linux-kernel - [ 25/48] macvlan: Initialize vlan

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Message-Id: <20141116215329.691547353@1wt.eu>
Date:	Sun, 16 Nov 2014 22:53:53 +0100
From:	Willy Tarreau <w@....eu>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	Vlad Yasevich <vyasevic@...hat.com>,
	"David S. Miller" <davem@...emloft.net>, Willy Tarreau <w@....eu>
Subject: [ 25/48] macvlan: Initialize vlan_features to turn on offload

2.6.32-longterm review patch.  If anyone has any objections, please let me know.

------------------
 support.

From: Vlad Yasevich <vyasevic@...hat.com>

[ Upstream commit 081e83a78db9b0ae1f5eabc2dedecc865f509b98 ]

Macvlan devices do not initialize vlan_features.  As a result,
any vlan devices configured on top of macvlans perform very poorly.
Initialize vlan_features based on the vlan features of the lower-level
device.

Signed-off-by: Vlad Yasevich <vyasevic@...hat.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Willy Tarreau <w@....eu>
---
 drivers/net/macvlan.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/macvlan.c b/drivers/net/macvlan.c
index 2490aa3..47ff740 100644
--- a/drivers/net/macvlan.c
+++ b/drivers/net/macvlan.c
@@ -360,6 +360,7 @@ static int macvlan_init(struct net_device *dev)
 	dev->state		= (dev->state & ~MACVLAN_STATE_MASK) |
 				  (lowerdev->state & MACVLAN_STATE_MASK);
 	dev->features 		= lowerdev->features & MACVLAN_FEATURES;
+	dev->vlan_features	= lowerdev->vlan_features & MACVLAN_FEATURES;
 	dev->gso_max_size	= lowerdev->gso_max_size;
 	dev->iflink		= lowerdev->ifindex;
 	dev->hard_header_len	= lowerdev->hard_header_len;
-- 
1.7.12.2.21.g234cd45.dirty



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