netdev - [PATCH 2/2] net: make dev_disable_lro use physical device if passed a vlan dev (v2)

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Date:	Tue, 24 May 2011 14:31:09 -0400
From:	Neil Horman <nhorman@...driver.com>
To:	netdev@...r.kernel.org
Cc:	Neil Horman <nhorman@...driver.com>, davem@...emloft.net,
	bhutchings@...arflare.com
Subject: [PATCH 2/2] net: make dev_disable_lro use physical device if passed a vlan dev (v2)

If the device passed into dev_disable_lro is a vlan, then repoint the dev
poniter so that we actually modify the underlying physical device.

Signed-of-by: Neil Horman <nhorman@...driver.com>
CC: davem@...emloft.net
CC: bhutchings@...arflare.com
---
 net/core/dev.c |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)

diff --git a/net/core/dev.c b/net/core/dev.c
index d945379..da16c6a 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -1308,6 +1308,13 @@ void dev_disable_lro(struct net_device *dev)
 {
 	u32 flags;
 
+	/*
+ 	 * If we're trying to disable lro on a vlan device
+ 	 * use the underlying physical device instead
+ 	 */
+	if (is_vlan_dev(dev))
+		dev = vlan_dev_real_dev(dev);
+
 	if (dev->ethtool_ops && dev->ethtool_ops->get_flags)
 		flags = dev->ethtool_ops->get_flags(dev);
 	else
-- 
1.7.5.1

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