Re: [PATCH net] drivers/net/wan/lapbether: Added needed_tailroom

[Xie He]

On Sun, Aug 9, 2020 at 1:48 AM Willem de Bruijn
<willemdebruijn.kernel@xxxxxxxxx> wrote:
>
> Does this solve an actual observed bug?
>
> In many ways lapbeth is similar to tunnel devices. This is not common.

Thank you for your comment!

This doesn't solve a bug observed by me. But I think this should be
necessary considering the logic of the code.

Using "grep", I found that there were indeed Ethernet drivers that set
needed_tailroom. I found it was set in these files:
    drivers/net/ethernet/sun/sunvnet.c
    drivers/net/ethernet/sun/ldmvsw.c
Setting needed_tailroom may be necessary for this driver to run those
Ethernet devices.