1 /* $OpenBSD: pfvar.h,v 1.438 2016/09/03 17:11:40 sashan Exp $ */ 2 3 /* 4 * Copyright (c) 2001 Daniel Hartmeier 5 * Copyright (c) 2002 - 2013 Henning Brauer <henning@openbsd.org> 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * - Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * - Redistributions in binary form must reproduce the above 15 * copyright notice, this list of conditions and the following 16 * disclaimer in the documentation and/or other materials provided 17 * with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 22 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 23 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 25 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 26 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 27 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 29 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 * 32 */ 33 34 #ifndef _NET_PFVAR_H_ 35 #define _NET_PFVAR_H_ 36 37 #include <sys/queue.h> 38 #include <sys/tree.h> 39 #include <sys/rwlock.h> 40 #include <sys/syslimits.h> 41 #include <sys/refcnt.h> 42 43 #include <netinet/in.h> 44 45 #include <net/radix.h> 46 #include <net/route.h> 47 48 struct ip; 49 struct ip6_hdr; 50 51 #define PF_TCPS_PROXY_SRC ((TCP_NSTATES)+0) 52 #define PF_TCPS_PROXY_DST ((TCP_NSTATES)+1) 53 54 #define PF_MD5_DIGEST_LENGTH 16 55 #ifdef MD5_DIGEST_LENGTH 56 #if PF_MD5_DIGEST_LENGTH != MD5_DIGEST_LENGTH 57 #error md5 digest length mismatch 58 #endif 59 #endif 60 61 typedef struct refcnt pf_refcnt_t; 62 #define PF_REF_INIT(_x) refcnt_init(&(_x)) 63 #define PF_REF_TAKE(_x) refcnt_take(&(_x)) 64 #define PF_REF_RELE(_x) refcnt_rele(&(_x)) 65 66 enum { PF_INOUT, PF_IN, PF_OUT, PF_FWD }; 67 enum { PF_PASS, PF_DROP, PF_SCRUB, PF_NOSCRUB, PF_NAT, PF_NONAT, 68 PF_BINAT, PF_NOBINAT, PF_RDR, PF_NORDR, PF_SYNPROXY_DROP, PF_DEFER, 69 PF_MATCH, PF_DIVERT, PF_RT, PF_AFRT }; 70 enum { PF_TRANS_RULESET, PF_TRANS_ALTQ, PF_TRANS_TABLE }; 71 enum { 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 }; 73 enum { PF_CHANGE_NONE, PF_CHANGE_ADD_HEAD, PF_CHANGE_ADD_TAIL, 74 PF_CHANGE_ADD_BEFORE, PF_CHANGE_ADD_AFTER, 75 PF_CHANGE_REMOVE, PF_CHANGE_GET_TICKET }; 76 enum { PF_GET_NONE, PF_GET_CLR_CNTR }; 77 enum { PF_SK_WIRE, PF_SK_STACK, PF_SK_BOTH }; 78 79 /* 80 * Note about PFTM_*: real indices into pf_rule.timeout[] come before 81 * PFTM_MAX, special cases afterwards. See pf_state_expires(). 82 */ 83 enum { PFTM_TCP_FIRST_PACKET, PFTM_TCP_OPENING, PFTM_TCP_ESTABLISHED, 84 PFTM_TCP_CLOSING, PFTM_TCP_FIN_WAIT, PFTM_TCP_CLOSED, 85 PFTM_UDP_FIRST_PACKET, PFTM_UDP_SINGLE, PFTM_UDP_MULTIPLE, 86 PFTM_ICMP_FIRST_PACKET, PFTM_ICMP_ERROR_REPLY, 87 PFTM_OTHER_FIRST_PACKET, PFTM_OTHER_SINGLE, 88 PFTM_OTHER_MULTIPLE, PFTM_FRAG, PFTM_INTERVAL, 89 PFTM_ADAPTIVE_START, PFTM_ADAPTIVE_END, PFTM_SRC_NODE, 90 PFTM_TS_DIFF, PFTM_MAX, PFTM_PURGE, PFTM_UNLINKED }; 91 92 /* PFTM default values */ 93 #define PFTM_TCP_FIRST_PACKET_VAL 120 /* First TCP packet */ 94 #define PFTM_TCP_OPENING_VAL 30 /* No response yet */ 95 #define PFTM_TCP_ESTABLISHED_VAL 24*60*60/* Established */ 96 #define PFTM_TCP_CLOSING_VAL 15 * 60 /* Half closed */ 97 #define PFTM_TCP_FIN_WAIT_VAL 45 /* Got both FINs */ 98 #define PFTM_TCP_CLOSED_VAL 90 /* Got a RST */ 99 #define PFTM_UDP_FIRST_PACKET_VAL 60 /* First UDP packet */ 100 #define PFTM_UDP_SINGLE_VAL 30 /* Unidirectional */ 101 #define PFTM_UDP_MULTIPLE_VAL 60 /* Bidirectional */ 102 #define PFTM_ICMP_FIRST_PACKET_VAL 20 /* First ICMP packet */ 103 #define PFTM_ICMP_ERROR_REPLY_VAL 10 /* Got error response */ 104 #define PFTM_OTHER_FIRST_PACKET_VAL 60 /* First packet */ 105 #define PFTM_OTHER_SINGLE_VAL 30 /* Unidirectional */ 106 #define PFTM_OTHER_MULTIPLE_VAL 60 /* Bidirectional */ 107 #define PFTM_FRAG_VAL 60 /* Fragment expire */ 108 #define PFTM_INTERVAL_VAL 10 /* Expire interval */ 109 #define PFTM_SRC_NODE_VAL 0 /* Source tracking */ 110 #define PFTM_TS_DIFF_VAL 30 /* Allowed TS diff */ 111 112 enum { PF_NOPFROUTE, PF_ROUTETO, PF_DUPTO, PF_REPLYTO }; 113 enum { PF_LIMIT_STATES, PF_LIMIT_SRC_NODES, PF_LIMIT_FRAGS, 114 PF_LIMIT_TABLES, PF_LIMIT_TABLE_ENTRIES, PF_LIMIT_MAX }; 115 #define PF_POOL_IDMASK 0x0f 116 enum { PF_POOL_NONE, PF_POOL_BITMASK, PF_POOL_RANDOM, 117 PF_POOL_SRCHASH, PF_POOL_ROUNDROBIN, PF_POOL_LEASTSTATES }; 118 enum { PF_ADDR_ADDRMASK, PF_ADDR_NOROUTE, PF_ADDR_DYNIFTL, 119 PF_ADDR_TABLE, PF_ADDR_RTLABEL, PF_ADDR_URPFFAILED, 120 PF_ADDR_RANGE, PF_ADDR_NONE }; 121 #define PF_POOL_TYPEMASK 0x0f 122 #define PF_POOL_STICKYADDR 0x20 123 #define PF_WSCALE_FLAG 0x80 124 #define PF_WSCALE_MASK 0x0f 125 126 #define PF_POOL_DYNTYPE(_o) \ 127 ((((_o) & PF_POOL_TYPEMASK) == PF_POOL_ROUNDROBIN) || \ 128 (((_o) & PF_POOL_TYPEMASK) == PF_POOL_LEASTSTATES) || \ 129 (((_o) & PF_POOL_TYPEMASK) == PF_POOL_RANDOM) || \ 130 (((_o) & PF_POOL_TYPEMASK) == PF_POOL_SRCHASH)) 131 132 #define PF_LOG 0x01 133 #define PF_LOG_ALL 0x02 134 #define PF_LOG_SOCKET_LOOKUP 0x04 135 #define PF_LOG_FORCE 0x08 136 #define PF_LOG_MATCHES 0x10 137 138 struct pf_addr { 139 union { 140 struct in_addr v4; 141 struct in6_addr v6; 142 u_int8_t addr8[16]; 143 u_int16_t addr16[8]; 144 u_int32_t addr32[4]; 145 } pfa; /* 128-bit address */ 146 #define v4 pfa.v4 147 #define v6 pfa.v6 148 #define addr8 pfa.addr8 149 #define addr16 pfa.addr16 150 #define addr32 pfa.addr32 151 }; 152 153 #define PF_TABLE_NAME_SIZE 32 154 155 #define PFI_AFLAG_NETWORK 0x01 156 #define PFI_AFLAG_BROADCAST 0x02 157 #define PFI_AFLAG_PEER 0x04 158 #define PFI_AFLAG_MODEMASK 0x07 159 #define PFI_AFLAG_NOALIAS 0x08 160 161 struct pf_addr_wrap { 162 union { 163 struct { 164 struct pf_addr addr; 165 struct pf_addr mask; 166 } a; 167 char ifname[IFNAMSIZ]; 168 char tblname[PF_TABLE_NAME_SIZE]; 169 char rtlabelname[RTLABEL_LEN]; 170 u_int32_t rtlabel; 171 } v; 172 union { 173 struct pfi_dynaddr *dyn; 174 struct pfr_ktable *tbl; 175 int dyncnt; 176 int tblcnt; 177 } p; 178 u_int8_t type; /* PF_ADDR_* */ 179 u_int8_t iflags; /* PFI_AFLAG_* */ 180 }; 181 182 #ifdef _KERNEL 183 184 struct pfi_dynaddr { 185 TAILQ_ENTRY(pfi_dynaddr) entry; 186 struct pf_addr pfid_addr4; 187 struct pf_addr pfid_mask4; 188 struct pf_addr pfid_addr6; 189 struct pf_addr pfid_mask6; 190 struct pfr_ktable *pfid_kt; 191 struct pfi_kif *pfid_kif; 192 void *pfid_hook_cookie; 193 int pfid_net; /* mask or 128 */ 194 int pfid_acnt4; /* address count IPv4 */ 195 int pfid_acnt6; /* address count IPv6 */ 196 sa_family_t pfid_af; /* rule af */ 197 u_int8_t pfid_iflags; /* PFI_AFLAG_* */ 198 }; 199 #endif /* _KERNEL */ 200 201 202 /* 203 * Logging macros 204 */ 205 206 #ifndef PF_DEBUGNAME 207 #define PF_DEBUGNAME "pf: " 208 #endif 209 210 #ifdef _KERNEL 211 #define DPFPRINTF(n, format, x...) \ 212 do { \ 213 if (pf_status.debug >= (n)) { \ 214 log(n, PF_DEBUGNAME); \ 215 addlog(format, ##x); \ 216 addlog("\n"); \ 217 } \ 218 } while (0) 219 #else 220 #ifdef PFDEBUG 221 #define DPFPRINTF(n, format, x...) \ 222 do { \ 223 fprintf(stderr, format, ##x); \ 224 fprintf(stderr, "\n"); \ 225 } while (0) 226 #else 227 #define DPFPRINTF(n, format, x...) ((void)0) 228 #endif /* PFDEBUG */ 229 #endif /* _KERNEL */ 230 231 232 /* 233 * Address manipulation macros 234 */ 235 236 #define PF_AEQ(a, b, c) \ 237 ((c == AF_INET && (a)->addr32[0] == (b)->addr32[0]) || \ 238 (c == AF_INET6 && \ 239 (a)->addr32[3] == (b)->addr32[3] && \ 240 (a)->addr32[2] == (b)->addr32[2] && \ 241 (a)->addr32[1] == (b)->addr32[1] && \ 242 (a)->addr32[0] == (b)->addr32[0])) \ 243 244 #define PF_ANEQ(a, b, c) \ 245 ((c == AF_INET && (a)->addr32[0] != (b)->addr32[0]) || \ 246 (c == AF_INET6 && \ 247 ((a)->addr32[3] != (b)->addr32[3] || \ 248 (a)->addr32[2] != (b)->addr32[2] || \ 249 (a)->addr32[1] != (b)->addr32[1] || \ 250 (a)->addr32[0] != (b)->addr32[0]))) \ 251 252 #define PF_AZERO(a, c) \ 253 ((c == AF_INET && !(a)->addr32[0]) || \ 254 (c == AF_INET6 && \ 255 !(a)->addr32[0] && !(a)->addr32[1] && \ 256 !(a)->addr32[2] && !(a)->addr32[3] )) \ 257 258 #define PF_MATCHA(n, a, m, b, f) \ 259 pf_match_addr(n, a, m, b, f) 260 261 #define PF_ACPY(a, b, f) \ 262 pf_addrcpy(a, b, f) 263 264 #define PF_AINC(a, f) \ 265 pf_addr_inc(a, f) 266 267 #define PF_POOLMASK(a, b, c, d, f) \ 268 pf_poolmask(a, b, c, d, f) 269 270 271 #define PF_MISMATCHAW(aw, x, af, neg, ifp, rtid) \ 272 ( \ 273 (((aw)->type == PF_ADDR_NOROUTE && \ 274 pf_routable((x), (af), NULL, (rtid))) || \ 275 (((aw)->type == PF_ADDR_URPFFAILED && (ifp) != NULL && \ 276 pf_routable((x), (af), (ifp), (rtid))) || \ 277 ((aw)->type == PF_ADDR_RTLABEL && \ 278 !pf_rtlabel_match((x), (af), (aw), (rtid))) || \ 279 ((aw)->type == PF_ADDR_TABLE && \ 280 !pfr_match_addr((aw)->p.tbl, (x), (af))) || \ 281 ((aw)->type == PF_ADDR_DYNIFTL && \ 282 !pfi_match_addr((aw)->p.dyn, (x), (af))) || \ 283 ((aw)->type == PF_ADDR_RANGE && \ 284 !pf_match_addr_range(&(aw)->v.a.addr, \ 285 &(aw)->v.a.mask, (x), (af))) || \ 286 ((aw)->type == PF_ADDR_ADDRMASK && \ 287 !PF_AZERO(&(aw)->v.a.mask, (af)) && \ 288 !PF_MATCHA(0, &(aw)->v.a.addr, \ 289 &(aw)->v.a.mask, (x), (af))))) != \ 290 (neg) \ 291 ) 292 293 struct pf_rule_uid { 294 uid_t uid[2]; 295 u_int8_t op; 296 }; 297 298 struct pf_rule_gid { 299 uid_t gid[2]; 300 u_int8_t op; 301 }; 302 303 struct pf_rule_addr { 304 struct pf_addr_wrap addr; 305 u_int16_t port[2]; 306 u_int8_t neg; 307 u_int8_t port_op; 308 u_int16_t weight; 309 }; 310 311 struct pf_poolhashkey { 312 union { 313 u_int8_t key8[16]; 314 u_int16_t key16[8]; 315 u_int32_t key32[4]; 316 } pfk; /* 128-bit hash key */ 317 #define key8 pfk.key8 318 #define key16 pfk.key16 319 #define key32 pfk.key32 320 }; 321 322 struct pf_pool { 323 struct pf_addr_wrap addr; 324 struct pf_poolhashkey key; 325 struct pf_addr counter; 326 char ifname[IFNAMSIZ]; 327 struct pfi_kif *kif; 328 int tblidx; 329 u_int64_t states; 330 int curweight; 331 u_int16_t weight; 332 u_int16_t proxy_port[2]; 333 u_int8_t port_op; 334 u_int8_t opts; 335 }; 336 337 /* A packed Operating System description for fingerprinting */ 338 typedef u_int32_t pf_osfp_t; 339 #define PF_OSFP_ANY ((pf_osfp_t)0) 340 #define PF_OSFP_UNKNOWN ((pf_osfp_t)-1) 341 #define PF_OSFP_NOMATCH ((pf_osfp_t)-2) 342 343 struct pf_osfp_entry { 344 SLIST_ENTRY(pf_osfp_entry) fp_entry; 345 pf_osfp_t fp_os; 346 int fp_enflags; 347 #define PF_OSFP_EXPANDED 0x001 /* expanded entry */ 348 #define PF_OSFP_GENERIC 0x002 /* generic signature */ 349 #define PF_OSFP_NODETAIL 0x004 /* no p0f details */ 350 #define PF_OSFP_LEN 32 351 u_char fp_class_nm[PF_OSFP_LEN]; 352 u_char fp_version_nm[PF_OSFP_LEN]; 353 u_char fp_subtype_nm[PF_OSFP_LEN]; 354 }; 355 #define PF_OSFP_ENTRY_EQ(a, b) \ 356 ((a)->fp_os == (b)->fp_os && \ 357 memcmp((a)->fp_class_nm, (b)->fp_class_nm, PF_OSFP_LEN) == 0 && \ 358 memcmp((a)->fp_version_nm, (b)->fp_version_nm, PF_OSFP_LEN) == 0 && \ 359 memcmp((a)->fp_subtype_nm, (b)->fp_subtype_nm, PF_OSFP_LEN) == 0) 360 361 /* handle pf_osfp_t packing */ 362 #define _FP_RESERVED_BIT 1 /* For the special negative #defines */ 363 #define _FP_UNUSED_BITS 1 364 #define _FP_CLASS_BITS 10 /* OS Class (Windows, Linux) */ 365 #define _FP_VERSION_BITS 10 /* OS version (95, 98, NT, 2.4.54, 3.2) */ 366 #define _FP_SUBTYPE_BITS 10 /* patch level (NT SP4, SP3, ECN patch) */ 367 #define PF_OSFP_UNPACK(osfp, class, version, subtype) do { \ 368 (class) = ((osfp) >> (_FP_VERSION_BITS+_FP_SUBTYPE_BITS)) & \ 369 ((1 << _FP_CLASS_BITS) - 1); \ 370 (version) = ((osfp) >> _FP_SUBTYPE_BITS) & \ 371 ((1 << _FP_VERSION_BITS) - 1);\ 372 (subtype) = (osfp) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 373 } while(0) 374 #define PF_OSFP_PACK(osfp, class, version, subtype) do { \ 375 (osfp) = ((class) & ((1 << _FP_CLASS_BITS) - 1)) << (_FP_VERSION_BITS \ 376 + _FP_SUBTYPE_BITS); \ 377 (osfp) |= ((version) & ((1 << _FP_VERSION_BITS) - 1)) << \ 378 _FP_SUBTYPE_BITS; \ 379 (osfp) |= (subtype) & ((1 << _FP_SUBTYPE_BITS) - 1); \ 380 } while(0) 381 382 /* the fingerprint of an OSes TCP SYN packet */ 383 typedef u_int64_t pf_tcpopts_t; 384 struct pf_os_fingerprint { 385 SLIST_HEAD(pf_osfp_enlist, pf_osfp_entry) fp_oses; /* list of matches */ 386 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 387 u_int16_t fp_wsize; /* TCP window size */ 388 u_int16_t fp_psize; /* ip->ip_len */ 389 u_int16_t fp_mss; /* TCP MSS */ 390 u_int16_t fp_flags; 391 #define PF_OSFP_WSIZE_MOD 0x0001 /* Window modulus */ 392 #define PF_OSFP_WSIZE_DC 0x0002 /* Window don't care */ 393 #define PF_OSFP_WSIZE_MSS 0x0004 /* Window multiple of MSS */ 394 #define PF_OSFP_WSIZE_MTU 0x0008 /* Window multiple of MTU */ 395 #define PF_OSFP_PSIZE_MOD 0x0010 /* packet size modulus */ 396 #define PF_OSFP_PSIZE_DC 0x0020 /* packet size don't care */ 397 #define PF_OSFP_WSCALE 0x0040 /* TCP window scaling */ 398 #define PF_OSFP_WSCALE_MOD 0x0080 /* TCP window scale modulus */ 399 #define PF_OSFP_WSCALE_DC 0x0100 /* TCP window scale dont-care */ 400 #define PF_OSFP_MSS 0x0200 /* TCP MSS */ 401 #define PF_OSFP_MSS_MOD 0x0400 /* TCP MSS modulus */ 402 #define PF_OSFP_MSS_DC 0x0800 /* TCP MSS dont-care */ 403 #define PF_OSFP_DF 0x1000 /* IPv4 don't fragment bit */ 404 #define PF_OSFP_TS0 0x2000 /* Zero timestamp */ 405 #define PF_OSFP_INET6 0x4000 /* IPv6 */ 406 u_int8_t fp_optcnt; /* TCP option count */ 407 u_int8_t fp_wscale; /* TCP window scaling */ 408 u_int8_t fp_ttl; /* IPv4 TTL */ 409 #define PF_OSFP_MAXTTL_OFFSET 40 410 /* TCP options packing */ 411 #define PF_OSFP_TCPOPT_NOP 0x0 /* TCP NOP option */ 412 #define PF_OSFP_TCPOPT_WSCALE 0x1 /* TCP window scaling option */ 413 #define PF_OSFP_TCPOPT_MSS 0x2 /* TCP max segment size opt */ 414 #define PF_OSFP_TCPOPT_SACK 0x3 /* TCP SACK OK option */ 415 #define PF_OSFP_TCPOPT_TS 0x4 /* TCP timestamp option */ 416 #define PF_OSFP_TCPOPT_BITS 3 /* bits used by each option */ 417 #define PF_OSFP_MAX_OPTS \ 418 (sizeof(((struct pf_os_fingerprint *)0)->fp_tcpopts) * 8) \ 419 / PF_OSFP_TCPOPT_BITS 420 421 SLIST_ENTRY(pf_os_fingerprint) fp_next; 422 }; 423 424 struct pf_osfp_ioctl { 425 struct pf_osfp_entry fp_os; 426 pf_tcpopts_t fp_tcpopts; /* packed TCP options */ 427 u_int16_t fp_wsize; /* TCP window size */ 428 u_int16_t fp_psize; /* ip->ip_len */ 429 u_int16_t fp_mss; /* TCP MSS */ 430 u_int16_t fp_flags; 431 u_int8_t fp_optcnt; /* TCP option count */ 432 u_int8_t fp_wscale; /* TCP window scaling */ 433 u_int8_t fp_ttl; /* IPv4 TTL */ 434 435 int fp_getnum; /* DIOCOSFPGET number */ 436 }; 437 438 struct pf_rule_actions { 439 int rtableid; 440 u_int16_t qid; 441 u_int16_t pqid; 442 u_int16_t max_mss; 443 u_int16_t flags; 444 u_int8_t log; 445 u_int8_t set_tos; 446 u_int8_t min_ttl; 447 u_int8_t set_prio[2]; 448 u_int8_t pad[3]; 449 }; 450 451 union pf_rule_ptr { 452 struct pf_rule *ptr; 453 u_int32_t nr; 454 }; 455 456 #define PF_ANCHOR_NAME_SIZE 64 457 458 struct pf_rule { 459 struct pf_rule_addr src; 460 struct pf_rule_addr dst; 461 #define PF_SKIP_IFP 0 462 #define PF_SKIP_DIR 1 463 #define PF_SKIP_RDOM 2 464 #define PF_SKIP_AF 3 465 #define PF_SKIP_PROTO 4 466 #define PF_SKIP_SRC_ADDR 5 467 #define PF_SKIP_DST_ADDR 6 468 #define PF_SKIP_SRC_PORT 7 469 #define PF_SKIP_DST_PORT 8 470 #define PF_SKIP_COUNT 9 471 union pf_rule_ptr skip[PF_SKIP_COUNT]; 472 #define PF_RULE_LABEL_SIZE 64 473 char label[PF_RULE_LABEL_SIZE]; 474 #define PF_QNAME_SIZE 64 475 char ifname[IFNAMSIZ]; 476 char rcv_ifname[IFNAMSIZ]; 477 char qname[PF_QNAME_SIZE]; 478 char pqname[PF_QNAME_SIZE]; 479 #define PF_TAG_NAME_SIZE 64 480 char tagname[PF_TAG_NAME_SIZE]; 481 char match_tagname[PF_TAG_NAME_SIZE]; 482 483 char overload_tblname[PF_TABLE_NAME_SIZE]; 484 485 TAILQ_ENTRY(pf_rule) entries; 486 struct pf_pool nat; 487 struct pf_pool rdr; 488 struct pf_pool route; 489 490 u_int64_t evaluations; 491 u_int64_t packets[2]; 492 u_int64_t bytes[2]; 493 494 struct pfi_kif *kif; 495 struct pfi_kif *rcv_kif; 496 struct pf_anchor *anchor; 497 struct pfr_ktable *overload_tbl; 498 499 pf_osfp_t os_fingerprint; 500 501 int rtableid; 502 int onrdomain; 503 u_int32_t timeout[PFTM_MAX]; 504 u_int32_t states_cur; 505 u_int32_t states_tot; 506 u_int32_t max_states; 507 u_int32_t src_nodes; 508 u_int32_t max_src_nodes; 509 u_int32_t max_src_states; 510 u_int32_t max_src_conn; 511 struct { 512 u_int32_t limit; 513 u_int32_t seconds; 514 } max_src_conn_rate; 515 u_int32_t qid; 516 u_int32_t pqid; 517 u_int32_t rt_listid; 518 u_int32_t nr; 519 u_int32_t prob; 520 uid_t cuid; 521 pid_t cpid; 522 523 u_int16_t return_icmp; 524 u_int16_t return_icmp6; 525 u_int16_t max_mss; 526 u_int16_t tag; 527 u_int16_t match_tag; 528 u_int16_t scrub_flags; 529 530 struct pf_rule_uid uid; 531 struct pf_rule_gid gid; 532 533 u_int32_t rule_flag; 534 u_int8_t action; 535 u_int8_t direction; 536 u_int8_t log; 537 u_int8_t logif; 538 u_int8_t quick; 539 u_int8_t ifnot; 540 u_int8_t match_tag_not; 541 542 #define PF_STATE_NORMAL 0x1 543 #define PF_STATE_MODULATE 0x2 544 #define PF_STATE_SYNPROXY 0x3 545 u_int8_t keep_state; 546 sa_family_t af; 547 u_int8_t proto; 548 u_int8_t type; 549 u_int8_t code; 550 u_int8_t flags; 551 u_int8_t flagset; 552 u_int8_t min_ttl; 553 u_int8_t allow_opts; 554 u_int8_t rt; 555 u_int8_t return_ttl; 556 u_int8_t tos; 557 u_int8_t set_tos; 558 u_int8_t anchor_relative; 559 u_int8_t anchor_wildcard; 560 561 #define PF_FLUSH 0x01 562 #define PF_FLUSH_GLOBAL 0x02 563 u_int8_t flush; 564 u_int8_t prio; 565 u_int8_t set_prio[2]; 566 sa_family_t naf; 567 u_int8_t rcvifnot; 568 u_int8_t pad[2]; 569 570 struct { 571 struct pf_addr addr; 572 u_int16_t port; 573 } divert, divert_packet; 574 575 SLIST_ENTRY(pf_rule) gcle; 576 struct pf_ruleset *ruleset; 577 time_t exptime; 578 }; 579 580 /* rule flags */ 581 #define PFRULE_DROP 0x0000 582 #define PFRULE_RETURNRST 0x0001 583 #define PFRULE_FRAGMENT 0x0002 584 #define PFRULE_RETURNICMP 0x0004 585 #define PFRULE_RETURN 0x0008 586 #define PFRULE_NOSYNC 0x0010 587 #define PFRULE_SRCTRACK 0x0020 /* track source states */ 588 #define PFRULE_RULESRCTRACK 0x0040 /* per rule */ 589 590 /* rule flags again */ 591 #define PFRULE_IFBOUND 0x00010000 /* if-bound */ 592 #define PFRULE_STATESLOPPY 0x00020000 /* sloppy state tracking */ 593 #define PFRULE_PFLOW 0x00040000 594 #define PFRULE_ONCE 0x00100000 /* one shot rule */ 595 #define PFRULE_AFTO 0x00200000 /* af-to rule */ 596 #define PFRULE_EXPIRED 0x00400000 /* one shot rule hit by pkt */ 597 598 #define PFSTATE_HIWAT 10000 /* default state table size */ 599 #define PFSTATE_ADAPT_START 6000 /* default adaptive timeout start */ 600 #define PFSTATE_ADAPT_END 12000 /* default adaptive timeout end */ 601 602 603 struct pf_threshold { 604 u_int32_t limit; 605 #define PF_THRESHOLD_MULT 1000 606 #define PF_THRESHOLD_MAX 0xffffffff / PF_THRESHOLD_MULT 607 u_int32_t seconds; 608 u_int32_t count; 609 u_int32_t last; 610 }; 611 612 struct pf_rule_item { 613 SLIST_ENTRY(pf_rule_item) entry; 614 struct pf_rule *r; 615 }; 616 617 SLIST_HEAD(pf_rule_slist, pf_rule_item); 618 619 enum pf_sn_types { PF_SN_NONE, PF_SN_NAT, PF_SN_RDR, PF_SN_ROUTE, PF_SN_MAX }; 620 621 struct pf_src_node { 622 RB_ENTRY(pf_src_node) entry; 623 struct pf_addr addr; 624 struct pf_addr raddr; 625 union pf_rule_ptr rule; 626 struct pfi_kif *kif; 627 u_int64_t bytes[2]; 628 u_int64_t packets[2]; 629 u_int32_t states; 630 u_int32_t conn; 631 struct pf_threshold conn_rate; 632 int32_t creation; 633 int32_t expire; 634 sa_family_t af; 635 sa_family_t naf; 636 u_int8_t type; 637 }; 638 639 struct pf_sn_item { 640 SLIST_ENTRY(pf_sn_item) next; 641 struct pf_src_node *sn; 642 }; 643 644 SLIST_HEAD(pf_sn_head, pf_sn_item); 645 646 #define PFSNODE_HIWAT 10000 /* default source node table size */ 647 648 struct pf_state_scrub { 649 struct timeval pfss_last; /* time received last packet */ 650 u_int32_t pfss_tsecr; /* last echoed timestamp */ 651 u_int32_t pfss_tsval; /* largest timestamp */ 652 u_int32_t pfss_tsval0; /* original timestamp */ 653 u_int16_t pfss_flags; 654 #define PFSS_TIMESTAMP 0x0001 /* modulate timestamp */ 655 #define PFSS_PAWS 0x0010 /* stricter PAWS checks */ 656 #define PFSS_PAWS_IDLED 0x0020 /* was idle too long. no PAWS */ 657 #define PFSS_DATA_TS 0x0040 /* timestamp on data packets */ 658 #define PFSS_DATA_NOTS 0x0080 /* no timestamp on data packets */ 659 u_int8_t pfss_ttl; /* stashed TTL */ 660 u_int8_t pad; 661 u_int32_t pfss_ts_mod; /* timestamp modulation */ 662 }; 663 664 struct pf_state_host { 665 struct pf_addr addr; 666 u_int16_t port; 667 u_int16_t pad; 668 }; 669 670 struct pf_state_peer { 671 struct pf_state_scrub *scrub; /* state is scrubbed */ 672 u_int32_t seqlo; /* Max sequence number sent */ 673 u_int32_t seqhi; /* Max the other end ACKd + win */ 674 u_int32_t seqdiff; /* Sequence number modulator */ 675 u_int16_t max_win; /* largest window (pre scaling) */ 676 u_int16_t mss; /* Maximum segment size option */ 677 u_int8_t state; /* active state level */ 678 u_int8_t wscale; /* window scaling factor */ 679 u_int8_t tcp_est; /* Did we reach TCPS_ESTABLISHED */ 680 u_int8_t pad[1]; 681 }; 682 683 TAILQ_HEAD(pf_state_queue, pf_state); 684 685 /* keep synced with struct pf_state_key, used in RB_FIND */ 686 struct pf_state_key_cmp { 687 struct pf_addr addr[2]; 688 u_int16_t port[2]; 689 u_int16_t rdomain; 690 sa_family_t af; 691 u_int8_t proto; 692 }; 693 694 struct pf_state_item { 695 TAILQ_ENTRY(pf_state_item) entry; 696 struct pf_state *s; 697 }; 698 699 TAILQ_HEAD(pf_statelisthead, pf_state_item); 700 701 struct pf_state_key { 702 struct pf_addr addr[2]; 703 u_int16_t port[2]; 704 u_int16_t rdomain; 705 sa_family_t af; 706 u_int8_t proto; 707 708 RB_ENTRY(pf_state_key) entry; 709 struct pf_statelisthead states; 710 struct pf_state_key *reverse; 711 struct inpcb *inp; 712 pf_refcnt_t refcnt; 713 u_int8_t removed; 714 }; 715 #define PF_REVERSED_KEY(key, family) \ 716 ((key[PF_SK_WIRE]->af != key[PF_SK_STACK]->af) && \ 717 (key[PF_SK_WIRE]->af != (family))) 718 719 /* keep synced with struct pf_state, used in RB_FIND */ 720 struct pf_state_cmp { 721 u_int64_t id; 722 u_int32_t creatorid; 723 u_int8_t direction; 724 u_int8_t pad[3]; 725 }; 726 727 struct pf_state { 728 u_int64_t id; 729 u_int32_t creatorid; 730 u_int8_t direction; 731 u_int8_t pad[3]; 732 733 TAILQ_ENTRY(pf_state) sync_list; 734 TAILQ_ENTRY(pf_state) entry_list; 735 RB_ENTRY(pf_state) entry_id; 736 struct pf_state_peer src; 737 struct pf_state_peer dst; 738 struct pf_rule_slist match_rules; 739 union pf_rule_ptr rule; 740 union pf_rule_ptr anchor; 741 union pf_rule_ptr natrule; 742 struct pf_addr rt_addr; 743 struct pf_sn_head src_nodes; 744 struct pf_state_key *key[2]; /* addresses stack and wire */ 745 struct pfi_kif *kif; 746 struct pfi_kif *rt_kif; 747 u_int64_t packets[2]; 748 u_int64_t bytes[2]; 749 int32_t creation; 750 int32_t expire; 751 int32_t pfsync_time; 752 u_int16_t qid; 753 u_int16_t pqid; 754 u_int16_t tag; 755 u_int16_t state_flags; 756 #define PFSTATE_ALLOWOPTS 0x0001 757 #define PFSTATE_SLOPPY 0x0002 758 #define PFSTATE_PFLOW 0x0004 759 #define PFSTATE_NOSYNC 0x0008 760 #define PFSTATE_ACK 0x0010 761 #define PFSTATE_NODF 0x0020 762 #define PFSTATE_SETTOS 0x0040 763 #define PFSTATE_RANDOMID 0x0080 764 #define PFSTATE_SCRUB_TCP 0x0100 765 #define PFSTATE_SETPRIO 0x0200 766 #define PFSTATE_SCRUBMASK (PFSTATE_NODF|PFSTATE_RANDOMID|PFSTATE_SCRUB_TCP) 767 #define PFSTATE_SETMASK (PFSTATE_SETTOS|PFSTATE_SETPRIO) 768 u_int8_t log; 769 u_int8_t timeout; 770 u_int8_t sync_state; /* PFSYNC_S_x */ 771 u_int8_t sync_updates; 772 int rtableid[2]; /* rtables stack and wire */ 773 u_int8_t min_ttl; 774 u_int8_t set_tos; 775 u_int8_t set_prio[2]; 776 u_int16_t max_mss; 777 u_int16_t if_index_in; 778 u_int16_t if_index_out; 779 u_int8_t pad2[2]; 780 }; 781 782 /* 783 * Unified state structures for pulling states out of the kernel 784 * used by pfsync(4) and the pf(4) ioctl. 785 */ 786 struct pfsync_state_scrub { 787 u_int16_t pfss_flags; 788 u_int8_t pfss_ttl; /* stashed TTL */ 789 #define PFSYNC_SCRUB_FLAG_VALID 0x01 790 u_int8_t scrub_flag; 791 u_int32_t pfss_ts_mod; /* timestamp modulation */ 792 } __packed; 793 794 struct pfsync_state_peer { 795 struct pfsync_state_scrub scrub; /* state is scrubbed */ 796 u_int32_t seqlo; /* Max sequence number sent */ 797 u_int32_t seqhi; /* Max the other end ACKd + win */ 798 u_int32_t seqdiff; /* Sequence number modulator */ 799 u_int16_t max_win; /* largest window (pre scaling) */ 800 u_int16_t mss; /* Maximum segment size option */ 801 u_int8_t state; /* active state level */ 802 u_int8_t wscale; /* window scaling factor */ 803 u_int8_t pad[6]; 804 } __packed; 805 806 struct pfsync_state_key { 807 struct pf_addr addr[2]; 808 u_int16_t port[2]; 809 u_int16_t rdomain; 810 sa_family_t af; 811 u_int8_t pad; 812 }; 813 814 struct pfsync_state { 815 u_int64_t id; 816 char ifname[IFNAMSIZ]; 817 struct pfsync_state_key key[2]; 818 struct pfsync_state_peer src; 819 struct pfsync_state_peer dst; 820 struct pf_addr rt_addr; 821 u_int32_t rule; 822 u_int32_t anchor; 823 u_int32_t nat_rule; 824 u_int32_t creation; 825 u_int32_t expire; 826 u_int32_t packets[2][2]; 827 u_int32_t bytes[2][2]; 828 u_int32_t creatorid; 829 int32_t rtableid[2]; 830 u_int16_t max_mss; 831 sa_family_t af; 832 u_int8_t proto; 833 u_int8_t direction; 834 u_int8_t log; 835 u_int8_t pad0; 836 u_int8_t timeout; 837 u_int8_t sync_flags; 838 u_int8_t updates; 839 u_int8_t min_ttl; 840 u_int8_t set_tos; 841 u_int16_t state_flags; 842 u_int8_t set_prio[2]; 843 } __packed; 844 845 #define PFSYNC_FLAG_SRCNODE 0x04 846 #define PFSYNC_FLAG_NATSRCNODE 0x08 847 848 /* for copies to/from network byte order */ 849 /* ioctl interface also uses network byte order */ 850 #define pf_state_peer_hton(s,d) do { \ 851 (d)->seqlo = htonl((s)->seqlo); \ 852 (d)->seqhi = htonl((s)->seqhi); \ 853 (d)->seqdiff = htonl((s)->seqdiff); \ 854 (d)->max_win = htons((s)->max_win); \ 855 (d)->mss = htons((s)->mss); \ 856 (d)->state = (s)->state; \ 857 (d)->wscale = (s)->wscale; \ 858 if ((s)->scrub) { \ 859 (d)->scrub.pfss_flags = \ 860 htons((s)->scrub->pfss_flags & PFSS_TIMESTAMP); \ 861 (d)->scrub.pfss_ttl = (s)->scrub->pfss_ttl; \ 862 (d)->scrub.pfss_ts_mod = htonl((s)->scrub->pfss_ts_mod);\ 863 (d)->scrub.scrub_flag = PFSYNC_SCRUB_FLAG_VALID; \ 864 } \ 865 } while (0) 866 867 #define pf_state_peer_ntoh(s,d) do { \ 868 (d)->seqlo = ntohl((s)->seqlo); \ 869 (d)->seqhi = ntohl((s)->seqhi); \ 870 (d)->seqdiff = ntohl((s)->seqdiff); \ 871 (d)->max_win = ntohs((s)->max_win); \ 872 (d)->mss = ntohs((s)->mss); \ 873 (d)->state = (s)->state; \ 874 (d)->wscale = (s)->wscale; \ 875 if ((s)->scrub.scrub_flag == PFSYNC_SCRUB_FLAG_VALID && \ 876 (d)->scrub != NULL) { \ 877 (d)->scrub->pfss_flags = \ 878 ntohs((s)->scrub.pfss_flags) & PFSS_TIMESTAMP; \ 879 (d)->scrub->pfss_ttl = (s)->scrub.pfss_ttl; \ 880 (d)->scrub->pfss_ts_mod = ntohl((s)->scrub.pfss_ts_mod);\ 881 } \ 882 } while (0) 883 884 #define pf_state_counter_hton(s,d) do { \ 885 d[0] = htonl((s>>32)&0xffffffff); \ 886 d[1] = htonl(s&0xffffffff); \ 887 } while (0) 888 889 #define pf_state_counter_from_pfsync(s) \ 890 (((u_int64_t)(s[0])<<32) | (u_int64_t)(s[1])) 891 892 #define pf_state_counter_ntoh(s,d) do { \ 893 d = ntohl(s[0]); \ 894 d = d<<32; \ 895 d += ntohl(s[1]); \ 896 } while (0) 897 898 TAILQ_HEAD(pf_rulequeue, pf_rule); 899 900 struct pf_anchor; 901 902 struct pf_ruleset { 903 struct { 904 struct pf_rulequeue queues[2]; 905 struct { 906 struct pf_rulequeue *ptr; 907 struct pf_rule **ptr_array; 908 u_int32_t rcount; 909 u_int32_t ticket; 910 int open; 911 } active, inactive; 912 } rules; 913 struct pf_anchor *anchor; 914 u_int32_t tticket; 915 int tables; 916 int topen; 917 }; 918 919 RB_HEAD(pf_anchor_global, pf_anchor); 920 RB_HEAD(pf_anchor_node, pf_anchor); 921 struct pf_anchor { 922 RB_ENTRY(pf_anchor) entry_global; 923 RB_ENTRY(pf_anchor) entry_node; 924 struct pf_anchor *parent; 925 struct pf_anchor_node children; 926 char name[PF_ANCHOR_NAME_SIZE]; 927 char path[PATH_MAX]; 928 struct pf_ruleset ruleset; 929 int refcnt; /* anchor rules */ 930 int match; 931 }; 932 RB_PROTOTYPE(pf_anchor_global, pf_anchor, entry_global, pf_anchor_compare) 933 RB_PROTOTYPE(pf_anchor_node, pf_anchor, entry_node, pf_anchor_compare) 934 935 #define PF_RESERVED_ANCHOR "_pf" 936 937 #define PFR_TFLAG_PERSIST 0x00000001 938 #define PFR_TFLAG_CONST 0x00000002 939 #define PFR_TFLAG_ACTIVE 0x00000004 940 #define PFR_TFLAG_INACTIVE 0x00000008 941 #define PFR_TFLAG_REFERENCED 0x00000010 942 #define PFR_TFLAG_REFDANCHOR 0x00000020 943 #define PFR_TFLAG_COUNTERS 0x00000040 944 /* Adjust masks below when adding flags. */ 945 #define PFR_TFLAG_USRMASK 0x00000043 946 #define PFR_TFLAG_SETMASK 0x0000003C 947 #define PFR_TFLAG_ALLMASK 0x0000007F 948 949 struct pfr_table { 950 char pfrt_anchor[PATH_MAX]; 951 char pfrt_name[PF_TABLE_NAME_SIZE]; 952 u_int32_t pfrt_flags; 953 u_int8_t pfrt_fback; 954 }; 955 956 enum { PFR_FB_NONE, PFR_FB_MATCH, PFR_FB_ADDED, PFR_FB_DELETED, 957 PFR_FB_CHANGED, PFR_FB_CLEARED, PFR_FB_DUPLICATE, 958 PFR_FB_NOTMATCH, PFR_FB_CONFLICT, PFR_FB_NOCOUNT, PFR_FB_MAX }; 959 960 struct pfr_addr { 961 union { 962 struct in_addr _pfra_ip4addr; 963 struct in6_addr _pfra_ip6addr; 964 } pfra_u; 965 char pfra_ifname[IFNAMSIZ]; 966 u_int32_t pfra_states; 967 u_int16_t pfra_weight; 968 u_int8_t pfra_af; 969 u_int8_t pfra_net; 970 u_int8_t pfra_not; 971 u_int8_t pfra_fback; 972 u_int8_t pfra_type; 973 u_int8_t pad[7]; 974 }; 975 #define pfra_ip4addr pfra_u._pfra_ip4addr 976 #define pfra_ip6addr pfra_u._pfra_ip6addr 977 978 enum { PFR_DIR_IN, PFR_DIR_OUT, PFR_DIR_MAX }; 979 enum { PFR_OP_BLOCK, PFR_OP_MATCH, PFR_OP_PASS, PFR_OP_ADDR_MAX, PFR_OP_TABLE_MAX }; 980 #define PFR_OP_XPASS PFR_OP_ADDR_MAX 981 982 struct pfr_astats { 983 struct pfr_addr pfras_a; 984 u_int64_t pfras_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 985 u_int64_t pfras_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 986 time_t pfras_tzero; 987 }; 988 989 enum { PFR_REFCNT_RULE, PFR_REFCNT_ANCHOR, PFR_REFCNT_MAX }; 990 991 struct pfr_tstats { 992 struct pfr_table pfrts_t; 993 u_int64_t pfrts_packets[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 994 u_int64_t pfrts_bytes[PFR_DIR_MAX][PFR_OP_TABLE_MAX]; 995 u_int64_t pfrts_match; 996 u_int64_t pfrts_nomatch; 997 time_t pfrts_tzero; 998 int pfrts_cnt; 999 int pfrts_refcnt[PFR_REFCNT_MAX]; 1000 }; 1001 #define pfrts_name pfrts_t.pfrt_name 1002 #define pfrts_flags pfrts_t.pfrt_flags 1003 1004 struct pfr_kcounters { 1005 u_int64_t pfrkc_packets[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1006 u_int64_t pfrkc_bytes[PFR_DIR_MAX][PFR_OP_ADDR_MAX]; 1007 u_int64_t states; 1008 }; 1009 1010 /* 1011 * XXX ip_ipsp.h's sockaddr_union should be converted to sockaddr * 1012 * passing with correct sa_len, then a good approach for cleaning this 1013 * will become more clear. 1014 */ 1015 union pfsockaddr_union { 1016 struct sockaddr sa; 1017 struct sockaddr_in sin; 1018 struct sockaddr_in6 sin6; 1019 }; 1020 1021 SLIST_HEAD(pfr_kentryworkq, pfr_kentry); 1022 struct _pfr_kentry { 1023 struct radix_node _pfrke_node[2]; 1024 union pfsockaddr_union _pfrke_sa; 1025 SLIST_ENTRY(pfr_kentry) _pfrke_workq; 1026 struct pfr_kcounters *_pfrke_counters; 1027 time_t _pfrke_tzero; 1028 u_int8_t _pfrke_af; 1029 u_int8_t _pfrke_net; 1030 u_int8_t _pfrke_flags; 1031 u_int8_t _pfrke_type; 1032 }; 1033 #define PFRKE_FLAG_NOT 0x01 1034 #define PFRKE_FLAG_MARK 0x02 1035 1036 /* pfrke_type */ 1037 enum { PFRKE_PLAIN, PFRKE_ROUTE, PFRKE_COST, PFRKE_MAX }; 1038 1039 struct pfr_kentry { 1040 union { 1041 struct _pfr_kentry _ke; 1042 } u; 1043 }; 1044 #define pfrke_node u._ke._pfrke_node 1045 #define pfrke_sa u._ke._pfrke_sa 1046 #define pfrke_workq u._ke._pfrke_workq 1047 #define pfrke_counters u._ke._pfrke_counters 1048 #define pfrke_tzero u._ke._pfrke_tzero 1049 #define pfrke_af u._ke._pfrke_af 1050 #define pfrke_net u._ke._pfrke_net 1051 #define pfrke_flags u._ke._pfrke_flags 1052 #define pfrke_type u._ke._pfrke_type 1053 1054 struct pfr_kentry_route { 1055 union { 1056 struct _pfr_kentry _ke; 1057 } u; 1058 1059 struct pfi_kif *kif; 1060 }; 1061 1062 struct pfr_kentry_cost { 1063 union { 1064 struct _pfr_kentry _ke; 1065 } u; 1066 1067 struct pfi_kif *kif; 1068 /* Above overlaps with pfr_kentry route */ 1069 1070 u_int16_t weight; 1071 }; 1072 1073 struct pfr_kentry_all { 1074 union { 1075 struct _pfr_kentry _ke; 1076 struct pfr_kentry_route kr; 1077 struct pfr_kentry_cost kc; 1078 } u; 1079 }; 1080 #define pfrke_rkif u.kr.kif 1081 1082 SLIST_HEAD(pfr_ktableworkq, pfr_ktable); 1083 RB_HEAD(pfr_ktablehead, pfr_ktable); 1084 struct pfr_ktable { 1085 struct pfr_tstats pfrkt_ts; 1086 RB_ENTRY(pfr_ktable) pfrkt_tree; 1087 SLIST_ENTRY(pfr_ktable) pfrkt_workq; 1088 struct radix_node_head *pfrkt_ip4; 1089 struct radix_node_head *pfrkt_ip6; 1090 struct pfr_ktable *pfrkt_shadow; 1091 struct pfr_ktable *pfrkt_root; 1092 struct pf_ruleset *pfrkt_rs; 1093 long pfrkt_larg; 1094 int pfrkt_nflags; 1095 u_int64_t pfrkt_refcntcost; 1096 u_int16_t pfrkt_gcdweight; 1097 u_int16_t pfrkt_maxweight; 1098 }; 1099 #define pfrkt_t pfrkt_ts.pfrts_t 1100 #define pfrkt_name pfrkt_t.pfrt_name 1101 #define pfrkt_anchor pfrkt_t.pfrt_anchor 1102 #define pfrkt_ruleset pfrkt_t.pfrt_ruleset 1103 #define pfrkt_flags pfrkt_t.pfrt_flags 1104 #define pfrkt_cnt pfrkt_ts.pfrts_cnt 1105 #define pfrkt_refcnt pfrkt_ts.pfrts_refcnt 1106 #define pfrkt_packets pfrkt_ts.pfrts_packets 1107 #define pfrkt_bytes pfrkt_ts.pfrts_bytes 1108 #define pfrkt_match pfrkt_ts.pfrts_match 1109 #define pfrkt_nomatch pfrkt_ts.pfrts_nomatch 1110 #define pfrkt_tzero pfrkt_ts.pfrts_tzero 1111 1112 RB_HEAD(pf_state_tree, pf_state_key); 1113 RB_PROTOTYPE(pf_state_tree, pf_state_key, entry, pf_state_compare_key) 1114 1115 RB_HEAD(pf_state_tree_ext_gwy, pf_state_key); 1116 RB_PROTOTYPE(pf_state_tree_ext_gwy, pf_state_key, 1117 entry_ext_gwy, pf_state_compare_ext_gwy) 1118 1119 RB_HEAD(pfi_ifhead, pfi_kif); 1120 1121 /* state tables */ 1122 extern struct pf_state_tree pf_statetbl; 1123 1124 /* keep synced with pfi_kif, used in RB_FIND */ 1125 struct pfi_kif_cmp { 1126 char pfik_name[IFNAMSIZ]; 1127 }; 1128 1129 struct ifnet; 1130 struct ifg_group; 1131 1132 struct pfi_kif { 1133 char pfik_name[IFNAMSIZ]; 1134 RB_ENTRY(pfi_kif) pfik_tree; 1135 u_int64_t pfik_packets[2][2][2]; 1136 u_int64_t pfik_bytes[2][2][2]; 1137 time_t pfik_tzero; 1138 int pfik_flags; 1139 int pfik_flags_new; 1140 void *pfik_ah_cookie; 1141 struct ifnet *pfik_ifp; 1142 struct ifg_group *pfik_group; 1143 int pfik_states; 1144 int pfik_rules; 1145 int pfik_routes; 1146 TAILQ_HEAD(, pfi_dynaddr) pfik_dynaddrs; 1147 }; 1148 1149 enum pfi_kif_refs { 1150 PFI_KIF_REF_NONE, 1151 PFI_KIF_REF_STATE, 1152 PFI_KIF_REF_RULE, 1153 PFI_KIF_REF_ROUTE 1154 }; 1155 1156 #define PFI_IFLAG_SKIP 0x0100 /* skip filtering on interface */ 1157 #define PFI_IFLAG_ANY 0x0200 /* match any non-loopback interface */ 1158 1159 struct pf_pdesc { 1160 struct { 1161 int done; 1162 uid_t uid; 1163 gid_t gid; 1164 pid_t pid; 1165 } lookup; 1166 u_int64_t tot_len; /* Make Mickey money */ 1167 union { 1168 struct tcphdr *tcp; 1169 struct udphdr *udp; 1170 struct icmp *icmp; 1171 #ifdef INET6 1172 struct icmp6_hdr *icmp6; 1173 #endif /* INET6 */ 1174 void *any; 1175 } hdr; 1176 1177 struct pf_addr nsaddr; /* src address after NAT */ 1178 struct pf_addr ndaddr; /* dst address after NAT */ 1179 1180 struct pfi_kif *kif; /* incoming interface */ 1181 struct mbuf *m; /* mbuf containing the packet */ 1182 struct pf_addr *src; /* src address */ 1183 struct pf_addr *dst; /* dst address */ 1184 u_int16_t *pcksum; /* proto cksum */ 1185 u_int16_t *sport; 1186 u_int16_t *dport; 1187 u_int16_t osport; 1188 u_int16_t odport; 1189 u_int16_t nsport; /* src port after NAT */ 1190 u_int16_t ndport; /* dst port after NAT */ 1191 1192 u_int32_t off; /* protocol header offset */ 1193 u_int32_t hdrlen; /* protocol header length */ 1194 u_int32_t p_len; /* length of protocol payload */ 1195 u_int32_t extoff; /* extentsion header offset */ 1196 u_int32_t fragoff; /* fragment header offset */ 1197 u_int32_t jumbolen; /* length from v6 jumbo header */ 1198 u_int32_t badopts; /* v4 options or v6 routing headers */ 1199 1200 u_int16_t rdomain; /* original routing domain */ 1201 u_int16_t virtual_proto; 1202 #define PF_VPROTO_FRAGMENT 256 1203 sa_family_t af; 1204 sa_family_t naf; 1205 u_int8_t proto; 1206 u_int8_t tos; 1207 u_int8_t ttl; 1208 u_int8_t dir; /* direction */ 1209 u_int8_t sidx; /* key index for source */ 1210 u_int8_t didx; /* key index for destination */ 1211 u_int8_t destchg; /* flag set when destination changed */ 1212 u_int8_t pflog; /* flags for packet logging */ 1213 }; 1214 1215 1216 /* flags for RDR options */ 1217 #define PF_DPORT_RANGE 0x01 /* Dest port uses range */ 1218 #define PF_RPORT_RANGE 0x02 /* RDR'ed port uses range */ 1219 1220 /* Reasons code for passing/dropping a packet */ 1221 #define PFRES_MATCH 0 /* Explicit match of a rule */ 1222 #define PFRES_BADOFF 1 /* Bad offset for pull_hdr */ 1223 #define PFRES_FRAG 2 /* Dropping following fragment */ 1224 #define PFRES_SHORT 3 /* Dropping short packet */ 1225 #define PFRES_NORM 4 /* Dropping by normalizer */ 1226 #define PFRES_MEMORY 5 /* Dropped due to lacking mem */ 1227 #define PFRES_TS 6 /* Bad TCP Timestamp (RFC1323) */ 1228 #define PFRES_CONGEST 7 /* Congestion (of ipintrq) */ 1229 #define PFRES_IPOPTIONS 8 /* IP option */ 1230 #define PFRES_PROTCKSUM 9 /* Protocol checksum invalid */ 1231 #define PFRES_BADSTATE 10 /* State mismatch */ 1232 #define PFRES_STATEINS 11 /* State insertion failure */ 1233 #define PFRES_MAXSTATES 12 /* State limit */ 1234 #define PFRES_SRCLIMIT 13 /* Source node/conn limit */ 1235 #define PFRES_SYNPROXY 14 /* SYN proxy */ 1236 #define PFRES_TRANSLATE 15 /* No translation address available */ 1237 #define PFRES_NOROUTE 16 /* No route found for PBR action */ 1238 #define PFRES_MAX 17 /* total+1 */ 1239 1240 #define PFRES_NAMES { \ 1241 "match", \ 1242 "bad-offset", \ 1243 "fragment", \ 1244 "short", \ 1245 "normalize", \ 1246 "memory", \ 1247 "bad-timestamp", \ 1248 "congestion", \ 1249 "ip-option", \ 1250 "proto-cksum", \ 1251 "state-mismatch", \ 1252 "state-insert", \ 1253 "state-limit", \ 1254 "src-limit", \ 1255 "synproxy", \ 1256 "translate", \ 1257 "no-route", \ 1258 NULL \ 1259 } 1260 1261 /* Counters for other things we want to keep track of */ 1262 #define LCNT_STATES 0 /* states */ 1263 #define LCNT_SRCSTATES 1 /* max-src-states */ 1264 #define LCNT_SRCNODES 2 /* max-src-nodes */ 1265 #define LCNT_SRCCONN 3 /* max-src-conn */ 1266 #define LCNT_SRCCONNRATE 4 /* max-src-conn-rate */ 1267 #define LCNT_OVERLOAD_TABLE 5 /* entry added to overload table */ 1268 #define LCNT_OVERLOAD_FLUSH 6 /* state entries flushed */ 1269 #define LCNT_MAX 7 /* total+1 */ 1270 1271 #define LCNT_NAMES { \ 1272 "max states per rule", \ 1273 "max-src-states", \ 1274 "max-src-nodes", \ 1275 "max-src-conn", \ 1276 "max-src-conn-rate", \ 1277 "overload table insertion", \ 1278 "overload flush states", \ 1279 NULL \ 1280 } 1281 1282 /* UDP state enumeration */ 1283 #define PFUDPS_NO_TRAFFIC 0 1284 #define PFUDPS_SINGLE 1 1285 #define PFUDPS_MULTIPLE 2 1286 1287 #define PFUDPS_NSTATES 3 /* number of state levels */ 1288 1289 #define PFUDPS_NAMES { \ 1290 "NO_TRAFFIC", \ 1291 "SINGLE", \ 1292 "MULTIPLE", \ 1293 NULL \ 1294 } 1295 1296 /* Other protocol state enumeration */ 1297 #define PFOTHERS_NO_TRAFFIC 0 1298 #define PFOTHERS_SINGLE 1 1299 #define PFOTHERS_MULTIPLE 2 1300 1301 #define PFOTHERS_NSTATES 3 /* number of state levels */ 1302 1303 #define PFOTHERS_NAMES { \ 1304 "NO_TRAFFIC", \ 1305 "SINGLE", \ 1306 "MULTIPLE", \ 1307 NULL \ 1308 } 1309 1310 #define FCNT_STATE_SEARCH 0 1311 #define FCNT_STATE_INSERT 1 1312 #define FCNT_STATE_REMOVALS 2 1313 #define FCNT_MAX 3 1314 1315 #define SCNT_SRC_NODE_SEARCH 0 1316 #define SCNT_SRC_NODE_INSERT 1 1317 #define SCNT_SRC_NODE_REMOVALS 2 1318 #define SCNT_MAX 3 1319 1320 #define ACTION_SET(a, x) \ 1321 do { \ 1322 if ((a) != NULL) \ 1323 *(a) = (x); \ 1324 } while (0) 1325 1326 #define REASON_SET(a, x) \ 1327 do { \ 1328 if ((void *)(a) != NULL) { \ 1329 *(a) = (x); \ 1330 if (x < PFRES_MAX) \ 1331 pf_status.counters[x]++; \ 1332 } \ 1333 } while (0) 1334 1335 struct pf_status { 1336 u_int64_t counters[PFRES_MAX]; 1337 u_int64_t lcounters[LCNT_MAX]; /* limit counters */ 1338 u_int64_t fcounters[FCNT_MAX]; 1339 u_int64_t scounters[SCNT_MAX]; 1340 u_int64_t pcounters[2][2][3]; 1341 u_int64_t bcounters[2][2]; 1342 u_int64_t stateid; 1343 time_t since; 1344 u_int32_t running; 1345 u_int32_t states; 1346 u_int32_t src_nodes; 1347 u_int32_t debug; 1348 u_int32_t hostid; 1349 u_int32_t reass; /* reassembly */ 1350 char ifname[IFNAMSIZ]; 1351 u_int8_t pf_chksum[PF_MD5_DIGEST_LENGTH]; 1352 }; 1353 1354 #define PF_REASS_ENABLED 0x01 1355 #define PF_REASS_NODF 0x02 1356 1357 #define PF_PRIO_ZERO 0xff /* match "prio 0" packets */ 1358 1359 struct pf_queue_bwspec { 1360 u_int absolute; 1361 u_int percent; 1362 }; 1363 1364 struct pf_queue_scspec { 1365 struct pf_queue_bwspec m1; 1366 struct pf_queue_bwspec m2; 1367 u_int d; 1368 }; 1369 1370 struct pf_queuespec { 1371 TAILQ_ENTRY(pf_queuespec) entries; 1372 char qname[PF_QNAME_SIZE]; 1373 char parent[PF_QNAME_SIZE]; 1374 char ifname[IFNAMSIZ]; 1375 struct pf_queue_scspec realtime; 1376 struct pf_queue_scspec linkshare; 1377 struct pf_queue_scspec upperlimit; 1378 struct pfi_kif *kif; 1379 u_int flags; 1380 u_int qlimit; 1381 u_int32_t qid; 1382 u_int32_t parent_qid; 1383 }; 1384 1385 struct priq_opts { 1386 int flags; 1387 }; 1388 1389 struct hfsc_opts { 1390 /* real-time service curve */ 1391 u_int rtsc_m1; /* slope of the 1st segment in bps */ 1392 u_int rtsc_d; /* the x-projection of m1 in msec */ 1393 u_int rtsc_m2; /* slope of the 2nd segment in bps */ 1394 /* link-sharing service curve */ 1395 u_int lssc_m1; 1396 u_int lssc_d; 1397 u_int lssc_m2; 1398 /* upper-limit service curve */ 1399 u_int ulsc_m1; 1400 u_int ulsc_d; 1401 u_int ulsc_m2; 1402 int flags; 1403 }; 1404 1405 struct pf_tagname { 1406 TAILQ_ENTRY(pf_tagname) entries; 1407 char name[PF_TAG_NAME_SIZE]; 1408 u_int16_t tag; 1409 int ref; 1410 }; 1411 1412 struct pf_divert { 1413 struct pf_addr addr; 1414 u_int16_t port; 1415 u_int16_t rdomain; 1416 }; 1417 1418 /* Fragment entries reference mbuf clusters, so base the default on that. */ 1419 #define PFFRAG_FRENT_HIWAT (NMBCLUSTERS / 16) /* Number of entries */ 1420 #define PFFRAG_FRAG_HIWAT (NMBCLUSTERS / 32) /* Number of packets */ 1421 1422 #define PFR_KTABLE_HIWAT 1000 /* Number of tables */ 1423 #define PFR_KENTRY_HIWAT 200000 /* Number of table entries */ 1424 #define PFR_KENTRY_HIWAT_SMALL 100000 /* Number of entries for tiny hosts */ 1425 1426 /* 1427 * ioctl parameter structures 1428 */ 1429 1430 struct pfioc_rule { 1431 u_int32_t action; 1432 u_int32_t ticket; 1433 u_int32_t nr; 1434 char anchor[PATH_MAX]; 1435 char anchor_call[PATH_MAX]; 1436 struct pf_rule rule; 1437 }; 1438 1439 struct pfioc_natlook { 1440 struct pf_addr saddr; 1441 struct pf_addr daddr; 1442 struct pf_addr rsaddr; 1443 struct pf_addr rdaddr; 1444 u_int16_t rdomain; 1445 u_int16_t rrdomain; 1446 u_int16_t sport; 1447 u_int16_t dport; 1448 u_int16_t rsport; 1449 u_int16_t rdport; 1450 sa_family_t af; 1451 u_int8_t proto; 1452 u_int8_t direction; 1453 }; 1454 1455 struct pfioc_state { 1456 struct pfsync_state state; 1457 }; 1458 1459 struct pfioc_src_node_kill { 1460 sa_family_t psnk_af; 1461 struct pf_rule_addr psnk_src; 1462 struct pf_rule_addr psnk_dst; 1463 u_int psnk_killed; 1464 }; 1465 1466 struct pfioc_state_kill { 1467 struct pf_state_cmp psk_pfcmp; 1468 sa_family_t psk_af; 1469 int psk_proto; 1470 struct pf_rule_addr psk_src; 1471 struct pf_rule_addr psk_dst; 1472 char psk_ifname[IFNAMSIZ]; 1473 char psk_label[PF_RULE_LABEL_SIZE]; 1474 u_int psk_killed; 1475 u_int16_t psk_rdomain; 1476 }; 1477 1478 struct pfioc_states { 1479 int ps_len; 1480 union { 1481 caddr_t psu_buf; 1482 struct pfsync_state *psu_states; 1483 } ps_u; 1484 #define ps_buf ps_u.psu_buf 1485 #define ps_states ps_u.psu_states 1486 }; 1487 1488 struct pfioc_src_nodes { 1489 int psn_len; 1490 union { 1491 caddr_t psu_buf; 1492 struct pf_src_node *psu_src_nodes; 1493 } psn_u; 1494 #define psn_buf psn_u.psu_buf 1495 #define psn_src_nodes psn_u.psu_src_nodes 1496 }; 1497 1498 struct pfioc_tm { 1499 int timeout; 1500 int seconds; 1501 }; 1502 1503 struct pfioc_limit { 1504 int index; 1505 unsigned limit; 1506 }; 1507 1508 struct pfioc_ruleset { 1509 u_int32_t nr; 1510 char path[PATH_MAX]; 1511 char name[PF_ANCHOR_NAME_SIZE]; 1512 }; 1513 1514 struct pfioc_trans { 1515 int size; /* number of elements */ 1516 int esize; /* size of each element in bytes */ 1517 struct pfioc_trans_e { 1518 int type; 1519 char anchor[PATH_MAX]; 1520 u_int32_t ticket; 1521 } *array; 1522 }; 1523 1524 struct pfioc_queue { 1525 u_int32_t ticket; 1526 u_int nr; 1527 struct pf_queuespec queue; 1528 }; 1529 1530 struct pfioc_qstats { 1531 u_int32_t ticket; 1532 u_int32_t nr; 1533 struct pf_queuespec queue; 1534 void *buf; 1535 int nbytes; 1536 }; 1537 1538 #define PFR_FLAG_DUMMY 0x00000002 1539 #define PFR_FLAG_FEEDBACK 0x00000004 1540 #define PFR_FLAG_CLSTATS 0x00000008 1541 #define PFR_FLAG_ADDRSTOO 0x00000010 1542 #define PFR_FLAG_REPLACE 0x00000020 1543 #define PFR_FLAG_ALLRSETS 0x00000040 1544 #define PFR_FLAG_ALLMASK 0x0000007F 1545 #ifdef _KERNEL 1546 #define PFR_FLAG_USERIOCTL 0x10000000 1547 #endif 1548 1549 struct pfioc_table { 1550 struct pfr_table pfrio_table; 1551 void *pfrio_buffer; 1552 int pfrio_esize; 1553 int pfrio_size; 1554 int pfrio_size2; 1555 int pfrio_nadd; 1556 int pfrio_ndel; 1557 int pfrio_nchange; 1558 int pfrio_flags; 1559 u_int32_t pfrio_ticket; 1560 }; 1561 #define pfrio_exists pfrio_nadd 1562 #define pfrio_nzero pfrio_nadd 1563 #define pfrio_nmatch pfrio_nadd 1564 #define pfrio_naddr pfrio_size2 1565 #define pfrio_setflag pfrio_size2 1566 #define pfrio_clrflag pfrio_nadd 1567 1568 struct pfioc_iface { 1569 char pfiio_name[IFNAMSIZ]; 1570 void *pfiio_buffer; 1571 int pfiio_esize; 1572 int pfiio_size; 1573 int pfiio_nzero; 1574 int pfiio_flags; 1575 }; 1576 1577 1578 /* 1579 * ioctl operations 1580 */ 1581 1582 #define DIOCSTART _IO ('D', 1) 1583 #define DIOCSTOP _IO ('D', 2) 1584 #define DIOCADDRULE _IOWR('D', 4, struct pfioc_rule) 1585 #define DIOCGETRULES _IOWR('D', 6, struct pfioc_rule) 1586 #define DIOCGETRULE _IOWR('D', 7, struct pfioc_rule) 1587 /* XXX cut 8 - 17 */ 1588 #define DIOCCLRSTATES _IOWR('D', 18, struct pfioc_state_kill) 1589 #define DIOCGETSTATE _IOWR('D', 19, struct pfioc_state) 1590 #define DIOCSETSTATUSIF _IOWR('D', 20, struct pfioc_iface) 1591 #define DIOCGETSTATUS _IOWR('D', 21, struct pf_status) 1592 #define DIOCCLRSTATUS _IOWR('D', 22, struct pfioc_iface) 1593 #define DIOCNATLOOK _IOWR('D', 23, struct pfioc_natlook) 1594 #define DIOCSETDEBUG _IOWR('D', 24, u_int32_t) 1595 #define DIOCGETSTATES _IOWR('D', 25, struct pfioc_states) 1596 #define DIOCCHANGERULE _IOWR('D', 26, struct pfioc_rule) 1597 /* XXX cut 27 - 28 */ 1598 #define DIOCSETTIMEOUT _IOWR('D', 29, struct pfioc_tm) 1599 #define DIOCGETTIMEOUT _IOWR('D', 30, struct pfioc_tm) 1600 #define DIOCADDSTATE _IOWR('D', 37, struct pfioc_state) 1601 #define DIOCCLRRULECTRS _IO ('D', 38) 1602 #define DIOCGETLIMIT _IOWR('D', 39, struct pfioc_limit) 1603 #define DIOCSETLIMIT _IOWR('D', 40, struct pfioc_limit) 1604 #define DIOCKILLSTATES _IOWR('D', 41, struct pfioc_state_kill) 1605 /* XXX cut 42 - 57 */ 1606 #define DIOCGETRULESETS _IOWR('D', 58, struct pfioc_ruleset) 1607 #define DIOCGETRULESET _IOWR('D', 59, struct pfioc_ruleset) 1608 #define DIOCRCLRTABLES _IOWR('D', 60, struct pfioc_table) 1609 #define DIOCRADDTABLES _IOWR('D', 61, struct pfioc_table) 1610 #define DIOCRDELTABLES _IOWR('D', 62, struct pfioc_table) 1611 #define DIOCRGETTABLES _IOWR('D', 63, struct pfioc_table) 1612 #define DIOCRGETTSTATS _IOWR('D', 64, struct pfioc_table) 1613 #define DIOCRCLRTSTATS _IOWR('D', 65, struct pfioc_table) 1614 #define DIOCRCLRADDRS _IOWR('D', 66, struct pfioc_table) 1615 #define DIOCRADDADDRS _IOWR('D', 67, struct pfioc_table) 1616 #define DIOCRDELADDRS _IOWR('D', 68, struct pfioc_table) 1617 #define DIOCRSETADDRS _IOWR('D', 69, struct pfioc_table) 1618 #define DIOCRGETADDRS _IOWR('D', 70, struct pfioc_table) 1619 #define DIOCRGETASTATS _IOWR('D', 71, struct pfioc_table) 1620 #define DIOCRCLRASTATS _IOWR('D', 72, struct pfioc_table) 1621 #define DIOCRTSTADDRS _IOWR('D', 73, struct pfioc_table) 1622 #define DIOCRSETTFLAGS _IOWR('D', 74, struct pfioc_table) 1623 #define DIOCRINADEFINE _IOWR('D', 77, struct pfioc_table) 1624 #define DIOCOSFPFLUSH _IO('D', 78) 1625 #define DIOCOSFPADD _IOWR('D', 79, struct pf_osfp_ioctl) 1626 #define DIOCOSFPGET _IOWR('D', 80, struct pf_osfp_ioctl) 1627 #define DIOCXBEGIN _IOWR('D', 81, struct pfioc_trans) 1628 #define DIOCXCOMMIT _IOWR('D', 82, struct pfioc_trans) 1629 #define DIOCXROLLBACK _IOWR('D', 83, struct pfioc_trans) 1630 #define DIOCGETSRCNODES _IOWR('D', 84, struct pfioc_src_nodes) 1631 #define DIOCCLRSRCNODES _IO('D', 85) 1632 #define DIOCSETHOSTID _IOWR('D', 86, u_int32_t) 1633 #define DIOCIGETIFACES _IOWR('D', 87, struct pfioc_iface) 1634 #define DIOCSETIFFLAG _IOWR('D', 89, struct pfioc_iface) 1635 #define DIOCCLRIFFLAG _IOWR('D', 90, struct pfioc_iface) 1636 #define DIOCKILLSRCNODES _IOWR('D', 91, struct pfioc_src_node_kill) 1637 #define DIOCSETREASS _IOWR('D', 92, u_int32_t) 1638 #define DIOCADDQUEUE _IOWR('D', 93, struct pfioc_queue) 1639 #define DIOCGETQUEUES _IOWR('D', 94, struct pfioc_queue) 1640 #define DIOCGETQUEUE _IOWR('D', 95, struct pfioc_queue) 1641 #define DIOCGETQSTATS _IOWR('D', 96, struct pfioc_qstats) 1642 1643 #ifdef _KERNEL 1644 RB_HEAD(pf_src_tree, pf_src_node); 1645 RB_PROTOTYPE(pf_src_tree, pf_src_node, entry, pf_src_compare); 1646 extern struct pf_src_tree tree_src_tracking; 1647 1648 RB_HEAD(pf_state_tree_id, pf_state); 1649 RB_PROTOTYPE(pf_state_tree_id, pf_state, 1650 entry_id, pf_state_compare_id); 1651 extern struct pf_state_tree_id tree_id; 1652 extern struct pf_state_queue state_list; 1653 1654 TAILQ_HEAD(pf_queuehead, pf_queuespec); 1655 extern struct pf_queuehead pf_queues[2]; 1656 extern struct pf_queuehead *pf_queues_active, *pf_queues_inactive; 1657 1658 extern u_int32_t ticket_pabuf; 1659 extern struct pool pf_src_tree_pl, pf_sn_item_pl, pf_rule_pl; 1660 extern struct pool pf_state_pl, pf_state_key_pl, pf_state_item_pl, 1661 pf_rule_item_pl, pf_queue_pl; 1662 extern struct pool pf_state_scrub_pl; 1663 extern struct ifnet *sync_ifp; 1664 extern struct pf_rule pf_default_rule; 1665 1666 extern int pf_tbladdr_setup(struct pf_ruleset *, 1667 struct pf_addr_wrap *); 1668 extern void pf_tbladdr_remove(struct pf_addr_wrap *); 1669 extern void pf_tbladdr_copyout(struct pf_addr_wrap *); 1670 extern void pf_calc_skip_steps(struct pf_rulequeue *); 1671 extern void pf_purge_thread(void *); 1672 extern void pf_purge_expired_src_nodes(int); 1673 extern void pf_purge_expired_states(u_int32_t); 1674 extern void pf_purge_expired_rules(int); 1675 extern void pf_remove_state(struct pf_state *); 1676 extern void pf_remove_divert_state(struct pf_state_key *); 1677 extern void pf_free_state(struct pf_state *); 1678 extern int pf_state_insert(struct pfi_kif *, 1679 struct pf_state_key **, 1680 struct pf_state_key **, 1681 struct pf_state *); 1682 int pf_insert_src_node(struct pf_src_node **, 1683 struct pf_rule *, enum pf_sn_types, 1684 sa_family_t, struct pf_addr *, 1685 struct pf_addr *); 1686 void pf_remove_src_node(struct pf_src_node *); 1687 struct pf_src_node *pf_get_src_node(struct pf_state *, 1688 enum pf_sn_types); 1689 void pf_src_tree_remove_state(struct pf_state *); 1690 void pf_state_rm_src_node(struct pf_state *, 1691 struct pf_src_node *); 1692 1693 extern struct pf_state *pf_find_state_byid(struct pf_state_cmp *); 1694 extern struct pf_state *pf_find_state_all(struct pf_state_key_cmp *, 1695 u_int, int *); 1696 extern void pf_state_export(struct pfsync_state *, 1697 struct pf_state *); 1698 extern void pf_print_state(struct pf_state *); 1699 extern void pf_print_flags(u_int8_t); 1700 extern void pf_addrcpy(struct pf_addr *, struct pf_addr *, 1701 sa_family_t); 1702 void pf_rm_rule(struct pf_rulequeue *, 1703 struct pf_rule *); 1704 void pf_purge_rule(struct pf_rule *); 1705 struct pf_divert *pf_find_divert(struct mbuf *); 1706 int pf_setup_pdesc(struct pf_pdesc *, void *, 1707 sa_family_t, int, struct pfi_kif *, 1708 struct mbuf *, u_short *); 1709 1710 int pf_test(sa_family_t, int, struct ifnet *, struct mbuf **); 1711 1712 void pf_poolmask(struct pf_addr *, struct pf_addr*, 1713 struct pf_addr *, struct pf_addr *, sa_family_t); 1714 void pf_addr_inc(struct pf_addr *, sa_family_t); 1715 1716 void *pf_pull_hdr(struct mbuf *, int, void *, int, u_short *, u_short *, 1717 sa_family_t); 1718 #define PF_HI (true) 1719 #define PF_LO (!PF_HI) 1720 #define PF_ALGNMNT(off) (((off) % 2) == 0 ? PF_HI : PF_LO) 1721 int pf_patch_8(struct pf_pdesc *, u_int8_t *, u_int8_t, bool); 1722 int pf_patch_16(struct pf_pdesc *, u_int16_t *, u_int16_t); 1723 int pf_patch_16_unaligned(struct pf_pdesc *, void *, u_int16_t, bool); 1724 int pf_patch_32(struct pf_pdesc *, u_int32_t *, u_int32_t); 1725 int pf_patch_32_unaligned(struct pf_pdesc *, void *, u_int32_t, bool); 1726 int pflog_packet(struct pf_pdesc *, u_int8_t, struct pf_rule *, 1727 struct pf_rule *, struct pf_ruleset *, struct pf_rule *); 1728 void pf_send_deferred_syn(struct pf_state *); 1729 int pf_match_addr(u_int8_t, struct pf_addr *, struct pf_addr *, 1730 struct pf_addr *, sa_family_t); 1731 int pf_match_addr_range(struct pf_addr *, struct pf_addr *, 1732 struct pf_addr *, sa_family_t); 1733 int pf_match(u_int8_t, u_int32_t, u_int32_t, u_int32_t); 1734 int pf_match_port(u_int8_t, u_int16_t, u_int16_t, u_int16_t); 1735 int pf_match_uid(u_int8_t, uid_t, uid_t, uid_t); 1736 int pf_match_gid(u_int8_t, gid_t, gid_t, gid_t); 1737 1738 int pf_refragment6(struct mbuf **, struct m_tag *mtag, 1739 struct sockaddr_in6 *, struct ifnet *); 1740 void pf_normalize_init(void); 1741 int pf_normalize_ip(struct pf_pdesc *, u_short *); 1742 int pf_normalize_ip6(struct pf_pdesc *, u_short *); 1743 int pf_normalize_tcp(struct pf_pdesc *); 1744 void pf_normalize_tcp_cleanup(struct pf_state *); 1745 int pf_normalize_tcp_init(struct pf_pdesc *, struct pf_state_peer *); 1746 int pf_normalize_tcp_stateful(struct pf_pdesc *, u_short *, 1747 struct pf_state *, struct pf_state_peer *, struct pf_state_peer *, 1748 int *); 1749 int pf_normalize_mss(struct pf_pdesc *, u_int16_t); 1750 void pf_scrub(struct mbuf *, u_int16_t, sa_family_t, u_int8_t, u_int8_t); 1751 int32_t pf_state_expires(const struct pf_state *); 1752 void pf_purge_expired_fragments(void); 1753 int pf_routable(struct pf_addr *addr, sa_family_t af, struct pfi_kif *, 1754 int); 1755 int pf_rtlabel_match(struct pf_addr *, sa_family_t, struct pf_addr_wrap *, 1756 int); 1757 int pf_socket_lookup(struct pf_pdesc *); 1758 struct pf_state_key *pf_alloc_state_key(int); 1759 int pf_ouraddr(struct mbuf *); 1760 void pf_pkt_addr_changed(struct mbuf *); 1761 struct inpcb *pf_inp_lookup(struct mbuf *); 1762 void pf_inp_link(struct mbuf *, struct inpcb *); 1763 void pf_inp_unlink(struct inpcb *); 1764 int pf_state_key_attach(struct pf_state_key *, struct pf_state *, int); 1765 int pf_translate(struct pf_pdesc *, struct pf_addr *, u_int16_t, 1766 struct pf_addr *, u_int16_t, u_int16_t, int); 1767 int pf_translate_af(struct pf_pdesc *); 1768 void pf_route(struct mbuf **, struct pf_rule *, int, 1769 struct ifnet *, struct pf_state *); 1770 void pf_route6(struct mbuf **, struct pf_rule *, int, 1771 struct ifnet *, struct pf_state *); 1772 1773 void pfr_initialize(void); 1774 int pfr_match_addr(struct pfr_ktable *, struct pf_addr *, sa_family_t); 1775 void pfr_update_stats(struct pfr_ktable *, struct pf_addr *, 1776 struct pf_pdesc *, int, int); 1777 int pfr_pool_get(struct pf_pool *, struct pf_addr **, 1778 struct pf_addr **, sa_family_t); 1779 int pfr_states_increase(struct pfr_ktable *, struct pf_addr *, int); 1780 int pfr_states_decrease(struct pfr_ktable *, struct pf_addr *, int); 1781 struct pfr_kentry * 1782 pfr_kentry_byaddr(struct pfr_ktable *, struct pf_addr *, sa_family_t, 1783 int); 1784 void pfr_dynaddr_update(struct pfr_ktable *, struct pfi_dynaddr *); 1785 struct pfr_ktable * 1786 pfr_attach_table(struct pf_ruleset *, char *, int); 1787 void pfr_detach_table(struct pfr_ktable *); 1788 int pfr_clr_tables(struct pfr_table *, int *, int); 1789 int pfr_add_tables(struct pfr_table *, int, int *, int); 1790 int pfr_del_tables(struct pfr_table *, int, int *, int); 1791 int pfr_get_tables(struct pfr_table *, struct pfr_table *, int *, int); 1792 int pfr_get_tstats(struct pfr_table *, struct pfr_tstats *, int *, int); 1793 int pfr_clr_tstats(struct pfr_table *, int, int *, int); 1794 int pfr_set_tflags(struct pfr_table *, int, int, int, int *, int *, int); 1795 int pfr_clr_addrs(struct pfr_table *, int *, int); 1796 int pfr_insert_kentry(struct pfr_ktable *, struct pfr_addr *, time_t); 1797 int pfr_add_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1798 int); 1799 int pfr_del_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1800 int); 1801 int pfr_set_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1802 int *, int *, int *, int, u_int32_t); 1803 int pfr_get_addrs(struct pfr_table *, struct pfr_addr *, int *, int); 1804 int pfr_get_astats(struct pfr_table *, struct pfr_astats *, int *, int); 1805 int pfr_clr_astats(struct pfr_table *, struct pfr_addr *, int, int *, 1806 int); 1807 int pfr_tst_addrs(struct pfr_table *, struct pfr_addr *, int, int *, 1808 int); 1809 int pfr_ina_begin(struct pfr_table *, u_int32_t *, int *, int); 1810 int pfr_ina_rollback(struct pfr_table *, u_int32_t, int *, int); 1811 int pfr_ina_commit(struct pfr_table *, u_int32_t, int *, int *, int); 1812 int pfr_ina_define(struct pfr_table *, struct pfr_addr *, int, int *, 1813 int *, u_int32_t, int); 1814 1815 extern struct pfi_kif *pfi_all; 1816 1817 void pfi_initialize(void); 1818 struct pfi_kif *pfi_kif_find(const char *); 1819 struct pfi_kif *pfi_kif_get(const char *); 1820 void pfi_kif_ref(struct pfi_kif *, enum pfi_kif_refs); 1821 void pfi_kif_unref(struct pfi_kif *, enum pfi_kif_refs); 1822 int pfi_kif_match(struct pfi_kif *, struct pfi_kif *); 1823 void pfi_attach_ifnet(struct ifnet *); 1824 void pfi_detach_ifnet(struct ifnet *); 1825 void pfi_attach_ifgroup(struct ifg_group *); 1826 void pfi_detach_ifgroup(struct ifg_group *); 1827 void pfi_group_change(const char *); 1828 int pfi_match_addr(struct pfi_dynaddr *, struct pf_addr *, 1829 sa_family_t); 1830 int pfi_dynaddr_setup(struct pf_addr_wrap *, sa_family_t); 1831 void pfi_dynaddr_remove(struct pf_addr_wrap *); 1832 void pfi_dynaddr_copyout(struct pf_addr_wrap *); 1833 void pfi_update_status(const char *, struct pf_status *); 1834 int pfi_get_ifaces(const char *, struct pfi_kif *, int *); 1835 int pfi_set_flags(const char *, int); 1836 int pfi_clear_flags(const char *, int); 1837 void pfi_xcommit(void); 1838 1839 int pf_match_tag(struct mbuf *, struct pf_rule *, int *); 1840 u_int16_t pf_tagname2tag(char *, int); 1841 void pf_tag2tagname(u_int16_t, char *); 1842 void pf_tag_ref(u_int16_t); 1843 void pf_tag_unref(u_int16_t); 1844 void pf_tag_packet(struct mbuf *, int, int); 1845 int pf_addr_compare(struct pf_addr *, struct pf_addr *, 1846 sa_family_t); 1847 1848 extern struct pf_status pf_status; 1849 extern struct pool pf_frent_pl, pf_frag_pl; 1850 extern struct rwlock pf_consistency_lock; 1851 1852 struct pf_pool_limit { 1853 void *pp; 1854 unsigned limit; 1855 unsigned limit_new; 1856 }; 1857 extern struct pf_pool_limit pf_pool_limits[PF_LIMIT_MAX]; 1858 1859 #endif /* _KERNEL */ 1860 1861 extern struct pf_anchor_global pf_anchors; 1862 extern struct pf_anchor pf_main_anchor; 1863 #define pf_main_ruleset pf_main_anchor.ruleset 1864 1865 /* these ruleset functions can be linked into userland programs (pfctl) */ 1866 void pf_init_ruleset(struct pf_ruleset *); 1867 int pf_anchor_setup(struct pf_rule *, 1868 const struct pf_ruleset *, const char *); 1869 int pf_anchor_copyout(const struct pf_ruleset *, 1870 const struct pf_rule *, struct pfioc_rule *); 1871 void pf_anchor_remove(struct pf_rule *); 1872 void pf_remove_if_empty_ruleset(struct pf_ruleset *); 1873 struct pf_anchor *pf_find_anchor(const char *); 1874 struct pf_ruleset *pf_find_ruleset(const char *); 1875 struct pf_ruleset *pf_find_or_create_ruleset(const char *); 1876 void pf_rs_initialize(void); 1877 1878 #ifdef _KERNEL 1879 int pf_anchor_copyout(const struct pf_ruleset *, 1880 const struct pf_rule *, struct pfioc_rule *); 1881 void pf_anchor_remove(struct pf_rule *); 1882 1883 #endif /* _KERNEL */ 1884 1885 /* The fingerprint functions can be linked into userland programs (tcpdump) */ 1886 int pf_osfp_add(struct pf_osfp_ioctl *); 1887 #ifdef _KERNEL 1888 struct pf_osfp_enlist * 1889 pf_osfp_fingerprint(struct pf_pdesc *); 1890 #endif /* _KERNEL */ 1891 struct pf_osfp_enlist * 1892 pf_osfp_fingerprint_hdr(const struct ip *, const struct ip6_hdr *, 1893 const struct tcphdr *); 1894 void pf_osfp_flush(void); 1895 int pf_osfp_get(struct pf_osfp_ioctl *); 1896 void pf_osfp_initialize(void); 1897 int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t); 1898 struct pf_os_fingerprint * 1899 pf_osfp_validate(void); 1900 1901 #ifdef _KERNEL 1902 void pf_print_host(struct pf_addr *, u_int16_t, sa_family_t); 1903 1904 int pf_get_transaddr(struct pf_rule *, struct pf_pdesc *, 1905 struct pf_src_node **, struct pf_rule **); 1906 1907 int pf_map_addr(sa_family_t, struct pf_rule *, 1908 struct pf_addr *, struct pf_addr *, 1909 struct pf_addr *, struct pf_src_node **, 1910 struct pf_pool *, enum pf_sn_types); 1911 1912 int pf_postprocess_addr(struct pf_state *); 1913 1914 struct pf_state_key *pf_state_key_ref(struct pf_state_key *); 1915 void pf_state_key_unref(struct pf_state_key *); 1916 int pf_state_key_isvalid(struct pf_state_key *); 1917 void pf_pkt_unlink_state_key(struct mbuf *); 1918 void pf_pkt_state_key_ref(struct mbuf *); 1919 1920 #endif /* _KERNEL */ 1921 1922 #endif /* _NET_PFVAR_H_ */ 1923