[dpdk-dev] Support for Intel 82579LM (8086:1502)

Mor, Omri omrimor2 at illinois.edu
Fri Oct 13 22:13:36 CEST 2017

Hi Markus,

Thanks for the patch!
I thought that it might only need the support ‘switch’ flipped on, but wasn’t sure.
It seems to work, though I get the following message when testing using `testpmd`:
	EAL: Error enabling MSI-X interrupts for fd 26
I’ve also seen a couple of lost packets, which I wonder if are due to the above.
So I guess it’s missing /something/ to be entirely supported, but with this it does work (at least partially).

> On Oct 13, 2017, at 11:38, Markus Theil <markus.theil at tu-ilmenau.de> wrote:
> Hi,
> I wrote a little patch for you. You can apply it to the current
> dpdk-master branch and test it.
> My Thinkpad T430 has such a NIC and shows some rx packets and the link
> status change with the patch,
> when using testpmd. Maybe 82579LM was not supported for a reason, so
> simply try out if it works for your purpose :)
> Markus
> On 12.10.2017 22:47, Mor, Omri wrote:
>> Hello,
>> I have a computer I’m using for testing DPDK that has an Intel 82579LM.
>> Currently this NIC isn’t supported in DPDK, but I believe it is similar to others that are (such as the 82574L, which I am using successfully on another computer).
>> How much work would be required in getting this up and running—what functionality is missing?
>> I’m currently using it with AF_PACKET (and will try pcap soon), but would be interested in seeing its performance under DPDK ‘native’.
>> Thank you,
>> Omri Mor

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