RE: [PATCH net-next v1] r8152: allow userland to disable multicast

[Hayes Wang]

Sven van Ashbrook <svenva@xxxxxxxxxxxx>
> Sent: Tuesday, August 30, 2022 1:00 PM
[...]
> The rtl8152 driver does not disable multicasting when userspace asks
> it to. For example:
>  $ ifconfig eth0 -multicast -allmulti
>  $ tcpdump -p -i eth0  # will still capture multicast frames
> 
> Fix by clearing the device multicast filter table when multicast and
> allmulti are both unset.
> 
> Tested as follows:
> - Set multicast on eth0 network interface
> - verify that multicast packets are coming in:
>   $ tcpdump -p -i eth0
> - Clear multicast and allmulti on eth0 network interface
> - verify that no more multicast packets are coming in:
>   $ tcpdump -p -i eth0
> 
> Signed-off-by: Sven van Ashbrook <svenva@xxxxxxxxxxxx>

Acked-by: Hayes Wang <hayeswang@xxxxxxxxxxx>

Best Regards,
Hayes