netdev - Re: [PATCH net-next 1/6] i40e: Add flag for disabling VF source pruning

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Date:   Thu, 9 Feb 2023 09:19:45 -0800
From:   Tony Nguyen <anthony.l.nguyen@...el.com>
To:     Jakub Kicinski <kuba@...nel.org>
CC:     <davem@...emloft.net>, <pabeni@...hat.com>, <edumazet@...gle.com>,
        Sebastian Czapla <sebastianx.czapla@...el.com>,
        <netdev@...r.kernel.org>,
        Grzegorz Szczurek <grzegorzx.szczurek@...el.com>,
        Marek Szlosek <marek.szlosek@...el.com>
Subject: Re: [PATCH net-next 1/6] i40e: Add flag for disabling VF source
 pruning

On 2/7/2023 9:56 PM, Jakub Kicinski wrote:
> On Mon,  6 Feb 2023 15:56:30 -0800 Tony Nguyen wrote:
>> Allow user to change source pruning for VF VSIs. This allows VFs to
>> receive packets with MAC_SRC and MAC_DST equal to VFs mac.
>>
>> Added priv flag vf-source-pruning to allow user to change
>> source pruning setting. Reset all VSIs to commit the setting.
>> If vf-source-pruning is off and VF is trusted on with spoofchk off
>> then disable source pruning on specific VF takes effect.
>>
>> Without this patch it is not possible to change source pruning
>> setting on VF VSIs.
> 
> Intel keeps trickling in private flags to adjust the behavior of legacy
> SR-IOV NDOs. No documentation, no well understood semantics.
> This does not seem defensible upstream when we already started rejecting
> any use of legacy SR-IOV NDOs in new drivers.

Will drop this patch.

Thanks,
Tony