[dpdk-dev] a NIC binding to igb_uio module of DPDK is down

Choi, Sy Jong sy.jong.choi at intel.com
Wed Aug 13 09:11:39 CEST 2014

Hi Mr. Kim,

The port bind with igb_uio will not be seen by the kernel.
May be the status is not active because you DPDK app has not started.

You can run DPDK testpmd, then you will see the NIC LED blinking, you can even control the LED

Network devices using DPDK-compatible driver
0000:00:08.0 'Device 154c' drv=igb_uio unused=
0000:00:09.0 'Device 154c' drv=igb_uio unused=

Network devices using kernel driver
0000:00:03.0 'Virtio network device' if= drv=virtio-pci unused=igb_uio 

Other network devices

Choi, Sy Jong
Platform Application Engineer

-----Original Message-----
From: dev [mailto:dev-bounces at dpdk.org] On Behalf Of BYEONG-GI KIM
Sent: Wednesday, August 13, 2014 12:27 PM
To: dev at dpdk.org; Dpdk-ovs at lists.01.org
Subject: [dpdk-dev] a NIC binding to igb_uio module of DPDK is down


I deployed openstack with dpdk-ovs and I'm now testing it.

The problem is that a NIC which is binding to igb_uio module of DPDK is physically down so that it seems not communicate with the other hosts through the NIC.

The test environment is as below:

OS: RHEL 6 with kernel 3.7.10
Hardware information: Intel Atom Processor C2758, 64GB DDR3, 4x RJ45 Gigabit Ethernet LAN ports, etc.
DPDK version: 1.7.0
ovdk version: 1.1

I checked the NIC's status via ./tools/dpdk_nic_bind.py --status, and it doesn't snow *Active* status:

./tools/dpdk_nic_bind.py --status

Network devices using DPDK-compatible driver ============================================
0000:00:14.1 'Ethernet Connection I354' drv=igb_uio unused=igb

Network devices using kernel driver
0000:00:14.0 'Ethernet Connection I354' if=eth0 drv=igb unused=igb_uio
0000:00:14.2 'Ethernet Connection I354' if=eth2 drv=igb unused=igb_uio
0000:00:14.3 'Ethernet Connection I354' if=eth3 drv=igb unused=igb_uio

Other network devices

The NIC port on the PC doesn't glitter physically, which means it seems not connected physically.

Doesn't the processor support DPDK, or what is causing the problem?

Any comments would be really appreciated.

Best Regards

Byeong-Gi KIM

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