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FreeBSD/Linux Kernel Cross Reference
sys/net/pfvar.h
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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/cpuset.h> 40 #include <sys/malloc.h> 41 #include <sys/refcount.h> 42 #include <sys/lock.h> 43 #include <sys/rmlock.h> 44 #include <sys/tree.h> 45 #include <vm/uma.h> 46 47 #include <net/radix.h> 48 #include <netinet/in.h> 49 50 #include <netpfil/pf/pf.h> 51 #include <netpfil/pf/pf_altq.h> 52 #include <netpfil/pf/pf_mtag.h> 53 54 struct pf_addr { 55 union { 56 struct in_addr v4; 57 struct in6_addr v6; 58 u_int8_t addr8[16]; 59 u_int16_t addr16[8]; 60 u_int32_t addr32[4]; 61 } pfa; /* 128-bit address */ 62 #define v4 pfa.v4 63 #define v6 pfa.v6 64 #define addr8 pfa.addr8 65 #define addr16 pfa.addr16 66 #define addr32 pfa.addr32 67 }; 68 69 #define PFI_AFLAG_NETWORK 0x01 70 #define PFI_AFLAG_BROADCAST 0x02 71 #define PFI_AFLAG_PEER 0x04 72 #define PFI_AFLAG_MODEMASK 0x07 73 #define PFI_AFLAG_NOALIAS 0x08 74 75 struct pf_addr_wrap { 76 union { 77 struct { 78 struct pf_addr addr; 79 struct pf_addr mask; 80 } a; 81 char ifname[IFNAMSIZ]; 82 char tblname[PF_TABLE_NAME_SIZE]; 83 } v; 84 union { 85 struct pfi_dynaddr *dyn; 86 struct pfr_ktable *tbl; 87 int dyncnt; 88 int tblcnt; 89 } p; 90 u_int8_t type; /* PF_ADDR_* */ 91 u_int8_t iflags; /* PFI_AFLAG_* */ 92 }; 93 94 #ifdef _KERNEL 95 96 struct pfi_dynaddr { 97 TAILQ_ENTRY(pfi_dynaddr) entry; 98 struct pf_addr pfid_addr4; 99 struct pf_addr pfid_mask4; 100 struct pf_addr pfid_addr6; 101 struct pf_addr pfid_mask6; 102 struct pfr_ktable *pfid_kt; 103 struct pfi_kif *pfid_kif; 104 int pfid_net; /* mask or 128 */ 105 int pfid_acnt4; /* address count IPv4 */ 106 int pfid_acnt6; /* address count IPv6 */ 107 sa_family_t pfid_af; /* rule af */ 108 u_int8_t pfid_iflags; /* PFI_AFLAG_* */ 109 }; 110 111 /* 112 * Address manipulation macros 113 */ 114 #define HTONL(x) (x) = htonl((__uint32_t)(x)) 115 #define HTONS(x) (x) = htons((__uint16_t)(x)) 116 #define NTOHL(x) (x) = ntohl((__uint32_t)(x)) 117 #define NTOHS(x) (x) = ntohs((__uint16_t)(x)) 118 119 #define PF_NAME "pf" 120 121 #define PF_HASHROW_ASSERT(h) mtx_assert(&(h)->lock, MA_OWNED) 122 #define PF_HASHROW_LOCK(h) mtx_lock(&(h)->lock) 123 #define PF_HASHROW_UNLOCK(h) mtx_unlock(&(h)->lock) 124 125 #define PF_STATE_LOCK(s) \ 126 do { \ 127 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(s)]; \ 128 PF_HASHROW_LOCK(_ih); \ 129 } while (0) 130 131 #define PF_STATE_UNLOCK(s) \ 132 do { \ 133 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH((s))]; \ 134 PF_HASHROW_UNLOCK(_ih); \ 135 } while (0) 136 137 #ifdef INVARIANTS 138 #define PF_STATE_LOCK_ASSERT(s) \ 139 do { \ 140 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(s)]; \ 141 PF_HASHROW_ASSERT(_ih); \ 142 } while (0) 143 #else /* !INVARIANTS */ 144 #define PF_STATE_LOCK_ASSERT(s) do {} while (0) 145 #endif /* INVARIANTS */ 146 147 extern struct mtx pf_unlnkdrules_mtx; 148 #define PF_UNLNKDRULES_LOCK() mtx_lock(&pf_unlnkdrules_mtx) 149 #define PF_UNLNKDRULES_UNLOCK() mtx_unlock(&pf_unlnkdrules_mtx) 150 151 extern struct rmlock pf_rules_lock; 152 #define PF_RULES_RLOCK_TRACKER struct rm_priotracker _pf_rules_tracker 153 #define PF_RULES_RLOCK() rm_rlock(&pf_rules_lock, &_pf_rules_tracker) 154 #define PF_RULES_RUNLOCK() rm_runlock(&pf_rules_lock, &_pf_rules_tracker) 155 #define PF_RULES_WLOCK() rm_wlock(&pf_rules_lock) 156 #define PF_RULES_WUNLOCK() rm_wunlock(&pf_rules_lock) 157 #define PF_RULES_ASSERT() rm_assert(&pf_rules_lock, RA_LOCKED) 158 #define PF_RULES_RASSERT() rm_assert(&pf_rules_lock, RA_RLOCKED) 159 #define PF_RULES_WASSERT() rm_assert(&pf_rules_lock, RA_WLOCKED) 160 161 #define PF_MODVER 1 162 #define PFLOG_MODVER 1 163 #define PFSYNC_MODVER 1 164 165 #define PFLOG_MINVER 1 166 #define PFLOG_PREFVER PFLOG_MODVER 167 #define PFLOG_MAXVER 1 168 #define PFSYNC_MINVER 1 169 #define PFSYNC_PREFVER PFSYNC_MODVER 170 #define PFSYNC_MAXVER 1 171 172 #ifdef INET 173 #ifndef INET6 174 #define PF_INET_ONLY 175 #endif /* ! INET6 */ 176 #endif /* INET */ 177 178 #ifdef INET6 179 #ifndef INET 180 #define PF_INET6_ONLY 181 #endif /* ! INET */ 182 #endif /* INET6 */ 183 184 #ifdef INET 185 #ifdef INET6 186 #define PF_INET_INET6 187 #endif /* INET6 */ 188 #endif /* INET */ 189 190 #else 191 192 #define PF_INET_INET6 193 194 #endif /* _KERNEL */ 195 196 /* Both IPv4 and IPv6 */ 197 #ifdef PF_INET_INET6 198 199 #define PF_AEQ(a, b, c) \ 200 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \ 201 (c == AF_INET6 && (a)->addr32[3] == (b)->addr32[3] && \ 202 (a)->addr32[2] == (b)->addr32[2] && \ 203 (a)->addr32[1] == (b)->addr32[1] && \ 204 (a)->addr32[0] == (b)->addr32[0])) \ 205 206 #define PF_ANEQ(a, b, c) \ 207 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \ 208 (c == AF_INET6 && ((a)->addr32[0] != (b)->addr32[0] || \ 209 (a)->addr32[1] != (b)->addr32[1] || \ 210 (a)->addr32[2] != (b)->addr32[2] || \ 211 (a)->addr32[3] != (b)->addr32[3]))) \ 212 213 #define PF_AZERO(a, c) \ 214 ((c == AF_INET && !(a)->addr32[0]) || \ 215 (c == AF_INET6 && !(a)->addr32[0] && !(a)->addr32[1] && \ 216 !(a)->addr32[2] && !(a)->addr32[3] )) \ 217 218 #define PF_MATCHA(n, a, m, b, f) \ 219 pf_match_addr(n, a, m, b, f) 220 221 #define PF_ACPY(a, b, f) \ 222 pf_addrcpy(a, b, f) 223 224 #define PF_AINC(a, f) \ 225 pf_addr_inc(a, f) 226 227 #define PF_POOLMASK(a, b, c, d, f) \ 228 pf_poolmask(a, b, c, d, f) 229 230 #else 231 232 /* Just IPv6 */ 233 234 #ifdef PF_INET6_ONLY 235 236 #define PF_AEQ(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_ANEQ(a, b, c) \ 243 ((a)->addr32[3] != (b)->addr32[3] || \ 244 (a)->addr32[2] != (b)->addr32[2] || \ 245 (a)->addr32[1] != (b)->addr32[1] || \ 246 (a)->addr32[0] != (b)->addr32[0]) \ 247 248 #define PF_AZERO(a, c) \ 249 (!(a)->addr32[0] && \ 250 !(a)->addr32[1] && \ 251 !(a)->addr32[2] && \ 252 !(a)->addr32[3] ) \ 253 254 #define PF_MATCHA(n, a, m, b, f) \ 255 pf_match_addr(n, a, m, b, f) 256 257 #define PF_ACPY(a, b, f) \ 258 pf_addrcpy(a, b, f) 259 260 #define PF_AINC(a, f) \ 261 pf_addr_inc(a, f) 262 263 #define PF_POOLMASK(a, b, c, d, f) \ 264 pf_poolmask(a, b, c, d, f) 265 266 #else 267 268 /* Just IPv4 */ 269 #ifdef PF_INET_ONLY 270 271 #define PF_AEQ(a, b, c) \ 272 ((a)->addr32[0] == (b)->addr32[0]) 273 274 #define PF_ANEQ(a, b, c) \ 275 ((a)->addr32[0] != (b)->addr32[0]) 276 277 #define PF_AZERO(a, c) \ 278 (!(a)->addr32[0]) 279 280 #define PF_MATCHA(n, a, m, b, f) \ 281 pf_match_addr(n, a, m, b, f) 282 283 #define PF_ACPY(a, b, f) \ 284 (a)->v4.s_addr = (b)->v4.s_addr 285 286 #define PF_AINC(a, f) \ 287 do { \ 288 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \ 289 } while (0) 290 291 #define PF_POOLMASK(a, b, c, d, f) \ 292 do { \ 293 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \ 294 (((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \ 295 } while (0) 296 297 #endif /* PF_INET_ONLY */ 298 #endif /* PF_INET6_ONLY */ 299 #endif /* PF_INET_INET6 */ 300 301 /* 302 * XXX callers not FIB-aware in our version of pf yet. 303 * OpenBSD fixed it later it seems, 2010/05/07 13:33:16 claudio. 304 */ 305 #define PF_MISMATCHAW(aw, x, af, neg, ifp, rtid) \ 306 ( \ 307 (((aw)->type == PF_ADDR_NOROUTE && \ 308 pf_routable((x), (af), NULL, (rtid))) || \ 309 (((aw)->type == PF_ADDR_URPFFAILED && (ifp) != NULL && \ 310 pf_routable((x), (af), (ifp), (rtid))) || \ 311 ((aw)->type == PF_ADDR_TABLE && \ 312 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \ 313 ((aw)->type == PF_ADDR_DYNIFTL && \ 314 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \ 315 ((aw)->type == PF_ADDR_RANGE && \ 316 !pf_match_addr_range(&(aw)->v.a.addr, \ 317 &(aw)->v.a.mask, (x), (af))) || \ 318 ((aw)->type == PF_ADDR_ADDRMASK && \ 319 !PF_AZERO(&(aw)->v.a.mask, (af)) && \ 320 !PF_MATCHA(0, &(aw)->v.a.addr, \ 321 &(aw)->v.a.mask, (x), (af))))) != \ 322 (neg) \ 323 ) 324 325 326 struct pf_rule_uid { 327 uid_t uid[2]; 328 u_int8_t op; 329 }; 330 331 struct pf_rule_gid { 332 uid_t gid[2]; 333 u_int8_t op; 334 }; 335 336 struct pf_rule_addr { 337 struct pf_addr_wrap addr; 338 u_int16_t port[2]; 339 u_int8_t neg; 340 u_int8_t port_op; 341 }; 342 343 struct pf_pooladdr { 344 struct pf_addr_wrap addr; 345 TAILQ_ENTRY(pf_pooladdr) entries; 346 char ifname[IFNAMSIZ]; 347 struct pfi_kif *kif; 348 }; 349 350 TAILQ_HEAD(pf_palist, pf_pooladdr); 351 352 struct pf_poolhashkey { 353 union { 354 u_int8_t key8[16]; 355 u_int16_t key16[8]; 356 u_int32_t key32[4]; 357 } pfk; /* 128-bit hash key */ 358 #define key8 pfk.key8 359 #define key16 pfk.key16 360 #define key32 pfk.key32 361 }; 362 363 struct pf_pool { 364 struct pf_palist list; 365 struct pf_pooladdr *cur; 366 struct pf_poolhashkey key; 367 struct pf_addr counter; 368 int tblidx; 369 u_int16_t proxy_port[2]; 370 u_int8_t opts; 371 }; 372 373 374 /* A packed Operating System description for fingerprinting */ 375 typedef u_int32_t pf_osfp_t; 376 #define PF_OSFP_ANY ((pf_osfp_t)0) 377 #define PF_OSFP_UNKNOWN ((pf_osfp_t)-1) 378 #define PF_OSFP_NOMATCH ((pf_osfp_t)-2) 379 380 struct pf_osfp_entry { 381 SLIST_ENTRY(pf_osfp_entry) fp_entry; 382 pf_osfp_t fp_os; 383 int fp_enflags; 384 #define PF_OSFP_EXPANDED 0x001 /* expanded entry */ 385 #define PF_OSFP_GENERIC 0x002 /* generic signature */ 386 #define PF_OSFP_NODETAIL 0x004 /* no p0f details */ 387 #define PF_OSFP_LEN 32 388 char fp_class_nm[PF_OSFP_LEN]; 389 char fp_version_nm[PF_OSFP_LEN]; 390 char fp_subtype_nm[PF_OSFP_LEN]; 391 }; 392 #define PF_OSFP_ENTRY_EQ(a, b) \ 393 ((a)->fp_os == (b)->fp_os && \ 394 memcmp((a)->fp_class_nm, (b)->fp_class_nm, PF_OSFP_LEN) == 0 && \ 395 memcmp((a)->fp_version_nm, (b)->fp_version_nm, PF_OSFP_LEN) == 0 && \ 396 memcmp((a)->fp_subtype_nm, (b)->fp_subtype_nm, PF_OSFP_LEN) == 0) 397 398 /* handle pf_osfp_t packing */ 399 #define _FP_RESERVED_BIT 1 /* For the special negative #defines */ 400 #define _FP_UNUSED_BITS 1 401 #define _FP_CLASS_BITS 10 /* OS Class (Windows, Linux) */ 402 #define _FP_VERSION_BITS 10 /* OS version (95, 98, NT, 2.4.54, 3.2) */ 403 #define _FP_SUBTYPE_BITS 10 /* patch level (NT SP4, SP3, ECN patch) */ 404 #define PF_OSFP_UNPACK(osfp, class, version, subtype) do { \ 405 (class) = ((osfp) >> (_FP_VERSION_BITS+_FP_SUBTYPE_BITS)) & \ 406 ((1 << _FP_CLASS_BITS) - 1); \ 407 (version) = ((osfp) >> _FP_SUBTYPE_BITS) & \ 408 ((1 << _FP_VERSION_BITS) - 1);\ 409 (subtype) = (osfp) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 410 } while(0) 411 #define PF_OSFP_PACK(osfp, class, version, subtype) do { \ 412 (osfp) = ((class) & ((1 << _FP_CLASS_BITS) - 1)) << (_FP_VERSION_BITS \ 413 + _FP_SUBTYPE_BITS); \ 414 (osfp) |= ((version) & ((1 << _FP_VERSION_BITS) - 1)) << \ 415 _FP_SUBTYPE_BITS; \ 416 (osfp) |= (subtype) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 417 } while(0) 418 419 /* the fingerprint of an OSes TCP SYN packet */ 420 typedef u_int64_t pf_tcpopts_t; 421 struct pf_os_fingerprint { 422 SLIST_HEAD(pf_osfp_enlist, pf_osfp_entry) fp_oses; /* list of matches */ 423 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 424 u_int16_t fp_wsize; /* TCP window size */ 425 u_int16_t fp_psize; /* ip->ip_len */ 426 u_int16_t fp_mss; /* TCP MSS */ 427 u_int16_t fp_flags; 428 #define PF_OSFP_WSIZE_MOD 0x0001 /* Window modulus */ 429 #define PF_OSFP_WSIZE_DC 0x0002 /* Window don't care */ 430 #define PF_OSFP_WSIZE_MSS 0x0004 /* Window multiple of MSS */ 431 #define PF_OSFP_WSIZE_MTU 0x0008 /* Window multiple of MTU */ 432 #define PF_OSFP_PSIZE_MOD 0x0010 /* packet size modulus */ 433 #define PF_OSFP_PSIZE_DC 0x0020 /* packet size don't care */ 434 #define PF_OSFP_WSCALE 0x0040 /* TCP window scaling */ 435 #define PF_OSFP_WSCALE_MOD 0x0080 /* TCP window scale modulus */ 436 #define PF_OSFP_WSCALE_DC 0x0100 /* TCP window scale dont-care */ 437 #define PF_OSFP_MSS 0x0200 /* TCP MSS */ 438 #define PF_OSFP_MSS_MOD 0x0400 /* TCP MSS modulus */ 439 #define PF_OSFP_MSS_DC 0x0800 /* TCP MSS dont-care */ 440 #define PF_OSFP_DF 0x1000 /* IPv4 don't fragment bit */ 441 #define PF_OSFP_TS0 0x2000 /* Zero timestamp */ 442 #define PF_OSFP_INET6 0x4000 /* IPv6 */ 443 u_int8_t fp_optcnt; /* TCP option count */ 444 u_int8_t fp_wscale; /* TCP window scaling */ 445 u_int8_t fp_ttl; /* IPv4 TTL */ 446 #define PF_OSFP_MAXTTL_OFFSET 40 447 /* TCP options packing */ 448 #define PF_OSFP_TCPOPT_NOP 0x0 /* TCP NOP option */ 449 #define PF_OSFP_TCPOPT_WSCALE 0x1 /* TCP window scaling option */ 450 #define PF_OSFP_TCPOPT_MSS 0x2 /* TCP max segment size opt */ 451 #define PF_OSFP_TCPOPT_SACK 0x3 /* TCP SACK OK option */ 452 #define PF_OSFP_TCPOPT_TS 0x4 /* TCP timestamp option */ 453 #define PF_OSFP_TCPOPT_BITS 3 /* bits used by each option */ 454 #define PF_OSFP_MAX_OPTS \ 455 (sizeof(((struct pf_os_fingerprint *)0)->fp_tcpopts) * 8) \ 456 / PF_OSFP_TCPOPT_BITS 457 458 SLIST_ENTRY(pf_os_fingerprint) fp_next; 459 }; 460 461 struct pf_osfp_ioctl { 462 struct pf_osfp_entry fp_os; 463 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 464 u_int16_t fp_wsize; /* TCP window size */ 465 u_int16_t fp_psize; /* ip->ip_len */ 466 u_int16_t fp_mss; /* TCP MSS */ 467 u_int16_t fp_flags; 468 u_int8_t fp_optcnt; /* TCP option count */ 469 u_int8_t fp_wscale; /* TCP window scaling */ 470 u_int8_t fp_ttl; /* IPv4 TTL */ 471 472 int fp_getnum; /* DIOCOSFPGET number */ 473 }; 474 475 476 union pf_rule_ptr { 477 struct pf_rule *ptr; 478 u_int32_t nr; 479 }; 480 481 #define PF_ANCHOR_NAME_SIZE 64 482 483 struct pf_rule { 484 struct pf_rule_addr src; 485 struct pf_rule_addr dst; 486 #define PF_SKIP_IFP 0 487 #define PF_SKIP_DIR 1 488 #define PF_SKIP_AF 2 489 #define PF_SKIP_PROTO 3 490 #define PF_SKIP_SRC_ADDR 4 491 #define PF_SKIP_SRC_PORT 5 492 #define PF_SKIP_DST_ADDR 6 493 #define PF_SKIP_DST_PORT 7 494 #define PF_SKIP_COUNT 8 495 union pf_rule_ptr skip[PF_SKIP_COUNT]; 496 #define PF_RULE_LABEL_SIZE 64 497 char label[PF_RULE_LABEL_SIZE]; 498 char ifname[IFNAMSIZ]; 499 char qname[PF_QNAME_SIZE]; 500 char pqname[PF_QNAME_SIZE]; 501 #define PF_TAG_NAME_SIZE 64 502 char tagname[PF_TAG_NAME_SIZE]; 503 char match_tagname[PF_TAG_NAME_SIZE]; 504 505 char overload_tblname[PF_TABLE_NAME_SIZE]; 506 507 TAILQ_ENTRY(pf_rule) entries; 508 struct pf_pool rpool; 509 510 u_int64_t evaluations; 511 u_int64_t packets[2]; 512 u_int64_t bytes[2]; 513 514 struct pfi_kif *kif; 515 struct pf_anchor *anchor; 516 struct pfr_ktable *overload_tbl; 517 518 pf_osfp_t os_fingerprint; 519 520 int rtableid; 521 u_int32_t timeout[PFTM_MAX]; 522 u_int32_t max_states; 523 u_int32_t max_src_nodes; 524 u_int32_t max_src_states; 525 u_int32_t max_src_conn; 526 struct { 527 u_int32_t limit; 528 u_int32_t seconds; 529 } max_src_conn_rate; 530 u_int32_t qid; 531 u_int32_t pqid; 532 u_int32_t rt_listid; 533 u_int32_t nr; 534 u_int32_t prob; 535 uid_t cuid; 536 pid_t cpid; 537 538 counter_u64_t states_cur; 539 counter_u64_t states_tot; 540 counter_u64_t src_nodes; 541 542 u_int16_t return_icmp; 543 u_int16_t return_icmp6; 544 u_int16_t max_mss; 545 u_int16_t tag; 546 u_int16_t match_tag; 547 u_int16_t scrub_flags; 548 549 struct pf_rule_uid uid; 550 struct pf_rule_gid gid; 551 552 u_int32_t rule_flag; 553 u_int8_t action; 554 u_int8_t direction; 555 u_int8_t log; 556 u_int8_t logif; 557 u_int8_t quick; 558 u_int8_t ifnot; 559 u_int8_t match_tag_not; 560 u_int8_t natpass; 561 562 #define PF_STATE_NORMAL 0x1 563 #define PF_STATE_MODULATE 0x2 564 #define PF_STATE_SYNPROXY 0x3 565 u_int8_t keep_state; 566 sa_family_t af; 567 u_int8_t proto; 568 u_int8_t type; 569 u_int8_t code; 570 u_int8_t flags; 571 u_int8_t flagset; 572 u_int8_t min_ttl; 573 u_int8_t allow_opts; 574 u_int8_t rt; 575 u_int8_t return_ttl; 576 u_int8_t tos; 577 u_int8_t set_tos; 578 u_int8_t anchor_relative; 579 u_int8_t anchor_wildcard; 580 581 #define PF_FLUSH 0x01 582 #define PF_FLUSH_GLOBAL 0x02 583 u_int8_t flush; 584 #define PF_PRIO_ZERO 0xff /* match "prio 0" packets */ 585 #define PF_PRIO_MAX 7 586 u_int8_t prio; 587 u_int8_t set_prio[2]; 588 589 struct { 590 struct pf_addr addr; 591 u_int16_t port; 592 } divert; 593 594 uint64_t u_states_cur; 595 uint64_t u_states_tot; 596 uint64_t u_src_nodes; 597 }; 598 599 /* rule flags */ 600 #define PFRULE_DROP 0x0000 601 #define PFRULE_RETURNRST 0x0001 602 #define PFRULE_FRAGMENT 0x0002 603 #define PFRULE_RETURNICMP 0x0004 604 #define PFRULE_RETURN 0x0008 605 #define PFRULE_NOSYNC 0x0010 606 #define PFRULE_SRCTRACK 0x0020 /* track source states */ 607 #define PFRULE_RULESRCTRACK 0x0040 /* per rule */ 608 #define PFRULE_REFS 0x0080 /* rule has references */ 609 610 /* scrub flags */ 611 #define PFRULE_NODF 0x0100 612 #define PFRULE_RANDOMID 0x0800 613 #define PFRULE_REASSEMBLE_TCP 0x1000 614 #define PFRULE_SET_TOS 0x2000 615 616 /* rule flags again */ 617 #define PFRULE_IFBOUND 0x00010000 /* if-bound */ 618 #define PFRULE_STATESLOPPY 0x00020000 /* sloppy state tracking */ 619 620 #define PFSTATE_HIWAT 10000 /* default state table size */ 621 #define PFSTATE_ADAPT_START 6000 /* default adaptive timeout start */ 622 #define PFSTATE_ADAPT_END 12000 /* default adaptive timeout end */ 623 624 625 struct pf_threshold { 626 u_int32_t limit; 627 #define PF_THRESHOLD_MULT 1000 628 #define PF_THRESHOLD_MAX 0xffffffff / PF_THRESHOLD_MULT 629 u_int32_t seconds; 630 u_int32_t count; 631 u_int32_t last; 632 }; 633 634 struct pf_src_node { 635 LIST_ENTRY(pf_src_node) entry; 636 struct pf_addr addr; 637 struct pf_addr raddr; 638 union pf_rule_ptr rule; 639 struct pfi_kif *kif; 640 u_int64_t bytes[2]; 641 u_int64_t packets[2]; 642 u_int32_t states; 643 u_int32_t conn; 644 struct pf_threshold conn_rate; 645 u_int32_t creation; 646 u_int32_t expire; 647 sa_family_t af; 648 u_int8_t ruletype; 649 }; 650 651 #define PFSNODE_HIWAT 10000 /* default source node table size */ 652 653 struct pf_state_scrub { 654 struct timeval pfss_last; /* time received last packet */ 655 u_int32_t pfss_tsecr; /* last echoed timestamp */ 656 u_int32_t pfss_tsval; /* largest timestamp */ 657 u_int32_t pfss_tsval0; /* original timestamp */ 658 u_int16_t pfss_flags; 659 #define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */ 660 #define PFSS_PAWS 0x0010 /* stricter PAWS checks */ 661 #define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */ 662 #define PFSS_DATA_TS 0x0040 /* timestamp on data packets */ 663 #define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */ 664 u_int8_t pfss_ttl; /* stashed TTL */ 665 u_int8_t pad; 666 u_int32_t pfss_ts_mod; /* timestamp modulation */ 667 }; 668 669 struct pf_state_host { 670 struct pf_addr addr; 671 u_int16_t port; 672 u_int16_t pad; 673 }; 674 675 struct pf_state_peer { 676 struct pf_state_scrub *scrub; /* state is scrubbed */ 677 u_int32_t seqlo; /* Max sequence number sent */ 678 u_int32_t seqhi; /* Max the other end ACKd + win */ 679 u_int32_t seqdiff; /* Sequence number modulator */ 680 u_int16_t max_win; /* largest window (pre scaling) */ 681 u_int16_t mss; /* Maximum segment size option */ 682 u_int8_t state; /* active state level */ 683 u_int8_t wscale; /* window scaling factor */ 684 u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */ 685 u_int8_t pad[1]; 686 }; 687 688 /* Keep synced with struct pf_state_key. */ 689 struct pf_state_key_cmp { 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 }; 696 697 struct pf_state_key { 698 struct pf_addr addr[2]; 699 u_int16_t port[2]; 700 sa_family_t af; 701 u_int8_t proto; 702 u_int8_t pad[2]; 703 704 LIST_ENTRY(pf_state_key) entry; 705 TAILQ_HEAD(, pf_state) states[2]; 706 }; 707 708 /* Keep synced with struct pf_state. */ 709 struct pf_state_cmp { 710 u_int64_t id; 711 u_int32_t creatorid; 712 u_int8_t direction; 713 u_int8_t pad[3]; 714 }; 715 716 struct pf_state { 717 u_int64_t id; 718 u_int32_t creatorid; 719 u_int8_t direction; 720 u_int8_t pad[3]; 721 722 u_int refs; 723 TAILQ_ENTRY(pf_state) sync_list; 724 TAILQ_ENTRY(pf_state) key_list[2]; 725 LIST_ENTRY(pf_state) entry; 726 struct pf_state_peer src; 727 struct pf_state_peer dst; 728 union pf_rule_ptr rule; 729 union pf_rule_ptr anchor; 730 union pf_rule_ptr nat_rule; 731 struct pf_addr rt_addr; 732 struct pf_state_key *key[2]; /* addresses stack and wire */ 733 struct pfi_kif *kif; 734 struct pfi_kif *rt_kif; 735 struct pf_src_node *src_node; 736 struct pf_src_node *nat_src_node; 737 u_int64_t packets[2]; 738 u_int64_t bytes[2]; 739 u_int32_t creation; 740 u_int32_t expire; 741 u_int32_t pfsync_time; 742 u_int16_t tag; 743 u_int8_t log; 744 u_int8_t state_flags; 745 #define PFSTATE_ALLOWOPTS 0x01 746 #define PFSTATE_SLOPPY 0x02 747 /* was PFSTATE_PFLOW 0x04 */ 748 #define PFSTATE_NOSYNC 0x08 749 #define PFSTATE_ACK 0x10 750 #define PFSTATE_SETPRIO 0x0200 751 #define PFSTATE_SETMASK (PFSTATE_SETPRIO) 752 u_int8_t timeout; 753 u_int8_t sync_state; /* PFSYNC_S_x */ 754 755 /* XXX */ 756 u_int8_t sync_updates; 757 u_int8_t _tail[3]; 758 }; 759 760 /* 761 * Unified state structures for pulling states out of the kernel 762 * used by pfsync(4) and the pf(4) ioctl. 763 */ 764 struct pfsync_state_scrub { 765 u_int16_t pfss_flags; 766 u_int8_t pfss_ttl; /* stashed TTL */ 767 #define PFSYNC_SCRUB_FLAG_VALID 0x01 768 u_int8_t scrub_flag; 769 u_int32_t pfss_ts_mod; /* timestamp modulation */ 770 } __packed; 771 772 struct pfsync_state_peer { 773 struct pfsync_state_scrub scrub; /* state is scrubbed */ 774 u_int32_t seqlo; /* Max sequence number sent */ 775 u_int32_t seqhi; /* Max the other end ACKd + win */ 776 u_int32_t seqdiff; /* Sequence number modulator */ 777 u_int16_t max_win; /* largest window (pre scaling) */ 778 u_int16_t mss; /* Maximum segment size option */ 779 u_int8_t state; /* active state level */ 780 u_int8_t wscale; /* window scaling factor */ 781 u_int8_t pad[6]; 782 } __packed; 783 784 struct pfsync_state_key { 785 struct pf_addr addr[2]; 786 u_int16_t port[2]; 787 }; 788 789 struct pfsync_state { 790 u_int64_t id; 791 char ifname[IFNAMSIZ]; 792 struct pfsync_state_key key[2]; 793 struct pfsync_state_peer src; 794 struct pfsync_state_peer dst; 795 struct pf_addr rt_addr; 796 u_int32_t rule; 797 u_int32_t anchor; 798 u_int32_t nat_rule; 799 u_int32_t creation; 800 u_int32_t expire; 801 u_int32_t packets[2][2]; 802 u_int32_t bytes[2][2]; 803 u_int32_t creatorid; 804 sa_family_t af; 805 u_int8_t proto; 806 u_int8_t direction; 807 u_int8_t __spare[2]; 808 u_int8_t log; 809 u_int8_t state_flags; 810 u_int8_t timeout; 811 u_int8_t sync_flags; 812 u_int8_t updates; 813 } __packed; 814 815 #ifdef _KERNEL 816 /* pfsync */ 817 typedef int pfsync_state_import_t(struct pfsync_state *, u_int8_t); 818 typedef void pfsync_insert_state_t(struct pf_state *); 819 typedef void pfsync_update_state_t(struct pf_state *); 820 typedef void pfsync_delete_state_t(struct pf_state *); 821 typedef void pfsync_clear_states_t(u_int32_t, const char *); 822 typedef int pfsync_defer_t(struct pf_state *, struct mbuf *); 823 typedef void pfsync_detach_ifnet_t(struct ifnet *); 824 825 VNET_DECLARE(pfsync_state_import_t *, pfsync_state_import_ptr); 826 #define V_pfsync_state_import_ptr VNET(pfsync_state_import_ptr) 827 VNET_DECLARE(pfsync_insert_state_t *, pfsync_insert_state_ptr); 828 #define V_pfsync_insert_state_ptr VNET(pfsync_insert_state_ptr) 829 VNET_DECLARE(pfsync_update_state_t *, pfsync_update_state_ptr); 830 #define V_pfsync_update_state_ptr VNET(pfsync_update_state_ptr) 831 VNET_DECLARE(pfsync_delete_state_t *, pfsync_delete_state_ptr); 832 #define V_pfsync_delete_state_ptr VNET(pfsync_delete_state_ptr) 833 VNET_DECLARE(pfsync_clear_states_t *, pfsync_clear_states_ptr); 834 #define V_pfsync_clear_states_ptr VNET(pfsync_clear_states_ptr) 835 VNET_DECLARE(pfsync_defer_t *, pfsync_defer_ptr); 836 #define V_pfsync_defer_ptr VNET(pfsync_defer_ptr) 837 extern pfsync_detach_ifnet_t *pfsync_detach_ifnet_ptr; 838 839 void pfsync_state_export(struct pfsync_state *, 840 struct pf_state *); 841 842 /* pflog */ 843 struct pf_ruleset; 844 struct pf_pdesc; 845 typedef int pflog_packet_t(struct pfi_kif *, struct mbuf *, sa_family_t, 846 u_int8_t, u_int8_t, struct pf_rule *, struct pf_rule *, 847 struct pf_ruleset *, struct pf_pdesc *, int); 848 extern pflog_packet_t *pflog_packet_ptr; 849 850 #endif /* _KERNEL */ 851 852 #define PFSYNC_FLAG_SRCNODE 0x04 853 #define PFSYNC_FLAG_NATSRCNODE 0x08 854 855 /* for copies to/from network byte order */ 856 /* ioctl interface also uses network byte order */ 857 #define pf_state_peer_hton(s,d) do { \ 858 (d)->seqlo = htonl((s)->seqlo); \ 859 (d)->seqhi = htonl((s)->seqhi); \ 860 (d)->seqdiff = htonl((s)->seqdiff); \ 861 (d)->max_win = htons((s)->max_win); \ 862 (d)->mss = htons((s)->mss); \ 863 (d)->state = (s)->state; \ 864 (d)->wscale = (s)->wscale; \ 865 if ((s)->scrub) { \ 866 (d)->scrub.pfss_flags = \ 867 htons((s)->scrub->pfss_flags & PFSS_TIMESTAMP); \ 868 (d)->scrub.pfss_ttl = (s)->scrub->pfss_ttl; \ 869 (d)->scrub.pfss_ts_mod = htonl((s)->scrub->pfss_ts_mod);\ 870 (d)->scrub.scrub_flag = PFSYNC_SCRUB_FLAG_VALID; \ 871 } \ 872 } while (0) 873 874 #define pf_state_peer_ntoh(s,d) do { \ 875 (d)->seqlo = ntohl((s)->seqlo); \ 876 (d)->seqhi = ntohl((s)->seqhi); \ 877 (d)->seqdiff = ntohl((s)->seqdiff); \ 878 (d)->max_win = ntohs((s)->max_win); \ 879 (d)->mss = ntohs((s)->mss); \ 880 (d)->state = (s)->state; \ 881 (d)->wscale = (s)->wscale; \ 882 if ((s)->scrub.scrub_flag == PFSYNC_SCRUB_FLAG_VALID && \ 883 (d)->scrub != NULL) { \ 884 (d)->scrub->pfss_flags = \ 885 ntohs((s)->scrub.pfss_flags) & PFSS_TIMESTAMP; \ 886 (d)->scrub->pfss_ttl = (s)->scrub.pfss_ttl; \ 887 (d)->scrub->pfss_ts_mod = ntohl((s)->scrub.pfss_ts_mod);\ 888 } \ 889 } while (0) 890 891 #define pf_state_counter_hton(s,d) do { \ 892 d[0] = htonl((s>>32)&0xffffffff); \ 893 d[1] = htonl(s&0xffffffff); \ 894 } while (0) 895 896 #define pf_state_counter_from_pfsync(s) \ 897 (((u_int64_t)(s[0])<<32) | (u_int64_t)(s[1])) 898 899 #define pf_state_counter_ntoh(s,d) do { \ 900 d = ntohl(s[0]); \ 901 d = d<<32; \ 902 d += ntohl(s[1]); \ 903 } while (0) 904 905 TAILQ_HEAD(pf_rulequeue, pf_rule); 906 907 struct pf_anchor; 908 909 struct pf_ruleset { 910 struct { 911 struct pf_rulequeue queues[2]; 912 struct { 913 struct pf_rulequeue *ptr; 914 struct pf_rule **ptr_array; 915 u_int32_t rcount; 916 u_int32_t ticket; 917 int open; 918 } active, inactive; 919 } rules[PF_RULESET_MAX]; 920 struct pf_anchor *anchor; 921 u_int32_t tticket; 922 int tables; 923 int topen; 924 }; 925 926 RB_HEAD(pf_anchor_global, pf_anchor); 927 RB_HEAD(pf_anchor_node, pf_anchor); 928 struct pf_anchor { 929 RB_ENTRY(pf_anchor) entry_global; 930 RB_ENTRY(pf_anchor) entry_node; 931 struct pf_anchor *parent; 932 struct pf_anchor_node children; 933 char name[PF_ANCHOR_NAME_SIZE]; 934 char path[MAXPATHLEN]; 935 struct pf_ruleset ruleset; 936 int refcnt; /* anchor rules */ 937 int match; /* XXX: used for pfctl black magic */ 938 }; 939 RB_PROTOTYPE(pf_anchor_global, pf_anchor, entry_global, pf_anchor_compare); 940 RB_PROTOTYPE(pf_anchor_node, pf_anchor, entry_node, pf_anchor_compare); 941 942 #define PF_RESERVED_ANCHOR "_pf" 943 944 #define PFR_TFLAG_PERSIST 0x00000001 945 #define PFR_TFLAG_CONST 0x00000002 946 #define PFR_TFLAG_ACTIVE 0x00000004 947 #define PFR_TFLAG_INACTIVE 0x00000008 948 #define PFR_TFLAG_REFERENCED 0x00000010 949 #define PFR_TFLAG_REFDANCHOR 0x00000020 950 #define PFR_TFLAG_COUNTERS 0x00000040 951 /* Adjust masks below when adding flags. */ 952 #define PFR_TFLAG_USRMASK (PFR_TFLAG_PERSIST | \ 953 PFR_TFLAG_CONST | \ 954 PFR_TFLAG_COUNTERS) 955 #define PFR_TFLAG_SETMASK (PFR_TFLAG_ACTIVE | \ 956 PFR_TFLAG_INACTIVE | \ 957 PFR_TFLAG_REFERENCED | \ 958 PFR_TFLAG_REFDANCHOR) 959 #define PFR_TFLAG_ALLMASK (PFR_TFLAG_PERSIST | \ 960 PFR_TFLAG_CONST | \ 961 PFR_TFLAG_ACTIVE | \ 962 PFR_TFLAG_INACTIVE | \ 963 PFR_TFLAG_REFERENCED | \ 964 PFR_TFLAG_REFDANCHOR | \ 965 PFR_TFLAG_COUNTERS) 966 967 struct pf_anchor_stackframe; 968 969 struct pfr_table { 970 char pfrt_anchor[MAXPATHLEN]; 971 char pfrt_name[PF_TABLE_NAME_SIZE]; 972 u_int32_t pfrt_flags; 973 u_int8_t pfrt_fback; 974 }; 975 976 enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED, 977 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE, 978 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_NOCOUNT, PFR_FB_MAX }; 979 980 struct pfr_addr { 981 union { 982 struct in_addr _pfra_ip4addr; 983 struct in6_addr _pfra_ip6addr; 984 } pfra_u; 985 u_int8_t pfra_af; 986 u_int8_t pfra_net; 987 u_int8_t pfra_not; 988 u_int8_t pfra_fback; 989 }; 990 #define pfra_ip4addr pfra_u._pfra_ip4addr 991 #define pfra_ip6addr pfra_u._pfra_ip6addr 992 993 enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX }; 994 enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX }; 995 #define PFR_OP_XPASS PFR_OP_ADDR_MAX 996 997 struct pfr_astats { 998 struct pfr_addr pfras_a; 999 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1000 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1001 long pfras_tzero; 1002 }; 1003 1004 enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX }; 1005 1006 struct pfr_tstats { 1007 struct pfr_table pfrts_t; 1008 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1009 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1010 u_int64_t pfrts_match; 1011 u_int64_t pfrts_nomatch; 1012 long pfrts_tzero; 1013 int pfrts_cnt; 1014 int pfrts_refcnt[PFR_REFCNT_MAX]; 1015 }; 1016 1017 struct pfr_ktstats { 1018 struct pfr_table pfrts_t; 1019 counter_u64_t pfrkts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1020 counter_u64_t pfrkts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1021 counter_u64_t pfrkts_match; 1022 counter_u64_t pfrkts_nomatch; 1023 long pfrkts_tzero; 1024 int pfrkts_cnt; 1025 int pfrkts_refcnt[PFR_REFCNT_MAX]; 1026 }; 1027 #define pfrts_name pfrts_t.pfrt_name 1028 #define pfrts_flags pfrts_t.pfrt_flags 1029 1030 #ifndef _SOCKADDR_UNION_DEFINED 1031 #define _SOCKADDR_UNION_DEFINED 1032 union sockaddr_union { 1033 struct sockaddr sa; 1034 struct sockaddr_in sin; 1035 struct sockaddr_in6 sin6; 1036 }; 1037 #endif /* _SOCKADDR_UNION_DEFINED */ 1038 1039 struct pfr_kcounters { 1040 counter_u64_t pfrkc_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1041 counter_u64_t pfrkc_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1042 long pfrkc_tzero; 1043 }; 1044 1045 SLIST_HEAD(pfr_kentryworkq, pfr_kentry); 1046 struct pfr_kentry { 1047 struct radix_node pfrke_node[2]; 1048 union sockaddr_union pfrke_sa; 1049 SLIST_ENTRY(pfr_kentry) pfrke_workq; 1050 struct pfr_kcounters pfrke_counters; 1051 u_int8_t pfrke_af; 1052 u_int8_t pfrke_net; 1053 u_int8_t pfrke_not; 1054 u_int8_t pfrke_mark; 1055 }; 1056 1057 SLIST_HEAD(pfr_ktableworkq, pfr_ktable); 1058 RB_HEAD(pfr_ktablehead, pfr_ktable); 1059 struct pfr_ktable { 1060 struct pfr_ktstats pfrkt_kts; 1061 RB_ENTRY(pfr_ktable) pfrkt_tree; 1062 SLIST_ENTRY(pfr_ktable) pfrkt_workq; 1063 struct radix_node_head *pfrkt_ip4; 1064 struct radix_node_head *pfrkt_ip6; 1065 struct pfr_ktable *pfrkt_shadow; 1066 struct pfr_ktable *pfrkt_root; 1067 struct pf_ruleset *pfrkt_rs; 1068 long pfrkt_larg; 1069 int pfrkt_nflags; 1070 }; 1071 #define pfrkt_t pfrkt_kts.pfrts_t 1072 #define pfrkt_name pfrkt_t.pfrt_name 1073 #define pfrkt_anchor pfrkt_t.pfrt_anchor 1074 #define pfrkt_ruleset pfrkt_t.pfrt_ruleset 1075 #define pfrkt_flags pfrkt_t.pfrt_flags 1076 #define pfrkt_cnt pfrkt_kts.pfrkts_cnt 1077 #define pfrkt_refcnt pfrkt_kts.pfrkts_refcnt 1078 #define pfrkt_packets pfrkt_kts.pfrkts_packets 1079 #define pfrkt_bytes pfrkt_kts.pfrkts_bytes 1080 #define pfrkt_match pfrkt_kts.pfrkts_match 1081 #define pfrkt_nomatch pfrkt_kts.pfrkts_nomatch 1082 #define pfrkt_tzero pfrkt_kts.pfrkts_tzero 1083 1084 /* keep synced with pfi_kif, used in RB_FIND */ 1085 struct pfi_kif_cmp { 1086 char pfik_name[IFNAMSIZ]; 1087 }; 1088 1089 struct pfi_kif { 1090 char pfik_name[IFNAMSIZ]; 1091 union { 1092 RB_ENTRY(pfi_kif) _pfik_tree; 1093 LIST_ENTRY(pfi_kif) _pfik_list; 1094 } _pfik_glue; 1095 #define pfik_tree _pfik_glue._pfik_tree 1096 #define pfik_list _pfik_glue._pfik_list 1097 u_int64_t pfik_packets[2][2][2]; 1098 u_int64_t pfik_bytes[2][2][2]; 1099 u_int32_t pfik_tzero; 1100 u_int pfik_flags; 1101 struct ifnet *pfik_ifp; 1102 struct ifg_group *pfik_group; 1103 u_int pfik_rulerefs; 1104 TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs; 1105 }; 1106 1107 #define PFI_IFLAG_REFS 0x0001 /* has state references */ 1108 #define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */ 1109 1110 struct pf_pdesc { 1111 struct { 1112 int done; 1113 uid_t uid; 1114 gid_t gid; 1115 } lookup; 1116 u_int64_t tot_len; /* Make Mickey money */ 1117 union { 1118 struct tcphdr *tcp; 1119 struct udphdr *udp; 1120 struct icmp *icmp; 1121 #ifdef INET6 1122 struct icmp6_hdr *icmp6; 1123 #endif /* INET6 */ 1124 void *any; 1125 } hdr; 1126 1127 struct pf_rule *nat_rule; /* nat/rdr rule applied to packet */ 1128 struct pf_addr *src; /* src address */ 1129 struct pf_addr *dst; /* dst address */ 1130 u_int16_t *sport; 1131 u_int16_t *dport; 1132 struct pf_mtag *pf_mtag; 1133 1134 u_int32_t p_len; /* total length of payload */ 1135 1136 u_int16_t *ip_sum; 1137 u_int16_t *proto_sum; 1138 u_int16_t flags; /* Let SCRUB trigger behavior in 1139 * state code. Easier than tags */ 1140 #define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */ 1141 #define PFDESC_IP_REAS 0x0002 /* IP frags would've been reassembled */ 1142 sa_family_t af; 1143 u_int8_t proto; 1144 u_int8_t tos; 1145 u_int8_t dir; /* direction */ 1146 u_int8_t sidx; /* key index for source */ 1147 u_int8_t didx; /* key index for destination */ 1148 }; 1149 1150 /* flags for RDR options */ 1151 #define PF_DPORT_RANGE 0x01 /* Dest port uses range */ 1152 #define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */ 1153 1154 /* UDP state enumeration */ 1155 #define PFUDPS_NO_TRAFFIC 0 1156 #define PFUDPS_SINGLE 1 1157 #define PFUDPS_MULTIPLE 2 1158 1159 #define PFUDPS_NSTATES 3 /* number of state levels */ 1160 1161 #define PFUDPS_NAMES { \ 1162 "NO_TRAFFIC", \ 1163 "SINGLE", \ 1164 "MULTIPLE", \ 1165 NULL \ 1166 } 1167 1168 /* Other protocol state enumeration */ 1169 #define PFOTHERS_NO_TRAFFIC 0 1170 #define PFOTHERS_SINGLE 1 1171 #define PFOTHERS_MULTIPLE 2 1172 1173 #define PFOTHERS_NSTATES 3 /* number of state levels */ 1174 1175 #define PFOTHERS_NAMES { \ 1176 "NO_TRAFFIC", \ 1177 "SINGLE", \ 1178 "MULTIPLE", \ 1179 NULL \ 1180 } 1181 1182 #define ACTION_SET(a, x) \ 1183 do { \ 1184 if ((a) != NULL) \ 1185 *(a) = (x); \ 1186 } while (0) 1187 1188 #define REASON_SET(a, x) \ 1189 do { \ 1190 if ((a) != NULL) \ 1191 *(a) = (x); \ 1192 if (x < PFRES_MAX) \ 1193 counter_u64_add(V_pf_status.counters[x], 1); \ 1194 } while (0) 1195 1196 struct pf_kstatus { 1197 counter_u64_t counters[PFRES_MAX]; /* reason for passing/dropping */ 1198 counter_u64_t lcounters[LCNT_MAX]; /* limit counters */ 1199 counter_u64_t fcounters[FCNT_MAX]; /* state operation counters */ 1200 counter_u64_t scounters[SCNT_MAX]; /* src_node operation counters */ 1201 uint32_t states; 1202 uint32_t src_nodes; 1203 uint32_t running; 1204 uint32_t since; 1205 uint32_t debug; 1206 uint32_t hostid; 1207 char ifname[IFNAMSIZ]; 1208 uint8_t pf_chksum[PF_MD5_DIGEST_LENGTH]; 1209 }; 1210 1211 struct pf_divert { 1212 union { 1213 struct in_addr ipv4; 1214 struct in6_addr ipv6; 1215 } addr; 1216 u_int16_t port; 1217 }; 1218 1219 #define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */ 1220 #define PFR_KENTRY_HIWAT 200000 /* Number of table entries */ 1221 1222 /* 1223 * ioctl parameter structures 1224 */ 1225 1226 struct pfioc_pooladdr { 1227 u_int32_t action; 1228 u_int32_t ticket; 1229 u_int32_t nr; 1230 u_int32_t r_num; 1231 u_int8_t r_action; 1232 u_int8_t r_last; 1233 u_int8_t af; 1234 char anchor[MAXPATHLEN]; 1235 struct pf_pooladdr addr; 1236 }; 1237 1238 struct pfioc_rule { 1239 u_int32_t action; 1240 u_int32_t ticket; 1241 u_int32_t pool_ticket; 1242 u_int32_t nr; 1243 char anchor[MAXPATHLEN]; 1244 char anchor_call[MAXPATHLEN]; 1245 struct pf_rule rule; 1246 }; 1247 1248 struct pfioc_natlook { 1249 struct pf_addr saddr; 1250 struct pf_addr daddr; 1251 struct pf_addr rsaddr; 1252 struct pf_addr rdaddr; 1253 u_int16_t sport; 1254 u_int16_t dport; 1255 u_int16_t rsport; 1256 u_int16_t rdport; 1257 sa_family_t af; 1258 u_int8_t proto; 1259 u_int8_t direction; 1260 }; 1261 1262 struct pfioc_state { 1263 struct pfsync_state state; 1264 }; 1265 1266 struct pfioc_src_node_kill { 1267 sa_family_t psnk_af; 1268 struct pf_rule_addr psnk_src; 1269 struct pf_rule_addr psnk_dst; 1270 u_int psnk_killed; 1271 }; 1272 1273 struct pfioc_state_kill { 1274 struct pf_state_cmp psk_pfcmp; 1275 sa_family_t psk_af; 1276 int psk_proto; 1277 struct pf_rule_addr psk_src; 1278 struct pf_rule_addr psk_dst; 1279 char psk_ifname[IFNAMSIZ]; 1280 char psk_label[PF_RULE_LABEL_SIZE]; 1281 u_int psk_killed; 1282 }; 1283 1284 struct pfioc_states { 1285 int ps_len; 1286 union { 1287 caddr_t psu_buf; 1288 struct pfsync_state *psu_states; 1289 } ps_u; 1290 #define ps_buf ps_u.psu_buf 1291 #define ps_states ps_u.psu_states 1292 }; 1293 1294 struct pfioc_src_nodes { 1295 int psn_len; 1296 union { 1297 caddr_t psu_buf; 1298 struct pf_src_node *psu_src_nodes; 1299 } psn_u; 1300 #define psn_buf psn_u.psu_buf 1301 #define psn_src_nodes psn_u.psu_src_nodes 1302 }; 1303 1304 struct pfioc_if { 1305 char ifname[IFNAMSIZ]; 1306 }; 1307 1308 struct pfioc_tm { 1309 int timeout; 1310 int seconds; 1311 }; 1312 1313 struct pfioc_limit { 1314 int index; 1315 unsigned limit; 1316 }; 1317 1318 struct pfioc_altq { 1319 u_int32_t action; 1320 u_int32_t ticket; 1321 u_int32_t nr; 1322 struct pf_altq altq; 1323 }; 1324 1325 struct pfioc_qstats { 1326 u_int32_t ticket; 1327 u_int32_t nr; 1328 void *buf; 1329 int nbytes; 1330 u_int8_t scheduler; 1331 }; 1332 1333 struct pfioc_ruleset { 1334 u_int32_t nr; 1335 char path[MAXPATHLEN]; 1336 char name[PF_ANCHOR_NAME_SIZE]; 1337 }; 1338 1339 #define PF_RULESET_ALTQ (PF_RULESET_MAX) 1340 #define PF_RULESET_TABLE (PF_RULESET_MAX+1) 1341 struct pfioc_trans { 1342 int size; /* number of elements */ 1343 int esize; /* size of each element in bytes */ 1344 struct pfioc_trans_e { 1345 int rs_num; 1346 char anchor[MAXPATHLEN]; 1347 u_int32_t ticket; 1348 } *array; 1349 }; 1350 1351 #define PFR_FLAG_ATOMIC 0x00000001 /* unused */ 1352 #define PFR_FLAG_DUMMY 0x00000002 1353 #define PFR_FLAG_FEEDBACK 0x00000004 1354 #define PFR_FLAG_CLSTATS 0x00000008 1355 #define PFR_FLAG_ADDRSTOO 0x00000010 1356 #define PFR_FLAG_REPLACE 0x00000020 1357 #define PFR_FLAG_ALLRSETS 0x00000040 1358 #define PFR_FLAG_ALLMASK 0x0000007F 1359 #ifdef _KERNEL 1360 #define PFR_FLAG_USERIOCTL 0x10000000 1361 #endif 1362 1363 struct pfioc_table { 1364 struct pfr_table pfrio_table; 1365 void *pfrio_buffer; 1366 int pfrio_esize; 1367 int pfrio_size; 1368 int pfrio_size2; 1369 int pfrio_nadd; 1370 int pfrio_ndel; 1371 int pfrio_nchange; 1372 int pfrio_flags; 1373 u_int32_t pfrio_ticket; 1374 }; 1375 #define pfrio_exists pfrio_nadd 1376 #define pfrio_nzero pfrio_nadd 1377 #define pfrio_nmatch pfrio_nadd 1378 #define pfrio_naddr pfrio_size2 1379 #define pfrio_setflag pfrio_size2 1380 #define pfrio_clrflag pfrio_nadd 1381 1382 struct pfioc_iface { 1383 char pfiio_name[IFNAMSIZ]; 1384 void *pfiio_buffer; 1385 int pfiio_esize; 1386 int pfiio_size; 1387 int pfiio_nzero; 1388 int pfiio_flags; 1389 }; 1390 1391 1392 /* 1393 * ioctl operations 1394 */ 1395 1396 #define DIOCSTART _IO ('D', 1) 1397 #define DIOCSTOP _IO ('D', 2) 1398 #define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule) 1399 #define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule) 1400 #define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule) 1401 /* XXX cut 8 - 17 */ 1402 #define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill) 1403 #define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state) 1404 #define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if) 1405 #define DIOCGETSTATUS _IOWR('D', 21, struct pf_status) 1406 #define DIOCCLRSTATUS _IO ('D', 22) 1407 #define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook) 1408 #define DIOCSETDEBUG _IOWR('D', 24, u_int32_t) 1409 #define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states) 1410 #define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule) 1411 /* XXX cut 26 - 28 */ 1412 #define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm) 1413 #define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm) 1414 #define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state) 1415 #define DIOCCLRRULECTRS _IO ('D', 38) 1416 #define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit) 1417 #define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit) 1418 #define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill) 1419 #define DIOCSTARTALTQ _IO ('D', 42) 1420 #define DIOCSTOPALTQ _IO ('D', 43) 1421 #define DIOCADDALTQ _IOWR('D', 45, struct pfioc_altq) 1422 #define DIOCGETALTQS _IOWR('D', 47, struct pfioc_altq) 1423 #define DIOCGETALTQ _IOWR('D', 48, struct pfioc_altq) 1424 #define DIOCCHANGEALTQ _IOWR('D', 49, struct pfioc_altq) 1425 #define DIOCGETQSTATS _IOWR('D', 50, struct pfioc_qstats) 1426 #define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr) 1427 #define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr) 1428 #define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr) 1429 #define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr) 1430 #define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr) 1431 /* XXX cut 55 - 57 */ 1432 #define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset) 1433 #define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset) 1434 #define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table) 1435 #define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table) 1436 #define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table) 1437 #define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table) 1438 #define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table) 1439 #define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table) 1440 #define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table) 1441 #define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table) 1442 #define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table) 1443 #define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table) 1444 #define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table) 1445 #define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table) 1446 #define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table) 1447 #define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table) 1448 #define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table) 1449 #define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table) 1450 #define DIOCOSFPFLUSH _IO('D', 78) 1451 #define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl) 1452 #define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl) 1453 #define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans) 1454 #define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans) 1455 #define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans) 1456 #define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes) 1457 #define DIOCCLRSRCNODES _IO('D', 85) 1458 #define DIOCSETHOSTID _IOWR('D', 86, u_int32_t) 1459 #define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface) 1460 #define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface) 1461 #define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface) 1462 #define DIOCKILLSRCNODES _IOWR('D', 91, struct pfioc_src_node_kill) 1463 struct pf_ifspeed { 1464 char ifname[IFNAMSIZ]; 1465 u_int32_t baudrate; 1466 }; 1467 #define DIOCGIFSPEED _IOWR('D', 92, struct pf_ifspeed) 1468 1469 #ifdef _KERNEL 1470 LIST_HEAD(pf_src_node_list, pf_src_node); 1471 struct pf_srchash { 1472 struct pf_src_node_list nodes; 1473 struct mtx lock; 1474 }; 1475 1476 struct pf_keyhash { 1477 LIST_HEAD(, pf_state_key) keys; 1478 struct mtx lock; 1479 }; 1480 1481 struct pf_idhash { 1482 LIST_HEAD(, pf_state) states; 1483 struct mtx lock; 1484 }; 1485 1486 extern u_long pf_hashmask; 1487 extern u_long pf_srchashmask; 1488 #define PF_HASHSIZ (32768) 1489 #define PF_SRCHASHSIZ (PF_HASHSIZ/4) 1490 VNET_DECLARE(struct pf_keyhash *, pf_keyhash); 1491 VNET_DECLARE(struct pf_idhash *, pf_idhash); 1492 #define V_pf_keyhash VNET(pf_keyhash) 1493 #define V_pf_idhash VNET(pf_idhash) 1494 VNET_DECLARE(struct pf_srchash *, pf_srchash); 1495 #define V_pf_srchash VNET(pf_srchash) 1496 1497 #define PF_IDHASH(s) (be64toh((s)->id) % (pf_hashmask + 1)) 1498 1499 VNET_DECLARE(void *, pf_swi_cookie); 1500 #define V_pf_swi_cookie VNET(pf_swi_cookie) 1501 1502 VNET_DECLARE(uint64_t, pf_stateid[MAXCPU]); 1503 #define V_pf_stateid VNET(pf_stateid) 1504 1505 TAILQ_HEAD(pf_altqqueue, pf_altq); 1506 VNET_DECLARE(struct pf_altqqueue, pf_altqs[2]); 1507 #define V_pf_altqs VNET(pf_altqs) 1508 VNET_DECLARE(struct pf_palist, pf_pabuf); 1509 #define V_pf_pabuf VNET(pf_pabuf) 1510 1511 VNET_DECLARE(u_int32_t, ticket_altqs_active); 1512 #define V_ticket_altqs_active VNET(ticket_altqs_active) 1513 VNET_DECLARE(u_int32_t, ticket_altqs_inactive); 1514 #define V_ticket_altqs_inactive VNET(ticket_altqs_inactive) 1515 VNET_DECLARE(int, altqs_inactive_open); 1516 #define V_altqs_inactive_open VNET(altqs_inactive_open) 1517 VNET_DECLARE(u_int32_t, ticket_pabuf); 1518 #define V_ticket_pabuf VNET(ticket_pabuf) 1519 VNET_DECLARE(struct pf_altqqueue *, pf_altqs_active); 1520 #define V_pf_altqs_active VNET(pf_altqs_active) 1521 VNET_DECLARE(struct pf_altqqueue *, pf_altqs_inactive); 1522 #define V_pf_altqs_inactive VNET(pf_altqs_inactive) 1523 1524 VNET_DECLARE(struct pf_rulequeue, pf_unlinked_rules); 1525 #define V_pf_unlinked_rules VNET(pf_unlinked_rules) 1526 1527 void pf_initialize(void); 1528 void pf_mtag_initialize(void); 1529 void pf_mtag_cleanup(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_unload_vnet_purge(void); 1547 extern void pf_intr(void *); 1548 extern void pf_purge_expired_src_nodes(void); 1549 1550 extern int pf_unlink_state(struct pf_state *, u_int); 1551 #define PF_ENTER_LOCKED 0x00000001 1552 #define PF_RETURN_LOCKED 0x00000002 1553 extern int pf_state_insert(struct pfi_kif *, 1554 struct pf_state_key *, 1555 struct pf_state_key *, 1556 struct pf_state *); 1557 extern void pf_free_state(struct pf_state *); 1558 1559 static __inline void 1560 pf_ref_state(struct pf_state *s) 1561 { 1562 1563 refcount_acquire(&s->refs); 1564 } 1565 1566 static __inline int 1567 pf_release_state(struct pf_state *s) 1568 { 1569 1570 if (refcount_release(&s->refs)) { 1571 pf_free_state(s); 1572 return (1); 1573 } else 1574 return (0); 1575 } 1576 1577 extern struct pf_state *pf_find_state_byid(uint64_t, uint32_t); 1578 extern struct pf_state *pf_find_state_all(struct pf_state_key_cmp *, 1579 u_int, int *); 1580 extern struct pf_src_node *pf_find_src_node(struct pf_addr *, 1581 struct pf_rule *, sa_family_t, int); 1582 extern void pf_unlink_src_node(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 extern u_int16_t pf_proto_cksum_fixup(struct mbuf *, u_int16_t, 1589 u_int16_t, u_int16_t, u_int8_t); 1590 1591 VNET_DECLARE(struct ifnet *, sync_ifp); 1592 #define V_sync_ifp VNET(sync_ifp); 1593 VNET_DECLARE(struct pf_rule, pf_default_rule); 1594 #define V_pf_default_rule VNET(pf_default_rule) 1595 extern void pf_addrcpy(struct pf_addr *, struct pf_addr *, 1596 u_int8_t); 1597 void pf_free_rule(struct pf_rule *); 1598 1599 #ifdef INET 1600 int pf_test(int, int, struct ifnet *, struct mbuf **, struct inpcb *); 1601 int pf_normalize_ip(struct mbuf **, int, struct pfi_kif *, u_short *, 1602 struct pf_pdesc *); 1603 #endif /* INET */ 1604 1605 #ifdef INET6 1606 int pf_test6(int, int, struct ifnet *, struct mbuf **, struct inpcb *); 1607 int pf_normalize_ip6(struct mbuf **, int, struct pfi_kif *, u_short *, 1608 struct pf_pdesc *); 1609 void pf_poolmask(struct pf_addr *, struct pf_addr*, 1610 struct pf_addr *, struct pf_addr *, u_int8_t); 1611 void pf_addr_inc(struct pf_addr *, sa_family_t); 1612 int pf_refragment6(struct ifnet *, struct mbuf **, struct m_tag *); 1613 #endif /* INET6 */ 1614 1615 u_int32_t pf_new_isn(struct pf_state *); 1616 void *pf_pull_hdr(struct mbuf *, int, void *, int, u_short *, u_short *, 1617 sa_family_t); 1618 void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t); 1619 void pf_change_proto_a(struct mbuf *, void *, u_int16_t *, u_int32_t, 1620 u_int8_t); 1621 void pf_change_tcp_a(struct mbuf *, void *, u_int16_t *, u_int32_t); 1622 void pf_send_deferred_syn(struct pf_state *); 1623 int pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *, 1624 struct pf_addr *, sa_family_t); 1625 int pf_match_addr_range(struct pf_addr *, struct pf_addr *, 1626 struct pf_addr *, sa_family_t); 1627 int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t); 1628 1629 void pf_normalize_init(void); 1630 void pf_normalize_cleanup(void); 1631 int pf_normalize_tcp(int, struct pfi_kif *, struct mbuf *, int, int, void *, 1632 struct pf_pdesc *); 1633 void pf_normalize_tcp_cleanup(struct pf_state *); 1634 int pf_normalize_tcp_init(struct mbuf *, int, struct pf_pdesc *, 1635 struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *); 1636 int pf_normalize_tcp_stateful(struct mbuf *, int, struct pf_pdesc *, 1637 u_short *, struct tcphdr *, struct pf_state *, 1638 struct pf_state_peer *, struct pf_state_peer *, int *); 1639 u_int32_t 1640 pf_state_expires(const struct pf_state *); 1641 void pf_purge_expired_fragments(void); 1642 int pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kif *, 1643 int); 1644 int pf_socket_lookup(int, struct pf_pdesc *, struct mbuf *); 1645 struct pf_state_key *pf_alloc_state_key(int); 1646 void pfr_initialize(void); 1647 void pfr_cleanup(void); 1648 int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t); 1649 void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t, 1650 u_int64_t, int, int, int); 1651 int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, sa_family_t); 1652 void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *); 1653 struct pfr_ktable * 1654 pfr_attach_table(struct pf_ruleset *, char *); 1655 void pfr_detach_table(struct pfr_ktable *); 1656 int pfr_clr_tables(struct pfr_table *, int *, int); 1657 int pfr_add_tables(struct pfr_table *, int, int *, int); 1658 int pfr_del_tables(struct pfr_table *, int, int *, int); 1659 int pfr_table_count(struct pfr_table *, int); 1660 int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int); 1661 int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int); 1662 int pfr_clr_tstats(struct pfr_table *, int, int *, int); 1663 int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int); 1664 int pfr_clr_addrs(struct pfr_table *, int *, int); 1665 int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *, long); 1666 int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1667 int); 1668 int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1669 int); 1670 int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1671 int *, int *, int *, int, u_int32_t); 1672 int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int); 1673 int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int); 1674 int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *, 1675 int); 1676 int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1677 int); 1678 int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int); 1679 int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int); 1680 int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int); 1681 int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *, 1682 int *, u_int32_t, int); 1683 1684 MALLOC_DECLARE(PFI_MTYPE); 1685 VNET_DECLARE(struct pfi_kif *, pfi_all); 1686 #define V_pfi_all VNET(pfi_all) 1687 1688 void pfi_initialize(void); 1689 void pfi_initialize_vnet(void); 1690 void pfi_cleanup(void); 1691 void pfi_cleanup_vnet(void); 1692 void pfi_kif_ref(struct pfi_kif *); 1693 void pfi_kif_unref(struct pfi_kif *); 1694 struct pfi_kif *pfi_kif_find(const char *); 1695 struct pfi_kif *pfi_kif_attach(struct pfi_kif *, const char *); 1696 int pfi_kif_match(struct pfi_kif *, struct pfi_kif *); 1697 void pfi_kif_purge(void); 1698 int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *, 1699 sa_family_t); 1700 int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t); 1701 void pfi_dynaddr_remove(struct pfi_dynaddr *); 1702 void pfi_dynaddr_copyout(struct pf_addr_wrap *); 1703 void pfi_update_status(const char *, struct pf_status *); 1704 void pfi_get_ifaces(const char *, struct pfi_kif *, int *); 1705 int pfi_set_flags(const char *, int); 1706 int pfi_clear_flags(const char *, int); 1707 1708 int pf_match_tag(struct mbuf *, struct pf_rule *, int *, int); 1709 int pf_tag_packet(struct mbuf *, struct pf_pdesc *, int); 1710 int pf_addr_cmp(struct pf_addr *, struct pf_addr *, 1711 sa_family_t); 1712 void pf_qid2qname(u_int32_t, char *); 1713 1714 VNET_DECLARE(struct pf_kstatus, pf_status); 1715 #define V_pf_status VNET(pf_status) 1716 1717 struct pf_limit { 1718 uma_zone_t zone; 1719 u_int limit; 1720 }; 1721 VNET_DECLARE(struct pf_limit, pf_limits[PF_LIMIT_MAX]); 1722 #define V_pf_limits VNET(pf_limits) 1723 1724 #endif /* _KERNEL */ 1725 1726 #ifdef _KERNEL 1727 VNET_DECLARE(struct pf_anchor_global, pf_anchors); 1728 #define V_pf_anchors VNET(pf_anchors) 1729 VNET_DECLARE(struct pf_anchor, pf_main_anchor); 1730 #define V_pf_main_anchor VNET(pf_main_anchor) 1731 #define pf_main_ruleset V_pf_main_anchor.ruleset 1732 #endif 1733 1734 /* these ruleset functions can be linked into userland programs (pfctl) */ 1735 int pf_get_ruleset_number(u_int8_t); 1736 void pf_init_ruleset(struct pf_ruleset *); 1737 int pf_anchor_setup(struct pf_rule *, 1738 const struct pf_ruleset *, const char *); 1739 int pf_anchor_copyout(const struct pf_ruleset *, 1740 const struct pf_rule *, struct pfioc_rule *); 1741 void pf_anchor_remove(struct pf_rule *); 1742 void pf_remove_if_empty_ruleset(struct pf_ruleset *); 1743 struct pf_ruleset *pf_find_ruleset(const char *); 1744 struct pf_ruleset *pf_find_or_create_ruleset(const char *); 1745 void pf_rs_initialize(void); 1746 1747 /* The fingerprint functions can be linked into userland programs (tcpdump) */ 1748 int pf_osfp_add(struct pf_osfp_ioctl *); 1749 #ifdef _KERNEL 1750 struct pf_osfp_enlist * 1751 pf_osfp_fingerprint(struct pf_pdesc *, struct mbuf *, int, 1752 const struct tcphdr *); 1753 #endif /* _KERNEL */ 1754 void pf_osfp_flush(void); 1755 int pf_osfp_get(struct pf_osfp_ioctl *); 1756 int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t); 1757 1758 #ifdef _KERNEL 1759 void pf_print_host(struct pf_addr *, u_int16_t, u_int8_t); 1760 1761 void pf_step_into_anchor(struct pf_anchor_stackframe *, int *, 1762 struct pf_ruleset **, int, struct pf_rule **, 1763 struct pf_rule **, int *); 1764 int pf_step_out_of_anchor(struct pf_anchor_stackframe *, int *, 1765 struct pf_ruleset **, int, struct pf_rule **, 1766 struct pf_rule **, int *); 1767 1768 int pf_map_addr(u_int8_t, struct pf_rule *, 1769 struct pf_addr *, struct pf_addr *, 1770 struct pf_addr *, struct pf_src_node **); 1771 struct pf_rule *pf_get_translation(struct pf_pdesc *, struct mbuf *, 1772 int, int, struct pfi_kif *, struct pf_src_node **, 1773 struct pf_state_key **, struct pf_state_key **, 1774 struct pf_addr *, struct pf_addr *, 1775 uint16_t, uint16_t, struct pf_anchor_stackframe *); 1776 1777 struct pf_state_key *pf_state_key_setup(struct pf_pdesc *, struct pf_addr *, 1778 struct pf_addr *, u_int16_t, u_int16_t); 1779 struct pf_state_key *pf_state_key_clone(struct pf_state_key *); 1780 #endif /* _KERNEL */ 1781 1782 #endif /* _NET_PFVAR_H_ */
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