1/* $NetBSD: pfvar.h,v 1.23 2020/03/05 07:46:36 riastradh Exp $ */ 2/* $OpenBSD: pfvar.h,v 1.254 2007/07/13 09:17:48 markus Exp $ */ 3 4/* 5 * Copyright (c) 2001 Daniel Hartmeier 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * - Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * - Redistributions in binary form must reproduce the above 15 * copyright notice, this list of conditions and the following 16 * disclaimer in the documentation and/or other materials provided 17 * with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 22 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 23 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 25 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 26 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 27 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 29 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 * 32 */ 33 34#ifndef _NET_PFVAR_H_ 35#define _NET_PFVAR_H_ 36 37#ifdef _KERNEL_OPT 38#include "opt_inet.h" 39#endif 40 41#include <sys/param.h> 42#include <sys/types.h> 43#include <sys/queue.h> 44#include <sys/tree.h> 45#include <sys/rwlock.h> 46 47#include <net/radix.h> 48#ifndef __NetBSD__ 49#include <net/route.h> 50#include <netinet/ip_ipsp.h> 51#else 52/* files above include netinet/in.h so include it too for compatibility */ 53#include <netinet/in.h> 54#endif /* __NetBSD__ */ 55#include <netinet/tcp_fsm.h> 56 57#if defined(__NetBSD__) && defined(_KERNEL) 58#include <net/if_compat.h> 59#include <net/pf_mtag.h> 60#endif /* __NetBSD__ && _KERNEL */ 61 62struct ip; 63struct ip6_hdr; 64 65#define PF_TCPS_PROXY_SRC ((TCP_NSTATES)+0) 66#define PF_TCPS_PROXY_DST ((TCP_NSTATES)+1) 67 68#define PF_MD5_DIGEST_LENGTH 16 69#ifdef MD5_DIGEST_LENGTH 70#if PF_MD5_DIGEST_LENGTH != MD5_DIGEST_LENGTH 71#error 72#endif 73#endif 74 75enum { PF_INOUT, PF_IN, PF_OUT }; 76enum { PF_LAN_EXT, PF_EXT_GWY, PF_ID }; 77enum { PF_PASS, PF_DROP, PF_SCRUB, PF_NOSCRUB, PF_NAT, PF_NONAT, 78 PF_BINAT, PF_NOBINAT, PF_RDR, PF_NORDR, PF_SYNPROXY_DROP }; 79enum { PF_RULESET_SCRUB, PF_RULESET_FILTER, PF_RULESET_NAT, 80 PF_RULESET_BINAT, PF_RULESET_RDR, PF_RULESET_MAX }; 81enum { PF_OP_NONE, PF_OP_IRG, PF_OP_EQ, PF_OP_NE, PF_OP_LT, 82 PF_OP_LE, PF_OP_GT, PF_OP_GE, PF_OP_XRG, PF_OP_RRG }; 83enum { PF_DEBUG_NONE, PF_DEBUG_URGENT, PF_DEBUG_MISC, PF_DEBUG_NOISY }; 84enum { PF_CHANGE_NONE, PF_CHANGE_ADD_HEAD, PF_CHANGE_ADD_TAIL, 85 PF_CHANGE_ADD_BEFORE, PF_CHANGE_ADD_AFTER, 86 PF_CHANGE_REMOVE, PF_CHANGE_GET_TICKET }; 87enum { PF_GET_NONE, PF_GET_CLR_CNTR }; 88 89/* 90 * Note about PFTM_*: real indices into pf_rule.timeout[] come before 91 * PFTM_MAX, special cases afterwards. See pf_state_expires(). 92 */ 93enum { PFTM_TCP_FIRST_PACKET, PFTM_TCP_OPENING, PFTM_TCP_ESTABLISHED, 94 PFTM_TCP_CLOSING, PFTM_TCP_FIN_WAIT, PFTM_TCP_CLOSED, 95 PFTM_UDP_FIRST_PACKET, PFTM_UDP_SINGLE, PFTM_UDP_MULTIPLE, 96 PFTM_ICMP_FIRST_PACKET, PFTM_ICMP_ERROR_REPLY, 97 PFTM_OTHER_FIRST_PACKET, PFTM_OTHER_SINGLE, 98 PFTM_OTHER_MULTIPLE, PFTM_FRAG, PFTM_INTERVAL, 99 PFTM_ADAPTIVE_START, PFTM_ADAPTIVE_END, PFTM_SRC_NODE, 100 PFTM_TS_DIFF, PFTM_MAX, PFTM_PURGE, PFTM_UNLINKED, 101 PFTM_UNTIL_PACKET }; 102 103/* PFTM default values */ 104#define PFTM_TCP_FIRST_PACKET_VAL 120 /* First TCP packet */ 105#define PFTM_TCP_OPENING_VAL 30 /* No response yet */ 106#define PFTM_TCP_ESTABLISHED_VAL 24*60*60/* Established */ 107#define PFTM_TCP_CLOSING_VAL 15 * 60 /* Half closed */ 108#define PFTM_TCP_FIN_WAIT_VAL 45 /* Got both FINs */ 109#define PFTM_TCP_CLOSED_VAL 90 /* Got a RST */ 110#define PFTM_UDP_FIRST_PACKET_VAL 60 /* First UDP packet */ 111#define PFTM_UDP_SINGLE_VAL 30 /* Unidirectional */ 112#define PFTM_UDP_MULTIPLE_VAL 60 /* Bidirectional */ 113#define PFTM_ICMP_FIRST_PACKET_VAL 20 /* First ICMP packet */ 114#define PFTM_ICMP_ERROR_REPLY_VAL 10 /* Got error response */ 115#define PFTM_OTHER_FIRST_PACKET_VAL 60 /* First packet */ 116#define PFTM_OTHER_SINGLE_VAL 30 /* Unidirectional */ 117#define PFTM_OTHER_MULTIPLE_VAL 60 /* Bidirectional */ 118#define PFTM_FRAG_VAL 30 /* Fragment expire */ 119#define PFTM_INTERVAL_VAL 10 /* Expire interval */ 120#define PFTM_SRC_NODE_VAL 0 /* Source tracking */ 121#define PFTM_TS_DIFF_VAL 30 /* Allowed TS diff */ 122 123enum { PF_NOPFROUTE, PF_FASTROUTE, PF_ROUTETO, PF_DUPTO, PF_REPLYTO }; 124enum { PF_LIMIT_STATES, PF_LIMIT_SRC_NODES, PF_LIMIT_FRAGS, 125 PF_LIMIT_TABLES, PF_LIMIT_TABLE_ENTRIES, PF_LIMIT_MAX }; 126#define PF_POOL_IDMASK 0x0f 127enum { PF_POOL_NONE, PF_POOL_BITMASK, PF_POOL_RANDOM, 128 PF_POOL_SRCHASH, PF_POOL_ROUNDROBIN }; 129enum { PF_ADDR_ADDRMASK, PF_ADDR_NOROUTE, PF_ADDR_DYNIFTL, 130 PF_ADDR_TABLE, PF_ADDR_RTLABEL, PF_ADDR_URPFFAILED }; 131#define PF_POOL_TYPEMASK 0x0f 132#define PF_POOL_STICKYADDR 0x20 133#define PF_WSCALE_FLAG 0x80 134#define PF_WSCALE_MASK 0x0f 135 136#define PF_LOG 0x01 137#define PF_LOG_ALL 0x02 138#define PF_LOG_SOCKET_LOOKUP 0x04 139 140struct pf_addr { 141 union { 142 struct in_addr v4; 143 struct in6_addr v6; 144 u_int8_t addr8[16]; 145 u_int16_t addr16[8]; 146 u_int32_t addr32[4]; 147 } pfa; /* 128-bit address */ 148#define v4 pfa.v4 149#define v6 pfa.v6 150#define addr8 pfa.addr8 151#define addr16 pfa.addr16 152#define addr32 pfa.addr32 153}; 154 155#define PF_TABLE_NAME_SIZE 32 156 157#define PFI_AFLAG_NETWORK 0x01 158#define PFI_AFLAG_BROADCAST 0x02 159#define PFI_AFLAG_PEER 0x04 160#define PFI_AFLAG_MODEMASK 0x07 161#define PFI_AFLAG_NOALIAS 0x08 162 163#ifndef RTLABEL_LEN 164#define RTLABEL_LEN 32 165#endif 166 167struct pf_addr_wrap { 168 union { 169 struct { 170 struct pf_addr addr; 171 struct pf_addr mask; 172 } a; 173 char ifname[IFNAMSIZ]; 174 char tblname[PF_TABLE_NAME_SIZE]; 175 char rtlabelname[RTLABEL_LEN]; 176 u_int32_t rtlabel; 177 } v; 178 union { 179 struct pfi_dynaddr *dyn; 180 struct pfr_ktable *tbl; 181 int dyncnt; 182 int tblcnt; 183 } p; 184 u_int8_t type; /* PF_ADDR_* */ 185 u_int8_t iflags; /* PFI_AFLAG_* */ 186}; 187 188#ifdef _KERNEL 189 190struct pfi_dynaddr { 191 TAILQ_ENTRY(pfi_dynaddr) entry; 192 struct pf_addr pfid_addr4; 193 struct pf_addr pfid_mask4; 194 struct pf_addr pfid_addr6; 195 struct pf_addr pfid_mask6; 196 struct pfr_ktable *pfid_kt; 197 struct pfi_kif *pfid_kif; 198 void *pfid_hook_cookie; 199 int pfid_net; /* mask or 128 */ 200 int pfid_acnt4; /* address count IPv4 */ 201 int pfid_acnt6; /* address count IPv6 */ 202 sa_family_t pfid_af; /* rule af */ 203 u_int8_t pfid_iflags; /* PFI_AFLAG_* */ 204}; 205 206/* 207 * Address manipulation macros 208 */ 209 210#ifdef INET 211#ifndef INET6 212#define PF_INET_ONLY 213#endif /* ! INET6 */ 214#endif /* INET */ 215 216#ifdef INET6 217#ifndef INET 218#define PF_INET6_ONLY 219#endif /* ! INET */ 220#endif /* INET6 */ 221 222#ifdef INET 223#ifdef INET6 224#define PF_INET_INET6 225#endif /* INET6 */ 226#endif /* INET */ 227 228#else 229 230#define PF_INET_INET6 231 232#endif /* _KERNEL */ 233 234/* Both IPv4 and IPv6 */ 235#ifdef PF_INET_INET6 236 237#define PF_AEQ(a, b, c) \ 238 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \ 239 ((a)->addr32[3] == (b)->addr32[3] && \ 240 (a)->addr32[2] == (b)->addr32[2] && \ 241 (a)->addr32[1] == (b)->addr32[1] && \ 242 (a)->addr32[0] == (b)->addr32[0])) \ 243 244#define PF_ANEQ(a, b, c) \ 245 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \ 246 ((a)->addr32[3] != (b)->addr32[3] || \ 247 (a)->addr32[2] != (b)->addr32[2] || \ 248 (a)->addr32[1] != (b)->addr32[1] || \ 249 (a)->addr32[0] != (b)->addr32[0])) \ 250 251#define PF_AZERO(a, c) \ 252 ((c == AF_INET && !(a)->addr32[0]) || \ 253 (!(a)->addr32[0] && !(a)->addr32[1] && \ 254 !(a)->addr32[2] && !(a)->addr32[3] )) \ 255 256#define PF_MATCHA(n, a, m, b, f) \ 257 pf_match_addr(n, a, m, b, f) 258 259#define PF_ACPY(a, b, f) \ 260 pf_addrcpy(a, b, f) 261 262#define PF_AINC(a, f) \ 263 pf_addr_inc(a, f) 264 265#define PF_POOLMASK(a, b, c, d, f) \ 266 pf_poolmask(a, b, c, d, f) 267 268#else 269 270/* Just IPv6 */ 271 272#ifdef PF_INET6_ONLY 273 274#define PF_AEQ(a, b, c) \ 275 ((a)->addr32[3] == (b)->addr32[3] && \ 276 (a)->addr32[2] == (b)->addr32[2] && \ 277 (a)->addr32[1] == (b)->addr32[1] && \ 278 (a)->addr32[0] == (b)->addr32[0]) \ 279 280#define PF_ANEQ(a, b, c) \ 281 ((a)->addr32[3] != (b)->addr32[3] || \ 282 (a)->addr32[2] != (b)->addr32[2] || \ 283 (a)->addr32[1] != (b)->addr32[1] || \ 284 (a)->addr32[0] != (b)->addr32[0]) \ 285 286#define PF_AZERO(a, c) \ 287 (!(a)->addr32[0] && \ 288 !(a)->addr32[1] && \ 289 !(a)->addr32[2] && \ 290 !(a)->addr32[3] ) \ 291 292#define PF_MATCHA(n, a, m, b, f) \ 293 pf_match_addr(n, a, m, b, f) 294 295#define PF_ACPY(a, b, f) \ 296 pf_addrcpy(a, b, f) 297 298#define PF_AINC(a, f) \ 299 pf_addr_inc(a, f) 300 301#define PF_POOLMASK(a, b, c, d, f) \ 302 pf_poolmask(a, b, c, d, f) 303 304#else 305 306/* Just IPv4 */ 307#ifdef PF_INET_ONLY 308 309#define PF_AEQ(a, b, c) \ 310 ((a)->addr32[0] == (b)->addr32[0]) 311 312#define PF_ANEQ(a, b, c) \ 313 ((a)->addr32[0] != (b)->addr32[0]) 314 315#define PF_AZERO(a, c) \ 316 (!(a)->addr32[0]) 317 318#define PF_MATCHA(n, a, m, b, f) \ 319 pf_match_addr(n, a, m, b, f) 320 321#define PF_ACPY(a, b, f) \ 322 (a)->v4.s_addr = (b)->v4.s_addr 323 324#define PF_AINC(a, f) \ 325 do { \ 326 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \ 327 } while (0) 328 329#define PF_POOLMASK(a, b, c, d, f) \ 330 do { \ 331 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \ 332 (((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \ 333 } while (0) 334 335#endif /* PF_INET_ONLY */ 336#endif /* PF_INET6_ONLY */ 337#endif /* PF_INET_INET6 */ 338 339#define PF_MISMATCHAW(aw, x, af, neg, ifp) \ 340 ( \ 341 (((aw)->type == PF_ADDR_NOROUTE && \ 342 pf_routable((x), (af), NULL)) || \ 343 (((aw)->type == PF_ADDR_URPFFAILED && (ifp) != NULL && \ 344 pf_routable((x), (af), (ifp))) || \ 345 ((aw)->type == PF_ADDR_RTLABEL && \ 346 !pf_rtlabel_match((x), (af), (aw))) || \ 347 ((aw)->type == PF_ADDR_TABLE && \ 348 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \ 349 ((aw)->type == PF_ADDR_DYNIFTL && \ 350 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \ 351 ((aw)->type == PF_ADDR_ADDRMASK && \ 352 !PF_AZERO(&(aw)->v.a.mask, (af)) && \ 353 !PF_MATCHA(0, &(aw)->v.a.addr, \ 354 &(aw)->v.a.mask, (x), (af))))) != \ 355 (neg) \ 356 ) 357 358 359struct pf_rule_uid { 360 uid_t uid[2]; 361 u_int8_t op; 362}; 363 364struct pf_rule_gid { 365 uid_t gid[2]; 366 u_int8_t op; 367}; 368 369struct pf_rule_addr { 370 struct pf_addr_wrap addr; 371 u_int16_t port[2]; 372 u_int8_t neg; 373 u_int8_t port_op; 374}; 375 376struct pf_pooladdr { 377 struct pf_addr_wrap addr; 378 TAILQ_ENTRY(pf_pooladdr) entries; 379 char ifname[IFNAMSIZ]; 380 struct pfi_kif *kif; 381}; 382 383TAILQ_HEAD(pf_palist, pf_pooladdr); 384 385struct pf_poolhashkey { 386 union { 387 u_int8_t key8[16]; 388 u_int16_t key16[8]; 389 u_int32_t key32[4]; 390 } pfk; /* 128-bit hash key */ 391#define key8 pfk.key8 392#define key16 pfk.key16 393#define key32 pfk.key32 394}; 395 396struct pf_pool { 397 struct pf_palist list; 398 struct pf_pooladdr *cur; 399 struct pf_poolhashkey key; 400 struct pf_addr counter; 401 int tblidx; 402 u_int16_t proxy_port[2]; 403 u_int8_t port_op; 404 u_int8_t opts; 405}; 406 407 408/* A packed Operating System description for fingerprinting */ 409typedef u_int32_t pf_osfp_t; 410#define PF_OSFP_ANY ((pf_osfp_t)0) 411#define PF_OSFP_UNKNOWN ((pf_osfp_t)-1) 412#define PF_OSFP_NOMATCH ((pf_osfp_t)-2) 413 414struct pf_osfp_entry { 415 SLIST_ENTRY(pf_osfp_entry) fp_entry; 416 pf_osfp_t fp_os; 417 int fp_enflags; 418#define PF_OSFP_EXPANDED 0x001 /* expanded entry */ 419#define PF_OSFP_GENERIC 0x002 /* generic signature */ 420#define PF_OSFP_NODETAIL 0x004 /* no p0f details */ 421#define PF_OSFP_LEN 32 422 char fp_class_nm[PF_OSFP_LEN]; 423 char fp_version_nm[PF_OSFP_LEN]; 424 char fp_subtype_nm[PF_OSFP_LEN]; 425}; 426#define PF_OSFP_ENTRY_EQ(a, b) \ 427 ((a)->fp_os == (b)->fp_os && \ 428 memcmp((a)->fp_class_nm, (b)->fp_class_nm, PF_OSFP_LEN) == 0 && \ 429 memcmp((a)->fp_version_nm, (b)->fp_version_nm, PF_OSFP_LEN) == 0 && \ 430 memcmp((a)->fp_subtype_nm, (b)->fp_subtype_nm, PF_OSFP_LEN) == 0) 431 432/* handle pf_osfp_t packing */ 433#define _FP_RESERVED_BIT 1 /* For the special negative #defines */ 434#define _FP_UNUSED_BITS 1 435#define _FP_CLASS_BITS 10 /* OS Class (Windows, Linux) */ 436#define _FP_VERSION_BITS 10 /* OS version (95, 98, NT, 2.4.54, 3.2) */ 437#define _FP_SUBTYPE_BITS 10 /* patch level (NT SP4, SP3, ECN patch) */ 438#define PF_OSFP_UNPACK(osfp, class, version, subtype) do { \ 439 (class) = ((osfp) >> (_FP_VERSION_BITS+_FP_SUBTYPE_BITS)) & \ 440 ((1 << _FP_CLASS_BITS) - 1); \ 441 (version) = ((osfp) >> _FP_SUBTYPE_BITS) & \ 442 ((1 << _FP_VERSION_BITS) - 1);\ 443 (subtype) = (osfp) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 444} while(0) 445#define PF_OSFP_PACK(osfp, class, version, subtype) do { \ 446 (osfp) = ((class) & ((1 << _FP_CLASS_BITS) - 1)) << (_FP_VERSION_BITS \ 447 + _FP_SUBTYPE_BITS); \ 448 (osfp) |= ((version) & ((1 << _FP_VERSION_BITS) - 1)) << \ 449 _FP_SUBTYPE_BITS; \ 450 (osfp) |= (subtype) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 451} while(0) 452 453/* the fingerprint of an OSes TCP SYN packet */ 454typedef u_int64_t pf_tcpopts_t; 455struct pf_os_fingerprint { 456 SLIST_HEAD(pf_osfp_enlist, pf_osfp_entry) fp_oses; /* list of matches */ 457 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 458 u_int16_t fp_wsize; /* TCP window size */ 459 u_int16_t fp_psize; /* ip->ip_len */ 460 u_int16_t fp_mss; /* TCP MSS */ 461 u_int16_t fp_flags; 462#define PF_OSFP_WSIZE_MOD 0x0001 /* Window modulus */ 463#define PF_OSFP_WSIZE_DC 0x0002 /* Window don't care */ 464#define PF_OSFP_WSIZE_MSS 0x0004 /* Window multiple of MSS */ 465#define PF_OSFP_WSIZE_MTU 0x0008 /* Window multiple of MTU */ 466#define PF_OSFP_PSIZE_MOD 0x0010 /* packet size modulus */ 467#define PF_OSFP_PSIZE_DC 0x0020 /* packet size don't care */ 468#define PF_OSFP_WSCALE 0x0040 /* TCP window scaling */ 469#define PF_OSFP_WSCALE_MOD 0x0080 /* TCP window scale modulus */ 470#define PF_OSFP_WSCALE_DC 0x0100 /* TCP window scale dont-care */ 471#define PF_OSFP_MSS 0x0200 /* TCP MSS */ 472#define PF_OSFP_MSS_MOD 0x0400 /* TCP MSS modulus */ 473#define PF_OSFP_MSS_DC 0x0800 /* TCP MSS dont-care */ 474#define PF_OSFP_DF 0x1000 /* IPv4 don't fragment bit */ 475#define PF_OSFP_TS0 0x2000 /* Zero timestamp */ 476#define PF_OSFP_INET6 0x4000 /* IPv6 */ 477 u_int8_t fp_optcnt; /* TCP option count */ 478 u_int8_t fp_wscale; /* TCP window scaling */ 479 u_int8_t fp_ttl; /* IPv4 TTL */ 480#define PF_OSFP_MAXTTL_OFFSET 40 481/* TCP options packing */ 482#define PF_OSFP_TCPOPT_NOP 0x0 /* TCP NOP option */ 483#define PF_OSFP_TCPOPT_WSCALE 0x1 /* TCP window scaling option */ 484#define PF_OSFP_TCPOPT_MSS 0x2 /* TCP max segment size opt */ 485#define PF_OSFP_TCPOPT_SACK 0x3 /* TCP SACK OK option */ 486#define PF_OSFP_TCPOPT_TS 0x4 /* TCP timestamp option */ 487#define PF_OSFP_TCPOPT_BITS 3 /* bits used by each option */ 488#define PF_OSFP_MAX_OPTS \ 489 (sizeof(((struct pf_os_fingerprint *)0)->fp_tcpopts) * 8) \ 490 / PF_OSFP_TCPOPT_BITS 491 492 SLIST_ENTRY(pf_os_fingerprint) fp_next; 493}; 494 495struct pf_osfp_ioctl { 496 struct pf_osfp_entry fp_os; 497 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 498 u_int16_t fp_wsize; /* TCP window size */ 499 u_int16_t fp_psize; /* ip->ip_len */ 500 u_int16_t fp_mss; /* TCP MSS */ 501 u_int16_t fp_flags; 502 u_int8_t fp_optcnt; /* TCP option count */ 503 u_int8_t fp_wscale; /* TCP window scaling */ 504 u_int8_t fp_ttl; /* IPv4 TTL */ 505 506 int fp_getnum; /* DIOCOSFPGET number */ 507}; 508 509 510union pf_rule_ptr { 511 struct pf_rule *ptr; 512 u_int32_t nr; 513}; 514 515#define PF_ANCHOR_NAME_SIZE 64 516 517struct pf_rule { 518 struct pf_rule_addr src; 519 struct pf_rule_addr dst; 520#define PF_SKIP_IFP 0 521#define PF_SKIP_DIR 1 522#define PF_SKIP_AF 2 523#define PF_SKIP_PROTO 3 524#define PF_SKIP_SRC_ADDR 4 525#define PF_SKIP_SRC_PORT 5 526#define PF_SKIP_DST_ADDR 6 527#define PF_SKIP_DST_PORT 7 528#define PF_SKIP_COUNT 8 529 union pf_rule_ptr skip[PF_SKIP_COUNT]; 530#define PF_RULE_LABEL_SIZE 64 531 char label[PF_RULE_LABEL_SIZE]; 532#define PF_QNAME_SIZE 64 533 char ifname[IFNAMSIZ]; 534 char qname[PF_QNAME_SIZE]; 535 char pqname[PF_QNAME_SIZE]; 536#define PF_TAG_NAME_SIZE 64 537 char tagname[PF_TAG_NAME_SIZE]; 538 char match_tagname[PF_TAG_NAME_SIZE]; 539 540 char overload_tblname[PF_TABLE_NAME_SIZE]; 541 542 TAILQ_ENTRY(pf_rule) entries; 543 struct pf_pool rpool; 544 545 u_int64_t evaluations; 546 u_int64_t packets[2]; 547 u_int64_t bytes[2]; 548 549 struct pfi_kif *kif; 550 struct pf_anchor *anchor; 551 struct pfr_ktable *overload_tbl; 552 553 pf_osfp_t os_fingerprint; 554 555 int rtableid; 556 u_int32_t timeout[PFTM_MAX]; 557 u_int32_t states; 558 u_int32_t max_states; 559 u_int32_t src_nodes; 560 u_int32_t max_src_nodes; 561 u_int32_t max_src_states; 562 u_int32_t max_src_conn; 563 struct { 564 u_int32_t limit; 565 u_int32_t seconds; 566 } max_src_conn_rate; 567 u_int32_t qid; 568 u_int32_t pqid; 569 u_int32_t rt_listid; 570 u_int32_t nr; 571 u_int32_t prob; 572 uid_t cuid; 573 pid_t cpid; 574 575 u_int16_t return_icmp; 576 u_int16_t return_icmp6; 577 u_int16_t max_mss; 578 u_int16_t tag; 579 u_int16_t match_tag; 580 581 struct pf_rule_uid uid; 582 struct pf_rule_gid gid; 583 584 u_int32_t rule_flag; 585 u_int8_t action; 586 u_int8_t direction; 587 u_int8_t log; 588 u_int8_t logif; 589 u_int8_t quick; 590 u_int8_t ifnot; 591 u_int8_t match_tag_not; 592 u_int8_t natpass; 593 594#define PF_STATE_NORMAL 0x1 595#define PF_STATE_MODULATE 0x2 596#define PF_STATE_SYNPROXY 0x3 597 u_int8_t keep_state; 598 sa_family_t af; 599 u_int8_t proto; 600 u_int8_t type; 601 u_int8_t code; 602 u_int8_t flags; 603 u_int8_t flagset; 604 u_int8_t min_ttl; 605 u_int8_t allow_opts; 606 u_int8_t rt; 607 u_int8_t return_ttl; 608 u_int8_t tos; 609 u_int8_t anchor_relative; 610 u_int8_t anchor_wildcard; 611 612#define PF_FLUSH 0x01 613#define PF_FLUSH_GLOBAL 0x02 614 u_int8_t flush; 615}; 616 617/* rule flags */ 618#define PFRULE_DROP 0x0000 619#define PFRULE_RETURNRST 0x0001 620#define PFRULE_FRAGMENT 0x0002 621#define PFRULE_RETURNICMP 0x0004 622#define PFRULE_RETURN 0x0008 623#define PFRULE_NOSYNC 0x0010 624#define PFRULE_SRCTRACK 0x0020 /* track source states */ 625#define PFRULE_RULESRCTRACK 0x0040 /* per rule */ 626 627/* scrub flags */ 628#define PFRULE_NODF 0x0100 629#define PFRULE_FRAGCROP 0x0200 /* non-buffering frag cache */ 630#define PFRULE_FRAGDROP 0x0400 /* drop funny fragments */ 631#define PFRULE_RANDOMID 0x0800 632#define PFRULE_REASSEMBLE_TCP 0x1000 633 634/* rule flags again */ 635#define PFRULE_IFBOUND 0x00010000 /* if-bound */ 636 637#define PFSTATE_HIWAT 10000 /* default state table size */ 638#define PFSTATE_ADAPT_START 6000 /* default adaptive timeout start */ 639#define PFSTATE_ADAPT_END 12000 /* default adaptive timeout end */ 640 641 642struct pf_threshold { 643 u_int32_t limit; 644#define PF_THRESHOLD_MULT 1000 645#define PF_THRESHOLD_MAX 0xffffffff / PF_THRESHOLD_MULT 646 u_int32_t seconds; 647 u_int32_t count; 648 u_int32_t last; 649}; 650 651struct pf_src_node { 652 RB_ENTRY(pf_src_node) entry; 653 struct pf_addr addr; 654 struct pf_addr raddr; 655 union pf_rule_ptr rule; 656 struct pfi_kif *kif; 657 u_int64_t bytes[2]; 658 u_int64_t packets[2]; 659 u_int32_t states; 660 u_int32_t conn; 661 struct pf_threshold conn_rate; 662 u_int32_t creation; 663 u_int32_t expire; 664 sa_family_t af; 665 u_int8_t ruletype; 666}; 667 668#define PFSNODE_HIWAT 10000 /* default source node table size */ 669 670struct pf_state_scrub { 671 struct timeval pfss_last; /* time received last packet */ 672 u_int32_t pfss_tsecr; /* last echoed timestamp */ 673 u_int32_t pfss_tsval; /* largest timestamp */ 674 u_int32_t pfss_tsval0; /* original timestamp */ 675 u_int16_t pfss_flags; 676#define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */ 677#define PFSS_PAWS 0x0010 /* stricter PAWS checks */ 678#define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */ 679#define PFSS_DATA_TS 0x0040 /* timestamp on data packets */ 680#define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */ 681 u_int8_t pfss_ttl; /* stashed TTL */ 682 u_int8_t pad; 683 u_int32_t pfss_ts_mod; /* timestamp modulation */ 684}; 685 686struct pf_state_host { 687 struct pf_addr addr; 688 u_int16_t port; 689 u_int16_t pad; 690}; 691 692struct pf_state_peer { 693 u_int32_t seqlo; /* Max sequence number sent */ 694 u_int32_t seqhi; /* Max the other end ACKd + win */ 695 u_int32_t seqdiff; /* Sequence number modulator */ 696 u_int16_t max_win; /* largest window (pre scaling) */ 697 u_int8_t state; /* active state level */ 698 u_int8_t wscale; /* window scaling factor */ 699 u_int16_t mss; /* Maximum segment size option */ 700 u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */ 701 struct pf_state_scrub *scrub; /* state is scrubbed */ 702 u_int8_t pad[3]; 703}; 704 705TAILQ_HEAD(pf_state_queue, pf_state); 706 707/* keep synced with struct pf_state_key, used in RB_FIND */ 708struct pf_state_key_cmp { 709 struct pf_state_host lan; 710 struct pf_state_host gwy; 711 struct pf_state_host ext; 712 sa_family_t af; 713 u_int8_t proto; 714 u_int8_t direction; 715 u_int8_t pad; 716}; 717 718TAILQ_HEAD(pf_statelist, pf_state); 719 720struct pf_state_key { 721 struct pf_state_host lan; 722 struct pf_state_host gwy; 723 struct pf_state_host ext; 724 sa_family_t af; 725 u_int8_t proto; 726 u_int8_t direction; 727 u_int8_t pad; 728 729 RB_ENTRY(pf_state_key) entry_lan_ext; 730 RB_ENTRY(pf_state_key) entry_ext_gwy; 731 struct pf_statelist states; 732 u_short refcnt; /* same size as if_index */ 733}; 734 735 736/* keep synced with struct pf_state, used in RB_FIND */ 737struct pf_state_cmp { 738 u_int64_t id; 739 u_int32_t creatorid; 740 u_int32_t pad; 741}; 742 743struct pf_state { 744 u_int64_t id; 745 u_int32_t creatorid; 746 u_int32_t pad; 747 748 TAILQ_ENTRY(pf_state) entry_list; 749 TAILQ_ENTRY(pf_state) next; 750 RB_ENTRY(pf_state) entry_id; 751 struct pf_state_peer src; 752 struct pf_state_peer dst; 753 union pf_rule_ptr rule; 754 union pf_rule_ptr anchor; 755 union pf_rule_ptr nat_rule; 756 struct pf_addr rt_addr; 757 struct pf_state_key *state_key; 758 struct pfi_kif *kif; 759 struct pfi_kif *rt_kif; 760 struct pf_src_node *src_node; 761 struct pf_src_node *nat_src_node; 762 u_int64_t packets[2]; 763 u_int64_t bytes[2]; 764 u_int32_t creation; 765 u_int32_t expire; 766 u_int32_t pfsync_time; 767 u_int16_t tag; 768 u_int8_t log; 769 u_int8_t allow_opts; 770 u_int8_t timeout; 771 u_int8_t sync_flags; 772#define PFSTATE_NOSYNC 0x01 773#define PFSTATE_FROMSYNC 0x02 774#define PFSTATE_STALE 0x04 775}; 776 777/* 778 * Unified state structures for pulling states out of the kernel 779 * used by pfsync(4) and the pf(4) ioctl. 780 */ 781struct pfsync_state_scrub { 782 u_int16_t pfss_flags; 783 u_int8_t pfss_ttl; /* stashed TTL */ 784#define PFSYNC_SCRUB_FLAG_VALID 0x01 785 u_int8_t scrub_flag; 786 u_int32_t pfss_ts_mod; /* timestamp modulation */ 787} __packed; 788 789struct pfsync_state_host { 790 struct pf_addr addr; 791 u_int16_t port; 792 u_int16_t pad[3]; 793} __packed; 794 795struct pfsync_state_peer { 796 struct pfsync_state_scrub scrub; /* state is scrubbed */ 797 u_int32_t seqlo; /* Max sequence number sent */ 798 u_int32_t seqhi; /* Max the other end ACKd + win */ 799 u_int32_t seqdiff; /* Sequence number modulator */ 800 u_int16_t max_win; /* largest window (pre scaling) */ 801 u_int16_t mss; /* Maximum segment size option */ 802 u_int8_t state; /* active state level */ 803 u_int8_t wscale; /* window scaling factor */ 804 u_int8_t pad[6]; 805} __packed; 806 807struct pfsync_state { 808 u_int32_t id[2]; 809 char ifname[IFNAMSIZ]; 810 struct pfsync_state_host lan; 811 struct pfsync_state_host gwy; 812 struct pfsync_state_host ext; 813 struct pfsync_state_peer src; 814 struct pfsync_state_peer dst; 815 struct pf_addr rt_addr; 816 u_int32_t rule; 817 u_int32_t anchor; 818 u_int32_t nat_rule; 819 u_int32_t creation; 820 u_int32_t expire; 821 u_int32_t packets[2][2]; 822 u_int32_t bytes[2][2]; 823 u_int32_t creatorid; 824 sa_family_t af; 825 u_int8_t proto; 826 u_int8_t direction; 827 u_int8_t log; 828 u_int8_t allow_opts; 829 u_int8_t timeout; 830 u_int8_t sync_flags; 831 u_int8_t updates; 832} __packed; 833 834#define PFSYNC_FLAG_COMPRESS 0x01 835#define PFSYNC_FLAG_STALE 0x02 836#define PFSYNC_FLAG_SRCNODE 0x04 837#define PFSYNC_FLAG_NATSRCNODE 0x08 838 839/* for copies to/from userland via pf_ioctl() */ 840#define pf_state_peer_to_pfsync(s,d) do { \ 841 (d)->seqlo = (s)->seqlo; \ 842 (d)->seqhi = (s)->seqhi; \ 843 (d)->seqdiff = (s)->seqdiff; \ 844 (d)->max_win = (s)->max_win; \ 845 (d)->mss = (s)->mss; \ 846 (d)->state = (s)->state; \ 847 (d)->wscale = (s)->wscale; \ 848 if ((s)->scrub) { \ 849 (d)->scrub.pfss_flags = \ 850 (s)->scrub->pfss_flags & PFSS_TIMESTAMP; \ 851 (d)->scrub.pfss_ttl = (s)->scrub->pfss_ttl; \ 852 (d)->scrub.pfss_ts_mod = (s)->scrub->pfss_ts_mod; \ 853 (d)->scrub.scrub_flag = PFSYNC_SCRUB_FLAG_VALID; \ 854 } \ 855} while (0) 856 857#define pf_state_peer_from_pfsync(s,d) do { \ 858 (d)->seqlo = (s)->seqlo; \ 859 (d)->seqhi = (s)->seqhi; \ 860 (d)->seqdiff = (s)->seqdiff; \ 861 (d)->max_win = (s)->max_win; \ 862 (d)->mss = ntohs((s)->mss); \ 863 (d)->state = (s)->state; \ 864 (d)->wscale = (s)->wscale; \ 865 if ((s)->scrub.scrub_flag == PFSYNC_SCRUB_FLAG_VALID && \ 866 (d)->scrub != NULL) { \ 867 (d)->scrub->pfss_flags = \ 868 ntohs((s)->scrub.pfss_flags) & PFSS_TIMESTAMP; \ 869 (d)->scrub->pfss_ttl = (s)->scrub.pfss_ttl; \ 870 (d)->scrub->pfss_ts_mod = (s)->scrub.pfss_ts_mod; \ 871 } \ 872} while (0) 873 874#define pf_state_counter_to_pfsync(s,d) do { \ 875 d[0] = (s>>32)&0xffffffff; \ 876 d[1] = s&0xffffffff; \ 877} while (0) 878 879#define pf_state_counter_from_pfsync(s) \ 880 (((u_int64_t)(s[0])<<32) | (u_int64_t)(s[1])) 881 882 883 884TAILQ_HEAD(pf_rulequeue, pf_rule); 885 886struct pf_anchor; 887 888struct pf_ruleset { 889 struct { 890 struct pf_rulequeue queues[2]; 891 struct { 892 struct pf_rulequeue *ptr; 893 struct pf_rule **ptr_array; 894 u_int32_t rcount; 895 u_int32_t ticket; 896 int open; 897 } active, inactive; 898 } rules[PF_RULESET_MAX]; 899 struct pf_anchor *anchor; 900 u_int32_t tticket; 901 int tables; 902 int topen; 903}; 904 905RB_HEAD(pf_anchor_global, pf_anchor); 906RB_HEAD(pf_anchor_node, pf_anchor); 907struct pf_anchor { 908 RB_ENTRY(pf_anchor) entry_global; 909 RB_ENTRY(pf_anchor) entry_node; 910 struct pf_anchor *parent; 911 struct pf_anchor_node children; 912 char name[PF_ANCHOR_NAME_SIZE]; 913 char path[MAXPATHLEN]; 914 struct pf_ruleset ruleset; 915 int refcnt; /* anchor rules */ 916 int match; 917}; 918RB_PROTOTYPE(pf_anchor_global, pf_anchor, entry_global, pf_anchor_compare); 919RB_PROTOTYPE(pf_anchor_node, pf_anchor, entry_node, pf_anchor_compare); 920 921#define PF_RESERVED_ANCHOR "_pf" 922 923#define PFR_TFLAG_PERSIST 0x00000001 924#define PFR_TFLAG_CONST 0x00000002 925#define PFR_TFLAG_ACTIVE 0x00000004 926#define PFR_TFLAG_INACTIVE 0x00000008 927#define PFR_TFLAG_REFERENCED 0x00000010 928#define PFR_TFLAG_REFDANCHOR 0x00000020 929#define PFR_TFLAG_USRMASK 0x00000003 930#define PFR_TFLAG_SETMASK 0x0000003C 931#define PFR_TFLAG_ALLMASK 0x0000003F 932 933struct pfr_table { 934 char pfrt_anchor[MAXPATHLEN]; 935 char pfrt_name[PF_TABLE_NAME_SIZE]; 936 u_int32_t pfrt_flags; 937 u_int8_t pfrt_fback; 938}; 939 940enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED, 941 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE, 942 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_MAX }; 943 944struct pfr_addr { 945 union { 946 struct in_addr _pfra_ip4addr; 947 struct in6_addr _pfra_ip6addr; 948 } pfra_u; 949 u_int8_t pfra_af; 950 u_int8_t pfra_net; 951 u_int8_t pfra_not; 952 u_int8_t pfra_fback; 953}; 954#define pfra_ip4addr pfra_u._pfra_ip4addr 955#define pfra_ip6addr pfra_u._pfra_ip6addr 956 957enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX }; 958enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX }; 959#define PFR_OP_XPASS PFR_OP_ADDR_MAX 960 961struct pfr_astats { 962 struct pfr_addr pfras_a; 963 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 964 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 965 long pfras_tzero; 966}; 967 968enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX }; 969 970struct pfr_tstats { 971 struct pfr_table pfrts_t; 972 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 973 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 974 u_int64_t pfrts_match; 975 u_int64_t pfrts_nomatch; 976 long pfrts_tzero; 977 int pfrts_cnt; 978 int pfrts_refcnt[PFR_REFCNT_MAX]; 979}; 980#define pfrts_name pfrts_t.pfrt_name 981#define pfrts_flags pfrts_t.pfrt_flags 982 983#ifndef _SOCKADDR_UNION_DEFINED 984#define _SOCKADDR_UNION_DEFINED 985union sockaddr_union { 986 struct sockaddr sa; 987 struct sockaddr_in sin; 988 struct sockaddr_in6 sin6; 989}; 990#endif /* _SOCKADDR_UNION_DEFINED */ 991 992SLIST_HEAD(pfr_kentryworkq, pfr_kentry); 993struct pfr_kentry { 994 struct radix_node pfrke_node[2]; 995 union sockaddr_union pfrke_sa; 996 u_int64_t pfrke_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 997 u_int64_t pfrke_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 998 SLIST_ENTRY(pfr_kentry) pfrke_workq; 999 long pfrke_tzero; 1000 u_int8_t pfrke_af; 1001 u_int8_t pfrke_net; 1002 u_int8_t pfrke_not; 1003 u_int8_t pfrke_mark; 1004 u_int8_t pfrke_intrpool; 1005}; 1006 1007SLIST_HEAD(pfr_ktableworkq, pfr_ktable); 1008RB_HEAD(pfr_ktablehead, pfr_ktable); 1009struct pfr_ktable { 1010 struct pfr_tstats pfrkt_ts; 1011 RB_ENTRY(pfr_ktable) pfrkt_tree; 1012 SLIST_ENTRY(pfr_ktable) pfrkt_workq; 1013 struct radix_node_head *pfrkt_ip4; 1014 struct radix_node_head *pfrkt_ip6; 1015 struct pfr_ktable *pfrkt_shadow; 1016 struct pfr_ktable *pfrkt_root; 1017 struct pf_ruleset *pfrkt_rs; 1018 long pfrkt_larg; 1019 int pfrkt_nflags; 1020}; 1021#define pfrkt_t pfrkt_ts.pfrts_t 1022#define pfrkt_name pfrkt_t.pfrt_name 1023#define pfrkt_anchor pfrkt_t.pfrt_anchor 1024#define pfrkt_ruleset pfrkt_t.pfrt_ruleset 1025#define pfrkt_flags pfrkt_t.pfrt_flags 1026#define pfrkt_cnt pfrkt_ts.pfrts_cnt 1027#define pfrkt_refcnt pfrkt_ts.pfrts_refcnt 1028#define pfrkt_packets pfrkt_ts.pfrts_packets 1029#define pfrkt_bytes pfrkt_ts.pfrts_bytes 1030#define pfrkt_match pfrkt_ts.pfrts_match 1031#define pfrkt_nomatch pfrkt_ts.pfrts_nomatch 1032#define pfrkt_tzero pfrkt_ts.pfrts_tzero 1033 1034RB_HEAD(pf_state_tree_lan_ext, pf_state_key); 1035RB_PROTOTYPE(pf_state_tree_lan_ext, pf_state_key, 1036 entry_lan_ext, pf_state_compare_lan_ext); 1037 1038RB_HEAD(pf_state_tree_ext_gwy, pf_state_key); 1039RB_PROTOTYPE(pf_state_tree_ext_gwy, pf_state_key, 1040 entry_ext_gwy, pf_state_compare_ext_gwy); 1041 1042RB_HEAD(pfi_ifhead, pfi_kif); 1043 1044/* state tables */ 1045extern struct pf_state_tree_lan_ext pf_statetbl_lan_ext; 1046extern struct pf_state_tree_ext_gwy pf_statetbl_ext_gwy; 1047 1048/* keep synced with pfi_kif, used in RB_FIND */ 1049struct pfi_kif_cmp { 1050 char pfik_name[IFNAMSIZ]; 1051}; 1052 1053struct pfi_kif { 1054 char pfik_name[IFNAMSIZ]; 1055 RB_ENTRY(pfi_kif) pfik_tree; 1056 u_int64_t pfik_packets[2][2][2]; 1057 u_int64_t pfik_bytes[2][2][2]; 1058 u_int32_t pfik_tzero; 1059 int pfik_flags; 1060 void *pfik_ah_cookie; 1061 struct ifnet *pfik_ifp; 1062 struct ifg_group *pfik_group; 1063 int pfik_states; 1064 int pfik_rules; 1065 TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs; 1066}; 1067 1068enum pfi_kif_refs { 1069 PFI_KIF_REF_NONE, 1070 PFI_KIF_REF_STATE, 1071 PFI_KIF_REF_RULE 1072}; 1073 1074#define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */ 1075 1076struct pf_pdesc { 1077 struct { 1078 int done; 1079 uid_t uid; 1080 gid_t gid; 1081 pid_t pid; 1082 } lookup; 1083 u_int64_t tot_len; /* Make Mickey money */ 1084 union { 1085 struct tcphdr *tcp; 1086 struct udphdr *udp; 1087 struct icmp *icmp; 1088#ifdef INET6 1089 struct icmp6_hdr *icmp6; 1090#endif /* INET6 */ 1091 void *any; 1092 } hdr; 1093 struct pf_addr baddr; /* address before translation */ 1094 struct pf_addr naddr; /* address after translation */ 1095 struct pf_rule *nat_rule; /* nat/rdr rule applied to packet */ 1096 struct pf_addr *src; 1097 struct pf_addr *dst; 1098 struct ether_header 1099 *eh; 1100 u_int16_t *ip_sum; 1101 u_int32_t p_len; /* total length of payload */ 1102 u_int16_t flags; /* Let SCRUB trigger behavior in 1103 * state code. Easier than tags */ 1104#define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */ 1105#define PFDESC_IP_REAS 0x0002 /* IP frags would've been reassembled */ 1106 sa_family_t af; 1107 u_int8_t proto; 1108 u_int8_t tos; 1109}; 1110 1111/* flags for RDR options */ 1112#define PF_DPORT_RANGE 0x01 /* Dest port uses range */ 1113#define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */ 1114 1115/* Reasons code for passing/dropping a packet */ 1116#define PFRES_MATCH 0 /* Explicit match of a rule */ 1117#define PFRES_BADOFF 1 /* Bad offset for pull_hdr */ 1118#define PFRES_FRAG 2 /* Dropping following fragment */ 1119#define PFRES_SHORT 3 /* Dropping short packet */ 1120#define PFRES_NORM 4 /* Dropping by normalizer */ 1121#define PFRES_MEMORY 5 /* Dropped due to lacking mem */ 1122#define PFRES_TS 6 /* Bad TCP Timestamp (RFC1323) */ 1123#define PFRES_CONGEST 7 /* Congestion (of IP queue) */ 1124#define PFRES_IPOPTIONS 8 /* IP option */ 1125#define PFRES_PROTCKSUM 9 /* Protocol checksum invalid */ 1126#define PFRES_BADSTATE 10 /* State mismatch */ 1127#define PFRES_STATEINS 11 /* State insertion failure */ 1128#define PFRES_MAXSTATES 12 /* State limit */ 1129#define PFRES_SRCLIMIT 13 /* Source node/conn limit */ 1130#define PFRES_SYNPROXY 14 /* SYN proxy */ 1131#define PFRES_STATELOCKED 15 /* state table locked */ 1132#define PFRES_MAX 16 /* total+1 */ 1133 1134#define PFRES_NAMES { \ 1135 "match", \ 1136 "bad-offset", \ 1137 "fragment", \ 1138 "short", \ 1139 "normalize", \ 1140 "memory", \ 1141 "bad-timestamp", \ 1142 "congestion", \ 1143 "ip-option", \ 1144 "proto-cksum", \ 1145 "state-mismatch", \ 1146 "state-insert", \ 1147 "state-limit", \ 1148 "src-limit", \ 1149 "synproxy", \ 1150 "state-locked", \ 1151 NULL \ 1152} 1153 1154/* Counters for other things we want to keep track of */ 1155#define LCNT_STATES 0 /* states */ 1156#define LCNT_SRCSTATES 1 /* max-src-states */ 1157#define LCNT_SRCNODES 2 /* max-src-nodes */ 1158#define LCNT_SRCCONN 3 /* max-src-conn */ 1159#define LCNT_SRCCONNRATE 4 /* max-src-conn-rate */ 1160#define LCNT_OVERLOAD_TABLE 5 /* entry added to overload table */ 1161#define LCNT_OVERLOAD_FLUSH 6 /* state entries flushed */ 1162#define LCNT_MAX 7 /* total+1 */ 1163 1164#define LCNT_NAMES { \ 1165 "max states per rule", \ 1166 "max-src-states", \ 1167 "max-src-nodes", \ 1168 "max-src-conn", \ 1169 "max-src-conn-rate", \ 1170 "overload table insertion", \ 1171 "overload flush states", \ 1172 NULL \ 1173} 1174 1175/* UDP state enumeration */ 1176#define PFUDPS_NO_TRAFFIC 0 1177#define PFUDPS_SINGLE 1 1178#define PFUDPS_MULTIPLE 2 1179 1180#define PFUDPS_NSTATES 3 /* number of state levels */ 1181 1182#define PFUDPS_NAMES { \ 1183 "NO_TRAFFIC", \ 1184 "SINGLE", \ 1185 "MULTIPLE", \ 1186 NULL \ 1187} 1188 1189/* Other protocol state enumeration */ 1190#define PFOTHERS_NO_TRAFFIC 0 1191#define PFOTHERS_SINGLE 1 1192#define PFOTHERS_MULTIPLE 2 1193 1194#define PFOTHERS_NSTATES 3 /* number of state levels */ 1195 1196#define PFOTHERS_NAMES { \ 1197 "NO_TRAFFIC", \ 1198 "SINGLE", \ 1199 "MULTIPLE", \ 1200 NULL \ 1201} 1202 1203#define FCNT_STATE_SEARCH 0 1204#define FCNT_STATE_INSERT 1 1205#define FCNT_STATE_REMOVALS 2 1206#define FCNT_MAX 3 1207 1208#define SCNT_SRC_NODE_SEARCH 0 1209#define SCNT_SRC_NODE_INSERT 1 1210#define SCNT_SRC_NODE_REMOVALS 2 1211#define SCNT_MAX 3 1212 1213#define ACTION_SET(a, x) \ 1214 do { \ 1215 if ((a) != NULL) \ 1216 *(a) = (x); \ 1217 } while (0) 1218 1219#define REASON_SET(a, x) \ 1220 do { \ 1221 if ((a) != NULL) \ 1222 *(a) = (x); \ 1223 if (x < PFRES_MAX) \ 1224 pf_status.counters[x]++; \ 1225 } while (0) 1226#define REASON_SET_NOPTR(a, x) \ 1227 do { \ 1228 *(a) = (x); \ 1229 if (x < PFRES_MAX) \ 1230 pf_status.counters[x]++; \ 1231 } while (0) 1232 1233struct pf_status { 1234 u_int64_t counters[PFRES_MAX]; 1235 u_int64_t lcounters[LCNT_MAX]; /* limit counters */ 1236 u_int64_t fcounters[FCNT_MAX]; 1237 u_int64_t scounters[SCNT_MAX]; 1238 u_int64_t pcounters[2][2][3]; 1239 u_int64_t bcounters[2][2]; 1240 u_int64_t stateid; 1241 u_int32_t running; 1242 u_int32_t states; 1243 u_int32_t src_nodes; 1244 u_int32_t since; 1245 u_int32_t debug; 1246 u_int32_t hostid; 1247 char ifname[IFNAMSIZ]; 1248 u_int8_t pf_chksum[PF_MD5_DIGEST_LENGTH]; 1249}; 1250 1251struct cbq_opts { 1252 u_int minburst; 1253 u_int maxburst; 1254 u_int pktsize; 1255 u_int maxpktsize; 1256 u_int ns_per_byte; 1257 u_int maxidle; 1258 int minidle; 1259 u_int offtime; 1260 int flags; 1261}; 1262 1263struct priq_opts { 1264 int flags; 1265}; 1266 1267struct hfsc_opts { 1268 /* real-time service curve */ 1269 u_int rtsc_m1; /* slope of the 1st segment in bps */ 1270 u_int rtsc_d; /* the x-projection of m1 in msec */ 1271 u_int rtsc_m2; /* slope of the 2nd segment in bps */ 1272 /* link-sharing service curve */ 1273 u_int lssc_m1; 1274 u_int lssc_d; 1275 u_int lssc_m2; 1276 /* upper-limit service curve */ 1277 u_int ulsc_m1; 1278 u_int ulsc_d; 1279 u_int ulsc_m2; 1280 int flags; 1281}; 1282 1283struct pf_altq { 1284 char ifname[IFNAMSIZ]; 1285 1286 void *altq_disc; /* discipline-specific state */ 1287 TAILQ_ENTRY(pf_altq) entries; 1288 1289 /* scheduler spec */ 1290 u_int8_t scheduler; /* scheduler type */ 1291 u_int16_t tbrsize; /* tokenbucket regulator size */ 1292 u_int32_t ifbandwidth; /* interface bandwidth */ 1293 1294 /* queue spec */ 1295 char qname[PF_QNAME_SIZE]; /* queue name */ 1296 char parent[PF_QNAME_SIZE]; /* parent name */ 1297 u_int32_t parent_qid; /* parent queue id */ 1298 u_int32_t bandwidth; /* queue bandwidth */ 1299 u_int8_t priority; /* priority */ 1300 u_int16_t qlimit; /* queue size limit */ 1301 u_int16_t flags; /* misc flags */ 1302 union { 1303 struct cbq_opts cbq_opts; 1304 struct priq_opts priq_opts; 1305 struct hfsc_opts hfsc_opts; 1306 } pq_u; 1307 1308 u_int32_t qid; /* return value */ 1309}; 1310 1311struct pf_tag { 1312 u_int16_t tag; /* tag id */ 1313}; 1314 1315struct pf_tagname { 1316 TAILQ_ENTRY(pf_tagname) entries; 1317 char name[PF_TAG_NAME_SIZE]; 1318 u_int16_t tag; 1319 int ref; 1320}; 1321 1322#define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */ 1323#define PFFRAG_FRAG_HIWAT 1000 /* Number of fragmented packets */ 1324#define PFFRAG_FRCENT_HIWAT 50000 /* Number of fragment cache entries */ 1325#define PFFRAG_FRCACHE_HIWAT 10000 /* Number of fragment descriptors */ 1326 1327#define PFR_KTABLE_HIWAT 1000 /* Number of tables */ 1328#define PFR_KENTRY_HIWAT 200000 /* Number of table entries */ 1329#define PFR_KENTRY_HIWAT_SMALL 100000 /* Number of table entries (tiny hosts) */ 1330 1331/* 1332 * ioctl parameter structures 1333 */ 1334 1335struct pfioc_pooladdr { 1336 u_int32_t action; 1337 u_int32_t ticket; 1338 u_int32_t nr; 1339 u_int32_t r_num; 1340 u_int8_t r_action; 1341 u_int8_t r_last; 1342 u_int8_t af; 1343 char anchor[MAXPATHLEN]; 1344 struct pf_pooladdr addr; 1345}; 1346 1347struct pfioc_rule { 1348 u_int32_t action; 1349 u_int32_t ticket; 1350 u_int32_t pool_ticket; 1351 u_int32_t nr; 1352 char anchor[MAXPATHLEN]; 1353 char anchor_call[MAXPATHLEN]; 1354 struct pf_rule rule; 1355}; 1356 1357struct pfioc_natlook { 1358 struct pf_addr saddr; 1359 struct pf_addr daddr; 1360 struct pf_addr rsaddr; 1361 struct pf_addr rdaddr; 1362 u_int16_t sport; 1363 u_int16_t dport; 1364 u_int16_t rsport; 1365 u_int16_t rdport; 1366 sa_family_t af; 1367 u_int8_t proto; 1368 u_int8_t direction; 1369}; 1370 1371struct pfioc_state { 1372 u_int32_t nr; 1373 void *state; 1374}; 1375 1376struct pfioc_src_node_kill { 1377 /* XXX returns the number of src nodes killed in psnk_af */ 1378 sa_family_t psnk_af; 1379 struct pf_rule_addr psnk_src; 1380 struct pf_rule_addr psnk_dst; 1381}; 1382 1383struct pfioc_state_kill { 1384 /* XXX returns the number of states killed in psk_af */ 1385 sa_family_t psk_af; 1386 int psk_proto; 1387 struct pf_rule_addr psk_src; 1388 struct pf_rule_addr psk_dst; 1389 char psk_ifname[IFNAMSIZ]; 1390}; 1391 1392struct pfioc_states { 1393 int ps_len; 1394 union { 1395 void *psu_buf; 1396 struct pfsync_state *psu_states; 1397 } ps_u; 1398#define ps_buf ps_u.psu_buf 1399#define ps_states ps_u.psu_states 1400}; 1401 1402struct pfioc_src_nodes { 1403 int psn_len; 1404 union { 1405 void *psu_buf; 1406 struct pf_src_node *psu_src_nodes; 1407 } psn_u; 1408#define psn_buf psn_u.psu_buf 1409#define psn_src_nodes psn_u.psu_src_nodes 1410}; 1411 1412struct pfioc_if { 1413 char ifname[IFNAMSIZ]; 1414}; 1415 1416struct pfioc_tm { 1417 int timeout; 1418 int seconds; 1419}; 1420 1421struct pfioc_limit { 1422 int index; 1423 unsigned limit; 1424}; 1425 1426struct pfioc_altq { 1427 u_int32_t action; 1428 u_int32_t ticket; 1429 u_int32_t nr; 1430 struct pf_altq altq; 1431}; 1432 1433struct pfioc_qstats { 1434 u_int32_t ticket; 1435 u_int32_t nr; 1436 void *buf; 1437 int nbytes; 1438 u_int8_t scheduler; 1439}; 1440 1441struct pfioc_ruleset { 1442 u_int32_t nr; 1443 char path[MAXPATHLEN]; 1444 char name[PF_ANCHOR_NAME_SIZE]; 1445}; 1446 1447#define PF_RULESET_ALTQ (PF_RULESET_MAX) 1448#define PF_RULESET_TABLE (PF_RULESET_MAX+1) 1449struct pfioc_trans { 1450 int size; /* number of elements */ 1451 int esize; /* size of each element in bytes */ 1452 struct pfioc_trans_e { 1453 int rs_num; 1454 char anchor[MAXPATHLEN]; 1455 u_int32_t ticket; 1456 } *array; 1457}; 1458 1459#define PFR_FLAG_ATOMIC 0x00000001 1460#define PFR_FLAG_DUMMY 0x00000002 1461#define PFR_FLAG_FEEDBACK 0x00000004 1462#define PFR_FLAG_CLSTATS 0x00000008 1463#define PFR_FLAG_ADDRSTOO 0x00000010 1464#define PFR_FLAG_REPLACE 0x00000020 1465#define PFR_FLAG_ALLRSETS 0x00000040 1466#define PFR_FLAG_ALLMASK 0x0000007F 1467#ifdef _KERNEL 1468#define PFR_FLAG_USERIOCTL 0x10000000 1469#endif 1470 1471struct pfioc_table { 1472 struct pfr_table pfrio_table; 1473 void *pfrio_buffer; 1474 int pfrio_esize; 1475 int pfrio_size; 1476 int pfrio_size2; 1477 int pfrio_nadd; 1478 int pfrio_ndel; 1479 int pfrio_nchange; 1480 int pfrio_flags; 1481 u_int32_t pfrio_ticket; 1482}; 1483#define pfrio_exists pfrio_nadd 1484#define pfrio_nzero pfrio_nadd 1485#define pfrio_nmatch pfrio_nadd 1486#define pfrio_naddr pfrio_size2 1487#define pfrio_setflag pfrio_size2 1488#define pfrio_clrflag pfrio_nadd 1489 1490struct pfioc_iface { 1491 char pfiio_name[IFNAMSIZ]; 1492 void *pfiio_buffer; 1493 int pfiio_esize; 1494 int pfiio_size; 1495 int pfiio_nzero; 1496 int pfiio_flags; 1497}; 1498 1499 1500/* 1501 * ioctl operations 1502 */ 1503 1504#define DIOCSTART _IO ('D', 1) 1505#define DIOCSTOP _IO ('D', 2) 1506#define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule) 1507#define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule) 1508#define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule) 1509#define DIOCSETLCK _IOWR('D', 8, uint32_t) 1510/* XXX cut 9 - 17 */ 1511#define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill) 1512#define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state) 1513#define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if) 1514#define DIOCGETSTATUS _IOWR('D', 21, struct pf_status) 1515#define DIOCCLRSTATUS _IO ('D', 22) 1516#define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook) 1517#define DIOCSETDEBUG _IOWR('D', 24, u_int32_t) 1518#define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states) 1519#define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule) 1520/* XXX cut 26 - 28 */ 1521#define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm) 1522#define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm) 1523#define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state) 1524#define DIOCCLRRULECTRS _IO ('D', 38) 1525#define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit) 1526#define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit) 1527#define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill) 1528#define DIOCSTARTALTQ _IO ('D', 42) 1529#define DIOCSTOPALTQ _IO ('D', 43) 1530#define DIOCADDALTQ _IOWR('D', 45, struct pfioc_altq) 1531#define DIOCGETALTQS _IOWR('D', 47, struct pfioc_altq) 1532#define DIOCGETALTQ _IOWR('D', 48, struct pfioc_altq) 1533#define DIOCCHANGEALTQ _IOWR('D', 49, struct pfioc_altq) 1534#define DIOCGETQSTATS _IOWR('D', 50, struct pfioc_qstats) 1535#define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr) 1536#define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr) 1537#define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr) 1538#define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr) 1539#define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr) 1540#define DIOCADDSTATES _IOWR('D', 56, struct pfioc_states) 1541/* XXX cut 57 - 57 */ 1542#define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset) 1543#define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset) 1544#define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table) 1545#define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table) 1546#define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table) 1547#define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table) 1548#define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table) 1549#define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table) 1550#define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table) 1551#define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table) 1552#define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table) 1553#define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table) 1554#define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table) 1555#define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table) 1556#define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table) 1557#define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table) 1558#define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table) 1559#define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table) 1560#define DIOCOSFPFLUSH _IO('D', 78) 1561#define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl) 1562#define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl) 1563#define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans) 1564#define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans) 1565#define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans) 1566#define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes) 1567#define DIOCCLRSRCNODES _IO('D', 85) 1568#define DIOCSETHOSTID _IOWR('D', 86, u_int32_t) 1569#define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface) 1570#define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface) 1571#define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface) 1572#define DIOCKILLSRCNODES _IOWR('D', 91, struct pfioc_src_node_kill) 1573 1574#ifdef _KERNEL 1575RB_HEAD(pf_src_tree, pf_src_node); 1576RB_PROTOTYPE(pf_src_tree, pf_src_node, entry, pf_src_compare); 1577extern struct pf_src_tree tree_src_tracking; 1578 1579RB_HEAD(pf_state_tree_id, pf_state); 1580RB_PROTOTYPE(pf_state_tree_id, pf_state, 1581 entry_id, pf_state_compare_id); 1582extern struct pf_state_tree_id tree_id; 1583extern struct pf_state_queue state_list; 1584 1585TAILQ_HEAD(pf_poolqueue, pf_pool); 1586extern struct pf_poolqueue pf_pools[2]; 1587TAILQ_HEAD(pf_altqqueue, pf_altq); 1588extern struct pf_altqqueue pf_altqs[2]; 1589extern struct pf_palist pf_pabuf; 1590 1591extern u_int32_t ticket_altqs_active; 1592extern u_int32_t ticket_altqs_inactive; 1593extern int altqs_inactive_open; 1594extern u_int32_t ticket_pabuf; 1595extern struct pf_altqqueue *pf_altqs_active; 1596extern struct pf_altqqueue *pf_altqs_inactive; 1597extern struct pf_poolqueue *pf_pools_active; 1598extern struct pf_poolqueue *pf_pools_inactive; 1599extern int pf_tbladdr_setup(struct pf_ruleset *, 1600 struct pf_addr_wrap *); 1601extern void pf_tbladdr_remove(struct pf_addr_wrap *); 1602extern void pf_tbladdr_copyout(struct pf_addr_wrap *); 1603extern void pf_calc_skip_steps(struct pf_rulequeue *); 1604extern struct pool pf_src_tree_pl, pf_rule_pl; 1605extern struct pool pf_state_pl, pf_state_key_pl, pf_altq_pl, 1606 pf_pooladdr_pl; 1607extern struct pool pf_state_scrub_pl; 1608extern void pf_purge_thread(void *); 1609extern void pf_purge_expired_src_nodes(int); 1610extern void pf_purge_expired_states(u_int32_t); 1611extern void pf_unlink_state(struct pf_state *); 1612extern void pf_free_state(struct pf_state *); 1613extern int pf_insert_state(struct pfi_kif *, 1614 struct pf_state *); 1615extern int pf_insert_src_node(struct pf_src_node **, 1616 struct pf_rule *, struct pf_addr *, 1617 sa_family_t); 1618void pf_src_tree_remove_state(struct pf_state *); 1619extern struct pf_state *pf_find_state_byid(struct pf_state_cmp *); 1620extern struct pf_state *pf_find_state_all(struct pf_state_key_cmp *, 1621 u_int8_t, int *); 1622extern void pf_print_state(struct pf_state *); 1623extern void pf_print_flags(u_int8_t); 1624extern u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t, 1625 u_int8_t); 1626 1627extern struct ifnet *sync_ifp; 1628extern struct pf_rule pf_default_rule; 1629extern void pf_addrcpy(struct pf_addr *, 1630 const struct pf_addr *, u_int8_t); 1631void pf_rm_rule(struct pf_rulequeue *, 1632 struct pf_rule *); 1633 1634#ifdef INET 1635int pf_test(int, struct ifnet *, struct mbuf **, struct ether_header *); 1636#endif /* INET */ 1637 1638#ifdef INET6 1639int pf_test6(int, struct ifnet *, struct mbuf **, struct ether_header *); 1640void pf_poolmask(struct pf_addr *, struct pf_addr*, 1641 struct pf_addr *, const struct pf_addr *, u_int8_t); 1642void pf_addr_inc(struct pf_addr *, sa_family_t); 1643#endif /* INET6 */ 1644 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); 1659#ifdef _MODULE 1660void pf_normalize_destroy(void); 1661#endif /* _MODULE */ 1662int pf_normalize_ip(struct mbuf **, int, struct pfi_kif *, u_short *, 1663 struct pf_pdesc *); 1664int pf_normalize_ip6(struct mbuf **, int, struct pfi_kif *, u_short *, 1665 struct pf_pdesc *); 1666int pf_normalize_tcp(int, struct pfi_kif *, struct mbuf *, int, int, void *, 1667 struct pf_pdesc *); 1668void pf_normalize_tcp_cleanup(struct pf_state *); 1669int pf_normalize_tcp_init(struct mbuf *, int, struct pf_pdesc *, 1670 struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *); 1671int pf_normalize_tcp_stateful(struct mbuf *, int, struct pf_pdesc *, 1672 u_short *, struct tcphdr *, struct pf_state *, 1673 struct pf_state_peer *, struct pf_state_peer *, int *); 1674u_int32_t 1675 pf_state_expires(const struct pf_state *); 1676void pf_purge_expired_fragments(void); 1677int pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kif *); 1678int pf_rtlabel_match(struct pf_addr *, sa_family_t, struct pf_addr_wrap *); 1679int pf_socket_lookup(int, struct pf_pdesc *); 1680struct pf_state_key * 1681 pf_alloc_state_key(struct pf_state *); 1682void pfr_initialize(void); 1683#ifdef _MODULE 1684void pfr_destroy(void); 1685#endif /* _MODULE */ 1686int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t); 1687void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t, 1688 u_int64_t, int, int, int); 1689int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, 1690 struct pf_addr **, struct pf_addr **, sa_family_t); 1691void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *); 1692struct pfr_ktable * 1693 pfr_attach_table(struct pf_ruleset *, char *); 1694void pfr_detach_table(struct pfr_ktable *); 1695int pfr_clr_tables(struct pfr_table *, int *, int); 1696int pfr_add_tables(struct pfr_table *, int, int *, int); 1697int pfr_del_tables(struct pfr_table *, int, int *, int); 1698int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int); 1699int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int); 1700int pfr_clr_tstats(struct pfr_table *, int, int *, int); 1701int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int); 1702int pfr_clr_addrs(struct pfr_table *, int *, int); 1703int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *, long); 1704int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1705 int); 1706int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1707 int); 1708int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1709 int *, int *, int *, int, u_int32_t); 1710int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int); 1711int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int); 1712int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *, 1713 int); 1714int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1715 int); 1716int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int); 1717int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int); 1718int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int); 1719int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *, 1720 int *, u_int32_t, int); 1721 1722extern struct pfi_kif *pfi_all; 1723 1724void pfi_initialize(void); 1725#ifdef _MODULE 1726void pfi_destroy(void); 1727#endif /* _MODULE */ 1728struct pfi_kif *pfi_kif_get(const char *); 1729void pfi_kif_ref(struct pfi_kif *, enum pfi_kif_refs); 1730void pfi_kif_unref(struct pfi_kif *, enum pfi_kif_refs); 1731int pfi_kif_match(struct pfi_kif *, struct pfi_kif *); 1732void pfi_attach_ifnet(struct ifnet *); 1733void pfi_detach_ifnet(struct ifnet *); 1734void pfi_attach_ifgroup(struct ifg_group *); 1735void pfi_detach_ifgroup(struct ifg_group *); 1736void pfi_group_change(const char *); 1737int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *, 1738 sa_family_t); 1739int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t); 1740void pfi_dynaddr_remove(struct pf_addr_wrap *); 1741void pfi_dynaddr_copyout(struct pf_addr_wrap *); 1742void pfi_fill_oldstatus(struct pf_status *); 1743int pfi_clr_istats(const char *); 1744int pfi_get_ifaces(const char *, struct pfi_kif *, int *); 1745int pfi_set_flags(const char *, int); 1746int pfi_clear_flags(const char *, int); 1747 1748u_int16_t pf_tagname2tag(char *); 1749void pf_tag2tagname(u_int16_t, char *); 1750void pf_tag_ref(u_int16_t); 1751void pf_tag_unref(u_int16_t); 1752int pf_tag_packet(struct mbuf *, int, int); 1753u_int32_t pf_qname2qid(char *); 1754void pf_qid2qname(u_int32_t, char *); 1755void pf_qid_unref(u_int32_t); 1756 1757extern struct pf_status pf_status; 1758extern struct pool pf_frent_pl, pf_frag_pl; 1759#ifdef __NetBSD__ 1760extern krwlock_t pf_consistency_lock; 1761#else 1762extern struct rwlock pf_consistency_lock; 1763#endif /* !__NetBSD__ */ 1764 1765struct pf_pool_limit { 1766 void *pp; 1767 unsigned limit; 1768}; 1769extern struct pf_pool_limit pf_pool_limits[PF_LIMIT_MAX]; 1770 1771/* 1772 * misc compatibility definitions 1773 */ 1774#if !defined(PRIu32) 1775#define PRIu32 "u" /* XXX */ 1776#endif 1777 1778#if !defined(NO_PID) 1779#define NO_PID (PID_MAX + 1) 1780#endif 1781 1782#if defined(__NetBSD__) 1783/* rwlock compatibility definitions */ 1784#define rw_enter_write(a) rw_enter((a), (RW_WRITER)) 1785#define rw_exit_write(a) rw_exit((a)) 1786#define rw_enter_read(a) rw_enter((a), (RW_READER)) 1787#define rw_exit_read(a) rw_exit((a)) 1788#endif /* __NetBSD__ */ 1789 1790#endif /* _KERNEL */ 1791 1792extern struct pf_anchor_global pf_anchors; 1793extern struct pf_anchor pf_main_anchor; 1794#define pf_main_ruleset pf_main_anchor.ruleset 1795 1796/* these ruleset functions can be linked into userland programs (pfctl) */ 1797int pf_get_ruleset_number(u_int8_t); 1798void pf_init_ruleset(struct pf_ruleset *); 1799int pf_anchor_setup(struct pf_rule *, 1800 const struct pf_ruleset *, const char *); 1801int pf_anchor_copyout(const struct pf_ruleset *, 1802 const struct pf_rule *, struct pfioc_rule *); 1803void pf_anchor_remove(struct pf_rule *); 1804void pf_remove_if_empty_ruleset(struct pf_ruleset *); 1805struct pf_anchor *pf_find_anchor(const char *); 1806struct pf_ruleset *pf_find_ruleset(const char *); 1807struct pf_ruleset *pf_find_or_create_ruleset(const char *); 1808void pf_rs_initialize(void); 1809 1810#ifdef _KERNEL 1811int pf_anchor_copyout(const struct pf_ruleset *, 1812 const struct pf_rule *, struct pfioc_rule *); 1813void pf_anchor_remove(struct pf_rule *); 1814 1815#endif /* _KERNEL */ 1816 1817/* The fingerprint functions can be linked into userland programs (tcpdump) */ 1818int pf_osfp_add(struct pf_osfp_ioctl *); 1819#ifdef _KERNEL 1820struct pf_osfp_enlist * 1821 pf_osfp_fingerprint(struct pf_pdesc *, struct mbuf *, int, 1822 const struct tcphdr *); 1823#endif /* _KERNEL */ 1824struct pf_osfp_enlist * 1825 pf_osfp_fingerprint_hdr(const struct ip *, const struct ip6_hdr *, 1826 const struct tcphdr *); 1827void pf_osfp_flush(void); 1828int pf_osfp_get(struct pf_osfp_ioctl *); 1829void pf_osfp_initialize(void); 1830#ifdef _MODULE 1831void pf_osfp_destroy(void); 1832#endif /* _MODULE */ 1833int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t); 1834struct pf_os_fingerprint * 1835 pf_osfp_validate(void); 1836 1837 1838#endif /* _NET_PFVAR_H_ */ 1839