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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: releng/10.2/sys/net/pfvar.h 293893 2016-01-14 09:10:46Z glebius $ 31 */ 32 33 #ifndef _NET_PFVAR_H_ 34 #define _NET_PFVAR_H_ 35 36 #include <sys/param.h> 37 #include <sys/queue.h> 38 #include <sys/counter.h> 39 #include <sys/refcount.h> 40 #include <sys/tree.h> 41 42 #include <net/radix.h> 43 #include <netinet/in.h> 44 45 #include <netpfil/pf/pf.h> 46 #include <netpfil/pf/pf_altq.h> 47 #include <netpfil/pf/pf_mtag.h> 48 49 struct pf_addr { 50 union { 51 struct in_addr v4; 52 struct in6_addr v6; 53 u_int8_t addr8[16]; 54 u_int16_t addr16[8]; 55 u_int32_t addr32[4]; 56 } pfa; /* 128-bit address */ 57 #define v4 pfa.v4 58 #define v6 pfa.v6 59 #define addr8 pfa.addr8 60 #define addr16 pfa.addr16 61 #define addr32 pfa.addr32 62 }; 63 64 #define PFI_AFLAG_NETWORK 0x01 65 #define PFI_AFLAG_BROADCAST 0x02 66 #define PFI_AFLAG_PEER 0x04 67 #define PFI_AFLAG_MODEMASK 0x07 68 #define PFI_AFLAG_NOALIAS 0x08 69 70 struct pf_addr_wrap { 71 union { 72 struct { 73 struct pf_addr addr; 74 struct pf_addr mask; 75 } a; 76 char ifname[IFNAMSIZ]; 77 char tblname[PF_TABLE_NAME_SIZE]; 78 } v; 79 union { 80 struct pfi_dynaddr *dyn; 81 struct pfr_ktable *tbl; 82 int dyncnt; 83 int tblcnt; 84 } p; 85 u_int8_t type; /* PF_ADDR_* */ 86 u_int8_t iflags; /* PFI_AFLAG_* */ 87 }; 88 89 #ifdef _KERNEL 90 91 struct pfi_dynaddr { 92 TAILQ_ENTRY(pfi_dynaddr) entry; 93 struct pf_addr pfid_addr4; 94 struct pf_addr pfid_mask4; 95 struct pf_addr pfid_addr6; 96 struct pf_addr pfid_mask6; 97 struct pfr_ktable *pfid_kt; 98 struct pfi_kif *pfid_kif; 99 int pfid_net; /* mask or 128 */ 100 int pfid_acnt4; /* address count IPv4 */ 101 int pfid_acnt6; /* address count IPv6 */ 102 sa_family_t pfid_af; /* rule af */ 103 u_int8_t pfid_iflags; /* PFI_AFLAG_* */ 104 }; 105 106 /* 107 * Address manipulation macros 108 */ 109 #define HTONL(x) (x) = htonl((__uint32_t)(x)) 110 #define HTONS(x) (x) = htons((__uint16_t)(x)) 111 #define NTOHL(x) (x) = ntohl((__uint32_t)(x)) 112 #define NTOHS(x) (x) = ntohs((__uint16_t)(x)) 113 114 #define PF_NAME "pf" 115 116 #define PF_HASHROW_ASSERT(h) mtx_assert(&(h)->lock, MA_OWNED) 117 #define PF_HASHROW_LOCK(h) mtx_lock(&(h)->lock) 118 #define PF_HASHROW_UNLOCK(h) mtx_unlock(&(h)->lock) 119 120 #define PF_STATE_LOCK(s) \ 121 do { \ 122 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(s)]; \ 123 PF_HASHROW_LOCK(_ih); \ 124 } while (0) 125 126 #define PF_STATE_UNLOCK(s) \ 127 do { \ 128 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH((s))]; \ 129 PF_HASHROW_UNLOCK(_ih); \ 130 } while (0) 131 132 #ifdef INVARIANTS 133 #define PF_STATE_LOCK_ASSERT(s) \ 134 do { \ 135 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(s)]; \ 136 PF_HASHROW_ASSERT(_ih); \ 137 } while (0) 138 #else /* !INVARIANTS */ 139 #define PF_STATE_LOCK_ASSERT(s) do {} while (0) 140 #endif /* INVARIANTS */ 141 142 extern struct mtx pf_unlnkdrules_mtx; 143 #define PF_UNLNKDRULES_LOCK() mtx_lock(&pf_unlnkdrules_mtx) 144 #define PF_UNLNKDRULES_UNLOCK() mtx_unlock(&pf_unlnkdrules_mtx) 145 146 extern struct rwlock pf_rules_lock; 147 #define PF_RULES_RLOCK() rw_rlock(&pf_rules_lock) 148 #define PF_RULES_RUNLOCK() rw_runlock(&pf_rules_lock) 149 #define PF_RULES_WLOCK() rw_wlock(&pf_rules_lock) 150 #define PF_RULES_WUNLOCK() rw_wunlock(&pf_rules_lock) 151 #define PF_RULES_ASSERT() rw_assert(&pf_rules_lock, RA_LOCKED) 152 #define PF_RULES_RASSERT() rw_assert(&pf_rules_lock, RA_RLOCKED) 153 #define PF_RULES_WASSERT() rw_assert(&pf_rules_lock, RA_WLOCKED) 154 155 #define PF_MODVER 1 156 #define PFLOG_MODVER 1 157 #define PFSYNC_MODVER 1 158 159 #define PFLOG_MINVER 1 160 #define PFLOG_PREFVER PFLOG_MODVER 161 #define PFLOG_MAXVER 1 162 #define PFSYNC_MINVER 1 163 #define PFSYNC_PREFVER PFSYNC_MODVER 164 #define PFSYNC_MAXVER 1 165 166 #ifdef INET 167 #ifndef INET6 168 #define PF_INET_ONLY 169 #endif /* ! INET6 */ 170 #endif /* INET */ 171 172 #ifdef INET6 173 #ifndef INET 174 #define PF_INET6_ONLY 175 #endif /* ! INET */ 176 #endif /* INET6 */ 177 178 #ifdef INET 179 #ifdef INET6 180 #define PF_INET_INET6 181 #endif /* INET6 */ 182 #endif /* INET */ 183 184 #else 185 186 #define PF_INET_INET6 187 188 #endif /* _KERNEL */ 189 190 /* Both IPv4 and IPv6 */ 191 #ifdef PF_INET_INET6 192 193 #define PF_AEQ(a, b, c) \ 194 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \ 195 (c == AF_INET6 && (a)->addr32[3] == (b)->addr32[3] && \ 196 (a)->addr32[2] == (b)->addr32[2] && \ 197 (a)->addr32[1] == (b)->addr32[1] && \ 198 (a)->addr32[0] == (b)->addr32[0])) \ 199 200 #define PF_ANEQ(a, b, c) \ 201 ((a)->addr32[0] != (b)->addr32[0] || \ 202 (a)->addr32[1] != (b)->addr32[1] || \ 203 (a)->addr32[2] != (b)->addr32[2] || \ 204 (a)->addr32[3] != (b)->addr32[3]) \ 205 206 #define PF_AZERO(a, c) \ 207 ((c == AF_INET && !(a)->addr32[0]) || \ 208 (c == AF_INET6 && !(a)->addr32[0] && !(a)->addr32[1] && \ 209 !(a)->addr32[2] && !(a)->addr32[3] )) \ 210 211 #define PF_MATCHA(n, a, m, b, f) \ 212 pf_match_addr(n, a, m, b, f) 213 214 #define PF_ACPY(a, b, f) \ 215 pf_addrcpy(a, b, f) 216 217 #define PF_AINC(a, f) \ 218 pf_addr_inc(a, f) 219 220 #define PF_POOLMASK(a, b, c, d, f) \ 221 pf_poolmask(a, b, c, d, f) 222 223 #else 224 225 /* Just IPv6 */ 226 227 #ifdef PF_INET6_ONLY 228 229 #define PF_AEQ(a, b, c) \ 230 ((a)->addr32[3] == (b)->addr32[3] && \ 231 (a)->addr32[2] == (b)->addr32[2] && \ 232 (a)->addr32[1] == (b)->addr32[1] && \ 233 (a)->addr32[0] == (b)->addr32[0]) \ 234 235 #define PF_ANEQ(a, b, c) \ 236 ((a)->addr32[3] != (b)->addr32[3] || \ 237 (a)->addr32[2] != (b)->addr32[2] || \ 238 (a)->addr32[1] != (b)->addr32[1] || \ 239 (a)->addr32[0] != (b)->addr32[0]) \ 240 241 #define PF_AZERO(a, c) \ 242 (!(a)->addr32[0] && \ 243 !(a)->addr32[1] && \ 244 !(a)->addr32[2] && \ 245 !(a)->addr32[3] ) \ 246 247 #define PF_MATCHA(n, a, m, b, f) \ 248 pf_match_addr(n, a, m, b, f) 249 250 #define PF_ACPY(a, b, f) \ 251 pf_addrcpy(a, b, f) 252 253 #define PF_AINC(a, f) \ 254 pf_addr_inc(a, f) 255 256 #define PF_POOLMASK(a, b, c, d, f) \ 257 pf_poolmask(a, b, c, d, f) 258 259 #else 260 261 /* Just IPv4 */ 262 #ifdef PF_INET_ONLY 263 264 #define PF_AEQ(a, b, c) \ 265 ((a)->addr32[0] == (b)->addr32[0]) 266 267 #define PF_ANEQ(a, b, c) \ 268 ((a)->addr32[0] != (b)->addr32[0]) 269 270 #define PF_AZERO(a, c) \ 271 (!(a)->addr32[0]) 272 273 #define PF_MATCHA(n, a, m, b, f) \ 274 pf_match_addr(n, a, m, b, f) 275 276 #define PF_ACPY(a, b, f) \ 277 (a)->v4.s_addr = (b)->v4.s_addr 278 279 #define PF_AINC(a, f) \ 280 do { \ 281 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \ 282 } while (0) 283 284 #define PF_POOLMASK(a, b, c, d, f) \ 285 do { \ 286 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \ 287 (((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \ 288 } while (0) 289 290 #endif /* PF_INET_ONLY */ 291 #endif /* PF_INET6_ONLY */ 292 #endif /* PF_INET_INET6 */ 293 294 /* 295 * XXX callers not FIB-aware in our version of pf yet. 296 * OpenBSD fixed it later it seems, 2010/05/07 13:33:16 claudio. 297 */ 298 #define PF_MISMATCHAW(aw, x, af, neg, ifp, rtid) \ 299 ( \ 300 (((aw)->type == PF_ADDR_NOROUTE && \ 301 pf_routable((x), (af), NULL, (rtid))) || \ 302 (((aw)->type == PF_ADDR_URPFFAILED && (ifp) != NULL && \ 303 pf_routable((x), (af), (ifp), (rtid))) || \ 304 ((aw)->type == PF_ADDR_TABLE && \ 305 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \ 306 ((aw)->type == PF_ADDR_DYNIFTL && \ 307 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \ 308 ((aw)->type == PF_ADDR_RANGE && \ 309 !pf_match_addr_range(&(aw)->v.a.addr, \ 310 &(aw)->v.a.mask, (x), (af))) || \ 311 ((aw)->type == PF_ADDR_ADDRMASK && \ 312 !PF_AZERO(&(aw)->v.a.mask, (af)) && \ 313 !PF_MATCHA(0, &(aw)->v.a.addr, \ 314 &(aw)->v.a.mask, (x), (af))))) != \ 315 (neg) \ 316 ) 317 318 319 struct pf_rule_uid { 320 uid_t uid[2]; 321 u_int8_t op; 322 }; 323 324 struct pf_rule_gid { 325 uid_t gid[2]; 326 u_int8_t op; 327 }; 328 329 struct pf_rule_addr { 330 struct pf_addr_wrap addr; 331 u_int16_t port[2]; 332 u_int8_t neg; 333 u_int8_t port_op; 334 }; 335 336 struct pf_pooladdr { 337 struct pf_addr_wrap addr; 338 TAILQ_ENTRY(pf_pooladdr) entries; 339 char ifname[IFNAMSIZ]; 340 struct pfi_kif *kif; 341 }; 342 343 TAILQ_HEAD(pf_palist, pf_pooladdr); 344 345 struct pf_poolhashkey { 346 union { 347 u_int8_t key8[16]; 348 u_int16_t key16[8]; 349 u_int32_t key32[4]; 350 } pfk; /* 128-bit hash key */ 351 #define key8 pfk.key8 352 #define key16 pfk.key16 353 #define key32 pfk.key32 354 }; 355 356 struct pf_pool { 357 struct pf_palist list; 358 struct pf_pooladdr *cur; 359 struct pf_poolhashkey key; 360 struct pf_addr counter; 361 int tblidx; 362 u_int16_t proxy_port[2]; 363 u_int8_t opts; 364 }; 365 366 367 /* A packed Operating System description for fingerprinting */ 368 typedef u_int32_t pf_osfp_t; 369 #define PF_OSFP_ANY ((pf_osfp_t)0) 370 #define PF_OSFP_UNKNOWN ((pf_osfp_t)-1) 371 #define PF_OSFP_NOMATCH ((pf_osfp_t)-2) 372 373 struct pf_osfp_entry { 374 SLIST_ENTRY(pf_osfp_entry) fp_entry; 375 pf_osfp_t fp_os; 376 int fp_enflags; 377 #define PF_OSFP_EXPANDED 0x001 /* expanded entry */ 378 #define PF_OSFP_GENERIC 0x002 /* generic signature */ 379 #define PF_OSFP_NODETAIL 0x004 /* no p0f details */ 380 #define PF_OSFP_LEN 32 381 char fp_class_nm[PF_OSFP_LEN]; 382 char fp_version_nm[PF_OSFP_LEN]; 383 char fp_subtype_nm[PF_OSFP_LEN]; 384 }; 385 #define PF_OSFP_ENTRY_EQ(a, b) \ 386 ((a)->fp_os == (b)->fp_os && \ 387 memcmp((a)->fp_class_nm, (b)->fp_class_nm, PF_OSFP_LEN) == 0 && \ 388 memcmp((a)->fp_version_nm, (b)->fp_version_nm, PF_OSFP_LEN) == 0 && \ 389 memcmp((a)->fp_subtype_nm, (b)->fp_subtype_nm, PF_OSFP_LEN) == 0) 390 391 /* handle pf_osfp_t packing */ 392 #define _FP_RESERVED_BIT 1 /* For the special negative #defines */ 393 #define _FP_UNUSED_BITS 1 394 #define _FP_CLASS_BITS 10 /* OS Class (Windows, Linux) */ 395 #define _FP_VERSION_BITS 10 /* OS version (95, 98, NT, 2.4.54, 3.2) */ 396 #define _FP_SUBTYPE_BITS 10 /* patch level (NT SP4, SP3, ECN patch) */ 397 #define PF_OSFP_UNPACK(osfp, class, version, subtype) do { \ 398 (class) = ((osfp) >> (_FP_VERSION_BITS+_FP_SUBTYPE_BITS)) & \ 399 ((1 << _FP_CLASS_BITS) - 1); \ 400 (version) = ((osfp) >> _FP_SUBTYPE_BITS) & \ 401 ((1 << _FP_VERSION_BITS) - 1);\ 402 (subtype) = (osfp) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 403 } while(0) 404 #define PF_OSFP_PACK(osfp, class, version, subtype) do { \ 405 (osfp) = ((class) & ((1 << _FP_CLASS_BITS) - 1)) << (_FP_VERSION_BITS \ 406 + _FP_SUBTYPE_BITS); \ 407 (osfp) |= ((version) & ((1 << _FP_VERSION_BITS) - 1)) << \ 408 _FP_SUBTYPE_BITS; \ 409 (osfp) |= (subtype) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 410 } while(0) 411 412 /* the fingerprint of an OSes TCP SYN packet */ 413 typedef u_int64_t pf_tcpopts_t; 414 struct pf_os_fingerprint { 415 SLIST_HEAD(pf_osfp_enlist, pf_osfp_entry) fp_oses; /* list of matches */ 416 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 417 u_int16_t fp_wsize; /* TCP window size */ 418 u_int16_t fp_psize; /* ip->ip_len */ 419 u_int16_t fp_mss; /* TCP MSS */ 420 u_int16_t fp_flags; 421 #define PF_OSFP_WSIZE_MOD 0x0001 /* Window modulus */ 422 #define PF_OSFP_WSIZE_DC 0x0002 /* Window don't care */ 423 #define PF_OSFP_WSIZE_MSS 0x0004 /* Window multiple of MSS */ 424 #define PF_OSFP_WSIZE_MTU 0x0008 /* Window multiple of MTU */ 425 #define PF_OSFP_PSIZE_MOD 0x0010 /* packet size modulus */ 426 #define PF_OSFP_PSIZE_DC 0x0020 /* packet size don't care */ 427 #define PF_OSFP_WSCALE 0x0040 /* TCP window scaling */ 428 #define PF_OSFP_WSCALE_MOD 0x0080 /* TCP window scale modulus */ 429 #define PF_OSFP_WSCALE_DC 0x0100 /* TCP window scale dont-care */ 430 #define PF_OSFP_MSS 0x0200 /* TCP MSS */ 431 #define PF_OSFP_MSS_MOD 0x0400 /* TCP MSS modulus */ 432 #define PF_OSFP_MSS_DC 0x0800 /* TCP MSS dont-care */ 433 #define PF_OSFP_DF 0x1000 /* IPv4 don't fragment bit */ 434 #define PF_OSFP_TS0 0x2000 /* Zero timestamp */ 435 #define PF_OSFP_INET6 0x4000 /* IPv6 */ 436 u_int8_t fp_optcnt; /* TCP option count */ 437 u_int8_t fp_wscale; /* TCP window scaling */ 438 u_int8_t fp_ttl; /* IPv4 TTL */ 439 #define PF_OSFP_MAXTTL_OFFSET 40 440 /* TCP options packing */ 441 #define PF_OSFP_TCPOPT_NOP 0x0 /* TCP NOP option */ 442 #define PF_OSFP_TCPOPT_WSCALE 0x1 /* TCP window scaling option */ 443 #define PF_OSFP_TCPOPT_MSS 0x2 /* TCP max segment size opt */ 444 #define PF_OSFP_TCPOPT_SACK 0x3 /* TCP SACK OK option */ 445 #define PF_OSFP_TCPOPT_TS 0x4 /* TCP timestamp option */ 446 #define PF_OSFP_TCPOPT_BITS 3 /* bits used by each option */ 447 #define PF_OSFP_MAX_OPTS \ 448 (sizeof(((struct pf_os_fingerprint *)0)->fp_tcpopts) * 8) \ 449 / PF_OSFP_TCPOPT_BITS 450 451 SLIST_ENTRY(pf_os_fingerprint) fp_next; 452 }; 453 454 struct pf_osfp_ioctl { 455 struct pf_osfp_entry fp_os; 456 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 457 u_int16_t fp_wsize; /* TCP window size */ 458 u_int16_t fp_psize; /* ip->ip_len */ 459 u_int16_t fp_mss; /* TCP MSS */ 460 u_int16_t fp_flags; 461 u_int8_t fp_optcnt; /* TCP option count */ 462 u_int8_t fp_wscale; /* TCP window scaling */ 463 u_int8_t fp_ttl; /* IPv4 TTL */ 464 465 int fp_getnum; /* DIOCOSFPGET number */ 466 }; 467 468 469 union pf_rule_ptr { 470 struct pf_rule *ptr; 471 u_int32_t nr; 472 }; 473 474 #define PF_ANCHOR_NAME_SIZE 64 475 476 struct pf_rule { 477 struct pf_rule_addr src; 478 struct pf_rule_addr dst; 479 #define PF_SKIP_IFP 0 480 #define PF_SKIP_DIR 1 481 #define PF_SKIP_AF 2 482 #define PF_SKIP_PROTO 3 483 #define PF_SKIP_SRC_ADDR 4 484 #define PF_SKIP_SRC_PORT 5 485 #define PF_SKIP_DST_ADDR 6 486 #define PF_SKIP_DST_PORT 7 487 #define PF_SKIP_COUNT 8 488 union pf_rule_ptr skip[PF_SKIP_COUNT]; 489 #define PF_RULE_LABEL_SIZE 64 490 char label[PF_RULE_LABEL_SIZE]; 491 char ifname[IFNAMSIZ]; 492 char qname[PF_QNAME_SIZE]; 493 char pqname[PF_QNAME_SIZE]; 494 #define PF_TAG_NAME_SIZE 64 495 char tagname[PF_TAG_NAME_SIZE]; 496 char match_tagname[PF_TAG_NAME_SIZE]; 497 498 char overload_tblname[PF_TABLE_NAME_SIZE]; 499 500 TAILQ_ENTRY(pf_rule) entries; 501 struct pf_pool rpool; 502 503 u_int64_t evaluations; 504 u_int64_t packets[2]; 505 u_int64_t bytes[2]; 506 507 struct pfi_kif *kif; 508 struct pf_anchor *anchor; 509 struct pfr_ktable *overload_tbl; 510 511 pf_osfp_t os_fingerprint; 512 513 int rtableid; 514 u_int32_t timeout[PFTM_MAX]; 515 u_int32_t max_states; 516 u_int32_t max_src_nodes; 517 u_int32_t max_src_states; 518 u_int32_t max_src_conn; 519 struct { 520 u_int32_t limit; 521 u_int32_t seconds; 522 } max_src_conn_rate; 523 u_int32_t qid; 524 u_int32_t pqid; 525 u_int32_t rt_listid; 526 u_int32_t nr; 527 u_int32_t prob; 528 uid_t cuid; 529 pid_t cpid; 530 531 counter_u64_t states_cur; 532 counter_u64_t states_tot; 533 counter_u64_t src_nodes; 534 535 u_int16_t return_icmp; 536 u_int16_t return_icmp6; 537 u_int16_t max_mss; 538 u_int16_t tag; 539 u_int16_t match_tag; 540 u_int16_t spare2; /* netgraph */ 541 542 struct pf_rule_uid uid; 543 struct pf_rule_gid gid; 544 545 u_int32_t rule_flag; 546 u_int8_t action; 547 u_int8_t direction; 548 u_int8_t log; 549 u_int8_t logif; 550 u_int8_t quick; 551 u_int8_t ifnot; 552 u_int8_t match_tag_not; 553 u_int8_t natpass; 554 555 #define PF_STATE_NORMAL 0x1 556 #define PF_STATE_MODULATE 0x2 557 #define PF_STATE_SYNPROXY 0x3 558 u_int8_t keep_state; 559 sa_family_t af; 560 u_int8_t proto; 561 u_int8_t type; 562 u_int8_t code; 563 u_int8_t flags; 564 u_int8_t flagset; 565 u_int8_t min_ttl; 566 u_int8_t allow_opts; 567 u_int8_t rt; 568 u_int8_t return_ttl; 569 u_int8_t tos; 570 u_int8_t set_tos; 571 u_int8_t anchor_relative; 572 u_int8_t anchor_wildcard; 573 574 #define PF_FLUSH 0x01 575 #define PF_FLUSH_GLOBAL 0x02 576 u_int8_t flush; 577 578 struct { 579 struct pf_addr addr; 580 u_int16_t port; 581 } divert; 582 583 uint64_t u_states_cur; 584 uint64_t u_states_tot; 585 uint64_t u_src_nodes; 586 }; 587 588 /* rule flags */ 589 #define PFRULE_DROP 0x0000 590 #define PFRULE_RETURNRST 0x0001 591 #define PFRULE_FRAGMENT 0x0002 592 #define PFRULE_RETURNICMP 0x0004 593 #define PFRULE_RETURN 0x0008 594 #define PFRULE_NOSYNC 0x0010 595 #define PFRULE_SRCTRACK 0x0020 /* track source states */ 596 #define PFRULE_RULESRCTRACK 0x0040 /* per rule */ 597 #define PFRULE_REFS 0x0080 /* rule has references */ 598 599 /* scrub flags */ 600 #define PFRULE_NODF 0x0100 601 #define PFRULE_FRAGCROP 0x0200 /* non-buffering frag cache */ 602 #define PFRULE_FRAGDROP 0x0400 /* drop funny fragments */ 603 #define PFRULE_RANDOMID 0x0800 604 #define PFRULE_REASSEMBLE_TCP 0x1000 605 #define PFRULE_SET_TOS 0x2000 606 607 /* rule flags again */ 608 #define PFRULE_IFBOUND 0x00010000 /* if-bound */ 609 #define PFRULE_STATESLOPPY 0x00020000 /* sloppy state tracking */ 610 611 #define PFSTATE_HIWAT 10000 /* default state table size */ 612 #define PFSTATE_ADAPT_START 6000 /* default adaptive timeout start */ 613 #define PFSTATE_ADAPT_END 12000 /* default adaptive timeout end */ 614 615 616 struct pf_threshold { 617 u_int32_t limit; 618 #define PF_THRESHOLD_MULT 1000 619 #define PF_THRESHOLD_MAX 0xffffffff / PF_THRESHOLD_MULT 620 u_int32_t seconds; 621 u_int32_t count; 622 u_int32_t last; 623 }; 624 625 struct pf_src_node { 626 LIST_ENTRY(pf_src_node) entry; 627 struct pf_addr addr; 628 struct pf_addr raddr; 629 union pf_rule_ptr rule; 630 struct pfi_kif *kif; 631 u_int64_t bytes[2]; 632 u_int64_t packets[2]; 633 u_int32_t states; 634 u_int32_t conn; 635 struct pf_threshold conn_rate; 636 u_int32_t creation; 637 u_int32_t expire; 638 sa_family_t af; 639 u_int8_t ruletype; 640 }; 641 642 #define PFSNODE_HIWAT 10000 /* default source node table size */ 643 644 struct pf_state_scrub { 645 struct timeval pfss_last; /* time received last packet */ 646 u_int32_t pfss_tsecr; /* last echoed timestamp */ 647 u_int32_t pfss_tsval; /* largest timestamp */ 648 u_int32_t pfss_tsval0; /* original timestamp */ 649 u_int16_t pfss_flags; 650 #define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */ 651 #define PFSS_PAWS 0x0010 /* stricter PAWS checks */ 652 #define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */ 653 #define PFSS_DATA_TS 0x0040 /* timestamp on data packets */ 654 #define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */ 655 u_int8_t pfss_ttl; /* stashed TTL */ 656 u_int8_t pad; 657 u_int32_t pfss_ts_mod; /* timestamp modulation */ 658 }; 659 660 struct pf_state_host { 661 struct pf_addr addr; 662 u_int16_t port; 663 u_int16_t pad; 664 }; 665 666 struct pf_state_peer { 667 struct pf_state_scrub *scrub; /* state is scrubbed */ 668 u_int32_t seqlo; /* Max sequence number sent */ 669 u_int32_t seqhi; /* Max the other end ACKd + win */ 670 u_int32_t seqdiff; /* Sequence number modulator */ 671 u_int16_t max_win; /* largest window (pre scaling) */ 672 u_int16_t mss; /* Maximum segment size option */ 673 u_int8_t state; /* active state level */ 674 u_int8_t wscale; /* window scaling factor */ 675 u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */ 676 u_int8_t pad[1]; 677 }; 678 679 /* Keep synced with struct pf_state_key. */ 680 struct pf_state_key_cmp { 681 struct pf_addr addr[2]; 682 u_int16_t port[2]; 683 sa_family_t af; 684 u_int8_t proto; 685 u_int8_t pad[2]; 686 }; 687 688 struct pf_state_key { 689 struct pf_addr addr[2]; 690 u_int16_t port[2]; 691 sa_family_t af; 692 u_int8_t proto; 693 u_int8_t pad[2]; 694 695 LIST_ENTRY(pf_state_key) entry; 696 TAILQ_HEAD(, pf_state) states[2]; 697 }; 698 699 /* Keep synced with struct pf_state. */ 700 struct pf_state_cmp { 701 u_int64_t id; 702 u_int32_t creatorid; 703 u_int8_t direction; 704 u_int8_t pad[3]; 705 }; 706 707 struct pf_state { 708 u_int64_t id; 709 u_int32_t creatorid; 710 u_int8_t direction; 711 u_int8_t pad[3]; 712 713 u_int refs; 714 TAILQ_ENTRY(pf_state) sync_list; 715 TAILQ_ENTRY(pf_state) key_list[2]; 716 LIST_ENTRY(pf_state) entry; 717 struct pf_state_peer src; 718 struct pf_state_peer dst; 719 union pf_rule_ptr rule; 720 union pf_rule_ptr anchor; 721 union pf_rule_ptr nat_rule; 722 struct pf_addr rt_addr; 723 struct pf_state_key *key[2]; /* addresses stack and wire */ 724 struct pfi_kif *kif; 725 struct pfi_kif *rt_kif; 726 struct pf_src_node *src_node; 727 struct pf_src_node *nat_src_node; 728 u_int64_t packets[2]; 729 u_int64_t bytes[2]; 730 u_int32_t creation; 731 u_int32_t expire; 732 u_int32_t pfsync_time; 733 u_int16_t tag; 734 u_int8_t log; 735 u_int8_t state_flags; 736 #define PFSTATE_ALLOWOPTS 0x01 737 #define PFSTATE_SLOPPY 0x02 738 /* was PFSTATE_PFLOW 0x04 */ 739 #define PFSTATE_NOSYNC 0x08 740 #define PFSTATE_ACK 0x10 741 u_int8_t timeout; 742 u_int8_t sync_state; /* PFSYNC_S_x */ 743 744 /* XXX */ 745 u_int8_t sync_updates; 746 u_int8_t _tail[3]; 747 }; 748 749 /* 750 * Unified state structures for pulling states out of the kernel 751 * used by pfsync(4) and the pf(4) ioctl. 752 */ 753 struct pfsync_state_scrub { 754 u_int16_t pfss_flags; 755 u_int8_t pfss_ttl; /* stashed TTL */ 756 #define PFSYNC_SCRUB_FLAG_VALID 0x01 757 u_int8_t scrub_flag; 758 u_int32_t pfss_ts_mod; /* timestamp modulation */ 759 } __packed; 760 761 struct pfsync_state_peer { 762 struct pfsync_state_scrub scrub; /* state is scrubbed */ 763 u_int32_t seqlo; /* Max sequence number sent */ 764 u_int32_t seqhi; /* Max the other end ACKd + win */ 765 u_int32_t seqdiff; /* Sequence number modulator */ 766 u_int16_t max_win; /* largest window (pre scaling) */ 767 u_int16_t mss; /* Maximum segment size option */ 768 u_int8_t state; /* active state level */ 769 u_int8_t wscale; /* window scaling factor */ 770 u_int8_t pad[6]; 771 } __packed; 772 773 struct pfsync_state_key { 774 struct pf_addr addr[2]; 775 u_int16_t port[2]; 776 }; 777 778 struct pfsync_state { 779 u_int64_t id; 780 char ifname[IFNAMSIZ]; 781 struct pfsync_state_key key[2]; 782 struct pfsync_state_peer src; 783 struct pfsync_state_peer dst; 784 struct pf_addr rt_addr; 785 u_int32_t rule; 786 u_int32_t anchor; 787 u_int32_t nat_rule; 788 u_int32_t creation; 789 u_int32_t expire; 790 u_int32_t packets[2][2]; 791 u_int32_t bytes[2][2]; 792 u_int32_t creatorid; 793 sa_family_t af; 794 u_int8_t proto; 795 u_int8_t direction; 796 u_int8_t __spare[2]; 797 u_int8_t log; 798 u_int8_t state_flags; 799 u_int8_t timeout; 800 u_int8_t sync_flags; 801 u_int8_t updates; 802 } __packed; 803 804 #ifdef _KERNEL 805 /* pfsync */ 806 typedef int pfsync_state_import_t(struct pfsync_state *, u_int8_t); 807 typedef void pfsync_insert_state_t(struct pf_state *); 808 typedef void pfsync_update_state_t(struct pf_state *); 809 typedef void pfsync_delete_state_t(struct pf_state *); 810 typedef void pfsync_clear_states_t(u_int32_t, const char *); 811 typedef int pfsync_defer_t(struct pf_state *, struct mbuf *); 812 813 extern pfsync_state_import_t *pfsync_state_import_ptr; 814 extern pfsync_insert_state_t *pfsync_insert_state_ptr; 815 extern pfsync_update_state_t *pfsync_update_state_ptr; 816 extern pfsync_delete_state_t *pfsync_delete_state_ptr; 817 extern pfsync_clear_states_t *pfsync_clear_states_ptr; 818 extern pfsync_defer_t *pfsync_defer_ptr; 819 820 void pfsync_state_export(struct pfsync_state *, 821 struct pf_state *); 822 823 /* pflog */ 824 struct pf_ruleset; 825 struct pf_pdesc; 826 typedef int pflog_packet_t(struct pfi_kif *, struct mbuf *, sa_family_t, 827 u_int8_t, u_int8_t, struct pf_rule *, struct pf_rule *, 828 struct pf_ruleset *, struct pf_pdesc *, int); 829 extern pflog_packet_t *pflog_packet_ptr; 830 831 #define V_pf_end_threads VNET(pf_end_threads) 832 #endif /* _KERNEL */ 833 834 #define PFSYNC_FLAG_SRCNODE 0x04 835 #define PFSYNC_FLAG_NATSRCNODE 0x08 836 837 /* for copies to/from network byte order */ 838 /* ioctl interface also uses network byte order */ 839 #define pf_state_peer_hton(s,d) do { \ 840 (d)->seqlo = htonl((s)->seqlo); \ 841 (d)->seqhi = htonl((s)->seqhi); \ 842 (d)->seqdiff = htonl((s)->seqdiff); \ 843 (d)->max_win = htons((s)->max_win); \ 844 (d)->mss = htons((s)->mss); \ 845 (d)->state = (s)->state; \ 846 (d)->wscale = (s)->wscale; \ 847 if ((s)->scrub) { \ 848 (d)->scrub.pfss_flags = \ 849 htons((s)->scrub->pfss_flags & PFSS_TIMESTAMP); \ 850 (d)->scrub.pfss_ttl = (s)->scrub->pfss_ttl; \ 851 (d)->scrub.pfss_ts_mod = htonl((s)->scrub->pfss_ts_mod);\ 852 (d)->scrub.scrub_flag = PFSYNC_SCRUB_FLAG_VALID; \ 853 } \ 854 } while (0) 855 856 #define pf_state_peer_ntoh(s,d) do { \ 857 (d)->seqlo = ntohl((s)->seqlo); \ 858 (d)->seqhi = ntohl((s)->seqhi); \ 859 (d)->seqdiff = ntohl((s)->seqdiff); \ 860 (d)->max_win = ntohs((s)->max_win); \ 861 (d)->mss = ntohs((s)->mss); \ 862 (d)->state = (s)->state; \ 863 (d)->wscale = (s)->wscale; \ 864 if ((s)->scrub.scrub_flag == PFSYNC_SCRUB_FLAG_VALID && \ 865 (d)->scrub != NULL) { \ 866 (d)->scrub->pfss_flags = \ 867 ntohs((s)->scrub.pfss_flags) & PFSS_TIMESTAMP; \ 868 (d)->scrub->pfss_ttl = (s)->scrub.pfss_ttl; \ 869 (d)->scrub->pfss_ts_mod = ntohl((s)->scrub.pfss_ts_mod);\ 870 } \ 871 } while (0) 872 873 #define pf_state_counter_hton(s,d) do { \ 874 d[0] = htonl((s>>32)&0xffffffff); \ 875 d[1] = htonl(s&0xffffffff); \ 876 } while (0) 877 878 #define pf_state_counter_from_pfsync(s) \ 879 (((u_int64_t)(s[0])<<32) | (u_int64_t)(s[1])) 880 881 #define pf_state_counter_ntoh(s,d) do { \ 882 d = ntohl(s[0]); \ 883 d = d<<32; \ 884 d += ntohl(s[1]); \ 885 } while (0) 886 887 TAILQ_HEAD(pf_rulequeue, pf_rule); 888 889 struct pf_anchor; 890 891 struct pf_ruleset { 892 struct { 893 struct pf_rulequeue queues[2]; 894 struct { 895 struct pf_rulequeue *ptr; 896 struct pf_rule **ptr_array; 897 u_int32_t rcount; 898 u_int32_t ticket; 899 int open; 900 } active, inactive; 901 } rules[PF_RULESET_MAX]; 902 struct pf_anchor *anchor; 903 u_int32_t tticket; 904 int tables; 905 int topen; 906 }; 907 908 RB_HEAD(pf_anchor_global, pf_anchor); 909 RB_HEAD(pf_anchor_node, pf_anchor); 910 struct pf_anchor { 911 RB_ENTRY(pf_anchor) entry_global; 912 RB_ENTRY(pf_anchor) entry_node; 913 struct pf_anchor *parent; 914 struct pf_anchor_node children; 915 char name[PF_ANCHOR_NAME_SIZE]; 916 char path[MAXPATHLEN]; 917 struct pf_ruleset ruleset; 918 int refcnt; /* anchor rules */ 919 int match; /* XXX: used for pfctl black magic */ 920 }; 921 RB_PROTOTYPE(pf_anchor_global, pf_anchor, entry_global, pf_anchor_compare); 922 RB_PROTOTYPE(pf_anchor_node, pf_anchor, entry_node, pf_anchor_compare); 923 924 #define PF_RESERVED_ANCHOR "_pf" 925 926 #define PFR_TFLAG_PERSIST 0x00000001 927 #define PFR_TFLAG_CONST 0x00000002 928 #define PFR_TFLAG_ACTIVE 0x00000004 929 #define PFR_TFLAG_INACTIVE 0x00000008 930 #define PFR_TFLAG_REFERENCED 0x00000010 931 #define PFR_TFLAG_REFDANCHOR 0x00000020 932 #define PFR_TFLAG_COUNTERS 0x00000040 933 /* Adjust masks below when adding flags. */ 934 #define PFR_TFLAG_USRMASK (PFR_TFLAG_PERSIST | \ 935 PFR_TFLAG_CONST | \ 936 PFR_TFLAG_COUNTERS) 937 #define PFR_TFLAG_SETMASK (PFR_TFLAG_ACTIVE | \ 938 PFR_TFLAG_INACTIVE | \ 939 PFR_TFLAG_REFERENCED | \ 940 PFR_TFLAG_REFDANCHOR) 941 #define PFR_TFLAG_ALLMASK (PFR_TFLAG_PERSIST | \ 942 PFR_TFLAG_CONST | \ 943 PFR_TFLAG_ACTIVE | \ 944 PFR_TFLAG_INACTIVE | \ 945 PFR_TFLAG_REFERENCED | \ 946 PFR_TFLAG_REFDANCHOR | \ 947 PFR_TFLAG_COUNTERS) 948 949 struct pf_anchor_stackframe; 950 951 struct pfr_table { 952 char pfrt_anchor[MAXPATHLEN]; 953 char pfrt_name[PF_TABLE_NAME_SIZE]; 954 u_int32_t pfrt_flags; 955 u_int8_t pfrt_fback; 956 }; 957 958 enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED, 959 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE, 960 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_NOCOUNT, PFR_FB_MAX }; 961 962 struct pfr_addr { 963 union { 964 struct in_addr _pfra_ip4addr; 965 struct in6_addr _pfra_ip6addr; 966 } pfra_u; 967 u_int8_t pfra_af; 968 u_int8_t pfra_net; 969 u_int8_t pfra_not; 970 u_int8_t pfra_fback; 971 }; 972 #define pfra_ip4addr pfra_u._pfra_ip4addr 973 #define pfra_ip6addr pfra_u._pfra_ip6addr 974 975 enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX }; 976 enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX }; 977 #define PFR_OP_XPASS PFR_OP_ADDR_MAX 978 979 struct pfr_astats { 980 struct pfr_addr pfras_a; 981 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 982 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 983 long pfras_tzero; 984 }; 985 986 enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX }; 987 988 struct pfr_tstats { 989 struct pfr_table pfrts_t; 990 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 991 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 992 u_int64_t pfrts_match; 993 u_int64_t pfrts_nomatch; 994 long pfrts_tzero; 995 int pfrts_cnt; 996 int pfrts_refcnt[PFR_REFCNT_MAX]; 997 }; 998 #define pfrts_name pfrts_t.pfrt_name 999 #define pfrts_flags pfrts_t.pfrt_flags 1000 1001 #ifndef _SOCKADDR_UNION_DEFINED 1002 #define _SOCKADDR_UNION_DEFINED 1003 union sockaddr_union { 1004 struct sockaddr sa; 1005 struct sockaddr_in sin; 1006 struct sockaddr_in6 sin6; 1007 }; 1008 #endif /* _SOCKADDR_UNION_DEFINED */ 1009 1010 struct pfr_kcounters { 1011 u_int64_t pfrkc_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1012 u_int64_t pfrkc_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1013 }; 1014 1015 SLIST_HEAD(pfr_kentryworkq, pfr_kentry); 1016 struct pfr_kentry { 1017 struct radix_node pfrke_node[2]; 1018 union sockaddr_union pfrke_sa; 1019 SLIST_ENTRY(pfr_kentry) pfrke_workq; 1020 struct pfr_kcounters *pfrke_counters; 1021 long pfrke_tzero; 1022 u_int8_t pfrke_af; 1023 u_int8_t pfrke_net; 1024 u_int8_t pfrke_not; 1025 u_int8_t pfrke_mark; 1026 }; 1027 1028 SLIST_HEAD(pfr_ktableworkq, pfr_ktable); 1029 RB_HEAD(pfr_ktablehead, pfr_ktable); 1030 struct pfr_ktable { 1031 struct pfr_tstats pfrkt_ts; 1032 RB_ENTRY(pfr_ktable) pfrkt_tree; 1033 SLIST_ENTRY(pfr_ktable) pfrkt_workq; 1034 struct radix_node_head *pfrkt_ip4; 1035 struct radix_node_head *pfrkt_ip6; 1036 struct pfr_ktable *pfrkt_shadow; 1037 struct pfr_ktable *pfrkt_root; 1038 struct pf_ruleset *pfrkt_rs; 1039 long pfrkt_larg; 1040 int pfrkt_nflags; 1041 }; 1042 #define pfrkt_t pfrkt_ts.pfrts_t 1043 #define pfrkt_name pfrkt_t.pfrt_name 1044 #define pfrkt_anchor pfrkt_t.pfrt_anchor 1045 #define pfrkt_ruleset pfrkt_t.pfrt_ruleset 1046 #define pfrkt_flags pfrkt_t.pfrt_flags 1047 #define pfrkt_cnt pfrkt_ts.pfrts_cnt 1048 #define pfrkt_refcnt pfrkt_ts.pfrts_refcnt 1049 #define pfrkt_packets pfrkt_ts.pfrts_packets 1050 #define pfrkt_bytes pfrkt_ts.pfrts_bytes 1051 #define pfrkt_match pfrkt_ts.pfrts_match 1052 #define pfrkt_nomatch pfrkt_ts.pfrts_nomatch 1053 #define pfrkt_tzero pfrkt_ts.pfrts_tzero 1054 1055 /* keep synced with pfi_kif, used in RB_FIND */ 1056 struct pfi_kif_cmp { 1057 char pfik_name[IFNAMSIZ]; 1058 }; 1059 1060 struct pfi_kif { 1061 char pfik_name[IFNAMSIZ]; 1062 union { 1063 RB_ENTRY(pfi_kif) _pfik_tree; 1064 LIST_ENTRY(pfi_kif) _pfik_list; 1065 } _pfik_glue; 1066 #define pfik_tree _pfik_glue._pfik_tree 1067 #define pfik_list _pfik_glue._pfik_list 1068 u_int64_t pfik_packets[2][2][2]; 1069 u_int64_t pfik_bytes[2][2][2]; 1070 u_int32_t pfik_tzero; 1071 u_int pfik_flags; 1072 struct ifnet *pfik_ifp; 1073 struct ifg_group *pfik_group; 1074 u_int pfik_rulerefs; 1075 TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs; 1076 }; 1077 1078 #define PFI_IFLAG_REFS 0x0001 /* has state references */ 1079 #define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */ 1080 1081 struct pf_pdesc { 1082 struct { 1083 int done; 1084 uid_t uid; 1085 gid_t gid; 1086 } lookup; 1087 u_int64_t tot_len; /* Make Mickey money */ 1088 union { 1089 struct tcphdr *tcp; 1090 struct udphdr *udp; 1091 struct icmp *icmp; 1092 #ifdef INET6 1093 struct icmp6_hdr *icmp6; 1094 #endif /* INET6 */ 1095 void *any; 1096 } hdr; 1097 1098 struct pf_rule *nat_rule; /* nat/rdr rule applied to packet */ 1099 struct pf_addr *src; /* src address */ 1100 struct pf_addr *dst; /* dst address */ 1101 u_int16_t *sport; 1102 u_int16_t *dport; 1103 struct pf_mtag *pf_mtag; 1104 1105 u_int32_t p_len; /* total length of payload */ 1106 1107 u_int16_t *ip_sum; 1108 u_int16_t *proto_sum; 1109 u_int16_t flags; /* Let SCRUB trigger behavior in 1110 * state code. Easier than tags */ 1111 #define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */ 1112 #define PFDESC_IP_REAS 0x0002 /* IP frags would've been reassembled */ 1113 sa_family_t af; 1114 u_int8_t proto; 1115 u_int8_t tos; 1116 u_int8_t dir; /* direction */ 1117 u_int8_t sidx; /* key index for source */ 1118 u_int8_t didx; /* key index for destination */ 1119 }; 1120 1121 /* flags for RDR options */ 1122 #define PF_DPORT_RANGE 0x01 /* Dest port uses range */ 1123 #define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */ 1124 1125 /* UDP state enumeration */ 1126 #define PFUDPS_NO_TRAFFIC 0 1127 #define PFUDPS_SINGLE 1 1128 #define PFUDPS_MULTIPLE 2 1129 1130 #define PFUDPS_NSTATES 3 /* number of state levels */ 1131 1132 #define PFUDPS_NAMES { \ 1133 "NO_TRAFFIC", \ 1134 "SINGLE", \ 1135 "MULTIPLE", \ 1136 NULL \ 1137 } 1138 1139 /* Other protocol state enumeration */ 1140 #define PFOTHERS_NO_TRAFFIC 0 1141 #define PFOTHERS_SINGLE 1 1142 #define PFOTHERS_MULTIPLE 2 1143 1144 #define PFOTHERS_NSTATES 3 /* number of state levels */ 1145 1146 #define PFOTHERS_NAMES { \ 1147 "NO_TRAFFIC", \ 1148 "SINGLE", \ 1149 "MULTIPLE", \ 1150 NULL \ 1151 } 1152 1153 #define ACTION_SET(a, x) \ 1154 do { \ 1155 if ((a) != NULL) \ 1156 *(a) = (x); \ 1157 } while (0) 1158 1159 #define REASON_SET(a, x) \ 1160 do { \ 1161 if ((a) != NULL) \ 1162 *(a) = (x); \ 1163 if (x < PFRES_MAX) \ 1164 counter_u64_add(V_pf_status.counters[x], 1); \ 1165 } while (0) 1166 1167 struct pf_kstatus { 1168 counter_u64_t counters[PFRES_MAX]; /* reason for passing/dropping */ 1169 counter_u64_t lcounters[LCNT_MAX]; /* limit counters */ 1170 counter_u64_t fcounters[FCNT_MAX]; /* state operation counters */ 1171 counter_u64_t scounters[SCNT_MAX]; /* src_node operation counters */ 1172 uint32_t states; 1173 uint32_t src_nodes; 1174 uint32_t running; 1175 uint32_t since; 1176 uint32_t debug; 1177 uint32_t hostid; 1178 char ifname[IFNAMSIZ]; 1179 uint8_t pf_chksum[PF_MD5_DIGEST_LENGTH]; 1180 }; 1181 1182 struct pf_divert { 1183 union { 1184 struct in_addr ipv4; 1185 struct in6_addr ipv6; 1186 } addr; 1187 u_int16_t port; 1188 }; 1189 1190 #define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */ 1191 #define PFR_KENTRY_HIWAT 200000 /* Number of table entries */ 1192 1193 /* 1194 * ioctl parameter structures 1195 */ 1196 1197 struct pfioc_pooladdr { 1198 u_int32_t action; 1199 u_int32_t ticket; 1200 u_int32_t nr; 1201 u_int32_t r_num; 1202 u_int8_t r_action; 1203 u_int8_t r_last; 1204 u_int8_t af; 1205 char anchor[MAXPATHLEN]; 1206 struct pf_pooladdr addr; 1207 }; 1208 1209 struct pfioc_rule { 1210 u_int32_t action; 1211 u_int32_t ticket; 1212 u_int32_t pool_ticket; 1213 u_int32_t nr; 1214 char anchor[MAXPATHLEN]; 1215 char anchor_call[MAXPATHLEN]; 1216 struct pf_rule rule; 1217 }; 1218 1219 struct pfioc_natlook { 1220 struct pf_addr saddr; 1221 struct pf_addr daddr; 1222 struct pf_addr rsaddr; 1223 struct pf_addr rdaddr; 1224 u_int16_t sport; 1225 u_int16_t dport; 1226 u_int16_t rsport; 1227 u_int16_t rdport; 1228 sa_family_t af; 1229 u_int8_t proto; 1230 u_int8_t direction; 1231 }; 1232 1233 struct pfioc_state { 1234 struct pfsync_state state; 1235 }; 1236 1237 struct pfioc_src_node_kill { 1238 sa_family_t psnk_af; 1239 struct pf_rule_addr psnk_src; 1240 struct pf_rule_addr psnk_dst; 1241 u_int psnk_killed; 1242 }; 1243 1244 struct pfioc_state_kill { 1245 struct pf_state_cmp psk_pfcmp; 1246 sa_family_t psk_af; 1247 int psk_proto; 1248 struct pf_rule_addr psk_src; 1249 struct pf_rule_addr psk_dst; 1250 char psk_ifname[IFNAMSIZ]; 1251 char psk_label[PF_RULE_LABEL_SIZE]; 1252 u_int psk_killed; 1253 }; 1254 1255 struct pfioc_states { 1256 int ps_len; 1257 union { 1258 caddr_t psu_buf; 1259 struct pfsync_state *psu_states; 1260 } ps_u; 1261 #define ps_buf ps_u.psu_buf 1262 #define ps_states ps_u.psu_states 1263 }; 1264 1265 struct pfioc_src_nodes { 1266 int psn_len; 1267 union { 1268 caddr_t psu_buf; 1269 struct pf_src_node *psu_src_nodes; 1270 } psn_u; 1271 #define psn_buf psn_u.psu_buf 1272 #define psn_src_nodes psn_u.psu_src_nodes 1273 }; 1274 1275 struct pfioc_if { 1276 char ifname[IFNAMSIZ]; 1277 }; 1278 1279 struct pfioc_tm { 1280 int timeout; 1281 int seconds; 1282 }; 1283 1284 struct pfioc_limit { 1285 int index; 1286 unsigned limit; 1287 }; 1288 1289 struct pfioc_altq { 1290 u_int32_t action; 1291 u_int32_t ticket; 1292 u_int32_t nr; 1293 struct pf_altq altq; 1294 }; 1295 1296 struct pfioc_qstats { 1297 u_int32_t ticket; 1298 u_int32_t nr; 1299 void *buf; 1300 int nbytes; 1301 u_int8_t scheduler; 1302 }; 1303 1304 struct pfioc_ruleset { 1305 u_int32_t nr; 1306 char path[MAXPATHLEN]; 1307 char name[PF_ANCHOR_NAME_SIZE]; 1308 }; 1309 1310 #define PF_RULESET_ALTQ (PF_RULESET_MAX) 1311 #define PF_RULESET_TABLE (PF_RULESET_MAX+1) 1312 struct pfioc_trans { 1313 int size; /* number of elements */ 1314 int esize; /* size of each element in bytes */ 1315 struct pfioc_trans_e { 1316 int rs_num; 1317 char anchor[MAXPATHLEN]; 1318 u_int32_t ticket; 1319 } *array; 1320 }; 1321 1322 #define PFR_FLAG_ATOMIC 0x00000001 /* unused */ 1323 #define PFR_FLAG_DUMMY 0x00000002 1324 #define PFR_FLAG_FEEDBACK 0x00000004 1325 #define PFR_FLAG_CLSTATS 0x00000008 1326 #define PFR_FLAG_ADDRSTOO 0x00000010 1327 #define PFR_FLAG_REPLACE 0x00000020 1328 #define PFR_FLAG_ALLRSETS 0x00000040 1329 #define PFR_FLAG_ALLMASK 0x0000007F 1330 #ifdef _KERNEL 1331 #define PFR_FLAG_USERIOCTL 0x10000000 1332 #endif 1333 1334 struct pfioc_table { 1335 struct pfr_table pfrio_table; 1336 void *pfrio_buffer; 1337 int pfrio_esize; 1338 int pfrio_size; 1339 int pfrio_size2; 1340 int pfrio_nadd; 1341 int pfrio_ndel; 1342 int pfrio_nchange; 1343 int pfrio_flags; 1344 u_int32_t pfrio_ticket; 1345 }; 1346 #define pfrio_exists pfrio_nadd 1347 #define pfrio_nzero pfrio_nadd 1348 #define pfrio_nmatch pfrio_nadd 1349 #define pfrio_naddr pfrio_size2 1350 #define pfrio_setflag pfrio_size2 1351 #define pfrio_clrflag pfrio_nadd 1352 1353 struct pfioc_iface { 1354 char pfiio_name[IFNAMSIZ]; 1355 void *pfiio_buffer; 1356 int pfiio_esize; 1357 int pfiio_size; 1358 int pfiio_nzero; 1359 int pfiio_flags; 1360 }; 1361 1362 1363 /* 1364 * ioctl operations 1365 */ 1366 1367 #define DIOCSTART _IO ('D', 1) 1368 #define DIOCSTOP _IO ('D', 2) 1369 #define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule) 1370 #define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule) 1371 #define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule) 1372 /* XXX cut 8 - 17 */ 1373 #define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill) 1374 #define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state) 1375 #define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if) 1376 #define DIOCGETSTATUS _IOWR('D', 21, struct pf_status) 1377 #define DIOCCLRSTATUS _IO ('D', 22) 1378 #define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook) 1379 #define DIOCSETDEBUG _IOWR('D', 24, u_int32_t) 1380 #define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states) 1381 #define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule) 1382 /* XXX cut 26 - 28 */ 1383 #define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm) 1384 #define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm) 1385 #define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state) 1386 #define DIOCCLRRULECTRS _IO ('D', 38) 1387 #define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit) 1388 #define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit) 1389 #define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill) 1390 #define DIOCSTARTALTQ _IO ('D', 42) 1391 #define DIOCSTOPALTQ _IO ('D', 43) 1392 #define DIOCADDALTQ _IOWR('D', 45, struct pfioc_altq) 1393 #define DIOCGETALTQS _IOWR('D', 47, struct pfioc_altq) 1394 #define DIOCGETALTQ _IOWR('D', 48, struct pfioc_altq) 1395 #define DIOCCHANGEALTQ _IOWR('D', 49, struct pfioc_altq) 1396 #define DIOCGETQSTATS _IOWR('D', 50, struct pfioc_qstats) 1397 #define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr) 1398 #define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr) 1399 #define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr) 1400 #define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr) 1401 #define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr) 1402 /* XXX cut 55 - 57 */ 1403 #define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset) 1404 #define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset) 1405 #define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table) 1406 #define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table) 1407 #define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table) 1408 #define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table) 1409 #define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table) 1410 #define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table) 1411 #define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table) 1412 #define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table) 1413 #define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table) 1414 #define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table) 1415 #define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table) 1416 #define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table) 1417 #define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table) 1418 #define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table) 1419 #define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table) 1420 #define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table) 1421 #define DIOCOSFPFLUSH _IO('D', 78) 1422 #define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl) 1423 #define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl) 1424 #define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans) 1425 #define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans) 1426 #define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans) 1427 #define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes) 1428 #define DIOCCLRSRCNODES _IO('D', 85) 1429 #define DIOCSETHOSTID _IOWR('D', 86, u_int32_t) 1430 #define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface) 1431 #define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface) 1432 #define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface) 1433 #define DIOCKILLSRCNODES _IOWR('D', 91, struct pfioc_src_node_kill) 1434 struct pf_ifspeed { 1435 char ifname[IFNAMSIZ]; 1436 u_int32_t baudrate; 1437 }; 1438 #define DIOCGIFSPEED _IOWR('D', 92, struct pf_ifspeed) 1439 1440 #ifdef _KERNEL 1441 LIST_HEAD(pf_src_node_list, pf_src_node); 1442 struct pf_srchash { 1443 struct pf_src_node_list nodes; 1444 struct mtx lock; 1445 }; 1446 1447 struct pf_keyhash { 1448 LIST_HEAD(, pf_state_key) keys; 1449 struct mtx lock; 1450 }; 1451 1452 struct pf_idhash { 1453 LIST_HEAD(, pf_state) states; 1454 struct mtx lock; 1455 }; 1456 1457 extern u_long pf_hashmask; 1458 extern u_long pf_srchashmask; 1459 #define PF_HASHSIZ (32768) 1460 VNET_DECLARE(struct pf_keyhash *, pf_keyhash); 1461 VNET_DECLARE(struct pf_idhash *, pf_idhash); 1462 #define V_pf_keyhash VNET(pf_keyhash) 1463 #define V_pf_idhash VNET(pf_idhash) 1464 VNET_DECLARE(struct pf_srchash *, pf_srchash); 1465 #define V_pf_srchash VNET(pf_srchash) 1466 1467 #define PF_IDHASH(s) (be64toh((s)->id) % (pf_hashmask + 1)) 1468 1469 VNET_DECLARE(void *, pf_swi_cookie); 1470 #define V_pf_swi_cookie VNET(pf_swi_cookie) 1471 1472 VNET_DECLARE(uint64_t, pf_stateid[MAXCPU]); 1473 #define V_pf_stateid VNET(pf_stateid) 1474 1475 TAILQ_HEAD(pf_altqqueue, pf_altq); 1476 VNET_DECLARE(struct pf_altqqueue, pf_altqs[2]); 1477 #define V_pf_altqs VNET(pf_altqs) 1478 VNET_DECLARE(struct pf_palist, pf_pabuf); 1479 #define V_pf_pabuf VNET(pf_pabuf) 1480 1481 VNET_DECLARE(u_int32_t, ticket_altqs_active); 1482 #define V_ticket_altqs_active VNET(ticket_altqs_active) 1483 VNET_DECLARE(u_int32_t, ticket_altqs_inactive); 1484 #define V_ticket_altqs_inactive VNET(ticket_altqs_inactive) 1485 VNET_DECLARE(int, altqs_inactive_open); 1486 #define V_altqs_inactive_open VNET(altqs_inactive_open) 1487 VNET_DECLARE(u_int32_t, ticket_pabuf); 1488 #define V_ticket_pabuf VNET(ticket_pabuf) 1489 VNET_DECLARE(struct pf_altqqueue *, pf_altqs_active); 1490 #define V_pf_altqs_active VNET(pf_altqs_active) 1491 VNET_DECLARE(struct pf_altqqueue *, pf_altqs_inactive); 1492 #define V_pf_altqs_inactive VNET(pf_altqs_inactive) 1493 1494 VNET_DECLARE(struct pf_rulequeue, pf_unlinked_rules); 1495 #define V_pf_unlinked_rules VNET(pf_unlinked_rules) 1496 1497 void pf_initialize(void); 1498 void pf_mtag_initialize(void); 1499 void pf_mtag_cleanup(void); 1500 void pf_cleanup(void); 1501 1502 struct pf_mtag *pf_get_mtag(struct mbuf *); 1503 1504 extern void pf_calc_skip_steps(struct pf_rulequeue *); 1505 #ifdef ALTQ 1506 extern void pf_altq_ifnet_event(struct ifnet *, int); 1507 #endif 1508 VNET_DECLARE(uma_zone_t, pf_state_z); 1509 #define V_pf_state_z VNET(pf_state_z) 1510 VNET_DECLARE(uma_zone_t, pf_state_key_z); 1511 #define V_pf_state_key_z VNET(pf_state_key_z) 1512 VNET_DECLARE(uma_zone_t, pf_state_scrub_z); 1513 #define V_pf_state_scrub_z VNET(pf_state_scrub_z) 1514 1515 extern void pf_purge_thread(void *); 1516 extern void pf_intr(void *); 1517 extern void pf_purge_expired_src_nodes(void); 1518 1519 extern int pf_unlink_state(struct pf_state *, u_int); 1520 #define PF_ENTER_LOCKED 0x00000001 1521 #define PF_RETURN_LOCKED 0x00000002 1522 extern int pf_state_insert(struct pfi_kif *, 1523 struct pf_state_key *, 1524 struct pf_state_key *, 1525 struct pf_state *); 1526 extern void pf_free_state(struct pf_state *); 1527 1528 static __inline void 1529 pf_ref_state(struct pf_state *s) 1530 { 1531 1532 refcount_acquire(&s->refs); 1533 } 1534 1535 static __inline int 1536 pf_release_state(struct pf_state *s) 1537 { 1538 1539 if (refcount_release(&s->refs)) { 1540 pf_free_state(s); 1541 return (1); 1542 } else 1543 return (0); 1544 } 1545 1546 extern struct pf_state *pf_find_state_byid(uint64_t, uint32_t); 1547 extern struct pf_state *pf_find_state_all(struct pf_state_key_cmp *, 1548 u_int, int *); 1549 extern struct pf_src_node *pf_find_src_node(struct pf_addr *, 1550 struct pf_rule *, sa_family_t, int); 1551 extern void pf_unlink_src_node(struct pf_src_node *); 1552 extern u_int pf_free_src_nodes(struct pf_src_node_list *); 1553 extern void pf_print_state(struct pf_state *); 1554 extern void pf_print_flags(u_int8_t); 1555 extern u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t, 1556 u_int8_t); 1557 extern u_int16_t pf_proto_cksum_fixup(struct mbuf *, u_int16_t, 1558 u_int16_t, u_int16_t, u_int8_t); 1559 1560 VNET_DECLARE(struct ifnet *, sync_ifp); 1561 #define V_sync_ifp VNET(sync_ifp); 1562 VNET_DECLARE(struct pf_rule, pf_default_rule); 1563 #define V_pf_default_rule VNET(pf_default_rule) 1564 extern void pf_addrcpy(struct pf_addr *, struct pf_addr *, 1565 u_int8_t); 1566 void pf_free_rule(struct pf_rule *); 1567 1568 #ifdef INET 1569 int pf_test(int, struct ifnet *, struct mbuf **, struct inpcb *); 1570 int pf_normalize_ip(struct mbuf **, int, struct pfi_kif *, u_short *, 1571 struct pf_pdesc *); 1572 #endif /* INET */ 1573 1574 #ifdef INET6 1575 int pf_test6(int, struct ifnet *, struct mbuf **, struct inpcb *); 1576 int pf_normalize_ip6(struct mbuf **, int, struct pfi_kif *, u_short *, 1577 struct pf_pdesc *); 1578 void pf_poolmask(struct pf_addr *, struct pf_addr*, 1579 struct pf_addr *, struct pf_addr *, u_int8_t); 1580 void pf_addr_inc(struct pf_addr *, sa_family_t); 1581 int pf_refragment6(struct ifnet *, struct mbuf **, struct m_tag *); 1582 #endif /* INET6 */ 1583 1584 u_int32_t pf_new_isn(struct pf_state *); 1585 void *pf_pull_hdr(struct mbuf *, int, void *, int, u_short *, u_short *, 1586 sa_family_t); 1587 void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t); 1588 void pf_change_proto_a(struct mbuf *, void *, u_int16_t *, u_int32_t, 1589 u_int8_t); 1590 void pf_change_tcp_a(struct mbuf *, void *, u_int16_t *, u_int32_t); 1591 void pf_send_deferred_syn(struct pf_state *); 1592 int pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *, 1593 struct pf_addr *, sa_family_t); 1594 int pf_match_addr_range(struct pf_addr *, struct pf_addr *, 1595 struct pf_addr *, sa_family_t); 1596 int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t); 1597 1598 void pf_normalize_init(void); 1599 void pf_normalize_cleanup(void); 1600 int pf_normalize_tcp(int, struct pfi_kif *, struct mbuf *, int, int, void *, 1601 struct pf_pdesc *); 1602 void pf_normalize_tcp_cleanup(struct pf_state *); 1603 int pf_normalize_tcp_init(struct mbuf *, int, struct pf_pdesc *, 1604 struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *); 1605 int pf_normalize_tcp_stateful(struct mbuf *, int, struct pf_pdesc *, 1606 u_short *, struct tcphdr *, struct pf_state *, 1607 struct pf_state_peer *, struct pf_state_peer *, int *); 1608 u_int32_t 1609 pf_state_expires(const struct pf_state *); 1610 void pf_purge_expired_fragments(void); 1611 int pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kif *, 1612 int); 1613 int pf_socket_lookup(int, struct pf_pdesc *, struct mbuf *); 1614 struct pf_state_key *pf_alloc_state_key(int); 1615 void pfr_initialize(void); 1616 void pfr_cleanup(void); 1617 int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t); 1618 void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t, 1619 u_int64_t, int, int, int); 1620 int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, sa_family_t); 1621 void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *); 1622 struct pfr_ktable * 1623 pfr_attach_table(struct pf_ruleset *, char *); 1624 void pfr_detach_table(struct pfr_ktable *); 1625 int pfr_clr_tables(struct pfr_table *, int *, int); 1626 int pfr_add_tables(struct pfr_table *, int, int *, int); 1627 int pfr_del_tables(struct pfr_table *, int, int *, int); 1628 int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int); 1629 int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int); 1630 int pfr_clr_tstats(struct pfr_table *, int, int *, int); 1631 int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int); 1632 int pfr_clr_addrs(struct pfr_table *, int *, int); 1633 int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *, long); 1634 int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1635 int); 1636 int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1637 int); 1638 int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1639 int *, int *, int *, int, u_int32_t); 1640 int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int); 1641 int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int); 1642 int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *, 1643 int); 1644 int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1645 int); 1646 int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int); 1647 int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int); 1648 int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int); 1649 int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *, 1650 int *, u_int32_t, int); 1651 1652 MALLOC_DECLARE(PFI_MTYPE); 1653 VNET_DECLARE(struct pfi_kif *, pfi_all); 1654 #define V_pfi_all VNET(pfi_all) 1655 1656 void pfi_initialize(void); 1657 void pfi_cleanup(void); 1658 void pfi_kif_ref(struct pfi_kif *); 1659 void pfi_kif_unref(struct pfi_kif *); 1660 struct pfi_kif *pfi_kif_find(const char *); 1661 struct pfi_kif *pfi_kif_attach(struct pfi_kif *, const char *); 1662 int pfi_kif_match(struct pfi_kif *, struct pfi_kif *); 1663 void pfi_kif_purge(void); 1664 int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *, 1665 sa_family_t); 1666 int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t); 1667 void pfi_dynaddr_remove(struct pfi_dynaddr *); 1668 void pfi_dynaddr_copyout(struct pf_addr_wrap *); 1669 void pfi_update_status(const char *, struct pf_status *); 1670 void pfi_get_ifaces(const char *, struct pfi_kif *, int *); 1671 int pfi_set_flags(const char *, int); 1672 int pfi_clear_flags(const char *, int); 1673 1674 int pf_match_tag(struct mbuf *, struct pf_rule *, int *, int); 1675 int pf_tag_packet(struct mbuf *, struct pf_pdesc *, int); 1676 int pf_addr_cmp(struct pf_addr *, struct pf_addr *, 1677 sa_family_t); 1678 void pf_qid2qname(u_int32_t, char *); 1679 1680 VNET_DECLARE(struct pf_kstatus, pf_status); 1681 #define V_pf_status VNET(pf_status) 1682 1683 struct pf_limit { 1684 uma_zone_t zone; 1685 u_int limit; 1686 }; 1687 VNET_DECLARE(struct pf_limit, pf_limits[PF_LIMIT_MAX]); 1688 #define V_pf_limits VNET(pf_limits) 1689 1690 #endif /* _KERNEL */ 1691 1692 #ifdef _KERNEL 1693 VNET_DECLARE(struct pf_anchor_global, pf_anchors); 1694 #define V_pf_anchors VNET(pf_anchors) 1695 VNET_DECLARE(struct pf_anchor, pf_main_anchor); 1696 #define V_pf_main_anchor VNET(pf_main_anchor) 1697 #define pf_main_ruleset V_pf_main_anchor.ruleset 1698 #endif 1699 1700 /* these ruleset functions can be linked into userland programs (pfctl) */ 1701 int pf_get_ruleset_number(u_int8_t); 1702 void pf_init_ruleset(struct pf_ruleset *); 1703 int pf_anchor_setup(struct pf_rule *, 1704 const struct pf_ruleset *, const char *); 1705 int pf_anchor_copyout(const struct pf_ruleset *, 1706 const struct pf_rule *, struct pfioc_rule *); 1707 void pf_anchor_remove(struct pf_rule *); 1708 void pf_remove_if_empty_ruleset(struct pf_ruleset *); 1709 struct pf_ruleset *pf_find_ruleset(const char *); 1710 struct pf_ruleset *pf_find_or_create_ruleset(const char *); 1711 void pf_rs_initialize(void); 1712 1713 /* The fingerprint functions can be linked into userland programs (tcpdump) */ 1714 int pf_osfp_add(struct pf_osfp_ioctl *); 1715 #ifdef _KERNEL 1716 struct pf_osfp_enlist * 1717 pf_osfp_fingerprint(struct pf_pdesc *, struct mbuf *, int, 1718 const struct tcphdr *); 1719 #endif /* _KERNEL */ 1720 void pf_osfp_flush(void); 1721 int pf_osfp_get(struct pf_osfp_ioctl *); 1722 int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t); 1723 1724 #ifdef _KERNEL 1725 void pf_print_host(struct pf_addr *, u_int16_t, u_int8_t); 1726 1727 void pf_step_into_anchor(struct pf_anchor_stackframe *, int *, 1728 struct pf_ruleset **, int, struct pf_rule **, 1729 struct pf_rule **, int *); 1730 int pf_step_out_of_anchor(struct pf_anchor_stackframe *, int *, 1731 struct pf_ruleset **, int, struct pf_rule **, 1732 struct pf_rule **, int *); 1733 1734 int pf_map_addr(u_int8_t, struct pf_rule *, 1735 struct pf_addr *, struct pf_addr *, 1736 struct pf_addr *, struct pf_src_node **); 1737 struct pf_rule *pf_get_translation(struct pf_pdesc *, struct mbuf *, 1738 int, int, struct pfi_kif *, struct pf_src_node **, 1739 struct pf_state_key **, struct pf_state_key **, 1740 struct pf_addr *, struct pf_addr *, 1741 uint16_t, uint16_t, struct pf_anchor_stackframe *); 1742 1743 struct pf_state_key *pf_state_key_setup(struct pf_pdesc *, struct pf_addr *, 1744 struct pf_addr *, u_int16_t, u_int16_t); 1745 struct pf_state_key *pf_state_key_clone(struct pf_state_key *); 1746 #endif /* _KERNEL */ 1747 1748 #endif /* _NET_PFVAR_H_ */
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