pfvar.h revision 284579
1/* 2 * Copyright (c) 2001 Daniel Hartmeier 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 9 * - Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * - Redistributions in binary form must reproduce the above 12 * copyright notice, this list of conditions and the following 13 * disclaimer in the documentation and/or other materials provided 14 * with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 19 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 20 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 22 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 24 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 26 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 27 * POSSIBILITY OF SUCH DAMAGE. 28 * 29 * $OpenBSD: pfvar.h,v 1.282 2009/01/29 15:12:28 pyr Exp $ 30 * $FreeBSD: stable/10/sys/net/pfvar.h 284579 2015-06-18 21:21:52Z kp $ 31 */ 32 33#ifndef _NET_PFVAR_H_ 34#define _NET_PFVAR_H_ 35 36#include <sys/param.h> 37#include <sys/queue.h> 38#include <sys/counter.h> 39#include <sys/refcount.h> 40#include <sys/tree.h> 41 42#include <net/radix.h> 43#include <netinet/in.h> 44 45#include <netpfil/pf/pf.h> 46#include <netpfil/pf/pf_altq.h> 47#include <netpfil/pf/pf_mtag.h> 48 49struct pf_addr { 50 union { 51 struct in_addr v4; 52 struct in6_addr v6; 53 u_int8_t addr8[16]; 54 u_int16_t addr16[8]; 55 u_int32_t addr32[4]; 56 } pfa; /* 128-bit address */ 57#define v4 pfa.v4 58#define v6 pfa.v6 59#define addr8 pfa.addr8 60#define addr16 pfa.addr16 61#define addr32 pfa.addr32 62}; 63 64#define PFI_AFLAG_NETWORK 0x01 65#define PFI_AFLAG_BROADCAST 0x02 66#define PFI_AFLAG_PEER 0x04 67#define PFI_AFLAG_MODEMASK 0x07 68#define PFI_AFLAG_NOALIAS 0x08 69 70struct pf_addr_wrap { 71 union { 72 struct { 73 struct pf_addr addr; 74 struct pf_addr mask; 75 } a; 76 char ifname[IFNAMSIZ]; 77 char tblname[PF_TABLE_NAME_SIZE]; 78 } v; 79 union { 80 struct pfi_dynaddr *dyn; 81 struct pfr_ktable *tbl; 82 int dyncnt; 83 int tblcnt; 84 } p; 85 u_int8_t type; /* PF_ADDR_* */ 86 u_int8_t iflags; /* PFI_AFLAG_* */ 87}; 88 89#ifdef _KERNEL 90 91struct pfi_dynaddr { 92 TAILQ_ENTRY(pfi_dynaddr) entry; 93 struct pf_addr pfid_addr4; 94 struct pf_addr pfid_mask4; 95 struct pf_addr pfid_addr6; 96 struct pf_addr pfid_mask6; 97 struct pfr_ktable *pfid_kt; 98 struct pfi_kif *pfid_kif; 99 int pfid_net; /* mask or 128 */ 100 int pfid_acnt4; /* address count IPv4 */ 101 int pfid_acnt6; /* address count IPv6 */ 102 sa_family_t pfid_af; /* rule af */ 103 u_int8_t pfid_iflags; /* PFI_AFLAG_* */ 104}; 105 106/* 107 * Address manipulation macros 108 */ 109#define HTONL(x) (x) = htonl((__uint32_t)(x)) 110#define HTONS(x) (x) = htons((__uint16_t)(x)) 111#define NTOHL(x) (x) = ntohl((__uint32_t)(x)) 112#define NTOHS(x) (x) = ntohs((__uint16_t)(x)) 113 114#define PF_NAME "pf" 115 116#define PF_HASHROW_ASSERT(h) mtx_assert(&(h)->lock, MA_OWNED) 117#define PF_HASHROW_LOCK(h) mtx_lock(&(h)->lock) 118#define PF_HASHROW_UNLOCK(h) mtx_unlock(&(h)->lock) 119 120#define PF_STATE_LOCK(s) \ 121 do { \ 122 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(s)]; \ 123 PF_HASHROW_LOCK(_ih); \ 124 } while (0) 125 126#define PF_STATE_UNLOCK(s) \ 127 do { \ 128 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH((s))]; \ 129 PF_HASHROW_UNLOCK(_ih); \ 130 } while (0) 131 132#ifdef INVARIANTS 133#define PF_STATE_LOCK_ASSERT(s) \ 134 do { \ 135 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(s)]; \ 136 PF_HASHROW_ASSERT(_ih); \ 137 } while (0) 138#else /* !INVARIANTS */ 139#define PF_STATE_LOCK_ASSERT(s) do {} while (0) 140#endif /* INVARIANTS */ 141 142extern struct mtx pf_unlnkdrules_mtx; 143#define PF_UNLNKDRULES_LOCK() mtx_lock(&pf_unlnkdrules_mtx) 144#define PF_UNLNKDRULES_UNLOCK() mtx_unlock(&pf_unlnkdrules_mtx) 145 146extern struct rwlock pf_rules_lock; 147#define PF_RULES_RLOCK() rw_rlock(&pf_rules_lock) 148#define PF_RULES_RUNLOCK() rw_runlock(&pf_rules_lock) 149#define PF_RULES_WLOCK() rw_wlock(&pf_rules_lock) 150#define PF_RULES_WUNLOCK() rw_wunlock(&pf_rules_lock) 151#define PF_RULES_ASSERT() rw_assert(&pf_rules_lock, RA_LOCKED) 152#define PF_RULES_RASSERT() rw_assert(&pf_rules_lock, RA_RLOCKED) 153#define PF_RULES_WASSERT() rw_assert(&pf_rules_lock, RA_WLOCKED) 154 155#define PF_MODVER 1 156#define PFLOG_MODVER 1 157#define PFSYNC_MODVER 1 158 159#define PFLOG_MINVER 1 160#define PFLOG_PREFVER PFLOG_MODVER 161#define PFLOG_MAXVER 1 162#define PFSYNC_MINVER 1 163#define PFSYNC_PREFVER PFSYNC_MODVER 164#define PFSYNC_MAXVER 1 165 166#ifdef INET 167#ifndef INET6 168#define PF_INET_ONLY 169#endif /* ! INET6 */ 170#endif /* INET */ 171 172#ifdef INET6 173#ifndef INET 174#define PF_INET6_ONLY 175#endif /* ! INET */ 176#endif /* INET6 */ 177 178#ifdef INET 179#ifdef INET6 180#define PF_INET_INET6 181#endif /* INET6 */ 182#endif /* INET */ 183 184#else 185 186#define PF_INET_INET6 187 188#endif /* _KERNEL */ 189 190/* Both IPv4 and IPv6 */ 191#ifdef PF_INET_INET6 192 193#define PF_AEQ(a, b, c) \ 194 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \ 195 (c == AF_INET6 && (a)->addr32[3] == (b)->addr32[3] && \ 196 (a)->addr32[2] == (b)->addr32[2] && \ 197 (a)->addr32[1] == (b)->addr32[1] && \ 198 (a)->addr32[0] == (b)->addr32[0])) \ 199 200#define PF_ANEQ(a, b, c) \ 201 ((a)->addr32[0] != (b)->addr32[0] || \ 202 (a)->addr32[1] != (b)->addr32[1] || \ 203 (a)->addr32[2] != (b)->addr32[2] || \ 204 (a)->addr32[3] != (b)->addr32[3]) \ 205 206#define PF_AZERO(a, c) \ 207 ((c == AF_INET && !(a)->addr32[0]) || \ 208 (c == AF_INET6 && !(a)->addr32[0] && !(a)->addr32[1] && \ 209 !(a)->addr32[2] && !(a)->addr32[3] )) \ 210 211#define PF_MATCHA(n, a, m, b, f) \ 212 pf_match_addr(n, a, m, b, f) 213 214#define PF_ACPY(a, b, f) \ 215 pf_addrcpy(a, b, f) 216 217#define PF_AINC(a, f) \ 218 pf_addr_inc(a, f) 219 220#define PF_POOLMASK(a, b, c, d, f) \ 221 pf_poolmask(a, b, c, d, f) 222 223#else 224 225/* Just IPv6 */ 226 227#ifdef PF_INET6_ONLY 228 229#define PF_AEQ(a, b, c) \ 230 ((a)->addr32[3] == (b)->addr32[3] && \ 231 (a)->addr32[2] == (b)->addr32[2] && \ 232 (a)->addr32[1] == (b)->addr32[1] && \ 233 (a)->addr32[0] == (b)->addr32[0]) \ 234 235#define PF_ANEQ(a, b, c) \ 236 ((a)->addr32[3] != (b)->addr32[3] || \ 237 (a)->addr32[2] != (b)->addr32[2] || \ 238 (a)->addr32[1] != (b)->addr32[1] || \ 239 (a)->addr32[0] != (b)->addr32[0]) \ 240 241#define PF_AZERO(a, c) \ 242 (!(a)->addr32[0] && \ 243 !(a)->addr32[1] && \ 244 !(a)->addr32[2] && \ 245 !(a)->addr32[3] ) \ 246 247#define PF_MATCHA(n, a, m, b, f) \ 248 pf_match_addr(n, a, m, b, f) 249 250#define PF_ACPY(a, b, f) \ 251 pf_addrcpy(a, b, f) 252 253#define PF_AINC(a, f) \ 254 pf_addr_inc(a, f) 255 256#define PF_POOLMASK(a, b, c, d, f) \ 257 pf_poolmask(a, b, c, d, f) 258 259#else 260 261/* Just IPv4 */ 262#ifdef PF_INET_ONLY 263 264#define PF_AEQ(a, b, c) \ 265 ((a)->addr32[0] == (b)->addr32[0]) 266 267#define PF_ANEQ(a, b, c) \ 268 ((a)->addr32[0] != (b)->addr32[0]) 269 270#define PF_AZERO(a, c) \ 271 (!(a)->addr32[0]) 272 273#define PF_MATCHA(n, a, m, b, f) \ 274 pf_match_addr(n, a, m, b, f) 275 276#define PF_ACPY(a, b, f) \ 277 (a)->v4.s_addr = (b)->v4.s_addr 278 279#define PF_AINC(a, f) \ 280 do { \ 281 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \ 282 } while (0) 283 284#define PF_POOLMASK(a, b, c, d, f) \ 285 do { \ 286 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \ 287 (((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \ 288 } while (0) 289 290#endif /* PF_INET_ONLY */ 291#endif /* PF_INET6_ONLY */ 292#endif /* PF_INET_INET6 */ 293 294/* 295 * XXX callers not FIB-aware in our version of pf yet. 296 * OpenBSD fixed it later it seems, 2010/05/07 13:33:16 claudio. 297 */ 298#define PF_MISMATCHAW(aw, x, af, neg, ifp, rtid) \ 299 ( \ 300 (((aw)->type == PF_ADDR_NOROUTE && \ 301 pf_routable((x), (af), NULL, (rtid))) || \ 302 (((aw)->type == PF_ADDR_URPFFAILED && (ifp) != NULL && \ 303 pf_routable((x), (af), (ifp), (rtid))) || \ 304 ((aw)->type == PF_ADDR_TABLE && \ 305 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \ 306 ((aw)->type == PF_ADDR_DYNIFTL && \ 307 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \ 308 ((aw)->type == PF_ADDR_RANGE && \ 309 !pf_match_addr_range(&(aw)->v.a.addr, \ 310 &(aw)->v.a.mask, (x), (af))) || \ 311 ((aw)->type == PF_ADDR_ADDRMASK && \ 312 !PF_AZERO(&(aw)->v.a.mask, (af)) && \ 313 !PF_MATCHA(0, &(aw)->v.a.addr, \ 314 &(aw)->v.a.mask, (x), (af))))) != \ 315 (neg) \ 316 ) 317 318 319struct pf_rule_uid { 320 uid_t uid[2]; 321 u_int8_t op; 322}; 323 324struct pf_rule_gid { 325 uid_t gid[2]; 326 u_int8_t op; 327}; 328 329struct pf_rule_addr { 330 struct pf_addr_wrap addr; 331 u_int16_t port[2]; 332 u_int8_t neg; 333 u_int8_t port_op; 334}; 335 336struct pf_pooladdr { 337 struct pf_addr_wrap addr; 338 TAILQ_ENTRY(pf_pooladdr) entries; 339 char ifname[IFNAMSIZ]; 340 struct pfi_kif *kif; 341}; 342 343TAILQ_HEAD(pf_palist, pf_pooladdr); 344 345struct pf_poolhashkey { 346 union { 347 u_int8_t key8[16]; 348 u_int16_t key16[8]; 349 u_int32_t key32[4]; 350 } pfk; /* 128-bit hash key */ 351#define key8 pfk.key8 352#define key16 pfk.key16 353#define key32 pfk.key32 354}; 355 356struct pf_pool { 357 struct pf_palist list; 358 struct pf_pooladdr *cur; 359 struct pf_poolhashkey key; 360 struct pf_addr counter; 361 int tblidx; 362 u_int16_t proxy_port[2]; 363 u_int8_t opts; 364}; 365 366 367/* A packed Operating System description for fingerprinting */ 368typedef u_int32_t pf_osfp_t; 369#define PF_OSFP_ANY ((pf_osfp_t)0) 370#define PF_OSFP_UNKNOWN ((pf_osfp_t)-1) 371#define PF_OSFP_NOMATCH ((pf_osfp_t)-2) 372 373struct pf_osfp_entry { 374 SLIST_ENTRY(pf_osfp_entry) fp_entry; 375 pf_osfp_t fp_os; 376 int fp_enflags; 377#define PF_OSFP_EXPANDED 0x001 /* expanded entry */ 378#define PF_OSFP_GENERIC 0x002 /* generic signature */ 379#define PF_OSFP_NODETAIL 0x004 /* no p0f details */ 380#define PF_OSFP_LEN 32 381 char fp_class_nm[PF_OSFP_LEN]; 382 char fp_version_nm[PF_OSFP_LEN]; 383 char fp_subtype_nm[PF_OSFP_LEN]; 384}; 385#define PF_OSFP_ENTRY_EQ(a, b) \ 386 ((a)->fp_os == (b)->fp_os && \ 387 memcmp((a)->fp_class_nm, (b)->fp_class_nm, PF_OSFP_LEN) == 0 && \ 388 memcmp((a)->fp_version_nm, (b)->fp_version_nm, PF_OSFP_LEN) == 0 && \ 389 memcmp((a)->fp_subtype_nm, (b)->fp_subtype_nm, PF_OSFP_LEN) == 0) 390 391/* handle pf_osfp_t packing */ 392#define _FP_RESERVED_BIT 1 /* For the special negative #defines */ 393#define _FP_UNUSED_BITS 1 394#define _FP_CLASS_BITS 10 /* OS Class (Windows, Linux) */ 395#define _FP_VERSION_BITS 10 /* OS version (95, 98, NT, 2.4.54, 3.2) */ 396#define _FP_SUBTYPE_BITS 10 /* patch level (NT SP4, SP3, ECN patch) */ 397#define PF_OSFP_UNPACK(osfp, class, version, subtype) do { \ 398 (class) = ((osfp) >> (_FP_VERSION_BITS+_FP_SUBTYPE_BITS)) & \ 399 ((1 << _FP_CLASS_BITS) - 1); \ 400 (version) = ((osfp) >> _FP_SUBTYPE_BITS) & \ 401 ((1 << _FP_VERSION_BITS) - 1);\ 402 (subtype) = (osfp) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 403} while(0) 404#define PF_OSFP_PACK(osfp, class, version, subtype) do { \ 405 (osfp) = ((class) & ((1 << _FP_CLASS_BITS) - 1)) << (_FP_VERSION_BITS \ 406 + _FP_SUBTYPE_BITS); \ 407 (osfp) |= ((version) & ((1 << _FP_VERSION_BITS) - 1)) << \ 408 _FP_SUBTYPE_BITS; \ 409 (osfp) |= (subtype) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 410} while(0) 411 412/* the fingerprint of an OSes TCP SYN packet */ 413typedef u_int64_t pf_tcpopts_t; 414struct pf_os_fingerprint { 415 SLIST_HEAD(pf_osfp_enlist, pf_osfp_entry) fp_oses; /* list of matches */ 416 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 417 u_int16_t fp_wsize; /* TCP window size */ 418 u_int16_t fp_psize; /* ip->ip_len */ 419 u_int16_t fp_mss; /* TCP MSS */ 420 u_int16_t fp_flags; 421#define PF_OSFP_WSIZE_MOD 0x0001 /* Window modulus */ 422#define PF_OSFP_WSIZE_DC 0x0002 /* Window don't care */ 423#define PF_OSFP_WSIZE_MSS 0x0004 /* Window multiple of MSS */ 424#define PF_OSFP_WSIZE_MTU 0x0008 /* Window multiple of MTU */ 425#define PF_OSFP_PSIZE_MOD 0x0010 /* packet size modulus */ 426#define PF_OSFP_PSIZE_DC 0x0020 /* packet size don't care */ 427#define PF_OSFP_WSCALE 0x0040 /* TCP window scaling */ 428#define PF_OSFP_WSCALE_MOD 0x0080 /* TCP window scale modulus */ 429#define PF_OSFP_WSCALE_DC 0x0100 /* TCP window scale dont-care */ 430#define PF_OSFP_MSS 0x0200 /* TCP MSS */ 431#define PF_OSFP_MSS_MOD 0x0400 /* TCP MSS modulus */ 432#define PF_OSFP_MSS_DC 0x0800 /* TCP MSS dont-care */ 433#define PF_OSFP_DF 0x1000 /* IPv4 don't fragment bit */ 434#define PF_OSFP_TS0 0x2000 /* Zero timestamp */ 435#define PF_OSFP_INET6 0x4000 /* IPv6 */ 436 u_int8_t fp_optcnt; /* TCP option count */ 437 u_int8_t fp_wscale; /* TCP window scaling */ 438 u_int8_t fp_ttl; /* IPv4 TTL */ 439#define PF_OSFP_MAXTTL_OFFSET 40 440/* TCP options packing */ 441#define PF_OSFP_TCPOPT_NOP 0x0 /* TCP NOP option */ 442#define PF_OSFP_TCPOPT_WSCALE 0x1 /* TCP window scaling option */ 443#define PF_OSFP_TCPOPT_MSS 0x2 /* TCP max segment size opt */ 444#define PF_OSFP_TCPOPT_SACK 0x3 /* TCP SACK OK option */ 445#define PF_OSFP_TCPOPT_TS 0x4 /* TCP timestamp option */ 446#define PF_OSFP_TCPOPT_BITS 3 /* bits used by each option */ 447#define PF_OSFP_MAX_OPTS \ 448 (sizeof(((struct pf_os_fingerprint *)0)->fp_tcpopts) * 8) \ 449 / PF_OSFP_TCPOPT_BITS 450 451 SLIST_ENTRY(pf_os_fingerprint) fp_next; 452}; 453 454struct pf_osfp_ioctl { 455 struct pf_osfp_entry fp_os; 456 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 457 u_int16_t fp_wsize; /* TCP window size */ 458 u_int16_t fp_psize; /* ip->ip_len */ 459 u_int16_t fp_mss; /* TCP MSS */ 460 u_int16_t fp_flags; 461 u_int8_t fp_optcnt; /* TCP option count */ 462 u_int8_t fp_wscale; /* TCP window scaling */ 463 u_int8_t fp_ttl; /* IPv4 TTL */ 464 465 int fp_getnum; /* DIOCOSFPGET number */ 466}; 467 468 469union pf_rule_ptr { 470 struct pf_rule *ptr; 471 u_int32_t nr; 472}; 473 474#define PF_ANCHOR_NAME_SIZE 64 475 476struct pf_rule { 477 struct pf_rule_addr src; 478 struct pf_rule_addr dst; 479#define PF_SKIP_IFP 0 480#define PF_SKIP_DIR 1 481#define PF_SKIP_AF 2 482#define PF_SKIP_PROTO 3 483#define PF_SKIP_SRC_ADDR 4 484#define PF_SKIP_SRC_PORT 5 485#define PF_SKIP_DST_ADDR 6 486#define PF_SKIP_DST_PORT 7 487#define PF_SKIP_COUNT 8 488 union pf_rule_ptr skip[PF_SKIP_COUNT]; 489#define PF_RULE_LABEL_SIZE 64 490 char label[PF_RULE_LABEL_SIZE]; 491 char ifname[IFNAMSIZ]; 492 char qname[PF_QNAME_SIZE]; 493 char pqname[PF_QNAME_SIZE]; 494#define PF_TAG_NAME_SIZE 64 495 char tagname[PF_TAG_NAME_SIZE]; 496 char match_tagname[PF_TAG_NAME_SIZE]; 497 498 char overload_tblname[PF_TABLE_NAME_SIZE]; 499 500 TAILQ_ENTRY(pf_rule) entries; 501 struct pf_pool rpool; 502 503 u_int64_t evaluations; 504 u_int64_t packets[2]; 505 u_int64_t bytes[2]; 506 507 struct pfi_kif *kif; 508 struct pf_anchor *anchor; 509 struct pfr_ktable *overload_tbl; 510 511 pf_osfp_t os_fingerprint; 512 513 int rtableid; 514 u_int32_t timeout[PFTM_MAX]; 515 u_int32_t max_states; 516 u_int32_t max_src_nodes; 517 u_int32_t max_src_states; 518 u_int32_t max_src_conn; 519 struct { 520 u_int32_t limit; 521 u_int32_t seconds; 522 } max_src_conn_rate; 523 u_int32_t qid; 524 u_int32_t pqid; 525 u_int32_t rt_listid; 526 u_int32_t nr; 527 u_int32_t prob; 528 uid_t cuid; 529 pid_t cpid; 530 531 counter_u64_t states_cur; 532 counter_u64_t states_tot; 533 counter_u64_t src_nodes; 534 535 u_int16_t return_icmp; 536 u_int16_t return_icmp6; 537 u_int16_t max_mss; 538 u_int16_t tag; 539 u_int16_t match_tag; 540 u_int16_t spare2; /* netgraph */ 541 542 struct pf_rule_uid uid; 543 struct pf_rule_gid gid; 544 545 u_int32_t rule_flag; 546 u_int8_t action; 547 u_int8_t direction; 548 u_int8_t log; 549 u_int8_t logif; 550 u_int8_t quick; 551 u_int8_t ifnot; 552 u_int8_t match_tag_not; 553 u_int8_t natpass; 554 555#define PF_STATE_NORMAL 0x1 556#define PF_STATE_MODULATE 0x2 557#define PF_STATE_SYNPROXY 0x3 558 u_int8_t keep_state; 559 sa_family_t af; 560 u_int8_t proto; 561 u_int8_t type; 562 u_int8_t code; 563 u_int8_t flags; 564 u_int8_t flagset; 565 u_int8_t min_ttl; 566 u_int8_t allow_opts; 567 u_int8_t rt; 568 u_int8_t return_ttl; 569 u_int8_t tos; 570 u_int8_t set_tos; 571 u_int8_t anchor_relative; 572 u_int8_t anchor_wildcard; 573 574#define PF_FLUSH 0x01 575#define PF_FLUSH_GLOBAL 0x02 576 u_int8_t flush; 577 578 struct { 579 struct pf_addr addr; 580 u_int16_t port; 581 } divert; 582 583 uint64_t u_states_cur; 584 uint64_t u_states_tot; 585 uint64_t u_src_nodes; 586}; 587 588/* rule flags */ 589#define PFRULE_DROP 0x0000 590#define PFRULE_RETURNRST 0x0001 591#define PFRULE_FRAGMENT 0x0002 592#define PFRULE_RETURNICMP 0x0004 593#define PFRULE_RETURN 0x0008 594#define PFRULE_NOSYNC 0x0010 595#define PFRULE_SRCTRACK 0x0020 /* track source states */ 596#define PFRULE_RULESRCTRACK 0x0040 /* per rule */ 597#define PFRULE_REFS 0x0080 /* rule has references */ 598 599/* scrub flags */ 600#define PFRULE_NODF 0x0100 601#define PFRULE_FRAGCROP 0x0200 /* non-buffering frag cache */ 602#define PFRULE_FRAGDROP 0x0400 /* drop funny fragments */ 603#define PFRULE_RANDOMID 0x0800 604#define PFRULE_REASSEMBLE_TCP 0x1000 605#define PFRULE_SET_TOS 0x2000 606 607/* rule flags again */ 608#define PFRULE_IFBOUND 0x00010000 /* if-bound */ 609#define PFRULE_STATESLOPPY 0x00020000 /* sloppy state tracking */ 610 611#define PFSTATE_HIWAT 10000 /* default state table size */ 612#define PFSTATE_ADAPT_START 6000 /* default adaptive timeout start */ 613#define PFSTATE_ADAPT_END 12000 /* default adaptive timeout end */ 614 615 616struct pf_threshold { 617 u_int32_t limit; 618#define PF_THRESHOLD_MULT 1000 619#define PF_THRESHOLD_MAX 0xffffffff / PF_THRESHOLD_MULT 620 u_int32_t seconds; 621 u_int32_t count; 622 u_int32_t last; 623}; 624 625struct pf_src_node { 626 LIST_ENTRY(pf_src_node) entry; 627 struct pf_addr addr; 628 struct pf_addr raddr; 629 union pf_rule_ptr rule; 630 struct pfi_kif *kif; 631 u_int64_t bytes[2]; 632 u_int64_t packets[2]; 633 u_int32_t states; 634 u_int32_t conn; 635 struct pf_threshold conn_rate; 636 u_int32_t creation; 637 u_int32_t expire; 638 sa_family_t af; 639 u_int8_t ruletype; 640}; 641 642#define PFSNODE_HIWAT 10000 /* default source node table size */ 643 644struct pf_state_scrub { 645 struct timeval pfss_last; /* time received last packet */ 646 u_int32_t pfss_tsecr; /* last echoed timestamp */ 647 u_int32_t pfss_tsval; /* largest timestamp */ 648 u_int32_t pfss_tsval0; /* original timestamp */ 649 u_int16_t pfss_flags; 650#define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */ 651#define PFSS_PAWS 0x0010 /* stricter PAWS checks */ 652#define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */ 653#define PFSS_DATA_TS 0x0040 /* timestamp on data packets */ 654#define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */ 655 u_int8_t pfss_ttl; /* stashed TTL */ 656 u_int8_t pad; 657 u_int32_t pfss_ts_mod; /* timestamp modulation */ 658}; 659 660struct pf_state_host { 661 struct pf_addr addr; 662 u_int16_t port; 663 u_int16_t pad; 664}; 665 666struct pf_state_peer { 667 struct pf_state_scrub *scrub; /* state is scrubbed */ 668 u_int32_t seqlo; /* Max sequence number sent */ 669 u_int32_t seqhi; /* Max the other end ACKd + win */ 670 u_int32_t seqdiff; /* Sequence number modulator */ 671 u_int16_t max_win; /* largest window (pre scaling) */ 672 u_int16_t mss; /* Maximum segment size option */ 673 u_int8_t state; /* active state level */ 674 u_int8_t wscale; /* window scaling factor */ 675 u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */ 676 u_int8_t pad[1]; 677}; 678 679/* Keep synced with struct pf_state_key. */ 680struct pf_state_key_cmp { 681 struct pf_addr addr[2]; 682 u_int16_t port[2]; 683 sa_family_t af; 684 u_int8_t proto; 685 u_int8_t pad[2]; 686}; 687 688struct pf_state_key { 689 struct pf_addr addr[2]; 690 u_int16_t port[2]; 691 sa_family_t af; 692 u_int8_t proto; 693 u_int8_t pad[2]; 694 695 LIST_ENTRY(pf_state_key) entry; 696 TAILQ_HEAD(, pf_state) states[2]; 697}; 698 699/* Keep synced with struct pf_state. */ 700struct pf_state_cmp { 701 u_int64_t id; 702 u_int32_t creatorid; 703 u_int8_t direction; 704 u_int8_t pad[3]; 705}; 706 707struct pf_state { 708 u_int64_t id; 709 u_int32_t creatorid; 710 u_int8_t direction; 711 u_int8_t pad[3]; 712 713 u_int refs; 714 TAILQ_ENTRY(pf_state) sync_list; 715 TAILQ_ENTRY(pf_state) key_list[2]; 716 LIST_ENTRY(pf_state) entry; 717 struct pf_state_peer src; 718 struct pf_state_peer dst; 719 union pf_rule_ptr rule; 720 union pf_rule_ptr anchor; 721 union pf_rule_ptr nat_rule; 722 struct pf_addr rt_addr; 723 struct pf_state_key *key[2]; /* addresses stack and wire */ 724 struct pfi_kif *kif; 725 struct pfi_kif *rt_kif; 726 struct pf_src_node *src_node; 727 struct pf_src_node *nat_src_node; 728 u_int64_t packets[2]; 729 u_int64_t bytes[2]; 730 u_int32_t creation; 731 u_int32_t expire; 732 u_int32_t pfsync_time; 733 u_int16_t tag; 734 u_int8_t log; 735 u_int8_t state_flags; 736#define PFSTATE_ALLOWOPTS 0x01 737#define PFSTATE_SLOPPY 0x02 738/* was PFSTATE_PFLOW 0x04 */ 739#define PFSTATE_NOSYNC 0x08 740#define PFSTATE_ACK 0x10 741 u_int8_t timeout; 742 u_int8_t sync_state; /* PFSYNC_S_x */ 743 744 /* XXX */ 745 u_int8_t sync_updates; 746 u_int8_t _tail[3]; 747}; 748 749/* 750 * Unified state structures for pulling states out of the kernel 751 * used by pfsync(4) and the pf(4) ioctl. 752 */ 753struct pfsync_state_scrub { 754 u_int16_t pfss_flags; 755 u_int8_t pfss_ttl; /* stashed TTL */ 756#define PFSYNC_SCRUB_FLAG_VALID 0x01 757 u_int8_t scrub_flag; 758 u_int32_t pfss_ts_mod; /* timestamp modulation */ 759} __packed; 760 761struct pfsync_state_peer { 762 struct pfsync_state_scrub scrub; /* state is scrubbed */ 763 u_int32_t seqlo; /* Max sequence number sent */ 764 u_int32_t seqhi; /* Max the other end ACKd + win */ 765 u_int32_t seqdiff; /* Sequence number modulator */ 766 u_int16_t max_win; /* largest window (pre scaling) */ 767 u_int16_t mss; /* Maximum segment size option */ 768 u_int8_t state; /* active state level */ 769 u_int8_t wscale; /* window scaling factor */ 770 u_int8_t pad[6]; 771} __packed; 772 773struct pfsync_state_key { 774 struct pf_addr addr[2]; 775 u_int16_t port[2]; 776}; 777 778struct pfsync_state { 779 u_int64_t id; 780 char ifname[IFNAMSIZ]; 781 struct pfsync_state_key key[2]; 782 struct pfsync_state_peer src; 783 struct pfsync_state_peer dst; 784 struct pf_addr rt_addr; 785 u_int32_t rule; 786 u_int32_t anchor; 787 u_int32_t nat_rule; 788 u_int32_t creation; 789 u_int32_t expire; 790 u_int32_t packets[2][2]; 791 u_int32_t bytes[2][2]; 792 u_int32_t creatorid; 793 sa_family_t af; 794 u_int8_t proto; 795 u_int8_t direction; 796 u_int8_t __spare[2]; 797 u_int8_t log; 798 u_int8_t state_flags; 799 u_int8_t timeout; 800 u_int8_t sync_flags; 801 u_int8_t updates; 802} __packed; 803 804#ifdef _KERNEL 805/* pfsync */ 806typedef int pfsync_state_import_t(struct pfsync_state *, u_int8_t); 807typedef void pfsync_insert_state_t(struct pf_state *); 808typedef void pfsync_update_state_t(struct pf_state *); 809typedef void pfsync_delete_state_t(struct pf_state *); 810typedef void pfsync_clear_states_t(u_int32_t, const char *); 811typedef int pfsync_defer_t(struct pf_state *, struct mbuf *); 812 813extern pfsync_state_import_t *pfsync_state_import_ptr; 814extern pfsync_insert_state_t *pfsync_insert_state_ptr; 815extern pfsync_update_state_t *pfsync_update_state_ptr; 816extern pfsync_delete_state_t *pfsync_delete_state_ptr; 817extern pfsync_clear_states_t *pfsync_clear_states_ptr; 818extern pfsync_defer_t *pfsync_defer_ptr; 819 820void pfsync_state_export(struct pfsync_state *, 821 struct pf_state *); 822 823/* pflog */ 824struct pf_ruleset; 825struct pf_pdesc; 826typedef int pflog_packet_t(struct pfi_kif *, struct mbuf *, sa_family_t, 827 u_int8_t, u_int8_t, struct pf_rule *, struct pf_rule *, 828 struct pf_ruleset *, struct pf_pdesc *, int); 829extern pflog_packet_t *pflog_packet_ptr; 830 831#define V_pf_end_threads VNET(pf_end_threads) 832#endif /* _KERNEL */ 833 834#define PFSYNC_FLAG_SRCNODE 0x04 835#define PFSYNC_FLAG_NATSRCNODE 0x08 836 837/* for copies to/from network byte order */ 838/* ioctl interface also uses network byte order */ 839#define pf_state_peer_hton(s,d) do { \ 840 (d)->seqlo = htonl((s)->seqlo); \ 841 (d)->seqhi = htonl((s)->seqhi); \ 842 (d)->seqdiff = htonl((s)->seqdiff); \ 843 (d)->max_win = htons((s)->max_win); \ 844 (d)->mss = htons((s)->mss); \ 845 (d)->state = (s)->state; \ 846 (d)->wscale = (s)->wscale; \ 847 if ((s)->scrub) { \ 848 (d)->scrub.pfss_flags = \ 849 htons((s)->scrub->pfss_flags & PFSS_TIMESTAMP); \ 850 (d)->scrub.pfss_ttl = (s)->scrub->pfss_ttl; \ 851 (d)->scrub.pfss_ts_mod = htonl((s)->scrub->pfss_ts_mod);\ 852 (d)->scrub.scrub_flag = PFSYNC_SCRUB_FLAG_VALID; \ 853 } \ 854} while (0) 855 856#define pf_state_peer_ntoh(s,d) do { \ 857 (d)->seqlo = ntohl((s)->seqlo); \ 858 (d)->seqhi = ntohl((s)->seqhi); \ 859 (d)->seqdiff = ntohl((s)->seqdiff); \ 860 (d)->max_win = ntohs((s)->max_win); \ 861 (d)->mss = ntohs((s)->mss); \ 862 (d)->state = (s)->state; \ 863 (d)->wscale = (s)->wscale; \ 864 if ((s)->scrub.scrub_flag == PFSYNC_SCRUB_FLAG_VALID && \ 865 (d)->scrub != NULL) { \ 866 (d)->scrub->pfss_flags = \ 867 ntohs((s)->scrub.pfss_flags) & PFSS_TIMESTAMP; \ 868 (d)->scrub->pfss_ttl = (s)->scrub.pfss_ttl; \ 869 (d)->scrub->pfss_ts_mod = ntohl((s)->scrub.pfss_ts_mod);\ 870 } \ 871} while (0) 872 873#define pf_state_counter_hton(s,d) do { \ 874 d[0] = htonl((s>>32)&0xffffffff); \ 875 d[1] = htonl(s&0xffffffff); \ 876} while (0) 877 878#define pf_state_counter_from_pfsync(s) \ 879 (((u_int64_t)(s[0])<<32) | (u_int64_t)(s[1])) 880 881#define pf_state_counter_ntoh(s,d) do { \ 882 d = ntohl(s[0]); \ 883 d = d<<32; \ 884 d += ntohl(s[1]); \ 885} while (0) 886 887TAILQ_HEAD(pf_rulequeue, pf_rule); 888 889struct pf_anchor; 890 891struct pf_ruleset { 892 struct { 893 struct pf_rulequeue queues[2]; 894 struct { 895 struct pf_rulequeue *ptr; 896 struct pf_rule **ptr_array; 897 u_int32_t rcount; 898 u_int32_t ticket; 899 int open; 900 } active, inactive; 901 } rules[PF_RULESET_MAX]; 902 struct pf_anchor *anchor; 903 u_int32_t tticket; 904 int tables; 905 int topen; 906}; 907 908RB_HEAD(pf_anchor_global, pf_anchor); 909RB_HEAD(pf_anchor_node, pf_anchor); 910struct pf_anchor { 911 RB_ENTRY(pf_anchor) entry_global; 912 RB_ENTRY(pf_anchor) entry_node; 913 struct pf_anchor *parent; 914 struct pf_anchor_node children; 915 char name[PF_ANCHOR_NAME_SIZE]; 916 char path[MAXPATHLEN]; 917 struct pf_ruleset ruleset; 918 int refcnt; /* anchor rules */ 919 int match; /* XXX: used for pfctl black magic */ 920}; 921RB_PROTOTYPE(pf_anchor_global, pf_anchor, entry_global, pf_anchor_compare); 922RB_PROTOTYPE(pf_anchor_node, pf_anchor, entry_node, pf_anchor_compare); 923 924#define PF_RESERVED_ANCHOR "_pf" 925 926#define PFR_TFLAG_PERSIST 0x00000001 927#define PFR_TFLAG_CONST 0x00000002 928#define PFR_TFLAG_ACTIVE 0x00000004 929#define PFR_TFLAG_INACTIVE 0x00000008 930#define PFR_TFLAG_REFERENCED 0x00000010 931#define PFR_TFLAG_REFDANCHOR 0x00000020 932#define PFR_TFLAG_COUNTERS 0x00000040 933/* Adjust masks below when adding flags. */ 934#define PFR_TFLAG_USRMASK (PFR_TFLAG_PERSIST | \ 935 PFR_TFLAG_CONST | \ 936 PFR_TFLAG_COUNTERS) 937#define PFR_TFLAG_SETMASK (PFR_TFLAG_ACTIVE | \ 938 PFR_TFLAG_INACTIVE | \ 939 PFR_TFLAG_REFERENCED | \ 940 PFR_TFLAG_REFDANCHOR) 941#define PFR_TFLAG_ALLMASK (PFR_TFLAG_PERSIST | \ 942 PFR_TFLAG_CONST | \ 943 PFR_TFLAG_ACTIVE | \ 944 PFR_TFLAG_INACTIVE | \ 945 PFR_TFLAG_REFERENCED | \ 946 PFR_TFLAG_REFDANCHOR | \ 947 PFR_TFLAG_COUNTERS) 948 949struct pf_anchor_stackframe; 950 951struct pfr_table { 952 char pfrt_anchor[MAXPATHLEN]; 953 char pfrt_name[PF_TABLE_NAME_SIZE]; 954 u_int32_t pfrt_flags; 955 u_int8_t pfrt_fback; 956}; 957 958enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED, 959 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE, 960 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_NOCOUNT, PFR_FB_MAX }; 961 962struct pfr_addr { 963 union { 964 struct in_addr _pfra_ip4addr; 965 struct in6_addr _pfra_ip6addr; 966 } pfra_u; 967 u_int8_t pfra_af; 968 u_int8_t pfra_net; 969 u_int8_t pfra_not; 970 u_int8_t pfra_fback; 971}; 972#define pfra_ip4addr pfra_u._pfra_ip4addr 973#define pfra_ip6addr pfra_u._pfra_ip6addr 974 975enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX }; 976enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX }; 977#define PFR_OP_XPASS PFR_OP_ADDR_MAX 978 979struct pfr_astats { 980 struct pfr_addr pfras_a; 981 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 982 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 983 long pfras_tzero; 984}; 985 986enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX }; 987 988struct pfr_tstats { 989 struct pfr_table pfrts_t; 990 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 991 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 992 u_int64_t pfrts_match; 993 u_int64_t pfrts_nomatch; 994 long pfrts_tzero; 995 int pfrts_cnt; 996 int pfrts_refcnt[PFR_REFCNT_MAX]; 997}; 998#define pfrts_name pfrts_t.pfrt_name 999#define pfrts_flags pfrts_t.pfrt_flags 1000 1001#ifndef _SOCKADDR_UNION_DEFINED 1002#define _SOCKADDR_UNION_DEFINED 1003union sockaddr_union { 1004 struct sockaddr sa; 1005 struct sockaddr_in sin; 1006 struct sockaddr_in6 sin6; 1007}; 1008#endif /* _SOCKADDR_UNION_DEFINED */ 1009 1010struct pfr_kcounters { 1011 u_int64_t pfrkc_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1012 u_int64_t pfrkc_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1013}; 1014 1015SLIST_HEAD(pfr_kentryworkq, pfr_kentry); 1016struct pfr_kentry { 1017 struct radix_node pfrke_node[2]; 1018 union sockaddr_union pfrke_sa; 1019 SLIST_ENTRY(pfr_kentry) pfrke_workq; 1020 struct pfr_kcounters *pfrke_counters; 1021 long pfrke_tzero; 1022 u_int8_t pfrke_af; 1023 u_int8_t pfrke_net; 1024 u_int8_t pfrke_not; 1025 u_int8_t pfrke_mark; 1026}; 1027 1028SLIST_HEAD(pfr_ktableworkq, pfr_ktable); 1029RB_HEAD(pfr_ktablehead, pfr_ktable); 1030struct pfr_ktable { 1031 struct pfr_tstats pfrkt_ts; 1032 RB_ENTRY(pfr_ktable) pfrkt_tree; 1033 SLIST_ENTRY(pfr_ktable) pfrkt_workq; 1034 struct radix_node_head *pfrkt_ip4; 1035 struct radix_node_head *pfrkt_ip6; 1036 struct pfr_ktable *pfrkt_shadow; 1037 struct pfr_ktable *pfrkt_root; 1038 struct pf_ruleset *pfrkt_rs; 1039 long pfrkt_larg; 1040 int pfrkt_nflags; 1041}; 1042#define pfrkt_t pfrkt_ts.pfrts_t 1043#define pfrkt_name pfrkt_t.pfrt_name 1044#define pfrkt_anchor pfrkt_t.pfrt_anchor 1045#define pfrkt_ruleset pfrkt_t.pfrt_ruleset 1046#define pfrkt_flags pfrkt_t.pfrt_flags 1047#define pfrkt_cnt pfrkt_ts.pfrts_cnt 1048#define pfrkt_refcnt pfrkt_ts.pfrts_refcnt 1049#define pfrkt_packets pfrkt_ts.pfrts_packets 1050#define pfrkt_bytes pfrkt_ts.pfrts_bytes 1051#define pfrkt_match pfrkt_ts.pfrts_match 1052#define pfrkt_nomatch pfrkt_ts.pfrts_nomatch 1053#define pfrkt_tzero pfrkt_ts.pfrts_tzero 1054 1055/* keep synced with pfi_kif, used in RB_FIND */ 1056struct pfi_kif_cmp { 1057 char pfik_name[IFNAMSIZ]; 1058}; 1059 1060struct pfi_kif { 1061 char pfik_name[IFNAMSIZ]; 1062 union { 1063 RB_ENTRY(pfi_kif) _pfik_tree; 1064 LIST_ENTRY(pfi_kif) _pfik_list; 1065 } _pfik_glue; 1066#define pfik_tree _pfik_glue._pfik_tree 1067#define pfik_list _pfik_glue._pfik_list 1068 u_int64_t pfik_packets[2][2][2]; 1069 u_int64_t pfik_bytes[2][2][2]; 1070 u_int32_t pfik_tzero; 1071 u_int pfik_flags; 1072 struct ifnet *pfik_ifp; 1073 struct ifg_group *pfik_group; 1074 u_int pfik_rulerefs; 1075 TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs; 1076}; 1077 1078#define PFI_IFLAG_REFS 0x0001 /* has state references */ 1079#define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */ 1080 1081struct pf_pdesc { 1082 struct { 1083 int done; 1084 uid_t uid; 1085 gid_t gid; 1086 } lookup; 1087 u_int64_t tot_len; /* Make Mickey money */ 1088 union { 1089 struct tcphdr *tcp; 1090 struct udphdr *udp; 1091 struct icmp *icmp; 1092#ifdef INET6 1093 struct icmp6_hdr *icmp6; 1094#endif /* INET6 */ 1095 void *any; 1096 } hdr; 1097 1098 struct pf_rule *nat_rule; /* nat/rdr rule applied to packet */ 1099 struct pf_addr *src; /* src address */ 1100 struct pf_addr *dst; /* dst address */ 1101 u_int16_t *sport; 1102 u_int16_t *dport; 1103 struct pf_mtag *pf_mtag; 1104 1105 u_int32_t p_len; /* total length of payload */ 1106 1107 u_int16_t *ip_sum; 1108 u_int16_t *proto_sum; 1109 u_int16_t flags; /* Let SCRUB trigger behavior in 1110 * state code. Easier than tags */ 1111#define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */ 1112#define PFDESC_IP_REAS 0x0002 /* IP frags would've been reassembled */ 1113 sa_family_t af; 1114 u_int8_t proto; 1115 u_int8_t tos; 1116 u_int8_t dir; /* direction */ 1117 u_int8_t sidx; /* key index for source */ 1118 u_int8_t didx; /* key index for destination */ 1119}; 1120 1121/* flags for RDR options */ 1122#define PF_DPORT_RANGE 0x01 /* Dest port uses range */ 1123#define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */ 1124 1125/* UDP state enumeration */ 1126#define PFUDPS_NO_TRAFFIC 0 1127#define PFUDPS_SINGLE 1 1128#define PFUDPS_MULTIPLE 2 1129 1130#define PFUDPS_NSTATES 3 /* number of state levels */ 1131 1132#define PFUDPS_NAMES { \ 1133 "NO_TRAFFIC", \ 1134 "SINGLE", \ 1135 "MULTIPLE", \ 1136 NULL \ 1137} 1138 1139/* Other protocol state enumeration */ 1140#define PFOTHERS_NO_TRAFFIC 0 1141#define PFOTHERS_SINGLE 1 1142#define PFOTHERS_MULTIPLE 2 1143 1144#define PFOTHERS_NSTATES 3 /* number of state levels */ 1145 1146#define PFOTHERS_NAMES { \ 1147 "NO_TRAFFIC", \ 1148 "SINGLE", \ 1149 "MULTIPLE", \ 1150 NULL \ 1151} 1152 1153#define ACTION_SET(a, x) \ 1154 do { \ 1155 if ((a) != NULL) \ 1156 *(a) = (x); \ 1157 } while (0) 1158 1159#define REASON_SET(a, x) \ 1160 do { \ 1161 if ((a) != NULL) \ 1162 *(a) = (x); \ 1163 if (x < PFRES_MAX) \ 1164 counter_u64_add(V_pf_status.counters[x], 1); \ 1165 } while (0) 1166 1167struct pf_kstatus { 1168 counter_u64_t counters[PFRES_MAX]; /* reason for passing/dropping */ 1169 counter_u64_t lcounters[LCNT_MAX]; /* limit counters */ 1170 counter_u64_t fcounters[FCNT_MAX]; /* state operation counters */ 1171 counter_u64_t scounters[SCNT_MAX]; /* src_node operation counters */ 1172 uint32_t states; 1173 uint32_t src_nodes; 1174 uint32_t running; 1175 uint32_t since; 1176 uint32_t debug; 1177 uint32_t hostid; 1178 char ifname[IFNAMSIZ]; 1179 uint8_t pf_chksum[PF_MD5_DIGEST_LENGTH]; 1180}; 1181 1182struct pf_divert { 1183 union { 1184 struct in_addr ipv4; 1185 struct in6_addr ipv6; 1186 } addr; 1187 u_int16_t port; 1188}; 1189 1190#define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */ 1191#define PFR_KENTRY_HIWAT 200000 /* Number of table entries */ 1192 1193/* 1194 * ioctl parameter structures 1195 */ 1196 1197struct pfioc_pooladdr { 1198 u_int32_t action; 1199 u_int32_t ticket; 1200 u_int32_t nr; 1201 u_int32_t r_num; 1202 u_int8_t r_action; 1203 u_int8_t r_last; 1204 u_int8_t af; 1205 char anchor[MAXPATHLEN]; 1206 struct pf_pooladdr addr; 1207}; 1208 1209struct pfioc_rule { 1210 u_int32_t action; 1211 u_int32_t ticket; 1212 u_int32_t pool_ticket; 1213 u_int32_t nr; 1214 char anchor[MAXPATHLEN]; 1215 char anchor_call[MAXPATHLEN]; 1216 struct pf_rule rule; 1217}; 1218 1219struct pfioc_natlook { 1220 struct pf_addr saddr; 1221 struct pf_addr daddr; 1222 struct pf_addr rsaddr; 1223 struct pf_addr rdaddr; 1224 u_int16_t sport; 1225 u_int16_t dport; 1226 u_int16_t rsport; 1227 u_int16_t rdport; 1228 sa_family_t af; 1229 u_int8_t proto; 1230 u_int8_t direction; 1231}; 1232 1233struct pfioc_state { 1234 struct pfsync_state state; 1235}; 1236 1237struct pfioc_src_node_kill { 1238 sa_family_t psnk_af; 1239 struct pf_rule_addr psnk_src; 1240 struct pf_rule_addr psnk_dst; 1241 u_int psnk_killed; 1242}; 1243 1244struct pfioc_state_kill { 1245 struct pf_state_cmp psk_pfcmp; 1246 sa_family_t psk_af; 1247 int psk_proto; 1248 struct pf_rule_addr psk_src; 1249 struct pf_rule_addr psk_dst; 1250 char psk_ifname[IFNAMSIZ]; 1251 char psk_label[PF_RULE_LABEL_SIZE]; 1252 u_int psk_killed; 1253}; 1254 1255struct pfioc_states { 1256 int ps_len; 1257 union { 1258 caddr_t psu_buf; 1259 struct pfsync_state *psu_states; 1260 } ps_u; 1261#define ps_buf ps_u.psu_buf 1262#define ps_states ps_u.psu_states 1263}; 1264 1265struct pfioc_src_nodes { 1266 int psn_len; 1267 union { 1268 caddr_t psu_buf; 1269 struct pf_src_node *psu_src_nodes; 1270 } psn_u; 1271#define psn_buf psn_u.psu_buf 1272#define psn_src_nodes psn_u.psu_src_nodes 1273}; 1274 1275struct pfioc_if { 1276 char ifname[IFNAMSIZ]; 1277}; 1278 1279struct pfioc_tm { 1280 int timeout; 1281 int seconds; 1282}; 1283 1284struct pfioc_limit { 1285 int index; 1286 unsigned limit; 1287}; 1288 1289struct pfioc_altq { 1290 u_int32_t action; 1291 u_int32_t ticket; 1292 u_int32_t nr; 1293 struct pf_altq altq; 1294}; 1295 1296struct pfioc_qstats { 1297 u_int32_t ticket; 1298 u_int32_t nr; 1299 void *buf; 1300 int nbytes; 1301 u_int8_t scheduler; 1302}; 1303 1304struct pfioc_ruleset { 1305 u_int32_t nr; 1306 char path[MAXPATHLEN]; 1307 char name[PF_ANCHOR_NAME_SIZE]; 1308}; 1309 1310#define PF_RULESET_ALTQ (PF_RULESET_MAX) 1311#define PF_RULESET_TABLE (PF_RULESET_MAX+1) 1312struct pfioc_trans { 1313 int size; /* number of elements */ 1314 int esize; /* size of each element in bytes */ 1315 struct pfioc_trans_e { 1316 int rs_num; 1317 char anchor[MAXPATHLEN]; 1318 u_int32_t ticket; 1319 } *array; 1320}; 1321 1322#define PFR_FLAG_ATOMIC 0x00000001 /* unused */ 1323#define PFR_FLAG_DUMMY 0x00000002 1324#define PFR_FLAG_FEEDBACK 0x00000004 1325#define PFR_FLAG_CLSTATS 0x00000008 1326#define PFR_FLAG_ADDRSTOO 0x00000010 1327#define PFR_FLAG_REPLACE 0x00000020 1328#define PFR_FLAG_ALLRSETS 0x00000040 1329#define PFR_FLAG_ALLMASK 0x0000007F 1330#ifdef _KERNEL 1331#define PFR_FLAG_USERIOCTL 0x10000000 1332#endif 1333 1334struct pfioc_table { 1335 struct pfr_table pfrio_table; 1336 void *pfrio_buffer; 1337 int pfrio_esize; 1338 int pfrio_size; 1339 int pfrio_size2; 1340 int pfrio_nadd; 1341 int pfrio_ndel; 1342 int pfrio_nchange; 1343 int pfrio_flags; 1344 u_int32_t pfrio_ticket; 1345}; 1346#define pfrio_exists pfrio_nadd 1347#define pfrio_nzero pfrio_nadd 1348#define pfrio_nmatch pfrio_nadd 1349#define pfrio_naddr pfrio_size2 1350#define pfrio_setflag pfrio_size2 1351#define pfrio_clrflag pfrio_nadd 1352 1353struct pfioc_iface { 1354 char pfiio_name[IFNAMSIZ]; 1355 void *pfiio_buffer; 1356 int pfiio_esize; 1357 int pfiio_size; 1358 int pfiio_nzero; 1359 int pfiio_flags; 1360}; 1361 1362 1363/* 1364 * ioctl operations 1365 */ 1366 1367#define DIOCSTART _IO ('D', 1) 1368#define DIOCSTOP _IO ('D', 2) 1369#define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule) 1370#define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule) 1371#define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule) 1372/* XXX cut 8 - 17 */ 1373#define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill) 1374#define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state) 1375#define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if) 1376#define DIOCGETSTATUS _IOWR('D', 21, struct pf_status) 1377#define DIOCCLRSTATUS _IO ('D', 22) 1378#define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook) 1379#define DIOCSETDEBUG _IOWR('D', 24, u_int32_t) 1380#define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states) 1381#define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule) 1382/* XXX cut 26 - 28 */ 1383#define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm) 1384#define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm) 1385#define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state) 1386#define DIOCCLRRULECTRS _IO ('D', 38) 1387#define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit) 1388#define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit) 1389#define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill) 1390#define DIOCSTARTALTQ _IO ('D', 42) 1391#define DIOCSTOPALTQ _IO ('D', 43) 1392#define DIOCADDALTQ _IOWR('D', 45, struct pfioc_altq) 1393#define DIOCGETALTQS _IOWR('D', 47, struct pfioc_altq) 1394#define DIOCGETALTQ _IOWR('D', 48, struct pfioc_altq) 1395#define DIOCCHANGEALTQ _IOWR('D', 49, struct pfioc_altq) 1396#define DIOCGETQSTATS _IOWR('D', 50, struct pfioc_qstats) 1397#define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr) 1398#define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr) 1399#define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr) 1400#define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr) 1401#define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr) 1402/* XXX cut 55 - 57 */ 1403#define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset) 1404#define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset) 1405#define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table) 1406#define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table) 1407#define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table) 1408#define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table) 1409#define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table) 1410#define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table) 1411#define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table) 1412#define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table) 1413#define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table) 1414#define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table) 1415#define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table) 1416#define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table) 1417#define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table) 1418#define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table) 1419#define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table) 1420#define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table) 1421#define DIOCOSFPFLUSH _IO('D', 78) 1422#define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl) 1423#define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl) 1424#define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans) 1425#define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans) 1426#define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans) 1427#define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes) 1428#define DIOCCLRSRCNODES _IO('D', 85) 1429#define DIOCSETHOSTID _IOWR('D', 86, u_int32_t) 1430#define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface) 1431#define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface) 1432#define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface) 1433#define DIOCKILLSRCNODES _IOWR('D', 91, struct pfioc_src_node_kill) 1434struct pf_ifspeed { 1435 char ifname[IFNAMSIZ]; 1436 u_int32_t baudrate; 1437}; 1438#define DIOCGIFSPEED _IOWR('D', 92, struct pf_ifspeed) 1439 1440#ifdef _KERNEL 1441LIST_HEAD(pf_src_node_list, pf_src_node); 1442struct pf_srchash { 1443 struct pf_src_node_list nodes; 1444 struct mtx lock; 1445}; 1446 1447struct pf_keyhash { 1448 LIST_HEAD(, pf_state_key) keys; 1449 struct mtx lock; 1450}; 1451 1452struct pf_idhash { 1453 LIST_HEAD(, pf_state) states; 1454 struct mtx lock; 1455}; 1456 1457extern u_long pf_hashmask; 1458extern u_long pf_srchashmask; 1459#define PF_HASHSIZ (32768) 1460VNET_DECLARE(struct pf_keyhash *, pf_keyhash); 1461VNET_DECLARE(struct pf_idhash *, pf_idhash); 1462#define V_pf_keyhash VNET(pf_keyhash) 1463#define V_pf_idhash VNET(pf_idhash) 1464VNET_DECLARE(struct pf_srchash *, pf_srchash); 1465#define V_pf_srchash VNET(pf_srchash) 1466 1467#define PF_IDHASH(s) (be64toh((s)->id) % (pf_hashmask + 1)) 1468 1469VNET_DECLARE(void *, pf_swi_cookie); 1470#define V_pf_swi_cookie VNET(pf_swi_cookie) 1471 1472VNET_DECLARE(uint64_t, pf_stateid[MAXCPU]); 1473#define V_pf_stateid VNET(pf_stateid) 1474 1475TAILQ_HEAD(pf_altqqueue, pf_altq); 1476VNET_DECLARE(struct pf_altqqueue, pf_altqs[2]); 1477#define V_pf_altqs VNET(pf_altqs) 1478VNET_DECLARE(struct pf_palist, pf_pabuf); 1479#define V_pf_pabuf VNET(pf_pabuf) 1480 1481VNET_DECLARE(u_int32_t, ticket_altqs_active); 1482#define V_ticket_altqs_active VNET(ticket_altqs_active) 1483VNET_DECLARE(u_int32_t, ticket_altqs_inactive); 1484#define V_ticket_altqs_inactive VNET(ticket_altqs_inactive) 1485VNET_DECLARE(int, altqs_inactive_open); 1486#define V_altqs_inactive_open VNET(altqs_inactive_open) 1487VNET_DECLARE(u_int32_t, ticket_pabuf); 1488#define V_ticket_pabuf VNET(ticket_pabuf) 1489VNET_DECLARE(struct pf_altqqueue *, pf_altqs_active); 1490#define V_pf_altqs_active VNET(pf_altqs_active) 1491VNET_DECLARE(struct pf_altqqueue *, pf_altqs_inactive); 1492#define V_pf_altqs_inactive VNET(pf_altqs_inactive) 1493 1494VNET_DECLARE(struct pf_rulequeue, pf_unlinked_rules); 1495#define V_pf_unlinked_rules VNET(pf_unlinked_rules) 1496 1497void pf_initialize(void); 1498void pf_mtag_initialize(void); 1499void pf_mtag_cleanup(void); 1500void pf_cleanup(void); 1501 1502struct pf_mtag *pf_get_mtag(struct mbuf *); 1503 1504extern void pf_calc_skip_steps(struct pf_rulequeue *); 1505#ifdef ALTQ 1506extern void pf_altq_ifnet_event(struct ifnet *, int); 1507#endif 1508VNET_DECLARE(uma_zone_t, pf_state_z); 1509#define V_pf_state_z VNET(pf_state_z) 1510VNET_DECLARE(uma_zone_t, pf_state_key_z); 1511#define V_pf_state_key_z VNET(pf_state_key_z) 1512VNET_DECLARE(uma_zone_t, pf_state_scrub_z); 1513#define V_pf_state_scrub_z VNET(pf_state_scrub_z) 1514 1515extern void pf_purge_thread(void *); 1516extern void pf_intr(void *); 1517extern void pf_purge_expired_src_nodes(void); 1518 1519extern int pf_unlink_state(struct pf_state *, u_int); 1520#define PF_ENTER_LOCKED 0x00000001 1521#define PF_RETURN_LOCKED 0x00000002 1522extern int pf_state_insert(struct pfi_kif *, 1523 struct pf_state_key *, 1524 struct pf_state_key *, 1525 struct pf_state *); 1526extern void pf_free_state(struct pf_state *); 1527 1528static __inline void 1529pf_ref_state(struct pf_state *s) 1530{ 1531 1532 refcount_acquire(&s->refs); 1533} 1534 1535static __inline int 1536pf_release_state(struct pf_state *s) 1537{ 1538 1539 if (refcount_release(&s->refs)) { 1540 pf_free_state(s); 1541 return (1); 1542 } else 1543 return (0); 1544} 1545 1546extern struct pf_state *pf_find_state_byid(uint64_t, uint32_t); 1547extern struct pf_state *pf_find_state_all(struct pf_state_key_cmp *, 1548 u_int, int *); 1549extern struct pf_src_node *pf_find_src_node(struct pf_addr *, 1550 struct pf_rule *, sa_family_t, int); 1551extern void pf_unlink_src_node(struct pf_src_node *); 1552extern void pf_unlink_src_node_locked(struct pf_src_node *); 1553extern u_int pf_free_src_nodes(struct pf_src_node_list *); 1554extern void pf_print_state(struct pf_state *); 1555extern void pf_print_flags(u_int8_t); 1556extern u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t, 1557 u_int8_t); 1558 1559VNET_DECLARE(struct ifnet *, sync_ifp); 1560#define V_sync_ifp VNET(sync_ifp); 1561VNET_DECLARE(struct pf_rule, pf_default_rule); 1562#define V_pf_default_rule VNET(pf_default_rule) 1563extern void pf_addrcpy(struct pf_addr *, struct pf_addr *, 1564 u_int8_t); 1565void pf_free_rule(struct pf_rule *); 1566 1567#ifdef INET 1568int pf_test(int, struct ifnet *, struct mbuf **, struct inpcb *); 1569int pf_normalize_ip(struct mbuf **, int, struct pfi_kif *, u_short *, 1570 struct pf_pdesc *); 1571#endif /* INET */ 1572 1573#ifdef INET6 1574int pf_test6(int, struct ifnet *, struct mbuf **, struct inpcb *); 1575int pf_normalize_ip6(struct mbuf **, int, struct pfi_kif *, u_short *, 1576 struct pf_pdesc *); 1577void pf_poolmask(struct pf_addr *, struct pf_addr*, 1578 struct pf_addr *, struct pf_addr *, u_int8_t); 1579void pf_addr_inc(struct pf_addr *, sa_family_t); 1580int pf_refragment6(struct ifnet *, struct mbuf **, struct m_tag *); 1581#endif /* INET6 */ 1582 1583u_int32_t pf_new_isn(struct pf_state *); 1584void *pf_pull_hdr(struct mbuf *, int, void *, int, u_short *, u_short *, 1585 sa_family_t); 1586void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t); 1587void pf_send_deferred_syn(struct pf_state *); 1588int pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *, 1589 struct pf_addr *, sa_family_t); 1590int pf_match_addr_range(struct pf_addr *, struct pf_addr *, 1591 struct pf_addr *, sa_family_t); 1592int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t); 1593 1594void pf_normalize_init(void); 1595void pf_normalize_cleanup(void); 1596int pf_normalize_tcp(int, struct pfi_kif *, struct mbuf *, int, int, void *, 1597 struct pf_pdesc *); 1598void pf_normalize_tcp_cleanup(struct pf_state *); 1599int pf_normalize_tcp_init(struct mbuf *, int, struct pf_pdesc *, 1600 struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *); 1601int pf_normalize_tcp_stateful(struct mbuf *, int, struct pf_pdesc *, 1602 u_short *, struct tcphdr *, struct pf_state *, 1603 struct pf_state_peer *, struct pf_state_peer *, int *); 1604u_int32_t 1605 pf_state_expires(const struct pf_state *); 1606void pf_purge_expired_fragments(void); 1607int pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kif *, 1608 int); 1609int pf_socket_lookup(int, struct pf_pdesc *, struct mbuf *); 1610struct pf_state_key *pf_alloc_state_key(int); 1611void pfr_initialize(void); 1612void pfr_cleanup(void); 1613int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t); 1614void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t, 1615 u_int64_t, int, int, int); 1616int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, sa_family_t); 1617void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *); 1618struct pfr_ktable * 1619 pfr_attach_table(struct pf_ruleset *, char *); 1620void pfr_detach_table(struct pfr_ktable *); 1621int pfr_clr_tables(struct pfr_table *, int *, int); 1622int pfr_add_tables(struct pfr_table *, int, int *, int); 1623int pfr_del_tables(struct pfr_table *, int, int *, int); 1624int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int); 1625int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int); 1626int pfr_clr_tstats(struct pfr_table *, int, int *, int); 1627int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int); 1628int pfr_clr_addrs(struct pfr_table *, int *, int); 1629int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *, long); 1630int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1631 int); 1632int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1633 int); 1634int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1635 int *, int *, int *, int, u_int32_t); 1636int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int); 1637int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int); 1638int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *, 1639 int); 1640int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1641 int); 1642int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int); 1643int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int); 1644int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int); 1645int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *, 1646 int *, u_int32_t, int); 1647 1648MALLOC_DECLARE(PFI_MTYPE); 1649VNET_DECLARE(struct pfi_kif *, pfi_all); 1650#define V_pfi_all VNET(pfi_all) 1651 1652void pfi_initialize(void); 1653void pfi_cleanup(void); 1654void pfi_kif_ref(struct pfi_kif *); 1655void pfi_kif_unref(struct pfi_kif *); 1656struct pfi_kif *pfi_kif_find(const char *); 1657struct pfi_kif *pfi_kif_attach(struct pfi_kif *, const char *); 1658int pfi_kif_match(struct pfi_kif *, struct pfi_kif *); 1659void pfi_kif_purge(void); 1660int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *, 1661 sa_family_t); 1662int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t); 1663void pfi_dynaddr_remove(struct pfi_dynaddr *); 1664void pfi_dynaddr_copyout(struct pf_addr_wrap *); 1665void pfi_update_status(const char *, struct pf_status *); 1666void pfi_get_ifaces(const char *, struct pfi_kif *, int *); 1667int pfi_set_flags(const char *, int); 1668int pfi_clear_flags(const char *, int); 1669 1670int pf_match_tag(struct mbuf *, struct pf_rule *, int *, int); 1671int pf_tag_packet(struct mbuf *, struct pf_pdesc *, int); 1672int pf_addr_cmp(struct pf_addr *, struct pf_addr *, 1673 sa_family_t); 1674void pf_qid2qname(u_int32_t, char *); 1675 1676VNET_DECLARE(struct pf_kstatus, pf_status); 1677#define V_pf_status VNET(pf_status) 1678 1679struct pf_limit { 1680 uma_zone_t zone; 1681 u_int limit; 1682}; 1683VNET_DECLARE(struct pf_limit, pf_limits[PF_LIMIT_MAX]); 1684#define V_pf_limits VNET(pf_limits) 1685 1686#endif /* _KERNEL */ 1687 1688#ifdef _KERNEL 1689VNET_DECLARE(struct pf_anchor_global, pf_anchors); 1690#define V_pf_anchors VNET(pf_anchors) 1691VNET_DECLARE(struct pf_anchor, pf_main_anchor); 1692#define V_pf_main_anchor VNET(pf_main_anchor) 1693#define pf_main_ruleset V_pf_main_anchor.ruleset 1694#endif 1695 1696/* these ruleset functions can be linked into userland programs (pfctl) */ 1697int pf_get_ruleset_number(u_int8_t); 1698void pf_init_ruleset(struct pf_ruleset *); 1699int pf_anchor_setup(struct pf_rule *, 1700 const struct pf_ruleset *, const char *); 1701int pf_anchor_copyout(const struct pf_ruleset *, 1702 const struct pf_rule *, struct pfioc_rule *); 1703void pf_anchor_remove(struct pf_rule *); 1704void pf_remove_if_empty_ruleset(struct pf_ruleset *); 1705struct pf_ruleset *pf_find_ruleset(const char *); 1706struct pf_ruleset *pf_find_or_create_ruleset(const char *); 1707void pf_rs_initialize(void); 1708 1709/* The fingerprint functions can be linked into userland programs (tcpdump) */ 1710int pf_osfp_add(struct pf_osfp_ioctl *); 1711#ifdef _KERNEL 1712struct pf_osfp_enlist * 1713 pf_osfp_fingerprint(struct pf_pdesc *, struct mbuf *, int, 1714 const struct tcphdr *); 1715#endif /* _KERNEL */ 1716void pf_osfp_flush(void); 1717int pf_osfp_get(struct pf_osfp_ioctl *); 1718int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t); 1719 1720#ifdef _KERNEL 1721void pf_print_host(struct pf_addr *, u_int16_t, u_int8_t); 1722 1723void pf_step_into_anchor(struct pf_anchor_stackframe *, int *, 1724 struct pf_ruleset **, int, struct pf_rule **, 1725 struct pf_rule **, int *); 1726int pf_step_out_of_anchor(struct pf_anchor_stackframe *, int *, 1727 struct pf_ruleset **, int, struct pf_rule **, 1728 struct pf_rule **, int *); 1729 1730int pf_map_addr(u_int8_t, struct pf_rule *, 1731 struct pf_addr *, struct pf_addr *, 1732 struct pf_addr *, struct pf_src_node **); 1733struct pf_rule *pf_get_translation(struct pf_pdesc *, struct mbuf *, 1734 int, int, struct pfi_kif *, struct pf_src_node **, 1735 struct pf_state_key **, struct pf_state_key **, 1736 struct pf_addr *, struct pf_addr *, 1737 uint16_t, uint16_t, struct pf_anchor_stackframe *); 1738 1739struct pf_state_key *pf_state_key_setup(struct pf_pdesc *, struct pf_addr *, 1740 struct pf_addr *, u_int16_t, u_int16_t); 1741struct pf_state_key *pf_state_key_clone(struct pf_state_key *); 1742#endif /* _KERNEL */ 1743 1744#endif /* _NET_PFVAR_H_ */ 1745