1 /* $NetBSD: pfvar.h,v 1.22 2014/06/05 23:48:16 rmind 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 #if !defined(__NetBSD__) && !defined(__minix) 45 #include <net/route.h> 46 #include <netinet/ip_ipsp.h> 47 #else /* __NetBSD__ || __minix */ 48 /* files above include netinet/in.h so include it too for compatibility */ 49 #include <netinet/in.h> 50 #endif /* __NetBSD__ || __minix */ 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 struct ip; 59 struct ip6_hdr; 60 61 #define PF_TCPS_PROXY_SRC ((TCP_NSTATES)+0) 62 #define PF_TCPS_PROXY_DST ((TCP_NSTATES)+1) 63 64 #define PF_MD5_DIGEST_LENGTH 16 65 #ifdef MD5_DIGEST_LENGTH 66 #if PF_MD5_DIGEST_LENGTH != MD5_DIGEST_LENGTH 67 #error 68 #endif 69 #endif 70 71 enum { PF_INOUT, PF_IN, PF_OUT }; 72 enum { PF_LAN_EXT, PF_EXT_GWY, PF_ID }; 73 enum { PF_PASS, PF_DROP, PF_SCRUB, PF_NOSCRUB, PF_NAT, PF_NONAT, 74 PF_BINAT, PF_NOBINAT, PF_RDR, PF_NORDR, PF_SYNPROXY_DROP }; 75 enum { PF_RULESET_SCRUB, PF_RULESET_FILTER, PF_RULESET_NAT, 76 PF_RULESET_BINAT, PF_RULESET_RDR, PF_RULESET_MAX }; 77 enum { PF_OP_NONE, PF_OP_IRG, PF_OP_EQ, PF_OP_NE, PF_OP_LT, 78 PF_OP_LE, PF_OP_GT, PF_OP_GE, PF_OP_XRG, PF_OP_RRG }; 79 enum { PF_DEBUG_NONE, PF_DEBUG_URGENT, PF_DEBUG_MISC, PF_DEBUG_NOISY }; 80 enum { PF_CHANGE_NONE, PF_CHANGE_ADD_HEAD, PF_CHANGE_ADD_TAIL, 81 PF_CHANGE_ADD_BEFORE, PF_CHANGE_ADD_AFTER, 82 PF_CHANGE_REMOVE, PF_CHANGE_GET_TICKET }; 83 enum { PF_GET_NONE, PF_GET_CLR_CNTR }; 84 85 /* 86 * Note about PFTM_*: real indices into pf_rule.timeout[] come before 87 * PFTM_MAX, special cases afterwards. See pf_state_expires(). 88 */ 89 enum { PFTM_TCP_FIRST_PACKET, PFTM_TCP_OPENING, PFTM_TCP_ESTABLISHED, 90 PFTM_TCP_CLOSING, PFTM_TCP_FIN_WAIT, PFTM_TCP_CLOSED, 91 PFTM_UDP_FIRST_PACKET, PFTM_UDP_SINGLE, PFTM_UDP_MULTIPLE, 92 PFTM_ICMP_FIRST_PACKET, PFTM_ICMP_ERROR_REPLY, 93 PFTM_OTHER_FIRST_PACKET, PFTM_OTHER_SINGLE, 94 PFTM_OTHER_MULTIPLE, PFTM_FRAG, PFTM_INTERVAL, 95 PFTM_ADAPTIVE_START, PFTM_ADAPTIVE_END, PFTM_SRC_NODE, 96 PFTM_TS_DIFF, PFTM_MAX, PFTM_PURGE, PFTM_UNLINKED, 97 PFTM_UNTIL_PACKET }; 98 99 /* PFTM default values */ 100 #define PFTM_TCP_FIRST_PACKET_VAL 120 /* First TCP packet */ 101 #define PFTM_TCP_OPENING_VAL 30 /* No response yet */ 102 #define PFTM_TCP_ESTABLISHED_VAL 24*60*60/* Established */ 103 #define PFTM_TCP_CLOSING_VAL 15 * 60 /* Half closed */ 104 #define PFTM_TCP_FIN_WAIT_VAL 45 /* Got both FINs */ 105 #define PFTM_TCP_CLOSED_VAL 90 /* Got a RST */ 106 #define PFTM_UDP_FIRST_PACKET_VAL 60 /* First UDP packet */ 107 #define PFTM_UDP_SINGLE_VAL 30 /* Unidirectional */ 108 #define PFTM_UDP_MULTIPLE_VAL 60 /* Bidirectional */ 109 #define PFTM_ICMP_FIRST_PACKET_VAL 20 /* First ICMP packet */ 110 #define PFTM_ICMP_ERROR_REPLY_VAL 10 /* Got error response */ 111 #define PFTM_OTHER_FIRST_PACKET_VAL 60 /* First packet */ 112 #define PFTM_OTHER_SINGLE_VAL 30 /* Unidirectional */ 113 #define PFTM_OTHER_MULTIPLE_VAL 60 /* Bidirectional */ 114 #define PFTM_FRAG_VAL 30 /* Fragment expire */ 115 #define PFTM_INTERVAL_VAL 10 /* Expire interval */ 116 #define PFTM_SRC_NODE_VAL 0 /* Source tracking */ 117 #define PFTM_TS_DIFF_VAL 30 /* Allowed TS diff */ 118 119 enum { PF_NOPFROUTE, PF_FASTROUTE, PF_ROUTETO, PF_DUPTO, PF_REPLYTO }; 120 enum { PF_LIMIT_STATES, PF_LIMIT_SRC_NODES, PF_LIMIT_FRAGS, 121 PF_LIMIT_TABLES, PF_LIMIT_TABLE_ENTRIES, PF_LIMIT_MAX }; 122 #define PF_POOL_IDMASK 0x0f 123 enum { PF_POOL_NONE, PF_POOL_BITMASK, PF_POOL_RANDOM, 124 PF_POOL_SRCHASH, PF_POOL_ROUNDROBIN }; 125 enum { PF_ADDR_ADDRMASK, PF_ADDR_NOROUTE, PF_ADDR_DYNIFTL, 126 PF_ADDR_TABLE, PF_ADDR_RTLABEL, PF_ADDR_URPFFAILED }; 127 #define PF_POOL_TYPEMASK 0x0f 128 #define PF_POOL_STICKYADDR 0x20 129 #define PF_WSCALE_FLAG 0x80 130 #define PF_WSCALE_MASK 0x0f 131 132 #define PF_LOG 0x01 133 #define PF_LOG_ALL 0x02 134 #define PF_LOG_SOCKET_LOOKUP 0x04 135 136 struct pf_addr { 137 union { 138 struct in_addr v4; 139 struct in6_addr v6; 140 u_int8_t addr8[16]; 141 u_int16_t addr16[8]; 142 u_int32_t addr32[4]; 143 } pfa; /* 128-bit address */ 144 #define v4 pfa.v4 145 #define v6 pfa.v6 146 #define addr8 pfa.addr8 147 #define addr16 pfa.addr16 148 #define addr32 pfa.addr32 149 }; 150 151 #define PF_TABLE_NAME_SIZE 32 152 153 #define PFI_AFLAG_NETWORK 0x01 154 #define PFI_AFLAG_BROADCAST 0x02 155 #define PFI_AFLAG_PEER 0x04 156 #define PFI_AFLAG_MODEMASK 0x07 157 #define PFI_AFLAG_NOALIAS 0x08 158 159 #ifndef RTLABEL_LEN 160 #define RTLABEL_LEN 32 161 #endif 162 163 struct pf_addr_wrap { 164 union { 165 struct { 166 struct pf_addr addr; 167 struct pf_addr mask; 168 } a; 169 char ifname[IFNAMSIZ]; 170 char tblname[PF_TABLE_NAME_SIZE]; 171 char rtlabelname[RTLABEL_LEN]; 172 u_int32_t rtlabel; 173 } v; 174 union { 175 struct pfi_dynaddr *dyn; 176 struct pfr_ktable *tbl; 177 int dyncnt; 178 int tblcnt; 179 } p; 180 u_int8_t type; /* PF_ADDR_* */ 181 u_int8_t iflags; /* PFI_AFLAG_* */ 182 }; 183 184 #ifdef _KERNEL 185 186 struct pfi_dynaddr { 187 TAILQ_ENTRY(pfi_dynaddr) entry; 188 struct pf_addr pfid_addr4; 189 struct pf_addr pfid_mask4; 190 struct pf_addr pfid_addr6; 191 struct pf_addr pfid_mask6; 192 struct pfr_ktable *pfid_kt; 193 struct pfi_kif *pfid_kif; 194 void *pfid_hook_cookie; 195 int pfid_net; /* mask or 128 */ 196 int pfid_acnt4; /* address count IPv4 */ 197 int pfid_acnt6; /* address count IPv6 */ 198 sa_family_t pfid_af; /* rule af */ 199 u_int8_t pfid_iflags; /* PFI_AFLAG_* */ 200 }; 201 202 /* 203 * Address manipulation macros 204 */ 205 206 #ifdef INET 207 #ifndef INET6 208 #define PF_INET_ONLY 209 #endif /* ! INET6 */ 210 #endif /* INET */ 211 212 #ifdef INET6 213 #ifndef INET 214 #define PF_INET6_ONLY 215 #endif /* ! INET */ 216 #endif /* INET6 */ 217 218 #ifdef INET 219 #ifdef INET6 220 #define PF_INET_INET6 221 #endif /* INET6 */ 222 #endif /* INET */ 223 224 #else 225 226 #define PF_INET_INET6 227 228 #endif /* _KERNEL */ 229 230 /* Both IPv4 and IPv6 */ 231 #ifdef PF_INET_INET6 232 233 #define PF_AEQ(a, b, c) \ 234 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \ 235 ((a)->addr32[3] == (b)->addr32[3] && \ 236 (a)->addr32[2] == (b)->addr32[2] && \ 237 (a)->addr32[1] == (b)->addr32[1] && \ 238 (a)->addr32[0] == (b)->addr32[0])) \ 239 240 #define PF_ANEQ(a, b, c) \ 241 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \ 242 ((a)->addr32[3] != (b)->addr32[3] || \ 243 (a)->addr32[2] != (b)->addr32[2] || \ 244 (a)->addr32[1] != (b)->addr32[1] || \ 245 (a)->addr32[0] != (b)->addr32[0])) \ 246 247 #define PF_AZERO(a, c) \ 248 ((c == AF_INET && !(a)->addr32[0]) || \ 249 (!(a)->addr32[0] && !(a)->addr32[1] && \ 250 !(a)->addr32[2] && !(a)->addr32[3] )) \ 251 252 #define PF_MATCHA(n, a, m, b, f) \ 253 pf_match_addr(n, a, m, b, f) 254 255 #define PF_ACPY(a, b, f) \ 256 pf_addrcpy(a, b, f) 257 258 #define PF_AINC(a, f) \ 259 pf_addr_inc(a, f) 260 261 #define PF_POOLMASK(a, b, c, d, f) \ 262 pf_poolmask(a, b, c, d, f) 263 264 #else 265 266 /* Just IPv6 */ 267 268 #ifdef PF_INET6_ONLY 269 270 #define PF_AEQ(a, b, c) \ 271 ((a)->addr32[3] == (b)->addr32[3] && \ 272 (a)->addr32[2] == (b)->addr32[2] && \ 273 (a)->addr32[1] == (b)->addr32[1] && \ 274 (a)->addr32[0] == (b)->addr32[0]) \ 275 276 #define PF_ANEQ(a, b, c) \ 277 ((a)->addr32[3] != (b)->addr32[3] || \ 278 (a)->addr32[2] != (b)->addr32[2] || \ 279 (a)->addr32[1] != (b)->addr32[1] || \ 280 (a)->addr32[0] != (b)->addr32[0]) \ 281 282 #define PF_AZERO(a, c) \ 283 (!(a)->addr32[0] && \ 284 !(a)->addr32[1] && \ 285 !(a)->addr32[2] && \ 286 !(a)->addr32[3] ) \ 287 288 #define PF_MATCHA(n, a, m, b, f) \ 289 pf_match_addr(n, a, m, b, f) 290 291 #define PF_ACPY(a, b, f) \ 292 pf_addrcpy(a, b, f) 293 294 #define PF_AINC(a, f) \ 295 pf_addr_inc(a, f) 296 297 #define PF_POOLMASK(a, b, c, d, f) \ 298 pf_poolmask(a, b, c, d, f) 299 300 #else 301 302 /* Just IPv4 */ 303 #ifdef PF_INET_ONLY 304 305 #define PF_AEQ(a, b, c) \ 306 ((a)->addr32[0] == (b)->addr32[0]) 307 308 #define PF_ANEQ(a, b, c) \ 309 ((a)->addr32[0] != (b)->addr32[0]) 310 311 #define PF_AZERO(a, c) \ 312 (!(a)->addr32[0]) 313 314 #define PF_MATCHA(n, a, m, b, f) \ 315 pf_match_addr(n, a, m, b, f) 316 317 #define PF_ACPY(a, b, f) \ 318 (a)->v4.s_addr = (b)->v4.s_addr 319 320 #define PF_AINC(a, f) \ 321 do { \ 322 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \ 323 } while (0) 324 325 #define PF_POOLMASK(a, b, c, d, f) \ 326 do { \ 327 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \ 328 (((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \ 329 } while (0) 330 331 #endif /* PF_INET_ONLY */ 332 #endif /* PF_INET6_ONLY */ 333 #endif /* PF_INET_INET6 */ 334 335 #define PF_MISMATCHAW(aw, x, af, neg, ifp) \ 336 ( \ 337 (((aw)->type == PF_ADDR_NOROUTE && \ 338 pf_routable((x), (af), NULL)) || \ 339 (((aw)->type == PF_ADDR_URPFFAILED && (ifp) != NULL && \ 340 pf_routable((x), (af), (ifp))) || \ 341 ((aw)->type == PF_ADDR_RTLABEL && \ 342 !pf_rtlabel_match((x), (af), (aw))) || \ 343 ((aw)->type == PF_ADDR_TABLE && \ 344 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \ 345 ((aw)->type == PF_ADDR_DYNIFTL && \ 346 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \ 347 ((aw)->type == PF_ADDR_ADDRMASK && \ 348 !PF_AZERO(&(aw)->v.a.mask, (af)) && \ 349 !PF_MATCHA(0, &(aw)->v.a.addr, \ 350 &(aw)->v.a.mask, (x), (af))))) != \ 351 (neg) \ 352 ) 353 354 355 struct pf_rule_uid { 356 uid_t uid[2]; 357 u_int8_t op; 358 }; 359 360 struct pf_rule_gid { 361 uid_t gid[2]; 362 u_int8_t op; 363 }; 364 365 struct pf_rule_addr { 366 struct pf_addr_wrap addr; 367 u_int16_t port[2]; 368 u_int8_t neg; 369 u_int8_t port_op; 370 }; 371 372 struct pf_pooladdr { 373 struct pf_addr_wrap addr; 374 TAILQ_ENTRY(pf_pooladdr) entries; 375 char ifname[IFNAMSIZ]; 376 struct pfi_kif *kif; 377 }; 378 379 TAILQ_HEAD(pf_palist, pf_pooladdr); 380 381 struct pf_poolhashkey { 382 union { 383 u_int8_t key8[16]; 384 u_int16_t key16[8]; 385 u_int32_t key32[4]; 386 } pfk; /* 128-bit hash key */ 387 #define key8 pfk.key8 388 #define key16 pfk.key16 389 #define key32 pfk.key32 390 }; 391 392 struct pf_pool { 393 struct pf_palist list; 394 struct pf_pooladdr *cur; 395 struct pf_poolhashkey key; 396 struct pf_addr counter; 397 int tblidx; 398 u_int16_t proxy_port[2]; 399 u_int8_t port_op; 400 u_int8_t opts; 401 }; 402 403 404 /* A packed Operating System description for fingerprinting */ 405 typedef u_int32_t pf_osfp_t; 406 #define PF_OSFP_ANY ((pf_osfp_t)0) 407 #define PF_OSFP_UNKNOWN ((pf_osfp_t)-1) 408 #define PF_OSFP_NOMATCH ((pf_osfp_t)-2) 409 410 struct pf_osfp_entry { 411 SLIST_ENTRY(pf_osfp_entry) fp_entry; 412 pf_osfp_t fp_os; 413 int fp_enflags; 414 #define PF_OSFP_EXPANDED 0x001 /* expanded entry */ 415 #define PF_OSFP_GENERIC 0x002 /* generic signature */ 416 #define PF_OSFP_NODETAIL 0x004 /* no p0f details */ 417 #define PF_OSFP_LEN 32 418 char fp_class_nm[PF_OSFP_LEN]; 419 char fp_version_nm[PF_OSFP_LEN]; 420 char fp_subtype_nm[PF_OSFP_LEN]; 421 }; 422 #define PF_OSFP_ENTRY_EQ(a, b) \ 423 ((a)->fp_os == (b)->fp_os && \ 424 memcmp((a)->fp_class_nm, (b)->fp_class_nm, PF_OSFP_LEN) == 0 && \ 425 memcmp((a)->fp_version_nm, (b)->fp_version_nm, PF_OSFP_LEN) == 0 && \ 426 memcmp((a)->fp_subtype_nm, (b)->fp_subtype_nm, PF_OSFP_LEN) == 0) 427 428 /* handle pf_osfp_t packing */ 429 #define _FP_RESERVED_BIT 1 /* For the special negative #defines */ 430 #define _FP_UNUSED_BITS 1 431 #define _FP_CLASS_BITS 10 /* OS Class (Windows, Linux) */ 432 #define _FP_VERSION_BITS 10 /* OS version (95, 98, NT, 2.4.54, 3.2) */ 433 #define _FP_SUBTYPE_BITS 10 /* patch level (NT SP4, SP3, ECN patch) */ 434 #define PF_OSFP_UNPACK(osfp, class, version, subtype) do { \ 435 (class) = ((osfp) >> (_FP_VERSION_BITS+_FP_SUBTYPE_BITS)) & \ 436 ((1 << _FP_CLASS_BITS) - 1); \ 437 (version) = ((osfp) >> _FP_SUBTYPE_BITS) & \ 438 ((1 << _FP_VERSION_BITS) - 1);\ 439 (subtype) = (osfp) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 440 } while(0) 441 #define PF_OSFP_PACK(osfp, class, version, subtype) do { \ 442 (osfp) = ((class) & ((1 << _FP_CLASS_BITS) - 1)) << (_FP_VERSION_BITS \ 443 + _FP_SUBTYPE_BITS); \ 444 (osfp) |= ((version) & ((1 << _FP_VERSION_BITS) - 1)) << \ 445 _FP_SUBTYPE_BITS; \ 446 (osfp) |= (subtype) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 447 } while(0) 448 449 /* the fingerprint of an OSes TCP SYN packet */ 450 typedef u_int64_t pf_tcpopts_t; 451 struct pf_os_fingerprint { 452 SLIST_HEAD(pf_osfp_enlist, pf_osfp_entry) fp_oses; /* list of matches */ 453 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 454 u_int16_t fp_wsize; /* TCP window size */ 455 u_int16_t fp_psize; /* ip->ip_len */ 456 u_int16_t fp_mss; /* TCP MSS */ 457 u_int16_t fp_flags; 458 #define PF_OSFP_WSIZE_MOD 0x0001 /* Window modulus */ 459 #define PF_OSFP_WSIZE_DC 0x0002 /* Window don't care */ 460 #define PF_OSFP_WSIZE_MSS 0x0004 /* Window multiple of MSS */ 461 #define PF_OSFP_WSIZE_MTU 0x0008 /* Window multiple of MTU */ 462 #define PF_OSFP_PSIZE_MOD 0x0010 /* packet size modulus */ 463 #define PF_OSFP_PSIZE_DC 0x0020 /* packet size don't care */ 464 #define PF_OSFP_WSCALE 0x0040 /* TCP window scaling */ 465 #define PF_OSFP_WSCALE_MOD 0x0080 /* TCP window scale modulus */ 466 #define PF_OSFP_WSCALE_DC 0x0100 /* TCP window scale dont-care */ 467 #define PF_OSFP_MSS 0x0200 /* TCP MSS */ 468 #define PF_OSFP_MSS_MOD 0x0400 /* TCP MSS modulus */ 469 #define PF_OSFP_MSS_DC 0x0800 /* TCP MSS dont-care */ 470 #define PF_OSFP_DF 0x1000 /* IPv4 don't fragment bit */ 471 #define PF_OSFP_TS0 0x2000 /* Zero timestamp */ 472 #define PF_OSFP_INET6 0x4000 /* IPv6 */ 473 u_int8_t fp_optcnt; /* TCP option count */ 474 u_int8_t fp_wscale; /* TCP window scaling */ 475 u_int8_t fp_ttl; /* IPv4 TTL */ 476 #define PF_OSFP_MAXTTL_OFFSET 40 477 /* TCP options packing */ 478 #define PF_OSFP_TCPOPT_NOP 0x0 /* TCP NOP option */ 479 #define PF_OSFP_TCPOPT_WSCALE 0x1 /* TCP window scaling option */ 480 #define PF_OSFP_TCPOPT_MSS 0x2 /* TCP max segment size opt */ 481 #define PF_OSFP_TCPOPT_SACK 0x3 /* TCP SACK OK option */ 482 #define PF_OSFP_TCPOPT_TS 0x4 /* TCP timestamp option */ 483 #define PF_OSFP_TCPOPT_BITS 3 /* bits used by each option */ 484 #define PF_OSFP_MAX_OPTS \ 485 (sizeof(((struct pf_os_fingerprint *)0)->fp_tcpopts) * 8) \ 486 / PF_OSFP_TCPOPT_BITS 487 488 SLIST_ENTRY(pf_os_fingerprint) fp_next; 489 }; 490 491 struct pf_osfp_ioctl { 492 struct pf_osfp_entry fp_os; 493 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 494 u_int16_t fp_wsize; /* TCP window size */ 495 u_int16_t fp_psize; /* ip->ip_len */ 496 u_int16_t fp_mss; /* TCP MSS */ 497 u_int16_t fp_flags; 498 u_int8_t fp_optcnt; /* TCP option count */ 499 u_int8_t fp_wscale; /* TCP window scaling */ 500 u_int8_t fp_ttl; /* IPv4 TTL */ 501 502 int fp_getnum; /* DIOCOSFPGET number */ 503 }; 504 505 506 union pf_rule_ptr { 507 struct pf_rule *ptr; 508 u_int32_t nr; 509 }; 510 511 #define PF_ANCHOR_NAME_SIZE 64 512 513 struct pf_rule { 514 struct pf_rule_addr src; 515 struct pf_rule_addr dst; 516 #define PF_SKIP_IFP 0 517 #define PF_SKIP_DIR 1 518 #define PF_SKIP_AF 2 519 #define PF_SKIP_PROTO 3 520 #define PF_SKIP_SRC_ADDR 4 521 #define PF_SKIP_SRC_PORT 5 522 #define PF_SKIP_DST_ADDR 6 523 #define PF_SKIP_DST_PORT 7 524 #define PF_SKIP_COUNT 8 525 union pf_rule_ptr skip[PF_SKIP_COUNT]; 526 #define PF_RULE_LABEL_SIZE 64 527 char label[PF_RULE_LABEL_SIZE]; 528 #define PF_QNAME_SIZE 64 529 char ifname[IFNAMSIZ]; 530 char qname[PF_QNAME_SIZE]; 531 char pqname[PF_QNAME_SIZE]; 532 #define PF_TAG_NAME_SIZE 64 533 char tagname[PF_TAG_NAME_SIZE]; 534 char match_tagname[PF_TAG_NAME_SIZE]; 535 536 char overload_tblname[PF_TABLE_NAME_SIZE]; 537 538 TAILQ_ENTRY(pf_rule) entries; 539 struct pf_pool rpool; 540 541 u_int64_t evaluations; 542 u_int64_t packets[2]; 543 u_int64_t bytes[2]; 544 545 struct pfi_kif *kif; 546 struct pf_anchor *anchor; 547 struct pfr_ktable *overload_tbl; 548 549 pf_osfp_t os_fingerprint; 550 551 int rtableid; 552 u_int32_t timeout[PFTM_MAX]; 553 u_int32_t states; 554 u_int32_t max_states; 555 u_int32_t src_nodes; 556 u_int32_t max_src_nodes; 557 u_int32_t max_src_states; 558 u_int32_t max_src_conn; 559 struct { 560 u_int32_t limit; 561 u_int32_t seconds; 562 } max_src_conn_rate; 563 u_int32_t qid; 564 u_int32_t pqid; 565 u_int32_t rt_listid; 566 u_int32_t nr; 567 u_int32_t prob; 568 uid_t cuid; 569 pid_t cpid; 570 571 u_int16_t return_icmp; 572 u_int16_t return_icmp6; 573 u_int16_t max_mss; 574 u_int16_t tag; 575 u_int16_t match_tag; 576 577 struct pf_rule_uid uid; 578 struct pf_rule_gid gid; 579 580 u_int32_t rule_flag; 581 u_int8_t action; 582 u_int8_t direction; 583 u_int8_t log; 584 u_int8_t logif; 585 u_int8_t quick; 586 u_int8_t ifnot; 587 u_int8_t match_tag_not; 588 u_int8_t natpass; 589 590 #define PF_STATE_NORMAL 0x1 591 #define PF_STATE_MODULATE 0x2 592 #define PF_STATE_SYNPROXY 0x3 593 u_int8_t keep_state; 594 sa_family_t af; 595 u_int8_t proto; 596 u_int8_t type; 597 u_int8_t code; 598 u_int8_t flags; 599 u_int8_t flagset; 600 u_int8_t min_ttl; 601 u_int8_t allow_opts; 602 u_int8_t rt; 603 u_int8_t return_ttl; 604 u_int8_t tos; 605 u_int8_t anchor_relative; 606 u_int8_t anchor_wildcard; 607 608 #define PF_FLUSH 0x01 609 #define PF_FLUSH_GLOBAL 0x02 610 u_int8_t flush; 611 }; 612 613 /* rule flags */ 614 #define PFRULE_DROP 0x0000 615 #define PFRULE_RETURNRST 0x0001 616 #define PFRULE_FRAGMENT 0x0002 617 #define PFRULE_RETURNICMP 0x0004 618 #define PFRULE_RETURN 0x0008 619 #define PFRULE_NOSYNC 0x0010 620 #define PFRULE_SRCTRACK 0x0020 /* track source states */ 621 #define PFRULE_RULESRCTRACK 0x0040 /* per rule */ 622 623 /* scrub flags */ 624 #define PFRULE_NODF 0x0100 625 #define PFRULE_FRAGCROP 0x0200 /* non-buffering frag cache */ 626 #define PFRULE_FRAGDROP 0x0400 /* drop funny fragments */ 627 #define PFRULE_RANDOMID 0x0800 628 #define PFRULE_REASSEMBLE_TCP 0x1000 629 630 /* rule flags again */ 631 #define PFRULE_IFBOUND 0x00010000 /* if-bound */ 632 633 #define PFSTATE_HIWAT 10000 /* default state table size */ 634 #define PFSTATE_ADAPT_START 6000 /* default adaptive timeout start */ 635 #define PFSTATE_ADAPT_END 12000 /* default adaptive timeout end */ 636 637 638 struct pf_threshold { 639 u_int32_t limit; 640 #define PF_THRESHOLD_MULT 1000 641 #define PF_THRESHOLD_MAX 0xffffffff / PF_THRESHOLD_MULT 642 u_int32_t seconds; 643 u_int32_t count; 644 u_int32_t last; 645 }; 646 647 struct pf_src_node { 648 RB_ENTRY(pf_src_node) entry; 649 struct pf_addr addr; 650 struct pf_addr raddr; 651 union pf_rule_ptr rule; 652 struct pfi_kif *kif; 653 u_int64_t bytes[2]; 654 u_int64_t packets[2]; 655 u_int32_t states; 656 u_int32_t conn; 657 struct pf_threshold conn_rate; 658 u_int32_t creation; 659 u_int32_t expire; 660 sa_family_t af; 661 u_int8_t ruletype; 662 }; 663 664 #define PFSNODE_HIWAT 10000 /* default source node table size */ 665 666 struct pf_state_scrub { 667 struct timeval pfss_last; /* time received last packet */ 668 u_int32_t pfss_tsecr; /* last echoed timestamp */ 669 u_int32_t pfss_tsval; /* largest timestamp */ 670 u_int32_t pfss_tsval0; /* original timestamp */ 671 u_int16_t pfss_flags; 672 #define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */ 673 #define PFSS_PAWS 0x0010 /* stricter PAWS checks */ 674 #define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */ 675 #define PFSS_DATA_TS 0x0040 /* timestamp on data packets */ 676 #define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */ 677 u_int8_t pfss_ttl; /* stashed TTL */ 678 u_int8_t pad; 679 u_int32_t pfss_ts_mod; /* timestamp modulation */ 680 }; 681 682 struct pf_state_host { 683 struct pf_addr addr; 684 u_int16_t port; 685 u_int16_t pad; 686 }; 687 688 struct pf_state_peer { 689 u_int32_t seqlo; /* Max sequence number sent */ 690 u_int32_t seqhi; /* Max the other end ACKd + win */ 691 u_int32_t seqdiff; /* Sequence number modulator */ 692 u_int16_t max_win; /* largest window (pre scaling) */ 693 u_int8_t state; /* active state level */ 694 u_int8_t wscale; /* window scaling factor */ 695 u_int16_t mss; /* Maximum segment size option */ 696 u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */ 697 struct pf_state_scrub *scrub; /* state is scrubbed */ 698 u_int8_t pad[3]; 699 }; 700 701 TAILQ_HEAD(pf_state_queue, pf_state); 702 703 /* keep synced with struct pf_state_key, used in RB_FIND */ 704 struct pf_state_key_cmp { 705 struct pf_state_host lan; 706 struct pf_state_host gwy; 707 struct pf_state_host ext; 708 sa_family_t af; 709 u_int8_t proto; 710 u_int8_t direction; 711 u_int8_t pad; 712 }; 713 714 TAILQ_HEAD(pf_statelist, pf_state); 715 716 struct pf_state_key { 717 struct pf_state_host lan; 718 struct pf_state_host gwy; 719 struct pf_state_host ext; 720 sa_family_t af; 721 u_int8_t proto; 722 u_int8_t direction; 723 u_int8_t pad; 724 725 RB_ENTRY(pf_state_key) entry_lan_ext; 726 RB_ENTRY(pf_state_key) entry_ext_gwy; 727 struct pf_statelist states; 728 u_short refcnt; /* same size as if_index */ 729 }; 730 731 732 /* keep synced with struct pf_state, used in RB_FIND */ 733 struct pf_state_cmp { 734 u_int64_t id; 735 u_int32_t creatorid; 736 u_int32_t pad; 737 }; 738 739 struct pf_state { 740 u_int64_t id; 741 u_int32_t creatorid; 742 u_int32_t pad; 743 744 TAILQ_ENTRY(pf_state) entry_list; 745 TAILQ_ENTRY(pf_state) next; 746 RB_ENTRY(pf_state) entry_id; 747 struct pf_state_peer src; 748 struct pf_state_peer dst; 749 union pf_rule_ptr rule; 750 union pf_rule_ptr anchor; 751 union pf_rule_ptr nat_rule; 752 struct pf_addr rt_addr; 753 struct pf_state_key *state_key; 754 struct pfi_kif *kif; 755 struct pfi_kif *rt_kif; 756 struct pf_src_node *src_node; 757 struct pf_src_node *nat_src_node; 758 u_int64_t packets[2]; 759 u_int64_t bytes[2]; 760 u_int32_t creation; 761 u_int32_t expire; 762 u_int32_t pfsync_time; 763 u_int16_t tag; 764 u_int8_t log; 765 u_int8_t allow_opts; 766 u_int8_t timeout; 767 u_int8_t sync_flags; 768 #define PFSTATE_NOSYNC 0x01 769 #define PFSTATE_FROMSYNC 0x02 770 #define PFSTATE_STALE 0x04 771 }; 772 773 /* 774 * Unified state structures for pulling states out of the kernel 775 * used by pfsync(4) and the pf(4) ioctl. 776 */ 777 struct pfsync_state_scrub { 778 u_int16_t pfss_flags; 779 u_int8_t pfss_ttl; /* stashed TTL */ 780 #define PFSYNC_SCRUB_FLAG_VALID 0x01 781 u_int8_t scrub_flag; 782 u_int32_t pfss_ts_mod; /* timestamp modulation */ 783 } __packed; 784 785 struct pfsync_state_host { 786 struct pf_addr addr; 787 u_int16_t port; 788 u_int16_t pad[3]; 789 } __packed; 790 791 struct pfsync_state_peer { 792 struct pfsync_state_scrub scrub; /* state is scrubbed */ 793 u_int32_t seqlo; /* Max sequence number sent */ 794 u_int32_t seqhi; /* Max the other end ACKd + win */ 795 u_int32_t seqdiff; /* Sequence number modulator */ 796 u_int16_t max_win; /* largest window (pre scaling) */ 797 u_int16_t mss; /* Maximum segment size option */ 798 u_int8_t state; /* active state level */ 799 u_int8_t wscale; /* window scaling factor */ 800 u_int8_t pad[6]; 801 } __packed; 802 803 struct pfsync_state { 804 u_int32_t id[2]; 805 char ifname[IFNAMSIZ]; 806 struct pfsync_state_host lan; 807 struct pfsync_state_host gwy; 808 struct pfsync_state_host ext; 809 struct pfsync_state_peer src; 810 struct pfsync_state_peer dst; 811 struct pf_addr rt_addr; 812 u_int32_t rule; 813 u_int32_t anchor; 814 u_int32_t nat_rule; 815 u_int32_t creation; 816 u_int32_t expire; 817 u_int32_t packets[2][2]; 818 u_int32_t bytes[2][2]; 819 u_int32_t creatorid; 820 sa_family_t af; 821 u_int8_t proto; 822 u_int8_t direction; 823 u_int8_t log; 824 u_int8_t allow_opts; 825 u_int8_t timeout; 826 u_int8_t sync_flags; 827 u_int8_t updates; 828 } __packed; 829 830 #define PFSYNC_FLAG_COMPRESS 0x01 831 #define PFSYNC_FLAG_STALE 0x02 832 #define PFSYNC_FLAG_SRCNODE 0x04 833 #define PFSYNC_FLAG_NATSRCNODE 0x08 834 835 /* for copies to/from userland via pf_ioctl() */ 836 #define pf_state_peer_to_pfsync(s,d) do { \ 837 (d)->seqlo = (s)->seqlo; \ 838 (d)->seqhi = (s)->seqhi; \ 839 (d)->seqdiff = (s)->seqdiff; \ 840 (d)->max_win = (s)->max_win; \ 841 (d)->mss = (s)->mss; \ 842 (d)->state = (s)->state; \ 843 (d)->wscale = (s)->wscale; \ 844 if ((s)->scrub) { \ 845 (d)->scrub.pfss_flags = \ 846 (s)->scrub->pfss_flags & PFSS_TIMESTAMP; \ 847 (d)->scrub.pfss_ttl = (s)->scrub->pfss_ttl; \ 848 (d)->scrub.pfss_ts_mod = (s)->scrub->pfss_ts_mod; \ 849 (d)->scrub.scrub_flag = PFSYNC_SCRUB_FLAG_VALID; \ 850 } \ 851 } while (0) 852 853 #define pf_state_peer_from_pfsync(s,d) do { \ 854 (d)->seqlo = (s)->seqlo; \ 855 (d)->seqhi = (s)->seqhi; \ 856 (d)->seqdiff = (s)->seqdiff; \ 857 (d)->max_win = (s)->max_win; \ 858 (d)->mss = ntohs((s)->mss); \ 859 (d)->state = (s)->state; \ 860 (d)->wscale = (s)->wscale; \ 861 if ((s)->scrub.scrub_flag == PFSYNC_SCRUB_FLAG_VALID && \ 862 (d)->scrub != NULL) { \ 863 (d)->scrub->pfss_flags = \ 864 ntohs((s)->scrub.pfss_flags) & PFSS_TIMESTAMP; \ 865 (d)->scrub->pfss_ttl = (s)->scrub.pfss_ttl; \ 866 (d)->scrub->pfss_ts_mod = (s)->scrub.pfss_ts_mod; \ 867 } \ 868 } while (0) 869 870 #define pf_state_counter_to_pfsync(s,d) do { \ 871 d[0] = (s>>32)&0xffffffff; \ 872 d[1] = s&0xffffffff; \ 873 } while (0) 874 875 #define pf_state_counter_from_pfsync(s) \ 876 (((u_int64_t)(s[0])<<32) | (u_int64_t)(s[1])) 877 878 879 880 TAILQ_HEAD(pf_rulequeue, pf_rule); 881 882 struct pf_anchor; 883 884 struct pf_ruleset { 885 struct { 886 struct pf_rulequeue queues[2]; 887 struct { 888 struct pf_rulequeue *ptr; 889 struct pf_rule **ptr_array; 890 u_int32_t rcount; 891 u_int32_t ticket; 892 int open; 893 } active, inactive; 894 } rules[PF_RULESET_MAX]; 895 struct pf_anchor *anchor; 896 u_int32_t tticket; 897 int tables; 898 int topen; 899 }; 900 901 RB_HEAD(pf_anchor_global, pf_anchor); 902 RB_HEAD(pf_anchor_node, pf_anchor); 903 struct pf_anchor { 904 RB_ENTRY(pf_anchor) entry_global; 905 RB_ENTRY(pf_anchor) entry_node; 906 struct pf_anchor *parent; 907 struct pf_anchor_node children; 908 char name[PF_ANCHOR_NAME_SIZE]; 909 char path[MAXPATHLEN]; 910 struct pf_ruleset ruleset; 911 int refcnt; /* anchor rules */ 912 int match; 913 }; 914 RB_PROTOTYPE(pf_anchor_global, pf_anchor, entry_global, pf_anchor_compare); 915 RB_PROTOTYPE(pf_anchor_node, pf_anchor, entry_node, pf_anchor_compare); 916 917 #define PF_RESERVED_ANCHOR "_pf" 918 919 #define PFR_TFLAG_PERSIST 0x00000001 920 #define PFR_TFLAG_CONST 0x00000002 921 #define PFR_TFLAG_ACTIVE 0x00000004 922 #define PFR_TFLAG_INACTIVE 0x00000008 923 #define PFR_TFLAG_REFERENCED 0x00000010 924 #define PFR_TFLAG_REFDANCHOR 0x00000020 925 #define PFR_TFLAG_USRMASK 0x00000003 926 #define PFR_TFLAG_SETMASK 0x0000003C 927 #define PFR_TFLAG_ALLMASK 0x0000003F 928 929 struct pfr_table { 930 char pfrt_anchor[MAXPATHLEN]; 931 char pfrt_name[PF_TABLE_NAME_SIZE]; 932 u_int32_t pfrt_flags; 933 u_int8_t pfrt_fback; 934 }; 935 936 enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED, 937 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE, 938 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_MAX }; 939 940 struct pfr_addr { 941 union { 942 struct in_addr _pfra_ip4addr; 943 struct in6_addr _pfra_ip6addr; 944 } pfra_u; 945 u_int8_t pfra_af; 946 u_int8_t pfra_net; 947 u_int8_t pfra_not; 948 u_int8_t pfra_fback; 949 }; 950 #define pfra_ip4addr pfra_u._pfra_ip4addr 951 #define pfra_ip6addr pfra_u._pfra_ip6addr 952 953 enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX }; 954 enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX }; 955 #define PFR_OP_XPASS PFR_OP_ADDR_MAX 956 957 struct pfr_astats { 958 struct pfr_addr pfras_a; 959 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 960 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 961 long pfras_tzero; 962 }; 963 964 enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX }; 965 966 struct pfr_tstats { 967 struct pfr_table pfrts_t; 968 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 969 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 970 u_int64_t pfrts_match; 971 u_int64_t pfrts_nomatch; 972 long pfrts_tzero; 973 int pfrts_cnt; 974 int pfrts_refcnt[PFR_REFCNT_MAX]; 975 }; 976 #define pfrts_name pfrts_t.pfrt_name 977 #define pfrts_flags pfrts_t.pfrt_flags 978 979 #ifndef _SOCKADDR_UNION_DEFINED 980 #define _SOCKADDR_UNION_DEFINED 981 union sockaddr_union { 982 struct sockaddr sa; 983 struct sockaddr_in sin; 984 struct sockaddr_in6 sin6; 985 }; 986 #endif /* _SOCKADDR_UNION_DEFINED */ 987 988 SLIST_HEAD(pfr_kentryworkq, pfr_kentry); 989 struct pfr_kentry { 990 struct radix_node pfrke_node[2]; 991 union sockaddr_union pfrke_sa; 992 u_int64_t pfrke_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 993 u_int64_t pfrke_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 994 SLIST_ENTRY(pfr_kentry) pfrke_workq; 995 long pfrke_tzero; 996 u_int8_t pfrke_af; 997 u_int8_t pfrke_net; 998 u_int8_t pfrke_not; 999 u_int8_t pfrke_mark; 1000 u_int8_t pfrke_intrpool; 1001 }; 1002 1003 SLIST_HEAD(pfr_ktableworkq, pfr_ktable); 1004 RB_HEAD(pfr_ktablehead, pfr_ktable); 1005 struct pfr_ktable { 1006 struct pfr_tstats pfrkt_ts; 1007 RB_ENTRY(pfr_ktable) pfrkt_tree; 1008 SLIST_ENTRY(pfr_ktable) pfrkt_workq; 1009 struct radix_node_head *pfrkt_ip4; 1010 struct radix_node_head *pfrkt_ip6; 1011 struct pfr_ktable *pfrkt_shadow; 1012 struct pfr_ktable *pfrkt_root; 1013 struct pf_ruleset *pfrkt_rs; 1014 long pfrkt_larg; 1015 int pfrkt_nflags; 1016 }; 1017 #define pfrkt_t pfrkt_ts.pfrts_t 1018 #define pfrkt_name pfrkt_t.pfrt_name 1019 #define pfrkt_anchor pfrkt_t.pfrt_anchor 1020 #define pfrkt_ruleset pfrkt_t.pfrt_ruleset 1021 #define pfrkt_flags pfrkt_t.pfrt_flags 1022 #define pfrkt_cnt pfrkt_ts.pfrts_cnt 1023 #define pfrkt_refcnt pfrkt_ts.pfrts_refcnt 1024 #define pfrkt_packets pfrkt_ts.pfrts_packets 1025 #define pfrkt_bytes pfrkt_ts.pfrts_bytes 1026 #define pfrkt_match pfrkt_ts.pfrts_match 1027 #define pfrkt_nomatch pfrkt_ts.pfrts_nomatch 1028 #define pfrkt_tzero pfrkt_ts.pfrts_tzero 1029 1030 RB_HEAD(pf_state_tree_lan_ext, pf_state_key); 1031 RB_PROTOTYPE(pf_state_tree_lan_ext, pf_state_key, 1032 entry_lan_ext, pf_state_compare_lan_ext); 1033 1034 RB_HEAD(pf_state_tree_ext_gwy, pf_state_key); 1035 RB_PROTOTYPE(pf_state_tree_ext_gwy, pf_state_key, 1036 entry_ext_gwy, pf_state_compare_ext_gwy); 1037 1038 RB_HEAD(pfi_ifhead, pfi_kif); 1039 1040 /* state tables */ 1041 extern struct pf_state_tree_lan_ext pf_statetbl_lan_ext; 1042 extern struct pf_state_tree_ext_gwy pf_statetbl_ext_gwy; 1043 1044 /* keep synced with pfi_kif, used in RB_FIND */ 1045 struct pfi_kif_cmp { 1046 char pfik_name[IFNAMSIZ]; 1047 }; 1048 1049 struct pfi_kif { 1050 char pfik_name[IFNAMSIZ]; 1051 RB_ENTRY(pfi_kif) pfik_tree; 1052 u_int64_t pfik_packets[2][2][2]; 1053 u_int64_t pfik_bytes[2][2][2]; 1054 u_int32_t pfik_tzero; 1055 int pfik_flags; 1056 void *pfik_ah_cookie; 1057 struct ifnet *pfik_ifp; 1058 struct ifg_group *pfik_group; 1059 int pfik_states; 1060 int pfik_rules; 1061 TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs; 1062 }; 1063 1064 enum pfi_kif_refs { 1065 PFI_KIF_REF_NONE, 1066 PFI_KIF_REF_STATE, 1067 PFI_KIF_REF_RULE 1068 }; 1069 1070 #define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */ 1071 1072 struct pf_pdesc { 1073 struct { 1074 int done; 1075 uid_t uid; 1076 gid_t gid; 1077 pid_t pid; 1078 } lookup; 1079 u_int64_t tot_len; /* Make Mickey money */ 1080 union { 1081 struct tcphdr *tcp; 1082 struct udphdr *udp; 1083 struct icmp *icmp; 1084 #ifdef INET6 1085 struct icmp6_hdr *icmp6; 1086 #endif /* INET6 */ 1087 void *any; 1088 } hdr; 1089 struct pf_addr baddr; /* address before translation */ 1090 struct pf_addr naddr; /* address after translation */ 1091 struct pf_rule *nat_rule; /* nat/rdr rule applied to packet */ 1092 struct pf_addr *src; 1093 struct pf_addr *dst; 1094 struct ether_header 1095 *eh; 1096 u_int16_t *ip_sum; 1097 u_int32_t p_len; /* total length of payload */ 1098 u_int16_t flags; /* Let SCRUB trigger behavior in 1099 * state code. Easier than tags */ 1100 #define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */ 1101 #define PFDESC_IP_REAS 0x0002 /* IP frags would've been reassembled */ 1102 sa_family_t af; 1103 u_int8_t proto; 1104 u_int8_t tos; 1105 }; 1106 1107 /* flags for RDR options */ 1108 #define PF_DPORT_RANGE 0x01 /* Dest port uses range */ 1109 #define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */ 1110 1111 /* Reasons code for passing/dropping a packet */ 1112 #define PFRES_MATCH 0 /* Explicit match of a rule */ 1113 #define PFRES_BADOFF 1 /* Bad offset for pull_hdr */ 1114 #define PFRES_FRAG 2 /* Dropping following fragment */ 1115 #define PFRES_SHORT 3 /* Dropping short packet */ 1116 #define PFRES_NORM 4 /* Dropping by normalizer */ 1117 #define PFRES_MEMORY 5 /* Dropped due to lacking mem */ 1118 #define PFRES_TS 6 /* Bad TCP Timestamp (RFC1323) */ 1119 #define PFRES_CONGEST 7 /* Congestion (of IP queue) */ 1120 #define PFRES_IPOPTIONS 8 /* IP option */ 1121 #define PFRES_PROTCKSUM 9 /* Protocol checksum invalid */ 1122 #define PFRES_BADSTATE 10 /* State mismatch */ 1123 #define PFRES_STATEINS 11 /* State insertion failure */ 1124 #define PFRES_MAXSTATES 12 /* State limit */ 1125 #define PFRES_SRCLIMIT 13 /* Source node/conn limit */ 1126 #define PFRES_SYNPROXY 14 /* SYN proxy */ 1127 #define PFRES_STATELOCKED 15 /* state table locked */ 1128 #define PFRES_MAX 16 /* total+1 */ 1129 1130 #define PFRES_NAMES { \ 1131 "match", \ 1132 "bad-offset", \ 1133 "fragment", \ 1134 "short", \ 1135 "normalize", \ 1136 "memory", \ 1137 "bad-timestamp", \ 1138 "congestion", \ 1139 "ip-option", \ 1140 "proto-cksum", \ 1141 "state-mismatch", \ 1142 "state-insert", \ 1143 "state-limit", \ 1144 "src-limit", \ 1145 "synproxy", \ 1146 "state-locked", \ 1147 NULL \ 1148 } 1149 1150 /* Counters for other things we want to keep track of */ 1151 #define LCNT_STATES 0 /* states */ 1152 #define LCNT_SRCSTATES 1 /* max-src-states */ 1153 #define LCNT_SRCNODES 2 /* max-src-nodes */ 1154 #define LCNT_SRCCONN 3 /* max-src-conn */ 1155 #define LCNT_SRCCONNRATE 4 /* max-src-conn-rate */ 1156 #define LCNT_OVERLOAD_TABLE 5 /* entry added to overload table */ 1157 #define LCNT_OVERLOAD_FLUSH 6 /* state entries flushed */ 1158 #define LCNT_MAX 7 /* total+1 */ 1159 1160 #define LCNT_NAMES { \ 1161 "max states per rule", \ 1162 "max-src-states", \ 1163 "max-src-nodes", \ 1164 "max-src-conn", \ 1165 "max-src-conn-rate", \ 1166 "overload table insertion", \ 1167 "overload flush states", \ 1168 NULL \ 1169 } 1170 1171 /* UDP state enumeration */ 1172 #define PFUDPS_NO_TRAFFIC 0 1173 #define PFUDPS_SINGLE 1 1174 #define PFUDPS_MULTIPLE 2 1175 1176 #define PFUDPS_NSTATES 3 /* number of state levels */ 1177 1178 #define PFUDPS_NAMES { \ 1179 "NO_TRAFFIC", \ 1180 "SINGLE", \ 1181 "MULTIPLE", \ 1182 NULL \ 1183 } 1184 1185 /* Other protocol state enumeration */ 1186 #define PFOTHERS_NO_TRAFFIC 0 1187 #define PFOTHERS_SINGLE 1 1188 #define PFOTHERS_MULTIPLE 2 1189 1190 #define PFOTHERS_NSTATES 3 /* number of state levels */ 1191 1192 #define PFOTHERS_NAMES { \ 1193 "NO_TRAFFIC", \ 1194 "SINGLE", \ 1195 "MULTIPLE", \ 1196 NULL \ 1197 } 1198 1199 #define FCNT_STATE_SEARCH 0 1200 #define FCNT_STATE_INSERT 1 1201 #define FCNT_STATE_REMOVALS 2 1202 #define FCNT_MAX 3 1203 1204 #define SCNT_SRC_NODE_SEARCH 0 1205 #define SCNT_SRC_NODE_INSERT 1 1206 #define SCNT_SRC_NODE_REMOVALS 2 1207 #define SCNT_MAX 3 1208 1209 #define ACTION_SET(a, x) \ 1210 do { \ 1211 if ((a) != NULL) \ 1212 *(a) = (x); \ 1213 } while (0) 1214 1215 #define REASON_SET(a, x) \ 1216 do { \ 1217 if ((a) != NULL) \ 1218 *(a) = (x); \ 1219 if (x < PFRES_MAX) \ 1220 pf_status.counters[x]++; \ 1221 } while (0) 1222 #define REASON_SET_NOPTR(a, x) \ 1223 do { \ 1224 *(a) = (x); \ 1225 if (x < PFRES_MAX) \ 1226 pf_status.counters[x]++; \ 1227 } while (0) 1228 1229 struct pf_status { 1230 u_int64_t counters[PFRES_MAX]; 1231 u_int64_t lcounters[LCNT_MAX]; /* limit counters */ 1232 u_int64_t fcounters[FCNT_MAX]; 1233 u_int64_t scounters[SCNT_MAX]; 1234 u_int64_t pcounters[2][2][3]; 1235 u_int64_t bcounters[2][2]; 1236 u_int64_t stateid; 1237 u_int32_t running; 1238 u_int32_t states; 1239 u_int32_t src_nodes; 1240 u_int32_t since; 1241 u_int32_t debug; 1242 u_int32_t hostid; 1243 char ifname[IFNAMSIZ]; 1244 u_int8_t pf_chksum[PF_MD5_DIGEST_LENGTH]; 1245 }; 1246 1247 struct cbq_opts { 1248 u_int minburst; 1249 u_int maxburst; 1250 u_int pktsize; 1251 u_int maxpktsize; 1252 u_int ns_per_byte; 1253 u_int maxidle; 1254 int minidle; 1255 u_int offtime; 1256 int flags; 1257 }; 1258 1259 struct priq_opts { 1260 int flags; 1261 }; 1262 1263 struct hfsc_opts { 1264 /* real-time service curve */ 1265 u_int rtsc_m1; /* slope of the 1st segment in bps */ 1266 u_int rtsc_d; /* the x-projection of m1 in msec */ 1267 u_int rtsc_m2; /* slope of the 2nd segment in bps */ 1268 /* link-sharing service curve */ 1269 u_int lssc_m1; 1270 u_int lssc_d; 1271 u_int lssc_m2; 1272 /* upper-limit service curve */ 1273 u_int ulsc_m1; 1274 u_int ulsc_d; 1275 u_int ulsc_m2; 1276 int flags; 1277 }; 1278 1279 struct pf_altq { 1280 char ifname[IFNAMSIZ]; 1281 1282 void *altq_disc; /* discipline-specific state */ 1283 TAILQ_ENTRY(pf_altq) entries; 1284 1285 /* scheduler spec */ 1286 u_int8_t scheduler; /* scheduler type */ 1287 u_int16_t tbrsize; /* tokenbucket regulator size */ 1288 u_int32_t ifbandwidth; /* interface bandwidth */ 1289 1290 /* queue spec */ 1291 char qname[PF_QNAME_SIZE]; /* queue name */ 1292 char parent[PF_QNAME_SIZE]; /* parent name */ 1293 u_int32_t parent_qid; /* parent queue id */ 1294 u_int32_t bandwidth; /* queue bandwidth */ 1295 u_int8_t priority; /* priority */ 1296 u_int16_t qlimit; /* queue size limit */ 1297 u_int16_t flags; /* misc flags */ 1298 union { 1299 struct cbq_opts cbq_opts; 1300 struct priq_opts priq_opts; 1301 struct hfsc_opts hfsc_opts; 1302 } pq_u; 1303 1304 u_int32_t qid; /* return value */ 1305 }; 1306 1307 struct pf_tag { 1308 u_int16_t tag; /* tag id */ 1309 }; 1310 1311 struct pf_tagname { 1312 TAILQ_ENTRY(pf_tagname) entries; 1313 char name[PF_TAG_NAME_SIZE]; 1314 u_int16_t tag; 1315 int ref; 1316 }; 1317 1318 #define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */ 1319 #define PFFRAG_FRAG_HIWAT 1000 /* Number of fragmented packets */ 1320 #define PFFRAG_FRCENT_HIWAT 50000 /* Number of fragment cache entries */ 1321 #define PFFRAG_FRCACHE_HIWAT 10000 /* Number of fragment descriptors */ 1322 1323 #define PFR_KTABLE_HIWAT 1000 /* Number of tables */ 1324 #define PFR_KENTRY_HIWAT 200000 /* Number of table entries */ 1325 #define PFR_KENTRY_HIWAT_SMALL 100000 /* Number of table entries (tiny hosts) */ 1326 1327 /* 1328 * ioctl parameter structures 1329 */ 1330 1331 struct pfioc_pooladdr { 1332 u_int32_t action; 1333 u_int32_t ticket; 1334 u_int32_t nr; 1335 u_int32_t r_num; 1336 u_int8_t r_action; 1337 u_int8_t r_last; 1338 u_int8_t af; 1339 char anchor[MAXPATHLEN]; 1340 struct pf_pooladdr addr; 1341 }; 1342 1343 struct pfioc_rule { 1344 u_int32_t action; 1345 u_int32_t ticket; 1346 u_int32_t pool_ticket; 1347 u_int32_t nr; 1348 char anchor[MAXPATHLEN]; 1349 char anchor_call[MAXPATHLEN]; 1350 struct pf_rule rule; 1351 }; 1352 1353 struct pfioc_natlook { 1354 struct pf_addr saddr; 1355 struct pf_addr daddr; 1356 struct pf_addr rsaddr; 1357 struct pf_addr rdaddr; 1358 u_int16_t sport; 1359 u_int16_t dport; 1360 u_int16_t rsport; 1361 u_int16_t rdport; 1362 sa_family_t af; 1363 u_int8_t proto; 1364 u_int8_t direction; 1365 }; 1366 1367 struct pfioc_state { 1368 u_int32_t nr; 1369 void *state; 1370 }; 1371 1372 struct pfioc_src_node_kill { 1373 /* XXX returns the number of src nodes killed in psnk_af */ 1374 sa_family_t psnk_af; 1375 struct pf_rule_addr psnk_src; 1376 struct pf_rule_addr psnk_dst; 1377 }; 1378 1379 struct pfioc_state_kill { 1380 /* XXX returns the number of states killed in psk_af */ 1381 sa_family_t psk_af; 1382 int psk_proto; 1383 struct pf_rule_addr psk_src; 1384 struct pf_rule_addr psk_dst; 1385 char psk_ifname[IFNAMSIZ]; 1386 }; 1387 1388 struct pfioc_states { 1389 int ps_len; 1390 union { 1391 void *psu_buf; 1392 struct pfsync_state *psu_states; 1393 } ps_u; 1394 #define ps_buf ps_u.psu_buf 1395 #define ps_states ps_u.psu_states 1396 }; 1397 1398 struct pfioc_src_nodes { 1399 int psn_len; 1400 union { 1401 void *psu_buf; 1402 struct pf_src_node *psu_src_nodes; 1403 } psn_u; 1404 #define psn_buf psn_u.psu_buf 1405 #define psn_src_nodes psn_u.psu_src_nodes 1406 }; 1407 1408 struct pfioc_if { 1409 char ifname[IFNAMSIZ]; 1410 }; 1411 1412 struct pfioc_tm { 1413 int timeout; 1414 int seconds; 1415 }; 1416 1417 struct pfioc_limit { 1418 int index; 1419 unsigned limit; 1420 }; 1421 1422 struct pfioc_altq { 1423 u_int32_t action; 1424 u_int32_t ticket; 1425 u_int32_t nr; 1426 struct pf_altq altq; 1427 }; 1428 1429 struct pfioc_qstats { 1430 u_int32_t ticket; 1431 u_int32_t nr; 1432 void *buf; 1433 int nbytes; 1434 u_int8_t scheduler; 1435 }; 1436 1437 struct pfioc_ruleset { 1438 u_int32_t nr; 1439 char path[MAXPATHLEN]; 1440 char name[PF_ANCHOR_NAME_SIZE]; 1441 }; 1442 1443 #define PF_RULESET_ALTQ (PF_RULESET_MAX) 1444 #define PF_RULESET_TABLE (PF_RULESET_MAX+1) 1445 struct pfioc_trans { 1446 int size; /* number of elements */ 1447 int esize; /* size of each element in bytes */ 1448 struct pfioc_trans_e { 1449 int rs_num; 1450 char anchor[MAXPATHLEN]; 1451 u_int32_t ticket; 1452 } *array; 1453 }; 1454 1455 #define PFR_FLAG_ATOMIC 0x00000001 1456 #define PFR_FLAG_DUMMY 0x00000002 1457 #define PFR_FLAG_FEEDBACK 0x00000004 1458 #define PFR_FLAG_CLSTATS 0x00000008 1459 #define PFR_FLAG_ADDRSTOO 0x00000010 1460 #define PFR_FLAG_REPLACE 0x00000020 1461 #define PFR_FLAG_ALLRSETS 0x00000040 1462 #define PFR_FLAG_ALLMASK 0x0000007F 1463 #ifdef _KERNEL 1464 #define PFR_FLAG_USERIOCTL 0x10000000 1465 #endif 1466 1467 struct pfioc_table { 1468 struct pfr_table pfrio_table; 1469 void *pfrio_buffer; 1470 int pfrio_esize; 1471 int pfrio_size; 1472 int pfrio_size2; 1473 int pfrio_nadd; 1474 int pfrio_ndel; 1475 int pfrio_nchange; 1476 int pfrio_flags; 1477 u_int32_t pfrio_ticket; 1478 }; 1479 #define pfrio_exists pfrio_nadd 1480 #define pfrio_nzero pfrio_nadd 1481 #define pfrio_nmatch pfrio_nadd 1482 #define pfrio_naddr pfrio_size2 1483 #define pfrio_setflag pfrio_size2 1484 #define pfrio_clrflag pfrio_nadd 1485 1486 struct pfioc_iface { 1487 char pfiio_name[IFNAMSIZ]; 1488 void *pfiio_buffer; 1489 int pfiio_esize; 1490 int pfiio_size; 1491 int pfiio_nzero; 1492 int pfiio_flags; 1493 }; 1494 1495 1496 /* 1497 * ioctl operations 1498 */ 1499 1500 #define DIOCSTART _IO ('D', 1) 1501 #define DIOCSTOP _IO ('D', 2) 1502 #define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule) 1503 #define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule) 1504 #define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule) 1505 #define DIOCSETLCK _IOWR('D', 8, uint32_t) 1506 /* XXX cut 9 - 17 */ 1507 #define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill) 1508 #define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state) 1509 #define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if) 1510 #define DIOCGETSTATUS _IOWR('D', 21, struct pf_status) 1511 #define DIOCCLRSTATUS _IO ('D', 22) 1512 #define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook) 1513 #define DIOCSETDEBUG _IOWR('D', 24, u_int32_t) 1514 #define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states) 1515 #define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule) 1516 /* XXX cut 26 - 28 */ 1517 #define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm) 1518 #define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm) 1519 #define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state) 1520 #define DIOCCLRRULECTRS _IO ('D', 38) 1521 #define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit) 1522 #define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit) 1523 #define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill) 1524 #define DIOCSTARTALTQ _IO ('D', 42) 1525 #define DIOCSTOPALTQ _IO ('D', 43) 1526 #define DIOCADDALTQ _IOWR('D', 45, struct pfioc_altq) 1527 #define DIOCGETALTQS _IOWR('D', 47, struct pfioc_altq) 1528 #define DIOCGETALTQ _IOWR('D', 48, struct pfioc_altq) 1529 #define DIOCCHANGEALTQ _IOWR('D', 49, struct pfioc_altq) 1530 #define DIOCGETQSTATS _IOWR('D', 50, struct pfioc_qstats) 1531 #define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr) 1532 #define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr) 1533 #define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr) 1534 #define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr) 1535 #define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr) 1536 #define DIOCADDSTATES _IOWR('D', 56, struct pfioc_states) 1537 /* XXX cut 57 - 57 */ 1538 #define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset) 1539 #define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset) 1540 #define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table) 1541 #define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table) 1542 #define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table) 1543 #define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table) 1544 #define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table) 1545 #define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table) 1546 #define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table) 1547 #define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table) 1548 #define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table) 1549 #define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table) 1550 #define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table) 1551 #define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table) 1552 #define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table) 1553 #define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table) 1554 #define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table) 1555 #define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table) 1556 #define DIOCOSFPFLUSH _IO('D', 78) 1557 #define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl) 1558 #define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl) 1559 #define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans) 1560 #define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans) 1561 #define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans) 1562 #define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes) 1563 #define DIOCCLRSRCNODES _IO('D', 85) 1564 #define DIOCSETHOSTID _IOWR('D', 86, u_int32_t) 1565 #define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface) 1566 #define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface) 1567 #define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface) 1568 #define DIOCKILLSRCNODES _IOWR('D', 91, struct pfioc_src_node_kill) 1569 1570 #ifdef _KERNEL 1571 RB_HEAD(pf_src_tree, pf_src_node); 1572 RB_PROTOTYPE(pf_src_tree, pf_src_node, entry, pf_src_compare); 1573 extern struct pf_src_tree tree_src_tracking; 1574 1575 RB_HEAD(pf_state_tree_id, pf_state); 1576 RB_PROTOTYPE(pf_state_tree_id, pf_state, 1577 entry_id, pf_state_compare_id); 1578 extern struct pf_state_tree_id tree_id; 1579 extern struct pf_state_queue state_list; 1580 1581 TAILQ_HEAD(pf_poolqueue, pf_pool); 1582 extern struct pf_poolqueue pf_pools[2]; 1583 TAILQ_HEAD(pf_altqqueue, pf_altq); 1584 extern struct pf_altqqueue pf_altqs[2]; 1585 extern struct pf_palist pf_pabuf; 1586 1587 extern u_int32_t ticket_altqs_active; 1588 extern u_int32_t ticket_altqs_inactive; 1589 extern int altqs_inactive_open; 1590 extern u_int32_t ticket_pabuf; 1591 extern struct pf_altqqueue *pf_altqs_active; 1592 extern struct pf_altqqueue *pf_altqs_inactive; 1593 extern struct pf_poolqueue *pf_pools_active; 1594 extern struct pf_poolqueue *pf_pools_inactive; 1595 extern int pf_tbladdr_setup(struct pf_ruleset *, 1596 struct pf_addr_wrap *); 1597 extern void pf_tbladdr_remove(struct pf_addr_wrap *); 1598 extern void pf_tbladdr_copyout(struct pf_addr_wrap *); 1599 extern void pf_calc_skip_steps(struct pf_rulequeue *); 1600 extern struct pool pf_src_tree_pl, pf_rule_pl; 1601 extern struct pool pf_state_pl, pf_state_key_pl, pf_altq_pl, 1602 pf_pooladdr_pl; 1603 extern struct pool pf_state_scrub_pl; 1604 extern void pf_purge_thread(void *); 1605 extern void pf_purge_expired_src_nodes(int); 1606 extern void pf_purge_expired_states(u_int32_t); 1607 extern void pf_unlink_state(struct pf_state *); 1608 extern void pf_free_state(struct pf_state *); 1609 extern int pf_insert_state(struct pfi_kif *, 1610 struct pf_state *); 1611 extern int pf_insert_src_node(struct pf_src_node **, 1612 struct pf_rule *, struct pf_addr *, 1613 sa_family_t); 1614 void pf_src_tree_remove_state(struct pf_state *); 1615 extern struct pf_state *pf_find_state_byid(struct pf_state_cmp *); 1616 extern struct pf_state *pf_find_state_all(struct pf_state_key_cmp *, 1617 u_int8_t, int *); 1618 extern void pf_print_state(struct pf_state *); 1619 extern void pf_print_flags(u_int8_t); 1620 extern u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t, 1621 u_int8_t); 1622 1623 extern struct ifnet *sync_ifp; 1624 extern struct pf_rule pf_default_rule; 1625 extern void pf_addrcpy(struct pf_addr *, 1626 const struct pf_addr *, u_int8_t); 1627 void pf_rm_rule(struct pf_rulequeue *, 1628 struct pf_rule *); 1629 1630 #ifdef INET 1631 int pf_test(int, struct ifnet *, struct mbuf **, struct ether_header *); 1632 #endif /* INET */ 1633 1634 #ifdef INET6 1635 int pf_test6(int, struct ifnet *, struct mbuf **, struct ether_header *); 1636 void pf_poolmask(struct pf_addr *, struct pf_addr*, 1637 struct pf_addr *, const struct pf_addr *, u_int8_t); 1638 void pf_addr_inc(struct pf_addr *, sa_family_t); 1639 #endif /* INET6 */ 1640 1641 void *pf_pull_hdr(struct mbuf *, int, void *, int, u_short *, u_short *, 1642 sa_family_t); 1643 void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t); 1644 int pflog_packet(struct pfi_kif *, struct mbuf *, sa_family_t, u_int8_t, 1645 u_int8_t, struct pf_rule *, struct pf_rule *, struct pf_ruleset *, 1646 struct pf_pdesc *); 1647 int pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *, 1648 struct pf_addr *, sa_family_t); 1649 int pf_match(u_int8_t, u_int32_t, u_int32_t, u_int32_t); 1650 int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t); 1651 int pf_match_uid(u_int8_t, uid_t, uid_t, uid_t); 1652 int pf_match_gid(u_int8_t, gid_t, gid_t, gid_t); 1653 1654 void pf_normalize_init(void); 1655 #ifdef _MODULE 1656 void pf_normalize_destroy(void); 1657 #endif /* _MODULE */ 1658 int pf_normalize_ip(struct mbuf **, int, struct pfi_kif *, u_short *, 1659 struct pf_pdesc *); 1660 int pf_normalize_ip6(struct mbuf **, int, struct pfi_kif *, u_short *, 1661 struct pf_pdesc *); 1662 int pf_normalize_tcp(int, struct pfi_kif *, struct mbuf *, int, int, void *, 1663 struct pf_pdesc *); 1664 void pf_normalize_tcp_cleanup(struct pf_state *); 1665 int pf_normalize_tcp_init(struct mbuf *, int, struct pf_pdesc *, 1666 struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *); 1667 int pf_normalize_tcp_stateful(struct mbuf *, int, struct pf_pdesc *, 1668 u_short *, struct tcphdr *, struct pf_state *, 1669 struct pf_state_peer *, struct pf_state_peer *, int *); 1670 u_int32_t 1671 pf_state_expires(const struct pf_state *); 1672 void pf_purge_expired_fragments(void); 1673 int pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kif *); 1674 int pf_rtlabel_match(struct pf_addr *, sa_family_t, struct pf_addr_wrap *); 1675 int pf_socket_lookup(int, struct pf_pdesc *); 1676 struct pf_state_key * 1677 pf_alloc_state_key(struct pf_state *); 1678 void pfr_initialize(void); 1679 #ifdef _MODULE 1680 void pfr_destroy(void); 1681 #endif /* _MODULE */ 1682 int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t); 1683 void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t, 1684 u_int64_t, int, int, int); 1685 int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, 1686 struct pf_addr **, struct pf_addr **, sa_family_t); 1687 void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *); 1688 struct pfr_ktable * 1689 pfr_attach_table(struct pf_ruleset *, char *); 1690 void pfr_detach_table(struct pfr_ktable *); 1691 int pfr_clr_tables(struct pfr_table *, int *, int); 1692 int pfr_add_tables(struct pfr_table *, int, int *, int); 1693 int pfr_del_tables(struct pfr_table *, int, int *, int); 1694 int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int); 1695 int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int); 1696 int pfr_clr_tstats(struct pfr_table *, int, int *, int); 1697 int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int); 1698 int pfr_clr_addrs(struct pfr_table *, int *, int); 1699 int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *, long); 1700 int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1701 int); 1702 int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1703 int); 1704 int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1705 int *, int *, int *, int, u_int32_t); 1706 int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int); 1707 int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int); 1708 int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *, 1709 int); 1710 int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1711 int); 1712 int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int); 1713 int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int); 1714 int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int); 1715 int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *, 1716 int *, u_int32_t, int); 1717 1718 extern struct pfi_kif *pfi_all; 1719 1720 void pfi_initialize(void); 1721 #ifdef _MODULE 1722 void pfi_destroy(void); 1723 #endif /* _MODULE */ 1724 struct pfi_kif *pfi_kif_get(const char *); 1725 void pfi_kif_ref(struct pfi_kif *, enum pfi_kif_refs); 1726 void pfi_kif_unref(struct pfi_kif *, enum pfi_kif_refs); 1727 int pfi_kif_match(struct pfi_kif *, struct pfi_kif *); 1728 void pfi_attach_ifnet(struct ifnet *); 1729 void pfi_detach_ifnet(struct ifnet *); 1730 void pfi_attach_ifgroup(struct ifg_group *); 1731 void pfi_detach_ifgroup(struct ifg_group *); 1732 void pfi_group_change(const char *); 1733 int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *, 1734 sa_family_t); 1735 int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t); 1736 void pfi_dynaddr_remove(struct pf_addr_wrap *); 1737 void pfi_dynaddr_copyout(struct pf_addr_wrap *); 1738 void pfi_fill_oldstatus(struct pf_status *); 1739 int pfi_clr_istats(const char *); 1740 int pfi_get_ifaces(const char *, struct pfi_kif *, int *); 1741 int pfi_set_flags(const char *, int); 1742 int pfi_clear_flags(const char *, int); 1743 1744 u_int16_t pf_tagname2tag(char *); 1745 void pf_tag2tagname(u_int16_t, char *); 1746 void pf_tag_ref(u_int16_t); 1747 void pf_tag_unref(u_int16_t); 1748 int pf_tag_packet(struct mbuf *, int, int); 1749 u_int32_t pf_qname2qid(char *); 1750 void pf_qid2qname(u_int32_t, char *); 1751 void pf_qid_unref(u_int32_t); 1752 1753 extern struct pf_status pf_status; 1754 extern struct pool pf_frent_pl, pf_frag_pl; 1755 #ifdef __NetBSD__ 1756 extern krwlock_t pf_consistency_lock; 1757 #else 1758 extern struct rwlock pf_consistency_lock; 1759 #endif /* !__NetBSD__ */ 1760 1761 struct pf_pool_limit { 1762 void *pp; 1763 unsigned limit; 1764 }; 1765 extern struct pf_pool_limit pf_pool_limits[PF_LIMIT_MAX]; 1766 1767 /* 1768 * misc compatibility definitions 1769 */ 1770 #if !defined(PRIu32) 1771 #define PRIu32 "u" /* XXX */ 1772 #endif 1773 1774 #if !defined(NO_PID) 1775 #define NO_PID (PID_MAX + 1) 1776 #endif 1777 1778 #if defined(__NetBSD__) 1779 /* rwlock compatibility definitions */ 1780 #define rw_enter_write(a) rw_enter((a), (RW_WRITER)) 1781 #define rw_exit_write(a) rw_exit((a)) 1782 #define rw_enter_read(a) rw_enter((a), (RW_READER)) 1783 #define rw_exit_read(a) rw_exit((a)) 1784 #endif /* __NetBSD__ */ 1785 1786 #endif /* _KERNEL */ 1787 1788 extern struct pf_anchor_global pf_anchors; 1789 extern struct pf_anchor pf_main_anchor; 1790 #define pf_main_ruleset pf_main_anchor.ruleset 1791 1792 /* these ruleset functions can be linked into userland programs (pfctl) */ 1793 int pf_get_ruleset_number(u_int8_t); 1794 void pf_init_ruleset(struct pf_ruleset *); 1795 int pf_anchor_setup(struct pf_rule *, 1796 const struct pf_ruleset *, const char *); 1797 int pf_anchor_copyout(const struct pf_ruleset *, 1798 const struct pf_rule *, struct pfioc_rule *); 1799 void pf_anchor_remove(struct pf_rule *); 1800 void pf_remove_if_empty_ruleset(struct pf_ruleset *); 1801 struct pf_anchor *pf_find_anchor(const char *); 1802 struct pf_ruleset *pf_find_ruleset(const char *); 1803 struct pf_ruleset *pf_find_or_create_ruleset(const char *); 1804 void pf_rs_initialize(void); 1805 1806 #ifdef _KERNEL 1807 int pf_anchor_copyout(const struct pf_ruleset *, 1808 const struct pf_rule *, struct pfioc_rule *); 1809 void pf_anchor_remove(struct pf_rule *); 1810 1811 #endif /* _KERNEL */ 1812 1813 /* The fingerprint functions can be linked into userland programs (tcpdump) */ 1814 int pf_osfp_add(struct pf_osfp_ioctl *); 1815 #ifdef _KERNEL 1816 struct pf_osfp_enlist * 1817 pf_osfp_fingerprint(struct pf_pdesc *, struct mbuf *, int, 1818 const struct tcphdr *); 1819 #endif /* _KERNEL */ 1820 struct pf_osfp_enlist * 1821 pf_osfp_fingerprint_hdr(const struct ip *, const struct ip6_hdr *, 1822 const struct tcphdr *); 1823 void pf_osfp_flush(void); 1824 int pf_osfp_get(struct pf_osfp_ioctl *); 1825 void pf_osfp_initialize(void); 1826 #ifdef _MODULE 1827 void pf_osfp_destroy(void); 1828 #endif /* _MODULE */ 1829 int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t); 1830 struct pf_os_fingerprint * 1831 pf_osfp_validate(void); 1832 1833 1834 #endif /* _NET_PFVAR_H_ */ 1835