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 */ 10 struct 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 17 struct 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 29 struct 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
