Re: [PATCH net-next v3 5/6] net: dsa: qca: ar9331: add bridge support

[Vladimir Oltean]

Hi Oleksij,

On Mon, Aug 02, 2021 at 03:10:36PM +0200, Oleksij Rempel wrote:
> This switch is providing forwarding matrix, with it we can configure
> individual bridges. Potentially we can configure more than one not VLAN
> based bridge on this HW.
> 
> Signed-off-by: Oleksij Rempel <o.rempel@xxxxxxxxxxxxxx>
> Reviewed-by: Florian Fainelli <f.fainelli@xxxxxxxxx>
> ---

I don't see anywhere in this patch or in this series that the
tag_ar9331.c file is being patched to set skb->offload_fwd_mark to true
for packets sent (flooded) to the CPU that have already been forwarded
by the hardware switch. If the software bridge sees a broadcast packet
coming from your driver and it has offload_fwd_mark = false, it will
forward it a second time and the other nodes in your network will see
duplicates.