#define VLIB_NODE_FLAG_SWITCH_FROM_INTERRUPT_TO_POLLING_MODE (1 << 6)
#define VLIB_NODE_FLAG_SWITCH_FROM_POLLING_TO_INTERRUPT_MODE (1 << 7)
#define VLIB_NODE_FLAG_TRACE_SUPPORTED (1 << 8)
+#define VLIB_NODE_FLAG_ADAPTIVE_MODE (1 << 9)
/* State for input nodes. */
u8 state;