Re: [RFC PATCH] net: macb: Process tx timestamp only on ptp packets

[Richard Cochran]

On Tue, Aug 24, 2021 at 08:59:20PM +0530, Harini Katakam wrote:
> Yes, there is no SW overhead because the  skb check ensures timestamp
> post processing is done only on requested packets. But the IP
> timestamps all packets
> because this is a register level setting, not per packet. That's the
> overhead I was referring to.

But the IP block time stamps the frames in silicon, no?

I don't see how that is "overhead" in any sense of the word.

Thanks,
Richard