Re: [PATCH net-next v3 6/7] selftests: net: Use the provided dpctl rather than the vswitchd for tests.
From: Simon Horman
Date: Wed Jun 26 2024 - 12:55:09 EST
On Tue, Jun 25, 2024 at 01:22:44PM -0400, Aaron Conole wrote:
> The current pmtu test infrastucture requires an installed copy of the
> ovs-vswitchd userspace. This means that any automated or constrained
> environments may not have the requisite tools to run the tests. However,
> the pmtu tests don't require any special classifier processing. Indeed
> they are only using the vswitchd in the most basic mode - as a NORMAL
> switch.
>
> However, the ovs-dpctl kernel utility can now program all the needed basic
> flows to allow traffic to traverse the tunnels and provide support for at
> least testing some basic pmtu scenarios. More complicated flow pipelines
> can be added to the internal ovs test infrastructure, but that is work for
> the future. For now, enable the most common cases - wide mega flows with
> no other prerequisites.
>
> Enhance the pmtu testing to try testing using the internal utility, first.
> As a fallback, if the internal utility isn't running, then try with the
> ovs-vswitchd userspace tools.
>
> Additionally, make sure that when the pyroute2 package is not available
> the ovs-dpctl utility will error out to properly signal an error has
> occurred and skip using the internal utility.
Hi Aaron,
I don't feel strongly about this, but it does feel like the
change to ovs-dpctl.py could live in a separate patch.
> Reviewed-by: Stefano Brivio <sbrivio@xxxxxxxxxx>
> Signed-off-by: Aaron Conole <aconole@xxxxxxxxxx>
The above not withstanding,
Reviewed-by: Simon Horman <horms@xxxxxxxxxx>
I have tested pmtu.sh with this change on Fedora 40 both
with python3-pyroute2 installed, which uses ovs-dpctl,
and without, which uses ovs-vswitchd userspace tools.
Tested-by: Simon Horman <horms@xxxxxxxxxx>
...