3 files changed, 30 insertions, 7 deletions

diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c
index 2a739ad..ab2225d 100644
--- a/net/8021q/vlan.c
+++ b/net/8021q/vlan.c
@@ -382,6 +382,18 @@ static void vlan_sync_address(struct net_device *dev,
 	memcpy(vlan->real_dev_addr, dev->dev_addr, ETH_ALEN);
 }
 
+static void vlan_transfer_features(struct net_device *dev,
+				   struct net_device *vlandev)
+{
+	unsigned long old_features = vlandev->features;
+
+	vlandev->features &= ~dev->vlan_features;
+	vlandev->features |= dev->features & dev->vlan_features;
+
+	if (old_features != vlandev->features)
+		netdev_features_change(vlandev);
+}
+
 static void __vlan_device_event(struct net_device *dev, unsigned long event)
 {
 	switch (event) {
@@ -410,10 +422,8 @@ static int vlan_device_event(struct notifier_block *unused, unsigned long event,
 	int i, flgs;
 	struct net_device *vlandev;
 
-	if (is_vlan_dev(dev)) {
+	if (is_vlan_dev(dev))
 		__vlan_device_event(dev, event);
-		goto out;
-	}
 
 	grp = __vlan_find_group(dev);
 	if (!grp)
@@ -450,6 +460,18 @@ static int vlan_device_event(struct notifier_block *unused, unsigned long event,
 		}
 		break;
 
+	case NETDEV_FEAT_CHANGE:
+		/* Propagate device features to underlying device */
+		for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
+			vlandev = vlan_group_get_device(grp, i);
+			if (!vlandev)
+				continue;
+
+			vlan_transfer_features(dev, vlandev);
+		}
+
+		break;
+
 	case NETDEV_DOWN:
 		/* Put all VLANs for this dev in the down state too.  */
 		for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
diff --git a/net/8021q/vlan_dev.c b/net/8021q/vlan_dev.c
index c961f08..5d055c2 100644
--- a/net/8021q/vlan_dev.c
+++ b/net/8021q/vlan_dev.c
@@ -663,6 +663,8 @@ static int vlan_dev_init(struct net_device *dev)
 					  (1<<__LINK_STATE_DORMANT))) |
 		      (1<<__LINK_STATE_PRESENT);
 
+	dev->features |= real_dev->features & real_dev->vlan_features;
+
 	/* ipv6 shared card related stuff */
 	dev->dev_id = real_dev->dev_id;
 
diff --git a/net/8021q/vlanproc.c b/net/8021q/vlanproc.c
index daad006..08b54b5 100644
--- a/net/8021q/vlanproc.c
+++ b/net/8021q/vlanproc.c
@@ -176,12 +176,11 @@ int vlan_proc_add_dev(struct net_device *vlandev)
 	struct vlan_dev_info *dev_info = vlan_dev_info(vlandev);
 	struct vlan_net *vn = net_generic(dev_net(vlandev), vlan_net_id);
 
-	dev_info->dent = proc_create(vlandev->name, S_IFREG|S_IRUSR|S_IWUSR,
-				     vn->proc_vlan_dir, &vlandev_fops);
+	dev_info->dent =
+		proc_create_data(vlandev->name, S_IFREG|S_IRUSR|S_IWUSR,
+				 vn->proc_vlan_dir, &vlandev_fops, vlandev);
 	if (!dev_info->dent)
 		return -ENOBUFS;
-
-	dev_info->dent->data = vlandev;
 	return 0;
 }