Xenial - OpenvSwitch with DPDK binding to 10G NIC, not working...

Christian Ehrhardt christian.ehrhardt at canonical.com
Tue Mar 22 15:43:40 UTC 2016

On Tue, Mar 22, 2016 at 4:12 PM, Martinx - ジェームズ <thiagocmartinsc at gmail.com>

> Hi Christian,
>  Thank you for your support, I really appreciate it!
>  So, in the end of the day, even if a 10G NIC is running with a
> "DPDK-Compatible Driver", this does NOT means that it will work with
> OpenvSwtich!

Well if we consider uio_pci_generic a DPDK-Compatible driver you are right.
Because every pci card can be assigned to it - and clearly not every card
works :-)

>  There are only a very few limited number of NIC cards that are compatible
> with DPDK + PMD, which are required for OpenvSwitch+DPDK to function, if
> the DPDK Driver doesn't have PMD enabled, no deal. Am I right?

If there is no PMD for it in DPDK, then DPDK (and by that OpenVswitch-DPDK)
won't work with it.
And while DPDK has a lot of PMDs when you just look at the code, most are
Really working and supported are just a few.

>  This information MUST be clear on Xenial release notes! Otherwise, this
> will lead to confusion, because until now, we're saying that if a NIC is
> bonded to a DPDK-Compatible driver, it WILL work with OVS+DPDK, which is
> NOT the case.

I guess you are right that clarifying that to more detail will be
I didn't realize that was unclear.

You say "until now, we're saying" - it would be great if you can refer me
to that?
Otherwise I'll start new and think what we could add.

>  Oh, thanks for replying on my bug report too! You're very kind...   ^_^

Thank you - I just try to help as much as possible and I'm equally happy
about you and others starting to work with DPDK on Ubuntu 16.04
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