linux-kernel - Re: get device from file struct

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Message-Id: <1166101408.6186.7.camel@ThinkPadCK6>
Date:	Thu, 14 Dec 2006 14:03:28 +0100
From:	Silviu Craciunas <silviu.craciunas@....ac.at>
To:	Stephen Hemminger <shemminger@...l.org>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: get device from file struct

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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