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Date:   Wed, 30 Sep 2020 16:29:13 -0700
From:   Florian Fainelli <>
To:     Vladimir Oltean <>
Cc:     "" <>,
        Andrew Lunn <>,
        Vivien Didelot <>,
        "David S. Miller" <>,
        Jakub Kicinski <>,
        open list <>
Subject: Re: [PATCH net-next] net: dsa: Support bridge 802.1Q while untagging

On 9/30/2020 1:43 PM, Vladimir Oltean wrote:
> On Wed, Sep 30, 2020 at 01:31:03PM -0700, Florian Fainelli wrote:
>> While we are it, call __vlan_find_dev_deep_rcu() which makes use the
>> VLAN group array which is faster.
> Not just "while at it", but I do wonder whether it isn't, in fact,
> called "deep" for a reason:
> 		/*
> 		 * Lower devices of master uppers (bonding, team) do not have
> 		 * grp assigned to themselves. Grp is assigned to upper device
> 		 * instead.
> 		 */
> I haven't tested this, but I wonder if you could actually call
> __vlan_find_dev_deep_rcu() on the switch port interface and it would
> cover both this and the bridge having an 8021q upper automatically?

Let me give this a try.

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