netdev - Re: [PATCH net-next 1/1] net sched actions: mirred add support for setting Dst MAC address

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Date:	Sat, 2 Jul 2016 10:16:49 -0400
From:	Jamal Hadi Salim <jhs@...atatu.com>
To:	Nikolay Aleksandrov <nikolay@...ulusnetworks.com>,
	davem@...emloft.net
Cc:	netdev@...r.kernel.org, xiyou.wangcong@...il.com,
	daniel@...earbox.net
Subject: Re: [PATCH net-next 1/1] net sched actions: mirred add support for
 setting Dst MAC address

On 16-07-02 10:07 AM, Nikolay Aleksandrov wrote:
> On 02/07/16 16:02, Jamal Hadi Salim wrote:
>> On 16-07-02 09:49 AM, Nikolay Aleksandrov wrote:

>>> Also a minor suggestion - maybe err out on a
>>> zero mac address, otherwise the user might think the operation was successful.
>>>
>>
>> Is a zero mac address wrong? What if that was policy intent?
>>
>
> If you mean that you give the user ability to get rid of the mac, then okay. I said it
> because it will seem like a successful operation and then the mac will not be dumped
> or overwritten which will look like it wasn't set at all.
>

I mean a MAC address of all zeros.
The destination MAC itself is optional attribute; if user doesnt pass it
we (dont care and) never use it. Dumping will not see it and therefore
not display it.

cheers,
jamal