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Re: newbie - packet trace software

I have had great luck using the Ellisys USB Tracker 110 hardware device.  It isn't too expensive, is small and gets the job done.  I have no connection to Ellisys, just a customer, but this little device recently helped me track down a queueing problem that would have been difficult without it.  It showed the data actually flowing between the host and the device, exclusive of software driver effect. 


Date: Tue, 11 Oct 2005 13:10:18 -0600
From: Fernando Urbina <email@hidden>
Subject: Re: newbie - packet trace software
To: Robert G Palmer Jr <email@hidden>
Cc: email@hidden
Message-ID: <email@hidden>
Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed

It is not possible without modifying the USB stack.  Even if you were  
to modify the USB stack, I can't see how you could get all the  
packets that the controller puts on the bus (think isoch).  The  
KernelDebugKit won't help you any.
--
Fernando Urbina
USB Technology Team
Apple Computer, Inc.

On Oct 11, 2005, at 11:49 AM, Robert G Palmer Jr wrote:

> "There is no facility" - does that mean that it is not possible  
> (without modifying the USB stack), or just that no one has done  
> it?  What about if I have the KernelDebugKit, does that provide the  
> facility to do it?
>

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