Device only sends out one packet. Problem with netif queues?

I've been modifying drivers/net/ethoc.c for my specific application.

At this point, I get one packet to come out of the device (A DHCP packet since udhcpc is started on boot). However, after that no other packets are being sent out.

Could this be a problem in the way I've set up the queues? Or is there another area in the code I should look at (e.g. napi stuff, phy related, etc)?

This could be because I am not getting a 'transmit done' interrupt from my hardware which I am still trying to fix. But I thought it should still be sending out the packets right? Even though it doesn't receive an ack from hardware?

Thanks for any help.