[NETFILTER]: x_tables: add statistic match

Add statistic match which is a combination of the nth and random matches.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 32 insertions, 0 deletions

diff --git a/include/linux/netfilter/xt_statistic.h b/include/linux/netfilter/xt_statistic.h
new file mode 100644
index 000000000000..c344e9916e23
--- /dev/null
+++ b/include/linux/netfilter/xt_statistic.h
@@ -0,0 +1,32 @@
+#ifndef _XT_STATISTIC_H
+#define _XT_STATISTIC_H
+
+enum xt_statistic_mode {
+        XT_STATISTIC_MODE_RANDOM,
+        XT_STATISTIC_MODE_NTH,
+        __XT_STATISTIC_MODE_MAX
+};
+#define XT_STATISTIC_MODE_MAX (__XT_STATISTIC_MODE_MAX - 1)
+
+enum xt_statistic_flags {
+        XT_STATISTIC_INVERT             = 0x1,
+};
+#define XT_STATISTIC_MASK               0x1
+
+struct xt_statistic_info {
+        u_int16_t                       mode;
+        u_int16_t                       flags;
+        union {
+                struct {
+                        u_int32_t       probability;
+                } random;
+                struct {
+                        u_int32_t       every;
+                        u_int32_t       packet;
+                        u_int32_t       count;
+                } nth;
+        } u;
+        struct xt_statistic_info        *master __attribute__((aligned(8)));
+};
+
+#endif /* _XT_STATISTIC_H */