1 /* $OpenBSD: pfvar.h,v 1.344 2011/08/30 00:40:47 mikeb 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 }; 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 PFTM_UNTIL_PACKET }; 87 88 /* PFTM default values */ 89 #define PFTM_TCP_FIRST_PACKET_VAL 120 /* First TCP packet */ 90 #define PFTM_TCP_OPENING_VAL 30 /* No response yet */ 91 #define PFTM_TCP_ESTABLISHED_VAL 24*60*60/* Established */ 92 #define PFTM_TCP_CLOSING_VAL 15 * 60 /* Half closed */ 93 #define PFTM_TCP_FIN_WAIT_VAL 45 /* Got both FINs */ 94 #define PFTM_TCP_CLOSED_VAL 90 /* Got a RST */ 95 #define PFTM_UDP_FIRST_PACKET_VAL 60 /* First UDP packet */ 96 #define PFTM_UDP_SINGLE_VAL 30 /* Unidirectional */ 97 #define PFTM_UDP_MULTIPLE_VAL 60 /* Bidirectional */ 98 #define PFTM_ICMP_FIRST_PACKET_VAL 20 /* First ICMP packet */ 99 #define PFTM_ICMP_ERROR_REPLY_VAL 10 /* Got error response */ 100 #define PFTM_OTHER_FIRST_PACKET_VAL 60 /* First packet */ 101 #define PFTM_OTHER_SINGLE_VAL 30 /* Unidirectional */ 102 #define PFTM_OTHER_MULTIPLE_VAL 60 /* Bidirectional */ 103 #define PFTM_FRAG_VAL 30 /* Fragment expire */ 104 #define PFTM_INTERVAL_VAL 10 /* Expire interval */ 105 #define PFTM_SRC_NODE_VAL 0 /* Source tracking */ 106 #define PFTM_TS_DIFF_VAL 30 /* Allowed TS diff */ 107 108 enum { PF_NOPFROUTE, PF_ROUTETO, PF_DUPTO, PF_REPLYTO }; 109 enum { PF_LIMIT_STATES, PF_LIMIT_SRC_NODES, PF_LIMIT_FRAGS, 110 PF_LIMIT_TABLES, PF_LIMIT_TABLE_ENTRIES, PF_LIMIT_MAX }; 111 #define PF_POOL_IDMASK 0x0f 112 enum { PF_POOL_NONE, PF_POOL_BITMASK, PF_POOL_RANDOM, 113 PF_POOL_SRCHASH, PF_POOL_ROUNDROBIN, PF_POOL_LEASTSTATES }; 114 enum { PF_ADDR_ADDRMASK, PF_ADDR_NOROUTE, PF_ADDR_DYNIFTL, 115 PF_ADDR_TABLE, PF_ADDR_RTLABEL, PF_ADDR_URPFFAILED, 116 PF_ADDR_RANGE, PF_ADDR_NONE }; 117 #define PF_POOL_TYPEMASK 0x0f 118 #define PF_POOL_STICKYADDR 0x20 119 #define PF_WSCALE_FLAG 0x80 120 #define PF_WSCALE_MASK 0x0f 121 122 #define PF_LOG 0x01 123 #define PF_LOG_ALL 0x02 124 #define PF_LOG_SOCKET_LOOKUP 0x04 125 #define PF_LOG_FORCE 0x08 126 #define PF_LOG_MATCHES 0x10 127 128 struct pf_addr { 129 union { 130 struct in_addr v4; 131 struct in6_addr v6; 132 u_int8_t addr8[16]; 133 u_int16_t addr16[8]; 134 u_int32_t addr32[4]; 135 } pfa; /* 128-bit address */ 136 #define v4 pfa.v4 137 #define v6 pfa.v6 138 #define addr8 pfa.addr8 139 #define addr16 pfa.addr16 140 #define addr32 pfa.addr32 141 }; 142 143 #define PF_TABLE_NAME_SIZE 32 144 145 #define PFI_AFLAG_NETWORK 0x01 146 #define PFI_AFLAG_BROADCAST 0x02 147 #define PFI_AFLAG_PEER 0x04 148 #define PFI_AFLAG_MODEMASK 0x07 149 #define PFI_AFLAG_NOALIAS 0x08 150 151 struct pf_addr_wrap { 152 union { 153 struct { 154 struct pf_addr addr; 155 struct pf_addr mask; 156 } a; 157 char ifname[IFNAMSIZ]; 158 char tblname[PF_TABLE_NAME_SIZE]; 159 char rtlabelname[RTLABEL_LEN]; 160 u_int32_t rtlabel; 161 } v; 162 union { 163 struct pfi_dynaddr *dyn; 164 struct pfr_ktable *tbl; 165 int dyncnt; 166 int tblcnt; 167 } p; 168 u_int8_t type; /* PF_ADDR_* */ 169 u_int8_t iflags; /* PFI_AFLAG_* */ 170 }; 171 172 #ifdef _KERNEL 173 174 struct pfi_dynaddr { 175 TAILQ_ENTRY(pfi_dynaddr) entry; 176 struct pf_addr pfid_addr4; 177 struct pf_addr pfid_mask4; 178 struct pf_addr pfid_addr6; 179 struct pf_addr pfid_mask6; 180 struct pfr_ktable *pfid_kt; 181 struct pfi_kif *pfid_kif; 182 void *pfid_hook_cookie; 183 int pfid_net; /* mask or 128 */ 184 int pfid_acnt4; /* address count IPv4 */ 185 int pfid_acnt6; /* address count IPv6 */ 186 sa_family_t pfid_af; /* rule af */ 187 u_int8_t pfid_iflags; /* PFI_AFLAG_* */ 188 }; 189 #endif /* _KERNEL */ 190 191 192 /* 193 * Logging macros 194 */ 195 196 #ifndef PF_DEBUGNAME 197 #define PF_DEBUGNAME "pf: " 198 #endif 199 200 #ifdef _KERNEL 201 #define DPFPRINTF(n, format, x...) \ 202 do { \ 203 if (pf_status.debug >= (n)) { \ 204 log(n, PF_DEBUGNAME); \ 205 addlog(format, ##x); \ 206 addlog("\n"); \ 207 } \ 208 } while (0) 209 #else 210 #ifdef PFDEBUG 211 #define DPFPRINTF(n, format, x...) \ 212 do { \ 213 fprintf(stderr, format, ##x); \ 214 fprintf(stderr, "\n"); \ 215 } while (0) 216 #else 217 #define DPFPRINTF(n, format, x...) ((void)0) 218 #endif /* PFDEBUG */ 219 #endif /* _KERNEL */ 220 221 222 /* 223 * Address manipulation macros 224 */ 225 226 #ifdef _KERNEL 227 #ifdef INET 228 #ifndef INET6 229 #define PF_INET_ONLY 230 #endif /* ! INET6 */ 231 #endif /* INET */ 232 233 #ifdef INET6 234 #ifndef INET 235 #define PF_INET6_ONLY 236 #endif /* ! INET */ 237 #endif /* INET6 */ 238 239 #ifdef INET 240 #ifdef INET6 241 #define PF_INET_INET6 242 #endif /* INET6 */ 243 #endif /* INET */ 244 245 #else 246 247 #define PF_INET_INET6 248 249 #endif /* _KERNEL */ 250 251 /* Both IPv4 and IPv6 */ 252 #ifdef PF_INET_INET6 253 254 #define PF_AEQ(a, b, c) \ 255 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \ 256 (c == AF_INET6 && \ 257 (a)->addr32[3] == (b)->addr32[3] && \ 258 (a)->addr32[2] == (b)->addr32[2] && \ 259 (a)->addr32[1] == (b)->addr32[1] && \ 260 (a)->addr32[0] == (b)->addr32[0])) \ 261 262 #define PF_ANEQ(a, b, c) \ 263 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \ 264 (c == AF_INET6 && \ 265 ((a)->addr32[3] != (b)->addr32[3] || \ 266 (a)->addr32[2] != (b)->addr32[2] || \ 267 (a)->addr32[1] != (b)->addr32[1] || \ 268 (a)->addr32[0] != (b)->addr32[0]))) \ 269 270 #define PF_AZERO(a, c) \ 271 ((c == AF_INET && !(a)->addr32[0]) || \ 272 (c == AF_INET6 && \ 273 !(a)->addr32[0] && !(a)->addr32[1] && \ 274 !(a)->addr32[2] && !(a)->addr32[3] )) \ 275 276 #define PF_MATCHA(n, a, m, b, f) \ 277 pf_match_addr(n, a, m, b, f) 278 279 #define PF_ACPY(a, b, f) \ 280 pf_addrcpy(a, b, f) 281 282 #define PF_AINC(a, f) \ 283 pf_addr_inc(a, f) 284 285 #define PF_POOLMASK(a, b, c, d, f) \ 286 pf_poolmask(a, b, c, d, f) 287 288 #else 289 290 /* Just IPv6 */ 291 292 #ifdef PF_INET6_ONLY 293 294 #define PF_AEQ(a, b, c) \ 295 ((a)->addr32[3] == (b)->addr32[3] && \ 296 (a)->addr32[2] == (b)->addr32[2] && \ 297 (a)->addr32[1] == (b)->addr32[1] && \ 298 (a)->addr32[0] == (b)->addr32[0]) \ 299 300 #define PF_ANEQ(a, b, c) \ 301 ((a)->addr32[3] != (b)->addr32[3] || \ 302 (a)->addr32[2] != (b)->addr32[2] || \ 303 (a)->addr32[1] != (b)->addr32[1] || \ 304 (a)->addr32[0] != (b)->addr32[0]) \ 305 306 #define PF_AZERO(a, c) \ 307 (!(a)->addr32[0] && \ 308 !(a)->addr32[1] && \ 309 !(a)->addr32[2] && \ 310 !(a)->addr32[3] ) \ 311 312 #define PF_MATCHA(n, a, m, b, f) \ 313 pf_match_addr(n, a, m, b, f) 314 315 #define PF_ACPY(a, b, f) \ 316 pf_addrcpy(a, b, f) 317 318 #define PF_AINC(a, f) \ 319 pf_addr_inc(a, f) 320 321 #define PF_POOLMASK(a, b, c, d, f) \ 322 pf_poolmask(a, b, c, d, f) 323 324 #else 325 326 /* Just IPv4 */ 327 #ifdef PF_INET_ONLY 328 329 #define PF_AEQ(a, b, c) \ 330 ((a)->addr32[0] == (b)->addr32[0]) 331 332 #define PF_ANEQ(a, b, c) \ 333 ((a)->addr32[0] != (b)->addr32[0]) 334 335 #define PF_AZERO(a, c) \ 336 (!(a)->addr32[0]) 337 338 #define PF_MATCHA(n, a, m, b, f) \ 339 pf_match_addr(n, a, m, b, f) 340 341 #define PF_ACPY(a, b, f) \ 342 (a)->v4.s_addr = (b)->v4.s_addr 343 344 #define PF_AINC(a, f) \ 345 do { \ 346 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \ 347 } while (0) 348 349 #define PF_POOLMASK(a, b, c, d, f) \ 350 do { \ 351 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \ 352 (((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \ 353 } while (0) 354 355 #endif /* PF_INET_ONLY */ 356 #endif /* PF_INET6_ONLY */ 357 #endif /* PF_INET_INET6 */ 358 359 #define PF_MISMATCHAW(aw, x, af, neg, ifp, rtid) \ 360 ( \ 361 (((aw)->type == PF_ADDR_NOROUTE && \ 362 pf_routable((x), (af), NULL, (rtid))) || \ 363 (((aw)->type == PF_ADDR_URPFFAILED && (ifp) != NULL && \ 364 pf_routable((x), (af), (ifp), (rtid))) || \ 365 ((aw)->type == PF_ADDR_RTLABEL && \ 366 !pf_rtlabel_match((x), (af), (aw), (rtid))) || \ 367 ((aw)->type == PF_ADDR_TABLE && \ 368 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \ 369 ((aw)->type == PF_ADDR_DYNIFTL && \ 370 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \ 371 ((aw)->type == PF_ADDR_RANGE && \ 372 !pf_match_addr_range(&(aw)->v.a.addr, \ 373 &(aw)->v.a.mask, (x), (af))) || \ 374 ((aw)->type == PF_ADDR_ADDRMASK && \ 375 !PF_AZERO(&(aw)->v.a.mask, (af)) && \ 376 !PF_MATCHA(0, &(aw)->v.a.addr, \ 377 &(aw)->v.a.mask, (x), (af))))) != \ 378 (neg) \ 379 ) 380 381 struct pf_rule_uid { 382 uid_t uid[2]; 383 u_int8_t op; 384 }; 385 386 struct pf_rule_gid { 387 uid_t gid[2]; 388 u_int8_t op; 389 }; 390 391 struct pf_rule_addr { 392 struct pf_addr_wrap addr; 393 u_int16_t port[2]; 394 u_int8_t neg; 395 u_int8_t port_op; 396 u_int16_t weight; 397 }; 398 399 struct pf_poolhashkey { 400 union { 401 u_int8_t key8[16]; 402 u_int16_t key16[8]; 403 u_int32_t key32[4]; 404 } pfk; /* 128-bit hash key */ 405 #define key8 pfk.key8 406 #define key16 pfk.key16 407 #define key32 pfk.key32 408 }; 409 410 struct pf_pool { 411 struct pf_addr_wrap addr; 412 struct pf_poolhashkey key; 413 struct pf_addr counter; 414 char ifname[IFNAMSIZ]; 415 struct pfi_kif *kif; 416 int tblidx; 417 u_int64_t states; 418 int curweight; 419 u_int16_t weight; 420 u_int16_t proxy_port[2]; 421 u_int8_t port_op; 422 u_int8_t opts; 423 }; 424 425 /* A packed Operating System description for fingerprinting */ 426 typedef u_int32_t pf_osfp_t; 427 #define PF_OSFP_ANY ((pf_osfp_t)0) 428 #define PF_OSFP_UNKNOWN ((pf_osfp_t)-1) 429 #define PF_OSFP_NOMATCH ((pf_osfp_t)-2) 430 431 struct pf_osfp_entry { 432 SLIST_ENTRY(pf_osfp_entry) fp_entry; 433 pf_osfp_t fp_os; 434 int fp_enflags; 435 #define PF_OSFP_EXPANDED 0x001 /* expanded entry */ 436 #define PF_OSFP_GENERIC 0x002 /* generic signature */ 437 #define PF_OSFP_NODETAIL 0x004 /* no p0f details */ 438 #define PF_OSFP_LEN 32 439 char fp_class_nm[PF_OSFP_LEN]; 440 char fp_version_nm[PF_OSFP_LEN]; 441 char fp_subtype_nm[PF_OSFP_LEN]; 442 }; 443 #define PF_OSFP_ENTRY_EQ(a, b) \ 444 ((a)->fp_os == (b)->fp_os && \ 445 memcmp((a)->fp_class_nm, (b)->fp_class_nm, PF_OSFP_LEN) == 0 && \ 446 memcmp((a)->fp_version_nm, (b)->fp_version_nm, PF_OSFP_LEN) == 0 && \ 447 memcmp((a)->fp_subtype_nm, (b)->fp_subtype_nm, PF_OSFP_LEN) == 0) 448 449 /* handle pf_osfp_t packing */ 450 #define _FP_RESERVED_BIT 1 /* For the special negative #defines */ 451 #define _FP_UNUSED_BITS 1 452 #define _FP_CLASS_BITS 10 /* OS Class (Windows, Linux) */ 453 #define _FP_VERSION_BITS 10 /* OS version (95, 98, NT, 2.4.54, 3.2) */ 454 #define _FP_SUBTYPE_BITS 10 /* patch level (NT SP4, SP3, ECN patch) */ 455 #define PF_OSFP_UNPACK(osfp, class, version, subtype) do { \ 456 (class) = ((osfp) >> (_FP_VERSION_BITS+_FP_SUBTYPE_BITS)) & \ 457 ((1 << _FP_CLASS_BITS) - 1); \ 458 (version) = ((osfp) >> _FP_SUBTYPE_BITS) & \ 459 ((1 << _FP_VERSION_BITS) - 1);\ 460 (subtype) = (osfp) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 461 } while(0) 462 #define PF_OSFP_PACK(osfp, class, version, subtype) do { \ 463 (osfp) = ((class) & ((1 << _FP_CLASS_BITS) - 1)) << (_FP_VERSION_BITS \ 464 + _FP_SUBTYPE_BITS); \ 465 (osfp) |= ((version) & ((1 << _FP_VERSION_BITS) - 1)) << \ 466 _FP_SUBTYPE_BITS; \ 467 (osfp) |= (subtype) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 468 } while(0) 469 470 /* the fingerprint of an OSes TCP SYN packet */ 471 typedef u_int64_t pf_tcpopts_t; 472 struct pf_os_fingerprint { 473 SLIST_HEAD(pf_osfp_enlist, pf_osfp_entry) fp_oses; /* list of matches */ 474 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 475 u_int16_t fp_wsize; /* TCP window size */ 476 u_int16_t fp_psize; /* ip->ip_len */ 477 u_int16_t fp_mss; /* TCP MSS */ 478 u_int16_t fp_flags; 479 #define PF_OSFP_WSIZE_MOD 0x0001 /* Window modulus */ 480 #define PF_OSFP_WSIZE_DC 0x0002 /* Window don't care */ 481 #define PF_OSFP_WSIZE_MSS 0x0004 /* Window multiple of MSS */ 482 #define PF_OSFP_WSIZE_MTU 0x0008 /* Window multiple of MTU */ 483 #define PF_OSFP_PSIZE_MOD 0x0010 /* packet size modulus */ 484 #define PF_OSFP_PSIZE_DC 0x0020 /* packet size don't care */ 485 #define PF_OSFP_WSCALE 0x0040 /* TCP window scaling */ 486 #define PF_OSFP_WSCALE_MOD 0x0080 /* TCP window scale modulus */ 487 #define PF_OSFP_WSCALE_DC 0x0100 /* TCP window scale dont-care */ 488 #define PF_OSFP_MSS 0x0200 /* TCP MSS */ 489 #define PF_OSFP_MSS_MOD 0x0400 /* TCP MSS modulus */ 490 #define PF_OSFP_MSS_DC 0x0800 /* TCP MSS dont-care */ 491 #define PF_OSFP_DF 0x1000 /* IPv4 don't fragment bit */ 492 #define PF_OSFP_TS0 0x2000 /* Zero timestamp */ 493 #define PF_OSFP_INET6 0x4000 /* IPv6 */ 494 u_int8_t fp_optcnt; /* TCP option count */ 495 u_int8_t fp_wscale; /* TCP window scaling */ 496 u_int8_t fp_ttl; /* IPv4 TTL */ 497 #define PF_OSFP_MAXTTL_OFFSET 40 498 /* TCP options packing */ 499 #define PF_OSFP_TCPOPT_NOP 0x0 /* TCP NOP option */ 500 #define PF_OSFP_TCPOPT_WSCALE 0x1 /* TCP window scaling option */ 501 #define PF_OSFP_TCPOPT_MSS 0x2 /* TCP max segment size opt */ 502 #define PF_OSFP_TCPOPT_SACK 0x3 /* TCP SACK OK option */ 503 #define PF_OSFP_TCPOPT_TS 0x4 /* TCP timestamp option */ 504 #define PF_OSFP_TCPOPT_BITS 3 /* bits used by each option */ 505 #define PF_OSFP_MAX_OPTS \ 506 (sizeof(((struct pf_os_fingerprint *)0)->fp_tcpopts) * 8) \ 507 / PF_OSFP_TCPOPT_BITS 508 509 SLIST_ENTRY(pf_os_fingerprint) fp_next; 510 }; 511 512 struct pf_osfp_ioctl { 513 struct pf_osfp_entry fp_os; 514 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 515 u_int16_t fp_wsize; /* TCP window size */ 516 u_int16_t fp_psize; /* ip->ip_len */ 517 u_int16_t fp_mss; /* TCP MSS */ 518 u_int16_t fp_flags; 519 u_int8_t fp_optcnt; /* TCP option count */ 520 u_int8_t fp_wscale; /* TCP window scaling */ 521 u_int8_t fp_ttl; /* IPv4 TTL */ 522 523 int fp_getnum; /* DIOCOSFPGET number */ 524 }; 525 526 struct pf_rule_actions { 527 int rtableid; 528 u_int16_t qid; 529 u_int16_t pqid; 530 u_int16_t max_mss; 531 u_int16_t flags; 532 u_int8_t log; 533 u_int8_t set_tos; 534 u_int8_t min_ttl; 535 u_int8_t prio[2]; 536 u_int8_t pad[3]; 537 }; 538 539 union pf_rule_ptr { 540 struct pf_rule *ptr; 541 u_int32_t nr; 542 }; 543 544 #define PF_ANCHOR_NAME_SIZE 64 545 546 struct pf_rule { 547 struct pf_rule_addr src; 548 struct pf_rule_addr dst; 549 #define PF_SKIP_IFP 0 550 #define PF_SKIP_DIR 1 551 #define PF_SKIP_RDOM 2 552 #define PF_SKIP_AF 3 553 #define PF_SKIP_PROTO 4 554 #define PF_SKIP_SRC_ADDR 5 555 #define PF_SKIP_DST_ADDR 6 556 #define PF_SKIP_SRC_PORT 7 557 #define PF_SKIP_DST_PORT 8 558 #define PF_SKIP_COUNT 9 559 union pf_rule_ptr skip[PF_SKIP_COUNT]; 560 #define PF_RULE_LABEL_SIZE 64 561 char label[PF_RULE_LABEL_SIZE]; 562 #define PF_QNAME_SIZE 64 563 char ifname[IFNAMSIZ]; 564 char rcv_ifname[IFNAMSIZ]; 565 char qname[PF_QNAME_SIZE]; 566 char pqname[PF_QNAME_SIZE]; 567 #define PF_TAG_NAME_SIZE 64 568 char tagname[PF_TAG_NAME_SIZE]; 569 char match_tagname[PF_TAG_NAME_SIZE]; 570 571 char overload_tblname[PF_TABLE_NAME_SIZE]; 572 573 TAILQ_ENTRY(pf_rule) entries; 574 struct pf_pool nat; 575 struct pf_pool rdr; 576 struct pf_pool route; 577 578 u_int64_t evaluations; 579 u_int64_t packets[2]; 580 u_int64_t bytes[2]; 581 582 struct pfi_kif *kif; 583 struct pfi_kif *rcv_kif; 584 struct pf_anchor *anchor; 585 struct pfr_ktable *overload_tbl; 586 587 pf_osfp_t os_fingerprint; 588 589 int rtableid; 590 int onrdomain; 591 u_int32_t timeout[PFTM_MAX]; 592 u_int32_t states_cur; 593 u_int32_t states_tot; 594 u_int32_t max_states; 595 u_int32_t src_nodes; 596 u_int32_t max_src_nodes; 597 u_int32_t max_src_states; 598 u_int32_t max_src_conn; 599 struct { 600 u_int32_t limit; 601 u_int32_t seconds; 602 } max_src_conn_rate; 603 u_int32_t qid; 604 u_int32_t pqid; 605 u_int32_t rt_listid; 606 u_int32_t nr; 607 u_int32_t prob; 608 uid_t cuid; 609 pid_t cpid; 610 611 u_int16_t return_icmp; 612 u_int16_t return_icmp6; 613 u_int16_t max_mss; 614 u_int16_t tag; 615 u_int16_t match_tag; 616 u_int16_t scrub_flags; 617 618 struct pf_rule_uid uid; 619 struct pf_rule_gid gid; 620 621 u_int32_t rule_flag; 622 u_int8_t action; 623 u_int8_t direction; 624 u_int8_t log; 625 u_int8_t logif; 626 u_int8_t quick; 627 u_int8_t ifnot; 628 u_int8_t match_tag_not; 629 630 #define PF_STATE_NORMAL 0x1 631 #define PF_STATE_MODULATE 0x2 632 #define PF_STATE_SYNPROXY 0x3 633 u_int8_t keep_state; 634 sa_family_t af; 635 u_int8_t proto; 636 u_int8_t type; 637 u_int8_t code; 638 u_int8_t flags; 639 u_int8_t flagset; 640 u_int8_t min_ttl; 641 u_int8_t allow_opts; 642 u_int8_t rt; 643 u_int8_t return_ttl; 644 u_int8_t tos; 645 u_int8_t set_tos; 646 u_int8_t anchor_relative; 647 u_int8_t anchor_wildcard; 648 649 #define PF_FLUSH 0x01 650 #define PF_FLUSH_GLOBAL 0x02 651 u_int8_t flush; 652 #define PF_PRIO_NOTSET 0xff 653 u_int8_t prio[2]; 654 u_int8_t pad; 655 656 struct { 657 struct pf_addr addr; 658 u_int16_t port; 659 } divert, divert_packet; 660 }; 661 662 /* rule flags */ 663 #define PFRULE_DROP 0x0000 664 #define PFRULE_RETURNRST 0x0001 665 #define PFRULE_FRAGMENT 0x0002 666 #define PFRULE_RETURNICMP 0x0004 667 #define PFRULE_RETURN 0x0008 668 #define PFRULE_NOSYNC 0x0010 669 #define PFRULE_SRCTRACK 0x0020 /* track source states */ 670 #define PFRULE_RULESRCTRACK 0x0040 /* per rule */ 671 672 /* rule flags again */ 673 #define PFRULE_IFBOUND 0x00010000 /* if-bound */ 674 #define PFRULE_STATESLOPPY 0x00020000 /* sloppy state tracking */ 675 #define PFRULE_PFLOW 0x00040000 676 #define PFRULE_ONCE 0x00100000 /* one shot 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 u_int8_t type; 716 }; 717 718 struct pf_sn_item { 719 SLIST_ENTRY(pf_sn_item) next; 720 struct pf_src_node *sn; 721 }; 722 723 SLIST_HEAD(pf_sn_head, pf_sn_item); 724 725 #define PFSNODE_HIWAT 10000 /* default source node table size */ 726 727 struct pf_state_scrub { 728 struct timeval pfss_last; /* time received last packet */ 729 u_int32_t pfss_tsecr; /* last echoed timestamp */ 730 u_int32_t pfss_tsval; /* largest timestamp */ 731 u_int32_t pfss_tsval0; /* original timestamp */ 732 u_int16_t pfss_flags; 733 #define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */ 734 #define PFSS_PAWS 0x0010 /* stricter PAWS checks */ 735 #define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */ 736 #define PFSS_DATA_TS 0x0040 /* timestamp on data packets */ 737 #define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */ 738 u_int8_t pfss_ttl; /* stashed TTL */ 739 u_int8_t pad; 740 u_int32_t pfss_ts_mod; /* timestamp modulation */ 741 }; 742 743 struct pf_state_host { 744 struct pf_addr addr; 745 u_int16_t port; 746 u_int16_t pad; 747 }; 748 749 struct pf_state_peer { 750 struct pf_state_scrub *scrub; /* state is scrubbed */ 751 u_int32_t seqlo; /* Max sequence number sent */ 752 u_int32_t seqhi; /* Max the other end ACKd + win */ 753 u_int32_t seqdiff; /* Sequence number modulator */ 754 u_int16_t max_win; /* largest window (pre scaling) */ 755 u_int16_t mss; /* Maximum segment size option */ 756 u_int8_t state; /* active state level */ 757 u_int8_t wscale; /* window scaling factor */ 758 u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */ 759 u_int8_t pad[1]; 760 }; 761 762 TAILQ_HEAD(pf_state_queue, pf_state); 763 764 /* keep synced with struct pf_state_key, used in RB_FIND */ 765 struct pf_state_key_cmp { 766 struct pf_addr addr[2]; 767 u_int16_t port[2]; 768 u_int16_t rdomain; 769 sa_family_t af; 770 u_int8_t proto; 771 }; 772 773 struct pf_state_item { 774 TAILQ_ENTRY(pf_state_item) entry; 775 struct pf_state *s; 776 }; 777 778 TAILQ_HEAD(pf_statelisthead, pf_state_item); 779 780 struct pf_state_key { 781 struct pf_addr addr[2]; 782 u_int16_t port[2]; 783 u_int16_t rdomain; 784 sa_family_t af; 785 u_int8_t proto; 786 787 RB_ENTRY(pf_state_key) entry; 788 struct pf_statelisthead states; 789 struct pf_state_key *reverse; 790 struct inpcb *inp; 791 }; 792 793 /* keep synced with struct pf_state, used in RB_FIND */ 794 struct pf_state_cmp { 795 u_int64_t id; 796 u_int32_t creatorid; 797 u_int8_t direction; 798 u_int8_t pad[3]; 799 }; 800 801 struct pf_state { 802 u_int64_t id; 803 u_int32_t creatorid; 804 u_int8_t direction; 805 u_int8_t pad[3]; 806 807 TAILQ_ENTRY(pf_state) sync_list; 808 TAILQ_ENTRY(pf_state) entry_list; 809 RB_ENTRY(pf_state) entry_id; 810 struct pf_state_peer src; 811 struct pf_state_peer dst; 812 struct pf_rule_slist match_rules; 813 union pf_rule_ptr rule; 814 union pf_rule_ptr anchor; 815 union pf_rule_ptr natrule; 816 struct pf_addr rt_addr; 817 struct pf_sn_head src_nodes; 818 struct pf_state_key *key[2]; /* addresses stack and wire */ 819 struct pfi_kif *kif; 820 struct pfi_kif *rt_kif; 821 u_int64_t packets[2]; 822 u_int64_t bytes[2]; 823 u_int32_t creation; 824 u_int32_t expire; 825 u_int32_t pfsync_time; 826 u_int16_t qid; 827 u_int16_t pqid; 828 u_int16_t tag; 829 u_int16_t state_flags; 830 #define PFSTATE_ALLOWOPTS 0x0001 831 #define PFSTATE_SLOPPY 0x0002 832 #define PFSTATE_PFLOW 0x0004 833 #define PFSTATE_NOSYNC 0x0008 834 #define PFSTATE_ACK 0x0010 835 #define PFSTATE_NODF 0x0020 836 #define PFSTATE_SETTOS 0x0040 837 #define PFSTATE_RANDOMID 0x0080 838 #define PFSTATE_SCRUB_TCP 0x0100 839 u_int8_t log; 840 u_int8_t timeout; 841 u_int8_t sync_state; /* PFSYNC_S_x */ 842 843 /* XXX */ 844 u_int8_t sync_updates; 845 846 int rtableid[2]; /* rtables stack and wire */ 847 u_int8_t min_ttl; 848 u_int8_t set_tos; 849 u_int16_t max_mss; 850 u_int8_t prio[2]; 851 u_int8_t pad2[2]; 852 }; 853 854 /* 855 * Unified state structures for pulling states out of the kernel 856 * used by pfsync(4) and the pf(4) ioctl. 857 */ 858 struct pfsync_state_scrub { 859 u_int16_t pfss_flags; 860 u_int8_t pfss_ttl; /* stashed TTL */ 861 #define PFSYNC_SCRUB_FLAG_VALID 0x01 862 u_int8_t scrub_flag; 863 u_int32_t pfss_ts_mod; /* timestamp modulation */ 864 } __packed; 865 866 struct pfsync_state_peer { 867 struct pfsync_state_scrub scrub; /* state is scrubbed */ 868 u_int32_t seqlo; /* Max sequence number sent */ 869 u_int32_t seqhi; /* Max the other end ACKd + win */ 870 u_int32_t seqdiff; /* Sequence number modulator */ 871 u_int16_t max_win; /* largest window (pre scaling) */ 872 u_int16_t mss; /* Maximum segment size option */ 873 u_int8_t state; /* active state level */ 874 u_int8_t wscale; /* window scaling factor */ 875 u_int8_t pad[6]; 876 } __packed; 877 878 struct pfsync_state_key { 879 struct pf_addr addr[2]; 880 u_int16_t port[2]; 881 u_int16_t rdomain; 882 sa_family_t af; 883 u_int8_t pad; 884 }; 885 886 struct pfsync_state { 887 u_int32_t id[2]; 888 char ifname[IFNAMSIZ]; 889 struct pfsync_state_key key[2]; 890 struct pfsync_state_peer src; 891 struct pfsync_state_peer dst; 892 struct pf_addr rt_addr; 893 u_int32_t rule; 894 u_int32_t anchor; 895 u_int32_t nat_rule; 896 u_int32_t creation; 897 u_int32_t expire; 898 u_int32_t packets[2][2]; 899 u_int32_t bytes[2][2]; 900 u_int32_t creatorid; 901 int32_t rtableid[2]; 902 u_int16_t max_mss; 903 sa_family_t af; 904 u_int8_t proto; 905 u_int8_t direction; 906 u_int8_t log; 907 u_int8_t state_flags; /* XXX remove after 5.0 */ 908 u_int8_t timeout; 909 u_int8_t sync_flags; 910 u_int8_t updates; 911 u_int8_t min_ttl; 912 u_int8_t set_tos; 913 u_int16_t all_state_flags; 914 u_int8_t pad[2]; 915 } __packed; 916 917 #define PFSYNC_FLAG_SRCNODE 0x04 918 #define PFSYNC_FLAG_NATSRCNODE 0x08 919 920 /* for copies to/from network byte order */ 921 /* ioctl interface also uses network byte order */ 922 #define pf_state_peer_hton(s,d) do { \ 923 (d)->seqlo = htonl((s)->seqlo); \ 924 (d)->seqhi = htonl((s)->seqhi); \ 925 (d)->seqdiff = htonl((s)->seqdiff); \ 926 (d)->max_win = htons((s)->max_win); \ 927 (d)->mss = htons((s)->mss); \ 928 (d)->state = (s)->state; \ 929 (d)->wscale = (s)->wscale; \ 930 if ((s)->scrub) { \ 931 (d)->scrub.pfss_flags = \ 932 htons((s)->scrub->pfss_flags & PFSS_TIMESTAMP); \ 933 (d)->scrub.pfss_ttl = (s)->scrub->pfss_ttl; \ 934 (d)->scrub.pfss_ts_mod = htonl((s)->scrub->pfss_ts_mod);\ 935 (d)->scrub.scrub_flag = PFSYNC_SCRUB_FLAG_VALID; \ 936 } \ 937 } while (0) 938 939 #define pf_state_peer_ntoh(s,d) do { \ 940 (d)->seqlo = ntohl((s)->seqlo); \ 941 (d)->seqhi = ntohl((s)->seqhi); \ 942 (d)->seqdiff = ntohl((s)->seqdiff); \ 943 (d)->max_win = ntohs((s)->max_win); \ 944 (d)->mss = ntohs((s)->mss); \ 945 (d)->state = (s)->state; \ 946 (d)->wscale = (s)->wscale; \ 947 if ((s)->scrub.scrub_flag == PFSYNC_SCRUB_FLAG_VALID && \ 948 (d)->scrub != NULL) { \ 949 (d)->scrub->pfss_flags = \ 950 ntohs((s)->scrub.pfss_flags) & PFSS_TIMESTAMP; \ 951 (d)->scrub->pfss_ttl = (s)->scrub.pfss_ttl; \ 952 (d)->scrub->pfss_ts_mod = ntohl((s)->scrub.pfss_ts_mod);\ 953 } \ 954 } while (0) 955 956 #define pf_state_counter_hton(s,d) do { \ 957 d[0] = htonl((s>>32)&0xffffffff); \ 958 d[1] = htonl(s&0xffffffff); \ 959 } while (0) 960 961 #define pf_state_counter_from_pfsync(s) \ 962 (((u_int64_t)(s[0])<<32) | (u_int64_t)(s[1])) 963 964 #define pf_state_counter_ntoh(s,d) do { \ 965 d = ntohl(s[0]); \ 966 d = d<<32; \ 967 d += ntohl(s[1]); \ 968 } while (0) 969 970 TAILQ_HEAD(pf_rulequeue, pf_rule); 971 972 struct pf_anchor; 973 974 struct pf_ruleset { 975 struct { 976 struct pf_rulequeue queues[2]; 977 struct { 978 struct pf_rulequeue *ptr; 979 struct pf_rule **ptr_array; 980 u_int32_t rcount; 981 u_int32_t ticket; 982 int open; 983 } active, inactive; 984 } rules; 985 struct pf_anchor *anchor; 986 u_int32_t tticket; 987 int tables; 988 int topen; 989 }; 990 991 RB_HEAD(pf_anchor_global, pf_anchor); 992 RB_HEAD(pf_anchor_node, pf_anchor); 993 struct pf_anchor { 994 RB_ENTRY(pf_anchor) entry_global; 995 RB_ENTRY(pf_anchor) entry_node; 996 struct pf_anchor *parent; 997 struct pf_anchor_node children; 998 char name[PF_ANCHOR_NAME_SIZE]; 999 char path[MAXPATHLEN]; 1000 struct pf_ruleset ruleset; 1001 int refcnt; /* anchor rules */ 1002 int match; 1003 }; 1004 RB_PROTOTYPE(pf_anchor_global, pf_anchor, entry_global, pf_anchor_compare); 1005 RB_PROTOTYPE(pf_anchor_node, pf_anchor, entry_node, pf_anchor_compare); 1006 1007 #define PF_RESERVED_ANCHOR "_pf" 1008 1009 #define PFR_TFLAG_PERSIST 0x00000001 1010 #define PFR_TFLAG_CONST 0x00000002 1011 #define PFR_TFLAG_ACTIVE 0x00000004 1012 #define PFR_TFLAG_INACTIVE 0x00000008 1013 #define PFR_TFLAG_REFERENCED 0x00000010 1014 #define PFR_TFLAG_REFDANCHOR 0x00000020 1015 #define PFR_TFLAG_COUNTERS 0x00000040 1016 /* Adjust masks below when adding flags. */ 1017 #define PFR_TFLAG_USRMASK 0x00000043 1018 #define PFR_TFLAG_SETMASK 0x0000003C 1019 #define PFR_TFLAG_ALLMASK 0x0000007F 1020 1021 struct pfr_table { 1022 char pfrt_anchor[MAXPATHLEN]; 1023 char pfrt_name[PF_TABLE_NAME_SIZE]; 1024 u_int32_t pfrt_flags; 1025 u_int8_t pfrt_fback; 1026 }; 1027 1028 enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED, 1029 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE, 1030 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_NOCOUNT, PFR_FB_MAX }; 1031 1032 struct pfr_addr { 1033 union { 1034 struct in_addr _pfra_ip4addr; 1035 struct in6_addr _pfra_ip6addr; 1036 } pfra_u; 1037 char pfra_ifname[IFNAMSIZ]; 1038 u_int32_t pfra_states; 1039 u_int16_t pfra_weight; 1040 u_int8_t pfra_af; 1041 u_int8_t pfra_net; 1042 u_int8_t pfra_not; 1043 u_int8_t pfra_fback; 1044 u_int8_t pfra_type; 1045 u_int8_t pad[7]; 1046 }; 1047 #define pfra_ip4addr pfra_u._pfra_ip4addr 1048 #define pfra_ip6addr pfra_u._pfra_ip6addr 1049 1050 enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX }; 1051 enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX }; 1052 #define PFR_OP_XPASS PFR_OP_ADDR_MAX 1053 1054 struct pfr_astats { 1055 struct pfr_addr pfras_a; 1056 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1057 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1058 long pfras_tzero; 1059 }; 1060 1061 enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX }; 1062 1063 struct pfr_tstats { 1064 struct pfr_table pfrts_t; 1065 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1066 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1067 u_int64_t pfrts_match; 1068 u_int64_t pfrts_nomatch; 1069 long pfrts_tzero; 1070 int pfrts_cnt; 1071 int pfrts_refcnt[PFR_REFCNT_MAX]; 1072 }; 1073 #define pfrts_name pfrts_t.pfrt_name 1074 #define pfrts_flags pfrts_t.pfrt_flags 1075 1076 struct pfr_kcounters { 1077 u_int64_t pfrkc_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1078 u_int64_t pfrkc_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1079 u_int64_t states; 1080 }; 1081 1082 SLIST_HEAD(pfr_kentryworkq, pfr_kentry); 1083 struct _pfr_kentry { 1084 struct radix_node _pfrke_node[2]; 1085 union sockaddr_union _pfrke_sa; 1086 SLIST_ENTRY(pfr_kentry) _pfrke_workq; 1087 struct pfr_kcounters *_pfrke_counters; 1088 long _pfrke_tzero; 1089 u_int8_t _pfrke_af; 1090 u_int8_t _pfrke_net; 1091 u_int8_t _pfrke_flags; 1092 u_int8_t _pfrke_type; 1093 }; 1094 #define PFRKE_FLAG_NOT 0x01 1095 #define PFRKE_FLAG_MARK 0x02 1096 1097 /* pfrke_type */ 1098 enum { PFRKE_PLAIN, PFRKE_ROUTE, PFRKE_COST, PFRKE_MAX }; 1099 1100 struct pfr_kentry { 1101 union { 1102 struct _pfr_kentry _ke; 1103 } u; 1104 }; 1105 #define pfrke_node u._ke._pfrke_node 1106 #define pfrke_sa u._ke._pfrke_sa 1107 #define pfrke_workq u._ke._pfrke_workq 1108 #define pfrke_counters u._ke._pfrke_counters 1109 #define pfrke_tzero u._ke._pfrke_tzero 1110 #define pfrke_af u._ke._pfrke_af 1111 #define pfrke_net u._ke._pfrke_net 1112 #define pfrke_flags u._ke._pfrke_flags 1113 #define pfrke_type u._ke._pfrke_type 1114 1115 struct pfr_kentry_route { 1116 union { 1117 struct _pfr_kentry _ke; 1118 } u; 1119 1120 struct pfi_kif *kif; 1121 }; 1122 1123 struct pfr_kentry_cost { 1124 union { 1125 struct _pfr_kentry _ke; 1126 } u; 1127 1128 struct pfi_kif *kif; 1129 /* Above overlaps with pfr_kentry route */ 1130 1131 u_int16_t weight; 1132 }; 1133 1134 struct pfr_kentry_all { 1135 union { 1136 struct _pfr_kentry _ke; 1137 struct pfr_kentry_route kr; 1138 struct pfr_kentry_cost kc; 1139 } u; 1140 }; 1141 #define pfrke_rkif u.kr.kif 1142 1143 SLIST_HEAD(pfr_ktableworkq, pfr_ktable); 1144 RB_HEAD(pfr_ktablehead, pfr_ktable); 1145 struct pfr_ktable { 1146 struct pfr_tstats pfrkt_ts; 1147 RB_ENTRY(pfr_ktable) pfrkt_tree; 1148 SLIST_ENTRY(pfr_ktable) pfrkt_workq; 1149 struct radix_node_head *pfrkt_ip4; 1150 struct radix_node_head *pfrkt_ip6; 1151 struct pfr_ktable *pfrkt_shadow; 1152 struct pfr_ktable *pfrkt_root; 1153 struct pf_ruleset *pfrkt_rs; 1154 long pfrkt_larg; 1155 int pfrkt_nflags; 1156 u_int64_t pfrkt_refcntcost; 1157 u_int16_t pfrkt_gcdweight; 1158 u_int16_t pfrkt_maxweight; 1159 }; 1160 #define pfrkt_t pfrkt_ts.pfrts_t 1161 #define pfrkt_name pfrkt_t.pfrt_name 1162 #define pfrkt_anchor pfrkt_t.pfrt_anchor 1163 #define pfrkt_ruleset pfrkt_t.pfrt_ruleset 1164 #define pfrkt_flags pfrkt_t.pfrt_flags 1165 #define pfrkt_cnt pfrkt_ts.pfrts_cnt 1166 #define pfrkt_refcnt pfrkt_ts.pfrts_refcnt 1167 #define pfrkt_packets pfrkt_ts.pfrts_packets 1168 #define pfrkt_bytes pfrkt_ts.pfrts_bytes 1169 #define pfrkt_match pfrkt_ts.pfrts_match 1170 #define pfrkt_nomatch pfrkt_ts.pfrts_nomatch 1171 #define pfrkt_tzero pfrkt_ts.pfrts_tzero 1172 1173 RB_HEAD(pf_state_tree, pf_state_key); 1174 RB_PROTOTYPE(pf_state_tree, pf_state_key, entry, pf_state_compare_key); 1175 1176 RB_HEAD(pf_state_tree_ext_gwy, pf_state_key); 1177 RB_PROTOTYPE(pf_state_tree_ext_gwy, pf_state_key, 1178 entry_ext_gwy, pf_state_compare_ext_gwy); 1179 1180 RB_HEAD(pfi_ifhead, pfi_kif); 1181 1182 /* state tables */ 1183 extern struct pf_state_tree pf_statetbl; 1184 1185 /* keep synced with pfi_kif, used in RB_FIND */ 1186 struct pfi_kif_cmp { 1187 char pfik_name[IFNAMSIZ]; 1188 }; 1189 1190 struct pfi_kif { 1191 char pfik_name[IFNAMSIZ]; 1192 RB_ENTRY(pfi_kif) pfik_tree; 1193 u_int64_t pfik_packets[2][2][2]; 1194 u_int64_t pfik_bytes[2][2][2]; 1195 u_int32_t pfik_tzero; 1196 int pfik_flags; 1197 int pfik_flags_new; 1198 void *pfik_ah_cookie; 1199 struct ifnet *pfik_ifp; 1200 struct ifg_group *pfik_group; 1201 int pfik_states; 1202 int pfik_rules; 1203 int pfik_routes; 1204 TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs; 1205 }; 1206 1207 enum pfi_kif_refs { 1208 PFI_KIF_REF_NONE, 1209 PFI_KIF_REF_STATE, 1210 PFI_KIF_REF_RULE, 1211 PFI_KIF_REF_ROUTE 1212 }; 1213 1214 #define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */ 1215 1216 struct pf_pdesc { 1217 struct { 1218 int done; 1219 uid_t uid; 1220 gid_t gid; 1221 pid_t pid; 1222 } lookup; 1223 u_int64_t tot_len; /* Make Mickey money */ 1224 union { 1225 struct tcphdr *tcp; 1226 struct udphdr *udp; 1227 struct icmp *icmp; 1228 #ifdef INET6 1229 struct icmp6_hdr *icmp6; 1230 #endif /* INET6 */ 1231 void *any; 1232 } hdr; 1233 1234 struct pf_addr nsaddr; /* src address after NAT */ 1235 struct pf_addr ndaddr; /* dst address after NAT */ 1236 1237 struct ether_header 1238 *eh; 1239 struct pf_addr *src; /* src address */ 1240 struct pf_addr *dst; /* dst address */ 1241 u_int16_t *sport; 1242 u_int16_t *dport; 1243 u_int16_t osport; 1244 u_int16_t odport; 1245 u_int16_t nsport; /* src port after NAT */ 1246 u_int16_t ndport; /* dst port after NAT */ 1247 1248 u_int32_t p_len; /* total length of payload */ 1249 u_int32_t badopts; /* v4 options or v6 routing headers */ 1250 1251 u_int16_t *ip_sum; 1252 u_int16_t *proto_sum; 1253 1254 u_int16_t rdomain; /* original routing domain */ 1255 u_int16_t virtual_proto; 1256 #define PF_VPROTO_FRAGMENT 256 1257 sa_family_t af; 1258 u_int8_t proto; 1259 u_int8_t tos; 1260 u_int8_t dir; /* direction */ 1261 u_int8_t sidx; /* key index for source */ 1262 u_int8_t didx; /* key index for destination */ 1263 u_int8_t destchg; /* flag set when destination changed */ 1264 u_int8_t pflog; /* flags for packet logging */ 1265 }; 1266 1267 /* flags for RDR options */ 1268 #define PF_DPORT_RANGE 0x01 /* Dest port uses range */ 1269 #define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */ 1270 1271 /* Reasons code for passing/dropping a packet */ 1272 #define PFRES_MATCH 0 /* Explicit match of a rule */ 1273 #define PFRES_BADOFF 1 /* Bad offset for pull_hdr */ 1274 #define PFRES_FRAG 2 /* Dropping following fragment */ 1275 #define PFRES_SHORT 3 /* Dropping short packet */ 1276 #define PFRES_NORM 4 /* Dropping by normalizer */ 1277 #define PFRES_MEMORY 5 /* Dropped due to lacking mem */ 1278 #define PFRES_TS 6 /* Bad TCP Timestamp (RFC1323) */ 1279 #define PFRES_CONGEST 7 /* Congestion (of ipintrq) */ 1280 #define PFRES_IPOPTIONS 8 /* IP option */ 1281 #define PFRES_PROTCKSUM 9 /* Protocol checksum invalid */ 1282 #define PFRES_BADSTATE 10 /* State mismatch */ 1283 #define PFRES_STATEINS 11 /* State insertion failure */ 1284 #define PFRES_MAXSTATES 12 /* State limit */ 1285 #define PFRES_SRCLIMIT 13 /* Source node/conn limit */ 1286 #define PFRES_SYNPROXY 14 /* SYN proxy */ 1287 #define PFRES_MAX 15 /* total+1 */ 1288 1289 #define PFRES_NAMES { \ 1290 "match", \ 1291 "bad-offset", \ 1292 "fragment", \ 1293 "short", \ 1294 "normalize", \ 1295 "memory", \ 1296 "bad-timestamp", \ 1297 "congestion", \ 1298 "ip-option", \ 1299 "proto-cksum", \ 1300 "state-mismatch", \ 1301 "state-insert", \ 1302 "state-limit", \ 1303 "src-limit", \ 1304 "synproxy", \ 1305 NULL \ 1306 } 1307 1308 /* Counters for other things we want to keep track of */ 1309 #define LCNT_STATES 0 /* states */ 1310 #define LCNT_SRCSTATES 1 /* max-src-states */ 1311 #define LCNT_SRCNODES 2 /* max-src-nodes */ 1312 #define LCNT_SRCCONN 3 /* max-src-conn */ 1313 #define LCNT_SRCCONNRATE 4 /* max-src-conn-rate */ 1314 #define LCNT_OVERLOAD_TABLE 5 /* entry added to overload table */ 1315 #define LCNT_OVERLOAD_FLUSH 6 /* state entries flushed */ 1316 #define LCNT_MAX 7 /* total+1 */ 1317 1318 #define LCNT_NAMES { \ 1319 "max states per rule", \ 1320 "max-src-states", \ 1321 "max-src-nodes", \ 1322 "max-src-conn", \ 1323 "max-src-conn-rate", \ 1324 "overload table insertion", \ 1325 "overload flush states", \ 1326 NULL \ 1327 } 1328 1329 /* UDP state enumeration */ 1330 #define PFUDPS_NO_TRAFFIC 0 1331 #define PFUDPS_SINGLE 1 1332 #define PFUDPS_MULTIPLE 2 1333 1334 #define PFUDPS_NSTATES 3 /* number of state levels */ 1335 1336 #define PFUDPS_NAMES { \ 1337 "NO_TRAFFIC", \ 1338 "SINGLE", \ 1339 "MULTIPLE", \ 1340 NULL \ 1341 } 1342 1343 /* Other protocol state enumeration */ 1344 #define PFOTHERS_NO_TRAFFIC 0 1345 #define PFOTHERS_SINGLE 1 1346 #define PFOTHERS_MULTIPLE 2 1347 1348 #define PFOTHERS_NSTATES 3 /* number of state levels */ 1349 1350 #define PFOTHERS_NAMES { \ 1351 "NO_TRAFFIC", \ 1352 "SINGLE", \ 1353 "MULTIPLE", \ 1354 NULL \ 1355 } 1356 1357 #define FCNT_STATE_SEARCH 0 1358 #define FCNT_STATE_INSERT 1 1359 #define FCNT_STATE_REMOVALS 2 1360 #define FCNT_MAX 3 1361 1362 #define SCNT_SRC_NODE_SEARCH 0 1363 #define SCNT_SRC_NODE_INSERT 1 1364 #define SCNT_SRC_NODE_REMOVALS 2 1365 #define SCNT_MAX 3 1366 1367 #define ACTION_SET(a, x) \ 1368 do { \ 1369 if ((a) != NULL) \ 1370 *(a) = (x); \ 1371 } while (0) 1372 1373 #define REASON_SET(a, x) \ 1374 do { \ 1375 if ((void *)(a) != NULL) \ 1376 *(a) = (x); \ 1377 if (x < PFRES_MAX) \ 1378 pf_status.counters[x]++; \ 1379 } while (0) 1380 1381 struct pf_status { 1382 u_int64_t counters[PFRES_MAX]; 1383 u_int64_t lcounters[LCNT_MAX]; /* limit counters */ 1384 u_int64_t fcounters[FCNT_MAX]; 1385 u_int64_t scounters[SCNT_MAX]; 1386 u_int64_t pcounters[2][2][3]; 1387 u_int64_t bcounters[2][2]; 1388 u_int64_t stateid; 1389 u_int32_t running; 1390 u_int32_t states; 1391 u_int32_t src_nodes; 1392 u_int32_t since; 1393 u_int32_t debug; 1394 u_int32_t hostid; 1395 u_int32_t reass; /* reassembly */ 1396 char ifname[IFNAMSIZ]; 1397 u_int8_t pf_chksum[PF_MD5_DIGEST_LENGTH]; 1398 }; 1399 1400 #define PF_REASS_ENABLED 0x01 1401 #define PF_REASS_NODF 0x02 1402 1403 struct cbq_opts { 1404 u_int minburst; 1405 u_int maxburst; 1406 u_int pktsize; 1407 u_int maxpktsize; 1408 u_int ns_per_byte; 1409 u_int maxidle; 1410 int minidle; 1411 u_int offtime; 1412 int flags; 1413 }; 1414 1415 struct priq_opts { 1416 int flags; 1417 }; 1418 1419 struct hfsc_opts { 1420 /* real-time service curve */ 1421 u_int rtsc_m1; /* slope of the 1st segment in bps */ 1422 u_int rtsc_d; /* the x-projection of m1 in msec */ 1423 u_int rtsc_m2; /* slope of the 2nd segment in bps */ 1424 /* link-sharing service curve */ 1425 u_int lssc_m1; 1426 u_int lssc_d; 1427 u_int lssc_m2; 1428 /* upper-limit service curve */ 1429 u_int ulsc_m1; 1430 u_int ulsc_d; 1431 u_int ulsc_m2; 1432 int flags; 1433 }; 1434 1435 struct pf_altq { 1436 char ifname[IFNAMSIZ]; 1437 1438 void *altq_disc; /* discipline-specific state */ 1439 TAILQ_ENTRY(pf_altq) entries; 1440 1441 /* scheduler spec */ 1442 u_int8_t scheduler; /* scheduler type */ 1443 u_int16_t tbrsize; /* tokenbucket regulator size */ 1444 u_int32_t ifbandwidth; /* interface bandwidth */ 1445 1446 /* queue spec */ 1447 char qname[PF_QNAME_SIZE]; /* queue name */ 1448 char parent[PF_QNAME_SIZE]; /* parent name */ 1449 u_int32_t parent_qid; /* parent queue id */ 1450 u_int32_t bandwidth; /* queue bandwidth */ 1451 u_int8_t priority; /* priority */ 1452 u_int16_t qlimit; /* queue size limit */ 1453 u_int16_t flags; /* misc flags */ 1454 union { 1455 struct cbq_opts cbq_opts; 1456 struct priq_opts priq_opts; 1457 struct hfsc_opts hfsc_opts; 1458 } pq_u; 1459 1460 u_int32_t qid; /* return value */ 1461 }; 1462 1463 struct pf_tagname { 1464 TAILQ_ENTRY(pf_tagname) entries; 1465 char name[PF_TAG_NAME_SIZE]; 1466 u_int16_t tag; 1467 int ref; 1468 }; 1469 1470 struct pf_divert { 1471 struct pf_addr addr; 1472 u_int16_t port; 1473 u_int16_t rdomain; 1474 }; 1475 1476 #define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */ 1477 #define PFFRAG_FRAG_HIWAT 1000 /* Number of fragmented packets */ 1478 #define PFFRAG_FRCENT_HIWAT 50000 /* Number of fragment cache entries */ 1479 #define PFFRAG_FRCACHE_HIWAT 10000 /* Number of fragment descriptors */ 1480 1481 #define PFR_KTABLE_HIWAT 1000 /* Number of tables */ 1482 #define PFR_KENTRY_HIWAT 200000 /* Number of table entries */ 1483 #define PFR_KENTRY_HIWAT_SMALL 100000 /* Number of table entries (tiny hosts) */ 1484 1485 /* 1486 * ioctl parameter structures 1487 */ 1488 1489 struct pfioc_rule { 1490 u_int32_t action; 1491 u_int32_t ticket; 1492 u_int32_t nr; 1493 char anchor[MAXPATHLEN]; 1494 char anchor_call[MAXPATHLEN]; 1495 struct pf_rule rule; 1496 }; 1497 1498 struct pfioc_natlook { 1499 struct pf_addr saddr; 1500 struct pf_addr daddr; 1501 struct pf_addr rsaddr; 1502 struct pf_addr rdaddr; 1503 u_int16_t rdomain; 1504 u_int16_t rrdomain; 1505 u_int16_t sport; 1506 u_int16_t dport; 1507 u_int16_t rsport; 1508 u_int16_t rdport; 1509 sa_family_t af; 1510 u_int8_t proto; 1511 u_int8_t direction; 1512 }; 1513 1514 struct pfioc_state { 1515 struct pfsync_state state; 1516 }; 1517 1518 struct pfioc_src_node_kill { 1519 sa_family_t psnk_af; 1520 struct pf_rule_addr psnk_src; 1521 struct pf_rule_addr psnk_dst; 1522 u_int psnk_killed; 1523 }; 1524 1525 struct pfioc_state_kill { 1526 struct pf_state_cmp psk_pfcmp; 1527 sa_family_t psk_af; 1528 int psk_proto; 1529 struct pf_rule_addr psk_src; 1530 struct pf_rule_addr psk_dst; 1531 char psk_ifname[IFNAMSIZ]; 1532 char psk_label[PF_RULE_LABEL_SIZE]; 1533 u_int psk_killed; 1534 u_int16_t psk_rdomain; 1535 }; 1536 1537 struct pfioc_states { 1538 int ps_len; 1539 union { 1540 caddr_t psu_buf; 1541 struct pfsync_state *psu_states; 1542 } ps_u; 1543 #define ps_buf ps_u.psu_buf 1544 #define ps_states ps_u.psu_states 1545 }; 1546 1547 struct pfioc_src_nodes { 1548 int psn_len; 1549 union { 1550 caddr_t psu_buf; 1551 struct pf_src_node *psu_src_nodes; 1552 } psn_u; 1553 #define psn_buf psn_u.psu_buf 1554 #define psn_src_nodes psn_u.psu_src_nodes 1555 }; 1556 1557 struct pfioc_tm { 1558 int timeout; 1559 int seconds; 1560 }; 1561 1562 struct pfioc_limit { 1563 int index; 1564 unsigned limit; 1565 }; 1566 1567 struct pfioc_altq { 1568 u_int32_t action; 1569 u_int32_t ticket; 1570 u_int32_t nr; 1571 struct pf_altq altq; 1572 }; 1573 1574 struct pfioc_qstats { 1575 u_int32_t ticket; 1576 u_int32_t nr; 1577 void *buf; 1578 int nbytes; 1579 u_int8_t scheduler; 1580 }; 1581 1582 struct pfioc_ruleset { 1583 u_int32_t nr; 1584 char path[MAXPATHLEN]; 1585 char name[PF_ANCHOR_NAME_SIZE]; 1586 }; 1587 1588 struct pfioc_trans { 1589 int size; /* number of elements */ 1590 int esize; /* size of each element in bytes */ 1591 struct pfioc_trans_e { 1592 int type; 1593 char anchor[MAXPATHLEN]; 1594 u_int32_t ticket; 1595 } *array; 1596 }; 1597 1598 #define PFR_FLAG_DUMMY 0x00000002 1599 #define PFR_FLAG_FEEDBACK 0x00000004 1600 #define PFR_FLAG_CLSTATS 0x00000008 1601 #define PFR_FLAG_ADDRSTOO 0x00000010 1602 #define PFR_FLAG_REPLACE 0x00000020 1603 #define PFR_FLAG_ALLRSETS 0x00000040 1604 #define PFR_FLAG_ALLMASK 0x0000007F 1605 #ifdef _KERNEL 1606 #define PFR_FLAG_USERIOCTL 0x10000000 1607 #endif 1608 1609 struct pfioc_table { 1610 struct pfr_table pfrio_table; 1611 void *pfrio_buffer; 1612 int pfrio_esize; 1613 int pfrio_size; 1614 int pfrio_size2; 1615 int pfrio_nadd; 1616 int pfrio_ndel; 1617 int pfrio_nchange; 1618 int pfrio_flags; 1619 u_int32_t pfrio_ticket; 1620 }; 1621 #define pfrio_exists pfrio_nadd 1622 #define pfrio_nzero pfrio_nadd 1623 #define pfrio_nmatch pfrio_nadd 1624 #define pfrio_naddr pfrio_size2 1625 #define pfrio_setflag pfrio_size2 1626 #define pfrio_clrflag pfrio_nadd 1627 1628 struct pfioc_iface { 1629 char pfiio_name[IFNAMSIZ]; 1630 void *pfiio_buffer; 1631 int pfiio_esize; 1632 int pfiio_size; 1633 int pfiio_nzero; 1634 int pfiio_flags; 1635 }; 1636 1637 1638 /* 1639 * ioctl operations 1640 */ 1641 1642 #define DIOCSTART _IO ('D', 1) 1643 #define DIOCSTOP _IO ('D', 2) 1644 #define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule) 1645 #define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule) 1646 #define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule) 1647 /* XXX cut 8 - 17 */ 1648 #define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill) 1649 #define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state) 1650 #define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_iface) 1651 #define DIOCGETSTATUS _IOWR('D', 21, struct pf_status) 1652 #define DIOCCLRSTATUS _IOWR('D', 22, struct pfioc_iface) 1653 #define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook) 1654 #define DIOCSETDEBUG _IOWR('D', 24, u_int32_t) 1655 #define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states) 1656 #define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule) 1657 /* XXX cut 26 - 28 */ 1658 #define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm) 1659 #define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm) 1660 #define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state) 1661 #define DIOCCLRRULECTRS _IO ('D', 38) 1662 #define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit) 1663 #define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit) 1664 #define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill) 1665 #define DIOCSTARTALTQ _IO ('D', 42) 1666 #define DIOCSTOPALTQ _IO ('D', 43) 1667 #define DIOCADDALTQ _IOWR('D', 45, struct pfioc_altq) 1668 #define DIOCGETALTQS _IOWR('D', 47, struct pfioc_altq) 1669 #define DIOCGETALTQ _IOWR('D', 48, struct pfioc_altq) 1670 #define DIOCCHANGEALTQ _IOWR('D', 49, struct pfioc_altq) 1671 #define DIOCGETQSTATS _IOWR('D', 50, struct pfioc_qstats) 1672 /* XXX cut 51 - 57 */ 1673 #define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset) 1674 #define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset) 1675 #define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table) 1676 #define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table) 1677 #define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table) 1678 #define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table) 1679 #define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table) 1680 #define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table) 1681 #define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table) 1682 #define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table) 1683 #define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table) 1684 #define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table) 1685 #define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table) 1686 #define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table) 1687 #define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table) 1688 #define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table) 1689 #define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table) 1690 #define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table) 1691 #define DIOCOSFPFLUSH _IO('D', 78) 1692 #define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl) 1693 #define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl) 1694 #define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans) 1695 #define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans) 1696 #define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans) 1697 #define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes) 1698 #define DIOCCLRSRCNODES _IO('D', 85) 1699 #define DIOCSETHOSTID _IOWR('D', 86, u_int32_t) 1700 #define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface) 1701 #define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface) 1702 #define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface) 1703 #define DIOCKILLSRCNODES _IOWR('D', 91, struct pfioc_src_node_kill) 1704 #define DIOCSETREASS _IOWR('D', 92, u_int32_t) 1705 1706 #ifdef _KERNEL 1707 RB_HEAD(pf_src_tree, pf_src_node); 1708 RB_PROTOTYPE(pf_src_tree, pf_src_node, entry, pf_src_compare); 1709 extern struct pf_src_tree tree_src_tracking; 1710 1711 RB_HEAD(pf_state_tree_id, pf_state); 1712 RB_PROTOTYPE(pf_state_tree_id, pf_state, 1713 entry_id, pf_state_compare_id); 1714 extern struct pf_state_tree_id tree_id; 1715 extern struct pf_state_queue state_list; 1716 1717 TAILQ_HEAD(pf_poolqueue, pf_pool); 1718 TAILQ_HEAD(pf_altqqueue, pf_altq); 1719 extern struct pf_altqqueue pf_altqs[2]; 1720 1721 extern u_int32_t ticket_altqs_active; 1722 extern u_int32_t ticket_altqs_inactive; 1723 extern int altqs_inactive_open; 1724 extern u_int32_t ticket_pabuf; 1725 extern struct pf_altqqueue *pf_altqs_active; 1726 extern struct pf_altqqueue *pf_altqs_inactive; 1727 extern struct pf_poolqueue *pf_pools_active; 1728 extern struct pf_poolqueue *pf_pools_inactive; 1729 extern int pf_tbladdr_setup(struct pf_ruleset *, 1730 struct pf_addr_wrap *); 1731 extern void pf_tbladdr_remove(struct pf_addr_wrap *); 1732 extern void pf_tbladdr_copyout(struct pf_addr_wrap *); 1733 extern void pf_calc_skip_steps(struct pf_rulequeue *); 1734 extern struct pool pf_src_tree_pl, pf_sn_item_pl, pf_rule_pl; 1735 extern struct pool pf_state_pl, pf_state_key_pl, pf_state_item_pl, 1736 pf_altq_pl, pf_rule_item_pl; 1737 extern struct pool pf_state_scrub_pl; 1738 extern void pf_purge_thread(void *); 1739 extern void pf_purge_expired_src_nodes(int); 1740 extern void pf_purge_expired_states(u_int32_t); 1741 extern void pf_unlink_state(struct pf_state *); 1742 extern void pf_free_state(struct pf_state *); 1743 extern int pf_state_insert(struct pfi_kif *, 1744 struct pf_state_key *, 1745 struct pf_state_key *, 1746 struct pf_state *); 1747 int pf_insert_src_node(struct pf_src_node **, 1748 struct pf_rule *, enum pf_sn_types, 1749 sa_family_t, struct pf_addr *, 1750 struct pf_addr *, int); 1751 void pf_remove_src_node(struct pf_src_node *); 1752 struct pf_src_node *pf_get_src_node(struct pf_state *, 1753 enum pf_sn_types); 1754 void pf_src_tree_remove_state(struct pf_state *); 1755 void pf_state_rm_src_node(struct pf_state *, 1756 struct pf_src_node *); 1757 1758 extern struct pf_state *pf_find_state_byid(struct pf_state_cmp *); 1759 extern struct pf_state *pf_find_state_all(struct pf_state_key_cmp *, 1760 u_int, int *); 1761 extern void pf_print_state(struct pf_state *); 1762 extern void pf_print_flags(u_int8_t); 1763 extern u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t, 1764 u_int8_t); 1765 1766 extern struct ifnet *sync_ifp; 1767 extern struct pf_rule pf_default_rule; 1768 extern void pf_addrcpy(struct pf_addr *, struct pf_addr *, 1769 u_int8_t); 1770 void pf_rm_rule(struct pf_rulequeue *, 1771 struct pf_rule *); 1772 void pf_purge_rule(struct pf_ruleset *, 1773 struct pf_rule *); 1774 struct pf_divert *pf_find_divert(struct mbuf *); 1775 int pf_setup_pdesc(sa_family_t, int, 1776 struct pf_pdesc *, struct mbuf **, 1777 u_short *, u_short *, struct pfi_kif *, 1778 struct pf_rule **, struct pf_rule **, 1779 struct pf_state **, struct pf_ruleset **, 1780 int *, int *); 1781 1782 int pf_test(sa_family_t, int, struct ifnet *, struct mbuf **, 1783 struct ether_header *); 1784 1785 #ifdef INET6 1786 void pf_poolmask(struct pf_addr *, struct pf_addr*, 1787 struct pf_addr *, struct pf_addr *, u_int8_t); 1788 void pf_addr_inc(struct pf_addr *, sa_family_t); 1789 #endif /* INET6 */ 1790 1791 void *pf_pull_hdr(struct mbuf *, int, void *, int, u_short *, u_short *, 1792 sa_family_t); 1793 void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t); 1794 int pflog_packet(struct pfi_kif *, struct mbuf *, u_int8_t, 1795 u_int8_t, struct pf_rule *, struct pf_rule *, struct pf_ruleset *, 1796 struct pf_pdesc *); 1797 void pf_send_deferred_syn(struct pf_state *); 1798 int pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *, 1799 struct pf_addr *, sa_family_t); 1800 int pf_match_addr_range(struct pf_addr *, struct pf_addr *, 1801 struct pf_addr *, sa_family_t); 1802 int pf_match(u_int8_t, u_int32_t, u_int32_t, u_int32_t); 1803 int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t); 1804 int pf_match_uid(u_int8_t, uid_t, uid_t, uid_t); 1805 int pf_match_gid(u_int8_t, gid_t, gid_t, gid_t); 1806 1807 int pf_refragment6(struct mbuf **, struct m_tag *mtag, int); 1808 void pf_normalize_init(void); 1809 int pf_normalize_ip(struct mbuf **, int, u_short *); 1810 int pf_normalize_ip6(struct mbuf **, int, int, int, u_short *); 1811 int pf_normalize_tcp(int, struct mbuf *, int, struct pf_pdesc *); 1812 void pf_normalize_tcp_cleanup(struct pf_state *); 1813 int pf_normalize_tcp_init(struct mbuf *, int, struct pf_pdesc *, 1814 struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *); 1815 int pf_normalize_tcp_stateful(struct mbuf *, int, struct pf_pdesc *, 1816 u_short *, struct tcphdr *, struct pf_state *, 1817 struct pf_state_peer *, struct pf_state_peer *, int *); 1818 int pf_normalize_mss(struct mbuf *, int, struct pf_pdesc *, u_int16_t); 1819 void pf_scrub(struct mbuf *, u_int16_t, sa_family_t, u_int8_t, u_int8_t); 1820 u_int32_t 1821 pf_state_expires(const struct pf_state *); 1822 void pf_purge_expired_fragments(void); 1823 int pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kif *, 1824 int); 1825 int pf_rtlabel_match(struct pf_addr *, sa_family_t, struct pf_addr_wrap *, 1826 int); 1827 int pf_socket_lookup(int, struct pf_pdesc *); 1828 struct pf_state_key *pf_alloc_state_key(int); 1829 void pf_pkt_addr_changed(struct mbuf *); 1830 int pf_state_key_attach(struct pf_state_key *, struct pf_state *, int); 1831 int pf_translate(struct pf_pdesc *, struct pf_addr *, u_int16_t, 1832 struct pf_addr *, u_int16_t, u_int16_t, int); 1833 1834 void pfr_initialize(void); 1835 int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t); 1836 void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t, 1837 u_int64_t, int, int, int); 1838 int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, 1839 struct pf_addr **, struct pf_addr **, struct pfi_kif **, 1840 u_int64_t *, u_int16_t *, int *, 1841 sa_family_t, int (*)(sa_family_t, struct pf_addr *)); 1842 int pfr_states_increase(struct pfr_ktable *, struct pf_addr *, int); 1843 int pfr_states_decrease(struct pfr_ktable *, struct pf_addr *, int); 1844 struct pfr_kentry * 1845 pfr_kentry_byaddr(struct pfr_ktable *, struct pf_addr *, sa_family_t, 1846 int); 1847 void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *); 1848 struct pfr_ktable * 1849 pfr_attach_table(struct pf_ruleset *, char *, int); 1850 void pfr_detach_table(struct pfr_ktable *); 1851 int pfr_clr_tables(struct pfr_table *, int *, int); 1852 int pfr_add_tables(struct pfr_table *, int, int *, int); 1853 int pfr_del_tables(struct pfr_table *, int, int *, int); 1854 int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int); 1855 int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int); 1856 int pfr_clr_tstats(struct pfr_table *, int, int *, int); 1857 int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int); 1858 int pfr_clr_addrs(struct pfr_table *, int *, int); 1859 int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *, long); 1860 int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1861 int); 1862 int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1863 int); 1864 int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1865 int *, int *, int *, int, u_int32_t); 1866 int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int); 1867 int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int); 1868 int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *, 1869 int); 1870 int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1871 int); 1872 int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int); 1873 int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int); 1874 int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int); 1875 int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *, 1876 int *, u_int32_t, int); 1877 1878 extern struct pfi_kif *pfi_all; 1879 1880 void pfi_initialize(void); 1881 struct pfi_kif *pfi_kif_get(const char *); 1882 void pfi_kif_ref(struct pfi_kif *, enum pfi_kif_refs); 1883 void pfi_kif_unref(struct pfi_kif *, enum pfi_kif_refs); 1884 int pfi_kif_match(struct pfi_kif *, struct pfi_kif *); 1885 void pfi_attach_ifnet(struct ifnet *); 1886 void pfi_detach_ifnet(struct ifnet *); 1887 void pfi_attach_ifgroup(struct ifg_group *); 1888 void pfi_detach_ifgroup(struct ifg_group *); 1889 void pfi_group_change(const char *); 1890 int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *, 1891 sa_family_t); 1892 int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t); 1893 void pfi_dynaddr_remove(struct pf_addr_wrap *); 1894 void pfi_dynaddr_copyout(struct pf_addr_wrap *); 1895 void pfi_update_status(const char *, struct pf_status *); 1896 int pfi_get_ifaces(const char *, struct pfi_kif *, int *); 1897 int pfi_set_flags(const char *, int); 1898 int pfi_clear_flags(const char *, int); 1899 void pfi_xcommit(void); 1900 1901 int pf_match_tag(struct mbuf *, struct pf_rule *, int *); 1902 u_int16_t pf_tagname2tag(char *); 1903 void pf_tag2tagname(u_int16_t, char *); 1904 void pf_tag_ref(u_int16_t); 1905 void pf_tag_unref(u_int16_t); 1906 void pf_tag_packet(struct mbuf *, int, int); 1907 u_int32_t pf_qname2qid(char *); 1908 void pf_qid2qname(u_int32_t, char *); 1909 void pf_qid_unref(u_int32_t); 1910 int pf_addr_compare(struct pf_addr *, struct pf_addr *, 1911 sa_family_t); 1912 1913 extern struct pf_status pf_status; 1914 extern struct pool pf_frent_pl, pf_frag_pl; 1915 extern struct rwlock pf_consistency_lock; 1916 1917 struct pf_pool_limit { 1918 void *pp; 1919 unsigned limit; 1920 unsigned limit_new; 1921 }; 1922 extern struct pf_pool_limit pf_pool_limits[PF_LIMIT_MAX]; 1923 1924 #endif /* _KERNEL */ 1925 1926 extern struct pf_anchor_global pf_anchors; 1927 extern struct pf_anchor pf_main_anchor; 1928 #define pf_main_ruleset pf_main_anchor.ruleset 1929 1930 /* these ruleset functions can be linked into userland programs (pfctl) */ 1931 void pf_init_ruleset(struct pf_ruleset *); 1932 int pf_anchor_setup(struct pf_rule *, 1933 const struct pf_ruleset *, const char *); 1934 int pf_anchor_copyout(const struct pf_ruleset *, 1935 const struct pf_rule *, struct pfioc_rule *); 1936 void pf_anchor_remove(struct pf_rule *); 1937 void pf_remove_if_empty_ruleset(struct pf_ruleset *); 1938 struct pf_anchor *pf_find_anchor(const char *); 1939 struct pf_ruleset *pf_find_ruleset(const char *); 1940 struct pf_ruleset *pf_find_or_create_ruleset(const char *); 1941 void pf_rs_initialize(void); 1942 1943 #ifdef _KERNEL 1944 int pf_anchor_copyout(const struct pf_ruleset *, 1945 const struct pf_rule *, struct pfioc_rule *); 1946 void pf_anchor_remove(struct pf_rule *); 1947 1948 #endif /* _KERNEL */ 1949 1950 /* The fingerprint functions can be linked into userland programs (tcpdump) */ 1951 int pf_osfp_add(struct pf_osfp_ioctl *); 1952 #ifdef _KERNEL 1953 struct pf_osfp_enlist * 1954 pf_osfp_fingerprint(struct pf_pdesc *, struct mbuf *, int, 1955 const struct tcphdr *); 1956 #endif /* _KERNEL */ 1957 struct pf_osfp_enlist * 1958 pf_osfp_fingerprint_hdr(const struct ip *, const struct ip6_hdr *, 1959 const struct tcphdr *); 1960 void pf_osfp_flush(void); 1961 int pf_osfp_get(struct pf_osfp_ioctl *); 1962 void pf_osfp_initialize(void); 1963 int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t); 1964 struct pf_os_fingerprint * 1965 pf_osfp_validate(void); 1966 1967 #ifdef _KERNEL 1968 void pf_print_host(struct pf_addr *, u_int16_t, u_int8_t); 1969 1970 void pf_step_into_anchor(int *, struct pf_ruleset **, 1971 struct pf_rule **, struct pf_rule **, int *); 1972 int pf_step_out_of_anchor(int *, struct pf_ruleset **, 1973 struct pf_rule **, struct pf_rule **, 1974 int *); 1975 1976 int pf_get_transaddr(struct pf_rule *, struct pf_pdesc *, 1977 struct pf_src_node **, struct pf_rule **); 1978 1979 int pf_map_addr(sa_family_t, struct pf_rule *, 1980 struct pf_addr *, struct pf_addr *, 1981 struct pf_addr *, struct pf_src_node **, 1982 struct pf_pool *, enum pf_sn_types); 1983 1984 int pf_postprocess_addr(struct pf_state *); 1985 1986 #endif /* _KERNEL */ 1987 1988 1989 #endif /* _NET_PFVAR_H_ */ 1990