From: Vladimir Oltean <olte...@gmail.com>
Date: Wed, 13 May 2020 02:49:21 +0300

> From: Vladimir Oltean <vladimir.olt...@nxp.com>
> 
> On sja1105 operating in best_effort_vlan_filtering mode (when the TPID
> of the DSA tags is 0x8100), it can be seen that __netif_receive_skb_core
> calls __vlan_hwaccel_clear_tag right before passing the skb to the DSA
> packet_type handler.
> 
> This means that the tagger does not see the VLAN tag in the skb, nor in
> the skb meta data.
> 
> The patch that started zeroing the skb VLAN tag is:
> 
>   commit d4b812dea4a236f729526facf97df1a9d18e191c
>   Author: Eric Dumazet <edumazet@xxxxxxxxxx>
>   Date:   Thu Jul 18 07:19:26 2013 -0700
> 
>       vlan: mask vlan prio bits

Eric, please review.

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