iptables-1.3.2-20050720

[iptables.git] / include / linux / netfilter_ipv4 / ipt_hashlimit.h

diff --git a/include/linux/netfilter_ipv4/ipt_hashlimit.h b/include/linux/netfilter_ipv4/ipt_hashlimit.h
new file mode 100644 (file)
index 0000000..ac2cb64
--- /dev/null
+++ b/include/linux/netfilter_ipv4/ipt_hashlimit.h
@@ -0,0 +1,40 @@
+#ifndef _IPT_HASHLIMIT_H
+#define _IPT_HASHLIMIT_H
+
+/* timings are in milliseconds. */
+#define IPT_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 ipt_hashlimit_htable;
+
+#define IPT_HASHLIMIT_HASH_DIP 0x0001
+#define IPT_HASHLIMIT_HASH_DPT 0x0002
+#define IPT_HASHLIMIT_HASH_SIP 0x0004
+#define IPT_HASHLIMIT_HASH_SPT 0x0008
+
+struct hashlimit_cfg {
+       u_int32_t mode;   /* bitmask of IPT_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 ipt_hashlimit_info {
+       char name [IFNAMSIZ];           /* name */
+       struct hashlimit_cfg cfg;
+       struct ipt_hashlimit_htable *hinfo;
+
+       /* Used internally by the kernel */
+       union {
+               void *ptr;
+               struct ipt_hashlimit_info *master;
+       } u;
+};
+#endif /*_IPT_HASHLIMIT_H*/