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Commit 07fd7364 authored by Sven Eckelmann's avatar Sven Eckelmann Committed by Greg Kroah-Hartman
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Staging: batman-adv: Update mtu of bat device by changing mtu of slave device 



We must reduce our own mtu when we reduce the mtu of any device we use
to transfer our packets. Otherwise we may accept to large packets which
gets dropped by the actual device.

Reported-by: default avatarVasiliy Kulikov <segooon@gmail.com>
Signed-off-by: default avatarSven Eckelmann <sven.eckelmann@gmx.de>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 81abee4f

drivers/staging/batman-adv/hard-interface.c

+4 −0
Original line number Diff line number Diff line
@@ -469,6 +469,10 @@ static int hard_if_event(struct notifier_block *this, 
	case NETDEV_UNREGISTER:

		hardif_remove_interface(batman_if);

		break;

	case NETDEV_CHANGEMTU:

		if (batman_if->soft_iface)

			update_min_mtu(batman_if->soft_iface);

		break;

	case NETDEV_CHANGEADDR:

		if (batman_if->if_status == IF_NOT_IN_USE)

			goto out;