pfvar.h revision 1.8
1 /* $NetBSD: pfvar.h,v 1.8 2004/12/04 14:21:23 peter Exp $ */ 2 /* $OpenBSD: pfvar.h,v 1.202 2004/07/12 00:50:22 itojun Exp $ */ 3 4 /* 5 * Copyright (c) 2001 Daniel Hartmeier 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * - Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * - Redistributions in binary form must reproduce the above 15 * copyright notice, this list of conditions and the following 16 * disclaimer in the documentation and/or other materials provided 17 * with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 22 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 23 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 25 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 26 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 27 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 29 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 * 32 */ 33 34 #ifndef _NET_PFVAR_H_ 35 #define _NET_PFVAR_H_ 36 37 #include <sys/param.h> 38 #include <sys/types.h> 39 #include <sys/queue.h> 40 #include <sys/tree.h> 41 42 #include <net/radix.h> 43 #ifdef __OpenBSD__ 44 #include <netinet/ip_ipsp.h> 45 #endif 46 #include <netinet/tcp_fsm.h> 47 48 #ifdef __NetBSD__ 49 union sockaddr_union { 50 struct sockaddr sa; 51 struct sockaddr_in sin; 52 struct sockaddr_in6 sin6; 53 }; 54 #endif 55 56 struct ip; 57 58 #define PF_TCPS_PROXY_SRC ((TCP_NSTATES)+0) 59 #define PF_TCPS_PROXY_DST ((TCP_NSTATES)+1) 60 61 enum { PF_INOUT, PF_IN, PF_OUT }; 62 enum { PF_LAN_EXT, PF_EXT_GWY, PF_ID }; 63 enum { PF_PASS, PF_DROP, PF_SCRUB, PF_NAT, PF_NONAT, 64 PF_BINAT, PF_NOBINAT, PF_RDR, PF_NORDR, PF_SYNPROXY_DROP }; 65 enum { PF_RULESET_SCRUB, PF_RULESET_FILTER, PF_RULESET_NAT, 66 PF_RULESET_BINAT, PF_RULESET_RDR, PF_RULESET_MAX }; 67 enum { PF_OP_NONE, PF_OP_IRG, PF_OP_EQ, PF_OP_NE, PF_OP_LT, 68 PF_OP_LE, PF_OP_GT, PF_OP_GE, PF_OP_XRG, PF_OP_RRG }; 69 enum { PF_DEBUG_NONE, PF_DEBUG_URGENT, PF_DEBUG_MISC, PF_DEBUG_NOISY }; 70 enum { PF_CHANGE_NONE, PF_CHANGE_ADD_HEAD, PF_CHANGE_ADD_TAIL, 71 PF_CHANGE_ADD_BEFORE, PF_CHANGE_ADD_AFTER, 72 PF_CHANGE_REMOVE, PF_CHANGE_GET_TICKET }; 73 /* 74 * Note about PFTM_*: real indices into pf_rule.timeout[] come before 75 * PFTM_MAX, special cases afterwards. See pf_state_expires(). 76 */ 77 enum { PFTM_TCP_FIRST_PACKET, PFTM_TCP_OPENING, PFTM_TCP_ESTABLISHED, 78 PFTM_TCP_CLOSING, PFTM_TCP_FIN_WAIT, PFTM_TCP_CLOSED, 79 PFTM_UDP_FIRST_PACKET, PFTM_UDP_SINGLE, PFTM_UDP_MULTIPLE, 80 PFTM_ICMP_FIRST_PACKET, PFTM_ICMP_ERROR_REPLY, 81 PFTM_OTHER_FIRST_PACKET, PFTM_OTHER_SINGLE, 82 PFTM_OTHER_MULTIPLE, PFTM_FRAG, PFTM_INTERVAL, 83 PFTM_ADAPTIVE_START, PFTM_ADAPTIVE_END, PFTM_SRC_NODE, 84 PFTM_TS_DIFF, PFTM_MAX, PFTM_PURGE, PFTM_UNTIL_PACKET }; 85 enum { PF_NOPFROUTE, PF_FASTROUTE, PF_ROUTETO, PF_DUPTO, PF_REPLYTO }; 86 enum { PF_LIMIT_STATES, PF_LIMIT_SRC_NODES, PF_LIMIT_FRAGS, PF_LIMIT_MAX }; 87 #define PF_POOL_IDMASK 0x0f 88 enum { PF_POOL_NONE, PF_POOL_BITMASK, PF_POOL_RANDOM, 89 PF_POOL_SRCHASH, PF_POOL_ROUNDROBIN }; 90 enum { PF_ADDR_ADDRMASK, PF_ADDR_NOROUTE, PF_ADDR_DYNIFTL, 91 PF_ADDR_TABLE }; 92 #define PF_POOL_TYPEMASK 0x0f 93 #define PF_POOL_STICKYADDR 0x20 94 #define PF_WSCALE_FLAG 0x80 95 #define PF_WSCALE_MASK 0x0f 96 97 struct pf_addr { 98 union { 99 struct in_addr v4; 100 struct in6_addr v6; 101 u_int8_t addr8[16]; 102 u_int16_t addr16[8]; 103 u_int32_t addr32[4]; 104 } pfa; /* 128-bit address */ 105 #define v4 pfa.v4 106 #define v6 pfa.v6 107 #define addr8 pfa.addr8 108 #define addr16 pfa.addr16 109 #define addr32 pfa.addr32 110 }; 111 112 #define PF_TABLE_NAME_SIZE 32 113 114 #define PFI_AFLAG_NETWORK 0x01 115 #define PFI_AFLAG_BROADCAST 0x02 116 #define PFI_AFLAG_PEER 0x04 117 #define PFI_AFLAG_MODEMASK 0x07 118 #define PFI_AFLAG_NOALIAS 0x08 119 120 struct pf_addr_wrap { 121 union { 122 struct { 123 struct pf_addr addr; 124 struct pf_addr mask; 125 } a; 126 char ifname[IFNAMSIZ]; 127 char tblname[PF_TABLE_NAME_SIZE]; 128 } v; 129 union { 130 struct pfi_dynaddr *dyn; 131 struct pfr_ktable *tbl; 132 int dyncnt; 133 int tblcnt; 134 } p; 135 u_int8_t type; /* PF_ADDR_* */ 136 u_int8_t iflags; /* PFI_AFLAG_* */ 137 }; 138 139 #ifdef __NetBSD__ 140 struct hook_desc { 141 TAILQ_ENTRY(hook_desc) hd_list; 142 void (*hd_fn)(void *); 143 void *hd_arg; 144 }; 145 TAILQ_HEAD(hook_desc_head, hook_desc); 146 #endif 147 148 #ifdef _KERNEL 149 150 struct pfi_dynaddr { 151 struct pf_addr pfid_addr4; 152 struct pf_addr pfid_mask4; 153 struct pf_addr pfid_addr6; 154 struct pf_addr pfid_mask6; 155 struct pfr_ktable *pfid_kt; 156 struct pfi_kif *pfid_kif; 157 void *pfid_hook_cookie; 158 int pfid_net; /* optional mask, or 128 */ 159 int pfid_acnt4; /* address count, IPv4 */ 160 int pfid_acnt6; /* address count, IPv6 */ 161 sa_family_t pfid_af; /* rule address family */ 162 u_int8_t pfid_iflags; /* PFI_AFLAG_* */ 163 }; 164 165 /* 166 * Address manipulation macros 167 */ 168 169 #ifdef INET 170 #ifndef INET6 171 #define PF_INET_ONLY 172 #endif /* ! INET6 */ 173 #endif /* INET */ 174 175 #ifdef INET6 176 #ifndef INET 177 #define PF_INET6_ONLY 178 #endif /* ! INET */ 179 #endif /* INET6 */ 180 181 #ifdef INET 182 #ifdef INET6 183 #define PF_INET_INET6 184 #endif /* INET6 */ 185 #endif /* INET */ 186 187 #else 188 189 #define PF_INET_INET6 190 191 #endif /* _KERNEL */ 192 193 /* Both IPv4 and IPv6 */ 194 #ifdef PF_INET_INET6 195 196 #define PF_AEQ(a, b, c) \ 197 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \ 198 ((a)->addr32[3] == (b)->addr32[3] && \ 199 (a)->addr32[2] == (b)->addr32[2] && \ 200 (a)->addr32[1] == (b)->addr32[1] && \ 201 (a)->addr32[0] == (b)->addr32[0])) \ 202 203 #define PF_ANEQ(a, b, c) \ 204 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \ 205 ((a)->addr32[3] != (b)->addr32[3] || \ 206 (a)->addr32[2] != (b)->addr32[2] || \ 207 (a)->addr32[1] != (b)->addr32[1] || \ 208 (a)->addr32[0] != (b)->addr32[0])) \ 209 210 #define PF_AZERO(a, c) \ 211 ((c == AF_INET && !(a)->addr32[0]) || \ 212 (!(a)->addr32[0] && !(a)->addr32[1] && \ 213 !(a)->addr32[2] && !(a)->addr32[3] )) \ 214 215 #define PF_MATCHA(n, a, m, b, f) \ 216 pf_match_addr(n, a, m, b, f) 217 218 #define PF_ACPY(a, b, f) \ 219 pf_addrcpy(a, b, f) 220 221 #define PF_AINC(a, f) \ 222 pf_addr_inc(a, f) 223 224 #define PF_POOLMASK(a, b, c, d, f) \ 225 pf_poolmask(a, b, c, d, f) 226 227 #else 228 229 /* Just IPv6 */ 230 231 #ifdef PF_INET6_ONLY 232 233 #define PF_AEQ(a, b, c) \ 234 ((a)->addr32[3] == (b)->addr32[3] && \ 235 (a)->addr32[2] == (b)->addr32[2] && \ 236 (a)->addr32[1] == (b)->addr32[1] && \ 237 (a)->addr32[0] == (b)->addr32[0]) \ 238 239 #define PF_ANEQ(a, b, c) \ 240 ((a)->addr32[3] != (b)->addr32[3] || \ 241 (a)->addr32[2] != (b)->addr32[2] || \ 242 (a)->addr32[1] != (b)->addr32[1] || \ 243 (a)->addr32[0] != (b)->addr32[0]) \ 244 245 #define PF_AZERO(a, c) \ 246 (!(a)->addr32[0] && \ 247 !(a)->addr32[1] && \ 248 !(a)->addr32[2] && \ 249 !(a)->addr32[3] ) \ 250 251 #define PF_MATCHA(n, a, m, b, f) \ 252 pf_match_addr(n, a, m, b, f) 253 254 #define PF_ACPY(a, b, f) \ 255 pf_addrcpy(a, b, f) 256 257 #define PF_AINC(a, f) \ 258 pf_addr_inc(a, f) 259 260 #define PF_POOLMASK(a, b, c, d, f) \ 261 pf_poolmask(a, b, c, d, f) 262 263 #else 264 265 /* Just IPv4 */ 266 #ifdef PF_INET_ONLY 267 268 #define PF_AEQ(a, b, c) \ 269 ((a)->addr32[0] == (b)->addr32[0]) 270 271 #define PF_ANEQ(a, b, c) \ 272 ((a)->addr32[0] != (b)->addr32[0]) 273 274 #define PF_AZERO(a, c) \ 275 (!(a)->addr32[0]) 276 277 #define PF_MATCHA(n, a, m, b, f) \ 278 pf_match_addr(n, a, m, b, f) 279 280 #define PF_ACPY(a, b, f) \ 281 (a)->v4.s_addr = (b)->v4.s_addr 282 283 #define PF_AINC(a, f) \ 284 do { \ 285 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \ 286 } while (0) 287 288 #define PF_POOLMASK(a, b, c, d, f) \ 289 do { \ 290 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \ 291 (((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \ 292 } while (0) 293 294 #endif /* PF_INET_ONLY */ 295 #endif /* PF_INET6_ONLY */ 296 #endif /* PF_INET_INET6 */ 297 298 #define PF_MISMATCHAW(aw, x, af, neg) \ 299 ( \ 300 (((aw)->type == PF_ADDR_NOROUTE && \ 301 pf_routable((x), (af))) || \ 302 ((aw)->type == PF_ADDR_TABLE && \ 303 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \ 304 ((aw)->type == PF_ADDR_DYNIFTL && \ 305 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \ 306 ((aw)->type == PF_ADDR_ADDRMASK && \ 307 !PF_AZERO(&(aw)->v.a.mask, (af)) && \ 308 !PF_MATCHA(0, &(aw)->v.a.addr, \ 309 &(aw)->v.a.mask, (x), (af)))) != \ 310 (neg) \ 311 ) 312 313 struct pf_rule_uid { 314 uid_t uid[2]; 315 u_int8_t op; 316 }; 317 318 struct pf_rule_gid { 319 uid_t gid[2]; 320 u_int8_t op; 321 }; 322 323 struct pf_rule_addr { 324 struct pf_addr_wrap addr; 325 u_int16_t port[2]; 326 u_int8_t neg; 327 u_int8_t port_op; 328 }; 329 330 struct pf_pooladdr { 331 struct pf_addr_wrap addr; 332 TAILQ_ENTRY(pf_pooladdr) entries; 333 char ifname[IFNAMSIZ]; 334 struct pfi_kif *kif; 335 }; 336 337 TAILQ_HEAD(pf_palist, pf_pooladdr); 338 339 struct pf_poolhashkey { 340 union { 341 u_int8_t key8[16]; 342 u_int16_t key16[8]; 343 u_int32_t key32[4]; 344 } pfk; /* 128-bit hash key */ 345 #define key8 pfk.key8 346 #define key16 pfk.key16 347 #define key32 pfk.key32 348 }; 349 350 struct pf_pool { 351 struct pf_palist list; 352 struct pf_pooladdr *cur; 353 struct pf_poolhashkey key; 354 struct pf_addr counter; 355 int tblidx; 356 u_int16_t proxy_port[2]; 357 u_int8_t port_op; 358 u_int8_t opts; 359 }; 360 361 362 /* A packed Operating System description for fingerprinting */ 363 typedef u_int32_t pf_osfp_t; 364 #define PF_OSFP_ANY ((pf_osfp_t)0) 365 #define PF_OSFP_UNKNOWN ((pf_osfp_t)-1) 366 #define PF_OSFP_NOMATCH ((pf_osfp_t)-2) 367 368 struct pf_osfp_entry { 369 SLIST_ENTRY(pf_osfp_entry) fp_entry; 370 pf_osfp_t fp_os; 371 int fp_enflags; 372 #define PF_OSFP_EXPANDED 0x001 /* expanded entry */ 373 #define PF_OSFP_GENERIC 0x002 /* generic signature */ 374 #define PF_OSFP_NODETAIL 0x004 /* no p0f details */ 375 #define PF_OSFP_LEN 32 376 char fp_class_nm[PF_OSFP_LEN]; 377 char fp_version_nm[PF_OSFP_LEN]; 378 char fp_subtype_nm[PF_OSFP_LEN]; 379 }; 380 #define PF_OSFP_ENTRY_EQ(a, b) \ 381 ((a)->fp_os == (b)->fp_os && \ 382 memcmp((a)->fp_class_nm, (b)->fp_class_nm, PF_OSFP_LEN) == 0 && \ 383 memcmp((a)->fp_version_nm, (b)->fp_version_nm, PF_OSFP_LEN) == 0 && \ 384 memcmp((a)->fp_subtype_nm, (b)->fp_subtype_nm, PF_OSFP_LEN) == 0) 385 386 /* handle pf_osfp_t packing */ 387 #define _FP_RESERVED_BIT 1 /* For the special negative #defines */ 388 #define _FP_UNUSED_BITS 1 389 #define _FP_CLASS_BITS 10 /* OS Class (Windows, Linux) */ 390 #define _FP_VERSION_BITS 10 /* OS version (95, 98, NT, 2.4.54, 3.2) */ 391 #define _FP_SUBTYPE_BITS 10 /* patch level (NT SP4, SP3, ECN patch) */ 392 #define PF_OSFP_UNPACK(osfp, class, version, subtype) do { \ 393 (class) = ((osfp) >> (_FP_VERSION_BITS+_FP_SUBTYPE_BITS)) & \ 394 ((1 << _FP_CLASS_BITS) - 1); \ 395 (version) = ((osfp) >> _FP_SUBTYPE_BITS) & \ 396 ((1 << _FP_VERSION_BITS) - 1);\ 397 (subtype) = (osfp) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 398 } while(0) 399 #define PF_OSFP_PACK(osfp, class, version, subtype) do { \ 400 (osfp) = ((class) & ((1 << _FP_CLASS_BITS) - 1)) << (_FP_VERSION_BITS \ 401 + _FP_SUBTYPE_BITS); \ 402 (osfp) |= ((version) & ((1 << _FP_VERSION_BITS) - 1)) << \ 403 _FP_SUBTYPE_BITS; \ 404 (osfp) |= (subtype) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 405 } while(0) 406 407 /* the fingerprint of an OSes TCP SYN packet */ 408 typedef u_int64_t pf_tcpopts_t; 409 struct pf_os_fingerprint { 410 SLIST_HEAD(pf_osfp_enlist, pf_osfp_entry) fp_oses; /* list of matches */ 411 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 412 u_int16_t fp_wsize; /* TCP window size */ 413 u_int16_t fp_psize; /* ip->ip_len */ 414 u_int16_t fp_mss; /* TCP MSS */ 415 u_int16_t fp_flags; 416 #define PF_OSFP_WSIZE_MOD 0x0001 /* Window modulus */ 417 #define PF_OSFP_WSIZE_DC 0x0002 /* Window don't care */ 418 #define PF_OSFP_WSIZE_MSS 0x0004 /* Window multiple of MSS */ 419 #define PF_OSFP_WSIZE_MTU 0x0008 /* Window multiple of MTU */ 420 #define PF_OSFP_PSIZE_MOD 0x0010 /* packet size modulus */ 421 #define PF_OSFP_PSIZE_DC 0x0020 /* packet size don't care */ 422 #define PF_OSFP_WSCALE 0x0040 /* TCP window scaling */ 423 #define PF_OSFP_WSCALE_MOD 0x0080 /* TCP window scale modulus */ 424 #define PF_OSFP_WSCALE_DC 0x0100 /* TCP window scale dont-care */ 425 #define PF_OSFP_MSS 0x0200 /* TCP MSS */ 426 #define PF_OSFP_MSS_MOD 0x0400 /* TCP MSS modulus */ 427 #define PF_OSFP_MSS_DC 0x0800 /* TCP MSS dont-care */ 428 #define PF_OSFP_DF 0x1000 /* IPv4 don't fragment bit */ 429 #define PF_OSFP_TS0 0x2000 /* Zero timestamp */ 430 u_int8_t fp_optcnt; /* TCP option count */ 431 u_int8_t fp_wscale; /* TCP window scaling */ 432 u_int8_t fp_ttl; /* IPv4 TTL */ 433 #define PF_OSFP_MAXTTL_OFFSET 40 434 /* TCP options packing */ 435 #define PF_OSFP_TCPOPT_NOP 0x0 /* TCP NOP option */ 436 #define PF_OSFP_TCPOPT_WSCALE 0x1 /* TCP window scaling option */ 437 #define PF_OSFP_TCPOPT_MSS 0x2 /* TCP max segment size opt */ 438 #define PF_OSFP_TCPOPT_SACK 0x3 /* TCP SACK OK option */ 439 #define PF_OSFP_TCPOPT_TS 0x4 /* TCP timestamp option */ 440 #define PF_OSFP_TCPOPT_BITS 3 /* bits used by each option */ 441 #define PF_OSFP_MAX_OPTS \ 442 (sizeof(((struct pf_os_fingerprint *)0)->fp_tcpopts) * 8) \ 443 / PF_OSFP_TCPOPT_BITS 444 445 SLIST_ENTRY(pf_os_fingerprint) fp_next; 446 }; 447 448 struct pf_osfp_ioctl { 449 struct pf_osfp_entry fp_os; 450 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 451 u_int16_t fp_wsize; /* TCP window size */ 452 u_int16_t fp_psize; /* ip->ip_len */ 453 u_int16_t fp_mss; /* TCP MSS */ 454 u_int16_t fp_flags; 455 u_int8_t fp_optcnt; /* TCP option count */ 456 u_int8_t fp_wscale; /* TCP window scaling */ 457 u_int8_t fp_ttl; /* IPv4 TTL */ 458 459 int fp_getnum; /* DIOCOSFPGET number */ 460 }; 461 462 463 union pf_rule_ptr { 464 struct pf_rule *ptr; 465 u_int32_t nr; 466 }; 467 468 #define PF_ANCHOR_NAME_SIZE 64 469 470 struct pf_rule { 471 struct pf_rule_addr src; 472 struct pf_rule_addr dst; 473 #define PF_SKIP_IFP 0 474 #define PF_SKIP_DIR 1 475 #define PF_SKIP_AF 2 476 #define PF_SKIP_PROTO 3 477 #define PF_SKIP_SRC_ADDR 4 478 #define PF_SKIP_SRC_PORT 5 479 #define PF_SKIP_DST_ADDR 6 480 #define PF_SKIP_DST_PORT 7 481 #define PF_SKIP_COUNT 8 482 union pf_rule_ptr skip[PF_SKIP_COUNT]; 483 #define PF_RULE_LABEL_SIZE 64 484 char label[PF_RULE_LABEL_SIZE]; 485 #define PF_QNAME_SIZE 16 486 char ifname[IFNAMSIZ]; 487 char qname[PF_QNAME_SIZE]; 488 char pqname[PF_QNAME_SIZE]; 489 #define PF_TAG_NAME_SIZE 16 490 char tagname[PF_TAG_NAME_SIZE]; 491 char match_tagname[PF_TAG_NAME_SIZE]; 492 493 TAILQ_ENTRY(pf_rule) entries; 494 struct pf_pool rpool; 495 496 u_int64_t evaluations; 497 u_int64_t packets; 498 u_int64_t bytes; 499 500 struct pfi_kif *kif; 501 struct pf_anchor *anchor; 502 503 pf_osfp_t os_fingerprint; 504 505 u_int32_t timeout[PFTM_MAX]; 506 u_int32_t states; 507 u_int32_t max_states; 508 u_int32_t src_nodes; 509 u_int32_t max_src_nodes; 510 u_int32_t max_src_states; 511 u_int32_t qid; 512 u_int32_t pqid; 513 u_int32_t rt_listid; 514 u_int32_t nr; 515 u_int32_t prob; 516 517 u_int16_t return_icmp; 518 u_int16_t return_icmp6; 519 u_int16_t max_mss; 520 u_int16_t tag; 521 u_int16_t match_tag; 522 523 struct pf_rule_uid uid; 524 struct pf_rule_gid gid; 525 526 u_int32_t rule_flag; 527 u_int8_t action; 528 u_int8_t direction; 529 u_int8_t log; 530 u_int8_t quick; 531 u_int8_t ifnot; 532 u_int8_t match_tag_not; 533 u_int8_t natpass; 534 535 #define PF_STATE_NORMAL 0x1 536 #define PF_STATE_MODULATE 0x2 537 #define PF_STATE_SYNPROXY 0x3 538 u_int8_t keep_state; 539 sa_family_t af; 540 u_int8_t proto; 541 u_int8_t type; 542 u_int8_t code; 543 u_int8_t flags; 544 u_int8_t flagset; 545 u_int8_t min_ttl; 546 u_int8_t allow_opts; 547 u_int8_t rt; 548 u_int8_t return_ttl; 549 u_int8_t tos; 550 u_int8_t anchor_relative; 551 u_int8_t anchor_wildcard; 552 }; 553 554 /* rule flags */ 555 #define PFRULE_DROP 0x0000 556 #define PFRULE_RETURNRST 0x0001 557 #define PFRULE_FRAGMENT 0x0002 558 #define PFRULE_RETURNICMP 0x0004 559 #define PFRULE_RETURN 0x0008 560 #define PFRULE_NOSYNC 0x0010 561 #define PFRULE_SRCTRACK 0x0020 /* track source states */ 562 #define PFRULE_RULESRCTRACK 0x0040 /* per rule */ 563 564 /* scrub flags */ 565 #define PFRULE_NODF 0x0100 566 #define PFRULE_FRAGCROP 0x0200 /* non-buffering frag cache */ 567 #define PFRULE_FRAGDROP 0x0400 /* drop funny fragments */ 568 #define PFRULE_RANDOMID 0x0800 569 #define PFRULE_REASSEMBLE_TCP 0x1000 570 571 /* rule flags again */ 572 #define PFRULE_IFBOUND 0x00010000 /* if-bound */ 573 #define PFRULE_GRBOUND 0x00020000 /* group-bound */ 574 575 #define PFSTATE_HIWAT 10000 /* default state table size */ 576 577 struct pf_src_node { 578 RB_ENTRY(pf_src_node) entry; 579 struct pf_addr addr; 580 struct pf_addr raddr; 581 union pf_rule_ptr rule; 582 struct pfi_kif *kif; 583 u_int32_t bytes; 584 u_int32_t packets; 585 u_int32_t states; 586 u_int32_t creation; 587 u_int32_t expire; 588 sa_family_t af; 589 u_int8_t ruletype; 590 }; 591 592 #define PFSNODE_HIWAT 10000 /* default source node table size */ 593 594 struct pf_state_scrub { 595 struct timeval pfss_last; /* time received last packet */ 596 u_int32_t pfss_tsecr; /* last echoed timestamp */ 597 u_int32_t pfss_tsval; /* largest timestamp */ 598 u_int32_t pfss_tsval0; /* original timestamp */ 599 u_int16_t pfss_flags; 600 #define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */ 601 #define PFSS_PAWS 0x0010 /* stricter PAWS checks */ 602 #define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */ 603 #define PFSS_DATA_TS 0x0040 /* timestamp on data packets */ 604 #define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */ 605 u_int8_t pfss_ttl; /* stashed TTL */ 606 u_int8_t pad; 607 u_int32_t pfss_ts_mod; /* timestamp modulation */ 608 }; 609 610 struct pf_state_host { 611 struct pf_addr addr; 612 u_int16_t port; 613 u_int16_t pad; 614 }; 615 616 struct pf_state_peer { 617 u_int32_t seqlo; /* Max sequence number sent */ 618 u_int32_t seqhi; /* Max the other end ACKd + win */ 619 u_int32_t seqdiff; /* Sequence number modulator */ 620 u_int16_t max_win; /* largest window (pre scaling) */ 621 u_int8_t state; /* active state level */ 622 u_int8_t wscale; /* window scaling factor */ 623 u_int16_t mss; /* Maximum segment size option */ 624 struct pf_state_scrub *scrub; /* state is scrubbed */ 625 }; 626 627 TAILQ_HEAD(pf_state_queue, pf_state); 628 629 struct pf_state { 630 u_int64_t id; 631 union { 632 struct { 633 RB_ENTRY(pf_state) entry_lan_ext; 634 RB_ENTRY(pf_state) entry_ext_gwy; 635 RB_ENTRY(pf_state) entry_id; 636 TAILQ_ENTRY(pf_state) entry_updates; 637 struct pfi_kif *kif; 638 } s; 639 char ifname[IFNAMSIZ]; 640 } u; 641 struct pf_state_host lan; 642 struct pf_state_host gwy; 643 struct pf_state_host ext; 644 struct pf_state_peer src; 645 struct pf_state_peer dst; 646 union pf_rule_ptr rule; 647 union pf_rule_ptr anchor; 648 union pf_rule_ptr nat_rule; 649 struct pf_addr rt_addr; 650 struct pfi_kif *rt_kif; 651 struct pf_src_node *src_node; 652 struct pf_src_node *nat_src_node; 653 u_int32_t creation; 654 u_int32_t expire; 655 u_int32_t pfsync_time; 656 u_int32_t packets[2]; 657 u_int32_t bytes[2]; 658 u_int32_t creatorid; 659 sa_family_t af; 660 u_int8_t proto; 661 u_int8_t direction; 662 u_int8_t log; 663 u_int8_t allow_opts; 664 u_int8_t timeout; 665 u_int8_t sync_flags; 666 #define PFSTATE_NOSYNC 0x01 667 #define PFSTATE_FROMSYNC 0x02 668 u_int8_t pad; 669 }; 670 671 TAILQ_HEAD(pf_rulequeue, pf_rule); 672 673 struct pf_anchor; 674 675 struct pf_ruleset { 676 struct { 677 struct pf_rulequeue queues[2]; 678 struct { 679 struct pf_rulequeue *ptr; 680 u_int32_t ticket; 681 int open; 682 } active, inactive; 683 } rules[PF_RULESET_MAX]; 684 struct pf_anchor *anchor; 685 u_int32_t tticket; 686 int tables; 687 int topen; 688 }; 689 690 RB_HEAD(pf_anchor_global, pf_anchor); 691 RB_HEAD(pf_anchor_node, pf_anchor); 692 struct pf_anchor { 693 RB_ENTRY(pf_anchor) entry_global; 694 RB_ENTRY(pf_anchor) entry_node; 695 struct pf_anchor *parent; 696 struct pf_anchor_node children; 697 char name[PF_ANCHOR_NAME_SIZE]; 698 char path[MAXPATHLEN]; 699 struct pf_ruleset ruleset; 700 int refcnt; /* anchor rules */ 701 }; 702 RB_PROTOTYPE(pf_anchor_global, pf_anchor, entry_global, pf_anchor_compare); 703 RB_PROTOTYPE(pf_anchor_node, pf_anchor, entry_node, pf_anchor_compare); 704 705 #define PF_RESERVED_ANCHOR "_pf" 706 707 #define PFR_TFLAG_PERSIST 0x00000001 708 #define PFR_TFLAG_CONST 0x00000002 709 #define PFR_TFLAG_ACTIVE 0x00000004 710 #define PFR_TFLAG_INACTIVE 0x00000008 711 #define PFR_TFLAG_REFERENCED 0x00000010 712 #define PFR_TFLAG_REFDANCHOR 0x00000020 713 #define PFR_TFLAG_USRMASK 0x00000003 714 #define PFR_TFLAG_SETMASK 0x0000003C 715 #define PFR_TFLAG_ALLMASK 0x0000003F 716 717 struct pfr_table { 718 char pfrt_anchor[MAXPATHLEN]; 719 char pfrt_name[PF_TABLE_NAME_SIZE]; 720 u_int32_t pfrt_flags; 721 u_int8_t pfrt_fback; 722 }; 723 724 enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED, 725 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE, 726 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_MAX }; 727 728 struct pfr_addr { 729 union { 730 struct in_addr _pfra_ip4addr; 731 struct in6_addr _pfra_ip6addr; 732 } pfra_u; 733 u_int8_t pfra_af; 734 u_int8_t pfra_net; 735 u_int8_t pfra_not; 736 u_int8_t pfra_fback; 737 }; 738 #define pfra_ip4addr pfra_u._pfra_ip4addr 739 #define pfra_ip6addr pfra_u._pfra_ip6addr 740 741 enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX }; 742 enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX }; 743 #define PFR_OP_XPASS PFR_OP_ADDR_MAX 744 745 struct pfr_astats { 746 struct pfr_addr pfras_a; 747 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 748 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 749 long pfras_tzero; 750 }; 751 752 enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX }; 753 754 struct pfr_tstats { 755 struct pfr_table pfrts_t; 756 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 757 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 758 u_int64_t pfrts_match; 759 u_int64_t pfrts_nomatch; 760 long pfrts_tzero; 761 int pfrts_cnt; 762 int pfrts_refcnt[PFR_REFCNT_MAX]; 763 }; 764 #define pfrts_name pfrts_t.pfrt_name 765 #define pfrts_flags pfrts_t.pfrt_flags 766 767 SLIST_HEAD(pfr_kentryworkq, pfr_kentry); 768 struct pfr_kentry { 769 struct radix_node pfrke_node[2]; 770 union sockaddr_union pfrke_sa; 771 u_int64_t pfrke_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 772 u_int64_t pfrke_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 773 SLIST_ENTRY(pfr_kentry) pfrke_workq; 774 long pfrke_tzero; 775 u_int8_t pfrke_af; 776 u_int8_t pfrke_net; 777 u_int8_t pfrke_not; 778 u_int8_t pfrke_mark; 779 }; 780 781 SLIST_HEAD(pfr_ktableworkq, pfr_ktable); 782 RB_HEAD(pfr_ktablehead, pfr_ktable); 783 struct pfr_ktable { 784 struct pfr_tstats pfrkt_ts; 785 RB_ENTRY(pfr_ktable) pfrkt_tree; 786 SLIST_ENTRY(pfr_ktable) pfrkt_workq; 787 struct radix_node_head *pfrkt_ip4; 788 struct radix_node_head *pfrkt_ip6; 789 struct pfr_ktable *pfrkt_shadow; 790 struct pfr_ktable *pfrkt_root; 791 struct pf_ruleset *pfrkt_rs; 792 long pfrkt_larg; 793 int pfrkt_nflags; 794 }; 795 #define pfrkt_t pfrkt_ts.pfrts_t 796 #define pfrkt_name pfrkt_t.pfrt_name 797 #define pfrkt_anchor pfrkt_t.pfrt_anchor 798 #define pfrkt_ruleset pfrkt_t.pfrt_ruleset 799 #define pfrkt_flags pfrkt_t.pfrt_flags 800 #define pfrkt_cnt pfrkt_ts.pfrts_cnt 801 #define pfrkt_refcnt pfrkt_ts.pfrts_refcnt 802 #define pfrkt_packets pfrkt_ts.pfrts_packets 803 #define pfrkt_bytes pfrkt_ts.pfrts_bytes 804 #define pfrkt_match pfrkt_ts.pfrts_match 805 #define pfrkt_nomatch pfrkt_ts.pfrts_nomatch 806 #define pfrkt_tzero pfrkt_ts.pfrts_tzero 807 808 RB_HEAD(pf_state_tree_lan_ext, pf_state); 809 RB_PROTOTYPE(pf_state_tree_lan_ext, pf_state, 810 u.s.entry_lan_ext, pf_state_compare_lan_ext) 811 812 RB_HEAD(pf_state_tree_ext_gwy, pf_state); 813 RB_PROTOTYPE(pf_state_tree_ext_gwy, pf_state, 814 u.s.entry_ext_gwy, pf_state_compare_ext_gwy) 815 816 struct pfi_if { 817 char pfif_name[IFNAMSIZ]; 818 u_int64_t pfif_packets[2][2][2]; 819 u_int64_t pfif_bytes[2][2][2]; 820 u_int64_t pfif_addcnt; 821 u_int64_t pfif_delcnt; 822 long pfif_tzero; 823 int pfif_states; 824 int pfif_rules; 825 int pfif_flags; 826 }; 827 828 TAILQ_HEAD(pfi_grouphead, pfi_kif); 829 TAILQ_HEAD(pfi_statehead, pfi_kif); 830 RB_HEAD(pfi_ifhead, pfi_kif); 831 struct pfi_kif { 832 struct pfi_if pfik_if; 833 RB_ENTRY(pfi_kif) pfik_tree; 834 struct pf_state_tree_lan_ext pfik_lan_ext; 835 struct pf_state_tree_ext_gwy pfik_ext_gwy; 836 struct pfi_grouphead pfik_grouphead; 837 TAILQ_ENTRY(pfi_kif) pfik_instances; 838 TAILQ_ENTRY(pfi_kif) pfik_w_states; 839 struct hook_desc_head *pfik_ah_head; 840 void *pfik_ah_cookie; 841 struct pfi_kif *pfik_parent; 842 struct ifnet *pfik_ifp; 843 int pfik_states; 844 int pfik_rules; 845 #ifdef __NetBSD__ 846 struct hook_desc_head pfik_ifaddrhooks; 847 #endif 848 }; 849 #define pfik_name pfik_if.pfif_name 850 #define pfik_packets pfik_if.pfif_packets 851 #define pfik_bytes pfik_if.pfif_bytes 852 #define pfik_tzero pfik_if.pfif_tzero 853 #define pfik_flags pfik_if.pfif_flags 854 #define pfik_addcnt pfik_if.pfif_addcnt 855 #define pfik_delcnt pfik_if.pfif_delcnt 856 #define pfik_states pfik_if.pfif_states 857 #define pfik_rules pfik_if.pfif_rules 858 859 #define PFI_IFLAG_GROUP 0x0001 /* group of interfaces */ 860 #define PFI_IFLAG_INSTANCE 0x0002 /* single instance */ 861 #define PFI_IFLAG_CLONABLE 0x0010 /* clonable group */ 862 #define PFI_IFLAG_DYNAMIC 0x0020 /* dynamic group */ 863 #define PFI_IFLAG_ATTACHED 0x0040 /* interface attached */ 864 865 struct pf_pdesc { 866 u_int64_t tot_len; /* Make Mickey money */ 867 union { 868 struct tcphdr *tcp; 869 struct udphdr *udp; 870 struct icmp *icmp; 871 #ifdef INET6 872 struct icmp6_hdr *icmp6; 873 #endif /* INET6 */ 874 void *any; 875 } hdr; 876 struct pf_addr baddr; /* address before translation */ 877 struct pf_addr naddr; /* address after translation */ 878 struct pf_rule *nat_rule; /* nat/rdr rule applied to packet */ 879 struct pf_addr *src; 880 struct pf_addr *dst; 881 struct ether_header 882 *eh; 883 u_int16_t *ip_sum; 884 u_int32_t p_len; /* total length of payload */ 885 u_int16_t flags; /* Let SCRUB trigger behavior in 886 * state code. Easier than tags */ 887 #define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */ 888 #define PFDESC_IP_REAS 0x0002 /* IP frags would've been reassembled */ 889 sa_family_t af; 890 u_int8_t proto; 891 u_int8_t tos; 892 }; 893 894 /* flags for RDR options */ 895 #define PF_DPORT_RANGE 0x01 /* Dest port uses range */ 896 #define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */ 897 898 /* Reasons code for passing/dropping a packet */ 899 #define PFRES_MATCH 0 /* Explicit match of a rule */ 900 #define PFRES_BADOFF 1 /* Bad offset for pull_hdr */ 901 #define PFRES_FRAG 2 /* Dropping following fragment */ 902 #define PFRES_SHORT 3 /* Dropping short packet */ 903 #define PFRES_NORM 4 /* Dropping by normalizer */ 904 #define PFRES_MEMORY 5 /* Dropped due to lacking mem */ 905 #define PFRES_TS 6 /* Bad TCP Timestamp (RFC1323) */ 906 #define PFRES_MAX 7 /* total+1 */ 907 908 #define PFRES_NAMES { \ 909 "match", \ 910 "bad-offset", \ 911 "fragment", \ 912 "short", \ 913 "normalize", \ 914 "memory", \ 915 "bad-timestamp", \ 916 NULL \ 917 } 918 919 /* UDP state enumeration */ 920 #define PFUDPS_NO_TRAFFIC 0 921 #define PFUDPS_SINGLE 1 922 #define PFUDPS_MULTIPLE 2 923 924 #define PFUDPS_NSTATES 3 /* number of state levels */ 925 926 #define PFUDPS_NAMES { \ 927 "NO_TRAFFIC", \ 928 "SINGLE", \ 929 "MULTIPLE", \ 930 NULL \ 931 } 932 933 /* Other protocol state enumeration */ 934 #define PFOTHERS_NO_TRAFFIC 0 935 #define PFOTHERS_SINGLE 1 936 #define PFOTHERS_MULTIPLE 2 937 938 #define PFOTHERS_NSTATES 3 /* number of state levels */ 939 940 #define PFOTHERS_NAMES { \ 941 "NO_TRAFFIC", \ 942 "SINGLE", \ 943 "MULTIPLE", \ 944 NULL \ 945 } 946 947 #define FCNT_STATE_SEARCH 0 948 #define FCNT_STATE_INSERT 1 949 #define FCNT_STATE_REMOVALS 2 950 #define FCNT_MAX 3 951 952 #define SCNT_SRC_NODE_SEARCH 0 953 #define SCNT_SRC_NODE_INSERT 1 954 #define SCNT_SRC_NODE_REMOVALS 2 955 #define SCNT_MAX 3 956 957 #define ACTION_SET(a, x) \ 958 do { \ 959 if ((a) != NULL) \ 960 *(a) = (x); \ 961 } while (0) 962 963 #define REASON_SET(a, x) \ 964 do { \ 965 if ((a) != NULL) \ 966 *(a) = (x); \ 967 if (x < PFRES_MAX) \ 968 pf_status.counters[x]++; \ 969 } while (0) 970 971 struct pf_status { 972 u_int64_t counters[PFRES_MAX]; 973 u_int64_t fcounters[FCNT_MAX]; 974 u_int64_t scounters[SCNT_MAX]; 975 u_int64_t pcounters[2][2][3]; 976 u_int64_t bcounters[2][2]; 977 u_int64_t stateid; 978 u_int32_t running; 979 u_int32_t states; 980 u_int32_t src_nodes; 981 u_int32_t since; 982 u_int32_t debug; 983 u_int32_t hostid; 984 char ifname[IFNAMSIZ]; 985 }; 986 987 struct cbq_opts { 988 u_int minburst; 989 u_int maxburst; 990 u_int pktsize; 991 u_int maxpktsize; 992 u_int ns_per_byte; 993 u_int maxidle; 994 int minidle; 995 u_int offtime; 996 int flags; 997 }; 998 999 struct priq_opts { 1000 int flags; 1001 }; 1002 1003 struct hfsc_opts { 1004 /* real-time service curve */ 1005 u_int rtsc_m1; /* slope of the 1st segment in bps */ 1006 u_int rtsc_d; /* the x-projection of m1 in msec */ 1007 u_int rtsc_m2; /* slope of the 2nd segment in bps */ 1008 /* link-sharing service curve */ 1009 u_int lssc_m1; 1010 u_int lssc_d; 1011 u_int lssc_m2; 1012 /* upper-limit service curve */ 1013 u_int ulsc_m1; 1014 u_int ulsc_d; 1015 u_int ulsc_m2; 1016 int flags; 1017 }; 1018 1019 struct pf_altq { 1020 char ifname[IFNAMSIZ]; 1021 1022 void *altq_disc; /* discipline-specific state */ 1023 TAILQ_ENTRY(pf_altq) entries; 1024 1025 /* scheduler spec */ 1026 u_int8_t scheduler; /* scheduler type */ 1027 u_int16_t tbrsize; /* tokenbucket regulator size */ 1028 u_int32_t ifbandwidth; /* interface bandwidth */ 1029 1030 /* queue spec */ 1031 char qname[PF_QNAME_SIZE]; /* queue name */ 1032 char parent[PF_QNAME_SIZE]; /* parent name */ 1033 u_int32_t parent_qid; /* parent queue id */ 1034 u_int32_t bandwidth; /* queue bandwidth */ 1035 u_int8_t priority; /* priority */ 1036 u_int16_t qlimit; /* queue size limit */ 1037 u_int16_t flags; /* misc flags */ 1038 union { 1039 struct cbq_opts cbq_opts; 1040 struct priq_opts priq_opts; 1041 struct hfsc_opts hfsc_opts; 1042 } pq_u; 1043 1044 u_int32_t qid; /* return value */ 1045 }; 1046 1047 struct pf_tag { 1048 u_int16_t tag; /* tag id */ 1049 }; 1050 1051 struct pf_tagname { 1052 TAILQ_ENTRY(pf_tagname) entries; 1053 char name[PF_TAG_NAME_SIZE]; 1054 u_int16_t tag; 1055 int ref; 1056 }; 1057 1058 #define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */ 1059 #define PFFRAG_FRAG_HIWAT 1000 /* Number of fragmented packets */ 1060 #define PFFRAG_FRCENT_HIWAT 50000 /* Number of fragment cache entries */ 1061 #define PFFRAG_FRCACHE_HIWAT 10000 /* Number of fragment descriptors */ 1062 1063 /* 1064 * ioctl parameter structures 1065 */ 1066 1067 struct pfioc_pooladdr { 1068 u_int32_t action; 1069 u_int32_t ticket; 1070 u_int32_t nr; 1071 u_int32_t r_num; 1072 u_int8_t r_action; 1073 u_int8_t r_last; 1074 u_int8_t af; 1075 char anchor[MAXPATHLEN]; 1076 struct pf_pooladdr addr; 1077 }; 1078 1079 struct pfioc_rule { 1080 u_int32_t action; 1081 u_int32_t ticket; 1082 u_int32_t pool_ticket; 1083 u_int32_t nr; 1084 char anchor[MAXPATHLEN]; 1085 char anchor_call[MAXPATHLEN]; 1086 struct pf_rule rule; 1087 }; 1088 1089 struct pfioc_natlook { 1090 struct pf_addr saddr; 1091 struct pf_addr daddr; 1092 struct pf_addr rsaddr; 1093 struct pf_addr rdaddr; 1094 u_int16_t sport; 1095 u_int16_t dport; 1096 u_int16_t rsport; 1097 u_int16_t rdport; 1098 sa_family_t af; 1099 u_int8_t proto; 1100 u_int8_t direction; 1101 }; 1102 1103 struct pfioc_state { 1104 u_int32_t nr; 1105 struct pf_state state; 1106 }; 1107 1108 struct pfioc_state_kill { 1109 /* XXX returns the number of states killed in psk_af */ 1110 sa_family_t psk_af; 1111 int psk_proto; 1112 struct pf_rule_addr psk_src; 1113 struct pf_rule_addr psk_dst; 1114 char psk_ifname[IFNAMSIZ]; 1115 }; 1116 1117 struct pfioc_states { 1118 int ps_len; 1119 union { 1120 caddr_t psu_buf; 1121 struct pf_state *psu_states; 1122 } ps_u; 1123 #define ps_buf ps_u.psu_buf 1124 #define ps_states ps_u.psu_states 1125 }; 1126 1127 struct pfioc_src_nodes { 1128 int psn_len; 1129 union { 1130 caddr_t psu_buf; 1131 struct pf_src_node *psu_src_nodes; 1132 } psn_u; 1133 #define psn_buf psn_u.psu_buf 1134 #define psn_src_nodes psn_u.psu_src_nodes 1135 }; 1136 1137 struct pfioc_if { 1138 char ifname[IFNAMSIZ]; 1139 }; 1140 1141 struct pfioc_tm { 1142 int timeout; 1143 int seconds; 1144 }; 1145 1146 struct pfioc_limit { 1147 int index; 1148 unsigned limit; 1149 }; 1150 1151 struct pfioc_altq { 1152 u_int32_t action; 1153 u_int32_t ticket; 1154 u_int32_t nr; 1155 struct pf_altq altq; 1156 }; 1157 1158 struct pfioc_qstats { 1159 u_int32_t ticket; 1160 u_int32_t nr; 1161 void *buf; 1162 int nbytes; 1163 u_int8_t scheduler; 1164 }; 1165 1166 struct pfioc_ruleset { 1167 u_int32_t nr; 1168 char path[MAXPATHLEN]; 1169 char name[PF_ANCHOR_NAME_SIZE]; 1170 }; 1171 1172 #define PF_RULESET_ALTQ (PF_RULESET_MAX) 1173 #define PF_RULESET_TABLE (PF_RULESET_MAX+1) 1174 struct pfioc_trans { 1175 int size; /* number of elements */ 1176 int esize; /* size of each element in bytes */ 1177 struct pfioc_trans_e { 1178 int rs_num; 1179 char anchor[MAXPATHLEN]; 1180 u_int32_t ticket; 1181 } *array; 1182 }; 1183 1184 #define PFR_FLAG_ATOMIC 0x00000001 1185 #define PFR_FLAG_DUMMY 0x00000002 1186 #define PFR_FLAG_FEEDBACK 0x00000004 1187 #define PFR_FLAG_CLSTATS 0x00000008 1188 #define PFR_FLAG_ADDRSTOO 0x00000010 1189 #define PFR_FLAG_REPLACE 0x00000020 1190 #define PFR_FLAG_ALLRSETS 0x00000040 1191 #define PFR_FLAG_ALLMASK 0x0000007F 1192 #ifdef _KERNEL 1193 #define PFR_FLAG_USERIOCTL 0x10000000 1194 #endif 1195 1196 struct pfioc_table { 1197 struct pfr_table pfrio_table; 1198 void *pfrio_buffer; 1199 int pfrio_esize; 1200 int pfrio_size; 1201 int pfrio_size2; 1202 int pfrio_nadd; 1203 int pfrio_ndel; 1204 int pfrio_nchange; 1205 int pfrio_flags; 1206 u_int32_t pfrio_ticket; 1207 }; 1208 #define pfrio_exists pfrio_nadd 1209 #define pfrio_nzero pfrio_nadd 1210 #define pfrio_nmatch pfrio_nadd 1211 #define pfrio_naddr pfrio_size2 1212 #define pfrio_setflag pfrio_size2 1213 #define pfrio_clrflag pfrio_nadd 1214 1215 1216 #define PFI_FLAG_GROUP 0x0001 /* gets groups of interfaces */ 1217 #define PFI_FLAG_INSTANCE 0x0002 /* gets single interfaces */ 1218 #define PFI_FLAG_ALLMASK 0x0003 1219 1220 struct pfioc_iface { 1221 char pfiio_name[IFNAMSIZ]; 1222 void *pfiio_buffer; 1223 int pfiio_esize; 1224 int pfiio_size; 1225 int pfiio_nzero; 1226 int pfiio_flags; 1227 }; 1228 1229 1230 /* 1231 * ioctl operations 1232 */ 1233 1234 #define DIOCSTART _IO ('D', 1) 1235 #define DIOCSTOP _IO ('D', 2) 1236 #define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule) 1237 #define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule) 1238 #define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule) 1239 /* XXX cut 8 - 17 */ 1240 #define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill) 1241 #define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state) 1242 #define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if) 1243 #define DIOCGETSTATUS _IOWR('D', 21, struct pf_status) 1244 #define DIOCCLRSTATUS _IO ('D', 22) 1245 #define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook) 1246 #define DIOCSETDEBUG _IOWR('D', 24, u_int32_t) 1247 #define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states) 1248 #define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule) 1249 /* XXX cut 26 - 28 */ 1250 #define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm) 1251 #define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm) 1252 #define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state) 1253 #define DIOCCLRRULECTRS _IO ('D', 38) 1254 #define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit) 1255 #define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit) 1256 #define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill) 1257 #define DIOCSTARTALTQ _IO ('D', 42) 1258 #define DIOCSTOPALTQ _IO ('D', 43) 1259 #define DIOCADDALTQ _IOWR('D', 45, struct pfioc_altq) 1260 #define DIOCGETALTQS _IOWR('D', 47, struct pfioc_altq) 1261 #define DIOCGETALTQ _IOWR('D', 48, struct pfioc_altq) 1262 #define DIOCCHANGEALTQ _IOWR('D', 49, struct pfioc_altq) 1263 #define DIOCGETQSTATS _IOWR('D', 50, struct pfioc_qstats) 1264 #define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr) 1265 #define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr) 1266 #define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr) 1267 #define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr) 1268 #define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr) 1269 /* XXX cut 55 - 57 */ 1270 #define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset) 1271 #define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset) 1272 #define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table) 1273 #define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table) 1274 #define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table) 1275 #define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table) 1276 #define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table) 1277 #define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table) 1278 #define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table) 1279 #define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table) 1280 #define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table) 1281 #define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table) 1282 #define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table) 1283 #define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table) 1284 #define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table) 1285 #define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table) 1286 #define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table) 1287 #define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table) 1288 #define DIOCOSFPFLUSH _IO('D', 78) 1289 #define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl) 1290 #define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl) 1291 #define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans) 1292 #define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans) 1293 #define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans) 1294 #define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes) 1295 #define DIOCCLRSRCNODES _IO('D', 85) 1296 #define DIOCSETHOSTID _IOWR('D', 86, u_int32_t) 1297 #define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface) 1298 #define DIOCICLRISTATS _IOWR('D', 88, struct pfioc_iface) 1299 1300 #ifdef _KERNEL 1301 RB_HEAD(pf_src_tree, pf_src_node); 1302 RB_PROTOTYPE(pf_src_tree, pf_src_node, entry, pf_src_compare); 1303 extern struct pf_src_tree tree_src_tracking; 1304 1305 RB_HEAD(pf_state_tree_id, pf_state); 1306 RB_PROTOTYPE(pf_state_tree_id, pf_state, 1307 entry_id, pf_state_compare_id); 1308 extern struct pf_state_tree_id tree_id; 1309 extern struct pf_state_queue state_updates; 1310 1311 extern struct pf_anchor_global pf_anchors; 1312 extern struct pf_ruleset pf_main_ruleset; 1313 TAILQ_HEAD(pf_poolqueue, pf_pool); 1314 extern struct pf_poolqueue pf_pools[2]; 1315 TAILQ_HEAD(pf_altqqueue, pf_altq); 1316 extern struct pf_altqqueue pf_altqs[2]; 1317 extern struct pf_palist pf_pabuf; 1318 extern struct pfi_kif **pfi_index2kif; 1319 1320 extern u_int32_t ticket_altqs_active; 1321 extern u_int32_t ticket_altqs_inactive; 1322 extern int altqs_inactive_open; 1323 extern u_int32_t ticket_pabuf; 1324 extern struct pf_altqqueue *pf_altqs_active; 1325 extern struct pf_altqqueue *pf_altqs_inactive; 1326 extern struct pf_poolqueue *pf_pools_active; 1327 extern struct pf_poolqueue *pf_pools_inactive; 1328 extern int pf_tbladdr_setup(struct pf_ruleset *, 1329 struct pf_addr_wrap *); 1330 extern void pf_tbladdr_remove(struct pf_addr_wrap *); 1331 extern void pf_tbladdr_copyout(struct pf_addr_wrap *); 1332 extern void pf_calc_skip_steps(struct pf_rulequeue *); 1333 extern struct pool pf_src_tree_pl, pf_rule_pl; 1334 extern struct pool pf_state_pl, pf_altq_pl, pf_pooladdr_pl; 1335 extern struct pool pf_state_scrub_pl; 1336 extern void pf_purge_timeout(void *); 1337 extern void pf_purge_expired_src_nodes(void); 1338 extern void pf_purge_expired_states(void); 1339 extern void pf_purge_expired_state(struct pf_state *); 1340 extern int pf_insert_state(struct pfi_kif *, 1341 struct pf_state *); 1342 extern int pf_insert_src_node(struct pf_src_node **, 1343 struct pf_rule *, struct pf_addr *, 1344 sa_family_t); 1345 void pf_src_tree_remove_state(struct pf_state *); 1346 extern struct pf_state *pf_find_state_byid(struct pf_state *); 1347 extern struct pf_state *pf_find_state_all(struct pf_state *key, 1348 u_int8_t tree, int *more); 1349 extern void pf_print_state(struct pf_state *); 1350 extern void pf_print_flags(u_int8_t); 1351 extern struct pf_anchor *pf_find_anchor(const char *); 1352 extern struct pf_ruleset *pf_find_ruleset(const char *); 1353 extern struct pf_ruleset *pf_find_or_create_ruleset(const char *); 1354 extern void pf_remove_if_empty_ruleset( 1355 struct pf_ruleset *); 1356 extern u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t, 1357 u_int8_t); 1358 1359 extern struct ifnet *sync_ifp; 1360 extern struct pf_rule pf_default_rule; 1361 extern void pf_addrcpy(struct pf_addr *, struct pf_addr *, 1362 u_int8_t); 1363 void pf_rm_rule(struct pf_rulequeue *, 1364 struct pf_rule *); 1365 1366 #ifdef INET 1367 int pf_test(int, struct ifnet *, struct mbuf **, struct ether_header *); 1368 #endif /* INET */ 1369 1370 #ifdef INET6 1371 int pf_test6(int, struct ifnet *, struct mbuf **, struct ether_header *); 1372 void pf_poolmask(struct pf_addr *, struct pf_addr*, 1373 struct pf_addr *, struct pf_addr *, u_int8_t); 1374 void pf_addr_inc(struct pf_addr *, sa_family_t); 1375 #endif /* INET6 */ 1376 1377 void *pf_pull_hdr(struct mbuf *, int, void *, int, u_short *, u_short *, 1378 sa_family_t); 1379 void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t); 1380 int pflog_packet(struct pfi_kif *, struct mbuf *, sa_family_t, u_int8_t, 1381 u_int8_t, struct pf_rule *, struct pf_rule *, struct pf_ruleset *); 1382 int pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *, 1383 struct pf_addr *, sa_family_t); 1384 int pf_match(u_int8_t, u_int32_t, u_int32_t, u_int32_t); 1385 int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t); 1386 int pf_match_uid(u_int8_t, uid_t, uid_t, uid_t); 1387 int pf_match_gid(u_int8_t, gid_t, gid_t, gid_t); 1388 1389 void pf_normalize_init(void); 1390 #ifdef _LKM 1391 void pf_normalize_destroy(void); 1392 #endif 1393 int pf_normalize_ip(struct mbuf **, int, struct pfi_kif *, u_short *, 1394 struct pf_pdesc *); 1395 int pf_normalize_ip6(struct mbuf **, int, struct pfi_kif *, u_short *, 1396 struct pf_pdesc *); 1397 int pf_normalize_tcp(int, struct pfi_kif *, struct mbuf *, int, int, void *, 1398 struct pf_pdesc *); 1399 void pf_normalize_tcp_cleanup(struct pf_state *); 1400 int pf_normalize_tcp_init(struct mbuf *, int, struct pf_pdesc *, 1401 struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *); 1402 int pf_normalize_tcp_stateful(struct mbuf *, int, struct pf_pdesc *, 1403 u_short *, struct tcphdr *, struct pf_state *, 1404 struct pf_state_peer *, struct pf_state_peer *, int *); 1405 u_int32_t 1406 pf_state_expires(const struct pf_state *); 1407 void pf_purge_expired_fragments(void); 1408 int pf_routable(struct pf_addr *addr, sa_family_t af); 1409 void pfr_initialize(void); 1410 #ifdef _LKM 1411 void pfr_destroy(void); 1412 #endif 1413 int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t); 1414 void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t, 1415 u_int64_t, int, int, int); 1416 int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, 1417 struct pf_addr **, struct pf_addr **, sa_family_t); 1418 void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *); 1419 struct pfr_ktable * 1420 pfr_attach_table(struct pf_ruleset *, char *); 1421 void pfr_detach_table(struct pfr_ktable *); 1422 int pfr_clr_tables(struct pfr_table *, int *, int); 1423 int pfr_add_tables(struct pfr_table *, int, int *, int); 1424 int pfr_del_tables(struct pfr_table *, int, int *, int); 1425 int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int); 1426 int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int); 1427 int pfr_clr_tstats(struct pfr_table *, int, int *, int); 1428 int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int); 1429 int pfr_clr_addrs(struct pfr_table *, int *, int); 1430 int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1431 int); 1432 int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1433 int); 1434 int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1435 int *, int *, int *, int); 1436 int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int); 1437 int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int); 1438 int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *, 1439 int); 1440 int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1441 int); 1442 int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int); 1443 int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int); 1444 int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int); 1445 int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *, 1446 int *, u_int32_t, int); 1447 1448 void pfi_initialize(void); 1449 #ifdef _LKM 1450 void pfi_destroy(void); 1451 #endif 1452 void pfi_attach_clone(struct if_clone *); 1453 void pfi_attach_ifnet(struct ifnet *); 1454 void pfi_detach_ifnet(struct ifnet *); 1455 struct pfi_kif *pfi_lookup_create(const char *); 1456 struct pfi_kif *pfi_lookup_if(const char *); 1457 int pfi_maybe_destroy(struct pfi_kif *); 1458 struct pfi_kif *pfi_attach_rule(const char *); 1459 void pfi_detach_rule(struct pfi_kif *); 1460 void pfi_attach_state(struct pfi_kif *); 1461 void pfi_detach_state(struct pfi_kif *); 1462 int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t); 1463 void pfi_dynaddr_copyout(struct pf_addr_wrap *); 1464 void pfi_dynaddr_remove(struct pf_addr_wrap *); 1465 void pfi_fill_oldstatus(struct pf_status *); 1466 int pfi_clr_istats(const char *, int *, int); 1467 int pfi_get_ifaces(const char *, struct pfi_if *, int *, int); 1468 int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *, 1469 sa_family_t); 1470 1471 extern struct pfi_statehead pfi_statehead; 1472 1473 u_int16_t pf_tagname2tag(char *); 1474 void pf_tag2tagname(u_int16_t, char *); 1475 void pf_tag_unref(u_int16_t); 1476 int pf_tag_packet(struct mbuf *, struct pf_tag *, int); 1477 u_int32_t pf_qname2qid(char *); 1478 void pf_qid2qname(u_int32_t, char *); 1479 void pf_qid_unref(u_int32_t); 1480 1481 extern struct pf_status pf_status; 1482 extern struct pool pf_frent_pl, pf_frag_pl; 1483 1484 struct pf_pool_limit { 1485 void *pp; 1486 unsigned limit; 1487 }; 1488 extern struct pf_pool_limit pf_pool_limits[PF_LIMIT_MAX]; 1489 1490 #ifdef __NetBSD__ 1491 int pfil4_wrapper(void *, struct mbuf **, struct ifnet *, int); 1492 int pfil6_wrapper(void *, struct mbuf **, struct ifnet *, int); 1493 int pfil_ifnet_wrapper(void *, struct mbuf **, struct ifnet *, int); 1494 int pfil_ifaddr_wrapper(void *, struct mbuf **, struct ifnet *, int); 1495 1496 #endif 1497 1498 /* 1499 * misc compatibility stuffs 1500 */ 1501 #if !defined(PRIu32) 1502 #define PRIu32 "u" /* XXX */ 1503 #endif 1504 #if !defined(__OpenBSD__) 1505 #include <sys/kernel.h> /* mono_time */ 1506 static __inline void getmicrouptime(struct timeval *); 1507 static __inline void 1508 getmicrouptime(struct timeval *tvp) 1509 { 1510 int s; 1511 1512 s = splclock(); 1513 *tvp = mono_time; 1514 splx(s); 1515 } 1516 #define time_second time.tv_sec 1517 #define m_copym2 m_dup 1518 #define pool_allocator_oldnointr pool_allocator_nointr 1519 #endif 1520 #endif /* _KERNEL */ 1521 1522 /* The fingerprint functions can be linked into userland programs (tcpdump) */ 1523 int pf_osfp_add(struct pf_osfp_ioctl *); 1524 #ifdef _KERNEL 1525 struct pf_osfp_enlist * 1526 pf_osfp_fingerprint(struct pf_pdesc *, struct mbuf *, int, 1527 const struct tcphdr *); 1528 #endif /* _KERNEL */ 1529 struct pf_osfp_enlist * 1530 pf_osfp_fingerprint_hdr(const struct ip *, const struct tcphdr *); 1531 void pf_osfp_flush(void); 1532 int pf_osfp_get(struct pf_osfp_ioctl *); 1533 void pf_osfp_initialize(void); 1534 #ifdef _LKM 1535 void pf_osfp_destroy(void); 1536 #endif 1537 int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t); 1538 struct pf_os_fingerprint * 1539 pf_osfp_validate(void); 1540 1541 1542 #endif /* _NET_PFVAR_H_ */ 1543
Indexes created Mon Sep 29 21:09:56 GMT 2025