Re: [Intel-wired-lan] [PATCH iwl-next v4] idpf: export RX hardware timestamping information to XDP

[Mina Almasry via Intel-wired-lan <intel-wired-lan@osuosl.org>]

On Sat, Jan 10, 2026 at 12:36 AM Paul Menzel <pmenzel@molgen.mpg.de> wrote:
>
> Dear Mina,
>
>
> Thank you for your patch. Some minor comments, should you resend.
>

Thanks, looks like I have reviews and this is on its way, but should I
resend I will fix the minor comments.

> Am 23.12.25 um 20:46 schrieb Mina Almasry via Intel-wired-lan:
> > From: YiFei Zhu <zhuyifei@google.com>
> >
> > The logic is similar to idpf_rx_hwtstamp, but the data is exported
> > as a BPF kfunc instead of appended to an skb to support grabbing
> > timestamps in xsk packets.
> >
> > A idpf_queue_has(PTP, rxq) condition is added to check the queue
> > supports PTP similar to idpf_rx_process_skb_fields.
> >
> > Tested using an xsk connection and checking xdp timestamps are
> > retreivable in received packets.
>
> retr*ie*vable
>
> It’d be great if you could share the commands.
>

I don't have easy repro to share in the commit message. The test
involves hacking up the xsk_rr Sami used for his busypolling patch to
enable xdp metadata and retrieve timestamps, or (what I did) actually
set up openonload with this patch and test onload can get the
timestamps. Let me see what I can do, but it's likely too much context
for someone unfamiliar to piece together.

-- 
Thanks,
Mina