Date: Wed, 19 Oct 2005 12:42:40 +0200
From: Erik Mouw <erik@harddisk-recovery.com>
To: Karel Kulhavy <clock@twibright.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: number of eth0 device
Message-ID: <20051019104240.GC31526@harddisk-recovery.com>
References: <20051019103135.GA9765@kestrel>
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On Wed, Oct 19, 2005 at 12:31:35PM +0200, Karel Kulhavy wrote:
> I am looking into Documentation/devices.txt in 2.4.25 and eth0 is not listed
> there. If I grep "eth", I get only
> 
> 38 char        Myricom PCI Myrinet board
> [...]
> "This device is used for status query, board control and "user level
> packet I/O."  This board is also accessible as a standard networking
> "eth" device.  "
> 
> and then
> 
> /dev/pethr0
> 
> Is eth0 some kind of special device that doesn't have any number
> assigned?

Yes, there's no such thing as /dev/eth0, network interfaces have their
own namespace. Linux uses the defacto standard BSD socket interface for
networking, so blame the BSD people for violating the "everything is a
file" rule.


Erik

-- 
+-- Erik Mouw -- www.harddisk-recovery.com -- +31 70 370 12 90 --
| Lab address: Delftechpark 26, 2628 XH, Delft, The Netherlands
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