1 /* $OpenBSD: pfvar.h,v 1.276 2008/07/03 15:46:23 henning Exp $ */ 2 3 /* 4 * Copyright (c) 2010 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_PASS, PF_DROP, PF_SCRUB, PF_NOSCRUB, PF_NAT, PF_NONAT, 94 PF_BINAT, PF_NOBINAT, PF_RDR, PF_NORDR, PF_SYNPROXY_DROP }; 95 enum { PF_RULESET_SCRUB, PF_RULESET_FILTER, PF_RULESET_NAT, 96 PF_RULESET_BINAT, PF_RULESET_RDR, PF_RULESET_MAX }; 97 enum { PF_OP_NONE, PF_OP_IRG, PF_OP_EQ, PF_OP_NE, PF_OP_LT, 98 PF_OP_LE, PF_OP_GT, PF_OP_GE, PF_OP_XRG, PF_OP_RRG }; 99 enum { PF_DEBUG_NONE, PF_DEBUG_URGENT, PF_DEBUG_MISC, PF_DEBUG_NOISY }; 100 enum { PF_CHANGE_NONE, PF_CHANGE_ADD_HEAD, PF_CHANGE_ADD_TAIL, 101 PF_CHANGE_ADD_BEFORE, PF_CHANGE_ADD_AFTER, 102 PF_CHANGE_REMOVE, PF_CHANGE_GET_TICKET }; 103 enum { PF_GET_NONE, PF_GET_CLR_CNTR }; 104 enum { PF_SK_WIRE, PF_SK_STACK, PF_SK_BOTH }; 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 PF_ADDR_RANGE }; 149 #define PF_POOL_TYPEMASK 0x0f 150 #define PF_POOL_STICKYADDR 0x20 151 #define PF_WSCALE_FLAG 0x80 152 #define PF_WSCALE_MASK 0x0f 153 154 #define PF_LOG 0x01 155 #define PF_LOG_ALL 0x02 156 #define PF_LOG_SOCKET_LOOKUP 0x04 157 158 #define PR_WAITOK 0x0001 /* M_WAITOK */ 159 #define PR_NOWAIT 0x0002 /* M_NOWAIT */ 160 #define PR_LIMITFAIL 0x0004 /* M_CANFAIL */ 161 #define PR_ZERO 0x0008 /* M_ZERO */ 162 163 164 struct pf_addr { 165 union { 166 struct in_addr v4; 167 struct in6_addr v6; 168 u_int8_t addr8[16]; 169 u_int16_t addr16[8]; 170 u_int32_t addr32[4]; 171 } pfa; /* 128-bit address */ 172 #define v4 pfa.v4 173 #define v6 pfa.v6 174 #define addr8 pfa.addr8 175 #define addr16 pfa.addr16 176 #define addr32 pfa.addr32 177 }; 178 179 #define PF_TABLE_NAME_SIZE 32 180 181 #define PFI_AFLAG_NETWORK 0x01 182 #define PFI_AFLAG_BROADCAST 0x02 183 #define PFI_AFLAG_PEER 0x04 184 #define PFI_AFLAG_MODEMASK 0x07 185 #define PFI_AFLAG_NOALIAS 0x08 186 187 struct pf_addr_wrap { 188 union { 189 struct { 190 struct pf_addr addr; 191 struct pf_addr mask; 192 } a; 193 char ifname[IFNAMSIZ]; 194 char tblname[PF_TABLE_NAME_SIZE]; 195 char rtlabelname[RTLABEL_LEN]; 196 u_int32_t rtlabel; 197 } v; 198 union { 199 struct pfi_dynaddr *dyn; 200 struct pfr_ktable *tbl; 201 int dyncnt; 202 int tblcnt; 203 } p; 204 u_int8_t type; /* PF_ADDR_* */ 205 u_int8_t iflags; /* PFI_AFLAG_* */ 206 }; 207 208 #ifdef _KERNEL 209 210 struct pfi_dynaddr { 211 TAILQ_ENTRY(pfi_dynaddr) entry; 212 struct pf_addr pfid_addr4; 213 struct pf_addr pfid_mask4; 214 struct pf_addr pfid_addr6; 215 struct pf_addr pfid_mask6; 216 struct pfr_ktable *pfid_kt; 217 struct pfi_kif *pfid_kif; 218 void *pfid_hook_cookie; 219 int pfid_net; /* mask or 128 */ 220 int pfid_acnt4; /* address count IPv4 */ 221 int pfid_acnt6; /* address count IPv6 */ 222 sa_family_t pfid_af; /* rule af */ 223 u_int8_t pfid_iflags; /* PFI_AFLAG_* */ 224 }; 225 226 /* 227 * Address manipulation macros 228 */ 229 230 /* XXX correct values for zinit? */ 231 #define ZONE_CREATE(var, type, desc) \ 232 var = zinit(desc, sizeof(type), 1, ZONE_DESTROYABLE, 1); \ 233 if (var == NULL) break 234 #define ZONE_DESTROY(a) zdestroy(a) 235 236 /* #define pool_get(p, f) zalloc(*(p)) */ 237 #define pool_put(p, o) zfree(*(p), (o)) 238 239 #define NTOHS(x) (x) = ntohs((__uint16_t)(x)) 240 #define HTONS(x) (x) = htons((__uint16_t)(x)) 241 242 #define PF_NAME "pf" 243 244 #define PF_MODVER 44 245 #define PFLOG_MODVER 44 246 #define PFSYNC_MODVER 44 247 248 #define PFLOG_MINVER 44 249 #define PFLOG_PREFVER PFLOG_MODVER 250 #define PFLOG_MAXVER 44 251 #define PFSYNC_MINVER 44 252 #define PFSYNC_PREFVER PFSYNC_MODVER 253 #define PFSYNC_MAXVER 44 254 255 /* prototyped for pf_subr.c */ 256 struct hook_desc { 257 TAILQ_ENTRY(hook_desc) hd_list; 258 void (*hd_fn)(void *); 259 void *hd_arg; 260 }; 261 TAILQ_HEAD(hook_desc_head, hook_desc); 262 263 void *hook_establish(struct hook_desc_head *, int, void (*)(void *), void *); 264 void hook_disestablish(struct hook_desc_head *, void *); 265 void dohooks(struct hook_desc_head *, int); 266 void *pool_get (vm_zone_t *, int); 267 268 #define HOOK_REMOVE 0x01 269 #define HOOK_FREE 0x02 270 271 #ifdef INET 272 #ifndef INET6 273 #define PF_INET_ONLY 274 #endif /* ! INET6 */ 275 #endif /* INET */ 276 277 #ifdef INET6 278 #ifndef INET 279 #define PF_INET6_ONLY 280 #endif /* ! INET */ 281 #endif /* INET6 */ 282 283 #ifdef INET 284 #ifdef INET6 285 #define PF_INET_INET6 286 #endif /* INET6 */ 287 #endif /* INET */ 288 289 #else 290 291 #define PF_INET_INET6 292 293 #endif /* _KERNEL */ 294 295 /* Both IPv4 and IPv6 */ 296 #ifdef PF_INET_INET6 297 298 #define PF_AEQ(a, b, c) \ 299 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \ 300 ((a)->addr32[3] == (b)->addr32[3] && \ 301 (a)->addr32[2] == (b)->addr32[2] && \ 302 (a)->addr32[1] == (b)->addr32[1] && \ 303 (a)->addr32[0] == (b)->addr32[0])) \ 304 305 #define PF_ANEQ(a, b, c) \ 306 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \ 307 ((a)->addr32[3] != (b)->addr32[3] || \ 308 (a)->addr32[2] != (b)->addr32[2] || \ 309 (a)->addr32[1] != (b)->addr32[1] || \ 310 (a)->addr32[0] != (b)->addr32[0])) \ 311 312 #define PF_AZERO(a, c) \ 313 ((c == AF_INET && !(a)->addr32[0]) || \ 314 (!(a)->addr32[0] && !(a)->addr32[1] && \ 315 !(a)->addr32[2] && !(a)->addr32[3] )) \ 316 317 #define PF_MATCHA(n, a, m, b, f) \ 318 pf_match_addr(n, a, m, b, f) 319 320 #define PF_ACPY(a, b, f) \ 321 pf_addrcpy(a, b, f) 322 323 #define PF_AINC(a, f) \ 324 pf_addr_inc(a, f) 325 326 #define PF_POOLMASK(a, b, c, d, f) \ 327 pf_poolmask(a, b, c, d, f) 328 329 #else 330 331 /* Just IPv6 */ 332 333 #ifdef PF_INET6_ONLY 334 335 #define PF_AEQ(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_ANEQ(a, b, c) \ 342 ((a)->addr32[3] != (b)->addr32[3] || \ 343 (a)->addr32[2] != (b)->addr32[2] || \ 344 (a)->addr32[1] != (b)->addr32[1] || \ 345 (a)->addr32[0] != (b)->addr32[0]) \ 346 347 #define PF_AZERO(a, c) \ 348 (!(a)->addr32[0] && \ 349 !(a)->addr32[1] && \ 350 !(a)->addr32[2] && \ 351 !(a)->addr32[3] ) \ 352 353 #define PF_MATCHA(n, a, m, b, f) \ 354 pf_match_addr(n, a, m, b, f) 355 356 #define PF_ACPY(a, b, f) \ 357 pf_addrcpy(a, b, f) 358 359 #define PF_AINC(a, f) \ 360 pf_addr_inc(a, f) 361 362 #define PF_POOLMASK(a, b, c, d, f) \ 363 pf_poolmask(a, b, c, d, f) 364 365 #else 366 367 /* Just IPv4 */ 368 #ifdef PF_INET_ONLY 369 370 #define PF_AEQ(a, b, c) \ 371 ((a)->addr32[0] == (b)->addr32[0]) 372 373 #define PF_ANEQ(a, b, c) \ 374 ((a)->addr32[0] != (b)->addr32[0]) 375 376 #define PF_AZERO(a, c) \ 377 (!(a)->addr32[0]) 378 379 #define PF_MATCHA(n, a, m, b, f) \ 380 pf_match_addr(n, a, m, b, f) 381 382 #define PF_ACPY(a, b, f) \ 383 (a)->v4.s_addr = (b)->v4.s_addr 384 385 #define PF_AINC(a, f) \ 386 do { \ 387 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \ 388 } while (0) 389 390 #define PF_POOLMASK(a, b, c, d, f) \ 391 do { \ 392 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \ 393 (((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \ 394 } while (0) 395 396 #endif /* PF_INET_ONLY */ 397 #endif /* PF_INET6_ONLY */ 398 #endif /* PF_INET_INET6 */ 399 400 #define PF_MISMATCHAW(aw, x, af, neg, ifp) \ 401 ( \ 402 (((aw)->type == PF_ADDR_NOROUTE && \ 403 pf_routable((x), (af), NULL)) || \ 404 (((aw)->type == PF_ADDR_URPFFAILED && (ifp) != NULL && \ 405 pf_routable((x), (af), (ifp))) || \ 406 ((aw)->type == PF_ADDR_RTLABEL && \ 407 !pf_rtlabel_match((x), (af), (aw))) || \ 408 ((aw)->type == PF_ADDR_TABLE && \ 409 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \ 410 ((aw)->type == PF_ADDR_DYNIFTL && \ 411 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \ 412 ((aw)->type == PF_ADDR_RANGE && \ 413 !pf_match_addr_range(&(aw)->v.a.addr, \ 414 &(aw)->v.a.mask, (x), (af))) || \ 415 ((aw)->type == PF_ADDR_ADDRMASK && \ 416 !PF_AZERO(&(aw)->v.a.mask, (af)) && \ 417 !PF_MATCHA(0, &(aw)->v.a.addr, \ 418 &(aw)->v.a.mask, (x), (af))))) != \ 419 (neg) \ 420 ) 421 422 423 struct pf_rule_uid { 424 uid_t uid[2]; 425 u_int8_t op; 426 }; 427 428 struct pf_rule_gid { 429 uid_t gid[2]; 430 u_int8_t op; 431 }; 432 433 struct pf_rule_addr { 434 struct pf_addr_wrap addr; 435 u_int16_t port[2]; 436 u_int8_t neg; 437 u_int8_t port_op; 438 }; 439 440 struct pf_pooladdr { 441 struct pf_addr_wrap addr; 442 TAILQ_ENTRY(pf_pooladdr) entries; 443 char ifname[IFNAMSIZ]; 444 struct pfi_kif *kif; 445 }; 446 447 TAILQ_HEAD(pf_palist, pf_pooladdr); 448 449 struct pf_poolhashkey { 450 union { 451 u_int8_t key8[16]; 452 u_int16_t key16[8]; 453 u_int32_t key32[4]; 454 } pfk; /* 128-bit hash key */ 455 #define key8 pfk.key8 456 #define key16 pfk.key16 457 #define key32 pfk.key32 458 }; 459 460 struct pf_pool { 461 struct pf_palist list; 462 struct pf_pooladdr *cur; 463 struct pf_poolhashkey key; 464 struct pf_addr counter; 465 int tblidx; 466 u_int16_t proxy_port[2]; 467 u_int8_t port_op; 468 u_int8_t opts; 469 }; 470 471 472 /* A packed Operating System description for fingerprinting */ 473 typedef u_int32_t pf_osfp_t; 474 #define PF_OSFP_ANY ((pf_osfp_t)0) 475 #define PF_OSFP_UNKNOWN ((pf_osfp_t)-1) 476 #define PF_OSFP_NOMATCH ((pf_osfp_t)-2) 477 478 struct pf_osfp_entry { 479 SLIST_ENTRY(pf_osfp_entry) fp_entry; 480 pf_osfp_t fp_os; 481 int fp_enflags; 482 #define PF_OSFP_EXPANDED 0x001 /* expanded entry */ 483 #define PF_OSFP_GENERIC 0x002 /* generic signature */ 484 #define PF_OSFP_NODETAIL 0x004 /* no p0f details */ 485 #define PF_OSFP_LEN 32 486 char fp_class_nm[PF_OSFP_LEN]; 487 char fp_version_nm[PF_OSFP_LEN]; 488 char fp_subtype_nm[PF_OSFP_LEN]; 489 }; 490 #define PF_OSFP_ENTRY_EQ(a, b) \ 491 ((a)->fp_os == (b)->fp_os && \ 492 memcmp((a)->fp_class_nm, (b)->fp_class_nm, PF_OSFP_LEN) == 0 && \ 493 memcmp((a)->fp_version_nm, (b)->fp_version_nm, PF_OSFP_LEN) == 0 && \ 494 memcmp((a)->fp_subtype_nm, (b)->fp_subtype_nm, PF_OSFP_LEN) == 0) 495 496 /* handle pf_osfp_t packing */ 497 #define _FP_RESERVED_BIT 1 /* For the special negative #defines */ 498 #define _FP_UNUSED_BITS 1 499 #define _FP_CLASS_BITS 10 /* OS Class (Windows, Linux) */ 500 #define _FP_VERSION_BITS 10 /* OS version (95, 98, NT, 2.4.54, 3.2) */ 501 #define _FP_SUBTYPE_BITS 10 /* patch level (NT SP4, SP3, ECN patch) */ 502 #define PF_OSFP_UNPACK(osfp, class, version, subtype) do { \ 503 (class) = ((osfp) >> (_FP_VERSION_BITS+_FP_SUBTYPE_BITS)) & \ 504 ((1 << _FP_CLASS_BITS) - 1); \ 505 (version) = ((osfp) >> _FP_SUBTYPE_BITS) & \ 506 ((1 << _FP_VERSION_BITS) - 1);\ 507 (subtype) = (osfp) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 508 } while(0) 509 #define PF_OSFP_PACK(osfp, class, version, subtype) do { \ 510 (osfp) = ((class) & ((1 << _FP_CLASS_BITS) - 1)) << (_FP_VERSION_BITS \ 511 + _FP_SUBTYPE_BITS); \ 512 (osfp) |= ((version) & ((1 << _FP_VERSION_BITS) - 1)) << \ 513 _FP_SUBTYPE_BITS; \ 514 (osfp) |= (subtype) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 515 } while(0) 516 517 /* the fingerprint of an OSes TCP SYN packet */ 518 typedef u_int64_t pf_tcpopts_t; 519 struct pf_os_fingerprint { 520 SLIST_HEAD(pf_osfp_enlist, pf_osfp_entry) fp_oses; /* list of matches */ 521 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 522 u_int16_t fp_wsize; /* TCP window size */ 523 u_int16_t fp_psize; /* ip->ip_len */ 524 u_int16_t fp_mss; /* TCP MSS */ 525 u_int16_t fp_flags; 526 #define PF_OSFP_WSIZE_MOD 0x0001 /* Window modulus */ 527 #define PF_OSFP_WSIZE_DC 0x0002 /* Window don't care */ 528 #define PF_OSFP_WSIZE_MSS 0x0004 /* Window multiple of MSS */ 529 #define PF_OSFP_WSIZE_MTU 0x0008 /* Window multiple of MTU */ 530 #define PF_OSFP_PSIZE_MOD 0x0010 /* packet size modulus */ 531 #define PF_OSFP_PSIZE_DC 0x0020 /* packet size don't care */ 532 #define PF_OSFP_WSCALE 0x0040 /* TCP window scaling */ 533 #define PF_OSFP_WSCALE_MOD 0x0080 /* TCP window scale modulus */ 534 #define PF_OSFP_WSCALE_DC 0x0100 /* TCP window scale dont-care */ 535 #define PF_OSFP_MSS 0x0200 /* TCP MSS */ 536 #define PF_OSFP_MSS_MOD 0x0400 /* TCP MSS modulus */ 537 #define PF_OSFP_MSS_DC 0x0800 /* TCP MSS dont-care */ 538 #define PF_OSFP_DF 0x1000 /* IPv4 don't fragment bit */ 539 #define PF_OSFP_TS0 0x2000 /* Zero timestamp */ 540 #define PF_OSFP_INET6 0x4000 /* IPv6 */ 541 u_int8_t fp_optcnt; /* TCP option count */ 542 u_int8_t fp_wscale; /* TCP window scaling */ 543 u_int8_t fp_ttl; /* IPv4 TTL */ 544 #define PF_OSFP_MAXTTL_OFFSET 40 545 /* TCP options packing */ 546 #define PF_OSFP_TCPOPT_NOP 0x0 /* TCP NOP option */ 547 #define PF_OSFP_TCPOPT_WSCALE 0x1 /* TCP window scaling option */ 548 #define PF_OSFP_TCPOPT_MSS 0x2 /* TCP max segment size opt */ 549 #define PF_OSFP_TCPOPT_SACK 0x3 /* TCP SACK OK option */ 550 #define PF_OSFP_TCPOPT_TS 0x4 /* TCP timestamp option */ 551 #define PF_OSFP_TCPOPT_BITS 3 /* bits used by each option */ 552 #define PF_OSFP_MAX_OPTS \ 553 (sizeof(((struct pf_os_fingerprint *)0)->fp_tcpopts) * 8) \ 554 / PF_OSFP_TCPOPT_BITS 555 556 SLIST_ENTRY(pf_os_fingerprint) fp_next; 557 }; 558 559 struct pf_osfp_ioctl { 560 struct pf_osfp_entry fp_os; 561 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 562 u_int16_t fp_wsize; /* TCP window size */ 563 u_int16_t fp_psize; /* ip->ip_len */ 564 u_int16_t fp_mss; /* TCP MSS */ 565 u_int16_t fp_flags; 566 u_int8_t fp_optcnt; /* TCP option count */ 567 u_int8_t fp_wscale; /* TCP window scaling */ 568 u_int8_t fp_ttl; /* IPv4 TTL */ 569 570 int fp_getnum; /* DIOCOSFPGET number */ 571 }; 572 573 574 union pf_rule_ptr { 575 struct pf_rule *ptr; 576 u_int32_t nr; 577 }; 578 579 #define PF_ANCHOR_NAME_SIZE 64 580 581 struct pf_rule { 582 struct pf_rule_addr src; 583 struct pf_rule_addr dst; 584 #define PF_SKIP_IFP 0 585 #define PF_SKIP_DIR 1 586 #define PF_SKIP_AF 2 587 #define PF_SKIP_PROTO 3 588 #define PF_SKIP_SRC_ADDR 4 589 #define PF_SKIP_SRC_PORT 5 590 #define PF_SKIP_DST_ADDR 6 591 #define PF_SKIP_DST_PORT 7 592 #define PF_SKIP_COUNT 8 593 union pf_rule_ptr skip[PF_SKIP_COUNT]; 594 #define PF_RULE_LABEL_SIZE 64 595 char label[PF_RULE_LABEL_SIZE]; 596 #define PF_QNAME_SIZE 64 597 char ifname[IFNAMSIZ]; 598 char qname[PF_QNAME_SIZE]; 599 char pqname[PF_QNAME_SIZE]; 600 #define PF_TAG_NAME_SIZE 64 601 char tagname[PF_TAG_NAME_SIZE]; 602 char match_tagname[PF_TAG_NAME_SIZE]; 603 604 char overload_tblname[PF_TABLE_NAME_SIZE]; 605 606 TAILQ_ENTRY(pf_rule) entries; 607 struct pf_pool rpool; 608 609 u_int64_t evaluations; 610 u_int64_t packets[2]; 611 u_int64_t bytes[2]; 612 613 struct pfi_kif *kif; 614 struct pf_anchor *anchor; 615 struct pfr_ktable *overload_tbl; 616 617 pf_osfp_t os_fingerprint; 618 619 int rtableid; 620 u_int32_t timeout[PFTM_MAX]; 621 u_int32_t states_cur; 622 u_int32_t states_tot; 623 u_int32_t max_states; 624 u_int32_t src_nodes; 625 u_int32_t max_src_nodes; 626 u_int32_t max_src_states; 627 u_int32_t max_src_conn; 628 struct { 629 u_int32_t limit; 630 u_int32_t seconds; 631 } max_src_conn_rate; 632 u_int32_t qid; 633 u_int32_t pqid; 634 u_int32_t rt_listid; 635 u_int32_t nr; 636 u_int32_t prob; 637 uid_t cuid; 638 pid_t cpid; 639 640 u_int16_t return_icmp; 641 u_int16_t return_icmp6; 642 u_int16_t max_mss; 643 u_int16_t tag; 644 u_int16_t match_tag; 645 646 struct pf_rule_uid uid; 647 struct pf_rule_gid gid; 648 649 u_int32_t rule_flag; 650 u_int8_t action; 651 u_int8_t direction; 652 u_int8_t log; 653 u_int8_t logif; 654 u_int8_t quick; 655 u_int8_t ifnot; 656 u_int8_t match_tag_not; 657 u_int8_t natpass; 658 659 #define PF_STATE_NORMAL 0x1 660 #define PF_STATE_MODULATE 0x2 661 #define PF_STATE_SYNPROXY 0x3 662 u_int8_t keep_state; 663 sa_family_t af; 664 u_int8_t proto; 665 u_int8_t type; 666 u_int8_t code; 667 u_int8_t flags; 668 u_int8_t flagset; 669 u_int8_t min_ttl; 670 u_int8_t allow_opts; 671 u_int8_t rt; 672 u_int8_t return_ttl; 673 u_int8_t tos; 674 u_int8_t set_tos; 675 u_int8_t anchor_relative; 676 u_int8_t anchor_wildcard; 677 678 #define PF_FLUSH 0x01 679 #define PF_FLUSH_GLOBAL 0x02 680 u_int8_t flush; 681 682 struct { 683 struct pf_addr addr; 684 u_int16_t port; 685 } divert; 686 687 #define PF_PICKUPS_UNSPECIFIED 0 688 #define PF_PICKUPS_DISABLED 1 689 #define PF_PICKUPS_HASHONLY 2 690 #define PF_PICKUPS_ENABLED 3 691 u_int8_t pickup_mode; 692 u_int8_t unused01; /* available for use */ 693 }; 694 695 /* rule flags */ 696 #define PFRULE_DROP 0x0000 697 #define PFRULE_RETURNRST 0x0001 698 #define PFRULE_FRAGMENT 0x0002 699 #define PFRULE_RETURNICMP 0x0004 700 #define PFRULE_RETURN 0x0008 701 #define PFRULE_NOSYNC 0x0010 702 #define PFRULE_SRCTRACK 0x0020 /* track source states */ 703 #define PFRULE_RULESRCTRACK 0x0040 /* per rule */ 704 705 /* scrub flags */ 706 #define PFRULE_NODF 0x0100 707 #define PFRULE_FRAGCROP 0x0200 /* non-buffering frag cache */ 708 #define PFRULE_FRAGDROP 0x0400 /* drop funny fragments */ 709 #define PFRULE_RANDOMID 0x0800 710 #define PFRULE_REASSEMBLE_TCP 0x1000 711 #define PFRULE_SET_TOS 0x2000 712 713 /* rule flags again */ 714 #define PFRULE_IFBOUND 0x00010000 /* if-bound */ 715 #define PFRULE_STATESLOPPY 0x00020000 /* sloppy state tracking */ 716 717 #define PFSTATE_HIWAT 10000 /* default state table size */ 718 #define PFSTATE_ADAPT_START 6000 /* default adaptive timeout start */ 719 #define PFSTATE_ADAPT_END 12000 /* default adaptive timeout end */ 720 721 722 struct pf_threshold { 723 u_int32_t limit; 724 #define PF_THRESHOLD_MULT 1000 725 #define PF_THRESHOLD_MAX 0xffffffff / PF_THRESHOLD_MULT 726 u_int32_t seconds; 727 u_int32_t count; 728 u_int32_t last; 729 }; 730 731 struct pf_src_node { 732 RB_ENTRY(pf_src_node) entry; 733 struct pf_addr addr; 734 struct pf_addr raddr; 735 union pf_rule_ptr rule; 736 struct pfi_kif *kif; 737 u_int64_t bytes[2]; 738 u_int64_t packets[2]; 739 u_int32_t states; 740 u_int32_t conn; 741 struct pf_threshold conn_rate; 742 u_int32_t creation; 743 u_int32_t expire; 744 sa_family_t af; 745 u_int8_t ruletype; 746 }; 747 748 #define PFSNODE_HIWAT 10000 /* default source node table size */ 749 750 struct pf_state_scrub { 751 struct timeval pfss_last; /* time received last packet */ 752 u_int32_t pfss_tsecr; /* last echoed timestamp */ 753 u_int32_t pfss_tsval; /* largest timestamp */ 754 u_int32_t pfss_tsval0; /* original timestamp */ 755 u_int16_t pfss_flags; 756 #define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */ 757 #define PFSS_PAWS 0x0010 /* stricter PAWS checks */ 758 #define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */ 759 #define PFSS_DATA_TS 0x0040 /* timestamp on data packets */ 760 #define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */ 761 u_int8_t pfss_ttl; /* stashed TTL */ 762 u_int8_t pad; 763 u_int32_t pfss_ts_mod; /* timestamp modulation */ 764 }; 765 766 struct pf_state_host { 767 struct pf_addr addr; 768 u_int16_t port; 769 u_int16_t pad; 770 }; 771 772 struct pf_state_peer { 773 struct pf_state_scrub *scrub; /* state is scrubbed */ 774 u_int32_t seqlo; /* Max sequence number sent */ 775 u_int32_t seqhi; /* Max the other end ACKd + win */ 776 u_int32_t seqdiff; /* Sequence number modulator */ 777 u_int16_t max_win; /* largest window (pre scaling) */ 778 u_int16_t mss; /* Maximum segment size option */ 779 u_int8_t state; /* active state level */ 780 u_int8_t wscale; /* window scaling factor */ 781 u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */ 782 u_int8_t pad[1]; 783 }; 784 785 TAILQ_HEAD(pf_state_queue, pf_state); 786 787 /* keep synced with struct pf_state_key, used in RB_FIND */ 788 struct pf_state_key_cmp { 789 struct pf_addr addr[2]; 790 u_int16_t port[2]; 791 sa_family_t af; 792 u_int8_t proto; 793 u_int8_t pad[2]; 794 }; 795 796 struct pf_state_item { 797 TAILQ_ENTRY(pf_state_item) entry; 798 struct pf_state *s; 799 }; 800 801 TAILQ_HEAD(pf_statelisthead, pf_state_item); 802 803 struct pf_state_key { 804 struct pf_addr addr[2]; 805 u_int16_t port[2]; 806 sa_family_t af; 807 u_int8_t proto; 808 u_int8_t pad[2]; 809 810 RB_ENTRY(pf_state_key) entry; 811 struct pf_statelisthead states; 812 struct pf_state_key *reverse; 813 struct inpcb *inp; 814 }; 815 816 /* keep synced with struct pf_state, used in RB_FIND */ 817 struct pf_state_cmp { 818 u_int64_t id; 819 u_int32_t creatorid; 820 u_int8_t direction; 821 u_int8_t pad[3]; 822 }; 823 824 struct pf_state { 825 u_int64_t id; 826 u_int32_t creatorid; 827 u_int8_t direction; 828 u_int8_t pad[3]; 829 830 TAILQ_ENTRY(pf_state) entry_list; 831 RB_ENTRY(pf_state) entry_id; 832 struct pf_state_peer src; 833 struct pf_state_peer dst; 834 union pf_rule_ptr rule; 835 union pf_rule_ptr anchor; 836 union pf_rule_ptr nat_rule; 837 struct pf_addr rt_addr; 838 struct pf_state_key *key[2]; /* addresses stack and wire */ 839 struct pfi_kif *kif; 840 struct pfi_kif *rt_kif; 841 struct pf_src_node *src_node; 842 struct pf_src_node *nat_src_node; 843 u_int64_t packets[2]; 844 u_int64_t bytes[2]; 845 u_int32_t hash; 846 u_int32_t creation; 847 u_int32_t expire; 848 u_int32_t pfsync_time; 849 u_int16_t tag; 850 u_int8_t log; 851 u_int8_t state_flags; 852 #define PFSTATE_ALLOWOPTS 0x01 853 #define PFSTATE_SLOPPY 0x02 854 u_int8_t timeout; 855 u_int8_t sync_flags; 856 u_int8_t pickup_mode; 857 #define PFSTATE_NOSYNC 0x01 858 #define PFSTATE_FROMSYNC 0x02 859 #define PFSTATE_STALE 0x04 860 }; 861 862 /* 863 * Unified state structures for pulling states out of the kernel 864 * used by pfsync(4) and the pf(4) ioctl. 865 */ 866 struct pfsync_state_scrub { 867 u_int16_t pfss_flags; 868 u_int8_t pfss_ttl; /* stashed TTL */ 869 #define PFSYNC_SCRUB_FLAG_VALID 0x01 870 u_int8_t scrub_flag; 871 u_int32_t pfss_ts_mod; /* timestamp modulation */ 872 } __packed; 873 874 struct pfsync_state_peer { 875 struct pfsync_state_scrub scrub; /* state is scrubbed */ 876 u_int32_t seqlo; /* Max sequence number sent */ 877 u_int32_t seqhi; /* Max the other end ACKd + win */ 878 u_int32_t seqdiff; /* Sequence number modulator */ 879 u_int16_t max_win; /* largest window (pre scaling) */ 880 u_int16_t mss; /* Maximum segment size option */ 881 u_int8_t state; /* active state level */ 882 u_int8_t wscale; /* window scaling factor */ 883 u_int8_t pad[6]; 884 } __packed; 885 886 struct pfsync_state_key { 887 struct pf_addr addr[2]; 888 u_int16_t port[2]; 889 }; 890 891 struct pfsync_state { 892 u_int32_t id[2]; 893 char ifname[IFNAMSIZ]; 894 struct pfsync_state_key key[2]; 895 struct pfsync_state_peer src; 896 struct pfsync_state_peer dst; 897 struct pf_addr rt_addr; 898 u_int32_t rule; 899 u_int32_t anchor; 900 u_int32_t nat_rule; 901 u_int32_t creation; 902 u_int32_t expire; 903 u_int32_t packets[2][2]; 904 u_int32_t bytes[2][2]; 905 u_int32_t creatorid; 906 sa_family_t af; 907 u_int8_t proto; 908 u_int8_t direction; 909 u_int8_t log; 910 u_int8_t state_flags; 911 u_int8_t timeout; 912 u_int8_t sync_flags; 913 u_int8_t updates; 914 }; 915 916 #define PFSYNC_FLAG_COMPRESS 0x01 917 #define PFSYNC_FLAG_STALE 0x02 918 #define PFSYNC_FLAG_SRCNODE 0x04 919 #define PFSYNC_FLAG_NATSRCNODE 0x08 920 #define PFSTATE_GOT_SYN_MASK (PFSTATE_GOT_SYN1|PFSTATE_GOT_SYN2) 921 #define PFSTATE_GOT_SYN1 0x04 /* got SYN in one direction */ 922 #define PFSTATE_GOT_SYN2 0x08 /* got SYN in the other direction */ 923 924 /* for copies to/from network byte order */ 925 /* ioctl interface also uses network byte order */ 926 #define pf_state_peer_hton(s,d) do { \ 927 (d)->seqlo = htonl((s)->seqlo); \ 928 (d)->seqhi = htonl((s)->seqhi); \ 929 (d)->seqdiff = htonl((s)->seqdiff); \ 930 (d)->max_win = htons((s)->max_win); \ 931 (d)->mss = htons((s)->mss); \ 932 (d)->state = (s)->state; \ 933 (d)->wscale = (s)->wscale; \ 934 if ((s)->scrub) { \ 935 (d)->scrub.pfss_flags = \ 936 htons((s)->scrub->pfss_flags & PFSS_TIMESTAMP); \ 937 (d)->scrub.pfss_ttl = (s)->scrub->pfss_ttl; \ 938 (d)->scrub.pfss_ts_mod = htonl((s)->scrub->pfss_ts_mod);\ 939 (d)->scrub.scrub_flag = PFSYNC_SCRUB_FLAG_VALID; \ 940 } \ 941 } while (0) 942 943 #define pf_state_peer_ntoh(s,d) do { \ 944 (d)->seqlo = ntohl((s)->seqlo); \ 945 (d)->seqhi = ntohl((s)->seqhi); \ 946 (d)->seqdiff = ntohl((s)->seqdiff); \ 947 (d)->max_win = ntohs((s)->max_win); \ 948 (d)->mss = ntohs((s)->mss); \ 949 (d)->state = (s)->state; \ 950 (d)->wscale = (s)->wscale; \ 951 if ((s)->scrub.scrub_flag == PFSYNC_SCRUB_FLAG_VALID && \ 952 (d)->scrub != NULL) { \ 953 (d)->scrub->pfss_flags = \ 954 ntohs((s)->scrub.pfss_flags) & PFSS_TIMESTAMP; \ 955 (d)->scrub->pfss_ttl = (s)->scrub.pfss_ttl; \ 956 (d)->scrub->pfss_ts_mod = ntohl((s)->scrub.pfss_ts_mod);\ 957 } \ 958 } while (0) 959 960 #define pf_state_counter_hton(s,d) do { \ 961 d[0] = htonl((s>>32)&0xffffffff); \ 962 d[1] = htonl(s&0xffffffff); \ 963 } while (0) 964 965 #define pf_state_counter_from_pfsync(s) \ 966 (((u_int64_t)(s[0])<<32) | (u_int64_t)(s[1])) 967 968 #define pf_state_counter_ntoh(s,d) do { \ 969 d = ntohl(s[0]); \ 970 d = d<<32; \ 971 d += ntohl(s[1]); \ 972 } while (0) 973 974 TAILQ_HEAD(pf_rulequeue, pf_rule); 975 976 struct pf_anchor; 977 978 struct pf_ruleset { 979 struct { 980 struct pf_rulequeue queues[2]; 981 struct { 982 struct pf_rulequeue *ptr; 983 struct pf_rule **ptr_array; 984 u_int32_t rcount; 985 u_int32_t ticket; 986 int open; 987 } active, inactive; 988 } rules[PF_RULESET_MAX]; 989 struct pf_anchor *anchor; 990 u_int32_t tticket; 991 int tables; 992 int topen; 993 }; 994 995 RB_HEAD(pf_anchor_global, pf_anchor); 996 RB_HEAD(pf_anchor_node, pf_anchor); 997 struct pf_anchor { 998 RB_ENTRY(pf_anchor) entry_global; 999 RB_ENTRY(pf_anchor) entry_node; 1000 struct pf_anchor *parent; 1001 struct pf_anchor_node children; 1002 char name[PF_ANCHOR_NAME_SIZE]; 1003 char path[MAXPATHLEN]; 1004 struct pf_ruleset ruleset; 1005 int refcnt; /* anchor rules */ 1006 int match; 1007 }; 1008 RB_PROTOTYPE(pf_anchor_global, pf_anchor, entry_global, pf_anchor_compare); 1009 RB_PROTOTYPE(pf_anchor_node, pf_anchor, entry_node, pf_anchor_compare); 1010 1011 #define PF_RESERVED_ANCHOR "_pf" 1012 1013 #define PFR_TFLAG_PERSIST 0x00000001 1014 #define PFR_TFLAG_CONST 0x00000002 1015 #define PFR_TFLAG_ACTIVE 0x00000004 1016 #define PFR_TFLAG_INACTIVE 0x00000008 1017 #define PFR_TFLAG_REFERENCED 0x00000010 1018 #define PFR_TFLAG_REFDANCHOR 0x00000020 1019 #define PFR_TFLAG_COUNTERS 0x00000040 1020 /* Adjust masks below when adding flags. */ 1021 #define PFR_TFLAG_USRMASK 0x00000043 1022 #define PFR_TFLAG_SETMASK 0x0000003C 1023 #define PFR_TFLAG_ALLMASK 0x0000007F 1024 1025 struct pfr_table { 1026 char pfrt_anchor[MAXPATHLEN]; 1027 char pfrt_name[PF_TABLE_NAME_SIZE]; 1028 u_int32_t pfrt_flags; 1029 u_int8_t pfrt_fback; 1030 }; 1031 1032 enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED, 1033 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE, 1034 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_NOCOUNT, PFR_FB_MAX }; 1035 1036 struct pfr_addr { 1037 union { 1038 struct in_addr _pfra_ip4addr; 1039 struct in6_addr _pfra_ip6addr; 1040 } pfra_u; 1041 u_int8_t pfra_af; 1042 u_int8_t pfra_net; 1043 u_int8_t pfra_not; 1044 u_int8_t pfra_fback; 1045 }; 1046 #define pfra_ip4addr pfra_u._pfra_ip4addr 1047 #define pfra_ip6addr pfra_u._pfra_ip6addr 1048 1049 enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX }; 1050 enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX }; 1051 #define PFR_OP_XPASS PFR_OP_ADDR_MAX 1052 1053 struct pfr_astats { 1054 struct pfr_addr pfras_a; 1055 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1056 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1057 long pfras_tzero; 1058 }; 1059 1060 enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX }; 1061 1062 struct pfr_tstats { 1063 struct pfr_table pfrts_t; 1064 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1065 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1066 u_int64_t pfrts_match; 1067 u_int64_t pfrts_nomatch; 1068 long pfrts_tzero; 1069 int pfrts_cnt; 1070 int pfrts_refcnt[PFR_REFCNT_MAX]; 1071 }; 1072 #define pfrts_name pfrts_t.pfrt_name 1073 #define pfrts_flags pfrts_t.pfrt_flags 1074 1075 struct pfr_kcounters { 1076 u_int64_t pfrkc_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1077 u_int64_t pfrkc_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1078 }; 1079 1080 SLIST_HEAD(pfr_kentryworkq, pfr_kentry); 1081 struct pfr_kentry { 1082 struct radix_node pfrke_node[2]; 1083 union sockaddr_union pfrke_sa; 1084 SLIST_ENTRY(pfr_kentry) pfrke_workq; 1085 union { 1086 1087 struct pfr_kcounters *pfrke_counters; 1088 #if 0 1089 struct pfr_kroute *pfrke_route; 1090 #endif 1091 } u; 1092 long pfrke_tzero; 1093 u_int8_t pfrke_af; 1094 u_int8_t pfrke_net; 1095 u_int8_t pfrke_not; 1096 u_int8_t pfrke_mark; 1097 u_int8_t pfrke_intrpool; 1098 }; 1099 #define pfrke_counters u.pfrke_counters 1100 #define pfrke_route u.pfrke_route 1101 1102 1103 SLIST_HEAD(pfr_ktableworkq, pfr_ktable); 1104 RB_HEAD(pfr_ktablehead, pfr_ktable); 1105 struct pfr_ktable { 1106 struct pfr_tstats pfrkt_ts; 1107 RB_ENTRY(pfr_ktable) pfrkt_tree; 1108 SLIST_ENTRY(pfr_ktable) pfrkt_workq; 1109 struct radix_node_head *pfrkt_ip4; 1110 struct radix_node_head *pfrkt_ip6; 1111 struct pfr_ktable *pfrkt_shadow; 1112 struct pfr_ktable *pfrkt_root; 1113 struct pf_ruleset *pfrkt_rs; 1114 long pfrkt_larg; 1115 int pfrkt_nflags; 1116 }; 1117 #define pfrkt_t pfrkt_ts.pfrts_t 1118 #define pfrkt_name pfrkt_t.pfrt_name 1119 #define pfrkt_anchor pfrkt_t.pfrt_anchor 1120 #define pfrkt_ruleset pfrkt_t.pfrt_ruleset 1121 #define pfrkt_flags pfrkt_t.pfrt_flags 1122 #define pfrkt_cnt pfrkt_ts.pfrts_cnt 1123 #define pfrkt_refcnt pfrkt_ts.pfrts_refcnt 1124 #define pfrkt_packets pfrkt_ts.pfrts_packets 1125 #define pfrkt_bytes pfrkt_ts.pfrts_bytes 1126 #define pfrkt_match pfrkt_ts.pfrts_match 1127 #define pfrkt_nomatch pfrkt_ts.pfrts_nomatch 1128 #define pfrkt_tzero pfrkt_ts.pfrts_tzero 1129 1130 RB_HEAD(pf_state_tree, pf_state_key); 1131 RB_PROTOTYPE(pf_state_tree, pf_state_key, entry, pf_state_compare_key); 1132 1133 RB_HEAD(pf_state_tree_ext_gwy, pf_state_key); 1134 RB_PROTOTYPE(pf_state_tree_ext_gwy, pf_state_key, 1135 entry_ext_gwy, pf_state_compare_ext_gwy); 1136 1137 struct pfi_if { 1138 char pfif_name[IFNAMSIZ]; 1139 u_int64_t pfif_packets[2][2][2]; 1140 u_int64_t pfif_bytes[2][2][2]; 1141 u_int64_t pfif_addcnt; 1142 u_int64_t pfif_delcnt; 1143 long pfif_tzero; 1144 int pfif_states; 1145 int pfif_rules; 1146 int pfif_flags; 1147 }; 1148 1149 TAILQ_HEAD(pfi_grouphead, pfi_kif); 1150 TAILQ_HEAD(pfi_statehead, pfi_kif); 1151 RB_HEAD(pfi_ifhead, pfi_kif); 1152 1153 /* state tables */ 1154 extern struct pf_state_tree pf_statetbl; 1155 1156 /* keep synced with pfi_kif, used in RB_FIND */ 1157 struct pfi_kif_cmp { 1158 char pfik_ifname[IFNAMSIZ]; 1159 }; 1160 1161 struct pfi_kif { 1162 struct pfi_if pfik_if; 1163 RB_ENTRY(pfi_kif) pfik_tree; 1164 u_int64_t pfik_packets[2][2][2]; 1165 u_int64_t pfik_bytes[2][2][2]; 1166 u_int32_t pfik_tzero; 1167 int pfik_flags; 1168 struct hook_desc_head *pfik_ah_head; 1169 void *pfik_ah_cookie; 1170 struct pfi_kif *pfik_parent; 1171 struct ifnet *pfik_ifp; 1172 struct ifg_group *pfik_group; 1173 int pfik_states; 1174 int pfik_rules; 1175 TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs; 1176 }; 1177 #define pfik_name pfik_if.pfif_name 1178 #define pfik_packets pfik_if.pfif_packets 1179 #define pfik_bytes pfik_if.pfif_bytes 1180 #define pfik_tzero pfik_if.pfif_tzero 1181 #define pfik_flags pfik_if.pfif_flags 1182 #define pfik_addcnt pfik_if.pfif_addcnt 1183 #define pfik_delcnt pfik_if.pfif_delcnt 1184 #define pfik_states pfik_if.pfif_states 1185 #define pfik_rules pfik_if.pfif_rules 1186 1187 enum pfi_kif_refs { 1188 PFI_KIF_REF_NONE, 1189 PFI_KIF_REF_STATE, 1190 PFI_KIF_REF_RULE 1191 }; 1192 1193 #define PFI_IFLAG_GROUP 0x0001 /* group of interfaces */ 1194 #define PFI_IFLAG_INSTANCE 0x0002 /* single instance */ 1195 #define PFI_IFLAG_CLONABLE 0x0010 /* clonable group */ 1196 #define PFI_IFLAG_DYNAMIC 0x0020 /* dynamic group */ 1197 #define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */ 1198 #define PFI_IFLAG_PLACEHOLDER 0x8000 /* placeholder group/interface */ 1199 1200 struct pf_pdesc { 1201 struct { 1202 int done; 1203 uid_t uid; 1204 gid_t gid; 1205 pid_t pid; 1206 } lookup; 1207 u_int64_t tot_len; /* Make Mickey money */ 1208 union { 1209 struct tcphdr *tcp; 1210 struct udphdr *udp; 1211 struct icmp *icmp; 1212 #ifdef INET6 1213 struct icmp6_hdr *icmp6; 1214 #endif /* INET6 */ 1215 void *any; 1216 } hdr; 1217 1218 struct pf_rule *nat_rule; /* nat/rdr rule applied to packet */ 1219 struct ether_header 1220 *eh; 1221 struct pf_addr *src; /* src address */ 1222 struct pf_addr *dst; /* dst address */ 1223 u_int16_t *sport; 1224 u_int16_t *dport; 1225 1226 u_int32_t p_len; /* total length of payload */ 1227 1228 u_int16_t *ip_sum; 1229 u_int16_t *proto_sum; 1230 u_int16_t flags; /* Let SCRUB trigger behavior in 1231 * state code. Easier than tags */ 1232 #define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */ 1233 #define PFDESC_IP_REAS 0x0002 /* IP frags would've been reassembled */ 1234 sa_family_t af; 1235 u_int8_t proto; 1236 u_int8_t tos; 1237 u_int8_t dir; /* direction */ 1238 u_int8_t sidx; /* key index for source */ 1239 u_int8_t didx; /* key index for destination */ 1240 }; 1241 1242 /* flags for RDR options */ 1243 #define PF_DPORT_RANGE 0x01 /* Dest port uses range */ 1244 #define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */ 1245 1246 /* Reasons code for passing/dropping a packet */ 1247 #define PFRES_MATCH 0 /* Explicit match of a rule */ 1248 #define PFRES_BADOFF 1 /* Bad offset for pull_hdr */ 1249 #define PFRES_FRAG 2 /* Dropping following fragment */ 1250 #define PFRES_SHORT 3 /* Dropping short packet */ 1251 #define PFRES_NORM 4 /* Dropping by normalizer */ 1252 #define PFRES_MEMORY 5 /* Dropped due to lacking mem */ 1253 #define PFRES_TS 6 /* Bad TCP Timestamp (RFC1323) */ 1254 #define PFRES_CONGEST 7 /* Congestion (of ipintrq) */ 1255 #define PFRES_IPOPTIONS 8 /* IP option */ 1256 #define PFRES_PROTCKSUM 9 /* Protocol checksum invalid */ 1257 #define PFRES_BADSTATE 10 /* State mismatch */ 1258 #define PFRES_STATEINS 11 /* State insertion failure */ 1259 #define PFRES_MAXSTATES 12 /* State limit */ 1260 #define PFRES_SRCLIMIT 13 /* Source node/conn limit */ 1261 #define PFRES_SYNPROXY 14 /* SYN proxy */ 1262 #define PFRES_MAX 15 /* total+1 */ 1263 1264 #define PFRES_NAMES { \ 1265 "match", \ 1266 "bad-offset", \ 1267 "fragment", \ 1268 "short", \ 1269 "normalize", \ 1270 "memory", \ 1271 "bad-timestamp", \ 1272 "congestion", \ 1273 "ip-option", \ 1274 "proto-cksum", \ 1275 "state-mismatch", \ 1276 "state-insert", \ 1277 "state-limit", \ 1278 "src-limit", \ 1279 "synproxy", \ 1280 NULL \ 1281 } 1282 1283 /* Counters for other things we want to keep track of */ 1284 #define LCNT_STATES 0 /* states */ 1285 #define LCNT_SRCSTATES 1 /* max-src-states */ 1286 #define LCNT_SRCNODES 2 /* max-src-nodes */ 1287 #define LCNT_SRCCONN 3 /* max-src-conn */ 1288 #define LCNT_SRCCONNRATE 4 /* max-src-conn-rate */ 1289 #define LCNT_OVERLOAD_TABLE 5 /* entry added to overload table */ 1290 #define LCNT_OVERLOAD_FLUSH 6 /* state entries flushed */ 1291 #define LCNT_MAX 7 /* total+1 */ 1292 1293 #define LCNT_NAMES { \ 1294 "max states per rule", \ 1295 "max-src-states", \ 1296 "max-src-nodes", \ 1297 "max-src-conn", \ 1298 "max-src-conn-rate", \ 1299 "overload table insertion", \ 1300 "overload flush states", \ 1301 NULL \ 1302 } 1303 1304 /* UDP state enumeration */ 1305 #define PFUDPS_NO_TRAFFIC 0 1306 #define PFUDPS_SINGLE 1 1307 #define PFUDPS_MULTIPLE 2 1308 1309 #define PFUDPS_NSTATES 3 /* number of state levels */ 1310 1311 #define PFUDPS_NAMES { \ 1312 "NO_TRAFFIC", \ 1313 "SINGLE", \ 1314 "MULTIPLE", \ 1315 NULL \ 1316 } 1317 1318 /* Other protocol state enumeration */ 1319 #define PFOTHERS_NO_TRAFFIC 0 1320 #define PFOTHERS_SINGLE 1 1321 #define PFOTHERS_MULTIPLE 2 1322 1323 #define PFOTHERS_NSTATES 3 /* number of state levels */ 1324 1325 #define PFOTHERS_NAMES { \ 1326 "NO_TRAFFIC", \ 1327 "SINGLE", \ 1328 "MULTIPLE", \ 1329 NULL \ 1330 } 1331 1332 #define FCNT_STATE_SEARCH 0 1333 #define FCNT_STATE_INSERT 1 1334 #define FCNT_STATE_REMOVALS 2 1335 #define FCNT_MAX 3 1336 1337 #define SCNT_SRC_NODE_SEARCH 0 1338 #define SCNT_SRC_NODE_INSERT 1 1339 #define SCNT_SRC_NODE_REMOVALS 2 1340 #define SCNT_MAX 3 1341 1342 #define ACTION_SET(a, x) \ 1343 do { \ 1344 if ((a) != NULL) \ 1345 *(a) = (x); \ 1346 } while (0) 1347 1348 #define REASON_SET(a, x) \ 1349 do { \ 1350 if ((a) != NULL) \ 1351 *(a) = (x); \ 1352 if (x < PFRES_MAX) \ 1353 pf_status.counters[x]++; \ 1354 } while (0) 1355 1356 struct pf_status { 1357 u_int64_t counters[PFRES_MAX]; 1358 u_int64_t lcounters[LCNT_MAX]; /* limit counters */ 1359 u_int64_t fcounters[FCNT_MAX]; 1360 u_int64_t scounters[SCNT_MAX]; 1361 u_int64_t pcounters[2][2][3]; 1362 u_int64_t bcounters[2][2]; 1363 u_int64_t stateid; 1364 u_int32_t running; 1365 u_int32_t states; 1366 u_int32_t src_nodes; 1367 u_int32_t since; 1368 u_int32_t debug; 1369 u_int32_t hostid; 1370 char ifname[IFNAMSIZ]; 1371 u_int8_t pf_chksum[PF_MD5_DIGEST_LENGTH]; 1372 }; 1373 1374 struct cbq_opts { 1375 u_int minburst; 1376 u_int maxburst; 1377 u_int pktsize; 1378 u_int maxpktsize; 1379 u_int ns_per_byte; 1380 u_int maxidle; 1381 int minidle; 1382 u_int offtime; 1383 int flags; 1384 }; 1385 1386 struct priq_opts { 1387 int flags; 1388 }; 1389 1390 struct hfsc_opts { 1391 /* real-time service curve */ 1392 u_int rtsc_m1; /* slope of the 1st segment in bps */ 1393 u_int rtsc_d; /* the x-projection of m1 in msec */ 1394 u_int rtsc_m2; /* slope of the 2nd segment in bps */ 1395 /* link-sharing service curve */ 1396 u_int lssc_m1; 1397 u_int lssc_d; 1398 u_int lssc_m2; 1399 /* upper-limit service curve */ 1400 u_int ulsc_m1; 1401 u_int ulsc_d; 1402 u_int ulsc_m2; 1403 int flags; 1404 }; 1405 1406 /* 1407 * XXX this needs some work 1408 */ 1409 struct fairq_opts { 1410 u_int nbuckets; /* hash buckets */ 1411 u_int hogs_m1; /* hog detection bandwidth */ 1412 int flags; 1413 1414 /* link-sharing service curve */ 1415 u_int lssc_m1; 1416 u_int lssc_d; 1417 u_int lssc_m2; 1418 }; 1419 1420 struct pf_altq { 1421 char ifname[IFNAMSIZ]; 1422 1423 void *altq_disc; /* discipline-specific state */ 1424 TAILQ_ENTRY(pf_altq) entries; 1425 1426 /* scheduler spec */ 1427 u_int8_t scheduler; /* scheduler type */ 1428 u_int16_t tbrsize; /* tokenbucket regulator size */ 1429 u_int32_t ifbandwidth; /* interface bandwidth */ 1430 1431 /* queue spec */ 1432 char qname[PF_QNAME_SIZE]; /* queue name */ 1433 char parent[PF_QNAME_SIZE]; /* parent name */ 1434 u_int32_t parent_qid; /* parent queue id */ 1435 u_int32_t bandwidth; /* queue bandwidth */ 1436 u_int8_t priority; /* priority */ 1437 u_int16_t qlimit; /* queue size limit */ 1438 u_int16_t flags; /* misc flags */ 1439 union { 1440 struct cbq_opts cbq_opts; 1441 struct priq_opts priq_opts; 1442 struct hfsc_opts hfsc_opts; 1443 struct fairq_opts fairq_opts; 1444 } pq_u; 1445 1446 u_int32_t qid; /* return value */ 1447 }; 1448 1449 /* 1450 * DO NOT USE PF_TAG_GENERATED! Set PF_MBUF_TAGGED in fw_flags instead and 1451 * then clear pf.flags. The mbuf allocator does not automatically clear 1452 * the pf fields in the mbuf packet header. 1453 */ 1454 /*#define PF_TAG_GENERATED 0x01*/ 1455 #define PF_TAG_FRAGCACHE 0x02 1456 #define PF_TAG_TRANSLATE_LOCALHOST 0x04 1457 #define PF_TAG_STATE_HASHED 0x08 1458 1459 struct pf_tagname { 1460 TAILQ_ENTRY(pf_tagname) entries; 1461 char name[PF_TAG_NAME_SIZE]; 1462 u_int16_t tag; 1463 int ref; 1464 }; 1465 1466 struct pf_divert { 1467 union { 1468 struct in_addr ipv4; 1469 struct in6_addr ipv6; 1470 } addr; 1471 u_int16_t port; 1472 }; 1473 1474 #define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */ 1475 #define PFFRAG_FRAG_HIWAT 1000 /* Number of fragmented packets */ 1476 #define PFFRAG_FRCENT_HIWAT 50000 /* Number of fragment cache entries */ 1477 #define PFFRAG_FRCACHE_HIWAT 10000 /* Number of fragment descriptors */ 1478 1479 #define PFR_KTABLE_HIWAT 1000 /* Number of tables */ 1480 #define PFR_KENTRY_HIWAT 200000 /* Number of table entries */ 1481 #define PFR_KENTRY_HIWAT_SMALL 100000 /* Number of table entries (tiny hosts) */ 1482 1483 /* 1484 * ioctl parameter structures 1485 */ 1486 1487 struct pfioc_pooladdr { 1488 u_int32_t action; 1489 u_int32_t ticket; 1490 u_int32_t nr; 1491 u_int32_t r_num; 1492 u_int8_t r_action; 1493 u_int8_t r_last; 1494 u_int8_t af; 1495 char anchor[MAXPATHLEN]; 1496 struct pf_pooladdr addr; 1497 }; 1498 1499 struct pfioc_rule { 1500 u_int32_t action; 1501 u_int32_t ticket; 1502 u_int32_t pool_ticket; 1503 u_int32_t nr; 1504 char anchor[MAXPATHLEN]; 1505 char anchor_call[MAXPATHLEN]; 1506 struct pf_rule rule; 1507 }; 1508 1509 struct pfioc_natlook { 1510 struct pf_addr saddr; 1511 struct pf_addr daddr; 1512 struct pf_addr rsaddr; 1513 struct pf_addr rdaddr; 1514 u_int16_t sport; 1515 u_int16_t dport; 1516 u_int16_t rsport; 1517 u_int16_t rdport; 1518 sa_family_t af; 1519 u_int8_t proto; 1520 u_int8_t direction; 1521 }; 1522 1523 struct pfioc_state { 1524 struct pfsync_state state; 1525 }; 1526 1527 struct pfioc_src_node_kill { 1528 sa_family_t psnk_af; 1529 struct pf_rule_addr psnk_src; 1530 struct pf_rule_addr psnk_dst; 1531 u_int psnk_killed; 1532 }; 1533 1534 struct pfioc_state_kill { 1535 struct pf_state_cmp psk_pfcmp; 1536 sa_family_t psk_af; 1537 int psk_proto; 1538 struct pf_rule_addr psk_src; 1539 struct pf_rule_addr psk_dst; 1540 char psk_ifname[IFNAMSIZ]; 1541 char psk_label[PF_RULE_LABEL_SIZE]; 1542 u_int psk_killed; 1543 }; 1544 1545 struct pfioc_states { 1546 int ps_len; 1547 union { 1548 caddr_t psu_buf; 1549 struct pfsync_state *psu_states; 1550 } ps_u; 1551 #define ps_buf ps_u.psu_buf 1552 #define ps_states ps_u.psu_states 1553 }; 1554 1555 struct pfioc_src_nodes { 1556 int psn_len; 1557 union { 1558 caddr_t psu_buf; 1559 struct pf_src_node *psu_src_nodes; 1560 } psn_u; 1561 #define psn_buf psn_u.psu_buf 1562 #define psn_src_nodes psn_u.psu_src_nodes 1563 }; 1564 1565 struct pfioc_if { 1566 char ifname[IFNAMSIZ]; 1567 }; 1568 1569 struct pfioc_tm { 1570 int timeout; 1571 int seconds; 1572 }; 1573 1574 struct pfioc_limit { 1575 int index; 1576 unsigned limit; 1577 }; 1578 1579 struct pfioc_altq { 1580 u_int32_t action; 1581 u_int32_t ticket; 1582 u_int32_t nr; 1583 struct pf_altq altq; 1584 }; 1585 1586 struct pfioc_qstats { 1587 u_int32_t ticket; 1588 u_int32_t nr; 1589 void *buf; 1590 int nbytes; 1591 u_int8_t scheduler; 1592 }; 1593 1594 struct pfioc_anchor { 1595 u_int32_t nr; 1596 char name[PF_ANCHOR_NAME_SIZE]; 1597 }; 1598 1599 struct pfioc_ruleset { 1600 u_int32_t nr; 1601 char path[MAXPATHLEN]; 1602 char name[PF_ANCHOR_NAME_SIZE]; 1603 }; 1604 1605 #define PF_RULESET_ALTQ (PF_RULESET_MAX) 1606 #define PF_RULESET_TABLE (PF_RULESET_MAX+1) 1607 struct pfioc_trans { 1608 int size; /* number of elements */ 1609 int esize; /* size of each element in bytes */ 1610 struct pfioc_trans_e { 1611 int rs_num; 1612 char anchor[MAXPATHLEN]; 1613 u_int32_t ticket; 1614 } *array; 1615 }; 1616 1617 #define PFR_FLAG_ATOMIC 0x00000001 1618 #define PFR_FLAG_DUMMY 0x00000002 1619 #define PFR_FLAG_FEEDBACK 0x00000004 1620 #define PFR_FLAG_CLSTATS 0x00000008 1621 #define PFR_FLAG_ADDRSTOO 0x00000010 1622 #define PFR_FLAG_REPLACE 0x00000020 1623 #define PFR_FLAG_ALLRSETS 0x00000040 1624 #define PFR_FLAG_ALLMASK 0x0000007F 1625 #ifdef _KERNEL 1626 #define PFR_FLAG_USERIOCTL 0x10000000 1627 #endif 1628 1629 struct pfioc_table { 1630 struct pfr_table pfrio_table; 1631 void *pfrio_buffer; 1632 int pfrio_esize; 1633 int pfrio_size; 1634 int pfrio_size2; 1635 int pfrio_nadd; 1636 int pfrio_ndel; 1637 int pfrio_nchange; 1638 int pfrio_flags; 1639 u_int32_t pfrio_ticket; 1640 }; 1641 #define pfrio_exists pfrio_nadd 1642 #define pfrio_nzero pfrio_nadd 1643 #define pfrio_nmatch pfrio_nadd 1644 #define pfrio_naddr pfrio_size2 1645 #define pfrio_setflag pfrio_size2 1646 #define pfrio_clrflag pfrio_nadd 1647 1648 struct pfioc_iface { 1649 char pfiio_name[IFNAMSIZ]; 1650 void *pfiio_buffer; 1651 int pfiio_esize; 1652 int pfiio_size; 1653 int pfiio_nzero; 1654 int pfiio_flags; 1655 }; 1656 1657 1658 /* 1659 * ioctl operations 1660 */ 1661 1662 #define DIOCSTART _IO ('D', 1) 1663 #define DIOCSTOP _IO ('D', 2) 1664 #define DIOCBEGINRULES _IOWR('D', 3, struct pfioc_rule) 1665 #define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule) 1666 #define DIOCCOMMITRULES _IOWR('D', 5, struct pfioc_rule) 1667 #define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule) 1668 #define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule) 1669 /* XXX cut 8 - 17 */ 1670 #define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill) 1671 #define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state) 1672 #define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if) 1673 #define DIOCGETSTATUS _IOWR('D', 21, struct pf_status) 1674 #define DIOCCLRSTATUS _IO ('D', 22) 1675 #define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook) 1676 #define DIOCSETDEBUG _IOWR('D', 24, u_int32_t) 1677 #define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states) 1678 #define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule) 1679 /* XXX cut 26 - 28 */ 1680 #define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm) 1681 #define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm) 1682 #define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state) 1683 #define DIOCCLRRULECTRS _IO ('D', 38) 1684 #define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit) 1685 #define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit) 1686 #define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill) 1687 #define DIOCSTARTALTQ _IO ('D', 42) 1688 #define DIOCSTOPALTQ _IO ('D', 43) 1689 #define DIOCBEGINALTQS _IOWR('D', 44, u_int32_t) 1690 #define DIOCADDALTQ _IOWR('D', 45, struct pfioc_altq) 1691 #define DIOCCOMMITALTQS _IOWR('D', 46, u_int32_t) 1692 #define DIOCGETALTQS _IOWR('D', 47, struct pfioc_altq) 1693 #define DIOCGETALTQ _IOWR('D', 48, struct pfioc_altq) 1694 #define DIOCCHANGEALTQ _IOWR('D', 49, struct pfioc_altq) 1695 #define DIOCGETQSTATS _IOWR('D', 50, struct pfioc_qstats) 1696 #define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr) 1697 #define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr) 1698 #define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr) 1699 #define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr) 1700 #define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr) 1701 /* XXX cut 55 - 57 */ 1702 #define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset) 1703 #define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset) 1704 #define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table) 1705 #define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table) 1706 #define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table) 1707 #define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table) 1708 #define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table) 1709 #define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table) 1710 #define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table) 1711 #define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table) 1712 #define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table) 1713 #define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table) 1714 #define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table) 1715 #define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table) 1716 #define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table) 1717 #define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table) 1718 #define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table) 1719 #define DIOCRINABEGIN _IOWR('D', 75, struct pfioc_table) 1720 #define DIOCRINACOMMIT _IOWR('D', 76, struct pfioc_table) 1721 #define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table) 1722 #define DIOCOSFPFLUSH _IO('D', 78) 1723 #define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl) 1724 #define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl) 1725 #define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans) 1726 #define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans) 1727 #define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans) 1728 #define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes) 1729 #define DIOCCLRSRCNODES _IO('D', 85) 1730 #define DIOCSETHOSTID _IOWR('D', 86, u_int32_t) 1731 #define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface) 1732 #define DIOCICLRISTATS _IOWR('D', 88, struct pfioc_iface) 1733 #define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface) 1734 #define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface) 1735 #define DIOCKILLSRCNODES _IOWR('D', 91, struct pfioc_src_node_kill) 1736 struct pf_ifspeed { 1737 char ifname[IFNAMSIZ]; 1738 u_int32_t baudrate; 1739 }; 1740 #define DIOCGIFSPEED _IOWR('D', 89, struct pf_ifspeed) 1741 1742 #ifdef _KERNEL 1743 RB_HEAD(pf_src_tree, pf_src_node); 1744 RB_PROTOTYPE(pf_src_tree, pf_src_node, entry, pf_src_compare); 1745 extern struct pf_src_tree tree_src_tracking; 1746 1747 RB_HEAD(pf_state_tree_id, pf_state); 1748 RB_PROTOTYPE(pf_state_tree_id, pf_state, 1749 entry_id, pf_state_compare_id); 1750 extern struct pf_state_tree_id tree_id; 1751 extern struct pf_state_queue state_list; 1752 1753 TAILQ_HEAD(pf_poolqueue, pf_pool); 1754 extern struct pf_poolqueue pf_pools[2]; 1755 TAILQ_HEAD(pf_altqqueue, pf_altq); 1756 extern struct pf_altqqueue pf_altqs[2]; 1757 extern struct pf_palist pf_pabuf; 1758 1759 extern u_int32_t ticket_altqs_active; 1760 extern u_int32_t ticket_altqs_inactive; 1761 extern int altqs_inactive_open; 1762 extern u_int32_t ticket_pabuf; 1763 extern struct pf_altqqueue *pf_altqs_active; 1764 extern struct pf_altqqueue *pf_altqs_inactive; 1765 extern struct pf_poolqueue *pf_pools_active; 1766 extern struct pf_poolqueue *pf_pools_inactive; 1767 extern int pf_tbladdr_setup(struct pf_ruleset *, 1768 struct pf_addr_wrap *); 1769 extern void pf_tbladdr_remove(struct pf_addr_wrap *); 1770 extern void pf_tbladdr_copyout(struct pf_addr_wrap *); 1771 extern void pf_calc_skip_steps(struct pf_rulequeue *); 1772 extern vm_zone_t pf_src_tree_pl, pf_rule_pl; 1773 extern vm_zone_t pf_state_pl, pf_state_key_pl, pf_state_item_pl, 1774 pf_altq_pl, pf_pooladdr_pl; 1775 extern vm_zone_t pfr_ktable_pl, pfr_kentry_pl; 1776 extern vm_zone_t pfr_kentry_pl2; 1777 extern vm_zone_t pf_cache_pl, pf_cent_pl; 1778 extern vm_zone_t pf_state_scrub_pl; 1779 extern vm_zone_t pfi_addr_pl; 1780 extern void pf_purge_thread(void *); 1781 extern int pf_purge_expired_src_nodes(int); 1782 extern int pf_purge_expired_states(u_int32_t, int); 1783 extern void pf_unlink_state(struct pf_state *); 1784 extern void pf_free_state(struct pf_state *); 1785 extern int pf_state_insert(struct pfi_kif *, 1786 struct pf_state_key *, 1787 struct pf_state_key *, 1788 struct pf_state *); 1789 extern int pf_insert_src_node(struct pf_src_node **, 1790 struct pf_rule *, struct pf_addr *, 1791 sa_family_t); 1792 void pf_src_tree_remove_state(struct pf_state *); 1793 u_int32_t pf_state_hash(struct pf_state_key *sk); 1794 extern struct pf_state *pf_find_state_byid(struct pf_state_cmp *); 1795 extern struct pf_state *pf_find_state_all(struct pf_state_key_cmp *, 1796 u_int, int *); 1797 extern void pf_print_state(struct pf_state *); 1798 extern void pf_print_flags(u_int8_t); 1799 extern u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t, 1800 u_int8_t); 1801 1802 extern struct ifnet *sync_ifp; 1803 extern struct pf_rule pf_default_rule; 1804 extern void pf_addrcpy(struct pf_addr *, struct pf_addr *, 1805 u_int8_t); 1806 void pf_rm_rule(struct pf_rulequeue *, 1807 struct pf_rule *); 1808 struct pf_divert *pf_find_divert(struct mbuf *); 1809 1810 #ifdef INET 1811 int pf_test(int, struct ifnet *, struct mbuf **, struct ether_header *, struct inpcb *); 1812 #endif /* INET */ 1813 1814 #ifdef INET6 1815 int pf_test6(int, struct ifnet *, struct mbuf **, struct ether_header *, struct inpcb *); 1816 void pf_poolmask(struct pf_addr *, struct pf_addr*, 1817 struct pf_addr *, struct pf_addr *, u_int8_t); 1818 void pf_addr_inc(struct pf_addr *, sa_family_t); 1819 #endif /* INET6 */ 1820 1821 void *pf_pull_hdr(struct mbuf *, int, void *, int, u_short *, u_short *, 1822 sa_family_t); 1823 void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t); 1824 int pflog_packet(struct pfi_kif *, struct mbuf *, sa_family_t, u_int8_t, 1825 u_int8_t, struct pf_rule *, struct pf_rule *, struct pf_ruleset *, 1826 struct pf_pdesc *); 1827 int pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *, 1828 struct pf_addr *, sa_family_t); 1829 int pf_match_addr_range(struct pf_addr *, struct pf_addr *, 1830 struct pf_addr *, sa_family_t); 1831 int pf_match(u_int8_t, u_int32_t, u_int32_t, u_int32_t); 1832 int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t); 1833 int pf_match_uid(u_int8_t, uid_t, uid_t, uid_t); 1834 int pf_match_gid(u_int8_t, gid_t, gid_t, gid_t); 1835 1836 void pf_normalize_init(void); 1837 int pf_normalize_ip(struct mbuf **, int, struct pfi_kif *, u_short *, 1838 struct pf_pdesc *); 1839 int pf_normalize_ip6(struct mbuf **, int, struct pfi_kif *, u_short *, 1840 struct pf_pdesc *); 1841 int pf_normalize_tcp(int, struct pfi_kif *, struct mbuf *, int, int, void *, 1842 struct pf_pdesc *); 1843 void pf_normalize_tcp_cleanup(struct pf_state *); 1844 int pf_normalize_tcp_init(struct mbuf *, int, struct pf_pdesc *, 1845 struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *); 1846 int pf_normalize_tcp_stateful(struct mbuf *, int, struct pf_pdesc *, 1847 u_short *, struct tcphdr *, struct pf_state *, 1848 struct pf_state_peer *, struct pf_state_peer *, int *); 1849 u_int32_t 1850 pf_state_expires(const struct pf_state *); 1851 void pf_purge_expired_fragments(void); 1852 int pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kif *); 1853 int pf_rtlabel_match(struct pf_addr *, sa_family_t, struct pf_addr_wrap *); 1854 int pf_socket_lookup(int, struct pf_pdesc *); 1855 struct pf_state_key *pf_alloc_state_key(int); 1856 int pf_state_key_attach(struct pf_state_key *, struct pf_state *, int); 1857 void pfr_initialize(void); 1858 int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t); 1859 void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t, 1860 u_int64_t, int, int, int); 1861 int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, 1862 struct pf_addr **, struct pf_addr **, sa_family_t); 1863 void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *); 1864 struct pfr_ktable * 1865 pfr_attach_table(struct pf_ruleset *, char *); 1866 void pfr_detach_table(struct pfr_ktable *); 1867 int pfr_clr_tables(struct pfr_table *, int *, int); 1868 int pfr_add_tables(struct pfr_table *, int, int *, int); 1869 int pfr_del_tables(struct pfr_table *, int, int *, int); 1870 int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int); 1871 int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int); 1872 int pfr_clr_tstats(struct pfr_table *, int, int *, int); 1873 int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int); 1874 int pfr_clr_addrs(struct pfr_table *, int *, int); 1875 int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *, long); 1876 int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1877 int); 1878 int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1879 int); 1880 int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1881 int *, int *, int *, int, u_int32_t); 1882 int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int); 1883 int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int); 1884 int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *, 1885 int); 1886 int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1887 int); 1888 int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int); 1889 int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int); 1890 int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int); 1891 int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *, 1892 int *, u_int32_t, int); 1893 1894 extern struct pfi_kif *pfi_all; 1895 1896 void pfi_initialize(void); 1897 struct pfi_kif *pfi_kif_get(const char *); 1898 void pfi_cleanup(void); 1899 void pfi_attach_clone(struct if_clone *); 1900 void pfi_kif_ref(struct pfi_kif *, enum pfi_kif_refs); 1901 void pfi_kif_unref(struct pfi_kif *, enum pfi_kif_refs); 1902 int pfi_kif_match(struct pfi_kif *, struct pfi_kif *); 1903 void pfi_attach_ifnet(struct ifnet *); 1904 void pfi_detach_ifnet(struct ifnet *); 1905 struct pfi_kif *pfi_lookup_create(const char *); 1906 struct pfi_kif *pfi_lookup_if(const char *); 1907 void pfi_attach_ifgroup(struct ifg_group *); 1908 void pfi_detach_ifgroup(struct ifg_group *); 1909 void pfi_group_change(const char *); 1910 int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *, 1911 sa_family_t); 1912 int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t); 1913 void pfi_dynaddr_remove(struct pf_addr_wrap *); 1914 void pfi_dynaddr_copyout(struct pf_addr_wrap *); 1915 void pfi_update_status(const char *, struct pf_status *); 1916 int pfi_get_ifaces(const char *, struct pfi_kif *, int *); 1917 int pfi_set_flags(const char *, int); 1918 int pfi_clear_flags(const char *, int); 1919 1920 int pf_match_tag(struct mbuf *, struct pf_rule *, int *); 1921 u_int16_t pf_tagname2tag(char *); 1922 void pf_tag2tagname(u_int16_t, char *); 1923 void pf_tag_ref(u_int16_t); 1924 void pf_tag_unref(u_int16_t); 1925 int pf_tag_packet(struct mbuf *, int, int); 1926 u_int32_t pf_qname2qid(char *); 1927 void pf_qid2qname(u_int32_t, char *); 1928 void pf_qid_unref(u_int32_t); 1929 1930 extern struct pf_status pf_status; 1931 extern vm_zone_t pf_frent_pl, pf_frag_pl; 1932 extern struct lock pf_consistency_lock; 1933 1934 struct pf_pool_limit { 1935 void *pp; 1936 unsigned limit; 1937 }; 1938 extern struct pf_pool_limit pf_pool_limits[PF_LIMIT_MAX]; 1939 1940 struct pf_frent { 1941 LIST_ENTRY(pf_frent) fr_next; 1942 struct ip *fr_ip; 1943 struct mbuf *fr_m; 1944 }; 1945 1946 struct pf_frcache { 1947 LIST_ENTRY(pf_frcache) fr_next; 1948 uint16_t fr_off; 1949 uint16_t fr_end; 1950 }; 1951 1952 struct pf_fragment { 1953 RB_ENTRY(pf_fragment) fr_entry; 1954 TAILQ_ENTRY(pf_fragment) frag_next; 1955 struct in_addr fr_src; 1956 struct in_addr fr_dst; 1957 u_int8_t fr_p; /* protocol of this fragment */ 1958 u_int8_t fr_flags; /* status flags */ 1959 u_int16_t fr_id; /* fragment id for reassemble */ 1960 u_int16_t fr_max; /* fragment data max */ 1961 u_int32_t fr_timeout; 1962 #define fr_queue fr_u.fru_queue 1963 #define fr_cache fr_u.fru_cache 1964 union { 1965 LIST_HEAD(pf_fragq, pf_frent) fru_queue; /* buffering */ 1966 LIST_HEAD(pf_cacheq, pf_frcache) fru_cache; /* non-buf */ 1967 } fr_u; 1968 }; 1969 1970 #endif /* _KERNEL */ 1971 1972 extern struct radix_node_head *pf_maskhead; 1973 extern struct pf_anchor_global pf_anchors; 1974 extern struct pf_anchor pf_main_anchor; 1975 #define pf_main_ruleset pf_main_anchor.ruleset 1976 1977 /* these ruleset functions can be linked into userland programs (pfctl) */ 1978 int pf_get_ruleset_number(u_int8_t); 1979 void pf_init_ruleset(struct pf_ruleset *); 1980 int pf_anchor_setup(struct pf_rule *, 1981 const struct pf_ruleset *, const char *); 1982 int pf_anchor_copyout(const struct pf_ruleset *, 1983 const struct pf_rule *, struct pfioc_rule *); 1984 void pf_anchor_remove(struct pf_rule *); 1985 void pf_remove_if_empty_ruleset(struct pf_ruleset *); 1986 struct pf_anchor *pf_find_anchor(const char *); 1987 struct pf_ruleset *pf_find_ruleset(const char *); 1988 struct pf_ruleset *pf_find_or_create_ruleset(const char *); 1989 void pf_rs_initialize(void); 1990 1991 /* The fingerprint functions can be linked into userland programs (tcpdump) */ 1992 int pf_osfp_add(struct pf_osfp_ioctl *); 1993 #ifdef _KERNEL 1994 struct pf_osfp_enlist * 1995 pf_osfp_fingerprint(struct pf_pdesc *, struct mbuf *, int, 1996 const struct tcphdr *); 1997 #endif /* _KERNEL */ 1998 struct pf_osfp_enlist * 1999 pf_osfp_fingerprint_hdr(const struct ip *, const struct ip6_hdr *, 2000 const struct tcphdr *); 2001 void pf_osfp_flush(void); 2002 int pf_osfp_get(struct pf_osfp_ioctl *); 2003 int pf_osfp_initialize(void); 2004 void pf_osfp_cleanup(void); 2005 int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t); 2006 struct pf_os_fingerprint * 2007 pf_osfp_validate(void); 2008 2009 2010 #endif /* _NET_PFVAR_H_ */ 2011