On Wednesday 30 July 2008, Ingo Oeser wrote:

quoted

This patches adds TX timestamping support and is main use case is the
Precision Time Protocol (IEEE 1588). Both software and hardware
timestamping can be used.

Could you please include an example on how to use
this in userspace?

A proper place for this would be Documentation/net/

At the moment I cannot imagine how to use this and how
to correlate the sent packet with the timestamp.

That would also be a way to test your implementation and
test any changes done later to it. This will avoid future bitrot.

Yes, of course. 

I am also planning to add mac/network/transport layer pointers in the 
sock_extended_err, so that the application can easily "navigate"  the packet 
in the error queue and map it to the sent packet. 

Thanks for the input!

tavi