On Tue, May 23, 2017 at 05:39:36AM +0000, Wu, Xiaoban wrote: > 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 > reboot > 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.
Seems like the issue is not related to your mlx5 device. From the above log it appears that you also have a bnxt device on that system which DPDK detects and attempts to use as it is running in blacklist mode. Perhaps that device was not configured properly. Try to white-list the devices you want to use by explicitly providing their PCI bus addresses through -w arguments instead. -- Adrien Mazarguil 6WIND
