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> ...
