[dpdk-users] Mellanox 100G NIC, VF SR-IOV, docker container, EAL could not detect the device

Wu, Xiaoban Xiaoban_Wu at student.uml.edu
Tue May 23 07:39:36 CEST 2017

Dear DPDK users,

I am trying to use the VF of the Mellanox 100G NIC enabled by SR-IOV. The following is what I have done.

     1. Add "intel_iommu=on iommu=pt" to kernel command line option, update-grub, and reboot

     2. Install the MLNX-OFED, reboot

     3. In default the card is in infiband mode, so I switched it to ethernet mode (in order to run DPDK application) and reboot.

     4. mst start

         mlxconfig -d /dev/mst/mt4115_pciconf0 q #query
         mlxconfig -d /dev/mst/mt4115_pciconf0 set SRIOV_EN=1 NUM_OF_VFS=1
     5. echo 1 > /sys/bus/pci/devices/0000\:83\:00.0/mlx5_num_vfs
     6. modprobe vfio-pci
     7. dpdk-devbind.py --status
     8. dpdk-devbind.py -b vfio-pci 0000:83:00.1
     9. ls -al /dev/vfio
     10. docker run -it --privileged --device=/dev/vfio/54:/dev/vfio/54 --device=/dev/vfio/vfio:/dev/vfio/vfio -v /mnt/huge/:/dev/hugepages/ -v /var/run:/var/run  $IMAGEID bash
     11. $dpdkapp -c 0x01 --socket-mem=128,128 --file-prefix="docker1"

However, in the EAL part, it does not list any usable devices
EAL: Detected 12 lcore(s)
EAL: Probing VFIO support...
EAL: VFIO support initialized
PMD: bnxt_rte_pmd_init() called for (null)
Error, rte_eth_dev_configure() returns negative!

Can anybody please point out any possible solution? Looking forward to your reply. Thanks very much for your help.

Best wishes,

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