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