* [dpdk-dev] Unable to bind Virtio_pci in DPDK1.7
@ 2015-05-29 5:22 Dey, Souvik
2015-05-29 5:34 ` Ouyang, Changchun
0 siblings, 1 reply; 2+ messages in thread
From: Dey, Souvik @ 2015-05-29 5:22 UTC (permalink / raw)
To: dev
Hi All,
I am currently facing a weird issue where I am not able to bind the virtio_pci device to igb_uio in DPDK1.7 on QEMU/KVM. I can see there are two fold issues.
1.The pci_unbind.py script where the virt_path is removed from 1.6 to 1.7 version due to which the initial status is not able to show any interface name.
Network devices using DPDK-compatible driver
============================================
<none>
Network devices using kernel driver
===================================
0000:00:03.0 'Virtio network device' if= drv=virtio-pci unused=virtio_pci,igb_uio
0000:00:04.0 'Virtio network device' if= drv=virtio-pci unused=virtio_pci,igb_uio
0000:00:05.0 'Virtio network device' if= drv=virtio-pci unused=virtio_pci,igb_uio
0000:00:06.0 'Virtio network device' if= drv=virtio-pci unused=virtio_pci,igb_uio
Other network devices
=====================
<none>
2. After correcting the above issue , I am stuck where the interface is failing to bind to igb_uio. I tried to bind the interface manually to igb_uio but I am getting the following error
lspci -k
00:05.0 Ethernet controller: Red Hat, Inc Virtio network device
Subsystem: Red Hat, Inc Device 0001
Kernel modules: virtio_pci
echo 0000:00:05.0 > /sys/bus/pci/drivers/igb_uio/bind
-bash: echo: write error: No such device
Due to this the bind fails and the virtio_pmd is not able to take and my app is not coming up.
EAL: PCI device 0000:00:03.0 on NUMA socket -1
EAL: probe driver: 1af4:1000 rte_virtio_pmd
EAL: 0000:00:06.0 not managed by UIO driver, skipping
EAL: Error - exiting with code: 1
Cause: No Ethernet ports - bye
I see lots of email threads on similar issue but none had the final conclusion. So can someone guide me on how to proceed further or get out of this error.
--
Regards,
Souvik
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [dpdk-dev] Unable to bind Virtio_pci in DPDK1.7
2015-05-29 5:22 [dpdk-dev] Unable to bind Virtio_pci in DPDK1.7 Dey, Souvik
@ 2015-05-29 5:34 ` Ouyang, Changchun
0 siblings, 0 replies; 2+ messages in thread
From: Ouyang, Changchun @ 2015-05-29 5:34 UTC (permalink / raw)
To: Dey, Souvik, dev
> -----Original Message-----
> From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Dey, Souvik
> Sent: Friday, May 29, 2015 1:22 PM
> To: dev@dpdk.org
> Subject: [dpdk-dev] Unable to bind Virtio_pci in DPDK1.7
>
> Hi All,
> I am currently facing a weird issue where I am not able to bind the
> virtio_pci device to igb_uio in DPDK1.7 on QEMU/KVM. I can see there are
> two fold issues.
> 1.The pci_unbind.py script where the virt_path is removed from 1.6 to 1.7
> version due to which the initial status is not able to show any interface name.
>
> Network devices using DPDK-compatible driver
> ============================================
> <none>
>
> Network devices using kernel driver
> ===================================
> 0000:00:03.0 'Virtio network device' if= drv=virtio-pci
> unused=virtio_pci,igb_uio
> 0000:00:04.0 'Virtio network device' if= drv=virtio-pci
> unused=virtio_pci,igb_uio
> 0000:00:05.0 'Virtio network device' if= drv=virtio-pci
> unused=virtio_pci,igb_uio
> 0000:00:06.0 'Virtio network device' if= drv=virtio-pci
> unused=virtio_pci,igb_uio
>
> Other network devices
> =====================
> <none>
>
>
> 2. After correcting the above issue , I am stuck where the interface is failing
> to bind to igb_uio. I tried to bind the interface manually to igb_uio but I am
> getting the following error
>
> lspci -k
> 00:05.0 Ethernet controller: Red Hat, Inc Virtio network device
> Subsystem: Red Hat, Inc Device 0001
> Kernel modules: virtio_pci
>
> echo 0000:00:05.0 > /sys/bus/pci/drivers/igb_uio/bind
> -bash: echo: write error: No such device
>
> Due to this the bind fails and the virtio_pmd is not able to take and my app is
> not coming up.
> EAL: PCI device 0000:00:03.0 on NUMA socket -1
> EAL: probe driver: 1af4:1000 rte_virtio_pmd
> EAL: 0000:00:06.0 not managed by UIO driver, skipping
> EAL: Error - exiting with code: 1
> Cause: No Ethernet ports - bye
>
> I see lots of email threads on similar issue but none had the final conclusion.
> So can someone guide me on how to proceed further or get out of this error.
>
Suggest you use the dpdk_nic_bind.py in recently released dpdk package or get it from dpdk.org repo.
I use it to bind virtio-pci device to igb_uio and after that, I bind it reversely from igb_uio back to virtio-pci again.
It works, don't find any issue.
Thanks
Changchun
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