pfvar.h revision 1.5
1 /* $NetBSD: pfvar.h,v 1.5 2004/09/28 00:14:02 dyoung Exp $ */ 2 /* $OpenBSD: pfvar.h,v 1.187 2004/03/22 04:54:18 mcbride Exp $ */ 3 4 /* 5 * Copyright (c) 2001 Daniel Hartmeier 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * - Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * - Redistributions in binary form must reproduce the above 15 * copyright notice, this list of conditions and the following 16 * disclaimer in the documentation and/or other materials provided 17 * with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 22 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 23 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 25 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 26 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 27 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 29 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 * 32 */ 33 34 #ifndef _NET_PFVAR_H_ 35 #define _NET_PFVAR_H_ 36 37 #include <sys/types.h> 38 #include <sys/queue.h> 39 #include <sys/tree.h> 40 41 #include <net/radix.h> 42 #ifdef __OpenBSD__ 43 #include <netinet/ip_ipsp.h> 44 #endif 45 #include <netinet/tcp_fsm.h> 46 47 #ifdef __NetBSD__ 48 union sockaddr_union { 49 struct sockaddr sa; 50 struct sockaddr_in sin; 51 struct sockaddr_in6 sin6; 52 }; 53 #endif 54 55 struct ip; 56 57 #define PF_TCPS_PROXY_SRC ((TCP_NSTATES)+0) 58 #define PF_TCPS_PROXY_DST ((TCP_NSTATES)+1) 59 60 enum { PF_INOUT, PF_IN, PF_OUT }; 61 enum { PF_LAN_EXT, PF_EXT_GWY, PF_ID }; 62 enum { PF_PASS, PF_DROP, PF_SCRUB, PF_NAT, PF_NONAT, 63 PF_BINAT, PF_NOBINAT, PF_RDR, PF_NORDR, PF_SYNPROXY_DROP }; 64 enum { PF_RULESET_SCRUB, PF_RULESET_FILTER, PF_RULESET_NAT, 65 PF_RULESET_BINAT, PF_RULESET_RDR, PF_RULESET_MAX }; 66 enum { PF_OP_NONE, PF_OP_IRG, PF_OP_EQ, PF_OP_NE, PF_OP_LT, 67 PF_OP_LE, PF_OP_GT, PF_OP_GE, PF_OP_XRG, PF_OP_RRG }; 68 enum { PF_DEBUG_NONE, PF_DEBUG_URGENT, PF_DEBUG_MISC, PF_DEBUG_NOISY }; 69 enum { PF_CHANGE_NONE, PF_CHANGE_ADD_HEAD, PF_CHANGE_ADD_TAIL, 70 PF_CHANGE_ADD_BEFORE, PF_CHANGE_ADD_AFTER, 71 PF_CHANGE_REMOVE, PF_CHANGE_GET_TICKET }; 72 /* 73 * Note about PFTM_*: real indices into pf_rule.timeout[] come before 74 * PFTM_MAX, special cases afterwards. See pf_state_expires(). 75 */ 76 enum { PFTM_TCP_FIRST_PACKET, PFTM_TCP_OPENING, PFTM_TCP_ESTABLISHED, 77 PFTM_TCP_CLOSING, PFTM_TCP_FIN_WAIT, PFTM_TCP_CLOSED, 78 PFTM_UDP_FIRST_PACKET, PFTM_UDP_SINGLE, PFTM_UDP_MULTIPLE, 79 PFTM_ICMP_FIRST_PACKET, PFTM_ICMP_ERROR_REPLY, 80 PFTM_OTHER_FIRST_PACKET, PFTM_OTHER_SINGLE, 81 PFTM_OTHER_MULTIPLE, PFTM_FRAG, PFTM_INTERVAL, 82 PFTM_ADAPTIVE_START, PFTM_ADAPTIVE_END, PFTM_SRC_NODE, 83 PFTM_MAX, PFTM_PURGE, PFTM_UNTIL_PACKET }; 84 enum { PF_NOPFROUTE, PF_FASTROUTE, PF_ROUTETO, PF_DUPTO, PF_REPLYTO }; 85 enum { PF_LIMIT_STATES, PF_LIMIT_SRC_NODES, PF_LIMIT_FRAGS, PF_LIMIT_MAX }; 86 #define PF_POOL_IDMASK 0x0f 87 enum { PF_POOL_NONE, PF_POOL_BITMASK, PF_POOL_RANDOM, 88 PF_POOL_SRCHASH, PF_POOL_ROUNDROBIN }; 89 enum { PF_ADDR_ADDRMASK, PF_ADDR_NOROUTE, PF_ADDR_DYNIFTL, 90 PF_ADDR_TABLE }; 91 #define PF_POOL_TYPEMASK 0x0f 92 #define PF_POOL_STICKYADDR 0x20 93 #define PF_WSCALE_FLAG 0x80 94 #define PF_WSCALE_MASK 0x0f 95 96 struct pf_addr { 97 union { 98 struct in_addr v4; 99 struct in6_addr v6; 100 u_int8_t addr8[16]; 101 u_int16_t addr16[8]; 102 u_int32_t addr32[4]; 103 } pfa; /* 128-bit address */ 104 #define v4 pfa.v4 105 #define v6 pfa.v6 106 #define addr8 pfa.addr8 107 #define addr16 pfa.addr16 108 #define addr32 pfa.addr32 109 }; 110 111 #define PF_TABLE_NAME_SIZE 32 112 113 #define PFI_AFLAG_NETWORK 0x01 114 #define PFI_AFLAG_BROADCAST 0x02 115 #define PFI_AFLAG_PEER 0x04 116 #define PFI_AFLAG_MODEMASK 0x07 117 #define PFI_AFLAG_NOALIAS 0x08 118 119 struct pf_addr_wrap { 120 union { 121 struct { 122 struct pf_addr addr; 123 struct pf_addr mask; 124 } a; 125 char ifname[IFNAMSIZ]; 126 char tblname[PF_TABLE_NAME_SIZE]; 127 } v; 128 union { 129 struct pfi_dynaddr *dyn; 130 struct pfr_ktable *tbl; 131 int dyncnt; 132 int tblcnt; 133 } p; 134 u_int8_t type; /* PF_ADDR_* */ 135 u_int8_t iflags; /* PFI_AFLAG_* */ 136 }; 137 138 #ifdef _KERNEL 139 140 #ifdef __NetBSD__ 141 struct hook_desc { 142 TAILQ_ENTRY(hook_desc) hd_list; 143 void (*hd_fn)(void *); 144 void *hd_arg; 145 }; 146 TAILQ_HEAD(hook_desc_head, hook_desc); 147 #endif 148 149 struct pfi_dynaddr { 150 struct pf_addr pfid_addr4; 151 struct pf_addr pfid_mask4; 152 struct pf_addr pfid_addr6; 153 struct pf_addr pfid_mask6; 154 struct pfr_ktable *pfid_kt; 155 struct pfi_kif *pfid_kif; 156 void *pfid_hook_cookie; 157 int pfid_net; /* optional mask, or 128 */ 158 int pfid_acnt4; /* address count, IPv4 */ 159 int pfid_acnt6; /* address count, IPv6 */ 160 sa_family_t pfid_af; /* rule address family */ 161 u_int8_t pfid_iflags; /* PFI_AFLAG_* */ 162 }; 163 164 /* 165 * Address manipulation macros 166 */ 167 168 #ifdef INET 169 #ifndef INET6 170 #define PF_INET_ONLY 171 #endif /* ! INET6 */ 172 #endif /* INET */ 173 174 #ifdef INET6 175 #ifndef INET 176 #define PF_INET6_ONLY 177 #endif /* ! INET */ 178 #endif /* INET6 */ 179 180 #ifdef INET 181 #ifdef INET6 182 #define PF_INET_INET6 183 #endif /* INET6 */ 184 #endif /* INET */ 185 186 #else 187 188 #define PF_INET_INET6 189 190 #endif /* _KERNEL */ 191 192 /* Both IPv4 and IPv6 */ 193 #ifdef PF_INET_INET6 194 195 #define PF_AEQ(a, b, c) \ 196 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \ 197 ((a)->addr32[3] == (b)->addr32[3] && \ 198 (a)->addr32[2] == (b)->addr32[2] && \ 199 (a)->addr32[1] == (b)->addr32[1] && \ 200 (a)->addr32[0] == (b)->addr32[0])) \ 201 202 #define PF_ANEQ(a, b, c) \ 203 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \ 204 ((a)->addr32[3] != (b)->addr32[3] || \ 205 (a)->addr32[2] != (b)->addr32[2] || \ 206 (a)->addr32[1] != (b)->addr32[1] || \ 207 (a)->addr32[0] != (b)->addr32[0])) \ 208 209 #define PF_AZERO(a, c) \ 210 ((c == AF_INET && !(a)->addr32[0]) || \ 211 (!(a)->addr32[0] && !(a)->addr32[1] && \ 212 !(a)->addr32[2] && !(a)->addr32[3] )) \ 213 214 #define PF_MATCHA(n, a, m, b, f) \ 215 pf_match_addr(n, a, m, b, f) 216 217 #define PF_ACPY(a, b, f) \ 218 pf_addrcpy(a, b, f) 219 220 #define PF_AINC(a, f) \ 221 pf_addr_inc(a, f) 222 223 #define PF_POOLMASK(a, b, c, d, f) \ 224 pf_poolmask(a, b, c, d, f) 225 226 #else 227 228 /* Just IPv6 */ 229 230 #ifdef PF_INET6_ONLY 231 232 #define PF_AEQ(a, b, c) \ 233 ((a)->addr32[3] == (b)->addr32[3] && \ 234 (a)->addr32[2] == (b)->addr32[2] && \ 235 (a)->addr32[1] == (b)->addr32[1] && \ 236 (a)->addr32[0] == (b)->addr32[0]) \ 237 238 #define PF_ANEQ(a, b, c) \ 239 ((a)->addr32[3] != (b)->addr32[3] || \ 240 (a)->addr32[2] != (b)->addr32[2] || \ 241 (a)->addr32[1] != (b)->addr32[1] || \ 242 (a)->addr32[0] != (b)->addr32[0]) \ 243 244 #define PF_AZERO(a, c) \ 245 (!(a)->addr32[0] && \ 246 !(a)->addr32[1] && \ 247 !(a)->addr32[2] && \ 248 !(a)->addr32[3] ) \ 249 250 #define PF_MATCHA(n, a, m, b, f) \ 251 pf_match_addr(n, a, m, b, f) 252 253 #define PF_ACPY(a, b, f) \ 254 pf_addrcpy(a, b, f) 255 256 #define PF_AINC(a, f) \ 257 pf_addr_inc(a, f) 258 259 #define PF_POOLMASK(a, b, c, d, f) \ 260 pf_poolmask(a, b, c, d, f) 261 262 #else 263 264 /* Just IPv4 */ 265 #ifdef PF_INET_ONLY 266 267 #define PF_AEQ(a, b, c) \ 268 ((a)->addr32[0] == (b)->addr32[0]) 269 270 #define PF_ANEQ(a, b, c) \ 271 ((a)->addr32[0] != (b)->addr32[0]) 272 273 #define PF_AZERO(a, c) \ 274 (!(a)->addr32[0]) 275 276 #define PF_MATCHA(n, a, m, b, f) \ 277 pf_match_addr(n, a, m, b, f) 278 279 #define PF_ACPY(a, b, f) \ 280 (a)->v4.s_addr = (b)->v4.s_addr 281 282 #define PF_AINC(a, f) \ 283 do { \ 284 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \ 285 } while (0) 286 287 #define PF_POOLMASK(a, b, c, d, f) \ 288 do { \ 289 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \ 290 (((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \ 291 } while (0) 292 293 #endif /* PF_INET_ONLY */ 294 #endif /* PF_INET6_ONLY */ 295 #endif /* PF_INET_INET6 */ 296 297 #define PF_MISMATCHAW(aw, x, af, not) \ 298 ( \ 299 (((aw)->type == PF_ADDR_NOROUTE && \ 300 pf_routable((x), (af))) || \ 301 ((aw)->type == PF_ADDR_TABLE && \ 302 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \ 303 ((aw)->type == PF_ADDR_DYNIFTL && \ 304 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \ 305 ((aw)->type == PF_ADDR_ADDRMASK && \ 306 !PF_AZERO(&(aw)->v.a.mask, (af)) && \ 307 !PF_MATCHA(0, &(aw)->v.a.addr, \ 308 &(aw)->v.a.mask, (x), (af)))) != \ 309 (not) \ 310 ) 311 312 struct pf_rule_uid { 313 uid_t uid[2]; 314 u_int8_t op; 315 }; 316 317 struct pf_rule_gid { 318 uid_t gid[2]; 319 u_int8_t op; 320 }; 321 322 struct pf_rule_addr { 323 struct pf_addr_wrap addr; 324 u_int16_t port[2]; 325 u_int8_t not; 326 u_int8_t port_op; 327 }; 328 329 struct pf_pooladdr { 330 struct pf_addr_wrap addr; 331 TAILQ_ENTRY(pf_pooladdr) entries; 332 char ifname[IFNAMSIZ]; 333 struct pfi_kif *kif; 334 }; 335 336 TAILQ_HEAD(pf_palist, pf_pooladdr); 337 338 struct pf_poolhashkey { 339 union { 340 u_int8_t key8[16]; 341 u_int16_t key16[8]; 342 u_int32_t key32[4]; 343 } pfk; /* 128-bit hash key */ 344 #define key8 pfk.key8 345 #define key16 pfk.key16 346 #define key32 pfk.key32 347 }; 348 349 struct pf_pool { 350 struct pf_palist list; 351 struct pf_pooladdr *cur; 352 struct pf_poolhashkey key; 353 struct pf_addr counter; 354 int tblidx; 355 u_int16_t proxy_port[2]; 356 u_int8_t port_op; 357 u_int8_t opts; 358 }; 359 360 361 /* A packed Operating System description for fingerprinting */ 362 typedef u_int32_t pf_osfp_t; 363 #define PF_OSFP_ANY ((pf_osfp_t)0) 364 #define PF_OSFP_UNKNOWN ((pf_osfp_t)-1) 365 #define PF_OSFP_NOMATCH ((pf_osfp_t)-2) 366 367 struct pf_osfp_entry { 368 SLIST_ENTRY(pf_osfp_entry) fp_entry; 369 pf_osfp_t fp_os; 370 int fp_enflags; 371 #define PF_OSFP_EXPANDED 0x001 /* expanded entry */ 372 #define PF_OSFP_GENERIC 0x002 /* generic signature */ 373 #define PF_OSFP_NODETAIL 0x004 /* no p0f details */ 374 #define PF_OSFP_LEN 32 375 char fp_class_nm[PF_OSFP_LEN]; 376 char fp_version_nm[PF_OSFP_LEN]; 377 char fp_subtype_nm[PF_OSFP_LEN]; 378 }; 379 #define PF_OSFP_ENTRY_EQ(a, b) \ 380 ((a)->fp_os == (b)->fp_os && \ 381 memcmp((a)->fp_class_nm, (b)->fp_class_nm, PF_OSFP_LEN) == 0 && \ 382 memcmp((a)->fp_version_nm, (b)->fp_version_nm, PF_OSFP_LEN) == 0 && \ 383 memcmp((a)->fp_subtype_nm, (b)->fp_subtype_nm, PF_OSFP_LEN) == 0) 384 385 /* handle pf_osfp_t packing */ 386 #define _FP_RESERVED_BIT 1 /* For the special negative #defines */ 387 #define _FP_UNUSED_BITS 1 388 #define _FP_CLASS_BITS 10 /* OS Class (Windows, Linux) */ 389 #define _FP_VERSION_BITS 10 /* OS version (95, 98, NT, 2.4.54, 3.2) */ 390 #define _FP_SUBTYPE_BITS 10 /* patch level (NT SP4, SP3, ECN patch) */ 391 #define PF_OSFP_UNPACK(osfp, class, version, subtype) do { \ 392 (class) = ((osfp) >> (_FP_VERSION_BITS+_FP_SUBTYPE_BITS)) & \ 393 ((1 << _FP_CLASS_BITS) - 1); \ 394 (version) = ((osfp) >> _FP_SUBTYPE_BITS) & \ 395 ((1 << _FP_VERSION_BITS) - 1);\ 396 (subtype) = (osfp) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 397 } while(0) 398 #define PF_OSFP_PACK(osfp, class, version, subtype) do { \ 399 (osfp) = ((class) & ((1 << _FP_CLASS_BITS) - 1)) << (_FP_VERSION_BITS \ 400 + _FP_SUBTYPE_BITS); \ 401 (osfp) |= ((version) & ((1 << _FP_VERSION_BITS) - 1)) << \ 402 _FP_SUBTYPE_BITS; \ 403 (osfp) |= (subtype) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 404 } while(0) 405 406 /* the fingerprint of an OSes TCP SYN packet */ 407 typedef u_int64_t pf_tcpopts_t; 408 struct pf_os_fingerprint { 409 SLIST_HEAD(pf_osfp_enlist, pf_osfp_entry) fp_oses; /* list of matches */ 410 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 411 u_int16_t fp_wsize; /* TCP window size */ 412 u_int16_t fp_psize; /* ip->ip_len */ 413 u_int16_t fp_mss; /* TCP MSS */ 414 u_int16_t fp_flags; 415 #define PF_OSFP_WSIZE_MOD 0x0001 /* Window modulus */ 416 #define PF_OSFP_WSIZE_DC 0x0002 /* Window don't care */ 417 #define PF_OSFP_WSIZE_MSS 0x0004 /* Window multiple of MSS */ 418 #define PF_OSFP_WSIZE_MTU 0x0008 /* Window multiple of MTU */ 419 #define PF_OSFP_PSIZE_MOD 0x0010 /* packet size modulus */ 420 #define PF_OSFP_PSIZE_DC 0x0020 /* packet size don't care */ 421 #define PF_OSFP_WSCALE 0x0040 /* TCP window scaling */ 422 #define PF_OSFP_WSCALE_MOD 0x0080 /* TCP window scale modulus */ 423 #define PF_OSFP_WSCALE_DC 0x0100 /* TCP window scale dont-care */ 424 #define PF_OSFP_MSS 0x0200 /* TCP MSS */ 425 #define PF_OSFP_MSS_MOD 0x0400 /* TCP MSS modulus */ 426 #define PF_OSFP_MSS_DC 0x0800 /* TCP MSS dont-care */ 427 #define PF_OSFP_DF 0x1000 /* IPv4 don't fragment bit */ 428 #define PF_OSFP_TS0 0x2000 /* Zero timestamp */ 429 u_int8_t fp_optcnt; /* TCP option count */ 430 u_int8_t fp_wscale; /* TCP window scaling */ 431 u_int8_t fp_ttl; /* IPv4 TTL */ 432 #define PF_OSFP_MAXTTL_OFFSET 40 433 /* TCP options packing */ 434 #define PF_OSFP_TCPOPT_NOP 0x0 /* TCP NOP option */ 435 #define PF_OSFP_TCPOPT_WSCALE 0x1 /* TCP window scaling option */ 436 #define PF_OSFP_TCPOPT_MSS 0x2 /* TCP max segment size opt */ 437 #define PF_OSFP_TCPOPT_SACK 0x3 /* TCP SACK OK option */ 438 #define PF_OSFP_TCPOPT_TS 0x4 /* TCP timestamp option */ 439 #define PF_OSFP_TCPOPT_BITS 3 /* bits used by each option */ 440 #define PF_OSFP_MAX_OPTS \ 441 (sizeof(((struct pf_os_fingerprint *)0)->fp_tcpopts) * 8) \ 442 / PF_OSFP_TCPOPT_BITS 443 444 SLIST_ENTRY(pf_os_fingerprint) fp_next; 445 }; 446 447 struct pf_osfp_ioctl { 448 struct pf_osfp_entry fp_os; 449 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 450 u_int16_t fp_wsize; /* TCP window size */ 451 u_int16_t fp_psize; /* ip->ip_len */ 452 u_int16_t fp_mss; /* TCP MSS */ 453 u_int16_t fp_flags; 454 u_int8_t fp_optcnt; /* TCP option count */ 455 u_int8_t fp_wscale; /* TCP window scaling */ 456 u_int8_t fp_ttl; /* IPv4 TTL */ 457 458 int fp_getnum; /* DIOCOSFPGET number */ 459 }; 460 461 462 union pf_rule_ptr { 463 struct pf_rule *ptr; 464 u_int32_t nr; 465 }; 466 467 struct pf_rule { 468 struct pf_rule_addr src; 469 struct pf_rule_addr dst; 470 #define PF_SKIP_IFP 0 471 #define PF_SKIP_DIR 1 472 #define PF_SKIP_AF 2 473 #define PF_SKIP_PROTO 3 474 #define PF_SKIP_SRC_ADDR 4 475 #define PF_SKIP_SRC_PORT 5 476 #define PF_SKIP_DST_ADDR 6 477 #define PF_SKIP_DST_PORT 7 478 #define PF_SKIP_COUNT 8 479 union pf_rule_ptr skip[PF_SKIP_COUNT]; 480 #define PF_RULE_LABEL_SIZE 64 481 char label[PF_RULE_LABEL_SIZE]; 482 #define PF_QNAME_SIZE 16 483 char ifname[IFNAMSIZ]; 484 char qname[PF_QNAME_SIZE]; 485 char pqname[PF_QNAME_SIZE]; 486 #define PF_ANCHOR_NAME_SIZE 16 487 char anchorname[PF_ANCHOR_NAME_SIZE]; 488 #define PF_TAG_NAME_SIZE 16 489 char tagname[PF_TAG_NAME_SIZE]; 490 char match_tagname[PF_TAG_NAME_SIZE]; 491 492 TAILQ_ENTRY(pf_rule) entries; 493 struct pf_pool rpool; 494 495 u_int64_t evaluations; 496 u_int64_t packets; 497 u_int64_t bytes; 498 499 struct pfi_kif *kif; 500 struct pf_anchor *anchor; 501 502 pf_osfp_t os_fingerprint; 503 504 u_int32_t timeout[PFTM_MAX]; 505 u_int32_t states; 506 u_int32_t max_states; 507 u_int32_t src_nodes; 508 u_int32_t max_src_nodes; 509 u_int32_t max_src_states; 510 u_int32_t qid; 511 u_int32_t pqid; 512 u_int32_t rt_listid; 513 u_int32_t nr; 514 515 u_int16_t return_icmp; 516 u_int16_t return_icmp6; 517 u_int16_t max_mss; 518 u_int16_t tag; 519 u_int16_t match_tag; 520 521 struct pf_rule_uid uid; 522 struct pf_rule_gid gid; 523 524 u_int32_t rule_flag; 525 u_int8_t action; 526 u_int8_t direction; 527 u_int8_t log; 528 u_int8_t quick; 529 u_int8_t ifnot; 530 u_int8_t match_tag_not; 531 u_int8_t natpass; 532 533 #define PF_STATE_NORMAL 0x1 534 #define PF_STATE_MODULATE 0x2 535 #define PF_STATE_SYNPROXY 0x3 536 u_int8_t keep_state; 537 sa_family_t af; 538 u_int8_t proto; 539 u_int8_t type; 540 u_int8_t code; 541 u_int8_t flags; 542 u_int8_t flagset; 543 u_int8_t min_ttl; 544 u_int8_t allow_opts; 545 u_int8_t rt; 546 u_int8_t return_ttl; 547 u_int8_t tos; 548 }; 549 550 /* rule flags */ 551 #define PFRULE_DROP 0x0000 552 #define PFRULE_RETURNRST 0x0001 553 #define PFRULE_FRAGMENT 0x0002 554 #define PFRULE_RETURNICMP 0x0004 555 #define PFRULE_RETURN 0x0008 556 #define PFRULE_NOSYNC 0x0010 557 #define PFRULE_SRCTRACK 0x0020 /* track source states */ 558 #define PFRULE_RULESRCTRACK 0x0040 /* per rule */ 559 560 /* scrub flags */ 561 #define PFRULE_NODF 0x0100 562 #define PFRULE_FRAGCROP 0x0200 /* non-buffering frag cache */ 563 #define PFRULE_FRAGDROP 0x0400 /* drop funny fragments */ 564 #define PFRULE_RANDOMID 0x0800 565 #define PFRULE_REASSEMBLE_TCP 0x1000 566 567 /* rule flags again */ 568 #define PFRULE_IFBOUND 0x00010000 /* if-bound */ 569 #define PFRULE_GRBOUND 0x00020000 /* group-bound */ 570 571 #define PFSTATE_HIWAT 10000 /* default state table size */ 572 573 struct pf_src_node { 574 RB_ENTRY(pf_src_node) entry; 575 struct pf_addr addr; 576 struct pf_addr raddr; 577 union pf_rule_ptr rule; 578 struct pfi_kif *kif; 579 u_int32_t bytes; 580 u_int32_t packets; 581 u_int32_t states; 582 u_int32_t creation; 583 u_int32_t expire; 584 sa_family_t af; 585 u_int8_t ruletype; 586 }; 587 588 #define PFSNODE_HIWAT 10000 /* default source node table size */ 589 590 struct pf_state_scrub { 591 u_int16_t pfss_flags; 592 #define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */ 593 u_int8_t pfss_ttl; /* stashed TTL */ 594 u_int8_t pad; 595 u_int32_t pfss_ts_mod; /* timestamp modulation */ 596 }; 597 598 struct pf_state_host { 599 struct pf_addr addr; 600 u_int16_t port; 601 u_int16_t pad; 602 }; 603 604 struct pf_state_peer { 605 u_int32_t seqlo; /* Max sequence number sent */ 606 u_int32_t seqhi; /* Max the other end ACKd + win */ 607 u_int32_t seqdiff; /* Sequence number modulator */ 608 u_int16_t max_win; /* largest window (pre scaling) */ 609 u_int8_t state; /* active state level */ 610 u_int8_t wscale; /* window scaling factor */ 611 u_int16_t mss; /* Maximum segment size option */ 612 struct pf_state_scrub *scrub; /* state is scrubbed */ 613 }; 614 615 TAILQ_HEAD(pf_state_queue, pf_state); 616 617 struct pf_state { 618 u_int64_t id; 619 union { 620 struct { 621 RB_ENTRY(pf_state) entry_lan_ext; 622 RB_ENTRY(pf_state) entry_ext_gwy; 623 RB_ENTRY(pf_state) entry_id; 624 TAILQ_ENTRY(pf_state) entry_updates; 625 struct pfi_kif *kif; 626 } s; 627 char ifname[IFNAMSIZ]; 628 } u; 629 struct pf_state_host lan; 630 struct pf_state_host gwy; 631 struct pf_state_host ext; 632 struct pf_state_peer src; 633 struct pf_state_peer dst; 634 union pf_rule_ptr rule; 635 union pf_rule_ptr anchor; 636 union pf_rule_ptr nat_rule; 637 struct pf_addr rt_addr; 638 struct pfi_kif *rt_kif; 639 struct pf_src_node *src_node; 640 struct pf_src_node *nat_src_node; 641 u_int32_t creation; 642 u_int32_t expire; 643 u_int32_t pfsync_time; 644 u_int32_t packets[2]; 645 u_int32_t bytes[2]; 646 u_int32_t creatorid; 647 sa_family_t af; 648 u_int8_t proto; 649 u_int8_t direction; 650 u_int8_t log; 651 u_int8_t allow_opts; 652 u_int8_t timeout; 653 u_int8_t sync_flags; 654 #define PFSTATE_NOSYNC 0x01 655 #define PFSTATE_FROMSYNC 0x02 656 u_int8_t pad; 657 }; 658 659 TAILQ_HEAD(pf_rulequeue, pf_rule); 660 661 struct pf_anchor; 662 663 struct pf_ruleset { 664 TAILQ_ENTRY(pf_ruleset) entries; 665 #define PF_RULESET_NAME_SIZE 16 666 char name[PF_RULESET_NAME_SIZE]; 667 struct { 668 struct pf_rulequeue queues[2]; 669 struct { 670 struct pf_rulequeue *ptr; 671 u_int32_t ticket; 672 int open; 673 } active, inactive; 674 } rules[PF_RULESET_MAX]; 675 struct pf_anchor *anchor; 676 u_int32_t tticket; 677 int tables; 678 int topen; 679 }; 680 681 TAILQ_HEAD(pf_rulesetqueue, pf_ruleset); 682 683 struct pf_anchor { 684 TAILQ_ENTRY(pf_anchor) entries; 685 char name[PF_ANCHOR_NAME_SIZE]; 686 struct pf_rulesetqueue rulesets; 687 int tables; 688 }; 689 690 TAILQ_HEAD(pf_anchorqueue, pf_anchor); 691 692 #define PF_RESERVED_ANCHOR "_pf" 693 #define PF_INTERFACE_RULESET "_if" 694 695 #define PFR_TFLAG_PERSIST 0x00000001 696 #define PFR_TFLAG_CONST 0x00000002 697 #define PFR_TFLAG_ACTIVE 0x00000004 698 #define PFR_TFLAG_INACTIVE 0x00000008 699 #define PFR_TFLAG_REFERENCED 0x00000010 700 #define PFR_TFLAG_REFDANCHOR 0x00000020 701 #define PFR_TFLAG_USRMASK 0x00000003 702 #define PFR_TFLAG_SETMASK 0x0000003C 703 #define PFR_TFLAG_ALLMASK 0x0000003F 704 705 struct pfr_table { 706 char pfrt_anchor[PF_ANCHOR_NAME_SIZE]; 707 char pfrt_ruleset[PF_RULESET_NAME_SIZE]; 708 char pfrt_name[PF_TABLE_NAME_SIZE]; 709 u_int32_t pfrt_flags; 710 u_int8_t pfrt_fback; 711 }; 712 713 enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED, 714 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE, 715 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_MAX }; 716 717 struct pfr_addr { 718 union { 719 struct in_addr _pfra_ip4addr; 720 struct in6_addr _pfra_ip6addr; 721 } pfra_u; 722 u_int8_t pfra_af; 723 u_int8_t pfra_net; 724 u_int8_t pfra_not; 725 u_int8_t pfra_fback; 726 }; 727 #define pfra_ip4addr pfra_u._pfra_ip4addr 728 #define pfra_ip6addr pfra_u._pfra_ip6addr 729 730 enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX }; 731 enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX }; 732 #define PFR_OP_XPASS PFR_OP_ADDR_MAX 733 734 struct pfr_astats { 735 struct pfr_addr pfras_a; 736 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 737 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 738 long pfras_tzero; 739 }; 740 741 enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX }; 742 743 struct pfr_tstats { 744 struct pfr_table pfrts_t; 745 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 746 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 747 u_int64_t pfrts_match; 748 u_int64_t pfrts_nomatch; 749 long pfrts_tzero; 750 int pfrts_cnt; 751 int pfrts_refcnt[PFR_REFCNT_MAX]; 752 }; 753 #define pfrts_name pfrts_t.pfrt_name 754 #define pfrts_flags pfrts_t.pfrt_flags 755 756 SLIST_HEAD(pfr_kentryworkq, pfr_kentry); 757 struct pfr_kentry { 758 struct radix_node pfrke_node[2]; 759 union sockaddr_union pfrke_sa; 760 u_int64_t pfrke_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 761 u_int64_t pfrke_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 762 SLIST_ENTRY(pfr_kentry) pfrke_workq; 763 long pfrke_tzero; 764 u_int8_t pfrke_af; 765 u_int8_t pfrke_net; 766 u_int8_t pfrke_not; 767 u_int8_t pfrke_mark; 768 }; 769 770 SLIST_HEAD(pfr_ktableworkq, pfr_ktable); 771 RB_HEAD(pfr_ktablehead, pfr_ktable); 772 struct pfr_ktable { 773 struct pfr_tstats pfrkt_ts; 774 RB_ENTRY(pfr_ktable) pfrkt_tree; 775 SLIST_ENTRY(pfr_ktable) pfrkt_workq; 776 struct radix_node_head *pfrkt_ip4; 777 struct radix_node_head *pfrkt_ip6; 778 struct pfr_ktable *pfrkt_shadow; 779 struct pfr_ktable *pfrkt_root; 780 struct pf_ruleset *pfrkt_rs; 781 long pfrkt_larg; 782 int pfrkt_nflags; 783 }; 784 #define pfrkt_t pfrkt_ts.pfrts_t 785 #define pfrkt_name pfrkt_t.pfrt_name 786 #define pfrkt_anchor pfrkt_t.pfrt_anchor 787 #define pfrkt_ruleset pfrkt_t.pfrt_ruleset 788 #define pfrkt_flags pfrkt_t.pfrt_flags 789 #define pfrkt_cnt pfrkt_ts.pfrts_cnt 790 #define pfrkt_refcnt pfrkt_ts.pfrts_refcnt 791 #define pfrkt_packets pfrkt_ts.pfrts_packets 792 #define pfrkt_bytes pfrkt_ts.pfrts_bytes 793 #define pfrkt_match pfrkt_ts.pfrts_match 794 #define pfrkt_nomatch pfrkt_ts.pfrts_nomatch 795 #define pfrkt_tzero pfrkt_ts.pfrts_tzero 796 797 RB_HEAD(pf_state_tree_lan_ext, pf_state); 798 RB_PROTOTYPE(pf_state_tree_lan_ext, pf_state, 799 u.s.entry_lan_ext, pf_state_compare_lan_ext) 800 801 RB_HEAD(pf_state_tree_ext_gwy, pf_state); 802 RB_PROTOTYPE(pf_state_tree_ext_gwy, pf_state, 803 u.s.entry_ext_gwy, pf_state_compare_ext_gwy) 804 805 struct pfi_if { 806 char pfif_name[IFNAMSIZ]; 807 u_int64_t pfif_packets[2][2][2]; 808 u_int64_t pfif_bytes[2][2][2]; 809 u_int64_t pfif_addcnt; 810 u_int64_t pfif_delcnt; 811 long pfif_tzero; 812 int pfif_states; 813 int pfif_rules; 814 int pfif_flags; 815 }; 816 817 TAILQ_HEAD(pfi_grouphead, pfi_kif); 818 TAILQ_HEAD(pfi_statehead, pfi_kif); 819 RB_HEAD(pfi_ifhead, pfi_kif); 820 struct pfi_kif { 821 struct pfi_if pfik_if; 822 RB_ENTRY(pfi_kif) pfik_tree; 823 struct pf_state_tree_lan_ext pfik_lan_ext; 824 struct pf_state_tree_ext_gwy pfik_ext_gwy; 825 struct pfi_grouphead pfik_grouphead; 826 TAILQ_ENTRY(pfi_kif) pfik_instances; 827 TAILQ_ENTRY(pfi_kif) pfik_w_states; 828 struct hook_desc_head *pfik_ah_head; 829 void *pfik_ah_cookie; 830 struct pfi_kif *pfik_parent; 831 struct ifnet *pfik_ifp; 832 int pfik_states; 833 int pfik_rules; 834 #ifdef __NetBSD__ 835 struct hook_desc_head *pfik_ifaddrhooks; 836 #endif 837 }; 838 #define pfik_name pfik_if.pfif_name 839 #define pfik_packets pfik_if.pfif_packets 840 #define pfik_bytes pfik_if.pfif_bytes 841 #define pfik_tzero pfik_if.pfif_tzero 842 #define pfik_flags pfik_if.pfif_flags 843 #define pfik_addcnt pfik_if.pfif_addcnt 844 #define pfik_delcnt pfik_if.pfif_delcnt 845 #define pfik_states pfik_if.pfif_states 846 #define pfik_rules pfik_if.pfif_rules 847 848 #define PFI_IFLAG_GROUP 0x0001 /* group of interfaces */ 849 #define PFI_IFLAG_INSTANCE 0x0002 /* single instance */ 850 #define PFI_IFLAG_CLONABLE 0x0010 /* clonable group */ 851 #define PFI_IFLAG_DYNAMIC 0x0020 /* dynamic group */ 852 #define PFI_IFLAG_ATTACHED 0x0040 /* interface attached */ 853 854 struct pf_pdesc { 855 u_int64_t tot_len; /* Make Mickey money */ 856 union { 857 struct tcphdr *tcp; 858 struct udphdr *udp; 859 struct icmp *icmp; 860 #ifdef INET6 861 struct icmp6_hdr *icmp6; 862 #endif /* INET6 */ 863 void *any; 864 } hdr; 865 struct pf_addr baddr; /* address before translation */ 866 struct pf_addr naddr; /* address after translation */ 867 struct pf_rule *nat_rule; /* nat/rdr rule applied to packet */ 868 struct pf_addr *src; 869 struct pf_addr *dst; 870 u_int16_t *ip_sum; 871 u_int32_t p_len; /* total length of payload */ 872 u_int16_t flags; /* Let SCRUB trigger behavior in 873 * state code. Easier than tags */ 874 #define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */ 875 sa_family_t af; 876 u_int8_t proto; 877 u_int8_t tos; 878 }; 879 880 /* flags for RDR options */ 881 #define PF_DPORT_RANGE 0x01 /* Dest port uses range */ 882 #define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */ 883 884 /* Reasons code for passing/dropping a packet */ 885 #define PFRES_MATCH 0 /* Explicit match of a rule */ 886 #define PFRES_BADOFF 1 /* Bad offset for pull_hdr */ 887 #define PFRES_FRAG 2 /* Dropping following fragment */ 888 #define PFRES_SHORT 3 /* Dropping short packet */ 889 #define PFRES_NORM 4 /* Dropping by normalizer */ 890 #define PFRES_MEMORY 5 /* Dropped due to lacking mem */ 891 #define PFRES_MAX 6 /* total+1 */ 892 893 #define PFRES_NAMES { \ 894 "match", \ 895 "bad-offset", \ 896 "fragment", \ 897 "short", \ 898 "normalize", \ 899 "memory", \ 900 NULL \ 901 } 902 903 /* UDP state enumeration */ 904 #define PFUDPS_NO_TRAFFIC 0 905 #define PFUDPS_SINGLE 1 906 #define PFUDPS_MULTIPLE 2 907 908 #define PFUDPS_NSTATES 3 /* number of state levels */ 909 910 #define PFUDPS_NAMES { \ 911 "NO_TRAFFIC", \ 912 "SINGLE", \ 913 "MULTIPLE", \ 914 NULL \ 915 } 916 917 /* Other protocol state enumeration */ 918 #define PFOTHERS_NO_TRAFFIC 0 919 #define PFOTHERS_SINGLE 1 920 #define PFOTHERS_MULTIPLE 2 921 922 #define PFOTHERS_NSTATES 3 /* number of state levels */ 923 924 #define PFOTHERS_NAMES { \ 925 "NO_TRAFFIC", \ 926 "SINGLE", \ 927 "MULTIPLE", \ 928 NULL \ 929 } 930 931 #define FCNT_STATE_SEARCH 0 932 #define FCNT_STATE_INSERT 1 933 #define FCNT_STATE_REMOVALS 2 934 #define FCNT_MAX 3 935 936 #define SCNT_SRC_NODE_SEARCH 0 937 #define SCNT_SRC_NODE_INSERT 1 938 #define SCNT_SRC_NODE_REMOVALS 2 939 #define SCNT_MAX 3 940 941 #define ACTION_SET(a, x) \ 942 do { \ 943 if ((a) != NULL) \ 944 *(a) = (x); \ 945 } while (0) 946 947 #define REASON_SET(a, x) \ 948 do { \ 949 if ((a) != NULL) \ 950 *(a) = (x); \ 951 if (x < PFRES_MAX) \ 952 pf_status.counters[x]++; \ 953 } while (0) 954 955 struct pf_status { 956 u_int64_t counters[PFRES_MAX]; 957 u_int64_t fcounters[FCNT_MAX]; 958 u_int64_t scounters[SCNT_MAX]; 959 u_int64_t pcounters[2][2][3]; 960 u_int64_t bcounters[2][2]; 961 u_int64_t stateid; 962 u_int32_t running; 963 u_int32_t states; 964 u_int32_t src_nodes; 965 u_int32_t since; 966 u_int32_t debug; 967 u_int32_t hostid; 968 char ifname[IFNAMSIZ]; 969 }; 970 971 struct cbq_opts { 972 u_int minburst; 973 u_int maxburst; 974 u_int pktsize; 975 u_int maxpktsize; 976 u_int ns_per_byte; 977 u_int maxidle; 978 int minidle; 979 u_int offtime; 980 int flags; 981 }; 982 983 struct priq_opts { 984 int flags; 985 }; 986 987 struct hfsc_opts { 988 /* real-time service curve */ 989 u_int rtsc_m1; /* slope of the 1st segment in bps */ 990 u_int rtsc_d; /* the x-projection of m1 in msec */ 991 u_int rtsc_m2; /* slope of the 2nd segment in bps */ 992 /* link-sharing service curve */ 993 u_int lssc_m1; 994 u_int lssc_d; 995 u_int lssc_m2; 996 /* upper-limit service curve */ 997 u_int ulsc_m1; 998 u_int ulsc_d; 999 u_int ulsc_m2; 1000 int flags; 1001 }; 1002 1003 struct pf_altq { 1004 char ifname[IFNAMSIZ]; 1005 1006 void *altq_disc; /* discipline-specific state */ 1007 TAILQ_ENTRY(pf_altq) entries; 1008 1009 /* scheduler spec */ 1010 u_int8_t scheduler; /* scheduler type */ 1011 u_int16_t tbrsize; /* tokenbucket regulator size */ 1012 u_int32_t ifbandwidth; /* interface bandwidth */ 1013 1014 /* queue spec */ 1015 char qname[PF_QNAME_SIZE]; /* queue name */ 1016 char parent[PF_QNAME_SIZE]; /* parent name */ 1017 u_int32_t parent_qid; /* parent queue id */ 1018 u_int32_t bandwidth; /* queue bandwidth */ 1019 u_int8_t priority; /* priority */ 1020 u_int16_t qlimit; /* queue size limit */ 1021 u_int16_t flags; /* misc flags */ 1022 union { 1023 struct cbq_opts cbq_opts; 1024 struct priq_opts priq_opts; 1025 struct hfsc_opts hfsc_opts; 1026 } pq_u; 1027 1028 u_int32_t qid; /* return value */ 1029 }; 1030 1031 struct pf_tag { 1032 u_int16_t tag; /* tag id */ 1033 }; 1034 1035 struct pf_tagname { 1036 TAILQ_ENTRY(pf_tagname) entries; 1037 char name[PF_TAG_NAME_SIZE]; 1038 u_int16_t tag; 1039 int ref; 1040 }; 1041 1042 #define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */ 1043 #define PFFRAG_FRAG_HIWAT 1000 /* Number of fragmented packets */ 1044 #define PFFRAG_FRCENT_HIWAT 50000 /* Number of fragment cache entries */ 1045 #define PFFRAG_FRCACHE_HIWAT 10000 /* Number of fragment descriptors */ 1046 1047 /* 1048 * ioctl parameter structures 1049 */ 1050 1051 struct pfioc_pooladdr { 1052 u_int32_t action; 1053 u_int32_t ticket; 1054 u_int32_t nr; 1055 u_int32_t r_num; 1056 u_int8_t r_action; 1057 u_int8_t r_last; 1058 u_int8_t af; 1059 char anchor[PF_ANCHOR_NAME_SIZE]; 1060 char ruleset[PF_RULESET_NAME_SIZE]; 1061 struct pf_pooladdr addr; 1062 }; 1063 1064 struct pfioc_rule { 1065 u_int32_t action; 1066 u_int32_t ticket; 1067 u_int32_t pool_ticket; 1068 u_int32_t nr; 1069 char anchor[PF_ANCHOR_NAME_SIZE]; 1070 char ruleset[PF_RULESET_NAME_SIZE]; 1071 struct pf_rule rule; 1072 }; 1073 1074 struct pfioc_natlook { 1075 struct pf_addr saddr; 1076 struct pf_addr daddr; 1077 struct pf_addr rsaddr; 1078 struct pf_addr rdaddr; 1079 u_int16_t sport; 1080 u_int16_t dport; 1081 u_int16_t rsport; 1082 u_int16_t rdport; 1083 sa_family_t af; 1084 u_int8_t proto; 1085 u_int8_t direction; 1086 }; 1087 1088 struct pfioc_state { 1089 u_int32_t nr; 1090 struct pf_state state; 1091 }; 1092 1093 struct pfioc_state_kill { 1094 /* XXX returns the number of states killed in psk_af */ 1095 sa_family_t psk_af; 1096 int psk_proto; 1097 struct pf_rule_addr psk_src; 1098 struct pf_rule_addr psk_dst; 1099 char psk_ifname[IFNAMSIZ]; 1100 }; 1101 1102 struct pfioc_states { 1103 int ps_len; 1104 union { 1105 caddr_t psu_buf; 1106 struct pf_state *psu_states; 1107 } ps_u; 1108 #define ps_buf ps_u.psu_buf 1109 #define ps_states ps_u.psu_states 1110 }; 1111 1112 struct pfioc_src_nodes { 1113 int psn_len; 1114 union { 1115 caddr_t psu_buf; 1116 struct pf_src_node *psu_src_nodes; 1117 } psn_u; 1118 #define psn_buf psn_u.psu_buf 1119 #define psn_src_nodes psn_u.psu_src_nodes 1120 }; 1121 1122 struct pfioc_if { 1123 char ifname[IFNAMSIZ]; 1124 }; 1125 1126 struct pfioc_tm { 1127 int timeout; 1128 int seconds; 1129 }; 1130 1131 struct pfioc_limit { 1132 int index; 1133 unsigned limit; 1134 }; 1135 1136 struct pfioc_altq { 1137 u_int32_t action; 1138 u_int32_t ticket; 1139 u_int32_t nr; 1140 struct pf_altq altq; 1141 }; 1142 1143 struct pfioc_qstats { 1144 u_int32_t ticket; 1145 u_int32_t nr; 1146 void *buf; 1147 int nbytes; 1148 u_int8_t scheduler; 1149 }; 1150 1151 struct pfioc_anchor { 1152 u_int32_t nr; 1153 char name[PF_ANCHOR_NAME_SIZE]; 1154 }; 1155 1156 struct pfioc_ruleset { 1157 u_int32_t nr; 1158 char anchor[PF_ANCHOR_NAME_SIZE]; 1159 char name[PF_RULESET_NAME_SIZE]; 1160 }; 1161 1162 #define PF_RULESET_ALTQ (PF_RULESET_MAX) 1163 #define PF_RULESET_TABLE (PF_RULESET_MAX+1) 1164 struct pfioc_trans { 1165 int size; /* number of elements */ 1166 int esize; /* size of each element in bytes */ 1167 struct pfioc_trans_e { 1168 int rs_num; 1169 char anchor[PF_ANCHOR_NAME_SIZE]; 1170 char ruleset[PF_RULESET_NAME_SIZE]; 1171 u_int32_t ticket; 1172 } *array; 1173 }; 1174 1175 #define PFR_FLAG_ATOMIC 0x00000001 1176 #define PFR_FLAG_DUMMY 0x00000002 1177 #define PFR_FLAG_FEEDBACK 0x00000004 1178 #define PFR_FLAG_CLSTATS 0x00000008 1179 #define PFR_FLAG_ADDRSTOO 0x00000010 1180 #define PFR_FLAG_REPLACE 0x00000020 1181 #define PFR_FLAG_ALLRSETS 0x00000040 1182 #define PFR_FLAG_ALLMASK 0x0000007F 1183 #ifdef _KERNEL 1184 #define PFR_FLAG_USERIOCTL 0x10000000 1185 #endif 1186 1187 struct pfioc_table { 1188 struct pfr_table pfrio_table; 1189 void *pfrio_buffer; 1190 int pfrio_esize; 1191 int pfrio_size; 1192 int pfrio_size2; 1193 int pfrio_nadd; 1194 int pfrio_ndel; 1195 int pfrio_nchange; 1196 int pfrio_flags; 1197 u_int32_t pfrio_ticket; 1198 }; 1199 #define pfrio_exists pfrio_nadd 1200 #define pfrio_nzero pfrio_nadd 1201 #define pfrio_nmatch pfrio_nadd 1202 #define pfrio_naddr pfrio_size2 1203 #define pfrio_setflag pfrio_size2 1204 #define pfrio_clrflag pfrio_nadd 1205 1206 1207 #define PFI_FLAG_GROUP 0x0001 /* gets groups of interfaces */ 1208 #define PFI_FLAG_INSTANCE 0x0002 /* gets single interfaces */ 1209 #define PFI_FLAG_ALLMASK 0x0003 1210 1211 struct pfioc_iface { 1212 char pfiio_name[IFNAMSIZ]; 1213 void *pfiio_buffer; 1214 int pfiio_esize; 1215 int pfiio_size; 1216 int pfiio_nzero; 1217 int pfiio_flags; 1218 }; 1219 1220 1221 /* 1222 * ioctl operations 1223 */ 1224 1225 #define DIOCSTART _IO ('D', 1) 1226 #define DIOCSTOP _IO ('D', 2) 1227 #define DIOCBEGINRULES _IOWR('D', 3, struct pfioc_rule) 1228 #define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule) 1229 #define DIOCCOMMITRULES _IOWR('D', 5, struct pfioc_rule) 1230 #define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule) 1231 #define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule) 1232 /* XXX cut 8 - 17 */ 1233 #define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill) 1234 #define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state) 1235 #define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if) 1236 #define DIOCGETSTATUS _IOWR('D', 21, struct pf_status) 1237 #define DIOCCLRSTATUS _IO ('D', 22) 1238 #define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook) 1239 #define DIOCSETDEBUG _IOWR('D', 24, u_int32_t) 1240 #define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states) 1241 #define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule) 1242 /* XXX cut 26 - 28 */ 1243 #define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm) 1244 #define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm) 1245 #define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state) 1246 #define DIOCCLRRULECTRS _IO ('D', 38) 1247 #define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit) 1248 #define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit) 1249 #define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill) 1250 #define DIOCSTARTALTQ _IO ('D', 42) 1251 #define DIOCSTOPALTQ _IO ('D', 43) 1252 #define DIOCBEGINALTQS _IOWR('D', 44, u_int32_t) 1253 #define DIOCADDALTQ _IOWR('D', 45, struct pfioc_altq) 1254 #define DIOCCOMMITALTQS _IOWR('D', 46, u_int32_t) 1255 #define DIOCGETALTQS _IOWR('D', 47, struct pfioc_altq) 1256 #define DIOCGETALTQ _IOWR('D', 48, struct pfioc_altq) 1257 #define DIOCCHANGEALTQ _IOWR('D', 49, struct pfioc_altq) 1258 #define DIOCGETQSTATS _IOWR('D', 50, struct pfioc_qstats) 1259 #define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr) 1260 #define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr) 1261 #define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr) 1262 #define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr) 1263 #define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr) 1264 #define DIOCGETANCHORS _IOWR('D', 56, struct pfioc_anchor) 1265 #define DIOCGETANCHOR _IOWR('D', 57, struct pfioc_anchor) 1266 #define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset) 1267 #define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset) 1268 #define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table) 1269 #define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table) 1270 #define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table) 1271 #define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table) 1272 #define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table) 1273 #define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table) 1274 #define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table) 1275 #define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table) 1276 #define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table) 1277 #define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table) 1278 #define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table) 1279 #define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table) 1280 #define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table) 1281 #define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table) 1282 #define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table) 1283 #define DIOCRINABEGIN _IOWR('D', 75, struct pfioc_table) 1284 #define DIOCRINACOMMIT _IOWR('D', 76, struct pfioc_table) 1285 #define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table) 1286 #define DIOCOSFPFLUSH _IO('D', 78) 1287 #define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl) 1288 #define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl) 1289 #define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans) 1290 #define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans) 1291 #define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans) 1292 #define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes) 1293 #define DIOCCLRSRCNODES _IO('D', 85) 1294 #define DIOCSETHOSTID _IOWR('D', 86, u_int32_t) 1295 #define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface) 1296 #define DIOCICLRISTATS _IOWR('D', 88, struct pfioc_iface) 1297 1298 #ifdef _KERNEL 1299 RB_HEAD(pf_src_tree, pf_src_node); 1300 RB_PROTOTYPE(pf_src_tree, pf_src_node, entry, pf_src_compare); 1301 extern struct pf_src_tree tree_src_tracking; 1302 1303 RB_HEAD(pf_state_tree_id, pf_state); 1304 RB_PROTOTYPE(pf_state_tree_id, pf_state, 1305 entry_id, pf_state_compare_id); 1306 extern struct pf_state_tree_id tree_id; 1307 extern struct pf_state_queue state_updates; 1308 1309 extern struct pf_anchorqueue pf_anchors; 1310 extern struct pf_ruleset pf_main_ruleset; 1311 TAILQ_HEAD(pf_poolqueue, pf_pool); 1312 extern struct pf_poolqueue pf_pools[2]; 1313 TAILQ_HEAD(pf_altqqueue, pf_altq); 1314 extern struct pf_altqqueue pf_altqs[2]; 1315 extern struct pf_palist pf_pabuf; 1316 extern struct pfi_kif **pfi_index2kif; 1317 1318 extern u_int32_t ticket_altqs_active; 1319 extern u_int32_t ticket_altqs_inactive; 1320 extern int altqs_inactive_open; 1321 extern u_int32_t ticket_pabuf; 1322 extern struct pf_altqqueue *pf_altqs_active; 1323 extern struct pf_altqqueue *pf_altqs_inactive; 1324 extern struct pf_poolqueue *pf_pools_active; 1325 extern struct pf_poolqueue *pf_pools_inactive; 1326 extern int pf_tbladdr_setup(struct pf_ruleset *, 1327 struct pf_addr_wrap *); 1328 extern void pf_tbladdr_remove(struct pf_addr_wrap *); 1329 extern void pf_tbladdr_copyout(struct pf_addr_wrap *); 1330 extern void pf_calc_skip_steps(struct pf_rulequeue *); 1331 extern void pf_update_anchor_rules(void); 1332 extern struct pool pf_src_tree_pl, pf_rule_pl; 1333 extern struct pool pf_state_pl, pf_altq_pl, pf_pooladdr_pl; 1334 extern struct pool pf_state_scrub_pl; 1335 extern void pf_purge_timeout(void *); 1336 extern void pf_purge_expired_src_nodes(void); 1337 extern void pf_purge_expired_states(void); 1338 extern int pf_insert_state(struct pfi_kif *, 1339 struct pf_state *); 1340 extern int pf_insert_src_node(struct pf_src_node **, 1341 struct pf_rule *, struct pf_addr *, 1342 sa_family_t); 1343 void pf_src_tree_remove_state(struct pf_state *); 1344 extern struct pf_state *pf_find_state_byid(struct pf_state *); 1345 extern struct pf_state *pf_find_state_all(struct pf_state *key, 1346 u_int8_t tree, int *more); 1347 extern struct pf_anchor *pf_find_anchor(const char *); 1348 extern struct pf_ruleset *pf_find_ruleset(char *, char *); 1349 extern struct pf_ruleset *pf_find_or_create_ruleset( 1350 char[PF_ANCHOR_NAME_SIZE], 1351 char[PF_RULESET_NAME_SIZE]); 1352 extern void pf_remove_if_empty_ruleset( 1353 struct pf_ruleset *); 1354 1355 extern struct ifnet *sync_ifp; 1356 extern struct pf_rule pf_default_rule; 1357 extern void pf_addrcpy(struct pf_addr *, struct pf_addr *, 1358 u_int8_t); 1359 void pf_rm_rule(struct pf_rulequeue *, 1360 struct pf_rule *); 1361 1362 #ifdef INET 1363 int pf_test(int, struct ifnet *, struct mbuf **); 1364 #endif /* INET */ 1365 1366 #ifdef INET6 1367 int pf_test6(int, struct ifnet *, struct mbuf **); 1368 void pf_poolmask(struct pf_addr *, struct pf_addr*, 1369 struct pf_addr *, struct pf_addr *, u_int8_t); 1370 void pf_addr_inc(struct pf_addr *, sa_family_t); 1371 #endif /* INET6 */ 1372 1373 void *pf_pull_hdr(struct mbuf *, int, void *, int, u_short *, u_short *, 1374 sa_family_t); 1375 void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t); 1376 int pflog_packet(struct pfi_kif *, struct mbuf *, sa_family_t, u_int8_t, 1377 u_int8_t, struct pf_rule *, struct pf_rule *, struct pf_ruleset *); 1378 int pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *, 1379 struct pf_addr *, sa_family_t); 1380 int pf_match(u_int8_t, u_int32_t, u_int32_t, u_int32_t); 1381 int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t); 1382 int pf_match_uid(u_int8_t, uid_t, uid_t, uid_t); 1383 int pf_match_gid(u_int8_t, gid_t, gid_t, gid_t); 1384 1385 void pf_normalize_init(void); 1386 #ifdef _LKM 1387 void pf_normalize_destroy(void); 1388 #endif 1389 int pf_normalize_ip(struct mbuf **, int, struct pfi_kif *, u_short *); 1390 int pf_normalize_ip6(struct mbuf **, int, struct pfi_kif *, u_short *); 1391 int pf_normalize_tcp(int, struct pfi_kif *, struct mbuf *, int, int, void *, 1392 struct pf_pdesc *); 1393 void pf_normalize_tcp_cleanup(struct pf_state *); 1394 int pf_normalize_tcp_init(struct mbuf *, int, struct pf_pdesc *, 1395 struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *); 1396 int pf_normalize_tcp_stateful(struct mbuf *, int, struct pf_pdesc *, 1397 u_short *, struct tcphdr *, struct pf_state_peer *, 1398 struct pf_state_peer *, int *); 1399 u_int32_t 1400 pf_state_expires(const struct pf_state *); 1401 void pf_purge_expired_fragments(void); 1402 int pf_routable(struct pf_addr *addr, sa_family_t af); 1403 void pfr_initialize(void); 1404 #ifdef _LKM 1405 void pfr_destroy(void); 1406 #endif 1407 int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t); 1408 void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t, 1409 u_int64_t, int, int, int); 1410 int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, 1411 struct pf_addr **, struct pf_addr **, sa_family_t); 1412 void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *); 1413 struct pfr_ktable * 1414 pfr_attach_table(struct pf_ruleset *, char *); 1415 void pfr_detach_table(struct pfr_ktable *); 1416 int pfr_clr_tables(struct pfr_table *, int *, int); 1417 int pfr_add_tables(struct pfr_table *, int, int *, int); 1418 int pfr_del_tables(struct pfr_table *, int, int *, int); 1419 int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int); 1420 int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int); 1421 int pfr_clr_tstats(struct pfr_table *, int, int *, int); 1422 int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int); 1423 int pfr_clr_addrs(struct pfr_table *, int *, int); 1424 int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1425 int); 1426 int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1427 int); 1428 int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1429 int *, int *, int *, int); 1430 int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int); 1431 int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int); 1432 int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *, 1433 int); 1434 int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1435 int); 1436 int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int); 1437 int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int); 1438 int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int); 1439 int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *, 1440 int *, u_int32_t, int); 1441 1442 void pfi_initialize(void); 1443 #ifdef _LKM 1444 void pfi_destroy(void); 1445 #endif 1446 void pfi_attach_clone(struct if_clone *); 1447 void pfi_attach_ifnet(struct ifnet *); 1448 void pfi_detach_ifnet(struct ifnet *); 1449 struct pfi_kif *pfi_lookup_create(const char *); 1450 struct pfi_kif *pfi_lookup_if(const char *); 1451 int pfi_maybe_destroy(struct pfi_kif *); 1452 struct pfi_kif *pfi_attach_rule(const char *); 1453 void pfi_detach_rule(struct pfi_kif *); 1454 void pfi_attach_state(struct pfi_kif *); 1455 void pfi_detach_state(struct pfi_kif *); 1456 int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t); 1457 void pfi_dynaddr_copyout(struct pf_addr_wrap *); 1458 void pfi_dynaddr_remove(struct pf_addr_wrap *); 1459 void pfi_fill_oldstatus(struct pf_status *); 1460 int pfi_clr_istats(const char *, int *, int); 1461 int pfi_get_ifaces(const char *, struct pfi_if *, int *, int); 1462 int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *, 1463 sa_family_t); 1464 1465 extern struct pfi_statehead pfi_statehead; 1466 1467 u_int16_t pf_tagname2tag(char *); 1468 void pf_tag2tagname(u_int16_t, char *); 1469 void pf_tag_unref(u_int16_t); 1470 int pf_tag_packet(struct mbuf *, struct pf_tag *, int); 1471 u_int32_t pf_qname2qid(char *); 1472 void pf_qid2qname(u_int32_t, char *); 1473 void pf_qid_unref(u_int32_t); 1474 1475 extern struct pf_status pf_status; 1476 extern struct pool pf_frent_pl, pf_frag_pl; 1477 1478 struct pf_pool_limit { 1479 void *pp; 1480 unsigned limit; 1481 }; 1482 extern struct pf_pool_limit pf_pool_limits[PF_LIMIT_MAX]; 1483 1484 #ifdef __NetBSD__ 1485 int pfil4_wrapper(void *, struct mbuf **, struct ifnet *, int); 1486 int pfil6_wrapper(void *, struct mbuf **, struct ifnet *, int); 1487 int pfil_ifnet_wrapper(void *, struct mbuf **, struct ifnet *, int); 1488 int pfil_ifaddr_wrapper(void *, struct mbuf **, struct ifnet *, int); 1489 #endif 1490 #endif /* _KERNEL */ 1491 1492 /* The fingerprint functions can be linked into userland programs (tcpdump) */ 1493 int pf_osfp_add(struct pf_osfp_ioctl *); 1494 #ifdef _KERNEL 1495 struct pf_osfp_enlist * 1496 pf_osfp_fingerprint(struct pf_pdesc *, struct mbuf *, int, 1497 const struct tcphdr *); 1498 #endif /* _KERNEL */ 1499 struct pf_osfp_enlist * 1500 pf_osfp_fingerprint_hdr(const struct ip *, const struct tcphdr *); 1501 void pf_osfp_flush(void); 1502 int pf_osfp_get(struct pf_osfp_ioctl *); 1503 void pf_osfp_initialize(void); 1504 #ifdef _LKM 1505 void pf_osfp_destroy(void); 1506 #endif 1507 int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t); 1508 struct pf_os_fingerprint * 1509 pf_osfp_validate(void); 1510 1511 1512 #endif /* _NET_PFVAR_H_ */ 1513
Indexes created Mon Sep 29 18:09:42 GMT 2025