net: bridge: add helper for retrieving the current bridge port STP state

[linux-2.6-microblaze.git] / net / bridge / br_stp.c

diff --git a/net/bridge/br_stp.c b/net/bridge/br_stp.c
index 21c6781..86b5e05 100644 (file)
--- a/net/bridge/br_stp.c
+++ b/net/bridge/br_stp.c
@@ -64,6 +64,20 @@ void br_set_state(struct net_bridge_port *p, unsigned int state)
        }
 }
 
+u8 br_port_get_stp_state(const struct net_device *dev)
+{
+       struct net_bridge_port *p;
+
+       ASSERT_RTNL();
+
+       p = br_port_get_rtnl(dev);
+       if (!p)
+               return BR_STATE_DISABLED;
+
+       return p->state;
+}
+EXPORT_SYMBOL_GPL(br_port_get_stp_state);
+
 /* called under bridge lock */
 struct net_bridge_port *br_get_port(struct net_bridge *br, u16 port_no)
 {