[PATCH 4.4 32/36] net: mpls: Pull common label check into helper

4.4-stable review patch. If anyone has any objections, please let me know. -- From: David Ahern commit b7b386f42f079b25b942c756820e36c6bd09b2ca upstream. mpls_route_add and mpls_route_del have the same checks on the label. Move to a helper. Avoid duplicate

[PATCH 4.4 32/36] net: mpls: Pull common label check into helper

4.4-stable review patch. If anyone has any objections, please let me know. -- From: David Ahern commit b7b386f42f079b25b942c756820e36c6bd09b2ca upstream. mpls_route_add and mpls_route_del have the same checks on the label. Move to a helper. Avoid duplicate extack messages in