How does Wireshark implement protocol stack?

[吴斌斌 <sqbing () gmail com>]

Hi there:
My team is now working on a data capture device.
We can get all data from wire, from LLC layer to application layer. But we
don't know how to parse packets. I know Wireshark allows developers to
reach their own protocol parser based on protocol charectoristics, ports or
so. You must have designed a high-performance packet parser. So what is it?
Which license is it under?
THANK YOU.

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