netdev - Re: [patch net-next 0/7] expose flash update status to user

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Date:   Mon, 27 May 2019 11:14:32 -0700
From:   Florian Fainelli <f.fainelli@...il.com>
To:     Jiri Pirko <jiri@...nulli.us>, netdev@...r.kernel.org
Cc:     davem@...emloft.net, mlxsw@...lanox.com,
        jakub.kicinski@...ronome.com, sthemmin@...rosoft.com,
        dsahern@...il.com, saeedm@...lanox.com, leon@...nel.org
Subject: Re: [patch net-next 0/7] expose flash update status to user



On 5/23/2019 2:45 AM, Jiri Pirko wrote:
> From: Jiri Pirko <jiri@...lanox.com>
> 
> When user is flashing device using devlink, he currenly does not see any
> information about what is going on, percentages, etc.
> Drivers, for example mlxsw and mlx5, have notion about the progress
> and what is happening. This patchset exposes this progress
> information to userspace.
> 
> See this console recording which shows flashing FW on a Mellanox
> Spectrum device:
> https://asciinema.org/a/247926

It would be great to explain why you went that route instead of
implementing a MTD device (like what sfc) which would have presumably
allowed you to more or less the same thing using a standard device
driver model that is establish with flash devices.

> 
> Jiri Pirko (7):
>   mlxsw: Move firmware flash implementation to devlink
>   mlx5: Move firmware flash implementation to devlink
>   mlxfw: Propagate error messages through extack
>   devlink: allow driver to update progress of flash update
>   mlxfw: Introduce status_notify op and call it to notify about the
>     status
>   mlxsw: Implement flash update status notifications
>   netdevsim: implement fake flash updating with notifications
> 
>  drivers/net/ethernet/mellanox/mlx5/core/en.h  |   2 -
>  .../ethernet/mellanox/mlx5/core/en_ethtool.c  |  35 ------
>  drivers/net/ethernet/mellanox/mlx5/core/fw.c  |   6 +-
>  .../mellanox/mlx5/core/ipoib/ethtool.c        |   9 --
>  .../net/ethernet/mellanox/mlx5/core/main.c    |  20 ++++
>  .../ethernet/mellanox/mlx5/core/mlx5_core.h   |   3 +-
>  drivers/net/ethernet/mellanox/mlxfw/mlxfw.h   |  11 +-
>  .../net/ethernet/mellanox/mlxfw/mlxfw_fsm.c   |  57 ++++++++--
>  drivers/net/ethernet/mellanox/mlxsw/core.c    |  15 +++
>  drivers/net/ethernet/mellanox/mlxsw/core.h    |   3 +
>  .../net/ethernet/mellanox/mlxsw/spectrum.c    |  75 +++++++------
>  drivers/net/netdevsim/dev.c                   |  35 ++++++
>  include/net/devlink.h                         |   8 ++
>  include/uapi/linux/devlink.h                  |   5 +
>  net/core/devlink.c                            | 102 ++++++++++++++++++
>  15 files changed, 295 insertions(+), 91 deletions(-)
> 

-- 
Florian