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 1.1 2004/09/19 22:32:47 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 * XXX 49 * If we include <netipsec/keydb.h>, we need _KERNEL definition. 50 * This makes pfctl compilation difficult. 51 */ 52 union sockaddr_union { 53 struct sockaddr sa; 54 struct sockaddr_in sin; 55 struct sockaddr_in6 sin6; 56 }; 57 58 #include <netinet/tcp_fsm.h> 59 60 struct ip; 61 62 #define PF_TCPS_PROXY_SRC ((TCP_NSTATES)+0) 63 #define PF_TCPS_PROXY_DST ((TCP_NSTATES)+1) 64 65 enum { PF_INOUT, PF_IN, PF_OUT }; 66 enum { PF_LAN_EXT, PF_EXT_GWY, PF_ID }; 67 enum { PF_PASS, PF_DROP, PF_SCRUB, PF_NAT, PF_NONAT, 68 PF_BINAT, PF_NOBINAT, PF_RDR, PF_NORDR, PF_SYNPROXY_DROP }; 69 enum { PF_RULESET_SCRUB, PF_RULESET_FILTER, PF_RULESET_NAT, 70 PF_RULESET_BINAT, PF_RULESET_RDR, PF_RULESET_MAX }; 71 enum { PF_OP_NONE, PF_OP_IRG, PF_OP_EQ, PF_OP_NE, PF_OP_LT, 72 PF_OP_LE, PF_OP_GT, PF_OP_GE, PF_OP_XRG, PF_OP_RRG }; 73 enum { PF_DEBUG_NONE, PF_DEBUG_URGENT, PF_DEBUG_MISC, PF_DEBUG_NOISY }; 74 enum { PF_CHANGE_NONE, PF_CHANGE_ADD_HEAD, PF_CHANGE_ADD_TAIL, 75 PF_CHANGE_ADD_BEFORE, PF_CHANGE_ADD_AFTER, 76 PF_CHANGE_REMOVE, PF_CHANGE_GET_TICKET }; 77 /* 78 * Note about PFTM_*: real indices into pf_rule.timeout[] come before 79 * PFTM_MAX, special cases afterwards. See pf_state_expires(). 80 */ 81 enum { PFTM_TCP_FIRST_PACKET, PFTM_TCP_OPENING, PFTM_TCP_ESTABLISHED, 82 PFTM_TCP_CLOSING, PFTM_TCP_FIN_WAIT, PFTM_TCP_CLOSED, 83 PFTM_UDP_FIRST_PACKET, PFTM_UDP_SINGLE, PFTM_UDP_MULTIPLE, 84 PFTM_ICMP_FIRST_PACKET, PFTM_ICMP_ERROR_REPLY, 85 PFTM_OTHER_FIRST_PACKET, PFTM_OTHER_SINGLE, 86 PFTM_OTHER_MULTIPLE, PFTM_FRAG, PFTM_INTERVAL, 87 PFTM_ADAPTIVE_START, PFTM_ADAPTIVE_END, PFTM_SRC_NODE, 88 PFTM_MAX, PFTM_PURGE, PFTM_UNTIL_PACKET }; 89 enum { PF_NOPFROUTE, PF_FASTROUTE, PF_ROUTETO, PF_DUPTO, PF_REPLYTO }; 90 enum { PF_LIMIT_STATES, PF_LIMIT_SRC_NODES, PF_LIMIT_FRAGS, PF_LIMIT_MAX }; 91 #define PF_POOL_IDMASK 0x0f 92 enum { PF_POOL_NONE, PF_POOL_BITMASK, PF_POOL_RANDOM, 93 PF_POOL_SRCHASH, PF_POOL_ROUNDROBIN }; 94 enum { PF_ADDR_ADDRMASK, PF_ADDR_NOROUTE, PF_ADDR_DYNIFTL, 95 PF_ADDR_TABLE }; 96 #define PF_POOL_TYPEMASK 0x0f 97 #define PF_POOL_STICKYADDR 0x20 98 #define PF_WSCALE_FLAG 0x80 99 #define PF_WSCALE_MASK 0x0f 100 101 struct pf_addr { 102 union { 103 struct in_addr v4; 104 struct in6_addr v6; 105 u_int8_t addr8[16]; 106 u_int16_t addr16[8]; 107 u_int32_t addr32[4]; 108 } pfa; /* 128-bit address */ 109 #define v4 pfa.v4 110 #define v6 pfa.v6 111 #define addr8 pfa.addr8 112 #define addr16 pfa.addr16 113 #define addr32 pfa.addr32 114 }; 115 116 #define PF_TABLE_NAME_SIZE 32 117 118 #define PFI_AFLAG_NETWORK 0x01 119 #define PFI_AFLAG_BROADCAST 0x02 120 #define PFI_AFLAG_PEER 0x04 121 #define PFI_AFLAG_MODEMASK 0x07 122 #define PFI_AFLAG_NOALIAS 0x08 123 124 struct pf_addr_wrap { 125 union { 126 struct { 127 struct pf_addr addr; 128 struct pf_addr mask; 129 } a; 130 char ifname[IFNAMSIZ]; 131 char tblname[PF_TABLE_NAME_SIZE]; 132 } v; 133 union { 134 struct pfi_dynaddr *dyn; 135 struct pfr_ktable *tbl; 136 int dyncnt; 137 int tblcnt; 138 } p; 139 u_int8_t type; /* PF_ADDR_* */ 140 u_int8_t iflags; /* PFI_AFLAG_* */ 141 }; 142 143 #ifdef _KERNEL 144 145 struct pfi_dynaddr { 146 struct pf_addr pfid_addr4; 147 struct pf_addr pfid_mask4; 148 struct pf_addr pfid_addr6; 149 struct pf_addr pfid_mask6; 150 struct pfr_ktable *pfid_kt; 151 struct pfi_kif *pfid_kif; 152 void *pfid_hook_cookie; 153 int pfid_net; /* optional mask, or 128 */ 154 int pfid_acnt4; /* address count, IPv4 */ 155 int pfid_acnt6; /* address count, IPv6 */ 156 sa_family_t pfid_af; /* rule address family */ 157 u_int8_t pfid_iflags; /* PFI_AFLAG_* */ 158 }; 159 160 /* 161 * Address manipulation macros 162 */ 163 164 #define splsoftnet() splnet() 165 166 /* XXX correct values for zinit? */ 167 #define ZONE_CREATE(var, type, desc) \ 168 var = zinit(desc, sizeof(type), 1, 0, 1); \ 169 if (var == NULL) break 170 #define ZONE_DESTROY(a) /* XXX */ 171 172 #define pool_get(p, f) zalloc(*(p)) 173 #define pool_put(p, o) zfree(*(p), (o)) 174 175 #define PF_NAME "pf" 176 177 #define PF_MODVER 1 178 #define PFLOG_MODVER 1 179 #define PFSYNC_MODVER 1 180 181 #define PFLOG_MINVER 1 182 #define PFLOG_PREFVER PFLOG_MODVER 183 #define PFLOG_MAXVER 1 184 #define PFSYNC_MINVER 1 185 #define PFSYNC_PREFVER PFSYNC_MODVER 186 #define PFSYNC_MAXVER 1 187 188 /* prototyped for pf_subr.c */ 189 struct hook_desc { 190 TAILQ_ENTRY(hook_desc) hd_list; 191 void (*hd_fn)(void *); 192 void *hd_arg; 193 }; 194 TAILQ_HEAD(hook_desc_head, hook_desc); 195 196 void *hook_establish(struct hook_desc_head *, int, void (*)(void *), void *); 197 void hook_disestablish(struct hook_desc_head *, void *); 198 void dohooks(struct hook_desc_head *, int); 199 200 #define HOOK_REMOVE 0x01 201 #define HOOK_FREE 0x02 202 203 #ifdef INET 204 #ifndef INET6 205 #define PF_INET_ONLY 206 #endif /* ! INET6 */ 207 #endif /* INET */ 208 209 #ifdef INET6 210 #ifndef INET 211 #define PF_INET6_ONLY 212 #endif /* ! INET */ 213 #endif /* INET6 */ 214 215 #ifdef INET 216 #ifdef INET6 217 #define PF_INET_INET6 218 #endif /* INET6 */ 219 #endif /* INET */ 220 221 #else 222 223 #define PF_INET_INET6 224 225 #endif /* _KERNEL */ 226 227 /* Both IPv4 and IPv6 */ 228 #ifdef PF_INET_INET6 229 230 #define PF_AEQ(a, b, c) \ 231 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \ 232 ((a)->addr32[3] == (b)->addr32[3] && \ 233 (a)->addr32[2] == (b)->addr32[2] && \ 234 (a)->addr32[1] == (b)->addr32[1] && \ 235 (a)->addr32[0] == (b)->addr32[0])) \ 236 237 #define PF_ANEQ(a, b, c) \ 238 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \ 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 ((c == AF_INET && !(a)->addr32[0]) || \ 246 (!(a)->addr32[0] && !(a)->addr32[1] && \ 247 !(a)->addr32[2] && !(a)->addr32[3] )) \ 248 249 #define PF_MATCHA(n, a, m, b, f) \ 250 pf_match_addr(n, a, m, b, f) 251 252 #define PF_ACPY(a, b, f) \ 253 pf_addrcpy(a, b, f) 254 255 #define PF_AINC(a, f) \ 256 pf_addr_inc(a, f) 257 258 #define PF_POOLMASK(a, b, c, d, f) \ 259 pf_poolmask(a, b, c, d, f) 260 261 #else 262 263 /* Just IPv6 */ 264 265 #ifdef PF_INET6_ONLY 266 267 #define PF_AEQ(a, b, c) \ 268 ((a)->addr32[3] == (b)->addr32[3] && \ 269 (a)->addr32[2] == (b)->addr32[2] && \ 270 (a)->addr32[1] == (b)->addr32[1] && \ 271 (a)->addr32[0] == (b)->addr32[0]) \ 272 273 #define PF_ANEQ(a, b, c) \ 274 ((a)->addr32[3] != (b)->addr32[3] || \ 275 (a)->addr32[2] != (b)->addr32[2] || \ 276 (a)->addr32[1] != (b)->addr32[1] || \ 277 (a)->addr32[0] != (b)->addr32[0]) \ 278 279 #define PF_AZERO(a, c) \ 280 (!(a)->addr32[0] && \ 281 !(a)->addr32[1] && \ 282 !(a)->addr32[2] && \ 283 !(a)->addr32[3] ) \ 284 285 #define PF_MATCHA(n, a, m, b, f) \ 286 pf_match_addr(n, a, m, b, f) 287 288 #define PF_ACPY(a, b, f) \ 289 pf_addrcpy(a, b, f) 290 291 #define PF_AINC(a, f) \ 292 pf_addr_inc(a, f) 293 294 #define PF_POOLMASK(a, b, c, d, f) \ 295 pf_poolmask(a, b, c, d, f) 296 297 #else 298 299 /* Just IPv4 */ 300 #ifdef PF_INET_ONLY 301 302 #define PF_AEQ(a, b, c) \ 303 ((a)->addr32[0] == (b)->addr32[0]) 304 305 #define PF_ANEQ(a, b, c) \ 306 ((a)->addr32[0] != (b)->addr32[0]) 307 308 #define PF_AZERO(a, c) \ 309 (!(a)->addr32[0]) 310 311 #define PF_MATCHA(n, a, m, b, f) \ 312 pf_match_addr(n, a, m, b, f) 313 314 #define PF_ACPY(a, b, f) \ 315 (a)->v4.s_addr = (b)->v4.s_addr 316 317 #define PF_AINC(a, f) \ 318 do { \ 319 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \ 320 } while (0) 321 322 #define PF_POOLMASK(a, b, c, d, f) \ 323 do { \ 324 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \ 325 (((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \ 326 } while (0) 327 328 #endif /* PF_INET_ONLY */ 329 #endif /* PF_INET6_ONLY */ 330 #endif /* PF_INET_INET6 */ 331 332 #define PF_MISMATCHAW(aw, x, af, not) \ 333 ( \ 334 (((aw)->type == PF_ADDR_NOROUTE && \ 335 pf_routable((x), (af))) || \ 336 ((aw)->type == PF_ADDR_TABLE && \ 337 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \ 338 ((aw)->type == PF_ADDR_DYNIFTL && \ 339 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \ 340 ((aw)->type == PF_ADDR_ADDRMASK && \ 341 !PF_AZERO(&(aw)->v.a.mask, (af)) && \ 342 !PF_MATCHA(0, &(aw)->v.a.addr, \ 343 &(aw)->v.a.mask, (x), (af)))) != \ 344 (not) \ 345 ) 346 347 struct pf_rule_uid { 348 uid_t uid[2]; 349 u_int8_t op; 350 }; 351 352 struct pf_rule_gid { 353 uid_t gid[2]; 354 u_int8_t op; 355 }; 356 357 struct pf_rule_addr { 358 struct pf_addr_wrap addr; 359 u_int16_t port[2]; 360 u_int8_t not; 361 u_int8_t port_op; 362 }; 363 364 struct pf_pooladdr { 365 struct pf_addr_wrap addr; 366 TAILQ_ENTRY(pf_pooladdr) entries; 367 char ifname[IFNAMSIZ]; 368 struct pfi_kif *kif; 369 }; 370 371 TAILQ_HEAD(pf_palist, pf_pooladdr); 372 373 struct pf_poolhashkey { 374 union { 375 u_int8_t key8[16]; 376 u_int16_t key16[8]; 377 u_int32_t key32[4]; 378 } pfk; /* 128-bit hash key */ 379 #define key8 pfk.key8 380 #define key16 pfk.key16 381 #define key32 pfk.key32 382 }; 383 384 struct pf_pool { 385 struct pf_palist list; 386 struct pf_pooladdr *cur; 387 struct pf_poolhashkey key; 388 struct pf_addr counter; 389 int tblidx; 390 u_int16_t proxy_port[2]; 391 u_int8_t port_op; 392 u_int8_t opts; 393 }; 394 395 396 /* A packed Operating System description for fingerprinting */ 397 typedef u_int32_t pf_osfp_t; 398 #define PF_OSFP_ANY ((pf_osfp_t)0) 399 #define PF_OSFP_UNKNOWN ((pf_osfp_t)-1) 400 #define PF_OSFP_NOMATCH ((pf_osfp_t)-2) 401 402 struct pf_osfp_entry { 403 SLIST_ENTRY(pf_osfp_entry) fp_entry; 404 pf_osfp_t fp_os; 405 int fp_enflags; 406 #define PF_OSFP_EXPANDED 0x001 /* expanded entry */ 407 #define PF_OSFP_GENERIC 0x002 /* generic signature */ 408 #define PF_OSFP_NODETAIL 0x004 /* no p0f details */ 409 #define PF_OSFP_LEN 32 410 char fp_class_nm[PF_OSFP_LEN]; 411 char fp_version_nm[PF_OSFP_LEN]; 412 char fp_subtype_nm[PF_OSFP_LEN]; 413 }; 414 #define PF_OSFP_ENTRY_EQ(a, b) \ 415 ((a)->fp_os == (b)->fp_os && \ 416 memcmp((a)->fp_class_nm, (b)->fp_class_nm, PF_OSFP_LEN) == 0 && \ 417 memcmp((a)->fp_version_nm, (b)->fp_version_nm, PF_OSFP_LEN) == 0 && \ 418 memcmp((a)->fp_subtype_nm, (b)->fp_subtype_nm, PF_OSFP_LEN) == 0) 419 420 /* handle pf_osfp_t packing */ 421 #define _FP_RESERVED_BIT 1 /* For the special negative #defines */ 422 #define _FP_UNUSED_BITS 1 423 #define _FP_CLASS_BITS 10 /* OS Class (Windows, Linux) */ 424 #define _FP_VERSION_BITS 10 /* OS version (95, 98, NT, 2.4.54, 3.2) */ 425 #define _FP_SUBTYPE_BITS 10 /* patch level (NT SP4, SP3, ECN patch) */ 426 #define PF_OSFP_UNPACK(osfp, class, version, subtype) do { \ 427 (class) = ((osfp) >> (_FP_VERSION_BITS+_FP_SUBTYPE_BITS)) & \ 428 ((1 << _FP_CLASS_BITS) - 1); \ 429 (version) = ((osfp) >> _FP_SUBTYPE_BITS) & \ 430 ((1 << _FP_VERSION_BITS) - 1);\ 431 (subtype) = (osfp) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 432 } while(0) 433 #define PF_OSFP_PACK(osfp, class, version, subtype) do { \ 434 (osfp) = ((class) & ((1 << _FP_CLASS_BITS) - 1)) << (_FP_VERSION_BITS \ 435 + _FP_SUBTYPE_BITS); \ 436 (osfp) |= ((version) & ((1 << _FP_VERSION_BITS) - 1)) << \ 437 _FP_SUBTYPE_BITS; \ 438 (osfp) |= (subtype) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 439 } while(0) 440 441 /* the fingerprint of an OSes TCP SYN packet */ 442 typedef u_int64_t pf_tcpopts_t; 443 struct pf_os_fingerprint { 444 SLIST_HEAD(pf_osfp_enlist, pf_osfp_entry) fp_oses; /* list of matches */ 445 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 446 u_int16_t fp_wsize; /* TCP window size */ 447 u_int16_t fp_psize; /* ip->ip_len */ 448 u_int16_t fp_mss; /* TCP MSS */ 449 u_int16_t fp_flags; 450 #define PF_OSFP_WSIZE_MOD 0x0001 /* Window modulus */ 451 #define PF_OSFP_WSIZE_DC 0x0002 /* Window don't care */ 452 #define PF_OSFP_WSIZE_MSS 0x0004 /* Window multiple of MSS */ 453 #define PF_OSFP_WSIZE_MTU 0x0008 /* Window multiple of MTU */ 454 #define PF_OSFP_PSIZE_MOD 0x0010 /* packet size modulus */ 455 #define PF_OSFP_PSIZE_DC 0x0020 /* packet size don't care */ 456 #define PF_OSFP_WSCALE 0x0040 /* TCP window scaling */ 457 #define PF_OSFP_WSCALE_MOD 0x0080 /* TCP window scale modulus */ 458 #define PF_OSFP_WSCALE_DC 0x0100 /* TCP window scale dont-care */ 459 #define PF_OSFP_MSS 0x0200 /* TCP MSS */ 460 #define PF_OSFP_MSS_MOD 0x0400 /* TCP MSS modulus */ 461 #define PF_OSFP_MSS_DC 0x0800 /* TCP MSS dont-care */ 462 #define PF_OSFP_DF 0x1000 /* IPv4 don't fragment bit */ 463 #define PF_OSFP_TS0 0x2000 /* Zero timestamp */ 464 u_int8_t fp_optcnt; /* TCP option count */ 465 u_int8_t fp_wscale; /* TCP window scaling */ 466 u_int8_t fp_ttl; /* IPv4 TTL */ 467 #define PF_OSFP_MAXTTL_OFFSET 40 468 /* TCP options packing */ 469 #define PF_OSFP_TCPOPT_NOP 0x0 /* TCP NOP option */ 470 #define PF_OSFP_TCPOPT_WSCALE 0x1 /* TCP window scaling option */ 471 #define PF_OSFP_TCPOPT_MSS 0x2 /* TCP max segment size opt */ 472 #define PF_OSFP_TCPOPT_SACK 0x3 /* TCP SACK OK option */ 473 #define PF_OSFP_TCPOPT_TS 0x4 /* TCP timestamp option */ 474 #define PF_OSFP_TCPOPT_BITS 3 /* bits used by each option */ 475 #define PF_OSFP_MAX_OPTS \ 476 (sizeof(((struct pf_os_fingerprint *)0)->fp_tcpopts) * 8) \ 477 / PF_OSFP_TCPOPT_BITS 478 479 SLIST_ENTRY(pf_os_fingerprint) fp_next; 480 }; 481 482 struct pf_osfp_ioctl { 483 struct pf_osfp_entry fp_os; 484 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 485 u_int16_t fp_wsize; /* TCP window size */ 486 u_int16_t fp_psize; /* ip->ip_len */ 487 u_int16_t fp_mss; /* TCP MSS */ 488 u_int16_t fp_flags; 489 u_int8_t fp_optcnt; /* TCP option count */ 490 u_int8_t fp_wscale; /* TCP window scaling */ 491 u_int8_t fp_ttl; /* IPv4 TTL */ 492 493 int fp_getnum; /* DIOCOSFPGET number */ 494 }; 495 496 497 union pf_rule_ptr { 498 struct pf_rule *ptr; 499 u_int32_t nr; 500 }; 501 502 struct pf_rule { 503 struct pf_rule_addr src; 504 struct pf_rule_addr dst; 505 #define PF_SKIP_IFP 0 506 #define PF_SKIP_DIR 1 507 #define PF_SKIP_AF 2 508 #define PF_SKIP_PROTO 3 509 #define PF_SKIP_SRC_ADDR 4 510 #define PF_SKIP_SRC_PORT 5 511 #define PF_SKIP_DST_ADDR 6 512 #define PF_SKIP_DST_PORT 7 513 #define PF_SKIP_COUNT 8 514 union pf_rule_ptr skip[PF_SKIP_COUNT]; 515 #define PF_RULE_LABEL_SIZE 64 516 char label[PF_RULE_LABEL_SIZE]; 517 #define PF_QNAME_SIZE 16 518 char ifname[IFNAMSIZ]; 519 char qname[PF_QNAME_SIZE]; 520 char pqname[PF_QNAME_SIZE]; 521 #define PF_ANCHOR_NAME_SIZE 16 522 char anchorname[PF_ANCHOR_NAME_SIZE]; 523 #define PF_TAG_NAME_SIZE 16 524 char tagname[PF_TAG_NAME_SIZE]; 525 char match_tagname[PF_TAG_NAME_SIZE]; 526 527 TAILQ_ENTRY(pf_rule) entries; 528 struct pf_pool rpool; 529 530 u_int64_t evaluations; 531 u_int64_t packets; 532 u_int64_t bytes; 533 534 struct pfi_kif *kif; 535 struct pf_anchor *anchor; 536 537 pf_osfp_t os_fingerprint; 538 539 u_int32_t timeout[PFTM_MAX]; 540 u_int32_t states; 541 u_int32_t max_states; 542 u_int32_t src_nodes; 543 u_int32_t max_src_nodes; 544 u_int32_t max_src_states; 545 u_int32_t qid; 546 u_int32_t pqid; 547 u_int32_t rt_listid; 548 u_int32_t nr; 549 550 u_int16_t return_icmp; 551 u_int16_t return_icmp6; 552 u_int16_t max_mss; 553 u_int16_t tag; 554 u_int16_t match_tag; 555 556 struct pf_rule_uid uid; 557 struct pf_rule_gid gid; 558 559 u_int32_t rule_flag; 560 u_int8_t action; 561 u_int8_t direction; 562 u_int8_t log; 563 u_int8_t quick; 564 u_int8_t ifnot; 565 u_int8_t match_tag_not; 566 u_int8_t natpass; 567 568 #define PF_STATE_NORMAL 0x1 569 #define PF_STATE_MODULATE 0x2 570 #define PF_STATE_SYNPROXY 0x3 571 u_int8_t keep_state; 572 sa_family_t af; 573 u_int8_t proto; 574 u_int8_t type; 575 u_int8_t code; 576 u_int8_t flags; 577 u_int8_t flagset; 578 u_int8_t min_ttl; 579 u_int8_t allow_opts; 580 u_int8_t rt; 581 u_int8_t return_ttl; 582 u_int8_t tos; 583 }; 584 585 /* rule flags */ 586 #define PFRULE_DROP 0x0000 587 #define PFRULE_RETURNRST 0x0001 588 #define PFRULE_FRAGMENT 0x0002 589 #define PFRULE_RETURNICMP 0x0004 590 #define PFRULE_RETURN 0x0008 591 #define PFRULE_NOSYNC 0x0010 592 #define PFRULE_SRCTRACK 0x0020 /* track source states */ 593 #define PFRULE_RULESRCTRACK 0x0040 /* per rule */ 594 595 /* scrub flags */ 596 #define PFRULE_NODF 0x0100 597 #define PFRULE_FRAGCROP 0x0200 /* non-buffering frag cache */ 598 #define PFRULE_FRAGDROP 0x0400 /* drop funny fragments */ 599 #define PFRULE_RANDOMID 0x0800 600 #define PFRULE_REASSEMBLE_TCP 0x1000 601 602 /* rule flags again */ 603 #define PFRULE_IFBOUND 0x00010000 /* if-bound */ 604 #define PFRULE_GRBOUND 0x00020000 /* group-bound */ 605 606 #define PFSTATE_HIWAT 10000 /* default state table size */ 607 608 struct pf_src_node { 609 RB_ENTRY(pf_src_node) entry; 610 struct pf_addr addr; 611 struct pf_addr raddr; 612 union pf_rule_ptr rule; 613 struct pfi_kif *kif; 614 u_int32_t bytes; 615 u_int32_t packets; 616 u_int32_t states; 617 u_int32_t creation; 618 u_int32_t expire; 619 sa_family_t af; 620 u_int8_t ruletype; 621 }; 622 623 #define PFSNODE_HIWAT 10000 /* default source node table size */ 624 625 struct pf_state_scrub { 626 u_int16_t pfss_flags; 627 #define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */ 628 u_int8_t pfss_ttl; /* stashed TTL */ 629 u_int8_t pad; 630 u_int32_t pfss_ts_mod; /* timestamp modulation */ 631 }; 632 633 struct pf_state_host { 634 struct pf_addr addr; 635 u_int16_t port; 636 u_int16_t pad; 637 }; 638 639 struct pf_state_peer { 640 u_int32_t seqlo; /* Max sequence number sent */ 641 u_int32_t seqhi; /* Max the other end ACKd + win */ 642 u_int32_t seqdiff; /* Sequence number modulator */ 643 u_int16_t max_win; /* largest window (pre scaling) */ 644 u_int8_t state; /* active state level */ 645 u_int8_t wscale; /* window scaling factor */ 646 u_int16_t mss; /* Maximum segment size option */ 647 struct pf_state_scrub *scrub; /* state is scrubbed */ 648 }; 649 650 TAILQ_HEAD(pf_state_queue, pf_state); 651 652 struct pf_state { 653 u_int64_t id; 654 union { 655 struct { 656 RB_ENTRY(pf_state) entry_lan_ext; 657 RB_ENTRY(pf_state) entry_ext_gwy; 658 RB_ENTRY(pf_state) entry_id; 659 TAILQ_ENTRY(pf_state) entry_updates; 660 struct pfi_kif *kif; 661 } s; 662 char ifname[IFNAMSIZ]; 663 } u; 664 struct pf_state_host lan; 665 struct pf_state_host gwy; 666 struct pf_state_host ext; 667 struct pf_state_peer src; 668 struct pf_state_peer dst; 669 union pf_rule_ptr rule; 670 union pf_rule_ptr anchor; 671 union pf_rule_ptr nat_rule; 672 struct pf_addr rt_addr; 673 struct pfi_kif *rt_kif; 674 struct pf_src_node *src_node; 675 struct pf_src_node *nat_src_node; 676 u_int32_t creation; 677 u_int32_t expire; 678 u_int32_t pfsync_time; 679 u_int32_t packets[2]; 680 u_int32_t bytes[2]; 681 u_int32_t creatorid; 682 sa_family_t af; 683 u_int8_t proto; 684 u_int8_t direction; 685 u_int8_t log; 686 u_int8_t allow_opts; 687 u_int8_t timeout; 688 u_int8_t sync_flags; 689 #define PFSTATE_NOSYNC 0x01 690 #define PFSTATE_FROMSYNC 0x02 691 u_int8_t pad; 692 }; 693 694 TAILQ_HEAD(pf_rulequeue, pf_rule); 695 696 struct pf_anchor; 697 698 struct pf_ruleset { 699 TAILQ_ENTRY(pf_ruleset) entries; 700 #define PF_RULESET_NAME_SIZE 16 701 char name[PF_RULESET_NAME_SIZE]; 702 struct { 703 struct pf_rulequeue queues[2]; 704 struct { 705 struct pf_rulequeue *ptr; 706 u_int32_t ticket; 707 int open; 708 } active, inactive; 709 } rules[PF_RULESET_MAX]; 710 struct pf_anchor *anchor; 711 u_int32_t tticket; 712 int tables; 713 int topen; 714 }; 715 716 TAILQ_HEAD(pf_rulesetqueue, pf_ruleset); 717 718 struct pf_anchor { 719 TAILQ_ENTRY(pf_anchor) entries; 720 char name[PF_ANCHOR_NAME_SIZE]; 721 struct pf_rulesetqueue rulesets; 722 int tables; 723 }; 724 725 TAILQ_HEAD(pf_anchorqueue, pf_anchor); 726 727 #define PF_RESERVED_ANCHOR "_pf" 728 #define PF_INTERFACE_RULESET "_if" 729 730 #define PFR_TFLAG_PERSIST 0x00000001 731 #define PFR_TFLAG_CONST 0x00000002 732 #define PFR_TFLAG_ACTIVE 0x00000004 733 #define PFR_TFLAG_INACTIVE 0x00000008 734 #define PFR_TFLAG_REFERENCED 0x00000010 735 #define PFR_TFLAG_REFDANCHOR 0x00000020 736 #define PFR_TFLAG_USRMASK 0x00000003 737 #define PFR_TFLAG_SETMASK 0x0000003C 738 #define PFR_TFLAG_ALLMASK 0x0000003F 739 740 struct pfr_table { 741 char pfrt_anchor[PF_ANCHOR_NAME_SIZE]; 742 char pfrt_ruleset[PF_RULESET_NAME_SIZE]; 743 char pfrt_name[PF_TABLE_NAME_SIZE]; 744 u_int32_t pfrt_flags; 745 u_int8_t pfrt_fback; 746 }; 747 748 enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED, 749 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE, 750 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_MAX }; 751 752 struct pfr_addr { 753 union { 754 struct in_addr _pfra_ip4addr; 755 struct in6_addr _pfra_ip6addr; 756 } pfra_u; 757 u_int8_t pfra_af; 758 u_int8_t pfra_net; 759 u_int8_t pfra_not; 760 u_int8_t pfra_fback; 761 }; 762 #define pfra_ip4addr pfra_u._pfra_ip4addr 763 #define pfra_ip6addr pfra_u._pfra_ip6addr 764 765 enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX }; 766 enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX }; 767 #define PFR_OP_XPASS PFR_OP_ADDR_MAX 768 769 struct pfr_astats { 770 struct pfr_addr pfras_a; 771 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 772 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 773 long pfras_tzero; 774 }; 775 776 enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX }; 777 778 struct pfr_tstats { 779 struct pfr_table pfrts_t; 780 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 781 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 782 u_int64_t pfrts_match; 783 u_int64_t pfrts_nomatch; 784 long pfrts_tzero; 785 int pfrts_cnt; 786 int pfrts_refcnt[PFR_REFCNT_MAX]; 787 }; 788 #define pfrts_name pfrts_t.pfrt_name 789 #define pfrts_flags pfrts_t.pfrt_flags 790 791 SLIST_HEAD(pfr_kentryworkq, pfr_kentry); 792 struct pfr_kentry { 793 struct radix_node pfrke_node[2]; 794 union sockaddr_union pfrke_sa; 795 u_int64_t pfrke_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 796 u_int64_t pfrke_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 797 SLIST_ENTRY(pfr_kentry) pfrke_workq; 798 long pfrke_tzero; 799 u_int8_t pfrke_af; 800 u_int8_t pfrke_net; 801 u_int8_t pfrke_not; 802 u_int8_t pfrke_mark; 803 }; 804 805 SLIST_HEAD(pfr_ktableworkq, pfr_ktable); 806 RB_HEAD(pfr_ktablehead, pfr_ktable); 807 struct pfr_ktable { 808 struct pfr_tstats pfrkt_ts; 809 RB_ENTRY(pfr_ktable) pfrkt_tree; 810 SLIST_ENTRY(pfr_ktable) pfrkt_workq; 811 struct radix_node_head *pfrkt_ip4; 812 struct radix_node_head *pfrkt_ip6; 813 struct pfr_ktable *pfrkt_shadow; 814 struct pfr_ktable *pfrkt_root; 815 struct pf_ruleset *pfrkt_rs; 816 long pfrkt_larg; 817 int pfrkt_nflags; 818 }; 819 #define pfrkt_t pfrkt_ts.pfrts_t 820 #define pfrkt_name pfrkt_t.pfrt_name 821 #define pfrkt_anchor pfrkt_t.pfrt_anchor 822 #define pfrkt_ruleset pfrkt_t.pfrt_ruleset 823 #define pfrkt_flags pfrkt_t.pfrt_flags 824 #define pfrkt_cnt pfrkt_ts.pfrts_cnt 825 #define pfrkt_refcnt pfrkt_ts.pfrts_refcnt 826 #define pfrkt_packets pfrkt_ts.pfrts_packets 827 #define pfrkt_bytes pfrkt_ts.pfrts_bytes 828 #define pfrkt_match pfrkt_ts.pfrts_match 829 #define pfrkt_nomatch pfrkt_ts.pfrts_nomatch 830 #define pfrkt_tzero pfrkt_ts.pfrts_tzero 831 832 RB_HEAD(pf_state_tree_lan_ext, pf_state); 833 RB_PROTOTYPE(pf_state_tree_lan_ext, pf_state, 834 u.s.entry_lan_ext, pf_state_compare_lan_ext); 835 836 RB_HEAD(pf_state_tree_ext_gwy, pf_state); 837 RB_PROTOTYPE(pf_state_tree_ext_gwy, pf_state, 838 u.s.entry_ext_gwy, pf_state_compare_ext_gwy); 839 840 struct pfi_if { 841 char pfif_name[IFNAMSIZ]; 842 u_int64_t pfif_packets[2][2][2]; 843 u_int64_t pfif_bytes[2][2][2]; 844 u_int64_t pfif_addcnt; 845 u_int64_t pfif_delcnt; 846 long pfif_tzero; 847 int pfif_states; 848 int pfif_rules; 849 int pfif_flags; 850 }; 851 852 TAILQ_HEAD(pfi_grouphead, pfi_kif); 853 TAILQ_HEAD(pfi_statehead, pfi_kif); 854 RB_HEAD(pfi_ifhead, pfi_kif); 855 struct pfi_kif { 856 struct pfi_if pfik_if; 857 RB_ENTRY(pfi_kif) pfik_tree; 858 struct pf_state_tree_lan_ext pfik_lan_ext; 859 struct pf_state_tree_ext_gwy pfik_ext_gwy; 860 struct pfi_grouphead pfik_grouphead; 861 TAILQ_ENTRY(pfi_kif) pfik_instances; 862 TAILQ_ENTRY(pfi_kif) pfik_w_states; 863 struct hook_desc_head *pfik_ah_head; 864 void *pfik_ah_cookie; 865 struct pfi_kif *pfik_parent; 866 struct ifnet *pfik_ifp; 867 int pfik_states; 868 int pfik_rules; 869 }; 870 #define pfik_name pfik_if.pfif_name 871 #define pfik_packets pfik_if.pfif_packets 872 #define pfik_bytes pfik_if.pfif_bytes 873 #define pfik_tzero pfik_if.pfif_tzero 874 #define pfik_flags pfik_if.pfif_flags 875 #define pfik_addcnt pfik_if.pfif_addcnt 876 #define pfik_delcnt pfik_if.pfif_delcnt 877 #define pfik_states pfik_if.pfif_states 878 #define pfik_rules pfik_if.pfif_rules 879 880 #define PFI_IFLAG_GROUP 0x0001 /* group of interfaces */ 881 #define PFI_IFLAG_INSTANCE 0x0002 /* single instance */ 882 #define PFI_IFLAG_CLONABLE 0x0010 /* clonable group */ 883 #define PFI_IFLAG_DYNAMIC 0x0020 /* dynamic group */ 884 #define PFI_IFLAG_ATTACHED 0x0040 /* interface attached */ 885 #define PFI_IFLAG_PLACEHOLDER 0x8000 /* placeholder group/interface */ 886 887 struct pf_pdesc { 888 u_int64_t tot_len; /* Make Mickey money */ 889 union { 890 struct tcphdr *tcp; 891 struct udphdr *udp; 892 struct icmp *icmp; 893 #ifdef INET6 894 struct icmp6_hdr *icmp6; 895 #endif /* INET6 */ 896 void *any; 897 } hdr; 898 struct pf_addr baddr; /* address before translation */ 899 struct pf_addr naddr; /* address after translation */ 900 struct pf_rule *nat_rule; /* nat/rdr rule applied to packet */ 901 struct pf_addr *src; 902 struct pf_addr *dst; 903 u_int16_t *ip_sum; 904 u_int32_t p_len; /* total length of payload */ 905 u_int16_t flags; /* Let SCRUB trigger behavior in 906 * state code. Easier than tags */ 907 #define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */ 908 sa_family_t af; 909 u_int8_t proto; 910 u_int8_t tos; 911 }; 912 913 /* flags for RDR options */ 914 #define PF_DPORT_RANGE 0x01 /* Dest port uses range */ 915 #define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */ 916 917 /* Reasons code for passing/dropping a packet */ 918 #define PFRES_MATCH 0 /* Explicit match of a rule */ 919 #define PFRES_BADOFF 1 /* Bad offset for pull_hdr */ 920 #define PFRES_FRAG 2 /* Dropping following fragment */ 921 #define PFRES_SHORT 3 /* Dropping short packet */ 922 #define PFRES_NORM 4 /* Dropping by normalizer */ 923 #define PFRES_MEMORY 5 /* Dropped due to lacking mem */ 924 #define PFRES_MAX 6 /* total+1 */ 925 926 #define PFRES_NAMES { \ 927 "match", \ 928 "bad-offset", \ 929 "fragment", \ 930 "short", \ 931 "normalize", \ 932 "memory", \ 933 NULL \ 934 } 935 936 /* UDP state enumeration */ 937 #define PFUDPS_NO_TRAFFIC 0 938 #define PFUDPS_SINGLE 1 939 #define PFUDPS_MULTIPLE 2 940 941 #define PFUDPS_NSTATES 3 /* number of state levels */ 942 943 #define PFUDPS_NAMES { \ 944 "NO_TRAFFIC", \ 945 "SINGLE", \ 946 "MULTIPLE", \ 947 NULL \ 948 } 949 950 /* Other protocol state enumeration */ 951 #define PFOTHERS_NO_TRAFFIC 0 952 #define PFOTHERS_SINGLE 1 953 #define PFOTHERS_MULTIPLE 2 954 955 #define PFOTHERS_NSTATES 3 /* number of state levels */ 956 957 #define PFOTHERS_NAMES { \ 958 "NO_TRAFFIC", \ 959 "SINGLE", \ 960 "MULTIPLE", \ 961 NULL \ 962 } 963 964 #define FCNT_STATE_SEARCH 0 965 #define FCNT_STATE_INSERT 1 966 #define FCNT_STATE_REMOVALS 2 967 #define FCNT_MAX 3 968 969 #define SCNT_SRC_NODE_SEARCH 0 970 #define SCNT_SRC_NODE_INSERT 1 971 #define SCNT_SRC_NODE_REMOVALS 2 972 #define SCNT_MAX 3 973 974 #define ACTION_SET(a, x) \ 975 do { \ 976 if ((a) != NULL) \ 977 *(a) = (x); \ 978 } while (0) 979 980 #define REASON_SET(a, x) \ 981 do { \ 982 if ((a) != NULL) \ 983 *(a) = (x); \ 984 if (x < PFRES_MAX) \ 985 pf_status.counters[x]++; \ 986 } while (0) 987 988 struct pf_status { 989 u_int64_t counters[PFRES_MAX]; 990 u_int64_t fcounters[FCNT_MAX]; 991 u_int64_t scounters[SCNT_MAX]; 992 u_int64_t pcounters[2][2][3]; 993 u_int64_t bcounters[2][2]; 994 u_int64_t stateid; 995 u_int32_t running; 996 u_int32_t states; 997 u_int32_t src_nodes; 998 u_int32_t since; 999 u_int32_t debug; 1000 u_int32_t hostid; 1001 char ifname[IFNAMSIZ]; 1002 }; 1003 1004 struct cbq_opts { 1005 u_int minburst; 1006 u_int maxburst; 1007 u_int pktsize; 1008 u_int maxpktsize; 1009 u_int ns_per_byte; 1010 u_int maxidle; 1011 int minidle; 1012 u_int offtime; 1013 int flags; 1014 }; 1015 1016 struct priq_opts { 1017 int flags; 1018 }; 1019 1020 struct hfsc_opts { 1021 /* real-time service curve */ 1022 u_int rtsc_m1; /* slope of the 1st segment in bps */ 1023 u_int rtsc_d; /* the x-projection of m1 in msec */ 1024 u_int rtsc_m2; /* slope of the 2nd segment in bps */ 1025 /* link-sharing service curve */ 1026 u_int lssc_m1; 1027 u_int lssc_d; 1028 u_int lssc_m2; 1029 /* upper-limit service curve */ 1030 u_int ulsc_m1; 1031 u_int ulsc_d; 1032 u_int ulsc_m2; 1033 int flags; 1034 }; 1035 1036 struct pf_altq { 1037 char ifname[IFNAMSIZ]; 1038 1039 void *altq_disc; /* discipline-specific state */ 1040 TAILQ_ENTRY(pf_altq) entries; 1041 1042 /* scheduler spec */ 1043 u_int8_t scheduler; /* scheduler type */ 1044 u_int16_t tbrsize; /* tokenbucket regulator size */ 1045 u_int32_t ifbandwidth; /* interface bandwidth */ 1046 1047 /* queue spec */ 1048 char qname[PF_QNAME_SIZE]; /* queue name */ 1049 char parent[PF_QNAME_SIZE]; /* parent name */ 1050 u_int32_t parent_qid; /* parent queue id */ 1051 u_int32_t bandwidth; /* queue bandwidth */ 1052 u_int8_t priority; /* priority */ 1053 u_int16_t qlimit; /* queue size limit */ 1054 u_int16_t flags; /* misc flags */ 1055 union { 1056 struct cbq_opts cbq_opts; 1057 struct priq_opts priq_opts; 1058 struct hfsc_opts hfsc_opts; 1059 } pq_u; 1060 1061 u_int32_t qid; /* return value */ 1062 }; 1063 1064 struct pf_tagname { 1065 TAILQ_ENTRY(pf_tagname) entries; 1066 char name[PF_TAG_NAME_SIZE]; 1067 u_int16_t tag; 1068 int ref; 1069 }; 1070 1071 #define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */ 1072 #define PFFRAG_FRAG_HIWAT 1000 /* Number of fragmented packets */ 1073 #define PFFRAG_FRCENT_HIWAT 50000 /* Number of fragment cache entries */ 1074 #define PFFRAG_FRCACHE_HIWAT 10000 /* Number of fragment descriptors */ 1075 1076 /* 1077 * ioctl parameter structures 1078 */ 1079 1080 struct pfioc_pooladdr { 1081 u_int32_t action; 1082 u_int32_t ticket; 1083 u_int32_t nr; 1084 u_int32_t r_num; 1085 u_int8_t r_action; 1086 u_int8_t r_last; 1087 u_int8_t af; 1088 char anchor[PF_ANCHOR_NAME_SIZE]; 1089 char ruleset[PF_RULESET_NAME_SIZE]; 1090 struct pf_pooladdr addr; 1091 }; 1092 1093 struct pfioc_rule { 1094 u_int32_t action; 1095 u_int32_t ticket; 1096 u_int32_t pool_ticket; 1097 u_int32_t nr; 1098 char anchor[PF_ANCHOR_NAME_SIZE]; 1099 char ruleset[PF_RULESET_NAME_SIZE]; 1100 struct pf_rule rule; 1101 }; 1102 1103 struct pfioc_natlook { 1104 struct pf_addr saddr; 1105 struct pf_addr daddr; 1106 struct pf_addr rsaddr; 1107 struct pf_addr rdaddr; 1108 u_int16_t sport; 1109 u_int16_t dport; 1110 u_int16_t rsport; 1111 u_int16_t rdport; 1112 sa_family_t af; 1113 u_int8_t proto; 1114 u_int8_t direction; 1115 }; 1116 1117 struct pfioc_state { 1118 u_int32_t nr; 1119 struct pf_state state; 1120 }; 1121 1122 struct pfioc_state_kill { 1123 /* XXX returns the number of states killed in psk_af */ 1124 sa_family_t psk_af; 1125 int psk_proto; 1126 struct pf_rule_addr psk_src; 1127 struct pf_rule_addr psk_dst; 1128 char psk_ifname[IFNAMSIZ]; 1129 }; 1130 1131 struct pfioc_states { 1132 int ps_len; 1133 union { 1134 caddr_t psu_buf; 1135 struct pf_state *psu_states; 1136 } ps_u; 1137 #define ps_buf ps_u.psu_buf 1138 #define ps_states ps_u.psu_states 1139 }; 1140 1141 struct pfioc_src_nodes { 1142 int psn_len; 1143 union { 1144 caddr_t psu_buf; 1145 struct pf_src_node *psu_src_nodes; 1146 } psn_u; 1147 #define psn_buf psn_u.psu_buf 1148 #define psn_src_nodes psn_u.psu_src_nodes 1149 }; 1150 1151 struct pfioc_if { 1152 char ifname[IFNAMSIZ]; 1153 }; 1154 1155 struct pfioc_tm { 1156 int timeout; 1157 int seconds; 1158 }; 1159 1160 struct pfioc_limit { 1161 int index; 1162 unsigned limit; 1163 }; 1164 1165 struct pfioc_altq { 1166 u_int32_t action; 1167 u_int32_t ticket; 1168 u_int32_t nr; 1169 struct pf_altq altq; 1170 }; 1171 1172 struct pfioc_qstats { 1173 u_int32_t ticket; 1174 u_int32_t nr; 1175 void *buf; 1176 int nbytes; 1177 u_int8_t scheduler; 1178 }; 1179 1180 struct pfioc_anchor { 1181 u_int32_t nr; 1182 char name[PF_ANCHOR_NAME_SIZE]; 1183 }; 1184 1185 struct pfioc_ruleset { 1186 u_int32_t nr; 1187 char anchor[PF_ANCHOR_NAME_SIZE]; 1188 char name[PF_RULESET_NAME_SIZE]; 1189 }; 1190 1191 #define PF_RULESET_ALTQ (PF_RULESET_MAX) 1192 #define PF_RULESET_TABLE (PF_RULESET_MAX+1) 1193 struct pfioc_trans { 1194 int size; /* number of elements */ 1195 int esize; /* size of each element in bytes */ 1196 struct pfioc_trans_e { 1197 int rs_num; 1198 char anchor[PF_ANCHOR_NAME_SIZE]; 1199 char ruleset[PF_RULESET_NAME_SIZE]; 1200 u_int32_t ticket; 1201 } *array; 1202 }; 1203 1204 #define PFR_FLAG_ATOMIC 0x00000001 1205 #define PFR_FLAG_DUMMY 0x00000002 1206 #define PFR_FLAG_FEEDBACK 0x00000004 1207 #define PFR_FLAG_CLSTATS 0x00000008 1208 #define PFR_FLAG_ADDRSTOO 0x00000010 1209 #define PFR_FLAG_REPLACE 0x00000020 1210 #define PFR_FLAG_ALLRSETS 0x00000040 1211 #define PFR_FLAG_ALLMASK 0x0000007F 1212 #ifdef _KERNEL 1213 #define PFR_FLAG_USERIOCTL 0x10000000 1214 #endif 1215 1216 struct pfioc_table { 1217 struct pfr_table pfrio_table; 1218 void *pfrio_buffer; 1219 int pfrio_esize; 1220 int pfrio_size; 1221 int pfrio_size2; 1222 int pfrio_nadd; 1223 int pfrio_ndel; 1224 int pfrio_nchange; 1225 int pfrio_flags; 1226 u_int32_t pfrio_ticket; 1227 }; 1228 #define pfrio_exists pfrio_nadd 1229 #define pfrio_nzero pfrio_nadd 1230 #define pfrio_nmatch pfrio_nadd 1231 #define pfrio_naddr pfrio_size2 1232 #define pfrio_setflag pfrio_size2 1233 #define pfrio_clrflag pfrio_nadd 1234 1235 1236 #define PFI_FLAG_GROUP 0x0001 /* gets groups of interfaces */ 1237 #define PFI_FLAG_INSTANCE 0x0002 /* gets single interfaces */ 1238 #define PFI_FLAG_ALLMASK 0x0003 1239 1240 struct pfioc_iface { 1241 char pfiio_name[IFNAMSIZ]; 1242 void *pfiio_buffer; 1243 int pfiio_esize; 1244 int pfiio_size; 1245 int pfiio_nzero; 1246 int pfiio_flags; 1247 }; 1248 1249 1250 /* 1251 * ioctl operations 1252 */ 1253 1254 #define DIOCSTART _IO ('D', 1) 1255 #define DIOCSTOP _IO ('D', 2) 1256 #define DIOCBEGINRULES _IOWR('D', 3, struct pfioc_rule) 1257 #define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule) 1258 #define DIOCCOMMITRULES _IOWR('D', 5, struct pfioc_rule) 1259 #define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule) 1260 #define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule) 1261 /* XXX cut 8 - 17 */ 1262 #define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill) 1263 #define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state) 1264 #define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if) 1265 #define DIOCGETSTATUS _IOWR('D', 21, struct pf_status) 1266 #define DIOCCLRSTATUS _IO ('D', 22) 1267 #define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook) 1268 #define DIOCSETDEBUG _IOWR('D', 24, u_int32_t) 1269 #define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states) 1270 #define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule) 1271 /* XXX cut 26 - 28 */ 1272 #define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm) 1273 #define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm) 1274 #define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state) 1275 #define DIOCCLRRULECTRS _IO ('D', 38) 1276 #define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit) 1277 #define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit) 1278 #define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill) 1279 #define DIOCSTARTALTQ _IO ('D', 42) 1280 #define DIOCSTOPALTQ _IO ('D', 43) 1281 #define DIOCBEGINALTQS _IOWR('D', 44, u_int32_t) 1282 #define DIOCADDALTQ _IOWR('D', 45, struct pfioc_altq) 1283 #define DIOCCOMMITALTQS _IOWR('D', 46, u_int32_t) 1284 #define DIOCGETALTQS _IOWR('D', 47, struct pfioc_altq) 1285 #define DIOCGETALTQ _IOWR('D', 48, struct pfioc_altq) 1286 #define DIOCCHANGEALTQ _IOWR('D', 49, struct pfioc_altq) 1287 #define DIOCGETQSTATS _IOWR('D', 50, struct pfioc_qstats) 1288 #define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr) 1289 #define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr) 1290 #define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr) 1291 #define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr) 1292 #define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr) 1293 #define DIOCGETANCHORS _IOWR('D', 56, struct pfioc_anchor) 1294 #define DIOCGETANCHOR _IOWR('D', 57, struct pfioc_anchor) 1295 #define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset) 1296 #define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset) 1297 #define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table) 1298 #define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table) 1299 #define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table) 1300 #define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table) 1301 #define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table) 1302 #define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table) 1303 #define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table) 1304 #define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table) 1305 #define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table) 1306 #define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table) 1307 #define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table) 1308 #define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table) 1309 #define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table) 1310 #define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table) 1311 #define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table) 1312 #define DIOCRINABEGIN _IOWR('D', 75, struct pfioc_table) 1313 #define DIOCRINACOMMIT _IOWR('D', 76, struct pfioc_table) 1314 #define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table) 1315 #define DIOCOSFPFLUSH _IO('D', 78) 1316 #define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl) 1317 #define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl) 1318 #define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans) 1319 #define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans) 1320 #define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans) 1321 #define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes) 1322 #define DIOCCLRSRCNODES _IO('D', 85) 1323 #define DIOCSETHOSTID _IOWR('D', 86, u_int32_t) 1324 #define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface) 1325 #define DIOCICLRISTATS _IOWR('D', 88, struct pfioc_iface) 1326 struct pf_ifspeed { 1327 char ifname[IFNAMSIZ]; 1328 u_int32_t baudrate; 1329 }; 1330 #define DIOCGIFSPEED _IOWR('D', 89, struct pf_ifspeed) 1331 1332 #ifdef _KERNEL 1333 RB_HEAD(pf_src_tree, pf_src_node); 1334 RB_PROTOTYPE(pf_src_tree, pf_src_node, entry, pf_src_compare); 1335 extern struct pf_src_tree tree_src_tracking; 1336 1337 RB_HEAD(pf_state_tree_id, pf_state); 1338 RB_PROTOTYPE(pf_state_tree_id, pf_state, 1339 entry_id, pf_state_compare_id); 1340 extern struct pf_state_tree_id tree_id; 1341 extern struct pf_state_queue state_updates; 1342 1343 extern struct pf_anchorqueue pf_anchors; 1344 extern struct pf_ruleset pf_main_ruleset; 1345 TAILQ_HEAD(pf_poolqueue, pf_pool); 1346 extern struct pf_poolqueue pf_pools[2]; 1347 TAILQ_HEAD(pf_altqqueue, pf_altq); 1348 extern struct pf_altqqueue pf_altqs[2]; 1349 extern struct pf_palist pf_pabuf; 1350 extern struct pfi_kif **pfi_index2kif; 1351 1352 extern u_int32_t ticket_altqs_active; 1353 extern u_int32_t ticket_altqs_inactive; 1354 extern int altqs_inactive_open; 1355 extern u_int32_t ticket_pabuf; 1356 extern struct pf_altqqueue *pf_altqs_active; 1357 extern struct pf_altqqueue *pf_altqs_inactive; 1358 extern struct pf_poolqueue *pf_pools_active; 1359 extern struct pf_poolqueue *pf_pools_inactive; 1360 extern int pf_tbladdr_setup(struct pf_ruleset *, 1361 struct pf_addr_wrap *); 1362 extern void pf_tbladdr_remove(struct pf_addr_wrap *); 1363 extern void pf_tbladdr_copyout(struct pf_addr_wrap *); 1364 extern void pf_calc_skip_steps(struct pf_rulequeue *); 1365 extern void pf_update_anchor_rules(void); 1366 extern vm_zone_t pf_src_tree_pl, pf_rule_pl; 1367 extern vm_zone_t pf_state_pl, pf_altq_pl, pf_pooladdr_pl; 1368 extern vm_zone_t pfr_ktable_pl, pfr_kentry_pl; 1369 extern vm_zone_t pf_cache_pl, pf_cent_pl; 1370 extern vm_zone_t pf_state_scrub_pl; 1371 extern vm_zone_t pfi_addr_pl; 1372 extern void pf_purge_timeout(void *); 1373 extern void pf_purge_expired_src_nodes(void); 1374 extern void pf_purge_expired_states(void); 1375 extern int pf_insert_state(struct pfi_kif *, 1376 struct pf_state *); 1377 extern int pf_insert_src_node(struct pf_src_node **, 1378 struct pf_rule *, struct pf_addr *, 1379 sa_family_t); 1380 void pf_src_tree_remove_state(struct pf_state *); 1381 extern struct pf_state *pf_find_state_byid(struct pf_state *); 1382 extern struct pf_state *pf_find_state_all(struct pf_state *key, 1383 u_int8_t tree, int *more); 1384 extern struct pf_anchor *pf_find_anchor(const char *); 1385 extern struct pf_ruleset *pf_find_ruleset(char *, char *); 1386 extern struct pf_ruleset *pf_find_or_create_ruleset( 1387 char[PF_ANCHOR_NAME_SIZE], 1388 char[PF_RULESET_NAME_SIZE]); 1389 extern void pf_remove_if_empty_ruleset( 1390 struct pf_ruleset *); 1391 1392 extern struct ifnet *sync_ifp; 1393 extern struct pf_rule pf_default_rule; 1394 extern void pf_addrcpy(struct pf_addr *, struct pf_addr *, 1395 u_int8_t); 1396 void pf_rm_rule(struct pf_rulequeue *, 1397 struct pf_rule *); 1398 1399 #ifdef INET 1400 int pf_test(int, struct ifnet *, struct mbuf **); 1401 #endif /* INET */ 1402 1403 #ifdef INET6 1404 int pf_test6(int, struct ifnet *, struct mbuf **); 1405 void pf_poolmask(struct pf_addr *, struct pf_addr*, 1406 struct pf_addr *, struct pf_addr *, u_int8_t); 1407 void pf_addr_inc(struct pf_addr *, sa_family_t); 1408 #endif /* INET6 */ 1409 1410 void *pf_pull_hdr(struct mbuf *, int, void *, int, u_short *, u_short *, 1411 sa_family_t); 1412 void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t); 1413 int pflog_packet(struct pfi_kif *, struct mbuf *, sa_family_t, u_int8_t, 1414 u_int8_t, struct pf_rule *, struct pf_rule *, struct pf_ruleset *); 1415 int pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *, 1416 struct pf_addr *, sa_family_t); 1417 int pf_match(u_int8_t, u_int32_t, u_int32_t, u_int32_t); 1418 int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t); 1419 int pf_match_uid(u_int8_t, uid_t, uid_t, uid_t); 1420 int pf_match_gid(u_int8_t, gid_t, gid_t, gid_t); 1421 1422 void pf_normalize_init(void); 1423 int pf_normalize_ip(struct mbuf **, int, struct pfi_kif *, u_short *); 1424 int pf_normalize_ip6(struct mbuf **, int, struct pfi_kif *, u_short *); 1425 int pf_normalize_tcp(int, struct pfi_kif *, struct mbuf *, int, int, void *, 1426 struct pf_pdesc *); 1427 void pf_normalize_tcp_cleanup(struct pf_state *); 1428 int pf_normalize_tcp_init(struct mbuf *, int, struct pf_pdesc *, 1429 struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *); 1430 int pf_normalize_tcp_stateful(struct mbuf *, int, struct pf_pdesc *, 1431 u_short *, struct tcphdr *, struct pf_state_peer *, 1432 struct pf_state_peer *, int *); 1433 u_int32_t 1434 pf_state_expires(const struct pf_state *); 1435 void pf_purge_expired_fragments(void); 1436 int pf_routable(struct pf_addr *addr, sa_family_t af); 1437 void pfr_initialize(void); 1438 int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t); 1439 void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t, 1440 u_int64_t, int, int, int); 1441 int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, 1442 struct pf_addr **, struct pf_addr **, sa_family_t); 1443 void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *); 1444 struct pfr_ktable * 1445 pfr_attach_table(struct pf_ruleset *, char *); 1446 void pfr_detach_table(struct pfr_ktable *); 1447 int pfr_clr_tables(struct pfr_table *, int *, int); 1448 int pfr_add_tables(struct pfr_table *, int, int *, int); 1449 int pfr_del_tables(struct pfr_table *, int, int *, int); 1450 int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int); 1451 int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int); 1452 int pfr_clr_tstats(struct pfr_table *, int, int *, int); 1453 int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int); 1454 int pfr_clr_addrs(struct pfr_table *, int *, int); 1455 int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1456 int); 1457 int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1458 int); 1459 int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1460 int *, int *, int *, int); 1461 int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int); 1462 int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int); 1463 int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *, 1464 int); 1465 int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1466 int); 1467 int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int); 1468 int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int); 1469 int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int); 1470 int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *, 1471 int *, u_int32_t, int); 1472 1473 void pfi_initialize(void); 1474 void pfi_cleanup(void); 1475 void pfi_attach_clone(struct if_clone *); 1476 void pfi_attach_ifnet(struct ifnet *); 1477 void pfi_detach_ifnet(struct ifnet *); 1478 struct pfi_kif *pfi_lookup_create(const char *); 1479 struct pfi_kif *pfi_lookup_if(const char *); 1480 int pfi_maybe_destroy(struct pfi_kif *); 1481 struct pfi_kif *pfi_attach_rule(const char *); 1482 void pfi_detach_rule(struct pfi_kif *); 1483 void pfi_attach_state(struct pfi_kif *); 1484 void pfi_detach_state(struct pfi_kif *); 1485 int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t); 1486 void pfi_dynaddr_copyout(struct pf_addr_wrap *); 1487 void pfi_dynaddr_remove(struct pf_addr_wrap *); 1488 void pfi_fill_oldstatus(struct pf_status *); 1489 int pfi_clr_istats(const char *, int *, int); 1490 int pfi_get_ifaces(const char *, struct pfi_if *, int *, int); 1491 int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *, 1492 sa_family_t); 1493 1494 extern struct pfi_statehead pfi_statehead; 1495 1496 u_int16_t pf_tagname2tag(char *); 1497 void pf_tag2tagname(u_int16_t, char *); 1498 void pf_tag_unref(u_int16_t); 1499 void pf_tag_packet(struct mbuf *, int); 1500 u_int32_t pf_qname2qid(char *); 1501 void pf_qid2qname(u_int32_t, char *); 1502 void pf_qid_unref(u_int32_t); 1503 1504 extern struct pf_status pf_status; 1505 extern vm_zone_t pf_frent_pl, pf_frag_pl; 1506 1507 struct pf_pool_limit { 1508 void *pp; 1509 unsigned limit; 1510 }; 1511 extern struct pf_pool_limit pf_pool_limits[PF_LIMIT_MAX]; 1512 1513 struct pf_frent { 1514 LIST_ENTRY(pf_frent) fr_next; 1515 struct ip *fr_ip; 1516 struct mbuf *fr_m; 1517 }; 1518 1519 struct pf_frcache { 1520 LIST_ENTRY(pf_frcache) fr_next; 1521 uint16_t fr_off; 1522 uint16_t fr_end; 1523 }; 1524 1525 struct pf_fragment { 1526 RB_ENTRY(pf_fragment) fr_entry; 1527 TAILQ_ENTRY(pf_fragment) frag_next; 1528 struct in_addr fr_src; 1529 struct in_addr fr_dst; 1530 u_int8_t fr_p; /* protocol of this fragment */ 1531 u_int8_t fr_flags; /* status flags */ 1532 u_int16_t fr_id; /* fragment id for reassemble */ 1533 u_int16_t fr_max; /* fragment data max */ 1534 u_int32_t fr_timeout; 1535 #define fr_queue fr_u.fru_queue 1536 #define fr_cache fr_u.fru_cache 1537 union { 1538 LIST_HEAD(pf_fragq, pf_frent) fru_queue; /* buffering */ 1539 LIST_HEAD(pf_cacheq, pf_frcache) fru_cache; /* non-buf */ 1540 } fr_u; 1541 }; 1542 #endif /* _KERNEL */ 1543 1544 /* The fingerprint functions can be linked into userland programs (tcpdump) */ 1545 int pf_osfp_add(struct pf_osfp_ioctl *); 1546 #ifdef _KERNEL 1547 struct pf_osfp_enlist * 1548 pf_osfp_fingerprint(struct pf_pdesc *, struct mbuf *, int, 1549 const struct tcphdr *); 1550 #endif /* _KERNEL */ 1551 struct pf_osfp_enlist * 1552 pf_osfp_fingerprint_hdr(const struct ip *, const struct tcphdr *); 1553 void pf_osfp_flush(void); 1554 int pf_osfp_get(struct pf_osfp_ioctl *); 1555 int pf_osfp_initialize(void); 1556 void pf_osfp_cleanup(void); 1557 int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t); 1558 struct pf_os_fingerprint * 1559 pf_osfp_validate(void); 1560 1561 1562 #endif /* _NET_PFVAR_H_ */ 1563