Re: [RFC 7/9] net: dsa: mv88e6352: lock CPU port from learning addresses

[Vivien Didelot <vivien.didelot@savoirfairelinux.com>]

Hi Guenter,

On Jun 2, 2015, at 10:24 AM, Guenter Roeck linux@roeck-us.net wrote:
On 06/01/2015 06:27 PM, Vivien Didelot wrote:
>> This commit disables SA learning and refreshing for the CPU port.
>>
> 
> Hi Vivien,
> 
> This patch also seems to be unrelated to the rest of the series.
> 
> Can you add an explanation why it is needed ?
> 
> With this in place, how does the CPU port SA find its way into the fdb ?
> Do we assume that it will be configured statically ?
> An explanation might be useful.

Without this patch, I noticed the CPU port was stealing the SA of a PC
behind a switch port. this happened when the port was a bridge member,
as the bridge was relaying broadcast coming from one switch port to the
other switch ports in the same vlan.

Thanks,
-v