Detecting whether a network interface is an SRIOV nic

[Baruch Siach]

HI Dan,

On Tue, May 27, 2014 at 09:43:27PM +0300, Dan Shimshoni wrote:
> Is there a way to detecting whether a network interface is an SRIOV nic
> in a given machine (by some userspace command )?
> 
> To be more specific:
> I know of course that you can find the name of the driver and google for
> its feature, but is there some userspace tool which can check it ?

According to Documentation/PCI/pci-iov-howto.txt newer SR-IOV supporting 
drivers should have a sriov_numvfs sysfs node under 
/sys/bus/pci/devices/<DOMAIN:BUS:DEVICE.FUNCTION>/. The presence of this node 
is surely and indication that the device supports SR-IOV.

baruch

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