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/cpuset.h> 42 #include <sys/malloc.h> 43 #include <sys/refcount.h> 44 #include <sys/sysctl.h> 45 #include <sys/lock.h> 46 #include <sys/rmlock.h> 47 #include <sys/tree.h> 48 #include <vm/uma.h> 49 50 #include <net/radix.h> 51 #include <netinet/in.h> 52 53 #include <netpfil/pf/pf.h> 54 #include <netpfil/pf/pf_altq.h> 55 #include <netpfil/pf/pf_mtag.h> 56 57 struct pf_addr { 58 union { 59 struct in_addr v4; 60 struct in6_addr v6; 61 u_int8_t addr8[16]; 62 u_int16_t addr16[8]; 63 u_int32_t addr32[4]; 64 } pfa; /* 128-bit address */ 65 #define v4 pfa.v4 66 #define v6 pfa.v6 67 #define addr8 pfa.addr8 68 #define addr16 pfa.addr16 69 #define addr32 pfa.addr32 70 }; 71 72 #define PFI_AFLAG_NETWORK 0x01 73 #define PFI_AFLAG_BROADCAST 0x02 74 #define PFI_AFLAG_PEER 0x04 75 #define PFI_AFLAG_MODEMASK 0x07 76 #define PFI_AFLAG_NOALIAS 0x08 77 78 struct pf_addr_wrap { 79 union { 80 struct { 81 struct pf_addr addr; 82 struct pf_addr mask; 83 } a; 84 char ifname[IFNAMSIZ]; 85 char tblname[PF_TABLE_NAME_SIZE]; 86 } v; 87 union { 88 struct pfi_dynaddr *dyn; 89 struct pfr_ktable *tbl; 90 int dyncnt; 91 int tblcnt; 92 } p; 93 u_int8_t type; /* PF_ADDR_* */ 94 u_int8_t iflags; /* PFI_AFLAG_* */ 95 }; 96 97 #ifdef _KERNEL 98 99 SYSCTL_DECL(_net_pf); 100 MALLOC_DECLARE(M_PFHASH); 101 102 struct pfi_dynaddr { 103 TAILQ_ENTRY(pfi_dynaddr) entry; 104 struct pf_addr pfid_addr4; 105 struct pf_addr pfid_mask4; 106 struct pf_addr pfid_addr6; 107 struct pf_addr pfid_mask6; 108 struct pfr_ktable *pfid_kt; 109 struct pfi_kif *pfid_kif; 110 int pfid_net; /* mask or 128 */ 111 int pfid_acnt4; /* address count IPv4 */ 112 int pfid_acnt6; /* address count IPv6 */ 113 sa_family_t pfid_af; /* rule af */ 114 u_int8_t pfid_iflags; /* PFI_AFLAG_* */ 115 }; 116 117 /* 118 * Address manipulation macros 119 */ 120 #define HTONL(x) (x) = htonl((__uint32_t)(x)) 121 #define HTONS(x) (x) = htons((__uint16_t)(x)) 122 #define NTOHL(x) (x) = ntohl((__uint32_t)(x)) 123 #define NTOHS(x) (x) = ntohs((__uint16_t)(x)) 124 125 #define PF_NAME "pf" 126 127 #define PF_HASHROW_ASSERT(h) mtx_assert(&(h)->lock, MA_OWNED) 128 #define PF_HASHROW_LOCK(h) mtx_lock(&(h)->lock) 129 #define PF_HASHROW_UNLOCK(h) mtx_unlock(&(h)->lock) 130 131 #define PF_STATE_LOCK(s) \ 132 do { \ 133 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(s)]; \ 134 PF_HASHROW_LOCK(_ih); \ 135 } while (0) 136 137 #define PF_STATE_UNLOCK(s) \ 138 do { \ 139 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH((s))]; \ 140 PF_HASHROW_UNLOCK(_ih); \ 141 } while (0) 142 143 #ifdef INVARIANTS 144 #define PF_STATE_LOCK_ASSERT(s) \ 145 do { \ 146 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(s)]; \ 147 PF_HASHROW_ASSERT(_ih); \ 148 } while (0) 149 #else /* !INVARIANTS */ 150 #define PF_STATE_LOCK_ASSERT(s) do {} while (0) 151 #endif /* INVARIANTS */ 152 153 extern struct mtx pf_unlnkdrules_mtx; 154 #define PF_UNLNKDRULES_LOCK() mtx_lock(&pf_unlnkdrules_mtx) 155 #define PF_UNLNKDRULES_UNLOCK() mtx_unlock(&pf_unlnkdrules_mtx) 156 157 extern struct rmlock pf_rules_lock; 158 #define PF_RULES_RLOCK_TRACKER struct rm_priotracker _pf_rules_tracker 159 #define PF_RULES_RLOCK() rm_rlock(&pf_rules_lock, &_pf_rules_tracker) 160 #define PF_RULES_RUNLOCK() rm_runlock(&pf_rules_lock, &_pf_rules_tracker) 161 #define PF_RULES_WLOCK() rm_wlock(&pf_rules_lock) 162 #define PF_RULES_WUNLOCK() rm_wunlock(&pf_rules_lock) 163 #define PF_RULES_ASSERT() rm_assert(&pf_rules_lock, RA_LOCKED) 164 #define PF_RULES_RASSERT() rm_assert(&pf_rules_lock, RA_RLOCKED) 165 #define PF_RULES_WASSERT() rm_assert(&pf_rules_lock, RA_WLOCKED) 166 167 extern struct sx pf_end_lock; 168 169 #define PF_MODVER 1 170 #define PFLOG_MODVER 1 171 #define PFSYNC_MODVER 1 172 173 #define PFLOG_MINVER 1 174 #define PFLOG_PREFVER PFLOG_MODVER 175 #define PFLOG_MAXVER 1 176 #define PFSYNC_MINVER 1 177 #define PFSYNC_PREFVER PFSYNC_MODVER 178 #define PFSYNC_MAXVER 1 179 180 #ifdef INET 181 #ifndef INET6 182 #define PF_INET_ONLY 183 #endif /* ! INET6 */ 184 #endif /* INET */ 185 186 #ifdef INET6 187 #ifndef INET 188 #define PF_INET6_ONLY 189 #endif /* ! INET */ 190 #endif /* INET6 */ 191 192 #ifdef INET 193 #ifdef INET6 194 #define PF_INET_INET6 195 #endif /* INET6 */ 196 #endif /* INET */ 197 198 #else 199 200 #define PF_INET_INET6 201 202 #endif /* _KERNEL */ 203 204 /* Both IPv4 and IPv6 */ 205 #ifdef PF_INET_INET6 206 207 #define PF_AEQ(a, b, c) \ 208 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \ 209 (c == AF_INET6 && (a)->addr32[3] == (b)->addr32[3] && \ 210 (a)->addr32[2] == (b)->addr32[2] && \ 211 (a)->addr32[1] == (b)->addr32[1] && \ 212 (a)->addr32[0] == (b)->addr32[0])) \ 213 214 #define PF_ANEQ(a, b, c) \ 215 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \ 216 (c == AF_INET6 && ((a)->addr32[0] != (b)->addr32[0] || \ 217 (a)->addr32[1] != (b)->addr32[1] || \ 218 (a)->addr32[2] != (b)->addr32[2] || \ 219 (a)->addr32[3] != (b)->addr32[3]))) \ 220 221 #define PF_AZERO(a, c) \ 222 ((c == AF_INET && !(a)->addr32[0]) || \ 223 (c == AF_INET6 && !(a)->addr32[0] && !(a)->addr32[1] && \ 224 !(a)->addr32[2] && !(a)->addr32[3] )) \ 225 226 #define PF_MATCHA(n, a, m, b, f) \ 227 pf_match_addr(n, a, m, b, f) 228 229 #define PF_ACPY(a, b, f) \ 230 pf_addrcpy(a, b, f) 231 232 #define PF_AINC(a, f) \ 233 pf_addr_inc(a, f) 234 235 #define PF_POOLMASK(a, b, c, d, f) \ 236 pf_poolmask(a, b, c, d, f) 237 238 #else 239 240 /* Just IPv6 */ 241 242 #ifdef PF_INET6_ONLY 243 244 #define PF_AEQ(a, b, c) \ 245 ((a)->addr32[3] == (b)->addr32[3] && \ 246 (a)->addr32[2] == (b)->addr32[2] && \ 247 (a)->addr32[1] == (b)->addr32[1] && \ 248 (a)->addr32[0] == (b)->addr32[0]) \ 249 250 #define PF_ANEQ(a, b, c) \ 251 ((a)->addr32[3] != (b)->addr32[3] || \ 252 (a)->addr32[2] != (b)->addr32[2] || \ 253 (a)->addr32[1] != (b)->addr32[1] || \ 254 (a)->addr32[0] != (b)->addr32[0]) \ 255 256 #define PF_AZERO(a, c) \ 257 (!(a)->addr32[0] && \ 258 !(a)->addr32[1] && \ 259 !(a)->addr32[2] && \ 260 !(a)->addr32[3] ) \ 261 262 #define PF_MATCHA(n, a, m, b, f) \ 263 pf_match_addr(n, a, m, b, f) 264 265 #define PF_ACPY(a, b, f) \ 266 pf_addrcpy(a, b, f) 267 268 #define PF_AINC(a, f) \ 269 pf_addr_inc(a, f) 270 271 #define PF_POOLMASK(a, b, c, d, f) \ 272 pf_poolmask(a, b, c, d, f) 273 274 #else 275 276 /* Just IPv4 */ 277 #ifdef PF_INET_ONLY 278 279 #define PF_AEQ(a, b, c) \ 280 ((a)->addr32[0] == (b)->addr32[0]) 281 282 #define PF_ANEQ(a, b, c) \ 283 ((a)->addr32[0] != (b)->addr32[0]) 284 285 #define PF_AZERO(a, c) \ 286 (!(a)->addr32[0]) 287 288 #define PF_MATCHA(n, a, m, b, f) \ 289 pf_match_addr(n, a, m, b, f) 290 291 #define PF_ACPY(a, b, f) \ 292 (a)->v4.s_addr = (b)->v4.s_addr 293 294 #define PF_AINC(a, f) \ 295 do { \ 296 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \ 297 } while (0) 298 299 #define PF_POOLMASK(a, b, c, d, f) \ 300 do { \ 301 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \ 302 (((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \ 303 } while (0) 304 305 #endif /* PF_INET_ONLY */ 306 #endif /* PF_INET6_ONLY */ 307 #endif /* PF_INET_INET6 */ 308 309 /* 310 * XXX callers not FIB-aware in our version of pf yet. 311 * OpenBSD fixed it later it seems, 2010/05/07 13:33:16 claudio. 312 */ 313 #define PF_MISMATCHAW(aw, x, af, neg, ifp, rtid) \ 314 ( \ 315 (((aw)->type == PF_ADDR_NOROUTE && \ 316 pf_routable((x), (af), NULL, (rtid))) || \ 317 (((aw)->type == PF_ADDR_URPFFAILED && (ifp) != NULL && \ 318 pf_routable((x), (af), (ifp), (rtid))) || \ 319 ((aw)->type == PF_ADDR_TABLE && \ 320 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \ 321 ((aw)->type == PF_ADDR_DYNIFTL && \ 322 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \ 323 ((aw)->type == PF_ADDR_RANGE && \ 324 !pf_match_addr_range(&(aw)->v.a.addr, \ 325 &(aw)->v.a.mask, (x), (af))) || \ 326 ((aw)->type == PF_ADDR_ADDRMASK && \ 327 !PF_AZERO(&(aw)->v.a.mask, (af)) && \ 328 !PF_MATCHA(0, &(aw)->v.a.addr, \ 329 &(aw)->v.a.mask, (x), (af))))) != \ 330 (neg) \ 331 ) 332 333 334 struct pf_rule_uid { 335 uid_t uid[2]; 336 u_int8_t op; 337 }; 338 339 struct pf_rule_gid { 340 uid_t gid[2]; 341 u_int8_t op; 342 }; 343 344 struct pf_rule_addr { 345 struct pf_addr_wrap addr; 346 u_int16_t port[2]; 347 u_int8_t neg; 348 u_int8_t port_op; 349 }; 350 351 struct pf_pooladdr { 352 struct pf_addr_wrap addr; 353 TAILQ_ENTRY(pf_pooladdr) entries; 354 char ifname[IFNAMSIZ]; 355 struct pfi_kif *kif; 356 }; 357 358 TAILQ_HEAD(pf_palist, pf_pooladdr); 359 360 struct pf_poolhashkey { 361 union { 362 u_int8_t key8[16]; 363 u_int16_t key16[8]; 364 u_int32_t key32[4]; 365 } pfk; /* 128-bit hash key */ 366 #define key8 pfk.key8 367 #define key16 pfk.key16 368 #define key32 pfk.key32 369 }; 370 371 struct pf_pool { 372 struct pf_palist list; 373 struct pf_pooladdr *cur; 374 struct pf_poolhashkey key; 375 struct pf_addr counter; 376 int tblidx; 377 u_int16_t proxy_port[2]; 378 u_int8_t opts; 379 }; 380 381 382 /* A packed Operating System description for fingerprinting */ 383 typedef u_int32_t pf_osfp_t; 384 #define PF_OSFP_ANY ((pf_osfp_t)0) 385 #define PF_OSFP_UNKNOWN ((pf_osfp_t)-1) 386 #define PF_OSFP_NOMATCH ((pf_osfp_t)-2) 387 388 struct pf_osfp_entry { 389 SLIST_ENTRY(pf_osfp_entry) fp_entry; 390 pf_osfp_t fp_os; 391 int fp_enflags; 392 #define PF_OSFP_EXPANDED 0x001 /* expanded entry */ 393 #define PF_OSFP_GENERIC 0x002 /* generic signature */ 394 #define PF_OSFP_NODETAIL 0x004 /* no p0f details */ 395 #define PF_OSFP_LEN 32 396 char fp_class_nm[PF_OSFP_LEN]; 397 char fp_version_nm[PF_OSFP_LEN]; 398 char fp_subtype_nm[PF_OSFP_LEN]; 399 }; 400 #define PF_OSFP_ENTRY_EQ(a, b) \ 401 ((a)->fp_os == (b)->fp_os && \ 402 memcmp((a)->fp_class_nm, (b)->fp_class_nm, PF_OSFP_LEN) == 0 && \ 403 memcmp((a)->fp_version_nm, (b)->fp_version_nm, PF_OSFP_LEN) == 0 && \ 404 memcmp((a)->fp_subtype_nm, (b)->fp_subtype_nm, PF_OSFP_LEN) == 0) 405 406 /* handle pf_osfp_t packing */ 407 #define _FP_RESERVED_BIT 1 /* For the special negative #defines */ 408 #define _FP_UNUSED_BITS 1 409 #define _FP_CLASS_BITS 10 /* OS Class (Windows, Linux) */ 410 #define _FP_VERSION_BITS 10 /* OS version (95, 98, NT, 2.4.54, 3.2) */ 411 #define _FP_SUBTYPE_BITS 10 /* patch level (NT SP4, SP3, ECN patch) */ 412 #define PF_OSFP_UNPACK(osfp, class, version, subtype) do { \ 413 (class) = ((osfp) >> (_FP_VERSION_BITS+_FP_SUBTYPE_BITS)) & \ 414 ((1 << _FP_CLASS_BITS) - 1); \ 415 (version) = ((osfp) >> _FP_SUBTYPE_BITS) & \ 416 ((1 << _FP_VERSION_BITS) - 1);\ 417 (subtype) = (osfp) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 418 } while(0) 419 #define PF_OSFP_PACK(osfp, class, version, subtype) do { \ 420 (osfp) = ((class) & ((1 << _FP_CLASS_BITS) - 1)) << (_FP_VERSION_BITS \ 421 + _FP_SUBTYPE_BITS); \ 422 (osfp) |= ((version) & ((1 << _FP_VERSION_BITS) - 1)) << \ 423 _FP_SUBTYPE_BITS; \ 424 (osfp) |= (subtype) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 425 } while(0) 426 427 /* the fingerprint of an OSes TCP SYN packet */ 428 typedef u_int64_t pf_tcpopts_t; 429 struct pf_os_fingerprint { 430 SLIST_HEAD(pf_osfp_enlist, pf_osfp_entry) fp_oses; /* list of matches */ 431 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 432 u_int16_t fp_wsize; /* TCP window size */ 433 u_int16_t fp_psize; /* ip->ip_len */ 434 u_int16_t fp_mss; /* TCP MSS */ 435 u_int16_t fp_flags; 436 #define PF_OSFP_WSIZE_MOD 0x0001 /* Window modulus */ 437 #define PF_OSFP_WSIZE_DC 0x0002 /* Window don't care */ 438 #define PF_OSFP_WSIZE_MSS 0x0004 /* Window multiple of MSS */ 439 #define PF_OSFP_WSIZE_MTU 0x0008 /* Window multiple of MTU */ 440 #define PF_OSFP_PSIZE_MOD 0x0010 /* packet size modulus */ 441 #define PF_OSFP_PSIZE_DC 0x0020 /* packet size don't care */ 442 #define PF_OSFP_WSCALE 0x0040 /* TCP window scaling */ 443 #define PF_OSFP_WSCALE_MOD 0x0080 /* TCP window scale modulus */ 444 #define PF_OSFP_WSCALE_DC 0x0100 /* TCP window scale dont-care */ 445 #define PF_OSFP_MSS 0x0200 /* TCP MSS */ 446 #define PF_OSFP_MSS_MOD 0x0400 /* TCP MSS modulus */ 447 #define PF_OSFP_MSS_DC 0x0800 /* TCP MSS dont-care */ 448 #define PF_OSFP_DF 0x1000 /* IPv4 don't fragment bit */ 449 #define PF_OSFP_TS0 0x2000 /* Zero timestamp */ 450 #define PF_OSFP_INET6 0x4000 /* IPv6 */ 451 u_int8_t fp_optcnt; /* TCP option count */ 452 u_int8_t fp_wscale; /* TCP window scaling */ 453 u_int8_t fp_ttl; /* IPv4 TTL */ 454 #define PF_OSFP_MAXTTL_OFFSET 40 455 /* TCP options packing */ 456 #define PF_OSFP_TCPOPT_NOP 0x0 /* TCP NOP option */ 457 #define PF_OSFP_TCPOPT_WSCALE 0x1 /* TCP window scaling option */ 458 #define PF_OSFP_TCPOPT_MSS 0x2 /* TCP max segment size opt */ 459 #define PF_OSFP_TCPOPT_SACK 0x3 /* TCP SACK OK option */ 460 #define PF_OSFP_TCPOPT_TS 0x4 /* TCP timestamp option */ 461 #define PF_OSFP_TCPOPT_BITS 3 /* bits used by each option */ 462 #define PF_OSFP_MAX_OPTS \ 463 (sizeof(((struct pf_os_fingerprint *)0)->fp_tcpopts) * 8) \ 464 / PF_OSFP_TCPOPT_BITS 465 466 SLIST_ENTRY(pf_os_fingerprint) fp_next; 467 }; 468 469 struct pf_osfp_ioctl { 470 struct pf_osfp_entry fp_os; 471 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 472 u_int16_t fp_wsize; /* TCP window size */ 473 u_int16_t fp_psize; /* ip->ip_len */ 474 u_int16_t fp_mss; /* TCP MSS */ 475 u_int16_t fp_flags; 476 u_int8_t fp_optcnt; /* TCP option count */ 477 u_int8_t fp_wscale; /* TCP window scaling */ 478 u_int8_t fp_ttl; /* IPv4 TTL */ 479 480 int fp_getnum; /* DIOCOSFPGET number */ 481 }; 482 483 484 union pf_rule_ptr { 485 struct pf_rule *ptr; 486 u_int32_t nr; 487 }; 488 489 #define PF_ANCHOR_NAME_SIZE 64 490 491 struct pf_rule { 492 struct pf_rule_addr src; 493 struct pf_rule_addr dst; 494 #define PF_SKIP_IFP 0 495 #define PF_SKIP_DIR 1 496 #define PF_SKIP_AF 2 497 #define PF_SKIP_PROTO 3 498 #define PF_SKIP_SRC_ADDR 4 499 #define PF_SKIP_SRC_PORT 5 500 #define PF_SKIP_DST_ADDR 6 501 #define PF_SKIP_DST_PORT 7 502 #define PF_SKIP_COUNT 8 503 union pf_rule_ptr skip[PF_SKIP_COUNT]; 504 #define PF_RULE_LABEL_SIZE 64 505 char label[PF_RULE_LABEL_SIZE]; 506 char ifname[IFNAMSIZ]; 507 char qname[PF_QNAME_SIZE]; 508 char pqname[PF_QNAME_SIZE]; 509 #define PF_TAG_NAME_SIZE 64 510 char tagname[PF_TAG_NAME_SIZE]; 511 char match_tagname[PF_TAG_NAME_SIZE]; 512 513 char overload_tblname[PF_TABLE_NAME_SIZE]; 514 515 TAILQ_ENTRY(pf_rule) entries; 516 struct pf_pool rpool; 517 518 u_int64_t evaluations; 519 u_int64_t packets[2]; 520 u_int64_t bytes[2]; 521 522 struct pfi_kif *kif; 523 struct pf_anchor *anchor; 524 struct pfr_ktable *overload_tbl; 525 526 pf_osfp_t os_fingerprint; 527 528 int rtableid; 529 u_int32_t timeout[PFTM_MAX]; 530 u_int32_t max_states; 531 u_int32_t max_src_nodes; 532 u_int32_t max_src_states; 533 u_int32_t max_src_conn; 534 struct { 535 u_int32_t limit; 536 u_int32_t seconds; 537 } max_src_conn_rate; 538 u_int32_t qid; 539 u_int32_t pqid; 540 u_int32_t rt_listid; 541 u_int32_t nr; 542 u_int32_t prob; 543 uid_t cuid; 544 pid_t cpid; 545 546 counter_u64_t states_cur; 547 counter_u64_t states_tot; 548 counter_u64_t src_nodes; 549 550 u_int16_t return_icmp; 551 u_int16_t return_icmp6; 552 u_int16_t max_mss; 553 u_int16_t tag; 554 u_int16_t match_tag; 555 u_int16_t scrub_flags; 556 557 struct pf_rule_uid uid; 558 struct pf_rule_gid gid; 559 560 u_int32_t rule_flag; 561 u_int8_t action; 562 u_int8_t direction; 563 u_int8_t log; 564 u_int8_t logif; 565 u_int8_t quick; 566 u_int8_t ifnot; 567 u_int8_t match_tag_not; 568 u_int8_t natpass; 569 570 #define PF_STATE_NORMAL 0x1 571 #define PF_STATE_MODULATE 0x2 572 #define PF_STATE_SYNPROXY 0x3 573 u_int8_t keep_state; 574 sa_family_t af; 575 u_int8_t proto; 576 u_int8_t type; 577 u_int8_t code; 578 u_int8_t flags; 579 u_int8_t flagset; 580 u_int8_t min_ttl; 581 u_int8_t allow_opts; 582 u_int8_t rt; 583 u_int8_t return_ttl; 584 u_int8_t tos; 585 u_int8_t set_tos; 586 u_int8_t anchor_relative; 587 u_int8_t anchor_wildcard; 588 589 #define PF_FLUSH 0x01 590 #define PF_FLUSH_GLOBAL 0x02 591 u_int8_t flush; 592 #define PF_PRIO_ZERO 0xff /* match "prio 0" packets */ 593 #define PF_PRIO_MAX 7 594 u_int8_t prio; 595 u_int8_t set_prio[2]; 596 597 struct { 598 struct pf_addr addr; 599 u_int16_t port; 600 } divert; 601 602 uint64_t u_states_cur; 603 uint64_t u_states_tot; 604 uint64_t u_src_nodes; 605 }; 606 607 /* rule flags */ 608 #define PFRULE_DROP 0x0000 609 #define PFRULE_RETURNRST 0x0001 610 #define PFRULE_FRAGMENT 0x0002 611 #define PFRULE_RETURNICMP 0x0004 612 #define PFRULE_RETURN 0x0008 613 #define PFRULE_NOSYNC 0x0010 614 #define PFRULE_SRCTRACK 0x0020 /* track source states */ 615 #define PFRULE_RULESRCTRACK 0x0040 /* per rule */ 616 #define PFRULE_REFS 0x0080 /* rule has references */ 617 618 /* scrub flags */ 619 #define PFRULE_NODF 0x0100 620 #define PFRULE_RANDOMID 0x0800 621 #define PFRULE_REASSEMBLE_TCP 0x1000 622 #define PFRULE_SET_TOS 0x2000 623 624 /* rule flags again */ 625 #define PFRULE_IFBOUND 0x00010000 /* if-bound */ 626 #define PFRULE_STATESLOPPY 0x00020000 /* sloppy state tracking */ 627 628 #define PFSTATE_HIWAT 100000 /* default state table size */ 629 #define PFSTATE_ADAPT_START 60000 /* default adaptive timeout start */ 630 #define PFSTATE_ADAPT_END 120000 /* default adaptive timeout end */ 631 632 633 struct pf_threshold { 634 u_int32_t limit; 635 #define PF_THRESHOLD_MULT 1000 636 #define PF_THRESHOLD_MAX 0xffffffff / PF_THRESHOLD_MULT 637 u_int32_t seconds; 638 u_int32_t count; 639 u_int32_t last; 640 }; 641 642 struct pf_src_node { 643 LIST_ENTRY(pf_src_node) entry; 644 struct pf_addr addr; 645 struct pf_addr raddr; 646 union pf_rule_ptr rule; 647 struct pfi_kif *kif; 648 u_int64_t bytes[2]; 649 u_int64_t packets[2]; 650 u_int32_t states; 651 u_int32_t conn; 652 struct pf_threshold conn_rate; 653 u_int32_t creation; 654 u_int32_t expire; 655 sa_family_t af; 656 u_int8_t ruletype; 657 }; 658 659 #define PFSNODE_HIWAT 10000 /* default source node table size */ 660 661 struct pf_state_scrub { 662 struct timeval pfss_last; /* time received last packet */ 663 u_int32_t pfss_tsecr; /* last echoed timestamp */ 664 u_int32_t pfss_tsval; /* largest timestamp */ 665 u_int32_t pfss_tsval0; /* original timestamp */ 666 u_int16_t pfss_flags; 667 #define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */ 668 #define PFSS_PAWS 0x0010 /* stricter PAWS checks */ 669 #define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */ 670 #define PFSS_DATA_TS 0x0040 /* timestamp on data packets */ 671 #define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */ 672 u_int8_t pfss_ttl; /* stashed TTL */ 673 u_int8_t pad; 674 u_int32_t pfss_ts_mod; /* timestamp modulation */ 675 }; 676 677 struct pf_state_host { 678 struct pf_addr addr; 679 u_int16_t port; 680 u_int16_t pad; 681 }; 682 683 struct pf_state_peer { 684 struct pf_state_scrub *scrub; /* state is scrubbed */ 685 u_int32_t seqlo; /* Max sequence number sent */ 686 u_int32_t seqhi; /* Max the other end ACKd + win */ 687 u_int32_t seqdiff; /* Sequence number modulator */ 688 u_int16_t max_win; /* largest window (pre scaling) */ 689 u_int16_t mss; /* Maximum segment size option */ 690 u_int8_t state; /* active state level */ 691 u_int8_t wscale; /* window scaling factor */ 692 u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */ 693 u_int8_t pad[1]; 694 }; 695 696 /* Keep synced with struct pf_state_key. */ 697 struct pf_state_key_cmp { 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 }; 704 705 struct pf_state_key { 706 struct pf_addr addr[2]; 707 u_int16_t port[2]; 708 sa_family_t af; 709 u_int8_t proto; 710 u_int8_t pad[2]; 711 712 LIST_ENTRY(pf_state_key) entry; 713 TAILQ_HEAD(, pf_state) states[2]; 714 }; 715 716 /* Keep synced with struct pf_state. */ 717 struct pf_state_cmp { 718 u_int64_t id; 719 u_int32_t creatorid; 720 u_int8_t direction; 721 u_int8_t pad[3]; 722 }; 723 724 struct pf_state { 725 u_int64_t id; 726 u_int32_t creatorid; 727 u_int8_t direction; 728 u_int8_t pad[3]; 729 730 u_int refs; 731 TAILQ_ENTRY(pf_state) sync_list; 732 TAILQ_ENTRY(pf_state) key_list[2]; 733 LIST_ENTRY(pf_state) entry; 734 struct pf_state_peer src; 735 struct pf_state_peer dst; 736 union pf_rule_ptr rule; 737 union pf_rule_ptr anchor; 738 union pf_rule_ptr nat_rule; 739 struct pf_addr rt_addr; 740 struct pf_state_key *key[2]; /* addresses stack and wire */ 741 struct pfi_kif *kif; 742 struct pfi_kif *rt_kif; 743 struct pf_src_node *src_node; 744 struct pf_src_node *nat_src_node; 745 u_int64_t packets[2]; 746 u_int64_t bytes[2]; 747 u_int32_t creation; 748 u_int32_t expire; 749 u_int32_t pfsync_time; 750 u_int16_t tag; 751 u_int8_t log; 752 u_int8_t state_flags; 753 #define PFSTATE_ALLOWOPTS 0x01 754 #define PFSTATE_SLOPPY 0x02 755 /* was PFSTATE_PFLOW 0x04 */ 756 #define PFSTATE_NOSYNC 0x08 757 #define PFSTATE_ACK 0x10 758 #define PFSTATE_SETPRIO 0x0200 759 #define PFSTATE_SETMASK (PFSTATE_SETPRIO) 760 u_int8_t timeout; 761 u_int8_t sync_state; /* PFSYNC_S_x */ 762 763 /* XXX */ 764 u_int8_t sync_updates; 765 u_int8_t _tail[3]; 766 }; 767 768 /* 769 * Unified state structures for pulling states out of the kernel 770 * used by pfsync(4) and the pf(4) ioctl. 771 */ 772 struct pfsync_state_scrub { 773 u_int16_t pfss_flags; 774 u_int8_t pfss_ttl; /* stashed TTL */ 775 #define PFSYNC_SCRUB_FLAG_VALID 0x01 776 u_int8_t scrub_flag; 777 u_int32_t pfss_ts_mod; /* timestamp modulation */ 778 } __packed; 779 780 struct pfsync_state_peer { 781 struct pfsync_state_scrub scrub; /* state is scrubbed */ 782 u_int32_t seqlo; /* Max sequence number sent */ 783 u_int32_t seqhi; /* Max the other end ACKd + win */ 784 u_int32_t seqdiff; /* Sequence number modulator */ 785 u_int16_t max_win; /* largest window (pre scaling) */ 786 u_int16_t mss; /* Maximum segment size option */ 787 u_int8_t state; /* active state level */ 788 u_int8_t wscale; /* window scaling factor */ 789 u_int8_t pad[6]; 790 } __packed; 791 792 struct pfsync_state_key { 793 struct pf_addr addr[2]; 794 u_int16_t port[2]; 795 }; 796 797 struct pfsync_state { 798 u_int64_t id; 799 char ifname[IFNAMSIZ]; 800 struct pfsync_state_key key[2]; 801 struct pfsync_state_peer src; 802 struct pfsync_state_peer dst; 803 struct pf_addr rt_addr; 804 u_int32_t rule; 805 u_int32_t anchor; 806 u_int32_t nat_rule; 807 u_int32_t creation; 808 u_int32_t expire; 809 u_int32_t packets[2][2]; 810 u_int32_t bytes[2][2]; 811 u_int32_t creatorid; 812 sa_family_t af; 813 u_int8_t proto; 814 u_int8_t direction; 815 u_int8_t __spare[2]; 816 u_int8_t log; 817 u_int8_t state_flags; 818 u_int8_t timeout; 819 u_int8_t sync_flags; 820 u_int8_t updates; 821 } __packed; 822 823 #ifdef _KERNEL 824 /* pfsync */ 825 typedef int pfsync_state_import_t(struct pfsync_state *, u_int8_t); 826 typedef void pfsync_insert_state_t(struct pf_state *); 827 typedef void pfsync_update_state_t(struct pf_state *); 828 typedef void pfsync_delete_state_t(struct pf_state *); 829 typedef void pfsync_clear_states_t(u_int32_t, const char *); 830 typedef int pfsync_defer_t(struct pf_state *, struct mbuf *); 831 typedef void pfsync_detach_ifnet_t(struct ifnet *); 832 833 VNET_DECLARE(pfsync_state_import_t *, pfsync_state_import_ptr); 834 #define V_pfsync_state_import_ptr VNET(pfsync_state_import_ptr) 835 VNET_DECLARE(pfsync_insert_state_t *, pfsync_insert_state_ptr); 836 #define V_pfsync_insert_state_ptr VNET(pfsync_insert_state_ptr) 837 VNET_DECLARE(pfsync_update_state_t *, pfsync_update_state_ptr); 838 #define V_pfsync_update_state_ptr VNET(pfsync_update_state_ptr) 839 VNET_DECLARE(pfsync_delete_state_t *, pfsync_delete_state_ptr); 840 #define V_pfsync_delete_state_ptr VNET(pfsync_delete_state_ptr) 841 VNET_DECLARE(pfsync_clear_states_t *, pfsync_clear_states_ptr); 842 #define V_pfsync_clear_states_ptr VNET(pfsync_clear_states_ptr) 843 VNET_DECLARE(pfsync_defer_t *, pfsync_defer_ptr); 844 #define V_pfsync_defer_ptr VNET(pfsync_defer_ptr) 845 extern pfsync_detach_ifnet_t *pfsync_detach_ifnet_ptr; 846 847 void pfsync_state_export(struct pfsync_state *, 848 struct pf_state *); 849 850 /* pflog */ 851 struct pf_ruleset; 852 struct pf_pdesc; 853 typedef int pflog_packet_t(struct pfi_kif *, struct mbuf *, sa_family_t, 854 u_int8_t, u_int8_t, struct pf_rule *, struct pf_rule *, 855 struct pf_ruleset *, struct pf_pdesc *, int); 856 extern pflog_packet_t *pflog_packet_ptr; 857 858 #endif /* _KERNEL */ 859 860 #define PFSYNC_FLAG_SRCNODE 0x04 861 #define PFSYNC_FLAG_NATSRCNODE 0x08 862 863 /* for copies to/from network byte order */ 864 /* ioctl interface also uses network byte order */ 865 #define pf_state_peer_hton(s,d) do { \ 866 (d)->seqlo = htonl((s)->seqlo); \ 867 (d)->seqhi = htonl((s)->seqhi); \ 868 (d)->seqdiff = htonl((s)->seqdiff); \ 869 (d)->max_win = htons((s)->max_win); \ 870 (d)->mss = htons((s)->mss); \ 871 (d)->state = (s)->state; \ 872 (d)->wscale = (s)->wscale; \ 873 if ((s)->scrub) { \ 874 (d)->scrub.pfss_flags = \ 875 htons((s)->scrub->pfss_flags & PFSS_TIMESTAMP); \ 876 (d)->scrub.pfss_ttl = (s)->scrub->pfss_ttl; \ 877 (d)->scrub.pfss_ts_mod = htonl((s)->scrub->pfss_ts_mod);\ 878 (d)->scrub.scrub_flag = PFSYNC_SCRUB_FLAG_VALID; \ 879 } \ 880 } while (0) 881 882 #define pf_state_peer_ntoh(s,d) do { \ 883 (d)->seqlo = ntohl((s)->seqlo); \ 884 (d)->seqhi = ntohl((s)->seqhi); \ 885 (d)->seqdiff = ntohl((s)->seqdiff); \ 886 (d)->max_win = ntohs((s)->max_win); \ 887 (d)->mss = ntohs((s)->mss); \ 888 (d)->state = (s)->state; \ 889 (d)->wscale = (s)->wscale; \ 890 if ((s)->scrub.scrub_flag == PFSYNC_SCRUB_FLAG_VALID && \ 891 (d)->scrub != NULL) { \ 892 (d)->scrub->pfss_flags = \ 893 ntohs((s)->scrub.pfss_flags) & PFSS_TIMESTAMP; \ 894 (d)->scrub->pfss_ttl = (s)->scrub.pfss_ttl; \ 895 (d)->scrub->pfss_ts_mod = ntohl((s)->scrub.pfss_ts_mod);\ 896 } \ 897 } while (0) 898 899 #define pf_state_counter_hton(s,d) do { \ 900 d[0] = htonl((s>>32)&0xffffffff); \ 901 d[1] = htonl(s&0xffffffff); \ 902 } while (0) 903 904 #define pf_state_counter_from_pfsync(s) \ 905 (((u_int64_t)(s[0])<<32) | (u_int64_t)(s[1])) 906 907 #define pf_state_counter_ntoh(s,d) do { \ 908 d = ntohl(s[0]); \ 909 d = d<<32; \ 910 d += ntohl(s[1]); \ 911 } while (0) 912 913 TAILQ_HEAD(pf_rulequeue, pf_rule); 914 915 struct pf_anchor; 916 917 struct pf_ruleset { 918 struct { 919 struct pf_rulequeue queues[2]; 920 struct { 921 struct pf_rulequeue *ptr; 922 struct pf_rule **ptr_array; 923 u_int32_t rcount; 924 u_int32_t ticket; 925 int open; 926 } active, inactive; 927 } rules[PF_RULESET_MAX]; 928 struct pf_anchor *anchor; 929 u_int32_t tticket; 930 int tables; 931 int topen; 932 }; 933 934 RB_HEAD(pf_anchor_global, pf_anchor); 935 RB_HEAD(pf_anchor_node, pf_anchor); 936 struct pf_anchor { 937 RB_ENTRY(pf_anchor) entry_global; 938 RB_ENTRY(pf_anchor) entry_node; 939 struct pf_anchor *parent; 940 struct pf_anchor_node children; 941 char name[PF_ANCHOR_NAME_SIZE]; 942 char path[MAXPATHLEN]; 943 struct pf_ruleset ruleset; 944 int refcnt; /* anchor rules */ 945 int match; /* XXX: used for pfctl black magic */ 946 }; 947 RB_PROTOTYPE(pf_anchor_global, pf_anchor, entry_global, pf_anchor_compare); 948 RB_PROTOTYPE(pf_anchor_node, pf_anchor, entry_node, pf_anchor_compare); 949 950 #define PF_RESERVED_ANCHOR "_pf" 951 952 #define PFR_TFLAG_PERSIST 0x00000001 953 #define PFR_TFLAG_CONST 0x00000002 954 #define PFR_TFLAG_ACTIVE 0x00000004 955 #define PFR_TFLAG_INACTIVE 0x00000008 956 #define PFR_TFLAG_REFERENCED 0x00000010 957 #define PFR_TFLAG_REFDANCHOR 0x00000020 958 #define PFR_TFLAG_COUNTERS 0x00000040 959 /* Adjust masks below when adding flags. */ 960 #define PFR_TFLAG_USRMASK (PFR_TFLAG_PERSIST | \ 961 PFR_TFLAG_CONST | \ 962 PFR_TFLAG_COUNTERS) 963 #define PFR_TFLAG_SETMASK (PFR_TFLAG_ACTIVE | \ 964 PFR_TFLAG_INACTIVE | \ 965 PFR_TFLAG_REFERENCED | \ 966 PFR_TFLAG_REFDANCHOR) 967 #define PFR_TFLAG_ALLMASK (PFR_TFLAG_PERSIST | \ 968 PFR_TFLAG_CONST | \ 969 PFR_TFLAG_ACTIVE | \ 970 PFR_TFLAG_INACTIVE | \ 971 PFR_TFLAG_REFERENCED | \ 972 PFR_TFLAG_REFDANCHOR | \ 973 PFR_TFLAG_COUNTERS) 974 975 struct pf_anchor_stackframe; 976 977 struct pfr_table { 978 char pfrt_anchor[MAXPATHLEN]; 979 char pfrt_name[PF_TABLE_NAME_SIZE]; 980 u_int32_t pfrt_flags; 981 u_int8_t pfrt_fback; 982 }; 983 984 enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED, 985 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE, 986 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_NOCOUNT, PFR_FB_MAX }; 987 988 struct pfr_addr { 989 union { 990 struct in_addr _pfra_ip4addr; 991 struct in6_addr _pfra_ip6addr; 992 } pfra_u; 993 u_int8_t pfra_af; 994 u_int8_t pfra_net; 995 u_int8_t pfra_not; 996 u_int8_t pfra_fback; 997 }; 998 #define pfra_ip4addr pfra_u._pfra_ip4addr 999 #define pfra_ip6addr pfra_u._pfra_ip6addr 1000 1001 enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX }; 1002 enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX }; 1003 enum { PFR_TYPE_PACKETS, PFR_TYPE_BYTES, PFR_TYPE_MAX }; 1004 #define PFR_NUM_COUNTERS (PFR_DIR_MAX * PFR_OP_ADDR_MAX * PFR_TYPE_MAX) 1005 #define PFR_OP_XPASS PFR_OP_ADDR_MAX 1006 1007 struct pfr_astats { 1008 struct pfr_addr pfras_a; 1009 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1010 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1011 long pfras_tzero; 1012 }; 1013 1014 enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX }; 1015 1016 struct pfr_tstats { 1017 struct pfr_table pfrts_t; 1018 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1019 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1020 u_int64_t pfrts_match; 1021 u_int64_t pfrts_nomatch; 1022 long pfrts_tzero; 1023 int pfrts_cnt; 1024 int pfrts_refcnt[PFR_REFCNT_MAX]; 1025 }; 1026 1027 struct pfr_ktstats { 1028 struct pfr_table pfrts_t; 1029 counter_u64_t pfrkts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1030 counter_u64_t pfrkts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1031 counter_u64_t pfrkts_match; 1032 counter_u64_t pfrkts_nomatch; 1033 long pfrkts_tzero; 1034 int pfrkts_cnt; 1035 int pfrkts_refcnt[PFR_REFCNT_MAX]; 1036 }; 1037 #define pfrts_name pfrts_t.pfrt_name 1038 #define pfrts_flags pfrts_t.pfrt_flags 1039 1040 #ifndef _SOCKADDR_UNION_DEFINED 1041 #define _SOCKADDR_UNION_DEFINED 1042 union sockaddr_union { 1043 struct sockaddr sa; 1044 struct sockaddr_in sin; 1045 struct sockaddr_in6 sin6; 1046 }; 1047 #endif /* _SOCKADDR_UNION_DEFINED */ 1048 1049 struct pfr_kcounters { 1050 counter_u64_t pfrkc_counters; 1051 long pfrkc_tzero; 1052 }; 1053 #define pfr_kentry_counter(kc, dir, op, t) \ 1054 ((kc)->pfrkc_counters + \ 1055 (dir) * PFR_OP_ADDR_MAX * PFR_TYPE_MAX + (op) * PFR_TYPE_MAX + (t)) 1056 1057 SLIST_HEAD(pfr_kentryworkq, pfr_kentry); 1058 struct pfr_kentry { 1059 struct radix_node pfrke_node[2]; 1060 union sockaddr_union pfrke_sa; 1061 SLIST_ENTRY(pfr_kentry) pfrke_workq; 1062 struct pfr_kcounters pfrke_counters; 1063 u_int8_t pfrke_af; 1064 u_int8_t pfrke_net; 1065 u_int8_t pfrke_not; 1066 u_int8_t pfrke_mark; 1067 }; 1068 1069 SLIST_HEAD(pfr_ktableworkq, pfr_ktable); 1070 RB_HEAD(pfr_ktablehead, pfr_ktable); 1071 struct pfr_ktable { 1072 struct pfr_ktstats pfrkt_kts; 1073 RB_ENTRY(pfr_ktable) pfrkt_tree; 1074 SLIST_ENTRY(pfr_ktable) pfrkt_workq; 1075 struct radix_node_head *pfrkt_ip4; 1076 struct radix_node_head *pfrkt_ip6; 1077 struct pfr_ktable *pfrkt_shadow; 1078 struct pfr_ktable *pfrkt_root; 1079 struct pf_ruleset *pfrkt_rs; 1080 long pfrkt_larg; 1081 int pfrkt_nflags; 1082 }; 1083 #define pfrkt_t pfrkt_kts.pfrts_t 1084 #define pfrkt_name pfrkt_t.pfrt_name 1085 #define pfrkt_anchor pfrkt_t.pfrt_anchor 1086 #define pfrkt_ruleset pfrkt_t.pfrt_ruleset 1087 #define pfrkt_flags pfrkt_t.pfrt_flags 1088 #define pfrkt_cnt pfrkt_kts.pfrkts_cnt 1089 #define pfrkt_refcnt pfrkt_kts.pfrkts_refcnt 1090 #define pfrkt_packets pfrkt_kts.pfrkts_packets 1091 #define pfrkt_bytes pfrkt_kts.pfrkts_bytes 1092 #define pfrkt_match pfrkt_kts.pfrkts_match 1093 #define pfrkt_nomatch pfrkt_kts.pfrkts_nomatch 1094 #define pfrkt_tzero pfrkt_kts.pfrkts_tzero 1095 1096 /* keep synced with pfi_kif, used in RB_FIND */ 1097 struct pfi_kif_cmp { 1098 char pfik_name[IFNAMSIZ]; 1099 }; 1100 1101 struct pfi_kif { 1102 char pfik_name[IFNAMSIZ]; 1103 union { 1104 RB_ENTRY(pfi_kif) _pfik_tree; 1105 LIST_ENTRY(pfi_kif) _pfik_list; 1106 } _pfik_glue; 1107 #define pfik_tree _pfik_glue._pfik_tree 1108 #define pfik_list _pfik_glue._pfik_list 1109 u_int64_t pfik_packets[2][2][2]; 1110 u_int64_t pfik_bytes[2][2][2]; 1111 u_int32_t pfik_tzero; 1112 u_int pfik_flags; 1113 struct ifnet *pfik_ifp; 1114 struct ifg_group *pfik_group; 1115 u_int pfik_rulerefs; 1116 TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs; 1117 }; 1118 1119 #define PFI_IFLAG_REFS 0x0001 /* has state references */ 1120 #define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */ 1121 1122 struct pf_pdesc { 1123 struct { 1124 int done; 1125 uid_t uid; 1126 gid_t gid; 1127 } lookup; 1128 u_int64_t tot_len; /* Make Mickey money */ 1129 union { 1130 struct tcphdr *tcp; 1131 struct udphdr *udp; 1132 struct icmp *icmp; 1133 #ifdef INET6 1134 struct icmp6_hdr *icmp6; 1135 #endif /* INET6 */ 1136 void *any; 1137 } hdr; 1138 1139 struct pf_rule *nat_rule; /* nat/rdr rule applied to packet */ 1140 struct pf_addr *src; /* src address */ 1141 struct pf_addr *dst; /* dst address */ 1142 u_int16_t *sport; 1143 u_int16_t *dport; 1144 struct pf_mtag *pf_mtag; 1145 1146 u_int32_t p_len; /* total length of payload */ 1147 1148 u_int16_t *ip_sum; 1149 u_int16_t *proto_sum; 1150 u_int16_t flags; /* Let SCRUB trigger behavior in 1151 * state code. Easier than tags */ 1152 #define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */ 1153 #define PFDESC_IP_REAS 0x0002 /* IP frags would've been reassembled */ 1154 sa_family_t af; 1155 u_int8_t proto; 1156 u_int8_t tos; 1157 u_int8_t dir; /* direction */ 1158 u_int8_t sidx; /* key index for source */ 1159 u_int8_t didx; /* key index for destination */ 1160 }; 1161 1162 /* flags for RDR options */ 1163 #define PF_DPORT_RANGE 0x01 /* Dest port uses range */ 1164 #define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */ 1165 1166 /* UDP state enumeration */ 1167 #define PFUDPS_NO_TRAFFIC 0 1168 #define PFUDPS_SINGLE 1 1169 #define PFUDPS_MULTIPLE 2 1170 1171 #define PFUDPS_NSTATES 3 /* number of state levels */ 1172 1173 #define PFUDPS_NAMES { \ 1174 "NO_TRAFFIC", \ 1175 "SINGLE", \ 1176 "MULTIPLE", \ 1177 NULL \ 1178 } 1179 1180 /* Other protocol state enumeration */ 1181 #define PFOTHERS_NO_TRAFFIC 0 1182 #define PFOTHERS_SINGLE 1 1183 #define PFOTHERS_MULTIPLE 2 1184 1185 #define PFOTHERS_NSTATES 3 /* number of state levels */ 1186 1187 #define PFOTHERS_NAMES { \ 1188 "NO_TRAFFIC", \ 1189 "SINGLE", \ 1190 "MULTIPLE", \ 1191 NULL \ 1192 } 1193 1194 #define ACTION_SET(a, x) \ 1195 do { \ 1196 if ((a) != NULL) \ 1197 *(a) = (x); \ 1198 } while (0) 1199 1200 #define REASON_SET(a, x) \ 1201 do { \ 1202 if ((a) != NULL) \ 1203 *(a) = (x); \ 1204 if (x < PFRES_MAX) \ 1205 counter_u64_add(V_pf_status.counters[x], 1); \ 1206 } while (0) 1207 1208 struct pf_kstatus { 1209 counter_u64_t counters[PFRES_MAX]; /* reason for passing/dropping */ 1210 counter_u64_t lcounters[LCNT_MAX]; /* limit counters */ 1211 counter_u64_t fcounters[FCNT_MAX]; /* state operation counters */ 1212 counter_u64_t scounters[SCNT_MAX]; /* src_node operation counters */ 1213 uint32_t states; 1214 uint32_t src_nodes; 1215 uint32_t running; 1216 uint32_t since; 1217 uint32_t debug; 1218 uint32_t hostid; 1219 char ifname[IFNAMSIZ]; 1220 uint8_t pf_chksum[PF_MD5_DIGEST_LENGTH]; 1221 }; 1222 1223 struct pf_divert { 1224 union { 1225 struct in_addr ipv4; 1226 struct in6_addr ipv6; 1227 } addr; 1228 u_int16_t port; 1229 }; 1230 1231 #define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */ 1232 #define PFR_KENTRY_HIWAT 200000 /* Number of table entries */ 1233 1234 /* 1235 * Limit the length of the fragment queue traversal. Remember 1236 * search entry points based on the fragment offset. 1237 */ 1238 #define PF_FRAG_ENTRY_POINTS 16 1239 1240 /* 1241 * The number of entries in the fragment queue must be limited 1242 * to avoid DoS by linear seaching. Instead of a global limit, 1243 * use a limit per entry point. For large packets these sum up. 1244 */ 1245 #define PF_FRAG_ENTRY_LIMIT 64 1246 1247 /* 1248 * ioctl parameter structures 1249 */ 1250 1251 struct pfioc_pooladdr { 1252 u_int32_t action; 1253 u_int32_t ticket; 1254 u_int32_t nr; 1255 u_int32_t r_num; 1256 u_int8_t r_action; 1257 u_int8_t r_last; 1258 u_int8_t af; 1259 char anchor[MAXPATHLEN]; 1260 struct pf_pooladdr addr; 1261 }; 1262 1263 struct pfioc_rule { 1264 u_int32_t action; 1265 u_int32_t ticket; 1266 u_int32_t pool_ticket; 1267 u_int32_t nr; 1268 char anchor[MAXPATHLEN]; 1269 char anchor_call[MAXPATHLEN]; 1270 struct pf_rule rule; 1271 }; 1272 1273 struct pfioc_natlook { 1274 struct pf_addr saddr; 1275 struct pf_addr daddr; 1276 struct pf_addr rsaddr; 1277 struct pf_addr rdaddr; 1278 u_int16_t sport; 1279 u_int16_t dport; 1280 u_int16_t rsport; 1281 u_int16_t rdport; 1282 sa_family_t af; 1283 u_int8_t proto; 1284 u_int8_t direction; 1285 }; 1286 1287 struct pfioc_state { 1288 struct pfsync_state state; 1289 }; 1290 1291 struct pfioc_src_node_kill { 1292 sa_family_t psnk_af; 1293 struct pf_rule_addr psnk_src; 1294 struct pf_rule_addr psnk_dst; 1295 u_int psnk_killed; 1296 }; 1297 1298 struct pfioc_state_kill { 1299 struct pf_state_cmp psk_pfcmp; 1300 sa_family_t psk_af; 1301 int psk_proto; 1302 struct pf_rule_addr psk_src; 1303 struct pf_rule_addr psk_dst; 1304 char psk_ifname[IFNAMSIZ]; 1305 char psk_label[PF_RULE_LABEL_SIZE]; 1306 u_int psk_killed; 1307 }; 1308 1309 struct pfioc_states { 1310 int ps_len; 1311 union { 1312 caddr_t psu_buf; 1313 struct pfsync_state *psu_states; 1314 } ps_u; 1315 #define ps_buf ps_u.psu_buf 1316 #define ps_states ps_u.psu_states 1317 }; 1318 1319 struct pfioc_src_nodes { 1320 int psn_len; 1321 union { 1322 caddr_t psu_buf; 1323 struct pf_src_node *psu_src_nodes; 1324 } psn_u; 1325 #define psn_buf psn_u.psu_buf 1326 #define psn_src_nodes psn_u.psu_src_nodes 1327 }; 1328 1329 struct pfioc_if { 1330 char ifname[IFNAMSIZ]; 1331 }; 1332 1333 struct pfioc_tm { 1334 int timeout; 1335 int seconds; 1336 }; 1337 1338 struct pfioc_limit { 1339 int index; 1340 unsigned limit; 1341 }; 1342 1343 struct pfioc_altq_v0 { 1344 u_int32_t action; 1345 u_int32_t ticket; 1346 u_int32_t nr; 1347 struct pf_altq_v0 altq; 1348 }; 1349 1350 struct pfioc_altq_v1 { 1351 u_int32_t action; 1352 u_int32_t ticket; 1353 u_int32_t nr; 1354 /* 1355 * Placed here so code that only uses the above parameters can be 1356 * written entirely in terms of the v0 or v1 type. 1357 */ 1358 u_int32_t version; 1359 struct pf_altq_v1 altq; 1360 }; 1361 1362 /* 1363 * Latest version of struct pfioc_altq_vX. This must move in lock-step with 1364 * the latest version of struct pf_altq_vX as it has that struct as a 1365 * member. 1366 */ 1367 #define PFIOC_ALTQ_VERSION PF_ALTQ_VERSION 1368 1369 struct pfioc_qstats_v0 { 1370 u_int32_t ticket; 1371 u_int32_t nr; 1372 void *buf; 1373 int nbytes; 1374 u_int8_t scheduler; 1375 }; 1376 1377 struct pfioc_qstats_v1 { 1378 u_int32_t ticket; 1379 u_int32_t nr; 1380 void *buf; 1381 int nbytes; 1382 u_int8_t scheduler; 1383 /* 1384 * Placed here so code that only uses the above parameters can be 1385 * written entirely in terms of the v0 or v1 type. 1386 */ 1387 u_int32_t version; /* Requested version of stats struct */ 1388 }; 1389 1390 /* Latest version of struct pfioc_qstats_vX */ 1391 #define PFIOC_QSTATS_VERSION 1 1392 1393 struct pfioc_ruleset { 1394 u_int32_t nr; 1395 char path[MAXPATHLEN]; 1396 char name[PF_ANCHOR_NAME_SIZE]; 1397 }; 1398 1399 #define PF_RULESET_ALTQ (PF_RULESET_MAX) 1400 #define PF_RULESET_TABLE (PF_RULESET_MAX+1) 1401 struct pfioc_trans { 1402 int size; /* number of elements */ 1403 int esize; /* size of each element in bytes */ 1404 struct pfioc_trans_e { 1405 int rs_num; 1406 char anchor[MAXPATHLEN]; 1407 u_int32_t ticket; 1408 } *array; 1409 }; 1410 1411 #define PFR_FLAG_ATOMIC 0x00000001 /* unused */ 1412 #define PFR_FLAG_DUMMY 0x00000002 1413 #define PFR_FLAG_FEEDBACK 0x00000004 1414 #define PFR_FLAG_CLSTATS 0x00000008 1415 #define PFR_FLAG_ADDRSTOO 0x00000010 1416 #define PFR_FLAG_REPLACE 0x00000020 1417 #define PFR_FLAG_ALLRSETS 0x00000040 1418 #define PFR_FLAG_ALLMASK 0x0000007F 1419 #ifdef _KERNEL 1420 #define PFR_FLAG_USERIOCTL 0x10000000 1421 #endif 1422 1423 struct pfioc_table { 1424 struct pfr_table pfrio_table; 1425 void *pfrio_buffer; 1426 int pfrio_esize; 1427 int pfrio_size; 1428 int pfrio_size2; 1429 int pfrio_nadd; 1430 int pfrio_ndel; 1431 int pfrio_nchange; 1432 int pfrio_flags; 1433 u_int32_t pfrio_ticket; 1434 }; 1435 #define pfrio_exists pfrio_nadd 1436 #define pfrio_nzero pfrio_nadd 1437 #define pfrio_nmatch pfrio_nadd 1438 #define pfrio_naddr pfrio_size2 1439 #define pfrio_setflag pfrio_size2 1440 #define pfrio_clrflag pfrio_nadd 1441 1442 struct pfioc_iface { 1443 char pfiio_name[IFNAMSIZ]; 1444 void *pfiio_buffer; 1445 int pfiio_esize; 1446 int pfiio_size; 1447 int pfiio_nzero; 1448 int pfiio_flags; 1449 }; 1450 1451 1452 /* 1453 * ioctl operations 1454 */ 1455 1456 #define DIOCSTART _IO ('D', 1) 1457 #define DIOCSTOP _IO ('D', 2) 1458 #define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule) 1459 #define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule) 1460 #define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule) 1461 /* XXX cut 8 - 17 */ 1462 #define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill) 1463 #define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state) 1464 #define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if) 1465 #define DIOCGETSTATUS _IOWR('D', 21, struct pf_status) 1466 #define DIOCCLRSTATUS _IO ('D', 22) 1467 #define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook) 1468 #define DIOCSETDEBUG _IOWR('D', 24, u_int32_t) 1469 #define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states) 1470 #define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule) 1471 /* XXX cut 26 - 28 */ 1472 #define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm) 1473 #define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm) 1474 #define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state) 1475 #define DIOCCLRRULECTRS _IO ('D', 38) 1476 #define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit) 1477 #define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit) 1478 #define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill) 1479 #define DIOCSTARTALTQ _IO ('D', 42) 1480 #define DIOCSTOPALTQ _IO ('D', 43) 1481 #define DIOCADDALTQV0 _IOWR('D', 45, struct pfioc_altq_v0) 1482 #define DIOCADDALTQV1 _IOWR('D', 45, struct pfioc_altq_v1) 1483 #define DIOCGETALTQSV0 _IOWR('D', 47, struct pfioc_altq_v0) 1484 #define DIOCGETALTQSV1 _IOWR('D', 47, struct pfioc_altq_v1) 1485 #define DIOCGETALTQV0 _IOWR('D', 48, struct pfioc_altq_v0) 1486 #define DIOCGETALTQV1 _IOWR('D', 48, struct pfioc_altq_v1) 1487 #define DIOCCHANGEALTQV0 _IOWR('D', 49, struct pfioc_altq_v0) 1488 #define DIOCCHANGEALTQV1 _IOWR('D', 49, struct pfioc_altq_v1) 1489 #define DIOCGETQSTATSV0 _IOWR('D', 50, struct pfioc_qstats_v0) 1490 #define DIOCGETQSTATSV1 _IOWR('D', 50, struct pfioc_qstats_v1) 1491 #define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr) 1492 #define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr) 1493 #define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr) 1494 #define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr) 1495 #define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr) 1496 /* XXX cut 55 - 57 */ 1497 #define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset) 1498 #define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset) 1499 #define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table) 1500 #define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table) 1501 #define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table) 1502 #define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table) 1503 #define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table) 1504 #define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table) 1505 #define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table) 1506 #define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table) 1507 #define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table) 1508 #define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table) 1509 #define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table) 1510 #define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table) 1511 #define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table) 1512 #define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table) 1513 #define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table) 1514 #define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table) 1515 #define DIOCOSFPFLUSH _IO('D', 78) 1516 #define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl) 1517 #define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl) 1518 #define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans) 1519 #define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans) 1520 #define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans) 1521 #define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes) 1522 #define DIOCCLRSRCNODES _IO('D', 85) 1523 #define DIOCSETHOSTID _IOWR('D', 86, u_int32_t) 1524 #define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface) 1525 #define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface) 1526 #define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface) 1527 #define DIOCKILLSRCNODES _IOWR('D', 91, struct pfioc_src_node_kill) 1528 struct pf_ifspeed_v0 { 1529 char ifname[IFNAMSIZ]; 1530 u_int32_t baudrate; 1531 }; 1532 1533 struct pf_ifspeed_v1 { 1534 char ifname[IFNAMSIZ]; 1535 u_int32_t baudrate32; 1536 /* layout identical to struct pf_ifspeed_v0 up to this point */ 1537 u_int64_t baudrate; 1538 }; 1539 1540 /* Latest version of struct pf_ifspeed_vX */ 1541 #define PF_IFSPEED_VERSION 1 1542 1543 #define DIOCGIFSPEEDV0 _IOWR('D', 92, struct pf_ifspeed_v0) 1544 #define DIOCGIFSPEEDV1 _IOWR('D', 92, struct pf_ifspeed_v1) 1545 1546 /* 1547 * Compatibility and convenience macros 1548 */ 1549 #ifndef _KERNEL 1550 #ifdef PFIOC_USE_LATEST 1551 /* 1552 * Maintaining in-tree consumers of the ioctl interface is easier when that 1553 * code can be written in terms old names that refer to the latest interface 1554 * version as that reduces the required changes in the consumers to those 1555 * that are functionally necessary to accommodate a new interface version. 1556 */ 1557 #define pfioc_altq __CONCAT(pfioc_altq_v, PFIOC_ALTQ_VERSION) 1558 #define pfioc_qstats __CONCAT(pfioc_qstats_v, PFIOC_QSTATS_VERSION) 1559 #define pf_ifspeed __CONCAT(pf_ifspeed_v, PF_IFSPEED_VERSION) 1560 1561 #define DIOCADDALTQ __CONCAT(DIOCADDALTQV, PFIOC_ALTQ_VERSION) 1562 #define DIOCGETALTQS __CONCAT(DIOCGETALTQSV, PFIOC_ALTQ_VERSION) 1563 #define DIOCGETALTQ __CONCAT(DIOCGETALTQV, PFIOC_ALTQ_VERSION) 1564 #define DIOCCHANGEALTQ __CONCAT(DIOCCHANGEALTQV, PFIOC_ALTQ_VERSION) 1565 #define DIOCGETQSTATS __CONCAT(DIOCGETQSTATSV, PFIOC_QSTATS_VERSION) 1566 #define DIOCGIFSPEED __CONCAT(DIOCGIFSPEEDV, PF_IFSPEED_VERSION) 1567 #else 1568 /* 1569 * When building out-of-tree code that is written for the old interface, 1570 * such as may exist in ports for example, resolve the old struct tags and 1571 * ioctl command names to the v0 versions. 1572 */ 1573 #define pfioc_altq __CONCAT(pfioc_altq_v, 0) 1574 #define pfioc_qstats __CONCAT(pfioc_qstats_v, 0) 1575 #define pf_ifspeed __CONCAT(pf_ifspeed_v, 0) 1576 1577 #define DIOCADDALTQ __CONCAT(DIOCADDALTQV, 0) 1578 #define DIOCGETALTQS __CONCAT(DIOCGETALTQSV, 0) 1579 #define DIOCGETALTQ __CONCAT(DIOCGETALTQV, 0) 1580 #define DIOCCHANGEALTQ __CONCAT(DIOCCHANGEALTQV, 0) 1581 #define DIOCGETQSTATS __CONCAT(DIOCGETQSTATSV, 0) 1582 #define DIOCGIFSPEED __CONCAT(DIOCGIFSPEEDV, 0) 1583 #endif /* PFIOC_USE_LATEST */ 1584 #endif /* _KERNEL */ 1585 1586 #ifdef _KERNEL 1587 LIST_HEAD(pf_src_node_list, pf_src_node); 1588 struct pf_srchash { 1589 struct pf_src_node_list nodes; 1590 struct mtx lock; 1591 }; 1592 1593 struct pf_keyhash { 1594 LIST_HEAD(, pf_state_key) keys; 1595 struct mtx lock; 1596 }; 1597 1598 struct pf_idhash { 1599 LIST_HEAD(, pf_state) states; 1600 struct mtx lock; 1601 }; 1602 1603 extern u_long pf_hashmask; 1604 extern u_long pf_srchashmask; 1605 #define PF_HASHSIZ (131072) 1606 #define PF_SRCHASHSIZ (PF_HASHSIZ/4) 1607 VNET_DECLARE(struct pf_keyhash *, pf_keyhash); 1608 VNET_DECLARE(struct pf_idhash *, pf_idhash); 1609 #define V_pf_keyhash VNET(pf_keyhash) 1610 #define V_pf_idhash VNET(pf_idhash) 1611 VNET_DECLARE(struct pf_srchash *, pf_srchash); 1612 #define V_pf_srchash VNET(pf_srchash) 1613 1614 #define PF_IDHASH(s) (be64toh((s)->id) % (pf_hashmask + 1)) 1615 1616 VNET_DECLARE(void *, pf_swi_cookie); 1617 #define V_pf_swi_cookie VNET(pf_swi_cookie) 1618 1619 VNET_DECLARE(uint64_t, pf_stateid[MAXCPU]); 1620 #define V_pf_stateid VNET(pf_stateid) 1621 1622 TAILQ_HEAD(pf_altqqueue, pf_altq); 1623 VNET_DECLARE(struct pf_altqqueue, pf_altqs[4]); 1624 #define V_pf_altqs VNET(pf_altqs) 1625 VNET_DECLARE(struct pf_palist, pf_pabuf); 1626 #define V_pf_pabuf VNET(pf_pabuf) 1627 1628 VNET_DECLARE(u_int32_t, ticket_altqs_active); 1629 #define V_ticket_altqs_active VNET(ticket_altqs_active) 1630 VNET_DECLARE(u_int32_t, ticket_altqs_inactive); 1631 #define V_ticket_altqs_inactive VNET(ticket_altqs_inactive) 1632 VNET_DECLARE(int, altqs_inactive_open); 1633 #define V_altqs_inactive_open VNET(altqs_inactive_open) 1634 VNET_DECLARE(u_int32_t, ticket_pabuf); 1635 #define V_ticket_pabuf VNET(ticket_pabuf) 1636 VNET_DECLARE(struct pf_altqqueue *, pf_altqs_active); 1637 #define V_pf_altqs_active VNET(pf_altqs_active) 1638 VNET_DECLARE(struct pf_altqqueue *, pf_altq_ifs_active); 1639 #define V_pf_altq_ifs_active VNET(pf_altq_ifs_active) 1640 VNET_DECLARE(struct pf_altqqueue *, pf_altqs_inactive); 1641 #define V_pf_altqs_inactive VNET(pf_altqs_inactive) 1642 VNET_DECLARE(struct pf_altqqueue *, pf_altq_ifs_inactive); 1643 #define V_pf_altq_ifs_inactive VNET(pf_altq_ifs_inactive) 1644 1645 VNET_DECLARE(struct pf_rulequeue, pf_unlinked_rules); 1646 #define V_pf_unlinked_rules VNET(pf_unlinked_rules) 1647 1648 void pf_initialize(void); 1649 void pf_mtag_initialize(void); 1650 void pf_mtag_cleanup(void); 1651 void pf_cleanup(void); 1652 1653 struct pf_mtag *pf_get_mtag(struct mbuf *); 1654 1655 extern void pf_calc_skip_steps(struct pf_rulequeue *); 1656 #ifdef ALTQ 1657 extern void pf_altq_ifnet_event(struct ifnet *, int); 1658 #endif 1659 VNET_DECLARE(uma_zone_t, pf_state_z); 1660 #define V_pf_state_z VNET(pf_state_z) 1661 VNET_DECLARE(uma_zone_t, pf_state_key_z); 1662 #define V_pf_state_key_z VNET(pf_state_key_z) 1663 VNET_DECLARE(uma_zone_t, pf_state_scrub_z); 1664 #define V_pf_state_scrub_z VNET(pf_state_scrub_z) 1665 1666 extern void pf_purge_thread(void *); 1667 extern void pf_unload_vnet_purge(void); 1668 extern void pf_intr(void *); 1669 extern void pf_purge_expired_src_nodes(void); 1670 1671 extern int pf_unlink_state(struct pf_state *, u_int); 1672 #define PF_ENTER_LOCKED 0x00000001 1673 #define PF_RETURN_LOCKED 0x00000002 1674 extern int pf_state_insert(struct pfi_kif *, 1675 struct pf_state_key *, 1676 struct pf_state_key *, 1677 struct pf_state *); 1678 extern void pf_free_state(struct pf_state *); 1679 1680 static __inline void 1681 pf_ref_state(struct pf_state *s) 1682 { 1683 1684 refcount_acquire(&s->refs); 1685 } 1686 1687 static __inline int 1688 pf_release_state(struct pf_state *s) 1689 { 1690 1691 if (refcount_release(&s->refs)) { 1692 pf_free_state(s); 1693 return (1); 1694 } else 1695 return (0); 1696 } 1697 1698 extern struct pf_state *pf_find_state_byid(uint64_t, uint32_t); 1699 extern struct pf_state *pf_find_state_all(struct pf_state_key_cmp *, 1700 u_int, int *); 1701 extern struct pf_src_node *pf_find_src_node(struct pf_addr *, 1702 struct pf_rule *, sa_family_t, int); 1703 extern void pf_unlink_src_node(struct pf_src_node *); 1704 extern u_int pf_free_src_nodes(struct pf_src_node_list *); 1705 extern void pf_print_state(struct pf_state *); 1706 extern void pf_print_flags(u_int8_t); 1707 extern u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t, 1708 u_int8_t); 1709 extern u_int16_t pf_proto_cksum_fixup(struct mbuf *, u_int16_t, 1710 u_int16_t, u_int16_t, u_int8_t); 1711 1712 VNET_DECLARE(struct ifnet *, sync_ifp); 1713 #define V_sync_ifp VNET(sync_ifp); 1714 VNET_DECLARE(struct pf_rule, pf_default_rule); 1715 #define V_pf_default_rule VNET(pf_default_rule) 1716 extern void pf_addrcpy(struct pf_addr *, struct pf_addr *, 1717 u_int8_t); 1718 void pf_free_rule(struct pf_rule *); 1719 1720 #ifdef INET 1721 int pf_test(int, int, struct ifnet *, struct mbuf **, struct inpcb *); 1722 int pf_normalize_ip(struct mbuf **, int, struct pfi_kif *, u_short *, 1723 struct pf_pdesc *); 1724 #endif /* INET */ 1725 1726 #ifdef INET6 1727 int pf_test6(int, int, struct ifnet *, struct mbuf **, struct inpcb *); 1728 int pf_normalize_ip6(struct mbuf **, int, struct pfi_kif *, u_short *, 1729 struct pf_pdesc *); 1730 void pf_poolmask(struct pf_addr *, struct pf_addr*, 1731 struct pf_addr *, struct pf_addr *, u_int8_t); 1732 void pf_addr_inc(struct pf_addr *, sa_family_t); 1733 int pf_refragment6(struct ifnet *, struct mbuf **, struct m_tag *); 1734 #endif /* INET6 */ 1735 1736 u_int32_t pf_new_isn(struct pf_state *); 1737 void *pf_pull_hdr(struct mbuf *, int, void *, int, u_short *, u_short *, 1738 sa_family_t); 1739 void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t); 1740 void pf_change_proto_a(struct mbuf *, void *, u_int16_t *, u_int32_t, 1741 u_int8_t); 1742 void pf_change_tcp_a(struct mbuf *, void *, u_int16_t *, u_int32_t); 1743 void pf_send_deferred_syn(struct pf_state *); 1744 int pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *, 1745 struct pf_addr *, sa_family_t); 1746 int pf_match_addr_range(struct pf_addr *, struct pf_addr *, 1747 struct pf_addr *, sa_family_t); 1748 int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t); 1749 1750 void pf_normalize_init(void); 1751 void pf_normalize_cleanup(void); 1752 int pf_normalize_tcp(int, struct pfi_kif *, struct mbuf *, int, int, void *, 1753 struct pf_pdesc *); 1754 void pf_normalize_tcp_cleanup(struct pf_state *); 1755 int pf_normalize_tcp_init(struct mbuf *, int, struct pf_pdesc *, 1756 struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *); 1757 int pf_normalize_tcp_stateful(struct mbuf *, int, struct pf_pdesc *, 1758 u_short *, struct tcphdr *, struct pf_state *, 1759 struct pf_state_peer *, struct pf_state_peer *, int *); 1760 u_int32_t 1761 pf_state_expires(const struct pf_state *); 1762 void pf_purge_expired_fragments(void); 1763 void pf_purge_fragments(uint32_t); 1764 int pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kif *, 1765 int); 1766 int pf_socket_lookup(int, struct pf_pdesc *, struct mbuf *); 1767 struct pf_state_key *pf_alloc_state_key(int); 1768 void pfr_initialize(void); 1769 void pfr_cleanup(void); 1770 int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t); 1771 void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t, 1772 u_int64_t, int, int, int); 1773 int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, sa_family_t); 1774 void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *); 1775 struct pfr_ktable * 1776 pfr_attach_table(struct pf_ruleset *, char *); 1777 void pfr_detach_table(struct pfr_ktable *); 1778 int pfr_clr_tables(struct pfr_table *, int *, int); 1779 int pfr_add_tables(struct pfr_table *, int, int *, int); 1780 int pfr_del_tables(struct pfr_table *, int, int *, int); 1781 int pfr_table_count(struct pfr_table *, int); 1782 int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int); 1783 int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int); 1784 int pfr_clr_tstats(struct pfr_table *, int, int *, int); 1785 int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int); 1786 int pfr_clr_addrs(struct pfr_table *, int *, int); 1787 int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *, long); 1788 int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1789 int); 1790 int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1791 int); 1792 int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1793 int *, int *, int *, int, u_int32_t); 1794 int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int); 1795 int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int); 1796 int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *, 1797 int); 1798 int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1799 int); 1800 int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int); 1801 int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int); 1802 int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int); 1803 int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *, 1804 int *, u_int32_t, int); 1805 1806 MALLOC_DECLARE(PFI_MTYPE); 1807 VNET_DECLARE(struct pfi_kif *, pfi_all); 1808 #define V_pfi_all VNET(pfi_all) 1809 1810 void pfi_initialize(void); 1811 void pfi_initialize_vnet(void); 1812 void pfi_cleanup(void); 1813 void pfi_cleanup_vnet(void); 1814 void pfi_kif_ref(struct pfi_kif *); 1815 void pfi_kif_unref(struct pfi_kif *); 1816 struct pfi_kif *pfi_kif_find(const char *); 1817 struct pfi_kif *pfi_kif_attach(struct pfi_kif *, const char *); 1818 int pfi_kif_match(struct pfi_kif *, struct pfi_kif *); 1819 void pfi_kif_purge(void); 1820 int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *, 1821 sa_family_t); 1822 int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t); 1823 void pfi_dynaddr_remove(struct pfi_dynaddr *); 1824 void pfi_dynaddr_copyout(struct pf_addr_wrap *); 1825 void pfi_update_status(const char *, struct pf_status *); 1826 void pfi_get_ifaces(const char *, struct pfi_kif *, int *); 1827 int pfi_set_flags(const char *, int); 1828 int pfi_clear_flags(const char *, int); 1829 1830 int pf_match_tag(struct mbuf *, struct pf_rule *, int *, int); 1831 int pf_tag_packet(struct mbuf *, struct pf_pdesc *, int); 1832 int pf_addr_cmp(struct pf_addr *, struct pf_addr *, 1833 sa_family_t); 1834 void pf_qid2qname(u_int32_t, char *); 1835 1836 VNET_DECLARE(struct pf_kstatus, pf_status); 1837 #define V_pf_status VNET(pf_status) 1838 1839 struct pf_limit { 1840 uma_zone_t zone; 1841 u_int limit; 1842 }; 1843 VNET_DECLARE(struct pf_limit, pf_limits[PF_LIMIT_MAX]); 1844 #define V_pf_limits VNET(pf_limits) 1845 1846 #endif /* _KERNEL */ 1847 1848 #ifdef _KERNEL 1849 VNET_DECLARE(struct pf_anchor_global, pf_anchors); 1850 #define V_pf_anchors VNET(pf_anchors) 1851 VNET_DECLARE(struct pf_anchor, pf_main_anchor); 1852 #define V_pf_main_anchor VNET(pf_main_anchor) 1853 #define pf_main_ruleset V_pf_main_anchor.ruleset 1854 #endif 1855 1856 /* these ruleset functions can be linked into userland programs (pfctl) */ 1857 int pf_get_ruleset_number(u_int8_t); 1858 void pf_init_ruleset(struct pf_ruleset *); 1859 int pf_anchor_setup(struct pf_rule *, 1860 const struct pf_ruleset *, const char *); 1861 int pf_anchor_copyout(const struct pf_ruleset *, 1862 const struct pf_rule *, struct pfioc_rule *); 1863 void pf_anchor_remove(struct pf_rule *); 1864 void pf_remove_if_empty_ruleset(struct pf_ruleset *); 1865 struct pf_ruleset *pf_find_ruleset(const char *); 1866 struct pf_ruleset *pf_find_or_create_ruleset(const char *); 1867 void pf_rs_initialize(void); 1868 1869 /* The fingerprint functions can be linked into userland programs (tcpdump) */ 1870 int pf_osfp_add(struct pf_osfp_ioctl *); 1871 #ifdef _KERNEL 1872 struct pf_osfp_enlist * 1873 pf_osfp_fingerprint(struct pf_pdesc *, struct mbuf *, int, 1874 const struct tcphdr *); 1875 #endif /* _KERNEL */ 1876 void pf_osfp_flush(void); 1877 int pf_osfp_get(struct pf_osfp_ioctl *); 1878 int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t); 1879 1880 #ifdef _KERNEL 1881 void pf_print_host(struct pf_addr *, u_int16_t, u_int8_t); 1882 1883 void pf_step_into_anchor(struct pf_anchor_stackframe *, int *, 1884 struct pf_ruleset **, int, struct pf_rule **, 1885 struct pf_rule **, int *); 1886 int pf_step_out_of_anchor(struct pf_anchor_stackframe *, int *, 1887 struct pf_ruleset **, int, struct pf_rule **, 1888 struct pf_rule **, int *); 1889 1890 int pf_map_addr(u_int8_t, struct pf_rule *, 1891 struct pf_addr *, struct pf_addr *, 1892 struct pf_addr *, struct pf_src_node **); 1893 struct pf_rule *pf_get_translation(struct pf_pdesc *, struct mbuf *, 1894 int, int, struct pfi_kif *, struct pf_src_node **, 1895 struct pf_state_key **, struct pf_state_key **, 1896 struct pf_addr *, struct pf_addr *, 1897 uint16_t, uint16_t, struct pf_anchor_stackframe *); 1898 1899 struct pf_state_key *pf_state_key_setup(struct pf_pdesc *, struct pf_addr *, 1900 struct pf_addr *, u_int16_t, u_int16_t); 1901 struct pf_state_key *pf_state_key_clone(struct pf_state_key *); 1902 #endif /* _KERNEL */ 1903 1904 #endif /* _NET_PFVAR_H_ */ 1905