'\" t
.\"     Title: netdev_has_upper_dev
.\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\"      Date: January 2017
.\"    Manual: Network device support
.\"    Source: Kernel Hackers Manual 4.8.15
.\"  Language: English
.\"
.TH "NETDEV_HAS_UPPER_DEV" "9" "January 2017" "Kernel Hackers Manual 4\&.8\&." "Network device support"
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.SH "NAME"
netdev_has_upper_dev \- Check if device is linked to an upper device
.SH "SYNOPSIS"
.HP \w'bool\ netdev_has_upper_dev('u
.BI "bool netdev_has_upper_dev(struct\ net_device\ *\ " "dev" ", struct\ net_device\ *\ " "upper_dev" ");"
.SH "ARGUMENTS"
.PP
\fIdev\fR
.RS 4
device
.RE
.PP
\fIupper_dev\fR
.RS 4
upper device to check
.RE
.SH "DESCRIPTION"
.PP
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\&.
.SH "COPYRIGHT"
.br