netdev - Re: [net-next 01/15] net/mlx5: Lag, Let user configure multiport eswitch

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Date:   Mon, 13 Feb 2023 12:32:01 +0100
From:   Jiri Pirko <jiri@...nulli.us>
To:     Jakub Kicinski <kuba@...nel.org>
Cc:     Saeed Mahameed <saeed@...nel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Paolo Abeni <pabeni@...hat.com>,
        Eric Dumazet <edumazet@...gle.com>,
        Saeed Mahameed <saeedm@...dia.com>, netdev@...r.kernel.org,
        Tariq Toukan <tariqt@...dia.com>, Roi Dayan <roid@...dia.com>,
        Maor Dickman <maord@...dia.com>
Subject: Re: [net-next 01/15] net/mlx5: Lag, Let user configure multiport
 eswitch

Sat, Feb 11, 2023 at 05:03:29AM CET, kuba@...nel.org wrote:
>On Fri, 10 Feb 2023 14:18:07 -0800 Saeed Mahameed wrote:
>> From: Roi Dayan <roid@...dia.com>
>> 
>> Instead of activating multiport eswitch dynamically through
>> adding a TC rule and meeting certain conditions, allow the user
>> to activate it through devlink.
>> This will remove the forced requirement of using TC.
>> e.g. Bridge offload.
>> 
>> Example:
>>     $ devlink dev param set pci/0000:00:0b.0 name esw_multiport value 1 \
>>                   cmode runtime
>
>The PR message has way better description of what's going on here.
>
>> +   * - ``esw_multiport``
>> +     - Boolean
>> +     - runtime
>> +     - Set the E-Switch lag mode to multiport.
>
>This is just spelling out the name, not real documentation :(
>
>IIUC the new mode is how devices _should_ work in switchdev mode,

Yep, I feel exactly the same.


>so why not make this the default already? What's the cut-off point?