Hi 
I am verifying the reload function of the mlx5 nic based on dpdk 19.11:
echo 1 > /sys/bus/pci/devices/$pci_address/remove
echo 1 > /sys/bus/pci/rescan
rte_bus_probe();   //
rte_eth_dev_stop(); //
rte_eth_dev_start(); 
    net_mlx5: port 0 TX queue 0 CQ creation failure