net/hsr: Use list_head (and rcu) instead of array for slave devices.

Signed-off-by: Arvid Brodin <arvid.brodin@alten.se>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 27 insertions, 2 deletions

diff --git a/net/hsr/hsr_slave.h b/net/hsr/hsr_slave.h
index 03c15fda39a8..3055022eddb3 100644
--- a/net/hsr/hsr_slave.h
+++ b/net/hsr/hsr_slave.h
@@ -14,10 +14,35 @@
 
 #include <linux/skbuff.h>
 #include <linux/netdevice.h>
+#include <linux/rtnetlink.h>
 #include "hsr_main.h"
 
-int hsr_add_slave(struct hsr_priv *hsr, struct net_device *dev, int idx);
-void hsr_del_slave(struct hsr_priv *hsr, int idx);
+int hsr_add_port(struct hsr_priv *hsr, struct net_device *dev,
+		 enum hsr_port_type pt);
+void hsr_del_port(struct hsr_port *port);
 rx_handler_result_t hsr_handle_frame(struct sk_buff **pskb);
 
+
+#define hsr_for_each_port(hsr, port) \
+	list_for_each_entry_rcu((port), &(hsr)->ports, port_list)
+
+
+static inline bool hsr_port_exists(const struct net_device *dev)
+{
+	return dev->rx_handler == hsr_handle_frame;
+}
+
+static inline struct hsr_port *hsr_port_get_rtnl(const struct net_device *dev)
+{
+	ASSERT_RTNL();
+	return hsr_port_exists(dev) ?
+				rtnl_dereference(dev->rx_handler_data) : NULL;
+}
+
+static inline struct hsr_port *hsr_port_get_rcu(const struct net_device *dev)
+{
+	return hsr_port_exists(dev) ?
+				rcu_dereference(dev->rx_handler_data) : NULL;
+}
+
 #endif /* __HSR_SLAVE_H */