pfvar.h revision 1.1
1 /* $OpenBSD: pfvar.h,v 1.187 2004/03/22 04:54:18 mcbride 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/types.h> 37 #include <sys/queue.h> 38 #include <sys/tree.h> 39 40 #include <net/radix.h> 41 #include <netinet/ip_ipsp.h> 42 #include <netinet/tcp_fsm.h> 43 44 struct ip; 45 46 #define PF_TCPS_PROXY_SRC ((TCP_NSTATES)+0) 47 #define PF_TCPS_PROXY_DST ((TCP_NSTATES)+1) 48 49 enum { PF_INOUT, PF_IN, PF_OUT }; 50 enum { PF_LAN_EXT, PF_EXT_GWY, PF_ID }; 51 enum { PF_PASS, PF_DROP, PF_SCRUB, PF_NAT, PF_NONAT, 52 PF_BINAT, PF_NOBINAT, PF_RDR, PF_NORDR, PF_SYNPROXY_DROP }; 53 enum { PF_RULESET_SCRUB, PF_RULESET_FILTER, PF_RULESET_NAT, 54 PF_RULESET_BINAT, PF_RULESET_RDR, PF_RULESET_MAX }; 55 enum { PF_OP_NONE, PF_OP_IRG, PF_OP_EQ, PF_OP_NE, PF_OP_LT, 56 PF_OP_LE, PF_OP_GT, PF_OP_GE, PF_OP_XRG, PF_OP_RRG }; 57 enum { PF_DEBUG_NONE, PF_DEBUG_URGENT, PF_DEBUG_MISC, PF_DEBUG_NOISY }; 58 enum { PF_CHANGE_NONE, PF_CHANGE_ADD_HEAD, PF_CHANGE_ADD_TAIL, 59 PF_CHANGE_ADD_BEFORE, PF_CHANGE_ADD_AFTER, 60 PF_CHANGE_REMOVE, PF_CHANGE_GET_TICKET }; 61 /* 62 * Note about PFTM_*: real indices into pf_rule.timeout[] come before 63 * PFTM_MAX, special cases afterwards. See pf_state_expires(). 64 */ 65 enum { PFTM_TCP_FIRST_PACKET, PFTM_TCP_OPENING, PFTM_TCP_ESTABLISHED, 66 PFTM_TCP_CLOSING, PFTM_TCP_FIN_WAIT, PFTM_TCP_CLOSED, 67 PFTM_UDP_FIRST_PACKET, PFTM_UDP_SINGLE, PFTM_UDP_MULTIPLE, 68 PFTM_ICMP_FIRST_PACKET, PFTM_ICMP_ERROR_REPLY, 69 PFTM_OTHER_FIRST_PACKET, PFTM_OTHER_SINGLE, 70 PFTM_OTHER_MULTIPLE, PFTM_FRAG, PFTM_INTERVAL, 71 PFTM_ADAPTIVE_START, PFTM_ADAPTIVE_END, PFTM_SRC_NODE, 72 PFTM_MAX, PFTM_PURGE, PFTM_UNTIL_PACKET }; 73 enum { PF_NOPFROUTE, PF_FASTROUTE, PF_ROUTETO, PF_DUPTO, PF_REPLYTO }; 74 enum { PF_LIMIT_STATES, PF_LIMIT_SRC_NODES, PF_LIMIT_FRAGS, PF_LIMIT_MAX }; 75 #define PF_POOL_IDMASK 0x0f 76 enum { PF_POOL_NONE, PF_POOL_BITMASK, PF_POOL_RANDOM, 77 PF_POOL_SRCHASH, PF_POOL_ROUNDROBIN }; 78 enum { PF_ADDR_ADDRMASK, PF_ADDR_NOROUTE, PF_ADDR_DYNIFTL, 79 PF_ADDR_TABLE }; 80 #define PF_POOL_TYPEMASK 0x0f 81 #define PF_POOL_STICKYADDR 0x20 82 #define PF_WSCALE_FLAG 0x80 83 #define PF_WSCALE_MASK 0x0f 84 85 struct pf_addr { 86 union { 87 struct in_addr v4; 88 struct in6_addr v6; 89 u_int8_t addr8[16]; 90 u_int16_t addr16[8]; 91 u_int32_t addr32[4]; 92 } pfa; /* 128-bit address */ 93 #define v4 pfa.v4 94 #define v6 pfa.v6 95 #define addr8 pfa.addr8 96 #define addr16 pfa.addr16 97 #define addr32 pfa.addr32 98 }; 99 100 #define PF_TABLE_NAME_SIZE 32 101 102 #define PFI_AFLAG_NETWORK 0x01 103 #define PFI_AFLAG_BROADCAST 0x02 104 #define PFI_AFLAG_PEER 0x04 105 #define PFI_AFLAG_MODEMASK 0x07 106 #define PFI_AFLAG_NOALIAS 0x08 107 108 struct pf_addr_wrap { 109 union { 110 struct { 111 struct pf_addr addr; 112 struct pf_addr mask; 113 } a; 114 char ifname[IFNAMSIZ]; 115 char tblname[PF_TABLE_NAME_SIZE]; 116 } v; 117 union { 118 struct pfi_dynaddr *dyn; 119 struct pfr_ktable *tbl; 120 int dyncnt; 121 int tblcnt; 122 } p; 123 u_int8_t type; /* PF_ADDR_* */ 124 u_int8_t iflags; /* PFI_AFLAG_* */ 125 }; 126 127 #ifdef _KERNEL 128 129 struct pfi_dynaddr { 130 struct pf_addr pfid_addr4; 131 struct pf_addr pfid_mask4; 132 struct pf_addr pfid_addr6; 133 struct pf_addr pfid_mask6; 134 struct pfr_ktable *pfid_kt; 135 struct pfi_kif *pfid_kif; 136 void *pfid_hook_cookie; 137 int pfid_net; /* optional mask, or 128 */ 138 int pfid_acnt4; /* address count, IPv4 */ 139 int pfid_acnt6; /* address count, IPv6 */ 140 sa_family_t pfid_af; /* rule address family */ 141 u_int8_t pfid_iflags; /* PFI_AFLAG_* */ 142 }; 143 144 /* 145 * Address manipulation macros 146 */ 147 148 #ifdef INET 149 #ifndef INET6 150 #define PF_INET_ONLY 151 #endif /* ! INET6 */ 152 #endif /* INET */ 153 154 #ifdef INET6 155 #ifndef INET 156 #define PF_INET6_ONLY 157 #endif /* ! INET */ 158 #endif /* INET6 */ 159 160 #ifdef INET 161 #ifdef INET6 162 #define PF_INET_INET6 163 #endif /* INET6 */ 164 #endif /* INET */ 165 166 #else 167 168 #define PF_INET_INET6 169 170 #endif /* _KERNEL */ 171 172 /* Both IPv4 and IPv6 */ 173 #ifdef PF_INET_INET6 174 175 #define PF_AEQ(a, b, c) \ 176 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \ 177 ((a)->addr32[3] == (b)->addr32[3] && \ 178 (a)->addr32[2] == (b)->addr32[2] && \ 179 (a)->addr32[1] == (b)->addr32[1] && \ 180 (a)->addr32[0] == (b)->addr32[0])) \ 181 182 #define PF_ANEQ(a, b, c) \ 183 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \ 184 ((a)->addr32[3] != (b)->addr32[3] || \ 185 (a)->addr32[2] != (b)->addr32[2] || \ 186 (a)->addr32[1] != (b)->addr32[1] || \ 187 (a)->addr32[0] != (b)->addr32[0])) \ 188 189 #define PF_AZERO(a, c) \ 190 ((c == AF_INET && !(a)->addr32[0]) || \ 191 (!(a)->addr32[0] && !(a)->addr32[1] && \ 192 !(a)->addr32[2] && !(a)->addr32[3] )) \ 193 194 #define PF_MATCHA(n, a, m, b, f) \ 195 pf_match_addr(n, a, m, b, f) 196 197 #define PF_ACPY(a, b, f) \ 198 pf_addrcpy(a, b, f) 199 200 #define PF_AINC(a, f) \ 201 pf_addr_inc(a, f) 202 203 #define PF_POOLMASK(a, b, c, d, f) \ 204 pf_poolmask(a, b, c, d, f) 205 206 #else 207 208 /* Just IPv6 */ 209 210 #ifdef PF_INET6_ONLY 211 212 #define PF_AEQ(a, b, c) \ 213 ((a)->addr32[3] == (b)->addr32[3] && \ 214 (a)->addr32[2] == (b)->addr32[2] && \ 215 (a)->addr32[1] == (b)->addr32[1] && \ 216 (a)->addr32[0] == (b)->addr32[0]) \ 217 218 #define PF_ANEQ(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_AZERO(a, c) \ 225 (!(a)->addr32[0] && \ 226 !(a)->addr32[1] && \ 227 !(a)->addr32[2] && \ 228 !(a)->addr32[3] ) \ 229 230 #define PF_MATCHA(n, a, m, b, f) \ 231 pf_match_addr(n, a, m, b, f) 232 233 #define PF_ACPY(a, b, f) \ 234 pf_addrcpy(a, b, f) 235 236 #define PF_AINC(a, f) \ 237 pf_addr_inc(a, f) 238 239 #define PF_POOLMASK(a, b, c, d, f) \ 240 pf_poolmask(a, b, c, d, f) 241 242 #else 243 244 /* Just IPv4 */ 245 #ifdef PF_INET_ONLY 246 247 #define PF_AEQ(a, b, c) \ 248 ((a)->addr32[0] == (b)->addr32[0]) 249 250 #define PF_ANEQ(a, b, c) \ 251 ((a)->addr32[0] != (b)->addr32[0]) 252 253 #define PF_AZERO(a, c) \ 254 (!(a)->addr32[0]) 255 256 #define PF_MATCHA(n, a, m, b, f) \ 257 pf_match_addr(n, a, m, b, f) 258 259 #define PF_ACPY(a, b, f) \ 260 (a)->v4.s_addr = (b)->v4.s_addr 261 262 #define PF_AINC(a, f) \ 263 do { \ 264 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \ 265 } while (0) 266 267 #define PF_POOLMASK(a, b, c, d, f) \ 268 do { \ 269 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \ 270 (((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \ 271 } while (0) 272 273 #endif /* PF_INET_ONLY */ 274 #endif /* PF_INET6_ONLY */ 275 #endif /* PF_INET_INET6 */ 276 277 #define PF_MISMATCHAW(aw, x, af, not) \ 278 ( \ 279 (((aw)->type == PF_ADDR_NOROUTE && \ 280 pf_routable((x), (af))) || \ 281 ((aw)->type == PF_ADDR_TABLE && \ 282 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \ 283 ((aw)->type == PF_ADDR_DYNIFTL && \ 284 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \ 285 ((aw)->type == PF_ADDR_ADDRMASK && \ 286 !PF_AZERO(&(aw)->v.a.mask, (af)) && \ 287 !PF_MATCHA(0, &(aw)->v.a.addr, \ 288 &(aw)->v.a.mask, (x), (af)))) != \ 289 (not) \ 290 ) 291 292 struct pf_rule_uid { 293 uid_t uid[2]; 294 u_int8_t op; 295 }; 296 297 struct pf_rule_gid { 298 uid_t gid[2]; 299 u_int8_t op; 300 }; 301 302 struct pf_rule_addr { 303 struct pf_addr_wrap addr; 304 u_int16_t port[2]; 305 u_int8_t not; 306 u_int8_t port_op; 307 }; 308 309 struct pf_pooladdr { 310 struct pf_addr_wrap addr; 311 TAILQ_ENTRY(pf_pooladdr) entries; 312 char ifname[IFNAMSIZ]; 313 struct pfi_kif *kif; 314 }; 315 316 TAILQ_HEAD(pf_palist, pf_pooladdr); 317 318 struct pf_poolhashkey { 319 union { 320 u_int8_t key8[16]; 321 u_int16_t key16[8]; 322 u_int32_t key32[4]; 323 } pfk; /* 128-bit hash key */ 324 #define key8 pfk.key8 325 #define key16 pfk.key16 326 #define key32 pfk.key32 327 }; 328 329 struct pf_pool { 330 struct pf_palist list; 331 struct pf_pooladdr *cur; 332 struct pf_poolhashkey key; 333 struct pf_addr counter; 334 int tblidx; 335 u_int16_t proxy_port[2]; 336 u_int8_t port_op; 337 u_int8_t opts; 338 }; 339 340 341 /* A packed Operating System description for fingerprinting */ 342 typedef u_int32_t pf_osfp_t; 343 #define PF_OSFP_ANY ((pf_osfp_t)0) 344 #define PF_OSFP_UNKNOWN ((pf_osfp_t)-1) 345 #define PF_OSFP_NOMATCH ((pf_osfp_t)-2) 346 347 struct pf_osfp_entry { 348 SLIST_ENTRY(pf_osfp_entry) fp_entry; 349 pf_osfp_t fp_os; 350 int fp_enflags; 351 #define PF_OSFP_EXPANDED 0x001 /* expanded entry */ 352 #define PF_OSFP_GENERIC 0x002 /* generic signature */ 353 #define PF_OSFP_NODETAIL 0x004 /* no p0f details */ 354 #define PF_OSFP_LEN 32 355 char fp_class_nm[PF_OSFP_LEN]; 356 char fp_version_nm[PF_OSFP_LEN]; 357 char fp_subtype_nm[PF_OSFP_LEN]; 358 }; 359 #define PF_OSFP_ENTRY_EQ(a, b) \ 360 ((a)->fp_os == (b)->fp_os && \ 361 memcmp((a)->fp_class_nm, (b)->fp_class_nm, PF_OSFP_LEN) == 0 && \ 362 memcmp((a)->fp_version_nm, (b)->fp_version_nm, PF_OSFP_LEN) == 0 && \ 363 memcmp((a)->fp_subtype_nm, (b)->fp_subtype_nm, PF_OSFP_LEN) == 0) 364 365 /* handle pf_osfp_t packing */ 366 #define _FP_RESERVED_BIT 1 /* For the special negative #defines */ 367 #define _FP_UNUSED_BITS 1 368 #define _FP_CLASS_BITS 10 /* OS Class (Windows, Linux) */ 369 #define _FP_VERSION_BITS 10 /* OS version (95, 98, NT, 2.4.54, 3.2) */ 370 #define _FP_SUBTYPE_BITS 10 /* patch level (NT SP4, SP3, ECN patch) */ 371 #define PF_OSFP_UNPACK(osfp, class, version, subtype) do { \ 372 (class) = ((osfp) >> (_FP_VERSION_BITS+_FP_SUBTYPE_BITS)) & \ 373 ((1 << _FP_CLASS_BITS) - 1); \ 374 (version) = ((osfp) >> _FP_SUBTYPE_BITS) & \ 375 ((1 << _FP_VERSION_BITS) - 1);\ 376 (subtype) = (osfp) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 377 } while(0) 378 #define PF_OSFP_PACK(osfp, class, version, subtype) do { \ 379 (osfp) = ((class) & ((1 << _FP_CLASS_BITS) - 1)) << (_FP_VERSION_BITS \ 380 + _FP_SUBTYPE_BITS); \ 381 (osfp) |= ((version) & ((1 << _FP_VERSION_BITS) - 1)) << \ 382 _FP_SUBTYPE_BITS; \ 383 (osfp) |= (subtype) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 384 } while(0) 385 386 /* the fingerprint of an OSes TCP SYN packet */ 387 typedef u_int64_t pf_tcpopts_t; 388 struct pf_os_fingerprint { 389 SLIST_HEAD(pf_osfp_enlist, pf_osfp_entry) fp_oses; /* list of matches */ 390 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 391 u_int16_t fp_wsize; /* TCP window size */ 392 u_int16_t fp_psize; /* ip->ip_len */ 393 u_int16_t fp_mss; /* TCP MSS */ 394 u_int16_t fp_flags; 395 #define PF_OSFP_WSIZE_MOD 0x0001 /* Window modulus */ 396 #define PF_OSFP_WSIZE_DC 0x0002 /* Window don't care */ 397 #define PF_OSFP_WSIZE_MSS 0x0004 /* Window multiple of MSS */ 398 #define PF_OSFP_WSIZE_MTU 0x0008 /* Window multiple of MTU */ 399 #define PF_OSFP_PSIZE_MOD 0x0010 /* packet size modulus */ 400 #define PF_OSFP_PSIZE_DC 0x0020 /* packet size don't care */ 401 #define PF_OSFP_WSCALE 0x0040 /* TCP window scaling */ 402 #define PF_OSFP_WSCALE_MOD 0x0080 /* TCP window scale modulus */ 403 #define PF_OSFP_WSCALE_DC 0x0100 /* TCP window scale dont-care */ 404 #define PF_OSFP_MSS 0x0200 /* TCP MSS */ 405 #define PF_OSFP_MSS_MOD 0x0400 /* TCP MSS modulus */ 406 #define PF_OSFP_MSS_DC 0x0800 /* TCP MSS dont-care */ 407 #define PF_OSFP_DF 0x1000 /* IPv4 don't fragment bit */ 408 #define PF_OSFP_TS0 0x2000 /* Zero timestamp */ 409 u_int8_t fp_optcnt; /* TCP option count */ 410 u_int8_t fp_wscale; /* TCP window scaling */ 411 u_int8_t fp_ttl; /* IPv4 TTL */ 412 #define PF_OSFP_MAXTTL_OFFSET 40 413 /* TCP options packing */ 414 #define PF_OSFP_TCPOPT_NOP 0x0 /* TCP NOP option */ 415 #define PF_OSFP_TCPOPT_WSCALE 0x1 /* TCP window scaling option */ 416 #define PF_OSFP_TCPOPT_MSS 0x2 /* TCP max segment size opt */ 417 #define PF_OSFP_TCPOPT_SACK 0x3 /* TCP SACK OK option */ 418 #define PF_OSFP_TCPOPT_TS 0x4 /* TCP timestamp option */ 419 #define PF_OSFP_TCPOPT_BITS 3 /* bits used by each option */ 420 #define PF_OSFP_MAX_OPTS \ 421 (sizeof(((struct pf_os_fingerprint *)0)->fp_tcpopts) * 8) \ 422 / PF_OSFP_TCPOPT_BITS 423 424 SLIST_ENTRY(pf_os_fingerprint) fp_next; 425 }; 426 427 struct pf_osfp_ioctl { 428 struct pf_osfp_entry fp_os; 429 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 430 u_int16_t fp_wsize; /* TCP window size */ 431 u_int16_t fp_psize; /* ip->ip_len */ 432 u_int16_t fp_mss; /* TCP MSS */ 433 u_int16_t fp_flags; 434 u_int8_t fp_optcnt; /* TCP option count */ 435 u_int8_t fp_wscale; /* TCP window scaling */ 436 u_int8_t fp_ttl; /* IPv4 TTL */ 437 438 int fp_getnum; /* DIOCOSFPGET number */ 439 }; 440 441 442 union pf_rule_ptr { 443 struct pf_rule *ptr; 444 u_int32_t nr; 445 }; 446 447 struct pf_rule { 448 struct pf_rule_addr src; 449 struct pf_rule_addr dst; 450 #define PF_SKIP_IFP 0 451 #define PF_SKIP_DIR 1 452 #define PF_SKIP_AF 2 453 #define PF_SKIP_PROTO 3 454 #define PF_SKIP_SRC_ADDR 4 455 #define PF_SKIP_SRC_PORT 5 456 #define PF_SKIP_DST_ADDR 6 457 #define PF_SKIP_DST_PORT 7 458 #define PF_SKIP_COUNT 8 459 union pf_rule_ptr skip[PF_SKIP_COUNT]; 460 #define PF_RULE_LABEL_SIZE 64 461 char label[PF_RULE_LABEL_SIZE]; 462 #define PF_QNAME_SIZE 16 463 char ifname[IFNAMSIZ]; 464 char qname[PF_QNAME_SIZE]; 465 char pqname[PF_QNAME_SIZE]; 466 #define PF_ANCHOR_NAME_SIZE 16 467 char anchorname[PF_ANCHOR_NAME_SIZE]; 468 #define PF_TAG_NAME_SIZE 16 469 char tagname[PF_TAG_NAME_SIZE]; 470 char match_tagname[PF_TAG_NAME_SIZE]; 471 472 TAILQ_ENTRY(pf_rule) entries; 473 struct pf_pool rpool; 474 475 u_int64_t evaluations; 476 u_int64_t packets; 477 u_int64_t bytes; 478 479 struct pfi_kif *kif; 480 struct pf_anchor *anchor; 481 482 pf_osfp_t os_fingerprint; 483 484 u_int32_t timeout[PFTM_MAX]; 485 u_int32_t states; 486 u_int32_t max_states; 487 u_int32_t src_nodes; 488 u_int32_t max_src_nodes; 489 u_int32_t max_src_states; 490 u_int32_t qid; 491 u_int32_t pqid; 492 u_int32_t rt_listid; 493 u_int32_t nr; 494 495 u_int16_t return_icmp; 496 u_int16_t return_icmp6; 497 u_int16_t max_mss; 498 u_int16_t tag; 499 u_int16_t match_tag; 500 501 struct pf_rule_uid uid; 502 struct pf_rule_gid gid; 503 504 u_int32_t rule_flag; 505 u_int8_t action; 506 u_int8_t direction; 507 u_int8_t log; 508 u_int8_t quick; 509 u_int8_t ifnot; 510 u_int8_t match_tag_not; 511 u_int8_t natpass; 512 513 #define PF_STATE_NORMAL 0x1 514 #define PF_STATE_MODULATE 0x2 515 #define PF_STATE_SYNPROXY 0x3 516 u_int8_t keep_state; 517 sa_family_t af; 518 u_int8_t proto; 519 u_int8_t type; 520 u_int8_t code; 521 u_int8_t flags; 522 u_int8_t flagset; 523 u_int8_t min_ttl; 524 u_int8_t allow_opts; 525 u_int8_t rt; 526 u_int8_t return_ttl; 527 u_int8_t tos; 528 }; 529 530 /* rule flags */ 531 #define PFRULE_DROP 0x0000 532 #define PFRULE_RETURNRST 0x0001 533 #define PFRULE_FRAGMENT 0x0002 534 #define PFRULE_RETURNICMP 0x0004 535 #define PFRULE_RETURN 0x0008 536 #define PFRULE_NOSYNC 0x0010 537 #define PFRULE_SRCTRACK 0x0020 /* track source states */ 538 #define PFRULE_RULESRCTRACK 0x0040 /* per rule */ 539 540 /* scrub flags */ 541 #define PFRULE_NODF 0x0100 542 #define PFRULE_FRAGCROP 0x0200 /* non-buffering frag cache */ 543 #define PFRULE_FRAGDROP 0x0400 /* drop funny fragments */ 544 #define PFRULE_RANDOMID 0x0800 545 #define PFRULE_REASSEMBLE_TCP 0x1000 546 547 /* rule flags again */ 548 #define PFRULE_IFBOUND 0x00010000 /* if-bound */ 549 #define PFRULE_GRBOUND 0x00020000 /* group-bound */ 550 551 #define PFSTATE_HIWAT 10000 /* default state table size */ 552 553 struct pf_src_node { 554 RB_ENTRY(pf_src_node) entry; 555 struct pf_addr addr; 556 struct pf_addr raddr; 557 union pf_rule_ptr rule; 558 struct pfi_kif *kif; 559 u_int32_t bytes; 560 u_int32_t packets; 561 u_int32_t states; 562 u_int32_t creation; 563 u_int32_t expire; 564 sa_family_t af; 565 u_int8_t ruletype; 566 }; 567 568 #define PFSNODE_HIWAT 10000 /* default source node table size */ 569 570 struct pf_state_scrub { 571 u_int16_t pfss_flags; 572 #define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */ 573 u_int8_t pfss_ttl; /* stashed TTL */ 574 u_int8_t pad; 575 u_int32_t pfss_ts_mod; /* timestamp modulation */ 576 }; 577 578 struct pf_state_host { 579 struct pf_addr addr; 580 u_int16_t port; 581 u_int16_t pad; 582 }; 583 584 struct pf_state_peer { 585 u_int32_t seqlo; /* Max sequence number sent */ 586 u_int32_t seqhi; /* Max the other end ACKd + win */ 587 u_int32_t seqdiff; /* Sequence number modulator */ 588 u_int16_t max_win; /* largest window (pre scaling) */ 589 u_int8_t state; /* active state level */ 590 u_int8_t wscale; /* window scaling factor */ 591 u_int16_t mss; /* Maximum segment size option */ 592 struct pf_state_scrub *scrub; /* state is scrubbed */ 593 }; 594 595 TAILQ_HEAD(pf_state_queue, pf_state); 596 597 struct pf_state { 598 u_int64_t id; 599 union { 600 struct { 601 RB_ENTRY(pf_state) entry_lan_ext; 602 RB_ENTRY(pf_state) entry_ext_gwy; 603 RB_ENTRY(pf_state) entry_id; 604 TAILQ_ENTRY(pf_state) entry_updates; 605 struct pfi_kif *kif; 606 } s; 607 char ifname[IFNAMSIZ]; 608 } u; 609 struct pf_state_host lan; 610 struct pf_state_host gwy; 611 struct pf_state_host ext; 612 struct pf_state_peer src; 613 struct pf_state_peer dst; 614 union pf_rule_ptr rule; 615 union pf_rule_ptr anchor; 616 union pf_rule_ptr nat_rule; 617 struct pf_addr rt_addr; 618 struct pfi_kif *rt_kif; 619 struct pf_src_node *src_node; 620 struct pf_src_node *nat_src_node; 621 u_int32_t creation; 622 u_int32_t expire; 623 u_int32_t pfsync_time; 624 u_int32_t packets[2]; 625 u_int32_t bytes[2]; 626 u_int32_t creatorid; 627 sa_family_t af; 628 u_int8_t proto; 629 u_int8_t direction; 630 u_int8_t log; 631 u_int8_t allow_opts; 632 u_int8_t timeout; 633 u_int8_t sync_flags; 634 #define PFSTATE_NOSYNC 0x01 635 #define PFSTATE_FROMSYNC 0x02 636 u_int8_t pad; 637 }; 638 639 TAILQ_HEAD(pf_rulequeue, pf_rule); 640 641 struct pf_anchor; 642 643 struct pf_ruleset { 644 TAILQ_ENTRY(pf_ruleset) entries; 645 #define PF_RULESET_NAME_SIZE 16 646 char name[PF_RULESET_NAME_SIZE]; 647 struct { 648 struct pf_rulequeue queues[2]; 649 struct { 650 struct pf_rulequeue *ptr; 651 u_int32_t ticket; 652 int open; 653 } active, inactive; 654 } rules[PF_RULESET_MAX]; 655 struct pf_anchor *anchor; 656 u_int32_t tticket; 657 int tables; 658 int topen; 659 }; 660 661 TAILQ_HEAD(pf_rulesetqueue, pf_ruleset); 662 663 struct pf_anchor { 664 TAILQ_ENTRY(pf_anchor) entries; 665 char name[PF_ANCHOR_NAME_SIZE]; 666 struct pf_rulesetqueue rulesets; 667 int tables; 668 }; 669 670 TAILQ_HEAD(pf_anchorqueue, pf_anchor); 671 672 #define PF_RESERVED_ANCHOR "_pf" 673 #define PF_INTERFACE_RULESET "_if" 674 675 #define PFR_TFLAG_PERSIST 0x00000001 676 #define PFR_TFLAG_CONST 0x00000002 677 #define PFR_TFLAG_ACTIVE 0x00000004 678 #define PFR_TFLAG_INACTIVE 0x00000008 679 #define PFR_TFLAG_REFERENCED 0x00000010 680 #define PFR_TFLAG_REFDANCHOR 0x00000020 681 #define PFR_TFLAG_USRMASK 0x00000003 682 #define PFR_TFLAG_SETMASK 0x0000003C 683 #define PFR_TFLAG_ALLMASK 0x0000003F 684 685 struct pfr_table { 686 char pfrt_anchor[PF_ANCHOR_NAME_SIZE]; 687 char pfrt_ruleset[PF_RULESET_NAME_SIZE]; 688 char pfrt_name[PF_TABLE_NAME_SIZE]; 689 u_int32_t pfrt_flags; 690 u_int8_t pfrt_fback; 691 }; 692 693 enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED, 694 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE, 695 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_MAX }; 696 697 struct pfr_addr { 698 union { 699 struct in_addr _pfra_ip4addr; 700 struct in6_addr _pfra_ip6addr; 701 } pfra_u; 702 u_int8_t pfra_af; 703 u_int8_t pfra_net; 704 u_int8_t pfra_not; 705 u_int8_t pfra_fback; 706 }; 707 #define pfra_ip4addr pfra_u._pfra_ip4addr 708 #define pfra_ip6addr pfra_u._pfra_ip6addr 709 710 enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX }; 711 enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX }; 712 #define PFR_OP_XPASS PFR_OP_ADDR_MAX 713 714 struct pfr_astats { 715 struct pfr_addr pfras_a; 716 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 717 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 718 long pfras_tzero; 719 }; 720 721 enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX }; 722 723 struct pfr_tstats { 724 struct pfr_table pfrts_t; 725 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 726 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 727 u_int64_t pfrts_match; 728 u_int64_t pfrts_nomatch; 729 long pfrts_tzero; 730 int pfrts_cnt; 731 int pfrts_refcnt[PFR_REFCNT_MAX]; 732 }; 733 #define pfrts_name pfrts_t.pfrt_name 734 #define pfrts_flags pfrts_t.pfrt_flags 735 736 SLIST_HEAD(pfr_kentryworkq, pfr_kentry); 737 struct pfr_kentry { 738 struct radix_node pfrke_node[2]; 739 union sockaddr_union pfrke_sa; 740 u_int64_t pfrke_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 741 u_int64_t pfrke_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 742 SLIST_ENTRY(pfr_kentry) pfrke_workq; 743 long pfrke_tzero; 744 u_int8_t pfrke_af; 745 u_int8_t pfrke_net; 746 u_int8_t pfrke_not; 747 u_int8_t pfrke_mark; 748 }; 749 750 SLIST_HEAD(pfr_ktableworkq, pfr_ktable); 751 RB_HEAD(pfr_ktablehead, pfr_ktable); 752 struct pfr_ktable { 753 struct pfr_tstats pfrkt_ts; 754 RB_ENTRY(pfr_ktable) pfrkt_tree; 755 SLIST_ENTRY(pfr_ktable) pfrkt_workq; 756 struct radix_node_head *pfrkt_ip4; 757 struct radix_node_head *pfrkt_ip6; 758 struct pfr_ktable *pfrkt_shadow; 759 struct pfr_ktable *pfrkt_root; 760 struct pf_ruleset *pfrkt_rs; 761 long pfrkt_larg; 762 int pfrkt_nflags; 763 }; 764 #define pfrkt_t pfrkt_ts.pfrts_t 765 #define pfrkt_name pfrkt_t.pfrt_name 766 #define pfrkt_anchor pfrkt_t.pfrt_anchor 767 #define pfrkt_ruleset pfrkt_t.pfrt_ruleset 768 #define pfrkt_flags pfrkt_t.pfrt_flags 769 #define pfrkt_cnt pfrkt_ts.pfrts_cnt 770 #define pfrkt_refcnt pfrkt_ts.pfrts_refcnt 771 #define pfrkt_packets pfrkt_ts.pfrts_packets 772 #define pfrkt_bytes pfrkt_ts.pfrts_bytes 773 #define pfrkt_match pfrkt_ts.pfrts_match 774 #define pfrkt_nomatch pfrkt_ts.pfrts_nomatch 775 #define pfrkt_tzero pfrkt_ts.pfrts_tzero 776 777 RB_HEAD(pf_state_tree_lan_ext, pf_state); 778 RB_PROTOTYPE(pf_state_tree_lan_ext, pf_state, 779 u.s.entry_lan_ext, pf_state_compare_lan_ext); 780 781 RB_HEAD(pf_state_tree_ext_gwy, pf_state); 782 RB_PROTOTYPE(pf_state_tree_ext_gwy, pf_state, 783 u.s.entry_ext_gwy, pf_state_compare_ext_gwy); 784 785 struct pfi_if { 786 char pfif_name[IFNAMSIZ]; 787 u_int64_t pfif_packets[2][2][2]; 788 u_int64_t pfif_bytes[2][2][2]; 789 u_int64_t pfif_addcnt; 790 u_int64_t pfif_delcnt; 791 long pfif_tzero; 792 int pfif_states; 793 int pfif_rules; 794 int pfif_flags; 795 }; 796 797 TAILQ_HEAD(pfi_grouphead, pfi_kif); 798 TAILQ_HEAD(pfi_statehead, pfi_kif); 799 RB_HEAD(pfi_ifhead, pfi_kif); 800 struct pfi_kif { 801 struct pfi_if pfik_if; 802 RB_ENTRY(pfi_kif) pfik_tree; 803 struct pf_state_tree_lan_ext pfik_lan_ext; 804 struct pf_state_tree_ext_gwy pfik_ext_gwy; 805 struct pfi_grouphead pfik_grouphead; 806 TAILQ_ENTRY(pfi_kif) pfik_instances; 807 TAILQ_ENTRY(pfi_kif) pfik_w_states; 808 struct hook_desc_head *pfik_ah_head; 809 void *pfik_ah_cookie; 810 struct pfi_kif *pfik_parent; 811 struct ifnet *pfik_ifp; 812 int pfik_states; 813 int pfik_rules; 814 }; 815 #define pfik_name pfik_if.pfif_name 816 #define pfik_packets pfik_if.pfif_packets 817 #define pfik_bytes pfik_if.pfif_bytes 818 #define pfik_tzero pfik_if.pfif_tzero 819 #define pfik_flags pfik_if.pfif_flags 820 #define pfik_addcnt pfik_if.pfif_addcnt 821 #define pfik_delcnt pfik_if.pfif_delcnt 822 #define pfik_states pfik_if.pfif_states 823 #define pfik_rules pfik_if.pfif_rules 824 825 #define PFI_IFLAG_GROUP 0x0001 /* group of interfaces */ 826 #define PFI_IFLAG_INSTANCE 0x0002 /* single instance */ 827 #define PFI_IFLAG_CLONABLE 0x0010 /* clonable group */ 828 #define PFI_IFLAG_DYNAMIC 0x0020 /* dynamic group */ 829 #define PFI_IFLAG_ATTACHED 0x0040 /* interface attached */ 830 831 struct pf_pdesc { 832 u_int64_t tot_len; /* Make Mickey money */ 833 union { 834 struct tcphdr *tcp; 835 struct udphdr *udp; 836 struct icmp *icmp; 837 #ifdef INET6 838 struct icmp6_hdr *icmp6; 839 #endif /* INET6 */ 840 void *any; 841 } hdr; 842 struct pf_addr baddr; /* address before translation */ 843 struct pf_addr naddr; /* address after translation */ 844 struct pf_rule *nat_rule; /* nat/rdr rule applied to packet */ 845 struct pf_addr *src; 846 struct pf_addr *dst; 847 u_int16_t *ip_sum; 848 u_int32_t p_len; /* total length of payload */ 849 u_int16_t flags; /* Let SCRUB trigger behavior in 850 * state code. Easier than tags */ 851 #define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */ 852 sa_family_t af; 853 u_int8_t proto; 854 u_int8_t tos; 855 }; 856 857 /* flags for RDR options */ 858 #define PF_DPORT_RANGE 0x01 /* Dest port uses range */ 859 #define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */ 860 861 /* Reasons code for passing/dropping a packet */ 862 #define PFRES_MATCH 0 /* Explicit match of a rule */ 863 #define PFRES_BADOFF 1 /* Bad offset for pull_hdr */ 864 #define PFRES_FRAG 2 /* Dropping following fragment */ 865 #define PFRES_SHORT 3 /* Dropping short packet */ 866 #define PFRES_NORM 4 /* Dropping by normalizer */ 867 #define PFRES_MEMORY 5 /* Dropped due to lacking mem */ 868 #define PFRES_MAX 6 /* total+1 */ 869 870 #define PFRES_NAMES { \ 871 "match", \ 872 "bad-offset", \ 873 "fragment", \ 874 "short", \ 875 "normalize", \ 876 "memory", \ 877 NULL \ 878 } 879 880 /* UDP state enumeration */ 881 #define PFUDPS_NO_TRAFFIC 0 882 #define PFUDPS_SINGLE 1 883 #define PFUDPS_MULTIPLE 2 884 885 #define PFUDPS_NSTATES 3 /* number of state levels */ 886 887 #define PFUDPS_NAMES { \ 888 "NO_TRAFFIC", \ 889 "SINGLE", \ 890 "MULTIPLE", \ 891 NULL \ 892 } 893 894 /* Other protocol state enumeration */ 895 #define PFOTHERS_NO_TRAFFIC 0 896 #define PFOTHERS_SINGLE 1 897 #define PFOTHERS_MULTIPLE 2 898 899 #define PFOTHERS_NSTATES 3 /* number of state levels */ 900 901 #define PFOTHERS_NAMES { \ 902 "NO_TRAFFIC", \ 903 "SINGLE", \ 904 "MULTIPLE", \ 905 NULL \ 906 } 907 908 #define FCNT_STATE_SEARCH 0 909 #define FCNT_STATE_INSERT 1 910 #define FCNT_STATE_REMOVALS 2 911 #define FCNT_MAX 3 912 913 #define SCNT_SRC_NODE_SEARCH 0 914 #define SCNT_SRC_NODE_INSERT 1 915 #define SCNT_SRC_NODE_REMOVALS 2 916 #define SCNT_MAX 3 917 918 #define ACTION_SET(a, x) \ 919 do { \ 920 if ((a) != NULL) \ 921 *(a) = (x); \ 922 } while (0) 923 924 #define REASON_SET(a, x) \ 925 do { \ 926 if ((a) != NULL) \ 927 *(a) = (x); \ 928 if (x < PFRES_MAX) \ 929 pf_status.counters[x]++; \ 930 } while (0) 931 932 struct pf_status { 933 u_int64_t counters[PFRES_MAX]; 934 u_int64_t fcounters[FCNT_MAX]; 935 u_int64_t scounters[SCNT_MAX]; 936 u_int64_t pcounters[2][2][3]; 937 u_int64_t bcounters[2][2]; 938 u_int64_t stateid; 939 u_int32_t running; 940 u_int32_t states; 941 u_int32_t src_nodes; 942 u_int32_t since; 943 u_int32_t debug; 944 u_int32_t hostid; 945 char ifname[IFNAMSIZ]; 946 }; 947 948 struct cbq_opts { 949 u_int minburst; 950 u_int maxburst; 951 u_int pktsize; 952 u_int maxpktsize; 953 u_int ns_per_byte; 954 u_int maxidle; 955 int minidle; 956 u_int offtime; 957 int flags; 958 }; 959 960 struct priq_opts { 961 int flags; 962 }; 963 964 struct hfsc_opts { 965 /* real-time service curve */ 966 u_int rtsc_m1; /* slope of the 1st segment in bps */ 967 u_int rtsc_d; /* the x-projection of m1 in msec */ 968 u_int rtsc_m2; /* slope of the 2nd segment in bps */ 969 /* link-sharing service curve */ 970 u_int lssc_m1; 971 u_int lssc_d; 972 u_int lssc_m2; 973 /* upper-limit service curve */ 974 u_int ulsc_m1; 975 u_int ulsc_d; 976 u_int ulsc_m2; 977 int flags; 978 }; 979 980 struct pf_altq { 981 char ifname[IFNAMSIZ]; 982 983 void *altq_disc; /* discipline-specific state */ 984 TAILQ_ENTRY(pf_altq) entries; 985 986 /* scheduler spec */ 987 u_int8_t scheduler; /* scheduler type */ 988 u_int16_t tbrsize; /* tokenbucket regulator size */ 989 u_int32_t ifbandwidth; /* interface bandwidth */ 990 991 /* queue spec */ 992 char qname[PF_QNAME_SIZE]; /* queue name */ 993 char parent[PF_QNAME_SIZE]; /* parent name */ 994 u_int32_t parent_qid; /* parent queue id */ 995 u_int32_t bandwidth; /* queue bandwidth */ 996 u_int8_t priority; /* priority */ 997 u_int16_t qlimit; /* queue size limit */ 998 u_int16_t flags; /* misc flags */ 999 union { 1000 struct cbq_opts cbq_opts; 1001 struct priq_opts priq_opts; 1002 struct hfsc_opts hfsc_opts; 1003 } pq_u; 1004 1005 u_int32_t qid; /* return value */ 1006 }; 1007 1008 struct pf_tag { 1009 u_int16_t tag; /* tag id */ 1010 }; 1011 1012 struct pf_tagname { 1013 TAILQ_ENTRY(pf_tagname) entries; 1014 char name[PF_TAG_NAME_SIZE]; 1015 u_int16_t tag; 1016 int ref; 1017 }; 1018 1019 #define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */ 1020 #define PFFRAG_FRAG_HIWAT 1000 /* Number of fragmented packets */ 1021 #define PFFRAG_FRCENT_HIWAT 50000 /* Number of fragment cache entries */ 1022 #define PFFRAG_FRCACHE_HIWAT 10000 /* Number of fragment descriptors */ 1023 1024 /* 1025 * ioctl parameter structures 1026 */ 1027 1028 struct pfioc_pooladdr { 1029 u_int32_t action; 1030 u_int32_t ticket; 1031 u_int32_t nr; 1032 u_int32_t r_num; 1033 u_int8_t r_action; 1034 u_int8_t r_last; 1035 u_int8_t af; 1036 char anchor[PF_ANCHOR_NAME_SIZE]; 1037 char ruleset[PF_RULESET_NAME_SIZE]; 1038 struct pf_pooladdr addr; 1039 }; 1040 1041 struct pfioc_rule { 1042 u_int32_t action; 1043 u_int32_t ticket; 1044 u_int32_t pool_ticket; 1045 u_int32_t nr; 1046 char anchor[PF_ANCHOR_NAME_SIZE]; 1047 char ruleset[PF_RULESET_NAME_SIZE]; 1048 struct pf_rule rule; 1049 }; 1050 1051 struct pfioc_natlook { 1052 struct pf_addr saddr; 1053 struct pf_addr daddr; 1054 struct pf_addr rsaddr; 1055 struct pf_addr rdaddr; 1056 u_int16_t sport; 1057 u_int16_t dport; 1058 u_int16_t rsport; 1059 u_int16_t rdport; 1060 sa_family_t af; 1061 u_int8_t proto; 1062 u_int8_t direction; 1063 }; 1064 1065 struct pfioc_state { 1066 u_int32_t nr; 1067 struct pf_state state; 1068 }; 1069 1070 struct pfioc_state_kill { 1071 /* XXX returns the number of states killed in psk_af */ 1072 sa_family_t psk_af; 1073 int psk_proto; 1074 struct pf_rule_addr psk_src; 1075 struct pf_rule_addr psk_dst; 1076 char psk_ifname[IFNAMSIZ]; 1077 }; 1078 1079 struct pfioc_states { 1080 int ps_len; 1081 union { 1082 caddr_t psu_buf; 1083 struct pf_state *psu_states; 1084 } ps_u; 1085 #define ps_buf ps_u.psu_buf 1086 #define ps_states ps_u.psu_states 1087 }; 1088 1089 struct pfioc_src_nodes { 1090 int psn_len; 1091 union { 1092 caddr_t psu_buf; 1093 struct pf_src_node *psu_src_nodes; 1094 } psn_u; 1095 #define psn_buf psn_u.psu_buf 1096 #define psn_src_nodes psn_u.psu_src_nodes 1097 }; 1098 1099 struct pfioc_if { 1100 char ifname[IFNAMSIZ]; 1101 }; 1102 1103 struct pfioc_tm { 1104 int timeout; 1105 int seconds; 1106 }; 1107 1108 struct pfioc_limit { 1109 int index; 1110 unsigned limit; 1111 }; 1112 1113 struct pfioc_altq { 1114 u_int32_t action; 1115 u_int32_t ticket; 1116 u_int32_t nr; 1117 struct pf_altq altq; 1118 }; 1119 1120 struct pfioc_qstats { 1121 u_int32_t ticket; 1122 u_int32_t nr; 1123 void *buf; 1124 int nbytes; 1125 u_int8_t scheduler; 1126 }; 1127 1128 struct pfioc_anchor { 1129 u_int32_t nr; 1130 char name[PF_ANCHOR_NAME_SIZE]; 1131 }; 1132 1133 struct pfioc_ruleset { 1134 u_int32_t nr; 1135 char anchor[PF_ANCHOR_NAME_SIZE]; 1136 char name[PF_RULESET_NAME_SIZE]; 1137 }; 1138 1139 #define PF_RULESET_ALTQ (PF_RULESET_MAX) 1140 #define PF_RULESET_TABLE (PF_RULESET_MAX+1) 1141 struct pfioc_trans { 1142 int size; /* number of elements */ 1143 int esize; /* size of each element in bytes */ 1144 struct pfioc_trans_e { 1145 int rs_num; 1146 char anchor[PF_ANCHOR_NAME_SIZE]; 1147 char ruleset[PF_RULESET_NAME_SIZE]; 1148 u_int32_t ticket; 1149 } *array; 1150 }; 1151 1152 #define PFR_FLAG_ATOMIC 0x00000001 1153 #define PFR_FLAG_DUMMY 0x00000002 1154 #define PFR_FLAG_FEEDBACK 0x00000004 1155 #define PFR_FLAG_CLSTATS 0x00000008 1156 #define PFR_FLAG_ADDRSTOO 0x00000010 1157 #define PFR_FLAG_REPLACE 0x00000020 1158 #define PFR_FLAG_ALLRSETS 0x00000040 1159 #define PFR_FLAG_ALLMASK 0x0000007F 1160 #ifdef _KERNEL 1161 #define PFR_FLAG_USERIOCTL 0x10000000 1162 #endif 1163 1164 struct pfioc_table { 1165 struct pfr_table pfrio_table; 1166 void *pfrio_buffer; 1167 int pfrio_esize; 1168 int pfrio_size; 1169 int pfrio_size2; 1170 int pfrio_nadd; 1171 int pfrio_ndel; 1172 int pfrio_nchange; 1173 int pfrio_flags; 1174 u_int32_t pfrio_ticket; 1175 }; 1176 #define pfrio_exists pfrio_nadd 1177 #define pfrio_nzero pfrio_nadd 1178 #define pfrio_nmatch pfrio_nadd 1179 #define pfrio_naddr pfrio_size2 1180 #define pfrio_setflag pfrio_size2 1181 #define pfrio_clrflag pfrio_nadd 1182 1183 1184 #define PFI_FLAG_GROUP 0x0001 /* gets groups of interfaces */ 1185 #define PFI_FLAG_INSTANCE 0x0002 /* gets single interfaces */ 1186 #define PFI_FLAG_ALLMASK 0x0003 1187 1188 struct pfioc_iface { 1189 char pfiio_name[IFNAMSIZ]; 1190 void *pfiio_buffer; 1191 int pfiio_esize; 1192 int pfiio_size; 1193 int pfiio_nzero; 1194 int pfiio_flags; 1195 }; 1196 1197 1198 /* 1199 * ioctl operations 1200 */ 1201 1202 #define DIOCSTART _IO ('D', 1) 1203 #define DIOCSTOP _IO ('D', 2) 1204 #define DIOCBEGINRULES _IOWR('D', 3, struct pfioc_rule) 1205 #define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule) 1206 #define DIOCCOMMITRULES _IOWR('D', 5, struct pfioc_rule) 1207 #define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule) 1208 #define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule) 1209 /* XXX cut 8 - 17 */ 1210 #define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill) 1211 #define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state) 1212 #define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if) 1213 #define DIOCGETSTATUS _IOWR('D', 21, struct pf_status) 1214 #define DIOCCLRSTATUS _IO ('D', 22) 1215 #define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook) 1216 #define DIOCSETDEBUG _IOWR('D', 24, u_int32_t) 1217 #define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states) 1218 #define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule) 1219 /* XXX cut 26 - 28 */ 1220 #define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm) 1221 #define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm) 1222 #define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state) 1223 #define DIOCCLRRULECTRS _IO ('D', 38) 1224 #define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit) 1225 #define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit) 1226 #define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill) 1227 #define DIOCSTARTALTQ _IO ('D', 42) 1228 #define DIOCSTOPALTQ _IO ('D', 43) 1229 #define DIOCBEGINALTQS _IOWR('D', 44, u_int32_t) 1230 #define DIOCADDALTQ _IOWR('D', 45, struct pfioc_altq) 1231 #define DIOCCOMMITALTQS _IOWR('D', 46, u_int32_t) 1232 #define DIOCGETALTQS _IOWR('D', 47, struct pfioc_altq) 1233 #define DIOCGETALTQ _IOWR('D', 48, struct pfioc_altq) 1234 #define DIOCCHANGEALTQ _IOWR('D', 49, struct pfioc_altq) 1235 #define DIOCGETQSTATS _IOWR('D', 50, struct pfioc_qstats) 1236 #define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr) 1237 #define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr) 1238 #define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr) 1239 #define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr) 1240 #define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr) 1241 #define DIOCGETANCHORS _IOWR('D', 56, struct pfioc_anchor) 1242 #define DIOCGETANCHOR _IOWR('D', 57, struct pfioc_anchor) 1243 #define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset) 1244 #define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset) 1245 #define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table) 1246 #define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table) 1247 #define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table) 1248 #define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table) 1249 #define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table) 1250 #define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table) 1251 #define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table) 1252 #define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table) 1253 #define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table) 1254 #define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table) 1255 #define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table) 1256 #define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table) 1257 #define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table) 1258 #define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table) 1259 #define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table) 1260 #define DIOCRINABEGIN _IOWR('D', 75, struct pfioc_table) 1261 #define DIOCRINACOMMIT _IOWR('D', 76, struct pfioc_table) 1262 #define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table) 1263 #define DIOCOSFPFLUSH _IO('D', 78) 1264 #define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl) 1265 #define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl) 1266 #define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans) 1267 #define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans) 1268 #define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans) 1269 #define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes) 1270 #define DIOCCLRSRCNODES _IO('D', 85) 1271 #define DIOCSETHOSTID _IOWR('D', 86, u_int32_t) 1272 #define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface) 1273 #define DIOCICLRISTATS _IOWR('D', 88, struct pfioc_iface) 1274 1275 #ifdef _KERNEL 1276 RB_HEAD(pf_src_tree, pf_src_node); 1277 RB_PROTOTYPE(pf_src_tree, pf_src_node, entry, pf_src_compare); 1278 extern struct pf_src_tree tree_src_tracking; 1279 1280 RB_HEAD(pf_state_tree_id, pf_state); 1281 RB_PROTOTYPE(pf_state_tree_id, pf_state, 1282 entry_id, pf_state_compare_id); 1283 extern struct pf_state_tree_id tree_id; 1284 extern struct pf_state_queue state_updates; 1285 1286 extern struct pf_anchorqueue pf_anchors; 1287 extern struct pf_ruleset pf_main_ruleset; 1288 TAILQ_HEAD(pf_poolqueue, pf_pool); 1289 extern struct pf_poolqueue pf_pools[2]; 1290 TAILQ_HEAD(pf_altqqueue, pf_altq); 1291 extern struct pf_altqqueue pf_altqs[2]; 1292 extern struct pf_palist pf_pabuf; 1293 extern struct pfi_kif **pfi_index2kif; 1294 1295 extern u_int32_t ticket_altqs_active; 1296 extern u_int32_t ticket_altqs_inactive; 1297 extern int altqs_inactive_open; 1298 extern u_int32_t ticket_pabuf; 1299 extern struct pf_altqqueue *pf_altqs_active; 1300 extern struct pf_altqqueue *pf_altqs_inactive; 1301 extern struct pf_poolqueue *pf_pools_active; 1302 extern struct pf_poolqueue *pf_pools_inactive; 1303 extern int pf_tbladdr_setup(struct pf_ruleset *, 1304 struct pf_addr_wrap *); 1305 extern void pf_tbladdr_remove(struct pf_addr_wrap *); 1306 extern void pf_tbladdr_copyout(struct pf_addr_wrap *); 1307 extern void pf_calc_skip_steps(struct pf_rulequeue *); 1308 extern void pf_update_anchor_rules(void); 1309 extern struct pool pf_src_tree_pl, pf_rule_pl; 1310 extern struct pool pf_state_pl, pf_altq_pl, pf_pooladdr_pl; 1311 extern struct pool pf_state_scrub_pl; 1312 extern void pf_purge_timeout(void *); 1313 extern void pf_purge_expired_src_nodes(void); 1314 extern void pf_purge_expired_states(void); 1315 extern int pf_insert_state(struct pfi_kif *, 1316 struct pf_state *); 1317 extern int pf_insert_src_node(struct pf_src_node **, 1318 struct pf_rule *, struct pf_addr *, 1319 sa_family_t); 1320 void pf_src_tree_remove_state(struct pf_state *); 1321 extern struct pf_state *pf_find_state_byid(struct pf_state *); 1322 extern struct pf_state *pf_find_state_all(struct pf_state *key, 1323 u_int8_t tree, int *more); 1324 extern struct pf_anchor *pf_find_anchor(const char *); 1325 extern struct pf_ruleset *pf_find_ruleset(char *, char *); 1326 extern struct pf_ruleset *pf_find_or_create_ruleset( 1327 char[PF_ANCHOR_NAME_SIZE], 1328 char[PF_RULESET_NAME_SIZE]); 1329 extern void pf_remove_if_empty_ruleset( 1330 struct pf_ruleset *); 1331 1332 extern struct ifnet *sync_ifp; 1333 extern struct pf_rule pf_default_rule; 1334 extern void pf_addrcpy(struct pf_addr *, struct pf_addr *, 1335 u_int8_t); 1336 void pf_rm_rule(struct pf_rulequeue *, 1337 struct pf_rule *); 1338 1339 #ifdef INET 1340 int pf_test(int, struct ifnet *, struct mbuf **); 1341 #endif /* INET */ 1342 1343 #ifdef INET6 1344 int pf_test6(int, struct ifnet *, struct mbuf **); 1345 void pf_poolmask(struct pf_addr *, struct pf_addr*, 1346 struct pf_addr *, struct pf_addr *, u_int8_t); 1347 void pf_addr_inc(struct pf_addr *, sa_family_t); 1348 #endif /* INET6 */ 1349 1350 void *pf_pull_hdr(struct mbuf *, int, void *, int, u_short *, u_short *, 1351 sa_family_t); 1352 void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t); 1353 int pflog_packet(struct pfi_kif *, struct mbuf *, sa_family_t, u_int8_t, 1354 u_int8_t, struct pf_rule *, struct pf_rule *, struct pf_ruleset *); 1355 int pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *, 1356 struct pf_addr *, sa_family_t); 1357 int pf_match(u_int8_t, u_int32_t, u_int32_t, u_int32_t); 1358 int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t); 1359 int pf_match_uid(u_int8_t, uid_t, uid_t, uid_t); 1360 int pf_match_gid(u_int8_t, gid_t, gid_t, gid_t); 1361 1362 void pf_normalize_init(void); 1363 int pf_normalize_ip(struct mbuf **, int, struct pfi_kif *, u_short *); 1364 int pf_normalize_ip6(struct mbuf **, int, struct pfi_kif *, u_short *); 1365 int pf_normalize_tcp(int, struct pfi_kif *, struct mbuf *, int, int, void *, 1366 struct pf_pdesc *); 1367 void pf_normalize_tcp_cleanup(struct pf_state *); 1368 int pf_normalize_tcp_init(struct mbuf *, int, struct pf_pdesc *, 1369 struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *); 1370 int pf_normalize_tcp_stateful(struct mbuf *, int, struct pf_pdesc *, 1371 u_short *, struct tcphdr *, struct pf_state_peer *, 1372 struct pf_state_peer *, int *); 1373 u_int32_t 1374 pf_state_expires(const struct pf_state *); 1375 void pf_purge_expired_fragments(void); 1376 int pf_routable(struct pf_addr *addr, sa_family_t af); 1377 void pfr_initialize(void); 1378 int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t); 1379 void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t, 1380 u_int64_t, int, int, int); 1381 int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, 1382 struct pf_addr **, struct pf_addr **, sa_family_t); 1383 void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *); 1384 struct pfr_ktable * 1385 pfr_attach_table(struct pf_ruleset *, char *); 1386 void pfr_detach_table(struct pfr_ktable *); 1387 int pfr_clr_tables(struct pfr_table *, int *, int); 1388 int pfr_add_tables(struct pfr_table *, int, int *, int); 1389 int pfr_del_tables(struct pfr_table *, int, int *, int); 1390 int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int); 1391 int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int); 1392 int pfr_clr_tstats(struct pfr_table *, int, int *, int); 1393 int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int); 1394 int pfr_clr_addrs(struct pfr_table *, int *, int); 1395 int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1396 int); 1397 int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1398 int); 1399 int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1400 int *, int *, int *, int); 1401 int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int); 1402 int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int); 1403 int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *, 1404 int); 1405 int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1406 int); 1407 int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int); 1408 int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int); 1409 int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int); 1410 int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *, 1411 int *, u_int32_t, int); 1412 1413 void pfi_initialize(void); 1414 void pfi_attach_clone(struct if_clone *); 1415 void pfi_attach_ifnet(struct ifnet *); 1416 void pfi_detach_ifnet(struct ifnet *); 1417 struct pfi_kif *pfi_lookup_create(const char *); 1418 struct pfi_kif *pfi_lookup_if(const char *); 1419 int pfi_maybe_destroy(struct pfi_kif *); 1420 struct pfi_kif *pfi_attach_rule(const char *); 1421 void pfi_detach_rule(struct pfi_kif *); 1422 void pfi_attach_state(struct pfi_kif *); 1423 void pfi_detach_state(struct pfi_kif *); 1424 int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t); 1425 void pfi_dynaddr_copyout(struct pf_addr_wrap *); 1426 void pfi_dynaddr_remove(struct pf_addr_wrap *); 1427 void pfi_fill_oldstatus(struct pf_status *); 1428 int pfi_clr_istats(const char *, int *, int); 1429 int pfi_get_ifaces(const char *, struct pfi_if *, int *, int); 1430 int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *, 1431 sa_family_t); 1432 1433 extern struct pfi_statehead pfi_statehead; 1434 1435 u_int16_t pf_tagname2tag(char *); 1436 void pf_tag2tagname(u_int16_t, char *); 1437 void pf_tag_unref(u_int16_t); 1438 int pf_tag_packet(struct mbuf *, struct pf_tag *, int); 1439 u_int32_t pf_qname2qid(char *); 1440 void pf_qid2qname(u_int32_t, char *); 1441 void pf_qid_unref(u_int32_t); 1442 1443 extern struct pf_status pf_status; 1444 extern struct pool pf_frent_pl, pf_frag_pl; 1445 1446 struct pf_pool_limit { 1447 void *pp; 1448 unsigned limit; 1449 }; 1450 extern struct pf_pool_limit pf_pool_limits[PF_LIMIT_MAX]; 1451 1452 #endif /* _KERNEL */ 1453 1454 /* The fingerprint functions can be linked into userland programs (tcpdump) */ 1455 int pf_osfp_add(struct pf_osfp_ioctl *); 1456 #ifdef _KERNEL 1457 struct pf_osfp_enlist * 1458 pf_osfp_fingerprint(struct pf_pdesc *, struct mbuf *, int, 1459 const struct tcphdr *); 1460 #endif /* _KERNEL */ 1461 struct pf_osfp_enlist * 1462 pf_osfp_fingerprint_hdr(const struct ip *, const struct tcphdr *); 1463 void pf_osfp_flush(void); 1464 int pf_osfp_get(struct pf_osfp_ioctl *); 1465 void pf_osfp_initialize(void); 1466 int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t); 1467 struct pf_os_fingerprint * 1468 pf_osfp_validate(void); 1469 1470 1471 #endif /* _NET_PFVAR_H_ */ 1472
Indexes created Mon Sep 29 21:09:56 GMT 2025