Add define PF_RING_FLOW_UPDATE_CAUSE_PERIODIC

Author: cardigliano

kernel/linux/pf_ring.h

@@ -717,11 +717,12 @@ typedef struct {
   u_int16_t dst_port;
 #endif
 
-#define PF_RING_FLOW_UPDATE_CAUSE_SW 0
-#define PF_RING_FLOW_UPDATE_CAUSE_TIMEOUT 1
+#define PF_RING_FLOW_UPDATE_CAUSE_SW       0
+#define PF_RING_FLOW_UPDATE_CAUSE_TIMEOUT  1
 #define PF_RING_FLOW_UPDATE_CAUSE_TCP_TERM 2
-#define PF_RING_FLOW_UPDATE_CAUSE_PROBE 4
-#define PF_RING_FLOW_UPDATE_CAUSE_UNKNOWN 5
+#define PF_RING_FLOW_UPDATE_CAUSE_PERIODIC 3
+#define PF_RING_FLOW_UPDATE_CAUSE_PROBE    4
+#define PF_RING_FLOW_UPDATE_CAUSE_UNKNOWN  5
   u_int8_t cause;
   u_int8_t reserved0;
   u_int16_t reserved1;