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Subject: Re: [net] protecting interfaces from races between control and data ?
From: Adrian Chadd <adrian@freebsd.org>
To: Navdeep Parhar <np@freebsd.org>
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Cc: Bryan Venteicher <bryanv@daemoninthecloset.org>,
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.. and I bet it's not a design pattern, and this is total conjecture on my part:

* the original drivers weren't SMP safe;
* noone really sat down and figured out how to correctly synchronise
all of this stuff;
* people did the minimum amount of work to keep the driver from
immediately crashing, but didn't really think things through at a
larger scale.

Almost every driver is this way Luigi. :-)



-adrian