bridge: add br_vlan_get_proto()

This new function allows you to fetch the bridge port vlan protocol.

Signed-off-by: wenxu <wenxu@ucloud.cn>
Acked-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

1 files changed, 6 insertions, 0 deletions

diff --git a/include/linux/if_bridge.h b/include/linux/if_bridge.h
index 950db1dad830..9e57c4411734 100644
--- a/include/linux/if_bridge.h
+++ b/include/linux/if_bridge.h
@@ -89,6 +89,7 @@ static inline bool br_multicast_router(const struct net_device *dev)
 bool br_vlan_enabled(const struct net_device *dev);
 int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid);
 int br_vlan_get_pvid_rcu(const struct net_device *dev, u16 *p_pvid);
+int br_vlan_get_proto(const struct net_device *dev, u16 *p_proto);
 int br_vlan_get_info(const struct net_device *dev, u16 vid,
                      struct bridge_vlan_info *p_vinfo);
 #else
@@ -102,6 +103,11 @@ static inline int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid)
         return -EINVAL;
 }
 
+static inline int br_vlan_get_proto(const struct net_device *dev, u16 *p_proto)
+{
+        return -EINVAL;
+}
+
 static inline int br_vlan_get_pvid_rcu(const struct net_device *dev, u16 *p_pvid)
 {
         return -EINVAL;