What is the copyright status of this code?

[shersey-locus]

I'm interested in adding PTP functionality to a commercial product I support, so I need to make sure I'm complying with all the applicable licenses and not infringing anyone's copyright. The source modules lack copyright headers, and there's no top-level license file, so I'm in the dark as to whether I can appropriately use this code.

Can you clarify?

Thanks,
Steve Hersey