+++ /dev/null
-/*-
- * Copyright (c) 2002 Luigi Rizzo, Universita` di Pisa
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * $FreeBSD: src/sys/netinet/ip_fw.h,v 1.110.2.6 2008/10/14 08:03:58 rwatson Exp $
- */
-
-#ifndef _IPFW2_H
-#define _IPFW2_H
-
-/*
- * The default rule number. By the design of ip_fw, the default rule
- * is the last one, so its number can also serve as the highest number
- * allowed for a rule. The ip_fw code relies on both meanings of this
- * constant.
- */
-#define IPFW_DEFAULT_RULE 65535
-
-/*
- * The kernel representation of ipfw rules is made of a list of
- * 'instructions' (for all practical purposes equivalent to BPF
- * instructions), which specify which fields of the packet
- * (or its metadata) should be analysed.
- *
- * Each instruction is stored in a structure which begins with
- * "ipfw_insn", and can contain extra fields depending on the
- * instruction type (listed below).
- * Note that the code is written so that individual instructions
- * have a size which is a multiple of 32 bits. This means that, if
- * such structures contain pointers or other 64-bit entities,
- * (there is just one instance now) they may end up unaligned on
- * 64-bit architectures, so the must be handled with care.
- *
- * "enum ipfw_opcodes" are the opcodes supported. We can have up
- * to 256 different opcodes. When adding new opcodes, they should
- * be appended to the end of the opcode list before O_LAST_OPCODE,
- * this will prevent the ABI from being broken, otherwise users
- * will have to recompile ipfw(8) when they update the kernel.
- */
-
-enum ipfw_opcodes { /* arguments (4 byte each) */
- O_NOP,
-
- O_IP_SRC, /* u32 = IP */
- O_IP_SRC_MASK, /* ip = IP/mask */
- O_IP_SRC_ME, /* none */
- O_IP_SRC_SET, /* u32=base, arg1=len, bitmap */
-
- O_IP_DST, /* u32 = IP */
- O_IP_DST_MASK, /* ip = IP/mask */
- O_IP_DST_ME, /* none */
- O_IP_DST_SET, /* u32=base, arg1=len, bitmap */
-
- O_IP_SRCPORT, /* (n)port list:mask 4 byte ea */
- O_IP_DSTPORT, /* (n)port list:mask 4 byte ea */
- O_PROTO, /* arg1=protocol */
-
- O_MACADDR2, /* 2 mac addr:mask */
- O_MAC_TYPE, /* same as srcport */
-
- O_LAYER2, /* none */
- O_IN, /* none */
- O_FRAG, /* none */
-
- O_RECV, /* none */
- O_XMIT, /* none */
- O_VIA, /* none */
-
- O_IPOPT, /* arg1 = 2*u8 bitmap */
- O_IPLEN, /* arg1 = len */
- O_IPID, /* arg1 = id */
-
- O_IPTOS, /* arg1 = id */
- O_IPPRECEDENCE, /* arg1 = precedence << 5 */
- O_IPTTL, /* arg1 = TTL */
-
- O_IPVER, /* arg1 = version */
- O_UID, /* u32 = id */
- O_GID, /* u32 = id */
- O_ESTAB, /* none (tcp established) */
- O_TCPFLAGS, /* arg1 = 2*u8 bitmap */
- O_TCPWIN, /* arg1 = desired win */
- O_TCPSEQ, /* u32 = desired seq. */
- O_TCPACK, /* u32 = desired seq. */
- O_ICMPTYPE, /* u32 = icmp bitmap */
- O_TCPOPTS, /* arg1 = 2*u8 bitmap */
-
- O_VERREVPATH, /* none */
- O_VERSRCREACH, /* none */
-
- O_PROBE_STATE, /* none */
- O_KEEP_STATE, /* none */
- O_LIMIT, /* ipfw_insn_limit */
- O_LIMIT_PARENT, /* dyn_type, not an opcode. */
-
- /*
- * These are really 'actions'.
- */
-
- O_LOG, /* ipfw_insn_log */
- O_PROB, /* u32 = match probability */
-
- O_CHECK_STATE, /* none */
- O_ACCEPT, /* none */
- O_DENY, /* none */
- O_REJECT, /* arg1=icmp arg (same as deny) */
- O_COUNT, /* none */
- O_SKIPTO, /* arg1=next rule number */
- O_PIPE, /* arg1=pipe number */
- O_QUEUE, /* arg1=queue number */
- O_DIVERT, /* arg1=port number */
- O_TEE, /* arg1=port number */
- O_FORWARD_IP, /* fwd sockaddr */
- O_FORWARD_MAC, /* fwd mac */
- O_NAT, /* nope */
- O_REASS, /* none */
-
- /*
- * More opcodes.
- */
- O_IPSEC, /* has ipsec history */
- O_IP_SRC_LOOKUP, /* arg1=table number, u32=value */
- O_IP_DST_LOOKUP, /* arg1=table number, u32=value */
- O_ANTISPOOF, /* none */
- O_JAIL, /* u32 = id */
- O_ALTQ, /* u32 = altq classif. qid */
- O_DIVERTED, /* arg1=bitmap (1:loop, 2:out) */
- O_TCPDATALEN, /* arg1 = tcp data len */
- O_IP6_SRC, /* address without mask */
- O_IP6_SRC_ME, /* my addresses */
- O_IP6_SRC_MASK, /* address with the mask */
- O_IP6_DST,
- O_IP6_DST_ME,
- O_IP6_DST_MASK,
- O_FLOW6ID, /* for flow id tag in the ipv6 pkt */
- O_ICMP6TYPE, /* icmp6 packet type filtering */
- O_EXT_HDR, /* filtering for ipv6 extension header */
- O_IP6,
-
- /*
- * actions for ng_ipfw
- */
- O_NETGRAPH, /* send to ng_ipfw */
- O_NGTEE, /* copy to ng_ipfw */
-
- O_IP4,
-
- O_UNREACH6, /* arg1=icmpv6 code arg (deny) */
-
- O_TAG, /* arg1=tag number */
- O_TAGGED, /* arg1=tag number */
-
- O_SETFIB, /* arg1=FIB number */
- O_FIB, /* arg1=FIB desired fib number */
-
- O_LAST_OPCODE /* not an opcode! */
-};
-
-/*
- * The extension header are filtered only for presence using a bit
- * vector with a flag for each header.
- */
-#define EXT_FRAGMENT 0x1
-#define EXT_HOPOPTS 0x2
-#define EXT_ROUTING 0x4
-#define EXT_AH 0x8
-#define EXT_ESP 0x10
-#define EXT_DSTOPTS 0x20
-#define EXT_RTHDR0 0x40
-#define EXT_RTHDR2 0x80
-
-/*
- * Template for instructions.
- *
- * ipfw_insn is used for all instructions which require no operands,
- * a single 16-bit value (arg1), or a couple of 8-bit values.
- *
- * For other instructions which require different/larger arguments
- * we have derived structures, ipfw_insn_*.
- *
- * The size of the instruction (in 32-bit words) is in the low
- * 6 bits of "len". The 2 remaining bits are used to implement
- * NOT and OR on individual instructions. Given a type, you can
- * compute the length to be put in "len" using F_INSN_SIZE(t)
- *
- * F_NOT negates the match result of the instruction.
- *
- * F_OR is used to build or blocks. By default, instructions
- * are evaluated as part of a logical AND. An "or" block
- * { X or Y or Z } contains F_OR set in all but the last
- * instruction of the block. A match will cause the code
- * to skip past the last instruction of the block.
- *
- * NOTA BENE: in a couple of places we assume that
- * sizeof(ipfw_insn) == sizeof(u_int32_t)
- * this needs to be fixed.
- *
- */
-typedef struct _ipfw_insn { /* template for instructions */
- enum ipfw_opcodes opcode:8;
- u_int8_t len; /* number of 32-bit words */
-#define F_NOT 0x80
-#define F_OR 0x40
-#define F_LEN_MASK 0x3f
-#define F_LEN(cmd) ((cmd)->len & F_LEN_MASK)
-
- u_int16_t arg1;
-} ipfw_insn;
-
-/*
- * The F_INSN_SIZE(type) computes the size, in 4-byte words, of
- * a given type.
- */
-#define F_INSN_SIZE(t) ((sizeof (t))/sizeof(u_int32_t))
-
-#define MTAG_IPFW 1148380143 /* IPFW-tagged cookie */
-
-/*
- * This is used to store an array of 16-bit entries (ports etc.)
- */
-typedef struct _ipfw_insn_u16 {
- ipfw_insn o;
- u_int16_t ports[2]; /* there may be more */
-} ipfw_insn_u16;
-
-/*
- * This is used to store an array of 32-bit entries
- * (uid, single IPv4 addresses etc.)
- */
-typedef struct _ipfw_insn_u32 {
- ipfw_insn o;
- u_int32_t d[1]; /* one or more */
-} ipfw_insn_u32;
-
-/*
- * This is used to store IP addr-mask pairs.
- */
-typedef struct _ipfw_insn_ip {
- ipfw_insn o;
- struct in_addr addr;
- struct in_addr mask;
-} ipfw_insn_ip;
-
-/*
- * This is used to forward to a given address (ip).
- */
-typedef struct _ipfw_insn_sa {
- ipfw_insn o;
- struct sockaddr_in sa;
-} ipfw_insn_sa;
-
-/*
- * This is used for MAC addr-mask pairs.
- */
-typedef struct _ipfw_insn_mac {
- ipfw_insn o;
- u_char addr[12]; /* dst[6] + src[6] */
- u_char mask[12]; /* dst[6] + src[6] */
-} ipfw_insn_mac;
-
-/*
- * This is used for interface match rules (recv xx, xmit xx).
- */
-typedef struct _ipfw_insn_if {
- ipfw_insn o;
- union {
- struct in_addr ip;
- int glob;
- } p;
- char name[IFNAMSIZ];
-} ipfw_insn_if;
-
-/*
- * This is used for storing an altq queue id number.
- */
-typedef struct _ipfw_insn_altq {
- ipfw_insn o;
- u_int32_t qid;
-} ipfw_insn_altq;
-
-/*
- * This is used for limit rules.
- */
-typedef struct _ipfw_insn_limit {
- ipfw_insn o;
- u_int8_t _pad;
- u_int8_t limit_mask; /* combination of DYN_* below */
-#define DYN_SRC_ADDR 0x1
-#define DYN_SRC_PORT 0x2
-#define DYN_DST_ADDR 0x4
-#define DYN_DST_PORT 0x8
-
- u_int16_t conn_limit;
-} ipfw_insn_limit;
-
-/*
- * This is used for log instructions.
- */
-typedef struct _ipfw_insn_log {
- ipfw_insn o;
- u_int32_t max_log; /* how many do we log -- 0 = all */
- u_int32_t log_left; /* how many left to log */
-} ipfw_insn_log;
-
-/*
- * Data structures required by both ipfw(8) and ipfw(4) but not part of the
- * management API are protected by IPFW_INTERNAL.
- */
-#ifdef IPFW_INTERNAL
-/* Server pool support (LSNAT). */
-struct cfg_spool {
- LIST_ENTRY(cfg_spool) _next; /* chain of spool instances */
- struct in_addr addr;
- u_short port;
-};
-#endif
-
-/* Redirect modes id. */
-#define REDIR_ADDR 0x01
-#define REDIR_PORT 0x02
-#define REDIR_PROTO 0x04
-
-#ifdef IPFW_INTERNAL
-/* Nat redirect configuration. */
-struct cfg_redir {
- LIST_ENTRY(cfg_redir) _next; /* chain of redir instances */
- u_int16_t mode; /* type of redirect mode */
- struct in_addr laddr; /* local ip address */
- struct in_addr paddr; /* public ip address */
- struct in_addr raddr; /* remote ip address */
- u_short lport; /* local port */
- u_short pport; /* public port */
- u_short rport; /* remote port */
- u_short pport_cnt; /* number of public ports */
- u_short rport_cnt; /* number of remote ports */
- int proto; /* protocol: tcp/udp */
- struct alias_link **alink;
- /* num of entry in spool chain */
- u_int16_t spool_cnt;
- /* chain of spool instances */
- LIST_HEAD(spool_chain, cfg_spool) spool_chain;
-};
-#endif
-
-#define NAT_BUF_LEN 1024
-
-#ifdef IPFW_INTERNAL
-/* Nat configuration data struct. */
-struct cfg_nat {
- /* chain of nat instances */
- LIST_ENTRY(cfg_nat) _next;
- int id; /* nat id */
- struct in_addr ip; /* nat ip address */
- char if_name[IF_NAMESIZE]; /* interface name */
- int mode; /* aliasing mode */
- struct libalias *lib; /* libalias instance */
- /* number of entry in spool chain */
- int redir_cnt;
- /* chain of redir instances */
- LIST_HEAD(redir_chain, cfg_redir) redir_chain;
-};
-#endif
-
-#define SOF_NAT sizeof(struct cfg_nat)
-#define SOF_REDIR sizeof(struct cfg_redir)
-#define SOF_SPOOL sizeof(struct cfg_spool)
-
-/* Nat command. */
-typedef struct _ipfw_insn_nat {
- ipfw_insn o;
- struct cfg_nat *nat;
-} ipfw_insn_nat;
-
-/* Apply ipv6 mask on ipv6 addr */
-#define APPLY_MASK(addr,mask) \
- (addr)->__u6_addr.__u6_addr32[0] &= (mask)->__u6_addr.__u6_addr32[0]; \
- (addr)->__u6_addr.__u6_addr32[1] &= (mask)->__u6_addr.__u6_addr32[1]; \
- (addr)->__u6_addr.__u6_addr32[2] &= (mask)->__u6_addr.__u6_addr32[2]; \
- (addr)->__u6_addr.__u6_addr32[3] &= (mask)->__u6_addr.__u6_addr32[3];
-
-/* Structure for ipv6 */
-typedef struct _ipfw_insn_ip6 {
- ipfw_insn o;
- struct in6_addr addr6;
- struct in6_addr mask6;
-} ipfw_insn_ip6;
-
-/* Used to support icmp6 types */
-typedef struct _ipfw_insn_icmp6 {
- ipfw_insn o;
- uint32_t d[7]; /* XXX This number si related to the netinet/icmp6.h
- * define ICMP6_MAXTYPE
- * as follows: n = ICMP6_MAXTYPE/32 + 1
- * Actually is 203
- */
-} ipfw_insn_icmp6;
-
-/*
- * Here we have the structure representing an ipfw rule.
- *
- * It starts with a general area (with link fields and counters)
- * followed by an array of one or more instructions, which the code
- * accesses as an array of 32-bit values.
- *
- * Given a rule pointer r:
- *
- * r->cmd is the start of the first instruction.
- * ACTION_PTR(r) is the start of the first action (things to do
- * once a rule matched).
- *
- * When assembling instruction, remember the following:
- *
- * + if a rule has a "keep-state" (or "limit") option, then the
- * first instruction (at r->cmd) MUST BE an O_PROBE_STATE
- * + if a rule has a "log" option, then the first action
- * (at ACTION_PTR(r)) MUST be O_LOG
- * + if a rule has an "altq" option, it comes after "log"
- * + if a rule has an O_TAG option, it comes after "log" and "altq"
- *
- * NOTE: we use a simple linked list of rules because we never need
- * to delete a rule without scanning the list. We do not use
- * queue(3) macros for portability and readability.
- */
-
-struct ip_fw {
- struct ip_fw *next; /* linked list of rules */
- struct ip_fw *next_rule; /* ptr to next [skipto] rule */
- /* 'next_rule' is used to pass up 'set_disable' status */
-
- u_int16_t act_ofs; /* offset of action in 32-bit units */
- u_int16_t cmd_len; /* # of 32-bit words in cmd */
- u_int16_t rulenum; /* rule number */
- u_int8_t set; /* rule set (0..31) */
-#define RESVD_SET 31 /* set for default and persistent rules */
- u_int8_t _pad; /* padding */
-
- /* These fields are present in all rules. */
- u_int64_t pcnt; /* Packet counter */
- u_int64_t bcnt; /* Byte counter */
- u_int32_t timestamp; /* tv_sec of last match */
-
- ipfw_insn cmd[1]; /* storage for commands */
-};
-
-#define ACTION_PTR(rule) \
- (ipfw_insn *)( (u_int32_t *)((rule)->cmd) + ((rule)->act_ofs) )
-
-#define RULESIZE(rule) (sizeof(struct ip_fw) + \
- ((struct ip_fw *)(rule))->cmd_len * 4 - 4)
-
-/*
- * This structure is used as a flow mask and a flow id for various
- * parts of the code.
- */
-struct ipfw_flow_id {
- u_int32_t dst_ip;
- u_int32_t src_ip;
- u_int16_t dst_port;
- u_int16_t src_port;
- u_int8_t fib;
- u_int8_t proto;
- u_int8_t flags; /* protocol-specific flags */
- uint8_t addr_type; /* 4 = ipv4, 6 = ipv6, 1=ether ? */
- struct in6_addr dst_ip6; /* could also store MAC addr! */
- struct in6_addr src_ip6;
- u_int32_t flow_id6;
- u_int32_t frag_id6;
-};
-
-#define IS_IP6_FLOW_ID(id) ((id)->addr_type == 6)
-
-/*
- * Dynamic ipfw rule.
- */
-typedef struct _ipfw_dyn_rule ipfw_dyn_rule;
-
-struct _ipfw_dyn_rule {
- ipfw_dyn_rule *next; /* linked list of rules. */
- struct ip_fw *rule; /* pointer to rule */
- /* 'rule' is used to pass up the rule number (from the parent) */
-
- ipfw_dyn_rule *parent; /* pointer to parent rule */
- u_int64_t pcnt; /* packet match counter */
- u_int64_t bcnt; /* byte match counter */
- struct ipfw_flow_id id; /* (masked) flow id */
- u_int32_t expire; /* expire time */
- u_int32_t bucket; /* which bucket in hash table */
- u_int32_t state; /* state of this rule (typically a
- * combination of TCP flags)
- */
- u_int32_t ack_fwd; /* most recent ACKs in forward */
- u_int32_t ack_rev; /* and reverse directions (used */
- /* to generate keepalives) */
- u_int16_t dyn_type; /* rule type */
- u_int16_t count; /* refcount */
-};
-
-/*
- * Definitions for IP option names.
- */
-#define IP_FW_IPOPT_LSRR 0x01
-#define IP_FW_IPOPT_SSRR 0x02
-#define IP_FW_IPOPT_RR 0x04
-#define IP_FW_IPOPT_TS 0x08
-
-/*
- * Definitions for TCP option names.
- */
-#define IP_FW_TCPOPT_MSS 0x01
-#define IP_FW_TCPOPT_WINDOW 0x02
-#define IP_FW_TCPOPT_SACK 0x04
-#define IP_FW_TCPOPT_TS 0x08
-#define IP_FW_TCPOPT_CC 0x10
-
-#define ICMP_REJECT_RST 0x100 /* fake ICMP code (send a TCP RST) */
-#define ICMP6_UNREACH_RST 0x100 /* fake ICMPv6 code (send a TCP RST) */
-
-/*
- * These are used for lookup tables.
- */
-typedef struct _ipfw_table_entry {
- in_addr_t addr; /* network address */
- u_int32_t value; /* value */
- u_int16_t tbl; /* table number */
- u_int8_t masklen; /* mask length */
-} ipfw_table_entry;
-
-typedef struct _ipfw_table {
- u_int32_t size; /* size of entries in bytes */
- u_int32_t cnt; /* # of entries */
- u_int16_t tbl; /* table number */
- ipfw_table_entry ent[0]; /* entries */
-} ipfw_table;
-
-#define IP_FW_TABLEARG 65535
-
-/*
- * Main firewall chains definitions and global var's definitions.
- */
-#ifdef _KERNEL
-
-/* Return values from ipfw_chk() */
-enum {
- IP_FW_PASS = 0,
- IP_FW_DENY,
- IP_FW_DIVERT,
- IP_FW_TEE,
- IP_FW_DUMMYNET,
- IP_FW_NETGRAPH,
- IP_FW_NGTEE,
- IP_FW_NAT,
- IP_FW_REASS,
-};
-
-/* flags for divert mtag */
-#define IP_FW_DIVERT_LOOPBACK_FLAG 0x00080000
-#define IP_FW_DIVERT_OUTPUT_FLAG 0x00100000
-
-/*
- * Structure for collecting parameters to dummynet for ip6_output forwarding
- */
-struct _ip6dn_args {
- struct ip6_pktopts *opt_or;
- struct route_in6 ro_or;
- int flags_or;
- struct ip6_moptions *im6o_or;
- struct ifnet *origifp_or;
- struct ifnet *ifp_or;
- struct sockaddr_in6 dst_or;
- u_long mtu_or;
- struct route_in6 ro_pmtu_or;
-};
-
-/*
- * Arguments for calling ipfw_chk() and dummynet_io(). We put them
- * all into a structure because this way it is easier and more
- * efficient to pass variables around and extend the interface.
- */
-struct ip_fw_args {
- struct mbuf *m; /* the mbuf chain */
- struct ifnet *oif; /* output interface */
- struct sockaddr_in *next_hop; /* forward address */
- struct ip_fw *rule; /* matching rule */
- struct ether_header *eh; /* for bridged packets */
-
- struct ipfw_flow_id f_id; /* grabbed from IP header */
- u_int32_t cookie; /* a cookie depending on rule action */
- struct inpcb *inp;
-
- struct _ip6dn_args dummypar; /* dummynet->ip6_output */
- struct sockaddr_in hopstore; /* store here if cannot use a pointer */
-};
-
-/*
- * Function definitions.
- */
-
-/* Firewall hooks */
-struct sockopt;
-struct dn_flow_set;
-
-int ipfw_check_in(void *, struct mbuf **, struct ifnet *, int, struct inpcb *inp);
-int ipfw_check_out(void *, struct mbuf **, struct ifnet *, int, struct inpcb *inp);
-
-int ipfw_chk(struct ip_fw_args *);
-
-int ipfw_init(void);
-void ipfw_destroy(void);
-
-typedef int ip_fw_ctl_t(struct sockopt *);
-extern ip_fw_ctl_t *ip_fw_ctl_ptr;
-extern int fw_one_pass;
-extern int fw_enable;
-#ifdef INET6
-extern int fw6_enable;
-#endif
-
-/* For kernel ipfw_ether and ipfw_bridge. */
-typedef int ip_fw_chk_t(struct ip_fw_args *args);
-extern ip_fw_chk_t *ip_fw_chk_ptr;
-#define IPFW_LOADED (ip_fw_chk_ptr != NULL)
-
-#ifdef IPFW_INTERNAL
-
-#define IPFW_TABLES_MAX 128
-struct ip_fw_chain {
- struct ip_fw *rules; /* list of rules */
- struct ip_fw *reap; /* list of rules to reap */
- LIST_HEAD(, cfg_nat) nat; /* list of nat entries */
- struct radix_node_head *tables[IPFW_TABLES_MAX];
- struct rwlock rwmtx;
-};
-#define IPFW_LOCK_INIT(_chain) \
- rw_init(&(_chain)->rwmtx, "IPFW static rules")
-#define IPFW_LOCK_DESTROY(_chain) rw_destroy(&(_chain)->rwmtx)
-#define IPFW_WLOCK_ASSERT(_chain) rw_assert(&(_chain)->rwmtx, RA_WLOCKED)
-
-#define IPFW_RLOCK(p) rw_rlock(&(p)->rwmtx)
-#define IPFW_RUNLOCK(p) rw_runlock(&(p)->rwmtx)
-#define IPFW_WLOCK(p) rw_wlock(&(p)->rwmtx)
-#define IPFW_WUNLOCK(p) rw_wunlock(&(p)->rwmtx)
-
-#define LOOKUP_NAT(l, i, p) do { \
- LIST_FOREACH((p), &(l.nat), _next) { \
- if ((p)->id == (i)) { \
- break; \
- } \
- } \
- } while (0)
-
-typedef int ipfw_nat_t(struct ip_fw_args *, struct cfg_nat *, struct mbuf *);
-typedef int ipfw_nat_cfg_t(struct sockopt *);
-#endif
-
-#endif /* _KERNEL */
-#endif /* _IPFW2_H */
git://git.onelab.eu / ipfw.git / blobdiff