[PATCH v2 0/6] net: Port NFS to lwIP

[Michal Simek]

On 12/12/25 12:32, 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>
> ---
> Changes in v2:
> - Corrected capitalisation of lwIP
> - Stopped moving some variables into common code that are not used by
>    lwIP
> - NULL check a pbuf after allocation and before use
> - Add patch to enable CMD_NFS on qemu_arm64_lwip_defconfig
> - Link to v1: https://lore.kernel.org/r/20251208-lwip_nfs-v1-0-1f5d31e15d00@linaro.org
> 
> ---
> Andrew Goodbody (6):
>        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
>        configs: qemu_arm64_lwip_defconfig: enable CMD_NFS
> 
>   cmd/Kconfig                       |  28 +-
>   cmd/lwip/Makefile                 |   1 +
>   cmd/lwip/nfs.c                    |  11 +
>   configs/qemu_arm64_lwip_defconfig |   1 +
>   include/net-common.h              |  29 +-
>   include/net-legacy.h              |  22 -
>   include/net-lwip.h                |   1 +
>   net/Makefile                      |   1 +
>   net/lwip/Makefile                 |   1 +
>   net/lwip/net-lwip.c               |   5 -
>   net/lwip/nfs.c                    | 286 +++++++++++++
>   net/net-common.c                  |  12 +
>   net/net.c                         |  12 -
>   net/nfs-common.c                  | 863 ++++++++++++++++++++++++++++++++++++++
>   net/nfs-common.h                  | 123 ++++++
>   net/nfs.c                         | 849 +------------------------------------
>   net/nfs.h                         |  59 ---
>   17 files changed, 1355 insertions(+), 949 deletions(-)
> ---
> base-commit: 59f9fcc1f514762674ac07c13c2a85f7aace7250
> change-id: 20251029-lwip_nfs-5385efca71bc
> 
> Best regards,

Tested-by: Michal Simek <michal.simek at amd.com>

On vek385. I am missing some TODO to say that this is NFS v3 (or lower but I did 
test only v3) via UDP.
Not sure how much work is to enable TCP when we are in LWIP already
but some information about NFSv4 would be good too.

Thanks,
Michal