Re: [PATCH] [RFC v3] packet: experimental support for 64-bit timestamps

[Willem de Bruijn]

> 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