bridge: switchdev: Use an helper to clear forward mark

Instead of using ifdef in the C file.
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Suggested-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Tested-by: Yotam Gigi <yotamg@mellanox.com>
Acked-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/bridge/br_device.c

@@ -53,9 +53,7 @@ netdev_tx_t br_dev_xmit(struct sk_buff *skb, struct net_device *dev)
 	brstats->tx_bytes += skb->len;
 	u64_stats_update_end(&brstats->syncp);
 
-#ifdef CONFIG_NET_SWITCHDEV
-	skb->offload_fwd_mark = 0;
-#endif
+	br_switchdev_frame_unmark(skb);
 	BR_INPUT_SKB_CB(skb)->brdev = dev;
 
 	skb_reset_mac_header(skb);

net/bridge/br_private.h

@@ -1091,6 +1091,11 @@ int br_switchdev_set_port_flag(struct net_bridge_port *p,
 			       unsigned long mask);
 void br_switchdev_fdb_notify(const struct net_bridge_fdb_entry *fdb,
 			     int type);
+
+static inline void br_switchdev_frame_unmark(struct sk_buff *skb)
+{
+	skb->offload_fwd_mark = 0;
+}
 #else
 static inline int nbp_switchdev_mark_set(struct net_bridge_port *p)
 {
@@ -1119,6 +1124,10 @@ static inline void
 br_switchdev_fdb_notify(const struct net_bridge_fdb_entry *fdb, int type)
 {
 }
+
+static inline void br_switchdev_frame_unmark(struct sk_buff *skb)
+{
+}
 #endif /* CONFIG_NET_SWITCHDEV */
 
 #endif