[dpdk-users] rte_eth_tx_burst duplicate packets

Peter Balint peter.balint4 at gmail.com
Wed Jan 23 08:16:22 CET 2019


Hi,

I am just writing my first a traffic generator code.
The program sends predefined quantity of frames(Ethernet/IP/UDP) in each
seconds. It use 2 loops 1 for seconds the other for the packets in each
second.

for sending I use a while loop

                sent=0;
                while (sent==0){
                    sent = rte_eth_tx_burst(eth_id, 0, &pkts, 1);

                }
for reviving
recv = rte_eth_rx_burst(eth_id, 0, pktr_burst2, 10);

in the initialization phase I put the packet in the mbuf. In the UDP data
filed is a counter which increasing in every second(with this I would like
to identify the possible packet drops er sec bases)

with lower load the program works fine but close to 100% of performance

Forward frames sent: 8000000
Forward frames received: 8000336
Reverse frames sent: 8000000
Reverse frames received: 7990793



Results  in 1 sec sent 800000  recvd  799972 and difference -28
Results  in 2 sec sent 800000  recvd  799888 and difference -112
Results  in 3 sec sent 800000  recvd  800000 and difference 0
Results  in 4 sec sent 800000  recvd  800000 and difference 0
Results  in 5 sec sent 800000  recvd  800000 and difference 0
Results  in 6 sec sent 800000  recvd  800000 and difference 0
Results  in 7 sec sent 800000  recvd  800120 and difference 120
Results  in 8 sec sent 800000  recvd  799880 and difference -120
Results  in 9 sec sent 800000  recvd  800000 and difference 0
Results  in 10 sec sent 800000  recvd  800476 and difference 476

It received more packets than sent.

Are there any solution to fix this issue?


Many Thanks,

Peter


More information about the users mailing list