1 /* $OpenBSD: pfvar.h,v 1.366 2012/07/13 11:14:04 henning Exp $ */ 2 3 /* 4 * Copyright (c) 2001 Daniel Hartmeier 5 * Copyright (c) 2002 - 2010 Henning Brauer 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * - Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * - Redistributions in binary form must reproduce the above 15 * copyright notice, this list of conditions and the following 16 * disclaimer in the documentation and/or other materials provided 17 * with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 22 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 23 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 25 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 26 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 27 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 29 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 * 32 */ 33 34 #ifndef _NET_PFVAR_H_ 35 #define _NET_PFVAR_H_ 36 37 #include <sys/param.h> 38 #include <sys/types.h> 39 #include <sys/queue.h> 40 #include <sys/tree.h> 41 #include <sys/rwlock.h> 42 43 #include <net/radix.h> 44 #include <net/route.h> 45 #include <netinet/ip_ipsp.h> 46 #include <netinet/tcp_fsm.h> 47 48 struct ip; 49 struct ip6_hdr; 50 51 #define PF_TCPS_PROXY_SRC ((TCP_NSTATES)+0) 52 #define PF_TCPS_PROXY_DST ((TCP_NSTATES)+1) 53 54 #define PF_MD5_DIGEST_LENGTH 16 55 #ifdef MD5_DIGEST_LENGTH 56 #if PF_MD5_DIGEST_LENGTH != MD5_DIGEST_LENGTH 57 #error 58 #endif 59 #endif 60 61 enum { PF_INOUT, PF_IN, PF_OUT, PF_FWD }; 62 enum { PF_PASS, PF_DROP, PF_SCRUB, PF_NOSCRUB, PF_NAT, PF_NONAT, 63 PF_BINAT, PF_NOBINAT, PF_RDR, PF_NORDR, PF_SYNPROXY_DROP, PF_DEFER, 64 PF_MATCH, PF_DIVERT, PF_RT, PF_AFRT }; 65 enum { PF_TRANS_RULESET, PF_TRANS_ALTQ, PF_TRANS_TABLE }; 66 enum { PF_OP_NONE, PF_OP_IRG, PF_OP_EQ, PF_OP_NE, PF_OP_LT, 67 PF_OP_LE, PF_OP_GT, PF_OP_GE, PF_OP_XRG, PF_OP_RRG }; 68 enum { PF_CHANGE_NONE, PF_CHANGE_ADD_HEAD, PF_CHANGE_ADD_TAIL, 69 PF_CHANGE_ADD_BEFORE, PF_CHANGE_ADD_AFTER, 70 PF_CHANGE_REMOVE, PF_CHANGE_GET_TICKET }; 71 enum { PF_GET_NONE, PF_GET_CLR_CNTR }; 72 enum { PF_SK_WIRE, PF_SK_STACK, PF_SK_BOTH }; 73 74 /* 75 * Note about PFTM_*: real indices into pf_rule.timeout[] come before 76 * PFTM_MAX, special cases afterwards. See pf_state_expires(). 77 */ 78 enum { PFTM_TCP_FIRST_PACKET, PFTM_TCP_OPENING, PFTM_TCP_ESTABLISHED, 79 PFTM_TCP_CLOSING, PFTM_TCP_FIN_WAIT, PFTM_TCP_CLOSED, 80 PFTM_UDP_FIRST_PACKET, PFTM_UDP_SINGLE, PFTM_UDP_MULTIPLE, 81 PFTM_ICMP_FIRST_PACKET, PFTM_ICMP_ERROR_REPLY, 82 PFTM_OTHER_FIRST_PACKET, PFTM_OTHER_SINGLE, 83 PFTM_OTHER_MULTIPLE, PFTM_FRAG, PFTM_INTERVAL, 84 PFTM_ADAPTIVE_START, PFTM_ADAPTIVE_END, PFTM_SRC_NODE, 85 PFTM_TS_DIFF, PFTM_MAX, PFTM_PURGE, PFTM_UNLINKED }; 86 87 /* PFTM default values */ 88 #define PFTM_TCP_FIRST_PACKET_VAL 120 /* First TCP packet */ 89 #define PFTM_TCP_OPENING_VAL 30 /* No response yet */ 90 #define PFTM_TCP_ESTABLISHED_VAL 24*60*60/* Established */ 91 #define PFTM_TCP_CLOSING_VAL 15 * 60 /* Half closed */ 92 #define PFTM_TCP_FIN_WAIT_VAL 45 /* Got both FINs */ 93 #define PFTM_TCP_CLOSED_VAL 90 /* Got a RST */ 94 #define PFTM_UDP_FIRST_PACKET_VAL 60 /* First UDP packet */ 95 #define PFTM_UDP_SINGLE_VAL 30 /* Unidirectional */ 96 #define PFTM_UDP_MULTIPLE_VAL 60 /* Bidirectional */ 97 #define PFTM_ICMP_FIRST_PACKET_VAL 20 /* First ICMP packet */ 98 #define PFTM_ICMP_ERROR_REPLY_VAL 10 /* Got error response */ 99 #define PFTM_OTHER_FIRST_PACKET_VAL 60 /* First packet */ 100 #define PFTM_OTHER_SINGLE_VAL 30 /* Unidirectional */ 101 #define PFTM_OTHER_MULTIPLE_VAL 60 /* Bidirectional */ 102 #define PFTM_FRAG_VAL 30 /* Fragment expire */ 103 #define PFTM_INTERVAL_VAL 10 /* Expire interval */ 104 #define PFTM_SRC_NODE_VAL 0 /* Source tracking */ 105 #define PFTM_TS_DIFF_VAL 30 /* Allowed TS diff */ 106 107 enum { PF_NOPFROUTE, PF_ROUTETO, PF_DUPTO, PF_REPLYTO }; 108 enum { PF_LIMIT_STATES, PF_LIMIT_SRC_NODES, PF_LIMIT_FRAGS, 109 PF_LIMIT_TABLES, PF_LIMIT_TABLE_ENTRIES, PF_LIMIT_MAX }; 110 #define PF_POOL_IDMASK 0x0f 111 enum { PF_POOL_NONE, PF_POOL_BITMASK, PF_POOL_RANDOM, 112 PF_POOL_SRCHASH, PF_POOL_ROUNDROBIN, PF_POOL_LEASTSTATES }; 113 enum { PF_ADDR_ADDRMASK, PF_ADDR_NOROUTE, PF_ADDR_DYNIFTL, 114 PF_ADDR_TABLE, PF_ADDR_RTLABEL, PF_ADDR_URPFFAILED, 115 PF_ADDR_RANGE, PF_ADDR_NONE }; 116 #define PF_POOL_TYPEMASK 0x0f 117 #define PF_POOL_STICKYADDR 0x20 118 #define PF_WSCALE_FLAG 0x80 119 #define PF_WSCALE_MASK 0x0f 120 121 #define PF_LOG 0x01 122 #define PF_LOG_ALL 0x02 123 #define PF_LOG_SOCKET_LOOKUP 0x04 124 #define PF_LOG_FORCE 0x08 125 #define PF_LOG_MATCHES 0x10 126 127 struct pf_addr { 128 union { 129 struct in_addr v4; 130 struct in6_addr v6; 131 u_int8_t addr8[16]; 132 u_int16_t addr16[8]; 133 u_int32_t addr32[4]; 134 } pfa; /* 128-bit address */ 135 #define v4 pfa.v4 136 #define v6 pfa.v6 137 #define addr8 pfa.addr8 138 #define addr16 pfa.addr16 139 #define addr32 pfa.addr32 140 }; 141 142 #define PF_TABLE_NAME_SIZE 32 143 144 #define PFI_AFLAG_NETWORK 0x01 145 #define PFI_AFLAG_BROADCAST 0x02 146 #define PFI_AFLAG_PEER 0x04 147 #define PFI_AFLAG_MODEMASK 0x07 148 #define PFI_AFLAG_NOALIAS 0x08 149 150 struct pf_addr_wrap { 151 union { 152 struct { 153 struct pf_addr addr; 154 struct pf_addr mask; 155 } a; 156 char ifname[IFNAMSIZ]; 157 char tblname[PF_TABLE_NAME_SIZE]; 158 char rtlabelname[RTLABEL_LEN]; 159 u_int32_t rtlabel; 160 } v; 161 union { 162 struct pfi_dynaddr *dyn; 163 struct pfr_ktable *tbl; 164 int dyncnt; 165 int tblcnt; 166 } p; 167 u_int8_t type; /* PF_ADDR_* */ 168 u_int8_t iflags; /* PFI_AFLAG_* */ 169 }; 170 171 #ifdef _KERNEL 172 173 struct pfi_dynaddr { 174 TAILQ_ENTRY(pfi_dynaddr) entry; 175 struct pf_addr pfid_addr4; 176 struct pf_addr pfid_mask4; 177 struct pf_addr pfid_addr6; 178 struct pf_addr pfid_mask6; 179 struct pfr_ktable *pfid_kt; 180 struct pfi_kif *pfid_kif; 181 void *pfid_hook_cookie; 182 int pfid_net; /* mask or 128 */ 183 int pfid_acnt4; /* address count IPv4 */ 184 int pfid_acnt6; /* address count IPv6 */ 185 sa_family_t pfid_af; /* rule af */ 186 u_int8_t pfid_iflags; /* PFI_AFLAG_* */ 187 }; 188 #endif /* _KERNEL */ 189 190 191 /* 192 * Logging macros 193 */ 194 195 #ifndef PF_DEBUGNAME 196 #define PF_DEBUGNAME "pf: " 197 #endif 198 199 #ifdef _KERNEL 200 #define DPFPRINTF(n, format, x...) \ 201 do { \ 202 if (pf_status.debug >= (n)) { \ 203 log(n, PF_DEBUGNAME); \ 204 addlog(format, ##x); \ 205 addlog("\n"); \ 206 } \ 207 } while (0) 208 #else 209 #ifdef PFDEBUG 210 #define DPFPRINTF(n, format, x...) \ 211 do { \ 212 fprintf(stderr, format, ##x); \ 213 fprintf(stderr, "\n"); \ 214 } while (0) 215 #else 216 #define DPFPRINTF(n, format, x...) ((void)0) 217 #endif /* PFDEBUG */ 218 #endif /* _KERNEL */ 219 220 221 /* 222 * Address manipulation macros 223 */ 224 225 #ifdef _KERNEL 226 #ifdef INET 227 #ifndef INET6 228 #define PF_INET_ONLY 229 #endif /* ! INET6 */ 230 #endif /* INET */ 231 232 #ifdef INET6 233 #ifndef INET 234 #define PF_INET6_ONLY 235 #endif /* ! INET */ 236 #endif /* INET6 */ 237 238 #ifdef INET 239 #ifdef INET6 240 #define PF_INET_INET6 241 #endif /* INET6 */ 242 #endif /* INET */ 243 244 #else 245 246 #define PF_INET_INET6 247 248 #endif /* _KERNEL */ 249 250 /* Both IPv4 and IPv6 */ 251 #ifdef PF_INET_INET6 252 253 #define PF_AEQ(a, b, c) \ 254 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \ 255 (c == AF_INET6 && \ 256 (a)->addr32[3] == (b)->addr32[3] && \ 257 (a)->addr32[2] == (b)->addr32[2] && \ 258 (a)->addr32[1] == (b)->addr32[1] && \ 259 (a)->addr32[0] == (b)->addr32[0])) \ 260 261 #define PF_ANEQ(a, b, c) \ 262 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \ 263 (c == AF_INET6 && \ 264 ((a)->addr32[3] != (b)->addr32[3] || \ 265 (a)->addr32[2] != (b)->addr32[2] || \ 266 (a)->addr32[1] != (b)->addr32[1] || \ 267 (a)->addr32[0] != (b)->addr32[0]))) \ 268 269 #define PF_AZERO(a, c) \ 270 ((c == AF_INET && !(a)->addr32[0]) || \ 271 (c == AF_INET6 && \ 272 !(a)->addr32[0] && !(a)->addr32[1] && \ 273 !(a)->addr32[2] && !(a)->addr32[3] )) \ 274 275 #define PF_MATCHA(n, a, m, b, f) \ 276 pf_match_addr(n, a, m, b, f) 277 278 #define PF_ACPY(a, b, f) \ 279 pf_addrcpy(a, b, f) 280 281 #define PF_AINC(a, f) \ 282 pf_addr_inc(a, f) 283 284 #define PF_POOLMASK(a, b, c, d, f) \ 285 pf_poolmask(a, b, c, d, f) 286 287 #else 288 289 /* Just IPv6 */ 290 291 #ifdef PF_INET6_ONLY 292 293 #define PF_AEQ(a, b, c) \ 294 ((a)->addr32[3] == (b)->addr32[3] && \ 295 (a)->addr32[2] == (b)->addr32[2] && \ 296 (a)->addr32[1] == (b)->addr32[1] && \ 297 (a)->addr32[0] == (b)->addr32[0]) \ 298 299 #define PF_ANEQ(a, b, c) \ 300 ((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_AZERO(a, c) \ 306 (!(a)->addr32[0] && \ 307 !(a)->addr32[1] && \ 308 !(a)->addr32[2] && \ 309 !(a)->addr32[3] ) \ 310 311 #define PF_MATCHA(n, a, m, b, f) \ 312 pf_match_addr(n, a, m, b, f) 313 314 #define PF_ACPY(a, b, f) \ 315 pf_addrcpy(a, b, f) 316 317 #define PF_AINC(a, f) \ 318 pf_addr_inc(a, f) 319 320 #define PF_POOLMASK(a, b, c, d, f) \ 321 pf_poolmask(a, b, c, d, f) 322 323 #else 324 325 /* Just IPv4 */ 326 #ifdef PF_INET_ONLY 327 328 #define PF_AEQ(a, b, c) \ 329 ((a)->addr32[0] == (b)->addr32[0]) 330 331 #define PF_ANEQ(a, b, c) \ 332 ((a)->addr32[0] != (b)->addr32[0]) 333 334 #define PF_AZERO(a, c) \ 335 (!(a)->addr32[0]) 336 337 #define PF_MATCHA(n, a, m, b, f) \ 338 pf_match_addr(n, a, m, b, f) 339 340 #define PF_ACPY(a, b, f) \ 341 (a)->v4.s_addr = (b)->v4.s_addr 342 343 #define PF_AINC(a, f) \ 344 do { \ 345 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \ 346 } while (0) 347 348 #define PF_POOLMASK(a, b, c, d, f) \ 349 do { \ 350 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \ 351 (((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \ 352 } while (0) 353 354 #endif /* PF_INET_ONLY */ 355 #endif /* PF_INET6_ONLY */ 356 #endif /* PF_INET_INET6 */ 357 358 #define PF_MISMATCHAW(aw, x, af, neg, ifp, rtid) \ 359 ( \ 360 (((aw)->type == PF_ADDR_NOROUTE && \ 361 pf_routable((x), (af), NULL, (rtid))) || \ 362 (((aw)->type == PF_ADDR_URPFFAILED && (ifp) != NULL && \ 363 pf_routable((x), (af), (ifp), (rtid))) || \ 364 ((aw)->type == PF_ADDR_RTLABEL && \ 365 !pf_rtlabel_match((x), (af), (aw), (rtid))) || \ 366 ((aw)->type == PF_ADDR_TABLE && \ 367 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \ 368 ((aw)->type == PF_ADDR_DYNIFTL && \ 369 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \ 370 ((aw)->type == PF_ADDR_RANGE && \ 371 !pf_match_addr_range(&(aw)->v.a.addr, \ 372 &(aw)->v.a.mask, (x), (af))) || \ 373 ((aw)->type == PF_ADDR_ADDRMASK && \ 374 !PF_AZERO(&(aw)->v.a.mask, (af)) && \ 375 !PF_MATCHA(0, &(aw)->v.a.addr, \ 376 &(aw)->v.a.mask, (x), (af))))) != \ 377 (neg) \ 378 ) 379 380 struct pf_rule_uid { 381 uid_t uid[2]; 382 u_int8_t op; 383 }; 384 385 struct pf_rule_gid { 386 uid_t gid[2]; 387 u_int8_t op; 388 }; 389 390 struct pf_rule_addr { 391 struct pf_addr_wrap addr; 392 u_int16_t port[2]; 393 u_int8_t neg; 394 u_int8_t port_op; 395 u_int16_t weight; 396 }; 397 398 struct pf_poolhashkey { 399 union { 400 u_int8_t key8[16]; 401 u_int16_t key16[8]; 402 u_int32_t key32[4]; 403 } pfk; /* 128-bit hash key */ 404 #define key8 pfk.key8 405 #define key16 pfk.key16 406 #define key32 pfk.key32 407 }; 408 409 struct pf_pool { 410 struct pf_addr_wrap addr; 411 struct pf_poolhashkey key; 412 struct pf_addr counter; 413 char ifname[IFNAMSIZ]; 414 struct pfi_kif *kif; 415 int tblidx; 416 u_int64_t states; 417 int curweight; 418 u_int16_t weight; 419 u_int16_t proxy_port[2]; 420 u_int8_t port_op; 421 u_int8_t opts; 422 }; 423 424 /* A packed Operating System description for fingerprinting */ 425 typedef u_int32_t pf_osfp_t; 426 #define PF_OSFP_ANY ((pf_osfp_t)0) 427 #define PF_OSFP_UNKNOWN ((pf_osfp_t)-1) 428 #define PF_OSFP_NOMATCH ((pf_osfp_t)-2) 429 430 struct pf_osfp_entry { 431 SLIST_ENTRY(pf_osfp_entry) fp_entry; 432 pf_osfp_t fp_os; 433 int fp_enflags; 434 #define PF_OSFP_EXPANDED 0x001 /* expanded entry */ 435 #define PF_OSFP_GENERIC 0x002 /* generic signature */ 436 #define PF_OSFP_NODETAIL 0x004 /* no p0f details */ 437 #define PF_OSFP_LEN 32 438 char fp_class_nm[PF_OSFP_LEN]; 439 char fp_version_nm[PF_OSFP_LEN]; 440 char fp_subtype_nm[PF_OSFP_LEN]; 441 }; 442 #define PF_OSFP_ENTRY_EQ(a, b) \ 443 ((a)->fp_os == (b)->fp_os && \ 444 memcmp((a)->fp_class_nm, (b)->fp_class_nm, PF_OSFP_LEN) == 0 && \ 445 memcmp((a)->fp_version_nm, (b)->fp_version_nm, PF_OSFP_LEN) == 0 && \ 446 memcmp((a)->fp_subtype_nm, (b)->fp_subtype_nm, PF_OSFP_LEN) == 0) 447 448 /* handle pf_osfp_t packing */ 449 #define _FP_RESERVED_BIT 1 /* For the special negative #defines */ 450 #define _FP_UNUSED_BITS 1 451 #define _FP_CLASS_BITS 10 /* OS Class (Windows, Linux) */ 452 #define _FP_VERSION_BITS 10 /* OS version (95, 98, NT, 2.4.54, 3.2) */ 453 #define _FP_SUBTYPE_BITS 10 /* patch level (NT SP4, SP3, ECN patch) */ 454 #define PF_OSFP_UNPACK(osfp, class, version, subtype) do { \ 455 (class) = ((osfp) >> (_FP_VERSION_BITS+_FP_SUBTYPE_BITS)) & \ 456 ((1 << _FP_CLASS_BITS) - 1); \ 457 (version) = ((osfp) >> _FP_SUBTYPE_BITS) & \ 458 ((1 << _FP_VERSION_BITS) - 1);\ 459 (subtype) = (osfp) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 460 } while(0) 461 #define PF_OSFP_PACK(osfp, class, version, subtype) do { \ 462 (osfp) = ((class) & ((1 << _FP_CLASS_BITS) - 1)) << (_FP_VERSION_BITS \ 463 + _FP_SUBTYPE_BITS); \ 464 (osfp) |= ((version) & ((1 << _FP_VERSION_BITS) - 1)) << \ 465 _FP_SUBTYPE_BITS; \ 466 (osfp) |= (subtype) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 467 } while(0) 468 469 /* the fingerprint of an OSes TCP SYN packet */ 470 typedef u_int64_t pf_tcpopts_t; 471 struct pf_os_fingerprint { 472 SLIST_HEAD(pf_osfp_enlist, pf_osfp_entry) fp_oses; /* list of matches */ 473 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 474 u_int16_t fp_wsize; /* TCP window size */ 475 u_int16_t fp_psize; /* ip->ip_len */ 476 u_int16_t fp_mss; /* TCP MSS */ 477 u_int16_t fp_flags; 478 #define PF_OSFP_WSIZE_MOD 0x0001 /* Window modulus */ 479 #define PF_OSFP_WSIZE_DC 0x0002 /* Window don't care */ 480 #define PF_OSFP_WSIZE_MSS 0x0004 /* Window multiple of MSS */ 481 #define PF_OSFP_WSIZE_MTU 0x0008 /* Window multiple of MTU */ 482 #define PF_OSFP_PSIZE_MOD 0x0010 /* packet size modulus */ 483 #define PF_OSFP_PSIZE_DC 0x0020 /* packet size don't care */ 484 #define PF_OSFP_WSCALE 0x0040 /* TCP window scaling */ 485 #define PF_OSFP_WSCALE_MOD 0x0080 /* TCP window scale modulus */ 486 #define PF_OSFP_WSCALE_DC 0x0100 /* TCP window scale dont-care */ 487 #define PF_OSFP_MSS 0x0200 /* TCP MSS */ 488 #define PF_OSFP_MSS_MOD 0x0400 /* TCP MSS modulus */ 489 #define PF_OSFP_MSS_DC 0x0800 /* TCP MSS dont-care */ 490 #define PF_OSFP_DF 0x1000 /* IPv4 don't fragment bit */ 491 #define PF_OSFP_TS0 0x2000 /* Zero timestamp */ 492 #define PF_OSFP_INET6 0x4000 /* IPv6 */ 493 u_int8_t fp_optcnt; /* TCP option count */ 494 u_int8_t fp_wscale; /* TCP window scaling */ 495 u_int8_t fp_ttl; /* IPv4 TTL */ 496 #define PF_OSFP_MAXTTL_OFFSET 40 497 /* TCP options packing */ 498 #define PF_OSFP_TCPOPT_NOP 0x0 /* TCP NOP option */ 499 #define PF_OSFP_TCPOPT_WSCALE 0x1 /* TCP window scaling option */ 500 #define PF_OSFP_TCPOPT_MSS 0x2 /* TCP max segment size opt */ 501 #define PF_OSFP_TCPOPT_SACK 0x3 /* TCP SACK OK option */ 502 #define PF_OSFP_TCPOPT_TS 0x4 /* TCP timestamp option */ 503 #define PF_OSFP_TCPOPT_BITS 3 /* bits used by each option */ 504 #define PF_OSFP_MAX_OPTS \ 505 (sizeof(((struct pf_os_fingerprint *)0)->fp_tcpopts) * 8) \ 506 / PF_OSFP_TCPOPT_BITS 507 508 SLIST_ENTRY(pf_os_fingerprint) fp_next; 509 }; 510 511 struct pf_osfp_ioctl { 512 struct pf_osfp_entry fp_os; 513 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 514 u_int16_t fp_wsize; /* TCP window size */ 515 u_int16_t fp_psize; /* ip->ip_len */ 516 u_int16_t fp_mss; /* TCP MSS */ 517 u_int16_t fp_flags; 518 u_int8_t fp_optcnt; /* TCP option count */ 519 u_int8_t fp_wscale; /* TCP window scaling */ 520 u_int8_t fp_ttl; /* IPv4 TTL */ 521 522 int fp_getnum; /* DIOCOSFPGET number */ 523 }; 524 525 struct pf_rule_actions { 526 int rtableid; 527 u_int16_t qid; 528 u_int16_t pqid; 529 u_int16_t max_mss; 530 u_int16_t flags; 531 u_int8_t log; 532 u_int8_t set_tos; 533 u_int8_t min_ttl; 534 u_int8_t set_prio[2]; 535 u_int8_t pad[3]; 536 }; 537 538 union pf_rule_ptr { 539 struct pf_rule *ptr; 540 u_int32_t nr; 541 }; 542 543 #define PF_ANCHOR_NAME_SIZE 64 544 545 struct pf_rule { 546 struct pf_rule_addr src; 547 struct pf_rule_addr dst; 548 #define PF_SKIP_IFP 0 549 #define PF_SKIP_DIR 1 550 #define PF_SKIP_RDOM 2 551 #define PF_SKIP_AF 3 552 #define PF_SKIP_PROTO 4 553 #define PF_SKIP_SRC_ADDR 5 554 #define PF_SKIP_DST_ADDR 6 555 #define PF_SKIP_SRC_PORT 7 556 #define PF_SKIP_DST_PORT 8 557 #define PF_SKIP_COUNT 9 558 union pf_rule_ptr skip[PF_SKIP_COUNT]; 559 #define PF_RULE_LABEL_SIZE 64 560 char label[PF_RULE_LABEL_SIZE]; 561 #define PF_QNAME_SIZE 64 562 char ifname[IFNAMSIZ]; 563 char rcv_ifname[IFNAMSIZ]; 564 char qname[PF_QNAME_SIZE]; 565 char pqname[PF_QNAME_SIZE]; 566 #define PF_TAG_NAME_SIZE 64 567 char tagname[PF_TAG_NAME_SIZE]; 568 char match_tagname[PF_TAG_NAME_SIZE]; 569 570 char overload_tblname[PF_TABLE_NAME_SIZE]; 571 572 TAILQ_ENTRY(pf_rule) entries; 573 struct pf_pool nat; 574 struct pf_pool rdr; 575 struct pf_pool route; 576 577 u_int64_t evaluations; 578 u_int64_t packets[2]; 579 u_int64_t bytes[2]; 580 581 struct pfi_kif *kif; 582 struct pfi_kif *rcv_kif; 583 struct pf_anchor *anchor; 584 struct pfr_ktable *overload_tbl; 585 586 pf_osfp_t os_fingerprint; 587 588 int rtableid; 589 int onrdomain; 590 u_int32_t timeout[PFTM_MAX]; 591 u_int32_t states_cur; 592 u_int32_t states_tot; 593 u_int32_t max_states; 594 u_int32_t src_nodes; 595 u_int32_t max_src_nodes; 596 u_int32_t max_src_states; 597 u_int32_t max_src_conn; 598 struct { 599 u_int32_t limit; 600 u_int32_t seconds; 601 } max_src_conn_rate; 602 u_int32_t qid; 603 u_int32_t pqid; 604 u_int32_t rt_listid; 605 u_int32_t nr; 606 u_int32_t prob; 607 uid_t cuid; 608 pid_t cpid; 609 610 u_int16_t return_icmp; 611 u_int16_t return_icmp6; 612 u_int16_t max_mss; 613 u_int16_t tag; 614 u_int16_t match_tag; 615 u_int16_t scrub_flags; 616 617 struct pf_rule_uid uid; 618 struct pf_rule_gid gid; 619 620 u_int32_t rule_flag; 621 u_int8_t action; 622 u_int8_t direction; 623 u_int8_t log; 624 u_int8_t logif; 625 u_int8_t quick; 626 u_int8_t ifnot; 627 u_int8_t match_tag_not; 628 629 #define PF_STATE_NORMAL 0x1 630 #define PF_STATE_MODULATE 0x2 631 #define PF_STATE_SYNPROXY 0x3 632 u_int8_t keep_state; 633 sa_family_t af; 634 u_int8_t proto; 635 u_int8_t type; 636 u_int8_t code; 637 u_int8_t flags; 638 u_int8_t flagset; 639 u_int8_t min_ttl; 640 u_int8_t allow_opts; 641 u_int8_t rt; 642 u_int8_t return_ttl; 643 u_int8_t tos; 644 u_int8_t set_tos; 645 u_int8_t anchor_relative; 646 u_int8_t anchor_wildcard; 647 648 #define PF_FLUSH 0x01 649 #define PF_FLUSH_GLOBAL 0x02 650 u_int8_t flush; 651 #define PF_PRIO_NOTSET 0xff 652 u_int8_t set_prio[2]; 653 sa_family_t naf; 654 655 struct { 656 struct pf_addr addr; 657 u_int16_t port; 658 } divert, divert_packet; 659 }; 660 661 /* rule flags */ 662 #define PFRULE_DROP 0x0000 663 #define PFRULE_RETURNRST 0x0001 664 #define PFRULE_FRAGMENT 0x0002 665 #define PFRULE_RETURNICMP 0x0004 666 #define PFRULE_RETURN 0x0008 667 #define PFRULE_NOSYNC 0x0010 668 #define PFRULE_SRCTRACK 0x0020 /* track source states */ 669 #define PFRULE_RULESRCTRACK 0x0040 /* per rule */ 670 671 /* rule flags again */ 672 #define PFRULE_IFBOUND 0x00010000 /* if-bound */ 673 #define PFRULE_STATESLOPPY 0x00020000 /* sloppy state tracking */ 674 #define PFRULE_PFLOW 0x00040000 675 #define PFRULE_ONCE 0x00100000 /* one shot rule */ 676 #define PFRULE_AFTO 0x00200000 /* af-to rule */ 677 678 #define PFSTATE_HIWAT 10000 /* default state table size */ 679 #define PFSTATE_ADAPT_START 6000 /* default adaptive timeout start */ 680 #define PFSTATE_ADAPT_END 12000 /* default adaptive timeout end */ 681 682 683 struct pf_threshold { 684 u_int32_t limit; 685 #define PF_THRESHOLD_MULT 1000 686 #define PF_THRESHOLD_MAX 0xffffffff / PF_THRESHOLD_MULT 687 u_int32_t seconds; 688 u_int32_t count; 689 u_int32_t last; 690 }; 691 692 struct pf_rule_item { 693 SLIST_ENTRY(pf_rule_item) entry; 694 struct pf_rule *r; 695 }; 696 697 SLIST_HEAD(pf_rule_slist, pf_rule_item); 698 699 enum pf_sn_types { PF_SN_NONE, PF_SN_NAT, PF_SN_RDR, PF_SN_ROUTE, PF_SN_MAX }; 700 701 struct pf_src_node { 702 RB_ENTRY(pf_src_node) entry; 703 struct pf_addr addr; 704 struct pf_addr raddr; 705 union pf_rule_ptr rule; 706 struct pfi_kif *kif; 707 u_int64_t bytes[2]; 708 u_int64_t packets[2]; 709 u_int32_t states; 710 u_int32_t conn; 711 struct pf_threshold conn_rate; 712 u_int32_t creation; 713 u_int32_t expire; 714 sa_family_t af; 715 sa_family_t naf; 716 u_int8_t type; 717 }; 718 719 struct pf_sn_item { 720 SLIST_ENTRY(pf_sn_item) next; 721 struct pf_src_node *sn; 722 }; 723 724 SLIST_HEAD(pf_sn_head, pf_sn_item); 725 726 #define PFSNODE_HIWAT 10000 /* default source node table size */ 727 728 struct pf_state_scrub { 729 struct timeval pfss_last; /* time received last packet */ 730 u_int32_t pfss_tsecr; /* last echoed timestamp */ 731 u_int32_t pfss_tsval; /* largest timestamp */ 732 u_int32_t pfss_tsval0; /* original timestamp */ 733 u_int16_t pfss_flags; 734 #define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */ 735 #define PFSS_PAWS 0x0010 /* stricter PAWS checks */ 736 #define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */ 737 #define PFSS_DATA_TS 0x0040 /* timestamp on data packets */ 738 #define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */ 739 u_int8_t pfss_ttl; /* stashed TTL */ 740 u_int8_t pad; 741 u_int32_t pfss_ts_mod; /* timestamp modulation */ 742 }; 743 744 struct pf_state_host { 745 struct pf_addr addr; 746 u_int16_t port; 747 u_int16_t pad; 748 }; 749 750 struct pf_state_peer { 751 struct pf_state_scrub *scrub; /* state is scrubbed */ 752 u_int32_t seqlo; /* Max sequence number sent */ 753 u_int32_t seqhi; /* Max the other end ACKd + win */ 754 u_int32_t seqdiff; /* Sequence number modulator */ 755 u_int16_t max_win; /* largest window (pre scaling) */ 756 u_int16_t mss; /* Maximum segment size option */ 757 u_int8_t state; /* active state level */ 758 u_int8_t wscale; /* window scaling factor */ 759 u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */ 760 u_int8_t pad[1]; 761 }; 762 763 TAILQ_HEAD(pf_state_queue, pf_state); 764 765 /* keep synced with struct pf_state_key, used in RB_FIND */ 766 struct pf_state_key_cmp { 767 struct pf_addr addr[2]; 768 u_int16_t port[2]; 769 u_int16_t rdomain; 770 sa_family_t af; 771 u_int8_t proto; 772 }; 773 774 struct pf_state_item { 775 TAILQ_ENTRY(pf_state_item) entry; 776 struct pf_state *s; 777 }; 778 779 TAILQ_HEAD(pf_statelisthead, pf_state_item); 780 781 struct pf_state_key { 782 struct pf_addr addr[2]; 783 u_int16_t port[2]; 784 u_int16_t rdomain; 785 sa_family_t af; 786 u_int8_t proto; 787 788 RB_ENTRY(pf_state_key) entry; 789 struct pf_statelisthead states; 790 struct pf_state_key *reverse; 791 struct inpcb *inp; 792 }; 793 #define PF_REVERSED_KEY(key, family) \ 794 ((key[PF_SK_WIRE]->af != key[PF_SK_STACK]->af) && \ 795 (key[PF_SK_WIRE]->af != (family))) 796 797 /* keep synced with struct pf_state, used in RB_FIND */ 798 struct pf_state_cmp { 799 u_int64_t id; 800 u_int32_t creatorid; 801 u_int8_t direction; 802 u_int8_t pad[3]; 803 }; 804 805 struct pf_state { 806 u_int64_t id; 807 u_int32_t creatorid; 808 u_int8_t direction; 809 u_int8_t pad[3]; 810 811 TAILQ_ENTRY(pf_state) sync_list; 812 TAILQ_ENTRY(pf_state) entry_list; 813 RB_ENTRY(pf_state) entry_id; 814 struct pf_state_peer src; 815 struct pf_state_peer dst; 816 struct pf_rule_slist match_rules; 817 union pf_rule_ptr rule; 818 union pf_rule_ptr anchor; 819 union pf_rule_ptr natrule; 820 struct pf_addr rt_addr; 821 struct pf_sn_head src_nodes; 822 struct pf_state_key *key[2]; /* addresses stack and wire */ 823 struct pfi_kif *kif; 824 struct pfi_kif *rt_kif; 825 u_int64_t packets[2]; 826 u_int64_t bytes[2]; 827 u_int32_t creation; 828 u_int32_t expire; 829 u_int32_t pfsync_time; 830 u_int16_t qid; 831 u_int16_t pqid; 832 u_int16_t tag; 833 u_int16_t state_flags; 834 #define PFSTATE_ALLOWOPTS 0x0001 835 #define PFSTATE_SLOPPY 0x0002 836 #define PFSTATE_PFLOW 0x0004 837 #define PFSTATE_NOSYNC 0x0008 838 #define PFSTATE_ACK 0x0010 839 #define PFSTATE_NODF 0x0020 840 #define PFSTATE_SETTOS 0x0040 841 #define PFSTATE_RANDOMID 0x0080 842 #define PFSTATE_SCRUB_TCP 0x0100 843 #define PFSTATE_SCRUBMASK (PFSTATE_NODF|PFSTATE_RANDOMID|PFSTATE_SCRUB_TCP) 844 u_int8_t log; 845 u_int8_t timeout; 846 u_int8_t sync_state; /* PFSYNC_S_x */ 847 u_int8_t sync_updates; 848 int rtableid[2]; /* rtables stack and wire */ 849 u_int8_t min_ttl; 850 u_int8_t set_tos; 851 u_int8_t set_prio[2]; 852 u_int16_t max_mss; 853 u_int8_t pad2[2]; 854 }; 855 856 /* 857 * Unified state structures for pulling states out of the kernel 858 * used by pfsync(4) and the pf(4) ioctl. 859 */ 860 struct pfsync_state_scrub { 861 u_int16_t pfss_flags; 862 u_int8_t pfss_ttl; /* stashed TTL */ 863 #define PFSYNC_SCRUB_FLAG_VALID 0x01 864 u_int8_t scrub_flag; 865 u_int32_t pfss_ts_mod; /* timestamp modulation */ 866 } __packed; 867 868 struct pfsync_state_peer { 869 struct pfsync_state_scrub scrub; /* state is scrubbed */ 870 u_int32_t seqlo; /* Max sequence number sent */ 871 u_int32_t seqhi; /* Max the other end ACKd + win */ 872 u_int32_t seqdiff; /* Sequence number modulator */ 873 u_int16_t max_win; /* largest window (pre scaling) */ 874 u_int16_t mss; /* Maximum segment size option */ 875 u_int8_t state; /* active state level */ 876 u_int8_t wscale; /* window scaling factor */ 877 u_int8_t pad[6]; 878 } __packed; 879 880 struct pfsync_state_key { 881 struct pf_addr addr[2]; 882 u_int16_t port[2]; 883 u_int16_t rdomain; 884 sa_family_t af; 885 u_int8_t pad; 886 }; 887 888 struct pfsync_state { 889 u_int64_t id; 890 char ifname[IFNAMSIZ]; 891 struct pfsync_state_key key[2]; 892 struct pfsync_state_peer src; 893 struct pfsync_state_peer dst; 894 struct pf_addr rt_addr; 895 u_int32_t rule; 896 u_int32_t anchor; 897 u_int32_t nat_rule; 898 u_int32_t creation; 899 u_int32_t expire; 900 u_int32_t packets[2][2]; 901 u_int32_t bytes[2][2]; 902 u_int32_t creatorid; 903 int32_t rtableid[2]; 904 u_int16_t max_mss; 905 sa_family_t af; 906 u_int8_t proto; 907 u_int8_t direction; 908 u_int8_t log; 909 u_int8_t state_flags; /* XXX remove after 5.0 */ 910 u_int8_t timeout; 911 u_int8_t sync_flags; 912 u_int8_t updates; 913 u_int8_t min_ttl; 914 u_int8_t set_tos; 915 u_int16_t all_state_flags; 916 u_int8_t pad[2]; 917 } __packed; 918 919 #define PFSYNC_FLAG_SRCNODE 0x04 920 #define PFSYNC_FLAG_NATSRCNODE 0x08 921 922 /* for copies to/from network byte order */ 923 /* ioctl interface also uses network byte order */ 924 #define pf_state_peer_hton(s,d) do { \ 925 (d)->seqlo = htonl((s)->seqlo); \ 926 (d)->seqhi = htonl((s)->seqhi); \ 927 (d)->seqdiff = htonl((s)->seqdiff); \ 928 (d)->max_win = htons((s)->max_win); \ 929 (d)->mss = htons((s)->mss); \ 930 (d)->state = (s)->state; \ 931 (d)->wscale = (s)->wscale; \ 932 if ((s)->scrub) { \ 933 (d)->scrub.pfss_flags = \ 934 htons((s)->scrub->pfss_flags & PFSS_TIMESTAMP); \ 935 (d)->scrub.pfss_ttl = (s)->scrub->pfss_ttl; \ 936 (d)->scrub.pfss_ts_mod = htonl((s)->scrub->pfss_ts_mod);\ 937 (d)->scrub.scrub_flag = PFSYNC_SCRUB_FLAG_VALID; \ 938 } \ 939 } while (0) 940 941 #define pf_state_peer_ntoh(s,d) do { \ 942 (d)->seqlo = ntohl((s)->seqlo); \ 943 (d)->seqhi = ntohl((s)->seqhi); \ 944 (d)->seqdiff = ntohl((s)->seqdiff); \ 945 (d)->max_win = ntohs((s)->max_win); \ 946 (d)->mss = ntohs((s)->mss); \ 947 (d)->state = (s)->state; \ 948 (d)->wscale = (s)->wscale; \ 949 if ((s)->scrub.scrub_flag == PFSYNC_SCRUB_FLAG_VALID && \ 950 (d)->scrub != NULL) { \ 951 (d)->scrub->pfss_flags = \ 952 ntohs((s)->scrub.pfss_flags) & PFSS_TIMESTAMP; \ 953 (d)->scrub->pfss_ttl = (s)->scrub.pfss_ttl; \ 954 (d)->scrub->pfss_ts_mod = ntohl((s)->scrub.pfss_ts_mod);\ 955 } \ 956 } while (0) 957 958 #define pf_state_counter_hton(s,d) do { \ 959 d[0] = htonl((s>>32)&0xffffffff); \ 960 d[1] = htonl(s&0xffffffff); \ 961 } while (0) 962 963 #define pf_state_counter_from_pfsync(s) \ 964 (((u_int64_t)(s[0])<<32) | (u_int64_t)(s[1])) 965 966 #define pf_state_counter_ntoh(s,d) do { \ 967 d = ntohl(s[0]); \ 968 d = d<<32; \ 969 d += ntohl(s[1]); \ 970 } while (0) 971 972 TAILQ_HEAD(pf_rulequeue, pf_rule); 973 974 struct pf_anchor; 975 976 struct pf_ruleset { 977 struct { 978 struct pf_rulequeue queues[2]; 979 struct { 980 struct pf_rulequeue *ptr; 981 struct pf_rule **ptr_array; 982 u_int32_t rcount; 983 u_int32_t ticket; 984 int open; 985 } active, inactive; 986 } rules; 987 struct pf_anchor *anchor; 988 u_int32_t tticket; 989 int tables; 990 int topen; 991 }; 992 993 RB_HEAD(pf_anchor_global, pf_anchor); 994 RB_HEAD(pf_anchor_node, pf_anchor); 995 struct pf_anchor { 996 RB_ENTRY(pf_anchor) entry_global; 997 RB_ENTRY(pf_anchor) entry_node; 998 struct pf_anchor *parent; 999 struct pf_anchor_node children; 1000 char name[PF_ANCHOR_NAME_SIZE]; 1001 char path[MAXPATHLEN]; 1002 struct pf_ruleset ruleset; 1003 int refcnt; /* anchor rules */ 1004 int match; 1005 }; 1006 RB_PROTOTYPE(pf_anchor_global, pf_anchor, entry_global, pf_anchor_compare); 1007 RB_PROTOTYPE(pf_anchor_node, pf_anchor, entry_node, pf_anchor_compare); 1008 1009 #define PF_RESERVED_ANCHOR "_pf" 1010 1011 #define PFR_TFLAG_PERSIST 0x00000001 1012 #define PFR_TFLAG_CONST 0x00000002 1013 #define PFR_TFLAG_ACTIVE 0x00000004 1014 #define PFR_TFLAG_INACTIVE 0x00000008 1015 #define PFR_TFLAG_REFERENCED 0x00000010 1016 #define PFR_TFLAG_REFDANCHOR 0x00000020 1017 #define PFR_TFLAG_COUNTERS 0x00000040 1018 /* Adjust masks below when adding flags. */ 1019 #define PFR_TFLAG_USRMASK 0x00000043 1020 #define PFR_TFLAG_SETMASK 0x0000003C 1021 #define PFR_TFLAG_ALLMASK 0x0000007F 1022 1023 struct pfr_table { 1024 char pfrt_anchor[MAXPATHLEN]; 1025 char pfrt_name[PF_TABLE_NAME_SIZE]; 1026 u_int32_t pfrt_flags; 1027 u_int8_t pfrt_fback; 1028 }; 1029 1030 enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED, 1031 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE, 1032 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_NOCOUNT, PFR_FB_MAX }; 1033 1034 struct pfr_addr { 1035 union { 1036 struct in_addr _pfra_ip4addr; 1037 struct in6_addr _pfra_ip6addr; 1038 } pfra_u; 1039 char pfra_ifname[IFNAMSIZ]; 1040 u_int32_t pfra_states; 1041 u_int16_t pfra_weight; 1042 u_int8_t pfra_af; 1043 u_int8_t pfra_net; 1044 u_int8_t pfra_not; 1045 u_int8_t pfra_fback; 1046 u_int8_t pfra_type; 1047 u_int8_t pad[7]; 1048 }; 1049 #define pfra_ip4addr pfra_u._pfra_ip4addr 1050 #define pfra_ip6addr pfra_u._pfra_ip6addr 1051 1052 enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX }; 1053 enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX }; 1054 #define PFR_OP_XPASS PFR_OP_ADDR_MAX 1055 1056 struct pfr_astats { 1057 struct pfr_addr pfras_a; 1058 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1059 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1060 long pfras_tzero; 1061 }; 1062 1063 enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX }; 1064 1065 struct pfr_tstats { 1066 struct pfr_table pfrts_t; 1067 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1068 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1069 u_int64_t pfrts_match; 1070 u_int64_t pfrts_nomatch; 1071 long pfrts_tzero; 1072 int pfrts_cnt; 1073 int pfrts_refcnt[PFR_REFCNT_MAX]; 1074 }; 1075 #define pfrts_name pfrts_t.pfrt_name 1076 #define pfrts_flags pfrts_t.pfrt_flags 1077 1078 struct pfr_kcounters { 1079 u_int64_t pfrkc_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1080 u_int64_t pfrkc_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1081 u_int64_t states; 1082 }; 1083 1084 SLIST_HEAD(pfr_kentryworkq, pfr_kentry); 1085 struct _pfr_kentry { 1086 struct radix_node _pfrke_node[2]; 1087 union sockaddr_union _pfrke_sa; 1088 SLIST_ENTRY(pfr_kentry) _pfrke_workq; 1089 struct pfr_kcounters *_pfrke_counters; 1090 long _pfrke_tzero; 1091 u_int8_t _pfrke_af; 1092 u_int8_t _pfrke_net; 1093 u_int8_t _pfrke_flags; 1094 u_int8_t _pfrke_type; 1095 }; 1096 #define PFRKE_FLAG_NOT 0x01 1097 #define PFRKE_FLAG_MARK 0x02 1098 1099 /* pfrke_type */ 1100 enum { PFRKE_PLAIN, PFRKE_ROUTE, PFRKE_COST, PFRKE_MAX }; 1101 1102 struct pfr_kentry { 1103 union { 1104 struct _pfr_kentry _ke; 1105 } u; 1106 }; 1107 #define pfrke_node u._ke._pfrke_node 1108 #define pfrke_sa u._ke._pfrke_sa 1109 #define pfrke_workq u._ke._pfrke_workq 1110 #define pfrke_counters u._ke._pfrke_counters 1111 #define pfrke_tzero u._ke._pfrke_tzero 1112 #define pfrke_af u._ke._pfrke_af 1113 #define pfrke_net u._ke._pfrke_net 1114 #define pfrke_flags u._ke._pfrke_flags 1115 #define pfrke_type u._ke._pfrke_type 1116 1117 struct pfr_kentry_route { 1118 union { 1119 struct _pfr_kentry _ke; 1120 } u; 1121 1122 struct pfi_kif *kif; 1123 }; 1124 1125 struct pfr_kentry_cost { 1126 union { 1127 struct _pfr_kentry _ke; 1128 } u; 1129 1130 struct pfi_kif *kif; 1131 /* Above overlaps with pfr_kentry route */ 1132 1133 u_int16_t weight; 1134 }; 1135 1136 struct pfr_kentry_all { 1137 union { 1138 struct _pfr_kentry _ke; 1139 struct pfr_kentry_route kr; 1140 struct pfr_kentry_cost kc; 1141 } u; 1142 }; 1143 #define pfrke_rkif u.kr.kif 1144 1145 SLIST_HEAD(pfr_ktableworkq, pfr_ktable); 1146 RB_HEAD(pfr_ktablehead, pfr_ktable); 1147 struct pfr_ktable { 1148 struct pfr_tstats pfrkt_ts; 1149 RB_ENTRY(pfr_ktable) pfrkt_tree; 1150 SLIST_ENTRY(pfr_ktable) pfrkt_workq; 1151 struct radix_node_head *pfrkt_ip4; 1152 struct radix_node_head *pfrkt_ip6; 1153 struct pfr_ktable *pfrkt_shadow; 1154 struct pfr_ktable *pfrkt_root; 1155 struct pf_ruleset *pfrkt_rs; 1156 long pfrkt_larg; 1157 int pfrkt_nflags; 1158 u_int64_t pfrkt_refcntcost; 1159 u_int16_t pfrkt_gcdweight; 1160 u_int16_t pfrkt_maxweight; 1161 }; 1162 #define pfrkt_t pfrkt_ts.pfrts_t 1163 #define pfrkt_name pfrkt_t.pfrt_name 1164 #define pfrkt_anchor pfrkt_t.pfrt_anchor 1165 #define pfrkt_ruleset pfrkt_t.pfrt_ruleset 1166 #define pfrkt_flags pfrkt_t.pfrt_flags 1167 #define pfrkt_cnt pfrkt_ts.pfrts_cnt 1168 #define pfrkt_refcnt pfrkt_ts.pfrts_refcnt 1169 #define pfrkt_packets pfrkt_ts.pfrts_packets 1170 #define pfrkt_bytes pfrkt_ts.pfrts_bytes 1171 #define pfrkt_match pfrkt_ts.pfrts_match 1172 #define pfrkt_nomatch pfrkt_ts.pfrts_nomatch 1173 #define pfrkt_tzero pfrkt_ts.pfrts_tzero 1174 1175 RB_HEAD(pf_state_tree, pf_state_key); 1176 RB_PROTOTYPE(pf_state_tree, pf_state_key, entry, pf_state_compare_key); 1177 1178 RB_HEAD(pf_state_tree_ext_gwy, pf_state_key); 1179 RB_PROTOTYPE(pf_state_tree_ext_gwy, pf_state_key, 1180 entry_ext_gwy, pf_state_compare_ext_gwy); 1181 1182 RB_HEAD(pfi_ifhead, pfi_kif); 1183 1184 /* state tables */ 1185 extern struct pf_state_tree pf_statetbl; 1186 1187 /* keep synced with pfi_kif, used in RB_FIND */ 1188 struct pfi_kif_cmp { 1189 char pfik_name[IFNAMSIZ]; 1190 }; 1191 1192 struct pfi_kif { 1193 char pfik_name[IFNAMSIZ]; 1194 RB_ENTRY(pfi_kif) pfik_tree; 1195 u_int64_t pfik_packets[2][2][2]; 1196 u_int64_t pfik_bytes[2][2][2]; 1197 u_int32_t pfik_tzero; 1198 int pfik_flags; 1199 int pfik_flags_new; 1200 void *pfik_ah_cookie; 1201 struct ifnet *pfik_ifp; 1202 struct ifg_group *pfik_group; 1203 int pfik_states; 1204 int pfik_rules; 1205 int pfik_routes; 1206 TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs; 1207 }; 1208 1209 enum pfi_kif_refs { 1210 PFI_KIF_REF_NONE, 1211 PFI_KIF_REF_STATE, 1212 PFI_KIF_REF_RULE, 1213 PFI_KIF_REF_ROUTE 1214 }; 1215 1216 #define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */ 1217 1218 struct pf_pdesc { 1219 struct { 1220 int done; 1221 uid_t uid; 1222 gid_t gid; 1223 pid_t pid; 1224 } lookup; 1225 u_int64_t tot_len; /* Make Mickey money */ 1226 union { 1227 struct tcphdr *tcp; 1228 struct udphdr *udp; 1229 struct icmp *icmp; 1230 #ifdef INET6 1231 struct icmp6_hdr *icmp6; 1232 #endif /* INET6 */ 1233 void *any; 1234 } hdr; 1235 1236 struct pf_addr nsaddr; /* src address after NAT */ 1237 struct pf_addr ndaddr; /* dst address after NAT */ 1238 1239 struct pfi_kif *kif; /* incomming interface */ 1240 struct mbuf *m; /* mbuf containing the packet */ 1241 struct ether_header 1242 *eh; 1243 struct pf_addr *src; /* src address */ 1244 struct pf_addr *dst; /* dst address */ 1245 u_int16_t *sport; 1246 u_int16_t *dport; 1247 u_int16_t osport; 1248 u_int16_t odport; 1249 u_int16_t nsport; /* src port after NAT */ 1250 u_int16_t ndport; /* dst port after NAT */ 1251 1252 u_int32_t off; /* protocol header offset */ 1253 u_int32_t hdrlen; /* protocol header length */ 1254 u_int32_t p_len; /* length of protocol payload */ 1255 u_int32_t extoff; /* extentsion header offset */ 1256 u_int32_t fragoff; /* fragment header offset */ 1257 u_int32_t jumbolen; /* length from v6 jumbo header */ 1258 u_int32_t badopts; /* v4 options or v6 routing headers */ 1259 1260 u_int16_t rdomain; /* original routing domain */ 1261 u_int16_t virtual_proto; 1262 #define PF_VPROTO_FRAGMENT 256 1263 sa_family_t af; 1264 sa_family_t naf; 1265 u_int8_t proto; 1266 u_int8_t tos; 1267 u_int8_t ttl; 1268 u_int8_t dir; /* direction */ 1269 u_int8_t sidx; /* key index for source */ 1270 u_int8_t didx; /* key index for destination */ 1271 u_int8_t destchg; /* flag set when destination changed */ 1272 u_int8_t pflog; /* flags for packet logging */ 1273 }; 1274 1275 /* flags for RDR options */ 1276 #define PF_DPORT_RANGE 0x01 /* Dest port uses range */ 1277 #define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */ 1278 1279 /* Reasons code for passing/dropping a packet */ 1280 #define PFRES_MATCH 0 /* Explicit match of a rule */ 1281 #define PFRES_BADOFF 1 /* Bad offset for pull_hdr */ 1282 #define PFRES_FRAG 2 /* Dropping following fragment */ 1283 #define PFRES_SHORT 3 /* Dropping short packet */ 1284 #define PFRES_NORM 4 /* Dropping by normalizer */ 1285 #define PFRES_MEMORY 5 /* Dropped due to lacking mem */ 1286 #define PFRES_TS 6 /* Bad TCP Timestamp (RFC1323) */ 1287 #define PFRES_CONGEST 7 /* Congestion (of ipintrq) */ 1288 #define PFRES_IPOPTIONS 8 /* IP option */ 1289 #define PFRES_PROTCKSUM 9 /* Protocol checksum invalid */ 1290 #define PFRES_BADSTATE 10 /* State mismatch */ 1291 #define PFRES_STATEINS 11 /* State insertion failure */ 1292 #define PFRES_MAXSTATES 12 /* State limit */ 1293 #define PFRES_SRCLIMIT 13 /* Source node/conn limit */ 1294 #define PFRES_SYNPROXY 14 /* SYN proxy */ 1295 #define PFRES_MAX 15 /* total+1 */ 1296 1297 #define PFRES_NAMES { \ 1298 "match", \ 1299 "bad-offset", \ 1300 "fragment", \ 1301 "short", \ 1302 "normalize", \ 1303 "memory", \ 1304 "bad-timestamp", \ 1305 "congestion", \ 1306 "ip-option", \ 1307 "proto-cksum", \ 1308 "state-mismatch", \ 1309 "state-insert", \ 1310 "state-limit", \ 1311 "src-limit", \ 1312 "synproxy", \ 1313 NULL \ 1314 } 1315 1316 /* Counters for other things we want to keep track of */ 1317 #define LCNT_STATES 0 /* states */ 1318 #define LCNT_SRCSTATES 1 /* max-src-states */ 1319 #define LCNT_SRCNODES 2 /* max-src-nodes */ 1320 #define LCNT_SRCCONN 3 /* max-src-conn */ 1321 #define LCNT_SRCCONNRATE 4 /* max-src-conn-rate */ 1322 #define LCNT_OVERLOAD_TABLE 5 /* entry added to overload table */ 1323 #define LCNT_OVERLOAD_FLUSH 6 /* state entries flushed */ 1324 #define LCNT_MAX 7 /* total+1 */ 1325 1326 #define LCNT_NAMES { \ 1327 "max states per rule", \ 1328 "max-src-states", \ 1329 "max-src-nodes", \ 1330 "max-src-conn", \ 1331 "max-src-conn-rate", \ 1332 "overload table insertion", \ 1333 "overload flush states", \ 1334 NULL \ 1335 } 1336 1337 /* UDP state enumeration */ 1338 #define PFUDPS_NO_TRAFFIC 0 1339 #define PFUDPS_SINGLE 1 1340 #define PFUDPS_MULTIPLE 2 1341 1342 #define PFUDPS_NSTATES 3 /* number of state levels */ 1343 1344 #define PFUDPS_NAMES { \ 1345 "NO_TRAFFIC", \ 1346 "SINGLE", \ 1347 "MULTIPLE", \ 1348 NULL \ 1349 } 1350 1351 /* Other protocol state enumeration */ 1352 #define PFOTHERS_NO_TRAFFIC 0 1353 #define PFOTHERS_SINGLE 1 1354 #define PFOTHERS_MULTIPLE 2 1355 1356 #define PFOTHERS_NSTATES 3 /* number of state levels */ 1357 1358 #define PFOTHERS_NAMES { \ 1359 "NO_TRAFFIC", \ 1360 "SINGLE", \ 1361 "MULTIPLE", \ 1362 NULL \ 1363 } 1364 1365 #define FCNT_STATE_SEARCH 0 1366 #define FCNT_STATE_INSERT 1 1367 #define FCNT_STATE_REMOVALS 2 1368 #define FCNT_MAX 3 1369 1370 #define SCNT_SRC_NODE_SEARCH 0 1371 #define SCNT_SRC_NODE_INSERT 1 1372 #define SCNT_SRC_NODE_REMOVALS 2 1373 #define SCNT_MAX 3 1374 1375 #define ACTION_SET(a, x) \ 1376 do { \ 1377 if ((a) != NULL) \ 1378 *(a) = (x); \ 1379 } while (0) 1380 1381 #define REASON_SET(a, x) \ 1382 do { \ 1383 if ((void *)(a) != NULL) \ 1384 *(a) = (x); \ 1385 if (x < PFRES_MAX) \ 1386 pf_status.counters[x]++; \ 1387 } while (0) 1388 1389 struct pf_status { 1390 u_int64_t counters[PFRES_MAX]; 1391 u_int64_t lcounters[LCNT_MAX]; /* limit counters */ 1392 u_int64_t fcounters[FCNT_MAX]; 1393 u_int64_t scounters[SCNT_MAX]; 1394 u_int64_t pcounters[2][2][3]; 1395 u_int64_t bcounters[2][2]; 1396 u_int64_t stateid; 1397 u_int32_t running; 1398 u_int32_t states; 1399 u_int32_t src_nodes; 1400 u_int32_t since; 1401 u_int32_t debug; 1402 u_int32_t hostid; 1403 u_int32_t reass; /* reassembly */ 1404 char ifname[IFNAMSIZ]; 1405 u_int8_t pf_chksum[PF_MD5_DIGEST_LENGTH]; 1406 }; 1407 1408 #define PF_REASS_ENABLED 0x01 1409 #define PF_REASS_NODF 0x02 1410 1411 struct cbq_opts { 1412 u_int minburst; 1413 u_int maxburst; 1414 u_int pktsize; 1415 u_int maxpktsize; 1416 u_int ns_per_byte; 1417 u_int maxidle; 1418 int minidle; 1419 u_int offtime; 1420 int flags; 1421 }; 1422 1423 struct priq_opts { 1424 int flags; 1425 }; 1426 1427 struct hfsc_opts { 1428 /* real-time service curve */ 1429 u_int rtsc_m1; /* slope of the 1st segment in bps */ 1430 u_int rtsc_d; /* the x-projection of m1 in msec */ 1431 u_int rtsc_m2; /* slope of the 2nd segment in bps */ 1432 /* link-sharing service curve */ 1433 u_int lssc_m1; 1434 u_int lssc_d; 1435 u_int lssc_m2; 1436 /* upper-limit service curve */ 1437 u_int ulsc_m1; 1438 u_int ulsc_d; 1439 u_int ulsc_m2; 1440 int flags; 1441 }; 1442 1443 struct pf_altq { 1444 char ifname[IFNAMSIZ]; 1445 1446 void *altq_disc; /* discipline-specific state */ 1447 TAILQ_ENTRY(pf_altq) entries; 1448 1449 /* scheduler spec */ 1450 u_int8_t scheduler; /* scheduler type */ 1451 u_int16_t tbrsize; /* tokenbucket regulator size */ 1452 u_int32_t ifbandwidth; /* interface bandwidth */ 1453 1454 /* queue spec */ 1455 char qname[PF_QNAME_SIZE]; /* queue name */ 1456 char parent[PF_QNAME_SIZE]; /* parent name */ 1457 u_int32_t parent_qid; /* parent queue id */ 1458 u_int32_t bandwidth; /* queue bandwidth */ 1459 u_int8_t priority; /* priority */ 1460 u_int16_t qlimit; /* queue size limit */ 1461 u_int16_t flags; /* misc flags */ 1462 union { 1463 struct cbq_opts cbq_opts; 1464 struct priq_opts priq_opts; 1465 struct hfsc_opts hfsc_opts; 1466 } pq_u; 1467 1468 u_int32_t qid; /* return value */ 1469 }; 1470 1471 struct pf_tagname { 1472 TAILQ_ENTRY(pf_tagname) entries; 1473 char name[PF_TAG_NAME_SIZE]; 1474 u_int16_t tag; 1475 int ref; 1476 }; 1477 1478 struct pf_divert { 1479 struct pf_addr addr; 1480 u_int16_t port; 1481 u_int16_t rdomain; 1482 }; 1483 1484 #define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */ 1485 #define PFFRAG_FRAG_HIWAT 1000 /* Number of fragmented packets */ 1486 #define PFFRAG_FRCENT_HIWAT 50000 /* Number of fragment cache entries */ 1487 #define PFFRAG_FRCACHE_HIWAT 10000 /* Number of fragment descriptors */ 1488 1489 #define PFR_KTABLE_HIWAT 1000 /* Number of tables */ 1490 #define PFR_KENTRY_HIWAT 200000 /* Number of table entries */ 1491 #define PFR_KENTRY_HIWAT_SMALL 100000 /* Number of entries for tiny hosts */ 1492 1493 /* 1494 * ioctl parameter structures 1495 */ 1496 1497 struct pfioc_rule { 1498 u_int32_t action; 1499 u_int32_t ticket; 1500 u_int32_t nr; 1501 char anchor[MAXPATHLEN]; 1502 char anchor_call[MAXPATHLEN]; 1503 struct pf_rule rule; 1504 }; 1505 1506 struct pfioc_natlook { 1507 struct pf_addr saddr; 1508 struct pf_addr daddr; 1509 struct pf_addr rsaddr; 1510 struct pf_addr rdaddr; 1511 u_int16_t rdomain; 1512 u_int16_t rrdomain; 1513 u_int16_t sport; 1514 u_int16_t dport; 1515 u_int16_t rsport; 1516 u_int16_t rdport; 1517 sa_family_t af; 1518 u_int8_t proto; 1519 u_int8_t direction; 1520 }; 1521 1522 struct pfioc_state { 1523 struct pfsync_state state; 1524 }; 1525 1526 struct pfioc_src_node_kill { 1527 sa_family_t psnk_af; 1528 struct pf_rule_addr psnk_src; 1529 struct pf_rule_addr psnk_dst; 1530 u_int psnk_killed; 1531 }; 1532 1533 struct pfioc_state_kill { 1534 struct pf_state_cmp psk_pfcmp; 1535 sa_family_t psk_af; 1536 int psk_proto; 1537 struct pf_rule_addr psk_src; 1538 struct pf_rule_addr psk_dst; 1539 char psk_ifname[IFNAMSIZ]; 1540 char psk_label[PF_RULE_LABEL_SIZE]; 1541 u_int psk_killed; 1542 u_int16_t psk_rdomain; 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_tm { 1566 int timeout; 1567 int seconds; 1568 }; 1569 1570 struct pfioc_limit { 1571 int index; 1572 unsigned limit; 1573 }; 1574 1575 struct pfioc_altq { 1576 u_int32_t action; 1577 u_int32_t ticket; 1578 u_int32_t nr; 1579 struct pf_altq altq; 1580 }; 1581 1582 struct pfioc_qstats { 1583 u_int32_t ticket; 1584 u_int32_t nr; 1585 void *buf; 1586 int nbytes; 1587 u_int8_t scheduler; 1588 }; 1589 1590 struct pfioc_ruleset { 1591 u_int32_t nr; 1592 char path[MAXPATHLEN]; 1593 char name[PF_ANCHOR_NAME_SIZE]; 1594 }; 1595 1596 struct pfioc_trans { 1597 int size; /* number of elements */ 1598 int esize; /* size of each element in bytes */ 1599 struct pfioc_trans_e { 1600 int type; 1601 char anchor[MAXPATHLEN]; 1602 u_int32_t ticket; 1603 } *array; 1604 }; 1605 1606 #define PFR_FLAG_DUMMY 0x00000002 1607 #define PFR_FLAG_FEEDBACK 0x00000004 1608 #define PFR_FLAG_CLSTATS 0x00000008 1609 #define PFR_FLAG_ADDRSTOO 0x00000010 1610 #define PFR_FLAG_REPLACE 0x00000020 1611 #define PFR_FLAG_ALLRSETS 0x00000040 1612 #define PFR_FLAG_ALLMASK 0x0000007F 1613 #ifdef _KERNEL 1614 #define PFR_FLAG_USERIOCTL 0x10000000 1615 #endif 1616 1617 struct pfioc_table { 1618 struct pfr_table pfrio_table; 1619 void *pfrio_buffer; 1620 int pfrio_esize; 1621 int pfrio_size; 1622 int pfrio_size2; 1623 int pfrio_nadd; 1624 int pfrio_ndel; 1625 int pfrio_nchange; 1626 int pfrio_flags; 1627 u_int32_t pfrio_ticket; 1628 }; 1629 #define pfrio_exists pfrio_nadd 1630 #define pfrio_nzero pfrio_nadd 1631 #define pfrio_nmatch pfrio_nadd 1632 #define pfrio_naddr pfrio_size2 1633 #define pfrio_setflag pfrio_size2 1634 #define pfrio_clrflag pfrio_nadd 1635 1636 struct pfioc_iface { 1637 char pfiio_name[IFNAMSIZ]; 1638 void *pfiio_buffer; 1639 int pfiio_esize; 1640 int pfiio_size; 1641 int pfiio_nzero; 1642 int pfiio_flags; 1643 }; 1644 1645 1646 /* 1647 * ioctl operations 1648 */ 1649 1650 #define DIOCSTART _IO ('D', 1) 1651 #define DIOCSTOP _IO ('D', 2) 1652 #define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule) 1653 #define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule) 1654 #define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule) 1655 /* XXX cut 8 - 17 */ 1656 #define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill) 1657 #define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state) 1658 #define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_iface) 1659 #define DIOCGETSTATUS _IOWR('D', 21, struct pf_status) 1660 #define DIOCCLRSTATUS _IOWR('D', 22, struct pfioc_iface) 1661 #define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook) 1662 #define DIOCSETDEBUG _IOWR('D', 24, u_int32_t) 1663 #define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states) 1664 #define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule) 1665 /* XXX cut 26 - 28 */ 1666 #define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm) 1667 #define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm) 1668 #define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state) 1669 #define DIOCCLRRULECTRS _IO ('D', 38) 1670 #define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit) 1671 #define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit) 1672 #define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill) 1673 #define DIOCSTARTALTQ _IO ('D', 42) 1674 #define DIOCSTOPALTQ _IO ('D', 43) 1675 #define DIOCADDALTQ _IOWR('D', 45, struct pfioc_altq) 1676 #define DIOCGETALTQS _IOWR('D', 47, struct pfioc_altq) 1677 #define DIOCGETALTQ _IOWR('D', 48, struct pfioc_altq) 1678 #define DIOCCHANGEALTQ _IOWR('D', 49, struct pfioc_altq) 1679 #define DIOCGETQSTATS _IOWR('D', 50, struct pfioc_qstats) 1680 /* XXX cut 51 - 57 */ 1681 #define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset) 1682 #define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset) 1683 #define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table) 1684 #define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table) 1685 #define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table) 1686 #define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table) 1687 #define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table) 1688 #define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table) 1689 #define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table) 1690 #define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table) 1691 #define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table) 1692 #define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table) 1693 #define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table) 1694 #define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table) 1695 #define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table) 1696 #define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table) 1697 #define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table) 1698 #define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table) 1699 #define DIOCOSFPFLUSH _IO('D', 78) 1700 #define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl) 1701 #define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl) 1702 #define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans) 1703 #define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans) 1704 #define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans) 1705 #define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes) 1706 #define DIOCCLRSRCNODES _IO('D', 85) 1707 #define DIOCSETHOSTID _IOWR('D', 86, u_int32_t) 1708 #define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface) 1709 #define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface) 1710 #define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface) 1711 #define DIOCKILLSRCNODES _IOWR('D', 91, struct pfioc_src_node_kill) 1712 #define DIOCSETREASS _IOWR('D', 92, u_int32_t) 1713 1714 #ifdef _KERNEL 1715 RB_HEAD(pf_src_tree, pf_src_node); 1716 RB_PROTOTYPE(pf_src_tree, pf_src_node, entry, pf_src_compare); 1717 extern struct pf_src_tree tree_src_tracking; 1718 1719 RB_HEAD(pf_state_tree_id, pf_state); 1720 RB_PROTOTYPE(pf_state_tree_id, pf_state, 1721 entry_id, pf_state_compare_id); 1722 extern struct pf_state_tree_id tree_id; 1723 extern struct pf_state_queue state_list; 1724 1725 TAILQ_HEAD(pf_altqqueue, pf_altq); 1726 extern struct pf_altqqueue pf_altqs[2]; 1727 1728 extern u_int32_t ticket_altqs_active; 1729 extern u_int32_t ticket_altqs_inactive; 1730 extern int altqs_inactive_open; 1731 extern u_int32_t ticket_pabuf; 1732 extern struct pf_altqqueue *pf_altqs_active; 1733 extern struct pf_altqqueue *pf_altqs_inactive; 1734 extern int pf_tbladdr_setup(struct pf_ruleset *, 1735 struct pf_addr_wrap *); 1736 extern void pf_tbladdr_remove(struct pf_addr_wrap *); 1737 extern void pf_tbladdr_copyout(struct pf_addr_wrap *); 1738 extern void pf_calc_skip_steps(struct pf_rulequeue *); 1739 extern struct pool pf_src_tree_pl, pf_sn_item_pl, pf_rule_pl; 1740 extern struct pool pf_state_pl, pf_state_key_pl, pf_state_item_pl, 1741 pf_altq_pl, pf_rule_item_pl; 1742 extern struct pool pf_state_scrub_pl; 1743 extern void pf_purge_thread(void *); 1744 extern void pf_purge_expired_src_nodes(int); 1745 extern void pf_purge_expired_states(u_int32_t); 1746 extern void pf_unlink_state(struct pf_state *); 1747 extern void pf_free_state(struct pf_state *); 1748 extern int pf_state_insert(struct pfi_kif *, 1749 struct pf_state_key *, 1750 struct pf_state_key *, 1751 struct pf_state *); 1752 int pf_insert_src_node(struct pf_src_node **, 1753 struct pf_rule *, enum pf_sn_types, 1754 sa_family_t, struct pf_addr *, 1755 struct pf_addr *, int); 1756 void pf_remove_src_node(struct pf_src_node *); 1757 struct pf_src_node *pf_get_src_node(struct pf_state *, 1758 enum pf_sn_types); 1759 void pf_src_tree_remove_state(struct pf_state *); 1760 void pf_state_rm_src_node(struct pf_state *, 1761 struct pf_src_node *); 1762 1763 extern struct pf_state *pf_find_state_byid(struct pf_state_cmp *); 1764 extern struct pf_state *pf_find_state_all(struct pf_state_key_cmp *, 1765 u_int, int *); 1766 extern void pf_state_export(struct pfsync_state *, 1767 struct pf_state *); 1768 extern void pf_print_state(struct pf_state *); 1769 extern void pf_print_flags(u_int8_t); 1770 extern u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t, 1771 u_int8_t); 1772 1773 extern struct ifnet *sync_ifp; 1774 extern struct pf_rule pf_default_rule; 1775 extern void pf_addrcpy(struct pf_addr *, struct pf_addr *, 1776 u_int8_t); 1777 void pf_rm_rule(struct pf_rulequeue *, 1778 struct pf_rule *); 1779 void pf_purge_rule(struct pf_ruleset *, 1780 struct pf_rule *); 1781 struct pf_divert *pf_find_divert(struct mbuf *); 1782 int pf_setup_pdesc(struct pf_pdesc *, void *, 1783 sa_family_t, int, struct pfi_kif *, 1784 struct mbuf *, u_short *); 1785 1786 int pf_test(sa_family_t, int, struct ifnet *, struct mbuf **, 1787 struct ether_header *); 1788 1789 void pf_poolmask(struct pf_addr *, struct pf_addr*, 1790 struct pf_addr *, struct pf_addr *, sa_family_t); 1791 void pf_addr_inc(struct pf_addr *, sa_family_t); 1792 1793 void *pf_pull_hdr(struct mbuf *, int, void *, int, u_short *, u_short *, 1794 sa_family_t); 1795 void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t); 1796 int pflog_packet(struct pf_pdesc *, u_int8_t, struct pf_rule *, 1797 struct pf_rule *, struct pf_ruleset *); 1798 void pf_send_deferred_syn(struct pf_state *); 1799 int pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *, 1800 struct pf_addr *, sa_family_t); 1801 int pf_match_addr_range(struct pf_addr *, struct pf_addr *, 1802 struct pf_addr *, sa_family_t); 1803 int pf_match(u_int8_t, u_int32_t, u_int32_t, u_int32_t); 1804 int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t); 1805 int pf_match_uid(u_int8_t, uid_t, uid_t, uid_t); 1806 int pf_match_gid(u_int8_t, gid_t, gid_t, gid_t); 1807 1808 int pf_refragment6(struct mbuf **, struct m_tag *mtag, int); 1809 void pf_normalize_init(void); 1810 int pf_normalize_ip(struct pf_pdesc *, u_short *); 1811 int pf_normalize_ip6(struct pf_pdesc *, u_short *); 1812 int pf_normalize_tcp(struct pf_pdesc *); 1813 void pf_normalize_tcp_cleanup(struct pf_state *); 1814 int pf_normalize_tcp_init(struct pf_pdesc *, struct pf_state_peer *, 1815 struct pf_state_peer *); 1816 int pf_normalize_tcp_stateful(struct pf_pdesc *, u_short *, 1817 struct pf_state *, struct pf_state_peer *, struct pf_state_peer *, 1818 int *); 1819 int pf_normalize_mss(struct pf_pdesc *, u_int16_t); 1820 void pf_scrub(struct mbuf *, u_int16_t, sa_family_t, u_int8_t, u_int8_t); 1821 u_int32_t 1822 pf_state_expires(const struct pf_state *); 1823 void pf_purge_expired_fragments(void); 1824 int pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kif *, 1825 int); 1826 int pf_rtlabel_match(struct pf_addr *, sa_family_t, struct pf_addr_wrap *, 1827 int); 1828 int pf_socket_lookup(struct pf_pdesc *); 1829 struct pf_state_key *pf_alloc_state_key(int); 1830 void pf_pkt_addr_changed(struct mbuf *); 1831 int pf_state_key_attach(struct pf_state_key *, struct pf_state *, int); 1832 int pf_translate(struct pf_pdesc *, struct pf_addr *, u_int16_t, 1833 struct pf_addr *, u_int16_t, u_int16_t, int); 1834 int pf_translate_af(struct pf_pdesc *); 1835 void pf_route(struct mbuf **, struct pf_rule *, int, 1836 struct ifnet *, struct pf_state *); 1837 void pf_route6(struct mbuf **, struct pf_rule *, int, 1838 struct ifnet *, struct pf_state *); 1839 1840 void pfr_initialize(void); 1841 int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t); 1842 void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t, 1843 u_int64_t, int, int, int); 1844 int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, 1845 struct pf_addr **, struct pf_addr **, struct pfi_kif **, 1846 u_int64_t *, u_int16_t *, int *, 1847 sa_family_t, int (*)(sa_family_t, struct pf_addr *)); 1848 int pfr_states_increase(struct pfr_ktable *, struct pf_addr *, int); 1849 int pfr_states_decrease(struct pfr_ktable *, struct pf_addr *, int); 1850 struct pfr_kentry * 1851 pfr_kentry_byaddr(struct pfr_ktable *, struct pf_addr *, sa_family_t, 1852 int); 1853 void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *); 1854 struct pfr_ktable * 1855 pfr_attach_table(struct pf_ruleset *, char *, int); 1856 void pfr_detach_table(struct pfr_ktable *); 1857 int pfr_clr_tables(struct pfr_table *, int *, int); 1858 int pfr_add_tables(struct pfr_table *, int, int *, int); 1859 int pfr_del_tables(struct pfr_table *, int, int *, int); 1860 int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int); 1861 int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int); 1862 int pfr_clr_tstats(struct pfr_table *, int, int *, int); 1863 int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int); 1864 int pfr_clr_addrs(struct pfr_table *, int *, int); 1865 int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *, long); 1866 int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1867 int); 1868 int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1869 int); 1870 int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1871 int *, int *, int *, int, u_int32_t); 1872 int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int); 1873 int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int); 1874 int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *, 1875 int); 1876 int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1877 int); 1878 int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int); 1879 int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int); 1880 int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int); 1881 int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *, 1882 int *, u_int32_t, int); 1883 1884 extern struct pfi_kif *pfi_all; 1885 1886 void pfi_initialize(void); 1887 struct pfi_kif *pfi_kif_get(const char *); 1888 void pfi_kif_ref(struct pfi_kif *, enum pfi_kif_refs); 1889 void pfi_kif_unref(struct pfi_kif *, enum pfi_kif_refs); 1890 int pfi_kif_match(struct pfi_kif *, struct pfi_kif *); 1891 void pfi_attach_ifnet(struct ifnet *); 1892 void pfi_detach_ifnet(struct ifnet *); 1893 void pfi_attach_ifgroup(struct ifg_group *); 1894 void pfi_detach_ifgroup(struct ifg_group *); 1895 void pfi_group_change(const char *); 1896 int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *, 1897 sa_family_t); 1898 int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t); 1899 void pfi_dynaddr_remove(struct pf_addr_wrap *); 1900 void pfi_dynaddr_copyout(struct pf_addr_wrap *); 1901 void pfi_update_status(const char *, struct pf_status *); 1902 int pfi_get_ifaces(const char *, struct pfi_kif *, int *); 1903 int pfi_set_flags(const char *, int); 1904 int pfi_clear_flags(const char *, int); 1905 void pfi_xcommit(void); 1906 1907 int pf_match_tag(struct mbuf *, struct pf_rule *, int *); 1908 u_int16_t pf_tagname2tag(char *); 1909 void pf_tag2tagname(u_int16_t, char *); 1910 void pf_tag_ref(u_int16_t); 1911 void pf_tag_unref(u_int16_t); 1912 void pf_tag_packet(struct mbuf *, int, int); 1913 int pf_addr_compare(struct pf_addr *, struct pf_addr *, 1914 sa_family_t); 1915 1916 extern struct pf_status pf_status; 1917 extern struct pool pf_frent_pl, pf_frag_pl; 1918 extern struct rwlock pf_consistency_lock; 1919 1920 struct pf_pool_limit { 1921 void *pp; 1922 unsigned limit; 1923 unsigned limit_new; 1924 }; 1925 extern struct pf_pool_limit pf_pool_limits[PF_LIMIT_MAX]; 1926 1927 #endif /* _KERNEL */ 1928 1929 extern struct pf_anchor_global pf_anchors; 1930 extern struct pf_anchor pf_main_anchor; 1931 #define pf_main_ruleset pf_main_anchor.ruleset 1932 1933 /* these ruleset functions can be linked into userland programs (pfctl) */ 1934 void pf_init_ruleset(struct pf_ruleset *); 1935 int pf_anchor_setup(struct pf_rule *, 1936 const struct pf_ruleset *, const char *); 1937 int pf_anchor_copyout(const struct pf_ruleset *, 1938 const struct pf_rule *, struct pfioc_rule *); 1939 void pf_anchor_remove(struct pf_rule *); 1940 void pf_remove_if_empty_ruleset(struct pf_ruleset *); 1941 struct pf_anchor *pf_find_anchor(const char *); 1942 struct pf_ruleset *pf_find_ruleset(const char *); 1943 struct pf_ruleset *pf_find_or_create_ruleset(const char *); 1944 void pf_rs_initialize(void); 1945 1946 #ifdef _KERNEL 1947 int pf_anchor_copyout(const struct pf_ruleset *, 1948 const struct pf_rule *, struct pfioc_rule *); 1949 void pf_anchor_remove(struct pf_rule *); 1950 1951 #endif /* _KERNEL */ 1952 1953 /* The fingerprint functions can be linked into userland programs (tcpdump) */ 1954 int pf_osfp_add(struct pf_osfp_ioctl *); 1955 #ifdef _KERNEL 1956 struct pf_osfp_enlist * 1957 pf_osfp_fingerprint(struct pf_pdesc *); 1958 #endif /* _KERNEL */ 1959 struct pf_osfp_enlist * 1960 pf_osfp_fingerprint_hdr(const struct ip *, const struct ip6_hdr *, 1961 const struct tcphdr *); 1962 void pf_osfp_flush(void); 1963 int pf_osfp_get(struct pf_osfp_ioctl *); 1964 void pf_osfp_initialize(void); 1965 int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t); 1966 struct pf_os_fingerprint * 1967 pf_osfp_validate(void); 1968 1969 #ifdef _KERNEL 1970 void pf_print_host(struct pf_addr *, u_int16_t, u_int8_t); 1971 1972 void pf_step_into_anchor(int *, struct pf_ruleset **, 1973 struct pf_rule **, struct pf_rule **, int *); 1974 int pf_step_out_of_anchor(int *, struct pf_ruleset **, 1975 struct pf_rule **, struct pf_rule **, 1976 int *); 1977 1978 int pf_get_transaddr(struct pf_rule *, struct pf_pdesc *, 1979 struct pf_src_node **, struct pf_rule **); 1980 1981 int pf_map_addr(sa_family_t, struct pf_rule *, 1982 struct pf_addr *, struct pf_addr *, 1983 struct pf_addr *, struct pf_src_node **, 1984 struct pf_pool *, enum pf_sn_types); 1985 1986 int pf_postprocess_addr(struct pf_state *); 1987 1988 #endif /* _KERNEL */ 1989 1990 1991 #endif /* _NET_PFVAR_H_ */ 1992