[dpdk-dev] nic loopback

Liang, Cunming cunming.liang at intel.com
Tue Oct 21 03:18:40 CEST 2014



> -----Original Message-----
> From: dev [mailto:dev-bounces at dpdk.org] On Behalf Of Alex Markuze
> Sent: Tuesday, October 21, 2014 12:24 AM
> To: dev at dpdk.org
> Subject: [dpdk-dev] nic loopback
> 
> Hi,
> I'm trying to send packets from an application to it self, meaning smac  ==
> dmac.
> I'm working with intel 82599 virtual function. But it seems that these
> packets are lost.
> 
> Is there a software/hw limitation I'm missing here (some additional
> anti-spoofing)? AFAIK modern NICs with sriov are mini switches so the hw
> loopback should work, at least thats the theory.
> 
[Liang, Cunming] You could have a check on register LLE(PFVMTXSW[n]).
Which allow an individual pool to be able to send traffic and have it loopback to itself.
> 
> Thanks.


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