Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Date:   Wed, 18 May 2022 21:40:58 -0700
From:   Jakub Kicinski <kuba@kernel.org>
To:     Harini Katakam <harini.katakam@xilinx.com>
Cc:     <nicolas.ferre@microchip.com>, <davem@davemloft.net>,
        <richardcochran@gmail.com>, <claudiu.beznea@microchip.com>,
        <edumazet@google.com>, <pabeni@redhat.com>,
        <netdev@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
        <michal.simek@xilinx.com>, <harinikatakamlinux@gmail.com>,
        <radhey.shyam.pandey@xilinx.com>
Subject: Re: [PATCH net v3] net: macb: Fix PTP one step sync support
Message-ID: <20220518214058.2a964dba@kernel.org>
In-Reply-To: <20220518170756.7752-1-harini.katakam@xilinx.com>
References: <20220518170756.7752-1-harini.katakam@xilinx.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
Precedence: bulk

On Wed, 18 May 2022 22:37:56 +0530 Harini Katakam wrote:
> PTP one step sync packets cannot have CSUM padding and insertion in
> SW since time stamp is inserted on the fly by HW.
> In addition, ptp4l version 3.0 and above report an error when skb
> timestamps are reported for packets that not processed for TX TS
> after transmission.
> Add a helper to identify PTP one step sync and fix the above two
> errors. Add a common mask for PTP header flag field "twoStepflag".
> Also reset ptp OSS bit when one step is not selected.
> 
> Fixes: ab91f0a9b5f4 ("net: macb: Add hardware PTP support")
> Fixes: 653e92a9175e ("net: macb: add support for padding and fcs computation")
> Signed-off-by: Harini Katakam <harini.katakam@xilinx.com>
> Reviewed-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com>

Acked-by: Jakub Kicinski <kuba@kernel.org>