[PATCH 0/5] net: Port NFS to LWIP

[Heinrich Schuchardt]

On 12/8/25 13:52, Andrew Goodbody wrote:
> This series ports the existing NFS code so that it can be used with both
> the legacy network code and also with LWIP.
> Firstly some legacy network code, mostly variables, is moved into common
> files so that it is accessible to LWIP.
> Secondly the NFS code is refactored so that the parts that are not
> specific to the network code can be shared with both network
> implementations.
> Finally the LWIP specific parts needed to interface the NFS shared code
> to that network stack are added and enabled.
> 
> Signed-off-by: Andrew Goodbody <andrew.goodbody at linaro.org>
> ---
> Andrew Goodbody (5):
>        net: move net_state to net-common
>        net: Move some variables to net-common files
>        net: nfs: Add licence header
>        net: nfs: Move most NFS code to common files
>        net: lwip: nfs: Port the NFS code to work with LWIP
> 
>   cmd/Kconfig          |  28 +-
>   cmd/lwip/Makefile    |   1 +
>   cmd/lwip/nfs.c       |  11 +
>   include/net-common.h |  38 ++-
>   include/net-legacy.h |  26 --
>   include/net-lwip.h   |   1 +
>   net/Makefile         |   1 +
>   net/lwip/Makefile    |   1 +
>   net/lwip/net-lwip.c  |   5 -
>   net/lwip/nfs.c       | 282 +++++++++++++++++
>   net/net-common.c     |  21 ++
>   net/net.c            |  23 --
>   net/nfs-common.c     | 863 +++++++++++++++++++++++++++++++++++++++++++++++++++
>   net/nfs-common.h     | 123 ++++++++
>   net/nfs.c            | 849 +-------------------------------------------------
>   net/nfs.h            |  59 ----
>   16 files changed, 1368 insertions(+), 964 deletions(-)
> ---
> base-commit: 59f9fcc1f514762674ac07c13c2a85f7aace7250
> change-id: 20251029-lwip_nfs-5385efca71bc
> 
> Best regards,

Thank you for looking into the LWIP port.

We lack an NFS server in our Gitlab CI to run the NFS test.

For HTTP we are running
python3 -m http.server 80 --directory "${UBOOT_TRAVIS_BUILD_DIR}"
in .gitlab-ci.yml.

We should do something similar for NFS.

There is a userspace NFS server available
at https://github.com/unfs3/unfs3.

This worked on my workstation:

cat > exports << EOF
/home/ubuntu
EOF
./unfsd -e `pwd`/exports  -u  -n 4096 -m 4096
sudo mount -t nfs \
-o port=4096,mountport=4096,mountvers=3,nolock \
localhost:/home/ubuntu /mnt

Now in /mnt I could see the /home/ubuntu file-system.

With LWIP we should think about enabling tcp for NFS.

Best regards

Heinrich