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/malloc.h> 43 #include <sys/nv.h> 44 #include <sys/refcount.h> 45 #include <sys/sdt.h> 46 #include <sys/sysctl.h> 47 #include <sys/lock.h> 48 #include <sys/rmlock.h> 49 #include <sys/tree.h> 50 #include <vm/uma.h> 51 52 #include <net/radix.h> 53 #include <netinet/in.h> 54 #ifdef _KERNEL 55 #include <netinet/ip.h> 56 #include <netinet/tcp.h> 57 #include <netinet/udp.h> 58 #include <netinet/ip_icmp.h> 59 #include <netinet/icmp6.h> 60 #endif 61 62 #include <netpfil/pf/pf.h> 63 #include <netpfil/pf/pf_altq.h> 64 #include <netpfil/pf/pf_mtag.h> 65 66 #ifdef _KERNEL 67 68 SYSCTL_DECL(_net_pf); 69 MALLOC_DECLARE(M_PFHASH); 70 71 SDT_PROVIDER_DECLARE(pf); 72 73 struct pfi_dynaddr { 74 TAILQ_ENTRY(pfi_dynaddr) entry; 75 struct pf_addr pfid_addr4; 76 struct pf_addr pfid_mask4; 77 struct pf_addr pfid_addr6; 78 struct pf_addr pfid_mask6; 79 struct pfr_ktable *pfid_kt; 80 struct pfi_kkif *pfid_kif; 81 int pfid_net; /* mask or 128 */ 82 int pfid_acnt4; /* address count IPv4 */ 83 int pfid_acnt6; /* address count IPv6 */ 84 sa_family_t pfid_af; /* rule af */ 85 u_int8_t pfid_iflags; /* PFI_AFLAG_* */ 86 }; 87 88 /* 89 * Address manipulation macros 90 */ 91 #define HTONL(x) (x) = htonl((__uint32_t)(x)) 92 #define HTONS(x) (x) = htons((__uint16_t)(x)) 93 #define NTOHL(x) (x) = ntohl((__uint32_t)(x)) 94 #define NTOHS(x) (x) = ntohs((__uint16_t)(x)) 95 96 #define PF_NAME "pf" 97 98 #define PF_HASHROW_ASSERT(h) mtx_assert(&(h)->lock, MA_OWNED) 99 #define PF_HASHROW_LOCK(h) mtx_lock(&(h)->lock) 100 #define PF_HASHROW_UNLOCK(h) mtx_unlock(&(h)->lock) 101 102 #define PF_STATE_LOCK(s) \ 103 do { \ 104 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(s)]; \ 105 PF_HASHROW_LOCK(_ih); \ 106 } while (0) 107 108 #define PF_STATE_UNLOCK(s) \ 109 do { \ 110 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH((s))]; \ 111 PF_HASHROW_UNLOCK(_ih); \ 112 } while (0) 113 114 #ifdef INVARIANTS 115 #define PF_STATE_LOCK_ASSERT(s) \ 116 do { \ 117 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(s)]; \ 118 PF_HASHROW_ASSERT(_ih); \ 119 } while (0) 120 #else /* !INVARIANTS */ 121 #define PF_STATE_LOCK_ASSERT(s) do {} while (0) 122 #endif /* INVARIANTS */ 123 124 extern struct mtx_padalign pf_unlnkdrules_mtx; 125 #define PF_UNLNKDRULES_LOCK() mtx_lock(&pf_unlnkdrules_mtx) 126 #define PF_UNLNKDRULES_UNLOCK() mtx_unlock(&pf_unlnkdrules_mtx) 127 128 extern struct rmlock pf_rules_lock; 129 #define PF_RULES_RLOCK_TRACKER struct rm_priotracker _pf_rules_tracker 130 #define PF_RULES_RLOCK() rm_rlock(&pf_rules_lock, &_pf_rules_tracker) 131 #define PF_RULES_RUNLOCK() rm_runlock(&pf_rules_lock, &_pf_rules_tracker) 132 #define PF_RULES_WLOCK() rm_wlock(&pf_rules_lock) 133 #define PF_RULES_WUNLOCK() rm_wunlock(&pf_rules_lock) 134 #define PF_RULES_WOWNED() rm_wowned(&pf_rules_lock) 135 #define PF_RULES_ASSERT() rm_assert(&pf_rules_lock, RA_LOCKED) 136 #define PF_RULES_RASSERT() rm_assert(&pf_rules_lock, RA_RLOCKED) 137 #define PF_RULES_WASSERT() rm_assert(&pf_rules_lock, RA_WLOCKED) 138 139 extern struct mtx_padalign pf_table_stats_lock; 140 #define PF_TABLE_STATS_LOCK() mtx_lock(&pf_table_stats_lock) 141 #define PF_TABLE_STATS_UNLOCK() mtx_unlock(&pf_table_stats_lock) 142 #define PF_TABLE_STATS_OWNED() mtx_owned(&pf_table_stats_lock) 143 #define PF_TABLE_STATS_ASSERT() mtx_assert(&pf_rules_lock, MA_OWNED) 144 145 extern struct sx pf_end_lock; 146 147 #define PF_MODVER 1 148 #define PFLOG_MODVER 1 149 #define PFSYNC_MODVER 1 150 151 #define PFLOG_MINVER 1 152 #define PFLOG_PREFVER PFLOG_MODVER 153 #define PFLOG_MAXVER 1 154 #define PFSYNC_MINVER 1 155 #define PFSYNC_PREFVER PFSYNC_MODVER 156 #define PFSYNC_MAXVER 1 157 158 #ifdef INET 159 #ifndef INET6 160 #define PF_INET_ONLY 161 #endif /* ! INET6 */ 162 #endif /* INET */ 163 164 #ifdef INET6 165 #ifndef INET 166 #define PF_INET6_ONLY 167 #endif /* ! INET */ 168 #endif /* INET6 */ 169 170 #ifdef INET 171 #ifdef INET6 172 #define PF_INET_INET6 173 #endif /* INET6 */ 174 #endif /* INET */ 175 176 #else 177 178 #define PF_INET_INET6 179 180 #endif /* _KERNEL */ 181 182 /* Both IPv4 and IPv6 */ 183 #ifdef PF_INET_INET6 184 185 #define PF_AEQ(a, b, c) \ 186 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \ 187 (c == AF_INET6 && (a)->addr32[3] == (b)->addr32[3] && \ 188 (a)->addr32[2] == (b)->addr32[2] && \ 189 (a)->addr32[1] == (b)->addr32[1] && \ 190 (a)->addr32[0] == (b)->addr32[0])) \ 191 192 #define PF_ANEQ(a, b, c) \ 193 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \ 194 (c == AF_INET6 && ((a)->addr32[0] != (b)->addr32[0] || \ 195 (a)->addr32[1] != (b)->addr32[1] || \ 196 (a)->addr32[2] != (b)->addr32[2] || \ 197 (a)->addr32[3] != (b)->addr32[3]))) \ 198 199 #define PF_AZERO(a, c) \ 200 ((c == AF_INET && !(a)->addr32[0]) || \ 201 (c == AF_INET6 && !(a)->addr32[0] && !(a)->addr32[1] && \ 202 !(a)->addr32[2] && !(a)->addr32[3] )) \ 203 204 #define PF_MATCHA(n, a, m, b, f) \ 205 pf_match_addr(n, a, m, b, f) 206 207 #define PF_ACPY(a, b, f) \ 208 pf_addrcpy(a, b, f) 209 210 #define PF_AINC(a, f) \ 211 pf_addr_inc(a, f) 212 213 #define PF_POOLMASK(a, b, c, d, f) \ 214 pf_poolmask(a, b, c, d, f) 215 216 #else 217 218 /* Just IPv6 */ 219 220 #ifdef PF_INET6_ONLY 221 222 #define PF_AEQ(a, b, c) \ 223 ((a)->addr32[3] == (b)->addr32[3] && \ 224 (a)->addr32[2] == (b)->addr32[2] && \ 225 (a)->addr32[1] == (b)->addr32[1] && \ 226 (a)->addr32[0] == (b)->addr32[0]) \ 227 228 #define PF_ANEQ(a, b, c) \ 229 ((a)->addr32[3] != (b)->addr32[3] || \ 230 (a)->addr32[2] != (b)->addr32[2] || \ 231 (a)->addr32[1] != (b)->addr32[1] || \ 232 (a)->addr32[0] != (b)->addr32[0]) \ 233 234 #define PF_AZERO(a, c) \ 235 (!(a)->addr32[0] && \ 236 !(a)->addr32[1] && \ 237 !(a)->addr32[2] && \ 238 !(a)->addr32[3] ) \ 239 240 #define PF_MATCHA(n, a, m, b, f) \ 241 pf_match_addr(n, a, m, b, f) 242 243 #define PF_ACPY(a, b, f) \ 244 pf_addrcpy(a, b, f) 245 246 #define PF_AINC(a, f) \ 247 pf_addr_inc(a, f) 248 249 #define PF_POOLMASK(a, b, c, d, f) \ 250 pf_poolmask(a, b, c, d, f) 251 252 #else 253 254 /* Just IPv4 */ 255 #ifdef PF_INET_ONLY 256 257 #define PF_AEQ(a, b, c) \ 258 ((a)->addr32[0] == (b)->addr32[0]) 259 260 #define PF_ANEQ(a, b, c) \ 261 ((a)->addr32[0] != (b)->addr32[0]) 262 263 #define PF_AZERO(a, c) \ 264 (!(a)->addr32[0]) 265 266 #define PF_MATCHA(n, a, m, b, f) \ 267 pf_match_addr(n, a, m, b, f) 268 269 #define PF_ACPY(a, b, f) \ 270 (a)->v4.s_addr = (b)->v4.s_addr 271 272 #define PF_AINC(a, f) \ 273 do { \ 274 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \ 275 } while (0) 276 277 #define PF_POOLMASK(a, b, c, d, f) \ 278 do { \ 279 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \ 280 (((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \ 281 } while (0) 282 283 #endif /* PF_INET_ONLY */ 284 #endif /* PF_INET6_ONLY */ 285 #endif /* PF_INET_INET6 */ 286 287 /* 288 * XXX callers not FIB-aware in our version of pf yet. 289 * OpenBSD fixed it later it seems, 2010/05/07 13:33:16 claudio. 290 */ 291 #define PF_MISMATCHAW(aw, x, af, neg, ifp, rtid) \ 292 ( \ 293 (((aw)->type == PF_ADDR_NOROUTE && \ 294 pf_routable((x), (af), NULL, (rtid))) || \ 295 (((aw)->type == PF_ADDR_URPFFAILED && (ifp) != NULL && \ 296 pf_routable((x), (af), (ifp), (rtid))) || \ 297 ((aw)->type == PF_ADDR_TABLE && \ 298 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \ 299 ((aw)->type == PF_ADDR_DYNIFTL && \ 300 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \ 301 ((aw)->type == PF_ADDR_RANGE && \ 302 !pf_match_addr_range(&(aw)->v.a.addr, \ 303 &(aw)->v.a.mask, (x), (af))) || \ 304 ((aw)->type == PF_ADDR_ADDRMASK && \ 305 !PF_AZERO(&(aw)->v.a.mask, (af)) && \ 306 !PF_MATCHA(0, &(aw)->v.a.addr, \ 307 &(aw)->v.a.mask, (x), (af))))) != \ 308 (neg) \ 309 ) 310 311 #define PF_ALGNMNT(off) (((off) % 2) == 0) 312 313 #ifdef _KERNEL 314 315 struct pf_kpooladdr { 316 struct pf_addr_wrap addr; 317 TAILQ_ENTRY(pf_kpooladdr) entries; 318 char ifname[IFNAMSIZ]; 319 struct pfi_kkif *kif; 320 }; 321 322 TAILQ_HEAD(pf_kpalist, pf_kpooladdr); 323 324 struct pf_kpool { 325 struct pf_kpalist list; 326 struct pf_kpooladdr *cur; 327 struct pf_poolhashkey key; 328 struct pf_addr counter; 329 struct pf_mape_portset mape; 330 int tblidx; 331 u_int16_t proxy_port[2]; 332 u_int8_t opts; 333 }; 334 335 struct pf_rule_actions { 336 u_int32_t qid; 337 u_int32_t pqid; 338 }; 339 340 union pf_krule_ptr { 341 struct pf_krule *ptr; 342 u_int32_t nr; 343 }; 344 345 struct pf_krule { 346 struct pf_rule_addr src; 347 struct pf_rule_addr dst; 348 union pf_krule_ptr skip[PF_SKIP_COUNT]; 349 char label[PF_RULE_MAX_LABEL_COUNT][PF_RULE_LABEL_SIZE]; 350 char ifname[IFNAMSIZ]; 351 char qname[PF_QNAME_SIZE]; 352 char pqname[PF_QNAME_SIZE]; 353 char tagname[PF_TAG_NAME_SIZE]; 354 char match_tagname[PF_TAG_NAME_SIZE]; 355 356 char overload_tblname[PF_TABLE_NAME_SIZE]; 357 358 TAILQ_ENTRY(pf_krule) entries; 359 struct pf_kpool rpool; 360 361 counter_u64_t evaluations; 362 counter_u64_t packets[2]; 363 counter_u64_t bytes[2]; 364 365 struct pfi_kkif *kif; 366 struct pf_kanchor *anchor; 367 struct pfr_ktable *overload_tbl; 368 369 pf_osfp_t os_fingerprint; 370 371 int rtableid; 372 u_int32_t timeout[PFTM_MAX]; 373 u_int32_t max_states; 374 u_int32_t max_src_nodes; 375 u_int32_t max_src_states; 376 u_int32_t max_src_conn; 377 struct { 378 u_int32_t limit; 379 u_int32_t seconds; 380 } max_src_conn_rate; 381 u_int32_t qid; 382 u_int32_t pqid; 383 u_int32_t nr; 384 u_int32_t prob; 385 uid_t cuid; 386 pid_t cpid; 387 388 counter_u64_t states_cur; 389 counter_u64_t states_tot; 390 counter_u64_t src_nodes; 391 392 u_int16_t return_icmp; 393 u_int16_t return_icmp6; 394 u_int16_t max_mss; 395 u_int16_t tag; 396 u_int16_t match_tag; 397 u_int16_t scrub_flags; 398 399 struct pf_rule_uid uid; 400 struct pf_rule_gid gid; 401 402 u_int32_t rule_flag; 403 uint32_t rule_ref; 404 u_int8_t action; 405 u_int8_t direction; 406 u_int8_t log; 407 u_int8_t logif; 408 u_int8_t quick; 409 u_int8_t ifnot; 410 u_int8_t match_tag_not; 411 u_int8_t natpass; 412 413 u_int8_t keep_state; 414 sa_family_t af; 415 u_int8_t proto; 416 u_int8_t type; 417 u_int8_t code; 418 u_int8_t flags; 419 u_int8_t flagset; 420 u_int8_t min_ttl; 421 u_int8_t allow_opts; 422 u_int8_t rt; 423 u_int8_t return_ttl; 424 u_int8_t tos; 425 u_int8_t set_tos; 426 u_int8_t anchor_relative; 427 u_int8_t anchor_wildcard; 428 429 u_int8_t flush; 430 u_int8_t prio; 431 u_int8_t set_prio[2]; 432 433 struct { 434 struct pf_addr addr; 435 u_int16_t port; 436 } divert; 437 }; 438 439 struct pf_ksrc_node { 440 LIST_ENTRY(pf_ksrc_node) entry; 441 struct pf_addr addr; 442 struct pf_addr raddr; 443 union pf_krule_ptr rule; 444 struct pfi_kkif *kif; 445 counter_u64_t bytes[2]; 446 counter_u64_t packets[2]; 447 u_int32_t states; 448 u_int32_t conn; 449 struct pf_threshold conn_rate; 450 u_int32_t creation; 451 u_int32_t expire; 452 sa_family_t af; 453 u_int8_t ruletype; 454 }; 455 #endif 456 457 struct pf_state_scrub { 458 struct timeval pfss_last; /* time received last packet */ 459 u_int32_t pfss_tsecr; /* last echoed timestamp */ 460 u_int32_t pfss_tsval; /* largest timestamp */ 461 u_int32_t pfss_tsval0; /* original timestamp */ 462 u_int16_t pfss_flags; 463 #define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */ 464 #define PFSS_PAWS 0x0010 /* stricter PAWS checks */ 465 #define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */ 466 #define PFSS_DATA_TS 0x0040 /* timestamp on data packets */ 467 #define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */ 468 u_int8_t pfss_ttl; /* stashed TTL */ 469 u_int8_t pad; 470 u_int32_t pfss_ts_mod; /* timestamp modulation */ 471 }; 472 473 struct pf_state_host { 474 struct pf_addr addr; 475 u_int16_t port; 476 u_int16_t pad; 477 }; 478 479 struct pf_state_peer { 480 struct pf_state_scrub *scrub; /* state is scrubbed */ 481 u_int32_t seqlo; /* Max sequence number sent */ 482 u_int32_t seqhi; /* Max the other end ACKd + win */ 483 u_int32_t seqdiff; /* Sequence number modulator */ 484 u_int16_t max_win; /* largest window (pre scaling) */ 485 u_int16_t mss; /* Maximum segment size option */ 486 u_int8_t state; /* active state level */ 487 u_int8_t wscale; /* window scaling factor */ 488 u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */ 489 u_int8_t pad[1]; 490 }; 491 492 /* Keep synced with struct pf_state_key. */ 493 struct pf_state_key_cmp { 494 struct pf_addr addr[2]; 495 u_int16_t port[2]; 496 sa_family_t af; 497 u_int8_t proto; 498 u_int8_t pad[2]; 499 }; 500 501 struct pf_state_key { 502 struct pf_addr addr[2]; 503 u_int16_t port[2]; 504 sa_family_t af; 505 u_int8_t proto; 506 u_int8_t pad[2]; 507 508 LIST_ENTRY(pf_state_key) entry; 509 TAILQ_HEAD(, pf_kstate) states[2]; 510 }; 511 512 /* Keep synced with struct pf_kstate. */ 513 struct pf_state_cmp { 514 u_int64_t id; 515 u_int32_t creatorid; 516 u_int8_t direction; 517 u_int8_t pad[3]; 518 }; 519 520 #define PFSTATE_ALLOWOPTS 0x01 521 #define PFSTATE_SLOPPY 0x02 522 /* was PFSTATE_PFLOW 0x04 */ 523 #define PFSTATE_NOSYNC 0x08 524 #define PFSTATE_ACK 0x10 525 #define PFSTATE_SETPRIO 0x0200 526 #define PFSTATE_SETMASK (PFSTATE_SETPRIO) 527 528 struct pf_state_scrub_export { 529 uint16_t pfss_flags; 530 uint8_t pfss_ttl; /* stashed TTL */ 531 #define PF_SCRUB_FLAG_VALID 0x01 532 uint8_t scrub_flag; 533 uint32_t pfss_ts_mod; /* timestamp modulation */ 534 }; 535 536 struct pf_state_key_export { 537 struct pf_addr addr[2]; 538 uint16_t port[2]; 539 }; 540 541 struct pf_state_peer_export { 542 struct pf_state_scrub_export scrub; /* state is scrubbed */ 543 uint32_t seqlo; /* Max sequence number sent */ 544 uint32_t seqhi; /* Max the other end ACKd + win */ 545 uint32_t seqdiff; /* Sequence number modulator */ 546 uint16_t max_win; /* largest window (pre scaling) */ 547 uint16_t mss; /* Maximum segment size option */ 548 uint8_t state; /* active state level */ 549 uint8_t wscale; /* window scaling factor */ 550 uint8_t dummy[6]; 551 }; 552 _Static_assert(sizeof(struct pf_state_peer_export) == 32, "size incorrect"); 553 554 struct pf_state_export { 555 uint64_t version; 556 #define PF_STATE_VERSION 20210706 557 uint64_t id; 558 char ifname[IFNAMSIZ]; 559 char orig_ifname[IFNAMSIZ]; 560 struct pf_state_key_export key[2]; 561 struct pf_state_peer_export src; 562 struct pf_state_peer_export dst; 563 struct pf_addr rt_addr; 564 uint32_t rule; 565 uint32_t anchor; 566 uint32_t nat_rule; 567 uint32_t creation; 568 uint32_t expire; 569 uint32_t spare0; 570 uint64_t packets[2]; 571 uint64_t bytes[2]; 572 uint32_t creatorid; 573 uint32_t spare1; 574 sa_family_t af; 575 uint8_t proto; 576 uint8_t direction; 577 uint8_t log; 578 uint8_t state_flags; 579 uint8_t timeout; 580 uint8_t sync_flags; 581 uint8_t updates; 582 583 uint8_t spare[112]; 584 }; 585 _Static_assert(sizeof(struct pf_state_export) == 384, "size incorrect"); 586 587 #ifdef _KERNEL 588 struct pf_kstate { 589 u_int64_t id; 590 u_int32_t creatorid; 591 u_int8_t direction; 592 u_int8_t pad[3]; 593 594 u_int refs; 595 TAILQ_ENTRY(pf_kstate) sync_list; 596 TAILQ_ENTRY(pf_kstate) key_list[2]; 597 LIST_ENTRY(pf_kstate) entry; 598 struct pf_state_peer src; 599 struct pf_state_peer dst; 600 union pf_krule_ptr rule; 601 union pf_krule_ptr anchor; 602 union pf_krule_ptr nat_rule; 603 struct pf_addr rt_addr; 604 struct pf_state_key *key[2]; /* addresses stack and wire */ 605 struct pfi_kkif *kif; 606 struct pfi_kkif *orig_kif; /* The real kif, even if we're a floating state (i.e. if == V_pfi_all). */ 607 struct pfi_kkif *rt_kif; 608 struct pf_ksrc_node *src_node; 609 struct pf_ksrc_node *nat_src_node; 610 u_int64_t packets[2]; 611 u_int64_t bytes[2]; 612 u_int32_t creation; 613 u_int32_t expire; 614 u_int32_t pfsync_time; 615 u_int32_t qid; 616 u_int32_t pqid; 617 u_int16_t tag; 618 u_int8_t log; 619 u_int8_t state_flags; 620 u_int8_t timeout; 621 u_int8_t sync_state; /* PFSYNC_S_x */ 622 623 /* XXX */ 624 u_int8_t sync_updates; 625 u_int8_t _tail[3]; 626 }; 627 628 /* 629 * Size <= fits 13 objects per page on LP64. Try to not grow the struct beyond that. 630 */ 631 _Static_assert(sizeof(struct pf_kstate) <= 312, "pf_kstate size crosses 312 bytes"); 632 #endif 633 634 /* 635 * Unified state structures for pulling states out of the kernel 636 * used by pfsync(4) and the pf(4) ioctl. 637 */ 638 struct pfsync_state_scrub { 639 u_int16_t pfss_flags; 640 u_int8_t pfss_ttl; /* stashed TTL */ 641 #define PFSYNC_SCRUB_FLAG_VALID 0x01 642 u_int8_t scrub_flag; 643 u_int32_t pfss_ts_mod; /* timestamp modulation */ 644 } __packed; 645 646 struct pfsync_state_peer { 647 struct pfsync_state_scrub scrub; /* state is scrubbed */ 648 u_int32_t seqlo; /* Max sequence number sent */ 649 u_int32_t seqhi; /* Max the other end ACKd + win */ 650 u_int32_t seqdiff; /* Sequence number modulator */ 651 u_int16_t max_win; /* largest window (pre scaling) */ 652 u_int16_t mss; /* Maximum segment size option */ 653 u_int8_t state; /* active state level */ 654 u_int8_t wscale; /* window scaling factor */ 655 u_int8_t pad[6]; 656 } __packed; 657 658 struct pfsync_state_key { 659 struct pf_addr addr[2]; 660 u_int16_t port[2]; 661 }; 662 663 struct pfsync_state { 664 u_int64_t id; 665 char ifname[IFNAMSIZ]; 666 struct pfsync_state_key key[2]; 667 struct pfsync_state_peer src; 668 struct pfsync_state_peer dst; 669 struct pf_addr rt_addr; 670 u_int32_t rule; 671 u_int32_t anchor; 672 u_int32_t nat_rule; 673 u_int32_t creation; 674 u_int32_t expire; 675 u_int32_t packets[2][2]; 676 u_int32_t bytes[2][2]; 677 u_int32_t creatorid; 678 sa_family_t af; 679 u_int8_t proto; 680 u_int8_t direction; 681 u_int8_t __spare[2]; 682 u_int8_t log; 683 u_int8_t state_flags; 684 u_int8_t timeout; 685 u_int8_t sync_flags; 686 u_int8_t updates; 687 } __packed; 688 689 #ifdef _KERNEL 690 /* pfsync */ 691 typedef int pfsync_state_import_t(struct pfsync_state *, u_int8_t); 692 typedef void pfsync_insert_state_t(struct pf_kstate *); 693 typedef void pfsync_update_state_t(struct pf_kstate *); 694 typedef void pfsync_delete_state_t(struct pf_kstate *); 695 typedef void pfsync_clear_states_t(u_int32_t, const char *); 696 typedef int pfsync_defer_t(struct pf_kstate *, struct mbuf *); 697 typedef void pfsync_detach_ifnet_t(struct ifnet *); 698 699 VNET_DECLARE(pfsync_state_import_t *, pfsync_state_import_ptr); 700 #define V_pfsync_state_import_ptr VNET(pfsync_state_import_ptr) 701 VNET_DECLARE(pfsync_insert_state_t *, pfsync_insert_state_ptr); 702 #define V_pfsync_insert_state_ptr VNET(pfsync_insert_state_ptr) 703 VNET_DECLARE(pfsync_update_state_t *, pfsync_update_state_ptr); 704 #define V_pfsync_update_state_ptr VNET(pfsync_update_state_ptr) 705 VNET_DECLARE(pfsync_delete_state_t *, pfsync_delete_state_ptr); 706 #define V_pfsync_delete_state_ptr VNET(pfsync_delete_state_ptr) 707 VNET_DECLARE(pfsync_clear_states_t *, pfsync_clear_states_ptr); 708 #define V_pfsync_clear_states_ptr VNET(pfsync_clear_states_ptr) 709 VNET_DECLARE(pfsync_defer_t *, pfsync_defer_ptr); 710 #define V_pfsync_defer_ptr VNET(pfsync_defer_ptr) 711 extern pfsync_detach_ifnet_t *pfsync_detach_ifnet_ptr; 712 713 void pfsync_state_export(struct pfsync_state *, 714 struct pf_kstate *); 715 void pf_state_export(struct pf_state_export *, 716 struct pf_kstate *); 717 718 /* pflog */ 719 struct pf_kruleset; 720 struct pf_pdesc; 721 typedef int pflog_packet_t(struct pfi_kkif *, struct mbuf *, sa_family_t, 722 u_int8_t, u_int8_t, struct pf_krule *, struct pf_krule *, 723 struct pf_kruleset *, struct pf_pdesc *, int); 724 extern pflog_packet_t *pflog_packet_ptr; 725 726 #endif /* _KERNEL */ 727 728 #define PFSYNC_FLAG_SRCNODE 0x04 729 #define PFSYNC_FLAG_NATSRCNODE 0x08 730 731 /* for copies to/from network byte order */ 732 /* ioctl interface also uses network byte order */ 733 #define pf_state_peer_hton(s,d) do { \ 734 (d)->seqlo = htonl((s)->seqlo); \ 735 (d)->seqhi = htonl((s)->seqhi); \ 736 (d)->seqdiff = htonl((s)->seqdiff); \ 737 (d)->max_win = htons((s)->max_win); \ 738 (d)->mss = htons((s)->mss); \ 739 (d)->state = (s)->state; \ 740 (d)->wscale = (s)->wscale; \ 741 if ((s)->scrub) { \ 742 (d)->scrub.pfss_flags = \ 743 htons((s)->scrub->pfss_flags & PFSS_TIMESTAMP); \ 744 (d)->scrub.pfss_ttl = (s)->scrub->pfss_ttl; \ 745 (d)->scrub.pfss_ts_mod = htonl((s)->scrub->pfss_ts_mod);\ 746 (d)->scrub.scrub_flag = PFSYNC_SCRUB_FLAG_VALID; \ 747 } \ 748 } while (0) 749 750 #define pf_state_peer_ntoh(s,d) do { \ 751 (d)->seqlo = ntohl((s)->seqlo); \ 752 (d)->seqhi = ntohl((s)->seqhi); \ 753 (d)->seqdiff = ntohl((s)->seqdiff); \ 754 (d)->max_win = ntohs((s)->max_win); \ 755 (d)->mss = ntohs((s)->mss); \ 756 (d)->state = (s)->state; \ 757 (d)->wscale = (s)->wscale; \ 758 if ((s)->scrub.scrub_flag == PFSYNC_SCRUB_FLAG_VALID && \ 759 (d)->scrub != NULL) { \ 760 (d)->scrub->pfss_flags = \ 761 ntohs((s)->scrub.pfss_flags) & PFSS_TIMESTAMP; \ 762 (d)->scrub->pfss_ttl = (s)->scrub.pfss_ttl; \ 763 (d)->scrub->pfss_ts_mod = ntohl((s)->scrub.pfss_ts_mod);\ 764 } \ 765 } while (0) 766 767 #define pf_state_counter_hton(s,d) do { \ 768 d[0] = htonl((s>>32)&0xffffffff); \ 769 d[1] = htonl(s&0xffffffff); \ 770 } while (0) 771 772 #define pf_state_counter_from_pfsync(s) \ 773 (((u_int64_t)(s[0])<<32) | (u_int64_t)(s[1])) 774 775 #define pf_state_counter_ntoh(s,d) do { \ 776 d = ntohl(s[0]); \ 777 d = d<<32; \ 778 d += ntohl(s[1]); \ 779 } while (0) 780 781 TAILQ_HEAD(pf_krulequeue, pf_krule); 782 783 struct pf_kanchor; 784 785 struct pf_kruleset { 786 struct { 787 struct pf_krulequeue queues[2]; 788 struct { 789 struct pf_krulequeue *ptr; 790 struct pf_krule **ptr_array; 791 u_int32_t rcount; 792 u_int32_t ticket; 793 int open; 794 } active, inactive; 795 } rules[PF_RULESET_MAX]; 796 struct pf_kanchor *anchor; 797 u_int32_t tticket; 798 int tables; 799 int topen; 800 }; 801 802 RB_HEAD(pf_kanchor_global, pf_kanchor); 803 RB_HEAD(pf_kanchor_node, pf_kanchor); 804 struct pf_kanchor { 805 RB_ENTRY(pf_kanchor) entry_global; 806 RB_ENTRY(pf_kanchor) entry_node; 807 struct pf_kanchor *parent; 808 struct pf_kanchor_node children; 809 char name[PF_ANCHOR_NAME_SIZE]; 810 char path[MAXPATHLEN]; 811 struct pf_kruleset ruleset; 812 int refcnt; /* anchor rules */ 813 int match; /* XXX: used for pfctl black magic */ 814 }; 815 RB_PROTOTYPE(pf_kanchor_global, pf_kanchor, entry_global, pf_anchor_compare); 816 RB_PROTOTYPE(pf_kanchor_node, pf_kanchor, entry_node, pf_kanchor_compare); 817 818 #define PF_RESERVED_ANCHOR "_pf" 819 820 #define PFR_TFLAG_PERSIST 0x00000001 821 #define PFR_TFLAG_CONST 0x00000002 822 #define PFR_TFLAG_ACTIVE 0x00000004 823 #define PFR_TFLAG_INACTIVE 0x00000008 824 #define PFR_TFLAG_REFERENCED 0x00000010 825 #define PFR_TFLAG_REFDANCHOR 0x00000020 826 #define PFR_TFLAG_COUNTERS 0x00000040 827 /* Adjust masks below when adding flags. */ 828 #define PFR_TFLAG_USRMASK (PFR_TFLAG_PERSIST | \ 829 PFR_TFLAG_CONST | \ 830 PFR_TFLAG_COUNTERS) 831 #define PFR_TFLAG_SETMASK (PFR_TFLAG_ACTIVE | \ 832 PFR_TFLAG_INACTIVE | \ 833 PFR_TFLAG_REFERENCED | \ 834 PFR_TFLAG_REFDANCHOR) 835 #define PFR_TFLAG_ALLMASK (PFR_TFLAG_PERSIST | \ 836 PFR_TFLAG_CONST | \ 837 PFR_TFLAG_ACTIVE | \ 838 PFR_TFLAG_INACTIVE | \ 839 PFR_TFLAG_REFERENCED | \ 840 PFR_TFLAG_REFDANCHOR | \ 841 PFR_TFLAG_COUNTERS) 842 843 struct pf_kanchor_stackframe; 844 845 struct pfr_table { 846 char pfrt_anchor[MAXPATHLEN]; 847 char pfrt_name[PF_TABLE_NAME_SIZE]; 848 u_int32_t pfrt_flags; 849 u_int8_t pfrt_fback; 850 }; 851 852 enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED, 853 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE, 854 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_NOCOUNT, PFR_FB_MAX }; 855 856 struct pfr_addr { 857 union { 858 struct in_addr _pfra_ip4addr; 859 struct in6_addr _pfra_ip6addr; 860 } pfra_u; 861 u_int8_t pfra_af; 862 u_int8_t pfra_net; 863 u_int8_t pfra_not; 864 u_int8_t pfra_fback; 865 }; 866 #define pfra_ip4addr pfra_u._pfra_ip4addr 867 #define pfra_ip6addr pfra_u._pfra_ip6addr 868 869 enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX }; 870 enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX }; 871 enum { PFR_TYPE_PACKETS, PFR_TYPE_BYTES, PFR_TYPE_MAX }; 872 #define PFR_NUM_COUNTERS (PFR_DIR_MAX * PFR_OP_ADDR_MAX * PFR_TYPE_MAX) 873 #define PFR_OP_XPASS PFR_OP_ADDR_MAX 874 875 struct pfr_astats { 876 struct pfr_addr pfras_a; 877 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 878 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 879 long pfras_tzero; 880 }; 881 882 enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX }; 883 884 struct pfr_tstats { 885 struct pfr_table pfrts_t; 886 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 887 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 888 u_int64_t pfrts_match; 889 u_int64_t pfrts_nomatch; 890 long pfrts_tzero; 891 int pfrts_cnt; 892 int pfrts_refcnt[PFR_REFCNT_MAX]; 893 }; 894 895 #ifdef _KERNEL 896 897 struct pfr_kstate_counter { 898 counter_u64_t pkc_pcpu; 899 u_int64_t pkc_zero; 900 }; 901 902 static inline int 903 pfr_kstate_counter_init(struct pfr_kstate_counter *pfrc, int flags) 904 { 905 906 pfrc->pkc_zero = 0; 907 pfrc->pkc_pcpu = counter_u64_alloc(flags); 908 if (pfrc->pkc_pcpu == NULL) 909 return (ENOMEM); 910 return (0); 911 } 912 913 static inline void 914 pfr_kstate_counter_deinit(struct pfr_kstate_counter *pfrc) 915 { 916 917 counter_u64_free(pfrc->pkc_pcpu); 918 } 919 920 static inline u_int64_t 921 pfr_kstate_counter_fetch(struct pfr_kstate_counter *pfrc) 922 { 923 u_int64_t c; 924 925 c = counter_u64_fetch(pfrc->pkc_pcpu); 926 c -= pfrc->pkc_zero; 927 return (c); 928 } 929 930 static inline void 931 pfr_kstate_counter_zero(struct pfr_kstate_counter *pfrc) 932 { 933 u_int64_t c; 934 935 c = counter_u64_fetch(pfrc->pkc_pcpu); 936 pfrc->pkc_zero = c; 937 } 938 939 static inline void 940 pfr_kstate_counter_add(struct pfr_kstate_counter *pfrc, int64_t n) 941 { 942 943 counter_u64_add(pfrc->pkc_pcpu, n); 944 } 945 946 struct pfr_ktstats { 947 struct pfr_table pfrts_t; 948 struct pfr_kstate_counter pfrkts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 949 struct pfr_kstate_counter pfrkts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 950 struct pfr_kstate_counter pfrkts_match; 951 struct pfr_kstate_counter pfrkts_nomatch; 952 long pfrkts_tzero; 953 int pfrkts_cnt; 954 int pfrkts_refcnt[PFR_REFCNT_MAX]; 955 }; 956 957 #endif /* _KERNEL */ 958 959 #define pfrts_name pfrts_t.pfrt_name 960 #define pfrts_flags pfrts_t.pfrt_flags 961 962 #ifndef _SOCKADDR_UNION_DEFINED 963 #define _SOCKADDR_UNION_DEFINED 964 union sockaddr_union { 965 struct sockaddr sa; 966 struct sockaddr_in sin; 967 struct sockaddr_in6 sin6; 968 }; 969 #endif /* _SOCKADDR_UNION_DEFINED */ 970 971 struct pfr_kcounters { 972 counter_u64_t pfrkc_counters; 973 long pfrkc_tzero; 974 }; 975 #define pfr_kentry_counter(kc, dir, op, t) \ 976 ((kc)->pfrkc_counters + \ 977 (dir) * PFR_OP_ADDR_MAX * PFR_TYPE_MAX + (op) * PFR_TYPE_MAX + (t)) 978 979 #ifdef _KERNEL 980 SLIST_HEAD(pfr_kentryworkq, pfr_kentry); 981 struct pfr_kentry { 982 struct radix_node pfrke_node[2]; 983 union sockaddr_union pfrke_sa; 984 SLIST_ENTRY(pfr_kentry) pfrke_workq; 985 struct pfr_kcounters pfrke_counters; 986 u_int8_t pfrke_af; 987 u_int8_t pfrke_net; 988 u_int8_t pfrke_not; 989 u_int8_t pfrke_mark; 990 }; 991 992 SLIST_HEAD(pfr_ktableworkq, pfr_ktable); 993 RB_HEAD(pfr_ktablehead, pfr_ktable); 994 struct pfr_ktable { 995 struct pfr_ktstats pfrkt_kts; 996 RB_ENTRY(pfr_ktable) pfrkt_tree; 997 SLIST_ENTRY(pfr_ktable) pfrkt_workq; 998 struct radix_node_head *pfrkt_ip4; 999 struct radix_node_head *pfrkt_ip6; 1000 struct pfr_ktable *pfrkt_shadow; 1001 struct pfr_ktable *pfrkt_root; 1002 struct pf_kruleset *pfrkt_rs; 1003 long pfrkt_larg; 1004 int pfrkt_nflags; 1005 }; 1006 #define pfrkt_t pfrkt_kts.pfrts_t 1007 #define pfrkt_name pfrkt_t.pfrt_name 1008 #define pfrkt_anchor pfrkt_t.pfrt_anchor 1009 #define pfrkt_ruleset pfrkt_t.pfrt_ruleset 1010 #define pfrkt_flags pfrkt_t.pfrt_flags 1011 #define pfrkt_cnt pfrkt_kts.pfrkts_cnt 1012 #define pfrkt_refcnt pfrkt_kts.pfrkts_refcnt 1013 #define pfrkt_packets pfrkt_kts.pfrkts_packets 1014 #define pfrkt_bytes pfrkt_kts.pfrkts_bytes 1015 #define pfrkt_match pfrkt_kts.pfrkts_match 1016 #define pfrkt_nomatch pfrkt_kts.pfrkts_nomatch 1017 #define pfrkt_tzero pfrkt_kts.pfrkts_tzero 1018 #endif 1019 1020 #ifdef _KERNEL 1021 struct pfi_kkif { 1022 char pfik_name[IFNAMSIZ]; 1023 union { 1024 RB_ENTRY(pfi_kkif) _pfik_tree; 1025 LIST_ENTRY(pfi_kkif) _pfik_list; 1026 } _pfik_glue; 1027 #define pfik_tree _pfik_glue._pfik_tree 1028 #define pfik_list _pfik_glue._pfik_list 1029 counter_u64_t pfik_packets[2][2][2]; 1030 counter_u64_t pfik_bytes[2][2][2]; 1031 u_int32_t pfik_tzero; 1032 u_int pfik_flags; 1033 struct ifnet *pfik_ifp; 1034 struct ifg_group *pfik_group; 1035 u_int pfik_rulerefs; 1036 TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs; 1037 }; 1038 #endif 1039 1040 #define PFI_IFLAG_REFS 0x0001 /* has state references */ 1041 #define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */ 1042 1043 #ifdef _KERNEL 1044 struct pf_pdesc { 1045 struct { 1046 int done; 1047 uid_t uid; 1048 gid_t gid; 1049 } lookup; 1050 u_int64_t tot_len; /* Make Mickey money */ 1051 union pf_headers { 1052 struct tcphdr tcp; 1053 struct udphdr udp; 1054 struct icmp icmp; 1055 #ifdef INET6 1056 struct icmp6_hdr icmp6; 1057 #endif /* INET6 */ 1058 char any[0]; 1059 } hdr; 1060 1061 struct pf_krule *nat_rule; /* nat/rdr rule applied to packet */ 1062 struct pf_addr *src; /* src address */ 1063 struct pf_addr *dst; /* dst address */ 1064 u_int16_t *sport; 1065 u_int16_t *dport; 1066 struct pf_mtag *pf_mtag; 1067 struct pf_rule_actions act; 1068 1069 u_int32_t p_len; /* total length of payload */ 1070 1071 u_int16_t *ip_sum; 1072 u_int16_t *proto_sum; 1073 u_int16_t flags; /* Let SCRUB trigger behavior in 1074 * state code. Easier than tags */ 1075 #define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */ 1076 #define PFDESC_IP_REAS 0x0002 /* IP frags would've been reassembled */ 1077 sa_family_t af; 1078 u_int8_t proto; 1079 u_int8_t tos; 1080 u_int8_t dir; /* direction */ 1081 u_int8_t sidx; /* key index for source */ 1082 u_int8_t didx; /* key index for destination */ 1083 }; 1084 #endif 1085 1086 /* flags for RDR options */ 1087 #define PF_DPORT_RANGE 0x01 /* Dest port uses range */ 1088 #define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */ 1089 1090 /* UDP state enumeration */ 1091 #define PFUDPS_NO_TRAFFIC 0 1092 #define PFUDPS_SINGLE 1 1093 #define PFUDPS_MULTIPLE 2 1094 1095 #define PFUDPS_NSTATES 3 /* number of state levels */ 1096 1097 #define PFUDPS_NAMES { \ 1098 "NO_TRAFFIC", \ 1099 "SINGLE", \ 1100 "MULTIPLE", \ 1101 NULL \ 1102 } 1103 1104 /* Other protocol state enumeration */ 1105 #define PFOTHERS_NO_TRAFFIC 0 1106 #define PFOTHERS_SINGLE 1 1107 #define PFOTHERS_MULTIPLE 2 1108 1109 #define PFOTHERS_NSTATES 3 /* number of state levels */ 1110 1111 #define PFOTHERS_NAMES { \ 1112 "NO_TRAFFIC", \ 1113 "SINGLE", \ 1114 "MULTIPLE", \ 1115 NULL \ 1116 } 1117 1118 #define ACTION_SET(a, x) \ 1119 do { \ 1120 if ((a) != NULL) \ 1121 *(a) = (x); \ 1122 } while (0) 1123 1124 #define REASON_SET(a, x) \ 1125 do { \ 1126 if ((a) != NULL) \ 1127 *(a) = (x); \ 1128 if (x < PFRES_MAX) \ 1129 counter_u64_add(V_pf_status.counters[x], 1); \ 1130 } while (0) 1131 1132 struct pf_kstatus { 1133 counter_u64_t counters[PFRES_MAX]; /* reason for passing/dropping */ 1134 counter_u64_t lcounters[LCNT_MAX]; /* limit counters */ 1135 counter_u64_t fcounters[FCNT_MAX]; /* state operation counters */ 1136 counter_u64_t scounters[SCNT_MAX]; /* src_node operation counters */ 1137 uint32_t states; 1138 uint32_t src_nodes; 1139 uint32_t running; 1140 uint32_t since; 1141 uint32_t debug; 1142 uint32_t hostid; 1143 char ifname[IFNAMSIZ]; 1144 uint8_t pf_chksum[PF_MD5_DIGEST_LENGTH]; 1145 bool keep_counters; 1146 }; 1147 1148 struct pf_divert { 1149 union { 1150 struct in_addr ipv4; 1151 struct in6_addr ipv6; 1152 } addr; 1153 u_int16_t port; 1154 }; 1155 1156 #define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */ 1157 #define PFR_KENTRY_HIWAT 200000 /* Number of table entries */ 1158 1159 /* 1160 * Limit the length of the fragment queue traversal. Remember 1161 * search entry points based on the fragment offset. 1162 */ 1163 #define PF_FRAG_ENTRY_POINTS 16 1164 1165 /* 1166 * The number of entries in the fragment queue must be limited 1167 * to avoid DoS by linear seaching. Instead of a global limit, 1168 * use a limit per entry point. For large packets these sum up. 1169 */ 1170 #define PF_FRAG_ENTRY_LIMIT 64 1171 1172 /* 1173 * ioctl parameter structures 1174 */ 1175 1176 struct pfioc_pooladdr { 1177 u_int32_t action; 1178 u_int32_t ticket; 1179 u_int32_t nr; 1180 u_int32_t r_num; 1181 u_int8_t r_action; 1182 u_int8_t r_last; 1183 u_int8_t af; 1184 char anchor[MAXPATHLEN]; 1185 struct pf_pooladdr addr; 1186 }; 1187 1188 struct pfioc_rule { 1189 u_int32_t action; 1190 u_int32_t ticket; 1191 u_int32_t pool_ticket; 1192 u_int32_t nr; 1193 char anchor[MAXPATHLEN]; 1194 char anchor_call[MAXPATHLEN]; 1195 struct pf_rule rule; 1196 }; 1197 1198 struct pfioc_natlook { 1199 struct pf_addr saddr; 1200 struct pf_addr daddr; 1201 struct pf_addr rsaddr; 1202 struct pf_addr rdaddr; 1203 u_int16_t sport; 1204 u_int16_t dport; 1205 u_int16_t rsport; 1206 u_int16_t rdport; 1207 sa_family_t af; 1208 u_int8_t proto; 1209 u_int8_t direction; 1210 }; 1211 1212 struct pfioc_state { 1213 struct pfsync_state state; 1214 }; 1215 1216 struct pfioc_src_node_kill { 1217 sa_family_t psnk_af; 1218 struct pf_rule_addr psnk_src; 1219 struct pf_rule_addr psnk_dst; 1220 u_int psnk_killed; 1221 }; 1222 1223 #ifdef _KERNEL 1224 struct pf_kstate_kill { 1225 struct pf_state_cmp psk_pfcmp; 1226 sa_family_t psk_af; 1227 int psk_proto; 1228 struct pf_rule_addr psk_src; 1229 struct pf_rule_addr psk_dst; 1230 struct pf_rule_addr psk_rt_addr; 1231 char psk_ifname[IFNAMSIZ]; 1232 char psk_label[PF_RULE_LABEL_SIZE]; 1233 u_int psk_killed; 1234 bool psk_kill_match; 1235 }; 1236 #endif 1237 1238 struct pfioc_state_kill { 1239 struct pf_state_cmp psk_pfcmp; 1240 sa_family_t psk_af; 1241 int psk_proto; 1242 struct pf_rule_addr psk_src; 1243 struct pf_rule_addr psk_dst; 1244 char psk_ifname[IFNAMSIZ]; 1245 char psk_label[PF_RULE_LABEL_SIZE]; 1246 u_int psk_killed; 1247 }; 1248 1249 struct pfioc_states { 1250 int ps_len; 1251 union { 1252 caddr_t psu_buf; 1253 struct pfsync_state *psu_states; 1254 } ps_u; 1255 #define ps_buf ps_u.psu_buf 1256 #define ps_states ps_u.psu_states 1257 }; 1258 1259 struct pfioc_states_v2 { 1260 int ps_len; 1261 uint64_t ps_req_version; 1262 union { 1263 caddr_t psu_buf; 1264 struct pf_state_export *psu_states; 1265 } ps_u; 1266 #define ps_buf ps_u.psu_buf 1267 #define ps_states ps_u.psu_states 1268 }; 1269 1270 struct pfioc_src_nodes { 1271 int psn_len; 1272 union { 1273 caddr_t psu_buf; 1274 struct pf_src_node *psu_src_nodes; 1275 } psn_u; 1276 #define psn_buf psn_u.psu_buf 1277 #define psn_src_nodes psn_u.psu_src_nodes 1278 }; 1279 1280 struct pfioc_if { 1281 char ifname[IFNAMSIZ]; 1282 }; 1283 1284 struct pfioc_tm { 1285 int timeout; 1286 int seconds; 1287 }; 1288 1289 struct pfioc_limit { 1290 int index; 1291 unsigned limit; 1292 }; 1293 1294 struct pfioc_altq_v0 { 1295 u_int32_t action; 1296 u_int32_t ticket; 1297 u_int32_t nr; 1298 struct pf_altq_v0 altq; 1299 }; 1300 1301 struct pfioc_altq_v1 { 1302 u_int32_t action; 1303 u_int32_t ticket; 1304 u_int32_t nr; 1305 /* 1306 * Placed here so code that only uses the above parameters can be 1307 * written entirely in terms of the v0 or v1 type. 1308 */ 1309 u_int32_t version; 1310 struct pf_altq_v1 altq; 1311 }; 1312 1313 /* 1314 * Latest version of struct pfioc_altq_vX. This must move in lock-step with 1315 * the latest version of struct pf_altq_vX as it has that struct as a 1316 * member. 1317 */ 1318 #define PFIOC_ALTQ_VERSION PF_ALTQ_VERSION 1319 1320 struct pfioc_qstats_v0 { 1321 u_int32_t ticket; 1322 u_int32_t nr; 1323 void *buf; 1324 int nbytes; 1325 u_int8_t scheduler; 1326 }; 1327 1328 struct pfioc_qstats_v1 { 1329 u_int32_t ticket; 1330 u_int32_t nr; 1331 void *buf; 1332 int nbytes; 1333 u_int8_t scheduler; 1334 /* 1335 * Placed here so code that only uses the above parameters can be 1336 * written entirely in terms of the v0 or v1 type. 1337 */ 1338 u_int32_t version; /* Requested version of stats struct */ 1339 }; 1340 1341 /* Latest version of struct pfioc_qstats_vX */ 1342 #define PFIOC_QSTATS_VERSION 1 1343 1344 struct pfioc_ruleset { 1345 u_int32_t nr; 1346 char path[MAXPATHLEN]; 1347 char name[PF_ANCHOR_NAME_SIZE]; 1348 }; 1349 1350 #define PF_RULESET_ALTQ (PF_RULESET_MAX) 1351 #define PF_RULESET_TABLE (PF_RULESET_MAX+1) 1352 struct pfioc_trans { 1353 int size; /* number of elements */ 1354 int esize; /* size of each element in bytes */ 1355 struct pfioc_trans_e { 1356 int rs_num; 1357 char anchor[MAXPATHLEN]; 1358 u_int32_t ticket; 1359 } *array; 1360 }; 1361 1362 #define PFR_FLAG_ATOMIC 0x00000001 /* unused */ 1363 #define PFR_FLAG_DUMMY 0x00000002 1364 #define PFR_FLAG_FEEDBACK 0x00000004 1365 #define PFR_FLAG_CLSTATS 0x00000008 1366 #define PFR_FLAG_ADDRSTOO 0x00000010 1367 #define PFR_FLAG_REPLACE 0x00000020 1368 #define PFR_FLAG_ALLRSETS 0x00000040 1369 #define PFR_FLAG_ALLMASK 0x0000007F 1370 #ifdef _KERNEL 1371 #define PFR_FLAG_USERIOCTL 0x10000000 1372 #endif 1373 1374 struct pfioc_table { 1375 struct pfr_table pfrio_table; 1376 void *pfrio_buffer; 1377 int pfrio_esize; 1378 int pfrio_size; 1379 int pfrio_size2; 1380 int pfrio_nadd; 1381 int pfrio_ndel; 1382 int pfrio_nchange; 1383 int pfrio_flags; 1384 u_int32_t pfrio_ticket; 1385 }; 1386 #define pfrio_exists pfrio_nadd 1387 #define pfrio_nzero pfrio_nadd 1388 #define pfrio_nmatch pfrio_nadd 1389 #define pfrio_naddr pfrio_size2 1390 #define pfrio_setflag pfrio_size2 1391 #define pfrio_clrflag pfrio_nadd 1392 1393 struct pfioc_iface { 1394 char pfiio_name[IFNAMSIZ]; 1395 void *pfiio_buffer; 1396 int pfiio_esize; 1397 int pfiio_size; 1398 int pfiio_nzero; 1399 int pfiio_flags; 1400 }; 1401 1402 /* 1403 * ioctl operations 1404 */ 1405 1406 #define DIOCSTART _IO ('D', 1) 1407 #define DIOCSTOP _IO ('D', 2) 1408 #define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule) 1409 #define DIOCADDRULENV _IOWR('D', 4, struct pfioc_nv) 1410 #define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule) 1411 #define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule) 1412 #define DIOCGETRULENV _IOWR('D', 7, struct pfioc_nv) 1413 /* XXX cut 8 - 17 */ 1414 #define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill) 1415 #define DIOCCLRSTATESNV _IOWR('D', 18, struct pfioc_nv) 1416 #define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state) 1417 #define DIOCGETSTATENV _IOWR('D', 19, struct pfioc_nv) 1418 #define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if) 1419 #define DIOCGETSTATUS _IOWR('D', 21, struct pf_status) 1420 #define DIOCCLRSTATUS _IO ('D', 22) 1421 #define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook) 1422 #define DIOCSETDEBUG _IOWR('D', 24, u_int32_t) 1423 #define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states) 1424 #define DIOCGETSTATESNV _IOWR('D', 25, struct pfioc_nv) 1425 #define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule) 1426 /* XXX cut 26 - 28 */ 1427 #define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm) 1428 #define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm) 1429 #define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state) 1430 #define DIOCCLRRULECTRS _IO ('D', 38) 1431 #define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit) 1432 #define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit) 1433 #define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill) 1434 #define DIOCKILLSTATESNV _IOWR('D', 41, struct pfioc_nv) 1435 #define DIOCSTARTALTQ _IO ('D', 42) 1436 #define DIOCSTOPALTQ _IO ('D', 43) 1437 #define DIOCADDALTQV0 _IOWR('D', 45, struct pfioc_altq_v0) 1438 #define DIOCADDALTQV1 _IOWR('D', 45, struct pfioc_altq_v1) 1439 #define DIOCGETALTQSV0 _IOWR('D', 47, struct pfioc_altq_v0) 1440 #define DIOCGETALTQSV1 _IOWR('D', 47, struct pfioc_altq_v1) 1441 #define DIOCGETALTQV0 _IOWR('D', 48, struct pfioc_altq_v0) 1442 #define DIOCGETALTQV1 _IOWR('D', 48, struct pfioc_altq_v1) 1443 #define DIOCCHANGEALTQV0 _IOWR('D', 49, struct pfioc_altq_v0) 1444 #define DIOCCHANGEALTQV1 _IOWR('D', 49, struct pfioc_altq_v1) 1445 #define DIOCGETQSTATSV0 _IOWR('D', 50, struct pfioc_qstats_v0) 1446 #define DIOCGETQSTATSV1 _IOWR('D', 50, struct pfioc_qstats_v1) 1447 #define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr) 1448 #define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr) 1449 #define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr) 1450 #define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr) 1451 #define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr) 1452 /* XXX cut 55 - 57 */ 1453 #define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset) 1454 #define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset) 1455 #define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table) 1456 #define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table) 1457 #define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table) 1458 #define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table) 1459 #define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table) 1460 #define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table) 1461 #define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table) 1462 #define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table) 1463 #define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table) 1464 #define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table) 1465 #define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table) 1466 #define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table) 1467 #define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table) 1468 #define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table) 1469 #define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table) 1470 #define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table) 1471 #define DIOCOSFPFLUSH _IO('D', 78) 1472 #define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl) 1473 #define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl) 1474 #define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans) 1475 #define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans) 1476 #define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans) 1477 #define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes) 1478 #define DIOCCLRSRCNODES _IO('D', 85) 1479 #define DIOCSETHOSTID _IOWR('D', 86, u_int32_t) 1480 #define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface) 1481 #define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface) 1482 #define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface) 1483 #define DIOCKILLSRCNODES _IOWR('D', 91, struct pfioc_src_node_kill) 1484 #define DIOCKEEPCOUNTERS _IOWR('D', 92, struct pfioc_nv) 1485 #define DIOCGETSTATESV2 _IOWR('D', 93, struct pfioc_states_v2) 1486 1487 struct pf_ifspeed_v0 { 1488 char ifname[IFNAMSIZ]; 1489 u_int32_t baudrate; 1490 }; 1491 1492 struct pf_ifspeed_v1 { 1493 char ifname[IFNAMSIZ]; 1494 u_int32_t baudrate32; 1495 /* layout identical to struct pf_ifspeed_v0 up to this point */ 1496 u_int64_t baudrate; 1497 }; 1498 1499 /* Latest version of struct pf_ifspeed_vX */ 1500 #define PF_IFSPEED_VERSION 1 1501 1502 #define DIOCGIFSPEEDV0 _IOWR('D', 92, struct pf_ifspeed_v0) 1503 #define DIOCGIFSPEEDV1 _IOWR('D', 92, struct pf_ifspeed_v1) 1504 1505 /* 1506 * Compatibility and convenience macros 1507 */ 1508 #ifndef _KERNEL 1509 #ifdef PFIOC_USE_LATEST 1510 /* 1511 * Maintaining in-tree consumers of the ioctl interface is easier when that 1512 * code can be written in terms old names that refer to the latest interface 1513 * version as that reduces the required changes in the consumers to those 1514 * that are functionally necessary to accommodate a new interface version. 1515 */ 1516 #define pfioc_altq __CONCAT(pfioc_altq_v, PFIOC_ALTQ_VERSION) 1517 #define pfioc_qstats __CONCAT(pfioc_qstats_v, PFIOC_QSTATS_VERSION) 1518 #define pf_ifspeed __CONCAT(pf_ifspeed_v, PF_IFSPEED_VERSION) 1519 1520 #define DIOCADDALTQ __CONCAT(DIOCADDALTQV, PFIOC_ALTQ_VERSION) 1521 #define DIOCGETALTQS __CONCAT(DIOCGETALTQSV, PFIOC_ALTQ_VERSION) 1522 #define DIOCGETALTQ __CONCAT(DIOCGETALTQV, PFIOC_ALTQ_VERSION) 1523 #define DIOCCHANGEALTQ __CONCAT(DIOCCHANGEALTQV, PFIOC_ALTQ_VERSION) 1524 #define DIOCGETQSTATS __CONCAT(DIOCGETQSTATSV, PFIOC_QSTATS_VERSION) 1525 #define DIOCGIFSPEED __CONCAT(DIOCGIFSPEEDV, PF_IFSPEED_VERSION) 1526 #else 1527 /* 1528 * When building out-of-tree code that is written for the old interface, 1529 * such as may exist in ports for example, resolve the old struct tags and 1530 * ioctl command names to the v0 versions. 1531 */ 1532 #define pfioc_altq __CONCAT(pfioc_altq_v, 0) 1533 #define pfioc_qstats __CONCAT(pfioc_qstats_v, 0) 1534 #define pf_ifspeed __CONCAT(pf_ifspeed_v, 0) 1535 1536 #define DIOCADDALTQ __CONCAT(DIOCADDALTQV, 0) 1537 #define DIOCGETALTQS __CONCAT(DIOCGETALTQSV, 0) 1538 #define DIOCGETALTQ __CONCAT(DIOCGETALTQV, 0) 1539 #define DIOCCHANGEALTQ __CONCAT(DIOCCHANGEALTQV, 0) 1540 #define DIOCGETQSTATS __CONCAT(DIOCGETQSTATSV, 0) 1541 #define DIOCGIFSPEED __CONCAT(DIOCGIFSPEEDV, 0) 1542 #endif /* PFIOC_USE_LATEST */ 1543 #endif /* _KERNEL */ 1544 1545 #ifdef _KERNEL 1546 LIST_HEAD(pf_ksrc_node_list, pf_ksrc_node); 1547 struct pf_srchash { 1548 struct pf_ksrc_node_list nodes; 1549 struct mtx lock; 1550 }; 1551 1552 struct pf_keyhash { 1553 LIST_HEAD(, pf_state_key) keys; 1554 struct mtx lock; 1555 }; 1556 1557 struct pf_idhash { 1558 LIST_HEAD(, pf_kstate) states; 1559 struct mtx lock; 1560 }; 1561 1562 extern u_long pf_hashmask; 1563 extern u_long pf_srchashmask; 1564 #define PF_HASHSIZ (131072) 1565 #define PF_SRCHASHSIZ (PF_HASHSIZ/4) 1566 VNET_DECLARE(struct pf_keyhash *, pf_keyhash); 1567 VNET_DECLARE(struct pf_idhash *, pf_idhash); 1568 #define V_pf_keyhash VNET(pf_keyhash) 1569 #define V_pf_idhash VNET(pf_idhash) 1570 VNET_DECLARE(struct pf_srchash *, pf_srchash); 1571 #define V_pf_srchash VNET(pf_srchash) 1572 1573 #define PF_IDHASH(s) (be64toh((s)->id) % (pf_hashmask + 1)) 1574 1575 VNET_DECLARE(void *, pf_swi_cookie); 1576 #define V_pf_swi_cookie VNET(pf_swi_cookie) 1577 VNET_DECLARE(struct intr_event *, pf_swi_ie); 1578 #define V_pf_swi_ie VNET(pf_swi_ie) 1579 1580 VNET_DECLARE(uint64_t, pf_stateid[MAXCPU]); 1581 #define V_pf_stateid VNET(pf_stateid) 1582 1583 TAILQ_HEAD(pf_altqqueue, pf_altq); 1584 VNET_DECLARE(struct pf_altqqueue, pf_altqs[4]); 1585 #define V_pf_altqs VNET(pf_altqs) 1586 VNET_DECLARE(struct pf_kpalist, pf_pabuf); 1587 #define V_pf_pabuf VNET(pf_pabuf) 1588 1589 VNET_DECLARE(u_int32_t, ticket_altqs_active); 1590 #define V_ticket_altqs_active VNET(ticket_altqs_active) 1591 VNET_DECLARE(u_int32_t, ticket_altqs_inactive); 1592 #define V_ticket_altqs_inactive VNET(ticket_altqs_inactive) 1593 VNET_DECLARE(int, altqs_inactive_open); 1594 #define V_altqs_inactive_open VNET(altqs_inactive_open) 1595 VNET_DECLARE(u_int32_t, ticket_pabuf); 1596 #define V_ticket_pabuf VNET(ticket_pabuf) 1597 VNET_DECLARE(struct pf_altqqueue *, pf_altqs_active); 1598 #define V_pf_altqs_active VNET(pf_altqs_active) 1599 VNET_DECLARE(struct pf_altqqueue *, pf_altq_ifs_active); 1600 #define V_pf_altq_ifs_active VNET(pf_altq_ifs_active) 1601 VNET_DECLARE(struct pf_altqqueue *, pf_altqs_inactive); 1602 #define V_pf_altqs_inactive VNET(pf_altqs_inactive) 1603 VNET_DECLARE(struct pf_altqqueue *, pf_altq_ifs_inactive); 1604 #define V_pf_altq_ifs_inactive VNET(pf_altq_ifs_inactive) 1605 1606 VNET_DECLARE(struct pf_krulequeue, pf_unlinked_rules); 1607 #define V_pf_unlinked_rules VNET(pf_unlinked_rules) 1608 1609 void pf_initialize(void); 1610 void pf_mtag_initialize(void); 1611 void pf_mtag_cleanup(void); 1612 void pf_cleanup(void); 1613 1614 struct pf_mtag *pf_get_mtag(struct mbuf *); 1615 1616 extern void pf_calc_skip_steps(struct pf_krulequeue *); 1617 #ifdef ALTQ 1618 extern void pf_altq_ifnet_event(struct ifnet *, int); 1619 #endif 1620 VNET_DECLARE(uma_zone_t, pf_state_z); 1621 #define V_pf_state_z VNET(pf_state_z) 1622 VNET_DECLARE(uma_zone_t, pf_state_key_z); 1623 #define V_pf_state_key_z VNET(pf_state_key_z) 1624 VNET_DECLARE(uma_zone_t, pf_state_scrub_z); 1625 #define V_pf_state_scrub_z VNET(pf_state_scrub_z) 1626 1627 extern void pf_purge_thread(void *); 1628 extern void pf_unload_vnet_purge(void); 1629 extern void pf_intr(void *); 1630 extern void pf_purge_expired_src_nodes(void); 1631 1632 extern int pf_unlink_state(struct pf_kstate *, u_int); 1633 #define PF_ENTER_LOCKED 0x00000001 1634 #define PF_RETURN_LOCKED 0x00000002 1635 extern int pf_state_insert(struct pfi_kkif *, 1636 struct pfi_kkif *, 1637 struct pf_state_key *, 1638 struct pf_state_key *, 1639 struct pf_kstate *); 1640 extern struct pf_kstate *pf_alloc_state(int); 1641 extern void pf_free_state(struct pf_kstate *); 1642 1643 static __inline void 1644 pf_ref_state(struct pf_kstate *s) 1645 { 1646 1647 refcount_acquire(&s->refs); 1648 } 1649 1650 static __inline int 1651 pf_release_state(struct pf_kstate *s) 1652 { 1653 1654 if (refcount_release(&s->refs)) { 1655 pf_free_state(s); 1656 return (1); 1657 } else 1658 return (0); 1659 } 1660 1661 static __inline int 1662 pf_release_staten(struct pf_kstate *s, u_int n) 1663 { 1664 1665 if (refcount_releasen(&s->refs, n)) { 1666 pf_free_state(s); 1667 return (1); 1668 } else 1669 return (0); 1670 } 1671 1672 extern struct pf_kstate *pf_find_state_byid(uint64_t, uint32_t); 1673 extern struct pf_kstate *pf_find_state_all(struct pf_state_key_cmp *, 1674 u_int, int *); 1675 extern bool pf_find_state_all_exists(struct pf_state_key_cmp *, 1676 u_int); 1677 extern struct pf_ksrc_node *pf_find_src_node(struct pf_addr *, 1678 struct pf_krule *, sa_family_t, int); 1679 extern void pf_unlink_src_node(struct pf_ksrc_node *); 1680 extern u_int pf_free_src_nodes(struct pf_ksrc_node_list *); 1681 extern void pf_print_state(struct pf_kstate *); 1682 extern void pf_print_flags(u_int8_t); 1683 extern u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t, 1684 u_int8_t); 1685 extern u_int16_t pf_proto_cksum_fixup(struct mbuf *, u_int16_t, 1686 u_int16_t, u_int16_t, u_int8_t); 1687 1688 VNET_DECLARE(struct ifnet *, sync_ifp); 1689 #define V_sync_ifp VNET(sync_ifp); 1690 VNET_DECLARE(struct pf_krule, pf_default_rule); 1691 #define V_pf_default_rule VNET(pf_default_rule) 1692 extern void pf_addrcpy(struct pf_addr *, struct pf_addr *, 1693 u_int8_t); 1694 void pf_free_rule(struct pf_krule *); 1695 1696 #ifdef INET 1697 int pf_test(int, int, struct ifnet *, struct mbuf **, struct inpcb *); 1698 int pf_normalize_ip(struct mbuf **, int, struct pfi_kkif *, u_short *, 1699 struct pf_pdesc *); 1700 #endif /* INET */ 1701 1702 #ifdef INET6 1703 int pf_test6(int, int, struct ifnet *, struct mbuf **, struct inpcb *); 1704 int pf_normalize_ip6(struct mbuf **, int, struct pfi_kkif *, u_short *, 1705 struct pf_pdesc *); 1706 void pf_poolmask(struct pf_addr *, struct pf_addr*, 1707 struct pf_addr *, struct pf_addr *, u_int8_t); 1708 void pf_addr_inc(struct pf_addr *, sa_family_t); 1709 int pf_refragment6(struct ifnet *, struct mbuf **, struct m_tag *); 1710 #endif /* INET6 */ 1711 1712 u_int32_t pf_new_isn(struct pf_kstate *); 1713 void *pf_pull_hdr(struct mbuf *, int, void *, int, u_short *, u_short *, 1714 sa_family_t); 1715 void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t); 1716 void pf_change_proto_a(struct mbuf *, void *, u_int16_t *, u_int32_t, 1717 u_int8_t); 1718 void pf_change_tcp_a(struct mbuf *, void *, u_int16_t *, u_int32_t); 1719 void pf_patch_16_unaligned(struct mbuf *, u_int16_t *, void *, u_int16_t, 1720 bool, u_int8_t); 1721 void pf_patch_32_unaligned(struct mbuf *, u_int16_t *, void *, u_int32_t, 1722 bool, u_int8_t); 1723 void pf_send_deferred_syn(struct pf_kstate *); 1724 int pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *, 1725 struct pf_addr *, sa_family_t); 1726 int pf_match_addr_range(struct pf_addr *, struct pf_addr *, 1727 struct pf_addr *, sa_family_t); 1728 int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t); 1729 1730 void pf_normalize_init(void); 1731 void pf_normalize_cleanup(void); 1732 int pf_normalize_tcp(int, struct pfi_kkif *, struct mbuf *, int, int, void *, 1733 struct pf_pdesc *); 1734 void pf_normalize_tcp_cleanup(struct pf_kstate *); 1735 int pf_normalize_tcp_init(struct mbuf *, int, struct pf_pdesc *, 1736 struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *); 1737 int pf_normalize_tcp_stateful(struct mbuf *, int, struct pf_pdesc *, 1738 u_short *, struct tcphdr *, struct pf_kstate *, 1739 struct pf_state_peer *, struct pf_state_peer *, int *); 1740 u_int32_t 1741 pf_state_expires(const struct pf_kstate *); 1742 void pf_purge_expired_fragments(void); 1743 void pf_purge_fragments(uint32_t); 1744 int pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kkif *, 1745 int); 1746 int pf_socket_lookup(int, struct pf_pdesc *, struct mbuf *); 1747 struct pf_state_key *pf_alloc_state_key(int); 1748 void pfr_initialize(void); 1749 void pfr_cleanup(void); 1750 int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t); 1751 void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t, 1752 u_int64_t, int, int, int); 1753 int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, sa_family_t); 1754 void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *); 1755 struct pfr_ktable * 1756 pfr_attach_table(struct pf_kruleset *, char *); 1757 void pfr_detach_table(struct pfr_ktable *); 1758 int pfr_clr_tables(struct pfr_table *, int *, int); 1759 int pfr_add_tables(struct pfr_table *, int, int *, int); 1760 int pfr_del_tables(struct pfr_table *, int, int *, int); 1761 int pfr_table_count(struct pfr_table *, int); 1762 int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int); 1763 int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int); 1764 int pfr_clr_tstats(struct pfr_table *, int, int *, int); 1765 int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int); 1766 int pfr_clr_addrs(struct pfr_table *, int *, int); 1767 int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *, long); 1768 int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1769 int); 1770 int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1771 int); 1772 int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1773 int *, int *, int *, int, u_int32_t); 1774 int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int); 1775 int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int); 1776 int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *, 1777 int); 1778 int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1779 int); 1780 int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int); 1781 int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int); 1782 int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int); 1783 int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *, 1784 int *, u_int32_t, int); 1785 1786 MALLOC_DECLARE(PFI_MTYPE); 1787 VNET_DECLARE(struct pfi_kkif *, pfi_all); 1788 #define V_pfi_all VNET(pfi_all) 1789 1790 void pfi_initialize(void); 1791 void pfi_initialize_vnet(void); 1792 void pfi_cleanup(void); 1793 void pfi_cleanup_vnet(void); 1794 void pfi_kkif_ref(struct pfi_kkif *); 1795 void pfi_kkif_unref(struct pfi_kkif *); 1796 struct pfi_kkif *pfi_kkif_find(const char *); 1797 struct pfi_kkif *pfi_kkif_attach(struct pfi_kkif *, const char *); 1798 int pfi_kkif_match(struct pfi_kkif *, struct pfi_kkif *); 1799 void pfi_kkif_purge(void); 1800 int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *, 1801 sa_family_t); 1802 int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t); 1803 void pfi_dynaddr_remove(struct pfi_dynaddr *); 1804 void pfi_dynaddr_copyout(struct pf_addr_wrap *); 1805 void pfi_update_status(const char *, struct pf_status *); 1806 void pfi_get_ifaces(const char *, struct pfi_kif *, int *); 1807 int pfi_set_flags(const char *, int); 1808 int pfi_clear_flags(const char *, int); 1809 1810 int pf_match_tag(struct mbuf *, struct pf_krule *, int *, int); 1811 int pf_tag_packet(struct mbuf *, struct pf_pdesc *, int); 1812 int pf_addr_cmp(struct pf_addr *, struct pf_addr *, 1813 sa_family_t); 1814 void pf_qid2qname(u_int32_t, char *); 1815 1816 VNET_DECLARE(struct pf_kstatus, pf_status); 1817 #define V_pf_status VNET(pf_status) 1818 1819 struct pf_limit { 1820 uma_zone_t zone; 1821 u_int limit; 1822 }; 1823 VNET_DECLARE(struct pf_limit, pf_limits[PF_LIMIT_MAX]); 1824 #define V_pf_limits VNET(pf_limits) 1825 1826 #endif /* _KERNEL */ 1827 1828 #ifdef _KERNEL 1829 VNET_DECLARE(struct pf_kanchor_global, pf_anchors); 1830 #define V_pf_anchors VNET(pf_anchors) 1831 VNET_DECLARE(struct pf_kanchor, pf_main_anchor); 1832 #define V_pf_main_anchor VNET(pf_main_anchor) 1833 #define pf_main_ruleset V_pf_main_anchor.ruleset 1834 1835 void pf_init_kruleset(struct pf_kruleset *); 1836 int pf_kanchor_setup(struct pf_krule *, 1837 const struct pf_kruleset *, const char *); 1838 int pf_kanchor_nvcopyout(const struct pf_kruleset *, 1839 const struct pf_krule *, nvlist_t *); 1840 int pf_kanchor_copyout(const struct pf_kruleset *, 1841 const struct pf_krule *, struct pfioc_rule *); 1842 void pf_kanchor_remove(struct pf_krule *); 1843 void pf_remove_if_empty_kruleset(struct pf_kruleset *); 1844 struct pf_kruleset *pf_find_kruleset(const char *); 1845 struct pf_kruleset *pf_find_or_create_kruleset(const char *); 1846 void pf_rs_initialize(void); 1847 1848 void pf_krule_free(struct pf_krule *); 1849 #endif 1850 1851 /* The fingerprint functions can be linked into userland programs (tcpdump) */ 1852 int pf_osfp_add(struct pf_osfp_ioctl *); 1853 #ifdef _KERNEL 1854 struct pf_osfp_enlist * 1855 pf_osfp_fingerprint(struct pf_pdesc *, struct mbuf *, int, 1856 const struct tcphdr *); 1857 #endif /* _KERNEL */ 1858 void pf_osfp_flush(void); 1859 int pf_osfp_get(struct pf_osfp_ioctl *); 1860 int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t); 1861 1862 #ifdef _KERNEL 1863 void pf_print_host(struct pf_addr *, u_int16_t, u_int8_t); 1864 1865 void pf_step_into_anchor(struct pf_kanchor_stackframe *, int *, 1866 struct pf_kruleset **, int, struct pf_krule **, 1867 struct pf_krule **, int *); 1868 int pf_step_out_of_anchor(struct pf_kanchor_stackframe *, int *, 1869 struct pf_kruleset **, int, struct pf_krule **, 1870 struct pf_krule **, int *); 1871 1872 int pf_map_addr(u_int8_t, struct pf_krule *, 1873 struct pf_addr *, struct pf_addr *, 1874 struct pf_addr *, struct pf_ksrc_node **); 1875 struct pf_krule *pf_get_translation(struct pf_pdesc *, struct mbuf *, 1876 int, int, struct pfi_kkif *, struct pf_ksrc_node **, 1877 struct pf_state_key **, struct pf_state_key **, 1878 struct pf_addr *, struct pf_addr *, 1879 uint16_t, uint16_t, struct pf_kanchor_stackframe *); 1880 1881 struct pf_state_key *pf_state_key_setup(struct pf_pdesc *, struct pf_addr *, 1882 struct pf_addr *, u_int16_t, u_int16_t); 1883 struct pf_state_key *pf_state_key_clone(struct pf_state_key *); 1884 1885 struct pfi_kkif *pf_kkif_create(int); 1886 void pf_kkif_free(struct pfi_kkif *); 1887 void pf_kkif_zero(struct pfi_kkif *); 1888 #endif /* _KERNEL */ 1889 1890 #endif /* _NET_PFVAR_H_ */ 1891