Add a default MTU size definition that new WWAN drivers can refer to.

Signed-off-by: Chandrashekar Devegowda <chandrashekar.devegowda@intel.com>
Signed-off-by: Ricardo Martinez <ricardo.martinez@linux.intel.com>
---
 include/linux/wwan.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/include/linux/wwan.h b/include/linux/wwan.h
index 9fac819f92e3..28934b7dd0ae 100644
--- a/include/linux/wwan.h
+++ b/include/linux/wwan.h

@@ -171,4 +171,9 @@ int wwan_register_ops(struct device *parent, const struct wwan_ops *ops,
 
 void wwan_unregister_ops(struct device *parent);
 
+/*
+ * Default WWAN interface MTU value
+ */
+#define WWAN_DEFAULT_MTU       1500
+
 #endif /* __WWAN_H */

-- 
2.17.1