Subject: Re: get device from file struct
From: Silviu Craciunas <silviu.craciunas@sbg.ac.at>
Reply-To: silviu.craciunas@sbg.ac.at
To: Stephen Hemminger <shemminger@osdl.org>
Cc: linux-kernel@vger.kernel.org
In-Reply-To: <20061213155346.0a9ecf20@freekitty>
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Date: Thu, 14 Dec 2006 14:03:28 +0100
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On Wed, 2006-12-13 at 15:53 -0800, Stephen Hemminger wrote:
> The connection between file and network device is through many
> layers and there is no direct binding. It could be 0 to N interfaces
> and even be data dependent. 

you mean protocol dependent? yes,it goes trough the layer of the vfs but
I thought there may be a way to get to the struct net_device from the
struct file. You have the dev_base which contains all devices and in the
net_device there is the ifindex which is the unique identifier. I guess
there is no way to know the ifindex directly from a socket struct.

thanks
silviu

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