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