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NETDEV_HAS_UPPER_DEV(9) Network device support NETDEV_HAS_UPPER_DEV(9)

NAME

netdev_has_upper_dev_all_rcu - Check if device is linked to an upper device

SYNOPSIS

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

ARGUMENTS

struct net_device * dev
device

struct net_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 the entire upper device chain. The caller must hold rcu lock.

COPYRIGHT

September 2017 Kernel Hackers Manual 4.12