Re: [PATCH rdma-next v1] RDMA/ipoib: Allow user space differentiate between valid dev_port

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On Mon, May 06, 2019 at 02:23:04PM +0300, Leon Romanovsky wrote:
> From: Leon Romanovsky <leonro@xxxxxxxxxxxx>
> 
> Systemd triggers the following warning during IPoIB device load:
> 
>  mlx5_core 0000:00:0c.0 ib0: "systemd-udevd" wants to know my dev_id.
>         Should it look at dev_port instead?
>         See Documentation/ABI/testing/sysfs-class-net for more info.
> 
> This is caused due to user space attempt to differentiate old systems
> without dev_port and new systems with dev_port. In case dev_port will
> be zero, the systemd will try to read dev_id instead.
> 
> There is no need to print a warning in such case, because it is valid
> situation and it is needed to ensure systemd compatibility with old
> kernels.
> 
> Link: https://github.com/systemd/systemd/blob/master/src/udev/udev-builtin-net_id.c#L358
> Cc: <stable@xxxxxxxxxxxxxxx> # 4.19
> Fixes: f6350da41dc7 ("IB/ipoib: Log sysfs 'dev_id' accesses from userspace")
> Signed-off-by: Leon Romanovsky <leonro@xxxxxxxxxxxx>
> ---
>  Changelog v0->v1:
>  * Fix typo as pointed by Gal P.
> ---
>  drivers/infiniband/ulp/ipoib/ipoib_main.c | 12 +++++++++++-
>  1 file changed, 11 insertions(+), 1 deletion(-)

Applied to for-next, thanks

Jason



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