Re: [PATCH net-next 0/5] PTP support for the SJA1105 DSA driver

[Richard Cochran]

On Fri, May 31, 2019 at 09:12:03PM +0300, Vladimir Oltean wrote:
> It won't work unless I make changes to dsa_switch_rcv.

Or to the tagging code.

> Right now taggers can only return a pointer to the skb, or NULL, case
> in which DSA will free it.

The tagger can re-write the skb.  Why not reform it into a PTP frame?
This clever trick is what the phyter does in hardware.  See dp83640.c.

Thanks,
Richard