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/* Header file for kernel module to match connection tracking information.
 * GPL (C) 2001  Marc Boucher (marc@mbsi.ca).
 */

#ifndef _IPT_CONNTRACK_H
#define _IPT_CONNTRACK_H

#define IPT_CONNTRACK_STATE_BIT(ctinfo) (1 << ((ctinfo)%IP_CT_IS_REPLY+1))
#define IPT_CONNTRACK_STATE_INVALID (1 << 0)

#define IPT_CONNTRACK_STATE_SNAT (1 << (IP_CT_NUMBER + 1))
#define IPT_CONNTRACK_STATE_DNAT (1 << (IP_CT_NUMBER + 2))

/* flags, invflags: */
#define IPT_CONNTRACK_STATE     0x01
#define IPT_CONNTRACK_PROTO     0x02
#define IPT_CONNTRACK_ORIGSRC   0x04
#define IPT_CONNTRACK_ORIGDST   0x08
#define IPT_CONNTRACK_REPLSRC   0x10
#define IPT_CONNTRACK_REPLDST   0x20
#define IPT_CONNTRACK_STATUS    0x40
#define IPT_CONNTRACK_EXPIRES   0x80

struct ipt_conntrack_info
{
        unsigned int statemask, statusmask;

        struct ip_conntrack_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 /*_IPT_CONNTRACK_H*/