IXGBE_ATR_L4TYPE_TUNNEL_MASK
tunnel = !!(input.formatted.flow_type & IXGBE_ATR_L4TYPE_TUNNEL_MASK);
(IXGBE_ATR_L4TYPE_TUNNEL_MASK - 1);
if (input->formatted.flow_type & IXGBE_ATR_L4TYPE_TUNNEL_MASK)