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

["Choi, Sy Jong" <sy.jong.choi@intel.com>]

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

Example:-
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
=====================
<none>

Regards,
Choi, Sy Jong
Platform Application Engineer

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

Hello.

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
*Active*
0000:00:14.2 'Ethernet Connection I354' if=eth2 drv=igb unused=igb_uio
*Active*
0000:00:14.3 'Ethernet Connection I354' if=eth3 drv=igb unused=igb_uio

Other network devices
=====================
<none>

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