2 * Copyright (c) 2002-2009 Luigi Rizzo, Universita` di Pisa
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * The default rule number. By the design of ip_fw, the default rule
33 * is the last one, so its number can also serve as the highest number
34 * allowed for a rule. The ip_fw code relies on both meanings of this
37 #define IPFW_DEFAULT_RULE 65535
40 * Number of sets supported by ipfw
42 #define IPFW_MAX_SETS 32
45 * Default number of ipfw tables.
47 #define IPFW_TABLES_MAX 65535
48 #define IPFW_TABLES_DEFAULT 128
51 * Most commands (queue, pipe, tag, untag, limit...) can have a 16-bit
52 * argument between 1 and 65534. The value 0 is unused, the value
53 * 65535 (IP_FW_TABLEARG) is used to represent 'tablearg', i.e. the
54 * can be 1..65534, or 65535 to indicate the use of a 'tablearg'
55 * result of the most recent table() lookup.
56 * Note that 16bit is only a historical limit, resulting from
57 * the use of a 16-bit fields for that value. In reality, we can have
58 * 2^32 pipes, queues, tag values and so on, and use 0 as a tablearg.
60 #define IPFW_ARG_MIN 1
61 #define IPFW_ARG_MAX 65534
62 #define IP_FW_TABLEARG 65535 /* XXX should use 0 */
65 * Number of entries in the call stack of the call/return commands.
66 * Call stack currently is an uint16_t array with rule numbers.
68 #define IPFW_CALLSTACK_SIZE 16
70 /* IP_FW3 header/opcodes */
71 typedef struct _ip_fw3_opheader {
72 uint16_t opcode; /* Operation opcode */
73 uint16_t version; /* Opcode version */
74 uint16_t reserved[2]; /* Align to 64-bit boundary */
78 /* IPFW extented tables support */
79 #define IP_FW_TABLE_XADD 86 /* add entry */
80 #define IP_FW_TABLE_XDEL 87 /* delete entry */
81 #define IP_FW_TABLE_XGETSIZE 88 /* get table size (deprecated) */
82 #define IP_FW_TABLE_XLIST 89 /* list table contents */
83 #define IP_FW_TABLE_XDESTROY 90 /* destroy table */
84 #define IP_FW_TABLES_XGETSIZE 91 /* get size for tables list */
85 #define IP_FW_TABLES_XLIST 92 /* list all tables */
86 #define IP_FW_TABLE_XINFO 93 /* request info for one table */
87 #define IP_FW_TABLE_XFLUSH 94 /* flush table data */
88 #define IP_FW_TABLE_XCREATE 95 /* create new table */
89 #define IP_FW_TABLE_XMODIFY 96 /* modify existing table */
90 #define IP_FW_XGET 97 /* Retrieve configuration */
91 #define IP_FW_XADD 98 /* add entry */
96 * IP_FW_TABLE_XLIST(ver 1): Dumps all table data
97 * Request(getsockopt): [ ipfw_obj_lheader ], size = ipfw_xtable_info.size
98 * Reply: [ ipfw_obj_lheader ipfw_xtable_info ipfw_table_xentry x N ]
100 * IP_FW_TABLE_XDESTROY: Destroys given table
101 * Request(setsockopt): [ ipfw_obj_header ]
103 * IP_FW_TABLES_XGETSIZE: Get buffer size needed to list info for all tables.
104 * Request(getsockopt): [ empty ], size = sizeof(ipfw_obj_lheader)
105 * Reply: [ ipfw_obj_lheader ]
107 * IP_FW_TABLES_XLIST: Lists all tables currently available in kernel.
108 * Request(getsockopt): [ ipfw_obj_lheader ], size = ipfw_obj_lheader.size
109 * Reply: [ ipfw_obj_lheader ipfw_xtable_info x N ]
111 * IP_FW_TABLE_XINFO: Store table info to buffer.
112 * Request(getsockopt): [ ipfw_obj_header ipfw_xtable_info(empty)]
113 * Reply: [ ipfw_obj_header ipfw_xtable_info ]
115 * IP_FW_TABLE_XFLUSH: Removes all data from given table leaving type etc..
116 * Request(setsockopt): [ ipfw_obj_header ]
120 * The kernel representation of ipfw rules is made of a list of
121 * 'instructions' (for all practical purposes equivalent to BPF
122 * instructions), which specify which fields of the packet
123 * (or its metadata) should be analysed.
125 * Each instruction is stored in a structure which begins with
126 * "ipfw_insn", and can contain extra fields depending on the
127 * instruction type (listed below).
128 * Note that the code is written so that individual instructions
129 * have a size which is a multiple of 32 bits. This means that, if
130 * such structures contain pointers or other 64-bit entities,
131 * (there is just one instance now) they may end up unaligned on
132 * 64-bit architectures, so the must be handled with care.
134 * "enum ipfw_opcodes" are the opcodes supported. We can have up
135 * to 256 different opcodes. When adding new opcodes, they should
136 * be appended to the end of the opcode list before O_LAST_OPCODE,
137 * this will prevent the ABI from being broken, otherwise users
138 * will have to recompile ipfw(8) when they update the kernel.
141 enum ipfw_opcodes { /* arguments (4 byte each) */
144 O_IP_SRC, /* u32 = IP */
145 O_IP_SRC_MASK, /* ip = IP/mask */
146 O_IP_SRC_ME, /* none */
147 O_IP_SRC_SET, /* u32=base, arg1=len, bitmap */
149 O_IP_DST, /* u32 = IP */
150 O_IP_DST_MASK, /* ip = IP/mask */
151 O_IP_DST_ME, /* none */
152 O_IP_DST_SET, /* u32=base, arg1=len, bitmap */
154 O_IP_SRCPORT, /* (n)port list:mask 4 byte ea */
155 O_IP_DSTPORT, /* (n)port list:mask 4 byte ea */
156 O_PROTO, /* arg1=protocol */
158 O_MACADDR2, /* 2 mac addr:mask */
159 O_MAC_TYPE, /* same as srcport */
169 O_IPOPT, /* arg1 = 2*u8 bitmap */
170 O_IPLEN, /* arg1 = len */
171 O_IPID, /* arg1 = id */
173 O_IPTOS, /* arg1 = id */
174 O_IPPRECEDENCE, /* arg1 = precedence << 5 */
175 O_IPTTL, /* arg1 = TTL */
177 O_IPVER, /* arg1 = version */
178 O_UID, /* u32 = id */
179 O_GID, /* u32 = id */
180 O_ESTAB, /* none (tcp established) */
181 O_TCPFLAGS, /* arg1 = 2*u8 bitmap */
182 O_TCPWIN, /* arg1 = desired win */
183 O_TCPSEQ, /* u32 = desired seq. */
184 O_TCPACK, /* u32 = desired seq. */
185 O_ICMPTYPE, /* u32 = icmp bitmap */
186 O_TCPOPTS, /* arg1 = 2*u8 bitmap */
188 O_VERREVPATH, /* none */
189 O_VERSRCREACH, /* none */
191 O_PROBE_STATE, /* none */
192 O_KEEP_STATE, /* none */
193 O_LIMIT, /* ipfw_insn_limit */
194 O_LIMIT_PARENT, /* dyn_type, not an opcode. */
197 * These are really 'actions'.
200 O_LOG, /* ipfw_insn_log */
201 O_PROB, /* u32 = match probability */
203 O_CHECK_STATE, /* none */
206 O_REJECT, /* arg1=icmp arg (same as deny) */
208 O_SKIPTO, /* arg1=next rule number */
209 O_PIPE, /* arg1=pipe number */
210 O_QUEUE, /* arg1=queue number */
211 O_DIVERT, /* arg1=port number */
212 O_TEE, /* arg1=port number */
213 O_FORWARD_IP, /* fwd sockaddr */
214 O_FORWARD_MAC, /* fwd mac */
221 O_IPSEC, /* has ipsec history */
222 O_IP_SRC_LOOKUP, /* arg1=table number, u32=value */
223 O_IP_DST_LOOKUP, /* arg1=table number, u32=value */
224 O_ANTISPOOF, /* none */
225 O_JAIL, /* u32 = id */
226 O_ALTQ, /* u32 = altq classif. qid */
227 O_DIVERTED, /* arg1=bitmap (1:loop, 2:out) */
228 O_TCPDATALEN, /* arg1 = tcp data len */
229 O_IP6_SRC, /* address without mask */
230 O_IP6_SRC_ME, /* my addresses */
231 O_IP6_SRC_MASK, /* address with the mask */
235 O_FLOW6ID, /* for flow id tag in the ipv6 pkt */
236 O_ICMP6TYPE, /* icmp6 packet type filtering */
237 O_EXT_HDR, /* filtering for ipv6 extension header */
241 * actions for ng_ipfw
243 O_NETGRAPH, /* send to ng_ipfw */
244 O_NGTEE, /* copy to ng_ipfw */
248 O_UNREACH6, /* arg1=icmpv6 code arg (deny) */
250 O_TAG, /* arg1=tag number */
251 O_TAGGED, /* arg1=tag number */
253 O_SETFIB, /* arg1=FIB number */
254 O_FIB, /* arg1=FIB desired fib number */
256 O_SOCKARG, /* socket argument */
258 O_CALLRETURN, /* arg1=called rule number */
260 O_FORWARD_IP6, /* fwd sockaddr_in6 */
262 O_DSCP, /* 2 u32 = DSCP mask */
263 O_SETDSCP, /* arg1=DSCP value */
265 O_LAST_OPCODE /* not an opcode! */
270 * The extension header are filtered only for presence using a bit
271 * vector with a flag for each header.
273 #define EXT_FRAGMENT 0x1
274 #define EXT_HOPOPTS 0x2
275 #define EXT_ROUTING 0x4
278 #define EXT_DSTOPTS 0x20
279 #define EXT_RTHDR0 0x40
280 #define EXT_RTHDR2 0x80
283 * Template for instructions.
285 * ipfw_insn is used for all instructions which require no operands,
286 * a single 16-bit value (arg1), or a couple of 8-bit values.
288 * For other instructions which require different/larger arguments
289 * we have derived structures, ipfw_insn_*.
291 * The size of the instruction (in 32-bit words) is in the low
292 * 6 bits of "len". The 2 remaining bits are used to implement
293 * NOT and OR on individual instructions. Given a type, you can
294 * compute the length to be put in "len" using F_INSN_SIZE(t)
296 * F_NOT negates the match result of the instruction.
298 * F_OR is used to build or blocks. By default, instructions
299 * are evaluated as part of a logical AND. An "or" block
300 * { X or Y or Z } contains F_OR set in all but the last
301 * instruction of the block. A match will cause the code
302 * to skip past the last instruction of the block.
304 * NOTA BENE: in a couple of places we assume that
305 * sizeof(ipfw_insn) == sizeof(u_int32_t)
306 * this needs to be fixed.
309 typedef struct _ipfw_insn { /* template for instructions */
311 u_int8_t len; /* number of 32-bit words */
314 #define F_LEN_MASK 0x3f
315 #define F_LEN(cmd) ((cmd)->len & F_LEN_MASK)
321 * The F_INSN_SIZE(type) computes the size, in 4-byte words, of
324 #define F_INSN_SIZE(t) ((sizeof (t))/sizeof(u_int32_t))
327 * This is used to store an array of 16-bit entries (ports etc.)
329 typedef struct _ipfw_insn_u16 {
331 u_int16_t ports[2]; /* there may be more */
335 * This is used to store an array of 32-bit entries
336 * (uid, single IPv4 addresses etc.)
338 typedef struct _ipfw_insn_u32 {
340 u_int32_t d[1]; /* one or more */
344 * This is used to store IP addr-mask pairs.
346 typedef struct _ipfw_insn_ip {
353 * This is used to forward to a given address (ip).
355 typedef struct _ipfw_insn_sa {
357 struct sockaddr_in sa;
361 * This is used to forward to a given address (ipv6).
363 typedef struct _ipfw_insn_sa6 {
365 struct sockaddr_in6 sa;
369 * This is used for MAC addr-mask pairs.
371 typedef struct _ipfw_insn_mac {
373 u_char addr[12]; /* dst[6] + src[6] */
374 u_char mask[12]; /* dst[6] + src[6] */
378 * This is used for interface match rules (recv xx, xmit xx).
380 typedef struct _ipfw_insn_if {
390 * This is used for storing an altq queue id number.
392 typedef struct _ipfw_insn_altq {
398 * This is used for limit rules.
400 typedef struct _ipfw_insn_limit {
403 u_int8_t limit_mask; /* combination of DYN_* below */
404 #define DYN_SRC_ADDR 0x1
405 #define DYN_SRC_PORT 0x2
406 #define DYN_DST_ADDR 0x4
407 #define DYN_DST_PORT 0x8
409 u_int16_t conn_limit;
413 * This is used for log instructions.
415 typedef struct _ipfw_insn_log {
417 u_int32_t max_log; /* how many do we log -- 0 = all */
418 u_int32_t log_left; /* how many left to log */
422 * Data structures required by both ipfw(8) and ipfw(4) but not part of the
423 * management API are protected by IPFW_INTERNAL.
426 /* Server pool support (LSNAT). */
428 LIST_ENTRY(cfg_spool) _next; /* chain of spool instances */
434 /* Redirect modes id. */
435 #define REDIR_ADDR 0x01
436 #define REDIR_PORT 0x02
437 #define REDIR_PROTO 0x04
440 /* Nat redirect configuration. */
442 LIST_ENTRY(cfg_redir) _next; /* chain of redir instances */
443 u_int16_t mode; /* type of redirect mode */
444 struct in_addr laddr; /* local ip address */
445 struct in_addr paddr; /* public ip address */
446 struct in_addr raddr; /* remote ip address */
447 u_short lport; /* local port */
448 u_short pport; /* public port */
449 u_short rport; /* remote port */
450 u_short pport_cnt; /* number of public ports */
451 u_short rport_cnt; /* number of remote ports */
452 int proto; /* protocol: tcp/udp */
453 struct alias_link **alink;
454 /* num of entry in spool chain */
456 /* chain of spool instances */
457 LIST_HEAD(spool_chain, cfg_spool) spool_chain;
462 /* Nat configuration data struct. */
464 /* chain of nat instances */
465 LIST_ENTRY(cfg_nat) _next;
467 struct in_addr ip; /* nat ip address */
468 char if_name[IF_NAMESIZE]; /* interface name */
469 int mode; /* aliasing mode */
470 struct libalias *lib; /* libalias instance */
471 /* number of entry in spool chain */
473 /* chain of redir instances */
474 LIST_HEAD(redir_chain, cfg_redir) redir_chain;
478 #define SOF_NAT sizeof(struct cfg_nat)
479 #define SOF_REDIR sizeof(struct cfg_redir)
480 #define SOF_SPOOL sizeof(struct cfg_spool)
483 typedef struct _ipfw_insn_nat {
488 /* Apply ipv6 mask on ipv6 addr */
489 #define APPLY_MASK(addr,mask) \
490 (addr)->__u6_addr.__u6_addr32[0] &= (mask)->__u6_addr.__u6_addr32[0]; \
491 (addr)->__u6_addr.__u6_addr32[1] &= (mask)->__u6_addr.__u6_addr32[1]; \
492 (addr)->__u6_addr.__u6_addr32[2] &= (mask)->__u6_addr.__u6_addr32[2]; \
493 (addr)->__u6_addr.__u6_addr32[3] &= (mask)->__u6_addr.__u6_addr32[3];
495 /* Structure for ipv6 */
496 typedef struct _ipfw_insn_ip6 {
498 struct in6_addr addr6;
499 struct in6_addr mask6;
502 /* Used to support icmp6 types */
503 typedef struct _ipfw_insn_icmp6 {
505 uint32_t d[7]; /* XXX This number si related to the netinet/icmp6.h
506 * define ICMP6_MAXTYPE
507 * as follows: n = ICMP6_MAXTYPE/32 + 1
513 * Here we have the structure representing an ipfw rule.
515 * It starts with a general area (with link fields and counters)
516 * followed by an array of one or more instructions, which the code
517 * accesses as an array of 32-bit values.
519 * Given a rule pointer r:
521 * r->cmd is the start of the first instruction.
522 * ACTION_PTR(r) is the start of the first action (things to do
523 * once a rule matched).
525 * When assembling instruction, remember the following:
527 * + if a rule has a "keep-state" (or "limit") option, then the
528 * first instruction (at r->cmd) MUST BE an O_PROBE_STATE
529 * + if a rule has a "log" option, then the first action
530 * (at ACTION_PTR(r)) MUST be O_LOG
531 * + if a rule has an "altq" option, it comes after "log"
532 * + if a rule has an O_TAG option, it comes after "log" and "altq"
534 * NOTE: we use a simple linked list of rules because we never need
535 * to delete a rule without scanning the list. We do not use
536 * queue(3) macros for portability and readability.
540 struct ip_fw *x_next; /* linked list of rules */
541 struct ip_fw *next_rule; /* ptr to next [skipto] rule */
542 /* 'next_rule' is used to pass up 'set_disable' status */
544 uint16_t act_ofs; /* offset of action in 32-bit units */
545 uint16_t cmd_len; /* # of 32-bit words in cmd */
546 uint16_t rulenum; /* rule number */
547 uint8_t set; /* rule set (0..31) */
548 #define RESVD_SET 31 /* set for default and persistent rules */
549 uint8_t _pad; /* padding */
550 uint32_t id; /* rule id */
552 /* These fields are present in all rules. */
553 uint64_t pcnt; /* Packet counter */
554 uint64_t bcnt; /* Byte counter */
555 uint32_t timestamp; /* tv_sec of last match */
557 ipfw_insn cmd[1]; /* storage for commands */
560 #define ACTION_PTR(rule) \
561 (ipfw_insn *)( (u_int32_t *)((rule)->cmd) + ((rule)->act_ofs) )
563 #define RULESIZE(rule) (sizeof(struct ip_fw) + \
564 ((struct ip_fw *)(rule))->cmd_len * 4 - 4)
566 #if 1 // should be moved to in.h
568 * This structure is used as a flow mask and a flow id for various
570 * addr_type is used in userland and kernel to mark the address type.
571 * fib is used in the kernel to record the fib in use.
572 * _flags is used in the kernel to store tcp flags for dynamic rules.
574 struct ipfw_flow_id {
581 uint8_t _flags; /* protocol-specific flags */
582 uint8_t addr_type; /* 4=ip4, 6=ip6, 1=ether ? */
583 struct in6_addr dst_ip6;
584 struct in6_addr src_ip6;
586 uint32_t extra; /* queue/pipe or frag_id */
590 #define IS_IP6_FLOW_ID(id) ((id)->addr_type == 6)
595 typedef struct _ipfw_dyn_rule ipfw_dyn_rule;
597 struct _ipfw_dyn_rule {
598 ipfw_dyn_rule *next; /* linked list of rules. */
599 struct ip_fw *rule; /* pointer to rule */
600 /* 'rule' is used to pass up the rule number (from the parent) */
602 ipfw_dyn_rule *parent; /* pointer to parent rule */
603 u_int64_t pcnt; /* packet match counter */
604 u_int64_t bcnt; /* byte match counter */
605 struct ipfw_flow_id id; /* (masked) flow id */
606 u_int32_t expire; /* expire time */
607 u_int32_t bucket; /* which bucket in hash table */
608 u_int32_t state; /* state of this rule (typically a
609 * combination of TCP flags)
611 u_int32_t ack_fwd; /* most recent ACKs in forward */
612 u_int32_t ack_rev; /* and reverse directions (used */
613 /* to generate keepalives) */
614 u_int16_t dyn_type; /* rule type */
615 u_int16_t count; /* refcount */
619 * Definitions for IP option names.
621 #define IP_FW_IPOPT_LSRR 0x01
622 #define IP_FW_IPOPT_SSRR 0x02
623 #define IP_FW_IPOPT_RR 0x04
624 #define IP_FW_IPOPT_TS 0x08
627 * Definitions for TCP option names.
629 #define IP_FW_TCPOPT_MSS 0x01
630 #define IP_FW_TCPOPT_WINDOW 0x02
631 #define IP_FW_TCPOPT_SACK 0x04
632 #define IP_FW_TCPOPT_TS 0x08
633 #define IP_FW_TCPOPT_CC 0x10
635 #define ICMP_REJECT_RST 0x100 /* fake ICMP code (send a TCP RST) */
636 #define ICMP6_UNREACH_RST 0x100 /* fake ICMPv6 code (send a TCP RST) */
639 * These are used for lookup tables.
642 #define IPFW_TABLE_CIDR 1 /* Table for holding IPv4/IPv6 prefixes */
643 #define IPFW_TABLE_INTERFACE 2 /* Table for holding interface names */
644 #define IPFW_TABLE_MAXTYPE 2 /* Maximum valid number */
646 typedef struct _ipfw_table_entry {
647 in_addr_t addr; /* network address */
648 u_int32_t value; /* value */
649 u_int16_t tbl; /* table number */
650 u_int8_t masklen; /* mask length */
653 typedef struct _ipfw_table_xentry {
654 uint16_t len; /* Total entry length */
655 uint8_t type; /* entry type */
656 uint8_t masklen; /* mask length */
657 uint16_t tbl; /* table number */
658 uint16_t flags; /* record flags */
659 uint32_t value; /* value */
661 /* Longest field needs to be aligned by 4-byte boundary */
662 struct in6_addr addr6; /* IPv6 address */
663 char iface[IF_NAMESIZE]; /* interface name */
666 #define IPFW_TCF_INET 0x01 /* CIDR flags: IPv4 record */
668 typedef struct _ipfw_table {
669 u_int32_t size; /* size of entries in bytes */
670 u_int32_t cnt; /* # of entries */
671 u_int16_t tbl; /* table number */
672 ipfw_table_entry ent[0]; /* entries */
675 typedef struct _ipfw_xtable {
676 ip_fw3_opheader opheader; /* IP_FW3 opcode */
677 uint32_t size; /* size of entries in bytes */
678 uint32_t cnt; /* # of entries */
679 uint16_t tbl; /* table number */
680 uint8_t type; /* table type */
681 ipfw_table_xentry xent[0]; /* entries */
684 typedef struct _ipfw_obj_tlv {
685 uint16_t type; /* TLV type */
686 uint16_t flags; /* unused */
687 uint32_t length; /* Total length, aligned to u64 */
689 #define IPFW_TLV_TBL_NAME 1
690 #define IPFW_TLV_TBLNAME_LIST 2
691 #define IPFW_TLV_RULE_LIST 3
692 #define IPFW_TLV_STATE_LIST 4
694 /* Object name TLV */
695 typedef struct _ipfw_obj_ntlv {
696 ipfw_obj_tlv head; /* TLV header */
697 uint16_t idx; /* Name index */
698 uint16_t spare0; /* unused */
699 uint32_t set; /* set, if applicable */
700 char name[64]; /* Null-terminated name */
703 /* Containter TLVs */
704 typedef struct _ipfw_obj_ctlv {
705 ipfw_obj_tlv head; /* TLV header */
706 uint32_t count; /* Number of sub-TLVs */
707 uint32_t objsize; /* Single object size */
710 typedef struct _ipfw_xtable_info {
711 uint8_t type; /* table type (cidr,iface,..) */
712 uint8_t ftype; /* table value format type */
713 uint8_t atype; /* algorithm type */
715 uint32_t set; /* set table is in */
716 uint32_t kidx; /* kernel index */
717 uint32_t refcnt; /* number of references */
718 uint32_t count; /* Number of records */
719 uint32_t size; /* Total size of records */
720 char tablename[64]; /* table name */
721 char algoname[32]; /* algorithm name */
724 #define IPFW_OBJTYPE_TABLE 1
725 typedef struct _ipfw_obj_header {
726 ip_fw3_opheader opheader; /* IP_FW3 opcode */
727 uint32_t set; /* Set we're operating */
728 uint16_t idx; /* object name index */
729 uint8_t objtype; /* object type */
730 uint8_t objsubtype; /* object subtype */
731 ipfw_obj_ntlv ntlv; /* object name tlv */
734 typedef struct _ipfw_obj_lheader {
735 ip_fw3_opheader opheader; /* IP_FW3 opcode */
737 uint32_t count; /* Total objects count */
738 uint32_t size; /* Total objects size */
739 uint32_t objsize; /* Size of one object */
742 #define IPFW_CFG_GET_STATIC 1
743 #define IPFW_CFG_GET_STATES 2
744 typedef struct _ipfw_cfg_lheader {
745 ip_fw3_opheader opheader; /* IP_FW3 opcode */
746 uint32_t set_mask; /* disabled set mask */
747 uint32_t flags; /* Request flags */
748 uint32_t size; /* neded buffer size */
753 #endif /* _IPFW2_H */