linux-kernel - interface index

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Message-Id: <3B5FFAA5-F608-4F43-B510-BF70BC5DC225@gmail.com>
Date:	Thu, 16 Jul 2009 11:32:10 +0200
From:	Patrick Rittiner <rittiner@...il.com>
To:	linux-kernel@...r.kernel.org
Subject: interface index

hello,

can someone tell me how I can get the interface index of a socket  
connection in kernel space? I mean ow can I use this call in kernel  
space:
	ioctl(sock, SIOCGIFFLAGS, &ifInfo)
I need it to bind the socket to a ethernet interface.
thanks a lot
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