Need to authenticate station added to an AP by AAA Server (Freeradius) through an Access Controller

Hi All,

I want to authenticate all stations which are connected to an AP (Access point) by an AAA Server (Which is Freeradius) through an Access Controller.

Stations ----> Access Point ----> Access Controller ----> AAA Server (Freeradius)

Access point is an OpenWRT supported and AC is OpenCAPWAP Supported which also support OpenWRT.

I was able to test:
stations ----> AP ----> AAA Server but I am not able to do above setup.

Please can anyone help me in this?

Thanks in advance.