pf.h revision 153725
1/* $FreeBSD: head/sys/contrib/pf/net/pfvar.h 153725 2005-12-25 23:52:00Z mlaier $ */ 2/* $OpenBSD: pfvar.h,v 1.213 2005/03/03 07:13:39 dhartmei Exp $ */ 3 4/* 5 * Copyright (c) 2001 Daniel Hartmeier 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * - Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * - Redistributions in binary form must reproduce the above 15 * copyright notice, this list of conditions and the following 16 * disclaimer in the documentation and/or other materials provided 17 * with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 22 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 23 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 25 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 26 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 27 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 29 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 * 32 */ 33 34#ifndef _NET_PFVAR_H_ 35#define _NET_PFVAR_H_ 36 37#include <sys/param.h> 38#include <sys/types.h> 39#include <sys/queue.h> 40#include <sys/tree.h> 41 42#include <net/radix.h> 43#include <net/route.h> 44#ifdef __FreeBSD__ 45#include <net/if_clone.h> 46#include <vm/uma.h> 47#else 48#include <netinet/ip_ipsp.h> 49#endif 50 51#ifdef __FreeBSD__ 52#include <netinet/in.h> 53#endif 54 55#include <netinet/tcp_fsm.h> 56 57struct ip; 58#ifdef __FreeBSD__ 59struct inpcb; 60#endif 61 62#define PF_TCPS_PROXY_SRC ((TCP_NSTATES)+0) 63#define PF_TCPS_PROXY_DST ((TCP_NSTATES)+1) 64 65enum { PF_INOUT, PF_IN, PF_OUT }; 66enum { PF_LAN_EXT, PF_EXT_GWY, PF_ID }; 67enum { PF_PASS, PF_DROP, PF_SCRUB, PF_NOSCRUB, PF_NAT, PF_NONAT, 68 PF_BINAT, PF_NOBINAT, PF_RDR, PF_NORDR, PF_SYNPROXY_DROP }; 69enum { PF_RULESET_SCRUB, PF_RULESET_FILTER, PF_RULESET_NAT, 70 PF_RULESET_BINAT, PF_RULESET_RDR, PF_RULESET_MAX }; 71enum { PF_OP_NONE, PF_OP_IRG, PF_OP_EQ, PF_OP_NE, PF_OP_LT, 72 PF_OP_LE, PF_OP_GT, PF_OP_GE, PF_OP_XRG, PF_OP_RRG }; 73enum { PF_DEBUG_NONE, PF_DEBUG_URGENT, PF_DEBUG_MISC, PF_DEBUG_NOISY }; 74enum { PF_CHANGE_NONE, PF_CHANGE_ADD_HEAD, PF_CHANGE_ADD_TAIL, 75 PF_CHANGE_ADD_BEFORE, PF_CHANGE_ADD_AFTER, 76 PF_CHANGE_REMOVE, PF_CHANGE_GET_TICKET }; 77/* 78 * Note about PFTM_*: real indices into pf_rule.timeout[] come before 79 * PFTM_MAX, special cases afterwards. See pf_state_expires(). 80 */ 81enum { PFTM_TCP_FIRST_PACKET, PFTM_TCP_OPENING, PFTM_TCP_ESTABLISHED, 82 PFTM_TCP_CLOSING, PFTM_TCP_FIN_WAIT, PFTM_TCP_CLOSED, 83 PFTM_UDP_FIRST_PACKET, PFTM_UDP_SINGLE, PFTM_UDP_MULTIPLE, 84 PFTM_ICMP_FIRST_PACKET, PFTM_ICMP_ERROR_REPLY, 85 PFTM_OTHER_FIRST_PACKET, PFTM_OTHER_SINGLE, 86 PFTM_OTHER_MULTIPLE, PFTM_FRAG, PFTM_INTERVAL, 87 PFTM_ADAPTIVE_START, PFTM_ADAPTIVE_END, PFTM_SRC_NODE, 88 PFTM_TS_DIFF, PFTM_MAX, PFTM_PURGE, PFTM_UNTIL_PACKET }; 89 90/* PFTM default values */ 91#define PFTM_TCP_FIRST_PACKET_VAL 120 /* First TCP packet */ 92#define PFTM_TCP_OPENING_VAL 30 /* No response yet */ 93#define PFTM_TCP_ESTABLISHED_VAL 24*60*60/* Established */ 94#define PFTM_TCP_CLOSING_VAL 15 * 60 /* Half closed */ 95#define PFTM_TCP_FIN_WAIT_VAL 45 /* Got both FINs */ 96#define PFTM_TCP_CLOSED_VAL 90 /* Got a RST */ 97#define PFTM_UDP_FIRST_PACKET_VAL 60 /* First UDP packet */ 98#define PFTM_UDP_SINGLE_VAL 30 /* Unidirectional */ 99#define PFTM_UDP_MULTIPLE_VAL 60 /* Bidirectional */ 100#define PFTM_ICMP_FIRST_PACKET_VAL 20 /* First ICMP packet */ 101#define PFTM_ICMP_ERROR_REPLY_VAL 10 /* Got error response */ 102#define PFTM_OTHER_FIRST_PACKET_VAL 60 /* First packet */ 103#define PFTM_OTHER_SINGLE_VAL 30 /* Unidirectional */ 104#define PFTM_OTHER_MULTIPLE_VAL 60 /* Bidirectional */ 105#define PFTM_FRAG_VAL 30 /* Fragment expire */ 106#define PFTM_INTERVAL_VAL 10 /* Expire interval */ 107#define PFTM_SRC_NODE_VAL 0 /* Source tracking */ 108#define PFTM_TS_DIFF_VAL 30 /* Allowed TS diff */ 109 110enum { PF_NOPFROUTE, PF_FASTROUTE, PF_ROUTETO, PF_DUPTO, PF_REPLYTO }; 111enum { PF_LIMIT_STATES, PF_LIMIT_SRC_NODES, PF_LIMIT_FRAGS, PF_LIMIT_MAX }; 112#define PF_POOL_IDMASK 0x0f 113enum { PF_POOL_NONE, PF_POOL_BITMASK, PF_POOL_RANDOM, 114 PF_POOL_SRCHASH, PF_POOL_ROUNDROBIN }; 115enum { PF_ADDR_ADDRMASK, PF_ADDR_NOROUTE, PF_ADDR_DYNIFTL, 116 PF_ADDR_TABLE, PF_ADDR_RTLABEL }; 117#define PF_POOL_TYPEMASK 0x0f 118#define PF_POOL_STICKYADDR 0x20 119#define PF_WSCALE_FLAG 0x80 120#define PF_WSCALE_MASK 0x0f 121 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#ifdef __FreeBSD__ 154#define RTLABEL_LEN 32 155#endif 156 char rtlabelname[RTLABEL_LEN]; 157 u_int32_t rtlabel; 158 } v; 159 union { 160 struct pfi_dynaddr *dyn; 161 struct pfr_ktable *tbl; 162 int dyncnt; 163 int tblcnt; 164 } p; 165 u_int8_t type; /* PF_ADDR_* */ 166 u_int8_t iflags; /* PFI_AFLAG_* */ 167}; 168 169#ifdef _KERNEL 170 171struct pfi_dynaddr { 172 struct pf_addr pfid_addr4; 173 struct pf_addr pfid_mask4; 174 struct pf_addr pfid_addr6; 175 struct pf_addr pfid_mask6; 176 struct pfr_ktable *pfid_kt; 177 struct pfi_kif *pfid_kif; 178 void *pfid_hook_cookie; 179 int pfid_net; /* optional mask, or 128 */ 180 int pfid_acnt4; /* address count, IPv4 */ 181 int pfid_acnt6; /* address count, IPv6 */ 182 sa_family_t pfid_af; /* rule address family */ 183 u_int8_t pfid_iflags; /* PFI_AFLAG_* */ 184}; 185 186/* 187 * Address manipulation macros 188 */ 189 190#ifdef __FreeBSD__ 191#define splsoftnet() splnet() 192 193#define HTONL(x) (x) = htonl((__uint32_t)(x)) 194#define HTONS(x) (x) = htons((__uint16_t)(x)) 195#define NTOHL(x) (x) = ntohl((__uint32_t)(x)) 196#define NTOHS(x) (x) = ntohs((__uint16_t)(x)) 197 198#define PF_NAME "pf" 199 200#define PR_NOWAIT M_NOWAIT 201#define pool_get(p, f) uma_zalloc(*(p), (f)) 202#define pool_put(p, o) uma_zfree(*(p), (o)) 203 204#define UMA_CREATE(var, type, desc) \ 205 var = uma_zcreate(desc, sizeof(type), \ 206 NULL, NULL, NULL, NULL, UMA_ALIGN_PTR, 0); \ 207 if (var == NULL) break 208#define UMA_DESTROY(var) \ 209 if(var) uma_zdestroy(var) 210 211extern struct mtx pf_task_mtx; 212 213#define PF_ASSERT(h) mtx_assert(&pf_task_mtx, (h)) 214 215#define PF_LOCK() do { \ 216 PF_ASSERT(MA_NOTOWNED); \ 217 mtx_lock(&pf_task_mtx); \ 218} while(0) 219#define PF_UNLOCK() do { \ 220 PF_ASSERT(MA_OWNED); \ 221 mtx_unlock(&pf_task_mtx); \ 222} while(0) 223 224#define PF_COPYIN(uaddr, kaddr, len, r) do { \ 225 PF_UNLOCK(); \ 226 r = copyin((uaddr), (kaddr), (len)); \ 227 PF_LOCK(); \ 228} while(0) 229 230#define PF_COPYOUT(kaddr, uaddr, len, r) do { \ 231 PF_UNLOCK(); \ 232 r = copyout((kaddr), (uaddr), (len)); \ 233 PF_LOCK(); \ 234} while(0) 235 236extern void init_pf_mutex(void); 237extern void destroy_pf_mutex(void); 238 239#define PF_MODVER 1 240#define PFLOG_MODVER 1 241#define PFSYNC_MODVER 1 242 243#define PFLOG_MINVER 1 244#define PFLOG_PREFVER PFLOG_MODVER 245#define PFLOG_MAXVER 1 246#define PFSYNC_MINVER 1 247#define PFSYNC_PREFVER PFSYNC_MODVER 248#define PFSYNC_MAXVER 1 249 250/* prototyped for pf_subr.c */ 251struct hook_desc { 252 TAILQ_ENTRY(hook_desc) hd_list; 253 void (*hd_fn)(void *); 254 void *hd_arg; 255}; 256TAILQ_HEAD(hook_desc_head, hook_desc); 257 258void *hook_establish(struct hook_desc_head *, int, void (*)(void *), void *); 259void hook_disestablish(struct hook_desc_head *, void *); 260void dohooks(struct hook_desc_head *, int); 261 262#define HOOK_REMOVE 0x01 263#define HOOK_FREE 0x02 264#endif /* __FreeBSD__ */ 265 266#ifdef INET 267#ifndef INET6 268#define PF_INET_ONLY 269#endif /* ! INET6 */ 270#endif /* INET */ 271 272#ifdef INET6 273#ifndef INET 274#define PF_INET6_ONLY 275#endif /* ! INET */ 276#endif /* INET6 */ 277 278#ifdef INET 279#ifdef INET6 280#define PF_INET_INET6 281#endif /* INET6 */ 282#endif /* INET */ 283 284#else 285 286#define PF_INET_INET6 287 288#endif /* _KERNEL */ 289 290/* Both IPv4 and IPv6 */ 291#ifdef PF_INET_INET6 292 293#define PF_AEQ(a, b, c) \ 294 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \ 295 ((a)->addr32[3] == (b)->addr32[3] && \ 296 (a)->addr32[2] == (b)->addr32[2] && \ 297 (a)->addr32[1] == (b)->addr32[1] && \ 298 (a)->addr32[0] == (b)->addr32[0])) \ 299 300#define PF_ANEQ(a, b, c) \ 301 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \ 302 ((a)->addr32[3] != (b)->addr32[3] || \ 303 (a)->addr32[2] != (b)->addr32[2] || \ 304 (a)->addr32[1] != (b)->addr32[1] || \ 305 (a)->addr32[0] != (b)->addr32[0])) \ 306 307#define PF_AZERO(a, c) \ 308 ((c == AF_INET && !(a)->addr32[0]) || \ 309 (!(a)->addr32[0] && !(a)->addr32[1] && \ 310 !(a)->addr32[2] && !(a)->addr32[3] )) \ 311 312#define PF_MATCHA(n, a, m, b, f) \ 313 pf_match_addr(n, a, m, b, f) 314 315#define PF_ACPY(a, b, f) \ 316 pf_addrcpy(a, b, f) 317 318#define PF_AINC(a, f) \ 319 pf_addr_inc(a, f) 320 321#define PF_POOLMASK(a, b, c, d, f) \ 322 pf_poolmask(a, b, c, d, f) 323 324#else 325 326/* Just IPv6 */ 327 328#ifdef PF_INET6_ONLY 329 330#define PF_AEQ(a, b, c) \ 331 ((a)->addr32[3] == (b)->addr32[3] && \ 332 (a)->addr32[2] == (b)->addr32[2] && \ 333 (a)->addr32[1] == (b)->addr32[1] && \ 334 (a)->addr32[0] == (b)->addr32[0]) \ 335 336#define PF_ANEQ(a, b, c) \ 337 ((a)->addr32[3] != (b)->addr32[3] || \ 338 (a)->addr32[2] != (b)->addr32[2] || \ 339 (a)->addr32[1] != (b)->addr32[1] || \ 340 (a)->addr32[0] != (b)->addr32[0]) \ 341 342#define PF_AZERO(a, c) \ 343 (!(a)->addr32[0] && \ 344 !(a)->addr32[1] && \ 345 !(a)->addr32[2] && \ 346 !(a)->addr32[3] ) \ 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 pf_addrcpy(a, b, f) 353 354#define PF_AINC(a, f) \ 355 pf_addr_inc(a, f) 356 357#define PF_POOLMASK(a, b, c, d, f) \ 358 pf_poolmask(a, b, c, d, f) 359 360#else 361 362/* Just IPv4 */ 363#ifdef PF_INET_ONLY 364 365#define PF_AEQ(a, b, c) \ 366 ((a)->addr32[0] == (b)->addr32[0]) 367 368#define PF_ANEQ(a, b, c) \ 369 ((a)->addr32[0] != (b)->addr32[0]) 370 371#define PF_AZERO(a, c) \ 372 (!(a)->addr32[0]) 373 374#define PF_MATCHA(n, a, m, b, f) \ 375 pf_match_addr(n, a, m, b, f) 376 377#define PF_ACPY(a, b, f) \ 378 (a)->v4.s_addr = (b)->v4.s_addr 379 380#define PF_AINC(a, f) \ 381 do { \ 382 (a)->addr32[0] = htonl(ntohl((a)->addr32[0]) + 1); \ 383 } while (0) 384 385#define PF_POOLMASK(a, b, c, d, f) \ 386 do { \ 387 (a)->addr32[0] = ((b)->addr32[0] & (c)->addr32[0]) | \ 388 (((c)->addr32[0] ^ 0xffffffff ) & (d)->addr32[0]); \ 389 } while (0) 390 391#endif /* PF_INET_ONLY */ 392#endif /* PF_INET6_ONLY */ 393#endif /* PF_INET_INET6 */ 394 395#define PF_MISMATCHAW(aw, x, af, neg) \ 396 ( \ 397 (((aw)->type == PF_ADDR_NOROUTE && \ 398 pf_routable((x), (af))) || \ 399 ((aw)->type == PF_ADDR_RTLABEL && \ 400 !pf_rtlabel_match((x), (af), (aw))) || \ 401 ((aw)->type == PF_ADDR_TABLE && \ 402 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \ 403 ((aw)->type == PF_ADDR_DYNIFTL && \ 404 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \ 405 ((aw)->type == PF_ADDR_ADDRMASK && \ 406 !PF_AZERO(&(aw)->v.a.mask, (af)) && \ 407 !PF_MATCHA(0, &(aw)->v.a.addr, \ 408 &(aw)->v.a.mask, (x), (af)))) != \ 409 (neg) \ 410 ) 411 412struct pf_rule_uid { 413 uid_t uid[2]; 414 u_int8_t op; 415}; 416 417struct pf_rule_gid { 418 uid_t gid[2]; 419 u_int8_t op; 420}; 421 422struct pf_rule_addr { 423 struct pf_addr_wrap addr; 424 u_int16_t port[2]; 425 u_int8_t neg; 426 u_int8_t port_op; 427}; 428 429struct pf_pooladdr { 430 struct pf_addr_wrap addr; 431 TAILQ_ENTRY(pf_pooladdr) entries; 432 char ifname[IFNAMSIZ]; 433 struct pfi_kif *kif; 434}; 435 436TAILQ_HEAD(pf_palist, pf_pooladdr); 437 438struct pf_poolhashkey { 439 union { 440 u_int8_t key8[16]; 441 u_int16_t key16[8]; 442 u_int32_t key32[4]; 443 } pfk; /* 128-bit hash key */ 444#define key8 pfk.key8 445#define key16 pfk.key16 446#define key32 pfk.key32 447}; 448 449struct pf_pool { 450 struct pf_palist list; 451 struct pf_pooladdr *cur; 452 struct pf_poolhashkey key; 453 struct pf_addr counter; 454 int tblidx; 455 u_int16_t proxy_port[2]; 456 u_int8_t port_op; 457 u_int8_t opts; 458}; 459 460 461/* A packed Operating System description for fingerprinting */ 462typedef u_int32_t pf_osfp_t; 463#define PF_OSFP_ANY ((pf_osfp_t)0) 464#define PF_OSFP_UNKNOWN ((pf_osfp_t)-1) 465#define PF_OSFP_NOMATCH ((pf_osfp_t)-2) 466 467struct pf_osfp_entry { 468 SLIST_ENTRY(pf_osfp_entry) fp_entry; 469 pf_osfp_t fp_os; 470 int fp_enflags; 471#define PF_OSFP_EXPANDED 0x001 /* expanded entry */ 472#define PF_OSFP_GENERIC 0x002 /* generic signature */ 473#define PF_OSFP_NODETAIL 0x004 /* no p0f details */ 474#define PF_OSFP_LEN 32 475 char fp_class_nm[PF_OSFP_LEN]; 476 char fp_version_nm[PF_OSFP_LEN]; 477 char fp_subtype_nm[PF_OSFP_LEN]; 478}; 479#define PF_OSFP_ENTRY_EQ(a, b) \ 480 ((a)->fp_os == (b)->fp_os && \ 481 memcmp((a)->fp_class_nm, (b)->fp_class_nm, PF_OSFP_LEN) == 0 && \ 482 memcmp((a)->fp_version_nm, (b)->fp_version_nm, PF_OSFP_LEN) == 0 && \ 483 memcmp((a)->fp_subtype_nm, (b)->fp_subtype_nm, PF_OSFP_LEN) == 0) 484 485/* handle pf_osfp_t packing */ 486#define _FP_RESERVED_BIT 1 /* For the special negative #defines */ 487#define _FP_UNUSED_BITS 1 488#define _FP_CLASS_BITS 10 /* OS Class (Windows, Linux) */ 489#define _FP_VERSION_BITS 10 /* OS version (95, 98, NT, 2.4.54, 3.2) */ 490#define _FP_SUBTYPE_BITS 10 /* patch level (NT SP4, SP3, ECN patch) */ 491#define PF_OSFP_UNPACK(osfp, class, version, subtype) do { \ 492 (class) = ((osfp) >> (_FP_VERSION_BITS+_FP_SUBTYPE_BITS)) & \ 493 ((1 << _FP_CLASS_BITS) - 1); \ 494 (version) = ((osfp) >> _FP_SUBTYPE_BITS) & \ 495 ((1 << _FP_VERSION_BITS) - 1);\ 496 (subtype) = (osfp) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 497} while(0) 498#define PF_OSFP_PACK(osfp, class, version, subtype) do { \ 499 (osfp) = ((class) & ((1 << _FP_CLASS_BITS) - 1)) << (_FP_VERSION_BITS \ 500 + _FP_SUBTYPE_BITS); \ 501 (osfp) |= ((version) & ((1 << _FP_VERSION_BITS) - 1)) << \ 502 _FP_SUBTYPE_BITS; \ 503 (osfp) |= (subtype) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 504} while(0) 505 506/* the fingerprint of an OSes TCP SYN packet */ 507typedef u_int64_t pf_tcpopts_t; 508struct pf_os_fingerprint { 509 SLIST_HEAD(pf_osfp_enlist, pf_osfp_entry) fp_oses; /* list of matches */ 510 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 511 u_int16_t fp_wsize; /* TCP window size */ 512 u_int16_t fp_psize; /* ip->ip_len */ 513 u_int16_t fp_mss; /* TCP MSS */ 514 u_int16_t fp_flags; 515#define PF_OSFP_WSIZE_MOD 0x0001 /* Window modulus */ 516#define PF_OSFP_WSIZE_DC 0x0002 /* Window don't care */ 517#define PF_OSFP_WSIZE_MSS 0x0004 /* Window multiple of MSS */ 518#define PF_OSFP_WSIZE_MTU 0x0008 /* Window multiple of MTU */ 519#define PF_OSFP_PSIZE_MOD 0x0010 /* packet size modulus */ 520#define PF_OSFP_PSIZE_DC 0x0020 /* packet size don't care */ 521#define PF_OSFP_WSCALE 0x0040 /* TCP window scaling */ 522#define PF_OSFP_WSCALE_MOD 0x0080 /* TCP window scale modulus */ 523#define PF_OSFP_WSCALE_DC 0x0100 /* TCP window scale dont-care */ 524#define PF_OSFP_MSS 0x0200 /* TCP MSS */ 525#define PF_OSFP_MSS_MOD 0x0400 /* TCP MSS modulus */ 526#define PF_OSFP_MSS_DC 0x0800 /* TCP MSS dont-care */ 527#define PF_OSFP_DF 0x1000 /* IPv4 don't fragment bit */ 528#define PF_OSFP_TS0 0x2000 /* Zero timestamp */ 529 u_int8_t fp_optcnt; /* TCP option count */ 530 u_int8_t fp_wscale; /* TCP window scaling */ 531 u_int8_t fp_ttl; /* IPv4 TTL */ 532#define PF_OSFP_MAXTTL_OFFSET 40 533/* TCP options packing */ 534#define PF_OSFP_TCPOPT_NOP 0x0 /* TCP NOP option */ 535#define PF_OSFP_TCPOPT_WSCALE 0x1 /* TCP window scaling option */ 536#define PF_OSFP_TCPOPT_MSS 0x2 /* TCP max segment size opt */ 537#define PF_OSFP_TCPOPT_SACK 0x3 /* TCP SACK OK option */ 538#define PF_OSFP_TCPOPT_TS 0x4 /* TCP timestamp option */ 539#define PF_OSFP_TCPOPT_BITS 3 /* bits used by each option */ 540#define PF_OSFP_MAX_OPTS \ 541 (sizeof(((struct pf_os_fingerprint *)0)->fp_tcpopts) * 8) \ 542 / PF_OSFP_TCPOPT_BITS 543 544 SLIST_ENTRY(pf_os_fingerprint) fp_next; 545}; 546 547struct pf_osfp_ioctl { 548 struct pf_osfp_entry fp_os; 549 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 550 u_int16_t fp_wsize; /* TCP window size */ 551 u_int16_t fp_psize; /* ip->ip_len */ 552 u_int16_t fp_mss; /* TCP MSS */ 553 u_int16_t fp_flags; 554 u_int8_t fp_optcnt; /* TCP option count */ 555 u_int8_t fp_wscale; /* TCP window scaling */ 556 u_int8_t fp_ttl; /* IPv4 TTL */ 557 558 int fp_getnum; /* DIOCOSFPGET number */ 559}; 560 561 562union pf_rule_ptr { 563 struct pf_rule *ptr; 564 u_int32_t nr; 565}; 566 567#define PF_ANCHOR_NAME_SIZE 64 568 569struct pf_rule { 570 struct pf_rule_addr src; 571 struct pf_rule_addr dst; 572#define PF_SKIP_IFP 0 573#define PF_SKIP_DIR 1 574#define PF_SKIP_AF 2 575#define PF_SKIP_PROTO 3 576#define PF_SKIP_SRC_ADDR 4 577#define PF_SKIP_SRC_PORT 5 578#define PF_SKIP_DST_ADDR 6 579#define PF_SKIP_DST_PORT 7 580#define PF_SKIP_COUNT 8 581 union pf_rule_ptr skip[PF_SKIP_COUNT]; 582#define PF_RULE_LABEL_SIZE 64 583 char label[PF_RULE_LABEL_SIZE]; 584#define PF_QNAME_SIZE 16 585 char ifname[IFNAMSIZ]; 586 char qname[PF_QNAME_SIZE]; 587 char pqname[PF_QNAME_SIZE]; 588#define PF_TAG_NAME_SIZE 16 589 char tagname[PF_TAG_NAME_SIZE]; 590 char match_tagname[PF_TAG_NAME_SIZE]; 591 592 char overload_tblname[PF_TABLE_NAME_SIZE]; 593 594 TAILQ_ENTRY(pf_rule) entries; 595 struct pf_pool rpool; 596 597 u_int64_t evaluations; 598 u_int64_t packets; 599 u_int64_t bytes; 600 601 struct pfi_kif *kif; 602 struct pf_anchor *anchor; 603 struct pfr_ktable *overload_tbl; 604 605 pf_osfp_t os_fingerprint; 606 607 u_int32_t timeout[PFTM_MAX]; 608 u_int32_t states; 609 u_int32_t max_states; 610 u_int32_t src_nodes; 611 u_int32_t max_src_nodes; 612 u_int32_t max_src_states; 613 u_int32_t max_src_conn; 614 struct { 615 u_int32_t limit; 616 u_int32_t seconds; 617 } max_src_conn_rate; 618 u_int32_t qid; 619 u_int32_t pqid; 620 u_int32_t rt_listid; 621 u_int32_t nr; 622 u_int32_t prob; 623 624 u_int16_t return_icmp; 625 u_int16_t return_icmp6; 626 u_int16_t max_mss; 627 u_int16_t tag; 628 u_int16_t match_tag; 629 630 struct pf_rule_uid uid; 631 struct pf_rule_gid gid; 632 633 u_int32_t rule_flag; 634 u_int8_t action; 635 u_int8_t direction; 636 u_int8_t log; 637 u_int8_t quick; 638 u_int8_t ifnot; 639 u_int8_t match_tag_not; 640 u_int8_t natpass; 641 642#define PF_STATE_NORMAL 0x1 643#define PF_STATE_MODULATE 0x2 644#define PF_STATE_SYNPROXY 0x3 645 u_int8_t keep_state; 646 sa_family_t af; 647 u_int8_t proto; 648 u_int8_t type; 649 u_int8_t code; 650 u_int8_t flags; 651 u_int8_t flagset; 652 u_int8_t min_ttl; 653 u_int8_t allow_opts; 654 u_int8_t rt; 655 u_int8_t return_ttl; 656 u_int8_t tos; 657 u_int8_t anchor_relative; 658 u_int8_t anchor_wildcard; 659 660#define PF_FLUSH 0x01 661#define PF_FLUSH_GLOBAL 0x02 662 u_int8_t flush; 663}; 664 665/* rule flags */ 666#define PFRULE_DROP 0x0000 667#define PFRULE_RETURNRST 0x0001 668#define PFRULE_FRAGMENT 0x0002 669#define PFRULE_RETURNICMP 0x0004 670#define PFRULE_RETURN 0x0008 671#define PFRULE_NOSYNC 0x0010 672#define PFRULE_SRCTRACK 0x0020 /* track source states */ 673#define PFRULE_RULESRCTRACK 0x0040 /* per rule */ 674 675/* scrub flags */ 676#define PFRULE_NODF 0x0100 677#define PFRULE_FRAGCROP 0x0200 /* non-buffering frag cache */ 678#define PFRULE_FRAGDROP 0x0400 /* drop funny fragments */ 679#define PFRULE_RANDOMID 0x0800 680#define PFRULE_REASSEMBLE_TCP 0x1000 681 682/* rule flags again */ 683#define PFRULE_IFBOUND 0x00010000 /* if-bound */ 684#define PFRULE_GRBOUND 0x00020000 /* group-bound */ 685 686#define PFSTATE_HIWAT 10000 /* default state table size */ 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 RB_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_int32_t bytes; 705 u_int32_t packets; 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 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_int8_t state; /* active state level */ 745 u_int8_t wscale; /* window scaling factor */ 746 u_int16_t mss; /* Maximum segment size option */ 747 struct pf_state_scrub *scrub; /* state is scrubbed */ 748}; 749 750TAILQ_HEAD(pf_state_queue, pf_state); 751 752struct pf_state { 753 u_int64_t id; 754 union { 755 struct { 756 RB_ENTRY(pf_state) entry_lan_ext; 757 RB_ENTRY(pf_state) entry_ext_gwy; 758 RB_ENTRY(pf_state) entry_id; 759 TAILQ_ENTRY(pf_state) entry_updates; 760 struct pfi_kif *kif; 761 } s; 762 char ifname[IFNAMSIZ]; 763 } u; 764 struct pf_state_host lan; 765 struct pf_state_host gwy; 766 struct pf_state_host ext; 767 struct pf_state_peer src; 768 struct pf_state_peer dst; 769 union pf_rule_ptr rule; 770 union pf_rule_ptr anchor; 771 union pf_rule_ptr nat_rule; 772 struct pf_addr rt_addr; 773 struct pfi_kif *rt_kif; 774 struct pf_src_node *src_node; 775 struct pf_src_node *nat_src_node; 776 u_int32_t creation; 777 u_int32_t expire; 778 u_int32_t pfsync_time; 779 u_int32_t packets[2]; 780 u_int32_t bytes[2]; 781 u_int32_t creatorid; 782 u_int16_t tag; 783 sa_family_t af; 784 u_int8_t proto; 785 u_int8_t direction; 786 u_int8_t log; 787 u_int8_t allow_opts; 788 u_int8_t timeout; 789 u_int8_t sync_flags; 790#define PFSTATE_NOSYNC 0x01 791#define PFSTATE_FROMSYNC 0x02 792#define PFSTATE_STALE 0x04 793#ifdef __FreeBSD__ 794 u_int8_t local_flags; 795#define PFSTATE_EXPIRING 0x01 796#define PFSTATE_SRC_CONN 0x02 797#else 798 u_int8_t pad; 799#endif 800}; 801 802TAILQ_HEAD(pf_rulequeue, pf_rule); 803 804struct pf_anchor; 805 806struct pf_ruleset { 807 struct { 808 struct pf_rulequeue queues[2]; 809 struct { 810 struct pf_rulequeue *ptr; 811 u_int32_t ticket; 812 int open; 813 } active, inactive; 814 } rules[PF_RULESET_MAX]; 815 struct pf_anchor *anchor; 816 u_int32_t tticket; 817 int tables; 818 int topen; 819}; 820 821RB_HEAD(pf_anchor_global, pf_anchor); 822RB_HEAD(pf_anchor_node, pf_anchor); 823struct pf_anchor { 824 RB_ENTRY(pf_anchor) entry_global; 825 RB_ENTRY(pf_anchor) entry_node; 826 struct pf_anchor *parent; 827 struct pf_anchor_node children; 828 char name[PF_ANCHOR_NAME_SIZE]; 829 char path[MAXPATHLEN]; 830 struct pf_ruleset ruleset; 831 int refcnt; /* anchor rules */ 832}; 833RB_PROTOTYPE(pf_anchor_global, pf_anchor, entry_global, pf_anchor_compare); 834RB_PROTOTYPE(pf_anchor_node, pf_anchor, entry_node, pf_anchor_compare); 835 836#define PF_RESERVED_ANCHOR "_pf" 837 838#define PFR_TFLAG_PERSIST 0x00000001 839#define PFR_TFLAG_CONST 0x00000002 840#define PFR_TFLAG_ACTIVE 0x00000004 841#define PFR_TFLAG_INACTIVE 0x00000008 842#define PFR_TFLAG_REFERENCED 0x00000010 843#define PFR_TFLAG_REFDANCHOR 0x00000020 844#define PFR_TFLAG_USRMASK 0x00000003 845#define PFR_TFLAG_SETMASK 0x0000003C 846#define PFR_TFLAG_ALLMASK 0x0000003F 847 848struct pfr_table { 849 char pfrt_anchor[MAXPATHLEN]; 850 char pfrt_name[PF_TABLE_NAME_SIZE]; 851 u_int32_t pfrt_flags; 852 u_int8_t pfrt_fback; 853}; 854 855enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED, 856 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE, 857 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_MAX }; 858 859struct pfr_addr { 860 union { 861 struct in_addr _pfra_ip4addr; 862 struct in6_addr _pfra_ip6addr; 863 } pfra_u; 864 u_int8_t pfra_af; 865 u_int8_t pfra_net; 866 u_int8_t pfra_not; 867 u_int8_t pfra_fback; 868}; 869#define pfra_ip4addr pfra_u._pfra_ip4addr 870#define pfra_ip6addr pfra_u._pfra_ip6addr 871 872enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX }; 873enum { PFR_OP_BLOCK, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX }; 874#define PFR_OP_XPASS PFR_OP_ADDR_MAX 875 876struct pfr_astats { 877 struct pfr_addr pfras_a; 878 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 879 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 880 long pfras_tzero; 881}; 882 883enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX }; 884 885struct pfr_tstats { 886 struct pfr_table pfrts_t; 887 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 888 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 889 u_int64_t pfrts_match; 890 u_int64_t pfrts_nomatch; 891 long pfrts_tzero; 892 int pfrts_cnt; 893 int pfrts_refcnt[PFR_REFCNT_MAX]; 894}; 895#define pfrts_name pfrts_t.pfrt_name 896#define pfrts_flags pfrts_t.pfrt_flags 897 898#ifndef _SOCKADDR_UNION_DEFINED 899#define _SOCKADDR_UNION_DEFINED 900union sockaddr_union { 901 struct sockaddr sa; 902 struct sockaddr_in sin; 903 struct sockaddr_in6 sin6; 904}; 905#endif /* _SOCKADDR_UNION_DEFINED */ 906 907SLIST_HEAD(pfr_kentryworkq, pfr_kentry); 908struct pfr_kentry { 909 struct radix_node pfrke_node[2]; 910 union sockaddr_union pfrke_sa; 911 u_int64_t pfrke_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 912 u_int64_t pfrke_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 913 SLIST_ENTRY(pfr_kentry) pfrke_workq; 914 long pfrke_tzero; 915 u_int8_t pfrke_af; 916 u_int8_t pfrke_net; 917 u_int8_t pfrke_not; 918 u_int8_t pfrke_mark; 919 u_int8_t pfrke_intrpool; 920}; 921 922SLIST_HEAD(pfr_ktableworkq, pfr_ktable); 923RB_HEAD(pfr_ktablehead, pfr_ktable); 924struct pfr_ktable { 925 struct pfr_tstats pfrkt_ts; 926 RB_ENTRY(pfr_ktable) pfrkt_tree; 927 SLIST_ENTRY(pfr_ktable) pfrkt_workq; 928 struct radix_node_head *pfrkt_ip4; 929 struct radix_node_head *pfrkt_ip6; 930 struct pfr_ktable *pfrkt_shadow; 931 struct pfr_ktable *pfrkt_root; 932 struct pf_ruleset *pfrkt_rs; 933 long pfrkt_larg; 934 int pfrkt_nflags; 935}; 936#define pfrkt_t pfrkt_ts.pfrts_t 937#define pfrkt_name pfrkt_t.pfrt_name 938#define pfrkt_anchor pfrkt_t.pfrt_anchor 939#define pfrkt_ruleset pfrkt_t.pfrt_ruleset 940#define pfrkt_flags pfrkt_t.pfrt_flags 941#define pfrkt_cnt pfrkt_ts.pfrts_cnt 942#define pfrkt_refcnt pfrkt_ts.pfrts_refcnt 943#define pfrkt_packets pfrkt_ts.pfrts_packets 944#define pfrkt_bytes pfrkt_ts.pfrts_bytes 945#define pfrkt_match pfrkt_ts.pfrts_match 946#define pfrkt_nomatch pfrkt_ts.pfrts_nomatch 947#define pfrkt_tzero pfrkt_ts.pfrts_tzero 948 949RB_HEAD(pf_state_tree_lan_ext, pf_state); 950RB_PROTOTYPE(pf_state_tree_lan_ext, pf_state, 951 u.s.entry_lan_ext, pf_state_compare_lan_ext); 952 953RB_HEAD(pf_state_tree_ext_gwy, pf_state); 954RB_PROTOTYPE(pf_state_tree_ext_gwy, pf_state, 955 u.s.entry_ext_gwy, pf_state_compare_ext_gwy); 956 957struct pfi_if { 958 char pfif_name[IFNAMSIZ]; 959 u_int64_t pfif_packets[2][2][2]; 960 u_int64_t pfif_bytes[2][2][2]; 961 u_int64_t pfif_addcnt; 962 u_int64_t pfif_delcnt; 963 long pfif_tzero; 964 int pfif_states; 965 int pfif_rules; 966 int pfif_flags; 967}; 968 969TAILQ_HEAD(pfi_grouphead, pfi_kif); 970TAILQ_HEAD(pfi_statehead, pfi_kif); 971RB_HEAD(pfi_ifhead, pfi_kif); 972struct pfi_kif { 973 struct pfi_if pfik_if; 974 RB_ENTRY(pfi_kif) pfik_tree; 975 struct pf_state_tree_lan_ext pfik_lan_ext; 976 struct pf_state_tree_ext_gwy pfik_ext_gwy; 977 struct pfi_grouphead pfik_grouphead; 978 TAILQ_ENTRY(pfi_kif) pfik_instances; 979 TAILQ_ENTRY(pfi_kif) pfik_w_states; 980 struct hook_desc_head *pfik_ah_head; 981 void *pfik_ah_cookie; 982 struct pfi_kif *pfik_parent; 983 struct ifnet *pfik_ifp; 984 int pfik_states; 985 int pfik_rules; 986}; 987#define pfik_name pfik_if.pfif_name 988#define pfik_packets pfik_if.pfif_packets 989#define pfik_bytes pfik_if.pfif_bytes 990#define pfik_tzero pfik_if.pfif_tzero 991#define pfik_flags pfik_if.pfif_flags 992#define pfik_addcnt pfik_if.pfif_addcnt 993#define pfik_delcnt pfik_if.pfif_delcnt 994#define pfik_states pfik_if.pfif_states 995#define pfik_rules pfik_if.pfif_rules 996 997#define PFI_IFLAG_GROUP 0x0001 /* group of interfaces */ 998#define PFI_IFLAG_INSTANCE 0x0002 /* single instance */ 999#define PFI_IFLAG_CLONABLE 0x0010 /* clonable group */ 1000#define PFI_IFLAG_DYNAMIC 0x0020 /* dynamic group */ 1001#define PFI_IFLAG_ATTACHED 0x0040 /* interface attached */ 1002#define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */ 1003#define PFI_IFLAG_SETABLE_MASK 0x0100 /* setable via DIOC{SET,CLR}IFFLAG */ 1004#define PFI_IFLAG_PLACEHOLDER 0x8000 /* placeholder group/interface */ 1005 1006struct pf_pdesc { 1007 u_int64_t tot_len; /* Make Mickey money */ 1008 union { 1009 struct tcphdr *tcp; 1010 struct udphdr *udp; 1011 struct icmp *icmp; 1012#ifdef INET6 1013 struct icmp6_hdr *icmp6; 1014#endif /* INET6 */ 1015 void *any; 1016 } hdr; 1017 struct pf_addr baddr; /* address before translation */ 1018 struct pf_addr naddr; /* address after translation */ 1019 struct pf_rule *nat_rule; /* nat/rdr rule applied to packet */ 1020 struct pf_addr *src; 1021 struct pf_addr *dst; 1022 struct ether_header 1023 *eh; 1024 u_int16_t *ip_sum; 1025 u_int32_t p_len; /* total length of payload */ 1026 u_int16_t flags; /* Let SCRUB trigger behavior in 1027 * state code. Easier than tags */ 1028#define PFDESC_TCP_NORM 0x0001 /* TCP shall be statefully scrubbed */ 1029#define PFDESC_IP_REAS 0x0002 /* IP frags would've been reassembled */ 1030 sa_family_t af; 1031 u_int8_t proto; 1032 u_int8_t tos; 1033}; 1034 1035/* flags for RDR options */ 1036#define PF_DPORT_RANGE 0x01 /* Dest port uses range */ 1037#define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */ 1038 1039/* Reasons code for passing/dropping a packet */ 1040#define PFRES_MATCH 0 /* Explicit match of a rule */ 1041#define PFRES_BADOFF 1 /* Bad offset for pull_hdr */ 1042#define PFRES_FRAG 2 /* Dropping following fragment */ 1043#define PFRES_SHORT 3 /* Dropping short packet */ 1044#define PFRES_NORM 4 /* Dropping by normalizer */ 1045#define PFRES_MEMORY 5 /* Dropped due to lacking mem */ 1046#define PFRES_TS 6 /* Bad TCP Timestamp (RFC1323) */ 1047#define PFRES_CONGEST 7 /* Congestion (of ipintrq) */ 1048#define PFRES_IPOPTIONS 8 /* IP option */ 1049#define PFRES_PROTCKSUM 9 /* Protocol checksum invalid */ 1050#define PFRES_BADSTATE 10 /* State mismatch */ 1051#define PFRES_STATEINS 11 /* State insertion failure */ 1052#define PFRES_MAXSTATES 12 /* State limit */ 1053#define PFRES_SRCLIMIT 13 /* Source node/conn limit */ 1054#define PFRES_SYNPROXY 14 /* SYN proxy */ 1055#define PFRES_MAX 15 /* total+1 */ 1056 1057#define PFRES_NAMES { \ 1058 "match", \ 1059 "bad-offset", \ 1060 "fragment", \ 1061 "short", \ 1062 "normalize", \ 1063 "memory", \ 1064 "bad-timestamp", \ 1065 "congestion", \ 1066 "ip-option", \ 1067 "proto-cksum", \ 1068 "state-mismatch", \ 1069 "state-insert", \ 1070 "state-limit", \ 1071 "src-limit", \ 1072 "synproxy", \ 1073 NULL \ 1074} 1075 1076/* Counters for other things we want to keep track of */ 1077#define LCNT_STATES 0 /* states */ 1078#define LCNT_SRCSTATES 1 /* max-src-states */ 1079#define LCNT_SRCNODES 2 /* max-src-nodes */ 1080#define LCNT_SRCCONN 3 /* max-src-conn */ 1081#define LCNT_SRCCONNRATE 4 /* max-src-conn-rate */ 1082#define LCNT_OVERLOAD_TABLE 5 /* entry added to overload table */ 1083#define LCNT_OVERLOAD_FLUSH 6 /* state entries flushed */ 1084#define LCNT_MAX 7 /* total+1 */ 1085 1086#define LCNT_NAMES { \ 1087 "max states per rule", \ 1088 "max-src-states", \ 1089 "max-src-nodes", \ 1090 "max-src-conn", \ 1091 "max-src-conn-rate", \ 1092 "overload table insertion", \ 1093 "overload flush states", \ 1094 NULL \ 1095} 1096 1097/* UDP state enumeration */ 1098#define PFUDPS_NO_TRAFFIC 0 1099#define PFUDPS_SINGLE 1 1100#define PFUDPS_MULTIPLE 2 1101 1102#define PFUDPS_NSTATES 3 /* number of state levels */ 1103 1104#define PFUDPS_NAMES { \ 1105 "NO_TRAFFIC", \ 1106 "SINGLE", \ 1107 "MULTIPLE", \ 1108 NULL \ 1109} 1110 1111/* Other protocol state enumeration */ 1112#define PFOTHERS_NO_TRAFFIC 0 1113#define PFOTHERS_SINGLE 1 1114#define PFOTHERS_MULTIPLE 2 1115 1116#define PFOTHERS_NSTATES 3 /* number of state levels */ 1117 1118#define PFOTHERS_NAMES { \ 1119 "NO_TRAFFIC", \ 1120 "SINGLE", \ 1121 "MULTIPLE", \ 1122 NULL \ 1123} 1124 1125#define FCNT_STATE_SEARCH 0 1126#define FCNT_STATE_INSERT 1 1127#define FCNT_STATE_REMOVALS 2 1128#define FCNT_MAX 3 1129 1130#define SCNT_SRC_NODE_SEARCH 0 1131#define SCNT_SRC_NODE_INSERT 1 1132#define SCNT_SRC_NODE_REMOVALS 2 1133#define SCNT_MAX 3 1134 1135#define ACTION_SET(a, x) \ 1136 do { \ 1137 if ((a) != NULL) \ 1138 *(a) = (x); \ 1139 } while (0) 1140 1141#define REASON_SET(a, x) \ 1142 do { \ 1143 if ((a) != NULL) \ 1144 *(a) = (x); \ 1145 if (x < PFRES_MAX) \ 1146 pf_status.counters[x]++; \ 1147 } while (0) 1148 1149struct pf_status { 1150 u_int64_t counters[PFRES_MAX]; 1151 u_int64_t lcounters[LCNT_MAX]; /* limit counters */ 1152 u_int64_t fcounters[FCNT_MAX]; 1153 u_int64_t scounters[SCNT_MAX]; 1154 u_int64_t pcounters[2][2][3]; 1155 u_int64_t bcounters[2][2]; 1156 u_int64_t stateid; 1157 u_int32_t running; 1158 u_int32_t states; 1159 u_int32_t src_nodes; 1160 u_int32_t since; 1161 u_int32_t debug; 1162 u_int32_t hostid; 1163 char ifname[IFNAMSIZ]; 1164}; 1165 1166struct cbq_opts { 1167 u_int minburst; 1168 u_int maxburst; 1169 u_int pktsize; 1170 u_int maxpktsize; 1171 u_int ns_per_byte; 1172 u_int maxidle; 1173 int minidle; 1174 u_int offtime; 1175 int flags; 1176}; 1177 1178struct priq_opts { 1179 int flags; 1180}; 1181 1182struct hfsc_opts { 1183 /* real-time service curve */ 1184 u_int rtsc_m1; /* slope of the 1st segment in bps */ 1185 u_int rtsc_d; /* the x-projection of m1 in msec */ 1186 u_int rtsc_m2; /* slope of the 2nd segment in bps */ 1187 /* link-sharing service curve */ 1188 u_int lssc_m1; 1189 u_int lssc_d; 1190 u_int lssc_m2; 1191 /* upper-limit service curve */ 1192 u_int ulsc_m1; 1193 u_int ulsc_d; 1194 u_int ulsc_m2; 1195 int flags; 1196}; 1197 1198struct pf_altq { 1199 char ifname[IFNAMSIZ]; 1200 1201 void *altq_disc; /* discipline-specific state */ 1202 TAILQ_ENTRY(pf_altq) entries; 1203 1204 /* scheduler spec */ 1205 u_int8_t scheduler; /* scheduler type */ 1206 u_int16_t tbrsize; /* tokenbucket regulator size */ 1207 u_int32_t ifbandwidth; /* interface bandwidth */ 1208 1209 /* queue spec */ 1210 char qname[PF_QNAME_SIZE]; /* queue name */ 1211 char parent[PF_QNAME_SIZE]; /* parent name */ 1212 u_int32_t parent_qid; /* parent queue id */ 1213 u_int32_t bandwidth; /* queue bandwidth */ 1214 u_int8_t priority; /* priority */ 1215 u_int16_t qlimit; /* queue size limit */ 1216 u_int16_t flags; /* misc flags */ 1217 union { 1218 struct cbq_opts cbq_opts; 1219 struct priq_opts priq_opts; 1220 struct hfsc_opts hfsc_opts; 1221 } pq_u; 1222 1223 u_int32_t qid; /* return value */ 1224}; 1225 1226struct pf_tag { 1227 u_int16_t tag; /* tag id */ 1228}; 1229 1230struct pf_tagname { 1231 TAILQ_ENTRY(pf_tagname) entries; 1232 char name[PF_TAG_NAME_SIZE]; 1233 u_int16_t tag; 1234 int ref; 1235}; 1236 1237#define PFFRAG_FRENT_HIWAT 5000 /* Number of fragment entries */ 1238#define PFFRAG_FRAG_HIWAT 1000 /* Number of fragmented packets */ 1239#define PFFRAG_FRCENT_HIWAT 50000 /* Number of fragment cache entries */ 1240#define PFFRAG_FRCACHE_HIWAT 10000 /* Number of fragment descriptors */ 1241 1242/* 1243 * ioctl parameter structures 1244 */ 1245 1246struct pfioc_pooladdr { 1247 u_int32_t action; 1248 u_int32_t ticket; 1249 u_int32_t nr; 1250 u_int32_t r_num; 1251 u_int8_t r_action; 1252 u_int8_t r_last; 1253 u_int8_t af; 1254 char anchor[MAXPATHLEN]; 1255 struct pf_pooladdr addr; 1256}; 1257 1258struct pfioc_rule { 1259 u_int32_t action; 1260 u_int32_t ticket; 1261 u_int32_t pool_ticket; 1262 u_int32_t nr; 1263 char anchor[MAXPATHLEN]; 1264 char anchor_call[MAXPATHLEN]; 1265 struct pf_rule rule; 1266}; 1267 1268struct pfioc_natlook { 1269 struct pf_addr saddr; 1270 struct pf_addr daddr; 1271 struct pf_addr rsaddr; 1272 struct pf_addr rdaddr; 1273 u_int16_t sport; 1274 u_int16_t dport; 1275 u_int16_t rsport; 1276 u_int16_t rdport; 1277 sa_family_t af; 1278 u_int8_t proto; 1279 u_int8_t direction; 1280}; 1281 1282struct pfioc_state { 1283 u_int32_t nr; 1284 struct pf_state state; 1285}; 1286 1287struct pfioc_state_kill { 1288 /* XXX returns the number of states killed in psk_af */ 1289 sa_family_t psk_af; 1290 int psk_proto; 1291 struct pf_rule_addr psk_src; 1292 struct pf_rule_addr psk_dst; 1293 char psk_ifname[IFNAMSIZ]; 1294}; 1295 1296struct pfioc_states { 1297 int ps_len; 1298 union { 1299 caddr_t psu_buf; 1300 struct pf_state *psu_states; 1301 } ps_u; 1302#define ps_buf ps_u.psu_buf 1303#define ps_states ps_u.psu_states 1304}; 1305 1306struct pfioc_src_nodes { 1307 int psn_len; 1308 union { 1309 caddr_t psu_buf; 1310 struct pf_src_node *psu_src_nodes; 1311 } psn_u; 1312#define psn_buf psn_u.psu_buf 1313#define psn_src_nodes psn_u.psu_src_nodes 1314}; 1315 1316struct pfioc_if { 1317 char ifname[IFNAMSIZ]; 1318}; 1319 1320struct pfioc_tm { 1321 int timeout; 1322 int seconds; 1323}; 1324 1325struct pfioc_limit { 1326 int index; 1327 unsigned limit; 1328}; 1329 1330struct pfioc_altq { 1331 u_int32_t action; 1332 u_int32_t ticket; 1333 u_int32_t nr; 1334 struct pf_altq altq; 1335}; 1336 1337struct pfioc_qstats { 1338 u_int32_t ticket; 1339 u_int32_t nr; 1340 void *buf; 1341 int nbytes; 1342 u_int8_t scheduler; 1343}; 1344 1345struct pfioc_ruleset { 1346 u_int32_t nr; 1347 char path[MAXPATHLEN]; 1348 char name[PF_ANCHOR_NAME_SIZE]; 1349}; 1350 1351#define PF_RULESET_ALTQ (PF_RULESET_MAX) 1352#define PF_RULESET_TABLE (PF_RULESET_MAX+1) 1353struct pfioc_trans { 1354 int size; /* number of elements */ 1355 int esize; /* size of each element in bytes */ 1356 struct pfioc_trans_e { 1357 int rs_num; 1358 char anchor[MAXPATHLEN]; 1359 u_int32_t ticket; 1360 } *array; 1361}; 1362 1363#define PFR_FLAG_ATOMIC 0x00000001 1364#define PFR_FLAG_DUMMY 0x00000002 1365#define PFR_FLAG_FEEDBACK 0x00000004 1366#define PFR_FLAG_CLSTATS 0x00000008 1367#define PFR_FLAG_ADDRSTOO 0x00000010 1368#define PFR_FLAG_REPLACE 0x00000020 1369#define PFR_FLAG_ALLRSETS 0x00000040 1370#define PFR_FLAG_ALLMASK 0x0000007F 1371#ifdef _KERNEL 1372#define PFR_FLAG_USERIOCTL 0x10000000 1373#endif 1374 1375struct pfioc_table { 1376 struct pfr_table pfrio_table; 1377 void *pfrio_buffer; 1378 int pfrio_esize; 1379 int pfrio_size; 1380 int pfrio_size2; 1381 int pfrio_nadd; 1382 int pfrio_ndel; 1383 int pfrio_nchange; 1384 int pfrio_flags; 1385 u_int32_t pfrio_ticket; 1386}; 1387#define pfrio_exists pfrio_nadd 1388#define pfrio_nzero pfrio_nadd 1389#define pfrio_nmatch pfrio_nadd 1390#define pfrio_naddr pfrio_size2 1391#define pfrio_setflag pfrio_size2 1392#define pfrio_clrflag pfrio_nadd 1393 1394 1395#define PFI_FLAG_GROUP 0x0001 /* gets groups of interfaces */ 1396#define PFI_FLAG_INSTANCE 0x0002 /* gets single interfaces */ 1397#define PFI_FLAG_ALLMASK 0x0003 1398 1399struct pfioc_iface { 1400 char pfiio_name[IFNAMSIZ]; 1401 void *pfiio_buffer; 1402 int pfiio_esize; 1403 int pfiio_size; 1404 int pfiio_nzero; 1405 int pfiio_flags; 1406}; 1407 1408 1409/* 1410 * ioctl operations 1411 */ 1412 1413#define DIOCSTART _IO ('D', 1) 1414#define DIOCSTOP _IO ('D', 2) 1415#define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule) 1416#define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule) 1417#define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule) 1418/* XXX cut 8 - 17 */ 1419#define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill) 1420#define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state) 1421#define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_if) 1422#define DIOCGETSTATUS _IOWR('D', 21, struct pf_status) 1423#define DIOCCLRSTATUS _IO ('D', 22) 1424#define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook) 1425#define DIOCSETDEBUG _IOWR('D', 24, u_int32_t) 1426#define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states) 1427#define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule) 1428/* XXX cut 26 - 28 */ 1429#define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm) 1430#define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm) 1431#define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state) 1432#define DIOCCLRRULECTRS _IO ('D', 38) 1433#define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit) 1434#define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit) 1435#define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill) 1436#define DIOCSTARTALTQ _IO ('D', 42) 1437#define DIOCSTOPALTQ _IO ('D', 43) 1438#define DIOCADDALTQ _IOWR('D', 45, struct pfioc_altq) 1439#define DIOCGETALTQS _IOWR('D', 47, struct pfioc_altq) 1440#define DIOCGETALTQ _IOWR('D', 48, struct pfioc_altq) 1441#define DIOCCHANGEALTQ _IOWR('D', 49, struct pfioc_altq) 1442#define DIOCGETQSTATS _IOWR('D', 50, struct pfioc_qstats) 1443#define DIOCBEGINADDRS _IOWR('D', 51, struct pfioc_pooladdr) 1444#define DIOCADDADDR _IOWR('D', 52, struct pfioc_pooladdr) 1445#define DIOCGETADDRS _IOWR('D', 53, struct pfioc_pooladdr) 1446#define DIOCGETADDR _IOWR('D', 54, struct pfioc_pooladdr) 1447#define DIOCCHANGEADDR _IOWR('D', 55, struct pfioc_pooladdr) 1448/* XXX cut 55 - 57 */ 1449#define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset) 1450#define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset) 1451#define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table) 1452#define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table) 1453#define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table) 1454#define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table) 1455#define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table) 1456#define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table) 1457#define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table) 1458#define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table) 1459#define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table) 1460#define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table) 1461#define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table) 1462#define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table) 1463#define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table) 1464#define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table) 1465#define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table) 1466#define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table) 1467#define DIOCOSFPFLUSH _IO('D', 78) 1468#define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl) 1469#define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl) 1470#define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans) 1471#define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans) 1472#define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans) 1473#define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes) 1474#define DIOCCLRSRCNODES _IO('D', 85) 1475#define DIOCSETHOSTID _IOWR('D', 86, u_int32_t) 1476#define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface) 1477#define DIOCICLRISTATS _IOWR('D', 88, struct pfioc_iface) 1478#define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface) 1479#define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface) 1480#ifdef __FreeBSD__ 1481struct pf_ifspeed { 1482 char ifname[IFNAMSIZ]; 1483 u_int32_t baudrate; 1484}; 1485#define DIOCGIFSPEED _IOWR('D', 91, struct pf_ifspeed) 1486#endif 1487 1488#ifdef _KERNEL 1489RB_HEAD(pf_src_tree, pf_src_node); 1490RB_PROTOTYPE(pf_src_tree, pf_src_node, entry, pf_src_compare); 1491extern struct pf_src_tree tree_src_tracking; 1492 1493RB_HEAD(pf_state_tree_id, pf_state); 1494RB_PROTOTYPE(pf_state_tree_id, pf_state, 1495 entry_id, pf_state_compare_id); 1496extern struct pf_state_tree_id tree_id; 1497extern struct pf_state_queue state_updates; 1498 1499extern struct pf_anchor_global pf_anchors; 1500extern struct pf_ruleset pf_main_ruleset; 1501TAILQ_HEAD(pf_poolqueue, pf_pool); 1502extern struct pf_poolqueue pf_pools[2]; 1503TAILQ_HEAD(pf_altqqueue, pf_altq); 1504extern struct pf_altqqueue pf_altqs[2]; 1505extern struct pf_palist pf_pabuf; 1506extern struct pfi_kif **pfi_index2kif; 1507 1508extern u_int32_t ticket_altqs_active; 1509extern u_int32_t ticket_altqs_inactive; 1510extern int altqs_inactive_open; 1511extern u_int32_t ticket_pabuf; 1512extern struct pf_altqqueue *pf_altqs_active; 1513extern struct pf_altqqueue *pf_altqs_inactive; 1514extern struct pf_poolqueue *pf_pools_active; 1515extern struct pf_poolqueue *pf_pools_inactive; 1516extern int pf_tbladdr_setup(struct pf_ruleset *, 1517 struct pf_addr_wrap *); 1518extern void pf_tbladdr_remove(struct pf_addr_wrap *); 1519extern void pf_tbladdr_copyout(struct pf_addr_wrap *); 1520extern void pf_calc_skip_steps(struct pf_rulequeue *); 1521#ifdef __FreeBSD__ 1522extern uma_zone_t pf_src_tree_pl, pf_rule_pl; 1523extern uma_zone_t pf_state_pl, pf_altq_pl, pf_pooladdr_pl; 1524extern uma_zone_t pfr_ktable_pl, pfr_kentry_pl, pfr_kentry_pl2; 1525extern uma_zone_t pf_cache_pl, pf_cent_pl; 1526extern uma_zone_t pf_state_scrub_pl; 1527extern uma_zone_t pfi_addr_pl; 1528#else 1529extern struct pool pf_src_tree_pl, pf_rule_pl; 1530extern struct pool pf_state_pl, pf_altq_pl, pf_pooladdr_pl; 1531extern struct pool pf_state_scrub_pl; 1532#endif 1533extern void pf_purge_timeout(void *); 1534extern void pf_purge_expired_src_nodes(void); 1535extern void pf_purge_expired_states(void); 1536extern void pf_purge_expired_state(struct pf_state *); 1537extern int pf_insert_state(struct pfi_kif *, 1538 struct pf_state *); 1539extern int pf_insert_src_node(struct pf_src_node **, 1540 struct pf_rule *, struct pf_addr *, 1541 sa_family_t); 1542void pf_src_tree_remove_state(struct pf_state *); 1543extern struct pf_state *pf_find_state_byid(struct pf_state *); 1544extern struct pf_state *pf_find_state_all(struct pf_state *key, 1545 u_int8_t tree, int *more); 1546extern void pf_print_state(struct pf_state *); 1547extern void pf_print_flags(u_int8_t); 1548extern struct pf_anchor *pf_find_anchor(const char *); 1549extern struct pf_ruleset *pf_find_ruleset(const char *); 1550extern struct pf_ruleset *pf_find_or_create_ruleset(const char *); 1551extern void pf_remove_if_empty_ruleset( 1552 struct pf_ruleset *); 1553extern u_int16_t pf_cksum_fixup(u_int16_t, u_int16_t, u_int16_t, 1554 u_int8_t); 1555 1556extern struct ifnet *sync_ifp; 1557extern struct pf_rule pf_default_rule; 1558extern void pf_addrcpy(struct pf_addr *, struct pf_addr *, 1559 u_int8_t); 1560void pf_rm_rule(struct pf_rulequeue *, 1561 struct pf_rule *); 1562 1563#ifdef INET 1564#ifdef __FreeBSD__ 1565int pf_test(int, struct ifnet *, struct mbuf **, struct ether_header *, 1566 struct inpcb *); 1567#else 1568int pf_test(int, struct ifnet *, struct mbuf **, struct ether_header *); 1569#endif 1570#endif /* INET */ 1571 1572#ifdef INET6 1573#ifdef __FreeBSD__ 1574int pf_test6(int, struct ifnet *, struct mbuf **, struct ether_header *, 1575 struct inpcb *); 1576#else 1577int pf_test6(int, struct ifnet *, struct mbuf **, struct ether_header *); 1578#endif 1579void pf_poolmask(struct pf_addr *, struct pf_addr*, 1580 struct pf_addr *, struct pf_addr *, u_int8_t); 1581void pf_addr_inc(struct pf_addr *, sa_family_t); 1582#endif /* INET6 */ 1583 1584void *pf_pull_hdr(struct mbuf *, int, void *, int, u_short *, u_short *, 1585 sa_family_t); 1586void pf_change_a(void *, u_int16_t *, u_int32_t, u_int8_t); 1587int pflog_packet(struct pfi_kif *, struct mbuf *, sa_family_t, u_int8_t, 1588 u_int8_t, struct pf_rule *, struct pf_rule *, struct pf_ruleset *); 1589int pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *, 1590 struct pf_addr *, sa_family_t); 1591int pf_match(u_int8_t, u_int32_t, u_int32_t, u_int32_t); 1592int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t); 1593int pf_match_uid(u_int8_t, uid_t, uid_t, uid_t); 1594int pf_match_gid(u_int8_t, gid_t, gid_t, gid_t); 1595 1596void pf_normalize_init(void); 1597int pf_normalize_ip(struct mbuf **, int, struct pfi_kif *, u_short *, 1598 struct pf_pdesc *); 1599int pf_normalize_ip6(struct mbuf **, int, struct pfi_kif *, u_short *, 1600 struct pf_pdesc *); 1601int pf_normalize_tcp(int, struct pfi_kif *, struct mbuf *, int, int, void *, 1602 struct pf_pdesc *); 1603void pf_normalize_tcp_cleanup(struct pf_state *); 1604int pf_normalize_tcp_init(struct mbuf *, int, struct pf_pdesc *, 1605 struct tcphdr *, struct pf_state_peer *, struct pf_state_peer *); 1606int pf_normalize_tcp_stateful(struct mbuf *, int, struct pf_pdesc *, 1607 u_short *, struct tcphdr *, struct pf_state *, 1608 struct pf_state_peer *, struct pf_state_peer *, int *); 1609u_int32_t 1610 pf_state_expires(const struct pf_state *); 1611void pf_purge_expired_fragments(void); 1612int pf_routable(struct pf_addr *addr, sa_family_t af); 1613int pf_rtlabel_match(struct pf_addr *, sa_family_t, struct pf_addr_wrap *); 1614void pfr_initialize(void); 1615int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t); 1616void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, sa_family_t, 1617 u_int64_t, int, int, int); 1618int pfr_pool_get(struct pfr_ktable *, int *, struct pf_addr *, 1619 struct pf_addr **, struct pf_addr **, sa_family_t); 1620void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *); 1621struct pfr_ktable * 1622 pfr_attach_table(struct pf_ruleset *, char *); 1623void pfr_detach_table(struct pfr_ktable *); 1624int pfr_clr_tables(struct pfr_table *, int *, int); 1625int pfr_add_tables(struct pfr_table *, int, int *, int); 1626int pfr_del_tables(struct pfr_table *, int, int *, int); 1627int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int); 1628int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int); 1629int pfr_clr_tstats(struct pfr_table *, int, int *, int); 1630int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int); 1631int pfr_clr_addrs(struct pfr_table *, int *, int); 1632int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *, long); 1633int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1634 int); 1635int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1636 int); 1637int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1638 int *, int *, int *, int); 1639int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int); 1640int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int); 1641int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *, 1642 int); 1643int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1644 int); 1645int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int); 1646int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int); 1647int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int); 1648int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *, 1649 int *, u_int32_t, int); 1650 1651void pfi_initialize(void); 1652#ifdef __FreeBSD__ 1653void pfi_cleanup(void); 1654#endif 1655void pfi_attach_clone(struct if_clone *); 1656void pfi_attach_ifnet(struct ifnet *); 1657void pfi_detach_ifnet(struct ifnet *); 1658struct pfi_kif *pfi_lookup_create(const char *); 1659struct pfi_kif *pfi_lookup_if(const char *); 1660int pfi_maybe_destroy(struct pfi_kif *); 1661struct pfi_kif *pfi_attach_rule(const char *); 1662void pfi_detach_rule(struct pfi_kif *); 1663void pfi_attach_state(struct pfi_kif *); 1664void pfi_detach_state(struct pfi_kif *); 1665int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t); 1666void pfi_dynaddr_copyout(struct pf_addr_wrap *); 1667void pfi_dynaddr_remove(struct pf_addr_wrap *); 1668void pfi_fill_oldstatus(struct pf_status *); 1669int pfi_clr_istats(const char *, int *, int); 1670int pfi_get_ifaces(const char *, struct pfi_if *, int *, int); 1671int pfi_set_flags(const char *, int); 1672int pfi_clear_flags(const char *, int); 1673int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *, 1674 sa_family_t); 1675 1676extern struct pfi_statehead pfi_statehead; 1677 1678u_int16_t pf_tagname2tag(char *); 1679void pf_tag2tagname(u_int16_t, char *); 1680void pf_tag_ref(u_int16_t); 1681void pf_tag_unref(u_int16_t); 1682int pf_tag_packet(struct mbuf *, struct pf_tag *, int); 1683u_int32_t pf_qname2qid(char *); 1684void pf_qid2qname(u_int32_t, char *); 1685void pf_qid_unref(u_int32_t); 1686 1687extern struct pf_status pf_status; 1688 1689#ifdef __FreeBSD__ 1690extern uma_zone_t pf_frent_pl, pf_frag_pl; 1691#else 1692extern struct pool pf_frent_pl, pf_frag_pl; 1693#endif 1694 1695struct pf_pool_limit { 1696 void *pp; 1697 unsigned limit; 1698}; 1699extern struct pf_pool_limit pf_pool_limits[PF_LIMIT_MAX]; 1700 1701#ifdef __FreeBSD__ 1702struct pf_frent { 1703 LIST_ENTRY(pf_frent) fr_next; 1704 struct ip *fr_ip; 1705 struct mbuf *fr_m; 1706}; 1707 1708struct pf_frcache { 1709 LIST_ENTRY(pf_frcache) fr_next; 1710 uint16_t fr_off; 1711 uint16_t fr_end; 1712}; 1713 1714struct pf_fragment { 1715 RB_ENTRY(pf_fragment) fr_entry; 1716 TAILQ_ENTRY(pf_fragment) frag_next; 1717 struct in_addr fr_src; 1718 struct in_addr fr_dst; 1719 u_int8_t fr_p; /* protocol of this fragment */ 1720 u_int8_t fr_flags; /* status flags */ 1721 u_int16_t fr_id; /* fragment id for reassemble */ 1722 u_int16_t fr_max; /* fragment data max */ 1723 u_int32_t fr_timeout; 1724#define fr_queue fr_u.fru_queue 1725#define fr_cache fr_u.fru_cache 1726 union { 1727 LIST_HEAD(pf_fragq, pf_frent) fru_queue; /* buffering */ 1728 LIST_HEAD(pf_cacheq, pf_frcache) fru_cache; /* non-buf */ 1729 } fr_u; 1730}; 1731#endif /* (__FreeBSD__) */ 1732 1733#endif /* _KERNEL */ 1734 1735/* The fingerprint functions can be linked into userland programs (tcpdump) */ 1736int pf_osfp_add(struct pf_osfp_ioctl *); 1737#ifdef _KERNEL 1738struct pf_osfp_enlist * 1739 pf_osfp_fingerprint(struct pf_pdesc *, struct mbuf *, int, 1740 const struct tcphdr *); 1741#endif /* _KERNEL */ 1742struct pf_osfp_enlist * 1743 pf_osfp_fingerprint_hdr(const struct ip *, const struct tcphdr *); 1744void pf_osfp_flush(void); 1745int pf_osfp_get(struct pf_osfp_ioctl *); 1746#ifdef __FreeBSD__ 1747int pf_osfp_initialize(void); 1748void pf_osfp_cleanup(void); 1749#else 1750void pf_osfp_initialize(void); 1751#endif 1752int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t); 1753struct pf_os_fingerprint * 1754 pf_osfp_validate(void); 1755 1756 1757#endif /* _NET_PFVAR_H_ */ 1758