NFSv4 boot support?

[Dan Shelton]

On Sat, 17 Feb 2024 at 09:51, Ahmad Fatoum <a.fatoum at pengutronix.de> wrote:
>
> Hello Antony,
>
> On 05.02.24 10:59, Antony Pavlov wrote:
> > On Wed, 31 Jan 2024 22:37:50 +0100
> > Ahmad Fatoum <a.fatoum at pengutronix.de> wrote:
> >
> > Hi All!
> >
> >> Hello Dan,
> >>
> >> On 31.01.24 22:03, Dan Shelton wrote:
> >>> Hello!
> >>>
> >>> Does barebox support booting from a NFSv4 filesystem, e.g. boot from
> >>> NFSv4 filesystem into a Linux NFSv4 netroot (diskless machine)?
> >>
> >> The barebox network stack only does UDP/IP. There have been attempts to
> >> bring a TCP stack into barebox, but none have so far succeeded to
> >> make it mainline. This is a hard requirement before we can consider
> >> supporting NFSv4. I hope that lwIP could fill this gap in the future,
> >> but no one is actively continuing this work as far as I am aware[1].
> >
> > I have started integration on picotcp into barebox in 2015, see
> >   https://lore.barebox.org/barebox/1436991230-14251-10-git-send-email-antonynpavlov@gmail.com/T/
> >
> > At the moment I have WIP barebox-v2023.11 with integrated picotcp 2.1:
> >
> >   https://github.com/frantony/barebox/tree/20231127.picotcp
>
> Cool. Looking at Oleksij's repo, it was based on your work. How well does
> picotcp work for you? What open issues remain with the patch stack? Is the
> barebox integration actively used in projects?
>
> Is https://github.com/tass-belgium/picotcp the official repository? This hasn't
> seen development activity in 5 years. lwIP on the other hand still sees active
> development.
>
> Regarding the license, inclusion of BSD-licensed code is ok. You can check out
> the LICENSES/ subdirectory for the licenses covering barebox.

If TCP support lands in barebox, how fast can NFSv4 support be implemented?

Dan
-- 
Dan Shelton - Cluster Specialist Win/Lin/Bsd