1#ifndef _IPT_HASHLIMIT_H
2#define _IPT_HASHLIMIT_H
3
4/* timings are in milliseconds. */
5#define IPT_HASHLIMIT_SCALE 10000
6/* 1/10,000 sec period => max of 10,000/sec.  Min rate is then 429490
7   seconds, or one every 59 hours. */
8
9/* details of this structure hidden by the implementation */
10struct ipt_hashlimit_htable;
11
12#define IPT_HASHLIMIT_HASH_DIP	0x0001
13#define IPT_HASHLIMIT_HASH_DPT	0x0002
14#define IPT_HASHLIMIT_HASH_SIP	0x0004
15#define IPT_HASHLIMIT_HASH_SPT	0x0008
16
17struct hashlimit_cfg {
18	u_int32_t mode;	  /* bitmask of IPT_HASHLIMIT_HASH_* */
19	u_int32_t avg;    /* Average secs between packets * scale */
20	u_int32_t burst;  /* Period multiplier for upper limit. */
21
22	/* user specified */
23	u_int32_t size;		/* how many buckets */
24	u_int32_t max;		/* max number of entries */
25	u_int32_t gc_interval;	/* gc interval */
26	u_int32_t expire;	/* when do entries expire? */
27};
28
29struct ipt_hashlimit_info {
30	char name [IFNAMSIZ];		/* name */
31	struct hashlimit_cfg cfg;
32	struct ipt_hashlimit_htable *hinfo;
33
34	/* Used internally by the kernel */
35	union {
36		void *ptr;
37		struct ipt_hashlimit_info *master;
38	} u;
39};
40#endif /*_IPT_HASHLIMIT_H*/
41