1NETDEV_MASTER_UPPER_(9)     Network device support     NETDEV_MASTER_UPPER_(9)
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NAME

6       netdev_master_upper_dev_link_rh - Add a master link to the upper device
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SYNOPSIS

9       int netdev_master_upper_dev_link_rh(struct net_device * dev,
10                                           struct net_device * upper_dev,
11                                           void * upper_priv,
12                                           void * upper_info);
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ARGUMENTS

15       dev
16           device
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18       upper_dev
19           new upper device
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21       upper_priv
22           upper device private
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24       upper_info
25           upper info to be passed down via notifier
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DESCRIPTION

28       Adds a link to device which is upper to this one. In this case, only
29       one master upper device can be linked, although other non-master
30       devices might be linked as well. The caller must hold the RTNL lock. On
31       a failure a negative errno code is returned. On success the reference
32       counts are adjusted and the function returns zero.
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35Kernel Hackers Manual 3.10         June 2019           NETDEV_MASTER_UPPER_(9)
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