[dpdk-users] pkts not transmitting with DPDK 2.2.0

[Jesper Wramberg]

Hey Toby,

It seems you are using a VF yes ? I did some testing of SR-IOV a while ago
on an Intel NIC. I remember having to fiddle with it to get it working, so
here are a new notes/questions you might find useful (or maybe not :-)).

Are there any errors in the stats on the physical function (ethtool -S
<linux PF interface>) ?
Since you are receiving packets the MAC is probably correct. But anyway:
Did you check the MAC addresses of the VF using "ip link show <linux PF
interface>" - do they match what DPDK uses ?
Is spoof checking enabled on the PF ?

My tests were with an XL710 only using Linux (no DPDK). To be able to TX
from the VF after changing stuff with "ip link set..." I think I may have
had to reset the VF or PF using "ip link set .. down/up".

I know I'm not exactly providing any answers here - and my memory isn't
helping - but maybe something can point you in the right direction.

Regards,
Jesper


2016-03-26 20:24 GMT+01:00 Toby DiPasquale <toby at cbcg.net>:

> Hi all,
>
> I'm having an issue getting packets to actually transmit out of the
> NIC with DPDK 2.2.0. I've built a simple UDP echo server here:
> https://github.com/codeslinger/udpecho
>
> Packets are received just fine, and they appear to say they are
> transmitted, as well, but they never actually leave the NIC. Here is
> some sample output with the details of how I'm running this:
> https://gist.github.com/codeslinger/d2e59b00bdc1208f4369
>
> I'm kinda stumped. I had a local person with DPDK experience look at
> this code and he was similarly confused as to why it wasn't working.
> Anyone have any ideas on this one? Thanks in advance!
>
> --
> Toby DiPasquale
>