Re: [Linuxptp-users] HWTSTAMP_TX_ONESTEP_SYNC vs HWTSTAMP_TX_ON

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

On Tue, Jul 30, 2013 at 10:12:51AM +0200, Miroslav Lichvar wrote:
> 
> Just curious, would it be possible to use the launch time feature of
> i210 to do onestep in software?

I thought about this, but it might be tricky:

1. user sends an event message.
2. network stack passes skb to driver.
3. driver picks a future time to send, updates the skb data.
4. driver places skb into the special queue.

The tricky part is to pick a safe future transmit time.

Thanks,
Richard