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sys/net/pfvar.h
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1 /* 2 * Copyright (c) 2001 Daniel Hartmeier 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 9 * - Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * - Redistributions in binary form must reproduce the above 12 * copyright notice, this list of conditions and the following 13 * disclaimer in the documentation and/or other materials provided 14 * with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 19 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 20 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 22 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 24 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 26 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 27 * POSSIBILITY OF SUCH DAMAGE. 28 * 29 * $OpenBSD: pfvar.h,v 1.282 2009/01/29 15:12:28 pyr Exp $ 30 * $FreeBSD: releng/10.0/sys/net/pfvar.h 240736 2012-09-20 06:52:05Z glebius $ 31 */ 32 33 #ifndef _NET_PFVAR_H_ 34 #define _NET_PFVAR_H_ 35 36 #include <sys/param.h> 37 #include <sys/queue.h> 38 #include <sys/refcount.h> 39 #include <sys/tree.h> 40 41 #include <net/radix.h> 42 #include <netinet/in.h> 43 44 #include <net/pf_mtag.h> 45 46 #define PF_TCPS_PROXY_SRC ((TCP_NSTATES)+0) 47 #define PF_TCPS_PROXY_DST ((TCP_NSTATES)+1) 48 49 #define PF_MD5_DIGEST_LENGTH 16 50 #ifdef MD5_DIGEST_LENGTH 51 #if PF_MD5_DIGEST_LENGTH != MD5_DIGEST_LENGTH 52 #error 53 #endif 54 #endif 55 56 enum { PF_INOUT, PF_IN, PF_OUT }; 57 enum { PF_PASS, PF_DROP, PF_SCRUB, PF_NOSCRUB, PF_NAT, PF_NONAT, 58 PF_BINAT, PF_NOBINAT, PF_RDR, PF_NORDR, PF_SYNPROXY_DROP, PF_DEFER }; 59 enum { PF_RULESET_SCRUB, PF_RULESET_FILTER, PF_RULESET_NAT, 60 PF_RULESET_BINAT, PF_RULESET_RDR, PF_RULESET_MAX }; 61 enum { PF_OP_NONE, PF_OP_IRG, PF_OP_EQ, PF_OP_NE, PF_OP_LT, 62 PF_OP_LE, PF_OP_GT, PF_OP_GE, PF_OP_XRG, PF_OP_RRG }; 63 enum { PF_DEBUG_NONE, PF_DEBUG_URGENT, PF_DEBUG_MISC, PF_DEBUG_NOISY }; 64 enum { PF_CHANGE_NONE, PF_CHANGE_ADD_HEAD, PF_CHANGE_ADD_TAIL, 65 PF_CHANGE_ADD_BEFORE, PF_CHANGE_ADD_AFTER, 66 PF_CHANGE_REMOVE, PF_CHANGE_GET_TICKET }; 67 enum { PF_GET_NONE, PF_GET_CLR_CNTR }; 68 enum { PF_SK_WIRE, PF_SK_STACK, PF_SK_BOTH }; 69 70 /* 71 * Note about PFTM_*: real indices into pf_rule.timeout[] come before 72 * PFTM_MAX, special cases afterwards. See pf_state_expires(). 73 */ 74 enum { PFTM_TCP_FIRST_PACKET, PFTM_TCP_OPENING, PFTM_TCP_ESTABLISHED, 75 PFTM_TCP_CLOSING, PFTM_TCP_FIN_WAIT, PFTM_TCP_CLOSED, 76 PFTM_UDP_FIRST_PACKET, PFTM_UDP_SINGLE, PFTM_UDP_MULTIPLE, 77 PFTM_ICMP_FIRST_PACKET, PFTM_ICMP_ERROR_REPLY, 78 PFTM_OTHER_FIRST_PACKET, PFTM_OTHER_SINGLE, 79 PFTM_OTHER_MULTIPLE, PFTM_FRAG, PFTM_INTERVAL, 80 PFTM_ADAPTIVE_START, PFTM_ADAPTIVE_END, PFTM_SRC_NODE, 81 PFTM_TS_DIFF, PFTM_MAX, PFTM_PURGE, PFTM_UNLINKED, 82 PFTM_UNTIL_PACKET }; 83 84 /* PFTM default values */ 85 #define PFTM_TCP_FIRST_PACKET_VAL 120 /* First TCP packet */ 86 #define PFTM_TCP_OPENING_VAL 30 /* No response yet */ 87 #define PFTM_TCP_ESTABLISHED_VAL 24*60*60/* Established */ 88 #define PFTM_TCP_CLOSING_VAL 15 * 60 /* Half closed */ 89 #define PFTM_TCP_FIN_WAIT_VAL 45 /* Got both FINs */ 90 #define PFTM_TCP_CLOSED_VAL 90 /* Got a RST */ 91 #define PFTM_UDP_FIRST_PACKET_VAL 60 /* First UDP packet */ 92 #define PFTM_UDP_SINGLE_VAL 30 /* Unidirectional */ 93 #define PFTM_UDP_MULTIPLE_VAL 60 /* Bidirectional */ 94 #define PFTM_ICMP_FIRST_PACKET_VAL 20 /* First ICMP packet */ 95 #define PFTM_ICMP_ERROR_REPLY_VAL 10 /* Got error response */ 96 #define PFTM_OTHER_FIRST_PACKET_VAL 60 /* First packet */ 97 #define PFTM_OTHER_SINGLE_VAL 30 /* Unidirectional */ 98 #define PFTM_OTHER_MULTIPLE_VAL 60 /* Bidirectional */ 99 #define PFTM_FRAG_VAL 30 /* Fragment expire */ 100 #define PFTM_INTERVAL_VAL 10 /* Expire interval */ 101 #define PFTM_SRC_NODE_VAL 0 /* Source tracking */ 102 #define PFTM_TS_DIFF_VAL 30 /* Allowed TS diff */ 103 104 enum { PF_NOPFROUTE, PF_FASTROUTE, PF_ROUTETO, PF_DUPTO, PF_REPLYTO }; 105 enum { PF_LIMIT_STATES, PF_LIMIT_SRC_NODES, PF_LIMIT_FRAGS, 106 PF_LIMIT_TABLE_ENTRIES, PF_LIMIT_MAX }; 107 #define PF_POOL_IDMASK 0x0f 108 enum { PF_POOL_NONE, PF_POOL_BITMASK, PF_POOL_RANDOM, 109 PF_POOL_SRCHASH, PF_POOL_ROUNDROBIN }; 110 enum { PF_ADDR_ADDRMASK, PF_ADDR_NOROUTE, PF_ADDR_DYNIFTL, 111 PF_ADDR_TABLE, PF_ADDR_URPFFAILED, 112 PF_ADDR_RANGE }; 113 #define PF_POOL_TYPEMASK 0x0f 114 #define PF_POOL_STICKYADDR 0x20 115 #define PF_WSCALE_FLAG 0x80 116 #define PF_WSCALE_MASK 0x0f 117 118 #define PF_LOG 0x01 119 #define PF_LOG_ALL 0x02 120 #define PF_LOG_SOCKET_LOOKUP 0x04 121 122 struct pf_addr { 123 union { 124 struct in_addr v4; 125 struct in6_addr v6; 126 u_int8_t addr8[16]; 127 u_int16_t addr16[8]; 128 u_int32_t addr32[4]; 129 } pfa; /* 128-bit address */ 130 #define v4 pfa.v4 131 #define v6 pfa.v6 132 #define addr8 pfa.addr8 133 #define addr16 pfa.addr16 134 #define addr32 pfa.addr32 135 }; 136 137 #define PF_TABLE_NAME_SIZE 32 138 139 #define PFI_AFLAG_NETWORK 0x01 140 #define PFI_AFLAG_BROADCAST 0x02 141 #define PFI_AFLAG_PEER 0x04 142 #define PFI_AFLAG_MODEMASK 0x07 143 #define PFI_AFLAG_NOALIAS 0x08 144 145 struct pf_addr_wrap { 146 union { 147 struct { 148 struct pf_addr addr; 149 struct pf_addr mask; 150 } a; 151 char ifname[IFNAMSIZ]; 152 char tblname[PF_TABLE_NAME_SIZE]; 153 } v; 154 union { 155 struct pfi_dynaddr *dyn; 156 struct pfr_ktable *tbl; 157 int dyncnt; 158 int tblcnt; 159 } p; 160 u_int8_t type; /* PF_ADDR_* */ 161 u_int8_t iflags; /* PFI_AFLAG_* */ 162 }; 163 164 #ifdef _KERNEL 165 166 struct pfi_dynaddr { 167 TAILQ_ENTRY(pfi_dynaddr) entry; 168 struct pf_addr pfid_addr4; 169 struct pf_addr pfid_mask4; 170 struct pf_addr pfid_addr6; 171 struct pf_addr pfid_mask6; 172 struct pfr_ktable *pfid_kt; 173 struct pfi_kif *pfid_kif; 174 int pfid_net; /* mask or 128 */ 175 int pfid_acnt4; /* address count IPv4 */ 176 int pfid_acnt6; /* address count IPv6 */ 177 sa_family_t pfid_af; /* rule af */ 178 u_int8_t pfid_iflags; /* PFI_AFLAG_* */ 179 }; 180 181 /* 182 * Address manipulation macros 183 */ 184 #define HTONL(x) (x) = htonl((__uint32_t)(x)) 185 #define HTONS(x) (x) = htons((__uint16_t)(x)) 186 #define NTOHL(x) (x) = ntohl((__uint32_t)(x)) 187 #define NTOHS(x) (x) = ntohs((__uint16_t)(x)) 188 189 #define PF_NAME "pf" 190 191 #define PF_HASHROW_ASSERT(h) mtx_assert(&(h)->lock, MA_OWNED) 192 #define PF_HASHROW_LOCK(h) mtx_lock(&(h)->lock) 193 #define PF_HASHROW_UNLOCK(h) mtx_unlock(&(h)->lock) 194 195 #define PF_STATE_LOCK(s) \ 196 do { \ 197 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(s)]; \ 198 PF_HASHROW_LOCK(_ih); \ 199 } while (0) 200 201 #define PF_STATE_UNLOCK(s) \ 202 do { \ 203 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH((s))]; \ 204 PF_HASHROW_UNLOCK(_ih); \ 205 } while (0) 206 207 #ifdef INVARIANTS 208 #define PF_STATE_LOCK_ASSERT(s) \ 209 do { \ 210 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(s)]; \ 211 PF_HASHROW_ASSERT(_ih); \ 212 } while (0) 213 #else /* !INVARIANTS */ 214 #define PF_STATE_LOCK_ASSERT(s) do {} while (0) 215 #endif /* INVARIANTS */ 216 217 extern struct mtx pf_unlnkdrules_mtx; 218 #define PF_UNLNKDRULES_LOCK() mtx_lock(&pf_unlnkdrules_mtx) 219 #define PF_UNLNKDRULES_UNLOCK() mtx_unlock(&pf_unlnkdrules_mtx) 220 221 extern struct rwlock pf_rules_lock; 222 #define PF_RULES_RLOCK() rw_rlock(&pf_rules_lock) 223 #define PF_RULES_RUNLOCK() rw_runlock(&pf_rules_lock) 224 #define PF_RULES_WLOCK() rw_wlock(&pf_rules_lock) 225 #define PF_RULES_WUNLOCK() rw_wunlock(&pf_rules_lock) 226 #define PF_RULES_ASSERT() rw_assert(&pf_rules_lock, RA_LOCKED) 227 #define PF_RULES_RASSERT() rw_assert(&pf_rules_lock, RA_RLOCKED) 228 #define PF_RULES_WASSERT() rw_assert(&pf_rules_lock, RA_WLOCKED) 229 230 #define PF_MODVER 1 231 #define PFLOG_MODVER 1 232 #define PFSYNC_MODVER 1 233 234 #define PFLOG_MINVER 1 235 #define PFLOG_PREFVER PFLOG_MODVER 236 #define PFLOG_MAXVER 1 237 #define PFSYNC_MINVER 1 238 #define PFSYNC_PREFVER PFSYNC_MODVER 239 #define PFSYNC_MAXVER 1 240 241 #ifdef INET 242 #ifndef INET6 243 #define PF_INET_ONLY 244 #endif /* ! INET6 */ 245 #endif /* INET */ 246 247 #ifdef INET6 248 #ifndef INET 249 #define PF_INET6_ONLY 250 #endif /* ! INET */ 251 #endif /* INET6 */ 252 253 #ifdef INET 254 #ifdef INET6 255 #define PF_INET_INET6 256 #endif /* INET6 */ 257 #endif /* INET */ 258 259 #else 260 261 #define PF_INET_INET6 262 263 #endif /* _KERNEL */ 264 265 /* Both IPv4 and IPv6 */ 266 #ifdef PF_INET_INET6 267 268 #define PF_AEQ(a, b, c) \ 269 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \ 270 ((a)->addr32[3] == (b)->addr32[3] && \ 271 (a)->addr32[2] == (b)->addr32[2] && \ 272 (a)->addr32[1] == (b)->addr32[1] && \ 273 (a)->addr32[0] == (b)->addr32[0])) \ 274 275 #define PF_ANEQ(a, b, c) \ 276 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \ 277 ((a)->addr32[3] != (b)->addr32[3] || \ 278 (a)->addr32[2] != (b)->addr32[2] || \ 279 (a)->addr32[1] != (b)->addr32[1] || \ 280 (a)->addr32[0] != (b)->addr32[0])) \ 281 282 #define PF_AZERO(a, c) \ 283 ((c == AF_INET && !(a)->addr32[0]) || \ 284 (!(a)->addr32[0] && !(a)->addr32[1] && \ 285 !(a)->addr32[2] && !(a)->addr32[3] )) \ 286 287 #define PF_MATCHA(n, a, m, b, f) \ 288 pf_match_addr(n, a, m, b, f) 289 290 #define PF_ACPY(a, b, f) \ 291 pf_addrcpy(a, b, f) 292 293 #define PF_AINC(a, f) \ 294 pf_addr_inc(a, f) 295 296 #define PF_POOLMASK(a, b, c, d, f) \ 297 pf_poolmask(a, b, c, d, f) 298 299 #else 300 301 /* Just IPv6 */ 302 303 #ifdef PF_INET6_ONLY 304 305 #define PF_AEQ(a, b, c) \ 306 ((a)->addr32[3] == (b)->addr32[3] && \ 307 (a)->addr32[2] == (b)->addr32[2] && \ 308 (a)->addr32[1] == (b)->addr32[1] && \ 309 (a)->addr32[0] == (b)->addr32[0]) \ 310 311 #define PF_ANEQ(a, b, c) \ 312 ((a)->addr32[3] != (b)->addr32[3] || \ 313 (a)->addr32[2] != (b)->addr32[2] || \ 314 (a)->addr32[1] != (b)->addr32[1] || \ 315 (a)->addr32[0] != (b)->addr32[0]) \ 316 317 #define PF_AZERO(a, c) \ 318 (!(a)->addr32[0] && \ 319 !(a)->addr32[1] && \ 320 !(a)->addr32[2] && \ 321 !(a)->addr32[3] ) \ 322 323 #define PF_MATCHA(n, a, m, b, f) \ 324 pf_match_addr(n, a, m, b, f) 325 326 #define PF_ACPY(a, b, f) \ 327 pf_addrcpy(a, b, f) 328 329 #define PF_AINC(a, f) \ 330 pf_addr_inc(a, f) 331 332 #define PF_POOLMASK(a, b, c, d, f) \ 333 pf_poolmask(a, b, c, d, f) 334 335 #else 336 337 /* Just IPv4 */ 338 #ifdef PF_INET_ONLY 339 340 #define PF_AEQ(a, b, c) \ 341 ((a)->addr32[0] == (b)->addr32[0]) 342 343 #define PF_ANEQ(a, b, c) \ 344 ((a)->addr32[0] != (b)->addr32[0]) 345 346 #define PF_AZERO(a, c) \ 347 (!(a)->addr32[0]) 348 349 #define PF_MATCHA(n, a, m, b, f) \ 350 pf_match_addr(n, a, m, b, f) 351 352 #define PF_ACPY(a, b, f) \ 353 (a)->v4.s_addr = (b)->v4.s_addr 354 355 #define PF_AINC(a, f) \ 356 do { \ 357 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \ 358 } while (0) 359 360 #define PF_POOLMASK(a, b, c, d, f) \ 361 do { \ 362 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \ 363 (((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \ 364 } while (0) 365 366 #endif /* PF_INET_ONLY */ 367 #endif /* PF_INET6_ONLY */ 368 #endif /* PF_INET_INET6 */ 369 370 /* 371 * XXX callers not FIB-aware in our version of pf yet. 372 * OpenBSD fixed it later it seems, 2010/05/07 13:33:16 claudio. 373 */ 374 #define PF_MISMATCHAW(aw, x, af, neg, ifp, rtid) \ 375 ( \ 376 (((aw)->type == PF_ADDR_NOROUTE && \ 377 pf_routable((x), (af), NULL, (rtid))) || \ 378 (((aw)->type == PF_ADDR_URPFFAILED && (ifp) != NULL && \ 379 pf_routable((x), (af), (ifp), (rtid))) || \ 380 ((aw)->type == PF_ADDR_TABLE && \ 381 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \ 382 ((aw)->type == PF_ADDR_DYNIFTL && \ 383 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \ 384 ((aw)->type == PF_ADDR_RANGE && \ 385 !pf_match_addr_range(&(aw)->v.a.addr, \ 386 &(aw)->v.a.mask, (x), (af))) || \ 387 ((aw)->type == PF_ADDR_ADDRMASK && \ 388 !PF_AZERO(&(aw)->v.a.mask, (af)) && \ 389 !PF_MATCHA(0, &(aw)->v.a.addr, \ 390 &(aw)->v.a.mask, (x), (af))))) != \ 391 (neg) \ 392 ) 393 394 395 struct pf_rule_uid { 396 uid_t uid[2]; 397 u_int8_t op; 398 }; 399 400 struct pf_rule_gid { 401 uid_t gid[2]; 402 u_int8_t op; 403 }; 404 405 struct pf_rule_addr { 406 struct pf_addr_wrap addr; 407 u_int16_t port[2]; 408 u_int8_t neg; 409 u_int8_t port_op; 410 }; 411 412 struct pf_pooladdr { 413 struct pf_addr_wrap addr; 414 TAILQ_ENTRY(pf_pooladdr) entries; 415 char ifname[IFNAMSIZ]; 416 struct pfi_kif *kif; 417 }; 418 419 TAILQ_HEAD(pf_palist, pf_pooladdr); 420 421 struct pf_poolhashkey { 422 union { 423 u_int8_t key8[16]; 424 u_int16_t key16[8]; 425 u_int32_t key32[4]; 426 } pfk; /* 128-bit hash key */ 427 #define key8 pfk.key8 428 #define key16 pfk.key16 429 #define key32 pfk.key32 430 }; 431 432 struct pf_pool { 433 struct pf_palist list; 434 struct pf_pooladdr *cur; 435 struct pf_poolhashkey key; 436 struct pf_addr counter; 437 int tblidx; 438 u_int16_t proxy_port[2]; 439 u_int8_t opts; 440 }; 441 442 443 /* A packed Operating System description for fingerprinting */ 444 typedef u_int32_t pf_osfp_t; 445 #define PF_OSFP_ANY ((pf_osfp_t)0) 446 #define PF_OSFP_UNKNOWN ((pf_osfp_t)-1) 447 #define PF_OSFP_NOMATCH ((pf_osfp_t)-2) 448 449 struct pf_osfp_entry { 450 SLIST_ENTRY(pf_osfp_entry) fp_entry; 451 pf_osfp_t fp_os; 452 int fp_enflags; 453 #define PF_OSFP_EXPANDED 0x001 /* expanded entry */ 454 #define PF_OSFP_GENERIC 0x002 /* generic signature */ 455 #define PF_OSFP_NODETAIL 0x004 /* no p0f details */ 456 #define PF_OSFP_LEN 32 457 char fp_class_nm[PF_OSFP_LEN]; 458 char fp_version_nm[PF_OSFP_LEN]; 459 char fp_subtype_nm[PF_OSFP_LEN]; 460 }; 461 #define PF_OSFP_ENTRY_EQ(a, b) \ 462 ((a)->fp_os == (b)->fp_os && \ 463 memcmp((a)->fp_class_nm, (b)->fp_class_nm, PF_OSFP_LEN) == 0 && \ 464 memcmp((a)->fp_version_nm, (b)->fp_version_nm, PF_OSFP_LEN) == 0 && \ 465 memcmp((a)->fp_subtype_nm, (b)->fp_subtype_nm, PF_OSFP_LEN) == 0) 466 467 /* handle pf_osfp_t packing */ 468 #define _FP_RESERVED_BIT 1 /* For the special negative #defines */ 469 #define _FP_UNUSED_BITS 1 470 #define _FP_CLASS_BITS 10 /* OS Class (Windows, Linux) */ 471 #define _FP_VERSION_BITS 10 /* OS version (95, 98, NT, 2.4.54, 3.2) */ 472 #define _FP_SUBTYPE_BITS 10 /* patch level (NT SP4, SP3, ECN patch) */ 473 #define PF_OSFP_UNPACK(osfp, class, version, subtype) do { \ 474 (class) = ((osfp) >> (_FP_VERSION_BITS+_FP_SUBTYPE_BITS)) & \ 475 ((1 << _FP_CLASS_BITS) - 1); \ 476 (version) = ((osfp) >> _FP_SUBTYPE_BITS) & \ 477 ((1 << _FP_VERSION_BITS) - 1);\ 478 (subtype) = (osfp) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 479 } while(0) 480 #define PF_OSFP_PACK(osfp, class, version, subtype) do { \ 481 (osfp) = ((class) & ((1 << _FP_CLASS_BITS) - 1)) << (_FP_VERSION_BITS \ 482 + _FP_SUBTYPE_BITS); \ 483 (osfp) |= ((version) & ((1 << _FP_VERSION_BITS) - 1)) << \ 484 _FP_SUBTYPE_BITS; \ 485 (osfp) |= (subtype) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 486 } while(0) 487 488 /* the fingerprint of an OSes TCP SYN packet */ 489 typedef u_int64_t pf_tcpopts_t; 490 struct pf_os_fingerprint { 491 SLIST_HEAD(pf_osfp_enlist, pf_osfp_entry) fp_oses; /* list of matches */ 492 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 493 u_int16_t fp_wsize; /* TCP window size */ 494 u_int16_t fp_psize; /* ip->ip_len */ 495 u_int16_t fp_mss; /* TCP MSS */ 496 u_int16_t fp_flags; 497 #define PF_OSFP_WSIZE_MOD 0x0001 /* Window modulus */ 498 #define PF_OSFP_WSIZE_DC 0x0002 /* Window don't care */ 499 #define PF_OSFP_WSIZE_MSS 0x0004 /* Window multiple of MSS */ 500 #define PF_OSFP_WSIZE_MTU 0x0008 /* Window multiple of MTU */ 501 #define PF_OSFP_PSIZE_MOD 0x0010 /* packet size modulus */ 502 #define PF_OSFP_PSIZE_DC 0x0020 /* packet size don't care */ 503 #define PF_OSFP_WSCALE 0x0040 /* TCP window scaling */ 504 #define PF_OSFP_WSCALE_MOD 0x0080 /* TCP window scale modulus */ 505 #define PF_OSFP_WSCALE_DC 0x0100 /* TCP window scale dont-care */ 506 #define PF_OSFP_MSS 0x0200 /* TCP MSS */ 507 #define PF_OSFP_MSS_MOD 0x0400 /* TCP MSS modulus */ 508 #define PF_OSFP_MSS_DC 0x0800 /* TCP MSS dont-care */ 509 #define PF_OSFP_DF 0x1000 /* IPv4 don't fragment bit */ 510 #define PF_OSFP_TS0 0x2000 /* Zero timestamp */ 511 #define PF_OSFP_INET6 0x4000 /* IPv6 */ 512 u_int8_t fp_optcnt; /* TCP option count */ 513 u_int8_t fp_wscale; /* TCP window scaling */ 514 u_int8_t fp_ttl; /* IPv4 TTL */ 515 #define PF_OSFP_MAXTTL_OFFSET 40 516 /* TCP options packing */ 517 #define PF_OSFP_TCPOPT_NOP 0x0 /* TCP NOP option */ 518 #define PF_OSFP_TCPOPT_WSCALE 0x1 /* TCP window scaling option */ 519 #define PF_OSFP_TCPOPT_MSS 0x2 /* TCP max segment size opt */ 520 #define PF_OSFP_TCPOPT_SACK 0x3 /* TCP SACK OK option */ 521 #define PF_OSFP_TCPOPT_TS 0x4 /* TCP timestamp option */ 522 #define PF_OSFP_TCPOPT_BITS 3 /* bits used by each option */ 523 #define PF_OSFP_MAX_OPTS \ 524 (sizeof(((struct pf_os_fingerprint *)0)->fp_tcpopts) * 8) \ 525 / PF_OSFP_TCPOPT_BITS 526 527 SLIST_ENTRY(pf_os_fingerprint) fp_next; 528 }; 529 530 struct pf_osfp_ioctl { 531 struct pf_osfp_entry fp_os; 532 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 533 u_int16_t fp_wsize; /* TCP window size */ 534 u_int16_t fp_psize; /* ip->ip_len */ 535 u_int16_t fp_mss; /* TCP MSS */ 536 u_int16_t fp_flags; 537 u_int8_t fp_optcnt; /* TCP option count */ 538 u_int8_t fp_wscale; /* TCP window scaling */ 539 u_int8_t fp_ttl; /* IPv4 TTL */ 540 541 int fp_getnum; /* DIOCOSFPGET number */ 542 }; 543 544 545 union pf_rule_ptr { 546 struct pf_rule *ptr; 547 u_int32_t nr; 548 }; 549 550 #define PF_ANCHOR_NAME_SIZE 64 551 552 struct pf_rule { 553 struct pf_rule_addr src; 554 struct pf_rule_addr dst; 555 #define PF_SKIP_IFP 0 556 #define PF_SKIP_DIR 1 557 #define PF_SKIP_AF 2 558 #define PF_SKIP_PROTO 3 559 #define PF_SKIP_SRC_ADDR 4 560 #define PF_SKIP_SRC_PORT 5 561 #define PF_SKIP_DST_ADDR 6 562 #define PF_SKIP_DST_PORT 7 563 #define PF_SKIP_COUNT 8 564 union pf_rule_ptr skip[PF_SKIP_COUNT]; 565 #define PF_RULE_LABEL_SIZE 64 566 char label[PF_RULE_LABEL_SIZE]; 567 #define PF_QNAME_SIZE 64 568 char ifname[IFNAMSIZ]; 569 char qname[PF_QNAME_SIZE]; 570 char pqname[PF_QNAME_SIZE]; 571 #define PF_TAG_NAME_SIZE 64 572 char tagname[PF_TAG_NAME_SIZE]; 573 char match_tagname[PF_TAG_NAME_SIZE]; 574 575 char overload_tblname[PF_TABLE_NAME_SIZE]; 576 577 TAILQ_ENTRY(pf_rule) entries; 578 struct pf_pool rpool; 579 580 u_int64_t evaluations; 581 u_int64_t packets[2]; 582 u_int64_t bytes[2]; 583 584 struct pfi_kif *kif; 585 struct pf_anchor *anchor; 586 struct pfr_ktable *overload_tbl; 587 588 pf_osfp_t os_fingerprint; 589 590 int rtableid; 591 u_int32_t timeout[PFTM_MAX]; 592 u_int32_t states_cur; 593 u_int32_t states_tot; 594 u_int32_t max_states; 595 u_int32_t src_nodes; 596 u_int32_t max_src_nodes; 597 u_int32_t max_src_states; 598 u_int32_t spare1; /* netgraph */ 599 u_int32_t max_src_conn; 600 struct { 601 u_int32_t limit; 602 u_int32_t seconds; 603 } max_src_conn_rate; 604 u_int32_t qid; 605 u_int32_t pqid; 606 u_int32_t rt_listid; 607 u_int32_t nr; 608 u_int32_t prob; 609 uid_t cuid; 610 pid_t cpid; 611 612 u_int16_t return_icmp; 613 u_int16_t return_icmp6; 614 u_int16_t max_mss; 615 u_int16_t tag; 616 u_int16_t match_tag; 617 u_int16_t spare2; /* netgraph */ 618 619 struct pf_rule_uid uid; 620 struct pf_rule_gid gid; 621 622 u_int32_t rule_flag; 623 u_int8_t action; 624 u_int8_t direction; 625 u_int8_t log; 626 u_int8_t logif; 627 u_int8_t quick; 628 u_int8_t ifnot; 629 u_int8_t match_tag_not; 630 u_int8_t natpass; 631 632 #define PF_STATE_NORMAL 0x1 633 #define PF_STATE_MODULATE 0x2 634 #define PF_STATE_SYNPROXY 0x3 635 u_int8_t keep_state; 636 sa_family_t af; 637 u_int8_t proto; 638 u_int8_t type; 639 u_int8_t code; 640 u_int8_t flags; 641 u_int8_t flagset; 642 u_int8_t min_ttl; 643 u_int8_t allow_opts; 644 u_int8_t rt; 645 u_int8_t return_ttl; 646 u_int8_t tos; 647 u_int8_t set_tos; 648 u_int8_t anchor_relative; 649 u_int8_t anchor_wildcard; 650 651 #define PF_FLUSH 0x01 652 #define PF_FLUSH_GLOBAL 0x02 653 u_int8_t flush; 654 655 struct { 656 struct pf_addr addr; 657 u_int16_t port; 658 } divert; 659 }; 660 661 /* rule flags */ 662 #define PFRULE_DROP 0x0000 663 #define PFRULE_RETURNRST 0x0001 664 #define PFRULE_FRAGMENT 0x0002 665 #define PFRULE_RETURNICMP 0x0004 666 #define PFRULE_RETURN 0x0008 667 #define PFRULE_NOSYNC 0x0010 668 #define PFRULE_SRCTRACK 0x0020 /* track source states */ 669 #define PFRULE_RULESRCTRACK 0x0040 /* per rule */ 670 #define PFRULE_REFS 0x0080 /* rule has references */ 671 672 /* scrub flags */ 673 #define PFRULE_NODF 0x0100 674 #define PFRULE_FRAGCROP 0x0200 /* non-buffering frag cache */ 675 #define PFRULE_FRAGDROP 0x0400 /* drop funny fragments */ 676 #define PFRULE_RANDOMID 0x0800 677 #define PFRULE_REASSEMBLE_TCP 0x1000 678 #define PFRULE_SET_TOS 0x2000 679 680 /* rule flags again */ 681 #define PFRULE_IFBOUND 0x00010000 /* if-bound */ 682 #define PFRULE_STATESLOPPY 0x00020000 /* sloppy state tracking */ 683 684 #define PFSTATE_HIWAT 10000 /* default state table size */ 685 #define PFSTATE_ADAPT_START 6000 /* default adaptive timeout start */ 686 #define PFSTATE_ADAPT_END 12000 /* default adaptive timeout end */ 687 688 689 struct pf_threshold { 690 u_int32_t limit; 691 #define PF_THRESHOLD_MULT 1000 692 #define PF_THRESHOLD_MAX 0xffffffff / PF_THRESHOLD_MULT 693 u_int32_t seconds; 694 u_int32_t count; 695 u_int32_t last; 696 }; 697 698 struct pf_src_node { 699 LIST_ENTRY(pf_src_node) entry; 700 struct pf_addr addr; 701 struct pf_addr raddr; 702 union pf_rule_ptr rule; 703 struct pfi_kif *kif; 704 u_int64_t bytes[2]; 705 u_int64_t packets[2]; 706 u_int32_t states; 707 u_int32_t conn; 708 struct pf_threshold conn_rate; 709 u_int32_t creation; 710 u_int32_t expire; 711 sa_family_t af; 712 u_int8_t ruletype; 713 }; 714 715 #define PFSNODE_HIWAT 10000 /* default source node table size */ 716 717 struct pf_state_scrub { 718 struct timeval pfss_last; /* time received last packet */ 719 u_int32_t pfss_tsecr; /* last echoed timestamp */ 720 u_int32_t pfss_tsval; /* largest timestamp */ 721 u_int32_t pfss_tsval0; /* original timestamp */ 722 u_int16_t pfss_flags; 723 #define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */ 724 #define PFSS_PAWS 0x0010 /* stricter PAWS checks */ 725 #define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */ 726 #define PFSS_DATA_TS 0x0040 /* timestamp on data packets */ 727 #define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */ 728 u_int8_t pfss_ttl; /* stashed TTL */ 729 u_int8_t pad; 730 u_int32_t pfss_ts_mod; /* timestamp modulation */ 731 }; 732 733 struct pf_state_host { 734 struct pf_addr addr; 735 u_int16_t port; 736 u_int16_t pad; 737 }; 738 739 struct pf_state_peer { 740 struct pf_state_scrub *scrub; /* state is scrubbed */ 741 u_int32_t seqlo; /* Max sequence number sent */ 742 u_int32_t seqhi; /* Max the other end ACKd + win */ 743 u_int32_t seqdiff; /* Sequence number modulator */ 744 u_int16_t max_win; /* largest window (pre scaling) */ 745 u_int16_t mss; /* Maximum segment size option */ 746 u_int8_t state; /* active state level */ 747 u_int8_t wscale; /* window scaling factor */ 748 u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */ 749 u_int8_t pad[1]; 750 }; 751 752 /* Keep synced with struct pf_state_key. */ 753 struct pf_state_key_cmp { 754 struct pf_addr addr[2]; 755 u_int16_t port[2]; 756 sa_family_t af; 757 u_int8_t proto; 758 u_int8_t pad[2]; 759 }; 760 761 struct pf_state_key { 762 struct pf_addr addr[2]; 763 u_int16_t port[2]; 764 sa_family_t af; 765 u_int8_t proto; 766 u_int8_t pad[2]; 767 768 LIST_ENTRY(pf_state_key) entry; 769 TAILQ_HEAD(, pf_state) states[2]; 770 }; 771 772 /* Keep synced with struct pf_state. */ 773 struct pf_state_cmp { 774 u_int64_t id; 775 u_int32_t creatorid; 776 u_int8_t direction; 777 u_int8_t pad[3]; 778 }; 779 780 struct pf_state { 781 u_int64_t id; 782 u_int32_t creatorid; 783 u_int8_t direction; 784 u_int8_t pad[3]; 785 786 u_int refs; 787 TAILQ_ENTRY(pf_state) sync_list; 788 TAILQ_ENTRY(pf_state) key_list[2]; 789 LIST_ENTRY(pf_state) entry; 790 struct pf_state_peer src; 791 struct pf_state_peer dst; 792 union pf_rule_ptr rule; 793 union pf_rule_ptr anchor; 794 union pf_rule_ptr nat_rule; 795 struct pf_addr rt_addr; 796 struct pf_state_key *key[2]; /* addresses stack and wire */ 797 struct pfi_kif *kif; 798 struct pfi_kif *rt_kif; 799 struct pf_src_node *src_node; 800 struct pf_src_node *nat_src_node; 801 u_int64_t packets[2]; 802 u_int64_t bytes[2]; 803 u_int32_t creation; 804 u_int32_t expire; 805 u_int32_t pfsync_time; 806 u_int16_t tag; 807 u_int8_t log; 808 u_int8_t state_flags; 809 #define PFSTATE_ALLOWOPTS 0x01 810 #define PFSTATE_SLOPPY 0x02 811 /* was PFSTATE_PFLOW 0x04 */ 812 #define PFSTATE_NOSYNC 0x08 813 #define PFSTATE_ACK 0x10 814 u_int8_t timeout; 815 u_int8_t sync_state; /* PFSYNC_S_x */ 816 817 /* XXX */ 818 u_int8_t sync_updates; 819 u_int8_t _tail[3]; 820 }; 821 822 /* 823 * Unified state structures for pulling states out of the kernel 824 * used by pfsync(4) and the pf(4) ioctl. 825 */ 826 struct pfsync_state_scrub { 827 u_int16_t pfss_flags; 828 u_int8_t pfss_ttl; /* stashed TTL */ 829 #define PFSYNC_SCRUB_FLAG_VALID 0x01 830 u_int8_t scrub_flag; 831 u_int32_t pfss_ts_mod; /* timestamp modulation */ 832 } __packed; 833 834 struct pfsync_state_peer { 835 struct pfsync_state_scrub scrub; /* state is scrubbed */ 836 u_int32_t seqlo; /* Max sequence number sent */ 837 u_int32_t seqhi; /* Max the other end ACKd + win */ 838 u_int32_t seqdiff; /* Sequence number modulator */ 839 u_int16_t max_win; /* largest window (pre scaling) */ 840 u_int16_t mss; /* Maximum segment size option */ 841 u_int8_t state; /* active state level */ 842 u_int8_t wscale; /* window scaling factor */ 843 u_int8_t pad[6]; 844 } __packed; 845 846 struct pfsync_state_key { 847 struct pf_addr addr[2]; 848 u_int16_t port[2]; 849 }; 850 851 struct pfsync_state { 852 u_int64_t id; 853 char ifname[IFNAMSIZ]; 854 struct pfsync_state_key key[2]; 855 struct pfsync_state_peer src; 856 struct pfsync_state_peer dst; 857 struct pf_addr rt_addr; 858 u_int32_t rule; 859 u_int32_t anchor; 860 u_int32_t nat_rule; 861 u_int32_t creation; 862 u_int32_t expire; 863 u_int32_t packets[2][2]; 864 u_int32_t bytes[2][2]; 865 u_int32_t creatorid; 866 sa_family_t af; 867 u_int8_t proto; 868 u_int8_t direction; 869 u_int8_t __spare[2]; 870 u_int8_t log; 871 u_int8_t state_flags; 872 u_int8_t timeout; 873 u_int8_t sync_flags; 874 u_int8_t updates; 875 } __packed; 876 877 #ifdef _KERNEL 878 /* pfsync */ 879 typedef int pfsync_state_import_t(struct pfsync_state *, u_int8_t); 880 typedef void pfsync_insert_state_t(struct pf_state *); 881 typedef void pfsync_update_state_t(struct pf_state *); 882 typedef void pfsync_delete_state_t(struct pf_state *); 883 typedef void pfsync_clear_states_t(u_int32_t, const char *); 884 typedef int pfsync_defer_t(struct pf_state *, struct mbuf *); 885 886 extern pfsync_state_import_t *pfsync_state_import_ptr; 887 extern pfsync_insert_state_t *pfsync_insert_state_ptr; 888 extern pfsync_update_state_t *pfsync_update_state_ptr; 889 extern pfsync_delete_state_t *pfsync_delete_state_ptr; 890 extern pfsync_clear_states_t *pfsync_clear_states_ptr; 891 extern pfsync_defer_t *pfsync_defer_ptr; 892 893 void pfsync_state_export(struct pfsync_state *, 894 struct pf_state *); 895 896 /* pflog */ 897 struct pf_ruleset; 898 struct pf_pdesc; 899 typedef int pflog_packet_t(struct pfi_kif *, struct mbuf *, sa_family_t, 900 u_int8_t, u_int8_t, struct pf_rule *, struct pf_rule *, 901 struct pf_ruleset *, struct pf_pdesc *, int); 902 extern pflog_packet_t *pflog_packet_ptr; 903 904 #define V_pf_end_threads VNET(pf_end_threads) 905 #endif /* _KERNEL */ 906 907 #define PFSYNC_FLAG_SRCNODE 0x04 908 #define PFSYNC_FLAG_NATSRCNODE 0x08 909 910 /* for copies to/from network byte order */ 911 /* ioctl interface also uses network byte order */ 912 #define pf_state_peer_hton(s,d) do { \ 913 (d)->seqlo = htonl((s)->seqlo); \ 914 (d)->seqhi = htonl((s)->seqhi); \ 915 (d)->seqdiff = htonl((s)->seqdiff); \ 916 (d)->max_win = htons((s)->max_win); \ 917 (d)->mss = htons((s)->mss); \ 918 (d)->state = (s)->state; \ 919 (d)->wscale = (s)->wscale; \ 920 if ((s)->scrub) { \ 921 (d)->scrub.pfss_flags = \ 922 htons((s)->scrub->pfss_flags & PFSS_TIMESTAMP); \ 923 (d)->scrub.pfss_ttl = (s)->scrub->pfss_ttl; \ 924 (d)->scrub.pfss_ts_mod = htonl((s)->scrub->pfss_ts_mod);\ 925 (d)->scrub.scrub_flag = PFSYNC_SCRUB_FLAG_VALID; \ 926 } \ 927 } while (0) 928 929 #define pf_state_peer_ntoh(s,d) do { \ 930 (d)->seqlo = ntohl((s)->seqlo); \ 931 (d)->seqhi = ntohl((s)->seqhi); \ 932 (d)->seqdiff = ntohl((s)->seqdiff); \ 933 (d)->max_win = ntohs((s)->max_win); \ 934 (d)->mss = ntohs((s)->mss); \ 935 (d)->state = (s)->state; \ 936 (d)->wscale = (s)->wscale; \ 937 if ((s)->scrub.scrub_flag == PFSYNC_SCRUB_FLAG_VALID && \ 938 (d)->scrub != NULL) { \ 939 (d)->scrub->pfss_flags = \ 940 ntohs((s)->scrub.pfss_flags) & PFSS_TIMESTAMP; \ 941 (d)->scrub->pfss_ttl = (s)->scrub.pfss_ttl; \ 942 (d)->scrub->pfss_ts_mod = ntohl((s)->scrub.pfss_ts_mod);\ 943 } \ 944 } while (0) 945 946 #define pf_state_counter_hton(s,d) do { \ 947 d[0] = htonl((s>>32)&0xffffffff); \ 948 d[1] = htonl(s&0xffffffff); \ 949 } while (0) 950 951 #define pf_state_counter_from_pfsync(s) \ 952 (((u_int64_t)(s[0])<<32) | (u_int64_t)(s[1])) 953 954 #define pf_state_counter_ntoh(s,d) do { \ 955 d = ntohl(s[0]); \ 956 d = d<<32; \ 957 d += ntohl(s[1]); \ 958 } while (0) 959 960 TAILQ_HEAD(pf_rulequeue, pf_rule); 961 962 struct pf_anchor; 963 964 struct pf_ruleset { 965 struct { 966 struct pf_rulequeue queues[2]; 967 struct { 968 struct pf_rulequeue *ptr; 969 struct pf_rule **ptr_array; 970 u_int32_t rcount; 971 u_int32_t ticket; 972 int open; 973 } active, inactive; 974 } rules[PF_RULESET_MAX]; 975 struct pf_anchor *anchor; 976 u_int32_t tticket; 977 int tables; 978 int topen; 979 }; 980 981 RB_HEAD(pf_anchor_global, pf_anchor); 982 RB_HEAD(pf_anchor_node, pf_anchor); 983 struct pf_anchor { 984 RB_ENTRY(pf_anchor) entry_global; 985 RB_ENTRY(pf_anchor) entry_node; 986 struct pf_anchor *parent; 987 struct pf_anchor_node children; 988 char name[PF_ANCHOR_NAME_SIZE]; 989 char path[MAXPATHLEN]; 990 struct pf_ruleset ruleset; 991 int refcnt; /* anchor rules */ 992 int match; /* XXX: used for pfctl black magic */ 993 }; 994 RB_PROTOTYPE(pf_anchor_global, pf_anchor, entry_global, pf_anchor_compare); 995 RB_PROTOTYPE(pf_anchor_node, pf_anchor, entry_node, pf_anchor_compare); 996 997 #define PF_RESERVED_ANCHOR "_pf" 998 999 #define PFR_TFLAG_PERSIST 0x00000001 1000 #define PFR_TFLAG_CONST 0x00000002 1001 #define PFR_TFLAG_ACTIVE 0x00000004 1002 #define PFR_TFLAG_INACTIVE 0x00000008 1003 #define PFR_TFLAG_REFERENCED 0x00000010 1004 #define PFR_TFLAG_REFDANCHOR 0x00000020 1005 #define PFR_TFLAG_COUNTERS 0x00000040 1006 /* Adjust masks below when adding flags. */ 1007 #define PFR_TFLAG_USRMASK (PFR_TFLAG_PERSIST | \ 1008 PFR_TFLAG_CONST | \ 1009 PFR_TFLAG_COUNTERS) 1010 #define PFR_TFLAG_SETMASK (PFR_TFLAG_ACTIVE | \ 1011 PFR_TFLAG_INACTIVE | \ 1012 PFR_TFLAG_REFERENCED | \ 1013 PFR_TFLAG_REFDANCHOR) 1014 #define PFR_TFLAG_ALLMASK (PFR_TFLAG_PERSIST | \ 1015 PFR_TFLAG_CONST | \ 1016 PFR_TFLAG_ACTIVE | \ 1017 PFR_TFLAG_INACTIVE | \ 1018 PFR_TFLAG_REFERENCED | \ 1019 PFR_TFLAG_REFDANCHOR | \ 1020 PFR_TFLAG_COUNTERS) 1021 1022 struct pf_anchor_stackframe; 1023 1024 struct pfr_table { 1025 char pfrt_anchor[MAXPATHLEN]; 1026 char pfrt_name[PF_TABLE_NAME_SIZE]; 1027 u_int32_t pfrt_flags; 1028 u_int8_t pfrt_fback; 1029 }; 1030 1031 enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED, 1032 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE, 1033 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_NOCOUNT, PFR_FB_MAX }; 1034 1035 struct pfr_addr { 1036 union { 1037 struct in_addr _pfra_ip4addr; 1038 struct in6_addr _pfra_ip6addr; 1039 } pfra_u; 1040 u_int8_t pfra_af; 1041 u_int8_t pfra_net; 1042 u_int8_t pfra_not; 1043 u_int8_t pfra_fback; 1044 }; 1045 #define pfra_ip4addr pfra_u._pfra_ip4addr 1046 #define pfra_ip6addr pfra_u._pfra_ip6addr 1047 1048 enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX }; 1049 enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX }; 1050 #define PFR_OP_XPASS PFR_OP_ADDR_MAX 1051 1052 struct pfr_astats { 1053 struct pfr_addr pfras_a; 1054 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1055 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1056 long pfras_tzero; 1057 }; 1058 1059 enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX }; 1060 1061 struct pfr_tstats { 1062 struct pfr_table pfrts_t; 1063 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1064 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1065 u_int64_t pfrts_match; 1066 u_int64_t pfrts_nomatch; 1067 long pfrts_tzero; 1068 int pfrts_cnt; 1069 int pfrts_refcnt[PFR_REFCNT_MAX]; 1070 }; 1071 #define pfrts_name pfrts_t.pfrt_name 1072 #define pfrts_flags pfrts_t.pfrt_flags 1073 1074 #ifndef _SOCKADDR_UNION_DEFINED 1075 #define _SOCKADDR_UNION_DEFINED 1076 union sockaddr_union { 1077 struct sockaddr sa; 1078 struct sockaddr_in sin; 1079 struct sockaddr_in6 sin6; 1080 }; 1081 #endif /* _SOCKADDR_UNION_DEFINED */ 1082 1083 struct pfr_kcounters { 1084 u_int64_t pfrkc_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1085 u_int64_t pfrkc_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1086 }; 1087 1088 SLIST_HEAD(pfr_kentryworkq, pfr_kentry); 1089 struct pfr_kentry { 1090 struct radix_node pfrke_node[2]; 1091 union sockaddr_union pfrke_sa; 1092 SLIST_ENTRY(pfr_kentry) pfrke_workq; 1093 struct pfr_kcounters *pfrke_counters; 1094 long pfrke_tzero; 1095 u_int8_t pfrke_af; 1096 u_int8_t pfrke_net; 1097 u_int8_t pfrke_not; 1098 u_int8_t pfrke_mark; 1099 }; 1100 1101 SLIST_HEAD(pfr_ktableworkq, pfr_ktable); 1102 RB_HEAD(pfr_ktablehead, pfr_ktable); 1103 struct pfr_ktable { 1104 struct pfr_tstats pfrkt_ts; 1105 RB_ENTRY(pfr_ktable) pfrkt_tree; 1106 SLIST_ENTRY(pfr_ktable) pfrkt_workq; 1107 struct radix_node_head *pfrkt_ip4; 1108 struct radix_node_head *pfrkt_ip6; 1109 struct pfr_ktable *pfrkt_shadow; 1110 struct pfr_ktable *pfrkt_root; 1111 struct pf_ruleset *pfrkt_rs; 1112 long pfrkt_larg; 1113 int pfrkt_nflags; 1114 }; 1115 #define pfrkt_t pfrkt_ts.pfrts_t 1116 #define pfrkt_name pfrkt_t.pfrt_name 1117 #define pfrkt_anchor pfrkt_t.pfrt_anchor 1118 #define pfrkt_ruleset pfrkt_t.pfrt_ruleset 1119 #define pfrkt_flags pfrkt_t.pfrt_flags 1120 #define pfrkt_cnt pfrkt_ts.pfrts_cnt 1121 #define pfrkt_refcnt pfrkt_ts.pfrts_refcnt 1122 #define pfrkt_packets pfrkt_ts.pfrts_packets 1123 #define pfrkt_bytes pfrkt_ts.pfrts_bytes 1124 #define pfrkt_match pfrkt_ts.pfrts_match 1125 #define pfrkt_nomatch pfrkt_ts.pfrts_nomatch 1126 #define pfrkt_tzero pfrkt_ts.pfrts_tzero 1127 1128 /* keep synced with pfi_kif, used in RB_FIND */ 1129 struct pfi_kif_cmp { 1130 char pfik_name[IFNAMSIZ]; 1131 }; 1132 1133 struct pfi_kif { 1134 char pfik_name[IFNAMSIZ]; 1135 union { 1136 RB_ENTRY(pfi_kif) _pfik_tree; 1137 LIST_ENTRY(pfi_kif) _pfik_list; 1138 } _pfik_glue; 1139 #define pfik_tree _pfik_glue._pfik_tree 1140 #define pfik_list _pfik_glue._pfik_list 1141 u_int64_t pfik_packets[2][2][2]; 1142 u_int64_t pfik_bytes[2][2][2]; 1143 u_int32_t pfik_tzero; 1144 u_int pfik_flags; 1145 struct ifnet *pfik_ifp; 1146 struct ifg_group *pfik_group; 1147 u_int pfik_rulerefs; 1148 TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs; 1149 }; 1150 1151 #define PFI_IFLAG_REFS 0x0001 /* has state references */ 1152 #define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */ 1153 1154 struct pf_pdesc { 1155 struct { 1156 int done; 1157 uid_t uid; 1158 gid_t gid; 1159 } lookup; 1160 u_int64_t tot_len; /* Make Mickey money */ 1161 union { 1162 struct tcphdr *tcp; 1163 struct udphdr *udp; 1164 struct icmp *icmp; 1165 #ifdef INET6 1166 struct icmp6_hdr *icmp6; 1167 #endif /* INET6 */ 1168 void *any; 1169 } hdr; 1170 1171 struct pf_rule *nat_rule; /* nat/rdr rule applied to packet */ 1172 struct pf_addr *src; /* src address */ 1173 struct pf_addr *dst; /* dst address */ 1174 u_int16_t *sport; 1175 u_int16_t *dport; 1176 struct pf_mtag *pf_mtag; 1177 1178 u_int32_t p_len; /* total length of payload */ 1179 1180 u_int16_t *ip_sum; 1181 u_int16_t *proto_sum; 1182 u_int16_t flags; /* Let SCRUB trigger behavior in 1183 * state code. Easier than tags */ 1184 #define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */ 1185 #define PFDESC_IP_REAS 0x0002 /* IP frags would've been reassembled */ 1186 sa_family_t af; 1187 u_int8_t proto; 1188 u_int8_t tos; 1189 u_int8_t dir; /* direction */ 1190 u_int8_t sidx; /* key index for source */ 1191 u_int8_t didx; /* key index for destination */ 1192 }; 1193 1194 /* flags for RDR options */ 1195 #define PF_DPORT_RANGE 0x01 /* Dest port uses range */ 1196 #define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */ 1197 1198 /* Reasons code for passing/dropping a packet */ 1199 #define PFRES_MATCH 0 /* Explicit match of a rule */ 1200 #define PFRES_BADOFF 1 /* Bad offset for pull_hdr */ 1201 #define PFRES_FRAG 2 /* Dropping following fragment */ 1202 #define PFRES_SHORT 3 /* Dropping short packet */ 1203 #define PFRES_NORM 4 /* Dropping by normalizer */ 1204 #define PFRES_MEMORY 5 /* Dropped due to lacking mem */ 1205 #define PFRES_TS 6 /* Bad TCP Timestamp (RFC1323) */ 1206 #define PFRES_CONGEST 7 /* Congestion (of ipintrq) */ 1207 #define PFRES_IPOPTIONS 8 /* IP option */ 1208 #define PFRES_PROTCKSUM 9 /* Protocol checksum invalid */ 1209 #define PFRES_BADSTATE 10 /* State mismatch */ 1210 #define PFRES_STATEINS 11 /* State insertion failure */ 1211 #define PFRES_MAXSTATES 12 /* State limit */ 1212 #define PFRES_SRCLIMIT 13 /* Source node/conn limit */ 1213 #define PFRES_SYNPROXY 14 /* SYN proxy */ 1214 #define PFRES_MAX 15 /* total+1 */ 1215 1216 #define PFRES_NAMES { \ 1217 "match", \ 1218 "bad-offset", \ 1219 "fragment", \ 1220 "short", \ 1221 "normalize", \ 1222 "memory", \ 1223 "bad-timestamp", \ 1224 "congestion", \ 1225 "ip-option", \ 1226 "proto-cksum", \ 1227 "state-mismatch", \ 1228 "state-insert", \ 1229 "state-limit", \ 1230 "src-limit", \ 1231 "synproxy", \ 1232 NULL \ 1233 } 1234 1235 /* Counters for other things we want to keep track of */ 1236 #define LCNT_STATES 0 /* states */ 1237 #define LCNT_SRCSTATES 1 /* max-src-states */ 1238 #define LCNT_SRCNODES 2 /* max-src-nodes */ 1239 #define LCNT_SRCCONN 3 /* max-src-conn */ 1240 #define LCNT_SRCCONNRATE 4 /* max-src-conn-rate */ 1241 #define LCNT_OVERLOAD_TABLE 5 /* entry added to overload table */ 1242 #define LCNT_OVERLOAD_FLUSH 6 /* state entries flushed */ 1243 #define LCNT_MAX 7 /* total+1 */ 1244 1245 #define LCNT_NAMES { \ 1246 "max states per rule", \ 1247 "max-src-states", \ 1248 "max-src-nodes", \ 1249 "max-src-conn", \ 1250 "max-src-conn-rate", \ 1251 "overload table insertion", \ 1252 "overload flush states", \ 1253 NULL \ 1254 } 1255 1256 /* UDP state enumeration */ 1257 #define PFUDPS_NO_TRAFFIC 0 1258 #define PFUDPS_SINGLE 1 1259 #define PFUDPS_MULTIPLE 2 1260 1261 #define PFUDPS_NSTATES 3 /* number of state levels */ 1262 1263 #define PFUDPS_NAMES { \ 1264 "NO_TRAFFIC", \ 1265 "SINGLE", \ 1266 "MULTIPLE", \ 1267 NULL \ 1268 } 1269 1270 /* Other protocol state enumeration */ 1271 #define PFOTHERS_NO_TRAFFIC 0 1272 #define PFOTHERS_SINGLE 1 1273 #define PFOTHERS_MULTIPLE 2 1274 1275 #define PFOTHERS_NSTATES 3 /* number of state levels */ 1276 1277 #define PFOTHERS_NAMES { \ 1278 "NO_TRAFFIC", \ 1279 "SINGLE", \ 1280 "MULTIPLE", \ 1281 NULL \ 1282 } 1283 1284 #define FCNT_STATE_SEARCH 0 1285 #define FCNT_STATE_INSERT 1 1286 #define FCNT_STATE_REMOVALS 2 1287 #define FCNT_MAX 3 1288 1289 #define SCNT_SRC_NODE_SEARCH 0 1290 #define SCNT_SRC_NODE_INSERT 1 1291 #define SCNT_SRC_NODE_REMOVALS 2 1292 #define SCNT_MAX 3 1293 1294 #define ACTION_SET(a, x) \ 1295 do { \ 1296 if ((a) != NULL) \ 1297 *(a) = (x); \ 1298 } while (0) 1299 1300 #define REASON_SET(a, x) \ 1301 do { \ 1302 if ((a) != NULL) \ 1303 *(a) = (x); \ 1304 if (x < PFRES_MAX) \ 1305 V_pf_status.counters[x]++; \ 1306 } while (0) 1307 1308 struct pf_status { 1309 u_int64_t counters[PFRES_MAX]; 1310 u_int64_t lcounters[LCNT_MAX]; /* limit counters */ 1311 u_int64_t fcounters[FCNT_MAX]; 1312 u_int64_t scounters[SCNT_MAX]; 1313 u_int64_t pcounters[2][2][3]; 1314 u_int64_t bcounters[2][2]; 1315 u_int32_t running; 1316 u_int32_t states; 1317 u_int32_t src_nodes; 1318 u_int32_t since; 1319 u_int32_t debug; 1320 u_int32_t hostid; 1321 char ifname[IFNAMSIZ]; 1322 u_int8_t pf_chksum[PF_MD5_DIGEST_LENGTH]; 1323 }; 1324 1325 struct cbq_opts { 1326 u_int minburst; 1327 u_int maxburst; 1328 u_int pktsize; 1329 u_int maxpktsize; 1330 u_int ns_per_byte; 1331 u_int maxidle; 1332 int minidle; 1333 u_int offtime; 1334 int flags; 1335 }; 1336 1337 struct priq_opts { 1338 int flags; 1339 }; 1340 1341 struct hfsc_opts { 1342 /* real-time service curve */ 1343 u_int rtsc_m1; /* slope of the 1st segment in bps */ 1344 u_int rtsc_d; /* the x-projection of m1 in msec */ 1345 u_int rtsc_m2; /* slope of the 2nd segment in bps */ 1346 /* link-sharing service curve */ 1347 u_int lssc_m1; 1348 u_int lssc_d; 1349 u_int lssc_m2; 1350 /* upper-limit service curve */ 1351 u_int ulsc_m1; 1352 u_int ulsc_d; 1353 u_int ulsc_m2; 1354 int flags; 1355 }; 1356 1357 struct pf_altq { 1358 char ifname[IFNAMSIZ]; 1359 1360 void *altq_disc; /* discipline-specific state */ 1361 TAILQ_ENTRY(pf_altq) entries; 1362 1363 /* scheduler spec */ 1364 u_int8_t scheduler; /* scheduler type */ 1365 u_int16_t tbrsize; /* tokenbucket regulator size */ 1366 u_int32_t ifbandwidth; /* interface bandwidth */ 1367 1368 /* queue spec */ 1369 char qname[PF_QNAME_SIZE]; /* queue name */ 1370 char parent[PF_QNAME_SIZE]; /* parent name */ 1371 u_int32_t parent_qid; /* parent queue id */ 1372 u_int32_t bandwidth; /* queue bandwidth */ 1373 u_int8_t priority; /* priority */ 1374 u_int8_t local_flags; /* dynamic interface */ 1375 #define PFALTQ_FLAG_IF_REMOVED 0x01 1376 1377 u_int16_t qlimit; /* queue size limit */ 1378 u_int16_t flags; /* misc flags */ 1379 union { 1380 struct cbq_opts cbq_opts; 1381 struct priq_opts priq_opts; 1382 struct hfsc_opts hfsc_opts; 1383 } pq_u; 1384 1385 u_int32_t qid; /* return value */ 1386 }; 1387 1388 struct pf_divert { 1389 union { 1390 struct in_addr ipv4; 1391 struct in6_addr ipv6; 1392 } addr; 1393 u_int16_t port; 1394 }; 1395 1396 #define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */ 1397 #define PFR_KENTRY_HIWAT 200000 /* Number of table entries */ 1398 1399 /* 1400 * ioctl parameter structures 1401 */ 1402 1403 struct pfioc_pooladdr { 1404 u_int32_t action; 1405 u_int32_t ticket; 1406 u_int32_t nr; 1407 u_int32_t r_num; 1408 u_int8_t r_action; 1409 u_int8_t r_last; 1410 u_int8_t af; 1411 char anchor[MAXPATHLEN]; 1412 struct pf_pooladdr addr; 1413 }; 1414 1415 struct pfioc_rule { 1416 u_int32_t action; 1417 u_int32_t ticket; 1418 u_int32_t pool_ticket; 1419 u_int32_t nr; 1420 char anchor[MAXPATHLEN]; 1421 char anchor_call[MAXPATHLEN]; 1422 struct pf_rule rule; 1423 }; 1424 1425 struct pfioc_natlook { 1426 struct pf_addr saddr; 1427 struct pf_addr daddr; 1428 struct pf_addr rsaddr; 1429 struct pf_addr rdaddr; 1430 u_int16_t sport; 1431 u_int16_t dport; 1432 u_int16_t rsport; 1433 u_int16_t rdport; 1434 sa_family_t af; 1435 u_int8_t proto; 1436 u_int8_t direction; 1437 }; 1438 1439 struct pfioc_state { 1440 struct pfsync_state state; 1441 }; 1442 1443 struct pfioc_src_node_kill { 1444 sa_family_t psnk_af; 1445 struct pf_rule_addr psnk_src; 1446 struct pf_rule_addr psnk_dst; 1447 u_int psnk_killed; 1448 }; 1449 1450 struct pfioc_state_kill { 1451 struct pf_state_cmp psk_pfcmp; 1452 sa_family_t psk_af; 1453 int psk_proto; 1454 struct pf_rule_addr psk_src; 1455 struct pf_rule_addr psk_dst; 1456 char psk_ifname[IFNAMSIZ]; 1457 char psk_label[PF_RULE_LABEL_SIZE]; 1458 u_int psk_killed; 1459 }; 1460 1461 struct pfioc_states { 1462 int ps_len; 1463 union { 1464 caddr_t psu_buf; 1465 struct pfsync_state *psu_states; 1466 } ps_u; 1467 #define ps_buf ps_u.psu_buf 1468 #define ps_states ps_u.psu_states 1469 }; 1470 1471 struct pfioc_src_nodes { 1472 int psn_len; 1473 union { 1474 caddr_t psu_buf; 1475 struct pf_src_node *psu_src_nodes; 1476 } psn_u; 1477 #define psn_buf psn_u.psu_buf 1478 #define psn_src_nodes psn_u.psu_src_nodes 1479 }; 1480 1481 struct pfioc_if { 1482 char ifname[IFNAMSIZ]; 1483 }; 1484 1485 struct pfioc_tm { 1486 int timeout; 1487 int seconds; 1488 }; 1489 1490 struct pfioc_limit { 1491 int index; 1492 unsigned limit; 1493 }; 1494 1495 struct pfioc_altq { 1496 u_int32_t action; 1497 u_int32_t ticket; 1498 u_int32_t nr; 1499 struct pf_altq altq; 1500 }; 1501 1502 struct pfioc_qstats { 1503 u_int32_t ticket; 1504 u_int32_t nr; 1505 void *buf; 1506 int nbytes; 1507 u_int8_t scheduler; 1508 }; 1509 1510 struct pfioc_ruleset { 1511 u_int32_t nr; 1512 char path[MAXPATHLEN]; 1513 char name[PF_ANCHOR_NAME_SIZE]; 1514 }; 1515 1516 #define PF_RULESET_ALTQ (PF_RULESET_MAX) 1517 #define PF_RULESET_TABLE (PF_RULESET_MAX+1) 1518 struct pfioc_trans { 1519 int size; /* number of elements */ 1520 int esize; /* size of each element in bytes */ 1521 struct pfioc_trans_e { 1522 int rs_num; 1523 char anchor[MAXPATHLEN]; 1524 u_int32_t ticket; 1525 } *array; 1526 }; 1527 1528 #define PFR_FLAG_ATOMIC 0x00000001 /* unused */ 1529 #define PFR_FLAG_DUMMY 0x00000002 1530 #define PFR_FLAG_FEEDBACK 0x00000004 1531 #define PFR_FLAG_CLSTATS 0x00000008 1532 #define PFR_FLAG_ADDRSTOO 0x00000010 1533 #define PFR_FLAG_REPLACE 0x00000020 1534 #define PFR_FLAG_ALLRSETS 0x00000040 1535 #define PFR_FLAG_ALLMASK 0x0000007F 1536 #ifdef _KERNEL 1537 #define PFR_FLAG_USERIOCTL 0x10000000 1538 #endif 1539 1540 struct pfioc_table { 1541 struct pfr_table pfrio_table; 1542 void *pfrio_buffer; 1543 int pfrio_esize; 1544 int pfrio_size; 1545 int pfrio_size2; 1546 int pfrio_nadd; 1547 int pfrio_ndel; 1548 int pfrio_nchange; 1549 int pfrio_flags; 1550 u_int32_t pfrio_ticket; 1551 }; 1552 #define pfrio_exists pfrio_nadd 1553 #define pfrio_nzero pfrio_nadd 1554 #define pfrio_nmatch pfrio_nadd 1555 #define pfrio_naddr pfrio_size2 1556 #define pfrio_setflag pfrio_size2 1557 #define pfrio_clrflag pfrio_nadd 1558 1559 struct pfioc_iface { 1560 char pfiio_name[IFNAMSIZ]; 1561 void *pfiio_buffer; 1562 int pfiio_esize; 1563 int pfiio_size; 1564 int pfiio_nzero; 1565 int pfiio_flags; 1566 }; 1567 1568 1569 /* 1570 * ioctl operations 1571 */ 1572 1573 #define DIOCSTART _IO ('D', 1) 1574 #define DIOCSTOP _IO ('D', 2) 1575 #define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule) 1576 #define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule) 1577 #define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule) 1578 /* XXX cut 8 - 17 */ 1579 #define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill) 1580 #define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state) 1581 #define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if) 1582 #define DIOCGETSTATUS _IOWR('D', 21, struct pf_status) 1583 #define DIOCCLRSTATUS _IO ('D', 22) 1584 #define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook) 1585 #define DIOCSETDEBUG _IOWR('D', 24, u_int32_t) 1586 #define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states) 1587 #define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule) 1588 /* XXX cut 26 - 28 */ 1589 #define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm) 1590 #define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm) 1591 #define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state) 1592 #define DIOCCLRRULECTRS _IO ('D', 38) 1593 #define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit) 1594 #define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit) 1595 #define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill) 1596 #define DIOCSTARTALTQ _IO ('D', 42) 1597 #define DIOCSTOPALTQ _IO ('D', 43) 1598 #define DIOCADDALTQ _IOWR('D', 45, struct pfioc_altq) 1599 #define DIOCGETALTQS _IOWR('D', 47, struct pfioc_altq) 1600 #define DIOCGETALTQ _IOWR('D', 48, struct pfioc_altq) 1601 #define DIOCCHANGEALTQ _IOWR('D', 49, struct pfioc_altq) 1602 #define DIOCGETQSTATS _IOWR('D', 50, struct pfioc_qstats) 1603 #define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr) 1604 #define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr) 1605 #define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr) 1606 #define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr) 1607 #define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr) 1608 /* XXX cut 55 - 57 */ 1609 #define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset) 1610 #define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset) 1611 #define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table) 1612 #define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table) 1613 #define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table) 1614 #define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table) 1615 #define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table) 1616 #define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table) 1617 #define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table) 1618 #define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table) 1619 #define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table) 1620 #define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table) 1621 #define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table) 1622 #define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table) 1623 #define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table) 1624 #define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table) 1625 #define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table) 1626 #define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table) 1627 #define DIOCOSFPFLUSH _IO('D', 78) 1628 #define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl) 1629 #define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl) 1630 #define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans) 1631 #define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans) 1632 #define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans) 1633 #define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes) 1634 #define DIOCCLRSRCNODES _IO('D', 85) 1635 #define DIOCSETHOSTID _IOWR('D', 86, u_int32_t) 1636 #define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface) 1637 #define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface) 1638 #define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface) 1639 #define DIOCKILLSRCNODES _IOWR('D', 91, struct pfioc_src_node_kill) 1640 struct pf_ifspeed { 1641 char ifname[IFNAMSIZ]; 1642 u_int32_t baudrate; 1643 }; 1644 #define DIOCGIFSPEED _IOWR('D', 92, struct pf_ifspeed) 1645 1646 #ifdef _KERNEL 1647 struct pf_srchash { 1648 LIST_HEAD(, pf_src_node) nodes; 1649 struct mtx lock; 1650 }; 1651 1652 struct pf_keyhash { 1653 LIST_HEAD(, pf_state_key) keys; 1654 struct mtx lock; 1655 }; 1656 1657 struct pf_idhash { 1658 LIST_HEAD(, pf_state) states; 1659 struct mtx lock; 1660 }; 1661 1662 #define PF_HASHSIZ (32768) 1663 VNET_DECLARE(struct pf_keyhash *, pf_keyhash); 1664 VNET_DECLARE(struct pf_idhash *, pf_idhash); 1665 VNET_DECLARE(u_long, pf_hashmask); 1666 #define V_pf_keyhash VNET(pf_keyhash) 1667 #define V_pf_idhash VNET(pf_idhash) 1668 #define V_pf_hashmask VNET(pf_hashmask) 1669 VNET_DECLARE(struct pf_srchash *, pf_srchash); 1670 VNET_DECLARE(u_long, pf_srchashmask); 1671 #define V_pf_srchash VNET(pf_srchash) 1672 #define V_pf_srchashmask VNET(pf_srchashmask) 1673 1674 #define PF_IDHASH(s) (be64toh((s)->id) % (V_pf_hashmask + 1)) 1675 1676 VNET_DECLARE(void *, pf_swi_cookie); 1677 #define V_pf_swi_cookie VNET(pf_swi_cookie) 1678 1679 VNET_DECLARE(uint64_t, pf_stateid[MAXCPU]); 1680 #define V_pf_stateid VNET(pf_stateid) 1681 1682 TAILQ_HEAD(pf_altqqueue, pf_altq); 1683 VNET_DECLARE(struct pf_altqqueue, pf_altqs[2]); 1684 #define V_pf_altqs VNET(pf_altqs) 1685 VNET_DECLARE(struct pf_palist, pf_pabuf); 1686 #define V_pf_pabuf VNET(pf_pabuf) 1687 1688 VNET_DECLARE(u_int32_t, ticket_altqs_active); 1689 #define V_ticket_altqs_active VNET(ticket_altqs_active) 1690 VNET_DECLARE(u_int32_t, ticket_altqs_inactive); 1691 #define V_ticket_altqs_inactive VNET(ticket_altqs_inactive) 1692 VNET_DECLARE(int, altqs_inactive_open); 1693 #define V_altqs_inactive_open VNET(altqs_inactive_open) 1694 VNET_DECLARE(u_int32_t, ticket_pabuf); 1695 #define V_ticket_pabuf VNET(ticket_pabuf) 1696 VNET_DECLARE(struct pf_altqqueue *, pf_altqs_active); 1697 #define V_pf_altqs_active VNET(pf_altqs_active) 1698 VNET_DECLARE(struct pf_altqqueue *, pf_altqs_inactive); 1699 #define V_pf_altqs_inactive VNET(pf_altqs_inactive) 1700 1701 VNET_DECLARE(struct pf_rulequeue, pf_unlinked_rules); 1702 #define V_pf_unlinked_rules VNET(pf_unlinked_rules) 1703 1704 void pf_initialize(void); 1705 void pf_cleanup(void); 1706 1707 struct pf_mtag *pf_get_mtag(struct mbuf *); 1708 1709 extern void pf_calc_skip_steps(struct pf_rulequeue *); 1710 #ifdef ALTQ 1711 extern void pf_altq_ifnet_event(struct ifnet *, int); 1712 #endif 1713 VNET_DECLARE(uma_zone_t, pf_state_z); 1714 #define V_pf_state_z VNET(pf_state_z) 1715 VNET_DECLARE(uma_zone_t, pf_state_key_z); 1716 #define V_pf_state_key_z VNET(pf_state_key_z) 1717 VNET_DECLARE(uma_zone_t, pf_state_scrub_z); 1718 #define V_pf_state_scrub_z VNET(pf_state_scrub_z) 1719 1720 extern void pf_purge_thread(void *); 1721 extern void pf_intr(void *); 1722 extern void pf_purge_expired_src_nodes(void); 1723 1724 extern int pf_unlink_state(struct pf_state *, u_int); 1725 #define PF_ENTER_LOCKED 0x00000001 1726 #define PF_RETURN_LOCKED 0x00000002 1727 extern int pf_state_insert(struct pfi_kif *, 1728 struct pf_state_key *, 1729 struct pf_state_key *, 1730 struct pf_state *); 1731 extern void pf_free_state(struct pf_state *); 1732 1733 static __inline void 1734 pf_ref_state(struct pf_state *s) 1735 { 1736 1737 refcount_acquire(&s->refs); 1738 } 1739 1740 static __inline int 1741 pf_release_state(struct pf_state *s) 1742 { 1743 1744 if (refcount_release(&s->refs)) { 1745 pf_free_state(s); 1746 return (1); 1747 } else 1748 return (0); 1749 } 1750 1751 extern struct pf_state *pf_find_state_byid(uint64_t, uint32_t); 1752 extern struct pf_state *pf_find_state_all(struct pf_state_key_cmp *, 1753 u_int, int *); 1754 struct pf_src_node *pf_find_src_node(struct pf_addr *, struct pf_rule *, 1755 sa_family_t, int); 1756 extern void pf_print_state(struct pf_state *); 1757 extern void pf_print_flags(u_int8_t); 1758 extern u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t, 1759 u_int8_t); 1760 1761 VNET_DECLARE(struct ifnet *, sync_ifp); 1762 #define V_sync_ifp VNET(sync_ifp); 1763 VNET_DECLARE(struct pf_rule, pf_default_rule); 1764 #define V_pf_default_rule VNET(pf_default_rule) 1765 extern void pf_addrcpy(struct pf_addr *, struct pf_addr *, 1766 u_int8_t); 1767 void pf_free_rule(struct pf_rule *); 1768 1769 #ifdef INET 1770 int pf_test(int, struct ifnet *, struct mbuf **, struct inpcb *); 1771 #endif /* INET */ 1772 1773 #ifdef INET6 1774 int pf_test6(int, struct ifnet *, struct mbuf **, struct inpcb *); 1775 void pf_poolmask(struct pf_addr *, struct pf_addr*, 1776 struct pf_addr *, struct pf_addr *, u_int8_t); 1777 void pf_addr_inc(struct pf_addr *, sa_family_t); 1778 #endif /* INET6 */ 1779 1780 u_int32_t pf_new_isn(struct pf_state *); 1781 void *pf_pull_hdr(struct mbuf *, int, void *, int, u_short *, u_short *, 1782 sa_family_t); 1783 void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t); 1784 void pf_send_deferred_syn(struct pf_state *); 1785 int pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *, 1786 struct pf_addr *, sa_family_t); 1787 int pf_match_addr_range(struct pf_addr *, struct pf_addr *, 1788 struct pf_addr *, sa_family_t); 1789 int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t); 1790 1791 void pf_normalize_init(void); 1792 void pf_normalize_cleanup(void); 1793 int pf_normalize_ip(struct mbuf **, int, struct pfi_kif *, u_short *, 1794 struct pf_pdesc *); 1795 int pf_normalize_ip6(struct mbuf **, int, struct pfi_kif *, u_short *, 1796 struct pf_pdesc *); 1797 int pf_normalize_tcp(int, struct pfi_kif *, struct mbuf *, int, int, void *, 1798 struct pf_pdesc *); 1799 void pf_normalize_tcp_cleanup(struct pf_state *); 1800 int pf_normalize_tcp_init(struct mbuf *, int, struct pf_pdesc *, 1801 struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *); 1802 int pf_normalize_tcp_stateful(struct mbuf *, int, struct pf_pdesc *, 1803 u_short *, struct tcphdr *, struct pf_state *, 1804 struct pf_state_peer *, struct pf_state_peer *, int *); 1805 u_int32_t 1806 pf_state_expires(const struct pf_state *); 1807 void pf_purge_expired_fragments(void); 1808 int pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kif *, 1809 int); 1810 int pf_socket_lookup(int, struct pf_pdesc *, struct mbuf *); 1811 struct pf_state_key *pf_alloc_state_key(int); 1812 void pfr_initialize(void); 1813 void pfr_cleanup(void); 1814 int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t); 1815 void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t, 1816 u_int64_t, int, int, int); 1817 int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, sa_family_t); 1818 void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *); 1819 struct pfr_ktable * 1820 pfr_attach_table(struct pf_ruleset *, char *); 1821 void pfr_detach_table(struct pfr_ktable *); 1822 int pfr_clr_tables(struct pfr_table *, int *, int); 1823 int pfr_add_tables(struct pfr_table *, int, int *, int); 1824 int pfr_del_tables(struct pfr_table *, int, int *, int); 1825 int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int); 1826 int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int); 1827 int pfr_clr_tstats(struct pfr_table *, int, int *, int); 1828 int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int); 1829 int pfr_clr_addrs(struct pfr_table *, int *, int); 1830 int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *, long); 1831 int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1832 int); 1833 int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1834 int); 1835 int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1836 int *, int *, int *, int, u_int32_t); 1837 int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int); 1838 int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int); 1839 int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *, 1840 int); 1841 int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1842 int); 1843 int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int); 1844 int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int); 1845 int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int); 1846 int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *, 1847 int *, u_int32_t, int); 1848 1849 MALLOC_DECLARE(PFI_MTYPE); 1850 VNET_DECLARE(struct pfi_kif *, pfi_all); 1851 #define V_pfi_all VNET(pfi_all) 1852 1853 void pfi_initialize(void); 1854 void pfi_cleanup(void); 1855 void pfi_kif_ref(struct pfi_kif *); 1856 void pfi_kif_unref(struct pfi_kif *); 1857 struct pfi_kif *pfi_kif_find(const char *); 1858 struct pfi_kif *pfi_kif_attach(struct pfi_kif *, const char *); 1859 int pfi_kif_match(struct pfi_kif *, struct pfi_kif *); 1860 void pfi_kif_purge(void); 1861 int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *, 1862 sa_family_t); 1863 int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t); 1864 void pfi_dynaddr_remove(struct pfi_dynaddr *); 1865 void pfi_dynaddr_copyout(struct pf_addr_wrap *); 1866 void pfi_update_status(const char *, struct pf_status *); 1867 void pfi_get_ifaces(const char *, struct pfi_kif *, int *); 1868 int pfi_set_flags(const char *, int); 1869 int pfi_clear_flags(const char *, int); 1870 1871 int pf_match_tag(struct mbuf *, struct pf_rule *, int *, int); 1872 int pf_tag_packet(struct mbuf *, struct pf_pdesc *, int); 1873 void pf_qid2qname(u_int32_t, char *); 1874 1875 VNET_DECLARE(struct pf_status, pf_status); 1876 #define V_pf_status VNET(pf_status) 1877 1878 struct pf_limit { 1879 uma_zone_t zone; 1880 u_int limit; 1881 }; 1882 VNET_DECLARE(struct pf_limit, pf_limits[PF_LIMIT_MAX]); 1883 #define V_pf_limits VNET(pf_limits) 1884 1885 #endif /* _KERNEL */ 1886 1887 #ifdef _KERNEL 1888 VNET_DECLARE(struct pf_anchor_global, pf_anchors); 1889 #define V_pf_anchors VNET(pf_anchors) 1890 VNET_DECLARE(struct pf_anchor, pf_main_anchor); 1891 #define V_pf_main_anchor VNET(pf_main_anchor) 1892 #define pf_main_ruleset V_pf_main_anchor.ruleset 1893 #endif 1894 1895 /* these ruleset functions can be linked into userland programs (pfctl) */ 1896 int pf_get_ruleset_number(u_int8_t); 1897 void pf_init_ruleset(struct pf_ruleset *); 1898 int pf_anchor_setup(struct pf_rule *, 1899 const struct pf_ruleset *, const char *); 1900 int pf_anchor_copyout(const struct pf_ruleset *, 1901 const struct pf_rule *, struct pfioc_rule *); 1902 void pf_anchor_remove(struct pf_rule *); 1903 void pf_remove_if_empty_ruleset(struct pf_ruleset *); 1904 struct pf_ruleset *pf_find_ruleset(const char *); 1905 struct pf_ruleset *pf_find_or_create_ruleset(const char *); 1906 void pf_rs_initialize(void); 1907 1908 /* The fingerprint functions can be linked into userland programs (tcpdump) */ 1909 int pf_osfp_add(struct pf_osfp_ioctl *); 1910 #ifdef _KERNEL 1911 struct pf_osfp_enlist * 1912 pf_osfp_fingerprint(struct pf_pdesc *, struct mbuf *, int, 1913 const struct tcphdr *); 1914 #endif /* _KERNEL */ 1915 void pf_osfp_flush(void); 1916 int pf_osfp_get(struct pf_osfp_ioctl *); 1917 int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t); 1918 1919 #ifdef _KERNEL 1920 void pf_print_host(struct pf_addr *, u_int16_t, u_int8_t); 1921 1922 void pf_step_into_anchor(struct pf_anchor_stackframe *, int *, 1923 struct pf_ruleset **, int, struct pf_rule **, 1924 struct pf_rule **, int *); 1925 int pf_step_out_of_anchor(struct pf_anchor_stackframe *, int *, 1926 struct pf_ruleset **, int, struct pf_rule **, 1927 struct pf_rule **, int *); 1928 1929 int pf_map_addr(u_int8_t, struct pf_rule *, 1930 struct pf_addr *, struct pf_addr *, 1931 struct pf_addr *, struct pf_src_node **); 1932 struct pf_rule *pf_get_translation(struct pf_pdesc *, struct mbuf *, 1933 int, int, struct pfi_kif *, struct pf_src_node **, 1934 struct pf_state_key **, struct pf_state_key **, 1935 struct pf_addr *, struct pf_addr *, 1936 uint16_t, uint16_t, struct pf_anchor_stackframe *); 1937 1938 struct pf_state_key *pf_state_key_setup(struct pf_pdesc *, struct pf_addr *, 1939 struct pf_addr *, u_int16_t, u_int16_t); 1940 struct pf_state_key *pf_state_key_clone(struct pf_state_key *); 1941 #endif /* _KERNEL */ 1942 1943 #endif /* _NET_PFVAR_H_ */
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