On 04/13/2016 07:21 PM, Traynor, Kevin wrote:
-----Original Message-----
From: dev [mailto:dev-boun...@openvswitch.org] On Behalf Of Panu Matilainen
Sent: Wednesday, April 13, 2016 8:50 AM
To: Weglicki, MichalX <michalx.wegli...@intel.com>; dev@openvswitch.org
Subject: Re: [ovs-dev] [PATCH] Update relevant artifacts to add support for
DPDK 16.04.
[snip]
As an aside, I've been thinking maybe this is a case where OVS could
support both DPDK 2.2 and 16.04. I know its unprecedented but maybe that
could change, restricting OVS to just one DPDK version seems
unnecessarily strict when talking about differences this trivial.
Judging by the ML, it's more commonly requested to use the current release
of DPDK with the last release of OVS e.g. OVS 2.5 and DPDK 16.04, than people
wanting OVS master with DPDK X-1.
That's actually just different angle of the same thing: people have
different needs. If DPDK 16.04 support was pulled into OVS 2.5, what
about those who were happy with DPDK 2.2 and dont want to (or cant) move?
Even for a trivial case like above - it would be ok now to add support for DPDK
X-1
but if we then add OVS code to take advantage of new DPDK X features (e.g. vhost
pmd) we'll end up with messy code. Also testing efforts would increase
(double?),
so I don't think we would get it without a cost.
Nothing is free of course. Note that I'm not suggesting OVS gets forever
burdened with ever increasing trail of ancient DPDK versions. Just that
when its trivial to support more than one, it perhaps should. When the
older versions get in the way of progress, just axe the support as
necessary. Perhaps also rephrasing "supported" towards something like
"recommended version is X.Y, but X.Y-1 is also known to work" along the way.
Not that I have strong opinions on this, I'm just expecting distros will
end up/be required to forward-/backport bits and pieces *anyway* so the
trouble of doing so might as well go upstream to benefit everybody.
- Panu -
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