netdev_has_upper_dev (9) - Linux Manuals

netdev_has_upper_dev: Check if device is linked to an upper device

Command to display netdev_has_upper_dev manual in Linux: $ man 9 netdev_has_upper_dev

NAME

netdev_has_upper_dev - Check if device is linked to an upper device

SYNOPSIS

bool netdev_has_upper_dev(struct net_device * dev, struct net_device * upper_dev);

ARGUMENTS

dev

: device

upper_dev

: upper device to check

DESCRIPTION

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.