From: Richard Cochran <richardcochran@gmail.com>
To: Saeed Mahameed <saeedm@mellanox.com>
Cc: "David S. Miller" <davem@davemloft.net>,
netdev@vger.kernel.org, Or Gerlitz <ogerlitz@mellanox.com>,
Eran Ben Elisha <eranbe@mellanox.com>,
Tal Alon <talal@mellanox.com>, Majd Dibbiny <majd@mellanox.com>,
Achiad Shochat <achiad@mellanox.com>,
saeedm@dev.mellanox.co.il
Subject: Re: [PATCH net-next V2 4/4] net/mlx5e: Add PTP Hardware Clock (PHC) support
Date: Mon, 21 Dec 2015 10:16:46 +0100 [thread overview]
Message-ID: <20151221091646.GB2297@localhost.localdomain> (raw)
In-Reply-To: <1450647991-13736-5-git-send-email-saeedm@mellanox.com>
On Sun, Dec 20, 2015 at 11:46:31PM +0200, Saeed Mahameed wrote:
> From: Eran Ben Elisha <eranbe@mellanox.com>
>
> Add a PHC support to the mlx5_en driver. Use reader/writer spinlocks to
> protect the timecounter since every packet received needs to call
> timecounter_cycle2time() when timestamping is enabled. This can become
> a performance bottleneck with RSS and multiple receive queues if normal
> spinlocks are used.
>
> The driver has been tested with both Documentation/ptp/testptp and the
> linuxptp project (http://linuxptp.sourceforge.net/) on a Mellanox
> ConnectX-4 card.
>
> Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com>
> Cc: Richard Cochran <richardcochran@gmail.com>
> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Acked-by: Richard Cochran <richardcochran@gmail.com>
prev parent reply other threads:[~2015-12-21 9:16 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-20 21:46 [PATCH net-next V2 0/4] Introduce mlx5 ethernet timestamping Saeed Mahameed
2015-12-20 21:46 ` [PATCH net-next V2 1/4] net/mlx5e: Do not modify the TX SKB Saeed Mahameed
2015-12-21 5:05 ` Or Gerlitz
2015-12-20 21:46 ` [PATCH net-next V2 2/4] net/mlx5_core: Add support for reading hardware timestamp Saeed Mahameed
2015-12-20 21:46 ` [PATCH net-next V2 3/4] net/mlx5e: Add HW timestamping (TS) support Saeed Mahameed
2015-12-21 9:15 ` Richard Cochran
2015-12-21 14:35 ` Saeed Mahameed
2015-12-21 18:35 ` Richard Cochran
2015-12-22 9:56 ` Saeed Mahameed
2015-12-22 10:00 ` Saeed Mahameed
2015-12-22 17:01 ` Richard Cochran
2015-12-24 14:02 ` eran ben elisha
2015-12-20 21:46 ` [PATCH net-next V2 4/4] net/mlx5e: Add PTP Hardware Clock (PHC) support Saeed Mahameed
2015-12-21 9:16 ` Richard Cochran [this message]
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