Re: [Linuxptp-users] Hardware PTP clock synchronization

[Richard C. <ric...@gm...>]

On Thu, Aug 01, 2013 at 05:44:37PM +0000, Keller, Jacob E wrote:

> > I encountered a problem while obtaining the time from the adapter Intel
> > pro1000 (82576).

...

> > ptp4l[3704.267]: selected /dev/ptp0 as PTP clock
> > ptp4l[3704.278]: port 1: INITIALIZING to LISTENING on INITIALIZE
> > ptp4l[3704.278]: port 0: INITIALIZING to LISTENING on INITIALIZE
> > ptp4l[3705.077]: port 1: new foreign master ece555.fffe.2de639-2
> > ptp4l[3709.401]: selected best master clock ece555.fffe.2de639
> > ptp4l[3709.401]: port 1: LISTENING to UNCALIBRATED on RS_SLAVE
> > ptp4l[3710.039]: recvmsg tx timestamp failed: Resource temporarily
> > unavailable
> 
> This means your tx timestamp is not being properly detected. I don't
> know for sure why this is, but there are a few reasons. I will
> forward this to the intel engineer who designed the driver for this
> part.

I wrote the original igb ptp code, but I never tested the 82576
because I don't have one. I am not sure if Intel tested this either.

How about just increasing the tx_timestamp_timeout configuration
option to 100 or 1000?

Thanks,
Richard