[dpdk-users] pkts not transmitting with DPDK 2.2.0

[Toby DiPasquale]

Hi Jesper,

Neither ethtool nor ip return for this NIC:

  # ethtool -S eth1
  Cannot get stats strings information: No such device
  # ip link show eth1
  Device "eth1" does not exist.

The NIC has been disconnected from the OS via dpdk_nic_bind.py. The
MAC addresses do match, also. If the NIC is not visible to the OS, and
I'm not turning spoof checking on in the DPDK app, would the setting
while it is attached to the kernel make a difference?


On Sun, Mar 27, 2016 at 4:57 AM, Jesper Wramberg
<jesper.wramberg at gmail.com> wrote:
> 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
>
>



-- 
Toby DiPasquale