1 /* $NetBSD: pfvar.h,v 1.19 2010/05/07 17:41:57 degroote 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 #include <sys/param.h> 38 #include <sys/types.h> 39 #include <sys/queue.h> 40 #include <sys/tree.h> 41 #include <sys/rwlock.h> 42 43 #include <net/radix.h> 44 #ifndef __NetBSD__ 45 #include <net/route.h> 46 #include <netinet/ip_ipsp.h> 47 #else 48 /* files above include netinet/in.h so include it too for compatibility */ 49 #include <netinet/in.h> 50 #endif /* __NetBSD__ */ 51 #include <netinet/tcp_fsm.h> 52 53 #if defined(__NetBSD__) && defined(_KERNEL) 54 #include <net/if_compat.h> 55 #include <net/pf_mtag.h> 56 #endif /* __NetBSD__ && _KERNEL */ 57 58 #ifdef __NetBSD__ 59 union sockaddr_union { 60 struct sockaddr sa; 61 struct sockaddr_in sin; 62 struct sockaddr_in6 sin6; 63 }; 64 #endif /* __NetBSD__ */ 65 66 struct ip; 67 struct ip6_hdr; 68 69 #define PF_TCPS_PROXY_SRC ((TCP_NSTATES)+0) 70 #define PF_TCPS_PROXY_DST ((TCP_NSTATES)+1) 71 72 #define PF_MD5_DIGEST_LENGTH 16 73 #ifdef MD5_DIGEST_LENGTH 74 #if PF_MD5_DIGEST_LENGTH != MD5_DIGEST_LENGTH 75 #error 76 #endif 77 #endif 78 79 enum { PF_INOUT, PF_IN, PF_OUT }; 80 enum { PF_LAN_EXT, PF_EXT_GWY, PF_ID }; 81 enum { PF_PASS, PF_DROP, PF_SCRUB, PF_NOSCRUB, PF_NAT, PF_NONAT, 82 PF_BINAT, PF_NOBINAT, PF_RDR, PF_NORDR, PF_SYNPROXY_DROP }; 83 enum { PF_RULESET_SCRUB, PF_RULESET_FILTER, PF_RULESET_NAT, 84 PF_RULESET_BINAT, PF_RULESET_RDR, PF_RULESET_MAX }; 85 enum { PF_OP_NONE, PF_OP_IRG, PF_OP_EQ, PF_OP_NE, PF_OP_LT, 86 PF_OP_LE, PF_OP_GT, PF_OP_GE, PF_OP_XRG, PF_OP_RRG }; 87 enum { PF_DEBUG_NONE, PF_DEBUG_URGENT, PF_DEBUG_MISC, PF_DEBUG_NOISY }; 88 enum { PF_CHANGE_NONE, PF_CHANGE_ADD_HEAD, PF_CHANGE_ADD_TAIL, 89 PF_CHANGE_ADD_BEFORE, PF_CHANGE_ADD_AFTER, 90 PF_CHANGE_REMOVE, PF_CHANGE_GET_TICKET }; 91 enum { PF_GET_NONE, PF_GET_CLR_CNTR }; 92 93 /* 94 * Note about PFTM_*: real indices into pf_rule.timeout[] come before 95 * PFTM_MAX, special cases afterwards. See pf_state_expires(). 96 */ 97 enum { PFTM_TCP_FIRST_PACKET, PFTM_TCP_OPENING, PFTM_TCP_ESTABLISHED, 98 PFTM_TCP_CLOSING, PFTM_TCP_FIN_WAIT, PFTM_TCP_CLOSED, 99 PFTM_UDP_FIRST_PACKET, PFTM_UDP_SINGLE, PFTM_UDP_MULTIPLE, 100 PFTM_ICMP_FIRST_PACKET, PFTM_ICMP_ERROR_REPLY, 101 PFTM_OTHER_FIRST_PACKET, PFTM_OTHER_SINGLE, 102 PFTM_OTHER_MULTIPLE, PFTM_FRAG, PFTM_INTERVAL, 103 PFTM_ADAPTIVE_START, PFTM_ADAPTIVE_END, PFTM_SRC_NODE, 104 PFTM_TS_DIFF, PFTM_MAX, PFTM_PURGE, PFTM_UNLINKED, 105 PFTM_UNTIL_PACKET }; 106 107 /* PFTM default values */ 108 #define PFTM_TCP_FIRST_PACKET_VAL 120 /* First TCP packet */ 109 #define PFTM_TCP_OPENING_VAL 30 /* No response yet */ 110 #define PFTM_TCP_ESTABLISHED_VAL 24*60*60/* Established */ 111 #define PFTM_TCP_CLOSING_VAL 15 * 60 /* Half closed */ 112 #define PFTM_TCP_FIN_WAIT_VAL 45 /* Got both FINs */ 113 #define PFTM_TCP_CLOSED_VAL 90 /* Got a RST */ 114 #define PFTM_UDP_FIRST_PACKET_VAL 60 /* First UDP packet */ 115 #define PFTM_UDP_SINGLE_VAL 30 /* Unidirectional */ 116 #define PFTM_UDP_MULTIPLE_VAL 60 /* Bidirectional */ 117 #define PFTM_ICMP_FIRST_PACKET_VAL 20 /* First ICMP packet */ 118 #define PFTM_ICMP_ERROR_REPLY_VAL 10 /* Got error response */ 119 #define PFTM_OTHER_FIRST_PACKET_VAL 60 /* First packet */ 120 #define PFTM_OTHER_SINGLE_VAL 30 /* Unidirectional */ 121 #define PFTM_OTHER_MULTIPLE_VAL 60 /* Bidirectional */ 122 #define PFTM_FRAG_VAL 30 /* Fragment expire */ 123 #define PFTM_INTERVAL_VAL 10 /* Expire interval */ 124 #define PFTM_SRC_NODE_VAL 0 /* Source tracking */ 125 #define PFTM_TS_DIFF_VAL 30 /* Allowed TS diff */ 126 127 enum { PF_NOPFROUTE, PF_FASTROUTE, PF_ROUTETO, PF_DUPTO, PF_REPLYTO }; 128 enum { PF_LIMIT_STATES, PF_LIMIT_SRC_NODES, PF_LIMIT_FRAGS, 129 PF_LIMIT_TABLES, PF_LIMIT_TABLE_ENTRIES, PF_LIMIT_MAX }; 130 #define PF_POOL_IDMASK 0x0f 131 enum { PF_POOL_NONE, PF_POOL_BITMASK, PF_POOL_RANDOM, 132 PF_POOL_SRCHASH, PF_POOL_ROUNDROBIN }; 133 enum { PF_ADDR_ADDRMASK, PF_ADDR_NOROUTE, PF_ADDR_DYNIFTL, 134 PF_ADDR_TABLE, PF_ADDR_RTLABEL, PF_ADDR_URPFFAILED }; 135 #define PF_POOL_TYPEMASK 0x0f 136 #define PF_POOL_STICKYADDR 0x20 137 #define PF_WSCALE_FLAG 0x80 138 #define PF_WSCALE_MASK 0x0f 139 140 #define PF_LOG 0x01 141 #define PF_LOG_ALL 0x02 142 #define PF_LOG_SOCKET_LOOKUP 0x04 143 144 struct pf_addr { 145 union { 146 struct in_addr v4; 147 struct in6_addr v6; 148 u_int8_t addr8[16]; 149 u_int16_t addr16[8]; 150 u_int32_t addr32[4]; 151 } pfa; /* 128-bit address */ 152 #define v4 pfa.v4 153 #define v6 pfa.v6 154 #define addr8 pfa.addr8 155 #define addr16 pfa.addr16 156 #define addr32 pfa.addr32 157 }; 158 159 #define PF_TABLE_NAME_SIZE 32 160 161 #define PFI_AFLAG_NETWORK 0x01 162 #define PFI_AFLAG_BROADCAST 0x02 163 #define PFI_AFLAG_PEER 0x04 164 #define PFI_AFLAG_MODEMASK 0x07 165 #define PFI_AFLAG_NOALIAS 0x08 166 167 #ifndef RTLABEL_LEN 168 #define RTLABEL_LEN 32 169 #endif 170 171 struct pf_addr_wrap { 172 union { 173 struct { 174 struct pf_addr addr; 175 struct pf_addr mask; 176 } a; 177 char ifname[IFNAMSIZ]; 178 char tblname[PF_TABLE_NAME_SIZE]; 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 193 194 struct 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 INET 215 #ifndef INET6 216 #define PF_INET_ONLY 217 #endif /* ! INET6 */ 218 #endif /* INET */ 219 220 #ifdef INET6 221 #ifndef INET 222 #define PF_INET6_ONLY 223 #endif /* ! INET */ 224 #endif /* INET6 */ 225 226 #ifdef INET 227 #ifdef INET6 228 #define PF_INET_INET6 229 #endif /* INET6 */ 230 #endif /* INET */ 231 232 #else 233 234 #define PF_INET_INET6 235 236 #endif /* _KERNEL */ 237 238 /* Both IPv4 and IPv6 */ 239 #ifdef PF_INET_INET6 240 241 #define PF_AEQ(a, b, c) \ 242 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \ 243 ((a)->addr32[3] == (b)->addr32[3] && \ 244 (a)->addr32[2] == (b)->addr32[2] && \ 245 (a)->addr32[1] == (b)->addr32[1] && \ 246 (a)->addr32[0] == (b)->addr32[0])) \ 247 248 #define PF_ANEQ(a, b, c) \ 249 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \ 250 ((a)->addr32[3] != (b)->addr32[3] || \ 251 (a)->addr32[2] != (b)->addr32[2] || \ 252 (a)->addr32[1] != (b)->addr32[1] || \ 253 (a)->addr32[0] != (b)->addr32[0])) \ 254 255 #define PF_AZERO(a, c) \ 256 ((c == AF_INET && !(a)->addr32[0]) || \ 257 (!(a)->addr32[0] && !(a)->addr32[1] && \ 258 !(a)->addr32[2] && !(a)->addr32[3] )) \ 259 260 #define PF_MATCHA(n, a, m, b, f) \ 261 pf_match_addr(n, a, m, b, f) 262 263 #define PF_ACPY(a, b, f) \ 264 pf_addrcpy(a, b, f) 265 266 #define PF_AINC(a, f) \ 267 pf_addr_inc(a, f) 268 269 #define PF_POOLMASK(a, b, c, d, f) \ 270 pf_poolmask(a, b, c, d, f) 271 272 #else 273 274 /* Just IPv6 */ 275 276 #ifdef PF_INET6_ONLY 277 278 #define PF_AEQ(a, b, c) \ 279 ((a)->addr32[3] == (b)->addr32[3] && \ 280 (a)->addr32[2] == (b)->addr32[2] && \ 281 (a)->addr32[1] == (b)->addr32[1] && \ 282 (a)->addr32[0] == (b)->addr32[0]) \ 283 284 #define PF_ANEQ(a, b, c) \ 285 ((a)->addr32[3] != (b)->addr32[3] || \ 286 (a)->addr32[2] != (b)->addr32[2] || \ 287 (a)->addr32[1] != (b)->addr32[1] || \ 288 (a)->addr32[0] != (b)->addr32[0]) \ 289 290 #define PF_AZERO(a, c) \ 291 (!(a)->addr32[0] && \ 292 !(a)->addr32[1] && \ 293 !(a)->addr32[2] && \ 294 !(a)->addr32[3] ) \ 295 296 #define PF_MATCHA(n, a, m, b, f) \ 297 pf_match_addr(n, a, m, b, f) 298 299 #define PF_ACPY(a, b, f) \ 300 pf_addrcpy(a, b, f) 301 302 #define PF_AINC(a, f) \ 303 pf_addr_inc(a, f) 304 305 #define PF_POOLMASK(a, b, c, d, f) \ 306 pf_poolmask(a, b, c, d, f) 307 308 #else 309 310 /* Just IPv4 */ 311 #ifdef PF_INET_ONLY 312 313 #define PF_AEQ(a, b, c) \ 314 ((a)->addr32[0] == (b)->addr32[0]) 315 316 #define PF_ANEQ(a, b, c) \ 317 ((a)->addr32[0] != (b)->addr32[0]) 318 319 #define PF_AZERO(a, c) \ 320 (!(a)->addr32[0]) 321 322 #define PF_MATCHA(n, a, m, b, f) \ 323 pf_match_addr(n, a, m, b, f) 324 325 #define PF_ACPY(a, b, f) \ 326 (a)->v4.s_addr = (b)->v4.s_addr 327 328 #define PF_AINC(a, f) \ 329 do { \ 330 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \ 331 } while (0) 332 333 #define PF_POOLMASK(a, b, c, d, f) \ 334 do { \ 335 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \ 336 (((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \ 337 } while (0) 338 339 #endif /* PF_INET_ONLY */ 340 #endif /* PF_INET6_ONLY */ 341 #endif /* PF_INET_INET6 */ 342 343 #define PF_MISMATCHAW(aw, x, af, neg, ifp) \ 344 ( \ 345 (((aw)->type == PF_ADDR_NOROUTE && \ 346 pf_routable((x), (af), NULL)) || \ 347 (((aw)->type == PF_ADDR_URPFFAILED && (ifp) != NULL && \ 348 pf_routable((x), (af), (ifp))) || \ 349 ((aw)->type == PF_ADDR_RTLABEL && \ 350 !pf_rtlabel_match((x), (af), (aw))) || \ 351 ((aw)->type == PF_ADDR_TABLE && \ 352 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \ 353 ((aw)->type == PF_ADDR_DYNIFTL && \ 354 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \ 355 ((aw)->type == PF_ADDR_ADDRMASK && \ 356 !PF_AZERO(&(aw)->v.a.mask, (af)) && \ 357 !PF_MATCHA(0, &(aw)->v.a.addr, \ 358 &(aw)->v.a.mask, (x), (af))))) != \ 359 (neg) \ 360 ) 361 362 363 struct pf_rule_uid { 364 uid_t uid[2]; 365 u_int8_t op; 366 }; 367 368 struct pf_rule_gid { 369 uid_t gid[2]; 370 u_int8_t op; 371 }; 372 373 struct pf_rule_addr { 374 struct pf_addr_wrap addr; 375 u_int16_t port[2]; 376 u_int8_t neg; 377 u_int8_t port_op; 378 }; 379 380 struct pf_pooladdr { 381 struct pf_addr_wrap addr; 382 TAILQ_ENTRY(pf_pooladdr) entries; 383 char ifname[IFNAMSIZ]; 384 struct pfi_kif *kif; 385 }; 386 387 TAILQ_HEAD(pf_palist, pf_pooladdr); 388 389 struct pf_poolhashkey { 390 union { 391 u_int8_t key8[16]; 392 u_int16_t key16[8]; 393 u_int32_t key32[4]; 394 } pfk; /* 128-bit hash key */ 395 #define key8 pfk.key8 396 #define key16 pfk.key16 397 #define key32 pfk.key32 398 }; 399 400 struct pf_pool { 401 struct pf_palist list; 402 struct pf_pooladdr *cur; 403 struct pf_poolhashkey key; 404 struct pf_addr counter; 405 int tblidx; 406 u_int16_t proxy_port[2]; 407 u_int8_t port_op; 408 u_int8_t opts; 409 }; 410 411 412 /* A packed Operating System description for fingerprinting */ 413 typedef u_int32_t pf_osfp_t; 414 #define PF_OSFP_ANY ((pf_osfp_t)0) 415 #define PF_OSFP_UNKNOWN ((pf_osfp_t)-1) 416 #define PF_OSFP_NOMATCH ((pf_osfp_t)-2) 417 418 struct pf_osfp_entry { 419 SLIST_ENTRY(pf_osfp_entry) fp_entry; 420 pf_osfp_t fp_os; 421 int fp_enflags; 422 #define PF_OSFP_EXPANDED 0x001 /* expanded entry */ 423 #define PF_OSFP_GENERIC 0x002 /* generic signature */ 424 #define PF_OSFP_NODETAIL 0x004 /* no p0f details */ 425 #define PF_OSFP_LEN 32 426 char fp_class_nm[PF_OSFP_LEN]; 427 char fp_version_nm[PF_OSFP_LEN]; 428 char fp_subtype_nm[PF_OSFP_LEN]; 429 }; 430 #define PF_OSFP_ENTRY_EQ(a, b) \ 431 ((a)->fp_os == (b)->fp_os && \ 432 memcmp((a)->fp_class_nm, (b)->fp_class_nm, PF_OSFP_LEN) == 0 && \ 433 memcmp((a)->fp_version_nm, (b)->fp_version_nm, PF_OSFP_LEN) == 0 && \ 434 memcmp((a)->fp_subtype_nm, (b)->fp_subtype_nm, PF_OSFP_LEN) == 0) 435 436 /* handle pf_osfp_t packing */ 437 #define _FP_RESERVED_BIT 1 /* For the special negative #defines */ 438 #define _FP_UNUSED_BITS 1 439 #define _FP_CLASS_BITS 10 /* OS Class (Windows, Linux) */ 440 #define _FP_VERSION_BITS 10 /* OS version (95, 98, NT, 2.4.54, 3.2) */ 441 #define _FP_SUBTYPE_BITS 10 /* patch level (NT SP4, SP3, ECN patch) */ 442 #define PF_OSFP_UNPACK(osfp, class, version, subtype) do { \ 443 (class) = ((osfp) >> (_FP_VERSION_BITS+_FP_SUBTYPE_BITS)) & \ 444 ((1 << _FP_CLASS_BITS) - 1); \ 445 (version) = ((osfp) >> _FP_SUBTYPE_BITS) & \ 446 ((1 << _FP_VERSION_BITS) - 1);\ 447 (subtype) = (osfp) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 448 } while(0) 449 #define PF_OSFP_PACK(osfp, class, version, subtype) do { \ 450 (osfp) = ((class) & ((1 << _FP_CLASS_BITS) - 1)) << (_FP_VERSION_BITS \ 451 + _FP_SUBTYPE_BITS); \ 452 (osfp) |= ((version) & ((1 << _FP_VERSION_BITS) - 1)) << \ 453 _FP_SUBTYPE_BITS; \ 454 (osfp) |= (subtype) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 455 } while(0) 456 457 /* the fingerprint of an OSes TCP SYN packet */ 458 typedef u_int64_t pf_tcpopts_t; 459 struct pf_os_fingerprint { 460 SLIST_HEAD(pf_osfp_enlist, pf_osfp_entry) fp_oses; /* list of matches */ 461 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 462 u_int16_t fp_wsize; /* TCP window size */ 463 u_int16_t fp_psize; /* ip->ip_len */ 464 u_int16_t fp_mss; /* TCP MSS */ 465 u_int16_t fp_flags; 466 #define PF_OSFP_WSIZE_MOD 0x0001 /* Window modulus */ 467 #define PF_OSFP_WSIZE_DC 0x0002 /* Window don't care */ 468 #define PF_OSFP_WSIZE_MSS 0x0004 /* Window multiple of MSS */ 469 #define PF_OSFP_WSIZE_MTU 0x0008 /* Window multiple of MTU */ 470 #define PF_OSFP_PSIZE_MOD 0x0010 /* packet size modulus */ 471 #define PF_OSFP_PSIZE_DC 0x0020 /* packet size don't care */ 472 #define PF_OSFP_WSCALE 0x0040 /* TCP window scaling */ 473 #define PF_OSFP_WSCALE_MOD 0x0080 /* TCP window scale modulus */ 474 #define PF_OSFP_WSCALE_DC 0x0100 /* TCP window scale dont-care */ 475 #define PF_OSFP_MSS 0x0200 /* TCP MSS */ 476 #define PF_OSFP_MSS_MOD 0x0400 /* TCP MSS modulus */ 477 #define PF_OSFP_MSS_DC 0x0800 /* TCP MSS dont-care */ 478 #define PF_OSFP_DF 0x1000 /* IPv4 don't fragment bit */ 479 #define PF_OSFP_TS0 0x2000 /* Zero timestamp */ 480 #define PF_OSFP_INET6 0x4000 /* IPv6 */ 481 u_int8_t fp_optcnt; /* TCP option count */ 482 u_int8_t fp_wscale; /* TCP window scaling */ 483 u_int8_t fp_ttl; /* IPv4 TTL */ 484 #define PF_OSFP_MAXTTL_OFFSET 40 485 /* TCP options packing */ 486 #define PF_OSFP_TCPOPT_NOP 0x0 /* TCP NOP option */ 487 #define PF_OSFP_TCPOPT_WSCALE 0x1 /* TCP window scaling option */ 488 #define PF_OSFP_TCPOPT_MSS 0x2 /* TCP max segment size opt */ 489 #define PF_OSFP_TCPOPT_SACK 0x3 /* TCP SACK OK option */ 490 #define PF_OSFP_TCPOPT_TS 0x4 /* TCP timestamp option */ 491 #define PF_OSFP_TCPOPT_BITS 3 /* bits used by each option */ 492 #define PF_OSFP_MAX_OPTS \ 493 (sizeof(((struct pf_os_fingerprint *)0)->fp_tcpopts) * 8) \ 494 / PF_OSFP_TCPOPT_BITS 495 496 SLIST_ENTRY(pf_os_fingerprint) fp_next; 497 }; 498 499 struct pf_osfp_ioctl { 500 struct pf_osfp_entry fp_os; 501 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 502 u_int16_t fp_wsize; /* TCP window size */ 503 u_int16_t fp_psize; /* ip->ip_len */ 504 u_int16_t fp_mss; /* TCP MSS */ 505 u_int16_t fp_flags; 506 u_int8_t fp_optcnt; /* TCP option count */ 507 u_int8_t fp_wscale; /* TCP window scaling */ 508 u_int8_t fp_ttl; /* IPv4 TTL */ 509 510 int fp_getnum; /* DIOCOSFPGET number */ 511 }; 512 513 514 union pf_rule_ptr { 515 struct pf_rule *ptr; 516 u_int32_t nr; 517 }; 518 519 #define PF_ANCHOR_NAME_SIZE 64 520 521 struct pf_rule { 522 struct pf_rule_addr src; 523 struct pf_rule_addr dst; 524 #define PF_SKIP_IFP 0 525 #define PF_SKIP_DIR 1 526 #define PF_SKIP_AF 2 527 #define PF_SKIP_PROTO 3 528 #define PF_SKIP_SRC_ADDR 4 529 #define PF_SKIP_SRC_PORT 5 530 #define PF_SKIP_DST_ADDR 6 531 #define PF_SKIP_DST_PORT 7 532 #define PF_SKIP_COUNT 8 533 union pf_rule_ptr skip[PF_SKIP_COUNT]; 534 #define PF_RULE_LABEL_SIZE 64 535 char label[PF_RULE_LABEL_SIZE]; 536 #define PF_QNAME_SIZE 64 537 char ifname[IFNAMSIZ]; 538 char qname[PF_QNAME_SIZE]; 539 char pqname[PF_QNAME_SIZE]; 540 #define PF_TAG_NAME_SIZE 64 541 char tagname[PF_TAG_NAME_SIZE]; 542 char match_tagname[PF_TAG_NAME_SIZE]; 543 544 char overload_tblname[PF_TABLE_NAME_SIZE]; 545 546 TAILQ_ENTRY(pf_rule) entries; 547 struct pf_pool rpool; 548 549 u_int64_t evaluations; 550 u_int64_t packets[2]; 551 u_int64_t bytes[2]; 552 553 struct pfi_kif *kif; 554 struct pf_anchor *anchor; 555 struct pfr_ktable *overload_tbl; 556 557 pf_osfp_t os_fingerprint; 558 559 int rtableid; 560 u_int32_t timeout[PFTM_MAX]; 561 u_int32_t states; 562 u_int32_t max_states; 563 u_int32_t src_nodes; 564 u_int32_t max_src_nodes; 565 u_int32_t max_src_states; 566 u_int32_t max_src_conn; 567 struct { 568 u_int32_t limit; 569 u_int32_t seconds; 570 } max_src_conn_rate; 571 u_int32_t qid; 572 u_int32_t pqid; 573 u_int32_t rt_listid; 574 u_int32_t nr; 575 u_int32_t prob; 576 uid_t cuid; 577 pid_t cpid; 578 579 u_int16_t return_icmp; 580 u_int16_t return_icmp6; 581 u_int16_t max_mss; 582 u_int16_t tag; 583 u_int16_t match_tag; 584 585 struct pf_rule_uid uid; 586 struct pf_rule_gid gid; 587 588 u_int32_t rule_flag; 589 u_int8_t action; 590 u_int8_t direction; 591 u_int8_t log; 592 u_int8_t logif; 593 u_int8_t quick; 594 u_int8_t ifnot; 595 u_int8_t match_tag_not; 596 u_int8_t natpass; 597 598 #define PF_STATE_NORMAL 0x1 599 #define PF_STATE_MODULATE 0x2 600 #define PF_STATE_SYNPROXY 0x3 601 u_int8_t keep_state; 602 sa_family_t af; 603 u_int8_t proto; 604 u_int8_t type; 605 u_int8_t code; 606 u_int8_t flags; 607 u_int8_t flagset; 608 u_int8_t min_ttl; 609 u_int8_t allow_opts; 610 u_int8_t rt; 611 u_int8_t return_ttl; 612 u_int8_t tos; 613 u_int8_t anchor_relative; 614 u_int8_t anchor_wildcard; 615 616 #define PF_FLUSH 0x01 617 #define PF_FLUSH_GLOBAL 0x02 618 u_int8_t flush; 619 }; 620 621 /* rule flags */ 622 #define PFRULE_DROP 0x0000 623 #define PFRULE_RETURNRST 0x0001 624 #define PFRULE_FRAGMENT 0x0002 625 #define PFRULE_RETURNICMP 0x0004 626 #define PFRULE_RETURN 0x0008 627 #define PFRULE_NOSYNC 0x0010 628 #define PFRULE_SRCTRACK 0x0020 /* track source states */ 629 #define PFRULE_RULESRCTRACK 0x0040 /* per rule */ 630 631 /* scrub flags */ 632 #define PFRULE_NODF 0x0100 633 #define PFRULE_FRAGCROP 0x0200 /* non-buffering frag cache */ 634 #define PFRULE_FRAGDROP 0x0400 /* drop funny fragments */ 635 #define PFRULE_RANDOMID 0x0800 636 #define PFRULE_REASSEMBLE_TCP 0x1000 637 638 /* rule flags again */ 639 #define PFRULE_IFBOUND 0x00010000 /* if-bound */ 640 641 #define PFSTATE_HIWAT 10000 /* default state table size */ 642 #define PFSTATE_ADAPT_START 6000 /* default adaptive timeout start */ 643 #define PFSTATE_ADAPT_END 12000 /* default adaptive timeout end */ 644 645 646 struct pf_threshold { 647 u_int32_t limit; 648 #define PF_THRESHOLD_MULT 1000 649 #define PF_THRESHOLD_MAX 0xffffffff / PF_THRESHOLD_MULT 650 u_int32_t seconds; 651 u_int32_t count; 652 u_int32_t last; 653 }; 654 655 struct pf_src_node { 656 RB_ENTRY(pf_src_node) entry; 657 struct pf_addr addr; 658 struct pf_addr raddr; 659 union pf_rule_ptr rule; 660 struct pfi_kif *kif; 661 u_int64_t bytes[2]; 662 u_int64_t packets[2]; 663 u_int32_t states; 664 u_int32_t conn; 665 struct pf_threshold conn_rate; 666 u_int32_t creation; 667 u_int32_t expire; 668 sa_family_t af; 669 u_int8_t ruletype; 670 }; 671 672 #define PFSNODE_HIWAT 10000 /* default source node table size */ 673 674 struct pf_state_scrub { 675 struct timeval pfss_last; /* time received last packet */ 676 u_int32_t pfss_tsecr; /* last echoed timestamp */ 677 u_int32_t pfss_tsval; /* largest timestamp */ 678 u_int32_t pfss_tsval0; /* original timestamp */ 679 u_int16_t pfss_flags; 680 #define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */ 681 #define PFSS_PAWS 0x0010 /* stricter PAWS checks */ 682 #define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */ 683 #define PFSS_DATA_TS 0x0040 /* timestamp on data packets */ 684 #define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */ 685 u_int8_t pfss_ttl; /* stashed TTL */ 686 u_int8_t pad; 687 u_int32_t pfss_ts_mod; /* timestamp modulation */ 688 }; 689 690 struct pf_state_host { 691 struct pf_addr addr; 692 u_int16_t port; 693 u_int16_t pad; 694 }; 695 696 struct pf_state_peer { 697 u_int32_t seqlo; /* Max sequence number sent */ 698 u_int32_t seqhi; /* Max the other end ACKd + win */ 699 u_int32_t seqdiff; /* Sequence number modulator */ 700 u_int16_t max_win; /* largest window (pre scaling) */ 701 u_int8_t state; /* active state level */ 702 u_int8_t wscale; /* window scaling factor */ 703 u_int16_t mss; /* Maximum segment size option */ 704 u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */ 705 struct pf_state_scrub *scrub; /* state is scrubbed */ 706 u_int8_t pad[3]; 707 }; 708 709 TAILQ_HEAD(pf_state_queue, pf_state); 710 711 /* keep synced with struct pf_state_key, used in RB_FIND */ 712 struct pf_state_key_cmp { 713 struct pf_state_host lan; 714 struct pf_state_host gwy; 715 struct pf_state_host ext; 716 sa_family_t af; 717 u_int8_t proto; 718 u_int8_t direction; 719 u_int8_t pad; 720 }; 721 722 TAILQ_HEAD(pf_statelist, pf_state); 723 724 struct pf_state_key { 725 struct pf_state_host lan; 726 struct pf_state_host gwy; 727 struct pf_state_host ext; 728 sa_family_t af; 729 u_int8_t proto; 730 u_int8_t direction; 731 u_int8_t pad; 732 733 RB_ENTRY(pf_state_key) entry_lan_ext; 734 RB_ENTRY(pf_state_key) entry_ext_gwy; 735 struct pf_statelist states; 736 u_short refcnt; /* same size as if_index */ 737 }; 738 739 740 /* keep synced with struct pf_state, used in RB_FIND */ 741 struct pf_state_cmp { 742 u_int64_t id; 743 u_int32_t creatorid; 744 u_int32_t pad; 745 }; 746 747 struct pf_state { 748 u_int64_t id; 749 u_int32_t creatorid; 750 u_int32_t pad; 751 752 TAILQ_ENTRY(pf_state) entry_list; 753 TAILQ_ENTRY(pf_state) next; 754 RB_ENTRY(pf_state) entry_id; 755 struct pf_state_peer src; 756 struct pf_state_peer dst; 757 union pf_rule_ptr rule; 758 union pf_rule_ptr anchor; 759 union pf_rule_ptr nat_rule; 760 struct pf_addr rt_addr; 761 struct pf_state_key *state_key; 762 struct pfi_kif *kif; 763 struct pfi_kif *rt_kif; 764 struct pf_src_node *src_node; 765 struct pf_src_node *nat_src_node; 766 u_int64_t packets[2]; 767 u_int64_t bytes[2]; 768 u_int32_t creation; 769 u_int32_t expire; 770 u_int32_t pfsync_time; 771 u_int16_t tag; 772 u_int8_t log; 773 u_int8_t allow_opts; 774 u_int8_t timeout; 775 u_int8_t sync_flags; 776 #define PFSTATE_NOSYNC 0x01 777 #define PFSTATE_FROMSYNC 0x02 778 #define PFSTATE_STALE 0x04 779 }; 780 781 /* 782 * Unified state structures for pulling states out of the kernel 783 * used by pfsync(4) and the pf(4) ioctl. 784 */ 785 struct pfsync_state_scrub { 786 u_int16_t pfss_flags; 787 u_int8_t pfss_ttl; /* stashed TTL */ 788 #define PFSYNC_SCRUB_FLAG_VALID 0x01 789 u_int8_t scrub_flag; 790 u_int32_t pfss_ts_mod; /* timestamp modulation */ 791 } __packed; 792 793 struct pfsync_state_host { 794 struct pf_addr addr; 795 u_int16_t port; 796 u_int16_t pad[3]; 797 } __packed; 798 799 struct pfsync_state_peer { 800 struct pfsync_state_scrub scrub; /* state is scrubbed */ 801 u_int32_t seqlo; /* Max sequence number sent */ 802 u_int32_t seqhi; /* Max the other end ACKd + win */ 803 u_int32_t seqdiff; /* Sequence number modulator */ 804 u_int16_t max_win; /* largest window (pre scaling) */ 805 u_int16_t mss; /* Maximum segment size option */ 806 u_int8_t state; /* active state level */ 807 u_int8_t wscale; /* window scaling factor */ 808 u_int8_t pad[6]; 809 } __packed; 810 811 struct pfsync_state { 812 u_int32_t id[2]; 813 char ifname[IFNAMSIZ]; 814 struct pfsync_state_host lan; 815 struct pfsync_state_host gwy; 816 struct pfsync_state_host ext; 817 struct pfsync_state_peer src; 818 struct pfsync_state_peer dst; 819 struct pf_addr rt_addr; 820 u_int32_t rule; 821 u_int32_t anchor; 822 u_int32_t nat_rule; 823 u_int32_t creation; 824 u_int32_t expire; 825 u_int32_t packets[2][2]; 826 u_int32_t bytes[2][2]; 827 u_int32_t creatorid; 828 sa_family_t af; 829 u_int8_t proto; 830 u_int8_t direction; 831 u_int8_t log; 832 u_int8_t allow_opts; 833 u_int8_t timeout; 834 u_int8_t sync_flags; 835 u_int8_t updates; 836 } __packed; 837 838 #define PFSYNC_FLAG_COMPRESS 0x01 839 #define PFSYNC_FLAG_STALE 0x02 840 #define PFSYNC_FLAG_SRCNODE 0x04 841 #define PFSYNC_FLAG_NATSRCNODE 0x08 842 843 /* for copies to/from userland via pf_ioctl() */ 844 #define pf_state_peer_to_pfsync(s,d) do { \ 845 (d)->seqlo = (s)->seqlo; \ 846 (d)->seqhi = (s)->seqhi; \ 847 (d)->seqdiff = (s)->seqdiff; \ 848 (d)->max_win = (s)->max_win; \ 849 (d)->mss = (s)->mss; \ 850 (d)->state = (s)->state; \ 851 (d)->wscale = (s)->wscale; \ 852 if ((s)->scrub) { \ 853 (d)->scrub.pfss_flags = \ 854 (s)->scrub->pfss_flags & PFSS_TIMESTAMP; \ 855 (d)->scrub.pfss_ttl = (s)->scrub->pfss_ttl; \ 856 (d)->scrub.pfss_ts_mod = (s)->scrub->pfss_ts_mod; \ 857 (d)->scrub.scrub_flag = PFSYNC_SCRUB_FLAG_VALID; \ 858 } \ 859 } while (0) 860 861 #define pf_state_peer_from_pfsync(s,d) do { \ 862 (d)->seqlo = (s)->seqlo; \ 863 (d)->seqhi = (s)->seqhi; \ 864 (d)->seqdiff = (s)->seqdiff; \ 865 (d)->max_win = (s)->max_win; \ 866 (d)->mss = ntohs((s)->mss); \ 867 (d)->state = (s)->state; \ 868 (d)->wscale = (s)->wscale; \ 869 if ((s)->scrub.scrub_flag == PFSYNC_SCRUB_FLAG_VALID && \ 870 (d)->scrub != NULL) { \ 871 (d)->scrub->pfss_flags = \ 872 ntohs((s)->scrub.pfss_flags) & PFSS_TIMESTAMP; \ 873 (d)->scrub->pfss_ttl = (s)->scrub.pfss_ttl; \ 874 (d)->scrub->pfss_ts_mod = (s)->scrub.pfss_ts_mod; \ 875 } \ 876 } while (0) 877 878 #define pf_state_counter_to_pfsync(s,d) do { \ 879 d[0] = (s>>32)&0xffffffff; \ 880 d[1] = s&0xffffffff; \ 881 } while (0) 882 883 #define pf_state_counter_from_pfsync(s) \ 884 (((u_int64_t)(s[0])<<32) | (u_int64_t)(s[1])) 885 886 887 888 TAILQ_HEAD(pf_rulequeue, pf_rule); 889 890 struct pf_anchor; 891 892 struct pf_ruleset { 893 struct { 894 struct pf_rulequeue queues[2]; 895 struct { 896 struct pf_rulequeue *ptr; 897 struct pf_rule **ptr_array; 898 u_int32_t rcount; 899 u_int32_t ticket; 900 int open; 901 } active, inactive; 902 } rules[PF_RULESET_MAX]; 903 struct pf_anchor *anchor; 904 u_int32_t tticket; 905 int tables; 906 int topen; 907 }; 908 909 RB_HEAD(pf_anchor_global, pf_anchor); 910 RB_HEAD(pf_anchor_node, pf_anchor); 911 struct pf_anchor { 912 RB_ENTRY(pf_anchor) entry_global; 913 RB_ENTRY(pf_anchor) entry_node; 914 struct pf_anchor *parent; 915 struct pf_anchor_node children; 916 char name[PF_ANCHOR_NAME_SIZE]; 917 char path[MAXPATHLEN]; 918 struct pf_ruleset ruleset; 919 int refcnt; /* anchor rules */ 920 int match; 921 }; 922 RB_PROTOTYPE(pf_anchor_global, pf_anchor, entry_global, pf_anchor_compare); 923 RB_PROTOTYPE(pf_anchor_node, pf_anchor, entry_node, pf_anchor_compare); 924 925 #define PF_RESERVED_ANCHOR "_pf" 926 927 #define PFR_TFLAG_PERSIST 0x00000001 928 #define PFR_TFLAG_CONST 0x00000002 929 #define PFR_TFLAG_ACTIVE 0x00000004 930 #define PFR_TFLAG_INACTIVE 0x00000008 931 #define PFR_TFLAG_REFERENCED 0x00000010 932 #define PFR_TFLAG_REFDANCHOR 0x00000020 933 #define PFR_TFLAG_USRMASK 0x00000003 934 #define PFR_TFLAG_SETMASK 0x0000003C 935 #define PFR_TFLAG_ALLMASK 0x0000003F 936 937 struct pfr_table { 938 char pfrt_anchor[MAXPATHLEN]; 939 char pfrt_name[PF_TABLE_NAME_SIZE]; 940 u_int32_t pfrt_flags; 941 u_int8_t pfrt_fback; 942 }; 943 944 enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED, 945 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE, 946 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_MAX }; 947 948 struct pfr_addr { 949 union { 950 struct in_addr _pfra_ip4addr; 951 struct in6_addr _pfra_ip6addr; 952 } pfra_u; 953 u_int8_t pfra_af; 954 u_int8_t pfra_net; 955 u_int8_t pfra_not; 956 u_int8_t pfra_fback; 957 }; 958 #define pfra_ip4addr pfra_u._pfra_ip4addr 959 #define pfra_ip6addr pfra_u._pfra_ip6addr 960 961 enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX }; 962 enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX }; 963 #define PFR_OP_XPASS PFR_OP_ADDR_MAX 964 965 struct pfr_astats { 966 struct pfr_addr pfras_a; 967 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 968 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 969 long pfras_tzero; 970 }; 971 972 enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX }; 973 974 struct pfr_tstats { 975 struct pfr_table pfrts_t; 976 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 977 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 978 u_int64_t pfrts_match; 979 u_int64_t pfrts_nomatch; 980 long pfrts_tzero; 981 int pfrts_cnt; 982 int pfrts_refcnt[PFR_REFCNT_MAX]; 983 }; 984 #define pfrts_name pfrts_t.pfrt_name 985 #define pfrts_flags pfrts_t.pfrt_flags 986 987 SLIST_HEAD(pfr_kentryworkq, pfr_kentry); 988 struct pfr_kentry { 989 struct radix_node pfrke_node[2]; 990 union sockaddr_union pfrke_sa; 991 u_int64_t pfrke_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 992 u_int64_t pfrke_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 993 SLIST_ENTRY(pfr_kentry) pfrke_workq; 994 long pfrke_tzero; 995 u_int8_t pfrke_af; 996 u_int8_t pfrke_net; 997 u_int8_t pfrke_not; 998 u_int8_t pfrke_mark; 999 u_int8_t pfrke_intrpool; 1000 }; 1001 1002 SLIST_HEAD(pfr_ktableworkq, pfr_ktable); 1003 RB_HEAD(pfr_ktablehead, pfr_ktable); 1004 struct pfr_ktable { 1005 struct pfr_tstats pfrkt_ts; 1006 RB_ENTRY(pfr_ktable) pfrkt_tree; 1007 SLIST_ENTRY(pfr_ktable) pfrkt_workq; 1008 struct radix_node_head *pfrkt_ip4; 1009 struct radix_node_head *pfrkt_ip6; 1010 struct pfr_ktable *pfrkt_shadow; 1011 struct pfr_ktable *pfrkt_root; 1012 struct pf_ruleset *pfrkt_rs; 1013 long pfrkt_larg; 1014 int pfrkt_nflags; 1015 }; 1016 #define pfrkt_t pfrkt_ts.pfrts_t 1017 #define pfrkt_name pfrkt_t.pfrt_name 1018 #define pfrkt_anchor pfrkt_t.pfrt_anchor 1019 #define pfrkt_ruleset pfrkt_t.pfrt_ruleset 1020 #define pfrkt_flags pfrkt_t.pfrt_flags 1021 #define pfrkt_cnt pfrkt_ts.pfrts_cnt 1022 #define pfrkt_refcnt pfrkt_ts.pfrts_refcnt 1023 #define pfrkt_packets pfrkt_ts.pfrts_packets 1024 #define pfrkt_bytes pfrkt_ts.pfrts_bytes 1025 #define pfrkt_match pfrkt_ts.pfrts_match 1026 #define pfrkt_nomatch pfrkt_ts.pfrts_nomatch 1027 #define pfrkt_tzero pfrkt_ts.pfrts_tzero 1028 1029 RB_HEAD(pf_state_tree_lan_ext, pf_state_key); 1030 RB_PROTOTYPE(pf_state_tree_lan_ext, pf_state_key, 1031 entry_lan_ext, pf_state_compare_lan_ext); 1032 1033 RB_HEAD(pf_state_tree_ext_gwy, pf_state_key); 1034 RB_PROTOTYPE(pf_state_tree_ext_gwy, pf_state_key, 1035 entry_ext_gwy, pf_state_compare_ext_gwy); 1036 1037 RB_HEAD(pfi_ifhead, pfi_kif); 1038 1039 /* state tables */ 1040 extern struct pf_state_tree_lan_ext pf_statetbl_lan_ext; 1041 extern struct pf_state_tree_ext_gwy pf_statetbl_ext_gwy; 1042 1043 /* keep synced with pfi_kif, used in RB_FIND */ 1044 struct pfi_kif_cmp { 1045 char pfik_name[IFNAMSIZ]; 1046 }; 1047 1048 struct pfi_kif { 1049 char pfik_name[IFNAMSIZ]; 1050 RB_ENTRY(pfi_kif) pfik_tree; 1051 u_int64_t pfik_packets[2][2][2]; 1052 u_int64_t pfik_bytes[2][2][2]; 1053 u_int32_t pfik_tzero; 1054 int pfik_flags; 1055 void *pfik_ah_cookie; 1056 struct ifnet *pfik_ifp; 1057 struct ifg_group *pfik_group; 1058 int pfik_states; 1059 int pfik_rules; 1060 TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs; 1061 }; 1062 1063 enum pfi_kif_refs { 1064 PFI_KIF_REF_NONE, 1065 PFI_KIF_REF_STATE, 1066 PFI_KIF_REF_RULE 1067 }; 1068 1069 #define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */ 1070 1071 struct pf_pdesc { 1072 struct { 1073 int done; 1074 uid_t uid; 1075 gid_t gid; 1076 pid_t pid; 1077 } lookup; 1078 u_int64_t tot_len; /* Make Mickey money */ 1079 union { 1080 struct tcphdr *tcp; 1081 struct udphdr *udp; 1082 struct icmp *icmp; 1083 #ifdef INET6 1084 struct icmp6_hdr *icmp6; 1085 #endif /* INET6 */ 1086 void *any; 1087 } hdr; 1088 struct pf_addr baddr; /* address before translation */ 1089 struct pf_addr naddr; /* address after translation */ 1090 struct pf_rule *nat_rule; /* nat/rdr rule applied to packet */ 1091 struct pf_addr *src; 1092 struct pf_addr *dst; 1093 struct ether_header 1094 *eh; 1095 u_int16_t *ip_sum; 1096 u_int32_t p_len; /* total length of payload */ 1097 u_int16_t flags; /* Let SCRUB trigger behavior in 1098 * state code. Easier than tags */ 1099 #define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */ 1100 #define PFDESC_IP_REAS 0x0002 /* IP frags would've been reassembled */ 1101 sa_family_t af; 1102 u_int8_t proto; 1103 u_int8_t tos; 1104 }; 1105 1106 /* flags for RDR options */ 1107 #define PF_DPORT_RANGE 0x01 /* Dest port uses range */ 1108 #define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */ 1109 1110 /* Reasons code for passing/dropping a packet */ 1111 #define PFRES_MATCH 0 /* Explicit match of a rule */ 1112 #define PFRES_BADOFF 1 /* Bad offset for pull_hdr */ 1113 #define PFRES_FRAG 2 /* Dropping following fragment */ 1114 #define PFRES_SHORT 3 /* Dropping short packet */ 1115 #define PFRES_NORM 4 /* Dropping by normalizer */ 1116 #define PFRES_MEMORY 5 /* Dropped due to lacking mem */ 1117 #define PFRES_TS 6 /* Bad TCP Timestamp (RFC1323) */ 1118 #define PFRES_CONGEST 7 /* Congestion (of ipintrq) */ 1119 #define PFRES_IPOPTIONS 8 /* IP option */ 1120 #define PFRES_PROTCKSUM 9 /* Protocol checksum invalid */ 1121 #define PFRES_BADSTATE 10 /* State mismatch */ 1122 #define PFRES_STATEINS 11 /* State insertion failure */ 1123 #define PFRES_MAXSTATES 12 /* State limit */ 1124 #define PFRES_SRCLIMIT 13 /* Source node/conn limit */ 1125 #define PFRES_SYNPROXY 14 /* SYN proxy */ 1126 #define PFRES_STATELOCKED 15 /* state table locked */ 1127 #define PFRES_MAX 16 /* total+1 */ 1128 1129 #define PFRES_NAMES { \ 1130 "match", \ 1131 "bad-offset", \ 1132 "fragment", \ 1133 "short", \ 1134 "normalize", \ 1135 "memory", \ 1136 "bad-timestamp", \ 1137 "congestion", \ 1138 "ip-option", \ 1139 "proto-cksum", \ 1140 "state-mismatch", \ 1141 "state-insert", \ 1142 "state-limit", \ 1143 "src-limit", \ 1144 "synproxy", \ 1145 "state-locked", \ 1146 NULL \ 1147 } 1148 1149 /* Counters for other things we want to keep track of */ 1150 #define LCNT_STATES 0 /* states */ 1151 #define LCNT_SRCSTATES 1 /* max-src-states */ 1152 #define LCNT_SRCNODES 2 /* max-src-nodes */ 1153 #define LCNT_SRCCONN 3 /* max-src-conn */ 1154 #define LCNT_SRCCONNRATE 4 /* max-src-conn-rate */ 1155 #define LCNT_OVERLOAD_TABLE 5 /* entry added to overload table */ 1156 #define LCNT_OVERLOAD_FLUSH 6 /* state entries flushed */ 1157 #define LCNT_MAX 7 /* total+1 */ 1158 1159 #define LCNT_NAMES { \ 1160 "max states per rule", \ 1161 "max-src-states", \ 1162 "max-src-nodes", \ 1163 "max-src-conn", \ 1164 "max-src-conn-rate", \ 1165 "overload table insertion", \ 1166 "overload flush states", \ 1167 NULL \ 1168 } 1169 1170 /* UDP state enumeration */ 1171 #define PFUDPS_NO_TRAFFIC 0 1172 #define PFUDPS_SINGLE 1 1173 #define PFUDPS_MULTIPLE 2 1174 1175 #define PFUDPS_NSTATES 3 /* number of state levels */ 1176 1177 #define PFUDPS_NAMES { \ 1178 "NO_TRAFFIC", \ 1179 "SINGLE", \ 1180 "MULTIPLE", \ 1181 NULL \ 1182 } 1183 1184 /* Other protocol state enumeration */ 1185 #define PFOTHERS_NO_TRAFFIC 0 1186 #define PFOTHERS_SINGLE 1 1187 #define PFOTHERS_MULTIPLE 2 1188 1189 #define PFOTHERS_NSTATES 3 /* number of state levels */ 1190 1191 #define PFOTHERS_NAMES { \ 1192 "NO_TRAFFIC", \ 1193 "SINGLE", \ 1194 "MULTIPLE", \ 1195 NULL \ 1196 } 1197 1198 #define FCNT_STATE_SEARCH 0 1199 #define FCNT_STATE_INSERT 1 1200 #define FCNT_STATE_REMOVALS 2 1201 #define FCNT_MAX 3 1202 1203 #define SCNT_SRC_NODE_SEARCH 0 1204 #define SCNT_SRC_NODE_INSERT 1 1205 #define SCNT_SRC_NODE_REMOVALS 2 1206 #define SCNT_MAX 3 1207 1208 #define ACTION_SET(a, x) \ 1209 do { \ 1210 if ((a) != NULL) \ 1211 *(a) = (x); \ 1212 } while (0) 1213 1214 #define REASON_SET(a, x) \ 1215 do { \ 1216 if ((a) != NULL) \ 1217 *(a) = (x); \ 1218 if (x < PFRES_MAX) \ 1219 pf_status.counters[x]++; \ 1220 } while (0) 1221 1222 struct pf_status { 1223 u_int64_t counters[PFRES_MAX]; 1224 u_int64_t lcounters[LCNT_MAX]; /* limit counters */ 1225 u_int64_t fcounters[FCNT_MAX]; 1226 u_int64_t scounters[SCNT_MAX]; 1227 u_int64_t pcounters[2][2][3]; 1228 u_int64_t bcounters[2][2]; 1229 u_int64_t stateid; 1230 u_int32_t running; 1231 u_int32_t states; 1232 u_int32_t src_nodes; 1233 u_int32_t since; 1234 u_int32_t debug; 1235 u_int32_t hostid; 1236 char ifname[IFNAMSIZ]; 1237 u_int8_t pf_chksum[PF_MD5_DIGEST_LENGTH]; 1238 }; 1239 1240 struct cbq_opts { 1241 u_int minburst; 1242 u_int maxburst; 1243 u_int pktsize; 1244 u_int maxpktsize; 1245 u_int ns_per_byte; 1246 u_int maxidle; 1247 int minidle; 1248 u_int offtime; 1249 int flags; 1250 }; 1251 1252 struct priq_opts { 1253 int flags; 1254 }; 1255 1256 struct hfsc_opts { 1257 /* real-time service curve */ 1258 u_int rtsc_m1; /* slope of the 1st segment in bps */ 1259 u_int rtsc_d; /* the x-projection of m1 in msec */ 1260 u_int rtsc_m2; /* slope of the 2nd segment in bps */ 1261 /* link-sharing service curve */ 1262 u_int lssc_m1; 1263 u_int lssc_d; 1264 u_int lssc_m2; 1265 /* upper-limit service curve */ 1266 u_int ulsc_m1; 1267 u_int ulsc_d; 1268 u_int ulsc_m2; 1269 int flags; 1270 }; 1271 1272 struct pf_altq { 1273 char ifname[IFNAMSIZ]; 1274 1275 void *altq_disc; /* discipline-specific state */ 1276 TAILQ_ENTRY(pf_altq) entries; 1277 1278 /* scheduler spec */ 1279 u_int8_t scheduler; /* scheduler type */ 1280 u_int16_t tbrsize; /* tokenbucket regulator size */ 1281 u_int32_t ifbandwidth; /* interface bandwidth */ 1282 1283 /* queue spec */ 1284 char qname[PF_QNAME_SIZE]; /* queue name */ 1285 char parent[PF_QNAME_SIZE]; /* parent name */ 1286 u_int32_t parent_qid; /* parent queue id */ 1287 u_int32_t bandwidth; /* queue bandwidth */ 1288 u_int8_t priority; /* priority */ 1289 u_int16_t qlimit; /* queue size limit */ 1290 u_int16_t flags; /* misc flags */ 1291 union { 1292 struct cbq_opts cbq_opts; 1293 struct priq_opts priq_opts; 1294 struct hfsc_opts hfsc_opts; 1295 } pq_u; 1296 1297 u_int32_t qid; /* return value */ 1298 }; 1299 1300 struct pf_tag { 1301 u_int16_t tag; /* tag id */ 1302 }; 1303 1304 struct pf_tagname { 1305 TAILQ_ENTRY(pf_tagname) entries; 1306 char name[PF_TAG_NAME_SIZE]; 1307 u_int16_t tag; 1308 int ref; 1309 }; 1310 1311 #define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */ 1312 #define PFFRAG_FRAG_HIWAT 1000 /* Number of fragmented packets */ 1313 #define PFFRAG_FRCENT_HIWAT 50000 /* Number of fragment cache entries */ 1314 #define PFFRAG_FRCACHE_HIWAT 10000 /* Number of fragment descriptors */ 1315 1316 #define PFR_KTABLE_HIWAT 1000 /* Number of tables */ 1317 #define PFR_KENTRY_HIWAT 200000 /* Number of table entries */ 1318 #define PFR_KENTRY_HIWAT_SMALL 100000 /* Number of table entries (tiny hosts) */ 1319 1320 /* 1321 * ioctl parameter structures 1322 */ 1323 1324 struct pfioc_pooladdr { 1325 u_int32_t action; 1326 u_int32_t ticket; 1327 u_int32_t nr; 1328 u_int32_t r_num; 1329 u_int8_t r_action; 1330 u_int8_t r_last; 1331 u_int8_t af; 1332 char anchor[MAXPATHLEN]; 1333 struct pf_pooladdr addr; 1334 }; 1335 1336 struct pfioc_rule { 1337 u_int32_t action; 1338 u_int32_t ticket; 1339 u_int32_t pool_ticket; 1340 u_int32_t nr; 1341 char anchor[MAXPATHLEN]; 1342 char anchor_call[MAXPATHLEN]; 1343 struct pf_rule rule; 1344 }; 1345 1346 struct pfioc_natlook { 1347 struct pf_addr saddr; 1348 struct pf_addr daddr; 1349 struct pf_addr rsaddr; 1350 struct pf_addr rdaddr; 1351 u_int16_t sport; 1352 u_int16_t dport; 1353 u_int16_t rsport; 1354 u_int16_t rdport; 1355 sa_family_t af; 1356 u_int8_t proto; 1357 u_int8_t direction; 1358 }; 1359 1360 struct pfioc_state { 1361 u_int32_t nr; 1362 void *state; 1363 }; 1364 1365 struct pfioc_src_node_kill { 1366 /* XXX returns the number of src nodes killed in psnk_af */ 1367 sa_family_t psnk_af; 1368 struct pf_rule_addr psnk_src; 1369 struct pf_rule_addr psnk_dst; 1370 }; 1371 1372 struct pfioc_state_kill { 1373 /* XXX returns the number of states killed in psk_af */ 1374 sa_family_t psk_af; 1375 int psk_proto; 1376 struct pf_rule_addr psk_src; 1377 struct pf_rule_addr psk_dst; 1378 char psk_ifname[IFNAMSIZ]; 1379 }; 1380 1381 struct pfioc_states { 1382 int ps_len; 1383 union { 1384 void *psu_buf; 1385 struct pfsync_state *psu_states; 1386 } ps_u; 1387 #define ps_buf ps_u.psu_buf 1388 #define ps_states ps_u.psu_states 1389 }; 1390 1391 struct pfioc_src_nodes { 1392 int psn_len; 1393 union { 1394 void *psu_buf; 1395 struct pf_src_node *psu_src_nodes; 1396 } psn_u; 1397 #define psn_buf psn_u.psu_buf 1398 #define psn_src_nodes psn_u.psu_src_nodes 1399 }; 1400 1401 struct pfioc_if { 1402 char ifname[IFNAMSIZ]; 1403 }; 1404 1405 struct pfioc_tm { 1406 int timeout; 1407 int seconds; 1408 }; 1409 1410 struct pfioc_limit { 1411 int index; 1412 unsigned limit; 1413 }; 1414 1415 struct pfioc_altq { 1416 u_int32_t action; 1417 u_int32_t ticket; 1418 u_int32_t nr; 1419 struct pf_altq altq; 1420 }; 1421 1422 struct pfioc_qstats { 1423 u_int32_t ticket; 1424 u_int32_t nr; 1425 void *buf; 1426 int nbytes; 1427 u_int8_t scheduler; 1428 }; 1429 1430 struct pfioc_ruleset { 1431 u_int32_t nr; 1432 char path[MAXPATHLEN]; 1433 char name[PF_ANCHOR_NAME_SIZE]; 1434 }; 1435 1436 #define PF_RULESET_ALTQ (PF_RULESET_MAX) 1437 #define PF_RULESET_TABLE (PF_RULESET_MAX+1) 1438 struct pfioc_trans { 1439 int size; /* number of elements */ 1440 int esize; /* size of each element in bytes */ 1441 struct pfioc_trans_e { 1442 int rs_num; 1443 char anchor[MAXPATHLEN]; 1444 u_int32_t ticket; 1445 } *array; 1446 }; 1447 1448 #define PFR_FLAG_ATOMIC 0x00000001 1449 #define PFR_FLAG_DUMMY 0x00000002 1450 #define PFR_FLAG_FEEDBACK 0x00000004 1451 #define PFR_FLAG_CLSTATS 0x00000008 1452 #define PFR_FLAG_ADDRSTOO 0x00000010 1453 #define PFR_FLAG_REPLACE 0x00000020 1454 #define PFR_FLAG_ALLRSETS 0x00000040 1455 #define PFR_FLAG_ALLMASK 0x0000007F 1456 #ifdef _KERNEL 1457 #define PFR_FLAG_USERIOCTL 0x10000000 1458 #endif 1459 1460 struct pfioc_table { 1461 struct pfr_table pfrio_table; 1462 void *pfrio_buffer; 1463 int pfrio_esize; 1464 int pfrio_size; 1465 int pfrio_size2; 1466 int pfrio_nadd; 1467 int pfrio_ndel; 1468 int pfrio_nchange; 1469 int pfrio_flags; 1470 u_int32_t pfrio_ticket; 1471 }; 1472 #define pfrio_exists pfrio_nadd 1473 #define pfrio_nzero pfrio_nadd 1474 #define pfrio_nmatch pfrio_nadd 1475 #define pfrio_naddr pfrio_size2 1476 #define pfrio_setflag pfrio_size2 1477 #define pfrio_clrflag pfrio_nadd 1478 1479 struct pfioc_iface { 1480 char pfiio_name[IFNAMSIZ]; 1481 void *pfiio_buffer; 1482 int pfiio_esize; 1483 int pfiio_size; 1484 int pfiio_nzero; 1485 int pfiio_flags; 1486 }; 1487 1488 1489 /* 1490 * ioctl operations 1491 */ 1492 1493 #define DIOCSTART _IO ('D', 1) 1494 #define DIOCSTOP _IO ('D', 2) 1495 #define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule) 1496 #define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule) 1497 #define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule) 1498 #define DIOCSETLCK _IOWR('D', 8, uint32_t) 1499 /* XXX cut 9 - 17 */ 1500 #define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill) 1501 #define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state) 1502 #define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if) 1503 #define DIOCGETSTATUS _IOWR('D', 21, struct pf_status) 1504 #define DIOCCLRSTATUS _IO ('D', 22) 1505 #define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook) 1506 #define DIOCSETDEBUG _IOWR('D', 24, u_int32_t) 1507 #define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states) 1508 #define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule) 1509 /* XXX cut 26 - 28 */ 1510 #define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm) 1511 #define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm) 1512 #define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state) 1513 #define DIOCCLRRULECTRS _IO ('D', 38) 1514 #define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit) 1515 #define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit) 1516 #define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill) 1517 #define DIOCSTARTALTQ _IO ('D', 42) 1518 #define DIOCSTOPALTQ _IO ('D', 43) 1519 #define DIOCADDALTQ _IOWR('D', 45, struct pfioc_altq) 1520 #define DIOCGETALTQS _IOWR('D', 47, struct pfioc_altq) 1521 #define DIOCGETALTQ _IOWR('D', 48, struct pfioc_altq) 1522 #define DIOCCHANGEALTQ _IOWR('D', 49, struct pfioc_altq) 1523 #define DIOCGETQSTATS _IOWR('D', 50, struct pfioc_qstats) 1524 #define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr) 1525 #define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr) 1526 #define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr) 1527 #define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr) 1528 #define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr) 1529 #define DIOCADDSTATES _IOWR('D', 56, struct pfioc_states) 1530 /* XXX cut 57 - 57 */ 1531 #define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset) 1532 #define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset) 1533 #define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table) 1534 #define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table) 1535 #define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table) 1536 #define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table) 1537 #define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table) 1538 #define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table) 1539 #define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table) 1540 #define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table) 1541 #define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table) 1542 #define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table) 1543 #define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table) 1544 #define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table) 1545 #define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table) 1546 #define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table) 1547 #define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table) 1548 #define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table) 1549 #define DIOCOSFPFLUSH _IO('D', 78) 1550 #define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl) 1551 #define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl) 1552 #define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans) 1553 #define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans) 1554 #define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans) 1555 #define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes) 1556 #define DIOCCLRSRCNODES _IO('D', 85) 1557 #define DIOCSETHOSTID _IOWR('D', 86, u_int32_t) 1558 #define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface) 1559 #define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface) 1560 #define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface) 1561 #define DIOCKILLSRCNODES _IOWR('D', 91, struct pfioc_src_node_kill) 1562 1563 #ifdef _KERNEL 1564 RB_HEAD(pf_src_tree, pf_src_node); 1565 RB_PROTOTYPE(pf_src_tree, pf_src_node, entry, pf_src_compare); 1566 extern struct pf_src_tree tree_src_tracking; 1567 1568 RB_HEAD(pf_state_tree_id, pf_state); 1569 RB_PROTOTYPE(pf_state_tree_id, pf_state, 1570 entry_id, pf_state_compare_id); 1571 extern struct pf_state_tree_id tree_id; 1572 extern struct pf_state_queue state_list; 1573 1574 TAILQ_HEAD(pf_poolqueue, pf_pool); 1575 extern struct pf_poolqueue pf_pools[2]; 1576 TAILQ_HEAD(pf_altqqueue, pf_altq); 1577 extern struct pf_altqqueue pf_altqs[2]; 1578 extern struct pf_palist pf_pabuf; 1579 1580 extern u_int32_t ticket_altqs_active; 1581 extern u_int32_t ticket_altqs_inactive; 1582 extern int altqs_inactive_open; 1583 extern u_int32_t ticket_pabuf; 1584 extern struct pf_altqqueue *pf_altqs_active; 1585 extern struct pf_altqqueue *pf_altqs_inactive; 1586 extern struct pf_poolqueue *pf_pools_active; 1587 extern struct pf_poolqueue *pf_pools_inactive; 1588 extern int pf_tbladdr_setup(struct pf_ruleset *, 1589 struct pf_addr_wrap *); 1590 extern void pf_tbladdr_remove(struct pf_addr_wrap *); 1591 extern void pf_tbladdr_copyout(struct pf_addr_wrap *); 1592 extern void pf_calc_skip_steps(struct pf_rulequeue *); 1593 extern struct pool pf_src_tree_pl, pf_rule_pl; 1594 extern struct pool pf_state_pl, pf_state_key_pl, pf_altq_pl, 1595 pf_pooladdr_pl; 1596 extern struct pool pf_state_scrub_pl; 1597 extern void pf_purge_thread(void *); 1598 extern void pf_purge_expired_src_nodes(int); 1599 extern void pf_purge_expired_states(u_int32_t); 1600 extern void pf_unlink_state(struct pf_state *); 1601 extern void pf_free_state(struct pf_state *); 1602 extern int pf_insert_state(struct pfi_kif *, 1603 struct pf_state *); 1604 extern int pf_insert_src_node(struct pf_src_node **, 1605 struct pf_rule *, struct pf_addr *, 1606 sa_family_t); 1607 void pf_src_tree_remove_state(struct pf_state *); 1608 extern struct pf_state *pf_find_state_byid(struct pf_state_cmp *); 1609 extern struct pf_state *pf_find_state_all(struct pf_state_key_cmp *, 1610 u_int8_t, int *); 1611 extern void pf_print_state(struct pf_state *); 1612 extern void pf_print_flags(u_int8_t); 1613 extern u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t, 1614 u_int8_t); 1615 1616 extern struct ifnet *sync_ifp; 1617 extern struct pf_rule pf_default_rule; 1618 extern void pf_addrcpy(struct pf_addr *, 1619 const struct pf_addr *, u_int8_t); 1620 void pf_rm_rule(struct pf_rulequeue *, 1621 struct pf_rule *); 1622 1623 #ifdef INET 1624 int pf_test(int, struct ifnet *, struct mbuf **, struct ether_header *); 1625 #endif /* INET */ 1626 1627 #ifdef INET6 1628 int pf_test6(int, struct ifnet *, struct mbuf **, struct ether_header *); 1629 void pf_poolmask(struct pf_addr *, struct pf_addr*, 1630 struct pf_addr *, const struct pf_addr *, u_int8_t); 1631 void pf_addr_inc(struct pf_addr *, sa_family_t); 1632 #endif /* INET6 */ 1633 1634 void *pf_pull_hdr(struct mbuf *, int, void *, int, u_short *, u_short *, 1635 sa_family_t); 1636 void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t); 1637 int pflog_packet(struct pfi_kif *, struct mbuf *, sa_family_t, u_int8_t, 1638 u_int8_t, struct pf_rule *, struct pf_rule *, struct pf_ruleset *, 1639 struct pf_pdesc *); 1640 int pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *, 1641 struct pf_addr *, sa_family_t); 1642 int pf_match(u_int8_t, u_int32_t, u_int32_t, u_int32_t); 1643 int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t); 1644 int pf_match_uid(u_int8_t, uid_t, uid_t, uid_t); 1645 int pf_match_gid(u_int8_t, gid_t, gid_t, gid_t); 1646 1647 void pf_normalize_init(void); 1648 #ifdef _MODULE 1649 void pf_normalize_destroy(void); 1650 #endif /* _MODULE */ 1651 int pf_normalize_ip(struct mbuf **, int, struct pfi_kif *, u_short *, 1652 struct pf_pdesc *); 1653 int pf_normalize_ip6(struct mbuf **, int, struct pfi_kif *, u_short *, 1654 struct pf_pdesc *); 1655 int pf_normalize_tcp(int, struct pfi_kif *, struct mbuf *, int, int, void *, 1656 struct pf_pdesc *); 1657 void pf_normalize_tcp_cleanup(struct pf_state *); 1658 int pf_normalize_tcp_init(struct mbuf *, int, struct pf_pdesc *, 1659 struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *); 1660 int pf_normalize_tcp_stateful(struct mbuf *, int, struct pf_pdesc *, 1661 u_short *, struct tcphdr *, struct pf_state *, 1662 struct pf_state_peer *, struct pf_state_peer *, int *); 1663 u_int32_t 1664 pf_state_expires(const struct pf_state *); 1665 void pf_purge_expired_fragments(void); 1666 int pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kif *); 1667 int pf_rtlabel_match(struct pf_addr *, sa_family_t, struct pf_addr_wrap *); 1668 int pf_socket_lookup(int, struct pf_pdesc *); 1669 struct pf_state_key * 1670 pf_alloc_state_key(struct pf_state *); 1671 void pfr_initialize(void); 1672 #ifdef _MODULE 1673 void pfr_destroy(void); 1674 #endif /* _MODULE */ 1675 int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t); 1676 void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t, 1677 u_int64_t, int, int, int); 1678 int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, 1679 struct pf_addr **, struct pf_addr **, sa_family_t); 1680 void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *); 1681 struct pfr_ktable * 1682 pfr_attach_table(struct pf_ruleset *, char *); 1683 void pfr_detach_table(struct pfr_ktable *); 1684 int pfr_clr_tables(struct pfr_table *, int *, int); 1685 int pfr_add_tables(struct pfr_table *, int, int *, int); 1686 int pfr_del_tables(struct pfr_table *, int, int *, int); 1687 int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int); 1688 int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int); 1689 int pfr_clr_tstats(struct pfr_table *, int, int *, int); 1690 int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int); 1691 int pfr_clr_addrs(struct pfr_table *, int *, int); 1692 int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *, long); 1693 int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1694 int); 1695 int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1696 int); 1697 int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1698 int *, int *, int *, int, u_int32_t); 1699 int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int); 1700 int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int); 1701 int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *, 1702 int); 1703 int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1704 int); 1705 int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int); 1706 int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int); 1707 int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int); 1708 int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *, 1709 int *, u_int32_t, int); 1710 1711 extern struct pfi_kif *pfi_all; 1712 1713 void pfi_initialize(void); 1714 #ifdef _MODULE 1715 void pfi_destroy(void); 1716 #endif /* _MODULE */ 1717 struct pfi_kif *pfi_kif_get(const char *); 1718 void pfi_kif_ref(struct pfi_kif *, enum pfi_kif_refs); 1719 void pfi_kif_unref(struct pfi_kif *, enum pfi_kif_refs); 1720 int pfi_kif_match(struct pfi_kif *, struct pfi_kif *); 1721 void pfi_attach_ifnet(struct ifnet *); 1722 void pfi_detach_ifnet(struct ifnet *); 1723 void pfi_attach_ifgroup(struct ifg_group *); 1724 void pfi_detach_ifgroup(struct ifg_group *); 1725 void pfi_group_change(const char *); 1726 int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *, 1727 sa_family_t); 1728 int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t); 1729 void pfi_dynaddr_remove(struct pf_addr_wrap *); 1730 void pfi_dynaddr_copyout(struct pf_addr_wrap *); 1731 void pfi_fill_oldstatus(struct pf_status *); 1732 int pfi_clr_istats(const char *); 1733 int pfi_get_ifaces(const char *, struct pfi_kif *, int *); 1734 int pfi_set_flags(const char *, int); 1735 int pfi_clear_flags(const char *, int); 1736 1737 u_int16_t pf_tagname2tag(char *); 1738 void pf_tag2tagname(u_int16_t, char *); 1739 void pf_tag_ref(u_int16_t); 1740 void pf_tag_unref(u_int16_t); 1741 int pf_tag_packet(struct mbuf *, int, int); 1742 u_int32_t pf_qname2qid(char *); 1743 void pf_qid2qname(u_int32_t, char *); 1744 void pf_qid_unref(u_int32_t); 1745 1746 extern struct pf_status pf_status; 1747 extern struct pool pf_frent_pl, pf_frag_pl; 1748 #ifdef __NetBSD__ 1749 extern krwlock_t pf_consistency_lock; 1750 #else 1751 extern struct rwlock pf_consistency_lock; 1752 #endif /* !__NetBSD__ */ 1753 1754 struct pf_pool_limit { 1755 void *pp; 1756 unsigned limit; 1757 }; 1758 extern struct pf_pool_limit pf_pool_limits[PF_LIMIT_MAX]; 1759 1760 /* 1761 * misc compatibility definitions 1762 */ 1763 #if !defined(PRIu32) 1764 #define PRIu32 "u" /* XXX */ 1765 #endif 1766 1767 #if !defined(NO_PID) 1768 #define NO_PID (PID_MAX + 1) 1769 #endif 1770 1771 #if defined(__NetBSD__) 1772 /* rwlock compatibility definitions */ 1773 #define rw_enter_write(a) rw_enter((a), (RW_WRITER)) 1774 #define rw_exit_write(a) rw_exit((a)) 1775 #define rw_enter_read(a) rw_enter((a), (RW_READER)) 1776 #define rw_exit_read(a) rw_exit((a)) 1777 #endif /* __NetBSD__ */ 1778 1779 #endif /* _KERNEL */ 1780 1781 extern struct pf_anchor_global pf_anchors; 1782 extern struct pf_anchor pf_main_anchor; 1783 #define pf_main_ruleset pf_main_anchor.ruleset 1784 1785 /* these ruleset functions can be linked into userland programs (pfctl) */ 1786 int pf_get_ruleset_number(u_int8_t); 1787 void pf_init_ruleset(struct pf_ruleset *); 1788 int pf_anchor_setup(struct pf_rule *, 1789 const struct pf_ruleset *, const char *); 1790 int pf_anchor_copyout(const struct pf_ruleset *, 1791 const struct pf_rule *, struct pfioc_rule *); 1792 void pf_anchor_remove(struct pf_rule *); 1793 void pf_remove_if_empty_ruleset(struct pf_ruleset *); 1794 struct pf_anchor *pf_find_anchor(const char *); 1795 struct pf_ruleset *pf_find_ruleset(const char *); 1796 struct pf_ruleset *pf_find_or_create_ruleset(const char *); 1797 void pf_rs_initialize(void); 1798 1799 #ifdef _KERNEL 1800 int pf_anchor_copyout(const struct pf_ruleset *, 1801 const struct pf_rule *, struct pfioc_rule *); 1802 void pf_anchor_remove(struct pf_rule *); 1803 1804 #endif /* _KERNEL */ 1805 1806 /* The fingerprint functions can be linked into userland programs (tcpdump) */ 1807 int pf_osfp_add(struct pf_osfp_ioctl *); 1808 #ifdef _KERNEL 1809 struct pf_osfp_enlist * 1810 pf_osfp_fingerprint(struct pf_pdesc *, struct mbuf *, int, 1811 const struct tcphdr *); 1812 #endif /* _KERNEL */ 1813 struct pf_osfp_enlist * 1814 pf_osfp_fingerprint_hdr(const struct ip *, const struct ip6_hdr *, 1815 const struct tcphdr *); 1816 void pf_osfp_flush(void); 1817 int pf_osfp_get(struct pf_osfp_ioctl *); 1818 void pf_osfp_initialize(void); 1819 #ifdef _MODULE 1820 void pf_osfp_destroy(void); 1821 #endif /* _MODULE */ 1822 int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t); 1823 struct pf_os_fingerprint * 1824 pf_osfp_validate(void); 1825 1826 1827 #endif /* _NET_PFVAR_H_ */ 1828