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 SYSCTL_DECL(_net_pf); 290 MALLOC_DECLARE(M_PFHASH); 291 292 SDT_PROVIDER_DECLARE(pf); 293 294 struct pfi_dynaddr { 295 TAILQ_ENTRY(pfi_dynaddr) entry; 296 struct pf_addr pfid_addr4; 297 struct pf_addr pfid_mask4; 298 struct pf_addr pfid_addr6; 299 struct pf_addr pfid_mask6; 300 struct pfr_ktable *pfid_kt; 301 struct pfi_kkif *pfid_kif; 302 int pfid_net; /* mask or 128 */ 303 int pfid_acnt4; /* address count IPv4 */ 304 int pfid_acnt6; /* address count IPv6 */ 305 sa_family_t pfid_af; /* rule af */ 306 u_int8_t pfid_iflags; /* PFI_AFLAG_* */ 307 }; 308 309 /* 310 * Address manipulation macros 311 */ 312 #define HTONL(x) (x) = htonl((__uint32_t)(x)) 313 #define HTONS(x) (x) = htons((__uint16_t)(x)) 314 #define NTOHL(x) (x) = ntohl((__uint32_t)(x)) 315 #define NTOHS(x) (x) = ntohs((__uint16_t)(x)) 316 317 #define PF_NAME "pf" 318 319 #define PF_HASHROW_ASSERT(h) mtx_assert(&(h)->lock, MA_OWNED) 320 #define PF_HASHROW_LOCK(h) mtx_lock(&(h)->lock) 321 #define PF_HASHROW_UNLOCK(h) mtx_unlock(&(h)->lock) 322 323 #ifdef INVARIANTS 324 #define PF_STATE_LOCK(s) \ 325 do { \ 326 struct pf_kstate *_s = (s); \ 327 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(_s)]; \ 328 MPASS(_s->lock == &_ih->lock); \ 329 mtx_lock(_s->lock); \ 330 } while (0) 331 #define PF_STATE_UNLOCK(s) \ 332 do { \ 333 struct pf_kstate *_s = (s); \ 334 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(_s)]; \ 335 MPASS(_s->lock == &_ih->lock); \ 336 mtx_unlock(_s->lock); \ 337 } while (0) 338 #else 339 #define PF_STATE_LOCK(s) mtx_lock(s->lock) 340 #define PF_STATE_UNLOCK(s) mtx_unlock(s->lock) 341 #endif 342 343 #ifdef INVARIANTS 344 #define PF_STATE_LOCK_ASSERT(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 PF_HASHROW_ASSERT(_ih); \ 350 } while (0) 351 #else /* !INVARIANTS */ 352 #define PF_STATE_LOCK_ASSERT(s) do {} while (0) 353 #endif /* INVARIANTS */ 354 355 extern struct mtx_padalign pf_unlnkdrules_mtx; 356 #define PF_UNLNKDRULES_LOCK() mtx_lock(&pf_unlnkdrules_mtx) 357 #define PF_UNLNKDRULES_UNLOCK() mtx_unlock(&pf_unlnkdrules_mtx) 358 359 extern struct rmlock pf_rules_lock; 360 #define PF_RULES_RLOCK_TRACKER struct rm_priotracker _pf_rules_tracker 361 #define PF_RULES_RLOCK() rm_rlock(&pf_rules_lock, &_pf_rules_tracker) 362 #define PF_RULES_RUNLOCK() rm_runlock(&pf_rules_lock, &_pf_rules_tracker) 363 #define PF_RULES_WLOCK() rm_wlock(&pf_rules_lock) 364 #define PF_RULES_WUNLOCK() rm_wunlock(&pf_rules_lock) 365 #define PF_RULES_WOWNED() rm_wowned(&pf_rules_lock) 366 #define PF_RULES_ASSERT() rm_assert(&pf_rules_lock, RA_LOCKED) 367 #define PF_RULES_RASSERT() rm_assert(&pf_rules_lock, RA_RLOCKED) 368 #define PF_RULES_WASSERT() rm_assert(&pf_rules_lock, RA_WLOCKED) 369 370 extern struct mtx_padalign pf_table_stats_lock; 371 #define PF_TABLE_STATS_LOCK() mtx_lock(&pf_table_stats_lock) 372 #define PF_TABLE_STATS_UNLOCK() mtx_unlock(&pf_table_stats_lock) 373 #define PF_TABLE_STATS_OWNED() mtx_owned(&pf_table_stats_lock) 374 #define PF_TABLE_STATS_ASSERT() mtx_assert(&pf_rules_lock, MA_OWNED) 375 376 extern struct sx pf_end_lock; 377 378 #define PF_MODVER 1 379 #define PFLOG_MODVER 1 380 #define PFSYNC_MODVER 1 381 382 #define PFLOG_MINVER 1 383 #define PFLOG_PREFVER PFLOG_MODVER 384 #define PFLOG_MAXVER 1 385 #define PFSYNC_MINVER 1 386 #define PFSYNC_PREFVER PFSYNC_MODVER 387 #define PFSYNC_MAXVER 1 388 389 #ifdef INET 390 #ifndef INET6 391 #define PF_INET_ONLY 392 #endif /* ! INET6 */ 393 #endif /* INET */ 394 395 #ifdef INET6 396 #ifndef INET 397 #define PF_INET6_ONLY 398 #endif /* ! INET */ 399 #endif /* INET6 */ 400 401 #ifdef INET 402 #ifdef INET6 403 #define PF_INET_INET6 404 #endif /* INET6 */ 405 #endif /* INET */ 406 407 #else 408 409 #define PF_INET_INET6 410 411 #endif /* _KERNEL */ 412 413 /* Both IPv4 and IPv6 */ 414 #ifdef PF_INET_INET6 415 416 #define PF_AEQ(a, b, c) \ 417 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \ 418 (c == AF_INET6 && (a)->addr32[3] == (b)->addr32[3] && \ 419 (a)->addr32[2] == (b)->addr32[2] && \ 420 (a)->addr32[1] == (b)->addr32[1] && \ 421 (a)->addr32[0] == (b)->addr32[0])) \ 422 423 #define PF_ANEQ(a, b, c) \ 424 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \ 425 (c == AF_INET6 && ((a)->addr32[0] != (b)->addr32[0] || \ 426 (a)->addr32[1] != (b)->addr32[1] || \ 427 (a)->addr32[2] != (b)->addr32[2] || \ 428 (a)->addr32[3] != (b)->addr32[3]))) \ 429 430 #define PF_AZERO(a, c) \ 431 ((c == AF_INET && !(a)->addr32[0]) || \ 432 (c == AF_INET6 && !(a)->addr32[0] && !(a)->addr32[1] && \ 433 !(a)->addr32[2] && !(a)->addr32[3] )) \ 434 435 #define PF_MATCHA(n, a, m, b, f) \ 436 pf_match_addr(n, a, m, b, f) 437 438 #define PF_ACPY(a, b, f) \ 439 pf_addrcpy(a, b, f) 440 441 #define PF_AINC(a, f) \ 442 pf_addr_inc(a, f) 443 444 #define PF_POOLMASK(a, b, c, d, f) \ 445 pf_poolmask(a, b, c, d, f) 446 447 #else 448 449 /* Just IPv6 */ 450 451 #ifdef PF_INET6_ONLY 452 453 #define PF_AEQ(a, b, c) \ 454 ((a)->addr32[3] == (b)->addr32[3] && \ 455 (a)->addr32[2] == (b)->addr32[2] && \ 456 (a)->addr32[1] == (b)->addr32[1] && \ 457 (a)->addr32[0] == (b)->addr32[0]) \ 458 459 #define PF_ANEQ(a, b, c) \ 460 ((a)->addr32[3] != (b)->addr32[3] || \ 461 (a)->addr32[2] != (b)->addr32[2] || \ 462 (a)->addr32[1] != (b)->addr32[1] || \ 463 (a)->addr32[0] != (b)->addr32[0]) \ 464 465 #define PF_AZERO(a, c) \ 466 (!(a)->addr32[0] && \ 467 !(a)->addr32[1] && \ 468 !(a)->addr32[2] && \ 469 !(a)->addr32[3] ) \ 470 471 #define PF_MATCHA(n, a, m, b, f) \ 472 pf_match_addr(n, a, m, b, f) 473 474 #define PF_ACPY(a, b, f) \ 475 pf_addrcpy(a, b, f) 476 477 #define PF_AINC(a, f) \ 478 pf_addr_inc(a, f) 479 480 #define PF_POOLMASK(a, b, c, d, f) \ 481 pf_poolmask(a, b, c, d, f) 482 483 #else 484 485 /* Just IPv4 */ 486 #ifdef PF_INET_ONLY 487 488 #define PF_AEQ(a, b, c) \ 489 ((a)->addr32[0] == (b)->addr32[0]) 490 491 #define PF_ANEQ(a, b, c) \ 492 ((a)->addr32[0] != (b)->addr32[0]) 493 494 #define PF_AZERO(a, c) \ 495 (!(a)->addr32[0]) 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 (a)->v4.s_addr = (b)->v4.s_addr 502 503 #define PF_AINC(a, f) \ 504 do { \ 505 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \ 506 } while (0) 507 508 #define PF_POOLMASK(a, b, c, d, f) \ 509 do { \ 510 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \ 511 (((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \ 512 } while (0) 513 514 #endif /* PF_INET_ONLY */ 515 #endif /* PF_INET6_ONLY */ 516 #endif /* PF_INET_INET6 */ 517 518 /* 519 * XXX callers not FIB-aware in our version of pf yet. 520 * OpenBSD fixed it later it seems, 2010/05/07 13:33:16 claudio. 521 */ 522 #define PF_MISMATCHAW(aw, x, af, neg, ifp, rtid) \ 523 ( \ 524 (((aw)->type == PF_ADDR_NOROUTE && \ 525 pf_routable((x), (af), NULL, (rtid))) || \ 526 (((aw)->type == PF_ADDR_URPFFAILED && (ifp) != NULL && \ 527 pf_routable((x), (af), (ifp), (rtid))) || \ 528 ((aw)->type == PF_ADDR_TABLE && \ 529 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \ 530 ((aw)->type == PF_ADDR_DYNIFTL && \ 531 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \ 532 ((aw)->type == PF_ADDR_RANGE && \ 533 !pf_match_addr_range(&(aw)->v.a.addr, \ 534 &(aw)->v.a.mask, (x), (af))) || \ 535 ((aw)->type == PF_ADDR_ADDRMASK && \ 536 !PF_AZERO(&(aw)->v.a.mask, (af)) && \ 537 !PF_MATCHA(0, &(aw)->v.a.addr, \ 538 &(aw)->v.a.mask, (x), (af))))) != \ 539 (neg) \ 540 ) 541 542 #define PF_ALGNMNT(off) (((off) % 2) == 0) 543 544 #ifdef _KERNEL 545 546 struct pf_kpooladdr { 547 struct pf_addr_wrap addr; 548 TAILQ_ENTRY(pf_kpooladdr) entries; 549 char ifname[IFNAMSIZ]; 550 struct pfi_kkif *kif; 551 }; 552 553 TAILQ_HEAD(pf_kpalist, pf_kpooladdr); 554 555 struct pf_kpool { 556 struct mtx mtx; 557 struct pf_kpalist list; 558 struct pf_kpooladdr *cur; 559 struct pf_poolhashkey key; 560 struct pf_addr counter; 561 struct pf_mape_portset mape; 562 int tblidx; 563 u_int16_t proxy_port[2]; 564 u_int8_t opts; 565 }; 566 567 struct pf_rule_actions { 568 uint16_t qid; 569 uint16_t pqid; 570 uint16_t dnpipe; 571 uint16_t dnrpipe; /* Reverse direction pipe */ 572 uint32_t flags; 573 }; 574 575 union pf_keth_rule_ptr { 576 struct pf_keth_rule *ptr; 577 uint32_t nr; 578 }; 579 580 struct pf_keth_rule_addr { 581 uint8_t addr[ETHER_ADDR_LEN]; 582 uint8_t mask[ETHER_ADDR_LEN]; 583 bool neg; 584 uint8_t isset; 585 }; 586 587 struct pf_keth_anchor; 588 589 TAILQ_HEAD(pf_keth_ruleq, pf_keth_rule); 590 591 struct pf_keth_ruleset { 592 struct pf_keth_ruleq rules[2]; 593 struct pf_keth_rules { 594 struct pf_keth_ruleq *rules; 595 int open; 596 uint32_t ticket; 597 } active, inactive; 598 struct epoch_context epoch_ctx; 599 struct vnet *vnet; 600 struct pf_keth_anchor *anchor; 601 }; 602 603 RB_HEAD(pf_keth_anchor_global, pf_keth_anchor); 604 RB_HEAD(pf_keth_anchor_node, pf_keth_anchor); 605 struct pf_keth_anchor { 606 RB_ENTRY(pf_keth_anchor) entry_node; 607 RB_ENTRY(pf_keth_anchor) entry_global; 608 struct pf_keth_anchor *parent; 609 struct pf_keth_anchor_node children; 610 char name[PF_ANCHOR_NAME_SIZE]; 611 char path[MAXPATHLEN]; 612 struct pf_keth_ruleset ruleset; 613 int refcnt; /* anchor rules */ 614 uint8_t anchor_relative; 615 uint8_t anchor_wildcard; 616 }; 617 RB_PROTOTYPE(pf_keth_anchor_node, pf_keth_anchor, entry_node, 618 pf_keth_anchor_compare); 619 RB_PROTOTYPE(pf_keth_anchor_global, pf_keth_anchor, entry_global, 620 pf_keth_anchor_compare); 621 622 struct pf_keth_rule { 623 #define PFE_SKIP_IFP 0 624 #define PFE_SKIP_DIR 1 625 #define PFE_SKIP_PROTO 2 626 #define PFE_SKIP_SRC_ADDR 3 627 #define PFE_SKIP_DST_ADDR 4 628 #define PFE_SKIP_COUNT 5 629 union pf_keth_rule_ptr skip[PFE_SKIP_COUNT]; 630 631 TAILQ_ENTRY(pf_keth_rule) entries; 632 633 struct pf_keth_anchor *anchor; 634 u_int8_t anchor_relative; 635 u_int8_t anchor_wildcard; 636 637 uint32_t nr; 638 639 bool quick; 640 641 /* Filter */ 642 char ifname[IFNAMSIZ]; 643 struct pfi_kkif *kif; 644 bool ifnot; 645 uint8_t direction; 646 uint16_t proto; 647 struct pf_keth_rule_addr src, dst; 648 649 /* Stats */ 650 counter_u64_t evaluations; 651 counter_u64_t packets[2]; 652 counter_u64_t bytes[2]; 653 654 /* Action */ 655 char qname[PF_QNAME_SIZE]; 656 int qid; 657 char tagname[PF_TAG_NAME_SIZE]; 658 uint16_t tag; 659 uint8_t action; 660 uint16_t dnpipe; 661 uint32_t dnflags; 662 }; 663 664 union pf_krule_ptr { 665 struct pf_krule *ptr; 666 u_int32_t nr; 667 }; 668 669 struct pf_krule { 670 struct pf_rule_addr src; 671 struct pf_rule_addr dst; 672 union pf_krule_ptr skip[PF_SKIP_COUNT]; 673 char label[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE]; 674 uint32_t ridentifier; 675 char ifname[IFNAMSIZ]; 676 char qname[PF_QNAME_SIZE]; 677 char pqname[PF_QNAME_SIZE]; 678 char tagname[PF_TAG_NAME_SIZE]; 679 char match_tagname[PF_TAG_NAME_SIZE]; 680 681 char overload_tblname[PF_TABLE_NAME_SIZE]; 682 683 TAILQ_ENTRY(pf_krule) entries; 684 struct pf_kpool rpool; 685 686 struct pf_counter_u64 evaluations; 687 struct pf_counter_u64 packets[2]; 688 struct pf_counter_u64 bytes[2]; 689 690 struct pfi_kkif *kif; 691 struct pf_kanchor *anchor; 692 struct pfr_ktable *overload_tbl; 693 694 pf_osfp_t os_fingerprint; 695 696 int rtableid; 697 u_int32_t timeout[PFTM_MAX]; 698 u_int32_t max_states; 699 u_int32_t max_src_nodes; 700 u_int32_t max_src_states; 701 u_int32_t max_src_conn; 702 struct { 703 u_int32_t limit; 704 u_int32_t seconds; 705 } max_src_conn_rate; 706 u_int16_t qid; 707 u_int16_t pqid; 708 u_int16_t dnpipe; 709 u_int16_t dnrpipe; 710 u_int32_t free_flags; 711 u_int32_t nr; 712 u_int32_t prob; 713 uid_t cuid; 714 pid_t cpid; 715 716 counter_u64_t states_cur; 717 counter_u64_t states_tot; 718 counter_u64_t src_nodes; 719 720 u_int16_t return_icmp; 721 u_int16_t return_icmp6; 722 u_int16_t max_mss; 723 u_int16_t tag; 724 u_int16_t match_tag; 725 u_int16_t scrub_flags; 726 727 struct pf_rule_uid uid; 728 struct pf_rule_gid gid; 729 730 u_int32_t rule_flag; 731 uint32_t rule_ref; 732 u_int8_t action; 733 u_int8_t direction; 734 u_int8_t log; 735 u_int8_t logif; 736 u_int8_t quick; 737 u_int8_t ifnot; 738 u_int8_t match_tag_not; 739 u_int8_t natpass; 740 741 u_int8_t keep_state; 742 sa_family_t af; 743 u_int8_t proto; 744 u_int8_t type; 745 u_int8_t code; 746 u_int8_t flags; 747 u_int8_t flagset; 748 u_int8_t min_ttl; 749 u_int8_t allow_opts; 750 u_int8_t rt; 751 u_int8_t return_ttl; 752 u_int8_t tos; 753 u_int8_t set_tos; 754 u_int8_t anchor_relative; 755 u_int8_t anchor_wildcard; 756 757 u_int8_t flush; 758 u_int8_t prio; 759 u_int8_t set_prio[2]; 760 761 struct { 762 struct pf_addr addr; 763 u_int16_t port; 764 } divert; 765 766 #ifdef PF_WANT_32_TO_64_COUNTER 767 LIST_ENTRY(pf_krule) allrulelist; 768 bool allrulelinked; 769 #endif 770 }; 771 772 struct pf_ksrc_node { 773 LIST_ENTRY(pf_ksrc_node) entry; 774 struct pf_addr addr; 775 struct pf_addr raddr; 776 union pf_krule_ptr rule; 777 struct pfi_kkif *kif; 778 counter_u64_t bytes[2]; 779 counter_u64_t packets[2]; 780 u_int32_t states; 781 u_int32_t conn; 782 struct pf_threshold conn_rate; 783 u_int32_t creation; 784 u_int32_t expire; 785 sa_family_t af; 786 u_int8_t ruletype; 787 }; 788 #endif 789 790 struct pf_state_scrub { 791 struct timeval pfss_last; /* time received last packet */ 792 u_int32_t pfss_tsecr; /* last echoed timestamp */ 793 u_int32_t pfss_tsval; /* largest timestamp */ 794 u_int32_t pfss_tsval0; /* original timestamp */ 795 u_int16_t pfss_flags; 796 #define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */ 797 #define PFSS_PAWS 0x0010 /* stricter PAWS checks */ 798 #define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */ 799 #define PFSS_DATA_TS 0x0040 /* timestamp on data packets */ 800 #define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */ 801 u_int8_t pfss_ttl; /* stashed TTL */ 802 u_int8_t pad; 803 u_int32_t pfss_ts_mod; /* timestamp modulation */ 804 }; 805 806 struct pf_state_host { 807 struct pf_addr addr; 808 u_int16_t port; 809 u_int16_t pad; 810 }; 811 812 struct pf_state_peer { 813 struct pf_state_scrub *scrub; /* state is scrubbed */ 814 u_int32_t seqlo; /* Max sequence number sent */ 815 u_int32_t seqhi; /* Max the other end ACKd + win */ 816 u_int32_t seqdiff; /* Sequence number modulator */ 817 u_int16_t max_win; /* largest window (pre scaling) */ 818 u_int16_t mss; /* Maximum segment size option */ 819 u_int8_t state; /* active state level */ 820 u_int8_t wscale; /* window scaling factor */ 821 u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */ 822 u_int8_t pad[1]; 823 }; 824 825 /* Keep synced with struct pf_state_key. */ 826 struct pf_state_key_cmp { 827 struct pf_addr addr[2]; 828 u_int16_t port[2]; 829 sa_family_t af; 830 u_int8_t proto; 831 u_int8_t pad[2]; 832 }; 833 834 struct pf_state_key { 835 struct pf_addr addr[2]; 836 u_int16_t port[2]; 837 sa_family_t af; 838 u_int8_t proto; 839 u_int8_t pad[2]; 840 841 LIST_ENTRY(pf_state_key) entry; 842 TAILQ_HEAD(, pf_kstate) states[2]; 843 }; 844 845 /* Keep synced with struct pf_kstate. */ 846 struct pf_state_cmp { 847 u_int64_t id; 848 u_int32_t creatorid; 849 u_int8_t direction; 850 u_int8_t pad[3]; 851 }; 852 853 #define PFSTATE_ALLOWOPTS 0x01 854 #define PFSTATE_SLOPPY 0x02 855 /* was PFSTATE_PFLOW 0x04 */ 856 #define PFSTATE_NOSYNC 0x08 857 #define PFSTATE_ACK 0x10 858 #define PFRULE_DN_IS_PIPE 0x40 859 #define PFRULE_DN_IS_QUEUE 0x80 860 #define PFSTATE_SETPRIO 0x0200 861 #define PFSTATE_SETMASK (PFSTATE_SETPRIO) 862 863 struct pf_state_scrub_export { 864 uint16_t pfss_flags; 865 uint8_t pfss_ttl; /* stashed TTL */ 866 #define PF_SCRUB_FLAG_VALID 0x01 867 uint8_t scrub_flag; 868 uint32_t pfss_ts_mod; /* timestamp modulation */ 869 }; 870 871 struct pf_state_key_export { 872 struct pf_addr addr[2]; 873 uint16_t port[2]; 874 }; 875 876 struct pf_state_peer_export { 877 struct pf_state_scrub_export scrub; /* state is scrubbed */ 878 uint32_t seqlo; /* Max sequence number sent */ 879 uint32_t seqhi; /* Max the other end ACKd + win */ 880 uint32_t seqdiff; /* Sequence number modulator */ 881 uint16_t max_win; /* largest window (pre scaling) */ 882 uint16_t mss; /* Maximum segment size option */ 883 uint8_t state; /* active state level */ 884 uint8_t wscale; /* window scaling factor */ 885 uint8_t dummy[6]; 886 }; 887 _Static_assert(sizeof(struct pf_state_peer_export) == 32, "size incorrect"); 888 889 struct pf_state_export { 890 uint64_t version; 891 #define PF_STATE_VERSION 20210706 892 uint64_t id; 893 char ifname[IFNAMSIZ]; 894 char orig_ifname[IFNAMSIZ]; 895 struct pf_state_key_export key[2]; 896 struct pf_state_peer_export src; 897 struct pf_state_peer_export dst; 898 struct pf_addr rt_addr; 899 uint32_t rule; 900 uint32_t anchor; 901 uint32_t nat_rule; 902 uint32_t creation; 903 uint32_t expire; 904 uint32_t spare0; 905 uint64_t packets[2]; 906 uint64_t bytes[2]; 907 uint32_t creatorid; 908 uint32_t spare1; 909 sa_family_t af; 910 uint8_t proto; 911 uint8_t direction; 912 uint8_t log; 913 uint8_t state_flags; 914 uint8_t timeout; 915 uint8_t sync_flags; 916 uint8_t updates; 917 918 uint8_t spare[112]; 919 }; 920 _Static_assert(sizeof(struct pf_state_export) == 384, "size incorrect"); 921 922 #ifdef _KERNEL 923 struct pf_kstate { 924 /* 925 * Area shared with pf_state_cmp 926 */ 927 u_int64_t id; 928 u_int32_t creatorid; 929 u_int8_t direction; 930 u_int8_t pad[3]; 931 /* 932 * end of the area 933 */ 934 935 u_int8_t state_flags; 936 u_int8_t timeout; 937 u_int8_t sync_state; /* PFSYNC_S_x */ 938 u_int8_t sync_updates; /* XXX */ 939 u_int refs; 940 struct mtx *lock; 941 TAILQ_ENTRY(pf_kstate) sync_list; 942 TAILQ_ENTRY(pf_kstate) key_list[2]; 943 LIST_ENTRY(pf_kstate) entry; 944 struct pf_state_peer src; 945 struct pf_state_peer dst; 946 union pf_krule_ptr rule; 947 union pf_krule_ptr anchor; 948 union pf_krule_ptr nat_rule; 949 struct pf_addr rt_addr; 950 struct pf_state_key *key[2]; /* addresses stack and wire */ 951 struct pfi_kkif *kif; 952 struct pfi_kkif *orig_kif; /* The real kif, even if we're a floating state (i.e. if == V_pfi_all). */ 953 struct pfi_kkif *rt_kif; 954 struct pf_ksrc_node *src_node; 955 struct pf_ksrc_node *nat_src_node; 956 u_int64_t packets[2]; 957 u_int64_t bytes[2]; 958 u_int32_t creation; 959 u_int32_t expire; 960 u_int32_t pfsync_time; 961 u_int16_t qid; 962 u_int16_t pqid; 963 u_int16_t dnpipe; 964 u_int16_t dnrpipe; 965 u_int16_t tag; 966 u_int8_t log; 967 }; 968 969 /* 970 * Size <= fits 13 objects per page on LP64. Try to not grow the struct beyond that. 971 */ 972 _Static_assert(sizeof(struct pf_kstate) <= 312, "pf_kstate size crosses 312 bytes"); 973 #endif 974 975 /* 976 * Unified state structures for pulling states out of the kernel 977 * used by pfsync(4) and the pf(4) ioctl. 978 */ 979 struct pfsync_state_scrub { 980 u_int16_t pfss_flags; 981 u_int8_t pfss_ttl; /* stashed TTL */ 982 #define PFSYNC_SCRUB_FLAG_VALID 0x01 983 u_int8_t scrub_flag; 984 u_int32_t pfss_ts_mod; /* timestamp modulation */ 985 } __packed; 986 987 struct pfsync_state_peer { 988 struct pfsync_state_scrub scrub; /* state is scrubbed */ 989 u_int32_t seqlo; /* Max sequence number sent */ 990 u_int32_t seqhi; /* Max the other end ACKd + win */ 991 u_int32_t seqdiff; /* Sequence number modulator */ 992 u_int16_t max_win; /* largest window (pre scaling) */ 993 u_int16_t mss; /* Maximum segment size option */ 994 u_int8_t state; /* active state level */ 995 u_int8_t wscale; /* window scaling factor */ 996 u_int8_t pad[6]; 997 } __packed; 998 999 struct pfsync_state_key { 1000 struct pf_addr addr[2]; 1001 u_int16_t port[2]; 1002 }; 1003 1004 struct pfsync_state { 1005 u_int64_t id; 1006 char ifname[IFNAMSIZ]; 1007 struct pfsync_state_key key[2]; 1008 struct pfsync_state_peer src; 1009 struct pfsync_state_peer dst; 1010 struct pf_addr rt_addr; 1011 u_int32_t rule; 1012 u_int32_t anchor; 1013 u_int32_t nat_rule; 1014 u_int32_t creation; 1015 u_int32_t expire; 1016 u_int32_t packets[2][2]; 1017 u_int32_t bytes[2][2]; 1018 u_int32_t creatorid; 1019 sa_family_t af; 1020 u_int8_t proto; 1021 u_int8_t direction; 1022 u_int8_t __spare[2]; 1023 u_int8_t log; 1024 u_int8_t state_flags; 1025 u_int8_t timeout; 1026 u_int8_t sync_flags; 1027 u_int8_t updates; 1028 } __packed; 1029 1030 #ifdef _KERNEL 1031 /* pfsync */ 1032 typedef int pfsync_state_import_t(struct pfsync_state *, u_int8_t); 1033 typedef void pfsync_insert_state_t(struct pf_kstate *); 1034 typedef void pfsync_update_state_t(struct pf_kstate *); 1035 typedef void pfsync_delete_state_t(struct pf_kstate *); 1036 typedef void pfsync_clear_states_t(u_int32_t, const char *); 1037 typedef int pfsync_defer_t(struct pf_kstate *, struct mbuf *); 1038 typedef void pfsync_detach_ifnet_t(struct ifnet *); 1039 1040 VNET_DECLARE(pfsync_state_import_t *, pfsync_state_import_ptr); 1041 #define V_pfsync_state_import_ptr VNET(pfsync_state_import_ptr) 1042 VNET_DECLARE(pfsync_insert_state_t *, pfsync_insert_state_ptr); 1043 #define V_pfsync_insert_state_ptr VNET(pfsync_insert_state_ptr) 1044 VNET_DECLARE(pfsync_update_state_t *, pfsync_update_state_ptr); 1045 #define V_pfsync_update_state_ptr VNET(pfsync_update_state_ptr) 1046 VNET_DECLARE(pfsync_delete_state_t *, pfsync_delete_state_ptr); 1047 #define V_pfsync_delete_state_ptr VNET(pfsync_delete_state_ptr) 1048 VNET_DECLARE(pfsync_clear_states_t *, pfsync_clear_states_ptr); 1049 #define V_pfsync_clear_states_ptr VNET(pfsync_clear_states_ptr) 1050 VNET_DECLARE(pfsync_defer_t *, pfsync_defer_ptr); 1051 #define V_pfsync_defer_ptr VNET(pfsync_defer_ptr) 1052 extern pfsync_detach_ifnet_t *pfsync_detach_ifnet_ptr; 1053 1054 void pfsync_state_export(struct pfsync_state *, 1055 struct pf_kstate *); 1056 void pf_state_export(struct pf_state_export *, 1057 struct pf_kstate *); 1058 1059 /* pflog */ 1060 struct pf_kruleset; 1061 struct pf_pdesc; 1062 typedef int pflog_packet_t(struct pfi_kkif *, struct mbuf *, sa_family_t, 1063 u_int8_t, u_int8_t, struct pf_krule *, struct pf_krule *, 1064 struct pf_kruleset *, struct pf_pdesc *, int); 1065 extern pflog_packet_t *pflog_packet_ptr; 1066 1067 #endif /* _KERNEL */ 1068 1069 #define PFSYNC_FLAG_SRCNODE 0x04 1070 #define PFSYNC_FLAG_NATSRCNODE 0x08 1071 1072 /* for copies to/from network byte order */ 1073 /* ioctl interface also uses network byte order */ 1074 #define pf_state_peer_hton(s,d) do { \ 1075 (d)->seqlo = htonl((s)->seqlo); \ 1076 (d)->seqhi = htonl((s)->seqhi); \ 1077 (d)->seqdiff = htonl((s)->seqdiff); \ 1078 (d)->max_win = htons((s)->max_win); \ 1079 (d)->mss = htons((s)->mss); \ 1080 (d)->state = (s)->state; \ 1081 (d)->wscale = (s)->wscale; \ 1082 if ((s)->scrub) { \ 1083 (d)->scrub.pfss_flags = \ 1084 htons((s)->scrub->pfss_flags & PFSS_TIMESTAMP); \ 1085 (d)->scrub.pfss_ttl = (s)->scrub->pfss_ttl; \ 1086 (d)->scrub.pfss_ts_mod = htonl((s)->scrub->pfss_ts_mod);\ 1087 (d)->scrub.scrub_flag = PFSYNC_SCRUB_FLAG_VALID; \ 1088 } \ 1089 } while (0) 1090 1091 #define pf_state_peer_ntoh(s,d) do { \ 1092 (d)->seqlo = ntohl((s)->seqlo); \ 1093 (d)->seqhi = ntohl((s)->seqhi); \ 1094 (d)->seqdiff = ntohl((s)->seqdiff); \ 1095 (d)->max_win = ntohs((s)->max_win); \ 1096 (d)->mss = ntohs((s)->mss); \ 1097 (d)->state = (s)->state; \ 1098 (d)->wscale = (s)->wscale; \ 1099 if ((s)->scrub.scrub_flag == PFSYNC_SCRUB_FLAG_VALID && \ 1100 (d)->scrub != NULL) { \ 1101 (d)->scrub->pfss_flags = \ 1102 ntohs((s)->scrub.pfss_flags) & PFSS_TIMESTAMP; \ 1103 (d)->scrub->pfss_ttl = (s)->scrub.pfss_ttl; \ 1104 (d)->scrub->pfss_ts_mod = ntohl((s)->scrub.pfss_ts_mod);\ 1105 } \ 1106 } while (0) 1107 1108 #define pf_state_counter_hton(s,d) do { \ 1109 d[0] = htonl((s>>32)&0xffffffff); \ 1110 d[1] = htonl(s&0xffffffff); \ 1111 } while (0) 1112 1113 #define pf_state_counter_from_pfsync(s) \ 1114 (((u_int64_t)(s[0])<<32) | (u_int64_t)(s[1])) 1115 1116 #define pf_state_counter_ntoh(s,d) do { \ 1117 d = ntohl(s[0]); \ 1118 d = d<<32; \ 1119 d += ntohl(s[1]); \ 1120 } while (0) 1121 1122 TAILQ_HEAD(pf_krulequeue, pf_krule); 1123 1124 struct pf_kanchor; 1125 1126 struct pf_kruleset { 1127 struct { 1128 struct pf_krulequeue queues[2]; 1129 struct { 1130 struct pf_krulequeue *ptr; 1131 struct pf_krule **ptr_array; 1132 u_int32_t rcount; 1133 u_int32_t ticket; 1134 int open; 1135 } active, inactive; 1136 } rules[PF_RULESET_MAX]; 1137 struct pf_kanchor *anchor; 1138 u_int32_t tticket; 1139 int tables; 1140 int topen; 1141 }; 1142 1143 RB_HEAD(pf_kanchor_global, pf_kanchor); 1144 RB_HEAD(pf_kanchor_node, pf_kanchor); 1145 struct pf_kanchor { 1146 RB_ENTRY(pf_kanchor) entry_global; 1147 RB_ENTRY(pf_kanchor) entry_node; 1148 struct pf_kanchor *parent; 1149 struct pf_kanchor_node children; 1150 char name[PF_ANCHOR_NAME_SIZE]; 1151 char path[MAXPATHLEN]; 1152 struct pf_kruleset ruleset; 1153 int refcnt; /* anchor rules */ 1154 }; 1155 RB_PROTOTYPE(pf_kanchor_global, pf_kanchor, entry_global, pf_anchor_compare); 1156 RB_PROTOTYPE(pf_kanchor_node, pf_kanchor, entry_node, pf_kanchor_compare); 1157 1158 #define PF_RESERVED_ANCHOR "_pf" 1159 1160 #define PFR_TFLAG_PERSIST 0x00000001 1161 #define PFR_TFLAG_CONST 0x00000002 1162 #define PFR_TFLAG_ACTIVE 0x00000004 1163 #define PFR_TFLAG_INACTIVE 0x00000008 1164 #define PFR_TFLAG_REFERENCED 0x00000010 1165 #define PFR_TFLAG_REFDANCHOR 0x00000020 1166 #define PFR_TFLAG_COUNTERS 0x00000040 1167 /* Adjust masks below when adding flags. */ 1168 #define PFR_TFLAG_USRMASK (PFR_TFLAG_PERSIST | \ 1169 PFR_TFLAG_CONST | \ 1170 PFR_TFLAG_COUNTERS) 1171 #define PFR_TFLAG_SETMASK (PFR_TFLAG_ACTIVE | \ 1172 PFR_TFLAG_INACTIVE | \ 1173 PFR_TFLAG_REFERENCED | \ 1174 PFR_TFLAG_REFDANCHOR) 1175 #define PFR_TFLAG_ALLMASK (PFR_TFLAG_PERSIST | \ 1176 PFR_TFLAG_CONST | \ 1177 PFR_TFLAG_ACTIVE | \ 1178 PFR_TFLAG_INACTIVE | \ 1179 PFR_TFLAG_REFERENCED | \ 1180 PFR_TFLAG_REFDANCHOR | \ 1181 PFR_TFLAG_COUNTERS) 1182 1183 struct pf_kanchor_stackframe; 1184 struct pf_keth_anchor_stackframe; 1185 1186 struct pfr_table { 1187 char pfrt_anchor[MAXPATHLEN]; 1188 char pfrt_name[PF_TABLE_NAME_SIZE]; 1189 u_int32_t pfrt_flags; 1190 u_int8_t pfrt_fback; 1191 }; 1192 1193 enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED, 1194 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE, 1195 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_NOCOUNT, PFR_FB_MAX }; 1196 1197 struct pfr_addr { 1198 union { 1199 struct in_addr _pfra_ip4addr; 1200 struct in6_addr _pfra_ip6addr; 1201 } pfra_u; 1202 u_int8_t pfra_af; 1203 u_int8_t pfra_net; 1204 u_int8_t pfra_not; 1205 u_int8_t pfra_fback; 1206 }; 1207 #define pfra_ip4addr pfra_u._pfra_ip4addr 1208 #define pfra_ip6addr pfra_u._pfra_ip6addr 1209 1210 enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX }; 1211 enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX }; 1212 enum { PFR_TYPE_PACKETS, PFR_TYPE_BYTES, PFR_TYPE_MAX }; 1213 #define PFR_NUM_COUNTERS (PFR_DIR_MAX * PFR_OP_ADDR_MAX * PFR_TYPE_MAX) 1214 #define PFR_OP_XPASS PFR_OP_ADDR_MAX 1215 1216 struct pfr_astats { 1217 struct pfr_addr pfras_a; 1218 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1219 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1220 long pfras_tzero; 1221 }; 1222 1223 enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX }; 1224 1225 struct pfr_tstats { 1226 struct pfr_table pfrts_t; 1227 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1228 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1229 u_int64_t pfrts_match; 1230 u_int64_t pfrts_nomatch; 1231 long pfrts_tzero; 1232 int pfrts_cnt; 1233 int pfrts_refcnt[PFR_REFCNT_MAX]; 1234 }; 1235 1236 #ifdef _KERNEL 1237 1238 struct pfr_kstate_counter { 1239 counter_u64_t pkc_pcpu; 1240 u_int64_t pkc_zero; 1241 }; 1242 1243 static inline int 1244 pfr_kstate_counter_init(struct pfr_kstate_counter *pfrc, int flags) 1245 { 1246 1247 pfrc->pkc_zero = 0; 1248 pfrc->pkc_pcpu = counter_u64_alloc(flags); 1249 if (pfrc->pkc_pcpu == NULL) 1250 return (ENOMEM); 1251 return (0); 1252 } 1253 1254 static inline void 1255 pfr_kstate_counter_deinit(struct pfr_kstate_counter *pfrc) 1256 { 1257 1258 counter_u64_free(pfrc->pkc_pcpu); 1259 } 1260 1261 static inline u_int64_t 1262 pfr_kstate_counter_fetch(struct pfr_kstate_counter *pfrc) 1263 { 1264 u_int64_t c; 1265 1266 c = counter_u64_fetch(pfrc->pkc_pcpu); 1267 c -= pfrc->pkc_zero; 1268 return (c); 1269 } 1270 1271 static inline void 1272 pfr_kstate_counter_zero(struct pfr_kstate_counter *pfrc) 1273 { 1274 u_int64_t c; 1275 1276 c = counter_u64_fetch(pfrc->pkc_pcpu); 1277 pfrc->pkc_zero = c; 1278 } 1279 1280 static inline void 1281 pfr_kstate_counter_add(struct pfr_kstate_counter *pfrc, int64_t n) 1282 { 1283 1284 counter_u64_add(pfrc->pkc_pcpu, n); 1285 } 1286 1287 struct pfr_ktstats { 1288 struct pfr_table pfrts_t; 1289 struct pfr_kstate_counter pfrkts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1290 struct pfr_kstate_counter pfrkts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1291 struct pfr_kstate_counter pfrkts_match; 1292 struct pfr_kstate_counter pfrkts_nomatch; 1293 long pfrkts_tzero; 1294 int pfrkts_cnt; 1295 int pfrkts_refcnt[PFR_REFCNT_MAX]; 1296 }; 1297 1298 #endif /* _KERNEL */ 1299 1300 #define pfrts_name pfrts_t.pfrt_name 1301 #define pfrts_flags pfrts_t.pfrt_flags 1302 1303 #ifndef _SOCKADDR_UNION_DEFINED 1304 #define _SOCKADDR_UNION_DEFINED 1305 union sockaddr_union { 1306 struct sockaddr sa; 1307 struct sockaddr_in sin; 1308 struct sockaddr_in6 sin6; 1309 }; 1310 #endif /* _SOCKADDR_UNION_DEFINED */ 1311 1312 struct pfr_kcounters { 1313 counter_u64_t pfrkc_counters; 1314 long pfrkc_tzero; 1315 }; 1316 #define pfr_kentry_counter(kc, dir, op, t) \ 1317 ((kc)->pfrkc_counters + \ 1318 (dir) * PFR_OP_ADDR_MAX * PFR_TYPE_MAX + (op) * PFR_TYPE_MAX + (t)) 1319 1320 #ifdef _KERNEL 1321 SLIST_HEAD(pfr_kentryworkq, pfr_kentry); 1322 struct pfr_kentry { 1323 struct radix_node pfrke_node[2]; 1324 union sockaddr_union pfrke_sa; 1325 SLIST_ENTRY(pfr_kentry) pfrke_workq; 1326 struct pfr_kcounters pfrke_counters; 1327 u_int8_t pfrke_af; 1328 u_int8_t pfrke_net; 1329 u_int8_t pfrke_not; 1330 u_int8_t pfrke_mark; 1331 }; 1332 1333 SLIST_HEAD(pfr_ktableworkq, pfr_ktable); 1334 RB_HEAD(pfr_ktablehead, pfr_ktable); 1335 struct pfr_ktable { 1336 struct pfr_ktstats pfrkt_kts; 1337 RB_ENTRY(pfr_ktable) pfrkt_tree; 1338 SLIST_ENTRY(pfr_ktable) pfrkt_workq; 1339 struct radix_node_head *pfrkt_ip4; 1340 struct radix_node_head *pfrkt_ip6; 1341 struct pfr_ktable *pfrkt_shadow; 1342 struct pfr_ktable *pfrkt_root; 1343 struct pf_kruleset *pfrkt_rs; 1344 long pfrkt_larg; 1345 int pfrkt_nflags; 1346 }; 1347 #define pfrkt_t pfrkt_kts.pfrts_t 1348 #define pfrkt_name pfrkt_t.pfrt_name 1349 #define pfrkt_anchor pfrkt_t.pfrt_anchor 1350 #define pfrkt_ruleset pfrkt_t.pfrt_ruleset 1351 #define pfrkt_flags pfrkt_t.pfrt_flags 1352 #define pfrkt_cnt pfrkt_kts.pfrkts_cnt 1353 #define pfrkt_refcnt pfrkt_kts.pfrkts_refcnt 1354 #define pfrkt_packets pfrkt_kts.pfrkts_packets 1355 #define pfrkt_bytes pfrkt_kts.pfrkts_bytes 1356 #define pfrkt_match pfrkt_kts.pfrkts_match 1357 #define pfrkt_nomatch pfrkt_kts.pfrkts_nomatch 1358 #define pfrkt_tzero pfrkt_kts.pfrkts_tzero 1359 #endif 1360 1361 #ifdef _KERNEL 1362 struct pfi_kkif { 1363 char pfik_name[IFNAMSIZ]; 1364 union { 1365 RB_ENTRY(pfi_kkif) _pfik_tree; 1366 LIST_ENTRY(pfi_kkif) _pfik_list; 1367 } _pfik_glue; 1368 #define pfik_tree _pfik_glue._pfik_tree 1369 #define pfik_list _pfik_glue._pfik_list 1370 struct pf_counter_u64 pfik_packets[2][2][2]; 1371 struct pf_counter_u64 pfik_bytes[2][2][2]; 1372 u_int32_t pfik_tzero; 1373 u_int pfik_flags; 1374 struct ifnet *pfik_ifp; 1375 struct ifg_group *pfik_group; 1376 u_int pfik_rulerefs; 1377 TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs; 1378 #ifdef PF_WANT_32_TO_64_COUNTER 1379 LIST_ENTRY(pfi_kkif) pfik_allkiflist; 1380 #endif 1381 }; 1382 #endif 1383 1384 #define PFI_IFLAG_REFS 0x0001 /* has state references */ 1385 #define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */ 1386 1387 #ifdef _KERNEL 1388 struct pf_pdesc { 1389 struct { 1390 int done; 1391 uid_t uid; 1392 gid_t gid; 1393 } lookup; 1394 u_int64_t tot_len; /* Make Mickey money */ 1395 union pf_headers { 1396 struct tcphdr tcp; 1397 struct udphdr udp; 1398 struct icmp icmp; 1399 #ifdef INET6 1400 struct icmp6_hdr icmp6; 1401 #endif /* INET6 */ 1402 char any[0]; 1403 } hdr; 1404 1405 struct pf_krule *nat_rule; /* nat/rdr rule applied to packet */ 1406 struct pf_addr *src; /* src address */ 1407 struct pf_addr *dst; /* dst address */ 1408 u_int16_t *sport; 1409 u_int16_t *dport; 1410 struct pf_mtag *pf_mtag; 1411 struct pf_rule_actions act; 1412 1413 u_int32_t p_len; /* total length of payload */ 1414 1415 u_int16_t *ip_sum; 1416 u_int16_t *proto_sum; 1417 u_int16_t flags; /* Let SCRUB trigger behavior in 1418 * state code. Easier than tags */ 1419 #define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */ 1420 #define PFDESC_IP_REAS 0x0002 /* IP frags would've been reassembled */ 1421 sa_family_t af; 1422 u_int8_t proto; 1423 u_int8_t tos; 1424 u_int8_t dir; /* direction */ 1425 u_int8_t sidx; /* key index for source */ 1426 u_int8_t didx; /* key index for destination */ 1427 }; 1428 #endif 1429 1430 /* flags for RDR options */ 1431 #define PF_DPORT_RANGE 0x01 /* Dest port uses range */ 1432 #define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */ 1433 1434 /* UDP state enumeration */ 1435 #define PFUDPS_NO_TRAFFIC 0 1436 #define PFUDPS_SINGLE 1 1437 #define PFUDPS_MULTIPLE 2 1438 1439 #define PFUDPS_NSTATES 3 /* number of state levels */ 1440 1441 #define PFUDPS_NAMES { \ 1442 "NO_TRAFFIC", \ 1443 "SINGLE", \ 1444 "MULTIPLE", \ 1445 NULL \ 1446 } 1447 1448 /* Other protocol state enumeration */ 1449 #define PFOTHERS_NO_TRAFFIC 0 1450 #define PFOTHERS_SINGLE 1 1451 #define PFOTHERS_MULTIPLE 2 1452 1453 #define PFOTHERS_NSTATES 3 /* number of state levels */ 1454 1455 #define PFOTHERS_NAMES { \ 1456 "NO_TRAFFIC", \ 1457 "SINGLE", \ 1458 "MULTIPLE", \ 1459 NULL \ 1460 } 1461 1462 #define ACTION_SET(a, x) \ 1463 do { \ 1464 if ((a) != NULL) \ 1465 *(a) = (x); \ 1466 } while (0) 1467 1468 #define REASON_SET(a, x) \ 1469 do { \ 1470 if ((a) != NULL) \ 1471 *(a) = (x); \ 1472 if (x < PFRES_MAX) \ 1473 counter_u64_add(V_pf_status.counters[x], 1); \ 1474 } while (0) 1475 1476 enum pf_syncookies_mode { 1477 PF_SYNCOOKIES_NEVER = 0, 1478 PF_SYNCOOKIES_ALWAYS = 1, 1479 PF_SYNCOOKIES_ADAPTIVE = 2, 1480 PF_SYNCOOKIES_MODE_MAX = PF_SYNCOOKIES_ADAPTIVE 1481 }; 1482 1483 #define PF_SYNCOOKIES_HIWATPCT 25 1484 #define PF_SYNCOOKIES_LOWATPCT (PF_SYNCOOKIES_HIWATPCT / 2) 1485 1486 #ifdef _KERNEL 1487 struct pf_kstatus { 1488 counter_u64_t counters[PFRES_MAX]; /* reason for passing/dropping */ 1489 counter_u64_t lcounters[KLCNT_MAX]; /* limit counters */ 1490 struct pf_counter_u64 fcounters[FCNT_MAX]; /* state operation counters */ 1491 counter_u64_t scounters[SCNT_MAX]; /* src_node operation counters */ 1492 uint32_t states; 1493 uint32_t src_nodes; 1494 uint32_t running; 1495 uint32_t since; 1496 uint32_t debug; 1497 uint32_t hostid; 1498 char ifname[IFNAMSIZ]; 1499 uint8_t pf_chksum[PF_MD5_DIGEST_LENGTH]; 1500 bool keep_counters; 1501 enum pf_syncookies_mode syncookies_mode; 1502 bool syncookies_active; 1503 uint64_t syncookies_inflight[2]; 1504 uint32_t states_halfopen; 1505 }; 1506 #endif 1507 1508 struct pf_divert { 1509 union { 1510 struct in_addr ipv4; 1511 struct in6_addr ipv6; 1512 } addr; 1513 u_int16_t port; 1514 }; 1515 1516 #define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */ 1517 #define PFR_KENTRY_HIWAT 200000 /* Number of table entries */ 1518 1519 /* 1520 * Limit the length of the fragment queue traversal. Remember 1521 * search entry points based on the fragment offset. 1522 */ 1523 #define PF_FRAG_ENTRY_POINTS 16 1524 1525 /* 1526 * The number of entries in the fragment queue must be limited 1527 * to avoid DoS by linear seaching. Instead of a global limit, 1528 * use a limit per entry point. For large packets these sum up. 1529 */ 1530 #define PF_FRAG_ENTRY_LIMIT 64 1531 1532 /* 1533 * ioctl parameter structures 1534 */ 1535 1536 struct pfioc_pooladdr { 1537 u_int32_t action; 1538 u_int32_t ticket; 1539 u_int32_t nr; 1540 u_int32_t r_num; 1541 u_int8_t r_action; 1542 u_int8_t r_last; 1543 u_int8_t af; 1544 char anchor[MAXPATHLEN]; 1545 struct pf_pooladdr addr; 1546 }; 1547 1548 struct pfioc_rule { 1549 u_int32_t action; 1550 u_int32_t ticket; 1551 u_int32_t pool_ticket; 1552 u_int32_t nr; 1553 char anchor[MAXPATHLEN]; 1554 char anchor_call[MAXPATHLEN]; 1555 struct pf_rule rule; 1556 }; 1557 1558 struct pfioc_natlook { 1559 struct pf_addr saddr; 1560 struct pf_addr daddr; 1561 struct pf_addr rsaddr; 1562 struct pf_addr rdaddr; 1563 u_int16_t sport; 1564 u_int16_t dport; 1565 u_int16_t rsport; 1566 u_int16_t rdport; 1567 sa_family_t af; 1568 u_int8_t proto; 1569 u_int8_t direction; 1570 }; 1571 1572 struct pfioc_state { 1573 struct pfsync_state state; 1574 }; 1575 1576 struct pfioc_src_node_kill { 1577 sa_family_t psnk_af; 1578 struct pf_rule_addr psnk_src; 1579 struct pf_rule_addr psnk_dst; 1580 u_int psnk_killed; 1581 }; 1582 1583 #ifdef _KERNEL 1584 struct pf_kstate_kill { 1585 struct pf_state_cmp psk_pfcmp; 1586 sa_family_t psk_af; 1587 int psk_proto; 1588 struct pf_rule_addr psk_src; 1589 struct pf_rule_addr psk_dst; 1590 struct pf_rule_addr psk_rt_addr; 1591 char psk_ifname[IFNAMSIZ]; 1592 char psk_label[PF_RULE_LABEL_SIZE]; 1593 u_int psk_killed; 1594 bool psk_kill_match; 1595 }; 1596 #endif 1597 1598 struct pfioc_state_kill { 1599 struct pf_state_cmp psk_pfcmp; 1600 sa_family_t psk_af; 1601 int psk_proto; 1602 struct pf_rule_addr psk_src; 1603 struct pf_rule_addr psk_dst; 1604 char psk_ifname[IFNAMSIZ]; 1605 char psk_label[PF_RULE_LABEL_SIZE]; 1606 u_int psk_killed; 1607 }; 1608 1609 struct pfioc_states { 1610 int ps_len; 1611 union { 1612 caddr_t psu_buf; 1613 struct pfsync_state *psu_states; 1614 } ps_u; 1615 #define ps_buf ps_u.psu_buf 1616 #define ps_states ps_u.psu_states 1617 }; 1618 1619 struct pfioc_states_v2 { 1620 int ps_len; 1621 uint64_t ps_req_version; 1622 union { 1623 caddr_t psu_buf; 1624 struct pf_state_export *psu_states; 1625 } ps_u; 1626 #define ps_buf ps_u.psu_buf 1627 #define ps_states ps_u.psu_states 1628 }; 1629 1630 struct pfioc_src_nodes { 1631 int psn_len; 1632 union { 1633 caddr_t psu_buf; 1634 struct pf_src_node *psu_src_nodes; 1635 } psn_u; 1636 #define psn_buf psn_u.psu_buf 1637 #define psn_src_nodes psn_u.psu_src_nodes 1638 }; 1639 1640 struct pfioc_if { 1641 char ifname[IFNAMSIZ]; 1642 }; 1643 1644 struct pfioc_tm { 1645 int timeout; 1646 int seconds; 1647 }; 1648 1649 struct pfioc_limit { 1650 int index; 1651 unsigned limit; 1652 }; 1653 1654 struct pfioc_altq_v0 { 1655 u_int32_t action; 1656 u_int32_t ticket; 1657 u_int32_t nr; 1658 struct pf_altq_v0 altq; 1659 }; 1660 1661 struct pfioc_altq_v1 { 1662 u_int32_t action; 1663 u_int32_t ticket; 1664 u_int32_t nr; 1665 /* 1666 * Placed here so code that only uses the above parameters can be 1667 * written entirely in terms of the v0 or v1 type. 1668 */ 1669 u_int32_t version; 1670 struct pf_altq_v1 altq; 1671 }; 1672 1673 /* 1674 * Latest version of struct pfioc_altq_vX. This must move in lock-step with 1675 * the latest version of struct pf_altq_vX as it has that struct as a 1676 * member. 1677 */ 1678 #define PFIOC_ALTQ_VERSION PF_ALTQ_VERSION 1679 1680 struct pfioc_qstats_v0 { 1681 u_int32_t ticket; 1682 u_int32_t nr; 1683 void *buf; 1684 int nbytes; 1685 u_int8_t scheduler; 1686 }; 1687 1688 struct pfioc_qstats_v1 { 1689 u_int32_t ticket; 1690 u_int32_t nr; 1691 void *buf; 1692 int nbytes; 1693 u_int8_t scheduler; 1694 /* 1695 * Placed here so code that only uses the above parameters can be 1696 * written entirely in terms of the v0 or v1 type. 1697 */ 1698 u_int32_t version; /* Requested version of stats struct */ 1699 }; 1700 1701 /* Latest version of struct pfioc_qstats_vX */ 1702 #define PFIOC_QSTATS_VERSION 1 1703 1704 struct pfioc_ruleset { 1705 u_int32_t nr; 1706 char path[MAXPATHLEN]; 1707 char name[PF_ANCHOR_NAME_SIZE]; 1708 }; 1709 1710 #define PF_RULESET_ALTQ (PF_RULESET_MAX) 1711 #define PF_RULESET_TABLE (PF_RULESET_MAX+1) 1712 #define PF_RULESET_ETH (PF_RULESET_MAX+2) 1713 struct pfioc_trans { 1714 int size; /* number of elements */ 1715 int esize; /* size of each element in bytes */ 1716 struct pfioc_trans_e { 1717 int rs_num; 1718 char anchor[MAXPATHLEN]; 1719 u_int32_t ticket; 1720 } *array; 1721 }; 1722 1723 #define PFR_FLAG_ATOMIC 0x00000001 /* unused */ 1724 #define PFR_FLAG_DUMMY 0x00000002 1725 #define PFR_FLAG_FEEDBACK 0x00000004 1726 #define PFR_FLAG_CLSTATS 0x00000008 1727 #define PFR_FLAG_ADDRSTOO 0x00000010 1728 #define PFR_FLAG_REPLACE 0x00000020 1729 #define PFR_FLAG_ALLRSETS 0x00000040 1730 #define PFR_FLAG_ALLMASK 0x0000007F 1731 #ifdef _KERNEL 1732 #define PFR_FLAG_USERIOCTL 0x10000000 1733 #endif 1734 1735 struct pfioc_table { 1736 struct pfr_table pfrio_table; 1737 void *pfrio_buffer; 1738 int pfrio_esize; 1739 int pfrio_size; 1740 int pfrio_size2; 1741 int pfrio_nadd; 1742 int pfrio_ndel; 1743 int pfrio_nchange; 1744 int pfrio_flags; 1745 u_int32_t pfrio_ticket; 1746 }; 1747 #define pfrio_exists pfrio_nadd 1748 #define pfrio_nzero pfrio_nadd 1749 #define pfrio_nmatch pfrio_nadd 1750 #define pfrio_naddr pfrio_size2 1751 #define pfrio_setflag pfrio_size2 1752 #define pfrio_clrflag pfrio_nadd 1753 1754 struct pfioc_iface { 1755 char pfiio_name[IFNAMSIZ]; 1756 void *pfiio_buffer; 1757 int pfiio_esize; 1758 int pfiio_size; 1759 int pfiio_nzero; 1760 int pfiio_flags; 1761 }; 1762 1763 /* 1764 * ioctl operations 1765 */ 1766 1767 #define DIOCSTART _IO ('D', 1) 1768 #define DIOCSTOP _IO ('D', 2) 1769 #define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule) 1770 #define DIOCADDRULENV _IOWR('D', 4, struct pfioc_nv) 1771 #define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule) 1772 #define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule) 1773 #define DIOCGETRULENV _IOWR('D', 7, struct pfioc_nv) 1774 /* XXX cut 8 - 17 */ 1775 #define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill) 1776 #define DIOCCLRSTATESNV _IOWR('D', 18, struct pfioc_nv) 1777 #define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state) 1778 #define DIOCGETSTATENV _IOWR('D', 19, struct pfioc_nv) 1779 #define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if) 1780 #define DIOCGETSTATUS _IOWR('D', 21, struct pf_status) 1781 #define DIOCGETSTATUSNV _IOWR('D', 21, struct pfioc_nv) 1782 #define DIOCCLRSTATUS _IO ('D', 22) 1783 #define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook) 1784 #define DIOCSETDEBUG _IOWR('D', 24, u_int32_t) 1785 #define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states) 1786 #define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule) 1787 /* XXX cut 26 - 28 */ 1788 #define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm) 1789 #define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm) 1790 #define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state) 1791 #define DIOCCLRRULECTRS _IO ('D', 38) 1792 #define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit) 1793 #define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit) 1794 #define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill) 1795 #define DIOCKILLSTATESNV _IOWR('D', 41, struct pfioc_nv) 1796 #define DIOCSTARTALTQ _IO ('D', 42) 1797 #define DIOCSTOPALTQ _IO ('D', 43) 1798 #define DIOCADDALTQV0 _IOWR('D', 45, struct pfioc_altq_v0) 1799 #define DIOCADDALTQV1 _IOWR('D', 45, struct pfioc_altq_v1) 1800 #define DIOCGETALTQSV0 _IOWR('D', 47, struct pfioc_altq_v0) 1801 #define DIOCGETALTQSV1 _IOWR('D', 47, struct pfioc_altq_v1) 1802 #define DIOCGETALTQV0 _IOWR('D', 48, struct pfioc_altq_v0) 1803 #define DIOCGETALTQV1 _IOWR('D', 48, struct pfioc_altq_v1) 1804 #define DIOCCHANGEALTQV0 _IOWR('D', 49, struct pfioc_altq_v0) 1805 #define DIOCCHANGEALTQV1 _IOWR('D', 49, struct pfioc_altq_v1) 1806 #define DIOCGETQSTATSV0 _IOWR('D', 50, struct pfioc_qstats_v0) 1807 #define DIOCGETQSTATSV1 _IOWR('D', 50, struct pfioc_qstats_v1) 1808 #define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr) 1809 #define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr) 1810 #define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr) 1811 #define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr) 1812 #define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr) 1813 /* XXX cut 55 - 57 */ 1814 #define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset) 1815 #define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset) 1816 #define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table) 1817 #define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table) 1818 #define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table) 1819 #define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table) 1820 #define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table) 1821 #define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table) 1822 #define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table) 1823 #define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table) 1824 #define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table) 1825 #define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table) 1826 #define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table) 1827 #define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table) 1828 #define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table) 1829 #define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table) 1830 #define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table) 1831 #define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table) 1832 #define DIOCOSFPFLUSH _IO('D', 78) 1833 #define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl) 1834 #define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl) 1835 #define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans) 1836 #define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans) 1837 #define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans) 1838 #define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes) 1839 #define DIOCCLRSRCNODES _IO('D', 85) 1840 #define DIOCSETHOSTID _IOWR('D', 86, u_int32_t) 1841 #define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface) 1842 #define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface) 1843 #define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface) 1844 #define DIOCKILLSRCNODES _IOWR('D', 91, struct pfioc_src_node_kill) 1845 #define DIOCGIFSPEEDV0 _IOWR('D', 92, struct pf_ifspeed_v0) 1846 #define DIOCGIFSPEEDV1 _IOWR('D', 92, struct pf_ifspeed_v1) 1847 #define DIOCGETSTATESV2 _IOWR('D', 93, struct pfioc_states_v2) 1848 #define DIOCGETSYNCOOKIES _IOWR('D', 94, struct pfioc_nv) 1849 #define DIOCSETSYNCOOKIES _IOWR('D', 95, struct pfioc_nv) 1850 #define DIOCKEEPCOUNTERS _IOWR('D', 96, struct pfioc_nv) 1851 #define DIOCKEEPCOUNTERS_FREEBSD13 _IOWR('D', 92, struct pfioc_nv) 1852 #define DIOCADDETHRULE _IOWR('D', 97, struct pfioc_nv) 1853 #define DIOCGETETHRULE _IOWR('D', 98, struct pfioc_nv) 1854 #define DIOCGETETHRULES _IOWR('D', 99, struct pfioc_nv) 1855 1856 struct pf_ifspeed_v0 { 1857 char ifname[IFNAMSIZ]; 1858 u_int32_t baudrate; 1859 }; 1860 1861 struct pf_ifspeed_v1 { 1862 char ifname[IFNAMSIZ]; 1863 u_int32_t baudrate32; 1864 /* layout identical to struct pf_ifspeed_v0 up to this point */ 1865 u_int64_t baudrate; 1866 }; 1867 1868 /* Latest version of struct pf_ifspeed_vX */ 1869 #define PF_IFSPEED_VERSION 1 1870 1871 /* 1872 * Compatibility and convenience macros 1873 */ 1874 #ifndef _KERNEL 1875 #ifdef PFIOC_USE_LATEST 1876 /* 1877 * Maintaining in-tree consumers of the ioctl interface is easier when that 1878 * code can be written in terms old names that refer to the latest interface 1879 * version as that reduces the required changes in the consumers to those 1880 * that are functionally necessary to accommodate a new interface version. 1881 */ 1882 #define pfioc_altq __CONCAT(pfioc_altq_v, PFIOC_ALTQ_VERSION) 1883 #define pfioc_qstats __CONCAT(pfioc_qstats_v, PFIOC_QSTATS_VERSION) 1884 #define pf_ifspeed __CONCAT(pf_ifspeed_v, PF_IFSPEED_VERSION) 1885 1886 #define DIOCADDALTQ __CONCAT(DIOCADDALTQV, PFIOC_ALTQ_VERSION) 1887 #define DIOCGETALTQS __CONCAT(DIOCGETALTQSV, PFIOC_ALTQ_VERSION) 1888 #define DIOCGETALTQ __CONCAT(DIOCGETALTQV, PFIOC_ALTQ_VERSION) 1889 #define DIOCCHANGEALTQ __CONCAT(DIOCCHANGEALTQV, PFIOC_ALTQ_VERSION) 1890 #define DIOCGETQSTATS __CONCAT(DIOCGETQSTATSV, PFIOC_QSTATS_VERSION) 1891 #define DIOCGIFSPEED __CONCAT(DIOCGIFSPEEDV, PF_IFSPEED_VERSION) 1892 #else 1893 /* 1894 * When building out-of-tree code that is written for the old interface, 1895 * such as may exist in ports for example, resolve the old struct tags and 1896 * ioctl command names to the v0 versions. 1897 */ 1898 #define pfioc_altq __CONCAT(pfioc_altq_v, 0) 1899 #define pfioc_qstats __CONCAT(pfioc_qstats_v, 0) 1900 #define pf_ifspeed __CONCAT(pf_ifspeed_v, 0) 1901 1902 #define DIOCADDALTQ __CONCAT(DIOCADDALTQV, 0) 1903 #define DIOCGETALTQS __CONCAT(DIOCGETALTQSV, 0) 1904 #define DIOCGETALTQ __CONCAT(DIOCGETALTQV, 0) 1905 #define DIOCCHANGEALTQ __CONCAT(DIOCCHANGEALTQV, 0) 1906 #define DIOCGETQSTATS __CONCAT(DIOCGETQSTATSV, 0) 1907 #define DIOCGIFSPEED __CONCAT(DIOCGIFSPEEDV, 0) 1908 #endif /* PFIOC_USE_LATEST */ 1909 #endif /* _KERNEL */ 1910 1911 #ifdef _KERNEL 1912 LIST_HEAD(pf_ksrc_node_list, pf_ksrc_node); 1913 struct pf_srchash { 1914 struct pf_ksrc_node_list nodes; 1915 struct mtx lock; 1916 }; 1917 1918 struct pf_keyhash { 1919 LIST_HEAD(, pf_state_key) keys; 1920 struct mtx lock; 1921 }; 1922 1923 struct pf_idhash { 1924 LIST_HEAD(, pf_kstate) states; 1925 struct mtx lock; 1926 }; 1927 1928 extern u_long pf_ioctl_maxcount; 1929 extern u_long pf_hashmask; 1930 extern u_long pf_srchashmask; 1931 #define PF_HASHSIZ (131072) 1932 #define PF_SRCHASHSIZ (PF_HASHSIZ/4) 1933 VNET_DECLARE(struct pf_keyhash *, pf_keyhash); 1934 VNET_DECLARE(struct pf_idhash *, pf_idhash); 1935 #define V_pf_keyhash VNET(pf_keyhash) 1936 #define V_pf_idhash VNET(pf_idhash) 1937 VNET_DECLARE(struct pf_srchash *, pf_srchash); 1938 #define V_pf_srchash VNET(pf_srchash) 1939 1940 #define PF_IDHASH(s) (be64toh((s)->id) % (pf_hashmask + 1)) 1941 1942 VNET_DECLARE(void *, pf_swi_cookie); 1943 #define V_pf_swi_cookie VNET(pf_swi_cookie) 1944 VNET_DECLARE(struct intr_event *, pf_swi_ie); 1945 #define V_pf_swi_ie VNET(pf_swi_ie) 1946 1947 VNET_DECLARE(uint64_t, pf_stateid[MAXCPU]); 1948 #define V_pf_stateid VNET(pf_stateid) 1949 1950 TAILQ_HEAD(pf_altqqueue, pf_altq); 1951 VNET_DECLARE(struct pf_altqqueue, pf_altqs[4]); 1952 #define V_pf_altqs VNET(pf_altqs) 1953 VNET_DECLARE(struct pf_kpalist, pf_pabuf); 1954 #define V_pf_pabuf VNET(pf_pabuf) 1955 1956 VNET_DECLARE(u_int32_t, ticket_altqs_active); 1957 #define V_ticket_altqs_active VNET(ticket_altqs_active) 1958 VNET_DECLARE(u_int32_t, ticket_altqs_inactive); 1959 #define V_ticket_altqs_inactive VNET(ticket_altqs_inactive) 1960 VNET_DECLARE(int, altqs_inactive_open); 1961 #define V_altqs_inactive_open VNET(altqs_inactive_open) 1962 VNET_DECLARE(u_int32_t, ticket_pabuf); 1963 #define V_ticket_pabuf VNET(ticket_pabuf) 1964 VNET_DECLARE(struct pf_altqqueue *, pf_altqs_active); 1965 #define V_pf_altqs_active VNET(pf_altqs_active) 1966 VNET_DECLARE(struct pf_altqqueue *, pf_altq_ifs_active); 1967 #define V_pf_altq_ifs_active VNET(pf_altq_ifs_active) 1968 VNET_DECLARE(struct pf_altqqueue *, pf_altqs_inactive); 1969 #define V_pf_altqs_inactive VNET(pf_altqs_inactive) 1970 VNET_DECLARE(struct pf_altqqueue *, pf_altq_ifs_inactive); 1971 #define V_pf_altq_ifs_inactive VNET(pf_altq_ifs_inactive) 1972 1973 VNET_DECLARE(struct pf_krulequeue, pf_unlinked_rules); 1974 #define V_pf_unlinked_rules VNET(pf_unlinked_rules) 1975 1976 #ifdef PF_WANT_32_TO_64_COUNTER 1977 LIST_HEAD(allkiflist_head, pfi_kkif); 1978 VNET_DECLARE(struct allkiflist_head, pf_allkiflist); 1979 #define V_pf_allkiflist VNET(pf_allkiflist) 1980 VNET_DECLARE(size_t, pf_allkifcount); 1981 #define V_pf_allkifcount VNET(pf_allkifcount) 1982 VNET_DECLARE(struct pfi_kkif *, pf_kifmarker); 1983 #define V_pf_kifmarker VNET(pf_kifmarker) 1984 1985 LIST_HEAD(allrulelist_head, pf_krule); 1986 VNET_DECLARE(struct allrulelist_head, pf_allrulelist); 1987 #define V_pf_allrulelist VNET(pf_allrulelist) 1988 VNET_DECLARE(size_t, pf_allrulecount); 1989 #define V_pf_allrulecount VNET(pf_allrulecount) 1990 VNET_DECLARE(struct pf_krule *, pf_rulemarker); 1991 #define V_pf_rulemarker VNET(pf_rulemarker) 1992 #endif 1993 1994 void pf_initialize(void); 1995 void pf_mtag_initialize(void); 1996 void pf_mtag_cleanup(void); 1997 void pf_cleanup(void); 1998 1999 struct pf_mtag *pf_get_mtag(struct mbuf *); 2000 2001 extern void pf_calc_skip_steps(struct pf_krulequeue *); 2002 #ifdef ALTQ 2003 extern void pf_altq_ifnet_event(struct ifnet *, int); 2004 #endif 2005 VNET_DECLARE(uma_zone_t, pf_state_z); 2006 #define V_pf_state_z VNET(pf_state_z) 2007 VNET_DECLARE(uma_zone_t, pf_state_key_z); 2008 #define V_pf_state_key_z VNET(pf_state_key_z) 2009 VNET_DECLARE(uma_zone_t, pf_state_scrub_z); 2010 #define V_pf_state_scrub_z VNET(pf_state_scrub_z) 2011 2012 extern void pf_purge_thread(void *); 2013 extern void pf_unload_vnet_purge(void); 2014 extern void pf_intr(void *); 2015 extern void pf_purge_expired_src_nodes(void); 2016 2017 extern int pf_unlink_state(struct pf_kstate *); 2018 extern int pf_state_insert(struct pfi_kkif *, 2019 struct pfi_kkif *, 2020 struct pf_state_key *, 2021 struct pf_state_key *, 2022 struct pf_kstate *); 2023 extern struct pf_kstate *pf_alloc_state(int); 2024 extern void pf_free_state(struct pf_kstate *); 2025 2026 static __inline void 2027 pf_ref_state(struct pf_kstate *s) 2028 { 2029 2030 refcount_acquire(&s->refs); 2031 } 2032 2033 static __inline int 2034 pf_release_state(struct pf_kstate *s) 2035 { 2036 2037 if (refcount_release(&s->refs)) { 2038 pf_free_state(s); 2039 return (1); 2040 } else 2041 return (0); 2042 } 2043 2044 static __inline int 2045 pf_release_staten(struct pf_kstate *s, u_int n) 2046 { 2047 2048 if (refcount_releasen(&s->refs, n)) { 2049 pf_free_state(s); 2050 return (1); 2051 } else 2052 return (0); 2053 } 2054 2055 extern struct pf_kstate *pf_find_state_byid(uint64_t, uint32_t); 2056 extern struct pf_kstate *pf_find_state_all(struct pf_state_key_cmp *, 2057 u_int, int *); 2058 extern bool pf_find_state_all_exists(struct pf_state_key_cmp *, 2059 u_int); 2060 extern struct pf_ksrc_node *pf_find_src_node(struct pf_addr *, 2061 struct pf_krule *, sa_family_t, int); 2062 extern void pf_unlink_src_node(struct pf_ksrc_node *); 2063 extern u_int pf_free_src_nodes(struct pf_ksrc_node_list *); 2064 extern void pf_print_state(struct pf_kstate *); 2065 extern void pf_print_flags(u_int8_t); 2066 extern u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t, 2067 u_int8_t); 2068 extern u_int16_t pf_proto_cksum_fixup(struct mbuf *, u_int16_t, 2069 u_int16_t, u_int16_t, u_int8_t); 2070 2071 VNET_DECLARE(struct ifnet *, sync_ifp); 2072 #define V_sync_ifp VNET(sync_ifp); 2073 VNET_DECLARE(struct pf_krule, pf_default_rule); 2074 #define V_pf_default_rule VNET(pf_default_rule) 2075 extern void pf_addrcpy(struct pf_addr *, struct pf_addr *, 2076 u_int8_t); 2077 void pf_free_rule(struct pf_krule *); 2078 2079 int pf_test_eth(int, int, struct ifnet *, struct mbuf **, struct inpcb *); 2080 #ifdef INET 2081 int pf_test(int, int, struct ifnet *, struct mbuf **, struct inpcb *); 2082 int pf_normalize_ip(struct mbuf **, int, struct pfi_kkif *, u_short *, 2083 struct pf_pdesc *); 2084 #endif /* INET */ 2085 2086 #ifdef INET6 2087 int pf_test6(int, int, struct ifnet *, struct mbuf **, struct inpcb *); 2088 int pf_normalize_ip6(struct mbuf **, int, struct pfi_kkif *, u_short *, 2089 struct pf_pdesc *); 2090 void pf_poolmask(struct pf_addr *, struct pf_addr*, 2091 struct pf_addr *, struct pf_addr *, u_int8_t); 2092 void pf_addr_inc(struct pf_addr *, sa_family_t); 2093 int pf_refragment6(struct ifnet *, struct mbuf **, struct m_tag *); 2094 #endif /* INET6 */ 2095 2096 u_int32_t pf_new_isn(struct pf_kstate *); 2097 void *pf_pull_hdr(struct mbuf *, int, void *, int, u_short *, u_short *, 2098 sa_family_t); 2099 void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t); 2100 void pf_change_proto_a(struct mbuf *, void *, u_int16_t *, u_int32_t, 2101 u_int8_t); 2102 void pf_change_tcp_a(struct mbuf *, void *, u_int16_t *, u_int32_t); 2103 void pf_patch_16_unaligned(struct mbuf *, u_int16_t *, void *, u_int16_t, 2104 bool, u_int8_t); 2105 void pf_patch_32_unaligned(struct mbuf *, u_int16_t *, void *, u_int32_t, 2106 bool, u_int8_t); 2107 void pf_send_deferred_syn(struct pf_kstate *); 2108 int pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *, 2109 struct pf_addr *, sa_family_t); 2110 int pf_match_addr_range(struct pf_addr *, struct pf_addr *, 2111 struct pf_addr *, sa_family_t); 2112 int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t); 2113 2114 void pf_normalize_init(void); 2115 void pf_normalize_cleanup(void); 2116 int pf_normalize_tcp(int, struct pfi_kkif *, struct mbuf *, int, int, void *, 2117 struct pf_pdesc *); 2118 void pf_normalize_tcp_cleanup(struct pf_kstate *); 2119 int pf_normalize_tcp_init(struct mbuf *, int, struct pf_pdesc *, 2120 struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *); 2121 int pf_normalize_tcp_stateful(struct mbuf *, int, struct pf_pdesc *, 2122 u_short *, struct tcphdr *, struct pf_kstate *, 2123 struct pf_state_peer *, struct pf_state_peer *, int *); 2124 u_int32_t 2125 pf_state_expires(const struct pf_kstate *); 2126 void pf_purge_expired_fragments(void); 2127 void pf_purge_fragments(uint32_t); 2128 int pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kkif *, 2129 int); 2130 int pf_socket_lookup(int, struct pf_pdesc *, struct mbuf *); 2131 struct pf_state_key *pf_alloc_state_key(int); 2132 void pfr_initialize(void); 2133 void pfr_cleanup(void); 2134 int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t); 2135 void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t, 2136 u_int64_t, int, int, int); 2137 int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, sa_family_t); 2138 void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *); 2139 struct pfr_ktable * 2140 pfr_attach_table(struct pf_kruleset *, char *); 2141 void pfr_detach_table(struct pfr_ktable *); 2142 int pfr_clr_tables(struct pfr_table *, int *, int); 2143 int pfr_add_tables(struct pfr_table *, int, int *, int); 2144 int pfr_del_tables(struct pfr_table *, int, int *, int); 2145 int pfr_table_count(struct pfr_table *, int); 2146 int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int); 2147 int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int); 2148 int pfr_clr_tstats(struct pfr_table *, int, int *, int); 2149 int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int); 2150 int pfr_clr_addrs(struct pfr_table *, int *, int); 2151 int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *, long); 2152 int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 2153 int); 2154 int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 2155 int); 2156 int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 2157 int *, int *, int *, int, u_int32_t); 2158 int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int); 2159 int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int); 2160 int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *, 2161 int); 2162 int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 2163 int); 2164 int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int); 2165 int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int); 2166 int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int); 2167 int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *, 2168 int *, u_int32_t, int); 2169 2170 MALLOC_DECLARE(PFI_MTYPE); 2171 VNET_DECLARE(struct pfi_kkif *, pfi_all); 2172 #define V_pfi_all VNET(pfi_all) 2173 2174 void pfi_initialize(void); 2175 void pfi_initialize_vnet(void); 2176 void pfi_cleanup(void); 2177 void pfi_cleanup_vnet(void); 2178 void pfi_kkif_ref(struct pfi_kkif *); 2179 void pfi_kkif_unref(struct pfi_kkif *); 2180 struct pfi_kkif *pfi_kkif_find(const char *); 2181 struct pfi_kkif *pfi_kkif_attach(struct pfi_kkif *, const char *); 2182 int pfi_kkif_match(struct pfi_kkif *, struct pfi_kkif *); 2183 void pfi_kkif_purge(void); 2184 int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *, 2185 sa_family_t); 2186 int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t); 2187 void pfi_dynaddr_remove(struct pfi_dynaddr *); 2188 void pfi_dynaddr_copyout(struct pf_addr_wrap *); 2189 void pfi_update_status(const char *, struct pf_status *); 2190 void pfi_get_ifaces(const char *, struct pfi_kif *, int *); 2191 int pfi_set_flags(const char *, int); 2192 int pfi_clear_flags(const char *, int); 2193 2194 int pf_match_tag(struct mbuf *, struct pf_krule *, int *, int); 2195 int pf_tag_packet(struct mbuf *, struct pf_pdesc *, int); 2196 int pf_addr_cmp(struct pf_addr *, struct pf_addr *, 2197 sa_family_t); 2198 2199 u_int16_t pf_get_mss(struct mbuf *, int, u_int16_t, sa_family_t); 2200 u_int8_t pf_get_wscale(struct mbuf *, int, u_int16_t, sa_family_t); 2201 struct mbuf *pf_build_tcp(const struct pf_krule *, sa_family_t, 2202 const struct pf_addr *, const struct pf_addr *, 2203 u_int16_t, u_int16_t, u_int32_t, u_int32_t, 2204 u_int8_t, u_int16_t, u_int16_t, u_int8_t, int, 2205 u_int16_t); 2206 void pf_send_tcp(const struct pf_krule *, sa_family_t, 2207 const struct pf_addr *, const struct pf_addr *, 2208 u_int16_t, u_int16_t, u_int32_t, u_int32_t, 2209 u_int8_t, u_int16_t, u_int16_t, u_int8_t, int, 2210 u_int16_t); 2211 2212 void pf_syncookies_init(void); 2213 void pf_syncookies_cleanup(void); 2214 int pf_get_syncookies(struct pfioc_nv *); 2215 int pf_set_syncookies(struct pfioc_nv *); 2216 int pf_synflood_check(struct pf_pdesc *); 2217 void pf_syncookie_send(struct mbuf *m, int off, 2218 struct pf_pdesc *); 2219 u_int8_t pf_syncookie_validate(struct pf_pdesc *); 2220 struct mbuf * pf_syncookie_recreate_syn(uint8_t, int, 2221 struct pf_pdesc *); 2222 2223 VNET_DECLARE(struct pf_kstatus, pf_status); 2224 #define V_pf_status VNET(pf_status) 2225 2226 struct pf_limit { 2227 uma_zone_t zone; 2228 u_int limit; 2229 }; 2230 VNET_DECLARE(struct pf_limit, pf_limits[PF_LIMIT_MAX]); 2231 #define V_pf_limits VNET(pf_limits) 2232 2233 #endif /* _KERNEL */ 2234 2235 #ifdef _KERNEL 2236 VNET_DECLARE(struct pf_kanchor_global, pf_anchors); 2237 #define V_pf_anchors VNET(pf_anchors) 2238 VNET_DECLARE(struct pf_kanchor, pf_main_anchor); 2239 #define V_pf_main_anchor VNET(pf_main_anchor) 2240 VNET_DECLARE(struct pf_keth_anchor_global, pf_keth_anchors); 2241 #define V_pf_keth_anchors VNET(pf_keth_anchors) 2242 #define pf_main_ruleset V_pf_main_anchor.ruleset 2243 2244 VNET_DECLARE(struct pf_keth_anchor, pf_main_keth_anchor); 2245 #define V_pf_main_keth_anchor VNET(pf_main_keth_anchor) 2246 VNET_DECLARE(struct pf_keth_ruleset*, pf_keth); 2247 #define V_pf_keth VNET(pf_keth) 2248 2249 void pf_init_kruleset(struct pf_kruleset *); 2250 void pf_init_keth(struct pf_keth_ruleset *); 2251 int pf_kanchor_setup(struct pf_krule *, 2252 const struct pf_kruleset *, const char *); 2253 int pf_kanchor_nvcopyout(const struct pf_kruleset *, 2254 const struct pf_krule *, nvlist_t *); 2255 int pf_kanchor_copyout(const struct pf_kruleset *, 2256 const struct pf_krule *, struct pfioc_rule *); 2257 void pf_kanchor_remove(struct pf_krule *); 2258 void pf_remove_if_empty_kruleset(struct pf_kruleset *); 2259 struct pf_kruleset *pf_find_kruleset(const char *); 2260 struct pf_kruleset *pf_find_or_create_kruleset(const char *); 2261 void pf_rs_initialize(void); 2262 2263 2264 struct pf_krule *pf_krule_alloc(void); 2265 2266 void pf_remove_if_empty_keth_ruleset( 2267 struct pf_keth_ruleset *); 2268 struct pf_keth_ruleset *pf_find_keth_ruleset(const char *); 2269 struct pf_keth_anchor *pf_find_keth_anchor(const char *); 2270 int pf_keth_anchor_setup(struct pf_keth_rule *, 2271 const struct pf_keth_ruleset *, const char *); 2272 int pf_keth_anchor_nvcopyout( 2273 const struct pf_keth_ruleset *, 2274 const struct pf_keth_rule *, nvlist_t *); 2275 struct pf_keth_ruleset *pf_find_or_create_keth_ruleset(const char *); 2276 void pf_keth_anchor_remove(struct pf_keth_rule *); 2277 2278 void pf_krule_free(struct pf_krule *); 2279 #endif 2280 2281 /* The fingerprint functions can be linked into userland programs (tcpdump) */ 2282 int pf_osfp_add(struct pf_osfp_ioctl *); 2283 #ifdef _KERNEL 2284 struct pf_osfp_enlist * 2285 pf_osfp_fingerprint(struct pf_pdesc *, struct mbuf *, int, 2286 const struct tcphdr *); 2287 #endif /* _KERNEL */ 2288 void pf_osfp_flush(void); 2289 int pf_osfp_get(struct pf_osfp_ioctl *); 2290 int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t); 2291 2292 #ifdef _KERNEL 2293 void pf_print_host(struct pf_addr *, u_int16_t, u_int8_t); 2294 2295 void pf_step_into_anchor(struct pf_kanchor_stackframe *, int *, 2296 struct pf_kruleset **, int, struct pf_krule **, 2297 struct pf_krule **, int *); 2298 int pf_step_out_of_anchor(struct pf_kanchor_stackframe *, int *, 2299 struct pf_kruleset **, int, struct pf_krule **, 2300 struct pf_krule **, int *); 2301 void pf_step_into_keth_anchor(struct pf_keth_anchor_stackframe *, 2302 int *, struct pf_keth_ruleset **, 2303 struct pf_keth_rule **, struct pf_keth_rule **, 2304 int *); 2305 int pf_step_out_of_keth_anchor(struct pf_keth_anchor_stackframe *, 2306 int *, struct pf_keth_ruleset **, 2307 struct pf_keth_rule **, struct pf_keth_rule **, 2308 int *); 2309 2310 int pf_map_addr(u_int8_t, struct pf_krule *, 2311 struct pf_addr *, struct pf_addr *, 2312 struct pf_addr *, struct pf_ksrc_node **); 2313 struct pf_krule *pf_get_translation(struct pf_pdesc *, struct mbuf *, 2314 int, int, struct pfi_kkif *, struct pf_ksrc_node **, 2315 struct pf_state_key **, struct pf_state_key **, 2316 struct pf_addr *, struct pf_addr *, 2317 uint16_t, uint16_t, struct pf_kanchor_stackframe *); 2318 2319 struct pf_state_key *pf_state_key_setup(struct pf_pdesc *, struct pf_addr *, 2320 struct pf_addr *, u_int16_t, u_int16_t); 2321 struct pf_state_key *pf_state_key_clone(struct pf_state_key *); 2322 2323 struct pfi_kkif *pf_kkif_create(int); 2324 void pf_kkif_free(struct pfi_kkif *); 2325 void pf_kkif_zero(struct pfi_kkif *); 2326 #endif /* _KERNEL */ 2327 2328 #endif /* _NET_PFVAR_H_ */ 2329