1 /* $FreeBSD: src/sys/contrib/pf/net/pfvar.h,v 1.8 2004/08/12 13:59:44 mlaier Exp $ */ 2 /* $OpenBSD: pfvar.h,v 1.187 2004/03/22 04:54:18 mcbride Exp $ */ 3 /* add $OpenBSD: pfvar.h,v 1.194 2004/05/11 07:34:11 dhartmei Exp $ */ 4 /* $DragonFly: src/sys/net/pf/pfvar.h,v 1.3 2005/06/15 16:32:58 joerg Exp $ */ 5 6 /* 7 * Copyright (c) 2004 The DragonFly Project. All rights reserved. 8 * 9 * Copyright (c) 2001 Daniel Hartmeier 10 * All rights reserved. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 16 * - Redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer. 18 * - Redistributions in binary form must reproduce the above 19 * copyright notice, this list of conditions and the following 20 * disclaimer in the documentation and/or other materials provided 21 * with the distribution. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 24 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 25 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 26 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 27 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 28 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 29 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 30 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 31 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 33 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 34 * POSSIBILITY OF SUCH DAMAGE. 35 * 36 */ 37 38 #ifndef _NET_PFVAR_H_ 39 #define _NET_PFVAR_H_ 40 41 #include <sys/types.h> 42 #include <sys/queue.h> 43 #include <sys/tree.h> 44 45 #include <net/radix.h> 46 #include <netinet/in.h> 47 48 #ifdef _KERNEL 49 #include <vm/vm_zone.h> 50 #endif 51 52 /* 53 * XXX 54 * If we include <netipsec/keydb.h>, we need _KERNEL definition. 55 * This makes pfctl compilation difficult. 56 */ 57 union sockaddr_union { 58 struct sockaddr sa; 59 struct sockaddr_in sin; 60 struct sockaddr_in6 sin6; 61 }; 62 63 #include <netinet/tcp_fsm.h> 64 65 struct ip; 66 67 #define PF_TCPS_PROXY_SRC ((TCP_NSTATES)+0) 68 #define PF_TCPS_PROXY_DST ((TCP_NSTATES)+1) 69 70 enum { PF_INOUT, PF_IN, PF_OUT }; 71 enum { PF_LAN_EXT, PF_EXT_GWY, PF_ID }; 72 enum { PF_PASS, PF_DROP, PF_SCRUB, PF_NAT, PF_NONAT, 73 PF_BINAT, PF_NOBINAT, PF_RDR, PF_NORDR, PF_SYNPROXY_DROP }; 74 enum { PF_RULESET_SCRUB, PF_RULESET_FILTER, PF_RULESET_NAT, 75 PF_RULESET_BINAT, PF_RULESET_RDR, PF_RULESET_MAX }; 76 enum { PF_OP_NONE, PF_OP_IRG, PF_OP_EQ, PF_OP_NE, PF_OP_LT, 77 PF_OP_LE, PF_OP_GT, PF_OP_GE, PF_OP_XRG, PF_OP_RRG }; 78 enum { PF_DEBUG_NONE, PF_DEBUG_URGENT, PF_DEBUG_MISC, PF_DEBUG_NOISY }; 79 enum { PF_CHANGE_NONE, PF_CHANGE_ADD_HEAD, PF_CHANGE_ADD_TAIL, 80 PF_CHANGE_ADD_BEFORE, PF_CHANGE_ADD_AFTER, 81 PF_CHANGE_REMOVE, PF_CHANGE_GET_TICKET }; 82 /* 83 * Note about PFTM_*: real indices into pf_rule.timeout[] come before 84 * PFTM_MAX, special cases afterwards. See pf_state_expires(). 85 */ 86 enum { PFTM_TCP_FIRST_PACKET, PFTM_TCP_OPENING, PFTM_TCP_ESTABLISHED, 87 PFTM_TCP_CLOSING, PFTM_TCP_FIN_WAIT, PFTM_TCP_CLOSED, 88 PFTM_UDP_FIRST_PACKET, PFTM_UDP_SINGLE, PFTM_UDP_MULTIPLE, 89 PFTM_ICMP_FIRST_PACKET, PFTM_ICMP_ERROR_REPLY, 90 PFTM_OTHER_FIRST_PACKET, PFTM_OTHER_SINGLE, 91 PFTM_OTHER_MULTIPLE, PFTM_FRAG, PFTM_INTERVAL, 92 PFTM_ADAPTIVE_START, PFTM_ADAPTIVE_END, PFTM_SRC_NODE, 93 PFTM_MAX, PFTM_PURGE, PFTM_UNTIL_PACKET }; 94 enum { PF_NOPFROUTE, PF_FASTROUTE, PF_ROUTETO, PF_DUPTO, PF_REPLYTO }; 95 enum { PF_LIMIT_STATES, PF_LIMIT_SRC_NODES, PF_LIMIT_FRAGS, PF_LIMIT_MAX }; 96 #define PF_POOL_IDMASK 0x0f 97 enum { PF_POOL_NONE, PF_POOL_BITMASK, PF_POOL_RANDOM, 98 PF_POOL_SRCHASH, PF_POOL_ROUNDROBIN }; 99 enum { PF_ADDR_ADDRMASK, PF_ADDR_NOROUTE, PF_ADDR_DYNIFTL, 100 PF_ADDR_TABLE }; 101 #define PF_POOL_TYPEMASK 0x0f 102 #define PF_POOL_STICKYADDR 0x20 103 #define PF_WSCALE_FLAG 0x80 104 #define PF_WSCALE_MASK 0x0f 105 106 struct pf_addr { 107 union { 108 struct in_addr v4; 109 struct in6_addr v6; 110 u_int8_t addr8[16]; 111 u_int16_t addr16[8]; 112 u_int32_t addr32[4]; 113 } pfa; /* 128-bit address */ 114 #define v4 pfa.v4 115 #define v6 pfa.v6 116 #define addr8 pfa.addr8 117 #define addr16 pfa.addr16 118 #define addr32 pfa.addr32 119 }; 120 121 #define PF_TABLE_NAME_SIZE 32 122 123 #define PFI_AFLAG_NETWORK 0x01 124 #define PFI_AFLAG_BROADCAST 0x02 125 #define PFI_AFLAG_PEER 0x04 126 #define PFI_AFLAG_MODEMASK 0x07 127 #define PFI_AFLAG_NOALIAS 0x08 128 129 struct pf_addr_wrap { 130 union { 131 struct { 132 struct pf_addr addr; 133 struct pf_addr mask; 134 } a; 135 char ifname[IFNAMSIZ]; 136 char tblname[PF_TABLE_NAME_SIZE]; 137 } v; 138 union { 139 struct pfi_dynaddr *dyn; 140 struct pfr_ktable *tbl; 141 int dyncnt; 142 int tblcnt; 143 } p; 144 u_int8_t type; /* PF_ADDR_* */ 145 u_int8_t iflags; /* PFI_AFLAG_* */ 146 }; 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 /* XXX correct values for zinit? */ 170 #define ZONE_CREATE(var, type, desc) \ 171 var = zinit(desc, sizeof(type), 1, 0, 1); \ 172 if (var == NULL) break 173 #define ZONE_DESTROY(a) /* XXX */ 174 175 #define pool_get(p, f) zalloc(*(p)) 176 #define pool_put(p, o) zfree(*(p), (o)) 177 178 #define PF_NAME "pf" 179 180 #define PF_MODVER 1 181 #define PFLOG_MODVER 1 182 #define PFSYNC_MODVER 1 183 184 #define PFLOG_MINVER 1 185 #define PFLOG_PREFVER PFLOG_MODVER 186 #define PFLOG_MAXVER 1 187 #define PFSYNC_MINVER 1 188 #define PFSYNC_PREFVER PFSYNC_MODVER 189 #define PFSYNC_MAXVER 1 190 191 /* prototyped for pf_subr.c */ 192 struct hook_desc { 193 TAILQ_ENTRY(hook_desc) hd_list; 194 void (*hd_fn)(void *); 195 void *hd_arg; 196 }; 197 TAILQ_HEAD(hook_desc_head, hook_desc); 198 199 void *hook_establish(struct hook_desc_head *, int, void (*)(void *), void *); 200 void hook_disestablish(struct hook_desc_head *, void *); 201 void dohooks(struct hook_desc_head *, int); 202 203 #define HOOK_REMOVE 0x01 204 #define HOOK_FREE 0x02 205 206 #ifdef INET 207 #ifndef INET6 208 #define PF_INET_ONLY 209 #endif /* ! INET6 */ 210 #endif /* INET */ 211 212 #ifdef INET6 213 #ifndef INET 214 #define PF_INET6_ONLY 215 #endif /* ! INET */ 216 #endif /* INET6 */ 217 218 #ifdef INET 219 #ifdef INET6 220 #define PF_INET_INET6 221 #endif /* INET6 */ 222 #endif /* INET */ 223 224 #else 225 226 #define PF_INET_INET6 227 228 #endif /* _KERNEL */ 229 230 /* Both IPv4 and IPv6 */ 231 #ifdef PF_INET_INET6 232 233 #define PF_AEQ(a, b, c) \ 234 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \ 235 ((a)->addr32[3] == (b)->addr32[3] && \ 236 (a)->addr32[2] == (b)->addr32[2] && \ 237 (a)->addr32[1] == (b)->addr32[1] && \ 238 (a)->addr32[0] == (b)->addr32[0])) \ 239 240 #define PF_ANEQ(a, b, c) \ 241 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \ 242 ((a)->addr32[3] != (b)->addr32[3] || \ 243 (a)->addr32[2] != (b)->addr32[2] || \ 244 (a)->addr32[1] != (b)->addr32[1] || \ 245 (a)->addr32[0] != (b)->addr32[0])) \ 246 247 #define PF_AZERO(a, c) \ 248 ((c == AF_INET && !(a)->addr32[0]) || \ 249 (!(a)->addr32[0] && !(a)->addr32[1] && \ 250 !(a)->addr32[2] && !(a)->addr32[3] )) \ 251 252 #define PF_MATCHA(n, a, m, b, f) \ 253 pf_match_addr(n, a, m, b, f) 254 255 #define PF_ACPY(a, b, f) \ 256 pf_addrcpy(a, b, f) 257 258 #define PF_AINC(a, f) \ 259 pf_addr_inc(a, f) 260 261 #define PF_POOLMASK(a, b, c, d, f) \ 262 pf_poolmask(a, b, c, d, f) 263 264 #else 265 266 /* Just IPv6 */ 267 268 #ifdef PF_INET6_ONLY 269 270 #define PF_AEQ(a, b, c) \ 271 ((a)->addr32[3] == (b)->addr32[3] && \ 272 (a)->addr32[2] == (b)->addr32[2] && \ 273 (a)->addr32[1] == (b)->addr32[1] && \ 274 (a)->addr32[0] == (b)->addr32[0]) \ 275 276 #define PF_ANEQ(a, b, c) \ 277 ((a)->addr32[3] != (b)->addr32[3] || \ 278 (a)->addr32[2] != (b)->addr32[2] || \ 279 (a)->addr32[1] != (b)->addr32[1] || \ 280 (a)->addr32[0] != (b)->addr32[0]) \ 281 282 #define PF_AZERO(a, c) \ 283 (!(a)->addr32[0] && \ 284 !(a)->addr32[1] && \ 285 !(a)->addr32[2] && \ 286 !(a)->addr32[3] ) \ 287 288 #define PF_MATCHA(n, a, m, b, f) \ 289 pf_match_addr(n, a, m, b, f) 290 291 #define PF_ACPY(a, b, f) \ 292 pf_addrcpy(a, b, f) 293 294 #define PF_AINC(a, f) \ 295 pf_addr_inc(a, f) 296 297 #define PF_POOLMASK(a, b, c, d, f) \ 298 pf_poolmask(a, b, c, d, f) 299 300 #else 301 302 /* Just IPv4 */ 303 #ifdef PF_INET_ONLY 304 305 #define PF_AEQ(a, b, c) \ 306 ((a)->addr32[0] == (b)->addr32[0]) 307 308 #define PF_ANEQ(a, b, c) \ 309 ((a)->addr32[0] != (b)->addr32[0]) 310 311 #define PF_AZERO(a, c) \ 312 (!(a)->addr32[0]) 313 314 #define PF_MATCHA(n, a, m, b, f) \ 315 pf_match_addr(n, a, m, b, f) 316 317 #define PF_ACPY(a, b, f) \ 318 (a)->v4.s_addr = (b)->v4.s_addr 319 320 #define PF_AINC(a, f) \ 321 do { \ 322 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \ 323 } while (0) 324 325 #define PF_POOLMASK(a, b, c, d, f) \ 326 do { \ 327 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \ 328 (((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \ 329 } while (0) 330 331 #endif /* PF_INET_ONLY */ 332 #endif /* PF_INET6_ONLY */ 333 #endif /* PF_INET_INET6 */ 334 335 #define PF_MISMATCHAW(aw, x, af, not) \ 336 ( \ 337 (((aw)->type == PF_ADDR_NOROUTE && \ 338 pf_routable((x), (af))) || \ 339 ((aw)->type == PF_ADDR_TABLE && \ 340 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \ 341 ((aw)->type == PF_ADDR_DYNIFTL && \ 342 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \ 343 ((aw)->type == PF_ADDR_ADDRMASK && \ 344 !PF_AZERO(&(aw)->v.a.mask, (af)) && \ 345 !PF_MATCHA(0, &(aw)->v.a.addr, \ 346 &(aw)->v.a.mask, (x), (af)))) != \ 347 (not) \ 348 ) 349 350 struct pf_rule_uid { 351 uid_t uid[2]; 352 u_int8_t op; 353 }; 354 355 struct pf_rule_gid { 356 uid_t gid[2]; 357 u_int8_t op; 358 }; 359 360 struct pf_rule_addr { 361 struct pf_addr_wrap addr; 362 u_int16_t port[2]; 363 u_int8_t not; 364 u_int8_t port_op; 365 }; 366 367 struct pf_pooladdr { 368 struct pf_addr_wrap addr; 369 TAILQ_ENTRY(pf_pooladdr) entries; 370 char ifname[IFNAMSIZ]; 371 struct pfi_kif *kif; 372 }; 373 374 TAILQ_HEAD(pf_palist, pf_pooladdr); 375 376 struct pf_poolhashkey { 377 union { 378 u_int8_t key8[16]; 379 u_int16_t key16[8]; 380 u_int32_t key32[4]; 381 } pfk; /* 128-bit hash key */ 382 #define key8 pfk.key8 383 #define key16 pfk.key16 384 #define key32 pfk.key32 385 }; 386 387 struct pf_pool { 388 struct pf_palist list; 389 struct pf_pooladdr *cur; 390 struct pf_poolhashkey key; 391 struct pf_addr counter; 392 int tblidx; 393 u_int16_t proxy_port[2]; 394 u_int8_t port_op; 395 u_int8_t opts; 396 }; 397 398 399 /* A packed Operating System description for fingerprinting */ 400 typedef u_int32_t pf_osfp_t; 401 #define PF_OSFP_ANY ((pf_osfp_t)0) 402 #define PF_OSFP_UNKNOWN ((pf_osfp_t)-1) 403 #define PF_OSFP_NOMATCH ((pf_osfp_t)-2) 404 405 struct pf_osfp_entry { 406 SLIST_ENTRY(pf_osfp_entry) fp_entry; 407 pf_osfp_t fp_os; 408 int fp_enflags; 409 #define PF_OSFP_EXPANDED 0x001 /* expanded entry */ 410 #define PF_OSFP_GENERIC 0x002 /* generic signature */ 411 #define PF_OSFP_NODETAIL 0x004 /* no p0f details */ 412 #define PF_OSFP_LEN 32 413 char fp_class_nm[PF_OSFP_LEN]; 414 char fp_version_nm[PF_OSFP_LEN]; 415 char fp_subtype_nm[PF_OSFP_LEN]; 416 }; 417 #define PF_OSFP_ENTRY_EQ(a, b) \ 418 ((a)->fp_os == (b)->fp_os && \ 419 memcmp((a)->fp_class_nm, (b)->fp_class_nm, PF_OSFP_LEN) == 0 && \ 420 memcmp((a)->fp_version_nm, (b)->fp_version_nm, PF_OSFP_LEN) == 0 && \ 421 memcmp((a)->fp_subtype_nm, (b)->fp_subtype_nm, PF_OSFP_LEN) == 0) 422 423 /* handle pf_osfp_t packing */ 424 #define _FP_RESERVED_BIT 1 /* For the special negative #defines */ 425 #define _FP_UNUSED_BITS 1 426 #define _FP_CLASS_BITS 10 /* OS Class (Windows, Linux) */ 427 #define _FP_VERSION_BITS 10 /* OS version (95, 98, NT, 2.4.54, 3.2) */ 428 #define _FP_SUBTYPE_BITS 10 /* patch level (NT SP4, SP3, ECN patch) */ 429 #define PF_OSFP_UNPACK(osfp, class, version, subtype) do { \ 430 (class) = ((osfp) >> (_FP_VERSION_BITS+_FP_SUBTYPE_BITS)) & \ 431 ((1 << _FP_CLASS_BITS) - 1); \ 432 (version) = ((osfp) >> _FP_SUBTYPE_BITS) & \ 433 ((1 << _FP_VERSION_BITS) - 1);\ 434 (subtype) = (osfp) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 435 } while(0) 436 #define PF_OSFP_PACK(osfp, class, version, subtype) do { \ 437 (osfp) = ((class) & ((1 << _FP_CLASS_BITS) - 1)) << (_FP_VERSION_BITS \ 438 + _FP_SUBTYPE_BITS); \ 439 (osfp) |= ((version) & ((1 << _FP_VERSION_BITS) - 1)) << \ 440 _FP_SUBTYPE_BITS; \ 441 (osfp) |= (subtype) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 442 } while(0) 443 444 /* the fingerprint of an OSes TCP SYN packet */ 445 typedef u_int64_t pf_tcpopts_t; 446 struct pf_os_fingerprint { 447 SLIST_HEAD(pf_osfp_enlist, pf_osfp_entry) fp_oses; /* list of matches */ 448 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 449 u_int16_t fp_wsize; /* TCP window size */ 450 u_int16_t fp_psize; /* ip->ip_len */ 451 u_int16_t fp_mss; /* TCP MSS */ 452 u_int16_t fp_flags; 453 #define PF_OSFP_WSIZE_MOD 0x0001 /* Window modulus */ 454 #define PF_OSFP_WSIZE_DC 0x0002 /* Window don't care */ 455 #define PF_OSFP_WSIZE_MSS 0x0004 /* Window multiple of MSS */ 456 #define PF_OSFP_WSIZE_MTU 0x0008 /* Window multiple of MTU */ 457 #define PF_OSFP_PSIZE_MOD 0x0010 /* packet size modulus */ 458 #define PF_OSFP_PSIZE_DC 0x0020 /* packet size don't care */ 459 #define PF_OSFP_WSCALE 0x0040 /* TCP window scaling */ 460 #define PF_OSFP_WSCALE_MOD 0x0080 /* TCP window scale modulus */ 461 #define PF_OSFP_WSCALE_DC 0x0100 /* TCP window scale dont-care */ 462 #define PF_OSFP_MSS 0x0200 /* TCP MSS */ 463 #define PF_OSFP_MSS_MOD 0x0400 /* TCP MSS modulus */ 464 #define PF_OSFP_MSS_DC 0x0800 /* TCP MSS dont-care */ 465 #define PF_OSFP_DF 0x1000 /* IPv4 don't fragment bit */ 466 #define PF_OSFP_TS0 0x2000 /* Zero timestamp */ 467 u_int8_t fp_optcnt; /* TCP option count */ 468 u_int8_t fp_wscale; /* TCP window scaling */ 469 u_int8_t fp_ttl; /* IPv4 TTL */ 470 #define PF_OSFP_MAXTTL_OFFSET 40 471 /* TCP options packing */ 472 #define PF_OSFP_TCPOPT_NOP 0x0 /* TCP NOP option */ 473 #define PF_OSFP_TCPOPT_WSCALE 0x1 /* TCP window scaling option */ 474 #define PF_OSFP_TCPOPT_MSS 0x2 /* TCP max segment size opt */ 475 #define PF_OSFP_TCPOPT_SACK 0x3 /* TCP SACK OK option */ 476 #define PF_OSFP_TCPOPT_TS 0x4 /* TCP timestamp option */ 477 #define PF_OSFP_TCPOPT_BITS 3 /* bits used by each option */ 478 #define PF_OSFP_MAX_OPTS \ 479 (sizeof(((struct pf_os_fingerprint *)0)->fp_tcpopts) * 8) \ 480 / PF_OSFP_TCPOPT_BITS 481 482 SLIST_ENTRY(pf_os_fingerprint) fp_next; 483 }; 484 485 struct pf_osfp_ioctl { 486 struct pf_osfp_entry fp_os; 487 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 488 u_int16_t fp_wsize; /* TCP window size */ 489 u_int16_t fp_psize; /* ip->ip_len */ 490 u_int16_t fp_mss; /* TCP MSS */ 491 u_int16_t fp_flags; 492 u_int8_t fp_optcnt; /* TCP option count */ 493 u_int8_t fp_wscale; /* TCP window scaling */ 494 u_int8_t fp_ttl; /* IPv4 TTL */ 495 496 int fp_getnum; /* DIOCOSFPGET number */ 497 }; 498 499 500 union pf_rule_ptr { 501 struct pf_rule *ptr; 502 u_int32_t nr; 503 }; 504 505 struct pf_rule { 506 struct pf_rule_addr src; 507 struct pf_rule_addr dst; 508 #define PF_SKIP_IFP 0 509 #define PF_SKIP_DIR 1 510 #define PF_SKIP_AF 2 511 #define PF_SKIP_PROTO 3 512 #define PF_SKIP_SRC_ADDR 4 513 #define PF_SKIP_SRC_PORT 5 514 #define PF_SKIP_DST_ADDR 6 515 #define PF_SKIP_DST_PORT 7 516 #define PF_SKIP_COUNT 8 517 union pf_rule_ptr skip[PF_SKIP_COUNT]; 518 #define PF_RULE_LABEL_SIZE 64 519 char label[PF_RULE_LABEL_SIZE]; 520 #define PF_QNAME_SIZE 16 521 char ifname[IFNAMSIZ]; 522 char qname[PF_QNAME_SIZE]; 523 char pqname[PF_QNAME_SIZE]; 524 #define PF_ANCHOR_NAME_SIZE 16 525 char anchorname[PF_ANCHOR_NAME_SIZE]; 526 #define PF_TAG_NAME_SIZE 16 527 char tagname[PF_TAG_NAME_SIZE]; 528 char match_tagname[PF_TAG_NAME_SIZE]; 529 530 TAILQ_ENTRY(pf_rule) entries; 531 struct pf_pool rpool; 532 533 u_int64_t evaluations; 534 u_int64_t packets; 535 u_int64_t bytes; 536 537 struct pfi_kif *kif; 538 struct pf_anchor *anchor; 539 540 pf_osfp_t os_fingerprint; 541 542 u_int32_t timeout[PFTM_MAX]; 543 u_int32_t states; 544 u_int32_t max_states; 545 u_int32_t src_nodes; 546 u_int32_t max_src_nodes; 547 u_int32_t max_src_states; 548 u_int32_t qid; 549 u_int32_t pqid; 550 u_int32_t rt_listid; 551 u_int32_t nr; 552 553 u_int16_t return_icmp; 554 u_int16_t return_icmp6; 555 u_int16_t max_mss; 556 u_int16_t tag; 557 u_int16_t match_tag; 558 559 struct pf_rule_uid uid; 560 struct pf_rule_gid gid; 561 562 u_int32_t rule_flag; 563 u_int8_t action; 564 u_int8_t direction; 565 u_int8_t log; 566 u_int8_t quick; 567 u_int8_t ifnot; 568 u_int8_t match_tag_not; 569 u_int8_t natpass; 570 571 #define PF_STATE_NORMAL 0x1 572 #define PF_STATE_MODULATE 0x2 573 #define PF_STATE_SYNPROXY 0x3 574 u_int8_t keep_state; 575 sa_family_t af; 576 u_int8_t proto; 577 u_int8_t type; 578 u_int8_t code; 579 u_int8_t flags; 580 u_int8_t flagset; 581 u_int8_t min_ttl; 582 u_int8_t allow_opts; 583 u_int8_t rt; 584 u_int8_t return_ttl; 585 u_int8_t tos; 586 }; 587 588 /* rule flags */ 589 #define PFRULE_DROP 0x0000 590 #define PFRULE_RETURNRST 0x0001 591 #define PFRULE_FRAGMENT 0x0002 592 #define PFRULE_RETURNICMP 0x0004 593 #define PFRULE_RETURN 0x0008 594 #define PFRULE_NOSYNC 0x0010 595 #define PFRULE_SRCTRACK 0x0020 /* track source states */ 596 #define PFRULE_RULESRCTRACK 0x0040 /* per rule */ 597 598 /* scrub flags */ 599 #define PFRULE_NODF 0x0100 600 #define PFRULE_FRAGCROP 0x0200 /* non-buffering frag cache */ 601 #define PFRULE_FRAGDROP 0x0400 /* drop funny fragments */ 602 #define PFRULE_RANDOMID 0x0800 603 #define PFRULE_REASSEMBLE_TCP 0x1000 604 605 /* rule flags again */ 606 #define PFRULE_IFBOUND 0x00010000 /* if-bound */ 607 #define PFRULE_GRBOUND 0x00020000 /* group-bound */ 608 609 #define PFSTATE_HIWAT 10000 /* default state table size */ 610 611 struct pf_src_node { 612 RB_ENTRY(pf_src_node) entry; 613 struct pf_addr addr; 614 struct pf_addr raddr; 615 union pf_rule_ptr rule; 616 struct pfi_kif *kif; 617 u_int32_t bytes; 618 u_int32_t packets; 619 u_int32_t states; 620 u_int32_t creation; 621 u_int32_t expire; 622 sa_family_t af; 623 u_int8_t ruletype; 624 }; 625 626 #define PFSNODE_HIWAT 10000 /* default source node table size */ 627 628 struct pf_state_scrub { 629 u_int16_t pfss_flags; 630 #define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */ 631 u_int8_t pfss_ttl; /* stashed TTL */ 632 u_int8_t pad; 633 u_int32_t pfss_ts_mod; /* timestamp modulation */ 634 }; 635 636 struct pf_state_host { 637 struct pf_addr addr; 638 u_int16_t port; 639 u_int16_t pad; 640 }; 641 642 struct pf_state_peer { 643 u_int32_t seqlo; /* Max sequence number sent */ 644 u_int32_t seqhi; /* Max the other end ACKd + win */ 645 u_int32_t seqdiff; /* Sequence number modulator */ 646 u_int16_t max_win; /* largest window (pre scaling) */ 647 u_int8_t state; /* active state level */ 648 u_int8_t wscale; /* window scaling factor */ 649 u_int16_t mss; /* Maximum segment size option */ 650 struct pf_state_scrub *scrub; /* state is scrubbed */ 651 }; 652 653 TAILQ_HEAD(pf_state_queue, pf_state); 654 655 struct pf_state { 656 u_int64_t id; 657 union { 658 struct { 659 RB_ENTRY(pf_state) entry_lan_ext; 660 RB_ENTRY(pf_state) entry_ext_gwy; 661 RB_ENTRY(pf_state) entry_id; 662 TAILQ_ENTRY(pf_state) entry_updates; 663 struct pfi_kif *kif; 664 } s; 665 char ifname[IFNAMSIZ]; 666 } u; 667 struct pf_state_host lan; 668 struct pf_state_host gwy; 669 struct pf_state_host ext; 670 struct pf_state_peer src; 671 struct pf_state_peer dst; 672 union pf_rule_ptr rule; 673 union pf_rule_ptr anchor; 674 union pf_rule_ptr nat_rule; 675 struct pf_addr rt_addr; 676 struct pfi_kif *rt_kif; 677 struct pf_src_node *src_node; 678 struct pf_src_node *nat_src_node; 679 u_int32_t creation; 680 u_int32_t expire; 681 u_int32_t pfsync_time; 682 u_int32_t packets[2]; 683 u_int32_t bytes[2]; 684 u_int32_t creatorid; 685 sa_family_t af; 686 u_int8_t proto; 687 u_int8_t direction; 688 u_int8_t log; 689 u_int8_t allow_opts; 690 u_int8_t timeout; 691 u_int8_t sync_flags; 692 #define PFSTATE_NOSYNC 0x01 693 #define PFSTATE_FROMSYNC 0x02 694 u_int8_t pad; 695 }; 696 697 TAILQ_HEAD(pf_rulequeue, pf_rule); 698 699 struct pf_anchor; 700 701 struct pf_ruleset { 702 TAILQ_ENTRY(pf_ruleset) entries; 703 #define PF_RULESET_NAME_SIZE 16 704 char name[PF_RULESET_NAME_SIZE]; 705 struct { 706 struct pf_rulequeue queues[2]; 707 struct { 708 struct pf_rulequeue *ptr; 709 u_int32_t ticket; 710 int open; 711 } active, inactive; 712 } rules[PF_RULESET_MAX]; 713 struct pf_anchor *anchor; 714 u_int32_t tticket; 715 int tables; 716 int topen; 717 }; 718 719 TAILQ_HEAD(pf_rulesetqueue, pf_ruleset); 720 721 struct pf_anchor { 722 TAILQ_ENTRY(pf_anchor) entries; 723 char name[PF_ANCHOR_NAME_SIZE]; 724 struct pf_rulesetqueue rulesets; 725 int tables; 726 }; 727 728 TAILQ_HEAD(pf_anchorqueue, pf_anchor); 729 730 #define PF_RESERVED_ANCHOR "_pf" 731 #define PF_INTERFACE_RULESET "_if" 732 733 #define PFR_TFLAG_PERSIST 0x00000001 734 #define PFR_TFLAG_CONST 0x00000002 735 #define PFR_TFLAG_ACTIVE 0x00000004 736 #define PFR_TFLAG_INACTIVE 0x00000008 737 #define PFR_TFLAG_REFERENCED 0x00000010 738 #define PFR_TFLAG_REFDANCHOR 0x00000020 739 #define PFR_TFLAG_USRMASK 0x00000003 740 #define PFR_TFLAG_SETMASK 0x0000003C 741 #define PFR_TFLAG_ALLMASK 0x0000003F 742 743 struct pfr_table { 744 char pfrt_anchor[PF_ANCHOR_NAME_SIZE]; 745 char pfrt_ruleset[PF_RULESET_NAME_SIZE]; 746 char pfrt_name[PF_TABLE_NAME_SIZE]; 747 u_int32_t pfrt_flags; 748 u_int8_t pfrt_fback; 749 }; 750 751 enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED, 752 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE, 753 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_MAX }; 754 755 struct pfr_addr { 756 union { 757 struct in_addr _pfra_ip4addr; 758 struct in6_addr _pfra_ip6addr; 759 } pfra_u; 760 u_int8_t pfra_af; 761 u_int8_t pfra_net; 762 u_int8_t pfra_not; 763 u_int8_t pfra_fback; 764 }; 765 #define pfra_ip4addr pfra_u._pfra_ip4addr 766 #define pfra_ip6addr pfra_u._pfra_ip6addr 767 768 enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX }; 769 enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX }; 770 #define PFR_OP_XPASS PFR_OP_ADDR_MAX 771 772 struct pfr_astats { 773 struct pfr_addr pfras_a; 774 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 775 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 776 long pfras_tzero; 777 }; 778 779 enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX }; 780 781 struct pfr_tstats { 782 struct pfr_table pfrts_t; 783 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 784 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 785 u_int64_t pfrts_match; 786 u_int64_t pfrts_nomatch; 787 long pfrts_tzero; 788 int pfrts_cnt; 789 int pfrts_refcnt[PFR_REFCNT_MAX]; 790 }; 791 #define pfrts_name pfrts_t.pfrt_name 792 #define pfrts_flags pfrts_t.pfrt_flags 793 794 SLIST_HEAD(pfr_kentryworkq, pfr_kentry); 795 struct pfr_kentry { 796 struct radix_node pfrke_node[2]; 797 union sockaddr_union pfrke_sa; 798 u_int64_t pfrke_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 799 u_int64_t pfrke_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 800 SLIST_ENTRY(pfr_kentry) pfrke_workq; 801 long pfrke_tzero; 802 u_int8_t pfrke_af; 803 u_int8_t pfrke_net; 804 u_int8_t pfrke_not; 805 u_int8_t pfrke_mark; 806 }; 807 808 SLIST_HEAD(pfr_ktableworkq, pfr_ktable); 809 RB_HEAD(pfr_ktablehead, pfr_ktable); 810 struct pfr_ktable { 811 struct pfr_tstats pfrkt_ts; 812 RB_ENTRY(pfr_ktable) pfrkt_tree; 813 SLIST_ENTRY(pfr_ktable) pfrkt_workq; 814 struct radix_node_head *pfrkt_ip4; 815 struct radix_node_head *pfrkt_ip6; 816 struct pfr_ktable *pfrkt_shadow; 817 struct pfr_ktable *pfrkt_root; 818 struct pf_ruleset *pfrkt_rs; 819 long pfrkt_larg; 820 int pfrkt_nflags; 821 }; 822 #define pfrkt_t pfrkt_ts.pfrts_t 823 #define pfrkt_name pfrkt_t.pfrt_name 824 #define pfrkt_anchor pfrkt_t.pfrt_anchor 825 #define pfrkt_ruleset pfrkt_t.pfrt_ruleset 826 #define pfrkt_flags pfrkt_t.pfrt_flags 827 #define pfrkt_cnt pfrkt_ts.pfrts_cnt 828 #define pfrkt_refcnt pfrkt_ts.pfrts_refcnt 829 #define pfrkt_packets pfrkt_ts.pfrts_packets 830 #define pfrkt_bytes pfrkt_ts.pfrts_bytes 831 #define pfrkt_match pfrkt_ts.pfrts_match 832 #define pfrkt_nomatch pfrkt_ts.pfrts_nomatch 833 #define pfrkt_tzero pfrkt_ts.pfrts_tzero 834 835 RB_HEAD(pf_state_tree_lan_ext, pf_state); 836 RB_PROTOTYPE(pf_state_tree_lan_ext, pf_state, 837 u.s.entry_lan_ext, pf_state_compare_lan_ext); 838 839 RB_HEAD(pf_state_tree_ext_gwy, pf_state); 840 RB_PROTOTYPE(pf_state_tree_ext_gwy, pf_state, 841 u.s.entry_ext_gwy, pf_state_compare_ext_gwy); 842 843 struct pfi_if { 844 char pfif_name[IFNAMSIZ]; 845 u_int64_t pfif_packets[2][2][2]; 846 u_int64_t pfif_bytes[2][2][2]; 847 u_int64_t pfif_addcnt; 848 u_int64_t pfif_delcnt; 849 long pfif_tzero; 850 int pfif_states; 851 int pfif_rules; 852 int pfif_flags; 853 }; 854 855 TAILQ_HEAD(pfi_grouphead, pfi_kif); 856 TAILQ_HEAD(pfi_statehead, pfi_kif); 857 RB_HEAD(pfi_ifhead, pfi_kif); 858 struct pfi_kif { 859 struct pfi_if pfik_if; 860 RB_ENTRY(pfi_kif) pfik_tree; 861 struct pf_state_tree_lan_ext pfik_lan_ext; 862 struct pf_state_tree_ext_gwy pfik_ext_gwy; 863 struct pfi_grouphead pfik_grouphead; 864 TAILQ_ENTRY(pfi_kif) pfik_instances; 865 TAILQ_ENTRY(pfi_kif) pfik_w_states; 866 struct hook_desc_head *pfik_ah_head; 867 void *pfik_ah_cookie; 868 struct pfi_kif *pfik_parent; 869 struct ifnet *pfik_ifp; 870 int pfik_states; 871 int pfik_rules; 872 }; 873 #define pfik_name pfik_if.pfif_name 874 #define pfik_packets pfik_if.pfif_packets 875 #define pfik_bytes pfik_if.pfif_bytes 876 #define pfik_tzero pfik_if.pfif_tzero 877 #define pfik_flags pfik_if.pfif_flags 878 #define pfik_addcnt pfik_if.pfif_addcnt 879 #define pfik_delcnt pfik_if.pfif_delcnt 880 #define pfik_states pfik_if.pfif_states 881 #define pfik_rules pfik_if.pfif_rules 882 883 #define PFI_IFLAG_GROUP 0x0001 /* group of interfaces */ 884 #define PFI_IFLAG_INSTANCE 0x0002 /* single instance */ 885 #define PFI_IFLAG_CLONABLE 0x0010 /* clonable group */ 886 #define PFI_IFLAG_DYNAMIC 0x0020 /* dynamic group */ 887 #define PFI_IFLAG_ATTACHED 0x0040 /* interface attached */ 888 #define PFI_IFLAG_PLACEHOLDER 0x8000 /* placeholder group/interface */ 889 890 struct pf_pdesc { 891 u_int64_t tot_len; /* Make Mickey money */ 892 union { 893 struct tcphdr *tcp; 894 struct udphdr *udp; 895 struct icmp *icmp; 896 #ifdef INET6 897 struct icmp6_hdr *icmp6; 898 #endif /* INET6 */ 899 void *any; 900 } hdr; 901 struct pf_addr baddr; /* address before translation */ 902 struct pf_addr naddr; /* address after translation */ 903 struct pf_rule *nat_rule; /* nat/rdr rule applied to packet */ 904 struct pf_addr *src; 905 struct pf_addr *dst; 906 u_int16_t *ip_sum; 907 u_int32_t p_len; /* total length of payload */ 908 u_int16_t flags; /* Let SCRUB trigger behavior in 909 * state code. Easier than tags */ 910 #define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */ 911 sa_family_t af; 912 u_int8_t proto; 913 u_int8_t tos; 914 }; 915 916 /* flags for RDR options */ 917 #define PF_DPORT_RANGE 0x01 /* Dest port uses range */ 918 #define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */ 919 920 /* Reasons code for passing/dropping a packet */ 921 #define PFRES_MATCH 0 /* Explicit match of a rule */ 922 #define PFRES_BADOFF 1 /* Bad offset for pull_hdr */ 923 #define PFRES_FRAG 2 /* Dropping following fragment */ 924 #define PFRES_SHORT 3 /* Dropping short packet */ 925 #define PFRES_NORM 4 /* Dropping by normalizer */ 926 #define PFRES_MEMORY 5 /* Dropped due to lacking mem */ 927 #define PFRES_MAX 6 /* total+1 */ 928 929 #define PFRES_NAMES { \ 930 "match", \ 931 "bad-offset", \ 932 "fragment", \ 933 "short", \ 934 "normalize", \ 935 "memory", \ 936 NULL \ 937 } 938 939 /* UDP state enumeration */ 940 #define PFUDPS_NO_TRAFFIC 0 941 #define PFUDPS_SINGLE 1 942 #define PFUDPS_MULTIPLE 2 943 944 #define PFUDPS_NSTATES 3 /* number of state levels */ 945 946 #define PFUDPS_NAMES { \ 947 "NO_TRAFFIC", \ 948 "SINGLE", \ 949 "MULTIPLE", \ 950 NULL \ 951 } 952 953 /* Other protocol state enumeration */ 954 #define PFOTHERS_NO_TRAFFIC 0 955 #define PFOTHERS_SINGLE 1 956 #define PFOTHERS_MULTIPLE 2 957 958 #define PFOTHERS_NSTATES 3 /* number of state levels */ 959 960 #define PFOTHERS_NAMES { \ 961 "NO_TRAFFIC", \ 962 "SINGLE", \ 963 "MULTIPLE", \ 964 NULL \ 965 } 966 967 #define FCNT_STATE_SEARCH 0 968 #define FCNT_STATE_INSERT 1 969 #define FCNT_STATE_REMOVALS 2 970 #define FCNT_MAX 3 971 972 #define SCNT_SRC_NODE_SEARCH 0 973 #define SCNT_SRC_NODE_INSERT 1 974 #define SCNT_SRC_NODE_REMOVALS 2 975 #define SCNT_MAX 3 976 977 #define ACTION_SET(a, x) \ 978 do { \ 979 if ((a) != NULL) \ 980 *(a) = (x); \ 981 } while (0) 982 983 #define REASON_SET(a, x) \ 984 do { \ 985 if ((a) != NULL) \ 986 *(a) = (x); \ 987 if (x < PFRES_MAX) \ 988 pf_status.counters[x]++; \ 989 } while (0) 990 991 struct pf_status { 992 u_int64_t counters[PFRES_MAX]; 993 u_int64_t fcounters[FCNT_MAX]; 994 u_int64_t scounters[SCNT_MAX]; 995 u_int64_t pcounters[2][2][3]; 996 u_int64_t bcounters[2][2]; 997 u_int64_t stateid; 998 u_int32_t running; 999 u_int32_t states; 1000 u_int32_t src_nodes; 1001 u_int32_t since; 1002 u_int32_t debug; 1003 u_int32_t hostid; 1004 char ifname[IFNAMSIZ]; 1005 }; 1006 1007 struct cbq_opts { 1008 u_int minburst; 1009 u_int maxburst; 1010 u_int pktsize; 1011 u_int maxpktsize; 1012 u_int ns_per_byte; 1013 u_int maxidle; 1014 int minidle; 1015 u_int offtime; 1016 int flags; 1017 }; 1018 1019 struct priq_opts { 1020 int flags; 1021 }; 1022 1023 struct hfsc_opts { 1024 /* real-time service curve */ 1025 u_int rtsc_m1; /* slope of the 1st segment in bps */ 1026 u_int rtsc_d; /* the x-projection of m1 in msec */ 1027 u_int rtsc_m2; /* slope of the 2nd segment in bps */ 1028 /* link-sharing service curve */ 1029 u_int lssc_m1; 1030 u_int lssc_d; 1031 u_int lssc_m2; 1032 /* upper-limit service curve */ 1033 u_int ulsc_m1; 1034 u_int ulsc_d; 1035 u_int ulsc_m2; 1036 int flags; 1037 }; 1038 1039 struct pf_altq { 1040 char ifname[IFNAMSIZ]; 1041 1042 void *altq_disc; /* discipline-specific state */ 1043 TAILQ_ENTRY(pf_altq) entries; 1044 1045 /* scheduler spec */ 1046 u_int8_t scheduler; /* scheduler type */ 1047 u_int16_t tbrsize; /* tokenbucket regulator size */ 1048 u_int32_t ifbandwidth; /* interface bandwidth */ 1049 1050 /* queue spec */ 1051 char qname[PF_QNAME_SIZE]; /* queue name */ 1052 char parent[PF_QNAME_SIZE]; /* parent name */ 1053 u_int32_t parent_qid; /* parent queue id */ 1054 u_int32_t bandwidth; /* queue bandwidth */ 1055 u_int8_t priority; /* priority */ 1056 u_int16_t qlimit; /* queue size limit */ 1057 u_int16_t flags; /* misc flags */ 1058 union { 1059 struct cbq_opts cbq_opts; 1060 struct priq_opts priq_opts; 1061 struct hfsc_opts hfsc_opts; 1062 } pq_u; 1063 1064 u_int32_t qid; /* return value */ 1065 }; 1066 1067 struct pf_tagname { 1068 TAILQ_ENTRY(pf_tagname) entries; 1069 char name[PF_TAG_NAME_SIZE]; 1070 u_int16_t tag; 1071 int ref; 1072 }; 1073 1074 #define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */ 1075 #define PFFRAG_FRAG_HIWAT 1000 /* Number of fragmented packets */ 1076 #define PFFRAG_FRCENT_HIWAT 50000 /* Number of fragment cache entries */ 1077 #define PFFRAG_FRCACHE_HIWAT 10000 /* Number of fragment descriptors */ 1078 1079 /* 1080 * ioctl parameter structures 1081 */ 1082 1083 struct pfioc_pooladdr { 1084 u_int32_t action; 1085 u_int32_t ticket; 1086 u_int32_t nr; 1087 u_int32_t r_num; 1088 u_int8_t r_action; 1089 u_int8_t r_last; 1090 u_int8_t af; 1091 char anchor[PF_ANCHOR_NAME_SIZE]; 1092 char ruleset[PF_RULESET_NAME_SIZE]; 1093 struct pf_pooladdr addr; 1094 }; 1095 1096 struct pfioc_rule { 1097 u_int32_t action; 1098 u_int32_t ticket; 1099 u_int32_t pool_ticket; 1100 u_int32_t nr; 1101 char anchor[PF_ANCHOR_NAME_SIZE]; 1102 char ruleset[PF_RULESET_NAME_SIZE]; 1103 struct pf_rule rule; 1104 }; 1105 1106 struct pfioc_natlook { 1107 struct pf_addr saddr; 1108 struct pf_addr daddr; 1109 struct pf_addr rsaddr; 1110 struct pf_addr rdaddr; 1111 u_int16_t sport; 1112 u_int16_t dport; 1113 u_int16_t rsport; 1114 u_int16_t rdport; 1115 sa_family_t af; 1116 u_int8_t proto; 1117 u_int8_t direction; 1118 }; 1119 1120 struct pfioc_state { 1121 u_int32_t nr; 1122 struct pf_state state; 1123 }; 1124 1125 struct pfioc_state_kill { 1126 /* XXX returns the number of states killed in psk_af */ 1127 sa_family_t psk_af; 1128 int psk_proto; 1129 struct pf_rule_addr psk_src; 1130 struct pf_rule_addr psk_dst; 1131 char psk_ifname[IFNAMSIZ]; 1132 }; 1133 1134 struct pfioc_states { 1135 int ps_len; 1136 union { 1137 caddr_t psu_buf; 1138 struct pf_state *psu_states; 1139 } ps_u; 1140 #define ps_buf ps_u.psu_buf 1141 #define ps_states ps_u.psu_states 1142 }; 1143 1144 struct pfioc_src_nodes { 1145 int psn_len; 1146 union { 1147 caddr_t psu_buf; 1148 struct pf_src_node *psu_src_nodes; 1149 } psn_u; 1150 #define psn_buf psn_u.psu_buf 1151 #define psn_src_nodes psn_u.psu_src_nodes 1152 }; 1153 1154 struct pfioc_if { 1155 char ifname[IFNAMSIZ]; 1156 }; 1157 1158 struct pfioc_tm { 1159 int timeout; 1160 int seconds; 1161 }; 1162 1163 struct pfioc_limit { 1164 int index; 1165 unsigned limit; 1166 }; 1167 1168 struct pfioc_altq { 1169 u_int32_t action; 1170 u_int32_t ticket; 1171 u_int32_t nr; 1172 struct pf_altq altq; 1173 }; 1174 1175 struct pfioc_qstats { 1176 u_int32_t ticket; 1177 u_int32_t nr; 1178 void *buf; 1179 int nbytes; 1180 u_int8_t scheduler; 1181 }; 1182 1183 struct pfioc_anchor { 1184 u_int32_t nr; 1185 char name[PF_ANCHOR_NAME_SIZE]; 1186 }; 1187 1188 struct pfioc_ruleset { 1189 u_int32_t nr; 1190 char anchor[PF_ANCHOR_NAME_SIZE]; 1191 char name[PF_RULESET_NAME_SIZE]; 1192 }; 1193 1194 #define PF_RULESET_ALTQ (PF_RULESET_MAX) 1195 #define PF_RULESET_TABLE (PF_RULESET_MAX+1) 1196 struct pfioc_trans { 1197 int size; /* number of elements */ 1198 int esize; /* size of each element in bytes */ 1199 struct pfioc_trans_e { 1200 int rs_num; 1201 char anchor[PF_ANCHOR_NAME_SIZE]; 1202 char ruleset[PF_RULESET_NAME_SIZE]; 1203 u_int32_t ticket; 1204 } *array; 1205 }; 1206 1207 #define PFR_FLAG_ATOMIC 0x00000001 1208 #define PFR_FLAG_DUMMY 0x00000002 1209 #define PFR_FLAG_FEEDBACK 0x00000004 1210 #define PFR_FLAG_CLSTATS 0x00000008 1211 #define PFR_FLAG_ADDRSTOO 0x00000010 1212 #define PFR_FLAG_REPLACE 0x00000020 1213 #define PFR_FLAG_ALLRSETS 0x00000040 1214 #define PFR_FLAG_ALLMASK 0x0000007F 1215 #ifdef _KERNEL 1216 #define PFR_FLAG_USERIOCTL 0x10000000 1217 #endif 1218 1219 struct pfioc_table { 1220 struct pfr_table pfrio_table; 1221 void *pfrio_buffer; 1222 int pfrio_esize; 1223 int pfrio_size; 1224 int pfrio_size2; 1225 int pfrio_nadd; 1226 int pfrio_ndel; 1227 int pfrio_nchange; 1228 int pfrio_flags; 1229 u_int32_t pfrio_ticket; 1230 }; 1231 #define pfrio_exists pfrio_nadd 1232 #define pfrio_nzero pfrio_nadd 1233 #define pfrio_nmatch pfrio_nadd 1234 #define pfrio_naddr pfrio_size2 1235 #define pfrio_setflag pfrio_size2 1236 #define pfrio_clrflag pfrio_nadd 1237 1238 1239 #define PFI_FLAG_GROUP 0x0001 /* gets groups of interfaces */ 1240 #define PFI_FLAG_INSTANCE 0x0002 /* gets single interfaces */ 1241 #define PFI_FLAG_ALLMASK 0x0003 1242 1243 struct pfioc_iface { 1244 char pfiio_name[IFNAMSIZ]; 1245 void *pfiio_buffer; 1246 int pfiio_esize; 1247 int pfiio_size; 1248 int pfiio_nzero; 1249 int pfiio_flags; 1250 }; 1251 1252 1253 /* 1254 * ioctl operations 1255 */ 1256 1257 #define DIOCSTART _IO ('D', 1) 1258 #define DIOCSTOP _IO ('D', 2) 1259 #define DIOCBEGINRULES _IOWR('D', 3, struct pfioc_rule) 1260 #define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule) 1261 #define DIOCCOMMITRULES _IOWR('D', 5, struct pfioc_rule) 1262 #define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule) 1263 #define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule) 1264 /* XXX cut 8 - 17 */ 1265 #define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill) 1266 #define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state) 1267 #define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if) 1268 #define DIOCGETSTATUS _IOWR('D', 21, struct pf_status) 1269 #define DIOCCLRSTATUS _IO ('D', 22) 1270 #define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook) 1271 #define DIOCSETDEBUG _IOWR('D', 24, u_int32_t) 1272 #define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states) 1273 #define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule) 1274 /* XXX cut 26 - 28 */ 1275 #define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm) 1276 #define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm) 1277 #define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state) 1278 #define DIOCCLRRULECTRS _IO ('D', 38) 1279 #define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit) 1280 #define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit) 1281 #define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill) 1282 #define DIOCSTARTALTQ _IO ('D', 42) 1283 #define DIOCSTOPALTQ _IO ('D', 43) 1284 #define DIOCBEGINALTQS _IOWR('D', 44, u_int32_t) 1285 #define DIOCADDALTQ _IOWR('D', 45, struct pfioc_altq) 1286 #define DIOCCOMMITALTQS _IOWR('D', 46, u_int32_t) 1287 #define DIOCGETALTQS _IOWR('D', 47, struct pfioc_altq) 1288 #define DIOCGETALTQ _IOWR('D', 48, struct pfioc_altq) 1289 #define DIOCCHANGEALTQ _IOWR('D', 49, struct pfioc_altq) 1290 #define DIOCGETQSTATS _IOWR('D', 50, struct pfioc_qstats) 1291 #define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr) 1292 #define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr) 1293 #define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr) 1294 #define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr) 1295 #define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr) 1296 #define DIOCGETANCHORS _IOWR('D', 56, struct pfioc_anchor) 1297 #define DIOCGETANCHOR _IOWR('D', 57, struct pfioc_anchor) 1298 #define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset) 1299 #define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset) 1300 #define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table) 1301 #define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table) 1302 #define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table) 1303 #define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table) 1304 #define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table) 1305 #define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table) 1306 #define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table) 1307 #define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table) 1308 #define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table) 1309 #define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table) 1310 #define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table) 1311 #define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table) 1312 #define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table) 1313 #define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table) 1314 #define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table) 1315 #define DIOCRINABEGIN _IOWR('D', 75, struct pfioc_table) 1316 #define DIOCRINACOMMIT _IOWR('D', 76, struct pfioc_table) 1317 #define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table) 1318 #define DIOCOSFPFLUSH _IO('D', 78) 1319 #define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl) 1320 #define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl) 1321 #define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans) 1322 #define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans) 1323 #define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans) 1324 #define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes) 1325 #define DIOCCLRSRCNODES _IO('D', 85) 1326 #define DIOCSETHOSTID _IOWR('D', 86, u_int32_t) 1327 #define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface) 1328 #define DIOCICLRISTATS _IOWR('D', 88, struct pfioc_iface) 1329 struct pf_ifspeed { 1330 char ifname[IFNAMSIZ]; 1331 u_int32_t baudrate; 1332 }; 1333 #define DIOCGIFSPEED _IOWR('D', 89, struct pf_ifspeed) 1334 1335 #ifdef _KERNEL 1336 RB_HEAD(pf_src_tree, pf_src_node); 1337 RB_PROTOTYPE(pf_src_tree, pf_src_node, entry, pf_src_compare); 1338 extern struct pf_src_tree tree_src_tracking; 1339 1340 RB_HEAD(pf_state_tree_id, pf_state); 1341 RB_PROTOTYPE(pf_state_tree_id, pf_state, 1342 entry_id, pf_state_compare_id); 1343 extern struct pf_state_tree_id tree_id; 1344 extern struct pf_state_queue state_updates; 1345 1346 extern struct pf_anchorqueue pf_anchors; 1347 extern struct pf_ruleset pf_main_ruleset; 1348 TAILQ_HEAD(pf_poolqueue, pf_pool); 1349 extern struct pf_poolqueue pf_pools[2]; 1350 TAILQ_HEAD(pf_altqqueue, pf_altq); 1351 extern struct pf_altqqueue pf_altqs[2]; 1352 extern struct pf_palist pf_pabuf; 1353 extern struct pfi_kif **pfi_index2kif; 1354 1355 extern u_int32_t ticket_altqs_active; 1356 extern u_int32_t ticket_altqs_inactive; 1357 extern int altqs_inactive_open; 1358 extern u_int32_t ticket_pabuf; 1359 extern struct pf_altqqueue *pf_altqs_active; 1360 extern struct pf_altqqueue *pf_altqs_inactive; 1361 extern struct pf_poolqueue *pf_pools_active; 1362 extern struct pf_poolqueue *pf_pools_inactive; 1363 extern int pf_tbladdr_setup(struct pf_ruleset *, 1364 struct pf_addr_wrap *); 1365 extern void pf_tbladdr_remove(struct pf_addr_wrap *); 1366 extern void pf_tbladdr_copyout(struct pf_addr_wrap *); 1367 extern void pf_calc_skip_steps(struct pf_rulequeue *); 1368 extern void pf_update_anchor_rules(void); 1369 extern vm_zone_t pf_src_tree_pl, pf_rule_pl; 1370 extern vm_zone_t pf_state_pl, pf_altq_pl, pf_pooladdr_pl; 1371 extern vm_zone_t pfr_ktable_pl, pfr_kentry_pl; 1372 extern vm_zone_t pf_cache_pl, pf_cent_pl; 1373 extern vm_zone_t pf_state_scrub_pl; 1374 extern vm_zone_t pfi_addr_pl; 1375 extern void pf_purge_timeout(void *); 1376 extern void pf_purge_expired_src_nodes(void); 1377 extern void pf_purge_expired_states(void); 1378 extern int pf_insert_state(struct pfi_kif *, 1379 struct pf_state *); 1380 extern int pf_insert_src_node(struct pf_src_node **, 1381 struct pf_rule *, struct pf_addr *, 1382 sa_family_t); 1383 void pf_src_tree_remove_state(struct pf_state *); 1384 extern struct pf_state *pf_find_state_byid(struct pf_state *); 1385 extern struct pf_state *pf_find_state_all(struct pf_state *key, 1386 u_int8_t tree, int *more); 1387 extern struct pf_anchor *pf_find_anchor(const char *); 1388 extern struct pf_ruleset *pf_find_ruleset(char *, char *); 1389 extern struct pf_ruleset *pf_find_or_create_ruleset( 1390 char[PF_ANCHOR_NAME_SIZE], 1391 char[PF_RULESET_NAME_SIZE]); 1392 extern void pf_remove_if_empty_ruleset( 1393 struct pf_ruleset *); 1394 1395 extern struct ifnet *sync_ifp; 1396 extern struct pf_rule pf_default_rule; 1397 extern void pf_addrcpy(struct pf_addr *, struct pf_addr *, 1398 u_int8_t); 1399 void pf_rm_rule(struct pf_rulequeue *, 1400 struct pf_rule *); 1401 1402 #ifdef INET 1403 int pf_test(int, struct ifnet *, struct mbuf **); 1404 #endif /* INET */ 1405 1406 #ifdef INET6 1407 int pf_test6(int, struct ifnet *, struct mbuf **); 1408 void pf_poolmask(struct pf_addr *, struct pf_addr*, 1409 struct pf_addr *, struct pf_addr *, u_int8_t); 1410 void pf_addr_inc(struct pf_addr *, sa_family_t); 1411 #endif /* INET6 */ 1412 1413 void *pf_pull_hdr(struct mbuf *, int, void *, int, u_short *, u_short *, 1414 sa_family_t); 1415 void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t); 1416 int pflog_packet(struct pfi_kif *, struct mbuf *, sa_family_t, u_int8_t, 1417 u_int8_t, struct pf_rule *, struct pf_rule *, struct pf_ruleset *); 1418 int pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *, 1419 struct pf_addr *, sa_family_t); 1420 int pf_match(u_int8_t, u_int32_t, u_int32_t, u_int32_t); 1421 int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t); 1422 int pf_match_uid(u_int8_t, uid_t, uid_t, uid_t); 1423 int pf_match_gid(u_int8_t, gid_t, gid_t, gid_t); 1424 1425 void pf_normalize_init(void); 1426 int pf_normalize_ip(struct mbuf **, int, struct pfi_kif *, u_short *); 1427 int pf_normalize_ip6(struct mbuf **, int, struct pfi_kif *, u_short *); 1428 int pf_normalize_tcp(int, struct pfi_kif *, struct mbuf *, int, int, void *, 1429 struct pf_pdesc *); 1430 void pf_normalize_tcp_cleanup(struct pf_state *); 1431 int pf_normalize_tcp_init(struct mbuf *, int, struct pf_pdesc *, 1432 struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *); 1433 int pf_normalize_tcp_stateful(struct mbuf *, int, struct pf_pdesc *, 1434 u_short *, struct tcphdr *, struct pf_state_peer *, 1435 struct pf_state_peer *, int *); 1436 u_int32_t 1437 pf_state_expires(const struct pf_state *); 1438 void pf_purge_expired_fragments(void); 1439 int pf_routable(struct pf_addr *addr, sa_family_t af); 1440 void pfr_initialize(void); 1441 int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t); 1442 void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t, 1443 u_int64_t, int, int, int); 1444 int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, 1445 struct pf_addr **, struct pf_addr **, sa_family_t); 1446 void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *); 1447 struct pfr_ktable * 1448 pfr_attach_table(struct pf_ruleset *, char *); 1449 void pfr_detach_table(struct pfr_ktable *); 1450 int pfr_clr_tables(struct pfr_table *, int *, int); 1451 int pfr_add_tables(struct pfr_table *, int, int *, int); 1452 int pfr_del_tables(struct pfr_table *, int, int *, int); 1453 int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int); 1454 int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int); 1455 int pfr_clr_tstats(struct pfr_table *, int, int *, int); 1456 int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int); 1457 int pfr_clr_addrs(struct pfr_table *, int *, int); 1458 int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1459 int); 1460 int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1461 int); 1462 int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1463 int *, int *, int *, int); 1464 int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int); 1465 int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int); 1466 int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *, 1467 int); 1468 int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1469 int); 1470 int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int); 1471 int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int); 1472 int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int); 1473 int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *, 1474 int *, u_int32_t, int); 1475 1476 void pfi_initialize(void); 1477 void pfi_cleanup(void); 1478 void pfi_attach_clone(struct if_clone *); 1479 void pfi_attach_ifnet(struct ifnet *); 1480 void pfi_detach_ifnet(struct ifnet *); 1481 struct pfi_kif *pfi_lookup_create(const char *); 1482 struct pfi_kif *pfi_lookup_if(const char *); 1483 int pfi_maybe_destroy(struct pfi_kif *); 1484 struct pfi_kif *pfi_attach_rule(const char *); 1485 void pfi_detach_rule(struct pfi_kif *); 1486 void pfi_attach_state(struct pfi_kif *); 1487 void pfi_detach_state(struct pfi_kif *); 1488 int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t); 1489 void pfi_dynaddr_copyout(struct pf_addr_wrap *); 1490 void pfi_dynaddr_remove(struct pf_addr_wrap *); 1491 void pfi_fill_oldstatus(struct pf_status *); 1492 int pfi_clr_istats(const char *, int *, int); 1493 int pfi_get_ifaces(const char *, struct pfi_if *, int *, int); 1494 int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *, 1495 sa_family_t); 1496 1497 extern struct pfi_statehead pfi_statehead; 1498 1499 u_int16_t pf_tagname2tag(char *); 1500 void pf_tag2tagname(u_int16_t, char *); 1501 void pf_tag_unref(u_int16_t); 1502 void pf_tag_packet(struct mbuf *, int); 1503 u_int32_t pf_qname2qid(char *); 1504 void pf_qid2qname(u_int32_t, char *); 1505 void pf_qid_unref(u_int32_t); 1506 1507 extern struct pf_status pf_status; 1508 extern vm_zone_t pf_frent_pl, pf_frag_pl; 1509 1510 struct pf_pool_limit { 1511 void *pp; 1512 unsigned limit; 1513 }; 1514 extern struct pf_pool_limit pf_pool_limits[PF_LIMIT_MAX]; 1515 1516 struct pf_frent { 1517 LIST_ENTRY(pf_frent) fr_next; 1518 struct ip *fr_ip; 1519 struct mbuf *fr_m; 1520 }; 1521 1522 struct pf_frcache { 1523 LIST_ENTRY(pf_frcache) fr_next; 1524 uint16_t fr_off; 1525 uint16_t fr_end; 1526 }; 1527 1528 struct pf_fragment { 1529 RB_ENTRY(pf_fragment) fr_entry; 1530 TAILQ_ENTRY(pf_fragment) frag_next; 1531 struct in_addr fr_src; 1532 struct in_addr fr_dst; 1533 u_int8_t fr_p; /* protocol of this fragment */ 1534 u_int8_t fr_flags; /* status flags */ 1535 u_int16_t fr_id; /* fragment id for reassemble */ 1536 u_int16_t fr_max; /* fragment data max */ 1537 u_int32_t fr_timeout; 1538 #define fr_queue fr_u.fru_queue 1539 #define fr_cache fr_u.fru_cache 1540 union { 1541 LIST_HEAD(pf_fragq, pf_frent) fru_queue; /* buffering */ 1542 LIST_HEAD(pf_cacheq, pf_frcache) fru_cache; /* non-buf */ 1543 } fr_u; 1544 }; 1545 #endif /* _KERNEL */ 1546 1547 /* The fingerprint functions can be linked into userland programs (tcpdump) */ 1548 int pf_osfp_add(struct pf_osfp_ioctl *); 1549 #ifdef _KERNEL 1550 struct pf_osfp_enlist * 1551 pf_osfp_fingerprint(struct pf_pdesc *, struct mbuf *, int, 1552 const struct tcphdr *); 1553 #endif /* _KERNEL */ 1554 struct pf_osfp_enlist * 1555 pf_osfp_fingerprint_hdr(const struct ip *, const struct tcphdr *); 1556 void pf_osfp_flush(void); 1557 int pf_osfp_get(struct pf_osfp_ioctl *); 1558 int pf_osfp_initialize(void); 1559 void pf_osfp_cleanup(void); 1560 int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t); 1561 struct pf_os_fingerprint * 1562 pf_osfp_validate(void); 1563 1564 1565 #endif /* _NET_PFVAR_H_ */ 1566