1 /* $OpenBSD: pfvar.h,v 1.276 2008/07/03 15:46:23 henning Exp $ */ 2 3 /* 4 * Copyright (c) 2010 The DragonFly Project. All rights reserved. 5 * 6 * Copyright (c) 2001 Daniel Hartmeier 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 13 * - Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * - Redistributions in binary form must reproduce the above 16 * copyright notice, this list of conditions and the following 17 * disclaimer in the documentation and/or other materials provided 18 * with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 24 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 27 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 28 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 30 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 * POSSIBILITY OF SUCH DAMAGE. 32 * 33 */ 34 35 #ifndef _NET_PFVAR_H_ 36 #define _NET_PFVAR_H_ 37 38 #include <sys/param.h> 39 #include <sys/types.h> 40 #include <sys/limits.h> 41 #include <sys/ioccom.h> 42 #include <sys/queue.h> 43 #include <sys/tree.h> 44 #include <sys/lock.h> 45 46 #include <net/radix.h> 47 #include <net/if_clone.h> 48 #include <netinet/in.h> 49 #include <netinet/in_pcb.h> 50 51 52 /* 53 * XXX 54 * If we include <netipsec/keydb.h>, we need _KERNEL definition. 55 * This makes pfctl compilation difficult. 56 */ 57 union sockaddr_union { 58 struct sockaddr sa; 59 struct sockaddr_in sin; 60 struct sockaddr_in6 sin6; 61 }; 62 63 #include <netinet/tcp_fsm.h> 64 65 struct ip; 66 struct ip6_hdr; 67 68 extern struct lwkt_token pf_token; 69 70 #define PF_TCPS_PROXY_SRC ((TCP_NSTATES)+0) 71 #define PF_TCPS_PROXY_DST ((TCP_NSTATES)+1) 72 73 74 #define RTLABEL_LEN 32 75 #define IFG_ALL "all" /* group contains all interfaces */ 76 #define BPF_DIRECTION_OUT (1<<1) 77 #define PWAIT 0 78 #define RT_NUMFIBS 1 79 #define ALTQ_IS_ENABLED(ifq) ((ifq)->altq_flags & ALTQF_ENABLED) 80 81 82 #define PF_MD5_DIGEST_LENGTH 16 83 #ifdef MD5_DIGEST_LENGTH 84 #if PF_MD5_DIGEST_LENGTH != MD5_DIGEST_LENGTH 85 #error 86 #endif 87 #endif 88 89 enum { PF_INOUT, PF_IN, PF_OUT }; 90 enum { PF_PASS, PF_DROP, PF_SCRUB, PF_NOSCRUB, PF_NAT, PF_NONAT, 91 PF_BINAT, PF_NOBINAT, PF_RDR, PF_NORDR, PF_SYNPROXY_DROP }; 92 enum { PF_RULESET_SCRUB, PF_RULESET_FILTER, PF_RULESET_NAT, 93 PF_RULESET_BINAT, PF_RULESET_RDR, PF_RULESET_MAX }; 94 enum { PF_OP_NONE, PF_OP_IRG, PF_OP_EQ, PF_OP_NE, PF_OP_LT, 95 PF_OP_LE, PF_OP_GT, PF_OP_GE, PF_OP_XRG, PF_OP_RRG }; 96 enum { PF_DEBUG_NONE, PF_DEBUG_URGENT, PF_DEBUG_MISC, PF_DEBUG_NOISY }; 97 enum { PF_CHANGE_NONE, PF_CHANGE_ADD_HEAD, PF_CHANGE_ADD_TAIL, 98 PF_CHANGE_ADD_BEFORE, PF_CHANGE_ADD_AFTER, 99 PF_CHANGE_REMOVE, PF_CHANGE_GET_TICKET }; 100 enum { PF_GET_NONE, PF_GET_CLR_CNTR }; 101 enum { PF_SK_WIRE, PF_SK_STACK, PF_SK_BOTH }; 102 103 /* 104 * Note about PFTM_*: real indices into pf_rule.timeout[] come before 105 * PFTM_MAX, special cases afterwards. See pf_state_expires(). 106 */ 107 enum { PFTM_TCP_FIRST_PACKET, PFTM_TCP_OPENING, PFTM_TCP_ESTABLISHED, 108 PFTM_TCP_CLOSING, PFTM_TCP_FIN_WAIT, PFTM_TCP_CLOSED, 109 PFTM_UDP_FIRST_PACKET, PFTM_UDP_SINGLE, PFTM_UDP_MULTIPLE, 110 PFTM_ICMP_FIRST_PACKET, PFTM_ICMP_ERROR_REPLY, 111 PFTM_OTHER_FIRST_PACKET, PFTM_OTHER_SINGLE, 112 PFTM_OTHER_MULTIPLE, PFTM_FRAG, PFTM_INTERVAL, 113 PFTM_ADAPTIVE_START, PFTM_ADAPTIVE_END, PFTM_SRC_NODE, 114 PFTM_TS_DIFF, PFTM_MAX, PFTM_PURGE, PFTM_UNLINKED, 115 PFTM_UNTIL_PACKET }; 116 117 /* PFTM default values */ 118 #define PFTM_TCP_FIRST_PACKET_VAL 120 /* First TCP packet */ 119 #define PFTM_TCP_OPENING_VAL 30 /* No response yet */ 120 #define PFTM_TCP_ESTABLISHED_VAL 24*60*60/* Established */ 121 #define PFTM_TCP_CLOSING_VAL 15 * 60 /* Half closed */ 122 #define PFTM_TCP_FIN_WAIT_VAL 45 /* Got both FINs */ 123 #define PFTM_TCP_CLOSED_VAL 90 /* Got a RST */ 124 #define PFTM_UDP_FIRST_PACKET_VAL 60 /* First UDP packet */ 125 #define PFTM_UDP_SINGLE_VAL 30 /* Unidirectional */ 126 #define PFTM_UDP_MULTIPLE_VAL 60 /* Bidirectional */ 127 #define PFTM_ICMP_FIRST_PACKET_VAL 20 /* First ICMP packet */ 128 #define PFTM_ICMP_ERROR_REPLY_VAL 10 /* Got error response */ 129 #define PFTM_OTHER_FIRST_PACKET_VAL 60 /* First packet */ 130 #define PFTM_OTHER_SINGLE_VAL 30 /* Unidirectional */ 131 #define PFTM_OTHER_MULTIPLE_VAL 60 /* Bidirectional */ 132 #define PFTM_FRAG_VAL 30 /* Fragment expire */ 133 #define PFTM_INTERVAL_VAL 10 /* Expire interval */ 134 #define PFTM_SRC_NODE_VAL 0 /* Source tracking */ 135 #define PFTM_TS_DIFF_VAL 30 /* Allowed TS diff */ 136 137 enum { PF_NOPFROUTE, PF_FASTROUTE, PF_ROUTETO, PF_DUPTO, PF_REPLYTO }; 138 enum { PF_LIMIT_STATES, PF_LIMIT_SRC_NODES, PF_LIMIT_FRAGS, 139 PF_LIMIT_TABLES, PF_LIMIT_TABLE_ENTRIES, PF_LIMIT_MAX }; 140 #define PF_POOL_IDMASK 0x0f 141 enum { PF_POOL_NONE, PF_POOL_BITMASK, PF_POOL_RANDOM, 142 PF_POOL_SRCHASH, PF_POOL_ROUNDROBIN }; 143 enum { PF_ADDR_ADDRMASK, PF_ADDR_NOROUTE, PF_ADDR_DYNIFTL, 144 PF_ADDR_TABLE, PF_ADDR_RTLABEL, PF_ADDR_URPFFAILED, 145 PF_ADDR_RANGE }; 146 #define PF_POOL_TYPEMASK 0x0f 147 #define PF_POOL_STICKYADDR 0x20 148 #define PF_WSCALE_FLAG 0x80 149 #define PF_WSCALE_MASK 0x0f 150 151 #define PF_LOG 0x01 152 #define PF_LOG_ALL 0x02 153 #define PF_LOG_SOCKET_LOOKUP 0x04 154 155 #define PR_WAITOK 0x0001 /* M_WAITOK */ 156 #define PR_NOWAIT 0x0002 /* M_NOWAIT */ 157 #define PR_LIMITFAIL 0x0004 /* M_CANFAIL */ 158 #define PR_ZERO 0x0008 /* M_ZERO */ 159 160 161 struct pf_addr { 162 union { 163 struct in_addr v4; 164 struct in6_addr v6; 165 u_int8_t addr8[16]; 166 u_int16_t addr16[8]; 167 u_int32_t addr32[4]; 168 } pfa; /* 128-bit address */ 169 #define v4 pfa.v4 170 #define v6 pfa.v6 171 #define addr8 pfa.addr8 172 #define addr16 pfa.addr16 173 #define addr32 pfa.addr32 174 }; 175 176 #define PF_TABLE_NAME_SIZE 32 177 178 #define PFI_AFLAG_NETWORK 0x01 179 #define PFI_AFLAG_BROADCAST 0x02 180 #define PFI_AFLAG_PEER 0x04 181 #define PFI_AFLAG_MODEMASK 0x07 182 #define PFI_AFLAG_NOALIAS 0x08 183 184 struct pf_addr_wrap { 185 union { 186 struct { 187 struct pf_addr addr; 188 struct pf_addr mask; 189 } a; 190 char ifname[IFNAMSIZ]; 191 char tblname[PF_TABLE_NAME_SIZE]; 192 char rtlabelname[RTLABEL_LEN]; 193 u_int32_t rtlabel; 194 } v; 195 union { 196 struct pfi_dynaddr *dyn; 197 struct pfr_ktable *tbl; 198 int dyncnt; 199 int tblcnt; 200 } p; 201 u_int8_t type; /* PF_ADDR_* */ 202 u_int8_t iflags; /* PFI_AFLAG_* */ 203 }; 204 205 #ifdef _KERNEL 206 207 struct pfi_dynaddr { 208 TAILQ_ENTRY(pfi_dynaddr) entry; 209 struct pf_addr pfid_addr4; 210 struct pf_addr pfid_mask4; 211 struct pf_addr pfid_addr6; 212 struct pf_addr pfid_mask6; 213 struct pfr_ktable *pfid_kt; 214 struct pfi_kif *pfid_kif; 215 void *pfid_hook_cookie; 216 int pfid_net; /* mask or 128 */ 217 int pfid_acnt4; /* address count IPv4 */ 218 int pfid_acnt6; /* address count IPv6 */ 219 sa_family_t pfid_af; /* rule af */ 220 u_int8_t pfid_iflags; /* PFI_AFLAG_* */ 221 }; 222 223 /* 224 * Address manipulation macros 225 */ 226 227 #define NTOHS(x) (x) = ntohs((__uint16_t)(x)) 228 #define HTONS(x) (x) = htons((__uint16_t)(x)) 229 230 #define PF_NAME "pf" 231 232 #define PF_MODVER 44 233 #define PFLOG_MODVER 44 234 #define PFSYNC_MODVER 44 235 236 #define PFLOG_MINVER 44 237 #define PFLOG_PREFVER PFLOG_MODVER 238 #define PFLOG_MAXVER 44 239 #define PFSYNC_MINVER 44 240 #define PFSYNC_PREFVER PFSYNC_MODVER 241 #define PFSYNC_MAXVER 44 242 243 /* prototyped for pf_subr.c */ 244 struct hook_desc { 245 TAILQ_ENTRY(hook_desc) hd_list; 246 void (*hd_fn)(void *); 247 void *hd_arg; 248 }; 249 TAILQ_HEAD(hook_desc_head, hook_desc); 250 251 void *hook_establish(struct hook_desc_head *, int, void (*)(void *), void *); 252 void hook_disestablish(struct hook_desc_head *, void *); 253 void dohooks(struct hook_desc_head *, int); 254 255 #define HOOK_REMOVE 0x01 256 #define HOOK_FREE 0x02 257 258 #ifdef INET 259 #ifndef INET6 260 #define PF_INET_ONLY 261 #endif /* ! INET6 */ 262 #endif /* INET */ 263 264 #ifdef INET6 265 #ifndef INET 266 #define PF_INET6_ONLY 267 #endif /* ! INET */ 268 #endif /* INET6 */ 269 270 #ifdef INET 271 #ifdef INET6 272 #define PF_INET_INET6 273 #endif /* INET6 */ 274 #endif /* INET */ 275 276 #else 277 278 #define PF_INET_INET6 279 280 #endif /* _KERNEL */ 281 282 /* Both IPv4 and IPv6 */ 283 #ifdef PF_INET_INET6 284 285 #define PF_AEQ(a, b, c) \ 286 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \ 287 ((a)->addr32[3] == (b)->addr32[3] && \ 288 (a)->addr32[2] == (b)->addr32[2] && \ 289 (a)->addr32[1] == (b)->addr32[1] && \ 290 (a)->addr32[0] == (b)->addr32[0])) \ 291 292 #define PF_ANEQ(a, b, c) \ 293 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \ 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_AZERO(a, c) \ 300 ((c == AF_INET && !(a)->addr32[0]) || \ 301 (!(a)->addr32[0] && !(a)->addr32[1] && \ 302 !(a)->addr32[2] && !(a)->addr32[3] )) \ 303 304 #define PF_MATCHA(n, a, m, b, f) \ 305 pf_match_addr(n, a, m, b, f) 306 307 #define PF_ACPY(a, b, f) \ 308 pf_addrcpy(a, b, f) 309 310 #define PF_AINC(a, f) \ 311 pf_addr_inc(a, f) 312 313 #define PF_POOLMASK(a, b, c, d, f) \ 314 pf_poolmask(a, b, c, d, f) 315 316 #else 317 318 /* Just IPv6 */ 319 320 #ifdef PF_INET6_ONLY 321 322 #define PF_AEQ(a, b, c) \ 323 ((a)->addr32[3] == (b)->addr32[3] && \ 324 (a)->addr32[2] == (b)->addr32[2] && \ 325 (a)->addr32[1] == (b)->addr32[1] && \ 326 (a)->addr32[0] == (b)->addr32[0]) \ 327 328 #define PF_ANEQ(a, b, c) \ 329 ((a)->addr32[3] != (b)->addr32[3] || \ 330 (a)->addr32[2] != (b)->addr32[2] || \ 331 (a)->addr32[1] != (b)->addr32[1] || \ 332 (a)->addr32[0] != (b)->addr32[0]) \ 333 334 #define PF_AZERO(a, c) \ 335 (!(a)->addr32[0] && \ 336 !(a)->addr32[1] && \ 337 !(a)->addr32[2] && \ 338 !(a)->addr32[3] ) \ 339 340 #define PF_MATCHA(n, a, m, b, f) \ 341 pf_match_addr(n, a, m, b, f) 342 343 #define PF_ACPY(a, b, f) \ 344 pf_addrcpy(a, b, f) 345 346 #define PF_AINC(a, f) \ 347 pf_addr_inc(a, f) 348 349 #define PF_POOLMASK(a, b, c, d, f) \ 350 pf_poolmask(a, b, c, d, f) 351 352 #else 353 354 /* Just IPv4 */ 355 #ifdef PF_INET_ONLY 356 357 #define PF_AEQ(a, b, c) \ 358 ((a)->addr32[0] == (b)->addr32[0]) 359 360 #define PF_ANEQ(a, b, c) \ 361 ((a)->addr32[0] != (b)->addr32[0]) 362 363 #define PF_AZERO(a, c) \ 364 (!(a)->addr32[0]) 365 366 #define PF_MATCHA(n, a, m, b, f) \ 367 pf_match_addr(n, a, m, b, f) 368 369 #define PF_ACPY(a, b, f) \ 370 (a)->v4.s_addr = (b)->v4.s_addr 371 372 #define PF_AINC(a, f) \ 373 do { \ 374 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \ 375 } while (0) 376 377 #define PF_POOLMASK(a, b, c, d, f) \ 378 do { \ 379 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \ 380 (((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \ 381 } while (0) 382 383 #endif /* PF_INET_ONLY */ 384 #endif /* PF_INET6_ONLY */ 385 #endif /* PF_INET_INET6 */ 386 387 #define PF_MISMATCHAW(aw, x, af, neg, ifp) \ 388 ( \ 389 (((aw)->type == PF_ADDR_NOROUTE && \ 390 pf_routable((x), (af), NULL)) || \ 391 (((aw)->type == PF_ADDR_URPFFAILED && (ifp) != NULL && \ 392 pf_routable((x), (af), (ifp))) || \ 393 ((aw)->type == PF_ADDR_RTLABEL && \ 394 !pf_rtlabel_match((x), (af), (aw))) || \ 395 ((aw)->type == PF_ADDR_TABLE && \ 396 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \ 397 ((aw)->type == PF_ADDR_DYNIFTL && \ 398 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \ 399 ((aw)->type == PF_ADDR_RANGE && \ 400 !pf_match_addr_range(&(aw)->v.a.addr, \ 401 &(aw)->v.a.mask, (x), (af))) || \ 402 ((aw)->type == PF_ADDR_ADDRMASK && \ 403 !PF_AZERO(&(aw)->v.a.mask, (af)) && \ 404 !PF_MATCHA(0, &(aw)->v.a.addr, \ 405 &(aw)->v.a.mask, (x), (af))))) != \ 406 (neg) \ 407 ) 408 409 struct pf_rule_uid { 410 uid_t uid[2]; 411 u_int8_t op; 412 }; 413 414 struct pf_rule_gid { 415 uid_t gid[2]; 416 u_int8_t op; 417 }; 418 419 struct pf_rule_addr { 420 struct pf_addr_wrap addr; 421 u_int16_t port[2]; 422 u_int8_t neg; 423 u_int8_t port_op; 424 }; 425 426 struct pf_pooladdr { 427 struct pf_addr_wrap addr; 428 TAILQ_ENTRY(pf_pooladdr) entries; 429 char ifname[IFNAMSIZ]; 430 struct pfi_kif *kif; 431 }; 432 433 TAILQ_HEAD(pf_palist, pf_pooladdr); 434 435 struct pf_poolhashkey { 436 union { 437 u_int8_t key8[16]; 438 u_int16_t key16[8]; 439 u_int32_t key32[4]; 440 } pfk; /* 128-bit hash key */ 441 #define key8 pfk.key8 442 #define key16 pfk.key16 443 #define key32 pfk.key32 444 }; 445 446 struct pf_pool { 447 struct pf_palist list; 448 struct pf_pooladdr *cur; 449 struct pf_poolhashkey key; 450 struct pf_addr counter; 451 int tblidx; 452 u_int16_t proxy_port[2]; 453 u_int8_t port_op; 454 u_int8_t opts; 455 }; 456 457 458 /* A packed Operating System description for fingerprinting */ 459 typedef u_int32_t pf_osfp_t; 460 #define PF_OSFP_ANY ((pf_osfp_t)0) 461 #define PF_OSFP_UNKNOWN ((pf_osfp_t)-1) 462 #define PF_OSFP_NOMATCH ((pf_osfp_t)-2) 463 464 struct pf_osfp_entry { 465 SLIST_ENTRY(pf_osfp_entry) fp_entry; 466 pf_osfp_t fp_os; 467 int fp_enflags; 468 #define PF_OSFP_EXPANDED 0x001 /* expanded entry */ 469 #define PF_OSFP_GENERIC 0x002 /* generic signature */ 470 #define PF_OSFP_NODETAIL 0x004 /* no p0f details */ 471 #define PF_OSFP_LEN 32 472 char fp_class_nm[PF_OSFP_LEN]; 473 char fp_version_nm[PF_OSFP_LEN]; 474 char fp_subtype_nm[PF_OSFP_LEN]; 475 }; 476 #define PF_OSFP_ENTRY_EQ(a, b) \ 477 ((a)->fp_os == (b)->fp_os && \ 478 memcmp((a)->fp_class_nm, (b)->fp_class_nm, PF_OSFP_LEN) == 0 && \ 479 memcmp((a)->fp_version_nm, (b)->fp_version_nm, PF_OSFP_LEN) == 0 && \ 480 memcmp((a)->fp_subtype_nm, (b)->fp_subtype_nm, PF_OSFP_LEN) == 0) 481 482 /* handle pf_osfp_t packing */ 483 #define _FP_RESERVED_BIT 1 /* For the special negative #defines */ 484 #define _FP_UNUSED_BITS 1 485 #define _FP_CLASS_BITS 10 /* OS Class (Windows, Linux) */ 486 #define _FP_VERSION_BITS 10 /* OS version (95, 98, NT, 2.4.54, 3.2) */ 487 #define _FP_SUBTYPE_BITS 10 /* patch level (NT SP4, SP3, ECN patch) */ 488 #define PF_OSFP_UNPACK(osfp, class, version, subtype) do { \ 489 (class) = ((osfp) >> (_FP_VERSION_BITS+_FP_SUBTYPE_BITS)) & \ 490 ((1 << _FP_CLASS_BITS) - 1); \ 491 (version) = ((osfp) >> _FP_SUBTYPE_BITS) & \ 492 ((1 << _FP_VERSION_BITS) - 1);\ 493 (subtype) = (osfp) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 494 } while(0) 495 #define PF_OSFP_PACK(osfp, class, version, subtype) do { \ 496 (osfp) = ((class) & ((1 << _FP_CLASS_BITS) - 1)) << (_FP_VERSION_BITS \ 497 + _FP_SUBTYPE_BITS); \ 498 (osfp) |= ((version) & ((1 << _FP_VERSION_BITS) - 1)) << \ 499 _FP_SUBTYPE_BITS; \ 500 (osfp) |= (subtype) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 501 } while(0) 502 503 /* the fingerprint of an OSes TCP SYN packet */ 504 typedef u_int64_t pf_tcpopts_t; 505 struct pf_os_fingerprint { 506 SLIST_HEAD(pf_osfp_enlist, pf_osfp_entry) fp_oses; /* list of matches */ 507 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 508 u_int16_t fp_wsize; /* TCP window size */ 509 u_int16_t fp_psize; /* ip->ip_len */ 510 u_int16_t fp_mss; /* TCP MSS */ 511 u_int16_t fp_flags; 512 #define PF_OSFP_WSIZE_MOD 0x0001 /* Window modulus */ 513 #define PF_OSFP_WSIZE_DC 0x0002 /* Window don't care */ 514 #define PF_OSFP_WSIZE_MSS 0x0004 /* Window multiple of MSS */ 515 #define PF_OSFP_WSIZE_MTU 0x0008 /* Window multiple of MTU */ 516 #define PF_OSFP_PSIZE_MOD 0x0010 /* packet size modulus */ 517 #define PF_OSFP_PSIZE_DC 0x0020 /* packet size don't care */ 518 #define PF_OSFP_WSCALE 0x0040 /* TCP window scaling */ 519 #define PF_OSFP_WSCALE_MOD 0x0080 /* TCP window scale modulus */ 520 #define PF_OSFP_WSCALE_DC 0x0100 /* TCP window scale dont-care */ 521 #define PF_OSFP_MSS 0x0200 /* TCP MSS */ 522 #define PF_OSFP_MSS_MOD 0x0400 /* TCP MSS modulus */ 523 #define PF_OSFP_MSS_DC 0x0800 /* TCP MSS dont-care */ 524 #define PF_OSFP_DF 0x1000 /* IPv4 don't fragment bit */ 525 #define PF_OSFP_TS0 0x2000 /* Zero timestamp */ 526 #define PF_OSFP_INET6 0x4000 /* IPv6 */ 527 u_int8_t fp_optcnt; /* TCP option count */ 528 u_int8_t fp_wscale; /* TCP window scaling */ 529 u_int8_t fp_ttl; /* IPv4 TTL */ 530 #define PF_OSFP_MAXTTL_OFFSET 40 531 /* TCP options packing */ 532 #define PF_OSFP_TCPOPT_NOP 0x0 /* TCP NOP option */ 533 #define PF_OSFP_TCPOPT_WSCALE 0x1 /* TCP window scaling option */ 534 #define PF_OSFP_TCPOPT_MSS 0x2 /* TCP max segment size opt */ 535 #define PF_OSFP_TCPOPT_SACK 0x3 /* TCP SACK OK option */ 536 #define PF_OSFP_TCPOPT_TS 0x4 /* TCP timestamp option */ 537 #define PF_OSFP_TCPOPT_BITS 3 /* bits used by each option */ 538 #define PF_OSFP_MAX_OPTS \ 539 (sizeof(((struct pf_os_fingerprint *)0)->fp_tcpopts) * 8) \ 540 / PF_OSFP_TCPOPT_BITS 541 542 SLIST_ENTRY(pf_os_fingerprint) fp_next; 543 }; 544 545 struct pf_osfp_ioctl { 546 struct pf_osfp_entry fp_os; 547 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 548 u_int16_t fp_wsize; /* TCP window size */ 549 u_int16_t fp_psize; /* ip->ip_len */ 550 u_int16_t fp_mss; /* TCP MSS */ 551 u_int16_t fp_flags; 552 u_int8_t fp_optcnt; /* TCP option count */ 553 u_int8_t fp_wscale; /* TCP window scaling */ 554 u_int8_t fp_ttl; /* IPv4 TTL */ 555 556 int fp_getnum; /* DIOCOSFPGET number */ 557 }; 558 559 560 union pf_rule_ptr { 561 struct pf_rule *ptr; 562 u_int32_t nr; 563 }; 564 565 #define PF_ANCHOR_NAME_SIZE 64 566 567 struct pf_rule { 568 struct pf_rule_addr src; 569 struct pf_rule_addr dst; 570 #define PF_SKIP_IFP 0 571 #define PF_SKIP_DIR 1 572 #define PF_SKIP_AF 2 573 #define PF_SKIP_PROTO 3 574 #define PF_SKIP_SRC_ADDR 4 575 #define PF_SKIP_SRC_PORT 5 576 #define PF_SKIP_DST_ADDR 6 577 #define PF_SKIP_DST_PORT 7 578 #define PF_SKIP_COUNT 8 579 union pf_rule_ptr skip[PF_SKIP_COUNT]; 580 #define PF_RULE_LABEL_SIZE 64 581 char label[PF_RULE_LABEL_SIZE]; 582 #define PF_QNAME_SIZE 64 583 char ifname[IFNAMSIZ]; 584 char qname[PF_QNAME_SIZE]; 585 char pqname[PF_QNAME_SIZE]; 586 #define PF_TAG_NAME_SIZE 64 587 char tagname[PF_TAG_NAME_SIZE]; 588 char match_tagname[PF_TAG_NAME_SIZE]; 589 590 char overload_tblname[PF_TABLE_NAME_SIZE]; 591 592 TAILQ_ENTRY(pf_rule) entries; 593 struct pf_pool rpool; 594 595 u_int64_t evaluations; 596 u_int64_t packets[2]; 597 u_int64_t bytes[2]; 598 599 struct pfi_kif *kif; 600 struct pf_anchor *anchor; 601 struct pfr_ktable *overload_tbl; 602 603 pf_osfp_t os_fingerprint; 604 605 int rtableid; 606 u_int32_t timeout[PFTM_MAX]; 607 u_int32_t states_cur; 608 u_int32_t states_tot; 609 u_int32_t max_states; 610 u_int32_t src_nodes; 611 u_int32_t max_src_nodes; 612 u_int32_t max_src_states; 613 u_int32_t max_src_conn; 614 struct { 615 u_int32_t limit; 616 u_int32_t seconds; 617 } max_src_conn_rate; 618 u_int32_t qid; 619 u_int32_t pqid; 620 u_int32_t rt_listid; 621 u_int32_t nr; 622 u_int32_t prob; 623 uid_t cuid; 624 pid_t cpid; 625 626 u_int16_t return_icmp; 627 u_int16_t return_icmp6; 628 u_int16_t max_mss; 629 u_int16_t tag; 630 u_int16_t match_tag; 631 632 struct pf_rule_uid uid; 633 struct pf_rule_gid gid; 634 635 u_int32_t rule_flag; 636 u_int8_t action; 637 u_int8_t direction; 638 u_int8_t log; 639 u_int8_t logif; 640 u_int8_t quick; 641 u_int8_t ifnot; 642 u_int8_t match_tag_not; 643 u_int8_t natpass; 644 645 #define PF_STATE_NORMAL 0x1 646 #define PF_STATE_MODULATE 0x2 647 #define PF_STATE_SYNPROXY 0x3 648 u_int8_t keep_state; 649 sa_family_t af; 650 u_int8_t proto; 651 u_int8_t type; 652 u_int8_t code; 653 u_int8_t flags; 654 u_int8_t flagset; 655 u_int8_t min_ttl; 656 u_int8_t allow_opts; 657 u_int8_t rt; 658 u_int8_t return_ttl; 659 u_int8_t tos; 660 u_int8_t set_tos; 661 u_int8_t anchor_relative; 662 u_int8_t anchor_wildcard; 663 664 #define PF_FLUSH 0x01 665 #define PF_FLUSH_GLOBAL 0x02 666 u_int8_t flush; 667 668 struct { 669 struct pf_addr addr; 670 u_int16_t port; 671 } divert; 672 673 #define PF_PICKUPS_UNSPECIFIED 0 674 #define PF_PICKUPS_DISABLED 1 675 #define PF_PICKUPS_HASHONLY 2 676 #define PF_PICKUPS_ENABLED 3 677 u_int8_t pickup_mode; 678 u_int8_t unused01; /* available for use */ 679 }; 680 681 /* rule flags */ 682 #define PFRULE_DROP 0x0000 683 #define PFRULE_RETURNRST 0x0001 684 #define PFRULE_FRAGMENT 0x0002 685 #define PFRULE_RETURNICMP 0x0004 686 #define PFRULE_RETURN 0x0008 687 #define PFRULE_NOSYNC 0x0010 688 #define PFRULE_SRCTRACK 0x0020 /* track source states */ 689 #define PFRULE_RULESRCTRACK 0x0040 /* per rule */ 690 691 /* scrub flags */ 692 #define PFRULE_NODF 0x0100 693 #define PFRULE_FRAGCROP 0x0200 /* non-buffering frag cache */ 694 #define PFRULE_FRAGDROP 0x0400 /* drop funny fragments */ 695 #define PFRULE_RANDOMID 0x0800 696 #define PFRULE_REASSEMBLE_TCP 0x1000 697 #define PFRULE_SET_TOS 0x2000 698 699 /* rule flags again */ 700 #define PFRULE_IFBOUND 0x00010000 /* if-bound */ 701 #define PFRULE_STATESLOPPY 0x00020000 /* sloppy state tracking */ 702 703 #define PFSTATE_HIWAT 10000 /* default state table size */ 704 #define PFSTATE_ADAPT_START 6000 /* default adaptive timeout start */ 705 #define PFSTATE_ADAPT_END 12000 /* default adaptive timeout end */ 706 707 708 struct pf_threshold { 709 u_int32_t limit; 710 #define PF_THRESHOLD_MULT 1000 711 #define PF_THRESHOLD_MAX 0xffffffff / PF_THRESHOLD_MULT 712 u_int32_t seconds; 713 u_int32_t count; 714 u_int32_t last; 715 }; 716 717 struct pf_src_node { 718 RB_ENTRY(pf_src_node) entry; 719 struct pf_addr addr; 720 struct pf_addr raddr; 721 union pf_rule_ptr rule; 722 struct pfi_kif *kif; 723 u_int64_t bytes[2]; 724 u_int64_t packets[2]; 725 u_int32_t states; 726 u_int32_t conn; 727 struct pf_threshold conn_rate; 728 u_int32_t creation; 729 u_int32_t expire; 730 sa_family_t af; 731 u_int8_t ruletype; 732 }; 733 734 #define PFSNODE_HIWAT 10000 /* default source node table size */ 735 736 struct pf_state_scrub { 737 struct timeval pfss_last; /* time received last packet */ 738 u_int32_t pfss_tsecr; /* last echoed timestamp */ 739 u_int32_t pfss_tsval; /* largest timestamp */ 740 u_int32_t pfss_tsval0; /* original timestamp */ 741 u_int16_t pfss_flags; 742 #define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */ 743 #define PFSS_PAWS 0x0010 /* stricter PAWS checks */ 744 #define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */ 745 #define PFSS_DATA_TS 0x0040 /* timestamp on data packets */ 746 #define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */ 747 u_int8_t pfss_ttl; /* stashed TTL */ 748 u_int8_t pad; 749 u_int32_t pfss_ts_mod; /* timestamp modulation */ 750 }; 751 752 struct pf_state_host { 753 struct pf_addr addr; 754 u_int16_t port; 755 u_int16_t pad; 756 }; 757 758 struct pf_state_peer { 759 struct pf_state_scrub *scrub; /* state is scrubbed */ 760 u_int32_t seqlo; /* Max sequence number sent */ 761 u_int32_t seqhi; /* Max the other end ACKd + win */ 762 u_int32_t seqdiff; /* Sequence number modulator */ 763 u_int16_t max_win; /* largest window (pre scaling) */ 764 u_int16_t mss; /* Maximum segment size option */ 765 u_int8_t state; /* active state level */ 766 u_int8_t wscale; /* window scaling factor */ 767 u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */ 768 u_int8_t pad[1]; 769 }; 770 771 TAILQ_HEAD(pf_state_queue, pf_state); 772 773 /* keep synced with struct pf_state_key, used in RB_FIND */ 774 struct pf_state_key_cmp { 775 struct pf_addr addr[2]; 776 u_int16_t port[2]; 777 sa_family_t af; 778 u_int8_t proto; 779 u_int8_t pad[2]; 780 }; 781 782 struct pf_state_item { 783 TAILQ_ENTRY(pf_state_item) entry; 784 struct pf_state *s; 785 }; 786 787 TAILQ_HEAD(pf_statelisthead, pf_state_item); 788 789 struct pf_state_key { 790 struct pf_addr addr[2]; 791 u_int16_t port[2]; 792 sa_family_t af; 793 u_int8_t proto; 794 u_int8_t pad[2]; 795 796 RB_ENTRY(pf_state_key) entry; 797 struct pf_statelisthead states; 798 struct pf_state_key *reverse; 799 struct inpcb *inp; 800 }; 801 802 /* keep synced with struct pf_state, used in RB_FIND */ 803 struct pf_state_cmp { 804 u_int64_t id; 805 u_int32_t creatorid; 806 u_int8_t direction; 807 u_int8_t pad[3]; 808 }; 809 810 struct pf_state { 811 u_int64_t id; 812 u_int32_t creatorid; 813 u_int8_t direction; 814 u_int8_t pad[3]; 815 816 TAILQ_ENTRY(pf_state) entry_list; 817 RB_ENTRY(pf_state) entry_id; 818 struct pf_state_peer src; 819 struct pf_state_peer dst; 820 union pf_rule_ptr rule; 821 union pf_rule_ptr anchor; 822 union pf_rule_ptr nat_rule; 823 struct pf_addr rt_addr; 824 struct pf_state_key *key[2]; /* addresses stack and wire */ 825 struct pfi_kif *kif; 826 struct pfi_kif *rt_kif; 827 struct pf_src_node *src_node; 828 struct pf_src_node *nat_src_node; 829 u_int64_t packets[2]; 830 u_int64_t bytes[2]; 831 u_int32_t hash; 832 u_int32_t creation; 833 u_int32_t expire; 834 u_int32_t pfsync_time; 835 u_int16_t tag; 836 u_int8_t log; 837 u_int8_t state_flags; 838 #define PFSTATE_ALLOWOPTS 0x01 839 #define PFSTATE_SLOPPY 0x02 840 u_int8_t timeout; 841 u_int8_t sync_flags; 842 u_int8_t pickup_mode; 843 #define PFSTATE_NOSYNC 0x01 844 #define PFSTATE_FROMSYNC 0x02 845 #define PFSTATE_STALE 0x04 846 }; 847 848 /* 849 * Unified state structures for pulling states out of the kernel 850 * used by pfsync(4) and the pf(4) ioctl. 851 */ 852 struct pfsync_state_scrub { 853 u_int16_t pfss_flags; 854 u_int8_t pfss_ttl; /* stashed TTL */ 855 #define PFSYNC_SCRUB_FLAG_VALID 0x01 856 u_int8_t scrub_flag; 857 u_int32_t pfss_ts_mod; /* timestamp modulation */ 858 } __packed; 859 860 struct pfsync_state_peer { 861 struct pfsync_state_scrub scrub; /* state is scrubbed */ 862 u_int32_t seqlo; /* Max sequence number sent */ 863 u_int32_t seqhi; /* Max the other end ACKd + win */ 864 u_int32_t seqdiff; /* Sequence number modulator */ 865 u_int16_t max_win; /* largest window (pre scaling) */ 866 u_int16_t mss; /* Maximum segment size option */ 867 u_int8_t state; /* active state level */ 868 u_int8_t wscale; /* window scaling factor */ 869 u_int8_t pad[6]; 870 } __packed; 871 872 struct pfsync_state_key { 873 struct pf_addr addr[2]; 874 u_int16_t port[2]; 875 }; 876 877 struct pfsync_state { 878 u_int32_t id[2]; 879 char ifname[IFNAMSIZ]; 880 struct pfsync_state_key key[2]; 881 struct pfsync_state_peer src; 882 struct pfsync_state_peer dst; 883 struct pf_addr rt_addr; 884 u_int32_t rule; 885 u_int32_t anchor; 886 u_int32_t nat_rule; 887 u_int32_t creation; 888 u_int32_t expire; 889 u_int32_t packets[2][2]; 890 u_int32_t bytes[2][2]; 891 u_int32_t creatorid; 892 sa_family_t af; 893 u_int8_t proto; 894 u_int8_t direction; 895 u_int8_t log; 896 u_int8_t state_flags; 897 u_int8_t timeout; 898 u_int8_t sync_flags; 899 u_int8_t updates; 900 }; 901 902 #define PFSYNC_FLAG_COMPRESS 0x01 903 #define PFSYNC_FLAG_STALE 0x02 904 #define PFSYNC_FLAG_SRCNODE 0x04 905 #define PFSYNC_FLAG_NATSRCNODE 0x08 906 #define PFSTATE_GOT_SYN_MASK (PFSTATE_GOT_SYN1|PFSTATE_GOT_SYN2) 907 #define PFSTATE_GOT_SYN1 0x04 /* got SYN in one direction */ 908 #define PFSTATE_GOT_SYN2 0x08 /* got SYN in the other direction */ 909 910 /* for copies to/from network byte order */ 911 /* ioctl interface also uses network byte order */ 912 #define pf_state_peer_hton(s,d) do { \ 913 (d)->seqlo = htonl((s)->seqlo); \ 914 (d)->seqhi = htonl((s)->seqhi); \ 915 (d)->seqdiff = htonl((s)->seqdiff); \ 916 (d)->max_win = htons((s)->max_win); \ 917 (d)->mss = htons((s)->mss); \ 918 (d)->state = (s)->state; \ 919 (d)->wscale = (s)->wscale; \ 920 if ((s)->scrub) { \ 921 (d)->scrub.pfss_flags = \ 922 htons((s)->scrub->pfss_flags & PFSS_TIMESTAMP); \ 923 (d)->scrub.pfss_ttl = (s)->scrub->pfss_ttl; \ 924 (d)->scrub.pfss_ts_mod = htonl((s)->scrub->pfss_ts_mod);\ 925 (d)->scrub.scrub_flag = PFSYNC_SCRUB_FLAG_VALID; \ 926 } \ 927 } while (0) 928 929 #define pf_state_peer_ntoh(s,d) do { \ 930 (d)->seqlo = ntohl((s)->seqlo); \ 931 (d)->seqhi = ntohl((s)->seqhi); \ 932 (d)->seqdiff = ntohl((s)->seqdiff); \ 933 (d)->max_win = ntohs((s)->max_win); \ 934 (d)->mss = ntohs((s)->mss); \ 935 (d)->state = (s)->state; \ 936 (d)->wscale = (s)->wscale; \ 937 if ((s)->scrub.scrub_flag == PFSYNC_SCRUB_FLAG_VALID && \ 938 (d)->scrub != NULL) { \ 939 (d)->scrub->pfss_flags = \ 940 ntohs((s)->scrub.pfss_flags) & PFSS_TIMESTAMP; \ 941 (d)->scrub->pfss_ttl = (s)->scrub.pfss_ttl; \ 942 (d)->scrub->pfss_ts_mod = ntohl((s)->scrub.pfss_ts_mod);\ 943 } \ 944 } while (0) 945 946 #define pf_state_counter_hton(s,d) do { \ 947 d[0] = htonl((s>>32)&0xffffffff); \ 948 d[1] = htonl(s&0xffffffff); \ 949 } while (0) 950 951 #define pf_state_counter_from_pfsync(s) \ 952 (((u_int64_t)(s[0])<<32) | (u_int64_t)(s[1])) 953 954 #define pf_state_counter_ntoh(s,d) do { \ 955 d = ntohl(s[0]); \ 956 d = d<<32; \ 957 d += ntohl(s[1]); \ 958 } while (0) 959 960 TAILQ_HEAD(pf_rulequeue, pf_rule); 961 962 struct pf_anchor; 963 964 struct pf_ruleset { 965 struct { 966 struct pf_rulequeue queues[2]; 967 struct { 968 struct pf_rulequeue *ptr; 969 struct pf_rule **ptr_array; 970 u_int32_t rcount; 971 u_int32_t ticket; 972 int open; 973 } active, inactive; 974 } rules[PF_RULESET_MAX]; 975 struct pf_anchor *anchor; 976 u_int32_t tticket; 977 int tables; 978 int topen; 979 }; 980 981 RB_HEAD(pf_anchor_global, pf_anchor); 982 RB_HEAD(pf_anchor_node, pf_anchor); 983 struct pf_anchor { 984 RB_ENTRY(pf_anchor) entry_global; 985 RB_ENTRY(pf_anchor) entry_node; 986 struct pf_anchor *parent; 987 struct pf_anchor_node children; 988 char name[PF_ANCHOR_NAME_SIZE]; 989 char path[MAXPATHLEN]; 990 struct pf_ruleset ruleset; 991 int refcnt; /* anchor rules */ 992 int match; 993 }; 994 RB_PROTOTYPE(pf_anchor_global, pf_anchor, entry_global, pf_anchor_compare); 995 RB_PROTOTYPE(pf_anchor_node, pf_anchor, entry_node, pf_anchor_compare); 996 997 #define PF_RESERVED_ANCHOR "_pf" 998 999 #define PFR_TFLAG_PERSIST 0x00000001 1000 #define PFR_TFLAG_CONST 0x00000002 1001 #define PFR_TFLAG_ACTIVE 0x00000004 1002 #define PFR_TFLAG_INACTIVE 0x00000008 1003 #define PFR_TFLAG_REFERENCED 0x00000010 1004 #define PFR_TFLAG_REFDANCHOR 0x00000020 1005 #define PFR_TFLAG_COUNTERS 0x00000040 1006 /* Adjust masks below when adding flags. */ 1007 #define PFR_TFLAG_USRMASK 0x00000043 1008 #define PFR_TFLAG_SETMASK 0x0000003C 1009 #define PFR_TFLAG_ALLMASK 0x0000007F 1010 1011 struct pfr_table { 1012 char pfrt_anchor[MAXPATHLEN]; 1013 char pfrt_name[PF_TABLE_NAME_SIZE]; 1014 u_int32_t pfrt_flags; 1015 u_int8_t pfrt_fback; 1016 }; 1017 1018 enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED, 1019 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE, 1020 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_NOCOUNT, PFR_FB_MAX }; 1021 1022 struct pfr_addr { 1023 union { 1024 struct in_addr _pfra_ip4addr; 1025 struct in6_addr _pfra_ip6addr; 1026 } pfra_u; 1027 u_int8_t pfra_af; 1028 u_int8_t pfra_net; 1029 u_int8_t pfra_not; 1030 u_int8_t pfra_fback; 1031 }; 1032 #define pfra_ip4addr pfra_u._pfra_ip4addr 1033 #define pfra_ip6addr pfra_u._pfra_ip6addr 1034 1035 enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX }; 1036 enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX }; 1037 #define PFR_OP_XPASS PFR_OP_ADDR_MAX 1038 1039 struct pfr_astats { 1040 struct pfr_addr pfras_a; 1041 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1042 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1043 long pfras_tzero; 1044 }; 1045 1046 enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX }; 1047 1048 struct pfr_tstats { 1049 struct pfr_table pfrts_t; 1050 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1051 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1052 u_int64_t pfrts_match; 1053 u_int64_t pfrts_nomatch; 1054 long pfrts_tzero; 1055 int pfrts_cnt; 1056 int pfrts_refcnt[PFR_REFCNT_MAX]; 1057 }; 1058 #define pfrts_name pfrts_t.pfrt_name 1059 #define pfrts_flags pfrts_t.pfrt_flags 1060 1061 struct pfr_kcounters { 1062 u_int64_t pfrkc_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1063 u_int64_t pfrkc_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1064 }; 1065 1066 SLIST_HEAD(pfr_kentryworkq, pfr_kentry); 1067 struct pfr_kentry { 1068 struct radix_node pfrke_node[2]; 1069 union sockaddr_union pfrke_sa; 1070 SLIST_ENTRY(pfr_kentry) pfrke_workq; 1071 union { 1072 1073 struct pfr_kcounters *pfrke_counters; 1074 #if 0 1075 struct pfr_kroute *pfrke_route; 1076 #endif 1077 } u; 1078 long pfrke_tzero; 1079 u_int8_t pfrke_af; 1080 u_int8_t pfrke_net; 1081 u_int8_t pfrke_not; 1082 u_int8_t pfrke_mark; 1083 u_int8_t pfrke_intrpool; 1084 }; 1085 #define pfrke_counters u.pfrke_counters 1086 #define pfrke_route u.pfrke_route 1087 1088 1089 SLIST_HEAD(pfr_ktableworkq, pfr_ktable); 1090 RB_HEAD(pfr_ktablehead, pfr_ktable); 1091 struct pfr_ktable { 1092 struct pfr_tstats pfrkt_ts; 1093 RB_ENTRY(pfr_ktable) pfrkt_tree; 1094 SLIST_ENTRY(pfr_ktable) pfrkt_workq; 1095 struct radix_node_head *pfrkt_ip4; 1096 struct radix_node_head *pfrkt_ip6; 1097 struct pfr_ktable *pfrkt_shadow; 1098 struct pfr_ktable *pfrkt_root; 1099 struct pf_ruleset *pfrkt_rs; 1100 long pfrkt_larg; 1101 int pfrkt_nflags; 1102 }; 1103 #define pfrkt_t pfrkt_ts.pfrts_t 1104 #define pfrkt_name pfrkt_t.pfrt_name 1105 #define pfrkt_anchor pfrkt_t.pfrt_anchor 1106 #define pfrkt_ruleset pfrkt_t.pfrt_ruleset 1107 #define pfrkt_flags pfrkt_t.pfrt_flags 1108 #define pfrkt_cnt pfrkt_ts.pfrts_cnt 1109 #define pfrkt_refcnt pfrkt_ts.pfrts_refcnt 1110 #define pfrkt_packets pfrkt_ts.pfrts_packets 1111 #define pfrkt_bytes pfrkt_ts.pfrts_bytes 1112 #define pfrkt_match pfrkt_ts.pfrts_match 1113 #define pfrkt_nomatch pfrkt_ts.pfrts_nomatch 1114 #define pfrkt_tzero pfrkt_ts.pfrts_tzero 1115 1116 RB_HEAD(pf_state_tree, pf_state_key); 1117 RB_PROTOTYPE(pf_state_tree, pf_state_key, entry, pf_state_compare_key); 1118 1119 RB_HEAD(pf_state_tree_ext_gwy, pf_state_key); 1120 RB_PROTOTYPE(pf_state_tree_ext_gwy, pf_state_key, 1121 entry_ext_gwy, pf_state_compare_ext_gwy); 1122 1123 struct pfi_if { 1124 char pfif_name[IFNAMSIZ]; 1125 u_int64_t pfif_packets[2][2][2]; 1126 u_int64_t pfif_bytes[2][2][2]; 1127 u_int64_t pfif_addcnt; 1128 u_int64_t pfif_delcnt; 1129 long pfif_tzero; 1130 int pfif_states; 1131 int pfif_rules; 1132 int pfif_flags; 1133 }; 1134 1135 TAILQ_HEAD(pfi_grouphead, pfi_kif); 1136 TAILQ_HEAD(pfi_statehead, pfi_kif); 1137 RB_HEAD(pfi_ifhead, pfi_kif); 1138 1139 /* state tables */ 1140 extern struct pf_state_tree pf_statetbl; 1141 1142 /* keep synced with pfi_kif, used in RB_FIND */ 1143 struct pfi_kif_cmp { 1144 char pfik_ifname[IFNAMSIZ]; 1145 }; 1146 1147 struct pfi_kif { 1148 struct pfi_if pfik_if; 1149 RB_ENTRY(pfi_kif) pfik_tree; 1150 u_int64_t pfik_packets[2][2][2]; 1151 u_int64_t pfik_bytes[2][2][2]; 1152 u_int32_t pfik_tzero; 1153 int pfik_flags; 1154 struct hook_desc_head *pfik_ah_head; 1155 void *pfik_ah_cookie; 1156 struct pfi_kif *pfik_parent; 1157 struct ifnet *pfik_ifp; 1158 struct ifg_group *pfik_group; 1159 int pfik_states; 1160 int pfik_rules; 1161 TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs; 1162 }; 1163 #define pfik_name pfik_if.pfif_name 1164 #define pfik_packets pfik_if.pfif_packets 1165 #define pfik_bytes pfik_if.pfif_bytes 1166 #define pfik_tzero pfik_if.pfif_tzero 1167 #define pfik_flags pfik_if.pfif_flags 1168 #define pfik_addcnt pfik_if.pfif_addcnt 1169 #define pfik_delcnt pfik_if.pfif_delcnt 1170 #define pfik_states pfik_if.pfif_states 1171 #define pfik_rules pfik_if.pfif_rules 1172 1173 enum pfi_kif_refs { 1174 PFI_KIF_REF_NONE, 1175 PFI_KIF_REF_STATE, 1176 PFI_KIF_REF_RULE 1177 }; 1178 1179 #define PFI_IFLAG_GROUP 0x0001 /* group of interfaces */ 1180 #define PFI_IFLAG_INSTANCE 0x0002 /* single instance */ 1181 #define PFI_IFLAG_CLONABLE 0x0010 /* clonable group */ 1182 #define PFI_IFLAG_DYNAMIC 0x0020 /* dynamic group */ 1183 #define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */ 1184 #define PFI_IFLAG_PLACEHOLDER 0x8000 /* placeholder group/interface */ 1185 1186 struct pf_pdesc { 1187 struct { 1188 int done; 1189 uid_t uid; 1190 gid_t gid; 1191 pid_t pid; 1192 } lookup; 1193 u_int64_t tot_len; /* Make Mickey money */ 1194 union { 1195 struct tcphdr *tcp; 1196 struct udphdr *udp; 1197 struct icmp *icmp; 1198 #ifdef INET6 1199 struct icmp6_hdr *icmp6; 1200 #endif /* INET6 */ 1201 void *any; 1202 } hdr; 1203 1204 struct pf_rule *nat_rule; /* nat/rdr rule applied to packet */ 1205 struct ether_header 1206 *eh; 1207 struct pf_addr *src; /* src address */ 1208 struct pf_addr *dst; /* dst address */ 1209 u_int16_t *sport; 1210 u_int16_t *dport; 1211 1212 u_int32_t p_len; /* total length of payload */ 1213 1214 u_int16_t *ip_sum; 1215 u_int16_t *proto_sum; 1216 u_int16_t flags; /* Let SCRUB trigger behavior in 1217 * state code. Easier than tags */ 1218 #define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */ 1219 #define PFDESC_IP_REAS 0x0002 /* IP frags would've been reassembled */ 1220 sa_family_t af; 1221 u_int8_t proto; 1222 u_int8_t tos; 1223 u_int8_t dir; /* direction */ 1224 u_int8_t sidx; /* key index for source */ 1225 u_int8_t didx; /* key index for destination */ 1226 }; 1227 1228 /* flags for RDR options */ 1229 #define PF_DPORT_RANGE 0x01 /* Dest port uses range */ 1230 #define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */ 1231 1232 /* Reasons code for passing/dropping a packet */ 1233 #define PFRES_MATCH 0 /* Explicit match of a rule */ 1234 #define PFRES_BADOFF 1 /* Bad offset for pull_hdr */ 1235 #define PFRES_FRAG 2 /* Dropping following fragment */ 1236 #define PFRES_SHORT 3 /* Dropping short packet */ 1237 #define PFRES_NORM 4 /* Dropping by normalizer */ 1238 #define PFRES_MEMORY 5 /* Dropped due to lacking mem */ 1239 #define PFRES_TS 6 /* Bad TCP Timestamp (RFC1323) */ 1240 #define PFRES_CONGEST 7 /* Congestion (of ipintrq) */ 1241 #define PFRES_IPOPTIONS 8 /* IP option */ 1242 #define PFRES_PROTCKSUM 9 /* Protocol checksum invalid */ 1243 #define PFRES_BADSTATE 10 /* State mismatch */ 1244 #define PFRES_STATEINS 11 /* State insertion failure */ 1245 #define PFRES_MAXSTATES 12 /* State limit */ 1246 #define PFRES_SRCLIMIT 13 /* Source node/conn limit */ 1247 #define PFRES_SYNPROXY 14 /* SYN proxy */ 1248 #define PFRES_MAX 15 /* total+1 */ 1249 1250 #define PFRES_NAMES { \ 1251 "match", \ 1252 "bad-offset", \ 1253 "fragment", \ 1254 "short", \ 1255 "normalize", \ 1256 "memory", \ 1257 "bad-timestamp", \ 1258 "congestion", \ 1259 "ip-option", \ 1260 "proto-cksum", \ 1261 "state-mismatch", \ 1262 "state-insert", \ 1263 "state-limit", \ 1264 "src-limit", \ 1265 "synproxy", \ 1266 NULL \ 1267 } 1268 1269 /* Counters for other things we want to keep track of */ 1270 #define LCNT_STATES 0 /* states */ 1271 #define LCNT_SRCSTATES 1 /* max-src-states */ 1272 #define LCNT_SRCNODES 2 /* max-src-nodes */ 1273 #define LCNT_SRCCONN 3 /* max-src-conn */ 1274 #define LCNT_SRCCONNRATE 4 /* max-src-conn-rate */ 1275 #define LCNT_OVERLOAD_TABLE 5 /* entry added to overload table */ 1276 #define LCNT_OVERLOAD_FLUSH 6 /* state entries flushed */ 1277 #define LCNT_MAX 7 /* total+1 */ 1278 1279 #define LCNT_NAMES { \ 1280 "max states per rule", \ 1281 "max-src-states", \ 1282 "max-src-nodes", \ 1283 "max-src-conn", \ 1284 "max-src-conn-rate", \ 1285 "overload table insertion", \ 1286 "overload flush states", \ 1287 NULL \ 1288 } 1289 1290 /* UDP state enumeration */ 1291 #define PFUDPS_NO_TRAFFIC 0 1292 #define PFUDPS_SINGLE 1 1293 #define PFUDPS_MULTIPLE 2 1294 1295 #define PFUDPS_NSTATES 3 /* number of state levels */ 1296 1297 #define PFUDPS_NAMES { \ 1298 "NO_TRAFFIC", \ 1299 "SINGLE", \ 1300 "MULTIPLE", \ 1301 NULL \ 1302 } 1303 1304 /* Other protocol state enumeration */ 1305 #define PFOTHERS_NO_TRAFFIC 0 1306 #define PFOTHERS_SINGLE 1 1307 #define PFOTHERS_MULTIPLE 2 1308 1309 #define PFOTHERS_NSTATES 3 /* number of state levels */ 1310 1311 #define PFOTHERS_NAMES { \ 1312 "NO_TRAFFIC", \ 1313 "SINGLE", \ 1314 "MULTIPLE", \ 1315 NULL \ 1316 } 1317 1318 #define FCNT_STATE_SEARCH 0 1319 #define FCNT_STATE_INSERT 1 1320 #define FCNT_STATE_REMOVALS 2 1321 #define FCNT_MAX 3 1322 1323 #define SCNT_SRC_NODE_SEARCH 0 1324 #define SCNT_SRC_NODE_INSERT 1 1325 #define SCNT_SRC_NODE_REMOVALS 2 1326 #define SCNT_MAX 3 1327 1328 #define ACTION_SET(a, x) \ 1329 do { \ 1330 if ((a) != NULL) \ 1331 *(a) = (x); \ 1332 } while (0) 1333 1334 #define REASON_SET(a, x) \ 1335 do { \ 1336 u_short *r = (a); /* keep -Waddress happy */ \ 1337 if (r != NULL) \ 1338 *r = (x); \ 1339 if ((x) < PFRES_MAX) \ 1340 pf_status.counters[(x)]++; \ 1341 } while (0) 1342 1343 struct pf_status { 1344 u_int64_t counters[PFRES_MAX]; 1345 u_int64_t lcounters[LCNT_MAX]; /* limit counters */ 1346 u_int64_t fcounters[FCNT_MAX]; 1347 u_int64_t scounters[SCNT_MAX]; 1348 u_int64_t pcounters[2][2][3]; 1349 u_int64_t bcounters[2][2]; 1350 u_int64_t stateid; 1351 u_int32_t running; 1352 u_int32_t states; 1353 u_int32_t src_nodes; 1354 u_int32_t since; 1355 u_int32_t debug; 1356 u_int32_t hostid; 1357 char ifname[IFNAMSIZ]; 1358 u_int8_t pf_chksum[PF_MD5_DIGEST_LENGTH]; 1359 }; 1360 1361 struct cbq_opts { 1362 u_int minburst; 1363 u_int maxburst; 1364 u_int pktsize; 1365 u_int maxpktsize; 1366 u_int ns_per_byte; 1367 u_int maxidle; 1368 int minidle; 1369 u_int offtime; 1370 int flags; 1371 }; 1372 1373 struct priq_opts { 1374 int flags; 1375 }; 1376 1377 struct hfsc_opts { 1378 /* real-time service curve */ 1379 u_int rtsc_m1; /* slope of the 1st segment in bps */ 1380 u_int rtsc_d; /* the x-projection of m1 in msec */ 1381 u_int rtsc_m2; /* slope of the 2nd segment in bps */ 1382 /* link-sharing service curve */ 1383 u_int lssc_m1; 1384 u_int lssc_d; 1385 u_int lssc_m2; 1386 /* upper-limit service curve */ 1387 u_int ulsc_m1; 1388 u_int ulsc_d; 1389 u_int ulsc_m2; 1390 int flags; 1391 }; 1392 1393 /* 1394 * XXX this needs some work 1395 */ 1396 struct fairq_opts { 1397 u_int nbuckets; /* hash buckets */ 1398 u_int hogs_m1; /* hog detection bandwidth */ 1399 int flags; 1400 1401 /* link-sharing service curve */ 1402 u_int lssc_m1; 1403 u_int lssc_d; 1404 u_int lssc_m2; 1405 }; 1406 1407 struct pf_altq { 1408 char ifname[IFNAMSIZ]; 1409 1410 void *altq_disc; /* discipline-specific state */ 1411 TAILQ_ENTRY(pf_altq) entries; 1412 1413 /* scheduler spec */ 1414 u_int8_t scheduler; /* scheduler type */ 1415 u_int16_t tbrsize; /* tokenbucket regulator size */ 1416 u_int32_t ifbandwidth; /* interface bandwidth */ 1417 1418 /* queue spec */ 1419 char qname[PF_QNAME_SIZE]; /* queue name */ 1420 char parent[PF_QNAME_SIZE]; /* parent name */ 1421 u_int32_t parent_qid; /* parent queue id */ 1422 u_int32_t bandwidth; /* queue bandwidth */ 1423 u_int8_t priority; /* priority */ 1424 u_int16_t qlimit; /* queue size limit */ 1425 u_int16_t flags; /* misc flags */ 1426 union { 1427 struct cbq_opts cbq_opts; 1428 struct priq_opts priq_opts; 1429 struct hfsc_opts hfsc_opts; 1430 struct fairq_opts fairq_opts; 1431 } pq_u; 1432 1433 u_int32_t qid; /* return value */ 1434 }; 1435 1436 /* 1437 * DO NOT USE PF_TAG_GENERATED! Set PF_MBUF_TAGGED in fw_flags instead and 1438 * then clear pf.flags. The mbuf allocator does not automatically clear 1439 * the pf fields in the mbuf packet header. 1440 */ 1441 /*#define PF_TAG_GENERATED 0x01*/ 1442 #define PF_TAG_FRAGCACHE 0x02 1443 #define PF_TAG_TRANSLATE_LOCALHOST 0x04 1444 #define PF_TAG_STATE_HASHED 0x08 1445 1446 struct pf_tagname { 1447 TAILQ_ENTRY(pf_tagname) entries; 1448 char name[PF_TAG_NAME_SIZE]; 1449 u_int16_t tag; 1450 int ref; 1451 }; 1452 1453 struct pf_divert { 1454 union { 1455 struct in_addr ipv4; 1456 struct in6_addr ipv6; 1457 } addr; 1458 u_int16_t port; 1459 }; 1460 1461 #define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */ 1462 #define PFFRAG_FRAG_HIWAT 1000 /* Number of fragmented packets */ 1463 #define PFFRAG_FRCENT_HIWAT 50000 /* Number of fragment cache entries */ 1464 #define PFFRAG_FRCACHE_HIWAT 10000 /* Number of fragment descriptors */ 1465 1466 #define PFR_KTABLE_HIWAT 1000 /* Number of tables */ 1467 #define PFR_KENTRY_HIWAT 200000 /* Number of table entries */ 1468 #define PFR_KENTRY_HIWAT_SMALL 100000 /* Number of table entries (tiny hosts) */ 1469 1470 /* 1471 * ioctl parameter structures 1472 */ 1473 1474 struct pfioc_pooladdr { 1475 u_int32_t action; 1476 u_int32_t ticket; 1477 u_int32_t nr; 1478 u_int32_t r_num; 1479 u_int8_t r_action; 1480 u_int8_t r_last; 1481 u_int8_t af; 1482 char anchor[MAXPATHLEN]; 1483 struct pf_pooladdr addr; 1484 }; 1485 1486 struct pfioc_rule { 1487 u_int32_t action; 1488 u_int32_t ticket; 1489 u_int32_t pool_ticket; 1490 u_int32_t nr; 1491 char anchor[MAXPATHLEN]; 1492 char anchor_call[MAXPATHLEN]; 1493 struct pf_rule rule; 1494 }; 1495 1496 struct pfioc_natlook { 1497 struct pf_addr saddr; 1498 struct pf_addr daddr; 1499 struct pf_addr rsaddr; 1500 struct pf_addr rdaddr; 1501 u_int16_t sport; 1502 u_int16_t dport; 1503 u_int16_t rsport; 1504 u_int16_t rdport; 1505 sa_family_t af; 1506 u_int8_t proto; 1507 u_int8_t direction; 1508 }; 1509 1510 struct pfioc_state { 1511 struct pfsync_state state; 1512 }; 1513 1514 struct pfioc_src_node_kill { 1515 sa_family_t psnk_af; 1516 struct pf_rule_addr psnk_src; 1517 struct pf_rule_addr psnk_dst; 1518 u_int psnk_killed; 1519 }; 1520 1521 struct pfioc_state_kill { 1522 struct pf_state_cmp psk_pfcmp; 1523 sa_family_t psk_af; 1524 int psk_proto; 1525 struct pf_rule_addr psk_src; 1526 struct pf_rule_addr psk_dst; 1527 char psk_ifname[IFNAMSIZ]; 1528 char psk_label[PF_RULE_LABEL_SIZE]; 1529 u_int psk_killed; 1530 }; 1531 1532 struct pfioc_states { 1533 int ps_len; 1534 union { 1535 caddr_t psu_buf; 1536 struct pfsync_state *psu_states; 1537 } ps_u; 1538 #define ps_buf ps_u.psu_buf 1539 #define ps_states ps_u.psu_states 1540 }; 1541 1542 struct pfioc_src_nodes { 1543 int psn_len; 1544 union { 1545 caddr_t psu_buf; 1546 struct pf_src_node *psu_src_nodes; 1547 } psn_u; 1548 #define psn_buf psn_u.psu_buf 1549 #define psn_src_nodes psn_u.psu_src_nodes 1550 }; 1551 1552 struct pfioc_if { 1553 char ifname[IFNAMSIZ]; 1554 }; 1555 1556 struct pfioc_tm { 1557 int timeout; 1558 int seconds; 1559 }; 1560 1561 struct pfioc_limit { 1562 int index; 1563 unsigned limit; 1564 }; 1565 1566 struct pfioc_altq { 1567 u_int32_t action; 1568 u_int32_t ticket; 1569 u_int32_t nr; 1570 struct pf_altq altq; 1571 }; 1572 1573 struct pfioc_qstats { 1574 u_int32_t ticket; 1575 u_int32_t nr; 1576 void *buf; 1577 int nbytes; 1578 u_int8_t scheduler; 1579 }; 1580 1581 struct pfioc_anchor { 1582 u_int32_t nr; 1583 char name[PF_ANCHOR_NAME_SIZE]; 1584 }; 1585 1586 struct pfioc_ruleset { 1587 u_int32_t nr; 1588 char path[MAXPATHLEN]; 1589 char name[PF_ANCHOR_NAME_SIZE]; 1590 }; 1591 1592 #define PF_RULESET_ALTQ (PF_RULESET_MAX) 1593 #define PF_RULESET_TABLE (PF_RULESET_MAX+1) 1594 struct pfioc_trans { 1595 int size; /* number of elements */ 1596 int esize; /* size of each element in bytes */ 1597 struct pfioc_trans_e { 1598 int rs_num; 1599 char anchor[MAXPATHLEN]; 1600 u_int32_t ticket; 1601 } *array; 1602 }; 1603 1604 #define PFR_FLAG_ATOMIC 0x00000001 1605 #define PFR_FLAG_DUMMY 0x00000002 1606 #define PFR_FLAG_FEEDBACK 0x00000004 1607 #define PFR_FLAG_CLSTATS 0x00000008 1608 #define PFR_FLAG_ADDRSTOO 0x00000010 1609 #define PFR_FLAG_REPLACE 0x00000020 1610 #define PFR_FLAG_ALLRSETS 0x00000040 1611 #define PFR_FLAG_ALLMASK 0x0000007F 1612 #ifdef _KERNEL 1613 #define PFR_FLAG_USERIOCTL 0x10000000 1614 #endif 1615 1616 struct pfioc_table { 1617 struct pfr_table pfrio_table; 1618 void *pfrio_buffer; 1619 int pfrio_esize; 1620 int pfrio_size; 1621 int pfrio_size2; 1622 int pfrio_nadd; 1623 int pfrio_ndel; 1624 int pfrio_nchange; 1625 int pfrio_flags; 1626 u_int32_t pfrio_ticket; 1627 }; 1628 #define pfrio_exists pfrio_nadd 1629 #define pfrio_nzero pfrio_nadd 1630 #define pfrio_nmatch pfrio_nadd 1631 #define pfrio_naddr pfrio_size2 1632 #define pfrio_setflag pfrio_size2 1633 #define pfrio_clrflag pfrio_nadd 1634 1635 struct pfioc_iface { 1636 char pfiio_name[IFNAMSIZ]; 1637 void *pfiio_buffer; 1638 int pfiio_esize; 1639 int pfiio_size; 1640 int pfiio_nzero; 1641 int pfiio_flags; 1642 }; 1643 1644 1645 /* 1646 * ioctl operations 1647 */ 1648 1649 #define DIOCSTART _IO ('D', 1) 1650 #define DIOCSTOP _IO ('D', 2) 1651 #define DIOCBEGINRULES _IOWR('D', 3, struct pfioc_rule) 1652 #define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule) 1653 #define DIOCCOMMITRULES _IOWR('D', 5, struct pfioc_rule) 1654 #define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule) 1655 #define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule) 1656 /* XXX cut 8 - 17 */ 1657 #define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill) 1658 #define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state) 1659 #define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if) 1660 #define DIOCGETSTATUS _IOWR('D', 21, struct pf_status) 1661 #define DIOCCLRSTATUS _IO ('D', 22) 1662 #define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook) 1663 #define DIOCSETDEBUG _IOWR('D', 24, u_int32_t) 1664 #define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states) 1665 #define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule) 1666 /* XXX cut 26 - 28 */ 1667 #define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm) 1668 #define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm) 1669 #define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state) 1670 #define DIOCCLRRULECTRS _IO ('D', 38) 1671 #define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit) 1672 #define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit) 1673 #define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill) 1674 #define DIOCSTARTALTQ _IO ('D', 42) 1675 #define DIOCSTOPALTQ _IO ('D', 43) 1676 #define DIOCBEGINALTQS _IOWR('D', 44, u_int32_t) 1677 #define DIOCADDALTQ _IOWR('D', 45, struct pfioc_altq) 1678 #define DIOCCOMMITALTQS _IOWR('D', 46, u_int32_t) 1679 #define DIOCGETALTQS _IOWR('D', 47, struct pfioc_altq) 1680 #define DIOCGETALTQ _IOWR('D', 48, struct pfioc_altq) 1681 #define DIOCCHANGEALTQ _IOWR('D', 49, struct pfioc_altq) 1682 #define DIOCGETQSTATS _IOWR('D', 50, struct pfioc_qstats) 1683 #define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr) 1684 #define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr) 1685 #define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr) 1686 #define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr) 1687 #define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr) 1688 /* XXX cut 55 - 57 */ 1689 #define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset) 1690 #define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset) 1691 #define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table) 1692 #define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table) 1693 #define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table) 1694 #define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table) 1695 #define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table) 1696 #define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table) 1697 #define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table) 1698 #define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table) 1699 #define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table) 1700 #define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table) 1701 #define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table) 1702 #define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table) 1703 #define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table) 1704 #define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table) 1705 #define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table) 1706 #define DIOCRINABEGIN _IOWR('D', 75, struct pfioc_table) 1707 #define DIOCRINACOMMIT _IOWR('D', 76, struct pfioc_table) 1708 #define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table) 1709 #define DIOCOSFPFLUSH _IO('D', 78) 1710 #define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl) 1711 #define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl) 1712 #define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans) 1713 #define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans) 1714 #define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans) 1715 #define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes) 1716 #define DIOCCLRSRCNODES _IO('D', 85) 1717 #define DIOCSETHOSTID _IOWR('D', 86, u_int32_t) 1718 #define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface) 1719 #define DIOCICLRISTATS _IOWR('D', 88, struct pfioc_iface) 1720 #define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface) 1721 #define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface) 1722 #define DIOCKILLSRCNODES _IOWR('D', 91, struct pfioc_src_node_kill) 1723 struct pf_ifspeed { 1724 char ifname[IFNAMSIZ]; 1725 u_int32_t baudrate; 1726 }; 1727 #define DIOCGIFSPEED _IOWR('D', 89, struct pf_ifspeed) 1728 1729 #ifdef _KERNEL 1730 RB_HEAD(pf_src_tree, pf_src_node); 1731 RB_PROTOTYPE(pf_src_tree, pf_src_node, entry, pf_src_compare); 1732 extern struct pf_src_tree tree_src_tracking; 1733 1734 RB_HEAD(pf_state_tree_id, pf_state); 1735 RB_PROTOTYPE(pf_state_tree_id, pf_state, 1736 entry_id, pf_state_compare_id); 1737 extern struct pf_state_tree_id tree_id; 1738 extern struct pf_state_queue state_list; 1739 1740 TAILQ_HEAD(pf_poolqueue, pf_pool); 1741 extern struct pf_poolqueue pf_pools[2]; 1742 TAILQ_HEAD(pf_altqqueue, pf_altq); 1743 extern struct pf_altqqueue pf_altqs[2]; 1744 extern struct pf_palist pf_pabuf; 1745 1746 extern u_int32_t ticket_altqs_active; 1747 extern u_int32_t ticket_altqs_inactive; 1748 extern int altqs_inactive_open; 1749 extern u_int32_t ticket_pabuf; 1750 extern struct pf_altqqueue *pf_altqs_active; 1751 extern struct pf_altqqueue *pf_altqs_inactive; 1752 extern struct pf_poolqueue *pf_pools_active; 1753 extern struct pf_poolqueue *pf_pools_inactive; 1754 extern int pf_tbladdr_setup(struct pf_ruleset *, 1755 struct pf_addr_wrap *); 1756 extern void pf_tbladdr_remove(struct pf_addr_wrap *); 1757 extern void pf_tbladdr_copyout(struct pf_addr_wrap *); 1758 extern void pf_calc_skip_steps(struct pf_rulequeue *); 1759 extern struct malloc_type *pf_src_tree_pl, *pf_rule_pl; 1760 extern struct malloc_type *pf_state_pl, *pf_state_key_pl, *pf_state_item_pl, 1761 *pf_altq_pl, *pf_pooladdr_pl; 1762 extern struct malloc_type *pfr_ktable_pl, *pfr_kentry_pl; 1763 extern struct malloc_type *pfr_kentry_pl2; 1764 extern struct malloc_type *pf_cache_pl, *pf_cent_pl; 1765 extern struct malloc_type *pf_state_scrub_pl; 1766 extern struct malloc_type *pfi_addr_pl; 1767 extern void pf_purge_thread(void *); 1768 extern int pf_purge_expired_src_nodes(int); 1769 extern int pf_purge_expired_states(u_int32_t, int); 1770 extern void pf_unlink_state(struct pf_state *); 1771 extern void pf_free_state(struct pf_state *); 1772 extern int pf_state_insert(struct pfi_kif *, 1773 struct pf_state_key *, 1774 struct pf_state_key *, 1775 struct pf_state *); 1776 extern int pf_insert_src_node(struct pf_src_node **, 1777 struct pf_rule *, struct pf_addr *, 1778 sa_family_t); 1779 void pf_src_tree_remove_state(struct pf_state *); 1780 u_int32_t pf_state_hash(struct pf_state_key *sk); 1781 extern struct pf_state *pf_find_state_byid(struct pf_state_cmp *); 1782 extern struct pf_state *pf_find_state_all(struct pf_state_key_cmp *, 1783 u_int, int *); 1784 extern void pf_print_state(struct pf_state *); 1785 extern void pf_print_flags(u_int8_t); 1786 extern u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t, 1787 u_int8_t); 1788 1789 extern struct ifnet *sync_ifp; 1790 extern struct pf_rule pf_default_rule; 1791 extern void pf_addrcpy(struct pf_addr *, struct pf_addr *, 1792 u_int8_t); 1793 void pf_rm_rule(struct pf_rulequeue *, 1794 struct pf_rule *); 1795 struct pf_divert *pf_find_divert(struct mbuf *); 1796 1797 #ifdef INET 1798 int pf_test(int, struct ifnet *, struct mbuf **, struct ether_header *, struct inpcb *); 1799 #endif /* INET */ 1800 1801 #ifdef INET6 1802 int pf_test6(int, struct ifnet *, struct mbuf **, struct ether_header *, struct inpcb *); 1803 void pf_poolmask(struct pf_addr *, struct pf_addr*, 1804 struct pf_addr *, struct pf_addr *, u_int8_t); 1805 void pf_addr_inc(struct pf_addr *, sa_family_t); 1806 #endif /* INET6 */ 1807 1808 void *pf_pull_hdr(struct mbuf *, int, void *, int, u_short *, u_short *, 1809 sa_family_t); 1810 void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t); 1811 int pflog_packet(struct pfi_kif *, struct mbuf *, sa_family_t, u_int8_t, 1812 u_int8_t, struct pf_rule *, struct pf_rule *, struct pf_ruleset *, 1813 struct pf_pdesc *); 1814 int pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *, 1815 struct pf_addr *, sa_family_t); 1816 int pf_match_addr_range(struct pf_addr *, struct pf_addr *, 1817 struct pf_addr *, sa_family_t); 1818 int pf_match(u_int8_t, u_int32_t, u_int32_t, u_int32_t); 1819 int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t); 1820 int pf_match_uid(u_int8_t, uid_t, uid_t, uid_t); 1821 int pf_match_gid(u_int8_t, gid_t, gid_t, gid_t); 1822 1823 void pf_normalize_init(void); 1824 int pf_normalize_ip(struct mbuf **, int, struct pfi_kif *, u_short *, 1825 struct pf_pdesc *); 1826 int pf_normalize_ip6(struct mbuf **, int, struct pfi_kif *, u_short *, 1827 struct pf_pdesc *); 1828 int pf_normalize_tcp(int, struct pfi_kif *, struct mbuf *, int, int, void *, 1829 struct pf_pdesc *); 1830 void pf_normalize_tcp_cleanup(struct pf_state *); 1831 int pf_normalize_tcp_init(struct mbuf *, int, struct pf_pdesc *, 1832 struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *); 1833 int pf_normalize_tcp_stateful(struct mbuf *, int, struct pf_pdesc *, 1834 u_short *, struct tcphdr *, struct pf_state *, 1835 struct pf_state_peer *, struct pf_state_peer *, int *); 1836 u_int32_t 1837 pf_state_expires(const struct pf_state *); 1838 void pf_purge_expired_fragments(void); 1839 int pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kif *); 1840 int pf_rtlabel_match(struct pf_addr *, sa_family_t, struct pf_addr_wrap *); 1841 int pf_socket_lookup(int, struct pf_pdesc *); 1842 struct pf_state_key *pf_alloc_state_key(int); 1843 int pf_state_key_attach(struct pf_state_key *, struct pf_state *, int); 1844 void pfr_initialize(void); 1845 int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t); 1846 void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t, 1847 u_int64_t, int, int, int); 1848 int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, 1849 struct pf_addr **, struct pf_addr **, sa_family_t); 1850 void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *); 1851 struct pfr_ktable * 1852 pfr_attach_table(struct pf_ruleset *, char *); 1853 void pfr_detach_table(struct pfr_ktable *); 1854 int pfr_clr_tables(struct pfr_table *, int *, int); 1855 int pfr_add_tables(struct pfr_table *, int, int *, int); 1856 int pfr_del_tables(struct pfr_table *, int, int *, int); 1857 int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int); 1858 int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int); 1859 int pfr_clr_tstats(struct pfr_table *, int, int *, int); 1860 int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int); 1861 int pfr_clr_addrs(struct pfr_table *, int *, int); 1862 int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *, long); 1863 int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1864 int); 1865 int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1866 int); 1867 int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1868 int *, int *, int *, int, u_int32_t); 1869 int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int); 1870 int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int); 1871 int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *, 1872 int); 1873 int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1874 int); 1875 int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int); 1876 int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int); 1877 int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int); 1878 int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *, 1879 int *, u_int32_t, int); 1880 1881 extern struct pfi_kif *pfi_all; 1882 1883 void pfi_initialize(void); 1884 struct pfi_kif *pfi_kif_get(const char *); 1885 void pfi_cleanup(void); 1886 void pfi_attach_clone(struct if_clone *); 1887 void pfi_kif_ref(struct pfi_kif *, enum pfi_kif_refs); 1888 void pfi_kif_unref(struct pfi_kif *, enum pfi_kif_refs); 1889 int pfi_kif_match(struct pfi_kif *, struct pfi_kif *); 1890 void pfi_attach_ifnet(struct ifnet *); 1891 void pfi_detach_ifnet(struct ifnet *); 1892 struct pfi_kif *pfi_lookup_create(const char *); 1893 struct pfi_kif *pfi_lookup_if(const char *); 1894 void pfi_attach_ifgroup(struct ifg_group *); 1895 void pfi_detach_ifgroup(struct ifg_group *); 1896 void pfi_group_change(const char *); 1897 int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *, 1898 sa_family_t); 1899 int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t); 1900 void pfi_dynaddr_remove(struct pf_addr_wrap *); 1901 void pfi_dynaddr_copyout(struct pf_addr_wrap *); 1902 void pfi_update_status(const char *, struct pf_status *); 1903 int pfi_get_ifaces(const char *, struct pfi_kif *, int *); 1904 int pfi_set_flags(const char *, int); 1905 int pfi_clear_flags(const char *, int); 1906 1907 int pf_match_tag(struct mbuf *, struct pf_rule *, int *); 1908 u_int16_t pf_tagname2tag(char *); 1909 void pf_tag2tagname(u_int16_t, char *); 1910 void pf_tag_ref(u_int16_t); 1911 void pf_tag_unref(u_int16_t); 1912 int pf_tag_packet(struct mbuf *, int, int); 1913 u_int32_t pf_qname2qid(char *); 1914 void pf_qid2qname(u_int32_t, char *); 1915 void pf_qid_unref(u_int32_t); 1916 1917 extern struct pf_status pf_status; 1918 extern struct malloc_type *pf_frent_pl, *pf_frag_pl; 1919 extern struct lock pf_consistency_lock; 1920 1921 struct pf_pool_limit { 1922 void *pp; 1923 unsigned limit; 1924 }; 1925 extern struct pf_pool_limit pf_pool_limits[PF_LIMIT_MAX]; 1926 1927 struct pf_frent { 1928 LIST_ENTRY(pf_frent) fr_next; 1929 struct ip *fr_ip; 1930 struct mbuf *fr_m; 1931 }; 1932 1933 struct pf_frcache { 1934 LIST_ENTRY(pf_frcache) fr_next; 1935 uint16_t fr_off; 1936 uint16_t fr_end; 1937 }; 1938 1939 struct pf_fragment { 1940 RB_ENTRY(pf_fragment) fr_entry; 1941 TAILQ_ENTRY(pf_fragment) frag_next; 1942 struct in_addr fr_src; 1943 struct in_addr fr_dst; 1944 u_int8_t fr_p; /* protocol of this fragment */ 1945 u_int8_t fr_flags; /* status flags */ 1946 u_int16_t fr_id; /* fragment id for reassemble */ 1947 u_int16_t fr_max; /* fragment data max */ 1948 u_int32_t fr_timeout; 1949 #define fr_queue fr_u.fru_queue 1950 #define fr_cache fr_u.fru_cache 1951 union { 1952 LIST_HEAD(pf_fragq, pf_frent) fru_queue; /* buffering */ 1953 LIST_HEAD(pf_cacheq, pf_frcache) fru_cache; /* non-buf */ 1954 } fr_u; 1955 }; 1956 1957 #endif /* _KERNEL */ 1958 1959 extern struct radix_node_head *pf_maskhead; 1960 extern struct pf_anchor_global pf_anchors; 1961 extern struct pf_anchor pf_main_anchor; 1962 #define pf_main_ruleset pf_main_anchor.ruleset 1963 1964 /* these ruleset functions can be linked into userland programs (pfctl) */ 1965 int pf_get_ruleset_number(u_int8_t); 1966 void pf_init_ruleset(struct pf_ruleset *); 1967 int pf_anchor_setup(struct pf_rule *, 1968 const struct pf_ruleset *, const char *); 1969 int pf_anchor_copyout(const struct pf_ruleset *, 1970 const struct pf_rule *, struct pfioc_rule *); 1971 void pf_anchor_remove(struct pf_rule *); 1972 void pf_remove_if_empty_ruleset(struct pf_ruleset *); 1973 struct pf_anchor *pf_find_anchor(const char *); 1974 struct pf_ruleset *pf_find_ruleset(const char *); 1975 struct pf_ruleset *pf_find_or_create_ruleset(const char *); 1976 void pf_rs_initialize(void); 1977 1978 /* The fingerprint functions can be linked into userland programs (tcpdump) */ 1979 int pf_osfp_add(struct pf_osfp_ioctl *); 1980 #ifdef _KERNEL 1981 struct pf_osfp_enlist * 1982 pf_osfp_fingerprint(struct pf_pdesc *, struct mbuf *, int, 1983 const struct tcphdr *); 1984 #endif /* _KERNEL */ 1985 struct pf_osfp_enlist * 1986 pf_osfp_fingerprint_hdr(const struct ip *, const struct ip6_hdr *, 1987 const struct tcphdr *); 1988 void pf_osfp_flush(void); 1989 int pf_osfp_get(struct pf_osfp_ioctl *); 1990 void pf_osfp_initialize(void); 1991 int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t); 1992 struct pf_os_fingerprint * 1993 pf_osfp_validate(void); 1994 1995 1996 #endif /* _NET_PFVAR_H_ */ 1997