1 files changed, 39 insertions, 0 deletions

diff --git a/include/net/dsa.h b/include/net/dsa.h
index ea47783d5695..33f40c1ec379 100644
--- a/include/net/dsa.h
+++ b/include/net/dsa.h
@@ -285,6 +285,12 @@ struct dsa_port {
 	 */
 	const struct dsa_netdevice_ops *netdev_ops;
 
+	/* List of MAC addresses that must be forwarded on this port.
+	 * These are only valid on CPU ports and DSA links.
+	 */
+	struct list_head	fdbs;
+	struct list_head	mdbs;
+
 	bool setup;
 };
 
@@ -299,6 +305,13 @@ struct dsa_link {
 	struct list_head list;
 };
 
+struct dsa_mac_addr {
+	unsigned char addr[ETH_ALEN];
+	u16 vid;
+	refcount_t refcount;
+	struct list_head list;
+};
+
 struct dsa_switch {
 	bool setup;
 
@@ -491,6 +504,32 @@ static inline unsigned int dsa_upstream_port(struct dsa_switch *ds, int port)
 	return dsa_towards_port(ds, cpu_dp->ds->index, cpu_dp->index);
 }
 
+/* Return true if this is the local port used to reach the CPU port */
+static inline bool dsa_is_upstream_port(struct dsa_switch *ds, int port)
+{
+	if (dsa_is_unused_port(ds, port))
+		return false;
+
+	return port == dsa_upstream_port(ds, port);
+}
+
+/* Return true if @upstream_ds is an upstream switch of @downstream_ds, meaning
+ * that the routing port from @downstream_ds to @upstream_ds is also the port
+ * which @downstream_ds uses to reach its dedicated CPU.
+ */
+static inline bool dsa_switch_is_upstream_of(struct dsa_switch *upstream_ds,
+					     struct dsa_switch *downstream_ds)
+{
+	int routing_port;
+
+	if (upstream_ds == downstream_ds)
+		return true;
+
+	routing_port = dsa_routing_port(downstream_ds, upstream_ds->index);
+
+	return dsa_is_upstream_port(downstream_ds, routing_port);
+}
+
 static inline bool dsa_port_is_vlan_filtering(const struct dsa_port *dp)
 {
 	const struct dsa_switch *ds = dp->ds;