1 /* $OpenBSD: pfvar.h,v 1.285 2009/04/06 12:05:55 henning Exp $ */ 2 3 /* 4 * Copyright (c) 2001 Daniel Hartmeier 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * - Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * - Redistributions in binary form must reproduce the above 14 * copyright notice, this list of conditions and the following 15 * disclaimer in the documentation and/or other materials provided 16 * with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 21 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 22 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 24 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 25 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 26 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 28 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 * 31 */ 32 33 #ifndef _NET_PFVAR_H_ 34 #define _NET_PFVAR_H_ 35 36 #include <sys/param.h> 37 #include <sys/types.h> 38 #include <sys/queue.h> 39 #include <sys/tree.h> 40 #include <sys/rwlock.h> 41 42 #include <net/radix.h> 43 #include <net/route.h> 44 #include <netinet/ip_ipsp.h> 45 #include <netinet/tcp_fsm.h> 46 47 struct ip; 48 struct ip6_hdr; 49 50 #define PF_TCPS_PROXY_SRC ((TCP_NSTATES)+0) 51 #define PF_TCPS_PROXY_DST ((TCP_NSTATES)+1) 52 53 #define PF_MD5_DIGEST_LENGTH 16 54 #ifdef MD5_DIGEST_LENGTH 55 #if PF_MD5_DIGEST_LENGTH != MD5_DIGEST_LENGTH 56 #error 57 #endif 58 #endif 59 60 enum { PF_INOUT, PF_IN, PF_OUT }; 61 enum { PF_PASS, PF_DROP, PF_SCRUB, PF_NOSCRUB, PF_NAT, PF_NONAT, 62 PF_BINAT, PF_NOBINAT, PF_RDR, PF_NORDR, PF_SYNPROXY_DROP, PF_DEFER, 63 PF_MATCH }; 64 enum { PF_RULESET_FILTER, PF_RULESET_NAT, PF_RULESET_BINAT, 65 PF_RULESET_RDR, PF_RULESET_MAX }; 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_DEBUG_NONE, PF_DEBUG_URGENT, PF_DEBUG_MISC, PF_DEBUG_NOISY }; 69 enum { PF_CHANGE_NONE, PF_CHANGE_ADD_HEAD, PF_CHANGE_ADD_TAIL, 70 PF_CHANGE_ADD_BEFORE, PF_CHANGE_ADD_AFTER, 71 PF_CHANGE_REMOVE, PF_CHANGE_GET_TICKET }; 72 enum { PF_GET_NONE, PF_GET_CLR_CNTR }; 73 enum { PF_SK_WIRE, PF_SK_STACK, PF_SK_BOTH }; 74 75 /* 76 * Note about PFTM_*: real indices into pf_rule.timeout[] come before 77 * PFTM_MAX, special cases afterwards. See pf_state_expires(). 78 */ 79 enum { PFTM_TCP_FIRST_PACKET, PFTM_TCP_OPENING, PFTM_TCP_ESTABLISHED, 80 PFTM_TCP_CLOSING, PFTM_TCP_FIN_WAIT, PFTM_TCP_CLOSED, 81 PFTM_UDP_FIRST_PACKET, PFTM_UDP_SINGLE, PFTM_UDP_MULTIPLE, 82 PFTM_ICMP_FIRST_PACKET, PFTM_ICMP_ERROR_REPLY, 83 PFTM_OTHER_FIRST_PACKET, PFTM_OTHER_SINGLE, 84 PFTM_OTHER_MULTIPLE, PFTM_FRAG, PFTM_INTERVAL, 85 PFTM_ADAPTIVE_START, PFTM_ADAPTIVE_END, PFTM_SRC_NODE, 86 PFTM_TS_DIFF, PFTM_MAX, PFTM_PURGE, PFTM_UNLINKED, 87 PFTM_UNTIL_PACKET }; 88 89 /* PFTM default values */ 90 #define PFTM_TCP_FIRST_PACKET_VAL 120 /* First TCP packet */ 91 #define PFTM_TCP_OPENING_VAL 30 /* No response yet */ 92 #define PFTM_TCP_ESTABLISHED_VAL 24*60*60/* Established */ 93 #define PFTM_TCP_CLOSING_VAL 15 * 60 /* Half closed */ 94 #define PFTM_TCP_FIN_WAIT_VAL 45 /* Got both FINs */ 95 #define PFTM_TCP_CLOSED_VAL 90 /* Got a RST */ 96 #define PFTM_UDP_FIRST_PACKET_VAL 60 /* First UDP packet */ 97 #define PFTM_UDP_SINGLE_VAL 30 /* Unidirectional */ 98 #define PFTM_UDP_MULTIPLE_VAL 60 /* Bidirectional */ 99 #define PFTM_ICMP_FIRST_PACKET_VAL 20 /* First ICMP packet */ 100 #define PFTM_ICMP_ERROR_REPLY_VAL 10 /* Got error response */ 101 #define PFTM_OTHER_FIRST_PACKET_VAL 60 /* First packet */ 102 #define PFTM_OTHER_SINGLE_VAL 30 /* Unidirectional */ 103 #define PFTM_OTHER_MULTIPLE_VAL 60 /* Bidirectional */ 104 #define PFTM_FRAG_VAL 30 /* Fragment expire */ 105 #define PFTM_INTERVAL_VAL 10 /* Expire interval */ 106 #define PFTM_SRC_NODE_VAL 0 /* Source tracking */ 107 #define PFTM_TS_DIFF_VAL 30 /* Allowed TS diff */ 108 109 enum { PF_NOPFROUTE, PF_FASTROUTE, PF_ROUTETO, PF_DUPTO, PF_REPLYTO }; 110 enum { PF_LIMIT_STATES, PF_LIMIT_SRC_NODES, PF_LIMIT_FRAGS, 111 PF_LIMIT_TABLES, PF_LIMIT_TABLE_ENTRIES, PF_LIMIT_MAX }; 112 #define PF_POOL_IDMASK 0x0f 113 enum { PF_POOL_NONE, PF_POOL_BITMASK, PF_POOL_RANDOM, 114 PF_POOL_SRCHASH, PF_POOL_ROUNDROBIN }; 115 enum { PF_ADDR_ADDRMASK, PF_ADDR_NOROUTE, PF_ADDR_DYNIFTL, 116 PF_ADDR_TABLE, PF_ADDR_RTLABEL, PF_ADDR_URPFFAILED, 117 PF_ADDR_RANGE }; 118 #define PF_POOL_TYPEMASK 0x0f 119 #define PF_POOL_STICKYADDR 0x20 120 #define PF_WSCALE_FLAG 0x80 121 #define PF_WSCALE_MASK 0x0f 122 123 #define PF_LOG 0x01 124 #define PF_LOG_ALL 0x02 125 #define PF_LOG_SOCKET_LOOKUP 0x04 126 #define PF_LOG_FORCE 0x08 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 }; 189 190 /* 191 * Address manipulation macros 192 */ 193 194 #ifdef INET 195 #ifndef INET6 196 #define PF_INET_ONLY 197 #endif /* ! INET6 */ 198 #endif /* INET */ 199 200 #ifdef INET6 201 #ifndef INET 202 #define PF_INET6_ONLY 203 #endif /* ! INET */ 204 #endif /* INET6 */ 205 206 #ifdef INET 207 #ifdef INET6 208 #define PF_INET_INET6 209 #endif /* INET6 */ 210 #endif /* INET */ 211 212 #else 213 214 #define PF_INET_INET6 215 216 #endif /* _KERNEL */ 217 218 /* Both IPv4 and IPv6 */ 219 #ifdef PF_INET_INET6 220 221 #define PF_AEQ(a, b, c) \ 222 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \ 223 ((a)->addr32[3] == (b)->addr32[3] && \ 224 (a)->addr32[2] == (b)->addr32[2] && \ 225 (a)->addr32[1] == (b)->addr32[1] && \ 226 (a)->addr32[0] == (b)->addr32[0])) \ 227 228 #define PF_ANEQ(a, b, c) \ 229 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \ 230 ((a)->addr32[3] != (b)->addr32[3] || \ 231 (a)->addr32[2] != (b)->addr32[2] || \ 232 (a)->addr32[1] != (b)->addr32[1] || \ 233 (a)->addr32[0] != (b)->addr32[0])) \ 234 235 #define PF_AZERO(a, c) \ 236 ((c == AF_INET && !(a)->addr32[0]) || \ 237 (!(a)->addr32[0] && !(a)->addr32[1] && \ 238 !(a)->addr32[2] && !(a)->addr32[3] )) \ 239 240 #define PF_MATCHA(n, a, m, b, f) \ 241 pf_match_addr(n, a, m, b, f) 242 243 #define PF_ACPY(a, b, f) \ 244 pf_addrcpy(a, b, f) 245 246 #define PF_AINC(a, f) \ 247 pf_addr_inc(a, f) 248 249 #define PF_POOLMASK(a, b, c, d, f) \ 250 pf_poolmask(a, b, c, d, f) 251 252 #else 253 254 /* Just IPv6 */ 255 256 #ifdef PF_INET6_ONLY 257 258 #define PF_AEQ(a, b, c) \ 259 ((a)->addr32[3] == (b)->addr32[3] && \ 260 (a)->addr32[2] == (b)->addr32[2] && \ 261 (a)->addr32[1] == (b)->addr32[1] && \ 262 (a)->addr32[0] == (b)->addr32[0]) \ 263 264 #define PF_ANEQ(a, b, c) \ 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 (!(a)->addr32[0] && \ 272 !(a)->addr32[1] && \ 273 !(a)->addr32[2] && \ 274 !(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 IPv4 */ 291 #ifdef PF_INET_ONLY 292 293 #define PF_AEQ(a, b, c) \ 294 ((a)->addr32[0] == (b)->addr32[0]) 295 296 #define PF_ANEQ(a, b, c) \ 297 ((a)->addr32[0] != (b)->addr32[0]) 298 299 #define PF_AZERO(a, c) \ 300 (!(a)->addr32[0]) 301 302 #define PF_MATCHA(n, a, m, b, f) \ 303 pf_match_addr(n, a, m, b, f) 304 305 #define PF_ACPY(a, b, f) \ 306 (a)->v4.s_addr = (b)->v4.s_addr 307 308 #define PF_AINC(a, f) \ 309 do { \ 310 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \ 311 } while (0) 312 313 #define PF_POOLMASK(a, b, c, d, f) \ 314 do { \ 315 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \ 316 (((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \ 317 } while (0) 318 319 #endif /* PF_INET_ONLY */ 320 #endif /* PF_INET6_ONLY */ 321 #endif /* PF_INET_INET6 */ 322 323 #define PF_MISMATCHAW(aw, x, af, neg, ifp) \ 324 ( \ 325 (((aw)->type == PF_ADDR_NOROUTE && \ 326 pf_routable((x), (af), NULL)) || \ 327 (((aw)->type == PF_ADDR_URPFFAILED && (ifp) != NULL && \ 328 pf_routable((x), (af), (ifp))) || \ 329 ((aw)->type == PF_ADDR_RTLABEL && \ 330 !pf_rtlabel_match((x), (af), (aw))) || \ 331 ((aw)->type == PF_ADDR_TABLE && \ 332 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \ 333 ((aw)->type == PF_ADDR_DYNIFTL && \ 334 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \ 335 ((aw)->type == PF_ADDR_RANGE && \ 336 !pf_match_addr_range(&(aw)->v.a.addr, \ 337 &(aw)->v.a.mask, (x), (af))) || \ 338 ((aw)->type == PF_ADDR_ADDRMASK && \ 339 !PF_AZERO(&(aw)->v.a.mask, (af)) && \ 340 !PF_MATCHA(0, &(aw)->v.a.addr, \ 341 &(aw)->v.a.mask, (x), (af))))) != \ 342 (neg) \ 343 ) 344 345 346 struct pf_rule_uid { 347 uid_t uid[2]; 348 u_int8_t op; 349 }; 350 351 struct pf_rule_gid { 352 uid_t gid[2]; 353 u_int8_t op; 354 }; 355 356 struct pf_rule_addr { 357 struct pf_addr_wrap addr; 358 u_int16_t port[2]; 359 u_int8_t neg; 360 u_int8_t port_op; 361 }; 362 363 struct pf_pooladdr { 364 struct pf_addr_wrap addr; 365 TAILQ_ENTRY(pf_pooladdr) entries; 366 char ifname[IFNAMSIZ]; 367 struct pfi_kif *kif; 368 }; 369 370 TAILQ_HEAD(pf_palist, pf_pooladdr); 371 372 struct pf_poolhashkey { 373 union { 374 u_int8_t key8[16]; 375 u_int16_t key16[8]; 376 u_int32_t key32[4]; 377 } pfk; /* 128-bit hash key */ 378 #define key8 pfk.key8 379 #define key16 pfk.key16 380 #define key32 pfk.key32 381 }; 382 383 struct pf_pool { 384 struct pf_palist list; 385 struct pf_pooladdr *cur; 386 struct pf_poolhashkey key; 387 struct pf_addr counter; 388 int tblidx; 389 u_int16_t proxy_port[2]; 390 u_int8_t port_op; 391 u_int8_t opts; 392 }; 393 394 395 /* A packed Operating System description for fingerprinting */ 396 typedef u_int32_t pf_osfp_t; 397 #define PF_OSFP_ANY ((pf_osfp_t)0) 398 #define PF_OSFP_UNKNOWN ((pf_osfp_t)-1) 399 #define PF_OSFP_NOMATCH ((pf_osfp_t)-2) 400 401 struct pf_osfp_entry { 402 SLIST_ENTRY(pf_osfp_entry) fp_entry; 403 pf_osfp_t fp_os; 404 int fp_enflags; 405 #define PF_OSFP_EXPANDED 0x001 /* expanded entry */ 406 #define PF_OSFP_GENERIC 0x002 /* generic signature */ 407 #define PF_OSFP_NODETAIL 0x004 /* no p0f details */ 408 #define PF_OSFP_LEN 32 409 char fp_class_nm[PF_OSFP_LEN]; 410 char fp_version_nm[PF_OSFP_LEN]; 411 char fp_subtype_nm[PF_OSFP_LEN]; 412 }; 413 #define PF_OSFP_ENTRY_EQ(a, b) \ 414 ((a)->fp_os == (b)->fp_os && \ 415 memcmp((a)->fp_class_nm, (b)->fp_class_nm, PF_OSFP_LEN) == 0 && \ 416 memcmp((a)->fp_version_nm, (b)->fp_version_nm, PF_OSFP_LEN) == 0 && \ 417 memcmp((a)->fp_subtype_nm, (b)->fp_subtype_nm, PF_OSFP_LEN) == 0) 418 419 /* handle pf_osfp_t packing */ 420 #define _FP_RESERVED_BIT 1 /* For the special negative #defines */ 421 #define _FP_UNUSED_BITS 1 422 #define _FP_CLASS_BITS 10 /* OS Class (Windows, Linux) */ 423 #define _FP_VERSION_BITS 10 /* OS version (95, 98, NT, 2.4.54, 3.2) */ 424 #define _FP_SUBTYPE_BITS 10 /* patch level (NT SP4, SP3, ECN patch) */ 425 #define PF_OSFP_UNPACK(osfp, class, version, subtype) do { \ 426 (class) = ((osfp) >> (_FP_VERSION_BITS+_FP_SUBTYPE_BITS)) & \ 427 ((1 << _FP_CLASS_BITS) - 1); \ 428 (version) = ((osfp) >> _FP_SUBTYPE_BITS) & \ 429 ((1 << _FP_VERSION_BITS) - 1);\ 430 (subtype) = (osfp) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 431 } while(0) 432 #define PF_OSFP_PACK(osfp, class, version, subtype) do { \ 433 (osfp) = ((class) & ((1 << _FP_CLASS_BITS) - 1)) << (_FP_VERSION_BITS \ 434 + _FP_SUBTYPE_BITS); \ 435 (osfp) |= ((version) & ((1 << _FP_VERSION_BITS) - 1)) << \ 436 _FP_SUBTYPE_BITS; \ 437 (osfp) |= (subtype) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 438 } while(0) 439 440 /* the fingerprint of an OSes TCP SYN packet */ 441 typedef u_int64_t pf_tcpopts_t; 442 struct pf_os_fingerprint { 443 SLIST_HEAD(pf_osfp_enlist, pf_osfp_entry) fp_oses; /* list of matches */ 444 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 445 u_int16_t fp_wsize; /* TCP window size */ 446 u_int16_t fp_psize; /* ip->ip_len */ 447 u_int16_t fp_mss; /* TCP MSS */ 448 u_int16_t fp_flags; 449 #define PF_OSFP_WSIZE_MOD 0x0001 /* Window modulus */ 450 #define PF_OSFP_WSIZE_DC 0x0002 /* Window don't care */ 451 #define PF_OSFP_WSIZE_MSS 0x0004 /* Window multiple of MSS */ 452 #define PF_OSFP_WSIZE_MTU 0x0008 /* Window multiple of MTU */ 453 #define PF_OSFP_PSIZE_MOD 0x0010 /* packet size modulus */ 454 #define PF_OSFP_PSIZE_DC 0x0020 /* packet size don't care */ 455 #define PF_OSFP_WSCALE 0x0040 /* TCP window scaling */ 456 #define PF_OSFP_WSCALE_MOD 0x0080 /* TCP window scale modulus */ 457 #define PF_OSFP_WSCALE_DC 0x0100 /* TCP window scale dont-care */ 458 #define PF_OSFP_MSS 0x0200 /* TCP MSS */ 459 #define PF_OSFP_MSS_MOD 0x0400 /* TCP MSS modulus */ 460 #define PF_OSFP_MSS_DC 0x0800 /* TCP MSS dont-care */ 461 #define PF_OSFP_DF 0x1000 /* IPv4 don't fragment bit */ 462 #define PF_OSFP_TS0 0x2000 /* Zero timestamp */ 463 #define PF_OSFP_INET6 0x4000 /* IPv6 */ 464 u_int8_t fp_optcnt; /* TCP option count */ 465 u_int8_t fp_wscale; /* TCP window scaling */ 466 u_int8_t fp_ttl; /* IPv4 TTL */ 467 #define PF_OSFP_MAXTTL_OFFSET 40 468 /* TCP options packing */ 469 #define PF_OSFP_TCPOPT_NOP 0x0 /* TCP NOP option */ 470 #define PF_OSFP_TCPOPT_WSCALE 0x1 /* TCP window scaling option */ 471 #define PF_OSFP_TCPOPT_MSS 0x2 /* TCP max segment size opt */ 472 #define PF_OSFP_TCPOPT_SACK 0x3 /* TCP SACK OK option */ 473 #define PF_OSFP_TCPOPT_TS 0x4 /* TCP timestamp option */ 474 #define PF_OSFP_TCPOPT_BITS 3 /* bits used by each option */ 475 #define PF_OSFP_MAX_OPTS \ 476 (sizeof(((struct pf_os_fingerprint *)0)->fp_tcpopts) * 8) \ 477 / PF_OSFP_TCPOPT_BITS 478 479 SLIST_ENTRY(pf_os_fingerprint) fp_next; 480 }; 481 482 struct pf_osfp_ioctl { 483 struct pf_osfp_entry fp_os; 484 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 485 u_int16_t fp_wsize; /* TCP window size */ 486 u_int16_t fp_psize; /* ip->ip_len */ 487 u_int16_t fp_mss; /* TCP MSS */ 488 u_int16_t fp_flags; 489 u_int8_t fp_optcnt; /* TCP option count */ 490 u_int8_t fp_wscale; /* TCP window scaling */ 491 u_int8_t fp_ttl; /* IPv4 TTL */ 492 493 int fp_getnum; /* DIOCOSFPGET number */ 494 }; 495 496 struct pf_rule_actions { 497 int rtableid; 498 u_int16_t qid; 499 u_int16_t pqid; 500 u_int16_t max_mss; 501 u_int8_t log; 502 u_int8_t set_tos; 503 u_int8_t min_ttl; 504 u_int8_t flags; 505 u_int8_t pad[2]; 506 }; 507 508 union pf_rule_ptr { 509 struct pf_rule *ptr; 510 u_int32_t nr; 511 }; 512 513 #define PF_ANCHOR_NAME_SIZE 64 514 515 struct pf_rule { 516 struct pf_rule_addr src; 517 struct pf_rule_addr dst; 518 #define PF_SKIP_IFP 0 519 #define PF_SKIP_DIR 1 520 #define PF_SKIP_AF 2 521 #define PF_SKIP_PROTO 3 522 #define PF_SKIP_SRC_ADDR 4 523 #define PF_SKIP_SRC_PORT 5 524 #define PF_SKIP_DST_ADDR 6 525 #define PF_SKIP_DST_PORT 7 526 #define PF_SKIP_COUNT 8 527 union pf_rule_ptr skip[PF_SKIP_COUNT]; 528 #define PF_RULE_LABEL_SIZE 64 529 char label[PF_RULE_LABEL_SIZE]; 530 #define PF_QNAME_SIZE 64 531 char ifname[IFNAMSIZ]; 532 char qname[PF_QNAME_SIZE]; 533 char pqname[PF_QNAME_SIZE]; 534 #define PF_TAG_NAME_SIZE 64 535 char tagname[PF_TAG_NAME_SIZE]; 536 char match_tagname[PF_TAG_NAME_SIZE]; 537 538 char overload_tblname[PF_TABLE_NAME_SIZE]; 539 540 TAILQ_ENTRY(pf_rule) entries; 541 struct pf_pool rpool; 542 543 u_int64_t evaluations; 544 u_int64_t packets[2]; 545 u_int64_t bytes[2]; 546 547 struct pfi_kif *kif; 548 struct pf_anchor *anchor; 549 struct pfr_ktable *overload_tbl; 550 551 pf_osfp_t os_fingerprint; 552 553 int rtableid; 554 u_int32_t timeout[PFTM_MAX]; 555 u_int32_t states_cur; 556 u_int32_t states_tot; 557 u_int32_t max_states; 558 u_int32_t src_nodes; 559 u_int32_t max_src_nodes; 560 u_int32_t max_src_states; 561 u_int32_t max_src_conn; 562 struct { 563 u_int32_t limit; 564 u_int32_t seconds; 565 } max_src_conn_rate; 566 u_int32_t qid; 567 u_int32_t pqid; 568 u_int32_t rt_listid; 569 u_int32_t nr; 570 u_int32_t prob; 571 uid_t cuid; 572 pid_t cpid; 573 574 u_int16_t return_icmp; 575 u_int16_t return_icmp6; 576 u_int16_t max_mss; 577 u_int16_t tag; 578 u_int16_t match_tag; 579 580 struct pf_rule_uid uid; 581 struct pf_rule_gid gid; 582 583 u_int32_t rule_flag; 584 u_int8_t action; 585 u_int8_t direction; 586 u_int8_t log; 587 u_int8_t logif; 588 u_int8_t quick; 589 u_int8_t ifnot; 590 u_int8_t match_tag_not; 591 u_int8_t natpass; 592 593 #define PF_STATE_NORMAL 0x1 594 #define PF_STATE_MODULATE 0x2 595 #define PF_STATE_SYNPROXY 0x3 596 u_int8_t keep_state; 597 sa_family_t af; 598 u_int8_t proto; 599 u_int8_t type; 600 u_int8_t code; 601 u_int8_t flags; 602 u_int8_t flagset; 603 u_int8_t min_ttl; 604 u_int8_t allow_opts; 605 u_int8_t rt; 606 u_int8_t return_ttl; 607 u_int8_t tos; 608 u_int8_t set_tos; 609 u_int8_t anchor_relative; 610 u_int8_t anchor_wildcard; 611 612 #define PF_FLUSH 0x01 613 #define PF_FLUSH_GLOBAL 0x02 614 u_int8_t flush; 615 u_int8_t scrub_flags; 616 u_int8_t pad2[3]; 617 618 struct { 619 struct pf_addr addr; 620 u_int16_t port; 621 } divert; 622 }; 623 624 /* rule flags */ 625 #define PFRULE_DROP 0x0000 626 #define PFRULE_RETURNRST 0x0001 627 #define PFRULE_FRAGMENT 0x0002 628 #define PFRULE_RETURNICMP 0x0004 629 #define PFRULE_RETURN 0x0008 630 #define PFRULE_NOSYNC 0x0010 631 #define PFRULE_SRCTRACK 0x0020 /* track source states */ 632 #define PFRULE_RULESRCTRACK 0x0040 /* per rule */ 633 634 /* rule flags again */ 635 #define PFRULE_IFBOUND 0x00010000 /* if-bound */ 636 #define PFRULE_STATESLOPPY 0x00020000 /* sloppy state tracking */ 637 #define PFRULE_PFLOW 0x00040000 638 639 #define PFSTATE_HIWAT 10000 /* default state table size */ 640 #define PFSTATE_ADAPT_START 6000 /* default adaptive timeout start */ 641 #define PFSTATE_ADAPT_END 12000 /* default adaptive timeout end */ 642 643 644 struct pf_threshold { 645 u_int32_t limit; 646 #define PF_THRESHOLD_MULT 1000 647 #define PF_THRESHOLD_MAX 0xffffffff / PF_THRESHOLD_MULT 648 u_int32_t seconds; 649 u_int32_t count; 650 u_int32_t last; 651 }; 652 653 struct pf_rule_item { 654 SLIST_ENTRY(pf_rule_item) entry; 655 struct pf_rule *r; 656 }; 657 658 SLIST_HEAD(pf_rule_slist, pf_rule_item); 659 660 struct pf_src_node { 661 RB_ENTRY(pf_src_node) entry; 662 struct pf_addr addr; 663 struct pf_addr raddr; 664 union pf_rule_ptr rule; 665 struct pfi_kif *kif; 666 u_int64_t bytes[2]; 667 u_int64_t packets[2]; 668 u_int32_t states; 669 u_int32_t conn; 670 struct pf_threshold conn_rate; 671 u_int32_t creation; 672 u_int32_t expire; 673 sa_family_t af; 674 u_int8_t ruletype; 675 }; 676 677 #define PFSNODE_HIWAT 10000 /* default source node table size */ 678 679 struct pf_state_scrub { 680 struct timeval pfss_last; /* time received last packet */ 681 u_int32_t pfss_tsecr; /* last echoed timestamp */ 682 u_int32_t pfss_tsval; /* largest timestamp */ 683 u_int32_t pfss_tsval0; /* original timestamp */ 684 u_int16_t pfss_flags; 685 #define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */ 686 #define PFSS_PAWS 0x0010 /* stricter PAWS checks */ 687 #define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */ 688 #define PFSS_DATA_TS 0x0040 /* timestamp on data packets */ 689 #define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */ 690 u_int8_t pfss_ttl; /* stashed TTL */ 691 u_int8_t pad; 692 u_int32_t pfss_ts_mod; /* timestamp modulation */ 693 }; 694 695 struct pf_state_host { 696 struct pf_addr addr; 697 u_int16_t port; 698 u_int16_t pad; 699 }; 700 701 struct pf_state_peer { 702 struct pf_state_scrub *scrub; /* state is scrubbed */ 703 u_int32_t seqlo; /* Max sequence number sent */ 704 u_int32_t seqhi; /* Max the other end ACKd + win */ 705 u_int32_t seqdiff; /* Sequence number modulator */ 706 u_int16_t max_win; /* largest window (pre scaling) */ 707 u_int16_t mss; /* Maximum segment size option */ 708 u_int8_t state; /* active state level */ 709 u_int8_t wscale; /* window scaling factor */ 710 u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */ 711 u_int8_t pad[1]; 712 }; 713 714 TAILQ_HEAD(pf_state_queue, pf_state); 715 716 /* keep synced with struct pf_state_key, used in RB_FIND */ 717 struct pf_state_key_cmp { 718 struct pf_addr addr[2]; 719 u_int16_t port[2]; 720 sa_family_t af; 721 u_int8_t proto; 722 u_int8_t pad[2]; 723 }; 724 725 struct pf_state_item { 726 TAILQ_ENTRY(pf_state_item) entry; 727 struct pf_state *s; 728 }; 729 730 TAILQ_HEAD(pf_statelisthead, pf_state_item); 731 732 struct pf_state_key { 733 struct pf_addr addr[2]; 734 u_int16_t port[2]; 735 sa_family_t af; 736 u_int8_t proto; 737 u_int8_t pad[2]; 738 739 RB_ENTRY(pf_state_key) entry; 740 struct pf_statelisthead states; 741 struct pf_state_key *reverse; 742 struct inpcb *inp; 743 }; 744 745 /* keep synced with struct pf_state, used in RB_FIND */ 746 struct pf_state_cmp { 747 u_int64_t id; 748 u_int32_t creatorid; 749 u_int8_t direction; 750 u_int8_t pad[3]; 751 }; 752 753 struct pf_state { 754 u_int64_t id; 755 u_int32_t creatorid; 756 u_int8_t direction; 757 u_int8_t pad[3]; 758 759 TAILQ_ENTRY(pf_state) sync_list; 760 TAILQ_ENTRY(pf_state) entry_list; 761 RB_ENTRY(pf_state) entry_id; 762 struct pf_state_peer src; 763 struct pf_state_peer dst; 764 struct pf_rule_slist match_rules; 765 union pf_rule_ptr rule; 766 union pf_rule_ptr anchor; 767 union pf_rule_ptr nat_rule; 768 struct pf_addr rt_addr; 769 struct pf_state_key *key[2]; /* addresses stack and wire */ 770 struct pfi_kif *kif; 771 struct pfi_kif *rt_kif; 772 struct pf_src_node *src_node; 773 struct pf_src_node *nat_src_node; 774 u_int64_t packets[2]; 775 u_int64_t bytes[2]; 776 u_int32_t creation; 777 u_int32_t expire; 778 u_int32_t pfsync_time; 779 u_int16_t qid; 780 u_int16_t pqid; 781 u_int16_t tag; 782 u_int16_t state_flags; 783 #define PFSTATE_ALLOWOPTS 0x0001 784 #define PFSTATE_SLOPPY 0x0002 785 #define PFSTATE_PFLOW 0x0004 786 #define PFSTATE_NOSYNC 0x0008 787 #define PFSTATE_ACK 0x0010 788 #define PFSTATE_NODF 0x0020 789 #define PFSTATE_SETTOS 0x0040 790 #define PFSTATE_RANDOMID 0x0080 791 #define PFSTATE_SCRUB_TCP 0x0100 792 u_int8_t log; 793 u_int8_t timeout; 794 u_int8_t sync_state; /* PFSYNC_S_x */ 795 796 /* XXX */ 797 u_int8_t sync_updates; 798 799 int16_t rtableid; 800 u_int8_t min_ttl; 801 u_int8_t set_tos; 802 u_int16_t max_mss; 803 }; 804 805 /* 806 * Unified state structures for pulling states out of the kernel 807 * used by pfsync(4) and the pf(4) ioctl. 808 */ 809 struct pfsync_state_scrub { 810 u_int16_t pfss_flags; 811 u_int8_t pfss_ttl; /* stashed TTL */ 812 #define PFSYNC_SCRUB_FLAG_VALID 0x01 813 u_int8_t scrub_flag; 814 u_int32_t pfss_ts_mod; /* timestamp modulation */ 815 } __packed; 816 817 struct pfsync_state_peer { 818 struct pfsync_state_scrub scrub; /* state is scrubbed */ 819 u_int32_t seqlo; /* Max sequence number sent */ 820 u_int32_t seqhi; /* Max the other end ACKd + win */ 821 u_int32_t seqdiff; /* Sequence number modulator */ 822 u_int16_t max_win; /* largest window (pre scaling) */ 823 u_int16_t mss; /* Maximum segment size option */ 824 u_int8_t state; /* active state level */ 825 u_int8_t wscale; /* window scaling factor */ 826 u_int8_t pad[6]; 827 } __packed; 828 829 struct pfsync_state_key { 830 struct pf_addr addr[2]; 831 u_int16_t port[2]; 832 }; 833 834 struct pfsync_state { 835 u_int32_t id[2]; 836 char ifname[IFNAMSIZ]; 837 struct pfsync_state_key key[2]; 838 struct pfsync_state_peer src; 839 struct pfsync_state_peer dst; 840 struct pf_addr rt_addr; 841 u_int32_t rule; 842 u_int32_t anchor; 843 u_int32_t nat_rule; 844 u_int32_t creation; 845 u_int32_t expire; 846 u_int32_t packets[2][2]; 847 u_int32_t bytes[2][2]; 848 u_int32_t creatorid; 849 sa_family_t af; 850 u_int8_t proto; 851 u_int8_t direction; 852 u_int8_t log; 853 u_int8_t state_flags; 854 u_int8_t timeout; 855 u_int8_t sync_flags; 856 u_int8_t updates; 857 } __packed; 858 859 #define PFSYNC_FLAG_SRCNODE 0x04 860 #define PFSYNC_FLAG_NATSRCNODE 0x08 861 862 /* for copies to/from network byte order */ 863 /* ioctl interface also uses network byte order */ 864 #define pf_state_peer_hton(s,d) do { \ 865 (d)->seqlo = htonl((s)->seqlo); \ 866 (d)->seqhi = htonl((s)->seqhi); \ 867 (d)->seqdiff = htonl((s)->seqdiff); \ 868 (d)->max_win = htons((s)->max_win); \ 869 (d)->mss = htons((s)->mss); \ 870 (d)->state = (s)->state; \ 871 (d)->wscale = (s)->wscale; \ 872 if ((s)->scrub) { \ 873 (d)->scrub.pfss_flags = \ 874 htons((s)->scrub->pfss_flags & PFSS_TIMESTAMP); \ 875 (d)->scrub.pfss_ttl = (s)->scrub->pfss_ttl; \ 876 (d)->scrub.pfss_ts_mod = htonl((s)->scrub->pfss_ts_mod);\ 877 (d)->scrub.scrub_flag = PFSYNC_SCRUB_FLAG_VALID; \ 878 } \ 879 } while (0) 880 881 #define pf_state_peer_ntoh(s,d) do { \ 882 (d)->seqlo = ntohl((s)->seqlo); \ 883 (d)->seqhi = ntohl((s)->seqhi); \ 884 (d)->seqdiff = ntohl((s)->seqdiff); \ 885 (d)->max_win = ntohs((s)->max_win); \ 886 (d)->mss = ntohs((s)->mss); \ 887 (d)->state = (s)->state; \ 888 (d)->wscale = (s)->wscale; \ 889 if ((s)->scrub.scrub_flag == PFSYNC_SCRUB_FLAG_VALID && \ 890 (d)->scrub != NULL) { \ 891 (d)->scrub->pfss_flags = \ 892 ntohs((s)->scrub.pfss_flags) & PFSS_TIMESTAMP; \ 893 (d)->scrub->pfss_ttl = (s)->scrub.pfss_ttl; \ 894 (d)->scrub->pfss_ts_mod = ntohl((s)->scrub.pfss_ts_mod);\ 895 } \ 896 } while (0) 897 898 #define pf_state_counter_hton(s,d) do { \ 899 d[0] = htonl((s>>32)&0xffffffff); \ 900 d[1] = htonl(s&0xffffffff); \ 901 } while (0) 902 903 #define pf_state_counter_from_pfsync(s) \ 904 (((u_int64_t)(s[0])<<32) | (u_int64_t)(s[1])) 905 906 #define pf_state_counter_ntoh(s,d) do { \ 907 d = ntohl(s[0]); \ 908 d = d<<32; \ 909 d += ntohl(s[1]); \ 910 } while (0) 911 912 TAILQ_HEAD(pf_rulequeue, pf_rule); 913 914 struct pf_anchor; 915 916 struct pf_ruleset { 917 struct { 918 struct pf_rulequeue queues[2]; 919 struct { 920 struct pf_rulequeue *ptr; 921 struct pf_rule **ptr_array; 922 u_int32_t rcount; 923 u_int32_t ticket; 924 int open; 925 } active, inactive; 926 } rules[PF_RULESET_MAX]; 927 struct pf_anchor *anchor; 928 u_int32_t tticket; 929 int tables; 930 int topen; 931 }; 932 933 RB_HEAD(pf_anchor_global, pf_anchor); 934 RB_HEAD(pf_anchor_node, pf_anchor); 935 struct pf_anchor { 936 RB_ENTRY(pf_anchor) entry_global; 937 RB_ENTRY(pf_anchor) entry_node; 938 struct pf_anchor *parent; 939 struct pf_anchor_node children; 940 char name[PF_ANCHOR_NAME_SIZE]; 941 char path[MAXPATHLEN]; 942 struct pf_ruleset ruleset; 943 int refcnt; /* anchor rules */ 944 int match; 945 }; 946 RB_PROTOTYPE(pf_anchor_global, pf_anchor, entry_global, pf_anchor_compare); 947 RB_PROTOTYPE(pf_anchor_node, pf_anchor, entry_node, pf_anchor_compare); 948 949 #define PF_RESERVED_ANCHOR "_pf" 950 951 #define PFR_TFLAG_PERSIST 0x00000001 952 #define PFR_TFLAG_CONST 0x00000002 953 #define PFR_TFLAG_ACTIVE 0x00000004 954 #define PFR_TFLAG_INACTIVE 0x00000008 955 #define PFR_TFLAG_REFERENCED 0x00000010 956 #define PFR_TFLAG_REFDANCHOR 0x00000020 957 #define PFR_TFLAG_COUNTERS 0x00000040 958 /* Adjust masks below when adding flags. */ 959 #define PFR_TFLAG_USRMASK 0x00000043 960 #define PFR_TFLAG_SETMASK 0x0000003C 961 #define PFR_TFLAG_ALLMASK 0x0000007F 962 963 struct pfr_table { 964 char pfrt_anchor[MAXPATHLEN]; 965 char pfrt_name[PF_TABLE_NAME_SIZE]; 966 u_int32_t pfrt_flags; 967 u_int8_t pfrt_fback; 968 }; 969 970 enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED, 971 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE, 972 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_NOCOUNT, PFR_FB_MAX }; 973 974 struct pfr_addr { 975 union { 976 struct in_addr _pfra_ip4addr; 977 struct in6_addr _pfra_ip6addr; 978 } pfra_u; 979 u_int8_t pfra_af; 980 u_int8_t pfra_net; 981 u_int8_t pfra_not; 982 u_int8_t pfra_fback; 983 }; 984 #define pfra_ip4addr pfra_u._pfra_ip4addr 985 #define pfra_ip6addr pfra_u._pfra_ip6addr 986 987 enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX }; 988 enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX }; 989 #define PFR_OP_XPASS PFR_OP_ADDR_MAX 990 991 struct pfr_astats { 992 struct pfr_addr pfras_a; 993 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 994 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 995 long pfras_tzero; 996 }; 997 998 enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX }; 999 1000 struct pfr_tstats { 1001 struct pfr_table pfrts_t; 1002 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1003 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1004 u_int64_t pfrts_match; 1005 u_int64_t pfrts_nomatch; 1006 long pfrts_tzero; 1007 int pfrts_cnt; 1008 int pfrts_refcnt[PFR_REFCNT_MAX]; 1009 }; 1010 #define pfrts_name pfrts_t.pfrt_name 1011 #define pfrts_flags pfrts_t.pfrt_flags 1012 1013 struct pfr_kcounters { 1014 u_int64_t pfrkc_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1015 u_int64_t pfrkc_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1016 }; 1017 1018 SLIST_HEAD(pfr_kentryworkq, pfr_kentry); 1019 struct pfr_kentry { 1020 struct radix_node pfrke_node[2]; 1021 union sockaddr_union pfrke_sa; 1022 SLIST_ENTRY(pfr_kentry) pfrke_workq; 1023 union { 1024 1025 struct pfr_kcounters *pfrke_counters; 1026 #if 0 1027 struct pfr_kroute *pfrke_route; 1028 #endif 1029 } u; 1030 long pfrke_tzero; 1031 u_int8_t pfrke_af; 1032 u_int8_t pfrke_net; 1033 u_int8_t pfrke_not; 1034 u_int8_t pfrke_mark; 1035 }; 1036 #define pfrke_counters u.pfrke_counters 1037 #define pfrke_route u.pfrke_route 1038 1039 1040 SLIST_HEAD(pfr_ktableworkq, pfr_ktable); 1041 RB_HEAD(pfr_ktablehead, pfr_ktable); 1042 struct pfr_ktable { 1043 struct pfr_tstats pfrkt_ts; 1044 RB_ENTRY(pfr_ktable) pfrkt_tree; 1045 SLIST_ENTRY(pfr_ktable) pfrkt_workq; 1046 struct radix_node_head *pfrkt_ip4; 1047 struct radix_node_head *pfrkt_ip6; 1048 struct pfr_ktable *pfrkt_shadow; 1049 struct pfr_ktable *pfrkt_root; 1050 struct pf_ruleset *pfrkt_rs; 1051 long pfrkt_larg; 1052 int pfrkt_nflags; 1053 }; 1054 #define pfrkt_t pfrkt_ts.pfrts_t 1055 #define pfrkt_name pfrkt_t.pfrt_name 1056 #define pfrkt_anchor pfrkt_t.pfrt_anchor 1057 #define pfrkt_ruleset pfrkt_t.pfrt_ruleset 1058 #define pfrkt_flags pfrkt_t.pfrt_flags 1059 #define pfrkt_cnt pfrkt_ts.pfrts_cnt 1060 #define pfrkt_refcnt pfrkt_ts.pfrts_refcnt 1061 #define pfrkt_packets pfrkt_ts.pfrts_packets 1062 #define pfrkt_bytes pfrkt_ts.pfrts_bytes 1063 #define pfrkt_match pfrkt_ts.pfrts_match 1064 #define pfrkt_nomatch pfrkt_ts.pfrts_nomatch 1065 #define pfrkt_tzero pfrkt_ts.pfrts_tzero 1066 1067 RB_HEAD(pf_state_tree, pf_state_key); 1068 RB_PROTOTYPE(pf_state_tree, pf_state_key, entry, pf_state_compare_key); 1069 1070 RB_HEAD(pf_state_tree_ext_gwy, pf_state_key); 1071 RB_PROTOTYPE(pf_state_tree_ext_gwy, pf_state_key, 1072 entry_ext_gwy, pf_state_compare_ext_gwy); 1073 1074 RB_HEAD(pfi_ifhead, pfi_kif); 1075 1076 /* state tables */ 1077 extern struct pf_state_tree pf_statetbl; 1078 1079 /* keep synced with pfi_kif, used in RB_FIND */ 1080 struct pfi_kif_cmp { 1081 char pfik_name[IFNAMSIZ]; 1082 }; 1083 1084 struct pfi_kif { 1085 char pfik_name[IFNAMSIZ]; 1086 RB_ENTRY(pfi_kif) pfik_tree; 1087 u_int64_t pfik_packets[2][2][2]; 1088 u_int64_t pfik_bytes[2][2][2]; 1089 u_int32_t pfik_tzero; 1090 int pfik_flags; 1091 int pfik_flags_new; 1092 void *pfik_ah_cookie; 1093 struct ifnet *pfik_ifp; 1094 struct ifg_group *pfik_group; 1095 int pfik_states; 1096 int pfik_rules; 1097 TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs; 1098 }; 1099 1100 enum pfi_kif_refs { 1101 PFI_KIF_REF_NONE, 1102 PFI_KIF_REF_STATE, 1103 PFI_KIF_REF_RULE 1104 }; 1105 1106 #define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */ 1107 1108 struct pf_pdesc { 1109 struct { 1110 int done; 1111 uid_t uid; 1112 gid_t gid; 1113 pid_t pid; 1114 } lookup; 1115 u_int64_t tot_len; /* Make Mickey money */ 1116 union { 1117 struct tcphdr *tcp; 1118 struct udphdr *udp; 1119 struct icmp *icmp; 1120 #ifdef INET6 1121 struct icmp6_hdr *icmp6; 1122 #endif /* INET6 */ 1123 void *any; 1124 } hdr; 1125 1126 struct pf_rule *nat_rule; /* nat/rdr rule applied to packet */ 1127 struct ether_header 1128 *eh; 1129 struct pf_addr *src; /* src address */ 1130 struct pf_addr *dst; /* dst address */ 1131 u_int16_t *sport; 1132 u_int16_t *dport; 1133 1134 u_int32_t p_len; /* total length of payload */ 1135 1136 u_int16_t *ip_sum; 1137 u_int16_t *proto_sum; 1138 u_int16_t flags; 1139 #define PFDESC_IP_REAS 0x0002 /* IP frags would've been reassembled */ 1140 sa_family_t af; 1141 u_int8_t proto; 1142 u_int8_t tos; 1143 u_int8_t dir; /* direction */ 1144 u_int8_t sidx; /* key index for source */ 1145 u_int8_t didx; /* key index for destination */ 1146 }; 1147 1148 /* flags for RDR options */ 1149 #define PF_DPORT_RANGE 0x01 /* Dest port uses range */ 1150 #define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */ 1151 1152 /* Reasons code for passing/dropping a packet */ 1153 #define PFRES_MATCH 0 /* Explicit match of a rule */ 1154 #define PFRES_BADOFF 1 /* Bad offset for pull_hdr */ 1155 #define PFRES_FRAG 2 /* Dropping following fragment */ 1156 #define PFRES_SHORT 3 /* Dropping short packet */ 1157 #define PFRES_NORM 4 /* Dropping by normalizer */ 1158 #define PFRES_MEMORY 5 /* Dropped due to lacking mem */ 1159 #define PFRES_TS 6 /* Bad TCP Timestamp (RFC1323) */ 1160 #define PFRES_CONGEST 7 /* Congestion (of ipintrq) */ 1161 #define PFRES_IPOPTIONS 8 /* IP option */ 1162 #define PFRES_PROTCKSUM 9 /* Protocol checksum invalid */ 1163 #define PFRES_BADSTATE 10 /* State mismatch */ 1164 #define PFRES_STATEINS 11 /* State insertion failure */ 1165 #define PFRES_MAXSTATES 12 /* State limit */ 1166 #define PFRES_SRCLIMIT 13 /* Source node/conn limit */ 1167 #define PFRES_SYNPROXY 14 /* SYN proxy */ 1168 #define PFRES_MAX 15 /* total+1 */ 1169 1170 #define PFRES_NAMES { \ 1171 "match", \ 1172 "bad-offset", \ 1173 "fragment", \ 1174 "short", \ 1175 "normalize", \ 1176 "memory", \ 1177 "bad-timestamp", \ 1178 "congestion", \ 1179 "ip-option", \ 1180 "proto-cksum", \ 1181 "state-mismatch", \ 1182 "state-insert", \ 1183 "state-limit", \ 1184 "src-limit", \ 1185 "synproxy", \ 1186 NULL \ 1187 } 1188 1189 /* Counters for other things we want to keep track of */ 1190 #define LCNT_STATES 0 /* states */ 1191 #define LCNT_SRCSTATES 1 /* max-src-states */ 1192 #define LCNT_SRCNODES 2 /* max-src-nodes */ 1193 #define LCNT_SRCCONN 3 /* max-src-conn */ 1194 #define LCNT_SRCCONNRATE 4 /* max-src-conn-rate */ 1195 #define LCNT_OVERLOAD_TABLE 5 /* entry added to overload table */ 1196 #define LCNT_OVERLOAD_FLUSH 6 /* state entries flushed */ 1197 #define LCNT_MAX 7 /* total+1 */ 1198 1199 #define LCNT_NAMES { \ 1200 "max states per rule", \ 1201 "max-src-states", \ 1202 "max-src-nodes", \ 1203 "max-src-conn", \ 1204 "max-src-conn-rate", \ 1205 "overload table insertion", \ 1206 "overload flush states", \ 1207 NULL \ 1208 } 1209 1210 /* UDP state enumeration */ 1211 #define PFUDPS_NO_TRAFFIC 0 1212 #define PFUDPS_SINGLE 1 1213 #define PFUDPS_MULTIPLE 2 1214 1215 #define PFUDPS_NSTATES 3 /* number of state levels */ 1216 1217 #define PFUDPS_NAMES { \ 1218 "NO_TRAFFIC", \ 1219 "SINGLE", \ 1220 "MULTIPLE", \ 1221 NULL \ 1222 } 1223 1224 /* Other protocol state enumeration */ 1225 #define PFOTHERS_NO_TRAFFIC 0 1226 #define PFOTHERS_SINGLE 1 1227 #define PFOTHERS_MULTIPLE 2 1228 1229 #define PFOTHERS_NSTATES 3 /* number of state levels */ 1230 1231 #define PFOTHERS_NAMES { \ 1232 "NO_TRAFFIC", \ 1233 "SINGLE", \ 1234 "MULTIPLE", \ 1235 NULL \ 1236 } 1237 1238 #define FCNT_STATE_SEARCH 0 1239 #define FCNT_STATE_INSERT 1 1240 #define FCNT_STATE_REMOVALS 2 1241 #define FCNT_MAX 3 1242 1243 #define SCNT_SRC_NODE_SEARCH 0 1244 #define SCNT_SRC_NODE_INSERT 1 1245 #define SCNT_SRC_NODE_REMOVALS 2 1246 #define SCNT_MAX 3 1247 1248 #define ACTION_SET(a, x) \ 1249 do { \ 1250 if ((a) != NULL) \ 1251 *(a) = (x); \ 1252 } while (0) 1253 1254 #define REASON_SET(a, x) \ 1255 do { \ 1256 if ((a) != NULL) \ 1257 *(a) = (x); \ 1258 if (x < PFRES_MAX) \ 1259 pf_status.counters[x]++; \ 1260 } while (0) 1261 1262 struct pf_status { 1263 u_int64_t counters[PFRES_MAX]; 1264 u_int64_t lcounters[LCNT_MAX]; /* limit counters */ 1265 u_int64_t fcounters[FCNT_MAX]; 1266 u_int64_t scounters[SCNT_MAX]; 1267 u_int64_t pcounters[2][2][3]; 1268 u_int64_t bcounters[2][2]; 1269 u_int64_t stateid; 1270 u_int32_t running; 1271 u_int32_t states; 1272 u_int32_t src_nodes; 1273 u_int32_t since; 1274 u_int32_t debug; 1275 u_int32_t hostid; 1276 u_int32_t reass; /* reassembly */ 1277 char ifname[IFNAMSIZ]; 1278 u_int8_t pf_chksum[PF_MD5_DIGEST_LENGTH]; 1279 }; 1280 1281 #define PF_REASS_ENABLED 0x01 1282 #define PF_REASS_NODF 0x02 1283 1284 struct cbq_opts { 1285 u_int minburst; 1286 u_int maxburst; 1287 u_int pktsize; 1288 u_int maxpktsize; 1289 u_int ns_per_byte; 1290 u_int maxidle; 1291 int minidle; 1292 u_int offtime; 1293 int flags; 1294 }; 1295 1296 struct priq_opts { 1297 int flags; 1298 }; 1299 1300 struct hfsc_opts { 1301 /* real-time service curve */ 1302 u_int rtsc_m1; /* slope of the 1st segment in bps */ 1303 u_int rtsc_d; /* the x-projection of m1 in msec */ 1304 u_int rtsc_m2; /* slope of the 2nd segment in bps */ 1305 /* link-sharing service curve */ 1306 u_int lssc_m1; 1307 u_int lssc_d; 1308 u_int lssc_m2; 1309 /* upper-limit service curve */ 1310 u_int ulsc_m1; 1311 u_int ulsc_d; 1312 u_int ulsc_m2; 1313 int flags; 1314 }; 1315 1316 struct pf_altq { 1317 char ifname[IFNAMSIZ]; 1318 1319 void *altq_disc; /* discipline-specific state */ 1320 TAILQ_ENTRY(pf_altq) entries; 1321 1322 /* scheduler spec */ 1323 u_int8_t scheduler; /* scheduler type */ 1324 u_int16_t tbrsize; /* tokenbucket regulator size */ 1325 u_int32_t ifbandwidth; /* interface bandwidth */ 1326 1327 /* queue spec */ 1328 char qname[PF_QNAME_SIZE]; /* queue name */ 1329 char parent[PF_QNAME_SIZE]; /* parent name */ 1330 u_int32_t parent_qid; /* parent queue id */ 1331 u_int32_t bandwidth; /* queue bandwidth */ 1332 u_int8_t priority; /* priority */ 1333 u_int16_t qlimit; /* queue size limit */ 1334 u_int16_t flags; /* misc flags */ 1335 union { 1336 struct cbq_opts cbq_opts; 1337 struct priq_opts priq_opts; 1338 struct hfsc_opts hfsc_opts; 1339 } pq_u; 1340 1341 u_int32_t qid; /* return value */ 1342 }; 1343 1344 struct pf_tagname { 1345 TAILQ_ENTRY(pf_tagname) entries; 1346 char name[PF_TAG_NAME_SIZE]; 1347 u_int16_t tag; 1348 int ref; 1349 }; 1350 1351 struct pf_divert { 1352 union { 1353 struct in_addr ipv4; 1354 struct in6_addr ipv6; 1355 } addr; 1356 u_int16_t port; 1357 }; 1358 1359 #define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */ 1360 #define PFFRAG_FRAG_HIWAT 1000 /* Number of fragmented packets */ 1361 #define PFFRAG_FRCENT_HIWAT 50000 /* Number of fragment cache entries */ 1362 #define PFFRAG_FRCACHE_HIWAT 10000 /* Number of fragment descriptors */ 1363 1364 #define PFR_KTABLE_HIWAT 1000 /* Number of tables */ 1365 #define PFR_KENTRY_HIWAT 200000 /* Number of table entries */ 1366 #define PFR_KENTRY_HIWAT_SMALL 100000 /* Number of table entries (tiny hosts) */ 1367 1368 /* 1369 * ioctl parameter structures 1370 */ 1371 1372 struct pfioc_pooladdr { 1373 u_int32_t action; 1374 u_int32_t ticket; 1375 u_int32_t nr; 1376 u_int32_t r_num; 1377 u_int8_t r_action; 1378 u_int8_t r_last; 1379 u_int8_t af; 1380 char anchor[MAXPATHLEN]; 1381 struct pf_pooladdr addr; 1382 }; 1383 1384 struct pfioc_rule { 1385 u_int32_t action; 1386 u_int32_t ticket; 1387 u_int32_t pool_ticket; 1388 u_int32_t nr; 1389 char anchor[MAXPATHLEN]; 1390 char anchor_call[MAXPATHLEN]; 1391 struct pf_rule rule; 1392 }; 1393 1394 struct pfioc_natlook { 1395 struct pf_addr saddr; 1396 struct pf_addr daddr; 1397 struct pf_addr rsaddr; 1398 struct pf_addr rdaddr; 1399 u_int16_t sport; 1400 u_int16_t dport; 1401 u_int16_t rsport; 1402 u_int16_t rdport; 1403 sa_family_t af; 1404 u_int8_t proto; 1405 u_int8_t direction; 1406 }; 1407 1408 struct pfioc_state { 1409 struct pfsync_state state; 1410 }; 1411 1412 struct pfioc_src_node_kill { 1413 sa_family_t psnk_af; 1414 struct pf_rule_addr psnk_src; 1415 struct pf_rule_addr psnk_dst; 1416 u_int psnk_killed; 1417 }; 1418 1419 struct pfioc_state_kill { 1420 struct pf_state_cmp psk_pfcmp; 1421 sa_family_t psk_af; 1422 int psk_proto; 1423 struct pf_rule_addr psk_src; 1424 struct pf_rule_addr psk_dst; 1425 char psk_ifname[IFNAMSIZ]; 1426 char psk_label[PF_RULE_LABEL_SIZE]; 1427 u_int psk_killed; 1428 }; 1429 1430 struct pfioc_states { 1431 int ps_len; 1432 union { 1433 caddr_t psu_buf; 1434 struct pfsync_state *psu_states; 1435 } ps_u; 1436 #define ps_buf ps_u.psu_buf 1437 #define ps_states ps_u.psu_states 1438 }; 1439 1440 struct pfioc_src_nodes { 1441 int psn_len; 1442 union { 1443 caddr_t psu_buf; 1444 struct pf_src_node *psu_src_nodes; 1445 } psn_u; 1446 #define psn_buf psn_u.psu_buf 1447 #define psn_src_nodes psn_u.psu_src_nodes 1448 }; 1449 1450 struct pfioc_if { 1451 char ifname[IFNAMSIZ]; 1452 }; 1453 1454 struct pfioc_tm { 1455 int timeout; 1456 int seconds; 1457 }; 1458 1459 struct pfioc_limit { 1460 int index; 1461 unsigned limit; 1462 }; 1463 1464 struct pfioc_altq { 1465 u_int32_t action; 1466 u_int32_t ticket; 1467 u_int32_t nr; 1468 struct pf_altq altq; 1469 }; 1470 1471 struct pfioc_qstats { 1472 u_int32_t ticket; 1473 u_int32_t nr; 1474 void *buf; 1475 int nbytes; 1476 u_int8_t scheduler; 1477 }; 1478 1479 struct pfioc_ruleset { 1480 u_int32_t nr; 1481 char path[MAXPATHLEN]; 1482 char name[PF_ANCHOR_NAME_SIZE]; 1483 }; 1484 1485 #define PF_RULESET_ALTQ (PF_RULESET_MAX) 1486 #define PF_RULESET_TABLE (PF_RULESET_MAX+1) 1487 struct pfioc_trans { 1488 int size; /* number of elements */ 1489 int esize; /* size of each element in bytes */ 1490 struct pfioc_trans_e { 1491 int rs_num; 1492 char anchor[MAXPATHLEN]; 1493 u_int32_t ticket; 1494 } *array; 1495 }; 1496 1497 #define PFR_FLAG_ATOMIC 0x00000001 1498 #define PFR_FLAG_DUMMY 0x00000002 1499 #define PFR_FLAG_FEEDBACK 0x00000004 1500 #define PFR_FLAG_CLSTATS 0x00000008 1501 #define PFR_FLAG_ADDRSTOO 0x00000010 1502 #define PFR_FLAG_REPLACE 0x00000020 1503 #define PFR_FLAG_ALLRSETS 0x00000040 1504 #define PFR_FLAG_ALLMASK 0x0000007F 1505 #ifdef _KERNEL 1506 #define PFR_FLAG_USERIOCTL 0x10000000 1507 #endif 1508 1509 struct pfioc_table { 1510 struct pfr_table pfrio_table; 1511 void *pfrio_buffer; 1512 int pfrio_esize; 1513 int pfrio_size; 1514 int pfrio_size2; 1515 int pfrio_nadd; 1516 int pfrio_ndel; 1517 int pfrio_nchange; 1518 int pfrio_flags; 1519 u_int32_t pfrio_ticket; 1520 }; 1521 #define pfrio_exists pfrio_nadd 1522 #define pfrio_nzero pfrio_nadd 1523 #define pfrio_nmatch pfrio_nadd 1524 #define pfrio_naddr pfrio_size2 1525 #define pfrio_setflag pfrio_size2 1526 #define pfrio_clrflag pfrio_nadd 1527 1528 struct pfioc_iface { 1529 char pfiio_name[IFNAMSIZ]; 1530 void *pfiio_buffer; 1531 int pfiio_esize; 1532 int pfiio_size; 1533 int pfiio_nzero; 1534 int pfiio_flags; 1535 }; 1536 1537 1538 /* 1539 * ioctl operations 1540 */ 1541 1542 #define DIOCSTART _IO ('D', 1) 1543 #define DIOCSTOP _IO ('D', 2) 1544 #define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule) 1545 #define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule) 1546 #define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule) 1547 /* XXX cut 8 - 17 */ 1548 #define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill) 1549 #define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state) 1550 #define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if) 1551 #define DIOCGETSTATUS _IOWR('D', 21, struct pf_status) 1552 #define DIOCCLRSTATUS _IO ('D', 22) 1553 #define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook) 1554 #define DIOCSETDEBUG _IOWR('D', 24, u_int32_t) 1555 #define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states) 1556 #define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule) 1557 /* XXX cut 26 - 28 */ 1558 #define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm) 1559 #define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm) 1560 #define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state) 1561 #define DIOCCLRRULECTRS _IO ('D', 38) 1562 #define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit) 1563 #define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit) 1564 #define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill) 1565 #define DIOCSTARTALTQ _IO ('D', 42) 1566 #define DIOCSTOPALTQ _IO ('D', 43) 1567 #define DIOCADDALTQ _IOWR('D', 45, struct pfioc_altq) 1568 #define DIOCGETALTQS _IOWR('D', 47, struct pfioc_altq) 1569 #define DIOCGETALTQ _IOWR('D', 48, struct pfioc_altq) 1570 #define DIOCCHANGEALTQ _IOWR('D', 49, struct pfioc_altq) 1571 #define DIOCGETQSTATS _IOWR('D', 50, struct pfioc_qstats) 1572 #define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr) 1573 #define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr) 1574 #define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr) 1575 #define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr) 1576 #define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr) 1577 /* XXX cut 55 - 57 */ 1578 #define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset) 1579 #define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset) 1580 #define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table) 1581 #define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table) 1582 #define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table) 1583 #define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table) 1584 #define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table) 1585 #define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table) 1586 #define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table) 1587 #define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table) 1588 #define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table) 1589 #define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table) 1590 #define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table) 1591 #define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table) 1592 #define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table) 1593 #define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table) 1594 #define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table) 1595 #define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table) 1596 #define DIOCOSFPFLUSH _IO('D', 78) 1597 #define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl) 1598 #define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl) 1599 #define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans) 1600 #define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans) 1601 #define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans) 1602 #define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes) 1603 #define DIOCCLRSRCNODES _IO('D', 85) 1604 #define DIOCSETHOSTID _IOWR('D', 86, u_int32_t) 1605 #define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface) 1606 #define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface) 1607 #define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface) 1608 #define DIOCKILLSRCNODES _IOWR('D', 91, struct pfioc_src_node_kill) 1609 #define DIOCSETREASS _IOWR('D', 92, u_int32_t) 1610 1611 #ifdef _KERNEL 1612 RB_HEAD(pf_src_tree, pf_src_node); 1613 RB_PROTOTYPE(pf_src_tree, pf_src_node, entry, pf_src_compare); 1614 extern struct pf_src_tree tree_src_tracking; 1615 1616 RB_HEAD(pf_state_tree_id, pf_state); 1617 RB_PROTOTYPE(pf_state_tree_id, pf_state, 1618 entry_id, pf_state_compare_id); 1619 extern struct pf_state_tree_id tree_id; 1620 extern struct pf_state_queue state_list; 1621 1622 TAILQ_HEAD(pf_poolqueue, pf_pool); 1623 extern struct pf_poolqueue pf_pools[2]; 1624 TAILQ_HEAD(pf_altqqueue, pf_altq); 1625 extern struct pf_altqqueue pf_altqs[2]; 1626 extern struct pf_palist pf_pabuf; 1627 1628 extern u_int32_t ticket_altqs_active; 1629 extern u_int32_t ticket_altqs_inactive; 1630 extern int altqs_inactive_open; 1631 extern u_int32_t ticket_pabuf; 1632 extern struct pf_altqqueue *pf_altqs_active; 1633 extern struct pf_altqqueue *pf_altqs_inactive; 1634 extern struct pf_poolqueue *pf_pools_active; 1635 extern struct pf_poolqueue *pf_pools_inactive; 1636 extern int pf_tbladdr_setup(struct pf_ruleset *, 1637 struct pf_addr_wrap *); 1638 extern void pf_tbladdr_remove(struct pf_addr_wrap *); 1639 extern void pf_tbladdr_copyout(struct pf_addr_wrap *); 1640 extern void pf_calc_skip_steps(struct pf_rulequeue *); 1641 extern struct pool pf_src_tree_pl, pf_rule_pl; 1642 extern struct pool pf_state_pl, pf_state_key_pl, pf_state_item_pl, 1643 pf_altq_pl, pf_pooladdr_pl, pf_rule_item_pl; 1644 extern struct pool pf_state_scrub_pl; 1645 extern void pf_purge_thread(void *); 1646 extern void pf_purge_expired_src_nodes(int); 1647 extern void pf_purge_expired_states(u_int32_t); 1648 extern void pf_unlink_state(struct pf_state *); 1649 extern void pf_free_state(struct pf_state *); 1650 extern int pf_state_insert(struct pfi_kif *, 1651 struct pf_state_key *, 1652 struct pf_state_key *, 1653 struct pf_state *); 1654 extern int pf_insert_src_node(struct pf_src_node **, 1655 struct pf_rule *, struct pf_addr *, 1656 sa_family_t); 1657 void pf_src_tree_remove_state(struct pf_state *); 1658 extern struct pf_state *pf_find_state_byid(struct pf_state_cmp *); 1659 extern struct pf_state *pf_find_state_all(struct pf_state_key_cmp *, 1660 u_int, int *); 1661 extern void pf_print_state(struct pf_state *); 1662 extern void pf_print_flags(u_int8_t); 1663 extern u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t, 1664 u_int8_t); 1665 1666 extern struct ifnet *sync_ifp; 1667 extern struct pf_rule pf_default_rule; 1668 extern void pf_addrcpy(struct pf_addr *, struct pf_addr *, 1669 u_int8_t); 1670 void pf_rm_rule(struct pf_rulequeue *, 1671 struct pf_rule *); 1672 struct pf_divert *pf_find_divert(struct mbuf *); 1673 1674 #ifdef INET 1675 int pf_test(int, struct ifnet *, struct mbuf **, struct ether_header *); 1676 #endif /* INET */ 1677 1678 #ifdef INET6 1679 int pf_test6(int, struct ifnet *, struct mbuf **, struct ether_header *); 1680 void pf_poolmask(struct pf_addr *, struct pf_addr*, 1681 struct pf_addr *, struct pf_addr *, u_int8_t); 1682 void pf_addr_inc(struct pf_addr *, sa_family_t); 1683 #endif /* INET6 */ 1684 1685 void *pf_pull_hdr(struct mbuf *, int, void *, int, u_short *, u_short *, 1686 sa_family_t); 1687 void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t); 1688 int pflog_packet(struct pfi_kif *, struct mbuf *, sa_family_t, u_int8_t, 1689 u_int8_t, struct pf_rule *, struct pf_rule *, struct pf_ruleset *, 1690 struct pf_pdesc *); 1691 void pf_send_deferred_syn(struct pf_state *); 1692 int pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *, 1693 struct pf_addr *, sa_family_t); 1694 int pf_match_addr_range(struct pf_addr *, struct pf_addr *, 1695 struct pf_addr *, sa_family_t); 1696 int pf_match(u_int8_t, u_int32_t, u_int32_t, u_int32_t); 1697 int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t); 1698 int pf_match_uid(u_int8_t, uid_t, uid_t, uid_t); 1699 int pf_match_gid(u_int8_t, gid_t, gid_t, gid_t); 1700 1701 void pf_normalize_init(void); 1702 int pf_normalize_ip(struct mbuf **, int, struct pfi_kif *, u_short *, 1703 struct pf_pdesc *); 1704 int pf_normalize_ip6(struct mbuf **, int, struct pfi_kif *, u_short *, 1705 struct pf_pdesc *); 1706 int pf_normalize_tcp(int, struct pfi_kif *, struct mbuf *, int, int, void *, 1707 struct pf_pdesc *); 1708 void pf_normalize_tcp_cleanup(struct pf_state *); 1709 int pf_normalize_tcp_init(struct mbuf *, int, struct pf_pdesc *, 1710 struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *); 1711 int pf_normalize_tcp_stateful(struct mbuf *, int, struct pf_pdesc *, 1712 u_short *, struct tcphdr *, struct pf_state *, 1713 struct pf_state_peer *, struct pf_state_peer *, int *); 1714 int pf_normalize_mss(struct mbuf *, int, struct pf_pdesc *, u_int16_t); 1715 void pf_scrub_ip(struct mbuf **, u_int8_t, u_int8_t, u_int8_t); 1716 void pf_scrub_ip6(struct mbuf **, u_int8_t); 1717 u_int32_t 1718 pf_state_expires(const struct pf_state *); 1719 void pf_purge_expired_fragments(void); 1720 int pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kif *); 1721 int pf_rtlabel_match(struct pf_addr *, sa_family_t, struct pf_addr_wrap *); 1722 int pf_socket_lookup(int, struct pf_pdesc *); 1723 struct pf_state_key *pf_alloc_state_key(int); 1724 void pf_pkt_addr_changed(struct mbuf *); 1725 int pf_state_key_attach(struct pf_state_key *, struct pf_state *, int); 1726 void pfr_initialize(void); 1727 int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t); 1728 void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t, 1729 u_int64_t, int, int, int); 1730 int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, 1731 struct pf_addr **, struct pf_addr **, sa_family_t); 1732 void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *); 1733 struct pfr_ktable * 1734 pfr_attach_table(struct pf_ruleset *, char *, int); 1735 void pfr_detach_table(struct pfr_ktable *); 1736 int pfr_clr_tables(struct pfr_table *, int *, int); 1737 int pfr_add_tables(struct pfr_table *, int, int *, int); 1738 int pfr_del_tables(struct pfr_table *, int, int *, int); 1739 int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int); 1740 int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int); 1741 int pfr_clr_tstats(struct pfr_table *, int, int *, int); 1742 int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int); 1743 int pfr_clr_addrs(struct pfr_table *, int *, int); 1744 int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *, long); 1745 int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1746 int); 1747 int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1748 int); 1749 int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1750 int *, int *, int *, int, u_int32_t); 1751 int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int); 1752 int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int); 1753 int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *, 1754 int); 1755 int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1756 int); 1757 int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int); 1758 int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int); 1759 int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int); 1760 int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *, 1761 int *, u_int32_t, int); 1762 1763 extern struct pfi_kif *pfi_all; 1764 1765 void pfi_initialize(void); 1766 struct pfi_kif *pfi_kif_get(const char *); 1767 void pfi_kif_ref(struct pfi_kif *, enum pfi_kif_refs); 1768 void pfi_kif_unref(struct pfi_kif *, enum pfi_kif_refs); 1769 int pfi_kif_match(struct pfi_kif *, struct pfi_kif *); 1770 void pfi_attach_ifnet(struct ifnet *); 1771 void pfi_detach_ifnet(struct ifnet *); 1772 void pfi_attach_ifgroup(struct ifg_group *); 1773 void pfi_detach_ifgroup(struct ifg_group *); 1774 void pfi_group_change(const char *); 1775 int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *, 1776 sa_family_t); 1777 int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t); 1778 void pfi_dynaddr_remove(struct pf_addr_wrap *); 1779 void pfi_dynaddr_copyout(struct pf_addr_wrap *); 1780 void pfi_update_status(const char *, struct pf_status *); 1781 int pfi_get_ifaces(const char *, struct pfi_kif *, int *); 1782 int pfi_set_flags(const char *, int); 1783 int pfi_clear_flags(const char *, int); 1784 void pfi_xcommit(void); 1785 1786 int pf_match_tag(struct mbuf *, struct pf_rule *, int *); 1787 u_int16_t pf_tagname2tag(char *); 1788 void pf_tag2tagname(u_int16_t, char *); 1789 void pf_tag_ref(u_int16_t); 1790 void pf_tag_unref(u_int16_t); 1791 int pf_tag_packet(struct mbuf *, int, int); 1792 u_int32_t pf_qname2qid(char *); 1793 void pf_qid2qname(u_int32_t, char *); 1794 void pf_qid_unref(u_int32_t); 1795 1796 extern struct pf_status pf_status; 1797 extern struct pool pf_frent_pl, pf_frag_pl; 1798 extern struct rwlock pf_consistency_lock; 1799 1800 struct pf_pool_limit { 1801 void *pp; 1802 unsigned limit; 1803 unsigned limit_new; 1804 }; 1805 extern struct pf_pool_limit pf_pool_limits[PF_LIMIT_MAX]; 1806 1807 #endif /* _KERNEL */ 1808 1809 extern struct pf_anchor_global pf_anchors; 1810 extern struct pf_anchor pf_main_anchor; 1811 #define pf_main_ruleset pf_main_anchor.ruleset 1812 1813 /* these ruleset functions can be linked into userland programs (pfctl) */ 1814 int pf_get_ruleset_number(u_int8_t); 1815 void pf_init_ruleset(struct pf_ruleset *); 1816 int pf_anchor_setup(struct pf_rule *, 1817 const struct pf_ruleset *, const char *); 1818 int pf_anchor_copyout(const struct pf_ruleset *, 1819 const struct pf_rule *, struct pfioc_rule *); 1820 void pf_anchor_remove(struct pf_rule *); 1821 void pf_remove_if_empty_ruleset(struct pf_ruleset *); 1822 struct pf_anchor *pf_find_anchor(const char *); 1823 struct pf_ruleset *pf_find_ruleset(const char *); 1824 struct pf_ruleset *pf_find_or_create_ruleset(const char *); 1825 void pf_rs_initialize(void); 1826 1827 #ifdef _KERNEL 1828 int pf_anchor_copyout(const struct pf_ruleset *, 1829 const struct pf_rule *, struct pfioc_rule *); 1830 void pf_anchor_remove(struct pf_rule *); 1831 1832 #endif /* _KERNEL */ 1833 1834 /* The fingerprint functions can be linked into userland programs (tcpdump) */ 1835 int pf_osfp_add(struct pf_osfp_ioctl *); 1836 #ifdef _KERNEL 1837 struct pf_osfp_enlist * 1838 pf_osfp_fingerprint(struct pf_pdesc *, struct mbuf *, int, 1839 const struct tcphdr *); 1840 #endif /* _KERNEL */ 1841 struct pf_osfp_enlist * 1842 pf_osfp_fingerprint_hdr(const struct ip *, const struct ip6_hdr *, 1843 const struct tcphdr *); 1844 void pf_osfp_flush(void); 1845 int pf_osfp_get(struct pf_osfp_ioctl *); 1846 void pf_osfp_initialize(void); 1847 int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t); 1848 struct pf_os_fingerprint * 1849 pf_osfp_validate(void); 1850 1851 #ifdef _KERNEL 1852 void pf_print_host(struct pf_addr *, u_int16_t, u_int8_t); 1853 1854 void pf_step_into_anchor(int *, struct pf_ruleset **, int, 1855 struct pf_rule **, struct pf_rule **, int *); 1856 int pf_step_out_of_anchor(int *, struct pf_ruleset **, 1857 int, struct pf_rule **, struct pf_rule **, 1858 int *); 1859 1860 int pf_map_addr(u_int8_t, struct pf_rule *, 1861 struct pf_addr *, struct pf_addr *, 1862 struct pf_addr *, struct pf_src_node **); 1863 struct pf_rule *pf_get_translation(struct pf_pdesc *, struct mbuf *, 1864 int, int, struct pfi_kif *, struct pf_src_node **, 1865 struct pf_state_key **, struct pf_state_key **, 1866 struct pf_state_key **, struct pf_state_key **, 1867 struct pf_addr *, struct pf_addr *, 1868 u_int16_t, u_int16_t); 1869 1870 int pf_state_key_setup(struct pf_pdesc *, struct pf_rule *, 1871 struct pf_state_key **, struct pf_state_key **, 1872 struct pf_state_key **, struct pf_state_key **, 1873 struct pf_addr *, struct pf_addr *, 1874 u_int16_t, u_int16_t); 1875 #endif /* _KERNEL */ 1876 1877 1878 #endif /* _NET_PFVAR_H_ */ 1879