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__DEV_GET_BY_INDEX(9) Network device support __DEV_GET_BY_INDEX(9)

NAME

__dev_get_by_index - find a device by its ifindex

SYNOPSIS

struct net_device * __dev_get_by_index(struct net * net, int ifindex);

ARGUMENTS

struct net * net
the applicable net namespace

int ifindex

index of device

DESCRIPTION

Search for an interface by index. Returns NULL if the device is not found or a pointer to the device. The device has not had its reference counter increased so the caller must be careful about locking. The caller must hold either the RTNL semaphore or dev_base_lock.

COPYRIGHT

September 2017 Kernel Hackers Manual 4.12