Subject: Re: [PATCH mlx5-next 2/5] net/mlx5: Expose mlx5_sriov_blocking_notifier_register / unregister APIs

From: Jason Gunthorpe <[email-masked]>
Date: Wed, 4 May 2022 10:55:57 -0300

On Wed, Apr 27, 2022 at 12:31:17PM +0300, Yishai Hadas wrote:
> Expose mlx5_sriov_blocking_notifier_register / unregister APIs to let a
> VF register to be notified for its enablement / disablement by the PF.
> 
> Upon VF probe it will call mlx5_sriov_blocking_notifier_register() with
> its notifier block and upon VF remove it will call
> mlx5_sriov_blocking_notifier_unregister() to drop its registration.
> 
> This can give a VF the ability to clean some resources upon disable
> before that the command interface goes down and on the other hand sets
> some stuff before that it's enabled.
> 
> This may be used by a VF which is migration capable in few cases.(e.g.
> PF load/unload upon an health recovery).
> 
> Signed-off-by: Yishai Hadas <[email-masked]>
> Signed-off-by: Saeed Mahameed <[email-masked]>
> ---
>  .../net/ethernet/mellanox/mlx5/core/sriov.c   | 65 ++++++++++++++++++-
>  include/linux/mlx5/driver.h                   | 12 ++++
>  2 files changed, 76 insertions(+), 1 deletion(-)

This patch needs to be first and be on the mlx5 shared branch
 
Jason