pfvar.h revision 1.1.1.2
1 /* $OpenBSD: pfvar.h,v 1.202 2004/07/12 00:50:22 itojun Exp $ */ 2 3 /* 4 * Copyright (c) 2001 Daniel Hartmeier 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * - Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * - Redistributions in binary form must reproduce the above 14 * copyright notice, this list of conditions and the following 15 * disclaimer in the documentation and/or other materials provided 16 * with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 21 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 22 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 24 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 25 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 26 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 28 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 * 31 */ 32 33 #ifndef _NET_PFVAR_H_ 34 #define _NET_PFVAR_H_ 35 36 #include <sys/param.h> 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 * Note about PFTM_*: real indices into pf_rule.timeout[] come before 64 * PFTM_MAX, special cases afterwards. See pf_state_expires(). 65 */ 66 enum { PFTM_TCP_FIRST_PACKET, PFTM_TCP_OPENING, PFTM_TCP_ESTABLISHED, 67 PFTM_TCP_CLOSING, PFTM_TCP_FIN_WAIT, PFTM_TCP_CLOSED, 68 PFTM_UDP_FIRST_PACKET, PFTM_UDP_SINGLE, PFTM_UDP_MULTIPLE, 69 PFTM_ICMP_FIRST_PACKET, PFTM_ICMP_ERROR_REPLY, 70 PFTM_OTHER_FIRST_PACKET, PFTM_OTHER_SINGLE, 71 PFTM_OTHER_MULTIPLE, PFTM_FRAG, PFTM_INTERVAL, 72 PFTM_ADAPTIVE_START, PFTM_ADAPTIVE_END, PFTM_SRC_NODE, 73 PFTM_TS_DIFF, PFTM_MAX, PFTM_PURGE, PFTM_UNTIL_PACKET }; 74 enum { PF_NOPFROUTE, PF_FASTROUTE, PF_ROUTETO, PF_DUPTO, PF_REPLYTO }; 75 enum { PF_LIMIT_STATES, PF_LIMIT_SRC_NODES, PF_LIMIT_FRAGS, PF_LIMIT_MAX }; 76 #define PF_POOL_IDMASK 0x0f 77 enum { PF_POOL_NONE, PF_POOL_BITMASK, PF_POOL_RANDOM, 78 PF_POOL_SRCHASH, PF_POOL_ROUNDROBIN }; 79 enum { PF_ADDR_ADDRMASK, PF_ADDR_NOROUTE, PF_ADDR_DYNIFTL, 80 PF_ADDR_TABLE }; 81 #define PF_POOL_TYPEMASK 0x0f 82 #define PF_POOL_STICKYADDR 0x20 83 #define PF_WSCALE_FLAG 0x80 84 #define PF_WSCALE_MASK 0x0f 85 86 struct pf_addr { 87 union { 88 struct in_addr v4; 89 struct in6_addr v6; 90 u_int8_t addr8[16]; 91 u_int16_t addr16[8]; 92 u_int32_t addr32[4]; 93 } pfa; /* 128-bit address */ 94 #define v4 pfa.v4 95 #define v6 pfa.v6 96 #define addr8 pfa.addr8 97 #define addr16 pfa.addr16 98 #define addr32 pfa.addr32 99 }; 100 101 #define PF_TABLE_NAME_SIZE 32 102 103 #define PFI_AFLAG_NETWORK 0x01 104 #define PFI_AFLAG_BROADCAST 0x02 105 #define PFI_AFLAG_PEER 0x04 106 #define PFI_AFLAG_MODEMASK 0x07 107 #define PFI_AFLAG_NOALIAS 0x08 108 109 struct pf_addr_wrap { 110 union { 111 struct { 112 struct pf_addr addr; 113 struct pf_addr mask; 114 } a; 115 char ifname[IFNAMSIZ]; 116 char tblname[PF_TABLE_NAME_SIZE]; 117 } v; 118 union { 119 struct pfi_dynaddr *dyn; 120 struct pfr_ktable *tbl; 121 int dyncnt; 122 int tblcnt; 123 } p; 124 u_int8_t type; /* PF_ADDR_* */ 125 u_int8_t iflags; /* PFI_AFLAG_* */ 126 }; 127 128 #ifdef _KERNEL 129 130 struct pfi_dynaddr { 131 struct pf_addr pfid_addr4; 132 struct pf_addr pfid_mask4; 133 struct pf_addr pfid_addr6; 134 struct pf_addr pfid_mask6; 135 struct pfr_ktable *pfid_kt; 136 struct pfi_kif *pfid_kif; 137 void *pfid_hook_cookie; 138 int pfid_net; /* optional mask, or 128 */ 139 int pfid_acnt4; /* address count, IPv4 */ 140 int pfid_acnt6; /* address count, IPv6 */ 141 sa_family_t pfid_af; /* rule address family */ 142 u_int8_t pfid_iflags; /* PFI_AFLAG_* */ 143 }; 144 145 /* 146 * Address manipulation macros 147 */ 148 149 #ifdef INET 150 #ifndef INET6 151 #define PF_INET_ONLY 152 #endif /* ! INET6 */ 153 #endif /* INET */ 154 155 #ifdef INET6 156 #ifndef INET 157 #define PF_INET6_ONLY 158 #endif /* ! INET */ 159 #endif /* INET6 */ 160 161 #ifdef INET 162 #ifdef INET6 163 #define PF_INET_INET6 164 #endif /* INET6 */ 165 #endif /* INET */ 166 167 #else 168 169 #define PF_INET_INET6 170 171 #endif /* _KERNEL */ 172 173 /* Both IPv4 and IPv6 */ 174 #ifdef PF_INET_INET6 175 176 #define PF_AEQ(a, b, c) \ 177 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \ 178 ((a)->addr32[3] == (b)->addr32[3] && \ 179 (a)->addr32[2] == (b)->addr32[2] && \ 180 (a)->addr32[1] == (b)->addr32[1] && \ 181 (a)->addr32[0] == (b)->addr32[0])) \ 182 183 #define PF_ANEQ(a, b, c) \ 184 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \ 185 ((a)->addr32[3] != (b)->addr32[3] || \ 186 (a)->addr32[2] != (b)->addr32[2] || \ 187 (a)->addr32[1] != (b)->addr32[1] || \ 188 (a)->addr32[0] != (b)->addr32[0])) \ 189 190 #define PF_AZERO(a, c) \ 191 ((c == AF_INET && !(a)->addr32[0]) || \ 192 (!(a)->addr32[0] && !(a)->addr32[1] && \ 193 !(a)->addr32[2] && !(a)->addr32[3] )) \ 194 195 #define PF_MATCHA(n, a, m, b, f) \ 196 pf_match_addr(n, a, m, b, f) 197 198 #define PF_ACPY(a, b, f) \ 199 pf_addrcpy(a, b, f) 200 201 #define PF_AINC(a, f) \ 202 pf_addr_inc(a, f) 203 204 #define PF_POOLMASK(a, b, c, d, f) \ 205 pf_poolmask(a, b, c, d, f) 206 207 #else 208 209 /* Just IPv6 */ 210 211 #ifdef PF_INET6_ONLY 212 213 #define PF_AEQ(a, b, c) \ 214 ((a)->addr32[3] == (b)->addr32[3] && \ 215 (a)->addr32[2] == (b)->addr32[2] && \ 216 (a)->addr32[1] == (b)->addr32[1] && \ 217 (a)->addr32[0] == (b)->addr32[0]) \ 218 219 #define PF_ANEQ(a, b, c) \ 220 ((a)->addr32[3] != (b)->addr32[3] || \ 221 (a)->addr32[2] != (b)->addr32[2] || \ 222 (a)->addr32[1] != (b)->addr32[1] || \ 223 (a)->addr32[0] != (b)->addr32[0]) \ 224 225 #define PF_AZERO(a, c) \ 226 (!(a)->addr32[0] && \ 227 !(a)->addr32[1] && \ 228 !(a)->addr32[2] && \ 229 !(a)->addr32[3] ) \ 230 231 #define PF_MATCHA(n, a, m, b, f) \ 232 pf_match_addr(n, a, m, b, f) 233 234 #define PF_ACPY(a, b, f) \ 235 pf_addrcpy(a, b, f) 236 237 #define PF_AINC(a, f) \ 238 pf_addr_inc(a, f) 239 240 #define PF_POOLMASK(a, b, c, d, f) \ 241 pf_poolmask(a, b, c, d, f) 242 243 #else 244 245 /* Just IPv4 */ 246 #ifdef PF_INET_ONLY 247 248 #define PF_AEQ(a, b, c) \ 249 ((a)->addr32[0] == (b)->addr32[0]) 250 251 #define PF_ANEQ(a, b, c) \ 252 ((a)->addr32[0] != (b)->addr32[0]) 253 254 #define PF_AZERO(a, c) \ 255 (!(a)->addr32[0]) 256 257 #define PF_MATCHA(n, a, m, b, f) \ 258 pf_match_addr(n, a, m, b, f) 259 260 #define PF_ACPY(a, b, f) \ 261 (a)->v4.s_addr = (b)->v4.s_addr 262 263 #define PF_AINC(a, f) \ 264 do { \ 265 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \ 266 } while (0) 267 268 #define PF_POOLMASK(a, b, c, d, f) \ 269 do { \ 270 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \ 271 (((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \ 272 } while (0) 273 274 #endif /* PF_INET_ONLY */ 275 #endif /* PF_INET6_ONLY */ 276 #endif /* PF_INET_INET6 */ 277 278 #define PF_MISMATCHAW(aw, x, af, neg) \ 279 ( \ 280 (((aw)->type == PF_ADDR_NOROUTE && \ 281 pf_routable((x), (af))) || \ 282 ((aw)->type == PF_ADDR_TABLE && \ 283 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \ 284 ((aw)->type == PF_ADDR_DYNIFTL && \ 285 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \ 286 ((aw)->type == PF_ADDR_ADDRMASK && \ 287 !PF_AZERO(&(aw)->v.a.mask, (af)) && \ 288 !PF_MATCHA(0, &(aw)->v.a.addr, \ 289 &(aw)->v.a.mask, (x), (af)))) != \ 290 (neg) \ 291 ) 292 293 struct pf_rule_uid { 294 uid_t uid[2]; 295 u_int8_t op; 296 }; 297 298 struct pf_rule_gid { 299 uid_t gid[2]; 300 u_int8_t op; 301 }; 302 303 struct pf_rule_addr { 304 struct pf_addr_wrap addr; 305 u_int16_t port[2]; 306 u_int8_t neg; 307 u_int8_t port_op; 308 }; 309 310 struct pf_pooladdr { 311 struct pf_addr_wrap addr; 312 TAILQ_ENTRY(pf_pooladdr) entries; 313 char ifname[IFNAMSIZ]; 314 struct pfi_kif *kif; 315 }; 316 317 TAILQ_HEAD(pf_palist, pf_pooladdr); 318 319 struct pf_poolhashkey { 320 union { 321 u_int8_t key8[16]; 322 u_int16_t key16[8]; 323 u_int32_t key32[4]; 324 } pfk; /* 128-bit hash key */ 325 #define key8 pfk.key8 326 #define key16 pfk.key16 327 #define key32 pfk.key32 328 }; 329 330 struct pf_pool { 331 struct pf_palist list; 332 struct pf_pooladdr *cur; 333 struct pf_poolhashkey key; 334 struct pf_addr counter; 335 int tblidx; 336 u_int16_t proxy_port[2]; 337 u_int8_t port_op; 338 u_int8_t opts; 339 }; 340 341 342 /* A packed Operating System description for fingerprinting */ 343 typedef u_int32_t pf_osfp_t; 344 #define PF_OSFP_ANY ((pf_osfp_t)0) 345 #define PF_OSFP_UNKNOWN ((pf_osfp_t)-1) 346 #define PF_OSFP_NOMATCH ((pf_osfp_t)-2) 347 348 struct pf_osfp_entry { 349 SLIST_ENTRY(pf_osfp_entry) fp_entry; 350 pf_osfp_t fp_os; 351 int fp_enflags; 352 #define PF_OSFP_EXPANDED 0x001 /* expanded entry */ 353 #define PF_OSFP_GENERIC 0x002 /* generic signature */ 354 #define PF_OSFP_NODETAIL 0x004 /* no p0f details */ 355 #define PF_OSFP_LEN 32 356 char fp_class_nm[PF_OSFP_LEN]; 357 char fp_version_nm[PF_OSFP_LEN]; 358 char fp_subtype_nm[PF_OSFP_LEN]; 359 }; 360 #define PF_OSFP_ENTRY_EQ(a, b) \ 361 ((a)->fp_os == (b)->fp_os && \ 362 memcmp((a)->fp_class_nm, (b)->fp_class_nm, PF_OSFP_LEN) == 0 && \ 363 memcmp((a)->fp_version_nm, (b)->fp_version_nm, PF_OSFP_LEN) == 0 && \ 364 memcmp((a)->fp_subtype_nm, (b)->fp_subtype_nm, PF_OSFP_LEN) == 0) 365 366 /* handle pf_osfp_t packing */ 367 #define _FP_RESERVED_BIT 1 /* For the special negative #defines */ 368 #define _FP_UNUSED_BITS 1 369 #define _FP_CLASS_BITS 10 /* OS Class (Windows, Linux) */ 370 #define _FP_VERSION_BITS 10 /* OS version (95, 98, NT, 2.4.54, 3.2) */ 371 #define _FP_SUBTYPE_BITS 10 /* patch level (NT SP4, SP3, ECN patch) */ 372 #define PF_OSFP_UNPACK(osfp, class, version, subtype) do { \ 373 (class) = ((osfp) >> (_FP_VERSION_BITS+_FP_SUBTYPE_BITS)) & \ 374 ((1 << _FP_CLASS_BITS) - 1); \ 375 (version) = ((osfp) >> _FP_SUBTYPE_BITS) & \ 376 ((1 << _FP_VERSION_BITS) - 1);\ 377 (subtype) = (osfp) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 378 } while(0) 379 #define PF_OSFP_PACK(osfp, class, version, subtype) do { \ 380 (osfp) = ((class) & ((1 << _FP_CLASS_BITS) - 1)) << (_FP_VERSION_BITS \ 381 + _FP_SUBTYPE_BITS); \ 382 (osfp) |= ((version) & ((1 << _FP_VERSION_BITS) - 1)) << \ 383 _FP_SUBTYPE_BITS; \ 384 (osfp) |= (subtype) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 385 } while(0) 386 387 /* the fingerprint of an OSes TCP SYN packet */ 388 typedef u_int64_t pf_tcpopts_t; 389 struct pf_os_fingerprint { 390 SLIST_HEAD(pf_osfp_enlist, pf_osfp_entry) fp_oses; /* list of matches */ 391 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 392 u_int16_t fp_wsize; /* TCP window size */ 393 u_int16_t fp_psize; /* ip->ip_len */ 394 u_int16_t fp_mss; /* TCP MSS */ 395 u_int16_t fp_flags; 396 #define PF_OSFP_WSIZE_MOD 0x0001 /* Window modulus */ 397 #define PF_OSFP_WSIZE_DC 0x0002 /* Window don't care */ 398 #define PF_OSFP_WSIZE_MSS 0x0004 /* Window multiple of MSS */ 399 #define PF_OSFP_WSIZE_MTU 0x0008 /* Window multiple of MTU */ 400 #define PF_OSFP_PSIZE_MOD 0x0010 /* packet size modulus */ 401 #define PF_OSFP_PSIZE_DC 0x0020 /* packet size don't care */ 402 #define PF_OSFP_WSCALE 0x0040 /* TCP window scaling */ 403 #define PF_OSFP_WSCALE_MOD 0x0080 /* TCP window scale modulus */ 404 #define PF_OSFP_WSCALE_DC 0x0100 /* TCP window scale dont-care */ 405 #define PF_OSFP_MSS 0x0200 /* TCP MSS */ 406 #define PF_OSFP_MSS_MOD 0x0400 /* TCP MSS modulus */ 407 #define PF_OSFP_MSS_DC 0x0800 /* TCP MSS dont-care */ 408 #define PF_OSFP_DF 0x1000 /* IPv4 don't fragment bit */ 409 #define PF_OSFP_TS0 0x2000 /* Zero timestamp */ 410 u_int8_t fp_optcnt; /* TCP option count */ 411 u_int8_t fp_wscale; /* TCP window scaling */ 412 u_int8_t fp_ttl; /* IPv4 TTL */ 413 #define PF_OSFP_MAXTTL_OFFSET 40 414 /* TCP options packing */ 415 #define PF_OSFP_TCPOPT_NOP 0x0 /* TCP NOP option */ 416 #define PF_OSFP_TCPOPT_WSCALE 0x1 /* TCP window scaling option */ 417 #define PF_OSFP_TCPOPT_MSS 0x2 /* TCP max segment size opt */ 418 #define PF_OSFP_TCPOPT_SACK 0x3 /* TCP SACK OK option */ 419 #define PF_OSFP_TCPOPT_TS 0x4 /* TCP timestamp option */ 420 #define PF_OSFP_TCPOPT_BITS 3 /* bits used by each option */ 421 #define PF_OSFP_MAX_OPTS \ 422 (sizeof(((struct pf_os_fingerprint *)0)->fp_tcpopts) * 8) \ 423 / PF_OSFP_TCPOPT_BITS 424 425 SLIST_ENTRY(pf_os_fingerprint) fp_next; 426 }; 427 428 struct pf_osfp_ioctl { 429 struct pf_osfp_entry fp_os; 430 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 431 u_int16_t fp_wsize; /* TCP window size */ 432 u_int16_t fp_psize; /* ip->ip_len */ 433 u_int16_t fp_mss; /* TCP MSS */ 434 u_int16_t fp_flags; 435 u_int8_t fp_optcnt; /* TCP option count */ 436 u_int8_t fp_wscale; /* TCP window scaling */ 437 u_int8_t fp_ttl; /* IPv4 TTL */ 438 439 int fp_getnum; /* DIOCOSFPGET number */ 440 }; 441 442 443 union pf_rule_ptr { 444 struct pf_rule *ptr; 445 u_int32_t nr; 446 }; 447 448 #define PF_ANCHOR_NAME_SIZE 64 449 450 struct pf_rule { 451 struct pf_rule_addr src; 452 struct pf_rule_addr dst; 453 #define PF_SKIP_IFP 0 454 #define PF_SKIP_DIR 1 455 #define PF_SKIP_AF 2 456 #define PF_SKIP_PROTO 3 457 #define PF_SKIP_SRC_ADDR 4 458 #define PF_SKIP_SRC_PORT 5 459 #define PF_SKIP_DST_ADDR 6 460 #define PF_SKIP_DST_PORT 7 461 #define PF_SKIP_COUNT 8 462 union pf_rule_ptr skip[PF_SKIP_COUNT]; 463 #define PF_RULE_LABEL_SIZE 64 464 char label[PF_RULE_LABEL_SIZE]; 465 #define PF_QNAME_SIZE 16 466 char ifname[IFNAMSIZ]; 467 char qname[PF_QNAME_SIZE]; 468 char pqname[PF_QNAME_SIZE]; 469 #define PF_TAG_NAME_SIZE 16 470 char tagname[PF_TAG_NAME_SIZE]; 471 char match_tagname[PF_TAG_NAME_SIZE]; 472 473 TAILQ_ENTRY(pf_rule) entries; 474 struct pf_pool rpool; 475 476 u_int64_t evaluations; 477 u_int64_t packets; 478 u_int64_t bytes; 479 480 struct pfi_kif *kif; 481 struct pf_anchor *anchor; 482 483 pf_osfp_t os_fingerprint; 484 485 u_int32_t timeout[PFTM_MAX]; 486 u_int32_t states; 487 u_int32_t max_states; 488 u_int32_t src_nodes; 489 u_int32_t max_src_nodes; 490 u_int32_t max_src_states; 491 u_int32_t qid; 492 u_int32_t pqid; 493 u_int32_t rt_listid; 494 u_int32_t nr; 495 u_int32_t prob; 496 497 u_int16_t return_icmp; 498 u_int16_t return_icmp6; 499 u_int16_t max_mss; 500 u_int16_t tag; 501 u_int16_t match_tag; 502 503 struct pf_rule_uid uid; 504 struct pf_rule_gid gid; 505 506 u_int32_t rule_flag; 507 u_int8_t action; 508 u_int8_t direction; 509 u_int8_t log; 510 u_int8_t quick; 511 u_int8_t ifnot; 512 u_int8_t match_tag_not; 513 u_int8_t natpass; 514 515 #define PF_STATE_NORMAL 0x1 516 #define PF_STATE_MODULATE 0x2 517 #define PF_STATE_SYNPROXY 0x3 518 u_int8_t keep_state; 519 sa_family_t af; 520 u_int8_t proto; 521 u_int8_t type; 522 u_int8_t code; 523 u_int8_t flags; 524 u_int8_t flagset; 525 u_int8_t min_ttl; 526 u_int8_t allow_opts; 527 u_int8_t rt; 528 u_int8_t return_ttl; 529 u_int8_t tos; 530 u_int8_t anchor_relative; 531 u_int8_t anchor_wildcard; 532 }; 533 534 /* rule flags */ 535 #define PFRULE_DROP 0x0000 536 #define PFRULE_RETURNRST 0x0001 537 #define PFRULE_FRAGMENT 0x0002 538 #define PFRULE_RETURNICMP 0x0004 539 #define PFRULE_RETURN 0x0008 540 #define PFRULE_NOSYNC 0x0010 541 #define PFRULE_SRCTRACK 0x0020 /* track source states */ 542 #define PFRULE_RULESRCTRACK 0x0040 /* per rule */ 543 544 /* scrub flags */ 545 #define PFRULE_NODF 0x0100 546 #define PFRULE_FRAGCROP 0x0200 /* non-buffering frag cache */ 547 #define PFRULE_FRAGDROP 0x0400 /* drop funny fragments */ 548 #define PFRULE_RANDOMID 0x0800 549 #define PFRULE_REASSEMBLE_TCP 0x1000 550 551 /* rule flags again */ 552 #define PFRULE_IFBOUND 0x00010000 /* if-bound */ 553 #define PFRULE_GRBOUND 0x00020000 /* group-bound */ 554 555 #define PFSTATE_HIWAT 10000 /* default state table size */ 556 557 struct pf_src_node { 558 RB_ENTRY(pf_src_node) entry; 559 struct pf_addr addr; 560 struct pf_addr raddr; 561 union pf_rule_ptr rule; 562 struct pfi_kif *kif; 563 u_int32_t bytes; 564 u_int32_t packets; 565 u_int32_t states; 566 u_int32_t creation; 567 u_int32_t expire; 568 sa_family_t af; 569 u_int8_t ruletype; 570 }; 571 572 #define PFSNODE_HIWAT 10000 /* default source node table size */ 573 574 struct pf_state_scrub { 575 struct timeval pfss_last; /* time received last packet */ 576 u_int32_t pfss_tsecr; /* last echoed timestamp */ 577 u_int32_t pfss_tsval; /* largest timestamp */ 578 u_int32_t pfss_tsval0; /* original timestamp */ 579 u_int16_t pfss_flags; 580 #define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */ 581 #define PFSS_PAWS 0x0010 /* stricter PAWS checks */ 582 #define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */ 583 #define PFSS_DATA_TS 0x0040 /* timestamp on data packets */ 584 #define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */ 585 u_int8_t pfss_ttl; /* stashed TTL */ 586 u_int8_t pad; 587 u_int32_t pfss_ts_mod; /* timestamp modulation */ 588 }; 589 590 struct pf_state_host { 591 struct pf_addr addr; 592 u_int16_t port; 593 u_int16_t pad; 594 }; 595 596 struct pf_state_peer { 597 u_int32_t seqlo; /* Max sequence number sent */ 598 u_int32_t seqhi; /* Max the other end ACKd + win */ 599 u_int32_t seqdiff; /* Sequence number modulator */ 600 u_int16_t max_win; /* largest window (pre scaling) */ 601 u_int8_t state; /* active state level */ 602 u_int8_t wscale; /* window scaling factor */ 603 u_int16_t mss; /* Maximum segment size option */ 604 struct pf_state_scrub *scrub; /* state is scrubbed */ 605 }; 606 607 TAILQ_HEAD(pf_state_queue, pf_state); 608 609 struct pf_state { 610 u_int64_t id; 611 union { 612 struct { 613 RB_ENTRY(pf_state) entry_lan_ext; 614 RB_ENTRY(pf_state) entry_ext_gwy; 615 RB_ENTRY(pf_state) entry_id; 616 TAILQ_ENTRY(pf_state) entry_updates; 617 struct pfi_kif *kif; 618 } s; 619 char ifname[IFNAMSIZ]; 620 } u; 621 struct pf_state_host lan; 622 struct pf_state_host gwy; 623 struct pf_state_host ext; 624 struct pf_state_peer src; 625 struct pf_state_peer dst; 626 union pf_rule_ptr rule; 627 union pf_rule_ptr anchor; 628 union pf_rule_ptr nat_rule; 629 struct pf_addr rt_addr; 630 struct pfi_kif *rt_kif; 631 struct pf_src_node *src_node; 632 struct pf_src_node *nat_src_node; 633 u_int32_t creation; 634 u_int32_t expire; 635 u_int32_t pfsync_time; 636 u_int32_t packets[2]; 637 u_int32_t bytes[2]; 638 u_int32_t creatorid; 639 sa_family_t af; 640 u_int8_t proto; 641 u_int8_t direction; 642 u_int8_t log; 643 u_int8_t allow_opts; 644 u_int8_t timeout; 645 u_int8_t sync_flags; 646 #define PFSTATE_NOSYNC 0x01 647 #define PFSTATE_FROMSYNC 0x02 648 u_int8_t pad; 649 }; 650 651 TAILQ_HEAD(pf_rulequeue, pf_rule); 652 653 struct pf_anchor; 654 655 struct pf_ruleset { 656 struct { 657 struct pf_rulequeue queues[2]; 658 struct { 659 struct pf_rulequeue *ptr; 660 u_int32_t ticket; 661 int open; 662 } active, inactive; 663 } rules[PF_RULESET_MAX]; 664 struct pf_anchor *anchor; 665 u_int32_t tticket; 666 int tables; 667 int topen; 668 }; 669 670 RB_HEAD(pf_anchor_global, pf_anchor); 671 RB_HEAD(pf_anchor_node, pf_anchor); 672 struct pf_anchor { 673 RB_ENTRY(pf_anchor) entry_global; 674 RB_ENTRY(pf_anchor) entry_node; 675 struct pf_anchor *parent; 676 struct pf_anchor_node children; 677 char name[PF_ANCHOR_NAME_SIZE]; 678 char path[MAXPATHLEN]; 679 struct pf_ruleset ruleset; 680 int refcnt; /* anchor rules */ 681 }; 682 RB_PROTOTYPE(pf_anchor_global, pf_anchor, entry_global, pf_anchor_compare); 683 RB_PROTOTYPE(pf_anchor_node, pf_anchor, entry_node, pf_anchor_compare); 684 685 #define PF_RESERVED_ANCHOR "_pf" 686 687 #define PFR_TFLAG_PERSIST 0x00000001 688 #define PFR_TFLAG_CONST 0x00000002 689 #define PFR_TFLAG_ACTIVE 0x00000004 690 #define PFR_TFLAG_INACTIVE 0x00000008 691 #define PFR_TFLAG_REFERENCED 0x00000010 692 #define PFR_TFLAG_REFDANCHOR 0x00000020 693 #define PFR_TFLAG_USRMASK 0x00000003 694 #define PFR_TFLAG_SETMASK 0x0000003C 695 #define PFR_TFLAG_ALLMASK 0x0000003F 696 697 struct pfr_table { 698 char pfrt_anchor[MAXPATHLEN]; 699 char pfrt_name[PF_TABLE_NAME_SIZE]; 700 u_int32_t pfrt_flags; 701 u_int8_t pfrt_fback; 702 }; 703 704 enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED, 705 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE, 706 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_MAX }; 707 708 struct pfr_addr { 709 union { 710 struct in_addr _pfra_ip4addr; 711 struct in6_addr _pfra_ip6addr; 712 } pfra_u; 713 u_int8_t pfra_af; 714 u_int8_t pfra_net; 715 u_int8_t pfra_not; 716 u_int8_t pfra_fback; 717 }; 718 #define pfra_ip4addr pfra_u._pfra_ip4addr 719 #define pfra_ip6addr pfra_u._pfra_ip6addr 720 721 enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX }; 722 enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX }; 723 #define PFR_OP_XPASS PFR_OP_ADDR_MAX 724 725 struct pfr_astats { 726 struct pfr_addr pfras_a; 727 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 728 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 729 long pfras_tzero; 730 }; 731 732 enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX }; 733 734 struct pfr_tstats { 735 struct pfr_table pfrts_t; 736 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 737 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 738 u_int64_t pfrts_match; 739 u_int64_t pfrts_nomatch; 740 long pfrts_tzero; 741 int pfrts_cnt; 742 int pfrts_refcnt[PFR_REFCNT_MAX]; 743 }; 744 #define pfrts_name pfrts_t.pfrt_name 745 #define pfrts_flags pfrts_t.pfrt_flags 746 747 SLIST_HEAD(pfr_kentryworkq, pfr_kentry); 748 struct pfr_kentry { 749 struct radix_node pfrke_node[2]; 750 union sockaddr_union pfrke_sa; 751 u_int64_t pfrke_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 752 u_int64_t pfrke_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 753 SLIST_ENTRY(pfr_kentry) pfrke_workq; 754 long pfrke_tzero; 755 u_int8_t pfrke_af; 756 u_int8_t pfrke_net; 757 u_int8_t pfrke_not; 758 u_int8_t pfrke_mark; 759 }; 760 761 SLIST_HEAD(pfr_ktableworkq, pfr_ktable); 762 RB_HEAD(pfr_ktablehead, pfr_ktable); 763 struct pfr_ktable { 764 struct pfr_tstats pfrkt_ts; 765 RB_ENTRY(pfr_ktable) pfrkt_tree; 766 SLIST_ENTRY(pfr_ktable) pfrkt_workq; 767 struct radix_node_head *pfrkt_ip4; 768 struct radix_node_head *pfrkt_ip6; 769 struct pfr_ktable *pfrkt_shadow; 770 struct pfr_ktable *pfrkt_root; 771 struct pf_ruleset *pfrkt_rs; 772 long pfrkt_larg; 773 int pfrkt_nflags; 774 }; 775 #define pfrkt_t pfrkt_ts.pfrts_t 776 #define pfrkt_name pfrkt_t.pfrt_name 777 #define pfrkt_anchor pfrkt_t.pfrt_anchor 778 #define pfrkt_ruleset pfrkt_t.pfrt_ruleset 779 #define pfrkt_flags pfrkt_t.pfrt_flags 780 #define pfrkt_cnt pfrkt_ts.pfrts_cnt 781 #define pfrkt_refcnt pfrkt_ts.pfrts_refcnt 782 #define pfrkt_packets pfrkt_ts.pfrts_packets 783 #define pfrkt_bytes pfrkt_ts.pfrts_bytes 784 #define pfrkt_match pfrkt_ts.pfrts_match 785 #define pfrkt_nomatch pfrkt_ts.pfrts_nomatch 786 #define pfrkt_tzero pfrkt_ts.pfrts_tzero 787 788 RB_HEAD(pf_state_tree_lan_ext, pf_state); 789 RB_PROTOTYPE(pf_state_tree_lan_ext, pf_state, 790 u.s.entry_lan_ext, pf_state_compare_lan_ext); 791 792 RB_HEAD(pf_state_tree_ext_gwy, pf_state); 793 RB_PROTOTYPE(pf_state_tree_ext_gwy, pf_state, 794 u.s.entry_ext_gwy, pf_state_compare_ext_gwy); 795 796 struct pfi_if { 797 char pfif_name[IFNAMSIZ]; 798 u_int64_t pfif_packets[2][2][2]; 799 u_int64_t pfif_bytes[2][2][2]; 800 u_int64_t pfif_addcnt; 801 u_int64_t pfif_delcnt; 802 long pfif_tzero; 803 int pfif_states; 804 int pfif_rules; 805 int pfif_flags; 806 }; 807 808 TAILQ_HEAD(pfi_grouphead, pfi_kif); 809 TAILQ_HEAD(pfi_statehead, pfi_kif); 810 RB_HEAD(pfi_ifhead, pfi_kif); 811 struct pfi_kif { 812 struct pfi_if pfik_if; 813 RB_ENTRY(pfi_kif) pfik_tree; 814 struct pf_state_tree_lan_ext pfik_lan_ext; 815 struct pf_state_tree_ext_gwy pfik_ext_gwy; 816 struct pfi_grouphead pfik_grouphead; 817 TAILQ_ENTRY(pfi_kif) pfik_instances; 818 TAILQ_ENTRY(pfi_kif) pfik_w_states; 819 struct hook_desc_head *pfik_ah_head; 820 void *pfik_ah_cookie; 821 struct pfi_kif *pfik_parent; 822 struct ifnet *pfik_ifp; 823 int pfik_states; 824 int pfik_rules; 825 }; 826 #define pfik_name pfik_if.pfif_name 827 #define pfik_packets pfik_if.pfif_packets 828 #define pfik_bytes pfik_if.pfif_bytes 829 #define pfik_tzero pfik_if.pfif_tzero 830 #define pfik_flags pfik_if.pfif_flags 831 #define pfik_addcnt pfik_if.pfif_addcnt 832 #define pfik_delcnt pfik_if.pfif_delcnt 833 #define pfik_states pfik_if.pfif_states 834 #define pfik_rules pfik_if.pfif_rules 835 836 #define PFI_IFLAG_GROUP 0x0001 /* group of interfaces */ 837 #define PFI_IFLAG_INSTANCE 0x0002 /* single instance */ 838 #define PFI_IFLAG_CLONABLE 0x0010 /* clonable group */ 839 #define PFI_IFLAG_DYNAMIC 0x0020 /* dynamic group */ 840 #define PFI_IFLAG_ATTACHED 0x0040 /* interface attached */ 841 842 struct pf_pdesc { 843 u_int64_t tot_len; /* Make Mickey money */ 844 union { 845 struct tcphdr *tcp; 846 struct udphdr *udp; 847 struct icmp *icmp; 848 #ifdef INET6 849 struct icmp6_hdr *icmp6; 850 #endif /* INET6 */ 851 void *any; 852 } hdr; 853 struct pf_addr baddr; /* address before translation */ 854 struct pf_addr naddr; /* address after translation */ 855 struct pf_rule *nat_rule; /* nat/rdr rule applied to packet */ 856 struct pf_addr *src; 857 struct pf_addr *dst; 858 struct ether_header 859 *eh; 860 u_int16_t *ip_sum; 861 u_int32_t p_len; /* total length of payload */ 862 u_int16_t flags; /* Let SCRUB trigger behavior in 863 * state code. Easier than tags */ 864 #define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */ 865 #define PFDESC_IP_REAS 0x0002 /* IP frags would've been reassembled */ 866 sa_family_t af; 867 u_int8_t proto; 868 u_int8_t tos; 869 }; 870 871 /* flags for RDR options */ 872 #define PF_DPORT_RANGE 0x01 /* Dest port uses range */ 873 #define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */ 874 875 /* Reasons code for passing/dropping a packet */ 876 #define PFRES_MATCH 0 /* Explicit match of a rule */ 877 #define PFRES_BADOFF 1 /* Bad offset for pull_hdr */ 878 #define PFRES_FRAG 2 /* Dropping following fragment */ 879 #define PFRES_SHORT 3 /* Dropping short packet */ 880 #define PFRES_NORM 4 /* Dropping by normalizer */ 881 #define PFRES_MEMORY 5 /* Dropped due to lacking mem */ 882 #define PFRES_TS 6 /* Bad TCP Timestamp (RFC1323) */ 883 #define PFRES_MAX 7 /* total+1 */ 884 885 #define PFRES_NAMES { \ 886 "match", \ 887 "bad-offset", \ 888 "fragment", \ 889 "short", \ 890 "normalize", \ 891 "memory", \ 892 "bad-timestamp", \ 893 NULL \ 894 } 895 896 /* UDP state enumeration */ 897 #define PFUDPS_NO_TRAFFIC 0 898 #define PFUDPS_SINGLE 1 899 #define PFUDPS_MULTIPLE 2 900 901 #define PFUDPS_NSTATES 3 /* number of state levels */ 902 903 #define PFUDPS_NAMES { \ 904 "NO_TRAFFIC", \ 905 "SINGLE", \ 906 "MULTIPLE", \ 907 NULL \ 908 } 909 910 /* Other protocol state enumeration */ 911 #define PFOTHERS_NO_TRAFFIC 0 912 #define PFOTHERS_SINGLE 1 913 #define PFOTHERS_MULTIPLE 2 914 915 #define PFOTHERS_NSTATES 3 /* number of state levels */ 916 917 #define PFOTHERS_NAMES { \ 918 "NO_TRAFFIC", \ 919 "SINGLE", \ 920 "MULTIPLE", \ 921 NULL \ 922 } 923 924 #define FCNT_STATE_SEARCH 0 925 #define FCNT_STATE_INSERT 1 926 #define FCNT_STATE_REMOVALS 2 927 #define FCNT_MAX 3 928 929 #define SCNT_SRC_NODE_SEARCH 0 930 #define SCNT_SRC_NODE_INSERT 1 931 #define SCNT_SRC_NODE_REMOVALS 2 932 #define SCNT_MAX 3 933 934 #define ACTION_SET(a, x) \ 935 do { \ 936 if ((a) != NULL) \ 937 *(a) = (x); \ 938 } while (0) 939 940 #define REASON_SET(a, x) \ 941 do { \ 942 if ((a) != NULL) \ 943 *(a) = (x); \ 944 if (x < PFRES_MAX) \ 945 pf_status.counters[x]++; \ 946 } while (0) 947 948 struct pf_status { 949 u_int64_t counters[PFRES_MAX]; 950 u_int64_t fcounters[FCNT_MAX]; 951 u_int64_t scounters[SCNT_MAX]; 952 u_int64_t pcounters[2][2][3]; 953 u_int64_t bcounters[2][2]; 954 u_int64_t stateid; 955 u_int32_t running; 956 u_int32_t states; 957 u_int32_t src_nodes; 958 u_int32_t since; 959 u_int32_t debug; 960 u_int32_t hostid; 961 char ifname[IFNAMSIZ]; 962 }; 963 964 struct cbq_opts { 965 u_int minburst; 966 u_int maxburst; 967 u_int pktsize; 968 u_int maxpktsize; 969 u_int ns_per_byte; 970 u_int maxidle; 971 int minidle; 972 u_int offtime; 973 int flags; 974 }; 975 976 struct priq_opts { 977 int flags; 978 }; 979 980 struct hfsc_opts { 981 /* real-time service curve */ 982 u_int rtsc_m1; /* slope of the 1st segment in bps */ 983 u_int rtsc_d; /* the x-projection of m1 in msec */ 984 u_int rtsc_m2; /* slope of the 2nd segment in bps */ 985 /* link-sharing service curve */ 986 u_int lssc_m1; 987 u_int lssc_d; 988 u_int lssc_m2; 989 /* upper-limit service curve */ 990 u_int ulsc_m1; 991 u_int ulsc_d; 992 u_int ulsc_m2; 993 int flags; 994 }; 995 996 struct pf_altq { 997 char ifname[IFNAMSIZ]; 998 999 void *altq_disc; /* discipline-specific state */ 1000 TAILQ_ENTRY(pf_altq) entries; 1001 1002 /* scheduler spec */ 1003 u_int8_t scheduler; /* scheduler type */ 1004 u_int16_t tbrsize; /* tokenbucket regulator size */ 1005 u_int32_t ifbandwidth; /* interface bandwidth */ 1006 1007 /* queue spec */ 1008 char qname[PF_QNAME_SIZE]; /* queue name */ 1009 char parent[PF_QNAME_SIZE]; /* parent name */ 1010 u_int32_t parent_qid; /* parent queue id */ 1011 u_int32_t bandwidth; /* queue bandwidth */ 1012 u_int8_t priority; /* priority */ 1013 u_int16_t qlimit; /* queue size limit */ 1014 u_int16_t flags; /* misc flags */ 1015 union { 1016 struct cbq_opts cbq_opts; 1017 struct priq_opts priq_opts; 1018 struct hfsc_opts hfsc_opts; 1019 } pq_u; 1020 1021 u_int32_t qid; /* return value */ 1022 }; 1023 1024 struct pf_tag { 1025 u_int16_t tag; /* tag id */ 1026 }; 1027 1028 struct pf_tagname { 1029 TAILQ_ENTRY(pf_tagname) entries; 1030 char name[PF_TAG_NAME_SIZE]; 1031 u_int16_t tag; 1032 int ref; 1033 }; 1034 1035 #define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */ 1036 #define PFFRAG_FRAG_HIWAT 1000 /* Number of fragmented packets */ 1037 #define PFFRAG_FRCENT_HIWAT 50000 /* Number of fragment cache entries */ 1038 #define PFFRAG_FRCACHE_HIWAT 10000 /* Number of fragment descriptors */ 1039 1040 /* 1041 * ioctl parameter structures 1042 */ 1043 1044 struct pfioc_pooladdr { 1045 u_int32_t action; 1046 u_int32_t ticket; 1047 u_int32_t nr; 1048 u_int32_t r_num; 1049 u_int8_t r_action; 1050 u_int8_t r_last; 1051 u_int8_t af; 1052 char anchor[MAXPATHLEN]; 1053 struct pf_pooladdr addr; 1054 }; 1055 1056 struct pfioc_rule { 1057 u_int32_t action; 1058 u_int32_t ticket; 1059 u_int32_t pool_ticket; 1060 u_int32_t nr; 1061 char anchor[MAXPATHLEN]; 1062 char anchor_call[MAXPATHLEN]; 1063 struct pf_rule rule; 1064 }; 1065 1066 struct pfioc_natlook { 1067 struct pf_addr saddr; 1068 struct pf_addr daddr; 1069 struct pf_addr rsaddr; 1070 struct pf_addr rdaddr; 1071 u_int16_t sport; 1072 u_int16_t dport; 1073 u_int16_t rsport; 1074 u_int16_t rdport; 1075 sa_family_t af; 1076 u_int8_t proto; 1077 u_int8_t direction; 1078 }; 1079 1080 struct pfioc_state { 1081 u_int32_t nr; 1082 struct pf_state state; 1083 }; 1084 1085 struct pfioc_state_kill { 1086 /* XXX returns the number of states killed in psk_af */ 1087 sa_family_t psk_af; 1088 int psk_proto; 1089 struct pf_rule_addr psk_src; 1090 struct pf_rule_addr psk_dst; 1091 char psk_ifname[IFNAMSIZ]; 1092 }; 1093 1094 struct pfioc_states { 1095 int ps_len; 1096 union { 1097 caddr_t psu_buf; 1098 struct pf_state *psu_states; 1099 } ps_u; 1100 #define ps_buf ps_u.psu_buf 1101 #define ps_states ps_u.psu_states 1102 }; 1103 1104 struct pfioc_src_nodes { 1105 int psn_len; 1106 union { 1107 caddr_t psu_buf; 1108 struct pf_src_node *psu_src_nodes; 1109 } psn_u; 1110 #define psn_buf psn_u.psu_buf 1111 #define psn_src_nodes psn_u.psu_src_nodes 1112 }; 1113 1114 struct pfioc_if { 1115 char ifname[IFNAMSIZ]; 1116 }; 1117 1118 struct pfioc_tm { 1119 int timeout; 1120 int seconds; 1121 }; 1122 1123 struct pfioc_limit { 1124 int index; 1125 unsigned limit; 1126 }; 1127 1128 struct pfioc_altq { 1129 u_int32_t action; 1130 u_int32_t ticket; 1131 u_int32_t nr; 1132 struct pf_altq altq; 1133 }; 1134 1135 struct pfioc_qstats { 1136 u_int32_t ticket; 1137 u_int32_t nr; 1138 void *buf; 1139 int nbytes; 1140 u_int8_t scheduler; 1141 }; 1142 1143 struct pfioc_ruleset { 1144 u_int32_t nr; 1145 char path[MAXPATHLEN]; 1146 char name[PF_ANCHOR_NAME_SIZE]; 1147 }; 1148 1149 #define PF_RULESET_ALTQ (PF_RULESET_MAX) 1150 #define PF_RULESET_TABLE (PF_RULESET_MAX+1) 1151 struct pfioc_trans { 1152 int size; /* number of elements */ 1153 int esize; /* size of each element in bytes */ 1154 struct pfioc_trans_e { 1155 int rs_num; 1156 char anchor[MAXPATHLEN]; 1157 u_int32_t ticket; 1158 } *array; 1159 }; 1160 1161 #define PFR_FLAG_ATOMIC 0x00000001 1162 #define PFR_FLAG_DUMMY 0x00000002 1163 #define PFR_FLAG_FEEDBACK 0x00000004 1164 #define PFR_FLAG_CLSTATS 0x00000008 1165 #define PFR_FLAG_ADDRSTOO 0x00000010 1166 #define PFR_FLAG_REPLACE 0x00000020 1167 #define PFR_FLAG_ALLRSETS 0x00000040 1168 #define PFR_FLAG_ALLMASK 0x0000007F 1169 #ifdef _KERNEL 1170 #define PFR_FLAG_USERIOCTL 0x10000000 1171 #endif 1172 1173 struct pfioc_table { 1174 struct pfr_table pfrio_table; 1175 void *pfrio_buffer; 1176 int pfrio_esize; 1177 int pfrio_size; 1178 int pfrio_size2; 1179 int pfrio_nadd; 1180 int pfrio_ndel; 1181 int pfrio_nchange; 1182 int pfrio_flags; 1183 u_int32_t pfrio_ticket; 1184 }; 1185 #define pfrio_exists pfrio_nadd 1186 #define pfrio_nzero pfrio_nadd 1187 #define pfrio_nmatch pfrio_nadd 1188 #define pfrio_naddr pfrio_size2 1189 #define pfrio_setflag pfrio_size2 1190 #define pfrio_clrflag pfrio_nadd 1191 1192 1193 #define PFI_FLAG_GROUP 0x0001 /* gets groups of interfaces */ 1194 #define PFI_FLAG_INSTANCE 0x0002 /* gets single interfaces */ 1195 #define PFI_FLAG_ALLMASK 0x0003 1196 1197 struct pfioc_iface { 1198 char pfiio_name[IFNAMSIZ]; 1199 void *pfiio_buffer; 1200 int pfiio_esize; 1201 int pfiio_size; 1202 int pfiio_nzero; 1203 int pfiio_flags; 1204 }; 1205 1206 1207 /* 1208 * ioctl operations 1209 */ 1210 1211 #define DIOCSTART _IO ('D', 1) 1212 #define DIOCSTOP _IO ('D', 2) 1213 #define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule) 1214 #define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule) 1215 #define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule) 1216 /* XXX cut 8 - 17 */ 1217 #define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill) 1218 #define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state) 1219 #define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if) 1220 #define DIOCGETSTATUS _IOWR('D', 21, struct pf_status) 1221 #define DIOCCLRSTATUS _IO ('D', 22) 1222 #define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook) 1223 #define DIOCSETDEBUG _IOWR('D', 24, u_int32_t) 1224 #define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states) 1225 #define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule) 1226 /* XXX cut 26 - 28 */ 1227 #define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm) 1228 #define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm) 1229 #define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state) 1230 #define DIOCCLRRULECTRS _IO ('D', 38) 1231 #define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit) 1232 #define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit) 1233 #define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill) 1234 #define DIOCSTARTALTQ _IO ('D', 42) 1235 #define DIOCSTOPALTQ _IO ('D', 43) 1236 #define DIOCADDALTQ _IOWR('D', 45, struct pfioc_altq) 1237 #define DIOCGETALTQS _IOWR('D', 47, struct pfioc_altq) 1238 #define DIOCGETALTQ _IOWR('D', 48, struct pfioc_altq) 1239 #define DIOCCHANGEALTQ _IOWR('D', 49, struct pfioc_altq) 1240 #define DIOCGETQSTATS _IOWR('D', 50, struct pfioc_qstats) 1241 #define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr) 1242 #define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr) 1243 #define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr) 1244 #define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr) 1245 #define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr) 1246 /* XXX cut 55 - 57 */ 1247 #define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset) 1248 #define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset) 1249 #define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table) 1250 #define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table) 1251 #define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table) 1252 #define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table) 1253 #define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table) 1254 #define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table) 1255 #define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table) 1256 #define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table) 1257 #define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table) 1258 #define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table) 1259 #define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table) 1260 #define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table) 1261 #define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table) 1262 #define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table) 1263 #define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table) 1264 #define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table) 1265 #define DIOCOSFPFLUSH _IO('D', 78) 1266 #define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl) 1267 #define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl) 1268 #define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans) 1269 #define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans) 1270 #define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans) 1271 #define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes) 1272 #define DIOCCLRSRCNODES _IO('D', 85) 1273 #define DIOCSETHOSTID _IOWR('D', 86, u_int32_t) 1274 #define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface) 1275 #define DIOCICLRISTATS _IOWR('D', 88, struct pfioc_iface) 1276 1277 #ifdef _KERNEL 1278 RB_HEAD(pf_src_tree, pf_src_node); 1279 RB_PROTOTYPE(pf_src_tree, pf_src_node, entry, pf_src_compare); 1280 extern struct pf_src_tree tree_src_tracking; 1281 1282 RB_HEAD(pf_state_tree_id, pf_state); 1283 RB_PROTOTYPE(pf_state_tree_id, pf_state, 1284 entry_id, pf_state_compare_id); 1285 extern struct pf_state_tree_id tree_id; 1286 extern struct pf_state_queue state_updates; 1287 1288 extern struct pf_anchor_global pf_anchors; 1289 extern struct pf_ruleset pf_main_ruleset; 1290 TAILQ_HEAD(pf_poolqueue, pf_pool); 1291 extern struct pf_poolqueue pf_pools[2]; 1292 TAILQ_HEAD(pf_altqqueue, pf_altq); 1293 extern struct pf_altqqueue pf_altqs[2]; 1294 extern struct pf_palist pf_pabuf; 1295 extern struct pfi_kif **pfi_index2kif; 1296 1297 extern u_int32_t ticket_altqs_active; 1298 extern u_int32_t ticket_altqs_inactive; 1299 extern int altqs_inactive_open; 1300 extern u_int32_t ticket_pabuf; 1301 extern struct pf_altqqueue *pf_altqs_active; 1302 extern struct pf_altqqueue *pf_altqs_inactive; 1303 extern struct pf_poolqueue *pf_pools_active; 1304 extern struct pf_poolqueue *pf_pools_inactive; 1305 extern int pf_tbladdr_setup(struct pf_ruleset *, 1306 struct pf_addr_wrap *); 1307 extern void pf_tbladdr_remove(struct pf_addr_wrap *); 1308 extern void pf_tbladdr_copyout(struct pf_addr_wrap *); 1309 extern void pf_calc_skip_steps(struct pf_rulequeue *); 1310 extern struct pool pf_src_tree_pl, pf_rule_pl; 1311 extern struct pool pf_state_pl, pf_altq_pl, pf_pooladdr_pl; 1312 extern struct pool pf_state_scrub_pl; 1313 extern void pf_purge_timeout(void *); 1314 extern void pf_purge_expired_src_nodes(void); 1315 extern void pf_purge_expired_states(void); 1316 extern void pf_purge_expired_state(struct pf_state *); 1317 extern int pf_insert_state(struct pfi_kif *, 1318 struct pf_state *); 1319 extern int pf_insert_src_node(struct pf_src_node **, 1320 struct pf_rule *, struct pf_addr *, 1321 sa_family_t); 1322 void pf_src_tree_remove_state(struct pf_state *); 1323 extern struct pf_state *pf_find_state_byid(struct pf_state *); 1324 extern struct pf_state *pf_find_state_all(struct pf_state *key, 1325 u_int8_t tree, int *more); 1326 extern void pf_print_state(struct pf_state *); 1327 extern void pf_print_flags(u_int8_t); 1328 extern struct pf_anchor *pf_find_anchor(const char *); 1329 extern struct pf_ruleset *pf_find_ruleset(const char *); 1330 extern struct pf_ruleset *pf_find_or_create_ruleset(const char *); 1331 extern void pf_remove_if_empty_ruleset( 1332 struct pf_ruleset *); 1333 extern u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t, 1334 u_int8_t); 1335 1336 extern struct ifnet *sync_ifp; 1337 extern struct pf_rule pf_default_rule; 1338 extern void pf_addrcpy(struct pf_addr *, struct pf_addr *, 1339 u_int8_t); 1340 void pf_rm_rule(struct pf_rulequeue *, 1341 struct pf_rule *); 1342 1343 #ifdef INET 1344 int pf_test(int, struct ifnet *, struct mbuf **, struct ether_header *); 1345 #endif /* INET */ 1346 1347 #ifdef INET6 1348 int pf_test6(int, struct ifnet *, struct mbuf **, struct ether_header *); 1349 void pf_poolmask(struct pf_addr *, struct pf_addr*, 1350 struct pf_addr *, struct pf_addr *, u_int8_t); 1351 void pf_addr_inc(struct pf_addr *, sa_family_t); 1352 #endif /* INET6 */ 1353 1354 void *pf_pull_hdr(struct mbuf *, int, void *, int, u_short *, u_short *, 1355 sa_family_t); 1356 void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t); 1357 int pflog_packet(struct pfi_kif *, struct mbuf *, sa_family_t, u_int8_t, 1358 u_int8_t, struct pf_rule *, struct pf_rule *, struct pf_ruleset *); 1359 int pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *, 1360 struct pf_addr *, sa_family_t); 1361 int pf_match(u_int8_t, u_int32_t, u_int32_t, u_int32_t); 1362 int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t); 1363 int pf_match_uid(u_int8_t, uid_t, uid_t, uid_t); 1364 int pf_match_gid(u_int8_t, gid_t, gid_t, gid_t); 1365 1366 void pf_normalize_init(void); 1367 int pf_normalize_ip(struct mbuf **, int, struct pfi_kif *, u_short *, 1368 struct pf_pdesc *); 1369 int pf_normalize_ip6(struct mbuf **, int, struct pfi_kif *, u_short *, 1370 struct pf_pdesc *); 1371 int pf_normalize_tcp(int, struct pfi_kif *, struct mbuf *, int, int, void *, 1372 struct pf_pdesc *); 1373 void pf_normalize_tcp_cleanup(struct pf_state *); 1374 int pf_normalize_tcp_init(struct mbuf *, int, struct pf_pdesc *, 1375 struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *); 1376 int pf_normalize_tcp_stateful(struct mbuf *, int, struct pf_pdesc *, 1377 u_short *, struct tcphdr *, struct pf_state *, 1378 struct pf_state_peer *, struct pf_state_peer *, int *); 1379 u_int32_t 1380 pf_state_expires(const struct pf_state *); 1381 void pf_purge_expired_fragments(void); 1382 int pf_routable(struct pf_addr *addr, sa_family_t af); 1383 void pfr_initialize(void); 1384 int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t); 1385 void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t, 1386 u_int64_t, int, int, int); 1387 int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, 1388 struct pf_addr **, struct pf_addr **, sa_family_t); 1389 void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *); 1390 struct pfr_ktable * 1391 pfr_attach_table(struct pf_ruleset *, char *); 1392 void pfr_detach_table(struct pfr_ktable *); 1393 int pfr_clr_tables(struct pfr_table *, int *, int); 1394 int pfr_add_tables(struct pfr_table *, int, int *, int); 1395 int pfr_del_tables(struct pfr_table *, int, int *, int); 1396 int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int); 1397 int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int); 1398 int pfr_clr_tstats(struct pfr_table *, int, int *, int); 1399 int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int); 1400 int pfr_clr_addrs(struct pfr_table *, int *, int); 1401 int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1402 int); 1403 int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1404 int); 1405 int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1406 int *, int *, int *, int); 1407 int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int); 1408 int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int); 1409 int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *, 1410 int); 1411 int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1412 int); 1413 int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int); 1414 int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int); 1415 int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int); 1416 int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *, 1417 int *, u_int32_t, int); 1418 1419 void pfi_initialize(void); 1420 void pfi_attach_clone(struct if_clone *); 1421 void pfi_attach_ifnet(struct ifnet *); 1422 void pfi_detach_ifnet(struct ifnet *); 1423 struct pfi_kif *pfi_lookup_create(const char *); 1424 struct pfi_kif *pfi_lookup_if(const char *); 1425 int pfi_maybe_destroy(struct pfi_kif *); 1426 struct pfi_kif *pfi_attach_rule(const char *); 1427 void pfi_detach_rule(struct pfi_kif *); 1428 void pfi_attach_state(struct pfi_kif *); 1429 void pfi_detach_state(struct pfi_kif *); 1430 int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t); 1431 void pfi_dynaddr_copyout(struct pf_addr_wrap *); 1432 void pfi_dynaddr_remove(struct pf_addr_wrap *); 1433 void pfi_fill_oldstatus(struct pf_status *); 1434 int pfi_clr_istats(const char *, int *, int); 1435 int pfi_get_ifaces(const char *, struct pfi_if *, int *, int); 1436 int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *, 1437 sa_family_t); 1438 1439 extern struct pfi_statehead pfi_statehead; 1440 1441 u_int16_t pf_tagname2tag(char *); 1442 void pf_tag2tagname(u_int16_t, char *); 1443 void pf_tag_unref(u_int16_t); 1444 int pf_tag_packet(struct mbuf *, struct pf_tag *, int); 1445 u_int32_t pf_qname2qid(char *); 1446 void pf_qid2qname(u_int32_t, char *); 1447 void pf_qid_unref(u_int32_t); 1448 1449 extern struct pf_status pf_status; 1450 extern struct pool pf_frent_pl, pf_frag_pl; 1451 1452 struct pf_pool_limit { 1453 void *pp; 1454 unsigned limit; 1455 }; 1456 extern struct pf_pool_limit pf_pool_limits[PF_LIMIT_MAX]; 1457 1458 #endif /* _KERNEL */ 1459 1460 /* The fingerprint functions can be linked into userland programs (tcpdump) */ 1461 int pf_osfp_add(struct pf_osfp_ioctl *); 1462 #ifdef _KERNEL 1463 struct pf_osfp_enlist * 1464 pf_osfp_fingerprint(struct pf_pdesc *, struct mbuf *, int, 1465 const struct tcphdr *); 1466 #endif /* _KERNEL */ 1467 struct pf_osfp_enlist * 1468 pf_osfp_fingerprint_hdr(const struct ip *, const struct tcphdr *); 1469 void pf_osfp_flush(void); 1470 int pf_osfp_get(struct pf_osfp_ioctl *); 1471 void pf_osfp_initialize(void); 1472 int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t); 1473 struct pf_os_fingerprint * 1474 pf_osfp_validate(void); 1475 1476 1477 #endif /* _NET_PFVAR_H_ */ 1478
Indexes created Thu Oct 16 14:10:15 GMT 2025