[PATCH v1] net/mlx5: add test for hot upgrade

[Thomas Monjalon]

16/05/2023 07:41, Rongwei Liu:
> This patch adds testpmd app a runtime function to test the hot
> upgrade API.
> 
>     testpmd> mlx5 set flow_engine <0|1> (flag)
> 0 stands for active mode while 1 for standby mode.
> 
> Signed-off-by: Rongwei Liu <rongweil at nvidia.com>
> Acked-by: Viacheslav Ovsiienko <viacheslavo at nvidia.com>
> ---
> --- a/doc/guides/nics/mlx5.rst
> +++ b/doc/guides/nics/mlx5.rst
> @@ -2057,3 +2057,13 @@ where:
>  * ``sw_queue_id``: queue index in range [64536, 65535].
>    This range is the highest 1000 numbers.
>  * ``hw_queue_id``: queue index given by HW in queue creation.
> +
> +Set Flow Engine Mode
> +^^^^^^^^^^^^^^^^^^^^

The title is made as a sub-section of "port map external Rx queue",
which looks wrong.

> +
> +Set the flow engine to active(0) or standby(1) mode with specific flags::
> +   testpmd> mlx5 set flow_engine <0|1> (flags)

It should be said it is for testing live migration.

Also the flags are not described. Should we pass an integer?

> +
> +This command works for software steering only.
> +Default FDB jump should be disabled if switchdev is enabled.
> +The mode will propagate to all the probed ports.

For the reasons above, I prefer not pulling this patch in the main branch.