#ifndef _XT_HASHLIMIT_H

#define _XT_HASHLIMIT_H

#include <linux/types.h>

/* timings are in milliseconds. */

#define XT_HASHLIMIT_SCALE 10000

#define XT_HASHLIMIT_SCALE_v2 1000000llu

/* 1/10,000 sec period => max of 10,000/sec.  Min rate is then 429490

 * seconds, or one packet every 59 hours.

 */

/* packet length accounting is done in 16-byte steps */

#define XT_HASHLIMIT_BYTE_SHIFT 4

/* details of this structure hidden by the implementation */

struct xt_hashlimit_htable;

enum {

	XT_HASHLIMIT_HASH_DIP	= 1 << 0,

	XT_HASHLIMIT_HASH_DPT	= 1 << 1,

	XT_HASHLIMIT_HASH_SIP	= 1 << 2,

	XT_HASHLIMIT_HASH_SPT	= 1 << 3,

	XT_HASHLIMIT_INVERT	= 1 << 4,

	XT_HASHLIMIT_BYTES	= 1 << 5,

	XT_HASHLIMIT_RATE_MATCH	= 1 << 6,

};

struct hashlimit_cfg {

	__u32 mode;	  /* bitmask of XT_HASHLIMIT_HASH_* */

	__u32 avg;    /* Average secs between packets * scale */

	__u32 burst;  /* Period multiplier for upper limit. */

	/* user specified */

	__u32 size;		/* how many buckets */

	__u32 max;		/* max number of entries */

	__u32 gc_interval;	/* gc interval */

	__u32 expire;	/* when do entries expire? */

};

struct xt_hashlimit_info {

	char name [IFNAMSIZ];		/* name */

	struct hashlimit_cfg cfg;

	/* Used internally by the kernel */

	struct xt_hashlimit_htable *hinfo;

	union {

		void *ptr;

		struct xt_hashlimit_info *master;

	} u;

};

struct hashlimit_cfg1 {

	__u32 mode;	  /* bitmask of XT_HASHLIMIT_HASH_* */

	__u32 avg;    /* Average secs between packets * scale */

	__u32 burst;  /* Period multiplier for upper limit. */

	/* user specified */

	__u32 size;		/* how many buckets */

	__u32 max;		/* max number of entries */

	__u32 gc_interval;	/* gc interval */

	__u32 expire;	/* when do entries expire? */

	__u8 srcmask, dstmask;

};

struct hashlimit_cfg2 {

	__u64 avg;		/* Average secs between packets * scale */

	__u64 burst;		/* Period multiplier for upper limit. */

	__u32 mode;		/* bitmask of XT_HASHLIMIT_HASH_* */

	/* user specified */

	__u32 size;		/* how many buckets */

	__u32 max;		/* max number of entries */

	__u32 gc_interval;	/* gc interval */

	__u32 expire;		/* when do entries expire? */

	__u8 srcmask, dstmask;

};

struct hashlimit_cfg3 {

	__u64 avg;		/* Average secs between packets * scale */

	__u64 burst;		/* Period multiplier for upper limit. */

	__u32 mode;		/* bitmask of XT_HASHLIMIT_HASH_* */

	/* user specified */

	__u32 size;		/* how many buckets */

	__u32 max;		/* max number of entries */

	__u32 gc_interval;	/* gc interval */

	__u32 expire;		/* when do entries expire? */

	__u32 interval;		/* in seconds*/

	__u8 srcmask, dstmask;

};

struct xt_hashlimit_mtinfo1 {

	char name[IFNAMSIZ];

	struct hashlimit_cfg1 cfg;

	/* Used internally by the kernel */

	struct xt_hashlimit_htable *hinfo __attribute__((aligned(8)));

};

struct xt_hashlimit_mtinfo2 {

	char name[NAME_MAX];

	struct hashlimit_cfg2 cfg;

	/* Used internally by the kernel */

	struct xt_hashlimit_htable *hinfo __attribute__((aligned(8)));

};

struct xt_hashlimit_mtinfo3 {

	char name[NAME_MAX];

	struct hashlimit_cfg3 cfg;

	/* Used internally by the kernel */

	struct xt_hashlimit_htable *hinfo __attribute__((aligned(8)));

};

#endif /*_XT_HASHLIMIT_H*/