pfvar.h revision 171168
1223013Sdim/* $FreeBSD: head/sys/contrib/pf/net/pfvar.h 171168 2007-07-03 12:16:07Z mlaier $ */ 2223013Sdim/* $OpenBSD: pfvar.h,v 1.244 2007/02/23 21:31:51 deraadt Exp $ */ 3223013Sdim 4223013Sdim/* 5223013Sdim * Copyright (c) 2001 Daniel Hartmeier 6223013Sdim * All rights reserved. 7223013Sdim * 8223013Sdim * Redistribution and use in source and binary forms, with or without 9223013Sdim * modification, are permitted provided that the following conditions 10223013Sdim * are met: 11223013Sdim * 12223013Sdim * - Redistributions of source code must retain the above copyright 13223013Sdim * notice, this list of conditions and the following disclaimer. 14223013Sdim * - Redistributions in binary form must reproduce the above 15223013Sdim * copyright notice, this list of conditions and the following 16223013Sdim * disclaimer in the documentation and/or other materials provided 17223013Sdim * with the distribution. 18243830Sdim * 19223013Sdim * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 20243830Sdim * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 21234353Sdim * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 22223013Sdim * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 23223013Sdim * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 24249423Sdim * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 25223013Sdim * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 26223013Sdim * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 27223013Sdim * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28234353Sdim * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 29234353Sdim * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30234353Sdim * POSSIBILITY OF SUCH DAMAGE. 31234353Sdim * 32223013Sdim */ 33223013Sdim 34223013Sdim#ifndef _NET_PFVAR_H_ 35223013Sdim#define _NET_PFVAR_H_ 36223013Sdim 37223013Sdim#include <sys/param.h> 38223013Sdim#include <sys/types.h> 39223013Sdim#include <sys/queue.h> 40223013Sdim#include <sys/tree.h> 41223013Sdim#ifdef __FreeBSD__ 42223013Sdim#include <sys/lock.h> 43263508Sdim#include <sys/sx.h> 44263508Sdim#else 45263508Sdim#include <sys/rwlock.h> 46223013Sdim#endif 47223013Sdim 48223013Sdim#include <net/radix.h> 49223013Sdim#include <net/route.h> 50249423Sdim#ifdef __FreeBSD__ 51223013Sdim#include <net/if_clone.h> 52223013Sdim#include <net/pf_mtag.h> 53223013Sdim#include <vm/uma.h> 54223013Sdim#else 55223013Sdim#include <netinet/ip_ipsp.h> 56223013Sdim#endif 57239462Sdim 58239462Sdim#ifdef __FreeBSD__ 59223013Sdim#include <netinet/in.h> 60223013Sdim#endif 61223013Sdim 62223013Sdim#include <netinet/tcp_fsm.h> 63223013Sdim 64243830Sdimstruct ip; 65243830Sdimstruct ip6_hdr; 66223013Sdim#ifdef __FreeBSD__ 67243830Sdimstruct inpcb; 68243830Sdim#endif 69223013Sdim 70223013Sdim#define PF_TCPS_PROXY_SRC ((TCP_NSTATES)+0) 71223013Sdim#define PF_TCPS_PROXY_DST ((TCP_NSTATES)+1) 72223013Sdim 73223013Sdim#define PF_MD5_DIGEST_LENGTH 16 74223013Sdim#ifdef MD5_DIGEST_LENGTH 75223013Sdim#if PF_MD5_DIGEST_LENGTH != MD5_DIGEST_LENGTH 76223013Sdim#error 77223013Sdim#endif 78223013Sdim#endif 79223013Sdim 80223013Sdimenum { PF_INOUT, PF_IN, PF_OUT }; 81223013Sdimenum { PF_LAN_EXT, PF_EXT_GWY, PF_ID }; 82223013Sdimenum { PF_PASS, PF_DROP, PF_SCRUB, PF_NOSCRUB, PF_NAT, PF_NONAT, 83223013Sdim PF_BINAT, PF_NOBINAT, PF_RDR, PF_NORDR, PF_SYNPROXY_DROP }; 84223013Sdimenum { PF_RULESET_SCRUB, PF_RULESET_FILTER, PF_RULESET_NAT, 85249423Sdim PF_RULESET_BINAT, PF_RULESET_RDR, PF_RULESET_MAX }; 86223013Sdimenum { PF_OP_NONE, PF_OP_IRG, PF_OP_EQ, PF_OP_NE, PF_OP_LT, 87223013Sdim PF_OP_LE, PF_OP_GT, PF_OP_GE, PF_OP_XRG, PF_OP_RRG }; 88249423Sdimenum { PF_DEBUG_NONE, PF_DEBUG_URGENT, PF_DEBUG_MISC, PF_DEBUG_NOISY }; 89249423Sdimenum { PF_CHANGE_NONE, PF_CHANGE_ADD_HEAD, PF_CHANGE_ADD_TAIL, 90249423Sdim PF_CHANGE_ADD_BEFORE, PF_CHANGE_ADD_AFTER, 91249423Sdim PF_CHANGE_REMOVE, PF_CHANGE_GET_TICKET }; 92223013Sdimenum { PF_GET_NONE, PF_GET_CLR_CNTR }; 93223013Sdim 94223013Sdim/* 95249423Sdim * Note about PFTM_*: real indices into pf_rule.timeout[] come before 96224145Sdim * PFTM_MAX, special cases afterwards. See pf_state_expires(). 97224145Sdim */ 98223013Sdimenum { PFTM_TCP_FIRST_PACKET, PFTM_TCP_OPENING, PFTM_TCP_ESTABLISHED, 99223013Sdim PFTM_TCP_CLOSING, PFTM_TCP_FIN_WAIT, PFTM_TCP_CLOSED, 100223013Sdim PFTM_UDP_FIRST_PACKET, PFTM_UDP_SINGLE, PFTM_UDP_MULTIPLE, 101249423Sdim PFTM_ICMP_FIRST_PACKET, PFTM_ICMP_ERROR_REPLY, 102249423Sdim PFTM_OTHER_FIRST_PACKET, PFTM_OTHER_SINGLE, 103249423Sdim PFTM_OTHER_MULTIPLE, PFTM_FRAG, PFTM_INTERVAL, 104223013Sdim PFTM_ADAPTIVE_START, PFTM_ADAPTIVE_END, PFTM_SRC_NODE, 105223013Sdim PFTM_TS_DIFF, PFTM_MAX, PFTM_PURGE, PFTM_UNLINKED, 106223013Sdim PFTM_UNTIL_PACKET }; 107249423Sdim 108249423Sdim/* PFTM default values */ 109249423Sdim#define PFTM_TCP_FIRST_PACKET_VAL 120 /* First TCP packet */ 110223013Sdim#define PFTM_TCP_OPENING_VAL 30 /* No response yet */ 111249423Sdim#define PFTM_TCP_ESTABLISHED_VAL 24*60*60/* Established */ 112249423Sdim#define PFTM_TCP_CLOSING_VAL 15 * 60 /* Half closed */ 113223013Sdim#define PFTM_TCP_FIN_WAIT_VAL 45 /* Got both FINs */ 114223013Sdim#define PFTM_TCP_CLOSED_VAL 90 /* Got a RST */ 115223013Sdim#define PFTM_UDP_FIRST_PACKET_VAL 60 /* First UDP packet */ 116223013Sdim#define PFTM_UDP_SINGLE_VAL 30 /* Unidirectional */ 117223013Sdim#define PFTM_UDP_MULTIPLE_VAL 60 /* Bidirectional */ 118249423Sdim#define PFTM_ICMP_FIRST_PACKET_VAL 20 /* First ICMP packet */ 119249423Sdim#define PFTM_ICMP_ERROR_REPLY_VAL 10 /* Got error response */ 120249423Sdim#define PFTM_OTHER_FIRST_PACKET_VAL 60 /* First packet */ 121249423Sdim#define PFTM_OTHER_SINGLE_VAL 30 /* Unidirectional */ 122249423Sdim#define PFTM_OTHER_MULTIPLE_VAL 60 /* Bidirectional */ 123249423Sdim#define PFTM_FRAG_VAL 30 /* Fragment expire */ 124249423Sdim#define PFTM_INTERVAL_VAL 10 /* Expire interval */ 125249423Sdim#define PFTM_SRC_NODE_VAL 0 /* Source tracking */ 126223013Sdim#define PFTM_TS_DIFF_VAL 30 /* Allowed TS diff */ 127234353Sdim 128234353Sdimenum { PF_NOPFROUTE, PF_FASTROUTE, PF_ROUTETO, PF_DUPTO, PF_REPLYTO }; 129234353Sdimenum { PF_LIMIT_STATES, PF_LIMIT_SRC_NODES, PF_LIMIT_FRAGS, 130234353Sdim PF_LIMIT_TABLES, PF_LIMIT_TABLE_ENTRIES, PF_LIMIT_MAX }; 131226633Sdim#define PF_POOL_IDMASK 0x0f 132226633Sdimenum { PF_POOL_NONE, PF_POOL_BITMASK, PF_POOL_RANDOM, 133226633Sdim PF_POOL_SRCHASH, PF_POOL_ROUNDROBIN }; 134226633Sdimenum { PF_ADDR_ADDRMASK, PF_ADDR_NOROUTE, PF_ADDR_DYNIFTL, 135226633Sdim PF_ADDR_TABLE, PF_ADDR_RTLABEL, PF_ADDR_URPFFAILED }; 136249423Sdim#define PF_POOL_TYPEMASK 0x0f 137249423Sdim#define PF_POOL_STICKYADDR 0x20 138249423Sdim#define PF_WSCALE_FLAG 0x80 139223013Sdim#define PF_WSCALE_MASK 0x0f 140223013Sdim 141224145Sdim#define PF_LOG 0x01 142223013Sdim#define PF_LOG_ALL 0x02 143226633Sdim#define PF_LOG_SOCKET_LOOKUP 0x04 144223013Sdim 145223013Sdimstruct pf_addr { 146223013Sdim union { 147223013Sdim struct in_addr v4; 148223013Sdim struct in6_addr v6; 149223013Sdim u_int8_t addr8[16]; 150263508Sdim u_int16_t addr16[8]; 151263508Sdim u_int32_t addr32[4]; 152263508Sdim } pfa; /* 128-bit address */ 153263508Sdim#define v4 pfa.v4 154263508Sdim#define v6 pfa.v6 155263508Sdim#define addr8 pfa.addr8 156263508Sdim#define addr16 pfa.addr16 157263508Sdim#define addr32 pfa.addr32 158263508Sdim}; 159263508Sdim 160263508Sdim#define PF_TABLE_NAME_SIZE 32 161263508Sdim 162263508Sdim#define PFI_AFLAG_NETWORK 0x01 163263508Sdim#define PFI_AFLAG_BROADCAST 0x02 164263508Sdim#define PFI_AFLAG_PEER 0x04 165263508Sdim#define PFI_AFLAG_MODEMASK 0x07 166263508Sdim#define PFI_AFLAG_NOALIAS 0x08 167263508Sdim 168263508Sdimstruct pf_addr_wrap { 169263508Sdim union { 170263508Sdim struct { 171263508Sdim struct pf_addr addr; 172263508Sdim struct pf_addr mask; 173263508Sdim } a; 174263508Sdim char ifname[IFNAMSIZ]; 175263508Sdim char tblname[PF_TABLE_NAME_SIZE]; 176263508Sdim#ifdef __FreeBSD__ 177263508Sdim#define RTLABEL_LEN 32 178263508Sdim#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 pool_get(p, f) uma_zalloc(*(p), (f)) 226#define pool_put(p, o) uma_zfree(*(p), (o)) 227 228#define UMA_CREATE(var, type, desc) \ 229 var = uma_zcreate(desc, sizeof(type), \ 230 NULL, NULL, NULL, NULL, UMA_ALIGN_PTR, 0); \ 231 if (var == NULL) break 232#define UMA_DESTROY(var) \ 233 if(var) uma_zdestroy(var) 234 235extern struct mtx pf_task_mtx; 236 237#define PF_ASSERT(h) mtx_assert(&pf_task_mtx, (h)) 238 239#define PF_LOCK() do { \ 240 PF_ASSERT(MA_NOTOWNED); \ 241 mtx_lock(&pf_task_mtx); \ 242} while(0) 243#define PF_UNLOCK() do { \ 244 PF_ASSERT(MA_OWNED); \ 245 mtx_unlock(&pf_task_mtx); \ 246} while(0) 247 248#define PF_COPYIN(uaddr, kaddr, len, r) do { \ 249 PF_UNLOCK(); \ 250 r = copyin((uaddr), (kaddr), (len)); \ 251 PF_LOCK(); \ 252} while(0) 253 254#define PF_COPYOUT(kaddr, uaddr, len, r) do { \ 255 PF_UNLOCK(); \ 256 r = copyout((kaddr), (uaddr), (len)); \ 257 PF_LOCK(); \ 258} while(0) 259 260extern void init_pf_mutex(void); 261extern void destroy_pf_mutex(void); 262 263#define PF_MODVER 1 264#define PFLOG_MODVER 1 265#define PFSYNC_MODVER 1 266 267#define PFLOG_MINVER 1 268#define PFLOG_PREFVER PFLOG_MODVER 269#define PFLOG_MAXVER 1 270#define PFSYNC_MINVER 1 271#define PFSYNC_PREFVER PFSYNC_MODVER 272#define PFSYNC_MAXVER 1 273#endif /* __FreeBSD__ */ 274 275#ifdef INET 276#ifndef INET6 277#define PF_INET_ONLY 278#endif /* ! INET6 */ 279#endif /* INET */ 280 281#ifdef INET6 282#ifndef INET 283#define PF_INET6_ONLY 284#endif /* ! INET */ 285#endif /* INET6 */ 286 287#ifdef INET 288#ifdef INET6 289#define PF_INET_INET6 290#endif /* INET6 */ 291#endif /* INET */ 292 293#else 294 295#define PF_INET_INET6 296 297#endif /* _KERNEL */ 298 299/* Both IPv4 and IPv6 */ 300#ifdef PF_INET_INET6 301 302#define PF_AEQ(a, b, c) \ 303 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \ 304 ((a)->addr32[3] == (b)->addr32[3] && \ 305 (a)->addr32[2] == (b)->addr32[2] && \ 306 (a)->addr32[1] == (b)->addr32[1] && \ 307 (a)->addr32[0] == (b)->addr32[0])) \ 308 309#define PF_ANEQ(a, b, c) \ 310 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \ 311 ((a)->addr32[3] != (b)->addr32[3] || \ 312 (a)->addr32[2] != (b)->addr32[2] || \ 313 (a)->addr32[1] != (b)->addr32[1] || \ 314 (a)->addr32[0] != (b)->addr32[0])) \ 315 316#define PF_AZERO(a, c) \ 317 ((c == AF_INET && !(a)->addr32[0]) || \ 318 (!(a)->addr32[0] && !(a)->addr32[1] && \ 319 !(a)->addr32[2] && !(a)->addr32[3] )) \ 320 321#define PF_MATCHA(n, a, m, b, f) \ 322 pf_match_addr(n, a, m, b, f) 323 324#define PF_ACPY(a, b, f) \ 325 pf_addrcpy(a, b, f) 326 327#define PF_AINC(a, f) \ 328 pf_addr_inc(a, f) 329 330#define PF_POOLMASK(a, b, c, d, f) \ 331 pf_poolmask(a, b, c, d, f) 332 333#else 334 335/* Just IPv6 */ 336 337#ifdef PF_INET6_ONLY 338 339#define PF_AEQ(a, b, c) \ 340 ((a)->addr32[3] == (b)->addr32[3] && \ 341 (a)->addr32[2] == (b)->addr32[2] && \ 342 (a)->addr32[1] == (b)->addr32[1] && \ 343 (a)->addr32[0] == (b)->addr32[0]) \ 344 345#define PF_ANEQ(a, b, c) \ 346 ((a)->addr32[3] != (b)->addr32[3] || \ 347 (a)->addr32[2] != (b)->addr32[2] || \ 348 (a)->addr32[1] != (b)->addr32[1] || \ 349 (a)->addr32[0] != (b)->addr32[0]) \ 350 351#define PF_AZERO(a, c) \ 352 (!(a)->addr32[0] && \ 353 !(a)->addr32[1] && \ 354 !(a)->addr32[2] && \ 355 !(a)->addr32[3] ) \ 356 357#define PF_MATCHA(n, a, m, b, f) \ 358 pf_match_addr(n, a, m, b, f) 359 360#define PF_ACPY(a, b, f) \ 361 pf_addrcpy(a, b, f) 362 363#define PF_AINC(a, f) \ 364 pf_addr_inc(a, f) 365 366#define PF_POOLMASK(a, b, c, d, f) \ 367 pf_poolmask(a, b, c, d, f) 368 369#else 370 371/* Just IPv4 */ 372#ifdef PF_INET_ONLY 373 374#define PF_AEQ(a, b, c) \ 375 ((a)->addr32[0] == (b)->addr32[0]) 376 377#define PF_ANEQ(a, b, c) \ 378 ((a)->addr32[0] != (b)->addr32[0]) 379 380#define PF_AZERO(a, c) \ 381 (!(a)->addr32[0]) 382 383#define PF_MATCHA(n, a, m, b, f) \ 384 pf_match_addr(n, a, m, b, f) 385 386#define PF_ACPY(a, b, f) \ 387 (a)->v4.s_addr = (b)->v4.s_addr 388 389#define PF_AINC(a, f) \ 390 do { \ 391 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \ 392 } while (0) 393 394#define PF_POOLMASK(a, b, c, d, f) \ 395 do { \ 396 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \ 397 (((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \ 398 } while (0) 399 400#endif /* PF_INET_ONLY */ 401#endif /* PF_INET6_ONLY */ 402#endif /* PF_INET_INET6 */ 403 404#define PF_MISMATCHAW(aw, x, af, neg, ifp) \ 405 ( \ 406 (((aw)->type == PF_ADDR_NOROUTE && \ 407 pf_routable((x), (af), NULL)) || \ 408 (((aw)->type == PF_ADDR_URPFFAILED && (ifp) != NULL && \ 409 pf_routable((x), (af), (ifp))) || \ 410 ((aw)->type == PF_ADDR_RTLABEL && \ 411 !pf_rtlabel_match((x), (af), (aw))) || \ 412 ((aw)->type == PF_ADDR_TABLE && \ 413 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \ 414 ((aw)->type == PF_ADDR_DYNIFTL && \ 415 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \ 416 ((aw)->type == PF_ADDR_ADDRMASK && \ 417 !PF_AZERO(&(aw)->v.a.mask, (af)) && \ 418 !PF_MATCHA(0, &(aw)->v.a.addr, \ 419 &(aw)->v.a.mask, (x), (af))))) != \ 420 (neg) \ 421 ) 422 423 424struct pf_rule_uid { 425 uid_t uid[2]; 426 u_int8_t op; 427}; 428 429struct pf_rule_gid { 430 uid_t gid[2]; 431 u_int8_t op; 432}; 433 434struct pf_rule_addr { 435 struct pf_addr_wrap addr; 436 u_int16_t port[2]; 437 u_int8_t neg; 438 u_int8_t port_op; 439}; 440 441struct pf_pooladdr { 442 struct pf_addr_wrap addr; 443 TAILQ_ENTRY(pf_pooladdr) entries; 444 char ifname[IFNAMSIZ]; 445 struct pfi_kif *kif; 446}; 447 448TAILQ_HEAD(pf_palist, pf_pooladdr); 449 450struct pf_poolhashkey { 451 union { 452 u_int8_t key8[16]; 453 u_int16_t key16[8]; 454 u_int32_t key32[4]; 455 } pfk; /* 128-bit hash key */ 456#define key8 pfk.key8 457#define key16 pfk.key16 458#define key32 pfk.key32 459}; 460 461struct pf_pool { 462 struct pf_palist list; 463 struct pf_pooladdr *cur; 464 struct pf_poolhashkey key; 465 struct pf_addr counter; 466 int tblidx; 467 u_int16_t proxy_port[2]; 468 u_int8_t port_op; 469 u_int8_t opts; 470}; 471 472 473/* A packed Operating System description for fingerprinting */ 474typedef u_int32_t pf_osfp_t; 475#define PF_OSFP_ANY ((pf_osfp_t)0) 476#define PF_OSFP_UNKNOWN ((pf_osfp_t)-1) 477#define PF_OSFP_NOMATCH ((pf_osfp_t)-2) 478 479struct pf_osfp_entry { 480 SLIST_ENTRY(pf_osfp_entry) fp_entry; 481 pf_osfp_t fp_os; 482 int fp_enflags; 483#define PF_OSFP_EXPANDED 0x001 /* expanded entry */ 484#define PF_OSFP_GENERIC 0x002 /* generic signature */ 485#define PF_OSFP_NODETAIL 0x004 /* no p0f details */ 486#define PF_OSFP_LEN 32 487 char fp_class_nm[PF_OSFP_LEN]; 488 char fp_version_nm[PF_OSFP_LEN]; 489 char fp_subtype_nm[PF_OSFP_LEN]; 490}; 491#define PF_OSFP_ENTRY_EQ(a, b) \ 492 ((a)->fp_os == (b)->fp_os && \ 493 memcmp((a)->fp_class_nm, (b)->fp_class_nm, PF_OSFP_LEN) == 0 && \ 494 memcmp((a)->fp_version_nm, (b)->fp_version_nm, PF_OSFP_LEN) == 0 && \ 495 memcmp((a)->fp_subtype_nm, (b)->fp_subtype_nm, PF_OSFP_LEN) == 0) 496 497/* handle pf_osfp_t packing */ 498#define _FP_RESERVED_BIT 1 /* For the special negative #defines */ 499#define _FP_UNUSED_BITS 1 500#define _FP_CLASS_BITS 10 /* OS Class (Windows, Linux) */ 501#define _FP_VERSION_BITS 10 /* OS version (95, 98, NT, 2.4.54, 3.2) */ 502#define _FP_SUBTYPE_BITS 10 /* patch level (NT SP4, SP3, ECN patch) */ 503#define PF_OSFP_UNPACK(osfp, class, version, subtype) do { \ 504 (class) = ((osfp) >> (_FP_VERSION_BITS+_FP_SUBTYPE_BITS)) & \ 505 ((1 << _FP_CLASS_BITS) - 1); \ 506 (version) = ((osfp) >> _FP_SUBTYPE_BITS) & \ 507 ((1 << _FP_VERSION_BITS) - 1);\ 508 (subtype) = (osfp) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 509} while(0) 510#define PF_OSFP_PACK(osfp, class, version, subtype) do { \ 511 (osfp) = ((class) & ((1 << _FP_CLASS_BITS) - 1)) << (_FP_VERSION_BITS \ 512 + _FP_SUBTYPE_BITS); \ 513 (osfp) |= ((version) & ((1 << _FP_VERSION_BITS) - 1)) << \ 514 _FP_SUBTYPE_BITS; \ 515 (osfp) |= (subtype) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 516} while(0) 517 518/* the fingerprint of an OSes TCP SYN packet */ 519typedef u_int64_t pf_tcpopts_t; 520struct pf_os_fingerprint { 521 SLIST_HEAD(pf_osfp_enlist, pf_osfp_entry) fp_oses; /* list of matches */ 522 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 523 u_int16_t fp_wsize; /* TCP window size */ 524 u_int16_t fp_psize; /* ip->ip_len */ 525 u_int16_t fp_mss; /* TCP MSS */ 526 u_int16_t fp_flags; 527#define PF_OSFP_WSIZE_MOD 0x0001 /* Window modulus */ 528#define PF_OSFP_WSIZE_DC 0x0002 /* Window don't care */ 529#define PF_OSFP_WSIZE_MSS 0x0004 /* Window multiple of MSS */ 530#define PF_OSFP_WSIZE_MTU 0x0008 /* Window multiple of MTU */ 531#define PF_OSFP_PSIZE_MOD 0x0010 /* packet size modulus */ 532#define PF_OSFP_PSIZE_DC 0x0020 /* packet size don't care */ 533#define PF_OSFP_WSCALE 0x0040 /* TCP window scaling */ 534#define PF_OSFP_WSCALE_MOD 0x0080 /* TCP window scale modulus */ 535#define PF_OSFP_WSCALE_DC 0x0100 /* TCP window scale dont-care */ 536#define PF_OSFP_MSS 0x0200 /* TCP MSS */ 537#define PF_OSFP_MSS_MOD 0x0400 /* TCP MSS modulus */ 538#define PF_OSFP_MSS_DC 0x0800 /* TCP MSS dont-care */ 539#define PF_OSFP_DF 0x1000 /* IPv4 don't fragment bit */ 540#define PF_OSFP_TS0 0x2000 /* Zero timestamp */ 541#define PF_OSFP_INET6 0x4000 /* IPv6 */ 542 u_int8_t fp_optcnt; /* TCP option count */ 543 u_int8_t fp_wscale; /* TCP window scaling */ 544 u_int8_t fp_ttl; /* IPv4 TTL */ 545#define PF_OSFP_MAXTTL_OFFSET 40 546/* TCP options packing */ 547#define PF_OSFP_TCPOPT_NOP 0x0 /* TCP NOP option */ 548#define PF_OSFP_TCPOPT_WSCALE 0x1 /* TCP window scaling option */ 549#define PF_OSFP_TCPOPT_MSS 0x2 /* TCP max segment size opt */ 550#define PF_OSFP_TCPOPT_SACK 0x3 /* TCP SACK OK option */ 551#define PF_OSFP_TCPOPT_TS 0x4 /* TCP timestamp option */ 552#define PF_OSFP_TCPOPT_BITS 3 /* bits used by each option */ 553#define PF_OSFP_MAX_OPTS \ 554 (sizeof(((struct pf_os_fingerprint *)0)->fp_tcpopts) * 8) \ 555 / PF_OSFP_TCPOPT_BITS 556 557 SLIST_ENTRY(pf_os_fingerprint) fp_next; 558}; 559 560struct pf_osfp_ioctl { 561 struct pf_osfp_entry fp_os; 562 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 563 u_int16_t fp_wsize; /* TCP window size */ 564 u_int16_t fp_psize; /* ip->ip_len */ 565 u_int16_t fp_mss; /* TCP MSS */ 566 u_int16_t fp_flags; 567 u_int8_t fp_optcnt; /* TCP option count */ 568 u_int8_t fp_wscale; /* TCP window scaling */ 569 u_int8_t fp_ttl; /* IPv4 TTL */ 570 571 int fp_getnum; /* DIOCOSFPGET number */ 572}; 573 574 575union pf_rule_ptr { 576 struct pf_rule *ptr; 577 u_int32_t nr; 578}; 579 580#define PF_ANCHOR_NAME_SIZE 64 581 582struct pf_rule { 583 struct pf_rule_addr src; 584 struct pf_rule_addr dst; 585#define PF_SKIP_IFP 0 586#define PF_SKIP_DIR 1 587#define PF_SKIP_AF 2 588#define PF_SKIP_PROTO 3 589#define PF_SKIP_SRC_ADDR 4 590#define PF_SKIP_SRC_PORT 5 591#define PF_SKIP_DST_ADDR 6 592#define PF_SKIP_DST_PORT 7 593#define PF_SKIP_COUNT 8 594 union pf_rule_ptr skip[PF_SKIP_COUNT]; 595#define PF_RULE_LABEL_SIZE 64 596 char label[PF_RULE_LABEL_SIZE]; 597#define PF_QNAME_SIZE 64 598 char ifname[IFNAMSIZ]; 599 char qname[PF_QNAME_SIZE]; 600 char pqname[PF_QNAME_SIZE]; 601#define PF_TAG_NAME_SIZE 64 602 char tagname[PF_TAG_NAME_SIZE]; 603 char match_tagname[PF_TAG_NAME_SIZE]; 604 605 char overload_tblname[PF_TABLE_NAME_SIZE]; 606 607 TAILQ_ENTRY(pf_rule) entries; 608 struct pf_pool rpool; 609 610 u_int64_t evaluations; 611 u_int64_t packets[2]; 612 u_int64_t bytes[2]; 613 614 struct pfi_kif *kif; 615 struct pf_anchor *anchor; 616 struct pfr_ktable *overload_tbl; 617 618 pf_osfp_t os_fingerprint; 619 620 int rtableid; 621 u_int32_t timeout[PFTM_MAX]; 622 u_int32_t states; 623 u_int32_t max_states; 624 u_int32_t src_nodes; 625 u_int32_t max_src_nodes; 626 u_int32_t max_src_states; 627 u_int32_t max_src_conn; 628 struct { 629 u_int32_t limit; 630 u_int32_t seconds; 631 } max_src_conn_rate; 632 u_int32_t qid; 633 u_int32_t pqid; 634 u_int32_t rt_listid; 635 u_int32_t nr; 636 u_int32_t prob; 637 uid_t cuid; 638 pid_t cpid; 639 640 u_int16_t return_icmp; 641 u_int16_t return_icmp6; 642 u_int16_t max_mss; 643 u_int16_t tag; 644 u_int16_t match_tag; 645 646 struct pf_rule_uid uid; 647 struct pf_rule_gid gid; 648 649 u_int32_t rule_flag; 650 u_int8_t action; 651 u_int8_t direction; 652 u_int8_t log; 653 u_int8_t logif; 654 u_int8_t quick; 655 u_int8_t ifnot; 656 u_int8_t match_tag_not; 657 u_int8_t natpass; 658 659#define PF_STATE_NORMAL 0x1 660#define PF_STATE_MODULATE 0x2 661#define PF_STATE_SYNPROXY 0x3 662 u_int8_t keep_state; 663 sa_family_t af; 664 u_int8_t proto; 665 u_int8_t type; 666 u_int8_t code; 667 u_int8_t flags; 668 u_int8_t flagset; 669 u_int8_t min_ttl; 670 u_int8_t allow_opts; 671 u_int8_t rt; 672 u_int8_t return_ttl; 673 u_int8_t tos; 674 u_int8_t anchor_relative; 675 u_int8_t anchor_wildcard; 676 677#define PF_FLUSH 0x01 678#define PF_FLUSH_GLOBAL 0x02 679 u_int8_t flush; 680}; 681 682/* rule flags */ 683#define PFRULE_DROP 0x0000 684#define PFRULE_RETURNRST 0x0001 685#define PFRULE_FRAGMENT 0x0002 686#define PFRULE_RETURNICMP 0x0004 687#define PFRULE_RETURN 0x0008 688#define PFRULE_NOSYNC 0x0010 689#define PFRULE_SRCTRACK 0x0020 /* track source states */ 690#define PFRULE_RULESRCTRACK 0x0040 /* per rule */ 691 692/* scrub flags */ 693#define PFRULE_NODF 0x0100 694#define PFRULE_FRAGCROP 0x0200 /* non-buffering frag cache */ 695#define PFRULE_FRAGDROP 0x0400 /* drop funny fragments */ 696#define PFRULE_RANDOMID 0x0800 697#define PFRULE_REASSEMBLE_TCP 0x1000 698 699/* rule flags again */ 700#define PFRULE_IFBOUND 0x00010000 /* if-bound */ 701 702#define PFSTATE_HIWAT 10000 /* default state table size */ 703#define PFSTATE_ADAPT_START 6000 /* default adaptive timeout start */ 704#define PFSTATE_ADAPT_END 12000 /* default adaptive timeout end */ 705 706 707struct pf_threshold { 708 u_int32_t limit; 709#define PF_THRESHOLD_MULT 1000 710#define PF_THRESHOLD_MAX 0xffffffff / PF_THRESHOLD_MULT 711 u_int32_t seconds; 712 u_int32_t count; 713 u_int32_t last; 714}; 715 716struct pf_src_node { 717 RB_ENTRY(pf_src_node) entry; 718 struct pf_addr addr; 719 struct pf_addr raddr; 720 union pf_rule_ptr rule; 721 struct pfi_kif *kif; 722 u_int64_t bytes[2]; 723 u_int64_t packets[2]; 724 u_int32_t states; 725 u_int32_t conn; 726 struct pf_threshold conn_rate; 727 u_int32_t creation; 728 u_int32_t expire; 729 sa_family_t af; 730 u_int8_t ruletype; 731}; 732 733#define PFSNODE_HIWAT 10000 /* default source node table size */ 734 735struct pf_state_scrub { 736 struct timeval pfss_last; /* time received last packet */ 737 u_int32_t pfss_tsecr; /* last echoed timestamp */ 738 u_int32_t pfss_tsval; /* largest timestamp */ 739 u_int32_t pfss_tsval0; /* original timestamp */ 740 u_int16_t pfss_flags; 741#define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */ 742#define PFSS_PAWS 0x0010 /* stricter PAWS checks */ 743#define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */ 744#define PFSS_DATA_TS 0x0040 /* timestamp on data packets */ 745#define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */ 746 u_int8_t pfss_ttl; /* stashed TTL */ 747 u_int8_t pad; 748 u_int32_t pfss_ts_mod; /* timestamp modulation */ 749}; 750 751struct pf_state_host { 752 struct pf_addr addr; 753 u_int16_t port; 754 u_int16_t pad; 755}; 756 757struct pf_state_peer { 758 u_int32_t seqlo; /* Max sequence number sent */ 759 u_int32_t seqhi; /* Max the other end ACKd + win */ 760 u_int32_t seqdiff; /* Sequence number modulator */ 761 u_int16_t max_win; /* largest window (pre scaling) */ 762 u_int8_t state; /* active state level */ 763 u_int8_t wscale; /* window scaling factor */ 764 u_int16_t mss; /* Maximum segment size option */ 765 u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */ 766 struct pf_state_scrub *scrub; /* state is scrubbed */ 767 u_int8_t pad[3]; 768}; 769 770TAILQ_HEAD(pf_state_queue, pf_state); 771 772/* keep synced with struct pf_state, used in RB_FIND */ 773struct pf_state_cmp { 774 u_int64_t id; 775 u_int32_t creatorid; 776 struct pf_state_host lan; 777 struct pf_state_host gwy; 778 struct pf_state_host ext; 779 sa_family_t af; 780 u_int8_t proto; 781 u_int8_t direction; 782 u_int8_t pad; 783}; 784 785struct pf_state { 786 u_int64_t id; 787 u_int32_t creatorid; 788 struct pf_state_host lan; 789 struct pf_state_host gwy; 790 struct pf_state_host ext; 791 sa_family_t af; 792 u_int8_t proto; 793 u_int8_t direction; 794#ifdef __FreeBSD__ 795 u_int8_t local_flags; 796#define PFSTATE_EXPIRING 0x01 797#else 798 u_int8_t pad; 799#endif 800 u_int8_t log; 801 u_int8_t allow_opts; 802 u_int8_t timeout; 803 u_int8_t sync_flags; 804#define PFSTATE_NOSYNC 0x01 805#define PFSTATE_FROMSYNC 0x02 806#define PFSTATE_STALE 0x04 807 union { 808 struct { 809 RB_ENTRY(pf_state) entry_lan_ext; 810 RB_ENTRY(pf_state) entry_ext_gwy; 811 RB_ENTRY(pf_state) entry_id; 812 TAILQ_ENTRY(pf_state) entry_list; 813 struct pfi_kif *kif; 814 } s; 815 char ifname[IFNAMSIZ]; 816 } u; 817 struct pf_state_peer src; 818 struct pf_state_peer dst; 819 union pf_rule_ptr rule; 820 union pf_rule_ptr anchor; 821 union pf_rule_ptr nat_rule; 822 struct pf_addr rt_addr; 823 struct pfi_kif *rt_kif; 824 struct pf_src_node *src_node; 825 struct pf_src_node *nat_src_node; 826 u_int64_t packets[2]; 827 u_int64_t bytes[2]; 828 u_int32_t creation; 829 u_int32_t expire; 830 u_int32_t pfsync_time; 831 u_int16_t tag; 832}; 833 834TAILQ_HEAD(pf_rulequeue, pf_rule); 835 836struct pf_anchor; 837 838struct pf_ruleset { 839 struct { 840 struct pf_rulequeue queues[2]; 841 struct { 842 struct pf_rulequeue *ptr; 843 struct pf_rule **ptr_array; 844 u_int32_t rcount; 845 u_int32_t ticket; 846 int open; 847 } active, inactive; 848 } rules[PF_RULESET_MAX]; 849 struct pf_anchor *anchor; 850 u_int32_t tticket; 851 int tables; 852 int topen; 853}; 854 855RB_HEAD(pf_anchor_global, pf_anchor); 856RB_HEAD(pf_anchor_node, pf_anchor); 857struct pf_anchor { 858 RB_ENTRY(pf_anchor) entry_global; 859 RB_ENTRY(pf_anchor) entry_node; 860 struct pf_anchor *parent; 861 struct pf_anchor_node children; 862 char name[PF_ANCHOR_NAME_SIZE]; 863 char path[MAXPATHLEN]; 864 struct pf_ruleset ruleset; 865 int refcnt; /* anchor rules */ 866 int match; 867}; 868RB_PROTOTYPE(pf_anchor_global, pf_anchor, entry_global, pf_anchor_compare); 869RB_PROTOTYPE(pf_anchor_node, pf_anchor, entry_node, pf_anchor_compare); 870 871#define PF_RESERVED_ANCHOR "_pf" 872 873#define PFR_TFLAG_PERSIST 0x00000001 874#define PFR_TFLAG_CONST 0x00000002 875#define PFR_TFLAG_ACTIVE 0x00000004 876#define PFR_TFLAG_INACTIVE 0x00000008 877#define PFR_TFLAG_REFERENCED 0x00000010 878#define PFR_TFLAG_REFDANCHOR 0x00000020 879#define PFR_TFLAG_USRMASK 0x00000003 880#define PFR_TFLAG_SETMASK 0x0000003C 881#define PFR_TFLAG_ALLMASK 0x0000003F 882 883struct pfr_table { 884 char pfrt_anchor[MAXPATHLEN]; 885 char pfrt_name[PF_TABLE_NAME_SIZE]; 886 u_int32_t pfrt_flags; 887 u_int8_t pfrt_fback; 888}; 889 890enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED, 891 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE, 892 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_MAX }; 893 894struct pfr_addr { 895 union { 896 struct in_addr _pfra_ip4addr; 897 struct in6_addr _pfra_ip6addr; 898 } pfra_u; 899 u_int8_t pfra_af; 900 u_int8_t pfra_net; 901 u_int8_t pfra_not; 902 u_int8_t pfra_fback; 903}; 904#define pfra_ip4addr pfra_u._pfra_ip4addr 905#define pfra_ip6addr pfra_u._pfra_ip6addr 906 907enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX }; 908enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX }; 909#define PFR_OP_XPASS PFR_OP_ADDR_MAX 910 911struct pfr_astats { 912 struct pfr_addr pfras_a; 913 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 914 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 915 long pfras_tzero; 916}; 917 918enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX }; 919 920struct pfr_tstats { 921 struct pfr_table pfrts_t; 922 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 923 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 924 u_int64_t pfrts_match; 925 u_int64_t pfrts_nomatch; 926 long pfrts_tzero; 927 int pfrts_cnt; 928 int pfrts_refcnt[PFR_REFCNT_MAX]; 929}; 930#define pfrts_name pfrts_t.pfrt_name 931#define pfrts_flags pfrts_t.pfrt_flags 932 933#ifndef _SOCKADDR_UNION_DEFINED 934#define _SOCKADDR_UNION_DEFINED 935union sockaddr_union { 936 struct sockaddr sa; 937 struct sockaddr_in sin; 938 struct sockaddr_in6 sin6; 939}; 940#endif /* _SOCKADDR_UNION_DEFINED */ 941 942SLIST_HEAD(pfr_kentryworkq, pfr_kentry); 943struct pfr_kentry { 944 struct radix_node pfrke_node[2]; 945 union sockaddr_union pfrke_sa; 946 u_int64_t pfrke_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 947 u_int64_t pfrke_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 948 SLIST_ENTRY(pfr_kentry) pfrke_workq; 949 long pfrke_tzero; 950 u_int8_t pfrke_af; 951 u_int8_t pfrke_net; 952 u_int8_t pfrke_not; 953 u_int8_t pfrke_mark; 954 u_int8_t pfrke_intrpool; 955}; 956 957SLIST_HEAD(pfr_ktableworkq, pfr_ktable); 958RB_HEAD(pfr_ktablehead, pfr_ktable); 959struct pfr_ktable { 960 struct pfr_tstats pfrkt_ts; 961 RB_ENTRY(pfr_ktable) pfrkt_tree; 962 SLIST_ENTRY(pfr_ktable) pfrkt_workq; 963 struct radix_node_head *pfrkt_ip4; 964 struct radix_node_head *pfrkt_ip6; 965 struct pfr_ktable *pfrkt_shadow; 966 struct pfr_ktable *pfrkt_root; 967 struct pf_ruleset *pfrkt_rs; 968 long pfrkt_larg; 969 int pfrkt_nflags; 970}; 971#define pfrkt_t pfrkt_ts.pfrts_t 972#define pfrkt_name pfrkt_t.pfrt_name 973#define pfrkt_anchor pfrkt_t.pfrt_anchor 974#define pfrkt_ruleset pfrkt_t.pfrt_ruleset 975#define pfrkt_flags pfrkt_t.pfrt_flags 976#define pfrkt_cnt pfrkt_ts.pfrts_cnt 977#define pfrkt_refcnt pfrkt_ts.pfrts_refcnt 978#define pfrkt_packets pfrkt_ts.pfrts_packets 979#define pfrkt_bytes pfrkt_ts.pfrts_bytes 980#define pfrkt_match pfrkt_ts.pfrts_match 981#define pfrkt_nomatch pfrkt_ts.pfrts_nomatch 982#define pfrkt_tzero pfrkt_ts.pfrts_tzero 983 984RB_HEAD(pf_state_tree_lan_ext, pf_state); 985RB_PROTOTYPE(pf_state_tree_lan_ext, pf_state, 986 u.s.entry_lan_ext, pf_state_compare_lan_ext); 987 988RB_HEAD(pf_state_tree_ext_gwy, pf_state); 989RB_PROTOTYPE(pf_state_tree_ext_gwy, pf_state, 990 u.s.entry_ext_gwy, pf_state_compare_ext_gwy); 991 992TAILQ_HEAD(pfi_statehead, pfi_kif); 993RB_HEAD(pfi_ifhead, pfi_kif); 994 995/* keep synced with pfi_kif, used in RB_FIND */ 996struct pfi_kif_cmp { 997 char pfik_name[IFNAMSIZ]; 998}; 999 1000struct pfi_kif { 1001 char pfik_name[IFNAMSIZ]; 1002 RB_ENTRY(pfi_kif) pfik_tree; 1003 u_int64_t pfik_packets[2][2][2]; 1004 u_int64_t pfik_bytes[2][2][2]; 1005 u_int32_t pfik_tzero; 1006 int pfik_flags; 1007 struct pf_state_tree_lan_ext pfik_lan_ext; 1008 struct pf_state_tree_ext_gwy pfik_ext_gwy; 1009 TAILQ_ENTRY(pfi_kif) pfik_w_states; 1010#ifndef __FreeBSD__ 1011 void *pfik_ah_cookie; 1012#endif 1013 struct ifnet *pfik_ifp; 1014 struct ifg_group *pfik_group; 1015 int pfik_states; 1016 int pfik_rules; 1017 TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs; 1018}; 1019 1020enum pfi_kif_refs { 1021 PFI_KIF_REF_NONE, 1022 PFI_KIF_REF_STATE, 1023 PFI_KIF_REF_RULE 1024}; 1025 1026#define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */ 1027/* XXX: revisist */ 1028#define PFI_IFLAG_SETABLE_MASK 0x0100 /* setable via DIOC{SET,CLR}IFFLAG */ 1029#define PFI_IFLAG_PLACEHOLDER 0x8000 /* placeholder group/interface */ 1030 1031struct pf_pdesc { 1032 struct { 1033 int done; 1034 uid_t uid; 1035 gid_t gid; 1036 pid_t pid; 1037 } lookup; 1038 u_int64_t tot_len; /* Make Mickey money */ 1039 union { 1040 struct tcphdr *tcp; 1041 struct udphdr *udp; 1042 struct icmp *icmp; 1043#ifdef INET6 1044 struct icmp6_hdr *icmp6; 1045#endif /* INET6 */ 1046 void *any; 1047 } hdr; 1048 struct pf_addr baddr; /* address before translation */ 1049 struct pf_addr naddr; /* address after translation */ 1050 struct pf_rule *nat_rule; /* nat/rdr rule applied to packet */ 1051 struct pf_addr *src; 1052 struct pf_addr *dst; 1053 struct ether_header 1054 *eh; 1055 struct pf_mtag *pf_mtag; 1056 u_int16_t *ip_sum; 1057 u_int32_t p_len; /* total length of payload */ 1058 u_int16_t flags; /* Let SCRUB trigger behavior in 1059 * state code. Easier than tags */ 1060#define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */ 1061#define PFDESC_IP_REAS 0x0002 /* IP frags would've been reassembled */ 1062 sa_family_t af; 1063 u_int8_t proto; 1064 u_int8_t tos; 1065}; 1066 1067/* flags for RDR options */ 1068#define PF_DPORT_RANGE 0x01 /* Dest port uses range */ 1069#define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */ 1070 1071/* Reasons code for passing/dropping a packet */ 1072#define PFRES_MATCH 0 /* Explicit match of a rule */ 1073#define PFRES_BADOFF 1 /* Bad offset for pull_hdr */ 1074#define PFRES_FRAG 2 /* Dropping following fragment */ 1075#define PFRES_SHORT 3 /* Dropping short packet */ 1076#define PFRES_NORM 4 /* Dropping by normalizer */ 1077#define PFRES_MEMORY 5 /* Dropped due to lacking mem */ 1078#define PFRES_TS 6 /* Bad TCP Timestamp (RFC1323) */ 1079#define PFRES_CONGEST 7 /* Congestion (of ipintrq) */ 1080#define PFRES_IPOPTIONS 8 /* IP option */ 1081#define PFRES_PROTCKSUM 9 /* Protocol checksum invalid */ 1082#define PFRES_BADSTATE 10 /* State mismatch */ 1083#define PFRES_STATEINS 11 /* State insertion failure */ 1084#define PFRES_MAXSTATES 12 /* State limit */ 1085#define PFRES_SRCLIMIT 13 /* Source node/conn limit */ 1086#define PFRES_SYNPROXY 14 /* SYN proxy */ 1087#define PFRES_MAX 15 /* total+1 */ 1088 1089#define PFRES_NAMES { \ 1090 "match", \ 1091 "bad-offset", \ 1092 "fragment", \ 1093 "short", \ 1094 "normalize", \ 1095 "memory", \ 1096 "bad-timestamp", \ 1097 "congestion", \ 1098 "ip-option", \ 1099 "proto-cksum", \ 1100 "state-mismatch", \ 1101 "state-insert", \ 1102 "state-limit", \ 1103 "src-limit", \ 1104 "synproxy", \ 1105 NULL \ 1106} 1107 1108/* Counters for other things we want to keep track of */ 1109#define LCNT_STATES 0 /* states */ 1110#define LCNT_SRCSTATES 1 /* max-src-states */ 1111#define LCNT_SRCNODES 2 /* max-src-nodes */ 1112#define LCNT_SRCCONN 3 /* max-src-conn */ 1113#define LCNT_SRCCONNRATE 4 /* max-src-conn-rate */ 1114#define LCNT_OVERLOAD_TABLE 5 /* entry added to overload table */ 1115#define LCNT_OVERLOAD_FLUSH 6 /* state entries flushed */ 1116#define LCNT_MAX 7 /* total+1 */ 1117 1118#define LCNT_NAMES { \ 1119 "max states per rule", \ 1120 "max-src-states", \ 1121 "max-src-nodes", \ 1122 "max-src-conn", \ 1123 "max-src-conn-rate", \ 1124 "overload table insertion", \ 1125 "overload flush states", \ 1126 NULL \ 1127} 1128 1129/* UDP state enumeration */ 1130#define PFUDPS_NO_TRAFFIC 0 1131#define PFUDPS_SINGLE 1 1132#define PFUDPS_MULTIPLE 2 1133 1134#define PFUDPS_NSTATES 3 /* number of state levels */ 1135 1136#define PFUDPS_NAMES { \ 1137 "NO_TRAFFIC", \ 1138 "SINGLE", \ 1139 "MULTIPLE", \ 1140 NULL \ 1141} 1142 1143/* Other protocol state enumeration */ 1144#define PFOTHERS_NO_TRAFFIC 0 1145#define PFOTHERS_SINGLE 1 1146#define PFOTHERS_MULTIPLE 2 1147 1148#define PFOTHERS_NSTATES 3 /* number of state levels */ 1149 1150#define PFOTHERS_NAMES { \ 1151 "NO_TRAFFIC", \ 1152 "SINGLE", \ 1153 "MULTIPLE", \ 1154 NULL \ 1155} 1156 1157#define FCNT_STATE_SEARCH 0 1158#define FCNT_STATE_INSERT 1 1159#define FCNT_STATE_REMOVALS 2 1160#define FCNT_MAX 3 1161 1162#define SCNT_SRC_NODE_SEARCH 0 1163#define SCNT_SRC_NODE_INSERT 1 1164#define SCNT_SRC_NODE_REMOVALS 2 1165#define SCNT_MAX 3 1166 1167#define ACTION_SET(a, x) \ 1168 do { \ 1169 if ((a) != NULL) \ 1170 *(a) = (x); \ 1171 } while (0) 1172 1173#define REASON_SET(a, x) \ 1174 do { \ 1175 if ((a) != NULL) \ 1176 *(a) = (x); \ 1177 if (x < PFRES_MAX) \ 1178 pf_status.counters[x]++; \ 1179 } while (0) 1180 1181struct pf_status { 1182 u_int64_t counters[PFRES_MAX]; 1183 u_int64_t lcounters[LCNT_MAX]; /* limit counters */ 1184 u_int64_t fcounters[FCNT_MAX]; 1185 u_int64_t scounters[SCNT_MAX]; 1186 u_int64_t pcounters[2][2][3]; 1187 u_int64_t bcounters[2][2]; 1188 u_int64_t stateid; 1189 u_int32_t running; 1190 u_int32_t states; 1191 u_int32_t src_nodes; 1192 u_int32_t since; 1193 u_int32_t debug; 1194 u_int32_t hostid; 1195 char ifname[IFNAMSIZ]; 1196 u_int8_t pf_chksum[PF_MD5_DIGEST_LENGTH]; 1197}; 1198 1199struct cbq_opts { 1200 u_int minburst; 1201 u_int maxburst; 1202 u_int pktsize; 1203 u_int maxpktsize; 1204 u_int ns_per_byte; 1205 u_int maxidle; 1206 int minidle; 1207 u_int offtime; 1208 int flags; 1209}; 1210 1211struct priq_opts { 1212 int flags; 1213}; 1214 1215struct hfsc_opts { 1216 /* real-time service curve */ 1217 u_int rtsc_m1; /* slope of the 1st segment in bps */ 1218 u_int rtsc_d; /* the x-projection of m1 in msec */ 1219 u_int rtsc_m2; /* slope of the 2nd segment in bps */ 1220 /* link-sharing service curve */ 1221 u_int lssc_m1; 1222 u_int lssc_d; 1223 u_int lssc_m2; 1224 /* upper-limit service curve */ 1225 u_int ulsc_m1; 1226 u_int ulsc_d; 1227 u_int ulsc_m2; 1228 int flags; 1229}; 1230 1231struct pf_altq { 1232 char ifname[IFNAMSIZ]; 1233 1234 void *altq_disc; /* discipline-specific state */ 1235 TAILQ_ENTRY(pf_altq) entries; 1236 1237 /* scheduler spec */ 1238 u_int8_t scheduler; /* scheduler type */ 1239 u_int16_t tbrsize; /* tokenbucket regulator size */ 1240 u_int32_t ifbandwidth; /* interface bandwidth */ 1241 1242 /* queue spec */ 1243 char qname[PF_QNAME_SIZE]; /* queue name */ 1244 char parent[PF_QNAME_SIZE]; /* parent name */ 1245 u_int32_t parent_qid; /* parent queue id */ 1246 u_int32_t bandwidth; /* queue bandwidth */ 1247 u_int8_t priority; /* priority */ 1248 u_int16_t qlimit; /* queue size limit */ 1249 u_int16_t flags; /* misc flags */ 1250 union { 1251 struct cbq_opts cbq_opts; 1252 struct priq_opts priq_opts; 1253 struct hfsc_opts hfsc_opts; 1254 } pq_u; 1255 1256 u_int32_t qid; /* return value */ 1257}; 1258 1259#ifndef __FreeBSD__ 1260 1261#define PF_TAG_GENERATED 0x01 1262#define PF_TAG_FRAGCACHE 0x02 1263#define PF_TAG_TRANSLATE_LOCALHOST 0x04 1264 1265struct pf_mtag { 1266 void *hdr; /* saved hdr pos in mbuf, for ECN */ 1267 u_int rtableid; /* alternate routing table id */ 1268 u_int32_t qid; /* queue id */ 1269 u_int16_t tag; /* tag id */ 1270 u_int8_t flags; 1271 u_int8_t routed; 1272 sa_family_t af; /* for ECN */ 1273}; 1274#endif 1275 1276struct pf_tag { 1277 u_int16_t tag; /* tag id */ 1278}; 1279 1280struct pf_tagname { 1281 TAILQ_ENTRY(pf_tagname) entries; 1282 char name[PF_TAG_NAME_SIZE]; 1283 u_int16_t tag; 1284 int ref; 1285}; 1286 1287#define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */ 1288#define PFFRAG_FRAG_HIWAT 1000 /* Number of fragmented packets */ 1289#define PFFRAG_FRCENT_HIWAT 50000 /* Number of fragment cache entries */ 1290#define PFFRAG_FRCACHE_HIWAT 10000 /* Number of fragment descriptors */ 1291 1292#define PFR_KTABLE_HIWAT 1000 /* Number of tables */ 1293#define PFR_KENTRY_HIWAT 200000 /* Number of table entries */ 1294#define PFR_KENTRY_HIWAT_SMALL 100000 /* Number of table entries (tiny hosts) */ 1295 1296/* 1297 * ioctl parameter structures 1298 */ 1299 1300struct pfioc_pooladdr { 1301 u_int32_t action; 1302 u_int32_t ticket; 1303 u_int32_t nr; 1304 u_int32_t r_num; 1305 u_int8_t r_action; 1306 u_int8_t r_last; 1307 u_int8_t af; 1308 char anchor[MAXPATHLEN]; 1309 struct pf_pooladdr addr; 1310}; 1311 1312struct pfioc_rule { 1313 u_int32_t action; 1314 u_int32_t ticket; 1315 u_int32_t pool_ticket; 1316 u_int32_t nr; 1317 char anchor[MAXPATHLEN]; 1318 char anchor_call[MAXPATHLEN]; 1319 struct pf_rule rule; 1320}; 1321 1322struct pfioc_natlook { 1323 struct pf_addr saddr; 1324 struct pf_addr daddr; 1325 struct pf_addr rsaddr; 1326 struct pf_addr rdaddr; 1327 u_int16_t sport; 1328 u_int16_t dport; 1329 u_int16_t rsport; 1330 u_int16_t rdport; 1331 sa_family_t af; 1332 u_int8_t proto; 1333 u_int8_t direction; 1334}; 1335 1336struct pfioc_state { 1337 u_int32_t nr; 1338 struct pf_state state; 1339}; 1340 1341struct pfioc_src_node_kill { 1342 /* XXX returns the number of src nodes killed in psnk_af */ 1343 sa_family_t psnk_af; 1344 struct pf_rule_addr psnk_src; 1345 struct pf_rule_addr psnk_dst; 1346}; 1347 1348struct pfioc_state_kill { 1349 /* XXX returns the number of states killed in psk_af */ 1350 sa_family_t psk_af; 1351 int psk_proto; 1352 struct pf_rule_addr psk_src; 1353 struct pf_rule_addr psk_dst; 1354 char psk_ifname[IFNAMSIZ]; 1355}; 1356 1357struct pfioc_states { 1358 int ps_len; 1359 union { 1360 caddr_t psu_buf; 1361 struct pf_state *psu_states; 1362 } ps_u; 1363#define ps_buf ps_u.psu_buf 1364#define ps_states ps_u.psu_states 1365}; 1366 1367struct pfioc_src_nodes { 1368 int psn_len; 1369 union { 1370 caddr_t psu_buf; 1371 struct pf_src_node *psu_src_nodes; 1372 } psn_u; 1373#define psn_buf psn_u.psu_buf 1374#define psn_src_nodes psn_u.psu_src_nodes 1375}; 1376 1377struct pfioc_if { 1378 char ifname[IFNAMSIZ]; 1379}; 1380 1381struct pfioc_tm { 1382 int timeout; 1383 int seconds; 1384}; 1385 1386struct pfioc_limit { 1387 int index; 1388 unsigned limit; 1389}; 1390 1391struct pfioc_altq { 1392 u_int32_t action; 1393 u_int32_t ticket; 1394 u_int32_t nr; 1395 struct pf_altq altq; 1396}; 1397 1398struct pfioc_qstats { 1399 u_int32_t ticket; 1400 u_int32_t nr; 1401 void *buf; 1402 int nbytes; 1403 u_int8_t scheduler; 1404}; 1405 1406struct pfioc_ruleset { 1407 u_int32_t nr; 1408 char path[MAXPATHLEN]; 1409 char name[PF_ANCHOR_NAME_SIZE]; 1410}; 1411 1412#define PF_RULESET_ALTQ (PF_RULESET_MAX) 1413#define PF_RULESET_TABLE (PF_RULESET_MAX+1) 1414struct pfioc_trans { 1415 int size; /* number of elements */ 1416 int esize; /* size of each element in bytes */ 1417 struct pfioc_trans_e { 1418 int rs_num; 1419 char anchor[MAXPATHLEN]; 1420 u_int32_t ticket; 1421 } *array; 1422}; 1423 1424#define PFR_FLAG_ATOMIC 0x00000001 1425#define PFR_FLAG_DUMMY 0x00000002 1426#define PFR_FLAG_FEEDBACK 0x00000004 1427#define PFR_FLAG_CLSTATS 0x00000008 1428#define PFR_FLAG_ADDRSTOO 0x00000010 1429#define PFR_FLAG_REPLACE 0x00000020 1430#define PFR_FLAG_ALLRSETS 0x00000040 1431#define PFR_FLAG_ALLMASK 0x0000007F 1432#ifdef _KERNEL 1433#define PFR_FLAG_USERIOCTL 0x10000000 1434#endif 1435 1436struct pfioc_table { 1437 struct pfr_table pfrio_table; 1438 void *pfrio_buffer; 1439 int pfrio_esize; 1440 int pfrio_size; 1441 int pfrio_size2; 1442 int pfrio_nadd; 1443 int pfrio_ndel; 1444 int pfrio_nchange; 1445 int pfrio_flags; 1446 u_int32_t pfrio_ticket; 1447}; 1448#define pfrio_exists pfrio_nadd 1449#define pfrio_nzero pfrio_nadd 1450#define pfrio_nmatch pfrio_nadd 1451#define pfrio_naddr pfrio_size2 1452#define pfrio_setflag pfrio_size2 1453#define pfrio_clrflag pfrio_nadd 1454 1455struct pfioc_iface { 1456 char pfiio_name[IFNAMSIZ]; 1457 void *pfiio_buffer; 1458 int pfiio_esize; 1459 int pfiio_size; 1460 int pfiio_nzero; 1461 int pfiio_flags; 1462}; 1463 1464 1465/* 1466 * ioctl operations 1467 */ 1468 1469#define DIOCSTART _IO ('D', 1) 1470#define DIOCSTOP _IO ('D', 2) 1471#define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule) 1472#define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule) 1473#define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule) 1474/* XXX cut 8 - 17 */ 1475#define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill) 1476#define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state) 1477#define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if) 1478#define DIOCGETSTATUS _IOWR('D', 21, struct pf_status) 1479#define DIOCCLRSTATUS _IO ('D', 22) 1480#define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook) 1481#define DIOCSETDEBUG _IOWR('D', 24, u_int32_t) 1482#define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states) 1483#define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule) 1484/* XXX cut 26 - 28 */ 1485#define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm) 1486#define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm) 1487#define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state) 1488#define DIOCCLRRULECTRS _IO ('D', 38) 1489#define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit) 1490#define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit) 1491#define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill) 1492#define DIOCSTARTALTQ _IO ('D', 42) 1493#define DIOCSTOPALTQ _IO ('D', 43) 1494#define DIOCADDALTQ _IOWR('D', 45, struct pfioc_altq) 1495#define DIOCGETALTQS _IOWR('D', 47, struct pfioc_altq) 1496#define DIOCGETALTQ _IOWR('D', 48, struct pfioc_altq) 1497#define DIOCCHANGEALTQ _IOWR('D', 49, struct pfioc_altq) 1498#define DIOCGETQSTATS _IOWR('D', 50, struct pfioc_qstats) 1499#define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr) 1500#define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr) 1501#define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr) 1502#define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr) 1503#define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr) 1504/* XXX cut 55 - 57 */ 1505#define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset) 1506#define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset) 1507#define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table) 1508#define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table) 1509#define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table) 1510#define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table) 1511#define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table) 1512#define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table) 1513#define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table) 1514#define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table) 1515#define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table) 1516#define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table) 1517#define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table) 1518#define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table) 1519#define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table) 1520#define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table) 1521#define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table) 1522#define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table) 1523#define DIOCOSFPFLUSH _IO('D', 78) 1524#define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl) 1525#define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl) 1526#define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans) 1527#define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans) 1528#define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans) 1529#define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes) 1530#define DIOCCLRSRCNODES _IO('D', 85) 1531#define DIOCSETHOSTID _IOWR('D', 86, u_int32_t) 1532#define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface) 1533#define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface) 1534#define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface) 1535#define DIOCKILLSRCNODES _IOWR('D', 91, struct pfioc_src_node_kill) 1536#ifdef __FreeBSD__ 1537struct pf_ifspeed { 1538 char ifname[IFNAMSIZ]; 1539 u_int32_t baudrate; 1540}; 1541#define DIOCGIFSPEED _IOWR('D', 92, struct pf_ifspeed) 1542#endif 1543 1544#ifdef _KERNEL 1545RB_HEAD(pf_src_tree, pf_src_node); 1546RB_PROTOTYPE(pf_src_tree, pf_src_node, entry, pf_src_compare); 1547extern struct pf_src_tree tree_src_tracking; 1548 1549RB_HEAD(pf_state_tree_id, pf_state); 1550RB_PROTOTYPE(pf_state_tree_id, pf_state, 1551 entry_id, pf_state_compare_id); 1552extern struct pf_state_tree_id tree_id; 1553extern struct pf_state_queue state_list; 1554 1555TAILQ_HEAD(pf_poolqueue, pf_pool); 1556extern struct pf_poolqueue pf_pools[2]; 1557TAILQ_HEAD(pf_altqqueue, pf_altq); 1558extern struct pf_altqqueue pf_altqs[2]; 1559extern struct pf_palist pf_pabuf; 1560 1561extern u_int32_t ticket_altqs_active; 1562extern u_int32_t ticket_altqs_inactive; 1563extern int altqs_inactive_open; 1564extern u_int32_t ticket_pabuf; 1565extern struct pf_altqqueue *pf_altqs_active; 1566extern struct pf_altqqueue *pf_altqs_inactive; 1567extern struct pf_poolqueue *pf_pools_active; 1568extern struct pf_poolqueue *pf_pools_inactive; 1569extern int pf_tbladdr_setup(struct pf_ruleset *, 1570 struct pf_addr_wrap *); 1571extern void pf_tbladdr_remove(struct pf_addr_wrap *); 1572extern void pf_tbladdr_copyout(struct pf_addr_wrap *); 1573extern void pf_calc_skip_steps(struct pf_rulequeue *); 1574#ifdef __FreeBSD__ 1575extern uma_zone_t pf_src_tree_pl, pf_rule_pl; 1576extern uma_zone_t pf_state_pl, pf_altq_pl, pf_pooladdr_pl; 1577extern uma_zone_t pfr_ktable_pl, pfr_kentry_pl, pfr_kentry_pl2; 1578extern uma_zone_t pf_cache_pl, pf_cent_pl; 1579extern uma_zone_t pf_state_scrub_pl; 1580extern uma_zone_t pfi_addr_pl; 1581#else 1582extern struct pool pf_src_tree_pl, pf_rule_pl; 1583extern struct pool pf_state_pl, pf_altq_pl, pf_pooladdr_pl; 1584extern struct pool pf_state_scrub_pl; 1585#endif 1586extern void pf_purge_thread(void *); 1587extern void pf_purge_expired_src_nodes(int); 1588extern void pf_purge_expired_states(u_int32_t); 1589extern void pf_unlink_state(struct pf_state *); 1590extern void pf_free_state(struct pf_state *); 1591extern int pf_insert_state(struct pfi_kif *, 1592 struct pf_state *); 1593extern int pf_insert_src_node(struct pf_src_node **, 1594 struct pf_rule *, struct pf_addr *, 1595 sa_family_t); 1596void pf_src_tree_remove_state(struct pf_state *); 1597extern struct pf_state *pf_find_state_byid(struct pf_state_cmp *); 1598extern struct pf_state *pf_find_state_all(struct pf_state_cmp *key, 1599 u_int8_t tree, int *more); 1600extern void pf_print_state(struct pf_state *); 1601extern void pf_print_flags(u_int8_t); 1602extern u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t, 1603 u_int8_t); 1604 1605extern struct ifnet *sync_ifp; 1606extern struct pf_rule pf_default_rule; 1607extern void pf_addrcpy(struct pf_addr *, struct pf_addr *, 1608 u_int8_t); 1609void pf_rm_rule(struct pf_rulequeue *, 1610 struct pf_rule *); 1611 1612#ifdef INET 1613#ifdef __FreeBSD__ 1614int pf_test(int, struct ifnet *, struct mbuf **, struct ether_header *, 1615 struct inpcb *); 1616#else 1617int pf_test(int, struct ifnet *, struct mbuf **, struct ether_header *); 1618#endif 1619#endif /* INET */ 1620 1621#ifdef INET6 1622#ifdef __FreeBSD__ 1623int pf_test6(int, struct ifnet *, struct mbuf **, struct ether_header *, 1624 struct inpcb *); 1625#else 1626int pf_test6(int, struct ifnet *, struct mbuf **, struct ether_header *); 1627#endif 1628void pf_poolmask(struct pf_addr *, struct pf_addr*, 1629 struct pf_addr *, struct pf_addr *, u_int8_t); 1630void pf_addr_inc(struct pf_addr *, sa_family_t); 1631#endif /* INET6 */ 1632 1633#ifdef __FreeBSD__ 1634u_int32_t pf_new_isn(struct pf_state *); 1635#endif 1636void *pf_pull_hdr(struct mbuf *, int, void *, int, u_short *, u_short *, 1637 sa_family_t); 1638void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t); 1639int pflog_packet(struct pfi_kif *, struct mbuf *, sa_family_t, u_int8_t, 1640 u_int8_t, struct pf_rule *, struct pf_rule *, struct pf_ruleset *, 1641 struct pf_pdesc *); 1642int pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *, 1643 struct pf_addr *, sa_family_t); 1644int pf_match(u_int8_t, u_int32_t, u_int32_t, u_int32_t); 1645int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t); 1646int pf_match_uid(u_int8_t, uid_t, uid_t, uid_t); 1647int pf_match_gid(u_int8_t, gid_t, gid_t, gid_t); 1648 1649void pf_normalize_init(void); 1650int pf_normalize_ip(struct mbuf **, int, struct pfi_kif *, u_short *, 1651 struct pf_pdesc *); 1652int pf_normalize_ip6(struct mbuf **, int, struct pfi_kif *, u_short *, 1653 struct pf_pdesc *); 1654int pf_normalize_tcp(int, struct pfi_kif *, struct mbuf *, int, int, void *, 1655 struct pf_pdesc *); 1656void pf_normalize_tcp_cleanup(struct pf_state *); 1657int pf_normalize_tcp_init(struct mbuf *, int, struct pf_pdesc *, 1658 struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *); 1659int pf_normalize_tcp_stateful(struct mbuf *, int, struct pf_pdesc *, 1660 u_short *, struct tcphdr *, struct pf_state *, 1661 struct pf_state_peer *, struct pf_state_peer *, int *); 1662u_int32_t 1663 pf_state_expires(const struct pf_state *); 1664void pf_purge_expired_fragments(void); 1665int pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kif *); 1666int pf_rtlabel_match(struct pf_addr *, sa_family_t, struct pf_addr_wrap *); 1667#ifdef __FreeBSD__ 1668int pf_socket_lookup(int, struct pf_pdesc *, struct inpcb *); 1669#else 1670int pf_socket_lookup(int, struct pf_pdesc *); 1671#endif 1672void pfr_initialize(void); 1673int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t); 1674void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t, 1675 u_int64_t, int, int, int); 1676int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, 1677 struct pf_addr **, struct pf_addr **, sa_family_t); 1678void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *); 1679struct pfr_ktable * 1680 pfr_attach_table(struct pf_ruleset *, char *); 1681void pfr_detach_table(struct pfr_ktable *); 1682int pfr_clr_tables(struct pfr_table *, int *, int); 1683int pfr_add_tables(struct pfr_table *, int, int *, int); 1684int pfr_del_tables(struct pfr_table *, int, int *, int); 1685int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int); 1686int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int); 1687int pfr_clr_tstats(struct pfr_table *, int, int *, int); 1688int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int); 1689int pfr_clr_addrs(struct pfr_table *, int *, int); 1690int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *, long); 1691int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1692 int); 1693int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1694 int); 1695int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1696 int *, int *, int *, int, u_int32_t); 1697int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int); 1698int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int); 1699int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *, 1700 int); 1701int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1702 int); 1703int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int); 1704int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int); 1705int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int); 1706int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *, 1707 int *, u_int32_t, int); 1708 1709extern struct pfi_statehead pfi_statehead; 1710extern struct pfi_kif *pfi_all; 1711 1712void pfi_initialize(void); 1713#ifdef __FreeBSD__ 1714void pfi_cleanup(void); 1715#endif 1716struct pfi_kif *pfi_kif_get(const char *); 1717void pfi_kif_ref(struct pfi_kif *, enum pfi_kif_refs); 1718void pfi_kif_unref(struct pfi_kif *, enum pfi_kif_refs); 1719int pfi_kif_match(struct pfi_kif *, struct pfi_kif *); 1720void pfi_attach_ifnet(struct ifnet *); 1721void pfi_detach_ifnet(struct ifnet *); 1722void pfi_attach_ifgroup(struct ifg_group *); 1723void pfi_detach_ifgroup(struct ifg_group *); 1724void pfi_group_change(const char *); 1725int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *, 1726 sa_family_t); 1727int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t); 1728void pfi_dynaddr_remove(struct pf_addr_wrap *); 1729void pfi_dynaddr_copyout(struct pf_addr_wrap *); 1730void pfi_fill_oldstatus(struct pf_status *); 1731int pfi_clr_istats(const char *); 1732int pfi_get_ifaces(const char *, struct pfi_kif *, int *); 1733int pfi_set_flags(const char *, int); 1734int pfi_clear_flags(const char *, int); 1735 1736u_int16_t pf_tagname2tag(char *); 1737void pf_tag2tagname(u_int16_t, char *); 1738void pf_tag_ref(u_int16_t); 1739void pf_tag_unref(u_int16_t); 1740int pf_tag_packet(struct mbuf *, struct pf_mtag *, int, int); 1741u_int32_t pf_qname2qid(char *); 1742void pf_qid2qname(u_int32_t, char *); 1743void pf_qid_unref(u_int32_t); 1744#ifndef __FreeBSD__ 1745struct pf_mtag *pf_find_mtag(struct mbuf *); 1746struct pf_mtag *pf_get_mtag(struct mbuf *); 1747#endif 1748 1749extern struct pf_status pf_status; 1750 1751#ifdef __FreeBSD__ 1752extern uma_zone_t pf_frent_pl, pf_frag_pl; 1753extern struct sx pf_consistency_lock; 1754#else 1755extern struct pool pf_frent_pl, pf_frag_pl; 1756extern struct rwlock pf_consistency_lock; 1757#endif 1758 1759struct pf_pool_limit { 1760 void *pp; 1761 unsigned limit; 1762}; 1763extern struct pf_pool_limit pf_pool_limits[PF_LIMIT_MAX]; 1764 1765#ifdef __FreeBSD__ 1766struct pf_frent { 1767 LIST_ENTRY(pf_frent) fr_next; 1768 struct ip *fr_ip; 1769 struct mbuf *fr_m; 1770}; 1771 1772struct pf_frcache { 1773 LIST_ENTRY(pf_frcache) fr_next; 1774 uint16_t fr_off; 1775 uint16_t fr_end; 1776}; 1777 1778struct pf_fragment { 1779 RB_ENTRY(pf_fragment) fr_entry; 1780 TAILQ_ENTRY(pf_fragment) frag_next; 1781 struct in_addr fr_src; 1782 struct in_addr fr_dst; 1783 u_int8_t fr_p; /* protocol of this fragment */ 1784 u_int8_t fr_flags; /* status flags */ 1785 u_int16_t fr_id; /* fragment id for reassemble */ 1786 u_int16_t fr_max; /* fragment data max */ 1787 u_int32_t fr_timeout; 1788#define fr_queue fr_u.fru_queue 1789#define fr_cache fr_u.fru_cache 1790 union { 1791 LIST_HEAD(pf_fragq, pf_frent) fru_queue; /* buffering */ 1792 LIST_HEAD(pf_cacheq, pf_frcache) fru_cache; /* non-buf */ 1793 } fr_u; 1794}; 1795#endif /* (__FreeBSD__) */ 1796 1797#endif /* _KERNEL */ 1798 1799extern struct pf_anchor_global pf_anchors; 1800extern struct pf_anchor pf_main_anchor; 1801#define pf_main_ruleset pf_main_anchor.ruleset 1802 1803/* these ruleset functions can be linked into userland programs (pfctl) */ 1804int pf_get_ruleset_number(u_int8_t); 1805void pf_init_ruleset(struct pf_ruleset *); 1806int pf_anchor_setup(struct pf_rule *, 1807 const struct pf_ruleset *, const char *); 1808int pf_anchor_copyout(const struct pf_ruleset *, 1809 const struct pf_rule *, struct pfioc_rule *); 1810void pf_anchor_remove(struct pf_rule *); 1811void pf_remove_if_empty_ruleset(struct pf_ruleset *); 1812struct pf_anchor *pf_find_anchor(const char *); 1813struct pf_ruleset *pf_find_ruleset(const char *); 1814struct pf_ruleset *pf_find_or_create_ruleset(const char *); 1815void pf_rs_initialize(void); 1816 1817#ifndef __FreeBSD__ 1818/* ?!? */ 1819#ifdef _KERNEL 1820int pf_anchor_copyout(const struct pf_ruleset *, 1821 const struct pf_rule *, struct pfioc_rule *); 1822void pf_anchor_remove(struct pf_rule *); 1823 1824#endif /* _KERNEL */ 1825#endif 1826 1827/* The fingerprint functions can be linked into userland programs (tcpdump) */ 1828int pf_osfp_add(struct pf_osfp_ioctl *); 1829#ifdef _KERNEL 1830struct pf_osfp_enlist * 1831 pf_osfp_fingerprint(struct pf_pdesc *, struct mbuf *, int, 1832 const struct tcphdr *); 1833#endif /* _KERNEL */ 1834struct pf_osfp_enlist * 1835 pf_osfp_fingerprint_hdr(const struct ip *, const struct ip6_hdr *, 1836 const struct tcphdr *); 1837void pf_osfp_flush(void); 1838int pf_osfp_get(struct pf_osfp_ioctl *); 1839#ifdef __FreeBSD__ 1840int pf_osfp_initialize(void); 1841void pf_osfp_cleanup(void); 1842#else 1843void pf_osfp_initialize(void); 1844#endif 1845int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t); 1846struct pf_os_fingerprint * 1847 pf_osfp_validate(void); 1848 1849 1850#endif /* _NET_PFVAR_H_ */ 1851