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 1.5 2008/01/21 21:16:59 nth 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 <net/if_clone.h> 47 #include <netinet/in.h> 48 49 #ifdef _KERNEL 50 #include <vm/vm_zone.h> 51 #endif 52 53 /* 54 * XXX 55 * If we include <netipsec/keydb.h>, we need _KERNEL definition. 56 * This makes pfctl compilation difficult. 57 */ 58 union sockaddr_union { 59 struct sockaddr sa; 60 struct sockaddr_in sin; 61 struct sockaddr_in6 sin6; 62 }; 63 64 #include <netinet/tcp_fsm.h> 65 66 struct ip; 67 68 #define PF_TCPS_PROXY_SRC ((TCP_NSTATES)+0) 69 #define PF_TCPS_PROXY_DST ((TCP_NSTATES)+1) 70 71 enum { PF_INOUT, PF_IN, PF_OUT }; 72 enum { PF_LAN_EXT, PF_EXT_GWY, PF_ID }; 73 enum { PF_PASS, PF_DROP, PF_SCRUB, PF_NAT, PF_NONAT, 74 PF_BINAT, PF_NOBINAT, PF_RDR, PF_NORDR, PF_SYNPROXY_DROP }; 75 enum { PF_RULESET_SCRUB, PF_RULESET_FILTER, PF_RULESET_NAT, 76 PF_RULESET_BINAT, PF_RULESET_RDR, PF_RULESET_MAX }; 77 enum { PF_OP_NONE, PF_OP_IRG, PF_OP_EQ, PF_OP_NE, PF_OP_LT, 78 PF_OP_LE, PF_OP_GT, PF_OP_GE, PF_OP_XRG, PF_OP_RRG }; 79 enum { PF_DEBUG_NONE, PF_DEBUG_URGENT, PF_DEBUG_MISC, PF_DEBUG_NOISY }; 80 enum { PF_CHANGE_NONE, PF_CHANGE_ADD_HEAD, PF_CHANGE_ADD_TAIL, 81 PF_CHANGE_ADD_BEFORE, PF_CHANGE_ADD_AFTER, 82 PF_CHANGE_REMOVE, PF_CHANGE_GET_TICKET }; 83 /* 84 * Note about PFTM_*: real indices into pf_rule.timeout[] come before 85 * PFTM_MAX, special cases afterwards. See pf_state_expires(). 86 */ 87 enum { PFTM_TCP_FIRST_PACKET, PFTM_TCP_OPENING, PFTM_TCP_ESTABLISHED, 88 PFTM_TCP_CLOSING, PFTM_TCP_FIN_WAIT, PFTM_TCP_CLOSED, 89 PFTM_UDP_FIRST_PACKET, PFTM_UDP_SINGLE, PFTM_UDP_MULTIPLE, 90 PFTM_ICMP_FIRST_PACKET, PFTM_ICMP_ERROR_REPLY, 91 PFTM_OTHER_FIRST_PACKET, PFTM_OTHER_SINGLE, 92 PFTM_OTHER_MULTIPLE, PFTM_FRAG, PFTM_INTERVAL, 93 PFTM_ADAPTIVE_START, PFTM_ADAPTIVE_END, PFTM_SRC_NODE, 94 PFTM_MAX, PFTM_PURGE, PFTM_UNTIL_PACKET }; 95 enum { PF_NOPFROUTE, PF_FASTROUTE, PF_ROUTETO, PF_DUPTO, PF_REPLYTO }; 96 enum { PF_LIMIT_STATES, PF_LIMIT_SRC_NODES, PF_LIMIT_FRAGS, PF_LIMIT_MAX }; 97 #define PF_POOL_IDMASK 0x0f 98 enum { PF_POOL_NONE, PF_POOL_BITMASK, PF_POOL_RANDOM, 99 PF_POOL_SRCHASH, PF_POOL_ROUNDROBIN }; 100 enum { PF_ADDR_ADDRMASK, PF_ADDR_NOROUTE, PF_ADDR_DYNIFTL, 101 PF_ADDR_TABLE }; 102 #define PF_POOL_TYPEMASK 0x0f 103 #define PF_POOL_STICKYADDR 0x20 104 #define PF_WSCALE_FLAG 0x80 105 #define PF_WSCALE_MASK 0x0f 106 107 struct pf_addr { 108 union { 109 struct in_addr v4; 110 struct in6_addr v6; 111 u_int8_t addr8[16]; 112 u_int16_t addr16[8]; 113 u_int32_t addr32[4]; 114 } pfa; /* 128-bit address */ 115 #define v4 pfa.v4 116 #define v6 pfa.v6 117 #define addr8 pfa.addr8 118 #define addr16 pfa.addr16 119 #define addr32 pfa.addr32 120 }; 121 122 #define PF_TABLE_NAME_SIZE 32 123 124 #define PFI_AFLAG_NETWORK 0x01 125 #define PFI_AFLAG_BROADCAST 0x02 126 #define PFI_AFLAG_PEER 0x04 127 #define PFI_AFLAG_MODEMASK 0x07 128 #define PFI_AFLAG_NOALIAS 0x08 129 130 struct pf_addr_wrap { 131 union { 132 struct { 133 struct pf_addr addr; 134 struct pf_addr mask; 135 } a; 136 char ifname[IFNAMSIZ]; 137 char tblname[PF_TABLE_NAME_SIZE]; 138 } v; 139 union { 140 struct pfi_dynaddr *dyn; 141 struct pfr_ktable *tbl; 142 int dyncnt; 143 int tblcnt; 144 } p; 145 u_int8_t type; /* PF_ADDR_* */ 146 u_int8_t iflags; /* PFI_AFLAG_* */ 147 }; 148 149 #ifdef _KERNEL 150 151 struct pfi_dynaddr { 152 struct pf_addr pfid_addr4; 153 struct pf_addr pfid_mask4; 154 struct pf_addr pfid_addr6; 155 struct pf_addr pfid_mask6; 156 struct pfr_ktable *pfid_kt; 157 struct pfi_kif *pfid_kif; 158 void *pfid_hook_cookie; 159 int pfid_net; /* optional mask, or 128 */ 160 int pfid_acnt4; /* address count, IPv4 */ 161 int pfid_acnt6; /* address count, IPv6 */ 162 sa_family_t pfid_af; /* rule address family */ 163 u_int8_t pfid_iflags; /* PFI_AFLAG_* */ 164 }; 165 166 /* 167 * Address manipulation macros 168 */ 169 170 /* XXX correct values for zinit? */ 171 #define ZONE_CREATE(var, type, desc) \ 172 var = zinit(desc, sizeof(type), 1, ZONE_DESTROYABLE, 1); \ 173 if (var == NULL) break 174 #define ZONE_DESTROY(a) zdestroy(a) 175 176 #define pool_get(p, f) zalloc(*(p)) 177 #define pool_put(p, o) zfree(*(p), (o)) 178 179 #define PF_NAME "pf" 180 181 #define PF_MODVER 1 182 #define PFLOG_MODVER 1 183 #define PFSYNC_MODVER 1 184 185 #define PFLOG_MINVER 1 186 #define PFLOG_PREFVER PFLOG_MODVER 187 #define PFLOG_MAXVER 1 188 #define PFSYNC_MINVER 1 189 #define PFSYNC_PREFVER PFSYNC_MODVER 190 #define PFSYNC_MAXVER 1 191 192 /* prototyped for pf_subr.c */ 193 struct hook_desc { 194 TAILQ_ENTRY(hook_desc) hd_list; 195 void (*hd_fn)(void *); 196 void *hd_arg; 197 }; 198 TAILQ_HEAD(hook_desc_head, hook_desc); 199 200 void *hook_establish(struct hook_desc_head *, int, void (*)(void *), void *); 201 void hook_disestablish(struct hook_desc_head *, void *); 202 void dohooks(struct hook_desc_head *, int); 203 204 #define HOOK_REMOVE 0x01 205 #define HOOK_FREE 0x02 206 207 #ifdef INET 208 #ifndef INET6 209 #define PF_INET_ONLY 210 #endif /* ! INET6 */ 211 #endif /* INET */ 212 213 #ifdef INET6 214 #ifndef INET 215 #define PF_INET6_ONLY 216 #endif /* ! INET */ 217 #endif /* INET6 */ 218 219 #ifdef INET 220 #ifdef INET6 221 #define PF_INET_INET6 222 #endif /* INET6 */ 223 #endif /* INET */ 224 225 #else 226 227 #define PF_INET_INET6 228 229 #endif /* _KERNEL */ 230 231 /* Both IPv4 and IPv6 */ 232 #ifdef PF_INET_INET6 233 234 #define PF_AEQ(a, b, c) \ 235 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \ 236 ((a)->addr32[3] == (b)->addr32[3] && \ 237 (a)->addr32[2] == (b)->addr32[2] && \ 238 (a)->addr32[1] == (b)->addr32[1] && \ 239 (a)->addr32[0] == (b)->addr32[0])) \ 240 241 #define PF_ANEQ(a, b, c) \ 242 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \ 243 ((a)->addr32[3] != (b)->addr32[3] || \ 244 (a)->addr32[2] != (b)->addr32[2] || \ 245 (a)->addr32[1] != (b)->addr32[1] || \ 246 (a)->addr32[0] != (b)->addr32[0])) \ 247 248 #define PF_AZERO(a, c) \ 249 ((c == AF_INET && !(a)->addr32[0]) || \ 250 (!(a)->addr32[0] && !(a)->addr32[1] && \ 251 !(a)->addr32[2] && !(a)->addr32[3] )) \ 252 253 #define PF_MATCHA(n, a, m, b, f) \ 254 pf_match_addr(n, a, m, b, f) 255 256 #define PF_ACPY(a, b, f) \ 257 pf_addrcpy(a, b, f) 258 259 #define PF_AINC(a, f) \ 260 pf_addr_inc(a, f) 261 262 #define PF_POOLMASK(a, b, c, d, f) \ 263 pf_poolmask(a, b, c, d, f) 264 265 #else 266 267 /* Just IPv6 */ 268 269 #ifdef PF_INET6_ONLY 270 271 #define PF_AEQ(a, b, c) \ 272 ((a)->addr32[3] == (b)->addr32[3] && \ 273 (a)->addr32[2] == (b)->addr32[2] && \ 274 (a)->addr32[1] == (b)->addr32[1] && \ 275 (a)->addr32[0] == (b)->addr32[0]) \ 276 277 #define PF_ANEQ(a, b, c) \ 278 ((a)->addr32[3] != (b)->addr32[3] || \ 279 (a)->addr32[2] != (b)->addr32[2] || \ 280 (a)->addr32[1] != (b)->addr32[1] || \ 281 (a)->addr32[0] != (b)->addr32[0]) \ 282 283 #define PF_AZERO(a, c) \ 284 (!(a)->addr32[0] && \ 285 !(a)->addr32[1] && \ 286 !(a)->addr32[2] && \ 287 !(a)->addr32[3] ) \ 288 289 #define PF_MATCHA(n, a, m, b, f) \ 290 pf_match_addr(n, a, m, b, f) 291 292 #define PF_ACPY(a, b, f) \ 293 pf_addrcpy(a, b, f) 294 295 #define PF_AINC(a, f) \ 296 pf_addr_inc(a, f) 297 298 #define PF_POOLMASK(a, b, c, d, f) \ 299 pf_poolmask(a, b, c, d, f) 300 301 #else 302 303 /* Just IPv4 */ 304 #ifdef PF_INET_ONLY 305 306 #define PF_AEQ(a, b, c) \ 307 ((a)->addr32[0] == (b)->addr32[0]) 308 309 #define PF_ANEQ(a, b, c) \ 310 ((a)->addr32[0] != (b)->addr32[0]) 311 312 #define PF_AZERO(a, c) \ 313 (!(a)->addr32[0]) 314 315 #define PF_MATCHA(n, a, m, b, f) \ 316 pf_match_addr(n, a, m, b, f) 317 318 #define PF_ACPY(a, b, f) \ 319 (a)->v4.s_addr = (b)->v4.s_addr 320 321 #define PF_AINC(a, f) \ 322 do { \ 323 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \ 324 } while (0) 325 326 #define PF_POOLMASK(a, b, c, d, f) \ 327 do { \ 328 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \ 329 (((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \ 330 } while (0) 331 332 #endif /* PF_INET_ONLY */ 333 #endif /* PF_INET6_ONLY */ 334 #endif /* PF_INET_INET6 */ 335 336 #define PF_MISMATCHAW(aw, x, af, not) \ 337 ( \ 338 (((aw)->type == PF_ADDR_NOROUTE && \ 339 pf_routable((x), (af))) || \ 340 ((aw)->type == PF_ADDR_TABLE && \ 341 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \ 342 ((aw)->type == PF_ADDR_DYNIFTL && \ 343 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \ 344 ((aw)->type == PF_ADDR_ADDRMASK && \ 345 !PF_AZERO(&(aw)->v.a.mask, (af)) && \ 346 !PF_MATCHA(0, &(aw)->v.a.addr, \ 347 &(aw)->v.a.mask, (x), (af)))) != \ 348 (not) \ 349 ) 350 351 struct pf_rule_uid { 352 uid_t uid[2]; 353 u_int8_t op; 354 }; 355 356 struct pf_rule_gid { 357 uid_t gid[2]; 358 u_int8_t op; 359 }; 360 361 struct pf_rule_addr { 362 struct pf_addr_wrap addr; 363 u_int16_t port[2]; 364 u_int8_t not; 365 u_int8_t port_op; 366 }; 367 368 struct pf_pooladdr { 369 struct pf_addr_wrap addr; 370 TAILQ_ENTRY(pf_pooladdr) entries; 371 char ifname[IFNAMSIZ]; 372 struct pfi_kif *kif; 373 }; 374 375 TAILQ_HEAD(pf_palist, pf_pooladdr); 376 377 struct pf_poolhashkey { 378 union { 379 u_int8_t key8[16]; 380 u_int16_t key16[8]; 381 u_int32_t key32[4]; 382 } pfk; /* 128-bit hash key */ 383 #define key8 pfk.key8 384 #define key16 pfk.key16 385 #define key32 pfk.key32 386 }; 387 388 struct pf_pool { 389 struct pf_palist list; 390 struct pf_pooladdr *cur; 391 struct pf_poolhashkey key; 392 struct pf_addr counter; 393 int tblidx; 394 u_int16_t proxy_port[2]; 395 u_int8_t port_op; 396 u_int8_t opts; 397 }; 398 399 400 /* A packed Operating System description for fingerprinting */ 401 typedef u_int32_t pf_osfp_t; 402 #define PF_OSFP_ANY ((pf_osfp_t)0) 403 #define PF_OSFP_UNKNOWN ((pf_osfp_t)-1) 404 #define PF_OSFP_NOMATCH ((pf_osfp_t)-2) 405 406 struct pf_osfp_entry { 407 SLIST_ENTRY(pf_osfp_entry) fp_entry; 408 pf_osfp_t fp_os; 409 int fp_enflags; 410 #define PF_OSFP_EXPANDED 0x001 /* expanded entry */ 411 #define PF_OSFP_GENERIC 0x002 /* generic signature */ 412 #define PF_OSFP_NODETAIL 0x004 /* no p0f details */ 413 #define PF_OSFP_LEN 32 414 char fp_class_nm[PF_OSFP_LEN]; 415 char fp_version_nm[PF_OSFP_LEN]; 416 char fp_subtype_nm[PF_OSFP_LEN]; 417 }; 418 #define PF_OSFP_ENTRY_EQ(a, b) \ 419 ((a)->fp_os == (b)->fp_os && \ 420 memcmp((a)->fp_class_nm, (b)->fp_class_nm, PF_OSFP_LEN) == 0 && \ 421 memcmp((a)->fp_version_nm, (b)->fp_version_nm, PF_OSFP_LEN) == 0 && \ 422 memcmp((a)->fp_subtype_nm, (b)->fp_subtype_nm, PF_OSFP_LEN) == 0) 423 424 /* handle pf_osfp_t packing */ 425 #define _FP_RESERVED_BIT 1 /* For the special negative #defines */ 426 #define _FP_UNUSED_BITS 1 427 #define _FP_CLASS_BITS 10 /* OS Class (Windows, Linux) */ 428 #define _FP_VERSION_BITS 10 /* OS version (95, 98, NT, 2.4.54, 3.2) */ 429 #define _FP_SUBTYPE_BITS 10 /* patch level (NT SP4, SP3, ECN patch) */ 430 #define PF_OSFP_UNPACK(osfp, class, version, subtype) do { \ 431 (class) = ((osfp) >> (_FP_VERSION_BITS+_FP_SUBTYPE_BITS)) & \ 432 ((1 << _FP_CLASS_BITS) - 1); \ 433 (version) = ((osfp) >> _FP_SUBTYPE_BITS) & \ 434 ((1 << _FP_VERSION_BITS) - 1);\ 435 (subtype) = (osfp) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 436 } while(0) 437 #define PF_OSFP_PACK(osfp, class, version, subtype) do { \ 438 (osfp) = ((class) & ((1 << _FP_CLASS_BITS) - 1)) << (_FP_VERSION_BITS \ 439 + _FP_SUBTYPE_BITS); \ 440 (osfp) |= ((version) & ((1 << _FP_VERSION_BITS) - 1)) << \ 441 _FP_SUBTYPE_BITS; \ 442 (osfp) |= (subtype) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 443 } while(0) 444 445 /* the fingerprint of an OSes TCP SYN packet */ 446 typedef u_int64_t pf_tcpopts_t; 447 struct pf_os_fingerprint { 448 SLIST_HEAD(pf_osfp_enlist, pf_osfp_entry) fp_oses; /* list of matches */ 449 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 450 u_int16_t fp_wsize; /* TCP window size */ 451 u_int16_t fp_psize; /* ip->ip_len */ 452 u_int16_t fp_mss; /* TCP MSS */ 453 u_int16_t fp_flags; 454 #define PF_OSFP_WSIZE_MOD 0x0001 /* Window modulus */ 455 #define PF_OSFP_WSIZE_DC 0x0002 /* Window don't care */ 456 #define PF_OSFP_WSIZE_MSS 0x0004 /* Window multiple of MSS */ 457 #define PF_OSFP_WSIZE_MTU 0x0008 /* Window multiple of MTU */ 458 #define PF_OSFP_PSIZE_MOD 0x0010 /* packet size modulus */ 459 #define PF_OSFP_PSIZE_DC 0x0020 /* packet size don't care */ 460 #define PF_OSFP_WSCALE 0x0040 /* TCP window scaling */ 461 #define PF_OSFP_WSCALE_MOD 0x0080 /* TCP window scale modulus */ 462 #define PF_OSFP_WSCALE_DC 0x0100 /* TCP window scale dont-care */ 463 #define PF_OSFP_MSS 0x0200 /* TCP MSS */ 464 #define PF_OSFP_MSS_MOD 0x0400 /* TCP MSS modulus */ 465 #define PF_OSFP_MSS_DC 0x0800 /* TCP MSS dont-care */ 466 #define PF_OSFP_DF 0x1000 /* IPv4 don't fragment bit */ 467 #define PF_OSFP_TS0 0x2000 /* Zero timestamp */ 468 u_int8_t fp_optcnt; /* TCP option count */ 469 u_int8_t fp_wscale; /* TCP window scaling */ 470 u_int8_t fp_ttl; /* IPv4 TTL */ 471 #define PF_OSFP_MAXTTL_OFFSET 40 472 /* TCP options packing */ 473 #define PF_OSFP_TCPOPT_NOP 0x0 /* TCP NOP option */ 474 #define PF_OSFP_TCPOPT_WSCALE 0x1 /* TCP window scaling option */ 475 #define PF_OSFP_TCPOPT_MSS 0x2 /* TCP max segment size opt */ 476 #define PF_OSFP_TCPOPT_SACK 0x3 /* TCP SACK OK option */ 477 #define PF_OSFP_TCPOPT_TS 0x4 /* TCP timestamp option */ 478 #define PF_OSFP_TCPOPT_BITS 3 /* bits used by each option */ 479 #define PF_OSFP_MAX_OPTS \ 480 (sizeof(((struct pf_os_fingerprint *)0)->fp_tcpopts) * 8) \ 481 / PF_OSFP_TCPOPT_BITS 482 483 SLIST_ENTRY(pf_os_fingerprint) fp_next; 484 }; 485 486 struct pf_osfp_ioctl { 487 struct pf_osfp_entry fp_os; 488 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 489 u_int16_t fp_wsize; /* TCP window size */ 490 u_int16_t fp_psize; /* ip->ip_len */ 491 u_int16_t fp_mss; /* TCP MSS */ 492 u_int16_t fp_flags; 493 u_int8_t fp_optcnt; /* TCP option count */ 494 u_int8_t fp_wscale; /* TCP window scaling */ 495 u_int8_t fp_ttl; /* IPv4 TTL */ 496 497 int fp_getnum; /* DIOCOSFPGET number */ 498 }; 499 500 501 union pf_rule_ptr { 502 struct pf_rule *ptr; 503 u_int32_t nr; 504 }; 505 506 struct pf_rule { 507 struct pf_rule_addr src; 508 struct pf_rule_addr dst; 509 #define PF_SKIP_IFP 0 510 #define PF_SKIP_DIR 1 511 #define PF_SKIP_AF 2 512 #define PF_SKIP_PROTO 3 513 #define PF_SKIP_SRC_ADDR 4 514 #define PF_SKIP_SRC_PORT 5 515 #define PF_SKIP_DST_ADDR 6 516 #define PF_SKIP_DST_PORT 7 517 #define PF_SKIP_COUNT 8 518 union pf_rule_ptr skip[PF_SKIP_COUNT]; 519 #define PF_RULE_LABEL_SIZE 64 520 char label[PF_RULE_LABEL_SIZE]; 521 #define PF_QNAME_SIZE 16 522 char ifname[IFNAMSIZ]; 523 char qname[PF_QNAME_SIZE]; 524 char pqname[PF_QNAME_SIZE]; 525 #define PF_ANCHOR_NAME_SIZE 16 526 char anchorname[PF_ANCHOR_NAME_SIZE]; 527 #define PF_TAG_NAME_SIZE 16 528 char tagname[PF_TAG_NAME_SIZE]; 529 char match_tagname[PF_TAG_NAME_SIZE]; 530 531 TAILQ_ENTRY(pf_rule) entries; 532 struct pf_pool rpool; 533 534 u_int64_t evaluations; 535 u_int64_t packets; 536 u_int64_t bytes; 537 538 struct pfi_kif *kif; 539 struct pf_anchor *anchor; 540 541 pf_osfp_t os_fingerprint; 542 543 u_int32_t timeout[PFTM_MAX]; 544 u_int32_t states; 545 u_int32_t max_states; 546 u_int32_t src_nodes; 547 u_int32_t max_src_nodes; 548 u_int32_t max_src_states; 549 u_int32_t qid; 550 u_int32_t pqid; 551 u_int32_t rt_listid; 552 u_int32_t nr; 553 554 u_int16_t return_icmp; 555 u_int16_t return_icmp6; 556 u_int16_t max_mss; 557 u_int16_t tag; 558 u_int16_t match_tag; 559 560 struct pf_rule_uid uid; 561 struct pf_rule_gid gid; 562 563 u_int32_t rule_flag; 564 u_int8_t action; 565 u_int8_t direction; 566 u_int8_t log; 567 u_int8_t quick; 568 u_int8_t ifnot; 569 u_int8_t match_tag_not; 570 u_int8_t natpass; 571 572 #define PF_STATE_NORMAL 0x1 573 #define PF_STATE_MODULATE 0x2 574 #define PF_STATE_SYNPROXY 0x3 575 u_int8_t keep_state; 576 sa_family_t af; 577 u_int8_t proto; 578 u_int8_t type; 579 u_int8_t code; 580 u_int8_t flags; 581 u_int8_t flagset; 582 u_int8_t min_ttl; 583 u_int8_t allow_opts; 584 u_int8_t rt; 585 u_int8_t return_ttl; 586 u_int8_t tos; 587 }; 588 589 /* rule flags */ 590 #define PFRULE_DROP 0x0000 591 #define PFRULE_RETURNRST 0x0001 592 #define PFRULE_FRAGMENT 0x0002 593 #define PFRULE_RETURNICMP 0x0004 594 #define PFRULE_RETURN 0x0008 595 #define PFRULE_NOSYNC 0x0010 596 #define PFRULE_SRCTRACK 0x0020 /* track source states */ 597 #define PFRULE_RULESRCTRACK 0x0040 /* per rule */ 598 599 /* scrub flags */ 600 #define PFRULE_NODF 0x0100 601 #define PFRULE_FRAGCROP 0x0200 /* non-buffering frag cache */ 602 #define PFRULE_FRAGDROP 0x0400 /* drop funny fragments */ 603 #define PFRULE_RANDOMID 0x0800 604 #define PFRULE_REASSEMBLE_TCP 0x1000 605 606 /* rule flags again */ 607 #define PFRULE_IFBOUND 0x00010000 /* if-bound */ 608 #define PFRULE_GRBOUND 0x00020000 /* group-bound */ 609 610 #define PFSTATE_HIWAT 10000 /* default state table size */ 611 612 struct pf_src_node { 613 RB_ENTRY(pf_src_node) entry; 614 struct pf_addr addr; 615 struct pf_addr raddr; 616 union pf_rule_ptr rule; 617 struct pfi_kif *kif; 618 u_int32_t bytes; 619 u_int32_t packets; 620 u_int32_t states; 621 u_int32_t creation; 622 u_int32_t expire; 623 sa_family_t af; 624 u_int8_t ruletype; 625 }; 626 627 #define PFSNODE_HIWAT 10000 /* default source node table size */ 628 629 struct pf_state_scrub { 630 u_int16_t pfss_flags; 631 #define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */ 632 u_int8_t pfss_ttl; /* stashed TTL */ 633 u_int8_t pad; 634 u_int32_t pfss_ts_mod; /* timestamp modulation */ 635 }; 636 637 struct pf_state_host { 638 struct pf_addr addr; 639 u_int16_t port; 640 u_int16_t pad; 641 }; 642 643 struct pf_state_peer { 644 u_int32_t seqlo; /* Max sequence number sent */ 645 u_int32_t seqhi; /* Max the other end ACKd + win */ 646 u_int32_t seqdiff; /* Sequence number modulator */ 647 u_int16_t max_win; /* largest window (pre scaling) */ 648 u_int8_t state; /* active state level */ 649 u_int8_t wscale; /* window scaling factor */ 650 u_int16_t mss; /* Maximum segment size option */ 651 struct pf_state_scrub *scrub; /* state is scrubbed */ 652 }; 653 654 TAILQ_HEAD(pf_state_queue, pf_state); 655 656 struct pf_state { 657 u_int64_t id; 658 union { 659 struct { 660 RB_ENTRY(pf_state) entry_lan_ext; 661 RB_ENTRY(pf_state) entry_ext_gwy; 662 RB_ENTRY(pf_state) entry_id; 663 TAILQ_ENTRY(pf_state) entry_updates; 664 struct pfi_kif *kif; 665 } s; 666 char ifname[IFNAMSIZ]; 667 } u; 668 struct pf_state_host lan; 669 struct pf_state_host gwy; 670 struct pf_state_host ext; 671 struct pf_state_peer src; 672 struct pf_state_peer dst; 673 union pf_rule_ptr rule; 674 union pf_rule_ptr anchor; 675 union pf_rule_ptr nat_rule; 676 struct pf_addr rt_addr; 677 struct pfi_kif *rt_kif; 678 struct pf_src_node *src_node; 679 struct pf_src_node *nat_src_node; 680 u_int32_t creation; 681 u_int32_t expire; 682 u_int32_t pfsync_time; 683 u_int32_t packets[2]; 684 u_int32_t bytes[2]; 685 u_int32_t creatorid; 686 sa_family_t af; 687 u_int8_t proto; 688 u_int8_t direction; 689 u_int8_t log; 690 u_int8_t allow_opts; 691 u_int8_t timeout; 692 u_int8_t sync_flags; 693 #define PFSTATE_NOSYNC 0x01 694 #define PFSTATE_FROMSYNC 0x02 695 u_int8_t pad; 696 }; 697 698 TAILQ_HEAD(pf_rulequeue, pf_rule); 699 700 struct pf_anchor; 701 702 struct pf_ruleset { 703 TAILQ_ENTRY(pf_ruleset) entries; 704 #define PF_RULESET_NAME_SIZE 16 705 char name[PF_RULESET_NAME_SIZE]; 706 struct { 707 struct pf_rulequeue queues[2]; 708 struct { 709 struct pf_rulequeue *ptr; 710 u_int32_t ticket; 711 int open; 712 } active, inactive; 713 } rules[PF_RULESET_MAX]; 714 struct pf_anchor *anchor; 715 u_int32_t tticket; 716 int tables; 717 int topen; 718 }; 719 720 TAILQ_HEAD(pf_rulesetqueue, pf_ruleset); 721 722 struct pf_anchor { 723 TAILQ_ENTRY(pf_anchor) entries; 724 char name[PF_ANCHOR_NAME_SIZE]; 725 struct pf_rulesetqueue rulesets; 726 int tables; 727 }; 728 729 TAILQ_HEAD(pf_anchorqueue, pf_anchor); 730 731 #define PF_RESERVED_ANCHOR "_pf" 732 #define PF_INTERFACE_RULESET "_if" 733 734 #define PFR_TFLAG_PERSIST 0x00000001 735 #define PFR_TFLAG_CONST 0x00000002 736 #define PFR_TFLAG_ACTIVE 0x00000004 737 #define PFR_TFLAG_INACTIVE 0x00000008 738 #define PFR_TFLAG_REFERENCED 0x00000010 739 #define PFR_TFLAG_REFDANCHOR 0x00000020 740 #define PFR_TFLAG_USRMASK 0x00000003 741 #define PFR_TFLAG_SETMASK 0x0000003C 742 #define PFR_TFLAG_ALLMASK 0x0000003F 743 744 struct pfr_table { 745 char pfrt_anchor[PF_ANCHOR_NAME_SIZE]; 746 char pfrt_ruleset[PF_RULESET_NAME_SIZE]; 747 char pfrt_name[PF_TABLE_NAME_SIZE]; 748 u_int32_t pfrt_flags; 749 u_int8_t pfrt_fback; 750 }; 751 752 enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED, 753 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE, 754 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_MAX }; 755 756 struct pfr_addr { 757 union { 758 struct in_addr _pfra_ip4addr; 759 struct in6_addr _pfra_ip6addr; 760 } pfra_u; 761 u_int8_t pfra_af; 762 u_int8_t pfra_net; 763 u_int8_t pfra_not; 764 u_int8_t pfra_fback; 765 }; 766 #define pfra_ip4addr pfra_u._pfra_ip4addr 767 #define pfra_ip6addr pfra_u._pfra_ip6addr 768 769 enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX }; 770 enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX }; 771 #define PFR_OP_XPASS PFR_OP_ADDR_MAX 772 773 struct pfr_astats { 774 struct pfr_addr pfras_a; 775 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 776 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 777 long pfras_tzero; 778 }; 779 780 enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX }; 781 782 struct pfr_tstats { 783 struct pfr_table pfrts_t; 784 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 785 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 786 u_int64_t pfrts_match; 787 u_int64_t pfrts_nomatch; 788 long pfrts_tzero; 789 int pfrts_cnt; 790 int pfrts_refcnt[PFR_REFCNT_MAX]; 791 }; 792 #define pfrts_name pfrts_t.pfrt_name 793 #define pfrts_flags pfrts_t.pfrt_flags 794 795 SLIST_HEAD(pfr_kentryworkq, pfr_kentry); 796 struct pfr_kentry { 797 struct radix_node pfrke_node[2]; 798 union sockaddr_union pfrke_sa; 799 u_int64_t pfrke_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 800 u_int64_t pfrke_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 801 SLIST_ENTRY(pfr_kentry) pfrke_workq; 802 long pfrke_tzero; 803 u_int8_t pfrke_af; 804 u_int8_t pfrke_net; 805 u_int8_t pfrke_not; 806 u_int8_t pfrke_mark; 807 }; 808 809 SLIST_HEAD(pfr_ktableworkq, pfr_ktable); 810 RB_HEAD(pfr_ktablehead, pfr_ktable); 811 struct pfr_ktable { 812 struct pfr_tstats pfrkt_ts; 813 RB_ENTRY(pfr_ktable) pfrkt_tree; 814 SLIST_ENTRY(pfr_ktable) pfrkt_workq; 815 struct radix_node_head *pfrkt_ip4; 816 struct radix_node_head *pfrkt_ip6; 817 struct pfr_ktable *pfrkt_shadow; 818 struct pfr_ktable *pfrkt_root; 819 struct pf_ruleset *pfrkt_rs; 820 long pfrkt_larg; 821 int pfrkt_nflags; 822 }; 823 #define pfrkt_t pfrkt_ts.pfrts_t 824 #define pfrkt_name pfrkt_t.pfrt_name 825 #define pfrkt_anchor pfrkt_t.pfrt_anchor 826 #define pfrkt_ruleset pfrkt_t.pfrt_ruleset 827 #define pfrkt_flags pfrkt_t.pfrt_flags 828 #define pfrkt_cnt pfrkt_ts.pfrts_cnt 829 #define pfrkt_refcnt pfrkt_ts.pfrts_refcnt 830 #define pfrkt_packets pfrkt_ts.pfrts_packets 831 #define pfrkt_bytes pfrkt_ts.pfrts_bytes 832 #define pfrkt_match pfrkt_ts.pfrts_match 833 #define pfrkt_nomatch pfrkt_ts.pfrts_nomatch 834 #define pfrkt_tzero pfrkt_ts.pfrts_tzero 835 836 RB_HEAD(pf_state_tree_lan_ext, pf_state); 837 RB_PROTOTYPE(pf_state_tree_lan_ext, pf_state, 838 u.s.entry_lan_ext, pf_state_compare_lan_ext); 839 840 RB_HEAD(pf_state_tree_ext_gwy, pf_state); 841 RB_PROTOTYPE(pf_state_tree_ext_gwy, pf_state, 842 u.s.entry_ext_gwy, pf_state_compare_ext_gwy); 843 844 struct pfi_if { 845 char pfif_name[IFNAMSIZ]; 846 u_int64_t pfif_packets[2][2][2]; 847 u_int64_t pfif_bytes[2][2][2]; 848 u_int64_t pfif_addcnt; 849 u_int64_t pfif_delcnt; 850 long pfif_tzero; 851 int pfif_states; 852 int pfif_rules; 853 int pfif_flags; 854 }; 855 856 TAILQ_HEAD(pfi_grouphead, pfi_kif); 857 TAILQ_HEAD(pfi_statehead, pfi_kif); 858 RB_HEAD(pfi_ifhead, pfi_kif); 859 struct pfi_kif { 860 struct pfi_if pfik_if; 861 RB_ENTRY(pfi_kif) pfik_tree; 862 struct pf_state_tree_lan_ext pfik_lan_ext; 863 struct pf_state_tree_ext_gwy pfik_ext_gwy; 864 struct pfi_grouphead pfik_grouphead; 865 TAILQ_ENTRY(pfi_kif) pfik_instances; 866 TAILQ_ENTRY(pfi_kif) pfik_w_states; 867 struct hook_desc_head *pfik_ah_head; 868 void *pfik_ah_cookie; 869 struct pfi_kif *pfik_parent; 870 struct ifnet *pfik_ifp; 871 int pfik_states; 872 int pfik_rules; 873 }; 874 #define pfik_name pfik_if.pfif_name 875 #define pfik_packets pfik_if.pfif_packets 876 #define pfik_bytes pfik_if.pfif_bytes 877 #define pfik_tzero pfik_if.pfif_tzero 878 #define pfik_flags pfik_if.pfif_flags 879 #define pfik_addcnt pfik_if.pfif_addcnt 880 #define pfik_delcnt pfik_if.pfif_delcnt 881 #define pfik_states pfik_if.pfif_states 882 #define pfik_rules pfik_if.pfif_rules 883 884 #define PFI_IFLAG_GROUP 0x0001 /* group of interfaces */ 885 #define PFI_IFLAG_INSTANCE 0x0002 /* single instance */ 886 #define PFI_IFLAG_CLONABLE 0x0010 /* clonable group */ 887 #define PFI_IFLAG_DYNAMIC 0x0020 /* dynamic group */ 888 #define PFI_IFLAG_ATTACHED 0x0040 /* interface attached */ 889 #define PFI_IFLAG_PLACEHOLDER 0x8000 /* placeholder group/interface */ 890 891 struct pf_pdesc { 892 u_int64_t tot_len; /* Make Mickey money */ 893 union { 894 struct tcphdr *tcp; 895 struct udphdr *udp; 896 struct icmp *icmp; 897 #ifdef INET6 898 struct icmp6_hdr *icmp6; 899 #endif /* INET6 */ 900 void *any; 901 } hdr; 902 struct pf_addr baddr; /* address before translation */ 903 struct pf_addr naddr; /* address after translation */ 904 struct pf_rule *nat_rule; /* nat/rdr rule applied to packet */ 905 struct pf_addr *src; 906 struct pf_addr *dst; 907 u_int16_t *ip_sum; 908 u_int32_t p_len; /* total length of payload */ 909 u_int16_t flags; /* Let SCRUB trigger behavior in 910 * state code. Easier than tags */ 911 #define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */ 912 sa_family_t af; 913 u_int8_t proto; 914 u_int8_t tos; 915 }; 916 917 /* flags for RDR options */ 918 #define PF_DPORT_RANGE 0x01 /* Dest port uses range */ 919 #define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */ 920 921 /* Reasons code for passing/dropping a packet */ 922 #define PFRES_MATCH 0 /* Explicit match of a rule */ 923 #define PFRES_BADOFF 1 /* Bad offset for pull_hdr */ 924 #define PFRES_FRAG 2 /* Dropping following fragment */ 925 #define PFRES_SHORT 3 /* Dropping short packet */ 926 #define PFRES_NORM 4 /* Dropping by normalizer */ 927 #define PFRES_MEMORY 5 /* Dropped due to lacking mem */ 928 #define PFRES_MAX 6 /* total+1 */ 929 930 #define PFRES_NAMES { \ 931 "match", \ 932 "bad-offset", \ 933 "fragment", \ 934 "short", \ 935 "normalize", \ 936 "memory", \ 937 NULL \ 938 } 939 940 /* UDP state enumeration */ 941 #define PFUDPS_NO_TRAFFIC 0 942 #define PFUDPS_SINGLE 1 943 #define PFUDPS_MULTIPLE 2 944 945 #define PFUDPS_NSTATES 3 /* number of state levels */ 946 947 #define PFUDPS_NAMES { \ 948 "NO_TRAFFIC", \ 949 "SINGLE", \ 950 "MULTIPLE", \ 951 NULL \ 952 } 953 954 /* Other protocol state enumeration */ 955 #define PFOTHERS_NO_TRAFFIC 0 956 #define PFOTHERS_SINGLE 1 957 #define PFOTHERS_MULTIPLE 2 958 959 #define PFOTHERS_NSTATES 3 /* number of state levels */ 960 961 #define PFOTHERS_NAMES { \ 962 "NO_TRAFFIC", \ 963 "SINGLE", \ 964 "MULTIPLE", \ 965 NULL \ 966 } 967 968 #define FCNT_STATE_SEARCH 0 969 #define FCNT_STATE_INSERT 1 970 #define FCNT_STATE_REMOVALS 2 971 #define FCNT_MAX 3 972 973 #define SCNT_SRC_NODE_SEARCH 0 974 #define SCNT_SRC_NODE_INSERT 1 975 #define SCNT_SRC_NODE_REMOVALS 2 976 #define SCNT_MAX 3 977 978 #define ACTION_SET(a, x) \ 979 do { \ 980 if ((a) != NULL) \ 981 *(a) = (x); \ 982 } while (0) 983 984 #define REASON_SET(a, x) \ 985 do { \ 986 if ((a) != NULL) \ 987 *(a) = (x); \ 988 if (x < PFRES_MAX) \ 989 pf_status.counters[x]++; \ 990 } while (0) 991 992 struct pf_status { 993 u_int64_t counters[PFRES_MAX]; 994 u_int64_t fcounters[FCNT_MAX]; 995 u_int64_t scounters[SCNT_MAX]; 996 u_int64_t pcounters[2][2][3]; 997 u_int64_t bcounters[2][2]; 998 u_int64_t stateid; 999 u_int32_t running; 1000 u_int32_t states; 1001 u_int32_t src_nodes; 1002 u_int32_t since; 1003 u_int32_t debug; 1004 u_int32_t hostid; 1005 char ifname[IFNAMSIZ]; 1006 }; 1007 1008 struct cbq_opts { 1009 u_int minburst; 1010 u_int maxburst; 1011 u_int pktsize; 1012 u_int maxpktsize; 1013 u_int ns_per_byte; 1014 u_int maxidle; 1015 int minidle; 1016 u_int offtime; 1017 int flags; 1018 }; 1019 1020 struct priq_opts { 1021 int flags; 1022 }; 1023 1024 struct hfsc_opts { 1025 /* real-time service curve */ 1026 u_int rtsc_m1; /* slope of the 1st segment in bps */ 1027 u_int rtsc_d; /* the x-projection of m1 in msec */ 1028 u_int rtsc_m2; /* slope of the 2nd segment in bps */ 1029 /* link-sharing service curve */ 1030 u_int lssc_m1; 1031 u_int lssc_d; 1032 u_int lssc_m2; 1033 /* upper-limit service curve */ 1034 u_int ulsc_m1; 1035 u_int ulsc_d; 1036 u_int ulsc_m2; 1037 int flags; 1038 }; 1039 1040 struct pf_altq { 1041 char ifname[IFNAMSIZ]; 1042 1043 void *altq_disc; /* discipline-specific state */ 1044 TAILQ_ENTRY(pf_altq) entries; 1045 1046 /* scheduler spec */ 1047 u_int8_t scheduler; /* scheduler type */ 1048 u_int16_t tbrsize; /* tokenbucket regulator size */ 1049 u_int32_t ifbandwidth; /* interface bandwidth */ 1050 1051 /* queue spec */ 1052 char qname[PF_QNAME_SIZE]; /* queue name */ 1053 char parent[PF_QNAME_SIZE]; /* parent name */ 1054 u_int32_t parent_qid; /* parent queue id */ 1055 u_int32_t bandwidth; /* queue bandwidth */ 1056 u_int8_t priority; /* priority */ 1057 u_int16_t qlimit; /* queue size limit */ 1058 u_int16_t flags; /* misc flags */ 1059 union { 1060 struct cbq_opts cbq_opts; 1061 struct priq_opts priq_opts; 1062 struct hfsc_opts hfsc_opts; 1063 } pq_u; 1064 1065 u_int32_t qid; /* return value */ 1066 }; 1067 1068 struct pf_tagname { 1069 TAILQ_ENTRY(pf_tagname) entries; 1070 char name[PF_TAG_NAME_SIZE]; 1071 u_int16_t tag; 1072 int ref; 1073 }; 1074 1075 #define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */ 1076 #define PFFRAG_FRAG_HIWAT 1000 /* Number of fragmented packets */ 1077 #define PFFRAG_FRCENT_HIWAT 50000 /* Number of fragment cache entries */ 1078 #define PFFRAG_FRCACHE_HIWAT 10000 /* Number of fragment descriptors */ 1079 1080 /* 1081 * ioctl parameter structures 1082 */ 1083 1084 struct pfioc_pooladdr { 1085 u_int32_t action; 1086 u_int32_t ticket; 1087 u_int32_t nr; 1088 u_int32_t r_num; 1089 u_int8_t r_action; 1090 u_int8_t r_last; 1091 u_int8_t af; 1092 char anchor[PF_ANCHOR_NAME_SIZE]; 1093 char ruleset[PF_RULESET_NAME_SIZE]; 1094 struct pf_pooladdr addr; 1095 }; 1096 1097 struct pfioc_rule { 1098 u_int32_t action; 1099 u_int32_t ticket; 1100 u_int32_t pool_ticket; 1101 u_int32_t nr; 1102 char anchor[PF_ANCHOR_NAME_SIZE]; 1103 char ruleset[PF_RULESET_NAME_SIZE]; 1104 struct pf_rule rule; 1105 }; 1106 1107 struct pfioc_natlook { 1108 struct pf_addr saddr; 1109 struct pf_addr daddr; 1110 struct pf_addr rsaddr; 1111 struct pf_addr rdaddr; 1112 u_int16_t sport; 1113 u_int16_t dport; 1114 u_int16_t rsport; 1115 u_int16_t rdport; 1116 sa_family_t af; 1117 u_int8_t proto; 1118 u_int8_t direction; 1119 }; 1120 1121 struct pfioc_state { 1122 u_int32_t nr; 1123 struct pf_state state; 1124 }; 1125 1126 struct pfioc_state_kill { 1127 /* XXX returns the number of states killed in psk_af */ 1128 sa_family_t psk_af; 1129 int psk_proto; 1130 struct pf_rule_addr psk_src; 1131 struct pf_rule_addr psk_dst; 1132 char psk_ifname[IFNAMSIZ]; 1133 }; 1134 1135 struct pfioc_states { 1136 int ps_len; 1137 union { 1138 caddr_t psu_buf; 1139 struct pf_state *psu_states; 1140 } ps_u; 1141 #define ps_buf ps_u.psu_buf 1142 #define ps_states ps_u.psu_states 1143 }; 1144 1145 struct pfioc_src_nodes { 1146 int psn_len; 1147 union { 1148 caddr_t psu_buf; 1149 struct pf_src_node *psu_src_nodes; 1150 } psn_u; 1151 #define psn_buf psn_u.psu_buf 1152 #define psn_src_nodes psn_u.psu_src_nodes 1153 }; 1154 1155 struct pfioc_if { 1156 char ifname[IFNAMSIZ]; 1157 }; 1158 1159 struct pfioc_tm { 1160 int timeout; 1161 int seconds; 1162 }; 1163 1164 struct pfioc_limit { 1165 int index; 1166 unsigned limit; 1167 }; 1168 1169 struct pfioc_altq { 1170 u_int32_t action; 1171 u_int32_t ticket; 1172 u_int32_t nr; 1173 struct pf_altq altq; 1174 }; 1175 1176 struct pfioc_qstats { 1177 u_int32_t ticket; 1178 u_int32_t nr; 1179 void *buf; 1180 int nbytes; 1181 u_int8_t scheduler; 1182 }; 1183 1184 struct pfioc_anchor { 1185 u_int32_t nr; 1186 char name[PF_ANCHOR_NAME_SIZE]; 1187 }; 1188 1189 struct pfioc_ruleset { 1190 u_int32_t nr; 1191 char anchor[PF_ANCHOR_NAME_SIZE]; 1192 char name[PF_RULESET_NAME_SIZE]; 1193 }; 1194 1195 #define PF_RULESET_ALTQ (PF_RULESET_MAX) 1196 #define PF_RULESET_TABLE (PF_RULESET_MAX+1) 1197 struct pfioc_trans { 1198 int size; /* number of elements */ 1199 int esize; /* size of each element in bytes */ 1200 struct pfioc_trans_e { 1201 int rs_num; 1202 char anchor[PF_ANCHOR_NAME_SIZE]; 1203 char ruleset[PF_RULESET_NAME_SIZE]; 1204 u_int32_t ticket; 1205 } *array; 1206 }; 1207 1208 #define PFR_FLAG_ATOMIC 0x00000001 1209 #define PFR_FLAG_DUMMY 0x00000002 1210 #define PFR_FLAG_FEEDBACK 0x00000004 1211 #define PFR_FLAG_CLSTATS 0x00000008 1212 #define PFR_FLAG_ADDRSTOO 0x00000010 1213 #define PFR_FLAG_REPLACE 0x00000020 1214 #define PFR_FLAG_ALLRSETS 0x00000040 1215 #define PFR_FLAG_ALLMASK 0x0000007F 1216 #ifdef _KERNEL 1217 #define PFR_FLAG_USERIOCTL 0x10000000 1218 #endif 1219 1220 struct pfioc_table { 1221 struct pfr_table pfrio_table; 1222 void *pfrio_buffer; 1223 int pfrio_esize; 1224 int pfrio_size; 1225 int pfrio_size2; 1226 int pfrio_nadd; 1227 int pfrio_ndel; 1228 int pfrio_nchange; 1229 int pfrio_flags; 1230 u_int32_t pfrio_ticket; 1231 }; 1232 #define pfrio_exists pfrio_nadd 1233 #define pfrio_nzero pfrio_nadd 1234 #define pfrio_nmatch pfrio_nadd 1235 #define pfrio_naddr pfrio_size2 1236 #define pfrio_setflag pfrio_size2 1237 #define pfrio_clrflag pfrio_nadd 1238 1239 1240 #define PFI_FLAG_GROUP 0x0001 /* gets groups of interfaces */ 1241 #define PFI_FLAG_INSTANCE 0x0002 /* gets single interfaces */ 1242 #define PFI_FLAG_ALLMASK 0x0003 1243 1244 struct pfioc_iface { 1245 char pfiio_name[IFNAMSIZ]; 1246 void *pfiio_buffer; 1247 int pfiio_esize; 1248 int pfiio_size; 1249 int pfiio_nzero; 1250 int pfiio_flags; 1251 }; 1252 1253 1254 /* 1255 * ioctl operations 1256 */ 1257 1258 #define DIOCSTART _IO ('D', 1) 1259 #define DIOCSTOP _IO ('D', 2) 1260 #define DIOCBEGINRULES _IOWR('D', 3, struct pfioc_rule) 1261 #define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule) 1262 #define DIOCCOMMITRULES _IOWR('D', 5, struct pfioc_rule) 1263 #define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule) 1264 #define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule) 1265 /* XXX cut 8 - 17 */ 1266 #define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill) 1267 #define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state) 1268 #define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if) 1269 #define DIOCGETSTATUS _IOWR('D', 21, struct pf_status) 1270 #define DIOCCLRSTATUS _IO ('D', 22) 1271 #define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook) 1272 #define DIOCSETDEBUG _IOWR('D', 24, u_int32_t) 1273 #define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states) 1274 #define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule) 1275 /* XXX cut 26 - 28 */ 1276 #define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm) 1277 #define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm) 1278 #define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state) 1279 #define DIOCCLRRULECTRS _IO ('D', 38) 1280 #define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit) 1281 #define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit) 1282 #define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill) 1283 #define DIOCSTARTALTQ _IO ('D', 42) 1284 #define DIOCSTOPALTQ _IO ('D', 43) 1285 #define DIOCBEGINALTQS _IOWR('D', 44, u_int32_t) 1286 #define DIOCADDALTQ _IOWR('D', 45, struct pfioc_altq) 1287 #define DIOCCOMMITALTQS _IOWR('D', 46, u_int32_t) 1288 #define DIOCGETALTQS _IOWR('D', 47, struct pfioc_altq) 1289 #define DIOCGETALTQ _IOWR('D', 48, struct pfioc_altq) 1290 #define DIOCCHANGEALTQ _IOWR('D', 49, struct pfioc_altq) 1291 #define DIOCGETQSTATS _IOWR('D', 50, struct pfioc_qstats) 1292 #define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr) 1293 #define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr) 1294 #define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr) 1295 #define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr) 1296 #define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr) 1297 #define DIOCGETANCHORS _IOWR('D', 56, struct pfioc_anchor) 1298 #define DIOCGETANCHOR _IOWR('D', 57, struct pfioc_anchor) 1299 #define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset) 1300 #define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset) 1301 #define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table) 1302 #define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table) 1303 #define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table) 1304 #define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table) 1305 #define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table) 1306 #define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table) 1307 #define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table) 1308 #define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table) 1309 #define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table) 1310 #define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table) 1311 #define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table) 1312 #define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table) 1313 #define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table) 1314 #define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table) 1315 #define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table) 1316 #define DIOCRINABEGIN _IOWR('D', 75, struct pfioc_table) 1317 #define DIOCRINACOMMIT _IOWR('D', 76, struct pfioc_table) 1318 #define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table) 1319 #define DIOCOSFPFLUSH _IO('D', 78) 1320 #define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl) 1321 #define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl) 1322 #define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans) 1323 #define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans) 1324 #define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans) 1325 #define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes) 1326 #define DIOCCLRSRCNODES _IO('D', 85) 1327 #define DIOCSETHOSTID _IOWR('D', 86, u_int32_t) 1328 #define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface) 1329 #define DIOCICLRISTATS _IOWR('D', 88, struct pfioc_iface) 1330 struct pf_ifspeed { 1331 char ifname[IFNAMSIZ]; 1332 u_int32_t baudrate; 1333 }; 1334 #define DIOCGIFSPEED _IOWR('D', 89, struct pf_ifspeed) 1335 1336 #ifdef _KERNEL 1337 RB_HEAD(pf_src_tree, pf_src_node); 1338 RB_PROTOTYPE(pf_src_tree, pf_src_node, entry, pf_src_compare); 1339 extern struct pf_src_tree tree_src_tracking; 1340 1341 RB_HEAD(pf_state_tree_id, pf_state); 1342 RB_PROTOTYPE(pf_state_tree_id, pf_state, 1343 entry_id, pf_state_compare_id); 1344 extern struct pf_state_tree_id tree_id; 1345 extern struct pf_state_queue state_updates; 1346 1347 extern struct pf_anchorqueue pf_anchors; 1348 extern struct pf_ruleset pf_main_ruleset; 1349 TAILQ_HEAD(pf_poolqueue, pf_pool); 1350 extern struct pf_poolqueue pf_pools[2]; 1351 TAILQ_HEAD(pf_altqqueue, pf_altq); 1352 extern struct pf_altqqueue pf_altqs[2]; 1353 extern struct pf_palist pf_pabuf; 1354 extern struct pfi_kif **pfi_index2kif; 1355 1356 extern u_int32_t ticket_altqs_active; 1357 extern u_int32_t ticket_altqs_inactive; 1358 extern int altqs_inactive_open; 1359 extern u_int32_t ticket_pabuf; 1360 extern struct pf_altqqueue *pf_altqs_active; 1361 extern struct pf_altqqueue *pf_altqs_inactive; 1362 extern struct pf_poolqueue *pf_pools_active; 1363 extern struct pf_poolqueue *pf_pools_inactive; 1364 extern int pf_tbladdr_setup(struct pf_ruleset *, 1365 struct pf_addr_wrap *); 1366 extern void pf_tbladdr_remove(struct pf_addr_wrap *); 1367 extern void pf_tbladdr_copyout(struct pf_addr_wrap *); 1368 extern void pf_calc_skip_steps(struct pf_rulequeue *); 1369 extern void pf_update_anchor_rules(void); 1370 extern vm_zone_t pf_src_tree_pl, pf_rule_pl; 1371 extern vm_zone_t pf_state_pl, pf_altq_pl, pf_pooladdr_pl; 1372 extern vm_zone_t pfr_ktable_pl, pfr_kentry_pl; 1373 extern vm_zone_t pf_cache_pl, pf_cent_pl; 1374 extern vm_zone_t pf_state_scrub_pl; 1375 extern vm_zone_t pfi_addr_pl; 1376 extern void pf_purge_timeout(void *); 1377 extern void pf_purge_expired_src_nodes(void); 1378 extern void pf_purge_expired_states(void); 1379 extern int pf_insert_state(struct pfi_kif *, 1380 struct pf_state *); 1381 extern int pf_insert_src_node(struct pf_src_node **, 1382 struct pf_rule *, struct pf_addr *, 1383 sa_family_t); 1384 void pf_src_tree_remove_state(struct pf_state *); 1385 extern struct pf_state *pf_find_state_byid(struct pf_state *); 1386 extern struct pf_state *pf_find_state_all(struct pf_state *key, 1387 u_int8_t tree, int *more); 1388 extern struct pf_anchor *pf_find_anchor(const char *); 1389 extern struct pf_ruleset *pf_find_ruleset(char *, char *); 1390 extern struct pf_ruleset *pf_find_or_create_ruleset( 1391 char[PF_ANCHOR_NAME_SIZE], 1392 char[PF_RULESET_NAME_SIZE]); 1393 extern void pf_remove_if_empty_ruleset( 1394 struct pf_ruleset *); 1395 1396 extern struct ifnet *sync_ifp; 1397 extern struct pf_rule pf_default_rule; 1398 extern void pf_addrcpy(struct pf_addr *, struct pf_addr *, 1399 u_int8_t); 1400 void pf_rm_rule(struct pf_rulequeue *, 1401 struct pf_rule *); 1402 1403 #ifdef INET 1404 int pf_test(int, struct ifnet *, struct mbuf **); 1405 #endif /* INET */ 1406 1407 #ifdef INET6 1408 int pf_test6(int, struct ifnet *, struct mbuf **); 1409 void pf_poolmask(struct pf_addr *, struct pf_addr*, 1410 struct pf_addr *, struct pf_addr *, u_int8_t); 1411 void pf_addr_inc(struct pf_addr *, sa_family_t); 1412 #endif /* INET6 */ 1413 1414 void *pf_pull_hdr(struct mbuf *, int, void *, int, u_short *, u_short *, 1415 sa_family_t); 1416 void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t); 1417 int pflog_packet(struct pfi_kif *, struct mbuf *, sa_family_t, u_int8_t, 1418 u_int8_t, struct pf_rule *, struct pf_rule *, struct pf_ruleset *); 1419 int pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *, 1420 struct pf_addr *, sa_family_t); 1421 int pf_match(u_int8_t, u_int32_t, u_int32_t, u_int32_t); 1422 int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t); 1423 int pf_match_uid(u_int8_t, uid_t, uid_t, uid_t); 1424 int pf_match_gid(u_int8_t, gid_t, gid_t, gid_t); 1425 1426 void pf_normalize_init(void); 1427 int pf_normalize_ip(struct mbuf **, int, struct pfi_kif *, u_short *); 1428 int pf_normalize_ip6(struct mbuf **, int, struct pfi_kif *, u_short *); 1429 int pf_normalize_tcp(int, struct pfi_kif *, struct mbuf *, int, int, void *, 1430 struct pf_pdesc *); 1431 void pf_normalize_tcp_cleanup(struct pf_state *); 1432 int pf_normalize_tcp_init(struct mbuf *, int, struct pf_pdesc *, 1433 struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *); 1434 int pf_normalize_tcp_stateful(struct mbuf *, int, struct pf_pdesc *, 1435 u_short *, struct tcphdr *, struct pf_state_peer *, 1436 struct pf_state_peer *, int *); 1437 u_int32_t 1438 pf_state_expires(const struct pf_state *); 1439 void pf_purge_expired_fragments(void); 1440 int pf_routable(struct pf_addr *addr, sa_family_t af); 1441 void pfr_initialize(void); 1442 int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t); 1443 void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t, 1444 u_int64_t, int, int, int); 1445 int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, 1446 struct pf_addr **, struct pf_addr **, sa_family_t); 1447 void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *); 1448 struct pfr_ktable * 1449 pfr_attach_table(struct pf_ruleset *, char *); 1450 void pfr_detach_table(struct pfr_ktable *); 1451 int pfr_clr_tables(struct pfr_table *, int *, int); 1452 int pfr_add_tables(struct pfr_table *, int, int *, int); 1453 int pfr_del_tables(struct pfr_table *, int, int *, int); 1454 int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int); 1455 int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int); 1456 int pfr_clr_tstats(struct pfr_table *, int, int *, int); 1457 int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int); 1458 int pfr_clr_addrs(struct pfr_table *, int *, int); 1459 int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1460 int); 1461 int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1462 int); 1463 int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1464 int *, int *, int *, int); 1465 int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int); 1466 int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int); 1467 int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *, 1468 int); 1469 int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1470 int); 1471 int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int); 1472 int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int); 1473 int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int); 1474 int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *, 1475 int *, u_int32_t, int); 1476 1477 void pfi_initialize(void); 1478 void pfi_cleanup(void); 1479 void pfi_attach_clone(struct if_clone *); 1480 void pfi_attach_ifnet(struct ifnet *); 1481 void pfi_detach_ifnet(struct ifnet *); 1482 struct pfi_kif *pfi_lookup_create(const char *); 1483 struct pfi_kif *pfi_lookup_if(const char *); 1484 int pfi_maybe_destroy(struct pfi_kif *); 1485 struct pfi_kif *pfi_attach_rule(const char *); 1486 void pfi_detach_rule(struct pfi_kif *); 1487 void pfi_attach_state(struct pfi_kif *); 1488 void pfi_detach_state(struct pfi_kif *); 1489 int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t); 1490 void pfi_dynaddr_copyout(struct pf_addr_wrap *); 1491 void pfi_dynaddr_remove(struct pf_addr_wrap *); 1492 void pfi_fill_oldstatus(struct pf_status *); 1493 int pfi_clr_istats(const char *, int *, int); 1494 int pfi_get_ifaces(const char *, struct pfi_if *, int *, int); 1495 int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *, 1496 sa_family_t); 1497 1498 extern struct pfi_statehead pfi_statehead; 1499 1500 u_int16_t pf_tagname2tag(char *); 1501 void pf_tag2tagname(u_int16_t, char *); 1502 void pf_tag_unref(u_int16_t); 1503 void pf_tag_packet(struct mbuf *, int); 1504 u_int32_t pf_qname2qid(char *); 1505 void pf_qid2qname(u_int32_t, char *); 1506 void pf_qid_unref(u_int32_t); 1507 1508 extern struct pf_status pf_status; 1509 extern vm_zone_t pf_frent_pl, pf_frag_pl; 1510 1511 struct pf_pool_limit { 1512 void *pp; 1513 unsigned limit; 1514 }; 1515 extern struct pf_pool_limit pf_pool_limits[PF_LIMIT_MAX]; 1516 1517 struct pf_frent { 1518 LIST_ENTRY(pf_frent) fr_next; 1519 struct ip *fr_ip; 1520 struct mbuf *fr_m; 1521 }; 1522 1523 struct pf_frcache { 1524 LIST_ENTRY(pf_frcache) fr_next; 1525 uint16_t fr_off; 1526 uint16_t fr_end; 1527 }; 1528 1529 struct pf_fragment { 1530 RB_ENTRY(pf_fragment) fr_entry; 1531 TAILQ_ENTRY(pf_fragment) frag_next; 1532 struct in_addr fr_src; 1533 struct in_addr fr_dst; 1534 u_int8_t fr_p; /* protocol of this fragment */ 1535 u_int8_t fr_flags; /* status flags */ 1536 u_int16_t fr_id; /* fragment id for reassemble */ 1537 u_int16_t fr_max; /* fragment data max */ 1538 u_int32_t fr_timeout; 1539 #define fr_queue fr_u.fru_queue 1540 #define fr_cache fr_u.fru_cache 1541 union { 1542 LIST_HEAD(pf_fragq, pf_frent) fru_queue; /* buffering */ 1543 LIST_HEAD(pf_cacheq, pf_frcache) fru_cache; /* non-buf */ 1544 } fr_u; 1545 }; 1546 #endif /* _KERNEL */ 1547 1548 /* The fingerprint functions can be linked into userland programs (tcpdump) */ 1549 int pf_osfp_add(struct pf_osfp_ioctl *); 1550 #ifdef _KERNEL 1551 struct pf_osfp_enlist * 1552 pf_osfp_fingerprint(struct pf_pdesc *, struct mbuf *, int, 1553 const struct tcphdr *); 1554 #endif /* _KERNEL */ 1555 struct pf_osfp_enlist * 1556 pf_osfp_fingerprint_hdr(const struct ip *, const struct tcphdr *); 1557 void pf_osfp_flush(void); 1558 int pf_osfp_get(struct pf_osfp_ioctl *); 1559 int pf_osfp_initialize(void); 1560 void pf_osfp_cleanup(void); 1561 int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t); 1562 struct pf_os_fingerprint * 1563 pf_osfp_validate(void); 1564 1565 1566 #endif /* _NET_PFVAR_H_ */ 1567