wade
On Tue, May 5, 2009 at 3:11 PM, Srinivas M.A. <srinivas.aji@xxxxxxxxx> wrote:
Network interfaces don't show up in /dev in Linux anyway. When tap0,
tap1, etc are created, they will show up in "ifconfig -a" and you can
add them to bridges at that point. /dev/net/tun should be the only
thing you need in /dev.
I think /dev/tapX is an older interface.
If your user program is trying to use the /dev/tapX devices, you could
modify it to use /dev/net/tun and connect to the right device using
the ioctl as described in Documentation/tuntap.txt in the Linux
source.
On Mon, May 4, 2009 at 2:47 PM, Wade Maxfield <wmaxfield@xxxxxxxxx> wrote:
>
> I'm trying to use bridging and TUN/TAP on uClinux on Nios processor, on an
> Altera fpga.
>
> I downloaded the source for tunctl and it compiled and runs just fine.
>
> It says it created tap0, tap1, tap2, etc., but they don't show up in the
> /dev directory.
>
> I'm assuming because there is no demon to create these entries.
>
> I looked at Ubuntu, and saw the /dev/tapx entries are major, minor
> 36,16.
>
> However, the /dev/net/tun in the uClinux is 200,10.
>
> My question is this: If I create /dev/tap0 in the /dev directory, which
> Major,Minor number should I give it?
>
> I'm a little fuzzy on this. I'm assuming if the Major/Minor numbers are
> wrong, the brctl program won't be able to use the tap0 interface.
>
> I want to do this, ultimately:
>
> [ethernet]----[kernel bridge]---[tap]---(user program)------data
> link------(user program)---[tap]---[kernel bridge]--[ethernet]
>
> The data link is non standard and proprietary. The goal is to bridge the
> two ethernets.
>
> Can someone give me some heads up? Any pointers would be appreciated!!!
>
> thanks,
> Wade
>
>
>
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