On Wed, Jun 4, 2025, 2:57 PM Jan Bramkamp <cr...@rlwinm.de> wrote:

> On 04.06.25 19:51, Bjoern A. Zeeb wrote:
> > Hello,
> >
> > Cc: wireless, current, stable, desktop
> >
> > FreeBSD WiFi development has regained traction.  We are facing a
> > decision with FreeBSD 15 coming before the end of this year [1].
> >
> > In order to continue WiFi development, upcoming changes will inevitably
> > break the net80211-driver and net80211-userland interfaces.
> > By FreeBSD's standards those would not be mergeable to stable branches,
> > such as stable/15 then.
> >
> > This would imply development happening in FreeBSD 16-CURRENT (main at
> > that point) would stay there.  The first release to ship anything major
> > beyond now would be FreeBSD 16.0 in December 2027 [1].
> >
> > After some discussion we think this is not a feasible solution and we
> > will declare the KPI and KBI for wireless as unstable in FreeBSD 15.
> >
> > This allows us to merge changes from main into stable/15 for inclusion
> > in future point releases (e.g., 15.1, 15.2, etc.) as the code matures.
> > However, this also means that during the lifetime of FreeBSD 15, we may
> > introduce breaking changes affecting out-of-tree and in-tree drivers,
> > userland-kernel interfaces, and chipsets.  We will address these
> > disruptions as they arise.
> >
> > Before finalizing this decision, we invite feedback from the community.
> > If you have concerns or objections, please speak up now.
> >
> If the breaking changes are already known it would probably be best get
> stubs into the 15-stable ABI,
>
> but otherwise go ahead declare the ABI unstable.
>
> Please keep in mind that WiFi could be a users only available network
> connectivity and treat it the the care it deserves in the release notes.
>
> Is there a release engineering checklist this could be added to until
> the ABI stabilizes again?
>

If you update userland and kernel at the same time, life will be good. It's
only when you have skew that there's a problem.  So install both for src
build, or update all the pkgbase packages at once.

Warner

>

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