pfvar.h revision 177700
1160072Simp/* $FreeBSD: head/sys/contrib/pf/net/pfvar.h 177700 2008-03-29 00:24:36Z mlaier $ */ 2160072Simp/* $OpenBSD: pfvar.h,v 1.244 2007/02/23 21:31:51 deraadt Exp $ */ 3160072Simp 4160072Simp/* 5160072Simp * Copyright (c) 2001 Daniel Hartmeier 6160072Simp * All rights reserved. 7160072Simp * 8160072Simp * Redistribution and use in source and binary forms, with or without 9160072Simp * modification, are permitted provided that the following conditions 10160072Simp * are met: 11160072Simp * 12160072Simp * - Redistributions of source code must retain the above copyright 13185265Simp * notice, this list of conditions and the following disclaimer. 14185265Simp * - Redistributions in binary form must reproduce the above 15185265Simp * copyright notice, this list of conditions and the following 16185265Simp * disclaimer in the documentation and/or other materials provided 17185265Simp * with the distribution. 18185265Simp * 19185265Simp * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 20185265Simp * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 21185265Simp * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 22185265Simp * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 23185265Simp * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 24160072Simp * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 25160072Simp * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 26160072Simp * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 27160072Simp * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28160072Simp * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 29236080Smarius * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30160072Simp * POSSIBILITY OF SUCH DAMAGE. 31236080Smarius * 32236080Smarius */ 33236080Smarius 34236080Smarius#ifndef _NET_PFVAR_H_ 35160072Simp#define _NET_PFVAR_H_ 36160072Simp 37160363Simp#include <sys/param.h> 38236080Smarius#include <sys/types.h> 39160072Simp#include <sys/queue.h> 40160072Simp#include <sys/tree.h> 41181884Simp#ifdef __FreeBSD__ 42236080Smarius#include <sys/lock.h> 43236080Smarius#include <sys/sx.h> 44236080Smarius#else 45236080Smarius#include <sys/rwlock.h> 46181884Simp#endif 47160072Simp 48160072Simp#include <net/radix.h> 49#include <net/route.h> 50#ifdef __FreeBSD__ 51#include <net/if_clone.h> 52#include <net/pf_mtag.h> 53#include <vm/uma.h> 54#else 55#include <netinet/ip_ipsp.h> 56#endif 57 58#ifdef __FreeBSD__ 59#include <netinet/in.h> 60#endif 61 62#include <netinet/tcp_fsm.h> 63 64struct ip; 65struct ip6_hdr; 66#ifdef __FreeBSD__ 67struct inpcb; 68#endif 69 70#define PF_TCPS_PROXY_SRC ((TCP_NSTATES)+0) 71#define PF_TCPS_PROXY_DST ((TCP_NSTATES)+1) 72 73#define PF_MD5_DIGEST_LENGTH 16 74#ifdef MD5_DIGEST_LENGTH 75#if PF_MD5_DIGEST_LENGTH != MD5_DIGEST_LENGTH 76#error 77#endif 78#endif 79 80enum { PF_INOUT, PF_IN, PF_OUT }; 81enum { PF_LAN_EXT, PF_EXT_GWY, PF_ID }; 82enum { PF_PASS, PF_DROP, PF_SCRUB, PF_NOSCRUB, PF_NAT, PF_NONAT, 83 PF_BINAT, PF_NOBINAT, PF_RDR, PF_NORDR, PF_SYNPROXY_DROP }; 84enum { PF_RULESET_SCRUB, PF_RULESET_FILTER, PF_RULESET_NAT, 85 PF_RULESET_BINAT, PF_RULESET_RDR, PF_RULESET_MAX }; 86enum { PF_OP_NONE, PF_OP_IRG, PF_OP_EQ, PF_OP_NE, PF_OP_LT, 87 PF_OP_LE, PF_OP_GT, PF_OP_GE, PF_OP_XRG, PF_OP_RRG }; 88enum { PF_DEBUG_NONE, PF_DEBUG_URGENT, PF_DEBUG_MISC, PF_DEBUG_NOISY }; 89enum { PF_CHANGE_NONE, PF_CHANGE_ADD_HEAD, PF_CHANGE_ADD_TAIL, 90 PF_CHANGE_ADD_BEFORE, PF_CHANGE_ADD_AFTER, 91 PF_CHANGE_REMOVE, PF_CHANGE_GET_TICKET }; 92enum { PF_GET_NONE, PF_GET_CLR_CNTR }; 93 94/* 95 * Note about PFTM_*: real indices into pf_rule.timeout[] come before 96 * PFTM_MAX, special cases afterwards. See pf_state_expires(). 97 */ 98enum { PFTM_TCP_FIRST_PACKET, PFTM_TCP_OPENING, PFTM_TCP_ESTABLISHED, 99 PFTM_TCP_CLOSING, PFTM_TCP_FIN_WAIT, PFTM_TCP_CLOSED, 100 PFTM_UDP_FIRST_PACKET, PFTM_UDP_SINGLE, PFTM_UDP_MULTIPLE, 101 PFTM_ICMP_FIRST_PACKET, PFTM_ICMP_ERROR_REPLY, 102 PFTM_OTHER_FIRST_PACKET, PFTM_OTHER_SINGLE, 103 PFTM_OTHER_MULTIPLE, PFTM_FRAG, PFTM_INTERVAL, 104 PFTM_ADAPTIVE_START, PFTM_ADAPTIVE_END, PFTM_SRC_NODE, 105 PFTM_TS_DIFF, PFTM_MAX, PFTM_PURGE, PFTM_UNLINKED, 106 PFTM_UNTIL_PACKET }; 107 108/* PFTM default values */ 109#define PFTM_TCP_FIRST_PACKET_VAL 120 /* First TCP packet */ 110#define PFTM_TCP_OPENING_VAL 30 /* No response yet */ 111#define PFTM_TCP_ESTABLISHED_VAL 24*60*60/* Established */ 112#define PFTM_TCP_CLOSING_VAL 15 * 60 /* Half closed */ 113#define PFTM_TCP_FIN_WAIT_VAL 45 /* Got both FINs */ 114#define PFTM_TCP_CLOSED_VAL 90 /* Got a RST */ 115#define PFTM_UDP_FIRST_PACKET_VAL 60 /* First UDP packet */ 116#define PFTM_UDP_SINGLE_VAL 30 /* Unidirectional */ 117#define PFTM_UDP_MULTIPLE_VAL 60 /* Bidirectional */ 118#define PFTM_ICMP_FIRST_PACKET_VAL 20 /* First ICMP packet */ 119#define PFTM_ICMP_ERROR_REPLY_VAL 10 /* Got error response */ 120#define PFTM_OTHER_FIRST_PACKET_VAL 60 /* First packet */ 121#define PFTM_OTHER_SINGLE_VAL 30 /* Unidirectional */ 122#define PFTM_OTHER_MULTIPLE_VAL 60 /* Bidirectional */ 123#define PFTM_FRAG_VAL 30 /* Fragment expire */ 124#define PFTM_INTERVAL_VAL 10 /* Expire interval */ 125#define PFTM_SRC_NODE_VAL 0 /* Source tracking */ 126#define PFTM_TS_DIFF_VAL 30 /* Allowed TS diff */ 127 128enum { PF_NOPFROUTE, PF_FASTROUTE, PF_ROUTETO, PF_DUPTO, PF_REPLYTO }; 129enum { PF_LIMIT_STATES, PF_LIMIT_SRC_NODES, PF_LIMIT_FRAGS, 130 PF_LIMIT_TABLES, PF_LIMIT_TABLE_ENTRIES, PF_LIMIT_MAX }; 131#define PF_POOL_IDMASK 0x0f 132enum { PF_POOL_NONE, PF_POOL_BITMASK, PF_POOL_RANDOM, 133 PF_POOL_SRCHASH, PF_POOL_ROUNDROBIN }; 134enum { PF_ADDR_ADDRMASK, PF_ADDR_NOROUTE, PF_ADDR_DYNIFTL, 135 PF_ADDR_TABLE, PF_ADDR_RTLABEL, PF_ADDR_URPFFAILED }; 136#define PF_POOL_TYPEMASK 0x0f 137#define PF_POOL_STICKYADDR 0x20 138#define PF_WSCALE_FLAG 0x80 139#define PF_WSCALE_MASK 0x0f 140 141#define PF_LOG 0x01 142#define PF_LOG_ALL 0x02 143#define PF_LOG_SOCKET_LOOKUP 0x04 144 145struct pf_addr { 146 union { 147 struct in_addr v4; 148 struct in6_addr v6; 149 u_int8_t addr8[16]; 150 u_int16_t addr16[8]; 151 u_int32_t addr32[4]; 152 } pfa; /* 128-bit address */ 153#define v4 pfa.v4 154#define v6 pfa.v6 155#define addr8 pfa.addr8 156#define addr16 pfa.addr16 157#define addr32 pfa.addr32 158}; 159 160#define PF_TABLE_NAME_SIZE 32 161 162#define PFI_AFLAG_NETWORK 0x01 163#define PFI_AFLAG_BROADCAST 0x02 164#define PFI_AFLAG_PEER 0x04 165#define PFI_AFLAG_MODEMASK 0x07 166#define PFI_AFLAG_NOALIAS 0x08 167 168struct pf_addr_wrap { 169 union { 170 struct { 171 struct pf_addr addr; 172 struct pf_addr mask; 173 } a; 174 char ifname[IFNAMSIZ]; 175 char tblname[PF_TABLE_NAME_SIZE]; 176#ifdef __FreeBSD__ 177#define RTLABEL_LEN 32 178#endif 179 char rtlabelname[RTLABEL_LEN]; 180 u_int32_t rtlabel; 181 } v; 182 union { 183 struct pfi_dynaddr *dyn; 184 struct pfr_ktable *tbl; 185 int dyncnt; 186 int tblcnt; 187 } p; 188 u_int8_t type; /* PF_ADDR_* */ 189 u_int8_t iflags; /* PFI_AFLAG_* */ 190}; 191 192#ifdef _KERNEL 193 194struct pfi_dynaddr { 195 TAILQ_ENTRY(pfi_dynaddr) entry; 196 struct pf_addr pfid_addr4; 197 struct pf_addr pfid_mask4; 198 struct pf_addr pfid_addr6; 199 struct pf_addr pfid_mask6; 200 struct pfr_ktable *pfid_kt; 201 struct pfi_kif *pfid_kif; 202 void *pfid_hook_cookie; 203 int pfid_net; /* mask or 128 */ 204 int pfid_acnt4; /* address count IPv4 */ 205 int pfid_acnt6; /* address count IPv6 */ 206 sa_family_t pfid_af; /* rule af */ 207 u_int8_t pfid_iflags; /* PFI_AFLAG_* */ 208}; 209 210/* 211 * Address manipulation macros 212 */ 213 214#ifdef __FreeBSD__ 215#define splsoftnet() splnet() 216 217#define HTONL(x) (x) = htonl((__uint32_t)(x)) 218#define HTONS(x) (x) = htons((__uint16_t)(x)) 219#define NTOHL(x) (x) = ntohl((__uint32_t)(x)) 220#define NTOHS(x) (x) = ntohs((__uint16_t)(x)) 221 222#define PF_NAME "pf" 223 224#define PR_NOWAIT M_NOWAIT 225#define 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 spare1; /* netgraph */ 628 u_int32_t max_src_conn; 629 struct { 630 u_int32_t limit; 631 u_int32_t seconds; 632 } max_src_conn_rate; 633 u_int32_t qid; 634 u_int32_t pqid; 635 u_int32_t rt_listid; 636 u_int32_t nr; 637 u_int32_t prob; 638 uid_t cuid; 639 pid_t cpid; 640 641 u_int16_t return_icmp; 642 u_int16_t return_icmp6; 643 u_int16_t max_mss; 644 u_int16_t tag; 645 u_int16_t match_tag; 646 u_int16_t spare2; /* netgraph */ 647 648 struct pf_rule_uid uid; 649 struct pf_rule_gid gid; 650 651 u_int32_t rule_flag; 652 u_int8_t action; 653 u_int8_t direction; 654 u_int8_t log; 655 u_int8_t logif; 656 u_int8_t quick; 657 u_int8_t ifnot; 658 u_int8_t match_tag_not; 659 u_int8_t natpass; 660 661#define PF_STATE_NORMAL 0x1 662#define PF_STATE_MODULATE 0x2 663#define PF_STATE_SYNPROXY 0x3 664 u_int8_t keep_state; 665 sa_family_t af; 666 u_int8_t proto; 667 u_int8_t type; 668 u_int8_t code; 669 u_int8_t flags; 670 u_int8_t flagset; 671 u_int8_t min_ttl; 672 u_int8_t allow_opts; 673 u_int8_t rt; 674 u_int8_t return_ttl; 675 u_int8_t tos; 676 u_int8_t anchor_relative; 677 u_int8_t anchor_wildcard; 678 679#define PF_FLUSH 0x01 680#define PF_FLUSH_GLOBAL 0x02 681 u_int8_t flush; 682}; 683 684/* rule flags */ 685#define PFRULE_DROP 0x0000 686#define PFRULE_RETURNRST 0x0001 687#define PFRULE_FRAGMENT 0x0002 688#define PFRULE_RETURNICMP 0x0004 689#define PFRULE_RETURN 0x0008 690#define PFRULE_NOSYNC 0x0010 691#define PFRULE_SRCTRACK 0x0020 /* track source states */ 692#define PFRULE_RULESRCTRACK 0x0040 /* per rule */ 693 694/* scrub flags */ 695#define PFRULE_NODF 0x0100 696#define PFRULE_FRAGCROP 0x0200 /* non-buffering frag cache */ 697#define PFRULE_FRAGDROP 0x0400 /* drop funny fragments */ 698#define PFRULE_RANDOMID 0x0800 699#define PFRULE_REASSEMBLE_TCP 0x1000 700 701/* rule flags again */ 702#define PFRULE_IFBOUND 0x00010000 /* if-bound */ 703 704#define PFSTATE_HIWAT 10000 /* default state table size */ 705#define PFSTATE_ADAPT_START 6000 /* default adaptive timeout start */ 706#define PFSTATE_ADAPT_END 12000 /* default adaptive timeout end */ 707 708 709struct pf_threshold { 710 u_int32_t limit; 711#define PF_THRESHOLD_MULT 1000 712#define PF_THRESHOLD_MAX 0xffffffff / PF_THRESHOLD_MULT 713 u_int32_t seconds; 714 u_int32_t count; 715 u_int32_t last; 716}; 717 718struct pf_src_node { 719 RB_ENTRY(pf_src_node) entry; 720 struct pf_addr addr; 721 struct pf_addr raddr; 722 union pf_rule_ptr rule; 723 struct pfi_kif *kif; 724 u_int64_t bytes[2]; 725 u_int64_t packets[2]; 726 u_int32_t states; 727 u_int32_t conn; 728 struct pf_threshold conn_rate; 729 u_int32_t creation; 730 u_int32_t expire; 731 sa_family_t af; 732 u_int8_t ruletype; 733}; 734 735#define PFSNODE_HIWAT 10000 /* default source node table size */ 736 737struct pf_state_scrub { 738 struct timeval pfss_last; /* time received last packet */ 739 u_int32_t pfss_tsecr; /* last echoed timestamp */ 740 u_int32_t pfss_tsval; /* largest timestamp */ 741 u_int32_t pfss_tsval0; /* original timestamp */ 742 u_int16_t pfss_flags; 743#define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */ 744#define PFSS_PAWS 0x0010 /* stricter PAWS checks */ 745#define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */ 746#define PFSS_DATA_TS 0x0040 /* timestamp on data packets */ 747#define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */ 748 u_int8_t pfss_ttl; /* stashed TTL */ 749 u_int8_t pad; 750 u_int32_t pfss_ts_mod; /* timestamp modulation */ 751}; 752 753struct pf_state_host { 754 struct pf_addr addr; 755 u_int16_t port; 756 u_int16_t pad; 757}; 758 759struct pf_state_peer { 760 u_int32_t seqlo; /* Max sequence number sent */ 761 u_int32_t seqhi; /* Max the other end ACKd + win */ 762 u_int32_t seqdiff; /* Sequence number modulator */ 763 u_int16_t max_win; /* largest window (pre scaling) */ 764 u_int8_t state; /* active state level */ 765 u_int8_t wscale; /* window scaling factor */ 766 u_int16_t mss; /* Maximum segment size option */ 767 u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */ 768 struct pf_state_scrub *scrub; /* state is scrubbed */ 769 u_int8_t pad[3]; 770}; 771 772TAILQ_HEAD(pf_state_queue, pf_state); 773 774/* keep synced with struct pf_state, used in RB_FIND */ 775struct pf_state_cmp { 776 u_int64_t id; 777 u_int32_t creatorid; 778 struct pf_state_host lan; 779 struct pf_state_host gwy; 780 struct pf_state_host ext; 781 sa_family_t af; 782 u_int8_t proto; 783 u_int8_t direction; 784 u_int8_t pad; 785}; 786 787struct pf_state { 788 u_int64_t id; 789 u_int32_t creatorid; 790 struct pf_state_host lan; 791 struct pf_state_host gwy; 792 struct pf_state_host ext; 793 sa_family_t af; 794 u_int8_t proto; 795 u_int8_t direction; 796#ifdef __FreeBSD__ 797 u_int8_t local_flags; 798#define PFSTATE_EXPIRING 0x01 799#else 800 u_int8_t pad; 801#endif 802 u_int8_t log; 803 u_int8_t allow_opts; 804 u_int8_t timeout; 805 u_int8_t sync_flags; 806#define PFSTATE_NOSYNC 0x01 807#define PFSTATE_FROMSYNC 0x02 808#define PFSTATE_STALE 0x04 809 union { 810 struct { 811 RB_ENTRY(pf_state) entry_lan_ext; 812 RB_ENTRY(pf_state) entry_ext_gwy; 813 RB_ENTRY(pf_state) entry_id; 814 TAILQ_ENTRY(pf_state) entry_list; 815 struct pfi_kif *kif; 816 } s; 817 char ifname[IFNAMSIZ]; 818 } u; 819 struct pf_state_peer src; 820 struct pf_state_peer dst; 821 union pf_rule_ptr rule; 822 union pf_rule_ptr anchor; 823 union pf_rule_ptr nat_rule; 824 struct pf_addr rt_addr; 825 struct pfi_kif *rt_kif; 826 struct pf_src_node *src_node; 827 struct pf_src_node *nat_src_node; 828 u_int64_t packets[2]; 829 u_int64_t bytes[2]; 830 u_int32_t creation; 831 u_int32_t expire; 832 u_int32_t pfsync_time; 833 u_int16_t tag; 834}; 835 836TAILQ_HEAD(pf_rulequeue, pf_rule); 837 838struct pf_anchor; 839 840struct pf_ruleset { 841 struct { 842 struct pf_rulequeue queues[2]; 843 struct { 844 struct pf_rulequeue *ptr; 845 struct pf_rule **ptr_array; 846 u_int32_t rcount; 847 u_int32_t ticket; 848 int open; 849 } active, inactive; 850 } rules[PF_RULESET_MAX]; 851 struct pf_anchor *anchor; 852 u_int32_t tticket; 853 int tables; 854 int topen; 855}; 856 857RB_HEAD(pf_anchor_global, pf_anchor); 858RB_HEAD(pf_anchor_node, pf_anchor); 859struct pf_anchor { 860 RB_ENTRY(pf_anchor) entry_global; 861 RB_ENTRY(pf_anchor) entry_node; 862 struct pf_anchor *parent; 863 struct pf_anchor_node children; 864 char name[PF_ANCHOR_NAME_SIZE]; 865 char path[MAXPATHLEN]; 866 struct pf_ruleset ruleset; 867 int refcnt; /* anchor rules */ 868 int match; 869}; 870RB_PROTOTYPE(pf_anchor_global, pf_anchor, entry_global, pf_anchor_compare); 871RB_PROTOTYPE(pf_anchor_node, pf_anchor, entry_node, pf_anchor_compare); 872 873#define PF_RESERVED_ANCHOR "_pf" 874 875#define PFR_TFLAG_PERSIST 0x00000001 876#define PFR_TFLAG_CONST 0x00000002 877#define PFR_TFLAG_ACTIVE 0x00000004 878#define PFR_TFLAG_INACTIVE 0x00000008 879#define PFR_TFLAG_REFERENCED 0x00000010 880#define PFR_TFLAG_REFDANCHOR 0x00000020 881#define PFR_TFLAG_USRMASK 0x00000003 882#define PFR_TFLAG_SETMASK 0x0000003C 883#define PFR_TFLAG_ALLMASK 0x0000003F 884 885struct pfr_table { 886 char pfrt_anchor[MAXPATHLEN]; 887 char pfrt_name[PF_TABLE_NAME_SIZE]; 888 u_int32_t pfrt_flags; 889 u_int8_t pfrt_fback; 890}; 891 892enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED, 893 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE, 894 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_MAX }; 895 896struct pfr_addr { 897 union { 898 struct in_addr _pfra_ip4addr; 899 struct in6_addr _pfra_ip6addr; 900 } pfra_u; 901 u_int8_t pfra_af; 902 u_int8_t pfra_net; 903 u_int8_t pfra_not; 904 u_int8_t pfra_fback; 905}; 906#define pfra_ip4addr pfra_u._pfra_ip4addr 907#define pfra_ip6addr pfra_u._pfra_ip6addr 908 909enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX }; 910enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX }; 911#define PFR_OP_XPASS PFR_OP_ADDR_MAX 912 913struct pfr_astats { 914 struct pfr_addr pfras_a; 915 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 916 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 917 long pfras_tzero; 918}; 919 920enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX }; 921 922struct pfr_tstats { 923 struct pfr_table pfrts_t; 924 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 925 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 926 u_int64_t pfrts_match; 927 u_int64_t pfrts_nomatch; 928 long pfrts_tzero; 929 int pfrts_cnt; 930 int pfrts_refcnt[PFR_REFCNT_MAX]; 931}; 932#define pfrts_name pfrts_t.pfrt_name 933#define pfrts_flags pfrts_t.pfrt_flags 934 935#ifndef _SOCKADDR_UNION_DEFINED 936#define _SOCKADDR_UNION_DEFINED 937union sockaddr_union { 938 struct sockaddr sa; 939 struct sockaddr_in sin; 940 struct sockaddr_in6 sin6; 941}; 942#endif /* _SOCKADDR_UNION_DEFINED */ 943 944SLIST_HEAD(pfr_kentryworkq, pfr_kentry); 945struct pfr_kentry { 946 struct radix_node pfrke_node[2]; 947 union sockaddr_union pfrke_sa; 948 u_int64_t pfrke_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 949 u_int64_t pfrke_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 950 SLIST_ENTRY(pfr_kentry) pfrke_workq; 951 long pfrke_tzero; 952 u_int8_t pfrke_af; 953 u_int8_t pfrke_net; 954 u_int8_t pfrke_not; 955 u_int8_t pfrke_mark; 956 u_int8_t pfrke_intrpool; 957}; 958 959SLIST_HEAD(pfr_ktableworkq, pfr_ktable); 960RB_HEAD(pfr_ktablehead, pfr_ktable); 961struct pfr_ktable { 962 struct pfr_tstats pfrkt_ts; 963 RB_ENTRY(pfr_ktable) pfrkt_tree; 964 SLIST_ENTRY(pfr_ktable) pfrkt_workq; 965 struct radix_node_head *pfrkt_ip4; 966 struct radix_node_head *pfrkt_ip6; 967 struct pfr_ktable *pfrkt_shadow; 968 struct pfr_ktable *pfrkt_root; 969 struct pf_ruleset *pfrkt_rs; 970 long pfrkt_larg; 971 int pfrkt_nflags; 972}; 973#define pfrkt_t pfrkt_ts.pfrts_t 974#define pfrkt_name pfrkt_t.pfrt_name 975#define pfrkt_anchor pfrkt_t.pfrt_anchor 976#define pfrkt_ruleset pfrkt_t.pfrt_ruleset 977#define pfrkt_flags pfrkt_t.pfrt_flags 978#define pfrkt_cnt pfrkt_ts.pfrts_cnt 979#define pfrkt_refcnt pfrkt_ts.pfrts_refcnt 980#define pfrkt_packets pfrkt_ts.pfrts_packets 981#define pfrkt_bytes pfrkt_ts.pfrts_bytes 982#define pfrkt_match pfrkt_ts.pfrts_match 983#define pfrkt_nomatch pfrkt_ts.pfrts_nomatch 984#define pfrkt_tzero pfrkt_ts.pfrts_tzero 985 986RB_HEAD(pf_state_tree_lan_ext, pf_state); 987RB_PROTOTYPE(pf_state_tree_lan_ext, pf_state, 988 u.s.entry_lan_ext, pf_state_compare_lan_ext); 989 990RB_HEAD(pf_state_tree_ext_gwy, pf_state); 991RB_PROTOTYPE(pf_state_tree_ext_gwy, pf_state, 992 u.s.entry_ext_gwy, pf_state_compare_ext_gwy); 993 994TAILQ_HEAD(pfi_statehead, pfi_kif); 995RB_HEAD(pfi_ifhead, pfi_kif); 996 997/* keep synced with pfi_kif, used in RB_FIND */ 998struct pfi_kif_cmp { 999 char pfik_name[IFNAMSIZ]; 1000}; 1001 1002struct pfi_kif { 1003 char pfik_name[IFNAMSIZ]; 1004 RB_ENTRY(pfi_kif) pfik_tree; 1005 u_int64_t pfik_packets[2][2][2]; 1006 u_int64_t pfik_bytes[2][2][2]; 1007 u_int32_t pfik_tzero; 1008 int pfik_flags; 1009 struct pf_state_tree_lan_ext pfik_lan_ext; 1010 struct pf_state_tree_ext_gwy pfik_ext_gwy; 1011 TAILQ_ENTRY(pfi_kif) pfik_w_states; 1012#ifndef __FreeBSD__ 1013 void *pfik_ah_cookie; 1014#endif 1015 struct ifnet *pfik_ifp; 1016 struct ifg_group *pfik_group; 1017 int pfik_states; 1018 int pfik_rules; 1019 TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs; 1020}; 1021 1022enum pfi_kif_refs { 1023 PFI_KIF_REF_NONE, 1024 PFI_KIF_REF_STATE, 1025 PFI_KIF_REF_RULE 1026}; 1027 1028#define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */ 1029/* XXX: revisist */ 1030#define PFI_IFLAG_SETABLE_MASK 0x0100 /* setable via DIOC{SET,CLR}IFFLAG */ 1031#define PFI_IFLAG_PLACEHOLDER 0x8000 /* placeholder group/interface */ 1032 1033struct pf_pdesc { 1034 struct { 1035 int done; 1036 uid_t uid; 1037 gid_t gid; 1038 pid_t pid; 1039 } lookup; 1040 u_int64_t tot_len; /* Make Mickey money */ 1041 union { 1042 struct tcphdr *tcp; 1043 struct udphdr *udp; 1044 struct icmp *icmp; 1045#ifdef INET6 1046 struct icmp6_hdr *icmp6; 1047#endif /* INET6 */ 1048 void *any; 1049 } hdr; 1050 struct pf_addr baddr; /* address before translation */ 1051 struct pf_addr naddr; /* address after translation */ 1052 struct pf_rule *nat_rule; /* nat/rdr rule applied to packet */ 1053 struct pf_addr *src; 1054 struct pf_addr *dst; 1055 struct ether_header 1056 *eh; 1057 struct pf_mtag *pf_mtag; 1058 u_int16_t *ip_sum; 1059 u_int32_t p_len; /* total length of payload */ 1060 u_int16_t flags; /* Let SCRUB trigger behavior in 1061 * state code. Easier than tags */ 1062#define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */ 1063#define PFDESC_IP_REAS 0x0002 /* IP frags would've been reassembled */ 1064 sa_family_t af; 1065 u_int8_t proto; 1066 u_int8_t tos; 1067}; 1068 1069/* flags for RDR options */ 1070#define PF_DPORT_RANGE 0x01 /* Dest port uses range */ 1071#define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */ 1072 1073/* Reasons code for passing/dropping a packet */ 1074#define PFRES_MATCH 0 /* Explicit match of a rule */ 1075#define PFRES_BADOFF 1 /* Bad offset for pull_hdr */ 1076#define PFRES_FRAG 2 /* Dropping following fragment */ 1077#define PFRES_SHORT 3 /* Dropping short packet */ 1078#define PFRES_NORM 4 /* Dropping by normalizer */ 1079#define PFRES_MEMORY 5 /* Dropped due to lacking mem */ 1080#define PFRES_TS 6 /* Bad TCP Timestamp (RFC1323) */ 1081#define PFRES_CONGEST 7 /* Congestion (of ipintrq) */ 1082#define PFRES_IPOPTIONS 8 /* IP option */ 1083#define PFRES_PROTCKSUM 9 /* Protocol checksum invalid */ 1084#define PFRES_BADSTATE 10 /* State mismatch */ 1085#define PFRES_STATEINS 11 /* State insertion failure */ 1086#define PFRES_MAXSTATES 12 /* State limit */ 1087#define PFRES_SRCLIMIT 13 /* Source node/conn limit */ 1088#define PFRES_SYNPROXY 14 /* SYN proxy */ 1089#define PFRES_MAX 15 /* total+1 */ 1090 1091#define PFRES_NAMES { \ 1092 "match", \ 1093 "bad-offset", \ 1094 "fragment", \ 1095 "short", \ 1096 "normalize", \ 1097 "memory", \ 1098 "bad-timestamp", \ 1099 "congestion", \ 1100 "ip-option", \ 1101 "proto-cksum", \ 1102 "state-mismatch", \ 1103 "state-insert", \ 1104 "state-limit", \ 1105 "src-limit", \ 1106 "synproxy", \ 1107 NULL \ 1108} 1109 1110/* Counters for other things we want to keep track of */ 1111#define LCNT_STATES 0 /* states */ 1112#define LCNT_SRCSTATES 1 /* max-src-states */ 1113#define LCNT_SRCNODES 2 /* max-src-nodes */ 1114#define LCNT_SRCCONN 3 /* max-src-conn */ 1115#define LCNT_SRCCONNRATE 4 /* max-src-conn-rate */ 1116#define LCNT_OVERLOAD_TABLE 5 /* entry added to overload table */ 1117#define LCNT_OVERLOAD_FLUSH 6 /* state entries flushed */ 1118#define LCNT_MAX 7 /* total+1 */ 1119 1120#define LCNT_NAMES { \ 1121 "max states per rule", \ 1122 "max-src-states", \ 1123 "max-src-nodes", \ 1124 "max-src-conn", \ 1125 "max-src-conn-rate", \ 1126 "overload table insertion", \ 1127 "overload flush states", \ 1128 NULL \ 1129} 1130 1131/* UDP state enumeration */ 1132#define PFUDPS_NO_TRAFFIC 0 1133#define PFUDPS_SINGLE 1 1134#define PFUDPS_MULTIPLE 2 1135 1136#define PFUDPS_NSTATES 3 /* number of state levels */ 1137 1138#define PFUDPS_NAMES { \ 1139 "NO_TRAFFIC", \ 1140 "SINGLE", \ 1141 "MULTIPLE", \ 1142 NULL \ 1143} 1144 1145/* Other protocol state enumeration */ 1146#define PFOTHERS_NO_TRAFFIC 0 1147#define PFOTHERS_SINGLE 1 1148#define PFOTHERS_MULTIPLE 2 1149 1150#define PFOTHERS_NSTATES 3 /* number of state levels */ 1151 1152#define PFOTHERS_NAMES { \ 1153 "NO_TRAFFIC", \ 1154 "SINGLE", \ 1155 "MULTIPLE", \ 1156 NULL \ 1157} 1158 1159#define FCNT_STATE_SEARCH 0 1160#define FCNT_STATE_INSERT 1 1161#define FCNT_STATE_REMOVALS 2 1162#define FCNT_MAX 3 1163 1164#define SCNT_SRC_NODE_SEARCH 0 1165#define SCNT_SRC_NODE_INSERT 1 1166#define SCNT_SRC_NODE_REMOVALS 2 1167#define SCNT_MAX 3 1168 1169#define ACTION_SET(a, x) \ 1170 do { \ 1171 if ((a) != NULL) \ 1172 *(a) = (x); \ 1173 } while (0) 1174 1175#define REASON_SET(a, x) \ 1176 do { \ 1177 if ((a) != NULL) \ 1178 *(a) = (x); \ 1179 if (x < PFRES_MAX) \ 1180 pf_status.counters[x]++; \ 1181 } while (0) 1182 1183struct pf_status { 1184 u_int64_t counters[PFRES_MAX]; 1185 u_int64_t lcounters[LCNT_MAX]; /* limit counters */ 1186 u_int64_t fcounters[FCNT_MAX]; 1187 u_int64_t scounters[SCNT_MAX]; 1188 u_int64_t pcounters[2][2][3]; 1189 u_int64_t bcounters[2][2]; 1190 u_int64_t stateid; 1191 u_int32_t running; 1192 u_int32_t states; 1193 u_int32_t src_nodes; 1194 u_int32_t since; 1195 u_int32_t debug; 1196 u_int32_t hostid; 1197 char ifname[IFNAMSIZ]; 1198 u_int8_t pf_chksum[PF_MD5_DIGEST_LENGTH]; 1199}; 1200 1201struct cbq_opts { 1202 u_int minburst; 1203 u_int maxburst; 1204 u_int pktsize; 1205 u_int maxpktsize; 1206 u_int ns_per_byte; 1207 u_int maxidle; 1208 int minidle; 1209 u_int offtime; 1210 int flags; 1211}; 1212 1213struct priq_opts { 1214 int flags; 1215}; 1216 1217struct hfsc_opts { 1218 /* real-time service curve */ 1219 u_int rtsc_m1; /* slope of the 1st segment in bps */ 1220 u_int rtsc_d; /* the x-projection of m1 in msec */ 1221 u_int rtsc_m2; /* slope of the 2nd segment in bps */ 1222 /* link-sharing service curve */ 1223 u_int lssc_m1; 1224 u_int lssc_d; 1225 u_int lssc_m2; 1226 /* upper-limit service curve */ 1227 u_int ulsc_m1; 1228 u_int ulsc_d; 1229 u_int ulsc_m2; 1230 int flags; 1231}; 1232 1233struct pf_altq { 1234 char ifname[IFNAMSIZ]; 1235 1236 void *altq_disc; /* discipline-specific state */ 1237 TAILQ_ENTRY(pf_altq) entries; 1238 1239 /* scheduler spec */ 1240 u_int8_t scheduler; /* scheduler type */ 1241 u_int16_t tbrsize; /* tokenbucket regulator size */ 1242 u_int32_t ifbandwidth; /* interface bandwidth */ 1243 1244 /* queue spec */ 1245 char qname[PF_QNAME_SIZE]; /* queue name */ 1246 char parent[PF_QNAME_SIZE]; /* parent name */ 1247 u_int32_t parent_qid; /* parent queue id */ 1248 u_int32_t bandwidth; /* queue bandwidth */ 1249 u_int8_t priority; /* priority */ 1250#ifdef __FreeBSD__ 1251 u_int8_t local_flags; /* dynamic interface */ 1252#define PFALTQ_FLAG_IF_REMOVED 0x01 1253#endif 1254 u_int16_t qlimit; /* queue size limit */ 1255 u_int16_t flags; /* misc flags */ 1256 union { 1257 struct cbq_opts cbq_opts; 1258 struct priq_opts priq_opts; 1259 struct hfsc_opts hfsc_opts; 1260 } pq_u; 1261 1262 u_int32_t qid; /* return value */ 1263}; 1264 1265#ifndef __FreeBSD__ 1266 1267#define PF_TAG_GENERATED 0x01 1268#define PF_TAG_FRAGCACHE 0x02 1269#define PF_TAG_TRANSLATE_LOCALHOST 0x04 1270 1271struct pf_mtag { 1272 void *hdr; /* saved hdr pos in mbuf, for ECN */ 1273 u_int rtableid; /* alternate routing table id */ 1274 u_int32_t qid; /* queue id */ 1275 u_int16_t tag; /* tag id */ 1276 u_int8_t flags; 1277 u_int8_t routed; 1278 sa_family_t af; /* for ECN */ 1279}; 1280#endif 1281 1282struct pf_tag { 1283 u_int16_t tag; /* tag id */ 1284}; 1285 1286struct pf_tagname { 1287 TAILQ_ENTRY(pf_tagname) entries; 1288 char name[PF_TAG_NAME_SIZE]; 1289 u_int16_t tag; 1290 int ref; 1291}; 1292 1293#define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */ 1294#define PFFRAG_FRAG_HIWAT 1000 /* Number of fragmented packets */ 1295#define PFFRAG_FRCENT_HIWAT 50000 /* Number of fragment cache entries */ 1296#define PFFRAG_FRCACHE_HIWAT 10000 /* Number of fragment descriptors */ 1297 1298#define PFR_KTABLE_HIWAT 1000 /* Number of tables */ 1299#define PFR_KENTRY_HIWAT 200000 /* Number of table entries */ 1300#define PFR_KENTRY_HIWAT_SMALL 100000 /* Number of table entries (tiny hosts) */ 1301 1302/* 1303 * ioctl parameter structures 1304 */ 1305 1306struct pfioc_pooladdr { 1307 u_int32_t action; 1308 u_int32_t ticket; 1309 u_int32_t nr; 1310 u_int32_t r_num; 1311 u_int8_t r_action; 1312 u_int8_t r_last; 1313 u_int8_t af; 1314 char anchor[MAXPATHLEN]; 1315 struct pf_pooladdr addr; 1316}; 1317 1318struct pfioc_rule { 1319 u_int32_t action; 1320 u_int32_t ticket; 1321 u_int32_t pool_ticket; 1322 u_int32_t nr; 1323 char anchor[MAXPATHLEN]; 1324 char anchor_call[MAXPATHLEN]; 1325 struct pf_rule rule; 1326}; 1327 1328struct pfioc_natlook { 1329 struct pf_addr saddr; 1330 struct pf_addr daddr; 1331 struct pf_addr rsaddr; 1332 struct pf_addr rdaddr; 1333 u_int16_t sport; 1334 u_int16_t dport; 1335 u_int16_t rsport; 1336 u_int16_t rdport; 1337 sa_family_t af; 1338 u_int8_t proto; 1339 u_int8_t direction; 1340}; 1341 1342struct pfioc_state { 1343 u_int32_t nr; 1344 struct pf_state state; 1345}; 1346 1347struct pfioc_src_node_kill { 1348 /* XXX returns the number of src nodes killed in psnk_af */ 1349 sa_family_t psnk_af; 1350 struct pf_rule_addr psnk_src; 1351 struct pf_rule_addr psnk_dst; 1352}; 1353 1354struct pfioc_state_kill { 1355 /* XXX returns the number of states killed in psk_af */ 1356 sa_family_t psk_af; 1357 int psk_proto; 1358 struct pf_rule_addr psk_src; 1359 struct pf_rule_addr psk_dst; 1360 char psk_ifname[IFNAMSIZ]; 1361}; 1362 1363struct pfioc_states { 1364 int ps_len; 1365 union { 1366 caddr_t psu_buf; 1367 struct pf_state *psu_states; 1368 } ps_u; 1369#define ps_buf ps_u.psu_buf 1370#define ps_states ps_u.psu_states 1371}; 1372 1373struct pfioc_src_nodes { 1374 int psn_len; 1375 union { 1376 caddr_t psu_buf; 1377 struct pf_src_node *psu_src_nodes; 1378 } psn_u; 1379#define psn_buf psn_u.psu_buf 1380#define psn_src_nodes psn_u.psu_src_nodes 1381}; 1382 1383struct pfioc_if { 1384 char ifname[IFNAMSIZ]; 1385}; 1386 1387struct pfioc_tm { 1388 int timeout; 1389 int seconds; 1390}; 1391 1392struct pfioc_limit { 1393 int index; 1394 unsigned limit; 1395}; 1396 1397struct pfioc_altq { 1398 u_int32_t action; 1399 u_int32_t ticket; 1400 u_int32_t nr; 1401 struct pf_altq altq; 1402}; 1403 1404struct pfioc_qstats { 1405 u_int32_t ticket; 1406 u_int32_t nr; 1407 void *buf; 1408 int nbytes; 1409 u_int8_t scheduler; 1410}; 1411 1412struct pfioc_ruleset { 1413 u_int32_t nr; 1414 char path[MAXPATHLEN]; 1415 char name[PF_ANCHOR_NAME_SIZE]; 1416}; 1417 1418#define PF_RULESET_ALTQ (PF_RULESET_MAX) 1419#define PF_RULESET_TABLE (PF_RULESET_MAX+1) 1420struct pfioc_trans { 1421 int size; /* number of elements */ 1422 int esize; /* size of each element in bytes */ 1423 struct pfioc_trans_e { 1424 int rs_num; 1425 char anchor[MAXPATHLEN]; 1426 u_int32_t ticket; 1427 } *array; 1428}; 1429 1430#define PFR_FLAG_ATOMIC 0x00000001 1431#define PFR_FLAG_DUMMY 0x00000002 1432#define PFR_FLAG_FEEDBACK 0x00000004 1433#define PFR_FLAG_CLSTATS 0x00000008 1434#define PFR_FLAG_ADDRSTOO 0x00000010 1435#define PFR_FLAG_REPLACE 0x00000020 1436#define PFR_FLAG_ALLRSETS 0x00000040 1437#define PFR_FLAG_ALLMASK 0x0000007F 1438#ifdef _KERNEL 1439#define PFR_FLAG_USERIOCTL 0x10000000 1440#endif 1441 1442struct pfioc_table { 1443 struct pfr_table pfrio_table; 1444 void *pfrio_buffer; 1445 int pfrio_esize; 1446 int pfrio_size; 1447 int pfrio_size2; 1448 int pfrio_nadd; 1449 int pfrio_ndel; 1450 int pfrio_nchange; 1451 int pfrio_flags; 1452 u_int32_t pfrio_ticket; 1453}; 1454#define pfrio_exists pfrio_nadd 1455#define pfrio_nzero pfrio_nadd 1456#define pfrio_nmatch pfrio_nadd 1457#define pfrio_naddr pfrio_size2 1458#define pfrio_setflag pfrio_size2 1459#define pfrio_clrflag pfrio_nadd 1460 1461struct pfioc_iface { 1462 char pfiio_name[IFNAMSIZ]; 1463 void *pfiio_buffer; 1464 int pfiio_esize; 1465 int pfiio_size; 1466 int pfiio_nzero; 1467 int pfiio_flags; 1468}; 1469 1470 1471/* 1472 * ioctl operations 1473 */ 1474 1475#define DIOCSTART _IO ('D', 1) 1476#define DIOCSTOP _IO ('D', 2) 1477#define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule) 1478#define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule) 1479#define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule) 1480/* XXX cut 8 - 17 */ 1481#define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill) 1482#define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state) 1483#define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if) 1484#define DIOCGETSTATUS _IOWR('D', 21, struct pf_status) 1485#define DIOCCLRSTATUS _IO ('D', 22) 1486#define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook) 1487#define DIOCSETDEBUG _IOWR('D', 24, u_int32_t) 1488#define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states) 1489#define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule) 1490/* XXX cut 26 - 28 */ 1491#define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm) 1492#define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm) 1493#define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state) 1494#define DIOCCLRRULECTRS _IO ('D', 38) 1495#define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit) 1496#define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit) 1497#define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill) 1498#define DIOCSTARTALTQ _IO ('D', 42) 1499#define DIOCSTOPALTQ _IO ('D', 43) 1500#define DIOCADDALTQ _IOWR('D', 45, struct pfioc_altq) 1501#define DIOCGETALTQS _IOWR('D', 47, struct pfioc_altq) 1502#define DIOCGETALTQ _IOWR('D', 48, struct pfioc_altq) 1503#define DIOCCHANGEALTQ _IOWR('D', 49, struct pfioc_altq) 1504#define DIOCGETQSTATS _IOWR('D', 50, struct pfioc_qstats) 1505#define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr) 1506#define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr) 1507#define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr) 1508#define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr) 1509#define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr) 1510/* XXX cut 55 - 57 */ 1511#define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset) 1512#define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset) 1513#define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table) 1514#define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table) 1515#define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table) 1516#define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table) 1517#define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table) 1518#define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table) 1519#define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table) 1520#define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table) 1521#define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table) 1522#define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table) 1523#define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table) 1524#define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table) 1525#define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table) 1526#define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table) 1527#define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table) 1528#define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table) 1529#define DIOCOSFPFLUSH _IO('D', 78) 1530#define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl) 1531#define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl) 1532#define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans) 1533#define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans) 1534#define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans) 1535#define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes) 1536#define DIOCCLRSRCNODES _IO('D', 85) 1537#define DIOCSETHOSTID _IOWR('D', 86, u_int32_t) 1538#define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface) 1539#define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface) 1540#define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface) 1541#define DIOCKILLSRCNODES _IOWR('D', 91, struct pfioc_src_node_kill) 1542#ifdef __FreeBSD__ 1543struct pf_ifspeed { 1544 char ifname[IFNAMSIZ]; 1545 u_int32_t baudrate; 1546}; 1547#define DIOCGIFSPEED _IOWR('D', 92, struct pf_ifspeed) 1548#endif 1549 1550#ifdef _KERNEL 1551RB_HEAD(pf_src_tree, pf_src_node); 1552RB_PROTOTYPE(pf_src_tree, pf_src_node, entry, pf_src_compare); 1553extern struct pf_src_tree tree_src_tracking; 1554 1555RB_HEAD(pf_state_tree_id, pf_state); 1556RB_PROTOTYPE(pf_state_tree_id, pf_state, 1557 entry_id, pf_state_compare_id); 1558extern struct pf_state_tree_id tree_id; 1559extern struct pf_state_queue state_list; 1560 1561TAILQ_HEAD(pf_poolqueue, pf_pool); 1562extern struct pf_poolqueue pf_pools[2]; 1563TAILQ_HEAD(pf_altqqueue, pf_altq); 1564extern struct pf_altqqueue pf_altqs[2]; 1565extern struct pf_palist pf_pabuf; 1566 1567extern u_int32_t ticket_altqs_active; 1568extern u_int32_t ticket_altqs_inactive; 1569extern int altqs_inactive_open; 1570extern u_int32_t ticket_pabuf; 1571extern struct pf_altqqueue *pf_altqs_active; 1572extern struct pf_altqqueue *pf_altqs_inactive; 1573extern struct pf_poolqueue *pf_pools_active; 1574extern struct pf_poolqueue *pf_pools_inactive; 1575extern int pf_tbladdr_setup(struct pf_ruleset *, 1576 struct pf_addr_wrap *); 1577extern void pf_tbladdr_remove(struct pf_addr_wrap *); 1578extern void pf_tbladdr_copyout(struct pf_addr_wrap *); 1579extern void pf_calc_skip_steps(struct pf_rulequeue *); 1580#ifdef __FreeBSD__ 1581#ifdef ALTQ 1582extern void pf_altq_ifnet_event(struct ifnet *, int); 1583#endif 1584extern uma_zone_t pf_src_tree_pl, pf_rule_pl; 1585extern uma_zone_t pf_state_pl, pf_altq_pl, pf_pooladdr_pl; 1586extern uma_zone_t pfr_ktable_pl, pfr_kentry_pl, pfr_kentry_pl2; 1587extern uma_zone_t pf_cache_pl, pf_cent_pl; 1588extern uma_zone_t pf_state_scrub_pl; 1589extern uma_zone_t pfi_addr_pl; 1590#else 1591extern struct pool pf_src_tree_pl, pf_rule_pl; 1592extern struct pool pf_state_pl, pf_altq_pl, pf_pooladdr_pl; 1593extern struct pool pf_state_scrub_pl; 1594#endif 1595extern void pf_purge_thread(void *); 1596extern void pf_purge_expired_src_nodes(int); 1597extern void pf_purge_expired_states(u_int32_t); 1598extern void pf_unlink_state(struct pf_state *); 1599extern void pf_free_state(struct pf_state *); 1600extern int pf_insert_state(struct pfi_kif *, 1601 struct pf_state *); 1602extern int pf_insert_src_node(struct pf_src_node **, 1603 struct pf_rule *, struct pf_addr *, 1604 sa_family_t); 1605void pf_src_tree_remove_state(struct pf_state *); 1606extern struct pf_state *pf_find_state_byid(struct pf_state_cmp *); 1607extern struct pf_state *pf_find_state_all(struct pf_state_cmp *key, 1608 u_int8_t tree, int *more); 1609extern void pf_print_state(struct pf_state *); 1610extern void pf_print_flags(u_int8_t); 1611extern u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t, 1612 u_int8_t); 1613 1614extern struct ifnet *sync_ifp; 1615extern struct pf_rule pf_default_rule; 1616extern void pf_addrcpy(struct pf_addr *, struct pf_addr *, 1617 u_int8_t); 1618void pf_rm_rule(struct pf_rulequeue *, 1619 struct pf_rule *); 1620 1621#ifdef INET 1622#ifdef __FreeBSD__ 1623int pf_test(int, struct ifnet *, struct mbuf **, struct ether_header *, 1624 struct inpcb *); 1625#else 1626int pf_test(int, struct ifnet *, struct mbuf **, struct ether_header *); 1627#endif 1628#endif /* INET */ 1629 1630#ifdef INET6 1631#ifdef __FreeBSD__ 1632int pf_test6(int, struct ifnet *, struct mbuf **, struct ether_header *, 1633 struct inpcb *); 1634#else 1635int pf_test6(int, struct ifnet *, struct mbuf **, struct ether_header *); 1636#endif 1637void pf_poolmask(struct pf_addr *, struct pf_addr*, 1638 struct pf_addr *, struct pf_addr *, u_int8_t); 1639void pf_addr_inc(struct pf_addr *, sa_family_t); 1640#endif /* INET6 */ 1641 1642#ifdef __FreeBSD__ 1643u_int32_t pf_new_isn(struct pf_state *); 1644#endif 1645void *pf_pull_hdr(struct mbuf *, int, void *, int, u_short *, u_short *, 1646 sa_family_t); 1647void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t); 1648int pflog_packet(struct pfi_kif *, struct mbuf *, sa_family_t, u_int8_t, 1649 u_int8_t, struct pf_rule *, struct pf_rule *, struct pf_ruleset *, 1650 struct pf_pdesc *); 1651int pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *, 1652 struct pf_addr *, sa_family_t); 1653int pf_match(u_int8_t, u_int32_t, u_int32_t, u_int32_t); 1654int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t); 1655int pf_match_uid(u_int8_t, uid_t, uid_t, uid_t); 1656int pf_match_gid(u_int8_t, gid_t, gid_t, gid_t); 1657 1658void pf_normalize_init(void); 1659int pf_normalize_ip(struct mbuf **, int, struct pfi_kif *, u_short *, 1660 struct pf_pdesc *); 1661int pf_normalize_ip6(struct mbuf **, int, struct pfi_kif *, u_short *, 1662 struct pf_pdesc *); 1663int pf_normalize_tcp(int, struct pfi_kif *, struct mbuf *, int, int, void *, 1664 struct pf_pdesc *); 1665void pf_normalize_tcp_cleanup(struct pf_state *); 1666int pf_normalize_tcp_init(struct mbuf *, int, struct pf_pdesc *, 1667 struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *); 1668int pf_normalize_tcp_stateful(struct mbuf *, int, struct pf_pdesc *, 1669 u_short *, struct tcphdr *, struct pf_state *, 1670 struct pf_state_peer *, struct pf_state_peer *, int *); 1671u_int32_t 1672 pf_state_expires(const struct pf_state *); 1673void pf_purge_expired_fragments(void); 1674int pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kif *); 1675int pf_rtlabel_match(struct pf_addr *, sa_family_t, struct pf_addr_wrap *); 1676#ifdef __FreeBSD__ 1677int pf_socket_lookup(int, struct pf_pdesc *, struct inpcb *); 1678#else 1679int pf_socket_lookup(int, struct pf_pdesc *); 1680#endif 1681void pfr_initialize(void); 1682int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t); 1683void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t, 1684 u_int64_t, int, int, int); 1685int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, 1686 struct pf_addr **, struct pf_addr **, sa_family_t); 1687void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *); 1688struct pfr_ktable * 1689 pfr_attach_table(struct pf_ruleset *, char *); 1690void pfr_detach_table(struct pfr_ktable *); 1691int pfr_clr_tables(struct pfr_table *, int *, int); 1692int pfr_add_tables(struct pfr_table *, int, int *, int); 1693int pfr_del_tables(struct pfr_table *, int, int *, int); 1694int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int); 1695int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int); 1696int pfr_clr_tstats(struct pfr_table *, int, int *, int); 1697int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int); 1698int pfr_clr_addrs(struct pfr_table *, int *, int); 1699int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *, long); 1700int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1701 int); 1702int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1703 int); 1704int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1705 int *, int *, int *, int, u_int32_t); 1706int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int); 1707int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int); 1708int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *, 1709 int); 1710int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1711 int); 1712int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int); 1713int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int); 1714int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int); 1715int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *, 1716 int *, u_int32_t, int); 1717 1718extern struct pfi_statehead pfi_statehead; 1719extern struct pfi_kif *pfi_all; 1720 1721void pfi_initialize(void); 1722#ifdef __FreeBSD__ 1723void pfi_cleanup(void); 1724#endif 1725struct pfi_kif *pfi_kif_get(const char *); 1726void pfi_kif_ref(struct pfi_kif *, enum pfi_kif_refs); 1727void pfi_kif_unref(struct pfi_kif *, enum pfi_kif_refs); 1728int pfi_kif_match(struct pfi_kif *, struct pfi_kif *); 1729void pfi_attach_ifnet(struct ifnet *); 1730void pfi_detach_ifnet(struct ifnet *); 1731void pfi_attach_ifgroup(struct ifg_group *); 1732void pfi_detach_ifgroup(struct ifg_group *); 1733void pfi_group_change(const char *); 1734int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *, 1735 sa_family_t); 1736int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t); 1737void pfi_dynaddr_remove(struct pf_addr_wrap *); 1738void pfi_dynaddr_copyout(struct pf_addr_wrap *); 1739void pfi_fill_oldstatus(struct pf_status *); 1740int pfi_clr_istats(const char *); 1741int pfi_get_ifaces(const char *, struct pfi_kif *, int *); 1742int pfi_set_flags(const char *, int); 1743int pfi_clear_flags(const char *, int); 1744 1745u_int16_t pf_tagname2tag(char *); 1746void pf_tag2tagname(u_int16_t, char *); 1747void pf_tag_ref(u_int16_t); 1748void pf_tag_unref(u_int16_t); 1749int pf_tag_packet(struct mbuf *, struct pf_mtag *, int, int); 1750u_int32_t pf_qname2qid(char *); 1751void pf_qid2qname(u_int32_t, char *); 1752void pf_qid_unref(u_int32_t); 1753#ifndef __FreeBSD__ 1754struct pf_mtag *pf_find_mtag(struct mbuf *); 1755struct pf_mtag *pf_get_mtag(struct mbuf *); 1756#endif 1757 1758extern struct pf_status pf_status; 1759 1760#ifdef __FreeBSD__ 1761extern uma_zone_t pf_frent_pl, pf_frag_pl; 1762extern struct sx pf_consistency_lock; 1763#else 1764extern struct pool pf_frent_pl, pf_frag_pl; 1765extern struct rwlock pf_consistency_lock; 1766#endif 1767 1768struct pf_pool_limit { 1769 void *pp; 1770 unsigned limit; 1771}; 1772extern struct pf_pool_limit pf_pool_limits[PF_LIMIT_MAX]; 1773 1774#ifdef __FreeBSD__ 1775struct pf_frent { 1776 LIST_ENTRY(pf_frent) fr_next; 1777 struct ip *fr_ip; 1778 struct mbuf *fr_m; 1779}; 1780 1781struct pf_frcache { 1782 LIST_ENTRY(pf_frcache) fr_next; 1783 uint16_t fr_off; 1784 uint16_t fr_end; 1785}; 1786 1787struct pf_fragment { 1788 RB_ENTRY(pf_fragment) fr_entry; 1789 TAILQ_ENTRY(pf_fragment) frag_next; 1790 struct in_addr fr_src; 1791 struct in_addr fr_dst; 1792 u_int8_t fr_p; /* protocol of this fragment */ 1793 u_int8_t fr_flags; /* status flags */ 1794 u_int16_t fr_id; /* fragment id for reassemble */ 1795 u_int16_t fr_max; /* fragment data max */ 1796 u_int32_t fr_timeout; 1797#define fr_queue fr_u.fru_queue 1798#define fr_cache fr_u.fru_cache 1799 union { 1800 LIST_HEAD(pf_fragq, pf_frent) fru_queue; /* buffering */ 1801 LIST_HEAD(pf_cacheq, pf_frcache) fru_cache; /* non-buf */ 1802 } fr_u; 1803}; 1804#endif /* (__FreeBSD__) */ 1805 1806#endif /* _KERNEL */ 1807 1808extern struct pf_anchor_global pf_anchors; 1809extern struct pf_anchor pf_main_anchor; 1810#define pf_main_ruleset pf_main_anchor.ruleset 1811 1812/* these ruleset functions can be linked into userland programs (pfctl) */ 1813int pf_get_ruleset_number(u_int8_t); 1814void pf_init_ruleset(struct pf_ruleset *); 1815int pf_anchor_setup(struct pf_rule *, 1816 const struct pf_ruleset *, const char *); 1817int pf_anchor_copyout(const struct pf_ruleset *, 1818 const struct pf_rule *, struct pfioc_rule *); 1819void pf_anchor_remove(struct pf_rule *); 1820void pf_remove_if_empty_ruleset(struct pf_ruleset *); 1821struct pf_anchor *pf_find_anchor(const char *); 1822struct pf_ruleset *pf_find_ruleset(const char *); 1823struct pf_ruleset *pf_find_or_create_ruleset(const char *); 1824void pf_rs_initialize(void); 1825 1826#ifndef __FreeBSD__ 1827/* ?!? */ 1828#ifdef _KERNEL 1829int pf_anchor_copyout(const struct pf_ruleset *, 1830 const struct pf_rule *, struct pfioc_rule *); 1831void pf_anchor_remove(struct pf_rule *); 1832 1833#endif /* _KERNEL */ 1834#endif 1835 1836/* The fingerprint functions can be linked into userland programs (tcpdump) */ 1837int pf_osfp_add(struct pf_osfp_ioctl *); 1838#ifdef _KERNEL 1839struct pf_osfp_enlist * 1840 pf_osfp_fingerprint(struct pf_pdesc *, struct mbuf *, int, 1841 const struct tcphdr *); 1842#endif /* _KERNEL */ 1843struct pf_osfp_enlist * 1844 pf_osfp_fingerprint_hdr(const struct ip *, const struct ip6_hdr *, 1845 const struct tcphdr *); 1846void pf_osfp_flush(void); 1847int pf_osfp_get(struct pf_osfp_ioctl *); 1848#ifdef __FreeBSD__ 1849int pf_osfp_initialize(void); 1850void pf_osfp_cleanup(void); 1851#else 1852void pf_osfp_initialize(void); 1853#endif 1854int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t); 1855struct pf_os_fingerprint * 1856 pf_osfp_validate(void); 1857 1858 1859#endif /* _NET_PFVAR_H_ */ 1860