AW: artificial USB test environment, any help appreciated

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> The newest modern hardware isn't going to use serial
> emulation anyway.

Hey Alan, could you be a little more detailed here? What will be the
technology they might use in the future? Is there a real life example, a
real piece of hardware already available using that technology?

> -----Ursprüngliche Nachricht-----
> Von: Alan Cox [mailto:alan@xxxxxxxxxxxxxxxxxxx]
> Gesendet: Montag, 13. September 2010 20:05
> An: Axel C. Voigt
> Cc: linux-usb@xxxxxxxxxxxxxxx
> Betreff: Re: artificial USB test environment, any help appreciated
> 
> > Could one give me a hint, how to create a test environment to
> artificially
> > test such a scenario? Could one be of any help whether I can simulate a
> usb
> > device in software?
> 
> Realistically I doubt. I'd have thought if you want to do this seriously
> you want a decent performance USB board capable of being a USB device (ie
> using the usb-gadget code) and writing an emulation of what you want to
> study, then run that across two PCs
> 
> The last time someone stress tested the tty core code we were doing ok
> with HSDPA. The newest modern hardware isn't going to use serial
> emulation anyway. The serial setup is brain dead especially if running in
> CMUX mode where you've got a serial link emulated over a multi channel
> packet based interface running a protocol to provide a multiple channel
> packet based interface each channel of which carries a serial emulation
> which carries an asynchronous framed PPP connection in order to map IP
> packets onto the emulated serial link.
> 
> If it had been anyone but a telco involved someone would have shot the
> poor beast before it got out of the lab !
> 
> Alan

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