net/core/rtnetlink.c:357: warning: No description found for return value of 'rtnl_register_module' net/core/rtnetlink.c:400: warning: No description found for return value of 'rtnl_unregister' net/core/rtnetlink.c:481: warning: No description found for return value of '__rtnl_link_register' net/core/rtnetlink.c:505: warning: No description found for return value of 'rtnl_link_register' net/core/rtnetlink.c:2228: warning: No description found for return value of 'rtnl_get_net_ns_capable' net/core/rtnetlink.c:4591: warning: No description found for return value of 'ndo_dflt_fdb_dump' net/core/rtnetlink.c:357: warning: No description found for return value of 'rtnl_register_module' net/core/rtnetlink.c:400: warning: No description found for return value of 'rtnl_unregister' net/core/rtnetlink.c:481: warning: No description found for return value of '__rtnl_link_register' net/core/rtnetlink.c:505: warning: No description found for return value of 'rtnl_link_register' net/core/rtnetlink.c:2228: warning: No description found for return value of 'rtnl_get_net_ns_capable' net/core/rtnetlink.c:4597: warning: No description found for return value of 'ndo_dflt_fdb_dump'