1 /* $OpenBSD: pfvar.h,v 1.401 2014/07/02 13:02:08 mikeb Exp $ */ 2 3 /* 4 * Copyright (c) 2001 Daniel Hartmeier 5 * Copyright (c) 2002 - 2013 Henning Brauer <henning@openbsd.org> 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * - Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * - Redistributions in binary form must reproduce the above 15 * copyright notice, this list of conditions and the following 16 * disclaimer in the documentation and/or other materials provided 17 * with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 22 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 23 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 25 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 26 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 27 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 29 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 * 32 */ 33 34 #ifndef _NET_PFVAR_H_ 35 #define _NET_PFVAR_H_ 36 37 #include <sys/param.h> 38 #include <sys/types.h> 39 #include <sys/queue.h> 40 #include <sys/tree.h> 41 #include <sys/rwlock.h> 42 43 #include <net/radix.h> 44 #include <net/route.h> 45 #include <netinet/ip_ipsp.h> 46 #include <netinet/tcp_fsm.h> 47 48 struct ip; 49 struct ip6_hdr; 50 51 #define PF_TCPS_PROXY_SRC ((TCP_NSTATES)+0) 52 #define PF_TCPS_PROXY_DST ((TCP_NSTATES)+1) 53 54 #define PF_MD5_DIGEST_LENGTH 16 55 #ifdef MD5_DIGEST_LENGTH 56 #if PF_MD5_DIGEST_LENGTH != MD5_DIGEST_LENGTH 57 #error 58 #endif 59 #endif 60 61 enum { PF_INOUT, PF_IN, PF_OUT, PF_FWD }; 62 enum { PF_PASS, PF_DROP, PF_SCRUB, PF_NOSCRUB, PF_NAT, PF_NONAT, 63 PF_BINAT, PF_NOBINAT, PF_RDR, PF_NORDR, PF_SYNPROXY_DROP, PF_DEFER, 64 PF_MATCH, PF_DIVERT, PF_RT, PF_AFRT }; 65 enum { PF_TRANS_RULESET, PF_TRANS_ALTQ, PF_TRANS_TABLE }; 66 enum { PF_OP_NONE, PF_OP_IRG, PF_OP_EQ, PF_OP_NE, PF_OP_LT, 67 PF_OP_LE, PF_OP_GT, PF_OP_GE, PF_OP_XRG, PF_OP_RRG }; 68 enum { PF_CHANGE_NONE, PF_CHANGE_ADD_HEAD, PF_CHANGE_ADD_TAIL, 69 PF_CHANGE_ADD_BEFORE, PF_CHANGE_ADD_AFTER, 70 PF_CHANGE_REMOVE, PF_CHANGE_GET_TICKET }; 71 enum { PF_GET_NONE, PF_GET_CLR_CNTR }; 72 enum { PF_SK_WIRE, PF_SK_STACK, PF_SK_BOTH }; 73 74 /* 75 * Note about PFTM_*: real indices into pf_rule.timeout[] come before 76 * PFTM_MAX, special cases afterwards. See pf_state_expires(). 77 */ 78 enum { PFTM_TCP_FIRST_PACKET, PFTM_TCP_OPENING, PFTM_TCP_ESTABLISHED, 79 PFTM_TCP_CLOSING, PFTM_TCP_FIN_WAIT, PFTM_TCP_CLOSED, 80 PFTM_UDP_FIRST_PACKET, PFTM_UDP_SINGLE, PFTM_UDP_MULTIPLE, 81 PFTM_ICMP_FIRST_PACKET, PFTM_ICMP_ERROR_REPLY, 82 PFTM_OTHER_FIRST_PACKET, PFTM_OTHER_SINGLE, 83 PFTM_OTHER_MULTIPLE, PFTM_FRAG, PFTM_INTERVAL, 84 PFTM_ADAPTIVE_START, PFTM_ADAPTIVE_END, PFTM_SRC_NODE, 85 PFTM_TS_DIFF, PFTM_MAX, PFTM_PURGE, PFTM_UNLINKED }; 86 87 /* PFTM default values */ 88 #define PFTM_TCP_FIRST_PACKET_VAL 120 /* First TCP packet */ 89 #define PFTM_TCP_OPENING_VAL 30 /* No response yet */ 90 #define PFTM_TCP_ESTABLISHED_VAL 24*60*60/* Established */ 91 #define PFTM_TCP_CLOSING_VAL 15 * 60 /* Half closed */ 92 #define PFTM_TCP_FIN_WAIT_VAL 45 /* Got both FINs */ 93 #define PFTM_TCP_CLOSED_VAL 90 /* Got a RST */ 94 #define PFTM_UDP_FIRST_PACKET_VAL 60 /* First UDP packet */ 95 #define PFTM_UDP_SINGLE_VAL 30 /* Unidirectional */ 96 #define PFTM_UDP_MULTIPLE_VAL 60 /* Bidirectional */ 97 #define PFTM_ICMP_FIRST_PACKET_VAL 20 /* First ICMP packet */ 98 #define PFTM_ICMP_ERROR_REPLY_VAL 10 /* Got error response */ 99 #define PFTM_OTHER_FIRST_PACKET_VAL 60 /* First packet */ 100 #define PFTM_OTHER_SINGLE_VAL 30 /* Unidirectional */ 101 #define PFTM_OTHER_MULTIPLE_VAL 60 /* Bidirectional */ 102 #define PFTM_FRAG_VAL 60 /* Fragment expire */ 103 #define PFTM_INTERVAL_VAL 10 /* Expire interval */ 104 #define PFTM_SRC_NODE_VAL 0 /* Source tracking */ 105 #define PFTM_TS_DIFF_VAL 30 /* Allowed TS diff */ 106 107 enum { PF_NOPFROUTE, PF_ROUTETO, PF_DUPTO, PF_REPLYTO }; 108 enum { PF_LIMIT_STATES, PF_LIMIT_SRC_NODES, PF_LIMIT_FRAGS, 109 PF_LIMIT_TABLES, PF_LIMIT_TABLE_ENTRIES, PF_LIMIT_MAX }; 110 #define PF_POOL_IDMASK 0x0f 111 enum { PF_POOL_NONE, PF_POOL_BITMASK, PF_POOL_RANDOM, 112 PF_POOL_SRCHASH, PF_POOL_ROUNDROBIN, PF_POOL_LEASTSTATES }; 113 enum { PF_ADDR_ADDRMASK, PF_ADDR_NOROUTE, PF_ADDR_DYNIFTL, 114 PF_ADDR_TABLE, PF_ADDR_RTLABEL, PF_ADDR_URPFFAILED, 115 PF_ADDR_RANGE, PF_ADDR_NONE }; 116 #define PF_POOL_TYPEMASK 0x0f 117 #define PF_POOL_STICKYADDR 0x20 118 #define PF_WSCALE_FLAG 0x80 119 #define PF_WSCALE_MASK 0x0f 120 121 #define PF_LOG 0x01 122 #define PF_LOG_ALL 0x02 123 #define PF_LOG_SOCKET_LOOKUP 0x04 124 #define PF_LOG_FORCE 0x08 125 #define PF_LOG_MATCHES 0x10 126 127 struct pf_addr { 128 union { 129 struct in_addr v4; 130 struct in6_addr v6; 131 u_int8_t addr8[16]; 132 u_int16_t addr16[8]; 133 u_int32_t addr32[4]; 134 } pfa; /* 128-bit address */ 135 #define v4 pfa.v4 136 #define v6 pfa.v6 137 #define addr8 pfa.addr8 138 #define addr16 pfa.addr16 139 #define addr32 pfa.addr32 140 }; 141 142 #define PF_TABLE_NAME_SIZE 32 143 144 #define PFI_AFLAG_NETWORK 0x01 145 #define PFI_AFLAG_BROADCAST 0x02 146 #define PFI_AFLAG_PEER 0x04 147 #define PFI_AFLAG_MODEMASK 0x07 148 #define PFI_AFLAG_NOALIAS 0x08 149 150 struct pf_addr_wrap { 151 union { 152 struct { 153 struct pf_addr addr; 154 struct pf_addr mask; 155 } a; 156 char ifname[IFNAMSIZ]; 157 char tblname[PF_TABLE_NAME_SIZE]; 158 char rtlabelname[RTLABEL_LEN]; 159 u_int32_t rtlabel; 160 } v; 161 union { 162 struct pfi_dynaddr *dyn; 163 struct pfr_ktable *tbl; 164 int dyncnt; 165 int tblcnt; 166 } p; 167 u_int8_t type; /* PF_ADDR_* */ 168 u_int8_t iflags; /* PFI_AFLAG_* */ 169 }; 170 171 #ifdef _KERNEL 172 173 struct pfi_dynaddr { 174 TAILQ_ENTRY(pfi_dynaddr) entry; 175 struct pf_addr pfid_addr4; 176 struct pf_addr pfid_mask4; 177 struct pf_addr pfid_addr6; 178 struct pf_addr pfid_mask6; 179 struct pfr_ktable *pfid_kt; 180 struct pfi_kif *pfid_kif; 181 void *pfid_hook_cookie; 182 int pfid_net; /* mask or 128 */ 183 int pfid_acnt4; /* address count IPv4 */ 184 int pfid_acnt6; /* address count IPv6 */ 185 sa_family_t pfid_af; /* rule af */ 186 u_int8_t pfid_iflags; /* PFI_AFLAG_* */ 187 }; 188 #endif /* _KERNEL */ 189 190 191 /* 192 * Logging macros 193 */ 194 195 #ifndef PF_DEBUGNAME 196 #define PF_DEBUGNAME "pf: " 197 #endif 198 199 #ifdef _KERNEL 200 #define DPFPRINTF(n, format, x...) \ 201 do { \ 202 if (pf_status.debug >= (n)) { \ 203 log(n, PF_DEBUGNAME); \ 204 addlog(format, ##x); \ 205 addlog("\n"); \ 206 } \ 207 } while (0) 208 #else 209 #ifdef PFDEBUG 210 #define DPFPRINTF(n, format, x...) \ 211 do { \ 212 fprintf(stderr, format, ##x); \ 213 fprintf(stderr, "\n"); \ 214 } while (0) 215 #else 216 #define DPFPRINTF(n, format, x...) ((void)0) 217 #endif /* PFDEBUG */ 218 #endif /* _KERNEL */ 219 220 221 /* 222 * Address manipulation macros 223 */ 224 225 #ifdef _KERNEL 226 #ifdef INET 227 #ifndef INET6 228 #define PF_INET_ONLY 229 #endif /* ! INET6 */ 230 #endif /* INET */ 231 232 #ifdef INET6 233 #ifndef INET 234 #define PF_INET6_ONLY 235 #endif /* ! INET */ 236 #endif /* INET6 */ 237 238 #ifdef INET 239 #ifdef INET6 240 #define PF_INET_INET6 241 #endif /* INET6 */ 242 #endif /* INET */ 243 244 #else 245 246 #define PF_INET_INET6 247 248 #endif /* _KERNEL */ 249 250 /* Both IPv4 and IPv6 */ 251 #ifdef PF_INET_INET6 252 253 #define PF_AEQ(a, b, c) \ 254 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \ 255 (c == AF_INET6 && \ 256 (a)->addr32[3] == (b)->addr32[3] && \ 257 (a)->addr32[2] == (b)->addr32[2] && \ 258 (a)->addr32[1] == (b)->addr32[1] && \ 259 (a)->addr32[0] == (b)->addr32[0])) \ 260 261 #define PF_ANEQ(a, b, c) \ 262 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \ 263 (c == AF_INET6 && \ 264 ((a)->addr32[3] != (b)->addr32[3] || \ 265 (a)->addr32[2] != (b)->addr32[2] || \ 266 (a)->addr32[1] != (b)->addr32[1] || \ 267 (a)->addr32[0] != (b)->addr32[0]))) \ 268 269 #define PF_AZERO(a, c) \ 270 ((c == AF_INET && !(a)->addr32[0]) || \ 271 (c == AF_INET6 && \ 272 !(a)->addr32[0] && !(a)->addr32[1] && \ 273 !(a)->addr32[2] && !(a)->addr32[3] )) \ 274 275 #define PF_MATCHA(n, a, m, b, f) \ 276 pf_match_addr(n, a, m, b, f) 277 278 #define PF_ACPY(a, b, f) \ 279 pf_addrcpy(a, b, f) 280 281 #define PF_AINC(a, f) \ 282 pf_addr_inc(a, f) 283 284 #define PF_POOLMASK(a, b, c, d, f) \ 285 pf_poolmask(a, b, c, d, f) 286 287 #else 288 289 /* Just IPv6 */ 290 291 #ifdef PF_INET6_ONLY 292 293 #define PF_AEQ(a, b, c) \ 294 ((a)->addr32[3] == (b)->addr32[3] && \ 295 (a)->addr32[2] == (b)->addr32[2] && \ 296 (a)->addr32[1] == (b)->addr32[1] && \ 297 (a)->addr32[0] == (b)->addr32[0]) \ 298 299 #define PF_ANEQ(a, b, c) \ 300 ((a)->addr32[3] != (b)->addr32[3] || \ 301 (a)->addr32[2] != (b)->addr32[2] || \ 302 (a)->addr32[1] != (b)->addr32[1] || \ 303 (a)->addr32[0] != (b)->addr32[0]) \ 304 305 #define PF_AZERO(a, c) \ 306 (!(a)->addr32[0] && \ 307 !(a)->addr32[1] && \ 308 !(a)->addr32[2] && \ 309 !(a)->addr32[3] ) \ 310 311 #define PF_MATCHA(n, a, m, b, f) \ 312 pf_match_addr(n, a, m, b, f) 313 314 #define PF_ACPY(a, b, f) \ 315 pf_addrcpy(a, b, f) 316 317 #define PF_AINC(a, f) \ 318 pf_addr_inc(a, f) 319 320 #define PF_POOLMASK(a, b, c, d, f) \ 321 pf_poolmask(a, b, c, d, f) 322 323 #else 324 325 /* Just IPv4 */ 326 #ifdef PF_INET_ONLY 327 328 #define PF_AEQ(a, b, c) \ 329 ((a)->addr32[0] == (b)->addr32[0]) 330 331 #define PF_ANEQ(a, b, c) \ 332 ((a)->addr32[0] != (b)->addr32[0]) 333 334 #define PF_AZERO(a, c) \ 335 (!(a)->addr32[0]) 336 337 #define PF_MATCHA(n, a, m, b, f) \ 338 pf_match_addr(n, a, m, b, f) 339 340 #define PF_ACPY(a, b, f) \ 341 (a)->v4.s_addr = (b)->v4.s_addr 342 343 #define PF_AINC(a, f) \ 344 do { \ 345 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \ 346 } while (0) 347 348 #define PF_POOLMASK(a, b, c, d, f) \ 349 do { \ 350 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \ 351 (((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \ 352 } while (0) 353 354 #endif /* PF_INET_ONLY */ 355 #endif /* PF_INET6_ONLY */ 356 #endif /* PF_INET_INET6 */ 357 358 #define PF_MISMATCHAW(aw, x, af, neg, ifp, rtid) \ 359 ( \ 360 (((aw)->type == PF_ADDR_NOROUTE && \ 361 pf_routable((x), (af), NULL, (rtid))) || \ 362 (((aw)->type == PF_ADDR_URPFFAILED && (ifp) != NULL && \ 363 pf_routable((x), (af), (ifp), (rtid))) || \ 364 ((aw)->type == PF_ADDR_RTLABEL && \ 365 !pf_rtlabel_match((x), (af), (aw), (rtid))) || \ 366 ((aw)->type == PF_ADDR_TABLE && \ 367 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \ 368 ((aw)->type == PF_ADDR_DYNIFTL && \ 369 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \ 370 ((aw)->type == PF_ADDR_RANGE && \ 371 !pf_match_addr_range(&(aw)->v.a.addr, \ 372 &(aw)->v.a.mask, (x), (af))) || \ 373 ((aw)->type == PF_ADDR_ADDRMASK && \ 374 !PF_AZERO(&(aw)->v.a.mask, (af)) && \ 375 !PF_MATCHA(0, &(aw)->v.a.addr, \ 376 &(aw)->v.a.mask, (x), (af))))) != \ 377 (neg) \ 378 ) 379 380 struct pf_rule_uid { 381 uid_t uid[2]; 382 u_int8_t op; 383 }; 384 385 struct pf_rule_gid { 386 uid_t gid[2]; 387 u_int8_t op; 388 }; 389 390 struct pf_rule_addr { 391 struct pf_addr_wrap addr; 392 u_int16_t port[2]; 393 u_int8_t neg; 394 u_int8_t port_op; 395 u_int16_t weight; 396 }; 397 398 struct pf_poolhashkey { 399 union { 400 u_int8_t key8[16]; 401 u_int16_t key16[8]; 402 u_int32_t key32[4]; 403 } pfk; /* 128-bit hash key */ 404 #define key8 pfk.key8 405 #define key16 pfk.key16 406 #define key32 pfk.key32 407 }; 408 409 struct pf_pool { 410 struct pf_addr_wrap addr; 411 struct pf_poolhashkey key; 412 struct pf_addr counter; 413 char ifname[IFNAMSIZ]; 414 struct pfi_kif *kif; 415 int tblidx; 416 u_int64_t states; 417 int curweight; 418 u_int16_t weight; 419 u_int16_t proxy_port[2]; 420 u_int8_t port_op; 421 u_int8_t opts; 422 }; 423 424 /* A packed Operating System description for fingerprinting */ 425 typedef u_int32_t pf_osfp_t; 426 #define PF_OSFP_ANY ((pf_osfp_t)0) 427 #define PF_OSFP_UNKNOWN ((pf_osfp_t)-1) 428 #define PF_OSFP_NOMATCH ((pf_osfp_t)-2) 429 430 struct pf_osfp_entry { 431 SLIST_ENTRY(pf_osfp_entry) fp_entry; 432 pf_osfp_t fp_os; 433 int fp_enflags; 434 #define PF_OSFP_EXPANDED 0x001 /* expanded entry */ 435 #define PF_OSFP_GENERIC 0x002 /* generic signature */ 436 #define PF_OSFP_NODETAIL 0x004 /* no p0f details */ 437 #define PF_OSFP_LEN 32 438 u_char fp_class_nm[PF_OSFP_LEN]; 439 u_char fp_version_nm[PF_OSFP_LEN]; 440 u_char fp_subtype_nm[PF_OSFP_LEN]; 441 }; 442 #define PF_OSFP_ENTRY_EQ(a, b) \ 443 ((a)->fp_os == (b)->fp_os && \ 444 memcmp((a)->fp_class_nm, (b)->fp_class_nm, PF_OSFP_LEN) == 0 && \ 445 memcmp((a)->fp_version_nm, (b)->fp_version_nm, PF_OSFP_LEN) == 0 && \ 446 memcmp((a)->fp_subtype_nm, (b)->fp_subtype_nm, PF_OSFP_LEN) == 0) 447 448 /* handle pf_osfp_t packing */ 449 #define _FP_RESERVED_BIT 1 /* For the special negative #defines */ 450 #define _FP_UNUSED_BITS 1 451 #define _FP_CLASS_BITS 10 /* OS Class (Windows, Linux) */ 452 #define _FP_VERSION_BITS 10 /* OS version (95, 98, NT, 2.4.54, 3.2) */ 453 #define _FP_SUBTYPE_BITS 10 /* patch level (NT SP4, SP3, ECN patch) */ 454 #define PF_OSFP_UNPACK(osfp, class, version, subtype) do { \ 455 (class) = ((osfp) >> (_FP_VERSION_BITS+_FP_SUBTYPE_BITS)) & \ 456 ((1 << _FP_CLASS_BITS) - 1); \ 457 (version) = ((osfp) >> _FP_SUBTYPE_BITS) & \ 458 ((1 << _FP_VERSION_BITS) - 1);\ 459 (subtype) = (osfp) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 460 } while(0) 461 #define PF_OSFP_PACK(osfp, class, version, subtype) do { \ 462 (osfp) = ((class) & ((1 << _FP_CLASS_BITS) - 1)) << (_FP_VERSION_BITS \ 463 + _FP_SUBTYPE_BITS); \ 464 (osfp) |= ((version) & ((1 << _FP_VERSION_BITS) - 1)) << \ 465 _FP_SUBTYPE_BITS; \ 466 (osfp) |= (subtype) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 467 } while(0) 468 469 /* the fingerprint of an OSes TCP SYN packet */ 470 typedef u_int64_t pf_tcpopts_t; 471 struct pf_os_fingerprint { 472 SLIST_HEAD(pf_osfp_enlist, pf_osfp_entry) fp_oses; /* list of matches */ 473 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 474 u_int16_t fp_wsize; /* TCP window size */ 475 u_int16_t fp_psize; /* ip->ip_len */ 476 u_int16_t fp_mss; /* TCP MSS */ 477 u_int16_t fp_flags; 478 #define PF_OSFP_WSIZE_MOD 0x0001 /* Window modulus */ 479 #define PF_OSFP_WSIZE_DC 0x0002 /* Window don't care */ 480 #define PF_OSFP_WSIZE_MSS 0x0004 /* Window multiple of MSS */ 481 #define PF_OSFP_WSIZE_MTU 0x0008 /* Window multiple of MTU */ 482 #define PF_OSFP_PSIZE_MOD 0x0010 /* packet size modulus */ 483 #define PF_OSFP_PSIZE_DC 0x0020 /* packet size don't care */ 484 #define PF_OSFP_WSCALE 0x0040 /* TCP window scaling */ 485 #define PF_OSFP_WSCALE_MOD 0x0080 /* TCP window scale modulus */ 486 #define PF_OSFP_WSCALE_DC 0x0100 /* TCP window scale dont-care */ 487 #define PF_OSFP_MSS 0x0200 /* TCP MSS */ 488 #define PF_OSFP_MSS_MOD 0x0400 /* TCP MSS modulus */ 489 #define PF_OSFP_MSS_DC 0x0800 /* TCP MSS dont-care */ 490 #define PF_OSFP_DF 0x1000 /* IPv4 don't fragment bit */ 491 #define PF_OSFP_TS0 0x2000 /* Zero timestamp */ 492 #define PF_OSFP_INET6 0x4000 /* IPv6 */ 493 u_int8_t fp_optcnt; /* TCP option count */ 494 u_int8_t fp_wscale; /* TCP window scaling */ 495 u_int8_t fp_ttl; /* IPv4 TTL */ 496 #define PF_OSFP_MAXTTL_OFFSET 40 497 /* TCP options packing */ 498 #define PF_OSFP_TCPOPT_NOP 0x0 /* TCP NOP option */ 499 #define PF_OSFP_TCPOPT_WSCALE 0x1 /* TCP window scaling option */ 500 #define PF_OSFP_TCPOPT_MSS 0x2 /* TCP max segment size opt */ 501 #define PF_OSFP_TCPOPT_SACK 0x3 /* TCP SACK OK option */ 502 #define PF_OSFP_TCPOPT_TS 0x4 /* TCP timestamp option */ 503 #define PF_OSFP_TCPOPT_BITS 3 /* bits used by each option */ 504 #define PF_OSFP_MAX_OPTS \ 505 (sizeof(((struct pf_os_fingerprint *)0)->fp_tcpopts) * 8) \ 506 / PF_OSFP_TCPOPT_BITS 507 508 SLIST_ENTRY(pf_os_fingerprint) fp_next; 509 }; 510 511 struct pf_osfp_ioctl { 512 struct pf_osfp_entry fp_os; 513 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 514 u_int16_t fp_wsize; /* TCP window size */ 515 u_int16_t fp_psize; /* ip->ip_len */ 516 u_int16_t fp_mss; /* TCP MSS */ 517 u_int16_t fp_flags; 518 u_int8_t fp_optcnt; /* TCP option count */ 519 u_int8_t fp_wscale; /* TCP window scaling */ 520 u_int8_t fp_ttl; /* IPv4 TTL */ 521 522 int fp_getnum; /* DIOCOSFPGET number */ 523 }; 524 525 struct pf_rule_actions { 526 int rtableid; 527 u_int16_t qid; 528 u_int16_t pqid; 529 u_int16_t max_mss; 530 u_int16_t flags; 531 u_int8_t log; 532 u_int8_t set_tos; 533 u_int8_t min_ttl; 534 u_int8_t set_prio[2]; 535 u_int8_t pad[3]; 536 }; 537 538 union pf_rule_ptr { 539 struct pf_rule *ptr; 540 u_int32_t nr; 541 }; 542 543 #define PF_ANCHOR_NAME_SIZE 64 544 545 struct pf_rule { 546 struct pf_rule_addr src; 547 struct pf_rule_addr dst; 548 #define PF_SKIP_IFP 0 549 #define PF_SKIP_DIR 1 550 #define PF_SKIP_RDOM 2 551 #define PF_SKIP_AF 3 552 #define PF_SKIP_PROTO 4 553 #define PF_SKIP_SRC_ADDR 5 554 #define PF_SKIP_DST_ADDR 6 555 #define PF_SKIP_SRC_PORT 7 556 #define PF_SKIP_DST_PORT 8 557 #define PF_SKIP_COUNT 9 558 union pf_rule_ptr skip[PF_SKIP_COUNT]; 559 #define PF_RULE_LABEL_SIZE 64 560 char label[PF_RULE_LABEL_SIZE]; 561 #define PF_QNAME_SIZE 64 562 char ifname[IFNAMSIZ]; 563 char rcv_ifname[IFNAMSIZ]; 564 char qname[PF_QNAME_SIZE]; 565 char pqname[PF_QNAME_SIZE]; 566 #define PF_TAG_NAME_SIZE 64 567 char tagname[PF_TAG_NAME_SIZE]; 568 char match_tagname[PF_TAG_NAME_SIZE]; 569 570 char overload_tblname[PF_TABLE_NAME_SIZE]; 571 572 TAILQ_ENTRY(pf_rule) entries; 573 struct pf_pool nat; 574 struct pf_pool rdr; 575 struct pf_pool route; 576 577 u_int64_t evaluations; 578 u_int64_t packets[2]; 579 u_int64_t bytes[2]; 580 581 struct pfi_kif *kif; 582 struct pfi_kif *rcv_kif; 583 struct pf_anchor *anchor; 584 struct pfr_ktable *overload_tbl; 585 586 pf_osfp_t os_fingerprint; 587 588 int rtableid; 589 int onrdomain; 590 u_int32_t timeout[PFTM_MAX]; 591 u_int32_t states_cur; 592 u_int32_t states_tot; 593 u_int32_t max_states; 594 u_int32_t src_nodes; 595 u_int32_t max_src_nodes; 596 u_int32_t max_src_states; 597 u_int32_t max_src_conn; 598 struct { 599 u_int32_t limit; 600 u_int32_t seconds; 601 } max_src_conn_rate; 602 u_int32_t qid; 603 u_int32_t pqid; 604 u_int32_t rt_listid; 605 u_int32_t nr; 606 u_int32_t prob; 607 uid_t cuid; 608 pid_t cpid; 609 610 u_int16_t return_icmp; 611 u_int16_t return_icmp6; 612 u_int16_t max_mss; 613 u_int16_t tag; 614 u_int16_t match_tag; 615 u_int16_t scrub_flags; 616 617 struct pf_rule_uid uid; 618 struct pf_rule_gid gid; 619 620 u_int32_t rule_flag; 621 u_int8_t action; 622 u_int8_t direction; 623 u_int8_t log; 624 u_int8_t logif; 625 u_int8_t quick; 626 u_int8_t ifnot; 627 u_int8_t match_tag_not; 628 629 #define PF_STATE_NORMAL 0x1 630 #define PF_STATE_MODULATE 0x2 631 #define PF_STATE_SYNPROXY 0x3 632 u_int8_t keep_state; 633 sa_family_t af; 634 u_int8_t proto; 635 u_int8_t type; 636 u_int8_t code; 637 u_int8_t flags; 638 u_int8_t flagset; 639 u_int8_t min_ttl; 640 u_int8_t allow_opts; 641 u_int8_t rt; 642 u_int8_t return_ttl; 643 u_int8_t tos; 644 u_int8_t set_tos; 645 u_int8_t anchor_relative; 646 u_int8_t anchor_wildcard; 647 648 #define PF_FLUSH 0x01 649 #define PF_FLUSH_GLOBAL 0x02 650 u_int8_t flush; 651 u_int8_t set_prio[2]; 652 sa_family_t naf; 653 u_int8_t rcvifnot; 654 u_int8_t pad[3]; 655 656 struct { 657 struct pf_addr addr; 658 u_int16_t port; 659 } divert, divert_packet; 660 }; 661 662 /* rule flags */ 663 #define PFRULE_DROP 0x0000 664 #define PFRULE_RETURNRST 0x0001 665 #define PFRULE_FRAGMENT 0x0002 666 #define PFRULE_RETURNICMP 0x0004 667 #define PFRULE_RETURN 0x0008 668 #define PFRULE_NOSYNC 0x0010 669 #define PFRULE_SRCTRACK 0x0020 /* track source states */ 670 #define PFRULE_RULESRCTRACK 0x0040 /* per rule */ 671 672 /* rule flags again */ 673 #define PFRULE_IFBOUND 0x00010000 /* if-bound */ 674 #define PFRULE_STATESLOPPY 0x00020000 /* sloppy state tracking */ 675 #define PFRULE_PFLOW 0x00040000 676 #define PFRULE_ONCE 0x00100000 /* one shot rule */ 677 #define PFRULE_AFTO 0x00200000 /* af-to rule */ 678 679 #define PFSTATE_HIWAT 10000 /* default state table size */ 680 #define PFSTATE_ADAPT_START 6000 /* default adaptive timeout start */ 681 #define PFSTATE_ADAPT_END 12000 /* default adaptive timeout end */ 682 683 684 struct pf_threshold { 685 u_int32_t limit; 686 #define PF_THRESHOLD_MULT 1000 687 #define PF_THRESHOLD_MAX 0xffffffff / PF_THRESHOLD_MULT 688 u_int32_t seconds; 689 u_int32_t count; 690 u_int32_t last; 691 }; 692 693 struct pf_rule_item { 694 SLIST_ENTRY(pf_rule_item) entry; 695 struct pf_rule *r; 696 }; 697 698 SLIST_HEAD(pf_rule_slist, pf_rule_item); 699 700 enum pf_sn_types { PF_SN_NONE, PF_SN_NAT, PF_SN_RDR, PF_SN_ROUTE, PF_SN_MAX }; 701 702 struct pf_src_node { 703 RB_ENTRY(pf_src_node) entry; 704 struct pf_addr addr; 705 struct pf_addr raddr; 706 union pf_rule_ptr rule; 707 struct pfi_kif *kif; 708 u_int64_t bytes[2]; 709 u_int64_t packets[2]; 710 u_int32_t states; 711 u_int32_t conn; 712 struct pf_threshold conn_rate; 713 int32_t creation; 714 int32_t expire; 715 sa_family_t af; 716 sa_family_t naf; 717 u_int8_t type; 718 }; 719 720 struct pf_sn_item { 721 SLIST_ENTRY(pf_sn_item) next; 722 struct pf_src_node *sn; 723 }; 724 725 SLIST_HEAD(pf_sn_head, pf_sn_item); 726 727 #define PFSNODE_HIWAT 10000 /* default source node table size */ 728 729 struct pf_state_scrub { 730 struct timeval pfss_last; /* time received last packet */ 731 u_int32_t pfss_tsecr; /* last echoed timestamp */ 732 u_int32_t pfss_tsval; /* largest timestamp */ 733 u_int32_t pfss_tsval0; /* original timestamp */ 734 u_int16_t pfss_flags; 735 #define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */ 736 #define PFSS_PAWS 0x0010 /* stricter PAWS checks */ 737 #define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */ 738 #define PFSS_DATA_TS 0x0040 /* timestamp on data packets */ 739 #define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */ 740 u_int8_t pfss_ttl; /* stashed TTL */ 741 u_int8_t pad; 742 u_int32_t pfss_ts_mod; /* timestamp modulation */ 743 }; 744 745 struct pf_state_host { 746 struct pf_addr addr; 747 u_int16_t port; 748 u_int16_t pad; 749 }; 750 751 struct pf_state_peer { 752 struct pf_state_scrub *scrub; /* state is scrubbed */ 753 u_int32_t seqlo; /* Max sequence number sent */ 754 u_int32_t seqhi; /* Max the other end ACKd + win */ 755 u_int32_t seqdiff; /* Sequence number modulator */ 756 u_int16_t max_win; /* largest window (pre scaling) */ 757 u_int16_t mss; /* Maximum segment size option */ 758 u_int8_t state; /* active state level */ 759 u_int8_t wscale; /* window scaling factor */ 760 u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */ 761 u_int8_t pad[1]; 762 }; 763 764 TAILQ_HEAD(pf_state_queue, pf_state); 765 766 /* keep synced with struct pf_state_key, used in RB_FIND */ 767 struct pf_state_key_cmp { 768 struct pf_addr addr[2]; 769 u_int16_t port[2]; 770 u_int16_t rdomain; 771 sa_family_t af; 772 u_int8_t proto; 773 }; 774 775 struct pf_state_item { 776 TAILQ_ENTRY(pf_state_item) entry; 777 struct pf_state *s; 778 }; 779 780 TAILQ_HEAD(pf_statelisthead, pf_state_item); 781 782 struct pf_state_key { 783 struct pf_addr addr[2]; 784 u_int16_t port[2]; 785 u_int16_t rdomain; 786 sa_family_t af; 787 u_int8_t proto; 788 789 RB_ENTRY(pf_state_key) entry; 790 struct pf_statelisthead states; 791 struct pf_state_key *reverse; 792 struct inpcb *inp; 793 }; 794 #define PF_REVERSED_KEY(key, family) \ 795 ((key[PF_SK_WIRE]->af != key[PF_SK_STACK]->af) && \ 796 (key[PF_SK_WIRE]->af != (family))) 797 798 /* keep synced with struct pf_state, used in RB_FIND */ 799 struct pf_state_cmp { 800 u_int64_t id; 801 u_int32_t creatorid; 802 u_int8_t direction; 803 u_int8_t pad[3]; 804 }; 805 806 struct pf_state { 807 u_int64_t id; 808 u_int32_t creatorid; 809 u_int8_t direction; 810 u_int8_t pad[3]; 811 812 TAILQ_ENTRY(pf_state) sync_list; 813 TAILQ_ENTRY(pf_state) entry_list; 814 RB_ENTRY(pf_state) entry_id; 815 struct pf_state_peer src; 816 struct pf_state_peer dst; 817 struct pf_rule_slist match_rules; 818 union pf_rule_ptr rule; 819 union pf_rule_ptr anchor; 820 union pf_rule_ptr natrule; 821 struct pf_addr rt_addr; 822 struct pf_sn_head src_nodes; 823 struct pf_state_key *key[2]; /* addresses stack and wire */ 824 struct pfi_kif *kif; 825 struct pfi_kif *rt_kif; 826 u_int64_t packets[2]; 827 u_int64_t bytes[2]; 828 int32_t creation; 829 int32_t expire; 830 int32_t pfsync_time; 831 u_int16_t qid; 832 u_int16_t pqid; 833 u_int16_t tag; 834 u_int16_t state_flags; 835 #define PFSTATE_ALLOWOPTS 0x0001 836 #define PFSTATE_SLOPPY 0x0002 837 #define PFSTATE_PFLOW 0x0004 838 #define PFSTATE_NOSYNC 0x0008 839 #define PFSTATE_ACK 0x0010 840 #define PFSTATE_NODF 0x0020 841 #define PFSTATE_SETTOS 0x0040 842 #define PFSTATE_RANDOMID 0x0080 843 #define PFSTATE_SCRUB_TCP 0x0100 844 #define PFSTATE_SETPRIO 0x0200 845 #define PFSTATE_SCRUBMASK (PFSTATE_NODF|PFSTATE_RANDOMID|PFSTATE_SCRUB_TCP) 846 #define PFSTATE_SETMASK (PFSTATE_SETTOS|PFSTATE_SETPRIO) 847 u_int8_t log; 848 u_int8_t timeout; 849 u_int8_t sync_state; /* PFSYNC_S_x */ 850 u_int8_t sync_updates; 851 int rtableid[2]; /* rtables stack and wire */ 852 u_int8_t min_ttl; 853 u_int8_t set_tos; 854 u_int8_t set_prio[2]; 855 u_int16_t max_mss; 856 u_int16_t if_index_in; 857 u_int16_t if_index_out; 858 u_int8_t pad2[2]; 859 }; 860 861 /* 862 * Unified state structures for pulling states out of the kernel 863 * used by pfsync(4) and the pf(4) ioctl. 864 */ 865 struct pfsync_state_scrub { 866 u_int16_t pfss_flags; 867 u_int8_t pfss_ttl; /* stashed TTL */ 868 #define PFSYNC_SCRUB_FLAG_VALID 0x01 869 u_int8_t scrub_flag; 870 u_int32_t pfss_ts_mod; /* timestamp modulation */ 871 } __packed; 872 873 struct pfsync_state_peer { 874 struct pfsync_state_scrub scrub; /* state is scrubbed */ 875 u_int32_t seqlo; /* Max sequence number sent */ 876 u_int32_t seqhi; /* Max the other end ACKd + win */ 877 u_int32_t seqdiff; /* Sequence number modulator */ 878 u_int16_t max_win; /* largest window (pre scaling) */ 879 u_int16_t mss; /* Maximum segment size option */ 880 u_int8_t state; /* active state level */ 881 u_int8_t wscale; /* window scaling factor */ 882 u_int8_t pad[6]; 883 } __packed; 884 885 struct pfsync_state_key { 886 struct pf_addr addr[2]; 887 u_int16_t port[2]; 888 u_int16_t rdomain; 889 sa_family_t af; 890 u_int8_t pad; 891 }; 892 893 struct pfsync_state { 894 u_int64_t id; 895 char ifname[IFNAMSIZ]; 896 struct pfsync_state_key key[2]; 897 struct pfsync_state_peer src; 898 struct pfsync_state_peer dst; 899 struct pf_addr rt_addr; 900 u_int32_t rule; 901 u_int32_t anchor; 902 u_int32_t nat_rule; 903 u_int32_t creation; 904 u_int32_t expire; 905 u_int32_t packets[2][2]; 906 u_int32_t bytes[2][2]; 907 u_int32_t creatorid; 908 int32_t rtableid[2]; 909 u_int16_t max_mss; 910 sa_family_t af; 911 u_int8_t proto; 912 u_int8_t direction; 913 u_int8_t log; 914 u_int8_t pad0; 915 u_int8_t timeout; 916 u_int8_t sync_flags; 917 u_int8_t updates; 918 u_int8_t min_ttl; 919 u_int8_t set_tos; 920 u_int16_t state_flags; 921 u_int8_t pad[2]; 922 } __packed; 923 924 #define PFSYNC_FLAG_SRCNODE 0x04 925 #define PFSYNC_FLAG_NATSRCNODE 0x08 926 927 /* for copies to/from network byte order */ 928 /* ioctl interface also uses network byte order */ 929 #define pf_state_peer_hton(s,d) do { \ 930 (d)->seqlo = htonl((s)->seqlo); \ 931 (d)->seqhi = htonl((s)->seqhi); \ 932 (d)->seqdiff = htonl((s)->seqdiff); \ 933 (d)->max_win = htons((s)->max_win); \ 934 (d)->mss = htons((s)->mss); \ 935 (d)->state = (s)->state; \ 936 (d)->wscale = (s)->wscale; \ 937 if ((s)->scrub) { \ 938 (d)->scrub.pfss_flags = \ 939 htons((s)->scrub->pfss_flags & PFSS_TIMESTAMP); \ 940 (d)->scrub.pfss_ttl = (s)->scrub->pfss_ttl; \ 941 (d)->scrub.pfss_ts_mod = htonl((s)->scrub->pfss_ts_mod);\ 942 (d)->scrub.scrub_flag = PFSYNC_SCRUB_FLAG_VALID; \ 943 } \ 944 } while (0) 945 946 #define pf_state_peer_ntoh(s,d) do { \ 947 (d)->seqlo = ntohl((s)->seqlo); \ 948 (d)->seqhi = ntohl((s)->seqhi); \ 949 (d)->seqdiff = ntohl((s)->seqdiff); \ 950 (d)->max_win = ntohs((s)->max_win); \ 951 (d)->mss = ntohs((s)->mss); \ 952 (d)->state = (s)->state; \ 953 (d)->wscale = (s)->wscale; \ 954 if ((s)->scrub.scrub_flag == PFSYNC_SCRUB_FLAG_VALID && \ 955 (d)->scrub != NULL) { \ 956 (d)->scrub->pfss_flags = \ 957 ntohs((s)->scrub.pfss_flags) & PFSS_TIMESTAMP; \ 958 (d)->scrub->pfss_ttl = (s)->scrub.pfss_ttl; \ 959 (d)->scrub->pfss_ts_mod = ntohl((s)->scrub.pfss_ts_mod);\ 960 } \ 961 } while (0) 962 963 #define pf_state_counter_hton(s,d) do { \ 964 d[0] = htonl((s>>32)&0xffffffff); \ 965 d[1] = htonl(s&0xffffffff); \ 966 } while (0) 967 968 #define pf_state_counter_from_pfsync(s) \ 969 (((u_int64_t)(s[0])<<32) | (u_int64_t)(s[1])) 970 971 #define pf_state_counter_ntoh(s,d) do { \ 972 d = ntohl(s[0]); \ 973 d = d<<32; \ 974 d += ntohl(s[1]); \ 975 } while (0) 976 977 TAILQ_HEAD(pf_rulequeue, pf_rule); 978 979 struct pf_anchor; 980 981 struct pf_ruleset { 982 struct { 983 struct pf_rulequeue queues[2]; 984 struct { 985 struct pf_rulequeue *ptr; 986 struct pf_rule **ptr_array; 987 u_int32_t rcount; 988 u_int32_t ticket; 989 int open; 990 } active, inactive; 991 } rules; 992 struct pf_anchor *anchor; 993 u_int32_t tticket; 994 int tables; 995 int topen; 996 }; 997 998 RB_HEAD(pf_anchor_global, pf_anchor); 999 RB_HEAD(pf_anchor_node, pf_anchor); 1000 struct pf_anchor { 1001 RB_ENTRY(pf_anchor) entry_global; 1002 RB_ENTRY(pf_anchor) entry_node; 1003 struct pf_anchor *parent; 1004 struct pf_anchor_node children; 1005 char name[PF_ANCHOR_NAME_SIZE]; 1006 char path[MAXPATHLEN]; 1007 struct pf_ruleset ruleset; 1008 int refcnt; /* anchor rules */ 1009 int match; 1010 }; 1011 RB_PROTOTYPE(pf_anchor_global, pf_anchor, entry_global, pf_anchor_compare); 1012 RB_PROTOTYPE(pf_anchor_node, pf_anchor, entry_node, pf_anchor_compare); 1013 1014 #define PF_RESERVED_ANCHOR "_pf" 1015 1016 #define PFR_TFLAG_PERSIST 0x00000001 1017 #define PFR_TFLAG_CONST 0x00000002 1018 #define PFR_TFLAG_ACTIVE 0x00000004 1019 #define PFR_TFLAG_INACTIVE 0x00000008 1020 #define PFR_TFLAG_REFERENCED 0x00000010 1021 #define PFR_TFLAG_REFDANCHOR 0x00000020 1022 #define PFR_TFLAG_COUNTERS 0x00000040 1023 /* Adjust masks below when adding flags. */ 1024 #define PFR_TFLAG_USRMASK 0x00000043 1025 #define PFR_TFLAG_SETMASK 0x0000003C 1026 #define PFR_TFLAG_ALLMASK 0x0000007F 1027 1028 struct pfr_table { 1029 char pfrt_anchor[MAXPATHLEN]; 1030 char pfrt_name[PF_TABLE_NAME_SIZE]; 1031 u_int32_t pfrt_flags; 1032 u_int8_t pfrt_fback; 1033 }; 1034 1035 enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED, 1036 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE, 1037 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_NOCOUNT, PFR_FB_MAX }; 1038 1039 struct pfr_addr { 1040 union { 1041 struct in_addr _pfra_ip4addr; 1042 struct in6_addr _pfra_ip6addr; 1043 } pfra_u; 1044 char pfra_ifname[IFNAMSIZ]; 1045 u_int32_t pfra_states; 1046 u_int16_t pfra_weight; 1047 u_int8_t pfra_af; 1048 u_int8_t pfra_net; 1049 u_int8_t pfra_not; 1050 u_int8_t pfra_fback; 1051 u_int8_t pfra_type; 1052 u_int8_t pad[7]; 1053 }; 1054 #define pfra_ip4addr pfra_u._pfra_ip4addr 1055 #define pfra_ip6addr pfra_u._pfra_ip6addr 1056 1057 enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX }; 1058 enum { PFR_OP_BLOCK, PFR_OP_MATCH, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX }; 1059 #define PFR_OP_XPASS PFR_OP_ADDR_MAX 1060 1061 struct pfr_astats { 1062 struct pfr_addr pfras_a; 1063 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1064 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1065 time_t pfras_tzero; 1066 }; 1067 1068 enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX }; 1069 1070 struct pfr_tstats { 1071 struct pfr_table pfrts_t; 1072 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1073 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1074 u_int64_t pfrts_match; 1075 u_int64_t pfrts_nomatch; 1076 time_t pfrts_tzero; 1077 int pfrts_cnt; 1078 int pfrts_refcnt[PFR_REFCNT_MAX]; 1079 }; 1080 #define pfrts_name pfrts_t.pfrt_name 1081 #define pfrts_flags pfrts_t.pfrt_flags 1082 1083 struct pfr_kcounters { 1084 u_int64_t pfrkc_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1085 u_int64_t pfrkc_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1086 u_int64_t states; 1087 }; 1088 1089 SLIST_HEAD(pfr_kentryworkq, pfr_kentry); 1090 struct _pfr_kentry { 1091 struct radix_node _pfrke_node[2]; 1092 union sockaddr_union _pfrke_sa; 1093 SLIST_ENTRY(pfr_kentry) _pfrke_workq; 1094 struct pfr_kcounters *_pfrke_counters; 1095 time_t _pfrke_tzero; 1096 u_int8_t _pfrke_af; 1097 u_int8_t _pfrke_net; 1098 u_int8_t _pfrke_flags; 1099 u_int8_t _pfrke_type; 1100 }; 1101 #define PFRKE_FLAG_NOT 0x01 1102 #define PFRKE_FLAG_MARK 0x02 1103 1104 /* pfrke_type */ 1105 enum { PFRKE_PLAIN, PFRKE_ROUTE, PFRKE_COST, PFRKE_MAX }; 1106 1107 struct pfr_kentry { 1108 union { 1109 struct _pfr_kentry _ke; 1110 } u; 1111 }; 1112 #define pfrke_node u._ke._pfrke_node 1113 #define pfrke_sa u._ke._pfrke_sa 1114 #define pfrke_workq u._ke._pfrke_workq 1115 #define pfrke_counters u._ke._pfrke_counters 1116 #define pfrke_tzero u._ke._pfrke_tzero 1117 #define pfrke_af u._ke._pfrke_af 1118 #define pfrke_net u._ke._pfrke_net 1119 #define pfrke_flags u._ke._pfrke_flags 1120 #define pfrke_type u._ke._pfrke_type 1121 1122 struct pfr_kentry_route { 1123 union { 1124 struct _pfr_kentry _ke; 1125 } u; 1126 1127 struct pfi_kif *kif; 1128 }; 1129 1130 struct pfr_kentry_cost { 1131 union { 1132 struct _pfr_kentry _ke; 1133 } u; 1134 1135 struct pfi_kif *kif; 1136 /* Above overlaps with pfr_kentry route */ 1137 1138 u_int16_t weight; 1139 }; 1140 1141 struct pfr_kentry_all { 1142 union { 1143 struct _pfr_kentry _ke; 1144 struct pfr_kentry_route kr; 1145 struct pfr_kentry_cost kc; 1146 } u; 1147 }; 1148 #define pfrke_rkif u.kr.kif 1149 1150 SLIST_HEAD(pfr_ktableworkq, pfr_ktable); 1151 RB_HEAD(pfr_ktablehead, pfr_ktable); 1152 struct pfr_ktable { 1153 struct pfr_tstats pfrkt_ts; 1154 RB_ENTRY(pfr_ktable) pfrkt_tree; 1155 SLIST_ENTRY(pfr_ktable) pfrkt_workq; 1156 struct radix_node_head *pfrkt_ip4; 1157 struct radix_node_head *pfrkt_ip6; 1158 struct pfr_ktable *pfrkt_shadow; 1159 struct pfr_ktable *pfrkt_root; 1160 struct pf_ruleset *pfrkt_rs; 1161 long pfrkt_larg; 1162 int pfrkt_nflags; 1163 u_int64_t pfrkt_refcntcost; 1164 u_int16_t pfrkt_gcdweight; 1165 u_int16_t pfrkt_maxweight; 1166 }; 1167 #define pfrkt_t pfrkt_ts.pfrts_t 1168 #define pfrkt_name pfrkt_t.pfrt_name 1169 #define pfrkt_anchor pfrkt_t.pfrt_anchor 1170 #define pfrkt_ruleset pfrkt_t.pfrt_ruleset 1171 #define pfrkt_flags pfrkt_t.pfrt_flags 1172 #define pfrkt_cnt pfrkt_ts.pfrts_cnt 1173 #define pfrkt_refcnt pfrkt_ts.pfrts_refcnt 1174 #define pfrkt_packets pfrkt_ts.pfrts_packets 1175 #define pfrkt_bytes pfrkt_ts.pfrts_bytes 1176 #define pfrkt_match pfrkt_ts.pfrts_match 1177 #define pfrkt_nomatch pfrkt_ts.pfrts_nomatch 1178 #define pfrkt_tzero pfrkt_ts.pfrts_tzero 1179 1180 RB_HEAD(pf_state_tree, pf_state_key); 1181 RB_PROTOTYPE(pf_state_tree, pf_state_key, entry, pf_state_compare_key); 1182 1183 RB_HEAD(pf_state_tree_ext_gwy, pf_state_key); 1184 RB_PROTOTYPE(pf_state_tree_ext_gwy, pf_state_key, 1185 entry_ext_gwy, pf_state_compare_ext_gwy); 1186 1187 RB_HEAD(pfi_ifhead, pfi_kif); 1188 1189 /* state tables */ 1190 extern struct pf_state_tree pf_statetbl; 1191 1192 /* keep synced with pfi_kif, used in RB_FIND */ 1193 struct pfi_kif_cmp { 1194 char pfik_name[IFNAMSIZ]; 1195 }; 1196 1197 struct ifnet; 1198 struct ifg_group; 1199 1200 struct pfi_kif { 1201 char pfik_name[IFNAMSIZ]; 1202 RB_ENTRY(pfi_kif) pfik_tree; 1203 u_int64_t pfik_packets[2][2][2]; 1204 u_int64_t pfik_bytes[2][2][2]; 1205 time_t pfik_tzero; 1206 int pfik_flags; 1207 int pfik_flags_new; 1208 void *pfik_ah_cookie; 1209 struct ifnet *pfik_ifp; 1210 struct ifg_group *pfik_group; 1211 int pfik_states; 1212 int pfik_rules; 1213 int pfik_routes; 1214 TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs; 1215 }; 1216 1217 enum pfi_kif_refs { 1218 PFI_KIF_REF_NONE, 1219 PFI_KIF_REF_STATE, 1220 PFI_KIF_REF_RULE, 1221 PFI_KIF_REF_ROUTE 1222 }; 1223 1224 #define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */ 1225 #define PFI_IFLAG_ANY 0x0200 /* match any non-loopback interface */ 1226 1227 struct pf_pdesc { 1228 struct { 1229 int done; 1230 uid_t uid; 1231 gid_t gid; 1232 pid_t pid; 1233 } lookup; 1234 u_int64_t tot_len; /* Make Mickey money */ 1235 union { 1236 struct tcphdr *tcp; 1237 struct udphdr *udp; 1238 struct icmp *icmp; 1239 #ifdef INET6 1240 struct icmp6_hdr *icmp6; 1241 #endif /* INET6 */ 1242 void *any; 1243 } hdr; 1244 1245 struct pf_addr nsaddr; /* src address after NAT */ 1246 struct pf_addr ndaddr; /* dst address after NAT */ 1247 1248 struct pfi_kif *kif; /* incoming interface */ 1249 struct mbuf *m; /* mbuf containing the packet */ 1250 struct ether_header 1251 *eh; 1252 struct pf_addr *src; /* src address */ 1253 struct pf_addr *dst; /* dst address */ 1254 u_int16_t *pcksum; /* proto cksum */ 1255 u_int16_t *sport; 1256 u_int16_t *dport; 1257 u_int16_t osport; 1258 u_int16_t odport; 1259 u_int16_t nsport; /* src port after NAT */ 1260 u_int16_t ndport; /* dst port after NAT */ 1261 1262 u_int32_t off; /* protocol header offset */ 1263 u_int32_t hdrlen; /* protocol header length */ 1264 u_int32_t p_len; /* length of protocol payload */ 1265 u_int32_t extoff; /* extentsion header offset */ 1266 u_int32_t fragoff; /* fragment header offset */ 1267 u_int32_t jumbolen; /* length from v6 jumbo header */ 1268 u_int32_t badopts; /* v4 options or v6 routing headers */ 1269 1270 u_int16_t rdomain; /* original routing domain */ 1271 u_int16_t virtual_proto; 1272 #define PF_VPROTO_FRAGMENT 256 1273 sa_family_t af; 1274 sa_family_t naf; 1275 u_int8_t proto; 1276 u_int8_t tos; 1277 u_int8_t ttl; 1278 u_int8_t dir; /* direction */ 1279 u_int8_t sidx; /* key index for source */ 1280 u_int8_t didx; /* key index for destination */ 1281 u_int8_t destchg; /* flag set when destination changed */ 1282 u_int8_t pflog; /* flags for packet logging */ 1283 u_int8_t csum_status; /* proto cksum ok/bad/unchecked */ 1284 #define PF_CSUM_UNKNOWN 0 1285 #define PF_CSUM_BAD 1 1286 #define PF_CSUM_OK 2 1287 }; 1288 1289 1290 /* flags for RDR options */ 1291 #define PF_DPORT_RANGE 0x01 /* Dest port uses range */ 1292 #define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */ 1293 1294 /* Reasons code for passing/dropping a packet */ 1295 #define PFRES_MATCH 0 /* Explicit match of a rule */ 1296 #define PFRES_BADOFF 1 /* Bad offset for pull_hdr */ 1297 #define PFRES_FRAG 2 /* Dropping following fragment */ 1298 #define PFRES_SHORT 3 /* Dropping short packet */ 1299 #define PFRES_NORM 4 /* Dropping by normalizer */ 1300 #define PFRES_MEMORY 5 /* Dropped due to lacking mem */ 1301 #define PFRES_TS 6 /* Bad TCP Timestamp (RFC1323) */ 1302 #define PFRES_CONGEST 7 /* Congestion (of ipintrq) */ 1303 #define PFRES_IPOPTIONS 8 /* IP option */ 1304 #define PFRES_PROTCKSUM 9 /* Protocol checksum invalid */ 1305 #define PFRES_BADSTATE 10 /* State mismatch */ 1306 #define PFRES_STATEINS 11 /* State insertion failure */ 1307 #define PFRES_MAXSTATES 12 /* State limit */ 1308 #define PFRES_SRCLIMIT 13 /* Source node/conn limit */ 1309 #define PFRES_SYNPROXY 14 /* SYN proxy */ 1310 #define PFRES_TRANSLATE 15 /* No translation address available */ 1311 #define PFRES_MAX 16 /* total+1 */ 1312 1313 #define PFRES_NAMES { \ 1314 "match", \ 1315 "bad-offset", \ 1316 "fragment", \ 1317 "short", \ 1318 "normalize", \ 1319 "memory", \ 1320 "bad-timestamp", \ 1321 "congestion", \ 1322 "ip-option", \ 1323 "proto-cksum", \ 1324 "state-mismatch", \ 1325 "state-insert", \ 1326 "state-limit", \ 1327 "src-limit", \ 1328 "synproxy", \ 1329 "translate", \ 1330 NULL \ 1331 } 1332 1333 /* Counters for other things we want to keep track of */ 1334 #define LCNT_STATES 0 /* states */ 1335 #define LCNT_SRCSTATES 1 /* max-src-states */ 1336 #define LCNT_SRCNODES 2 /* max-src-nodes */ 1337 #define LCNT_SRCCONN 3 /* max-src-conn */ 1338 #define LCNT_SRCCONNRATE 4 /* max-src-conn-rate */ 1339 #define LCNT_OVERLOAD_TABLE 5 /* entry added to overload table */ 1340 #define LCNT_OVERLOAD_FLUSH 6 /* state entries flushed */ 1341 #define LCNT_MAX 7 /* total+1 */ 1342 1343 #define LCNT_NAMES { \ 1344 "max states per rule", \ 1345 "max-src-states", \ 1346 "max-src-nodes", \ 1347 "max-src-conn", \ 1348 "max-src-conn-rate", \ 1349 "overload table insertion", \ 1350 "overload flush states", \ 1351 NULL \ 1352 } 1353 1354 /* UDP state enumeration */ 1355 #define PFUDPS_NO_TRAFFIC 0 1356 #define PFUDPS_SINGLE 1 1357 #define PFUDPS_MULTIPLE 2 1358 1359 #define PFUDPS_NSTATES 3 /* number of state levels */ 1360 1361 #define PFUDPS_NAMES { \ 1362 "NO_TRAFFIC", \ 1363 "SINGLE", \ 1364 "MULTIPLE", \ 1365 NULL \ 1366 } 1367 1368 /* Other protocol state enumeration */ 1369 #define PFOTHERS_NO_TRAFFIC 0 1370 #define PFOTHERS_SINGLE 1 1371 #define PFOTHERS_MULTIPLE 2 1372 1373 #define PFOTHERS_NSTATES 3 /* number of state levels */ 1374 1375 #define PFOTHERS_NAMES { \ 1376 "NO_TRAFFIC", \ 1377 "SINGLE", \ 1378 "MULTIPLE", \ 1379 NULL \ 1380 } 1381 1382 #define FCNT_STATE_SEARCH 0 1383 #define FCNT_STATE_INSERT 1 1384 #define FCNT_STATE_REMOVALS 2 1385 #define FCNT_MAX 3 1386 1387 #define SCNT_SRC_NODE_SEARCH 0 1388 #define SCNT_SRC_NODE_INSERT 1 1389 #define SCNT_SRC_NODE_REMOVALS 2 1390 #define SCNT_MAX 3 1391 1392 #define ACTION_SET(a, x) \ 1393 do { \ 1394 if ((a) != NULL) \ 1395 *(a) = (x); \ 1396 } while (0) 1397 1398 #define REASON_SET(a, x) \ 1399 do { \ 1400 if ((void *)(a) != NULL) \ 1401 *(a) = (x); \ 1402 if (x < PFRES_MAX) \ 1403 pf_status.counters[x]++; \ 1404 } while (0) 1405 1406 struct pf_status { 1407 u_int64_t counters[PFRES_MAX]; 1408 u_int64_t lcounters[LCNT_MAX]; /* limit counters */ 1409 u_int64_t fcounters[FCNT_MAX]; 1410 u_int64_t scounters[SCNT_MAX]; 1411 u_int64_t pcounters[2][2][3]; 1412 u_int64_t bcounters[2][2]; 1413 u_int64_t stateid; 1414 time_t since; 1415 u_int32_t running; 1416 u_int32_t states; 1417 u_int32_t src_nodes; 1418 u_int32_t debug; 1419 u_int32_t hostid; 1420 u_int32_t reass; /* reassembly */ 1421 char ifname[IFNAMSIZ]; 1422 u_int8_t pf_chksum[PF_MD5_DIGEST_LENGTH]; 1423 }; 1424 1425 #define PF_REASS_ENABLED 0x01 1426 #define PF_REASS_NODF 0x02 1427 1428 struct pf_queue_bwspec { 1429 u_int absolute; 1430 u_int percent; 1431 }; 1432 1433 struct pf_queue_scspec { 1434 struct pf_queue_bwspec m1; 1435 struct pf_queue_bwspec m2; 1436 u_int d; 1437 }; 1438 1439 struct pf_queuespec { 1440 TAILQ_ENTRY(pf_queuespec) entries; 1441 char qname[PF_QNAME_SIZE]; 1442 char parent[PF_QNAME_SIZE]; 1443 char ifname[IFNAMSIZ]; 1444 struct pf_queue_scspec realtime; 1445 struct pf_queue_scspec linkshare; 1446 struct pf_queue_scspec upperlimit; 1447 struct pfi_kif *kif; 1448 u_int flags; 1449 u_int qlimit; 1450 u_int32_t qid; 1451 u_int32_t parent_qid; 1452 }; 1453 1454 struct cbq_opts { 1455 u_int minburst; 1456 u_int maxburst; 1457 u_int pktsize; 1458 u_int maxpktsize; 1459 u_int ns_per_byte; 1460 u_int maxidle; 1461 int minidle; 1462 u_int offtime; 1463 int flags; 1464 }; 1465 1466 struct priq_opts { 1467 int flags; 1468 }; 1469 1470 struct hfsc_opts { 1471 /* real-time service curve */ 1472 u_int rtsc_m1; /* slope of the 1st segment in bps */ 1473 u_int rtsc_d; /* the x-projection of m1 in msec */ 1474 u_int rtsc_m2; /* slope of the 2nd segment in bps */ 1475 /* link-sharing service curve */ 1476 u_int lssc_m1; 1477 u_int lssc_d; 1478 u_int lssc_m2; 1479 /* upper-limit service curve */ 1480 u_int ulsc_m1; 1481 u_int ulsc_d; 1482 u_int ulsc_m2; 1483 int flags; 1484 }; 1485 1486 struct pf_tagname { 1487 TAILQ_ENTRY(pf_tagname) entries; 1488 char name[PF_TAG_NAME_SIZE]; 1489 u_int16_t tag; 1490 int ref; 1491 }; 1492 1493 struct pf_divert { 1494 struct pf_addr addr; 1495 u_int16_t port; 1496 u_int16_t rdomain; 1497 }; 1498 1499 /* Fragment entries reference mbuf clusters, so base the default on that. */ 1500 #define PFFRAG_FRENT_HIWAT (NMBCLUSTERS / 4) /* Number of entries */ 1501 #define PFFRAG_FRAG_HIWAT (NMBCLUSTERS / 8) /* Number of packets */ 1502 1503 #define PFR_KTABLE_HIWAT 1000 /* Number of tables */ 1504 #define PFR_KENTRY_HIWAT 200000 /* Number of table entries */ 1505 #define PFR_KENTRY_HIWAT_SMALL 100000 /* Number of entries for tiny hosts */ 1506 1507 /* 1508 * ioctl parameter structures 1509 */ 1510 1511 struct pfioc_rule { 1512 u_int32_t action; 1513 u_int32_t ticket; 1514 u_int32_t nr; 1515 char anchor[MAXPATHLEN]; 1516 char anchor_call[MAXPATHLEN]; 1517 struct pf_rule rule; 1518 }; 1519 1520 struct pfioc_natlook { 1521 struct pf_addr saddr; 1522 struct pf_addr daddr; 1523 struct pf_addr rsaddr; 1524 struct pf_addr rdaddr; 1525 u_int16_t rdomain; 1526 u_int16_t rrdomain; 1527 u_int16_t sport; 1528 u_int16_t dport; 1529 u_int16_t rsport; 1530 u_int16_t rdport; 1531 sa_family_t af; 1532 u_int8_t proto; 1533 u_int8_t direction; 1534 }; 1535 1536 struct pfioc_state { 1537 struct pfsync_state state; 1538 }; 1539 1540 struct pfioc_src_node_kill { 1541 sa_family_t psnk_af; 1542 struct pf_rule_addr psnk_src; 1543 struct pf_rule_addr psnk_dst; 1544 u_int psnk_killed; 1545 }; 1546 1547 struct pfioc_state_kill { 1548 struct pf_state_cmp psk_pfcmp; 1549 sa_family_t psk_af; 1550 int psk_proto; 1551 struct pf_rule_addr psk_src; 1552 struct pf_rule_addr psk_dst; 1553 char psk_ifname[IFNAMSIZ]; 1554 char psk_label[PF_RULE_LABEL_SIZE]; 1555 u_int psk_killed; 1556 u_int16_t psk_rdomain; 1557 }; 1558 1559 struct pfioc_states { 1560 int ps_len; 1561 union { 1562 caddr_t psu_buf; 1563 struct pfsync_state *psu_states; 1564 } ps_u; 1565 #define ps_buf ps_u.psu_buf 1566 #define ps_states ps_u.psu_states 1567 }; 1568 1569 struct pfioc_src_nodes { 1570 int psn_len; 1571 union { 1572 caddr_t psu_buf; 1573 struct pf_src_node *psu_src_nodes; 1574 } psn_u; 1575 #define psn_buf psn_u.psu_buf 1576 #define psn_src_nodes psn_u.psu_src_nodes 1577 }; 1578 1579 struct pfioc_tm { 1580 int timeout; 1581 int seconds; 1582 }; 1583 1584 struct pfioc_limit { 1585 int index; 1586 unsigned limit; 1587 }; 1588 1589 struct pfioc_ruleset { 1590 u_int32_t nr; 1591 char path[MAXPATHLEN]; 1592 char name[PF_ANCHOR_NAME_SIZE]; 1593 }; 1594 1595 struct pfioc_trans { 1596 int size; /* number of elements */ 1597 int esize; /* size of each element in bytes */ 1598 struct pfioc_trans_e { 1599 int type; 1600 char anchor[MAXPATHLEN]; 1601 u_int32_t ticket; 1602 } *array; 1603 }; 1604 1605 struct pfioc_queue { 1606 u_int32_t ticket; 1607 u_int nr; 1608 struct pf_queuespec queue; 1609 }; 1610 1611 struct pfioc_qstats { 1612 u_int32_t ticket; 1613 u_int32_t nr; 1614 struct pf_queuespec queue; 1615 void *buf; 1616 int nbytes; 1617 }; 1618 1619 #define PFR_FLAG_DUMMY 0x00000002 1620 #define PFR_FLAG_FEEDBACK 0x00000004 1621 #define PFR_FLAG_CLSTATS 0x00000008 1622 #define PFR_FLAG_ADDRSTOO 0x00000010 1623 #define PFR_FLAG_REPLACE 0x00000020 1624 #define PFR_FLAG_ALLRSETS 0x00000040 1625 #define PFR_FLAG_ALLMASK 0x0000007F 1626 #ifdef _KERNEL 1627 #define PFR_FLAG_USERIOCTL 0x10000000 1628 #endif 1629 1630 struct pfioc_table { 1631 struct pfr_table pfrio_table; 1632 void *pfrio_buffer; 1633 int pfrio_esize; 1634 int pfrio_size; 1635 int pfrio_size2; 1636 int pfrio_nadd; 1637 int pfrio_ndel; 1638 int pfrio_nchange; 1639 int pfrio_flags; 1640 u_int32_t pfrio_ticket; 1641 }; 1642 #define pfrio_exists pfrio_nadd 1643 #define pfrio_nzero pfrio_nadd 1644 #define pfrio_nmatch pfrio_nadd 1645 #define pfrio_naddr pfrio_size2 1646 #define pfrio_setflag pfrio_size2 1647 #define pfrio_clrflag pfrio_nadd 1648 1649 struct pfioc_iface { 1650 char pfiio_name[IFNAMSIZ]; 1651 void *pfiio_buffer; 1652 int pfiio_esize; 1653 int pfiio_size; 1654 int pfiio_nzero; 1655 int pfiio_flags; 1656 }; 1657 1658 1659 /* 1660 * ioctl operations 1661 */ 1662 1663 #define DIOCSTART _IO ('D', 1) 1664 #define DIOCSTOP _IO ('D', 2) 1665 #define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule) 1666 #define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule) 1667 #define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule) 1668 /* XXX cut 8 - 17 */ 1669 #define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill) 1670 #define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state) 1671 #define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_iface) 1672 #define DIOCGETSTATUS _IOWR('D', 21, struct pf_status) 1673 #define DIOCCLRSTATUS _IOWR('D', 22, struct pfioc_iface) 1674 #define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook) 1675 #define DIOCSETDEBUG _IOWR('D', 24, u_int32_t) 1676 #define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states) 1677 #define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule) 1678 /* XXX cut 27 - 28 */ 1679 #define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm) 1680 #define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm) 1681 #define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state) 1682 #define DIOCCLRRULECTRS _IO ('D', 38) 1683 #define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit) 1684 #define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit) 1685 #define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill) 1686 /* XXX cut 42 - 57 */ 1687 #define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset) 1688 #define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset) 1689 #define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table) 1690 #define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table) 1691 #define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table) 1692 #define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table) 1693 #define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table) 1694 #define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table) 1695 #define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table) 1696 #define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table) 1697 #define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table) 1698 #define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table) 1699 #define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table) 1700 #define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table) 1701 #define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table) 1702 #define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table) 1703 #define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table) 1704 #define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table) 1705 #define DIOCOSFPFLUSH _IO('D', 78) 1706 #define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl) 1707 #define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl) 1708 #define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans) 1709 #define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans) 1710 #define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans) 1711 #define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes) 1712 #define DIOCCLRSRCNODES _IO('D', 85) 1713 #define DIOCSETHOSTID _IOWR('D', 86, u_int32_t) 1714 #define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface) 1715 #define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface) 1716 #define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface) 1717 #define DIOCKILLSRCNODES _IOWR('D', 91, struct pfioc_src_node_kill) 1718 #define DIOCSETREASS _IOWR('D', 92, u_int32_t) 1719 #define DIOCADDQUEUE _IOWR('D', 93, struct pfioc_queue) 1720 #define DIOCGETQUEUES _IOWR('D', 94, struct pfioc_queue) 1721 #define DIOCGETQUEUE _IOWR('D', 95, struct pfioc_queue) 1722 #define DIOCGETQSTATS _IOWR('D', 96, struct pfioc_qstats) 1723 1724 #ifdef _KERNEL 1725 RB_HEAD(pf_src_tree, pf_src_node); 1726 RB_PROTOTYPE(pf_src_tree, pf_src_node, entry, pf_src_compare); 1727 extern struct pf_src_tree tree_src_tracking; 1728 1729 RB_HEAD(pf_state_tree_id, pf_state); 1730 RB_PROTOTYPE(pf_state_tree_id, pf_state, 1731 entry_id, pf_state_compare_id); 1732 extern struct pf_state_tree_id tree_id; 1733 extern struct pf_state_queue state_list; 1734 1735 TAILQ_HEAD(pf_queuehead, pf_queuespec); 1736 extern struct pf_queuehead pf_queues[2]; 1737 extern struct pf_queuehead *pf_queues_active, *pf_queues_inactive; 1738 1739 extern u_int32_t ticket_pabuf; 1740 extern int pf_free_queues(struct pf_queuehead *, 1741 struct ifnet *); 1742 extern int pf_remove_queues(struct ifnet *); 1743 extern int pf_tbladdr_setup(struct pf_ruleset *, 1744 struct pf_addr_wrap *); 1745 extern void pf_tbladdr_remove(struct pf_addr_wrap *); 1746 extern void pf_tbladdr_copyout(struct pf_addr_wrap *); 1747 extern void pf_calc_skip_steps(struct pf_rulequeue *); 1748 extern struct pool pf_src_tree_pl, pf_sn_item_pl, pf_rule_pl; 1749 extern struct pool pf_state_pl, pf_state_key_pl, pf_state_item_pl, 1750 pf_rule_item_pl, pf_queue_pl; 1751 extern struct pool pf_state_scrub_pl; 1752 extern struct pool hfsc_class_pl, hfsc_classq_pl, 1753 hfsc_internal_sc_pl; 1754 extern void pf_purge_thread(void *); 1755 extern void pf_purge_expired_src_nodes(int); 1756 extern void pf_purge_expired_states(u_int32_t); 1757 extern void pf_unlink_state(struct pf_state *); 1758 extern void pf_free_state(struct pf_state *); 1759 extern int pf_state_insert(struct pfi_kif *, 1760 struct pf_state_key **, 1761 struct pf_state_key **, 1762 struct pf_state *); 1763 int pf_insert_src_node(struct pf_src_node **, 1764 struct pf_rule *, enum pf_sn_types, 1765 sa_family_t, struct pf_addr *, 1766 struct pf_addr *, int); 1767 void pf_remove_src_node(struct pf_src_node *); 1768 struct pf_src_node *pf_get_src_node(struct pf_state *, 1769 enum pf_sn_types); 1770 void pf_src_tree_remove_state(struct pf_state *); 1771 void pf_state_rm_src_node(struct pf_state *, 1772 struct pf_src_node *); 1773 1774 extern struct pf_state *pf_find_state_byid(struct pf_state_cmp *); 1775 extern struct pf_state *pf_find_state_all(struct pf_state_key_cmp *, 1776 u_int, int *); 1777 extern void pf_state_export(struct pfsync_state *, 1778 struct pf_state *); 1779 extern void pf_print_state(struct pf_state *); 1780 extern void pf_print_flags(u_int8_t); 1781 1782 extern struct ifnet *sync_ifp; 1783 extern struct pf_rule pf_default_rule; 1784 extern void pf_addrcpy(struct pf_addr *, struct pf_addr *, 1785 u_int8_t); 1786 void pf_rm_rule(struct pf_rulequeue *, 1787 struct pf_rule *); 1788 void pf_purge_rule(struct pf_ruleset *, 1789 struct pf_rule *); 1790 struct pf_divert *pf_find_divert(struct mbuf *); 1791 int pf_setup_pdesc(struct pf_pdesc *, void *, 1792 sa_family_t, int, struct pfi_kif *, 1793 struct mbuf *, u_short *); 1794 1795 int pf_test(sa_family_t, int, struct ifnet *, struct mbuf **, 1796 struct ether_header *); 1797 1798 void pf_poolmask(struct pf_addr *, struct pf_addr*, 1799 struct pf_addr *, struct pf_addr *, sa_family_t); 1800 void pf_addr_inc(struct pf_addr *, sa_family_t); 1801 1802 void *pf_pull_hdr(struct mbuf *, int, void *, int, u_short *, u_short *, 1803 sa_family_t); 1804 void pf_change_a(struct pf_pdesc *, void *, u_int32_t); 1805 int pf_check_proto_cksum(struct pf_pdesc *, int, int, u_int8_t, 1806 sa_family_t); 1807 int pflog_packet(struct pf_pdesc *, u_int8_t, struct pf_rule *, 1808 struct pf_rule *, struct pf_ruleset *); 1809 void pf_send_deferred_syn(struct pf_state *); 1810 int pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *, 1811 struct pf_addr *, sa_family_t); 1812 int pf_match_addr_range(struct pf_addr *, struct pf_addr *, 1813 struct pf_addr *, sa_family_t); 1814 int pf_match(u_int8_t, u_int32_t, u_int32_t, u_int32_t); 1815 int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t); 1816 int pf_match_uid(u_int8_t, uid_t, uid_t, uid_t); 1817 int pf_match_gid(u_int8_t, gid_t, gid_t, gid_t); 1818 1819 int pf_refragment6(struct mbuf **, struct m_tag *mtag, int); 1820 void pf_normalize_init(void); 1821 int pf_normalize_ip(struct pf_pdesc *, u_short *); 1822 int pf_normalize_ip6(struct pf_pdesc *, u_short *); 1823 int pf_normalize_tcp(struct pf_pdesc *); 1824 void pf_normalize_tcp_cleanup(struct pf_state *); 1825 int pf_normalize_tcp_init(struct pf_pdesc *, struct pf_state_peer *, 1826 struct pf_state_peer *); 1827 int pf_normalize_tcp_stateful(struct pf_pdesc *, u_short *, 1828 struct pf_state *, struct pf_state_peer *, struct pf_state_peer *, 1829 int *); 1830 int pf_normalize_mss(struct pf_pdesc *, u_int16_t); 1831 void pf_scrub(struct mbuf *, u_int16_t, sa_family_t, u_int8_t, u_int8_t); 1832 int32_t pf_state_expires(const struct pf_state *); 1833 void pf_purge_expired_fragments(void); 1834 int pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kif *, 1835 int); 1836 int pf_rtlabel_match(struct pf_addr *, sa_family_t, struct pf_addr_wrap *, 1837 int); 1838 int pf_socket_lookup(struct pf_pdesc *); 1839 struct pf_state_key *pf_alloc_state_key(int); 1840 void pf_pkt_addr_changed(struct mbuf *); 1841 int pf_state_key_attach(struct pf_state_key *, struct pf_state *, int); 1842 int pf_translate(struct pf_pdesc *, struct pf_addr *, u_int16_t, 1843 struct pf_addr *, u_int16_t, u_int16_t, int); 1844 int pf_translate_af(struct pf_pdesc *); 1845 void pf_route(struct mbuf **, struct pf_rule *, int, 1846 struct ifnet *, struct pf_state *); 1847 void pf_route6(struct mbuf **, struct pf_rule *, int, 1848 struct ifnet *, struct pf_state *); 1849 1850 void pfr_initialize(void); 1851 int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t); 1852 void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, 1853 struct pf_pdesc *, int, int); 1854 int pfr_pool_get(struct pf_pool *, struct pf_addr **, 1855 struct pf_addr **, sa_family_t); 1856 int pfr_states_increase(struct pfr_ktable *, struct pf_addr *, int); 1857 int pfr_states_decrease(struct pfr_ktable *, struct pf_addr *, int); 1858 struct pfr_kentry * 1859 pfr_kentry_byaddr(struct pfr_ktable *, struct pf_addr *, sa_family_t, 1860 int); 1861 void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *); 1862 struct pfr_ktable * 1863 pfr_attach_table(struct pf_ruleset *, char *, int); 1864 void pfr_detach_table(struct pfr_ktable *); 1865 int pfr_clr_tables(struct pfr_table *, int *, int); 1866 int pfr_add_tables(struct pfr_table *, int, int *, int); 1867 int pfr_del_tables(struct pfr_table *, int, int *, int); 1868 int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int); 1869 int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int); 1870 int pfr_clr_tstats(struct pfr_table *, int, int *, int); 1871 int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int); 1872 int pfr_clr_addrs(struct pfr_table *, int *, int); 1873 int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *, time_t); 1874 int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1875 int); 1876 int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1877 int); 1878 int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1879 int *, int *, int *, int, u_int32_t); 1880 int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int); 1881 int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int); 1882 int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *, 1883 int); 1884 int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1885 int); 1886 int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int); 1887 int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int); 1888 int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int); 1889 int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *, 1890 int *, u_int32_t, int); 1891 1892 extern struct pfi_kif *pfi_all; 1893 1894 void pfi_initialize(void); 1895 struct pfi_kif *pfi_kif_get(const char *); 1896 void pfi_kif_ref(struct pfi_kif *, enum pfi_kif_refs); 1897 void pfi_kif_unref(struct pfi_kif *, enum pfi_kif_refs); 1898 int pfi_kif_match(struct pfi_kif *, struct pfi_kif *); 1899 void pfi_attach_ifnet(struct ifnet *); 1900 void pfi_detach_ifnet(struct ifnet *); 1901 void pfi_attach_ifgroup(struct ifg_group *); 1902 void pfi_detach_ifgroup(struct ifg_group *); 1903 void pfi_group_change(const char *); 1904 int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *, 1905 sa_family_t); 1906 int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t); 1907 void pfi_dynaddr_remove(struct pf_addr_wrap *); 1908 void pfi_dynaddr_copyout(struct pf_addr_wrap *); 1909 void pfi_update_status(const char *, struct pf_status *); 1910 int pfi_get_ifaces(const char *, struct pfi_kif *, int *); 1911 int pfi_set_flags(const char *, int); 1912 int pfi_clear_flags(const char *, int); 1913 void pfi_xcommit(void); 1914 1915 int pf_match_tag(struct mbuf *, struct pf_rule *, int *); 1916 u_int16_t pf_tagname2tag(char *, int); 1917 void pf_tag2tagname(u_int16_t, char *); 1918 void pf_tag_ref(u_int16_t); 1919 void pf_tag_unref(u_int16_t); 1920 void pf_tag_packet(struct mbuf *, int, int); 1921 int pf_addr_compare(struct pf_addr *, struct pf_addr *, 1922 sa_family_t); 1923 1924 extern struct pf_status pf_status; 1925 extern struct pool pf_frent_pl, pf_frag_pl; 1926 extern struct rwlock pf_consistency_lock; 1927 1928 struct pf_pool_limit { 1929 void *pp; 1930 unsigned limit; 1931 unsigned limit_new; 1932 }; 1933 extern struct pf_pool_limit pf_pool_limits[PF_LIMIT_MAX]; 1934 1935 #endif /* _KERNEL */ 1936 1937 extern struct pf_anchor_global pf_anchors; 1938 extern struct pf_anchor pf_main_anchor; 1939 #define pf_main_ruleset pf_main_anchor.ruleset 1940 1941 /* these ruleset functions can be linked into userland programs (pfctl) */ 1942 void pf_init_ruleset(struct pf_ruleset *); 1943 int pf_anchor_setup(struct pf_rule *, 1944 const struct pf_ruleset *, const char *); 1945 int pf_anchor_copyout(const struct pf_ruleset *, 1946 const struct pf_rule *, struct pfioc_rule *); 1947 void pf_anchor_remove(struct pf_rule *); 1948 void pf_remove_if_empty_ruleset(struct pf_ruleset *); 1949 struct pf_anchor *pf_find_anchor(const char *); 1950 struct pf_ruleset *pf_find_ruleset(const char *); 1951 struct pf_ruleset *pf_find_or_create_ruleset(const char *); 1952 void pf_rs_initialize(void); 1953 1954 #ifdef _KERNEL 1955 int pf_anchor_copyout(const struct pf_ruleset *, 1956 const struct pf_rule *, struct pfioc_rule *); 1957 void pf_anchor_remove(struct pf_rule *); 1958 1959 #endif /* _KERNEL */ 1960 1961 /* The fingerprint functions can be linked into userland programs (tcpdump) */ 1962 int pf_osfp_add(struct pf_osfp_ioctl *); 1963 #ifdef _KERNEL 1964 struct pf_osfp_enlist * 1965 pf_osfp_fingerprint(struct pf_pdesc *); 1966 #endif /* _KERNEL */ 1967 struct pf_osfp_enlist * 1968 pf_osfp_fingerprint_hdr(const struct ip *, const struct ip6_hdr *, 1969 const struct tcphdr *); 1970 void pf_osfp_flush(void); 1971 int pf_osfp_get(struct pf_osfp_ioctl *); 1972 void pf_osfp_initialize(void); 1973 int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t); 1974 struct pf_os_fingerprint * 1975 pf_osfp_validate(void); 1976 1977 #ifdef _KERNEL 1978 void pf_print_host(struct pf_addr *, u_int16_t, u_int8_t); 1979 1980 int pf_get_transaddr(struct pf_rule *, struct pf_pdesc *, 1981 struct pf_src_node **, struct pf_rule **); 1982 1983 int pf_map_addr(sa_family_t, struct pf_rule *, 1984 struct pf_addr *, struct pf_addr *, 1985 struct pf_addr *, struct pf_src_node **, 1986 struct pf_pool *, enum pf_sn_types); 1987 1988 int pf_postprocess_addr(struct pf_state *); 1989 1990 void pf_cksum(struct pf_pdesc *, struct mbuf *); 1991 1992 #endif /* _KERNEL */ 1993 1994 1995 #endif /* _NET_PFVAR_H_ */ 1996