release/src-rt-6.x/linux/linux-2.6/include/linux/netfilter/xt_hashlimit.h

   1 #ifndef _XT_HASHLIMIT_H
   2 #define _XT_HASHLIMIT_H
   3
   4 /* timings are in milliseconds. */
   5 #define XT_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 xt_hashlimit_htable;
  11
  12 #define XT_HASHLIMIT_HASH_DIP   0x0001
  13 #define XT_HASHLIMIT_HASH_DPT   0x0002
  14 #define XT_HASHLIMIT_HASH_SIP   0x0004
  15 #define XT_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 xt_hashlimit_info {
  30         char name [IFNAMSIZ];           /* name */
  31         struct hashlimit_cfg cfg;
  32         struct xt_hashlimit_htable *hinfo;
  33
  34         /* Used internally by the kernel */
  35         union {
  36                 void *ptr;
  37                 struct xt_hashlimit_info *master;
  38         } u;
  39 };
  40 #endif /*_XT_HASHLIMIT_H*/