pfvar.h revision 261019
1/* 2 * Copyright (c) 2001 Daniel Hartmeier 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 9 * - Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * - Redistributions in binary form must reproduce the above 12 * copyright notice, this list of conditions and the following 13 * disclaimer in the documentation and/or other materials provided 14 * with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 19 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 20 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 22 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 24 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 26 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 27 * POSSIBILITY OF SUCH DAMAGE. 28 * 29 * $OpenBSD: pfvar.h,v 1.282 2009/01/29 15:12:28 pyr Exp $ 30 * $FreeBSD: stable/10/sys/net/pfvar.h 261019 2014-01-22 10:29:15Z glebius $ 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 83/* PFTM default values */ 84#define PFTM_TCP_FIRST_PACKET_VAL 120 /* First TCP packet */ 85#define PFTM_TCP_OPENING_VAL 30 /* No response yet */ 86#define PFTM_TCP_ESTABLISHED_VAL 24*60*60/* Established */ 87#define PFTM_TCP_CLOSING_VAL 15 * 60 /* Half closed */ 88#define PFTM_TCP_FIN_WAIT_VAL 45 /* Got both FINs */ 89#define PFTM_TCP_CLOSED_VAL 90 /* Got a RST */ 90#define PFTM_UDP_FIRST_PACKET_VAL 60 /* First UDP packet */ 91#define PFTM_UDP_SINGLE_VAL 30 /* Unidirectional */ 92#define PFTM_UDP_MULTIPLE_VAL 60 /* Bidirectional */ 93#define PFTM_ICMP_FIRST_PACKET_VAL 20 /* First ICMP packet */ 94#define PFTM_ICMP_ERROR_REPLY_VAL 10 /* Got error response */ 95#define PFTM_OTHER_FIRST_PACKET_VAL 60 /* First packet */ 96#define PFTM_OTHER_SINGLE_VAL 30 /* Unidirectional */ 97#define PFTM_OTHER_MULTIPLE_VAL 60 /* Bidirectional */ 98#define PFTM_FRAG_VAL 30 /* Fragment expire */ 99#define PFTM_INTERVAL_VAL 10 /* Expire interval */ 100#define PFTM_SRC_NODE_VAL 0 /* Source tracking */ 101#define PFTM_TS_DIFF_VAL 30 /* Allowed TS diff */ 102 103enum { PF_NOPFROUTE, PF_FASTROUTE, PF_ROUTETO, PF_DUPTO, PF_REPLYTO }; 104enum { PF_LIMIT_STATES, PF_LIMIT_SRC_NODES, PF_LIMIT_FRAGS, 105 PF_LIMIT_TABLE_ENTRIES, PF_LIMIT_MAX }; 106#define PF_POOL_IDMASK 0x0f 107enum { PF_POOL_NONE, PF_POOL_BITMASK, PF_POOL_RANDOM, 108 PF_POOL_SRCHASH, PF_POOL_ROUNDROBIN }; 109enum { PF_ADDR_ADDRMASK, PF_ADDR_NOROUTE, PF_ADDR_DYNIFTL, 110 PF_ADDR_TABLE, PF_ADDR_URPFFAILED, 111 PF_ADDR_RANGE }; 112#define PF_POOL_TYPEMASK 0x0f 113#define PF_POOL_STICKYADDR 0x20 114#define PF_WSCALE_FLAG 0x80 115#define PF_WSCALE_MASK 0x0f 116 117#define PF_LOG 0x01 118#define PF_LOG_ALL 0x02 119#define PF_LOG_SOCKET_LOOKUP 0x04 120 121struct pf_addr { 122 union { 123 struct in_addr v4; 124 struct in6_addr v6; 125 u_int8_t addr8[16]; 126 u_int16_t addr16[8]; 127 u_int32_t addr32[4]; 128 } pfa; /* 128-bit address */ 129#define v4 pfa.v4 130#define v6 pfa.v6 131#define addr8 pfa.addr8 132#define addr16 pfa.addr16 133#define addr32 pfa.addr32 134}; 135 136#define PF_TABLE_NAME_SIZE 32 137 138#define PFI_AFLAG_NETWORK 0x01 139#define PFI_AFLAG_BROADCAST 0x02 140#define PFI_AFLAG_PEER 0x04 141#define PFI_AFLAG_MODEMASK 0x07 142#define PFI_AFLAG_NOALIAS 0x08 143 144struct pf_addr_wrap { 145 union { 146 struct { 147 struct pf_addr addr; 148 struct pf_addr mask; 149 } a; 150 char ifname[IFNAMSIZ]; 151 char tblname[PF_TABLE_NAME_SIZE]; 152 } v; 153 union { 154 struct pfi_dynaddr *dyn; 155 struct pfr_ktable *tbl; 156 int dyncnt; 157 int tblcnt; 158 } p; 159 u_int8_t type; /* PF_ADDR_* */ 160 u_int8_t iflags; /* PFI_AFLAG_* */ 161}; 162 163#ifdef _KERNEL 164 165struct pfi_dynaddr { 166 TAILQ_ENTRY(pfi_dynaddr) entry; 167 struct pf_addr pfid_addr4; 168 struct pf_addr pfid_mask4; 169 struct pf_addr pfid_addr6; 170 struct pf_addr pfid_mask6; 171 struct pfr_ktable *pfid_kt; 172 struct pfi_kif *pfid_kif; 173 int pfid_net; /* mask or 128 */ 174 int pfid_acnt4; /* address count IPv4 */ 175 int pfid_acnt6; /* address count IPv6 */ 176 sa_family_t pfid_af; /* rule af */ 177 u_int8_t pfid_iflags; /* PFI_AFLAG_* */ 178}; 179 180/* 181 * Address manipulation macros 182 */ 183#define HTONL(x) (x) = htonl((__uint32_t)(x)) 184#define HTONS(x) (x) = htons((__uint16_t)(x)) 185#define NTOHL(x) (x) = ntohl((__uint32_t)(x)) 186#define NTOHS(x) (x) = ntohs((__uint16_t)(x)) 187 188#define PF_NAME "pf" 189 190#define PF_HASHROW_ASSERT(h) mtx_assert(&(h)->lock, MA_OWNED) 191#define PF_HASHROW_LOCK(h) mtx_lock(&(h)->lock) 192#define PF_HASHROW_UNLOCK(h) mtx_unlock(&(h)->lock) 193 194#define PF_STATE_LOCK(s) \ 195 do { \ 196 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(s)]; \ 197 PF_HASHROW_LOCK(_ih); \ 198 } while (0) 199 200#define PF_STATE_UNLOCK(s) \ 201 do { \ 202 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH((s))]; \ 203 PF_HASHROW_UNLOCK(_ih); \ 204 } while (0) 205 206#ifdef INVARIANTS 207#define PF_STATE_LOCK_ASSERT(s) \ 208 do { \ 209 struct pf_idhash *_ih = &V_pf_idhash[PF_IDHASH(s)]; \ 210 PF_HASHROW_ASSERT(_ih); \ 211 } while (0) 212#else /* !INVARIANTS */ 213#define PF_STATE_LOCK_ASSERT(s) do {} while (0) 214#endif /* INVARIANTS */ 215 216extern struct mtx pf_unlnkdrules_mtx; 217#define PF_UNLNKDRULES_LOCK() mtx_lock(&pf_unlnkdrules_mtx) 218#define PF_UNLNKDRULES_UNLOCK() mtx_unlock(&pf_unlnkdrules_mtx) 219 220extern struct rwlock pf_rules_lock; 221#define PF_RULES_RLOCK() rw_rlock(&pf_rules_lock) 222#define PF_RULES_RUNLOCK() rw_runlock(&pf_rules_lock) 223#define PF_RULES_WLOCK() rw_wlock(&pf_rules_lock) 224#define PF_RULES_WUNLOCK() rw_wunlock(&pf_rules_lock) 225#define PF_RULES_ASSERT() rw_assert(&pf_rules_lock, RA_LOCKED) 226#define PF_RULES_RASSERT() rw_assert(&pf_rules_lock, RA_RLOCKED) 227#define PF_RULES_WASSERT() rw_assert(&pf_rules_lock, RA_WLOCKED) 228 229#define PF_MODVER 1 230#define PFLOG_MODVER 1 231#define PFSYNC_MODVER 1 232 233#define PFLOG_MINVER 1 234#define PFLOG_PREFVER PFLOG_MODVER 235#define PFLOG_MAXVER 1 236#define PFSYNC_MINVER 1 237#define PFSYNC_PREFVER PFSYNC_MODVER 238#define PFSYNC_MAXVER 1 239 240#ifdef INET 241#ifndef INET6 242#define PF_INET_ONLY 243#endif /* ! INET6 */ 244#endif /* INET */ 245 246#ifdef INET6 247#ifndef INET 248#define PF_INET6_ONLY 249#endif /* ! INET */ 250#endif /* INET6 */ 251 252#ifdef INET 253#ifdef INET6 254#define PF_INET_INET6 255#endif /* INET6 */ 256#endif /* INET */ 257 258#else 259 260#define PF_INET_INET6 261 262#endif /* _KERNEL */ 263 264/* Both IPv4 and IPv6 */ 265#ifdef PF_INET_INET6 266 267#define PF_AEQ(a, b, c) \ 268 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \ 269 ((a)->addr32[3] == (b)->addr32[3] && \ 270 (a)->addr32[2] == (b)->addr32[2] && \ 271 (a)->addr32[1] == (b)->addr32[1] && \ 272 (a)->addr32[0] == (b)->addr32[0])) \ 273 274#define PF_ANEQ(a, b, c) \ 275 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \ 276 ((a)->addr32[3] != (b)->addr32[3] || \ 277 (a)->addr32[2] != (b)->addr32[2] || \ 278 (a)->addr32[1] != (b)->addr32[1] || \ 279 (a)->addr32[0] != (b)->addr32[0])) \ 280 281#define PF_AZERO(a, c) \ 282 ((c == AF_INET && !(a)->addr32[0]) || \ 283 (!(a)->addr32[0] && !(a)->addr32[1] && \ 284 !(a)->addr32[2] && !(a)->addr32[3] )) \ 285 286#define PF_MATCHA(n, a, m, b, f) \ 287 pf_match_addr(n, a, m, b, f) 288 289#define PF_ACPY(a, b, f) \ 290 pf_addrcpy(a, b, f) 291 292#define PF_AINC(a, f) \ 293 pf_addr_inc(a, f) 294 295#define PF_POOLMASK(a, b, c, d, f) \ 296 pf_poolmask(a, b, c, d, f) 297 298#else 299 300/* Just IPv6 */ 301 302#ifdef PF_INET6_ONLY 303 304#define PF_AEQ(a, b, c) \ 305 ((a)->addr32[3] == (b)->addr32[3] && \ 306 (a)->addr32[2] == (b)->addr32[2] && \ 307 (a)->addr32[1] == (b)->addr32[1] && \ 308 (a)->addr32[0] == (b)->addr32[0]) \ 309 310#define PF_ANEQ(a, b, c) \ 311 ((a)->addr32[3] != (b)->addr32[3] || \ 312 (a)->addr32[2] != (b)->addr32[2] || \ 313 (a)->addr32[1] != (b)->addr32[1] || \ 314 (a)->addr32[0] != (b)->addr32[0]) \ 315 316#define PF_AZERO(a, c) \ 317 (!(a)->addr32[0] && \ 318 !(a)->addr32[1] && \ 319 !(a)->addr32[2] && \ 320 !(a)->addr32[3] ) \ 321 322#define PF_MATCHA(n, a, m, b, f) \ 323 pf_match_addr(n, a, m, b, f) 324 325#define PF_ACPY(a, b, f) \ 326 pf_addrcpy(a, b, f) 327 328#define PF_AINC(a, f) \ 329 pf_addr_inc(a, f) 330 331#define PF_POOLMASK(a, b, c, d, f) \ 332 pf_poolmask(a, b, c, d, f) 333 334#else 335 336/* Just IPv4 */ 337#ifdef PF_INET_ONLY 338 339#define PF_AEQ(a, b, c) \ 340 ((a)->addr32[0] == (b)->addr32[0]) 341 342#define PF_ANEQ(a, b, c) \ 343 ((a)->addr32[0] != (b)->addr32[0]) 344 345#define PF_AZERO(a, c) \ 346 (!(a)->addr32[0]) 347 348#define PF_MATCHA(n, a, m, b, f) \ 349 pf_match_addr(n, a, m, b, f) 350 351#define PF_ACPY(a, b, f) \ 352 (a)->v4.s_addr = (b)->v4.s_addr 353 354#define PF_AINC(a, f) \ 355 do { \ 356 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \ 357 } while (0) 358 359#define PF_POOLMASK(a, b, c, d, f) \ 360 do { \ 361 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \ 362 (((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \ 363 } while (0) 364 365#endif /* PF_INET_ONLY */ 366#endif /* PF_INET6_ONLY */ 367#endif /* PF_INET_INET6 */ 368 369/* 370 * XXX callers not FIB-aware in our version of pf yet. 371 * OpenBSD fixed it later it seems, 2010/05/07 13:33:16 claudio. 372 */ 373#define PF_MISMATCHAW(aw, x, af, neg, ifp, rtid) \ 374 ( \ 375 (((aw)->type == PF_ADDR_NOROUTE && \ 376 pf_routable((x), (af), NULL, (rtid))) || \ 377 (((aw)->type == PF_ADDR_URPFFAILED && (ifp) != NULL && \ 378 pf_routable((x), (af), (ifp), (rtid))) || \ 379 ((aw)->type == PF_ADDR_TABLE && \ 380 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \ 381 ((aw)->type == PF_ADDR_DYNIFTL && \ 382 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \ 383 ((aw)->type == PF_ADDR_RANGE && \ 384 !pf_match_addr_range(&(aw)->v.a.addr, \ 385 &(aw)->v.a.mask, (x), (af))) || \ 386 ((aw)->type == PF_ADDR_ADDRMASK && \ 387 !PF_AZERO(&(aw)->v.a.mask, (af)) && \ 388 !PF_MATCHA(0, &(aw)->v.a.addr, \ 389 &(aw)->v.a.mask, (x), (af))))) != \ 390 (neg) \ 391 ) 392 393 394struct pf_rule_uid { 395 uid_t uid[2]; 396 u_int8_t op; 397}; 398 399struct pf_rule_gid { 400 uid_t gid[2]; 401 u_int8_t op; 402}; 403 404struct pf_rule_addr { 405 struct pf_addr_wrap addr; 406 u_int16_t port[2]; 407 u_int8_t neg; 408 u_int8_t port_op; 409}; 410 411struct pf_pooladdr { 412 struct pf_addr_wrap addr; 413 TAILQ_ENTRY(pf_pooladdr) entries; 414 char ifname[IFNAMSIZ]; 415 struct pfi_kif *kif; 416}; 417 418TAILQ_HEAD(pf_palist, pf_pooladdr); 419 420struct pf_poolhashkey { 421 union { 422 u_int8_t key8[16]; 423 u_int16_t key16[8]; 424 u_int32_t key32[4]; 425 } pfk; /* 128-bit hash key */ 426#define key8 pfk.key8 427#define key16 pfk.key16 428#define key32 pfk.key32 429}; 430 431struct pf_pool { 432 struct pf_palist list; 433 struct pf_pooladdr *cur; 434 struct pf_poolhashkey key; 435 struct pf_addr counter; 436 int tblidx; 437 u_int16_t proxy_port[2]; 438 u_int8_t opts; 439}; 440 441 442/* A packed Operating System description for fingerprinting */ 443typedef u_int32_t pf_osfp_t; 444#define PF_OSFP_ANY ((pf_osfp_t)0) 445#define PF_OSFP_UNKNOWN ((pf_osfp_t)-1) 446#define PF_OSFP_NOMATCH ((pf_osfp_t)-2) 447 448struct pf_osfp_entry { 449 SLIST_ENTRY(pf_osfp_entry) fp_entry; 450 pf_osfp_t fp_os; 451 int fp_enflags; 452#define PF_OSFP_EXPANDED 0x001 /* expanded entry */ 453#define PF_OSFP_GENERIC 0x002 /* generic signature */ 454#define PF_OSFP_NODETAIL 0x004 /* no p0f details */ 455#define PF_OSFP_LEN 32 456 char fp_class_nm[PF_OSFP_LEN]; 457 char fp_version_nm[PF_OSFP_LEN]; 458 char fp_subtype_nm[PF_OSFP_LEN]; 459}; 460#define PF_OSFP_ENTRY_EQ(a, b) \ 461 ((a)->fp_os == (b)->fp_os && \ 462 memcmp((a)->fp_class_nm, (b)->fp_class_nm, PF_OSFP_LEN) == 0 && \ 463 memcmp((a)->fp_version_nm, (b)->fp_version_nm, PF_OSFP_LEN) == 0 && \ 464 memcmp((a)->fp_subtype_nm, (b)->fp_subtype_nm, PF_OSFP_LEN) == 0) 465 466/* handle pf_osfp_t packing */ 467#define _FP_RESERVED_BIT 1 /* For the special negative #defines */ 468#define _FP_UNUSED_BITS 1 469#define _FP_CLASS_BITS 10 /* OS Class (Windows, Linux) */ 470#define _FP_VERSION_BITS 10 /* OS version (95, 98, NT, 2.4.54, 3.2) */ 471#define _FP_SUBTYPE_BITS 10 /* patch level (NT SP4, SP3, ECN patch) */ 472#define PF_OSFP_UNPACK(osfp, class, version, subtype) do { \ 473 (class) = ((osfp) >> (_FP_VERSION_BITS+_FP_SUBTYPE_BITS)) & \ 474 ((1 << _FP_CLASS_BITS) - 1); \ 475 (version) = ((osfp) >> _FP_SUBTYPE_BITS) & \ 476 ((1 << _FP_VERSION_BITS) - 1);\ 477 (subtype) = (osfp) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 478} while(0) 479#define PF_OSFP_PACK(osfp, class, version, subtype) do { \ 480 (osfp) = ((class) & ((1 << _FP_CLASS_BITS) - 1)) << (_FP_VERSION_BITS \ 481 + _FP_SUBTYPE_BITS); \ 482 (osfp) |= ((version) & ((1 << _FP_VERSION_BITS) - 1)) << \ 483 _FP_SUBTYPE_BITS; \ 484 (osfp) |= (subtype) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 485} while(0) 486 487/* the fingerprint of an OSes TCP SYN packet */ 488typedef u_int64_t pf_tcpopts_t; 489struct pf_os_fingerprint { 490 SLIST_HEAD(pf_osfp_enlist, pf_osfp_entry) fp_oses; /* list of matches */ 491 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 492 u_int16_t fp_wsize; /* TCP window size */ 493 u_int16_t fp_psize; /* ip->ip_len */ 494 u_int16_t fp_mss; /* TCP MSS */ 495 u_int16_t fp_flags; 496#define PF_OSFP_WSIZE_MOD 0x0001 /* Window modulus */ 497#define PF_OSFP_WSIZE_DC 0x0002 /* Window don't care */ 498#define PF_OSFP_WSIZE_MSS 0x0004 /* Window multiple of MSS */ 499#define PF_OSFP_WSIZE_MTU 0x0008 /* Window multiple of MTU */ 500#define PF_OSFP_PSIZE_MOD 0x0010 /* packet size modulus */ 501#define PF_OSFP_PSIZE_DC 0x0020 /* packet size don't care */ 502#define PF_OSFP_WSCALE 0x0040 /* TCP window scaling */ 503#define PF_OSFP_WSCALE_MOD 0x0080 /* TCP window scale modulus */ 504#define PF_OSFP_WSCALE_DC 0x0100 /* TCP window scale dont-care */ 505#define PF_OSFP_MSS 0x0200 /* TCP MSS */ 506#define PF_OSFP_MSS_MOD 0x0400 /* TCP MSS modulus */ 507#define PF_OSFP_MSS_DC 0x0800 /* TCP MSS dont-care */ 508#define PF_OSFP_DF 0x1000 /* IPv4 don't fragment bit */ 509#define PF_OSFP_TS0 0x2000 /* Zero timestamp */ 510#define PF_OSFP_INET6 0x4000 /* IPv6 */ 511 u_int8_t fp_optcnt; /* TCP option count */ 512 u_int8_t fp_wscale; /* TCP window scaling */ 513 u_int8_t fp_ttl; /* IPv4 TTL */ 514#define PF_OSFP_MAXTTL_OFFSET 40 515/* TCP options packing */ 516#define PF_OSFP_TCPOPT_NOP 0x0 /* TCP NOP option */ 517#define PF_OSFP_TCPOPT_WSCALE 0x1 /* TCP window scaling option */ 518#define PF_OSFP_TCPOPT_MSS 0x2 /* TCP max segment size opt */ 519#define PF_OSFP_TCPOPT_SACK 0x3 /* TCP SACK OK option */ 520#define PF_OSFP_TCPOPT_TS 0x4 /* TCP timestamp option */ 521#define PF_OSFP_TCPOPT_BITS 3 /* bits used by each option */ 522#define PF_OSFP_MAX_OPTS \ 523 (sizeof(((struct pf_os_fingerprint *)0)->fp_tcpopts) * 8) \ 524 / PF_OSFP_TCPOPT_BITS 525 526 SLIST_ENTRY(pf_os_fingerprint) fp_next; 527}; 528 529struct pf_osfp_ioctl { 530 struct pf_osfp_entry fp_os; 531 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 532 u_int16_t fp_wsize; /* TCP window size */ 533 u_int16_t fp_psize; /* ip->ip_len */ 534 u_int16_t fp_mss; /* TCP MSS */ 535 u_int16_t fp_flags; 536 u_int8_t fp_optcnt; /* TCP option count */ 537 u_int8_t fp_wscale; /* TCP window scaling */ 538 u_int8_t fp_ttl; /* IPv4 TTL */ 539 540 int fp_getnum; /* DIOCOSFPGET number */ 541}; 542 543 544union pf_rule_ptr { 545 struct pf_rule *ptr; 546 u_int32_t nr; 547}; 548 549#define PF_ANCHOR_NAME_SIZE 64 550 551struct pf_rule { 552 struct pf_rule_addr src; 553 struct pf_rule_addr dst; 554#define PF_SKIP_IFP 0 555#define PF_SKIP_DIR 1 556#define PF_SKIP_AF 2 557#define PF_SKIP_PROTO 3 558#define PF_SKIP_SRC_ADDR 4 559#define PF_SKIP_SRC_PORT 5 560#define PF_SKIP_DST_ADDR 6 561#define PF_SKIP_DST_PORT 7 562#define PF_SKIP_COUNT 8 563 union pf_rule_ptr skip[PF_SKIP_COUNT]; 564#define PF_RULE_LABEL_SIZE 64 565 char label[PF_RULE_LABEL_SIZE]; 566#define PF_QNAME_SIZE 64 567 char ifname[IFNAMSIZ]; 568 char qname[PF_QNAME_SIZE]; 569 char pqname[PF_QNAME_SIZE]; 570#define PF_TAG_NAME_SIZE 64 571 char tagname[PF_TAG_NAME_SIZE]; 572 char match_tagname[PF_TAG_NAME_SIZE]; 573 574 char overload_tblname[PF_TABLE_NAME_SIZE]; 575 576 TAILQ_ENTRY(pf_rule) entries; 577 struct pf_pool rpool; 578 579 u_int64_t evaluations; 580 u_int64_t packets[2]; 581 u_int64_t bytes[2]; 582 583 struct pfi_kif *kif; 584 struct pf_anchor *anchor; 585 struct pfr_ktable *overload_tbl; 586 587 pf_osfp_t os_fingerprint; 588 589 int rtableid; 590 u_int32_t timeout[PFTM_MAX]; 591 u_int32_t states_cur; 592 u_int32_t states_tot; 593 u_int32_t max_states; 594 u_int32_t src_nodes; 595 u_int32_t max_src_nodes; 596 u_int32_t max_src_states; 597 u_int32_t spare1; /* netgraph */ 598 u_int32_t max_src_conn; 599 struct { 600 u_int32_t limit; 601 u_int32_t seconds; 602 } max_src_conn_rate; 603 u_int32_t qid; 604 u_int32_t pqid; 605 u_int32_t rt_listid; 606 u_int32_t nr; 607 u_int32_t prob; 608 uid_t cuid; 609 pid_t cpid; 610 611 u_int16_t return_icmp; 612 u_int16_t return_icmp6; 613 u_int16_t max_mss; 614 u_int16_t tag; 615 u_int16_t match_tag; 616 u_int16_t spare2; /* netgraph */ 617 618 struct pf_rule_uid uid; 619 struct pf_rule_gid gid; 620 621 u_int32_t rule_flag; 622 u_int8_t action; 623 u_int8_t direction; 624 u_int8_t log; 625 u_int8_t logif; 626 u_int8_t quick; 627 u_int8_t ifnot; 628 u_int8_t match_tag_not; 629 u_int8_t natpass; 630 631#define PF_STATE_NORMAL 0x1 632#define PF_STATE_MODULATE 0x2 633#define PF_STATE_SYNPROXY 0x3 634 u_int8_t keep_state; 635 sa_family_t af; 636 u_int8_t proto; 637 u_int8_t type; 638 u_int8_t code; 639 u_int8_t flags; 640 u_int8_t flagset; 641 u_int8_t min_ttl; 642 u_int8_t allow_opts; 643 u_int8_t rt; 644 u_int8_t return_ttl; 645 u_int8_t tos; 646 u_int8_t set_tos; 647 u_int8_t anchor_relative; 648 u_int8_t anchor_wildcard; 649 650#define PF_FLUSH 0x01 651#define PF_FLUSH_GLOBAL 0x02 652 u_int8_t flush; 653 654 struct { 655 struct pf_addr addr; 656 u_int16_t port; 657 } divert; 658}; 659 660/* rule flags */ 661#define PFRULE_DROP 0x0000 662#define PFRULE_RETURNRST 0x0001 663#define PFRULE_FRAGMENT 0x0002 664#define PFRULE_RETURNICMP 0x0004 665#define PFRULE_RETURN 0x0008 666#define PFRULE_NOSYNC 0x0010 667#define PFRULE_SRCTRACK 0x0020 /* track source states */ 668#define PFRULE_RULESRCTRACK 0x0040 /* per rule */ 669#define PFRULE_REFS 0x0080 /* rule has references */ 670 671/* scrub flags */ 672#define PFRULE_NODF 0x0100 673#define PFRULE_FRAGCROP 0x0200 /* non-buffering frag cache */ 674#define PFRULE_FRAGDROP 0x0400 /* drop funny fragments */ 675#define PFRULE_RANDOMID 0x0800 676#define PFRULE_REASSEMBLE_TCP 0x1000 677#define PFRULE_SET_TOS 0x2000 678 679/* rule flags again */ 680#define PFRULE_IFBOUND 0x00010000 /* if-bound */ 681#define PFRULE_STATESLOPPY 0x00020000 /* sloppy state tracking */ 682 683#define PFSTATE_HIWAT 10000 /* default state table size */ 684#define PFSTATE_ADAPT_START 6000 /* default adaptive timeout start */ 685#define PFSTATE_ADAPT_END 12000 /* default adaptive timeout end */ 686 687 688struct pf_threshold { 689 u_int32_t limit; 690#define PF_THRESHOLD_MULT 1000 691#define PF_THRESHOLD_MAX 0xffffffff / PF_THRESHOLD_MULT 692 u_int32_t seconds; 693 u_int32_t count; 694 u_int32_t last; 695}; 696 697struct pf_src_node { 698 LIST_ENTRY(pf_src_node) entry; 699 struct pf_addr addr; 700 struct pf_addr raddr; 701 union pf_rule_ptr rule; 702 struct pfi_kif *kif; 703 u_int64_t bytes[2]; 704 u_int64_t packets[2]; 705 u_int32_t states; 706 u_int32_t conn; 707 struct pf_threshold conn_rate; 708 u_int32_t creation; 709 u_int32_t expire; 710 sa_family_t af; 711 u_int8_t ruletype; 712}; 713 714#define PFSNODE_HIWAT 10000 /* default source node table size */ 715 716struct pf_state_scrub { 717 struct timeval pfss_last; /* time received last packet */ 718 u_int32_t pfss_tsecr; /* last echoed timestamp */ 719 u_int32_t pfss_tsval; /* largest timestamp */ 720 u_int32_t pfss_tsval0; /* original timestamp */ 721 u_int16_t pfss_flags; 722#define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */ 723#define PFSS_PAWS 0x0010 /* stricter PAWS checks */ 724#define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */ 725#define PFSS_DATA_TS 0x0040 /* timestamp on data packets */ 726#define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */ 727 u_int8_t pfss_ttl; /* stashed TTL */ 728 u_int8_t pad; 729 u_int32_t pfss_ts_mod; /* timestamp modulation */ 730}; 731 732struct pf_state_host { 733 struct pf_addr addr; 734 u_int16_t port; 735 u_int16_t pad; 736}; 737 738struct pf_state_peer { 739 struct pf_state_scrub *scrub; /* state is scrubbed */ 740 u_int32_t seqlo; /* Max sequence number sent */ 741 u_int32_t seqhi; /* Max the other end ACKd + win */ 742 u_int32_t seqdiff; /* Sequence number modulator */ 743 u_int16_t max_win; /* largest window (pre scaling) */ 744 u_int16_t mss; /* Maximum segment size option */ 745 u_int8_t state; /* active state level */ 746 u_int8_t wscale; /* window scaling factor */ 747 u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */ 748 u_int8_t pad[1]; 749}; 750 751/* Keep synced with struct pf_state_key. */ 752struct pf_state_key_cmp { 753 struct pf_addr addr[2]; 754 u_int16_t port[2]; 755 sa_family_t af; 756 u_int8_t proto; 757 u_int8_t pad[2]; 758}; 759 760struct pf_state_key { 761 struct pf_addr addr[2]; 762 u_int16_t port[2]; 763 sa_family_t af; 764 u_int8_t proto; 765 u_int8_t pad[2]; 766 767 LIST_ENTRY(pf_state_key) entry; 768 TAILQ_HEAD(, pf_state) states[2]; 769}; 770 771/* Keep synced with struct pf_state. */ 772struct pf_state_cmp { 773 u_int64_t id; 774 u_int32_t creatorid; 775 u_int8_t direction; 776 u_int8_t pad[3]; 777}; 778 779struct pf_state { 780 u_int64_t id; 781 u_int32_t creatorid; 782 u_int8_t direction; 783 u_int8_t pad[3]; 784 785 u_int refs; 786 TAILQ_ENTRY(pf_state) sync_list; 787 TAILQ_ENTRY(pf_state) key_list[2]; 788 LIST_ENTRY(pf_state) entry; 789 struct pf_state_peer src; 790 struct pf_state_peer dst; 791 union pf_rule_ptr rule; 792 union pf_rule_ptr anchor; 793 union pf_rule_ptr nat_rule; 794 struct pf_addr rt_addr; 795 struct pf_state_key *key[2]; /* addresses stack and wire */ 796 struct pfi_kif *kif; 797 struct pfi_kif *rt_kif; 798 struct pf_src_node *src_node; 799 struct pf_src_node *nat_src_node; 800 u_int64_t packets[2]; 801 u_int64_t bytes[2]; 802 u_int32_t creation; 803 u_int32_t expire; 804 u_int32_t pfsync_time; 805 u_int16_t tag; 806 u_int8_t log; 807 u_int8_t state_flags; 808#define PFSTATE_ALLOWOPTS 0x01 809#define PFSTATE_SLOPPY 0x02 810/* was PFSTATE_PFLOW 0x04 */ 811#define PFSTATE_NOSYNC 0x08 812#define PFSTATE_ACK 0x10 813 u_int8_t timeout; 814 u_int8_t sync_state; /* PFSYNC_S_x */ 815 816 /* XXX */ 817 u_int8_t sync_updates; 818 u_int8_t _tail[3]; 819}; 820 821/* 822 * Unified state structures for pulling states out of the kernel 823 * used by pfsync(4) and the pf(4) ioctl. 824 */ 825struct pfsync_state_scrub { 826 u_int16_t pfss_flags; 827 u_int8_t pfss_ttl; /* stashed TTL */ 828#define PFSYNC_SCRUB_FLAG_VALID 0x01 829 u_int8_t scrub_flag; 830 u_int32_t pfss_ts_mod; /* timestamp modulation */ 831} __packed; 832 833struct pfsync_state_peer { 834 struct pfsync_state_scrub scrub; /* state is scrubbed */ 835 u_int32_t seqlo; /* Max sequence number sent */ 836 u_int32_t seqhi; /* Max the other end ACKd + win */ 837 u_int32_t seqdiff; /* Sequence number modulator */ 838 u_int16_t max_win; /* largest window (pre scaling) */ 839 u_int16_t mss; /* Maximum segment size option */ 840 u_int8_t state; /* active state level */ 841 u_int8_t wscale; /* window scaling factor */ 842 u_int8_t pad[6]; 843} __packed; 844 845struct pfsync_state_key { 846 struct pf_addr addr[2]; 847 u_int16_t port[2]; 848}; 849 850struct pfsync_state { 851 u_int64_t id; 852 char ifname[IFNAMSIZ]; 853 struct pfsync_state_key key[2]; 854 struct pfsync_state_peer src; 855 struct pfsync_state_peer dst; 856 struct pf_addr rt_addr; 857 u_int32_t rule; 858 u_int32_t anchor; 859 u_int32_t nat_rule; 860 u_int32_t creation; 861 u_int32_t expire; 862 u_int32_t packets[2][2]; 863 u_int32_t bytes[2][2]; 864 u_int32_t creatorid; 865 sa_family_t af; 866 u_int8_t proto; 867 u_int8_t direction; 868 u_int8_t __spare[2]; 869 u_int8_t log; 870 u_int8_t state_flags; 871 u_int8_t timeout; 872 u_int8_t sync_flags; 873 u_int8_t updates; 874} __packed; 875 876#ifdef _KERNEL 877/* pfsync */ 878typedef int pfsync_state_import_t(struct pfsync_state *, u_int8_t); 879typedef void pfsync_insert_state_t(struct pf_state *); 880typedef void pfsync_update_state_t(struct pf_state *); 881typedef void pfsync_delete_state_t(struct pf_state *); 882typedef void pfsync_clear_states_t(u_int32_t, const char *); 883typedef int pfsync_defer_t(struct pf_state *, struct mbuf *); 884 885extern pfsync_state_import_t *pfsync_state_import_ptr; 886extern pfsync_insert_state_t *pfsync_insert_state_ptr; 887extern pfsync_update_state_t *pfsync_update_state_ptr; 888extern pfsync_delete_state_t *pfsync_delete_state_ptr; 889extern pfsync_clear_states_t *pfsync_clear_states_ptr; 890extern pfsync_defer_t *pfsync_defer_ptr; 891 892void pfsync_state_export(struct pfsync_state *, 893 struct pf_state *); 894 895/* pflog */ 896struct pf_ruleset; 897struct pf_pdesc; 898typedef int pflog_packet_t(struct pfi_kif *, struct mbuf *, sa_family_t, 899 u_int8_t, u_int8_t, struct pf_rule *, struct pf_rule *, 900 struct pf_ruleset *, struct pf_pdesc *, int); 901extern pflog_packet_t *pflog_packet_ptr; 902 903#define V_pf_end_threads VNET(pf_end_threads) 904#endif /* _KERNEL */ 905 906#define PFSYNC_FLAG_SRCNODE 0x04 907#define PFSYNC_FLAG_NATSRCNODE 0x08 908 909/* for copies to/from network byte order */ 910/* ioctl interface also uses network byte order */ 911#define pf_state_peer_hton(s,d) do { \ 912 (d)->seqlo = htonl((s)->seqlo); \ 913 (d)->seqhi = htonl((s)->seqhi); \ 914 (d)->seqdiff = htonl((s)->seqdiff); \ 915 (d)->max_win = htons((s)->max_win); \ 916 (d)->mss = htons((s)->mss); \ 917 (d)->state = (s)->state; \ 918 (d)->wscale = (s)->wscale; \ 919 if ((s)->scrub) { \ 920 (d)->scrub.pfss_flags = \ 921 htons((s)->scrub->pfss_flags & PFSS_TIMESTAMP); \ 922 (d)->scrub.pfss_ttl = (s)->scrub->pfss_ttl; \ 923 (d)->scrub.pfss_ts_mod = htonl((s)->scrub->pfss_ts_mod);\ 924 (d)->scrub.scrub_flag = PFSYNC_SCRUB_FLAG_VALID; \ 925 } \ 926} while (0) 927 928#define pf_state_peer_ntoh(s,d) do { \ 929 (d)->seqlo = ntohl((s)->seqlo); \ 930 (d)->seqhi = ntohl((s)->seqhi); \ 931 (d)->seqdiff = ntohl((s)->seqdiff); \ 932 (d)->max_win = ntohs((s)->max_win); \ 933 (d)->mss = ntohs((s)->mss); \ 934 (d)->state = (s)->state; \ 935 (d)->wscale = (s)->wscale; \ 936 if ((s)->scrub.scrub_flag == PFSYNC_SCRUB_FLAG_VALID && \ 937 (d)->scrub != NULL) { \ 938 (d)->scrub->pfss_flags = \ 939 ntohs((s)->scrub.pfss_flags) & PFSS_TIMESTAMP; \ 940 (d)->scrub->pfss_ttl = (s)->scrub.pfss_ttl; \ 941 (d)->scrub->pfss_ts_mod = ntohl((s)->scrub.pfss_ts_mod);\ 942 } \ 943} while (0) 944 945#define pf_state_counter_hton(s,d) do { \ 946 d[0] = htonl((s>>32)&0xffffffff); \ 947 d[1] = htonl(s&0xffffffff); \ 948} while (0) 949 950#define pf_state_counter_from_pfsync(s) \ 951 (((u_int64_t)(s[0])<<32) | (u_int64_t)(s[1])) 952 953#define pf_state_counter_ntoh(s,d) do { \ 954 d = ntohl(s[0]); \ 955 d = d<<32; \ 956 d += ntohl(s[1]); \ 957} while (0) 958 959TAILQ_HEAD(pf_rulequeue, pf_rule); 960 961struct pf_anchor; 962 963struct pf_ruleset { 964 struct { 965 struct pf_rulequeue queues[2]; 966 struct { 967 struct pf_rulequeue *ptr; 968 struct pf_rule **ptr_array; 969 u_int32_t rcount; 970 u_int32_t ticket; 971 int open; 972 } active, inactive; 973 } rules[PF_RULESET_MAX]; 974 struct pf_anchor *anchor; 975 u_int32_t tticket; 976 int tables; 977 int topen; 978}; 979 980RB_HEAD(pf_anchor_global, pf_anchor); 981RB_HEAD(pf_anchor_node, pf_anchor); 982struct pf_anchor { 983 RB_ENTRY(pf_anchor) entry_global; 984 RB_ENTRY(pf_anchor) entry_node; 985 struct pf_anchor *parent; 986 struct pf_anchor_node children; 987 char name[PF_ANCHOR_NAME_SIZE]; 988 char path[MAXPATHLEN]; 989 struct pf_ruleset ruleset; 990 int refcnt; /* anchor rules */ 991 int match; /* XXX: used for pfctl black magic */ 992}; 993RB_PROTOTYPE(pf_anchor_global, pf_anchor, entry_global, pf_anchor_compare); 994RB_PROTOTYPE(pf_anchor_node, pf_anchor, entry_node, pf_anchor_compare); 995 996#define PF_RESERVED_ANCHOR "_pf" 997 998#define PFR_TFLAG_PERSIST 0x00000001 999#define PFR_TFLAG_CONST 0x00000002 1000#define PFR_TFLAG_ACTIVE 0x00000004 1001#define PFR_TFLAG_INACTIVE 0x00000008 1002#define PFR_TFLAG_REFERENCED 0x00000010 1003#define PFR_TFLAG_REFDANCHOR 0x00000020 1004#define PFR_TFLAG_COUNTERS 0x00000040 1005/* Adjust masks below when adding flags. */ 1006#define PFR_TFLAG_USRMASK (PFR_TFLAG_PERSIST | \ 1007 PFR_TFLAG_CONST | \ 1008 PFR_TFLAG_COUNTERS) 1009#define PFR_TFLAG_SETMASK (PFR_TFLAG_ACTIVE | \ 1010 PFR_TFLAG_INACTIVE | \ 1011 PFR_TFLAG_REFERENCED | \ 1012 PFR_TFLAG_REFDANCHOR) 1013#define PFR_TFLAG_ALLMASK (PFR_TFLAG_PERSIST | \ 1014 PFR_TFLAG_CONST | \ 1015 PFR_TFLAG_ACTIVE | \ 1016 PFR_TFLAG_INACTIVE | \ 1017 PFR_TFLAG_REFERENCED | \ 1018 PFR_TFLAG_REFDANCHOR | \ 1019 PFR_TFLAG_COUNTERS) 1020 1021struct pf_anchor_stackframe; 1022 1023struct pfr_table { 1024 char pfrt_anchor[MAXPATHLEN]; 1025 char pfrt_name[PF_TABLE_NAME_SIZE]; 1026 u_int32_t pfrt_flags; 1027 u_int8_t pfrt_fback; 1028}; 1029 1030enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED, 1031 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE, 1032 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_NOCOUNT, PFR_FB_MAX }; 1033 1034struct pfr_addr { 1035 union { 1036 struct in_addr _pfra_ip4addr; 1037 struct in6_addr _pfra_ip6addr; 1038 } pfra_u; 1039 u_int8_t pfra_af; 1040 u_int8_t pfra_net; 1041 u_int8_t pfra_not; 1042 u_int8_t pfra_fback; 1043}; 1044#define pfra_ip4addr pfra_u._pfra_ip4addr 1045#define pfra_ip6addr pfra_u._pfra_ip6addr 1046 1047enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX }; 1048enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX }; 1049#define PFR_OP_XPASS PFR_OP_ADDR_MAX 1050 1051struct pfr_astats { 1052 struct pfr_addr pfras_a; 1053 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1054 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1055 long pfras_tzero; 1056}; 1057 1058enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX }; 1059 1060struct pfr_tstats { 1061 struct pfr_table pfrts_t; 1062 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1063 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 1064 u_int64_t pfrts_match; 1065 u_int64_t pfrts_nomatch; 1066 long pfrts_tzero; 1067 int pfrts_cnt; 1068 int pfrts_refcnt[PFR_REFCNT_MAX]; 1069}; 1070#define pfrts_name pfrts_t.pfrt_name 1071#define pfrts_flags pfrts_t.pfrt_flags 1072 1073#ifndef _SOCKADDR_UNION_DEFINED 1074#define _SOCKADDR_UNION_DEFINED 1075union sockaddr_union { 1076 struct sockaddr sa; 1077 struct sockaddr_in sin; 1078 struct sockaddr_in6 sin6; 1079}; 1080#endif /* _SOCKADDR_UNION_DEFINED */ 1081 1082struct pfr_kcounters { 1083 u_int64_t pfrkc_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1084 u_int64_t pfrkc_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1085}; 1086 1087SLIST_HEAD(pfr_kentryworkq, pfr_kentry); 1088struct pfr_kentry { 1089 struct radix_node pfrke_node[2]; 1090 union sockaddr_union pfrke_sa; 1091 SLIST_ENTRY(pfr_kentry) pfrke_workq; 1092 struct pfr_kcounters *pfrke_counters; 1093 long pfrke_tzero; 1094 u_int8_t pfrke_af; 1095 u_int8_t pfrke_net; 1096 u_int8_t pfrke_not; 1097 u_int8_t pfrke_mark; 1098}; 1099 1100SLIST_HEAD(pfr_ktableworkq, pfr_ktable); 1101RB_HEAD(pfr_ktablehead, pfr_ktable); 1102struct pfr_ktable { 1103 struct pfr_tstats pfrkt_ts; 1104 RB_ENTRY(pfr_ktable) pfrkt_tree; 1105 SLIST_ENTRY(pfr_ktable) pfrkt_workq; 1106 struct radix_node_head *pfrkt_ip4; 1107 struct radix_node_head *pfrkt_ip6; 1108 struct pfr_ktable *pfrkt_shadow; 1109 struct pfr_ktable *pfrkt_root; 1110 struct pf_ruleset *pfrkt_rs; 1111 long pfrkt_larg; 1112 int pfrkt_nflags; 1113}; 1114#define pfrkt_t pfrkt_ts.pfrts_t 1115#define pfrkt_name pfrkt_t.pfrt_name 1116#define pfrkt_anchor pfrkt_t.pfrt_anchor 1117#define pfrkt_ruleset pfrkt_t.pfrt_ruleset 1118#define pfrkt_flags pfrkt_t.pfrt_flags 1119#define pfrkt_cnt pfrkt_ts.pfrts_cnt 1120#define pfrkt_refcnt pfrkt_ts.pfrts_refcnt 1121#define pfrkt_packets pfrkt_ts.pfrts_packets 1122#define pfrkt_bytes pfrkt_ts.pfrts_bytes 1123#define pfrkt_match pfrkt_ts.pfrts_match 1124#define pfrkt_nomatch pfrkt_ts.pfrts_nomatch 1125#define pfrkt_tzero pfrkt_ts.pfrts_tzero 1126 1127/* keep synced with pfi_kif, used in RB_FIND */ 1128struct pfi_kif_cmp { 1129 char pfik_name[IFNAMSIZ]; 1130}; 1131 1132struct pfi_kif { 1133 char pfik_name[IFNAMSIZ]; 1134 union { 1135 RB_ENTRY(pfi_kif) _pfik_tree; 1136 LIST_ENTRY(pfi_kif) _pfik_list; 1137 } _pfik_glue; 1138#define pfik_tree _pfik_glue._pfik_tree 1139#define pfik_list _pfik_glue._pfik_list 1140 u_int64_t pfik_packets[2][2][2]; 1141 u_int64_t pfik_bytes[2][2][2]; 1142 u_int32_t pfik_tzero; 1143 u_int pfik_flags; 1144 struct ifnet *pfik_ifp; 1145 struct ifg_group *pfik_group; 1146 u_int pfik_rulerefs; 1147 TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs; 1148}; 1149 1150#define PFI_IFLAG_REFS 0x0001 /* has state references */ 1151#define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */ 1152 1153struct pf_pdesc { 1154 struct { 1155 int done; 1156 uid_t uid; 1157 gid_t gid; 1158 } lookup; 1159 u_int64_t tot_len; /* Make Mickey money */ 1160 union { 1161 struct tcphdr *tcp; 1162 struct udphdr *udp; 1163 struct icmp *icmp; 1164#ifdef INET6 1165 struct icmp6_hdr *icmp6; 1166#endif /* INET6 */ 1167 void *any; 1168 } hdr; 1169 1170 struct pf_rule *nat_rule; /* nat/rdr rule applied to packet */ 1171 struct pf_addr *src; /* src address */ 1172 struct pf_addr *dst; /* dst address */ 1173 u_int16_t *sport; 1174 u_int16_t *dport; 1175 struct pf_mtag *pf_mtag; 1176 1177 u_int32_t p_len; /* total length of payload */ 1178 1179 u_int16_t *ip_sum; 1180 u_int16_t *proto_sum; 1181 u_int16_t flags; /* Let SCRUB trigger behavior in 1182 * state code. Easier than tags */ 1183#define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */ 1184#define PFDESC_IP_REAS 0x0002 /* IP frags would've been reassembled */ 1185 sa_family_t af; 1186 u_int8_t proto; 1187 u_int8_t tos; 1188 u_int8_t dir; /* direction */ 1189 u_int8_t sidx; /* key index for source */ 1190 u_int8_t didx; /* key index for destination */ 1191}; 1192 1193/* flags for RDR options */ 1194#define PF_DPORT_RANGE 0x01 /* Dest port uses range */ 1195#define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */ 1196 1197/* Reasons code for passing/dropping a packet */ 1198#define PFRES_MATCH 0 /* Explicit match of a rule */ 1199#define PFRES_BADOFF 1 /* Bad offset for pull_hdr */ 1200#define PFRES_FRAG 2 /* Dropping following fragment */ 1201#define PFRES_SHORT 3 /* Dropping short packet */ 1202#define PFRES_NORM 4 /* Dropping by normalizer */ 1203#define PFRES_MEMORY 5 /* Dropped due to lacking mem */ 1204#define PFRES_TS 6 /* Bad TCP Timestamp (RFC1323) */ 1205#define PFRES_CONGEST 7 /* Congestion (of ipintrq) */ 1206#define PFRES_IPOPTIONS 8 /* IP option */ 1207#define PFRES_PROTCKSUM 9 /* Protocol checksum invalid */ 1208#define PFRES_BADSTATE 10 /* State mismatch */ 1209#define PFRES_STATEINS 11 /* State insertion failure */ 1210#define PFRES_MAXSTATES 12 /* State limit */ 1211#define PFRES_SRCLIMIT 13 /* Source node/conn limit */ 1212#define PFRES_SYNPROXY 14 /* SYN proxy */ 1213#define PFRES_MAX 15 /* total+1 */ 1214 1215#define PFRES_NAMES { \ 1216 "match", \ 1217 "bad-offset", \ 1218 "fragment", \ 1219 "short", \ 1220 "normalize", \ 1221 "memory", \ 1222 "bad-timestamp", \ 1223 "congestion", \ 1224 "ip-option", \ 1225 "proto-cksum", \ 1226 "state-mismatch", \ 1227 "state-insert", \ 1228 "state-limit", \ 1229 "src-limit", \ 1230 "synproxy", \ 1231 NULL \ 1232} 1233 1234/* Counters for other things we want to keep track of */ 1235#define LCNT_STATES 0 /* states */ 1236#define LCNT_SRCSTATES 1 /* max-src-states */ 1237#define LCNT_SRCNODES 2 /* max-src-nodes */ 1238#define LCNT_SRCCONN 3 /* max-src-conn */ 1239#define LCNT_SRCCONNRATE 4 /* max-src-conn-rate */ 1240#define LCNT_OVERLOAD_TABLE 5 /* entry added to overload table */ 1241#define LCNT_OVERLOAD_FLUSH 6 /* state entries flushed */ 1242#define LCNT_MAX 7 /* total+1 */ 1243 1244#define LCNT_NAMES { \ 1245 "max states per rule", \ 1246 "max-src-states", \ 1247 "max-src-nodes", \ 1248 "max-src-conn", \ 1249 "max-src-conn-rate", \ 1250 "overload table insertion", \ 1251 "overload flush states", \ 1252 NULL \ 1253} 1254 1255/* UDP state enumeration */ 1256#define PFUDPS_NO_TRAFFIC 0 1257#define PFUDPS_SINGLE 1 1258#define PFUDPS_MULTIPLE 2 1259 1260#define PFUDPS_NSTATES 3 /* number of state levels */ 1261 1262#define PFUDPS_NAMES { \ 1263 "NO_TRAFFIC", \ 1264 "SINGLE", \ 1265 "MULTIPLE", \ 1266 NULL \ 1267} 1268 1269/* Other protocol state enumeration */ 1270#define PFOTHERS_NO_TRAFFIC 0 1271#define PFOTHERS_SINGLE 1 1272#define PFOTHERS_MULTIPLE 2 1273 1274#define PFOTHERS_NSTATES 3 /* number of state levels */ 1275 1276#define PFOTHERS_NAMES { \ 1277 "NO_TRAFFIC", \ 1278 "SINGLE", \ 1279 "MULTIPLE", \ 1280 NULL \ 1281} 1282 1283#define FCNT_STATE_SEARCH 0 1284#define FCNT_STATE_INSERT 1 1285#define FCNT_STATE_REMOVALS 2 1286#define FCNT_MAX 3 1287 1288#define SCNT_SRC_NODE_SEARCH 0 1289#define SCNT_SRC_NODE_INSERT 1 1290#define SCNT_SRC_NODE_REMOVALS 2 1291#define SCNT_MAX 3 1292 1293#define ACTION_SET(a, x) \ 1294 do { \ 1295 if ((a) != NULL) \ 1296 *(a) = (x); \ 1297 } while (0) 1298 1299#define REASON_SET(a, x) \ 1300 do { \ 1301 if ((a) != NULL) \ 1302 *(a) = (x); \ 1303 if (x < PFRES_MAX) \ 1304 V_pf_status.counters[x]++; \ 1305 } while (0) 1306 1307struct pf_status { 1308 u_int64_t counters[PFRES_MAX]; 1309 u_int64_t lcounters[LCNT_MAX]; /* limit counters */ 1310 u_int64_t fcounters[FCNT_MAX]; 1311 u_int64_t scounters[SCNT_MAX]; 1312 u_int64_t pcounters[2][2][3]; 1313 u_int64_t bcounters[2][2]; 1314 u_int32_t running; 1315 u_int32_t states; 1316 u_int32_t src_nodes; 1317 u_int32_t since; 1318 u_int32_t debug; 1319 u_int32_t hostid; 1320 char ifname[IFNAMSIZ]; 1321 u_int8_t pf_chksum[PF_MD5_DIGEST_LENGTH]; 1322}; 1323 1324struct cbq_opts { 1325 u_int minburst; 1326 u_int maxburst; 1327 u_int pktsize; 1328 u_int maxpktsize; 1329 u_int ns_per_byte; 1330 u_int maxidle; 1331 int minidle; 1332 u_int offtime; 1333 int flags; 1334}; 1335 1336struct priq_opts { 1337 int flags; 1338}; 1339 1340struct hfsc_opts { 1341 /* real-time service curve */ 1342 u_int rtsc_m1; /* slope of the 1st segment in bps */ 1343 u_int rtsc_d; /* the x-projection of m1 in msec */ 1344 u_int rtsc_m2; /* slope of the 2nd segment in bps */ 1345 /* link-sharing service curve */ 1346 u_int lssc_m1; 1347 u_int lssc_d; 1348 u_int lssc_m2; 1349 /* upper-limit service curve */ 1350 u_int ulsc_m1; 1351 u_int ulsc_d; 1352 u_int ulsc_m2; 1353 int flags; 1354}; 1355 1356struct pf_altq { 1357 char ifname[IFNAMSIZ]; 1358 1359 void *altq_disc; /* discipline-specific state */ 1360 TAILQ_ENTRY(pf_altq) entries; 1361 1362 /* scheduler spec */ 1363 u_int8_t scheduler; /* scheduler type */ 1364 u_int16_t tbrsize; /* tokenbucket regulator size */ 1365 u_int32_t ifbandwidth; /* interface bandwidth */ 1366 1367 /* queue spec */ 1368 char qname[PF_QNAME_SIZE]; /* queue name */ 1369 char parent[PF_QNAME_SIZE]; /* parent name */ 1370 u_int32_t parent_qid; /* parent queue id */ 1371 u_int32_t bandwidth; /* queue bandwidth */ 1372 u_int8_t priority; /* priority */ 1373 u_int8_t local_flags; /* dynamic interface */ 1374#define PFALTQ_FLAG_IF_REMOVED 0x01 1375 1376 u_int16_t qlimit; /* queue size limit */ 1377 u_int16_t flags; /* misc flags */ 1378 union { 1379 struct cbq_opts cbq_opts; 1380 struct priq_opts priq_opts; 1381 struct hfsc_opts hfsc_opts; 1382 } pq_u; 1383 1384 u_int32_t qid; /* return value */ 1385}; 1386 1387struct pf_divert { 1388 union { 1389 struct in_addr ipv4; 1390 struct in6_addr ipv6; 1391 } addr; 1392 u_int16_t port; 1393}; 1394 1395#define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */ 1396#define PFR_KENTRY_HIWAT 200000 /* Number of table entries */ 1397 1398/* 1399 * ioctl parameter structures 1400 */ 1401 1402struct pfioc_pooladdr { 1403 u_int32_t action; 1404 u_int32_t ticket; 1405 u_int32_t nr; 1406 u_int32_t r_num; 1407 u_int8_t r_action; 1408 u_int8_t r_last; 1409 u_int8_t af; 1410 char anchor[MAXPATHLEN]; 1411 struct pf_pooladdr addr; 1412}; 1413 1414struct pfioc_rule { 1415 u_int32_t action; 1416 u_int32_t ticket; 1417 u_int32_t pool_ticket; 1418 u_int32_t nr; 1419 char anchor[MAXPATHLEN]; 1420 char anchor_call[MAXPATHLEN]; 1421 struct pf_rule rule; 1422}; 1423 1424struct pfioc_natlook { 1425 struct pf_addr saddr; 1426 struct pf_addr daddr; 1427 struct pf_addr rsaddr; 1428 struct pf_addr rdaddr; 1429 u_int16_t sport; 1430 u_int16_t dport; 1431 u_int16_t rsport; 1432 u_int16_t rdport; 1433 sa_family_t af; 1434 u_int8_t proto; 1435 u_int8_t direction; 1436}; 1437 1438struct pfioc_state { 1439 struct pfsync_state state; 1440}; 1441 1442struct pfioc_src_node_kill { 1443 sa_family_t psnk_af; 1444 struct pf_rule_addr psnk_src; 1445 struct pf_rule_addr psnk_dst; 1446 u_int psnk_killed; 1447}; 1448 1449struct pfioc_state_kill { 1450 struct pf_state_cmp psk_pfcmp; 1451 sa_family_t psk_af; 1452 int psk_proto; 1453 struct pf_rule_addr psk_src; 1454 struct pf_rule_addr psk_dst; 1455 char psk_ifname[IFNAMSIZ]; 1456 char psk_label[PF_RULE_LABEL_SIZE]; 1457 u_int psk_killed; 1458}; 1459 1460struct pfioc_states { 1461 int ps_len; 1462 union { 1463 caddr_t psu_buf; 1464 struct pfsync_state *psu_states; 1465 } ps_u; 1466#define ps_buf ps_u.psu_buf 1467#define ps_states ps_u.psu_states 1468}; 1469 1470struct pfioc_src_nodes { 1471 int psn_len; 1472 union { 1473 caddr_t psu_buf; 1474 struct pf_src_node *psu_src_nodes; 1475 } psn_u; 1476#define psn_buf psn_u.psu_buf 1477#define psn_src_nodes psn_u.psu_src_nodes 1478}; 1479 1480struct pfioc_if { 1481 char ifname[IFNAMSIZ]; 1482}; 1483 1484struct pfioc_tm { 1485 int timeout; 1486 int seconds; 1487}; 1488 1489struct pfioc_limit { 1490 int index; 1491 unsigned limit; 1492}; 1493 1494struct pfioc_altq { 1495 u_int32_t action; 1496 u_int32_t ticket; 1497 u_int32_t nr; 1498 struct pf_altq altq; 1499}; 1500 1501struct pfioc_qstats { 1502 u_int32_t ticket; 1503 u_int32_t nr; 1504 void *buf; 1505 int nbytes; 1506 u_int8_t scheduler; 1507}; 1508 1509struct pfioc_ruleset { 1510 u_int32_t nr; 1511 char path[MAXPATHLEN]; 1512 char name[PF_ANCHOR_NAME_SIZE]; 1513}; 1514 1515#define PF_RULESET_ALTQ (PF_RULESET_MAX) 1516#define PF_RULESET_TABLE (PF_RULESET_MAX+1) 1517struct pfioc_trans { 1518 int size; /* number of elements */ 1519 int esize; /* size of each element in bytes */ 1520 struct pfioc_trans_e { 1521 int rs_num; 1522 char anchor[MAXPATHLEN]; 1523 u_int32_t ticket; 1524 } *array; 1525}; 1526 1527#define PFR_FLAG_ATOMIC 0x00000001 /* unused */ 1528#define PFR_FLAG_DUMMY 0x00000002 1529#define PFR_FLAG_FEEDBACK 0x00000004 1530#define PFR_FLAG_CLSTATS 0x00000008 1531#define PFR_FLAG_ADDRSTOO 0x00000010 1532#define PFR_FLAG_REPLACE 0x00000020 1533#define PFR_FLAG_ALLRSETS 0x00000040 1534#define PFR_FLAG_ALLMASK 0x0000007F 1535#ifdef _KERNEL 1536#define PFR_FLAG_USERIOCTL 0x10000000 1537#endif 1538 1539struct pfioc_table { 1540 struct pfr_table pfrio_table; 1541 void *pfrio_buffer; 1542 int pfrio_esize; 1543 int pfrio_size; 1544 int pfrio_size2; 1545 int pfrio_nadd; 1546 int pfrio_ndel; 1547 int pfrio_nchange; 1548 int pfrio_flags; 1549 u_int32_t pfrio_ticket; 1550}; 1551#define pfrio_exists pfrio_nadd 1552#define pfrio_nzero pfrio_nadd 1553#define pfrio_nmatch pfrio_nadd 1554#define pfrio_naddr pfrio_size2 1555#define pfrio_setflag pfrio_size2 1556#define pfrio_clrflag pfrio_nadd 1557 1558struct pfioc_iface { 1559 char pfiio_name[IFNAMSIZ]; 1560 void *pfiio_buffer; 1561 int pfiio_esize; 1562 int pfiio_size; 1563 int pfiio_nzero; 1564 int pfiio_flags; 1565}; 1566 1567 1568/* 1569 * ioctl operations 1570 */ 1571 1572#define DIOCSTART _IO ('D', 1) 1573#define DIOCSTOP _IO ('D', 2) 1574#define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule) 1575#define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule) 1576#define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule) 1577/* XXX cut 8 - 17 */ 1578#define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill) 1579#define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state) 1580#define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if) 1581#define DIOCGETSTATUS _IOWR('D', 21, struct pf_status) 1582#define DIOCCLRSTATUS _IO ('D', 22) 1583#define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook) 1584#define DIOCSETDEBUG _IOWR('D', 24, u_int32_t) 1585#define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states) 1586#define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule) 1587/* XXX cut 26 - 28 */ 1588#define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm) 1589#define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm) 1590#define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state) 1591#define DIOCCLRRULECTRS _IO ('D', 38) 1592#define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit) 1593#define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit) 1594#define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill) 1595#define DIOCSTARTALTQ _IO ('D', 42) 1596#define DIOCSTOPALTQ _IO ('D', 43) 1597#define DIOCADDALTQ _IOWR('D', 45, struct pfioc_altq) 1598#define DIOCGETALTQS _IOWR('D', 47, struct pfioc_altq) 1599#define DIOCGETALTQ _IOWR('D', 48, struct pfioc_altq) 1600#define DIOCCHANGEALTQ _IOWR('D', 49, struct pfioc_altq) 1601#define DIOCGETQSTATS _IOWR('D', 50, struct pfioc_qstats) 1602#define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr) 1603#define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr) 1604#define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr) 1605#define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr) 1606#define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr) 1607/* XXX cut 55 - 57 */ 1608#define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset) 1609#define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset) 1610#define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table) 1611#define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table) 1612#define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table) 1613#define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table) 1614#define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table) 1615#define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table) 1616#define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table) 1617#define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table) 1618#define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table) 1619#define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table) 1620#define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table) 1621#define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table) 1622#define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table) 1623#define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table) 1624#define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table) 1625#define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table) 1626#define DIOCOSFPFLUSH _IO('D', 78) 1627#define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl) 1628#define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl) 1629#define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans) 1630#define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans) 1631#define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans) 1632#define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes) 1633#define DIOCCLRSRCNODES _IO('D', 85) 1634#define DIOCSETHOSTID _IOWR('D', 86, u_int32_t) 1635#define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface) 1636#define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface) 1637#define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface) 1638#define DIOCKILLSRCNODES _IOWR('D', 91, struct pfioc_src_node_kill) 1639struct pf_ifspeed { 1640 char ifname[IFNAMSIZ]; 1641 u_int32_t baudrate; 1642}; 1643#define DIOCGIFSPEED _IOWR('D', 92, struct pf_ifspeed) 1644 1645#ifdef _KERNEL 1646LIST_HEAD(pf_src_node_list, pf_src_node); 1647struct pf_srchash { 1648 struct pf_src_node_list nodes; 1649 struct mtx lock; 1650}; 1651 1652struct pf_keyhash { 1653 LIST_HEAD(, pf_state_key) keys; 1654 struct mtx lock; 1655}; 1656 1657struct pf_idhash { 1658 LIST_HEAD(, pf_state) states; 1659 struct mtx lock; 1660}; 1661 1662#define PF_HASHSIZ (32768) 1663VNET_DECLARE(struct pf_keyhash *, pf_keyhash); 1664VNET_DECLARE(struct pf_idhash *, pf_idhash); 1665VNET_DECLARE(u_long, pf_hashmask); 1666#define V_pf_keyhash VNET(pf_keyhash) 1667#define V_pf_idhash VNET(pf_idhash) 1668#define V_pf_hashmask VNET(pf_hashmask) 1669VNET_DECLARE(struct pf_srchash *, pf_srchash); 1670VNET_DECLARE(u_long, pf_srchashmask); 1671#define V_pf_srchash VNET(pf_srchash) 1672#define V_pf_srchashmask VNET(pf_srchashmask) 1673 1674#define PF_IDHASH(s) (be64toh((s)->id) % (V_pf_hashmask + 1)) 1675 1676VNET_DECLARE(void *, pf_swi_cookie); 1677#define V_pf_swi_cookie VNET(pf_swi_cookie) 1678 1679VNET_DECLARE(uint64_t, pf_stateid[MAXCPU]); 1680#define V_pf_stateid VNET(pf_stateid) 1681 1682TAILQ_HEAD(pf_altqqueue, pf_altq); 1683VNET_DECLARE(struct pf_altqqueue, pf_altqs[2]); 1684#define V_pf_altqs VNET(pf_altqs) 1685VNET_DECLARE(struct pf_palist, pf_pabuf); 1686#define V_pf_pabuf VNET(pf_pabuf) 1687 1688VNET_DECLARE(u_int32_t, ticket_altqs_active); 1689#define V_ticket_altqs_active VNET(ticket_altqs_active) 1690VNET_DECLARE(u_int32_t, ticket_altqs_inactive); 1691#define V_ticket_altqs_inactive VNET(ticket_altqs_inactive) 1692VNET_DECLARE(int, altqs_inactive_open); 1693#define V_altqs_inactive_open VNET(altqs_inactive_open) 1694VNET_DECLARE(u_int32_t, ticket_pabuf); 1695#define V_ticket_pabuf VNET(ticket_pabuf) 1696VNET_DECLARE(struct pf_altqqueue *, pf_altqs_active); 1697#define V_pf_altqs_active VNET(pf_altqs_active) 1698VNET_DECLARE(struct pf_altqqueue *, pf_altqs_inactive); 1699#define V_pf_altqs_inactive VNET(pf_altqs_inactive) 1700 1701VNET_DECLARE(struct pf_rulequeue, pf_unlinked_rules); 1702#define V_pf_unlinked_rules VNET(pf_unlinked_rules) 1703 1704void pf_initialize(void); 1705void pf_cleanup(void); 1706 1707struct pf_mtag *pf_get_mtag(struct mbuf *); 1708 1709extern void pf_calc_skip_steps(struct pf_rulequeue *); 1710#ifdef ALTQ 1711extern void pf_altq_ifnet_event(struct ifnet *, int); 1712#endif 1713VNET_DECLARE(uma_zone_t, pf_state_z); 1714#define V_pf_state_z VNET(pf_state_z) 1715VNET_DECLARE(uma_zone_t, pf_state_key_z); 1716#define V_pf_state_key_z VNET(pf_state_key_z) 1717VNET_DECLARE(uma_zone_t, pf_state_scrub_z); 1718#define V_pf_state_scrub_z VNET(pf_state_scrub_z) 1719 1720extern void pf_purge_thread(void *); 1721extern void pf_intr(void *); 1722extern void pf_purge_expired_src_nodes(void); 1723 1724extern int pf_unlink_state(struct pf_state *, u_int); 1725#define PF_ENTER_LOCKED 0x00000001 1726#define PF_RETURN_LOCKED 0x00000002 1727extern int pf_state_insert(struct pfi_kif *, 1728 struct pf_state_key *, 1729 struct pf_state_key *, 1730 struct pf_state *); 1731extern void pf_free_state(struct pf_state *); 1732 1733static __inline void 1734pf_ref_state(struct pf_state *s) 1735{ 1736 1737 refcount_acquire(&s->refs); 1738} 1739 1740static __inline int 1741pf_release_state(struct pf_state *s) 1742{ 1743 1744 if (refcount_release(&s->refs)) { 1745 pf_free_state(s); 1746 return (1); 1747 } else 1748 return (0); 1749} 1750 1751extern struct pf_state *pf_find_state_byid(uint64_t, uint32_t); 1752extern struct pf_state *pf_find_state_all(struct pf_state_key_cmp *, 1753 u_int, int *); 1754extern struct pf_src_node *pf_find_src_node(struct pf_addr *, 1755 struct pf_rule *, sa_family_t, int); 1756extern void pf_unlink_src_node(struct pf_src_node *); 1757extern void pf_unlink_src_node_locked(struct pf_src_node *); 1758extern u_int pf_free_src_nodes(struct pf_src_node_list *); 1759extern void pf_print_state(struct pf_state *); 1760extern void pf_print_flags(u_int8_t); 1761extern u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t, 1762 u_int8_t); 1763 1764VNET_DECLARE(struct ifnet *, sync_ifp); 1765#define V_sync_ifp VNET(sync_ifp); 1766VNET_DECLARE(struct pf_rule, pf_default_rule); 1767#define V_pf_default_rule VNET(pf_default_rule) 1768extern void pf_addrcpy(struct pf_addr *, struct pf_addr *, 1769 u_int8_t); 1770void pf_free_rule(struct pf_rule *); 1771 1772#ifdef INET 1773int pf_test(int, struct ifnet *, struct mbuf **, struct inpcb *); 1774#endif /* INET */ 1775 1776#ifdef INET6 1777int pf_test6(int, struct ifnet *, struct mbuf **, struct inpcb *); 1778void pf_poolmask(struct pf_addr *, struct pf_addr*, 1779 struct pf_addr *, struct pf_addr *, u_int8_t); 1780void pf_addr_inc(struct pf_addr *, sa_family_t); 1781#endif /* INET6 */ 1782 1783u_int32_t pf_new_isn(struct pf_state *); 1784void *pf_pull_hdr(struct mbuf *, int, void *, int, u_short *, u_short *, 1785 sa_family_t); 1786void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t); 1787void pf_send_deferred_syn(struct pf_state *); 1788int pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *, 1789 struct pf_addr *, sa_family_t); 1790int pf_match_addr_range(struct pf_addr *, struct pf_addr *, 1791 struct pf_addr *, sa_family_t); 1792int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t); 1793 1794void pf_normalize_init(void); 1795void pf_normalize_cleanup(void); 1796int pf_normalize_ip(struct mbuf **, int, struct pfi_kif *, u_short *, 1797 struct pf_pdesc *); 1798int pf_normalize_ip6(struct mbuf **, int, struct pfi_kif *, u_short *, 1799 struct pf_pdesc *); 1800int pf_normalize_tcp(int, struct pfi_kif *, struct mbuf *, int, int, void *, 1801 struct pf_pdesc *); 1802void pf_normalize_tcp_cleanup(struct pf_state *); 1803int pf_normalize_tcp_init(struct mbuf *, int, struct pf_pdesc *, 1804 struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *); 1805int pf_normalize_tcp_stateful(struct mbuf *, int, struct pf_pdesc *, 1806 u_short *, struct tcphdr *, struct pf_state *, 1807 struct pf_state_peer *, struct pf_state_peer *, int *); 1808u_int32_t 1809 pf_state_expires(const struct pf_state *); 1810void pf_purge_expired_fragments(void); 1811int pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kif *, 1812 int); 1813int pf_socket_lookup(int, struct pf_pdesc *, struct mbuf *); 1814struct pf_state_key *pf_alloc_state_key(int); 1815void pfr_initialize(void); 1816void pfr_cleanup(void); 1817int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t); 1818void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t, 1819 u_int64_t, int, int, int); 1820int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, sa_family_t); 1821void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *); 1822struct pfr_ktable * 1823 pfr_attach_table(struct pf_ruleset *, char *); 1824void pfr_detach_table(struct pfr_ktable *); 1825int pfr_clr_tables(struct pfr_table *, int *, int); 1826int pfr_add_tables(struct pfr_table *, int, int *, int); 1827int pfr_del_tables(struct pfr_table *, int, int *, int); 1828int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int); 1829int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int); 1830int pfr_clr_tstats(struct pfr_table *, int, int *, int); 1831int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int); 1832int pfr_clr_addrs(struct pfr_table *, int *, int); 1833int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *, long); 1834int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1835 int); 1836int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1837 int); 1838int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1839 int *, int *, int *, int, u_int32_t); 1840int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int); 1841int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int); 1842int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *, 1843 int); 1844int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1845 int); 1846int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int); 1847int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int); 1848int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int); 1849int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *, 1850 int *, u_int32_t, int); 1851 1852MALLOC_DECLARE(PFI_MTYPE); 1853VNET_DECLARE(struct pfi_kif *, pfi_all); 1854#define V_pfi_all VNET(pfi_all) 1855 1856void pfi_initialize(void); 1857void pfi_cleanup(void); 1858void pfi_kif_ref(struct pfi_kif *); 1859void pfi_kif_unref(struct pfi_kif *); 1860struct pfi_kif *pfi_kif_find(const char *); 1861struct pfi_kif *pfi_kif_attach(struct pfi_kif *, const char *); 1862int pfi_kif_match(struct pfi_kif *, struct pfi_kif *); 1863void pfi_kif_purge(void); 1864int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *, 1865 sa_family_t); 1866int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t); 1867void pfi_dynaddr_remove(struct pfi_dynaddr *); 1868void pfi_dynaddr_copyout(struct pf_addr_wrap *); 1869void pfi_update_status(const char *, struct pf_status *); 1870void pfi_get_ifaces(const char *, struct pfi_kif *, int *); 1871int pfi_set_flags(const char *, int); 1872int pfi_clear_flags(const char *, int); 1873 1874int pf_match_tag(struct mbuf *, struct pf_rule *, int *, int); 1875int pf_tag_packet(struct mbuf *, struct pf_pdesc *, int); 1876void pf_qid2qname(u_int32_t, char *); 1877 1878VNET_DECLARE(struct pf_status, pf_status); 1879#define V_pf_status VNET(pf_status) 1880 1881struct pf_limit { 1882 uma_zone_t zone; 1883 u_int limit; 1884}; 1885VNET_DECLARE(struct pf_limit, pf_limits[PF_LIMIT_MAX]); 1886#define V_pf_limits VNET(pf_limits) 1887 1888#endif /* _KERNEL */ 1889 1890#ifdef _KERNEL 1891VNET_DECLARE(struct pf_anchor_global, pf_anchors); 1892#define V_pf_anchors VNET(pf_anchors) 1893VNET_DECLARE(struct pf_anchor, pf_main_anchor); 1894#define V_pf_main_anchor VNET(pf_main_anchor) 1895#define pf_main_ruleset V_pf_main_anchor.ruleset 1896#endif 1897 1898/* these ruleset functions can be linked into userland programs (pfctl) */ 1899int pf_get_ruleset_number(u_int8_t); 1900void pf_init_ruleset(struct pf_ruleset *); 1901int pf_anchor_setup(struct pf_rule *, 1902 const struct pf_ruleset *, const char *); 1903int pf_anchor_copyout(const struct pf_ruleset *, 1904 const struct pf_rule *, struct pfioc_rule *); 1905void pf_anchor_remove(struct pf_rule *); 1906void pf_remove_if_empty_ruleset(struct pf_ruleset *); 1907struct pf_ruleset *pf_find_ruleset(const char *); 1908struct pf_ruleset *pf_find_or_create_ruleset(const char *); 1909void pf_rs_initialize(void); 1910 1911/* The fingerprint functions can be linked into userland programs (tcpdump) */ 1912int pf_osfp_add(struct pf_osfp_ioctl *); 1913#ifdef _KERNEL 1914struct pf_osfp_enlist * 1915 pf_osfp_fingerprint(struct pf_pdesc *, struct mbuf *, int, 1916 const struct tcphdr *); 1917#endif /* _KERNEL */ 1918void pf_osfp_flush(void); 1919int pf_osfp_get(struct pf_osfp_ioctl *); 1920int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t); 1921 1922#ifdef _KERNEL 1923void pf_print_host(struct pf_addr *, u_int16_t, u_int8_t); 1924 1925void pf_step_into_anchor(struct pf_anchor_stackframe *, int *, 1926 struct pf_ruleset **, int, struct pf_rule **, 1927 struct pf_rule **, int *); 1928int pf_step_out_of_anchor(struct pf_anchor_stackframe *, int *, 1929 struct pf_ruleset **, int, struct pf_rule **, 1930 struct pf_rule **, int *); 1931 1932int pf_map_addr(u_int8_t, struct pf_rule *, 1933 struct pf_addr *, struct pf_addr *, 1934 struct pf_addr *, struct pf_src_node **); 1935struct pf_rule *pf_get_translation(struct pf_pdesc *, struct mbuf *, 1936 int, int, struct pfi_kif *, struct pf_src_node **, 1937 struct pf_state_key **, struct pf_state_key **, 1938 struct pf_addr *, struct pf_addr *, 1939 uint16_t, uint16_t, struct pf_anchor_stackframe *); 1940 1941struct pf_state_key *pf_state_key_setup(struct pf_pdesc *, struct pf_addr *, 1942 struct pf_addr *, u_int16_t, u_int16_t); 1943struct pf_state_key *pf_state_key_clone(struct pf_state_key *); 1944#endif /* _KERNEL */ 1945 1946#endif /* _NET_PFVAR_H_ */ 1947