centos man page for netdev_master_upper_dev_get

NETDEV_MASTER_UPPER_(9) 				      Network device support					   NETDEV_MASTER_UPPER_(9)

NAME
       netdev_master_upper_dev_get - Get master upper device

SYNOPSIS
       struct net_device * netdev_master_upper_dev_get(struct net_device * dev);

ARGUMENTS
       dev
	   device

DESCRIPTION
       Find a master upper device and return pointer to it or NULL in case it's not there. The caller must hold the RTNL lock.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014						   NETDEV_MASTER_UPPER_(9)