netdev - Re: port mirror on dsa switches?

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Message-ID: <CAJGZr0+qyKppYr5mfAM5TOtD9RMKnrZTeCOhaBK1wV_sHdPL3A@mail.gmail.com>
Date:   Thu, 16 Mar 2017 22:43:40 +0300
From:   Maxim Uvarov <muvarov@...il.com>
To:     Florian Fainelli <f.fainelli@...il.com>
Cc:     netdev@...r.kernel.org
Subject: Re: port mirror on dsa switches?

2017-03-16 19:47 GMT+03:00 Florian Fainelli <f.fainelli@...il.com>:
> Hi,
>
> On 03/16/2017 03:32 AM, Maxim Uvarov wrote:
>> Hello,
>>
>> Some dsa switches can support port mirror in hardware. Does somebody
>> have any idea how to
>> work with it from linux side in generic way?
>
> It has been implemented with commit
> f50f212749e8a28803af3628acbeb85ee0458ed5 ("net: dsa: Add plumbing for
> port mirroring") and you can see an implementation example with the b53
> driver.
>

thanks, see that in newer kernel. It will be good to update doc with
commands to use.
I see from cover latter you mirrored eth1 to eth2. I  assume it's dsa
ports names for b53?
Do I also need updated tc?

> For a DSA driver you should be implementing port_mirror_add and
> port_mirror_del operations which provide you with the necessary
> information. Hopefully the switch you are working with (mv88e6xxx?) is
> also supportable using that API, if not, please submit changes to extend it.
>
> Thanks!
> --
> Florian

Yes, I think it will match mv88e6xxx. Will try to play with it. Thanks a lot!

-- 
Best regards,
Maxim Uvarov