pfvar.h revision 1.1.1.4
1 /* $NetBSD: pfvar.h,v 1.1.1.4 2009/12/01 07:03:15 martti Exp $ */ 2 /* $OpenBSD: pfvar.h,v 1.254 2007/07/13 09:17:48 markus Exp $ */ 3 4 /* 5 * Copyright (c) 2001 Daniel Hartmeier 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 }; 62 enum { PF_LAN_EXT, PF_EXT_GWY, PF_ID }; 63 enum { PF_PASS, PF_DROP, PF_SCRUB, PF_NOSCRUB, PF_NAT, PF_NONAT, 64 PF_BINAT, PF_NOBINAT, PF_RDR, PF_NORDR, PF_SYNPROXY_DROP }; 65 enum { PF_RULESET_SCRUB, PF_RULESET_FILTER, PF_RULESET_NAT, 66 PF_RULESET_BINAT, PF_RULESET_RDR, PF_RULESET_MAX }; 67 enum { PF_OP_NONE, PF_OP_IRG, PF_OP_EQ, PF_OP_NE, PF_OP_LT, 68 PF_OP_LE, PF_OP_GT, PF_OP_GE, PF_OP_XRG, PF_OP_RRG }; 69 enum { PF_DEBUG_NONE, PF_DEBUG_URGENT, PF_DEBUG_MISC, PF_DEBUG_NOISY }; 70 enum { PF_CHANGE_NONE, PF_CHANGE_ADD_HEAD, PF_CHANGE_ADD_TAIL, 71 PF_CHANGE_ADD_BEFORE, PF_CHANGE_ADD_AFTER, 72 PF_CHANGE_REMOVE, PF_CHANGE_GET_TICKET }; 73 enum { PF_GET_NONE, PF_GET_CLR_CNTR }; 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 #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 125 126 struct pf_addr { 127 union { 128 struct in_addr v4; 129 struct in6_addr v6; 130 u_int8_t addr8[16]; 131 u_int16_t addr16[8]; 132 u_int32_t addr32[4]; 133 } pfa; /* 128-bit address */ 134 #define v4 pfa.v4 135 #define v6 pfa.v6 136 #define addr8 pfa.addr8 137 #define addr16 pfa.addr16 138 #define addr32 pfa.addr32 139 }; 140 141 #define PF_TABLE_NAME_SIZE 32 142 143 #define PFI_AFLAG_NETWORK 0x01 144 #define PFI_AFLAG_BROADCAST 0x02 145 #define PFI_AFLAG_PEER 0x04 146 #define PFI_AFLAG_MODEMASK 0x07 147 #define PFI_AFLAG_NOALIAS 0x08 148 149 struct pf_addr_wrap { 150 union { 151 struct { 152 struct pf_addr addr; 153 struct pf_addr mask; 154 } a; 155 char ifname[IFNAMSIZ]; 156 char tblname[PF_TABLE_NAME_SIZE]; 157 char rtlabelname[RTLABEL_LEN]; 158 u_int32_t rtlabel; 159 } v; 160 union { 161 struct pfi_dynaddr *dyn; 162 struct pfr_ktable *tbl; 163 int dyncnt; 164 int tblcnt; 165 } p; 166 u_int8_t type; /* PF_ADDR_* */ 167 u_int8_t iflags; /* PFI_AFLAG_* */ 168 }; 169 170 #ifdef _KERNEL 171 172 struct pfi_dynaddr { 173 TAILQ_ENTRY(pfi_dynaddr) entry; 174 struct pf_addr pfid_addr4; 175 struct pf_addr pfid_mask4; 176 struct pf_addr pfid_addr6; 177 struct pf_addr pfid_mask6; 178 struct pfr_ktable *pfid_kt; 179 struct pfi_kif *pfid_kif; 180 void *pfid_hook_cookie; 181 int pfid_net; /* mask or 128 */ 182 int pfid_acnt4; /* address count IPv4 */ 183 int pfid_acnt6; /* address count IPv6 */ 184 sa_family_t pfid_af; /* rule af */ 185 u_int8_t pfid_iflags; /* PFI_AFLAG_* */ 186 }; 187 188 /* 189 * Address manipulation macros 190 */ 191 192 #ifdef INET 193 #ifndef INET6 194 #define PF_INET_ONLY 195 #endif /* ! INET6 */ 196 #endif /* INET */ 197 198 #ifdef INET6 199 #ifndef INET 200 #define PF_INET6_ONLY 201 #endif /* ! INET */ 202 #endif /* INET6 */ 203 204 #ifdef INET 205 #ifdef INET6 206 #define PF_INET_INET6 207 #endif /* INET6 */ 208 #endif /* INET */ 209 210 #else 211 212 #define PF_INET_INET6 213 214 #endif /* _KERNEL */ 215 216 /* Both IPv4 and IPv6 */ 217 #ifdef PF_INET_INET6 218 219 #define PF_AEQ(a, b, c) \ 220 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \ 221 ((a)->addr32[3] == (b)->addr32[3] && \ 222 (a)->addr32[2] == (b)->addr32[2] && \ 223 (a)->addr32[1] == (b)->addr32[1] && \ 224 (a)->addr32[0] == (b)->addr32[0])) \ 225 226 #define PF_ANEQ(a, b, c) \ 227 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \ 228 ((a)->addr32[3] != (b)->addr32[3] || \ 229 (a)->addr32[2] != (b)->addr32[2] || \ 230 (a)->addr32[1] != (b)->addr32[1] || \ 231 (a)->addr32[0] != (b)->addr32[0])) \ 232 233 #define PF_AZERO(a, c) \ 234 ((c == AF_INET && !(a)->addr32[0]) || \ 235 (!(a)->addr32[0] && !(a)->addr32[1] && \ 236 !(a)->addr32[2] && !(a)->addr32[3] )) \ 237 238 #define PF_MATCHA(n, a, m, b, f) \ 239 pf_match_addr(n, a, m, b, f) 240 241 #define PF_ACPY(a, b, f) \ 242 pf_addrcpy(a, b, f) 243 244 #define PF_AINC(a, f) \ 245 pf_addr_inc(a, f) 246 247 #define PF_POOLMASK(a, b, c, d, f) \ 248 pf_poolmask(a, b, c, d, f) 249 250 #else 251 252 /* Just IPv6 */ 253 254 #ifdef PF_INET6_ONLY 255 256 #define PF_AEQ(a, b, c) \ 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 ((a)->addr32[3] != (b)->addr32[3] || \ 264 (a)->addr32[2] != (b)->addr32[2] || \ 265 (a)->addr32[1] != (b)->addr32[1] || \ 266 (a)->addr32[0] != (b)->addr32[0]) \ 267 268 #define PF_AZERO(a, c) \ 269 (!(a)->addr32[0] && \ 270 !(a)->addr32[1] && \ 271 !(a)->addr32[2] && \ 272 !(a)->addr32[3] ) \ 273 274 #define PF_MATCHA(n, a, m, b, f) \ 275 pf_match_addr(n, a, m, b, f) 276 277 #define PF_ACPY(a, b, f) \ 278 pf_addrcpy(a, b, f) 279 280 #define PF_AINC(a, f) \ 281 pf_addr_inc(a, f) 282 283 #define PF_POOLMASK(a, b, c, d, f) \ 284 pf_poolmask(a, b, c, d, f) 285 286 #else 287 288 /* Just IPv4 */ 289 #ifdef PF_INET_ONLY 290 291 #define PF_AEQ(a, b, c) \ 292 ((a)->addr32[0] == (b)->addr32[0]) 293 294 #define PF_ANEQ(a, b, c) \ 295 ((a)->addr32[0] != (b)->addr32[0]) 296 297 #define PF_AZERO(a, c) \ 298 (!(a)->addr32[0]) 299 300 #define PF_MATCHA(n, a, m, b, f) \ 301 pf_match_addr(n, a, m, b, f) 302 303 #define PF_ACPY(a, b, f) \ 304 (a)->v4.s_addr = (b)->v4.s_addr 305 306 #define PF_AINC(a, f) \ 307 do { \ 308 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \ 309 } while (0) 310 311 #define PF_POOLMASK(a, b, c, d, f) \ 312 do { \ 313 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \ 314 (((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \ 315 } while (0) 316 317 #endif /* PF_INET_ONLY */ 318 #endif /* PF_INET6_ONLY */ 319 #endif /* PF_INET_INET6 */ 320 321 #define PF_MISMATCHAW(aw, x, af, neg, ifp) \ 322 ( \ 323 (((aw)->type == PF_ADDR_NOROUTE && \ 324 pf_routable((x), (af), NULL)) || \ 325 (((aw)->type == PF_ADDR_URPFFAILED && (ifp) != NULL && \ 326 pf_routable((x), (af), (ifp))) || \ 327 ((aw)->type == PF_ADDR_RTLABEL && \ 328 !pf_rtlabel_match((x), (af), (aw))) || \ 329 ((aw)->type == PF_ADDR_TABLE && \ 330 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \ 331 ((aw)->type == PF_ADDR_DYNIFTL && \ 332 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \ 333 ((aw)->type == PF_ADDR_ADDRMASK && \ 334 !PF_AZERO(&(aw)->v.a.mask, (af)) && \ 335 !PF_MATCHA(0, &(aw)->v.a.addr, \ 336 &(aw)->v.a.mask, (x), (af))))) != \ 337 (neg) \ 338 ) 339 340 341 struct pf_rule_uid { 342 uid_t uid[2]; 343 u_int8_t op; 344 }; 345 346 struct pf_rule_gid { 347 uid_t gid[2]; 348 u_int8_t op; 349 }; 350 351 struct pf_rule_addr { 352 struct pf_addr_wrap addr; 353 u_int16_t port[2]; 354 u_int8_t neg; 355 u_int8_t port_op; 356 }; 357 358 struct pf_pooladdr { 359 struct pf_addr_wrap addr; 360 TAILQ_ENTRY(pf_pooladdr) entries; 361 char ifname[IFNAMSIZ]; 362 struct pfi_kif *kif; 363 }; 364 365 TAILQ_HEAD(pf_palist, pf_pooladdr); 366 367 struct pf_poolhashkey { 368 union { 369 u_int8_t key8[16]; 370 u_int16_t key16[8]; 371 u_int32_t key32[4]; 372 } pfk; /* 128-bit hash key */ 373 #define key8 pfk.key8 374 #define key16 pfk.key16 375 #define key32 pfk.key32 376 }; 377 378 struct pf_pool { 379 struct pf_palist list; 380 struct pf_pooladdr *cur; 381 struct pf_poolhashkey key; 382 struct pf_addr counter; 383 int tblidx; 384 u_int16_t proxy_port[2]; 385 u_int8_t port_op; 386 u_int8_t opts; 387 }; 388 389 390 /* A packed Operating System description for fingerprinting */ 391 typedef u_int32_t pf_osfp_t; 392 #define PF_OSFP_ANY ((pf_osfp_t)0) 393 #define PF_OSFP_UNKNOWN ((pf_osfp_t)-1) 394 #define PF_OSFP_NOMATCH ((pf_osfp_t)-2) 395 396 struct pf_osfp_entry { 397 SLIST_ENTRY(pf_osfp_entry) fp_entry; 398 pf_osfp_t fp_os; 399 int fp_enflags; 400 #define PF_OSFP_EXPANDED 0x001 /* expanded entry */ 401 #define PF_OSFP_GENERIC 0x002 /* generic signature */ 402 #define PF_OSFP_NODETAIL 0x004 /* no p0f details */ 403 #define PF_OSFP_LEN 32 404 char fp_class_nm[PF_OSFP_LEN]; 405 char fp_version_nm[PF_OSFP_LEN]; 406 char fp_subtype_nm[PF_OSFP_LEN]; 407 }; 408 #define PF_OSFP_ENTRY_EQ(a, b) \ 409 ((a)->fp_os == (b)->fp_os && \ 410 memcmp((a)->fp_class_nm, (b)->fp_class_nm, PF_OSFP_LEN) == 0 && \ 411 memcmp((a)->fp_version_nm, (b)->fp_version_nm, PF_OSFP_LEN) == 0 && \ 412 memcmp((a)->fp_subtype_nm, (b)->fp_subtype_nm, PF_OSFP_LEN) == 0) 413 414 /* handle pf_osfp_t packing */ 415 #define _FP_RESERVED_BIT 1 /* For the special negative #defines */ 416 #define _FP_UNUSED_BITS 1 417 #define _FP_CLASS_BITS 10 /* OS Class (Windows, Linux) */ 418 #define _FP_VERSION_BITS 10 /* OS version (95, 98, NT, 2.4.54, 3.2) */ 419 #define _FP_SUBTYPE_BITS 10 /* patch level (NT SP4, SP3, ECN patch) */ 420 #define PF_OSFP_UNPACK(osfp, class, version, subtype) do { \ 421 (class) = ((osfp) >> (_FP_VERSION_BITS+_FP_SUBTYPE_BITS)) & \ 422 ((1 << _FP_CLASS_BITS) - 1); \ 423 (version) = ((osfp) >> _FP_SUBTYPE_BITS) & \ 424 ((1 << _FP_VERSION_BITS) - 1);\ 425 (subtype) = (osfp) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 426 } while(0) 427 #define PF_OSFP_PACK(osfp, class, version, subtype) do { \ 428 (osfp) = ((class) & ((1 << _FP_CLASS_BITS) - 1)) << (_FP_VERSION_BITS \ 429 + _FP_SUBTYPE_BITS); \ 430 (osfp) |= ((version) & ((1 << _FP_VERSION_BITS) - 1)) << \ 431 _FP_SUBTYPE_BITS; \ 432 (osfp) |= (subtype) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 433 } while(0) 434 435 /* the fingerprint of an OSes TCP SYN packet */ 436 typedef u_int64_t pf_tcpopts_t; 437 struct pf_os_fingerprint { 438 SLIST_HEAD(pf_osfp_enlist, pf_osfp_entry) fp_oses; /* list of matches */ 439 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 440 u_int16_t fp_wsize; /* TCP window size */ 441 u_int16_t fp_psize; /* ip->ip_len */ 442 u_int16_t fp_mss; /* TCP MSS */ 443 u_int16_t fp_flags; 444 #define PF_OSFP_WSIZE_MOD 0x0001 /* Window modulus */ 445 #define PF_OSFP_WSIZE_DC 0x0002 /* Window don't care */ 446 #define PF_OSFP_WSIZE_MSS 0x0004 /* Window multiple of MSS */ 447 #define PF_OSFP_WSIZE_MTU 0x0008 /* Window multiple of MTU */ 448 #define PF_OSFP_PSIZE_MOD 0x0010 /* packet size modulus */ 449 #define PF_OSFP_PSIZE_DC 0x0020 /* packet size don't care */ 450 #define PF_OSFP_WSCALE 0x0040 /* TCP window scaling */ 451 #define PF_OSFP_WSCALE_MOD 0x0080 /* TCP window scale modulus */ 452 #define PF_OSFP_WSCALE_DC 0x0100 /* TCP window scale dont-care */ 453 #define PF_OSFP_MSS 0x0200 /* TCP MSS */ 454 #define PF_OSFP_MSS_MOD 0x0400 /* TCP MSS modulus */ 455 #define PF_OSFP_MSS_DC 0x0800 /* TCP MSS dont-care */ 456 #define PF_OSFP_DF 0x1000 /* IPv4 don't fragment bit */ 457 #define PF_OSFP_TS0 0x2000 /* Zero timestamp */ 458 #define PF_OSFP_INET6 0x4000 /* IPv6 */ 459 u_int8_t fp_optcnt; /* TCP option count */ 460 u_int8_t fp_wscale; /* TCP window scaling */ 461 u_int8_t fp_ttl; /* IPv4 TTL */ 462 #define PF_OSFP_MAXTTL_OFFSET 40 463 /* TCP options packing */ 464 #define PF_OSFP_TCPOPT_NOP 0x0 /* TCP NOP option */ 465 #define PF_OSFP_TCPOPT_WSCALE 0x1 /* TCP window scaling option */ 466 #define PF_OSFP_TCPOPT_MSS 0x2 /* TCP max segment size opt */ 467 #define PF_OSFP_TCPOPT_SACK 0x3 /* TCP SACK OK option */ 468 #define PF_OSFP_TCPOPT_TS 0x4 /* TCP timestamp option */ 469 #define PF_OSFP_TCPOPT_BITS 3 /* bits used by each option */ 470 #define PF_OSFP_MAX_OPTS \ 471 (sizeof(((struct pf_os_fingerprint *)0)->fp_tcpopts) * 8) \ 472 / PF_OSFP_TCPOPT_BITS 473 474 SLIST_ENTRY(pf_os_fingerprint) fp_next; 475 }; 476 477 struct pf_osfp_ioctl { 478 struct pf_osfp_entry fp_os; 479 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 480 u_int16_t fp_wsize; /* TCP window size */ 481 u_int16_t fp_psize; /* ip->ip_len */ 482 u_int16_t fp_mss; /* TCP MSS */ 483 u_int16_t fp_flags; 484 u_int8_t fp_optcnt; /* TCP option count */ 485 u_int8_t fp_wscale; /* TCP window scaling */ 486 u_int8_t fp_ttl; /* IPv4 TTL */ 487 488 int fp_getnum; /* DIOCOSFPGET number */ 489 }; 490 491 492 union pf_rule_ptr { 493 struct pf_rule *ptr; 494 u_int32_t nr; 495 }; 496 497 #define PF_ANCHOR_NAME_SIZE 64 498 499 struct pf_rule { 500 struct pf_rule_addr src; 501 struct pf_rule_addr dst; 502 #define PF_SKIP_IFP 0 503 #define PF_SKIP_DIR 1 504 #define PF_SKIP_AF 2 505 #define PF_SKIP_PROTO 3 506 #define PF_SKIP_SRC_ADDR 4 507 #define PF_SKIP_SRC_PORT 5 508 #define PF_SKIP_DST_ADDR 6 509 #define PF_SKIP_DST_PORT 7 510 #define PF_SKIP_COUNT 8 511 union pf_rule_ptr skip[PF_SKIP_COUNT]; 512 #define PF_RULE_LABEL_SIZE 64 513 char label[PF_RULE_LABEL_SIZE]; 514 #define PF_QNAME_SIZE 64 515 char ifname[IFNAMSIZ]; 516 char qname[PF_QNAME_SIZE]; 517 char pqname[PF_QNAME_SIZE]; 518 #define PF_TAG_NAME_SIZE 64 519 char tagname[PF_TAG_NAME_SIZE]; 520 char match_tagname[PF_TAG_NAME_SIZE]; 521 522 char overload_tblname[PF_TABLE_NAME_SIZE]; 523 524 TAILQ_ENTRY(pf_rule) entries; 525 struct pf_pool rpool; 526 527 u_int64_t evaluations; 528 u_int64_t packets[2]; 529 u_int64_t bytes[2]; 530 531 struct pfi_kif *kif; 532 struct pf_anchor *anchor; 533 struct pfr_ktable *overload_tbl; 534 535 pf_osfp_t os_fingerprint; 536 537 int rtableid; 538 u_int32_t timeout[PFTM_MAX]; 539 u_int32_t states; 540 u_int32_t max_states; 541 u_int32_t src_nodes; 542 u_int32_t max_src_nodes; 543 u_int32_t max_src_states; 544 u_int32_t max_src_conn; 545 struct { 546 u_int32_t limit; 547 u_int32_t seconds; 548 } max_src_conn_rate; 549 u_int32_t qid; 550 u_int32_t pqid; 551 u_int32_t rt_listid; 552 u_int32_t nr; 553 u_int32_t prob; 554 uid_t cuid; 555 pid_t cpid; 556 557 u_int16_t return_icmp; 558 u_int16_t return_icmp6; 559 u_int16_t max_mss; 560 u_int16_t tag; 561 u_int16_t match_tag; 562 563 struct pf_rule_uid uid; 564 struct pf_rule_gid gid; 565 566 u_int32_t rule_flag; 567 u_int8_t action; 568 u_int8_t direction; 569 u_int8_t log; 570 u_int8_t logif; 571 u_int8_t quick; 572 u_int8_t ifnot; 573 u_int8_t match_tag_not; 574 u_int8_t natpass; 575 576 #define PF_STATE_NORMAL 0x1 577 #define PF_STATE_MODULATE 0x2 578 #define PF_STATE_SYNPROXY 0x3 579 u_int8_t keep_state; 580 sa_family_t af; 581 u_int8_t proto; 582 u_int8_t type; 583 u_int8_t code; 584 u_int8_t flags; 585 u_int8_t flagset; 586 u_int8_t min_ttl; 587 u_int8_t allow_opts; 588 u_int8_t rt; 589 u_int8_t return_ttl; 590 u_int8_t tos; 591 u_int8_t anchor_relative; 592 u_int8_t anchor_wildcard; 593 594 #define PF_FLUSH 0x01 595 #define PF_FLUSH_GLOBAL 0x02 596 u_int8_t flush; 597 }; 598 599 /* rule flags */ 600 #define PFRULE_DROP 0x0000 601 #define PFRULE_RETURNRST 0x0001 602 #define PFRULE_FRAGMENT 0x0002 603 #define PFRULE_RETURNICMP 0x0004 604 #define PFRULE_RETURN 0x0008 605 #define PFRULE_NOSYNC 0x0010 606 #define PFRULE_SRCTRACK 0x0020 /* track source states */ 607 #define PFRULE_RULESRCTRACK 0x0040 /* per rule */ 608 609 /* scrub flags */ 610 #define PFRULE_NODF 0x0100 611 #define PFRULE_FRAGCROP 0x0200 /* non-buffering frag cache */ 612 #define PFRULE_FRAGDROP 0x0400 /* drop funny fragments */ 613 #define PFRULE_RANDOMID 0x0800 614 #define PFRULE_REASSEMBLE_TCP 0x1000 615 616 /* rule flags again */ 617 #define PFRULE_IFBOUND 0x00010000 /* if-bound */ 618 619 #define PFSTATE_HIWAT 10000 /* default state table size */ 620 #define PFSTATE_ADAPT_START 6000 /* default adaptive timeout start */ 621 #define PFSTATE_ADAPT_END 12000 /* default adaptive timeout end */ 622 623 624 struct pf_threshold { 625 u_int32_t limit; 626 #define PF_THRESHOLD_MULT 1000 627 #define PF_THRESHOLD_MAX 0xffffffff / PF_THRESHOLD_MULT 628 u_int32_t seconds; 629 u_int32_t count; 630 u_int32_t last; 631 }; 632 633 struct pf_src_node { 634 RB_ENTRY(pf_src_node) entry; 635 struct pf_addr addr; 636 struct pf_addr raddr; 637 union pf_rule_ptr rule; 638 struct pfi_kif *kif; 639 u_int64_t bytes[2]; 640 u_int64_t packets[2]; 641 u_int32_t states; 642 u_int32_t conn; 643 struct pf_threshold conn_rate; 644 u_int32_t creation; 645 u_int32_t expire; 646 sa_family_t af; 647 u_int8_t ruletype; 648 }; 649 650 #define PFSNODE_HIWAT 10000 /* default source node table size */ 651 652 struct pf_state_scrub { 653 struct timeval pfss_last; /* time received last packet */ 654 u_int32_t pfss_tsecr; /* last echoed timestamp */ 655 u_int32_t pfss_tsval; /* largest timestamp */ 656 u_int32_t pfss_tsval0; /* original timestamp */ 657 u_int16_t pfss_flags; 658 #define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */ 659 #define PFSS_PAWS 0x0010 /* stricter PAWS checks */ 660 #define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */ 661 #define PFSS_DATA_TS 0x0040 /* timestamp on data packets */ 662 #define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */ 663 u_int8_t pfss_ttl; /* stashed TTL */ 664 u_int8_t pad; 665 u_int32_t pfss_ts_mod; /* timestamp modulation */ 666 }; 667 668 struct pf_state_host { 669 struct pf_addr addr; 670 u_int16_t port; 671 u_int16_t pad; 672 }; 673 674 struct pf_state_peer { 675 u_int32_t seqlo; /* Max sequence number sent */ 676 u_int32_t seqhi; /* Max the other end ACKd + win */ 677 u_int32_t seqdiff; /* Sequence number modulator */ 678 u_int16_t max_win; /* largest window (pre scaling) */ 679 u_int8_t state; /* active state level */ 680 u_int8_t wscale; /* window scaling factor */ 681 u_int16_t mss; /* Maximum segment size option */ 682 u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */ 683 struct pf_state_scrub *scrub; /* state is scrubbed */ 684 u_int8_t pad[3]; 685 }; 686 687 TAILQ_HEAD(pf_state_queue, pf_state); 688 689 /* keep synced with struct pf_state_key, used in RB_FIND */ 690 struct pf_state_key_cmp { 691 struct pf_state_host lan; 692 struct pf_state_host gwy; 693 struct pf_state_host ext; 694 sa_family_t af; 695 u_int8_t proto; 696 u_int8_t direction; 697 u_int8_t pad; 698 }; 699 700 TAILQ_HEAD(pf_statelist, pf_state); 701 702 struct pf_state_key { 703 struct pf_state_host lan; 704 struct pf_state_host gwy; 705 struct pf_state_host ext; 706 sa_family_t af; 707 u_int8_t proto; 708 u_int8_t direction; 709 u_int8_t pad; 710 711 RB_ENTRY(pf_state_key) entry_lan_ext; 712 RB_ENTRY(pf_state_key) entry_ext_gwy; 713 struct pf_statelist states; 714 u_short refcnt; /* same size as if_index */ 715 }; 716 717 718 /* keep synced with struct pf_state, used in RB_FIND */ 719 struct pf_state_cmp { 720 u_int64_t id; 721 u_int32_t creatorid; 722 u_int32_t pad; 723 }; 724 725 struct pf_state { 726 u_int64_t id; 727 u_int32_t creatorid; 728 u_int32_t pad; 729 730 TAILQ_ENTRY(pf_state) entry_list; 731 TAILQ_ENTRY(pf_state) next; 732 RB_ENTRY(pf_state) entry_id; 733 struct pf_state_peer src; 734 struct pf_state_peer dst; 735 union pf_rule_ptr rule; 736 union pf_rule_ptr anchor; 737 union pf_rule_ptr nat_rule; 738 struct pf_addr rt_addr; 739 struct pf_state_key *state_key; 740 struct pfi_kif *kif; 741 struct pfi_kif *rt_kif; 742 struct pf_src_node *src_node; 743 struct pf_src_node *nat_src_node; 744 u_int64_t packets[2]; 745 u_int64_t bytes[2]; 746 u_int32_t creation; 747 u_int32_t expire; 748 u_int32_t pfsync_time; 749 u_int16_t tag; 750 u_int8_t log; 751 u_int8_t allow_opts; 752 u_int8_t timeout; 753 u_int8_t sync_flags; 754 #define PFSTATE_NOSYNC 0x01 755 #define PFSTATE_FROMSYNC 0x02 756 #define PFSTATE_STALE 0x04 757 }; 758 759 /* 760 * Unified state structures for pulling states out of the kernel 761 * used by pfsync(4) and the pf(4) ioctl. 762 */ 763 struct pfsync_state_scrub { 764 u_int16_t pfss_flags; 765 u_int8_t pfss_ttl; /* stashed TTL */ 766 #define PFSYNC_SCRUB_FLAG_VALID 0x01 767 u_int8_t scrub_flag; 768 u_int32_t pfss_ts_mod; /* timestamp modulation */ 769 } __packed; 770 771 struct pfsync_state_host { 772 struct pf_addr addr; 773 u_int16_t port; 774 u_int16_t pad[3]; 775 } __packed; 776 777 struct pfsync_state_peer { 778 struct pfsync_state_scrub scrub; /* state is scrubbed */ 779 u_int32_t seqlo; /* Max sequence number sent */ 780 u_int32_t seqhi; /* Max the other end ACKd + win */ 781 u_int32_t seqdiff; /* Sequence number modulator */ 782 u_int16_t max_win; /* largest window (pre scaling) */ 783 u_int16_t mss; /* Maximum segment size option */ 784 u_int8_t state; /* active state level */ 785 u_int8_t wscale; /* window scaling factor */ 786 u_int8_t pad[6]; 787 } __packed; 788 789 struct pfsync_state { 790 u_int32_t id[2]; 791 char ifname[IFNAMSIZ]; 792 struct pfsync_state_host lan; 793 struct pfsync_state_host gwy; 794 struct pfsync_state_host ext; 795 struct pfsync_state_peer src; 796 struct pfsync_state_peer dst; 797 struct pf_addr rt_addr; 798 u_int32_t rule; 799 u_int32_t anchor; 800 u_int32_t nat_rule; 801 u_int32_t creation; 802 u_int32_t expire; 803 u_int32_t packets[2][2]; 804 u_int32_t bytes[2][2]; 805 u_int32_t creatorid; 806 sa_family_t af; 807 u_int8_t proto; 808 u_int8_t direction; 809 u_int8_t log; 810 u_int8_t allow_opts; 811 u_int8_t timeout; 812 u_int8_t sync_flags; 813 u_int8_t updates; 814 } __packed; 815 816 #define PFSYNC_FLAG_COMPRESS 0x01 817 #define PFSYNC_FLAG_STALE 0x02 818 #define PFSYNC_FLAG_SRCNODE 0x04 819 #define PFSYNC_FLAG_NATSRCNODE 0x08 820 821 /* for copies to/from userland via pf_ioctl() */ 822 #define pf_state_peer_to_pfsync(s,d) do { \ 823 (d)->seqlo = (s)->seqlo; \ 824 (d)->seqhi = (s)->seqhi; \ 825 (d)->seqdiff = (s)->seqdiff; \ 826 (d)->max_win = (s)->max_win; \ 827 (d)->mss = (s)->mss; \ 828 (d)->state = (s)->state; \ 829 (d)->wscale = (s)->wscale; \ 830 if ((s)->scrub) { \ 831 (d)->scrub.pfss_flags = \ 832 (s)->scrub->pfss_flags & PFSS_TIMESTAMP; \ 833 (d)->scrub.pfss_ttl = (s)->scrub->pfss_ttl; \ 834 (d)->scrub.pfss_ts_mod = (s)->scrub->pfss_ts_mod; \ 835 (d)->scrub.scrub_flag = PFSYNC_SCRUB_FLAG_VALID; \ 836 } \ 837 } while (0) 838 839 #define pf_state_peer_from_pfsync(s,d) do { \ 840 (d)->seqlo = (s)->seqlo; \ 841 (d)->seqhi = (s)->seqhi; \ 842 (d)->seqdiff = (s)->seqdiff; \ 843 (d)->max_win = (s)->max_win; \ 844 (d)->mss = ntohs((s)->mss); \ 845 (d)->state = (s)->state; \ 846 (d)->wscale = (s)->wscale; \ 847 if ((s)->scrub.scrub_flag == PFSYNC_SCRUB_FLAG_VALID && \ 848 (d)->scrub != NULL) { \ 849 (d)->scrub->pfss_flags = \ 850 ntohs((s)->scrub.pfss_flags) & PFSS_TIMESTAMP; \ 851 (d)->scrub->pfss_ttl = (s)->scrub.pfss_ttl; \ 852 (d)->scrub->pfss_ts_mod = (s)->scrub.pfss_ts_mod; \ 853 } \ 854 } while (0) 855 856 #define pf_state_counter_to_pfsync(s,d) do { \ 857 d[0] = (s>>32)&0xffffffff; \ 858 d[1] = s&0xffffffff; \ 859 } while (0) 860 861 #define pf_state_counter_from_pfsync(s) \ 862 (((u_int64_t)(s[0])<<32) | (u_int64_t)(s[1])) 863 864 865 866 TAILQ_HEAD(pf_rulequeue, pf_rule); 867 868 struct pf_anchor; 869 870 struct pf_ruleset { 871 struct { 872 struct pf_rulequeue queues[2]; 873 struct { 874 struct pf_rulequeue *ptr; 875 struct pf_rule **ptr_array; 876 u_int32_t rcount; 877 u_int32_t ticket; 878 int open; 879 } active, inactive; 880 } rules[PF_RULESET_MAX]; 881 struct pf_anchor *anchor; 882 u_int32_t tticket; 883 int tables; 884 int topen; 885 }; 886 887 RB_HEAD(pf_anchor_global, pf_anchor); 888 RB_HEAD(pf_anchor_node, pf_anchor); 889 struct pf_anchor { 890 RB_ENTRY(pf_anchor) entry_global; 891 RB_ENTRY(pf_anchor) entry_node; 892 struct pf_anchor *parent; 893 struct pf_anchor_node children; 894 char name[PF_ANCHOR_NAME_SIZE]; 895 char path[MAXPATHLEN]; 896 struct pf_ruleset ruleset; 897 int refcnt; /* anchor rules */ 898 int match; 899 }; 900 RB_PROTOTYPE(pf_anchor_global, pf_anchor, entry_global, pf_anchor_compare); 901 RB_PROTOTYPE(pf_anchor_node, pf_anchor, entry_node, pf_anchor_compare); 902 903 #define PF_RESERVED_ANCHOR "_pf" 904 905 #define PFR_TFLAG_PERSIST 0x00000001 906 #define PFR_TFLAG_CONST 0x00000002 907 #define PFR_TFLAG_ACTIVE 0x00000004 908 #define PFR_TFLAG_INACTIVE 0x00000008 909 #define PFR_TFLAG_REFERENCED 0x00000010 910 #define PFR_TFLAG_REFDANCHOR 0x00000020 911 #define PFR_TFLAG_USRMASK 0x00000003 912 #define PFR_TFLAG_SETMASK 0x0000003C 913 #define PFR_TFLAG_ALLMASK 0x0000003F 914 915 struct pfr_table { 916 char pfrt_anchor[MAXPATHLEN]; 917 char pfrt_name[PF_TABLE_NAME_SIZE]; 918 u_int32_t pfrt_flags; 919 u_int8_t pfrt_fback; 920 }; 921 922 enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED, 923 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE, 924 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_MAX }; 925 926 struct pfr_addr { 927 union { 928 struct in_addr _pfra_ip4addr; 929 struct in6_addr _pfra_ip6addr; 930 } pfra_u; 931 u_int8_t pfra_af; 932 u_int8_t pfra_net; 933 u_int8_t pfra_not; 934 u_int8_t pfra_fback; 935 }; 936 #define pfra_ip4addr pfra_u._pfra_ip4addr 937 #define pfra_ip6addr pfra_u._pfra_ip6addr 938 939 enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX }; 940 enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX }; 941 #define PFR_OP_XPASS PFR_OP_ADDR_MAX 942 943 struct pfr_astats { 944 struct pfr_addr pfras_a; 945 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 946 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 947 long pfras_tzero; 948 }; 949 950 enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX }; 951 952 struct pfr_tstats { 953 struct pfr_table pfrts_t; 954 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 955 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 956 u_int64_t pfrts_match; 957 u_int64_t pfrts_nomatch; 958 long pfrts_tzero; 959 int pfrts_cnt; 960 int pfrts_refcnt[PFR_REFCNT_MAX]; 961 }; 962 #define pfrts_name pfrts_t.pfrt_name 963 #define pfrts_flags pfrts_t.pfrt_flags 964 965 SLIST_HEAD(pfr_kentryworkq, pfr_kentry); 966 struct pfr_kentry { 967 struct radix_node pfrke_node[2]; 968 union sockaddr_union pfrke_sa; 969 u_int64_t pfrke_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 970 u_int64_t pfrke_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 971 SLIST_ENTRY(pfr_kentry) pfrke_workq; 972 long pfrke_tzero; 973 u_int8_t pfrke_af; 974 u_int8_t pfrke_net; 975 u_int8_t pfrke_not; 976 u_int8_t pfrke_mark; 977 u_int8_t pfrke_intrpool; 978 }; 979 980 SLIST_HEAD(pfr_ktableworkq, pfr_ktable); 981 RB_HEAD(pfr_ktablehead, pfr_ktable); 982 struct pfr_ktable { 983 struct pfr_tstats pfrkt_ts; 984 RB_ENTRY(pfr_ktable) pfrkt_tree; 985 SLIST_ENTRY(pfr_ktable) pfrkt_workq; 986 struct radix_node_head *pfrkt_ip4; 987 struct radix_node_head *pfrkt_ip6; 988 struct pfr_ktable *pfrkt_shadow; 989 struct pfr_ktable *pfrkt_root; 990 struct pf_ruleset *pfrkt_rs; 991 long pfrkt_larg; 992 int pfrkt_nflags; 993 }; 994 #define pfrkt_t pfrkt_ts.pfrts_t 995 #define pfrkt_name pfrkt_t.pfrt_name 996 #define pfrkt_anchor pfrkt_t.pfrt_anchor 997 #define pfrkt_ruleset pfrkt_t.pfrt_ruleset 998 #define pfrkt_flags pfrkt_t.pfrt_flags 999 #define pfrkt_cnt pfrkt_ts.pfrts_cnt 1000 #define pfrkt_refcnt pfrkt_ts.pfrts_refcnt 1001 #define pfrkt_packets pfrkt_ts.pfrts_packets 1002 #define pfrkt_bytes pfrkt_ts.pfrts_bytes 1003 #define pfrkt_match pfrkt_ts.pfrts_match 1004 #define pfrkt_nomatch pfrkt_ts.pfrts_nomatch 1005 #define pfrkt_tzero pfrkt_ts.pfrts_tzero 1006 1007 RB_HEAD(pf_state_tree_lan_ext, pf_state_key); 1008 RB_PROTOTYPE(pf_state_tree_lan_ext, pf_state_key, 1009 entry_lan_ext, pf_state_compare_lan_ext); 1010 1011 RB_HEAD(pf_state_tree_ext_gwy, pf_state_key); 1012 RB_PROTOTYPE(pf_state_tree_ext_gwy, pf_state_key, 1013 entry_ext_gwy, pf_state_compare_ext_gwy); 1014 1015 RB_HEAD(pfi_ifhead, pfi_kif); 1016 1017 /* state tables */ 1018 extern struct pf_state_tree_lan_ext pf_statetbl_lan_ext; 1019 extern struct pf_state_tree_ext_gwy pf_statetbl_ext_gwy; 1020 1021 /* keep synced with pfi_kif, used in RB_FIND */ 1022 struct pfi_kif_cmp { 1023 char pfik_name[IFNAMSIZ]; 1024 }; 1025 1026 struct pfi_kif { 1027 char pfik_name[IFNAMSIZ]; 1028 RB_ENTRY(pfi_kif) pfik_tree; 1029 u_int64_t pfik_packets[2][2][2]; 1030 u_int64_t pfik_bytes[2][2][2]; 1031 u_int32_t pfik_tzero; 1032 int pfik_flags; 1033 void *pfik_ah_cookie; 1034 struct ifnet *pfik_ifp; 1035 struct ifg_group *pfik_group; 1036 int pfik_states; 1037 int pfik_rules; 1038 TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs; 1039 }; 1040 1041 enum pfi_kif_refs { 1042 PFI_KIF_REF_NONE, 1043 PFI_KIF_REF_STATE, 1044 PFI_KIF_REF_RULE 1045 }; 1046 1047 #define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */ 1048 1049 struct pf_pdesc { 1050 struct { 1051 int done; 1052 uid_t uid; 1053 gid_t gid; 1054 pid_t pid; 1055 } lookup; 1056 u_int64_t tot_len; /* Make Mickey money */ 1057 union { 1058 struct tcphdr *tcp; 1059 struct udphdr *udp; 1060 struct icmp *icmp; 1061 #ifdef INET6 1062 struct icmp6_hdr *icmp6; 1063 #endif /* INET6 */ 1064 void *any; 1065 } hdr; 1066 struct pf_addr baddr; /* address before translation */ 1067 struct pf_addr naddr; /* address after translation */ 1068 struct pf_rule *nat_rule; /* nat/rdr rule applied to packet */ 1069 struct pf_addr *src; 1070 struct pf_addr *dst; 1071 struct ether_header 1072 *eh; 1073 u_int16_t *ip_sum; 1074 u_int32_t p_len; /* total length of payload */ 1075 u_int16_t flags; /* Let SCRUB trigger behavior in 1076 * state code. Easier than tags */ 1077 #define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */ 1078 #define PFDESC_IP_REAS 0x0002 /* IP frags would've been reassembled */ 1079 sa_family_t af; 1080 u_int8_t proto; 1081 u_int8_t tos; 1082 }; 1083 1084 /* flags for RDR options */ 1085 #define PF_DPORT_RANGE 0x01 /* Dest port uses range */ 1086 #define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */ 1087 1088 /* Reasons code for passing/dropping a packet */ 1089 #define PFRES_MATCH 0 /* Explicit match of a rule */ 1090 #define PFRES_BADOFF 1 /* Bad offset for pull_hdr */ 1091 #define PFRES_FRAG 2 /* Dropping following fragment */ 1092 #define PFRES_SHORT 3 /* Dropping short packet */ 1093 #define PFRES_NORM 4 /* Dropping by normalizer */ 1094 #define PFRES_MEMORY 5 /* Dropped due to lacking mem */ 1095 #define PFRES_TS 6 /* Bad TCP Timestamp (RFC1323) */ 1096 #define PFRES_CONGEST 7 /* Congestion (of ipintrq) */ 1097 #define PFRES_IPOPTIONS 8 /* IP option */ 1098 #define PFRES_PROTCKSUM 9 /* Protocol checksum invalid */ 1099 #define PFRES_BADSTATE 10 /* State mismatch */ 1100 #define PFRES_STATEINS 11 /* State insertion failure */ 1101 #define PFRES_MAXSTATES 12 /* State limit */ 1102 #define PFRES_SRCLIMIT 13 /* Source node/conn limit */ 1103 #define PFRES_SYNPROXY 14 /* SYN proxy */ 1104 #define PFRES_MAX 15 /* total+1 */ 1105 1106 #define PFRES_NAMES { \ 1107 "match", \ 1108 "bad-offset", \ 1109 "fragment", \ 1110 "short", \ 1111 "normalize", \ 1112 "memory", \ 1113 "bad-timestamp", \ 1114 "congestion", \ 1115 "ip-option", \ 1116 "proto-cksum", \ 1117 "state-mismatch", \ 1118 "state-insert", \ 1119 "state-limit", \ 1120 "src-limit", \ 1121 "synproxy", \ 1122 NULL \ 1123 } 1124 1125 /* Counters for other things we want to keep track of */ 1126 #define LCNT_STATES 0 /* states */ 1127 #define LCNT_SRCSTATES 1 /* max-src-states */ 1128 #define LCNT_SRCNODES 2 /* max-src-nodes */ 1129 #define LCNT_SRCCONN 3 /* max-src-conn */ 1130 #define LCNT_SRCCONNRATE 4 /* max-src-conn-rate */ 1131 #define LCNT_OVERLOAD_TABLE 5 /* entry added to overload table */ 1132 #define LCNT_OVERLOAD_FLUSH 6 /* state entries flushed */ 1133 #define LCNT_MAX 7 /* total+1 */ 1134 1135 #define LCNT_NAMES { \ 1136 "max states per rule", \ 1137 "max-src-states", \ 1138 "max-src-nodes", \ 1139 "max-src-conn", \ 1140 "max-src-conn-rate", \ 1141 "overload table insertion", \ 1142 "overload flush states", \ 1143 NULL \ 1144 } 1145 1146 /* UDP state enumeration */ 1147 #define PFUDPS_NO_TRAFFIC 0 1148 #define PFUDPS_SINGLE 1 1149 #define PFUDPS_MULTIPLE 2 1150 1151 #define PFUDPS_NSTATES 3 /* number of state levels */ 1152 1153 #define PFUDPS_NAMES { \ 1154 "NO_TRAFFIC", \ 1155 "SINGLE", \ 1156 "MULTIPLE", \ 1157 NULL \ 1158 } 1159 1160 /* Other protocol state enumeration */ 1161 #define PFOTHERS_NO_TRAFFIC 0 1162 #define PFOTHERS_SINGLE 1 1163 #define PFOTHERS_MULTIPLE 2 1164 1165 #define PFOTHERS_NSTATES 3 /* number of state levels */ 1166 1167 #define PFOTHERS_NAMES { \ 1168 "NO_TRAFFIC", \ 1169 "SINGLE", \ 1170 "MULTIPLE", \ 1171 NULL \ 1172 } 1173 1174 #define FCNT_STATE_SEARCH 0 1175 #define FCNT_STATE_INSERT 1 1176 #define FCNT_STATE_REMOVALS 2 1177 #define FCNT_MAX 3 1178 1179 #define SCNT_SRC_NODE_SEARCH 0 1180 #define SCNT_SRC_NODE_INSERT 1 1181 #define SCNT_SRC_NODE_REMOVALS 2 1182 #define SCNT_MAX 3 1183 1184 #define ACTION_SET(a, x) \ 1185 do { \ 1186 if ((a) != NULL) \ 1187 *(a) = (x); \ 1188 } while (0) 1189 1190 #define REASON_SET(a, x) \ 1191 do { \ 1192 if ((a) != NULL) \ 1193 *(a) = (x); \ 1194 if (x < PFRES_MAX) \ 1195 pf_status.counters[x]++; \ 1196 } while (0) 1197 1198 struct pf_status { 1199 u_int64_t counters[PFRES_MAX]; 1200 u_int64_t lcounters[LCNT_MAX]; /* limit counters */ 1201 u_int64_t fcounters[FCNT_MAX]; 1202 u_int64_t scounters[SCNT_MAX]; 1203 u_int64_t pcounters[2][2][3]; 1204 u_int64_t bcounters[2][2]; 1205 u_int64_t stateid; 1206 u_int32_t running; 1207 u_int32_t states; 1208 u_int32_t src_nodes; 1209 u_int32_t since; 1210 u_int32_t debug; 1211 u_int32_t hostid; 1212 char ifname[IFNAMSIZ]; 1213 u_int8_t pf_chksum[PF_MD5_DIGEST_LENGTH]; 1214 }; 1215 1216 struct cbq_opts { 1217 u_int minburst; 1218 u_int maxburst; 1219 u_int pktsize; 1220 u_int maxpktsize; 1221 u_int ns_per_byte; 1222 u_int maxidle; 1223 int minidle; 1224 u_int offtime; 1225 int flags; 1226 }; 1227 1228 struct priq_opts { 1229 int flags; 1230 }; 1231 1232 struct hfsc_opts { 1233 /* real-time service curve */ 1234 u_int rtsc_m1; /* slope of the 1st segment in bps */ 1235 u_int rtsc_d; /* the x-projection of m1 in msec */ 1236 u_int rtsc_m2; /* slope of the 2nd segment in bps */ 1237 /* link-sharing service curve */ 1238 u_int lssc_m1; 1239 u_int lssc_d; 1240 u_int lssc_m2; 1241 /* upper-limit service curve */ 1242 u_int ulsc_m1; 1243 u_int ulsc_d; 1244 u_int ulsc_m2; 1245 int flags; 1246 }; 1247 1248 struct pf_altq { 1249 char ifname[IFNAMSIZ]; 1250 1251 void *altq_disc; /* discipline-specific state */ 1252 TAILQ_ENTRY(pf_altq) entries; 1253 1254 /* scheduler spec */ 1255 u_int8_t scheduler; /* scheduler type */ 1256 u_int16_t tbrsize; /* tokenbucket regulator size */ 1257 u_int32_t ifbandwidth; /* interface bandwidth */ 1258 1259 /* queue spec */ 1260 char qname[PF_QNAME_SIZE]; /* queue name */ 1261 char parent[PF_QNAME_SIZE]; /* parent name */ 1262 u_int32_t parent_qid; /* parent queue id */ 1263 u_int32_t bandwidth; /* queue bandwidth */ 1264 u_int8_t priority; /* priority */ 1265 u_int16_t qlimit; /* queue size limit */ 1266 u_int16_t flags; /* misc flags */ 1267 union { 1268 struct cbq_opts cbq_opts; 1269 struct priq_opts priq_opts; 1270 struct hfsc_opts hfsc_opts; 1271 } pq_u; 1272 1273 u_int32_t qid; /* return value */ 1274 }; 1275 1276 struct pf_tag { 1277 u_int16_t tag; /* tag id */ 1278 }; 1279 1280 struct pf_tagname { 1281 TAILQ_ENTRY(pf_tagname) entries; 1282 char name[PF_TAG_NAME_SIZE]; 1283 u_int16_t tag; 1284 int ref; 1285 }; 1286 1287 #define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */ 1288 #define PFFRAG_FRAG_HIWAT 1000 /* Number of fragmented packets */ 1289 #define PFFRAG_FRCENT_HIWAT 50000 /* Number of fragment cache entries */ 1290 #define PFFRAG_FRCACHE_HIWAT 10000 /* Number of fragment descriptors */ 1291 1292 #define PFR_KTABLE_HIWAT 1000 /* Number of tables */ 1293 #define PFR_KENTRY_HIWAT 200000 /* Number of table entries */ 1294 #define PFR_KENTRY_HIWAT_SMALL 100000 /* Number of table entries (tiny hosts) */ 1295 1296 /* 1297 * ioctl parameter structures 1298 */ 1299 1300 struct pfioc_pooladdr { 1301 u_int32_t action; 1302 u_int32_t ticket; 1303 u_int32_t nr; 1304 u_int32_t r_num; 1305 u_int8_t r_action; 1306 u_int8_t r_last; 1307 u_int8_t af; 1308 char anchor[MAXPATHLEN]; 1309 struct pf_pooladdr addr; 1310 }; 1311 1312 struct pfioc_rule { 1313 u_int32_t action; 1314 u_int32_t ticket; 1315 u_int32_t pool_ticket; 1316 u_int32_t nr; 1317 char anchor[MAXPATHLEN]; 1318 char anchor_call[MAXPATHLEN]; 1319 struct pf_rule rule; 1320 }; 1321 1322 struct pfioc_natlook { 1323 struct pf_addr saddr; 1324 struct pf_addr daddr; 1325 struct pf_addr rsaddr; 1326 struct pf_addr rdaddr; 1327 u_int16_t sport; 1328 u_int16_t dport; 1329 u_int16_t rsport; 1330 u_int16_t rdport; 1331 sa_family_t af; 1332 u_int8_t proto; 1333 u_int8_t direction; 1334 }; 1335 1336 struct pfioc_state { 1337 u_int32_t nr; 1338 void *state; 1339 }; 1340 1341 struct pfioc_src_node_kill { 1342 /* XXX returns the number of src nodes killed in psnk_af */ 1343 sa_family_t psnk_af; 1344 struct pf_rule_addr psnk_src; 1345 struct pf_rule_addr psnk_dst; 1346 }; 1347 1348 struct pfioc_state_kill { 1349 /* XXX returns the number of states killed in psk_af */ 1350 sa_family_t psk_af; 1351 int psk_proto; 1352 struct pf_rule_addr psk_src; 1353 struct pf_rule_addr psk_dst; 1354 char psk_ifname[IFNAMSIZ]; 1355 }; 1356 1357 struct pfioc_states { 1358 int ps_len; 1359 union { 1360 caddr_t psu_buf; 1361 struct pfsync_state *psu_states; 1362 } ps_u; 1363 #define ps_buf ps_u.psu_buf 1364 #define ps_states ps_u.psu_states 1365 }; 1366 1367 struct pfioc_src_nodes { 1368 int psn_len; 1369 union { 1370 caddr_t psu_buf; 1371 struct pf_src_node *psu_src_nodes; 1372 } psn_u; 1373 #define psn_buf psn_u.psu_buf 1374 #define psn_src_nodes psn_u.psu_src_nodes 1375 }; 1376 1377 struct pfioc_if { 1378 char ifname[IFNAMSIZ]; 1379 }; 1380 1381 struct pfioc_tm { 1382 int timeout; 1383 int seconds; 1384 }; 1385 1386 struct pfioc_limit { 1387 int index; 1388 unsigned limit; 1389 }; 1390 1391 struct pfioc_altq { 1392 u_int32_t action; 1393 u_int32_t ticket; 1394 u_int32_t nr; 1395 struct pf_altq altq; 1396 }; 1397 1398 struct pfioc_qstats { 1399 u_int32_t ticket; 1400 u_int32_t nr; 1401 void *buf; 1402 int nbytes; 1403 u_int8_t scheduler; 1404 }; 1405 1406 struct pfioc_ruleset { 1407 u_int32_t nr; 1408 char path[MAXPATHLEN]; 1409 char name[PF_ANCHOR_NAME_SIZE]; 1410 }; 1411 1412 #define PF_RULESET_ALTQ (PF_RULESET_MAX) 1413 #define PF_RULESET_TABLE (PF_RULESET_MAX+1) 1414 struct pfioc_trans { 1415 int size; /* number of elements */ 1416 int esize; /* size of each element in bytes */ 1417 struct pfioc_trans_e { 1418 int rs_num; 1419 char anchor[MAXPATHLEN]; 1420 u_int32_t ticket; 1421 } *array; 1422 }; 1423 1424 #define PFR_FLAG_ATOMIC 0x00000001 1425 #define PFR_FLAG_DUMMY 0x00000002 1426 #define PFR_FLAG_FEEDBACK 0x00000004 1427 #define PFR_FLAG_CLSTATS 0x00000008 1428 #define PFR_FLAG_ADDRSTOO 0x00000010 1429 #define PFR_FLAG_REPLACE 0x00000020 1430 #define PFR_FLAG_ALLRSETS 0x00000040 1431 #define PFR_FLAG_ALLMASK 0x0000007F 1432 #ifdef _KERNEL 1433 #define PFR_FLAG_USERIOCTL 0x10000000 1434 #endif 1435 1436 struct pfioc_table { 1437 struct pfr_table pfrio_table; 1438 void *pfrio_buffer; 1439 int pfrio_esize; 1440 int pfrio_size; 1441 int pfrio_size2; 1442 int pfrio_nadd; 1443 int pfrio_ndel; 1444 int pfrio_nchange; 1445 int pfrio_flags; 1446 u_int32_t pfrio_ticket; 1447 }; 1448 #define pfrio_exists pfrio_nadd 1449 #define pfrio_nzero pfrio_nadd 1450 #define pfrio_nmatch pfrio_nadd 1451 #define pfrio_naddr pfrio_size2 1452 #define pfrio_setflag pfrio_size2 1453 #define pfrio_clrflag pfrio_nadd 1454 1455 struct pfioc_iface { 1456 char pfiio_name[IFNAMSIZ]; 1457 void *pfiio_buffer; 1458 int pfiio_esize; 1459 int pfiio_size; 1460 int pfiio_nzero; 1461 int pfiio_flags; 1462 }; 1463 1464 1465 /* 1466 * ioctl operations 1467 */ 1468 1469 #define DIOCSTART _IO ('D', 1) 1470 #define DIOCSTOP _IO ('D', 2) 1471 #define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule) 1472 #define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule) 1473 #define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule) 1474 /* XXX cut 8 - 17 */ 1475 #define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill) 1476 #define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state) 1477 #define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if) 1478 #define DIOCGETSTATUS _IOWR('D', 21, struct pf_status) 1479 #define DIOCCLRSTATUS _IO ('D', 22) 1480 #define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook) 1481 #define DIOCSETDEBUG _IOWR('D', 24, u_int32_t) 1482 #define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states) 1483 #define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule) 1484 /* XXX cut 26 - 28 */ 1485 #define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm) 1486 #define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm) 1487 #define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state) 1488 #define DIOCCLRRULECTRS _IO ('D', 38) 1489 #define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit) 1490 #define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit) 1491 #define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill) 1492 #define DIOCSTARTALTQ _IO ('D', 42) 1493 #define DIOCSTOPALTQ _IO ('D', 43) 1494 #define DIOCADDALTQ _IOWR('D', 45, struct pfioc_altq) 1495 #define DIOCGETALTQS _IOWR('D', 47, struct pfioc_altq) 1496 #define DIOCGETALTQ _IOWR('D', 48, struct pfioc_altq) 1497 #define DIOCCHANGEALTQ _IOWR('D', 49, struct pfioc_altq) 1498 #define DIOCGETQSTATS _IOWR('D', 50, struct pfioc_qstats) 1499 #define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr) 1500 #define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr) 1501 #define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr) 1502 #define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr) 1503 #define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr) 1504 /* XXX cut 55 - 57 */ 1505 #define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset) 1506 #define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset) 1507 #define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table) 1508 #define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table) 1509 #define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table) 1510 #define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table) 1511 #define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table) 1512 #define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table) 1513 #define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table) 1514 #define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table) 1515 #define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table) 1516 #define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table) 1517 #define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table) 1518 #define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table) 1519 #define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table) 1520 #define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table) 1521 #define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table) 1522 #define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table) 1523 #define DIOCOSFPFLUSH _IO('D', 78) 1524 #define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl) 1525 #define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl) 1526 #define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans) 1527 #define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans) 1528 #define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans) 1529 #define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes) 1530 #define DIOCCLRSRCNODES _IO('D', 85) 1531 #define DIOCSETHOSTID _IOWR('D', 86, u_int32_t) 1532 #define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface) 1533 #define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface) 1534 #define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface) 1535 #define DIOCKILLSRCNODES _IOWR('D', 91, struct pfioc_src_node_kill) 1536 1537 #ifdef _KERNEL 1538 RB_HEAD(pf_src_tree, pf_src_node); 1539 RB_PROTOTYPE(pf_src_tree, pf_src_node, entry, pf_src_compare); 1540 extern struct pf_src_tree tree_src_tracking; 1541 1542 RB_HEAD(pf_state_tree_id, pf_state); 1543 RB_PROTOTYPE(pf_state_tree_id, pf_state, 1544 entry_id, pf_state_compare_id); 1545 extern struct pf_state_tree_id tree_id; 1546 extern struct pf_state_queue state_list; 1547 1548 TAILQ_HEAD(pf_poolqueue, pf_pool); 1549 extern struct pf_poolqueue pf_pools[2]; 1550 TAILQ_HEAD(pf_altqqueue, pf_altq); 1551 extern struct pf_altqqueue pf_altqs[2]; 1552 extern struct pf_palist pf_pabuf; 1553 1554 extern u_int32_t ticket_altqs_active; 1555 extern u_int32_t ticket_altqs_inactive; 1556 extern int altqs_inactive_open; 1557 extern u_int32_t ticket_pabuf; 1558 extern struct pf_altqqueue *pf_altqs_active; 1559 extern struct pf_altqqueue *pf_altqs_inactive; 1560 extern struct pf_poolqueue *pf_pools_active; 1561 extern struct pf_poolqueue *pf_pools_inactive; 1562 extern int pf_tbladdr_setup(struct pf_ruleset *, 1563 struct pf_addr_wrap *); 1564 extern void pf_tbladdr_remove(struct pf_addr_wrap *); 1565 extern void pf_tbladdr_copyout(struct pf_addr_wrap *); 1566 extern void pf_calc_skip_steps(struct pf_rulequeue *); 1567 extern struct pool pf_src_tree_pl, pf_rule_pl; 1568 extern struct pool pf_state_pl, pf_state_key_pl, pf_altq_pl, 1569 pf_pooladdr_pl; 1570 extern struct pool pf_state_scrub_pl; 1571 extern void pf_purge_thread(void *); 1572 extern void pf_purge_expired_src_nodes(int); 1573 extern void pf_purge_expired_states(u_int32_t); 1574 extern void pf_unlink_state(struct pf_state *); 1575 extern void pf_free_state(struct pf_state *); 1576 extern int pf_insert_state(struct pfi_kif *, 1577 struct pf_state *); 1578 extern int pf_insert_src_node(struct pf_src_node **, 1579 struct pf_rule *, struct pf_addr *, 1580 sa_family_t); 1581 void pf_src_tree_remove_state(struct pf_state *); 1582 extern struct pf_state *pf_find_state_byid(struct pf_state_cmp *); 1583 extern struct pf_state *pf_find_state_all(struct pf_state_key_cmp *, 1584 u_int8_t, int *); 1585 extern void pf_print_state(struct pf_state *); 1586 extern void pf_print_flags(u_int8_t); 1587 extern u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t, 1588 u_int8_t); 1589 1590 extern struct ifnet *sync_ifp; 1591 extern struct pf_rule pf_default_rule; 1592 extern void pf_addrcpy(struct pf_addr *, struct pf_addr *, 1593 u_int8_t); 1594 void pf_rm_rule(struct pf_rulequeue *, 1595 struct pf_rule *); 1596 1597 #ifdef INET 1598 int pf_test(int, struct ifnet *, struct mbuf **, struct ether_header *); 1599 #endif /* INET */ 1600 1601 #ifdef INET6 1602 int pf_test6(int, struct ifnet *, struct mbuf **, struct ether_header *); 1603 void pf_poolmask(struct pf_addr *, struct pf_addr*, 1604 struct pf_addr *, struct pf_addr *, u_int8_t); 1605 void pf_addr_inc(struct pf_addr *, sa_family_t); 1606 #endif /* INET6 */ 1607 1608 void *pf_pull_hdr(struct mbuf *, int, void *, int, u_short *, u_short *, 1609 sa_family_t); 1610 void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t); 1611 int pflog_packet(struct pfi_kif *, struct mbuf *, sa_family_t, u_int8_t, 1612 u_int8_t, struct pf_rule *, struct pf_rule *, struct pf_ruleset *, 1613 struct pf_pdesc *); 1614 int pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *, 1615 struct pf_addr *, sa_family_t); 1616 int pf_match(u_int8_t, u_int32_t, u_int32_t, u_int32_t); 1617 int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t); 1618 int pf_match_uid(u_int8_t, uid_t, uid_t, uid_t); 1619 int pf_match_gid(u_int8_t, gid_t, gid_t, gid_t); 1620 1621 void pf_normalize_init(void); 1622 int pf_normalize_ip(struct mbuf **, int, struct pfi_kif *, u_short *, 1623 struct pf_pdesc *); 1624 int pf_normalize_ip6(struct mbuf **, int, struct pfi_kif *, u_short *, 1625 struct pf_pdesc *); 1626 int pf_normalize_tcp(int, struct pfi_kif *, struct mbuf *, int, int, void *, 1627 struct pf_pdesc *); 1628 void pf_normalize_tcp_cleanup(struct pf_state *); 1629 int pf_normalize_tcp_init(struct mbuf *, int, struct pf_pdesc *, 1630 struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *); 1631 int pf_normalize_tcp_stateful(struct mbuf *, int, struct pf_pdesc *, 1632 u_short *, struct tcphdr *, struct pf_state *, 1633 struct pf_state_peer *, struct pf_state_peer *, int *); 1634 u_int32_t 1635 pf_state_expires(const struct pf_state *); 1636 void pf_purge_expired_fragments(void); 1637 int pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kif *); 1638 int pf_rtlabel_match(struct pf_addr *, sa_family_t, struct pf_addr_wrap *); 1639 int pf_socket_lookup(int, struct pf_pdesc *); 1640 struct pf_state_key * 1641 pf_alloc_state_key(struct pf_state *); 1642 void pfr_initialize(void); 1643 int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t); 1644 void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t, 1645 u_int64_t, int, int, int); 1646 int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, 1647 struct pf_addr **, struct pf_addr **, sa_family_t); 1648 void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *); 1649 struct pfr_ktable * 1650 pfr_attach_table(struct pf_ruleset *, char *); 1651 void pfr_detach_table(struct pfr_ktable *); 1652 int pfr_clr_tables(struct pfr_table *, int *, int); 1653 int pfr_add_tables(struct pfr_table *, int, int *, int); 1654 int pfr_del_tables(struct pfr_table *, int, int *, int); 1655 int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int); 1656 int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int); 1657 int pfr_clr_tstats(struct pfr_table *, int, int *, int); 1658 int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int); 1659 int pfr_clr_addrs(struct pfr_table *, int *, int); 1660 int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *, long); 1661 int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1662 int); 1663 int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1664 int); 1665 int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1666 int *, int *, int *, int, u_int32_t); 1667 int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int); 1668 int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int); 1669 int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *, 1670 int); 1671 int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1672 int); 1673 int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int); 1674 int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int); 1675 int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int); 1676 int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *, 1677 int *, u_int32_t, int); 1678 1679 extern struct pfi_kif *pfi_all; 1680 1681 void pfi_initialize(void); 1682 struct pfi_kif *pfi_kif_get(const char *); 1683 void pfi_kif_ref(struct pfi_kif *, enum pfi_kif_refs); 1684 void pfi_kif_unref(struct pfi_kif *, enum pfi_kif_refs); 1685 int pfi_kif_match(struct pfi_kif *, struct pfi_kif *); 1686 void pfi_attach_ifnet(struct ifnet *); 1687 void pfi_detach_ifnet(struct ifnet *); 1688 void pfi_attach_ifgroup(struct ifg_group *); 1689 void pfi_detach_ifgroup(struct ifg_group *); 1690 void pfi_group_change(const char *); 1691 int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *, 1692 sa_family_t); 1693 int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t); 1694 void pfi_dynaddr_remove(struct pf_addr_wrap *); 1695 void pfi_dynaddr_copyout(struct pf_addr_wrap *); 1696 void pfi_fill_oldstatus(struct pf_status *); 1697 int pfi_clr_istats(const char *); 1698 int pfi_get_ifaces(const char *, struct pfi_kif *, int *); 1699 int pfi_set_flags(const char *, int); 1700 int pfi_clear_flags(const char *, int); 1701 1702 u_int16_t pf_tagname2tag(char *); 1703 void pf_tag2tagname(u_int16_t, char *); 1704 void pf_tag_ref(u_int16_t); 1705 void pf_tag_unref(u_int16_t); 1706 int pf_tag_packet(struct mbuf *, int, int); 1707 u_int32_t pf_qname2qid(char *); 1708 void pf_qid2qname(u_int32_t, char *); 1709 void pf_qid_unref(u_int32_t); 1710 1711 extern struct pf_status pf_status; 1712 extern struct pool pf_frent_pl, pf_frag_pl; 1713 extern struct rwlock pf_consistency_lock; 1714 1715 struct pf_pool_limit { 1716 void *pp; 1717 unsigned limit; 1718 }; 1719 extern struct pf_pool_limit pf_pool_limits[PF_LIMIT_MAX]; 1720 1721 #endif /* _KERNEL */ 1722 1723 extern struct pf_anchor_global pf_anchors; 1724 extern struct pf_anchor pf_main_anchor; 1725 #define pf_main_ruleset pf_main_anchor.ruleset 1726 1727 /* these ruleset functions can be linked into userland programs (pfctl) */ 1728 int pf_get_ruleset_number(u_int8_t); 1729 void pf_init_ruleset(struct pf_ruleset *); 1730 int pf_anchor_setup(struct pf_rule *, 1731 const struct pf_ruleset *, const char *); 1732 int pf_anchor_copyout(const struct pf_ruleset *, 1733 const struct pf_rule *, struct pfioc_rule *); 1734 void pf_anchor_remove(struct pf_rule *); 1735 void pf_remove_if_empty_ruleset(struct pf_ruleset *); 1736 struct pf_anchor *pf_find_anchor(const char *); 1737 struct pf_ruleset *pf_find_ruleset(const char *); 1738 struct pf_ruleset *pf_find_or_create_ruleset(const char *); 1739 void pf_rs_initialize(void); 1740 1741 #ifdef _KERNEL 1742 int pf_anchor_copyout(const struct pf_ruleset *, 1743 const struct pf_rule *, struct pfioc_rule *); 1744 void pf_anchor_remove(struct pf_rule *); 1745 1746 #endif /* _KERNEL */ 1747 1748 /* The fingerprint functions can be linked into userland programs (tcpdump) */ 1749 int pf_osfp_add(struct pf_osfp_ioctl *); 1750 #ifdef _KERNEL 1751 struct pf_osfp_enlist * 1752 pf_osfp_fingerprint(struct pf_pdesc *, struct mbuf *, int, 1753 const struct tcphdr *); 1754 #endif /* _KERNEL */ 1755 struct pf_osfp_enlist * 1756 pf_osfp_fingerprint_hdr(const struct ip *, const struct ip6_hdr *, 1757 const struct tcphdr *); 1758 void pf_osfp_flush(void); 1759 int pf_osfp_get(struct pf_osfp_ioctl *); 1760 void pf_osfp_initialize(void); 1761 int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t); 1762 struct pf_os_fingerprint * 1763 pf_osfp_validate(void); 1764 1765 1766 #endif /* _NET_PFVAR_H_ */ 1767
Indexes created Wed Oct 15 14:09:57 GMT 2025