Re: [Linuxptp-users] recvmsg tx timestamp failed: Resource temporarily unavailable

[Rayagond K. <ray...@gm...>]

Thank you Richard, I will implement .adjfreq and use default.cfg and test
it and let you know.

On 5 February 2013 22:20, Richard Cochran <ric...@gm...> wrote:

> On Tue, Feb 05, 2013 at 09:23:03PM +0530, Rayagond Kokatanur wrote:
> >
> > I am not getting how to write configuration file that can be provided as
> > input to *ptp4l, *please send me one example.
>
> There are two example files in the code, default.cfg, and gPTP.cfg.
> I would start with the first one.
>
> > Yes, it is unpublished driver and I referred Linux driver and document
> and
> > added PTP support into my driver.
> >
> > I have written PHC driver, but its not yet complete, need to implement
> some
> > other clock operations like .adjfreq and .enable.
>
> You can leave .enable as a stub, but you must implement the other
> methods, otherwise you won't be able to run PTP.
>
> > My test setup is as below,
> >
> > 1. Two system connected back to back and both the system running Linux
> > 3.1.1 kernel.
> > 2. On one side my HW and driver is running and on other side realteck
> 8169
> > driver is running. I modified the realteck driver to support software
> > timestamping ie added "skb_tx_timestamp()" in start_xmit function. Since
> I
> > don't have other NIC card that support HW time stamping, so I am using
> > software timestaping on other side.
> >
> > So is it possible to do basic validation/tetsing of PTP using above
> setup ?
>
> Yes, I think so.
>
> > Feb  5 20:11:04 snps ptp4l: [17640.898] failed to adjust the clock:
> > Operation not supported
>
> Because your driver isn't finished.
>
> > I am new to PTP so not able to understand the above log completely,
> please
> > let me know if my test setup is correct or not.
>
> Looks okay to me.
>
> HTH,
> Richard
>