>>>> ["Where's the code for CSMA/CD?"]
>>> It isn't really in a single place.  Part is clearly in the ethernet
>>> device driver code, and I believe the exponential backoff is
>>> further up the stack.
>> I believe you're mistaken. That code is implemented in hardware
>> (well, maybe in microcode for the hardware controller) for all
>> Ethernet devices I know about.
> I guess it depends on what you consider to be part of CSMA/CD.
> Exponential backoff definitely has functionality in the stack.

I've certainly never seen anything like it in any Ethernet driver I've
ever looked at.  I'd very much appreciate a pointer to the code.

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