[dpdk-dev] Under Ovs-2.8.0 + DPDK-17.05-rc1, can't add port which using mlx5 driver onto bridge br0

[Sam]

Hi all,

I'm using Ovs-2.8.0 + DPDK-17.05-rc1 with two netdev using mlx5 driver,
like this:

$ sudo /usr/local/share/openvswitch/scripts/dpdk_nic_bind --status
> Network devices using DPDK-compatible driver
> ============================================
> <none>
> Network devices using kernel driver
> ===================================
> ...
> 0000:03:00.0 'MT27640 Family' if=eth4 drv=mlx5_core unused=igb_uio
> 0000:03:00.1 'MT27640 Family' if=eth5 drv=mlx5_core unused=igb_uio
> 0000:03:00.2 'MT27641 Family' if=enp3s0f2 drv=mlx5_core unused=igb_uio
> *Active*
> ...
> =====================
> <none>


When I start ovs-vswitchd, and add port onto br0, I got errors like this:

libibverbs: Warning: no userspace device-specific driver found for
> /sys/class/infiniband_verbs/uverbs2


and git errors in ovs-vswitchd.log like this:

2018-03-28T09:34:25.687Z|00120|dpdk|INFO|EAL: PCI device 0000:03:00.0 on
> NUMA socket 0
> 2018-03-28T09:34:25.687Z|00121|dpdk|INFO|EAL:   probe driver: 15b3:1017
> net_mlx5
> 2018-03-28T09:34:25.687Z|00122|dpdk|WARN|EAL: Requested device
> 0000:03:00.0 cannot be used
> 2018-03-28T09:34:25.687Z|00123|dpdk|ERR|EAL: Driver cannot attach the
> device (0000:03:00.0)
> 2018-03-28T09:34:25.687Z|00124|netdev_dpdk|WARN|Error attaching device
> '0000:03:00.0' to DPDK
> 2018-03-28T09:34:25.687Z|00125|netdev|WARN|dpdk0: could not set
> configuration (Invalid argument)


How to fix this bug? Is there anyone got these errors? Thank you~