1 /* $OpenBSD: pfvar.h,v 1.254 2007/07/13 09:17:48 markus Exp $ */ 2 3 /* 4 * Copyright (c) 2004 The DragonFly Project. All rights reserved. 5 * 6 * Copyright (c) 2001 Daniel Hartmeier 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 13 * - Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * - Redistributions in binary form must reproduce the above 16 * copyright notice, this list of conditions and the following 17 * disclaimer in the documentation and/or other materials provided 18 * with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 24 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 27 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 28 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 30 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 * POSSIBILITY OF SUCH DAMAGE. 32 * 33 */ 34 35 #ifndef _NET_PFVAR_H_ 36 #define _NET_PFVAR_H_ 37 38 #include <sys/param.h> 39 #include <sys/types.h> 40 #include <sys/limits.h> 41 #include <sys/ioccom.h> 42 #include <sys/queue.h> 43 #include <sys/tree.h> 44 #include <sys/lock.h> 45 46 #include <net/radix.h> 47 #include <net/if_clone.h> 48 #include <netinet/in.h> 49 #include <netinet/in_pcb.h> 50 51 #ifdef _KERNEL 52 #include <vm/vm_zone.h> 53 #endif 54 55 /* 56 * XXX 57 * If we include <netipsec/keydb.h>, we need _KERNEL definition. 58 * This makes pfctl compilation difficult. 59 */ 60 union sockaddr_union { 61 struct sockaddr sa; 62 struct sockaddr_in sin; 63 struct sockaddr_in6 sin6; 64 }; 65 66 #include <netinet/tcp_fsm.h> 67 68 struct ip; 69 struct ip6_hdr; 70 71 extern struct lwkt_token pf_token; 72 73 #define PF_TCPS_PROXY_SRC ((TCP_NSTATES)+0) 74 #define PF_TCPS_PROXY_DST ((TCP_NSTATES)+1) 75 76 77 #define RTLABEL_LEN 32 78 #define IFG_ALL "all" /* group contains all interfaces */ 79 #define BPF_DIRECTION_OUT (1<<1) 80 #define PWAIT 0 81 #define RT_NUMFIBS 1 82 #define ALTQ_IS_ENABLED(ifq) ((ifq)->altq_flags & ALTQF_ENABLED) 83 84 85 #define PF_MD5_DIGEST_LENGTH 16 86 #ifdef MD5_DIGEST_LENGTH 87 #if PF_MD5_DIGEST_LENGTH != MD5_DIGEST_LENGTH 88 #error 89 #endif 90 #endif 91 92 enum { PF_INOUT, PF_IN, PF_OUT }; 93 enum { PF_LAN_EXT, PF_EXT_GWY, PF_ID }; 94 enum { PF_PASS, PF_DROP, PF_SCRUB, PF_NOSCRUB, PF_NAT, PF_NONAT, 95 PF_BINAT, PF_NOBINAT, PF_RDR, PF_NORDR, PF_SYNPROXY_DROP }; 96 enum { PF_RULESET_SCRUB, PF_RULESET_FILTER, PF_RULESET_NAT, 97 PF_RULESET_BINAT, PF_RULESET_RDR, PF_RULESET_MAX }; 98 enum { PF_OP_NONE, PF_OP_IRG, PF_OP_EQ, PF_OP_NE, PF_OP_LT, 99 PF_OP_LE, PF_OP_GT, PF_OP_GE, PF_OP_XRG, PF_OP_RRG }; 100 enum { PF_DEBUG_NONE, PF_DEBUG_URGENT, PF_DEBUG_MISC, PF_DEBUG_NOISY }; 101 enum { PF_CHANGE_NONE, PF_CHANGE_ADD_HEAD, PF_CHANGE_ADD_TAIL, 102 PF_CHANGE_ADD_BEFORE, PF_CHANGE_ADD_AFTER, 103 PF_CHANGE_REMOVE, PF_CHANGE_GET_TICKET }; 104 enum { PF_GET_NONE, PF_GET_CLR_CNTR }; 105 106 /* 107 * Note about PFTM_*: real indices into pf_rule.timeout[] come before 108 * PFTM_MAX, special cases afterwards. See pf_state_expires(). 109 */ 110 enum { PFTM_TCP_FIRST_PACKET, PFTM_TCP_OPENING, PFTM_TCP_ESTABLISHED, 111 PFTM_TCP_CLOSING, PFTM_TCP_FIN_WAIT, PFTM_TCP_CLOSED, 112 PFTM_UDP_FIRST_PACKET, PFTM_UDP_SINGLE, PFTM_UDP_MULTIPLE, 113 PFTM_ICMP_FIRST_PACKET, PFTM_ICMP_ERROR_REPLY, 114 PFTM_OTHER_FIRST_PACKET, PFTM_OTHER_SINGLE, 115 PFTM_OTHER_MULTIPLE, PFTM_FRAG, PFTM_INTERVAL, 116 PFTM_ADAPTIVE_START, PFTM_ADAPTIVE_END, PFTM_SRC_NODE, 117 PFTM_TS_DIFF, PFTM_MAX, PFTM_PURGE, PFTM_UNLINKED, 118 PFTM_UNTIL_PACKET }; 119 120 /* PFTM default values */ 121 #define PFTM_TCP_FIRST_PACKET_VAL 120 /* First TCP packet */ 122 #define PFTM_TCP_OPENING_VAL 30 /* No response yet */ 123 #define PFTM_TCP_ESTABLISHED_VAL 24*60*60/* Established */ 124 #define PFTM_TCP_CLOSING_VAL 15 * 60 /* Half closed */ 125 #define PFTM_TCP_FIN_WAIT_VAL 45 /* Got both FINs */ 126 #define PFTM_TCP_CLOSED_VAL 90 /* Got a RST */ 127 #define PFTM_UDP_FIRST_PACKET_VAL 60 /* First UDP packet */ 128 #define PFTM_UDP_SINGLE_VAL 30 /* Unidirectional */ 129 #define PFTM_UDP_MULTIPLE_VAL 60 /* Bidirectional */ 130 #define PFTM_ICMP_FIRST_PACKET_VAL 20 /* First ICMP packet */ 131 #define PFTM_ICMP_ERROR_REPLY_VAL 10 /* Got error response */ 132 #define PFTM_OTHER_FIRST_PACKET_VAL 60 /* First packet */ 133 #define PFTM_OTHER_SINGLE_VAL 30 /* Unidirectional */ 134 #define PFTM_OTHER_MULTIPLE_VAL 60 /* Bidirectional */ 135 #define PFTM_FRAG_VAL 30 /* Fragment expire */ 136 #define PFTM_INTERVAL_VAL 10 /* Expire interval */ 137 #define PFTM_SRC_NODE_VAL 0 /* Source tracking */ 138 #define PFTM_TS_DIFF_VAL 30 /* Allowed TS diff */ 139 140 enum { PF_NOPFROUTE, PF_FASTROUTE, PF_ROUTETO, PF_DUPTO, PF_REPLYTO }; 141 enum { PF_LIMIT_STATES, PF_LIMIT_SRC_NODES, PF_LIMIT_FRAGS, 142 PF_LIMIT_TABLES, PF_LIMIT_TABLE_ENTRIES, PF_LIMIT_MAX }; 143 #define PF_POOL_IDMASK 0x0f 144 enum { PF_POOL_NONE, PF_POOL_BITMASK, PF_POOL_RANDOM, 145 PF_POOL_SRCHASH, PF_POOL_ROUNDROBIN }; 146 enum { PF_ADDR_ADDRMASK, PF_ADDR_NOROUTE, PF_ADDR_DYNIFTL, 147 PF_ADDR_TABLE, PF_ADDR_RTLABEL, PF_ADDR_URPFFAILED }; 148 #define PF_POOL_TYPEMASK 0x0f 149 #define PF_POOL_STICKYADDR 0x20 150 #define PF_WSCALE_FLAG 0x80 151 #define PF_WSCALE_MASK 0x0f 152 153 #define PF_LOG 0x01 154 #define PF_LOG_ALL 0x02 155 #define PF_LOG_SOCKET_LOOKUP 0x04 156 157 struct pf_addr { 158 union { 159 struct in_addr v4; 160 struct in6_addr v6; 161 u_int8_t addr8[16]; 162 u_int16_t addr16[8]; 163 u_int32_t addr32[4]; 164 } pfa; /* 128-bit address */ 165 #define v4 pfa.v4 166 #define v6 pfa.v6 167 #define addr8 pfa.addr8 168 #define addr16 pfa.addr16 169 #define addr32 pfa.addr32 170 }; 171 172 #define PF_TABLE_NAME_SIZE 32 173 174 #define PFI_AFLAG_NETWORK 0x01 175 #define PFI_AFLAG_BROADCAST 0x02 176 #define PFI_AFLAG_PEER 0x04 177 #define PFI_AFLAG_MODEMASK 0x07 178 #define PFI_AFLAG_NOALIAS 0x08 179 180 struct pf_addr_wrap { 181 union { 182 struct { 183 struct pf_addr addr; 184 struct pf_addr mask; 185 } a; 186 char ifname[IFNAMSIZ]; 187 char tblname[PF_TABLE_NAME_SIZE]; 188 char rtlabelname[RTLABEL_LEN]; 189 u_int32_t rtlabel; 190 } v; 191 union { 192 struct pfi_dynaddr *dyn; 193 struct pfr_ktable *tbl; 194 int dyncnt; 195 int tblcnt; 196 } p; 197 u_int8_t type; /* PF_ADDR_* */ 198 u_int8_t iflags; /* PFI_AFLAG_* */ 199 }; 200 201 #ifdef _KERNEL 202 203 struct pfi_dynaddr { 204 TAILQ_ENTRY(pfi_dynaddr) entry; 205 struct pf_addr pfid_addr4; 206 struct pf_addr pfid_mask4; 207 struct pf_addr pfid_addr6; 208 struct pf_addr pfid_mask6; 209 struct pfr_ktable *pfid_kt; 210 struct pfi_kif *pfid_kif; 211 void *pfid_hook_cookie; 212 int pfid_net; /* mask or 128 */ 213 int pfid_acnt4; /* address count IPv4 */ 214 int pfid_acnt6; /* address count IPv6 */ 215 sa_family_t pfid_af; /* rule af */ 216 u_int8_t pfid_iflags; /* PFI_AFLAG_* */ 217 }; 218 219 /* 220 * Address manipulation macros 221 */ 222 223 /* XXX correct values for zinit? */ 224 #define ZONE_CREATE(var, type, desc) \ 225 var = zinit(desc, sizeof(type), 1, ZONE_DESTROYABLE, 1); \ 226 if (var == NULL) break 227 #define ZONE_DESTROY(a) zdestroy(a) 228 229 #define pool_get(p, f) zalloc(*(p)) 230 #define pool_put(p, o) zfree(*(p), (o)) 231 232 #define NTOHS(x) (x) = ntohs((__uint16_t)(x)) 233 #define HTONS(x) (x) = htons((__uint16_t)(x)) 234 235 #define PF_NAME "pf" 236 237 #define PF_MODVER 1 238 #define PFLOG_MODVER 1 239 #define PFSYNC_MODVER 1 240 241 #define PFLOG_MINVER 1 242 #define PFLOG_PREFVER PFLOG_MODVER 243 #define PFLOG_MAXVER 1 244 #define PFSYNC_MINVER 1 245 #define PFSYNC_PREFVER PFSYNC_MODVER 246 #define PFSYNC_MAXVER 1 247 248 /* prototyped for pf_subr.c */ 249 struct hook_desc { 250 TAILQ_ENTRY(hook_desc) hd_list; 251 void (*hd_fn)(void *); 252 void *hd_arg; 253 }; 254 TAILQ_HEAD(hook_desc_head, hook_desc); 255 256 void *hook_establish(struct hook_desc_head *, int, void (*)(void *), void *); 257 void hook_disestablish(struct hook_desc_head *, void *); 258 void dohooks(struct hook_desc_head *, int); 259 260 #define HOOK_REMOVE 0x01 261 #define HOOK_FREE 0x02 262 263 #ifdef INET 264 #ifndef INET6 265 #define PF_INET_ONLY 266 #endif /* ! INET6 */ 267 #endif /* INET */ 268 269 #ifdef INET6 270 #ifndef INET 271 #define PF_INET6_ONLY 272 #endif /* ! INET */ 273 #endif /* INET6 */ 274 275 #ifdef INET 276 #ifdef INET6 277 #define PF_INET_INET6 278 #endif /* INET6 */ 279 #endif /* INET */ 280 281 #else 282 283 #define PF_INET_INET6 284 285 #endif /* _KERNEL */ 286 287 /* Both IPv4 and IPv6 */ 288 #ifdef PF_INET_INET6 289 290 #define PF_AEQ(a, b, c) \ 291 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \ 292 ((a)->addr32[3] == (b)->addr32[3] && \ 293 (a)->addr32[2] == (b)->addr32[2] && \ 294 (a)->addr32[1] == (b)->addr32[1] && \ 295 (a)->addr32[0] == (b)->addr32[0])) \ 296 297 #define PF_ANEQ(a, b, c) \ 298 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \ 299 ((a)->addr32[3] != (b)->addr32[3] || \ 300 (a)->addr32[2] != (b)->addr32[2] || \ 301 (a)->addr32[1] != (b)->addr32[1] || \ 302 (a)->addr32[0] != (b)->addr32[0])) \ 303 304 #define PF_AZERO(a, c) \ 305 ((c == AF_INET && !(a)->addr32[0]) || \ 306 (!(a)->addr32[0] && !(a)->addr32[1] && \ 307 !(a)->addr32[2] && !(a)->addr32[3] )) \ 308 309 #define PF_MATCHA(n, a, m, b, f) \ 310 pf_match_addr(n, a, m, b, f) 311 312 #define PF_ACPY(a, b, f) \ 313 pf_addrcpy(a, b, f) 314 315 #define PF_AINC(a, f) \ 316 pf_addr_inc(a, f) 317 318 #define PF_POOLMASK(a, b, c, d, f) \ 319 pf_poolmask(a, b, c, d, f) 320 321 #else 322 323 /* Just IPv6 */ 324 325 #ifdef PF_INET6_ONLY 326 327 #define PF_AEQ(a, b, c) \ 328 ((a)->addr32[3] == (b)->addr32[3] && \ 329 (a)->addr32[2] == (b)->addr32[2] && \ 330 (a)->addr32[1] == (b)->addr32[1] && \ 331 (a)->addr32[0] == (b)->addr32[0]) \ 332 333 #define PF_ANEQ(a, b, c) \ 334 ((a)->addr32[3] != (b)->addr32[3] || \ 335 (a)->addr32[2] != (b)->addr32[2] || \ 336 (a)->addr32[1] != (b)->addr32[1] || \ 337 (a)->addr32[0] != (b)->addr32[0]) \ 338 339 #define PF_AZERO(a, c) \ 340 (!(a)->addr32[0] && \ 341 !(a)->addr32[1] && \ 342 !(a)->addr32[2] && \ 343 !(a)->addr32[3] ) \ 344 345 #define PF_MATCHA(n, a, m, b, f) \ 346 pf_match_addr(n, a, m, b, f) 347 348 #define PF_ACPY(a, b, f) \ 349 pf_addrcpy(a, b, f) 350 351 #define PF_AINC(a, f) \ 352 pf_addr_inc(a, f) 353 354 #define PF_POOLMASK(a, b, c, d, f) \ 355 pf_poolmask(a, b, c, d, f) 356 357 #else 358 359 /* Just IPv4 */ 360 #ifdef PF_INET_ONLY 361 362 #define PF_AEQ(a, b, c) \ 363 ((a)->addr32[0] == (b)->addr32[0]) 364 365 #define PF_ANEQ(a, b, c) \ 366 ((a)->addr32[0] != (b)->addr32[0]) 367 368 #define PF_AZERO(a, c) \ 369 (!(a)->addr32[0]) 370 371 #define PF_MATCHA(n, a, m, b, f) \ 372 pf_match_addr(n, a, m, b, f) 373 374 #define PF_ACPY(a, b, f) \ 375 (a)->v4.s_addr = (b)->v4.s_addr 376 377 #define PF_AINC(a, f) \ 378 do { \ 379 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \ 380 } while (0) 381 382 #define PF_POOLMASK(a, b, c, d, f) \ 383 do { \ 384 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \ 385 (((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \ 386 } while (0) 387 388 #endif /* PF_INET_ONLY */ 389 #endif /* PF_INET6_ONLY */ 390 #endif /* PF_INET_INET6 */ 391 392 #define PF_MISMATCHAW(aw, x, af, neg, ifp) \ 393 ( \ 394 (((aw)->type == PF_ADDR_NOROUTE && \ 395 pf_routable((x), (af), NULL)) || \ 396 (((aw)->type == PF_ADDR_URPFFAILED && (ifp) != NULL && \ 397 pf_routable((x), (af), (ifp))) || \ 398 ((aw)->type == PF_ADDR_RTLABEL && \ 399 !pf_rtlabel_match((x), (af), (aw))) || \ 400 ((aw)->type == PF_ADDR_TABLE && \ 401 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \ 402 ((aw)->type == PF_ADDR_DYNIFTL && \ 403 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \ 404 ((aw)->type == PF_ADDR_ADDRMASK && \ 405 !PF_AZERO(&(aw)->v.a.mask, (af)) && \ 406 !PF_MATCHA(0, &(aw)->v.a.addr, \ 407 &(aw)->v.a.mask, (x), (af))))) != \ 408 (neg) \ 409 ) 410 411 412 struct pf_rule_uid { 413 uid_t uid[2]; 414 u_int8_t op; 415 }; 416 417 struct pf_rule_gid { 418 uid_t gid[2]; 419 u_int8_t op; 420 }; 421 422 struct pf_rule_addr { 423 struct pf_addr_wrap addr; 424 u_int16_t port[2]; 425 u_int8_t neg; 426 u_int8_t port_op; 427 }; 428 429 struct pf_pooladdr { 430 struct pf_addr_wrap addr; 431 TAILQ_ENTRY(pf_pooladdr) entries; 432 char ifname[IFNAMSIZ]; 433 struct pfi_kif *kif; 434 }; 435 436 TAILQ_HEAD(pf_palist, pf_pooladdr); 437 438 struct pf_poolhashkey { 439 union { 440 u_int8_t key8[16]; 441 u_int16_t key16[8]; 442 u_int32_t key32[4]; 443 } pfk; /* 128-bit hash key */ 444 #define key8 pfk.key8 445 #define key16 pfk.key16 446 #define key32 pfk.key32 447 }; 448 449 struct pf_pool { 450 struct pf_palist list; 451 struct pf_pooladdr *cur; 452 struct pf_poolhashkey key; 453 struct pf_addr counter; 454 int tblidx; 455 u_int16_t proxy_port[2]; 456 u_int8_t port_op; 457 u_int8_t opts; 458 }; 459 460 461 /* A packed Operating System description for fingerprinting */ 462 typedef u_int32_t pf_osfp_t; 463 #define PF_OSFP_ANY ((pf_osfp_t)0) 464 #define PF_OSFP_UNKNOWN ((pf_osfp_t)-1) 465 #define PF_OSFP_NOMATCH ((pf_osfp_t)-2) 466 467 struct pf_osfp_entry { 468 SLIST_ENTRY(pf_osfp_entry) fp_entry; 469 pf_osfp_t fp_os; 470 int fp_enflags; 471 #define PF_OSFP_EXPANDED 0x001 /* expanded entry */ 472 #define PF_OSFP_GENERIC 0x002 /* generic signature */ 473 #define PF_OSFP_NODETAIL 0x004 /* no p0f details */ 474 #define PF_OSFP_LEN 32 475 char fp_class_nm[PF_OSFP_LEN]; 476 char fp_version_nm[PF_OSFP_LEN]; 477 char fp_subtype_nm[PF_OSFP_LEN]; 478 }; 479 #define PF_OSFP_ENTRY_EQ(a, b) \ 480 ((a)->fp_os == (b)->fp_os && \ 481 memcmp((a)->fp_class_nm, (b)->fp_class_nm, PF_OSFP_LEN) == 0 && \ 482 memcmp((a)->fp_version_nm, (b)->fp_version_nm, PF_OSFP_LEN) == 0 && \ 483 memcmp((a)->fp_subtype_nm, (b)->fp_subtype_nm, PF_OSFP_LEN) == 0) 484 485 /* handle pf_osfp_t packing */ 486 #define _FP_RESERVED_BIT 1 /* For the special negative #defines */ 487 #define _FP_UNUSED_BITS 1 488 #define _FP_CLASS_BITS 10 /* OS Class (Windows, Linux) */ 489 #define _FP_VERSION_BITS 10 /* OS version (95, 98, NT, 2.4.54, 3.2) */ 490 #define _FP_SUBTYPE_BITS 10 /* patch level (NT SP4, SP3, ECN patch) */ 491 #define PF_OSFP_UNPACK(osfp, class, version, subtype) do { \ 492 (class) = ((osfp) >> (_FP_VERSION_BITS+_FP_SUBTYPE_BITS)) & \ 493 ((1 << _FP_CLASS_BITS) - 1); \ 494 (version) = ((osfp) >> _FP_SUBTYPE_BITS) & \ 495 ((1 << _FP_VERSION_BITS) - 1);\ 496 (subtype) = (osfp) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 497 } while(0) 498 #define PF_OSFP_PACK(osfp, class, version, subtype) do { \ 499 (osfp) = ((class) & ((1 << _FP_CLASS_BITS) - 1)) << (_FP_VERSION_BITS \ 500 + _FP_SUBTYPE_BITS); \ 501 (osfp) |= ((version) & ((1 << _FP_VERSION_BITS) - 1)) << \ 502 _FP_SUBTYPE_BITS; \ 503 (osfp) |= (subtype) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 504 } while(0) 505 506 /* the fingerprint of an OSes TCP SYN packet */ 507 typedef u_int64_t pf_tcpopts_t; 508 struct pf_os_fingerprint { 509 SLIST_HEAD(pf_osfp_enlist, pf_osfp_entry) fp_oses; /* list of matches */ 510 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 511 u_int16_t fp_wsize; /* TCP window size */ 512 u_int16_t fp_psize; /* ip->ip_len */ 513 u_int16_t fp_mss; /* TCP MSS */ 514 u_int16_t fp_flags; 515 #define PF_OSFP_WSIZE_MOD 0x0001 /* Window modulus */ 516 #define PF_OSFP_WSIZE_DC 0x0002 /* Window don't care */ 517 #define PF_OSFP_WSIZE_MSS 0x0004 /* Window multiple of MSS */ 518 #define PF_OSFP_WSIZE_MTU 0x0008 /* Window multiple of MTU */ 519 #define PF_OSFP_PSIZE_MOD 0x0010 /* packet size modulus */ 520 #define PF_OSFP_PSIZE_DC 0x0020 /* packet size don't care */ 521 #define PF_OSFP_WSCALE 0x0040 /* TCP window scaling */ 522 #define PF_OSFP_WSCALE_MOD 0x0080 /* TCP window scale modulus */ 523 #define PF_OSFP_WSCALE_DC 0x0100 /* TCP window scale dont-care */ 524 #define PF_OSFP_MSS 0x0200 /* TCP MSS */ 525 #define PF_OSFP_MSS_MOD 0x0400 /* TCP MSS modulus */ 526 #define PF_OSFP_MSS_DC 0x0800 /* TCP MSS dont-care */ 527 #define PF_OSFP_DF 0x1000 /* IPv4 don't fragment bit */ 528 #define PF_OSFP_TS0 0x2000 /* Zero timestamp */ 529 #define PF_OSFP_INET6 0x4000 /* IPv6 */ 530 u_int8_t fp_optcnt; /* TCP option count */ 531 u_int8_t fp_wscale; /* TCP window scaling */ 532 u_int8_t fp_ttl; /* IPv4 TTL */ 533 #define PF_OSFP_MAXTTL_OFFSET 40 534 /* TCP options packing */ 535 #define PF_OSFP_TCPOPT_NOP 0x0 /* TCP NOP option */ 536 #define PF_OSFP_TCPOPT_WSCALE 0x1 /* TCP window scaling option */ 537 #define PF_OSFP_TCPOPT_MSS 0x2 /* TCP max segment size opt */ 538 #define PF_OSFP_TCPOPT_SACK 0x3 /* TCP SACK OK option */ 539 #define PF_OSFP_TCPOPT_TS 0x4 /* TCP timestamp option */ 540 #define PF_OSFP_TCPOPT_BITS 3 /* bits used by each option */ 541 #define PF_OSFP_MAX_OPTS \ 542 (sizeof(((struct pf_os_fingerprint *)0)->fp_tcpopts) * 8) \ 543 / PF_OSFP_TCPOPT_BITS 544 545 SLIST_ENTRY(pf_os_fingerprint) fp_next; 546 }; 547 548 struct pf_osfp_ioctl { 549 struct pf_osfp_entry fp_os; 550 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 551 u_int16_t fp_wsize; /* TCP window size */ 552 u_int16_t fp_psize; /* ip->ip_len */ 553 u_int16_t fp_mss; /* TCP MSS */ 554 u_int16_t fp_flags; 555 u_int8_t fp_optcnt; /* TCP option count */ 556 u_int8_t fp_wscale; /* TCP window scaling */ 557 u_int8_t fp_ttl; /* IPv4 TTL */ 558 559 int fp_getnum; /* DIOCOSFPGET number */ 560 }; 561 562 563 union pf_rule_ptr { 564 struct pf_rule *ptr; 565 u_int32_t nr; 566 }; 567 568 #define PF_ANCHOR_NAME_SIZE 64 569 570 struct pf_rule { 571 struct pf_rule_addr src; 572 struct pf_rule_addr dst; 573 #define PF_SKIP_IFP 0 574 #define PF_SKIP_DIR 1 575 #define PF_SKIP_AF 2 576 #define PF_SKIP_PROTO 3 577 #define PF_SKIP_SRC_ADDR 4 578 #define PF_SKIP_SRC_PORT 5 579 #define PF_SKIP_DST_ADDR 6 580 #define PF_SKIP_DST_PORT 7 581 #define PF_SKIP_COUNT 8 582 union pf_rule_ptr skip[PF_SKIP_COUNT]; 583 #define PF_RULE_LABEL_SIZE 64 584 char label[PF_RULE_LABEL_SIZE]; 585 #define PF_QNAME_SIZE 64 586 char ifname[IFNAMSIZ]; 587 char qname[PF_QNAME_SIZE]; 588 char pqname[PF_QNAME_SIZE]; 589 #define PF_TAG_NAME_SIZE 64 590 char tagname[PF_TAG_NAME_SIZE]; 591 char match_tagname[PF_TAG_NAME_SIZE]; 592 593 char overload_tblname[PF_TABLE_NAME_SIZE]; 594 595 TAILQ_ENTRY(pf_rule) entries; 596 struct pf_pool rpool; 597 598 u_int64_t evaluations; 599 u_int64_t packets[2]; 600 u_int64_t bytes[2]; 601 602 struct pfi_kif *kif; 603 struct pf_anchor *anchor; 604 struct pfr_ktable *overload_tbl; 605 606 pf_osfp_t os_fingerprint; 607 608 int rtableid; 609 u_int32_t timeout[PFTM_MAX]; 610 u_int32_t states; 611 u_int32_t max_states; 612 u_int32_t src_nodes; 613 u_int32_t max_src_nodes; 614 u_int32_t max_src_states; 615 u_int32_t max_src_conn; 616 struct { 617 u_int32_t limit; 618 u_int32_t seconds; 619 } max_src_conn_rate; 620 u_int32_t qid; 621 u_int32_t pqid; 622 u_int32_t rt_listid; 623 u_int32_t nr; 624 u_int32_t prob; 625 uid_t cuid; 626 pid_t cpid; 627 628 u_int16_t return_icmp; 629 u_int16_t return_icmp6; 630 u_int16_t max_mss; 631 u_int16_t tag; 632 u_int16_t match_tag; 633 634 struct pf_rule_uid uid; 635 struct pf_rule_gid gid; 636 637 u_int32_t rule_flag; 638 u_int8_t action; 639 u_int8_t direction; 640 u_int8_t log; 641 u_int8_t logif; 642 u_int8_t quick; 643 u_int8_t ifnot; 644 u_int8_t match_tag_not; 645 u_int8_t natpass; 646 647 #define PF_STATE_NORMAL 0x1 648 #define PF_STATE_MODULATE 0x2 649 #define PF_STATE_SYNPROXY 0x3 650 u_int8_t keep_state; 651 sa_family_t af; 652 u_int8_t proto; 653 u_int8_t type; 654 u_int8_t code; 655 u_int8_t flags; 656 u_int8_t flagset; 657 u_int8_t min_ttl; 658 u_int8_t allow_opts; 659 u_int8_t rt; 660 u_int8_t return_ttl; 661 u_int8_t tos; 662 u_int8_t anchor_relative; 663 u_int8_t anchor_wildcard; 664 665 #define PF_FLUSH 0x01 666 #define PF_FLUSH_GLOBAL 0x02 667 u_int8_t flush; 668 669 #define PF_PICKUPS_UNSPECIFIED 0 670 #define PF_PICKUPS_DISABLED 1 671 #define PF_PICKUPS_HASHONLY 2 672 #define PF_PICKUPS_ENABLED 3 673 u_int8_t pickup_mode; 674 u_int8_t unused01; /* available for use */ 675 }; 676 677 /* rule flags */ 678 #define PFRULE_DROP 0x0000 679 #define PFRULE_RETURNRST 0x0001 680 #define PFRULE_FRAGMENT 0x0002 681 #define PFRULE_RETURNICMP 0x0004 682 #define PFRULE_RETURN 0x0008 683 #define PFRULE_NOSYNC 0x0010 684 #define PFRULE_SRCTRACK 0x0020 /* track source states */ 685 #define PFRULE_RULESRCTRACK 0x0040 /* per rule */ 686 687 /* scrub flags */ 688 #define PFRULE_NODF 0x0100 689 #define PFRULE_FRAGCROP 0x0200 /* non-buffering frag cache */ 690 #define PFRULE_FRAGDROP 0x0400 /* drop funny fragments */ 691 #define PFRULE_RANDOMID 0x0800 692 #define PFRULE_REASSEMBLE_TCP 0x1000 693 694 /* rule flags again */ 695 #define PFRULE_IFBOUND 0x00010000 /* if-bound */ 696 697 #define PFSTATE_HIWAT 10000 /* default state table size */ 698 #define PFSTATE_ADAPT_START 6000 /* default adaptive timeout start */ 699 #define PFSTATE_ADAPT_END 12000 /* default adaptive timeout end */ 700 701 702 struct pf_threshold { 703 u_int32_t limit; 704 #define PF_THRESHOLD_MULT 1000 705 #define PF_THRESHOLD_MAX 0xffffffff / PF_THRESHOLD_MULT 706 u_int32_t seconds; 707 u_int32_t count; 708 u_int32_t last; 709 }; 710 711 struct pf_src_node { 712 RB_ENTRY(pf_src_node) entry; 713 struct pf_addr addr; 714 struct pf_addr raddr; 715 union pf_rule_ptr rule; 716 struct pfi_kif *kif; 717 u_int64_t bytes[2]; 718 u_int64_t packets[2]; 719 u_int32_t states; 720 u_int32_t conn; 721 struct pf_threshold conn_rate; 722 u_int32_t creation; 723 u_int32_t expire; 724 sa_family_t af; 725 u_int8_t ruletype; 726 }; 727 728 #define PFSNODE_HIWAT 10000 /* default source node table size */ 729 730 struct pf_state_scrub { 731 struct timeval pfss_last; /* time received last packet */ 732 u_int32_t pfss_tsecr; /* last echoed timestamp */ 733 u_int32_t pfss_tsval; /* largest timestamp */ 734 u_int32_t pfss_tsval0; /* original timestamp */ 735 u_int16_t pfss_flags; 736 #define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */ 737 #define PFSS_PAWS 0x0010 /* stricter PAWS checks */ 738 #define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */ 739 #define PFSS_DATA_TS 0x0040 /* timestamp on data packets */ 740 #define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */ 741 u_int8_t pfss_ttl; /* stashed TTL */ 742 u_int8_t pad; 743 u_int32_t pfss_ts_mod; /* timestamp modulation */ 744 }; 745 746 struct pf_state_host { 747 struct pf_addr addr; 748 u_int16_t port; 749 u_int16_t pad; 750 }; 751 752 struct pf_state_peer { 753 u_int32_t seqlo; /* Max sequence number sent */ 754 u_int32_t seqhi; /* Max the other end ACKd + win */ 755 u_int32_t seqdiff; /* Sequence number modulator */ 756 u_int16_t max_win; /* largest window (pre scaling) */ 757 u_int8_t state; /* active state level */ 758 u_int8_t wscale; /* window scaling factor */ 759 u_int16_t mss; /* Maximum segment size option */ 760 u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */ 761 struct pf_state_scrub *scrub; /* state is scrubbed */ 762 u_int8_t pad[3]; 763 }; 764 765 TAILQ_HEAD(pf_state_queue, pf_state); 766 767 /* keep synced with struct pf_state_key, used in RB_FIND */ 768 struct pf_state_key_cmp { 769 struct pf_state_host lan; 770 struct pf_state_host gwy; 771 struct pf_state_host ext; 772 sa_family_t af; 773 u_int8_t proto; 774 u_int8_t direction; 775 u_int8_t pad; 776 }; 777 778 TAILQ_HEAD(pf_statelist, pf_state); 779 780 struct pf_state_key { 781 struct pf_state_host lan; 782 struct pf_state_host gwy; 783 struct pf_state_host ext; 784 sa_family_t af; 785 u_int8_t proto; 786 u_int8_t direction; 787 u_int8_t pad; 788 789 RB_ENTRY(pf_state_key) entry_lan_ext; 790 RB_ENTRY(pf_state_key) entry_ext_gwy; 791 struct pf_statelist states; 792 u_short refcnt; /* same size as if_index */ 793 }; 794 795 796 /* keep synced with struct pf_state, used in RB_FIND */ 797 struct pf_state_cmp { 798 u_int64_t id; 799 u_int32_t creatorid; 800 u_int32_t pad; 801 }; 802 803 struct pf_state { 804 u_int64_t id; 805 u_int32_t creatorid; 806 u_int32_t pad; 807 808 TAILQ_ENTRY(pf_state) entry_list; 809 TAILQ_ENTRY(pf_state) next; 810 RB_ENTRY(pf_state) entry_id; 811 struct pf_state_peer src; 812 struct pf_state_peer dst; 813 union pf_rule_ptr rule; 814 union pf_rule_ptr anchor; 815 union pf_rule_ptr nat_rule; 816 struct pf_addr rt_addr; 817 struct pf_state_key *state_key; 818 struct pfi_kif *kif; 819 struct pfi_kif *rt_kif; 820 struct pf_src_node *src_node; 821 struct pf_src_node *nat_src_node; 822 u_int64_t packets[2]; 823 u_int64_t bytes[2]; 824 u_int32_t hash; 825 u_int32_t creation; 826 u_int32_t expire; 827 u_int32_t pfsync_time; 828 u_int16_t tag; 829 u_int8_t log; 830 u_int8_t allow_opts; 831 u_int8_t timeout; 832 u_int8_t sync_flags; 833 u_int8_t pickup_mode; 834 #define PFSTATE_NOSYNC 0x01 835 #define PFSTATE_FROMSYNC 0x02 836 #define PFSTATE_STALE 0x04 837 }; 838 839 /* 840 * Unified state structures for pulling states out of the kernel 841 * used by pfsync(4) and the pf(4) ioctl. 842 */ 843 struct pfsync_state_scrub { 844 u_int16_t pfss_flags; 845 u_int8_t pfss_ttl; /* stashed TTL */ 846 #define PFSYNC_SCRUB_FLAG_VALID 0x01 847 u_int8_t scrub_flag; 848 u_int32_t pfss_ts_mod; /* timestamp modulation */ 849 }; 850 851 struct pfsync_state_host { 852 struct pf_addr addr; 853 u_int16_t port; 854 u_int16_t pad[3]; 855 }; 856 857 struct pfsync_state_peer { 858 struct pfsync_state_scrub scrub; /* state is scrubbed */ 859 u_int32_t seqlo; /* Max sequence number sent */ 860 u_int32_t seqhi; /* Max the other end ACKd + win */ 861 u_int32_t seqdiff; /* Sequence number modulator */ 862 u_int16_t max_win; /* largest window (pre scaling) */ 863 u_int16_t mss; /* Maximum segment size option */ 864 u_int8_t state; /* active state level */ 865 u_int8_t wscale; /* window scaling factor */ 866 u_int8_t pad[6]; 867 }; 868 869 struct pfsync_state { 870 u_int32_t id[2]; 871 char ifname[IFNAMSIZ]; 872 struct pfsync_state_host lan; 873 struct pfsync_state_host gwy; 874 struct pfsync_state_host ext; 875 struct pfsync_state_peer src; 876 struct pfsync_state_peer dst; 877 struct pf_addr rt_addr; 878 u_int32_t rule; 879 u_int32_t anchor; 880 u_int32_t nat_rule; 881 u_int32_t creation; 882 u_int32_t expire; 883 u_int32_t packets[2][2]; 884 u_int32_t bytes[2][2]; 885 u_int32_t creatorid; 886 sa_family_t af; 887 u_int8_t proto; 888 u_int8_t direction; 889 u_int8_t log; 890 u_int8_t allow_opts; 891 u_int8_t timeout; 892 u_int8_t sync_flags; 893 u_int8_t updates; 894 }; 895 896 #define PFSYNC_FLAG_COMPRESS 0x01 897 #define PFSYNC_FLAG_STALE 0x02 898 #define PFSYNC_FLAG_SRCNODE 0x04 899 #define PFSYNC_FLAG_NATSRCNODE 0x08 900 #define PFSTATE_GOT_SYN_MASK (PFSTATE_GOT_SYN1|PFSTATE_GOT_SYN2) 901 #define PFSTATE_GOT_SYN1 0x04 /* got SYN in one direction */ 902 #define PFSTATE_GOT_SYN2 0x08 /* got SYN in the other direction */ 903 904 /* for copies to/from userland via pf_ioctl() */ 905 #define pf_state_peer_to_pfsync(s,d) do { \ 906 (d)->seqlo = (s)->seqlo; \ 907 (d)->seqhi = (s)->seqhi; \ 908 (d)->seqdiff = (s)->seqdiff; \ 909 (d)->max_win = (s)->max_win; \ 910 (d)->mss = (s)->mss; \ 911 (d)->state = (s)->state; \ 912 (d)->wscale = (s)->wscale; \ 913 if ((s)->scrub) { \ 914 (d)->scrub.pfss_flags = \ 915 (s)->scrub->pfss_flags & PFSS_TIMESTAMP; \ 916 (d)->scrub.pfss_ttl = (s)->scrub->pfss_ttl; \ 917 (d)->scrub.pfss_ts_mod = (s)->scrub->pfss_ts_mod; \ 918 (d)->scrub.scrub_flag = PFSYNC_SCRUB_FLAG_VALID; \ 919 } \ 920 } while (0) 921 922 #define pf_state_peer_from_pfsync(s,d) do { \ 923 (d)->seqlo = (s)->seqlo; \ 924 (d)->seqhi = (s)->seqhi; \ 925 (d)->seqdiff = (s)->seqdiff; \ 926 (d)->max_win = (s)->max_win; \ 927 (d)->mss = ntohs((s)->mss); \ 928 (d)->state = (s)->state; \ 929 (d)->wscale = (s)->wscale; \ 930 if ((s)->scrub.scrub_flag == PFSYNC_SCRUB_FLAG_VALID && \ 931 (d)->scrub != NULL) { \ 932 (d)->scrub->pfss_flags = \ 933 ntohs((s)->scrub.pfss_flags) & PFSS_TIMESTAMP; \ 934 (d)->scrub->pfss_ttl = (s)->scrub.pfss_ttl; \ 935 (d)->scrub->pfss_ts_mod = (s)->scrub.pfss_ts_mod; \ 936 } \ 937 } while (0) 938 939 #define pf_state_counter_to_pfsync(s,d) do { \ 940 d[0] = (s>>32)&0xffffffff; \ 941 d[1] = s&0xffffffff; \ 942 } while (0) 943 944 #define pf_state_counter_from_pfsync(s) \ 945 (((u_int64_t)(s[0])<<32) | (u_int64_t)(s[1])) 946 947 948 949 TAILQ_HEAD(pf_rulequeue, pf_rule); 950 951 struct pf_anchor; 952 953 struct pf_ruleset { 954 struct { 955 struct pf_rulequeue queues[2]; 956 struct { 957 struct pf_rulequeue *ptr; 958 struct pf_rule **ptr_array; 959 u_int32_t rcount; 960 u_int32_t ticket; 961 int open; 962 } active, inactive; 963 } rules[PF_RULESET_MAX]; 964 struct pf_anchor *anchor; 965 u_int32_t tticket; 966 int tables; 967 int topen; 968 }; 969 970 RB_HEAD(pf_anchor_global, pf_anchor); 971 RB_HEAD(pf_anchor_node, pf_anchor); 972 struct pf_anchor { 973 RB_ENTRY(pf_anchor) entry_global; 974 RB_ENTRY(pf_anchor) entry_node; 975 struct pf_anchor *parent; 976 struct pf_anchor_node children; 977 char name[PF_ANCHOR_NAME_SIZE]; 978 char path[MAXPATHLEN]; 979 struct pf_ruleset ruleset; 980 int refcnt; /* anchor rules */ 981 int match; 982 }; 983 RB_PROTOTYPE(pf_anchor_global, pf_anchor, entry_global, pf_anchor_compare); 984 RB_PROTOTYPE(pf_anchor_node, pf_anchor, entry_node, pf_anchor_compare); 985 986 #define PF_RESERVED_ANCHOR "_pf" 987 988 #define PFR_TFLAG_PERSIST 0x00000001 989 #define PFR_TFLAG_CONST 0x00000002 990 #define PFR_TFLAG_ACTIVE 0x00000004 991 #define PFR_TFLAG_INACTIVE 0x00000008 992 #define PFR_TFLAG_REFERENCED 0x00000010 993 #define PFR_TFLAG_REFDANCHOR 0x00000020 994 #define PFR_TFLAG_USRMASK 0x00000003 995 #define PFR_TFLAG_SETMASK 0x0000003C 996 #define PFR_TFLAG_ALLMASK 0x0000003F 997 998 struct pfr_table { 999 char pfrt_anchor[MAXPATHLEN]; 1000 char pfrt_name[PF_TABLE_NAME_SIZE]; 1001 u_int32_t pfrt_flags; 1002 u_int8_t pfrt_fback; 1003 }; 1004 1005 enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED, 1006 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE, 1007 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_MAX }; 1008 1009 struct pfr_addr { 1010 union { 1011 struct in_addr _pfra_ip4addr; 1012 struct in6_addr _pfra_ip6addr; 1013 } pfra_u; 1014 u_int8_t pfra_af; 1015 u_int8_t pfra_net; 1016 u_int8_t pfra_not; 1017 u_int8_t pfra_fback; 1018 }; 1019 #define pfra_ip4addr pfra_u._pfra_ip4addr 1020 #define pfra_ip6addr pfra_u._pfra_ip6addr 1021 1022 enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX }; 1023 enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX }; 1024 #define PFR_OP_XPASS PFR_OP_ADDR_MAX 1025 1026 struct pfr_astats { 1027 struct pfr_addr pfras_a; 1028 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1029 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1030 long pfras_tzero; 1031 }; 1032 1033 enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX }; 1034 1035 struct pfr_tstats { 1036 struct pfr_table pfrts_t; 1037 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1038 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1039 u_int64_t pfrts_match; 1040 u_int64_t pfrts_nomatch; 1041 long pfrts_tzero; 1042 int pfrts_cnt; 1043 int pfrts_refcnt[PFR_REFCNT_MAX]; 1044 }; 1045 #define pfrts_name pfrts_t.pfrt_name 1046 #define pfrts_flags pfrts_t.pfrt_flags 1047 1048 SLIST_HEAD(pfr_kentryworkq, pfr_kentry); 1049 struct pfr_kentry { 1050 struct radix_node pfrke_node[2]; 1051 union sockaddr_union pfrke_sa; 1052 u_int64_t pfrke_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1053 u_int64_t pfrke_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1054 SLIST_ENTRY(pfr_kentry) pfrke_workq; 1055 long pfrke_tzero; 1056 u_int8_t pfrke_af; 1057 u_int8_t pfrke_net; 1058 u_int8_t pfrke_not; 1059 u_int8_t pfrke_mark; 1060 u_int8_t pfrke_intrpool; 1061 }; 1062 1063 SLIST_HEAD(pfr_ktableworkq, pfr_ktable); 1064 RB_HEAD(pfr_ktablehead, pfr_ktable); 1065 struct pfr_ktable { 1066 struct pfr_tstats pfrkt_ts; 1067 RB_ENTRY(pfr_ktable) pfrkt_tree; 1068 SLIST_ENTRY(pfr_ktable) pfrkt_workq; 1069 struct radix_node_head *pfrkt_ip4; 1070 struct radix_node_head *pfrkt_ip6; 1071 struct pfr_ktable *pfrkt_shadow; 1072 struct pfr_ktable *pfrkt_root; 1073 struct pf_ruleset *pfrkt_rs; 1074 long pfrkt_larg; 1075 int pfrkt_nflags; 1076 }; 1077 #define pfrkt_t pfrkt_ts.pfrts_t 1078 #define pfrkt_name pfrkt_t.pfrt_name 1079 #define pfrkt_anchor pfrkt_t.pfrt_anchor 1080 #define pfrkt_ruleset pfrkt_t.pfrt_ruleset 1081 #define pfrkt_flags pfrkt_t.pfrt_flags 1082 #define pfrkt_cnt pfrkt_ts.pfrts_cnt 1083 #define pfrkt_refcnt pfrkt_ts.pfrts_refcnt 1084 #define pfrkt_packets pfrkt_ts.pfrts_packets 1085 #define pfrkt_bytes pfrkt_ts.pfrts_bytes 1086 #define pfrkt_match pfrkt_ts.pfrts_match 1087 #define pfrkt_nomatch pfrkt_ts.pfrts_nomatch 1088 #define pfrkt_tzero pfrkt_ts.pfrts_tzero 1089 1090 RB_HEAD(pf_state_tree_lan_ext, pf_state_key); 1091 RB_PROTOTYPE(pf_state_tree_lan_ext, pf_state_key, 1092 entry_lan_ext, pf_state_compare_lan_ext); 1093 1094 RB_HEAD(pf_state_tree_ext_gwy, pf_state_key); 1095 RB_PROTOTYPE(pf_state_tree_ext_gwy, pf_state_key, 1096 entry_ext_gwy, pf_state_compare_ext_gwy); 1097 1098 struct pfi_if { 1099 char pfif_name[IFNAMSIZ]; 1100 u_int64_t pfif_packets[2][2][2]; 1101 u_int64_t pfif_bytes[2][2][2]; 1102 u_int64_t pfif_addcnt; 1103 u_int64_t pfif_delcnt; 1104 long pfif_tzero; 1105 int pfif_states; 1106 int pfif_rules; 1107 int pfif_flags; 1108 }; 1109 1110 TAILQ_HEAD(pfi_grouphead, pfi_kif); 1111 TAILQ_HEAD(pfi_statehead, pfi_kif); 1112 RB_HEAD(pfi_ifhead, pfi_kif); 1113 1114 /* state tables */ 1115 extern struct pf_state_tree_lan_ext pf_statetbl_lan_ext; 1116 extern struct pf_state_tree_ext_gwy pf_statetbl_ext_gwy; 1117 1118 /* keep synced with pfi_kif, used in RB_FIND */ 1119 struct pfi_kif_cmp { 1120 char pfik_ifname[IFNAMSIZ]; 1121 }; 1122 1123 struct pfi_kif { 1124 struct pfi_if pfik_if; 1125 RB_ENTRY(pfi_kif) pfik_tree; 1126 u_int64_t pfik_packets[2][2][2]; 1127 u_int64_t pfik_bytes[2][2][2]; 1128 u_int32_t pfik_tzero; 1129 int pfik_flags; 1130 struct hook_desc_head *pfik_ah_head; 1131 void *pfik_ah_cookie; 1132 struct pfi_kif *pfik_parent; 1133 struct ifnet *pfik_ifp; 1134 struct ifg_group *pfik_group; 1135 int pfik_states; 1136 int pfik_rules; 1137 TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs; 1138 }; 1139 #define pfik_name pfik_if.pfif_name 1140 #define pfik_packets pfik_if.pfif_packets 1141 #define pfik_bytes pfik_if.pfif_bytes 1142 #define pfik_tzero pfik_if.pfif_tzero 1143 #define pfik_flags pfik_if.pfif_flags 1144 #define pfik_addcnt pfik_if.pfif_addcnt 1145 #define pfik_delcnt pfik_if.pfif_delcnt 1146 #define pfik_states pfik_if.pfif_states 1147 #define pfik_rules pfik_if.pfif_rules 1148 1149 enum pfi_kif_refs { 1150 PFI_KIF_REF_NONE, 1151 PFI_KIF_REF_STATE, 1152 PFI_KIF_REF_RULE 1153 }; 1154 1155 #define PFI_IFLAG_GROUP 0x0001 /* group of interfaces */ 1156 #define PFI_IFLAG_INSTANCE 0x0002 /* single instance */ 1157 #define PFI_IFLAG_CLONABLE 0x0010 /* clonable group */ 1158 #define PFI_IFLAG_DYNAMIC 0x0020 /* dynamic group */ 1159 #define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */ 1160 #define PFI_IFLAG_PLACEHOLDER 0x8000 /* placeholder group/interface */ 1161 1162 struct pf_pdesc { 1163 struct { 1164 int done; 1165 uid_t uid; 1166 gid_t gid; 1167 pid_t pid; 1168 } lookup; 1169 u_int64_t tot_len; /* Make Mickey money */ 1170 union { 1171 struct tcphdr *tcp; 1172 struct udphdr *udp; 1173 struct icmp *icmp; 1174 #ifdef INET6 1175 struct icmp6_hdr *icmp6; 1176 #endif /* INET6 */ 1177 void *any; 1178 } hdr; 1179 struct pf_addr baddr; /* address before translation */ 1180 struct pf_addr naddr; /* address after translation */ 1181 struct pf_rule *nat_rule; /* nat/rdr rule applied to packet */ 1182 struct pf_addr *src; 1183 struct pf_addr *dst; 1184 struct ether_header 1185 *eh; 1186 u_int16_t *ip_sum; 1187 u_int32_t p_len; /* total length of payload */ 1188 u_int16_t flags; /* Let SCRUB trigger behavior in 1189 * state code. Easier than tags */ 1190 #define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */ 1191 #define PFDESC_IP_REAS 0x0002 /* IP frags would've been reassembled */ 1192 sa_family_t af; 1193 u_int8_t proto; 1194 u_int8_t tos; 1195 }; 1196 1197 /* flags for RDR options */ 1198 #define PF_DPORT_RANGE 0x01 /* Dest port uses range */ 1199 #define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */ 1200 1201 /* Reasons code for passing/dropping a packet */ 1202 #define PFRES_MATCH 0 /* Explicit match of a rule */ 1203 #define PFRES_BADOFF 1 /* Bad offset for pull_hdr */ 1204 #define PFRES_FRAG 2 /* Dropping following fragment */ 1205 #define PFRES_SHORT 3 /* Dropping short packet */ 1206 #define PFRES_NORM 4 /* Dropping by normalizer */ 1207 #define PFRES_MEMORY 5 /* Dropped due to lacking mem */ 1208 #define PFRES_TS 6 /* Bad TCP Timestamp (RFC1323) */ 1209 #define PFRES_CONGEST 7 /* Congestion (of ipintrq) */ 1210 #define PFRES_IPOPTIONS 8 /* IP option */ 1211 #define PFRES_PROTCKSUM 9 /* Protocol checksum invalid */ 1212 #define PFRES_BADSTATE 10 /* State mismatch */ 1213 #define PFRES_STATEINS 11 /* State insertion failure */ 1214 #define PFRES_MAXSTATES 12 /* State limit */ 1215 #define PFRES_SRCLIMIT 13 /* Source node/conn limit */ 1216 #define PFRES_SYNPROXY 14 /* SYN proxy */ 1217 #define PFRES_MAX 15 /* total+1 */ 1218 1219 #define PFRES_NAMES { \ 1220 "match", \ 1221 "bad-offset", \ 1222 "fragment", \ 1223 "short", \ 1224 "normalize", \ 1225 "memory", \ 1226 "bad-timestamp", \ 1227 "congestion", \ 1228 "ip-option", \ 1229 "proto-cksum", \ 1230 "state-mismatch", \ 1231 "state-insert", \ 1232 "state-limit", \ 1233 "src-limit", \ 1234 "synproxy", \ 1235 NULL \ 1236 } 1237 1238 /* Counters for other things we want to keep track of */ 1239 #define LCNT_STATES 0 /* states */ 1240 #define LCNT_SRCSTATES 1 /* max-src-states */ 1241 #define LCNT_SRCNODES 2 /* max-src-nodes */ 1242 #define LCNT_SRCCONN 3 /* max-src-conn */ 1243 #define LCNT_SRCCONNRATE 4 /* max-src-conn-rate */ 1244 #define LCNT_OVERLOAD_TABLE 5 /* entry added to overload table */ 1245 #define LCNT_OVERLOAD_FLUSH 6 /* state entries flushed */ 1246 #define LCNT_MAX 7 /* total+1 */ 1247 1248 #define LCNT_NAMES { \ 1249 "max states per rule", \ 1250 "max-src-states", \ 1251 "max-src-nodes", \ 1252 "max-src-conn", \ 1253 "max-src-conn-rate", \ 1254 "overload table insertion", \ 1255 "overload flush states", \ 1256 NULL \ 1257 } 1258 1259 /* UDP state enumeration */ 1260 #define PFUDPS_NO_TRAFFIC 0 1261 #define PFUDPS_SINGLE 1 1262 #define PFUDPS_MULTIPLE 2 1263 1264 #define PFUDPS_NSTATES 3 /* number of state levels */ 1265 1266 #define PFUDPS_NAMES { \ 1267 "NO_TRAFFIC", \ 1268 "SINGLE", \ 1269 "MULTIPLE", \ 1270 NULL \ 1271 } 1272 1273 /* Other protocol state enumeration */ 1274 #define PFOTHERS_NO_TRAFFIC 0 1275 #define PFOTHERS_SINGLE 1 1276 #define PFOTHERS_MULTIPLE 2 1277 1278 #define PFOTHERS_NSTATES 3 /* number of state levels */ 1279 1280 #define PFOTHERS_NAMES { \ 1281 "NO_TRAFFIC", \ 1282 "SINGLE", \ 1283 "MULTIPLE", \ 1284 NULL \ 1285 } 1286 1287 #define FCNT_STATE_SEARCH 0 1288 #define FCNT_STATE_INSERT 1 1289 #define FCNT_STATE_REMOVALS 2 1290 #define FCNT_MAX 3 1291 1292 #define SCNT_SRC_NODE_SEARCH 0 1293 #define SCNT_SRC_NODE_INSERT 1 1294 #define SCNT_SRC_NODE_REMOVALS 2 1295 #define SCNT_MAX 3 1296 1297 #define ACTION_SET(a, x) \ 1298 do { \ 1299 if ((a) != NULL) \ 1300 *(a) = (x); \ 1301 } while (0) 1302 1303 #define REASON_SET(a, x) \ 1304 do { \ 1305 if ((a) != NULL) \ 1306 *(a) = (x); \ 1307 if (x < PFRES_MAX) \ 1308 pf_status.counters[x]++; \ 1309 } while (0) 1310 1311 struct pf_status { 1312 u_int64_t counters[PFRES_MAX]; 1313 u_int64_t lcounters[LCNT_MAX]; /* limit counters */ 1314 u_int64_t fcounters[FCNT_MAX]; 1315 u_int64_t scounters[SCNT_MAX]; 1316 u_int64_t pcounters[2][2][3]; 1317 u_int64_t bcounters[2][2]; 1318 u_int64_t stateid; 1319 u_int32_t running; 1320 u_int32_t states; 1321 u_int32_t src_nodes; 1322 u_int32_t since; 1323 u_int32_t debug; 1324 u_int32_t hostid; 1325 char ifname[IFNAMSIZ]; 1326 u_int8_t pf_chksum[PF_MD5_DIGEST_LENGTH]; 1327 }; 1328 1329 struct cbq_opts { 1330 u_int minburst; 1331 u_int maxburst; 1332 u_int pktsize; 1333 u_int maxpktsize; 1334 u_int ns_per_byte; 1335 u_int maxidle; 1336 int minidle; 1337 u_int offtime; 1338 int flags; 1339 }; 1340 1341 struct priq_opts { 1342 int flags; 1343 }; 1344 1345 struct hfsc_opts { 1346 /* real-time service curve */ 1347 u_int rtsc_m1; /* slope of the 1st segment in bps */ 1348 u_int rtsc_d; /* the x-projection of m1 in msec */ 1349 u_int rtsc_m2; /* slope of the 2nd segment in bps */ 1350 /* link-sharing service curve */ 1351 u_int lssc_m1; 1352 u_int lssc_d; 1353 u_int lssc_m2; 1354 /* upper-limit service curve */ 1355 u_int ulsc_m1; 1356 u_int ulsc_d; 1357 u_int ulsc_m2; 1358 int flags; 1359 }; 1360 1361 /* 1362 * XXX this needs some work 1363 */ 1364 struct fairq_opts { 1365 u_int nbuckets; /* hash buckets */ 1366 u_int hogs_m1; /* hog detection bandwidth */ 1367 int flags; 1368 1369 /* link-sharing service curve */ 1370 u_int lssc_m1; 1371 u_int lssc_d; 1372 u_int lssc_m2; 1373 }; 1374 1375 struct pf_altq { 1376 char ifname[IFNAMSIZ]; 1377 1378 void *altq_disc; /* discipline-specific state */ 1379 TAILQ_ENTRY(pf_altq) entries; 1380 1381 /* scheduler spec */ 1382 u_int8_t scheduler; /* scheduler type */ 1383 u_int16_t tbrsize; /* tokenbucket regulator size */ 1384 u_int32_t ifbandwidth; /* interface bandwidth */ 1385 1386 /* queue spec */ 1387 char qname[PF_QNAME_SIZE]; /* queue name */ 1388 char parent[PF_QNAME_SIZE]; /* parent name */ 1389 u_int32_t parent_qid; /* parent queue id */ 1390 u_int32_t bandwidth; /* queue bandwidth */ 1391 u_int8_t priority; /* priority */ 1392 u_int16_t qlimit; /* queue size limit */ 1393 u_int16_t flags; /* misc flags */ 1394 union { 1395 struct cbq_opts cbq_opts; 1396 struct priq_opts priq_opts; 1397 struct hfsc_opts hfsc_opts; 1398 struct fairq_opts fairq_opts; 1399 } pq_u; 1400 1401 u_int32_t qid; /* return value */ 1402 }; 1403 1404 /* 1405 * DO NOT USE PF_TAG_GENERATED! Set PF_MBUF_TAGGED in fw_flags instead and 1406 * then clear pf.flags. The mbuf allocator does not automatically clear 1407 * the pf fields in the mbuf packet header. 1408 */ 1409 /*#define PF_TAG_GENERATED 0x01*/ 1410 #define PF_TAG_FRAGCACHE 0x02 1411 #define PF_TAG_TRANSLATE_LOCALHOST 0x04 1412 #define PF_TAG_STATE_HASHED 0x08 1413 1414 struct pf_tag { 1415 u_int16_t tag; /* tag id */ 1416 }; 1417 1418 struct pf_tagname { 1419 TAILQ_ENTRY(pf_tagname) entries; 1420 char name[PF_TAG_NAME_SIZE]; 1421 u_int16_t tag; 1422 int ref; 1423 }; 1424 1425 #define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */ 1426 #define PFFRAG_FRAG_HIWAT 1000 /* Number of fragmented packets */ 1427 #define PFFRAG_FRCENT_HIWAT 50000 /* Number of fragment cache entries */ 1428 #define PFFRAG_FRCACHE_HIWAT 10000 /* Number of fragment descriptors */ 1429 1430 #define PFR_KTABLE_HIWAT 1000 /* Number of tables */ 1431 #define PFR_KENTRY_HIWAT 200000 /* Number of table entries */ 1432 #define PFR_KENTRY_HIWAT_SMALL 100000 /* Number of table entries (tiny hosts) */ 1433 1434 /* 1435 * ioctl parameter structures 1436 */ 1437 1438 struct pfioc_pooladdr { 1439 u_int32_t action; 1440 u_int32_t ticket; 1441 u_int32_t nr; 1442 u_int32_t r_num; 1443 u_int8_t r_action; 1444 u_int8_t r_last; 1445 u_int8_t af; 1446 char anchor[MAXPATHLEN]; 1447 struct pf_pooladdr addr; 1448 }; 1449 1450 struct pfioc_rule { 1451 u_int32_t action; 1452 u_int32_t ticket; 1453 u_int32_t pool_ticket; 1454 u_int32_t nr; 1455 char anchor[MAXPATHLEN]; 1456 char anchor_call[MAXPATHLEN]; 1457 struct pf_rule rule; 1458 }; 1459 1460 struct pfioc_natlook { 1461 struct pf_addr saddr; 1462 struct pf_addr daddr; 1463 struct pf_addr rsaddr; 1464 struct pf_addr rdaddr; 1465 u_int16_t sport; 1466 u_int16_t dport; 1467 u_int16_t rsport; 1468 u_int16_t rdport; 1469 sa_family_t af; 1470 u_int8_t proto; 1471 u_int8_t direction; 1472 }; 1473 1474 struct pfioc_state { 1475 u_int32_t nr; 1476 void *state; 1477 }; 1478 1479 struct pfioc_src_node_kill { 1480 /* XXX returns the number of src nodes killed in psnk_af */ 1481 sa_family_t psnk_af; 1482 struct pf_rule_addr psnk_src; 1483 struct pf_rule_addr psnk_dst; 1484 }; 1485 1486 struct pfioc_state_kill { 1487 /* XXX returns the number of states killed in psk_af */ 1488 sa_family_t psk_af; 1489 int psk_proto; 1490 struct pf_rule_addr psk_src; 1491 struct pf_rule_addr psk_dst; 1492 char psk_ifname[IFNAMSIZ]; 1493 }; 1494 1495 struct pfioc_states { 1496 int ps_len; 1497 union { 1498 caddr_t psu_buf; 1499 struct pfsync_state *psu_states; 1500 } ps_u; 1501 #define ps_buf ps_u.psu_buf 1502 #define ps_states ps_u.psu_states 1503 }; 1504 1505 struct pfioc_src_nodes { 1506 int psn_len; 1507 union { 1508 caddr_t psu_buf; 1509 struct pf_src_node *psu_src_nodes; 1510 } psn_u; 1511 #define psn_buf psn_u.psu_buf 1512 #define psn_src_nodes psn_u.psu_src_nodes 1513 }; 1514 1515 struct pfioc_if { 1516 char ifname[IFNAMSIZ]; 1517 }; 1518 1519 struct pfioc_tm { 1520 int timeout; 1521 int seconds; 1522 }; 1523 1524 struct pfioc_limit { 1525 int index; 1526 unsigned limit; 1527 }; 1528 1529 struct pfioc_altq { 1530 u_int32_t action; 1531 u_int32_t ticket; 1532 u_int32_t nr; 1533 struct pf_altq altq; 1534 }; 1535 1536 struct pfioc_qstats { 1537 u_int32_t ticket; 1538 u_int32_t nr; 1539 void *buf; 1540 int nbytes; 1541 u_int8_t scheduler; 1542 }; 1543 1544 struct pfioc_anchor { 1545 u_int32_t nr; 1546 char name[PF_ANCHOR_NAME_SIZE]; 1547 }; 1548 1549 struct pfioc_ruleset { 1550 u_int32_t nr; 1551 char path[MAXPATHLEN]; 1552 char name[PF_ANCHOR_NAME_SIZE]; 1553 }; 1554 1555 #define PF_RULESET_ALTQ (PF_RULESET_MAX) 1556 #define PF_RULESET_TABLE (PF_RULESET_MAX+1) 1557 struct pfioc_trans { 1558 int size; /* number of elements */ 1559 int esize; /* size of each element in bytes */ 1560 struct pfioc_trans_e { 1561 int rs_num; 1562 char anchor[MAXPATHLEN]; 1563 u_int32_t ticket; 1564 } *array; 1565 }; 1566 1567 #define PFR_FLAG_ATOMIC 0x00000001 1568 #define PFR_FLAG_DUMMY 0x00000002 1569 #define PFR_FLAG_FEEDBACK 0x00000004 1570 #define PFR_FLAG_CLSTATS 0x00000008 1571 #define PFR_FLAG_ADDRSTOO 0x00000010 1572 #define PFR_FLAG_REPLACE 0x00000020 1573 #define PFR_FLAG_ALLRSETS 0x00000040 1574 #define PFR_FLAG_ALLMASK 0x0000007F 1575 #ifdef _KERNEL 1576 #define PFR_FLAG_USERIOCTL 0x10000000 1577 #endif 1578 1579 struct pfioc_table { 1580 struct pfr_table pfrio_table; 1581 void *pfrio_buffer; 1582 int pfrio_esize; 1583 int pfrio_size; 1584 int pfrio_size2; 1585 int pfrio_nadd; 1586 int pfrio_ndel; 1587 int pfrio_nchange; 1588 int pfrio_flags; 1589 u_int32_t pfrio_ticket; 1590 }; 1591 #define pfrio_exists pfrio_nadd 1592 #define pfrio_nzero pfrio_nadd 1593 #define pfrio_nmatch pfrio_nadd 1594 #define pfrio_naddr pfrio_size2 1595 #define pfrio_setflag pfrio_size2 1596 #define pfrio_clrflag pfrio_nadd 1597 1598 struct pfioc_iface { 1599 char pfiio_name[IFNAMSIZ]; 1600 void *pfiio_buffer; 1601 int pfiio_esize; 1602 int pfiio_size; 1603 int pfiio_nzero; 1604 int pfiio_flags; 1605 }; 1606 1607 1608 /* 1609 * ioctl operations 1610 */ 1611 1612 #define DIOCSTART _IO ('D', 1) 1613 #define DIOCSTOP _IO ('D', 2) 1614 #define DIOCBEGINRULES _IOWR('D', 3, struct pfioc_rule) 1615 #define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule) 1616 #define DIOCCOMMITRULES _IOWR('D', 5, struct pfioc_rule) 1617 #define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule) 1618 #define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule) 1619 /* XXX cut 8 - 17 */ 1620 #define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill) 1621 #define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state) 1622 #define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if) 1623 #define DIOCGETSTATUS _IOWR('D', 21, struct pf_status) 1624 #define DIOCCLRSTATUS _IO ('D', 22) 1625 #define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook) 1626 #define DIOCSETDEBUG _IOWR('D', 24, u_int32_t) 1627 #define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states) 1628 #define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule) 1629 /* XXX cut 26 - 28 */ 1630 #define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm) 1631 #define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm) 1632 #define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state) 1633 #define DIOCCLRRULECTRS _IO ('D', 38) 1634 #define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit) 1635 #define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit) 1636 #define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill) 1637 #define DIOCSTARTALTQ _IO ('D', 42) 1638 #define DIOCSTOPALTQ _IO ('D', 43) 1639 #define DIOCBEGINALTQS _IOWR('D', 44, u_int32_t) 1640 #define DIOCADDALTQ _IOWR('D', 45, struct pfioc_altq) 1641 #define DIOCCOMMITALTQS _IOWR('D', 46, u_int32_t) 1642 #define DIOCGETALTQS _IOWR('D', 47, struct pfioc_altq) 1643 #define DIOCGETALTQ _IOWR('D', 48, struct pfioc_altq) 1644 #define DIOCCHANGEALTQ _IOWR('D', 49, struct pfioc_altq) 1645 #define DIOCGETQSTATS _IOWR('D', 50, struct pfioc_qstats) 1646 #define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr) 1647 #define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr) 1648 #define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr) 1649 #define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr) 1650 #define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr) 1651 #define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset) 1652 #define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset) 1653 #define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table) 1654 #define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table) 1655 #define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table) 1656 #define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table) 1657 #define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table) 1658 #define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table) 1659 #define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table) 1660 #define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table) 1661 #define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table) 1662 #define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table) 1663 #define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table) 1664 #define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table) 1665 #define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table) 1666 #define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table) 1667 #define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table) 1668 #define DIOCRINABEGIN _IOWR('D', 75, struct pfioc_table) 1669 #define DIOCRINACOMMIT _IOWR('D', 76, struct pfioc_table) 1670 #define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table) 1671 #define DIOCOSFPFLUSH _IO('D', 78) 1672 #define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl) 1673 #define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl) 1674 #define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans) 1675 #define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans) 1676 #define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans) 1677 #define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes) 1678 #define DIOCCLRSRCNODES _IO('D', 85) 1679 #define DIOCSETHOSTID _IOWR('D', 86, u_int32_t) 1680 #define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface) 1681 #define DIOCICLRISTATS _IOWR('D', 88, struct pfioc_iface) 1682 #define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface) 1683 #define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface) 1684 #define DIOCKILLSRCNODES _IOWR('D', 91, struct pfioc_src_node_kill) 1685 struct pf_ifspeed { 1686 char ifname[IFNAMSIZ]; 1687 u_int32_t baudrate; 1688 }; 1689 #define DIOCGIFSPEED _IOWR('D', 89, struct pf_ifspeed) 1690 1691 #ifdef _KERNEL 1692 RB_HEAD(pf_src_tree, pf_src_node); 1693 RB_PROTOTYPE(pf_src_tree, pf_src_node, entry, pf_src_compare); 1694 extern struct pf_src_tree tree_src_tracking; 1695 1696 RB_HEAD(pf_state_tree_id, pf_state); 1697 RB_PROTOTYPE(pf_state_tree_id, pf_state, 1698 entry_id, pf_state_compare_id); 1699 extern struct pf_state_tree_id tree_id; 1700 extern struct pf_state_queue state_list; 1701 1702 TAILQ_HEAD(pf_poolqueue, pf_pool); 1703 extern struct pf_poolqueue pf_pools[2]; 1704 TAILQ_HEAD(pf_altqqueue, pf_altq); 1705 extern struct pf_altqqueue pf_altqs[2]; 1706 extern struct pf_palist pf_pabuf; 1707 1708 extern u_int32_t ticket_altqs_active; 1709 extern u_int32_t ticket_altqs_inactive; 1710 extern int altqs_inactive_open; 1711 extern u_int32_t ticket_pabuf; 1712 extern struct pf_altqqueue *pf_altqs_active; 1713 extern struct pf_altqqueue *pf_altqs_inactive; 1714 extern struct pf_poolqueue *pf_pools_active; 1715 extern struct pf_poolqueue *pf_pools_inactive; 1716 extern int pf_tbladdr_setup(struct pf_ruleset *, 1717 struct pf_addr_wrap *); 1718 extern void pf_tbladdr_remove(struct pf_addr_wrap *); 1719 extern void pf_tbladdr_copyout(struct pf_addr_wrap *); 1720 extern void pf_calc_skip_steps(struct pf_rulequeue *); 1721 extern vm_zone_t pf_src_tree_pl, pf_rule_pl; 1722 extern vm_zone_t pf_state_pl, pf_state_key_pl, pf_altq_pl, 1723 pf_pooladdr_pl; 1724 extern vm_zone_t pfr_ktable_pl, pfr_kentry_pl; 1725 extern vm_zone_t pfr_kentry_pl2; 1726 extern vm_zone_t pf_cache_pl, pf_cent_pl; 1727 extern vm_zone_t pf_state_scrub_pl; 1728 extern vm_zone_t pfi_addr_pl; 1729 extern void pf_purge_thread(void *); 1730 extern int pf_purge_expired_src_nodes(int); 1731 extern int pf_purge_expired_states(u_int32_t, int); 1732 extern void pf_unlink_state(struct pf_state *); 1733 extern void pf_free_state(struct pf_state *); 1734 extern int pf_insert_state(struct pfi_kif *, 1735 struct pf_state *); 1736 extern int pf_insert_src_node(struct pf_src_node **, 1737 struct pf_rule *, struct pf_addr *, 1738 sa_family_t); 1739 void pf_src_tree_remove_state(struct pf_state *); 1740 u_int32_t pf_state_hash(struct pf_state_key *sk); 1741 extern struct pf_state *pf_find_state_byid(struct pf_state_cmp *); 1742 extern struct pf_state *pf_find_state_all(struct pf_state_key_cmp *, 1743 u_int8_t, int *); 1744 extern void pf_print_state(struct pf_state *); 1745 extern void pf_print_flags(u_int8_t); 1746 extern u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t, 1747 u_int8_t); 1748 1749 extern struct ifnet *sync_ifp; 1750 extern struct pf_rule pf_default_rule; 1751 extern void pf_addrcpy(struct pf_addr *, struct pf_addr *, 1752 u_int8_t); 1753 void pf_rm_rule(struct pf_rulequeue *, 1754 struct pf_rule *); 1755 1756 #ifdef INET 1757 int pf_test(int, struct ifnet *, struct mbuf **, struct ether_header *, struct inpcb *); 1758 #endif /* INET */ 1759 1760 #ifdef INET6 1761 int pf_test6(int, struct ifnet *, struct mbuf **, struct ether_header *, struct inpcb *); 1762 void pf_poolmask(struct pf_addr *, struct pf_addr*, 1763 struct pf_addr *, struct pf_addr *, u_int8_t); 1764 void pf_addr_inc(struct pf_addr *, sa_family_t); 1765 #endif /* INET6 */ 1766 1767 u_int32_t pf_new_isn(struct pf_state_key *); /* From FreeBSD */ 1768 void *pf_pull_hdr(struct mbuf *, int, void *, int, u_short *, u_short *, 1769 sa_family_t); 1770 void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t); 1771 int pflog_packet(struct pfi_kif *, struct mbuf *, sa_family_t, u_int8_t, 1772 u_int8_t, struct pf_rule *, struct pf_rule *, struct pf_ruleset *, 1773 struct pf_pdesc *); 1774 int pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *, 1775 struct pf_addr *, sa_family_t); 1776 int pf_match(u_int8_t, u_int32_t, u_int32_t, u_int32_t); 1777 int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t); 1778 int pf_match_uid(u_int8_t, uid_t, uid_t, uid_t); 1779 int pf_match_gid(u_int8_t, gid_t, gid_t, gid_t); 1780 1781 void pf_normalize_init(void); 1782 int pf_normalize_ip(struct mbuf **, int, struct pfi_kif *, u_short *, 1783 struct pf_pdesc *); 1784 int pf_normalize_ip6(struct mbuf **, int, struct pfi_kif *, u_short *, 1785 struct pf_pdesc *); 1786 int pf_normalize_tcp(int, struct pfi_kif *, struct mbuf *, int, int, void *, 1787 struct pf_pdesc *); 1788 void pf_normalize_tcp_cleanup(struct pf_state *); 1789 int pf_normalize_tcp_init(struct mbuf *, int, struct pf_pdesc *, 1790 struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *); 1791 int pf_normalize_tcp_stateful(struct mbuf *, int, struct pf_pdesc *, 1792 u_short *, struct tcphdr *, struct pf_state *, 1793 struct pf_state_peer *, struct pf_state_peer *, int *); 1794 u_int32_t 1795 pf_state_expires(const struct pf_state *); 1796 void pf_purge_expired_fragments(void); 1797 int pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kif *); 1798 int pf_rtlabel_match(struct pf_addr *, sa_family_t, struct pf_addr_wrap *); 1799 int pf_socket_lookup(int, struct pf_pdesc *); 1800 struct pf_state_key * 1801 pf_alloc_state_key(struct pf_state *); 1802 void pfr_initialize(void); 1803 int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t); 1804 void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t, 1805 u_int64_t, int, int, int); 1806 int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, 1807 struct pf_addr **, struct pf_addr **, sa_family_t); 1808 void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *); 1809 struct pfr_ktable * 1810 pfr_attach_table(struct pf_ruleset *, char *); 1811 void pfr_detach_table(struct pfr_ktable *); 1812 int pfr_clr_tables(struct pfr_table *, int *, int); 1813 int pfr_add_tables(struct pfr_table *, int, int *, int); 1814 int pfr_del_tables(struct pfr_table *, int, int *, int); 1815 int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int); 1816 int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int); 1817 int pfr_clr_tstats(struct pfr_table *, int, int *, int); 1818 int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int); 1819 int pfr_clr_addrs(struct pfr_table *, int *, int); 1820 int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *, long); 1821 int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1822 int); 1823 int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1824 int); 1825 int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1826 int *, int *, int *, int, u_int32_t); 1827 int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int); 1828 int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int); 1829 int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *, 1830 int); 1831 int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1832 int); 1833 int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int); 1834 int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int); 1835 int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int); 1836 int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *, 1837 int *, u_int32_t, int); 1838 1839 extern struct pfi_kif *pfi_all; 1840 1841 void pfi_initialize(void); 1842 struct pfi_kif *pfi_kif_get(const char *); 1843 void pfi_cleanup(void); 1844 void pfi_attach_clone(struct if_clone *); 1845 void pfi_kif_ref(struct pfi_kif *, enum pfi_kif_refs); 1846 void pfi_kif_unref(struct pfi_kif *, enum pfi_kif_refs); 1847 int pfi_kif_match(struct pfi_kif *, struct pfi_kif *); 1848 void pfi_attach_ifnet(struct ifnet *); 1849 void pfi_detach_ifnet(struct ifnet *); 1850 struct pfi_kif *pfi_lookup_create(const char *); 1851 struct pfi_kif *pfi_lookup_if(const char *); 1852 void pfi_attach_ifgroup(struct ifg_group *); 1853 void pfi_detach_ifgroup(struct ifg_group *); 1854 void pfi_group_change(const char *); 1855 int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *, 1856 sa_family_t); 1857 int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t); 1858 void pfi_dynaddr_remove(struct pf_addr_wrap *); 1859 void pfi_dynaddr_copyout(struct pf_addr_wrap *); 1860 void pfi_fill_oldstatus(struct pf_status *); 1861 int pfi_clr_istats(const char *); 1862 int pfi_get_ifaces(const char *, struct pfi_kif *, int *); 1863 int pfi_set_flags(const char *, int); 1864 int pfi_clear_flags(const char *, int); 1865 1866 u_int16_t pf_tagname2tag(char *); 1867 void pf_tag2tagname(u_int16_t, char *); 1868 void pf_tag_ref(u_int16_t); 1869 void pf_tag_unref(u_int16_t); 1870 int pf_tag_packet(struct mbuf *, int, int); 1871 u_int32_t pf_qname2qid(char *); 1872 void pf_qid2qname(u_int32_t, char *); 1873 void pf_qid_unref(u_int32_t); 1874 1875 extern struct pf_status pf_status; 1876 extern vm_zone_t pf_frent_pl, pf_frag_pl; 1877 extern struct lock pf_consistency_lock; 1878 1879 struct pf_pool_limit { 1880 void *pp; 1881 unsigned limit; 1882 }; 1883 extern struct pf_pool_limit pf_pool_limits[PF_LIMIT_MAX]; 1884 1885 struct pf_frent { 1886 LIST_ENTRY(pf_frent) fr_next; 1887 struct ip *fr_ip; 1888 struct mbuf *fr_m; 1889 }; 1890 1891 struct pf_frcache { 1892 LIST_ENTRY(pf_frcache) fr_next; 1893 uint16_t fr_off; 1894 uint16_t fr_end; 1895 }; 1896 1897 struct pf_fragment { 1898 RB_ENTRY(pf_fragment) fr_entry; 1899 TAILQ_ENTRY(pf_fragment) frag_next; 1900 struct in_addr fr_src; 1901 struct in_addr fr_dst; 1902 u_int8_t fr_p; /* protocol of this fragment */ 1903 u_int8_t fr_flags; /* status flags */ 1904 u_int16_t fr_id; /* fragment id for reassemble */ 1905 u_int16_t fr_max; /* fragment data max */ 1906 u_int32_t fr_timeout; 1907 #define fr_queue fr_u.fru_queue 1908 #define fr_cache fr_u.fru_cache 1909 union { 1910 LIST_HEAD(pf_fragq, pf_frent) fru_queue; /* buffering */ 1911 LIST_HEAD(pf_cacheq, pf_frcache) fru_cache; /* non-buf */ 1912 } fr_u; 1913 }; 1914 1915 #endif /* _KERNEL */ 1916 1917 extern struct pf_anchor_global pf_anchors; 1918 extern struct pf_anchor pf_main_anchor; 1919 #define pf_main_ruleset pf_main_anchor.ruleset 1920 1921 /* these ruleset functions can be linked into userland programs (pfctl) */ 1922 int pf_get_ruleset_number(u_int8_t); 1923 void pf_init_ruleset(struct pf_ruleset *); 1924 int pf_anchor_setup(struct pf_rule *, 1925 const struct pf_ruleset *, const char *); 1926 int pf_anchor_copyout(const struct pf_ruleset *, 1927 const struct pf_rule *, struct pfioc_rule *); 1928 void pf_anchor_remove(struct pf_rule *); 1929 void pf_remove_if_empty_ruleset(struct pf_ruleset *); 1930 struct pf_anchor *pf_find_anchor(const char *); 1931 struct pf_ruleset *pf_find_ruleset(const char *); 1932 struct pf_ruleset *pf_find_or_create_ruleset(const char *); 1933 void pf_rs_initialize(void); 1934 1935 /* The fingerprint functions can be linked into userland programs (tcpdump) */ 1936 int pf_osfp_add(struct pf_osfp_ioctl *); 1937 #ifdef _KERNEL 1938 struct pf_osfp_enlist * 1939 pf_osfp_fingerprint(struct pf_pdesc *, struct mbuf *, int, 1940 const struct tcphdr *); 1941 #endif /* _KERNEL */ 1942 struct pf_osfp_enlist * 1943 pf_osfp_fingerprint_hdr(const struct ip *, const struct ip6_hdr *, 1944 const struct tcphdr *); 1945 void pf_osfp_flush(void); 1946 int pf_osfp_get(struct pf_osfp_ioctl *); 1947 int pf_osfp_initialize(void); 1948 void pf_osfp_cleanup(void); 1949 int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t); 1950 struct pf_os_fingerprint * 1951 pf_osfp_validate(void); 1952 1953 1954 #endif /* _NET_PFVAR_H_ */ 1955