pfvar.h revision 230868
185909Simp/* $OpenBSD: pfvar.h,v 1.282 2009/01/29 15:12:28 pyr Exp $ */ 285909Simp 3122116Sbde/* 4122116Sbde * Copyright (c) 2001 Daniel Hartmeier 5122116Sbde * All rights reserved. 6180012Sru * 7160440Sobrien * Redistribution and use in source and binary forms, with or without 8210151Simp * modification, are permitted provided that the following conditions 9210151Simp * are met: 10210151Simp * 1185909Simp * - Redistributions of source code must retain the above copyright 1285909Simp * notice, this list of conditions and the following disclaimer. 1385909Simp * - Redistributions in binary form must reproduce the above 1485909Simp * copyright notice, this list of conditions and the following 15175888Simp * disclaimer in the documentation and/or other materials provided 16175888Simp * with the distribution. 1785909Simp * 18218538Simp * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 1985909Simp * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 2091512Sobrien * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 21116341Smarkm * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 2285909Simp * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 2385909Simp * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 2485909Simp * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 2585909Simp * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 26211437Srpaulo * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27140606Sobrien * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 28126890Strhodes * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29140606Sobrien * POSSIBILITY OF SUCH DAMAGE. 30140606Sobrien * 31187103Sgnn */ 32140606Sobrien 33140606Sobrien#ifndef _NET_PFVAR_H_ 34140606Sobrien#define _NET_PFVAR_H_ 35211725Simp 36127204Sobrien#include <sys/param.h> 37136951Sobrien#include <sys/types.h> 38140606Sobrien#include <sys/queue.h> 39127204Sobrien#include <sys/tree.h> 40141782Sobrien#ifdef __FreeBSD__ 41124834Sru#include <sys/lock.h> 42126890Strhodes#include <sys/sx.h> 43124834Sru#else 4485909Simp#include <sys/rwlock.h> 45212521Simp#endif 46126890Strhodes 47126890Strhodes#include <net/radix.h> 4885909Simp#include <net/route.h> 49126890Strhodes#ifdef __FreeBSD__ 5085909Simp#include <net/if_clone.h> 51211437Srpaulo#include <net/pf_mtag.h> 52163333Sru#include <vm/uma.h> 53126890Strhodes#else 54126890Strhodes#include <netinet/ip_ipsp.h> 55160043Sobrien#endif 56126890Strhodes 57126890Strhodes#ifdef __FreeBSD__ 5885909Simp#include <netinet/in.h> 59192901Sthompsa#endif 60126890Strhodes 61151605Sobrien#include <netinet/tcp_fsm.h> 62151605Sobrien 63130416Smlaierstruct ip; 64130416Smlaierstruct ip6_hdr; 65149978Sobrien#ifdef __FreeBSD__ 66149978Sobrienstruct inpcb; 67149978Sobrien#endif 68149978Sobrien 69149978Sobrien#define PF_TCPS_PROXY_SRC ((TCP_NSTATES)+0) 70149978Sobrien#define PF_TCPS_PROXY_DST ((TCP_NSTATES)+1) 71149978Sobrien 72149978Sobrien#define PF_MD5_DIGEST_LENGTH 16 73185522Ssam#ifdef MD5_DIGEST_LENGTH 74185522Ssam#if PF_MD5_DIGEST_LENGTH != MD5_DIGEST_LENGTH 75149978Sobrien#error 76149978Sobrien#endif 77149978Sobrien#endif 78149978Sobrien 79149978Sobrienenum { PF_INOUT, PF_IN, PF_OUT }; 80149978Sobrienenum { PF_PASS, PF_DROP, PF_SCRUB, PF_NOSCRUB, PF_NAT, PF_NONAT, 81149978Sobrien PF_BINAT, PF_NOBINAT, PF_RDR, PF_NORDR, PF_SYNPROXY_DROP, PF_DEFER }; 82153325Srodrigcenum { PF_RULESET_SCRUB, PF_RULESET_FILTER, PF_RULESET_NAT, 83153325Srodrigc PF_RULESET_BINAT, PF_RULESET_RDR, PF_RULESET_MAX }; 84153325Srodrigcenum { PF_OP_NONE, PF_OP_IRG, PF_OP_EQ, PF_OP_NE, PF_OP_LT, 85218792Snp PF_OP_LE, PF_OP_GT, PF_OP_GE, PF_OP_XRG, PF_OP_RRG }; 86218792Snpenum { PF_DEBUG_NONE, PF_DEBUG_URGENT, PF_DEBUG_MISC, PF_DEBUG_NOISY }; 87183292Skmacyenum { PF_CHANGE_NONE, PF_CHANGE_ADD_HEAD, PF_CHANGE_ADD_TAIL, 88149978Sobrien PF_CHANGE_ADD_BEFORE, PF_CHANGE_ADD_AFTER, 89149978Sobrien PF_CHANGE_REMOVE, PF_CHANGE_GET_TICKET }; 90160043Sobrienenum { PF_GET_NONE, PF_GET_CLR_CNTR }; 91150966Sglebiusenum { PF_SK_WIRE, PF_SK_STACK, PF_SK_BOTH }; 92211437Srpaulo 93211437Srpaulo/* 94124834Sru * Note about PFTM_*: real indices into pf_rule.timeout[] come before 95210311Sjmallett * PFTM_MAX, special cases afterwards. See pf_state_expires(). 96132766Skan */ 97132766Skanenum { PFTM_TCP_FIRST_PACKET, PFTM_TCP_OPENING, PFTM_TCP_ESTABLISHED, 98210311Sjmallett PFTM_TCP_CLOSING, PFTM_TCP_FIN_WAIT, PFTM_TCP_CLOSED, 99210311Sjmallett PFTM_UDP_FIRST_PACKET, PFTM_UDP_SINGLE, PFTM_UDP_MULTIPLE, 100215988Sjmallett PFTM_ICMP_FIRST_PACKET, PFTM_ICMP_ERROR_REPLY, 101210311Sjmallett PFTM_OTHER_FIRST_PACKET, PFTM_OTHER_SINGLE, 102215988Sjmallett PFTM_OTHER_MULTIPLE, PFTM_FRAG, PFTM_INTERVAL, 103210311Sjmallett PFTM_ADAPTIVE_START, PFTM_ADAPTIVE_END, PFTM_SRC_NODE, 104210394Srpaulo PFTM_TS_DIFF, PFTM_MAX, PFTM_PURGE, PFTM_UNLINKED, 105171239Speter PFTM_UNTIL_PACKET }; 106126890Strhodes 10785909Simp/* PFTM default values */ 10885909Simp#define PFTM_TCP_FIRST_PACKET_VAL 120 /* First TCP packet */ 10985909Simp#define PFTM_TCP_OPENING_VAL 30 /* No response yet */ 11085909Simp#define PFTM_TCP_ESTABLISHED_VAL 24*60*60/* Established */ 11199923Sbde#define PFTM_TCP_CLOSING_VAL 15 * 60 /* Half closed */ 112211437Srpaulo#define PFTM_TCP_FIN_WAIT_VAL 45 /* Got both FINs */ 113210384Srpaulo#define PFTM_TCP_CLOSED_VAL 90 /* Got a RST */ 114163700Sbde#define PFTM_UDP_FIRST_PACKET_VAL 60 /* First UDP packet */ 11599932Sbde#define PFTM_UDP_SINGLE_VAL 30 /* Unidirectional */ 11699932Sbde#define PFTM_UDP_MULTIPLE_VAL 60 /* Bidirectional */ 11799932Sbde#define PFTM_ICMP_FIRST_PACKET_VAL 20 /* First ICMP packet */ 118163704Sbde#define PFTM_ICMP_ERROR_REPLY_VAL 10 /* Got error response */ 11999932Sbde#define PFTM_OTHER_FIRST_PACKET_VAL 60 /* First packet */ 12099923Sbde#define PFTM_OTHER_SINGLE_VAL 30 /* Unidirectional */ 12199923Sbde#define PFTM_OTHER_MULTIPLE_VAL 60 /* Bidirectional */ 12299932Sbde#define PFTM_FRAG_VAL 30 /* Fragment expire */ 12385909Simp#define PFTM_INTERVAL_VAL 10 /* Expire interval */ 12491002Speter#define PFTM_SRC_NODE_VAL 0 /* Source tracking */ 12585909Simp#define PFTM_TS_DIFF_VAL 30 /* Allowed TS diff */ 12685909Simp 12785909Simpenum { PF_NOPFROUTE, PF_FASTROUTE, PF_ROUTETO, PF_DUPTO, PF_REPLYTO }; 12885909Simpenum { PF_LIMIT_STATES, PF_LIMIT_SRC_NODES, PF_LIMIT_FRAGS, 129116341Smarkm PF_LIMIT_TABLES, PF_LIMIT_TABLE_ENTRIES, PF_LIMIT_MAX }; 130116341Smarkm#define PF_POOL_IDMASK 0x0f 131116341Smarkmenum { PF_POOL_NONE, PF_POOL_BITMASK, PF_POOL_RANDOM, 13291002Speter PF_POOL_SRCHASH, PF_POOL_ROUNDROBIN }; 13391002Speterenum { PF_ADDR_ADDRMASK, PF_ADDR_NOROUTE, PF_ADDR_DYNIFTL, 13491002Speter PF_ADDR_TABLE, PF_ADDR_RTLABEL, PF_ADDR_URPFFAILED, 135105489Smux PF_ADDR_RANGE }; 13685909Simp#define PF_POOL_TYPEMASK 0x0f 137105462Smux#define PF_POOL_STICKYADDR 0x20 138105462Smux#define PF_WSCALE_FLAG 0x80 13985909Simp#define PF_WSCALE_MASK 0x0f 140207056Snetchild 141207056Snetchild#define PF_LOG 0x01 142179226Sjb#define PF_LOG_ALL 0x02 143116341Smarkm#define PF_LOG_SOCKET_LOOKUP 0x04 144116341Smarkm 145131210Simpstruct pf_addr { 146144293Sphk union { 14785909Simp struct in_addr v4; 148111684Sru struct in6_addr v6; 149111684Sru u_int8_t addr8[16]; 150111684Sru u_int16_t addr16[8]; 151206082Snetchild u_int32_t addr32[4]; 152175888Simp } pfa; /* 128-bit address */ 15389180Smsmith#define v4 pfa.v4 15485909Simp#define v6 pfa.v6 15585909Simp#define addr8 pfa.addr8 156123966Sbde#define addr16 pfa.addr16 157175888Simp#define addr32 pfa.addr32 15885909Simp}; 15988893Simp 16088893Simp#define PF_TABLE_NAME_SIZE 32 16188893Simp 16288893Simp#define PFI_AFLAG_NETWORK 0x01 163210151Simp#define PFI_AFLAG_BROADCAST 0x02 16490789Sphk#define PFI_AFLAG_PEER 0x04 16590789Sphk#define PFI_AFLAG_MODEMASK 0x07 16690789Sphk#define PFI_AFLAG_NOALIAS 0x08 16788893Simp 16888893Simpstruct pf_addr_wrap { 16988893Simp union { 170216746Scperciva struct { 171216746Scperciva struct pf_addr addr; 172216746Scperciva struct pf_addr mask; 17388893Simp } a; 174125772Sru char ifname[IFNAMSIZ]; 17588893Simp 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_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__ 240extern 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#define PF_MISMATCHAW(aw, x, af, neg, ifp) \ 406 ( \ 407 (((aw)->type == PF_ADDR_NOROUTE && \ 408 pf_routable((x), (af), NULL)) || \ 409 (((aw)->type == PF_ADDR_URPFFAILED && (ifp) != NULL && \ 410 pf_routable((x), (af), (ifp))) || \ 411 ((aw)->type == PF_ADDR_RTLABEL && \ 412 !pf_rtlabel_match((x), (af), (aw))) || \ 413 ((aw)->type == PF_ADDR_TABLE && \ 414 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \ 415 ((aw)->type == PF_ADDR_DYNIFTL && \ 416 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \ 417 ((aw)->type == PF_ADDR_RANGE && \ 418 !pf_match_addr_range(&(aw)->v.a.addr, \ 419 &(aw)->v.a.mask, (x), (af))) || \ 420 ((aw)->type == PF_ADDR_ADDRMASK && \ 421 !PF_AZERO(&(aw)->v.a.mask, (af)) && \ 422 !PF_MATCHA(0, &(aw)->v.a.addr, \ 423 &(aw)->v.a.mask, (x), (af))))) != \ 424 (neg) \ 425 ) 426 427 428struct pf_rule_uid { 429 uid_t uid[2]; 430 u_int8_t op; 431}; 432 433struct pf_rule_gid { 434 uid_t gid[2]; 435 u_int8_t op; 436}; 437 438struct pf_rule_addr { 439 struct pf_addr_wrap addr; 440 u_int16_t port[2]; 441 u_int8_t neg; 442 u_int8_t port_op; 443}; 444 445struct pf_pooladdr { 446 struct pf_addr_wrap addr; 447 TAILQ_ENTRY(pf_pooladdr) entries; 448 char ifname[IFNAMSIZ]; 449 struct pfi_kif *kif; 450}; 451 452TAILQ_HEAD(pf_palist, pf_pooladdr); 453 454struct pf_poolhashkey { 455 union { 456 u_int8_t key8[16]; 457 u_int16_t key16[8]; 458 u_int32_t key32[4]; 459 } pfk; /* 128-bit hash key */ 460#define key8 pfk.key8 461#define key16 pfk.key16 462#define key32 pfk.key32 463}; 464 465struct pf_pool { 466 struct pf_palist list; 467 struct pf_pooladdr *cur; 468 struct pf_poolhashkey key; 469 struct pf_addr counter; 470 int tblidx; 471 u_int16_t proxy_port[2]; 472 u_int8_t port_op; 473 u_int8_t opts; 474}; 475 476 477/* A packed Operating System description for fingerprinting */ 478typedef u_int32_t pf_osfp_t; 479#define PF_OSFP_ANY ((pf_osfp_t)0) 480#define PF_OSFP_UNKNOWN ((pf_osfp_t)-1) 481#define PF_OSFP_NOMATCH ((pf_osfp_t)-2) 482 483struct pf_osfp_entry { 484 SLIST_ENTRY(pf_osfp_entry) fp_entry; 485 pf_osfp_t fp_os; 486 int fp_enflags; 487#define PF_OSFP_EXPANDED 0x001 /* expanded entry */ 488#define PF_OSFP_GENERIC 0x002 /* generic signature */ 489#define PF_OSFP_NODETAIL 0x004 /* no p0f details */ 490#define PF_OSFP_LEN 32 491 char fp_class_nm[PF_OSFP_LEN]; 492 char fp_version_nm[PF_OSFP_LEN]; 493 char fp_subtype_nm[PF_OSFP_LEN]; 494}; 495#define PF_OSFP_ENTRY_EQ(a, b) \ 496 ((a)->fp_os == (b)->fp_os && \ 497 memcmp((a)->fp_class_nm, (b)->fp_class_nm, PF_OSFP_LEN) == 0 && \ 498 memcmp((a)->fp_version_nm, (b)->fp_version_nm, PF_OSFP_LEN) == 0 && \ 499 memcmp((a)->fp_subtype_nm, (b)->fp_subtype_nm, PF_OSFP_LEN) == 0) 500 501/* handle pf_osfp_t packing */ 502#define _FP_RESERVED_BIT 1 /* For the special negative #defines */ 503#define _FP_UNUSED_BITS 1 504#define _FP_CLASS_BITS 10 /* OS Class (Windows, Linux) */ 505#define _FP_VERSION_BITS 10 /* OS version (95, 98, NT, 2.4.54, 3.2) */ 506#define _FP_SUBTYPE_BITS 10 /* patch level (NT SP4, SP3, ECN patch) */ 507#define PF_OSFP_UNPACK(osfp, class, version, subtype) do { \ 508 (class) = ((osfp) >> (_FP_VERSION_BITS+_FP_SUBTYPE_BITS)) & \ 509 ((1 << _FP_CLASS_BITS) - 1); \ 510 (version) = ((osfp) >> _FP_SUBTYPE_BITS) & \ 511 ((1 << _FP_VERSION_BITS) - 1);\ 512 (subtype) = (osfp) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 513} while(0) 514#define PF_OSFP_PACK(osfp, class, version, subtype) do { \ 515 (osfp) = ((class) & ((1 << _FP_CLASS_BITS) - 1)) << (_FP_VERSION_BITS \ 516 + _FP_SUBTYPE_BITS); \ 517 (osfp) |= ((version) & ((1 << _FP_VERSION_BITS) - 1)) << \ 518 _FP_SUBTYPE_BITS; \ 519 (osfp) |= (subtype) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 520} while(0) 521 522/* the fingerprint of an OSes TCP SYN packet */ 523typedef u_int64_t pf_tcpopts_t; 524struct pf_os_fingerprint { 525 SLIST_HEAD(pf_osfp_enlist, pf_osfp_entry) fp_oses; /* list of matches */ 526 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 527 u_int16_t fp_wsize; /* TCP window size */ 528 u_int16_t fp_psize; /* ip->ip_len */ 529 u_int16_t fp_mss; /* TCP MSS */ 530 u_int16_t fp_flags; 531#define PF_OSFP_WSIZE_MOD 0x0001 /* Window modulus */ 532#define PF_OSFP_WSIZE_DC 0x0002 /* Window don't care */ 533#define PF_OSFP_WSIZE_MSS 0x0004 /* Window multiple of MSS */ 534#define PF_OSFP_WSIZE_MTU 0x0008 /* Window multiple of MTU */ 535#define PF_OSFP_PSIZE_MOD 0x0010 /* packet size modulus */ 536#define PF_OSFP_PSIZE_DC 0x0020 /* packet size don't care */ 537#define PF_OSFP_WSCALE 0x0040 /* TCP window scaling */ 538#define PF_OSFP_WSCALE_MOD 0x0080 /* TCP window scale modulus */ 539#define PF_OSFP_WSCALE_DC 0x0100 /* TCP window scale dont-care */ 540#define PF_OSFP_MSS 0x0200 /* TCP MSS */ 541#define PF_OSFP_MSS_MOD 0x0400 /* TCP MSS modulus */ 542#define PF_OSFP_MSS_DC 0x0800 /* TCP MSS dont-care */ 543#define PF_OSFP_DF 0x1000 /* IPv4 don't fragment bit */ 544#define PF_OSFP_TS0 0x2000 /* Zero timestamp */ 545#define PF_OSFP_INET6 0x4000 /* IPv6 */ 546 u_int8_t fp_optcnt; /* TCP option count */ 547 u_int8_t fp_wscale; /* TCP window scaling */ 548 u_int8_t fp_ttl; /* IPv4 TTL */ 549#define PF_OSFP_MAXTTL_OFFSET 40 550/* TCP options packing */ 551#define PF_OSFP_TCPOPT_NOP 0x0 /* TCP NOP option */ 552#define PF_OSFP_TCPOPT_WSCALE 0x1 /* TCP window scaling option */ 553#define PF_OSFP_TCPOPT_MSS 0x2 /* TCP max segment size opt */ 554#define PF_OSFP_TCPOPT_SACK 0x3 /* TCP SACK OK option */ 555#define PF_OSFP_TCPOPT_TS 0x4 /* TCP timestamp option */ 556#define PF_OSFP_TCPOPT_BITS 3 /* bits used by each option */ 557#define PF_OSFP_MAX_OPTS \ 558 (sizeof(((struct pf_os_fingerprint *)0)->fp_tcpopts) * 8) \ 559 / PF_OSFP_TCPOPT_BITS 560 561 SLIST_ENTRY(pf_os_fingerprint) fp_next; 562}; 563 564struct pf_osfp_ioctl { 565 struct pf_osfp_entry fp_os; 566 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 567 u_int16_t fp_wsize; /* TCP window size */ 568 u_int16_t fp_psize; /* ip->ip_len */ 569 u_int16_t fp_mss; /* TCP MSS */ 570 u_int16_t fp_flags; 571 u_int8_t fp_optcnt; /* TCP option count */ 572 u_int8_t fp_wscale; /* TCP window scaling */ 573 u_int8_t fp_ttl; /* IPv4 TTL */ 574 575 int fp_getnum; /* DIOCOSFPGET number */ 576}; 577 578 579union pf_rule_ptr { 580 struct pf_rule *ptr; 581 u_int32_t nr; 582}; 583 584#define PF_ANCHOR_NAME_SIZE 64 585 586struct pf_rule { 587 struct pf_rule_addr src; 588 struct pf_rule_addr dst; 589#define PF_SKIP_IFP 0 590#define PF_SKIP_DIR 1 591#define PF_SKIP_AF 2 592#define PF_SKIP_PROTO 3 593#define PF_SKIP_SRC_ADDR 4 594#define PF_SKIP_SRC_PORT 5 595#define PF_SKIP_DST_ADDR 6 596#define PF_SKIP_DST_PORT 7 597#define PF_SKIP_COUNT 8 598 union pf_rule_ptr skip[PF_SKIP_COUNT]; 599#define PF_RULE_LABEL_SIZE 64 600 char label[PF_RULE_LABEL_SIZE]; 601#define PF_QNAME_SIZE 64 602 char ifname[IFNAMSIZ]; 603 char qname[PF_QNAME_SIZE]; 604 char pqname[PF_QNAME_SIZE]; 605#define PF_TAG_NAME_SIZE 64 606 char tagname[PF_TAG_NAME_SIZE]; 607 char match_tagname[PF_TAG_NAME_SIZE]; 608 609 char overload_tblname[PF_TABLE_NAME_SIZE]; 610 611 TAILQ_ENTRY(pf_rule) entries; 612 struct pf_pool rpool; 613 614 u_int64_t evaluations; 615 u_int64_t packets[2]; 616 u_int64_t bytes[2]; 617 618 struct pfi_kif *kif; 619 struct pf_anchor *anchor; 620 struct pfr_ktable *overload_tbl; 621 622 pf_osfp_t os_fingerprint; 623 624 int rtableid; 625 u_int32_t timeout[PFTM_MAX]; 626 u_int32_t states_cur; 627 u_int32_t states_tot; 628 u_int32_t max_states; 629 u_int32_t src_nodes; 630 u_int32_t max_src_nodes; 631 u_int32_t max_src_states; 632 u_int32_t spare1; /* netgraph */ 633 u_int32_t max_src_conn; 634 struct { 635 u_int32_t limit; 636 u_int32_t seconds; 637 } max_src_conn_rate; 638 u_int32_t qid; 639 u_int32_t pqid; 640 u_int32_t rt_listid; 641 u_int32_t nr; 642 u_int32_t prob; 643 uid_t cuid; 644 pid_t cpid; 645 646 u_int16_t return_icmp; 647 u_int16_t return_icmp6; 648 u_int16_t max_mss; 649 u_int16_t tag; 650 u_int16_t match_tag; 651 u_int16_t spare2; /* netgraph */ 652 653 struct pf_rule_uid uid; 654 struct pf_rule_gid gid; 655 656 u_int32_t rule_flag; 657 u_int8_t action; 658 u_int8_t direction; 659 u_int8_t log; 660 u_int8_t logif; 661 u_int8_t quick; 662 u_int8_t ifnot; 663 u_int8_t match_tag_not; 664 u_int8_t natpass; 665 666#define PF_STATE_NORMAL 0x1 667#define PF_STATE_MODULATE 0x2 668#define PF_STATE_SYNPROXY 0x3 669 u_int8_t keep_state; 670 sa_family_t af; 671 u_int8_t proto; 672 u_int8_t type; 673 u_int8_t code; 674 u_int8_t flags; 675 u_int8_t flagset; 676 u_int8_t min_ttl; 677 u_int8_t allow_opts; 678 u_int8_t rt; 679 u_int8_t return_ttl; 680 u_int8_t tos; 681 u_int8_t set_tos; 682 u_int8_t anchor_relative; 683 u_int8_t anchor_wildcard; 684 685#define PF_FLUSH 0x01 686#define PF_FLUSH_GLOBAL 0x02 687 u_int8_t flush; 688 689 struct { 690 struct pf_addr addr; 691 u_int16_t port; 692 } divert; 693}; 694 695/* rule flags */ 696#define PFRULE_DROP 0x0000 697#define PFRULE_RETURNRST 0x0001 698#define PFRULE_FRAGMENT 0x0002 699#define PFRULE_RETURNICMP 0x0004 700#define PFRULE_RETURN 0x0008 701#define PFRULE_NOSYNC 0x0010 702#define PFRULE_SRCTRACK 0x0020 /* track source states */ 703#define PFRULE_RULESRCTRACK 0x0040 /* per rule */ 704 705/* scrub flags */ 706#define PFRULE_NODF 0x0100 707#define PFRULE_FRAGCROP 0x0200 /* non-buffering frag cache */ 708#define PFRULE_FRAGDROP 0x0400 /* drop funny fragments */ 709#define PFRULE_RANDOMID 0x0800 710#define PFRULE_REASSEMBLE_TCP 0x1000 711#define PFRULE_SET_TOS 0x2000 712 713/* rule flags again */ 714#define PFRULE_IFBOUND 0x00010000 /* if-bound */ 715#define PFRULE_STATESLOPPY 0x00020000 /* sloppy state tracking */ 716#define PFRULE_PFLOW 0x00040000 717 718#define PFSTATE_HIWAT 10000 /* default state table size */ 719#define PFSTATE_ADAPT_START 6000 /* default adaptive timeout start */ 720#define PFSTATE_ADAPT_END 12000 /* default adaptive timeout end */ 721 722 723struct pf_threshold { 724 u_int32_t limit; 725#define PF_THRESHOLD_MULT 1000 726#define PF_THRESHOLD_MAX 0xffffffff / PF_THRESHOLD_MULT 727 u_int32_t seconds; 728 u_int32_t count; 729 u_int32_t last; 730}; 731 732struct pf_src_node { 733 RB_ENTRY(pf_src_node) entry; 734 struct pf_addr addr; 735 struct pf_addr raddr; 736 union pf_rule_ptr rule; 737 struct pfi_kif *kif; 738 u_int64_t bytes[2]; 739 u_int64_t packets[2]; 740 u_int32_t states; 741 u_int32_t conn; 742 struct pf_threshold conn_rate; 743 u_int32_t creation; 744 u_int32_t expire; 745 sa_family_t af; 746 u_int8_t ruletype; 747}; 748 749#define PFSNODE_HIWAT 10000 /* default source node table size */ 750 751struct pf_state_scrub { 752 struct timeval pfss_last; /* time received last packet */ 753 u_int32_t pfss_tsecr; /* last echoed timestamp */ 754 u_int32_t pfss_tsval; /* largest timestamp */ 755 u_int32_t pfss_tsval0; /* original timestamp */ 756 u_int16_t pfss_flags; 757#define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */ 758#define PFSS_PAWS 0x0010 /* stricter PAWS checks */ 759#define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */ 760#define PFSS_DATA_TS 0x0040 /* timestamp on data packets */ 761#define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */ 762 u_int8_t pfss_ttl; /* stashed TTL */ 763 u_int8_t pad; 764 u_int32_t pfss_ts_mod; /* timestamp modulation */ 765}; 766 767struct pf_state_host { 768 struct pf_addr addr; 769 u_int16_t port; 770 u_int16_t pad; 771}; 772 773struct pf_state_peer { 774 struct pf_state_scrub *scrub; /* state is scrubbed */ 775 u_int32_t seqlo; /* Max sequence number sent */ 776 u_int32_t seqhi; /* Max the other end ACKd + win */ 777 u_int32_t seqdiff; /* Sequence number modulator */ 778 u_int16_t max_win; /* largest window (pre scaling) */ 779 u_int16_t mss; /* Maximum segment size option */ 780 u_int8_t state; /* active state level */ 781 u_int8_t wscale; /* window scaling factor */ 782 u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */ 783 u_int8_t pad[1]; 784}; 785 786TAILQ_HEAD(pf_state_queue, pf_state); 787 788/* keep synced with struct pf_state_key, used in RB_FIND */ 789struct pf_state_key_cmp { 790 struct pf_addr addr[2]; 791 u_int16_t port[2]; 792 sa_family_t af; 793 u_int8_t proto; 794 u_int8_t pad[2]; 795}; 796 797struct pf_state_item { 798 TAILQ_ENTRY(pf_state_item) entry; 799 struct pf_state *s; 800}; 801 802TAILQ_HEAD(pf_statelisthead, pf_state_item); 803 804struct pf_state_key { 805 struct pf_addr addr[2]; 806 u_int16_t port[2]; 807 sa_family_t af; 808 u_int8_t proto; 809 u_int8_t pad[2]; 810 811 RB_ENTRY(pf_state_key) entry; 812 struct pf_statelisthead states; 813 struct pf_state_key *reverse; 814 struct inpcb *inp; 815}; 816 817/* keep synced with struct pf_state, used in RB_FIND */ 818struct pf_state_cmp { 819 u_int64_t id; 820 u_int32_t creatorid; 821 u_int8_t direction; 822 u_int8_t pad[3]; 823}; 824 825struct pf_state { 826 u_int64_t id; 827 u_int32_t creatorid; 828 u_int8_t direction; 829#ifdef __FreeBSD__ 830 u_int8_t pad[2]; 831 u_int8_t local_flags; 832#define PFSTATE_EXPIRING 0x01 833#else 834 u_int8_t pad[3]; 835#endif 836 837 TAILQ_ENTRY(pf_state) sync_list; 838 TAILQ_ENTRY(pf_state) entry_list; 839 RB_ENTRY(pf_state) entry_id; 840 struct pf_state_peer src; 841 struct pf_state_peer dst; 842 union pf_rule_ptr rule; 843 union pf_rule_ptr anchor; 844 union pf_rule_ptr nat_rule; 845 struct pf_addr rt_addr; 846 struct pf_state_key *key[2]; /* addresses stack and wire */ 847 struct pfi_kif *kif; 848 struct pfi_kif *rt_kif; 849 struct pf_src_node *src_node; 850 struct pf_src_node *nat_src_node; 851 u_int64_t packets[2]; 852 u_int64_t bytes[2]; 853 u_int32_t creation; 854 u_int32_t expire; 855 u_int32_t pfsync_time; 856 u_int16_t tag; 857 u_int8_t log; 858 u_int8_t state_flags; 859#define PFSTATE_ALLOWOPTS 0x01 860#define PFSTATE_SLOPPY 0x02 861#define PFSTATE_PFLOW 0x04 862#define PFSTATE_NOSYNC 0x08 863#define PFSTATE_ACK 0x10 864 u_int8_t timeout; 865 u_int8_t sync_state; /* PFSYNC_S_x */ 866 867 /* XXX */ 868 u_int8_t sync_updates; 869 u_int8_t _tail[3]; 870}; 871 872/* 873 * Unified state structures for pulling states out of the kernel 874 * used by pfsync(4) and the pf(4) ioctl. 875 */ 876struct pfsync_state_scrub { 877 u_int16_t pfss_flags; 878 u_int8_t pfss_ttl; /* stashed TTL */ 879#define PFSYNC_SCRUB_FLAG_VALID 0x01 880 u_int8_t scrub_flag; 881 u_int32_t pfss_ts_mod; /* timestamp modulation */ 882} __packed; 883 884struct pfsync_state_peer { 885 struct pfsync_state_scrub scrub; /* state is scrubbed */ 886 u_int32_t seqlo; /* Max sequence number sent */ 887 u_int32_t seqhi; /* Max the other end ACKd + win */ 888 u_int32_t seqdiff; /* Sequence number modulator */ 889 u_int16_t max_win; /* largest window (pre scaling) */ 890 u_int16_t mss; /* Maximum segment size option */ 891 u_int8_t state; /* active state level */ 892 u_int8_t wscale; /* window scaling factor */ 893 u_int8_t pad[6]; 894} __packed; 895 896struct pfsync_state_key { 897 struct pf_addr addr[2]; 898 u_int16_t port[2]; 899}; 900 901struct pfsync_state { 902 u_int32_t id[2]; 903 char ifname[IFNAMSIZ]; 904 struct pfsync_state_key key[2]; 905 struct pfsync_state_peer src; 906 struct pfsync_state_peer dst; 907 struct pf_addr rt_addr; 908 u_int32_t rule; 909 u_int32_t anchor; 910 u_int32_t nat_rule; 911 u_int32_t creation; 912 u_int32_t expire; 913 u_int32_t packets[2][2]; 914 u_int32_t bytes[2][2]; 915 u_int32_t creatorid; 916 sa_family_t af; 917 u_int8_t proto; 918 u_int8_t direction; 919#ifdef __FreeBSD__ 920 u_int8_t local_flags; 921#define PFSTATE_EXPIRING 0x01 922 u_int8_t pad; 923#endif 924 u_int8_t log; 925 u_int8_t state_flags; 926 u_int8_t timeout; 927 u_int8_t sync_flags; 928 u_int8_t updates; 929} __packed; 930 931#ifdef __FreeBSD__ 932#ifdef _KERNEL 933/* pfsync */ 934typedef int pfsync_state_import_t(struct pfsync_state *, u_int8_t); 935typedef void pfsync_insert_state_t(struct pf_state *); 936typedef void pfsync_update_state_t(struct pf_state *); 937typedef void pfsync_delete_state_t(struct pf_state *); 938typedef void pfsync_clear_states_t(u_int32_t, const char *); 939typedef int pfsync_state_in_use_t(struct pf_state *); 940typedef int pfsync_defer_t(struct pf_state *, struct mbuf *); 941typedef int pfsync_up_t(void); 942 943extern pfsync_state_import_t *pfsync_state_import_ptr; 944extern pfsync_insert_state_t *pfsync_insert_state_ptr; 945extern pfsync_update_state_t *pfsync_update_state_ptr; 946extern pfsync_delete_state_t *pfsync_delete_state_ptr; 947extern pfsync_clear_states_t *pfsync_clear_states_ptr; 948extern pfsync_state_in_use_t *pfsync_state_in_use_ptr; 949extern pfsync_defer_t *pfsync_defer_ptr; 950extern pfsync_up_t *pfsync_up_ptr; 951 952void pfsync_state_export(struct pfsync_state *, 953 struct pf_state *); 954 955/* pflow */ 956typedef int export_pflow_t(struct pf_state *); 957 958extern export_pflow_t *export_pflow_ptr; 959 960/* pflog */ 961struct pf_ruleset; 962struct pf_pdesc; 963typedef int pflog_packet_t(struct pfi_kif *, struct mbuf *, sa_family_t, 964 u_int8_t, u_int8_t, struct pf_rule *, struct pf_rule *, 965 struct pf_ruleset *, struct pf_pdesc *); 966 967extern pflog_packet_t *pflog_packet_ptr; 968 969/* pf uid hack */ 970VNET_DECLARE(int, debug_pfugidhack); 971#define V_debug_pfugidhack VNET(debug_pfugidhack) 972 973#define V_pf_end_threads VNET(pf_end_threads) 974#endif 975 976/* Macros to set/clear/test flags. */ 977#ifdef _KERNEL 978#define SET(t, f) ((t) |= (f)) 979#define CLR(t, f) ((t) &= ~(f)) 980#define ISSET(t, f) ((t) & (f)) 981#endif 982#endif 983 984#define PFSYNC_FLAG_SRCNODE 0x04 985#define PFSYNC_FLAG_NATSRCNODE 0x08 986 987/* for copies to/from network byte order */ 988/* ioctl interface also uses network byte order */ 989#define pf_state_peer_hton(s,d) do { \ 990 (d)->seqlo = htonl((s)->seqlo); \ 991 (d)->seqhi = htonl((s)->seqhi); \ 992 (d)->seqdiff = htonl((s)->seqdiff); \ 993 (d)->max_win = htons((s)->max_win); \ 994 (d)->mss = htons((s)->mss); \ 995 (d)->state = (s)->state; \ 996 (d)->wscale = (s)->wscale; \ 997 if ((s)->scrub) { \ 998 (d)->scrub.pfss_flags = \ 999 htons((s)->scrub->pfss_flags & PFSS_TIMESTAMP); \ 1000 (d)->scrub.pfss_ttl = (s)->scrub->pfss_ttl; \ 1001 (d)->scrub.pfss_ts_mod = htonl((s)->scrub->pfss_ts_mod);\ 1002 (d)->scrub.scrub_flag = PFSYNC_SCRUB_FLAG_VALID; \ 1003 } \ 1004} while (0) 1005 1006#define pf_state_peer_ntoh(s,d) do { \ 1007 (d)->seqlo = ntohl((s)->seqlo); \ 1008 (d)->seqhi = ntohl((s)->seqhi); \ 1009 (d)->seqdiff = ntohl((s)->seqdiff); \ 1010 (d)->max_win = ntohs((s)->max_win); \ 1011 (d)->mss = ntohs((s)->mss); \ 1012 (d)->state = (s)->state; \ 1013 (d)->wscale = (s)->wscale; \ 1014 if ((s)->scrub.scrub_flag == PFSYNC_SCRUB_FLAG_VALID && \ 1015 (d)->scrub != NULL) { \ 1016 (d)->scrub->pfss_flags = \ 1017 ntohs((s)->scrub.pfss_flags) & PFSS_TIMESTAMP; \ 1018 (d)->scrub->pfss_ttl = (s)->scrub.pfss_ttl; \ 1019 (d)->scrub->pfss_ts_mod = ntohl((s)->scrub.pfss_ts_mod);\ 1020 } \ 1021} while (0) 1022 1023#define pf_state_counter_hton(s,d) do { \ 1024 d[0] = htonl((s>>32)&0xffffffff); \ 1025 d[1] = htonl(s&0xffffffff); \ 1026} while (0) 1027 1028#define pf_state_counter_from_pfsync(s) \ 1029 (((u_int64_t)(s[0])<<32) | (u_int64_t)(s[1])) 1030 1031#define pf_state_counter_ntoh(s,d) do { \ 1032 d = ntohl(s[0]); \ 1033 d = d<<32; \ 1034 d += ntohl(s[1]); \ 1035} while (0) 1036 1037TAILQ_HEAD(pf_rulequeue, pf_rule); 1038 1039struct pf_anchor; 1040 1041struct pf_ruleset { 1042 struct { 1043 struct pf_rulequeue queues[2]; 1044 struct { 1045 struct pf_rulequeue *ptr; 1046 struct pf_rule **ptr_array; 1047 u_int32_t rcount; 1048 u_int32_t ticket; 1049 int open; 1050 } active, inactive; 1051 } rules[PF_RULESET_MAX]; 1052 struct pf_anchor *anchor; 1053 u_int32_t tticket; 1054 int tables; 1055 int topen; 1056}; 1057 1058RB_HEAD(pf_anchor_global, pf_anchor); 1059RB_HEAD(pf_anchor_node, pf_anchor); 1060struct pf_anchor { 1061 RB_ENTRY(pf_anchor) entry_global; 1062 RB_ENTRY(pf_anchor) entry_node; 1063 struct pf_anchor *parent; 1064 struct pf_anchor_node children; 1065 char name[PF_ANCHOR_NAME_SIZE]; 1066 char path[MAXPATHLEN]; 1067 struct pf_ruleset ruleset; 1068 int refcnt; /* anchor rules */ 1069 int match; 1070}; 1071RB_PROTOTYPE(pf_anchor_global, pf_anchor, entry_global, pf_anchor_compare); 1072RB_PROTOTYPE(pf_anchor_node, pf_anchor, entry_node, pf_anchor_compare); 1073 1074#define PF_RESERVED_ANCHOR "_pf" 1075 1076#define PFR_TFLAG_PERSIST 0x00000001 1077#define PFR_TFLAG_CONST 0x00000002 1078#define PFR_TFLAG_ACTIVE 0x00000004 1079#define PFR_TFLAG_INACTIVE 0x00000008 1080#define PFR_TFLAG_REFERENCED 0x00000010 1081#define PFR_TFLAG_REFDANCHOR 0x00000020 1082#define PFR_TFLAG_COUNTERS 0x00000040 1083/* Adjust masks below when adding flags. */ 1084#define PFR_TFLAG_USRMASK 0x00000043 1085#define PFR_TFLAG_SETMASK 0x0000003C 1086#define PFR_TFLAG_ALLMASK 0x0000007F 1087 1088struct pfr_table { 1089 char pfrt_anchor[MAXPATHLEN]; 1090 char pfrt_name[PF_TABLE_NAME_SIZE]; 1091 u_int32_t pfrt_flags; 1092 u_int8_t pfrt_fback; 1093}; 1094 1095enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED, 1096 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE, 1097 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_NOCOUNT, PFR_FB_MAX }; 1098 1099struct pfr_addr { 1100 union { 1101 struct in_addr _pfra_ip4addr; 1102 struct in6_addr _pfra_ip6addr; 1103 } pfra_u; 1104 u_int8_t pfra_af; 1105 u_int8_t pfra_net; 1106 u_int8_t pfra_not; 1107 u_int8_t pfra_fback; 1108}; 1109#define pfra_ip4addr pfra_u._pfra_ip4addr 1110#define pfra_ip6addr pfra_u._pfra_ip6addr 1111 1112enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX }; 1113enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX }; 1114#define PFR_OP_XPASS PFR_OP_ADDR_MAX 1115 1116struct pfr_astats { 1117 struct pfr_addr pfras_a; 1118 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1119 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1120 long pfras_tzero; 1121}; 1122 1123enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX }; 1124 1125struct pfr_tstats { 1126 struct pfr_table pfrts_t; 1127 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1128 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1129 u_int64_t pfrts_match; 1130 u_int64_t pfrts_nomatch; 1131 long pfrts_tzero; 1132 int pfrts_cnt; 1133 int pfrts_refcnt[PFR_REFCNT_MAX]; 1134}; 1135#define pfrts_name pfrts_t.pfrt_name 1136#define pfrts_flags pfrts_t.pfrt_flags 1137 1138#ifndef _SOCKADDR_UNION_DEFINED 1139#define _SOCKADDR_UNION_DEFINED 1140union sockaddr_union { 1141 struct sockaddr sa; 1142 struct sockaddr_in sin; 1143 struct sockaddr_in6 sin6; 1144}; 1145#endif /* _SOCKADDR_UNION_DEFINED */ 1146 1147struct pfr_kcounters { 1148 u_int64_t pfrkc_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1149 u_int64_t pfrkc_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1150}; 1151 1152SLIST_HEAD(pfr_kentryworkq, pfr_kentry); 1153struct pfr_kentry { 1154 struct radix_node pfrke_node[2]; 1155 union sockaddr_union pfrke_sa; 1156 SLIST_ENTRY(pfr_kentry) pfrke_workq; 1157 union { 1158 1159 struct pfr_kcounters *pfrke_counters; 1160#if 0 1161 struct pfr_kroute *pfrke_route; 1162#endif 1163 } u; 1164 long pfrke_tzero; 1165 u_int8_t pfrke_af; 1166 u_int8_t pfrke_net; 1167 u_int8_t pfrke_not; 1168 u_int8_t pfrke_mark; 1169}; 1170#define pfrke_counters u.pfrke_counters 1171#define pfrke_route u.pfrke_route 1172 1173 1174SLIST_HEAD(pfr_ktableworkq, pfr_ktable); 1175RB_HEAD(pfr_ktablehead, pfr_ktable); 1176struct pfr_ktable { 1177 struct pfr_tstats pfrkt_ts; 1178 RB_ENTRY(pfr_ktable) pfrkt_tree; 1179 SLIST_ENTRY(pfr_ktable) pfrkt_workq; 1180 struct radix_node_head *pfrkt_ip4; 1181 struct radix_node_head *pfrkt_ip6; 1182 struct pfr_ktable *pfrkt_shadow; 1183 struct pfr_ktable *pfrkt_root; 1184 struct pf_ruleset *pfrkt_rs; 1185 long pfrkt_larg; 1186 int pfrkt_nflags; 1187}; 1188#define pfrkt_t pfrkt_ts.pfrts_t 1189#define pfrkt_name pfrkt_t.pfrt_name 1190#define pfrkt_anchor pfrkt_t.pfrt_anchor 1191#define pfrkt_ruleset pfrkt_t.pfrt_ruleset 1192#define pfrkt_flags pfrkt_t.pfrt_flags 1193#define pfrkt_cnt pfrkt_ts.pfrts_cnt 1194#define pfrkt_refcnt pfrkt_ts.pfrts_refcnt 1195#define pfrkt_packets pfrkt_ts.pfrts_packets 1196#define pfrkt_bytes pfrkt_ts.pfrts_bytes 1197#define pfrkt_match pfrkt_ts.pfrts_match 1198#define pfrkt_nomatch pfrkt_ts.pfrts_nomatch 1199#define pfrkt_tzero pfrkt_ts.pfrts_tzero 1200 1201RB_HEAD(pf_state_tree, pf_state_key); 1202RB_PROTOTYPE(pf_state_tree, pf_state_key, entry, pf_state_compare_key); 1203 1204RB_HEAD(pf_state_tree_ext_gwy, pf_state_key); 1205RB_PROTOTYPE(pf_state_tree_ext_gwy, pf_state_key, 1206 entry_ext_gwy, pf_state_compare_ext_gwy); 1207 1208RB_HEAD(pfi_ifhead, pfi_kif); 1209 1210/* state tables */ 1211#ifdef __FreeBSD__ 1212#ifdef _KERNEL 1213VNET_DECLARE(struct pf_state_tree, pf_statetbl); 1214#define V_pf_statetbl VNET(pf_statetbl) 1215#endif 1216#else 1217extern struct pf_state_tree pf_statetbl; 1218#endif 1219 1220/* keep synced with pfi_kif, used in RB_FIND */ 1221struct pfi_kif_cmp { 1222 char pfik_name[IFNAMSIZ]; 1223}; 1224 1225struct pfi_kif { 1226 char pfik_name[IFNAMSIZ]; 1227 RB_ENTRY(pfi_kif) pfik_tree; 1228 u_int64_t pfik_packets[2][2][2]; 1229 u_int64_t pfik_bytes[2][2][2]; 1230 u_int32_t pfik_tzero; 1231 int pfik_flags; 1232 void *pfik_ah_cookie; 1233 struct ifnet *pfik_ifp; 1234 struct ifg_group *pfik_group; 1235 int pfik_states; 1236 int pfik_rules; 1237 TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs; 1238}; 1239 1240enum pfi_kif_refs { 1241 PFI_KIF_REF_NONE, 1242 PFI_KIF_REF_STATE, 1243 PFI_KIF_REF_RULE 1244}; 1245 1246#define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */ 1247 1248struct pf_pdesc { 1249 struct { 1250 int done; 1251 uid_t uid; 1252 gid_t gid; 1253 pid_t pid; 1254 } lookup; 1255 u_int64_t tot_len; /* Make Mickey money */ 1256 union { 1257 struct tcphdr *tcp; 1258 struct udphdr *udp; 1259 struct icmp *icmp; 1260#ifdef INET6 1261 struct icmp6_hdr *icmp6; 1262#endif /* INET6 */ 1263 void *any; 1264 } hdr; 1265 1266 struct pf_rule *nat_rule; /* nat/rdr rule applied to packet */ 1267 struct ether_header 1268 *eh; 1269 struct pf_addr *src; /* src address */ 1270 struct pf_addr *dst; /* dst address */ 1271 u_int16_t *sport; 1272 u_int16_t *dport; 1273#ifdef __FreeBSD__ 1274 struct pf_mtag *pf_mtag; 1275#endif 1276 1277 u_int32_t p_len; /* total length of payload */ 1278 1279 u_int16_t *ip_sum; 1280 u_int16_t *proto_sum; 1281 u_int16_t flags; /* Let SCRUB trigger behavior in 1282 * state code. Easier than tags */ 1283#define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */ 1284#define PFDESC_IP_REAS 0x0002 /* IP frags would've been reassembled */ 1285 sa_family_t af; 1286 u_int8_t proto; 1287 u_int8_t tos; 1288 u_int8_t dir; /* direction */ 1289 u_int8_t sidx; /* key index for source */ 1290 u_int8_t didx; /* key index for destination */ 1291}; 1292 1293/* flags for RDR options */ 1294#define PF_DPORT_RANGE 0x01 /* Dest port uses range */ 1295#define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */ 1296 1297/* Reasons code for passing/dropping a packet */ 1298#define PFRES_MATCH 0 /* Explicit match of a rule */ 1299#define PFRES_BADOFF 1 /* Bad offset for pull_hdr */ 1300#define PFRES_FRAG 2 /* Dropping following fragment */ 1301#define PFRES_SHORT 3 /* Dropping short packet */ 1302#define PFRES_NORM 4 /* Dropping by normalizer */ 1303#define PFRES_MEMORY 5 /* Dropped due to lacking mem */ 1304#define PFRES_TS 6 /* Bad TCP Timestamp (RFC1323) */ 1305#define PFRES_CONGEST 7 /* Congestion (of ipintrq) */ 1306#define PFRES_IPOPTIONS 8 /* IP option */ 1307#define PFRES_PROTCKSUM 9 /* Protocol checksum invalid */ 1308#define PFRES_BADSTATE 10 /* State mismatch */ 1309#define PFRES_STATEINS 11 /* State insertion failure */ 1310#define PFRES_MAXSTATES 12 /* State limit */ 1311#define PFRES_SRCLIMIT 13 /* Source node/conn limit */ 1312#define PFRES_SYNPROXY 14 /* SYN proxy */ 1313#define PFRES_MAX 15 /* total+1 */ 1314 1315#define PFRES_NAMES { \ 1316 "match", \ 1317 "bad-offset", \ 1318 "fragment", \ 1319 "short", \ 1320 "normalize", \ 1321 "memory", \ 1322 "bad-timestamp", \ 1323 "congestion", \ 1324 "ip-option", \ 1325 "proto-cksum", \ 1326 "state-mismatch", \ 1327 "state-insert", \ 1328 "state-limit", \ 1329 "src-limit", \ 1330 "synproxy", \ 1331 NULL \ 1332} 1333 1334/* Counters for other things we want to keep track of */ 1335#define LCNT_STATES 0 /* states */ 1336#define LCNT_SRCSTATES 1 /* max-src-states */ 1337#define LCNT_SRCNODES 2 /* max-src-nodes */ 1338#define LCNT_SRCCONN 3 /* max-src-conn */ 1339#define LCNT_SRCCONNRATE 4 /* max-src-conn-rate */ 1340#define LCNT_OVERLOAD_TABLE 5 /* entry added to overload table */ 1341#define LCNT_OVERLOAD_FLUSH 6 /* state entries flushed */ 1342#define LCNT_MAX 7 /* total+1 */ 1343 1344#define LCNT_NAMES { \ 1345 "max states per rule", \ 1346 "max-src-states", \ 1347 "max-src-nodes", \ 1348 "max-src-conn", \ 1349 "max-src-conn-rate", \ 1350 "overload table insertion", \ 1351 "overload flush states", \ 1352 NULL \ 1353} 1354 1355/* UDP state enumeration */ 1356#define PFUDPS_NO_TRAFFIC 0 1357#define PFUDPS_SINGLE 1 1358#define PFUDPS_MULTIPLE 2 1359 1360#define PFUDPS_NSTATES 3 /* number of state levels */ 1361 1362#define PFUDPS_NAMES { \ 1363 "NO_TRAFFIC", \ 1364 "SINGLE", \ 1365 "MULTIPLE", \ 1366 NULL \ 1367} 1368 1369/* Other protocol state enumeration */ 1370#define PFOTHERS_NO_TRAFFIC 0 1371#define PFOTHERS_SINGLE 1 1372#define PFOTHERS_MULTIPLE 2 1373 1374#define PFOTHERS_NSTATES 3 /* number of state levels */ 1375 1376#define PFOTHERS_NAMES { \ 1377 "NO_TRAFFIC", \ 1378 "SINGLE", \ 1379 "MULTIPLE", \ 1380 NULL \ 1381} 1382 1383#define FCNT_STATE_SEARCH 0 1384#define FCNT_STATE_INSERT 1 1385#define FCNT_STATE_REMOVALS 2 1386#define FCNT_MAX 3 1387 1388#define SCNT_SRC_NODE_SEARCH 0 1389#define SCNT_SRC_NODE_INSERT 1 1390#define SCNT_SRC_NODE_REMOVALS 2 1391#define SCNT_MAX 3 1392 1393#define ACTION_SET(a, x) \ 1394 do { \ 1395 if ((a) != NULL) \ 1396 *(a) = (x); \ 1397 } while (0) 1398 1399#ifdef __FreeBSD__ 1400#define REASON_SET(a, x) \ 1401 do { \ 1402 if ((a) != NULL) \ 1403 *(a) = (x); \ 1404 if (x < PFRES_MAX) \ 1405 V_pf_status.counters[x]++; \ 1406 } while (0) 1407#else 1408#define REASON_SET(a, x) \ 1409 do { \ 1410 if ((a) != NULL) \ 1411 *(a) = (x); \ 1412 if (x < PFRES_MAX) \ 1413 pf_status.counters[x]++; \ 1414 } while (0) 1415#endif 1416 1417struct pf_status { 1418 u_int64_t counters[PFRES_MAX]; 1419 u_int64_t lcounters[LCNT_MAX]; /* limit counters */ 1420 u_int64_t fcounters[FCNT_MAX]; 1421 u_int64_t scounters[SCNT_MAX]; 1422 u_int64_t pcounters[2][2][3]; 1423 u_int64_t bcounters[2][2]; 1424 u_int64_t stateid; 1425 u_int32_t running; 1426 u_int32_t states; 1427 u_int32_t src_nodes; 1428 u_int32_t since; 1429 u_int32_t debug; 1430 u_int32_t hostid; 1431 char ifname[IFNAMSIZ]; 1432 u_int8_t pf_chksum[PF_MD5_DIGEST_LENGTH]; 1433}; 1434 1435struct cbq_opts { 1436 u_int minburst; 1437 u_int maxburst; 1438 u_int pktsize; 1439 u_int maxpktsize; 1440 u_int ns_per_byte; 1441 u_int maxidle; 1442 int minidle; 1443 u_int offtime; 1444 int flags; 1445}; 1446 1447struct priq_opts { 1448 int flags; 1449}; 1450 1451struct hfsc_opts { 1452 /* real-time service curve */ 1453 u_int rtsc_m1; /* slope of the 1st segment in bps */ 1454 u_int rtsc_d; /* the x-projection of m1 in msec */ 1455 u_int rtsc_m2; /* slope of the 2nd segment in bps */ 1456 /* link-sharing service curve */ 1457 u_int lssc_m1; 1458 u_int lssc_d; 1459 u_int lssc_m2; 1460 /* upper-limit service curve */ 1461 u_int ulsc_m1; 1462 u_int ulsc_d; 1463 u_int ulsc_m2; 1464 int flags; 1465}; 1466 1467struct pf_altq { 1468 char ifname[IFNAMSIZ]; 1469 1470 void *altq_disc; /* discipline-specific state */ 1471 TAILQ_ENTRY(pf_altq) entries; 1472 1473 /* scheduler spec */ 1474 u_int8_t scheduler; /* scheduler type */ 1475 u_int16_t tbrsize; /* tokenbucket regulator size */ 1476 u_int32_t ifbandwidth; /* interface bandwidth */ 1477 1478 /* queue spec */ 1479 char qname[PF_QNAME_SIZE]; /* queue name */ 1480 char parent[PF_QNAME_SIZE]; /* parent name */ 1481 u_int32_t parent_qid; /* parent queue id */ 1482 u_int32_t bandwidth; /* queue bandwidth */ 1483 u_int8_t priority; /* priority */ 1484#ifdef __FreeBSD__ 1485 u_int8_t local_flags; /* dynamic interface */ 1486#define PFALTQ_FLAG_IF_REMOVED 0x01 1487#endif 1488 u_int16_t qlimit; /* queue size limit */ 1489 u_int16_t flags; /* misc flags */ 1490 union { 1491 struct cbq_opts cbq_opts; 1492 struct priq_opts priq_opts; 1493 struct hfsc_opts hfsc_opts; 1494 } pq_u; 1495 1496 u_int32_t qid; /* return value */ 1497}; 1498 1499struct pf_tagname { 1500 TAILQ_ENTRY(pf_tagname) entries; 1501 char name[PF_TAG_NAME_SIZE]; 1502 u_int16_t tag; 1503 int ref; 1504}; 1505 1506struct pf_divert { 1507 union { 1508 struct in_addr ipv4; 1509 struct in6_addr ipv6; 1510 } addr; 1511 u_int16_t port; 1512}; 1513 1514#define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */ 1515#define PFFRAG_FRAG_HIWAT 1000 /* Number of fragmented packets */ 1516#define PFFRAG_FRCENT_HIWAT 50000 /* Number of fragment cache entries */ 1517#define PFFRAG_FRCACHE_HIWAT 10000 /* Number of fragment descriptors */ 1518 1519#define PFR_KTABLE_HIWAT 1000 /* Number of tables */ 1520#define PFR_KENTRY_HIWAT 200000 /* Number of table entries */ 1521#define PFR_KENTRY_HIWAT_SMALL 100000 /* Number of table entries (tiny hosts) */ 1522 1523/* 1524 * ioctl parameter structures 1525 */ 1526 1527struct pfioc_pooladdr { 1528 u_int32_t action; 1529 u_int32_t ticket; 1530 u_int32_t nr; 1531 u_int32_t r_num; 1532 u_int8_t r_action; 1533 u_int8_t r_last; 1534 u_int8_t af; 1535 char anchor[MAXPATHLEN]; 1536 struct pf_pooladdr addr; 1537}; 1538 1539struct pfioc_rule { 1540 u_int32_t action; 1541 u_int32_t ticket; 1542 u_int32_t pool_ticket; 1543 u_int32_t nr; 1544 char anchor[MAXPATHLEN]; 1545 char anchor_call[MAXPATHLEN]; 1546 struct pf_rule rule; 1547}; 1548 1549struct pfioc_natlook { 1550 struct pf_addr saddr; 1551 struct pf_addr daddr; 1552 struct pf_addr rsaddr; 1553 struct pf_addr rdaddr; 1554 u_int16_t sport; 1555 u_int16_t dport; 1556 u_int16_t rsport; 1557 u_int16_t rdport; 1558 sa_family_t af; 1559 u_int8_t proto; 1560 u_int8_t direction; 1561}; 1562 1563struct pfioc_state { 1564 struct pfsync_state state; 1565}; 1566 1567struct pfioc_src_node_kill { 1568 sa_family_t psnk_af; 1569 struct pf_rule_addr psnk_src; 1570 struct pf_rule_addr psnk_dst; 1571 u_int psnk_killed; 1572}; 1573 1574struct pfioc_state_kill { 1575 struct pf_state_cmp psk_pfcmp; 1576 sa_family_t psk_af; 1577 int psk_proto; 1578 struct pf_rule_addr psk_src; 1579 struct pf_rule_addr psk_dst; 1580 char psk_ifname[IFNAMSIZ]; 1581 char psk_label[PF_RULE_LABEL_SIZE]; 1582 u_int psk_killed; 1583}; 1584 1585struct pfioc_states { 1586 int ps_len; 1587 union { 1588 caddr_t psu_buf; 1589 struct pfsync_state *psu_states; 1590 } ps_u; 1591#define ps_buf ps_u.psu_buf 1592#define ps_states ps_u.psu_states 1593}; 1594 1595struct pfioc_src_nodes { 1596 int psn_len; 1597 union { 1598 caddr_t psu_buf; 1599 struct pf_src_node *psu_src_nodes; 1600 } psn_u; 1601#define psn_buf psn_u.psu_buf 1602#define psn_src_nodes psn_u.psu_src_nodes 1603}; 1604 1605struct pfioc_if { 1606 char ifname[IFNAMSIZ]; 1607}; 1608 1609struct pfioc_tm { 1610 int timeout; 1611 int seconds; 1612}; 1613 1614struct pfioc_limit { 1615 int index; 1616 unsigned limit; 1617}; 1618 1619struct pfioc_altq { 1620 u_int32_t action; 1621 u_int32_t ticket; 1622 u_int32_t nr; 1623 struct pf_altq altq; 1624}; 1625 1626struct pfioc_qstats { 1627 u_int32_t ticket; 1628 u_int32_t nr; 1629 void *buf; 1630 int nbytes; 1631 u_int8_t scheduler; 1632}; 1633 1634struct pfioc_ruleset { 1635 u_int32_t nr; 1636 char path[MAXPATHLEN]; 1637 char name[PF_ANCHOR_NAME_SIZE]; 1638}; 1639 1640#define PF_RULESET_ALTQ (PF_RULESET_MAX) 1641#define PF_RULESET_TABLE (PF_RULESET_MAX+1) 1642struct pfioc_trans { 1643 int size; /* number of elements */ 1644 int esize; /* size of each element in bytes */ 1645 struct pfioc_trans_e { 1646 int rs_num; 1647 char anchor[MAXPATHLEN]; 1648 u_int32_t ticket; 1649 } *array; 1650}; 1651 1652#define PFR_FLAG_ATOMIC 0x00000001 1653#define PFR_FLAG_DUMMY 0x00000002 1654#define PFR_FLAG_FEEDBACK 0x00000004 1655#define PFR_FLAG_CLSTATS 0x00000008 1656#define PFR_FLAG_ADDRSTOO 0x00000010 1657#define PFR_FLAG_REPLACE 0x00000020 1658#define PFR_FLAG_ALLRSETS 0x00000040 1659#define PFR_FLAG_ALLMASK 0x0000007F 1660#ifdef _KERNEL 1661#define PFR_FLAG_USERIOCTL 0x10000000 1662#endif 1663 1664struct pfioc_table { 1665 struct pfr_table pfrio_table; 1666 void *pfrio_buffer; 1667 int pfrio_esize; 1668 int pfrio_size; 1669 int pfrio_size2; 1670 int pfrio_nadd; 1671 int pfrio_ndel; 1672 int pfrio_nchange; 1673 int pfrio_flags; 1674 u_int32_t pfrio_ticket; 1675}; 1676#define pfrio_exists pfrio_nadd 1677#define pfrio_nzero pfrio_nadd 1678#define pfrio_nmatch pfrio_nadd 1679#define pfrio_naddr pfrio_size2 1680#define pfrio_setflag pfrio_size2 1681#define pfrio_clrflag pfrio_nadd 1682 1683struct pfioc_iface { 1684 char pfiio_name[IFNAMSIZ]; 1685 void *pfiio_buffer; 1686 int pfiio_esize; 1687 int pfiio_size; 1688 int pfiio_nzero; 1689 int pfiio_flags; 1690}; 1691 1692 1693/* 1694 * ioctl operations 1695 */ 1696 1697#define DIOCSTART _IO ('D', 1) 1698#define DIOCSTOP _IO ('D', 2) 1699#define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule) 1700#define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule) 1701#define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule) 1702/* XXX cut 8 - 17 */ 1703#define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill) 1704#define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state) 1705#define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if) 1706#define DIOCGETSTATUS _IOWR('D', 21, struct pf_status) 1707#define DIOCCLRSTATUS _IO ('D', 22) 1708#define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook) 1709#define DIOCSETDEBUG _IOWR('D', 24, u_int32_t) 1710#define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states) 1711#define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule) 1712/* XXX cut 26 - 28 */ 1713#define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm) 1714#define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm) 1715#define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state) 1716#define DIOCCLRRULECTRS _IO ('D', 38) 1717#define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit) 1718#define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit) 1719#define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill) 1720#define DIOCSTARTALTQ _IO ('D', 42) 1721#define DIOCSTOPALTQ _IO ('D', 43) 1722#define DIOCADDALTQ _IOWR('D', 45, struct pfioc_altq) 1723#define DIOCGETALTQS _IOWR('D', 47, struct pfioc_altq) 1724#define DIOCGETALTQ _IOWR('D', 48, struct pfioc_altq) 1725#define DIOCCHANGEALTQ _IOWR('D', 49, struct pfioc_altq) 1726#define DIOCGETQSTATS _IOWR('D', 50, struct pfioc_qstats) 1727#define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr) 1728#define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr) 1729#define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr) 1730#define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr) 1731#define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr) 1732/* XXX cut 55 - 57 */ 1733#define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset) 1734#define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset) 1735#define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table) 1736#define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table) 1737#define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table) 1738#define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table) 1739#define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table) 1740#define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table) 1741#define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table) 1742#define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table) 1743#define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table) 1744#define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table) 1745#define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table) 1746#define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table) 1747#define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table) 1748#define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table) 1749#define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table) 1750#define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table) 1751#define DIOCOSFPFLUSH _IO('D', 78) 1752#define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl) 1753#define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl) 1754#define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans) 1755#define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans) 1756#define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans) 1757#define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes) 1758#define DIOCCLRSRCNODES _IO('D', 85) 1759#define DIOCSETHOSTID _IOWR('D', 86, u_int32_t) 1760#define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface) 1761#define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface) 1762#define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface) 1763#define DIOCKILLSRCNODES _IOWR('D', 91, struct pfioc_src_node_kill) 1764#ifdef __FreeBSD__ 1765struct pf_ifspeed { 1766 char ifname[IFNAMSIZ]; 1767 u_int32_t baudrate; 1768}; 1769#define DIOCGIFSPEED _IOWR('D', 92, struct pf_ifspeed) 1770#endif 1771 1772#ifdef _KERNEL 1773RB_HEAD(pf_src_tree, pf_src_node); 1774RB_PROTOTYPE(pf_src_tree, pf_src_node, entry, pf_src_compare); 1775#ifdef __FreeBSD__ 1776VNET_DECLARE(struct pf_src_tree, tree_src_tracking); 1777#define V_tree_src_tracking VNET(tree_src_tracking) 1778#else 1779extern struct pf_src_tree tree_src_tracking; 1780#endif 1781 1782RB_HEAD(pf_state_tree_id, pf_state); 1783RB_PROTOTYPE(pf_state_tree_id, pf_state, 1784 entry_id, pf_state_compare_id); 1785#ifdef __FreeBSD__ 1786VNET_DECLARE(struct pf_state_tree_id, tree_id); 1787#define V_tree_id VNET(tree_id) 1788VNET_DECLARE(struct pf_state_queue, state_list); 1789#define V_state_list VNET(state_list) 1790#else 1791extern struct pf_state_tree_id tree_id; 1792extern struct pf_state_queue state_list; 1793#endif 1794 1795TAILQ_HEAD(pf_poolqueue, pf_pool); 1796#ifdef __FreeBSD__ 1797VNET_DECLARE(struct pf_poolqueue, pf_pools[2]); 1798#define V_pf_pools VNET(pf_pools) 1799#else 1800extern struct pf_poolqueue pf_pools[2]; 1801#endif 1802TAILQ_HEAD(pf_altqqueue, pf_altq); 1803#ifdef __FreeBSD__ 1804VNET_DECLARE(struct pf_altqqueue, pf_altqs[2]); 1805#define V_pf_altqs VNET(pf_altqs) 1806VNET_DECLARE(struct pf_palist, pf_pabuf); 1807#define V_pf_pabuf VNET(pf_pabuf) 1808#else 1809extern struct pf_altqqueue pf_altqs[2]; 1810extern struct pf_palist pf_pabuf; 1811#endif 1812 1813#ifdef __FreeBSD__ 1814VNET_DECLARE(u_int32_t, ticket_altqs_active); 1815#define V_ticket_altqs_active VNET(ticket_altqs_active) 1816VNET_DECLARE(u_int32_t, ticket_altqs_inactive); 1817#define V_ticket_altqs_inactive VNET(ticket_altqs_inactive) 1818VNET_DECLARE(int, altqs_inactive_open); 1819#define V_altqs_inactive_open VNET(altqs_inactive_open) 1820VNET_DECLARE(u_int32_t, ticket_pabuf); 1821#define V_ticket_pabuf VNET(ticket_pabuf) 1822VNET_DECLARE(struct pf_altqqueue *, pf_altqs_active); 1823#define V_pf_altqs_active VNET(pf_altqs_active) 1824VNET_DECLARE(struct pf_altqqueue *, pf_altqs_inactive); 1825#define V_pf_altqs_inactive VNET(pf_altqs_inactive) 1826VNET_DECLARE(struct pf_poolqueue *, pf_pools_active); 1827#define V_pf_pools_active VNET(pf_pools_active) 1828VNET_DECLARE(struct pf_poolqueue *, pf_pools_inactive); 1829#define V_pf_pools_inactive VNET(pf_pools_inactive) 1830#else 1831extern u_int32_t ticket_altqs_active; 1832extern u_int32_t ticket_altqs_inactive; 1833extern int altqs_inactive_open; 1834extern u_int32_t ticket_pabuf; 1835extern struct pf_altqqueue *pf_altqs_active; 1836extern struct pf_altqqueue *pf_altqs_inactive; 1837extern struct pf_poolqueue *pf_pools_active; 1838extern struct pf_poolqueue *pf_pools_inactive; 1839#endif 1840extern int pf_tbladdr_setup(struct pf_ruleset *, 1841 struct pf_addr_wrap *); 1842extern void pf_tbladdr_remove(struct pf_addr_wrap *); 1843extern void pf_tbladdr_copyout(struct pf_addr_wrap *); 1844extern void pf_calc_skip_steps(struct pf_rulequeue *); 1845#ifdef __FreeBSD__ 1846#ifdef ALTQ 1847extern void pf_altq_ifnet_event(struct ifnet *, int); 1848#endif 1849VNET_DECLARE(uma_zone_t, pf_src_tree_pl); 1850#define V_pf_src_tree_pl VNET(pf_src_tree_pl) 1851VNET_DECLARE(uma_zone_t, pf_rule_pl); 1852#define V_pf_rule_pl VNET(pf_rule_pl) 1853VNET_DECLARE(uma_zone_t, pf_state_pl); 1854#define V_pf_state_pl VNET(pf_state_pl) 1855VNET_DECLARE(uma_zone_t, pf_state_key_pl); 1856#define V_pf_state_key_pl VNET(pf_state_key_pl) 1857VNET_DECLARE(uma_zone_t, pf_state_item_pl); 1858#define V_pf_state_item_pl VNET(pf_state_item_pl) 1859VNET_DECLARE(uma_zone_t, pf_altq_pl); 1860#define V_pf_altq_pl VNET(pf_altq_pl) 1861VNET_DECLARE(uma_zone_t, pf_pooladdr_pl); 1862#define V_pf_pooladdr_pl VNET(pf_pooladdr_pl) 1863VNET_DECLARE(uma_zone_t, pfr_ktable_pl); 1864#define V_pfr_ktable_pl VNET(pfr_ktable_pl) 1865VNET_DECLARE(uma_zone_t, pfr_kentry_pl); 1866#define V_pfr_kentry_pl VNET(pfr_kentry_pl) 1867VNET_DECLARE(uma_zone_t, pf_cache_pl); 1868#define V_pf_cache_pl VNET(pf_cache_pl) 1869VNET_DECLARE(uma_zone_t, pf_cent_pl); 1870#define V_pf_cent_pl VNET(pf_cent_pl) 1871VNET_DECLARE(uma_zone_t, pf_state_scrub_pl); 1872#define V_pf_state_scrub_pl VNET(pf_state_scrub_pl) 1873VNET_DECLARE(uma_zone_t, pfi_addr_pl); 1874#define V_pfi_addr_pl VNET(pfi_addr_pl) 1875#else 1876extern struct pool pf_src_tree_pl, pf_rule_pl; 1877extern struct pool pf_state_pl, pf_state_key_pl, pf_state_item_pl, 1878 pf_altq_pl, pf_pooladdr_pl; 1879extern struct pool pf_state_scrub_pl; 1880#endif 1881extern void pf_purge_thread(void *); 1882#ifdef __FreeBSD__ 1883extern int pf_purge_expired_src_nodes(int); 1884extern int pf_purge_expired_states(u_int32_t , int); 1885#else 1886extern void pf_purge_expired_src_nodes(int); 1887extern void pf_purge_expired_states(u_int32_t); 1888#endif 1889extern void pf_unlink_state(struct pf_state *); 1890extern void pf_free_state(struct pf_state *); 1891extern int pf_state_insert(struct pfi_kif *, 1892 struct pf_state_key *, 1893 struct pf_state_key *, 1894 struct pf_state *); 1895extern int pf_insert_src_node(struct pf_src_node **, 1896 struct pf_rule *, struct pf_addr *, 1897 sa_family_t); 1898void pf_src_tree_remove_state(struct pf_state *); 1899extern struct pf_state *pf_find_state_byid(struct pf_state_cmp *); 1900extern struct pf_state *pf_find_state_all(struct pf_state_key_cmp *, 1901 u_int, int *); 1902extern void pf_print_state(struct pf_state *); 1903extern void pf_print_flags(u_int8_t); 1904extern u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t, 1905 u_int8_t); 1906 1907#ifdef __FreeBSD__ 1908VNET_DECLARE(struct ifnet *, sync_ifp); 1909#define V_sync_ifp VNET(sync_ifp); 1910VNET_DECLARE(struct pf_rule, pf_default_rule); 1911#define V_pf_default_rule VNET(pf_default_rule) 1912#else 1913extern struct ifnet *sync_ifp; 1914extern struct pf_rule pf_default_rule; 1915#endif 1916extern void pf_addrcpy(struct pf_addr *, struct pf_addr *, 1917 u_int8_t); 1918void pf_rm_rule(struct pf_rulequeue *, 1919 struct pf_rule *); 1920#ifndef __FreeBSD__ 1921struct pf_divert *pf_find_divert(struct mbuf *); 1922#endif 1923 1924#ifdef INET 1925#ifdef __FreeBSD__ 1926int pf_test(int, struct ifnet *, struct mbuf **, struct ether_header *, 1927 struct inpcb *); 1928#else 1929int pf_test(int, struct ifnet *, struct mbuf **, struct ether_header *); 1930#endif 1931#endif /* INET */ 1932 1933#ifdef INET6 1934#ifdef __FreeBSD__ 1935int pf_test6(int, struct ifnet *, struct mbuf **, struct ether_header *, 1936 struct inpcb *); 1937#else 1938int pf_test6(int, struct ifnet *, struct mbuf **, struct ether_header *); 1939#endif 1940void pf_poolmask(struct pf_addr *, struct pf_addr*, 1941 struct pf_addr *, struct pf_addr *, u_int8_t); 1942void pf_addr_inc(struct pf_addr *, sa_family_t); 1943#endif /* INET6 */ 1944 1945#ifdef __FreeBSD__ 1946u_int32_t pf_new_isn(struct pf_state *); 1947#endif 1948void *pf_pull_hdr(struct mbuf *, int, void *, int, u_short *, u_short *, 1949 sa_family_t); 1950void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t); 1951int pflog_packet(struct pfi_kif *, struct mbuf *, sa_family_t, u_int8_t, 1952 u_int8_t, struct pf_rule *, struct pf_rule *, struct pf_ruleset *, 1953 struct pf_pdesc *); 1954void pf_send_deferred_syn(struct pf_state *); 1955int pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *, 1956 struct pf_addr *, sa_family_t); 1957int pf_match_addr_range(struct pf_addr *, struct pf_addr *, 1958 struct pf_addr *, sa_family_t); 1959int pf_match(u_int8_t, u_int32_t, u_int32_t, u_int32_t); 1960int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t); 1961int pf_match_uid(u_int8_t, uid_t, uid_t, uid_t); 1962int pf_match_gid(u_int8_t, gid_t, gid_t, gid_t); 1963 1964void pf_normalize_init(void); 1965int pf_normalize_ip(struct mbuf **, int, struct pfi_kif *, u_short *, 1966 struct pf_pdesc *); 1967int pf_normalize_ip6(struct mbuf **, int, struct pfi_kif *, u_short *, 1968 struct pf_pdesc *); 1969int pf_normalize_tcp(int, struct pfi_kif *, struct mbuf *, int, int, void *, 1970 struct pf_pdesc *); 1971void pf_normalize_tcp_cleanup(struct pf_state *); 1972int pf_normalize_tcp_init(struct mbuf *, int, struct pf_pdesc *, 1973 struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *); 1974int pf_normalize_tcp_stateful(struct mbuf *, int, struct pf_pdesc *, 1975 u_short *, struct tcphdr *, struct pf_state *, 1976 struct pf_state_peer *, struct pf_state_peer *, int *); 1977u_int32_t 1978 pf_state_expires(const struct pf_state *); 1979void pf_purge_expired_fragments(void); 1980int pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kif *); 1981int pf_rtlabel_match(struct pf_addr *, sa_family_t, struct pf_addr_wrap *); 1982#ifdef __FreeBSD__ 1983int pf_socket_lookup(int, struct pf_pdesc *, struct inpcb *); 1984#else 1985int pf_socket_lookup(int, struct pf_pdesc *); 1986#endif 1987struct pf_state_key *pf_alloc_state_key(int); 1988void pf_pkt_addr_changed(struct mbuf *); 1989int pf_state_key_attach(struct pf_state_key *, struct pf_state *, int); 1990void pfr_initialize(void); 1991int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t); 1992void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t, 1993 u_int64_t, int, int, int); 1994int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, 1995 struct pf_addr **, struct pf_addr **, sa_family_t); 1996void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *); 1997struct pfr_ktable * 1998 pfr_attach_table(struct pf_ruleset *, char *, int); 1999void pfr_detach_table(struct pfr_ktable *); 2000int pfr_clr_tables(struct pfr_table *, int *, int); 2001int pfr_add_tables(struct pfr_table *, int, int *, int); 2002int pfr_del_tables(struct pfr_table *, int, int *, int); 2003int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int); 2004int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int); 2005int pfr_clr_tstats(struct pfr_table *, int, int *, int); 2006int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int); 2007int pfr_clr_addrs(struct pfr_table *, int *, int); 2008int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *, long); 2009int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 2010 int); 2011int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 2012 int); 2013int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 2014 int *, int *, int *, int, u_int32_t); 2015int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int); 2016int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int); 2017int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *, 2018 int); 2019int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 2020 int); 2021int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int); 2022int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int); 2023int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int); 2024int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *, 2025 int *, u_int32_t, int); 2026 2027#ifdef __FreeBSD__ 2028VNET_DECLARE(struct pfi_kif *, pfi_all); 2029#define V_pfi_all VNET(pfi_all) 2030#else 2031extern struct pfi_kif *pfi_all; 2032#endif 2033 2034void pfi_initialize(void); 2035#ifdef __FreeBSD__ 2036void pfi_cleanup(void); 2037#endif 2038struct pfi_kif *pfi_kif_get(const char *); 2039void pfi_kif_ref(struct pfi_kif *, enum pfi_kif_refs); 2040void pfi_kif_unref(struct pfi_kif *, enum pfi_kif_refs); 2041int pfi_kif_match(struct pfi_kif *, struct pfi_kif *); 2042void pfi_attach_ifnet(struct ifnet *); 2043void pfi_detach_ifnet(struct ifnet *); 2044void pfi_attach_ifgroup(struct ifg_group *); 2045void pfi_detach_ifgroup(struct ifg_group *); 2046void pfi_group_change(const char *); 2047int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *, 2048 sa_family_t); 2049int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t); 2050void pfi_dynaddr_remove(struct pf_addr_wrap *); 2051void pfi_dynaddr_copyout(struct pf_addr_wrap *); 2052void pfi_update_status(const char *, struct pf_status *); 2053int pfi_get_ifaces(const char *, struct pfi_kif *, int *); 2054int pfi_set_flags(const char *, int); 2055int pfi_clear_flags(const char *, int); 2056 2057#ifdef __FreeBSD__ 2058int pf_match_tag(struct mbuf *, struct pf_rule *, int *, 2059 struct pf_mtag *); 2060#else 2061int pf_match_tag(struct mbuf *, struct pf_rule *, int *); 2062#endif 2063u_int16_t pf_tagname2tag(char *); 2064void pf_tag2tagname(u_int16_t, char *); 2065void pf_tag_ref(u_int16_t); 2066void pf_tag_unref(u_int16_t); 2067#ifdef __FreeBSD__ 2068int pf_tag_packet(struct mbuf *, int, int, struct pf_mtag *); 2069#else 2070int pf_tag_packet(struct mbuf *, int, int); 2071#endif 2072u_int32_t pf_qname2qid(char *); 2073void pf_qid2qname(u_int32_t, char *); 2074void pf_qid_unref(u_int32_t); 2075 2076#ifdef __FreeBSD__ 2077VNET_DECLARE(struct pf_status, pf_status); 2078#define V_pf_status VNET(pf_status) 2079#else 2080extern struct pf_status pf_status; 2081#endif 2082 2083#ifdef __FreeBSD__ 2084VNET_DECLARE(uma_zone_t, pf_frent_pl); 2085#define V_pf_frent_pl VNET(pf_frent_pl) 2086VNET_DECLARE(uma_zone_t, pf_frag_pl); 2087#define V_pf_frag_pl VNET(pf_frag_pl) 2088VNET_DECLARE(struct sx, pf_consistency_lock); 2089#define V_pf_consistency_lock VNET(pf_consistency_lock) 2090#else 2091extern struct pool pf_frent_pl, pf_frag_pl; 2092extern struct rwlock pf_consistency_lock; 2093#endif 2094 2095struct pf_pool_limit { 2096 void *pp; 2097 unsigned limit; 2098}; 2099#ifdef __FreeBSD__ 2100VNET_DECLARE(struct pf_pool_limit, pf_pool_limits[PF_LIMIT_MAX]); 2101#define V_pf_pool_limits VNET(pf_pool_limits) 2102#else 2103extern struct pf_pool_limit pf_pool_limits[PF_LIMIT_MAX]; 2104#endif 2105 2106#ifdef __FreeBSD__ 2107struct pf_frent { 2108 LIST_ENTRY(pf_frent) fr_next; 2109 struct ip *fr_ip; 2110 struct mbuf *fr_m; 2111}; 2112 2113struct pf_frcache { 2114 LIST_ENTRY(pf_frcache) fr_next; 2115 uint16_t fr_off; 2116 uint16_t fr_end; 2117}; 2118 2119struct pf_fragment { 2120 RB_ENTRY(pf_fragment) fr_entry; 2121 TAILQ_ENTRY(pf_fragment) frag_next; 2122 struct in_addr fr_src; 2123 struct in_addr fr_dst; 2124 u_int8_t fr_p; /* protocol of this fragment */ 2125 u_int8_t fr_flags; /* status flags */ 2126 u_int16_t fr_id; /* fragment id for reassemble */ 2127 u_int16_t fr_max; /* fragment data max */ 2128 u_int32_t fr_timeout; 2129#define fr_queue fr_u.fru_queue 2130#define fr_cache fr_u.fru_cache 2131 union { 2132 LIST_HEAD(pf_fragq, pf_frent) fru_queue; /* buffering */ 2133 LIST_HEAD(pf_cacheq, pf_frcache) fru_cache; /* non-buf */ 2134 } fr_u; 2135}; 2136#endif /* (__FreeBSD__) */ 2137 2138#endif /* _KERNEL */ 2139 2140#ifdef __FreeBSD__ 2141#ifdef _KERNEL 2142VNET_DECLARE(struct pf_anchor_global, pf_anchors); 2143#define V_pf_anchors VNET(pf_anchors) 2144VNET_DECLARE(struct pf_anchor, pf_main_anchor); 2145#define V_pf_main_anchor VNET(pf_main_anchor) 2146#define pf_main_ruleset V_pf_main_anchor.ruleset 2147#endif 2148#else 2149extern struct pf_anchor_global pf_anchors; 2150extern struct pf_anchor pf_main_anchor; 2151#define pf_main_ruleset pf_main_anchor.ruleset 2152#endif 2153 2154/* these ruleset functions can be linked into userland programs (pfctl) */ 2155int pf_get_ruleset_number(u_int8_t); 2156void pf_init_ruleset(struct pf_ruleset *); 2157int pf_anchor_setup(struct pf_rule *, 2158 const struct pf_ruleset *, const char *); 2159int pf_anchor_copyout(const struct pf_ruleset *, 2160 const struct pf_rule *, struct pfioc_rule *); 2161void pf_anchor_remove(struct pf_rule *); 2162void pf_remove_if_empty_ruleset(struct pf_ruleset *); 2163struct pf_anchor *pf_find_anchor(const char *); 2164struct pf_ruleset *pf_find_ruleset(const char *); 2165struct pf_ruleset *pf_find_or_create_ruleset(const char *); 2166void pf_rs_initialize(void); 2167 2168#ifndef __FreeBSD__ 2169#ifdef _KERNEL 2170int pf_anchor_copyout(const struct pf_ruleset *, 2171 const struct pf_rule *, struct pfioc_rule *); 2172void pf_anchor_remove(struct pf_rule *); 2173 2174#endif /* _KERNEL */ 2175#endif 2176 2177/* The fingerprint functions can be linked into userland programs (tcpdump) */ 2178int pf_osfp_add(struct pf_osfp_ioctl *); 2179#ifdef _KERNEL 2180struct pf_osfp_enlist * 2181 pf_osfp_fingerprint(struct pf_pdesc *, struct mbuf *, int, 2182 const struct tcphdr *); 2183#endif /* _KERNEL */ 2184struct pf_osfp_enlist * 2185 pf_osfp_fingerprint_hdr(const struct ip *, const struct ip6_hdr *, 2186 const struct tcphdr *); 2187void pf_osfp_flush(void); 2188int pf_osfp_get(struct pf_osfp_ioctl *); 2189#ifdef __FreeBSD__ 2190int pf_osfp_initialize(void); 2191void pf_osfp_cleanup(void); 2192#else 2193void pf_osfp_initialize(void); 2194#endif 2195int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t); 2196struct pf_os_fingerprint * 2197 pf_osfp_validate(void); 2198 2199#ifdef _KERNEL 2200void pf_print_host(struct pf_addr *, u_int16_t, u_int8_t); 2201 2202void pf_step_into_anchor(int *, struct pf_ruleset **, int, 2203 struct pf_rule **, struct pf_rule **, int *); 2204int pf_step_out_of_anchor(int *, struct pf_ruleset **, 2205 int, struct pf_rule **, struct pf_rule **, 2206 int *); 2207 2208int pf_map_addr(u_int8_t, struct pf_rule *, 2209 struct pf_addr *, struct pf_addr *, 2210 struct pf_addr *, struct pf_src_node **); 2211struct pf_rule *pf_get_translation(struct pf_pdesc *, struct mbuf *, 2212 int, int, struct pfi_kif *, struct pf_src_node **, 2213 struct pf_state_key **, struct pf_state_key **, 2214 struct pf_state_key **, struct pf_state_key **, 2215 struct pf_addr *, struct pf_addr *, 2216 u_int16_t, u_int16_t); 2217 2218int pf_state_key_setup(struct pf_pdesc *, struct pf_rule *, 2219 struct pf_state_key **, struct pf_state_key **, 2220 struct pf_state_key **, struct pf_state_key **, 2221 struct pf_addr *, struct pf_addr *, 2222 u_int16_t, u_int16_t); 2223#endif /* _KERNEL */ 2224 2225 2226#endif /* _NET_PFVAR_H_ */ 2227