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/* Header file for kernel module to match connection tracking information.
* GPL (C) 2001 Marc Boucher (marc@mbsi.ca).
*/
#ifndef _XT_CONNTRACK_H
#define _XT_CONNTRACK_H
#include <linux/netfilter/nf_conntrack_tuple_common.h>
#include <linux/in.h>
#define XT_CONNTRACK_STATE_BIT(ctinfo) (1 << ((ctinfo)%IP_CT_IS_REPLY+1))
#define XT_CONNTRACK_STATE_INVALID (1 << 0)
#define XT_CONNTRACK_STATE_SNAT (1 << (IP_CT_NUMBER + 1))
#define XT_CONNTRACK_STATE_DNAT (1 << (IP_CT_NUMBER + 2))
#define XT_CONNTRACK_STATE_UNTRACKED (1 << (IP_CT_NUMBER + 3))
/* flags, invflags: */
#define XT_CONNTRACK_STATE 0x01
#define XT_CONNTRACK_PROTO 0x02
#define XT_CONNTRACK_ORIGSRC 0x04
#define XT_CONNTRACK_ORIGDST 0x08
#define XT_CONNTRACK_REPLSRC 0x10
#define XT_CONNTRACK_REPLDST 0x20
#define XT_CONNTRACK_STATUS 0x40
#define XT_CONNTRACK_EXPIRES 0x80
/* This is exposed to userspace, so remains frozen in time. */
struct ip_conntrack_old_tuple
{
struct {
__u32 ip;
union {
__u16 all;
} u;
} src;
struct {
__u32 ip;
union {
__u16 all;
} u;
/* The protocol. */
__u16 protonum;
} dst;
};
struct xt_conntrack_info
{
unsigned int statemask, statusmask;
struct ip_conntrack_old_tuple tuple[IP_CT_DIR_MAX];
struct in_addr sipmsk[IP_CT_DIR_MAX], dipmsk[IP_CT_DIR_MAX];
unsigned long expires_min, expires_max;
/* Flags word */
u_int8_t flags;
/* Inverse flags */
u_int8_t invflags;
};
#endif /*_XT_CONNTRACK_H*/
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