root/include/uapi/linux/netfilter/xt_recent.h

#ifndef _LINUX_NETFILTER_XT_RECENT_H
#define _LINUX_NETFILTER_XT_RECENT_H 1

#include <linux/types.h>

enum {
        XT_RECENT_CHECK    = 1 << 0,
        XT_RECENT_SET      = 1 << 1,
        XT_RECENT_UPDATE   = 1 << 2,
        XT_RECENT_REMOVE   = 1 << 3,
        XT_RECENT_TTL      = 1 << 4,
        XT_RECENT_REAP     = 1 << 5,

        XT_RECENT_SOURCE   = 0,
        XT_RECENT_DEST     = 1,

        XT_RECENT_NAME_LEN = 200,
};

/* Only allowed with --rcheck and --update */
#define XT_RECENT_MODIFIERS (XT_RECENT_TTL|XT_RECENT_REAP)

#define XT_RECENT_VALID_FLAGS (XT_RECENT_CHECK|XT_RECENT_SET|XT_RECENT_UPDATE|\
                               XT_RECENT_REMOVE|XT_RECENT_TTL|XT_RECENT_REAP)

struct xt_recent_mtinfo {
        __u32 seconds;
        __u32 hit_count;
        __u8 check_set;
        __u8 invert;
        char name[XT_RECENT_NAME_LEN];
        __u8 side;
};

struct xt_recent_mtinfo_v1 {
        __u32 seconds;
        __u32 hit_count;
        __u8 check_set;
        __u8 invert;
        char name[XT_RECENT_NAME_LEN];
        __u8 side;
        union nf_inet_addr mask;
};

#endif /* _LINUX_NETFILTER_XT_RECENT_H */