From: Patrick McHardy <kaber@trash.net>
Date: Sun, 11 Nov 2007 05:51:40 +0000 (-0800)
Subject: [VLAN]: Don't synchronize addresses while the vlan device is down
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=d932e04a5e7b146c5f9bf517714b986a432a7594;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

[VLAN]: Don't synchronize addresses while the vlan device is down

While the VLAN device is down, the unicast addresses are not configured
on the underlying device, so we shouldn't attempt to sync them.

Noticed by Dmitry Butskoy <buc@odusz.so-cdu.ru>

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c
index 1037748c14db..0fadbc6fbc3f 100644
--- a/net/8021q/vlan.c
+++ b/net/8021q/vlan.c
@@ -636,6 +636,10 @@ static int vlan_device_event(struct notifier_block *unused, unsigned long event,
 			if (!vlandev)
 				continue;
 
+			flgs = vlandev->flags;
+			if (!(flgs & IFF_UP))
+				continue;
+
 			vlan_sync_address(dev, vlandev);
 		}
 		break;