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/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 49 struct 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 70 struct 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 91 struct 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 */ 141 142 extern 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) 145 146 extern 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 ((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 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \ 202 ((a)->addr32[3] != (b)->addr32[3] || \ 203 (a)->addr32[2] != (b)->addr32[2] || \ 204 (a)->addr32[1] != (b)->addr32[1] || \ 205 (a)->addr32[0] != (b)->addr32[0])) \ 206 207 #define PF_AZERO(a, c) \ 208 ((c == AF_INET && !(a)->addr32[0]) || \ 209 (!(a)->addr32[0] && !(a)->addr32[1] && \ 210 !(a)->addr32[2] && !(a)->addr32[3] )) \ 211 212 #define PF_MATCHA(n, a, m, b, f) \ 213 pf_match_addr(n, a, m, b, f) 214 215 #define PF_ACPY(a, b, f) \ 216 pf_addrcpy(a, b, f) 217 218 #define PF_AINC(a, f) \ 219 pf_addr_inc(a, f) 220 221 #define PF_POOLMASK(a, b, c, d, f) \ 222 pf_poolmask(a, b, c, d, f) 223 224 #else 225 226 /* Just IPv6 */ 227 228 #ifdef PF_INET6_ONLY 229 230 #define PF_AEQ(a, b, c) \ 231 ((a)->addr32[3] == (b)->addr32[3] && \ 232 (a)->addr32[2] == (b)->addr32[2] && \ 233 (a)->addr32[1] == (b)->addr32[1] && \ 234 (a)->addr32[0] == (b)->addr32[0]) \ 235 236 #define PF_ANEQ(a, b, c) \ 237 ((a)->addr32[3] != (b)->addr32[3] || \ 238 (a)->addr32[2] != (b)->addr32[2] || \ 239 (a)->addr32[1] != (b)->addr32[1] || \ 240 (a)->addr32[0] != (b)->addr32[0]) \ 241 242 #define PF_AZERO(a, c) \ 243 (!(a)->addr32[0] && \ 244 !(a)->addr32[1] && \ 245 !(a)->addr32[2] && \ 246 !(a)->addr32[3] ) \ 247 248 #define PF_MATCHA(n, a, m, b, f) \ 249 pf_match_addr(n, a, m, b, f) 250 251 #define PF_ACPY(a, b, f) \ 252 pf_addrcpy(a, b, f) 253 254 #define PF_AINC(a, f) \ 255 pf_addr_inc(a, f) 256 257 #define PF_POOLMASK(a, b, c, d, f) \ 258 pf_poolmask(a, b, c, d, f) 259 260 #else 261 262 /* Just IPv4 */ 263 #ifdef PF_INET_ONLY 264 265 #define PF_AEQ(a, b, c) \ 266 ((a)->addr32[0] == (b)->addr32[0]) 267 268 #define PF_ANEQ(a, b, c) \ 269 ((a)->addr32[0] != (b)->addr32[0]) 270 271 #define PF_AZERO(a, c) \ 272 (!(a)->addr32[0]) 273 274 #define PF_MATCHA(n, a, m, b, f) \ 275 pf_match_addr(n, a, m, b, f) 276 277 #define PF_ACPY(a, b, f) \ 278 (a)->v4.s_addr = (b)->v4.s_addr 279 280 #define PF_AINC(a, f) \ 281 do { \ 282 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \ 283 } while (0) 284 285 #define PF_POOLMASK(a, b, c, d, f) \ 286 do { \ 287 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \ 288 (((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \ 289 } while (0) 290 291 #endif /* PF_INET_ONLY */ 292 #endif /* PF_INET6_ONLY */ 293 #endif /* PF_INET_INET6 */ 294 295 /* 296 * XXX callers not FIB-aware in our version of pf yet. 297 * OpenBSD fixed it later it seems, 2010/05/07 13:33:16 claudio. 298 */ 299 #define PF_MISMATCHAW(aw, x, af, neg, ifp, rtid) \ 300 ( \ 301 (((aw)->type == PF_ADDR_NOROUTE && \ 302 pf_routable((x), (af), NULL, (rtid))) || \ 303 (((aw)->type == PF_ADDR_URPFFAILED && (ifp) != NULL && \ 304 pf_routable((x), (af), (ifp), (rtid))) || \ 305 ((aw)->type == PF_ADDR_TABLE && \ 306 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \ 307 ((aw)->type == PF_ADDR_DYNIFTL && \ 308 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \ 309 ((aw)->type == PF_ADDR_RANGE && \ 310 !pf_match_addr_range(&(aw)->v.a.addr, \ 311 &(aw)->v.a.mask, (x), (af))) || \ 312 ((aw)->type == PF_ADDR_ADDRMASK && \ 313 !PF_AZERO(&(aw)->v.a.mask, (af)) && \ 314 !PF_MATCHA(0, &(aw)->v.a.addr, \ 315 &(aw)->v.a.mask, (x), (af))))) != \ 316 (neg) \ 317 ) 318 319 320 struct pf_rule_uid { 321 uid_t uid[2]; 322 u_int8_t op; 323 }; 324 325 struct pf_rule_gid { 326 uid_t gid[2]; 327 u_int8_t op; 328 }; 329 330 struct pf_rule_addr { 331 struct pf_addr_wrap addr; 332 u_int16_t port[2]; 333 u_int8_t neg; 334 u_int8_t port_op; 335 }; 336 337 struct pf_pooladdr { 338 struct pf_addr_wrap addr; 339 TAILQ_ENTRY(pf_pooladdr) entries; 340 char ifname[IFNAMSIZ]; 341 struct pfi_kif *kif; 342 }; 343 344 TAILQ_HEAD(pf_palist, pf_pooladdr); 345 346 struct pf_poolhashkey { 347 union { 348 u_int8_t key8[16]; 349 u_int16_t key16[8]; 350 u_int32_t key32[4]; 351 } pfk; /* 128-bit hash key */ 352 #define key8 pfk.key8 353 #define key16 pfk.key16 354 #define key32 pfk.key32 355 }; 356 357 struct pf_pool { 358 struct pf_palist list; 359 struct pf_pooladdr *cur; 360 struct pf_poolhashkey key; 361 struct pf_addr counter; 362 int tblidx; 363 u_int16_t proxy_port[2]; 364 u_int8_t opts; 365 }; 366 367 368 /* A packed Operating System description for fingerprinting */ 369 typedef u_int32_t pf_osfp_t; 370 #define PF_OSFP_ANY ((pf_osfp_t)0) 371 #define PF_OSFP_UNKNOWN ((pf_osfp_t)-1) 372 #define PF_OSFP_NOMATCH ((pf_osfp_t)-2) 373 374 struct pf_osfp_entry { 375 SLIST_ENTRY(pf_osfp_entry) fp_entry; 376 pf_osfp_t fp_os; 377 int fp_enflags; 378 #define PF_OSFP_EXPANDED 0x001 /* expanded entry */ 379 #define PF_OSFP_GENERIC 0x002 /* generic signature */ 380 #define PF_OSFP_NODETAIL 0x004 /* no p0f details */ 381 #define PF_OSFP_LEN 32 382 char fp_class_nm[PF_OSFP_LEN]; 383 char fp_version_nm[PF_OSFP_LEN]; 384 char fp_subtype_nm[PF_OSFP_LEN]; 385 }; 386 #define PF_OSFP_ENTRY_EQ(a, b) \ 387 ((a)->fp_os == (b)->fp_os && \ 388 memcmp((a)->fp_class_nm, (b)->fp_class_nm, PF_OSFP_LEN) == 0 && \ 389 memcmp((a)->fp_version_nm, (b)->fp_version_nm, PF_OSFP_LEN) == 0 && \ 390 memcmp((a)->fp_subtype_nm, (b)->fp_subtype_nm, PF_OSFP_LEN) == 0) 391 392 /* handle pf_osfp_t packing */ 393 #define _FP_RESERVED_BIT 1 /* For the special negative #defines */ 394 #define _FP_UNUSED_BITS 1 395 #define _FP_CLASS_BITS 10 /* OS Class (Windows, Linux) */ 396 #define _FP_VERSION_BITS 10 /* OS version (95, 98, NT, 2.4.54, 3.2) */ 397 #define _FP_SUBTYPE_BITS 10 /* patch level (NT SP4, SP3, ECN patch) */ 398 #define PF_OSFP_UNPACK(osfp, class, version, subtype) do { \ 399 (class) = ((osfp) >> (_FP_VERSION_BITS+_FP_SUBTYPE_BITS)) & \ 400 ((1 << _FP_CLASS_BITS) - 1); \ 401 (version) = ((osfp) >> _FP_SUBTYPE_BITS) & \ 402 ((1 << _FP_VERSION_BITS) - 1);\ 403 (subtype) = (osfp) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 404 } while(0) 405 #define PF_OSFP_PACK(osfp, class, version, subtype) do { \ 406 (osfp) = ((class) & ((1 << _FP_CLASS_BITS) - 1)) << (_FP_VERSION_BITS \ 407 + _FP_SUBTYPE_BITS); \ 408 (osfp) |= ((version) & ((1 << _FP_VERSION_BITS) - 1)) << \ 409 _FP_SUBTYPE_BITS; \ 410 (osfp) |= (subtype) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 411 } while(0) 412 413 /* the fingerprint of an OSes TCP SYN packet */ 414 typedef u_int64_t pf_tcpopts_t; 415 struct pf_os_fingerprint { 416 SLIST_HEAD(pf_osfp_enlist, pf_osfp_entry) fp_oses; /* list of matches */ 417 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 418 u_int16_t fp_wsize; /* TCP window size */ 419 u_int16_t fp_psize; /* ip->ip_len */ 420 u_int16_t fp_mss; /* TCP MSS */ 421 u_int16_t fp_flags; 422 #define PF_OSFP_WSIZE_MOD 0x0001 /* Window modulus */ 423 #define PF_OSFP_WSIZE_DC 0x0002 /* Window don't care */ 424 #define PF_OSFP_WSIZE_MSS 0x0004 /* Window multiple of MSS */ 425 #define PF_OSFP_WSIZE_MTU 0x0008 /* Window multiple of MTU */ 426 #define PF_OSFP_PSIZE_MOD 0x0010 /* packet size modulus */ 427 #define PF_OSFP_PSIZE_DC 0x0020 /* packet size don't care */ 428 #define PF_OSFP_WSCALE 0x0040 /* TCP window scaling */ 429 #define PF_OSFP_WSCALE_MOD 0x0080 /* TCP window scale modulus */ 430 #define PF_OSFP_WSCALE_DC 0x0100 /* TCP window scale dont-care */ 431 #define PF_OSFP_MSS 0x0200 /* TCP MSS */ 432 #define PF_OSFP_MSS_MOD 0x0400 /* TCP MSS modulus */ 433 #define PF_OSFP_MSS_DC 0x0800 /* TCP MSS dont-care */ 434 #define PF_OSFP_DF 0x1000 /* IPv4 don't fragment bit */ 435 #define PF_OSFP_TS0 0x2000 /* Zero timestamp */ 436 #define PF_OSFP_INET6 0x4000 /* IPv6 */ 437 u_int8_t fp_optcnt; /* TCP option count */ 438 u_int8_t fp_wscale; /* TCP window scaling */ 439 u_int8_t fp_ttl; /* IPv4 TTL */ 440 #define PF_OSFP_MAXTTL_OFFSET 40 441 /* TCP options packing */ 442 #define PF_OSFP_TCPOPT_NOP 0x0 /* TCP NOP option */ 443 #define PF_OSFP_TCPOPT_WSCALE 0x1 /* TCP window scaling option */ 444 #define PF_OSFP_TCPOPT_MSS 0x2 /* TCP max segment size opt */ 445 #define PF_OSFP_TCPOPT_SACK 0x3 /* TCP SACK OK option */ 446 #define PF_OSFP_TCPOPT_TS 0x4 /* TCP timestamp option */ 447 #define PF_OSFP_TCPOPT_BITS 3 /* bits used by each option */ 448 #define PF_OSFP_MAX_OPTS \ 449 (sizeof(((struct pf_os_fingerprint *)0)->fp_tcpopts) * 8) \ 450 / PF_OSFP_TCPOPT_BITS 451 452 SLIST_ENTRY(pf_os_fingerprint) fp_next; 453 }; 454 455 struct pf_osfp_ioctl { 456 struct pf_osfp_entry fp_os; 457 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 458 u_int16_t fp_wsize; /* TCP window size */ 459 u_int16_t fp_psize; /* ip->ip_len */ 460 u_int16_t fp_mss; /* TCP MSS */ 461 u_int16_t fp_flags; 462 u_int8_t fp_optcnt; /* TCP option count */ 463 u_int8_t fp_wscale; /* TCP window scaling */ 464 u_int8_t fp_ttl; /* IPv4 TTL */ 465 466 int fp_getnum; /* DIOCOSFPGET number */ 467 }; 468 469 470 union pf_rule_ptr { 471 struct pf_rule *ptr; 472 u_int32_t nr; 473 }; 474 475 #define PF_ANCHOR_NAME_SIZE 64 476 477 struct pf_rule { 478 struct pf_rule_addr src; 479 struct pf_rule_addr dst; 480 #define PF_SKIP_IFP 0 481 #define PF_SKIP_DIR 1 482 #define PF_SKIP_AF 2 483 #define PF_SKIP_PROTO 3 484 #define PF_SKIP_SRC_ADDR 4 485 #define PF_SKIP_SRC_PORT 5 486 #define PF_SKIP_DST_ADDR 6 487 #define PF_SKIP_DST_PORT 7 488 #define PF_SKIP_COUNT 8 489 union pf_rule_ptr skip[PF_SKIP_COUNT]; 490 #define PF_RULE_LABEL_SIZE 64 491 char label[PF_RULE_LABEL_SIZE]; 492 char ifname[IFNAMSIZ]; 493 char qname[PF_QNAME_SIZE]; 494 char pqname[PF_QNAME_SIZE]; 495 #define PF_TAG_NAME_SIZE 64 496 char tagname[PF_TAG_NAME_SIZE]; 497 char match_tagname[PF_TAG_NAME_SIZE]; 498 499 char overload_tblname[PF_TABLE_NAME_SIZE]; 500 501 TAILQ_ENTRY(pf_rule) entries; 502 struct pf_pool rpool; 503 504 u_int64_t evaluations; 505 u_int64_t packets[2]; 506 u_int64_t bytes[2]; 507 508 struct pfi_kif *kif; 509 struct pf_anchor *anchor; 510 struct pfr_ktable *overload_tbl; 511 512 pf_osfp_t os_fingerprint; 513 514 int rtableid; 515 u_int32_t timeout[PFTM_MAX]; 516 u_int32_t max_states; 517 u_int32_t max_src_nodes; 518 u_int32_t max_src_states; 519 u_int32_t max_src_conn; 520 struct { 521 u_int32_t limit; 522 u_int32_t seconds; 523 } max_src_conn_rate; 524 u_int32_t qid; 525 u_int32_t pqid; 526 u_int32_t rt_listid; 527 u_int32_t nr; 528 u_int32_t prob; 529 uid_t cuid; 530 pid_t cpid; 531 532 counter_u64_t states_cur; 533 counter_u64_t states_tot; 534 counter_u64_t src_nodes; 535 536 u_int16_t return_icmp; 537 u_int16_t return_icmp6; 538 u_int16_t max_mss; 539 u_int16_t tag; 540 u_int16_t match_tag; 541 u_int16_t spare2; /* netgraph */ 542 543 struct pf_rule_uid uid; 544 struct pf_rule_gid gid; 545 546 u_int32_t rule_flag; 547 u_int8_t action; 548 u_int8_t direction; 549 u_int8_t log; 550 u_int8_t logif; 551 u_int8_t quick; 552 u_int8_t ifnot; 553 u_int8_t match_tag_not; 554 u_int8_t natpass; 555 556 #define PF_STATE_NORMAL 0x1 557 #define PF_STATE_MODULATE 0x2 558 #define PF_STATE_SYNPROXY 0x3 559 u_int8_t keep_state; 560 sa_family_t af; 561 u_int8_t proto; 562 u_int8_t type; 563 u_int8_t code; 564 u_int8_t flags; 565 u_int8_t flagset; 566 u_int8_t min_ttl; 567 u_int8_t allow_opts; 568 u_int8_t rt; 569 u_int8_t return_ttl; 570 u_int8_t tos; 571 u_int8_t set_tos; 572 u_int8_t anchor_relative; 573 u_int8_t anchor_wildcard; 574 575 #define PF_FLUSH 0x01 576 #define PF_FLUSH_GLOBAL 0x02 577 u_int8_t flush; 578 579 struct { 580 struct pf_addr addr; 581 u_int16_t port; 582 } divert; 583 }; 584 585 /* rule flags */ 586 #define PFRULE_DROP 0x0000 587 #define PFRULE_RETURNRST 0x0001 588 #define PFRULE_FRAGMENT 0x0002 589 #define PFRULE_RETURNICMP 0x0004 590 #define PFRULE_RETURN 0x0008 591 #define PFRULE_NOSYNC 0x0010 592 #define PFRULE_SRCTRACK 0x0020 /* track source states */ 593 #define PFRULE_RULESRCTRACK 0x0040 /* per rule */ 594 #define PFRULE_REFS 0x0080 /* rule has references */ 595 596 /* scrub flags */ 597 #define PFRULE_NODF 0x0100 598 #define PFRULE_FRAGCROP 0x0200 /* non-buffering frag cache */ 599 #define PFRULE_FRAGDROP 0x0400 /* drop funny fragments */ 600 #define PFRULE_RANDOMID 0x0800 601 #define PFRULE_REASSEMBLE_TCP 0x1000 602 #define PFRULE_SET_TOS 0x2000 603 604 /* rule flags again */ 605 #define PFRULE_IFBOUND 0x00010000 /* if-bound */ 606 #define PFRULE_STATESLOPPY 0x00020000 /* sloppy state tracking */ 607 608 #define PFSTATE_HIWAT 10000 /* default state table size */ 609 #define PFSTATE_ADAPT_START 6000 /* default adaptive timeout start */ 610 #define PFSTATE_ADAPT_END 12000 /* default adaptive timeout end */ 611 612 613 struct pf_threshold { 614 u_int32_t limit; 615 #define PF_THRESHOLD_MULT 1000 616 #define PF_THRESHOLD_MAX 0xffffffff / PF_THRESHOLD_MULT 617 u_int32_t seconds; 618 u_int32_t count; 619 u_int32_t last; 620 }; 621 622 struct pf_src_node { 623 LIST_ENTRY(pf_src_node) entry; 624 struct pf_addr addr; 625 struct pf_addr raddr; 626 union pf_rule_ptr rule; 627 struct pfi_kif *kif; 628 u_int64_t bytes[2]; 629 u_int64_t packets[2]; 630 u_int32_t states; 631 u_int32_t conn; 632 struct pf_threshold conn_rate; 633 u_int32_t creation; 634 u_int32_t expire; 635 sa_family_t af; 636 u_int8_t ruletype; 637 }; 638 639 #define PFSNODE_HIWAT 10000 /* default source node table size */ 640 641 struct pf_state_scrub { 642 struct timeval pfss_last; /* time received last packet */ 643 u_int32_t pfss_tsecr; /* last echoed timestamp */ 644 u_int32_t pfss_tsval; /* largest timestamp */ 645 u_int32_t pfss_tsval0; /* original timestamp */ 646 u_int16_t pfss_flags; 647 #define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */ 648 #define PFSS_PAWS 0x0010 /* stricter PAWS checks */ 649 #define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */ 650 #define PFSS_DATA_TS 0x0040 /* timestamp on data packets */ 651 #define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */ 652 u_int8_t pfss_ttl; /* stashed TTL */ 653 u_int8_t pad; 654 u_int32_t pfss_ts_mod; /* timestamp modulation */ 655 }; 656 657 struct pf_state_host { 658 struct pf_addr addr; 659 u_int16_t port; 660 u_int16_t pad; 661 }; 662 663 struct pf_state_peer { 664 struct pf_state_scrub *scrub; /* state is scrubbed */ 665 u_int32_t seqlo; /* Max sequence number sent */ 666 u_int32_t seqhi; /* Max the other end ACKd + win */ 667 u_int32_t seqdiff; /* Sequence number modulator */ 668 u_int16_t max_win; /* largest window (pre scaling) */ 669 u_int16_t mss; /* Maximum segment size option */ 670 u_int8_t state; /* active state level */ 671 u_int8_t wscale; /* window scaling factor */ 672 u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */ 673 u_int8_t pad[1]; 674 }; 675 676 /* Keep synced with struct pf_state_key. */ 677 struct pf_state_key_cmp { 678 struct pf_addr addr[2]; 679 u_int16_t port[2]; 680 sa_family_t af; 681 u_int8_t proto; 682 u_int8_t pad[2]; 683 }; 684 685 struct pf_state_key { 686 struct pf_addr addr[2]; 687 u_int16_t port[2]; 688 sa_family_t af; 689 u_int8_t proto; 690 u_int8_t pad[2]; 691 692 LIST_ENTRY(pf_state_key) entry; 693 TAILQ_HEAD(, pf_state) states[2]; 694 }; 695 696 /* Keep synced with struct pf_state. */ 697 struct pf_state_cmp { 698 u_int64_t id; 699 u_int32_t creatorid; 700 u_int8_t direction; 701 u_int8_t pad[3]; 702 }; 703 704 struct pf_state { 705 u_int64_t id; 706 u_int32_t creatorid; 707 u_int8_t direction; 708 u_int8_t pad[3]; 709 710 u_int refs; 711 TAILQ_ENTRY(pf_state) sync_list; 712 TAILQ_ENTRY(pf_state) key_list[2]; 713 LIST_ENTRY(pf_state) entry; 714 struct pf_state_peer src; 715 struct pf_state_peer dst; 716 union pf_rule_ptr rule; 717 union pf_rule_ptr anchor; 718 union pf_rule_ptr nat_rule; 719 struct pf_addr rt_addr; 720 struct pf_state_key *key[2]; /* addresses stack and wire */ 721 struct pfi_kif *kif; 722 struct pfi_kif *rt_kif; 723 struct pf_src_node *src_node; 724 struct pf_src_node *nat_src_node; 725 u_int64_t packets[2]; 726 u_int64_t bytes[2]; 727 u_int32_t creation; 728 u_int32_t expire; 729 u_int32_t pfsync_time; 730 u_int16_t tag; 731 u_int8_t log; 732 u_int8_t state_flags; 733 #define PFSTATE_ALLOWOPTS 0x01 734 #define PFSTATE_SLOPPY 0x02 735 /* was PFSTATE_PFLOW 0x04 */ 736 #define PFSTATE_NOSYNC 0x08 737 #define PFSTATE_ACK 0x10 738 u_int8_t timeout; 739 u_int8_t sync_state; /* PFSYNC_S_x */ 740 741 /* XXX */ 742 u_int8_t sync_updates; 743 u_int8_t _tail[3]; 744 }; 745 746 /* 747 * Unified state structures for pulling states out of the kernel 748 * used by pfsync(4) and the pf(4) ioctl. 749 */ 750 struct pfsync_state_scrub { 751 u_int16_t pfss_flags; 752 u_int8_t pfss_ttl; /* stashed TTL */ 753 #define PFSYNC_SCRUB_FLAG_VALID 0x01 754 u_int8_t scrub_flag; 755 u_int32_t pfss_ts_mod; /* timestamp modulation */ 756 } __packed; 757 758 struct pfsync_state_peer { 759 struct pfsync_state_scrub scrub; /* state is scrubbed */ 760 u_int32_t seqlo; /* Max sequence number sent */ 761 u_int32_t seqhi; /* Max the other end ACKd + win */ 762 u_int32_t seqdiff; /* Sequence number modulator */ 763 u_int16_t max_win; /* largest window (pre scaling) */ 764 u_int16_t mss; /* Maximum segment size option */ 765 u_int8_t state; /* active state level */ 766 u_int8_t wscale; /* window scaling factor */ 767 u_int8_t pad[6]; 768 } __packed; 769 770 struct pfsync_state_key { 771 struct pf_addr addr[2]; 772 u_int16_t port[2]; 773 }; 774 775 struct pfsync_state { 776 u_int64_t id; 777 char ifname[IFNAMSIZ]; 778 struct pfsync_state_key key[2]; 779 struct pfsync_state_peer src; 780 struct pfsync_state_peer dst; 781 struct pf_addr rt_addr; 782 u_int32_t rule; 783 u_int32_t anchor; 784 u_int32_t nat_rule; 785 u_int32_t creation; 786 u_int32_t expire; 787 u_int32_t packets[2][2]; 788 u_int32_t bytes[2][2]; 789 u_int32_t creatorid; 790 sa_family_t af; 791 u_int8_t proto; 792 u_int8_t direction; 793 u_int8_t __spare[2]; 794 u_int8_t log; 795 u_int8_t state_flags; 796 u_int8_t timeout; 797 u_int8_t sync_flags; 798 u_int8_t updates; 799 } __packed; 800 801 #ifdef _KERNEL 802 /* pfsync */ 803 typedef int pfsync_state_import_t(struct pfsync_state *, u_int8_t); 804 typedef void pfsync_insert_state_t(struct pf_state *); 805 typedef void pfsync_update_state_t(struct pf_state *); 806 typedef void pfsync_delete_state_t(struct pf_state *); 807 typedef void pfsync_clear_states_t(u_int32_t, const char *); 808 typedef int pfsync_defer_t(struct pf_state *, struct mbuf *); 809 810 extern pfsync_state_import_t *pfsync_state_import_ptr; 811 extern pfsync_insert_state_t *pfsync_insert_state_ptr; 812 extern pfsync_update_state_t *pfsync_update_state_ptr; 813 extern pfsync_delete_state_t *pfsync_delete_state_ptr; 814 extern pfsync_clear_states_t *pfsync_clear_states_ptr; 815 extern pfsync_defer_t *pfsync_defer_ptr; 816 817 void pfsync_state_export(struct pfsync_state *, 818 struct pf_state *); 819 820 /* pflog */ 821 struct pf_ruleset; 822 struct pf_pdesc; 823 typedef int pflog_packet_t(struct pfi_kif *, struct mbuf *, sa_family_t, 824 u_int8_t, u_int8_t, struct pf_rule *, struct pf_rule *, 825 struct pf_ruleset *, struct pf_pdesc *, int); 826 extern pflog_packet_t *pflog_packet_ptr; 827 828 #define V_pf_end_threads VNET(pf_end_threads) 829 #endif /* _KERNEL */ 830 831 #define PFSYNC_FLAG_SRCNODE 0x04 832 #define PFSYNC_FLAG_NATSRCNODE 0x08 833 834 /* for copies to/from network byte order */ 835 /* ioctl interface also uses network byte order */ 836 #define pf_state_peer_hton(s,d) do { \ 837 (d)->seqlo = htonl((s)->seqlo); \ 838 (d)->seqhi = htonl((s)->seqhi); \ 839 (d)->seqdiff = htonl((s)->seqdiff); \ 840 (d)->max_win = htons((s)->max_win); \ 841 (d)->mss = htons((s)->mss); \ 842 (d)->state = (s)->state; \ 843 (d)->wscale = (s)->wscale; \ 844 if ((s)->scrub) { \ 845 (d)->scrub.pfss_flags = \ 846 htons((s)->scrub->pfss_flags & PFSS_TIMESTAMP); \ 847 (d)->scrub.pfss_ttl = (s)->scrub->pfss_ttl; \ 848 (d)->scrub.pfss_ts_mod = htonl((s)->scrub->pfss_ts_mod);\ 849 (d)->scrub.scrub_flag = PFSYNC_SCRUB_FLAG_VALID; \ 850 } \ 851 } while (0) 852 853 #define pf_state_peer_ntoh(s,d) do { \ 854 (d)->seqlo = ntohl((s)->seqlo); \ 855 (d)->seqhi = ntohl((s)->seqhi); \ 856 (d)->seqdiff = ntohl((s)->seqdiff); \ 857 (d)->max_win = ntohs((s)->max_win); \ 858 (d)->mss = ntohs((s)->mss); \ 859 (d)->state = (s)->state; \ 860 (d)->wscale = (s)->wscale; \ 861 if ((s)->scrub.scrub_flag == PFSYNC_SCRUB_FLAG_VALID && \ 862 (d)->scrub != NULL) { \ 863 (d)->scrub->pfss_flags = \ 864 ntohs((s)->scrub.pfss_flags) & PFSS_TIMESTAMP; \ 865 (d)->scrub->pfss_ttl = (s)->scrub.pfss_ttl; \ 866 (d)->scrub->pfss_ts_mod = ntohl((s)->scrub.pfss_ts_mod);\ 867 } \ 868 } while (0) 869 870 #define pf_state_counter_hton(s,d) do { \ 871 d[0] = htonl((s>>32)&0xffffffff); \ 872 d[1] = htonl(s&0xffffffff); \ 873 } while (0) 874 875 #define pf_state_counter_from_pfsync(s) \ 876 (((u_int64_t)(s[0])<<32) | (u_int64_t)(s[1])) 877 878 #define pf_state_counter_ntoh(s,d) do { \ 879 d = ntohl(s[0]); \ 880 d = d<<32; \ 881 d += ntohl(s[1]); \ 882 } while (0) 883 884 TAILQ_HEAD(pf_rulequeue, pf_rule); 885 886 struct pf_anchor; 887 888 struct pf_ruleset { 889 struct { 890 struct pf_rulequeue queues[2]; 891 struct { 892 struct pf_rulequeue *ptr; 893 struct pf_rule **ptr_array; 894 u_int32_t rcount; 895 u_int32_t ticket; 896 int open; 897 } active, inactive; 898 } rules[PF_RULESET_MAX]; 899 struct pf_anchor *anchor; 900 u_int32_t tticket; 901 int tables; 902 int topen; 903 }; 904 905 RB_HEAD(pf_anchor_global, pf_anchor); 906 RB_HEAD(pf_anchor_node, pf_anchor); 907 struct pf_anchor { 908 RB_ENTRY(pf_anchor) entry_global; 909 RB_ENTRY(pf_anchor) entry_node; 910 struct pf_anchor *parent; 911 struct pf_anchor_node children; 912 char name[PF_ANCHOR_NAME_SIZE]; 913 char path[MAXPATHLEN]; 914 struct pf_ruleset ruleset; 915 int refcnt; /* anchor rules */ 916 int match; /* XXX: used for pfctl black magic */ 917 }; 918 RB_PROTOTYPE(pf_anchor_global, pf_anchor, entry_global, pf_anchor_compare); 919 RB_PROTOTYPE(pf_anchor_node, pf_anchor, entry_node, pf_anchor_compare); 920 921 #define PF_RESERVED_ANCHOR "_pf" 922 923 #define PFR_TFLAG_PERSIST 0x00000001 924 #define PFR_TFLAG_CONST 0x00000002 925 #define PFR_TFLAG_ACTIVE 0x00000004 926 #define PFR_TFLAG_INACTIVE 0x00000008 927 #define PFR_TFLAG_REFERENCED 0x00000010 928 #define PFR_TFLAG_REFDANCHOR 0x00000020 929 #define PFR_TFLAG_COUNTERS 0x00000040 930 /* Adjust masks below when adding flags. */ 931 #define PFR_TFLAG_USRMASK (PFR_TFLAG_PERSIST | \ 932 PFR_TFLAG_CONST | \ 933 PFR_TFLAG_COUNTERS) 934 #define PFR_TFLAG_SETMASK (PFR_TFLAG_ACTIVE | \ 935 PFR_TFLAG_INACTIVE | \ 936 PFR_TFLAG_REFERENCED | \ 937 PFR_TFLAG_REFDANCHOR) 938 #define PFR_TFLAG_ALLMASK (PFR_TFLAG_PERSIST | \ 939 PFR_TFLAG_CONST | \ 940 PFR_TFLAG_ACTIVE | \ 941 PFR_TFLAG_INACTIVE | \ 942 PFR_TFLAG_REFERENCED | \ 943 PFR_TFLAG_REFDANCHOR | \ 944 PFR_TFLAG_COUNTERS) 945 946 struct pf_anchor_stackframe; 947 948 struct pfr_table { 949 char pfrt_anchor[MAXPATHLEN]; 950 char pfrt_name[PF_TABLE_NAME_SIZE]; 951 u_int32_t pfrt_flags; 952 u_int8_t pfrt_fback; 953 }; 954 955 enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED, 956 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE, 957 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_NOCOUNT, PFR_FB_MAX }; 958 959 struct pfr_addr { 960 union { 961 struct in_addr _pfra_ip4addr; 962 struct in6_addr _pfra_ip6addr; 963 } pfra_u; 964 u_int8_t pfra_af; 965 u_int8_t pfra_net; 966 u_int8_t pfra_not; 967 u_int8_t pfra_fback; 968 }; 969 #define pfra_ip4addr pfra_u._pfra_ip4addr 970 #define pfra_ip6addr pfra_u._pfra_ip6addr 971 972 enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX }; 973 enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX }; 974 #define PFR_OP_XPASS PFR_OP_ADDR_MAX 975 976 struct pfr_astats { 977 struct pfr_addr pfras_a; 978 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 979 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 980 long pfras_tzero; 981 }; 982 983 enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX }; 984 985 struct pfr_tstats { 986 struct pfr_table pfrts_t; 987 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 988 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 989 u_int64_t pfrts_match; 990 u_int64_t pfrts_nomatch; 991 long pfrts_tzero; 992 int pfrts_cnt; 993 int pfrts_refcnt[PFR_REFCNT_MAX]; 994 }; 995 #define pfrts_name pfrts_t.pfrt_name 996 #define pfrts_flags pfrts_t.pfrt_flags 997 998 #ifndef _SOCKADDR_UNION_DEFINED 999 #define _SOCKADDR_UNION_DEFINED 1000 union sockaddr_union { 1001 struct sockaddr sa; 1002 struct sockaddr_in sin; 1003 struct sockaddr_in6 sin6; 1004 }; 1005 #endif /* _SOCKADDR_UNION_DEFINED */ 1006 1007 struct pfr_kcounters { 1008 u_int64_t pfrkc_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1009 u_int64_t pfrkc_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1010 }; 1011 1012 SLIST_HEAD(pfr_kentryworkq, pfr_kentry); 1013 struct pfr_kentry { 1014 struct radix_node pfrke_node[2]; 1015 union sockaddr_union pfrke_sa; 1016 SLIST_ENTRY(pfr_kentry) pfrke_workq; 1017 struct pfr_kcounters *pfrke_counters; 1018 long pfrke_tzero; 1019 u_int8_t pfrke_af; 1020 u_int8_t pfrke_net; 1021 u_int8_t pfrke_not; 1022 u_int8_t pfrke_mark; 1023 }; 1024 1025 SLIST_HEAD(pfr_ktableworkq, pfr_ktable); 1026 RB_HEAD(pfr_ktablehead, pfr_ktable); 1027 struct pfr_ktable { 1028 struct pfr_tstats pfrkt_ts; 1029 RB_ENTRY(pfr_ktable) pfrkt_tree; 1030 SLIST_ENTRY(pfr_ktable) pfrkt_workq; 1031 struct radix_node_head *pfrkt_ip4; 1032 struct radix_node_head *pfrkt_ip6; 1033 struct pfr_ktable *pfrkt_shadow; 1034 struct pfr_ktable *pfrkt_root; 1035 struct pf_ruleset *pfrkt_rs; 1036 long pfrkt_larg; 1037 int pfrkt_nflags; 1038 }; 1039 #define pfrkt_t pfrkt_ts.pfrts_t 1040 #define pfrkt_name pfrkt_t.pfrt_name 1041 #define pfrkt_anchor pfrkt_t.pfrt_anchor 1042 #define pfrkt_ruleset pfrkt_t.pfrt_ruleset 1043 #define pfrkt_flags pfrkt_t.pfrt_flags 1044 #define pfrkt_cnt pfrkt_ts.pfrts_cnt 1045 #define pfrkt_refcnt pfrkt_ts.pfrts_refcnt 1046 #define pfrkt_packets pfrkt_ts.pfrts_packets 1047 #define pfrkt_bytes pfrkt_ts.pfrts_bytes 1048 #define pfrkt_match pfrkt_ts.pfrts_match 1049 #define pfrkt_nomatch pfrkt_ts.pfrts_nomatch 1050 #define pfrkt_tzero pfrkt_ts.pfrts_tzero 1051 1052 /* keep synced with pfi_kif, used in RB_FIND */ 1053 struct pfi_kif_cmp { 1054 char pfik_name[IFNAMSIZ]; 1055 }; 1056 1057 struct pfi_kif { 1058 char pfik_name[IFNAMSIZ]; 1059 union { 1060 RB_ENTRY(pfi_kif) _pfik_tree; 1061 LIST_ENTRY(pfi_kif) _pfik_list; 1062 } _pfik_glue; 1063 #define pfik_tree _pfik_glue._pfik_tree 1064 #define pfik_list _pfik_glue._pfik_list 1065 u_int64_t pfik_packets[2][2][2]; 1066 u_int64_t pfik_bytes[2][2][2]; 1067 u_int32_t pfik_tzero; 1068 u_int pfik_flags; 1069 struct ifnet *pfik_ifp; 1070 struct ifg_group *pfik_group; 1071 u_int pfik_rulerefs; 1072 TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs; 1073 }; 1074 1075 #define PFI_IFLAG_REFS 0x0001 /* has state references */ 1076 #define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */ 1077 1078 struct pf_pdesc { 1079 struct { 1080 int done; 1081 uid_t uid; 1082 gid_t gid; 1083 } lookup; 1084 u_int64_t tot_len; /* Make Mickey money */ 1085 union { 1086 struct tcphdr *tcp; 1087 struct udphdr *udp; 1088 struct icmp *icmp; 1089 #ifdef INET6 1090 struct icmp6_hdr *icmp6; 1091 #endif /* INET6 */ 1092 void *any; 1093 } hdr; 1094 1095 struct pf_rule *nat_rule; /* nat/rdr rule applied to packet */ 1096 struct pf_addr *src; /* src address */ 1097 struct pf_addr *dst; /* dst address */ 1098 u_int16_t *sport; 1099 u_int16_t *dport; 1100 struct pf_mtag *pf_mtag; 1101 1102 u_int32_t p_len; /* total length of payload */ 1103 1104 u_int16_t *ip_sum; 1105 u_int16_t *proto_sum; 1106 u_int16_t flags; /* Let SCRUB trigger behavior in 1107 * state code. Easier than tags */ 1108 #define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */ 1109 #define PFDESC_IP_REAS 0x0002 /* IP frags would've been reassembled */ 1110 sa_family_t af; 1111 u_int8_t proto; 1112 u_int8_t tos; 1113 u_int8_t dir; /* direction */ 1114 u_int8_t sidx; /* key index for source */ 1115 u_int8_t didx; /* key index for destination */ 1116 }; 1117 1118 /* flags for RDR options */ 1119 #define PF_DPORT_RANGE 0x01 /* Dest port uses range */ 1120 #define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */ 1121 1122 /* Counters for other things we want to keep track of */ 1123 #define LCNT_STATES 0 /* states */ 1124 #define LCNT_SRCSTATES 1 /* max-src-states */ 1125 #define LCNT_SRCNODES 2 /* max-src-nodes */ 1126 #define LCNT_SRCCONN 3 /* max-src-conn */ 1127 #define LCNT_SRCCONNRATE 4 /* max-src-conn-rate */ 1128 #define LCNT_OVERLOAD_TABLE 5 /* entry added to overload table */ 1129 #define LCNT_OVERLOAD_FLUSH 6 /* state entries flushed */ 1130 #define LCNT_MAX 7 /* total+1 */ 1131 1132 #define LCNT_NAMES { \ 1133 "max states per rule", \ 1134 "max-src-states", \ 1135 "max-src-nodes", \ 1136 "max-src-conn", \ 1137 "max-src-conn-rate", \ 1138 "overload table insertion", \ 1139 "overload flush states", \ 1140 NULL \ 1141 } 1142 1143 /* UDP state enumeration */ 1144 #define PFUDPS_NO_TRAFFIC 0 1145 #define PFUDPS_SINGLE 1 1146 #define PFUDPS_MULTIPLE 2 1147 1148 #define PFUDPS_NSTATES 3 /* number of state levels */ 1149 1150 #define PFUDPS_NAMES { \ 1151 "NO_TRAFFIC", \ 1152 "SINGLE", \ 1153 "MULTIPLE", \ 1154 NULL \ 1155 } 1156 1157 /* Other protocol state enumeration */ 1158 #define PFOTHERS_NO_TRAFFIC 0 1159 #define PFOTHERS_SINGLE 1 1160 #define PFOTHERS_MULTIPLE 2 1161 1162 #define PFOTHERS_NSTATES 3 /* number of state levels */ 1163 1164 #define PFOTHERS_NAMES { \ 1165 "NO_TRAFFIC", \ 1166 "SINGLE", \ 1167 "MULTIPLE", \ 1168 NULL \ 1169 } 1170 1171 #define FCNT_STATE_SEARCH 0 1172 #define FCNT_STATE_INSERT 1 1173 #define FCNT_STATE_REMOVALS 2 1174 #define FCNT_MAX 3 1175 1176 #define SCNT_SRC_NODE_SEARCH 0 1177 #define SCNT_SRC_NODE_INSERT 1 1178 #define SCNT_SRC_NODE_REMOVALS 2 1179 #define SCNT_MAX 3 1180 1181 #define ACTION_SET(a, x) \ 1182 do { \ 1183 if ((a) != NULL) \ 1184 *(a) = (x); \ 1185 } while (0) 1186 1187 #define REASON_SET(a, x) \ 1188 do { \ 1189 if ((a) != NULL) \ 1190 *(a) = (x); \ 1191 if (x < PFRES_MAX) \ 1192 V_pf_status.counters[x]++; \ 1193 } while (0) 1194 1195 struct pf_status { 1196 u_int64_t counters[PFRES_MAX]; 1197 u_int64_t lcounters[LCNT_MAX]; /* limit counters */ 1198 u_int64_t fcounters[FCNT_MAX]; 1199 u_int64_t scounters[SCNT_MAX]; 1200 u_int64_t pcounters[2][2][3]; 1201 u_int64_t bcounters[2][2]; 1202 u_int32_t running; 1203 u_int32_t states; 1204 u_int32_t src_nodes; 1205 u_int32_t since; 1206 u_int32_t debug; 1207 u_int32_t hostid; 1208 char ifname[IFNAMSIZ]; 1209 u_int8_t pf_chksum[PF_MD5_DIGEST_LENGTH]; 1210 }; 1211 1212 struct pf_divert { 1213 union { 1214 struct in_addr ipv4; 1215 struct in6_addr ipv6; 1216 } addr; 1217 u_int16_t port; 1218 }; 1219 1220 #define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */ 1221 #define PFR_KENTRY_HIWAT 200000 /* Number of table entries */ 1222 1223 /* 1224 * ioctl parameter structures 1225 */ 1226 1227 struct pfioc_pooladdr { 1228 u_int32_t action; 1229 u_int32_t ticket; 1230 u_int32_t nr; 1231 u_int32_t r_num; 1232 u_int8_t r_action; 1233 u_int8_t r_last; 1234 u_int8_t af; 1235 char anchor[MAXPATHLEN]; 1236 struct pf_pooladdr addr; 1237 }; 1238 1239 struct pfioc_rule { 1240 u_int32_t action; 1241 u_int32_t ticket; 1242 u_int32_t pool_ticket; 1243 u_int32_t nr; 1244 char anchor[MAXPATHLEN]; 1245 char anchor_call[MAXPATHLEN]; 1246 struct pf_rule rule; 1247 }; 1248 1249 struct pfioc_natlook { 1250 struct pf_addr saddr; 1251 struct pf_addr daddr; 1252 struct pf_addr rsaddr; 1253 struct pf_addr rdaddr; 1254 u_int16_t sport; 1255 u_int16_t dport; 1256 u_int16_t rsport; 1257 u_int16_t rdport; 1258 sa_family_t af; 1259 u_int8_t proto; 1260 u_int8_t direction; 1261 }; 1262 1263 struct pfioc_state { 1264 struct pfsync_state state; 1265 }; 1266 1267 struct pfioc_src_node_kill { 1268 sa_family_t psnk_af; 1269 struct pf_rule_addr psnk_src; 1270 struct pf_rule_addr psnk_dst; 1271 u_int psnk_killed; 1272 }; 1273 1274 struct pfioc_state_kill { 1275 struct pf_state_cmp psk_pfcmp; 1276 sa_family_t psk_af; 1277 int psk_proto; 1278 struct pf_rule_addr psk_src; 1279 struct pf_rule_addr psk_dst; 1280 char psk_ifname[IFNAMSIZ]; 1281 char psk_label[PF_RULE_LABEL_SIZE]; 1282 u_int psk_killed; 1283 }; 1284 1285 struct pfioc_states { 1286 int ps_len; 1287 union { 1288 caddr_t psu_buf; 1289 struct pfsync_state *psu_states; 1290 } ps_u; 1291 #define ps_buf ps_u.psu_buf 1292 #define ps_states ps_u.psu_states 1293 }; 1294 1295 struct pfioc_src_nodes { 1296 int psn_len; 1297 union { 1298 caddr_t psu_buf; 1299 struct pf_src_node *psu_src_nodes; 1300 } psn_u; 1301 #define psn_buf psn_u.psu_buf 1302 #define psn_src_nodes psn_u.psu_src_nodes 1303 }; 1304 1305 struct pfioc_if { 1306 char ifname[IFNAMSIZ]; 1307 }; 1308 1309 struct pfioc_tm { 1310 int timeout; 1311 int seconds; 1312 }; 1313 1314 struct pfioc_limit { 1315 int index; 1316 unsigned limit; 1317 }; 1318 1319 struct pfioc_altq { 1320 u_int32_t action; 1321 u_int32_t ticket; 1322 u_int32_t nr; 1323 struct pf_altq altq; 1324 }; 1325 1326 struct pfioc_qstats { 1327 u_int32_t ticket; 1328 u_int32_t nr; 1329 void *buf; 1330 int nbytes; 1331 u_int8_t scheduler; 1332 }; 1333 1334 struct pfioc_ruleset { 1335 u_int32_t nr; 1336 char path[MAXPATHLEN]; 1337 char name[PF_ANCHOR_NAME_SIZE]; 1338 }; 1339 1340 #define PF_RULESET_ALTQ (PF_RULESET_MAX) 1341 #define PF_RULESET_TABLE (PF_RULESET_MAX+1) 1342 struct pfioc_trans { 1343 int size; /* number of elements */ 1344 int esize; /* size of each element in bytes */ 1345 struct pfioc_trans_e { 1346 int rs_num; 1347 char anchor[MAXPATHLEN]; 1348 u_int32_t ticket; 1349 } *array; 1350 }; 1351 1352 #define PFR_FLAG_ATOMIC 0x00000001 /* unused */ 1353 #define PFR_FLAG_DUMMY 0x00000002 1354 #define PFR_FLAG_FEEDBACK 0x00000004 1355 #define PFR_FLAG_CLSTATS 0x00000008 1356 #define PFR_FLAG_ADDRSTOO 0x00000010 1357 #define PFR_FLAG_REPLACE 0x00000020 1358 #define PFR_FLAG_ALLRSETS 0x00000040 1359 #define PFR_FLAG_ALLMASK 0x0000007F 1360 #ifdef _KERNEL 1361 #define PFR_FLAG_USERIOCTL 0x10000000 1362 #endif 1363 1364 struct pfioc_table { 1365 struct pfr_table pfrio_table; 1366 void *pfrio_buffer; 1367 int pfrio_esize; 1368 int pfrio_size; 1369 int pfrio_size2; 1370 int pfrio_nadd; 1371 int pfrio_ndel; 1372 int pfrio_nchange; 1373 int pfrio_flags; 1374 u_int32_t pfrio_ticket; 1375 }; 1376 #define pfrio_exists pfrio_nadd 1377 #define pfrio_nzero pfrio_nadd 1378 #define pfrio_nmatch pfrio_nadd 1379 #define pfrio_naddr pfrio_size2 1380 #define pfrio_setflag pfrio_size2 1381 #define pfrio_clrflag pfrio_nadd 1382 1383 struct pfioc_iface { 1384 char pfiio_name[IFNAMSIZ]; 1385 void *pfiio_buffer; 1386 int pfiio_esize; 1387 int pfiio_size; 1388 int pfiio_nzero; 1389 int pfiio_flags; 1390 }; 1391 1392 1393 /* 1394 * ioctl operations 1395 */ 1396 1397 #define DIOCSTART _IO ('D', 1) 1398 #define DIOCSTOP _IO ('D', 2) 1399 #define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule) 1400 #define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule) 1401 #define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule) 1402 /* XXX cut 8 - 17 */ 1403 #define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill) 1404 #define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state) 1405 #define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if) 1406 #define DIOCGETSTATUS _IOWR('D', 21, struct pf_status) 1407 #define DIOCCLRSTATUS _IO ('D', 22) 1408 #define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook) 1409 #define DIOCSETDEBUG _IOWR('D', 24, u_int32_t) 1410 #define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states) 1411 #define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule) 1412 /* XXX cut 26 - 28 */ 1413 #define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm) 1414 #define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm) 1415 #define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state) 1416 #define DIOCCLRRULECTRS _IO ('D', 38) 1417 #define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit) 1418 #define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit) 1419 #define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill) 1420 #define DIOCSTARTALTQ _IO ('D', 42) 1421 #define DIOCSTOPALTQ _IO ('D', 43) 1422 #define DIOCADDALTQ _IOWR('D', 45, struct pfioc_altq) 1423 #define DIOCGETALTQS _IOWR('D', 47, struct pfioc_altq) 1424 #define DIOCGETALTQ _IOWR('D', 48, struct pfioc_altq) 1425 #define DIOCCHANGEALTQ _IOWR('D', 49, struct pfioc_altq) 1426 #define DIOCGETQSTATS _IOWR('D', 50, struct pfioc_qstats) 1427 #define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr) 1428 #define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr) 1429 #define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr) 1430 #define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr) 1431 #define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr) 1432 /* XXX cut 55 - 57 */ 1433 #define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset) 1434 #define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset) 1435 #define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table) 1436 #define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table) 1437 #define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table) 1438 #define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table) 1439 #define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table) 1440 #define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table) 1441 #define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table) 1442 #define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table) 1443 #define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table) 1444 #define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table) 1445 #define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table) 1446 #define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table) 1447 #define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table) 1448 #define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table) 1449 #define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table) 1450 #define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table) 1451 #define DIOCOSFPFLUSH _IO('D', 78) 1452 #define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl) 1453 #define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl) 1454 #define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans) 1455 #define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans) 1456 #define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans) 1457 #define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes) 1458 #define DIOCCLRSRCNODES _IO('D', 85) 1459 #define DIOCSETHOSTID _IOWR('D', 86, u_int32_t) 1460 #define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface) 1461 #define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface) 1462 #define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface) 1463 #define DIOCKILLSRCNODES _IOWR('D', 91, struct pfioc_src_node_kill) 1464 struct pf_ifspeed { 1465 char ifname[IFNAMSIZ]; 1466 u_int32_t baudrate; 1467 }; 1468 #define DIOCGIFSPEED _IOWR('D', 92, struct pf_ifspeed) 1469 1470 #ifdef _KERNEL 1471 LIST_HEAD(pf_src_node_list, pf_src_node); 1472 struct pf_srchash { 1473 struct pf_src_node_list nodes; 1474 struct mtx lock; 1475 }; 1476 1477 struct pf_keyhash { 1478 LIST_HEAD(, pf_state_key) keys; 1479 struct mtx lock; 1480 }; 1481 1482 struct pf_idhash { 1483 LIST_HEAD(, pf_state) states; 1484 struct mtx lock; 1485 }; 1486 1487 #define PF_HASHSIZ (32768) 1488 VNET_DECLARE(struct pf_keyhash *, pf_keyhash); 1489 VNET_DECLARE(struct pf_idhash *, pf_idhash); 1490 VNET_DECLARE(u_long, pf_hashmask); 1491 #define V_pf_keyhash VNET(pf_keyhash) 1492 #define V_pf_idhash VNET(pf_idhash) 1493 #define V_pf_hashmask VNET(pf_hashmask) 1494 VNET_DECLARE(struct pf_srchash *, pf_srchash); 1495 VNET_DECLARE(u_long, pf_srchashmask); 1496 #define V_pf_srchash VNET(pf_srchash) 1497 #define V_pf_srchashmask VNET(pf_srchashmask) 1498 1499 #define PF_IDHASH(s) (be64toh((s)->id) % (V_pf_hashmask + 1)) 1500 1501 VNET_DECLARE(void *, pf_swi_cookie); 1502 #define V_pf_swi_cookie VNET(pf_swi_cookie) 1503 1504 VNET_DECLARE(uint64_t, pf_stateid[MAXCPU]); 1505 #define V_pf_stateid VNET(pf_stateid) 1506 1507 TAILQ_HEAD(pf_altqqueue, pf_altq); 1508 VNET_DECLARE(struct pf_altqqueue, pf_altqs[2]); 1509 #define V_pf_altqs VNET(pf_altqs) 1510 VNET_DECLARE(struct pf_palist, pf_pabuf); 1511 #define V_pf_pabuf VNET(pf_pabuf) 1512 1513 VNET_DECLARE(u_int32_t, ticket_altqs_active); 1514 #define V_ticket_altqs_active VNET(ticket_altqs_active) 1515 VNET_DECLARE(u_int32_t, ticket_altqs_inactive); 1516 #define V_ticket_altqs_inactive VNET(ticket_altqs_inactive) 1517 VNET_DECLARE(int, altqs_inactive_open); 1518 #define V_altqs_inactive_open VNET(altqs_inactive_open) 1519 VNET_DECLARE(u_int32_t, ticket_pabuf); 1520 #define V_ticket_pabuf VNET(ticket_pabuf) 1521 VNET_DECLARE(struct pf_altqqueue *, pf_altqs_active); 1522 #define V_pf_altqs_active VNET(pf_altqs_active) 1523 VNET_DECLARE(struct pf_altqqueue *, pf_altqs_inactive); 1524 #define V_pf_altqs_inactive VNET(pf_altqs_inactive) 1525 1526 VNET_DECLARE(struct pf_rulequeue, pf_unlinked_rules); 1527 #define V_pf_unlinked_rules VNET(pf_unlinked_rules) 1528 1529 void pf_initialize(void); 1530 void pf_cleanup(void); 1531 1532 struct pf_mtag *pf_get_mtag(struct mbuf *); 1533 1534 extern void pf_calc_skip_steps(struct pf_rulequeue *); 1535 #ifdef ALTQ 1536 extern void pf_altq_ifnet_event(struct ifnet *, int); 1537 #endif 1538 VNET_DECLARE(uma_zone_t, pf_state_z); 1539 #define V_pf_state_z VNET(pf_state_z) 1540 VNET_DECLARE(uma_zone_t, pf_state_key_z); 1541 #define V_pf_state_key_z VNET(pf_state_key_z) 1542 VNET_DECLARE(uma_zone_t, pf_state_scrub_z); 1543 #define V_pf_state_scrub_z VNET(pf_state_scrub_z) 1544 1545 extern void pf_purge_thread(void *); 1546 extern void pf_intr(void *); 1547 extern void pf_purge_expired_src_nodes(void); 1548 1549 extern int pf_unlink_state(struct pf_state *, u_int); 1550 #define PF_ENTER_LOCKED 0x00000001 1551 #define PF_RETURN_LOCKED 0x00000002 1552 extern int pf_state_insert(struct pfi_kif *, 1553 struct pf_state_key *, 1554 struct pf_state_key *, 1555 struct pf_state *); 1556 extern void pf_free_state(struct pf_state *); 1557 1558 static __inline void 1559 pf_ref_state(struct pf_state *s) 1560 { 1561 1562 refcount_acquire(&s->refs); 1563 } 1564 1565 static __inline int 1566 pf_release_state(struct pf_state *s) 1567 { 1568 1569 if (refcount_release(&s->refs)) { 1570 pf_free_state(s); 1571 return (1); 1572 } else 1573 return (0); 1574 } 1575 1576 extern struct pf_state *pf_find_state_byid(uint64_t, uint32_t); 1577 extern struct pf_state *pf_find_state_all(struct pf_state_key_cmp *, 1578 u_int, int *); 1579 extern struct pf_src_node *pf_find_src_node(struct pf_addr *, 1580 struct pf_rule *, sa_family_t, int); 1581 extern void pf_unlink_src_node(struct pf_src_node *); 1582 extern void pf_unlink_src_node_locked(struct pf_src_node *); 1583 extern u_int pf_free_src_nodes(struct pf_src_node_list *); 1584 extern void pf_print_state(struct pf_state *); 1585 extern void pf_print_flags(u_int8_t); 1586 extern u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t, 1587 u_int8_t); 1588 1589 VNET_DECLARE(struct ifnet *, sync_ifp); 1590 #define V_sync_ifp VNET(sync_ifp); 1591 VNET_DECLARE(struct pf_rule, pf_default_rule); 1592 #define V_pf_default_rule VNET(pf_default_rule) 1593 extern void pf_addrcpy(struct pf_addr *, struct pf_addr *, 1594 u_int8_t); 1595 void pf_free_rule(struct pf_rule *); 1596 1597 #ifdef INET 1598 int pf_test(int, struct ifnet *, struct mbuf **, struct inpcb *); 1599 #endif /* INET */ 1600 1601 #ifdef INET6 1602 int pf_test6(int, struct ifnet *, struct mbuf **, struct inpcb *); 1603 void pf_poolmask(struct pf_addr *, struct pf_addr*, 1604 struct pf_addr *, struct pf_addr *, u_int8_t); 1605 void pf_addr_inc(struct pf_addr *, sa_family_t); 1606 #endif /* INET6 */ 1607 1608 u_int32_t pf_new_isn(struct pf_state *); 1609 void *pf_pull_hdr(struct mbuf *, int, void *, int, u_short *, u_short *, 1610 sa_family_t); 1611 void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t); 1612 void pf_send_deferred_syn(struct pf_state *); 1613 int pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *, 1614 struct pf_addr *, sa_family_t); 1615 int pf_match_addr_range(struct pf_addr *, struct pf_addr *, 1616 struct pf_addr *, sa_family_t); 1617 int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t); 1618 1619 void pf_normalize_init(void); 1620 void pf_normalize_cleanup(void); 1621 int pf_normalize_ip(struct mbuf **, int, struct pfi_kif *, u_short *, 1622 struct pf_pdesc *); 1623 int pf_normalize_ip6(struct mbuf **, int, struct pfi_kif *, u_short *, 1624 struct pf_pdesc *); 1625 int pf_normalize_tcp(int, struct pfi_kif *, struct mbuf *, int, int, void *, 1626 struct pf_pdesc *); 1627 void pf_normalize_tcp_cleanup(struct pf_state *); 1628 int pf_normalize_tcp_init(struct mbuf *, int, struct pf_pdesc *, 1629 struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *); 1630 int pf_normalize_tcp_stateful(struct mbuf *, int, struct pf_pdesc *, 1631 u_short *, struct tcphdr *, struct pf_state *, 1632 struct pf_state_peer *, struct pf_state_peer *, int *); 1633 u_int32_t 1634 pf_state_expires(const struct pf_state *); 1635 void pf_purge_expired_fragments(void); 1636 int pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kif *, 1637 int); 1638 int pf_socket_lookup(int, struct pf_pdesc *, struct mbuf *); 1639 struct pf_state_key *pf_alloc_state_key(int); 1640 void pfr_initialize(void); 1641 void pfr_cleanup(void); 1642 int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t); 1643 void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t, 1644 u_int64_t, int, int, int); 1645 int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, sa_family_t); 1646 void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *); 1647 struct pfr_ktable * 1648 pfr_attach_table(struct pf_ruleset *, char *); 1649 void pfr_detach_table(struct pfr_ktable *); 1650 int pfr_clr_tables(struct pfr_table *, int *, int); 1651 int pfr_add_tables(struct pfr_table *, int, int *, int); 1652 int pfr_del_tables(struct pfr_table *, int, int *, int); 1653 int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int); 1654 int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int); 1655 int pfr_clr_tstats(struct pfr_table *, int, int *, int); 1656 int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int); 1657 int pfr_clr_addrs(struct pfr_table *, int *, int); 1658 int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *, long); 1659 int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1660 int); 1661 int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1662 int); 1663 int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1664 int *, int *, int *, int, u_int32_t); 1665 int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int); 1666 int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int); 1667 int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *, 1668 int); 1669 int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1670 int); 1671 int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int); 1672 int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int); 1673 int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int); 1674 int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *, 1675 int *, u_int32_t, int); 1676 1677 MALLOC_DECLARE(PFI_MTYPE); 1678 VNET_DECLARE(struct pfi_kif *, pfi_all); 1679 #define V_pfi_all VNET(pfi_all) 1680 1681 void pfi_initialize(void); 1682 void pfi_cleanup(void); 1683 void pfi_kif_ref(struct pfi_kif *); 1684 void pfi_kif_unref(struct pfi_kif *); 1685 struct pfi_kif *pfi_kif_find(const char *); 1686 struct pfi_kif *pfi_kif_attach(struct pfi_kif *, const char *); 1687 int pfi_kif_match(struct pfi_kif *, struct pfi_kif *); 1688 void pfi_kif_purge(void); 1689 int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *, 1690 sa_family_t); 1691 int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t); 1692 void pfi_dynaddr_remove(struct pfi_dynaddr *); 1693 void pfi_dynaddr_copyout(struct pf_addr_wrap *); 1694 void pfi_update_status(const char *, struct pf_status *); 1695 void pfi_get_ifaces(const char *, struct pfi_kif *, int *); 1696 int pfi_set_flags(const char *, int); 1697 int pfi_clear_flags(const char *, int); 1698 1699 int pf_match_tag(struct mbuf *, struct pf_rule *, int *, int); 1700 int pf_tag_packet(struct mbuf *, struct pf_pdesc *, int); 1701 void pf_qid2qname(u_int32_t, char *); 1702 1703 VNET_DECLARE(struct pf_status, pf_status); 1704 #define V_pf_status VNET(pf_status) 1705 1706 struct pf_limit { 1707 uma_zone_t zone; 1708 u_int limit; 1709 }; 1710 VNET_DECLARE(struct pf_limit, pf_limits[PF_LIMIT_MAX]); 1711 #define V_pf_limits VNET(pf_limits) 1712 1713 #endif /* _KERNEL */ 1714 1715 #ifdef _KERNEL 1716 VNET_DECLARE(struct pf_anchor_global, pf_anchors); 1717 #define V_pf_anchors VNET(pf_anchors) 1718 VNET_DECLARE(struct pf_anchor, pf_main_anchor); 1719 #define V_pf_main_anchor VNET(pf_main_anchor) 1720 #define pf_main_ruleset V_pf_main_anchor.ruleset 1721 #endif 1722 1723 /* these ruleset functions can be linked into userland programs (pfctl) */ 1724 int pf_get_ruleset_number(u_int8_t); 1725 void pf_init_ruleset(struct pf_ruleset *); 1726 int pf_anchor_setup(struct pf_rule *, 1727 const struct pf_ruleset *, const char *); 1728 int pf_anchor_copyout(const struct pf_ruleset *, 1729 const struct pf_rule *, struct pfioc_rule *); 1730 void pf_anchor_remove(struct pf_rule *); 1731 void pf_remove_if_empty_ruleset(struct pf_ruleset *); 1732 struct pf_ruleset *pf_find_ruleset(const char *); 1733 struct pf_ruleset *pf_find_or_create_ruleset(const char *); 1734 void pf_rs_initialize(void); 1735 1736 /* The fingerprint functions can be linked into userland programs (tcpdump) */ 1737 int pf_osfp_add(struct pf_osfp_ioctl *); 1738 #ifdef _KERNEL 1739 struct pf_osfp_enlist * 1740 pf_osfp_fingerprint(struct pf_pdesc *, struct mbuf *, int, 1741 const struct tcphdr *); 1742 #endif /* _KERNEL */ 1743 void pf_osfp_flush(void); 1744 int pf_osfp_get(struct pf_osfp_ioctl *); 1745 int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t); 1746 1747 #ifdef _KERNEL 1748 void pf_print_host(struct pf_addr *, u_int16_t, u_int8_t); 1749 1750 void pf_step_into_anchor(struct pf_anchor_stackframe *, int *, 1751 struct pf_ruleset **, int, struct pf_rule **, 1752 struct pf_rule **, int *); 1753 int pf_step_out_of_anchor(struct pf_anchor_stackframe *, int *, 1754 struct pf_ruleset **, int, struct pf_rule **, 1755 struct pf_rule **, int *); 1756 1757 int pf_map_addr(u_int8_t, struct pf_rule *, 1758 struct pf_addr *, struct pf_addr *, 1759 struct pf_addr *, struct pf_src_node **); 1760 struct pf_rule *pf_get_translation(struct pf_pdesc *, struct mbuf *, 1761 int, int, struct pfi_kif *, struct pf_src_node **, 1762 struct pf_state_key **, struct pf_state_key **, 1763 struct pf_addr *, struct pf_addr *, 1764 uint16_t, uint16_t, struct pf_anchor_stackframe *); 1765 1766 struct pf_state_key *pf_state_key_setup(struct pf_pdesc *, struct pf_addr *, 1767 struct pf_addr *, u_int16_t, u_int16_t); 1768 struct pf_state_key *pf_state_key_clone(struct pf_state_key *); 1769 #endif /* _KERNEL */ 1770 1771 #endif /* _NET_PFVAR_H_ */ 1772