netdev - Re: [PATCH net-next V3 0/4] Introduce mlx5 ethernet timestamping

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Message-ID: <CALzJLG_BH1uZR=R49Kzjvv7Gm3NGw0tiL9k61Hw_tra4CGhkHw@mail.gmail.com>
Date:	Mon, 4 Jan 2016 23:57:40 +0200
From:	Saeed Mahameed <saeedm@....mellanox.co.il>
To:	Saeed Mahameed <saeedm@...lanox.com>
Cc:	"David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
	Richard Cochran <richardcochran@...il.com>,
	Or Gerlitz <ogerlitz@...lanox.com>,
	Eran Ben Elisha <eranbe@...lanox.com>,
	Tal Alon <talal@...lanox.com>,
	Majd Dibbiny <majd@...lanox.com>,
	Achiad Shochat <achiad@...lanox.com>
Subject: Re: [PATCH net-next V3 0/4] Introduce mlx5 ethernet timestamping

Hi Dave,

Any chance you are giving this a shot ?

On Tue, Dec 29, 2015 at 2:58 PM, Saeed Mahameed <saeedm@...lanox.com> wrote:
> Hi Dave,
>
> This patch series introduces the support for ConnectX-4 timestamping
> and the PTP kernel interface.
>
> Changes from V2:
> net/mlx5_core: Introduce access function to read internal_timer
>         - Remove one line function
>         - Change function name
>
> net/mlx5e: Add HW timestamping (TS) support:
>         - Data path performance optimization (caching tstamp struct in rq,sq)
>         - Change read/write_lock_irqsave to read/write_lock
>         - Move ioctl functions to en_clock file
>         - Changed overflow start algorithm according to comments from Richard
>         - Move timestamp init/cleanup to open/close ndos.
>
> In details:
>
> 1st patch prevents the driver from modifying skb->data and SKB CB in
> device xmit function.
>
> 2nd patch adds the needed low level helpers for:
>         - Fetching the hardware clock (hardware internal timer)
>         - Parsing CQEs timestamps
>         - Device frequency capability
>
> 3rd patch adds new en_clock.c file that handles all needed timestamping
> operations:
>         - Internal clock structure initialization and other helper functions
>         - Added the needed ioctl for setting/getting the current timestamping
>           configuration.
>         - used this configuration in RX/TX data path to fill the SKB with
>           the timestamp.
>
> 4th patch Introduces PTP (PHC) support.
>
> Achiad Shochat (1):
>   net/mlx5e: Do not modify the TX SKB
>
> Eran Ben Elisha (3):
>   net/mlx5_core: Introduce access function to read internal timer
>   net/mlx5e: Add HW timestamping (TS) support
>   net/mlx5e: Add PTP Hardware Clock (PHC) support
>
>  drivers/net/ethernet/mellanox/mlx5/core/Kconfig    |    1 +
>  drivers/net/ethernet/mellanox/mlx5/core/Makefile   |    2 +-
>  drivers/net/ethernet/mellanox/mlx5/core/en.h       |   31 ++-
>  drivers/net/ethernet/mellanox/mlx5/core/en_clock.c |  287 ++++++++++++++++++++
>  .../net/ethernet/mellanox/mlx5/core/en_ethtool.c   |   30 ++
>  drivers/net/ethernet/mellanox/mlx5/core/en_main.c  |   24 ++-
>  drivers/net/ethernet/mellanox/mlx5/core/en_rx.c    |    9 +
>  drivers/net/ethernet/mellanox/mlx5/core/en_tx.c    |   85 ++++--
>  drivers/net/ethernet/mellanox/mlx5/core/main.c     |   13 +
>  .../net/ethernet/mellanox/mlx5/core/mlx5_core.h    |    1 +
>  include/linux/mlx5/device.h                        |   20 ++-
>  include/linux/mlx5/mlx5_ifc.h                      |    6 +-
>  12 files changed, 467 insertions(+), 42 deletions(-)
>  create mode 100644 drivers/net/ethernet/mellanox/mlx5/core/en_clock.c
>
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