From: Andy Lutomirski <luto@amacapital.net>
To: Richard Cochran <richardcochran@gmail.com>
Cc: Network Development <netdev@vger.kernel.org>
Subject: Re: What is SOF_TIMESTAMPING_RX_HARDWARE?
Date: Tue, 4 Mar 2014 09:45:08 -0800 [thread overview]
Message-ID: <CALCETrWZ8kBFDMmUAjKrwndLWEo70OQv3rFSTXdLOyMGy-095Q@mail.gmail.com> (raw)
In-Reply-To: <20140304174200.GB4279@netboy>
On Tue, Mar 4, 2014 at 9:42 AM, Richard Cochran
<richardcochran@gmail.com> wrote:
> On Tue, Mar 04, 2014 at 09:21:47AM -0800, Andy Lutomirski wrote:
>>
>> In theory, the driver could stop reporting timestamps if
>> SOF_TIMESTAMPING_RAW_HARDWARE: and SOF_TIMESTAMPING_SYS_HARDWARE
>> aren't set. I don't see why SOF_TIMESTAMPING_RX_HARDWARE would make
>> any sense in this context.
>
> AFAICT, the intent was that the former are handled by the stack, while
> the latter is handled by the driver.
I suspect that any attempt to implement this will break userspace --
there must be programs my now (like mine!) that set
SOF_TIMESTAMPING_SYS_HARDWARE but not SOF_TIMESTAMPING_RX_HARDWARE.
I'll write a documentation patch.
--Andy
prev parent reply other threads:[~2014-03-04 18:45 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-04 2:20 What is SOF_TIMESTAMPING_RX_HARDWARE? Andy Lutomirski
2014-03-04 10:10 ` Richard Cochran
2014-03-04 17:21 ` Andy Lutomirski
2014-03-04 17:38 ` Richard Cochran
2014-03-04 17:42 ` Richard Cochran
2014-03-04 17:45 ` Andy Lutomirski [this message]
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