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#ifndef _XT_HASHLIMIT_H
#define _XT_HASHLIMIT_H
/* timings are in milliseconds. */
#define XT_HASHLIMIT_SCALE 10000
/* 1/10,000 sec period => max of 10,000/sec. Min rate is then 429490
seconds, or one every 59 hours. */
/* 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,
};
struct hashlimit_cfg {
u_int32_t mode; /* bitmask of XT_HASHLIMIT_HASH_* */
u_int32_t avg; /* Average secs between packets * scale */
u_int32_t burst; /* Period multiplier for upper limit. */
/* user specified */
u_int32_t size; /* how many buckets */
u_int32_t max; /* max number of entries */
u_int32_t gc_interval; /* gc interval */
u_int32_t 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 {
u_int32_t mode; /* bitmask of XT_HASHLIMIT_HASH_* */
u_int32_t avg; /* Average secs between packets * scale */
u_int32_t burst; /* Period multiplier for upper limit. */
/* user specified */
u_int32_t size; /* how many buckets */
u_int32_t max; /* max number of entries */
u_int32_t gc_interval; /* gc interval */
u_int32_t expire; /* when do entries expire? */
u_int8_t 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)));
};
#endif /*_XT_HASHLIMIT_H*/
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