1 /** $MirOS: src/sys/net/pfvar.h,v 1.8 2006/10/17 20:48:51 tg Exp $ */ 2 /* $OpenBSD: pfvar.h,v 1.194 2004/05/11 07:34:11 dhartmei 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/types.h> 38 #include <sys/queue.h> 39 #include <sys/tree.h> 40 41 #include <net/radix.h> 42 #include <netinet/ip_ipsp.h> 43 #include <netinet/tcp_fsm.h> 44 45 struct ip; 46 47 #define PF_TCPS_PROXY_SRC ((TCP_NSTATES)+0) 48 #define PF_TCPS_PROXY_DST ((TCP_NSTATES)+1) 49 50 enum { PF_INOUT, PF_IN, PF_OUT }; 51 enum { PF_LAN_EXT, PF_EXT_GWY, PF_ID }; 52 enum { PF_PASS, PF_DROP, PF_SCRUB, PF_NAT, PF_NONAT, 53 PF_BINAT, PF_NOBINAT, PF_RDR, PF_NORDR, PF_SYNPROXY_DROP }; 54 enum { PF_RULESET_SCRUB, PF_RULESET_FILTER, PF_RULESET_NAT, 55 PF_RULESET_BINAT, PF_RULESET_RDR, PF_RULESET_MAX }; 56 enum { PF_OP_NONE, PF_OP_IRG, PF_OP_EQ, PF_OP_NE, PF_OP_LT, 57 PF_OP_LE, PF_OP_GT, PF_OP_GE, PF_OP_XRG, PF_OP_RRG }; 58 enum { PF_DEBUG_NONE, PF_DEBUG_URGENT, PF_DEBUG_MISC, PF_DEBUG_NOISY }; 59 enum { PF_CHANGE_NONE, PF_CHANGE_ADD_HEAD, PF_CHANGE_ADD_TAIL, 60 PF_CHANGE_ADD_BEFORE, PF_CHANGE_ADD_AFTER, 61 PF_CHANGE_REMOVE, PF_CHANGE_GET_TICKET }; 62 63 /* 64 * Note about PFTM_*: real indices into pf_rule.timeout[] come before 65 * PFTM_MAX, special cases afterwards. See pf_state_expires(). 66 */ 67 enum { PFTM_TCP_FIRST_PACKET, PFTM_TCP_OPENING, PFTM_TCP_ESTABLISHED, 68 PFTM_TCP_CLOSING, PFTM_TCP_FIN_WAIT, PFTM_TCP_CLOSED, 69 PFTM_UDP_FIRST_PACKET, PFTM_UDP_SINGLE, PFTM_UDP_MULTIPLE, 70 PFTM_ICMP_FIRST_PACKET, PFTM_ICMP_ERROR_REPLY, 71 PFTM_OTHER_FIRST_PACKET, PFTM_OTHER_SINGLE, 72 PFTM_OTHER_MULTIPLE, PFTM_FRAG, PFTM_INTERVAL, 73 PFTM_ADAPTIVE_START, PFTM_ADAPTIVE_END, PFTM_SRC_NODE, 74 PFTM_TS_DIFF, PFTM_MAX, PFTM_PURGE, PFTM_UNTIL_PACKET }; 75 enum { PF_NOPFROUTE, PF_FASTROUTE, PF_ROUTETO, PF_DUPTO, PF_REPLYTO }; 76 enum { PF_LIMIT_STATES, PF_LIMIT_SRC_NODES, PF_LIMIT_FRAGS, PF_LIMIT_MAX }; 77 #define PF_POOL_IDMASK 0x0f 78 enum { PF_POOL_NONE, PF_POOL_BITMASK, PF_POOL_RANDOM, 79 PF_POOL_SRCHASH, PF_POOL_ROUNDROBIN }; 80 enum { PF_ADDR_ADDRMASK, PF_ADDR_NOROUTE, PF_ADDR_DYNIFTL_doesnotwork, 81 PF_ADDR_TABLE }; 82 #define PF_POOL_TYPEMASK 0x0f 83 #define PF_POOL_STICKYADDR 0x20 84 #define PF_WSCALE_FLAG 0x80 85 #define PF_WSCALE_MASK 0x0f 86 87 #define PF_LOG 0x01 88 #define PF_LOG_ALL 0x02 89 #define PF_LOG_SOCKET_LOOKUP 0x04 90 91 struct pf_addr { 92 union { 93 struct in_addr v4; 94 struct in6_addr v6; 95 u_int8_t addr8[16]; 96 u_int16_t addr16[8]; 97 u_int32_t addr32[4]; 98 } pfa; /* 128-bit address */ 99 #define v4 pfa.v4 100 #define v6 pfa.v6 101 #define addr8 pfa.addr8 102 #define addr16 pfa.addr16 103 #define addr32 pfa.addr32 104 }; 105 106 #define PF_TABLE_NAME_SIZE 32 107 108 #define PFI_AFLAG_NETWORK 0x01 109 #define PFI_AFLAG_BROADCAST 0x02 110 #define PFI_AFLAG_PEER 0x04 111 #define PFI_AFLAG_MODEMASK 0x07 112 #define PFI_AFLAG_NOALIAS 0x08 113 114 struct pf_addr_wrap { 115 union { 116 struct { 117 struct pf_addr addr; 118 struct pf_addr mask; 119 } a; 120 char ifname[IFNAMSIZ]; 121 char tblname[PF_TABLE_NAME_SIZE]; 122 } v; 123 union { 124 struct pfi_dynaddr *dyn; 125 struct pfr_ktable *tbl; 126 int dyncnt; 127 int tblcnt; 128 } p; 129 u_int8_t type; /* PF_ADDR_* */ 130 u_int8_t iflags; /* PFI_AFLAG_* */ 131 }; 132 133 #ifdef _KERNEL 134 135 struct pfi_dynaddr { 136 struct pf_addr pfid_addr4; 137 struct pf_addr pfid_mask4; 138 struct pf_addr pfid_addr6; 139 struct pf_addr pfid_mask6; 140 struct pfr_ktable *pfid_kt; 141 struct pfi_kif *pfid_kif; 142 void *pfid_hook_cookie; 143 int pfid_net; /* optional mask, or 128 */ 144 int pfid_acnt4; /* address count, IPv4 */ 145 int pfid_acnt6; /* address count, IPv6 */ 146 sa_family_t pfid_af; /* rule address family */ 147 u_int8_t pfid_iflags; /* PFI_AFLAG_* */ 148 }; 149 150 /* 151 * Address manipulation macros 152 */ 153 154 #ifdef INET 155 #ifndef INET6 156 #define PF_INET_ONLY 157 #endif /* ! INET6 */ 158 #endif /* INET */ 159 160 #ifdef INET6 161 #ifndef INET 162 #define PF_INET6_ONLY 163 #endif /* ! INET */ 164 #endif /* INET6 */ 165 166 #ifdef INET 167 #ifdef INET6 168 #define PF_INET_INET6 169 #endif /* INET6 */ 170 #endif /* INET */ 171 172 #else 173 174 #define PF_INET_INET6 175 176 #endif /* _KERNEL */ 177 178 /* Both IPv4 and IPv6 */ 179 #ifdef PF_INET_INET6 180 181 #define PF_AEQ(a, b, c) \ 182 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \ 183 ((a)->addr32[3] == (b)->addr32[3] && \ 184 (a)->addr32[2] == (b)->addr32[2] && \ 185 (a)->addr32[1] == (b)->addr32[1] && \ 186 (a)->addr32[0] == (b)->addr32[0])) \ 187 188 #define PF_ANEQ(a, b, c) \ 189 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \ 190 ((a)->addr32[3] != (b)->addr32[3] || \ 191 (a)->addr32[2] != (b)->addr32[2] || \ 192 (a)->addr32[1] != (b)->addr32[1] || \ 193 (a)->addr32[0] != (b)->addr32[0])) \ 194 195 #define PF_AZERO(a, c) \ 196 ((c == AF_INET && !(a)->addr32[0]) || \ 197 (!(a)->addr32[0] && !(a)->addr32[1] && \ 198 !(a)->addr32[2] && !(a)->addr32[3] )) \ 199 200 #define PF_MATCHA(n, a, m, b, f) \ 201 pf_match_addr(n, a, m, b, f) 202 203 #define PF_ACPY(a, b, f) \ 204 pf_addrcpy(a, b, f) 205 206 #define PF_AINC(a, f) \ 207 pf_addr_inc(a, f) 208 209 #define PF_POOLMASK(a, b, c, d, f) \ 210 pf_poolmask(a, b, c, d, f) 211 212 #else 213 214 /* Just IPv6 */ 215 216 #ifdef PF_INET6_ONLY 217 218 #define PF_AEQ(a, b, c) \ 219 ((a)->addr32[3] == (b)->addr32[3] && \ 220 (a)->addr32[2] == (b)->addr32[2] && \ 221 (a)->addr32[1] == (b)->addr32[1] && \ 222 (a)->addr32[0] == (b)->addr32[0]) \ 223 224 #define PF_ANEQ(a, b, c) \ 225 ((a)->addr32[3] != (b)->addr32[3] || \ 226 (a)->addr32[2] != (b)->addr32[2] || \ 227 (a)->addr32[1] != (b)->addr32[1] || \ 228 (a)->addr32[0] != (b)->addr32[0]) \ 229 230 #define PF_AZERO(a, c) \ 231 (!(a)->addr32[0] && \ 232 !(a)->addr32[1] && \ 233 !(a)->addr32[2] && \ 234 !(a)->addr32[3] ) \ 235 236 #define PF_MATCHA(n, a, m, b, f) \ 237 pf_match_addr(n, a, m, b, f) 238 239 #define PF_ACPY(a, b, f) \ 240 pf_addrcpy(a, b, f) 241 242 #define PF_AINC(a, f) \ 243 pf_addr_inc(a, f) 244 245 #define PF_POOLMASK(a, b, c, d, f) \ 246 pf_poolmask(a, b, c, d, f) 247 248 #else 249 250 /* Just IPv4 */ 251 #ifdef PF_INET_ONLY 252 253 #define PF_AEQ(a, b, c) \ 254 ((a)->addr32[0] == (b)->addr32[0]) 255 256 #define PF_ANEQ(a, b, c) \ 257 ((a)->addr32[0] != (b)->addr32[0]) 258 259 #define PF_AZERO(a, c) \ 260 (!(a)->addr32[0]) 261 262 #define PF_MATCHA(n, a, m, b, f) \ 263 pf_match_addr(n, a, m, b, f) 264 265 #define PF_ACPY(a, b, f) \ 266 (a)->v4.s_addr = (b)->v4.s_addr 267 268 #define PF_AINC(a, f) \ 269 do { \ 270 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \ 271 } while (0) 272 273 #define PF_POOLMASK(a, b, c, d, f) \ 274 do { \ 275 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \ 276 (((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \ 277 } while (0) 278 279 #endif /* PF_INET_ONLY */ 280 #endif /* PF_INET6_ONLY */ 281 #endif /* PF_INET_INET6 */ 282 283 #define PF_MISMATCHAW(aw, x, af, not) \ 284 ( \ 285 (((aw)->type == PF_ADDR_NOROUTE && \ 286 pf_routable((x), (af))) || \ 287 ((aw)->type == PF_ADDR_TABLE && \ 288 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \ 289 ((aw)->type == PF_ADDR_ADDRMASK && \ 290 !PF_AZERO(&(aw)->v.a.mask, (af)) && \ 291 !PF_MATCHA(0, &(aw)->v.a.addr, \ 292 &(aw)->v.a.mask, (x), (af)))) != \ 293 (not) \ 294 ) 295 296 struct pf_rule_uid { 297 uid_t uid[2]; 298 u_int8_t op; 299 }; 300 301 struct pf_rule_gid { 302 uid_t gid[2]; 303 u_int8_t op; 304 }; 305 306 struct pf_rule_addr { 307 struct pf_addr_wrap addr; 308 u_int16_t port[2]; 309 u_int8_t not; 310 u_int8_t port_op; 311 }; 312 313 struct pf_pooladdr { 314 struct pf_addr_wrap addr; 315 TAILQ_ENTRY(pf_pooladdr) entries; 316 char ifname[IFNAMSIZ]; 317 struct pfi_kif *kif; 318 }; 319 320 TAILQ_HEAD(pf_palist, pf_pooladdr); 321 322 struct pf_poolhashkey { 323 union { 324 u_int8_t key8[16]; 325 u_int16_t key16[8]; 326 u_int32_t key32[4]; 327 } pfk; /* 128-bit hash key */ 328 #define key8 pfk.key8 329 #define key16 pfk.key16 330 #define key32 pfk.key32 331 }; 332 333 struct pf_pool { 334 struct pf_palist list; 335 struct pf_pooladdr *cur; 336 struct pf_poolhashkey key; 337 struct pf_addr counter; 338 int tblidx; 339 u_int16_t proxy_port[2]; 340 u_int8_t port_op; 341 u_int8_t opts; 342 }; 343 344 345 /* A packed Operating System description for fingerprinting */ 346 typedef u_int32_t pf_osfp_t; 347 #define PF_OSFP_ANY ((pf_osfp_t)0) 348 #define PF_OSFP_UNKNOWN ((pf_osfp_t)-1) 349 #define PF_OSFP_NOMATCH ((pf_osfp_t)-2) 350 351 struct pf_osfp_entry { 352 SLIST_ENTRY(pf_osfp_entry) fp_entry; 353 pf_osfp_t fp_os; 354 int fp_enflags; 355 #define PF_OSFP_EXPANDED 0x001 /* expanded entry */ 356 #define PF_OSFP_GENERIC 0x002 /* generic signature */ 357 #define PF_OSFP_NODETAIL 0x004 /* no p0f details */ 358 #define PF_OSFP_LEN 32 359 char fp_class_nm[PF_OSFP_LEN]; 360 char fp_version_nm[PF_OSFP_LEN]; 361 char fp_subtype_nm[PF_OSFP_LEN]; 362 }; 363 #define PF_OSFP_ENTRY_EQ(a, b) \ 364 ((a)->fp_os == (b)->fp_os && \ 365 memcmp((a)->fp_class_nm, (b)->fp_class_nm, PF_OSFP_LEN) == 0 && \ 366 memcmp((a)->fp_version_nm, (b)->fp_version_nm, PF_OSFP_LEN) == 0 && \ 367 memcmp((a)->fp_subtype_nm, (b)->fp_subtype_nm, PF_OSFP_LEN) == 0) 368 369 /* handle pf_osfp_t packing */ 370 #define _FP_RESERVED_BIT 1 /* For the special negative #defines */ 371 #define _FP_UNUSED_BITS 1 372 #define _FP_CLASS_BITS 10 /* OS Class (Windows, Linux) */ 373 #define _FP_VERSION_BITS 10 /* OS version (95, 98, NT, 2.4.54, 3.2) */ 374 #define _FP_SUBTYPE_BITS 10 /* patch level (NT SP4, SP3, ECN patch) */ 375 #define PF_OSFP_UNPACK(osfp, class, version, subtype) do { \ 376 (class) = ((osfp) >> (_FP_VERSION_BITS+_FP_SUBTYPE_BITS)) & \ 377 ((1 << _FP_CLASS_BITS) - 1); \ 378 (version) = ((osfp) >> _FP_SUBTYPE_BITS) & \ 379 ((1 << _FP_VERSION_BITS) - 1);\ 380 (subtype) = (osfp) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 381 } while(0) 382 #define PF_OSFP_PACK(osfp, class, version, subtype) do { \ 383 (osfp) = ((class) & ((1 << _FP_CLASS_BITS) - 1)) << (_FP_VERSION_BITS \ 384 + _FP_SUBTYPE_BITS); \ 385 (osfp) |= ((version) & ((1 << _FP_VERSION_BITS) - 1)) << \ 386 _FP_SUBTYPE_BITS; \ 387 (osfp) |= (subtype) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 388 } while(0) 389 390 /* the fingerprint of an OSes TCP SYN packet */ 391 typedef u_int64_t pf_tcpopts_t; 392 struct pf_os_fingerprint { 393 SLIST_HEAD(pf_osfp_enlist, pf_osfp_entry) fp_oses; /* list of matches */ 394 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 395 u_int16_t fp_wsize; /* TCP window size */ 396 u_int16_t fp_psize; /* ip->ip_len */ 397 u_int16_t fp_mss; /* TCP MSS */ 398 u_int16_t fp_flags; 399 #define PF_OSFP_WSIZE_MOD 0x0001 /* Window modulus */ 400 #define PF_OSFP_WSIZE_DC 0x0002 /* Window don't care */ 401 #define PF_OSFP_WSIZE_MSS 0x0004 /* Window multiple of MSS */ 402 #define PF_OSFP_WSIZE_MTU 0x0008 /* Window multiple of MTU */ 403 #define PF_OSFP_PSIZE_MOD 0x0010 /* packet size modulus */ 404 #define PF_OSFP_PSIZE_DC 0x0020 /* packet size don't care */ 405 #define PF_OSFP_WSCALE 0x0040 /* TCP window scaling */ 406 #define PF_OSFP_WSCALE_MOD 0x0080 /* TCP window scale modulus */ 407 #define PF_OSFP_WSCALE_DC 0x0100 /* TCP window scale dont-care */ 408 #define PF_OSFP_MSS 0x0200 /* TCP MSS */ 409 #define PF_OSFP_MSS_MOD 0x0400 /* TCP MSS modulus */ 410 #define PF_OSFP_MSS_DC 0x0800 /* TCP MSS dont-care */ 411 #define PF_OSFP_DF 0x1000 /* IPv4 don't fragment bit */ 412 #define PF_OSFP_TS0 0x2000 /* Zero timestamp */ 413 u_int8_t fp_optcnt; /* TCP option count */ 414 u_int8_t fp_wscale; /* TCP window scaling */ 415 u_int8_t fp_ttl; /* IPv4 TTL */ 416 #define PF_OSFP_MAXTTL_OFFSET 40 417 /* TCP options packing */ 418 #define PF_OSFP_TCPOPT_NOP 0x0 /* TCP NOP option */ 419 #define PF_OSFP_TCPOPT_WSCALE 0x1 /* TCP window scaling option */ 420 #define PF_OSFP_TCPOPT_MSS 0x2 /* TCP max segment size opt */ 421 #define PF_OSFP_TCPOPT_SACK 0x3 /* TCP SACK OK option */ 422 #define PF_OSFP_TCPOPT_TS 0x4 /* TCP timestamp option */ 423 #define PF_OSFP_TCPOPT_BITS 3 /* bits used by each option */ 424 #define PF_OSFP_MAX_OPTS \ 425 (sizeof(((struct pf_os_fingerprint *)0)->fp_tcpopts) * 8) \ 426 / PF_OSFP_TCPOPT_BITS 427 428 SLIST_ENTRY(pf_os_fingerprint) fp_next; 429 }; 430 431 struct pf_osfp_ioctl { 432 struct pf_osfp_entry fp_os; 433 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 434 u_int16_t fp_wsize; /* TCP window size */ 435 u_int16_t fp_psize; /* ip->ip_len */ 436 u_int16_t fp_mss; /* TCP MSS */ 437 u_int16_t fp_flags; 438 u_int8_t fp_optcnt; /* TCP option count */ 439 u_int8_t fp_wscale; /* TCP window scaling */ 440 u_int8_t fp_ttl; /* IPv4 TTL */ 441 442 int fp_getnum; /* DIOCOSFPGET number */ 443 }; 444 445 446 union pf_rule_ptr { 447 struct pf_rule *ptr; 448 u_int32_t nr; 449 }; 450 451 struct pf_rule { 452 struct pf_rule_addr src; 453 struct pf_rule_addr dst; 454 #define PF_SKIP_IFP 0 455 #define PF_SKIP_DIR 1 456 #define PF_SKIP_AF 2 457 #define PF_SKIP_PROTO 3 458 #define PF_SKIP_SRC_ADDR 4 459 #define PF_SKIP_SRC_PORT 5 460 #define PF_SKIP_DST_ADDR 6 461 #define PF_SKIP_DST_PORT 7 462 #define PF_SKIP_COUNT 8 463 union pf_rule_ptr skip[PF_SKIP_COUNT]; 464 #define PF_RULE_LABEL_SIZE 64 465 char label[PF_RULE_LABEL_SIZE]; 466 #define PF_QNAME_SIZE 16 467 char ifname[IFNAMSIZ]; 468 char qname[PF_QNAME_SIZE]; 469 char pqname[PF_QNAME_SIZE]; 470 #define PF_ANCHOR_NAME_SIZE 16 471 char anchorname[PF_ANCHOR_NAME_SIZE]; 472 #define PF_TAG_NAME_SIZE 16 473 char tagname[PF_TAG_NAME_SIZE]; 474 char match_tagname[PF_TAG_NAME_SIZE]; 475 476 TAILQ_ENTRY(pf_rule) entries; 477 struct pf_pool rpool; 478 479 u_int64_t evaluations; 480 u_int64_t packets; 481 u_int64_t bytes; 482 483 struct pfi_kif *kif; 484 struct pf_anchor *anchor; 485 486 pf_osfp_t os_fingerprint; 487 488 u_int32_t timeout[PFTM_MAX]; 489 u_int32_t states; 490 u_int32_t max_states; 491 u_int32_t src_nodes; 492 u_int32_t max_src_nodes; 493 u_int32_t max_src_states; 494 u_int32_t qid; 495 u_int32_t pqid; 496 u_int32_t rt_listid; 497 u_int32_t nr; 498 u_int32_t prob; 499 500 u_int16_t return_icmp; 501 u_int16_t return_icmp6; 502 u_int16_t max_mss; 503 u_int16_t tag; 504 u_int16_t match_tag; 505 506 struct pf_rule_uid uid; 507 struct pf_rule_gid gid; 508 509 u_int32_t rule_flag; 510 u_int8_t action; 511 u_int8_t direction; 512 u_int8_t log; 513 u_int8_t quick; 514 u_int8_t ifnot; 515 u_int8_t match_tag_not; 516 u_int8_t natpass; 517 518 #define PF_STATE_NORMAL 0x1 519 #define PF_STATE_MODULATE 0x2 520 #define PF_STATE_SYNPROXY 0x3 521 u_int8_t keep_state; 522 sa_family_t af; 523 u_int8_t proto; 524 u_int8_t type; 525 u_int8_t code; 526 u_int8_t flags; 527 u_int8_t flagset; 528 u_int8_t min_ttl; 529 u_int8_t allow_opts; 530 u_int8_t rt; 531 u_int8_t return_ttl; 532 u_int8_t tos; 533 }; 534 535 /* rule flags */ 536 #define PFRULE_DROP 0x0000 537 #define PFRULE_RETURNRST 0x0001 538 #define PFRULE_FRAGMENT 0x0002 539 #define PFRULE_RETURNICMP 0x0004 540 #define PFRULE_RETURN 0x0008 541 #define PFRULE_NOSYNC 0x0010 542 #define PFRULE_SRCTRACK 0x0020 /* track source states */ 543 #define PFRULE_RULESRCTRACK 0x0040 /* per rule */ 544 545 /* scrub flags */ 546 #define PFRULE_NODF 0x0100 547 #define PFRULE_FRAGCROP 0x0200 /* non-buffering frag cache */ 548 #define PFRULE_FRAGDROP 0x0400 /* drop funny fragments */ 549 #define PFRULE_RANDOMID 0x0800 550 #define PFRULE_REASSEMBLE_TCP 0x1000 551 552 /* rule flags again */ 553 #define PFRULE_IFBOUND 0x00010000 /* if-bound */ 554 #define PFRULE_GRBOUND 0x00020000 /* group-bound */ 555 556 #define PFSTATE_HIWAT 10000 /* default state table size */ 557 558 struct pf_src_node { 559 RB_ENTRY(pf_src_node) entry; 560 struct pf_addr addr; 561 struct pf_addr raddr; 562 union pf_rule_ptr rule; 563 struct pfi_kif *kif; 564 u_int32_t bytes; 565 u_int32_t packets; 566 u_int32_t states; 567 u_int32_t creation; /* XXX time_t vs uint32_t */ 568 u_int32_t expire; /* XXX time_t vs uint32_t */ 569 sa_family_t af; 570 u_int8_t ruletype; 571 }; 572 573 #define PFSNODE_HIWAT 10000 /* default source node table size */ 574 575 struct pf_state_scrub { 576 struct timeval pfss_last; /* time received last packet */ 577 u_int32_t pfss_tsecr; /* last echoed timestamp */ 578 u_int32_t pfss_tsval; /* largest timestamp */ 579 u_int32_t pfss_tsval0; /* original timestamp */ 580 u_int16_t pfss_flags; 581 #define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */ 582 #define PFSS_PAWS 0x0010 /* stricter PAWS checks */ 583 #define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */ 584 #define PFSS_DATA_TS 0x0040 /* timestamp on data packets */ 585 #define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */ 586 u_int8_t pfss_ttl; /* stashed TTL */ 587 u_int8_t pad; 588 u_int32_t pfss_ts_mod; /* timestamp modulation */ 589 }; 590 591 struct pf_state_host { 592 struct pf_addr addr; 593 u_int16_t port; 594 u_int16_t pad; 595 }; 596 597 struct pf_state_peer { 598 u_int32_t seqlo; /* Max sequence number sent */ 599 u_int32_t seqhi; /* Max the other end ACKd + win */ 600 u_int32_t seqdiff; /* Sequence number modulator */ 601 u_int16_t max_win; /* largest window (pre scaling) */ 602 u_int8_t state; /* active state level */ 603 u_int8_t wscale; /* window scaling factor */ 604 u_int16_t mss; /* Maximum segment size option */ 605 struct pf_state_scrub *scrub; /* state is scrubbed */ 606 }; 607 608 TAILQ_HEAD(pf_state_queue, pf_state); 609 610 struct pf_state { 611 u_int64_t id; 612 union { 613 struct { 614 RB_ENTRY(pf_state) entry_lan_ext; 615 RB_ENTRY(pf_state) entry_ext_gwy; 616 RB_ENTRY(pf_state) entry_id; 617 TAILQ_ENTRY(pf_state) entry_updates; 618 struct pfi_kif *kif; 619 } s; 620 char ifname[IFNAMSIZ]; 621 } u; 622 struct pf_state_host lan; 623 struct pf_state_host gwy; 624 struct pf_state_host ext; 625 struct pf_state_peer src; 626 struct pf_state_peer dst; 627 union pf_rule_ptr rule; 628 union pf_rule_ptr anchor; 629 union pf_rule_ptr nat_rule; 630 struct pf_addr rt_addr; 631 struct pfi_kif *rt_kif; 632 struct pf_src_node *src_node; 633 struct pf_src_node *nat_src_node; 634 u_int32_t creation; /* XXX time_t vs uint32_t */ 635 u_int32_t expire; /* XXX time_t vs uint32_t */ 636 u_int32_t pfsync_time; 637 u_int32_t packets[2]; 638 u_int32_t bytes[2]; 639 u_int32_t creatorid; 640 sa_family_t af; 641 u_int8_t proto; 642 u_int8_t direction; 643 u_int8_t log; 644 u_int8_t allow_opts; 645 u_int8_t timeout; 646 u_int8_t sync_flags; 647 #define PFSTATE_NOSYNC 0x01 648 #define PFSTATE_FROMSYNC 0x02 649 u_int8_t pad; 650 }; 651 652 TAILQ_HEAD(pf_rulequeue, pf_rule); 653 654 struct pf_anchor; 655 656 struct pf_ruleset { 657 TAILQ_ENTRY(pf_ruleset) entries; 658 #define PF_RULESET_NAME_SIZE 16 659 char name[PF_RULESET_NAME_SIZE]; 660 struct { 661 struct pf_rulequeue queues[2]; 662 struct { 663 struct pf_rulequeue *ptr; 664 u_int32_t ticket; 665 int open; 666 } active, inactive; 667 } rules[PF_RULESET_MAX]; 668 struct pf_anchor *anchor; 669 u_int32_t tticket; 670 int tables; 671 int topen; 672 }; 673 674 TAILQ_HEAD(pf_rulesetqueue, pf_ruleset); 675 676 struct pf_anchor { 677 TAILQ_ENTRY(pf_anchor) entries; 678 char name[PF_ANCHOR_NAME_SIZE]; 679 struct pf_rulesetqueue rulesets; 680 int tables; 681 int refcnt; /* anchor rules */ 682 }; 683 684 TAILQ_HEAD(pf_anchorqueue, pf_anchor); 685 686 #define PF_RESERVED_ANCHOR "_pf" 687 #define PF_INTERFACE_RULESET "_if" 688 689 #define PFR_TFLAG_PERSIST 0x00000001 690 #define PFR_TFLAG_CONST 0x00000002 691 #define PFR_TFLAG_ACTIVE 0x00000004 692 #define PFR_TFLAG_INACTIVE 0x00000008 693 #define PFR_TFLAG_REFERENCED 0x00000010 694 #define PFR_TFLAG_REFDANCHOR 0x00000020 695 #define PFR_TFLAG_USRMASK 0x00000003 696 #define PFR_TFLAG_SETMASK 0x0000003C 697 #define PFR_TFLAG_ALLMASK 0x0000003F 698 699 struct pfr_table { 700 char pfrt_anchor[PF_ANCHOR_NAME_SIZE]; 701 char pfrt_ruleset[PF_RULESET_NAME_SIZE]; 702 char pfrt_name[PF_TABLE_NAME_SIZE]; 703 u_int32_t pfrt_flags; 704 u_int8_t pfrt_fback; 705 }; 706 707 enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED, 708 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE, 709 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_MAX }; 710 711 struct pfr_addr { 712 union { 713 struct in_addr _pfra_ip4addr; 714 struct in6_addr _pfra_ip6addr; 715 } pfra_u; 716 u_int8_t pfra_af; 717 u_int8_t pfra_net; 718 u_int8_t pfra_not; 719 u_int8_t pfra_fback; 720 }; 721 #define pfra_ip4addr pfra_u._pfra_ip4addr 722 #define pfra_ip6addr pfra_u._pfra_ip6addr 723 724 enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX }; 725 enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX }; 726 #define PFR_OP_XPASS PFR_OP_ADDR_MAX 727 728 struct pfr_astats { 729 struct pfr_addr pfras_a; 730 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 731 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 732 long pfras_tzero; 733 }; 734 735 enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX }; 736 737 struct pfr_tstats { 738 struct pfr_table pfrts_t; 739 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 740 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 741 u_int64_t pfrts_match; 742 u_int64_t pfrts_nomatch; 743 long pfrts_tzero; 744 int pfrts_cnt; 745 int pfrts_refcnt[PFR_REFCNT_MAX]; 746 }; 747 #define pfrts_name pfrts_t.pfrt_name 748 #define pfrts_flags pfrts_t.pfrt_flags 749 750 SLIST_HEAD(pfr_kentryworkq, pfr_kentry); 751 struct pfr_kentry { 752 struct radix_node pfrke_node[2]; 753 union sockaddr_union pfrke_sa; 754 u_int64_t pfrke_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 755 u_int64_t pfrke_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 756 SLIST_ENTRY(pfr_kentry) pfrke_workq; 757 long pfrke_tzero; 758 u_int8_t pfrke_af; 759 u_int8_t pfrke_net; 760 u_int8_t pfrke_not; 761 u_int8_t pfrke_mark; 762 }; 763 764 SLIST_HEAD(pfr_ktableworkq, pfr_ktable); 765 RB_HEAD(pfr_ktablehead, pfr_ktable); 766 struct pfr_ktable { 767 struct pfr_tstats pfrkt_ts; 768 RB_ENTRY(pfr_ktable) pfrkt_tree; 769 SLIST_ENTRY(pfr_ktable) pfrkt_workq; 770 struct radix_node_head *pfrkt_ip4; 771 struct radix_node_head *pfrkt_ip6; 772 struct pfr_ktable *pfrkt_shadow; 773 struct pfr_ktable *pfrkt_root; 774 struct pf_ruleset *pfrkt_rs; 775 long pfrkt_larg; 776 int pfrkt_nflags; 777 }; 778 #define pfrkt_t pfrkt_ts.pfrts_t 779 #define pfrkt_name pfrkt_t.pfrt_name 780 #define pfrkt_anchor pfrkt_t.pfrt_anchor 781 #define pfrkt_ruleset pfrkt_t.pfrt_ruleset 782 #define pfrkt_flags pfrkt_t.pfrt_flags 783 #define pfrkt_cnt pfrkt_ts.pfrts_cnt 784 #define pfrkt_refcnt pfrkt_ts.pfrts_refcnt 785 #define pfrkt_packets pfrkt_ts.pfrts_packets 786 #define pfrkt_bytes pfrkt_ts.pfrts_bytes 787 #define pfrkt_match pfrkt_ts.pfrts_match 788 #define pfrkt_nomatch pfrkt_ts.pfrts_nomatch 789 #define pfrkt_tzero pfrkt_ts.pfrts_tzero 790 791 RB_HEAD(pf_state_tree_lan_ext, pf_state); 792 RB_PROTOTYPE(pf_state_tree_lan_ext, pf_state, 793 u.s.entry_lan_ext, pf_state_compare_lan_ext); 794 795 RB_HEAD(pf_state_tree_ext_gwy, pf_state); 796 RB_PROTOTYPE(pf_state_tree_ext_gwy, pf_state, 797 u.s.entry_ext_gwy, pf_state_compare_ext_gwy); 798 799 struct pfi_if { 800 char pfif_name[IFNAMSIZ]; 801 u_int64_t pfif_packets[2][2][2]; 802 u_int64_t pfif_bytes[2][2][2]; 803 u_int64_t pfif_addcnt; 804 u_int64_t pfif_delcnt; 805 time_t pfif_tzero; 806 int pfif_states; 807 int pfif_rules; 808 int pfif_flags; 809 }; 810 811 TAILQ_HEAD(pfi_grouphead, pfi_kif); 812 TAILQ_HEAD(pfi_statehead, pfi_kif); 813 RB_HEAD(pfi_ifhead, pfi_kif); 814 struct pfi_kif { 815 struct pfi_if pfik_if; 816 RB_ENTRY(pfi_kif) pfik_tree; 817 struct pf_state_tree_lan_ext pfik_lan_ext; 818 struct pf_state_tree_ext_gwy pfik_ext_gwy; 819 struct pfi_grouphead pfik_grouphead; 820 TAILQ_ENTRY(pfi_kif) pfik_instances; 821 TAILQ_ENTRY(pfi_kif) pfik_w_states; 822 struct hook_desc_head *pfik_ah_head; 823 void *pfik_ah_cookie; 824 struct pfi_kif *pfik_parent; 825 struct ifnet *pfik_ifp; 826 int pfik_states; 827 int pfik_rules; 828 }; 829 #define pfik_name pfik_if.pfif_name 830 #define pfik_packets pfik_if.pfif_packets 831 #define pfik_bytes pfik_if.pfif_bytes 832 #define pfik_tzero pfik_if.pfif_tzero 833 #define pfik_flags pfik_if.pfif_flags 834 #define pfik_addcnt pfik_if.pfif_addcnt 835 #define pfik_delcnt pfik_if.pfif_delcnt 836 #define pfik_states pfik_if.pfif_states 837 #define pfik_rules pfik_if.pfif_rules 838 839 #define PFI_IFLAG_GROUP 0x0001 /* group of interfaces */ 840 #define PFI_IFLAG_INSTANCE 0x0002 /* single instance */ 841 #define PFI_IFLAG_CLONABLE 0x0010 /* clonable group */ 842 #define PFI_IFLAG_DYNAMIC 0x0020 /* dynamic group */ 843 #define PFI_IFLAG_ATTACHED 0x0040 /* interface attached */ 844 845 struct pf_pdesc { 846 u_int64_t tot_len; /* Make Mickey money */ 847 union { 848 struct tcphdr *tcp; 849 struct udphdr *udp; 850 struct icmp *icmp; 851 #ifdef INET6 852 struct icmp6_hdr *icmp6; 853 #endif /* INET6 */ 854 void *any; 855 } hdr; 856 struct pf_addr baddr; /* address before translation */ 857 struct pf_addr naddr; /* address after translation */ 858 struct pf_rule *nat_rule; /* nat/rdr rule applied to packet */ 859 struct pf_addr *src; 860 struct pf_addr *dst; 861 struct ether_header 862 *eh; 863 u_int16_t *ip_sum; 864 u_int32_t p_len; /* total length of payload */ 865 u_int16_t flags; /* Let SCRUB trigger behavior in 866 * state code. Easier than tags */ 867 #define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */ 868 #define PFDESC_IP_REAS 0x0002 /* IP frags would've been reassembled */ 869 sa_family_t af; 870 u_int8_t proto; 871 u_int8_t tos; 872 }; 873 874 /* flags for RDR options */ 875 #define PF_DPORT_RANGE 0x01 /* Dest port uses range */ 876 #define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */ 877 878 /* Reasons code for passing/dropping a packet */ 879 #define PFRES_MATCH 0 /* Explicit match of a rule */ 880 #define PFRES_BADOFF 1 /* Bad offset for pull_hdr */ 881 #define PFRES_FRAG 2 /* Dropping following fragment */ 882 #define PFRES_SHORT 3 /* Dropping short packet */ 883 #define PFRES_NORM 4 /* Dropping by normalizer */ 884 #define PFRES_MEMORY 5 /* Dropped due to lacking mem */ 885 #define PFRES_TS 6 /* Bad TCP Timestamp (RFC1323) */ 886 #define PFRES_MAX 7 /* total+1 */ 887 888 #define PFRES_NAMES { \ 889 "match", \ 890 "bad-offset", \ 891 "fragment", \ 892 "short", \ 893 "normalize", \ 894 "memory", \ 895 "bad-timestamp", \ 896 NULL \ 897 } 898 899 /* UDP state enumeration */ 900 #define PFUDPS_NO_TRAFFIC 0 901 #define PFUDPS_SINGLE 1 902 #define PFUDPS_MULTIPLE 2 903 904 #define PFUDPS_NSTATES 3 /* number of state levels */ 905 906 #define PFUDPS_NAMES { \ 907 "NO_TRAFFIC", \ 908 "SINGLE", \ 909 "MULTIPLE", \ 910 NULL \ 911 } 912 913 /* Other protocol state enumeration */ 914 #define PFOTHERS_NO_TRAFFIC 0 915 #define PFOTHERS_SINGLE 1 916 #define PFOTHERS_MULTIPLE 2 917 918 #define PFOTHERS_NSTATES 3 /* number of state levels */ 919 920 #define PFOTHERS_NAMES { \ 921 "NO_TRAFFIC", \ 922 "SINGLE", \ 923 "MULTIPLE", \ 924 NULL \ 925 } 926 927 #define FCNT_STATE_SEARCH 0 928 #define FCNT_STATE_INSERT 1 929 #define FCNT_STATE_REMOVALS 2 930 #define FCNT_MAX 3 931 932 #define SCNT_SRC_NODE_SEARCH 0 933 #define SCNT_SRC_NODE_INSERT 1 934 #define SCNT_SRC_NODE_REMOVALS 2 935 #define SCNT_MAX 3 936 937 #define ACTION_SET(a, x) \ 938 do { \ 939 if ((a) != NULL) \ 940 *(a) = (x); \ 941 } while (0) 942 943 #define REASON_SET(a, x) \ 944 do { \ 945 if ((a) != NULL) \ 946 *(a) = (x); \ 947 if (x < PFRES_MAX) \ 948 pf_status.counters[x]++; \ 949 } while (0) 950 951 struct pf_status { 952 u_int64_t counters[PFRES_MAX]; 953 u_int64_t fcounters[FCNT_MAX]; 954 u_int64_t scounters[SCNT_MAX]; 955 u_int64_t pcounters[2][2][3]; 956 u_int64_t bcounters[2][2]; 957 u_int64_t stateid; 958 u_int32_t running; 959 u_int32_t states; 960 u_int32_t src_nodes; 961 u_int32_t since; /* XXX time_t vs uint32_t */ 962 u_int32_t debug; 963 u_int32_t hostid; 964 char ifname[IFNAMSIZ]; 965 }; 966 967 struct cbq_opts { 968 u_int minburst; 969 u_int maxburst; 970 u_int pktsize; 971 u_int maxpktsize; 972 u_int ns_per_byte; 973 u_int maxidle; 974 int minidle; 975 u_int offtime; 976 int flags; 977 }; 978 979 struct priq_opts { 980 int flags; 981 }; 982 983 struct hfsc_opts { 984 /* real-time service curve */ 985 u_int rtsc_m1; /* slope of the 1st segment in bps */ 986 u_int rtsc_d; /* the x-projection of m1 in msec */ 987 u_int rtsc_m2; /* slope of the 2nd segment in bps */ 988 /* link-sharing service curve */ 989 u_int lssc_m1; 990 u_int lssc_d; 991 u_int lssc_m2; 992 /* upper-limit service curve */ 993 u_int ulsc_m1; 994 u_int ulsc_d; 995 u_int ulsc_m2; 996 int flags; 997 }; 998 999 struct pf_altq { 1000 char ifname[IFNAMSIZ]; 1001 1002 void *altq_disc; /* discipline-specific state */ 1003 TAILQ_ENTRY(pf_altq) entries; 1004 1005 /* scheduler spec */ 1006 u_int8_t scheduler; /* scheduler type */ 1007 u_int16_t tbrsize; /* tokenbucket regulator size */ 1008 u_int32_t ifbandwidth; /* interface bandwidth */ 1009 1010 /* queue spec */ 1011 char qname[PF_QNAME_SIZE]; /* queue name */ 1012 char parent[PF_QNAME_SIZE]; /* parent name */ 1013 u_int32_t parent_qid; /* parent queue id */ 1014 u_int32_t bandwidth; /* queue bandwidth */ 1015 u_int8_t priority; /* priority */ 1016 u_int16_t qlimit; /* queue size limit */ 1017 u_int16_t flags; /* misc flags */ 1018 union { 1019 struct cbq_opts cbq_opts; 1020 struct priq_opts priq_opts; 1021 struct hfsc_opts hfsc_opts; 1022 } pq_u; 1023 1024 u_int32_t qid; /* return value */ 1025 }; 1026 1027 struct pf_tag { 1028 u_int16_t tag; /* tag id */ 1029 }; 1030 1031 struct pf_tagname { 1032 TAILQ_ENTRY(pf_tagname) entries; 1033 char name[PF_TAG_NAME_SIZE]; 1034 u_int16_t tag; 1035 int ref; 1036 }; 1037 1038 #define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */ 1039 #define PFFRAG_FRAG_HIWAT 1000 /* Number of fragmented packets */ 1040 #define PFFRAG_FRCENT_HIWAT 50000 /* Number of fragment cache entries */ 1041 #define PFFRAG_FRCACHE_HIWAT 10000 /* Number of fragment descriptors */ 1042 1043 /* 1044 * ioctl parameter structures 1045 */ 1046 1047 struct pfioc_pooladdr { 1048 u_int32_t action; 1049 u_int32_t ticket; 1050 u_int32_t nr; 1051 u_int32_t r_num; 1052 u_int8_t r_action; 1053 u_int8_t r_last; 1054 u_int8_t af; 1055 char anchor[PF_ANCHOR_NAME_SIZE]; 1056 char ruleset[PF_RULESET_NAME_SIZE]; 1057 struct pf_pooladdr addr; 1058 }; 1059 1060 struct pfioc_rule { 1061 u_int32_t action; 1062 u_int32_t ticket; 1063 u_int32_t pool_ticket; 1064 u_int32_t nr; 1065 char anchor[PF_ANCHOR_NAME_SIZE]; 1066 char ruleset[PF_RULESET_NAME_SIZE]; 1067 struct pf_rule rule; 1068 }; 1069 1070 struct pfioc_natlook { 1071 struct pf_addr saddr; 1072 struct pf_addr daddr; 1073 struct pf_addr rsaddr; 1074 struct pf_addr rdaddr; 1075 u_int16_t sport; 1076 u_int16_t dport; 1077 u_int16_t rsport; 1078 u_int16_t rdport; 1079 sa_family_t af; 1080 u_int8_t proto; 1081 u_int8_t direction; 1082 }; 1083 1084 struct pfioc_state { 1085 u_int32_t nr; 1086 struct pf_state state; 1087 }; 1088 1089 struct pfioc_state_kill { 1090 /* XXX returns the number of states killed in psk_af */ 1091 sa_family_t psk_af; 1092 int psk_proto; 1093 struct pf_rule_addr psk_src; 1094 struct pf_rule_addr psk_dst; 1095 char psk_ifname[IFNAMSIZ]; 1096 }; 1097 1098 struct pfioc_states { 1099 int ps_len; 1100 union { 1101 caddr_t psu_buf; 1102 struct pf_state *psu_states; 1103 } ps_u; 1104 #define ps_buf ps_u.psu_buf 1105 #define ps_states ps_u.psu_states 1106 }; 1107 1108 struct pfioc_src_nodes { 1109 int psn_len; 1110 union { 1111 caddr_t psu_buf; 1112 struct pf_src_node *psu_src_nodes; 1113 } psn_u; 1114 #define psn_buf psn_u.psu_buf 1115 #define psn_src_nodes psn_u.psu_src_nodes 1116 }; 1117 1118 struct pfioc_if { 1119 char ifname[IFNAMSIZ]; 1120 }; 1121 1122 struct pfioc_tm { 1123 int timeout; 1124 int seconds; 1125 }; 1126 1127 struct pfioc_limit { 1128 int index; 1129 unsigned limit; 1130 }; 1131 1132 struct pfioc_altq { 1133 u_int32_t action; 1134 u_int32_t ticket; 1135 u_int32_t nr; 1136 struct pf_altq altq; 1137 }; 1138 1139 struct pfioc_qstats { 1140 u_int32_t ticket; 1141 u_int32_t nr; 1142 void *buf; 1143 int nbytes; 1144 u_int8_t scheduler; 1145 }; 1146 1147 struct pfioc_anchor { 1148 u_int32_t nr; 1149 char name[PF_ANCHOR_NAME_SIZE]; 1150 }; 1151 1152 struct pfioc_ruleset { 1153 u_int32_t nr; 1154 char anchor[PF_ANCHOR_NAME_SIZE]; 1155 char name[PF_RULESET_NAME_SIZE]; 1156 }; 1157 1158 #define PF_RULESET_ALTQ (PF_RULESET_MAX) 1159 #define PF_RULESET_TABLE (PF_RULESET_MAX+1) 1160 struct pfioc_trans { 1161 int size; /* number of elements */ 1162 int esize; /* size of each element in bytes */ 1163 struct pfioc_trans_e { 1164 int rs_num; 1165 char anchor[PF_ANCHOR_NAME_SIZE]; 1166 char ruleset[PF_RULESET_NAME_SIZE]; 1167 u_int32_t ticket; 1168 } *array; 1169 }; 1170 1171 #define PFR_FLAG_ATOMIC 0x00000001 1172 #define PFR_FLAG_DUMMY 0x00000002 1173 #define PFR_FLAG_FEEDBACK 0x00000004 1174 #define PFR_FLAG_CLSTATS 0x00000008 1175 #define PFR_FLAG_ADDRSTOO 0x00000010 1176 #define PFR_FLAG_REPLACE 0x00000020 1177 #define PFR_FLAG_ALLRSETS 0x00000040 1178 #define PFR_FLAG_ALLMASK 0x0000007F 1179 #ifdef _KERNEL 1180 #define PFR_FLAG_USERIOCTL 0x10000000 1181 #endif 1182 1183 struct pfioc_table { 1184 struct pfr_table pfrio_table; 1185 void *pfrio_buffer; 1186 int pfrio_esize; 1187 int pfrio_size; 1188 int pfrio_size2; 1189 int pfrio_nadd; 1190 int pfrio_ndel; 1191 int pfrio_nchange; 1192 int pfrio_flags; 1193 u_int32_t pfrio_ticket; 1194 }; 1195 #define pfrio_exists pfrio_nadd 1196 #define pfrio_nzero pfrio_nadd 1197 #define pfrio_nmatch pfrio_nadd 1198 #define pfrio_naddr pfrio_size2 1199 #define pfrio_setflag pfrio_size2 1200 #define pfrio_clrflag pfrio_nadd 1201 1202 1203 #define PFI_FLAG_GROUP 0x0001 /* gets groups of interfaces */ 1204 #define PFI_FLAG_INSTANCE 0x0002 /* gets single interfaces */ 1205 #define PFI_FLAG_ALLMASK 0x0003 1206 1207 struct pfioc_iface { 1208 char pfiio_name[IFNAMSIZ]; 1209 void *pfiio_buffer; 1210 int pfiio_esize; 1211 int pfiio_size; 1212 int pfiio_nzero; 1213 int pfiio_flags; 1214 }; 1215 1216 1217 /* 1218 * ioctl operations 1219 */ 1220 1221 #define DIOCSTART _IO ('D', 1) 1222 #define DIOCSTOP _IO ('D', 2) 1223 #define DIOCBEGINRULES _IOWR('D', 3, struct pfioc_rule) 1224 #define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule) 1225 #define DIOCCOMMITRULES _IOWR('D', 5, struct pfioc_rule) 1226 #define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule) 1227 #define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule) 1228 /* XXX cut 8 - 17 */ 1229 #define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill) 1230 #define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state) 1231 #define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if) 1232 #define DIOCGETSTATUS _IOWR('D', 21, struct pf_status) 1233 #define DIOCCLRSTATUS _IO ('D', 22) 1234 #define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook) 1235 #define DIOCSETDEBUG _IOWR('D', 24, u_int32_t) 1236 #define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states) 1237 #define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule) 1238 /* XXX cut 26 - 28 */ 1239 #define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm) 1240 #define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm) 1241 #define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state) 1242 #define DIOCCLRRULECTRS _IO ('D', 38) 1243 #define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit) 1244 #define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit) 1245 #define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill) 1246 #define DIOCSTARTALTQ _IO ('D', 42) 1247 #define DIOCSTOPALTQ _IO ('D', 43) 1248 #define DIOCBEGINALTQS _IOWR('D', 44, u_int32_t) 1249 #define DIOCADDALTQ _IOWR('D', 45, struct pfioc_altq) 1250 #define DIOCCOMMITALTQS _IOWR('D', 46, u_int32_t) 1251 #define DIOCGETALTQS _IOWR('D', 47, struct pfioc_altq) 1252 #define DIOCGETALTQ _IOWR('D', 48, struct pfioc_altq) 1253 #define DIOCCHANGEALTQ _IOWR('D', 49, struct pfioc_altq) 1254 #define DIOCGETQSTATS _IOWR('D', 50, struct pfioc_qstats) 1255 #define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr) 1256 #define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr) 1257 #define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr) 1258 #define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr) 1259 #define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr) 1260 #define DIOCGETANCHORS _IOWR('D', 56, struct pfioc_anchor) 1261 #define DIOCGETANCHOR _IOWR('D', 57, struct pfioc_anchor) 1262 #define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset) 1263 #define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset) 1264 #define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table) 1265 #define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table) 1266 #define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table) 1267 #define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table) 1268 #define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table) 1269 #define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table) 1270 #define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table) 1271 #define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table) 1272 #define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table) 1273 #define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table) 1274 #define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table) 1275 #define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table) 1276 #define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table) 1277 #define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table) 1278 #define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table) 1279 #define DIOCRINABEGIN _IOWR('D', 75, struct pfioc_table) 1280 #define DIOCRINACOMMIT _IOWR('D', 76, struct pfioc_table) 1281 #define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table) 1282 #define DIOCOSFPFLUSH _IO('D', 78) 1283 #define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl) 1284 #define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl) 1285 #define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans) 1286 #define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans) 1287 #define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans) 1288 #define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes) 1289 #define DIOCCLRSRCNODES _IO('D', 85) 1290 #define DIOCSETHOSTID _IOWR('D', 86, u_int32_t) 1291 #define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface) 1292 #define DIOCICLRISTATS _IOWR('D', 88, struct pfioc_iface) 1293 1294 #ifdef _KERNEL 1295 RB_HEAD(pf_src_tree, pf_src_node); 1296 RB_PROTOTYPE(pf_src_tree, pf_src_node, entry, pf_src_compare); 1297 extern struct pf_src_tree tree_src_tracking; 1298 1299 RB_HEAD(pf_state_tree_id, pf_state); 1300 RB_PROTOTYPE(pf_state_tree_id, pf_state, 1301 entry_id, pf_state_compare_id); 1302 extern struct pf_state_tree_id tree_id; 1303 extern struct pf_state_queue state_updates; 1304 1305 extern struct pf_anchorqueue pf_anchors; 1306 extern struct pf_ruleset pf_main_ruleset; 1307 TAILQ_HEAD(pf_poolqueue, pf_pool); 1308 extern struct pf_poolqueue pf_pools[2]; 1309 TAILQ_HEAD(pf_altqqueue, pf_altq); 1310 extern struct pf_altqqueue pf_altqs[2]; 1311 extern struct pf_palist pf_pabuf; 1312 extern struct pfi_kif **pfi_index2kif; 1313 1314 extern u_int32_t ticket_altqs_active; 1315 extern u_int32_t ticket_altqs_inactive; 1316 extern int altqs_inactive_open; 1317 extern u_int32_t ticket_pabuf; 1318 extern struct pf_altqqueue *pf_altqs_active; 1319 extern struct pf_altqqueue *pf_altqs_inactive; 1320 extern struct pf_poolqueue *pf_pools_active; 1321 extern struct pf_poolqueue *pf_pools_inactive; 1322 extern int pf_tbladdr_setup(struct pf_ruleset *, 1323 struct pf_addr_wrap *); 1324 extern void pf_tbladdr_remove(struct pf_addr_wrap *); 1325 extern void pf_tbladdr_copyout(struct pf_addr_wrap *); 1326 extern void pf_calc_skip_steps(struct pf_rulequeue *); 1327 extern struct pool pf_src_tree_pl, pf_rule_pl; 1328 extern struct pool pf_state_pl, pf_altq_pl, pf_pooladdr_pl; 1329 extern struct pool pf_state_scrub_pl; 1330 extern void pf_purge_timeout(void *); 1331 extern void pf_purge_expired_src_nodes(void); 1332 extern void pf_purge_expired_states(void); 1333 extern void pf_purge_expired_state(struct pf_state *); 1334 extern int pf_insert_state(struct pfi_kif *, 1335 struct pf_state *); 1336 extern int pf_insert_src_node(struct pf_src_node **, 1337 struct pf_rule *, struct pf_addr *, 1338 sa_family_t); 1339 void pf_src_tree_remove_state(struct pf_state *); 1340 extern struct pf_state *pf_find_state_byid(struct pf_state *); 1341 extern struct pf_state *pf_find_state_all(struct pf_state *key, 1342 u_int8_t tree, int *more); 1343 extern void pf_print_state(struct pf_state *); 1344 extern void pf_print_flags(u_int8_t); 1345 extern struct pf_anchor *pf_find_anchor(const char *); 1346 extern struct pf_ruleset *pf_find_ruleset(char *, char *); 1347 extern struct pf_ruleset *pf_find_or_create_ruleset( 1348 char[PF_ANCHOR_NAME_SIZE], 1349 char[PF_RULESET_NAME_SIZE]); 1350 extern void pf_remove_if_empty_ruleset( 1351 struct pf_ruleset *); 1352 extern u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t, 1353 u_int8_t); 1354 1355 extern struct ifnet *sync_ifp; 1356 extern struct pf_rule pf_default_rule; 1357 extern void pf_addrcpy(struct pf_addr *, struct pf_addr *, 1358 u_int8_t); 1359 void pf_rm_rule(struct pf_rulequeue *, 1360 struct pf_rule *); 1361 1362 #ifdef INET 1363 int pf_test(int, struct ifnet *, struct mbuf **); 1364 int pf_test_eh(int, struct ifnet *, struct mbuf **, struct ether_header *); 1365 #endif /* INET */ 1366 1367 #ifdef INET6 1368 int pf_test6(int, struct ifnet *, struct mbuf **); 1369 int pf_test6_eh(int, struct ifnet *, struct mbuf **, struct ether_header *); 1370 void pf_poolmask(struct pf_addr *, struct pf_addr*, 1371 struct pf_addr *, struct pf_addr *, u_int8_t); 1372 void pf_addr_inc(struct pf_addr *, sa_family_t); 1373 #endif /* INET6 */ 1374 1375 void *pf_pull_hdr(struct mbuf *, int, void *, int, u_short *, u_short *, 1376 sa_family_t); 1377 void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t); 1378 int pflog_packet(struct pfi_kif *, struct mbuf *, sa_family_t, u_int8_t, 1379 u_int8_t, struct pf_rule *, struct pf_rule *, struct pf_ruleset *); 1380 int pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *, 1381 struct pf_addr *, sa_family_t); 1382 int pf_match(u_int8_t, u_int32_t, u_int32_t, u_int32_t); 1383 int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t); 1384 int pf_match_uid(u_int8_t, uid_t, uid_t, uid_t); 1385 int pf_match_gid(u_int8_t, gid_t, gid_t, gid_t); 1386 1387 void pf_normalize_init(void); 1388 int pf_normalize_ip(struct mbuf **, int, struct pfi_kif *, u_short *, 1389 struct pf_pdesc *); 1390 int pf_normalize_ip6(struct mbuf **, int, struct pfi_kif *, u_short *, 1391 struct pf_pdesc *); 1392 int pf_normalize_tcp(int, struct pfi_kif *, struct mbuf *, int, int, void *, 1393 struct pf_pdesc *); 1394 void pf_normalize_tcp_cleanup(struct pf_state *); 1395 int pf_normalize_tcp_init(struct mbuf *, int, struct pf_pdesc *, 1396 struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *); 1397 int pf_normalize_tcp_stateful(struct mbuf *, int, struct pf_pdesc *, 1398 u_short *, struct tcphdr *, struct pf_state *, 1399 struct pf_state_peer *, struct pf_state_peer *, int *); 1400 u_int32_t 1401 pf_state_expires(const struct pf_state *); 1402 void pf_purge_expired_fragments(void); 1403 int pf_routable(struct pf_addr *addr, sa_family_t af); 1404 void pfr_initialize(void); 1405 int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t); 1406 void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t, 1407 u_int64_t, int, int, int); 1408 int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, 1409 struct pf_addr **, struct pf_addr **, sa_family_t); 1410 void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *); 1411 struct pfr_ktable * 1412 pfr_attach_table(struct pf_ruleset *, char *); 1413 void pfr_detach_table(struct pfr_ktable *); 1414 int pfr_clr_tables(struct pfr_table *, int *, int); 1415 int pfr_add_tables(struct pfr_table *, int, int *, int); 1416 int pfr_del_tables(struct pfr_table *, int, int *, int); 1417 int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int); 1418 int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int); 1419 int pfr_clr_tstats(struct pfr_table *, int, int *, int); 1420 int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int); 1421 int pfr_clr_addrs(struct pfr_table *, int *, int); 1422 int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1423 int); 1424 int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1425 int); 1426 int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1427 int *, int *, int *, int); 1428 int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int); 1429 int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int); 1430 int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *, 1431 int); 1432 int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1433 int); 1434 int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int); 1435 int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int); 1436 int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int); 1437 int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *, 1438 int *, u_int32_t, int); 1439 1440 void pfi_initialize(void); 1441 void pfi_attach_clone(struct if_clone *); 1442 void pfi_attach_ifnet(struct ifnet *); 1443 void pfi_detach_ifnet(struct ifnet *); 1444 struct pfi_kif *pfi_lookup_create(const char *); 1445 struct pfi_kif *pfi_lookup_if(const char *); 1446 int pfi_maybe_destroy(struct pfi_kif *); 1447 struct pfi_kif *pfi_attach_rule(const char *); 1448 void pfi_detach_rule(struct pfi_kif *); 1449 void pfi_attach_state(struct pfi_kif *); 1450 void pfi_detach_state(struct pfi_kif *); 1451 void pfi_fill_oldstatus(struct pf_status *); 1452 int pfi_clr_istats(const char *, int *, int); 1453 int pfi_get_ifaces(const char *, struct pfi_if *, int *, int); 1454 int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *, 1455 sa_family_t); 1456 1457 extern struct pfi_statehead pfi_statehead; 1458 1459 u_int16_t pf_tagname2tag(char *); 1460 void pf_tag2tagname(u_int16_t, char *); 1461 void pf_tag_unref(u_int16_t); 1462 int pf_tag_packet(struct mbuf *, struct pf_tag *, int); 1463 u_int32_t pf_qname2qid(char *); 1464 void pf_qid2qname(u_int32_t, char *); 1465 void pf_qid_unref(u_int32_t); 1466 1467 extern struct pf_status pf_status; 1468 extern struct pool pf_frent_pl, pf_frag_pl; 1469 1470 struct pf_pool_limit { 1471 void *pp; 1472 unsigned limit; 1473 }; 1474 extern struct pf_pool_limit pf_pool_limits[PF_LIMIT_MAX]; 1475 1476 #endif /* _KERNEL */ 1477 1478 /* The fingerprint functions can be linked into userland programs (tcpdump) */ 1479 int pf_osfp_add(struct pf_osfp_ioctl *); 1480 #ifdef _KERNEL 1481 struct pf_osfp_enlist * 1482 pf_osfp_fingerprint(struct pf_pdesc *, struct mbuf *, int, 1483 const struct tcphdr *); 1484 #endif /* _KERNEL */ 1485 struct pf_osfp_enlist * 1486 pf_osfp_fingerprint_hdr(const struct ip *, const struct tcphdr *); 1487 void pf_osfp_flush(void); 1488 int pf_osfp_get(struct pf_osfp_ioctl *); 1489 void pf_osfp_initialize(void); 1490 int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t); 1491 struct pf_os_fingerprint * 1492 pf_osfp_validate(void); 1493 1494 1495 #endif /* _NET_PFVAR_H_ */ 1496