[ovs-dev] [PATCH v4] datapath-windows: Enable checksum offloads in STT

[Ben Pfaff]

On Wed, Sep 23, 2015 at 08:49:49AM -0700, Jesse Gross wrote:
> On Wed, Sep 23, 2015 at 8:38 AM, Nithin Raju <nithin at vmware.com> wrote:
> >> On Sep 23, 2015, at 8:33 AM, Jesse Gross <jesse at nicira.com> wrote:
> >>
> >> On Tue, Sep 22, 2015 at 11:04 PM, Nithin Raju <nithin at vmware.com> wrote:
> >>> hi Jesse,
> >>> We are getting the Hyper-V solution to a state with the following goals:
> >>> - Work “out of the box” ie. no need to make special settings such as disabling checksum offload, TSO, etc.
> >>> - Reasonably stable
> >>>
> >>> Most of the patches we have checked in so far into 2.4 are geared towards these two goals. Once all of the required changes go in, and we are reasonably confident about the stability, we can hopefully make an announcement about Hyper-V support.
> >>
> >> This is my concern - there should not be any announcements based on
> >> stable branches because there should be no development on stable
> >> branches. The only thing that should go in is targeted bug fixes to
> >> address issues that came up after the release.
> >>
> >> All of the goals that you listed are good things and make sense - on
> >> the master branch. However, I don't see a need to bring these back to
> >> 2.4. My guess is that there is no more churn in the common code on
> >> master than with the Windows patches here.
> >>
> >> So please just target 2.5 as the release to make an announcement about
> >> Hyper-V support. I promise that this release cycle won't be as long as
> >> 2.4.
> >
> > Jesse,
> > We were hoping for a dot release off of 2.4. Like a 2.4.1 or 2.4.2 to announce support. Would that not be the right release vehicle?
> 
> No, there should be no new features in point releases. 2.5 is the next
> release where it would makes sense to do this. My guess is that will
> be some time around the end of the year.

The patches I've seen from the Hyper-V developers so far are just in
Hyper-V specific code, that can't really affect the stability of the
rest of the platform.  I have questions about the value of doing this on
2.4, given that 2.5 will branch in a reasonable amount of time, but
since they're eager to do it I'm not sure that it's worth discouraging
them ;-)