1 /* 2 * Copyright (c) 2001 Daniel Hartmeier 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 9 * - Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * - Redistributions in binary form must reproduce the above 12 * copyright notice, this list of conditions and the following 13 * disclaimer in the documentation and/or other materials provided 14 * with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 19 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 20 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 22 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 24 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 26 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 27 * POSSIBILITY OF SUCH DAMAGE. 28 * 29 * $OpenBSD: pfvar.h,v 1.282 2009/01/29 15:12:28 pyr Exp $ 30 * $FreeBSD$ 31 */ 32 33 #ifndef _NET_PFVAR_H_ 34 #define _NET_PFVAR_H_ 35 36 #include <sys/param.h> 37 #include <sys/queue.h> 38 #include <sys/counter.h> 39 #include <sys/malloc.h> 40 #include <sys/refcount.h> 41 #include <sys/tree.h> 42 #include <vm/uma.h> 43 44 #include <net/radix.h> 45 #include <netinet/in.h> 46 47 #include <netpfil/pf/pf.h> 48 #include <netpfil/pf/pf_altq.h> 49 #include <netpfil/pf/pf_mtag.h> 50 51 struct pf_addr { 52 union { 53 struct in_addr v4; 54 struct in6_addr v6; 55 u_int8_t addr8[16]; 56 u_int16_t addr16[8]; 57 u_int32_t addr32[4]; 58 } pfa; /* 128-bit address */ 59 #define v4 pfa.v4 60 #define v6 pfa.v6 61 #define addr8 pfa.addr8 62 #define addr16 pfa.addr16 63 #define addr32 pfa.addr32 64 }; 65 66 #define PFI_AFLAG_NETWORK 0x01 67 #define PFI_AFLAG_BROADCAST 0x02 68 #define PFI_AFLAG_PEER 0x04 69 #define PFI_AFLAG_MODEMASK 0x07 70 #define PFI_AFLAG_NOALIAS 0x08 71 72 struct pf_addr_wrap { 73 union { 74 struct { 75 struct pf_addr addr; 76 struct pf_addr mask; 77 } a; 78 char ifname[IFNAMSIZ]; 79 char tblname[PF_TABLE_NAME_SIZE]; 80 } v; 81 union { 82 struct pfi_dynaddr *dyn; 83 struct pfr_ktable *tbl; 84 int dyncnt; 85 int tblcnt; 86 } p; 87 u_int8_t type; /* PF_ADDR_* */ 88 u_int8_t iflags; /* PFI_AFLAG_* */ 89 }; 90 91 #ifdef _KERNEL 92 93 struct pfi_dynaddr { 94 TAILQ_ENTRY(pfi_dynaddr) entry; 95 struct pf_addr pfid_addr4; 96 struct pf_addr pfid_mask4; 97 struct pf_addr pfid_addr6; 98 struct pf_addr pfid_mask6; 99 struct pfr_ktable *pfid_kt; 100 struct pfi_kif *pfid_kif; 101 int pfid_net; /* mask or 128 */ 102 int pfid_acnt4; /* address count IPv4 */ 103 int pfid_acnt6; /* address count IPv6 */ 104 sa_family_t pfid_af; /* rule af */ 105 u_int8_t pfid_iflags; /* PFI_AFLAG_* */ 106 }; 107 108 /* 109 * Address manipulation macros 110 */ 111 #define HTONL(x) (x) = htonl((__uint32_t)(x)) 112 #define HTONS(x) (x) = htons((__uint16_t)(x)) 113 #define NTOHL(x) (x) = ntohl((__uint32_t)(x)) 114 #define NTOHS(x) (x) = ntohs((__uint16_t)(x)) 115 116 #define PF_NAME "pf" 117 118 #define PF_HASHROW_ASSERT(h) mtx_assert(&(h)->lock, MA_OWNED) 119 #define PF_HASHROW_LOCK(h) mtx_lock(&(h)->lock) 120 #define PF_HASHROW_UNLOCK(h) mtx_unlock(&(h)->lock) 121 122 #define PF_STATE_LOCK(s) \ 123 do { \ 124 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(s)]; \ 125 PF_HASHROW_LOCK(_ih); \ 126 } while (0) 127 128 #define PF_STATE_UNLOCK(s) \ 129 do { \ 130 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH((s))]; \ 131 PF_HASHROW_UNLOCK(_ih); \ 132 } while (0) 133 134 #ifdef INVARIANTS 135 #define PF_STATE_LOCK_ASSERT(s) \ 136 do { \ 137 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(s)]; \ 138 PF_HASHROW_ASSERT(_ih); \ 139 } while (0) 140 #else /* !INVARIANTS */ 141 #define PF_STATE_LOCK_ASSERT(s) do {} while (0) 142 #endif /* INVARIANTS */ 143 144 extern struct mtx pf_unlnkdrules_mtx; 145 #define PF_UNLNKDRULES_LOCK() mtx_lock(&pf_unlnkdrules_mtx) 146 #define PF_UNLNKDRULES_UNLOCK() mtx_unlock(&pf_unlnkdrules_mtx) 147 148 extern struct rwlock pf_rules_lock; 149 #define PF_RULES_RLOCK() rw_rlock(&pf_rules_lock) 150 #define PF_RULES_RUNLOCK() rw_runlock(&pf_rules_lock) 151 #define PF_RULES_WLOCK() rw_wlock(&pf_rules_lock) 152 #define PF_RULES_WUNLOCK() rw_wunlock(&pf_rules_lock) 153 #define PF_RULES_ASSERT() rw_assert(&pf_rules_lock, RA_LOCKED) 154 #define PF_RULES_RASSERT() rw_assert(&pf_rules_lock, RA_RLOCKED) 155 #define PF_RULES_WASSERT() rw_assert(&pf_rules_lock, RA_WLOCKED) 156 157 extern struct sx pf_end_lock; 158 159 #define PF_MODVER 1 160 #define PFLOG_MODVER 1 161 #define PFSYNC_MODVER 1 162 163 #define PFLOG_MINVER 1 164 #define PFLOG_PREFVER PFLOG_MODVER 165 #define PFLOG_MAXVER 1 166 #define PFSYNC_MINVER 1 167 #define PFSYNC_PREFVER PFSYNC_MODVER 168 #define PFSYNC_MAXVER 1 169 170 #ifdef INET 171 #ifndef INET6 172 #define PF_INET_ONLY 173 #endif /* ! INET6 */ 174 #endif /* INET */ 175 176 #ifdef INET6 177 #ifndef INET 178 #define PF_INET6_ONLY 179 #endif /* ! INET */ 180 #endif /* INET6 */ 181 182 #ifdef INET 183 #ifdef INET6 184 #define PF_INET_INET6 185 #endif /* INET6 */ 186 #endif /* INET */ 187 188 #else 189 190 #define PF_INET_INET6 191 192 #endif /* _KERNEL */ 193 194 /* Both IPv4 and IPv6 */ 195 #ifdef PF_INET_INET6 196 197 #define PF_AEQ(a, b, c) \ 198 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \ 199 (c == AF_INET6 && (a)->addr32[3] == (b)->addr32[3] && \ 200 (a)->addr32[2] == (b)->addr32[2] && \ 201 (a)->addr32[1] == (b)->addr32[1] && \ 202 (a)->addr32[0] == (b)->addr32[0])) \ 203 204 #define PF_ANEQ(a, b, c) \ 205 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \ 206 (c == AF_INET6 && ((a)->addr32[0] != (b)->addr32[0] || \ 207 (a)->addr32[1] != (b)->addr32[1] || \ 208 (a)->addr32[2] != (b)->addr32[2] || \ 209 (a)->addr32[3] != (b)->addr32[3]))) \ 210 211 #define PF_AZERO(a, c) \ 212 ((c == AF_INET && !(a)->addr32[0]) || \ 213 (c == AF_INET6 && !(a)->addr32[0] && !(a)->addr32[1] && \ 214 !(a)->addr32[2] && !(a)->addr32[3] )) \ 215 216 #define PF_MATCHA(n, a, m, b, f) \ 217 pf_match_addr(n, a, m, b, f) 218 219 #define PF_ACPY(a, b, f) \ 220 pf_addrcpy(a, b, f) 221 222 #define PF_AINC(a, f) \ 223 pf_addr_inc(a, f) 224 225 #define PF_POOLMASK(a, b, c, d, f) \ 226 pf_poolmask(a, b, c, d, f) 227 228 #else 229 230 /* Just IPv6 */ 231 232 #ifdef PF_INET6_ONLY 233 234 #define PF_AEQ(a, b, c) \ 235 ((a)->addr32[3] == (b)->addr32[3] && \ 236 (a)->addr32[2] == (b)->addr32[2] && \ 237 (a)->addr32[1] == (b)->addr32[1] && \ 238 (a)->addr32[0] == (b)->addr32[0]) \ 239 240 #define PF_ANEQ(a, b, c) \ 241 ((a)->addr32[3] != (b)->addr32[3] || \ 242 (a)->addr32[2] != (b)->addr32[2] || \ 243 (a)->addr32[1] != (b)->addr32[1] || \ 244 (a)->addr32[0] != (b)->addr32[0]) \ 245 246 #define PF_AZERO(a, c) \ 247 (!(a)->addr32[0] && \ 248 !(a)->addr32[1] && \ 249 !(a)->addr32[2] && \ 250 !(a)->addr32[3] ) \ 251 252 #define PF_MATCHA(n, a, m, b, f) \ 253 pf_match_addr(n, a, m, b, f) 254 255 #define PF_ACPY(a, b, f) \ 256 pf_addrcpy(a, b, f) 257 258 #define PF_AINC(a, f) \ 259 pf_addr_inc(a, f) 260 261 #define PF_POOLMASK(a, b, c, d, f) \ 262 pf_poolmask(a, b, c, d, f) 263 264 #else 265 266 /* Just IPv4 */ 267 #ifdef PF_INET_ONLY 268 269 #define PF_AEQ(a, b, c) \ 270 ((a)->addr32[0] == (b)->addr32[0]) 271 272 #define PF_ANEQ(a, b, c) \ 273 ((a)->addr32[0] != (b)->addr32[0]) 274 275 #define PF_AZERO(a, c) \ 276 (!(a)->addr32[0]) 277 278 #define PF_MATCHA(n, a, m, b, f) \ 279 pf_match_addr(n, a, m, b, f) 280 281 #define PF_ACPY(a, b, f) \ 282 (a)->v4.s_addr = (b)->v4.s_addr 283 284 #define PF_AINC(a, f) \ 285 do { \ 286 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \ 287 } while (0) 288 289 #define PF_POOLMASK(a, b, c, d, f) \ 290 do { \ 291 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \ 292 (((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \ 293 } while (0) 294 295 #endif /* PF_INET_ONLY */ 296 #endif /* PF_INET6_ONLY */ 297 #endif /* PF_INET_INET6 */ 298 299 /* 300 * XXX callers not FIB-aware in our version of pf yet. 301 * OpenBSD fixed it later it seems, 2010/05/07 13:33:16 claudio. 302 */ 303 #define PF_MISMATCHAW(aw, x, af, neg, ifp, rtid) \ 304 ( \ 305 (((aw)->type == PF_ADDR_NOROUTE && \ 306 pf_routable((x), (af), NULL, (rtid))) || \ 307 (((aw)->type == PF_ADDR_URPFFAILED && (ifp) != NULL && \ 308 pf_routable((x), (af), (ifp), (rtid))) || \ 309 ((aw)->type == PF_ADDR_TABLE && \ 310 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \ 311 ((aw)->type == PF_ADDR_DYNIFTL && \ 312 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \ 313 ((aw)->type == PF_ADDR_RANGE && \ 314 !pf_match_addr_range(&(aw)->v.a.addr, \ 315 &(aw)->v.a.mask, (x), (af))) || \ 316 ((aw)->type == PF_ADDR_ADDRMASK && \ 317 !PF_AZERO(&(aw)->v.a.mask, (af)) && \ 318 !PF_MATCHA(0, &(aw)->v.a.addr, \ 319 &(aw)->v.a.mask, (x), (af))))) != \ 320 (neg) \ 321 ) 322 323 324 struct pf_rule_uid { 325 uid_t uid[2]; 326 u_int8_t op; 327 }; 328 329 struct pf_rule_gid { 330 uid_t gid[2]; 331 u_int8_t op; 332 }; 333 334 struct pf_rule_addr { 335 struct pf_addr_wrap addr; 336 u_int16_t port[2]; 337 u_int8_t neg; 338 u_int8_t port_op; 339 }; 340 341 struct pf_pooladdr { 342 struct pf_addr_wrap addr; 343 TAILQ_ENTRY(pf_pooladdr) entries; 344 char ifname[IFNAMSIZ]; 345 struct pfi_kif *kif; 346 }; 347 348 TAILQ_HEAD(pf_palist, pf_pooladdr); 349 350 struct pf_poolhashkey { 351 union { 352 u_int8_t key8[16]; 353 u_int16_t key16[8]; 354 u_int32_t key32[4]; 355 } pfk; /* 128-bit hash key */ 356 #define key8 pfk.key8 357 #define key16 pfk.key16 358 #define key32 pfk.key32 359 }; 360 361 struct pf_pool { 362 struct pf_palist list; 363 struct pf_pooladdr *cur; 364 struct pf_poolhashkey key; 365 struct pf_addr counter; 366 int tblidx; 367 u_int16_t proxy_port[2]; 368 u_int8_t opts; 369 }; 370 371 372 /* A packed Operating System description for fingerprinting */ 373 typedef u_int32_t pf_osfp_t; 374 #define PF_OSFP_ANY ((pf_osfp_t)0) 375 #define PF_OSFP_UNKNOWN ((pf_osfp_t)-1) 376 #define PF_OSFP_NOMATCH ((pf_osfp_t)-2) 377 378 struct pf_osfp_entry { 379 SLIST_ENTRY(pf_osfp_entry) fp_entry; 380 pf_osfp_t fp_os; 381 int fp_enflags; 382 #define PF_OSFP_EXPANDED 0x001 /* expanded entry */ 383 #define PF_OSFP_GENERIC 0x002 /* generic signature */ 384 #define PF_OSFP_NODETAIL 0x004 /* no p0f details */ 385 #define PF_OSFP_LEN 32 386 char fp_class_nm[PF_OSFP_LEN]; 387 char fp_version_nm[PF_OSFP_LEN]; 388 char fp_subtype_nm[PF_OSFP_LEN]; 389 }; 390 #define PF_OSFP_ENTRY_EQ(a, b) \ 391 ((a)->fp_os == (b)->fp_os && \ 392 memcmp((a)->fp_class_nm, (b)->fp_class_nm, PF_OSFP_LEN) == 0 && \ 393 memcmp((a)->fp_version_nm, (b)->fp_version_nm, PF_OSFP_LEN) == 0 && \ 394 memcmp((a)->fp_subtype_nm, (b)->fp_subtype_nm, PF_OSFP_LEN) == 0) 395 396 /* handle pf_osfp_t packing */ 397 #define _FP_RESERVED_BIT 1 /* For the special negative #defines */ 398 #define _FP_UNUSED_BITS 1 399 #define _FP_CLASS_BITS 10 /* OS Class (Windows, Linux) */ 400 #define _FP_VERSION_BITS 10 /* OS version (95, 98, NT, 2.4.54, 3.2) */ 401 #define _FP_SUBTYPE_BITS 10 /* patch level (NT SP4, SP3, ECN patch) */ 402 #define PF_OSFP_UNPACK(osfp, class, version, subtype) do { \ 403 (class) = ((osfp) >> (_FP_VERSION_BITS+_FP_SUBTYPE_BITS)) & \ 404 ((1 << _FP_CLASS_BITS) - 1); \ 405 (version) = ((osfp) >> _FP_SUBTYPE_BITS) & \ 406 ((1 << _FP_VERSION_BITS) - 1);\ 407 (subtype) = (osfp) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 408 } while(0) 409 #define PF_OSFP_PACK(osfp, class, version, subtype) do { \ 410 (osfp) = ((class) & ((1 << _FP_CLASS_BITS) - 1)) << (_FP_VERSION_BITS \ 411 + _FP_SUBTYPE_BITS); \ 412 (osfp) |= ((version) & ((1 << _FP_VERSION_BITS) - 1)) << \ 413 _FP_SUBTYPE_BITS; \ 414 (osfp) |= (subtype) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 415 } while(0) 416 417 /* the fingerprint of an OSes TCP SYN packet */ 418 typedef u_int64_t pf_tcpopts_t; 419 struct pf_os_fingerprint { 420 SLIST_HEAD(pf_osfp_enlist, pf_osfp_entry) fp_oses; /* list of matches */ 421 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 422 u_int16_t fp_wsize; /* TCP window size */ 423 u_int16_t fp_psize; /* ip->ip_len */ 424 u_int16_t fp_mss; /* TCP MSS */ 425 u_int16_t fp_flags; 426 #define PF_OSFP_WSIZE_MOD 0x0001 /* Window modulus */ 427 #define PF_OSFP_WSIZE_DC 0x0002 /* Window don't care */ 428 #define PF_OSFP_WSIZE_MSS 0x0004 /* Window multiple of MSS */ 429 #define PF_OSFP_WSIZE_MTU 0x0008 /* Window multiple of MTU */ 430 #define PF_OSFP_PSIZE_MOD 0x0010 /* packet size modulus */ 431 #define PF_OSFP_PSIZE_DC 0x0020 /* packet size don't care */ 432 #define PF_OSFP_WSCALE 0x0040 /* TCP window scaling */ 433 #define PF_OSFP_WSCALE_MOD 0x0080 /* TCP window scale modulus */ 434 #define PF_OSFP_WSCALE_DC 0x0100 /* TCP window scale dont-care */ 435 #define PF_OSFP_MSS 0x0200 /* TCP MSS */ 436 #define PF_OSFP_MSS_MOD 0x0400 /* TCP MSS modulus */ 437 #define PF_OSFP_MSS_DC 0x0800 /* TCP MSS dont-care */ 438 #define PF_OSFP_DF 0x1000 /* IPv4 don't fragment bit */ 439 #define PF_OSFP_TS0 0x2000 /* Zero timestamp */ 440 #define PF_OSFP_INET6 0x4000 /* IPv6 */ 441 u_int8_t fp_optcnt; /* TCP option count */ 442 u_int8_t fp_wscale; /* TCP window scaling */ 443 u_int8_t fp_ttl; /* IPv4 TTL */ 444 #define PF_OSFP_MAXTTL_OFFSET 40 445 /* TCP options packing */ 446 #define PF_OSFP_TCPOPT_NOP 0x0 /* TCP NOP option */ 447 #define PF_OSFP_TCPOPT_WSCALE 0x1 /* TCP window scaling option */ 448 #define PF_OSFP_TCPOPT_MSS 0x2 /* TCP max segment size opt */ 449 #define PF_OSFP_TCPOPT_SACK 0x3 /* TCP SACK OK option */ 450 #define PF_OSFP_TCPOPT_TS 0x4 /* TCP timestamp option */ 451 #define PF_OSFP_TCPOPT_BITS 3 /* bits used by each option */ 452 #define PF_OSFP_MAX_OPTS \ 453 (sizeof(((struct pf_os_fingerprint *)0)->fp_tcpopts) * 8) \ 454 / PF_OSFP_TCPOPT_BITS 455 456 SLIST_ENTRY(pf_os_fingerprint) fp_next; 457 }; 458 459 struct pf_osfp_ioctl { 460 struct pf_osfp_entry fp_os; 461 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 462 u_int16_t fp_wsize; /* TCP window size */ 463 u_int16_t fp_psize; /* ip->ip_len */ 464 u_int16_t fp_mss; /* TCP MSS */ 465 u_int16_t fp_flags; 466 u_int8_t fp_optcnt; /* TCP option count */ 467 u_int8_t fp_wscale; /* TCP window scaling */ 468 u_int8_t fp_ttl; /* IPv4 TTL */ 469 470 int fp_getnum; /* DIOCOSFPGET number */ 471 }; 472 473 474 union pf_rule_ptr { 475 struct pf_rule *ptr; 476 u_int32_t nr; 477 }; 478 479 #define PF_ANCHOR_NAME_SIZE 64 480 481 struct pf_rule { 482 struct pf_rule_addr src; 483 struct pf_rule_addr dst; 484 #define PF_SKIP_IFP 0 485 #define PF_SKIP_DIR 1 486 #define PF_SKIP_AF 2 487 #define PF_SKIP_PROTO 3 488 #define PF_SKIP_SRC_ADDR 4 489 #define PF_SKIP_SRC_PORT 5 490 #define PF_SKIP_DST_ADDR 6 491 #define PF_SKIP_DST_PORT 7 492 #define PF_SKIP_COUNT 8 493 union pf_rule_ptr skip[PF_SKIP_COUNT]; 494 #define PF_RULE_LABEL_SIZE 64 495 char label[PF_RULE_LABEL_SIZE]; 496 char ifname[IFNAMSIZ]; 497 char qname[PF_QNAME_SIZE]; 498 char pqname[PF_QNAME_SIZE]; 499 #define PF_TAG_NAME_SIZE 64 500 char tagname[PF_TAG_NAME_SIZE]; 501 char match_tagname[PF_TAG_NAME_SIZE]; 502 503 char overload_tblname[PF_TABLE_NAME_SIZE]; 504 505 TAILQ_ENTRY(pf_rule) entries; 506 struct pf_pool rpool; 507 508 u_int64_t evaluations; 509 u_int64_t packets[2]; 510 u_int64_t bytes[2]; 511 512 struct pfi_kif *kif; 513 struct pf_anchor *anchor; 514 struct pfr_ktable *overload_tbl; 515 516 pf_osfp_t os_fingerprint; 517 518 int rtableid; 519 u_int32_t timeout[PFTM_MAX]; 520 u_int32_t max_states; 521 u_int32_t max_src_nodes; 522 u_int32_t max_src_states; 523 u_int32_t max_src_conn; 524 struct { 525 u_int32_t limit; 526 u_int32_t seconds; 527 } max_src_conn_rate; 528 u_int32_t qid; 529 u_int32_t pqid; 530 u_int32_t rt_listid; 531 u_int32_t nr; 532 u_int32_t prob; 533 uid_t cuid; 534 pid_t cpid; 535 536 counter_u64_t states_cur; 537 counter_u64_t states_tot; 538 counter_u64_t src_nodes; 539 540 u_int16_t return_icmp; 541 u_int16_t return_icmp6; 542 u_int16_t max_mss; 543 u_int16_t tag; 544 u_int16_t match_tag; 545 u_int16_t scrub_flags; 546 547 struct pf_rule_uid uid; 548 struct pf_rule_gid gid; 549 550 u_int32_t rule_flag; 551 u_int8_t action; 552 u_int8_t direction; 553 u_int8_t log; 554 u_int8_t logif; 555 u_int8_t quick; 556 u_int8_t ifnot; 557 u_int8_t match_tag_not; 558 u_int8_t natpass; 559 560 #define PF_STATE_NORMAL 0x1 561 #define PF_STATE_MODULATE 0x2 562 #define PF_STATE_SYNPROXY 0x3 563 u_int8_t keep_state; 564 sa_family_t af; 565 u_int8_t proto; 566 u_int8_t type; 567 u_int8_t code; 568 u_int8_t flags; 569 u_int8_t flagset; 570 u_int8_t min_ttl; 571 u_int8_t allow_opts; 572 u_int8_t rt; 573 u_int8_t return_ttl; 574 u_int8_t tos; 575 u_int8_t set_tos; 576 u_int8_t anchor_relative; 577 u_int8_t anchor_wildcard; 578 579 #define PF_FLUSH 0x01 580 #define PF_FLUSH_GLOBAL 0x02 581 u_int8_t flush; 582 #define PF_PRIO_ZERO 0xff /* match "prio 0" packets */ 583 #define PF_PRIO_MAX 7 584 u_int8_t prio; 585 u_int8_t set_prio[2]; 586 587 struct { 588 struct pf_addr addr; 589 u_int16_t port; 590 } divert; 591 592 uint64_t u_states_cur; 593 uint64_t u_states_tot; 594 uint64_t u_src_nodes; 595 }; 596 597 /* rule flags */ 598 #define PFRULE_DROP 0x0000 599 #define PFRULE_RETURNRST 0x0001 600 #define PFRULE_FRAGMENT 0x0002 601 #define PFRULE_RETURNICMP 0x0004 602 #define PFRULE_RETURN 0x0008 603 #define PFRULE_NOSYNC 0x0010 604 #define PFRULE_SRCTRACK 0x0020 /* track source states */ 605 #define PFRULE_RULESRCTRACK 0x0040 /* per rule */ 606 #define PFRULE_REFS 0x0080 /* rule has references */ 607 608 /* scrub flags */ 609 #define PFRULE_NODF 0x0100 610 #define PFRULE_RANDOMID 0x0800 611 #define PFRULE_REASSEMBLE_TCP 0x1000 612 #define PFRULE_SET_TOS 0x2000 613 614 /* rule flags again */ 615 #define PFRULE_IFBOUND 0x00010000 /* if-bound */ 616 #define PFRULE_STATESLOPPY 0x00020000 /* sloppy state tracking */ 617 618 #define PFSTATE_HIWAT 10000 /* default state table size */ 619 #define PFSTATE_ADAPT_START 6000 /* default adaptive timeout start */ 620 #define PFSTATE_ADAPT_END 12000 /* default adaptive timeout end */ 621 622 623 struct pf_threshold { 624 u_int32_t limit; 625 #define PF_THRESHOLD_MULT 1000 626 #define PF_THRESHOLD_MAX 0xffffffff / PF_THRESHOLD_MULT 627 u_int32_t seconds; 628 u_int32_t count; 629 u_int32_t last; 630 }; 631 632 struct pf_src_node { 633 LIST_ENTRY(pf_src_node) entry; 634 struct pf_addr addr; 635 struct pf_addr raddr; 636 union pf_rule_ptr rule; 637 struct pfi_kif *kif; 638 u_int64_t bytes[2]; 639 u_int64_t packets[2]; 640 u_int32_t states; 641 u_int32_t conn; 642 struct pf_threshold conn_rate; 643 u_int32_t creation; 644 u_int32_t expire; 645 sa_family_t af; 646 u_int8_t ruletype; 647 }; 648 649 #define PFSNODE_HIWAT 10000 /* default source node table size */ 650 651 struct pf_state_scrub { 652 struct timeval pfss_last; /* time received last packet */ 653 u_int32_t pfss_tsecr; /* last echoed timestamp */ 654 u_int32_t pfss_tsval; /* largest timestamp */ 655 u_int32_t pfss_tsval0; /* original timestamp */ 656 u_int16_t pfss_flags; 657 #define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */ 658 #define PFSS_PAWS 0x0010 /* stricter PAWS checks */ 659 #define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */ 660 #define PFSS_DATA_TS 0x0040 /* timestamp on data packets */ 661 #define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */ 662 u_int8_t pfss_ttl; /* stashed TTL */ 663 u_int8_t pad; 664 u_int32_t pfss_ts_mod; /* timestamp modulation */ 665 }; 666 667 struct pf_state_host { 668 struct pf_addr addr; 669 u_int16_t port; 670 u_int16_t pad; 671 }; 672 673 struct pf_state_peer { 674 struct pf_state_scrub *scrub; /* state is scrubbed */ 675 u_int32_t seqlo; /* Max sequence number sent */ 676 u_int32_t seqhi; /* Max the other end ACKd + win */ 677 u_int32_t seqdiff; /* Sequence number modulator */ 678 u_int16_t max_win; /* largest window (pre scaling) */ 679 u_int16_t mss; /* Maximum segment size option */ 680 u_int8_t state; /* active state level */ 681 u_int8_t wscale; /* window scaling factor */ 682 u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */ 683 u_int8_t pad[1]; 684 }; 685 686 /* Keep synced with struct pf_state_key. */ 687 struct pf_state_key_cmp { 688 struct pf_addr addr[2]; 689 u_int16_t port[2]; 690 sa_family_t af; 691 u_int8_t proto; 692 u_int8_t pad[2]; 693 }; 694 695 struct pf_state_key { 696 struct pf_addr addr[2]; 697 u_int16_t port[2]; 698 sa_family_t af; 699 u_int8_t proto; 700 u_int8_t pad[2]; 701 702 LIST_ENTRY(pf_state_key) entry; 703 TAILQ_HEAD(, pf_state) states[2]; 704 }; 705 706 /* Keep synced with struct pf_state. */ 707 struct pf_state_cmp { 708 u_int64_t id; 709 u_int32_t creatorid; 710 u_int8_t direction; 711 u_int8_t pad[3]; 712 }; 713 714 struct pf_state { 715 u_int64_t id; 716 u_int32_t creatorid; 717 u_int8_t direction; 718 u_int8_t pad[3]; 719 720 u_int refs; 721 TAILQ_ENTRY(pf_state) sync_list; 722 TAILQ_ENTRY(pf_state) key_list[2]; 723 LIST_ENTRY(pf_state) entry; 724 struct pf_state_peer src; 725 struct pf_state_peer dst; 726 union pf_rule_ptr rule; 727 union pf_rule_ptr anchor; 728 union pf_rule_ptr nat_rule; 729 struct pf_addr rt_addr; 730 struct pf_state_key *key[2]; /* addresses stack and wire */ 731 struct pfi_kif *kif; 732 struct pfi_kif *rt_kif; 733 struct pf_src_node *src_node; 734 struct pf_src_node *nat_src_node; 735 u_int64_t packets[2]; 736 u_int64_t bytes[2]; 737 u_int32_t creation; 738 u_int32_t expire; 739 u_int32_t pfsync_time; 740 u_int16_t tag; 741 u_int8_t log; 742 u_int8_t state_flags; 743 #define PFSTATE_ALLOWOPTS 0x01 744 #define PFSTATE_SLOPPY 0x02 745 /* was PFSTATE_PFLOW 0x04 */ 746 #define PFSTATE_NOSYNC 0x08 747 #define PFSTATE_ACK 0x10 748 #define PFSTATE_SETPRIO 0x0200 749 #define PFSTATE_SETMASK (PFSTATE_SETPRIO) 750 u_int8_t timeout; 751 u_int8_t sync_state; /* PFSYNC_S_x */ 752 753 /* XXX */ 754 u_int8_t sync_updates; 755 u_int8_t _tail[3]; 756 }; 757 758 /* 759 * Unified state structures for pulling states out of the kernel 760 * used by pfsync(4) and the pf(4) ioctl. 761 */ 762 struct pfsync_state_scrub { 763 u_int16_t pfss_flags; 764 u_int8_t pfss_ttl; /* stashed TTL */ 765 #define PFSYNC_SCRUB_FLAG_VALID 0x01 766 u_int8_t scrub_flag; 767 u_int32_t pfss_ts_mod; /* timestamp modulation */ 768 } __packed; 769 770 struct pfsync_state_peer { 771 struct pfsync_state_scrub scrub; /* state is scrubbed */ 772 u_int32_t seqlo; /* Max sequence number sent */ 773 u_int32_t seqhi; /* Max the other end ACKd + win */ 774 u_int32_t seqdiff; /* Sequence number modulator */ 775 u_int16_t max_win; /* largest window (pre scaling) */ 776 u_int16_t mss; /* Maximum segment size option */ 777 u_int8_t state; /* active state level */ 778 u_int8_t wscale; /* window scaling factor */ 779 u_int8_t pad[6]; 780 } __packed; 781 782 struct pfsync_state_key { 783 struct pf_addr addr[2]; 784 u_int16_t port[2]; 785 }; 786 787 struct pfsync_state { 788 u_int64_t id; 789 char ifname[IFNAMSIZ]; 790 struct pfsync_state_key key[2]; 791 struct pfsync_state_peer src; 792 struct pfsync_state_peer dst; 793 struct pf_addr rt_addr; 794 u_int32_t rule; 795 u_int32_t anchor; 796 u_int32_t nat_rule; 797 u_int32_t creation; 798 u_int32_t expire; 799 u_int32_t packets[2][2]; 800 u_int32_t bytes[2][2]; 801 u_int32_t creatorid; 802 sa_family_t af; 803 u_int8_t proto; 804 u_int8_t direction; 805 u_int8_t __spare[2]; 806 u_int8_t log; 807 u_int8_t state_flags; 808 u_int8_t timeout; 809 u_int8_t sync_flags; 810 u_int8_t updates; 811 } __packed; 812 813 #ifdef _KERNEL 814 /* pfsync */ 815 typedef int pfsync_state_import_t(struct pfsync_state *, u_int8_t); 816 typedef void pfsync_insert_state_t(struct pf_state *); 817 typedef void pfsync_update_state_t(struct pf_state *); 818 typedef void pfsync_delete_state_t(struct pf_state *); 819 typedef void pfsync_clear_states_t(u_int32_t, const char *); 820 typedef int pfsync_defer_t(struct pf_state *, struct mbuf *); 821 822 extern pfsync_state_import_t *pfsync_state_import_ptr; 823 extern pfsync_insert_state_t *pfsync_insert_state_ptr; 824 extern pfsync_update_state_t *pfsync_update_state_ptr; 825 extern pfsync_delete_state_t *pfsync_delete_state_ptr; 826 extern pfsync_clear_states_t *pfsync_clear_states_ptr; 827 extern pfsync_defer_t *pfsync_defer_ptr; 828 829 void pfsync_state_export(struct pfsync_state *, 830 struct pf_state *); 831 832 /* pflog */ 833 struct pf_ruleset; 834 struct pf_pdesc; 835 typedef int pflog_packet_t(struct pfi_kif *, struct mbuf *, sa_family_t, 836 u_int8_t, u_int8_t, struct pf_rule *, struct pf_rule *, 837 struct pf_ruleset *, struct pf_pdesc *, int); 838 extern pflog_packet_t *pflog_packet_ptr; 839 840 #endif /* _KERNEL */ 841 842 #define PFSYNC_FLAG_SRCNODE 0x04 843 #define PFSYNC_FLAG_NATSRCNODE 0x08 844 845 /* for copies to/from network byte order */ 846 /* ioctl interface also uses network byte order */ 847 #define pf_state_peer_hton(s,d) do { \ 848 (d)->seqlo = htonl((s)->seqlo); \ 849 (d)->seqhi = htonl((s)->seqhi); \ 850 (d)->seqdiff = htonl((s)->seqdiff); \ 851 (d)->max_win = htons((s)->max_win); \ 852 (d)->mss = htons((s)->mss); \ 853 (d)->state = (s)->state; \ 854 (d)->wscale = (s)->wscale; \ 855 if ((s)->scrub) { \ 856 (d)->scrub.pfss_flags = \ 857 htons((s)->scrub->pfss_flags & PFSS_TIMESTAMP); \ 858 (d)->scrub.pfss_ttl = (s)->scrub->pfss_ttl; \ 859 (d)->scrub.pfss_ts_mod = htonl((s)->scrub->pfss_ts_mod);\ 860 (d)->scrub.scrub_flag = PFSYNC_SCRUB_FLAG_VALID; \ 861 } \ 862 } while (0) 863 864 #define pf_state_peer_ntoh(s,d) do { \ 865 (d)->seqlo = ntohl((s)->seqlo); \ 866 (d)->seqhi = ntohl((s)->seqhi); \ 867 (d)->seqdiff = ntohl((s)->seqdiff); \ 868 (d)->max_win = ntohs((s)->max_win); \ 869 (d)->mss = ntohs((s)->mss); \ 870 (d)->state = (s)->state; \ 871 (d)->wscale = (s)->wscale; \ 872 if ((s)->scrub.scrub_flag == PFSYNC_SCRUB_FLAG_VALID && \ 873 (d)->scrub != NULL) { \ 874 (d)->scrub->pfss_flags = \ 875 ntohs((s)->scrub.pfss_flags) & PFSS_TIMESTAMP; \ 876 (d)->scrub->pfss_ttl = (s)->scrub.pfss_ttl; \ 877 (d)->scrub->pfss_ts_mod = ntohl((s)->scrub.pfss_ts_mod);\ 878 } \ 879 } while (0) 880 881 #define pf_state_counter_hton(s,d) do { \ 882 d[0] = htonl((s>>32)&0xffffffff); \ 883 d[1] = htonl(s&0xffffffff); \ 884 } while (0) 885 886 #define pf_state_counter_from_pfsync(s) \ 887 (((u_int64_t)(s[0])<<32) | (u_int64_t)(s[1])) 888 889 #define pf_state_counter_ntoh(s,d) do { \ 890 d = ntohl(s[0]); \ 891 d = d<<32; \ 892 d += ntohl(s[1]); \ 893 } while (0) 894 895 TAILQ_HEAD(pf_rulequeue, pf_rule); 896 897 struct pf_anchor; 898 899 struct pf_ruleset { 900 struct { 901 struct pf_rulequeue queues[2]; 902 struct { 903 struct pf_rulequeue *ptr; 904 struct pf_rule **ptr_array; 905 u_int32_t rcount; 906 u_int32_t ticket; 907 int open; 908 } active, inactive; 909 } rules[PF_RULESET_MAX]; 910 struct pf_anchor *anchor; 911 u_int32_t tticket; 912 int tables; 913 int topen; 914 }; 915 916 RB_HEAD(pf_anchor_global, pf_anchor); 917 RB_HEAD(pf_anchor_node, pf_anchor); 918 struct pf_anchor { 919 RB_ENTRY(pf_anchor) entry_global; 920 RB_ENTRY(pf_anchor) entry_node; 921 struct pf_anchor *parent; 922 struct pf_anchor_node children; 923 char name[PF_ANCHOR_NAME_SIZE]; 924 char path[MAXPATHLEN]; 925 struct pf_ruleset ruleset; 926 int refcnt; /* anchor rules */ 927 int match; /* XXX: used for pfctl black magic */ 928 }; 929 RB_PROTOTYPE(pf_anchor_global, pf_anchor, entry_global, pf_anchor_compare); 930 RB_PROTOTYPE(pf_anchor_node, pf_anchor, entry_node, pf_anchor_compare); 931 932 #define PF_RESERVED_ANCHOR "_pf" 933 934 #define PFR_TFLAG_PERSIST 0x00000001 935 #define PFR_TFLAG_CONST 0x00000002 936 #define PFR_TFLAG_ACTIVE 0x00000004 937 #define PFR_TFLAG_INACTIVE 0x00000008 938 #define PFR_TFLAG_REFERENCED 0x00000010 939 #define PFR_TFLAG_REFDANCHOR 0x00000020 940 #define PFR_TFLAG_COUNTERS 0x00000040 941 /* Adjust masks below when adding flags. */ 942 #define PFR_TFLAG_USRMASK (PFR_TFLAG_PERSIST | \ 943 PFR_TFLAG_CONST | \ 944 PFR_TFLAG_COUNTERS) 945 #define PFR_TFLAG_SETMASK (PFR_TFLAG_ACTIVE | \ 946 PFR_TFLAG_INACTIVE | \ 947 PFR_TFLAG_REFERENCED | \ 948 PFR_TFLAG_REFDANCHOR) 949 #define PFR_TFLAG_ALLMASK (PFR_TFLAG_PERSIST | \ 950 PFR_TFLAG_CONST | \ 951 PFR_TFLAG_ACTIVE | \ 952 PFR_TFLAG_INACTIVE | \ 953 PFR_TFLAG_REFERENCED | \ 954 PFR_TFLAG_REFDANCHOR | \ 955 PFR_TFLAG_COUNTERS) 956 957 struct pf_anchor_stackframe; 958 959 struct pfr_table { 960 char pfrt_anchor[MAXPATHLEN]; 961 char pfrt_name[PF_TABLE_NAME_SIZE]; 962 u_int32_t pfrt_flags; 963 u_int8_t pfrt_fback; 964 }; 965 966 enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED, 967 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE, 968 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_NOCOUNT, PFR_FB_MAX }; 969 970 struct pfr_addr { 971 union { 972 struct in_addr _pfra_ip4addr; 973 struct in6_addr _pfra_ip6addr; 974 } pfra_u; 975 u_int8_t pfra_af; 976 u_int8_t pfra_net; 977 u_int8_t pfra_not; 978 u_int8_t pfra_fback; 979 }; 980 #define pfra_ip4addr pfra_u._pfra_ip4addr 981 #define pfra_ip6addr pfra_u._pfra_ip6addr 982 983 enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX }; 984 enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX }; 985 #define PFR_OP_XPASS PFR_OP_ADDR_MAX 986 987 struct pfr_astats { 988 struct pfr_addr pfras_a; 989 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 990 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 991 long pfras_tzero; 992 }; 993 994 enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX }; 995 996 struct pfr_tstats { 997 struct pfr_table pfrts_t; 998 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 999 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1000 u_int64_t pfrts_match; 1001 u_int64_t pfrts_nomatch; 1002 long pfrts_tzero; 1003 int pfrts_cnt; 1004 int pfrts_refcnt[PFR_REFCNT_MAX]; 1005 }; 1006 #define pfrts_name pfrts_t.pfrt_name 1007 #define pfrts_flags pfrts_t.pfrt_flags 1008 1009 #ifndef _SOCKADDR_UNION_DEFINED 1010 #define _SOCKADDR_UNION_DEFINED 1011 union sockaddr_union { 1012 struct sockaddr sa; 1013 struct sockaddr_in sin; 1014 struct sockaddr_in6 sin6; 1015 }; 1016 #endif /* _SOCKADDR_UNION_DEFINED */ 1017 1018 struct pfr_kcounters { 1019 u_int64_t pfrkc_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1020 u_int64_t pfrkc_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1021 }; 1022 1023 SLIST_HEAD(pfr_kentryworkq, pfr_kentry); 1024 struct pfr_kentry { 1025 struct radix_node pfrke_node[2]; 1026 union sockaddr_union pfrke_sa; 1027 SLIST_ENTRY(pfr_kentry) pfrke_workq; 1028 struct pfr_kcounters *pfrke_counters; 1029 long pfrke_tzero; 1030 u_int8_t pfrke_af; 1031 u_int8_t pfrke_net; 1032 u_int8_t pfrke_not; 1033 u_int8_t pfrke_mark; 1034 }; 1035 1036 SLIST_HEAD(pfr_ktableworkq, pfr_ktable); 1037 RB_HEAD(pfr_ktablehead, pfr_ktable); 1038 struct pfr_ktable { 1039 struct pfr_tstats pfrkt_ts; 1040 RB_ENTRY(pfr_ktable) pfrkt_tree; 1041 SLIST_ENTRY(pfr_ktable) pfrkt_workq; 1042 struct radix_node_head *pfrkt_ip4; 1043 struct radix_node_head *pfrkt_ip6; 1044 struct pfr_ktable *pfrkt_shadow; 1045 struct pfr_ktable *pfrkt_root; 1046 struct pf_ruleset *pfrkt_rs; 1047 long pfrkt_larg; 1048 int pfrkt_nflags; 1049 }; 1050 #define pfrkt_t pfrkt_ts.pfrts_t 1051 #define pfrkt_name pfrkt_t.pfrt_name 1052 #define pfrkt_anchor pfrkt_t.pfrt_anchor 1053 #define pfrkt_ruleset pfrkt_t.pfrt_ruleset 1054 #define pfrkt_flags pfrkt_t.pfrt_flags 1055 #define pfrkt_cnt pfrkt_ts.pfrts_cnt 1056 #define pfrkt_refcnt pfrkt_ts.pfrts_refcnt 1057 #define pfrkt_packets pfrkt_ts.pfrts_packets 1058 #define pfrkt_bytes pfrkt_ts.pfrts_bytes 1059 #define pfrkt_match pfrkt_ts.pfrts_match 1060 #define pfrkt_nomatch pfrkt_ts.pfrts_nomatch 1061 #define pfrkt_tzero pfrkt_ts.pfrts_tzero 1062 1063 /* keep synced with pfi_kif, used in RB_FIND */ 1064 struct pfi_kif_cmp { 1065 char pfik_name[IFNAMSIZ]; 1066 }; 1067 1068 struct pfi_kif { 1069 char pfik_name[IFNAMSIZ]; 1070 union { 1071 RB_ENTRY(pfi_kif) _pfik_tree; 1072 LIST_ENTRY(pfi_kif) _pfik_list; 1073 } _pfik_glue; 1074 #define pfik_tree _pfik_glue._pfik_tree 1075 #define pfik_list _pfik_glue._pfik_list 1076 u_int64_t pfik_packets[2][2][2]; 1077 u_int64_t pfik_bytes[2][2][2]; 1078 u_int32_t pfik_tzero; 1079 u_int pfik_flags; 1080 struct ifnet *pfik_ifp; 1081 struct ifg_group *pfik_group; 1082 u_int pfik_rulerefs; 1083 TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs; 1084 }; 1085 1086 #define PFI_IFLAG_REFS 0x0001 /* has state references */ 1087 #define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */ 1088 1089 struct pf_pdesc { 1090 struct { 1091 int done; 1092 uid_t uid; 1093 gid_t gid; 1094 } lookup; 1095 u_int64_t tot_len; /* Make Mickey money */ 1096 union { 1097 struct tcphdr *tcp; 1098 struct udphdr *udp; 1099 struct icmp *icmp; 1100 #ifdef INET6 1101 struct icmp6_hdr *icmp6; 1102 #endif /* INET6 */ 1103 void *any; 1104 } hdr; 1105 1106 struct pf_rule *nat_rule; /* nat/rdr rule applied to packet */ 1107 struct pf_addr *src; /* src address */ 1108 struct pf_addr *dst; /* dst address */ 1109 u_int16_t *sport; 1110 u_int16_t *dport; 1111 struct pf_mtag *pf_mtag; 1112 1113 u_int32_t p_len; /* total length of payload */ 1114 1115 u_int16_t *ip_sum; 1116 u_int16_t *proto_sum; 1117 u_int16_t flags; /* Let SCRUB trigger behavior in 1118 * state code. Easier than tags */ 1119 #define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */ 1120 #define PFDESC_IP_REAS 0x0002 /* IP frags would've been reassembled */ 1121 sa_family_t af; 1122 u_int8_t proto; 1123 u_int8_t tos; 1124 u_int8_t dir; /* direction */ 1125 u_int8_t sidx; /* key index for source */ 1126 u_int8_t didx; /* key index for destination */ 1127 }; 1128 1129 /* flags for RDR options */ 1130 #define PF_DPORT_RANGE 0x01 /* Dest port uses range */ 1131 #define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */ 1132 1133 /* UDP state enumeration */ 1134 #define PFUDPS_NO_TRAFFIC 0 1135 #define PFUDPS_SINGLE 1 1136 #define PFUDPS_MULTIPLE 2 1137 1138 #define PFUDPS_NSTATES 3 /* number of state levels */ 1139 1140 #define PFUDPS_NAMES { \ 1141 "NO_TRAFFIC", \ 1142 "SINGLE", \ 1143 "MULTIPLE", \ 1144 NULL \ 1145 } 1146 1147 /* Other protocol state enumeration */ 1148 #define PFOTHERS_NO_TRAFFIC 0 1149 #define PFOTHERS_SINGLE 1 1150 #define PFOTHERS_MULTIPLE 2 1151 1152 #define PFOTHERS_NSTATES 3 /* number of state levels */ 1153 1154 #define PFOTHERS_NAMES { \ 1155 "NO_TRAFFIC", \ 1156 "SINGLE", \ 1157 "MULTIPLE", \ 1158 NULL \ 1159 } 1160 1161 #define ACTION_SET(a, x) \ 1162 do { \ 1163 if ((a) != NULL) \ 1164 *(a) = (x); \ 1165 } while (0) 1166 1167 #define REASON_SET(a, x) \ 1168 do { \ 1169 if ((a) != NULL) \ 1170 *(a) = (x); \ 1171 if (x < PFRES_MAX) \ 1172 counter_u64_add(V_pf_status.counters[x], 1); \ 1173 } while (0) 1174 1175 struct pf_kstatus { 1176 counter_u64_t counters[PFRES_MAX]; /* reason for passing/dropping */ 1177 counter_u64_t lcounters[LCNT_MAX]; /* limit counters */ 1178 counter_u64_t fcounters[FCNT_MAX]; /* state operation counters */ 1179 counter_u64_t scounters[SCNT_MAX]; /* src_node operation counters */ 1180 uint32_t states; 1181 uint32_t src_nodes; 1182 uint32_t running; 1183 uint32_t since; 1184 uint32_t debug; 1185 uint32_t hostid; 1186 char ifname[IFNAMSIZ]; 1187 uint8_t pf_chksum[PF_MD5_DIGEST_LENGTH]; 1188 }; 1189 1190 struct pf_divert { 1191 union { 1192 struct in_addr ipv4; 1193 struct in6_addr ipv6; 1194 } addr; 1195 u_int16_t port; 1196 }; 1197 1198 #define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */ 1199 #define PFR_KENTRY_HIWAT 200000 /* Number of table entries */ 1200 1201 /* 1202 * ioctl parameter structures 1203 */ 1204 1205 struct pfioc_pooladdr { 1206 u_int32_t action; 1207 u_int32_t ticket; 1208 u_int32_t nr; 1209 u_int32_t r_num; 1210 u_int8_t r_action; 1211 u_int8_t r_last; 1212 u_int8_t af; 1213 char anchor[MAXPATHLEN]; 1214 struct pf_pooladdr addr; 1215 }; 1216 1217 struct pfioc_rule { 1218 u_int32_t action; 1219 u_int32_t ticket; 1220 u_int32_t pool_ticket; 1221 u_int32_t nr; 1222 char anchor[MAXPATHLEN]; 1223 char anchor_call[MAXPATHLEN]; 1224 struct pf_rule rule; 1225 }; 1226 1227 struct pfioc_natlook { 1228 struct pf_addr saddr; 1229 struct pf_addr daddr; 1230 struct pf_addr rsaddr; 1231 struct pf_addr rdaddr; 1232 u_int16_t sport; 1233 u_int16_t dport; 1234 u_int16_t rsport; 1235 u_int16_t rdport; 1236 sa_family_t af; 1237 u_int8_t proto; 1238 u_int8_t direction; 1239 }; 1240 1241 struct pfioc_state { 1242 struct pfsync_state state; 1243 }; 1244 1245 struct pfioc_src_node_kill { 1246 sa_family_t psnk_af; 1247 struct pf_rule_addr psnk_src; 1248 struct pf_rule_addr psnk_dst; 1249 u_int psnk_killed; 1250 }; 1251 1252 struct pfioc_state_kill { 1253 struct pf_state_cmp psk_pfcmp; 1254 sa_family_t psk_af; 1255 int psk_proto; 1256 struct pf_rule_addr psk_src; 1257 struct pf_rule_addr psk_dst; 1258 char psk_ifname[IFNAMSIZ]; 1259 char psk_label[PF_RULE_LABEL_SIZE]; 1260 u_int psk_killed; 1261 }; 1262 1263 struct pfioc_states { 1264 int ps_len; 1265 union { 1266 caddr_t psu_buf; 1267 struct pfsync_state *psu_states; 1268 } ps_u; 1269 #define ps_buf ps_u.psu_buf 1270 #define ps_states ps_u.psu_states 1271 }; 1272 1273 struct pfioc_src_nodes { 1274 int psn_len; 1275 union { 1276 caddr_t psu_buf; 1277 struct pf_src_node *psu_src_nodes; 1278 } psn_u; 1279 #define psn_buf psn_u.psu_buf 1280 #define psn_src_nodes psn_u.psu_src_nodes 1281 }; 1282 1283 struct pfioc_if { 1284 char ifname[IFNAMSIZ]; 1285 }; 1286 1287 struct pfioc_tm { 1288 int timeout; 1289 int seconds; 1290 }; 1291 1292 struct pfioc_limit { 1293 int index; 1294 unsigned limit; 1295 }; 1296 1297 struct pfioc_altq { 1298 u_int32_t action; 1299 u_int32_t ticket; 1300 u_int32_t nr; 1301 struct pf_altq altq; 1302 }; 1303 1304 struct pfioc_qstats { 1305 u_int32_t ticket; 1306 u_int32_t nr; 1307 void *buf; 1308 int nbytes; 1309 u_int8_t scheduler; 1310 }; 1311 1312 struct pfioc_ruleset { 1313 u_int32_t nr; 1314 char path[MAXPATHLEN]; 1315 char name[PF_ANCHOR_NAME_SIZE]; 1316 }; 1317 1318 #define PF_RULESET_ALTQ (PF_RULESET_MAX) 1319 #define PF_RULESET_TABLE (PF_RULESET_MAX+1) 1320 struct pfioc_trans { 1321 int size; /* number of elements */ 1322 int esize; /* size of each element in bytes */ 1323 struct pfioc_trans_e { 1324 int rs_num; 1325 char anchor[MAXPATHLEN]; 1326 u_int32_t ticket; 1327 } *array; 1328 }; 1329 1330 #define PFR_FLAG_ATOMIC 0x00000001 /* unused */ 1331 #define PFR_FLAG_DUMMY 0x00000002 1332 #define PFR_FLAG_FEEDBACK 0x00000004 1333 #define PFR_FLAG_CLSTATS 0x00000008 1334 #define PFR_FLAG_ADDRSTOO 0x00000010 1335 #define PFR_FLAG_REPLACE 0x00000020 1336 #define PFR_FLAG_ALLRSETS 0x00000040 1337 #define PFR_FLAG_ALLMASK 0x0000007F 1338 #ifdef _KERNEL 1339 #define PFR_FLAG_USERIOCTL 0x10000000 1340 #endif 1341 1342 struct pfioc_table { 1343 struct pfr_table pfrio_table; 1344 void *pfrio_buffer; 1345 int pfrio_esize; 1346 int pfrio_size; 1347 int pfrio_size2; 1348 int pfrio_nadd; 1349 int pfrio_ndel; 1350 int pfrio_nchange; 1351 int pfrio_flags; 1352 u_int32_t pfrio_ticket; 1353 }; 1354 #define pfrio_exists pfrio_nadd 1355 #define pfrio_nzero pfrio_nadd 1356 #define pfrio_nmatch pfrio_nadd 1357 #define pfrio_naddr pfrio_size2 1358 #define pfrio_setflag pfrio_size2 1359 #define pfrio_clrflag pfrio_nadd 1360 1361 struct pfioc_iface { 1362 char pfiio_name[IFNAMSIZ]; 1363 void *pfiio_buffer; 1364 int pfiio_esize; 1365 int pfiio_size; 1366 int pfiio_nzero; 1367 int pfiio_flags; 1368 }; 1369 1370 1371 /* 1372 * ioctl operations 1373 */ 1374 1375 #define DIOCSTART _IO ('D', 1) 1376 #define DIOCSTOP _IO ('D', 2) 1377 #define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule) 1378 #define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule) 1379 #define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule) 1380 /* XXX cut 8 - 17 */ 1381 #define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill) 1382 #define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state) 1383 #define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if) 1384 #define DIOCGETSTATUS _IOWR('D', 21, struct pf_status) 1385 #define DIOCCLRSTATUS _IO ('D', 22) 1386 #define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook) 1387 #define DIOCSETDEBUG _IOWR('D', 24, u_int32_t) 1388 #define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states) 1389 #define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule) 1390 /* XXX cut 26 - 28 */ 1391 #define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm) 1392 #define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm) 1393 #define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state) 1394 #define DIOCCLRRULECTRS _IO ('D', 38) 1395 #define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit) 1396 #define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit) 1397 #define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill) 1398 #define DIOCSTARTALTQ _IO ('D', 42) 1399 #define DIOCSTOPALTQ _IO ('D', 43) 1400 #define DIOCADDALTQ _IOWR('D', 45, struct pfioc_altq) 1401 #define DIOCGETALTQS _IOWR('D', 47, struct pfioc_altq) 1402 #define DIOCGETALTQ _IOWR('D', 48, struct pfioc_altq) 1403 #define DIOCCHANGEALTQ _IOWR('D', 49, struct pfioc_altq) 1404 #define DIOCGETQSTATS _IOWR('D', 50, struct pfioc_qstats) 1405 #define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr) 1406 #define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr) 1407 #define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr) 1408 #define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr) 1409 #define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr) 1410 /* XXX cut 55 - 57 */ 1411 #define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset) 1412 #define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset) 1413 #define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table) 1414 #define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table) 1415 #define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table) 1416 #define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table) 1417 #define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table) 1418 #define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table) 1419 #define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table) 1420 #define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table) 1421 #define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table) 1422 #define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table) 1423 #define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table) 1424 #define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table) 1425 #define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table) 1426 #define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table) 1427 #define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table) 1428 #define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table) 1429 #define DIOCOSFPFLUSH _IO('D', 78) 1430 #define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl) 1431 #define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl) 1432 #define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans) 1433 #define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans) 1434 #define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans) 1435 #define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes) 1436 #define DIOCCLRSRCNODES _IO('D', 85) 1437 #define DIOCSETHOSTID _IOWR('D', 86, u_int32_t) 1438 #define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface) 1439 #define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface) 1440 #define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface) 1441 #define DIOCKILLSRCNODES _IOWR('D', 91, struct pfioc_src_node_kill) 1442 struct pf_ifspeed { 1443 char ifname[IFNAMSIZ]; 1444 u_int32_t baudrate; 1445 }; 1446 #define DIOCGIFSPEED _IOWR('D', 92, struct pf_ifspeed) 1447 1448 #ifdef _KERNEL 1449 LIST_HEAD(pf_src_node_list, pf_src_node); 1450 struct pf_srchash { 1451 struct pf_src_node_list nodes; 1452 struct mtx lock; 1453 }; 1454 1455 struct pf_keyhash { 1456 LIST_HEAD(, pf_state_key) keys; 1457 struct mtx lock; 1458 }; 1459 1460 struct pf_idhash { 1461 LIST_HEAD(, pf_state) states; 1462 struct mtx lock; 1463 }; 1464 1465 extern u_long pf_hashmask; 1466 extern u_long pf_srchashmask; 1467 #define PF_HASHSIZ (32768) 1468 VNET_DECLARE(struct pf_keyhash *, pf_keyhash); 1469 VNET_DECLARE(struct pf_idhash *, pf_idhash); 1470 #define V_pf_keyhash VNET(pf_keyhash) 1471 #define V_pf_idhash VNET(pf_idhash) 1472 VNET_DECLARE(struct pf_srchash *, pf_srchash); 1473 #define V_pf_srchash VNET(pf_srchash) 1474 1475 #define PF_IDHASH(s) (be64toh((s)->id) % (pf_hashmask + 1)) 1476 1477 VNET_DECLARE(void *, pf_swi_cookie); 1478 #define V_pf_swi_cookie VNET(pf_swi_cookie) 1479 1480 VNET_DECLARE(uint64_t, pf_stateid[MAXCPU]); 1481 #define V_pf_stateid VNET(pf_stateid) 1482 1483 TAILQ_HEAD(pf_altqqueue, pf_altq); 1484 VNET_DECLARE(struct pf_altqqueue, pf_altqs[2]); 1485 #define V_pf_altqs VNET(pf_altqs) 1486 VNET_DECLARE(struct pf_palist, pf_pabuf); 1487 #define V_pf_pabuf VNET(pf_pabuf) 1488 1489 VNET_DECLARE(u_int32_t, ticket_altqs_active); 1490 #define V_ticket_altqs_active VNET(ticket_altqs_active) 1491 VNET_DECLARE(u_int32_t, ticket_altqs_inactive); 1492 #define V_ticket_altqs_inactive VNET(ticket_altqs_inactive) 1493 VNET_DECLARE(int, altqs_inactive_open); 1494 #define V_altqs_inactive_open VNET(altqs_inactive_open) 1495 VNET_DECLARE(u_int32_t, ticket_pabuf); 1496 #define V_ticket_pabuf VNET(ticket_pabuf) 1497 VNET_DECLARE(struct pf_altqqueue *, pf_altqs_active); 1498 #define V_pf_altqs_active VNET(pf_altqs_active) 1499 VNET_DECLARE(struct pf_altqqueue *, pf_altqs_inactive); 1500 #define V_pf_altqs_inactive VNET(pf_altqs_inactive) 1501 1502 VNET_DECLARE(struct pf_rulequeue, pf_unlinked_rules); 1503 #define V_pf_unlinked_rules VNET(pf_unlinked_rules) 1504 1505 void pf_initialize(void); 1506 void pf_mtag_initialize(void); 1507 void pf_mtag_cleanup(void); 1508 void pf_cleanup(void); 1509 1510 struct pf_mtag *pf_get_mtag(struct mbuf *); 1511 1512 extern void pf_calc_skip_steps(struct pf_rulequeue *); 1513 #ifdef ALTQ 1514 extern void pf_altq_ifnet_event(struct ifnet *, int); 1515 #endif 1516 VNET_DECLARE(uma_zone_t, pf_state_z); 1517 #define V_pf_state_z VNET(pf_state_z) 1518 VNET_DECLARE(uma_zone_t, pf_state_key_z); 1519 #define V_pf_state_key_z VNET(pf_state_key_z) 1520 VNET_DECLARE(uma_zone_t, pf_state_scrub_z); 1521 #define V_pf_state_scrub_z VNET(pf_state_scrub_z) 1522 1523 extern void pf_purge_thread(void *); 1524 extern void pf_unload_vnet_purge(void); 1525 extern void pf_intr(void *); 1526 extern void pf_purge_expired_src_nodes(void); 1527 1528 extern int pf_unlink_state(struct pf_state *, u_int); 1529 #define PF_ENTER_LOCKED 0x00000001 1530 #define PF_RETURN_LOCKED 0x00000002 1531 extern int pf_state_insert(struct pfi_kif *, 1532 struct pf_state_key *, 1533 struct pf_state_key *, 1534 struct pf_state *); 1535 extern void pf_free_state(struct pf_state *); 1536 1537 static __inline void 1538 pf_ref_state(struct pf_state *s) 1539 { 1540 1541 refcount_acquire(&s->refs); 1542 } 1543 1544 static __inline int 1545 pf_release_state(struct pf_state *s) 1546 { 1547 1548 if (refcount_release(&s->refs)) { 1549 pf_free_state(s); 1550 return (1); 1551 } else 1552 return (0); 1553 } 1554 1555 extern struct pf_state *pf_find_state_byid(uint64_t, uint32_t); 1556 extern struct pf_state *pf_find_state_all(struct pf_state_key_cmp *, 1557 u_int, int *); 1558 extern struct pf_src_node *pf_find_src_node(struct pf_addr *, 1559 struct pf_rule *, sa_family_t, int); 1560 extern void pf_unlink_src_node(struct pf_src_node *); 1561 extern u_int pf_free_src_nodes(struct pf_src_node_list *); 1562 extern void pf_print_state(struct pf_state *); 1563 extern void pf_print_flags(u_int8_t); 1564 extern u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t, 1565 u_int8_t); 1566 extern u_int16_t pf_proto_cksum_fixup(struct mbuf *, u_int16_t, 1567 u_int16_t, u_int16_t, u_int8_t); 1568 1569 VNET_DECLARE(struct ifnet *, sync_ifp); 1570 #define V_sync_ifp VNET(sync_ifp); 1571 VNET_DECLARE(struct pf_rule, pf_default_rule); 1572 #define V_pf_default_rule VNET(pf_default_rule) 1573 extern void pf_addrcpy(struct pf_addr *, struct pf_addr *, 1574 u_int8_t); 1575 void pf_free_rule(struct pf_rule *); 1576 1577 #ifdef INET 1578 int pf_test(int, struct ifnet *, struct mbuf **, struct inpcb *); 1579 int pf_normalize_ip(struct mbuf **, int, struct pfi_kif *, u_short *, 1580 struct pf_pdesc *); 1581 #endif /* INET */ 1582 1583 #ifdef INET6 1584 int pf_test6(int, struct ifnet *, struct mbuf **, struct inpcb *); 1585 int pf_normalize_ip6(struct mbuf **, int, struct pfi_kif *, u_short *, 1586 struct pf_pdesc *); 1587 void pf_poolmask(struct pf_addr *, struct pf_addr*, 1588 struct pf_addr *, struct pf_addr *, u_int8_t); 1589 void pf_addr_inc(struct pf_addr *, sa_family_t); 1590 int pf_refragment6(struct ifnet *, struct mbuf **, struct m_tag *); 1591 #endif /* INET6 */ 1592 1593 u_int32_t pf_new_isn(struct pf_state *); 1594 void *pf_pull_hdr(struct mbuf *, int, void *, int, u_short *, u_short *, 1595 sa_family_t); 1596 void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t); 1597 void pf_change_proto_a(struct mbuf *, void *, u_int16_t *, u_int32_t, 1598 u_int8_t); 1599 void pf_change_tcp_a(struct mbuf *, void *, u_int16_t *, u_int32_t); 1600 void pf_send_deferred_syn(struct pf_state *); 1601 int pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *, 1602 struct pf_addr *, sa_family_t); 1603 int pf_match_addr_range(struct pf_addr *, struct pf_addr *, 1604 struct pf_addr *, sa_family_t); 1605 int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t); 1606 1607 void pf_normalize_init(void); 1608 void pf_normalize_cleanup(void); 1609 int pf_normalize_tcp(int, struct pfi_kif *, struct mbuf *, int, int, void *, 1610 struct pf_pdesc *); 1611 void pf_normalize_tcp_cleanup(struct pf_state *); 1612 int pf_normalize_tcp_init(struct mbuf *, int, struct pf_pdesc *, 1613 struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *); 1614 int pf_normalize_tcp_stateful(struct mbuf *, int, struct pf_pdesc *, 1615 u_short *, struct tcphdr *, struct pf_state *, 1616 struct pf_state_peer *, struct pf_state_peer *, int *); 1617 u_int32_t 1618 pf_state_expires(const struct pf_state *); 1619 void pf_purge_expired_fragments(void); 1620 int pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kif *, 1621 int); 1622 int pf_socket_lookup(int, struct pf_pdesc *, struct mbuf *); 1623 struct pf_state_key *pf_alloc_state_key(int); 1624 void pfr_initialize(void); 1625 void pfr_cleanup(void); 1626 int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t); 1627 void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t, 1628 u_int64_t, int, int, int); 1629 int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, sa_family_t); 1630 void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *); 1631 struct pfr_ktable * 1632 pfr_attach_table(struct pf_ruleset *, char *); 1633 void pfr_detach_table(struct pfr_ktable *); 1634 int pfr_clr_tables(struct pfr_table *, int *, int); 1635 int pfr_add_tables(struct pfr_table *, int, int *, int); 1636 int pfr_del_tables(struct pfr_table *, int, int *, int); 1637 int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int); 1638 int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int); 1639 int pfr_clr_tstats(struct pfr_table *, int, int *, int); 1640 int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int); 1641 int pfr_clr_addrs(struct pfr_table *, int *, int); 1642 int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *, long); 1643 int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1644 int); 1645 int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1646 int); 1647 int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1648 int *, int *, int *, int, u_int32_t); 1649 int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int); 1650 int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int); 1651 int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *, 1652 int); 1653 int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1654 int); 1655 int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int); 1656 int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int); 1657 int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int); 1658 int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *, 1659 int *, u_int32_t, int); 1660 1661 MALLOC_DECLARE(PFI_MTYPE); 1662 VNET_DECLARE(struct pfi_kif *, pfi_all); 1663 #define V_pfi_all VNET(pfi_all) 1664 1665 void pfi_initialize(void); 1666 void pfi_initialize_vnet(void); 1667 void pfi_cleanup(void); 1668 void pfi_cleanup_vnet(void); 1669 void pfi_kif_ref(struct pfi_kif *); 1670 void pfi_kif_unref(struct pfi_kif *); 1671 struct pfi_kif *pfi_kif_find(const char *); 1672 struct pfi_kif *pfi_kif_attach(struct pfi_kif *, const char *); 1673 int pfi_kif_match(struct pfi_kif *, struct pfi_kif *); 1674 void pfi_kif_purge(void); 1675 int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *, 1676 sa_family_t); 1677 int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t); 1678 void pfi_dynaddr_remove(struct pfi_dynaddr *); 1679 void pfi_dynaddr_copyout(struct pf_addr_wrap *); 1680 void pfi_update_status(const char *, struct pf_status *); 1681 void pfi_get_ifaces(const char *, struct pfi_kif *, int *); 1682 int pfi_set_flags(const char *, int); 1683 int pfi_clear_flags(const char *, int); 1684 1685 int pf_match_tag(struct mbuf *, struct pf_rule *, int *, int); 1686 int pf_tag_packet(struct mbuf *, struct pf_pdesc *, int); 1687 int pf_addr_cmp(struct pf_addr *, struct pf_addr *, 1688 sa_family_t); 1689 void pf_qid2qname(u_int32_t, char *); 1690 1691 VNET_DECLARE(struct pf_kstatus, pf_status); 1692 #define V_pf_status VNET(pf_status) 1693 1694 struct pf_limit { 1695 uma_zone_t zone; 1696 u_int limit; 1697 }; 1698 VNET_DECLARE(struct pf_limit, pf_limits[PF_LIMIT_MAX]); 1699 #define V_pf_limits VNET(pf_limits) 1700 1701 #endif /* _KERNEL */ 1702 1703 #ifdef _KERNEL 1704 VNET_DECLARE(struct pf_anchor_global, pf_anchors); 1705 #define V_pf_anchors VNET(pf_anchors) 1706 VNET_DECLARE(struct pf_anchor, pf_main_anchor); 1707 #define V_pf_main_anchor VNET(pf_main_anchor) 1708 #define pf_main_ruleset V_pf_main_anchor.ruleset 1709 #endif 1710 1711 /* these ruleset functions can be linked into userland programs (pfctl) */ 1712 int pf_get_ruleset_number(u_int8_t); 1713 void pf_init_ruleset(struct pf_ruleset *); 1714 int pf_anchor_setup(struct pf_rule *, 1715 const struct pf_ruleset *, const char *); 1716 int pf_anchor_copyout(const struct pf_ruleset *, 1717 const struct pf_rule *, struct pfioc_rule *); 1718 void pf_anchor_remove(struct pf_rule *); 1719 void pf_remove_if_empty_ruleset(struct pf_ruleset *); 1720 struct pf_ruleset *pf_find_ruleset(const char *); 1721 struct pf_ruleset *pf_find_or_create_ruleset(const char *); 1722 void pf_rs_initialize(void); 1723 1724 /* The fingerprint functions can be linked into userland programs (tcpdump) */ 1725 int pf_osfp_add(struct pf_osfp_ioctl *); 1726 #ifdef _KERNEL 1727 struct pf_osfp_enlist * 1728 pf_osfp_fingerprint(struct pf_pdesc *, struct mbuf *, int, 1729 const struct tcphdr *); 1730 #endif /* _KERNEL */ 1731 void pf_osfp_flush(void); 1732 int pf_osfp_get(struct pf_osfp_ioctl *); 1733 int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t); 1734 1735 #ifdef _KERNEL 1736 void pf_print_host(struct pf_addr *, u_int16_t, u_int8_t); 1737 1738 void pf_step_into_anchor(struct pf_anchor_stackframe *, int *, 1739 struct pf_ruleset **, int, struct pf_rule **, 1740 struct pf_rule **, int *); 1741 int pf_step_out_of_anchor(struct pf_anchor_stackframe *, int *, 1742 struct pf_ruleset **, int, struct pf_rule **, 1743 struct pf_rule **, int *); 1744 1745 int pf_map_addr(u_int8_t, struct pf_rule *, 1746 struct pf_addr *, struct pf_addr *, 1747 struct pf_addr *, struct pf_src_node **); 1748 struct pf_rule *pf_get_translation(struct pf_pdesc *, struct mbuf *, 1749 int, int, struct pfi_kif *, struct pf_src_node **, 1750 struct pf_state_key **, struct pf_state_key **, 1751 struct pf_addr *, struct pf_addr *, 1752 uint16_t, uint16_t, struct pf_anchor_stackframe *); 1753 1754 struct pf_state_key *pf_state_key_setup(struct pf_pdesc *, struct pf_addr *, 1755 struct pf_addr *, u_int16_t, u_int16_t); 1756 struct pf_state_key *pf_state_key_clone(struct pf_state_key *); 1757 #endif /* _KERNEL */ 1758 1759 #endif /* _NET_PFVAR_H_ */ 1760