1 #ifndef _XT_HASHLIMIT_H 2 #define _XT_HASHLIMIT_H 3 4 #include <linux/types.h> 5 6 /* timings are in milliseconds. */ 7 #define XT_HASHLIMIT_SCALE 10000 8 /* 1/10,000 sec period => max of 10,000/sec. Min rate is then 429490 9 seconds, or one every 59 hours. */ 10 11 /* details of this structure hidden by the implementation */ 12 struct xt_hashlimit_htable; 13 14 enum { 15 XT_HASHLIMIT_HASH_DIP = 1 << 0, 16 XT_HASHLIMIT_HASH_DPT = 1 << 1, 17 XT_HASHLIMIT_HASH_SIP = 1 << 2, 18 XT_HASHLIMIT_HASH_SPT = 1 << 3, 19 XT_HASHLIMIT_INVERT = 1 << 4, 20 }; 21 22 struct hashlimit_cfg { 23 __u32 mode; /* bitmask of XT_HASHLIMIT_HASH_* */ 24 __u32 avg; /* Average secs between packets * scale */ 25 __u32 burst; /* Period multiplier for upper limit. */ 26 27 /* user specified */ 28 __u32 size; /* how many buckets */ 29 __u32 max; /* max number of entries */ 30 __u32 gc_interval; /* gc interval */ 31 __u32 expire; /* when do entries expire? */ 32 }; 33 34 struct xt_hashlimit_info { 35 char name [IFNAMSIZ]; /* name */ 36 struct hashlimit_cfg cfg; 37 38 /* Used internally by the kernel */ 39 struct xt_hashlimit_htable *hinfo; 40 union { 41 void *ptr; 42 struct xt_hashlimit_info *master; 43 } u; 44 }; 45 46 struct hashlimit_cfg1 { 47 __u32 mode; /* bitmask of XT_HASHLIMIT_HASH_* */ 48 __u32 avg; /* Average secs between packets * scale */ 49 __u32 burst; /* Period multiplier for upper limit. */ 50 51 /* user specified */ 52 __u32 size; /* how many buckets */ 53 __u32 max; /* max number of entries */ 54 __u32 gc_interval; /* gc interval */ 55 __u32 expire; /* when do entries expire? */ 56 57 __u8 srcmask, dstmask; 58 }; 59 60 struct xt_hashlimit_mtinfo1 { 61 char name[IFNAMSIZ]; 62 struct hashlimit_cfg1 cfg; 63 64 /* Used internally by the kernel */ 65 struct xt_hashlimit_htable *hinfo __attribute__((aligned(8))); 66 }; 67 68 #endif /*_XT_HASHLIMIT_H*/ 69