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 * $FreeBSD$ 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/refcount.h> 39 #include <sys/tree.h> 40 41 #include <net/radix.h> 42 #include <netinet/in.h> 43 44 #include <netpfil/pf/pf.h> 45 #include <netpfil/pf/pf_altq.h> 46 #include <netpfil/pf/pf_mtag.h> 47 48 struct pf_addr { 49 union { 50 struct in_addr v4; 51 struct in6_addr v6; 52 u_int8_t addr8[16]; 53 u_int16_t addr16[8]; 54 u_int32_t addr32[4]; 55 } pfa; /* 128-bit address */ 56 #define v4 pfa.v4 57 #define v6 pfa.v6 58 #define addr8 pfa.addr8 59 #define addr16 pfa.addr16 60 #define addr32 pfa.addr32 61 }; 62 63 #define PFI_AFLAG_NETWORK 0x01 64 #define PFI_AFLAG_BROADCAST 0x02 65 #define PFI_AFLAG_PEER 0x04 66 #define PFI_AFLAG_MODEMASK 0x07 67 #define PFI_AFLAG_NOALIAS 0x08 68 69 struct pf_addr_wrap { 70 union { 71 struct { 72 struct pf_addr addr; 73 struct pf_addr mask; 74 } a; 75 char ifname[IFNAMSIZ]; 76 char tblname[PF_TABLE_NAME_SIZE]; 77 } v; 78 union { 79 struct pfi_dynaddr *dyn; 80 struct pfr_ktable *tbl; 81 int dyncnt; 82 int tblcnt; 83 } p; 84 u_int8_t type; /* PF_ADDR_* */ 85 u_int8_t iflags; /* PFI_AFLAG_* */ 86 }; 87 88 #ifdef _KERNEL 89 90 struct pfi_dynaddr { 91 TAILQ_ENTRY(pfi_dynaddr) entry; 92 struct pf_addr pfid_addr4; 93 struct pf_addr pfid_mask4; 94 struct pf_addr pfid_addr6; 95 struct pf_addr pfid_mask6; 96 struct pfr_ktable *pfid_kt; 97 struct pfi_kif *pfid_kif; 98 int pfid_net; /* mask or 128 */ 99 int pfid_acnt4; /* address count IPv4 */ 100 int pfid_acnt6; /* address count IPv6 */ 101 sa_family_t pfid_af; /* rule af */ 102 u_int8_t pfid_iflags; /* PFI_AFLAG_* */ 103 }; 104 105 /* 106 * Address manipulation macros 107 */ 108 #define HTONL(x) (x) = htonl((__uint32_t)(x)) 109 #define HTONS(x) (x) = htons((__uint16_t)(x)) 110 #define NTOHL(x) (x) = ntohl((__uint32_t)(x)) 111 #define NTOHS(x) (x) = ntohs((__uint16_t)(x)) 112 113 #define PF_NAME "pf" 114 115 #define PF_HASHROW_ASSERT(h) mtx_assert(&(h)->lock, MA_OWNED) 116 #define PF_HASHROW_LOCK(h) mtx_lock(&(h)->lock) 117 #define PF_HASHROW_UNLOCK(h) mtx_unlock(&(h)->lock) 118 119 #define PF_STATE_LOCK(s) \ 120 do { \ 121 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(s)]; \ 122 PF_HASHROW_LOCK(_ih); \ 123 } while (0) 124 125 #define PF_STATE_UNLOCK(s) \ 126 do { \ 127 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH((s))]; \ 128 PF_HASHROW_UNLOCK(_ih); \ 129 } while (0) 130 131 #ifdef INVARIANTS 132 #define PF_STATE_LOCK_ASSERT(s) \ 133 do { \ 134 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(s)]; \ 135 PF_HASHROW_ASSERT(_ih); \ 136 } while (0) 137 #else /* !INVARIANTS */ 138 #define PF_STATE_LOCK_ASSERT(s) do {} while (0) 139 #endif /* INVARIANTS */ 140 141 extern struct mtx pf_unlnkdrules_mtx; 142 #define PF_UNLNKDRULES_LOCK() mtx_lock(&pf_unlnkdrules_mtx) 143 #define PF_UNLNKDRULES_UNLOCK() mtx_unlock(&pf_unlnkdrules_mtx) 144 145 extern struct rwlock pf_rules_lock; 146 #define PF_RULES_RLOCK() rw_rlock(&pf_rules_lock) 147 #define PF_RULES_RUNLOCK() rw_runlock(&pf_rules_lock) 148 #define PF_RULES_WLOCK() rw_wlock(&pf_rules_lock) 149 #define PF_RULES_WUNLOCK() rw_wunlock(&pf_rules_lock) 150 #define PF_RULES_ASSERT() rw_assert(&pf_rules_lock, RA_LOCKED) 151 #define PF_RULES_RASSERT() rw_assert(&pf_rules_lock, RA_RLOCKED) 152 #define PF_RULES_WASSERT() rw_assert(&pf_rules_lock, RA_WLOCKED) 153 154 #define PF_MODVER 1 155 #define PFLOG_MODVER 1 156 #define PFSYNC_MODVER 1 157 158 #define PFLOG_MINVER 1 159 #define PFLOG_PREFVER PFLOG_MODVER 160 #define PFLOG_MAXVER 1 161 #define PFSYNC_MINVER 1 162 #define PFSYNC_PREFVER PFSYNC_MODVER 163 #define PFSYNC_MAXVER 1 164 165 #ifdef INET 166 #ifndef INET6 167 #define PF_INET_ONLY 168 #endif /* ! INET6 */ 169 #endif /* INET */ 170 171 #ifdef INET6 172 #ifndef INET 173 #define PF_INET6_ONLY 174 #endif /* ! INET */ 175 #endif /* INET6 */ 176 177 #ifdef INET 178 #ifdef INET6 179 #define PF_INET_INET6 180 #endif /* INET6 */ 181 #endif /* INET */ 182 183 #else 184 185 #define PF_INET_INET6 186 187 #endif /* _KERNEL */ 188 189 /* Both IPv4 and IPv6 */ 190 #ifdef PF_INET_INET6 191 192 #define PF_AEQ(a, b, c) \ 193 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \ 194 ((a)->addr32[3] == (b)->addr32[3] && \ 195 (a)->addr32[2] == (b)->addr32[2] && \ 196 (a)->addr32[1] == (b)->addr32[1] && \ 197 (a)->addr32[0] == (b)->addr32[0])) \ 198 199 #define PF_ANEQ(a, b, c) \ 200 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \ 201 ((a)->addr32[3] != (b)->addr32[3] || \ 202 (a)->addr32[2] != (b)->addr32[2] || \ 203 (a)->addr32[1] != (b)->addr32[1] || \ 204 (a)->addr32[0] != (b)->addr32[0])) \ 205 206 #define PF_AZERO(a, c) \ 207 ((c == AF_INET && !(a)->addr32[0]) || \ 208 (!(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 ) 317 318 319 struct pf_rule_uid { 320 uid_t uid[2]; 321 u_int8_t op; 322 }; 323 324 struct pf_rule_gid { 325 uid_t gid[2]; 326 u_int8_t op; 327 }; 328 329 struct 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 }; 335 336 struct pf_pooladdr { 337 struct pf_addr_wrap addr; 338 TAILQ_ENTRY(pf_pooladdr) entries; 339 char ifname[IFNAMSIZ]; 340 struct pfi_kif *kif; 341 }; 342 343 TAILQ_HEAD(pf_palist, pf_pooladdr); 344 345 struct 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 }; 355 356 struct 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 */ 368 typedef 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) 372 373 struct 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 */ 413 typedef u_int64_t pf_tcpopts_t; 414 struct 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 }; 453 454 struct 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 }; 467 468 469 union pf_rule_ptr { 470 struct pf_rule *ptr; 471 u_int32_t nr; 472 }; 473 474 #define PF_ANCHOR_NAME_SIZE 64 475 476 struct 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 states_cur; 516 u_int32_t states_tot; 517 u_int32_t max_states; 518 u_int32_t src_nodes; 519 u_int32_t max_src_nodes; 520 u_int32_t max_src_states; 521 u_int32_t spare1; /* netgraph */ 522 u_int32_t max_src_conn; 523 struct { 524 u_int32_t limit; 525 u_int32_t seconds; 526 } max_src_conn_rate; 527 u_int32_t qid; 528 u_int32_t pqid; 529 u_int32_t rt_listid; 530 u_int32_t nr; 531 u_int32_t prob; 532 uid_t cuid; 533 pid_t cpid; 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 }; 583 584 /* rule flags */ 585 #define PFRULE_DROP 0x0000 586 #define PFRULE_RETURNRST 0x0001 587 #define PFRULE_FRAGMENT 0x0002 588 #define PFRULE_RETURNICMP 0x0004 589 #define PFRULE_RETURN 0x0008 590 #define PFRULE_NOSYNC 0x0010 591 #define PFRULE_SRCTRACK 0x0020 /* track source states */ 592 #define PFRULE_RULESRCTRACK 0x0040 /* per rule */ 593 #define PFRULE_REFS 0x0080 /* rule has references */ 594 595 /* scrub flags */ 596 #define PFRULE_NODF 0x0100 597 #define PFRULE_FRAGCROP 0x0200 /* non-buffering frag cache */ 598 #define PFRULE_FRAGDROP 0x0400 /* drop funny fragments */ 599 #define PFRULE_RANDOMID 0x0800 600 #define PFRULE_REASSEMBLE_TCP 0x1000 601 #define PFRULE_SET_TOS 0x2000 602 603 /* rule flags again */ 604 #define PFRULE_IFBOUND 0x00010000 /* if-bound */ 605 #define PFRULE_STATESLOPPY 0x00020000 /* sloppy state tracking */ 606 607 #define PFSTATE_HIWAT 10000 /* default state table size */ 608 #define PFSTATE_ADAPT_START 6000 /* default adaptive timeout start */ 609 #define PFSTATE_ADAPT_END 12000 /* default adaptive timeout end */ 610 611 612 struct pf_threshold { 613 u_int32_t limit; 614 #define PF_THRESHOLD_MULT 1000 615 #define PF_THRESHOLD_MAX 0xffffffff / PF_THRESHOLD_MULT 616 u_int32_t seconds; 617 u_int32_t count; 618 u_int32_t last; 619 }; 620 621 struct pf_src_node { 622 LIST_ENTRY(pf_src_node) entry; 623 struct pf_addr addr; 624 struct pf_addr raddr; 625 union pf_rule_ptr rule; 626 struct pfi_kif *kif; 627 u_int64_t bytes[2]; 628 u_int64_t packets[2]; 629 u_int32_t states; 630 u_int32_t conn; 631 struct pf_threshold conn_rate; 632 u_int32_t creation; 633 u_int32_t expire; 634 sa_family_t af; 635 u_int8_t ruletype; 636 }; 637 638 #define PFSNODE_HIWAT 10000 /* default source node table size */ 639 640 struct pf_state_scrub { 641 struct timeval pfss_last; /* time received last packet */ 642 u_int32_t pfss_tsecr; /* last echoed timestamp */ 643 u_int32_t pfss_tsval; /* largest timestamp */ 644 u_int32_t pfss_tsval0; /* original timestamp */ 645 u_int16_t pfss_flags; 646 #define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */ 647 #define PFSS_PAWS 0x0010 /* stricter PAWS checks */ 648 #define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */ 649 #define PFSS_DATA_TS 0x0040 /* timestamp on data packets */ 650 #define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */ 651 u_int8_t pfss_ttl; /* stashed TTL */ 652 u_int8_t pad; 653 u_int32_t pfss_ts_mod; /* timestamp modulation */ 654 }; 655 656 struct pf_state_host { 657 struct pf_addr addr; 658 u_int16_t port; 659 u_int16_t pad; 660 }; 661 662 struct pf_state_peer { 663 struct pf_state_scrub *scrub; /* state is scrubbed */ 664 u_int32_t seqlo; /* Max sequence number sent */ 665 u_int32_t seqhi; /* Max the other end ACKd + win */ 666 u_int32_t seqdiff; /* Sequence number modulator */ 667 u_int16_t max_win; /* largest window (pre scaling) */ 668 u_int16_t mss; /* Maximum segment size option */ 669 u_int8_t state; /* active state level */ 670 u_int8_t wscale; /* window scaling factor */ 671 u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */ 672 u_int8_t pad[1]; 673 }; 674 675 /* Keep synced with struct pf_state_key. */ 676 struct pf_state_key_cmp { 677 struct pf_addr addr[2]; 678 u_int16_t port[2]; 679 sa_family_t af; 680 u_int8_t proto; 681 u_int8_t pad[2]; 682 }; 683 684 struct pf_state_key { 685 struct pf_addr addr[2]; 686 u_int16_t port[2]; 687 sa_family_t af; 688 u_int8_t proto; 689 u_int8_t pad[2]; 690 691 LIST_ENTRY(pf_state_key) entry; 692 TAILQ_HEAD(, pf_state) states[2]; 693 }; 694 695 /* Keep synced with struct pf_state. */ 696 struct pf_state_cmp { 697 u_int64_t id; 698 u_int32_t creatorid; 699 u_int8_t direction; 700 u_int8_t pad[3]; 701 }; 702 703 struct pf_state { 704 u_int64_t id; 705 u_int32_t creatorid; 706 u_int8_t direction; 707 u_int8_t pad[3]; 708 709 u_int refs; 710 TAILQ_ENTRY(pf_state) sync_list; 711 TAILQ_ENTRY(pf_state) key_list[2]; 712 LIST_ENTRY(pf_state) entry; 713 struct pf_state_peer src; 714 struct pf_state_peer dst; 715 union pf_rule_ptr rule; 716 union pf_rule_ptr anchor; 717 union pf_rule_ptr nat_rule; 718 struct pf_addr rt_addr; 719 struct pf_state_key *key[2]; /* addresses stack and wire */ 720 struct pfi_kif *kif; 721 struct pfi_kif *rt_kif; 722 struct pf_src_node *src_node; 723 struct pf_src_node *nat_src_node; 724 u_int64_t packets[2]; 725 u_int64_t bytes[2]; 726 u_int32_t creation; 727 u_int32_t expire; 728 u_int32_t pfsync_time; 729 u_int16_t tag; 730 u_int8_t log; 731 u_int8_t state_flags; 732 #define PFSTATE_ALLOWOPTS 0x01 733 #define PFSTATE_SLOPPY 0x02 734 /* was PFSTATE_PFLOW 0x04 */ 735 #define PFSTATE_NOSYNC 0x08 736 #define PFSTATE_ACK 0x10 737 u_int8_t timeout; 738 u_int8_t sync_state; /* PFSYNC_S_x */ 739 740 /* XXX */ 741 u_int8_t sync_updates; 742 u_int8_t _tail[3]; 743 }; 744 745 /* 746 * Unified state structures for pulling states out of the kernel 747 * used by pfsync(4) and the pf(4) ioctl. 748 */ 749 struct pfsync_state_scrub { 750 u_int16_t pfss_flags; 751 u_int8_t pfss_ttl; /* stashed TTL */ 752 #define PFSYNC_SCRUB_FLAG_VALID 0x01 753 u_int8_t scrub_flag; 754 u_int32_t pfss_ts_mod; /* timestamp modulation */ 755 } __packed; 756 757 struct pfsync_state_peer { 758 struct pfsync_state_scrub scrub; /* state is scrubbed */ 759 u_int32_t seqlo; /* Max sequence number sent */ 760 u_int32_t seqhi; /* Max the other end ACKd + win */ 761 u_int32_t seqdiff; /* Sequence number modulator */ 762 u_int16_t max_win; /* largest window (pre scaling) */ 763 u_int16_t mss; /* Maximum segment size option */ 764 u_int8_t state; /* active state level */ 765 u_int8_t wscale; /* window scaling factor */ 766 u_int8_t pad[6]; 767 } __packed; 768 769 struct pfsync_state_key { 770 struct pf_addr addr[2]; 771 u_int16_t port[2]; 772 }; 773 774 struct pfsync_state { 775 u_int64_t id; 776 char ifname[IFNAMSIZ]; 777 struct pfsync_state_key key[2]; 778 struct pfsync_state_peer src; 779 struct pfsync_state_peer dst; 780 struct pf_addr rt_addr; 781 u_int32_t rule; 782 u_int32_t anchor; 783 u_int32_t nat_rule; 784 u_int32_t creation; 785 u_int32_t expire; 786 u_int32_t packets[2][2]; 787 u_int32_t bytes[2][2]; 788 u_int32_t creatorid; 789 sa_family_t af; 790 u_int8_t proto; 791 u_int8_t direction; 792 u_int8_t __spare[2]; 793 u_int8_t log; 794 u_int8_t state_flags; 795 u_int8_t timeout; 796 u_int8_t sync_flags; 797 u_int8_t updates; 798 } __packed; 799 800 #ifdef _KERNEL 801 /* pfsync */ 802 typedef int pfsync_state_import_t(struct pfsync_state *, u_int8_t); 803 typedef void pfsync_insert_state_t(struct pf_state *); 804 typedef void pfsync_update_state_t(struct pf_state *); 805 typedef void pfsync_delete_state_t(struct pf_state *); 806 typedef void pfsync_clear_states_t(u_int32_t, const char *); 807 typedef int pfsync_defer_t(struct pf_state *, struct mbuf *); 808 809 extern pfsync_state_import_t *pfsync_state_import_ptr; 810 extern pfsync_insert_state_t *pfsync_insert_state_ptr; 811 extern pfsync_update_state_t *pfsync_update_state_ptr; 812 extern pfsync_delete_state_t *pfsync_delete_state_ptr; 813 extern pfsync_clear_states_t *pfsync_clear_states_ptr; 814 extern pfsync_defer_t *pfsync_defer_ptr; 815 816 void pfsync_state_export(struct pfsync_state *, 817 struct pf_state *); 818 819 /* pflog */ 820 struct pf_ruleset; 821 struct pf_pdesc; 822 typedef int pflog_packet_t(struct pfi_kif *, struct mbuf *, sa_family_t, 823 u_int8_t, u_int8_t, struct pf_rule *, struct pf_rule *, 824 struct pf_ruleset *, struct pf_pdesc *, int); 825 extern pflog_packet_t *pflog_packet_ptr; 826 827 #define V_pf_end_threads VNET(pf_end_threads) 828 #endif /* _KERNEL */ 829 830 #define PFSYNC_FLAG_SRCNODE 0x04 831 #define PFSYNC_FLAG_NATSRCNODE 0x08 832 833 /* for copies to/from network byte order */ 834 /* ioctl interface also uses network byte order */ 835 #define pf_state_peer_hton(s,d) do { \ 836 (d)->seqlo = htonl((s)->seqlo); \ 837 (d)->seqhi = htonl((s)->seqhi); \ 838 (d)->seqdiff = htonl((s)->seqdiff); \ 839 (d)->max_win = htons((s)->max_win); \ 840 (d)->mss = htons((s)->mss); \ 841 (d)->state = (s)->state; \ 842 (d)->wscale = (s)->wscale; \ 843 if ((s)->scrub) { \ 844 (d)->scrub.pfss_flags = \ 845 htons((s)->scrub->pfss_flags & PFSS_TIMESTAMP); \ 846 (d)->scrub.pfss_ttl = (s)->scrub->pfss_ttl; \ 847 (d)->scrub.pfss_ts_mod = htonl((s)->scrub->pfss_ts_mod);\ 848 (d)->scrub.scrub_flag = PFSYNC_SCRUB_FLAG_VALID; \ 849 } \ 850 } while (0) 851 852 #define pf_state_peer_ntoh(s,d) do { \ 853 (d)->seqlo = ntohl((s)->seqlo); \ 854 (d)->seqhi = ntohl((s)->seqhi); \ 855 (d)->seqdiff = ntohl((s)->seqdiff); \ 856 (d)->max_win = ntohs((s)->max_win); \ 857 (d)->mss = ntohs((s)->mss); \ 858 (d)->state = (s)->state; \ 859 (d)->wscale = (s)->wscale; \ 860 if ((s)->scrub.scrub_flag == PFSYNC_SCRUB_FLAG_VALID && \ 861 (d)->scrub != NULL) { \ 862 (d)->scrub->pfss_flags = \ 863 ntohs((s)->scrub.pfss_flags) & PFSS_TIMESTAMP; \ 864 (d)->scrub->pfss_ttl = (s)->scrub.pfss_ttl; \ 865 (d)->scrub->pfss_ts_mod = ntohl((s)->scrub.pfss_ts_mod);\ 866 } \ 867 } while (0) 868 869 #define pf_state_counter_hton(s,d) do { \ 870 d[0] = htonl((s>>32)&0xffffffff); \ 871 d[1] = htonl(s&0xffffffff); \ 872 } while (0) 873 874 #define pf_state_counter_from_pfsync(s) \ 875 (((u_int64_t)(s[0])<<32) | (u_int64_t)(s[1])) 876 877 #define pf_state_counter_ntoh(s,d) do { \ 878 d = ntohl(s[0]); \ 879 d = d<<32; \ 880 d += ntohl(s[1]); \ 881 } while (0) 882 883 TAILQ_HEAD(pf_rulequeue, pf_rule); 884 885 struct pf_anchor; 886 887 struct pf_ruleset { 888 struct { 889 struct pf_rulequeue queues[2]; 890 struct { 891 struct pf_rulequeue *ptr; 892 struct pf_rule **ptr_array; 893 u_int32_t rcount; 894 u_int32_t ticket; 895 int open; 896 } active, inactive; 897 } rules[PF_RULESET_MAX]; 898 struct pf_anchor *anchor; 899 u_int32_t tticket; 900 int tables; 901 int topen; 902 }; 903 904 RB_HEAD(pf_anchor_global, pf_anchor); 905 RB_HEAD(pf_anchor_node, pf_anchor); 906 struct pf_anchor { 907 RB_ENTRY(pf_anchor) entry_global; 908 RB_ENTRY(pf_anchor) entry_node; 909 struct pf_anchor *parent; 910 struct pf_anchor_node children; 911 char name[PF_ANCHOR_NAME_SIZE]; 912 char path[MAXPATHLEN]; 913 struct pf_ruleset ruleset; 914 int refcnt; /* anchor rules */ 915 int match; /* XXX: used for pfctl black magic */ 916 }; 917 RB_PROTOTYPE(pf_anchor_global, pf_anchor, entry_global, pf_anchor_compare); 918 RB_PROTOTYPE(pf_anchor_node, pf_anchor, entry_node, pf_anchor_compare); 919 920 #define PF_RESERVED_ANCHOR "_pf" 921 922 #define PFR_TFLAG_PERSIST 0x00000001 923 #define PFR_TFLAG_CONST 0x00000002 924 #define PFR_TFLAG_ACTIVE 0x00000004 925 #define PFR_TFLAG_INACTIVE 0x00000008 926 #define PFR_TFLAG_REFERENCED 0x00000010 927 #define PFR_TFLAG_REFDANCHOR 0x00000020 928 #define PFR_TFLAG_COUNTERS 0x00000040 929 /* Adjust masks below when adding flags. */ 930 #define PFR_TFLAG_USRMASK (PFR_TFLAG_PERSIST | \ 931 PFR_TFLAG_CONST | \ 932 PFR_TFLAG_COUNTERS) 933 #define PFR_TFLAG_SETMASK (PFR_TFLAG_ACTIVE | \ 934 PFR_TFLAG_INACTIVE | \ 935 PFR_TFLAG_REFERENCED | \ 936 PFR_TFLAG_REFDANCHOR) 937 #define PFR_TFLAG_ALLMASK (PFR_TFLAG_PERSIST | \ 938 PFR_TFLAG_CONST | \ 939 PFR_TFLAG_ACTIVE | \ 940 PFR_TFLAG_INACTIVE | \ 941 PFR_TFLAG_REFERENCED | \ 942 PFR_TFLAG_REFDANCHOR | \ 943 PFR_TFLAG_COUNTERS) 944 945 struct pf_anchor_stackframe; 946 947 struct pfr_table { 948 char pfrt_anchor[MAXPATHLEN]; 949 char pfrt_name[PF_TABLE_NAME_SIZE]; 950 u_int32_t pfrt_flags; 951 u_int8_t pfrt_fback; 952 }; 953 954 enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED, 955 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE, 956 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_NOCOUNT, PFR_FB_MAX }; 957 958 struct pfr_addr { 959 union { 960 struct in_addr _pfra_ip4addr; 961 struct in6_addr _pfra_ip6addr; 962 } pfra_u; 963 u_int8_t pfra_af; 964 u_int8_t pfra_net; 965 u_int8_t pfra_not; 966 u_int8_t pfra_fback; 967 }; 968 #define pfra_ip4addr pfra_u._pfra_ip4addr 969 #define pfra_ip6addr pfra_u._pfra_ip6addr 970 971 enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX }; 972 enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX }; 973 #define PFR_OP_XPASS PFR_OP_ADDR_MAX 974 975 struct pfr_astats { 976 struct pfr_addr pfras_a; 977 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 978 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 979 long pfras_tzero; 980 }; 981 982 enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX }; 983 984 struct pfr_tstats { 985 struct pfr_table pfrts_t; 986 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 987 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 988 u_int64_t pfrts_match; 989 u_int64_t pfrts_nomatch; 990 long pfrts_tzero; 991 int pfrts_cnt; 992 int pfrts_refcnt[PFR_REFCNT_MAX]; 993 }; 994 #define pfrts_name pfrts_t.pfrt_name 995 #define pfrts_flags pfrts_t.pfrt_flags 996 997 #ifndef _SOCKADDR_UNION_DEFINED 998 #define _SOCKADDR_UNION_DEFINED 999 union sockaddr_union { 1000 struct sockaddr sa; 1001 struct sockaddr_in sin; 1002 struct sockaddr_in6 sin6; 1003 }; 1004 #endif /* _SOCKADDR_UNION_DEFINED */ 1005 1006 struct pfr_kcounters { 1007 u_int64_t pfrkc_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1008 u_int64_t pfrkc_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1009 }; 1010 1011 SLIST_HEAD(pfr_kentryworkq, pfr_kentry); 1012 struct pfr_kentry { 1013 struct radix_node pfrke_node[2]; 1014 union sockaddr_union pfrke_sa; 1015 SLIST_ENTRY(pfr_kentry) pfrke_workq; 1016 struct pfr_kcounters *pfrke_counters; 1017 long pfrke_tzero; 1018 u_int8_t pfrke_af; 1019 u_int8_t pfrke_net; 1020 u_int8_t pfrke_not; 1021 u_int8_t pfrke_mark; 1022 }; 1023 1024 SLIST_HEAD(pfr_ktableworkq, pfr_ktable); 1025 RB_HEAD(pfr_ktablehead, pfr_ktable); 1026 struct pfr_ktable { 1027 struct pfr_tstats pfrkt_ts; 1028 RB_ENTRY(pfr_ktable) pfrkt_tree; 1029 SLIST_ENTRY(pfr_ktable) pfrkt_workq; 1030 struct radix_node_head *pfrkt_ip4; 1031 struct radix_node_head *pfrkt_ip6; 1032 struct pfr_ktable *pfrkt_shadow; 1033 struct pfr_ktable *pfrkt_root; 1034 struct pf_ruleset *pfrkt_rs; 1035 long pfrkt_larg; 1036 int pfrkt_nflags; 1037 }; 1038 #define pfrkt_t pfrkt_ts.pfrts_t 1039 #define pfrkt_name pfrkt_t.pfrt_name 1040 #define pfrkt_anchor pfrkt_t.pfrt_anchor 1041 #define pfrkt_ruleset pfrkt_t.pfrt_ruleset 1042 #define pfrkt_flags pfrkt_t.pfrt_flags 1043 #define pfrkt_cnt pfrkt_ts.pfrts_cnt 1044 #define pfrkt_refcnt pfrkt_ts.pfrts_refcnt 1045 #define pfrkt_packets pfrkt_ts.pfrts_packets 1046 #define pfrkt_bytes pfrkt_ts.pfrts_bytes 1047 #define pfrkt_match pfrkt_ts.pfrts_match 1048 #define pfrkt_nomatch pfrkt_ts.pfrts_nomatch 1049 #define pfrkt_tzero pfrkt_ts.pfrts_tzero 1050 1051 /* keep synced with pfi_kif, used in RB_FIND */ 1052 struct pfi_kif_cmp { 1053 char pfik_name[IFNAMSIZ]; 1054 }; 1055 1056 struct pfi_kif { 1057 char pfik_name[IFNAMSIZ]; 1058 union { 1059 RB_ENTRY(pfi_kif) _pfik_tree; 1060 LIST_ENTRY(pfi_kif) _pfik_list; 1061 } _pfik_glue; 1062 #define pfik_tree _pfik_glue._pfik_tree 1063 #define pfik_list _pfik_glue._pfik_list 1064 u_int64_t pfik_packets[2][2][2]; 1065 u_int64_t pfik_bytes[2][2][2]; 1066 u_int32_t pfik_tzero; 1067 u_int pfik_flags; 1068 struct ifnet *pfik_ifp; 1069 struct ifg_group *pfik_group; 1070 u_int pfik_rulerefs; 1071 TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs; 1072 }; 1073 1074 #define PFI_IFLAG_REFS 0x0001 /* has state references */ 1075 #define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */ 1076 1077 struct pf_pdesc { 1078 struct { 1079 int done; 1080 uid_t uid; 1081 gid_t gid; 1082 } lookup; 1083 u_int64_t tot_len; /* Make Mickey money */ 1084 union { 1085 struct tcphdr *tcp; 1086 struct udphdr *udp; 1087 struct icmp *icmp; 1088 #ifdef INET6 1089 struct icmp6_hdr *icmp6; 1090 #endif /* INET6 */ 1091 void *any; 1092 } hdr; 1093 1094 struct pf_rule *nat_rule; /* nat/rdr rule applied to packet */ 1095 struct pf_addr *src; /* src address */ 1096 struct pf_addr *dst; /* dst address */ 1097 u_int16_t *sport; 1098 u_int16_t *dport; 1099 struct pf_mtag *pf_mtag; 1100 1101 u_int32_t p_len; /* total length of payload */ 1102 1103 u_int16_t *ip_sum; 1104 u_int16_t *proto_sum; 1105 u_int16_t flags; /* Let SCRUB trigger behavior in 1106 * state code. Easier than tags */ 1107 #define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */ 1108 #define PFDESC_IP_REAS 0x0002 /* IP frags would've been reassembled */ 1109 sa_family_t af; 1110 u_int8_t proto; 1111 u_int8_t tos; 1112 u_int8_t dir; /* direction */ 1113 u_int8_t sidx; /* key index for source */ 1114 u_int8_t didx; /* key index for destination */ 1115 }; 1116 1117 /* flags for RDR options */ 1118 #define PF_DPORT_RANGE 0x01 /* Dest port uses range */ 1119 #define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */ 1120 1121 /* Counters for other things we want to keep track of */ 1122 #define LCNT_STATES 0 /* states */ 1123 #define LCNT_SRCSTATES 1 /* max-src-states */ 1124 #define LCNT_SRCNODES 2 /* max-src-nodes */ 1125 #define LCNT_SRCCONN 3 /* max-src-conn */ 1126 #define LCNT_SRCCONNRATE 4 /* max-src-conn-rate */ 1127 #define LCNT_OVERLOAD_TABLE 5 /* entry added to overload table */ 1128 #define LCNT_OVERLOAD_FLUSH 6 /* state entries flushed */ 1129 #define LCNT_MAX 7 /* total+1 */ 1130 1131 #define LCNT_NAMES { \ 1132 "max states per rule", \ 1133 "max-src-states", \ 1134 "max-src-nodes", \ 1135 "max-src-conn", \ 1136 "max-src-conn-rate", \ 1137 "overload table insertion", \ 1138 "overload flush states", \ 1139 NULL \ 1140 } 1141 1142 /* UDP state enumeration */ 1143 #define PFUDPS_NO_TRAFFIC 0 1144 #define PFUDPS_SINGLE 1 1145 #define PFUDPS_MULTIPLE 2 1146 1147 #define PFUDPS_NSTATES 3 /* number of state levels */ 1148 1149 #define PFUDPS_NAMES { \ 1150 "NO_TRAFFIC", \ 1151 "SINGLE", \ 1152 "MULTIPLE", \ 1153 NULL \ 1154 } 1155 1156 /* Other protocol state enumeration */ 1157 #define PFOTHERS_NO_TRAFFIC 0 1158 #define PFOTHERS_SINGLE 1 1159 #define PFOTHERS_MULTIPLE 2 1160 1161 #define PFOTHERS_NSTATES 3 /* number of state levels */ 1162 1163 #define PFOTHERS_NAMES { \ 1164 "NO_TRAFFIC", \ 1165 "SINGLE", \ 1166 "MULTIPLE", \ 1167 NULL \ 1168 } 1169 1170 #define FCNT_STATE_SEARCH 0 1171 #define FCNT_STATE_INSERT 1 1172 #define FCNT_STATE_REMOVALS 2 1173 #define FCNT_MAX 3 1174 1175 #define SCNT_SRC_NODE_SEARCH 0 1176 #define SCNT_SRC_NODE_INSERT 1 1177 #define SCNT_SRC_NODE_REMOVALS 2 1178 #define SCNT_MAX 3 1179 1180 #define ACTION_SET(a, x) \ 1181 do { \ 1182 if ((a) != NULL) \ 1183 *(a) = (x); \ 1184 } while (0) 1185 1186 #define REASON_SET(a, x) \ 1187 do { \ 1188 if ((a) != NULL) \ 1189 *(a) = (x); \ 1190 if (x < PFRES_MAX) \ 1191 V_pf_status.counters[x]++; \ 1192 } while (0) 1193 1194 struct pf_status { 1195 u_int64_t counters[PFRES_MAX]; 1196 u_int64_t lcounters[LCNT_MAX]; /* limit counters */ 1197 u_int64_t fcounters[FCNT_MAX]; 1198 u_int64_t scounters[SCNT_MAX]; 1199 u_int64_t pcounters[2][2][3]; 1200 u_int64_t bcounters[2][2]; 1201 u_int32_t running; 1202 u_int32_t states; 1203 u_int32_t src_nodes; 1204 u_int32_t since; 1205 u_int32_t debug; 1206 u_int32_t hostid; 1207 char ifname[IFNAMSIZ]; 1208 u_int8_t pf_chksum[PF_MD5_DIGEST_LENGTH]; 1209 }; 1210 1211 struct pf_divert { 1212 union { 1213 struct in_addr ipv4; 1214 struct in6_addr ipv6; 1215 } addr; 1216 u_int16_t port; 1217 }; 1218 1219 #define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */ 1220 #define PFR_KENTRY_HIWAT 200000 /* Number of table entries */ 1221 1222 /* 1223 * ioctl parameter structures 1224 */ 1225 1226 struct pfioc_pooladdr { 1227 u_int32_t action; 1228 u_int32_t ticket; 1229 u_int32_t nr; 1230 u_int32_t r_num; 1231 u_int8_t r_action; 1232 u_int8_t r_last; 1233 u_int8_t af; 1234 char anchor[MAXPATHLEN]; 1235 struct pf_pooladdr addr; 1236 }; 1237 1238 struct pfioc_rule { 1239 u_int32_t action; 1240 u_int32_t ticket; 1241 u_int32_t pool_ticket; 1242 u_int32_t nr; 1243 char anchor[MAXPATHLEN]; 1244 char anchor_call[MAXPATHLEN]; 1245 struct pf_rule rule; 1246 }; 1247 1248 struct pfioc_natlook { 1249 struct pf_addr saddr; 1250 struct pf_addr daddr; 1251 struct pf_addr rsaddr; 1252 struct pf_addr rdaddr; 1253 u_int16_t sport; 1254 u_int16_t dport; 1255 u_int16_t rsport; 1256 u_int16_t rdport; 1257 sa_family_t af; 1258 u_int8_t proto; 1259 u_int8_t direction; 1260 }; 1261 1262 struct pfioc_state { 1263 struct pfsync_state state; 1264 }; 1265 1266 struct pfioc_src_node_kill { 1267 sa_family_t psnk_af; 1268 struct pf_rule_addr psnk_src; 1269 struct pf_rule_addr psnk_dst; 1270 u_int psnk_killed; 1271 }; 1272 1273 struct pfioc_state_kill { 1274 struct pf_state_cmp psk_pfcmp; 1275 sa_family_t psk_af; 1276 int psk_proto; 1277 struct pf_rule_addr psk_src; 1278 struct pf_rule_addr psk_dst; 1279 char psk_ifname[IFNAMSIZ]; 1280 char psk_label[PF_RULE_LABEL_SIZE]; 1281 u_int psk_killed; 1282 }; 1283 1284 struct pfioc_states { 1285 int ps_len; 1286 union { 1287 caddr_t psu_buf; 1288 struct pfsync_state *psu_states; 1289 } ps_u; 1290 #define ps_buf ps_u.psu_buf 1291 #define ps_states ps_u.psu_states 1292 }; 1293 1294 struct pfioc_src_nodes { 1295 int psn_len; 1296 union { 1297 caddr_t psu_buf; 1298 struct pf_src_node *psu_src_nodes; 1299 } psn_u; 1300 #define psn_buf psn_u.psu_buf 1301 #define psn_src_nodes psn_u.psu_src_nodes 1302 }; 1303 1304 struct pfioc_if { 1305 char ifname[IFNAMSIZ]; 1306 }; 1307 1308 struct pfioc_tm { 1309 int timeout; 1310 int seconds; 1311 }; 1312 1313 struct pfioc_limit { 1314 int index; 1315 unsigned limit; 1316 }; 1317 1318 struct pfioc_altq { 1319 u_int32_t action; 1320 u_int32_t ticket; 1321 u_int32_t nr; 1322 struct pf_altq altq; 1323 }; 1324 1325 struct pfioc_qstats { 1326 u_int32_t ticket; 1327 u_int32_t nr; 1328 void *buf; 1329 int nbytes; 1330 u_int8_t scheduler; 1331 }; 1332 1333 struct pfioc_ruleset { 1334 u_int32_t nr; 1335 char path[MAXPATHLEN]; 1336 char name[PF_ANCHOR_NAME_SIZE]; 1337 }; 1338 1339 #define PF_RULESET_ALTQ (PF_RULESET_MAX) 1340 #define PF_RULESET_TABLE (PF_RULESET_MAX+1) 1341 struct pfioc_trans { 1342 int size; /* number of elements */ 1343 int esize; /* size of each element in bytes */ 1344 struct pfioc_trans_e { 1345 int rs_num; 1346 char anchor[MAXPATHLEN]; 1347 u_int32_t ticket; 1348 } *array; 1349 }; 1350 1351 #define PFR_FLAG_ATOMIC 0x00000001 /* unused */ 1352 #define PFR_FLAG_DUMMY 0x00000002 1353 #define PFR_FLAG_FEEDBACK 0x00000004 1354 #define PFR_FLAG_CLSTATS 0x00000008 1355 #define PFR_FLAG_ADDRSTOO 0x00000010 1356 #define PFR_FLAG_REPLACE 0x00000020 1357 #define PFR_FLAG_ALLRSETS 0x00000040 1358 #define PFR_FLAG_ALLMASK 0x0000007F 1359 #ifdef _KERNEL 1360 #define PFR_FLAG_USERIOCTL 0x10000000 1361 #endif 1362 1363 struct pfioc_table { 1364 struct pfr_table pfrio_table; 1365 void *pfrio_buffer; 1366 int pfrio_esize; 1367 int pfrio_size; 1368 int pfrio_size2; 1369 int pfrio_nadd; 1370 int pfrio_ndel; 1371 int pfrio_nchange; 1372 int pfrio_flags; 1373 u_int32_t pfrio_ticket; 1374 }; 1375 #define pfrio_exists pfrio_nadd 1376 #define pfrio_nzero pfrio_nadd 1377 #define pfrio_nmatch pfrio_nadd 1378 #define pfrio_naddr pfrio_size2 1379 #define pfrio_setflag pfrio_size2 1380 #define pfrio_clrflag pfrio_nadd 1381 1382 struct pfioc_iface { 1383 char pfiio_name[IFNAMSIZ]; 1384 void *pfiio_buffer; 1385 int pfiio_esize; 1386 int pfiio_size; 1387 int pfiio_nzero; 1388 int pfiio_flags; 1389 }; 1390 1391 1392 /* 1393 * ioctl operations 1394 */ 1395 1396 #define DIOCSTART _IO ('D', 1) 1397 #define DIOCSTOP _IO ('D', 2) 1398 #define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule) 1399 #define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule) 1400 #define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule) 1401 /* XXX cut 8 - 17 */ 1402 #define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill) 1403 #define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state) 1404 #define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if) 1405 #define DIOCGETSTATUS _IOWR('D', 21, struct pf_status) 1406 #define DIOCCLRSTATUS _IO ('D', 22) 1407 #define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook) 1408 #define DIOCSETDEBUG _IOWR('D', 24, u_int32_t) 1409 #define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states) 1410 #define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule) 1411 /* XXX cut 26 - 28 */ 1412 #define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm) 1413 #define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm) 1414 #define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state) 1415 #define DIOCCLRRULECTRS _IO ('D', 38) 1416 #define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit) 1417 #define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit) 1418 #define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill) 1419 #define DIOCSTARTALTQ _IO ('D', 42) 1420 #define DIOCSTOPALTQ _IO ('D', 43) 1421 #define DIOCADDALTQ _IOWR('D', 45, struct pfioc_altq) 1422 #define DIOCGETALTQS _IOWR('D', 47, struct pfioc_altq) 1423 #define DIOCGETALTQ _IOWR('D', 48, struct pfioc_altq) 1424 #define DIOCCHANGEALTQ _IOWR('D', 49, struct pfioc_altq) 1425 #define DIOCGETQSTATS _IOWR('D', 50, struct pfioc_qstats) 1426 #define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr) 1427 #define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr) 1428 #define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr) 1429 #define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr) 1430 #define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr) 1431 /* XXX cut 55 - 57 */ 1432 #define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset) 1433 #define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset) 1434 #define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table) 1435 #define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table) 1436 #define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table) 1437 #define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table) 1438 #define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table) 1439 #define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table) 1440 #define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table) 1441 #define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table) 1442 #define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table) 1443 #define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table) 1444 #define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table) 1445 #define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table) 1446 #define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table) 1447 #define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table) 1448 #define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table) 1449 #define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table) 1450 #define DIOCOSFPFLUSH _IO('D', 78) 1451 #define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl) 1452 #define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl) 1453 #define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans) 1454 #define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans) 1455 #define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans) 1456 #define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes) 1457 #define DIOCCLRSRCNODES _IO('D', 85) 1458 #define DIOCSETHOSTID _IOWR('D', 86, u_int32_t) 1459 #define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface) 1460 #define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface) 1461 #define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface) 1462 #define DIOCKILLSRCNODES _IOWR('D', 91, struct pfioc_src_node_kill) 1463 struct pf_ifspeed { 1464 char ifname[IFNAMSIZ]; 1465 u_int32_t baudrate; 1466 }; 1467 #define DIOCGIFSPEED _IOWR('D', 92, struct pf_ifspeed) 1468 1469 #ifdef _KERNEL 1470 LIST_HEAD(pf_src_node_list, pf_src_node); 1471 struct pf_srchash { 1472 struct pf_src_node_list nodes; 1473 struct mtx lock; 1474 }; 1475 1476 struct pf_keyhash { 1477 LIST_HEAD(, pf_state_key) keys; 1478 struct mtx lock; 1479 }; 1480 1481 struct pf_idhash { 1482 LIST_HEAD(, pf_state) states; 1483 struct mtx lock; 1484 }; 1485 1486 #define PF_HASHSIZ (32768) 1487 VNET_DECLARE(struct pf_keyhash *, pf_keyhash); 1488 VNET_DECLARE(struct pf_idhash *, pf_idhash); 1489 VNET_DECLARE(u_long, pf_hashmask); 1490 #define V_pf_keyhash VNET(pf_keyhash) 1491 #define V_pf_idhash VNET(pf_idhash) 1492 #define V_pf_hashmask VNET(pf_hashmask) 1493 VNET_DECLARE(struct pf_srchash *, pf_srchash); 1494 VNET_DECLARE(u_long, pf_srchashmask); 1495 #define V_pf_srchash VNET(pf_srchash) 1496 #define V_pf_srchashmask VNET(pf_srchashmask) 1497 1498 #define PF_IDHASH(s) (be64toh((s)->id) % (V_pf_hashmask + 1)) 1499 1500 VNET_DECLARE(void *, pf_swi_cookie); 1501 #define V_pf_swi_cookie VNET(pf_swi_cookie) 1502 1503 VNET_DECLARE(uint64_t, pf_stateid[MAXCPU]); 1504 #define V_pf_stateid VNET(pf_stateid) 1505 1506 TAILQ_HEAD(pf_altqqueue, pf_altq); 1507 VNET_DECLARE(struct pf_altqqueue, pf_altqs[2]); 1508 #define V_pf_altqs VNET(pf_altqs) 1509 VNET_DECLARE(struct pf_palist, pf_pabuf); 1510 #define V_pf_pabuf VNET(pf_pabuf) 1511 1512 VNET_DECLARE(u_int32_t, ticket_altqs_active); 1513 #define V_ticket_altqs_active VNET(ticket_altqs_active) 1514 VNET_DECLARE(u_int32_t, ticket_altqs_inactive); 1515 #define V_ticket_altqs_inactive VNET(ticket_altqs_inactive) 1516 VNET_DECLARE(int, altqs_inactive_open); 1517 #define V_altqs_inactive_open VNET(altqs_inactive_open) 1518 VNET_DECLARE(u_int32_t, ticket_pabuf); 1519 #define V_ticket_pabuf VNET(ticket_pabuf) 1520 VNET_DECLARE(struct pf_altqqueue *, pf_altqs_active); 1521 #define V_pf_altqs_active VNET(pf_altqs_active) 1522 VNET_DECLARE(struct pf_altqqueue *, pf_altqs_inactive); 1523 #define V_pf_altqs_inactive VNET(pf_altqs_inactive) 1524 1525 VNET_DECLARE(struct pf_rulequeue, pf_unlinked_rules); 1526 #define V_pf_unlinked_rules VNET(pf_unlinked_rules) 1527 1528 void pf_initialize(void); 1529 void pf_cleanup(void); 1530 1531 struct pf_mtag *pf_get_mtag(struct mbuf *); 1532 1533 extern void pf_calc_skip_steps(struct pf_rulequeue *); 1534 #ifdef ALTQ 1535 extern void pf_altq_ifnet_event(struct ifnet *, int); 1536 #endif 1537 VNET_DECLARE(uma_zone_t, pf_state_z); 1538 #define V_pf_state_z VNET(pf_state_z) 1539 VNET_DECLARE(uma_zone_t, pf_state_key_z); 1540 #define V_pf_state_key_z VNET(pf_state_key_z) 1541 VNET_DECLARE(uma_zone_t, pf_state_scrub_z); 1542 #define V_pf_state_scrub_z VNET(pf_state_scrub_z) 1543 1544 extern void pf_purge_thread(void *); 1545 extern void pf_intr(void *); 1546 extern void pf_purge_expired_src_nodes(void); 1547 1548 extern int pf_unlink_state(struct pf_state *, u_int); 1549 #define PF_ENTER_LOCKED 0x00000001 1550 #define PF_RETURN_LOCKED 0x00000002 1551 extern int pf_state_insert(struct pfi_kif *, 1552 struct pf_state_key *, 1553 struct pf_state_key *, 1554 struct pf_state *); 1555 extern void pf_free_state(struct pf_state *); 1556 1557 static __inline void 1558 pf_ref_state(struct pf_state *s) 1559 { 1560 1561 refcount_acquire(&s->refs); 1562 } 1563 1564 static __inline int 1565 pf_release_state(struct pf_state *s) 1566 { 1567 1568 if (refcount_release(&s->refs)) { 1569 pf_free_state(s); 1570 return (1); 1571 } else 1572 return (0); 1573 } 1574 1575 extern struct pf_state *pf_find_state_byid(uint64_t, uint32_t); 1576 extern struct pf_state *pf_find_state_all(struct pf_state_key_cmp *, 1577 u_int, int *); 1578 extern struct pf_src_node *pf_find_src_node(struct pf_addr *, 1579 struct pf_rule *, sa_family_t, int); 1580 extern void pf_unlink_src_node(struct pf_src_node *); 1581 extern void pf_unlink_src_node_locked(struct pf_src_node *); 1582 extern u_int pf_free_src_nodes(struct pf_src_node_list *); 1583 extern void pf_print_state(struct pf_state *); 1584 extern void pf_print_flags(u_int8_t); 1585 extern u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t, 1586 u_int8_t); 1587 1588 VNET_DECLARE(struct ifnet *, sync_ifp); 1589 #define V_sync_ifp VNET(sync_ifp); 1590 VNET_DECLARE(struct pf_rule, pf_default_rule); 1591 #define V_pf_default_rule VNET(pf_default_rule) 1592 extern void pf_addrcpy(struct pf_addr *, struct pf_addr *, 1593 u_int8_t); 1594 void pf_free_rule(struct pf_rule *); 1595 1596 #ifdef INET 1597 int pf_test(int, struct ifnet *, struct mbuf **, struct inpcb *); 1598 #endif /* INET */ 1599 1600 #ifdef INET6 1601 int pf_test6(int, struct ifnet *, struct mbuf **, struct inpcb *); 1602 void pf_poolmask(struct pf_addr *, struct pf_addr*, 1603 struct pf_addr *, struct pf_addr *, u_int8_t); 1604 void pf_addr_inc(struct pf_addr *, sa_family_t); 1605 #endif /* INET6 */ 1606 1607 u_int32_t pf_new_isn(struct pf_state *); 1608 void *pf_pull_hdr(struct mbuf *, int, void *, int, u_short *, u_short *, 1609 sa_family_t); 1610 void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t); 1611 void pf_send_deferred_syn(struct pf_state *); 1612 int pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *, 1613 struct pf_addr *, sa_family_t); 1614 int pf_match_addr_range(struct pf_addr *, struct pf_addr *, 1615 struct pf_addr *, sa_family_t); 1616 int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t); 1617 1618 void pf_normalize_init(void); 1619 void pf_normalize_cleanup(void); 1620 int pf_normalize_ip(struct mbuf **, int, struct pfi_kif *, u_short *, 1621 struct pf_pdesc *); 1622 int pf_normalize_ip6(struct mbuf **, int, struct pfi_kif *, u_short *, 1623 struct pf_pdesc *); 1624 int pf_normalize_tcp(int, struct pfi_kif *, struct mbuf *, int, int, void *, 1625 struct pf_pdesc *); 1626 void pf_normalize_tcp_cleanup(struct pf_state *); 1627 int pf_normalize_tcp_init(struct mbuf *, int, struct pf_pdesc *, 1628 struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *); 1629 int pf_normalize_tcp_stateful(struct mbuf *, int, struct pf_pdesc *, 1630 u_short *, struct tcphdr *, struct pf_state *, 1631 struct pf_state_peer *, struct pf_state_peer *, int *); 1632 u_int32_t 1633 pf_state_expires(const struct pf_state *); 1634 void pf_purge_expired_fragments(void); 1635 int pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kif *, 1636 int); 1637 int pf_socket_lookup(int, struct pf_pdesc *, struct mbuf *); 1638 struct pf_state_key *pf_alloc_state_key(int); 1639 void pfr_initialize(void); 1640 void pfr_cleanup(void); 1641 int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t); 1642 void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t, 1643 u_int64_t, int, int, int); 1644 int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, sa_family_t); 1645 void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *); 1646 struct pfr_ktable * 1647 pfr_attach_table(struct pf_ruleset *, char *); 1648 void pfr_detach_table(struct pfr_ktable *); 1649 int pfr_clr_tables(struct pfr_table *, int *, int); 1650 int pfr_add_tables(struct pfr_table *, int, int *, int); 1651 int pfr_del_tables(struct pfr_table *, int, int *, int); 1652 int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int); 1653 int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int); 1654 int pfr_clr_tstats(struct pfr_table *, int, int *, int); 1655 int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int); 1656 int pfr_clr_addrs(struct pfr_table *, int *, int); 1657 int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *, long); 1658 int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1659 int); 1660 int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1661 int); 1662 int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1663 int *, int *, int *, int, u_int32_t); 1664 int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int); 1665 int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int); 1666 int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *, 1667 int); 1668 int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1669 int); 1670 int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int); 1671 int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int); 1672 int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int); 1673 int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *, 1674 int *, u_int32_t, int); 1675 1676 MALLOC_DECLARE(PFI_MTYPE); 1677 VNET_DECLARE(struct pfi_kif *, pfi_all); 1678 #define V_pfi_all VNET(pfi_all) 1679 1680 void pfi_initialize(void); 1681 void pfi_cleanup(void); 1682 void pfi_kif_ref(struct pfi_kif *); 1683 void pfi_kif_unref(struct pfi_kif *); 1684 struct pfi_kif *pfi_kif_find(const char *); 1685 struct pfi_kif *pfi_kif_attach(struct pfi_kif *, const char *); 1686 int pfi_kif_match(struct pfi_kif *, struct pfi_kif *); 1687 void pfi_kif_purge(void); 1688 int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *, 1689 sa_family_t); 1690 int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t); 1691 void pfi_dynaddr_remove(struct pfi_dynaddr *); 1692 void pfi_dynaddr_copyout(struct pf_addr_wrap *); 1693 void pfi_update_status(const char *, struct pf_status *); 1694 void pfi_get_ifaces(const char *, struct pfi_kif *, int *); 1695 int pfi_set_flags(const char *, int); 1696 int pfi_clear_flags(const char *, int); 1697 1698 int pf_match_tag(struct mbuf *, struct pf_rule *, int *, int); 1699 int pf_tag_packet(struct mbuf *, struct pf_pdesc *, int); 1700 void pf_qid2qname(u_int32_t, char *); 1701 1702 VNET_DECLARE(struct pf_status, pf_status); 1703 #define V_pf_status VNET(pf_status) 1704 1705 struct pf_limit { 1706 uma_zone_t zone; 1707 u_int limit; 1708 }; 1709 VNET_DECLARE(struct pf_limit, pf_limits[PF_LIMIT_MAX]); 1710 #define V_pf_limits VNET(pf_limits) 1711 1712 #endif /* _KERNEL */ 1713 1714 #ifdef _KERNEL 1715 VNET_DECLARE(struct pf_anchor_global, pf_anchors); 1716 #define V_pf_anchors VNET(pf_anchors) 1717 VNET_DECLARE(struct pf_anchor, pf_main_anchor); 1718 #define V_pf_main_anchor VNET(pf_main_anchor) 1719 #define pf_main_ruleset V_pf_main_anchor.ruleset 1720 #endif 1721 1722 /* these ruleset functions can be linked into userland programs (pfctl) */ 1723 int pf_get_ruleset_number(u_int8_t); 1724 void pf_init_ruleset(struct pf_ruleset *); 1725 int pf_anchor_setup(struct pf_rule *, 1726 const struct pf_ruleset *, const char *); 1727 int pf_anchor_copyout(const struct pf_ruleset *, 1728 const struct pf_rule *, struct pfioc_rule *); 1729 void pf_anchor_remove(struct pf_rule *); 1730 void pf_remove_if_empty_ruleset(struct pf_ruleset *); 1731 struct pf_ruleset *pf_find_ruleset(const char *); 1732 struct pf_ruleset *pf_find_or_create_ruleset(const char *); 1733 void pf_rs_initialize(void); 1734 1735 /* The fingerprint functions can be linked into userland programs (tcpdump) */ 1736 int pf_osfp_add(struct pf_osfp_ioctl *); 1737 #ifdef _KERNEL 1738 struct pf_osfp_enlist * 1739 pf_osfp_fingerprint(struct pf_pdesc *, struct mbuf *, int, 1740 const struct tcphdr *); 1741 #endif /* _KERNEL */ 1742 void pf_osfp_flush(void); 1743 int pf_osfp_get(struct pf_osfp_ioctl *); 1744 int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t); 1745 1746 #ifdef _KERNEL 1747 void pf_print_host(struct pf_addr *, u_int16_t, u_int8_t); 1748 1749 void pf_step_into_anchor(struct pf_anchor_stackframe *, int *, 1750 struct pf_ruleset **, int, struct pf_rule **, 1751 struct pf_rule **, int *); 1752 int pf_step_out_of_anchor(struct pf_anchor_stackframe *, int *, 1753 struct pf_ruleset **, int, struct pf_rule **, 1754 struct pf_rule **, int *); 1755 1756 int pf_map_addr(u_int8_t, struct pf_rule *, 1757 struct pf_addr *, struct pf_addr *, 1758 struct pf_addr *, struct pf_src_node **); 1759 struct pf_rule *pf_get_translation(struct pf_pdesc *, struct mbuf *, 1760 int, int, struct pfi_kif *, struct pf_src_node **, 1761 struct pf_state_key **, struct pf_state_key **, 1762 struct pf_addr *, struct pf_addr *, 1763 uint16_t, uint16_t, struct pf_anchor_stackframe *); 1764 1765 struct pf_state_key *pf_state_key_setup(struct pf_pdesc *, struct pf_addr *, 1766 struct pf_addr *, u_int16_t, u_int16_t); 1767 struct pf_state_key *pf_state_key_clone(struct pf_state_key *); 1768 #endif /* _KERNEL */ 1769 1770 #endif /* _NET_PFVAR_H_ */ 1771