Radius & hotspot attributes

Hi all,

Is there anyone that could help me with what attributes I’d need to setup freeradius accounts for hotspot users (wired and/or wireless).

Basically I want normal username/pw login, but with a limit on the total bytes send+received before disconnect.

I see Xmit-limit & recv-limit, but is there a way to combine them or a total traffic attribute?

Thanks

Ekkas