pf.h revision 223637
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 63struct ip; 64struct ip6_hdr; 65#ifdef __FreeBSD__ 66struct 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 79enum { PF_INOUT, PF_IN, PF_OUT }; 80enum { 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 }; 82enum { PF_RULESET_SCRUB, PF_RULESET_FILTER, PF_RULESET_NAT, 83 PF_RULESET_BINAT, PF_RULESET_RDR, PF_RULESET_MAX }; 84enum { 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 }; 86enum { PF_DEBUG_NONE, PF_DEBUG_URGENT, PF_DEBUG_MISC, PF_DEBUG_NOISY }; 87enum { 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 }; 90enum { PF_GET_NONE, PF_GET_CLR_CNTR }; 91enum { 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 */ 97enum { 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 127enum { PF_NOPFROUTE, PF_FASTROUTE, PF_ROUTETO, PF_DUPTO, PF_REPLYTO }; 128enum { 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 131enum { PF_POOL_NONE, PF_POOL_BITMASK, PF_POOL_RANDOM, 132 PF_POOL_SRCHASH, PF_POOL_ROUNDROBIN }; 133enum { 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 145struct 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 168struct 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 194struct 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_WAIT 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__ 240VNET_DECLARE(struct mtx, pf_task_mtx); 241#define V_pf_task_mtx VNET(pf_task_mtx) 242 243#define PF_ASSERT(h) mtx_assert(&V_pf_task_mtx, (h)) 244 245#define PF_LOCK() do { \ 246 PF_ASSERT(MA_NOTOWNED); \ 247 mtx_lock(&V_pf_task_mtx); \ 248} while(0) 249#define PF_UNLOCK() do { \ 250 PF_ASSERT(MA_OWNED); \ 251 mtx_unlock(&V_pf_task_mtx); \ 252} while(0) 253#else 254extern struct mtx pf_task_mtx; 255 256#define PF_ASSERT(h) mtx_assert(&pf_task_mtx, (h)) 257 258#define PF_LOCK() do { \ 259 PF_ASSERT(MA_NOTOWNED); \ 260 mtx_lock(&pf_task_mtx); \ 261} while(0) 262#define PF_UNLOCK() do { \ 263 PF_ASSERT(MA_OWNED); \ 264 mtx_unlock(&pf_task_mtx); \ 265} while(0) 266#endif 267 268#define PF_COPYIN(uaddr, kaddr, len, r) do { \ 269 PF_UNLOCK(); \ 270 r = copyin((uaddr), (kaddr), (len)); \ 271 PF_LOCK(); \ 272} while(0) 273 274#define PF_COPYOUT(kaddr, uaddr, len, r) do { \ 275 PF_UNLOCK(); \ 276 r = copyout((kaddr), (uaddr), (len)); \ 277 PF_LOCK(); \ 278} while(0) 279 280extern void init_pf_mutex(void); 281extern void destroy_pf_mutex(void); 282 283#define PF_MODVER 1 284#define PFLOG_MODVER 1 285#define PFSYNC_MODVER 1 286 287#define PFLOG_MINVER 1 288#define PFLOG_PREFVER PFLOG_MODVER 289#define PFLOG_MAXVER 1 290#define PFSYNC_MINVER 1 291#define PFSYNC_PREFVER PFSYNC_MODVER 292#define PFSYNC_MAXVER 1 293#endif /* __FreeBSD__ */ 294#ifdef INET 295#ifndef INET6 296#define PF_INET_ONLY 297#endif /* ! INET6 */ 298#endif /* INET */ 299 300#ifdef INET6 301#ifndef INET 302#define PF_INET6_ONLY 303#endif /* ! INET */ 304#endif /* INET6 */ 305 306#ifdef INET 307#ifdef INET6 308#define PF_INET_INET6 309#endif /* INET6 */ 310#endif /* INET */ 311 312#else 313 314#define PF_INET_INET6 315 316#endif /* _KERNEL */ 317 318/* Both IPv4 and IPv6 */ 319#ifdef PF_INET_INET6 320 321#define PF_AEQ(a, b, c) \ 322 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \ 323 ((a)->addr32[3] == (b)->addr32[3] && \ 324 (a)->addr32[2] == (b)->addr32[2] && \ 325 (a)->addr32[1] == (b)->addr32[1] && \ 326 (a)->addr32[0] == (b)->addr32[0])) \ 327 328#define PF_ANEQ(a, b, c) \ 329 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \ 330 ((a)->addr32[3] != (b)->addr32[3] || \ 331 (a)->addr32[2] != (b)->addr32[2] || \ 332 (a)->addr32[1] != (b)->addr32[1] || \ 333 (a)->addr32[0] != (b)->addr32[0])) \ 334 335#define PF_AZERO(a, c) \ 336 ((c == AF_INET && !(a)->addr32[0]) || \ 337 (!(a)->addr32[0] && !(a)->addr32[1] && \ 338 !(a)->addr32[2] && !(a)->addr32[3] )) \ 339 340#define PF_MATCHA(n, a, m, b, f) \ 341 pf_match_addr(n, a, m, b, f) 342 343#define PF_ACPY(a, b, f) \ 344 pf_addrcpy(a, b, f) 345 346#define PF_AINC(a, f) \ 347 pf_addr_inc(a, f) 348 349#define PF_POOLMASK(a, b, c, d, f) \ 350 pf_poolmask(a, b, c, d, f) 351 352#else 353 354/* Just IPv6 */ 355 356#ifdef PF_INET6_ONLY 357 358#define PF_AEQ(a, b, c) \ 359 ((a)->addr32[3] == (b)->addr32[3] && \ 360 (a)->addr32[2] == (b)->addr32[2] && \ 361 (a)->addr32[1] == (b)->addr32[1] && \ 362 (a)->addr32[0] == (b)->addr32[0]) \ 363 364#define PF_ANEQ(a, b, c) \ 365 ((a)->addr32[3] != (b)->addr32[3] || \ 366 (a)->addr32[2] != (b)->addr32[2] || \ 367 (a)->addr32[1] != (b)->addr32[1] || \ 368 (a)->addr32[0] != (b)->addr32[0]) \ 369 370#define PF_AZERO(a, c) \ 371 (!(a)->addr32[0] && \ 372 !(a)->addr32[1] && \ 373 !(a)->addr32[2] && \ 374 !(a)->addr32[3] ) \ 375 376#define PF_MATCHA(n, a, m, b, f) \ 377 pf_match_addr(n, a, m, b, f) 378 379#define PF_ACPY(a, b, f) \ 380 pf_addrcpy(a, b, f) 381 382#define PF_AINC(a, f) \ 383 pf_addr_inc(a, f) 384 385#define PF_POOLMASK(a, b, c, d, f) \ 386 pf_poolmask(a, b, c, d, f) 387 388#else 389 390/* Just IPv4 */ 391#ifdef PF_INET_ONLY 392 393#define PF_AEQ(a, b, c) \ 394 ((a)->addr32[0] == (b)->addr32[0]) 395 396#define PF_ANEQ(a, b, c) \ 397 ((a)->addr32[0] != (b)->addr32[0]) 398 399#define PF_AZERO(a, c) \ 400 (!(a)->addr32[0]) 401 402#define PF_MATCHA(n, a, m, b, f) \ 403 pf_match_addr(n, a, m, b, f) 404 405#define PF_ACPY(a, b, f) \ 406 (a)->v4.s_addr = (b)->v4.s_addr 407 408#define PF_AINC(a, f) \ 409 do { \ 410 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \ 411 } while (0) 412 413#define PF_POOLMASK(a, b, c, d, f) \ 414 do { \ 415 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \ 416 (((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \ 417 } while (0) 418 419#endif /* PF_INET_ONLY */ 420#endif /* PF_INET6_ONLY */ 421#endif /* PF_INET_INET6 */ 422 423#define PF_MISMATCHAW(aw, x, af, neg, ifp) \ 424 ( \ 425 (((aw)->type == PF_ADDR_NOROUTE && \ 426 pf_routable((x), (af), NULL)) || \ 427 (((aw)->type == PF_ADDR_URPFFAILED && (ifp) != NULL && \ 428 pf_routable((x), (af), (ifp))) || \ 429 ((aw)->type == PF_ADDR_RTLABEL && \ 430 !pf_rtlabel_match((x), (af), (aw))) || \ 431 ((aw)->type == PF_ADDR_TABLE && \ 432 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \ 433 ((aw)->type == PF_ADDR_DYNIFTL && \ 434 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \ 435 ((aw)->type == PF_ADDR_RANGE && \ 436 !pf_match_addr_range(&(aw)->v.a.addr, \ 437 &(aw)->v.a.mask, (x), (af))) || \ 438 ((aw)->type == PF_ADDR_ADDRMASK && \ 439 !PF_AZERO(&(aw)->v.a.mask, (af)) && \ 440 !PF_MATCHA(0, &(aw)->v.a.addr, \ 441 &(aw)->v.a.mask, (x), (af))))) != \ 442 (neg) \ 443 ) 444 445 446struct pf_rule_uid { 447 uid_t uid[2]; 448 u_int8_t op; 449}; 450 451struct pf_rule_gid { 452 uid_t gid[2]; 453 u_int8_t op; 454}; 455 456struct pf_rule_addr { 457 struct pf_addr_wrap addr; 458 u_int16_t port[2]; 459 u_int8_t neg; 460 u_int8_t port_op; 461}; 462 463struct pf_pooladdr { 464 struct pf_addr_wrap addr; 465 TAILQ_ENTRY(pf_pooladdr) entries; 466 char ifname[IFNAMSIZ]; 467 struct pfi_kif *kif; 468}; 469 470TAILQ_HEAD(pf_palist, pf_pooladdr); 471 472struct pf_poolhashkey { 473 union { 474 u_int8_t key8[16]; 475 u_int16_t key16[8]; 476 u_int32_t key32[4]; 477 } pfk; /* 128-bit hash key */ 478#define key8 pfk.key8 479#define key16 pfk.key16 480#define key32 pfk.key32 481}; 482 483struct pf_pool { 484 struct pf_palist list; 485 struct pf_pooladdr *cur; 486 struct pf_poolhashkey key; 487 struct pf_addr counter; 488 int tblidx; 489 u_int16_t proxy_port[2]; 490 u_int8_t port_op; 491 u_int8_t opts; 492}; 493 494 495/* A packed Operating System description for fingerprinting */ 496typedef u_int32_t pf_osfp_t; 497#define PF_OSFP_ANY ((pf_osfp_t)0) 498#define PF_OSFP_UNKNOWN ((pf_osfp_t)-1) 499#define PF_OSFP_NOMATCH ((pf_osfp_t)-2) 500 501struct pf_osfp_entry { 502 SLIST_ENTRY(pf_osfp_entry) fp_entry; 503 pf_osfp_t fp_os; 504 int fp_enflags; 505#define PF_OSFP_EXPANDED 0x001 /* expanded entry */ 506#define PF_OSFP_GENERIC 0x002 /* generic signature */ 507#define PF_OSFP_NODETAIL 0x004 /* no p0f details */ 508#define PF_OSFP_LEN 32 509 char fp_class_nm[PF_OSFP_LEN]; 510 char fp_version_nm[PF_OSFP_LEN]; 511 char fp_subtype_nm[PF_OSFP_LEN]; 512}; 513#define PF_OSFP_ENTRY_EQ(a, b) \ 514 ((a)->fp_os == (b)->fp_os && \ 515 memcmp((a)->fp_class_nm, (b)->fp_class_nm, PF_OSFP_LEN) == 0 && \ 516 memcmp((a)->fp_version_nm, (b)->fp_version_nm, PF_OSFP_LEN) == 0 && \ 517 memcmp((a)->fp_subtype_nm, (b)->fp_subtype_nm, PF_OSFP_LEN) == 0) 518 519/* handle pf_osfp_t packing */ 520#define _FP_RESERVED_BIT 1 /* For the special negative #defines */ 521#define _FP_UNUSED_BITS 1 522#define _FP_CLASS_BITS 10 /* OS Class (Windows, Linux) */ 523#define _FP_VERSION_BITS 10 /* OS version (95, 98, NT, 2.4.54, 3.2) */ 524#define _FP_SUBTYPE_BITS 10 /* patch level (NT SP4, SP3, ECN patch) */ 525#define PF_OSFP_UNPACK(osfp, class, version, subtype) do { \ 526 (class) = ((osfp) >> (_FP_VERSION_BITS+_FP_SUBTYPE_BITS)) & \ 527 ((1 << _FP_CLASS_BITS) - 1); \ 528 (version) = ((osfp) >> _FP_SUBTYPE_BITS) & \ 529 ((1 << _FP_VERSION_BITS) - 1);\ 530 (subtype) = (osfp) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 531} while(0) 532#define PF_OSFP_PACK(osfp, class, version, subtype) do { \ 533 (osfp) = ((class) & ((1 << _FP_CLASS_BITS) - 1)) << (_FP_VERSION_BITS \ 534 + _FP_SUBTYPE_BITS); \ 535 (osfp) |= ((version) & ((1 << _FP_VERSION_BITS) - 1)) << \ 536 _FP_SUBTYPE_BITS; \ 537 (osfp) |= (subtype) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 538} while(0) 539 540/* the fingerprint of an OSes TCP SYN packet */ 541typedef u_int64_t pf_tcpopts_t; 542struct pf_os_fingerprint { 543 SLIST_HEAD(pf_osfp_enlist, pf_osfp_entry) fp_oses; /* list of matches */ 544 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 545 u_int16_t fp_wsize; /* TCP window size */ 546 u_int16_t fp_psize; /* ip->ip_len */ 547 u_int16_t fp_mss; /* TCP MSS */ 548 u_int16_t fp_flags; 549#define PF_OSFP_WSIZE_MOD 0x0001 /* Window modulus */ 550#define PF_OSFP_WSIZE_DC 0x0002 /* Window don't care */ 551#define PF_OSFP_WSIZE_MSS 0x0004 /* Window multiple of MSS */ 552#define PF_OSFP_WSIZE_MTU 0x0008 /* Window multiple of MTU */ 553#define PF_OSFP_PSIZE_MOD 0x0010 /* packet size modulus */ 554#define PF_OSFP_PSIZE_DC 0x0020 /* packet size don't care */ 555#define PF_OSFP_WSCALE 0x0040 /* TCP window scaling */ 556#define PF_OSFP_WSCALE_MOD 0x0080 /* TCP window scale modulus */ 557#define PF_OSFP_WSCALE_DC 0x0100 /* TCP window scale dont-care */ 558#define PF_OSFP_MSS 0x0200 /* TCP MSS */ 559#define PF_OSFP_MSS_MOD 0x0400 /* TCP MSS modulus */ 560#define PF_OSFP_MSS_DC 0x0800 /* TCP MSS dont-care */ 561#define PF_OSFP_DF 0x1000 /* IPv4 don't fragment bit */ 562#define PF_OSFP_TS0 0x2000 /* Zero timestamp */ 563#define PF_OSFP_INET6 0x4000 /* IPv6 */ 564 u_int8_t fp_optcnt; /* TCP option count */ 565 u_int8_t fp_wscale; /* TCP window scaling */ 566 u_int8_t fp_ttl; /* IPv4 TTL */ 567#define PF_OSFP_MAXTTL_OFFSET 40 568/* TCP options packing */ 569#define PF_OSFP_TCPOPT_NOP 0x0 /* TCP NOP option */ 570#define PF_OSFP_TCPOPT_WSCALE 0x1 /* TCP window scaling option */ 571#define PF_OSFP_TCPOPT_MSS 0x2 /* TCP max segment size opt */ 572#define PF_OSFP_TCPOPT_SACK 0x3 /* TCP SACK OK option */ 573#define PF_OSFP_TCPOPT_TS 0x4 /* TCP timestamp option */ 574#define PF_OSFP_TCPOPT_BITS 3 /* bits used by each option */ 575#define PF_OSFP_MAX_OPTS \ 576 (sizeof(((struct pf_os_fingerprint *)0)->fp_tcpopts) * 8) \ 577 / PF_OSFP_TCPOPT_BITS 578 579 SLIST_ENTRY(pf_os_fingerprint) fp_next; 580}; 581 582struct pf_osfp_ioctl { 583 struct pf_osfp_entry fp_os; 584 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 585 u_int16_t fp_wsize; /* TCP window size */ 586 u_int16_t fp_psize; /* ip->ip_len */ 587 u_int16_t fp_mss; /* TCP MSS */ 588 u_int16_t fp_flags; 589 u_int8_t fp_optcnt; /* TCP option count */ 590 u_int8_t fp_wscale; /* TCP window scaling */ 591 u_int8_t fp_ttl; /* IPv4 TTL */ 592 593 int fp_getnum; /* DIOCOSFPGET number */ 594}; 595 596 597union pf_rule_ptr { 598 struct pf_rule *ptr; 599 u_int32_t nr; 600}; 601 602#define PF_ANCHOR_NAME_SIZE 64 603 604struct pf_rule { 605 struct pf_rule_addr src; 606 struct pf_rule_addr dst; 607#define PF_SKIP_IFP 0 608#define PF_SKIP_DIR 1 609#define PF_SKIP_AF 2 610#define PF_SKIP_PROTO 3 611#define PF_SKIP_SRC_ADDR 4 612#define PF_SKIP_SRC_PORT 5 613#define PF_SKIP_DST_ADDR 6 614#define PF_SKIP_DST_PORT 7 615#define PF_SKIP_COUNT 8 616 union pf_rule_ptr skip[PF_SKIP_COUNT]; 617#define PF_RULE_LABEL_SIZE 64 618 char label[PF_RULE_LABEL_SIZE]; 619#define PF_QNAME_SIZE 64 620 char ifname[IFNAMSIZ]; 621 char qname[PF_QNAME_SIZE]; 622 char pqname[PF_QNAME_SIZE]; 623#define PF_TAG_NAME_SIZE 64 624 char tagname[PF_TAG_NAME_SIZE]; 625 char match_tagname[PF_TAG_NAME_SIZE]; 626 627 char overload_tblname[PF_TABLE_NAME_SIZE]; 628 629 TAILQ_ENTRY(pf_rule) entries; 630 struct pf_pool rpool; 631 632 u_int64_t evaluations; 633 u_int64_t packets[2]; 634 u_int64_t bytes[2]; 635 636 struct pfi_kif *kif; 637 struct pf_anchor *anchor; 638 struct pfr_ktable *overload_tbl; 639 640 pf_osfp_t os_fingerprint; 641 642 int rtableid; 643 u_int32_t timeout[PFTM_MAX]; 644 u_int32_t states_cur; 645 u_int32_t states_tot; 646 u_int32_t max_states; 647 u_int32_t src_nodes; 648 u_int32_t max_src_nodes; 649 u_int32_t max_src_states; 650 u_int32_t spare1; /* netgraph */ 651 u_int32_t max_src_conn; 652 struct { 653 u_int32_t limit; 654 u_int32_t seconds; 655 } max_src_conn_rate; 656 u_int32_t qid; 657 u_int32_t pqid; 658 u_int32_t rt_listid; 659 u_int32_t nr; 660 u_int32_t prob; 661 uid_t cuid; 662 pid_t cpid; 663 664 u_int16_t return_icmp; 665 u_int16_t return_icmp6; 666 u_int16_t max_mss; 667 u_int16_t tag; 668 u_int16_t match_tag; 669 u_int16_t spare2; /* netgraph */ 670 671 struct pf_rule_uid uid; 672 struct pf_rule_gid gid; 673 674 u_int32_t rule_flag; 675 u_int8_t action; 676 u_int8_t direction; 677 u_int8_t log; 678 u_int8_t logif; 679 u_int8_t quick; 680 u_int8_t ifnot; 681 u_int8_t match_tag_not; 682 u_int8_t natpass; 683 684#define PF_STATE_NORMAL 0x1 685#define PF_STATE_MODULATE 0x2 686#define PF_STATE_SYNPROXY 0x3 687 u_int8_t keep_state; 688 sa_family_t af; 689 u_int8_t proto; 690 u_int8_t type; 691 u_int8_t code; 692 u_int8_t flags; 693 u_int8_t flagset; 694 u_int8_t min_ttl; 695 u_int8_t allow_opts; 696 u_int8_t rt; 697 u_int8_t return_ttl; 698 u_int8_t tos; 699 u_int8_t set_tos; 700 u_int8_t anchor_relative; 701 u_int8_t anchor_wildcard; 702 703#define PF_FLUSH 0x01 704#define PF_FLUSH_GLOBAL 0x02 705 u_int8_t flush; 706 707 struct { 708 struct pf_addr addr; 709 u_int16_t port; 710 } divert; 711}; 712 713/* rule flags */ 714#define PFRULE_DROP 0x0000 715#define PFRULE_RETURNRST 0x0001 716#define PFRULE_FRAGMENT 0x0002 717#define PFRULE_RETURNICMP 0x0004 718#define PFRULE_RETURN 0x0008 719#define PFRULE_NOSYNC 0x0010 720#define PFRULE_SRCTRACK 0x0020 /* track source states */ 721#define PFRULE_RULESRCTRACK 0x0040 /* per rule */ 722 723/* scrub flags */ 724#define PFRULE_NODF 0x0100 725#define PFRULE_FRAGCROP 0x0200 /* non-buffering frag cache */ 726#define PFRULE_FRAGDROP 0x0400 /* drop funny fragments */ 727#define PFRULE_RANDOMID 0x0800 728#define PFRULE_REASSEMBLE_TCP 0x1000 729#define PFRULE_SET_TOS 0x2000 730 731/* rule flags again */ 732#define PFRULE_IFBOUND 0x00010000 /* if-bound */ 733#define PFRULE_STATESLOPPY 0x00020000 /* sloppy state tracking */ 734#define PFRULE_PFLOW 0x00040000 735 736#define PFSTATE_HIWAT 10000 /* default state table size */ 737#define PFSTATE_ADAPT_START 6000 /* default adaptive timeout start */ 738#define PFSTATE_ADAPT_END 12000 /* default adaptive timeout end */ 739 740 741struct pf_threshold { 742 u_int32_t limit; 743#define PF_THRESHOLD_MULT 1000 744#define PF_THRESHOLD_MAX 0xffffffff / PF_THRESHOLD_MULT 745 u_int32_t seconds; 746 u_int32_t count; 747 u_int32_t last; 748}; 749 750struct pf_src_node { 751 RB_ENTRY(pf_src_node) entry; 752 struct pf_addr addr; 753 struct pf_addr raddr; 754 union pf_rule_ptr rule; 755 struct pfi_kif *kif; 756 u_int64_t bytes[2]; 757 u_int64_t packets[2]; 758 u_int32_t states; 759 u_int32_t conn; 760 struct pf_threshold conn_rate; 761 u_int32_t creation; 762 u_int32_t expire; 763 sa_family_t af; 764 u_int8_t ruletype; 765}; 766 767#define PFSNODE_HIWAT 10000 /* default source node table size */ 768 769struct pf_state_scrub { 770 struct timeval pfss_last; /* time received last packet */ 771 u_int32_t pfss_tsecr; /* last echoed timestamp */ 772 u_int32_t pfss_tsval; /* largest timestamp */ 773 u_int32_t pfss_tsval0; /* original timestamp */ 774 u_int16_t pfss_flags; 775#define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */ 776#define PFSS_PAWS 0x0010 /* stricter PAWS checks */ 777#define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */ 778#define PFSS_DATA_TS 0x0040 /* timestamp on data packets */ 779#define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */ 780 u_int8_t pfss_ttl; /* stashed TTL */ 781 u_int8_t pad; 782 u_int32_t pfss_ts_mod; /* timestamp modulation */ 783}; 784 785struct pf_state_host { 786 struct pf_addr addr; 787 u_int16_t port; 788 u_int16_t pad; 789}; 790 791struct pf_state_peer { 792 struct pf_state_scrub *scrub; /* state is scrubbed */ 793 u_int32_t seqlo; /* Max sequence number sent */ 794 u_int32_t seqhi; /* Max the other end ACKd + win */ 795 u_int32_t seqdiff; /* Sequence number modulator */ 796 u_int16_t max_win; /* largest window (pre scaling) */ 797 u_int16_t mss; /* Maximum segment size option */ 798 u_int8_t state; /* active state level */ 799 u_int8_t wscale; /* window scaling factor */ 800 u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */ 801 u_int8_t pad[1]; 802}; 803 804TAILQ_HEAD(pf_state_queue, pf_state); 805 806/* keep synced with struct pf_state_key, used in RB_FIND */ 807struct pf_state_key_cmp { 808 struct pf_addr addr[2]; 809 u_int16_t port[2]; 810 sa_family_t af; 811 u_int8_t proto; 812 u_int8_t pad[2]; 813}; 814 815struct pf_state_item { 816 TAILQ_ENTRY(pf_state_item) entry; 817 struct pf_state *s; 818}; 819 820TAILQ_HEAD(pf_statelisthead, pf_state_item); 821 822struct pf_state_key { 823 struct pf_addr addr[2]; 824 u_int16_t port[2]; 825 sa_family_t af; 826 u_int8_t proto; 827 u_int8_t pad[2]; 828 829 RB_ENTRY(pf_state_key) entry; 830 struct pf_statelisthead states; 831 struct pf_state_key *reverse; 832 struct inpcb *inp; 833}; 834 835/* keep synced with struct pf_state, used in RB_FIND */ 836struct pf_state_cmp { 837 u_int64_t id; 838 u_int32_t creatorid; 839 u_int8_t direction; 840 u_int8_t pad[3]; 841}; 842 843struct pf_state { 844 u_int64_t id; 845 u_int32_t creatorid; 846 u_int8_t direction; 847#ifdef __FreeBSD__ 848 u_int8_t pad[2]; 849 u_int8_t local_flags; 850#define PFSTATE_EXPIRING 0x01 851#else 852 u_int8_t pad[3]; 853#endif 854 855 TAILQ_ENTRY(pf_state) sync_list; 856 TAILQ_ENTRY(pf_state) entry_list; 857 RB_ENTRY(pf_state) entry_id; 858 struct pf_state_peer src; 859 struct pf_state_peer dst; 860 union pf_rule_ptr rule; 861 union pf_rule_ptr anchor; 862 union pf_rule_ptr nat_rule; 863 struct pf_addr rt_addr; 864 struct pf_state_key *key[2]; /* addresses stack and wire */ 865 struct pfi_kif *kif; 866 struct pfi_kif *rt_kif; 867 struct pf_src_node *src_node; 868 struct pf_src_node *nat_src_node; 869 u_int64_t packets[2]; 870 u_int64_t bytes[2]; 871 u_int32_t creation; 872 u_int32_t expire; 873 u_int32_t pfsync_time; 874 u_int16_t tag; 875 u_int8_t log; 876 u_int8_t state_flags; 877#define PFSTATE_ALLOWOPTS 0x01 878#define PFSTATE_SLOPPY 0x02 879#define PFSTATE_PFLOW 0x04 880#define PFSTATE_NOSYNC 0x08 881#define PFSTATE_ACK 0x10 882 u_int8_t timeout; 883 u_int8_t sync_state; /* PFSYNC_S_x */ 884 885 /* XXX */ 886 u_int8_t sync_updates; 887 u_int8_t _tail[3]; 888}; 889 890/* 891 * Unified state structures for pulling states out of the kernel 892 * used by pfsync(4) and the pf(4) ioctl. 893 */ 894struct pfsync_state_scrub { 895 u_int16_t pfss_flags; 896 u_int8_t pfss_ttl; /* stashed TTL */ 897#define PFSYNC_SCRUB_FLAG_VALID 0x01 898 u_int8_t scrub_flag; 899 u_int32_t pfss_ts_mod; /* timestamp modulation */ 900} __packed; 901 902struct pfsync_state_peer { 903 struct pfsync_state_scrub scrub; /* state is scrubbed */ 904 u_int32_t seqlo; /* Max sequence number sent */ 905 u_int32_t seqhi; /* Max the other end ACKd + win */ 906 u_int32_t seqdiff; /* Sequence number modulator */ 907 u_int16_t max_win; /* largest window (pre scaling) */ 908 u_int16_t mss; /* Maximum segment size option */ 909 u_int8_t state; /* active state level */ 910 u_int8_t wscale; /* window scaling factor */ 911 u_int8_t pad[6]; 912} __packed; 913 914struct pfsync_state_key { 915 struct pf_addr addr[2]; 916 u_int16_t port[2]; 917}; 918 919struct pfsync_state { 920 u_int32_t id[2]; 921 char ifname[IFNAMSIZ]; 922 struct pfsync_state_key key[2]; 923 struct pfsync_state_peer src; 924 struct pfsync_state_peer dst; 925 struct pf_addr rt_addr; 926 u_int32_t rule; 927 u_int32_t anchor; 928 u_int32_t nat_rule; 929 u_int32_t creation; 930 u_int32_t expire; 931 u_int32_t packets[2][2]; 932 u_int32_t bytes[2][2]; 933 u_int32_t creatorid; 934 sa_family_t af; 935 u_int8_t proto; 936 u_int8_t direction; 937#ifdef __FreeBSD__ 938 u_int8_t local_flags; 939#define PFSTATE_EXPIRING 0x01 940 u_int8_t pad; 941#endif 942 u_int8_t log; 943 u_int8_t state_flags; 944 u_int8_t timeout; 945 u_int8_t sync_flags; 946 u_int8_t updates; 947} __packed; 948 949#ifdef __FreeBSD__ 950#ifdef _KERNEL 951/* pfsync */ 952typedef int pfsync_state_import_t(struct pfsync_state *, u_int8_t); 953typedef void pfsync_insert_state_t(struct pf_state *); 954typedef void pfsync_update_state_t(struct pf_state *); 955typedef void pfsync_delete_state_t(struct pf_state *); 956typedef void pfsync_clear_states_t(u_int32_t, const char *); 957typedef int pfsync_state_in_use_t(struct pf_state *); 958typedef int pfsync_defer_t(struct pf_state *, struct mbuf *); 959typedef int pfsync_up_t(void); 960 961extern pfsync_state_import_t *pfsync_state_import_ptr; 962extern pfsync_insert_state_t *pfsync_insert_state_ptr; 963extern pfsync_update_state_t *pfsync_update_state_ptr; 964extern pfsync_delete_state_t *pfsync_delete_state_ptr; 965extern pfsync_clear_states_t *pfsync_clear_states_ptr; 966extern pfsync_state_in_use_t *pfsync_state_in_use_ptr; 967extern pfsync_defer_t *pfsync_defer_ptr; 968extern pfsync_up_t *pfsync_up_ptr; 969 970void pfsync_state_export(struct pfsync_state *, 971 struct pf_state *); 972 973/* pflow */ 974typedef int export_pflow_t(struct pf_state *); 975 976extern export_pflow_t *export_pflow_ptr; 977 978/* pflog */ 979struct pf_ruleset; 980struct pf_pdesc; 981typedef int pflog_packet_t(struct pfi_kif *, struct mbuf *, sa_family_t, 982 u_int8_t, u_int8_t, struct pf_rule *, struct pf_rule *, 983 struct pf_ruleset *, struct pf_pdesc *); 984 985extern pflog_packet_t *pflog_packet_ptr; 986 987/* pf uid hack */ 988VNET_DECLARE(int, debug_pfugidhack); 989#define V_debug_pfugidhack VNET(debug_pfugidhack) 990 991#define V_pf_end_threads VNET(pf_end_threads) 992#endif 993 994/* Macros to set/clear/test flags. */ 995#ifdef _KERNEL 996#define SET(t, f) ((t) |= (f)) 997#define CLR(t, f) ((t) &= ~(f)) 998#define ISSET(t, f) ((t) & (f)) 999#endif 1000#endif 1001 1002#define PFSYNC_FLAG_SRCNODE 0x04 1003#define PFSYNC_FLAG_NATSRCNODE 0x08 1004 1005/* for copies to/from network byte order */ 1006/* ioctl interface also uses network byte order */ 1007#define pf_state_peer_hton(s,d) do { \ 1008 (d)->seqlo = htonl((s)->seqlo); \ 1009 (d)->seqhi = htonl((s)->seqhi); \ 1010 (d)->seqdiff = htonl((s)->seqdiff); \ 1011 (d)->max_win = htons((s)->max_win); \ 1012 (d)->mss = htons((s)->mss); \ 1013 (d)->state = (s)->state; \ 1014 (d)->wscale = (s)->wscale; \ 1015 if ((s)->scrub) { \ 1016 (d)->scrub.pfss_flags = \ 1017 htons((s)->scrub->pfss_flags & PFSS_TIMESTAMP); \ 1018 (d)->scrub.pfss_ttl = (s)->scrub->pfss_ttl; \ 1019 (d)->scrub.pfss_ts_mod = htonl((s)->scrub->pfss_ts_mod);\ 1020 (d)->scrub.scrub_flag = PFSYNC_SCRUB_FLAG_VALID; \ 1021 } \ 1022} while (0) 1023 1024#define pf_state_peer_ntoh(s,d) do { \ 1025 (d)->seqlo = ntohl((s)->seqlo); \ 1026 (d)->seqhi = ntohl((s)->seqhi); \ 1027 (d)->seqdiff = ntohl((s)->seqdiff); \ 1028 (d)->max_win = ntohs((s)->max_win); \ 1029 (d)->mss = ntohs((s)->mss); \ 1030 (d)->state = (s)->state; \ 1031 (d)->wscale = (s)->wscale; \ 1032 if ((s)->scrub.scrub_flag == PFSYNC_SCRUB_FLAG_VALID && \ 1033 (d)->scrub != NULL) { \ 1034 (d)->scrub->pfss_flags = \ 1035 ntohs((s)->scrub.pfss_flags) & PFSS_TIMESTAMP; \ 1036 (d)->scrub->pfss_ttl = (s)->scrub.pfss_ttl; \ 1037 (d)->scrub->pfss_ts_mod = ntohl((s)->scrub.pfss_ts_mod);\ 1038 } \ 1039} while (0) 1040 1041#define pf_state_counter_hton(s,d) do { \ 1042 d[0] = htonl((s>>32)&0xffffffff); \ 1043 d[1] = htonl(s&0xffffffff); \ 1044} while (0) 1045 1046#define pf_state_counter_from_pfsync(s) \ 1047 (((u_int64_t)(s[0])<<32) | (u_int64_t)(s[1])) 1048 1049#define pf_state_counter_ntoh(s,d) do { \ 1050 d = ntohl(s[0]); \ 1051 d = d<<32; \ 1052 d += ntohl(s[1]); \ 1053} while (0) 1054 1055TAILQ_HEAD(pf_rulequeue, pf_rule); 1056 1057struct pf_anchor; 1058 1059struct pf_ruleset { 1060 struct { 1061 struct pf_rulequeue queues[2]; 1062 struct { 1063 struct pf_rulequeue *ptr; 1064 struct pf_rule **ptr_array; 1065 u_int32_t rcount; 1066 u_int32_t ticket; 1067 int open; 1068 } active, inactive; 1069 } rules[PF_RULESET_MAX]; 1070 struct pf_anchor *anchor; 1071 u_int32_t tticket; 1072 int tables; 1073 int topen; 1074}; 1075 1076RB_HEAD(pf_anchor_global, pf_anchor); 1077RB_HEAD(pf_anchor_node, pf_anchor); 1078struct pf_anchor { 1079 RB_ENTRY(pf_anchor) entry_global; 1080 RB_ENTRY(pf_anchor) entry_node; 1081 struct pf_anchor *parent; 1082 struct pf_anchor_node children; 1083 char name[PF_ANCHOR_NAME_SIZE]; 1084 char path[MAXPATHLEN]; 1085 struct pf_ruleset ruleset; 1086 int refcnt; /* anchor rules */ 1087 int match; 1088}; 1089RB_PROTOTYPE(pf_anchor_global, pf_anchor, entry_global, pf_anchor_compare); 1090RB_PROTOTYPE(pf_anchor_node, pf_anchor, entry_node, pf_anchor_compare); 1091 1092#define PF_RESERVED_ANCHOR "_pf" 1093 1094#define PFR_TFLAG_PERSIST 0x00000001 1095#define PFR_TFLAG_CONST 0x00000002 1096#define PFR_TFLAG_ACTIVE 0x00000004 1097#define PFR_TFLAG_INACTIVE 0x00000008 1098#define PFR_TFLAG_REFERENCED 0x00000010 1099#define PFR_TFLAG_REFDANCHOR 0x00000020 1100#define PFR_TFLAG_COUNTERS 0x00000040 1101/* Adjust masks below when adding flags. */ 1102#define PFR_TFLAG_USRMASK 0x00000043 1103#define PFR_TFLAG_SETMASK 0x0000003C 1104#define PFR_TFLAG_ALLMASK 0x0000007F 1105 1106struct pfr_table { 1107 char pfrt_anchor[MAXPATHLEN]; 1108 char pfrt_name[PF_TABLE_NAME_SIZE]; 1109 u_int32_t pfrt_flags; 1110 u_int8_t pfrt_fback; 1111}; 1112 1113enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED, 1114 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE, 1115 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_NOCOUNT, PFR_FB_MAX }; 1116 1117struct pfr_addr { 1118 union { 1119 struct in_addr _pfra_ip4addr; 1120 struct in6_addr _pfra_ip6addr; 1121 } pfra_u; 1122 u_int8_t pfra_af; 1123 u_int8_t pfra_net; 1124 u_int8_t pfra_not; 1125 u_int8_t pfra_fback; 1126}; 1127#define pfra_ip4addr pfra_u._pfra_ip4addr 1128#define pfra_ip6addr pfra_u._pfra_ip6addr 1129 1130enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX }; 1131enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX }; 1132#define PFR_OP_XPASS PFR_OP_ADDR_MAX 1133 1134struct pfr_astats { 1135 struct pfr_addr pfras_a; 1136 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1137 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1138 long pfras_tzero; 1139}; 1140 1141enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX }; 1142 1143struct pfr_tstats { 1144 struct pfr_table pfrts_t; 1145 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1146 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1147 u_int64_t pfrts_match; 1148 u_int64_t pfrts_nomatch; 1149 long pfrts_tzero; 1150 int pfrts_cnt; 1151 int pfrts_refcnt[PFR_REFCNT_MAX]; 1152}; 1153#define pfrts_name pfrts_t.pfrt_name 1154#define pfrts_flags pfrts_t.pfrt_flags 1155 1156#ifndef _SOCKADDR_UNION_DEFINED 1157#define _SOCKADDR_UNION_DEFINED 1158union sockaddr_union { 1159 struct sockaddr sa; 1160 struct sockaddr_in sin; 1161 struct sockaddr_in6 sin6; 1162}; 1163#endif /* _SOCKADDR_UNION_DEFINED */ 1164 1165struct pfr_kcounters { 1166 u_int64_t pfrkc_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1167 u_int64_t pfrkc_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1168}; 1169 1170SLIST_HEAD(pfr_kentryworkq, pfr_kentry); 1171struct pfr_kentry { 1172 struct radix_node pfrke_node[2]; 1173 union sockaddr_union pfrke_sa; 1174 SLIST_ENTRY(pfr_kentry) pfrke_workq; 1175 union { 1176 1177 struct pfr_kcounters *pfrke_counters; 1178#if 0 1179 struct pfr_kroute *pfrke_route; 1180#endif 1181 } u; 1182 long pfrke_tzero; 1183 u_int8_t pfrke_af; 1184 u_int8_t pfrke_net; 1185 u_int8_t pfrke_not; 1186 u_int8_t pfrke_mark; 1187}; 1188#define pfrke_counters u.pfrke_counters 1189#define pfrke_route u.pfrke_route 1190 1191 1192SLIST_HEAD(pfr_ktableworkq, pfr_ktable); 1193RB_HEAD(pfr_ktablehead, pfr_ktable); 1194struct pfr_ktable { 1195 struct pfr_tstats pfrkt_ts; 1196 RB_ENTRY(pfr_ktable) pfrkt_tree; 1197 SLIST_ENTRY(pfr_ktable) pfrkt_workq; 1198 struct radix_node_head *pfrkt_ip4; 1199 struct radix_node_head *pfrkt_ip6; 1200 struct pfr_ktable *pfrkt_shadow; 1201 struct pfr_ktable *pfrkt_root; 1202 struct pf_ruleset *pfrkt_rs; 1203 long pfrkt_larg; 1204 int pfrkt_nflags; 1205}; 1206#define pfrkt_t pfrkt_ts.pfrts_t 1207#define pfrkt_name pfrkt_t.pfrt_name 1208#define pfrkt_anchor pfrkt_t.pfrt_anchor 1209#define pfrkt_ruleset pfrkt_t.pfrt_ruleset 1210#define pfrkt_flags pfrkt_t.pfrt_flags 1211#define pfrkt_cnt pfrkt_ts.pfrts_cnt 1212#define pfrkt_refcnt pfrkt_ts.pfrts_refcnt 1213#define pfrkt_packets pfrkt_ts.pfrts_packets 1214#define pfrkt_bytes pfrkt_ts.pfrts_bytes 1215#define pfrkt_match pfrkt_ts.pfrts_match 1216#define pfrkt_nomatch pfrkt_ts.pfrts_nomatch 1217#define pfrkt_tzero pfrkt_ts.pfrts_tzero 1218 1219RB_HEAD(pf_state_tree, pf_state_key); 1220RB_PROTOTYPE(pf_state_tree, pf_state_key, entry, pf_state_compare_key); 1221 1222RB_HEAD(pf_state_tree_ext_gwy, pf_state_key); 1223RB_PROTOTYPE(pf_state_tree_ext_gwy, pf_state_key, 1224 entry_ext_gwy, pf_state_compare_ext_gwy); 1225 1226RB_HEAD(pfi_ifhead, pfi_kif); 1227 1228/* state tables */ 1229#ifdef __FreeBSD__ 1230#ifdef _KERNEL 1231VNET_DECLARE(struct pf_state_tree, pf_statetbl); 1232#define V_pf_statetbl VNET(pf_statetbl) 1233#endif 1234#else 1235extern struct pf_state_tree pf_statetbl; 1236#endif 1237 1238/* keep synced with pfi_kif, used in RB_FIND */ 1239struct pfi_kif_cmp { 1240 char pfik_name[IFNAMSIZ]; 1241}; 1242 1243struct pfi_kif { 1244 char pfik_name[IFNAMSIZ]; 1245 RB_ENTRY(pfi_kif) pfik_tree; 1246 u_int64_t pfik_packets[2][2][2]; 1247 u_int64_t pfik_bytes[2][2][2]; 1248 u_int32_t pfik_tzero; 1249 int pfik_flags; 1250 void *pfik_ah_cookie; 1251 struct ifnet *pfik_ifp; 1252 struct ifg_group *pfik_group; 1253 int pfik_states; 1254 int pfik_rules; 1255 TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs; 1256}; 1257 1258enum pfi_kif_refs { 1259 PFI_KIF_REF_NONE, 1260 PFI_KIF_REF_STATE, 1261 PFI_KIF_REF_RULE 1262}; 1263 1264#define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */ 1265 1266struct pf_pdesc { 1267 struct { 1268 int done; 1269 uid_t uid; 1270 gid_t gid; 1271 pid_t pid; 1272 } lookup; 1273 u_int64_t tot_len; /* Make Mickey money */ 1274 union { 1275 struct tcphdr *tcp; 1276 struct udphdr *udp; 1277 struct icmp *icmp; 1278#ifdef INET6 1279 struct icmp6_hdr *icmp6; 1280#endif /* INET6 */ 1281 void *any; 1282 } hdr; 1283 1284 struct pf_rule *nat_rule; /* nat/rdr rule applied to packet */ 1285 struct ether_header 1286 *eh; 1287 struct pf_addr *src; /* src address */ 1288 struct pf_addr *dst; /* dst address */ 1289 u_int16_t *sport; 1290 u_int16_t *dport; 1291#ifdef __FreeBSD__ 1292 struct pf_mtag *pf_mtag; 1293#endif 1294 1295 u_int32_t p_len; /* total length of payload */ 1296 1297 u_int16_t *ip_sum; 1298 u_int16_t *proto_sum; 1299 u_int16_t flags; /* Let SCRUB trigger behavior in 1300 * state code. Easier than tags */ 1301#define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */ 1302#define PFDESC_IP_REAS 0x0002 /* IP frags would've been reassembled */ 1303 sa_family_t af; 1304 u_int8_t proto; 1305 u_int8_t tos; 1306 u_int8_t dir; /* direction */ 1307 u_int8_t sidx; /* key index for source */ 1308 u_int8_t didx; /* key index for destination */ 1309}; 1310 1311/* flags for RDR options */ 1312#define PF_DPORT_RANGE 0x01 /* Dest port uses range */ 1313#define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */ 1314 1315/* Reasons code for passing/dropping a packet */ 1316#define PFRES_MATCH 0 /* Explicit match of a rule */ 1317#define PFRES_BADOFF 1 /* Bad offset for pull_hdr */ 1318#define PFRES_FRAG 2 /* Dropping following fragment */ 1319#define PFRES_SHORT 3 /* Dropping short packet */ 1320#define PFRES_NORM 4 /* Dropping by normalizer */ 1321#define PFRES_MEMORY 5 /* Dropped due to lacking mem */ 1322#define PFRES_TS 6 /* Bad TCP Timestamp (RFC1323) */ 1323#define PFRES_CONGEST 7 /* Congestion (of ipintrq) */ 1324#define PFRES_IPOPTIONS 8 /* IP option */ 1325#define PFRES_PROTCKSUM 9 /* Protocol checksum invalid */ 1326#define PFRES_BADSTATE 10 /* State mismatch */ 1327#define PFRES_STATEINS 11 /* State insertion failure */ 1328#define PFRES_MAXSTATES 12 /* State limit */ 1329#define PFRES_SRCLIMIT 13 /* Source node/conn limit */ 1330#define PFRES_SYNPROXY 14 /* SYN proxy */ 1331#define PFRES_MAX 15 /* total+1 */ 1332 1333#define PFRES_NAMES { \ 1334 "match", \ 1335 "bad-offset", \ 1336 "fragment", \ 1337 "short", \ 1338 "normalize", \ 1339 "memory", \ 1340 "bad-timestamp", \ 1341 "congestion", \ 1342 "ip-option", \ 1343 "proto-cksum", \ 1344 "state-mismatch", \ 1345 "state-insert", \ 1346 "state-limit", \ 1347 "src-limit", \ 1348 "synproxy", \ 1349 NULL \ 1350} 1351 1352/* Counters for other things we want to keep track of */ 1353#define LCNT_STATES 0 /* states */ 1354#define LCNT_SRCSTATES 1 /* max-src-states */ 1355#define LCNT_SRCNODES 2 /* max-src-nodes */ 1356#define LCNT_SRCCONN 3 /* max-src-conn */ 1357#define LCNT_SRCCONNRATE 4 /* max-src-conn-rate */ 1358#define LCNT_OVERLOAD_TABLE 5 /* entry added to overload table */ 1359#define LCNT_OVERLOAD_FLUSH 6 /* state entries flushed */ 1360#define LCNT_MAX 7 /* total+1 */ 1361 1362#define LCNT_NAMES { \ 1363 "max states per rule", \ 1364 "max-src-states", \ 1365 "max-src-nodes", \ 1366 "max-src-conn", \ 1367 "max-src-conn-rate", \ 1368 "overload table insertion", \ 1369 "overload flush states", \ 1370 NULL \ 1371} 1372 1373/* UDP state enumeration */ 1374#define PFUDPS_NO_TRAFFIC 0 1375#define PFUDPS_SINGLE 1 1376#define PFUDPS_MULTIPLE 2 1377 1378#define PFUDPS_NSTATES 3 /* number of state levels */ 1379 1380#define PFUDPS_NAMES { \ 1381 "NO_TRAFFIC", \ 1382 "SINGLE", \ 1383 "MULTIPLE", \ 1384 NULL \ 1385} 1386 1387/* Other protocol state enumeration */ 1388#define PFOTHERS_NO_TRAFFIC 0 1389#define PFOTHERS_SINGLE 1 1390#define PFOTHERS_MULTIPLE 2 1391 1392#define PFOTHERS_NSTATES 3 /* number of state levels */ 1393 1394#define PFOTHERS_NAMES { \ 1395 "NO_TRAFFIC", \ 1396 "SINGLE", \ 1397 "MULTIPLE", \ 1398 NULL \ 1399} 1400 1401#define FCNT_STATE_SEARCH 0 1402#define FCNT_STATE_INSERT 1 1403#define FCNT_STATE_REMOVALS 2 1404#define FCNT_MAX 3 1405 1406#define SCNT_SRC_NODE_SEARCH 0 1407#define SCNT_SRC_NODE_INSERT 1 1408#define SCNT_SRC_NODE_REMOVALS 2 1409#define SCNT_MAX 3 1410 1411#define ACTION_SET(a, x) \ 1412 do { \ 1413 if ((a) != NULL) \ 1414 *(a) = (x); \ 1415 } while (0) 1416 1417#ifdef __FreeBSD__ 1418#define REASON_SET(a, x) \ 1419 do { \ 1420 if ((a) != NULL) \ 1421 *(a) = (x); \ 1422 if (x < PFRES_MAX) \ 1423 V_pf_status.counters[x]++; \ 1424 } while (0) 1425#else 1426#define REASON_SET(a, x) \ 1427 do { \ 1428 if ((a) != NULL) \ 1429 *(a) = (x); \ 1430 if (x < PFRES_MAX) \ 1431 pf_status.counters[x]++; \ 1432 } while (0) 1433#endif 1434 1435struct pf_status { 1436 u_int64_t counters[PFRES_MAX]; 1437 u_int64_t lcounters[LCNT_MAX]; /* limit counters */ 1438 u_int64_t fcounters[FCNT_MAX]; 1439 u_int64_t scounters[SCNT_MAX]; 1440 u_int64_t pcounters[2][2][3]; 1441 u_int64_t bcounters[2][2]; 1442 u_int64_t stateid; 1443 u_int32_t running; 1444 u_int32_t states; 1445 u_int32_t src_nodes; 1446 u_int32_t since; 1447 u_int32_t debug; 1448 u_int32_t hostid; 1449 char ifname[IFNAMSIZ]; 1450 u_int8_t pf_chksum[PF_MD5_DIGEST_LENGTH]; 1451}; 1452 1453struct cbq_opts { 1454 u_int minburst; 1455 u_int maxburst; 1456 u_int pktsize; 1457 u_int maxpktsize; 1458 u_int ns_per_byte; 1459 u_int maxidle; 1460 int minidle; 1461 u_int offtime; 1462 int flags; 1463}; 1464 1465struct priq_opts { 1466 int flags; 1467}; 1468 1469struct hfsc_opts { 1470 /* real-time service curve */ 1471 u_int rtsc_m1; /* slope of the 1st segment in bps */ 1472 u_int rtsc_d; /* the x-projection of m1 in msec */ 1473 u_int rtsc_m2; /* slope of the 2nd segment in bps */ 1474 /* link-sharing service curve */ 1475 u_int lssc_m1; 1476 u_int lssc_d; 1477 u_int lssc_m2; 1478 /* upper-limit service curve */ 1479 u_int ulsc_m1; 1480 u_int ulsc_d; 1481 u_int ulsc_m2; 1482 int flags; 1483}; 1484 1485struct pf_altq { 1486 char ifname[IFNAMSIZ]; 1487 1488 void *altq_disc; /* discipline-specific state */ 1489 TAILQ_ENTRY(pf_altq) entries; 1490 1491 /* scheduler spec */ 1492 u_int8_t scheduler; /* scheduler type */ 1493 u_int16_t tbrsize; /* tokenbucket regulator size */ 1494 u_int32_t ifbandwidth; /* interface bandwidth */ 1495 1496 /* queue spec */ 1497 char qname[PF_QNAME_SIZE]; /* queue name */ 1498 char parent[PF_QNAME_SIZE]; /* parent name */ 1499 u_int32_t parent_qid; /* parent queue id */ 1500 u_int32_t bandwidth; /* queue bandwidth */ 1501 u_int8_t priority; /* priority */ 1502#ifdef __FreeBSD__ 1503 u_int8_t local_flags; /* dynamic interface */ 1504#define PFALTQ_FLAG_IF_REMOVED 0x01 1505#endif 1506 u_int16_t qlimit; /* queue size limit */ 1507 u_int16_t flags; /* misc flags */ 1508 union { 1509 struct cbq_opts cbq_opts; 1510 struct priq_opts priq_opts; 1511 struct hfsc_opts hfsc_opts; 1512 } pq_u; 1513 1514 u_int32_t qid; /* return value */ 1515}; 1516 1517struct pf_tagname { 1518 TAILQ_ENTRY(pf_tagname) entries; 1519 char name[PF_TAG_NAME_SIZE]; 1520 u_int16_t tag; 1521 int ref; 1522}; 1523 1524struct pf_divert { 1525 union { 1526 struct in_addr ipv4; 1527 struct in6_addr ipv6; 1528 } addr; 1529 u_int16_t port; 1530}; 1531 1532#define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */ 1533#define PFFRAG_FRAG_HIWAT 1000 /* Number of fragmented packets */ 1534#define PFFRAG_FRCENT_HIWAT 50000 /* Number of fragment cache entries */ 1535#define PFFRAG_FRCACHE_HIWAT 10000 /* Number of fragment descriptors */ 1536 1537#define PFR_KTABLE_HIWAT 1000 /* Number of tables */ 1538#define PFR_KENTRY_HIWAT 200000 /* Number of table entries */ 1539#define PFR_KENTRY_HIWAT_SMALL 100000 /* Number of table entries (tiny hosts) */ 1540 1541/* 1542 * ioctl parameter structures 1543 */ 1544 1545struct pfioc_pooladdr { 1546 u_int32_t action; 1547 u_int32_t ticket; 1548 u_int32_t nr; 1549 u_int32_t r_num; 1550 u_int8_t r_action; 1551 u_int8_t r_last; 1552 u_int8_t af; 1553 char anchor[MAXPATHLEN]; 1554 struct pf_pooladdr addr; 1555}; 1556 1557struct pfioc_rule { 1558 u_int32_t action; 1559 u_int32_t ticket; 1560 u_int32_t pool_ticket; 1561 u_int32_t nr; 1562 char anchor[MAXPATHLEN]; 1563 char anchor_call[MAXPATHLEN]; 1564 struct pf_rule rule; 1565}; 1566 1567struct pfioc_natlook { 1568 struct pf_addr saddr; 1569 struct pf_addr daddr; 1570 struct pf_addr rsaddr; 1571 struct pf_addr rdaddr; 1572 u_int16_t sport; 1573 u_int16_t dport; 1574 u_int16_t rsport; 1575 u_int16_t rdport; 1576 sa_family_t af; 1577 u_int8_t proto; 1578 u_int8_t direction; 1579}; 1580 1581struct pfioc_state { 1582 struct pfsync_state state; 1583}; 1584 1585struct pfioc_src_node_kill { 1586 sa_family_t psnk_af; 1587 struct pf_rule_addr psnk_src; 1588 struct pf_rule_addr psnk_dst; 1589 u_int psnk_killed; 1590}; 1591 1592struct pfioc_state_kill { 1593 struct pf_state_cmp psk_pfcmp; 1594 sa_family_t psk_af; 1595 int psk_proto; 1596 struct pf_rule_addr psk_src; 1597 struct pf_rule_addr psk_dst; 1598 char psk_ifname[IFNAMSIZ]; 1599 char psk_label[PF_RULE_LABEL_SIZE]; 1600 u_int psk_killed; 1601}; 1602 1603struct pfioc_states { 1604 int ps_len; 1605 union { 1606 caddr_t psu_buf; 1607 struct pfsync_state *psu_states; 1608 } ps_u; 1609#define ps_buf ps_u.psu_buf 1610#define ps_states ps_u.psu_states 1611}; 1612 1613struct pfioc_src_nodes { 1614 int psn_len; 1615 union { 1616 caddr_t psu_buf; 1617 struct pf_src_node *psu_src_nodes; 1618 } psn_u; 1619#define psn_buf psn_u.psu_buf 1620#define psn_src_nodes psn_u.psu_src_nodes 1621}; 1622 1623struct pfioc_if { 1624 char ifname[IFNAMSIZ]; 1625}; 1626 1627struct pfioc_tm { 1628 int timeout; 1629 int seconds; 1630}; 1631 1632struct pfioc_limit { 1633 int index; 1634 unsigned limit; 1635}; 1636 1637struct pfioc_altq { 1638 u_int32_t action; 1639 u_int32_t ticket; 1640 u_int32_t nr; 1641 struct pf_altq altq; 1642}; 1643 1644struct pfioc_qstats { 1645 u_int32_t ticket; 1646 u_int32_t nr; 1647 void *buf; 1648 int nbytes; 1649 u_int8_t scheduler; 1650}; 1651 1652struct pfioc_ruleset { 1653 u_int32_t nr; 1654 char path[MAXPATHLEN]; 1655 char name[PF_ANCHOR_NAME_SIZE]; 1656}; 1657 1658#define PF_RULESET_ALTQ (PF_RULESET_MAX) 1659#define PF_RULESET_TABLE (PF_RULESET_MAX+1) 1660struct pfioc_trans { 1661 int size; /* number of elements */ 1662 int esize; /* size of each element in bytes */ 1663 struct pfioc_trans_e { 1664 int rs_num; 1665 char anchor[MAXPATHLEN]; 1666 u_int32_t ticket; 1667 } *array; 1668}; 1669 1670#define PFR_FLAG_ATOMIC 0x00000001 1671#define PFR_FLAG_DUMMY 0x00000002 1672#define PFR_FLAG_FEEDBACK 0x00000004 1673#define PFR_FLAG_CLSTATS 0x00000008 1674#define PFR_FLAG_ADDRSTOO 0x00000010 1675#define PFR_FLAG_REPLACE 0x00000020 1676#define PFR_FLAG_ALLRSETS 0x00000040 1677#define PFR_FLAG_ALLMASK 0x0000007F 1678#ifdef _KERNEL 1679#define PFR_FLAG_USERIOCTL 0x10000000 1680#endif 1681 1682struct pfioc_table { 1683 struct pfr_table pfrio_table; 1684 void *pfrio_buffer; 1685 int pfrio_esize; 1686 int pfrio_size; 1687 int pfrio_size2; 1688 int pfrio_nadd; 1689 int pfrio_ndel; 1690 int pfrio_nchange; 1691 int pfrio_flags; 1692 u_int32_t pfrio_ticket; 1693}; 1694#define pfrio_exists pfrio_nadd 1695#define pfrio_nzero pfrio_nadd 1696#define pfrio_nmatch pfrio_nadd 1697#define pfrio_naddr pfrio_size2 1698#define pfrio_setflag pfrio_size2 1699#define pfrio_clrflag pfrio_nadd 1700 1701struct pfioc_iface { 1702 char pfiio_name[IFNAMSIZ]; 1703 void *pfiio_buffer; 1704 int pfiio_esize; 1705 int pfiio_size; 1706 int pfiio_nzero; 1707 int pfiio_flags; 1708}; 1709 1710 1711/* 1712 * ioctl operations 1713 */ 1714 1715#define DIOCSTART _IO ('D', 1) 1716#define DIOCSTOP _IO ('D', 2) 1717#define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule) 1718#define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule) 1719#define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule) 1720/* XXX cut 8 - 17 */ 1721#define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill) 1722#define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state) 1723#define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if) 1724#define DIOCGETSTATUS _IOWR('D', 21, struct pf_status) 1725#define DIOCCLRSTATUS _IO ('D', 22) 1726#define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook) 1727#define DIOCSETDEBUG _IOWR('D', 24, u_int32_t) 1728#define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states) 1729#define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule) 1730/* XXX cut 26 - 28 */ 1731#define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm) 1732#define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm) 1733#define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state) 1734#define DIOCCLRRULECTRS _IO ('D', 38) 1735#define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit) 1736#define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit) 1737#define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill) 1738#define DIOCSTARTALTQ _IO ('D', 42) 1739#define DIOCSTOPALTQ _IO ('D', 43) 1740#define DIOCADDALTQ _IOWR('D', 45, struct pfioc_altq) 1741#define DIOCGETALTQS _IOWR('D', 47, struct pfioc_altq) 1742#define DIOCGETALTQ _IOWR('D', 48, struct pfioc_altq) 1743#define DIOCCHANGEALTQ _IOWR('D', 49, struct pfioc_altq) 1744#define DIOCGETQSTATS _IOWR('D', 50, struct pfioc_qstats) 1745#define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr) 1746#define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr) 1747#define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr) 1748#define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr) 1749#define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr) 1750/* XXX cut 55 - 57 */ 1751#define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset) 1752#define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset) 1753#define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table) 1754#define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table) 1755#define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table) 1756#define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table) 1757#define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table) 1758#define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table) 1759#define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table) 1760#define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table) 1761#define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table) 1762#define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table) 1763#define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table) 1764#define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table) 1765#define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table) 1766#define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table) 1767#define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table) 1768#define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table) 1769#define DIOCOSFPFLUSH _IO('D', 78) 1770#define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl) 1771#define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl) 1772#define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans) 1773#define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans) 1774#define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans) 1775#define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes) 1776#define DIOCCLRSRCNODES _IO('D', 85) 1777#define DIOCSETHOSTID _IOWR('D', 86, u_int32_t) 1778#define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface) 1779#define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface) 1780#define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface) 1781#define DIOCKILLSRCNODES _IOWR('D', 91, struct pfioc_src_node_kill) 1782#ifdef __FreeBSD__ 1783struct pf_ifspeed { 1784 char ifname[IFNAMSIZ]; 1785 u_int32_t baudrate; 1786}; 1787#define DIOCGIFSPEED _IOWR('D', 92, struct pf_ifspeed) 1788#endif 1789 1790#ifdef _KERNEL 1791RB_HEAD(pf_src_tree, pf_src_node); 1792RB_PROTOTYPE(pf_src_tree, pf_src_node, entry, pf_src_compare); 1793#ifdef __FreeBSD__ 1794VNET_DECLARE(struct pf_src_tree, tree_src_tracking); 1795#define V_tree_src_tracking VNET(tree_src_tracking) 1796#else 1797extern struct pf_src_tree tree_src_tracking; 1798#endif 1799 1800RB_HEAD(pf_state_tree_id, pf_state); 1801RB_PROTOTYPE(pf_state_tree_id, pf_state, 1802 entry_id, pf_state_compare_id); 1803#ifdef __FreeBSD__ 1804VNET_DECLARE(struct pf_state_tree_id, tree_id); 1805#define V_tree_id VNET(tree_id) 1806VNET_DECLARE(struct pf_state_queue, state_list); 1807#define V_state_list VNET(state_list) 1808#else 1809extern struct pf_state_tree_id tree_id; 1810extern struct pf_state_queue state_list; 1811#endif 1812 1813TAILQ_HEAD(pf_poolqueue, pf_pool); 1814#ifdef __FreeBSD__ 1815VNET_DECLARE(struct pf_poolqueue, pf_pools[2]); 1816#define V_pf_pools VNET(pf_pools) 1817#else 1818extern struct pf_poolqueue pf_pools[2]; 1819#endif 1820TAILQ_HEAD(pf_altqqueue, pf_altq); 1821#ifdef __FreeBSD__ 1822VNET_DECLARE(struct pf_altqqueue, pf_altqs[2]); 1823#define V_pf_altqs VNET(pf_altqs) 1824VNET_DECLARE(struct pf_palist, pf_pabuf); 1825#define V_pf_pabuf VNET(pf_pabuf) 1826#else 1827extern struct pf_altqqueue pf_altqs[2]; 1828extern struct pf_palist pf_pabuf; 1829#endif 1830 1831#ifdef __FreeBSD__ 1832VNET_DECLARE(u_int32_t, ticket_altqs_active); 1833#define V_ticket_altqs_active VNET(ticket_altqs_active) 1834VNET_DECLARE(u_int32_t, ticket_altqs_inactive); 1835#define V_ticket_altqs_inactive VNET(ticket_altqs_inactive) 1836VNET_DECLARE(int, altqs_inactive_open); 1837#define V_altqs_inactive_open VNET(altqs_inactive_open) 1838VNET_DECLARE(u_int32_t, ticket_pabuf); 1839#define V_ticket_pabuf VNET(ticket_pabuf) 1840VNET_DECLARE(struct pf_altqqueue *, pf_altqs_active); 1841#define V_pf_altqs_active VNET(pf_altqs_active) 1842VNET_DECLARE(struct pf_altqqueue *, pf_altqs_inactive); 1843#define V_pf_altqs_inactive VNET(pf_altqs_inactive) 1844VNET_DECLARE(struct pf_poolqueue *, pf_pools_active); 1845#define V_pf_pools_active VNET(pf_pools_active) 1846VNET_DECLARE(struct pf_poolqueue *, pf_pools_inactive); 1847#define V_pf_pools_inactive VNET(pf_pools_inactive) 1848#else 1849extern u_int32_t ticket_altqs_active; 1850extern u_int32_t ticket_altqs_inactive; 1851extern int altqs_inactive_open; 1852extern u_int32_t ticket_pabuf; 1853extern struct pf_altqqueue *pf_altqs_active; 1854extern struct pf_altqqueue *pf_altqs_inactive; 1855extern struct pf_poolqueue *pf_pools_active; 1856extern struct pf_poolqueue *pf_pools_inactive; 1857#endif 1858extern int pf_tbladdr_setup(struct pf_ruleset *, 1859 struct pf_addr_wrap *); 1860extern void pf_tbladdr_remove(struct pf_addr_wrap *); 1861extern void pf_tbladdr_copyout(struct pf_addr_wrap *); 1862extern void pf_calc_skip_steps(struct pf_rulequeue *); 1863#ifdef __FreeBSD__ 1864#ifdef ALTQ 1865extern void pf_altq_ifnet_event(struct ifnet *, int); 1866#endif 1867VNET_DECLARE(uma_zone_t, pf_src_tree_pl); 1868#define V_pf_src_tree_pl VNET(pf_src_tree_pl) 1869VNET_DECLARE(uma_zone_t, pf_rule_pl); 1870#define V_pf_rule_pl VNET(pf_rule_pl) 1871VNET_DECLARE(uma_zone_t, pf_state_pl); 1872#define V_pf_state_pl VNET(pf_state_pl) 1873VNET_DECLARE(uma_zone_t, pf_state_key_pl); 1874#define V_pf_state_key_pl VNET(pf_state_key_pl) 1875VNET_DECLARE(uma_zone_t, pf_state_item_pl); 1876#define V_pf_state_item_pl VNET(pf_state_item_pl) 1877VNET_DECLARE(uma_zone_t, pf_altq_pl); 1878#define V_pf_altq_pl VNET(pf_altq_pl) 1879VNET_DECLARE(uma_zone_t, pf_pooladdr_pl); 1880#define V_pf_pooladdr_pl VNET(pf_pooladdr_pl) 1881VNET_DECLARE(uma_zone_t, pfr_ktable_pl); 1882#define V_pfr_ktable_pl VNET(pfr_ktable_pl) 1883VNET_DECLARE(uma_zone_t, pfr_kentry_pl); 1884#define V_pfr_kentry_pl VNET(pfr_kentry_pl) 1885VNET_DECLARE(uma_zone_t, pf_cache_pl); 1886#define V_pf_cache_pl VNET(pf_cache_pl) 1887VNET_DECLARE(uma_zone_t, pf_cent_pl); 1888#define V_pf_cent_pl VNET(pf_cent_pl) 1889VNET_DECLARE(uma_zone_t, pf_state_scrub_pl); 1890#define V_pf_state_scrub_pl VNET(pf_state_scrub_pl) 1891VNET_DECLARE(uma_zone_t, pfi_addr_pl); 1892#define V_pfi_addr_pl VNET(pfi_addr_pl) 1893#else 1894extern struct pool pf_src_tree_pl, pf_rule_pl; 1895extern struct pool pf_state_pl, pf_state_key_pl, pf_state_item_pl, 1896 pf_altq_pl, pf_pooladdr_pl; 1897extern struct pool pf_state_scrub_pl; 1898#endif 1899extern void pf_purge_thread(void *); 1900#ifdef __FreeBSD__ 1901extern int pf_purge_expired_src_nodes(int); 1902extern int pf_purge_expired_states(u_int32_t , int); 1903#else 1904extern void pf_purge_expired_src_nodes(int); 1905extern void pf_purge_expired_states(u_int32_t); 1906#endif 1907extern void pf_unlink_state(struct pf_state *); 1908extern void pf_free_state(struct pf_state *); 1909extern int pf_state_insert(struct pfi_kif *, 1910 struct pf_state_key *, 1911 struct pf_state_key *, 1912 struct pf_state *); 1913extern int pf_insert_src_node(struct pf_src_node **, 1914 struct pf_rule *, struct pf_addr *, 1915 sa_family_t); 1916void pf_src_tree_remove_state(struct pf_state *); 1917extern struct pf_state *pf_find_state_byid(struct pf_state_cmp *); 1918extern struct pf_state *pf_find_state_all(struct pf_state_key_cmp *, 1919 u_int, int *); 1920extern void pf_print_state(struct pf_state *); 1921extern void pf_print_flags(u_int8_t); 1922extern u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t, 1923 u_int8_t); 1924 1925#ifdef __FreeBSD__ 1926VNET_DECLARE(struct ifnet *, sync_ifp); 1927#define V_sync_ifp VNET(sync_ifp); 1928VNET_DECLARE(struct pf_rule, pf_default_rule); 1929#define V_pf_default_rule VNET(pf_default_rule) 1930#else 1931extern struct ifnet *sync_ifp; 1932extern struct pf_rule pf_default_rule; 1933#endif 1934extern void pf_addrcpy(struct pf_addr *, struct pf_addr *, 1935 u_int8_t); 1936void pf_rm_rule(struct pf_rulequeue *, 1937 struct pf_rule *); 1938#ifndef __FreeBSD__ 1939struct pf_divert *pf_find_divert(struct mbuf *); 1940#endif 1941 1942#ifdef INET 1943#ifdef __FreeBSD__ 1944int pf_test(int, struct ifnet *, struct mbuf **, struct ether_header *, 1945 struct inpcb *); 1946#else 1947int pf_test(int, struct ifnet *, struct mbuf **, struct ether_header *); 1948#endif 1949#endif /* INET */ 1950 1951#ifdef INET6 1952#ifdef __FreeBSD__ 1953int pf_test6(int, struct ifnet *, struct mbuf **, struct ether_header *, 1954 struct inpcb *); 1955#else 1956int pf_test6(int, struct ifnet *, struct mbuf **, struct ether_header *); 1957#endif 1958void pf_poolmask(struct pf_addr *, struct pf_addr*, 1959 struct pf_addr *, struct pf_addr *, u_int8_t); 1960void pf_addr_inc(struct pf_addr *, sa_family_t); 1961#endif /* INET6 */ 1962 1963#ifdef __FreeBSD__ 1964u_int32_t pf_new_isn(struct pf_state *); 1965#endif 1966void *pf_pull_hdr(struct mbuf *, int, void *, int, u_short *, u_short *, 1967 sa_family_t); 1968void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t); 1969int pflog_packet(struct pfi_kif *, struct mbuf *, sa_family_t, u_int8_t, 1970 u_int8_t, struct pf_rule *, struct pf_rule *, struct pf_ruleset *, 1971 struct pf_pdesc *); 1972void pf_send_deferred_syn(struct pf_state *); 1973int pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *, 1974 struct pf_addr *, sa_family_t); 1975int pf_match_addr_range(struct pf_addr *, struct pf_addr *, 1976 struct pf_addr *, sa_family_t); 1977int pf_match(u_int8_t, u_int32_t, u_int32_t, u_int32_t); 1978int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t); 1979int pf_match_uid(u_int8_t, uid_t, uid_t, uid_t); 1980int pf_match_gid(u_int8_t, gid_t, gid_t, gid_t); 1981 1982void pf_normalize_init(void); 1983int pf_normalize_ip(struct mbuf **, int, struct pfi_kif *, u_short *, 1984 struct pf_pdesc *); 1985int pf_normalize_ip6(struct mbuf **, int, struct pfi_kif *, u_short *, 1986 struct pf_pdesc *); 1987int pf_normalize_tcp(int, struct pfi_kif *, struct mbuf *, int, int, void *, 1988 struct pf_pdesc *); 1989void pf_normalize_tcp_cleanup(struct pf_state *); 1990int pf_normalize_tcp_init(struct mbuf *, int, struct pf_pdesc *, 1991 struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *); 1992int pf_normalize_tcp_stateful(struct mbuf *, int, struct pf_pdesc *, 1993 u_short *, struct tcphdr *, struct pf_state *, 1994 struct pf_state_peer *, struct pf_state_peer *, int *); 1995u_int32_t 1996 pf_state_expires(const struct pf_state *); 1997void pf_purge_expired_fragments(void); 1998int pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kif *); 1999int pf_rtlabel_match(struct pf_addr *, sa_family_t, struct pf_addr_wrap *); 2000#ifdef __FreeBSD__ 2001int pf_socket_lookup(int, struct pf_pdesc *, struct inpcb *); 2002#else 2003int pf_socket_lookup(int, struct pf_pdesc *); 2004#endif 2005struct pf_state_key *pf_alloc_state_key(int); 2006void pf_pkt_addr_changed(struct mbuf *); 2007int pf_state_key_attach(struct pf_state_key *, struct pf_state *, int); 2008void pfr_initialize(void); 2009int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t); 2010void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t, 2011 u_int64_t, int, int, int); 2012int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, 2013 struct pf_addr **, struct pf_addr **, sa_family_t); 2014void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *); 2015struct pfr_ktable * 2016 pfr_attach_table(struct pf_ruleset *, char *, int); 2017void pfr_detach_table(struct pfr_ktable *); 2018int pfr_clr_tables(struct pfr_table *, int *, int); 2019int pfr_add_tables(struct pfr_table *, int, int *, int); 2020int pfr_del_tables(struct pfr_table *, int, int *, int); 2021int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int); 2022int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int); 2023int pfr_clr_tstats(struct pfr_table *, int, int *, int); 2024int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int); 2025int pfr_clr_addrs(struct pfr_table *, int *, int); 2026int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *, long); 2027int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 2028 int); 2029int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 2030 int); 2031int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 2032 int *, int *, int *, int, u_int32_t); 2033int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int); 2034int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int); 2035int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *, 2036 int); 2037int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 2038 int); 2039int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int); 2040int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int); 2041int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int); 2042int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *, 2043 int *, u_int32_t, int); 2044 2045#ifdef __FreeBSD__ 2046VNET_DECLARE(struct pfi_kif *, pfi_all); 2047#define V_pfi_all VNET(pfi_all) 2048#else 2049extern struct pfi_kif *pfi_all; 2050#endif 2051 2052void pfi_initialize(void); 2053#ifdef __FreeBSD__ 2054void pfi_cleanup(void); 2055#endif 2056struct pfi_kif *pfi_kif_get(const char *); 2057void pfi_kif_ref(struct pfi_kif *, enum pfi_kif_refs); 2058void pfi_kif_unref(struct pfi_kif *, enum pfi_kif_refs); 2059int pfi_kif_match(struct pfi_kif *, struct pfi_kif *); 2060void pfi_attach_ifnet(struct ifnet *); 2061void pfi_detach_ifnet(struct ifnet *); 2062void pfi_attach_ifgroup(struct ifg_group *); 2063void pfi_detach_ifgroup(struct ifg_group *); 2064void pfi_group_change(const char *); 2065int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *, 2066 sa_family_t); 2067int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t); 2068void pfi_dynaddr_remove(struct pf_addr_wrap *); 2069void pfi_dynaddr_copyout(struct pf_addr_wrap *); 2070void pfi_update_status(const char *, struct pf_status *); 2071int pfi_get_ifaces(const char *, struct pfi_kif *, int *); 2072int pfi_set_flags(const char *, int); 2073int pfi_clear_flags(const char *, int); 2074 2075#ifdef __FreeBSD__ 2076int pf_match_tag(struct mbuf *, struct pf_rule *, int *, 2077 struct pf_mtag *); 2078#else 2079int pf_match_tag(struct mbuf *, struct pf_rule *, int *); 2080#endif 2081u_int16_t pf_tagname2tag(char *); 2082void pf_tag2tagname(u_int16_t, char *); 2083void pf_tag_ref(u_int16_t); 2084void pf_tag_unref(u_int16_t); 2085#ifdef __FreeBSD__ 2086int pf_tag_packet(struct mbuf *, int, int, struct pf_mtag *); 2087#else 2088int pf_tag_packet(struct mbuf *, int, int); 2089#endif 2090u_int32_t pf_qname2qid(char *); 2091void pf_qid2qname(u_int32_t, char *); 2092void pf_qid_unref(u_int32_t); 2093 2094#ifdef __FreeBSD__ 2095VNET_DECLARE(struct pf_status, pf_status); 2096#define V_pf_status VNET(pf_status) 2097#else 2098extern struct pf_status pf_status; 2099#endif 2100 2101#ifdef __FreeBSD__ 2102VNET_DECLARE(uma_zone_t, pf_frent_pl); 2103#define V_pf_frent_pl VNET(pf_frent_pl) 2104VNET_DECLARE(uma_zone_t, pf_frag_pl); 2105#define V_pf_frag_pl VNET(pf_frag_pl) 2106VNET_DECLARE(struct sx, pf_consistency_lock); 2107#define V_pf_consistency_lock VNET(pf_consistency_lock) 2108#else 2109extern struct pool pf_frent_pl, pf_frag_pl; 2110extern struct rwlock pf_consistency_lock; 2111#endif 2112 2113struct pf_pool_limit { 2114 void *pp; 2115 unsigned limit; 2116}; 2117#ifdef __FreeBSD__ 2118VNET_DECLARE(struct pf_pool_limit, pf_pool_limits[PF_LIMIT_MAX]); 2119#define V_pf_pool_limits VNET(pf_pool_limits) 2120#else 2121extern struct pf_pool_limit pf_pool_limits[PF_LIMIT_MAX]; 2122#endif 2123 2124#ifdef __FreeBSD__ 2125struct pf_frent { 2126 LIST_ENTRY(pf_frent) fr_next; 2127 struct ip *fr_ip; 2128 struct mbuf *fr_m; 2129}; 2130 2131struct pf_frcache { 2132 LIST_ENTRY(pf_frcache) fr_next; 2133 uint16_t fr_off; 2134 uint16_t fr_end; 2135}; 2136 2137struct pf_fragment { 2138 RB_ENTRY(pf_fragment) fr_entry; 2139 TAILQ_ENTRY(pf_fragment) frag_next; 2140 struct in_addr fr_src; 2141 struct in_addr fr_dst; 2142 u_int8_t fr_p; /* protocol of this fragment */ 2143 u_int8_t fr_flags; /* status flags */ 2144 u_int16_t fr_id; /* fragment id for reassemble */ 2145 u_int16_t fr_max; /* fragment data max */ 2146 u_int32_t fr_timeout; 2147#define fr_queue fr_u.fru_queue 2148#define fr_cache fr_u.fru_cache 2149 union { 2150 LIST_HEAD(pf_fragq, pf_frent) fru_queue; /* buffering */ 2151 LIST_HEAD(pf_cacheq, pf_frcache) fru_cache; /* non-buf */ 2152 } fr_u; 2153}; 2154#endif /* (__FreeBSD__) */ 2155 2156#endif /* _KERNEL */ 2157 2158#ifdef __FreeBSD__ 2159#ifdef _KERNEL 2160VNET_DECLARE(struct pf_anchor_global, pf_anchors); 2161#define V_pf_anchors VNET(pf_anchors) 2162VNET_DECLARE(struct pf_anchor, pf_main_anchor); 2163#define V_pf_main_anchor VNET(pf_main_anchor) 2164#define pf_main_ruleset V_pf_main_anchor.ruleset 2165#endif 2166#else 2167extern struct pf_anchor_global pf_anchors; 2168extern struct pf_anchor pf_main_anchor; 2169#define pf_main_ruleset pf_main_anchor.ruleset 2170#endif 2171 2172/* these ruleset functions can be linked into userland programs (pfctl) */ 2173int pf_get_ruleset_number(u_int8_t); 2174void pf_init_ruleset(struct pf_ruleset *); 2175int pf_anchor_setup(struct pf_rule *, 2176 const struct pf_ruleset *, const char *); 2177int pf_anchor_copyout(const struct pf_ruleset *, 2178 const struct pf_rule *, struct pfioc_rule *); 2179void pf_anchor_remove(struct pf_rule *); 2180void pf_remove_if_empty_ruleset(struct pf_ruleset *); 2181struct pf_anchor *pf_find_anchor(const char *); 2182struct pf_ruleset *pf_find_ruleset(const char *); 2183struct pf_ruleset *pf_find_or_create_ruleset(const char *); 2184void pf_rs_initialize(void); 2185 2186#ifndef __FreeBSD__ 2187#ifdef _KERNEL 2188int pf_anchor_copyout(const struct pf_ruleset *, 2189 const struct pf_rule *, struct pfioc_rule *); 2190void pf_anchor_remove(struct pf_rule *); 2191 2192#endif /* _KERNEL */ 2193#endif 2194 2195/* The fingerprint functions can be linked into userland programs (tcpdump) */ 2196int pf_osfp_add(struct pf_osfp_ioctl *); 2197#ifdef _KERNEL 2198struct pf_osfp_enlist * 2199 pf_osfp_fingerprint(struct pf_pdesc *, struct mbuf *, int, 2200 const struct tcphdr *); 2201#endif /* _KERNEL */ 2202struct pf_osfp_enlist * 2203 pf_osfp_fingerprint_hdr(const struct ip *, const struct ip6_hdr *, 2204 const struct tcphdr *); 2205void pf_osfp_flush(void); 2206int pf_osfp_get(struct pf_osfp_ioctl *); 2207#ifdef __FreeBSD__ 2208int pf_osfp_initialize(void); 2209void pf_osfp_cleanup(void); 2210#else 2211void pf_osfp_initialize(void); 2212#endif 2213int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t); 2214struct pf_os_fingerprint * 2215 pf_osfp_validate(void); 2216 2217#ifdef _KERNEL 2218void pf_print_host(struct pf_addr *, u_int16_t, u_int8_t); 2219 2220void pf_step_into_anchor(int *, struct pf_ruleset **, int, 2221 struct pf_rule **, struct pf_rule **, int *); 2222int pf_step_out_of_anchor(int *, struct pf_ruleset **, 2223 int, struct pf_rule **, struct pf_rule **, 2224 int *); 2225 2226int pf_map_addr(u_int8_t, struct pf_rule *, 2227 struct pf_addr *, struct pf_addr *, 2228 struct pf_addr *, struct pf_src_node **); 2229struct pf_rule *pf_get_translation(struct pf_pdesc *, struct mbuf *, 2230 int, int, struct pfi_kif *, struct pf_src_node **, 2231 struct pf_state_key **, struct pf_state_key **, 2232 struct pf_state_key **, struct pf_state_key **, 2233 struct pf_addr *, struct pf_addr *, 2234 u_int16_t, u_int16_t); 2235 2236int pf_state_key_setup(struct pf_pdesc *, struct pf_rule *, 2237 struct pf_state_key **, struct pf_state_key **, 2238 struct pf_state_key **, struct pf_state_key **, 2239 struct pf_addr *, struct pf_addr *, 2240 u_int16_t, u_int16_t); 2241#endif /* _KERNEL */ 2242 2243 2244#endif /* _NET_PFVAR_H_ */ 2245