Re: [PATCH] batman-adv: Revert "use core MTU range checking in misc drivers"

[David Miller]

From: Sven Eckelmann <sven@xxxxxxxxxxxxx>
Date: Sat, 22 Oct 2016 09:46:24 +0200

> The maximum MTU is defined via the slave devices of an batman-adv
> interface. Thus it is not possible to calculate the max_mtu during the
> creation of the batman-adv device when no slave devices are attached. Doing
> so would for example break non-fragmentation setups which then
> (incorrectly) allow an MTU of 1500 even when underlying device cannot
> transport 1500 bytes + batman-adv headers.
> 
> Checking the dynamically calculated max_mtu via the minimum of the slave
> devices MTU during .ndo_change_mtu is also used by the bridge interface.
> 
> Cc: Jarod Wilson <jarod@xxxxxxxxxx>
> Fixes: b3e3893e1253 ("net: use core MTU range checking in misc drivers")
> Signed-off-by: Sven Eckelmann <sven@xxxxxxxxxxxxx>

Applied, thanks.