Re: [Linuxptp-users] unabel to start ptp4l service in centos 7.4

[Miroslav L. <mli...@re...>]

On Wed, Mar 13, 2019 at 06:47:56PM +0530, Raveendra Muniyappa wrote:
> I found some information regarding SOF_TIMESTAMPING_TX_SOFTWARE capability
> 
> 
> https://sourceforge.net/p/linuxptp/mailman/message/35474590/
> 
> 
> You need to add one line to the transmit path in the driver:
> 
> 	skb_tx_timestamp(skb);

> if I modify the nic driver with above changes then will ptp4l able to
> start the ptp service ?

Yes.

I'd suggest to look at the current Linux code. It's likely the driver
already has this call and you would just backport that change to your
kernel.

-- 
Miroslav Lichvar