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
39 #define RESVD_SET 31 /*set for default and persistent rules*/
40 #define IPFW_MAX_SETS 32 /* Number of sets supported by ipfw*/
43 * Compat values for old clients
46 #define IPFW_TABLES_MAX 65535
47 #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 (IP_FW_TARG) is used
53 * to represent 'tablearg' value, e.g. indicate the use of a 'tablearg'
54 * result of the most recent table() lookup.
55 * Note that 16bit is only a historical limit, resulting from
56 * the use of a 16-bit fields for that value. In reality, we can have
57 * 2^32 pipes, queues, tag values and so on.
59 #define IPFW_ARG_MIN 1
60 #define IPFW_ARG_MAX 65534
61 #define IP_FW_TABLEARG 65535 /* Compat value for old clients */
62 #define IP_FW_TARG 0 /* Current tablearg value */
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 #define IP_FW_TABLE_XADD 86 /* add entry */
79 #define IP_FW_TABLE_XDEL 87 /* delete entry */
80 #define IP_FW_TABLE_XGETSIZE 88 /* get table size (deprecated) */
81 #define IP_FW_TABLE_XLIST 89 /* list table contents */
82 #define IP_FW_TABLE_XDESTROY 90 /* destroy table */
83 #define IP_FW_TABLES_XLIST 92 /* list all tables */
84 #define IP_FW_TABLE_XINFO 93 /* request info for one table */
85 #define IP_FW_TABLE_XFLUSH 94 /* flush table data */
86 #define IP_FW_TABLE_XCREATE 95 /* create new table */
87 #define IP_FW_TABLE_XMODIFY 96 /* modify existing table */
88 #define IP_FW_XGET 97 /* Retrieve configuration */
89 #define IP_FW_XADD 98 /* add rule */
90 #define IP_FW_XDEL 99 /* del rule */
91 #define IP_FW_XMOVE 100 /* move rules to different set */
92 #define IP_FW_XZERO 101 /* clear accounting */
93 #define IP_FW_XRESETLOG 102 /* zero rules logs */
94 #define IP_FW_SET_SWAP 103 /* Swap between 2 sets */
95 #define IP_FW_SET_MOVE 104 /* Move one set to another one */
96 #define IP_FW_SET_ENABLE 105 /* Enable/disable sets */
97 #define IP_FW_TABLE_XFIND 106 /* finds an entry */
98 #define IP_FW_XIFLIST 107 /* list tracked interfaces */
99 #define IP_FW_TABLES_ALIST 108 /* list table algorithms */
100 #define IP_FW_TABLE_XSWAP 109 /* swap two tables */
101 #define IP_FW_TABLE_VLIST 110 /* dump table value hash */
103 #define IP_FW_NAT44_XCONFIG 111 /* Create/modify NAT44 instance */
104 #define IP_FW_NAT44_DESTROY 112 /* Destroys NAT44 instance */
105 #define IP_FW_NAT44_XGETCONFIG 113 /* Get NAT44 instance config */
106 #define IP_FW_NAT44_LIST_NAT 114 /* List all NAT44 instances */
107 #define IP_FW_NAT44_XGETLOG 115 /* Get log from NAT44 instance */
109 #define IP_FW_DUMP_SOPTCODES 116 /* Dump available sopts/versions */
110 #define IP_FW_DUMP_SRVOBJECTS 117 /* Dump existing named objects */
113 * The kernel representation of ipfw rules is made of a list of
114 * 'instructions' (for all practical purposes equivalent to BPF
115 * instructions), which specify which fields of the packet
116 * (or its metadata) should be analysed.
118 * Each instruction is stored in a structure which begins with
119 * "ipfw_insn", and can contain extra fields depending on the
120 * instruction type (listed below).
121 * Note that the code is written so that individual instructions
122 * have a size which is a multiple of 32 bits. This means that, if
123 * such structures contain pointers or other 64-bit entities,
124 * (there is just one instance now) they may end up unaligned on
125 * 64-bit architectures, so the must be handled with care.
127 * "enum ipfw_opcodes" are the opcodes supported. We can have up
128 * to 256 different opcodes. When adding new opcodes, they should
129 * be appended to the end of the opcode list before O_LAST_OPCODE,
130 * this will prevent the ABI from being broken, otherwise users
131 * will have to recompile ipfw(8) when they update the kernel.
134 enum ipfw_opcodes { /* arguments (4 byte each) */
137 O_IP_SRC, /* u32 = IP */
138 O_IP_SRC_MASK, /* ip = IP/mask */
139 O_IP_SRC_ME, /* none */
140 O_IP_SRC_SET, /* u32=base, arg1=len, bitmap */
142 O_IP_DST, /* u32 = IP */
143 O_IP_DST_MASK, /* ip = IP/mask */
144 O_IP_DST_ME, /* none */
145 O_IP_DST_SET, /* u32=base, arg1=len, bitmap */
147 O_IP_SRCPORT, /* (n)port list:mask 4 byte ea */
148 O_IP_DSTPORT, /* (n)port list:mask 4 byte ea */
149 O_PROTO, /* arg1=protocol */
151 O_MACADDR2, /* 2 mac addr:mask */
152 O_MAC_TYPE, /* same as srcport */
162 O_IPOPT, /* arg1 = 2*u8 bitmap */
163 O_IPLEN, /* arg1 = len */
164 O_IPID, /* arg1 = id */
166 O_IPTOS, /* arg1 = id */
167 O_IPPRECEDENCE, /* arg1 = precedence << 5 */
168 O_IPTTL, /* arg1 = TTL */
170 O_IPVER, /* arg1 = version */
171 O_UID, /* u32 = id */
172 O_GID, /* u32 = id */
173 O_ESTAB, /* none (tcp established) */
174 O_TCPFLAGS, /* arg1 = 2*u8 bitmap */
175 O_TCPWIN, /* arg1 = desired win */
176 O_TCPSEQ, /* u32 = desired seq. */
177 O_TCPACK, /* u32 = desired seq. */
178 O_ICMPTYPE, /* u32 = icmp bitmap */
179 O_TCPOPTS, /* arg1 = 2*u8 bitmap */
181 O_VERREVPATH, /* none */
182 O_VERSRCREACH, /* none */
184 O_PROBE_STATE, /* none */
185 O_KEEP_STATE, /* none */
186 O_LIMIT, /* ipfw_insn_limit */
187 O_LIMIT_PARENT, /* dyn_type, not an opcode. */
190 * These are really 'actions'.
193 O_LOG, /* ipfw_insn_log */
194 O_PROB, /* u32 = match probability */
196 O_CHECK_STATE, /* none */
199 O_REJECT, /* arg1=icmp arg (same as deny) */
201 O_SKIPTO, /* arg1=next rule number */
202 O_PIPE, /* arg1=pipe number */
203 O_QUEUE, /* arg1=queue number */
204 O_DIVERT, /* arg1=port number */
205 O_TEE, /* arg1=port number */
206 O_FORWARD_IP, /* fwd sockaddr */
207 O_FORWARD_MAC, /* fwd mac */
214 O_IPSEC, /* has ipsec history */
215 O_IP_SRC_LOOKUP, /* arg1=table number, u32=value */
216 O_IP_DST_LOOKUP, /* arg1=table number, u32=value */
217 O_ANTISPOOF, /* none */
218 O_JAIL, /* u32 = id */
219 O_ALTQ, /* u32 = altq classif. qid */
220 O_DIVERTED, /* arg1=bitmap (1:loop, 2:out) */
221 O_TCPDATALEN, /* arg1 = tcp data len */
222 O_IP6_SRC, /* address without mask */
223 O_IP6_SRC_ME, /* my addresses */
224 O_IP6_SRC_MASK, /* address with the mask */
228 O_FLOW6ID, /* for flow id tag in the ipv6 pkt */
229 O_ICMP6TYPE, /* icmp6 packet type filtering */
230 O_EXT_HDR, /* filtering for ipv6 extension header */
234 * actions for ng_ipfw
236 O_NETGRAPH, /* send to ng_ipfw */
237 O_NGTEE, /* copy to ng_ipfw */
241 O_UNREACH6, /* arg1=icmpv6 code arg (deny) */
243 O_TAG, /* arg1=tag number */
244 O_TAGGED, /* arg1=tag number */
246 O_SETFIB, /* arg1=FIB number */
247 O_FIB, /* arg1=FIB desired fib number */
249 O_SOCKARG, /* socket argument */
251 O_CALLRETURN, /* arg1=called rule number */
253 O_FORWARD_IP6, /* fwd sockaddr_in6 */
255 O_DSCP, /* 2 u32 = DSCP mask */
256 O_SETDSCP, /* arg1=DSCP value */
257 O_IP_FLOW_LOOKUP, /* arg1=table number, u32=value */
259 O_LAST_OPCODE /* not an opcode! */
264 * The extension header are filtered only for presence using a bit
265 * vector with a flag for each header.
267 #define EXT_FRAGMENT 0x1
268 #define EXT_HOPOPTS 0x2
269 #define EXT_ROUTING 0x4
272 #define EXT_DSTOPTS 0x20
273 #define EXT_RTHDR0 0x40
274 #define EXT_RTHDR2 0x80
277 * Template for instructions.
279 * ipfw_insn is used for all instructions which require no operands,
280 * a single 16-bit value (arg1), or a couple of 8-bit values.
282 * For other instructions which require different/larger arguments
283 * we have derived structures, ipfw_insn_*.
285 * The size of the instruction (in 32-bit words) is in the low
286 * 6 bits of "len". The 2 remaining bits are used to implement
287 * NOT and OR on individual instructions. Given a type, you can
288 * compute the length to be put in "len" using F_INSN_SIZE(t)
290 * F_NOT negates the match result of the instruction.
292 * F_OR is used to build or blocks. By default, instructions
293 * are evaluated as part of a logical AND. An "or" block
294 * { X or Y or Z } contains F_OR set in all but the last
295 * instruction of the block. A match will cause the code
296 * to skip past the last instruction of the block.
298 * NOTA BENE: in a couple of places we assume that
299 * sizeof(ipfw_insn) == sizeof(u_int32_t)
300 * this needs to be fixed.
303 typedef struct _ipfw_insn { /* template for instructions */
305 u_int8_t len; /* number of 32-bit words */
308 #define F_LEN_MASK 0x3f
309 #define F_LEN(cmd) ((cmd)->len & F_LEN_MASK)
315 * The F_INSN_SIZE(type) computes the size, in 4-byte words, of
318 #define F_INSN_SIZE(t) ((sizeof (t))/sizeof(u_int32_t))
321 * This is used to store an array of 16-bit entries (ports etc.)
323 typedef struct _ipfw_insn_u16 {
325 u_int16_t ports[2]; /* there may be more */
329 * This is used to store an array of 32-bit entries
330 * (uid, single IPv4 addresses etc.)
332 typedef struct _ipfw_insn_u32 {
334 u_int32_t d[1]; /* one or more */
338 * This is used to store IP addr-mask pairs.
340 typedef struct _ipfw_insn_ip {
347 * This is used to forward to a given address (ip).
349 typedef struct _ipfw_insn_sa {
351 struct sockaddr_in sa;
355 * This is used to forward to a given address (ipv6).
357 typedef struct _ipfw_insn_sa6 {
359 struct sockaddr_in6 sa;
363 * This is used for MAC addr-mask pairs.
365 typedef struct _ipfw_insn_mac {
367 u_char addr[12]; /* dst[6] + src[6] */
368 u_char mask[12]; /* dst[6] + src[6] */
372 * This is used for interface match rules (recv xx, xmit xx).
374 typedef struct _ipfw_insn_if {
385 * This is used for storing an altq queue id number.
387 typedef struct _ipfw_insn_altq {
393 * This is used for limit rules.
395 typedef struct _ipfw_insn_limit {
398 u_int8_t limit_mask; /* combination of DYN_* below */
399 #define DYN_SRC_ADDR 0x1
400 #define DYN_SRC_PORT 0x2
401 #define DYN_DST_ADDR 0x4
402 #define DYN_DST_PORT 0x8
404 u_int16_t conn_limit;
408 * This is used for log instructions.
410 typedef struct _ipfw_insn_log {
412 u_int32_t max_log; /* how many do we log -- 0 = all */
413 u_int32_t log_left; /* how many left to log */
416 /* Legacy NAT structures, compat only */
419 * Data structures required by both ipfw(8) and ipfw(4) but not part of the
420 * management API are protected by IPFW_INTERNAL.
423 /* Server pool support (LSNAT). */
425 LIST_ENTRY(cfg_spool) _next; /* chain of spool instances */
431 /* Redirect modes id. */
432 #define REDIR_ADDR 0x01
433 #define REDIR_PORT 0x02
434 #define REDIR_PROTO 0x04
437 /* Nat redirect configuration. */
439 LIST_ENTRY(cfg_redir) _next; /* chain of redir instances */
440 u_int16_t mode; /* type of redirect mode */
441 struct in_addr laddr; /* local ip address */
442 struct in_addr paddr; /* public ip address */
443 struct in_addr raddr; /* remote ip address */
444 u_short lport; /* local port */
445 u_short pport; /* public port */
446 u_short rport; /* remote port */
447 u_short pport_cnt; /* number of public ports */
448 u_short rport_cnt; /* number of remote ports */
449 int proto; /* protocol: tcp/udp */
450 struct alias_link **alink;
451 /* num of entry in spool chain */
453 /* chain of spool instances */
454 LIST_HEAD(spool_chain, cfg_spool) spool_chain;
459 /* Nat configuration data struct. */
461 /* chain of nat instances */
462 LIST_ENTRY(cfg_nat) _next;
464 struct in_addr ip; /* nat ip address */
465 char if_name[IF_NAMESIZE]; /* interface name */
466 int mode; /* aliasing mode */
467 struct libalias *lib; /* libalias instance */
468 /* number of entry in spool chain */
470 /* chain of redir instances */
471 LIST_HEAD(redir_chain, cfg_redir) redir_chain;
475 #define SOF_NAT sizeof(struct cfg_nat)
476 #define SOF_REDIR sizeof(struct cfg_redir)
477 #define SOF_SPOOL sizeof(struct cfg_spool)
479 #endif /* ifndef _KERNEL */
482 struct nat44_cfg_spool {
487 #define NAT44_REDIR_ADDR 0x01
488 #define NAT44_REDIR_PORT 0x02
489 #define NAT44_REDIR_PROTO 0x04
491 /* Nat redirect configuration. */
492 struct nat44_cfg_redir {
493 struct in_addr laddr; /* local ip address */
494 struct in_addr paddr; /* public ip address */
495 struct in_addr raddr; /* remote ip address */
496 uint16_t lport; /* local port */
497 uint16_t pport; /* public port */
498 uint16_t rport; /* remote port */
499 uint16_t pport_cnt; /* number of public ports */
500 uint16_t rport_cnt; /* number of remote ports */
501 uint16_t mode; /* type of redirect mode */
502 uint16_t spool_cnt; /* num of entry in spool chain */
504 uint32_t proto; /* protocol: tcp/udp */
507 /* Nat configuration data struct. */
508 struct nat44_cfg_nat {
509 char name[64]; /* nat name */
510 char if_name[64]; /* interface name */
511 uint32_t size; /* structure size incl. redirs */
512 struct in_addr ip; /* nat IPv4 address */
513 uint32_t mode; /* aliasing mode */
514 uint32_t redir_cnt; /* number of entry in spool chain */
518 typedef struct _ipfw_insn_nat {
523 /* Apply ipv6 mask on ipv6 addr */
524 #define APPLY_MASK(addr,mask) \
525 (addr)->__u6_addr.__u6_addr32[0] &= (mask)->__u6_addr.__u6_addr32[0]; \
526 (addr)->__u6_addr.__u6_addr32[1] &= (mask)->__u6_addr.__u6_addr32[1]; \
527 (addr)->__u6_addr.__u6_addr32[2] &= (mask)->__u6_addr.__u6_addr32[2]; \
528 (addr)->__u6_addr.__u6_addr32[3] &= (mask)->__u6_addr.__u6_addr32[3];
530 /* Structure for ipv6 */
531 typedef struct _ipfw_insn_ip6 {
533 struct in6_addr addr6;
534 struct in6_addr mask6;
537 /* Used to support icmp6 types */
538 typedef struct _ipfw_insn_icmp6 {
540 uint32_t d[7]; /* XXX This number si related to the netinet/icmp6.h
541 * define ICMP6_MAXTYPE
542 * as follows: n = ICMP6_MAXTYPE/32 + 1
548 * Here we have the structure representing an ipfw rule.
552 * [ counter block, size = rule->cntr_len ]
553 * [ one or more instructions, size = rule->cmd_len * 4 ]
555 * It starts with a general area (with link fields).
556 * Counter block may be next (if rule->cntr_len > 0),
557 * followed by an array of one or more instructions, which the code
558 * accesses as an array of 32-bit values. rule->cmd_len represents
559 * the total instructions legth in u32 worrd, while act_ofs represents
560 * rule action offset in u32 words.
562 * When assembling instruction, remember the following:
564 * + if a rule has a "keep-state" (or "limit") option, then the
565 * first instruction (at r->cmd) MUST BE an O_PROBE_STATE
566 * + if a rule has a "log" option, then the first action
567 * (at ACTION_PTR(r)) MUST be O_LOG
568 * + if a rule has an "altq" option, it comes after "log"
569 * + if a rule has an O_TAG option, it comes after "log" and "altq"
572 * All structures (excluding instructions) are u64-aligned.
577 uint16_t act_ofs; /* offset of action in 32-bit units */
578 uint16_t cmd_len; /* # of 32-bit words in cmd */
580 uint8_t set; /* rule set (0..31) */
581 uint8_t flags; /* rule flags */
582 uint32_t rulenum; /* rule number */
583 uint32_t id; /* rule id */
585 ipfw_insn cmd[1]; /* storage for commands */
587 #define IPFW_RULE_NOOPT 0x01 /* Has no options in body */
589 /* Unaligned version */
591 /* Base ipfw rule counter block. */
592 struct ip_fw_bcounter {
593 uint16_t size; /* Size of counter block, bytes */
594 uint8_t flags; /* flags for given block */
596 uint32_t timestamp; /* tv_sec of last match */
597 uint64_t pcnt; /* Packet counter */
598 uint64_t bcnt; /* Byte counter */
607 struct ip_fw *x_next; /* linked list of rules */
608 struct ip_fw *next_rule; /* ptr to next [skipto] rule */
609 /* 'next_rule' is used to pass up 'set_disable' status */
611 uint16_t act_ofs; /* offset of action in 32-bit units */
612 uint16_t cmd_len; /* # of 32-bit words in cmd */
613 uint16_t rulenum; /* rule number */
614 uint8_t set; /* rule set (0..31) */
615 uint8_t _pad; /* padding */
616 uint32_t id; /* rule id */
618 /* These fields are present in all rules. */
619 uint64_t pcnt; /* Packet counter */
620 uint64_t bcnt; /* Byte counter */
621 uint32_t timestamp; /* tv_sec of last match */
623 ipfw_insn cmd[1]; /* storage for commands */
627 #define ACTION_PTR(rule) \
628 (ipfw_insn *)( (u_int32_t *)((rule)->cmd) + ((rule)->act_ofs) )
630 #define RULESIZE(rule) (sizeof(*(rule)) + (rule)->cmd_len * 4 - 4)
633 #if 1 // should be moved to in.h
635 * This structure is used as a flow mask and a flow id for various
637 * addr_type is used in userland and kernel to mark the address type.
638 * fib is used in the kernel to record the fib in use.
639 * _flags is used in the kernel to store tcp flags for dynamic rules.
641 struct ipfw_flow_id {
648 uint8_t _flags; /* protocol-specific flags */
649 uint8_t addr_type; /* 4=ip4, 6=ip6, 1=ether ? */
650 struct in6_addr dst_ip6;
651 struct in6_addr src_ip6;
653 uint32_t extra; /* queue/pipe or frag_id */
657 #define IS_IP6_FLOW_ID(id) ((id)->addr_type == 6)
662 typedef struct _ipfw_dyn_rule ipfw_dyn_rule;
664 struct _ipfw_dyn_rule {
665 ipfw_dyn_rule *next; /* linked list of rules. */
666 struct ip_fw *rule; /* pointer to rule */
667 /* 'rule' is used to pass up the rule number (from the parent) */
669 ipfw_dyn_rule *parent; /* pointer to parent rule */
670 u_int64_t pcnt; /* packet match counter */
671 u_int64_t bcnt; /* byte match counter */
672 struct ipfw_flow_id id; /* (masked) flow id */
673 u_int32_t expire; /* expire time */
674 u_int32_t bucket; /* which bucket in hash table */
675 u_int32_t state; /* state of this rule (typically a
676 * combination of TCP flags)
678 u_int32_t ack_fwd; /* most recent ACKs in forward */
679 u_int32_t ack_rev; /* and reverse directions (used */
680 /* to generate keepalives) */
681 u_int16_t dyn_type; /* rule type */
682 u_int16_t count; /* refcount */
686 * Definitions for IP option names.
688 #define IP_FW_IPOPT_LSRR 0x01
689 #define IP_FW_IPOPT_SSRR 0x02
690 #define IP_FW_IPOPT_RR 0x04
691 #define IP_FW_IPOPT_TS 0x08
694 * Definitions for TCP option names.
696 #define IP_FW_TCPOPT_MSS 0x01
697 #define IP_FW_TCPOPT_WINDOW 0x02
698 #define IP_FW_TCPOPT_SACK 0x04
699 #define IP_FW_TCPOPT_TS 0x08
700 #define IP_FW_TCPOPT_CC 0x10
702 #define ICMP_REJECT_RST 0x100 /* fake ICMP code (send a TCP RST) */
703 #define ICMP6_UNREACH_RST 0x100 /* fake ICMPv6 code (send a TCP RST) */
706 * These are used for lookup tables.
709 #define IPFW_TABLE_ADDR 1 /* Table for holding IPv4/IPv6 prefixes */
710 #define IPFW_TABLE_INTERFACE 2 /* Table for holding interface names */
711 #define IPFW_TABLE_NUMBER 3 /* Table for holding ports/uid/gid/etc */
712 #define IPFW_TABLE_FLOW 4 /* Table for holding flow data */
713 #define IPFW_TABLE_MAXTYPE 4 /* Maximum valid number */
715 #define IPFW_TABLE_CIDR IPFW_TABLE_ADDR /* compat */
718 #define IPFW_VTYPE_LEGACY 0xFFFFFFFF /* All data is filled in */
719 #define IPFW_VTYPE_SKIPTO 0x00000001 /* skipto/call/callreturn */
720 #define IPFW_VTYPE_PIPE 0x00000002 /* pipe/queue */
721 #define IPFW_VTYPE_FIB 0x00000004 /* setfib */
722 #define IPFW_VTYPE_NAT 0x00000008 /* nat */
723 #define IPFW_VTYPE_DSCP 0x00000010 /* dscp */
724 #define IPFW_VTYPE_TAG 0x00000020 /* tag/untag */
725 #define IPFW_VTYPE_DIVERT 0x00000040 /* divert/tee */
726 #define IPFW_VTYPE_NETGRAPH 0x00000080 /* netgraph/ngtee */
727 #define IPFW_VTYPE_LIMIT 0x00000100 /* limit */
728 #define IPFW_VTYPE_NH4 0x00000200 /* IPv4 nexthop */
729 #define IPFW_VTYPE_NH6 0x00000400 /* IPv6 nexthop */
731 typedef struct _ipfw_table_entry {
732 in_addr_t addr; /* network address */
733 u_int32_t value; /* value */
734 u_int16_t tbl; /* table number */
735 u_int8_t masklen; /* mask length */
738 typedef struct _ipfw_table_xentry {
739 uint16_t len; /* Total entry length */
740 uint8_t type; /* entry type */
741 uint8_t masklen; /* mask length */
742 uint16_t tbl; /* table number */
743 uint16_t flags; /* record flags */
744 uint32_t value; /* value */
746 /* Longest field needs to be aligned by 4-byte boundary */
747 struct in6_addr addr6; /* IPv6 address */
748 char iface[IF_NAMESIZE]; /* interface name */
751 #define IPFW_TCF_INET 0x01 /* CIDR flags: IPv4 record */
753 typedef struct _ipfw_table {
754 u_int32_t size; /* size of entries in bytes */
755 u_int32_t cnt; /* # of entries */
756 u_int16_t tbl; /* table number */
757 ipfw_table_entry ent[0]; /* entries */
760 typedef struct _ipfw_xtable {
761 ip_fw3_opheader opheader; /* IP_FW3 opcode */
762 uint32_t size; /* size of entries in bytes */
763 uint32_t cnt; /* # of entries */
764 uint16_t tbl; /* table number */
765 uint8_t type; /* table type */
766 ipfw_table_xentry xent[0]; /* entries */
769 typedef struct _ipfw_obj_tlv {
770 uint16_t type; /* TLV type */
771 uint16_t flags; /* TLV-specific flags */
772 uint32_t length; /* Total length, aligned to u64 */
774 #define IPFW_TLV_TBL_NAME 1
775 #define IPFW_TLV_TBLNAME_LIST 2
776 #define IPFW_TLV_RULE_LIST 3
777 #define IPFW_TLV_DYNSTATE_LIST 4
778 #define IPFW_TLV_TBL_ENT 5
779 #define IPFW_TLV_DYN_ENT 6
780 #define IPFW_TLV_RULE_ENT 7
781 #define IPFW_TLV_TBLENT_LIST 8
782 #define IPFW_TLV_RANGE 9
784 /* Object name TLV */
785 typedef struct _ipfw_obj_ntlv {
786 ipfw_obj_tlv head; /* TLV header */
787 uint16_t idx; /* Name index */
788 uint8_t spare; /* unused */
789 uint8_t type; /* object type, if applicable */
790 uint32_t set; /* set, if applicable */
791 char name[64]; /* Null-terminated name */
794 /* IPv4/IPv6 L4 flow description */
807 struct in6_addr sip6;
808 struct in6_addr dip6;
813 typedef struct _ipfw_table_value {
814 uint32_t tag; /* O_TAG/O_TAGGED */
815 uint32_t pipe; /* O_PIPE/O_QUEUE */
816 uint16_t divert; /* O_DIVERT/O_TEE */
817 uint16_t skipto; /* skipto, CALLRET */
818 uint32_t netgraph; /* O_NETGRAPH/O_NGTEE */
819 uint32_t fib; /* O_SETFIB */
820 uint32_t nat; /* O_NAT */
826 uint32_t limit; /* O_LIMIT */
827 uint32_t zoneid; /* scope zone id for nh6 */
831 /* Table entry TLV */
832 typedef struct _ipfw_obj_tentry {
833 ipfw_obj_tlv head; /* TLV header */
834 uint8_t subtype; /* subtype (IPv4,IPv6) */
835 uint8_t masklen; /* mask length */
836 uint8_t result; /* request result */
838 uint16_t idx; /* Table name index */
841 /* Longest field needs to be aligned by 8-byte boundary */
842 struct in_addr addr; /* IPv4 address */
843 uint32_t key; /* uid/gid/port */
844 struct in6_addr addr6; /* IPv6 address */
845 char iface[IF_NAMESIZE]; /* interface name */
846 struct tflow_entry flow;
849 ipfw_table_value value; /* value data */
850 uint32_t kidx; /* value kernel index */
853 #define IPFW_TF_UPDATE 0x01 /* Update record if exists */
855 #define IPFW_CTF_ATOMIC 0x01 /* Perform atomic operation */
856 /* Operation results */
857 #define IPFW_TR_IGNORED 0 /* Entry was ignored (rollback) */
858 #define IPFW_TR_ADDED 1 /* Entry was succesfully added */
859 #define IPFW_TR_UPDATED 2 /* Entry was succesfully updated*/
860 #define IPFW_TR_DELETED 3 /* Entry was succesfully deleted*/
861 #define IPFW_TR_LIMIT 4 /* Entry was ignored (limit) */
862 #define IPFW_TR_NOTFOUND 5 /* Entry was not found */
863 #define IPFW_TR_EXISTS 6 /* Entry already exists */
864 #define IPFW_TR_ERROR 7 /* Request has failed (unknown) */
866 typedef struct _ipfw_obj_dyntlv {
870 #define IPFW_DF_LAST 0x01 /* Last state in chain */
872 /* Containter TLVs */
873 typedef struct _ipfw_obj_ctlv {
874 ipfw_obj_tlv head; /* TLV header */
875 uint32_t count; /* Number of sub-TLVs */
876 uint16_t objsize; /* Single object size */
877 uint8_t version; /* TLV version */
878 uint8_t flags; /* TLV-specific flags */
882 typedef struct _ipfw_range_tlv {
883 ipfw_obj_tlv head; /* TLV header */
884 uint32_t flags; /* Range flags */
885 uint16_t start_rule; /* Range start */
886 uint16_t end_rule; /* Range end */
887 uint32_t set; /* Range set to match */
888 uint32_t new_set; /* New set to move/swap to */
890 #define IPFW_RCFLAG_RANGE 0x01 /* rule range is set */
891 #define IPFW_RCFLAG_ALL 0x02 /* match ALL rules */
892 #define IPFW_RCFLAG_SET 0x04 /* match rules in given set */
893 /* User-settable flags */
894 #define IPFW_RCFLAG_USER (IPFW_RCFLAG_RANGE | IPFW_RCFLAG_ALL | \
896 /* Internally used flags */
897 #define IPFW_RCFLAG_DEFAULT 0x0100 /* Do not skip defaul rule */
899 typedef struct _ipfw_ta_tinfo {
900 uint32_t flags; /* Format flags */
902 uint8_t taclass4; /* algorithm class */
904 uint16_t itemsize4; /* item size in runtime */
905 uint32_t size4; /* runtime structure size */
906 uint32_t count4; /* number of items in runtime */
907 uint8_t taclass6; /* algorithm class */
909 uint16_t itemsize6; /* item size in runtime */
910 uint32_t size6; /* runtime structure size */
911 uint32_t count6; /* number of items in runtime */
913 #define IPFW_TACLASS_HASH 1 /* algo is based on hash */
914 #define IPFW_TACLASS_ARRAY 2 /* algo is based on array */
915 #define IPFW_TACLASS_RADIX 3 /* algo is based on radix tree */
917 #define IPFW_TATFLAGS_DATA 0x0001 /* Has data filled in */
918 #define IPFW_TATFLAGS_AFDATA 0x0002 /* Separate data per AF */
919 #define IPFW_TATFLAGS_AFITEM 0x0004 /* diff. items per AF */
921 typedef struct _ipfw_xtable_info {
922 uint8_t type; /* table type (addr,iface,..) */
923 uint8_t tflags; /* type flags */
924 uint16_t mflags; /* modification flags */
925 uint16_t flags; /* generic table flags */
927 uint32_t vmask; /* bitmask with value types */
928 uint32_t set; /* set table is in */
929 uint32_t kidx; /* kernel index */
930 uint32_t refcnt; /* number of references */
931 uint32_t count; /* Number of records */
932 uint32_t size; /* Total size of records(export)*/
933 uint32_t limit; /* Max number of records */
934 char tablename[64]; /* table name */
935 char algoname[64]; /* algorithm name */
936 ipfw_ta_tinfo ta_info; /* additional algo stats */
938 /* Generic table flags */
939 #define IPFW_TGFLAGS_LOCKED 0x01 /* Tables is locked from changes*/
940 /* Table type-specific flags */
941 #define IPFW_TFFLAG_SRCIP 0x01
942 #define IPFW_TFFLAG_DSTIP 0x02
943 #define IPFW_TFFLAG_SRCPORT 0x04
944 #define IPFW_TFFLAG_DSTPORT 0x08
945 #define IPFW_TFFLAG_PROTO 0x10
946 /* Table modification flags */
947 #define IPFW_TMFLAGS_LIMIT 0x0002 /* Change limit value */
948 #define IPFW_TMFLAGS_LOCK 0x0004 /* Change table lock state */
950 typedef struct _ipfw_iface_info {
951 char ifname[64]; /* interface name */
952 uint32_t ifindex; /* interface index */
953 uint32_t flags; /* flags */
954 uint32_t refcnt; /* number of references */
955 uint32_t gencnt; /* number of changes */
958 #define IPFW_IFFLAG_RESOLVED 0x01 /* Interface exists */
960 typedef struct _ipfw_ta_info {
961 char algoname[64]; /* algorithm name */
962 uint32_t type; /* lookup type */
969 typedef struct _ipfw_obj_header {
970 ip_fw3_opheader opheader; /* IP_FW3 opcode */
972 uint16_t idx; /* object name index */
973 uint8_t objtype; /* object type */
974 uint8_t objsubtype; /* object subtype */
975 ipfw_obj_ntlv ntlv; /* object name tlv */
978 typedef struct _ipfw_obj_lheader {
979 ip_fw3_opheader opheader; /* IP_FW3 opcode */
980 uint32_t set_mask; /* disabled set mask */
981 uint32_t count; /* Total objects count */
982 uint32_t size; /* Total size (incl. header) */
983 uint32_t objsize; /* Size of one object */
986 #define IPFW_CFG_GET_STATIC 0x01
987 #define IPFW_CFG_GET_STATES 0x02
988 #define IPFW_CFG_GET_COUNTERS 0x04
989 typedef struct _ipfw_cfg_lheader {
990 ip_fw3_opheader opheader; /* IP_FW3 opcode */
991 uint32_t set_mask; /* enabled set mask */
993 uint32_t flags; /* Request flags */
994 uint32_t size; /* neded buffer size */
999 typedef struct _ipfw_range_header {
1000 ip_fw3_opheader opheader; /* IP_FW3 opcode */
1001 ipfw_range_tlv range;
1002 } ipfw_range_header;
1004 typedef struct _ipfw_sopt_info {
1012 #endif /* _IPFW2_H */