netdev - [net] net: Fix memory leak

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Message-Id: <1341902839-13181-1-git-send-email-jeffrey.t.kirsher@intel.com>
Date:	Mon,  9 Jul 2012 23:47:19 -0700
From:	Jeff Kirsher <jeffrey.t.kirsher@...el.com>
To:	davem@...emloft.net
Cc:	Amir Hanania <amir.hanania@...el.com>, netdev@...r.kernel.org,
	gospo@...hat.com, sassmann@...hat.com,
	Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Subject: [net] net: Fix memory leak - vlan_info struct

From: Amir Hanania <amir.hanania@...el.com>

In driver reload test there is a memory leak.
The structure vlan_info was not freed when the driver was removed.
It was not released since the nr_vids var is one after last vlan was removed.
The nr_vids is one, since vlan zero is added to the interface when the interface
is being set, but the vlan zero is not deleted at unregister.
Fix - delete vlan zero when we unregister the device.

Signed-off-by: Amir Hanania <amir.hanania@...el.com>
Acked-by: John Fastabend <john.r.fastabend@...el.com>
Tested-by: Aaron Brown <aaron.f.brown@...el.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
---
 net/8021q/vlan.c |    3 +++
 1 file changed, 3 insertions(+)

diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c
index 6089f0c..9096bcb 100644
--- a/net/8021q/vlan.c
+++ b/net/8021q/vlan.c
@@ -403,6 +403,9 @@ static int vlan_device_event(struct notifier_block *unused, unsigned long event,
 		break;
 
 	case NETDEV_DOWN:
+		if (dev->features & NETIF_F_HW_VLAN_FILTER)
+			vlan_vid_del(dev, 0);
+
 		/* Put all VLANs for this dev in the down state too.  */
 		for (i = 0; i < VLAN_N_VID; i++) {
 			vlandev = vlan_group_get_device(grp, i);
-- 
1.7.10.4

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