Hello I have implemented pingpong for DPDK. with the client sending the packets and the server receiving the packets and then returning them.
The server part is implemented similar to the L2 forwarding sample in the DPDK official website. While doing the L2 forwarding I have noticed that there are packet losses while I forward the the packets from the receiver queue to the transfer queue. My question is ... is there a way to make the packet loss into zero? I could not find the solution to this since the sample applications from DPDK website all have packet losses. the packet losses are counted by the callback function below rte_eth_tx_buffer_set_err_callback(tx_buffer[portid], rte_eth_tx_buffer_count_callback, &port_statistics[portid].dropped); this is the result I have from the L2 forwarding Port statistics ==================================== Statistics for port 0 ------------------------------ Packets sent: 384126 Packets received: 379889 Packets dropped: 4237 Aggregate statistics =============================== Total packets sent: 384126 Total packets received: 379889 Total packets dropped: 4237 ==================================================== since my implementation is just pingpong and have very simple implementation, I don't believe that there should be any packet losses in my case. Thank you for reading this letter Sungho Hong
