linux-kernel - Re: [PATCH rdma-rc] RDMA/mlx5: Block FDB rules when not in switchdev mode

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Date:   Tue, 8 Jun 2021 17:10:16 -0300
From:   Jason Gunthorpe <jgg@...dia.com>
To:     Leon Romanovsky <leon@...nel.org>
Cc:     Doug Ledford <dledford@...hat.com>, Mark Bloch <mbloch@...dia.com>,
        linux-kernel@...r.kernel.org, linux-rdma@...r.kernel.org,
        Maor Gottlieb <maorg@...lanox.com>,
        Maor Gottlieb <maorg@...dia.com>
Subject: Re: [PATCH rdma-rc] RDMA/mlx5: Block FDB rules when not in switchdev
 mode

On Mon, Jun 07, 2021 at 11:03:12AM +0300, Leon Romanovsky wrote:
> From: Mark Bloch <mbloch@...dia.com>
> 
> Allow creating FDB steering rules only when in switchdev mode.
> 
> The only software model where a userspace application can manipulate
> FDB entries is when it manages the eswitch. This is only possible in
> switchdev mode where we expose a single RDMA device with representors
> for all the vports that are connected to the eswitch.
> 
> Fixes: 52438be44112 ("RDMA/mlx5: Allow inserting a steering rule to the FDB")
> Reviewed-by: Maor Gottlieb <maorg@...dia.com>
> Signed-off-by: Mark Bloch <mbloch@...dia.com>
> Signed-off-by: Leon Romanovsky <leonro@...dia.com>
> ---
>  drivers/infiniband/hw/mlx5/fs.c | 6 ++++++
>  1 file changed, 6 insertions(+)

Applied to for-rc, thanks

Jason