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

Nélio Laranjeiro nelio.laranjeiro at 6wind.com
Wed Mar 28 14:49:02 CEST 2018


On Wed, Mar 28, 2018 at 08:20:00PM +0800, Sam wrote:
> 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~

Hi,

I would say you don't have the correct Linux drivers, nor libraries to
make it work with DPDK.
Did you installed Mellanox OFED?  If not take a look at section 19.5.
Prerequisites of the NIC documentation [1].

Regards,

[1] https://dpdk.org/doc/guides-17.05/nics/mlx5.html

-- 
Nélio Laranjeiro
6WIND


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