[ovs-dev] [PATCHv2] tests: Skip tests using tcp nc under check-afxdp.

William Tu u9012063 at gmail.com
Mon Nov 4 16:17:33 UTC 2019


On Mon, Nov 4, 2019 at 2:56 AM Eelco Chaudron <echaudro at redhat.com> wrote:
>
> William,
>
> I was wondering if you could add some more details to the documentation
> why it’s not working/supported.
> Currently, all that is in the documentation is this:
>
> “Due to limitations of current upstream kernel, TCP and various
> offloading (vlan, cvlan) is not working over virtual interfaces (i.e.
> veth pair).”
>
> Cheers,
>

Sure. Thanks.
I should add it in the commit message and also in afxdp.rst.

TCP doesn't work with XDP over veth interfaces. This is a known kernel
issue that could be work arounded by the following patch to a kernel:
    https://github.com/cilium/cilium/issues/3077#issuecomment-430801467 .
Until proper solution implemented in kernel we probably should skip all the
tests that involves TCP.

William


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