Ethernet and Interrupts in Virtex II pro

Hello,

Could any body tell me if i can use a OPB ethernet device in polled
mode for sending and in interrupt mode for receiving packets from the
network. I am unable to do that.

Why i am asking this? :

       When i use the ethernet ports in interrupt mode ( i have two of
them), due to the priority i set in the interrupt controller, one of
the ports always has a higher priority. Because of this the FPGA if it
wants to send data using the busy port, it is not able to do so, since
the port is held by the interrupt controller.

An early reply would be really appreciated.

Best regards,
G Aswin