netdev_master_upper_dev_get
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## 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.

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