batman-adv: Trigger events for auto adjusted MTU

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commit c6a953cce8 upstream.

If an interface changes the MTU, it is expected that an NETDEV_PRECHANGEMTU
and NETDEV_CHANGEMTU notification events is triggered. This worked fine for
.ndo_change_mtu based changes because core networking code took care of it.
But for auto-adjustments after hard-interfaces changes, these events were
simply missing.

Due to this problem, non-batman-adv components weren't aware of MTU changes
and thus couldn't perform their own tasks correctly.

Fixes: c6c8fea297 ("net: Add batman-adv meshing protocol")
Cc: stable@vger.kernel.org
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Sven Eckelmann 2023-07-19 09:29:29 +02:00 • committed by Greg Kroah-Hartman

parent 21cd99431a

commit 2c78334421

1 changed files with 1 additions and 1 deletions

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net/batman-adv/hard-interface.c

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