linux-kernel - Re: [PATCH net-next 0/6] gve: Add Rx HW timestamping support

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Message-ID: <CAG-FcCN-a_v33_d_+qLSqVy+heACB5JcXtiBXP63Q1DyZU+5vw@mail.gmail.com>
Date: Wed, 23 Apr 2025 13:46:47 -0700
From: Ziwei Xiao <ziweixiao@...gle.com>
To: Vadim Fedorenko <vadim.fedorenko@...ux.dev>
Cc: Harshitha Ramamurthy <hramamurthy@...gle.com>, netdev@...r.kernel.org, davem@...emloft.net, 
	edumazet@...gle.com, kuba@...nel.org, pabeni@...hat.com, jeroendb@...gle.com, 
	andrew+netdev@...n.ch, willemb@...gle.com, pkaligineedi@...gle.com, 
	yyd@...gle.com, joshwash@...gle.com, shailend@...gle.com, linux@...blig.org, 
	thostet@...gle.com, jfraker@...gle.com, horms@...nel.org, 
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next 0/6] gve: Add Rx HW timestamping support

On Wed, Apr 23, 2025 at 3:13 AM Vadim Fedorenko
<vadim.fedorenko@...ux.dev> wrote:
>
> On 18/04/2025 23:12, Harshitha Ramamurthy wrote:
> > From: Ziwei Xiao <ziweixiao@...gle.com>
> >
> > This patch series add the support of Rx HW timestamping, which sends
> > adminq commands periodically to the device for clock synchronization with
> > the nic.
>
> It looks more like other PHC devices, but no PTP clock is exported. Do
> you plan to implement TX HW timestamps for this device later?
> Is it possible to use timecounter to provide proper PTP device on top of
> GVE?
Yes, the TX HW timestamps and PTP device work is undergoing. Those
would be sent out in separate patch series when they are ready.
>
> >
> > John Fraker (5):
> >    gve: Add device option for nic clock synchronization
> >    gve: Add adminq command to report nic timestamp.
> >    gve: Add rx hardware timestamp expansion
> >    gve: Add support for SIOC[GS]HWTSTAMP IOCTLs
> >    gve: Advertise support for rx hardware timestamping
> >
> > Kevin Yang (1):
> >    gve: Add initial gve_clock
> >
> >   drivers/net/ethernet/google/gve/Makefile      |   2 +-
> >   drivers/net/ethernet/google/gve/gve.h         |  14 +++
> >   drivers/net/ethernet/google/gve/gve_adminq.c  |  51 ++++++++-
> >   drivers/net/ethernet/google/gve/gve_adminq.h  |  26 +++++
> >   drivers/net/ethernet/google/gve/gve_clock.c   | 103 ++++++++++++++++++
> >   .../net/ethernet/google/gve/gve_desc_dqo.h    |   3 +-
> >   drivers/net/ethernet/google/gve/gve_ethtool.c |  23 +++-
> >   drivers/net/ethernet/google/gve/gve_main.c    |  47 ++++++++
> >   drivers/net/ethernet/google/gve/gve_rx_dqo.c  |  26 +++++
> >   9 files changed, 290 insertions(+), 5 deletions(-)
> >   create mode 100644 drivers/net/ethernet/google/gve/gve_clock.c
> >
>