net: introduce vlan_vid_[add/del] and use them instead of direct [add/kill]_vid ndo calls

This patch adds wrapper for ndo_vlan_rx_add_vid/ndo_vlan_rx_kill_vid
functions. Check for NETIF_F_HW_VLAN_FILTER feature is done in this
wrapper.

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/macvlan.c b/drivers/net/macvlan.c
index 2511bc5..f2f820c 100644
--- a/drivers/net/macvlan.c
+++ b/drivers/net/macvlan.c
@@ -26,6 +26,7 @@
 #include <linux/etherdevice.h>
 #include <linux/ethtool.h>
 #include <linux/if_arp.h>
+#include <linux/if_vlan.h>
 #include <linux/if_link.h>
 #include <linux/if_macvlan.h>
 #include <net/rtnetlink.h>
@@ -525,11 +526,8 @@
 {
 	struct macvlan_dev *vlan = netdev_priv(dev);
 	struct net_device *lowerdev = vlan->lowerdev;
-	const struct net_device_ops *ops = lowerdev->netdev_ops;
 
-	if (ops->ndo_vlan_rx_add_vid)
-		return ops->ndo_vlan_rx_add_vid(lowerdev, vid);
-	return 0;
+	return vlan_vid_add(lowerdev, vid);
 }
 
 static int macvlan_vlan_rx_kill_vid(struct net_device *dev,
@@ -537,10 +535,8 @@
 {
 	struct macvlan_dev *vlan = netdev_priv(dev);
 	struct net_device *lowerdev = vlan->lowerdev;
-	const struct net_device_ops *ops = lowerdev->netdev_ops;
 
-	if (ops->ndo_vlan_rx_kill_vid)
-		return ops->ndo_vlan_rx_kill_vid(lowerdev, vid);
+	vlan_vid_del(lowerdev, vid);
 	return 0;
 }