From: Matthijs Kooijman <matthijs@stdin.nl>
Date: Mon, 31 Oct 2011 04:53:13 +0000 (+0000)
Subject: vlan: Don't propagate flag changes on down interfaces.
X-Git-Tag: v3.2-rc1~68^2~18
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=deede2fabe24e00bd7e246eb81cd5767dc6fcfc7;p=pandora-kernel.git

vlan: Don't propagate flag changes on down interfaces.

When (de)configuring a vlan interface, the IFF_ALLMULTI ans IFF_PROMISC
flags are cleared or set on the underlying interface. So, if these flags
are changed on a vlan interface that is not up, the flags underlying
interface might be set or cleared twice.

Only propagating flag changes when a device is up makes sure this does
not happen. It also makes sure that an underlying device is not set to
promiscuous or allmulti mode for a vlan device that is down.

Signed-off-by: Matthijs Kooijman <matthijs@stdin.nl>
Signed-off-by: David S. Miller <davem@davemloft.net>
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