Hello community, I am working on a project in ns-3(network simulator) where we have a NetDevice implemented called "DpdkNetDevice" which emulates a net device using dpdk. The traffic control module/layer having the qdisc is a part of ns-3 and the transmit ring is a part of the dpdk environment. Both the queues are not in sync and we want to implement flow control between these 2 queues. We have a mechanism where we can signal the tc qdisc to stop and start, but for that, we require to know the empty space in the transmit ring. Can you please help us out with the correct API we should be using? Or is there some mechanism that dpdk has implemented for signaling the upper layers from the transmit ring? We have come across a function called rte_eth_tx_descriptor_status using which we are planning to check the status of the tail to judge if there is empty space. Can you guys help us in any way regarding this?
Thank you Regards