netdev - Re: [PATCH mlx5-next 1/2] net/mlx5: Add new timestamp mode bits

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Message-ID: <20210209191424.GE139298@unreal>
Date:   Tue, 9 Feb 2021 21:14:24 +0200
From:   Leon Romanovsky <leon@...nel.org>
To:     Jakub Kicinski <kuba@...nel.org>
Cc:     Doug Ledford <dledford@...hat.com>,
        Jason Gunthorpe <jgg@...dia.com>,
        Aharon Landau <aharonl@...dia.com>, linux-rdma@...r.kernel.org,
        Maor Gottlieb <maorg@...dia.com>, netdev@...r.kernel.org,
        Saeed Mahameed <saeedm@...dia.com>
Subject: Re: [PATCH mlx5-next 1/2] net/mlx5: Add new timestamp mode bits

On Tue, Feb 09, 2021 at 10:28:25AM -0800, Jakub Kicinski wrote:
> On Tue,  9 Feb 2021 15:11:06 +0200 Leon Romanovsky wrote:
> > From: Aharon Landau <aharonl@...dia.com>
> >
> > These fields declare which timestamp mode is supported by the device
> > per RQ/SQ/QP.
> >
> > In addiition add the ts_format field to the select the mode for
> > RQ/SQ/QP.
> >
> > Signed-off-by: Aharon Landau <aharonl@...dia.com>
> > Signed-off-by: Maor Gottlieb <maorg@...dia.com>
> > Signed-off-by: Leon Romanovsky <leonro@...dia.com>
>
> We only got patch 1 which explains very little.

I will change my scripts to ensure that all people will be always CCed
on whole series.

https://lore.kernel.org/linux-rdma/20210209131107.698833-3-leon@kernel.org

>
> You also need to CC Richard.

We are not talking about PTP, but about specific to RDMA timestamp mechanism
which is added to the CQE (completion queue entry) per-user request when
he/she creates CQ (completion queue). User has an option to choose the format
of it for every QP/RQ/SQ.

https://github.com/linux-rdma/rdma-core/blob/master/libibverbs/man/ibv_create_cq_ex.3#L44

Thanks