netdev - [Patch net] macvlan: add NETIF_F_NETNS

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Message-Id: <1392082593-7742-1-git-send-email-xiyou.wangcong@gmail.com>
Date:	Mon, 10 Feb 2014 17:36:33 -0800
From:	Cong Wang <xiyou.wangcong@...il.com>
To:	netdev@...r.kernel.org
Cc:	Patrick McHardy <kaber@...sh.net>,
	"David S. Miller" <davem@...emloft.net>,
	Cong Wang <cwang@...pensource.com>,
	Cong Wang <xiyou.wangcong@...il.com>
Subject: [Patch net] macvlan: add NETIF_F_NETNS_LOCAL flag

From: Cong Wang <cwang@...pensource.com>

BZ: https://bugzilla.kernel.org/show_bug.cgi?id=66691

There is no point to allow moving a macvlan device to
another namespace while the lower device is still in
this namespace. tunnels already set this flag.

Cc: Patrick McHardy <kaber@...sh.net>
Cc: David S. Miller <davem@...emloft.net>
Signed-off-by: Cong Wang <cwang@...pensource.com>
Signed-off-by: Cong Wang <xiyou.wangcong@...il.com>

---
diff --git a/drivers/net/macvlan.c b/drivers/net/macvlan.c
index 8433de4..9bc3b13 100644
--- a/drivers/net/macvlan.c
+++ b/drivers/net/macvlan.c
@@ -539,7 +539,7 @@ 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->features		|= NETIF_F_LLTX;
+	dev->features		|= NETIF_F_LLTX | NETIF_F_NETNS_LOCAL;
 	dev->gso_max_size	= lowerdev->gso_max_size;
 	dev->iflink		= lowerdev->ifindex;
 	dev->hard_header_len	= lowerdev->hard_header_len;
@@ -699,7 +699,7 @@ static netdev_features_t macvlan_fix_features(struct net_device *dev,
 	features = netdev_increment_features(vlan->lowerdev->features,
 					     features,
 					     mask);
-	features |= NETIF_F_LLTX;
+	features |= NETIF_F_LLTX | NETIF_F_NETNS_LOCAL;
 
 	return features;
 }
--
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