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Date:   Thu, 10 Sep 2020 12:52:03 -0700
From:   Florian Fainelli <f.fainelli@...il.com>
To:     Vladimir Oltean <olteanv@...il.com>, jakub.kicinski@...ronome.com,
        davem@...emloft.net
Cc:     andrew@...n.ch, vivien.didelot@...il.com, netdev@...r.kernel.org
Subject: Re: [PATCH v2 net-next 4/4] Revert "net: dsa: Add more convenient
 functions for installing port VLANs"



On 9/10/2020 9:48 AM, Vladimir Oltean wrote:
> From: Vladimir Oltean <vladimir.oltean@....com>
> 
> This reverts commit 314f76d7a68bab0516aa52877944e6aacfa0fc3f.
> 
> Citing that commit message, the call graph was:
> 
>      dsa_slave_vlan_rx_add_vid   dsa_port_setup_8021q_tagging
>                  |                        |
>                  |                        |
>                  |          +-------------+
>                  |          |
>                  v          v
>                 dsa_port_vid_add      dsa_slave_port_obj_add
>                        |                         |
>                        +-------+         +-------+
>                                |         |
>                                v         v
>                             dsa_port_vlan_add
> 
> Now that tag_8021q has its own ops structure, it no longer relies on
> dsa_port_vid_add, and therefore on the dsa_switch_ops to install its
> VLANs.
> 
> So dsa_port_vid_add now only has one single caller. So we can simplify
> the call graph to what it was before, aka:
> 
>          dsa_slave_vlan_rx_add_vid     dsa_slave_port_obj_add
>                        |                         |
>                        +-------+         +-------+
>                                |         |
>                                v         v
>                             dsa_port_vlan_add
> 
> Signed-off-by: Vladimir Oltean <vladimir.oltean@....com>

I would be keen on keeping this function just because it encapsulates 
the details of creating the switchdev object and it may be useful to add 
additional functionality later on (like the DSA master RX VLAN 
filtering?), but would not object to its removal if others disagree.
-- 
Florian

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