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 1.8 2008/04/11 18:21:48 dillon Exp $ */ 5 /* $OpenBSD: pfvar.h,v 1.244 2007/02/23 21:31:51 deraadt Exp $ */ 6 7 /* 8 * Copyright (c) 2004 The DragonFly Project. All rights reserved. 9 * 10 * Copyright (c) 2001 Daniel Hartmeier 11 * All rights reserved. 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 17 * - Redistributions of source code must retain the above copyright 18 * notice, this list of conditions and the following disclaimer. 19 * - Redistributions in binary form must reproduce the above 20 * copyright notice, this list of conditions and the following 21 * disclaimer in the documentation and/or other materials provided 22 * with the distribution. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 25 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 26 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 27 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 28 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 29 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 30 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 31 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 32 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 34 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 * 37 */ 38 39 #ifndef _NET_PFVAR_H_ 40 #define _NET_PFVAR_H_ 41 42 #include <sys/param.h> 43 #include <sys/types.h> 44 #include <sys/limits.h> 45 #include <sys/ioccom.h> 46 #include <sys/queue.h> 47 #include <sys/tree.h> 48 #include <sys/lock.h> 49 50 #include <net/radix.h> 51 #include <net/if_clone.h> 52 #include <netinet/in.h> 53 #include <netinet/in_pcb.h> 54 55 #ifdef _KERNEL 56 #include <vm/vm_zone.h> 57 #endif 58 59 /* 60 * XXX 61 * If we include <netipsec/keydb.h>, we need _KERNEL definition. 62 * This makes pfctl compilation difficult. 63 */ 64 union sockaddr_union { 65 struct sockaddr sa; 66 struct sockaddr_in sin; 67 struct sockaddr_in6 sin6; 68 }; 69 70 #include <netinet/tcp_fsm.h> 71 72 struct ip; 73 struct ip6_hdr; 74 75 #define PF_TCPS_PROXY_SRC ((TCP_NSTATES)+0) 76 #define PF_TCPS_PROXY_DST ((TCP_NSTATES)+1) 77 78 79 #define RTLABEL_LEN 32 80 #define IFG_ALL "all" /* group contains all interfaces */ 81 #define BPF_DIRECTION_OUT (1<<1) 82 #define PWAIT 0 83 #define RT_NUMFIBS 1 84 #define ALTQ_IS_ENABLED(ifq) ((ifq)->altq_flags & ALTQF_ENABLED) 85 86 87 #define PF_MD5_DIGEST_LENGTH 16 88 #ifdef MD5_DIGEST_LENGTH 89 #if PF_MD5_DIGEST_LENGTH != MD5_DIGEST_LENGTH 90 #error 91 #endif 92 #endif 93 94 enum { PF_INOUT, PF_IN, PF_OUT }; 95 enum { PF_LAN_EXT, PF_EXT_GWY, PF_ID }; 96 enum { PF_PASS, PF_DROP, PF_SCRUB, PF_NOSCRUB, PF_NAT, PF_NONAT, 97 PF_BINAT, PF_NOBINAT, PF_RDR, PF_NORDR, PF_SYNPROXY_DROP }; 98 enum { PF_RULESET_SCRUB, PF_RULESET_FILTER, PF_RULESET_NAT, 99 PF_RULESET_BINAT, PF_RULESET_RDR, PF_RULESET_MAX }; 100 enum { PF_OP_NONE, PF_OP_IRG, PF_OP_EQ, PF_OP_NE, PF_OP_LT, 101 PF_OP_LE, PF_OP_GT, PF_OP_GE, PF_OP_XRG, PF_OP_RRG }; 102 enum { PF_DEBUG_NONE, PF_DEBUG_URGENT, PF_DEBUG_MISC, PF_DEBUG_NOISY }; 103 enum { PF_CHANGE_NONE, PF_CHANGE_ADD_HEAD, PF_CHANGE_ADD_TAIL, 104 PF_CHANGE_ADD_BEFORE, PF_CHANGE_ADD_AFTER, 105 PF_CHANGE_REMOVE, PF_CHANGE_GET_TICKET }; 106 enum { PF_GET_NONE, PF_GET_CLR_CNTR }; 107 108 /* 109 * Note about PFTM_*: real indices into pf_rule.timeout[] come before 110 * PFTM_MAX, special cases afterwards. See pf_state_expires(). 111 */ 112 enum { PFTM_TCP_FIRST_PACKET, PFTM_TCP_OPENING, PFTM_TCP_ESTABLISHED, 113 PFTM_TCP_CLOSING, PFTM_TCP_FIN_WAIT, PFTM_TCP_CLOSED, 114 PFTM_UDP_FIRST_PACKET, PFTM_UDP_SINGLE, PFTM_UDP_MULTIPLE, 115 PFTM_ICMP_FIRST_PACKET, PFTM_ICMP_ERROR_REPLY, 116 PFTM_OTHER_FIRST_PACKET, PFTM_OTHER_SINGLE, 117 PFTM_OTHER_MULTIPLE, PFTM_FRAG, PFTM_INTERVAL, 118 PFTM_ADAPTIVE_START, PFTM_ADAPTIVE_END, PFTM_SRC_NODE, 119 PFTM_TS_DIFF, PFTM_MAX, PFTM_PURGE, PFTM_UNLINKED, 120 PFTM_UNTIL_PACKET }; 121 122 /* PFTM default values */ 123 #define PFTM_TCP_FIRST_PACKET_VAL 120 /* First TCP packet */ 124 #define PFTM_TCP_OPENING_VAL 30 /* No response yet */ 125 #define PFTM_TCP_ESTABLISHED_VAL 24*60*60/* Established */ 126 #define PFTM_TCP_CLOSING_VAL 15 * 60 /* Half closed */ 127 #define PFTM_TCP_FIN_WAIT_VAL 45 /* Got both FINs */ 128 #define PFTM_TCP_CLOSED_VAL 90 /* Got a RST */ 129 #define PFTM_UDP_FIRST_PACKET_VAL 60 /* First UDP packet */ 130 #define PFTM_UDP_SINGLE_VAL 30 /* Unidirectional */ 131 #define PFTM_UDP_MULTIPLE_VAL 60 /* Bidirectional */ 132 #define PFTM_ICMP_FIRST_PACKET_VAL 20 /* First ICMP packet */ 133 #define PFTM_ICMP_ERROR_REPLY_VAL 10 /* Got error response */ 134 #define PFTM_OTHER_FIRST_PACKET_VAL 60 /* First packet */ 135 #define PFTM_OTHER_SINGLE_VAL 30 /* Unidirectional */ 136 #define PFTM_OTHER_MULTIPLE_VAL 60 /* Bidirectional */ 137 #define PFTM_FRAG_VAL 30 /* Fragment expire */ 138 #define PFTM_INTERVAL_VAL 10 /* Expire interval */ 139 #define PFTM_SRC_NODE_VAL 0 /* Source tracking */ 140 #define PFTM_TS_DIFF_VAL 30 /* Allowed TS diff */ 141 142 enum { PF_NOPFROUTE, PF_FASTROUTE, PF_ROUTETO, PF_DUPTO, PF_REPLYTO }; 143 enum { PF_LIMIT_STATES, PF_LIMIT_SRC_NODES, PF_LIMIT_FRAGS, 144 PF_LIMIT_TABLES, PF_LIMIT_TABLE_ENTRIES, PF_LIMIT_MAX }; 145 #define PF_POOL_IDMASK 0x0f 146 enum { PF_POOL_NONE, PF_POOL_BITMASK, PF_POOL_RANDOM, 147 PF_POOL_SRCHASH, PF_POOL_ROUNDROBIN }; 148 enum { PF_ADDR_ADDRMASK, PF_ADDR_NOROUTE, PF_ADDR_DYNIFTL, 149 PF_ADDR_TABLE, PF_ADDR_RTLABEL, PF_ADDR_URPFFAILED }; 150 #define PF_POOL_TYPEMASK 0x0f 151 #define PF_POOL_STICKYADDR 0x20 152 #define PF_WSCALE_FLAG 0x80 153 #define PF_WSCALE_MASK 0x0f 154 155 #define PF_LOG 0x01 156 #define PF_LOG_ALL 0x02 157 #define PF_LOG_SOCKET_LOOKUP 0x04 158 159 struct pf_addr { 160 union { 161 struct in_addr v4; 162 struct in6_addr v6; 163 u_int8_t addr8[16]; 164 u_int16_t addr16[8]; 165 u_int32_t addr32[4]; 166 } pfa; /* 128-bit address */ 167 #define v4 pfa.v4 168 #define v6 pfa.v6 169 #define addr8 pfa.addr8 170 #define addr16 pfa.addr16 171 #define addr32 pfa.addr32 172 }; 173 174 #define PF_TABLE_NAME_SIZE 32 175 176 #define PFI_AFLAG_NETWORK 0x01 177 #define PFI_AFLAG_BROADCAST 0x02 178 #define PFI_AFLAG_PEER 0x04 179 #define PFI_AFLAG_MODEMASK 0x07 180 #define PFI_AFLAG_NOALIAS 0x08 181 182 struct pf_addr_wrap { 183 union { 184 struct { 185 struct pf_addr addr; 186 struct pf_addr mask; 187 } a; 188 char ifname[IFNAMSIZ]; 189 char tblname[PF_TABLE_NAME_SIZE]; 190 char rtlabelname[RTLABEL_LEN]; 191 u_int32_t rtlabel; 192 } v; 193 union { 194 struct pfi_dynaddr *dyn; 195 struct pfr_ktable *tbl; 196 int dyncnt; 197 int tblcnt; 198 } p; 199 u_int8_t type; /* PF_ADDR_* */ 200 u_int8_t iflags; /* PFI_AFLAG_* */ 201 }; 202 203 #ifdef _KERNEL 204 205 struct pfi_dynaddr { 206 TAILQ_ENTRY(pfi_dynaddr) entry; 207 struct pf_addr pfid_addr4; 208 struct pf_addr pfid_mask4; 209 struct pf_addr pfid_addr6; 210 struct pf_addr pfid_mask6; 211 struct pfr_ktable *pfid_kt; 212 struct pfi_kif *pfid_kif; 213 void *pfid_hook_cookie; 214 int pfid_net; /* mask or 128 */ 215 int pfid_acnt4; /* address count IPv4 */ 216 int pfid_acnt6; /* address count IPv6 */ 217 sa_family_t pfid_af; /* rule af */ 218 u_int8_t pfid_iflags; /* PFI_AFLAG_* */ 219 }; 220 221 /* 222 * Address manipulation macros 223 */ 224 225 /* XXX correct values for zinit? */ 226 #define ZONE_CREATE(var, type, desc) \ 227 var = zinit(desc, sizeof(type), 1, ZONE_DESTROYABLE, 1); \ 228 if (var == NULL) break 229 #define ZONE_DESTROY(a) zdestroy(a) 230 231 #define pool_get(p, f) zalloc(*(p)) 232 #define pool_put(p, o) zfree(*(p), (o)) 233 234 #define NTOHS(x) (x) = ntohs((__uint16_t)(x)) 235 #define HTONS(x) (x) = htons((__uint16_t)(x)) 236 237 #define PF_NAME "pf" 238 239 #define PF_MODVER 1 240 #define PFLOG_MODVER 1 241 #define PFSYNC_MODVER 1 242 243 #define PFLOG_MINVER 1 244 #define PFLOG_PREFVER PFLOG_MODVER 245 #define PFLOG_MAXVER 1 246 #define PFSYNC_MINVER 1 247 #define PFSYNC_PREFVER PFSYNC_MODVER 248 #define PFSYNC_MAXVER 1 249 250 /* prototyped for pf_subr.c */ 251 struct hook_desc { 252 TAILQ_ENTRY(hook_desc) hd_list; 253 void (*hd_fn)(void *); 254 void *hd_arg; 255 }; 256 TAILQ_HEAD(hook_desc_head, hook_desc); 257 258 void *hook_establish(struct hook_desc_head *, int, void (*)(void *), void *); 259 void hook_disestablish(struct hook_desc_head *, void *); 260 void dohooks(struct hook_desc_head *, int); 261 262 #define HOOK_REMOVE 0x01 263 #define HOOK_FREE 0x02 264 265 #ifdef INET 266 #ifndef INET6 267 #define PF_INET_ONLY 268 #endif /* ! INET6 */ 269 #endif /* INET */ 270 271 #ifdef INET6 272 #ifndef INET 273 #define PF_INET6_ONLY 274 #endif /* ! INET */ 275 #endif /* INET6 */ 276 277 #ifdef INET 278 #ifdef INET6 279 #define PF_INET_INET6 280 #endif /* INET6 */ 281 #endif /* INET */ 282 283 #else 284 285 #define PF_INET_INET6 286 287 #endif /* _KERNEL */ 288 289 /* Both IPv4 and IPv6 */ 290 #ifdef PF_INET_INET6 291 292 #define PF_AEQ(a, b, c) \ 293 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \ 294 ((a)->addr32[3] == (b)->addr32[3] && \ 295 (a)->addr32[2] == (b)->addr32[2] && \ 296 (a)->addr32[1] == (b)->addr32[1] && \ 297 (a)->addr32[0] == (b)->addr32[0])) \ 298 299 #define PF_ANEQ(a, b, c) \ 300 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \ 301 ((a)->addr32[3] != (b)->addr32[3] || \ 302 (a)->addr32[2] != (b)->addr32[2] || \ 303 (a)->addr32[1] != (b)->addr32[1] || \ 304 (a)->addr32[0] != (b)->addr32[0])) \ 305 306 #define PF_AZERO(a, c) \ 307 ((c == AF_INET && !(a)->addr32[0]) || \ 308 (!(a)->addr32[0] && !(a)->addr32[1] && \ 309 !(a)->addr32[2] && !(a)->addr32[3] )) \ 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 pf_addrcpy(a, b, f) 316 317 #define PF_AINC(a, f) \ 318 pf_addr_inc(a, f) 319 320 #define PF_POOLMASK(a, b, c, d, f) \ 321 pf_poolmask(a, b, c, d, f) 322 323 #else 324 325 /* Just IPv6 */ 326 327 #ifdef PF_INET6_ONLY 328 329 #define PF_AEQ(a, b, c) \ 330 ((a)->addr32[3] == (b)->addr32[3] && \ 331 (a)->addr32[2] == (b)->addr32[2] && \ 332 (a)->addr32[1] == (b)->addr32[1] && \ 333 (a)->addr32[0] == (b)->addr32[0]) \ 334 335 #define PF_ANEQ(a, b, c) \ 336 ((a)->addr32[3] != (b)->addr32[3] || \ 337 (a)->addr32[2] != (b)->addr32[2] || \ 338 (a)->addr32[1] != (b)->addr32[1] || \ 339 (a)->addr32[0] != (b)->addr32[0]) \ 340 341 #define PF_AZERO(a, c) \ 342 (!(a)->addr32[0] && \ 343 !(a)->addr32[1] && \ 344 !(a)->addr32[2] && \ 345 !(a)->addr32[3] ) \ 346 347 #define PF_MATCHA(n, a, m, b, f) \ 348 pf_match_addr(n, a, m, b, f) 349 350 #define PF_ACPY(a, b, f) \ 351 pf_addrcpy(a, b, f) 352 353 #define PF_AINC(a, f) \ 354 pf_addr_inc(a, f) 355 356 #define PF_POOLMASK(a, b, c, d, f) \ 357 pf_poolmask(a, b, c, d, f) 358 359 #else 360 361 /* Just IPv4 */ 362 #ifdef PF_INET_ONLY 363 364 #define PF_AEQ(a, b, c) \ 365 ((a)->addr32[0] == (b)->addr32[0]) 366 367 #define PF_ANEQ(a, b, c) \ 368 ((a)->addr32[0] != (b)->addr32[0]) 369 370 #define PF_AZERO(a, c) \ 371 (!(a)->addr32[0]) 372 373 #define PF_MATCHA(n, a, m, b, f) \ 374 pf_match_addr(n, a, m, b, f) 375 376 #define PF_ACPY(a, b, f) \ 377 (a)->v4.s_addr = (b)->v4.s_addr 378 379 #define PF_AINC(a, f) \ 380 do { \ 381 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \ 382 } while (0) 383 384 #define PF_POOLMASK(a, b, c, d, f) \ 385 do { \ 386 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \ 387 (((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \ 388 } while (0) 389 390 #endif /* PF_INET_ONLY */ 391 #endif /* PF_INET6_ONLY */ 392 #endif /* PF_INET_INET6 */ 393 394 #define PF_MISMATCHAW(aw, x, af, neg, ifp) \ 395 ( \ 396 (((aw)->type == PF_ADDR_NOROUTE && \ 397 pf_routable((x), (af), NULL)) || \ 398 (((aw)->type == PF_ADDR_URPFFAILED && (ifp) != NULL && \ 399 pf_routable((x), (af), (ifp))) || \ 400 ((aw)->type == PF_ADDR_RTLABEL && \ 401 !pf_rtlabel_match((x), (af), (aw))) || \ 402 ((aw)->type == PF_ADDR_TABLE && \ 403 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \ 404 ((aw)->type == PF_ADDR_DYNIFTL && \ 405 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \ 406 ((aw)->type == PF_ADDR_ADDRMASK && \ 407 !PF_AZERO(&(aw)->v.a.mask, (af)) && \ 408 !PF_MATCHA(0, &(aw)->v.a.addr, \ 409 &(aw)->v.a.mask, (x), (af))))) != \ 410 (neg) \ 411 ) 412 413 414 struct pf_rule_uid { 415 uid_t uid[2]; 416 u_int8_t op; 417 }; 418 419 struct pf_rule_gid { 420 uid_t gid[2]; 421 u_int8_t op; 422 }; 423 424 struct pf_rule_addr { 425 struct pf_addr_wrap addr; 426 u_int16_t port[2]; 427 u_int8_t neg; 428 u_int8_t port_op; 429 }; 430 431 struct pf_pooladdr { 432 struct pf_addr_wrap addr; 433 TAILQ_ENTRY(pf_pooladdr) entries; 434 char ifname[IFNAMSIZ]; 435 struct pfi_kif *kif; 436 }; 437 438 TAILQ_HEAD(pf_palist, pf_pooladdr); 439 440 struct pf_poolhashkey { 441 union { 442 u_int8_t key8[16]; 443 u_int16_t key16[8]; 444 u_int32_t key32[4]; 445 } pfk; /* 128-bit hash key */ 446 #define key8 pfk.key8 447 #define key16 pfk.key16 448 #define key32 pfk.key32 449 }; 450 451 struct pf_pool { 452 struct pf_palist list; 453 struct pf_pooladdr *cur; 454 struct pf_poolhashkey key; 455 struct pf_addr counter; 456 int tblidx; 457 u_int16_t proxy_port[2]; 458 u_int8_t port_op; 459 u_int8_t opts; 460 }; 461 462 463 /* A packed Operating System description for fingerprinting */ 464 typedef u_int32_t pf_osfp_t; 465 #define PF_OSFP_ANY ((pf_osfp_t)0) 466 #define PF_OSFP_UNKNOWN ((pf_osfp_t)-1) 467 #define PF_OSFP_NOMATCH ((pf_osfp_t)-2) 468 469 struct pf_osfp_entry { 470 SLIST_ENTRY(pf_osfp_entry) fp_entry; 471 pf_osfp_t fp_os; 472 int fp_enflags; 473 #define PF_OSFP_EXPANDED 0x001 /* expanded entry */ 474 #define PF_OSFP_GENERIC 0x002 /* generic signature */ 475 #define PF_OSFP_NODETAIL 0x004 /* no p0f details */ 476 #define PF_OSFP_LEN 32 477 char fp_class_nm[PF_OSFP_LEN]; 478 char fp_version_nm[PF_OSFP_LEN]; 479 char fp_subtype_nm[PF_OSFP_LEN]; 480 }; 481 #define PF_OSFP_ENTRY_EQ(a, b) \ 482 ((a)->fp_os == (b)->fp_os && \ 483 memcmp((a)->fp_class_nm, (b)->fp_class_nm, PF_OSFP_LEN) == 0 && \ 484 memcmp((a)->fp_version_nm, (b)->fp_version_nm, PF_OSFP_LEN) == 0 && \ 485 memcmp((a)->fp_subtype_nm, (b)->fp_subtype_nm, PF_OSFP_LEN) == 0) 486 487 /* handle pf_osfp_t packing */ 488 #define _FP_RESERVED_BIT 1 /* For the special negative #defines */ 489 #define _FP_UNUSED_BITS 1 490 #define _FP_CLASS_BITS 10 /* OS Class (Windows, Linux) */ 491 #define _FP_VERSION_BITS 10 /* OS version (95, 98, NT, 2.4.54, 3.2) */ 492 #define _FP_SUBTYPE_BITS 10 /* patch level (NT SP4, SP3, ECN patch) */ 493 #define PF_OSFP_UNPACK(osfp, class, version, subtype) do { \ 494 (class) = ((osfp) >> (_FP_VERSION_BITS+_FP_SUBTYPE_BITS)) & \ 495 ((1 << _FP_CLASS_BITS) - 1); \ 496 (version) = ((osfp) >> _FP_SUBTYPE_BITS) & \ 497 ((1 << _FP_VERSION_BITS) - 1);\ 498 (subtype) = (osfp) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 499 } while(0) 500 #define PF_OSFP_PACK(osfp, class, version, subtype) do { \ 501 (osfp) = ((class) & ((1 << _FP_CLASS_BITS) - 1)) << (_FP_VERSION_BITS \ 502 + _FP_SUBTYPE_BITS); \ 503 (osfp) |= ((version) & ((1 << _FP_VERSION_BITS) - 1)) << \ 504 _FP_SUBTYPE_BITS; \ 505 (osfp) |= (subtype) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 506 } while(0) 507 508 /* the fingerprint of an OSes TCP SYN packet */ 509 typedef u_int64_t pf_tcpopts_t; 510 struct pf_os_fingerprint { 511 SLIST_HEAD(pf_osfp_enlist, pf_osfp_entry) fp_oses; /* list of matches */ 512 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 513 u_int16_t fp_wsize; /* TCP window size */ 514 u_int16_t fp_psize; /* ip->ip_len */ 515 u_int16_t fp_mss; /* TCP MSS */ 516 u_int16_t fp_flags; 517 #define PF_OSFP_WSIZE_MOD 0x0001 /* Window modulus */ 518 #define PF_OSFP_WSIZE_DC 0x0002 /* Window don't care */ 519 #define PF_OSFP_WSIZE_MSS 0x0004 /* Window multiple of MSS */ 520 #define PF_OSFP_WSIZE_MTU 0x0008 /* Window multiple of MTU */ 521 #define PF_OSFP_PSIZE_MOD 0x0010 /* packet size modulus */ 522 #define PF_OSFP_PSIZE_DC 0x0020 /* packet size don't care */ 523 #define PF_OSFP_WSCALE 0x0040 /* TCP window scaling */ 524 #define PF_OSFP_WSCALE_MOD 0x0080 /* TCP window scale modulus */ 525 #define PF_OSFP_WSCALE_DC 0x0100 /* TCP window scale dont-care */ 526 #define PF_OSFP_MSS 0x0200 /* TCP MSS */ 527 #define PF_OSFP_MSS_MOD 0x0400 /* TCP MSS modulus */ 528 #define PF_OSFP_MSS_DC 0x0800 /* TCP MSS dont-care */ 529 #define PF_OSFP_DF 0x1000 /* IPv4 don't fragment bit */ 530 #define PF_OSFP_TS0 0x2000 /* Zero timestamp */ 531 #define PF_OSFP_INET6 0x4000 /* IPv6 */ 532 u_int8_t fp_optcnt; /* TCP option count */ 533 u_int8_t fp_wscale; /* TCP window scaling */ 534 u_int8_t fp_ttl; /* IPv4 TTL */ 535 #define PF_OSFP_MAXTTL_OFFSET 40 536 /* TCP options packing */ 537 #define PF_OSFP_TCPOPT_NOP 0x0 /* TCP NOP option */ 538 #define PF_OSFP_TCPOPT_WSCALE 0x1 /* TCP window scaling option */ 539 #define PF_OSFP_TCPOPT_MSS 0x2 /* TCP max segment size opt */ 540 #define PF_OSFP_TCPOPT_SACK 0x3 /* TCP SACK OK option */ 541 #define PF_OSFP_TCPOPT_TS 0x4 /* TCP timestamp option */ 542 #define PF_OSFP_TCPOPT_BITS 3 /* bits used by each option */ 543 #define PF_OSFP_MAX_OPTS \ 544 (sizeof(((struct pf_os_fingerprint *)0)->fp_tcpopts) * 8) \ 545 / PF_OSFP_TCPOPT_BITS 546 547 SLIST_ENTRY(pf_os_fingerprint) fp_next; 548 }; 549 550 struct pf_osfp_ioctl { 551 struct pf_osfp_entry fp_os; 552 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 553 u_int16_t fp_wsize; /* TCP window size */ 554 u_int16_t fp_psize; /* ip->ip_len */ 555 u_int16_t fp_mss; /* TCP MSS */ 556 u_int16_t fp_flags; 557 u_int8_t fp_optcnt; /* TCP option count */ 558 u_int8_t fp_wscale; /* TCP window scaling */ 559 u_int8_t fp_ttl; /* IPv4 TTL */ 560 561 int fp_getnum; /* DIOCOSFPGET number */ 562 }; 563 564 565 union pf_rule_ptr { 566 struct pf_rule *ptr; 567 u_int32_t nr; 568 }; 569 570 #define PF_ANCHOR_NAME_SIZE 64 571 572 struct pf_rule { 573 struct pf_rule_addr src; 574 struct pf_rule_addr dst; 575 #define PF_SKIP_IFP 0 576 #define PF_SKIP_DIR 1 577 #define PF_SKIP_AF 2 578 #define PF_SKIP_PROTO 3 579 #define PF_SKIP_SRC_ADDR 4 580 #define PF_SKIP_SRC_PORT 5 581 #define PF_SKIP_DST_ADDR 6 582 #define PF_SKIP_DST_PORT 7 583 #define PF_SKIP_COUNT 8 584 union pf_rule_ptr skip[PF_SKIP_COUNT]; 585 #define PF_RULE_LABEL_SIZE 64 586 char label[PF_RULE_LABEL_SIZE]; 587 #define PF_QNAME_SIZE 64 588 char ifname[IFNAMSIZ]; 589 char qname[PF_QNAME_SIZE]; 590 char pqname[PF_QNAME_SIZE]; 591 #define PF_TAG_NAME_SIZE 64 592 char tagname[PF_TAG_NAME_SIZE]; 593 char match_tagname[PF_TAG_NAME_SIZE]; 594 595 char overload_tblname[PF_TABLE_NAME_SIZE]; 596 597 TAILQ_ENTRY(pf_rule) entries; 598 struct pf_pool rpool; 599 600 u_int64_t evaluations; 601 u_int64_t packets[2]; 602 u_int64_t bytes[2]; 603 604 struct pfi_kif *kif; 605 struct pf_anchor *anchor; 606 struct pfr_ktable *overload_tbl; 607 608 pf_osfp_t os_fingerprint; 609 610 int rtableid; 611 u_int32_t timeout[PFTM_MAX]; 612 u_int32_t states; 613 u_int32_t max_states; 614 u_int32_t src_nodes; 615 u_int32_t max_src_nodes; 616 u_int32_t max_src_states; 617 u_int32_t max_src_conn; 618 struct { 619 u_int32_t limit; 620 u_int32_t seconds; 621 } max_src_conn_rate; 622 u_int32_t qid; 623 u_int32_t pqid; 624 u_int32_t rt_listid; 625 u_int32_t nr; 626 u_int32_t prob; 627 uid_t cuid; 628 pid_t cpid; 629 630 u_int16_t return_icmp; 631 u_int16_t return_icmp6; 632 u_int16_t max_mss; 633 u_int16_t tag; 634 u_int16_t match_tag; 635 636 struct pf_rule_uid uid; 637 struct pf_rule_gid gid; 638 639 u_int32_t rule_flag; 640 u_int8_t action; 641 u_int8_t direction; 642 u_int8_t log; 643 u_int8_t logif; 644 u_int8_t quick; 645 u_int8_t ifnot; 646 u_int8_t match_tag_not; 647 u_int8_t natpass; 648 649 #define PF_STATE_NORMAL 0x1 650 #define PF_STATE_MODULATE 0x2 651 #define PF_STATE_SYNPROXY 0x3 652 u_int8_t keep_state; 653 sa_family_t af; 654 u_int8_t proto; 655 u_int8_t type; 656 u_int8_t code; 657 u_int8_t flags; 658 u_int8_t flagset; 659 u_int8_t min_ttl; 660 u_int8_t allow_opts; 661 u_int8_t rt; 662 u_int8_t return_ttl; 663 u_int8_t tos; 664 u_int8_t anchor_relative; 665 u_int8_t anchor_wildcard; 666 667 #define PF_FLUSH 0x01 668 #define PF_FLUSH_GLOBAL 0x02 669 u_int8_t flush; 670 671 #define PF_PICKUPS_UNSPECIFIED 0 672 #define PF_PICKUPS_DISABLED 1 673 #define PF_PICKUPS_HASHONLY 2 674 #define PF_PICKUPS_ENABLED 3 675 u_int8_t pickup_mode; 676 u_int8_t unused01; /* available for use */ 677 }; 678 679 /* rule flags */ 680 #define PFRULE_DROP 0x0000 681 #define PFRULE_RETURNRST 0x0001 682 #define PFRULE_FRAGMENT 0x0002 683 #define PFRULE_RETURNICMP 0x0004 684 #define PFRULE_RETURN 0x0008 685 #define PFRULE_NOSYNC 0x0010 686 #define PFRULE_SRCTRACK 0x0020 /* track source states */ 687 #define PFRULE_RULESRCTRACK 0x0040 /* per rule */ 688 689 /* scrub flags */ 690 #define PFRULE_NODF 0x0100 691 #define PFRULE_FRAGCROP 0x0200 /* non-buffering frag cache */ 692 #define PFRULE_FRAGDROP 0x0400 /* drop funny fragments */ 693 #define PFRULE_RANDOMID 0x0800 694 #define PFRULE_REASSEMBLE_TCP 0x1000 695 696 /* rule flags again */ 697 #define PFRULE_IFBOUND 0x00010000 /* if-bound */ 698 699 #define PFSTATE_HIWAT 10000 /* default state table size */ 700 #define PFSTATE_ADAPT_START 6000 /* default adaptive timeout start */ 701 #define PFSTATE_ADAPT_END 12000 /* default adaptive timeout end */ 702 703 704 struct pf_threshold { 705 u_int32_t limit; 706 #define PF_THRESHOLD_MULT 1000 707 #define PF_THRESHOLD_MAX 0xffffffff / PF_THRESHOLD_MULT 708 u_int32_t seconds; 709 u_int32_t count; 710 u_int32_t last; 711 }; 712 713 struct pf_src_node { 714 RB_ENTRY(pf_src_node) entry; 715 struct pf_addr addr; 716 struct pf_addr raddr; 717 union pf_rule_ptr rule; 718 struct pfi_kif *kif; 719 u_int64_t bytes[2]; 720 u_int64_t packets[2]; 721 u_int32_t states; 722 u_int32_t conn; 723 struct pf_threshold conn_rate; 724 u_int32_t creation; 725 u_int32_t expire; 726 sa_family_t af; 727 u_int8_t ruletype; 728 }; 729 730 #define PFSNODE_HIWAT 10000 /* default source node table size */ 731 732 struct pf_state_scrub { 733 struct timeval pfss_last; /* time received last packet */ 734 u_int32_t pfss_tsecr; /* last echoed timestamp */ 735 u_int32_t pfss_tsval; /* largest timestamp */ 736 u_int32_t pfss_tsval0; /* original timestamp */ 737 u_int16_t pfss_flags; 738 #define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */ 739 #define PFSS_PAWS 0x0010 /* stricter PAWS checks */ 740 #define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */ 741 #define PFSS_DATA_TS 0x0040 /* timestamp on data packets */ 742 #define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */ 743 u_int8_t pfss_ttl; /* stashed TTL */ 744 u_int8_t pad; 745 u_int32_t pfss_ts_mod; /* timestamp modulation */ 746 }; 747 748 struct pf_state_host { 749 struct pf_addr addr; 750 u_int16_t port; 751 u_int16_t pad; 752 }; 753 754 struct pf_state_peer { 755 u_int32_t seqlo; /* Max sequence number sent */ 756 u_int32_t seqhi; /* Max the other end ACKd + win */ 757 u_int32_t seqdiff; /* Sequence number modulator */ 758 u_int16_t max_win; /* largest window (pre scaling) */ 759 u_int8_t state; /* active state level */ 760 u_int8_t wscale; /* window scaling factor */ 761 u_int16_t mss; /* Maximum segment size option */ 762 u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */ 763 struct pf_state_scrub *scrub; /* state is scrubbed */ 764 u_int8_t pad[3]; 765 }; 766 767 TAILQ_HEAD(pf_state_queue, pf_state); 768 769 /* keep synced with struct pf_state, used in RB_FIND */ 770 struct pf_state_cmp { 771 u_int64_t id; 772 u_int32_t creatorid; 773 struct pf_state_host lan; 774 struct pf_state_host gwy; 775 struct pf_state_host ext; 776 sa_family_t af; 777 u_int8_t proto; 778 u_int8_t direction; 779 u_int8_t pad; 780 }; 781 782 struct pf_state { 783 u_int64_t id; 784 u_int32_t creatorid; 785 struct pf_state_host lan; 786 struct pf_state_host gwy; 787 struct pf_state_host ext; 788 sa_family_t af; 789 u_int8_t proto; 790 u_int8_t direction; 791 u_int8_t pad; 792 u_int8_t log; 793 u_int8_t allow_opts; 794 u_int8_t timeout; 795 u_int8_t sync_flags; 796 u_int8_t pickup_mode; 797 #define PFSTATE_NOSYNC 0x01 798 #define PFSTATE_FROMSYNC 0x02 799 #define PFSTATE_STALE 0x04 800 #define PFSTATE_GOT_SYN1 0x04 /* got SYN in one direction */ 801 #define PFSTATE_GOT_SYN2 0x08 /* got SYN in the other direction */ 802 union { 803 struct { 804 RB_ENTRY(pf_state) entry_lan_ext; 805 RB_ENTRY(pf_state) entry_ext_gwy; 806 RB_ENTRY(pf_state) entry_id; 807 TAILQ_ENTRY(pf_state) entry_list; 808 struct pfi_kif *kif; 809 } s; 810 char ifname[IFNAMSIZ]; 811 } u; 812 struct pf_state_peer src; 813 struct pf_state_peer dst; 814 union pf_rule_ptr rule; 815 union pf_rule_ptr anchor; 816 union pf_rule_ptr nat_rule; 817 struct pf_addr rt_addr; 818 struct pfi_kif *rt_kif; 819 struct pf_src_node *src_node; 820 struct pf_src_node *nat_src_node; 821 u_int64_t packets[2]; 822 u_int64_t bytes[2]; 823 u_int32_t hash; 824 u_int32_t creation; 825 u_int32_t expire; 826 u_int32_t pfsync_time; 827 u_int16_t tag; 828 }; 829 830 #define PFSTATE_GOT_SYN_MASK (PFSTATE_GOT_SYN1|PFSTATE_GOT_SYN2) 831 832 TAILQ_HEAD(pf_rulequeue, pf_rule); 833 834 struct pf_anchor; 835 836 struct pf_ruleset { 837 struct { 838 struct pf_rulequeue queues[2]; 839 struct { 840 struct pf_rulequeue *ptr; 841 struct pf_rule **ptr_array; 842 u_int32_t rcount; 843 u_int32_t ticket; 844 int open; 845 } active, inactive; 846 } rules[PF_RULESET_MAX]; 847 struct pf_anchor *anchor; 848 u_int32_t tticket; 849 int tables; 850 int topen; 851 }; 852 853 RB_HEAD(pf_anchor_global, pf_anchor); 854 RB_HEAD(pf_anchor_node, pf_anchor); 855 struct pf_anchor { 856 RB_ENTRY(pf_anchor) entry_global; 857 RB_ENTRY(pf_anchor) entry_node; 858 struct pf_anchor *parent; 859 struct pf_anchor_node children; 860 char name[PF_ANCHOR_NAME_SIZE]; 861 char path[MAXPATHLEN]; 862 struct pf_ruleset ruleset; 863 int refcnt; /* anchor rules */ 864 int match; 865 }; 866 RB_PROTOTYPE(pf_anchor_global, pf_anchor, entry_global, pf_anchor_compare); 867 RB_PROTOTYPE(pf_anchor_node, pf_anchor, entry_node, pf_anchor_compare); 868 869 #define PF_RESERVED_ANCHOR "_pf" 870 871 #define PFR_TFLAG_PERSIST 0x00000001 872 #define PFR_TFLAG_CONST 0x00000002 873 #define PFR_TFLAG_ACTIVE 0x00000004 874 #define PFR_TFLAG_INACTIVE 0x00000008 875 #define PFR_TFLAG_REFERENCED 0x00000010 876 #define PFR_TFLAG_REFDANCHOR 0x00000020 877 #define PFR_TFLAG_USRMASK 0x00000003 878 #define PFR_TFLAG_SETMASK 0x0000003C 879 #define PFR_TFLAG_ALLMASK 0x0000003F 880 881 struct pfr_table { 882 char pfrt_anchor[MAXPATHLEN]; 883 char pfrt_name[PF_TABLE_NAME_SIZE]; 884 u_int32_t pfrt_flags; 885 u_int8_t pfrt_fback; 886 }; 887 888 enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED, 889 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE, 890 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_MAX }; 891 892 struct pfr_addr { 893 union { 894 struct in_addr _pfra_ip4addr; 895 struct in6_addr _pfra_ip6addr; 896 } pfra_u; 897 u_int8_t pfra_af; 898 u_int8_t pfra_net; 899 u_int8_t pfra_not; 900 u_int8_t pfra_fback; 901 }; 902 #define pfra_ip4addr pfra_u._pfra_ip4addr 903 #define pfra_ip6addr pfra_u._pfra_ip6addr 904 905 enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX }; 906 enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX }; 907 #define PFR_OP_XPASS PFR_OP_ADDR_MAX 908 909 struct pfr_astats { 910 struct pfr_addr pfras_a; 911 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 912 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 913 long pfras_tzero; 914 }; 915 916 enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX }; 917 918 struct pfr_tstats { 919 struct pfr_table pfrts_t; 920 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 921 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 922 u_int64_t pfrts_match; 923 u_int64_t pfrts_nomatch; 924 long pfrts_tzero; 925 int pfrts_cnt; 926 int pfrts_refcnt[PFR_REFCNT_MAX]; 927 }; 928 #define pfrts_name pfrts_t.pfrt_name 929 #define pfrts_flags pfrts_t.pfrt_flags 930 931 SLIST_HEAD(pfr_kentryworkq, pfr_kentry); 932 struct pfr_kentry { 933 struct radix_node pfrke_node[2]; 934 union sockaddr_union pfrke_sa; 935 u_int64_t pfrke_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 936 u_int64_t pfrke_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 937 SLIST_ENTRY(pfr_kentry) pfrke_workq; 938 long pfrke_tzero; 939 u_int8_t pfrke_af; 940 u_int8_t pfrke_net; 941 u_int8_t pfrke_not; 942 u_int8_t pfrke_mark; 943 u_int8_t pfrke_intrpool; 944 }; 945 946 SLIST_HEAD(pfr_ktableworkq, pfr_ktable); 947 RB_HEAD(pfr_ktablehead, pfr_ktable); 948 struct pfr_ktable { 949 struct pfr_tstats pfrkt_ts; 950 RB_ENTRY(pfr_ktable) pfrkt_tree; 951 SLIST_ENTRY(pfr_ktable) pfrkt_workq; 952 struct radix_node_head *pfrkt_ip4; 953 struct radix_node_head *pfrkt_ip6; 954 struct pfr_ktable *pfrkt_shadow; 955 struct pfr_ktable *pfrkt_root; 956 struct pf_ruleset *pfrkt_rs; 957 long pfrkt_larg; 958 int pfrkt_nflags; 959 }; 960 #define pfrkt_t pfrkt_ts.pfrts_t 961 #define pfrkt_name pfrkt_t.pfrt_name 962 #define pfrkt_anchor pfrkt_t.pfrt_anchor 963 #define pfrkt_ruleset pfrkt_t.pfrt_ruleset 964 #define pfrkt_flags pfrkt_t.pfrt_flags 965 #define pfrkt_cnt pfrkt_ts.pfrts_cnt 966 #define pfrkt_refcnt pfrkt_ts.pfrts_refcnt 967 #define pfrkt_packets pfrkt_ts.pfrts_packets 968 #define pfrkt_bytes pfrkt_ts.pfrts_bytes 969 #define pfrkt_match pfrkt_ts.pfrts_match 970 #define pfrkt_nomatch pfrkt_ts.pfrts_nomatch 971 #define pfrkt_tzero pfrkt_ts.pfrts_tzero 972 973 RB_HEAD(pf_state_tree_lan_ext, pf_state); 974 RB_PROTOTYPE(pf_state_tree_lan_ext, pf_state, 975 u.s.entry_lan_ext, pf_state_compare_lan_ext); 976 977 RB_HEAD(pf_state_tree_ext_gwy, pf_state); 978 RB_PROTOTYPE(pf_state_tree_ext_gwy, pf_state, 979 u.s.entry_ext_gwy, pf_state_compare_ext_gwy); 980 981 struct pfi_if { 982 char pfif_name[IFNAMSIZ]; 983 u_int64_t pfif_packets[2][2][2]; 984 u_int64_t pfif_bytes[2][2][2]; 985 u_int64_t pfif_addcnt; 986 u_int64_t pfif_delcnt; 987 long pfif_tzero; 988 int pfif_states; 989 int pfif_rules; 990 int pfif_flags; 991 }; 992 993 TAILQ_HEAD(pfi_grouphead, pfi_kif); 994 TAILQ_HEAD(pfi_statehead, pfi_kif); 995 RB_HEAD(pfi_ifhead, pfi_kif); 996 997 /* keep synced with pfi_kif, used in RB_FIND */ 998 struct pfi_kif_cmp { 999 char pfik_ifname[IFNAMSIZ]; 1000 }; 1001 1002 struct pfi_kif { 1003 struct pfi_if pfik_if; 1004 RB_ENTRY(pfi_kif) pfik_tree; 1005 u_int64_t pfik_packets[2][2][2]; 1006 u_int64_t pfik_bytes[2][2][2]; 1007 u_int32_t pfik_tzero; 1008 int pfik_flags; 1009 struct pf_state_tree_lan_ext pfik_lan_ext; 1010 struct pf_state_tree_ext_gwy pfik_ext_gwy; 1011 struct pfi_grouphead pfik_grouphead; 1012 TAILQ_ENTRY(pfi_kif) pfik_instances; 1013 TAILQ_ENTRY(pfi_kif) pfik_w_states; 1014 struct hook_desc_head *pfik_ah_head; 1015 void *pfik_ah_cookie; 1016 struct pfi_kif *pfik_parent; 1017 struct ifnet *pfik_ifp; 1018 struct ifg_group *pfik_group; 1019 int pfik_states; 1020 int pfik_rules; 1021 TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs; 1022 }; 1023 #define pfik_name pfik_if.pfif_name 1024 #define pfik_packets pfik_if.pfif_packets 1025 #define pfik_bytes pfik_if.pfif_bytes 1026 #define pfik_tzero pfik_if.pfif_tzero 1027 #define pfik_flags pfik_if.pfif_flags 1028 #define pfik_addcnt pfik_if.pfif_addcnt 1029 #define pfik_delcnt pfik_if.pfif_delcnt 1030 #define pfik_states pfik_if.pfif_states 1031 #define pfik_rules pfik_if.pfif_rules 1032 1033 enum pfi_kif_refs { 1034 PFI_KIF_REF_NONE, 1035 PFI_KIF_REF_STATE, 1036 PFI_KIF_REF_RULE 1037 }; 1038 1039 #define PFI_IFLAG_GROUP 0x0001 /* group of interfaces */ 1040 #define PFI_IFLAG_INSTANCE 0x0002 /* single instance */ 1041 #define PFI_IFLAG_CLONABLE 0x0010 /* clonable group */ 1042 #define PFI_IFLAG_DYNAMIC 0x0020 /* dynamic group */ 1043 #define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */ 1044 #define PFI_IFLAG_PLACEHOLDER 0x8000 /* placeholder group/interface */ 1045 1046 struct pf_pdesc { 1047 struct { 1048 int done; 1049 uid_t uid; 1050 gid_t gid; 1051 pid_t pid; 1052 } lookup; 1053 u_int64_t tot_len; /* Make Mickey money */ 1054 union { 1055 struct tcphdr *tcp; 1056 struct udphdr *udp; 1057 struct icmp *icmp; 1058 #ifdef INET6 1059 struct icmp6_hdr *icmp6; 1060 #endif /* INET6 */ 1061 void *any; 1062 } hdr; 1063 struct pf_addr baddr; /* address before translation */ 1064 struct pf_addr naddr; /* address after translation */ 1065 struct pf_rule *nat_rule; /* nat/rdr rule applied to packet */ 1066 struct pf_addr *src; 1067 struct pf_addr *dst; 1068 struct ether_header 1069 *eh; 1070 struct pf_mtag *pf_mtag; 1071 u_int16_t *ip_sum; 1072 u_int32_t p_len; /* total length of payload */ 1073 u_int16_t flags; /* Let SCRUB trigger behavior in 1074 * state code. Easier than tags */ 1075 #define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */ 1076 #define PFDESC_IP_REAS 0x0002 /* IP frags would've been reassembled */ 1077 sa_family_t af; 1078 u_int8_t proto; 1079 u_int8_t tos; 1080 }; 1081 1082 /* flags for RDR options */ 1083 #define PF_DPORT_RANGE 0x01 /* Dest port uses range */ 1084 #define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */ 1085 1086 /* Reasons code for passing/dropping a packet */ 1087 #define PFRES_MATCH 0 /* Explicit match of a rule */ 1088 #define PFRES_BADOFF 1 /* Bad offset for pull_hdr */ 1089 #define PFRES_FRAG 2 /* Dropping following fragment */ 1090 #define PFRES_SHORT 3 /* Dropping short packet */ 1091 #define PFRES_NORM 4 /* Dropping by normalizer */ 1092 #define PFRES_MEMORY 5 /* Dropped due to lacking mem */ 1093 #define PFRES_TS 6 /* Bad TCP Timestamp (RFC1323) */ 1094 #define PFRES_CONGEST 7 /* Congestion (of ipintrq) */ 1095 #define PFRES_IPOPTIONS 8 /* IP option */ 1096 #define PFRES_PROTCKSUM 9 /* Protocol checksum invalid */ 1097 #define PFRES_BADSTATE 10 /* State mismatch */ 1098 #define PFRES_STATEINS 11 /* State insertion failure */ 1099 #define PFRES_MAXSTATES 12 /* State limit */ 1100 #define PFRES_SRCLIMIT 13 /* Source node/conn limit */ 1101 #define PFRES_SYNPROXY 14 /* SYN proxy */ 1102 #define PFRES_MAX 15 /* total+1 */ 1103 1104 #define PFRES_NAMES { \ 1105 "match", \ 1106 "bad-offset", \ 1107 "fragment", \ 1108 "short", \ 1109 "normalize", \ 1110 "memory", \ 1111 "bad-timestamp", \ 1112 "congestion", \ 1113 "ip-option", \ 1114 "proto-cksum", \ 1115 "state-mismatch", \ 1116 "state-insert", \ 1117 "state-limit", \ 1118 "src-limit", \ 1119 "synproxy", \ 1120 NULL \ 1121 } 1122 1123 /* Counters for other things we want to keep track of */ 1124 #define LCNT_STATES 0 /* states */ 1125 #define LCNT_SRCSTATES 1 /* max-src-states */ 1126 #define LCNT_SRCNODES 2 /* max-src-nodes */ 1127 #define LCNT_SRCCONN 3 /* max-src-conn */ 1128 #define LCNT_SRCCONNRATE 4 /* max-src-conn-rate */ 1129 #define LCNT_OVERLOAD_TABLE 5 /* entry added to overload table */ 1130 #define LCNT_OVERLOAD_FLUSH 6 /* state entries flushed */ 1131 #define LCNT_MAX 7 /* total+1 */ 1132 1133 #define LCNT_NAMES { \ 1134 "max states per rule", \ 1135 "max-src-states", \ 1136 "max-src-nodes", \ 1137 "max-src-conn", \ 1138 "max-src-conn-rate", \ 1139 "overload table insertion", \ 1140 "overload flush states", \ 1141 NULL \ 1142 } 1143 1144 /* UDP state enumeration */ 1145 #define PFUDPS_NO_TRAFFIC 0 1146 #define PFUDPS_SINGLE 1 1147 #define PFUDPS_MULTIPLE 2 1148 1149 #define PFUDPS_NSTATES 3 /* number of state levels */ 1150 1151 #define PFUDPS_NAMES { \ 1152 "NO_TRAFFIC", \ 1153 "SINGLE", \ 1154 "MULTIPLE", \ 1155 NULL \ 1156 } 1157 1158 /* Other protocol state enumeration */ 1159 #define PFOTHERS_NO_TRAFFIC 0 1160 #define PFOTHERS_SINGLE 1 1161 #define PFOTHERS_MULTIPLE 2 1162 1163 #define PFOTHERS_NSTATES 3 /* number of state levels */ 1164 1165 #define PFOTHERS_NAMES { \ 1166 "NO_TRAFFIC", \ 1167 "SINGLE", \ 1168 "MULTIPLE", \ 1169 NULL \ 1170 } 1171 1172 #define FCNT_STATE_SEARCH 0 1173 #define FCNT_STATE_INSERT 1 1174 #define FCNT_STATE_REMOVALS 2 1175 #define FCNT_MAX 3 1176 1177 #define SCNT_SRC_NODE_SEARCH 0 1178 #define SCNT_SRC_NODE_INSERT 1 1179 #define SCNT_SRC_NODE_REMOVALS 2 1180 #define SCNT_MAX 3 1181 1182 #define ACTION_SET(a, x) \ 1183 do { \ 1184 if ((a) != NULL) \ 1185 *(a) = (x); \ 1186 } while (0) 1187 1188 #define REASON_SET(a, x) \ 1189 do { \ 1190 if ((a) != NULL) \ 1191 *(a) = (x); \ 1192 if (x < PFRES_MAX) \ 1193 pf_status.counters[x]++; \ 1194 } while (0) 1195 1196 struct pf_status { 1197 u_int64_t counters[PFRES_MAX]; 1198 u_int64_t lcounters[LCNT_MAX]; /* limit counters */ 1199 u_int64_t fcounters[FCNT_MAX]; 1200 u_int64_t scounters[SCNT_MAX]; 1201 u_int64_t pcounters[2][2][3]; 1202 u_int64_t bcounters[2][2]; 1203 u_int64_t stateid; 1204 u_int32_t running; 1205 u_int32_t states; 1206 u_int32_t src_nodes; 1207 u_int32_t since; 1208 u_int32_t debug; 1209 u_int32_t hostid; 1210 char ifname[IFNAMSIZ]; 1211 u_int8_t pf_chksum[PF_MD5_DIGEST_LENGTH]; 1212 }; 1213 1214 struct cbq_opts { 1215 u_int minburst; 1216 u_int maxburst; 1217 u_int pktsize; 1218 u_int maxpktsize; 1219 u_int ns_per_byte; 1220 u_int maxidle; 1221 int minidle; 1222 u_int offtime; 1223 int flags; 1224 }; 1225 1226 struct priq_opts { 1227 int flags; 1228 }; 1229 1230 struct hfsc_opts { 1231 /* real-time service curve */ 1232 u_int rtsc_m1; /* slope of the 1st segment in bps */ 1233 u_int rtsc_d; /* the x-projection of m1 in msec */ 1234 u_int rtsc_m2; /* slope of the 2nd segment in bps */ 1235 /* link-sharing service curve */ 1236 u_int lssc_m1; 1237 u_int lssc_d; 1238 u_int lssc_m2; 1239 /* upper-limit service curve */ 1240 u_int ulsc_m1; 1241 u_int ulsc_d; 1242 u_int ulsc_m2; 1243 int flags; 1244 }; 1245 1246 /* 1247 * XXX this needs some work 1248 */ 1249 struct fairq_opts { 1250 u_int nbuckets; /* hash buckets */ 1251 u_int hogs_m1; /* hog detection bandwidth */ 1252 int flags; 1253 1254 /* link-sharing service curve */ 1255 u_int lssc_m1; 1256 u_int lssc_d; 1257 u_int lssc_m2; 1258 }; 1259 1260 struct pf_altq { 1261 char ifname[IFNAMSIZ]; 1262 1263 void *altq_disc; /* discipline-specific state */ 1264 TAILQ_ENTRY(pf_altq) entries; 1265 1266 /* scheduler spec */ 1267 u_int8_t scheduler; /* scheduler type */ 1268 u_int16_t tbrsize; /* tokenbucket regulator size */ 1269 u_int32_t ifbandwidth; /* interface bandwidth */ 1270 1271 /* queue spec */ 1272 char qname[PF_QNAME_SIZE]; /* queue name */ 1273 char parent[PF_QNAME_SIZE]; /* parent name */ 1274 u_int32_t parent_qid; /* parent queue id */ 1275 u_int32_t bandwidth; /* queue bandwidth */ 1276 u_int8_t priority; /* priority */ 1277 u_int16_t qlimit; /* queue size limit */ 1278 u_int16_t flags; /* misc flags */ 1279 union { 1280 struct cbq_opts cbq_opts; 1281 struct priq_opts priq_opts; 1282 struct hfsc_opts hfsc_opts; 1283 struct fairq_opts fairq_opts; 1284 } pq_u; 1285 1286 u_int32_t qid; /* return value */ 1287 }; 1288 1289 #define PF_TAG_GENERATED 0x01 1290 #define PF_TAG_FRAGCACHE 0x02 1291 #define PF_TAG_TRANSLATE_LOCALHOST 0x04 1292 #define PF_TAG_STATE_HASHED 0x08 1293 1294 struct pf_mtag { 1295 void *hdr; /* saved hdr pos in mbuf, for ECN */ 1296 u_int rtableid; /* alternate routing table id */ 1297 u_int32_t qid; /* queue id */ 1298 u_int16_t tag; /* tag id */ 1299 u_int8_t flags; 1300 u_int8_t routed; 1301 sa_family_t af; /* for ECN */ 1302 u_int32_t state_hash; /* for fairq */ 1303 }; 1304 1305 struct pf_tag { 1306 u_int16_t tag; /* tag id */ 1307 }; 1308 1309 struct pf_tagname { 1310 TAILQ_ENTRY(pf_tagname) entries; 1311 char name[PF_TAG_NAME_SIZE]; 1312 u_int16_t tag; 1313 int ref; 1314 }; 1315 1316 #define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */ 1317 #define PFFRAG_FRAG_HIWAT 1000 /* Number of fragmented packets */ 1318 #define PFFRAG_FRCENT_HIWAT 50000 /* Number of fragment cache entries */ 1319 #define PFFRAG_FRCACHE_HIWAT 10000 /* Number of fragment descriptors */ 1320 1321 #define PFR_KTABLE_HIWAT 1000 /* Number of tables */ 1322 #define PFR_KENTRY_HIWAT 200000 /* Number of table entries */ 1323 #define PFR_KENTRY_HIWAT_SMALL 100000 /* Number of table entries (tiny hosts) */ 1324 1325 /* 1326 * ioctl parameter structures 1327 */ 1328 1329 struct pfioc_pooladdr { 1330 u_int32_t action; 1331 u_int32_t ticket; 1332 u_int32_t nr; 1333 u_int32_t r_num; 1334 u_int8_t r_action; 1335 u_int8_t r_last; 1336 u_int8_t af; 1337 char anchor[MAXPATHLEN]; 1338 struct pf_pooladdr addr; 1339 }; 1340 1341 struct pfioc_rule { 1342 u_int32_t action; 1343 u_int32_t ticket; 1344 u_int32_t pool_ticket; 1345 u_int32_t nr; 1346 char anchor[MAXPATHLEN]; 1347 char anchor_call[MAXPATHLEN]; 1348 struct pf_rule rule; 1349 }; 1350 1351 struct pfioc_natlook { 1352 struct pf_addr saddr; 1353 struct pf_addr daddr; 1354 struct pf_addr rsaddr; 1355 struct pf_addr rdaddr; 1356 u_int16_t sport; 1357 u_int16_t dport; 1358 u_int16_t rsport; 1359 u_int16_t rdport; 1360 sa_family_t af; 1361 u_int8_t proto; 1362 u_int8_t direction; 1363 }; 1364 1365 struct pfioc_state { 1366 u_int32_t nr; 1367 struct pf_state state; 1368 }; 1369 1370 struct pfioc_src_node_kill { 1371 /* XXX returns the number of src nodes killed in psnk_af */ 1372 sa_family_t psnk_af; 1373 struct pf_rule_addr psnk_src; 1374 struct pf_rule_addr psnk_dst; 1375 }; 1376 1377 struct pfioc_state_kill { 1378 /* XXX returns the number of states killed in psk_af */ 1379 sa_family_t psk_af; 1380 int psk_proto; 1381 struct pf_rule_addr psk_src; 1382 struct pf_rule_addr psk_dst; 1383 char psk_ifname[IFNAMSIZ]; 1384 }; 1385 1386 struct pfioc_states { 1387 int ps_len; 1388 union { 1389 caddr_t psu_buf; 1390 struct pf_state *psu_states; 1391 } ps_u; 1392 #define ps_buf ps_u.psu_buf 1393 #define ps_states ps_u.psu_states 1394 }; 1395 1396 struct pfioc_src_nodes { 1397 int psn_len; 1398 union { 1399 caddr_t psu_buf; 1400 struct pf_src_node *psu_src_nodes; 1401 } psn_u; 1402 #define psn_buf psn_u.psu_buf 1403 #define psn_src_nodes psn_u.psu_src_nodes 1404 }; 1405 1406 struct pfioc_if { 1407 char ifname[IFNAMSIZ]; 1408 }; 1409 1410 struct pfioc_tm { 1411 int timeout; 1412 int seconds; 1413 }; 1414 1415 struct pfioc_limit { 1416 int index; 1417 unsigned limit; 1418 }; 1419 1420 struct pfioc_altq { 1421 u_int32_t action; 1422 u_int32_t ticket; 1423 u_int32_t nr; 1424 struct pf_altq altq; 1425 }; 1426 1427 struct pfioc_qstats { 1428 u_int32_t ticket; 1429 u_int32_t nr; 1430 void *buf; 1431 int nbytes; 1432 u_int8_t scheduler; 1433 }; 1434 1435 struct pfioc_anchor { 1436 u_int32_t nr; 1437 char name[PF_ANCHOR_NAME_SIZE]; 1438 }; 1439 1440 struct pfioc_ruleset { 1441 u_int32_t nr; 1442 char path[MAXPATHLEN]; 1443 char name[PF_ANCHOR_NAME_SIZE]; 1444 }; 1445 1446 #define PF_RULESET_ALTQ (PF_RULESET_MAX) 1447 #define PF_RULESET_TABLE (PF_RULESET_MAX+1) 1448 struct pfioc_trans { 1449 int size; /* number of elements */ 1450 int esize; /* size of each element in bytes */ 1451 struct pfioc_trans_e { 1452 int rs_num; 1453 char anchor[MAXPATHLEN]; 1454 u_int32_t ticket; 1455 } *array; 1456 }; 1457 1458 #define PFR_FLAG_ATOMIC 0x00000001 1459 #define PFR_FLAG_DUMMY 0x00000002 1460 #define PFR_FLAG_FEEDBACK 0x00000004 1461 #define PFR_FLAG_CLSTATS 0x00000008 1462 #define PFR_FLAG_ADDRSTOO 0x00000010 1463 #define PFR_FLAG_REPLACE 0x00000020 1464 #define PFR_FLAG_ALLRSETS 0x00000040 1465 #define PFR_FLAG_ALLMASK 0x0000007F 1466 #ifdef _KERNEL 1467 #define PFR_FLAG_USERIOCTL 0x10000000 1468 #endif 1469 1470 struct pfioc_table { 1471 struct pfr_table pfrio_table; 1472 void *pfrio_buffer; 1473 int pfrio_esize; 1474 int pfrio_size; 1475 int pfrio_size2; 1476 int pfrio_nadd; 1477 int pfrio_ndel; 1478 int pfrio_nchange; 1479 int pfrio_flags; 1480 u_int32_t pfrio_ticket; 1481 }; 1482 #define pfrio_exists pfrio_nadd 1483 #define pfrio_nzero pfrio_nadd 1484 #define pfrio_nmatch pfrio_nadd 1485 #define pfrio_naddr pfrio_size2 1486 #define pfrio_setflag pfrio_size2 1487 #define pfrio_clrflag pfrio_nadd 1488 1489 struct pfioc_iface { 1490 char pfiio_name[IFNAMSIZ]; 1491 void *pfiio_buffer; 1492 int pfiio_esize; 1493 int pfiio_size; 1494 int pfiio_nzero; 1495 int pfiio_flags; 1496 }; 1497 1498 1499 /* 1500 * ioctl operations 1501 */ 1502 1503 #define DIOCSTART _IO ('D', 1) 1504 #define DIOCSTOP _IO ('D', 2) 1505 #define DIOCBEGINRULES _IOWR('D', 3, struct pfioc_rule) 1506 #define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule) 1507 #define DIOCCOMMITRULES _IOWR('D', 5, struct pfioc_rule) 1508 #define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule) 1509 #define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule) 1510 /* XXX cut 8 - 17 */ 1511 #define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill) 1512 #define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state) 1513 #define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if) 1514 #define DIOCGETSTATUS _IOWR('D', 21, struct pf_status) 1515 #define DIOCCLRSTATUS _IO ('D', 22) 1516 #define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook) 1517 #define DIOCSETDEBUG _IOWR('D', 24, u_int32_t) 1518 #define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states) 1519 #define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule) 1520 /* XXX cut 26 - 28 */ 1521 #define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm) 1522 #define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm) 1523 #define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state) 1524 #define DIOCCLRRULECTRS _IO ('D', 38) 1525 #define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit) 1526 #define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit) 1527 #define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill) 1528 #define DIOCSTARTALTQ _IO ('D', 42) 1529 #define DIOCSTOPALTQ _IO ('D', 43) 1530 #define DIOCBEGINALTQS _IOWR('D', 44, u_int32_t) 1531 #define DIOCADDALTQ _IOWR('D', 45, struct pfioc_altq) 1532 #define DIOCCOMMITALTQS _IOWR('D', 46, u_int32_t) 1533 #define DIOCGETALTQS _IOWR('D', 47, struct pfioc_altq) 1534 #define DIOCGETALTQ _IOWR('D', 48, struct pfioc_altq) 1535 #define DIOCCHANGEALTQ _IOWR('D', 49, struct pfioc_altq) 1536 #define DIOCGETQSTATS _IOWR('D', 50, struct pfioc_qstats) 1537 #define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr) 1538 #define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr) 1539 #define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr) 1540 #define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr) 1541 #define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr) 1542 #define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset) 1543 #define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset) 1544 #define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table) 1545 #define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table) 1546 #define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table) 1547 #define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table) 1548 #define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table) 1549 #define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table) 1550 #define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table) 1551 #define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table) 1552 #define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table) 1553 #define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table) 1554 #define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table) 1555 #define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table) 1556 #define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table) 1557 #define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table) 1558 #define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table) 1559 #define DIOCRINABEGIN _IOWR('D', 75, struct pfioc_table) 1560 #define DIOCRINACOMMIT _IOWR('D', 76, struct pfioc_table) 1561 #define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table) 1562 #define DIOCOSFPFLUSH _IO('D', 78) 1563 #define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl) 1564 #define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl) 1565 #define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans) 1566 #define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans) 1567 #define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans) 1568 #define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes) 1569 #define DIOCCLRSRCNODES _IO('D', 85) 1570 #define DIOCSETHOSTID _IOWR('D', 86, u_int32_t) 1571 #define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface) 1572 #define DIOCICLRISTATS _IOWR('D', 88, struct pfioc_iface) 1573 #define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface) 1574 #define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface) 1575 #define DIOCKILLSRCNODES _IOWR('D', 91, struct pfioc_src_node_kill) 1576 struct pf_ifspeed { 1577 char ifname[IFNAMSIZ]; 1578 u_int32_t baudrate; 1579 }; 1580 #define DIOCGIFSPEED _IOWR('D', 89, struct pf_ifspeed) 1581 1582 #ifdef _KERNEL 1583 RB_HEAD(pf_src_tree, pf_src_node); 1584 RB_PROTOTYPE(pf_src_tree, pf_src_node, entry, pf_src_compare); 1585 extern struct pf_src_tree tree_src_tracking; 1586 1587 RB_HEAD(pf_state_tree_id, pf_state); 1588 RB_PROTOTYPE(pf_state_tree_id, pf_state, 1589 entry_id, pf_state_compare_id); 1590 extern struct pf_state_tree_id tree_id; 1591 extern struct pf_state_queue state_list; 1592 1593 TAILQ_HEAD(pf_poolqueue, pf_pool); 1594 extern struct pf_poolqueue pf_pools[2]; 1595 TAILQ_HEAD(pf_altqqueue, pf_altq); 1596 extern struct pf_altqqueue pf_altqs[2]; 1597 extern struct pf_palist pf_pabuf; 1598 1599 extern u_int32_t ticket_altqs_active; 1600 extern u_int32_t ticket_altqs_inactive; 1601 extern int altqs_inactive_open; 1602 extern u_int32_t ticket_pabuf; 1603 extern struct pf_altqqueue *pf_altqs_active; 1604 extern struct pf_altqqueue *pf_altqs_inactive; 1605 extern struct pf_poolqueue *pf_pools_active; 1606 extern struct pf_poolqueue *pf_pools_inactive; 1607 extern int pf_tbladdr_setup(struct pf_ruleset *, 1608 struct pf_addr_wrap *); 1609 extern void pf_tbladdr_remove(struct pf_addr_wrap *); 1610 extern void pf_tbladdr_copyout(struct pf_addr_wrap *); 1611 extern void pf_calc_skip_steps(struct pf_rulequeue *); 1612 extern vm_zone_t pf_src_tree_pl, pf_rule_pl; 1613 extern vm_zone_t pf_state_pl, pf_altq_pl, pf_pooladdr_pl; 1614 extern vm_zone_t pfr_ktable_pl, pfr_kentry_pl; 1615 extern vm_zone_t pf_cache_pl, pf_cent_pl; 1616 extern vm_zone_t pf_state_scrub_pl; 1617 extern vm_zone_t pfi_addr_pl; 1618 extern void pf_purge_thread(void *); 1619 extern int pf_purge_expired_src_nodes(int); 1620 extern int pf_purge_expired_states(u_int32_t, int); 1621 extern void pf_unlink_state(struct pf_state *); 1622 extern void pf_free_state(struct pf_state *); 1623 extern int pf_insert_state(struct pfi_kif *, 1624 struct pf_state *); 1625 extern int pf_insert_src_node(struct pf_src_node **, 1626 struct pf_rule *, struct pf_addr *, 1627 sa_family_t); 1628 void pf_src_tree_remove_state(struct pf_state *); 1629 u_int32_t pf_state_hash(struct pf_state *s); 1630 extern struct pf_state *pf_find_state_byid(struct pf_state_cmp *); 1631 extern struct pf_state *pf_find_state_all(struct pf_state_cmp *key, 1632 u_int8_t tree, int *more); 1633 extern void pf_print_state(struct pf_state *); 1634 extern void pf_print_flags(u_int8_t); 1635 extern u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t, 1636 u_int8_t); 1637 1638 extern struct ifnet *sync_ifp; 1639 extern struct pf_rule pf_default_rule; 1640 extern void pf_addrcpy(struct pf_addr *, struct pf_addr *, 1641 u_int8_t); 1642 void pf_rm_rule(struct pf_rulequeue *, 1643 struct pf_rule *); 1644 1645 #ifdef INET 1646 int pf_test(int, struct ifnet *, struct mbuf **, struct ether_header *, struct inpcb *); 1647 #endif /* INET */ 1648 1649 #ifdef INET6 1650 int pf_test6(int, struct ifnet *, struct mbuf **, struct ether_header *, struct inpcb *); 1651 void pf_poolmask(struct pf_addr *, struct pf_addr*, 1652 struct pf_addr *, struct pf_addr *, u_int8_t); 1653 void pf_addr_inc(struct pf_addr *, sa_family_t); 1654 #endif /* INET6 */ 1655 1656 u_int32_t pf_new_isn(struct pf_state *); /* From FreeBSD */ 1657 void *pf_pull_hdr(struct mbuf *, int, void *, int, u_short *, u_short *, 1658 sa_family_t); 1659 void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t); 1660 int pflog_packet(struct pfi_kif *, struct mbuf *, sa_family_t, u_int8_t, 1661 u_int8_t, struct pf_rule *, struct pf_rule *, struct pf_ruleset *, 1662 struct pf_pdesc *); 1663 int pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *, 1664 struct pf_addr *, sa_family_t); 1665 int pf_match(u_int8_t, u_int32_t, u_int32_t, u_int32_t); 1666 int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t); 1667 int pf_match_uid(u_int8_t, uid_t, uid_t, uid_t); 1668 int pf_match_gid(u_int8_t, gid_t, gid_t, gid_t); 1669 1670 void pf_normalize_init(void); 1671 int pf_normalize_ip(struct mbuf **, int, struct pfi_kif *, u_short *, 1672 struct pf_pdesc *); 1673 int pf_normalize_ip6(struct mbuf **, int, struct pfi_kif *, u_short *, 1674 struct pf_pdesc *); 1675 int pf_normalize_tcp(int, struct pfi_kif *, struct mbuf *, int, int, void *, 1676 struct pf_pdesc *); 1677 void pf_normalize_tcp_cleanup(struct pf_state *); 1678 int pf_normalize_tcp_init(struct mbuf *, int, struct pf_pdesc *, 1679 struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *); 1680 int pf_normalize_tcp_stateful(struct mbuf *, int, struct pf_pdesc *, 1681 u_short *, struct tcphdr *, struct pf_state *, 1682 struct pf_state_peer *, struct pf_state_peer *, int *); 1683 u_int32_t 1684 pf_state_expires(const struct pf_state *); 1685 void pf_purge_expired_fragments(void); 1686 int pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kif *); 1687 int pf_rtlabel_match(struct pf_addr *, sa_family_t, struct pf_addr_wrap *); 1688 int pf_socket_lookup(int, struct pf_pdesc *, struct inpcb *); 1689 void pfr_initialize(void); 1690 int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t); 1691 void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t, 1692 u_int64_t, int, int, int); 1693 int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, 1694 struct pf_addr **, struct pf_addr **, sa_family_t); 1695 void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *); 1696 struct pfr_ktable * 1697 pfr_attach_table(struct pf_ruleset *, char *); 1698 void pfr_detach_table(struct pfr_ktable *); 1699 int pfr_clr_tables(struct pfr_table *, int *, int); 1700 int pfr_add_tables(struct pfr_table *, int, int *, int); 1701 int pfr_del_tables(struct pfr_table *, int, int *, int); 1702 int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int); 1703 int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int); 1704 int pfr_clr_tstats(struct pfr_table *, int, int *, int); 1705 int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int); 1706 int pfr_clr_addrs(struct pfr_table *, int *, int); 1707 int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *, long); 1708 int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1709 int); 1710 int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1711 int); 1712 int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1713 int *, int *, int *, int, u_int32_t); 1714 int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int); 1715 int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int); 1716 int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *, 1717 int); 1718 int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1719 int); 1720 int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int); 1721 int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int); 1722 int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int); 1723 int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *, 1724 int *, u_int32_t, int); 1725 1726 extern struct pfi_statehead pfi_statehead; 1727 extern struct pfi_kif *pfi_all; 1728 1729 void pfi_initialize(void); 1730 struct pfi_kif *pfi_kif_get(const char *); 1731 void pfi_cleanup(void); 1732 void pfi_attach_clone(struct if_clone *); 1733 void pfi_kif_ref(struct pfi_kif *, enum pfi_kif_refs); 1734 void pfi_kif_unref(struct pfi_kif *, enum pfi_kif_refs); 1735 int pfi_kif_match(struct pfi_kif *, struct pfi_kif *); 1736 void pfi_attach_ifnet(struct ifnet *); 1737 void pfi_detach_ifnet(struct ifnet *); 1738 struct pfi_kif *pfi_lookup_create(const char *); 1739 struct pfi_kif *pfi_lookup_if(const char *); 1740 void pfi_attach_ifgroup(struct ifg_group *); 1741 void pfi_detach_ifgroup(struct ifg_group *); 1742 void pfi_group_change(const char *); 1743 int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *, 1744 sa_family_t); 1745 int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t); 1746 void pfi_dynaddr_remove(struct pf_addr_wrap *); 1747 void pfi_dynaddr_copyout(struct pf_addr_wrap *); 1748 void pfi_fill_oldstatus(struct pf_status *); 1749 int pfi_clr_istats(const char *); 1750 int pfi_get_ifaces(const char *, struct pfi_kif *, int *); 1751 int pfi_set_flags(const char *, int); 1752 int pfi_clear_flags(const char *, int); 1753 1754 u_int16_t pf_tagname2tag(char *); 1755 void pf_tag2tagname(u_int16_t, char *); 1756 void pf_tag_ref(u_int16_t); 1757 void pf_tag_unref(u_int16_t); 1758 int pf_tag_packet(struct mbuf *, struct pf_mtag *, int, int); 1759 u_int32_t pf_qname2qid(char *); 1760 void pf_qid2qname(u_int32_t, char *); 1761 void pf_qid_unref(u_int32_t); 1762 struct pf_mtag *pf_find_mtag(struct mbuf *); 1763 struct pf_mtag *pf_get_mtag(struct mbuf *); 1764 1765 extern struct pf_status pf_status; 1766 extern vm_zone_t pf_frent_pl, pf_frag_pl; 1767 extern struct lock pf_consistency_lock; 1768 1769 struct pf_pool_limit { 1770 void *pp; 1771 unsigned limit; 1772 }; 1773 extern struct pf_pool_limit pf_pool_limits[PF_LIMIT_MAX]; 1774 1775 struct pf_frent { 1776 LIST_ENTRY(pf_frent) fr_next; 1777 struct ip *fr_ip; 1778 struct mbuf *fr_m; 1779 }; 1780 1781 struct pf_frcache { 1782 LIST_ENTRY(pf_frcache) fr_next; 1783 uint16_t fr_off; 1784 uint16_t fr_end; 1785 }; 1786 1787 struct pf_fragment { 1788 RB_ENTRY(pf_fragment) fr_entry; 1789 TAILQ_ENTRY(pf_fragment) frag_next; 1790 struct in_addr fr_src; 1791 struct in_addr fr_dst; 1792 u_int8_t fr_p; /* protocol of this fragment */ 1793 u_int8_t fr_flags; /* status flags */ 1794 u_int16_t fr_id; /* fragment id for reassemble */ 1795 u_int16_t fr_max; /* fragment data max */ 1796 u_int32_t fr_timeout; 1797 #define fr_queue fr_u.fru_queue 1798 #define fr_cache fr_u.fru_cache 1799 union { 1800 LIST_HEAD(pf_fragq, pf_frent) fru_queue; /* buffering */ 1801 LIST_HEAD(pf_cacheq, pf_frcache) fru_cache; /* non-buf */ 1802 } fr_u; 1803 }; 1804 1805 #endif /* _KERNEL */ 1806 1807 extern struct pf_anchor_global pf_anchors; 1808 extern struct pf_anchor pf_main_anchor; 1809 #define pf_main_ruleset pf_main_anchor.ruleset 1810 1811 /* these ruleset functions can be linked into userland programs (pfctl) */ 1812 int pf_get_ruleset_number(u_int8_t); 1813 void pf_init_ruleset(struct pf_ruleset *); 1814 int pf_anchor_setup(struct pf_rule *, 1815 const struct pf_ruleset *, const char *); 1816 int pf_anchor_copyout(const struct pf_ruleset *, 1817 const struct pf_rule *, struct pfioc_rule *); 1818 void pf_anchor_remove(struct pf_rule *); 1819 void pf_remove_if_empty_ruleset(struct pf_ruleset *); 1820 struct pf_anchor *pf_find_anchor(const char *); 1821 struct pf_ruleset *pf_find_ruleset(const char *); 1822 struct pf_ruleset *pf_find_or_create_ruleset(const char *); 1823 void pf_rs_initialize(void); 1824 1825 /* The fingerprint functions can be linked into userland programs (tcpdump) */ 1826 int pf_osfp_add(struct pf_osfp_ioctl *); 1827 #ifdef _KERNEL 1828 struct pf_osfp_enlist * 1829 pf_osfp_fingerprint(struct pf_pdesc *, struct mbuf *, int, 1830 const struct tcphdr *); 1831 #endif /* _KERNEL */ 1832 struct pf_osfp_enlist * 1833 pf_osfp_fingerprint_hdr(const struct ip *, const struct ip6_hdr *, 1834 const struct tcphdr *); 1835 void pf_osfp_flush(void); 1836 int pf_osfp_get(struct pf_osfp_ioctl *); 1837 int pf_osfp_initialize(void); 1838 void pf_osfp_cleanup(void); 1839 int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t); 1840 struct pf_os_fingerprint * 1841 pf_osfp_validate(void); 1842 1843 1844 #endif /* _NET_PFVAR_H_ */ 1845