1 /* $OpenBSD: pfvar.h,v 1.282 2009/01/29 15:12:28 pyr Exp $ */ 2 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 */ 32 33 #ifndef _NET_PFVAR_H_ 34 #define _NET_PFVAR_H_ 35 36 #include <sys/param.h> 37 #include <sys/types.h> 38 #include <sys/queue.h> 39 #include <sys/tree.h> 40 #ifdef __FreeBSD__ 41 #include <sys/lock.h> 42 #include <sys/sx.h> 43 #else 44 #include <sys/rwlock.h> 45 #endif 46 47 #include <net/radix.h> 48 #include <net/route.h> 49 #ifdef __FreeBSD__ 50 #include <net/if_clone.h> 51 #include <net/pf_mtag.h> 52 #include <vm/uma.h> 53 #else 54 #include <netinet/ip_ipsp.h> 55 #endif 56 57 #ifdef __FreeBSD__ 58 #include <netinet/in.h> 59 #endif 60 61 #include <netinet/tcp_fsm.h> 62 63 struct ip; 64 struct ip6_hdr; 65 #ifdef __FreeBSD__ 66 struct inpcb; 67 #endif 68 69 #define PF_TCPS_PROXY_SRC ((TCP_NSTATES)+0) 70 #define PF_TCPS_PROXY_DST ((TCP_NSTATES)+1) 71 72 #define PF_MD5_DIGEST_LENGTH 16 73 #ifdef MD5_DIGEST_LENGTH 74 #if PF_MD5_DIGEST_LENGTH != MD5_DIGEST_LENGTH 75 #error 76 #endif 77 #endif 78 79 enum { PF_INOUT, PF_IN, PF_OUT }; 80 enum { PF_PASS, PF_DROP, PF_SCRUB, PF_NOSCRUB, PF_NAT, PF_NONAT, 81 PF_BINAT, PF_NOBINAT, PF_RDR, PF_NORDR, PF_SYNPROXY_DROP, PF_DEFER }; 82 enum { PF_RULESET_SCRUB, PF_RULESET_FILTER, PF_RULESET_NAT, 83 PF_RULESET_BINAT, PF_RULESET_RDR, PF_RULESET_MAX }; 84 enum { PF_OP_NONE, PF_OP_IRG, PF_OP_EQ, PF_OP_NE, PF_OP_LT, 85 PF_OP_LE, PF_OP_GT, PF_OP_GE, PF_OP_XRG, PF_OP_RRG }; 86 enum { PF_DEBUG_NONE, PF_DEBUG_URGENT, PF_DEBUG_MISC, PF_DEBUG_NOISY }; 87 enum { PF_CHANGE_NONE, PF_CHANGE_ADD_HEAD, PF_CHANGE_ADD_TAIL, 88 PF_CHANGE_ADD_BEFORE, PF_CHANGE_ADD_AFTER, 89 PF_CHANGE_REMOVE, PF_CHANGE_GET_TICKET }; 90 enum { PF_GET_NONE, PF_GET_CLR_CNTR }; 91 enum { PF_SK_WIRE, PF_SK_STACK, PF_SK_BOTH }; 92 93 /* 94 * Note about PFTM_*: real indices into pf_rule.timeout[] come before 95 * PFTM_MAX, special cases afterwards. See pf_state_expires(). 96 */ 97 enum { PFTM_TCP_FIRST_PACKET, PFTM_TCP_OPENING, PFTM_TCP_ESTABLISHED, 98 PFTM_TCP_CLOSING, PFTM_TCP_FIN_WAIT, PFTM_TCP_CLOSED, 99 PFTM_UDP_FIRST_PACKET, PFTM_UDP_SINGLE, PFTM_UDP_MULTIPLE, 100 PFTM_ICMP_FIRST_PACKET, PFTM_ICMP_ERROR_REPLY, 101 PFTM_OTHER_FIRST_PACKET, PFTM_OTHER_SINGLE, 102 PFTM_OTHER_MULTIPLE, PFTM_FRAG, PFTM_INTERVAL, 103 PFTM_ADAPTIVE_START, PFTM_ADAPTIVE_END, PFTM_SRC_NODE, 104 PFTM_TS_DIFF, PFTM_MAX, PFTM_PURGE, PFTM_UNLINKED, 105 PFTM_UNTIL_PACKET }; 106 107 /* PFTM default values */ 108 #define PFTM_TCP_FIRST_PACKET_VAL 120 /* First TCP packet */ 109 #define PFTM_TCP_OPENING_VAL 30 /* No response yet */ 110 #define PFTM_TCP_ESTABLISHED_VAL 24*60*60/* Established */ 111 #define PFTM_TCP_CLOSING_VAL 15 * 60 /* Half closed */ 112 #define PFTM_TCP_FIN_WAIT_VAL 45 /* Got both FINs */ 113 #define PFTM_TCP_CLOSED_VAL 90 /* Got a RST */ 114 #define PFTM_UDP_FIRST_PACKET_VAL 60 /* First UDP packet */ 115 #define PFTM_UDP_SINGLE_VAL 30 /* Unidirectional */ 116 #define PFTM_UDP_MULTIPLE_VAL 60 /* Bidirectional */ 117 #define PFTM_ICMP_FIRST_PACKET_VAL 20 /* First ICMP packet */ 118 #define PFTM_ICMP_ERROR_REPLY_VAL 10 /* Got error response */ 119 #define PFTM_OTHER_FIRST_PACKET_VAL 60 /* First packet */ 120 #define PFTM_OTHER_SINGLE_VAL 30 /* Unidirectional */ 121 #define PFTM_OTHER_MULTIPLE_VAL 60 /* Bidirectional */ 122 #define PFTM_FRAG_VAL 30 /* Fragment expire */ 123 #define PFTM_INTERVAL_VAL 10 /* Expire interval */ 124 #define PFTM_SRC_NODE_VAL 0 /* Source tracking */ 125 #define PFTM_TS_DIFF_VAL 30 /* Allowed TS diff */ 126 127 enum { PF_NOPFROUTE, PF_FASTROUTE, PF_ROUTETO, PF_DUPTO, PF_REPLYTO }; 128 enum { PF_LIMIT_STATES, PF_LIMIT_SRC_NODES, PF_LIMIT_FRAGS, 129 PF_LIMIT_TABLES, PF_LIMIT_TABLE_ENTRIES, PF_LIMIT_MAX }; 130 #define PF_POOL_IDMASK 0x0f 131 enum { PF_POOL_NONE, PF_POOL_BITMASK, PF_POOL_RANDOM, 132 PF_POOL_SRCHASH, PF_POOL_ROUNDROBIN }; 133 enum { PF_ADDR_ADDRMASK, PF_ADDR_NOROUTE, PF_ADDR_DYNIFTL, 134 PF_ADDR_TABLE, PF_ADDR_RTLABEL, PF_ADDR_URPFFAILED, 135 PF_ADDR_RANGE }; 136 #define PF_POOL_TYPEMASK 0x0f 137 #define PF_POOL_STICKYADDR 0x20 138 #define PF_WSCALE_FLAG 0x80 139 #define PF_WSCALE_MASK 0x0f 140 141 #define PF_LOG 0x01 142 #define PF_LOG_ALL 0x02 143 #define PF_LOG_SOCKET_LOOKUP 0x04 144 145 struct pf_addr { 146 union { 147 struct in_addr v4; 148 struct in6_addr v6; 149 u_int8_t addr8[16]; 150 u_int16_t addr16[8]; 151 u_int32_t addr32[4]; 152 } pfa; /* 128-bit address */ 153 #define v4 pfa.v4 154 #define v6 pfa.v6 155 #define addr8 pfa.addr8 156 #define addr16 pfa.addr16 157 #define addr32 pfa.addr32 158 }; 159 160 #define PF_TABLE_NAME_SIZE 32 161 162 #define PFI_AFLAG_NETWORK 0x01 163 #define PFI_AFLAG_BROADCAST 0x02 164 #define PFI_AFLAG_PEER 0x04 165 #define PFI_AFLAG_MODEMASK 0x07 166 #define PFI_AFLAG_NOALIAS 0x08 167 168 struct pf_addr_wrap { 169 union { 170 struct { 171 struct pf_addr addr; 172 struct pf_addr mask; 173 } a; 174 char ifname[IFNAMSIZ]; 175 char tblname[PF_TABLE_NAME_SIZE]; 176 #ifdef __FreeBSD__ 177 #define RTLABEL_LEN 32 178 #endif 179 char rtlabelname[RTLABEL_LEN]; 180 u_int32_t rtlabel; 181 } v; 182 union { 183 struct pfi_dynaddr *dyn; 184 struct pfr_ktable *tbl; 185 int dyncnt; 186 int tblcnt; 187 } p; 188 u_int8_t type; /* PF_ADDR_* */ 189 u_int8_t iflags; /* PFI_AFLAG_* */ 190 }; 191 192 #ifdef _KERNEL 193 194 struct pfi_dynaddr { 195 TAILQ_ENTRY(pfi_dynaddr) entry; 196 struct pf_addr pfid_addr4; 197 struct pf_addr pfid_mask4; 198 struct pf_addr pfid_addr6; 199 struct pf_addr pfid_mask6; 200 struct pfr_ktable *pfid_kt; 201 struct pfi_kif *pfid_kif; 202 void *pfid_hook_cookie; 203 int pfid_net; /* mask or 128 */ 204 int pfid_acnt4; /* address count IPv4 */ 205 int pfid_acnt6; /* address count IPv6 */ 206 sa_family_t pfid_af; /* rule af */ 207 u_int8_t pfid_iflags; /* PFI_AFLAG_* */ 208 }; 209 210 /* 211 * Address manipulation macros 212 */ 213 214 #ifdef __FreeBSD__ 215 #define splsoftnet() splnet() 216 217 #define HTONL(x) (x) = htonl((__uint32_t)(x)) 218 #define HTONS(x) (x) = htons((__uint16_t)(x)) 219 #define NTOHL(x) (x) = ntohl((__uint32_t)(x)) 220 #define NTOHS(x) (x) = ntohs((__uint16_t)(x)) 221 222 #define PF_NAME "pf" 223 224 #define PR_NOWAIT M_NOWAIT 225 #define PR_WAITOK M_WAITOK 226 #define PR_ZERO M_ZERO 227 #define pool_get(p, f) uma_zalloc(*(p), (f)) 228 #define pool_put(p, o) uma_zfree(*(p), (o)) 229 230 #define UMA_CREATE(var, type, desc) \ 231 var = uma_zcreate(desc, sizeof(type), \ 232 NULL, NULL, NULL, NULL, UMA_ALIGN_PTR, 0); \ 233 if (var == NULL) \ 234 break 235 #define UMA_DESTROY(var) \ 236 if (var) \ 237 uma_zdestroy(var) 238 239 #ifdef __FreeBSD__ 240 extern struct mtx pf_task_mtx; 241 242 #define PF_LOCK_ASSERT() mtx_assert(&pf_task_mtx, MA_OWNED) 243 #define PF_UNLOCK_ASSERT() mtx_assert(&pf_task_mtx, MA_NOTOWNED) 244 #define PF_LOCK() mtx_lock(&pf_task_mtx) 245 #define PF_UNLOCK() mtx_unlock(&pf_task_mtx) 246 #else 247 #define PF_LOCK_ASSERT() 248 #define PF_UNLOCK_ASSERT() 249 #define PF_LOCK() 250 #define PF_UNLOCK() 251 #endif /* __FreeBSD__ */ 252 253 #define PF_COPYIN(uaddr, kaddr, len, r) do { \ 254 PF_UNLOCK(); \ 255 r = copyin((uaddr), (kaddr), (len)); \ 256 PF_LOCK(); \ 257 } while(0) 258 259 #define PF_COPYOUT(kaddr, uaddr, len, r) do { \ 260 PF_UNLOCK(); \ 261 r = copyout((kaddr), (uaddr), (len)); \ 262 PF_LOCK(); \ 263 } while(0) 264 265 #define PF_MODVER 1 266 #define PFLOG_MODVER 1 267 #define PFSYNC_MODVER 1 268 269 #define PFLOG_MINVER 1 270 #define PFLOG_PREFVER PFLOG_MODVER 271 #define PFLOG_MAXVER 1 272 #define PFSYNC_MINVER 1 273 #define PFSYNC_PREFVER PFSYNC_MODVER 274 #define PFSYNC_MAXVER 1 275 #endif /* __FreeBSD__ */ 276 #ifdef INET 277 #ifndef INET6 278 #define PF_INET_ONLY 279 #endif /* ! INET6 */ 280 #endif /* INET */ 281 282 #ifdef INET6 283 #ifndef INET 284 #define PF_INET6_ONLY 285 #endif /* ! INET */ 286 #endif /* INET6 */ 287 288 #ifdef INET 289 #ifdef INET6 290 #define PF_INET_INET6 291 #endif /* INET6 */ 292 #endif /* INET */ 293 294 #else 295 296 #define PF_INET_INET6 297 298 #endif /* _KERNEL */ 299 300 /* Both IPv4 and IPv6 */ 301 #ifdef PF_INET_INET6 302 303 #define PF_AEQ(a, b, c) \ 304 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \ 305 ((a)->addr32[3] == (b)->addr32[3] && \ 306 (a)->addr32[2] == (b)->addr32[2] && \ 307 (a)->addr32[1] == (b)->addr32[1] && \ 308 (a)->addr32[0] == (b)->addr32[0])) \ 309 310 #define PF_ANEQ(a, b, c) \ 311 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \ 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 ((c == AF_INET && !(a)->addr32[0]) || \ 319 (!(a)->addr32[0] && !(a)->addr32[1] && \ 320 !(a)->addr32[2] && !(a)->addr32[3] )) \ 321 322 #define PF_MATCHA(n, a, m, b, f) \ 323 pf_match_addr(n, a, m, b, f) 324 325 #define PF_ACPY(a, b, f) \ 326 pf_addrcpy(a, b, f) 327 328 #define PF_AINC(a, f) \ 329 pf_addr_inc(a, f) 330 331 #define PF_POOLMASK(a, b, c, d, f) \ 332 pf_poolmask(a, b, c, d, f) 333 334 #else 335 336 /* Just IPv6 */ 337 338 #ifdef PF_INET6_ONLY 339 340 #define PF_AEQ(a, b, c) \ 341 ((a)->addr32[3] == (b)->addr32[3] && \ 342 (a)->addr32[2] == (b)->addr32[2] && \ 343 (a)->addr32[1] == (b)->addr32[1] && \ 344 (a)->addr32[0] == (b)->addr32[0]) \ 345 346 #define PF_ANEQ(a, b, c) \ 347 ((a)->addr32[3] != (b)->addr32[3] || \ 348 (a)->addr32[2] != (b)->addr32[2] || \ 349 (a)->addr32[1] != (b)->addr32[1] || \ 350 (a)->addr32[0] != (b)->addr32[0]) \ 351 352 #define PF_AZERO(a, c) \ 353 (!(a)->addr32[0] && \ 354 !(a)->addr32[1] && \ 355 !(a)->addr32[2] && \ 356 !(a)->addr32[3] ) \ 357 358 #define PF_MATCHA(n, a, m, b, f) \ 359 pf_match_addr(n, a, m, b, f) 360 361 #define PF_ACPY(a, b, f) \ 362 pf_addrcpy(a, b, f) 363 364 #define PF_AINC(a, f) \ 365 pf_addr_inc(a, f) 366 367 #define PF_POOLMASK(a, b, c, d, f) \ 368 pf_poolmask(a, b, c, d, f) 369 370 #else 371 372 /* Just IPv4 */ 373 #ifdef PF_INET_ONLY 374 375 #define PF_AEQ(a, b, c) \ 376 ((a)->addr32[0] == (b)->addr32[0]) 377 378 #define PF_ANEQ(a, b, c) \ 379 ((a)->addr32[0] != (b)->addr32[0]) 380 381 #define PF_AZERO(a, c) \ 382 (!(a)->addr32[0]) 383 384 #define PF_MATCHA(n, a, m, b, f) \ 385 pf_match_addr(n, a, m, b, f) 386 387 #define PF_ACPY(a, b, f) \ 388 (a)->v4.s_addr = (b)->v4.s_addr 389 390 #define PF_AINC(a, f) \ 391 do { \ 392 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \ 393 } while (0) 394 395 #define PF_POOLMASK(a, b, c, d, f) \ 396 do { \ 397 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \ 398 (((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \ 399 } while (0) 400 401 #endif /* PF_INET_ONLY */ 402 #endif /* PF_INET6_ONLY */ 403 #endif /* PF_INET_INET6 */ 404 405 /* 406 * XXX callers not FIB-aware in our version of pf yet. 407 * OpenBSD fixed it later it seems, 2010/05/07 13:33:16 claudio. 408 */ 409 #define PF_MISMATCHAW(aw, x, af, neg, ifp, rtid) \ 410 ( \ 411 (((aw)->type == PF_ADDR_NOROUTE && \ 412 pf_routable((x), (af), NULL, (rtid))) || \ 413 (((aw)->type == PF_ADDR_URPFFAILED && (ifp) != NULL && \ 414 pf_routable((x), (af), (ifp), (rtid))) || \ 415 ((aw)->type == PF_ADDR_RTLABEL && \ 416 !pf_rtlabel_match((x), (af), (aw), (rtid))) || \ 417 ((aw)->type == PF_ADDR_TABLE && \ 418 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \ 419 ((aw)->type == PF_ADDR_DYNIFTL && \ 420 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \ 421 ((aw)->type == PF_ADDR_RANGE && \ 422 !pf_match_addr_range(&(aw)->v.a.addr, \ 423 &(aw)->v.a.mask, (x), (af))) || \ 424 ((aw)->type == PF_ADDR_ADDRMASK && \ 425 !PF_AZERO(&(aw)->v.a.mask, (af)) && \ 426 !PF_MATCHA(0, &(aw)->v.a.addr, \ 427 &(aw)->v.a.mask, (x), (af))))) != \ 428 (neg) \ 429 ) 430 431 432 struct pf_rule_uid { 433 uid_t uid[2]; 434 u_int8_t op; 435 }; 436 437 struct pf_rule_gid { 438 uid_t gid[2]; 439 u_int8_t op; 440 }; 441 442 struct pf_rule_addr { 443 struct pf_addr_wrap addr; 444 u_int16_t port[2]; 445 u_int8_t neg; 446 u_int8_t port_op; 447 }; 448 449 struct pf_pooladdr { 450 struct pf_addr_wrap addr; 451 TAILQ_ENTRY(pf_pooladdr) entries; 452 char ifname[IFNAMSIZ]; 453 struct pfi_kif *kif; 454 }; 455 456 TAILQ_HEAD(pf_palist, pf_pooladdr); 457 458 struct pf_poolhashkey { 459 union { 460 u_int8_t key8[16]; 461 u_int16_t key16[8]; 462 u_int32_t key32[4]; 463 } pfk; /* 128-bit hash key */ 464 #define key8 pfk.key8 465 #define key16 pfk.key16 466 #define key32 pfk.key32 467 }; 468 469 struct pf_pool { 470 struct pf_palist list; 471 struct pf_pooladdr *cur; 472 struct pf_poolhashkey key; 473 struct pf_addr counter; 474 int tblidx; 475 u_int16_t proxy_port[2]; 476 u_int8_t port_op; 477 u_int8_t opts; 478 }; 479 480 481 /* A packed Operating System description for fingerprinting */ 482 typedef u_int32_t pf_osfp_t; 483 #define PF_OSFP_ANY ((pf_osfp_t)0) 484 #define PF_OSFP_UNKNOWN ((pf_osfp_t)-1) 485 #define PF_OSFP_NOMATCH ((pf_osfp_t)-2) 486 487 struct pf_osfp_entry { 488 SLIST_ENTRY(pf_osfp_entry) fp_entry; 489 pf_osfp_t fp_os; 490 int fp_enflags; 491 #define PF_OSFP_EXPANDED 0x001 /* expanded entry */ 492 #define PF_OSFP_GENERIC 0x002 /* generic signature */ 493 #define PF_OSFP_NODETAIL 0x004 /* no p0f details */ 494 #define PF_OSFP_LEN 32 495 char fp_class_nm[PF_OSFP_LEN]; 496 char fp_version_nm[PF_OSFP_LEN]; 497 char fp_subtype_nm[PF_OSFP_LEN]; 498 }; 499 #define PF_OSFP_ENTRY_EQ(a, b) \ 500 ((a)->fp_os == (b)->fp_os && \ 501 memcmp((a)->fp_class_nm, (b)->fp_class_nm, PF_OSFP_LEN) == 0 && \ 502 memcmp((a)->fp_version_nm, (b)->fp_version_nm, PF_OSFP_LEN) == 0 && \ 503 memcmp((a)->fp_subtype_nm, (b)->fp_subtype_nm, PF_OSFP_LEN) == 0) 504 505 /* handle pf_osfp_t packing */ 506 #define _FP_RESERVED_BIT 1 /* For the special negative #defines */ 507 #define _FP_UNUSED_BITS 1 508 #define _FP_CLASS_BITS 10 /* OS Class (Windows, Linux) */ 509 #define _FP_VERSION_BITS 10 /* OS version (95, 98, NT, 2.4.54, 3.2) */ 510 #define _FP_SUBTYPE_BITS 10 /* patch level (NT SP4, SP3, ECN patch) */ 511 #define PF_OSFP_UNPACK(osfp, class, version, subtype) do { \ 512 (class) = ((osfp) >> (_FP_VERSION_BITS+_FP_SUBTYPE_BITS)) & \ 513 ((1 << _FP_CLASS_BITS) - 1); \ 514 (version) = ((osfp) >> _FP_SUBTYPE_BITS) & \ 515 ((1 << _FP_VERSION_BITS) - 1);\ 516 (subtype) = (osfp) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 517 } while(0) 518 #define PF_OSFP_PACK(osfp, class, version, subtype) do { \ 519 (osfp) = ((class) & ((1 << _FP_CLASS_BITS) - 1)) << (_FP_VERSION_BITS \ 520 + _FP_SUBTYPE_BITS); \ 521 (osfp) |= ((version) & ((1 << _FP_VERSION_BITS) - 1)) << \ 522 _FP_SUBTYPE_BITS; \ 523 (osfp) |= (subtype) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 524 } while(0) 525 526 /* the fingerprint of an OSes TCP SYN packet */ 527 typedef u_int64_t pf_tcpopts_t; 528 struct pf_os_fingerprint { 529 SLIST_HEAD(pf_osfp_enlist, pf_osfp_entry) fp_oses; /* list of matches */ 530 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 531 u_int16_t fp_wsize; /* TCP window size */ 532 u_int16_t fp_psize; /* ip->ip_len */ 533 u_int16_t fp_mss; /* TCP MSS */ 534 u_int16_t fp_flags; 535 #define PF_OSFP_WSIZE_MOD 0x0001 /* Window modulus */ 536 #define PF_OSFP_WSIZE_DC 0x0002 /* Window don't care */ 537 #define PF_OSFP_WSIZE_MSS 0x0004 /* Window multiple of MSS */ 538 #define PF_OSFP_WSIZE_MTU 0x0008 /* Window multiple of MTU */ 539 #define PF_OSFP_PSIZE_MOD 0x0010 /* packet size modulus */ 540 #define PF_OSFP_PSIZE_DC 0x0020 /* packet size don't care */ 541 #define PF_OSFP_WSCALE 0x0040 /* TCP window scaling */ 542 #define PF_OSFP_WSCALE_MOD 0x0080 /* TCP window scale modulus */ 543 #define PF_OSFP_WSCALE_DC 0x0100 /* TCP window scale dont-care */ 544 #define PF_OSFP_MSS 0x0200 /* TCP MSS */ 545 #define PF_OSFP_MSS_MOD 0x0400 /* TCP MSS modulus */ 546 #define PF_OSFP_MSS_DC 0x0800 /* TCP MSS dont-care */ 547 #define PF_OSFP_DF 0x1000 /* IPv4 don't fragment bit */ 548 #define PF_OSFP_TS0 0x2000 /* Zero timestamp */ 549 #define PF_OSFP_INET6 0x4000 /* IPv6 */ 550 u_int8_t fp_optcnt; /* TCP option count */ 551 u_int8_t fp_wscale; /* TCP window scaling */ 552 u_int8_t fp_ttl; /* IPv4 TTL */ 553 #define PF_OSFP_MAXTTL_OFFSET 40 554 /* TCP options packing */ 555 #define PF_OSFP_TCPOPT_NOP 0x0 /* TCP NOP option */ 556 #define PF_OSFP_TCPOPT_WSCALE 0x1 /* TCP window scaling option */ 557 #define PF_OSFP_TCPOPT_MSS 0x2 /* TCP max segment size opt */ 558 #define PF_OSFP_TCPOPT_SACK 0x3 /* TCP SACK OK option */ 559 #define PF_OSFP_TCPOPT_TS 0x4 /* TCP timestamp option */ 560 #define PF_OSFP_TCPOPT_BITS 3 /* bits used by each option */ 561 #define PF_OSFP_MAX_OPTS \ 562 (sizeof(((struct pf_os_fingerprint *)0)->fp_tcpopts) * 8) \ 563 / PF_OSFP_TCPOPT_BITS 564 565 SLIST_ENTRY(pf_os_fingerprint) fp_next; 566 }; 567 568 struct pf_osfp_ioctl { 569 struct pf_osfp_entry fp_os; 570 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 571 u_int16_t fp_wsize; /* TCP window size */ 572 u_int16_t fp_psize; /* ip->ip_len */ 573 u_int16_t fp_mss; /* TCP MSS */ 574 u_int16_t fp_flags; 575 u_int8_t fp_optcnt; /* TCP option count */ 576 u_int8_t fp_wscale; /* TCP window scaling */ 577 u_int8_t fp_ttl; /* IPv4 TTL */ 578 579 int fp_getnum; /* DIOCOSFPGET number */ 580 }; 581 582 583 union pf_rule_ptr { 584 struct pf_rule *ptr; 585 u_int32_t nr; 586 }; 587 588 #define PF_ANCHOR_NAME_SIZE 64 589 590 struct pf_rule { 591 struct pf_rule_addr src; 592 struct pf_rule_addr dst; 593 #define PF_SKIP_IFP 0 594 #define PF_SKIP_DIR 1 595 #define PF_SKIP_AF 2 596 #define PF_SKIP_PROTO 3 597 #define PF_SKIP_SRC_ADDR 4 598 #define PF_SKIP_SRC_PORT 5 599 #define PF_SKIP_DST_ADDR 6 600 #define PF_SKIP_DST_PORT 7 601 #define PF_SKIP_COUNT 8 602 union pf_rule_ptr skip[PF_SKIP_COUNT]; 603 #define PF_RULE_LABEL_SIZE 64 604 char label[PF_RULE_LABEL_SIZE]; 605 #define PF_QNAME_SIZE 64 606 char ifname[IFNAMSIZ]; 607 char qname[PF_QNAME_SIZE]; 608 char pqname[PF_QNAME_SIZE]; 609 #define PF_TAG_NAME_SIZE 64 610 char tagname[PF_TAG_NAME_SIZE]; 611 char match_tagname[PF_TAG_NAME_SIZE]; 612 613 char overload_tblname[PF_TABLE_NAME_SIZE]; 614 615 TAILQ_ENTRY(pf_rule) entries; 616 struct pf_pool rpool; 617 618 u_int64_t evaluations; 619 u_int64_t packets[2]; 620 u_int64_t bytes[2]; 621 622 struct pfi_kif *kif; 623 struct pf_anchor *anchor; 624 struct pfr_ktable *overload_tbl; 625 626 pf_osfp_t os_fingerprint; 627 628 int rtableid; 629 u_int32_t timeout[PFTM_MAX]; 630 u_int32_t states_cur; 631 u_int32_t states_tot; 632 u_int32_t max_states; 633 u_int32_t src_nodes; 634 u_int32_t max_src_nodes; 635 u_int32_t max_src_states; 636 u_int32_t spare1; /* netgraph */ 637 u_int32_t max_src_conn; 638 struct { 639 u_int32_t limit; 640 u_int32_t seconds; 641 } max_src_conn_rate; 642 u_int32_t qid; 643 u_int32_t pqid; 644 u_int32_t rt_listid; 645 u_int32_t nr; 646 u_int32_t prob; 647 uid_t cuid; 648 pid_t cpid; 649 650 u_int16_t return_icmp; 651 u_int16_t return_icmp6; 652 u_int16_t max_mss; 653 u_int16_t tag; 654 u_int16_t match_tag; 655 u_int16_t spare2; /* netgraph */ 656 657 struct pf_rule_uid uid; 658 struct pf_rule_gid gid; 659 660 u_int32_t rule_flag; 661 u_int8_t action; 662 u_int8_t direction; 663 u_int8_t log; 664 u_int8_t logif; 665 u_int8_t quick; 666 u_int8_t ifnot; 667 u_int8_t match_tag_not; 668 u_int8_t natpass; 669 670 #define PF_STATE_NORMAL 0x1 671 #define PF_STATE_MODULATE 0x2 672 #define PF_STATE_SYNPROXY 0x3 673 u_int8_t keep_state; 674 sa_family_t af; 675 u_int8_t proto; 676 u_int8_t type; 677 u_int8_t code; 678 u_int8_t flags; 679 u_int8_t flagset; 680 u_int8_t min_ttl; 681 u_int8_t allow_opts; 682 u_int8_t rt; 683 u_int8_t return_ttl; 684 u_int8_t tos; 685 u_int8_t set_tos; 686 u_int8_t anchor_relative; 687 u_int8_t anchor_wildcard; 688 689 #define PF_FLUSH 0x01 690 #define PF_FLUSH_GLOBAL 0x02 691 u_int8_t flush; 692 693 struct { 694 struct pf_addr addr; 695 u_int16_t port; 696 } divert; 697 }; 698 699 /* rule flags */ 700 #define PFRULE_DROP 0x0000 701 #define PFRULE_RETURNRST 0x0001 702 #define PFRULE_FRAGMENT 0x0002 703 #define PFRULE_RETURNICMP 0x0004 704 #define PFRULE_RETURN 0x0008 705 #define PFRULE_NOSYNC 0x0010 706 #define PFRULE_SRCTRACK 0x0020 /* track source states */ 707 #define PFRULE_RULESRCTRACK 0x0040 /* per rule */ 708 709 /* scrub flags */ 710 #define PFRULE_NODF 0x0100 711 #define PFRULE_FRAGCROP 0x0200 /* non-buffering frag cache */ 712 #define PFRULE_FRAGDROP 0x0400 /* drop funny fragments */ 713 #define PFRULE_RANDOMID 0x0800 714 #define PFRULE_REASSEMBLE_TCP 0x1000 715 #define PFRULE_SET_TOS 0x2000 716 717 /* rule flags again */ 718 #define PFRULE_IFBOUND 0x00010000 /* if-bound */ 719 #define PFRULE_STATESLOPPY 0x00020000 /* sloppy state tracking */ 720 #define PFRULE_PFLOW 0x00040000 721 722 #define PFSTATE_HIWAT 10000 /* default state table size */ 723 #define PFSTATE_ADAPT_START 6000 /* default adaptive timeout start */ 724 #define PFSTATE_ADAPT_END 12000 /* default adaptive timeout end */ 725 726 727 struct pf_threshold { 728 u_int32_t limit; 729 #define PF_THRESHOLD_MULT 1000 730 #define PF_THRESHOLD_MAX 0xffffffff / PF_THRESHOLD_MULT 731 u_int32_t seconds; 732 u_int32_t count; 733 u_int32_t last; 734 }; 735 736 struct pf_src_node { 737 RB_ENTRY(pf_src_node) entry; 738 struct pf_addr addr; 739 struct pf_addr raddr; 740 union pf_rule_ptr rule; 741 struct pfi_kif *kif; 742 u_int64_t bytes[2]; 743 u_int64_t packets[2]; 744 u_int32_t states; 745 u_int32_t conn; 746 struct pf_threshold conn_rate; 747 u_int32_t creation; 748 u_int32_t expire; 749 sa_family_t af; 750 u_int8_t ruletype; 751 }; 752 753 #define PFSNODE_HIWAT 10000 /* default source node table size */ 754 755 struct pf_state_scrub { 756 struct timeval pfss_last; /* time received last packet */ 757 u_int32_t pfss_tsecr; /* last echoed timestamp */ 758 u_int32_t pfss_tsval; /* largest timestamp */ 759 u_int32_t pfss_tsval0; /* original timestamp */ 760 u_int16_t pfss_flags; 761 #define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */ 762 #define PFSS_PAWS 0x0010 /* stricter PAWS checks */ 763 #define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */ 764 #define PFSS_DATA_TS 0x0040 /* timestamp on data packets */ 765 #define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */ 766 u_int8_t pfss_ttl; /* stashed TTL */ 767 u_int8_t pad; 768 u_int32_t pfss_ts_mod; /* timestamp modulation */ 769 }; 770 771 struct pf_state_host { 772 struct pf_addr addr; 773 u_int16_t port; 774 u_int16_t pad; 775 }; 776 777 struct pf_state_peer { 778 struct pf_state_scrub *scrub; /* state is scrubbed */ 779 u_int32_t seqlo; /* Max sequence number sent */ 780 u_int32_t seqhi; /* Max the other end ACKd + win */ 781 u_int32_t seqdiff; /* Sequence number modulator */ 782 u_int16_t max_win; /* largest window (pre scaling) */ 783 u_int16_t mss; /* Maximum segment size option */ 784 u_int8_t state; /* active state level */ 785 u_int8_t wscale; /* window scaling factor */ 786 u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */ 787 u_int8_t pad[1]; 788 }; 789 790 TAILQ_HEAD(pf_state_queue, pf_state); 791 792 /* keep synced with struct pf_state_key, used in RB_FIND */ 793 struct pf_state_key_cmp { 794 struct pf_addr addr[2]; 795 u_int16_t port[2]; 796 sa_family_t af; 797 u_int8_t proto; 798 u_int8_t pad[2]; 799 }; 800 801 struct pf_state_item { 802 TAILQ_ENTRY(pf_state_item) entry; 803 struct pf_state *s; 804 }; 805 806 TAILQ_HEAD(pf_statelisthead, pf_state_item); 807 808 struct pf_state_key { 809 struct pf_addr addr[2]; 810 u_int16_t port[2]; 811 sa_family_t af; 812 u_int8_t proto; 813 u_int8_t pad[2]; 814 815 RB_ENTRY(pf_state_key) entry; 816 struct pf_statelisthead states; 817 struct pf_state_key *reverse; 818 struct inpcb *inp; 819 }; 820 821 /* keep synced with struct pf_state, used in RB_FIND */ 822 struct pf_state_cmp { 823 u_int64_t id; 824 u_int32_t creatorid; 825 u_int8_t direction; 826 u_int8_t pad[3]; 827 }; 828 829 struct pf_state { 830 u_int64_t id; 831 u_int32_t creatorid; 832 u_int8_t direction; 833 #ifdef __FreeBSD__ 834 u_int8_t pad[2]; 835 u_int8_t local_flags; 836 #define PFSTATE_EXPIRING 0x01 837 #else 838 u_int8_t pad[3]; 839 #endif 840 841 TAILQ_ENTRY(pf_state) sync_list; 842 TAILQ_ENTRY(pf_state) entry_list; 843 RB_ENTRY(pf_state) entry_id; 844 struct pf_state_peer src; 845 struct pf_state_peer dst; 846 union pf_rule_ptr rule; 847 union pf_rule_ptr anchor; 848 union pf_rule_ptr nat_rule; 849 struct pf_addr rt_addr; 850 struct pf_state_key *key[2]; /* addresses stack and wire */ 851 struct pfi_kif *kif; 852 struct pfi_kif *rt_kif; 853 struct pf_src_node *src_node; 854 struct pf_src_node *nat_src_node; 855 u_int64_t packets[2]; 856 u_int64_t bytes[2]; 857 u_int32_t creation; 858 u_int32_t expire; 859 u_int32_t pfsync_time; 860 u_int16_t tag; 861 u_int8_t log; 862 u_int8_t state_flags; 863 #define PFSTATE_ALLOWOPTS 0x01 864 #define PFSTATE_SLOPPY 0x02 865 #define PFSTATE_PFLOW 0x04 866 #define PFSTATE_NOSYNC 0x08 867 #define PFSTATE_ACK 0x10 868 u_int8_t timeout; 869 u_int8_t sync_state; /* PFSYNC_S_x */ 870 871 /* XXX */ 872 u_int8_t sync_updates; 873 u_int8_t _tail[3]; 874 }; 875 876 /* 877 * Unified state structures for pulling states out of the kernel 878 * used by pfsync(4) and the pf(4) ioctl. 879 */ 880 struct pfsync_state_scrub { 881 u_int16_t pfss_flags; 882 u_int8_t pfss_ttl; /* stashed TTL */ 883 #define PFSYNC_SCRUB_FLAG_VALID 0x01 884 u_int8_t scrub_flag; 885 u_int32_t pfss_ts_mod; /* timestamp modulation */ 886 } __packed; 887 888 struct pfsync_state_peer { 889 struct pfsync_state_scrub scrub; /* state is scrubbed */ 890 u_int32_t seqlo; /* Max sequence number sent */ 891 u_int32_t seqhi; /* Max the other end ACKd + win */ 892 u_int32_t seqdiff; /* Sequence number modulator */ 893 u_int16_t max_win; /* largest window (pre scaling) */ 894 u_int16_t mss; /* Maximum segment size option */ 895 u_int8_t state; /* active state level */ 896 u_int8_t wscale; /* window scaling factor */ 897 u_int8_t pad[6]; 898 } __packed; 899 900 struct pfsync_state_key { 901 struct pf_addr addr[2]; 902 u_int16_t port[2]; 903 }; 904 905 struct pfsync_state { 906 u_int32_t id[2]; 907 char ifname[IFNAMSIZ]; 908 struct pfsync_state_key key[2]; 909 struct pfsync_state_peer src; 910 struct pfsync_state_peer dst; 911 struct pf_addr rt_addr; 912 u_int32_t rule; 913 u_int32_t anchor; 914 u_int32_t nat_rule; 915 u_int32_t creation; 916 u_int32_t expire; 917 u_int32_t packets[2][2]; 918 u_int32_t bytes[2][2]; 919 u_int32_t creatorid; 920 sa_family_t af; 921 u_int8_t proto; 922 u_int8_t direction; 923 #ifdef __FreeBSD__ 924 u_int8_t local_flags; 925 #define PFSTATE_EXPIRING 0x01 926 u_int8_t pad; 927 #endif 928 u_int8_t log; 929 u_int8_t state_flags; 930 u_int8_t timeout; 931 u_int8_t sync_flags; 932 u_int8_t updates; 933 } __packed; 934 935 #ifdef __FreeBSD__ 936 #ifdef _KERNEL 937 /* pfsync */ 938 typedef int pfsync_state_import_t(struct pfsync_state *, u_int8_t); 939 typedef void pfsync_insert_state_t(struct pf_state *); 940 typedef void pfsync_update_state_t(struct pf_state *); 941 typedef void pfsync_delete_state_t(struct pf_state *); 942 typedef void pfsync_clear_states_t(u_int32_t, const char *); 943 typedef int pfsync_state_in_use_t(struct pf_state *); 944 typedef int pfsync_defer_t(struct pf_state *, struct mbuf *); 945 typedef int pfsync_up_t(void); 946 947 extern pfsync_state_import_t *pfsync_state_import_ptr; 948 extern pfsync_insert_state_t *pfsync_insert_state_ptr; 949 extern pfsync_update_state_t *pfsync_update_state_ptr; 950 extern pfsync_delete_state_t *pfsync_delete_state_ptr; 951 extern pfsync_clear_states_t *pfsync_clear_states_ptr; 952 extern pfsync_state_in_use_t *pfsync_state_in_use_ptr; 953 extern pfsync_defer_t *pfsync_defer_ptr; 954 extern pfsync_up_t *pfsync_up_ptr; 955 956 void pfsync_state_export(struct pfsync_state *, 957 struct pf_state *); 958 959 /* pflow */ 960 typedef int export_pflow_t(struct pf_state *); 961 962 extern export_pflow_t *export_pflow_ptr; 963 964 /* pflog */ 965 struct pf_ruleset; 966 struct pf_pdesc; 967 typedef int pflog_packet_t(struct pfi_kif *, struct mbuf *, sa_family_t, 968 u_int8_t, u_int8_t, struct pf_rule *, struct pf_rule *, 969 struct pf_ruleset *, struct pf_pdesc *); 970 971 extern pflog_packet_t *pflog_packet_ptr; 972 973 /* pf uid hack */ 974 VNET_DECLARE(int, debug_pfugidhack); 975 #define V_debug_pfugidhack VNET(debug_pfugidhack) 976 977 #define V_pf_end_threads VNET(pf_end_threads) 978 #endif 979 980 /* Macros to set/clear/test flags. */ 981 #ifdef _KERNEL 982 #define SET(t, f) ((t) |= (f)) 983 #define CLR(t, f) ((t) &= ~(f)) 984 #define ISSET(t, f) ((t) & (f)) 985 #endif 986 #endif 987 988 #define PFSYNC_FLAG_SRCNODE 0x04 989 #define PFSYNC_FLAG_NATSRCNODE 0x08 990 991 /* for copies to/from network byte order */ 992 /* ioctl interface also uses network byte order */ 993 #define pf_state_peer_hton(s,d) do { \ 994 (d)->seqlo = htonl((s)->seqlo); \ 995 (d)->seqhi = htonl((s)->seqhi); \ 996 (d)->seqdiff = htonl((s)->seqdiff); \ 997 (d)->max_win = htons((s)->max_win); \ 998 (d)->mss = htons((s)->mss); \ 999 (d)->state = (s)->state; \ 1000 (d)->wscale = (s)->wscale; \ 1001 if ((s)->scrub) { \ 1002 (d)->scrub.pfss_flags = \ 1003 htons((s)->scrub->pfss_flags & PFSS_TIMESTAMP); \ 1004 (d)->scrub.pfss_ttl = (s)->scrub->pfss_ttl; \ 1005 (d)->scrub.pfss_ts_mod = htonl((s)->scrub->pfss_ts_mod);\ 1006 (d)->scrub.scrub_flag = PFSYNC_SCRUB_FLAG_VALID; \ 1007 } \ 1008 } while (0) 1009 1010 #define pf_state_peer_ntoh(s,d) do { \ 1011 (d)->seqlo = ntohl((s)->seqlo); \ 1012 (d)->seqhi = ntohl((s)->seqhi); \ 1013 (d)->seqdiff = ntohl((s)->seqdiff); \ 1014 (d)->max_win = ntohs((s)->max_win); \ 1015 (d)->mss = ntohs((s)->mss); \ 1016 (d)->state = (s)->state; \ 1017 (d)->wscale = (s)->wscale; \ 1018 if ((s)->scrub.scrub_flag == PFSYNC_SCRUB_FLAG_VALID && \ 1019 (d)->scrub != NULL) { \ 1020 (d)->scrub->pfss_flags = \ 1021 ntohs((s)->scrub.pfss_flags) & PFSS_TIMESTAMP; \ 1022 (d)->scrub->pfss_ttl = (s)->scrub.pfss_ttl; \ 1023 (d)->scrub->pfss_ts_mod = ntohl((s)->scrub.pfss_ts_mod);\ 1024 } \ 1025 } while (0) 1026 1027 #define pf_state_counter_hton(s,d) do { \ 1028 d[0] = htonl((s>>32)&0xffffffff); \ 1029 d[1] = htonl(s&0xffffffff); \ 1030 } while (0) 1031 1032 #define pf_state_counter_from_pfsync(s) \ 1033 (((u_int64_t)(s[0])<<32) | (u_int64_t)(s[1])) 1034 1035 #define pf_state_counter_ntoh(s,d) do { \ 1036 d = ntohl(s[0]); \ 1037 d = d<<32; \ 1038 d += ntohl(s[1]); \ 1039 } while (0) 1040 1041 TAILQ_HEAD(pf_rulequeue, pf_rule); 1042 1043 struct pf_anchor; 1044 1045 struct pf_ruleset { 1046 struct { 1047 struct pf_rulequeue queues[2]; 1048 struct { 1049 struct pf_rulequeue *ptr; 1050 struct pf_rule **ptr_array; 1051 u_int32_t rcount; 1052 u_int32_t ticket; 1053 int open; 1054 } active, inactive; 1055 } rules[PF_RULESET_MAX]; 1056 struct pf_anchor *anchor; 1057 u_int32_t tticket; 1058 int tables; 1059 int topen; 1060 }; 1061 1062 RB_HEAD(pf_anchor_global, pf_anchor); 1063 RB_HEAD(pf_anchor_node, pf_anchor); 1064 struct pf_anchor { 1065 RB_ENTRY(pf_anchor) entry_global; 1066 RB_ENTRY(pf_anchor) entry_node; 1067 struct pf_anchor *parent; 1068 struct pf_anchor_node children; 1069 char name[PF_ANCHOR_NAME_SIZE]; 1070 char path[MAXPATHLEN]; 1071 struct pf_ruleset ruleset; 1072 int refcnt; /* anchor rules */ 1073 int match; 1074 }; 1075 RB_PROTOTYPE(pf_anchor_global, pf_anchor, entry_global, pf_anchor_compare); 1076 RB_PROTOTYPE(pf_anchor_node, pf_anchor, entry_node, pf_anchor_compare); 1077 1078 #define PF_RESERVED_ANCHOR "_pf" 1079 1080 #define PFR_TFLAG_PERSIST 0x00000001 1081 #define PFR_TFLAG_CONST 0x00000002 1082 #define PFR_TFLAG_ACTIVE 0x00000004 1083 #define PFR_TFLAG_INACTIVE 0x00000008 1084 #define PFR_TFLAG_REFERENCED 0x00000010 1085 #define PFR_TFLAG_REFDANCHOR 0x00000020 1086 #define PFR_TFLAG_COUNTERS 0x00000040 1087 /* Adjust masks below when adding flags. */ 1088 #define PFR_TFLAG_USRMASK 0x00000043 1089 #define PFR_TFLAG_SETMASK 0x0000003C 1090 #define PFR_TFLAG_ALLMASK 0x0000007F 1091 1092 struct pfr_table { 1093 char pfrt_anchor[MAXPATHLEN]; 1094 char pfrt_name[PF_TABLE_NAME_SIZE]; 1095 u_int32_t pfrt_flags; 1096 u_int8_t pfrt_fback; 1097 }; 1098 1099 enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED, 1100 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE, 1101 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_NOCOUNT, PFR_FB_MAX }; 1102 1103 struct pfr_addr { 1104 union { 1105 struct in_addr _pfra_ip4addr; 1106 struct in6_addr _pfra_ip6addr; 1107 } pfra_u; 1108 u_int8_t pfra_af; 1109 u_int8_t pfra_net; 1110 u_int8_t pfra_not; 1111 u_int8_t pfra_fback; 1112 }; 1113 #define pfra_ip4addr pfra_u._pfra_ip4addr 1114 #define pfra_ip6addr pfra_u._pfra_ip6addr 1115 1116 enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX }; 1117 enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX }; 1118 #define PFR_OP_XPASS PFR_OP_ADDR_MAX 1119 1120 struct pfr_astats { 1121 struct pfr_addr pfras_a; 1122 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1123 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1124 long pfras_tzero; 1125 }; 1126 1127 enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX }; 1128 1129 struct pfr_tstats { 1130 struct pfr_table pfrts_t; 1131 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1132 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1133 u_int64_t pfrts_match; 1134 u_int64_t pfrts_nomatch; 1135 long pfrts_tzero; 1136 int pfrts_cnt; 1137 int pfrts_refcnt[PFR_REFCNT_MAX]; 1138 }; 1139 #define pfrts_name pfrts_t.pfrt_name 1140 #define pfrts_flags pfrts_t.pfrt_flags 1141 1142 #ifndef _SOCKADDR_UNION_DEFINED 1143 #define _SOCKADDR_UNION_DEFINED 1144 union sockaddr_union { 1145 struct sockaddr sa; 1146 struct sockaddr_in sin; 1147 struct sockaddr_in6 sin6; 1148 }; 1149 #endif /* _SOCKADDR_UNION_DEFINED */ 1150 1151 struct pfr_kcounters { 1152 u_int64_t pfrkc_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1153 u_int64_t pfrkc_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1154 }; 1155 1156 SLIST_HEAD(pfr_kentryworkq, pfr_kentry); 1157 struct pfr_kentry { 1158 struct radix_node pfrke_node[2]; 1159 union sockaddr_union pfrke_sa; 1160 SLIST_ENTRY(pfr_kentry) pfrke_workq; 1161 union { 1162 1163 struct pfr_kcounters *pfrke_counters; 1164 #if 0 1165 struct pfr_kroute *pfrke_route; 1166 #endif 1167 } u; 1168 long pfrke_tzero; 1169 u_int8_t pfrke_af; 1170 u_int8_t pfrke_net; 1171 u_int8_t pfrke_not; 1172 u_int8_t pfrke_mark; 1173 }; 1174 #define pfrke_counters u.pfrke_counters 1175 #define pfrke_route u.pfrke_route 1176 1177 1178 SLIST_HEAD(pfr_ktableworkq, pfr_ktable); 1179 RB_HEAD(pfr_ktablehead, pfr_ktable); 1180 struct pfr_ktable { 1181 struct pfr_tstats pfrkt_ts; 1182 RB_ENTRY(pfr_ktable) pfrkt_tree; 1183 SLIST_ENTRY(pfr_ktable) pfrkt_workq; 1184 struct radix_node_head *pfrkt_ip4; 1185 struct radix_node_head *pfrkt_ip6; 1186 struct pfr_ktable *pfrkt_shadow; 1187 struct pfr_ktable *pfrkt_root; 1188 struct pf_ruleset *pfrkt_rs; 1189 long pfrkt_larg; 1190 int pfrkt_nflags; 1191 }; 1192 #define pfrkt_t pfrkt_ts.pfrts_t 1193 #define pfrkt_name pfrkt_t.pfrt_name 1194 #define pfrkt_anchor pfrkt_t.pfrt_anchor 1195 #define pfrkt_ruleset pfrkt_t.pfrt_ruleset 1196 #define pfrkt_flags pfrkt_t.pfrt_flags 1197 #define pfrkt_cnt pfrkt_ts.pfrts_cnt 1198 #define pfrkt_refcnt pfrkt_ts.pfrts_refcnt 1199 #define pfrkt_packets pfrkt_ts.pfrts_packets 1200 #define pfrkt_bytes pfrkt_ts.pfrts_bytes 1201 #define pfrkt_match pfrkt_ts.pfrts_match 1202 #define pfrkt_nomatch pfrkt_ts.pfrts_nomatch 1203 #define pfrkt_tzero pfrkt_ts.pfrts_tzero 1204 1205 RB_HEAD(pf_state_tree, pf_state_key); 1206 RB_PROTOTYPE(pf_state_tree, pf_state_key, entry, pf_state_compare_key); 1207 1208 RB_HEAD(pf_state_tree_ext_gwy, pf_state_key); 1209 RB_PROTOTYPE(pf_state_tree_ext_gwy, pf_state_key, 1210 entry_ext_gwy, pf_state_compare_ext_gwy); 1211 1212 RB_HEAD(pfi_ifhead, pfi_kif); 1213 1214 /* state tables */ 1215 #ifdef __FreeBSD__ 1216 #ifdef _KERNEL 1217 VNET_DECLARE(struct pf_state_tree, pf_statetbl); 1218 #define V_pf_statetbl VNET(pf_statetbl) 1219 #endif 1220 #else 1221 extern struct pf_state_tree pf_statetbl; 1222 #endif 1223 1224 /* keep synced with pfi_kif, used in RB_FIND */ 1225 struct pfi_kif_cmp { 1226 char pfik_name[IFNAMSIZ]; 1227 }; 1228 1229 struct pfi_kif { 1230 char pfik_name[IFNAMSIZ]; 1231 RB_ENTRY(pfi_kif) pfik_tree; 1232 u_int64_t pfik_packets[2][2][2]; 1233 u_int64_t pfik_bytes[2][2][2]; 1234 u_int32_t pfik_tzero; 1235 int pfik_flags; 1236 void *pfik_ah_cookie; 1237 struct ifnet *pfik_ifp; 1238 struct ifg_group *pfik_group; 1239 int pfik_states; 1240 int pfik_rules; 1241 TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs; 1242 }; 1243 1244 enum pfi_kif_refs { 1245 PFI_KIF_REF_NONE, 1246 PFI_KIF_REF_STATE, 1247 PFI_KIF_REF_RULE 1248 }; 1249 1250 #define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */ 1251 1252 struct pf_pdesc { 1253 struct { 1254 int done; 1255 uid_t uid; 1256 gid_t gid; 1257 pid_t pid; 1258 } lookup; 1259 u_int64_t tot_len; /* Make Mickey money */ 1260 union { 1261 struct tcphdr *tcp; 1262 struct udphdr *udp; 1263 struct icmp *icmp; 1264 #ifdef INET6 1265 struct icmp6_hdr *icmp6; 1266 #endif /* INET6 */ 1267 void *any; 1268 } hdr; 1269 1270 struct pf_rule *nat_rule; /* nat/rdr rule applied to packet */ 1271 struct ether_header 1272 *eh; 1273 struct pf_addr *src; /* src address */ 1274 struct pf_addr *dst; /* dst address */ 1275 u_int16_t *sport; 1276 u_int16_t *dport; 1277 #ifdef __FreeBSD__ 1278 struct pf_mtag *pf_mtag; 1279 #endif 1280 1281 u_int32_t p_len; /* total length of payload */ 1282 1283 u_int16_t *ip_sum; 1284 u_int16_t *proto_sum; 1285 u_int16_t flags; /* Let SCRUB trigger behavior in 1286 * state code. Easier than tags */ 1287 #define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */ 1288 #define PFDESC_IP_REAS 0x0002 /* IP frags would've been reassembled */ 1289 sa_family_t af; 1290 u_int8_t proto; 1291 u_int8_t tos; 1292 u_int8_t dir; /* direction */ 1293 u_int8_t sidx; /* key index for source */ 1294 u_int8_t didx; /* key index for destination */ 1295 }; 1296 1297 /* flags for RDR options */ 1298 #define PF_DPORT_RANGE 0x01 /* Dest port uses range */ 1299 #define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */ 1300 1301 /* Reasons code for passing/dropping a packet */ 1302 #define PFRES_MATCH 0 /* Explicit match of a rule */ 1303 #define PFRES_BADOFF 1 /* Bad offset for pull_hdr */ 1304 #define PFRES_FRAG 2 /* Dropping following fragment */ 1305 #define PFRES_SHORT 3 /* Dropping short packet */ 1306 #define PFRES_NORM 4 /* Dropping by normalizer */ 1307 #define PFRES_MEMORY 5 /* Dropped due to lacking mem */ 1308 #define PFRES_TS 6 /* Bad TCP Timestamp (RFC1323) */ 1309 #define PFRES_CONGEST 7 /* Congestion (of ipintrq) */ 1310 #define PFRES_IPOPTIONS 8 /* IP option */ 1311 #define PFRES_PROTCKSUM 9 /* Protocol checksum invalid */ 1312 #define PFRES_BADSTATE 10 /* State mismatch */ 1313 #define PFRES_STATEINS 11 /* State insertion failure */ 1314 #define PFRES_MAXSTATES 12 /* State limit */ 1315 #define PFRES_SRCLIMIT 13 /* Source node/conn limit */ 1316 #define PFRES_SYNPROXY 14 /* SYN proxy */ 1317 #define PFRES_MAX 15 /* total+1 */ 1318 1319 #define PFRES_NAMES { \ 1320 "match", \ 1321 "bad-offset", \ 1322 "fragment", \ 1323 "short", \ 1324 "normalize", \ 1325 "memory", \ 1326 "bad-timestamp", \ 1327 "congestion", \ 1328 "ip-option", \ 1329 "proto-cksum", \ 1330 "state-mismatch", \ 1331 "state-insert", \ 1332 "state-limit", \ 1333 "src-limit", \ 1334 "synproxy", \ 1335 NULL \ 1336 } 1337 1338 /* Counters for other things we want to keep track of */ 1339 #define LCNT_STATES 0 /* states */ 1340 #define LCNT_SRCSTATES 1 /* max-src-states */ 1341 #define LCNT_SRCNODES 2 /* max-src-nodes */ 1342 #define LCNT_SRCCONN 3 /* max-src-conn */ 1343 #define LCNT_SRCCONNRATE 4 /* max-src-conn-rate */ 1344 #define LCNT_OVERLOAD_TABLE 5 /* entry added to overload table */ 1345 #define LCNT_OVERLOAD_FLUSH 6 /* state entries flushed */ 1346 #define LCNT_MAX 7 /* total+1 */ 1347 1348 #define LCNT_NAMES { \ 1349 "max states per rule", \ 1350 "max-src-states", \ 1351 "max-src-nodes", \ 1352 "max-src-conn", \ 1353 "max-src-conn-rate", \ 1354 "overload table insertion", \ 1355 "overload flush states", \ 1356 NULL \ 1357 } 1358 1359 /* UDP state enumeration */ 1360 #define PFUDPS_NO_TRAFFIC 0 1361 #define PFUDPS_SINGLE 1 1362 #define PFUDPS_MULTIPLE 2 1363 1364 #define PFUDPS_NSTATES 3 /* number of state levels */ 1365 1366 #define PFUDPS_NAMES { \ 1367 "NO_TRAFFIC", \ 1368 "SINGLE", \ 1369 "MULTIPLE", \ 1370 NULL \ 1371 } 1372 1373 /* Other protocol state enumeration */ 1374 #define PFOTHERS_NO_TRAFFIC 0 1375 #define PFOTHERS_SINGLE 1 1376 #define PFOTHERS_MULTIPLE 2 1377 1378 #define PFOTHERS_NSTATES 3 /* number of state levels */ 1379 1380 #define PFOTHERS_NAMES { \ 1381 "NO_TRAFFIC", \ 1382 "SINGLE", \ 1383 "MULTIPLE", \ 1384 NULL \ 1385 } 1386 1387 #define FCNT_STATE_SEARCH 0 1388 #define FCNT_STATE_INSERT 1 1389 #define FCNT_STATE_REMOVALS 2 1390 #define FCNT_MAX 3 1391 1392 #define SCNT_SRC_NODE_SEARCH 0 1393 #define SCNT_SRC_NODE_INSERT 1 1394 #define SCNT_SRC_NODE_REMOVALS 2 1395 #define SCNT_MAX 3 1396 1397 #define ACTION_SET(a, x) \ 1398 do { \ 1399 if ((a) != NULL) \ 1400 *(a) = (x); \ 1401 } while (0) 1402 1403 #ifdef __FreeBSD__ 1404 #define REASON_SET(a, x) \ 1405 do { \ 1406 if ((a) != NULL) \ 1407 *(a) = (x); \ 1408 if (x < PFRES_MAX) \ 1409 V_pf_status.counters[x]++; \ 1410 } while (0) 1411 #else 1412 #define REASON_SET(a, x) \ 1413 do { \ 1414 if ((a) != NULL) \ 1415 *(a) = (x); \ 1416 if (x < PFRES_MAX) \ 1417 pf_status.counters[x]++; \ 1418 } while (0) 1419 #endif 1420 1421 struct pf_status { 1422 u_int64_t counters[PFRES_MAX]; 1423 u_int64_t lcounters[LCNT_MAX]; /* limit counters */ 1424 u_int64_t fcounters[FCNT_MAX]; 1425 u_int64_t scounters[SCNT_MAX]; 1426 u_int64_t pcounters[2][2][3]; 1427 u_int64_t bcounters[2][2]; 1428 u_int64_t stateid; 1429 u_int32_t running; 1430 u_int32_t states; 1431 u_int32_t src_nodes; 1432 u_int32_t since; 1433 u_int32_t debug; 1434 u_int32_t hostid; 1435 char ifname[IFNAMSIZ]; 1436 u_int8_t pf_chksum[PF_MD5_DIGEST_LENGTH]; 1437 }; 1438 1439 struct cbq_opts { 1440 u_int minburst; 1441 u_int maxburst; 1442 u_int pktsize; 1443 u_int maxpktsize; 1444 u_int ns_per_byte; 1445 u_int maxidle; 1446 int minidle; 1447 u_int offtime; 1448 int flags; 1449 }; 1450 1451 struct priq_opts { 1452 int flags; 1453 }; 1454 1455 struct hfsc_opts { 1456 /* real-time service curve */ 1457 u_int rtsc_m1; /* slope of the 1st segment in bps */ 1458 u_int rtsc_d; /* the x-projection of m1 in msec */ 1459 u_int rtsc_m2; /* slope of the 2nd segment in bps */ 1460 /* link-sharing service curve */ 1461 u_int lssc_m1; 1462 u_int lssc_d; 1463 u_int lssc_m2; 1464 /* upper-limit service curve */ 1465 u_int ulsc_m1; 1466 u_int ulsc_d; 1467 u_int ulsc_m2; 1468 int flags; 1469 }; 1470 1471 struct pf_altq { 1472 char ifname[IFNAMSIZ]; 1473 1474 void *altq_disc; /* discipline-specific state */ 1475 TAILQ_ENTRY(pf_altq) entries; 1476 1477 /* scheduler spec */ 1478 u_int8_t scheduler; /* scheduler type */ 1479 u_int16_t tbrsize; /* tokenbucket regulator size */ 1480 u_int32_t ifbandwidth; /* interface bandwidth */ 1481 1482 /* queue spec */ 1483 char qname[PF_QNAME_SIZE]; /* queue name */ 1484 char parent[PF_QNAME_SIZE]; /* parent name */ 1485 u_int32_t parent_qid; /* parent queue id */ 1486 u_int32_t bandwidth; /* queue bandwidth */ 1487 u_int8_t priority; /* priority */ 1488 #ifdef __FreeBSD__ 1489 u_int8_t local_flags; /* dynamic interface */ 1490 #define PFALTQ_FLAG_IF_REMOVED 0x01 1491 #endif 1492 u_int16_t qlimit; /* queue size limit */ 1493 u_int16_t flags; /* misc flags */ 1494 union { 1495 struct cbq_opts cbq_opts; 1496 struct priq_opts priq_opts; 1497 struct hfsc_opts hfsc_opts; 1498 } pq_u; 1499 1500 u_int32_t qid; /* return value */ 1501 }; 1502 1503 struct pf_tagname { 1504 TAILQ_ENTRY(pf_tagname) entries; 1505 char name[PF_TAG_NAME_SIZE]; 1506 u_int16_t tag; 1507 int ref; 1508 }; 1509 1510 struct pf_divert { 1511 union { 1512 struct in_addr ipv4; 1513 struct in6_addr ipv6; 1514 } addr; 1515 u_int16_t port; 1516 }; 1517 1518 #define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */ 1519 #define PFFRAG_FRAG_HIWAT 1000 /* Number of fragmented packets */ 1520 #define PFFRAG_FRCENT_HIWAT 50000 /* Number of fragment cache entries */ 1521 #define PFFRAG_FRCACHE_HIWAT 10000 /* Number of fragment descriptors */ 1522 1523 #define PFR_KTABLE_HIWAT 1000 /* Number of tables */ 1524 #define PFR_KENTRY_HIWAT 200000 /* Number of table entries */ 1525 #define PFR_KENTRY_HIWAT_SMALL 100000 /* Number of table entries (tiny hosts) */ 1526 1527 /* 1528 * ioctl parameter structures 1529 */ 1530 1531 struct pfioc_pooladdr { 1532 u_int32_t action; 1533 u_int32_t ticket; 1534 u_int32_t nr; 1535 u_int32_t r_num; 1536 u_int8_t r_action; 1537 u_int8_t r_last; 1538 u_int8_t af; 1539 char anchor[MAXPATHLEN]; 1540 struct pf_pooladdr addr; 1541 }; 1542 1543 struct pfioc_rule { 1544 u_int32_t action; 1545 u_int32_t ticket; 1546 u_int32_t pool_ticket; 1547 u_int32_t nr; 1548 char anchor[MAXPATHLEN]; 1549 char anchor_call[MAXPATHLEN]; 1550 struct pf_rule rule; 1551 }; 1552 1553 struct pfioc_natlook { 1554 struct pf_addr saddr; 1555 struct pf_addr daddr; 1556 struct pf_addr rsaddr; 1557 struct pf_addr rdaddr; 1558 u_int16_t sport; 1559 u_int16_t dport; 1560 u_int16_t rsport; 1561 u_int16_t rdport; 1562 sa_family_t af; 1563 u_int8_t proto; 1564 u_int8_t direction; 1565 }; 1566 1567 struct pfioc_state { 1568 struct pfsync_state state; 1569 }; 1570 1571 struct pfioc_src_node_kill { 1572 sa_family_t psnk_af; 1573 struct pf_rule_addr psnk_src; 1574 struct pf_rule_addr psnk_dst; 1575 u_int psnk_killed; 1576 }; 1577 1578 struct pfioc_state_kill { 1579 struct pf_state_cmp psk_pfcmp; 1580 sa_family_t psk_af; 1581 int psk_proto; 1582 struct pf_rule_addr psk_src; 1583 struct pf_rule_addr psk_dst; 1584 char psk_ifname[IFNAMSIZ]; 1585 char psk_label[PF_RULE_LABEL_SIZE]; 1586 u_int psk_killed; 1587 }; 1588 1589 struct pfioc_states { 1590 int ps_len; 1591 union { 1592 caddr_t psu_buf; 1593 struct pfsync_state *psu_states; 1594 } ps_u; 1595 #define ps_buf ps_u.psu_buf 1596 #define ps_states ps_u.psu_states 1597 }; 1598 1599 struct pfioc_src_nodes { 1600 int psn_len; 1601 union { 1602 caddr_t psu_buf; 1603 struct pf_src_node *psu_src_nodes; 1604 } psn_u; 1605 #define psn_buf psn_u.psu_buf 1606 #define psn_src_nodes psn_u.psu_src_nodes 1607 }; 1608 1609 struct pfioc_if { 1610 char ifname[IFNAMSIZ]; 1611 }; 1612 1613 struct pfioc_tm { 1614 int timeout; 1615 int seconds; 1616 }; 1617 1618 struct pfioc_limit { 1619 int index; 1620 unsigned limit; 1621 }; 1622 1623 struct pfioc_altq { 1624 u_int32_t action; 1625 u_int32_t ticket; 1626 u_int32_t nr; 1627 struct pf_altq altq; 1628 }; 1629 1630 struct pfioc_qstats { 1631 u_int32_t ticket; 1632 u_int32_t nr; 1633 void *buf; 1634 int nbytes; 1635 u_int8_t scheduler; 1636 }; 1637 1638 struct pfioc_ruleset { 1639 u_int32_t nr; 1640 char path[MAXPATHLEN]; 1641 char name[PF_ANCHOR_NAME_SIZE]; 1642 }; 1643 1644 #define PF_RULESET_ALTQ (PF_RULESET_MAX) 1645 #define PF_RULESET_TABLE (PF_RULESET_MAX+1) 1646 struct pfioc_trans { 1647 int size; /* number of elements */ 1648 int esize; /* size of each element in bytes */ 1649 struct pfioc_trans_e { 1650 int rs_num; 1651 char anchor[MAXPATHLEN]; 1652 u_int32_t ticket; 1653 } *array; 1654 }; 1655 1656 #define PFR_FLAG_ATOMIC 0x00000001 1657 #define PFR_FLAG_DUMMY 0x00000002 1658 #define PFR_FLAG_FEEDBACK 0x00000004 1659 #define PFR_FLAG_CLSTATS 0x00000008 1660 #define PFR_FLAG_ADDRSTOO 0x00000010 1661 #define PFR_FLAG_REPLACE 0x00000020 1662 #define PFR_FLAG_ALLRSETS 0x00000040 1663 #define PFR_FLAG_ALLMASK 0x0000007F 1664 #ifdef _KERNEL 1665 #define PFR_FLAG_USERIOCTL 0x10000000 1666 #endif 1667 1668 struct pfioc_table { 1669 struct pfr_table pfrio_table; 1670 void *pfrio_buffer; 1671 int pfrio_esize; 1672 int pfrio_size; 1673 int pfrio_size2; 1674 int pfrio_nadd; 1675 int pfrio_ndel; 1676 int pfrio_nchange; 1677 int pfrio_flags; 1678 u_int32_t pfrio_ticket; 1679 }; 1680 #define pfrio_exists pfrio_nadd 1681 #define pfrio_nzero pfrio_nadd 1682 #define pfrio_nmatch pfrio_nadd 1683 #define pfrio_naddr pfrio_size2 1684 #define pfrio_setflag pfrio_size2 1685 #define pfrio_clrflag pfrio_nadd 1686 1687 struct pfioc_iface { 1688 char pfiio_name[IFNAMSIZ]; 1689 void *pfiio_buffer; 1690 int pfiio_esize; 1691 int pfiio_size; 1692 int pfiio_nzero; 1693 int pfiio_flags; 1694 }; 1695 1696 1697 /* 1698 * ioctl operations 1699 */ 1700 1701 #define DIOCSTART _IO ('D', 1) 1702 #define DIOCSTOP _IO ('D', 2) 1703 #define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule) 1704 #define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule) 1705 #define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule) 1706 /* XXX cut 8 - 17 */ 1707 #define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill) 1708 #define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state) 1709 #define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if) 1710 #define DIOCGETSTATUS _IOWR('D', 21, struct pf_status) 1711 #define DIOCCLRSTATUS _IO ('D', 22) 1712 #define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook) 1713 #define DIOCSETDEBUG _IOWR('D', 24, u_int32_t) 1714 #define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states) 1715 #define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule) 1716 /* XXX cut 26 - 28 */ 1717 #define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm) 1718 #define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm) 1719 #define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state) 1720 #define DIOCCLRRULECTRS _IO ('D', 38) 1721 #define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit) 1722 #define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit) 1723 #define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill) 1724 #define DIOCSTARTALTQ _IO ('D', 42) 1725 #define DIOCSTOPALTQ _IO ('D', 43) 1726 #define DIOCADDALTQ _IOWR('D', 45, struct pfioc_altq) 1727 #define DIOCGETALTQS _IOWR('D', 47, struct pfioc_altq) 1728 #define DIOCGETALTQ _IOWR('D', 48, struct pfioc_altq) 1729 #define DIOCCHANGEALTQ _IOWR('D', 49, struct pfioc_altq) 1730 #define DIOCGETQSTATS _IOWR('D', 50, struct pfioc_qstats) 1731 #define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr) 1732 #define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr) 1733 #define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr) 1734 #define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr) 1735 #define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr) 1736 /* XXX cut 55 - 57 */ 1737 #define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset) 1738 #define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset) 1739 #define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table) 1740 #define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table) 1741 #define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table) 1742 #define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table) 1743 #define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table) 1744 #define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table) 1745 #define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table) 1746 #define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table) 1747 #define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table) 1748 #define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table) 1749 #define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table) 1750 #define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table) 1751 #define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table) 1752 #define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table) 1753 #define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table) 1754 #define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table) 1755 #define DIOCOSFPFLUSH _IO('D', 78) 1756 #define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl) 1757 #define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl) 1758 #define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans) 1759 #define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans) 1760 #define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans) 1761 #define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes) 1762 #define DIOCCLRSRCNODES _IO('D', 85) 1763 #define DIOCSETHOSTID _IOWR('D', 86, u_int32_t) 1764 #define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface) 1765 #define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface) 1766 #define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface) 1767 #define DIOCKILLSRCNODES _IOWR('D', 91, struct pfioc_src_node_kill) 1768 #ifdef __FreeBSD__ 1769 struct pf_ifspeed { 1770 char ifname[IFNAMSIZ]; 1771 u_int32_t baudrate; 1772 }; 1773 #define DIOCGIFSPEED _IOWR('D', 92, struct pf_ifspeed) 1774 #endif 1775 1776 #ifdef _KERNEL 1777 RB_HEAD(pf_src_tree, pf_src_node); 1778 RB_PROTOTYPE(pf_src_tree, pf_src_node, entry, pf_src_compare); 1779 #ifdef __FreeBSD__ 1780 VNET_DECLARE(struct pf_src_tree, tree_src_tracking); 1781 #define V_tree_src_tracking VNET(tree_src_tracking) 1782 #else 1783 extern struct pf_src_tree tree_src_tracking; 1784 #endif 1785 1786 RB_HEAD(pf_state_tree_id, pf_state); 1787 RB_PROTOTYPE(pf_state_tree_id, pf_state, 1788 entry_id, pf_state_compare_id); 1789 #ifdef __FreeBSD__ 1790 VNET_DECLARE(struct pf_state_tree_id, tree_id); 1791 #define V_tree_id VNET(tree_id) 1792 VNET_DECLARE(struct pf_state_queue, state_list); 1793 #define V_state_list VNET(state_list) 1794 #else 1795 extern struct pf_state_tree_id tree_id; 1796 extern struct pf_state_queue state_list; 1797 #endif 1798 1799 TAILQ_HEAD(pf_poolqueue, pf_pool); 1800 #ifdef __FreeBSD__ 1801 VNET_DECLARE(struct pf_poolqueue, pf_pools[2]); 1802 #define V_pf_pools VNET(pf_pools) 1803 #else 1804 extern struct pf_poolqueue pf_pools[2]; 1805 #endif 1806 TAILQ_HEAD(pf_altqqueue, pf_altq); 1807 #ifdef __FreeBSD__ 1808 VNET_DECLARE(struct pf_altqqueue, pf_altqs[2]); 1809 #define V_pf_altqs VNET(pf_altqs) 1810 VNET_DECLARE(struct pf_palist, pf_pabuf); 1811 #define V_pf_pabuf VNET(pf_pabuf) 1812 #else 1813 extern struct pf_altqqueue pf_altqs[2]; 1814 extern struct pf_palist pf_pabuf; 1815 #endif 1816 1817 #ifdef __FreeBSD__ 1818 VNET_DECLARE(u_int32_t, ticket_altqs_active); 1819 #define V_ticket_altqs_active VNET(ticket_altqs_active) 1820 VNET_DECLARE(u_int32_t, ticket_altqs_inactive); 1821 #define V_ticket_altqs_inactive VNET(ticket_altqs_inactive) 1822 VNET_DECLARE(int, altqs_inactive_open); 1823 #define V_altqs_inactive_open VNET(altqs_inactive_open) 1824 VNET_DECLARE(u_int32_t, ticket_pabuf); 1825 #define V_ticket_pabuf VNET(ticket_pabuf) 1826 VNET_DECLARE(struct pf_altqqueue *, pf_altqs_active); 1827 #define V_pf_altqs_active VNET(pf_altqs_active) 1828 VNET_DECLARE(struct pf_altqqueue *, pf_altqs_inactive); 1829 #define V_pf_altqs_inactive VNET(pf_altqs_inactive) 1830 VNET_DECLARE(struct pf_poolqueue *, pf_pools_active); 1831 #define V_pf_pools_active VNET(pf_pools_active) 1832 VNET_DECLARE(struct pf_poolqueue *, pf_pools_inactive); 1833 #define V_pf_pools_inactive VNET(pf_pools_inactive) 1834 #else 1835 extern u_int32_t ticket_altqs_active; 1836 extern u_int32_t ticket_altqs_inactive; 1837 extern int altqs_inactive_open; 1838 extern u_int32_t ticket_pabuf; 1839 extern struct pf_altqqueue *pf_altqs_active; 1840 extern struct pf_altqqueue *pf_altqs_inactive; 1841 extern struct pf_poolqueue *pf_pools_active; 1842 extern struct pf_poolqueue *pf_pools_inactive; 1843 #endif 1844 extern int pf_tbladdr_setup(struct pf_ruleset *, 1845 struct pf_addr_wrap *); 1846 extern void pf_tbladdr_remove(struct pf_addr_wrap *); 1847 extern void pf_tbladdr_copyout(struct pf_addr_wrap *); 1848 extern void pf_calc_skip_steps(struct pf_rulequeue *); 1849 #ifdef __FreeBSD__ 1850 #ifdef ALTQ 1851 extern void pf_altq_ifnet_event(struct ifnet *, int); 1852 #endif 1853 VNET_DECLARE(uma_zone_t, pf_src_tree_pl); 1854 #define V_pf_src_tree_pl VNET(pf_src_tree_pl) 1855 VNET_DECLARE(uma_zone_t, pf_rule_pl); 1856 #define V_pf_rule_pl VNET(pf_rule_pl) 1857 VNET_DECLARE(uma_zone_t, pf_state_pl); 1858 #define V_pf_state_pl VNET(pf_state_pl) 1859 VNET_DECLARE(uma_zone_t, pf_state_key_pl); 1860 #define V_pf_state_key_pl VNET(pf_state_key_pl) 1861 VNET_DECLARE(uma_zone_t, pf_state_item_pl); 1862 #define V_pf_state_item_pl VNET(pf_state_item_pl) 1863 VNET_DECLARE(uma_zone_t, pf_altq_pl); 1864 #define V_pf_altq_pl VNET(pf_altq_pl) 1865 VNET_DECLARE(uma_zone_t, pf_pooladdr_pl); 1866 #define V_pf_pooladdr_pl VNET(pf_pooladdr_pl) 1867 VNET_DECLARE(uma_zone_t, pfr_ktable_pl); 1868 #define V_pfr_ktable_pl VNET(pfr_ktable_pl) 1869 VNET_DECLARE(uma_zone_t, pfr_kentry_pl); 1870 #define V_pfr_kentry_pl VNET(pfr_kentry_pl) 1871 VNET_DECLARE(uma_zone_t, pfr_kcounters_pl); 1872 #define V_pfr_kcounters_pl VNET(pfr_kcounters_pl) 1873 VNET_DECLARE(uma_zone_t, pf_cache_pl); 1874 #define V_pf_cache_pl VNET(pf_cache_pl) 1875 VNET_DECLARE(uma_zone_t, pf_cent_pl); 1876 #define V_pf_cent_pl VNET(pf_cent_pl) 1877 VNET_DECLARE(uma_zone_t, pf_state_scrub_pl); 1878 #define V_pf_state_scrub_pl VNET(pf_state_scrub_pl) 1879 VNET_DECLARE(uma_zone_t, pfi_addr_pl); 1880 #define V_pfi_addr_pl VNET(pfi_addr_pl) 1881 #else 1882 extern struct pool pf_src_tree_pl, pf_rule_pl; 1883 extern struct pool pf_state_pl, pf_state_key_pl, pf_state_item_pl, 1884 pf_altq_pl, pf_pooladdr_pl; 1885 extern struct pool pf_state_scrub_pl; 1886 #endif 1887 extern void pf_purge_thread(void *); 1888 #ifdef __FreeBSD__ 1889 extern int pf_purge_expired_src_nodes(int); 1890 extern int pf_purge_expired_states(u_int32_t , int); 1891 #else 1892 extern void pf_purge_expired_src_nodes(int); 1893 extern void pf_purge_expired_states(u_int32_t); 1894 #endif 1895 extern void pf_unlink_state(struct pf_state *); 1896 extern void pf_free_state(struct pf_state *); 1897 extern int pf_state_insert(struct pfi_kif *, 1898 struct pf_state_key *, 1899 struct pf_state_key *, 1900 struct pf_state *); 1901 extern int pf_insert_src_node(struct pf_src_node **, 1902 struct pf_rule *, struct pf_addr *, 1903 sa_family_t); 1904 void pf_src_tree_remove_state(struct pf_state *); 1905 extern struct pf_state *pf_find_state_byid(struct pf_state_cmp *); 1906 extern struct pf_state *pf_find_state_all(struct pf_state_key_cmp *, 1907 u_int, int *); 1908 extern void pf_print_state(struct pf_state *); 1909 extern void pf_print_flags(u_int8_t); 1910 extern u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t, 1911 u_int8_t); 1912 extern u_int16_t pf_proto_cksum_fixup(struct mbuf *, u_int16_t, 1913 u_int16_t, u_int16_t, u_int8_t); 1914 1915 #ifdef __FreeBSD__ 1916 VNET_DECLARE(struct ifnet *, sync_ifp); 1917 #define V_sync_ifp VNET(sync_ifp); 1918 VNET_DECLARE(struct pf_rule, pf_default_rule); 1919 #define V_pf_default_rule VNET(pf_default_rule) 1920 #else 1921 extern struct ifnet *sync_ifp; 1922 extern struct pf_rule pf_default_rule; 1923 #endif 1924 extern void pf_addrcpy(struct pf_addr *, struct pf_addr *, 1925 u_int8_t); 1926 void pf_rm_rule(struct pf_rulequeue *, 1927 struct pf_rule *); 1928 #ifndef __FreeBSD__ 1929 struct pf_divert *pf_find_divert(struct mbuf *); 1930 #endif 1931 1932 #ifdef INET 1933 #ifdef __FreeBSD__ 1934 int pf_test(int, struct ifnet *, struct mbuf **, struct ether_header *, 1935 struct inpcb *); 1936 #else 1937 int pf_test(int, struct ifnet *, struct mbuf **, struct ether_header *); 1938 #endif 1939 #endif /* INET */ 1940 1941 #ifdef INET6 1942 #ifdef __FreeBSD__ 1943 int pf_test6(int, struct ifnet *, struct mbuf **, struct ether_header *, 1944 struct inpcb *); 1945 #else 1946 int pf_test6(int, struct ifnet *, struct mbuf **, struct ether_header *); 1947 #endif 1948 void pf_poolmask(struct pf_addr *, struct pf_addr*, 1949 struct pf_addr *, struct pf_addr *, u_int8_t); 1950 void pf_addr_inc(struct pf_addr *, sa_family_t); 1951 #endif /* INET6 */ 1952 1953 #ifdef __FreeBSD__ 1954 u_int32_t pf_new_isn(struct pf_state *); 1955 #endif 1956 void *pf_pull_hdr(struct mbuf *, int, void *, int, u_short *, u_short *, 1957 sa_family_t); 1958 void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t); 1959 void pf_change_proto_a(struct mbuf *, void *, u_int16_t *, u_int32_t, 1960 u_int8_t); 1961 void pf_change_tcp_a(struct mbuf *, void *, u_int16_t *, u_int32_t); 1962 int pflog_packet(struct pfi_kif *, struct mbuf *, sa_family_t, u_int8_t, 1963 u_int8_t, struct pf_rule *, struct pf_rule *, struct pf_ruleset *, 1964 struct pf_pdesc *); 1965 void pf_send_deferred_syn(struct pf_state *); 1966 int pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *, 1967 struct pf_addr *, sa_family_t); 1968 int pf_match_addr_range(struct pf_addr *, struct pf_addr *, 1969 struct pf_addr *, sa_family_t); 1970 int pf_match(u_int8_t, u_int32_t, u_int32_t, u_int32_t); 1971 int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t); 1972 int pf_match_uid(u_int8_t, uid_t, uid_t, uid_t); 1973 int pf_match_gid(u_int8_t, gid_t, gid_t, gid_t); 1974 1975 void pf_normalize_init(void); 1976 int pf_normalize_ip(struct mbuf **, int, struct pfi_kif *, u_short *, 1977 struct pf_pdesc *); 1978 int pf_normalize_ip6(struct mbuf **, int, struct pfi_kif *, u_short *, 1979 struct pf_pdesc *); 1980 int pf_normalize_tcp(int, struct pfi_kif *, struct mbuf *, int, int, void *, 1981 struct pf_pdesc *); 1982 void pf_normalize_tcp_cleanup(struct pf_state *); 1983 int pf_normalize_tcp_init(struct mbuf *, int, struct pf_pdesc *, 1984 struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *); 1985 int pf_normalize_tcp_stateful(struct mbuf *, int, struct pf_pdesc *, 1986 u_short *, struct tcphdr *, struct pf_state *, 1987 struct pf_state_peer *, struct pf_state_peer *, int *); 1988 u_int32_t 1989 pf_state_expires(const struct pf_state *); 1990 void pf_purge_expired_fragments(void); 1991 int pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kif *, 1992 int); 1993 int pf_rtlabel_match(struct pf_addr *, sa_family_t, struct pf_addr_wrap *, 1994 int); 1995 #ifdef __FreeBSD__ 1996 int pf_socket_lookup(int, struct pf_pdesc *, struct inpcb *); 1997 #else 1998 int pf_socket_lookup(int, struct pf_pdesc *); 1999 #endif 2000 struct pf_state_key *pf_alloc_state_key(int); 2001 void pf_pkt_addr_changed(struct mbuf *); 2002 int pf_state_key_attach(struct pf_state_key *, struct pf_state *, int); 2003 void pfr_initialize(void); 2004 int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t); 2005 void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t, 2006 u_int64_t, int, int, int); 2007 int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, 2008 struct pf_addr **, struct pf_addr **, sa_family_t); 2009 void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *); 2010 struct pfr_ktable * 2011 pfr_attach_table(struct pf_ruleset *, char *, int); 2012 void pfr_detach_table(struct pfr_ktable *); 2013 int pfr_clr_tables(struct pfr_table *, int *, int); 2014 int pfr_add_tables(struct pfr_table *, int, int *, int); 2015 int pfr_del_tables(struct pfr_table *, int, int *, int); 2016 int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int); 2017 int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int); 2018 int pfr_clr_tstats(struct pfr_table *, int, int *, int); 2019 int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int); 2020 int pfr_clr_addrs(struct pfr_table *, int *, int); 2021 int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *, long); 2022 int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 2023 int); 2024 int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 2025 int); 2026 int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 2027 int *, int *, int *, int, u_int32_t); 2028 int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int); 2029 int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int); 2030 int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *, 2031 int); 2032 int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 2033 int); 2034 int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int); 2035 int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int); 2036 int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int); 2037 int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *, 2038 int *, u_int32_t, int); 2039 2040 #ifdef __FreeBSD__ 2041 VNET_DECLARE(struct pfi_kif *, pfi_all); 2042 #define V_pfi_all VNET(pfi_all) 2043 #else 2044 extern struct pfi_kif *pfi_all; 2045 #endif 2046 2047 void pfi_initialize(void); 2048 #ifdef __FreeBSD__ 2049 void pfi_cleanup(void); 2050 #endif 2051 struct pfi_kif *pfi_kif_get(const char *); 2052 void pfi_kif_ref(struct pfi_kif *, enum pfi_kif_refs); 2053 void pfi_kif_unref(struct pfi_kif *, enum pfi_kif_refs); 2054 int pfi_kif_match(struct pfi_kif *, struct pfi_kif *); 2055 void pfi_attach_ifnet(struct ifnet *); 2056 void pfi_detach_ifnet(struct ifnet *); 2057 void pfi_attach_ifgroup(struct ifg_group *); 2058 void pfi_detach_ifgroup(struct ifg_group *); 2059 void pfi_group_change(const char *); 2060 int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *, 2061 sa_family_t); 2062 int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t); 2063 void pfi_dynaddr_remove(struct pf_addr_wrap *); 2064 void pfi_dynaddr_copyout(struct pf_addr_wrap *); 2065 void pfi_update_status(const char *, struct pf_status *); 2066 int pfi_get_ifaces(const char *, struct pfi_kif *, int *); 2067 int pfi_set_flags(const char *, int); 2068 int pfi_clear_flags(const char *, int); 2069 2070 #ifdef __FreeBSD__ 2071 int pf_match_tag(struct mbuf *, struct pf_rule *, int *, 2072 struct pf_mtag *); 2073 #else 2074 int pf_match_tag(struct mbuf *, struct pf_rule *, int *); 2075 #endif 2076 u_int16_t pf_tagname2tag(char *); 2077 void pf_tag2tagname(u_int16_t, char *); 2078 void pf_tag_ref(u_int16_t); 2079 void pf_tag_unref(u_int16_t); 2080 #ifdef __FreeBSD__ 2081 int pf_tag_packet(struct mbuf *, int, int, struct pf_mtag *); 2082 #else 2083 int pf_tag_packet(struct mbuf *, int, int); 2084 #endif 2085 u_int32_t pf_qname2qid(char *); 2086 void pf_qid2qname(u_int32_t, char *); 2087 void pf_qid_unref(u_int32_t); 2088 2089 #ifdef __FreeBSD__ 2090 VNET_DECLARE(struct pf_status, pf_status); 2091 #define V_pf_status VNET(pf_status) 2092 #else 2093 extern struct pf_status pf_status; 2094 #endif 2095 2096 #ifdef __FreeBSD__ 2097 VNET_DECLARE(uma_zone_t, pf_frent_pl); 2098 #define V_pf_frent_pl VNET(pf_frent_pl) 2099 VNET_DECLARE(uma_zone_t, pf_frag_pl); 2100 #define V_pf_frag_pl VNET(pf_frag_pl) 2101 VNET_DECLARE(struct sx, pf_consistency_lock); 2102 #define V_pf_consistency_lock VNET(pf_consistency_lock) 2103 #else 2104 extern struct pool pf_frent_pl, pf_frag_pl; 2105 extern struct rwlock pf_consistency_lock; 2106 #endif 2107 2108 struct pf_pool_limit { 2109 void *pp; 2110 unsigned limit; 2111 }; 2112 #ifdef __FreeBSD__ 2113 VNET_DECLARE(struct pf_pool_limit, pf_pool_limits[PF_LIMIT_MAX]); 2114 #define V_pf_pool_limits VNET(pf_pool_limits) 2115 #else 2116 extern struct pf_pool_limit pf_pool_limits[PF_LIMIT_MAX]; 2117 #endif 2118 2119 #ifdef __FreeBSD__ 2120 struct pf_frent { 2121 LIST_ENTRY(pf_frent) fr_next; 2122 struct ip *fr_ip; 2123 struct mbuf *fr_m; 2124 }; 2125 2126 struct pf_frcache { 2127 LIST_ENTRY(pf_frcache) fr_next; 2128 uint16_t fr_off; 2129 uint16_t fr_end; 2130 }; 2131 2132 struct pf_fragment { 2133 RB_ENTRY(pf_fragment) fr_entry; 2134 TAILQ_ENTRY(pf_fragment) frag_next; 2135 struct in_addr fr_src; 2136 struct in_addr fr_dst; 2137 u_int8_t fr_p; /* protocol of this fragment */ 2138 u_int8_t fr_flags; /* status flags */ 2139 u_int16_t fr_id; /* fragment id for reassemble */ 2140 u_int16_t fr_max; /* fragment data max */ 2141 u_int32_t fr_timeout; 2142 #define fr_queue fr_u.fru_queue 2143 #define fr_cache fr_u.fru_cache 2144 union { 2145 LIST_HEAD(pf_fragq, pf_frent) fru_queue; /* buffering */ 2146 LIST_HEAD(pf_cacheq, pf_frcache) fru_cache; /* non-buf */ 2147 } fr_u; 2148 }; 2149 #endif /* (__FreeBSD__) */ 2150 2151 #endif /* _KERNEL */ 2152 2153 #ifdef __FreeBSD__ 2154 #ifdef _KERNEL 2155 VNET_DECLARE(struct pf_anchor_global, pf_anchors); 2156 #define V_pf_anchors VNET(pf_anchors) 2157 VNET_DECLARE(struct pf_anchor, pf_main_anchor); 2158 #define V_pf_main_anchor VNET(pf_main_anchor) 2159 #define pf_main_ruleset V_pf_main_anchor.ruleset 2160 #endif 2161 #else 2162 extern struct pf_anchor_global pf_anchors; 2163 extern struct pf_anchor pf_main_anchor; 2164 #define pf_main_ruleset pf_main_anchor.ruleset 2165 #endif 2166 2167 /* these ruleset functions can be linked into userland programs (pfctl) */ 2168 int pf_get_ruleset_number(u_int8_t); 2169 void pf_init_ruleset(struct pf_ruleset *); 2170 int pf_anchor_setup(struct pf_rule *, 2171 const struct pf_ruleset *, const char *); 2172 int pf_anchor_copyout(const struct pf_ruleset *, 2173 const struct pf_rule *, struct pfioc_rule *); 2174 void pf_anchor_remove(struct pf_rule *); 2175 void pf_remove_if_empty_ruleset(struct pf_ruleset *); 2176 struct pf_anchor *pf_find_anchor(const char *); 2177 struct pf_ruleset *pf_find_ruleset(const char *); 2178 struct pf_ruleset *pf_find_or_create_ruleset(const char *); 2179 void pf_rs_initialize(void); 2180 2181 #ifndef __FreeBSD__ 2182 #ifdef _KERNEL 2183 int pf_anchor_copyout(const struct pf_ruleset *, 2184 const struct pf_rule *, struct pfioc_rule *); 2185 void pf_anchor_remove(struct pf_rule *); 2186 2187 #endif /* _KERNEL */ 2188 #endif 2189 2190 /* The fingerprint functions can be linked into userland programs (tcpdump) */ 2191 int pf_osfp_add(struct pf_osfp_ioctl *); 2192 #ifdef _KERNEL 2193 struct pf_osfp_enlist * 2194 pf_osfp_fingerprint(struct pf_pdesc *, struct mbuf *, int, 2195 const struct tcphdr *); 2196 #endif /* _KERNEL */ 2197 struct pf_osfp_enlist * 2198 pf_osfp_fingerprint_hdr(const struct ip *, const struct ip6_hdr *, 2199 const struct tcphdr *); 2200 void pf_osfp_flush(void); 2201 int pf_osfp_get(struct pf_osfp_ioctl *); 2202 #ifdef __FreeBSD__ 2203 int pf_osfp_initialize(void); 2204 void pf_osfp_cleanup(void); 2205 #else 2206 void pf_osfp_initialize(void); 2207 #endif 2208 int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t); 2209 struct pf_os_fingerprint * 2210 pf_osfp_validate(void); 2211 2212 #ifdef _KERNEL 2213 void pf_print_host(struct pf_addr *, u_int16_t, u_int8_t); 2214 2215 void pf_step_into_anchor(int *, struct pf_ruleset **, int, 2216 struct pf_rule **, struct pf_rule **, int *); 2217 int pf_step_out_of_anchor(int *, struct pf_ruleset **, 2218 int, struct pf_rule **, struct pf_rule **, 2219 int *); 2220 2221 int pf_map_addr(u_int8_t, struct pf_rule *, 2222 struct pf_addr *, struct pf_addr *, 2223 struct pf_addr *, struct pf_src_node **); 2224 struct pf_rule *pf_get_translation(struct pf_pdesc *, struct mbuf *, 2225 int, int, struct pfi_kif *, struct pf_src_node **, 2226 struct pf_state_key **, struct pf_state_key **, 2227 struct pf_state_key **, struct pf_state_key **, 2228 struct pf_addr *, struct pf_addr *, 2229 u_int16_t, u_int16_t); 2230 2231 int pf_state_key_setup(struct pf_pdesc *, struct pf_rule *, 2232 struct pf_state_key **, struct pf_state_key **, 2233 struct pf_state_key **, struct pf_state_key **, 2234 struct pf_addr *, struct pf_addr *, 2235 u_int16_t, u_int16_t); 2236 #endif /* _KERNEL */ 2237 2238 2239 #endif /* _NET_PFVAR_H_ */ 2240