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 extern struct rmlock pf_rules_lock; 389 #define PF_RULES_RLOCK_TRACKER struct rm_priotracker _pf_rules_tracker 390 #define PF_RULES_RLOCK() rm_rlock(&pf_rules_lock, &_pf_rules_tracker) 391 #define PF_RULES_RUNLOCK() rm_runlock(&pf_rules_lock, &_pf_rules_tracker) 392 #define PF_RULES_WLOCK() rm_wlock(&pf_rules_lock) 393 #define PF_RULES_WUNLOCK() rm_wunlock(&pf_rules_lock) 394 #define PF_RULES_WOWNED() rm_wowned(&pf_rules_lock) 395 #define PF_RULES_ASSERT() rm_assert(&pf_rules_lock, RA_LOCKED) 396 #define PF_RULES_RASSERT() rm_assert(&pf_rules_lock, RA_RLOCKED) 397 #define PF_RULES_WASSERT() rm_assert(&pf_rules_lock, RA_WLOCKED) 398 399 extern struct mtx_padalign pf_table_stats_lock; 400 #define PF_TABLE_STATS_LOCK() mtx_lock(&pf_table_stats_lock) 401 #define PF_TABLE_STATS_UNLOCK() mtx_unlock(&pf_table_stats_lock) 402 #define PF_TABLE_STATS_OWNED() mtx_owned(&pf_table_stats_lock) 403 #define PF_TABLE_STATS_ASSERT() mtx_assert(&pf_rules_lock, MA_OWNED) 404 405 extern struct sx pf_end_lock; 406 407 #define PF_MODVER 1 408 #define PFLOG_MODVER 1 409 #define PFSYNC_MODVER 1 410 411 #define PFLOG_MINVER 1 412 #define PFLOG_PREFVER PFLOG_MODVER 413 #define PFLOG_MAXVER 1 414 #define PFSYNC_MINVER 1 415 #define PFSYNC_PREFVER PFSYNC_MODVER 416 #define PFSYNC_MAXVER 1 417 418 #ifdef INET 419 #ifndef INET6 420 #define PF_INET_ONLY 421 #endif /* ! INET6 */ 422 #endif /* INET */ 423 424 #ifdef INET6 425 #ifndef INET 426 #define PF_INET6_ONLY 427 #endif /* ! INET */ 428 #endif /* INET6 */ 429 430 #ifdef INET 431 #ifdef INET6 432 #define PF_INET_INET6 433 #endif /* INET6 */ 434 #endif /* INET */ 435 436 #else 437 438 #define PF_INET_INET6 439 440 #endif /* _KERNEL */ 441 442 /* Both IPv4 and IPv6 */ 443 #ifdef PF_INET_INET6 444 445 #define PF_AEQ(a, b, c) \ 446 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \ 447 (c == AF_INET6 && (a)->addr32[3] == (b)->addr32[3] && \ 448 (a)->addr32[2] == (b)->addr32[2] && \ 449 (a)->addr32[1] == (b)->addr32[1] && \ 450 (a)->addr32[0] == (b)->addr32[0])) \ 451 452 #define PF_ANEQ(a, b, c) \ 453 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \ 454 (c == AF_INET6 && ((a)->addr32[0] != (b)->addr32[0] || \ 455 (a)->addr32[1] != (b)->addr32[1] || \ 456 (a)->addr32[2] != (b)->addr32[2] || \ 457 (a)->addr32[3] != (b)->addr32[3]))) \ 458 459 #define PF_AZERO(a, c) \ 460 ((c == AF_INET && !(a)->addr32[0]) || \ 461 (c == AF_INET6 && !(a)->addr32[0] && !(a)->addr32[1] && \ 462 !(a)->addr32[2] && !(a)->addr32[3] )) \ 463 464 #define PF_MATCHA(n, a, m, b, f) \ 465 pf_match_addr(n, a, m, b, f) 466 467 #define PF_ACPY(a, b, f) \ 468 pf_addrcpy(a, b, f) 469 470 #define PF_AINC(a, f) \ 471 pf_addr_inc(a, f) 472 473 #define PF_POOLMASK(a, b, c, d, f) \ 474 pf_poolmask(a, b, c, d, f) 475 476 #else 477 478 /* Just IPv6 */ 479 480 #ifdef PF_INET6_ONLY 481 482 #define PF_AEQ(a, b, c) \ 483 ((a)->addr32[3] == (b)->addr32[3] && \ 484 (a)->addr32[2] == (b)->addr32[2] && \ 485 (a)->addr32[1] == (b)->addr32[1] && \ 486 (a)->addr32[0] == (b)->addr32[0]) \ 487 488 #define PF_ANEQ(a, b, c) \ 489 ((a)->addr32[3] != (b)->addr32[3] || \ 490 (a)->addr32[2] != (b)->addr32[2] || \ 491 (a)->addr32[1] != (b)->addr32[1] || \ 492 (a)->addr32[0] != (b)->addr32[0]) \ 493 494 #define PF_AZERO(a, c) \ 495 (!(a)->addr32[0] && \ 496 !(a)->addr32[1] && \ 497 !(a)->addr32[2] && \ 498 !(a)->addr32[3] ) \ 499 500 #define PF_MATCHA(n, a, m, b, f) \ 501 pf_match_addr(n, a, m, b, f) 502 503 #define PF_ACPY(a, b, f) \ 504 pf_addrcpy(a, b, f) 505 506 #define PF_AINC(a, f) \ 507 pf_addr_inc(a, f) 508 509 #define PF_POOLMASK(a, b, c, d, f) \ 510 pf_poolmask(a, b, c, d, f) 511 512 #else 513 514 /* Just IPv4 */ 515 #ifdef PF_INET_ONLY 516 517 #define PF_AEQ(a, b, c) \ 518 ((a)->addr32[0] == (b)->addr32[0]) 519 520 #define PF_ANEQ(a, b, c) \ 521 ((a)->addr32[0] != (b)->addr32[0]) 522 523 #define PF_AZERO(a, c) \ 524 (!(a)->addr32[0]) 525 526 #define PF_MATCHA(n, a, m, b, f) \ 527 pf_match_addr(n, a, m, b, f) 528 529 #define PF_ACPY(a, b, f) \ 530 (a)->v4.s_addr = (b)->v4.s_addr 531 532 #define PF_AINC(a, f) \ 533 do { \ 534 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \ 535 } while (0) 536 537 #define PF_POOLMASK(a, b, c, d, f) \ 538 do { \ 539 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \ 540 (((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \ 541 } while (0) 542 543 #endif /* PF_INET_ONLY */ 544 #endif /* PF_INET6_ONLY */ 545 #endif /* PF_INET_INET6 */ 546 547 /* 548 * XXX callers not FIB-aware in our version of pf yet. 549 * OpenBSD fixed it later it seems, 2010/05/07 13:33:16 claudio. 550 */ 551 #define PF_MISMATCHAW(aw, x, af, neg, ifp, rtid) \ 552 ( \ 553 (((aw)->type == PF_ADDR_NOROUTE && \ 554 pf_routable((x), (af), NULL, (rtid))) || \ 555 (((aw)->type == PF_ADDR_URPFFAILED && (ifp) != NULL && \ 556 pf_routable((x), (af), (ifp), (rtid))) || \ 557 ((aw)->type == PF_ADDR_TABLE && \ 558 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \ 559 ((aw)->type == PF_ADDR_DYNIFTL && \ 560 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \ 561 ((aw)->type == PF_ADDR_RANGE && \ 562 !pf_match_addr_range(&(aw)->v.a.addr, \ 563 &(aw)->v.a.mask, (x), (af))) || \ 564 ((aw)->type == PF_ADDR_ADDRMASK && \ 565 !PF_AZERO(&(aw)->v.a.mask, (af)) && \ 566 !PF_MATCHA(0, &(aw)->v.a.addr, \ 567 &(aw)->v.a.mask, (x), (af))))) != \ 568 (neg) \ 569 ) 570 571 #define PF_ALGNMNT(off) (((off) % 2) == 0) 572 573 #ifdef _KERNEL 574 575 struct pf_kpooladdr { 576 struct pf_addr_wrap addr; 577 TAILQ_ENTRY(pf_kpooladdr) entries; 578 char ifname[IFNAMSIZ]; 579 struct pfi_kkif *kif; 580 }; 581 582 TAILQ_HEAD(pf_kpalist, pf_kpooladdr); 583 584 struct pf_kpool { 585 struct mtx mtx; 586 struct pf_kpalist list; 587 struct pf_kpooladdr *cur; 588 struct pf_poolhashkey key; 589 struct pf_addr counter; 590 struct pf_mape_portset mape; 591 int tblidx; 592 u_int16_t proxy_port[2]; 593 u_int8_t opts; 594 }; 595 596 struct pf_rule_actions { 597 int rtableid; 598 uint16_t qid; 599 uint16_t pqid; 600 uint16_t max_mss; 601 uint8_t log; 602 uint8_t set_tos; 603 uint8_t min_ttl; 604 uint16_t dnpipe; 605 uint16_t dnrpipe; /* Reverse direction pipe */ 606 uint32_t flags; 607 }; 608 609 union pf_keth_rule_ptr { 610 struct pf_keth_rule *ptr; 611 uint32_t nr; 612 }; 613 614 struct pf_keth_rule_addr { 615 uint8_t addr[ETHER_ADDR_LEN]; 616 uint8_t mask[ETHER_ADDR_LEN]; 617 bool neg; 618 uint8_t isset; 619 }; 620 621 struct pf_keth_anchor; 622 623 TAILQ_HEAD(pf_keth_ruleq, pf_keth_rule); 624 625 struct pf_keth_ruleset { 626 struct pf_keth_ruleq rules[2]; 627 struct pf_keth_rules { 628 struct pf_keth_ruleq *rules; 629 int open; 630 uint32_t ticket; 631 } active, inactive; 632 struct epoch_context epoch_ctx; 633 struct vnet *vnet; 634 struct pf_keth_anchor *anchor; 635 }; 636 637 RB_HEAD(pf_keth_anchor_global, pf_keth_anchor); 638 RB_HEAD(pf_keth_anchor_node, pf_keth_anchor); 639 struct pf_keth_anchor { 640 RB_ENTRY(pf_keth_anchor) entry_node; 641 RB_ENTRY(pf_keth_anchor) entry_global; 642 struct pf_keth_anchor *parent; 643 struct pf_keth_anchor_node children; 644 char name[PF_ANCHOR_NAME_SIZE]; 645 char path[MAXPATHLEN]; 646 struct pf_keth_ruleset ruleset; 647 int refcnt; /* anchor rules */ 648 uint8_t anchor_relative; 649 uint8_t anchor_wildcard; 650 }; 651 RB_PROTOTYPE(pf_keth_anchor_node, pf_keth_anchor, entry_node, 652 pf_keth_anchor_compare); 653 RB_PROTOTYPE(pf_keth_anchor_global, pf_keth_anchor, entry_global, 654 pf_keth_anchor_compare); 655 656 struct pf_keth_rule { 657 #define PFE_SKIP_IFP 0 658 #define PFE_SKIP_DIR 1 659 #define PFE_SKIP_PROTO 2 660 #define PFE_SKIP_SRC_ADDR 3 661 #define PFE_SKIP_DST_ADDR 4 662 #define PFE_SKIP_COUNT 5 663 union pf_keth_rule_ptr skip[PFE_SKIP_COUNT]; 664 665 TAILQ_ENTRY(pf_keth_rule) entries; 666 667 struct pf_keth_anchor *anchor; 668 u_int8_t anchor_relative; 669 u_int8_t anchor_wildcard; 670 671 uint32_t nr; 672 673 bool quick; 674 675 /* Filter */ 676 char ifname[IFNAMSIZ]; 677 struct pfi_kkif *kif; 678 bool ifnot; 679 uint8_t direction; 680 uint16_t proto; 681 struct pf_keth_rule_addr src, dst; 682 struct pf_rule_addr ipsrc, ipdst; 683 char match_tagname[PF_TAG_NAME_SIZE]; 684 uint16_t match_tag; 685 bool match_tag_not; 686 687 688 /* Stats */ 689 counter_u64_t evaluations; 690 counter_u64_t packets[2]; 691 counter_u64_t bytes[2]; 692 time_t *timestamp; 693 694 /* Action */ 695 char qname[PF_QNAME_SIZE]; 696 int qid; 697 char tagname[PF_TAG_NAME_SIZE]; 698 uint16_t tag; 699 char bridge_to_name[IFNAMSIZ]; 700 struct pfi_kkif *bridge_to; 701 uint8_t action; 702 uint16_t dnpipe; 703 uint32_t dnflags; 704 }; 705 706 union pf_krule_ptr { 707 struct pf_krule *ptr; 708 u_int32_t nr; 709 }; 710 711 RB_HEAD(pf_krule_global, pf_krule); 712 RB_PROTOTYPE(pf_krule_global, pf_krule, entry_global, pf_krule_compare); 713 714 struct pf_krule { 715 struct pf_rule_addr src; 716 struct pf_rule_addr dst; 717 union pf_krule_ptr skip[PF_SKIP_COUNT]; 718 char label[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE]; 719 uint32_t ridentifier; 720 char ifname[IFNAMSIZ]; 721 char qname[PF_QNAME_SIZE]; 722 char pqname[PF_QNAME_SIZE]; 723 char tagname[PF_TAG_NAME_SIZE]; 724 char match_tagname[PF_TAG_NAME_SIZE]; 725 726 char overload_tblname[PF_TABLE_NAME_SIZE]; 727 728 TAILQ_ENTRY(pf_krule) entries; 729 struct pf_kpool rpool; 730 731 struct pf_counter_u64 evaluations; 732 struct pf_counter_u64 packets[2]; 733 struct pf_counter_u64 bytes[2]; 734 time_t *timestamp; 735 736 struct pfi_kkif *kif; 737 struct pf_kanchor *anchor; 738 struct pfr_ktable *overload_tbl; 739 740 pf_osfp_t os_fingerprint; 741 742 int rtableid; 743 u_int32_t timeout[PFTM_MAX]; 744 u_int32_t max_states; 745 u_int32_t max_src_nodes; 746 u_int32_t max_src_states; 747 u_int32_t max_src_conn; 748 struct { 749 u_int32_t limit; 750 u_int32_t seconds; 751 } max_src_conn_rate; 752 u_int16_t qid; 753 u_int16_t pqid; 754 u_int16_t dnpipe; 755 u_int16_t dnrpipe; 756 u_int32_t free_flags; 757 u_int32_t nr; 758 u_int32_t prob; 759 uid_t cuid; 760 pid_t cpid; 761 762 counter_u64_t states_cur; 763 counter_u64_t states_tot; 764 counter_u64_t src_nodes; 765 766 u_int16_t return_icmp; 767 u_int16_t return_icmp6; 768 u_int16_t max_mss; 769 u_int16_t tag; 770 u_int16_t match_tag; 771 u_int16_t scrub_flags; 772 773 struct pf_rule_uid uid; 774 struct pf_rule_gid gid; 775 776 u_int32_t rule_flag; 777 uint32_t rule_ref; 778 u_int8_t action; 779 u_int8_t direction; 780 u_int8_t log; 781 u_int8_t logif; 782 u_int8_t quick; 783 u_int8_t ifnot; 784 u_int8_t match_tag_not; 785 u_int8_t natpass; 786 787 u_int8_t keep_state; 788 sa_family_t af; 789 u_int8_t proto; 790 u_int8_t type; 791 u_int8_t code; 792 u_int8_t flags; 793 u_int8_t flagset; 794 u_int8_t min_ttl; 795 u_int8_t allow_opts; 796 u_int8_t rt; 797 u_int8_t return_ttl; 798 u_int8_t tos; 799 u_int8_t set_tos; 800 u_int8_t anchor_relative; 801 u_int8_t anchor_wildcard; 802 803 u_int8_t flush; 804 u_int8_t prio; 805 u_int8_t set_prio[2]; 806 807 struct { 808 struct pf_addr addr; 809 u_int16_t port; 810 } divert; 811 u_int8_t md5sum[PF_MD5_DIGEST_LENGTH]; 812 RB_ENTRY(pf_krule) entry_global; 813 814 #ifdef PF_WANT_32_TO_64_COUNTER 815 LIST_ENTRY(pf_krule) allrulelist; 816 bool allrulelinked; 817 #endif 818 }; 819 820 struct pf_krule_item { 821 SLIST_ENTRY(pf_krule_item) entry; 822 struct pf_krule *r; 823 }; 824 825 SLIST_HEAD(pf_krule_slist, pf_krule_item); 826 827 struct pf_ksrc_node { 828 LIST_ENTRY(pf_ksrc_node) entry; 829 struct pf_addr addr; 830 struct pf_addr raddr; 831 struct pf_krule_slist match_rules; 832 union pf_krule_ptr rule; 833 struct pfi_kkif *kif; 834 counter_u64_t bytes[2]; 835 counter_u64_t packets[2]; 836 u_int32_t states; 837 u_int32_t conn; 838 struct pf_threshold conn_rate; 839 u_int32_t creation; 840 u_int32_t expire; 841 sa_family_t af; 842 u_int8_t ruletype; 843 }; 844 #endif 845 846 struct pf_state_scrub { 847 struct timeval pfss_last; /* time received last packet */ 848 u_int32_t pfss_tsecr; /* last echoed timestamp */ 849 u_int32_t pfss_tsval; /* largest timestamp */ 850 u_int32_t pfss_tsval0; /* original timestamp */ 851 u_int16_t pfss_flags; 852 #define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */ 853 #define PFSS_PAWS 0x0010 /* stricter PAWS checks */ 854 #define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */ 855 #define PFSS_DATA_TS 0x0040 /* timestamp on data packets */ 856 #define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */ 857 u_int8_t pfss_ttl; /* stashed TTL */ 858 u_int8_t pad; 859 u_int32_t pfss_ts_mod; /* timestamp modulation */ 860 }; 861 862 struct pf_state_host { 863 struct pf_addr addr; 864 u_int16_t port; 865 u_int16_t pad; 866 }; 867 868 struct pf_state_peer { 869 struct pf_state_scrub *scrub; /* state is scrubbed */ 870 u_int32_t seqlo; /* Max sequence number sent */ 871 u_int32_t seqhi; /* Max the other end ACKd + win */ 872 u_int32_t seqdiff; /* Sequence number modulator */ 873 u_int16_t max_win; /* largest window (pre scaling) */ 874 u_int16_t mss; /* Maximum segment size option */ 875 u_int8_t state; /* active state level */ 876 u_int8_t wscale; /* window scaling factor */ 877 u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */ 878 u_int8_t pad[1]; 879 }; 880 881 /* Keep synced with struct pf_state_key. */ 882 struct pf_state_key_cmp { 883 struct pf_addr addr[2]; 884 u_int16_t port[2]; 885 sa_family_t af; 886 u_int8_t proto; 887 u_int8_t pad[2]; 888 }; 889 890 struct pf_state_key { 891 struct pf_addr addr[2]; 892 u_int16_t port[2]; 893 sa_family_t af; 894 u_int8_t proto; 895 u_int8_t pad[2]; 896 897 LIST_ENTRY(pf_state_key) entry; 898 TAILQ_HEAD(, pf_kstate) states[2]; 899 }; 900 901 /* Keep synced with struct pf_kstate. */ 902 struct pf_state_cmp { 903 u_int64_t id; 904 u_int32_t creatorid; 905 u_int8_t direction; 906 u_int8_t pad[3]; 907 }; 908 909 struct pf_state_scrub_export { 910 uint16_t pfss_flags; 911 uint8_t pfss_ttl; /* stashed TTL */ 912 #define PF_SCRUB_FLAG_VALID 0x01 913 uint8_t scrub_flag; 914 uint32_t pfss_ts_mod; /* timestamp modulation */ 915 }; 916 917 struct pf_state_key_export { 918 struct pf_addr addr[2]; 919 uint16_t port[2]; 920 }; 921 922 struct pf_state_peer_export { 923 struct pf_state_scrub_export scrub; /* state is scrubbed */ 924 uint32_t seqlo; /* Max sequence number sent */ 925 uint32_t seqhi; /* Max the other end ACKd + win */ 926 uint32_t seqdiff; /* Sequence number modulator */ 927 uint16_t max_win; /* largest window (pre scaling) */ 928 uint16_t mss; /* Maximum segment size option */ 929 uint8_t state; /* active state level */ 930 uint8_t wscale; /* window scaling factor */ 931 uint8_t dummy[6]; 932 }; 933 _Static_assert(sizeof(struct pf_state_peer_export) == 32, "size incorrect"); 934 935 struct pf_state_export { 936 uint64_t version; 937 #define PF_STATE_VERSION 20210706 938 uint64_t id; 939 char ifname[IFNAMSIZ]; 940 char orig_ifname[IFNAMSIZ]; 941 struct pf_state_key_export key[2]; 942 struct pf_state_peer_export src; 943 struct pf_state_peer_export dst; 944 struct pf_addr rt_addr; 945 uint32_t rule; 946 uint32_t anchor; 947 uint32_t nat_rule; 948 uint32_t creation; 949 uint32_t expire; 950 uint32_t spare0; 951 uint64_t packets[2]; 952 uint64_t bytes[2]; 953 uint32_t creatorid; 954 uint32_t spare1; 955 sa_family_t af; 956 uint8_t proto; 957 uint8_t direction; 958 uint8_t log; 959 uint8_t state_flags_compat; 960 uint8_t timeout; 961 uint8_t sync_flags; 962 uint8_t updates; 963 uint16_t state_flags; 964 965 uint8_t spare[110]; 966 }; 967 _Static_assert(sizeof(struct pf_state_export) == 384, "size incorrect"); 968 969 #ifdef _KERNEL 970 struct pf_kstate { 971 /* 972 * Area shared with pf_state_cmp 973 */ 974 u_int64_t id; 975 u_int32_t creatorid; 976 u_int8_t direction; 977 u_int8_t pad[3]; 978 /* 979 * end of the area 980 */ 981 982 u_int16_t state_flags; 983 u_int8_t timeout; 984 u_int8_t sync_state; /* PFSYNC_S_x */ 985 u_int8_t sync_updates; /* XXX */ 986 u_int refs; 987 struct mtx *lock; 988 TAILQ_ENTRY(pf_kstate) sync_list; 989 TAILQ_ENTRY(pf_kstate) key_list[2]; 990 LIST_ENTRY(pf_kstate) entry; 991 struct pf_state_peer src; 992 struct pf_state_peer dst; 993 struct pf_krule_slist match_rules; 994 union pf_krule_ptr rule; 995 union pf_krule_ptr anchor; 996 union pf_krule_ptr nat_rule; 997 struct pf_addr rt_addr; 998 struct pf_state_key *key[2]; /* addresses stack and wire */ 999 struct pfi_kkif *kif; 1000 struct pfi_kkif *orig_kif; /* The real kif, even if we're a floating state (i.e. if == V_pfi_all). */ 1001 struct pfi_kkif *rt_kif; 1002 struct pf_ksrc_node *src_node; 1003 struct pf_ksrc_node *nat_src_node; 1004 u_int64_t packets[2]; 1005 u_int64_t bytes[2]; 1006 u_int32_t creation; 1007 u_int32_t expire; 1008 u_int32_t pfsync_time; 1009 u_int16_t qid; 1010 u_int16_t pqid; 1011 u_int16_t dnpipe; 1012 u_int16_t dnrpipe; 1013 u_int16_t tag; 1014 u_int8_t log; 1015 int rtableid; 1016 u_int8_t min_ttl; 1017 u_int8_t set_tos; 1018 u_int16_t max_mss; 1019 }; 1020 1021 /* 1022 * Size <= fits 12 objects per page on LP64. Try to not grow the struct beyond that. 1023 */ 1024 _Static_assert(sizeof(struct pf_kstate) <= 336, "pf_kstate size crosses 336 bytes"); 1025 #endif 1026 1027 /* 1028 * Unified state structures for pulling states out of the kernel 1029 * used by pfsync(4) and the pf(4) ioctl. 1030 */ 1031 struct pfsync_state_scrub { 1032 u_int16_t pfss_flags; 1033 u_int8_t pfss_ttl; /* stashed TTL */ 1034 #define PFSYNC_SCRUB_FLAG_VALID 0x01 1035 u_int8_t scrub_flag; 1036 u_int32_t pfss_ts_mod; /* timestamp modulation */ 1037 } __packed; 1038 1039 struct pfsync_state_peer { 1040 struct pfsync_state_scrub scrub; /* state is scrubbed */ 1041 u_int32_t seqlo; /* Max sequence number sent */ 1042 u_int32_t seqhi; /* Max the other end ACKd + win */ 1043 u_int32_t seqdiff; /* Sequence number modulator */ 1044 u_int16_t max_win; /* largest window (pre scaling) */ 1045 u_int16_t mss; /* Maximum segment size option */ 1046 u_int8_t state; /* active state level */ 1047 u_int8_t wscale; /* window scaling factor */ 1048 u_int8_t pad[6]; 1049 } __packed; 1050 1051 struct pfsync_state_key { 1052 struct pf_addr addr[2]; 1053 u_int16_t port[2]; 1054 }; 1055 1056 struct pfsync_state { 1057 u_int64_t id; 1058 char ifname[IFNAMSIZ]; 1059 struct pfsync_state_key key[2]; 1060 struct pfsync_state_peer src; 1061 struct pfsync_state_peer dst; 1062 struct pf_addr rt_addr; 1063 u_int32_t rule; 1064 u_int32_t anchor; 1065 u_int32_t nat_rule; 1066 u_int32_t creation; 1067 u_int32_t expire; 1068 u_int32_t packets[2][2]; 1069 u_int32_t bytes[2][2]; 1070 u_int32_t creatorid; 1071 sa_family_t af; 1072 u_int8_t proto; 1073 u_int8_t direction; 1074 u_int16_t state_flags; 1075 u_int8_t log; 1076 u_int8_t state_flags_compat; 1077 u_int8_t timeout; 1078 u_int8_t sync_flags; 1079 u_int8_t updates; 1080 } __packed; 1081 1082 #ifdef _KERNEL 1083 /* pfsync */ 1084 typedef int pfsync_state_import_t(struct pfsync_state *, int); 1085 typedef void pfsync_insert_state_t(struct pf_kstate *); 1086 typedef void pfsync_update_state_t(struct pf_kstate *); 1087 typedef void pfsync_delete_state_t(struct pf_kstate *); 1088 typedef void pfsync_clear_states_t(u_int32_t, const char *); 1089 typedef int pfsync_defer_t(struct pf_kstate *, struct mbuf *); 1090 typedef void pfsync_detach_ifnet_t(struct ifnet *); 1091 1092 VNET_DECLARE(pfsync_state_import_t *, pfsync_state_import_ptr); 1093 #define V_pfsync_state_import_ptr VNET(pfsync_state_import_ptr) 1094 VNET_DECLARE(pfsync_insert_state_t *, pfsync_insert_state_ptr); 1095 #define V_pfsync_insert_state_ptr VNET(pfsync_insert_state_ptr) 1096 VNET_DECLARE(pfsync_update_state_t *, pfsync_update_state_ptr); 1097 #define V_pfsync_update_state_ptr VNET(pfsync_update_state_ptr) 1098 VNET_DECLARE(pfsync_delete_state_t *, pfsync_delete_state_ptr); 1099 #define V_pfsync_delete_state_ptr VNET(pfsync_delete_state_ptr) 1100 VNET_DECLARE(pfsync_clear_states_t *, pfsync_clear_states_ptr); 1101 #define V_pfsync_clear_states_ptr VNET(pfsync_clear_states_ptr) 1102 VNET_DECLARE(pfsync_defer_t *, pfsync_defer_ptr); 1103 #define V_pfsync_defer_ptr VNET(pfsync_defer_ptr) 1104 extern pfsync_detach_ifnet_t *pfsync_detach_ifnet_ptr; 1105 1106 void pfsync_state_export(struct pfsync_state *, 1107 struct pf_kstate *); 1108 void pf_state_export(struct pf_state_export *, 1109 struct pf_kstate *); 1110 1111 /* pflog */ 1112 struct pf_kruleset; 1113 struct pf_pdesc; 1114 typedef int pflog_packet_t(struct pfi_kkif *, struct mbuf *, sa_family_t, 1115 u_int8_t, u_int8_t, struct pf_krule *, struct pf_krule *, 1116 struct pf_kruleset *, struct pf_pdesc *, int); 1117 extern pflog_packet_t *pflog_packet_ptr; 1118 1119 #endif /* _KERNEL */ 1120 1121 #define PFSYNC_FLAG_SRCNODE 0x04 1122 #define PFSYNC_FLAG_NATSRCNODE 0x08 1123 1124 /* for copies to/from network byte order */ 1125 /* ioctl interface also uses network byte order */ 1126 #define pf_state_peer_hton(s,d) do { \ 1127 (d)->seqlo = htonl((s)->seqlo); \ 1128 (d)->seqhi = htonl((s)->seqhi); \ 1129 (d)->seqdiff = htonl((s)->seqdiff); \ 1130 (d)->max_win = htons((s)->max_win); \ 1131 (d)->mss = htons((s)->mss); \ 1132 (d)->state = (s)->state; \ 1133 (d)->wscale = (s)->wscale; \ 1134 if ((s)->scrub) { \ 1135 (d)->scrub.pfss_flags = \ 1136 htons((s)->scrub->pfss_flags & PFSS_TIMESTAMP); \ 1137 (d)->scrub.pfss_ttl = (s)->scrub->pfss_ttl; \ 1138 (d)->scrub.pfss_ts_mod = htonl((s)->scrub->pfss_ts_mod);\ 1139 (d)->scrub.scrub_flag = PFSYNC_SCRUB_FLAG_VALID; \ 1140 } \ 1141 } while (0) 1142 1143 #define pf_state_peer_ntoh(s,d) do { \ 1144 (d)->seqlo = ntohl((s)->seqlo); \ 1145 (d)->seqhi = ntohl((s)->seqhi); \ 1146 (d)->seqdiff = ntohl((s)->seqdiff); \ 1147 (d)->max_win = ntohs((s)->max_win); \ 1148 (d)->mss = ntohs((s)->mss); \ 1149 (d)->state = (s)->state; \ 1150 (d)->wscale = (s)->wscale; \ 1151 if ((s)->scrub.scrub_flag == PFSYNC_SCRUB_FLAG_VALID && \ 1152 (d)->scrub != NULL) { \ 1153 (d)->scrub->pfss_flags = \ 1154 ntohs((s)->scrub.pfss_flags) & PFSS_TIMESTAMP; \ 1155 (d)->scrub->pfss_ttl = (s)->scrub.pfss_ttl; \ 1156 (d)->scrub->pfss_ts_mod = ntohl((s)->scrub.pfss_ts_mod);\ 1157 } \ 1158 } while (0) 1159 1160 #define pf_state_counter_hton(s,d) do { \ 1161 d[0] = htonl((s>>32)&0xffffffff); \ 1162 d[1] = htonl(s&0xffffffff); \ 1163 } while (0) 1164 1165 #define pf_state_counter_from_pfsync(s) \ 1166 (((u_int64_t)(s[0])<<32) | (u_int64_t)(s[1])) 1167 1168 #define pf_state_counter_ntoh(s,d) do { \ 1169 d = ntohl(s[0]); \ 1170 d = d<<32; \ 1171 d += ntohl(s[1]); \ 1172 } while (0) 1173 1174 TAILQ_HEAD(pf_krulequeue, pf_krule); 1175 1176 struct pf_kanchor; 1177 1178 struct pf_kruleset { 1179 struct { 1180 struct pf_krulequeue queues[2]; 1181 struct { 1182 struct pf_krulequeue *ptr; 1183 struct pf_krule **ptr_array; 1184 u_int32_t rcount; 1185 u_int32_t ticket; 1186 int open; 1187 struct pf_krule_global *tree; 1188 } active, inactive; 1189 } rules[PF_RULESET_MAX]; 1190 struct pf_kanchor *anchor; 1191 u_int32_t tticket; 1192 int tables; 1193 int topen; 1194 }; 1195 1196 RB_HEAD(pf_kanchor_global, pf_kanchor); 1197 RB_HEAD(pf_kanchor_node, pf_kanchor); 1198 struct pf_kanchor { 1199 RB_ENTRY(pf_kanchor) entry_global; 1200 RB_ENTRY(pf_kanchor) entry_node; 1201 struct pf_kanchor *parent; 1202 struct pf_kanchor_node children; 1203 char name[PF_ANCHOR_NAME_SIZE]; 1204 char path[MAXPATHLEN]; 1205 struct pf_kruleset ruleset; 1206 int refcnt; /* anchor rules */ 1207 }; 1208 RB_PROTOTYPE(pf_kanchor_global, pf_kanchor, entry_global, pf_anchor_compare); 1209 RB_PROTOTYPE(pf_kanchor_node, pf_kanchor, entry_node, pf_kanchor_compare); 1210 1211 #define PF_RESERVED_ANCHOR "_pf" 1212 1213 #define PFR_TFLAG_PERSIST 0x00000001 1214 #define PFR_TFLAG_CONST 0x00000002 1215 #define PFR_TFLAG_ACTIVE 0x00000004 1216 #define PFR_TFLAG_INACTIVE 0x00000008 1217 #define PFR_TFLAG_REFERENCED 0x00000010 1218 #define PFR_TFLAG_REFDANCHOR 0x00000020 1219 #define PFR_TFLAG_COUNTERS 0x00000040 1220 /* Adjust masks below when adding flags. */ 1221 #define PFR_TFLAG_USRMASK (PFR_TFLAG_PERSIST | \ 1222 PFR_TFLAG_CONST | \ 1223 PFR_TFLAG_COUNTERS) 1224 #define PFR_TFLAG_SETMASK (PFR_TFLAG_ACTIVE | \ 1225 PFR_TFLAG_INACTIVE | \ 1226 PFR_TFLAG_REFERENCED | \ 1227 PFR_TFLAG_REFDANCHOR) 1228 #define PFR_TFLAG_ALLMASK (PFR_TFLAG_PERSIST | \ 1229 PFR_TFLAG_CONST | \ 1230 PFR_TFLAG_ACTIVE | \ 1231 PFR_TFLAG_INACTIVE | \ 1232 PFR_TFLAG_REFERENCED | \ 1233 PFR_TFLAG_REFDANCHOR | \ 1234 PFR_TFLAG_COUNTERS) 1235 1236 struct pf_kanchor_stackframe; 1237 struct pf_keth_anchor_stackframe; 1238 1239 struct pfr_table { 1240 char pfrt_anchor[MAXPATHLEN]; 1241 char pfrt_name[PF_TABLE_NAME_SIZE]; 1242 u_int32_t pfrt_flags; 1243 u_int8_t pfrt_fback; 1244 }; 1245 1246 enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED, 1247 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE, 1248 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_NOCOUNT, PFR_FB_MAX }; 1249 1250 struct pfr_addr { 1251 union { 1252 struct in_addr _pfra_ip4addr; 1253 struct in6_addr _pfra_ip6addr; 1254 } pfra_u; 1255 u_int8_t pfra_af; 1256 u_int8_t pfra_net; 1257 u_int8_t pfra_not; 1258 u_int8_t pfra_fback; 1259 }; 1260 #define pfra_ip4addr pfra_u._pfra_ip4addr 1261 #define pfra_ip6addr pfra_u._pfra_ip6addr 1262 1263 enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX }; 1264 enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX }; 1265 enum { PFR_TYPE_PACKETS, PFR_TYPE_BYTES, PFR_TYPE_MAX }; 1266 #define PFR_NUM_COUNTERS (PFR_DIR_MAX * PFR_OP_ADDR_MAX * PFR_TYPE_MAX) 1267 #define PFR_OP_XPASS PFR_OP_ADDR_MAX 1268 1269 struct pfr_astats { 1270 struct pfr_addr pfras_a; 1271 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1272 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1273 long pfras_tzero; 1274 }; 1275 1276 enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX }; 1277 1278 struct pfr_tstats { 1279 struct pfr_table pfrts_t; 1280 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1281 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1282 u_int64_t pfrts_match; 1283 u_int64_t pfrts_nomatch; 1284 long pfrts_tzero; 1285 int pfrts_cnt; 1286 int pfrts_refcnt[PFR_REFCNT_MAX]; 1287 }; 1288 1289 #ifdef _KERNEL 1290 1291 struct pfr_kstate_counter { 1292 counter_u64_t pkc_pcpu; 1293 u_int64_t pkc_zero; 1294 }; 1295 1296 static inline int 1297 pfr_kstate_counter_init(struct pfr_kstate_counter *pfrc, int flags) 1298 { 1299 1300 pfrc->pkc_zero = 0; 1301 pfrc->pkc_pcpu = counter_u64_alloc(flags); 1302 if (pfrc->pkc_pcpu == NULL) 1303 return (ENOMEM); 1304 return (0); 1305 } 1306 1307 static inline void 1308 pfr_kstate_counter_deinit(struct pfr_kstate_counter *pfrc) 1309 { 1310 1311 counter_u64_free(pfrc->pkc_pcpu); 1312 } 1313 1314 static inline u_int64_t 1315 pfr_kstate_counter_fetch(struct pfr_kstate_counter *pfrc) 1316 { 1317 u_int64_t c; 1318 1319 c = counter_u64_fetch(pfrc->pkc_pcpu); 1320 c -= pfrc->pkc_zero; 1321 return (c); 1322 } 1323 1324 static inline void 1325 pfr_kstate_counter_zero(struct pfr_kstate_counter *pfrc) 1326 { 1327 u_int64_t c; 1328 1329 c = counter_u64_fetch(pfrc->pkc_pcpu); 1330 pfrc->pkc_zero = c; 1331 } 1332 1333 static inline void 1334 pfr_kstate_counter_add(struct pfr_kstate_counter *pfrc, int64_t n) 1335 { 1336 1337 counter_u64_add(pfrc->pkc_pcpu, n); 1338 } 1339 1340 struct pfr_ktstats { 1341 struct pfr_table pfrts_t; 1342 struct pfr_kstate_counter pfrkts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1343 struct pfr_kstate_counter pfrkts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1344 struct pfr_kstate_counter pfrkts_match; 1345 struct pfr_kstate_counter pfrkts_nomatch; 1346 long pfrkts_tzero; 1347 int pfrkts_cnt; 1348 int pfrkts_refcnt[PFR_REFCNT_MAX]; 1349 }; 1350 1351 #endif /* _KERNEL */ 1352 1353 #define pfrts_name pfrts_t.pfrt_name 1354 #define pfrts_flags pfrts_t.pfrt_flags 1355 1356 #ifndef _SOCKADDR_UNION_DEFINED 1357 #define _SOCKADDR_UNION_DEFINED 1358 union sockaddr_union { 1359 struct sockaddr sa; 1360 struct sockaddr_in sin; 1361 struct sockaddr_in6 sin6; 1362 }; 1363 #endif /* _SOCKADDR_UNION_DEFINED */ 1364 1365 struct pfr_kcounters { 1366 counter_u64_t pfrkc_counters; 1367 long pfrkc_tzero; 1368 }; 1369 #define pfr_kentry_counter(kc, dir, op, t) \ 1370 ((kc)->pfrkc_counters + \ 1371 (dir) * PFR_OP_ADDR_MAX * PFR_TYPE_MAX + (op) * PFR_TYPE_MAX + (t)) 1372 1373 #ifdef _KERNEL 1374 SLIST_HEAD(pfr_kentryworkq, pfr_kentry); 1375 struct pfr_kentry { 1376 struct radix_node pfrke_node[2]; 1377 union sockaddr_union pfrke_sa; 1378 SLIST_ENTRY(pfr_kentry) pfrke_workq; 1379 struct pfr_kcounters pfrke_counters; 1380 u_int8_t pfrke_af; 1381 u_int8_t pfrke_net; 1382 u_int8_t pfrke_not; 1383 u_int8_t pfrke_mark; 1384 }; 1385 1386 SLIST_HEAD(pfr_ktableworkq, pfr_ktable); 1387 RB_HEAD(pfr_ktablehead, pfr_ktable); 1388 struct pfr_ktable { 1389 struct pfr_ktstats pfrkt_kts; 1390 RB_ENTRY(pfr_ktable) pfrkt_tree; 1391 SLIST_ENTRY(pfr_ktable) pfrkt_workq; 1392 struct radix_node_head *pfrkt_ip4; 1393 struct radix_node_head *pfrkt_ip6; 1394 struct pfr_ktable *pfrkt_shadow; 1395 struct pfr_ktable *pfrkt_root; 1396 struct pf_kruleset *pfrkt_rs; 1397 long pfrkt_larg; 1398 int pfrkt_nflags; 1399 }; 1400 #define pfrkt_t pfrkt_kts.pfrts_t 1401 #define pfrkt_name pfrkt_t.pfrt_name 1402 #define pfrkt_anchor pfrkt_t.pfrt_anchor 1403 #define pfrkt_ruleset pfrkt_t.pfrt_ruleset 1404 #define pfrkt_flags pfrkt_t.pfrt_flags 1405 #define pfrkt_cnt pfrkt_kts.pfrkts_cnt 1406 #define pfrkt_refcnt pfrkt_kts.pfrkts_refcnt 1407 #define pfrkt_packets pfrkt_kts.pfrkts_packets 1408 #define pfrkt_bytes pfrkt_kts.pfrkts_bytes 1409 #define pfrkt_match pfrkt_kts.pfrkts_match 1410 #define pfrkt_nomatch pfrkt_kts.pfrkts_nomatch 1411 #define pfrkt_tzero pfrkt_kts.pfrkts_tzero 1412 #endif 1413 1414 #ifdef _KERNEL 1415 struct pfi_kkif { 1416 char pfik_name[IFNAMSIZ]; 1417 union { 1418 RB_ENTRY(pfi_kkif) _pfik_tree; 1419 LIST_ENTRY(pfi_kkif) _pfik_list; 1420 } _pfik_glue; 1421 #define pfik_tree _pfik_glue._pfik_tree 1422 #define pfik_list _pfik_glue._pfik_list 1423 struct pf_counter_u64 pfik_packets[2][2][2]; 1424 struct pf_counter_u64 pfik_bytes[2][2][2]; 1425 u_int32_t pfik_tzero; 1426 u_int pfik_flags; 1427 struct ifnet *pfik_ifp; 1428 struct ifg_group *pfik_group; 1429 u_int pfik_rulerefs; 1430 TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs; 1431 #ifdef PF_WANT_32_TO_64_COUNTER 1432 LIST_ENTRY(pfi_kkif) pfik_allkiflist; 1433 #endif 1434 }; 1435 #endif 1436 1437 #define PFI_IFLAG_REFS 0x0001 /* has state references */ 1438 #define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */ 1439 1440 #ifdef _KERNEL 1441 struct pf_pdesc { 1442 struct { 1443 int done; 1444 uid_t uid; 1445 gid_t gid; 1446 } lookup; 1447 u_int64_t tot_len; /* Make Mickey money */ 1448 union pf_headers { 1449 struct tcphdr tcp; 1450 struct udphdr udp; 1451 struct icmp icmp; 1452 #ifdef INET6 1453 struct icmp6_hdr icmp6; 1454 #endif /* INET6 */ 1455 char any[0]; 1456 } hdr; 1457 1458 struct pf_krule *nat_rule; /* nat/rdr rule applied to packet */ 1459 struct pf_addr *src; /* src address */ 1460 struct pf_addr *dst; /* dst address */ 1461 u_int16_t *sport; 1462 u_int16_t *dport; 1463 struct pf_mtag *pf_mtag; 1464 struct pf_rule_actions act; 1465 1466 u_int32_t p_len; /* total length of payload */ 1467 1468 u_int16_t *ip_sum; 1469 u_int16_t *proto_sum; 1470 u_int16_t flags; /* Let SCRUB trigger behavior in 1471 * state code. Easier than tags */ 1472 #define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */ 1473 #define PFDESC_IP_REAS 0x0002 /* IP frags would've been reassembled */ 1474 sa_family_t af; 1475 u_int8_t proto; 1476 u_int8_t tos; 1477 u_int8_t dir; /* direction */ 1478 u_int8_t sidx; /* key index for source */ 1479 u_int8_t didx; /* key index for destination */ 1480 }; 1481 #endif 1482 1483 /* flags for RDR options */ 1484 #define PF_DPORT_RANGE 0x01 /* Dest port uses range */ 1485 #define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */ 1486 1487 /* UDP state enumeration */ 1488 #define PFUDPS_NO_TRAFFIC 0 1489 #define PFUDPS_SINGLE 1 1490 #define PFUDPS_MULTIPLE 2 1491 1492 #define PFUDPS_NSTATES 3 /* number of state levels */ 1493 1494 #define PFUDPS_NAMES { \ 1495 "NO_TRAFFIC", \ 1496 "SINGLE", \ 1497 "MULTIPLE", \ 1498 NULL \ 1499 } 1500 1501 /* Other protocol state enumeration */ 1502 #define PFOTHERS_NO_TRAFFIC 0 1503 #define PFOTHERS_SINGLE 1 1504 #define PFOTHERS_MULTIPLE 2 1505 1506 #define PFOTHERS_NSTATES 3 /* number of state levels */ 1507 1508 #define PFOTHERS_NAMES { \ 1509 "NO_TRAFFIC", \ 1510 "SINGLE", \ 1511 "MULTIPLE", \ 1512 NULL \ 1513 } 1514 1515 #define ACTION_SET(a, x) \ 1516 do { \ 1517 if ((a) != NULL) \ 1518 *(a) = (x); \ 1519 } while (0) 1520 1521 #define REASON_SET(a, x) \ 1522 do { \ 1523 if ((a) != NULL) \ 1524 *(a) = (x); \ 1525 if (x < PFRES_MAX) \ 1526 counter_u64_add(V_pf_status.counters[x], 1); \ 1527 } while (0) 1528 1529 enum pf_syncookies_mode { 1530 PF_SYNCOOKIES_NEVER = 0, 1531 PF_SYNCOOKIES_ALWAYS = 1, 1532 PF_SYNCOOKIES_ADAPTIVE = 2, 1533 PF_SYNCOOKIES_MODE_MAX = PF_SYNCOOKIES_ADAPTIVE 1534 }; 1535 1536 #define PF_SYNCOOKIES_HIWATPCT 25 1537 #define PF_SYNCOOKIES_LOWATPCT (PF_SYNCOOKIES_HIWATPCT / 2) 1538 1539 #ifdef _KERNEL 1540 struct pf_kstatus { 1541 counter_u64_t counters[PFRES_MAX]; /* reason for passing/dropping */ 1542 counter_u64_t lcounters[KLCNT_MAX]; /* limit counters */ 1543 struct pf_counter_u64 fcounters[FCNT_MAX]; /* state operation counters */ 1544 counter_u64_t scounters[SCNT_MAX]; /* src_node operation counters */ 1545 uint32_t states; 1546 uint32_t src_nodes; 1547 uint32_t running; 1548 uint32_t since; 1549 uint32_t debug; 1550 uint32_t hostid; 1551 char ifname[IFNAMSIZ]; 1552 uint8_t pf_chksum[PF_MD5_DIGEST_LENGTH]; 1553 bool keep_counters; 1554 enum pf_syncookies_mode syncookies_mode; 1555 bool syncookies_active; 1556 uint64_t syncookies_inflight[2]; 1557 uint32_t states_halfopen; 1558 uint32_t reass; 1559 }; 1560 #endif 1561 1562 struct pf_divert { 1563 union { 1564 struct in_addr ipv4; 1565 struct in6_addr ipv6; 1566 } addr; 1567 u_int16_t port; 1568 }; 1569 1570 #define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */ 1571 #define PFR_KENTRY_HIWAT 200000 /* Number of table entries */ 1572 1573 /* 1574 * Limit the length of the fragment queue traversal. Remember 1575 * search entry points based on the fragment offset. 1576 */ 1577 #define PF_FRAG_ENTRY_POINTS 16 1578 1579 /* 1580 * The number of entries in the fragment queue must be limited 1581 * to avoid DoS by linear searching. Instead of a global limit, 1582 * use a limit per entry point. For large packets these sum up. 1583 */ 1584 #define PF_FRAG_ENTRY_LIMIT 64 1585 1586 /* 1587 * ioctl parameter structures 1588 */ 1589 1590 struct pfioc_pooladdr { 1591 u_int32_t action; 1592 u_int32_t ticket; 1593 u_int32_t nr; 1594 u_int32_t r_num; 1595 u_int8_t r_action; 1596 u_int8_t r_last; 1597 u_int8_t af; 1598 char anchor[MAXPATHLEN]; 1599 struct pf_pooladdr addr; 1600 }; 1601 1602 struct pfioc_rule { 1603 u_int32_t action; 1604 u_int32_t ticket; 1605 u_int32_t pool_ticket; 1606 u_int32_t nr; 1607 char anchor[MAXPATHLEN]; 1608 char anchor_call[MAXPATHLEN]; 1609 struct pf_rule rule; 1610 }; 1611 1612 struct pfioc_natlook { 1613 struct pf_addr saddr; 1614 struct pf_addr daddr; 1615 struct pf_addr rsaddr; 1616 struct pf_addr rdaddr; 1617 u_int16_t sport; 1618 u_int16_t dport; 1619 u_int16_t rsport; 1620 u_int16_t rdport; 1621 sa_family_t af; 1622 u_int8_t proto; 1623 u_int8_t direction; 1624 }; 1625 1626 struct pfioc_state { 1627 struct pfsync_state state; 1628 }; 1629 1630 struct pfioc_src_node_kill { 1631 sa_family_t psnk_af; 1632 struct pf_rule_addr psnk_src; 1633 struct pf_rule_addr psnk_dst; 1634 u_int psnk_killed; 1635 }; 1636 1637 #ifdef _KERNEL 1638 struct pf_kstate_kill { 1639 struct pf_state_cmp psk_pfcmp; 1640 sa_family_t psk_af; 1641 int psk_proto; 1642 struct pf_rule_addr psk_src; 1643 struct pf_rule_addr psk_dst; 1644 struct pf_rule_addr psk_rt_addr; 1645 char psk_ifname[IFNAMSIZ]; 1646 char psk_label[PF_RULE_LABEL_SIZE]; 1647 u_int psk_killed; 1648 bool psk_kill_match; 1649 }; 1650 #endif 1651 1652 struct pfioc_state_kill { 1653 struct pf_state_cmp psk_pfcmp; 1654 sa_family_t psk_af; 1655 int psk_proto; 1656 struct pf_rule_addr psk_src; 1657 struct pf_rule_addr psk_dst; 1658 char psk_ifname[IFNAMSIZ]; 1659 char psk_label[PF_RULE_LABEL_SIZE]; 1660 u_int psk_killed; 1661 }; 1662 1663 struct pfioc_states { 1664 int ps_len; 1665 union { 1666 caddr_t psu_buf; 1667 struct pfsync_state *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_states_v2 { 1674 int ps_len; 1675 uint64_t ps_req_version; 1676 union { 1677 caddr_t psu_buf; 1678 struct pf_state_export *psu_states; 1679 } ps_u; 1680 #define ps_buf ps_u.psu_buf 1681 #define ps_states ps_u.psu_states 1682 }; 1683 1684 struct pfioc_src_nodes { 1685 int psn_len; 1686 union { 1687 caddr_t psu_buf; 1688 struct pf_src_node *psu_src_nodes; 1689 } psn_u; 1690 #define psn_buf psn_u.psu_buf 1691 #define psn_src_nodes psn_u.psu_src_nodes 1692 }; 1693 1694 struct pfioc_if { 1695 char ifname[IFNAMSIZ]; 1696 }; 1697 1698 struct pfioc_tm { 1699 int timeout; 1700 int seconds; 1701 }; 1702 1703 struct pfioc_limit { 1704 int index; 1705 unsigned limit; 1706 }; 1707 1708 struct pfioc_altq_v0 { 1709 u_int32_t action; 1710 u_int32_t ticket; 1711 u_int32_t nr; 1712 struct pf_altq_v0 altq; 1713 }; 1714 1715 struct pfioc_altq_v1 { 1716 u_int32_t action; 1717 u_int32_t ticket; 1718 u_int32_t nr; 1719 /* 1720 * Placed here so code that only uses the above parameters can be 1721 * written entirely in terms of the v0 or v1 type. 1722 */ 1723 u_int32_t version; 1724 struct pf_altq_v1 altq; 1725 }; 1726 1727 /* 1728 * Latest version of struct pfioc_altq_vX. This must move in lock-step with 1729 * the latest version of struct pf_altq_vX as it has that struct as a 1730 * member. 1731 */ 1732 #define PFIOC_ALTQ_VERSION PF_ALTQ_VERSION 1733 1734 struct pfioc_qstats_v0 { 1735 u_int32_t ticket; 1736 u_int32_t nr; 1737 void *buf; 1738 int nbytes; 1739 u_int8_t scheduler; 1740 }; 1741 1742 struct pfioc_qstats_v1 { 1743 u_int32_t ticket; 1744 u_int32_t nr; 1745 void *buf; 1746 int nbytes; 1747 u_int8_t scheduler; 1748 /* 1749 * Placed here so code that only uses the above parameters can be 1750 * written entirely in terms of the v0 or v1 type. 1751 */ 1752 u_int32_t version; /* Requested version of stats struct */ 1753 }; 1754 1755 /* Latest version of struct pfioc_qstats_vX */ 1756 #define PFIOC_QSTATS_VERSION 1 1757 1758 struct pfioc_ruleset { 1759 u_int32_t nr; 1760 char path[MAXPATHLEN]; 1761 char name[PF_ANCHOR_NAME_SIZE]; 1762 }; 1763 1764 #define PF_RULESET_ALTQ (PF_RULESET_MAX) 1765 #define PF_RULESET_TABLE (PF_RULESET_MAX+1) 1766 #define PF_RULESET_ETH (PF_RULESET_MAX+2) 1767 struct pfioc_trans { 1768 int size; /* number of elements */ 1769 int esize; /* size of each element in bytes */ 1770 struct pfioc_trans_e { 1771 int rs_num; 1772 char anchor[MAXPATHLEN]; 1773 u_int32_t ticket; 1774 } *array; 1775 }; 1776 1777 #define PFR_FLAG_ATOMIC 0x00000001 /* unused */ 1778 #define PFR_FLAG_DUMMY 0x00000002 1779 #define PFR_FLAG_FEEDBACK 0x00000004 1780 #define PFR_FLAG_CLSTATS 0x00000008 1781 #define PFR_FLAG_ADDRSTOO 0x00000010 1782 #define PFR_FLAG_REPLACE 0x00000020 1783 #define PFR_FLAG_ALLRSETS 0x00000040 1784 #define PFR_FLAG_ALLMASK 0x0000007F 1785 #ifdef _KERNEL 1786 #define PFR_FLAG_USERIOCTL 0x10000000 1787 #endif 1788 1789 struct pfioc_table { 1790 struct pfr_table pfrio_table; 1791 void *pfrio_buffer; 1792 int pfrio_esize; 1793 int pfrio_size; 1794 int pfrio_size2; 1795 int pfrio_nadd; 1796 int pfrio_ndel; 1797 int pfrio_nchange; 1798 int pfrio_flags; 1799 u_int32_t pfrio_ticket; 1800 }; 1801 #define pfrio_exists pfrio_nadd 1802 #define pfrio_nzero pfrio_nadd 1803 #define pfrio_nmatch pfrio_nadd 1804 #define pfrio_naddr pfrio_size2 1805 #define pfrio_setflag pfrio_size2 1806 #define pfrio_clrflag pfrio_nadd 1807 1808 struct pfioc_iface { 1809 char pfiio_name[IFNAMSIZ]; 1810 void *pfiio_buffer; 1811 int pfiio_esize; 1812 int pfiio_size; 1813 int pfiio_nzero; 1814 int pfiio_flags; 1815 }; 1816 1817 /* 1818 * ioctl operations 1819 */ 1820 1821 #define DIOCSTART _IO ('D', 1) 1822 #define DIOCSTOP _IO ('D', 2) 1823 #define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule) 1824 #define DIOCADDRULENV _IOWR('D', 4, struct pfioc_nv) 1825 #define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule) 1826 #define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule) 1827 #define DIOCGETRULENV _IOWR('D', 7, struct pfioc_nv) 1828 /* XXX cut 8 - 17 */ 1829 #define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill) 1830 #define DIOCCLRSTATESNV _IOWR('D', 18, struct pfioc_nv) 1831 #define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state) 1832 #define DIOCGETSTATENV _IOWR('D', 19, struct pfioc_nv) 1833 #define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if) 1834 #define DIOCGETSTATUS _IOWR('D', 21, struct pf_status) 1835 #define DIOCGETSTATUSNV _IOWR('D', 21, struct pfioc_nv) 1836 #define DIOCCLRSTATUS _IO ('D', 22) 1837 #define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook) 1838 #define DIOCSETDEBUG _IOWR('D', 24, u_int32_t) 1839 #define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states) 1840 #define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule) 1841 /* XXX cut 26 - 28 */ 1842 #define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm) 1843 #define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm) 1844 #define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state) 1845 #define DIOCCLRRULECTRS _IO ('D', 38) 1846 #define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit) 1847 #define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit) 1848 #define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill) 1849 #define DIOCKILLSTATESNV _IOWR('D', 41, struct pfioc_nv) 1850 #define DIOCSTARTALTQ _IO ('D', 42) 1851 #define DIOCSTOPALTQ _IO ('D', 43) 1852 #define DIOCADDALTQV0 _IOWR('D', 45, struct pfioc_altq_v0) 1853 #define DIOCADDALTQV1 _IOWR('D', 45, struct pfioc_altq_v1) 1854 #define DIOCGETALTQSV0 _IOWR('D', 47, struct pfioc_altq_v0) 1855 #define DIOCGETALTQSV1 _IOWR('D', 47, struct pfioc_altq_v1) 1856 #define DIOCGETALTQV0 _IOWR('D', 48, struct pfioc_altq_v0) 1857 #define DIOCGETALTQV1 _IOWR('D', 48, struct pfioc_altq_v1) 1858 #define DIOCCHANGEALTQV0 _IOWR('D', 49, struct pfioc_altq_v0) 1859 #define DIOCCHANGEALTQV1 _IOWR('D', 49, struct pfioc_altq_v1) 1860 #define DIOCGETQSTATSV0 _IOWR('D', 50, struct pfioc_qstats_v0) 1861 #define DIOCGETQSTATSV1 _IOWR('D', 50, struct pfioc_qstats_v1) 1862 #define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr) 1863 #define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr) 1864 #define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr) 1865 #define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr) 1866 #define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr) 1867 /* XXX cut 55 - 57 */ 1868 #define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset) 1869 #define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset) 1870 #define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table) 1871 #define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table) 1872 #define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table) 1873 #define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table) 1874 #define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table) 1875 #define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table) 1876 #define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table) 1877 #define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table) 1878 #define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table) 1879 #define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table) 1880 #define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table) 1881 #define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table) 1882 #define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table) 1883 #define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table) 1884 #define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table) 1885 #define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table) 1886 #define DIOCOSFPFLUSH _IO('D', 78) 1887 #define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl) 1888 #define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl) 1889 #define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans) 1890 #define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans) 1891 #define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans) 1892 #define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes) 1893 #define DIOCCLRSRCNODES _IO('D', 85) 1894 #define DIOCSETHOSTID _IOWR('D', 86, u_int32_t) 1895 #define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface) 1896 #define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface) 1897 #define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface) 1898 #define DIOCKILLSRCNODES _IOWR('D', 91, struct pfioc_src_node_kill) 1899 #define DIOCGIFSPEEDV0 _IOWR('D', 92, struct pf_ifspeed_v0) 1900 #define DIOCGIFSPEEDV1 _IOWR('D', 92, struct pf_ifspeed_v1) 1901 #define DIOCGETSTATESV2 _IOWR('D', 93, struct pfioc_states_v2) 1902 #define DIOCGETSYNCOOKIES _IOWR('D', 94, struct pfioc_nv) 1903 #define DIOCSETSYNCOOKIES _IOWR('D', 95, struct pfioc_nv) 1904 #define DIOCKEEPCOUNTERS _IOWR('D', 96, struct pfioc_nv) 1905 #define DIOCKEEPCOUNTERS_FREEBSD13 _IOWR('D', 92, struct pfioc_nv) 1906 #define DIOCADDETHRULE _IOWR('D', 97, struct pfioc_nv) 1907 #define DIOCGETETHRULE _IOWR('D', 98, struct pfioc_nv) 1908 #define DIOCGETETHRULES _IOWR('D', 99, struct pfioc_nv) 1909 #define DIOCGETETHRULESETS _IOWR('D', 100, struct pfioc_nv) 1910 #define DIOCGETETHRULESET _IOWR('D', 101, struct pfioc_nv) 1911 #define DIOCSETREASS _IOWR('D', 102, u_int32_t) 1912 1913 struct pf_ifspeed_v0 { 1914 char ifname[IFNAMSIZ]; 1915 u_int32_t baudrate; 1916 }; 1917 1918 struct pf_ifspeed_v1 { 1919 char ifname[IFNAMSIZ]; 1920 u_int32_t baudrate32; 1921 /* layout identical to struct pf_ifspeed_v0 up to this point */ 1922 u_int64_t baudrate; 1923 }; 1924 1925 /* Latest version of struct pf_ifspeed_vX */ 1926 #define PF_IFSPEED_VERSION 1 1927 1928 /* 1929 * Compatibility and convenience macros 1930 */ 1931 #ifndef _KERNEL 1932 #ifdef PFIOC_USE_LATEST 1933 /* 1934 * Maintaining in-tree consumers of the ioctl interface is easier when that 1935 * code can be written in terms old names that refer to the latest interface 1936 * version as that reduces the required changes in the consumers to those 1937 * that are functionally necessary to accommodate a new interface version. 1938 */ 1939 #define pfioc_altq __CONCAT(pfioc_altq_v, PFIOC_ALTQ_VERSION) 1940 #define pfioc_qstats __CONCAT(pfioc_qstats_v, PFIOC_QSTATS_VERSION) 1941 #define pf_ifspeed __CONCAT(pf_ifspeed_v, PF_IFSPEED_VERSION) 1942 1943 #define DIOCADDALTQ __CONCAT(DIOCADDALTQV, PFIOC_ALTQ_VERSION) 1944 #define DIOCGETALTQS __CONCAT(DIOCGETALTQSV, PFIOC_ALTQ_VERSION) 1945 #define DIOCGETALTQ __CONCAT(DIOCGETALTQV, PFIOC_ALTQ_VERSION) 1946 #define DIOCCHANGEALTQ __CONCAT(DIOCCHANGEALTQV, PFIOC_ALTQ_VERSION) 1947 #define DIOCGETQSTATS __CONCAT(DIOCGETQSTATSV, PFIOC_QSTATS_VERSION) 1948 #define DIOCGIFSPEED __CONCAT(DIOCGIFSPEEDV, PF_IFSPEED_VERSION) 1949 #else 1950 /* 1951 * When building out-of-tree code that is written for the old interface, 1952 * such as may exist in ports for example, resolve the old struct tags and 1953 * ioctl command names to the v0 versions. 1954 */ 1955 #define pfioc_altq __CONCAT(pfioc_altq_v, 0) 1956 #define pfioc_qstats __CONCAT(pfioc_qstats_v, 0) 1957 #define pf_ifspeed __CONCAT(pf_ifspeed_v, 0) 1958 1959 #define DIOCADDALTQ __CONCAT(DIOCADDALTQV, 0) 1960 #define DIOCGETALTQS __CONCAT(DIOCGETALTQSV, 0) 1961 #define DIOCGETALTQ __CONCAT(DIOCGETALTQV, 0) 1962 #define DIOCCHANGEALTQ __CONCAT(DIOCCHANGEALTQV, 0) 1963 #define DIOCGETQSTATS __CONCAT(DIOCGETQSTATSV, 0) 1964 #define DIOCGIFSPEED __CONCAT(DIOCGIFSPEEDV, 0) 1965 #endif /* PFIOC_USE_LATEST */ 1966 #endif /* _KERNEL */ 1967 1968 #ifdef _KERNEL 1969 LIST_HEAD(pf_ksrc_node_list, pf_ksrc_node); 1970 struct pf_srchash { 1971 struct pf_ksrc_node_list nodes; 1972 struct mtx lock; 1973 }; 1974 1975 struct pf_keyhash { 1976 LIST_HEAD(, pf_state_key) keys; 1977 struct mtx lock; 1978 }; 1979 1980 struct pf_idhash { 1981 LIST_HEAD(, pf_kstate) states; 1982 struct mtx lock; 1983 }; 1984 1985 extern u_long pf_ioctl_maxcount; 1986 extern u_long pf_hashmask; 1987 extern u_long pf_srchashmask; 1988 #define PF_HASHSIZ (131072) 1989 #define PF_SRCHASHSIZ (PF_HASHSIZ/4) 1990 VNET_DECLARE(struct pf_keyhash *, pf_keyhash); 1991 VNET_DECLARE(struct pf_idhash *, pf_idhash); 1992 #define V_pf_keyhash VNET(pf_keyhash) 1993 #define V_pf_idhash VNET(pf_idhash) 1994 VNET_DECLARE(struct pf_srchash *, pf_srchash); 1995 #define V_pf_srchash VNET(pf_srchash) 1996 1997 #define PF_IDHASH(s) (be64toh((s)->id) % (pf_hashmask + 1)) 1998 1999 VNET_DECLARE(void *, pf_swi_cookie); 2000 #define V_pf_swi_cookie VNET(pf_swi_cookie) 2001 VNET_DECLARE(struct intr_event *, pf_swi_ie); 2002 #define V_pf_swi_ie VNET(pf_swi_ie) 2003 2004 VNET_DECLARE(struct unrhdr64, pf_stateid); 2005 #define V_pf_stateid VNET(pf_stateid) 2006 2007 TAILQ_HEAD(pf_altqqueue, pf_altq); 2008 VNET_DECLARE(struct pf_altqqueue, pf_altqs[4]); 2009 #define V_pf_altqs VNET(pf_altqs) 2010 VNET_DECLARE(struct pf_kpalist, pf_pabuf); 2011 #define V_pf_pabuf VNET(pf_pabuf) 2012 2013 VNET_DECLARE(u_int32_t, ticket_altqs_active); 2014 #define V_ticket_altqs_active VNET(ticket_altqs_active) 2015 VNET_DECLARE(u_int32_t, ticket_altqs_inactive); 2016 #define V_ticket_altqs_inactive VNET(ticket_altqs_inactive) 2017 VNET_DECLARE(int, altqs_inactive_open); 2018 #define V_altqs_inactive_open VNET(altqs_inactive_open) 2019 VNET_DECLARE(u_int32_t, ticket_pabuf); 2020 #define V_ticket_pabuf VNET(ticket_pabuf) 2021 VNET_DECLARE(struct pf_altqqueue *, pf_altqs_active); 2022 #define V_pf_altqs_active VNET(pf_altqs_active) 2023 VNET_DECLARE(struct pf_altqqueue *, pf_altq_ifs_active); 2024 #define V_pf_altq_ifs_active VNET(pf_altq_ifs_active) 2025 VNET_DECLARE(struct pf_altqqueue *, pf_altqs_inactive); 2026 #define V_pf_altqs_inactive VNET(pf_altqs_inactive) 2027 VNET_DECLARE(struct pf_altqqueue *, pf_altq_ifs_inactive); 2028 #define V_pf_altq_ifs_inactive VNET(pf_altq_ifs_inactive) 2029 2030 VNET_DECLARE(struct pf_krulequeue, pf_unlinked_rules); 2031 #define V_pf_unlinked_rules VNET(pf_unlinked_rules) 2032 2033 #ifdef PF_WANT_32_TO_64_COUNTER 2034 LIST_HEAD(allkiflist_head, pfi_kkif); 2035 VNET_DECLARE(struct allkiflist_head, pf_allkiflist); 2036 #define V_pf_allkiflist VNET(pf_allkiflist) 2037 VNET_DECLARE(size_t, pf_allkifcount); 2038 #define V_pf_allkifcount VNET(pf_allkifcount) 2039 VNET_DECLARE(struct pfi_kkif *, pf_kifmarker); 2040 #define V_pf_kifmarker VNET(pf_kifmarker) 2041 2042 LIST_HEAD(allrulelist_head, pf_krule); 2043 VNET_DECLARE(struct allrulelist_head, pf_allrulelist); 2044 #define V_pf_allrulelist VNET(pf_allrulelist) 2045 VNET_DECLARE(size_t, pf_allrulecount); 2046 #define V_pf_allrulecount VNET(pf_allrulecount) 2047 VNET_DECLARE(struct pf_krule *, pf_rulemarker); 2048 #define V_pf_rulemarker VNET(pf_rulemarker) 2049 #endif 2050 2051 void pf_initialize(void); 2052 void pf_mtag_initialize(void); 2053 void pf_mtag_cleanup(void); 2054 void pf_cleanup(void); 2055 2056 struct pf_mtag *pf_get_mtag(struct mbuf *); 2057 2058 extern void pf_calc_skip_steps(struct pf_krulequeue *); 2059 #ifdef ALTQ 2060 extern void pf_altq_ifnet_event(struct ifnet *, int); 2061 #endif 2062 VNET_DECLARE(uma_zone_t, pf_state_z); 2063 #define V_pf_state_z VNET(pf_state_z) 2064 VNET_DECLARE(uma_zone_t, pf_state_key_z); 2065 #define V_pf_state_key_z VNET(pf_state_key_z) 2066 VNET_DECLARE(uma_zone_t, pf_state_scrub_z); 2067 #define V_pf_state_scrub_z VNET(pf_state_scrub_z) 2068 2069 extern void pf_purge_thread(void *); 2070 extern void pf_unload_vnet_purge(void); 2071 extern void pf_intr(void *); 2072 extern void pf_purge_expired_src_nodes(void); 2073 2074 extern int pf_unlink_state(struct pf_kstate *); 2075 extern int pf_state_insert(struct pfi_kkif *, 2076 struct pfi_kkif *, 2077 struct pf_state_key *, 2078 struct pf_state_key *, 2079 struct pf_kstate *); 2080 extern struct pf_kstate *pf_alloc_state(int); 2081 extern void pf_free_state(struct pf_kstate *); 2082 2083 static __inline void 2084 pf_ref_state(struct pf_kstate *s) 2085 { 2086 2087 refcount_acquire(&s->refs); 2088 } 2089 2090 static __inline int 2091 pf_release_state(struct pf_kstate *s) 2092 { 2093 2094 if (refcount_release(&s->refs)) { 2095 pf_free_state(s); 2096 return (1); 2097 } else 2098 return (0); 2099 } 2100 2101 static __inline int 2102 pf_release_staten(struct pf_kstate *s, u_int n) 2103 { 2104 2105 if (refcount_releasen(&s->refs, n)) { 2106 pf_free_state(s); 2107 return (1); 2108 } else 2109 return (0); 2110 } 2111 2112 extern struct pf_kstate *pf_find_state_byid(uint64_t, uint32_t); 2113 extern struct pf_kstate *pf_find_state_all(struct pf_state_key_cmp *, 2114 u_int, int *); 2115 extern bool pf_find_state_all_exists(struct pf_state_key_cmp *, 2116 u_int); 2117 extern struct pf_ksrc_node *pf_find_src_node(struct pf_addr *, 2118 struct pf_krule *, sa_family_t, int); 2119 extern void pf_unlink_src_node(struct pf_ksrc_node *); 2120 extern u_int pf_free_src_nodes(struct pf_ksrc_node_list *); 2121 extern void pf_print_state(struct pf_kstate *); 2122 extern void pf_print_flags(u_int8_t); 2123 extern u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t, 2124 u_int8_t); 2125 extern u_int16_t pf_proto_cksum_fixup(struct mbuf *, u_int16_t, 2126 u_int16_t, u_int16_t, u_int8_t); 2127 2128 VNET_DECLARE(struct ifnet *, sync_ifp); 2129 #define V_sync_ifp VNET(sync_ifp); 2130 VNET_DECLARE(struct pf_krule, pf_default_rule); 2131 #define V_pf_default_rule VNET(pf_default_rule) 2132 extern void pf_addrcpy(struct pf_addr *, struct pf_addr *, 2133 u_int8_t); 2134 void pf_free_rule(struct pf_krule *); 2135 2136 int pf_test_eth(int, int, struct ifnet *, struct mbuf **, struct inpcb *); 2137 #ifdef INET 2138 int pf_test(int, int, struct ifnet *, struct mbuf **, struct inpcb *); 2139 int pf_normalize_ip(struct mbuf **, int, struct pfi_kkif *, u_short *, 2140 struct pf_pdesc *); 2141 #endif /* INET */ 2142 2143 #ifdef INET6 2144 int pf_test6(int, int, struct ifnet *, struct mbuf **, struct inpcb *); 2145 int pf_normalize_ip6(struct mbuf **, int, struct pfi_kkif *, u_short *, 2146 struct pf_pdesc *); 2147 void pf_poolmask(struct pf_addr *, struct pf_addr*, 2148 struct pf_addr *, struct pf_addr *, u_int8_t); 2149 void pf_addr_inc(struct pf_addr *, sa_family_t); 2150 int pf_refragment6(struct ifnet *, struct mbuf **, struct m_tag *, bool); 2151 #endif /* INET6 */ 2152 2153 u_int32_t pf_new_isn(struct pf_kstate *); 2154 void *pf_pull_hdr(struct mbuf *, int, void *, int, u_short *, u_short *, 2155 sa_family_t); 2156 void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t); 2157 void pf_change_proto_a(struct mbuf *, void *, u_int16_t *, u_int32_t, 2158 u_int8_t); 2159 void pf_change_tcp_a(struct mbuf *, void *, u_int16_t *, u_int32_t); 2160 void pf_patch_16_unaligned(struct mbuf *, u_int16_t *, void *, u_int16_t, 2161 bool, u_int8_t); 2162 void pf_patch_32_unaligned(struct mbuf *, u_int16_t *, void *, u_int32_t, 2163 bool, u_int8_t); 2164 void pf_send_deferred_syn(struct pf_kstate *); 2165 int pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *, 2166 struct pf_addr *, sa_family_t); 2167 int pf_match_addr_range(struct pf_addr *, struct pf_addr *, 2168 struct pf_addr *, sa_family_t); 2169 int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t); 2170 2171 void pf_normalize_init(void); 2172 void pf_normalize_cleanup(void); 2173 int pf_normalize_tcp(int, struct pfi_kkif *, struct mbuf *, int, int, void *, 2174 struct pf_pdesc *); 2175 void pf_normalize_tcp_cleanup(struct pf_kstate *); 2176 int pf_normalize_tcp_init(struct mbuf *, int, struct pf_pdesc *, 2177 struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *); 2178 int pf_normalize_tcp_stateful(struct mbuf *, int, struct pf_pdesc *, 2179 u_short *, struct tcphdr *, struct pf_kstate *, 2180 struct pf_state_peer *, struct pf_state_peer *, int *); 2181 u_int32_t 2182 pf_state_expires(const struct pf_kstate *); 2183 void pf_purge_expired_fragments(void); 2184 void pf_purge_fragments(uint32_t); 2185 int pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kkif *, 2186 int); 2187 int pf_socket_lookup(int, struct pf_pdesc *, struct mbuf *); 2188 struct pf_state_key *pf_alloc_state_key(int); 2189 void pfr_initialize(void); 2190 void pfr_cleanup(void); 2191 int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t); 2192 void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t, 2193 u_int64_t, int, int, int); 2194 int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, sa_family_t); 2195 void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *); 2196 struct pfr_ktable * 2197 pfr_attach_table(struct pf_kruleset *, char *); 2198 struct pfr_ktable * 2199 pfr_eth_attach_table(struct pf_keth_ruleset *, char *); 2200 void pfr_detach_table(struct pfr_ktable *); 2201 int pfr_clr_tables(struct pfr_table *, int *, int); 2202 int pfr_add_tables(struct pfr_table *, int, int *, int); 2203 int pfr_del_tables(struct pfr_table *, int, int *, int); 2204 int pfr_table_count(struct pfr_table *, int); 2205 int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int); 2206 int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int); 2207 int pfr_clr_tstats(struct pfr_table *, int, int *, int); 2208 int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int); 2209 int pfr_clr_addrs(struct pfr_table *, int *, int); 2210 int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *, long); 2211 int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 2212 int); 2213 int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 2214 int); 2215 int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 2216 int *, int *, int *, int, u_int32_t); 2217 int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int); 2218 int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int); 2219 int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *, 2220 int); 2221 int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 2222 int); 2223 int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int); 2224 int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int); 2225 int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int); 2226 int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *, 2227 int *, u_int32_t, int); 2228 2229 MALLOC_DECLARE(PFI_MTYPE); 2230 VNET_DECLARE(struct pfi_kkif *, pfi_all); 2231 #define V_pfi_all VNET(pfi_all) 2232 2233 void pfi_initialize(void); 2234 void pfi_initialize_vnet(void); 2235 void pfi_cleanup(void); 2236 void pfi_cleanup_vnet(void); 2237 void pfi_kkif_ref(struct pfi_kkif *); 2238 void pfi_kkif_unref(struct pfi_kkif *); 2239 struct pfi_kkif *pfi_kkif_find(const char *); 2240 struct pfi_kkif *pfi_kkif_attach(struct pfi_kkif *, const char *); 2241 int pfi_kkif_match(struct pfi_kkif *, struct pfi_kkif *); 2242 void pfi_kkif_purge(void); 2243 int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *, 2244 sa_family_t); 2245 int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t); 2246 void pfi_dynaddr_remove(struct pfi_dynaddr *); 2247 void pfi_dynaddr_copyout(struct pf_addr_wrap *); 2248 void pfi_update_status(const char *, struct pf_status *); 2249 void pfi_get_ifaces(const char *, struct pfi_kif *, int *); 2250 int pfi_set_flags(const char *, int); 2251 int pfi_clear_flags(const char *, int); 2252 2253 int pf_match_tag(struct mbuf *, struct pf_krule *, int *, int); 2254 int pf_tag_packet(struct mbuf *, struct pf_pdesc *, int); 2255 int pf_addr_cmp(struct pf_addr *, struct pf_addr *, 2256 sa_family_t); 2257 2258 u_int16_t pf_get_mss(struct mbuf *, int, u_int16_t, sa_family_t); 2259 u_int8_t pf_get_wscale(struct mbuf *, int, u_int16_t, sa_family_t); 2260 struct mbuf *pf_build_tcp(const struct pf_krule *, sa_family_t, 2261 const struct pf_addr *, const struct pf_addr *, 2262 u_int16_t, u_int16_t, u_int32_t, u_int32_t, 2263 u_int8_t, u_int16_t, u_int16_t, u_int8_t, int, 2264 u_int16_t, int); 2265 void pf_send_tcp(const struct pf_krule *, sa_family_t, 2266 const struct pf_addr *, const struct pf_addr *, 2267 u_int16_t, u_int16_t, u_int32_t, u_int32_t, 2268 u_int8_t, u_int16_t, u_int16_t, u_int8_t, int, 2269 u_int16_t, int); 2270 2271 void pf_syncookies_init(void); 2272 void pf_syncookies_cleanup(void); 2273 int pf_get_syncookies(struct pfioc_nv *); 2274 int pf_set_syncookies(struct pfioc_nv *); 2275 int pf_synflood_check(struct pf_pdesc *); 2276 void pf_syncookie_send(struct mbuf *m, int off, 2277 struct pf_pdesc *); 2278 bool pf_syncookie_check(struct pf_pdesc *); 2279 u_int8_t pf_syncookie_validate(struct pf_pdesc *); 2280 struct mbuf * pf_syncookie_recreate_syn(uint8_t, int, 2281 struct pf_pdesc *); 2282 2283 VNET_DECLARE(struct pf_kstatus, pf_status); 2284 #define V_pf_status VNET(pf_status) 2285 2286 struct pf_limit { 2287 uma_zone_t zone; 2288 u_int limit; 2289 }; 2290 VNET_DECLARE(struct pf_limit, pf_limits[PF_LIMIT_MAX]); 2291 #define V_pf_limits VNET(pf_limits) 2292 2293 #endif /* _KERNEL */ 2294 2295 #ifdef _KERNEL 2296 VNET_DECLARE(struct pf_kanchor_global, pf_anchors); 2297 #define V_pf_anchors VNET(pf_anchors) 2298 VNET_DECLARE(struct pf_kanchor, pf_main_anchor); 2299 #define V_pf_main_anchor VNET(pf_main_anchor) 2300 VNET_DECLARE(struct pf_keth_anchor_global, pf_keth_anchors); 2301 #define V_pf_keth_anchors VNET(pf_keth_anchors) 2302 #define pf_main_ruleset V_pf_main_anchor.ruleset 2303 2304 VNET_DECLARE(struct pf_keth_anchor, pf_main_keth_anchor); 2305 #define V_pf_main_keth_anchor VNET(pf_main_keth_anchor) 2306 VNET_DECLARE(struct pf_keth_ruleset*, pf_keth); 2307 #define V_pf_keth VNET(pf_keth) 2308 2309 void pf_init_kruleset(struct pf_kruleset *); 2310 void pf_init_keth(struct pf_keth_ruleset *); 2311 int pf_kanchor_setup(struct pf_krule *, 2312 const struct pf_kruleset *, const char *); 2313 int pf_kanchor_nvcopyout(const struct pf_kruleset *, 2314 const struct pf_krule *, nvlist_t *); 2315 int pf_kanchor_copyout(const struct pf_kruleset *, 2316 const struct pf_krule *, struct pfioc_rule *); 2317 void pf_kanchor_remove(struct pf_krule *); 2318 void pf_remove_if_empty_kruleset(struct pf_kruleset *); 2319 struct pf_kruleset *pf_find_kruleset(const char *); 2320 struct pf_kruleset *pf_find_or_create_kruleset(const char *); 2321 void pf_rs_initialize(void); 2322 2323 2324 struct pf_krule *pf_krule_alloc(void); 2325 2326 void pf_remove_if_empty_keth_ruleset( 2327 struct pf_keth_ruleset *); 2328 struct pf_keth_ruleset *pf_find_keth_ruleset(const char *); 2329 struct pf_keth_anchor *pf_find_keth_anchor(const char *); 2330 int pf_keth_anchor_setup(struct pf_keth_rule *, 2331 const struct pf_keth_ruleset *, const char *); 2332 int pf_keth_anchor_nvcopyout( 2333 const struct pf_keth_ruleset *, 2334 const struct pf_keth_rule *, nvlist_t *); 2335 struct pf_keth_ruleset *pf_find_or_create_keth_ruleset(const char *); 2336 void pf_keth_anchor_remove(struct pf_keth_rule *); 2337 2338 void pf_krule_free(struct pf_krule *); 2339 #endif 2340 2341 /* The fingerprint functions can be linked into userland programs (tcpdump) */ 2342 int pf_osfp_add(struct pf_osfp_ioctl *); 2343 #ifdef _KERNEL 2344 struct pf_osfp_enlist * 2345 pf_osfp_fingerprint(struct pf_pdesc *, struct mbuf *, int, 2346 const struct tcphdr *); 2347 #endif /* _KERNEL */ 2348 void pf_osfp_flush(void); 2349 int pf_osfp_get(struct pf_osfp_ioctl *); 2350 int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t); 2351 2352 #ifdef _KERNEL 2353 void pf_print_host(struct pf_addr *, u_int16_t, u_int8_t); 2354 2355 void pf_step_into_anchor(struct pf_kanchor_stackframe *, int *, 2356 struct pf_kruleset **, int, struct pf_krule **, 2357 struct pf_krule **, int *); 2358 int pf_step_out_of_anchor(struct pf_kanchor_stackframe *, int *, 2359 struct pf_kruleset **, int, struct pf_krule **, 2360 struct pf_krule **, int *); 2361 void pf_step_into_keth_anchor(struct pf_keth_anchor_stackframe *, 2362 int *, struct pf_keth_ruleset **, 2363 struct pf_keth_rule **, struct pf_keth_rule **, 2364 int *); 2365 int pf_step_out_of_keth_anchor(struct pf_keth_anchor_stackframe *, 2366 int *, struct pf_keth_ruleset **, 2367 struct pf_keth_rule **, struct pf_keth_rule **, 2368 int *); 2369 2370 int pf_map_addr(u_int8_t, struct pf_krule *, 2371 struct pf_addr *, struct pf_addr *, 2372 struct pf_addr *, struct pf_ksrc_node **); 2373 struct pf_krule *pf_get_translation(struct pf_pdesc *, struct mbuf *, 2374 int, int, struct pfi_kkif *, struct pf_ksrc_node **, 2375 struct pf_state_key **, struct pf_state_key **, 2376 struct pf_addr *, struct pf_addr *, 2377 uint16_t, uint16_t, struct pf_kanchor_stackframe *); 2378 2379 struct pf_state_key *pf_state_key_setup(struct pf_pdesc *, struct pf_addr *, 2380 struct pf_addr *, u_int16_t, u_int16_t); 2381 struct pf_state_key *pf_state_key_clone(struct pf_state_key *); 2382 2383 int pf_normalize_mss(struct mbuf *m, int off, 2384 struct pf_pdesc *pd, u_int16_t maxmss); 2385 u_int16_t pf_rule_to_scrub_flags(u_int32_t); 2386 #ifdef INET 2387 void pf_scrub_ip(struct mbuf **, uint32_t, uint8_t, uint8_t); 2388 #endif /* INET */ 2389 #ifdef INET6 2390 void pf_scrub_ip6(struct mbuf **, uint32_t, uint8_t, uint8_t); 2391 #endif /* INET6 */ 2392 2393 struct pfi_kkif *pf_kkif_create(int); 2394 void pf_kkif_free(struct pfi_kkif *); 2395 void pf_kkif_zero(struct pfi_kkif *); 2396 #endif /* _KERNEL */ 2397 2398 #endif /* _NET_PFVAR_H_ */ 2399