|NETDEV_HAS_UPPER_DEV(9)||Network device support||NETDEV_HAS_UPPER_DEV(9)|
netdev_has_upper_dev - Check if device is linked to an upper device
bool netdev_has_upper_dev(struct net_device * dev, struct net_device * upper_dev);
Find out if a device is linked to specified upper device and return true in case it is. Note that this checks only immediate upper device, not through a complete stack of devices. The caller must hold the RTNL lock.
|January 2017||Kernel Hackers Manual 4.8.|