pfvar.h revision 240233
1/* $OpenBSD: pfvar.h,v 1.282 2009/01/29 15:12:28 pyr Exp $ */ 2 3/* 4 * Copyright (c) 2001 Daniel Hartmeier 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * - Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * - Redistributions in binary form must reproduce the above 14 * copyright notice, this list of conditions and the following 15 * disclaimer in the documentation and/or other materials provided 16 * with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 21 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 22 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 24 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 25 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 26 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 28 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 * 31 */ 32 33#ifndef _NET_PFVAR_H_ 34#define _NET_PFVAR_H_ 35 36#include <sys/param.h> 37#include <sys/queue.h> 38#include <sys/refcount.h> 39#include <sys/tree.h> 40 41#include <net/radix.h> 42#include <netinet/in.h> 43 44#include <net/pf_mtag.h> 45 46#define PF_TCPS_PROXY_SRC ((TCP_NSTATES)+0) 47#define PF_TCPS_PROXY_DST ((TCP_NSTATES)+1) 48 49#define PF_MD5_DIGEST_LENGTH 16 50#ifdef MD5_DIGEST_LENGTH 51#if PF_MD5_DIGEST_LENGTH != MD5_DIGEST_LENGTH 52#error 53#endif 54#endif 55 56enum { PF_INOUT, PF_IN, PF_OUT }; 57enum { PF_PASS, PF_DROP, PF_SCRUB, PF_NOSCRUB, PF_NAT, PF_NONAT, 58 PF_BINAT, PF_NOBINAT, PF_RDR, PF_NORDR, PF_SYNPROXY_DROP, PF_DEFER }; 59enum { PF_RULESET_SCRUB, PF_RULESET_FILTER, PF_RULESET_NAT, 60 PF_RULESET_BINAT, PF_RULESET_RDR, PF_RULESET_MAX }; 61enum { PF_OP_NONE, PF_OP_IRG, PF_OP_EQ, PF_OP_NE, PF_OP_LT, 62 PF_OP_LE, PF_OP_GT, PF_OP_GE, PF_OP_XRG, PF_OP_RRG }; 63enum { PF_DEBUG_NONE, PF_DEBUG_URGENT, PF_DEBUG_MISC, PF_DEBUG_NOISY }; 64enum { PF_CHANGE_NONE, PF_CHANGE_ADD_HEAD, PF_CHANGE_ADD_TAIL, 65 PF_CHANGE_ADD_BEFORE, PF_CHANGE_ADD_AFTER, 66 PF_CHANGE_REMOVE, PF_CHANGE_GET_TICKET }; 67enum { PF_GET_NONE, PF_GET_CLR_CNTR }; 68enum { PF_SK_WIRE, PF_SK_STACK, PF_SK_BOTH }; 69 70/* 71 * Note about PFTM_*: real indices into pf_rule.timeout[] come before 72 * PFTM_MAX, special cases afterwards. See pf_state_expires(). 73 */ 74enum { PFTM_TCP_FIRST_PACKET, PFTM_TCP_OPENING, PFTM_TCP_ESTABLISHED, 75 PFTM_TCP_CLOSING, PFTM_TCP_FIN_WAIT, PFTM_TCP_CLOSED, 76 PFTM_UDP_FIRST_PACKET, PFTM_UDP_SINGLE, PFTM_UDP_MULTIPLE, 77 PFTM_ICMP_FIRST_PACKET, PFTM_ICMP_ERROR_REPLY, 78 PFTM_OTHER_FIRST_PACKET, PFTM_OTHER_SINGLE, 79 PFTM_OTHER_MULTIPLE, PFTM_FRAG, PFTM_INTERVAL, 80 PFTM_ADAPTIVE_START, PFTM_ADAPTIVE_END, PFTM_SRC_NODE, 81 PFTM_TS_DIFF, PFTM_MAX, PFTM_PURGE, PFTM_UNLINKED, 82 PFTM_UNTIL_PACKET }; 83 84/* PFTM default values */ 85#define PFTM_TCP_FIRST_PACKET_VAL 120 /* First TCP packet */ 86#define PFTM_TCP_OPENING_VAL 30 /* No response yet */ 87#define PFTM_TCP_ESTABLISHED_VAL 24*60*60/* Established */ 88#define PFTM_TCP_CLOSING_VAL 15 * 60 /* Half closed */ 89#define PFTM_TCP_FIN_WAIT_VAL 45 /* Got both FINs */ 90#define PFTM_TCP_CLOSED_VAL 90 /* Got a RST */ 91#define PFTM_UDP_FIRST_PACKET_VAL 60 /* First UDP packet */ 92#define PFTM_UDP_SINGLE_VAL 30 /* Unidirectional */ 93#define PFTM_UDP_MULTIPLE_VAL 60 /* Bidirectional */ 94#define PFTM_ICMP_FIRST_PACKET_VAL 20 /* First ICMP packet */ 95#define PFTM_ICMP_ERROR_REPLY_VAL 10 /* Got error response */ 96#define PFTM_OTHER_FIRST_PACKET_VAL 60 /* First packet */ 97#define PFTM_OTHER_SINGLE_VAL 30 /* Unidirectional */ 98#define PFTM_OTHER_MULTIPLE_VAL 60 /* Bidirectional */ 99#define PFTM_FRAG_VAL 30 /* Fragment expire */ 100#define PFTM_INTERVAL_VAL 10 /* Expire interval */ 101#define PFTM_SRC_NODE_VAL 0 /* Source tracking */ 102#define PFTM_TS_DIFF_VAL 30 /* Allowed TS diff */ 103 104enum { PF_NOPFROUTE, PF_FASTROUTE, PF_ROUTETO, PF_DUPTO, PF_REPLYTO }; 105enum { PF_LIMIT_STATES, PF_LIMIT_SRC_NODES, PF_LIMIT_FRAGS, 106 PF_LIMIT_TABLE_ENTRIES, PF_LIMIT_MAX }; 107#define PF_POOL_IDMASK 0x0f 108enum { PF_POOL_NONE, PF_POOL_BITMASK, PF_POOL_RANDOM, 109 PF_POOL_SRCHASH, PF_POOL_ROUNDROBIN }; 110enum { PF_ADDR_ADDRMASK, PF_ADDR_NOROUTE, PF_ADDR_DYNIFTL, 111 PF_ADDR_TABLE, PF_ADDR_URPFFAILED, 112 PF_ADDR_RANGE }; 113#define PF_POOL_TYPEMASK 0x0f 114#define PF_POOL_STICKYADDR 0x20 115#define PF_WSCALE_FLAG 0x80 116#define PF_WSCALE_MASK 0x0f 117 118#define PF_LOG 0x01 119#define PF_LOG_ALL 0x02 120#define PF_LOG_SOCKET_LOOKUP 0x04 121 122struct pf_addr { 123 union { 124 struct in_addr v4; 125 struct in6_addr v6; 126 u_int8_t addr8[16]; 127 u_int16_t addr16[8]; 128 u_int32_t addr32[4]; 129 } pfa; /* 128-bit address */ 130#define v4 pfa.v4 131#define v6 pfa.v6 132#define addr8 pfa.addr8 133#define addr16 pfa.addr16 134#define addr32 pfa.addr32 135}; 136 137#define PF_TABLE_NAME_SIZE 32 138 139#define PFI_AFLAG_NETWORK 0x01 140#define PFI_AFLAG_BROADCAST 0x02 141#define PFI_AFLAG_PEER 0x04 142#define PFI_AFLAG_MODEMASK 0x07 143#define PFI_AFLAG_NOALIAS 0x08 144 145struct pf_addr_wrap { 146 union { 147 struct { 148 struct pf_addr addr; 149 struct pf_addr mask; 150 } a; 151 char ifname[IFNAMSIZ]; 152 char tblname[PF_TABLE_NAME_SIZE]; 153 } v; 154 union { 155 struct pfi_dynaddr *dyn; 156 struct pfr_ktable *tbl; 157 int dyncnt; 158 int tblcnt; 159 } p; 160 u_int8_t type; /* PF_ADDR_* */ 161 u_int8_t iflags; /* PFI_AFLAG_* */ 162}; 163 164#ifdef _KERNEL 165 166struct pfi_dynaddr { 167 TAILQ_ENTRY(pfi_dynaddr) entry; 168 struct pf_addr pfid_addr4; 169 struct pf_addr pfid_mask4; 170 struct pf_addr pfid_addr6; 171 struct pf_addr pfid_mask6; 172 struct pfr_ktable *pfid_kt; 173 struct pfi_kif *pfid_kif; 174 int pfid_net; /* mask or 128 */ 175 int pfid_acnt4; /* address count IPv4 */ 176 int pfid_acnt6; /* address count IPv6 */ 177 sa_family_t pfid_af; /* rule af */ 178 u_int8_t pfid_iflags; /* PFI_AFLAG_* */ 179}; 180 181/* 182 * Address manipulation macros 183 */ 184#define HTONL(x) (x) = htonl((__uint32_t)(x)) 185#define HTONS(x) (x) = htons((__uint16_t)(x)) 186#define NTOHL(x) (x) = ntohl((__uint32_t)(x)) 187#define NTOHS(x) (x) = ntohs((__uint16_t)(x)) 188 189#define PF_NAME "pf" 190 191#define PF_HASHROW_ASSERT(h) mtx_assert(&(h)->lock, MA_OWNED) 192#define PF_HASHROW_LOCK(h) mtx_lock(&(h)->lock) 193#define PF_HASHROW_UNLOCK(h) mtx_unlock(&(h)->lock) 194 195#define PF_STATE_LOCK(s) \ 196 do { \ 197 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(s)]; \ 198 PF_HASHROW_LOCK(_ih); \ 199 } while (0) 200 201#define PF_STATE_UNLOCK(s) \ 202 do { \ 203 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH((s))]; \ 204 PF_HASHROW_UNLOCK(_ih); \ 205 } while (0) 206 207#ifdef INVARIANTS 208#define PF_STATE_LOCK_ASSERT(s) \ 209 do { \ 210 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(s)]; \ 211 PF_HASHROW_ASSERT(_ih); \ 212 } while (0) 213#else /* !INVARIANTS */ 214#define PF_STATE_LOCK_ASSERT(s) do {} while (0) 215#endif /* INVARIANTS */ 216 217extern struct mtx pf_unlnkdrules_mtx; 218#define PF_UNLNKDRULES_LOCK() mtx_lock(&pf_unlnkdrules_mtx) 219#define PF_UNLNKDRULES_UNLOCK() mtx_unlock(&pf_unlnkdrules_mtx) 220 221extern struct rwlock pf_rules_lock; 222#define PF_RULES_RLOCK() rw_rlock(&pf_rules_lock) 223#define PF_RULES_RUNLOCK() rw_runlock(&pf_rules_lock) 224#define PF_RULES_WLOCK() rw_wlock(&pf_rules_lock) 225#define PF_RULES_WUNLOCK() rw_wunlock(&pf_rules_lock) 226#define PF_RULES_ASSERT() rw_assert(&pf_rules_lock, RA_LOCKED) 227#define PF_RULES_RASSERT() rw_assert(&pf_rules_lock, RA_RLOCKED) 228#define PF_RULES_WASSERT() rw_assert(&pf_rules_lock, RA_WLOCKED) 229 230#define PF_MODVER 1 231#define PFLOG_MODVER 1 232#define PFSYNC_MODVER 1 233 234#define PFLOG_MINVER 1 235#define PFLOG_PREFVER PFLOG_MODVER 236#define PFLOG_MAXVER 1 237#define PFSYNC_MINVER 1 238#define PFSYNC_PREFVER PFSYNC_MODVER 239#define PFSYNC_MAXVER 1 240 241#ifdef INET 242#ifndef INET6 243#define PF_INET_ONLY 244#endif /* ! INET6 */ 245#endif /* INET */ 246 247#ifdef INET6 248#ifndef INET 249#define PF_INET6_ONLY 250#endif /* ! INET */ 251#endif /* INET6 */ 252 253#ifdef INET 254#ifdef INET6 255#define PF_INET_INET6 256#endif /* INET6 */ 257#endif /* INET */ 258 259#else 260 261#define PF_INET_INET6 262 263#endif /* _KERNEL */ 264 265/* Both IPv4 and IPv6 */ 266#ifdef PF_INET_INET6 267 268#define PF_AEQ(a, b, c) \ 269 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \ 270 ((a)->addr32[3] == (b)->addr32[3] && \ 271 (a)->addr32[2] == (b)->addr32[2] && \ 272 (a)->addr32[1] == (b)->addr32[1] && \ 273 (a)->addr32[0] == (b)->addr32[0])) \ 274 275#define PF_ANEQ(a, b, c) \ 276 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \ 277 ((a)->addr32[3] != (b)->addr32[3] || \ 278 (a)->addr32[2] != (b)->addr32[2] || \ 279 (a)->addr32[1] != (b)->addr32[1] || \ 280 (a)->addr32[0] != (b)->addr32[0])) \ 281 282#define PF_AZERO(a, c) \ 283 ((c == AF_INET && !(a)->addr32[0]) || \ 284 (!(a)->addr32[0] && !(a)->addr32[1] && \ 285 !(a)->addr32[2] && !(a)->addr32[3] )) \ 286 287#define PF_MATCHA(n, a, m, b, f) \ 288 pf_match_addr(n, a, m, b, f) 289 290#define PF_ACPY(a, b, f) \ 291 pf_addrcpy(a, b, f) 292 293#define PF_AINC(a, f) \ 294 pf_addr_inc(a, f) 295 296#define PF_POOLMASK(a, b, c, d, f) \ 297 pf_poolmask(a, b, c, d, f) 298 299#else 300 301/* Just IPv6 */ 302 303#ifdef PF_INET6_ONLY 304 305#define PF_AEQ(a, b, c) \ 306 ((a)->addr32[3] == (b)->addr32[3] && \ 307 (a)->addr32[2] == (b)->addr32[2] && \ 308 (a)->addr32[1] == (b)->addr32[1] && \ 309 (a)->addr32[0] == (b)->addr32[0]) \ 310 311#define PF_ANEQ(a, b, c) \ 312 ((a)->addr32[3] != (b)->addr32[3] || \ 313 (a)->addr32[2] != (b)->addr32[2] || \ 314 (a)->addr32[1] != (b)->addr32[1] || \ 315 (a)->addr32[0] != (b)->addr32[0]) \ 316 317#define PF_AZERO(a, c) \ 318 (!(a)->addr32[0] && \ 319 !(a)->addr32[1] && \ 320 !(a)->addr32[2] && \ 321 !(a)->addr32[3] ) \ 322 323#define PF_MATCHA(n, a, m, b, f) \ 324 pf_match_addr(n, a, m, b, f) 325 326#define PF_ACPY(a, b, f) \ 327 pf_addrcpy(a, b, f) 328 329#define PF_AINC(a, f) \ 330 pf_addr_inc(a, f) 331 332#define PF_POOLMASK(a, b, c, d, f) \ 333 pf_poolmask(a, b, c, d, f) 334 335#else 336 337/* Just IPv4 */ 338#ifdef PF_INET_ONLY 339 340#define PF_AEQ(a, b, c) \ 341 ((a)->addr32[0] == (b)->addr32[0]) 342 343#define PF_ANEQ(a, b, c) \ 344 ((a)->addr32[0] != (b)->addr32[0]) 345 346#define PF_AZERO(a, c) \ 347 (!(a)->addr32[0]) 348 349#define PF_MATCHA(n, a, m, b, f) \ 350 pf_match_addr(n, a, m, b, f) 351 352#define PF_ACPY(a, b, f) \ 353 (a)->v4.s_addr = (b)->v4.s_addr 354 355#define PF_AINC(a, f) \ 356 do { \ 357 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \ 358 } while (0) 359 360#define PF_POOLMASK(a, b, c, d, f) \ 361 do { \ 362 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \ 363 (((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \ 364 } while (0) 365 366#endif /* PF_INET_ONLY */ 367#endif /* PF_INET6_ONLY */ 368#endif /* PF_INET_INET6 */ 369 370/* 371 * XXX callers not FIB-aware in our version of pf yet. 372 * OpenBSD fixed it later it seems, 2010/05/07 13:33:16 claudio. 373 */ 374#define PF_MISMATCHAW(aw, x, af, neg, ifp, rtid) \ 375 ( \ 376 (((aw)->type == PF_ADDR_NOROUTE && \ 377 pf_routable((x), (af), NULL, (rtid))) || \ 378 (((aw)->type == PF_ADDR_URPFFAILED && (ifp) != NULL && \ 379 pf_routable((x), (af), (ifp), (rtid))) || \ 380 ((aw)->type == PF_ADDR_TABLE && \ 381 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \ 382 ((aw)->type == PF_ADDR_DYNIFTL && \ 383 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \ 384 ((aw)->type == PF_ADDR_RANGE && \ 385 !pf_match_addr_range(&(aw)->v.a.addr, \ 386 &(aw)->v.a.mask, (x), (af))) || \ 387 ((aw)->type == PF_ADDR_ADDRMASK && \ 388 !PF_AZERO(&(aw)->v.a.mask, (af)) && \ 389 !PF_MATCHA(0, &(aw)->v.a.addr, \ 390 &(aw)->v.a.mask, (x), (af))))) != \ 391 (neg) \ 392 ) 393 394 395struct pf_rule_uid { 396 uid_t uid[2]; 397 u_int8_t op; 398}; 399 400struct pf_rule_gid { 401 uid_t gid[2]; 402 u_int8_t op; 403}; 404 405struct pf_rule_addr { 406 struct pf_addr_wrap addr; 407 u_int16_t port[2]; 408 u_int8_t neg; 409 u_int8_t port_op; 410}; 411 412struct pf_pooladdr { 413 struct pf_addr_wrap addr; 414 TAILQ_ENTRY(pf_pooladdr) entries; 415 char ifname[IFNAMSIZ]; 416 struct pfi_kif *kif; 417}; 418 419TAILQ_HEAD(pf_palist, pf_pooladdr); 420 421struct pf_poolhashkey { 422 union { 423 u_int8_t key8[16]; 424 u_int16_t key16[8]; 425 u_int32_t key32[4]; 426 } pfk; /* 128-bit hash key */ 427#define key8 pfk.key8 428#define key16 pfk.key16 429#define key32 pfk.key32 430}; 431 432struct pf_pool { 433 struct pf_palist list; 434 struct pf_pooladdr *cur; 435 struct pf_poolhashkey key; 436 struct pf_addr counter; 437 int tblidx; 438 u_int16_t proxy_port[2]; 439 u_int8_t opts; 440}; 441 442 443/* A packed Operating System description for fingerprinting */ 444typedef u_int32_t pf_osfp_t; 445#define PF_OSFP_ANY ((pf_osfp_t)0) 446#define PF_OSFP_UNKNOWN ((pf_osfp_t)-1) 447#define PF_OSFP_NOMATCH ((pf_osfp_t)-2) 448 449struct pf_osfp_entry { 450 SLIST_ENTRY(pf_osfp_entry) fp_entry; 451 pf_osfp_t fp_os; 452 int fp_enflags; 453#define PF_OSFP_EXPANDED 0x001 /* expanded entry */ 454#define PF_OSFP_GENERIC 0x002 /* generic signature */ 455#define PF_OSFP_NODETAIL 0x004 /* no p0f details */ 456#define PF_OSFP_LEN 32 457 char fp_class_nm[PF_OSFP_LEN]; 458 char fp_version_nm[PF_OSFP_LEN]; 459 char fp_subtype_nm[PF_OSFP_LEN]; 460}; 461#define PF_OSFP_ENTRY_EQ(a, b) \ 462 ((a)->fp_os == (b)->fp_os && \ 463 memcmp((a)->fp_class_nm, (b)->fp_class_nm, PF_OSFP_LEN) == 0 && \ 464 memcmp((a)->fp_version_nm, (b)->fp_version_nm, PF_OSFP_LEN) == 0 && \ 465 memcmp((a)->fp_subtype_nm, (b)->fp_subtype_nm, PF_OSFP_LEN) == 0) 466 467/* handle pf_osfp_t packing */ 468#define _FP_RESERVED_BIT 1 /* For the special negative #defines */ 469#define _FP_UNUSED_BITS 1 470#define _FP_CLASS_BITS 10 /* OS Class (Windows, Linux) */ 471#define _FP_VERSION_BITS 10 /* OS version (95, 98, NT, 2.4.54, 3.2) */ 472#define _FP_SUBTYPE_BITS 10 /* patch level (NT SP4, SP3, ECN patch) */ 473#define PF_OSFP_UNPACK(osfp, class, version, subtype) do { \ 474 (class) = ((osfp) >> (_FP_VERSION_BITS+_FP_SUBTYPE_BITS)) & \ 475 ((1 << _FP_CLASS_BITS) - 1); \ 476 (version) = ((osfp) >> _FP_SUBTYPE_BITS) & \ 477 ((1 << _FP_VERSION_BITS) - 1);\ 478 (subtype) = (osfp) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 479} while(0) 480#define PF_OSFP_PACK(osfp, class, version, subtype) do { \ 481 (osfp) = ((class) & ((1 << _FP_CLASS_BITS) - 1)) << (_FP_VERSION_BITS \ 482 + _FP_SUBTYPE_BITS); \ 483 (osfp) |= ((version) & ((1 << _FP_VERSION_BITS) - 1)) << \ 484 _FP_SUBTYPE_BITS; \ 485 (osfp) |= (subtype) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 486} while(0) 487 488/* the fingerprint of an OSes TCP SYN packet */ 489typedef u_int64_t pf_tcpopts_t; 490struct pf_os_fingerprint { 491 SLIST_HEAD(pf_osfp_enlist, pf_osfp_entry) fp_oses; /* list of matches */ 492 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 493 u_int16_t fp_wsize; /* TCP window size */ 494 u_int16_t fp_psize; /* ip->ip_len */ 495 u_int16_t fp_mss; /* TCP MSS */ 496 u_int16_t fp_flags; 497#define PF_OSFP_WSIZE_MOD 0x0001 /* Window modulus */ 498#define PF_OSFP_WSIZE_DC 0x0002 /* Window don't care */ 499#define PF_OSFP_WSIZE_MSS 0x0004 /* Window multiple of MSS */ 500#define PF_OSFP_WSIZE_MTU 0x0008 /* Window multiple of MTU */ 501#define PF_OSFP_PSIZE_MOD 0x0010 /* packet size modulus */ 502#define PF_OSFP_PSIZE_DC 0x0020 /* packet size don't care */ 503#define PF_OSFP_WSCALE 0x0040 /* TCP window scaling */ 504#define PF_OSFP_WSCALE_MOD 0x0080 /* TCP window scale modulus */ 505#define PF_OSFP_WSCALE_DC 0x0100 /* TCP window scale dont-care */ 506#define PF_OSFP_MSS 0x0200 /* TCP MSS */ 507#define PF_OSFP_MSS_MOD 0x0400 /* TCP MSS modulus */ 508#define PF_OSFP_MSS_DC 0x0800 /* TCP MSS dont-care */ 509#define PF_OSFP_DF 0x1000 /* IPv4 don't fragment bit */ 510#define PF_OSFP_TS0 0x2000 /* Zero timestamp */ 511#define PF_OSFP_INET6 0x4000 /* IPv6 */ 512 u_int8_t fp_optcnt; /* TCP option count */ 513 u_int8_t fp_wscale; /* TCP window scaling */ 514 u_int8_t fp_ttl; /* IPv4 TTL */ 515#define PF_OSFP_MAXTTL_OFFSET 40 516/* TCP options packing */ 517#define PF_OSFP_TCPOPT_NOP 0x0 /* TCP NOP option */ 518#define PF_OSFP_TCPOPT_WSCALE 0x1 /* TCP window scaling option */ 519#define PF_OSFP_TCPOPT_MSS 0x2 /* TCP max segment size opt */ 520#define PF_OSFP_TCPOPT_SACK 0x3 /* TCP SACK OK option */ 521#define PF_OSFP_TCPOPT_TS 0x4 /* TCP timestamp option */ 522#define PF_OSFP_TCPOPT_BITS 3 /* bits used by each option */ 523#define PF_OSFP_MAX_OPTS \ 524 (sizeof(((struct pf_os_fingerprint *)0)->fp_tcpopts) * 8) \ 525 / PF_OSFP_TCPOPT_BITS 526 527 SLIST_ENTRY(pf_os_fingerprint) fp_next; 528}; 529 530struct pf_osfp_ioctl { 531 struct pf_osfp_entry fp_os; 532 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 533 u_int16_t fp_wsize; /* TCP window size */ 534 u_int16_t fp_psize; /* ip->ip_len */ 535 u_int16_t fp_mss; /* TCP MSS */ 536 u_int16_t fp_flags; 537 u_int8_t fp_optcnt; /* TCP option count */ 538 u_int8_t fp_wscale; /* TCP window scaling */ 539 u_int8_t fp_ttl; /* IPv4 TTL */ 540 541 int fp_getnum; /* DIOCOSFPGET number */ 542}; 543 544 545union pf_rule_ptr { 546 struct pf_rule *ptr; 547 u_int32_t nr; 548}; 549 550#define PF_ANCHOR_NAME_SIZE 64 551 552struct pf_rule { 553 struct pf_rule_addr src; 554 struct pf_rule_addr dst; 555#define PF_SKIP_IFP 0 556#define PF_SKIP_DIR 1 557#define PF_SKIP_AF 2 558#define PF_SKIP_PROTO 3 559#define PF_SKIP_SRC_ADDR 4 560#define PF_SKIP_SRC_PORT 5 561#define PF_SKIP_DST_ADDR 6 562#define PF_SKIP_DST_PORT 7 563#define PF_SKIP_COUNT 8 564 union pf_rule_ptr skip[PF_SKIP_COUNT]; 565#define PF_RULE_LABEL_SIZE 64 566 char label[PF_RULE_LABEL_SIZE]; 567#define PF_QNAME_SIZE 64 568 char ifname[IFNAMSIZ]; 569 char qname[PF_QNAME_SIZE]; 570 char pqname[PF_QNAME_SIZE]; 571#define PF_TAG_NAME_SIZE 64 572 char tagname[PF_TAG_NAME_SIZE]; 573 char match_tagname[PF_TAG_NAME_SIZE]; 574 575 char overload_tblname[PF_TABLE_NAME_SIZE]; 576 577 TAILQ_ENTRY(pf_rule) entries; 578 struct pf_pool rpool; 579 580 u_int64_t evaluations; 581 u_int64_t packets[2]; 582 u_int64_t bytes[2]; 583 584 struct pfi_kif *kif; 585 struct pf_anchor *anchor; 586 struct pfr_ktable *overload_tbl; 587 588 pf_osfp_t os_fingerprint; 589 590 int rtableid; 591 u_int32_t timeout[PFTM_MAX]; 592 u_int32_t states_cur; 593 u_int32_t states_tot; 594 u_int32_t max_states; 595 u_int32_t src_nodes; 596 u_int32_t max_src_nodes; 597 u_int32_t max_src_states; 598 u_int32_t spare1; /* netgraph */ 599 u_int32_t max_src_conn; 600 struct { 601 u_int32_t limit; 602 u_int32_t seconds; 603 } max_src_conn_rate; 604 u_int32_t qid; 605 u_int32_t pqid; 606 u_int32_t rt_listid; 607 u_int32_t nr; 608 u_int32_t prob; 609 uid_t cuid; 610 pid_t cpid; 611 612 u_int16_t return_icmp; 613 u_int16_t return_icmp6; 614 u_int16_t max_mss; 615 u_int16_t tag; 616 u_int16_t match_tag; 617 u_int16_t spare2; /* netgraph */ 618 619 struct pf_rule_uid uid; 620 struct pf_rule_gid gid; 621 622 u_int32_t rule_flag; 623 u_int8_t action; 624 u_int8_t direction; 625 u_int8_t log; 626 u_int8_t logif; 627 u_int8_t quick; 628 u_int8_t ifnot; 629 u_int8_t match_tag_not; 630 u_int8_t natpass; 631 632#define PF_STATE_NORMAL 0x1 633#define PF_STATE_MODULATE 0x2 634#define PF_STATE_SYNPROXY 0x3 635 u_int8_t keep_state; 636 sa_family_t af; 637 u_int8_t proto; 638 u_int8_t type; 639 u_int8_t code; 640 u_int8_t flags; 641 u_int8_t flagset; 642 u_int8_t min_ttl; 643 u_int8_t allow_opts; 644 u_int8_t rt; 645 u_int8_t return_ttl; 646 u_int8_t tos; 647 u_int8_t set_tos; 648 u_int8_t anchor_relative; 649 u_int8_t anchor_wildcard; 650 651#define PF_FLUSH 0x01 652#define PF_FLUSH_GLOBAL 0x02 653 u_int8_t flush; 654 655 struct { 656 struct pf_addr addr; 657 u_int16_t port; 658 } divert; 659}; 660 661/* rule flags */ 662#define PFRULE_DROP 0x0000 663#define PFRULE_RETURNRST 0x0001 664#define PFRULE_FRAGMENT 0x0002 665#define PFRULE_RETURNICMP 0x0004 666#define PFRULE_RETURN 0x0008 667#define PFRULE_NOSYNC 0x0010 668#define PFRULE_SRCTRACK 0x0020 /* track source states */ 669#define PFRULE_RULESRCTRACK 0x0040 /* per rule */ 670#define PFRULE_REFS 0x0080 /* rule has references */ 671 672/* scrub flags */ 673#define PFRULE_NODF 0x0100 674#define PFRULE_FRAGCROP 0x0200 /* non-buffering frag cache */ 675#define PFRULE_FRAGDROP 0x0400 /* drop funny fragments */ 676#define PFRULE_RANDOMID 0x0800 677#define PFRULE_REASSEMBLE_TCP 0x1000 678#define PFRULE_SET_TOS 0x2000 679 680/* rule flags again */ 681#define PFRULE_IFBOUND 0x00010000 /* if-bound */ 682#define PFRULE_STATESLOPPY 0x00020000 /* sloppy state tracking */ 683 684#define PFSTATE_HIWAT 10000 /* default state table size */ 685#define PFSTATE_ADAPT_START 6000 /* default adaptive timeout start */ 686#define PFSTATE_ADAPT_END 12000 /* default adaptive timeout end */ 687 688 689struct pf_threshold { 690 u_int32_t limit; 691#define PF_THRESHOLD_MULT 1000 692#define PF_THRESHOLD_MAX 0xffffffff / PF_THRESHOLD_MULT 693 u_int32_t seconds; 694 u_int32_t count; 695 u_int32_t last; 696}; 697 698struct pf_src_node { 699 LIST_ENTRY(pf_src_node) entry; 700 struct pf_addr addr; 701 struct pf_addr raddr; 702 union pf_rule_ptr rule; 703 struct pfi_kif *kif; 704 u_int64_t bytes[2]; 705 u_int64_t packets[2]; 706 u_int32_t states; 707 u_int32_t conn; 708 struct pf_threshold conn_rate; 709 u_int32_t creation; 710 u_int32_t expire; 711 sa_family_t af; 712 u_int8_t ruletype; 713}; 714 715#define PFSNODE_HIWAT 10000 /* default source node table size */ 716 717struct pf_state_scrub { 718 struct timeval pfss_last; /* time received last packet */ 719 u_int32_t pfss_tsecr; /* last echoed timestamp */ 720 u_int32_t pfss_tsval; /* largest timestamp */ 721 u_int32_t pfss_tsval0; /* original timestamp */ 722 u_int16_t pfss_flags; 723#define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */ 724#define PFSS_PAWS 0x0010 /* stricter PAWS checks */ 725#define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */ 726#define PFSS_DATA_TS 0x0040 /* timestamp on data packets */ 727#define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */ 728 u_int8_t pfss_ttl; /* stashed TTL */ 729 u_int8_t pad; 730 u_int32_t pfss_ts_mod; /* timestamp modulation */ 731}; 732 733struct pf_state_host { 734 struct pf_addr addr; 735 u_int16_t port; 736 u_int16_t pad; 737}; 738 739struct pf_state_peer { 740 struct pf_state_scrub *scrub; /* state is scrubbed */ 741 u_int32_t seqlo; /* Max sequence number sent */ 742 u_int32_t seqhi; /* Max the other end ACKd + win */ 743 u_int32_t seqdiff; /* Sequence number modulator */ 744 u_int16_t max_win; /* largest window (pre scaling) */ 745 u_int16_t mss; /* Maximum segment size option */ 746 u_int8_t state; /* active state level */ 747 u_int8_t wscale; /* window scaling factor */ 748 u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */ 749 u_int8_t pad[1]; 750}; 751 752/* Keep synced with struct pf_state_key. */ 753struct pf_state_key_cmp { 754 struct pf_addr addr[2]; 755 u_int16_t port[2]; 756 sa_family_t af; 757 u_int8_t proto; 758 u_int8_t pad[2]; 759}; 760 761struct pf_state_key { 762 struct pf_addr addr[2]; 763 u_int16_t port[2]; 764 sa_family_t af; 765 u_int8_t proto; 766 u_int8_t pad[2]; 767 768 LIST_ENTRY(pf_state_key) entry; 769 TAILQ_HEAD(, pf_state) states[2]; 770}; 771 772/* Keep synced with struct pf_state. */ 773struct pf_state_cmp { 774 u_int64_t id; 775 u_int32_t creatorid; 776 u_int8_t direction; 777 u_int8_t pad[3]; 778}; 779 780struct pf_state { 781 u_int64_t id; 782 u_int32_t creatorid; 783 u_int8_t direction; 784 u_int8_t pad[3]; 785 786 u_int refs; 787 TAILQ_ENTRY(pf_state) sync_list; 788 TAILQ_ENTRY(pf_state) key_list[2]; 789 LIST_ENTRY(pf_state) entry; 790 struct pf_state_peer src; 791 struct pf_state_peer dst; 792 union pf_rule_ptr rule; 793 union pf_rule_ptr anchor; 794 union pf_rule_ptr nat_rule; 795 struct pf_addr rt_addr; 796 struct pf_state_key *key[2]; /* addresses stack and wire */ 797 struct pfi_kif *kif; 798 struct pfi_kif *rt_kif; 799 struct pf_src_node *src_node; 800 struct pf_src_node *nat_src_node; 801 u_int64_t packets[2]; 802 u_int64_t bytes[2]; 803 u_int32_t creation; 804 u_int32_t expire; 805 u_int32_t pfsync_time; 806 u_int16_t tag; 807 u_int8_t log; 808 u_int8_t state_flags; 809#define PFSTATE_ALLOWOPTS 0x01 810#define PFSTATE_SLOPPY 0x02 811/* was PFSTATE_PFLOW 0x04 */ 812#define PFSTATE_NOSYNC 0x08 813#define PFSTATE_ACK 0x10 814 u_int8_t timeout; 815 u_int8_t sync_state; /* PFSYNC_S_x */ 816 817 /* XXX */ 818 u_int8_t sync_updates; 819 u_int8_t _tail[3]; 820}; 821 822/* 823 * Unified state structures for pulling states out of the kernel 824 * used by pfsync(4) and the pf(4) ioctl. 825 */ 826struct pfsync_state_scrub { 827 u_int16_t pfss_flags; 828 u_int8_t pfss_ttl; /* stashed TTL */ 829#define PFSYNC_SCRUB_FLAG_VALID 0x01 830 u_int8_t scrub_flag; 831 u_int32_t pfss_ts_mod; /* timestamp modulation */ 832} __packed; 833 834struct pfsync_state_peer { 835 struct pfsync_state_scrub scrub; /* state is scrubbed */ 836 u_int32_t seqlo; /* Max sequence number sent */ 837 u_int32_t seqhi; /* Max the other end ACKd + win */ 838 u_int32_t seqdiff; /* Sequence number modulator */ 839 u_int16_t max_win; /* largest window (pre scaling) */ 840 u_int16_t mss; /* Maximum segment size option */ 841 u_int8_t state; /* active state level */ 842 u_int8_t wscale; /* window scaling factor */ 843 u_int8_t pad[6]; 844} __packed; 845 846struct pfsync_state_key { 847 struct pf_addr addr[2]; 848 u_int16_t port[2]; 849}; 850 851struct pfsync_state { 852 u_int64_t id; 853 char ifname[IFNAMSIZ]; 854 struct pfsync_state_key key[2]; 855 struct pfsync_state_peer src; 856 struct pfsync_state_peer dst; 857 struct pf_addr rt_addr; 858 u_int32_t rule; 859 u_int32_t anchor; 860 u_int32_t nat_rule; 861 u_int32_t creation; 862 u_int32_t expire; 863 u_int32_t packets[2][2]; 864 u_int32_t bytes[2][2]; 865 u_int32_t creatorid; 866 sa_family_t af; 867 u_int8_t proto; 868 u_int8_t direction; 869 u_int8_t __spare[2]; 870 u_int8_t log; 871 u_int8_t state_flags; 872 u_int8_t timeout; 873 u_int8_t sync_flags; 874 u_int8_t updates; 875} __packed; 876 877#ifdef _KERNEL 878/* pfsync */ 879typedef int pfsync_state_import_t(struct pfsync_state *, u_int8_t); 880typedef void pfsync_insert_state_t(struct pf_state *); 881typedef void pfsync_update_state_t(struct pf_state *); 882typedef void pfsync_delete_state_t(struct pf_state *); 883typedef void pfsync_clear_states_t(u_int32_t, const char *); 884typedef int pfsync_defer_t(struct pf_state *, struct mbuf *); 885 886extern pfsync_state_import_t *pfsync_state_import_ptr; 887extern pfsync_insert_state_t *pfsync_insert_state_ptr; 888extern pfsync_update_state_t *pfsync_update_state_ptr; 889extern pfsync_delete_state_t *pfsync_delete_state_ptr; 890extern pfsync_clear_states_t *pfsync_clear_states_ptr; 891extern pfsync_defer_t *pfsync_defer_ptr; 892 893void pfsync_state_export(struct pfsync_state *, 894 struct pf_state *); 895 896/* pflog */ 897struct pf_ruleset; 898struct pf_pdesc; 899typedef int pflog_packet_t(struct pfi_kif *, struct mbuf *, sa_family_t, 900 u_int8_t, u_int8_t, struct pf_rule *, struct pf_rule *, 901 struct pf_ruleset *, struct pf_pdesc *, int); 902extern pflog_packet_t *pflog_packet_ptr; 903 904#define V_pf_end_threads VNET(pf_end_threads) 905#endif /* _KERNEL */ 906 907#define PFSYNC_FLAG_SRCNODE 0x04 908#define PFSYNC_FLAG_NATSRCNODE 0x08 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 960TAILQ_HEAD(pf_rulequeue, pf_rule); 961 962struct pf_anchor; 963 964struct 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 981RB_HEAD(pf_anchor_global, pf_anchor); 982RB_HEAD(pf_anchor_node, pf_anchor); 983struct 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}; 994RB_PROTOTYPE(pf_anchor_global, pf_anchor, entry_global, pf_anchor_compare); 995RB_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 (PFR_TFLAG_PERSIST | \ 1008 PFR_TFLAG_CONST | \ 1009 PFR_TFLAG_COUNTERS) 1010#define PFR_TFLAG_SETMASK (PFR_TFLAG_ACTIVE | \ 1011 PFR_TFLAG_INACTIVE | \ 1012 PFR_TFLAG_REFERENCED | \ 1013 PFR_TFLAG_REFDANCHOR) 1014#define PFR_TFLAG_ALLMASK (PFR_TFLAG_PERSIST | \ 1015 PFR_TFLAG_CONST | \ 1016 PFR_TFLAG_ACTIVE | \ 1017 PFR_TFLAG_INACTIVE | \ 1018 PFR_TFLAG_REFERENCED | \ 1019 PFR_TFLAG_REFDANCHOR | \ 1020 PFR_TFLAG_COUNTERS) 1021 1022struct pfr_table { 1023 char pfrt_anchor[MAXPATHLEN]; 1024 char pfrt_name[PF_TABLE_NAME_SIZE]; 1025 u_int32_t pfrt_flags; 1026 u_int8_t pfrt_fback; 1027}; 1028 1029enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED, 1030 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE, 1031 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_NOCOUNT, PFR_FB_MAX }; 1032 1033struct pfr_addr { 1034 union { 1035 struct in_addr _pfra_ip4addr; 1036 struct in6_addr _pfra_ip6addr; 1037 } pfra_u; 1038 u_int8_t pfra_af; 1039 u_int8_t pfra_net; 1040 u_int8_t pfra_not; 1041 u_int8_t pfra_fback; 1042}; 1043#define pfra_ip4addr pfra_u._pfra_ip4addr 1044#define pfra_ip6addr pfra_u._pfra_ip6addr 1045 1046enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX }; 1047enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX }; 1048#define PFR_OP_XPASS PFR_OP_ADDR_MAX 1049 1050struct pfr_astats { 1051 struct pfr_addr pfras_a; 1052 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1053 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1054 long pfras_tzero; 1055}; 1056 1057enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX }; 1058 1059struct pfr_tstats { 1060 struct pfr_table pfrts_t; 1061 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1062 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1063 u_int64_t pfrts_match; 1064 u_int64_t pfrts_nomatch; 1065 long pfrts_tzero; 1066 int pfrts_cnt; 1067 int pfrts_refcnt[PFR_REFCNT_MAX]; 1068}; 1069#define pfrts_name pfrts_t.pfrt_name 1070#define pfrts_flags pfrts_t.pfrt_flags 1071 1072#ifndef _SOCKADDR_UNION_DEFINED 1073#define _SOCKADDR_UNION_DEFINED 1074union sockaddr_union { 1075 struct sockaddr sa; 1076 struct sockaddr_in sin; 1077 struct sockaddr_in6 sin6; 1078}; 1079#endif /* _SOCKADDR_UNION_DEFINED */ 1080 1081struct pfr_kcounters { 1082 u_int64_t pfrkc_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1083 u_int64_t pfrkc_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1084}; 1085 1086SLIST_HEAD(pfr_kentryworkq, pfr_kentry); 1087struct pfr_kentry { 1088 struct radix_node pfrke_node[2]; 1089 union sockaddr_union pfrke_sa; 1090 SLIST_ENTRY(pfr_kentry) pfrke_workq; 1091 struct pfr_kcounters *pfrke_counters; 1092 long pfrke_tzero; 1093 u_int8_t pfrke_af; 1094 u_int8_t pfrke_net; 1095 u_int8_t pfrke_not; 1096 u_int8_t pfrke_mark; 1097}; 1098 1099SLIST_HEAD(pfr_ktableworkq, pfr_ktable); 1100RB_HEAD(pfr_ktablehead, pfr_ktable); 1101struct pfr_ktable { 1102 struct pfr_tstats pfrkt_ts; 1103 RB_ENTRY(pfr_ktable) pfrkt_tree; 1104 SLIST_ENTRY(pfr_ktable) pfrkt_workq; 1105 struct radix_node_head *pfrkt_ip4; 1106 struct radix_node_head *pfrkt_ip6; 1107 struct pfr_ktable *pfrkt_shadow; 1108 struct pfr_ktable *pfrkt_root; 1109 struct pf_ruleset *pfrkt_rs; 1110 long pfrkt_larg; 1111 int pfrkt_nflags; 1112}; 1113#define pfrkt_t pfrkt_ts.pfrts_t 1114#define pfrkt_name pfrkt_t.pfrt_name 1115#define pfrkt_anchor pfrkt_t.pfrt_anchor 1116#define pfrkt_ruleset pfrkt_t.pfrt_ruleset 1117#define pfrkt_flags pfrkt_t.pfrt_flags 1118#define pfrkt_cnt pfrkt_ts.pfrts_cnt 1119#define pfrkt_refcnt pfrkt_ts.pfrts_refcnt 1120#define pfrkt_packets pfrkt_ts.pfrts_packets 1121#define pfrkt_bytes pfrkt_ts.pfrts_bytes 1122#define pfrkt_match pfrkt_ts.pfrts_match 1123#define pfrkt_nomatch pfrkt_ts.pfrts_nomatch 1124#define pfrkt_tzero pfrkt_ts.pfrts_tzero 1125 1126/* keep synced with pfi_kif, used in RB_FIND */ 1127struct pfi_kif_cmp { 1128 char pfik_name[IFNAMSIZ]; 1129}; 1130 1131struct pfi_kif { 1132 char pfik_name[IFNAMSIZ]; 1133 union { 1134 RB_ENTRY(pfi_kif) _pfik_tree; 1135 LIST_ENTRY(pfi_kif) _pfik_list; 1136 } _pfik_glue; 1137#define pfik_tree _pfik_glue._pfik_tree 1138#define pfik_list _pfik_glue._pfik_list 1139 u_int64_t pfik_packets[2][2][2]; 1140 u_int64_t pfik_bytes[2][2][2]; 1141 u_int32_t pfik_tzero; 1142 u_int pfik_flags; 1143 struct ifnet *pfik_ifp; 1144 struct ifg_group *pfik_group; 1145 u_int pfik_rulerefs; 1146 TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs; 1147}; 1148 1149#define PFI_IFLAG_REFS 0x0001 /* has state references */ 1150#define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */ 1151 1152struct pf_pdesc { 1153 struct { 1154 int done; 1155 uid_t uid; 1156 gid_t gid; 1157 } lookup; 1158 u_int64_t tot_len; /* Make Mickey money */ 1159 union { 1160 struct tcphdr *tcp; 1161 struct udphdr *udp; 1162 struct icmp *icmp; 1163#ifdef INET6 1164 struct icmp6_hdr *icmp6; 1165#endif /* INET6 */ 1166 void *any; 1167 } hdr; 1168 1169 struct pf_rule *nat_rule; /* nat/rdr rule applied to packet */ 1170 struct pf_addr *src; /* src address */ 1171 struct pf_addr *dst; /* dst address */ 1172 u_int16_t *sport; 1173 u_int16_t *dport; 1174 struct pf_mtag *pf_mtag; 1175 1176 u_int32_t p_len; /* total length of payload */ 1177 1178 u_int16_t *ip_sum; 1179 u_int16_t *proto_sum; 1180 u_int16_t flags; /* Let SCRUB trigger behavior in 1181 * state code. Easier than tags */ 1182#define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */ 1183#define PFDESC_IP_REAS 0x0002 /* IP frags would've been reassembled */ 1184 sa_family_t af; 1185 u_int8_t proto; 1186 u_int8_t tos; 1187 u_int8_t dir; /* direction */ 1188 u_int8_t sidx; /* key index for source */ 1189 u_int8_t didx; /* key index for destination */ 1190}; 1191 1192/* flags for RDR options */ 1193#define PF_DPORT_RANGE 0x01 /* Dest port uses range */ 1194#define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */ 1195 1196/* Reasons code for passing/dropping a packet */ 1197#define PFRES_MATCH 0 /* Explicit match of a rule */ 1198#define PFRES_BADOFF 1 /* Bad offset for pull_hdr */ 1199#define PFRES_FRAG 2 /* Dropping following fragment */ 1200#define PFRES_SHORT 3 /* Dropping short packet */ 1201#define PFRES_NORM 4 /* Dropping by normalizer */ 1202#define PFRES_MEMORY 5 /* Dropped due to lacking mem */ 1203#define PFRES_TS 6 /* Bad TCP Timestamp (RFC1323) */ 1204#define PFRES_CONGEST 7 /* Congestion (of ipintrq) */ 1205#define PFRES_IPOPTIONS 8 /* IP option */ 1206#define PFRES_PROTCKSUM 9 /* Protocol checksum invalid */ 1207#define PFRES_BADSTATE 10 /* State mismatch */ 1208#define PFRES_STATEINS 11 /* State insertion failure */ 1209#define PFRES_MAXSTATES 12 /* State limit */ 1210#define PFRES_SRCLIMIT 13 /* Source node/conn limit */ 1211#define PFRES_SYNPROXY 14 /* SYN proxy */ 1212#define PFRES_MAX 15 /* total+1 */ 1213 1214#define PFRES_NAMES { \ 1215 "match", \ 1216 "bad-offset", \ 1217 "fragment", \ 1218 "short", \ 1219 "normalize", \ 1220 "memory", \ 1221 "bad-timestamp", \ 1222 "congestion", \ 1223 "ip-option", \ 1224 "proto-cksum", \ 1225 "state-mismatch", \ 1226 "state-insert", \ 1227 "state-limit", \ 1228 "src-limit", \ 1229 "synproxy", \ 1230 NULL \ 1231} 1232 1233/* Counters for other things we want to keep track of */ 1234#define LCNT_STATES 0 /* states */ 1235#define LCNT_SRCSTATES 1 /* max-src-states */ 1236#define LCNT_SRCNODES 2 /* max-src-nodes */ 1237#define LCNT_SRCCONN 3 /* max-src-conn */ 1238#define LCNT_SRCCONNRATE 4 /* max-src-conn-rate */ 1239#define LCNT_OVERLOAD_TABLE 5 /* entry added to overload table */ 1240#define LCNT_OVERLOAD_FLUSH 6 /* state entries flushed */ 1241#define LCNT_MAX 7 /* total+1 */ 1242 1243#define LCNT_NAMES { \ 1244 "max states per rule", \ 1245 "max-src-states", \ 1246 "max-src-nodes", \ 1247 "max-src-conn", \ 1248 "max-src-conn-rate", \ 1249 "overload table insertion", \ 1250 "overload flush states", \ 1251 NULL \ 1252} 1253 1254/* UDP state enumeration */ 1255#define PFUDPS_NO_TRAFFIC 0 1256#define PFUDPS_SINGLE 1 1257#define PFUDPS_MULTIPLE 2 1258 1259#define PFUDPS_NSTATES 3 /* number of state levels */ 1260 1261#define PFUDPS_NAMES { \ 1262 "NO_TRAFFIC", \ 1263 "SINGLE", \ 1264 "MULTIPLE", \ 1265 NULL \ 1266} 1267 1268/* Other protocol state enumeration */ 1269#define PFOTHERS_NO_TRAFFIC 0 1270#define PFOTHERS_SINGLE 1 1271#define PFOTHERS_MULTIPLE 2 1272 1273#define PFOTHERS_NSTATES 3 /* number of state levels */ 1274 1275#define PFOTHERS_NAMES { \ 1276 "NO_TRAFFIC", \ 1277 "SINGLE", \ 1278 "MULTIPLE", \ 1279 NULL \ 1280} 1281 1282#define FCNT_STATE_SEARCH 0 1283#define FCNT_STATE_INSERT 1 1284#define FCNT_STATE_REMOVALS 2 1285#define FCNT_MAX 3 1286 1287#define SCNT_SRC_NODE_SEARCH 0 1288#define SCNT_SRC_NODE_INSERT 1 1289#define SCNT_SRC_NODE_REMOVALS 2 1290#define SCNT_MAX 3 1291 1292#define ACTION_SET(a, x) \ 1293 do { \ 1294 if ((a) != NULL) \ 1295 *(a) = (x); \ 1296 } while (0) 1297 1298#define REASON_SET(a, x) \ 1299 do { \ 1300 if ((a) != NULL) \ 1301 *(a) = (x); \ 1302 if (x < PFRES_MAX) \ 1303 V_pf_status.counters[x]++; \ 1304 } while (0) 1305 1306struct pf_status { 1307 u_int64_t counters[PFRES_MAX]; 1308 u_int64_t lcounters[LCNT_MAX]; /* limit counters */ 1309 u_int64_t fcounters[FCNT_MAX]; 1310 u_int64_t scounters[SCNT_MAX]; 1311 u_int64_t pcounters[2][2][3]; 1312 u_int64_t bcounters[2][2]; 1313 u_int32_t running; 1314 u_int32_t states; 1315 u_int32_t src_nodes; 1316 u_int32_t since; 1317 u_int32_t debug; 1318 u_int32_t hostid; 1319 char ifname[IFNAMSIZ]; 1320 u_int8_t pf_chksum[PF_MD5_DIGEST_LENGTH]; 1321}; 1322 1323struct cbq_opts { 1324 u_int minburst; 1325 u_int maxburst; 1326 u_int pktsize; 1327 u_int maxpktsize; 1328 u_int ns_per_byte; 1329 u_int maxidle; 1330 int minidle; 1331 u_int offtime; 1332 int flags; 1333}; 1334 1335struct priq_opts { 1336 int flags; 1337}; 1338 1339struct hfsc_opts { 1340 /* real-time service curve */ 1341 u_int rtsc_m1; /* slope of the 1st segment in bps */ 1342 u_int rtsc_d; /* the x-projection of m1 in msec */ 1343 u_int rtsc_m2; /* slope of the 2nd segment in bps */ 1344 /* link-sharing service curve */ 1345 u_int lssc_m1; 1346 u_int lssc_d; 1347 u_int lssc_m2; 1348 /* upper-limit service curve */ 1349 u_int ulsc_m1; 1350 u_int ulsc_d; 1351 u_int ulsc_m2; 1352 int flags; 1353}; 1354 1355struct pf_altq { 1356 char ifname[IFNAMSIZ]; 1357 1358 void *altq_disc; /* discipline-specific state */ 1359 TAILQ_ENTRY(pf_altq) entries; 1360 1361 /* scheduler spec */ 1362 u_int8_t scheduler; /* scheduler type */ 1363 u_int16_t tbrsize; /* tokenbucket regulator size */ 1364 u_int32_t ifbandwidth; /* interface bandwidth */ 1365 1366 /* queue spec */ 1367 char qname[PF_QNAME_SIZE]; /* queue name */ 1368 char parent[PF_QNAME_SIZE]; /* parent name */ 1369 u_int32_t parent_qid; /* parent queue id */ 1370 u_int32_t bandwidth; /* queue bandwidth */ 1371 u_int8_t priority; /* priority */ 1372 u_int8_t local_flags; /* dynamic interface */ 1373#define PFALTQ_FLAG_IF_REMOVED 0x01 1374 1375 u_int16_t qlimit; /* queue size limit */ 1376 u_int16_t flags; /* misc flags */ 1377 union { 1378 struct cbq_opts cbq_opts; 1379 struct priq_opts priq_opts; 1380 struct hfsc_opts hfsc_opts; 1381 } pq_u; 1382 1383 u_int32_t qid; /* return value */ 1384}; 1385 1386struct pf_divert { 1387 union { 1388 struct in_addr ipv4; 1389 struct in6_addr ipv6; 1390 } addr; 1391 u_int16_t port; 1392}; 1393 1394#define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */ 1395#define PFR_KENTRY_HIWAT 200000 /* Number of table entries */ 1396 1397/* 1398 * ioctl parameter structures 1399 */ 1400 1401struct pfioc_pooladdr { 1402 u_int32_t action; 1403 u_int32_t ticket; 1404 u_int32_t nr; 1405 u_int32_t r_num; 1406 u_int8_t r_action; 1407 u_int8_t r_last; 1408 u_int8_t af; 1409 char anchor[MAXPATHLEN]; 1410 struct pf_pooladdr addr; 1411}; 1412 1413struct pfioc_rule { 1414 u_int32_t action; 1415 u_int32_t ticket; 1416 u_int32_t pool_ticket; 1417 u_int32_t nr; 1418 char anchor[MAXPATHLEN]; 1419 char anchor_call[MAXPATHLEN]; 1420 struct pf_rule rule; 1421}; 1422 1423struct pfioc_natlook { 1424 struct pf_addr saddr; 1425 struct pf_addr daddr; 1426 struct pf_addr rsaddr; 1427 struct pf_addr rdaddr; 1428 u_int16_t sport; 1429 u_int16_t dport; 1430 u_int16_t rsport; 1431 u_int16_t rdport; 1432 sa_family_t af; 1433 u_int8_t proto; 1434 u_int8_t direction; 1435}; 1436 1437struct pfioc_state { 1438 struct pfsync_state state; 1439}; 1440 1441struct pfioc_src_node_kill { 1442 sa_family_t psnk_af; 1443 struct pf_rule_addr psnk_src; 1444 struct pf_rule_addr psnk_dst; 1445 u_int psnk_killed; 1446}; 1447 1448struct pfioc_state_kill { 1449 struct pf_state_cmp psk_pfcmp; 1450 sa_family_t psk_af; 1451 int psk_proto; 1452 struct pf_rule_addr psk_src; 1453 struct pf_rule_addr psk_dst; 1454 char psk_ifname[IFNAMSIZ]; 1455 char psk_label[PF_RULE_LABEL_SIZE]; 1456 u_int psk_killed; 1457}; 1458 1459struct pfioc_states { 1460 int ps_len; 1461 union { 1462 caddr_t psu_buf; 1463 struct pfsync_state *psu_states; 1464 } ps_u; 1465#define ps_buf ps_u.psu_buf 1466#define ps_states ps_u.psu_states 1467}; 1468 1469struct pfioc_src_nodes { 1470 int psn_len; 1471 union { 1472 caddr_t psu_buf; 1473 struct pf_src_node *psu_src_nodes; 1474 } psn_u; 1475#define psn_buf psn_u.psu_buf 1476#define psn_src_nodes psn_u.psu_src_nodes 1477}; 1478 1479struct pfioc_if { 1480 char ifname[IFNAMSIZ]; 1481}; 1482 1483struct pfioc_tm { 1484 int timeout; 1485 int seconds; 1486}; 1487 1488struct pfioc_limit { 1489 int index; 1490 unsigned limit; 1491}; 1492 1493struct pfioc_altq { 1494 u_int32_t action; 1495 u_int32_t ticket; 1496 u_int32_t nr; 1497 struct pf_altq altq; 1498}; 1499 1500struct pfioc_qstats { 1501 u_int32_t ticket; 1502 u_int32_t nr; 1503 void *buf; 1504 int nbytes; 1505 u_int8_t scheduler; 1506}; 1507 1508struct pfioc_ruleset { 1509 u_int32_t nr; 1510 char path[MAXPATHLEN]; 1511 char name[PF_ANCHOR_NAME_SIZE]; 1512}; 1513 1514#define PF_RULESET_ALTQ (PF_RULESET_MAX) 1515#define PF_RULESET_TABLE (PF_RULESET_MAX+1) 1516struct pfioc_trans { 1517 int size; /* number of elements */ 1518 int esize; /* size of each element in bytes */ 1519 struct pfioc_trans_e { 1520 int rs_num; 1521 char anchor[MAXPATHLEN]; 1522 u_int32_t ticket; 1523 } *array; 1524}; 1525 1526#define PFR_FLAG_ATOMIC 0x00000001 /* unused */ 1527#define PFR_FLAG_DUMMY 0x00000002 1528#define PFR_FLAG_FEEDBACK 0x00000004 1529#define PFR_FLAG_CLSTATS 0x00000008 1530#define PFR_FLAG_ADDRSTOO 0x00000010 1531#define PFR_FLAG_REPLACE 0x00000020 1532#define PFR_FLAG_ALLRSETS 0x00000040 1533#define PFR_FLAG_ALLMASK 0x0000007F 1534#ifdef _KERNEL 1535#define PFR_FLAG_USERIOCTL 0x10000000 1536#endif 1537 1538struct pfioc_table { 1539 struct pfr_table pfrio_table; 1540 void *pfrio_buffer; 1541 int pfrio_esize; 1542 int pfrio_size; 1543 int pfrio_size2; 1544 int pfrio_nadd; 1545 int pfrio_ndel; 1546 int pfrio_nchange; 1547 int pfrio_flags; 1548 u_int32_t pfrio_ticket; 1549}; 1550#define pfrio_exists pfrio_nadd 1551#define pfrio_nzero pfrio_nadd 1552#define pfrio_nmatch pfrio_nadd 1553#define pfrio_naddr pfrio_size2 1554#define pfrio_setflag pfrio_size2 1555#define pfrio_clrflag pfrio_nadd 1556 1557struct pfioc_iface { 1558 char pfiio_name[IFNAMSIZ]; 1559 void *pfiio_buffer; 1560 int pfiio_esize; 1561 int pfiio_size; 1562 int pfiio_nzero; 1563 int pfiio_flags; 1564}; 1565 1566 1567/* 1568 * ioctl operations 1569 */ 1570 1571#define DIOCSTART _IO ('D', 1) 1572#define DIOCSTOP _IO ('D', 2) 1573#define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule) 1574#define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule) 1575#define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule) 1576/* XXX cut 8 - 17 */ 1577#define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill) 1578#define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state) 1579#define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if) 1580#define DIOCGETSTATUS _IOWR('D', 21, struct pf_status) 1581#define DIOCCLRSTATUS _IO ('D', 22) 1582#define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook) 1583#define DIOCSETDEBUG _IOWR('D', 24, u_int32_t) 1584#define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states) 1585#define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule) 1586/* XXX cut 26 - 28 */ 1587#define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm) 1588#define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm) 1589#define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state) 1590#define DIOCCLRRULECTRS _IO ('D', 38) 1591#define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit) 1592#define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit) 1593#define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill) 1594#define DIOCSTARTALTQ _IO ('D', 42) 1595#define DIOCSTOPALTQ _IO ('D', 43) 1596#define DIOCADDALTQ _IOWR('D', 45, struct pfioc_altq) 1597#define DIOCGETALTQS _IOWR('D', 47, struct pfioc_altq) 1598#define DIOCGETALTQ _IOWR('D', 48, struct pfioc_altq) 1599#define DIOCCHANGEALTQ _IOWR('D', 49, struct pfioc_altq) 1600#define DIOCGETQSTATS _IOWR('D', 50, struct pfioc_qstats) 1601#define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr) 1602#define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr) 1603#define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr) 1604#define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr) 1605#define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr) 1606/* XXX cut 55 - 57 */ 1607#define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset) 1608#define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset) 1609#define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table) 1610#define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table) 1611#define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table) 1612#define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table) 1613#define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table) 1614#define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table) 1615#define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table) 1616#define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table) 1617#define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table) 1618#define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table) 1619#define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table) 1620#define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table) 1621#define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table) 1622#define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table) 1623#define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table) 1624#define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table) 1625#define DIOCOSFPFLUSH _IO('D', 78) 1626#define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl) 1627#define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl) 1628#define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans) 1629#define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans) 1630#define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans) 1631#define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes) 1632#define DIOCCLRSRCNODES _IO('D', 85) 1633#define DIOCSETHOSTID _IOWR('D', 86, u_int32_t) 1634#define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface) 1635#define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface) 1636#define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface) 1637#define DIOCKILLSRCNODES _IOWR('D', 91, struct pfioc_src_node_kill) 1638struct pf_ifspeed { 1639 char ifname[IFNAMSIZ]; 1640 u_int32_t baudrate; 1641}; 1642#define DIOCGIFSPEED _IOWR('D', 92, struct pf_ifspeed) 1643 1644#ifdef _KERNEL 1645struct pf_srchash { 1646 LIST_HEAD(, pf_src_node) nodes; 1647 struct mtx lock; 1648}; 1649 1650struct pf_keyhash { 1651 LIST_HEAD(, pf_state_key) keys; 1652 struct mtx lock; 1653}; 1654 1655struct pf_idhash { 1656 LIST_HEAD(, pf_state) states; 1657 struct mtx lock; 1658}; 1659 1660#define PF_HASHSIZ (32768) 1661VNET_DECLARE(struct pf_keyhash *, pf_keyhash); 1662VNET_DECLARE(struct pf_idhash *, pf_idhash); 1663VNET_DECLARE(u_long, pf_hashmask); 1664#define V_pf_keyhash VNET(pf_keyhash) 1665#define V_pf_idhash VNET(pf_idhash) 1666#define V_pf_hashmask VNET(pf_hashmask) 1667VNET_DECLARE(struct pf_srchash *, pf_srchash); 1668VNET_DECLARE(u_long, pf_srchashmask); 1669#define V_pf_srchash VNET(pf_srchash) 1670#define V_pf_srchashmask VNET(pf_srchashmask) 1671 1672#define PF_IDHASH(s) (be64toh((s)->id) % (V_pf_hashmask + 1)) 1673 1674VNET_DECLARE(void *, pf_swi_cookie); 1675#define V_pf_swi_cookie VNET(pf_swi_cookie) 1676 1677VNET_DECLARE(uint64_t, pf_stateid[MAXCPU]); 1678#define V_pf_stateid VNET(pf_stateid) 1679 1680TAILQ_HEAD(pf_altqqueue, pf_altq); 1681VNET_DECLARE(struct pf_altqqueue, pf_altqs[2]); 1682#define V_pf_altqs VNET(pf_altqs) 1683VNET_DECLARE(struct pf_palist, pf_pabuf); 1684#define V_pf_pabuf VNET(pf_pabuf) 1685 1686VNET_DECLARE(u_int32_t, ticket_altqs_active); 1687#define V_ticket_altqs_active VNET(ticket_altqs_active) 1688VNET_DECLARE(u_int32_t, ticket_altqs_inactive); 1689#define V_ticket_altqs_inactive VNET(ticket_altqs_inactive) 1690VNET_DECLARE(int, altqs_inactive_open); 1691#define V_altqs_inactive_open VNET(altqs_inactive_open) 1692VNET_DECLARE(u_int32_t, ticket_pabuf); 1693#define V_ticket_pabuf VNET(ticket_pabuf) 1694VNET_DECLARE(struct pf_altqqueue *, pf_altqs_active); 1695#define V_pf_altqs_active VNET(pf_altqs_active) 1696VNET_DECLARE(struct pf_altqqueue *, pf_altqs_inactive); 1697#define V_pf_altqs_inactive VNET(pf_altqs_inactive) 1698 1699VNET_DECLARE(struct pf_rulequeue, pf_unlinked_rules); 1700#define V_pf_unlinked_rules VNET(pf_unlinked_rules) 1701 1702void pf_initialize(void); 1703void pf_cleanup(void); 1704 1705struct pf_mtag *pf_get_mtag(struct mbuf *); 1706 1707extern void pf_calc_skip_steps(struct pf_rulequeue *); 1708#ifdef ALTQ 1709extern void pf_altq_ifnet_event(struct ifnet *, int); 1710#endif 1711VNET_DECLARE(uma_zone_t, pf_state_z); 1712#define V_pf_state_z VNET(pf_state_z) 1713VNET_DECLARE(uma_zone_t, pf_state_key_z); 1714#define V_pf_state_key_z VNET(pf_state_key_z) 1715VNET_DECLARE(uma_zone_t, pf_state_scrub_z); 1716#define V_pf_state_scrub_z VNET(pf_state_scrub_z) 1717 1718extern void pf_purge_thread(void *); 1719extern void pf_intr(void *); 1720extern void pf_purge_expired_src_nodes(void); 1721 1722extern int pf_unlink_state(struct pf_state *, u_int); 1723#define PF_ENTER_LOCKED 0x00000001 1724#define PF_RETURN_LOCKED 0x00000002 1725extern int pf_state_insert(struct pfi_kif *, 1726 struct pf_state_key *, 1727 struct pf_state_key *, 1728 struct pf_state *); 1729extern void pf_free_state(struct pf_state *); 1730 1731static __inline u_int 1732pf_hashsrc(struct pf_addr *addr, sa_family_t af) 1733{ 1734 u_int h; 1735 1736#define ADDR_HASH(a) ((a) ^ ((a) >> 16)) 1737 1738 switch (af) { 1739 case AF_INET: 1740 h = ADDR_HASH(addr->v4.s_addr); 1741 break; 1742 case AF_INET6: 1743 h = ADDR_HASH(addr->v6.__u6_addr.__u6_addr32[3]); 1744 default: 1745 panic("%s: unknown address family %u", __func__, af); 1746 } 1747#undef ADDR_HASH 1748 1749 return (h & V_pf_srchashmask); 1750} 1751 1752static __inline void 1753pf_ref_state(struct pf_state *s) 1754{ 1755 1756 refcount_acquire(&s->refs); 1757} 1758 1759static __inline int 1760pf_release_state(struct pf_state *s) 1761{ 1762 1763 if (refcount_release(&s->refs)) { 1764 pf_free_state(s); 1765 return (1); 1766 } else 1767 return (0); 1768} 1769 1770extern struct pf_state *pf_find_state_byid(uint64_t, uint32_t); 1771extern struct pf_state *pf_find_state_all(struct pf_state_key_cmp *, 1772 u_int, int *); 1773struct pf_src_node *pf_find_src_node(struct pf_addr *, struct pf_rule *, 1774 sa_family_t, int); 1775extern void pf_print_state(struct pf_state *); 1776extern void pf_print_flags(u_int8_t); 1777extern u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t, 1778 u_int8_t); 1779 1780VNET_DECLARE(struct ifnet *, sync_ifp); 1781#define V_sync_ifp VNET(sync_ifp); 1782VNET_DECLARE(struct pf_rule, pf_default_rule); 1783#define V_pf_default_rule VNET(pf_default_rule) 1784extern void pf_addrcpy(struct pf_addr *, struct pf_addr *, 1785 u_int8_t); 1786void pf_free_rule(struct pf_rule *); 1787 1788#ifdef INET 1789int pf_test(int, struct ifnet *, struct mbuf **, struct inpcb *); 1790#endif /* INET */ 1791 1792#ifdef INET6 1793int pf_test6(int, struct ifnet *, struct mbuf **, struct inpcb *); 1794void pf_poolmask(struct pf_addr *, struct pf_addr*, 1795 struct pf_addr *, struct pf_addr *, u_int8_t); 1796void pf_addr_inc(struct pf_addr *, sa_family_t); 1797#endif /* INET6 */ 1798 1799u_int32_t pf_new_isn(struct pf_state *); 1800void *pf_pull_hdr(struct mbuf *, int, void *, int, u_short *, u_short *, 1801 sa_family_t); 1802void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t); 1803void pf_send_deferred_syn(struct pf_state *); 1804int pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *, 1805 struct pf_addr *, sa_family_t); 1806int pf_match_addr_range(struct pf_addr *, struct pf_addr *, 1807 struct pf_addr *, sa_family_t); 1808int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t); 1809 1810void pf_normalize_init(void); 1811void pf_normalize_cleanup(void); 1812int pf_normalize_ip(struct mbuf **, int, struct pfi_kif *, u_short *, 1813 struct pf_pdesc *); 1814int pf_normalize_ip6(struct mbuf **, int, struct pfi_kif *, u_short *, 1815 struct pf_pdesc *); 1816int pf_normalize_tcp(int, struct pfi_kif *, struct mbuf *, int, int, void *, 1817 struct pf_pdesc *); 1818void pf_normalize_tcp_cleanup(struct pf_state *); 1819int pf_normalize_tcp_init(struct mbuf *, int, struct pf_pdesc *, 1820 struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *); 1821int pf_normalize_tcp_stateful(struct mbuf *, int, struct pf_pdesc *, 1822 u_short *, struct tcphdr *, struct pf_state *, 1823 struct pf_state_peer *, struct pf_state_peer *, int *); 1824u_int32_t 1825 pf_state_expires(const struct pf_state *); 1826void pf_purge_expired_fragments(void); 1827int pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kif *, 1828 int); 1829int pf_socket_lookup(int, struct pf_pdesc *, struct mbuf *); 1830struct pf_state_key *pf_alloc_state_key(int); 1831void pfr_initialize(void); 1832void pfr_cleanup(void); 1833int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t); 1834void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t, 1835 u_int64_t, int, int, int); 1836int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, sa_family_t); 1837void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *); 1838struct pfr_ktable * 1839 pfr_attach_table(struct pf_ruleset *, char *); 1840void pfr_detach_table(struct pfr_ktable *); 1841int pfr_clr_tables(struct pfr_table *, int *, int); 1842int pfr_add_tables(struct pfr_table *, int, int *, int); 1843int pfr_del_tables(struct pfr_table *, int, int *, int); 1844int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int); 1845int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int); 1846int pfr_clr_tstats(struct pfr_table *, int, int *, int); 1847int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int); 1848int pfr_clr_addrs(struct pfr_table *, int *, int); 1849int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *, long); 1850int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1851 int); 1852int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1853 int); 1854int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1855 int *, int *, int *, int, u_int32_t); 1856int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int); 1857int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int); 1858int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *, 1859 int); 1860int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1861 int); 1862int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int); 1863int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int); 1864int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int); 1865int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *, 1866 int *, u_int32_t, int); 1867 1868MALLOC_DECLARE(PFI_MTYPE); 1869VNET_DECLARE(struct pfi_kif *, pfi_all); 1870#define V_pfi_all VNET(pfi_all) 1871 1872void pfi_initialize(void); 1873void pfi_cleanup(void); 1874void pfi_kif_ref(struct pfi_kif *); 1875void pfi_kif_unref(struct pfi_kif *); 1876struct pfi_kif *pfi_kif_find(const char *); 1877struct pfi_kif *pfi_kif_attach(struct pfi_kif *, const char *); 1878int pfi_kif_match(struct pfi_kif *, struct pfi_kif *); 1879void pfi_kif_purge(void); 1880int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *, 1881 sa_family_t); 1882int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t); 1883void pfi_dynaddr_remove(struct pfi_dynaddr *); 1884void pfi_dynaddr_copyout(struct pf_addr_wrap *); 1885void pfi_update_status(const char *, struct pf_status *); 1886void pfi_get_ifaces(const char *, struct pfi_kif *, int *); 1887int pfi_set_flags(const char *, int); 1888int pfi_clear_flags(const char *, int); 1889 1890int pf_match_tag(struct mbuf *, struct pf_rule *, int *, int); 1891int pf_tag_packet(struct mbuf *, struct pf_pdesc *, int); 1892void pf_qid2qname(u_int32_t, char *); 1893 1894VNET_DECLARE(struct pf_status, pf_status); 1895#define V_pf_status VNET(pf_status) 1896 1897struct pf_limit { 1898 uma_zone_t zone; 1899 u_int limit; 1900}; 1901VNET_DECLARE(struct pf_limit, pf_limits[PF_LIMIT_MAX]); 1902#define V_pf_limits VNET(pf_limits) 1903 1904#endif /* _KERNEL */ 1905 1906#ifdef _KERNEL 1907VNET_DECLARE(struct pf_anchor_global, pf_anchors); 1908#define V_pf_anchors VNET(pf_anchors) 1909VNET_DECLARE(struct pf_anchor, pf_main_anchor); 1910#define V_pf_main_anchor VNET(pf_main_anchor) 1911#define pf_main_ruleset V_pf_main_anchor.ruleset 1912#endif 1913 1914/* these ruleset functions can be linked into userland programs (pfctl) */ 1915int pf_get_ruleset_number(u_int8_t); 1916void pf_init_ruleset(struct pf_ruleset *); 1917int pf_anchor_setup(struct pf_rule *, 1918 const struct pf_ruleset *, const char *); 1919int pf_anchor_copyout(const struct pf_ruleset *, 1920 const struct pf_rule *, struct pfioc_rule *); 1921void pf_anchor_remove(struct pf_rule *); 1922void pf_remove_if_empty_ruleset(struct pf_ruleset *); 1923struct pf_ruleset *pf_find_ruleset(const char *); 1924struct pf_ruleset *pf_find_or_create_ruleset(const char *); 1925void pf_rs_initialize(void); 1926 1927/* The fingerprint functions can be linked into userland programs (tcpdump) */ 1928int pf_osfp_add(struct pf_osfp_ioctl *); 1929#ifdef _KERNEL 1930struct pf_osfp_enlist * 1931 pf_osfp_fingerprint(struct pf_pdesc *, struct mbuf *, int, 1932 const struct tcphdr *); 1933#endif /* _KERNEL */ 1934void pf_osfp_flush(void); 1935int pf_osfp_get(struct pf_osfp_ioctl *); 1936int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t); 1937 1938#ifdef _KERNEL 1939void pf_print_host(struct pf_addr *, u_int16_t, u_int8_t); 1940 1941void pf_step_into_anchor(int *, struct pf_ruleset **, int, 1942 struct pf_rule **, struct pf_rule **, int *); 1943int pf_step_out_of_anchor(int *, struct pf_ruleset **, 1944 int, struct pf_rule **, struct pf_rule **, 1945 int *); 1946 1947int pf_map_addr(u_int8_t, struct pf_rule *, 1948 struct pf_addr *, struct pf_addr *, 1949 struct pf_addr *, struct pf_src_node **); 1950struct pf_rule *pf_get_translation(struct pf_pdesc *, struct mbuf *, 1951 int, int, struct pfi_kif *, struct pf_src_node **, 1952 struct pf_state_key **, struct pf_state_key **, 1953 struct pf_addr *, struct pf_addr *, 1954 u_int16_t, u_int16_t); 1955 1956struct pf_state_key *pf_state_key_setup(struct pf_pdesc *, struct pf_addr *, 1957 struct pf_addr *, u_int16_t, u_int16_t); 1958struct pf_state_key *pf_state_key_clone(struct pf_state_key *); 1959#endif /* _KERNEL */ 1960 1961#endif /* _NET_PFVAR_H_ */ 1962