #define pfioc_qstats __CONCAT(pfioc_qstats_v, PFIOC_QSTATS_VERSION) 1929 #define pf_ifspeed __CONCAT(pf_ifspeed_v, PF_IFSPEED_VERSION) 1930 1931 #define DIOCADDALTQ __CONCAT(DIOCADDALTQV, PFIOC_ALTQ_VERSION) 1932 #define DIOCGETALTQS __CONCAT(DIOCGETALTQSV, PFIOC_ALTQ_VERSION) 1933 #define DIOCGETALTQ __CONCAT(DIOCGETALTQV, PFIOC_ALTQ_VERSION) 1934 #define DIOCCHANGEALTQ __CONCAT(DIOCCHANGEALTQV, PFIOC_ALTQ_VERSION) 1935 #define DIOCGETQSTATS __CONCAT(DIOCGETQSTATSV, PFIOC_QSTATS_VERSION) 1936 #define DIOCGIFSPEED __CONCAT(DIOCGIFSPEEDV, PF_IFSPEED_VERSION) 1937 #else 1938 /* 1939 * When building out-of-tree code that is written for the old interface, 1940 * such as may exist in ports for example, resolve the old struct tags and 1941 * ioctl command names to the v0 versions. 1942 */ 1943 #define pfioc_altq __CONCAT(pfioc_altq_v, 0) 1944 #define pfioc_qstats __CONCAT(pfioc_qstats_v, 0) 1945 #define pf_ifspeed __CONCAT(pf_ifspeed_v, 0) 1946 1947 #define DIOCADDALTQ __CONCAT(DIOCADDALTQV, 0) 1948 #define DIOCGETALTQS __CONCAT(DIOCGETALTQSV, 0) 1949 #define DIOCGETALTQ __CONCAT(DIOCGETALTQV, 0) 1950 #define DIOCCHANGEALTQ __CONCAT(DIOCCHANGEALTQV, 0) 1951 #define DIOCGETQSTATS __CONCAT(DIOCGETQSTATSV, 0) 1952 #define DIOCGIFSPEED __CONCAT(DIOCGIFSPEEDV, 0) 1953 #endif /* PFIOC_USE_LATEST */ 1954 #endif /* _KERNEL */ 1955 1956 #ifdef _KERNEL 1957 LIST_HEAD(pf_ksrc_node_list, pf_ksrc_node); 1958 struct pf_srchash { 1959 struct pf_ksrc_node_list nodes; 1960 struct mtx lock; 1961 }; 1962 1963 struct pf_keyhash { 1964 LIST_HEAD(, pf_state_key) keys; 1965 struct mtx lock; 1966 }; 1967 1968 struct pf_idhash { 1969 LIST_HEAD(, pf_kstate) states; 1970 struct mtx lock; 1971 }; 1972 1973 extern u_long pf_ioctl_maxcount; 1974 extern u_long pf_hashmask; 1975 extern u_long pf_srchashmask; 1976 #define PF_HASHSIZ (131072) 1977 #define PF_SRCHASHSIZ (PF_HASHSIZ/4) 1978 VNET_DECLARE(struct pf_keyhash *, pf_keyhash); 1979 VNET_DECLARE(struct pf_idhash *, pf_idhash); 1980 #define V_pf_keyhash VNET(pf_keyhash) 1981 #define V_pf_idhash VNET(pf_idhash) 1982 VNET_DECLARE(struct pf_srchash *, pf_srchash); 1983 #define V_pf_srchash VNET(pf_srchash) 1984 1985 #define PF_IDHASH(s) (be64toh((s)->id) % (pf_hashmask + 1)) 1986 1987 VNET_DECLARE(void *, pf_swi_cookie); 1988 #define V_pf_swi_cookie VNET(pf_swi_cookie) 1989 VNET_DECLARE(struct intr_event *, pf_swi_ie); 1990 #define V_pf_swi_ie VNET(pf_swi_ie) 1991 1992 VNET_DECLARE(struct unrhdr64, pf_stateid); 1993 #define V_pf_stateid VNET(pf_stateid) 1994 1995 TAILQ_HEAD(pf_altqqueue, pf_altq); 1996 VNET_DECLARE(struct pf_altqqueue, pf_altqs[4]); 1997 #define V_pf_altqs VNET(pf_altqs) 1998 VNET_DECLARE(struct pf_kpalist, pf_pabuf); 1999 #define V_pf_pabuf VNET(pf_pabuf) 2000 2001 VNET_DECLARE(u_int32_t, ticket_altqs_active); 2002 #define V_ticket_altqs_active VNET(ticket_altqs_active) 2003 VNET_DECLARE(u_int32_t, ticket_altqs_inactive); 2004 #define V_ticket_altqs_inactive VNET(ticket_altqs_inactive) 2005 VNET_DECLARE(int, altqs_inactive_open); 2006 #define V_altqs_inactive_open VNET(altqs_inactive_open) 2007 VNET_DECLARE(u_int32_t, ticket_pabuf); 2008 #define V_ticket_pabuf VNET(ticket_pabuf) 2009 VNET_DECLARE(struct pf_altqqueue *, pf_altqs_active); 2010 #define V_pf_altqs_active VNET(pf_altqs_active) 2011 VNET_DECLARE(struct pf_altqqueue *, pf_altq_ifs_active); 2012 #define V_pf_altq_ifs_active VNET(pf_altq_ifs_active) 2013 VNET_DECLARE(struct pf_altqqueue *, pf_altqs_inactive); 2014 #define V_pf_altqs_inactive VNET(pf_altqs_inactive) 2015 VNET_DECLARE(struct pf_altqqueue *, pf_altq_ifs_inactive); 2016 #define V_pf_altq_ifs_inactive VNET(pf_altq_ifs_inactive) 2017 2018 VNET_DECLARE(struct pf_krulequeue, pf_unlinked_rules); 2019 #define V_pf_unlinked_rules VNET(pf_unlinked_rules) 2020 2021 #ifdef PF_WANT_32_TO_64_COUNTER 2022 LIST_HEAD(allkiflist_head, pfi_kkif); 2023 VNET_DECLARE(struct allkiflist_head, pf_allkiflist); 2024 #define V_pf_allkiflist VNET(pf_allkiflist) 2025 VNET_DECLARE(size_t, pf_allkifcount); 2026 #define V_pf_allkifcount VNET(pf_allkifcount) 2027 VNET_DECLARE(struct pfi_kkif *, pf_kifmarker); 2028 #define V_pf_kifmarker VNET(pf_kifmarker) 2029 2030 LIST_HEAD(allrulelist_head, pf_krule); 2031 VNET_DECLARE(struct allrulelist_head, pf_allrulelist); 2032 #define V_pf_allrulelist VNET(pf_allrulelist) 2033 VNET_DECLARE(size_t, pf_allrulecount); 2034 #define V_pf_allrulecount VNET(pf_allrulecount) 2035 VNET_DECLARE(struct pf_krule *, pf_rulemarker); 2036 #define V_pf_rulemarker VNET(pf_rulemarker) 2037 #endif 2038 2039 void pf_initialize(void); 2040 void pf_mtag_initialize(void); 2041 void pf_mtag_cleanup(void); 2042 void pf_cleanup(void); 2043 2044 struct pf_mtag *pf_get_mtag(struct mbuf *); 2045 2046 extern void pf_calc_skip_steps(struct pf_krulequeue *); 2047 #ifdef ALTQ 2048 extern void pf_altq_ifnet_event(struct ifnet *, int); 2049 #endif 2050 VNET_DECLARE(uma_zone_t, pf_state_z); 2051 #define V_pf_state_z VNET(pf_state_z) 2052 VNET_DECLARE(uma_zone_t, pf_state_key_z); 2053 #define V_pf_state_key_z VNET(pf_state_key_z) 2054 VNET_DECLARE(uma_zone_t, pf_state_scrub_z); 2055 #define V_pf_state_scrub_z VNET(pf_state_scrub_z) 2056 2057 extern void pf_purge_thread(void *); 2058 extern void pf_unload_vnet_purge(void); 2059 extern void pf_intr(void *); 2060 extern void pf_purge_expired_src_nodes(void); 2061 2062 extern int pf_unlink_state(struct pf_kstate *); 2063 extern int pf_state_insert(struct pfi_kkif *, 2064 struct pfi_kkif *, 2065 struct pf_state_key *, 2066 struct pf_state_key *, 2067 struct pf_kstate *); 2068 extern struct pf_kstate *pf_alloc_state(int); 2069 extern void pf_free_state(struct pf_kstate *); 2070 2071 static __inline void 2072 pf_ref_state(struct pf_kstate *s) 2073 { 2074 2075 refcount_acquire(&s->refs); 2076 } 2077 2078 static __inline int 2079 pf_release_state(struct pf_kstate *s) 2080 { 2081 2082 if (refcount_release(&s->refs)) { 2083 pf_free_state(s); 2084 return (1); 2085 } else 2086 return (0); 2087 } 2088 2089 static __inline int 2090 pf_release_staten(struct pf_kstate *s, u_int n) 2091 { 2092 2093 if (refcount_releasen(&s->refs, n)) { 2094 pf_free_state(s); 2095 return (1); 2096 } else 2097 return (0); 2098 } 2099 2100 extern struct pf_kstate *pf_find_state_byid(uint64_t, uint32_t); 2101 extern struct pf_kstate *pf_find_state_all(struct pf_state_key_cmp *, 2102 u_int, int *); 2103 extern bool pf_find_state_all_exists(struct pf_state_key_cmp *, 2104 u_int); 2105 extern struct pf_ksrc_node *pf_find_src_node(struct pf_addr *, 2106 struct pf_krule *, sa_family_t, int); 2107 extern void pf_unlink_src_node(struct pf_ksrc_node *); 2108 extern u_int pf_free_src_nodes(struct pf_ksrc_node_list *); 2109 extern void pf_print_state(struct pf_kstate *); 2110 extern void pf_print_flags(u_int8_t); 2111 extern u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t, 2112 u_int8_t); 2113 extern u_int16_t pf_proto_cksum_fixup(struct mbuf *, u_int16_t, 2114 u_int16_t, u_int16_t, u_int8_t); 2115 2116 VNET_DECLARE(struct ifnet *, sync_ifp); 2117 #define V_sync_ifp VNET(sync_ifp); 2118 VNET_DECLARE(struct pf_krule, pf_default_rule); 2119 #define V_pf_default_rule VNET(pf_default_rule) 2120 extern void pf_addrcpy(struct pf_addr *, struct pf_addr *, 2121 u_int8_t); 2122 void pf_free_rule(struct pf_krule *); 2123 2124 int pf_test_eth(int, int, struct ifnet *, struct mbuf **, struct inpcb *); 2125 #ifdef INET 2126 int pf_test(int, int, struct ifnet *, struct mbuf **, struct inpcb *); 2127 int pf_normalize_ip(struct mbuf **, int, struct pfi_kkif *, u_short *, 2128 struct pf_pdesc *); 2129 #endif /* INET */ 2130 2131 #ifdef INET6 2132 int pf_test6(int, int, struct ifnet *, struct mbuf **, struct inpcb *); 2133 int pf_normalize_ip6(struct mbuf **, int, struct pfi_kkif *, u_short *, 2134 struct pf_pdesc *); 2135 void pf_poolmask(struct pf_addr *, struct pf_addr*, 2136 struct pf_addr *, struct pf_addr *, u_int8_t); 2137 void pf_addr_inc(struct pf_addr *, sa_family_t); 2138 int pf_refragment6(struct ifnet *, struct mbuf **, struct m_tag *); 2139 #endif /* INET6 */ 2140 2141 u_int32_t pf_new_isn(struct pf_kstate *); 2142 void *pf_pull_hdr(struct mbuf *, int, void *, int, u_short *, u_short *, 2143 sa_family_t); 2144 void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t); 2145 void pf_change_proto_a(struct mbuf *, void *, u_int16_t *, u_int32_t, 2146 u_int8_t); 2147 void pf_change_tcp_a(struct mbuf *, void *, u_int16_t *, u_int32_t); 2148 void pf_patch_16_unaligned(struct mbuf *, u_int16_t *, void *, u_int16_t, 2149 bool, u_int8_t); 2150 void pf_patch_32_unaligned(struct mbuf *, u_int16_t *, void *, u_int32_t, 2151 bool, u_int8_t); 2152 void pf_send_deferred_syn(struct pf_kstate *); 2153 int pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *, 2154 struct pf_addr *, sa_family_t); 2155 int pf_match_addr_range(struct pf_addr *, struct pf_addr *, 2156 struct pf_addr *, sa_family_t); 2157 int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t); 2158 2159 void pf_normalize_init(void); 2160 void pf_normalize_cleanup(void); 2161 int pf_normalize_tcp(int, struct pfi_kkif *, struct mbuf *, int, int, void *, 2162 struct pf_pdesc *); 2163 void pf_normalize_tcp_cleanup(struct pf_kstate *); 2164 int pf_normalize_tcp_init(struct mbuf *, int, struct pf_pdesc *, 2165 struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *); 2166 int pf_normalize_tcp_stateful(struct mbuf *, int, struct pf_pdesc *, 2167 u_short *, struct tcphdr *, struct pf_kstate *, 2168 struct pf_state_peer *, struct pf_state_peer *, int *); 2169 u_int32_t 2170 pf_state_expires(const struct pf_kstate *); 2171 void pf_purge_expired_fragments(void); 2172 void pf_purge_fragments(uint32_t); 2173 int pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kkif *, 2174 int); 2175 int pf_socket_lookup(int, struct pf_pdesc *, struct mbuf *); 2176 struct pf_state_key *pf_alloc_state_key(int); 2177 void pfr_initialize(void); 2178 void pfr_cleanup(void); 2179 int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t); 2180 void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t, 2181 u_int64_t, int, int, int); 2182 int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, sa_family_t); 2183 void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *); 2184 struct pfr_ktable * 2185 pfr_attach_table(struct pf_kruleset *, char *); 2186 struct pfr_ktable * 2187 pfr_eth_attach_table(struct pf_keth_ruleset *, char *); 2188 void pfr_detach_table(struct pfr_ktable *); 2189 int pfr_clr_tables(struct pfr_table *, int *, int); 2190 int pfr_add_tables(struct pfr_table *, int, int *, int); 2191 int pfr_del_tables(struct pfr_table *, int, int *, int); 2192 int pfr_table_count(struct pfr_table *, int); 2193 int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int); 2194 int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int); 2195 int pfr_clr_tstats(struct pfr_table *, int, int *, int); 2196 int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int); 2197 int pfr_clr_addrs(struct pfr_table *, int *, int); 2198 int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *, long); 2199 int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 2200 int); 2201 int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 2202 int); 2203 int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 2204 int *, int *, int *, int, u_int32_t); 2205 int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int); 2206 int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int); 2207 int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *, 2208 int); 2209 int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 2210 int); 2211 int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int); 2212 int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int); 2213 int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int); 2214 int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *, 2215 int *, u_int32_t, int); 2216 2217 MALLOC_DECLARE(PFI_MTYPE); 2218 VNET_DECLARE(struct pfi_kkif *, pfi_all); 2219 #define V_pfi_all VNET(pfi_all) 2220 2221 void pfi_initialize(void); 2222 void pfi_initialize_vnet(void); 2223 void pfi_cleanup(void); 2224 void pfi_cleanup_vnet(void); 2225 void pfi_kkif_ref(struct pfi_kkif *); 2226 void pfi_kkif_unref(struct pfi_kkif *); 2227 struct pfi_kkif *pfi_kkif_find(const char *); 2228 struct pfi_kkif *pfi_kkif_attach(struct pfi_kkif *, const char *); 2229 int pfi_kkif_match(struct pfi_kkif *, struct pfi_kkif *); 2230 void pfi_kkif_purge(void); 2231 int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *, 2232 sa_family_t); 2233 int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t); 2234 void pfi_dynaddr_remove(struct pfi_dynaddr *); 2235 void pfi_dynaddr_copyout(struct pf_addr_wrap *); 2236 void pfi_update_status(const char *, struct pf_status *); 2237 void pfi_get_ifaces(const char *, struct pfi_kif *, int *); 2238 int pfi_set_flags(const char *, int); 2239 int pfi_clear_flags(const char *, int); 2240 2241 int pf_match_tag(struct mbuf *, struct pf_krule *, int *, int); 2242 int pf_tag_packet(struct mbuf *, struct pf_pdesc *, int); 2243 int pf_addr_cmp(struct pf_addr *, struct pf_addr *, 2244 sa_family_t); 2245 2246 u_int16_t pf_get_mss(struct mbuf *, int, u_int16_t, sa_family_t); 2247 u_int8_t pf_get_wscale(struct mbuf *, int, u_int16_t, sa_family_t); 2248 struct mbuf *pf_build_tcp(const struct pf_krule *, sa_family_t, 2249 const struct pf_addr *, const struct pf_addr *, 2250 u_int16_t, u_int16_t, u_int32_t, u_int32_t, 2251 u_int8_t, u_int16_t, u_int16_t, u_int8_t, int, 2252 u_int16_t); 2253 void pf_send_tcp(const struct pf_krule *, sa_family_t, 2254 const struct pf_addr *, const struct pf_addr *, 2255 u_int16_t, u_int16_t, u_int32_t, u_int32_t, 2256 u_int8_t, u_int16_t, u_int16_t, u_int8_t, int, 2257 u_int16_t); 2258 2259 void pf_syncookies_init(void); 2260 void pf_syncookies_cleanup(void); 2261 int pf_get_syncookies(struct pfioc_nv *); 2262 int pf_set_syncookies(struct pfioc_nv *); 2263 int pf_synflood_check(struct pf_pdesc *); 2264 void pf_syncookie_send(struct mbuf *m, int off, 2265 struct pf_pdesc *); 2266 bool pf_syncookie_check(struct pf_pdesc *); 2267 u_int8_t pf_syncookie_validate(struct pf_pdesc *); 2268 struct mbuf * pf_syncookie_recreate_syn(uint8_t, int, 2269 struct pf_pdesc *); 2270 2271 VNET_DECLARE(struct pf_kstatus, pf_status); 2272 #define V_pf_status VNET(pf_status) 2273 2274 struct pf_limit { 2275 uma_zone_t zone; 2276 u_int limit; 2277 }; 2278 VNET_DECLARE(struct pf_limit, pf_limits[PF_LIMIT_MAX]); 2279 #define V_pf_limits VNET(pf_limits) 2280 2281 #endif /* _KERNEL */ 2282 2283 #ifdef _KERNEL 2284 VNET_DECLARE(struct pf_kanchor_global, pf_anchors); 2285 #define V_pf_anchors VNET(pf_anchors) 2286 VNET_DECLARE(struct pf_kanchor, pf_main_anchor); 2287 #define V_pf_main_anchor VNET(pf_main_anchor) 2288 VNET_DECLARE(struct pf_keth_anchor_global, pf_keth_anchors); 2289 #define V_pf_keth_anchors VNET(pf_keth_anchors) 2290 #define pf_main_ruleset V_pf_main_anchor.ruleset 2291 2292 VNET_DECLARE(struct pf_keth_anchor, pf_main_keth_anchor); 2293 #define V_pf_main_keth_anchor VNET(pf_main_keth_anchor) 2294 VNET_DECLARE(struct pf_keth_ruleset*, pf_keth); 2295 #define V_pf_keth VNET(pf_keth) 2296 2297 void pf_init_kruleset(struct pf_kruleset *); 2298 void pf_init_keth(struct pf_keth_ruleset *); 2299 int pf_kanchor_setup(struct pf_krule *, 2300 const struct pf_kruleset *, const char *); 2301 int pf_kanchor_nvcopyout(const struct pf_kruleset *, 2302 const struct pf_krule *, nvlist_t *); 2303 int pf_kanchor_copyout(const struct pf_kruleset *, 2304 const struct pf_krule *, struct pfioc_rule *); 2305 void pf_kanchor_remove(struct pf_krule *); 2306 void pf_remove_if_empty_kruleset(struct pf_kruleset *); 2307 struct pf_kruleset *pf_find_kruleset(const char *); 2308 struct pf_kruleset *pf_find_or_create_kruleset(const char *); 2309 void pf_rs_initialize(void); 2310 2311 2312 struct pf_krule *pf_krule_alloc(void); 2313 2314 void pf_remove_if_empty_keth_ruleset( 2315 struct pf_keth_ruleset *); 2316 struct pf_keth_ruleset *pf_find_keth_ruleset(const char *); 2317 struct pf_keth_anchor *pf_find_keth_anchor(const char *); 2318 int pf_keth_anchor_setup(struct pf_keth_rule *, 2319 const struct pf_keth_ruleset *, const char *); 2320 int pf_keth_anchor_nvcopyout( 2321 const struct pf_keth_ruleset *, 2322 const struct pf_keth_rule *, nvlist_t *); 2323 struct pf_keth_ruleset *pf_find_or_create_keth_ruleset(const char *); 2324 void pf_keth_anchor_remove(struct pf_keth_rule *); 2325 2326 void pf_krule_free(struct pf_krule *); 2327 #endif 2328 2329 /* The fingerprint functions can be linked into userland programs (tcpdump) */ 2330 int pf_osfp_add(struct pf_osfp_ioctl *); 2331 #ifdef _KERNEL 2332 struct pf_osfp_enlist * 2333 pf_osfp_fingerprint(struct pf_pdesc *, struct mbuf *, int, 2334 const struct tcphdr *); 2335 #endif /* _KERNEL */ 2336 void pf_osfp_flush(void); 2337 int pf_osfp_get(struct pf_osfp_ioctl *); 2338 int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t); 2339 2340 #ifdef _KERNEL 2341 void pf_print_host(struct pf_addr *, u_int16_t, u_int8_t); 2342 2343 void pf_step_into_anchor(struct pf_kanchor_stackframe *, int *, 2344 struct pf_kruleset **, int, struct pf_krule **, 2345 struct pf_krule **, int *); 2346 int pf_step_out_of_anchor(struct pf_kanchor_stackframe *, int *, 2347 struct pf_kruleset **, int, struct pf_krule **, 2348 struct pf_krule **, int *); 2349 void pf_step_into_keth_anchor(struct pf_keth_anchor_stackframe *, 2350 int *, struct pf_keth_ruleset **, 2351 struct pf_keth_rule **, struct pf_keth_rule **, 2352 int *); 2353 int pf_step_out_of_keth_anchor(struct pf_keth_anchor_stackframe *, 2354 int *, struct pf_keth_ruleset **, 2355 struct pf_keth_rule **, struct pf_keth_rule **, 2356 int *); 2357 2358 int pf_map_addr(u_int8_t, struct pf_krule *, 2359 struct pf_addr *, struct pf_addr *, 2360 struct pf_addr *, struct pf_ksrc_node **); 2361 struct pf_krule *pf_get_translation(struct pf_pdesc *, struct mbuf *, 2362 int, int, struct pfi_kkif *, struct pf_ksrc_node **, 2363 struct pf_state_key **, struct pf_state_key **, 2364 struct pf_addr *, struct pf_addr *, 2365 uint16_t, uint16_t, struct pf_kanchor_stackframe *); 2366 2367 struct pf_state_key *pf_state_key_setup(struct pf_pdesc *, struct pf_addr *, 2368 struct pf_addr *, u_int16_t, u_int16_t); 2369 struct pf_state_key *pf_state_key_clone(struct pf_state_key *); 2370 2371 struct pfi_kkif *pf_kkif_create(int); 2372 void pf_kkif_free(struct pfi_kkif *); 2373 void pf_kkif_zero(struct pfi_kkif *); 2374 #endif /* _KERNEL */ 2375 2376 #endif /* _NET_PFVAR_H_ */ 2377