> Thanks for the review! Any suggestions for how to do the testing? If you have > existing test cases, could you give my next version a test run to see if there > are any regressions and if the timestamps work as expected? > > I see that there are test cases in tools/testing/selftests/net/, but none > of them seem to use the time stamps so far, and I'm not overly familiar > with how it works in the details to extend it in a meaningful way.
I could not find any good tests for this interface, either. The only user of the interface I found was a little tool I wrote a few years ago that compares timestamps at multiple points in the transmit path for latency measurement [1]. But it may be easier to just write a new test under tools/testing/selftests/net for this purpose. I can help with that, too, if you want. [1] https://github.com/wdebruij/kerneltools/blob/master/tools/tcplate/tcplate.c
