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) 307 308 309 SYSCTL_DECL(_net_pf); 310 MALLOC_DECLARE(M_PFHASH); 311 312 SDT_PROVIDER_DECLARE(pf); 313 314 struct pfi_dynaddr { 315 TAILQ_ENTRY(pfi_dynaddr) entry; 316 struct pf_addr pfid_addr4; 317 struct pf_addr pfid_mask4; 318 struct pf_addr pfid_addr6; 319 struct pf_addr pfid_mask6; 320 struct pfr_ktable *pfid_kt; 321 struct pfi_kkif *pfid_kif; 322 int pfid_net; /* mask or 128 */ 323 int pfid_acnt4; /* address count IPv4 */ 324 int pfid_acnt6; /* address count IPv6 */ 325 sa_family_t pfid_af; /* rule af */ 326 u_int8_t pfid_iflags; /* PFI_AFLAG_* */ 327 }; 328 329 /* 330 * Address manipulation macros 331 */ 332 #define HTONL(x) (x) = htonl((__uint32_t)(x)) 333 #define HTONS(x) (x) = htons((__uint16_t)(x)) 334 #define NTOHL(x) (x) = ntohl((__uint32_t)(x)) 335 #define NTOHS(x) (x) = ntohs((__uint16_t)(x)) 336 337 #define PF_NAME "pf" 338 339 #define PF_HASHROW_ASSERT(h) mtx_assert(&(h)->lock, MA_OWNED) 340 #define PF_HASHROW_LOCK(h) mtx_lock(&(h)->lock) 341 #define PF_HASHROW_UNLOCK(h) mtx_unlock(&(h)->lock) 342 343 #ifdef INVARIANTS 344 #define PF_STATE_LOCK(s) \ 345 do { \ 346 struct pf_kstate *_s = (s); \ 347 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(_s)]; \ 348 MPASS(_s->lock == &_ih->lock); \ 349 mtx_lock(_s->lock); \ 350 } while (0) 351 #define PF_STATE_UNLOCK(s) \ 352 do { \ 353 struct pf_kstate *_s = (s); \ 354 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(_s)]; \ 355 MPASS(_s->lock == &_ih->lock); \ 356 mtx_unlock(_s->lock); \ 357 } while (0) 358 #else 359 #define PF_STATE_LOCK(s) mtx_lock(s->lock) 360 #define PF_STATE_UNLOCK(s) mtx_unlock(s->lock) 361 #endif 362 363 #ifdef INVARIANTS 364 #define PF_STATE_LOCK_ASSERT(s) \ 365 do { \ 366 struct pf_kstate *_s = (s); \ 367 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(_s)]; \ 368 MPASS(_s->lock == &_ih->lock); \ 369 PF_HASHROW_ASSERT(_ih); \ 370 } while (0) 371 #else /* !INVARIANTS */ 372 #define PF_STATE_LOCK_ASSERT(s) do {} while (0) 373 #endif /* INVARIANTS */ 374 375 extern struct mtx_padalign pf_unlnkdrules_mtx; 376 #define PF_UNLNKDRULES_LOCK() mtx_lock(&pf_unlnkdrules_mtx) 377 #define PF_UNLNKDRULES_UNLOCK() mtx_unlock(&pf_unlnkdrules_mtx) 378 #define PF_UNLNKDRULES_ASSERT() mtx_assert(&pf_unlnkdrules_mtx, MA_OWNED) 379 380 extern struct sx pf_config_lock; 381 #define PF_CONFIG_LOCK() sx_xlock(&pf_config_lock) 382 #define PF_CONFIG_UNLOCK() sx_xunlock(&pf_config_lock) 383 #define PF_CONFIG_ASSERT() sx_assert(&pf_config_lock, SA_XLOCKED) 384 385 extern struct rmlock pf_rules_lock; 386 #define PF_RULES_RLOCK_TRACKER struct rm_priotracker _pf_rules_tracker 387 #define PF_RULES_RLOCK() rm_rlock(&pf_rules_lock, &_pf_rules_tracker) 388 #define PF_RULES_RUNLOCK() rm_runlock(&pf_rules_lock, &_pf_rules_tracker) 389 #define PF_RULES_WLOCK() rm_wlock(&pf_rules_lock) 390 #define PF_RULES_WUNLOCK() rm_wunlock(&pf_rules_lock) 391 #define PF_RULES_WOWNED() rm_wowned(&pf_rules_lock) 392 #define PF_RULES_ASSERT() rm_assert(&pf_rules_lock, RA_LOCKED) 393 #define PF_RULES_RASSERT() rm_assert(&pf_rules_lock, RA_RLOCKED) 394 #define PF_RULES_WASSERT() rm_assert(&pf_rules_lock, RA_WLOCKED) 395 396 extern struct mtx_padalign pf_table_stats_lock; 397 #define PF_TABLE_STATS_LOCK() mtx_lock(&pf_table_stats_lock) 398 #define PF_TABLE_STATS_UNLOCK() mtx_unlock(&pf_table_stats_lock) 399 #define PF_TABLE_STATS_OWNED() mtx_owned(&pf_table_stats_lock) 400 #define PF_TABLE_STATS_ASSERT() mtx_assert(&pf_rules_lock, MA_OWNED) 401 402 extern struct sx pf_end_lock; 403 404 #define PF_MODVER 1 405 #define PFLOG_MODVER 1 406 #define PFSYNC_MODVER 1 407 408 #define PFLOG_MINVER 1 409 #define PFLOG_PREFVER PFLOG_MODVER 410 #define PFLOG_MAXVER 1 411 #define PFSYNC_MINVER 1 412 #define PFSYNC_PREFVER PFSYNC_MODVER 413 #define PFSYNC_MAXVER 1 414 415 #ifdef INET 416 #ifndef INET6 417 #define PF_INET_ONLY 418 #endif /* ! INET6 */ 419 #endif /* INET */ 420 421 #ifdef INET6 422 #ifndef INET 423 #define PF_INET6_ONLY 424 #endif /* ! INET */ 425 #endif /* INET6 */ 426 427 #ifdef INET 428 #ifdef INET6 429 #define PF_INET_INET6 430 #endif /* INET6 */ 431 #endif /* INET */ 432 433 #else 434 435 #define PF_INET_INET6 436 437 #endif /* _KERNEL */ 438 439 /* Both IPv4 and IPv6 */ 440 #ifdef PF_INET_INET6 441 442 #define PF_AEQ(a, b, c) \ 443 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \ 444 (c == AF_INET6 && (a)->addr32[3] == (b)->addr32[3] && \ 445 (a)->addr32[2] == (b)->addr32[2] && \ 446 (a)->addr32[1] == (b)->addr32[1] && \ 447 (a)->addr32[0] == (b)->addr32[0])) \ 448 449 #define PF_ANEQ(a, b, c) \ 450 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \ 451 (c == AF_INET6 && ((a)->addr32[0] != (b)->addr32[0] || \ 452 (a)->addr32[1] != (b)->addr32[1] || \ 453 (a)->addr32[2] != (b)->addr32[2] || \ 454 (a)->addr32[3] != (b)->addr32[3]))) \ 455 456 #define PF_AZERO(a, c) \ 457 ((c == AF_INET && !(a)->addr32[0]) || \ 458 (c == AF_INET6 && !(a)->addr32[0] && !(a)->addr32[1] && \ 459 !(a)->addr32[2] && !(a)->addr32[3] )) \ 460 461 #define PF_MATCHA(n, a, m, b, f) \ 462 pf_match_addr(n, a, m, b, f) 463 464 #define PF_ACPY(a, b, f) \ 465 pf_addrcpy(a, b, f) 466 467 #define PF_AINC(a, f) \ 468 pf_addr_inc(a, f) 469 470 #define PF_POOLMASK(a, b, c, d, f) \ 471 pf_poolmask(a, b, c, d, f) 472 473 #else 474 475 /* Just IPv6 */ 476 477 #ifdef PF_INET6_ONLY 478 479 #define PF_AEQ(a, b, c) \ 480 ((a)->addr32[3] == (b)->addr32[3] && \ 481 (a)->addr32[2] == (b)->addr32[2] && \ 482 (a)->addr32[1] == (b)->addr32[1] && \ 483 (a)->addr32[0] == (b)->addr32[0]) \ 484 485 #define PF_ANEQ(a, b, c) \ 486 ((a)->addr32[3] != (b)->addr32[3] || \ 487 (a)->addr32[2] != (b)->addr32[2] || \ 488 (a)->addr32[1] != (b)->addr32[1] || \ 489 (a)->addr32[0] != (b)->addr32[0]) \ 490 491 #define PF_AZERO(a, c) \ 492 (!(a)->addr32[0] && \ 493 !(a)->addr32[1] && \ 494 !(a)->addr32[2] && \ 495 !(a)->addr32[3] ) \ 496 497 #define PF_MATCHA(n, a, m, b, f) \ 498 pf_match_addr(n, a, m, b, f) 499 500 #define PF_ACPY(a, b, f) \ 501 pf_addrcpy(a, b, f) 502 503 #define PF_AINC(a, f) \ 504 pf_addr_inc(a, f) 505 506 #define PF_POOLMASK(a, b, c, d, f) \ 507 pf_poolmask(a, b, c, d, f) 508 509 #else 510 511 /* Just IPv4 */ 512 #ifdef PF_INET_ONLY 513 514 #define PF_AEQ(a, b, c) \ 515 ((a)->addr32[0] == (b)->addr32[0]) 516 517 #define PF_ANEQ(a, b, c) \ 518 ((a)->addr32[0] != (b)->addr32[0]) 519 520 #define PF_AZERO(a, c) \ 521 (!(a)->addr32[0]) 522 523 #define PF_MATCHA(n, a, m, b, f) \ 524 pf_match_addr(n, a, m, b, f) 525 526 #define PF_ACPY(a, b, f) \ 527 (a)->v4.s_addr = (b)->v4.s_addr 528 529 #define PF_AINC(a, f) \ 530 do { \ 531 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \ 532 } while (0) 533 534 #define PF_POOLMASK(a, b, c, d, f) \ 535 do { \ 536 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \ 537 (((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \ 538 } while (0) 539 540 #endif /* PF_INET_ONLY */ 541 #endif /* PF_INET6_ONLY */ 542 #endif /* PF_INET_INET6 */ 543 544 /* 545 * XXX callers not FIB-aware in our version of pf yet. 546 * OpenBSD fixed it later it seems, 2010/05/07 13:33:16 claudio. 547 */ 548 #define PF_MISMATCHAW(aw, x, af, neg, ifp, rtid) \ 549 ( \ 550 (((aw)->type == PF_ADDR_NOROUTE && \ 551 pf_routable((x), (af), NULL, (rtid))) || \ 552 (((aw)->type == PF_ADDR_URPFFAILED && (ifp) != NULL && \ 553 pf_routable((x), (af), (ifp), (rtid))) || \ 554 ((aw)->type == PF_ADDR_TABLE && \ 555 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \ 556 ((aw)->type == PF_ADDR_DYNIFTL && \ 557 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \ 558 ((aw)->type == PF_ADDR_RANGE && \ 559 !pf_match_addr_range(&(aw)->v.a.addr, \ 560 &(aw)->v.a.mask, (x), (af))) || \ 561 ((aw)->type == PF_ADDR_ADDRMASK && \ 562 !PF_AZERO(&(aw)->v.a.mask, (af)) && \ 563 !PF_MATCHA(0, &(aw)->v.a.addr, \ 564 &(aw)->v.a.mask, (x), (af))))) != \ 565 (neg) \ 566 ) 567 568 #define PF_ALGNMNT(off) (((off) % 2) == 0) 569 570 #ifdef _KERNEL 571 572 struct pf_kpooladdr { 573 struct pf_addr_wrap addr; 574 TAILQ_ENTRY(pf_kpooladdr) entries; 575 char ifname[IFNAMSIZ]; 576 struct pfi_kkif *kif; 577 }; 578 579 TAILQ_HEAD(pf_kpalist, pf_kpooladdr); 580 581 struct pf_kpool { 582 struct mtx mtx; 583 struct pf_kpalist list; 584 struct pf_kpooladdr *cur; 585 struct pf_poolhashkey key; 586 struct pf_addr counter; 587 struct pf_mape_portset mape; 588 int tblidx; 589 u_int16_t proxy_port[2]; 590 u_int8_t opts; 591 }; 592 593 struct pf_rule_actions { 594 uint16_t qid; 595 uint16_t pqid; 596 uint16_t dnpipe; 597 uint16_t dnrpipe; /* Reverse direction pipe */ 598 uint32_t flags; 599 }; 600 601 union pf_keth_rule_ptr { 602 struct pf_keth_rule *ptr; 603 uint32_t nr; 604 }; 605 606 struct pf_keth_rule_addr { 607 uint8_t addr[ETHER_ADDR_LEN]; 608 uint8_t mask[ETHER_ADDR_LEN]; 609 bool neg; 610 uint8_t isset; 611 }; 612 613 struct pf_keth_anchor; 614 615 TAILQ_HEAD(pf_keth_ruleq, pf_keth_rule); 616 617 struct pf_keth_ruleset { 618 struct pf_keth_ruleq rules[2]; 619 struct pf_keth_rules { 620 struct pf_keth_ruleq *rules; 621 int open; 622 uint32_t ticket; 623 } active, inactive; 624 struct epoch_context epoch_ctx; 625 struct vnet *vnet; 626 struct pf_keth_anchor *anchor; 627 }; 628 629 RB_HEAD(pf_keth_anchor_global, pf_keth_anchor); 630 RB_HEAD(pf_keth_anchor_node, pf_keth_anchor); 631 struct pf_keth_anchor { 632 RB_ENTRY(pf_keth_anchor) entry_node; 633 RB_ENTRY(pf_keth_anchor) entry_global; 634 struct pf_keth_anchor *parent; 635 struct pf_keth_anchor_node children; 636 char name[PF_ANCHOR_NAME_SIZE]; 637 char path[MAXPATHLEN]; 638 struct pf_keth_ruleset ruleset; 639 int refcnt; /* anchor rules */ 640 uint8_t anchor_relative; 641 uint8_t anchor_wildcard; 642 }; 643 RB_PROTOTYPE(pf_keth_anchor_node, pf_keth_anchor, entry_node, 644 pf_keth_anchor_compare); 645 RB_PROTOTYPE(pf_keth_anchor_global, pf_keth_anchor, entry_global, 646 pf_keth_anchor_compare); 647 648 struct pf_keth_rule { 649 #define PFE_SKIP_IFP 0 650 #define PFE_SKIP_DIR 1 651 #define PFE_SKIP_PROTO 2 652 #define PFE_SKIP_SRC_ADDR 3 653 #define PFE_SKIP_DST_ADDR 4 654 #define PFE_SKIP_COUNT 5 655 union pf_keth_rule_ptr skip[PFE_SKIP_COUNT]; 656 657 TAILQ_ENTRY(pf_keth_rule) entries; 658 659 struct pf_keth_anchor *anchor; 660 u_int8_t anchor_relative; 661 u_int8_t anchor_wildcard; 662 663 uint32_t nr; 664 665 bool quick; 666 667 /* Filter */ 668 char ifname[IFNAMSIZ]; 669 struct pfi_kkif *kif; 670 bool ifnot; 671 uint8_t direction; 672 uint16_t proto; 673 struct pf_keth_rule_addr src, dst; 674 struct pf_rule_addr ipsrc, ipdst; 675 char match_tagname[PF_TAG_NAME_SIZE]; 676 uint16_t match_tag; 677 bool match_tag_not; 678 679 680 /* Stats */ 681 counter_u64_t evaluations; 682 counter_u64_t packets[2]; 683 counter_u64_t bytes[2]; 684 uint32_t *timestamp; 685 686 /* Action */ 687 char qname[PF_QNAME_SIZE]; 688 int qid; 689 char tagname[PF_TAG_NAME_SIZE]; 690 uint16_t tag; 691 uint8_t action; 692 uint16_t dnpipe; 693 uint32_t dnflags; 694 }; 695 696 union pf_krule_ptr { 697 struct pf_krule *ptr; 698 u_int32_t nr; 699 }; 700 701 RB_HEAD(pf_krule_global, pf_krule); 702 RB_PROTOTYPE(pf_krule_global, pf_krule, entry_global, pf_krule_compare); 703 704 struct pf_krule { 705 struct pf_rule_addr src; 706 struct pf_rule_addr dst; 707 union pf_krule_ptr skip[PF_SKIP_COUNT]; 708 char label[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE]; 709 uint32_t ridentifier; 710 char ifname[IFNAMSIZ]; 711 char qname[PF_QNAME_SIZE]; 712 char pqname[PF_QNAME_SIZE]; 713 char tagname[PF_TAG_NAME_SIZE]; 714 char match_tagname[PF_TAG_NAME_SIZE]; 715 716 char overload_tblname[PF_TABLE_NAME_SIZE]; 717 718 TAILQ_ENTRY(pf_krule) entries; 719 struct pf_kpool rpool; 720 721 struct pf_counter_u64 evaluations; 722 struct pf_counter_u64 packets[2]; 723 struct pf_counter_u64 bytes[2]; 724 uint32_t *timestamp; 725 726 struct pfi_kkif *kif; 727 struct pf_kanchor *anchor; 728 struct pfr_ktable *overload_tbl; 729 730 pf_osfp_t os_fingerprint; 731 732 int rtableid; 733 u_int32_t timeout[PFTM_MAX]; 734 u_int32_t max_states; 735 u_int32_t max_src_nodes; 736 u_int32_t max_src_states; 737 u_int32_t max_src_conn; 738 struct { 739 u_int32_t limit; 740 u_int32_t seconds; 741 } max_src_conn_rate; 742 u_int16_t qid; 743 u_int16_t pqid; 744 u_int16_t dnpipe; 745 u_int16_t dnrpipe; 746 u_int32_t free_flags; 747 u_int32_t nr; 748 u_int32_t prob; 749 uid_t cuid; 750 pid_t cpid; 751 752 counter_u64_t states_cur; 753 counter_u64_t states_tot; 754 counter_u64_t src_nodes; 755 756 u_int16_t return_icmp; 757 u_int16_t return_icmp6; 758 u_int16_t max_mss; 759 u_int16_t tag; 760 u_int16_t match_tag; 761 u_int16_t scrub_flags; 762 763 struct pf_rule_uid uid; 764 struct pf_rule_gid gid; 765 766 u_int32_t rule_flag; 767 uint32_t rule_ref; 768 u_int8_t action; 769 u_int8_t direction; 770 u_int8_t log; 771 u_int8_t logif; 772 u_int8_t quick; 773 u_int8_t ifnot; 774 u_int8_t match_tag_not; 775 u_int8_t natpass; 776 777 u_int8_t keep_state; 778 sa_family_t af; 779 u_int8_t proto; 780 u_int8_t type; 781 u_int8_t code; 782 u_int8_t flags; 783 u_int8_t flagset; 784 u_int8_t min_ttl; 785 u_int8_t allow_opts; 786 u_int8_t rt; 787 u_int8_t return_ttl; 788 u_int8_t tos; 789 u_int8_t set_tos; 790 u_int8_t anchor_relative; 791 u_int8_t anchor_wildcard; 792 793 u_int8_t flush; 794 u_int8_t prio; 795 u_int8_t set_prio[2]; 796 797 struct { 798 struct pf_addr addr; 799 u_int16_t port; 800 } divert; 801 u_int8_t md5sum[PF_MD5_DIGEST_LENGTH]; 802 RB_ENTRY(pf_krule) entry_global; 803 804 #ifdef PF_WANT_32_TO_64_COUNTER 805 LIST_ENTRY(pf_krule) allrulelist; 806 bool allrulelinked; 807 #endif 808 }; 809 810 struct pf_ksrc_node { 811 LIST_ENTRY(pf_ksrc_node) entry; 812 struct pf_addr addr; 813 struct pf_addr raddr; 814 union pf_krule_ptr rule; 815 struct pfi_kkif *kif; 816 counter_u64_t bytes[2]; 817 counter_u64_t packets[2]; 818 u_int32_t states; 819 u_int32_t conn; 820 struct pf_threshold conn_rate; 821 u_int32_t creation; 822 u_int32_t expire; 823 sa_family_t af; 824 u_int8_t ruletype; 825 }; 826 #endif 827 828 struct pf_state_scrub { 829 struct timeval pfss_last; /* time received last packet */ 830 u_int32_t pfss_tsecr; /* last echoed timestamp */ 831 u_int32_t pfss_tsval; /* largest timestamp */ 832 u_int32_t pfss_tsval0; /* original timestamp */ 833 u_int16_t pfss_flags; 834 #define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */ 835 #define PFSS_PAWS 0x0010 /* stricter PAWS checks */ 836 #define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */ 837 #define PFSS_DATA_TS 0x0040 /* timestamp on data packets */ 838 #define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */ 839 u_int8_t pfss_ttl; /* stashed TTL */ 840 u_int8_t pad; 841 u_int32_t pfss_ts_mod; /* timestamp modulation */ 842 }; 843 844 struct pf_state_host { 845 struct pf_addr addr; 846 u_int16_t port; 847 u_int16_t pad; 848 }; 849 850 struct pf_state_peer { 851 struct pf_state_scrub *scrub; /* state is scrubbed */ 852 u_int32_t seqlo; /* Max sequence number sent */ 853 u_int32_t seqhi; /* Max the other end ACKd + win */ 854 u_int32_t seqdiff; /* Sequence number modulator */ 855 u_int16_t max_win; /* largest window (pre scaling) */ 856 u_int16_t mss; /* Maximum segment size option */ 857 u_int8_t state; /* active state level */ 858 u_int8_t wscale; /* window scaling factor */ 859 u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */ 860 u_int8_t pad[1]; 861 }; 862 863 /* Keep synced with struct pf_state_key. */ 864 struct pf_state_key_cmp { 865 struct pf_addr addr[2]; 866 u_int16_t port[2]; 867 sa_family_t af; 868 u_int8_t proto; 869 u_int8_t pad[2]; 870 }; 871 872 struct pf_state_key { 873 struct pf_addr addr[2]; 874 u_int16_t port[2]; 875 sa_family_t af; 876 u_int8_t proto; 877 u_int8_t pad[2]; 878 879 LIST_ENTRY(pf_state_key) entry; 880 TAILQ_HEAD(, pf_kstate) states[2]; 881 }; 882 883 /* Keep synced with struct pf_kstate. */ 884 struct pf_state_cmp { 885 u_int64_t id; 886 u_int32_t creatorid; 887 u_int8_t direction; 888 u_int8_t pad[3]; 889 }; 890 891 #define PFSTATE_ALLOWOPTS 0x01 892 #define PFSTATE_SLOPPY 0x02 893 /* was PFSTATE_PFLOW 0x04 */ 894 #define PFSTATE_NOSYNC 0x08 895 #define PFSTATE_ACK 0x10 896 #define PFRULE_DN_IS_PIPE 0x40 897 #define PFRULE_DN_IS_QUEUE 0x80 898 #define PFSTATE_SETPRIO 0x0200 899 #define PFSTATE_SETMASK (PFSTATE_SETPRIO) 900 901 struct pf_state_scrub_export { 902 uint16_t pfss_flags; 903 uint8_t pfss_ttl; /* stashed TTL */ 904 #define PF_SCRUB_FLAG_VALID 0x01 905 uint8_t scrub_flag; 906 uint32_t pfss_ts_mod; /* timestamp modulation */ 907 }; 908 909 struct pf_state_key_export { 910 struct pf_addr addr[2]; 911 uint16_t port[2]; 912 }; 913 914 struct pf_state_peer_export { 915 struct pf_state_scrub_export scrub; /* state is scrubbed */ 916 uint32_t seqlo; /* Max sequence number sent */ 917 uint32_t seqhi; /* Max the other end ACKd + win */ 918 uint32_t seqdiff; /* Sequence number modulator */ 919 uint16_t max_win; /* largest window (pre scaling) */ 920 uint16_t mss; /* Maximum segment size option */ 921 uint8_t state; /* active state level */ 922 uint8_t wscale; /* window scaling factor */ 923 uint8_t dummy[6]; 924 }; 925 _Static_assert(sizeof(struct pf_state_peer_export) == 32, "size incorrect"); 926 927 struct pf_state_export { 928 uint64_t version; 929 #define PF_STATE_VERSION 20210706 930 uint64_t id; 931 char ifname[IFNAMSIZ]; 932 char orig_ifname[IFNAMSIZ]; 933 struct pf_state_key_export key[2]; 934 struct pf_state_peer_export src; 935 struct pf_state_peer_export dst; 936 struct pf_addr rt_addr; 937 uint32_t rule; 938 uint32_t anchor; 939 uint32_t nat_rule; 940 uint32_t creation; 941 uint32_t expire; 942 uint32_t spare0; 943 uint64_t packets[2]; 944 uint64_t bytes[2]; 945 uint32_t creatorid; 946 uint32_t spare1; 947 sa_family_t af; 948 uint8_t proto; 949 uint8_t direction; 950 uint8_t log; 951 uint8_t state_flags; 952 uint8_t timeout; 953 uint8_t sync_flags; 954 uint8_t updates; 955 956 uint8_t spare[112]; 957 }; 958 _Static_assert(sizeof(struct pf_state_export) == 384, "size incorrect"); 959 960 #ifdef _KERNEL 961 struct pf_kstate { 962 /* 963 * Area shared with pf_state_cmp 964 */ 965 u_int64_t id; 966 u_int32_t creatorid; 967 u_int8_t direction; 968 u_int8_t pad[3]; 969 /* 970 * end of the area 971 */ 972 973 u_int8_t state_flags; 974 u_int8_t timeout; 975 u_int8_t sync_state; /* PFSYNC_S_x */ 976 u_int8_t sync_updates; /* XXX */ 977 u_int refs; 978 struct mtx *lock; 979 TAILQ_ENTRY(pf_kstate) sync_list; 980 TAILQ_ENTRY(pf_kstate) key_list[2]; 981 LIST_ENTRY(pf_kstate) entry; 982 struct pf_state_peer src; 983 struct pf_state_peer dst; 984 union pf_krule_ptr rule; 985 union pf_krule_ptr anchor; 986 union pf_krule_ptr nat_rule; 987 struct pf_addr rt_addr; 988 struct pf_state_key *key[2]; /* addresses stack and wire */ 989 struct pfi_kkif *kif; 990 struct pfi_kkif *orig_kif; /* The real kif, even if we're a floating state (i.e. if == V_pfi_all). */ 991 struct pfi_kkif *rt_kif; 992 struct pf_ksrc_node *src_node; 993 struct pf_ksrc_node *nat_src_node; 994 u_int64_t packets[2]; 995 u_int64_t bytes[2]; 996 u_int32_t creation; 997 u_int32_t expire; 998 u_int32_t pfsync_time; 999 u_int16_t qid; 1000 u_int16_t pqid; 1001 u_int16_t dnpipe; 1002 u_int16_t dnrpipe; 1003 u_int16_t tag; 1004 u_int8_t log; 1005 }; 1006 1007 /* 1008 * Size <= fits 13 objects per page on LP64. Try to not grow the struct beyond that. 1009 */ 1010 _Static_assert(sizeof(struct pf_kstate) <= 312, "pf_kstate size crosses 312 bytes"); 1011 #endif 1012 1013 /* 1014 * Unified state structures for pulling states out of the kernel 1015 * used by pfsync(4) and the pf(4) ioctl. 1016 */ 1017 struct pfsync_state_scrub { 1018 u_int16_t pfss_flags; 1019 u_int8_t pfss_ttl; /* stashed TTL */ 1020 #define PFSYNC_SCRUB_FLAG_VALID 0x01 1021 u_int8_t scrub_flag; 1022 u_int32_t pfss_ts_mod; /* timestamp modulation */ 1023 } __packed; 1024 1025 struct pfsync_state_peer { 1026 struct pfsync_state_scrub scrub; /* state is scrubbed */ 1027 u_int32_t seqlo; /* Max sequence number sent */ 1028 u_int32_t seqhi; /* Max the other end ACKd + win */ 1029 u_int32_t seqdiff; /* Sequence number modulator */ 1030 u_int16_t max_win; /* largest window (pre scaling) */ 1031 u_int16_t mss; /* Maximum segment size option */ 1032 u_int8_t state; /* active state level */ 1033 u_int8_t wscale; /* window scaling factor */ 1034 u_int8_t pad[6]; 1035 } __packed; 1036 1037 struct pfsync_state_key { 1038 struct pf_addr addr[2]; 1039 u_int16_t port[2]; 1040 }; 1041 1042 struct pfsync_state { 1043 u_int64_t id; 1044 char ifname[IFNAMSIZ]; 1045 struct pfsync_state_key key[2]; 1046 struct pfsync_state_peer src; 1047 struct pfsync_state_peer dst; 1048 struct pf_addr rt_addr; 1049 u_int32_t rule; 1050 u_int32_t anchor; 1051 u_int32_t nat_rule; 1052 u_int32_t creation; 1053 u_int32_t expire; 1054 u_int32_t packets[2][2]; 1055 u_int32_t bytes[2][2]; 1056 u_int32_t creatorid; 1057 sa_family_t af; 1058 u_int8_t proto; 1059 u_int8_t direction; 1060 u_int8_t __spare[2]; 1061 u_int8_t log; 1062 u_int8_t state_flags; 1063 u_int8_t timeout; 1064 u_int8_t sync_flags; 1065 u_int8_t updates; 1066 } __packed; 1067 1068 #ifdef _KERNEL 1069 /* pfsync */ 1070 typedef int pfsync_state_import_t(struct pfsync_state *, u_int8_t); 1071 typedef void pfsync_insert_state_t(struct pf_kstate *); 1072 typedef void pfsync_update_state_t(struct pf_kstate *); 1073 typedef void pfsync_delete_state_t(struct pf_kstate *); 1074 typedef void pfsync_clear_states_t(u_int32_t, const char *); 1075 typedef int pfsync_defer_t(struct pf_kstate *, struct mbuf *); 1076 typedef void pfsync_detach_ifnet_t(struct ifnet *); 1077 1078 VNET_DECLARE(pfsync_state_import_t *, pfsync_state_import_ptr); 1079 #define V_pfsync_state_import_ptr VNET(pfsync_state_import_ptr) 1080 VNET_DECLARE(pfsync_insert_state_t *, pfsync_insert_state_ptr); 1081 #define V_pfsync_insert_state_ptr VNET(pfsync_insert_state_ptr) 1082 VNET_DECLARE(pfsync_update_state_t *, pfsync_update_state_ptr); 1083 #define V_pfsync_update_state_ptr VNET(pfsync_update_state_ptr) 1084 VNET_DECLARE(pfsync_delete_state_t *, pfsync_delete_state_ptr); 1085 #define V_pfsync_delete_state_ptr VNET(pfsync_delete_state_ptr) 1086 VNET_DECLARE(pfsync_clear_states_t *, pfsync_clear_states_ptr); 1087 #define V_pfsync_clear_states_ptr VNET(pfsync_clear_states_ptr) 1088 VNET_DECLARE(pfsync_defer_t *, pfsync_defer_ptr); 1089 #define V_pfsync_defer_ptr VNET(pfsync_defer_ptr) 1090 extern pfsync_detach_ifnet_t *pfsync_detach_ifnet_ptr; 1091 1092 void pfsync_state_export(struct pfsync_state *, 1093 struct pf_kstate *); 1094 void pf_state_export(struct pf_state_export *, 1095 struct pf_kstate *); 1096 1097 /* pflog */ 1098 struct pf_kruleset; 1099 struct pf_pdesc; 1100 typedef int pflog_packet_t(struct pfi_kkif *, struct mbuf *, sa_family_t, 1101 u_int8_t, u_int8_t, struct pf_krule *, struct pf_krule *, 1102 struct pf_kruleset *, struct pf_pdesc *, int); 1103 extern pflog_packet_t *pflog_packet_ptr; 1104 1105 #endif /* _KERNEL */ 1106 1107 #define PFSYNC_FLAG_SRCNODE 0x04 1108 #define PFSYNC_FLAG_NATSRCNODE 0x08 1109 1110 /* for copies to/from network byte order */ 1111 /* ioctl interface also uses network byte order */ 1112 #define pf_state_peer_hton(s,d) do { \ 1113 (d)->seqlo = htonl((s)->seqlo); \ 1114 (d)->seqhi = htonl((s)->seqhi); \ 1115 (d)->seqdiff = htonl((s)->seqdiff); \ 1116 (d)->max_win = htons((s)->max_win); \ 1117 (d)->mss = htons((s)->mss); \ 1118 (d)->state = (s)->state; \ 1119 (d)->wscale = (s)->wscale; \ 1120 if ((s)->scrub) { \ 1121 (d)->scrub.pfss_flags = \ 1122 htons((s)->scrub->pfss_flags & PFSS_TIMESTAMP); \ 1123 (d)->scrub.pfss_ttl = (s)->scrub->pfss_ttl; \ 1124 (d)->scrub.pfss_ts_mod = htonl((s)->scrub->pfss_ts_mod);\ 1125 (d)->scrub.scrub_flag = PFSYNC_SCRUB_FLAG_VALID; \ 1126 } \ 1127 } while (0) 1128 1129 #define pf_state_peer_ntoh(s,d) do { \ 1130 (d)->seqlo = ntohl((s)->seqlo); \ 1131 (d)->seqhi = ntohl((s)->seqhi); \ 1132 (d)->seqdiff = ntohl((s)->seqdiff); \ 1133 (d)->max_win = ntohs((s)->max_win); \ 1134 (d)->mss = ntohs((s)->mss); \ 1135 (d)->state = (s)->state; \ 1136 (d)->wscale = (s)->wscale; \ 1137 if ((s)->scrub.scrub_flag == PFSYNC_SCRUB_FLAG_VALID && \ 1138 (d)->scrub != NULL) { \ 1139 (d)->scrub->pfss_flags = \ 1140 ntohs((s)->scrub.pfss_flags) & PFSS_TIMESTAMP; \ 1141 (d)->scrub->pfss_ttl = (s)->scrub.pfss_ttl; \ 1142 (d)->scrub->pfss_ts_mod = ntohl((s)->scrub.pfss_ts_mod);\ 1143 } \ 1144 } while (0) 1145 1146 #define pf_state_counter_hton(s,d) do { \ 1147 d[0] = htonl((s>>32)&0xffffffff); \ 1148 d[1] = htonl(s&0xffffffff); \ 1149 } while (0) 1150 1151 #define pf_state_counter_from_pfsync(s) \ 1152 (((u_int64_t)(s[0])<<32) | (u_int64_t)(s[1])) 1153 1154 #define pf_state_counter_ntoh(s,d) do { \ 1155 d = ntohl(s[0]); \ 1156 d = d<<32; \ 1157 d += ntohl(s[1]); \ 1158 } while (0) 1159 1160 TAILQ_HEAD(pf_krulequeue, pf_krule); 1161 1162 struct pf_kanchor; 1163 1164 struct pf_kruleset { 1165 struct { 1166 struct pf_krulequeue queues[2]; 1167 struct { 1168 struct pf_krulequeue *ptr; 1169 struct pf_krule **ptr_array; 1170 u_int32_t rcount; 1171 u_int32_t ticket; 1172 int open; 1173 struct pf_krule_global *tree; 1174 } active, inactive; 1175 } rules[PF_RULESET_MAX]; 1176 struct pf_kanchor *anchor; 1177 u_int32_t tticket; 1178 int tables; 1179 int topen; 1180 }; 1181 1182 RB_HEAD(pf_kanchor_global, pf_kanchor); 1183 RB_HEAD(pf_kanchor_node, pf_kanchor); 1184 struct pf_kanchor { 1185 RB_ENTRY(pf_kanchor) entry_global; 1186 RB_ENTRY(pf_kanchor) entry_node; 1187 struct pf_kanchor *parent; 1188 struct pf_kanchor_node children; 1189 char name[PF_ANCHOR_NAME_SIZE]; 1190 char path[MAXPATHLEN]; 1191 struct pf_kruleset ruleset; 1192 int refcnt; /* anchor rules */ 1193 }; 1194 RB_PROTOTYPE(pf_kanchor_global, pf_kanchor, entry_global, pf_anchor_compare); 1195 RB_PROTOTYPE(pf_kanchor_node, pf_kanchor, entry_node, pf_kanchor_compare); 1196 1197 #define PF_RESERVED_ANCHOR "_pf" 1198 1199 #define PFR_TFLAG_PERSIST 0x00000001 1200 #define PFR_TFLAG_CONST 0x00000002 1201 #define PFR_TFLAG_ACTIVE 0x00000004 1202 #define PFR_TFLAG_INACTIVE 0x00000008 1203 #define PFR_TFLAG_REFERENCED 0x00000010 1204 #define PFR_TFLAG_REFDANCHOR 0x00000020 1205 #define PFR_TFLAG_COUNTERS 0x00000040 1206 /* Adjust masks below when adding flags. */ 1207 #define PFR_TFLAG_USRMASK (PFR_TFLAG_PERSIST | \ 1208 PFR_TFLAG_CONST | \ 1209 PFR_TFLAG_COUNTERS) 1210 #define PFR_TFLAG_SETMASK (PFR_TFLAG_ACTIVE | \ 1211 PFR_TFLAG_INACTIVE | \ 1212 PFR_TFLAG_REFERENCED | \ 1213 PFR_TFLAG_REFDANCHOR) 1214 #define PFR_TFLAG_ALLMASK (PFR_TFLAG_PERSIST | \ 1215 PFR_TFLAG_CONST | \ 1216 PFR_TFLAG_ACTIVE | \ 1217 PFR_TFLAG_INACTIVE | \ 1218 PFR_TFLAG_REFERENCED | \ 1219 PFR_TFLAG_REFDANCHOR | \ 1220 PFR_TFLAG_COUNTERS) 1221 1222 struct pf_kanchor_stackframe; 1223 struct pf_keth_anchor_stackframe; 1224 1225 struct pfr_table { 1226 char pfrt_anchor[MAXPATHLEN]; 1227 char pfrt_name[PF_TABLE_NAME_SIZE]; 1228 u_int32_t pfrt_flags; 1229 u_int8_t pfrt_fback; 1230 }; 1231 1232 enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED, 1233 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE, 1234 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_NOCOUNT, PFR_FB_MAX }; 1235 1236 struct pfr_addr { 1237 union { 1238 struct in_addr _pfra_ip4addr; 1239 struct in6_addr _pfra_ip6addr; 1240 } pfra_u; 1241 u_int8_t pfra_af; 1242 u_int8_t pfra_net; 1243 u_int8_t pfra_not; 1244 u_int8_t pfra_fback; 1245 }; 1246 #define pfra_ip4addr pfra_u._pfra_ip4addr 1247 #define pfra_ip6addr pfra_u._pfra_ip6addr 1248 1249 enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX }; 1250 enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX }; 1251 enum { PFR_TYPE_PACKETS, PFR_TYPE_BYTES, PFR_TYPE_MAX }; 1252 #define PFR_NUM_COUNTERS (PFR_DIR_MAX * PFR_OP_ADDR_MAX * PFR_TYPE_MAX) 1253 #define PFR_OP_XPASS PFR_OP_ADDR_MAX 1254 1255 struct pfr_astats { 1256 struct pfr_addr pfras_a; 1257 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1258 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1259 long pfras_tzero; 1260 }; 1261 1262 enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX }; 1263 1264 struct pfr_tstats { 1265 struct pfr_table pfrts_t; 1266 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1267 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1268 u_int64_t pfrts_match; 1269 u_int64_t pfrts_nomatch; 1270 long pfrts_tzero; 1271 int pfrts_cnt; 1272 int pfrts_refcnt[PFR_REFCNT_MAX]; 1273 }; 1274 1275 #ifdef _KERNEL 1276 1277 struct pfr_kstate_counter { 1278 counter_u64_t pkc_pcpu; 1279 u_int64_t pkc_zero; 1280 }; 1281 1282 static inline int 1283 pfr_kstate_counter_init(struct pfr_kstate_counter *pfrc, int flags) 1284 { 1285 1286 pfrc->pkc_zero = 0; 1287 pfrc->pkc_pcpu = counter_u64_alloc(flags); 1288 if (pfrc->pkc_pcpu == NULL) 1289 return (ENOMEM); 1290 return (0); 1291 } 1292 1293 static inline void 1294 pfr_kstate_counter_deinit(struct pfr_kstate_counter *pfrc) 1295 { 1296 1297 counter_u64_free(pfrc->pkc_pcpu); 1298 } 1299 1300 static inline u_int64_t 1301 pfr_kstate_counter_fetch(struct pfr_kstate_counter *pfrc) 1302 { 1303 u_int64_t c; 1304 1305 c = counter_u64_fetch(pfrc->pkc_pcpu); 1306 c -= pfrc->pkc_zero; 1307 return (c); 1308 } 1309 1310 static inline void 1311 pfr_kstate_counter_zero(struct pfr_kstate_counter *pfrc) 1312 { 1313 u_int64_t c; 1314 1315 c = counter_u64_fetch(pfrc->pkc_pcpu); 1316 pfrc->pkc_zero = c; 1317 } 1318 1319 static inline void 1320 pfr_kstate_counter_add(struct pfr_kstate_counter *pfrc, int64_t n) 1321 { 1322 1323 counter_u64_add(pfrc->pkc_pcpu, n); 1324 } 1325 1326 struct pfr_ktstats { 1327 struct pfr_table pfrts_t; 1328 struct pfr_kstate_counter pfrkts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1329 struct pfr_kstate_counter pfrkts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1330 struct pfr_kstate_counter pfrkts_match; 1331 struct pfr_kstate_counter pfrkts_nomatch; 1332 long pfrkts_tzero; 1333 int pfrkts_cnt; 1334 int pfrkts_refcnt[PFR_REFCNT_MAX]; 1335 }; 1336 1337 #endif /* _KERNEL */ 1338 1339 #define pfrts_name pfrts_t.pfrt_name 1340 #define pfrts_flags pfrts_t.pfrt_flags 1341 1342 #ifndef _SOCKADDR_UNION_DEFINED 1343 #define _SOCKADDR_UNION_DEFINED 1344 union sockaddr_union { 1345 struct sockaddr sa; 1346 struct sockaddr_in sin; 1347 struct sockaddr_in6 sin6; 1348 }; 1349 #endif /* _SOCKADDR_UNION_DEFINED */ 1350 1351 struct pfr_kcounters { 1352 counter_u64_t pfrkc_counters; 1353 long pfrkc_tzero; 1354 }; 1355 #define pfr_kentry_counter(kc, dir, op, t) \ 1356 ((kc)->pfrkc_counters + \ 1357 (dir) * PFR_OP_ADDR_MAX * PFR_TYPE_MAX + (op) * PFR_TYPE_MAX + (t)) 1358 1359 #ifdef _KERNEL 1360 SLIST_HEAD(pfr_kentryworkq, pfr_kentry); 1361 struct pfr_kentry { 1362 struct radix_node pfrke_node[2]; 1363 union sockaddr_union pfrke_sa; 1364 SLIST_ENTRY(pfr_kentry) pfrke_workq; 1365 struct pfr_kcounters pfrke_counters; 1366 u_int8_t pfrke_af; 1367 u_int8_t pfrke_net; 1368 u_int8_t pfrke_not; 1369 u_int8_t pfrke_mark; 1370 }; 1371 1372 SLIST_HEAD(pfr_ktableworkq, pfr_ktable); 1373 RB_HEAD(pfr_ktablehead, pfr_ktable); 1374 struct pfr_ktable { 1375 struct pfr_ktstats pfrkt_kts; 1376 RB_ENTRY(pfr_ktable) pfrkt_tree; 1377 SLIST_ENTRY(pfr_ktable) pfrkt_workq; 1378 struct radix_node_head *pfrkt_ip4; 1379 struct radix_node_head *pfrkt_ip6; 1380 struct pfr_ktable *pfrkt_shadow; 1381 struct pfr_ktable *pfrkt_root; 1382 struct pf_kruleset *pfrkt_rs; 1383 long pfrkt_larg; 1384 int pfrkt_nflags; 1385 }; 1386 #define pfrkt_t pfrkt_kts.pfrts_t 1387 #define pfrkt_name pfrkt_t.pfrt_name 1388 #define pfrkt_anchor pfrkt_t.pfrt_anchor 1389 #define pfrkt_ruleset pfrkt_t.pfrt_ruleset 1390 #define pfrkt_flags pfrkt_t.pfrt_flags 1391 #define pfrkt_cnt pfrkt_kts.pfrkts_cnt 1392 #define pfrkt_refcnt pfrkt_kts.pfrkts_refcnt 1393 #define pfrkt_packets pfrkt_kts.pfrkts_packets 1394 #define pfrkt_bytes pfrkt_kts.pfrkts_bytes 1395 #define pfrkt_match pfrkt_kts.pfrkts_match 1396 #define pfrkt_nomatch pfrkt_kts.pfrkts_nomatch 1397 #define pfrkt_tzero pfrkt_kts.pfrkts_tzero 1398 #endif 1399 1400 #ifdef _KERNEL 1401 struct pfi_kkif { 1402 char pfik_name[IFNAMSIZ]; 1403 union { 1404 RB_ENTRY(pfi_kkif) _pfik_tree; 1405 LIST_ENTRY(pfi_kkif) _pfik_list; 1406 } _pfik_glue; 1407 #define pfik_tree _pfik_glue._pfik_tree 1408 #define pfik_list _pfik_glue._pfik_list 1409 struct pf_counter_u64 pfik_packets[2][2][2]; 1410 struct pf_counter_u64 pfik_bytes[2][2][2]; 1411 u_int32_t pfik_tzero; 1412 u_int pfik_flags; 1413 struct ifnet *pfik_ifp; 1414 struct ifg_group *pfik_group; 1415 u_int pfik_rulerefs; 1416 TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs; 1417 #ifdef PF_WANT_32_TO_64_COUNTER 1418 LIST_ENTRY(pfi_kkif) pfik_allkiflist; 1419 #endif 1420 }; 1421 #endif 1422 1423 #define PFI_IFLAG_REFS 0x0001 /* has state references */ 1424 #define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */ 1425 1426 #ifdef _KERNEL 1427 struct pf_pdesc { 1428 struct { 1429 int done; 1430 uid_t uid; 1431 gid_t gid; 1432 } lookup; 1433 u_int64_t tot_len; /* Make Mickey money */ 1434 union pf_headers { 1435 struct tcphdr tcp; 1436 struct udphdr udp; 1437 struct icmp icmp; 1438 #ifdef INET6 1439 struct icmp6_hdr icmp6; 1440 #endif /* INET6 */ 1441 char any[0]; 1442 } hdr; 1443 1444 struct pf_krule *nat_rule; /* nat/rdr rule applied to packet */ 1445 struct pf_addr *src; /* src address */ 1446 struct pf_addr *dst; /* dst address */ 1447 u_int16_t *sport; 1448 u_int16_t *dport; 1449 struct pf_mtag *pf_mtag; 1450 struct pf_rule_actions act; 1451 1452 u_int32_t p_len; /* total length of payload */ 1453 1454 u_int16_t *ip_sum; 1455 u_int16_t *proto_sum; 1456 u_int16_t flags; /* Let SCRUB trigger behavior in 1457 * state code. Easier than tags */ 1458 #define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */ 1459 #define PFDESC_IP_REAS 0x0002 /* IP frags would've been reassembled */ 1460 sa_family_t af; 1461 u_int8_t proto; 1462 u_int8_t tos; 1463 u_int8_t dir; /* direction */ 1464 u_int8_t sidx; /* key index for source */ 1465 u_int8_t didx; /* key index for destination */ 1466 }; 1467 #endif 1468 1469 /* flags for RDR options */ 1470 #define PF_DPORT_RANGE 0x01 /* Dest port uses range */ 1471 #define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */ 1472 1473 /* UDP state enumeration */ 1474 #define PFUDPS_NO_TRAFFIC 0 1475 #define PFUDPS_SINGLE 1 1476 #define PFUDPS_MULTIPLE 2 1477 1478 #define PFUDPS_NSTATES 3 /* number of state levels */ 1479 1480 #define PFUDPS_NAMES { \ 1481 "NO_TRAFFIC", \ 1482 "SINGLE", \ 1483 "MULTIPLE", \ 1484 NULL \ 1485 } 1486 1487 /* Other protocol state enumeration */ 1488 #define PFOTHERS_NO_TRAFFIC 0 1489 #define PFOTHERS_SINGLE 1 1490 #define PFOTHERS_MULTIPLE 2 1491 1492 #define PFOTHERS_NSTATES 3 /* number of state levels */ 1493 1494 #define PFOTHERS_NAMES { \ 1495 "NO_TRAFFIC", \ 1496 "SINGLE", \ 1497 "MULTIPLE", \ 1498 NULL \ 1499 } 1500 1501 #define ACTION_SET(a, x) \ 1502 do { \ 1503 if ((a) != NULL) \ 1504 *(a) = (x); \ 1505 } while (0) 1506 1507 #define REASON_SET(a, x) \ 1508 do { \ 1509 if ((a) != NULL) \ 1510 *(a) = (x); \ 1511 if (x < PFRES_MAX) \ 1512 counter_u64_add(V_pf_status.counters[x], 1); \ 1513 } while (0) 1514 1515 enum pf_syncookies_mode { 1516 PF_SYNCOOKIES_NEVER = 0, 1517 PF_SYNCOOKIES_ALWAYS = 1, 1518 PF_SYNCOOKIES_ADAPTIVE = 2, 1519 PF_SYNCOOKIES_MODE_MAX = PF_SYNCOOKIES_ADAPTIVE 1520 }; 1521 1522 #define PF_SYNCOOKIES_HIWATPCT 25 1523 #define PF_SYNCOOKIES_LOWATPCT (PF_SYNCOOKIES_HIWATPCT / 2) 1524 1525 #ifdef _KERNEL 1526 struct pf_kstatus { 1527 counter_u64_t counters[PFRES_MAX]; /* reason for passing/dropping */ 1528 counter_u64_t lcounters[KLCNT_MAX]; /* limit counters */ 1529 struct pf_counter_u64 fcounters[FCNT_MAX]; /* state operation counters */ 1530 counter_u64_t scounters[SCNT_MAX]; /* src_node operation counters */ 1531 uint32_t states; 1532 uint32_t src_nodes; 1533 uint32_t running; 1534 uint32_t since; 1535 uint32_t debug; 1536 uint32_t hostid; 1537 char ifname[IFNAMSIZ]; 1538 uint8_t pf_chksum[PF_MD5_DIGEST_LENGTH]; 1539 bool keep_counters; 1540 enum pf_syncookies_mode syncookies_mode; 1541 bool syncookies_active; 1542 uint64_t syncookies_inflight[2]; 1543 uint32_t states_halfopen; 1544 }; 1545 #endif 1546 1547 struct pf_divert { 1548 union { 1549 struct in_addr ipv4; 1550 struct in6_addr ipv6; 1551 } addr; 1552 u_int16_t port; 1553 }; 1554 1555 #define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */ 1556 #define PFR_KENTRY_HIWAT 200000 /* Number of table entries */ 1557 1558 /* 1559 * Limit the length of the fragment queue traversal. Remember 1560 * search entry points based on the fragment offset. 1561 */ 1562 #define PF_FRAG_ENTRY_POINTS 16 1563 1564 /* 1565 * The number of entries in the fragment queue must be limited 1566 * to avoid DoS by linear searching. Instead of a global limit, 1567 * use a limit per entry point. For large packets these sum up. 1568 */ 1569 #define PF_FRAG_ENTRY_LIMIT 64 1570 1571 /* 1572 * ioctl parameter structures 1573 */ 1574 1575 struct pfioc_pooladdr { 1576 u_int32_t action; 1577 u_int32_t ticket; 1578 u_int32_t nr; 1579 u_int32_t r_num; 1580 u_int8_t r_action; 1581 u_int8_t r_last; 1582 u_int8_t af; 1583 char anchor[MAXPATHLEN]; 1584 struct pf_pooladdr addr; 1585 }; 1586 1587 struct pfioc_rule { 1588 u_int32_t action; 1589 u_int32_t ticket; 1590 u_int32_t pool_ticket; 1591 u_int32_t nr; 1592 char anchor[MAXPATHLEN]; 1593 char anchor_call[MAXPATHLEN]; 1594 struct pf_rule rule; 1595 }; 1596 1597 struct pfioc_natlook { 1598 struct pf_addr saddr; 1599 struct pf_addr daddr; 1600 struct pf_addr rsaddr; 1601 struct pf_addr rdaddr; 1602 u_int16_t sport; 1603 u_int16_t dport; 1604 u_int16_t rsport; 1605 u_int16_t rdport; 1606 sa_family_t af; 1607 u_int8_t proto; 1608 u_int8_t direction; 1609 }; 1610 1611 struct pfioc_state { 1612 struct pfsync_state state; 1613 }; 1614 1615 struct pfioc_src_node_kill { 1616 sa_family_t psnk_af; 1617 struct pf_rule_addr psnk_src; 1618 struct pf_rule_addr psnk_dst; 1619 u_int psnk_killed; 1620 }; 1621 1622 #ifdef _KERNEL 1623 struct pf_kstate_kill { 1624 struct pf_state_cmp psk_pfcmp; 1625 sa_family_t psk_af; 1626 int psk_proto; 1627 struct pf_rule_addr psk_src; 1628 struct pf_rule_addr psk_dst; 1629 struct pf_rule_addr psk_rt_addr; 1630 char psk_ifname[IFNAMSIZ]; 1631 char psk_label[PF_RULE_LABEL_SIZE]; 1632 u_int psk_killed; 1633 bool psk_kill_match; 1634 }; 1635 #endif 1636 1637 struct pfioc_state_kill { 1638 struct pf_state_cmp psk_pfcmp; 1639 sa_family_t psk_af; 1640 int psk_proto; 1641 struct pf_rule_addr psk_src; 1642 struct pf_rule_addr psk_dst; 1643 char psk_ifname[IFNAMSIZ]; 1644 char psk_label[PF_RULE_LABEL_SIZE]; 1645 u_int psk_killed; 1646 }; 1647 1648 struct pfioc_states { 1649 int ps_len; 1650 union { 1651 caddr_t psu_buf; 1652 struct pfsync_state *psu_states; 1653 } ps_u; 1654 #define ps_buf ps_u.psu_buf 1655 #define ps_states ps_u.psu_states 1656 }; 1657 1658 struct pfioc_states_v2 { 1659 int ps_len; 1660 uint64_t ps_req_version; 1661 union { 1662 caddr_t psu_buf; 1663 struct pf_state_export *psu_states; 1664 } ps_u; 1665 #define ps_buf ps_u.psu_buf 1666 #define ps_states ps_u.psu_states 1667 }; 1668 1669 struct pfioc_src_nodes { 1670 int psn_len; 1671 union { 1672 caddr_t psu_buf; 1673 struct pf_src_node *psu_src_nodes; 1674 } psn_u; 1675 #define psn_buf psn_u.psu_buf 1676 #define psn_src_nodes psn_u.psu_src_nodes 1677 }; 1678 1679 struct pfioc_if { 1680 char ifname[IFNAMSIZ]; 1681 }; 1682 1683 struct pfioc_tm { 1684 int timeout; 1685 int seconds; 1686 }; 1687 1688 struct pfioc_limit { 1689 int index; 1690 unsigned limit; 1691 }; 1692 1693 struct pfioc_altq_v0 { 1694 u_int32_t action; 1695 u_int32_t ticket; 1696 u_int32_t nr; 1697 struct pf_altq_v0 altq; 1698 }; 1699 1700 struct pfioc_altq_v1 { 1701 u_int32_t action; 1702 u_int32_t ticket; 1703 u_int32_t nr; 1704 /* 1705 * Placed here so code that only uses the above parameters can be 1706 * written entirely in terms of the v0 or v1 type. 1707 */ 1708 u_int32_t version; 1709 struct pf_altq_v1 altq; 1710 }; 1711 1712 /* 1713 * Latest version of struct pfioc_altq_vX. This must move in lock-step with 1714 * the latest version of struct pf_altq_vX as it has that struct as a 1715 * member. 1716 */ 1717 #define PFIOC_ALTQ_VERSION PF_ALTQ_VERSION 1718 1719 struct pfioc_qstats_v0 { 1720 u_int32_t ticket; 1721 u_int32_t nr; 1722 void *buf; 1723 int nbytes; 1724 u_int8_t scheduler; 1725 }; 1726 1727 struct pfioc_qstats_v1 { 1728 u_int32_t ticket; 1729 u_int32_t nr; 1730 void *buf; 1731 int nbytes; 1732 u_int8_t scheduler; 1733 /* 1734 * Placed here so code that only uses the above parameters can be 1735 * written entirely in terms of the v0 or v1 type. 1736 */ 1737 u_int32_t version; /* Requested version of stats struct */ 1738 }; 1739 1740 /* Latest version of struct pfioc_qstats_vX */ 1741 #define PFIOC_QSTATS_VERSION 1 1742 1743 struct pfioc_ruleset { 1744 u_int32_t nr; 1745 char path[MAXPATHLEN]; 1746 char name[PF_ANCHOR_NAME_SIZE]; 1747 }; 1748 1749 #define PF_RULESET_ALTQ (PF_RULESET_MAX) 1750 #define PF_RULESET_TABLE (PF_RULESET_MAX+1) 1751 #define PF_RULESET_ETH (PF_RULESET_MAX+2) 1752 struct pfioc_trans { 1753 int size; /* number of elements */ 1754 int esize; /* size of each element in bytes */ 1755 struct pfioc_trans_e { 1756 int rs_num; 1757 char anchor[MAXPATHLEN]; 1758 u_int32_t ticket; 1759 } *array; 1760 }; 1761 1762 #define PFR_FLAG_ATOMIC 0x00000001 /* unused */ 1763 #define PFR_FLAG_DUMMY 0x00000002 1764 #define PFR_FLAG_FEEDBACK 0x00000004 1765 #define PFR_FLAG_CLSTATS 0x00000008 1766 #define PFR_FLAG_ADDRSTOO 0x00000010 1767 #define PFR_FLAG_REPLACE 0x00000020 1768 #define PFR_FLAG_ALLRSETS 0x00000040 1769 #define PFR_FLAG_ALLMASK 0x0000007F 1770 #ifdef _KERNEL 1771 #define PFR_FLAG_USERIOCTL 0x10000000 1772 #endif 1773 1774 struct pfioc_table { 1775 struct pfr_table pfrio_table; 1776 void *pfrio_buffer; 1777 int pfrio_esize; 1778 int pfrio_size; 1779 int pfrio_size2; 1780 int pfrio_nadd; 1781 int pfrio_ndel; 1782 int pfrio_nchange; 1783 int pfrio_flags; 1784 u_int32_t pfrio_ticket; 1785 }; 1786 #define pfrio_exists pfrio_nadd 1787 #define pfrio_nzero pfrio_nadd 1788 #define pfrio_nmatch pfrio_nadd 1789 #define pfrio_naddr pfrio_size2 1790 #define pfrio_setflag pfrio_size2 1791 #define pfrio_clrflag pfrio_nadd 1792 1793 struct pfioc_iface { 1794 char pfiio_name[IFNAMSIZ]; 1795 void *pfiio_buffer; 1796 int pfiio_esize; 1797 int pfiio_size; 1798 int pfiio_nzero; 1799 int pfiio_flags; 1800 }; 1801 1802 /* 1803 * ioctl operations 1804 */ 1805 1806 #define DIOCSTART _IO ('D', 1) 1807 #define DIOCSTOP _IO ('D', 2) 1808 #define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule) 1809 #define DIOCADDRULENV _IOWR('D', 4, struct pfioc_nv) 1810 #define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule) 1811 #define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule) 1812 #define DIOCGETRULENV _IOWR('D', 7, struct pfioc_nv) 1813 /* XXX cut 8 - 17 */ 1814 #define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill) 1815 #define DIOCCLRSTATESNV _IOWR('D', 18, struct pfioc_nv) 1816 #define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state) 1817 #define DIOCGETSTATENV _IOWR('D', 19, struct pfioc_nv) 1818 #define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if) 1819 #define DIOCGETSTATUS _IOWR('D', 21, struct pf_status) 1820 #define DIOCGETSTATUSNV _IOWR('D', 21, struct pfioc_nv) 1821 #define DIOCCLRSTATUS _IO ('D', 22) 1822 #define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook) 1823 #define DIOCSETDEBUG _IOWR('D', 24, u_int32_t) 1824 #define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states) 1825 #define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule) 1826 /* XXX cut 26 - 28 */ 1827 #define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm) 1828 #define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm) 1829 #define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state) 1830 #define DIOCCLRRULECTRS _IO ('D', 38) 1831 #define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit) 1832 #define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit) 1833 #define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill) 1834 #define DIOCKILLSTATESNV _IOWR('D', 41, struct pfioc_nv) 1835 #define DIOCSTARTALTQ _IO ('D', 42) 1836 #define DIOCSTOPALTQ _IO ('D', 43) 1837 #define DIOCADDALTQV0 _IOWR('D', 45, struct pfioc_altq_v0) 1838 #define DIOCADDALTQV1 _IOWR('D', 45, struct pfioc_altq_v1) 1839 #define DIOCGETALTQSV0 _IOWR('D', 47, struct pfioc_altq_v0) 1840 #define DIOCGETALTQSV1 _IOWR('D', 47, struct pfioc_altq_v1) 1841 #define DIOCGETALTQV0 _IOWR('D', 48, struct pfioc_altq_v0) 1842 #define DIOCGETALTQV1 _IOWR('D', 48, struct pfioc_altq_v1) 1843 #define DIOCCHANGEALTQV0 _IOWR('D', 49, struct pfioc_altq_v0) 1844 #define DIOCCHANGEALTQV1 _IOWR('D', 49, struct pfioc_altq_v1) 1845 #define DIOCGETQSTATSV0 _IOWR('D', 50, struct pfioc_qstats_v0) 1846 #define DIOCGETQSTATSV1 _IOWR('D', 50, struct pfioc_qstats_v1) 1847 #define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr) 1848 #define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr) 1849 #define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr) 1850 #define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr) 1851 #define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr) 1852 /* XXX cut 55 - 57 */ 1853 #define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset) 1854 #define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset) 1855 #define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table) 1856 #define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table) 1857 #define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table) 1858 #define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table) 1859 #define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table) 1860 #define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table) 1861 #define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table) 1862 #define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table) 1863 #define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table) 1864 #define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table) 1865 #define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table) 1866 #define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table) 1867 #define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table) 1868 #define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table) 1869 #define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table) 1870 #define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table) 1871 #define DIOCOSFPFLUSH _IO('D', 78) 1872 #define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl) 1873 #define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl) 1874 #define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans) 1875 #define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans) 1876 #define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans) 1877 #define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes) 1878 #define DIOCCLRSRCNODES _IO('D', 85) 1879 #define DIOCSETHOSTID _IOWR('D', 86, u_int32_t) 1880 #define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface) 1881 #define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface) 1882 #define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface) 1883 #define DIOCKILLSRCNODES _IOWR('D', 91, struct pfioc_src_node_kill) 1884 #define DIOCGIFSPEEDV0 _IOWR('D', 92, struct pf_ifspeed_v0) 1885 #define DIOCGIFSPEEDV1 _IOWR('D', 92, struct pf_ifspeed_v1) 1886 #define DIOCGETSTATESV2 _IOWR('D', 93, struct pfioc_states_v2) 1887 #define DIOCGETSYNCOOKIES _IOWR('D', 94, struct pfioc_nv) 1888 #define DIOCSETSYNCOOKIES _IOWR('D', 95, struct pfioc_nv) 1889 #define DIOCKEEPCOUNTERS _IOWR('D', 96, struct pfioc_nv) 1890 #define DIOCKEEPCOUNTERS_FREEBSD13 _IOWR('D', 92, struct pfioc_nv) 1891 #define DIOCADDETHRULE _IOWR('D', 97, struct pfioc_nv) 1892 #define DIOCGETETHRULE _IOWR('D', 98, struct pfioc_nv) 1893 #define DIOCGETETHRULES _IOWR('D', 99, struct pfioc_nv) 1894 #define DIOCGETETHRULESETS _IOWR('D', 100, struct pfioc_nv) 1895 #define DIOCGETETHRULESET _IOWR('D', 101, struct pfioc_nv) 1896 1897 struct pf_ifspeed_v0 { 1898 char ifname[IFNAMSIZ]; 1899 u_int32_t baudrate; 1900 }; 1901 1902 struct pf_ifspeed_v1 { 1903 char ifname[IFNAMSIZ]; 1904 u_int32_t baudrate32; 1905 /* layout identical to struct pf_ifspeed_v0 up to this point */ 1906 u_int64_t baudrate; 1907 }; 1908 1909 /* Latest version of struct pf_ifspeed_vX */ 1910 #define PF_IFSPEED_VERSION 1 1911 1912 /* 1913 * Compatibility and convenience macros 1914 */ 1915 #ifndef _KERNEL 1916 #ifdef PFIOC_USE_LATEST 1917 /* 1918 * Maintaining in-tree consumers of the ioctl interface is easier when that 1919 * code can be written in terms old names that refer to the latest interface 1920 * version as that reduces the required changes in the consumers to those 1921 * that are functionally necessary to accommodate a new interface version. 1922 */ 1923 #define pfioc_altq __CONCAT(pfioc_altq_v, PFIOC_ALTQ_VERSION) 1924 #define pfioc_qstats __CONCAT(pfioc_qstats_v, PFIOC_QSTATS_VERSION) 1925 #define pf_ifspeed __CONCAT(pf_ifspeed_v, PF_IFSPEED_VERSION) 1926 1927 #define DIOCADDALTQ __CONCAT(DIOCADDALTQV, PFIOC_ALTQ_VERSION) 1928 #define DIOCGETALTQS __CONCAT(DIOCGETALTQSV, PFIOC_ALTQ_VERSION) 1929 #define DIOCGETALTQ __CONCAT(DIOCGETALTQV, PFIOC_ALTQ_VERSION) 1930 #define DIOCCHANGEALTQ __CONCAT(DIOCCHANGEALTQV, PFIOC_ALTQ_VERSION) 1931 #define DIOCGETQSTATS __CONCAT(DIOCGETQSTATSV, PFIOC_QSTATS_VERSION) 1932 #define DIOCGIFSPEED __CONCAT(DIOCGIFSPEEDV, PF_IFSPEED_VERSION) 1933 #else 1934 /* 1935 * When building out-of-tree code that is written for the old interface, 1936 * such as may exist in ports for example, resolve the old struct tags and 1937 * ioctl command names to the v0 versions. 1938 */ 1939 #define pfioc_altq __CONCAT(pfioc_altq_v, 0) 1940 #define pfioc_qstats __CONCAT(pfioc_qstats_v, 0) 1941 #define pf_ifspeed __CONCAT(pf_ifspeed_v, 0) 1942 1943 #define DIOCADDALTQ __CONCAT(DIOCADDALTQV, 0) 1944 #define DIOCGETALTQS __CONCAT(DIOCGETALTQSV, 0) 1945 #define DIOCGETALTQ __CONCAT(DIOCGETALTQV, 0) 1946 #define DIOCCHANGEALTQ __CONCAT(DIOCCHANGEALTQV, 0) 1947 #define DIOCGETQSTATS __CONCAT(DIOCGETQSTATSV, 0) 1948 #define DIOCGIFSPEED __CONCAT(DIOCGIFSPEEDV, 0) 1949 #endif /* PFIOC_USE_LATEST */ 1950 #endif /* _KERNEL */ 1951 1952 #ifdef _KERNEL 1953 LIST_HEAD(pf_ksrc_node_list, pf_ksrc_node); 1954 struct pf_srchash { 1955 struct pf_ksrc_node_list nodes; 1956 struct mtx lock; 1957 }; 1958 1959 struct pf_keyhash { 1960 LIST_HEAD(, pf_state_key) keys; 1961 struct mtx lock; 1962 }; 1963 1964 struct pf_idhash { 1965 LIST_HEAD(, pf_kstate) states; 1966 struct mtx lock; 1967 }; 1968 1969 extern u_long pf_ioctl_maxcount; 1970 extern u_long pf_hashmask; 1971 extern u_long pf_srchashmask; 1972 #define PF_HASHSIZ (131072) 1973 #define PF_SRCHASHSIZ (PF_HASHSIZ/4) 1974 VNET_DECLARE(struct pf_keyhash *, pf_keyhash); 1975 VNET_DECLARE(struct pf_idhash *, pf_idhash); 1976 #define V_pf_keyhash VNET(pf_keyhash) 1977 #define V_pf_idhash VNET(pf_idhash) 1978 VNET_DECLARE(struct pf_srchash *, pf_srchash); 1979 #define V_pf_srchash VNET(pf_srchash) 1980 1981 #define PF_IDHASH(s) (be64toh((s)->id) % (pf_hashmask + 1)) 1982 1983 VNET_DECLARE(void *, pf_swi_cookie); 1984 #define V_pf_swi_cookie VNET(pf_swi_cookie) 1985 VNET_DECLARE(struct intr_event *, pf_swi_ie); 1986 #define V_pf_swi_ie VNET(pf_swi_ie) 1987 1988 VNET_DECLARE(uint64_t, pf_stateid[MAXCPU]); 1989 #define V_pf_stateid VNET(pf_stateid) 1990 1991 TAILQ_HEAD(pf_altqqueue, pf_altq); 1992 VNET_DECLARE(struct pf_altqqueue, pf_altqs[4]); 1993 #define V_pf_altqs VNET(pf_altqs) 1994 VNET_DECLARE(struct pf_kpalist, pf_pabuf); 1995 #define V_pf_pabuf VNET(pf_pabuf) 1996 1997 VNET_DECLARE(u_int32_t, ticket_altqs_active); 1998 #define V_ticket_altqs_active VNET(ticket_altqs_active) 1999 VNET_DECLARE(u_int32_t, ticket_altqs_inactive); 2000 #define V_ticket_altqs_inactive VNET(ticket_altqs_inactive) 2001 VNET_DECLARE(int, altqs_inactive_open); 2002 #define V_altqs_inactive_open VNET(altqs_inactive_open) 2003 VNET_DECLARE(u_int32_t, ticket_pabuf); 2004 #define V_ticket_pabuf VNET(ticket_pabuf) 2005 VNET_DECLARE(struct pf_altqqueue *, pf_altqs_active); 2006 #define V_pf_altqs_active VNET(pf_altqs_active) 2007 VNET_DECLARE(struct pf_altqqueue *, pf_altq_ifs_active); 2008 #define V_pf_altq_ifs_active VNET(pf_altq_ifs_active) 2009 VNET_DECLARE(struct pf_altqqueue *, pf_altqs_inactive); 2010 #define V_pf_altqs_inactive VNET(pf_altqs_inactive) 2011 VNET_DECLARE(struct pf_altqqueue *, pf_altq_ifs_inactive); 2012 #define V_pf_altq_ifs_inactive VNET(pf_altq_ifs_inactive) 2013 2014 VNET_DECLARE(struct pf_krulequeue, pf_unlinked_rules); 2015 #define V_pf_unlinked_rules VNET(pf_unlinked_rules) 2016 2017 #ifdef PF_WANT_32_TO_64_COUNTER 2018 LIST_HEAD(allkiflist_head, pfi_kkif); 2019 VNET_DECLARE(struct allkiflist_head, pf_allkiflist); 2020 #define V_pf_allkiflist VNET(pf_allkiflist) 2021 VNET_DECLARE(size_t, pf_allkifcount); 2022 #define V_pf_allkifcount VNET(pf_allkifcount) 2023 VNET_DECLARE(struct pfi_kkif *, pf_kifmarker); 2024 #define V_pf_kifmarker VNET(pf_kifmarker) 2025 2026 LIST_HEAD(allrulelist_head, pf_krule); 2027 VNET_DECLARE(struct allrulelist_head, pf_allrulelist); 2028 #define V_pf_allrulelist VNET(pf_allrulelist) 2029 VNET_DECLARE(size_t, pf_allrulecount); 2030 #define V_pf_allrulecount VNET(pf_allrulecount) 2031 VNET_DECLARE(struct pf_krule *, pf_rulemarker); 2032 #define V_pf_rulemarker VNET(pf_rulemarker) 2033 #endif 2034 2035 void pf_initialize(void); 2036 void pf_mtag_initialize(void); 2037 void pf_mtag_cleanup(void); 2038 void pf_cleanup(void); 2039 2040 struct pf_mtag *pf_get_mtag(struct mbuf *); 2041 2042 extern void pf_calc_skip_steps(struct pf_krulequeue *); 2043 #ifdef ALTQ 2044 extern void pf_altq_ifnet_event(struct ifnet *, int); 2045 #endif 2046 VNET_DECLARE(uma_zone_t, pf_state_z); 2047 #define V_pf_state_z VNET(pf_state_z) 2048 VNET_DECLARE(uma_zone_t, pf_state_key_z); 2049 #define V_pf_state_key_z VNET(pf_state_key_z) 2050 VNET_DECLARE(uma_zone_t, pf_state_scrub_z); 2051 #define V_pf_state_scrub_z VNET(pf_state_scrub_z) 2052 2053 extern void pf_purge_thread(void *); 2054 extern void pf_unload_vnet_purge(void); 2055 extern void pf_intr(void *); 2056 extern void pf_purge_expired_src_nodes(void); 2057 2058 extern int pf_unlink_state(struct pf_kstate *); 2059 extern int pf_state_insert(struct pfi_kkif *, 2060 struct pfi_kkif *, 2061 struct pf_state_key *, 2062 struct pf_state_key *, 2063 struct pf_kstate *); 2064 extern struct pf_kstate *pf_alloc_state(int); 2065 extern void pf_free_state(struct pf_kstate *); 2066 2067 static __inline void 2068 pf_ref_state(struct pf_kstate *s) 2069 { 2070 2071 refcount_acquire(&s->refs); 2072 } 2073 2074 static __inline int 2075 pf_release_state(struct pf_kstate *s) 2076 { 2077 2078 if (refcount_release(&s->refs)) { 2079 pf_free_state(s); 2080 return (1); 2081 } else 2082 return (0); 2083 } 2084 2085 static __inline int 2086 pf_release_staten(struct pf_kstate *s, u_int n) 2087 { 2088 2089 if (refcount_releasen(&s->refs, n)) { 2090 pf_free_state(s); 2091 return (1); 2092 } else 2093 return (0); 2094 } 2095 2096 extern struct pf_kstate *pf_find_state_byid(uint64_t, uint32_t); 2097 extern struct pf_kstate *pf_find_state_all(struct pf_state_key_cmp *, 2098 u_int, int *); 2099 extern bool pf_find_state_all_exists(struct pf_state_key_cmp *, 2100 u_int); 2101 extern struct pf_ksrc_node *pf_find_src_node(struct pf_addr *, 2102 struct pf_krule *, sa_family_t, int); 2103 extern void pf_unlink_src_node(struct pf_ksrc_node *); 2104 extern u_int pf_free_src_nodes(struct pf_ksrc_node_list *); 2105 extern void pf_print_state(struct pf_kstate *); 2106 extern void pf_print_flags(u_int8_t); 2107 extern u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t, 2108 u_int8_t); 2109 extern u_int16_t pf_proto_cksum_fixup(struct mbuf *, u_int16_t, 2110 u_int16_t, u_int16_t, u_int8_t); 2111 2112 VNET_DECLARE(struct ifnet *, sync_ifp); 2113 #define V_sync_ifp VNET(sync_ifp); 2114 VNET_DECLARE(struct pf_krule, pf_default_rule); 2115 #define V_pf_default_rule VNET(pf_default_rule) 2116 extern void pf_addrcpy(struct pf_addr *, struct pf_addr *, 2117 u_int8_t); 2118 void pf_free_rule(struct pf_krule *); 2119 2120 int pf_test_eth(int, int, struct ifnet *, struct mbuf **, struct inpcb *); 2121 #ifdef INET 2122 int pf_test(int, int, struct ifnet *, struct mbuf **, struct inpcb *); 2123 int pf_normalize_ip(struct mbuf **, int, struct pfi_kkif *, u_short *, 2124 struct pf_pdesc *); 2125 #endif /* INET */ 2126 2127 #ifdef INET6 2128 int pf_test6(int, int, struct ifnet *, struct mbuf **, struct inpcb *); 2129 int pf_normalize_ip6(struct mbuf **, int, struct pfi_kkif *, u_short *, 2130 struct pf_pdesc *); 2131 void pf_poolmask(struct pf_addr *, struct pf_addr*, 2132 struct pf_addr *, struct pf_addr *, u_int8_t); 2133 void pf_addr_inc(struct pf_addr *, sa_family_t); 2134 int pf_refragment6(struct ifnet *, struct mbuf **, struct m_tag *); 2135 #endif /* INET6 */ 2136 2137 u_int32_t pf_new_isn(struct pf_kstate *); 2138 void *pf_pull_hdr(struct mbuf *, int, void *, int, u_short *, u_short *, 2139 sa_family_t); 2140 void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t); 2141 void pf_change_proto_a(struct mbuf *, void *, u_int16_t *, u_int32_t, 2142 u_int8_t); 2143 void pf_change_tcp_a(struct mbuf *, void *, u_int16_t *, u_int32_t); 2144 void pf_patch_16_unaligned(struct mbuf *, u_int16_t *, void *, u_int16_t, 2145 bool, u_int8_t); 2146 void pf_patch_32_unaligned(struct mbuf *, u_int16_t *, void *, u_int32_t, 2147 bool, u_int8_t); 2148 void pf_send_deferred_syn(struct pf_kstate *); 2149 int pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *, 2150 struct pf_addr *, sa_family_t); 2151 int pf_match_addr_range(struct pf_addr *, struct pf_addr *, 2152 struct pf_addr *, sa_family_t); 2153 int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t); 2154 2155 void pf_normalize_init(void); 2156 void pf_normalize_cleanup(void); 2157 int pf_normalize_tcp(int, struct pfi_kkif *, struct mbuf *, int, int, void *, 2158 struct pf_pdesc *); 2159 void pf_normalize_tcp_cleanup(struct pf_kstate *); 2160 int pf_normalize_tcp_init(struct mbuf *, int, struct pf_pdesc *, 2161 struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *); 2162 int pf_normalize_tcp_stateful(struct mbuf *, int, struct pf_pdesc *, 2163 u_short *, struct tcphdr *, struct pf_kstate *, 2164 struct pf_state_peer *, struct pf_state_peer *, int *); 2165 u_int32_t 2166 pf_state_expires(const struct pf_kstate *); 2167 void pf_purge_expired_fragments(void); 2168 void pf_purge_fragments(uint32_t); 2169 int pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kkif *, 2170 int); 2171 int pf_socket_lookup(int, struct pf_pdesc *, struct mbuf *); 2172 struct pf_state_key *pf_alloc_state_key(int); 2173 void pfr_initialize(void); 2174 void pfr_cleanup(void); 2175 int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t); 2176 void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t, 2177 u_int64_t, int, int, int); 2178 int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, sa_family_t); 2179 void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *); 2180 struct pfr_ktable * 2181 pfr_attach_table(struct pf_kruleset *, char *); 2182 struct pfr_ktable * 2183 pfr_eth_attach_table(struct pf_keth_ruleset *, char *); 2184 void pfr_detach_table(struct pfr_ktable *); 2185 int pfr_clr_tables(struct pfr_table *, int *, int); 2186 int pfr_add_tables(struct pfr_table *, int, int *, int); 2187 int pfr_del_tables(struct pfr_table *, int, int *, int); 2188 int pfr_table_count(struct pfr_table *, int); 2189 int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int); 2190 int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int); 2191 int pfr_clr_tstats(struct pfr_table *, int, int *, int); 2192 int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int); 2193 int pfr_clr_addrs(struct pfr_table *, int *, int); 2194 int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *, long); 2195 int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 2196 int); 2197 int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 2198 int); 2199 int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 2200 int *, int *, int *, int, u_int32_t); 2201 int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int); 2202 int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int); 2203 int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *, 2204 int); 2205 int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 2206 int); 2207 int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int); 2208 int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int); 2209 int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int); 2210 int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *, 2211 int *, u_int32_t, int); 2212 2213 MALLOC_DECLARE(PFI_MTYPE); 2214 VNET_DECLARE(struct pfi_kkif *, pfi_all); 2215 #define V_pfi_all VNET(pfi_all) 2216 2217 void pfi_initialize(void); 2218 void pfi_initialize_vnet(void); 2219 void pfi_cleanup(void); 2220 void pfi_cleanup_vnet(void); 2221 void pfi_kkif_ref(struct pfi_kkif *); 2222 void pfi_kkif_unref(struct pfi_kkif *); 2223 struct pfi_kkif *pfi_kkif_find(const char *); 2224 struct pfi_kkif *pfi_kkif_attach(struct pfi_kkif *, const char *); 2225 int pfi_kkif_match(struct pfi_kkif *, struct pfi_kkif *); 2226 void pfi_kkif_purge(void); 2227 int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *, 2228 sa_family_t); 2229 int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t); 2230 void pfi_dynaddr_remove(struct pfi_dynaddr *); 2231 void pfi_dynaddr_copyout(struct pf_addr_wrap *); 2232 void pfi_update_status(const char *, struct pf_status *); 2233 void pfi_get_ifaces(const char *, struct pfi_kif *, int *); 2234 int pfi_set_flags(const char *, int); 2235 int pfi_clear_flags(const char *, int); 2236 2237 int pf_match_tag(struct mbuf *, struct pf_krule *, int *, int); 2238 int pf_tag_packet(struct mbuf *, struct pf_pdesc *, int); 2239 int pf_addr_cmp(struct pf_addr *, struct pf_addr *, 2240 sa_family_t); 2241 2242 u_int16_t pf_get_mss(struct mbuf *, int, u_int16_t, sa_family_t); 2243 u_int8_t pf_get_wscale(struct mbuf *, int, u_int16_t, sa_family_t); 2244 struct mbuf *pf_build_tcp(const struct pf_krule *, sa_family_t, 2245 const struct pf_addr *, const struct pf_addr *, 2246 u_int16_t, u_int16_t, u_int32_t, u_int32_t, 2247 u_int8_t, u_int16_t, u_int16_t, u_int8_t, int, 2248 u_int16_t); 2249 void pf_send_tcp(const struct pf_krule *, sa_family_t, 2250 const struct pf_addr *, const struct pf_addr *, 2251 u_int16_t, u_int16_t, u_int32_t, u_int32_t, 2252 u_int8_t, u_int16_t, u_int16_t, u_int8_t, int, 2253 u_int16_t); 2254 2255 void pf_syncookies_init(void); 2256 void pf_syncookies_cleanup(void); 2257 int pf_get_syncookies(struct pfioc_nv *); 2258 int pf_set_syncookies(struct pfioc_nv *); 2259 int pf_synflood_check(struct pf_pdesc *); 2260 void pf_syncookie_send(struct mbuf *m, int off, 2261 struct pf_pdesc *); 2262 u_int8_t pf_syncookie_validate(struct pf_pdesc *); 2263 struct mbuf * pf_syncookie_recreate_syn(uint8_t, int, 2264 struct pf_pdesc *); 2265 2266 VNET_DECLARE(struct pf_kstatus, pf_status); 2267 #define V_pf_status VNET(pf_status) 2268 2269 struct pf_limit { 2270 uma_zone_t zone; 2271 u_int limit; 2272 }; 2273 VNET_DECLARE(struct pf_limit, pf_limits[PF_LIMIT_MAX]); 2274 #define V_pf_limits VNET(pf_limits) 2275 2276 #endif /* _KERNEL */ 2277 2278 #ifdef _KERNEL 2279 VNET_DECLARE(struct pf_kanchor_global, pf_anchors); 2280 #define V_pf_anchors VNET(pf_anchors) 2281 VNET_DECLARE(struct pf_kanchor, pf_main_anchor); 2282 #define V_pf_main_anchor VNET(pf_main_anchor) 2283 VNET_DECLARE(struct pf_keth_anchor_global, pf_keth_anchors); 2284 #define V_pf_keth_anchors VNET(pf_keth_anchors) 2285 #define pf_main_ruleset V_pf_main_anchor.ruleset 2286 2287 VNET_DECLARE(struct pf_keth_anchor, pf_main_keth_anchor); 2288 #define V_pf_main_keth_anchor VNET(pf_main_keth_anchor) 2289 VNET_DECLARE(struct pf_keth_ruleset*, pf_keth); 2290 #define V_pf_keth VNET(pf_keth) 2291 2292 void pf_init_kruleset(struct pf_kruleset *); 2293 void pf_init_keth(struct pf_keth_ruleset *); 2294 int pf_kanchor_setup(struct pf_krule *, 2295 const struct pf_kruleset *, const char *); 2296 int pf_kanchor_nvcopyout(const struct pf_kruleset *, 2297 const struct pf_krule *, nvlist_t *); 2298 int pf_kanchor_copyout(const struct pf_kruleset *, 2299 const struct pf_krule *, struct pfioc_rule *); 2300 void pf_kanchor_remove(struct pf_krule *); 2301 void pf_remove_if_empty_kruleset(struct pf_kruleset *); 2302 struct pf_kruleset *pf_find_kruleset(const char *); 2303 struct pf_kruleset *pf_find_or_create_kruleset(const char *); 2304 void pf_rs_initialize(void); 2305 2306 2307 struct pf_krule *pf_krule_alloc(void); 2308 2309 void pf_remove_if_empty_keth_ruleset( 2310 struct pf_keth_ruleset *); 2311 struct pf_keth_ruleset *pf_find_keth_ruleset(const char *); 2312 struct pf_keth_anchor *pf_find_keth_anchor(const char *); 2313 int pf_keth_anchor_setup(struct pf_keth_rule *, 2314 const struct pf_keth_ruleset *, const char *); 2315 int pf_keth_anchor_nvcopyout( 2316 const struct pf_keth_ruleset *, 2317 const struct pf_keth_rule *, nvlist_t *); 2318 struct pf_keth_ruleset *pf_find_or_create_keth_ruleset(const char *); 2319 void pf_keth_anchor_remove(struct pf_keth_rule *); 2320 2321 void pf_krule_free(struct pf_krule *); 2322 #endif 2323 2324 /* The fingerprint functions can be linked into userland programs (tcpdump) */ 2325 int pf_osfp_add(struct pf_osfp_ioctl *); 2326 #ifdef _KERNEL 2327 struct pf_osfp_enlist * 2328 pf_osfp_fingerprint(struct pf_pdesc *, struct mbuf *, int, 2329 const struct tcphdr *); 2330 #endif /* _KERNEL */ 2331 void pf_osfp_flush(void); 2332 int pf_osfp_get(struct pf_osfp_ioctl *); 2333 int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t); 2334 2335 #ifdef _KERNEL 2336 void pf_print_host(struct pf_addr *, u_int16_t, u_int8_t); 2337 2338 void pf_step_into_anchor(struct pf_kanchor_stackframe *, int *, 2339 struct pf_kruleset **, int, struct pf_krule **, 2340 struct pf_krule **, int *); 2341 int pf_step_out_of_anchor(struct pf_kanchor_stackframe *, int *, 2342 struct pf_kruleset **, int, struct pf_krule **, 2343 struct pf_krule **, int *); 2344 void pf_step_into_keth_anchor(struct pf_keth_anchor_stackframe *, 2345 int *, struct pf_keth_ruleset **, 2346 struct pf_keth_rule **, struct pf_keth_rule **, 2347 int *); 2348 int pf_step_out_of_keth_anchor(struct pf_keth_anchor_stackframe *, 2349 int *, struct pf_keth_ruleset **, 2350 struct pf_keth_rule **, struct pf_keth_rule **, 2351 int *); 2352 2353 int pf_map_addr(u_int8_t, struct pf_krule *, 2354 struct pf_addr *, struct pf_addr *, 2355 struct pf_addr *, struct pf_ksrc_node **); 2356 struct pf_krule *pf_get_translation(struct pf_pdesc *, struct mbuf *, 2357 int, int, struct pfi_kkif *, struct pf_ksrc_node **, 2358 struct pf_state_key **, struct pf_state_key **, 2359 struct pf_addr *, struct pf_addr *, 2360 uint16_t, uint16_t, struct pf_kanchor_stackframe *); 2361 2362 struct pf_state_key *pf_state_key_setup(struct pf_pdesc *, struct pf_addr *, 2363 struct pf_addr *, u_int16_t, u_int16_t); 2364 struct pf_state_key *pf_state_key_clone(struct pf_state_key *); 2365 2366 struct pfi_kkif *pf_kkif_create(int); 2367 void pf_kkif_free(struct pfi_kkif *); 2368 void pf_kkif_zero(struct pfi_kkif *); 2369 #endif /* _KERNEL */ 2370 2371 #endif /* _NET_PFVAR_H_ */ 2372