1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2001 Daniel Hartmeier 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * - Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * - Redistributions in binary form must reproduce the above 14 * copyright notice, this list of conditions and the following 15 * disclaimer in the documentation and/or other materials provided 16 * with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 21 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 22 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 24 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 25 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 26 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 28 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 * 31 * $OpenBSD: pfvar.h,v 1.282 2009/01/29 15:12:28 pyr Exp $ 32 * $FreeBSD$ 33 */ 34 35 #ifndef _NET_PFVAR_H_ 36 #define _NET_PFVAR_H_ 37 38 #include <sys/param.h> 39 #include <sys/queue.h> 40 #include <sys/counter.h> 41 #include <sys/malloc.h> 42 #include <sys/refcount.h> 43 #include <sys/tree.h> 44 #include <vm/uma.h> 45 46 #include <net/radix.h> 47 #include <netinet/in.h> 48 49 #include <netpfil/pf/pf.h> 50 #include <netpfil/pf/pf_altq.h> 51 #include <netpfil/pf/pf_mtag.h> 52 53 struct pf_addr { 54 union { 55 struct in_addr v4; 56 struct in6_addr v6; 57 u_int8_t addr8[16]; 58 u_int16_t addr16[8]; 59 u_int32_t addr32[4]; 60 } pfa; /* 128-bit address */ 61 #define v4 pfa.v4 62 #define v6 pfa.v6 63 #define addr8 pfa.addr8 64 #define addr16 pfa.addr16 65 #define addr32 pfa.addr32 66 }; 67 68 #define PFI_AFLAG_NETWORK 0x01 69 #define PFI_AFLAG_BROADCAST 0x02 70 #define PFI_AFLAG_PEER 0x04 71 #define PFI_AFLAG_MODEMASK 0x07 72 #define PFI_AFLAG_NOALIAS 0x08 73 74 struct pf_addr_wrap { 75 union { 76 struct { 77 struct pf_addr addr; 78 struct pf_addr mask; 79 } a; 80 char ifname[IFNAMSIZ]; 81 char tblname[PF_TABLE_NAME_SIZE]; 82 } v; 83 union { 84 struct pfi_dynaddr *dyn; 85 struct pfr_ktable *tbl; 86 int dyncnt; 87 int tblcnt; 88 } p; 89 u_int8_t type; /* PF_ADDR_* */ 90 u_int8_t iflags; /* PFI_AFLAG_* */ 91 }; 92 93 #ifdef _KERNEL 94 95 struct pfi_dynaddr { 96 TAILQ_ENTRY(pfi_dynaddr) entry; 97 struct pf_addr pfid_addr4; 98 struct pf_addr pfid_mask4; 99 struct pf_addr pfid_addr6; 100 struct pf_addr pfid_mask6; 101 struct pfr_ktable *pfid_kt; 102 struct pfi_kif *pfid_kif; 103 int pfid_net; /* mask or 128 */ 104 int pfid_acnt4; /* address count IPv4 */ 105 int pfid_acnt6; /* address count IPv6 */ 106 sa_family_t pfid_af; /* rule af */ 107 u_int8_t pfid_iflags; /* PFI_AFLAG_* */ 108 }; 109 110 /* 111 * Address manipulation macros 112 */ 113 #define HTONL(x) (x) = htonl((__uint32_t)(x)) 114 #define HTONS(x) (x) = htons((__uint16_t)(x)) 115 #define NTOHL(x) (x) = ntohl((__uint32_t)(x)) 116 #define NTOHS(x) (x) = ntohs((__uint16_t)(x)) 117 118 #define PF_NAME "pf" 119 120 #define PF_HASHROW_ASSERT(h) mtx_assert(&(h)->lock, MA_OWNED) 121 #define PF_HASHROW_LOCK(h) mtx_lock(&(h)->lock) 122 #define PF_HASHROW_UNLOCK(h) mtx_unlock(&(h)->lock) 123 124 #define PF_STATE_LOCK(s) \ 125 do { \ 126 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(s)]; \ 127 PF_HASHROW_LOCK(_ih); \ 128 } while (0) 129 130 #define PF_STATE_UNLOCK(s) \ 131 do { \ 132 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH((s))]; \ 133 PF_HASHROW_UNLOCK(_ih); \ 134 } while (0) 135 136 #ifdef INVARIANTS 137 #define PF_STATE_LOCK_ASSERT(s) \ 138 do { \ 139 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(s)]; \ 140 PF_HASHROW_ASSERT(_ih); \ 141 } while (0) 142 #else /* !INVARIANTS */ 143 #define PF_STATE_LOCK_ASSERT(s) do {} while (0) 144 #endif /* INVARIANTS */ 145 146 extern struct mtx pf_unlnkdrules_mtx; 147 #define PF_UNLNKDRULES_LOCK() mtx_lock(&pf_unlnkdrules_mtx) 148 #define PF_UNLNKDRULES_UNLOCK() mtx_unlock(&pf_unlnkdrules_mtx) 149 150 extern struct rwlock pf_rules_lock; 151 #define PF_RULES_RLOCK() rw_rlock(&pf_rules_lock) 152 #define PF_RULES_RUNLOCK() rw_runlock(&pf_rules_lock) 153 #define PF_RULES_WLOCK() rw_wlock(&pf_rules_lock) 154 #define PF_RULES_WUNLOCK() rw_wunlock(&pf_rules_lock) 155 #define PF_RULES_ASSERT() rw_assert(&pf_rules_lock, RA_LOCKED) 156 #define PF_RULES_RASSERT() rw_assert(&pf_rules_lock, RA_RLOCKED) 157 #define PF_RULES_WASSERT() rw_assert(&pf_rules_lock, RA_WLOCKED) 158 159 extern struct sx pf_end_lock; 160 161 #define PF_MODVER 1 162 #define PFLOG_MODVER 1 163 #define PFSYNC_MODVER 1 164 165 #define PFLOG_MINVER 1 166 #define PFLOG_PREFVER PFLOG_MODVER 167 #define PFLOG_MAXVER 1 168 #define PFSYNC_MINVER 1 169 #define PFSYNC_PREFVER PFSYNC_MODVER 170 #define PFSYNC_MAXVER 1 171 172 #ifdef INET 173 #ifndef INET6 174 #define PF_INET_ONLY 175 #endif /* ! INET6 */ 176 #endif /* INET */ 177 178 #ifdef INET6 179 #ifndef INET 180 #define PF_INET6_ONLY 181 #endif /* ! INET */ 182 #endif /* INET6 */ 183 184 #ifdef INET 185 #ifdef INET6 186 #define PF_INET_INET6 187 #endif /* INET6 */ 188 #endif /* INET */ 189 190 #else 191 192 #define PF_INET_INET6 193 194 #endif /* _KERNEL */ 195 196 /* Both IPv4 and IPv6 */ 197 #ifdef PF_INET_INET6 198 199 #define PF_AEQ(a, b, c) \ 200 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \ 201 (c == AF_INET6 && (a)->addr32[3] == (b)->addr32[3] && \ 202 (a)->addr32[2] == (b)->addr32[2] && \ 203 (a)->addr32[1] == (b)->addr32[1] && \ 204 (a)->addr32[0] == (b)->addr32[0])) \ 205 206 #define PF_ANEQ(a, b, c) \ 207 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \ 208 (c == AF_INET6 && ((a)->addr32[0] != (b)->addr32[0] || \ 209 (a)->addr32[1] != (b)->addr32[1] || \ 210 (a)->addr32[2] != (b)->addr32[2] || \ 211 (a)->addr32[3] != (b)->addr32[3]))) \ 212 213 #define PF_AZERO(a, c) \ 214 ((c == AF_INET && !(a)->addr32[0]) || \ 215 (c == AF_INET6 && !(a)->addr32[0] && !(a)->addr32[1] && \ 216 !(a)->addr32[2] && !(a)->addr32[3] )) \ 217 218 #define PF_MATCHA(n, a, m, b, f) \ 219 pf_match_addr(n, a, m, b, f) 220 221 #define PF_ACPY(a, b, f) \ 222 pf_addrcpy(a, b, f) 223 224 #define PF_AINC(a, f) \ 225 pf_addr_inc(a, f) 226 227 #define PF_POOLMASK(a, b, c, d, f) \ 228 pf_poolmask(a, b, c, d, f) 229 230 #else 231 232 /* Just IPv6 */ 233 234 #ifdef PF_INET6_ONLY 235 236 #define PF_AEQ(a, b, c) \ 237 ((a)->addr32[3] == (b)->addr32[3] && \ 238 (a)->addr32[2] == (b)->addr32[2] && \ 239 (a)->addr32[1] == (b)->addr32[1] && \ 240 (a)->addr32[0] == (b)->addr32[0]) \ 241 242 #define PF_ANEQ(a, b, c) \ 243 ((a)->addr32[3] != (b)->addr32[3] || \ 244 (a)->addr32[2] != (b)->addr32[2] || \ 245 (a)->addr32[1] != (b)->addr32[1] || \ 246 (a)->addr32[0] != (b)->addr32[0]) \ 247 248 #define PF_AZERO(a, c) \ 249 (!(a)->addr32[0] && \ 250 !(a)->addr32[1] && \ 251 !(a)->addr32[2] && \ 252 !(a)->addr32[3] ) \ 253 254 #define PF_MATCHA(n, a, m, b, f) \ 255 pf_match_addr(n, a, m, b, f) 256 257 #define PF_ACPY(a, b, f) \ 258 pf_addrcpy(a, b, f) 259 260 #define PF_AINC(a, f) \ 261 pf_addr_inc(a, f) 262 263 #define PF_POOLMASK(a, b, c, d, f) \ 264 pf_poolmask(a, b, c, d, f) 265 266 #else 267 268 /* Just IPv4 */ 269 #ifdef PF_INET_ONLY 270 271 #define PF_AEQ(a, b, c) \ 272 ((a)->addr32[0] == (b)->addr32[0]) 273 274 #define PF_ANEQ(a, b, c) \ 275 ((a)->addr32[0] != (b)->addr32[0]) 276 277 #define PF_AZERO(a, c) \ 278 (!(a)->addr32[0]) 279 280 #define PF_MATCHA(n, a, m, b, f) \ 281 pf_match_addr(n, a, m, b, f) 282 283 #define PF_ACPY(a, b, f) \ 284 (a)->v4.s_addr = (b)->v4.s_addr 285 286 #define PF_AINC(a, f) \ 287 do { \ 288 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \ 289 } while (0) 290 291 #define PF_POOLMASK(a, b, c, d, f) \ 292 do { \ 293 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \ 294 (((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \ 295 } while (0) 296 297 #endif /* PF_INET_ONLY */ 298 #endif /* PF_INET6_ONLY */ 299 #endif /* PF_INET_INET6 */ 300 301 /* 302 * XXX callers not FIB-aware in our version of pf yet. 303 * OpenBSD fixed it later it seems, 2010/05/07 13:33:16 claudio. 304 */ 305 #define PF_MISMATCHAW(aw, x, af, neg, ifp, rtid) \ 306 ( \ 307 (((aw)->type == PF_ADDR_NOROUTE && \ 308 pf_routable((x), (af), NULL, (rtid))) || \ 309 (((aw)->type == PF_ADDR_URPFFAILED && (ifp) != NULL && \ 310 pf_routable((x), (af), (ifp), (rtid))) || \ 311 ((aw)->type == PF_ADDR_TABLE && \ 312 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \ 313 ((aw)->type == PF_ADDR_DYNIFTL && \ 314 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \ 315 ((aw)->type == PF_ADDR_RANGE && \ 316 !pf_match_addr_range(&(aw)->v.a.addr, \ 317 &(aw)->v.a.mask, (x), (af))) || \ 318 ((aw)->type == PF_ADDR_ADDRMASK && \ 319 !PF_AZERO(&(aw)->v.a.mask, (af)) && \ 320 !PF_MATCHA(0, &(aw)->v.a.addr, \ 321 &(aw)->v.a.mask, (x), (af))))) != \ 322 (neg) \ 323 ) 324 325 326 struct pf_rule_uid { 327 uid_t uid[2]; 328 u_int8_t op; 329 }; 330 331 struct pf_rule_gid { 332 uid_t gid[2]; 333 u_int8_t op; 334 }; 335 336 struct pf_rule_addr { 337 struct pf_addr_wrap addr; 338 u_int16_t port[2]; 339 u_int8_t neg; 340 u_int8_t port_op; 341 }; 342 343 struct pf_pooladdr { 344 struct pf_addr_wrap addr; 345 TAILQ_ENTRY(pf_pooladdr) entries; 346 char ifname[IFNAMSIZ]; 347 struct pfi_kif *kif; 348 }; 349 350 TAILQ_HEAD(pf_palist, pf_pooladdr); 351 352 struct pf_poolhashkey { 353 union { 354 u_int8_t key8[16]; 355 u_int16_t key16[8]; 356 u_int32_t key32[4]; 357 } pfk; /* 128-bit hash key */ 358 #define key8 pfk.key8 359 #define key16 pfk.key16 360 #define key32 pfk.key32 361 }; 362 363 struct pf_pool { 364 struct pf_palist list; 365 struct pf_pooladdr *cur; 366 struct pf_poolhashkey key; 367 struct pf_addr counter; 368 int tblidx; 369 u_int16_t proxy_port[2]; 370 u_int8_t opts; 371 }; 372 373 374 /* A packed Operating System description for fingerprinting */ 375 typedef u_int32_t pf_osfp_t; 376 #define PF_OSFP_ANY ((pf_osfp_t)0) 377 #define PF_OSFP_UNKNOWN ((pf_osfp_t)-1) 378 #define PF_OSFP_NOMATCH ((pf_osfp_t)-2) 379 380 struct pf_osfp_entry { 381 SLIST_ENTRY(pf_osfp_entry) fp_entry; 382 pf_osfp_t fp_os; 383 int fp_enflags; 384 #define PF_OSFP_EXPANDED 0x001 /* expanded entry */ 385 #define PF_OSFP_GENERIC 0x002 /* generic signature */ 386 #define PF_OSFP_NODETAIL 0x004 /* no p0f details */ 387 #define PF_OSFP_LEN 32 388 char fp_class_nm[PF_OSFP_LEN]; 389 char fp_version_nm[PF_OSFP_LEN]; 390 char fp_subtype_nm[PF_OSFP_LEN]; 391 }; 392 #define PF_OSFP_ENTRY_EQ(a, b) \ 393 ((a)->fp_os == (b)->fp_os && \ 394 memcmp((a)->fp_class_nm, (b)->fp_class_nm, PF_OSFP_LEN) == 0 && \ 395 memcmp((a)->fp_version_nm, (b)->fp_version_nm, PF_OSFP_LEN) == 0 && \ 396 memcmp((a)->fp_subtype_nm, (b)->fp_subtype_nm, PF_OSFP_LEN) == 0) 397 398 /* handle pf_osfp_t packing */ 399 #define _FP_RESERVED_BIT 1 /* For the special negative #defines */ 400 #define _FP_UNUSED_BITS 1 401 #define _FP_CLASS_BITS 10 /* OS Class (Windows, Linux) */ 402 #define _FP_VERSION_BITS 10 /* OS version (95, 98, NT, 2.4.54, 3.2) */ 403 #define _FP_SUBTYPE_BITS 10 /* patch level (NT SP4, SP3, ECN patch) */ 404 #define PF_OSFP_UNPACK(osfp, class, version, subtype) do { \ 405 (class) = ((osfp) >> (_FP_VERSION_BITS+_FP_SUBTYPE_BITS)) & \ 406 ((1 << _FP_CLASS_BITS) - 1); \ 407 (version) = ((osfp) >> _FP_SUBTYPE_BITS) & \ 408 ((1 << _FP_VERSION_BITS) - 1);\ 409 (subtype) = (osfp) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 410 } while(0) 411 #define PF_OSFP_PACK(osfp, class, version, subtype) do { \ 412 (osfp) = ((class) & ((1 << _FP_CLASS_BITS) - 1)) << (_FP_VERSION_BITS \ 413 + _FP_SUBTYPE_BITS); \ 414 (osfp) |= ((version) & ((1 << _FP_VERSION_BITS) - 1)) << \ 415 _FP_SUBTYPE_BITS; \ 416 (osfp) |= (subtype) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 417 } while(0) 418 419 /* the fingerprint of an OSes TCP SYN packet */ 420 typedef u_int64_t pf_tcpopts_t; 421 struct pf_os_fingerprint { 422 SLIST_HEAD(pf_osfp_enlist, pf_osfp_entry) fp_oses; /* list of matches */ 423 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 424 u_int16_t fp_wsize; /* TCP window size */ 425 u_int16_t fp_psize; /* ip->ip_len */ 426 u_int16_t fp_mss; /* TCP MSS */ 427 u_int16_t fp_flags; 428 #define PF_OSFP_WSIZE_MOD 0x0001 /* Window modulus */ 429 #define PF_OSFP_WSIZE_DC 0x0002 /* Window don't care */ 430 #define PF_OSFP_WSIZE_MSS 0x0004 /* Window multiple of MSS */ 431 #define PF_OSFP_WSIZE_MTU 0x0008 /* Window multiple of MTU */ 432 #define PF_OSFP_PSIZE_MOD 0x0010 /* packet size modulus */ 433 #define PF_OSFP_PSIZE_DC 0x0020 /* packet size don't care */ 434 #define PF_OSFP_WSCALE 0x0040 /* TCP window scaling */ 435 #define PF_OSFP_WSCALE_MOD 0x0080 /* TCP window scale modulus */ 436 #define PF_OSFP_WSCALE_DC 0x0100 /* TCP window scale dont-care */ 437 #define PF_OSFP_MSS 0x0200 /* TCP MSS */ 438 #define PF_OSFP_MSS_MOD 0x0400 /* TCP MSS modulus */ 439 #define PF_OSFP_MSS_DC 0x0800 /* TCP MSS dont-care */ 440 #define PF_OSFP_DF 0x1000 /* IPv4 don't fragment bit */ 441 #define PF_OSFP_TS0 0x2000 /* Zero timestamp */ 442 #define PF_OSFP_INET6 0x4000 /* IPv6 */ 443 u_int8_t fp_optcnt; /* TCP option count */ 444 u_int8_t fp_wscale; /* TCP window scaling */ 445 u_int8_t fp_ttl; /* IPv4 TTL */ 446 #define PF_OSFP_MAXTTL_OFFSET 40 447 /* TCP options packing */ 448 #define PF_OSFP_TCPOPT_NOP 0x0 /* TCP NOP option */ 449 #define PF_OSFP_TCPOPT_WSCALE 0x1 /* TCP window scaling option */ 450 #define PF_OSFP_TCPOPT_MSS 0x2 /* TCP max segment size opt */ 451 #define PF_OSFP_TCPOPT_SACK 0x3 /* TCP SACK OK option */ 452 #define PF_OSFP_TCPOPT_TS 0x4 /* TCP timestamp option */ 453 #define PF_OSFP_TCPOPT_BITS 3 /* bits used by each option */ 454 #define PF_OSFP_MAX_OPTS \ 455 (sizeof(((struct pf_os_fingerprint *)0)->fp_tcpopts) * 8) \ 456 / PF_OSFP_TCPOPT_BITS 457 458 SLIST_ENTRY(pf_os_fingerprint) fp_next; 459 }; 460 461 struct pf_osfp_ioctl { 462 struct pf_osfp_entry fp_os; 463 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 464 u_int16_t fp_wsize; /* TCP window size */ 465 u_int16_t fp_psize; /* ip->ip_len */ 466 u_int16_t fp_mss; /* TCP MSS */ 467 u_int16_t fp_flags; 468 u_int8_t fp_optcnt; /* TCP option count */ 469 u_int8_t fp_wscale; /* TCP window scaling */ 470 u_int8_t fp_ttl; /* IPv4 TTL */ 471 472 int fp_getnum; /* DIOCOSFPGET number */ 473 }; 474 475 476 union pf_rule_ptr { 477 struct pf_rule *ptr; 478 u_int32_t nr; 479 }; 480 481 #define PF_ANCHOR_NAME_SIZE 64 482 483 struct pf_rule { 484 struct pf_rule_addr src; 485 struct pf_rule_addr dst; 486 #define PF_SKIP_IFP 0 487 #define PF_SKIP_DIR 1 488 #define PF_SKIP_AF 2 489 #define PF_SKIP_PROTO 3 490 #define PF_SKIP_SRC_ADDR 4 491 #define PF_SKIP_SRC_PORT 5 492 #define PF_SKIP_DST_ADDR 6 493 #define PF_SKIP_DST_PORT 7 494 #define PF_SKIP_COUNT 8 495 union pf_rule_ptr skip[PF_SKIP_COUNT]; 496 #define PF_RULE_LABEL_SIZE 64 497 char label[PF_RULE_LABEL_SIZE]; 498 char ifname[IFNAMSIZ]; 499 char qname[PF_QNAME_SIZE]; 500 char pqname[PF_QNAME_SIZE]; 501 #define PF_TAG_NAME_SIZE 64 502 char tagname[PF_TAG_NAME_SIZE]; 503 char match_tagname[PF_TAG_NAME_SIZE]; 504 505 char overload_tblname[PF_TABLE_NAME_SIZE]; 506 507 TAILQ_ENTRY(pf_rule) entries; 508 struct pf_pool rpool; 509 510 u_int64_t evaluations; 511 u_int64_t packets[2]; 512 u_int64_t bytes[2]; 513 514 struct pfi_kif *kif; 515 struct pf_anchor *anchor; 516 struct pfr_ktable *overload_tbl; 517 518 pf_osfp_t os_fingerprint; 519 520 int rtableid; 521 u_int32_t timeout[PFTM_MAX]; 522 u_int32_t max_states; 523 u_int32_t max_src_nodes; 524 u_int32_t max_src_states; 525 u_int32_t max_src_conn; 526 struct { 527 u_int32_t limit; 528 u_int32_t seconds; 529 } max_src_conn_rate; 530 u_int32_t qid; 531 u_int32_t pqid; 532 u_int32_t rt_listid; 533 u_int32_t nr; 534 u_int32_t prob; 535 uid_t cuid; 536 pid_t cpid; 537 538 counter_u64_t states_cur; 539 counter_u64_t states_tot; 540 counter_u64_t src_nodes; 541 542 u_int16_t return_icmp; 543 u_int16_t return_icmp6; 544 u_int16_t max_mss; 545 u_int16_t tag; 546 u_int16_t match_tag; 547 u_int16_t scrub_flags; 548 549 struct pf_rule_uid uid; 550 struct pf_rule_gid gid; 551 552 u_int32_t rule_flag; 553 u_int8_t action; 554 u_int8_t direction; 555 u_int8_t log; 556 u_int8_t logif; 557 u_int8_t quick; 558 u_int8_t ifnot; 559 u_int8_t match_tag_not; 560 u_int8_t natpass; 561 562 #define PF_STATE_NORMAL 0x1 563 #define PF_STATE_MODULATE 0x2 564 #define PF_STATE_SYNPROXY 0x3 565 u_int8_t keep_state; 566 sa_family_t af; 567 u_int8_t proto; 568 u_int8_t type; 569 u_int8_t code; 570 u_int8_t flags; 571 u_int8_t flagset; 572 u_int8_t min_ttl; 573 u_int8_t allow_opts; 574 u_int8_t rt; 575 u_int8_t return_ttl; 576 u_int8_t tos; 577 u_int8_t set_tos; 578 u_int8_t anchor_relative; 579 u_int8_t anchor_wildcard; 580 581 #define PF_FLUSH 0x01 582 #define PF_FLUSH_GLOBAL 0x02 583 u_int8_t flush; 584 #define PF_PRIO_ZERO 0xff /* match "prio 0" packets */ 585 #define PF_PRIO_MAX 7 586 u_int8_t prio; 587 u_int8_t set_prio[2]; 588 589 struct { 590 struct pf_addr addr; 591 u_int16_t port; 592 } divert; 593 594 uint64_t u_states_cur; 595 uint64_t u_states_tot; 596 uint64_t u_src_nodes; 597 }; 598 599 /* rule flags */ 600 #define PFRULE_DROP 0x0000 601 #define PFRULE_RETURNRST 0x0001 602 #define PFRULE_FRAGMENT 0x0002 603 #define PFRULE_RETURNICMP 0x0004 604 #define PFRULE_RETURN 0x0008 605 #define PFRULE_NOSYNC 0x0010 606 #define PFRULE_SRCTRACK 0x0020 /* track source states */ 607 #define PFRULE_RULESRCTRACK 0x0040 /* per rule */ 608 #define PFRULE_REFS 0x0080 /* rule has references */ 609 610 /* scrub flags */ 611 #define PFRULE_NODF 0x0100 612 #define PFRULE_RANDOMID 0x0800 613 #define PFRULE_REASSEMBLE_TCP 0x1000 614 #define PFRULE_SET_TOS 0x2000 615 616 /* rule flags again */ 617 #define PFRULE_IFBOUND 0x00010000 /* if-bound */ 618 #define PFRULE_STATESLOPPY 0x00020000 /* sloppy state tracking */ 619 620 #define PFSTATE_HIWAT 10000 /* default state table size */ 621 #define PFSTATE_ADAPT_START 6000 /* default adaptive timeout start */ 622 #define PFSTATE_ADAPT_END 12000 /* default adaptive timeout end */ 623 624 625 struct pf_threshold { 626 u_int32_t limit; 627 #define PF_THRESHOLD_MULT 1000 628 #define PF_THRESHOLD_MAX 0xffffffff / PF_THRESHOLD_MULT 629 u_int32_t seconds; 630 u_int32_t count; 631 u_int32_t last; 632 }; 633 634 struct pf_src_node { 635 LIST_ENTRY(pf_src_node) entry; 636 struct pf_addr addr; 637 struct pf_addr raddr; 638 union pf_rule_ptr rule; 639 struct pfi_kif *kif; 640 u_int64_t bytes[2]; 641 u_int64_t packets[2]; 642 u_int32_t states; 643 u_int32_t conn; 644 struct pf_threshold conn_rate; 645 u_int32_t creation; 646 u_int32_t expire; 647 sa_family_t af; 648 u_int8_t ruletype; 649 }; 650 651 #define PFSNODE_HIWAT 10000 /* default source node table size */ 652 653 struct pf_state_scrub { 654 struct timeval pfss_last; /* time received last packet */ 655 u_int32_t pfss_tsecr; /* last echoed timestamp */ 656 u_int32_t pfss_tsval; /* largest timestamp */ 657 u_int32_t pfss_tsval0; /* original timestamp */ 658 u_int16_t pfss_flags; 659 #define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */ 660 #define PFSS_PAWS 0x0010 /* stricter PAWS checks */ 661 #define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */ 662 #define PFSS_DATA_TS 0x0040 /* timestamp on data packets */ 663 #define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */ 664 u_int8_t pfss_ttl; /* stashed TTL */ 665 u_int8_t pad; 666 u_int32_t pfss_ts_mod; /* timestamp modulation */ 667 }; 668 669 struct pf_state_host { 670 struct pf_addr addr; 671 u_int16_t port; 672 u_int16_t pad; 673 }; 674 675 struct pf_state_peer { 676 struct pf_state_scrub *scrub; /* state is scrubbed */ 677 u_int32_t seqlo; /* Max sequence number sent */ 678 u_int32_t seqhi; /* Max the other end ACKd + win */ 679 u_int32_t seqdiff; /* Sequence number modulator */ 680 u_int16_t max_win; /* largest window (pre scaling) */ 681 u_int16_t mss; /* Maximum segment size option */ 682 u_int8_t state; /* active state level */ 683 u_int8_t wscale; /* window scaling factor */ 684 u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */ 685 u_int8_t pad[1]; 686 }; 687 688 /* Keep synced with struct pf_state_key. */ 689 struct pf_state_key_cmp { 690 struct pf_addr addr[2]; 691 u_int16_t port[2]; 692 sa_family_t af; 693 u_int8_t proto; 694 u_int8_t pad[2]; 695 }; 696 697 struct pf_state_key { 698 struct pf_addr addr[2]; 699 u_int16_t port[2]; 700 sa_family_t af; 701 u_int8_t proto; 702 u_int8_t pad[2]; 703 704 LIST_ENTRY(pf_state_key) entry; 705 TAILQ_HEAD(, pf_state) states[2]; 706 }; 707 708 /* Keep synced with struct pf_state. */ 709 struct pf_state_cmp { 710 u_int64_t id; 711 u_int32_t creatorid; 712 u_int8_t direction; 713 u_int8_t pad[3]; 714 }; 715 716 struct pf_state { 717 u_int64_t id; 718 u_int32_t creatorid; 719 u_int8_t direction; 720 u_int8_t pad[3]; 721 722 u_int refs; 723 TAILQ_ENTRY(pf_state) sync_list; 724 TAILQ_ENTRY(pf_state) key_list[2]; 725 LIST_ENTRY(pf_state) entry; 726 struct pf_state_peer src; 727 struct pf_state_peer dst; 728 union pf_rule_ptr rule; 729 union pf_rule_ptr anchor; 730 union pf_rule_ptr nat_rule; 731 struct pf_addr rt_addr; 732 struct pf_state_key *key[2]; /* addresses stack and wire */ 733 struct pfi_kif *kif; 734 struct pfi_kif *rt_kif; 735 struct pf_src_node *src_node; 736 struct pf_src_node *nat_src_node; 737 u_int64_t packets[2]; 738 u_int64_t bytes[2]; 739 u_int32_t creation; 740 u_int32_t expire; 741 u_int32_t pfsync_time; 742 u_int16_t tag; 743 u_int8_t log; 744 u_int8_t state_flags; 745 #define PFSTATE_ALLOWOPTS 0x01 746 #define PFSTATE_SLOPPY 0x02 747 /* was PFSTATE_PFLOW 0x04 */ 748 #define PFSTATE_NOSYNC 0x08 749 #define PFSTATE_ACK 0x10 750 #define PFSTATE_SETPRIO 0x0200 751 #define PFSTATE_SETMASK (PFSTATE_SETPRIO) 752 u_int8_t timeout; 753 u_int8_t sync_state; /* PFSYNC_S_x */ 754 755 /* XXX */ 756 u_int8_t sync_updates; 757 u_int8_t _tail[3]; 758 }; 759 760 /* 761 * Unified state structures for pulling states out of the kernel 762 * used by pfsync(4) and the pf(4) ioctl. 763 */ 764 struct pfsync_state_scrub { 765 u_int16_t pfss_flags; 766 u_int8_t pfss_ttl; /* stashed TTL */ 767 #define PFSYNC_SCRUB_FLAG_VALID 0x01 768 u_int8_t scrub_flag; 769 u_int32_t pfss_ts_mod; /* timestamp modulation */ 770 } __packed; 771 772 struct pfsync_state_peer { 773 struct pfsync_state_scrub scrub; /* state is scrubbed */ 774 u_int32_t seqlo; /* Max sequence number sent */ 775 u_int32_t seqhi; /* Max the other end ACKd + win */ 776 u_int32_t seqdiff; /* Sequence number modulator */ 777 u_int16_t max_win; /* largest window (pre scaling) */ 778 u_int16_t mss; /* Maximum segment size option */ 779 u_int8_t state; /* active state level */ 780 u_int8_t wscale; /* window scaling factor */ 781 u_int8_t pad[6]; 782 } __packed; 783 784 struct pfsync_state_key { 785 struct pf_addr addr[2]; 786 u_int16_t port[2]; 787 }; 788 789 struct pfsync_state { 790 u_int64_t id; 791 char ifname[IFNAMSIZ]; 792 struct pfsync_state_key key[2]; 793 struct pfsync_state_peer src; 794 struct pfsync_state_peer dst; 795 struct pf_addr rt_addr; 796 u_int32_t rule; 797 u_int32_t anchor; 798 u_int32_t nat_rule; 799 u_int32_t creation; 800 u_int32_t expire; 801 u_int32_t packets[2][2]; 802 u_int32_t bytes[2][2]; 803 u_int32_t creatorid; 804 sa_family_t af; 805 u_int8_t proto; 806 u_int8_t direction; 807 u_int8_t __spare[2]; 808 u_int8_t log; 809 u_int8_t state_flags; 810 u_int8_t timeout; 811 u_int8_t sync_flags; 812 u_int8_t updates; 813 } __packed; 814 815 #ifdef _KERNEL 816 /* pfsync */ 817 typedef int pfsync_state_import_t(struct pfsync_state *, u_int8_t); 818 typedef void pfsync_insert_state_t(struct pf_state *); 819 typedef void pfsync_update_state_t(struct pf_state *); 820 typedef void pfsync_delete_state_t(struct pf_state *); 821 typedef void pfsync_clear_states_t(u_int32_t, const char *); 822 typedef int pfsync_defer_t(struct pf_state *, struct mbuf *); 823 824 extern pfsync_state_import_t *pfsync_state_import_ptr; 825 extern pfsync_insert_state_t *pfsync_insert_state_ptr; 826 extern pfsync_update_state_t *pfsync_update_state_ptr; 827 extern pfsync_delete_state_t *pfsync_delete_state_ptr; 828 extern pfsync_clear_states_t *pfsync_clear_states_ptr; 829 extern pfsync_defer_t *pfsync_defer_ptr; 830 831 void pfsync_state_export(struct pfsync_state *, 832 struct pf_state *); 833 834 /* pflog */ 835 struct pf_ruleset; 836 struct pf_pdesc; 837 typedef int pflog_packet_t(struct pfi_kif *, struct mbuf *, sa_family_t, 838 u_int8_t, u_int8_t, struct pf_rule *, struct pf_rule *, 839 struct pf_ruleset *, struct pf_pdesc *, int); 840 extern pflog_packet_t *pflog_packet_ptr; 841 842 #endif /* _KERNEL */ 843 844 #define PFSYNC_FLAG_SRCNODE 0x04 845 #define PFSYNC_FLAG_NATSRCNODE 0x08 846 847 /* for copies to/from network byte order */ 848 /* ioctl interface also uses network byte order */ 849 #define pf_state_peer_hton(s,d) do { \ 850 (d)->seqlo = htonl((s)->seqlo); \ 851 (d)->seqhi = htonl((s)->seqhi); \ 852 (d)->seqdiff = htonl((s)->seqdiff); \ 853 (d)->max_win = htons((s)->max_win); \ 854 (d)->mss = htons((s)->mss); \ 855 (d)->state = (s)->state; \ 856 (d)->wscale = (s)->wscale; \ 857 if ((s)->scrub) { \ 858 (d)->scrub.pfss_flags = \ 859 htons((s)->scrub->pfss_flags & PFSS_TIMESTAMP); \ 860 (d)->scrub.pfss_ttl = (s)->scrub->pfss_ttl; \ 861 (d)->scrub.pfss_ts_mod = htonl((s)->scrub->pfss_ts_mod);\ 862 (d)->scrub.scrub_flag = PFSYNC_SCRUB_FLAG_VALID; \ 863 } \ 864 } while (0) 865 866 #define pf_state_peer_ntoh(s,d) do { \ 867 (d)->seqlo = ntohl((s)->seqlo); \ 868 (d)->seqhi = ntohl((s)->seqhi); \ 869 (d)->seqdiff = ntohl((s)->seqdiff); \ 870 (d)->max_win = ntohs((s)->max_win); \ 871 (d)->mss = ntohs((s)->mss); \ 872 (d)->state = (s)->state; \ 873 (d)->wscale = (s)->wscale; \ 874 if ((s)->scrub.scrub_flag == PFSYNC_SCRUB_FLAG_VALID && \ 875 (d)->scrub != NULL) { \ 876 (d)->scrub->pfss_flags = \ 877 ntohs((s)->scrub.pfss_flags) & PFSS_TIMESTAMP; \ 878 (d)->scrub->pfss_ttl = (s)->scrub.pfss_ttl; \ 879 (d)->scrub->pfss_ts_mod = ntohl((s)->scrub.pfss_ts_mod);\ 880 } \ 881 } while (0) 882 883 #define pf_state_counter_hton(s,d) do { \ 884 d[0] = htonl((s>>32)&0xffffffff); \ 885 d[1] = htonl(s&0xffffffff); \ 886 } while (0) 887 888 #define pf_state_counter_from_pfsync(s) \ 889 (((u_int64_t)(s[0])<<32) | (u_int64_t)(s[1])) 890 891 #define pf_state_counter_ntoh(s,d) do { \ 892 d = ntohl(s[0]); \ 893 d = d<<32; \ 894 d += ntohl(s[1]); \ 895 } while (0) 896 897 TAILQ_HEAD(pf_rulequeue, pf_rule); 898 899 struct pf_anchor; 900 901 struct pf_ruleset { 902 struct { 903 struct pf_rulequeue queues[2]; 904 struct { 905 struct pf_rulequeue *ptr; 906 struct pf_rule **ptr_array; 907 u_int32_t rcount; 908 u_int32_t ticket; 909 int open; 910 } active, inactive; 911 } rules[PF_RULESET_MAX]; 912 struct pf_anchor *anchor; 913 u_int32_t tticket; 914 int tables; 915 int topen; 916 }; 917 918 RB_HEAD(pf_anchor_global, pf_anchor); 919 RB_HEAD(pf_anchor_node, pf_anchor); 920 struct pf_anchor { 921 RB_ENTRY(pf_anchor) entry_global; 922 RB_ENTRY(pf_anchor) entry_node; 923 struct pf_anchor *parent; 924 struct pf_anchor_node children; 925 char name[PF_ANCHOR_NAME_SIZE]; 926 char path[MAXPATHLEN]; 927 struct pf_ruleset ruleset; 928 int refcnt; /* anchor rules */ 929 int match; /* XXX: used for pfctl black magic */ 930 }; 931 RB_PROTOTYPE(pf_anchor_global, pf_anchor, entry_global, pf_anchor_compare); 932 RB_PROTOTYPE(pf_anchor_node, pf_anchor, entry_node, pf_anchor_compare); 933 934 #define PF_RESERVED_ANCHOR "_pf" 935 936 #define PFR_TFLAG_PERSIST 0x00000001 937 #define PFR_TFLAG_CONST 0x00000002 938 #define PFR_TFLAG_ACTIVE 0x00000004 939 #define PFR_TFLAG_INACTIVE 0x00000008 940 #define PFR_TFLAG_REFERENCED 0x00000010 941 #define PFR_TFLAG_REFDANCHOR 0x00000020 942 #define PFR_TFLAG_COUNTERS 0x00000040 943 /* Adjust masks below when adding flags. */ 944 #define PFR_TFLAG_USRMASK (PFR_TFLAG_PERSIST | \ 945 PFR_TFLAG_CONST | \ 946 PFR_TFLAG_COUNTERS) 947 #define PFR_TFLAG_SETMASK (PFR_TFLAG_ACTIVE | \ 948 PFR_TFLAG_INACTIVE | \ 949 PFR_TFLAG_REFERENCED | \ 950 PFR_TFLAG_REFDANCHOR) 951 #define PFR_TFLAG_ALLMASK (PFR_TFLAG_PERSIST | \ 952 PFR_TFLAG_CONST | \ 953 PFR_TFLAG_ACTIVE | \ 954 PFR_TFLAG_INACTIVE | \ 955 PFR_TFLAG_REFERENCED | \ 956 PFR_TFLAG_REFDANCHOR | \ 957 PFR_TFLAG_COUNTERS) 958 959 struct pf_anchor_stackframe; 960 961 struct pfr_table { 962 char pfrt_anchor[MAXPATHLEN]; 963 char pfrt_name[PF_TABLE_NAME_SIZE]; 964 u_int32_t pfrt_flags; 965 u_int8_t pfrt_fback; 966 }; 967 968 enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED, 969 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE, 970 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_NOCOUNT, PFR_FB_MAX }; 971 972 struct pfr_addr { 973 union { 974 struct in_addr _pfra_ip4addr; 975 struct in6_addr _pfra_ip6addr; 976 } pfra_u; 977 u_int8_t pfra_af; 978 u_int8_t pfra_net; 979 u_int8_t pfra_not; 980 u_int8_t pfra_fback; 981 }; 982 #define pfra_ip4addr pfra_u._pfra_ip4addr 983 #define pfra_ip6addr pfra_u._pfra_ip6addr 984 985 enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX }; 986 enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX }; 987 #define PFR_OP_XPASS PFR_OP_ADDR_MAX 988 989 struct pfr_astats { 990 struct pfr_addr pfras_a; 991 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 992 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 993 long pfras_tzero; 994 }; 995 996 enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX }; 997 998 struct pfr_tstats { 999 struct pfr_table pfrts_t; 1000 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1001 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1002 u_int64_t pfrts_match; 1003 u_int64_t pfrts_nomatch; 1004 long pfrts_tzero; 1005 int pfrts_cnt; 1006 int pfrts_refcnt[PFR_REFCNT_MAX]; 1007 }; 1008 #define pfrts_name pfrts_t.pfrt_name 1009 #define pfrts_flags pfrts_t.pfrt_flags 1010 1011 #ifndef _SOCKADDR_UNION_DEFINED 1012 #define _SOCKADDR_UNION_DEFINED 1013 union sockaddr_union { 1014 struct sockaddr sa; 1015 struct sockaddr_in sin; 1016 struct sockaddr_in6 sin6; 1017 }; 1018 #endif /* _SOCKADDR_UNION_DEFINED */ 1019 1020 struct pfr_kcounters { 1021 u_int64_t pfrkc_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1022 u_int64_t pfrkc_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1023 }; 1024 1025 SLIST_HEAD(pfr_kentryworkq, pfr_kentry); 1026 struct pfr_kentry { 1027 struct radix_node pfrke_node[2]; 1028 union sockaddr_union pfrke_sa; 1029 SLIST_ENTRY(pfr_kentry) pfrke_workq; 1030 struct pfr_kcounters *pfrke_counters; 1031 long pfrke_tzero; 1032 u_int8_t pfrke_af; 1033 u_int8_t pfrke_net; 1034 u_int8_t pfrke_not; 1035 u_int8_t pfrke_mark; 1036 }; 1037 1038 SLIST_HEAD(pfr_ktableworkq, pfr_ktable); 1039 RB_HEAD(pfr_ktablehead, pfr_ktable); 1040 struct pfr_ktable { 1041 struct pfr_tstats pfrkt_ts; 1042 RB_ENTRY(pfr_ktable) pfrkt_tree; 1043 SLIST_ENTRY(pfr_ktable) pfrkt_workq; 1044 struct radix_node_head *pfrkt_ip4; 1045 struct radix_node_head *pfrkt_ip6; 1046 struct pfr_ktable *pfrkt_shadow; 1047 struct pfr_ktable *pfrkt_root; 1048 struct pf_ruleset *pfrkt_rs; 1049 long pfrkt_larg; 1050 int pfrkt_nflags; 1051 }; 1052 #define pfrkt_t pfrkt_ts.pfrts_t 1053 #define pfrkt_name pfrkt_t.pfrt_name 1054 #define pfrkt_anchor pfrkt_t.pfrt_anchor 1055 #define pfrkt_ruleset pfrkt_t.pfrt_ruleset 1056 #define pfrkt_flags pfrkt_t.pfrt_flags 1057 #define pfrkt_cnt pfrkt_ts.pfrts_cnt 1058 #define pfrkt_refcnt pfrkt_ts.pfrts_refcnt 1059 #define pfrkt_packets pfrkt_ts.pfrts_packets 1060 #define pfrkt_bytes pfrkt_ts.pfrts_bytes 1061 #define pfrkt_match pfrkt_ts.pfrts_match 1062 #define pfrkt_nomatch pfrkt_ts.pfrts_nomatch 1063 #define pfrkt_tzero pfrkt_ts.pfrts_tzero 1064 1065 /* keep synced with pfi_kif, used in RB_FIND */ 1066 struct pfi_kif_cmp { 1067 char pfik_name[IFNAMSIZ]; 1068 }; 1069 1070 struct pfi_kif { 1071 char pfik_name[IFNAMSIZ]; 1072 union { 1073 RB_ENTRY(pfi_kif) _pfik_tree; 1074 LIST_ENTRY(pfi_kif) _pfik_list; 1075 } _pfik_glue; 1076 #define pfik_tree _pfik_glue._pfik_tree 1077 #define pfik_list _pfik_glue._pfik_list 1078 u_int64_t pfik_packets[2][2][2]; 1079 u_int64_t pfik_bytes[2][2][2]; 1080 u_int32_t pfik_tzero; 1081 u_int pfik_flags; 1082 struct ifnet *pfik_ifp; 1083 struct ifg_group *pfik_group; 1084 u_int pfik_rulerefs; 1085 TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs; 1086 }; 1087 1088 #define PFI_IFLAG_REFS 0x0001 /* has state references */ 1089 #define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */ 1090 1091 struct pf_pdesc { 1092 struct { 1093 int done; 1094 uid_t uid; 1095 gid_t gid; 1096 } lookup; 1097 u_int64_t tot_len; /* Make Mickey money */ 1098 union { 1099 struct tcphdr *tcp; 1100 struct udphdr *udp; 1101 struct icmp *icmp; 1102 #ifdef INET6 1103 struct icmp6_hdr *icmp6; 1104 #endif /* INET6 */ 1105 void *any; 1106 } hdr; 1107 1108 struct pf_rule *nat_rule; /* nat/rdr rule applied to packet */ 1109 struct pf_addr *src; /* src address */ 1110 struct pf_addr *dst; /* dst address */ 1111 u_int16_t *sport; 1112 u_int16_t *dport; 1113 struct pf_mtag *pf_mtag; 1114 1115 u_int32_t p_len; /* total length of payload */ 1116 1117 u_int16_t *ip_sum; 1118 u_int16_t *proto_sum; 1119 u_int16_t flags; /* Let SCRUB trigger behavior in 1120 * state code. Easier than tags */ 1121 #define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */ 1122 #define PFDESC_IP_REAS 0x0002 /* IP frags would've been reassembled */ 1123 sa_family_t af; 1124 u_int8_t proto; 1125 u_int8_t tos; 1126 u_int8_t dir; /* direction */ 1127 u_int8_t sidx; /* key index for source */ 1128 u_int8_t didx; /* key index for destination */ 1129 }; 1130 1131 /* flags for RDR options */ 1132 #define PF_DPORT_RANGE 0x01 /* Dest port uses range */ 1133 #define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */ 1134 1135 /* UDP state enumeration */ 1136 #define PFUDPS_NO_TRAFFIC 0 1137 #define PFUDPS_SINGLE 1 1138 #define PFUDPS_MULTIPLE 2 1139 1140 #define PFUDPS_NSTATES 3 /* number of state levels */ 1141 1142 #define PFUDPS_NAMES { \ 1143 "NO_TRAFFIC", \ 1144 "SINGLE", \ 1145 "MULTIPLE", \ 1146 NULL \ 1147 } 1148 1149 /* Other protocol state enumeration */ 1150 #define PFOTHERS_NO_TRAFFIC 0 1151 #define PFOTHERS_SINGLE 1 1152 #define PFOTHERS_MULTIPLE 2 1153 1154 #define PFOTHERS_NSTATES 3 /* number of state levels */ 1155 1156 #define PFOTHERS_NAMES { \ 1157 "NO_TRAFFIC", \ 1158 "SINGLE", \ 1159 "MULTIPLE", \ 1160 NULL \ 1161 } 1162 1163 #define ACTION_SET(a, x) \ 1164 do { \ 1165 if ((a) != NULL) \ 1166 *(a) = (x); \ 1167 } while (0) 1168 1169 #define REASON_SET(a, x) \ 1170 do { \ 1171 if ((a) != NULL) \ 1172 *(a) = (x); \ 1173 if (x < PFRES_MAX) \ 1174 counter_u64_add(V_pf_status.counters[x], 1); \ 1175 } while (0) 1176 1177 struct pf_kstatus { 1178 counter_u64_t counters[PFRES_MAX]; /* reason for passing/dropping */ 1179 counter_u64_t lcounters[LCNT_MAX]; /* limit counters */ 1180 counter_u64_t fcounters[FCNT_MAX]; /* state operation counters */ 1181 counter_u64_t scounters[SCNT_MAX]; /* src_node operation counters */ 1182 uint32_t states; 1183 uint32_t src_nodes; 1184 uint32_t running; 1185 uint32_t since; 1186 uint32_t debug; 1187 uint32_t hostid; 1188 char ifname[IFNAMSIZ]; 1189 uint8_t pf_chksum[PF_MD5_DIGEST_LENGTH]; 1190 }; 1191 1192 struct pf_divert { 1193 union { 1194 struct in_addr ipv4; 1195 struct in6_addr ipv6; 1196 } addr; 1197 u_int16_t port; 1198 }; 1199 1200 #define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */ 1201 #define PFR_KENTRY_HIWAT 200000 /* Number of table entries */ 1202 1203 /* 1204 * ioctl parameter structures 1205 */ 1206 1207 struct pfioc_pooladdr { 1208 u_int32_t action; 1209 u_int32_t ticket; 1210 u_int32_t nr; 1211 u_int32_t r_num; 1212 u_int8_t r_action; 1213 u_int8_t r_last; 1214 u_int8_t af; 1215 char anchor[MAXPATHLEN]; 1216 struct pf_pooladdr addr; 1217 }; 1218 1219 struct pfioc_rule { 1220 u_int32_t action; 1221 u_int32_t ticket; 1222 u_int32_t pool_ticket; 1223 u_int32_t nr; 1224 char anchor[MAXPATHLEN]; 1225 char anchor_call[MAXPATHLEN]; 1226 struct pf_rule rule; 1227 }; 1228 1229 struct pfioc_natlook { 1230 struct pf_addr saddr; 1231 struct pf_addr daddr; 1232 struct pf_addr rsaddr; 1233 struct pf_addr rdaddr; 1234 u_int16_t sport; 1235 u_int16_t dport; 1236 u_int16_t rsport; 1237 u_int16_t rdport; 1238 sa_family_t af; 1239 u_int8_t proto; 1240 u_int8_t direction; 1241 }; 1242 1243 struct pfioc_state { 1244 struct pfsync_state state; 1245 }; 1246 1247 struct pfioc_src_node_kill { 1248 sa_family_t psnk_af; 1249 struct pf_rule_addr psnk_src; 1250 struct pf_rule_addr psnk_dst; 1251 u_int psnk_killed; 1252 }; 1253 1254 struct pfioc_state_kill { 1255 struct pf_state_cmp psk_pfcmp; 1256 sa_family_t psk_af; 1257 int psk_proto; 1258 struct pf_rule_addr psk_src; 1259 struct pf_rule_addr psk_dst; 1260 char psk_ifname[IFNAMSIZ]; 1261 char psk_label[PF_RULE_LABEL_SIZE]; 1262 u_int psk_killed; 1263 }; 1264 1265 struct pfioc_states { 1266 int ps_len; 1267 union { 1268 caddr_t psu_buf; 1269 struct pfsync_state *psu_states; 1270 } ps_u; 1271 #define ps_buf ps_u.psu_buf 1272 #define ps_states ps_u.psu_states 1273 }; 1274 1275 struct pfioc_src_nodes { 1276 int psn_len; 1277 union { 1278 caddr_t psu_buf; 1279 struct pf_src_node *psu_src_nodes; 1280 } psn_u; 1281 #define psn_buf psn_u.psu_buf 1282 #define psn_src_nodes psn_u.psu_src_nodes 1283 }; 1284 1285 struct pfioc_if { 1286 char ifname[IFNAMSIZ]; 1287 }; 1288 1289 struct pfioc_tm { 1290 int timeout; 1291 int seconds; 1292 }; 1293 1294 struct pfioc_limit { 1295 int index; 1296 unsigned limit; 1297 }; 1298 1299 struct pfioc_altq { 1300 u_int32_t action; 1301 u_int32_t ticket; 1302 u_int32_t nr; 1303 struct pf_altq altq; 1304 }; 1305 1306 struct pfioc_qstats { 1307 u_int32_t ticket; 1308 u_int32_t nr; 1309 void *buf; 1310 int nbytes; 1311 u_int8_t scheduler; 1312 }; 1313 1314 struct pfioc_ruleset { 1315 u_int32_t nr; 1316 char path[MAXPATHLEN]; 1317 char name[PF_ANCHOR_NAME_SIZE]; 1318 }; 1319 1320 #define PF_RULESET_ALTQ (PF_RULESET_MAX) 1321 #define PF_RULESET_TABLE (PF_RULESET_MAX+1) 1322 struct pfioc_trans { 1323 int size; /* number of elements */ 1324 int esize; /* size of each element in bytes */ 1325 struct pfioc_trans_e { 1326 int rs_num; 1327 char anchor[MAXPATHLEN]; 1328 u_int32_t ticket; 1329 } *array; 1330 }; 1331 1332 #define PFR_FLAG_ATOMIC 0x00000001 /* unused */ 1333 #define PFR_FLAG_DUMMY 0x00000002 1334 #define PFR_FLAG_FEEDBACK 0x00000004 1335 #define PFR_FLAG_CLSTATS 0x00000008 1336 #define PFR_FLAG_ADDRSTOO 0x00000010 1337 #define PFR_FLAG_REPLACE 0x00000020 1338 #define PFR_FLAG_ALLRSETS 0x00000040 1339 #define PFR_FLAG_ALLMASK 0x0000007F 1340 #ifdef _KERNEL 1341 #define PFR_FLAG_USERIOCTL 0x10000000 1342 #endif 1343 1344 struct pfioc_table { 1345 struct pfr_table pfrio_table; 1346 void *pfrio_buffer; 1347 int pfrio_esize; 1348 int pfrio_size; 1349 int pfrio_size2; 1350 int pfrio_nadd; 1351 int pfrio_ndel; 1352 int pfrio_nchange; 1353 int pfrio_flags; 1354 u_int32_t pfrio_ticket; 1355 }; 1356 #define pfrio_exists pfrio_nadd 1357 #define pfrio_nzero pfrio_nadd 1358 #define pfrio_nmatch pfrio_nadd 1359 #define pfrio_naddr pfrio_size2 1360 #define pfrio_setflag pfrio_size2 1361 #define pfrio_clrflag pfrio_nadd 1362 1363 struct pfioc_iface { 1364 char pfiio_name[IFNAMSIZ]; 1365 void *pfiio_buffer; 1366 int pfiio_esize; 1367 int pfiio_size; 1368 int pfiio_nzero; 1369 int pfiio_flags; 1370 }; 1371 1372 1373 /* 1374 * ioctl operations 1375 */ 1376 1377 #define DIOCSTART _IO ('D', 1) 1378 #define DIOCSTOP _IO ('D', 2) 1379 #define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule) 1380 #define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule) 1381 #define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule) 1382 /* XXX cut 8 - 17 */ 1383 #define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill) 1384 #define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state) 1385 #define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if) 1386 #define DIOCGETSTATUS _IOWR('D', 21, struct pf_status) 1387 #define DIOCCLRSTATUS _IO ('D', 22) 1388 #define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook) 1389 #define DIOCSETDEBUG _IOWR('D', 24, u_int32_t) 1390 #define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states) 1391 #define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule) 1392 /* XXX cut 26 - 28 */ 1393 #define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm) 1394 #define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm) 1395 #define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state) 1396 #define DIOCCLRRULECTRS _IO ('D', 38) 1397 #define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit) 1398 #define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit) 1399 #define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill) 1400 #define DIOCSTARTALTQ _IO ('D', 42) 1401 #define DIOCSTOPALTQ _IO ('D', 43) 1402 #define DIOCADDALTQ _IOWR('D', 45, struct pfioc_altq) 1403 #define DIOCGETALTQS _IOWR('D', 47, struct pfioc_altq) 1404 #define DIOCGETALTQ _IOWR('D', 48, struct pfioc_altq) 1405 #define DIOCCHANGEALTQ _IOWR('D', 49, struct pfioc_altq) 1406 #define DIOCGETQSTATS _IOWR('D', 50, struct pfioc_qstats) 1407 #define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr) 1408 #define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr) 1409 #define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr) 1410 #define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr) 1411 #define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr) 1412 /* XXX cut 55 - 57 */ 1413 #define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset) 1414 #define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset) 1415 #define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table) 1416 #define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table) 1417 #define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table) 1418 #define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table) 1419 #define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table) 1420 #define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table) 1421 #define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table) 1422 #define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table) 1423 #define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table) 1424 #define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table) 1425 #define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table) 1426 #define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table) 1427 #define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table) 1428 #define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table) 1429 #define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table) 1430 #define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table) 1431 #define DIOCOSFPFLUSH _IO('D', 78) 1432 #define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl) 1433 #define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl) 1434 #define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans) 1435 #define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans) 1436 #define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans) 1437 #define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes) 1438 #define DIOCCLRSRCNODES _IO('D', 85) 1439 #define DIOCSETHOSTID _IOWR('D', 86, u_int32_t) 1440 #define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface) 1441 #define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface) 1442 #define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface) 1443 #define DIOCKILLSRCNODES _IOWR('D', 91, struct pfioc_src_node_kill) 1444 struct pf_ifspeed { 1445 char ifname[IFNAMSIZ]; 1446 u_int32_t baudrate; 1447 }; 1448 #define DIOCGIFSPEED _IOWR('D', 92, struct pf_ifspeed) 1449 1450 #ifdef _KERNEL 1451 LIST_HEAD(pf_src_node_list, pf_src_node); 1452 struct pf_srchash { 1453 struct pf_src_node_list nodes; 1454 struct mtx lock; 1455 }; 1456 1457 struct pf_keyhash { 1458 LIST_HEAD(, pf_state_key) keys; 1459 struct mtx lock; 1460 }; 1461 1462 struct pf_idhash { 1463 LIST_HEAD(, pf_state) states; 1464 struct mtx lock; 1465 }; 1466 1467 extern u_long pf_hashmask; 1468 extern u_long pf_srchashmask; 1469 #define PF_HASHSIZ (32768) 1470 #define PF_SRCHASHSIZ (PF_HASHSIZ/4) 1471 VNET_DECLARE(struct pf_keyhash *, pf_keyhash); 1472 VNET_DECLARE(struct pf_idhash *, pf_idhash); 1473 #define V_pf_keyhash VNET(pf_keyhash) 1474 #define V_pf_idhash VNET(pf_idhash) 1475 VNET_DECLARE(struct pf_srchash *, pf_srchash); 1476 #define V_pf_srchash VNET(pf_srchash) 1477 1478 #define PF_IDHASH(s) (be64toh((s)->id) % (pf_hashmask + 1)) 1479 1480 VNET_DECLARE(void *, pf_swi_cookie); 1481 #define V_pf_swi_cookie VNET(pf_swi_cookie) 1482 1483 VNET_DECLARE(uint64_t, pf_stateid[MAXCPU]); 1484 #define V_pf_stateid VNET(pf_stateid) 1485 1486 TAILQ_HEAD(pf_altqqueue, pf_altq); 1487 VNET_DECLARE(struct pf_altqqueue, pf_altqs[2]); 1488 #define V_pf_altqs VNET(pf_altqs) 1489 VNET_DECLARE(struct pf_palist, pf_pabuf); 1490 #define V_pf_pabuf VNET(pf_pabuf) 1491 1492 VNET_DECLARE(u_int32_t, ticket_altqs_active); 1493 #define V_ticket_altqs_active VNET(ticket_altqs_active) 1494 VNET_DECLARE(u_int32_t, ticket_altqs_inactive); 1495 #define V_ticket_altqs_inactive VNET(ticket_altqs_inactive) 1496 VNET_DECLARE(int, altqs_inactive_open); 1497 #define V_altqs_inactive_open VNET(altqs_inactive_open) 1498 VNET_DECLARE(u_int32_t, ticket_pabuf); 1499 #define V_ticket_pabuf VNET(ticket_pabuf) 1500 VNET_DECLARE(struct pf_altqqueue *, pf_altqs_active); 1501 #define V_pf_altqs_active VNET(pf_altqs_active) 1502 VNET_DECLARE(struct pf_altqqueue *, pf_altqs_inactive); 1503 #define V_pf_altqs_inactive VNET(pf_altqs_inactive) 1504 1505 VNET_DECLARE(struct pf_rulequeue, pf_unlinked_rules); 1506 #define V_pf_unlinked_rules VNET(pf_unlinked_rules) 1507 1508 void pf_initialize(void); 1509 void pf_mtag_initialize(void); 1510 void pf_mtag_cleanup(void); 1511 void pf_cleanup(void); 1512 1513 struct pf_mtag *pf_get_mtag(struct mbuf *); 1514 1515 extern void pf_calc_skip_steps(struct pf_rulequeue *); 1516 #ifdef ALTQ 1517 extern void pf_altq_ifnet_event(struct ifnet *, int); 1518 #endif 1519 VNET_DECLARE(uma_zone_t, pf_state_z); 1520 #define V_pf_state_z VNET(pf_state_z) 1521 VNET_DECLARE(uma_zone_t, pf_state_key_z); 1522 #define V_pf_state_key_z VNET(pf_state_key_z) 1523 VNET_DECLARE(uma_zone_t, pf_state_scrub_z); 1524 #define V_pf_state_scrub_z VNET(pf_state_scrub_z) 1525 1526 extern void pf_purge_thread(void *); 1527 extern void pf_unload_vnet_purge(void); 1528 extern void pf_intr(void *); 1529 extern void pf_purge_expired_src_nodes(void); 1530 1531 extern int pf_unlink_state(struct pf_state *, u_int); 1532 #define PF_ENTER_LOCKED 0x00000001 1533 #define PF_RETURN_LOCKED 0x00000002 1534 extern int pf_state_insert(struct pfi_kif *, 1535 struct pf_state_key *, 1536 struct pf_state_key *, 1537 struct pf_state *); 1538 extern void pf_free_state(struct pf_state *); 1539 1540 static __inline void 1541 pf_ref_state(struct pf_state *s) 1542 { 1543 1544 refcount_acquire(&s->refs); 1545 } 1546 1547 static __inline int 1548 pf_release_state(struct pf_state *s) 1549 { 1550 1551 if (refcount_release(&s->refs)) { 1552 pf_free_state(s); 1553 return (1); 1554 } else 1555 return (0); 1556 } 1557 1558 extern struct pf_state *pf_find_state_byid(uint64_t, uint32_t); 1559 extern struct pf_state *pf_find_state_all(struct pf_state_key_cmp *, 1560 u_int, int *); 1561 extern struct pf_src_node *pf_find_src_node(struct pf_addr *, 1562 struct pf_rule *, sa_family_t, int); 1563 extern void pf_unlink_src_node(struct pf_src_node *); 1564 extern u_int pf_free_src_nodes(struct pf_src_node_list *); 1565 extern void pf_print_state(struct pf_state *); 1566 extern void pf_print_flags(u_int8_t); 1567 extern u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t, 1568 u_int8_t); 1569 extern u_int16_t pf_proto_cksum_fixup(struct mbuf *, u_int16_t, 1570 u_int16_t, u_int16_t, u_int8_t); 1571 1572 VNET_DECLARE(struct ifnet *, sync_ifp); 1573 #define V_sync_ifp VNET(sync_ifp); 1574 VNET_DECLARE(struct pf_rule, pf_default_rule); 1575 #define V_pf_default_rule VNET(pf_default_rule) 1576 extern void pf_addrcpy(struct pf_addr *, struct pf_addr *, 1577 u_int8_t); 1578 void pf_free_rule(struct pf_rule *); 1579 1580 #ifdef INET 1581 int pf_test(int, struct ifnet *, struct mbuf **, struct inpcb *); 1582 int pf_normalize_ip(struct mbuf **, int, struct pfi_kif *, u_short *, 1583 struct pf_pdesc *); 1584 #endif /* INET */ 1585 1586 #ifdef INET6 1587 int pf_test6(int, struct ifnet *, struct mbuf **, struct inpcb *); 1588 int pf_normalize_ip6(struct mbuf **, int, struct pfi_kif *, u_short *, 1589 struct pf_pdesc *); 1590 void pf_poolmask(struct pf_addr *, struct pf_addr*, 1591 struct pf_addr *, struct pf_addr *, u_int8_t); 1592 void pf_addr_inc(struct pf_addr *, sa_family_t); 1593 int pf_refragment6(struct ifnet *, struct mbuf **, struct m_tag *); 1594 #endif /* INET6 */ 1595 1596 u_int32_t pf_new_isn(struct pf_state *); 1597 void *pf_pull_hdr(struct mbuf *, int, void *, int, u_short *, u_short *, 1598 sa_family_t); 1599 void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t); 1600 void pf_change_proto_a(struct mbuf *, void *, u_int16_t *, u_int32_t, 1601 u_int8_t); 1602 void pf_change_tcp_a(struct mbuf *, void *, u_int16_t *, u_int32_t); 1603 void pf_send_deferred_syn(struct pf_state *); 1604 int pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *, 1605 struct pf_addr *, sa_family_t); 1606 int pf_match_addr_range(struct pf_addr *, struct pf_addr *, 1607 struct pf_addr *, sa_family_t); 1608 int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t); 1609 1610 void pf_normalize_init(void); 1611 void pf_normalize_cleanup(void); 1612 int pf_normalize_tcp(int, struct pfi_kif *, struct mbuf *, int, int, void *, 1613 struct pf_pdesc *); 1614 void pf_normalize_tcp_cleanup(struct pf_state *); 1615 int pf_normalize_tcp_init(struct mbuf *, int, struct pf_pdesc *, 1616 struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *); 1617 int pf_normalize_tcp_stateful(struct mbuf *, int, struct pf_pdesc *, 1618 u_short *, struct tcphdr *, struct pf_state *, 1619 struct pf_state_peer *, struct pf_state_peer *, int *); 1620 u_int32_t 1621 pf_state_expires(const struct pf_state *); 1622 void pf_purge_expired_fragments(void); 1623 void pf_purge_fragments(uint32_t); 1624 int pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kif *, 1625 int); 1626 int pf_socket_lookup(int, struct pf_pdesc *, struct mbuf *); 1627 struct pf_state_key *pf_alloc_state_key(int); 1628 void pfr_initialize(void); 1629 void pfr_cleanup(void); 1630 int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t); 1631 void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t, 1632 u_int64_t, int, int, int); 1633 int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, sa_family_t); 1634 void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *); 1635 struct pfr_ktable * 1636 pfr_attach_table(struct pf_ruleset *, char *); 1637 void pfr_detach_table(struct pfr_ktable *); 1638 int pfr_clr_tables(struct pfr_table *, int *, int); 1639 int pfr_add_tables(struct pfr_table *, int, int *, int); 1640 int pfr_del_tables(struct pfr_table *, int, int *, int); 1641 int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int); 1642 int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int); 1643 int pfr_clr_tstats(struct pfr_table *, int, int *, int); 1644 int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int); 1645 int pfr_clr_addrs(struct pfr_table *, int *, int); 1646 int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *, long); 1647 int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1648 int); 1649 int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1650 int); 1651 int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1652 int *, int *, int *, int, u_int32_t); 1653 int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int); 1654 int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int); 1655 int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *, 1656 int); 1657 int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1658 int); 1659 int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int); 1660 int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int); 1661 int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int); 1662 int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *, 1663 int *, u_int32_t, int); 1664 1665 MALLOC_DECLARE(PFI_MTYPE); 1666 VNET_DECLARE(struct pfi_kif *, pfi_all); 1667 #define V_pfi_all VNET(pfi_all) 1668 1669 void pfi_initialize(void); 1670 void pfi_initialize_vnet(void); 1671 void pfi_cleanup(void); 1672 void pfi_cleanup_vnet(void); 1673 void pfi_kif_ref(struct pfi_kif *); 1674 void pfi_kif_unref(struct pfi_kif *); 1675 struct pfi_kif *pfi_kif_find(const char *); 1676 struct pfi_kif *pfi_kif_attach(struct pfi_kif *, const char *); 1677 int pfi_kif_match(struct pfi_kif *, struct pfi_kif *); 1678 void pfi_kif_purge(void); 1679 int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *, 1680 sa_family_t); 1681 int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t); 1682 void pfi_dynaddr_remove(struct pfi_dynaddr *); 1683 void pfi_dynaddr_copyout(struct pf_addr_wrap *); 1684 void pfi_update_status(const char *, struct pf_status *); 1685 void pfi_get_ifaces(const char *, struct pfi_kif *, int *); 1686 int pfi_set_flags(const char *, int); 1687 int pfi_clear_flags(const char *, int); 1688 1689 int pf_match_tag(struct mbuf *, struct pf_rule *, int *, int); 1690 int pf_tag_packet(struct mbuf *, struct pf_pdesc *, int); 1691 int pf_addr_cmp(struct pf_addr *, struct pf_addr *, 1692 sa_family_t); 1693 void pf_qid2qname(u_int32_t, char *); 1694 1695 VNET_DECLARE(struct pf_kstatus, pf_status); 1696 #define V_pf_status VNET(pf_status) 1697 1698 struct pf_limit { 1699 uma_zone_t zone; 1700 u_int limit; 1701 }; 1702 VNET_DECLARE(struct pf_limit, pf_limits[PF_LIMIT_MAX]); 1703 #define V_pf_limits VNET(pf_limits) 1704 1705 #endif /* _KERNEL */ 1706 1707 #ifdef _KERNEL 1708 VNET_DECLARE(struct pf_anchor_global, pf_anchors); 1709 #define V_pf_anchors VNET(pf_anchors) 1710 VNET_DECLARE(struct pf_anchor, pf_main_anchor); 1711 #define V_pf_main_anchor VNET(pf_main_anchor) 1712 #define pf_main_ruleset V_pf_main_anchor.ruleset 1713 #endif 1714 1715 /* these ruleset functions can be linked into userland programs (pfctl) */ 1716 int pf_get_ruleset_number(u_int8_t); 1717 void pf_init_ruleset(struct pf_ruleset *); 1718 int pf_anchor_setup(struct pf_rule *, 1719 const struct pf_ruleset *, const char *); 1720 int pf_anchor_copyout(const struct pf_ruleset *, 1721 const struct pf_rule *, struct pfioc_rule *); 1722 void pf_anchor_remove(struct pf_rule *); 1723 void pf_remove_if_empty_ruleset(struct pf_ruleset *); 1724 struct pf_ruleset *pf_find_ruleset(const char *); 1725 struct pf_ruleset *pf_find_or_create_ruleset(const char *); 1726 void pf_rs_initialize(void); 1727 1728 /* The fingerprint functions can be linked into userland programs (tcpdump) */ 1729 int pf_osfp_add(struct pf_osfp_ioctl *); 1730 #ifdef _KERNEL 1731 struct pf_osfp_enlist * 1732 pf_osfp_fingerprint(struct pf_pdesc *, struct mbuf *, int, 1733 const struct tcphdr *); 1734 #endif /* _KERNEL */ 1735 void pf_osfp_flush(void); 1736 int pf_osfp_get(struct pf_osfp_ioctl *); 1737 int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t); 1738 1739 #ifdef _KERNEL 1740 void pf_print_host(struct pf_addr *, u_int16_t, u_int8_t); 1741 1742 void pf_step_into_anchor(struct pf_anchor_stackframe *, int *, 1743 struct pf_ruleset **, int, struct pf_rule **, 1744 struct pf_rule **, int *); 1745 int pf_step_out_of_anchor(struct pf_anchor_stackframe *, int *, 1746 struct pf_ruleset **, int, struct pf_rule **, 1747 struct pf_rule **, int *); 1748 1749 int pf_map_addr(u_int8_t, struct pf_rule *, 1750 struct pf_addr *, struct pf_addr *, 1751 struct pf_addr *, struct pf_src_node **); 1752 struct pf_rule *pf_get_translation(struct pf_pdesc *, struct mbuf *, 1753 int, int, struct pfi_kif *, struct pf_src_node **, 1754 struct pf_state_key **, struct pf_state_key **, 1755 struct pf_addr *, struct pf_addr *, 1756 uint16_t, uint16_t, struct pf_anchor_stackframe *); 1757 1758 struct pf_state_key *pf_state_key_setup(struct pf_pdesc *, struct pf_addr *, 1759 struct pf_addr *, u_int16_t, u_int16_t); 1760 struct pf_state_key *pf_state_key_clone(struct pf_state_key *); 1761 #endif /* _KERNEL */ 1762 1763 #endif /* _NET_PFVAR_H_ */ 1764