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Date:   Tue, 16 Apr 2019 17:20:47 -0700
From:   Florian Fainelli <>
To:     Vladimir Oltean <>,,,
Subject: Re: [PATCH v3 net-next 23/24] Documentation: net: dsa: Add details
 about NXP SJA1105 driver

On 12/04/2019 18:28, Vladimir Oltean wrote:


> +Segregating the switch ports in multiple bridges is supported (e.g. 2 + 2), but
> +all bridges should have the same level of VLAN awareness (either both have
> +``vlan_filtering`` 0, or both 1). Also an inevitable limitation of the fact
> +that VLAN awareness is global at the switch level is that once a bridge with
> +``vlan_filtering`` enslaves at least one switch port, the other un-bridged
> +ports are no longer available for standalone traffic termination.

That is quite a limitation that I don't think I had fully grasped until 
reading your different patches. Since enslaving ports into a bridge 
comes after the network device was already made available for use, maybe 
you should force the carrier down or something along those lines as soon 
as a port is enslaved into a bridge with vlan_filtering=1 to make this 
more predictable for the user?

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