netdev - Re: [PATCH net-next 2/3] net-timestamp: add OPT_ID

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Message-ID: <CAL+tcoD+Xn0s01ZqfaTRcUOLU7HfLx06FcWKabTcenCXPnXoQQ@mail.gmail.com>
Date: Mon, 30 Sep 2024 19:49:27 +0800
From: Jason Xing <kerneljasonxing@...il.com>
To: Willem de Bruijn <willemdebruijn.kernel@...il.com>
Cc: davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org, 
	pabeni@...hat.com, dsahern@...nel.org, shuah@...nel.org, willemb@...gle.com, 
	linux-kselftest@...r.kernel.org, netdev@...r.kernel.org, 
	Jason Xing <kernelxing@...cent.com>
Subject: Re: [PATCH net-next 2/3] net-timestamp: add OPT_ID_TCP test in selftests

On Mon, Sep 30, 2024 at 6:42 PM Willem de Bruijn
<willemdebruijn.kernel@...il.com> wrote:
>
> Jason Xing wrote:
> > From: Jason Xing <kernelxing@...cent.com>
> >
> > Introduce a test for SOF_TIMESTAMPING_OPT_ID_TCP for TCP proto so
> > that we can get aware of whether using write_seq as an initial key
> > value works as expected.
>
> Does the test behave different with this flag set?
>

Sorry, my mistake, the last email is not open to the mailing list. So
I copy that here.

Not that much, only at the very beginning, this new test will use
write_seq directly.

I once thought and wondered if I need to setsockopt() when one or two
sendmsg() are already done, then we check the behaviour of subsequent
sendmsg() calls. Then I changed my mind because it's a bit complex. Do
you think it's a good way to test?

Thanks,
Jason