[PATCH 22.03] mvebu: cortexa9: disable devices using broken mv88e6176 switch

[Enrico Mioso]

My 2 cents here.

My (very possibly wrong) impression, this seems the same way of thinking followed in commit db19efee951231b38573cffaadb15fad8f9c058d .
I can understand this is a strong way to convince people to care about specific issues. Still, this seems a bit rude to me.
On the other side, I can understand this problem can have pretty much security consequences, so both point of views make sense to me.

On Thu, Dec 01, 2022 at 12:52:29PM +0100, Petr Štetiar wrote:
> Uwe Kleine-König <uwe+openwrt at kleine-koenig.org> [2022-12-01 12:17:31]:
> 
> Hi Uwe,
> 
> > On 12/1/22 10:52, Petr Štetiar wrote:
> > > Several users have reported, that devices using mv88e6176 switch are
> > > seriously broken, basically turning that switch into a hub. Until fixed
> > > those devices should be disabled.
> > 
> > I wonder if disabling is a sane thing to do here. 
> 
> IMO it's a serious issue, so we've just following sane options:
> 
>  * fix it
>  * remove support for those devices and make everyone aware
> 
> > People running 22.03.2 won't be able to update
> 
> Indeed, bummer, we're sorry about that, but the idea here is to make everyone
> aware and prevent more users from upgrading those devices to latest 22.03
> release.
> 
> > Isn't that worse than a slow network configuration?
> 
> Quoting from https://github.com/openwrt/openwrt/issues/10997
> 
>  "After upgrade from 21.02 eth switch start to forward all incoming traffic to
>   all ports.  I can see ALL traffic using tcpdump on computer connected to one
>   port and all eth traffic leds are blinking always simultaneously.  Same
>   configuration on 21.02 works ok - VLANs and individual traffic are isolated."
> 
> Cheers,
> 
> Petr
> 
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