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/malloc.h> 40 #include <sys/refcount.h> 41 #include <sys/tree.h> 42 #include <vm/uma.h> 43 44 #include <net/radix.h> 45 #include <netinet/in.h> 46 47 #include <netpfil/pf/pf.h> 48 #include <netpfil/pf/pf_altq.h> 49 #include <netpfil/pf/pf_mtag.h> 50 51 struct pf_addr { 52 union { 53 struct in_addr v4; 54 struct in6_addr v6; 55 u_int8_t addr8[16]; 56 u_int16_t addr16[8]; 57 u_int32_t addr32[4]; 58 } pfa; /* 128-bit address */ 59 #define v4 pfa.v4 60 #define v6 pfa.v6 61 #define addr8 pfa.addr8 62 #define addr16 pfa.addr16 63 #define addr32 pfa.addr32 64 }; 65 66 #define PFI_AFLAG_NETWORK 0x01 67 #define PFI_AFLAG_BROADCAST 0x02 68 #define PFI_AFLAG_PEER 0x04 69 #define PFI_AFLAG_MODEMASK 0x07 70 #define PFI_AFLAG_NOALIAS 0x08 71 72 struct pf_addr_wrap { 73 union { 74 struct { 75 struct pf_addr addr; 76 struct pf_addr mask; 77 } a; 78 char ifname[IFNAMSIZ]; 79 char tblname[PF_TABLE_NAME_SIZE]; 80 } v; 81 union { 82 struct pfi_dynaddr *dyn; 83 struct pfr_ktable *tbl; 84 int dyncnt; 85 int tblcnt; 86 } p; 87 u_int8_t type; /* PF_ADDR_* */ 88 u_int8_t iflags; /* PFI_AFLAG_* */ 89 }; 90 91 #ifdef _KERNEL 92 93 struct pfi_dynaddr { 94 TAILQ_ENTRY(pfi_dynaddr) entry; 95 struct pf_addr pfid_addr4; 96 struct pf_addr pfid_mask4; 97 struct pf_addr pfid_addr6; 98 struct pf_addr pfid_mask6; 99 struct pfr_ktable *pfid_kt; 100 struct pfi_kif *pfid_kif; 101 int pfid_net; /* mask or 128 */ 102 int pfid_acnt4; /* address count IPv4 */ 103 int pfid_acnt6; /* address count IPv6 */ 104 sa_family_t pfid_af; /* rule af */ 105 u_int8_t pfid_iflags; /* PFI_AFLAG_* */ 106 }; 107 108 /* 109 * Address manipulation macros 110 */ 111 #define HTONL(x) (x) = htonl((__uint32_t)(x)) 112 #define HTONS(x) (x) = htons((__uint16_t)(x)) 113 #define NTOHL(x) (x) = ntohl((__uint32_t)(x)) 114 #define NTOHS(x) (x) = ntohs((__uint16_t)(x)) 115 116 #define PF_NAME "pf" 117 118 #define PF_HASHROW_ASSERT(h) mtx_assert(&(h)->lock, MA_OWNED) 119 #define PF_HASHROW_LOCK(h) mtx_lock(&(h)->lock) 120 #define PF_HASHROW_UNLOCK(h) mtx_unlock(&(h)->lock) 121 122 #define PF_STATE_LOCK(s) \ 123 do { \ 124 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(s)]; \ 125 PF_HASHROW_LOCK(_ih); \ 126 } while (0) 127 128 #define PF_STATE_UNLOCK(s) \ 129 do { \ 130 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH((s))]; \ 131 PF_HASHROW_UNLOCK(_ih); \ 132 } while (0) 133 134 #ifdef INVARIANTS 135 #define PF_STATE_LOCK_ASSERT(s) \ 136 do { \ 137 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(s)]; \ 138 PF_HASHROW_ASSERT(_ih); \ 139 } while (0) 140 #else /* !INVARIANTS */ 141 #define PF_STATE_LOCK_ASSERT(s) do {} while (0) 142 #endif /* INVARIANTS */ 143 144 extern struct mtx pf_unlnkdrules_mtx; 145 #define PF_UNLNKDRULES_LOCK() mtx_lock(&pf_unlnkdrules_mtx) 146 #define PF_UNLNKDRULES_UNLOCK() mtx_unlock(&pf_unlnkdrules_mtx) 147 148 extern struct rwlock pf_rules_lock; 149 #define PF_RULES_RLOCK() rw_rlock(&pf_rules_lock) 150 #define PF_RULES_RUNLOCK() rw_runlock(&pf_rules_lock) 151 #define PF_RULES_WLOCK() rw_wlock(&pf_rules_lock) 152 #define PF_RULES_WUNLOCK() rw_wunlock(&pf_rules_lock) 153 #define PF_RULES_ASSERT() rw_assert(&pf_rules_lock, RA_LOCKED) 154 #define PF_RULES_RASSERT() rw_assert(&pf_rules_lock, RA_RLOCKED) 155 #define PF_RULES_WASSERT() rw_assert(&pf_rules_lock, RA_WLOCKED) 156 157 #define PF_MODVER 1 158 #define PFLOG_MODVER 1 159 #define PFSYNC_MODVER 1 160 161 #define PFLOG_MINVER 1 162 #define PFLOG_PREFVER PFLOG_MODVER 163 #define PFLOG_MAXVER 1 164 #define PFSYNC_MINVER 1 165 #define PFSYNC_PREFVER PFSYNC_MODVER 166 #define PFSYNC_MAXVER 1 167 168 #ifdef INET 169 #ifndef INET6 170 #define PF_INET_ONLY 171 #endif /* ! INET6 */ 172 #endif /* INET */ 173 174 #ifdef INET6 175 #ifndef INET 176 #define PF_INET6_ONLY 177 #endif /* ! INET */ 178 #endif /* INET6 */ 179 180 #ifdef INET 181 #ifdef INET6 182 #define PF_INET_INET6 183 #endif /* INET6 */ 184 #endif /* INET */ 185 186 #else 187 188 #define PF_INET_INET6 189 190 #endif /* _KERNEL */ 191 192 /* Both IPv4 and IPv6 */ 193 #ifdef PF_INET_INET6 194 195 #define PF_AEQ(a, b, c) \ 196 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \ 197 (c == AF_INET6 && (a)->addr32[3] == (b)->addr32[3] && \ 198 (a)->addr32[2] == (b)->addr32[2] && \ 199 (a)->addr32[1] == (b)->addr32[1] && \ 200 (a)->addr32[0] == (b)->addr32[0])) \ 201 202 #define PF_ANEQ(a, b, c) \ 203 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \ 204 (c == AF_INET6 && ((a)->addr32[0] != (b)->addr32[0] || \ 205 (a)->addr32[1] != (b)->addr32[1] || \ 206 (a)->addr32[2] != (b)->addr32[2] || \ 207 (a)->addr32[3] != (b)->addr32[3]))) \ 208 209 #define PF_AZERO(a, c) \ 210 ((c == AF_INET && !(a)->addr32[0]) || \ 211 (c == AF_INET6 && !(a)->addr32[0] && !(a)->addr32[1] && \ 212 !(a)->addr32[2] && !(a)->addr32[3] )) \ 213 214 #define PF_MATCHA(n, a, m, b, f) \ 215 pf_match_addr(n, a, m, b, f) 216 217 #define PF_ACPY(a, b, f) \ 218 pf_addrcpy(a, b, f) 219 220 #define PF_AINC(a, f) \ 221 pf_addr_inc(a, f) 222 223 #define PF_POOLMASK(a, b, c, d, f) \ 224 pf_poolmask(a, b, c, d, f) 225 226 #else 227 228 /* Just IPv6 */ 229 230 #ifdef PF_INET6_ONLY 231 232 #define PF_AEQ(a, b, c) \ 233 ((a)->addr32[3] == (b)->addr32[3] && \ 234 (a)->addr32[2] == (b)->addr32[2] && \ 235 (a)->addr32[1] == (b)->addr32[1] && \ 236 (a)->addr32[0] == (b)->addr32[0]) \ 237 238 #define PF_ANEQ(a, b, c) \ 239 ((a)->addr32[3] != (b)->addr32[3] || \ 240 (a)->addr32[2] != (b)->addr32[2] || \ 241 (a)->addr32[1] != (b)->addr32[1] || \ 242 (a)->addr32[0] != (b)->addr32[0]) \ 243 244 #define PF_AZERO(a, c) \ 245 (!(a)->addr32[0] && \ 246 !(a)->addr32[1] && \ 247 !(a)->addr32[2] && \ 248 !(a)->addr32[3] ) \ 249 250 #define PF_MATCHA(n, a, m, b, f) \ 251 pf_match_addr(n, a, m, b, f) 252 253 #define PF_ACPY(a, b, f) \ 254 pf_addrcpy(a, b, f) 255 256 #define PF_AINC(a, f) \ 257 pf_addr_inc(a, f) 258 259 #define PF_POOLMASK(a, b, c, d, f) \ 260 pf_poolmask(a, b, c, d, f) 261 262 #else 263 264 /* Just IPv4 */ 265 #ifdef PF_INET_ONLY 266 267 #define PF_AEQ(a, b, c) \ 268 ((a)->addr32[0] == (b)->addr32[0]) 269 270 #define PF_ANEQ(a, b, c) \ 271 ((a)->addr32[0] != (b)->addr32[0]) 272 273 #define PF_AZERO(a, c) \ 274 (!(a)->addr32[0]) 275 276 #define PF_MATCHA(n, a, m, b, f) \ 277 pf_match_addr(n, a, m, b, f) 278 279 #define PF_ACPY(a, b, f) \ 280 (a)->v4.s_addr = (b)->v4.s_addr 281 282 #define PF_AINC(a, f) \ 283 do { \ 284 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \ 285 } while (0) 286 287 #define PF_POOLMASK(a, b, c, d, f) \ 288 do { \ 289 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \ 290 (((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \ 291 } while (0) 292 293 #endif /* PF_INET_ONLY */ 294 #endif /* PF_INET6_ONLY */ 295 #endif /* PF_INET_INET6 */ 296 297 /* 298 * XXX callers not FIB-aware in our version of pf yet. 299 * OpenBSD fixed it later it seems, 2010/05/07 13:33:16 claudio. 300 */ 301 #define PF_MISMATCHAW(aw, x, af, neg, ifp, rtid) \ 302 ( \ 303 (((aw)->type == PF_ADDR_NOROUTE && \ 304 pf_routable((x), (af), NULL, (rtid))) || \ 305 (((aw)->type == PF_ADDR_URPFFAILED && (ifp) != NULL && \ 306 pf_routable((x), (af), (ifp), (rtid))) || \ 307 ((aw)->type == PF_ADDR_TABLE && \ 308 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \ 309 ((aw)->type == PF_ADDR_DYNIFTL && \ 310 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \ 311 ((aw)->type == PF_ADDR_RANGE && \ 312 !pf_match_addr_range(&(aw)->v.a.addr, \ 313 &(aw)->v.a.mask, (x), (af))) || \ 314 ((aw)->type == PF_ADDR_ADDRMASK && \ 315 !PF_AZERO(&(aw)->v.a.mask, (af)) && \ 316 !PF_MATCHA(0, &(aw)->v.a.addr, \ 317 &(aw)->v.a.mask, (x), (af))))) != \ 318 (neg) \ 319 ) 320 321 322 struct pf_rule_uid { 323 uid_t uid[2]; 324 u_int8_t op; 325 }; 326 327 struct pf_rule_gid { 328 uid_t gid[2]; 329 u_int8_t op; 330 }; 331 332 struct pf_rule_addr { 333 struct pf_addr_wrap addr; 334 u_int16_t port[2]; 335 u_int8_t neg; 336 u_int8_t port_op; 337 }; 338 339 struct pf_pooladdr { 340 struct pf_addr_wrap addr; 341 TAILQ_ENTRY(pf_pooladdr) entries; 342 char ifname[IFNAMSIZ]; 343 struct pfi_kif *kif; 344 }; 345 346 TAILQ_HEAD(pf_palist, pf_pooladdr); 347 348 struct pf_poolhashkey { 349 union { 350 u_int8_t key8[16]; 351 u_int16_t key16[8]; 352 u_int32_t key32[4]; 353 } pfk; /* 128-bit hash key */ 354 #define key8 pfk.key8 355 #define key16 pfk.key16 356 #define key32 pfk.key32 357 }; 358 359 struct pf_pool { 360 struct pf_palist list; 361 struct pf_pooladdr *cur; 362 struct pf_poolhashkey key; 363 struct pf_addr counter; 364 int tblidx; 365 u_int16_t proxy_port[2]; 366 u_int8_t opts; 367 }; 368 369 370 /* A packed Operating System description for fingerprinting */ 371 typedef u_int32_t pf_osfp_t; 372 #define PF_OSFP_ANY ((pf_osfp_t)0) 373 #define PF_OSFP_UNKNOWN ((pf_osfp_t)-1) 374 #define PF_OSFP_NOMATCH ((pf_osfp_t)-2) 375 376 struct pf_osfp_entry { 377 SLIST_ENTRY(pf_osfp_entry) fp_entry; 378 pf_osfp_t fp_os; 379 int fp_enflags; 380 #define PF_OSFP_EXPANDED 0x001 /* expanded entry */ 381 #define PF_OSFP_GENERIC 0x002 /* generic signature */ 382 #define PF_OSFP_NODETAIL 0x004 /* no p0f details */ 383 #define PF_OSFP_LEN 32 384 char fp_class_nm[PF_OSFP_LEN]; 385 char fp_version_nm[PF_OSFP_LEN]; 386 char fp_subtype_nm[PF_OSFP_LEN]; 387 }; 388 #define PF_OSFP_ENTRY_EQ(a, b) \ 389 ((a)->fp_os == (b)->fp_os && \ 390 memcmp((a)->fp_class_nm, (b)->fp_class_nm, PF_OSFP_LEN) == 0 && \ 391 memcmp((a)->fp_version_nm, (b)->fp_version_nm, PF_OSFP_LEN) == 0 && \ 392 memcmp((a)->fp_subtype_nm, (b)->fp_subtype_nm, PF_OSFP_LEN) == 0) 393 394 /* handle pf_osfp_t packing */ 395 #define _FP_RESERVED_BIT 1 /* For the special negative #defines */ 396 #define _FP_UNUSED_BITS 1 397 #define _FP_CLASS_BITS 10 /* OS Class (Windows, Linux) */ 398 #define _FP_VERSION_BITS 10 /* OS version (95, 98, NT, 2.4.54, 3.2) */ 399 #define _FP_SUBTYPE_BITS 10 /* patch level (NT SP4, SP3, ECN patch) */ 400 #define PF_OSFP_UNPACK(osfp, class, version, subtype) do { \ 401 (class) = ((osfp) >> (_FP_VERSION_BITS+_FP_SUBTYPE_BITS)) & \ 402 ((1 << _FP_CLASS_BITS) - 1); \ 403 (version) = ((osfp) >> _FP_SUBTYPE_BITS) & \ 404 ((1 << _FP_VERSION_BITS) - 1);\ 405 (subtype) = (osfp) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 406 } while(0) 407 #define PF_OSFP_PACK(osfp, class, version, subtype) do { \ 408 (osfp) = ((class) & ((1 << _FP_CLASS_BITS) - 1)) << (_FP_VERSION_BITS \ 409 + _FP_SUBTYPE_BITS); \ 410 (osfp) |= ((version) & ((1 << _FP_VERSION_BITS) - 1)) << \ 411 _FP_SUBTYPE_BITS; \ 412 (osfp) |= (subtype) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 413 } while(0) 414 415 /* the fingerprint of an OSes TCP SYN packet */ 416 typedef u_int64_t pf_tcpopts_t; 417 struct pf_os_fingerprint { 418 SLIST_HEAD(pf_osfp_enlist, pf_osfp_entry) fp_oses; /* list of matches */ 419 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 420 u_int16_t fp_wsize; /* TCP window size */ 421 u_int16_t fp_psize; /* ip->ip_len */ 422 u_int16_t fp_mss; /* TCP MSS */ 423 u_int16_t fp_flags; 424 #define PF_OSFP_WSIZE_MOD 0x0001 /* Window modulus */ 425 #define PF_OSFP_WSIZE_DC 0x0002 /* Window don't care */ 426 #define PF_OSFP_WSIZE_MSS 0x0004 /* Window multiple of MSS */ 427 #define PF_OSFP_WSIZE_MTU 0x0008 /* Window multiple of MTU */ 428 #define PF_OSFP_PSIZE_MOD 0x0010 /* packet size modulus */ 429 #define PF_OSFP_PSIZE_DC 0x0020 /* packet size don't care */ 430 #define PF_OSFP_WSCALE 0x0040 /* TCP window scaling */ 431 #define PF_OSFP_WSCALE_MOD 0x0080 /* TCP window scale modulus */ 432 #define PF_OSFP_WSCALE_DC 0x0100 /* TCP window scale dont-care */ 433 #define PF_OSFP_MSS 0x0200 /* TCP MSS */ 434 #define PF_OSFP_MSS_MOD 0x0400 /* TCP MSS modulus */ 435 #define PF_OSFP_MSS_DC 0x0800 /* TCP MSS dont-care */ 436 #define PF_OSFP_DF 0x1000 /* IPv4 don't fragment bit */ 437 #define PF_OSFP_TS0 0x2000 /* Zero timestamp */ 438 #define PF_OSFP_INET6 0x4000 /* IPv6 */ 439 u_int8_t fp_optcnt; /* TCP option count */ 440 u_int8_t fp_wscale; /* TCP window scaling */ 441 u_int8_t fp_ttl; /* IPv4 TTL */ 442 #define PF_OSFP_MAXTTL_OFFSET 40 443 /* TCP options packing */ 444 #define PF_OSFP_TCPOPT_NOP 0x0 /* TCP NOP option */ 445 #define PF_OSFP_TCPOPT_WSCALE 0x1 /* TCP window scaling option */ 446 #define PF_OSFP_TCPOPT_MSS 0x2 /* TCP max segment size opt */ 447 #define PF_OSFP_TCPOPT_SACK 0x3 /* TCP SACK OK option */ 448 #define PF_OSFP_TCPOPT_TS 0x4 /* TCP timestamp option */ 449 #define PF_OSFP_TCPOPT_BITS 3 /* bits used by each option */ 450 #define PF_OSFP_MAX_OPTS \ 451 (sizeof(((struct pf_os_fingerprint *)0)->fp_tcpopts) * 8) \ 452 / PF_OSFP_TCPOPT_BITS 453 454 SLIST_ENTRY(pf_os_fingerprint) fp_next; 455 }; 456 457 struct pf_osfp_ioctl { 458 struct pf_osfp_entry fp_os; 459 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 460 u_int16_t fp_wsize; /* TCP window size */ 461 u_int16_t fp_psize; /* ip->ip_len */ 462 u_int16_t fp_mss; /* TCP MSS */ 463 u_int16_t fp_flags; 464 u_int8_t fp_optcnt; /* TCP option count */ 465 u_int8_t fp_wscale; /* TCP window scaling */ 466 u_int8_t fp_ttl; /* IPv4 TTL */ 467 468 int fp_getnum; /* DIOCOSFPGET number */ 469 }; 470 471 472 union pf_rule_ptr { 473 struct pf_rule *ptr; 474 u_int32_t nr; 475 }; 476 477 #define PF_ANCHOR_NAME_SIZE 64 478 479 struct pf_rule { 480 struct pf_rule_addr src; 481 struct pf_rule_addr dst; 482 #define PF_SKIP_IFP 0 483 #define PF_SKIP_DIR 1 484 #define PF_SKIP_AF 2 485 #define PF_SKIP_PROTO 3 486 #define PF_SKIP_SRC_ADDR 4 487 #define PF_SKIP_SRC_PORT 5 488 #define PF_SKIP_DST_ADDR 6 489 #define PF_SKIP_DST_PORT 7 490 #define PF_SKIP_COUNT 8 491 union pf_rule_ptr skip[PF_SKIP_COUNT]; 492 #define PF_RULE_LABEL_SIZE 64 493 char label[PF_RULE_LABEL_SIZE]; 494 char ifname[IFNAMSIZ]; 495 char qname[PF_QNAME_SIZE]; 496 char pqname[PF_QNAME_SIZE]; 497 #define PF_TAG_NAME_SIZE 64 498 char tagname[PF_TAG_NAME_SIZE]; 499 char match_tagname[PF_TAG_NAME_SIZE]; 500 501 char overload_tblname[PF_TABLE_NAME_SIZE]; 502 503 TAILQ_ENTRY(pf_rule) entries; 504 struct pf_pool rpool; 505 506 u_int64_t evaluations; 507 u_int64_t packets[2]; 508 u_int64_t bytes[2]; 509 510 struct pfi_kif *kif; 511 struct pf_anchor *anchor; 512 struct pfr_ktable *overload_tbl; 513 514 pf_osfp_t os_fingerprint; 515 516 int rtableid; 517 u_int32_t timeout[PFTM_MAX]; 518 u_int32_t max_states; 519 u_int32_t max_src_nodes; 520 u_int32_t max_src_states; 521 u_int32_t max_src_conn; 522 struct { 523 u_int32_t limit; 524 u_int32_t seconds; 525 } max_src_conn_rate; 526 u_int32_t qid; 527 u_int32_t pqid; 528 u_int32_t rt_listid; 529 u_int32_t nr; 530 u_int32_t prob; 531 uid_t cuid; 532 pid_t cpid; 533 534 counter_u64_t states_cur; 535 counter_u64_t states_tot; 536 counter_u64_t src_nodes; 537 538 u_int16_t return_icmp; 539 u_int16_t return_icmp6; 540 u_int16_t max_mss; 541 u_int16_t tag; 542 u_int16_t match_tag; 543 u_int16_t spare2; /* netgraph */ 544 545 struct pf_rule_uid uid; 546 struct pf_rule_gid gid; 547 548 u_int32_t rule_flag; 549 u_int8_t action; 550 u_int8_t direction; 551 u_int8_t log; 552 u_int8_t logif; 553 u_int8_t quick; 554 u_int8_t ifnot; 555 u_int8_t match_tag_not; 556 u_int8_t natpass; 557 558 #define PF_STATE_NORMAL 0x1 559 #define PF_STATE_MODULATE 0x2 560 #define PF_STATE_SYNPROXY 0x3 561 u_int8_t keep_state; 562 sa_family_t af; 563 u_int8_t proto; 564 u_int8_t type; 565 u_int8_t code; 566 u_int8_t flags; 567 u_int8_t flagset; 568 u_int8_t min_ttl; 569 u_int8_t allow_opts; 570 u_int8_t rt; 571 u_int8_t return_ttl; 572 u_int8_t tos; 573 u_int8_t set_tos; 574 u_int8_t anchor_relative; 575 u_int8_t anchor_wildcard; 576 577 #define PF_FLUSH 0x01 578 #define PF_FLUSH_GLOBAL 0x02 579 u_int8_t flush; 580 581 struct { 582 struct pf_addr addr; 583 u_int16_t port; 584 } divert; 585 586 uint64_t u_states_cur; 587 uint64_t u_states_tot; 588 uint64_t u_src_nodes; 589 }; 590 591 /* rule flags */ 592 #define PFRULE_DROP 0x0000 593 #define PFRULE_RETURNRST 0x0001 594 #define PFRULE_FRAGMENT 0x0002 595 #define PFRULE_RETURNICMP 0x0004 596 #define PFRULE_RETURN 0x0008 597 #define PFRULE_NOSYNC 0x0010 598 #define PFRULE_SRCTRACK 0x0020 /* track source states */ 599 #define PFRULE_RULESRCTRACK 0x0040 /* per rule */ 600 #define PFRULE_REFS 0x0080 /* rule has references */ 601 602 /* scrub flags */ 603 #define PFRULE_NODF 0x0100 604 #define PFRULE_RANDOMID 0x0800 605 #define PFRULE_REASSEMBLE_TCP 0x1000 606 #define PFRULE_SET_TOS 0x2000 607 608 /* rule flags again */ 609 #define PFRULE_IFBOUND 0x00010000 /* if-bound */ 610 #define PFRULE_STATESLOPPY 0x00020000 /* sloppy state tracking */ 611 612 #define PFSTATE_HIWAT 10000 /* default state table size */ 613 #define PFSTATE_ADAPT_START 6000 /* default adaptive timeout start */ 614 #define PFSTATE_ADAPT_END 12000 /* default adaptive timeout end */ 615 616 617 struct pf_threshold { 618 u_int32_t limit; 619 #define PF_THRESHOLD_MULT 1000 620 #define PF_THRESHOLD_MAX 0xffffffff / PF_THRESHOLD_MULT 621 u_int32_t seconds; 622 u_int32_t count; 623 u_int32_t last; 624 }; 625 626 struct pf_src_node { 627 LIST_ENTRY(pf_src_node) entry; 628 struct pf_addr addr; 629 struct pf_addr raddr; 630 union pf_rule_ptr rule; 631 struct pfi_kif *kif; 632 u_int64_t bytes[2]; 633 u_int64_t packets[2]; 634 u_int32_t states; 635 u_int32_t conn; 636 struct pf_threshold conn_rate; 637 u_int32_t creation; 638 u_int32_t expire; 639 sa_family_t af; 640 u_int8_t ruletype; 641 }; 642 643 #define PFSNODE_HIWAT 10000 /* default source node table size */ 644 645 struct pf_state_scrub { 646 struct timeval pfss_last; /* time received last packet */ 647 u_int32_t pfss_tsecr; /* last echoed timestamp */ 648 u_int32_t pfss_tsval; /* largest timestamp */ 649 u_int32_t pfss_tsval0; /* original timestamp */ 650 u_int16_t pfss_flags; 651 #define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */ 652 #define PFSS_PAWS 0x0010 /* stricter PAWS checks */ 653 #define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */ 654 #define PFSS_DATA_TS 0x0040 /* timestamp on data packets */ 655 #define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */ 656 u_int8_t pfss_ttl; /* stashed TTL */ 657 u_int8_t pad; 658 u_int32_t pfss_ts_mod; /* timestamp modulation */ 659 }; 660 661 struct pf_state_host { 662 struct pf_addr addr; 663 u_int16_t port; 664 u_int16_t pad; 665 }; 666 667 struct pf_state_peer { 668 struct pf_state_scrub *scrub; /* state is scrubbed */ 669 u_int32_t seqlo; /* Max sequence number sent */ 670 u_int32_t seqhi; /* Max the other end ACKd + win */ 671 u_int32_t seqdiff; /* Sequence number modulator */ 672 u_int16_t max_win; /* largest window (pre scaling) */ 673 u_int16_t mss; /* Maximum segment size option */ 674 u_int8_t state; /* active state level */ 675 u_int8_t wscale; /* window scaling factor */ 676 u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */ 677 u_int8_t pad[1]; 678 }; 679 680 /* Keep synced with struct pf_state_key. */ 681 struct pf_state_key_cmp { 682 struct pf_addr addr[2]; 683 u_int16_t port[2]; 684 sa_family_t af; 685 u_int8_t proto; 686 u_int8_t pad[2]; 687 }; 688 689 struct pf_state_key { 690 struct pf_addr addr[2]; 691 u_int16_t port[2]; 692 sa_family_t af; 693 u_int8_t proto; 694 u_int8_t pad[2]; 695 696 LIST_ENTRY(pf_state_key) entry; 697 TAILQ_HEAD(, pf_state) states[2]; 698 }; 699 700 /* Keep synced with struct pf_state. */ 701 struct pf_state_cmp { 702 u_int64_t id; 703 u_int32_t creatorid; 704 u_int8_t direction; 705 u_int8_t pad[3]; 706 }; 707 708 struct pf_state { 709 u_int64_t id; 710 u_int32_t creatorid; 711 u_int8_t direction; 712 u_int8_t pad[3]; 713 714 u_int refs; 715 TAILQ_ENTRY(pf_state) sync_list; 716 TAILQ_ENTRY(pf_state) key_list[2]; 717 LIST_ENTRY(pf_state) entry; 718 struct pf_state_peer src; 719 struct pf_state_peer dst; 720 union pf_rule_ptr rule; 721 union pf_rule_ptr anchor; 722 union pf_rule_ptr nat_rule; 723 struct pf_addr rt_addr; 724 struct pf_state_key *key[2]; /* addresses stack and wire */ 725 struct pfi_kif *kif; 726 struct pfi_kif *rt_kif; 727 struct pf_src_node *src_node; 728 struct pf_src_node *nat_src_node; 729 u_int64_t packets[2]; 730 u_int64_t bytes[2]; 731 u_int32_t creation; 732 u_int32_t expire; 733 u_int32_t pfsync_time; 734 u_int16_t tag; 735 u_int8_t log; 736 u_int8_t state_flags; 737 #define PFSTATE_ALLOWOPTS 0x01 738 #define PFSTATE_SLOPPY 0x02 739 /* was PFSTATE_PFLOW 0x04 */ 740 #define PFSTATE_NOSYNC 0x08 741 #define PFSTATE_ACK 0x10 742 u_int8_t timeout; 743 u_int8_t sync_state; /* PFSYNC_S_x */ 744 745 /* XXX */ 746 u_int8_t sync_updates; 747 u_int8_t _tail[3]; 748 }; 749 750 /* 751 * Unified state structures for pulling states out of the kernel 752 * used by pfsync(4) and the pf(4) ioctl. 753 */ 754 struct pfsync_state_scrub { 755 u_int16_t pfss_flags; 756 u_int8_t pfss_ttl; /* stashed TTL */ 757 #define PFSYNC_SCRUB_FLAG_VALID 0x01 758 u_int8_t scrub_flag; 759 u_int32_t pfss_ts_mod; /* timestamp modulation */ 760 } __packed; 761 762 struct pfsync_state_peer { 763 struct pfsync_state_scrub scrub; /* state is scrubbed */ 764 u_int32_t seqlo; /* Max sequence number sent */ 765 u_int32_t seqhi; /* Max the other end ACKd + win */ 766 u_int32_t seqdiff; /* Sequence number modulator */ 767 u_int16_t max_win; /* largest window (pre scaling) */ 768 u_int16_t mss; /* Maximum segment size option */ 769 u_int8_t state; /* active state level */ 770 u_int8_t wscale; /* window scaling factor */ 771 u_int8_t pad[6]; 772 } __packed; 773 774 struct pfsync_state_key { 775 struct pf_addr addr[2]; 776 u_int16_t port[2]; 777 }; 778 779 struct pfsync_state { 780 u_int64_t id; 781 char ifname[IFNAMSIZ]; 782 struct pfsync_state_key key[2]; 783 struct pfsync_state_peer src; 784 struct pfsync_state_peer dst; 785 struct pf_addr rt_addr; 786 u_int32_t rule; 787 u_int32_t anchor; 788 u_int32_t nat_rule; 789 u_int32_t creation; 790 u_int32_t expire; 791 u_int32_t packets[2][2]; 792 u_int32_t bytes[2][2]; 793 u_int32_t creatorid; 794 sa_family_t af; 795 u_int8_t proto; 796 u_int8_t direction; 797 u_int8_t __spare[2]; 798 u_int8_t log; 799 u_int8_t state_flags; 800 u_int8_t timeout; 801 u_int8_t sync_flags; 802 u_int8_t updates; 803 } __packed; 804 805 #ifdef _KERNEL 806 /* pfsync */ 807 typedef int pfsync_state_import_t(struct pfsync_state *, u_int8_t); 808 typedef void pfsync_insert_state_t(struct pf_state *); 809 typedef void pfsync_update_state_t(struct pf_state *); 810 typedef void pfsync_delete_state_t(struct pf_state *); 811 typedef void pfsync_clear_states_t(u_int32_t, const char *); 812 typedef int pfsync_defer_t(struct pf_state *, struct mbuf *); 813 814 extern pfsync_state_import_t *pfsync_state_import_ptr; 815 extern pfsync_insert_state_t *pfsync_insert_state_ptr; 816 extern pfsync_update_state_t *pfsync_update_state_ptr; 817 extern pfsync_delete_state_t *pfsync_delete_state_ptr; 818 extern pfsync_clear_states_t *pfsync_clear_states_ptr; 819 extern pfsync_defer_t *pfsync_defer_ptr; 820 821 void pfsync_state_export(struct pfsync_state *, 822 struct pf_state *); 823 824 /* pflog */ 825 struct pf_ruleset; 826 struct pf_pdesc; 827 typedef int pflog_packet_t(struct pfi_kif *, struct mbuf *, sa_family_t, 828 u_int8_t, u_int8_t, struct pf_rule *, struct pf_rule *, 829 struct pf_ruleset *, struct pf_pdesc *, int); 830 extern pflog_packet_t *pflog_packet_ptr; 831 832 #define V_pf_end_threads VNET(pf_end_threads) 833 #endif /* _KERNEL */ 834 835 #define PFSYNC_FLAG_SRCNODE 0x04 836 #define PFSYNC_FLAG_NATSRCNODE 0x08 837 838 /* for copies to/from network byte order */ 839 /* ioctl interface also uses network byte order */ 840 #define pf_state_peer_hton(s,d) do { \ 841 (d)->seqlo = htonl((s)->seqlo); \ 842 (d)->seqhi = htonl((s)->seqhi); \ 843 (d)->seqdiff = htonl((s)->seqdiff); \ 844 (d)->max_win = htons((s)->max_win); \ 845 (d)->mss = htons((s)->mss); \ 846 (d)->state = (s)->state; \ 847 (d)->wscale = (s)->wscale; \ 848 if ((s)->scrub) { \ 849 (d)->scrub.pfss_flags = \ 850 htons((s)->scrub->pfss_flags & PFSS_TIMESTAMP); \ 851 (d)->scrub.pfss_ttl = (s)->scrub->pfss_ttl; \ 852 (d)->scrub.pfss_ts_mod = htonl((s)->scrub->pfss_ts_mod);\ 853 (d)->scrub.scrub_flag = PFSYNC_SCRUB_FLAG_VALID; \ 854 } \ 855 } while (0) 856 857 #define pf_state_peer_ntoh(s,d) do { \ 858 (d)->seqlo = ntohl((s)->seqlo); \ 859 (d)->seqhi = ntohl((s)->seqhi); \ 860 (d)->seqdiff = ntohl((s)->seqdiff); \ 861 (d)->max_win = ntohs((s)->max_win); \ 862 (d)->mss = ntohs((s)->mss); \ 863 (d)->state = (s)->state; \ 864 (d)->wscale = (s)->wscale; \ 865 if ((s)->scrub.scrub_flag == PFSYNC_SCRUB_FLAG_VALID && \ 866 (d)->scrub != NULL) { \ 867 (d)->scrub->pfss_flags = \ 868 ntohs((s)->scrub.pfss_flags) & PFSS_TIMESTAMP; \ 869 (d)->scrub->pfss_ttl = (s)->scrub.pfss_ttl; \ 870 (d)->scrub->pfss_ts_mod = ntohl((s)->scrub.pfss_ts_mod);\ 871 } \ 872 } while (0) 873 874 #define pf_state_counter_hton(s,d) do { \ 875 d[0] = htonl((s>>32)&0xffffffff); \ 876 d[1] = htonl(s&0xffffffff); \ 877 } while (0) 878 879 #define pf_state_counter_from_pfsync(s) \ 880 (((u_int64_t)(s[0])<<32) | (u_int64_t)(s[1])) 881 882 #define pf_state_counter_ntoh(s,d) do { \ 883 d = ntohl(s[0]); \ 884 d = d<<32; \ 885 d += ntohl(s[1]); \ 886 } while (0) 887 888 TAILQ_HEAD(pf_rulequeue, pf_rule); 889 890 struct pf_anchor; 891 892 struct pf_ruleset { 893 struct { 894 struct pf_rulequeue queues[2]; 895 struct { 896 struct pf_rulequeue *ptr; 897 struct pf_rule **ptr_array; 898 u_int32_t rcount; 899 u_int32_t ticket; 900 int open; 901 } active, inactive; 902 } rules[PF_RULESET_MAX]; 903 struct pf_anchor *anchor; 904 u_int32_t tticket; 905 int tables; 906 int topen; 907 }; 908 909 RB_HEAD(pf_anchor_global, pf_anchor); 910 RB_HEAD(pf_anchor_node, pf_anchor); 911 struct pf_anchor { 912 RB_ENTRY(pf_anchor) entry_global; 913 RB_ENTRY(pf_anchor) entry_node; 914 struct pf_anchor *parent; 915 struct pf_anchor_node children; 916 char name[PF_ANCHOR_NAME_SIZE]; 917 char path[MAXPATHLEN]; 918 struct pf_ruleset ruleset; 919 int refcnt; /* anchor rules */ 920 int match; /* XXX: used for pfctl black magic */ 921 }; 922 RB_PROTOTYPE(pf_anchor_global, pf_anchor, entry_global, pf_anchor_compare); 923 RB_PROTOTYPE(pf_anchor_node, pf_anchor, entry_node, pf_anchor_compare); 924 925 #define PF_RESERVED_ANCHOR "_pf" 926 927 #define PFR_TFLAG_PERSIST 0x00000001 928 #define PFR_TFLAG_CONST 0x00000002 929 #define PFR_TFLAG_ACTIVE 0x00000004 930 #define PFR_TFLAG_INACTIVE 0x00000008 931 #define PFR_TFLAG_REFERENCED 0x00000010 932 #define PFR_TFLAG_REFDANCHOR 0x00000020 933 #define PFR_TFLAG_COUNTERS 0x00000040 934 /* Adjust masks below when adding flags. */ 935 #define PFR_TFLAG_USRMASK (PFR_TFLAG_PERSIST | \ 936 PFR_TFLAG_CONST | \ 937 PFR_TFLAG_COUNTERS) 938 #define PFR_TFLAG_SETMASK (PFR_TFLAG_ACTIVE | \ 939 PFR_TFLAG_INACTIVE | \ 940 PFR_TFLAG_REFERENCED | \ 941 PFR_TFLAG_REFDANCHOR) 942 #define PFR_TFLAG_ALLMASK (PFR_TFLAG_PERSIST | \ 943 PFR_TFLAG_CONST | \ 944 PFR_TFLAG_ACTIVE | \ 945 PFR_TFLAG_INACTIVE | \ 946 PFR_TFLAG_REFERENCED | \ 947 PFR_TFLAG_REFDANCHOR | \ 948 PFR_TFLAG_COUNTERS) 949 950 struct pf_anchor_stackframe; 951 952 struct pfr_table { 953 char pfrt_anchor[MAXPATHLEN]; 954 char pfrt_name[PF_TABLE_NAME_SIZE]; 955 u_int32_t pfrt_flags; 956 u_int8_t pfrt_fback; 957 }; 958 959 enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED, 960 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE, 961 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_NOCOUNT, PFR_FB_MAX }; 962 963 struct pfr_addr { 964 union { 965 struct in_addr _pfra_ip4addr; 966 struct in6_addr _pfra_ip6addr; 967 } pfra_u; 968 u_int8_t pfra_af; 969 u_int8_t pfra_net; 970 u_int8_t pfra_not; 971 u_int8_t pfra_fback; 972 }; 973 #define pfra_ip4addr pfra_u._pfra_ip4addr 974 #define pfra_ip6addr pfra_u._pfra_ip6addr 975 976 enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX }; 977 enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX }; 978 #define PFR_OP_XPASS PFR_OP_ADDR_MAX 979 980 struct pfr_astats { 981 struct pfr_addr pfras_a; 982 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 983 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 984 long pfras_tzero; 985 }; 986 987 enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX }; 988 989 struct pfr_tstats { 990 struct pfr_table pfrts_t; 991 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 992 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 993 u_int64_t pfrts_match; 994 u_int64_t pfrts_nomatch; 995 long pfrts_tzero; 996 int pfrts_cnt; 997 int pfrts_refcnt[PFR_REFCNT_MAX]; 998 }; 999 #define pfrts_name pfrts_t.pfrt_name 1000 #define pfrts_flags pfrts_t.pfrt_flags 1001 1002 #ifndef _SOCKADDR_UNION_DEFINED 1003 #define _SOCKADDR_UNION_DEFINED 1004 union sockaddr_union { 1005 struct sockaddr sa; 1006 struct sockaddr_in sin; 1007 struct sockaddr_in6 sin6; 1008 }; 1009 #endif /* _SOCKADDR_UNION_DEFINED */ 1010 1011 struct pfr_kcounters { 1012 u_int64_t pfrkc_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1013 u_int64_t pfrkc_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1014 }; 1015 1016 SLIST_HEAD(pfr_kentryworkq, pfr_kentry); 1017 struct pfr_kentry { 1018 struct radix_node pfrke_node[2]; 1019 union sockaddr_union pfrke_sa; 1020 SLIST_ENTRY(pfr_kentry) pfrke_workq; 1021 struct pfr_kcounters *pfrke_counters; 1022 long pfrke_tzero; 1023 u_int8_t pfrke_af; 1024 u_int8_t pfrke_net; 1025 u_int8_t pfrke_not; 1026 u_int8_t pfrke_mark; 1027 }; 1028 1029 SLIST_HEAD(pfr_ktableworkq, pfr_ktable); 1030 RB_HEAD(pfr_ktablehead, pfr_ktable); 1031 struct pfr_ktable { 1032 struct pfr_tstats pfrkt_ts; 1033 RB_ENTRY(pfr_ktable) pfrkt_tree; 1034 SLIST_ENTRY(pfr_ktable) pfrkt_workq; 1035 struct radix_node_head *pfrkt_ip4; 1036 struct radix_node_head *pfrkt_ip6; 1037 struct pfr_ktable *pfrkt_shadow; 1038 struct pfr_ktable *pfrkt_root; 1039 struct pf_ruleset *pfrkt_rs; 1040 long pfrkt_larg; 1041 int pfrkt_nflags; 1042 }; 1043 #define pfrkt_t pfrkt_ts.pfrts_t 1044 #define pfrkt_name pfrkt_t.pfrt_name 1045 #define pfrkt_anchor pfrkt_t.pfrt_anchor 1046 #define pfrkt_ruleset pfrkt_t.pfrt_ruleset 1047 #define pfrkt_flags pfrkt_t.pfrt_flags 1048 #define pfrkt_cnt pfrkt_ts.pfrts_cnt 1049 #define pfrkt_refcnt pfrkt_ts.pfrts_refcnt 1050 #define pfrkt_packets pfrkt_ts.pfrts_packets 1051 #define pfrkt_bytes pfrkt_ts.pfrts_bytes 1052 #define pfrkt_match pfrkt_ts.pfrts_match 1053 #define pfrkt_nomatch pfrkt_ts.pfrts_nomatch 1054 #define pfrkt_tzero pfrkt_ts.pfrts_tzero 1055 1056 /* keep synced with pfi_kif, used in RB_FIND */ 1057 struct pfi_kif_cmp { 1058 char pfik_name[IFNAMSIZ]; 1059 }; 1060 1061 struct pfi_kif { 1062 char pfik_name[IFNAMSIZ]; 1063 union { 1064 RB_ENTRY(pfi_kif) _pfik_tree; 1065 LIST_ENTRY(pfi_kif) _pfik_list; 1066 } _pfik_glue; 1067 #define pfik_tree _pfik_glue._pfik_tree 1068 #define pfik_list _pfik_glue._pfik_list 1069 u_int64_t pfik_packets[2][2][2]; 1070 u_int64_t pfik_bytes[2][2][2]; 1071 u_int32_t pfik_tzero; 1072 u_int pfik_flags; 1073 struct ifnet *pfik_ifp; 1074 struct ifg_group *pfik_group; 1075 u_int pfik_rulerefs; 1076 TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs; 1077 }; 1078 1079 #define PFI_IFLAG_REFS 0x0001 /* has state references */ 1080 #define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */ 1081 1082 struct pf_pdesc { 1083 struct { 1084 int done; 1085 uid_t uid; 1086 gid_t gid; 1087 } lookup; 1088 u_int64_t tot_len; /* Make Mickey money */ 1089 union { 1090 struct tcphdr *tcp; 1091 struct udphdr *udp; 1092 struct icmp *icmp; 1093 #ifdef INET6 1094 struct icmp6_hdr *icmp6; 1095 #endif /* INET6 */ 1096 void *any; 1097 } hdr; 1098 1099 struct pf_rule *nat_rule; /* nat/rdr rule applied to packet */ 1100 struct pf_addr *src; /* src address */ 1101 struct pf_addr *dst; /* dst address */ 1102 u_int16_t *sport; 1103 u_int16_t *dport; 1104 struct pf_mtag *pf_mtag; 1105 1106 u_int32_t p_len; /* total length of payload */ 1107 1108 u_int16_t *ip_sum; 1109 u_int16_t *proto_sum; 1110 u_int16_t flags; /* Let SCRUB trigger behavior in 1111 * state code. Easier than tags */ 1112 #define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */ 1113 #define PFDESC_IP_REAS 0x0002 /* IP frags would've been reassembled */ 1114 sa_family_t af; 1115 u_int8_t proto; 1116 u_int8_t tos; 1117 u_int8_t dir; /* direction */ 1118 u_int8_t sidx; /* key index for source */ 1119 u_int8_t didx; /* key index for destination */ 1120 }; 1121 1122 /* flags for RDR options */ 1123 #define PF_DPORT_RANGE 0x01 /* Dest port uses range */ 1124 #define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */ 1125 1126 /* UDP state enumeration */ 1127 #define PFUDPS_NO_TRAFFIC 0 1128 #define PFUDPS_SINGLE 1 1129 #define PFUDPS_MULTIPLE 2 1130 1131 #define PFUDPS_NSTATES 3 /* number of state levels */ 1132 1133 #define PFUDPS_NAMES { \ 1134 "NO_TRAFFIC", \ 1135 "SINGLE", \ 1136 "MULTIPLE", \ 1137 NULL \ 1138 } 1139 1140 /* Other protocol state enumeration */ 1141 #define PFOTHERS_NO_TRAFFIC 0 1142 #define PFOTHERS_SINGLE 1 1143 #define PFOTHERS_MULTIPLE 2 1144 1145 #define PFOTHERS_NSTATES 3 /* number of state levels */ 1146 1147 #define PFOTHERS_NAMES { \ 1148 "NO_TRAFFIC", \ 1149 "SINGLE", \ 1150 "MULTIPLE", \ 1151 NULL \ 1152 } 1153 1154 #define ACTION_SET(a, x) \ 1155 do { \ 1156 if ((a) != NULL) \ 1157 *(a) = (x); \ 1158 } while (0) 1159 1160 #define REASON_SET(a, x) \ 1161 do { \ 1162 if ((a) != NULL) \ 1163 *(a) = (x); \ 1164 if (x < PFRES_MAX) \ 1165 counter_u64_add(V_pf_status.counters[x], 1); \ 1166 } while (0) 1167 1168 struct pf_kstatus { 1169 counter_u64_t counters[PFRES_MAX]; /* reason for passing/dropping */ 1170 counter_u64_t lcounters[LCNT_MAX]; /* limit counters */ 1171 counter_u64_t fcounters[FCNT_MAX]; /* state operation counters */ 1172 counter_u64_t scounters[SCNT_MAX]; /* src_node operation counters */ 1173 uint32_t states; 1174 uint32_t src_nodes; 1175 uint32_t running; 1176 uint32_t since; 1177 uint32_t debug; 1178 uint32_t hostid; 1179 char ifname[IFNAMSIZ]; 1180 uint8_t pf_chksum[PF_MD5_DIGEST_LENGTH]; 1181 }; 1182 1183 struct pf_divert { 1184 union { 1185 struct in_addr ipv4; 1186 struct in6_addr ipv6; 1187 } addr; 1188 u_int16_t port; 1189 }; 1190 1191 #define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */ 1192 #define PFR_KENTRY_HIWAT 200000 /* Number of table entries */ 1193 1194 /* 1195 * ioctl parameter structures 1196 */ 1197 1198 struct pfioc_pooladdr { 1199 u_int32_t action; 1200 u_int32_t ticket; 1201 u_int32_t nr; 1202 u_int32_t r_num; 1203 u_int8_t r_action; 1204 u_int8_t r_last; 1205 u_int8_t af; 1206 char anchor[MAXPATHLEN]; 1207 struct pf_pooladdr addr; 1208 }; 1209 1210 struct pfioc_rule { 1211 u_int32_t action; 1212 u_int32_t ticket; 1213 u_int32_t pool_ticket; 1214 u_int32_t nr; 1215 char anchor[MAXPATHLEN]; 1216 char anchor_call[MAXPATHLEN]; 1217 struct pf_rule rule; 1218 }; 1219 1220 struct pfioc_natlook { 1221 struct pf_addr saddr; 1222 struct pf_addr daddr; 1223 struct pf_addr rsaddr; 1224 struct pf_addr rdaddr; 1225 u_int16_t sport; 1226 u_int16_t dport; 1227 u_int16_t rsport; 1228 u_int16_t rdport; 1229 sa_family_t af; 1230 u_int8_t proto; 1231 u_int8_t direction; 1232 }; 1233 1234 struct pfioc_state { 1235 struct pfsync_state state; 1236 }; 1237 1238 struct pfioc_src_node_kill { 1239 sa_family_t psnk_af; 1240 struct pf_rule_addr psnk_src; 1241 struct pf_rule_addr psnk_dst; 1242 u_int psnk_killed; 1243 }; 1244 1245 struct pfioc_state_kill { 1246 struct pf_state_cmp psk_pfcmp; 1247 sa_family_t psk_af; 1248 int psk_proto; 1249 struct pf_rule_addr psk_src; 1250 struct pf_rule_addr psk_dst; 1251 char psk_ifname[IFNAMSIZ]; 1252 char psk_label[PF_RULE_LABEL_SIZE]; 1253 u_int psk_killed; 1254 }; 1255 1256 struct pfioc_states { 1257 int ps_len; 1258 union { 1259 caddr_t psu_buf; 1260 struct pfsync_state *psu_states; 1261 } ps_u; 1262 #define ps_buf ps_u.psu_buf 1263 #define ps_states ps_u.psu_states 1264 }; 1265 1266 struct pfioc_src_nodes { 1267 int psn_len; 1268 union { 1269 caddr_t psu_buf; 1270 struct pf_src_node *psu_src_nodes; 1271 } psn_u; 1272 #define psn_buf psn_u.psu_buf 1273 #define psn_src_nodes psn_u.psu_src_nodes 1274 }; 1275 1276 struct pfioc_if { 1277 char ifname[IFNAMSIZ]; 1278 }; 1279 1280 struct pfioc_tm { 1281 int timeout; 1282 int seconds; 1283 }; 1284 1285 struct pfioc_limit { 1286 int index; 1287 unsigned limit; 1288 }; 1289 1290 struct pfioc_altq { 1291 u_int32_t action; 1292 u_int32_t ticket; 1293 u_int32_t nr; 1294 struct pf_altq altq; 1295 }; 1296 1297 struct pfioc_qstats { 1298 u_int32_t ticket; 1299 u_int32_t nr; 1300 void *buf; 1301 int nbytes; 1302 u_int8_t scheduler; 1303 }; 1304 1305 struct pfioc_ruleset { 1306 u_int32_t nr; 1307 char path[MAXPATHLEN]; 1308 char name[PF_ANCHOR_NAME_SIZE]; 1309 }; 1310 1311 #define PF_RULESET_ALTQ (PF_RULESET_MAX) 1312 #define PF_RULESET_TABLE (PF_RULESET_MAX+1) 1313 struct pfioc_trans { 1314 int size; /* number of elements */ 1315 int esize; /* size of each element in bytes */ 1316 struct pfioc_trans_e { 1317 int rs_num; 1318 char anchor[MAXPATHLEN]; 1319 u_int32_t ticket; 1320 } *array; 1321 }; 1322 1323 #define PFR_FLAG_ATOMIC 0x00000001 /* unused */ 1324 #define PFR_FLAG_DUMMY 0x00000002 1325 #define PFR_FLAG_FEEDBACK 0x00000004 1326 #define PFR_FLAG_CLSTATS 0x00000008 1327 #define PFR_FLAG_ADDRSTOO 0x00000010 1328 #define PFR_FLAG_REPLACE 0x00000020 1329 #define PFR_FLAG_ALLRSETS 0x00000040 1330 #define PFR_FLAG_ALLMASK 0x0000007F 1331 #ifdef _KERNEL 1332 #define PFR_FLAG_USERIOCTL 0x10000000 1333 #endif 1334 1335 struct pfioc_table { 1336 struct pfr_table pfrio_table; 1337 void *pfrio_buffer; 1338 int pfrio_esize; 1339 int pfrio_size; 1340 int pfrio_size2; 1341 int pfrio_nadd; 1342 int pfrio_ndel; 1343 int pfrio_nchange; 1344 int pfrio_flags; 1345 u_int32_t pfrio_ticket; 1346 }; 1347 #define pfrio_exists pfrio_nadd 1348 #define pfrio_nzero pfrio_nadd 1349 #define pfrio_nmatch pfrio_nadd 1350 #define pfrio_naddr pfrio_size2 1351 #define pfrio_setflag pfrio_size2 1352 #define pfrio_clrflag pfrio_nadd 1353 1354 struct pfioc_iface { 1355 char pfiio_name[IFNAMSIZ]; 1356 void *pfiio_buffer; 1357 int pfiio_esize; 1358 int pfiio_size; 1359 int pfiio_nzero; 1360 int pfiio_flags; 1361 }; 1362 1363 1364 /* 1365 * ioctl operations 1366 */ 1367 1368 #define DIOCSTART _IO ('D', 1) 1369 #define DIOCSTOP _IO ('D', 2) 1370 #define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule) 1371 #define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule) 1372 #define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule) 1373 /* XXX cut 8 - 17 */ 1374 #define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill) 1375 #define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state) 1376 #define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if) 1377 #define DIOCGETSTATUS _IOWR('D', 21, struct pf_status) 1378 #define DIOCCLRSTATUS _IO ('D', 22) 1379 #define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook) 1380 #define DIOCSETDEBUG _IOWR('D', 24, u_int32_t) 1381 #define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states) 1382 #define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule) 1383 /* XXX cut 26 - 28 */ 1384 #define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm) 1385 #define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm) 1386 #define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state) 1387 #define DIOCCLRRULECTRS _IO ('D', 38) 1388 #define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit) 1389 #define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit) 1390 #define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill) 1391 #define DIOCSTARTALTQ _IO ('D', 42) 1392 #define DIOCSTOPALTQ _IO ('D', 43) 1393 #define DIOCADDALTQ _IOWR('D', 45, struct pfioc_altq) 1394 #define DIOCGETALTQS _IOWR('D', 47, struct pfioc_altq) 1395 #define DIOCGETALTQ _IOWR('D', 48, struct pfioc_altq) 1396 #define DIOCCHANGEALTQ _IOWR('D', 49, struct pfioc_altq) 1397 #define DIOCGETQSTATS _IOWR('D', 50, struct pfioc_qstats) 1398 #define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr) 1399 #define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr) 1400 #define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr) 1401 #define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr) 1402 #define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr) 1403 /* XXX cut 55 - 57 */ 1404 #define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset) 1405 #define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset) 1406 #define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table) 1407 #define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table) 1408 #define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table) 1409 #define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table) 1410 #define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table) 1411 #define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table) 1412 #define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table) 1413 #define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table) 1414 #define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table) 1415 #define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table) 1416 #define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table) 1417 #define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table) 1418 #define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table) 1419 #define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table) 1420 #define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table) 1421 #define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table) 1422 #define DIOCOSFPFLUSH _IO('D', 78) 1423 #define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl) 1424 #define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl) 1425 #define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans) 1426 #define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans) 1427 #define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans) 1428 #define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes) 1429 #define DIOCCLRSRCNODES _IO('D', 85) 1430 #define DIOCSETHOSTID _IOWR('D', 86, u_int32_t) 1431 #define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface) 1432 #define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface) 1433 #define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface) 1434 #define DIOCKILLSRCNODES _IOWR('D', 91, struct pfioc_src_node_kill) 1435 struct pf_ifspeed { 1436 char ifname[IFNAMSIZ]; 1437 u_int32_t baudrate; 1438 }; 1439 #define DIOCGIFSPEED _IOWR('D', 92, struct pf_ifspeed) 1440 1441 #ifdef _KERNEL 1442 LIST_HEAD(pf_src_node_list, pf_src_node); 1443 struct pf_srchash { 1444 struct pf_src_node_list nodes; 1445 struct mtx lock; 1446 }; 1447 1448 struct pf_keyhash { 1449 LIST_HEAD(, pf_state_key) keys; 1450 struct mtx lock; 1451 }; 1452 1453 struct pf_idhash { 1454 LIST_HEAD(, pf_state) states; 1455 struct mtx lock; 1456 }; 1457 1458 extern u_long pf_hashmask; 1459 extern u_long pf_srchashmask; 1460 #define PF_HASHSIZ (32768) 1461 VNET_DECLARE(struct pf_keyhash *, pf_keyhash); 1462 VNET_DECLARE(struct pf_idhash *, pf_idhash); 1463 #define V_pf_keyhash VNET(pf_keyhash) 1464 #define V_pf_idhash VNET(pf_idhash) 1465 VNET_DECLARE(struct pf_srchash *, pf_srchash); 1466 #define V_pf_srchash VNET(pf_srchash) 1467 1468 #define PF_IDHASH(s) (be64toh((s)->id) % (pf_hashmask + 1)) 1469 1470 VNET_DECLARE(void *, pf_swi_cookie); 1471 #define V_pf_swi_cookie VNET(pf_swi_cookie) 1472 1473 VNET_DECLARE(uint64_t, pf_stateid[MAXCPU]); 1474 #define V_pf_stateid VNET(pf_stateid) 1475 1476 TAILQ_HEAD(pf_altqqueue, pf_altq); 1477 VNET_DECLARE(struct pf_altqqueue, pf_altqs[2]); 1478 #define V_pf_altqs VNET(pf_altqs) 1479 VNET_DECLARE(struct pf_palist, pf_pabuf); 1480 #define V_pf_pabuf VNET(pf_pabuf) 1481 1482 VNET_DECLARE(u_int32_t, ticket_altqs_active); 1483 #define V_ticket_altqs_active VNET(ticket_altqs_active) 1484 VNET_DECLARE(u_int32_t, ticket_altqs_inactive); 1485 #define V_ticket_altqs_inactive VNET(ticket_altqs_inactive) 1486 VNET_DECLARE(int, altqs_inactive_open); 1487 #define V_altqs_inactive_open VNET(altqs_inactive_open) 1488 VNET_DECLARE(u_int32_t, ticket_pabuf); 1489 #define V_ticket_pabuf VNET(ticket_pabuf) 1490 VNET_DECLARE(struct pf_altqqueue *, pf_altqs_active); 1491 #define V_pf_altqs_active VNET(pf_altqs_active) 1492 VNET_DECLARE(struct pf_altqqueue *, pf_altqs_inactive); 1493 #define V_pf_altqs_inactive VNET(pf_altqs_inactive) 1494 1495 VNET_DECLARE(struct pf_rulequeue, pf_unlinked_rules); 1496 #define V_pf_unlinked_rules VNET(pf_unlinked_rules) 1497 1498 void pf_initialize(void); 1499 void pf_mtag_initialize(void); 1500 void pf_mtag_cleanup(void); 1501 void pf_cleanup(void); 1502 1503 struct pf_mtag *pf_get_mtag(struct mbuf *); 1504 1505 extern void pf_calc_skip_steps(struct pf_rulequeue *); 1506 #ifdef ALTQ 1507 extern void pf_altq_ifnet_event(struct ifnet *, int); 1508 #endif 1509 VNET_DECLARE(uma_zone_t, pf_state_z); 1510 #define V_pf_state_z VNET(pf_state_z) 1511 VNET_DECLARE(uma_zone_t, pf_state_key_z); 1512 #define V_pf_state_key_z VNET(pf_state_key_z) 1513 VNET_DECLARE(uma_zone_t, pf_state_scrub_z); 1514 #define V_pf_state_scrub_z VNET(pf_state_scrub_z) 1515 1516 extern void pf_purge_thread(void *); 1517 extern void pf_intr(void *); 1518 extern void pf_purge_expired_src_nodes(void); 1519 1520 extern int pf_unlink_state(struct pf_state *, u_int); 1521 #define PF_ENTER_LOCKED 0x00000001 1522 #define PF_RETURN_LOCKED 0x00000002 1523 extern int pf_state_insert(struct pfi_kif *, 1524 struct pf_state_key *, 1525 struct pf_state_key *, 1526 struct pf_state *); 1527 extern void pf_free_state(struct pf_state *); 1528 1529 static __inline void 1530 pf_ref_state(struct pf_state *s) 1531 { 1532 1533 refcount_acquire(&s->refs); 1534 } 1535 1536 static __inline int 1537 pf_release_state(struct pf_state *s) 1538 { 1539 1540 if (refcount_release(&s->refs)) { 1541 pf_free_state(s); 1542 return (1); 1543 } else 1544 return (0); 1545 } 1546 1547 extern struct pf_state *pf_find_state_byid(uint64_t, uint32_t); 1548 extern struct pf_state *pf_find_state_all(struct pf_state_key_cmp *, 1549 u_int, int *); 1550 extern struct pf_src_node *pf_find_src_node(struct pf_addr *, 1551 struct pf_rule *, sa_family_t, int); 1552 extern void pf_unlink_src_node(struct pf_src_node *); 1553 extern u_int pf_free_src_nodes(struct pf_src_node_list *); 1554 extern void pf_print_state(struct pf_state *); 1555 extern void pf_print_flags(u_int8_t); 1556 extern u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t, 1557 u_int8_t); 1558 extern u_int16_t pf_proto_cksum_fixup(struct mbuf *, u_int16_t, 1559 u_int16_t, u_int16_t, u_int8_t); 1560 1561 VNET_DECLARE(struct ifnet *, sync_ifp); 1562 #define V_sync_ifp VNET(sync_ifp); 1563 VNET_DECLARE(struct pf_rule, pf_default_rule); 1564 #define V_pf_default_rule VNET(pf_default_rule) 1565 extern void pf_addrcpy(struct pf_addr *, struct pf_addr *, 1566 u_int8_t); 1567 void pf_free_rule(struct pf_rule *); 1568 1569 #ifdef INET 1570 int pf_test(int, struct ifnet *, struct mbuf **, struct inpcb *); 1571 int pf_normalize_ip(struct mbuf **, int, struct pfi_kif *, u_short *, 1572 struct pf_pdesc *); 1573 #endif /* INET */ 1574 1575 #ifdef INET6 1576 int pf_test6(int, struct ifnet *, struct mbuf **, struct inpcb *); 1577 int pf_normalize_ip6(struct mbuf **, int, struct pfi_kif *, u_short *, 1578 struct pf_pdesc *); 1579 void pf_poolmask(struct pf_addr *, struct pf_addr*, 1580 struct pf_addr *, struct pf_addr *, u_int8_t); 1581 void pf_addr_inc(struct pf_addr *, sa_family_t); 1582 int pf_refragment6(struct ifnet *, struct mbuf **, struct m_tag *); 1583 #endif /* INET6 */ 1584 1585 u_int32_t pf_new_isn(struct pf_state *); 1586 void *pf_pull_hdr(struct mbuf *, int, void *, int, u_short *, u_short *, 1587 sa_family_t); 1588 void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t); 1589 void pf_change_proto_a(struct mbuf *, void *, u_int16_t *, u_int32_t, 1590 u_int8_t); 1591 void pf_change_tcp_a(struct mbuf *, void *, u_int16_t *, u_int32_t); 1592 void pf_send_deferred_syn(struct pf_state *); 1593 int pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *, 1594 struct pf_addr *, sa_family_t); 1595 int pf_match_addr_range(struct pf_addr *, struct pf_addr *, 1596 struct pf_addr *, sa_family_t); 1597 int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t); 1598 1599 void pf_normalize_init(void); 1600 void pf_normalize_cleanup(void); 1601 int pf_normalize_tcp(int, struct pfi_kif *, struct mbuf *, int, int, void *, 1602 struct pf_pdesc *); 1603 void pf_normalize_tcp_cleanup(struct pf_state *); 1604 int pf_normalize_tcp_init(struct mbuf *, int, struct pf_pdesc *, 1605 struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *); 1606 int pf_normalize_tcp_stateful(struct mbuf *, int, struct pf_pdesc *, 1607 u_short *, struct tcphdr *, struct pf_state *, 1608 struct pf_state_peer *, struct pf_state_peer *, int *); 1609 u_int32_t 1610 pf_state_expires(const struct pf_state *); 1611 void pf_purge_expired_fragments(void); 1612 int pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kif *, 1613 int); 1614 int pf_socket_lookup(int, struct pf_pdesc *, struct mbuf *); 1615 struct pf_state_key *pf_alloc_state_key(int); 1616 void pfr_initialize(void); 1617 void pfr_cleanup(void); 1618 int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t); 1619 void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t, 1620 u_int64_t, int, int, int); 1621 int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, sa_family_t); 1622 void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *); 1623 struct pfr_ktable * 1624 pfr_attach_table(struct pf_ruleset *, char *); 1625 void pfr_detach_table(struct pfr_ktable *); 1626 int pfr_clr_tables(struct pfr_table *, int *, int); 1627 int pfr_add_tables(struct pfr_table *, int, int *, int); 1628 int pfr_del_tables(struct pfr_table *, int, int *, int); 1629 int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int); 1630 int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int); 1631 int pfr_clr_tstats(struct pfr_table *, int, int *, int); 1632 int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int); 1633 int pfr_clr_addrs(struct pfr_table *, int *, int); 1634 int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *, long); 1635 int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1636 int); 1637 int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1638 int); 1639 int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1640 int *, int *, int *, int, u_int32_t); 1641 int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int); 1642 int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int); 1643 int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *, 1644 int); 1645 int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1646 int); 1647 int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int); 1648 int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int); 1649 int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int); 1650 int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *, 1651 int *, u_int32_t, int); 1652 1653 MALLOC_DECLARE(PFI_MTYPE); 1654 VNET_DECLARE(struct pfi_kif *, pfi_all); 1655 #define V_pfi_all VNET(pfi_all) 1656 1657 void pfi_initialize(void); 1658 void pfi_cleanup(void); 1659 void pfi_kif_ref(struct pfi_kif *); 1660 void pfi_kif_unref(struct pfi_kif *); 1661 struct pfi_kif *pfi_kif_find(const char *); 1662 struct pfi_kif *pfi_kif_attach(struct pfi_kif *, const char *); 1663 int pfi_kif_match(struct pfi_kif *, struct pfi_kif *); 1664 void pfi_kif_purge(void); 1665 int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *, 1666 sa_family_t); 1667 int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t); 1668 void pfi_dynaddr_remove(struct pfi_dynaddr *); 1669 void pfi_dynaddr_copyout(struct pf_addr_wrap *); 1670 void pfi_update_status(const char *, struct pf_status *); 1671 void pfi_get_ifaces(const char *, struct pfi_kif *, int *); 1672 int pfi_set_flags(const char *, int); 1673 int pfi_clear_flags(const char *, int); 1674 1675 int pf_match_tag(struct mbuf *, struct pf_rule *, int *, int); 1676 int pf_tag_packet(struct mbuf *, struct pf_pdesc *, int); 1677 int pf_addr_cmp(struct pf_addr *, struct pf_addr *, 1678 sa_family_t); 1679 void pf_qid2qname(u_int32_t, char *); 1680 1681 VNET_DECLARE(struct pf_kstatus, pf_status); 1682 #define V_pf_status VNET(pf_status) 1683 1684 struct pf_limit { 1685 uma_zone_t zone; 1686 u_int limit; 1687 }; 1688 VNET_DECLARE(struct pf_limit, pf_limits[PF_LIMIT_MAX]); 1689 #define V_pf_limits VNET(pf_limits) 1690 1691 #endif /* _KERNEL */ 1692 1693 #ifdef _KERNEL 1694 VNET_DECLARE(struct pf_anchor_global, pf_anchors); 1695 #define V_pf_anchors VNET(pf_anchors) 1696 VNET_DECLARE(struct pf_anchor, pf_main_anchor); 1697 #define V_pf_main_anchor VNET(pf_main_anchor) 1698 #define pf_main_ruleset V_pf_main_anchor.ruleset 1699 #endif 1700 1701 /* these ruleset functions can be linked into userland programs (pfctl) */ 1702 int pf_get_ruleset_number(u_int8_t); 1703 void pf_init_ruleset(struct pf_ruleset *); 1704 int pf_anchor_setup(struct pf_rule *, 1705 const struct pf_ruleset *, const char *); 1706 int pf_anchor_copyout(const struct pf_ruleset *, 1707 const struct pf_rule *, struct pfioc_rule *); 1708 void pf_anchor_remove(struct pf_rule *); 1709 void pf_remove_if_empty_ruleset(struct pf_ruleset *); 1710 struct pf_ruleset *pf_find_ruleset(const char *); 1711 struct pf_ruleset *pf_find_or_create_ruleset(const char *); 1712 void pf_rs_initialize(void); 1713 1714 /* The fingerprint functions can be linked into userland programs (tcpdump) */ 1715 int pf_osfp_add(struct pf_osfp_ioctl *); 1716 #ifdef _KERNEL 1717 struct pf_osfp_enlist * 1718 pf_osfp_fingerprint(struct pf_pdesc *, struct mbuf *, int, 1719 const struct tcphdr *); 1720 #endif /* _KERNEL */ 1721 void pf_osfp_flush(void); 1722 int pf_osfp_get(struct pf_osfp_ioctl *); 1723 int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t); 1724 1725 #ifdef _KERNEL 1726 void pf_print_host(struct pf_addr *, u_int16_t, u_int8_t); 1727 1728 void pf_step_into_anchor(struct pf_anchor_stackframe *, int *, 1729 struct pf_ruleset **, int, struct pf_rule **, 1730 struct pf_rule **, int *); 1731 int pf_step_out_of_anchor(struct pf_anchor_stackframe *, int *, 1732 struct pf_ruleset **, int, struct pf_rule **, 1733 struct pf_rule **, int *); 1734 1735 int pf_map_addr(u_int8_t, struct pf_rule *, 1736 struct pf_addr *, struct pf_addr *, 1737 struct pf_addr *, struct pf_src_node **); 1738 struct pf_rule *pf_get_translation(struct pf_pdesc *, struct mbuf *, 1739 int, int, struct pfi_kif *, struct pf_src_node **, 1740 struct pf_state_key **, struct pf_state_key **, 1741 struct pf_addr *, struct pf_addr *, 1742 uint16_t, uint16_t, struct pf_anchor_stackframe *); 1743 1744 struct pf_state_key *pf_state_key_setup(struct pf_pdesc *, struct pf_addr *, 1745 struct pf_addr *, u_int16_t, u_int16_t); 1746 struct pf_state_key *pf_state_key_clone(struct pf_state_key *); 1747 #endif /* _KERNEL */ 1748 1749 #endif /* _NET_PFVAR_H_ */ 1750