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FreeBSD/Linux Kernel Cross Reference
sys/netinet/ip_fw.h
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1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2002-2009 Luigi Rizzo, Universita` di Pisa 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * 27 * $FreeBSD$ 28 */ 29 30 #ifndef _IPFW2_H 31 #define _IPFW2_H 32 33 /* 34 * The default rule number. By the design of ip_fw, the default rule 35 * is the last one, so its number can also serve as the highest number 36 * allowed for a rule. The ip_fw code relies on both meanings of this 37 * constant. 38 */ 39 #define IPFW_DEFAULT_RULE 65535 40 41 #define RESVD_SET 31 /*set for default and persistent rules*/ 42 #define IPFW_MAX_SETS 32 /* Number of sets supported by ipfw*/ 43 44 /* 45 * Compat values for old clients 46 */ 47 #ifndef _KERNEL 48 #define IPFW_TABLES_MAX 65535 49 #define IPFW_TABLES_DEFAULT 128 50 #endif 51 52 /* 53 * Most commands (queue, pipe, tag, untag, limit...) can have a 16-bit 54 * argument between 1 and 65534. The value 0 (IP_FW_TARG) is used 55 * to represent 'tablearg' value, e.g. indicate the use of a 'tablearg' 56 * result of the most recent table() lookup. 57 * Note that 16bit is only a historical limit, resulting from 58 * the use of a 16-bit fields for that value. In reality, we can have 59 * 2^32 pipes, queues, tag values and so on. 60 */ 61 #define IPFW_ARG_MIN 1 62 #define IPFW_ARG_MAX 65534 63 #define IP_FW_TABLEARG 65535 /* Compat value for old clients */ 64 #define IP_FW_TARG 0 /* Current tablearg value */ 65 #define IP_FW_NAT44_GLOBAL 65535 /* arg1 value for "nat global" */ 66 67 /* 68 * Number of entries in the call stack of the call/return commands. 69 * Call stack currently is an uint16_t array with rule numbers. 70 */ 71 #define IPFW_CALLSTACK_SIZE 16 72 73 /* IP_FW3 header/opcodes */ 74 typedef struct _ip_fw3_opheader { 75 uint16_t opcode; /* Operation opcode */ 76 uint16_t version; /* Opcode version */ 77 uint16_t reserved[2]; /* Align to 64-bit boundary */ 78 } ip_fw3_opheader; 79 80 /* IP_FW3 opcodes */ 81 #define IP_FW_TABLE_XADD 86 /* add entry */ 82 #define IP_FW_TABLE_XDEL 87 /* delete entry */ 83 #define IP_FW_TABLE_XGETSIZE 88 /* get table size (deprecated) */ 84 #define IP_FW_TABLE_XLIST 89 /* list table contents */ 85 #define IP_FW_TABLE_XDESTROY 90 /* destroy table */ 86 #define IP_FW_TABLES_XLIST 92 /* list all tables */ 87 #define IP_FW_TABLE_XINFO 93 /* request info for one table */ 88 #define IP_FW_TABLE_XFLUSH 94 /* flush table data */ 89 #define IP_FW_TABLE_XCREATE 95 /* create new table */ 90 #define IP_FW_TABLE_XMODIFY 96 /* modify existing table */ 91 #define IP_FW_XGET 97 /* Retrieve configuration */ 92 #define IP_FW_XADD 98 /* add rule */ 93 #define IP_FW_XDEL 99 /* del rule */ 94 #define IP_FW_XMOVE 100 /* move rules to different set */ 95 #define IP_FW_XZERO 101 /* clear accounting */ 96 #define IP_FW_XRESETLOG 102 /* zero rules logs */ 97 #define IP_FW_SET_SWAP 103 /* Swap between 2 sets */ 98 #define IP_FW_SET_MOVE 104 /* Move one set to another one */ 99 #define IP_FW_SET_ENABLE 105 /* Enable/disable sets */ 100 #define IP_FW_TABLE_XFIND 106 /* finds an entry */ 101 #define IP_FW_XIFLIST 107 /* list tracked interfaces */ 102 #define IP_FW_TABLES_ALIST 108 /* list table algorithms */ 103 #define IP_FW_TABLE_XSWAP 109 /* swap two tables */ 104 #define IP_FW_TABLE_VLIST 110 /* dump table value hash */ 105 106 #define IP_FW_NAT44_XCONFIG 111 /* Create/modify NAT44 instance */ 107 #define IP_FW_NAT44_DESTROY 112 /* Destroys NAT44 instance */ 108 #define IP_FW_NAT44_XGETCONFIG 113 /* Get NAT44 instance config */ 109 #define IP_FW_NAT44_LIST_NAT 114 /* List all NAT44 instances */ 110 #define IP_FW_NAT44_XGETLOG 115 /* Get log from NAT44 instance */ 111 112 #define IP_FW_DUMP_SOPTCODES 116 /* Dump available sopts/versions */ 113 #define IP_FW_DUMP_SRVOBJECTS 117 /* Dump existing named objects */ 114 115 #define IP_FW_NAT64STL_CREATE 130 /* Create stateless NAT64 instance */ 116 #define IP_FW_NAT64STL_DESTROY 131 /* Destroy stateless NAT64 instance */ 117 #define IP_FW_NAT64STL_CONFIG 132 /* Modify stateless NAT64 instance */ 118 #define IP_FW_NAT64STL_LIST 133 /* List stateless NAT64 instances */ 119 #define IP_FW_NAT64STL_STATS 134 /* Get NAT64STL instance statistics */ 120 #define IP_FW_NAT64STL_RESET_STATS 135 /* Reset NAT64STL instance statistics */ 121 122 #define IP_FW_NAT64LSN_CREATE 140 /* Create stateful NAT64 instance */ 123 #define IP_FW_NAT64LSN_DESTROY 141 /* Destroy stateful NAT64 instance */ 124 #define IP_FW_NAT64LSN_CONFIG 142 /* Modify stateful NAT64 instance */ 125 #define IP_FW_NAT64LSN_LIST 143 /* List stateful NAT64 instances */ 126 #define IP_FW_NAT64LSN_STATS 144 /* Get NAT64LSN instance statistics */ 127 #define IP_FW_NAT64LSN_LIST_STATES 145 /* Get stateful NAT64 states */ 128 #define IP_FW_NAT64LSN_RESET_STATS 146 /* Reset NAT64LSN instance statistics */ 129 130 #define IP_FW_NPTV6_CREATE 150 /* Create NPTv6 instance */ 131 #define IP_FW_NPTV6_DESTROY 151 /* Destroy NPTv6 instance */ 132 #define IP_FW_NPTV6_CONFIG 152 /* Modify NPTv6 instance */ 133 #define IP_FW_NPTV6_LIST 153 /* List NPTv6 instances */ 134 #define IP_FW_NPTV6_STATS 154 /* Get NPTv6 instance statistics */ 135 #define IP_FW_NPTV6_RESET_STATS 155 /* Reset NPTv6 instance statistics */ 136 137 #define IP_FW_NAT64CLAT_CREATE 160 /* Create clat NAT64 instance */ 138 #define IP_FW_NAT64CLAT_DESTROY 161 /* Destroy clat NAT64 instance */ 139 #define IP_FW_NAT64CLAT_CONFIG 162 /* Modify clat NAT64 instance */ 140 #define IP_FW_NAT64CLAT_LIST 163 /* List clat NAT64 instances */ 141 #define IP_FW_NAT64CLAT_STATS 164 /* Get NAT64CLAT instance statistics */ 142 #define IP_FW_NAT64CLAT_RESET_STATS 165 /* Reset NAT64CLAT instance statistics */ 143 144 /* 145 * The kernel representation of ipfw rules is made of a list of 146 * 'instructions' (for all practical purposes equivalent to BPF 147 * instructions), which specify which fields of the packet 148 * (or its metadata) should be analysed. 149 * 150 * Each instruction is stored in a structure which begins with 151 * "ipfw_insn", and can contain extra fields depending on the 152 * instruction type (listed below). 153 * Note that the code is written so that individual instructions 154 * have a size which is a multiple of 32 bits. This means that, if 155 * such structures contain pointers or other 64-bit entities, 156 * (there is just one instance now) they may end up unaligned on 157 * 64-bit architectures, so the must be handled with care. 158 * 159 * "enum ipfw_opcodes" are the opcodes supported. We can have up 160 * to 256 different opcodes. When adding new opcodes, they should 161 * be appended to the end of the opcode list before O_LAST_OPCODE, 162 * this will prevent the ABI from being broken, otherwise users 163 * will have to recompile ipfw(8) when they update the kernel. 164 */ 165 166 enum ipfw_opcodes { /* arguments (4 byte each) */ 167 O_NOP, 168 169 O_IP_SRC, /* u32 = IP */ 170 O_IP_SRC_MASK, /* ip = IP/mask */ 171 O_IP_SRC_ME, /* none */ 172 O_IP_SRC_SET, /* u32=base, arg1=len, bitmap */ 173 174 O_IP_DST, /* u32 = IP */ 175 O_IP_DST_MASK, /* ip = IP/mask */ 176 O_IP_DST_ME, /* none */ 177 O_IP_DST_SET, /* u32=base, arg1=len, bitmap */ 178 179 O_IP_SRCPORT, /* (n)port list:mask 4 byte ea */ 180 O_IP_DSTPORT, /* (n)port list:mask 4 byte ea */ 181 O_PROTO, /* arg1=protocol */ 182 183 O_MACADDR2, /* 2 mac addr:mask */ 184 O_MAC_TYPE, /* same as srcport */ 185 186 O_LAYER2, /* none */ 187 O_IN, /* none */ 188 O_FRAG, /* none */ 189 190 O_RECV, /* none */ 191 O_XMIT, /* none */ 192 O_VIA, /* none */ 193 194 O_IPOPT, /* arg1 = 2*u8 bitmap */ 195 O_IPLEN, /* arg1 = len */ 196 O_IPID, /* arg1 = id */ 197 198 O_IPTOS, /* arg1 = id */ 199 O_IPPRECEDENCE, /* arg1 = precedence << 5 */ 200 O_IPTTL, /* arg1 = TTL */ 201 202 O_IPVER, /* arg1 = version */ 203 O_UID, /* u32 = id */ 204 O_GID, /* u32 = id */ 205 O_ESTAB, /* none (tcp established) */ 206 O_TCPFLAGS, /* arg1 = 2*u8 bitmap */ 207 O_TCPWIN, /* arg1 = desired win */ 208 O_TCPSEQ, /* u32 = desired seq. */ 209 O_TCPACK, /* u32 = desired seq. */ 210 O_ICMPTYPE, /* u32 = icmp bitmap */ 211 O_TCPOPTS, /* arg1 = 2*u8 bitmap */ 212 213 O_VERREVPATH, /* none */ 214 O_VERSRCREACH, /* none */ 215 216 O_PROBE_STATE, /* none */ 217 O_KEEP_STATE, /* none */ 218 O_LIMIT, /* ipfw_insn_limit */ 219 O_LIMIT_PARENT, /* dyn_type, not an opcode. */ 220 221 /* 222 * These are really 'actions'. 223 */ 224 225 O_LOG, /* ipfw_insn_log */ 226 O_PROB, /* u32 = match probability */ 227 228 O_CHECK_STATE, /* none */ 229 O_ACCEPT, /* none */ 230 O_DENY, /* none */ 231 O_REJECT, /* arg1=icmp arg (same as deny) */ 232 O_COUNT, /* none */ 233 O_SKIPTO, /* arg1=next rule number */ 234 O_PIPE, /* arg1=pipe number */ 235 O_QUEUE, /* arg1=queue number */ 236 O_DIVERT, /* arg1=port number */ 237 O_TEE, /* arg1=port number */ 238 O_FORWARD_IP, /* fwd sockaddr */ 239 O_FORWARD_MAC, /* fwd mac */ 240 O_NAT, /* nope */ 241 O_REASS, /* none */ 242 243 /* 244 * More opcodes. 245 */ 246 O_IPSEC, /* has ipsec history */ 247 O_IP_SRC_LOOKUP, /* arg1=table number, u32=value */ 248 O_IP_DST_LOOKUP, /* arg1=table number, u32=value */ 249 O_ANTISPOOF, /* none */ 250 O_JAIL, /* u32 = id */ 251 O_ALTQ, /* u32 = altq classif. qid */ 252 O_DIVERTED, /* arg1=bitmap (1:loop, 2:out) */ 253 O_TCPDATALEN, /* arg1 = tcp data len */ 254 O_IP6_SRC, /* address without mask */ 255 O_IP6_SRC_ME, /* my addresses */ 256 O_IP6_SRC_MASK, /* address with the mask */ 257 O_IP6_DST, 258 O_IP6_DST_ME, 259 O_IP6_DST_MASK, 260 O_FLOW6ID, /* for flow id tag in the ipv6 pkt */ 261 O_ICMP6TYPE, /* icmp6 packet type filtering */ 262 O_EXT_HDR, /* filtering for ipv6 extension header */ 263 O_IP6, 264 265 /* 266 * actions for ng_ipfw 267 */ 268 O_NETGRAPH, /* send to ng_ipfw */ 269 O_NGTEE, /* copy to ng_ipfw */ 270 271 O_IP4, 272 273 O_UNREACH6, /* arg1=icmpv6 code arg (deny) */ 274 275 O_TAG, /* arg1=tag number */ 276 O_TAGGED, /* arg1=tag number */ 277 278 O_SETFIB, /* arg1=FIB number */ 279 O_FIB, /* arg1=FIB desired fib number */ 280 281 O_SOCKARG, /* socket argument */ 282 283 O_CALLRETURN, /* arg1=called rule number */ 284 285 O_FORWARD_IP6, /* fwd sockaddr_in6 */ 286 287 O_DSCP, /* 2 u32 = DSCP mask */ 288 O_SETDSCP, /* arg1=DSCP value */ 289 O_IP_FLOW_LOOKUP, /* arg1=table number, u32=value */ 290 291 O_EXTERNAL_ACTION, /* arg1=id of external action handler */ 292 O_EXTERNAL_INSTANCE, /* arg1=id of eaction handler instance */ 293 O_EXTERNAL_DATA, /* variable length data */ 294 295 O_SKIP_ACTION, /* none */ 296 O_TCPMSS, /* arg1=MSS value */ 297 298 O_MAC_SRC_LOOKUP, /* arg1=table number, u32=value */ 299 O_MAC_DST_LOOKUP, /* arg1=table number, u32=value */ 300 301 O_LAST_OPCODE /* not an opcode! */ 302 }; 303 304 /* 305 * Defines key types used by lookup instruction 306 */ 307 enum ipfw_table_lookup_type { 308 LOOKUP_DST_IP, 309 LOOKUP_SRC_IP, 310 LOOKUP_DST_PORT, 311 LOOKUP_SRC_PORT, 312 LOOKUP_UID, 313 LOOKUP_JAIL, 314 LOOKUP_DSCP, 315 LOOKUP_DST_MAC, 316 LOOKUP_SRC_MAC, 317 }; 318 319 /* 320 * The extension header are filtered only for presence using a bit 321 * vector with a flag for each header. 322 */ 323 #define EXT_FRAGMENT 0x1 324 #define EXT_HOPOPTS 0x2 325 #define EXT_ROUTING 0x4 326 #define EXT_AH 0x8 327 #define EXT_ESP 0x10 328 #define EXT_DSTOPTS 0x20 329 #define EXT_RTHDR0 0x40 330 #define EXT_RTHDR2 0x80 331 332 /* 333 * Template for instructions. 334 * 335 * ipfw_insn is used for all instructions which require no operands, 336 * a single 16-bit value (arg1), or a couple of 8-bit values. 337 * 338 * For other instructions which require different/larger arguments 339 * we have derived structures, ipfw_insn_*. 340 * 341 * The size of the instruction (in 32-bit words) is in the low 342 * 6 bits of "len". The 2 remaining bits are used to implement 343 * NOT and OR on individual instructions. Given a type, you can 344 * compute the length to be put in "len" using F_INSN_SIZE(t) 345 * 346 * F_NOT negates the match result of the instruction. 347 * 348 * F_OR is used to build or blocks. By default, instructions 349 * are evaluated as part of a logical AND. An "or" block 350 * { X or Y or Z } contains F_OR set in all but the last 351 * instruction of the block. A match will cause the code 352 * to skip past the last instruction of the block. 353 * 354 * NOTA BENE: in a couple of places we assume that 355 * sizeof(ipfw_insn) == sizeof(u_int32_t) 356 * this needs to be fixed. 357 * 358 */ 359 typedef struct _ipfw_insn { /* template for instructions */ 360 _Alignas(_Alignof(u_int32_t)) u_int8_t opcode; 361 u_int8_t len; /* number of 32-bit words */ 362 #define F_NOT 0x80 363 #define F_OR 0x40 364 #define F_LEN_MASK 0x3f 365 #define F_LEN(cmd) ((cmd)->len & F_LEN_MASK) 366 367 u_int16_t arg1; 368 } ipfw_insn; 369 370 /* 371 * The F_INSN_SIZE(type) computes the size, in 4-byte words, of 372 * a given type. 373 */ 374 #define F_INSN_SIZE(t) ((sizeof (t))/sizeof(u_int32_t)) 375 376 /* 377 * This is used to store an array of 16-bit entries (ports etc.) 378 */ 379 typedef struct _ipfw_insn_u16 { 380 ipfw_insn o; 381 u_int16_t ports[2]; /* there may be more */ 382 } ipfw_insn_u16; 383 384 /* 385 * This is used to store an array of 32-bit entries 386 * (uid, single IPv4 addresses etc.) 387 */ 388 typedef struct _ipfw_insn_u32 { 389 ipfw_insn o; 390 u_int32_t d[1]; /* one or more */ 391 } ipfw_insn_u32; 392 393 /* 394 * This is used to store IP addr-mask pairs. 395 */ 396 typedef struct _ipfw_insn_ip { 397 ipfw_insn o; 398 struct in_addr addr; 399 struct in_addr mask; 400 } ipfw_insn_ip; 401 402 /* 403 * This is used to forward to a given address (ip). 404 */ 405 typedef struct _ipfw_insn_sa { 406 ipfw_insn o; 407 struct sockaddr_in sa; 408 } ipfw_insn_sa; 409 410 /* 411 * This is used to forward to a given address (ipv6). 412 */ 413 typedef struct _ipfw_insn_sa6 { 414 ipfw_insn o; 415 struct sockaddr_in6 sa; 416 } ipfw_insn_sa6; 417 418 /* 419 * This is used for MAC addr-mask pairs. 420 */ 421 typedef struct _ipfw_insn_mac { 422 ipfw_insn o; 423 u_char addr[12]; /* dst[6] + src[6] */ 424 u_char mask[12]; /* dst[6] + src[6] */ 425 } ipfw_insn_mac; 426 427 /* 428 * This is used for interface match rules (recv xx, xmit xx). 429 */ 430 typedef struct _ipfw_insn_if { 431 ipfw_insn o; 432 union { 433 struct in_addr ip; 434 int glob; 435 uint16_t kidx; 436 } p; 437 char name[IFNAMSIZ]; 438 } ipfw_insn_if; 439 440 /* 441 * This is used for storing an altq queue id number. 442 */ 443 typedef struct _ipfw_insn_altq { 444 ipfw_insn o; 445 u_int32_t qid; 446 } ipfw_insn_altq; 447 448 /* 449 * This is used for limit rules. 450 */ 451 typedef struct _ipfw_insn_limit { 452 ipfw_insn o; 453 u_int8_t _pad; 454 u_int8_t limit_mask; /* combination of DYN_* below */ 455 #define DYN_SRC_ADDR 0x1 456 #define DYN_SRC_PORT 0x2 457 #define DYN_DST_ADDR 0x4 458 #define DYN_DST_PORT 0x8 459 460 u_int16_t conn_limit; 461 } ipfw_insn_limit; 462 463 /* 464 * This is used for log instructions. 465 */ 466 typedef struct _ipfw_insn_log { 467 ipfw_insn o; 468 u_int32_t max_log; /* how many do we log -- 0 = all */ 469 u_int32_t log_left; /* how many left to log */ 470 } ipfw_insn_log; 471 472 /* Legacy NAT structures, compat only */ 473 #ifndef _KERNEL 474 /* 475 * Data structures required by both ipfw(8) and ipfw(4) but not part of the 476 * management API are protected by IPFW_INTERNAL. 477 */ 478 #ifdef IPFW_INTERNAL 479 /* Server pool support (LSNAT). */ 480 struct cfg_spool { 481 LIST_ENTRY(cfg_spool) _next; /* chain of spool instances */ 482 struct in_addr addr; 483 u_short port; 484 }; 485 #endif 486 487 /* Redirect modes id. */ 488 #define REDIR_ADDR 0x01 489 #define REDIR_PORT 0x02 490 #define REDIR_PROTO 0x04 491 492 #ifdef IPFW_INTERNAL 493 /* Nat redirect configuration. */ 494 struct cfg_redir { 495 LIST_ENTRY(cfg_redir) _next; /* chain of redir instances */ 496 u_int16_t mode; /* type of redirect mode */ 497 struct in_addr laddr; /* local ip address */ 498 struct in_addr paddr; /* public ip address */ 499 struct in_addr raddr; /* remote ip address */ 500 u_short lport; /* local port */ 501 u_short pport; /* public port */ 502 u_short rport; /* remote port */ 503 u_short pport_cnt; /* number of public ports */ 504 u_short rport_cnt; /* number of remote ports */ 505 int proto; /* protocol: tcp/udp */ 506 struct alias_link **alink; 507 /* num of entry in spool chain */ 508 u_int16_t spool_cnt; 509 /* chain of spool instances */ 510 LIST_HEAD(spool_chain, cfg_spool) spool_chain; 511 }; 512 #endif 513 514 #ifdef IPFW_INTERNAL 515 /* Nat configuration data struct. */ 516 struct cfg_nat { 517 /* chain of nat instances */ 518 LIST_ENTRY(cfg_nat) _next; 519 int id; /* nat id */ 520 struct in_addr ip; /* nat ip address */ 521 char if_name[IF_NAMESIZE]; /* interface name */ 522 int mode; /* aliasing mode */ 523 struct libalias *lib; /* libalias instance */ 524 /* number of entry in spool chain */ 525 int redir_cnt; 526 /* chain of redir instances */ 527 LIST_HEAD(redir_chain, cfg_redir) redir_chain; 528 }; 529 #endif 530 531 #define SOF_NAT sizeof(struct cfg_nat) 532 #define SOF_REDIR sizeof(struct cfg_redir) 533 #define SOF_SPOOL sizeof(struct cfg_spool) 534 535 #endif /* ifndef _KERNEL */ 536 537 struct nat44_cfg_spool { 538 struct in_addr addr; 539 uint16_t port; 540 uint16_t spare; 541 }; 542 #define NAT44_REDIR_ADDR 0x01 543 #define NAT44_REDIR_PORT 0x02 544 #define NAT44_REDIR_PROTO 0x04 545 546 /* Nat redirect configuration. */ 547 struct nat44_cfg_redir { 548 struct in_addr laddr; /* local ip address */ 549 struct in_addr paddr; /* public ip address */ 550 struct in_addr raddr; /* remote ip address */ 551 uint16_t lport; /* local port */ 552 uint16_t pport; /* public port */ 553 uint16_t rport; /* remote port */ 554 uint16_t pport_cnt; /* number of public ports */ 555 uint16_t rport_cnt; /* number of remote ports */ 556 uint16_t mode; /* type of redirect mode */ 557 uint16_t spool_cnt; /* num of entry in spool chain */ 558 uint16_t spare; 559 uint32_t proto; /* protocol: tcp/udp */ 560 }; 561 562 /* Nat configuration data struct. */ 563 struct nat44_cfg_nat { 564 char name[64]; /* nat name */ 565 char if_name[64]; /* interface name */ 566 uint32_t size; /* structure size incl. redirs */ 567 struct in_addr ip; /* nat IPv4 address */ 568 uint32_t mode; /* aliasing mode */ 569 uint32_t redir_cnt; /* number of entry in spool chain */ 570 u_short alias_port_lo; /* low range for port aliasing */ 571 u_short alias_port_hi; /* high range for port aliasing */ 572 }; 573 574 /* Nat command. */ 575 typedef struct _ipfw_insn_nat { 576 ipfw_insn o; 577 struct cfg_nat *nat; 578 } ipfw_insn_nat; 579 580 /* Apply ipv6 mask on ipv6 addr */ 581 #define APPLY_MASK(addr,mask) do { \ 582 (addr)->__u6_addr.__u6_addr32[0] &= (mask)->__u6_addr.__u6_addr32[0]; \ 583 (addr)->__u6_addr.__u6_addr32[1] &= (mask)->__u6_addr.__u6_addr32[1]; \ 584 (addr)->__u6_addr.__u6_addr32[2] &= (mask)->__u6_addr.__u6_addr32[2]; \ 585 (addr)->__u6_addr.__u6_addr32[3] &= (mask)->__u6_addr.__u6_addr32[3]; \ 586 } while (0) 587 588 /* Structure for ipv6 */ 589 typedef struct _ipfw_insn_ip6 { 590 ipfw_insn o; 591 struct in6_addr addr6; 592 struct in6_addr mask6; 593 } ipfw_insn_ip6; 594 595 /* Used to support icmp6 types */ 596 typedef struct _ipfw_insn_icmp6 { 597 ipfw_insn o; 598 uint32_t d[7]; /* XXX This number si related to the netinet/icmp6.h 599 * define ICMP6_MAXTYPE 600 * as follows: n = ICMP6_MAXTYPE/32 + 1 601 * Actually is 203 602 */ 603 } ipfw_insn_icmp6; 604 605 /* 606 * Here we have the structure representing an ipfw rule. 607 * 608 * Layout: 609 * struct ip_fw_rule 610 * [ counter block, size = rule->cntr_len ] 611 * [ one or more instructions, size = rule->cmd_len * 4 ] 612 * 613 * It starts with a general area (with link fields). 614 * Counter block may be next (if rule->cntr_len > 0), 615 * followed by an array of one or more instructions, which the code 616 * accesses as an array of 32-bit values. rule->cmd_len represents 617 * the total instructions legth in u32 worrd, while act_ofs represents 618 * rule action offset in u32 words. 619 * 620 * When assembling instruction, remember the following: 621 * 622 * + if a rule has a "keep-state" (or "limit") option, then the 623 * first instruction (at r->cmd) MUST BE an O_PROBE_STATE 624 * + if a rule has a "log" option, then the first action 625 * (at ACTION_PTR(r)) MUST be O_LOG 626 * + if a rule has an "altq" option, it comes after "log" 627 * + if a rule has an O_TAG option, it comes after "log" and "altq" 628 * 629 * 630 * All structures (excluding instructions) are u64-aligned. 631 * Please keep this. 632 */ 633 634 struct ip_fw_rule { 635 uint16_t act_ofs; /* offset of action in 32-bit units */ 636 uint16_t cmd_len; /* # of 32-bit words in cmd */ 637 uint16_t spare; 638 uint8_t set; /* rule set (0..31) */ 639 uint8_t flags; /* rule flags */ 640 uint32_t rulenum; /* rule number */ 641 uint32_t id; /* rule id */ 642 643 ipfw_insn cmd[1]; /* storage for commands */ 644 }; 645 #define IPFW_RULE_NOOPT 0x01 /* Has no options in body */ 646 #define IPFW_RULE_JUSTOPTS 0x02 /* new format of rule body */ 647 648 /* Unaligned version */ 649 650 /* Base ipfw rule counter block. */ 651 struct ip_fw_bcounter { 652 uint16_t size; /* Size of counter block, bytes */ 653 uint8_t flags; /* flags for given block */ 654 uint8_t spare; 655 uint32_t timestamp; /* tv_sec of last match */ 656 uint64_t pcnt; /* Packet counter */ 657 uint64_t bcnt; /* Byte counter */ 658 }; 659 660 #ifndef _KERNEL 661 /* 662 * Legacy rule format 663 */ 664 struct ip_fw { 665 struct ip_fw *x_next; /* linked list of rules */ 666 struct ip_fw *next_rule; /* ptr to next [skipto] rule */ 667 /* 'next_rule' is used to pass up 'set_disable' status */ 668 669 uint16_t act_ofs; /* offset of action in 32-bit units */ 670 uint16_t cmd_len; /* # of 32-bit words in cmd */ 671 uint16_t rulenum; /* rule number */ 672 uint8_t set; /* rule set (0..31) */ 673 uint8_t _pad; /* padding */ 674 uint32_t id; /* rule id */ 675 676 /* These fields are present in all rules. */ 677 uint64_t pcnt; /* Packet counter */ 678 uint64_t bcnt; /* Byte counter */ 679 uint32_t timestamp; /* tv_sec of last match */ 680 681 ipfw_insn cmd[1]; /* storage for commands */ 682 }; 683 #endif 684 685 #define ACTION_PTR(rule) \ 686 (ipfw_insn *)( (u_int32_t *)((rule)->cmd) + ((rule)->act_ofs) ) 687 688 #define RULESIZE(rule) (sizeof(*(rule)) + (rule)->cmd_len * 4 - 4) 689 690 #if 1 // should be moved to in.h 691 /* 692 * This structure is used as a flow mask and a flow id for various 693 * parts of the code. 694 * addr_type is used in userland and kernel to mark the address type. 695 * fib is used in the kernel to record the fib in use. 696 * _flags is used in the kernel to store tcp flags for dynamic rules. 697 */ 698 struct ipfw_flow_id { 699 uint32_t dst_ip; 700 uint32_t src_ip; 701 uint16_t dst_port; 702 uint16_t src_port; 703 uint8_t fib; /* XXX: must be uint16_t */ 704 uint8_t proto; 705 uint8_t _flags; /* protocol-specific flags */ 706 uint8_t addr_type; /* 4=ip4, 6=ip6, 1=ether ? */ 707 struct in6_addr dst_ip6; 708 struct in6_addr src_ip6; 709 uint32_t flow_id6; 710 uint32_t extra; /* queue/pipe or frag_id */ 711 }; 712 #endif 713 714 #define IS_IP4_FLOW_ID(id) ((id)->addr_type == 4) 715 #define IS_IP6_FLOW_ID(id) ((id)->addr_type == 6) 716 717 /* 718 * Dynamic ipfw rule. 719 */ 720 typedef struct _ipfw_dyn_rule ipfw_dyn_rule; 721 722 struct _ipfw_dyn_rule { 723 ipfw_dyn_rule *next; /* linked list of rules. */ 724 struct ip_fw *rule; /* pointer to rule */ 725 /* 'rule' is used to pass up the rule number (from the parent) */ 726 727 ipfw_dyn_rule *parent; /* pointer to parent rule */ 728 u_int64_t pcnt; /* packet match counter */ 729 u_int64_t bcnt; /* byte match counter */ 730 struct ipfw_flow_id id; /* (masked) flow id */ 731 u_int32_t expire; /* expire time */ 732 u_int32_t bucket; /* which bucket in hash table */ 733 u_int32_t state; /* state of this rule (typically a 734 * combination of TCP flags) 735 */ 736 #define IPFW_DYN_ORPHANED 0x40000 /* state's parent rule was deleted */ 737 u_int32_t ack_fwd; /* most recent ACKs in forward */ 738 u_int32_t ack_rev; /* and reverse directions (used */ 739 /* to generate keepalives) */ 740 u_int16_t dyn_type; /* rule type */ 741 u_int16_t count; /* refcount */ 742 u_int16_t kidx; /* index of named object */ 743 } __packed __aligned(8); 744 745 /* 746 * Definitions for IP option names. 747 */ 748 #define IP_FW_IPOPT_LSRR 0x01 749 #define IP_FW_IPOPT_SSRR 0x02 750 #define IP_FW_IPOPT_RR 0x04 751 #define IP_FW_IPOPT_TS 0x08 752 753 /* 754 * Definitions for TCP option names. 755 */ 756 #define IP_FW_TCPOPT_MSS 0x01 757 #define IP_FW_TCPOPT_WINDOW 0x02 758 #define IP_FW_TCPOPT_SACK 0x04 759 #define IP_FW_TCPOPT_TS 0x08 760 #define IP_FW_TCPOPT_CC 0x10 761 762 #define ICMP_REJECT_RST 0x100 /* fake ICMP code (send a TCP RST) */ 763 #define ICMP6_UNREACH_RST 0x100 /* fake ICMPv6 code (send a TCP RST) */ 764 #define ICMP_REJECT_ABORT 0x101 /* fake ICMP code (send an SCTP ABORT) */ 765 #define ICMP6_UNREACH_ABORT 0x101 /* fake ICMPv6 code (send an SCTP ABORT) */ 766 767 /* 768 * These are used for lookup tables. 769 */ 770 771 #define IPFW_TABLE_ADDR 1 /* Table for holding IPv4/IPv6 prefixes */ 772 #define IPFW_TABLE_INTERFACE 2 /* Table for holding interface names */ 773 #define IPFW_TABLE_NUMBER 3 /* Table for holding ports/uid/gid/etc */ 774 #define IPFW_TABLE_FLOW 4 /* Table for holding flow data */ 775 #define IPFW_TABLE_MAC 5 /* Table for holding mac address prefixes */ 776 #define IPFW_TABLE_MAXTYPE 5 /* Maximum valid number */ 777 778 #define IPFW_TABLE_CIDR IPFW_TABLE_ADDR /* compat */ 779 780 /* Value types */ 781 #define IPFW_VTYPE_LEGACY 0xFFFFFFFF /* All data is filled in */ 782 #define IPFW_VTYPE_SKIPTO 0x00000001 /* skipto/call/callreturn */ 783 #define IPFW_VTYPE_PIPE 0x00000002 /* pipe/queue */ 784 #define IPFW_VTYPE_FIB 0x00000004 /* setfib */ 785 #define IPFW_VTYPE_NAT 0x00000008 /* nat */ 786 #define IPFW_VTYPE_DSCP 0x00000010 /* dscp */ 787 #define IPFW_VTYPE_TAG 0x00000020 /* tag/untag */ 788 #define IPFW_VTYPE_DIVERT 0x00000040 /* divert/tee */ 789 #define IPFW_VTYPE_NETGRAPH 0x00000080 /* netgraph/ngtee */ 790 #define IPFW_VTYPE_LIMIT 0x00000100 /* limit */ 791 #define IPFW_VTYPE_NH4 0x00000200 /* IPv4 nexthop */ 792 #define IPFW_VTYPE_NH6 0x00000400 /* IPv6 nexthop */ 793 794 /* MAC/InfiniBand/etc address length */ 795 #define IPFW_MAX_L2_ADDR_LEN 20 796 797 typedef struct _ipfw_table_entry { 798 in_addr_t addr; /* network address */ 799 u_int32_t value; /* value */ 800 u_int16_t tbl; /* table number */ 801 u_int8_t masklen; /* mask length */ 802 } ipfw_table_entry; 803 804 typedef struct _ipfw_table_xentry { 805 uint16_t len; /* Total entry length */ 806 uint8_t type; /* entry type */ 807 uint8_t masklen; /* mask length */ 808 uint16_t tbl; /* table number */ 809 uint16_t flags; /* record flags */ 810 uint32_t value; /* value */ 811 union { 812 /* Longest field needs to be aligned by 4-byte boundary */ 813 struct in6_addr addr6; /* IPv6 address */ 814 char iface[IF_NAMESIZE]; /* interface name */ 815 } k; 816 } ipfw_table_xentry; 817 #define IPFW_TCF_INET 0x01 /* CIDR flags: IPv4 record */ 818 819 typedef struct _ipfw_table { 820 u_int32_t size; /* size of entries in bytes */ 821 u_int32_t cnt; /* # of entries */ 822 u_int16_t tbl; /* table number */ 823 ipfw_table_entry ent[0]; /* entries */ 824 } ipfw_table; 825 826 typedef struct _ipfw_xtable { 827 ip_fw3_opheader opheader; /* IP_FW3 opcode */ 828 uint32_t size; /* size of entries in bytes */ 829 uint32_t cnt; /* # of entries */ 830 uint16_t tbl; /* table number */ 831 uint8_t type; /* table type */ 832 ipfw_table_xentry xent[0]; /* entries */ 833 } ipfw_xtable; 834 835 typedef struct _ipfw_obj_tlv { 836 uint16_t type; /* TLV type */ 837 uint16_t flags; /* TLV-specific flags */ 838 uint32_t length; /* Total length, aligned to u64 */ 839 } ipfw_obj_tlv; 840 #define IPFW_TLV_TBL_NAME 1 841 #define IPFW_TLV_TBLNAME_LIST 2 842 #define IPFW_TLV_RULE_LIST 3 843 #define IPFW_TLV_DYNSTATE_LIST 4 844 #define IPFW_TLV_TBL_ENT 5 845 #define IPFW_TLV_DYN_ENT 6 846 #define IPFW_TLV_RULE_ENT 7 847 #define IPFW_TLV_TBLENT_LIST 8 848 #define IPFW_TLV_RANGE 9 849 #define IPFW_TLV_EACTION 10 850 #define IPFW_TLV_COUNTERS 11 851 #define IPFW_TLV_OBJDATA 12 852 #define IPFW_TLV_STATE_NAME 14 853 854 #define IPFW_TLV_EACTION_BASE 1000 855 #define IPFW_TLV_EACTION_NAME(arg) (IPFW_TLV_EACTION_BASE + (arg)) 856 857 typedef struct _ipfw_obj_data { 858 ipfw_obj_tlv head; 859 void *data[0]; 860 } ipfw_obj_data; 861 862 /* Object name TLV */ 863 typedef struct _ipfw_obj_ntlv { 864 ipfw_obj_tlv head; /* TLV header */ 865 uint16_t idx; /* Name index */ 866 uint8_t set; /* set, if applicable */ 867 uint8_t type; /* object type, if applicable */ 868 uint32_t spare; /* unused */ 869 char name[64]; /* Null-terminated name */ 870 } ipfw_obj_ntlv; 871 872 /* IPv4/IPv6 L4 flow description */ 873 struct tflow_entry { 874 uint8_t af; 875 uint8_t proto; 876 uint16_t spare; 877 uint16_t sport; 878 uint16_t dport; 879 union { 880 struct { 881 struct in_addr sip; 882 struct in_addr dip; 883 } a4; 884 struct { 885 struct in6_addr sip6; 886 struct in6_addr dip6; 887 } a6; 888 } a; 889 }; 890 891 typedef struct _ipfw_table_value { 892 uint32_t tag; /* O_TAG/O_TAGGED */ 893 uint32_t pipe; /* O_PIPE/O_QUEUE */ 894 uint16_t divert; /* O_DIVERT/O_TEE */ 895 uint16_t skipto; /* skipto, CALLRET */ 896 uint32_t netgraph; /* O_NETGRAPH/O_NGTEE */ 897 uint32_t fib; /* O_SETFIB */ 898 uint32_t nat; /* O_NAT */ 899 uint32_t nh4; 900 uint8_t dscp; 901 uint8_t spare0; 902 uint16_t spare1; 903 struct in6_addr nh6; 904 uint32_t limit; /* O_LIMIT */ 905 uint32_t zoneid; /* scope zone id for nh6 */ 906 uint64_t reserved; 907 } ipfw_table_value; 908 909 /* Table entry TLV */ 910 typedef struct _ipfw_obj_tentry { 911 ipfw_obj_tlv head; /* TLV header */ 912 uint8_t subtype; /* subtype (IPv4,IPv6) */ 913 uint8_t masklen; /* mask length */ 914 uint8_t result; /* request result */ 915 uint8_t spare0; 916 uint16_t idx; /* Table name index */ 917 uint16_t spare1; 918 union { 919 /* Longest field needs to be aligned by 8-byte boundary */ 920 struct in_addr addr; /* IPv4 address */ 921 uint32_t key; /* uid/gid/port */ 922 struct in6_addr addr6; /* IPv6 address */ 923 char iface[IF_NAMESIZE]; /* interface name */ 924 u_char mac[IPFW_MAX_L2_ADDR_LEN]; /* MAC address */ 925 struct tflow_entry flow; 926 } k; 927 union { 928 ipfw_table_value value; /* value data */ 929 uint32_t kidx; /* value kernel index */ 930 } v; 931 } ipfw_obj_tentry; 932 #define IPFW_TF_UPDATE 0x01 /* Update record if exists */ 933 /* Container TLV */ 934 #define IPFW_CTF_ATOMIC 0x01 /* Perform atomic operation */ 935 /* Operation results */ 936 #define IPFW_TR_IGNORED 0 /* Entry was ignored (rollback) */ 937 #define IPFW_TR_ADDED 1 /* Entry was successfully added */ 938 #define IPFW_TR_UPDATED 2 /* Entry was successfully updated*/ 939 #define IPFW_TR_DELETED 3 /* Entry was successfully deleted*/ 940 #define IPFW_TR_LIMIT 4 /* Entry was ignored (limit) */ 941 #define IPFW_TR_NOTFOUND 5 /* Entry was not found */ 942 #define IPFW_TR_EXISTS 6 /* Entry already exists */ 943 #define IPFW_TR_ERROR 7 /* Request has failed (unknown) */ 944 945 typedef struct _ipfw_obj_dyntlv { 946 ipfw_obj_tlv head; 947 ipfw_dyn_rule state; 948 } ipfw_obj_dyntlv; 949 #define IPFW_DF_LAST 0x01 /* Last state in chain */ 950 951 /* Containter TLVs */ 952 typedef struct _ipfw_obj_ctlv { 953 ipfw_obj_tlv head; /* TLV header */ 954 uint32_t count; /* Number of sub-TLVs */ 955 uint16_t objsize; /* Single object size */ 956 uint8_t version; /* TLV version */ 957 uint8_t flags; /* TLV-specific flags */ 958 } ipfw_obj_ctlv; 959 960 /* Range TLV */ 961 typedef struct _ipfw_range_tlv { 962 ipfw_obj_tlv head; /* TLV header */ 963 uint32_t flags; /* Range flags */ 964 uint16_t start_rule; /* Range start */ 965 uint16_t end_rule; /* Range end */ 966 uint32_t set; /* Range set to match */ 967 uint32_t new_set; /* New set to move/swap to */ 968 } ipfw_range_tlv; 969 #define IPFW_RCFLAG_RANGE 0x01 /* rule range is set */ 970 #define IPFW_RCFLAG_ALL 0x02 /* match ALL rules */ 971 #define IPFW_RCFLAG_SET 0x04 /* match rules in given set */ 972 #define IPFW_RCFLAG_DYNAMIC 0x08 /* match only dynamic states */ 973 /* User-settable flags */ 974 #define IPFW_RCFLAG_USER (IPFW_RCFLAG_RANGE | IPFW_RCFLAG_ALL | \ 975 IPFW_RCFLAG_SET | IPFW_RCFLAG_DYNAMIC) 976 /* Internally used flags */ 977 #define IPFW_RCFLAG_DEFAULT 0x0100 /* Do not skip defaul rule */ 978 979 typedef struct _ipfw_ta_tinfo { 980 uint32_t flags; /* Format flags */ 981 uint32_t spare; 982 uint8_t taclass4; /* algorithm class */ 983 uint8_t spare4; 984 uint16_t itemsize4; /* item size in runtime */ 985 uint32_t size4; /* runtime structure size */ 986 uint32_t count4; /* number of items in runtime */ 987 uint8_t taclass6; /* algorithm class */ 988 uint8_t spare6; 989 uint16_t itemsize6; /* item size in runtime */ 990 uint32_t size6; /* runtime structure size */ 991 uint32_t count6; /* number of items in runtime */ 992 } ipfw_ta_tinfo; 993 #define IPFW_TACLASS_HASH 1 /* algo is based on hash */ 994 #define IPFW_TACLASS_ARRAY 2 /* algo is based on array */ 995 #define IPFW_TACLASS_RADIX 3 /* algo is based on radix tree */ 996 997 #define IPFW_TATFLAGS_DATA 0x0001 /* Has data filled in */ 998 #define IPFW_TATFLAGS_AFDATA 0x0002 /* Separate data per AF */ 999 #define IPFW_TATFLAGS_AFITEM 0x0004 /* diff. items per AF */ 1000 1001 typedef struct _ipfw_xtable_info { 1002 uint8_t type; /* table type (addr,iface,..) */ 1003 uint8_t tflags; /* type flags */ 1004 uint16_t mflags; /* modification flags */ 1005 uint16_t flags; /* generic table flags */ 1006 uint16_t spare[3]; 1007 uint32_t vmask; /* bitmask with value types */ 1008 uint32_t set; /* set table is in */ 1009 uint32_t kidx; /* kernel index */ 1010 uint32_t refcnt; /* number of references */ 1011 uint32_t count; /* Number of records */ 1012 uint32_t size; /* Total size of records(export)*/ 1013 uint32_t limit; /* Max number of records */ 1014 char tablename[64]; /* table name */ 1015 char algoname[64]; /* algorithm name */ 1016 ipfw_ta_tinfo ta_info; /* additional algo stats */ 1017 } ipfw_xtable_info; 1018 /* Generic table flags */ 1019 #define IPFW_TGFLAGS_LOCKED 0x01 /* Tables is locked from changes*/ 1020 /* Table type-specific flags */ 1021 #define IPFW_TFFLAG_SRCIP 0x01 1022 #define IPFW_TFFLAG_DSTIP 0x02 1023 #define IPFW_TFFLAG_SRCPORT 0x04 1024 #define IPFW_TFFLAG_DSTPORT 0x08 1025 #define IPFW_TFFLAG_PROTO 0x10 1026 /* Table modification flags */ 1027 #define IPFW_TMFLAGS_LIMIT 0x0002 /* Change limit value */ 1028 #define IPFW_TMFLAGS_LOCK 0x0004 /* Change table lock state */ 1029 1030 typedef struct _ipfw_iface_info { 1031 char ifname[64]; /* interface name */ 1032 uint32_t ifindex; /* interface index */ 1033 uint32_t flags; /* flags */ 1034 uint32_t refcnt; /* number of references */ 1035 uint32_t gencnt; /* number of changes */ 1036 uint64_t spare; 1037 } ipfw_iface_info; 1038 #define IPFW_IFFLAG_RESOLVED 0x01 /* Interface exists */ 1039 1040 typedef struct _ipfw_ta_info { 1041 char algoname[64]; /* algorithm name */ 1042 uint32_t type; /* lookup type */ 1043 uint32_t flags; 1044 uint32_t refcnt; 1045 uint32_t spare0; 1046 uint64_t spare1; 1047 } ipfw_ta_info; 1048 1049 typedef struct _ipfw_obj_header { 1050 ip_fw3_opheader opheader; /* IP_FW3 opcode */ 1051 uint32_t spare; 1052 uint16_t idx; /* object name index */ 1053 uint8_t objtype; /* object type */ 1054 uint8_t objsubtype; /* object subtype */ 1055 ipfw_obj_ntlv ntlv; /* object name tlv */ 1056 } ipfw_obj_header; 1057 1058 typedef struct _ipfw_obj_lheader { 1059 ip_fw3_opheader opheader; /* IP_FW3 opcode */ 1060 uint32_t set_mask; /* disabled set mask */ 1061 uint32_t count; /* Total objects count */ 1062 uint32_t size; /* Total size (incl. header) */ 1063 uint32_t objsize; /* Size of one object */ 1064 } ipfw_obj_lheader; 1065 1066 #define IPFW_CFG_GET_STATIC 0x01 1067 #define IPFW_CFG_GET_STATES 0x02 1068 #define IPFW_CFG_GET_COUNTERS 0x04 1069 typedef struct _ipfw_cfg_lheader { 1070 ip_fw3_opheader opheader; /* IP_FW3 opcode */ 1071 uint32_t set_mask; /* enabled set mask */ 1072 uint32_t spare; 1073 uint32_t flags; /* Request flags */ 1074 uint32_t size; /* neded buffer size */ 1075 uint32_t start_rule; 1076 uint32_t end_rule; 1077 } ipfw_cfg_lheader; 1078 1079 typedef struct _ipfw_range_header { 1080 ip_fw3_opheader opheader; /* IP_FW3 opcode */ 1081 ipfw_range_tlv range; 1082 } ipfw_range_header; 1083 1084 typedef struct _ipfw_sopt_info { 1085 uint16_t opcode; 1086 uint8_t version; 1087 uint8_t dir; 1088 uint8_t spare; 1089 uint64_t refcnt; 1090 } ipfw_sopt_info; 1091 1092 #endif /* _IPFW2_H */
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